CN117859409A

CN117859409A - Cooking device and cooking device control method

Info

Publication number: CN117859409A
Application number: CN202280055482.3A
Authority: CN
Inventors: 金东汉; 俞东官; 金栯填
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2021-10-28
Filing date: 2022-10-12
Publication date: 2024-04-09

Abstract

The present invention relates to a cooking apparatus and a control method of the cooking apparatus. In the present invention, a cavity (S) may be formed inside the housing (100, 200), and a first heat source module (400) that radiates microwaves to the cavity (S) may be disposed on a side surface of the housing (100, 200). Further, a second heat source module (500) that emits a magnetic field toward the cavity (S) may be disposed on the bottom surface of the case (100, 200), and a third heat source module (600) that generates radiant heat toward the cavity (S) may be disposed on the upper portion of the case (100, 200). Since the second heat source module (500) of the induction heating mode can rapidly heat the bottom surface of the container (B), the cooking speed of the cooking apparatus can be increased together with the waste heat source thereof.

Description

Cooking apparatus and control method of cooking apparatus

Technical Field

The present invention relates to a cooking apparatus and a control method of the cooking apparatus.

Background

Various ways of cooking devices for heating food are used in homes or restaurants. For example, various cooking devices such as microwave ovens, induction heating electric ovens, and barbecue ovens (green ovens) are used.

Wherein, the microwave oven is a cooking device of a high-frequency heating mode. The microwave oven utilizes the principle that molecules in a high-frequency electric field vibrate vigorously to generate heat. The microwave oven has an advantage of being able to heat food rapidly and uniformly.

Further, an induction heating type electric oven is a cooking apparatus that heats an object to be heated by electromagnetic induction. Specifically, the induction heating type electric furnace can heat the object to be heated itself by generating an eddy current (eddy currents) in the object to be heated composed of a metal component by using a magnetic field generated around the coil when a high-frequency power of a predetermined magnitude is applied to the coil.

In addition, a barbecue oven is a cooking apparatus that heats food by radiating or convection infrared heat. The barbecue oven allows infrared heat to penetrate through the food, thus enabling the food to be uniformly cooked as a whole.

As described above, as cooking apparatuses using various types of heat sources are pushed out, the number and variety of cooking apparatuses that users have increases, so that there is a problem in that such cooking apparatuses occupy a large volume in a living space. Thus, the user's demand for a complex cooking apparatus having a plurality of heating modules at the same time is increasing. In addition, there is a need to develop a cooking apparatus that uses a plurality of heating modes simultaneously so that food in an object to be heated is cooked more uniformly and rapidly.

A technique for cooking food using radiant heat and convection heat together with microwaves is disclosed in us patent US6,987,252B2 (prior art 1). However, the coil is used in order to generate radiant heat and convection heat, and thus there are limitations in that the heat efficiency is relatively low and the cooking item cannot be rapidly heated, as compared to the induction heating heat source.

Korean laid-open patent publication No. 10-2018-0195981 (prior art 2) discloses a cooking apparatus including a heat source using microwaves and a heat source generating radiant heat and convection heat. However, the cooking apparatus of the related art 2 is configured to cover other heat sources with a shielding cover when using the microwave heat sources, and thus is a structure that cannot use a plurality of heat sources at the same time. In addition, the cooking apparatus of the related art 2 has the inconvenience of requiring the rotation of the shielding cover every time the microwave heat source is used, and the additional provision of a rotation motor or the like for rotating the shielding cover, and thus has the limitation of complicated structure and increased manufacturing costs.

Further, korean laid-open patent publication No. 10-2021-0107487 (prior art 3) discloses a cooking apparatus for simultaneously using microwave and induction heating heat sources in one apparatus. However, the prior art 3 has a limitation in that it cannot provide a function of baking a cooking object and also cannot heat an upper portion of the cooking object even if a microwave and an induction heating source are simultaneously used.

Disclosure of Invention

Problems to be solved by the invention

The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a cooking apparatus having a cooking function using microwaves and radiant heat, and also having a cooking function of an induction heating method.

Another object of the present invention is to enable a cooking object to be rapidly and uniformly cooked by effectively disposing a plurality of heat sources of different kinds from each other at a plurality of positions of a cooking apparatus.

It is still another object of the present invention to achieve cooking in various ways by combining a plurality of heat sources of different kinds from each other.

Technical proposal for solving the problems

According to the features of the present invention for achieving the above object, in the present invention, a cavity may be formed inside a housing, and a first heat source module that radiates microwaves toward the cavity may be disposed on a side surface of the housing. Further, a second heat source module that emits a magnetic field toward the cavity may be disposed on a bottom surface of the housing, and a third heat source module that generates radiant heat toward the cavity may be disposed on an upper portion of the housing. The second heat source module of the induction heating mode can rapidly heat the bottom surface of the container, so that the cooking speed of the cooking equipment can be improved together with the waste heat source of the second heat source module.

In this case, the second heat source module and the third heat source module may be disposed in the case so as to face each other through the cavity. Accordingly, the plurality of heat sources can rapidly heat the respective surfaces of the food, thereby enabling more rapid cooking.

Further, a main control portion may be provided in the housing, and the main control portion may be disposed on a second side surface formed on an opposite side of the housing from the first side surface on which the first heat source module is disposed. In this way, the main control unit can be disposed at a wide position where no heat source is disposed, and thus a space in which a component for inverter control can be mounted can be sufficiently ensured.

In addition, a power supply portion may be disposed between an inner rear plate of an inner case and an outer rear plate of an outer case constituting the housing. In this case, a heat-insulating rear plate may be disposed between the inner rear plate and the outer rear plate, and the power supply portion may be provided in the heat-insulating rear plate. When the power supply unit as the heating element is disposed on the heat-insulating rear plate, the high temperature inside the chamber can be prevented from being directly transmitted to the power supply unit.

Further, the third heat source module may include a fixed assembly fixed to the housing and a moving assembly having a heater part disposed therein. The distance from the moving component to the bottom surface of the cavity is variable when the moving component moves relative to the fixed component. Thereby, the heating level of the third heat source module to the cooking object can be adjusted, and heat loss can be reduced.

A distance sensor may be disposed at the housing in such a manner as to face the center of the cavity. The distance sensor may be disposed at a front portion of the heat insulation top plate coupled to the outer front plate of the housing. The distance sensor may measure the height of the cooking object and actively control the cooking mode according to the state of the cooking object. In addition, since the distance sensor is disposed at the front portion of the heat insulating top plate, the distance sensor can be cooled more effectively.

In addition, the housing may include an inner housing formed with the cavity and an outer housing disposed outside the inner housing. The first heat source module and the second heat source module may be disposed between the inner case and the outer case, respectively, and the third heat source module may be exposed to the cavity through a ceiling opening formed in an inner ceiling of the inner case.

Further, in the inner case, an intake port and an exhaust port that are opened toward the cavity may be formed on different surfaces of the inner case, respectively, and a supply duct that covers the intake port may be provided between the inner case and the outer case. The supply duct may smoothly supply air into the cavity.

Further, one end portion of the supply duct may cover the suction port, and a duct assembly for opening and closing the other end portion of the supply duct may be provided at the other end portion of the supply duct. The duct assembly may selectively supply air into the cavity while being opened and closed.

Further, the supply duct may be disposed at an inner side plate of the inner case where a waveguide constituting the first heat source module is disposed, and the supply duct may be disposed at a different height from the waveguide. The supply line can thus be configured without interference with the waveguide.

In addition, the duct assembly may be disposed at a lower portion of the cooling fan module. Thus, air emitted by the cooling fan module may flow into the duct assembly.

Further, an exhaust duct covering the exhaust port may be provided at the inner case, and one end portion of the exhaust duct may cover the exhaust port while the other end portion may be opened between the inner case and the outer case. The exhaust duct may guide air exhausted from the cavity to be exhausted to the outside of the cooking apparatus.

In addition, the exhaust duct may be disposed at an inner side plate of the inner case where the main control portion is disposed, and the exhaust duct may be disposed at a position farther from the door than the main control portion. Thereby, the air discharged from the exhaust duct may cool the second heat source module while passing through the lower portion of the second heat source module.

At this time, at least one of a humidity sensing module and a temperature sensor may be disposed at the exhaust duct. Since the exhaust duct is a portion through which air inside the cavity is exhausted, the humidity sensing module and the temperature sensor can more accurately measure an air state inside the cavity.

Furthermore, a camera module that photographs the inside of the cavity may be disposed between the inner case and the outer case. The camera module may capture a state of the inside of the cavity and transmit the captured state to the main control part, and the main control part may provide the captured image to the user or may adjust the cooking mode based on the captured image.

Further, a heat insulating top plate may be coupled to the top plate of the inner casing, and a cooling fan module may be disposed on the heat insulating top plate. Since the cooling fan module is disposed on the heat insulating top plate, the high temperature of the cavity can be prevented from being directly transferred to the cooling fan module.

In this case, a fan penetration portion may be formed at a portion of the heat insulating top plate protruding rearward from the inner case, and the cooling fan module may be disposed at an upper portion of the fan penetration portion. Thereby, the cooling fan module can naturally discharge air between the inner case and the outer case.

In addition, a plurality of cooling fan modules may be disposed around the third heat source module. In addition, any one of the plurality of cooling fan modules may be disposed in a direction orthogonal to the other cooling fan modules. The plurality of cooling fan modules configured in this way can cool the third heat source module from a plurality of directions, and can form a continuous flow path for air to flow.

In addition, an air intake portion that opens to the first electric chamber in which the third heat source module is disposed may be formed at an upper portion of the housing, and an air discharge portion that opens to the second electric chamber in which the second heat source module is disposed may be formed at a lower portion of the housing. As described above, since both the air suction portion and the air discharge portion are opened toward the front of the cooking apparatus, suction/discharge of air can be smoothly achieved even if the cooking apparatus is provided in an embedded manner.

Further, a main control unit may be disposed in the housing, and the main control unit may control operations of the first heat source module, the second heat source module, and the third heat source module. In this case, the control method of the main control unit may include: a step of inputting a cooking grade; and selecting, by the main control unit, operation modes of the first heat source module, the second heat source module, and the third heat source module, respectively, according to the inputted cooking level. Therefore, the operation mode of each heat source can be appropriately selected according to the inputted cooking level, and a plurality of heat sources can be operated in combination while cooking the cooking object appropriately.

Effects of the invention

The cooking apparatus and the control method of the cooking apparatus of the present invention as described above have the following effects.

The cooking apparatus of the present invention may be provided with a first heat source module generating microwaves, a second heat source module of an induction heating mode, and a third heat source module generating radiant heat. At this time, since the second heat source module of the induction heating type can rapidly heat the bottom surface of the container, there is an effect that the cooking speed of the cooking apparatus can be increased together with the waste heat source thereof.

Further, in the present invention, the first to third heat source modules may simultaneously perform a cooking function. Accordingly, the plurality of heat sources can rapidly heat the respective surfaces of the food, thereby enabling more rapid cooking.

In addition, in the present invention, the first to third heat source modules may be disposed on different surfaces of the housing, respectively, so that the respective surfaces of the food can be heated. Accordingly, the cooking apparatus of the present invention has an effect of being able to cook various portions of food uniformly as a whole.

In particular, the second heat source module and the third heat source module may be disposed to face each other across the cavity. Thus, the second heat source module and the third heat source module can heat the lower and upper portions of the cooking object, respectively, and can uniformly cook the upper portion of the cooking object that is not in direct contact with the second heat source module.

In addition, the first to third heat source modules may cook food in such a manner that they vibrate at high frequencies, conduct, radiate, etc. differently from each other. Therefore, there is an effect that various cooking modes can be provided by various combinations of the first to third heat source modules, improving usability of the cooking apparatus.

Further, in the present invention, a second heat source module as an induction heating heat source may be disposed at the bottom of the cooking apparatus. At this time, since only an induction heating source is disposed at the bottom of the cooking apparatus without an additional turntable structure, the bottom of the cooking apparatus may have a flat plate structure, thereby also having an advantage in that cleaning of the bottom surface of the cooking apparatus becomes easy.

In addition, in the present invention, the second heat source module operates in an induction heating manner, and thus the cooking temperature can be adjusted by using the linear output of the inverter control. Therefore, the user can more precisely and accurately control a desired cooking temperature, so that cooking convenience can be improved.

In addition, in the present invention, the third heat source module may be lifted and lowered by the moving module. If the third heat source module is moved close to the food by the moving module, there is an advantage in that heat loss can be reduced and cooking time of the food can be further shortened.

In the present invention, a distance sensor may be disposed in the housing. The distance sensor can measure the height of the food, and the cooking device can automatically select a cooking mode suitable for the height of the food. Therefore, the cooking apparatus of the present invention can improve cooking convenience.

In addition, the cooking apparatus of the present invention can measure the height variation of food with cooking time through the distance sensor, and can actively control the cooking mode according to the height of food. Therefore, the cooking apparatus of the present invention can improve cooking quality of food.

In the present invention, the cooling fan module may be disposed at an upper edge of the housing, and the power supply unit that generates heat may be disposed at a rear of the housing. The cooling fan module can discharge air in the side and rear directions of the housing, and can effectively cool the power supply unit and the plurality of heat sources.

In the present invention, the cooling fan module, the distance sensor, the camera module, the lighting device, the power supply unit, and the like may be mounted on the heat insulating top plate or the heat insulating rear plate coupled to the inner case, instead of being directly mounted on the inner case constituting the cavity. Therefore, the high temperature inside the cavity is not directly transmitted to the member, and the durability of the member can be improved.

In the present invention, the operation mode of each heat source may be appropriately selected according to the inputted cooking level. Thus, the plurality of heat sources can properly cook the cooking object while performing the combined operation, and the cooking quality of the cooking object can be improved.

Drawings

Fig. 1 is a perspective view illustrating an embodiment of a cooking apparatus of the present invention.

Fig. 2 is a perspective view showing exploded components constituting an embodiment of the cooking apparatus of the present invention.

Fig. 3 is a perspective view illustrating exploded and exploded components other than the door, the outer side plate, and the outer top plate among components constituting an embodiment of the cooking apparatus of the present invention.

Fig. 4 is a perspective view of the structure of fig. 3, as seen from the side opposite to fig. 3.

Fig. 5 is a perspective view illustrating a case in which a door and a housing are removed in the embodiment of fig. 1.

Fig. 6 is a perspective view showing a state in which the door and the housing are removed in the embodiment of fig. 1, as viewed from an angle opposite to fig. 2.

Fig. 7 is a cross-sectional view taken along line VII-VII' of fig. 1.

Fig. 8 is a front view showing a state in which a part of a door and a housing is omitted among components constituting an embodiment of the cooking apparatus of the present invention.

Fig. 9 is a plan view showing a state in which a part of a door and a housing is omitted among components constituting an embodiment of the cooking apparatus of the present invention.

Fig. 10 is a rear view showing a state in which a part of a door and a housing is omitted among components constituting an embodiment of the cooking apparatus of the present invention.

Fig. 11 is a right side view showing a state in which a part of a door and a housing is omitted among components constituting an embodiment of the cooking apparatus of the present invention.

Fig. 12 is a left side view showing a state in which a part of a door and a housing is omitted among components constituting an embodiment of the cooking apparatus of the present invention.

Fig. 13 is a front view showing a state in which an exhaust duct constituting an embodiment of the cooking apparatus of the present invention is mounted to an inner case.

Fig. 14 is a perspective view showing an inner case, an outer front plate, an outer top plate, and a second heat source module constituting an embodiment of the cooking apparatus of the present invention in an exploded state.

Fig. 15 is a perspective view showing the constitution of an inner case and a first heat source module constituting an embodiment of the cooking apparatus of the present invention in an exploded state.

Fig. 16 is a perspective view showing the constitution of an inner case and a first heat source module constituting an embodiment of the cooking apparatus of the present invention in a combined state.

Fig. 17 is a perspective view showing an outer top plate, a first cooling fan module disposed on the outer top plate, and a distance sensor module, which constitute an embodiment of the cooking apparatus of the present invention, in a state of being separated from each other.

Fig. 18 is a perspective view showing a configuration of a heat-insulating rear plate and a power supply portion disposed on the heat-insulating rear plate in an exploded state, which constitutes an embodiment of the cooking apparatus of the present invention.

Fig. 19 is a perspective view showing components of a second heat source module constituting an embodiment of the cooking apparatus of the present invention in a state of being exploded from each other.

Fig. 20 is a perspective view showing the structure of a lower support and a work coil assembly among components of a second heat source module constituting an embodiment of the cooking apparatus of the present invention.

Fig. 21 is a sectional view showing an internal structure of a second heat source module constituting an embodiment of the cooking apparatus of the present invention.

Fig. 22 is a sectional view showing an internal structure of a second heat source module constituting an embodiment of the cooking apparatus of the present invention.

Fig. 23 to 26 are assembly sequence diagrams sequentially showing a process of assembling the second heat source module constituting an embodiment of the cooking apparatus of the present invention.

Fig. 27 is a perspective view showing the structure of a third heat source module constituting an embodiment of the cooking apparatus of the present invention.

Fig. 28 is a perspective view showing an exploded part constituting the third heat source module shown in fig. 27.

Fig. 29 is a perspective view illustrating a case where the third heat source module shown in fig. 27 is disposed at the first position.

Fig. 30 is a perspective view illustrating a case where the third heat source module shown in fig. 27 is disposed at the second position.

Fig. 31 is a sectional view showing a state in which the third heat source module shown in fig. 27 is arranged at the first position such that the position switch is pressed by the operation pin.

Fig. 32 is a perspective view showing a state in which a distance sensor and a lighting device constituting an embodiment of the cooking apparatus of the present invention are exploded from an outer top plate.

Fig. 33 is a perspective view showing a state in which a distance sensor constituting an embodiment of the cooking apparatus of the present invention is disposed on an outer top plate.

Fig. 34 is a perspective view showing a state in which components of a distance sensor constituting an embodiment of the cooking apparatus of the present invention are exploded.

Fig. 35 is a sectional view showing a state in which a distance sensor constituting an embodiment of the cooking apparatus of the present invention is disposed on an outer top plate.

Fig. 36 is a perspective view showing a state in which a camera sensor and an inner case constituting an embodiment of the cooking apparatus of the present invention are disassembled.

Fig. 37 is a perspective view showing a state in which a camera sensor constituting an embodiment of the cooking apparatus of the present invention is disposed in an inner case.

Fig. 38 is a perspective view showing a state in which components of the camera sensor shown in fig. 36 are exploded.

Fig. 39 is a perspective view showing the structure of a camera head housing among the components of the camera sensor shown in fig. 36.

Fig. 40 is a sectional view showing a state in which a camera sensor constituting an embodiment of the cooking apparatus of the present invention is disposed in an inner case.

Fig. 41 is a sectional view showing a state in which a camera sensor constituting an embodiment of the cooking apparatus of the present invention is disposed in an inner case from a different angle from fig. 40.

Fig. 42 is a perspective view of a state in which a camera sensor constituting an embodiment of the cooking apparatus of the present invention is disposed in an inner case, as viewed from the inside of a cavity.

Fig. 43 is a perspective view showing the structures of an exhaust duct, a humidity sensor and a temperature sensor arranged in the exhaust duct, which constitute an embodiment of the cooking apparatus of the present invention.

Fig. 44 is a perspective view showing a state in which components of the second cooling fan module constituting an embodiment of the cooking apparatus of the present invention are exploded.

Fig. 45 is a perspective view showing the structure of a pipe module constituting an embodiment of the cooking apparatus of the present invention.

Fig. 46 is a perspective view showing a state in which components of a pipe module constituting an embodiment of the cooking apparatus of the present invention are exploded.

Fig. 47 is a perspective view showing a second embodiment of the cooking apparatus of the present invention.

Fig. 48 is a perspective view of the second embodiment shown in fig. 47 from a different angle from fig. 47.

Fig. 49 is a plan view showing the structure of the second embodiment shown in fig. 47.

Fig. 50 is a rear view showing the structure of the second embodiment shown in fig. 47.

Fig. 51 is a left side view showing the structure of the second embodiment shown in fig. 47.

Fig. 52 is a right side view showing the structure of the second embodiment shown in fig. 47.

Detailed Description

Some embodiments of the invention are described in detail below with reference to the attached drawings. Note that, when reference is made to constituent elements of each drawing, the same reference numerals are given to the same constituent elements as much as possible even if they are shown on different drawings. In the process of describing the embodiments of the present invention, when it is determined that a specific description of a known structure or function is not necessary for understanding the embodiments of the present invention, a detailed description thereof will be omitted.

The cooking apparatus of the present invention is an apparatus for cooking food (hereinafter, referred to as "cooking object") as a cooking object using a plurality of heat sources. The cooking apparatus of the present invention may include a first heat source module 400, a second heat source module 500, and a third heat source module 600. The first heat source module 400, the second heat source module 500, and the third heat source module 600 may be respectively disposed at the cooking apparatus of the present invention, and may be composed of heat sources of different kinds from each other. Hereinafter, a plurality of such heat sources, a cooling device (cooling fan module) for cooling the heat sources, and a device for measuring the state of the cooking apparatus will be described mainly.

Fig. 1 shows an embodiment of the cooking apparatus of the present invention. As shown in the drawing, in the present embodiment, a cavity S is formed inside the cooking apparatus, and the cavity S may be opened and closed by a door 300. The remaining parts of the cooking apparatus except for the door 300 may be shielded by the housings 100, 200. The cavity S is an empty space, which can be regarded as a cooking chamber. The case 100, 200 may further include an inner case 100 and an outer case 200, and the specific structure of the inner case 100 and the outer case 200 will be described later.

Referring to fig. 1, in the present embodiment, the first heat source module 400 may be disposed at the left side of the cooking apparatus, and the second heat source module 500 may be disposed at the bottom. In addition, the third heat source module 600 may be disposed at an upper portion of the cooking apparatus. As described above, in the present embodiment, the first heat source module 400, the second heat source module 500, and the third heat source module 600 may be disposed on different surfaces from each other among the six surfaces constituting the housings 100, 200, respectively.

In fig. 2, the components constituting the cooking apparatus are exploded so that the third heat source module 600 is exposed. In this embodiment, the third heat source module 600 is movable between a first position and a second position. The third heat source module 600 may be moved toward the bottom surface of the chamber S, i.e., the second heat source module 500, when being lifted and lowered, as viewed from the figure.

In contrast, the first heat source module 400 may be disposed on the right side of the cooking apparatus, and the third heat source module 600 may be disposed on the back side of the cooking apparatus. The third heat source module 600 may be fixed to the housing 100 or 200 without being moved.

As shown in fig. 2, the inner case 100 constituting the housing 100, 200 may be configured to surround the cavity S. The inner case 100 may include a pair of inner side plates 110 and an inner rear plate 120 connected between the pair of inner side plates 110. The pair of inner side plates 110 and the inner rear plate 120 may be formed in a substantially shape.

The third heat source module 600 may be disposed at an upper portion of the inner case 100. That is, it can be also considered that the upper portion of the chamber S is shielded by the third heat source module 600. In addition, a second heat source module 500 may be disposed at a lower portion of the inner case 100. It can also be considered that the lower portion of the cavity S is shielded by the second heat source module 500. Accordingly, the second heat source module 500 and the third heat source module 600 may also be regarded as a part of the inner case 100 surrounding the cavity S.

The pair of inner panels 110 may be formed with an air inlet 123 and an air outlet 125, respectively. The intake port 123 and the exhaust port 125 are formed on a pair of side plates, respectively, and thus can be regarded as being disposed on opposite sides from each other. The suction port 123 and the exhaust port 125 are opened to the chamber S, respectively, so that the chamber S can be connected to the outside.

The suction port 123 is opened to the chamber S. A supply duct 910, which will be described later, is disposed at an outer side surface of the side plate where the suction port 123 is formed, so that air can be supplied to the suction port 123. Moisture in the cooking object cooked by the first heat source module 400 evaporates, so that a lot of moisture may be generated inside the cavity S. In order to remove such moisture, air needs to be supplied to the inside of the chamber S. In the present embodiment, air may be injected through the air suction port 123, and air may be discharged through the air discharge port 125 located at the opposite side. At this time, the air flowing in through the air inlet 123 may be a part of the air having a heat dissipation (cooling) effect while passing through the inside of the housing 100, 200.

Referring to fig. 3, a camera mounting part 128 may be provided at the inner rear plate 120. A camera module 730 described later may be mounted to the camera mounting portion 128. The camera mounting portion 128 may have a shape recessed rearward from the cavity S, and conversely, may have a convex structure when viewed from the rear side of the inner rear plate 120. Preferably, the camera mounting part 128 is disposed at a central portion of the inner rear plate 120 such that the camera module 730 faces the center of the cavity S. The specific structure of the camera mounting portion 128 will be described later together with the camera module 730.

An inner ceiling 160 may be disposed at an upper portion of the inner side plate 110. Referring to fig. 3 and 4, the inner top panel 160 may have a substantially square frame shape and may be disposed along upper end edges of a pair of the side panels. A ceiling opening 162 (see fig. 14), which is a hollow space, may be formed in the center portion of the inner ceiling 160. The third heat source module 600 may be lifted and lowered through the top plate opening 162.

Referring to fig. 14, a wedge portion 161 may be provided at the inner ceiling 160. The wedge 161 may be an electromagnetic wave shielding structure for preventing electromagnetic waves inside the cavity S from leaking to the outside through a gap between the cavity S and the top plate opening 162. The wedge portion 161 may be provided along an edge of the top plate opening portion 162.

A lighting installation portion 165 may be provided at the inner ceiling panel 160. The lighting installation part 165 may be provided at an upper portion of the inner ceiling panel 160. A lighting device 790 described later may be provided in the lighting mounting portion 165. In this embodiment, the lighting installation part 165 may be provided in the middle of the front portion of the inner ceiling 160 near the door 300.

Further, referring to fig. 14, the illumination mounting portion 165 may have an inclined shape. Thus, when the lighting device 790 is mounted on the lighting mounting portion 165, the angle of the illumination light may be a direction inclined toward the center of the cavity S. For reference, in fig. 14, reference numeral 163 denotes a sensing hole, and a distance sensor 710 described later may be provided at the sensing hole 163.

An outer case 200 may be disposed at an outer side of the inner case 100. The outer case 200 may surround the inner case 100. A prescribed space, i.e., an electric room, may be provided between the inner case 100 and the outer case 200. A main control unit 700, a first cooling fan module 810, a second cooling fan module 850, a power supply unit 770, and the like, which will be described later, may be disposed in the electric room. The third heat source module 600 may also be regarded as being disposed between the inner case 100 and the outer case 200.

Referring to fig. 2, the housing 200 may include a pair of outer side plates 210, an outer rear plate 220 connecting the pair of outer side plates 210, an outer top plate 230 disposed at an upper portion, an outer front plate 240 disposed at a front portion, and an outer bottom plate 250. The outer case 200 may surround all outer surfaces of the inner case 100, and thus the inner case 100 may be hidden by the outer case 200 outside.

A portion of the outer back plate 220 may also be separated. Referring to fig. 10, if a portion of the outer rear plate 220 is separated, the inside of the third electric chamber ES3 may be exposed through the rear plate penetration 221 a. The operator can access the inside of the exposed third electric chamber ES3 to maintain the components. Reference numeral 222 denotes a cable penetration portion through which the power supply cable is discharged to the outside.

The outer top plate 230 may be formed in a substantially square plate shape. May be disposed at an upper side of the third heat source module 600. The outer top plate 230 may shield the third heat source module 600. The outer top plate 230 may be regarded as a member disposed at the outermost side in the upper portion of the cooking apparatus.

A top plate shielding part 232 may be provided at a front portion of the outer top plate 230. The top plate shielding portion 232 may be formed by bending a front portion of the outer top plate 230 in an orthogonal manner. The top plate shielding portion 232 may support a display substrate (not shown) provided to a display module 350 described later from the rear side, and may prevent the internal structure of the cooking apparatus from being exposed forward through the display module 350. Reference numeral 235 denotes a hole through which a part of the wire harness passes backward, and may be omitted.

The outer front plate 240 may be disposed at the rear of the door 300. The outer front plate 240 may be generally square in shape. The center portion of the outer front plate 240 may be penetrated to expose the inside of the cavity S to the outside. The outer front plate 240 may be coupled with front portions of a pair of inner side plates 110 constituting the inner case 100. Accordingly, the outer front plate 240 may also be considered as a part of the inner case 100 instead of the outer case 200.

In the present embodiment, the outer front plate 240 has a height higher than the inner side plate 110 constituting the inner case 100, so that empty spaces may be formed behind the upper end and behind the lower end of the outer front plate 240, respectively. Such an empty space may be a heat dissipation space for dissipating heat from the component while constituting the electric chamber for mounting the component. For example, a first cooling fan module 810, a second cooling fan module 850, and a third heat source module 600, which will be described later, may be disposed behind a portion of the outer front plate 240 that protrudes further upward than the inner plate 110.

An air suction portion 242 and an air discharge portion 243 may be formed at the outer front plate 240, respectively. In the present embodiment, the air intake portion 242 is disposed at an upper portion of the outer front plate 240, and the air discharge portion 243 is disposed at a lower portion of the outer front plate 240. Referring to fig. 8, the air suction portion 242 and the air discharge portion 243 extend in the lateral width direction of the outer front plate 240, respectively. The outside air may flow into the first electric chamber ES1 through the air suction portion 242 to cool the components including the heat source, and the air heated by the heat of the components may be discharged to the outside through the air discharge portion 243.

As shown in fig. 5, the air suction portion 242 may be formed at a portion of the outer front plate 240 protruding more upward than the inner side plate 110. Further, the first cooling fan module 810 and the second cooling fan module 850 may be disposed behind the air intake 242. Accordingly, when the first cooling fan module 810 and the second cooling fan module 850 are operated, the outside air may flow into the first electric room ES1 provided between the outer top plate 230 and the inner top plate 160 via the air suction part 242.

The air discharge portion 243 may be formed at a portion of the outer front plate 240 protruding more downward than the second heat source module 500. A second electric room ES2 formed between the second heat source module 500 and the outer bottom plate 250 may be disposed at the rear of the air discharge portion 243. The air flowing into the interior of the cooking apparatus via the air suction part 242 may be discharged through the air discharge part 243 after passing through the second electric chamber ES2.

Referring to fig. 5, a hinge hole 244 may be formed at the lower side of the outer front plate 240. The hinge hole 244 may be a portion through which a hinge assembly (not shown) of the door 300 passes. The hinge assembly may be coupled with a hinge holder 253 provided at the outer bottom plate 250 through the hinge hole 244.

A connector portion 245 may be provided at an upper portion of the outer front plate 240. The connector portion 245 may be disposed at an upper portion of the outer front plate 240. The connector portion 245 is electrically connected to the main control portion 700, and an operator can control the main control portion 700 by touching the connector portion 245. The connector portion 245 may be omitted or may be disposed on the outer rear plate 220 or the outer side plate 210.

A shielding frame 247 may be disposed at the rear of the outer front plate 240. The shielding frame 247 is disposed at the rear side of the air suction portion 242 of the outer front plate 240, and can block the access from the outside to the wire harness and can hide the internal components. A plurality of slits are formed in the shielding frame 247 to allow air flowing in through the air suction part 242 to pass therethrough.

The housing 200 may include an outer floor 250. The outer bottom plate 250 may be disposed at the lower side of the inner case 100. In this embodiment, the outer bottom plate 250 is connected between the outer rear plate 220 and the outer front plate 240. The outer bottom plate 250 may be connected to a heat-insulating rear plate 280, which will be described later. As shown in fig. 5, the outer bottom plate 250 may be spaced apart from the second heat source module 500, and a second electric chamber ES2 may be formed at the spaced apart portion.

For reference, in fig. 6, a case where the outer bottom plate 250 is omitted is shown, and as shown in fig. 6, an empty space, that is, a second electric chamber ES2, is provided between the outer front plate 240 and the heat-insulating rear plate 280. Air may flow through the second electric room ES2, and finally, the air may be discharged to the outside through the air discharge portion 243.

In another aspect, the aforementioned electrical chamber is defined, which may be divided into a plurality of spaces. In the present embodiment, the electric cells may be divided into first to fifth electric cells ES1 to ES5. The first electric chamber ES1 (i) is formed between the inner top plate 160 and the outer top plate 230 (refer to fig. 9), (ii) the second electric chamber ES2 is formed between the second heat source module 500 and the outer bottom plate 250 (refer to fig. 7), (iii) the third electric chamber ES3 is formed between a later-described heat-insulating rear plate 280 and the outer rear plate 220 (refer to fig. 10), (iv) the fourth electric chamber ES4 and the fifth electric chamber ES5 may be formed between the pair of inner side plates 110 and the pair of outer side plates 210 (refer to fig. 11 and 12), respectively. Such first electric room ES1 and fifth electric room ES5 are arbitrarily divided, and may be connected to each other.

In this case, each of the electric cells may be regarded as being formed on each surface of the case. The first to fifth electric cells ES1 to ES5 are formed on respective faces of the hexahedral case, which are different from each other. Further, the first, second and third heat source modules 400, 500 and 600 may be regarded as being disposed on different surfaces of the case.

The housing 200 may include an insulated top plate 270. The insulating top panel 270 may be disposed between the outer top panel 230 and the inner top panel 160. The cavity S generates high heat during cooking, and thus the temperature of the inner ceiling 160 may also become high. The insulating top panel 270 may reduce heat transfer from the inner top panel 160 to the outer top panel 230. The heat insulation top plate 270 may have a square frame shape having a center penetrating therethrough, similarly to the inner top plate 160. The moving opening 272 formed at the center of the heat insulating top plate 270 may be connected to the top plate opening 162 of the inner top plate 160, and the third heat source module 600 may be moved through the moving opening 272 and the top plate opening 162.

As shown in fig. 3 to 5, a distance sensor 710 and cooling fan modules 810 and 850 may be disposed on the heat insulation top plate 270. Since the distance sensor 710 and the cooling fan modules 810 and 850 are disposed on the heat insulation top plate 270, heat of the chamber S can be prevented from being directly transferred to the distance sensor 710 and the cooling fan modules 810 and 850. Accordingly, durability of the distance sensor 710 and the cooling fan modules 810, 850 can be improved.

Referring to fig. 17, the heat insulating top plate 270 may have an illumination penetration portion 273. The illumination penetration portion 273 may be formed at a position corresponding to the illumination mounting portion 165 of the roof panel 160. The lighting device 790 may be mounted to the lighting mounting portion 165 through the lighting penetration portion 273.

A sensor mounting portion 274 may be provided in the heat insulating top plate 270 at a position adjacent to the illumination through portion 273. The sensor mounting portion 274 may be formed in the heat insulating top plate 270 near a front portion of the door 300. The distance sensor 710 may be mounted to the sensor mounting portion 274. When the distance sensor 710 is disposed at the sensor mounting portion 274, the distance sensing portion 720 of the distance sensor 710 may face the central portion of the chamber S. The distance sensing part 720 may be exposed toward the center direction of the cavity S through the sensing hole 163 of the inner ceiling plate 160.

The heat insulating top plate 270 may be further provided with a protective cover 276 (see fig. 28) for blocking electromagnetic waves from leaking through a gap between the moving member 630 and the fixed member 640, which will be described later. The protective cover 276 may be formed to surround edges of the fan penetration portions 278a and 278b formed in the center of the heat insulating top plate 270. The protective cover 276 is described again later.

Referring to fig. 6, the heat insulating top plate 270 may have fan penetration portions 278a and 278b. The fan penetration portions 278a and 278b may be formed at portions of the heat insulation top plate 270 protruding rearward than the inner case 100. Accordingly, the fan penetration portions 278a, 278b may be opened to the outside of the inner case 100. In the present embodiment, the fan penetration portions 278a and 278b may be opened rearward of the heat insulation rear plate 280 coupled to the inner case 100.

The fan penetration portions 278a, 278b may be opened to the third electric chamber ES 3. The first cooling fan module 810 may be disposed on one side of the fan penetration portions 278a, 278b. A power supply 770 may be disposed below the fan penetration portions 278a and 278b. Therefore, the air discharged from the first cooling fan module 810 through the fan penetration portions 278a and 278b can be discharged to the lower side, that is, the power supply portion 770.

In the present embodiment, the fan penetration portions 278a and 278b may be constituted by a first penetration portion 278a and a second penetration portion 278b. The first and second through portions 278a and 278b may be formed at positions corresponding to the first and second driving blades 825a and 825b constituting the first cooling fan module 810, respectively. The first through-hole 278a may be opened to the high-voltage transformer 771 of the power supply unit 770, and the second through-hole 278b may be formed at a position closer to the center of the third electric chamber ES3 than the first through-hole 278 a.

Referring to fig. 2, an insulating rear plate 280 may be disposed between the inner rear plate 120 and the outer rear plate 220. The heat insulation rear plate 280 is coupled with the inner rear plate 120, and a third electric room ES3 may be formed between the heat insulation rear plate and the outer rear plate 220. As with the insulated top panel 270, the insulated back panel 280 may reduce heat transfer from the inner back panel 120 to the outer back panel 220.

Referring to fig. 3 and 4, the heat insulation rear plate 280 may be a square plate shape. One side of the insulated rear panel 280 may face the inner rear panel 120 and the opposite side may face the outer rear panel 220. The heat-insulating rear plate 280 is coupled to the inner rear plate 120, and the power supply 770 may be disposed on a surface 281 (see fig. 18) of the heat-insulating rear plate 280 facing the outer rear plate 220. Accordingly, the heat insulation rear plate 280 can prevent heat of the inner ceiling plate 160 from being directly transferred to the power supply part 770.

A spacer 282 may be disposed at a lower portion of the heat insulation rear plate 280. The spacing portion 282 may further protrude from the heat insulation rear plate 280 to the lower side. The spacer 282 may space the lower end of the heat insulation rear plate 280 from the outer bottom plate 250. As shown in fig. 6, air may flow toward an empty space between the lower end of the heat insulation rear plate 280 formed by the spacer 282 and the outer bottom plate 250. Reference numeral 283 denotes a ventilation portion through which air flows. The spacer 282 may be integrally formed with the thermally insulated back plate 280 or may be a separate component assembled to the thermally insulated back plate 280.

Referring to fig. 1, a door 300 may be provided in front of the outer front plate 240. The door 300 functions to open and close the chamber S. The door 300 may be rotated by coupling a hinge assembly provided at a lower portion with a hinge holder 253 (refer to fig. 2) provided at the outer bottom plate 250. The see-through portion 310 of the door 300 is made of a transparent or translucent material so that the cavity S can be viewed from the outside. Reference numeral 320 denotes a handle of the door 300.

Left and right frames 330 may be coupled to sides of the door 300, and a lower frame 340 may be coupled to a lower end of the door 300. Although not shown, an upper frame may be provided at an upper portion of the door 300. These frames may surround the see-through portion 310 to form a skeleton of the door 300.

Further, a display module 350 may be disposed at an upper portion of the door 300. The display module 350 may include an interface that displays the cooking state of the cooking appliance and for a user to operate the cooking appliance. The air suction portion 242 is disposed at a lower side of the display module 350, and the display module 350 does not interfere with the air suction portion 242.

A first heat source module 400 may be disposed at the inner case 100. The first heat source module 400 may generate microwaves to cook the cooking object. In the present embodiment, the first heat source module 400 may be disposed at the inner panel 110 in the inner case 100. Referring to fig. 2, the first heat source module 400 may be disposed outside the inner plate 110 disposed on the left side of the pair of inner plates 110.

Further, since the magnetron 410 of the first heat source module 400 is disposed on the heat insulation rear plate 280, the first heat source module 400 may be regarded as being disposed on the fourth electric chamber ES4 and the fifth electric chamber ES5. In contrast, the first heat source module 400 may be disposed outside the inner plate 110 disposed on the right side of the pair of inner plates 110, or may be disposed outside the inner rear plate 120.

Referring to fig. 3 and 4, the first heat source module 400 may include a magnetron (magnetron) 410 exciting microwaves and a waveguide 420 for guiding the microwaves excited from the magnetron 410 toward the cavity S. At this time, the magnetron 410 may be installed at a portion of the waveguide 420 protruding from the inner plate 110.

Referring to fig. 15 and 16, a guide space 421 opened toward the inner plate 110 may be formed in the waveguide 420, and a stirrer (not shown) for diffusely reflecting microwaves conducted through the waveguide 420 may be disposed in the waveguide 420. Reference numeral 430 denotes a stirrer motor for rotating the stirrer, and 431 denotes a bracket for mounting the stirrer motor.

As shown in fig. 16, a mounting plate 415 may be incorporated into the waveguide 420. In addition, the magnetron 410 may be mounted at the mounting plate 415. Microwaves generated by the magnetron 410 may be conducted to the cavity S through the waveguide 420. Reference numeral 450 is a cover coupled to the inner plate 110 toward the cavity S, and the cover 450 can prevent the damage of the pulsator.

Next, when the second heat source module 500 is viewed, the second heat source module 500 may be disposed on the bottom surface of the case 100, 200. The second heat source module 500 may rapidly heat the cooking object in an induction heating manner. The second heat source module 500 may be fixed to the bottom surface of the case 100, 200. As shown in fig. 2 and 3, in the present embodiment, it may also be considered that the second heat source module 500 forms the bottom of the inner case 100. That is, an upper portion of the second heat source module 500 may be exposed to the cavity S.

The second heat source module 500 may be controlled by the main control part 700. The main control unit 700 may control the second heat source module 500 by an inverter system and linearly control the power of the second heat source module 500. Accordingly, the second heat source module 500 may perform detailed control.

As shown in fig. 5, a container B for holding a cooking object may be disposed at an upper portion of the second heat source module 500. The bottom of the container B may be made of a magnetic metal material such as a stainless steel plate. The cooking objects contained in the container B may also be heated together if the container B is heated by the magnetic field generated in the working coil 570.

Referring to fig. 1, a cover plate 580 for seating the container B may be provided at a central portion of the second heat source module 500. The cover 580 may be disposed at a position facing the heater portion 610 (see fig. 28) constituting the third heat source module 600. Accordingly, a lower portion of the cooking object may be heated by the second heat source module 500, and an upper portion thereof may be heated by the third heat source module 600.

The structure of the second heat source module 500 is shown in fig. 19 to 22. As shown, the second heat source module 500 may include a base plate 510 and a support 520. Further, a mounting bracket 530, a shielding filter 540, and a coil assembly 550 may be disposed between the base plate 510 and the support 520. The bonding structure between such components is described later again.

The base plate 510 is a substantially square plate shape having a base hole 512 penetrating the center thereof, and may be regarded as a bottom plate of the inner case 100 constituting a bottom surface of the cavity S. The cover plate 580 may be disposed in the base hole 512, and the cover plate 580 may be composed of a nonmagnetic material component. The base plate 510 may be made of a metal material of a magnetic material. The base plate 510 composed of a magnetic material composition can block the conduction of microwaves generated by the first heat source module 400 to the working coil 570.

Referring to fig. 20, the supporter 520 is substantially disc-shaped, and a plurality of heat dissipation slits 525 for dissipating heat may be formed in the supporter 520. Further, a coil base 560 and a work coil 570 constituting the coil assembly 550 may be disposed on the top surface 521 of the support 520. The support 520 may function to shield electromagnetic interference (EMI).

Referring to fig. 21, a cross-sectional view of the internal structure of the second heat source module 500 is shown. The mounting bracket 530 may be disposed between the base plate 510 and the support 520. The mounting bracket 530 is coupled to the base plate 510 and the support 520, respectively, so that the base plate 510 and the support 520 can be coupled. In this embodiment, the base plate 510 and the mounting bracket 530 are coupled by welding, and the mounting bracket 530 and the support 520 are coupled by screw fastening. In contrast, the base plate 510 and the support 520 may be fastened by screws, and the mounting bracket 530 and the support 520 may be welded.

At this time, the supporter 520 and the coil base 560 may be coupled to each other by screw fastening. As a result, the coil assembly 550 may be fixed to not only the support 520 but also the base plate 510 via the mounting bracket 530. Therefore, both the upper and lower portions of the coil assembly 550 can be firmly fixed.

A plurality of concave-convex structures may be provided on the base plate 510. The concave-convex structure is used to combine with the mounting bracket 530, the shielding filter 540, and the coil base 560. In the present embodiment, the shielding filter 540 is disposed between the concave-convex structure of the base plate 510 and the coil base 560. The shielding filter 540 may be firmly fixed between the concave-convex structure and the coil base 560.

As shown in fig. 21 and 22, a first cover part 513 may be provided at a position adjacent to an edge of the base hole 512. The first cover part 513 may cover a portion of the edge of the shielding filter 540. An edge of the shielding filter 540 may be pressed between the first cover part 513 and the filter supporting part 561 of the coil base 560. Accordingly, electromagnetic waves generated in the first heat source module 400 do not leak toward the working coil 570 through the gap between the shielding filter 540 and the coil base 560.

A recess 514 may be provided on the outside of the first cover part 513. The recess 514 is a portion of the base plate 510 recessed downward, and may be formed in a circular shape surrounding the first cover 513. A first inclined portion 513a may be formed at a portion of the first cover portion 513 engaged with the recess portion 514. The first inclined part 513a may be formed to face a second inclined part 561a of the coil base 560, which will be described later.

At this time, the first inclined part 513a and the second inclined part 561a may reduce the interval between the base plate 510 and the coil base 560. Thereby, the base plate 510 and the coil base 560 may be aligned in the X-axis and Y-axis directions, so that electromagnetic waves generated in the first heat source module 400 can be prevented from leaking through a gap between the base plate 510 and the coil base 560.

In addition, the first inclined part 513a may press an edge portion of the shielding filter 540. If the first inclined part 513a presses the edge portion of the shielding filter 540 toward the lower side, i.e., in the arrow (1) direction of fig. 21, the shielding filter 540 may be fixed in the X-axis and Y-axis directions, respectively. Therefore, the shielding filter 540 can be firmly fixed without using a fastening member such as a screw.

A seating portion 515 may be provided at an opposite side of the first cover portion 513 through the recess portion 514. A cover plate 580 may be provided on the top surface of the seating portion 515. A settling rail 516 surrounding the settling portion 515 may be provided at an outer side of the settling portion 515. The setting rail 516 may protrude upward, surrounding the edge of the cover plate 580. Thus, the cover plate 580 may be aligned with the inside of the deployment rail 516.

At this time, as shown in fig. 22, the seating part 515 may be formed to be higher than the first cover part 513. Thereby, the cover plate 580 may be in contact with only the seating portion 515, not the first cover portion 513. In addition, the cover plate 580 and the shielding filter 540 may be spaced apart. This reduces vibration generated in the cover 580 when the second heat source module 500 is operated.

Referring to fig. 21, a plurality of heat dissipation slits 525 for dissipating heat may be formed at the supporter 520. Further, a first fastening hole 526 for coupling with the coil base 560 may be formed at the supporter 520. If a fastening member such as a screw (not shown) is coupled to the first fastening hole 526, the supporter 520 and the coil base 560 may be assembled.

A guide protrusion 527 may be provided at the supporter 520. The guide protrusion 527 may be inserted into a guide hole 537 formed in the mounting bracket 530. If the guide protrusion 527 is inserted into the supporter 520, an initial position between the supporter 520 and the mounting bracket 530 may be aligned. Further, if the second fastening holes 528 of the supporter 520 are coupled with the bracket fastening holes 538 of the mounting bracket 530, fastening members (not shown) such as bolts or screws may be inserted therein.

The mounting bracket 530 may be coupled between the base plate 510 and the support 520. The mounting bracket 530 is generally circular frame-shaped, and a bracket penetration portion 532 may be formed at a central portion thereof. As shown in fig. 19, the mounting bracket 530 may include a bracket lower portion 531 having a relatively large diameter and a bracket upper portion 534 having a smaller diameter. The bracket lower portion 531 and the bracket upper portion 534 may be connected by a bracket connection portion 533 having an inclined shape.

At this time, since the mounting bracket 530 is disposed between the base plate 510 and the support 520, the base plate 510 and the support 520 may be spaced apart by at least an amount corresponding to the height of the mounting bracket 530. The coil assembly 550 may be disposed in a separate space between the base plate 510 and the support 520. The height of the holder connection 533 may be the height of the mounting holder 530.

As shown in fig. 21 and 22, the leg upper portion 534 may be laminated on the lower portion of the placement portion 515, and it may be considered that the leg upper portion 534 is disposed between the placement rail 516 and the recess 514. The bracket upper 534 and the base plate 510 may be coupled by welding.

A bracket heat radiating hole 535 for radiating heat may be formed at the bracket connection portion 533. The holder heat radiating holes 535 may be opened laterally. Heat between the support 520 and the base plate 510 may be discharged through the bracket heat-radiating holes 535, and conversely, external air may also flow in through the bracket heat-radiating holes 535 to cool the coil assembly 550.

On the other hand, the bracket lower portion 531 may be combined with an edge portion of the supporter 520. The guide hole 537 is formed in the bracket lower portion 531, and the guide boss 527 of the support 520 may be inserted into the guide hole 537. Reference numeral 538 denotes a bracket fastening hole 538 coupled with the aforementioned second fastening hole 528 of the support 520. Accordingly, the bracket lower portion 531 and the supporter 520 may be coupled by screws or the like.

A shielding filter 540 may be disposed between the cover plate 580 and the coil assembly 550. The shielding filter 540 has a substantially disk structure and may cover an upper portion of the working coil 570. The shielding filter 540 may prevent electromagnetic waves generated in the first heat source module 400 from being conducted to the working coil 570. The shielding filter 540 may be formed of any one of Graphite (Graphene), graphene, carbon fabric (carbon fabric), carbon paper (carbon paper), carbon felt (carbon felt), graphite (Graphene), and Graphene (Graphene).

As described above, in the case where the shielding filter 540 is formed of any one of graphite, graphene, carbon cloth, carbon paper, and carbon felt, the shielding filter 540 may exhibit excellent microwave shielding performance due to its high conductivity. In addition, since the shielding filter 540 maintains the heating of the second heat source module 500, the heating performance of the second heat source module 500 can be maximized. In addition, when the shielding filter 540 is formed of any one of graphite, graphene, carbon cloth, carbon paper, and carbon felt, heat heated by microwaves can be easily discharged due to its high thermal conductivity.

In the present embodiment, the shielding filter 540 may be formed by stacking a graphite plate and a mica sheet (mica sheet). In this case, the mica sheets may be relatively thicker than the graphite plates. For example, when the thickness of the graphite sheet is 0.2mm, the thickness of the mica sheet may be 1.0mm.

The shielding filter 540 may have a diameter larger than that of the working coil 570 and smaller than that of the cover plate 580 and the supporter 520. Thus, the shielding filter 540 may entirely cover the upper portion of the working coil 570 to block microwaves conducted to the working coil 570. In contrast, the shielding filter 540 may smoothly transmit the magnetic field generated by the working coil 570 to the upper portion through the cover 580.

The shielding filter 540 can be fixed to the second heat source module 500 without an additional fastening member. If a fastening member is used, microwaves may flow into the work coil 570 side through a hole or external screw thread or the like for fastening the fastening member to affect the work coil 570. In addition, since an electric field is concentrated at the corners of the hole or sharp external screw portions, arc discharge may occur, and there is a risk of fire. Therefore, in the present embodiment, a structure is adopted in which the shielding filter 540 is fixed without using a fastening member.

The shielding filter 540 may be pressed between the first cover part 513 of the base plate 510 and the filter supporting part 561 of the coil base 560. The first cover part 513 and the filter supporting part 561 may press the edge of the shielding filter 540, more precisely, the first cover part 513 may be in surface contact with the top surface of the shielding filter 540, and the filter supporting part 561 may be in surface contact with the bottom surface of the shielding filter 540. Such a surface contact structure can reduce gaps among the shielding filter 540, the base plate 510, and the coil base 560, and can block inflow of microwaves.

Referring to fig. 22, a first inclined portion 513a formed in the first cover portion 513 at a portion engaged with the recess 514 may face the second inclined portion 561a of the coil base 560. Further, the interval between the first inclined part 513a and the second inclined part 561a may gradually decrease as it is away from the edge of the shielding filter 540. Thereby, the first inclined part 513a and the second inclined part 561a can not only strongly press the edge of the shielding filter 540, but also block a path along which the edge portion of the shielding filter 540 contacts the outside.

In other words, the first inclined part 513a and the second inclined part 561a may reduce the interval between the base plate 510 and the coil base 560. Thereby, the base plate 510 and the coil base 560 may be aligned in the X-axis and Y-axis directions, so that electromagnetic waves generated in the first heat source module 400 can be prevented from leaking through a gap between the base plate 510 and the coil base 560. At this time, the first inclined part 513a may press the end portion of the shielding filter 540 in the arrow (1) direction of fig. 21, so that the shielding filter 540 may be fixed in the X-axis and Y-axis directions, respectively. Therefore, the shielding filter 540 can be firmly fixed without using a fastening member such as a screw.

On the other hand, fig. 20 shows the structure of a coil assembly 550. As shown, a substantially circular base body 562 may be provided at the coil base 560 of the coil assembly 550, and a plurality of coil guides 565 may be provided at the base body. The coil guide 565 may have a plurality of concentric circle structures having different diameters from each other. A coil installation groove 566 may be concavely formed between the plurality of coil guide parts 565, and a working coil 570 may be wound around the coil installation groove 566. Reference numeral 563 denotes a reinforcing rib for reinforcing the strength of the coil base 560.

A fixed cover 577 may be provided at a central portion of the coil assembly 550, and a first temperature sensor 578 may be disposed at the fixed cover 577. The first temperature sensor 578 may measure a temperature of the second heat source module 500. The user may adjust the temperature of the second heat source module 500 based on the temperature of the second heat source module 500 measured by the first temperature sensor 578. Although not shown, the coil assembly 550 may further include Ferrite (Ferrite) as a ceramic magnetic material containing iron oxide (Fe 2O 3) as a main component to increase the density of the magnetic field formed by the working coil 570.

A cover plate 580 may be provided in the base hole 512 of the base plate 510. The cover plate 580 may be generally disc-shaped. The cover plate 580 covers the base hole 512, and may make the top surface of the second heat source module 500 into a planar structure. The cover plate 580 may be made of a nonmetallic composition to pass the magnetic field of the working coil 570. The cover plate 580 may be formed of a glass material having heat resistance to heat or the like, for example, ceramic glass (ceramic glass). The cover plate 580 may also disperse heat of the shielding filter 540.

Referring to fig. 23 to 26, a process of assembling the second heat source module 500 is described. First, as shown in fig. 23, in a state that the base plate 510 is inverted, a mounting bracket 530 may be coupled to the base plate 510. The mounting bracket 530 may be disposed about the perimeter of the base aperture 512. Referring to fig. 21, the bracket upper portion 534 of the mounting bracket 530 may be laminated on the seating portion 515 of the base plate 510. In this state, the holder upper portion 534 and the seating portion 515 may be coupled to each other by welding or the like.

In this state, the shielding filter 540 may be coupled to shield the base hole 512 of the base plate 510. The shielding filter 540 is simply installed at the base plate 510 without performing welding or fastening process based on fastening members. Fig. 24 shows a case where the shielding filter 540 is mounted to the mounting portion 515 of the base plate 510. At this time, referring to fig. 21, the edge of the shielding filter 540 may be guided by the recess 514 of the base plate 510.

Next, the coil assembly 550 and the support 520 may be laminated on the upper side of the shielding filter 540. Since the coil base 560 of the coil assembly 550 is larger than the shielding filter 540, the shielding filter 540 can be completely shielded. Referring to fig. 21 and 22, the filter support 561 of the coil base 560 may be in contact with an edge surface of the shielding filter 540.

In this state, the supporter 520 is disposed at the upper side of the coil assembly 550, and the supporter 520 and the coil base 560 may be fastened to each other by fastening members such as screws. In addition, the support 520 and the mounting bracket 530 may be fastened to each other by fastening members such as screws. At this time, since the mounting bracket 530 is coupled to the base plate 510, the support 520 and the coil assembly 550 may be coupled to the base plate 510 via the mounting bracket 530. Fig. 26 shows the above state.

In this process, the shielding filter 540 may be pressed between the base plate 510 and the coil base 560. That is, both side surfaces of the shielding filter 540 are in surface contact with the seating part 515 and the filter supporting part 561, and can be pressed to be firmly fixed even without an additional fastening member.

Next, a third heat source module 600 will be described with reference to fig. 27 to 31. The third heat source module 600 is disposed at an upper portion of the housing 100, 200. The third heat source module 600 may generate radiant heat to the inside of the chamber S. For this purpose, a heater unit 610 (see fig. 28) may be provided in the third heat source module 600. The heater part 610 may generate radiant heat to the lower side, i.e., the cavity S, to heat the upper portion of the cooking object. The Heater portion 610 may be a Graphite Heater (Graphite Heater). Such a heater part may function as a broil (broil) heater, which may be used for a broil (gril) application using flame heat or radiant heat.

The third heat source module 600 may be fixed to the inner case 100 or the outer case 200. In this embodiment, the third heat source module 600 may be fixed to the heat insulation top plate 270. The third heat source module 600 may be regarded as being disposed in the first electric chamber ES1. Further, an outer top plate 230 is disposed at an upper portion of the third heat source module 600, so that the third heat source module 600 may be shielded. Referring to fig. 1, a case where the third heat source module 600 is shielded by the outer top plate 230 may be observed.

Alternatively, the third heat source module 600 may be moved toward the bottom of the chamber S, that is, the second heat source module 500. The third heat source module 600 may include a moving assembly 630 to move the heater part 610. In the present embodiment, since the heater part 610 moves in the up-down direction, it may also be described that the heater part 610 is lifted.

The third heat source module 600 may include: a moving member 630 for mounting the heater part 610 and protecting the heater part 610; and a fixing unit 640 provided on the heat insulation top plate 270 to control the up-and-down movement of the moving unit 630. In addition, the third heat source module 600 may further include a link assembly 650, the link assembly 650 being disposed at one side of the moving assembly 630 such that the moving assembly 630 is movably coupled to the fixed assembly 640. These structures are described below.

The moving assembly 630 may be provided to be formed separately from the inner case 100 and the outer case 200, and to be capable of moving up and down inside the chamber S. Preferably, the moving unit 630 is configured to surround at least the lateral sides of the heater unit 610 so that the hot air of the heater unit 610 is concentrated to the lower side without being spread laterally.

The moving assembly 630 may have multiple levels of height. For example, the moving assembly 630 may have a first level height at the highest, a second level height at the middle level, and a third level height at the lowest side. The heat transferred to the cooking object by the heater part 610 may be strongest when the moving assembly 630 is located at the third stage height. The main control part 700 may adjust the height of the moving assembly 630 in stages.

The moving assembly 630 may include: a heater cover 632 surrounding and protecting the heater 610; and an insulating member 635 disposed at one end of the heater housing 632 to block heat or electromagnetic waves. As shown, the heater housing 632 may be formed in a square box shape. One or more holes (holes) through which the hot air of the heater unit 610 can pass may be formed in the bottom surface of the heater cover 632.

The heater housing 632 may be moved up and down by a gap between a fixing frame 641 and a protective cover 276, which will be described later. Therefore, the heater cover 632 has a square box shape with an upper opening, and has a predetermined thickness. Preferably, the thicknesses of the four sides of the heater housing 632 are formed to be smaller than the size of the gap between the fixing frame 641 and the protective cover 276.

A guide groove 633 for selectively accommodating a fixing guide 642 described later may be formed in the heater housing 632. That is, as shown in fig. 28, guide grooves 633 recessed downward from the upper end by a predetermined length are formed in the left and right side surfaces of the heater cover 632, and the frame joint portion 643 of the fixed guide 642 is accommodated in such guide grooves 633 when the moving unit 630 is lifted.

As shown, the insulating member 635 may have a square frame shape. Preferably, the side ends of the insulating member 635 are formed to protrude further outward than the side ends of the heater housing 632. That is, the insulating member 635 is formed to have an external size larger than a lateral size of the heater housing 632, so that it can function to block electromagnetic waves from leaking to the outside through a gap between the fixed frame 641 and the protective cover 276 when the moving unit 630 is lifted.

The heater part 610 may be accommodated and fixed inside the heater housing 632. Preferably, the heater part 610 may be formed in a long length in the left-right or front-rear direction, and may be formed in plurality, and may be provided at the inner lower end portion of the heater housing 632. Referring to fig. 7, a total of three heater sections 610 can be seen disposed at the moving assembly 630.

The three heater units 610 may be independently operated. That is, only any one of the three heater units 610 may be operated, or two heaters may be operated, or three heater units 610 may be operated at the same time. The main control part 700 may control the number of the heater parts 610 operated among the three heater parts 610, or may control the time of the operation of the three heater parts 610, or may also control the heights of the moving assembly 630 and the heater parts 610.

Next, a fixing assembly 640 is observed, and the fixing assembly 640 may be fixedly disposed at an upper side of the insulation top plate 270. The fixing member 640 may support the moving member 630 to move in the up-down direction in a state of being supported on the top surface of the insulating top plate 270. Further, a movement control unit 670 may be provided at the fixed assembly 640 to force the moving assembly 630 to move up and down by the operation of the link assembly 650.

The link assembly 650 may be disposed at an upper portion of the moving assembly 630. The link assembly 650 is configured to include one or more links (links) to guide the moving assembly 630 to move up and down in a state of being coupled with the fixed assembly 640. At this time, the upper and lower ends of the link assembly 650 may be rotatably connected to the fixed assembly 640 and the moving assembly 630, respectively.

The insulated top plate 270 may also be considered as part of the securing assembly 640. In addition, the fixing assembly 640 may include a fixing frame 641, the fixing frame 641 being disposed at an upper side of the heat insulation top plate 270, supporting the movement control unit 670.

At this time, the fixing frame 641 may be disposed spaced apart from the protective cover 276 of the insulating top plate 270. More specifically, the protective cover 276 may have a quadrangular shape as a whole, similar to the heat insulating top plate 270, and a hole penetrating up and down may be formed in the central portion of the protective cover 276, similar to the heat insulating top plate 270, to have a square shape. Thus, the moving assembly 630 may move up and down through such central holes of the insulating top plate 270 and the protective cover 276.

The fixing frame 641 may have a quadrangular shape smaller than a quadrangular hole formed in a central portion of the protective cover 276. Accordingly, a predetermined gap is formed between the fixed frame 641 and the protective cover 276, and the heater cover 632 of the moving assembly 630, which will be described later, can be moved in the up-down direction through such a gap.

The fixing frame 641 may be fixedly disposed at an upper side of the heat insulation top plate 270. For this, a fixing guide 642 may be further provided between the heat insulation top plate 270 and the fixing frame 641. As shown, the fixed guide 642 may have a generally "n" shape (when viewed from the front). Accordingly, the upper end of the fixing guide 642 may be coupled with the fixing frame 641, and the lower end may be fixed to the heat insulation top plate 270 or the protective cover 276.

Specifically, as shown in fig. 27, the fixing guide 642 may be composed of a frame coupling portion 643 coupled to the fixing frame 641, an upper coupling portion 644 fixed to the heat insulation top plate 270 or the protective cover 276, and the like, and in the present invention, a case in which the upper coupling portion 644, which is the lower end of the fixing guide 642, is fastened to the top surface of the heat insulation top plate 270 is exemplified.

The fixed assembly 640 may be provided with a slide rail 279 that supports a moving bracket 676, a lead screw nut 673, or the like, which will be described later, so as to be slidable. The sliding guide 279 may be provided on the top surface of the fixed frame 641 and have a prescribed length in the left and right directions. A moving bracket 676, a lead screw nut 673, or the like, which will be described later, may be provided on such a slide rail 279 so as to be movable left and right.

A movement control unit 670 may also be provided at an upper side of the fixed frame 641. The movement control unit 670 may include: a motor 671 for generating rotational power; a lead screw 672 provided at one side of the motor 671 to rotate in association with the rotation generated by the motor 671; and a lead screw nut 673 that is secured to the lead screw 672 by a threaded engagement.

The motor 671 generates rotational power, and a stepping motor (stepping motor) or the like may be used for precise rotational control. Such a stepper motor may provide forward and reverse rotational movement according to the rotational angle by pulse (burst) control.

As shown, the lead screw 672 may be a member having an external screw thread formed on an outer surface of a cylinder having a prescribed length. The lead screw 672 is secured with a lead screw nut 673 having internal threads corresponding to the external threads of the lead screw 672. Accordingly, when the lead screw 672 is rotated by the power of the motor 671, the lead screw nut 673 moves left and right along the lead screw 672. As described above, the Lead Screw (Lead Screw) 672 and the Lead Screw nut 673 function to change the forward/reverse rotational movement to the linear movement.

A coupling 674 connecting one end of the lead screw 672 and a motor shaft may also be provided between the motor 671 and the lead screw 672. That is, as shown in fig. 27, a coupling 674 may be further provided at the right side end of the lead screw 672 and the motor shaft protruding to the left side of the motor 671.

The motor 671 may be disposed on a fixed bracket 675 fixedly mounted to the fixed assembly 640, and the lead screw nut 673 may be mounted on a movable bracket 676 movably disposed on the fixed assembly 640. The moving bracket 676 is provided on the upper side of the fixed frame 641 in such a manner as to be movable toward and away from the fixed bracket 675.

Specifically, the fixed frame 641 is provided at a distance above the heat insulation top plate 270 by a fixed guide 642, and a gap of a predetermined size is formed between the fixed frame 641 and the protective cover 276, so that a moving passage of the heater cover 632 to be described later can be formed.

If the lead screw 672 rotates with the rotation of the motor 671 attached to the fixed bracket 675, the lead screw nut 673 moves left and right, and as a result, the moving bracket 676 moves left and right along the slide rail 279.

The upper ends of the links (links) of the link assembly 650 are rotatably provided at the fixed bracket 675 and the movable bracket 676. That is, if the upper and left ends of the X-shaped links (links) provided to the link assembly 650 are connected to the fixed bracket 675 and the movable bracket 676, respectively, the upper and left ends of the X-shaped links (links) approach or separate from each other as the movable bracket 676 moves left and right, and thus the movable assembly 630 fixed to the lower end of the link assembly 650 moves up and down.

On the other hand, the link assembly 650 has a structure including one or more links, an upper end of which may be rotatably connected to the fixed assembly 640, and a lower end of which may be rotatably connected to the moving assembly 630.

The link assembly 650 may be composed of a pair of front links 651, 652 and rear links 653, 654, etc., which are disposed at a predetermined distance in the front-rear direction. A link frame 655 coupled to the moving assembly 630 may be further provided at lower ends of the front links 651, 652 and the rear links 653, 654.

Further, at least one of the left and right lower ends of the front links 651 and 652 and the rear links 653 and 654 is preferably provided to be movable in a state coupled with the link frame 655. Specifically, the pair of front links 651, 652 may be rotatably coupled with each other with a center at which the front first link 651 and the front second link 652, which form an X-shape, intersect each other, as a rotation center. Further, the pair of rear links 653, 654 may be rotatably coupled with each other with the center at which the rear first link 653 and the rear second link 654, which form an X-shape, intersect each other, as the rotation center.

The lower ends of the front first link 651 and the rear first link 653, which are disposed at a predetermined distance apart from each other, may be connected by a connecting link 658, and the lower ends of the front second link 652 and the rear second link 654 may be connected to each other by a connecting link 658.

Preferably, at least one of the left and right lower ends of the front links 651 and 652 and the rear links 653 and 654 is provided to be movable in a coupled state with the link frame 655. As shown in the drawing, in the present embodiment, a case in which lower ends of the front first link 651 and the rear first link 653 are provided so as to be movable to the left and right of the link frame 655 is illustrated.

Accordingly, a first link protrusion hole 657 may be formed at the left half of the link frame 655, the first link protrusion hole 657 being inserted by the lower end shafts of the front and rear first links 651 and 653 to guide the left and right movement thereof.

Fig. 29 shows the mobile assembly 630 in a first position, and fig. 30 shows the mobile assembly 630 in a second position. When the moving assembly 630 is located at the second position, the heater part 610 is located closer to the cooking object, and thus the cooking object can be heated more rapidly. As shown in fig. 30, when the moving assembly 630 is located at the second position, the fixed guide 642 and the motor 671, etc. constituting the fixed assembly 640 are fixed at the original position without moving.

ON the other hand, fig. 31 shows a state in which the reset switch SW provided ON the heat insulating top plate 270 is pressed to activate the ON (ON) state. The reset switch SW is used to detect the reset of the moving assembly 630 to the first position. The reset switch SW may be pressed by the moving member 630 reset to the first position to be turned on, and when turned on, the main control part 700 may confirm that the moving member 630 has been reset.

If the reset switch SW is pressed to be in an on state, the main control part 700 may detect that the moving assembly 630 is reset to the first position and stop the motor 671. That is, the main control part 700 may prevent the moving assembly 630 from rising toward a position above the first position by stopping the motor 671. In the present embodiment, the rising height of the moving assembly 630 may be limited by the reset switch SW, and the falling height of the moving assembly 630 may be limited by the number of rotations of the motor 671.

The reset switch SW is disposed on the heat insulation top plate 270 or the fixed guide 642, and can be kept in a fixed state regardless of the movement of the moving member 630. The moving unit 630 may be provided with an operation pin P for pressing the reset switch SW to operate the reset switch SW. Since the operating pin P is disposed at the moving unit 630, it can be lifted and lowered together with the moving unit 630.

At this time, the reset switch SW may be provided with an elastic driving portion ED. The elastic driving portion ED may be a member actually pressed by the operating pin P. The elastic driving portion ED may press the reset switch SW if the operating pin P presses the elastic driving portion ED. Since the operation pin P is in a pin form having a very narrow upper end, the contact portion of the reset switch SW may not be accurately pressed. In the present embodiment, the operation pin P presses the wide surface of the elastic driving portion ED, and the elastic driving portion ED presses the reset switch SW again, so that stable driving can be realized.

The reset switch SW and the elastic driving portion ED may be disposed on the switch bracket SB. The switch bracket SB may be disposed on the fixing assembly 640. In the present embodiment, the switch bracket SB may be disposed at the fixing guide 642 of the fixing assembly 640.

As shown in fig. 30, in the present embodiment, the third heat source module 600 may include two reset switches SW. A pair of reset switches SW may be disposed adjacent to the pair of fixed guides 642, respectively. Even if any one of the pair of reset switches SW malfunctions, if the remaining reset switches SW are operating normally, the reset of the moving assembly 630 to the first position can be detected. Of course, only one reset switch SW may be provided.

Referring to fig. 32, the present embodiment may include a distance sensor 710. The distance sensor 710 may measure the presence or absence of the cooking object, the thickness of the cooking object, or the height of the cooking object. The distance sensor 710 measures the thickness or height of the cooking object, and the main control part 700 may differently control the operation and temperature of the first, second, or third heat source modules 400, 500, or 600 according to the measured information. In addition, the distance sensor 710 measures the thickness or height of the cooking object that varies with the cooking time, and the main control part 700 may also control the remaining cooking time or cooking temperature. The distance sensor 710 may be an infrared sensor.

The distance sensor 710 may be disposed on the thermally insulated top plate 270. Referring to fig. 3, a case where a distance sensor 710 is disposed at a front portion of the insulating top plate 270 can be seen. The distance sensor 710 may be disposed at an upper portion of the insulating top plate 270 near the outer front plate 240. When the distance sensor 710 is disposed at the front portion of the heat insulation top plate 270, air flowing in from the outside first passes through the distance sensor 710, and thus the distance sensor 710 can be effectively cooled.

Preferably, the distance sensor 710 is disposed at a center portion with reference to a left-right width of the heat insulation top plate 270 so as to face the center portion of the chamber S. Although the inner top plate 160 is disposed at the lower side of the heat insulating top plate 270, a sensing hole 163 is opened at the inner top plate 160, and thus the distance sensor 710 may sense the inside of the chamber S through the sensing hole 163.

As described above, in the present embodiment, since the distance sensor 710 is disposed on the heat insulating top plate 270, the heat of the chamber S can be prevented from being directly transferred to the distance sensor 710. Accordingly, the durability of the distance sensor 710 can be improved.

Fig. 32 to 35 show the structure of the distance sensor 710. First, referring to fig. 32, the distance sensor 710 may be disposed at a sensor mounting portion 274 provided at the heat insulation top plate 270. The sensor mounting portion 274 may be formed to penetrate the heat insulating top plate 270 in the up-down direction. The sensor housing 711 of the distance sensor 710 may be disposed in the sensor mounting portion 274.

At this time, the heat insulation cover 718 of the distance sensor 710 may be installed at the sensor installation end 274a provided at the sensor installation portion 274. A plurality of sensor mounting ends 274a may be provided at the sensor mounting portion 274, and the plurality of sensor mounting ends 274a may have a structure stepped in a direction of reducing the width of the sensor mounting portion 274. Thereby, the insulating cover 718 can be hung on the sensor mounting end 274a without falling down. The sensor mounting ends 274a may be disposed on different surfaces of the sensor mounting portion 274, respectively.

The distance sensor 710 may include a sensor housing 711 and a distance sensing part 720. The sensor housing 711 may be fixed to the sensor mounting portion 274, and the distance sensing portion 720 may be fixed to the sensor housing 711. In addition, a heat insulating cover 718 may be provided on the lower side of the sensor housing 711. The insulating cover 718 may be made of a glass material for sensing. The insulating cover 718 is used to prevent heat inside the chamber S from being transferred to the distance sensor 710.

Referring to fig. 33, it can be seen that the distance sensor 710 is disposed on the heat insulation top plate 270. The sensor housing 711 of the distance sensor 710 may be disposed on the sensor mounting portion 274 so as to cover the sensor mounting portion 274. A plurality of fixing hooks 713 may be provided at the sensor housing 711. The fixing hooks 713 may hang and fix the distance sensing part 720. In the present embodiment, a total of four fixing hooks 713 are provided at the sensor housing 711.

As shown in fig. 32 and 34, the heat insulating top plate 270 is formed with a locking groove 274b, and the locking base 714 of the sensor housing 711 can be locked to the locking groove 274b. When the sensor housing 711 is rotated in a state where the locking base 714 is locked in the locking groove 274b after the sensor housing 711 is coupled to the sensor mounting portion 274 in an inclined manner, the sensor housing 711 can completely cover the upper side of the sensor mounting portion 274.

At this time, a second cover fastening hole 716 corresponding to the first cover fastening hole 274c of the heat insulation top plate 270 may be formed in the sensor cover 711. When the second cover fastening hole 716 and the first cover fastening hole 274c are connected to each other, a fastening member (not shown) such as a screw may be fastened to the first cover fastening hole 274c and the second cover fastening hole 716. The second cover fastening hole 716 may be provided at an opposite side of the locking stage 714.

Fig. 34 shows a case where both the distance sensing part 720 and the insulating cover 718 are detached from the sensor housing 711 of the distance sensor 710. As shown, after the heat insulation cover 718 is first disposed at the sensor disposition end 274a of the sensor mounting portion 274, the assembly of the sensor housing 711 and the distance sensing portion 720 may be disposed above the heat insulation cover 718.

Referring to fig. 35, the distance sensing unit 720 disposed in the sensor housing 711 may be inclined. More precisely, the sensing element 725 disposed at the distance sensing portion 720 faces in an oblique direction. Based on fig. 35, the sensing element 725 is disposed toward the lower left side. Thereby, the sensing element 725 may be directed towards the center of the cavity S. For reference, referring to fig. 7, it can be seen that the distance sensor 710 is installed obliquely toward the center of the cavity S.

Next, the camera module 730 is described with reference to fig. 36 to 42. The camera module 730 is used for observing the inside of the cavity S. The camera module 730 enables a user to observe the cooking object inside the cavity S in real time, and enables control of an appropriate cooking temperature and time by enabling the main control part 700 to analyze the image photographed by the camera module 730.

The camera module 730 may be disposed at the camera mounting portion 128 provided at the inner rear plate 120. As shown in fig. 36, the camera mounting portion 128 protrudes rearward from the inner rear plate 120. Conversely, a heat insulation space 128c recessed into the camera mounting portion 128 may be formed inside the cavity S (refer to fig. 41). The heat insulation space 128c recessed as described above may provide a view angle enabling the camera sensor 745 of the camera module 730 to photograph the inside of the cavity S in a wide range, and the heat insulation space 128c may become a space for heat insulation, thereby enabling damage of the camera sensor 745 to be prevented.

Looking at the camera mounting part 128, an upper portion of the camera mounting part 128 may have an inclined structure. The camera module 730 may be disposed at the inclined plane portion 128a of the camera mounting portion 128. In this way, the camera sensor 745 may naturally face in an oblique direction and toward the center portion of the cavity S.

A photographing hole 128b may be formed at the planar portion 128a of the camera mounting portion 128. The camera sensor 745 may be exposed to the inside of the cavity S through the photographing hole 128b. Therefore, the center of the camera sensor 745 needs to be aligned with the photographing hole 128b. For this purpose, a plurality of cover fixing holes 129a, 129b may be formed in the planar portion 128a of the camera mounting portion 128. The cover fixing holes 129a, 129b include a first fixing hole 129a and a second fixing hole 129b, and the camera module 730 may be fixed to the cover fixing holes 129a, 129b.

More precisely, a first fixing hole 129a may be formed at one side and a second fixing hole 129b may be formed at the opposite side with respect to the photographing hole 128b. In this embodiment, the second fixing hole 129b is formed by two, and the play in the up-down direction can be reduced.

The camera module 730 may include a camera housing 731 and a camera substrate 740 mounted to the camera housing 731. Further, a camera sensor 745 may be mounted on the camera substrate 740. After the camera substrate 740 is first assembled to the camera housing 731, the camera module 730 may be mounted on the planar portion 128a of the camera mounting portion 128. Fig. 37 shows a case where the camera module 730 is mounted to the planar portion 128a of the camera mounting portion 128. For reference, the camera substrate 740 and the camera sensor 745 may both be considered as one camera sensor.

Fig. 38 shows a state in which the camera module 730 is disassembled. As shown, the camera housing 731 may have a substantially hexahedral shape extending long in the left-right direction. The camera housing 731 is formed with a substrate mounting space 732a in which the camera substrate 740 is disposed. The substrate mounting space 732a may be formed deeper than the thickness of the camera substrate 740.

A lens through hole 732 may be formed in the substrate mounting space 732a to expose a lens of the camera sensor 745. The lens through hole 732 may be opened toward the inside of the chamber S. The lens through hole 732 may overlap with the imaging hole 128b of the planar portion 128a to form a continuous hole. For reference, fig. 8 shows a case where the camera sensor 745 is exposed to the inside of the chamber S.

The camera housing 731 may be provided with a substrate hook 733. The substrate hook 733 is used for locking and fixing the edge of the camera substrate 740. The substrate hook 733 may protrude from an edge of the camera housing. In the present embodiment, a total of four substrate hooks 733 are disposed on the camera housing 731, but the substrate hooks 733 may be three or less or five or more.

Referring to fig. 39, camera mounting hooks 734a, 734b may be provided on opposite sides of the substrate mounting space 732a of the camera housing 731. The camera mounting hooks 734a, 734b may include a first mounting hook 734a and a second mounting hook 734b provided at left and right sides of the camera housing 731, respectively. The first and second mounting hooks 734a and 734b may be engaged with the first and second fixing holes 129a and 129b formed in the planar portion 128a, respectively. At this time, the second mounting hooks 734b may be formed in two to correspond to the second fixing holes 129b, so that the up-down play of the camera module 730 may be reduced. Fig. 40 shows a case where the first and second mounting hooks 734a and 734b are fixed to the first and second fixing holes 129a and 129b, respectively.

A resilient arm 735 may be provided on the camera housing 731. The resilient arm 735 may have a cantilever shape protruding from the camera housing body 731 toward the planar portion 128a. In this embodiment, a pair of elastic arms 735 are provided on the camera housing 731. When the camera housing 731 is mounted to the camera mounting portion 128, the elastic arm 735 may press the flat portion 128a while elastically deforming. In this way, the elastic arm 735 is firmly abutted against the flat portion 128a, so that the camera module 730 can maintain a firmly fixed state even if vibration occurs during operation of the cooking apparatus. Fig. 41 shows the case where the elastic arm 735 is abutted against the flat portion 128a.

The pair of elastic arms 735 may be provided around the lens through hole 732. Further, if the first and second mounting hooks 734a and 734b are disposed right and left with respect to the lens through hole 732, the pair of elastic arms 735 may be disposed up and down with respect to the lens through hole 732. Thus, the camera module 730 can be firmly fixed to the camera mounting portion 128 in both the left-right direction and the up-down direction, and can be fixed without play in the front-rear direction because the pair of elastic arms 735 are elastically supported by the planar portion 128 a.

As shown in fig. 41, a camera cover 738 may be provided to the camera mounting portion 128. The camera cover 738 may be made of a transparent or translucent material to enable the camera sensor 745 to capture images of the interior of the cavity S. The camera cover 738 is disposed in front of the camera module 730, so that the camera sensor 745 can be prevented from being damaged by heat inside the cavity S. The camera cover 738 may be disposed on the opposite side of the planar portion 128a, and in this embodiment, the camera cover 738 may shield the concave insulating space 128c.

Referring to fig. 7, in the present embodiment, the camera module 730 may face the center direction of the cavity S. More precisely, the lens of the camera module 730 may be directed towards the center of the bottom face of the cavity S. Since the cooking object is disposed at the bottom surface center of the cavity S, it is preferable that the lens of the camera module 730 is directed toward the bottom surface center of the cavity S.

Next, the humidity sensing module 750 and the second temperature sensor 760 are described with reference to fig. 43. The humidity sensing module 750 may detect the moisture amount, i.e., humidity, inside the chamber S in real time and transmit the detected moisture amount to the main control part 700. The Humidity sensing module 750 may include a Humidity Sensor (humidities Sensor) that detects the internal Humidity of the chamber S, a signal converter that converts a Humidity detection signal of the Humidity Sensor into a digital signal, a signal transmission module that transmits the Humidity detection signal to the main control part 700, and the like.

Here, the humidity sensing module 750 may be installed in such a manner as to penetrate the inside and outside of the exhaust duct 940, which will be described later, and may detect the internal humidity of the chamber S. Since the exhaust duct 940 is a portion that exhausts the air inside the chamber S, the humidity sensing module 750 may be disposed at the exhaust duct 940 to accurately measure the humidity inside the chamber S. In the present embodiment, the humidity sensing module 750 is disposed at a position facing the exhaust port 125 of the inner panel 110, so that sensing accuracy can be improved.

A second temperature sensor 760 may be provided at the exhaust pipe 940. The second temperature sensor 760 is used to measure the temperature inside the chamber S. The second temperature sensor 760 may be disposed at the exhaust pipe 940 to accurately measure the temperature inside the chamber S. The aforementioned first temperature sensor 578 may measure the temperature of the second heat source module 500, and the second temperature sensor 760 may measure the temperature inside the chamber S. The main control part 700 may control the first, second, or third heat source modules 400, 500, or 600 based on the temperature measured by the second temperature sensor 760.

On the other hand, a temperature cut-off switch may be added to the exhaust pipe 940, although not shown. The temperature cut-off switch may be a safety switch that cuts off the power supply when the internal temperature of the chamber S is a set temperature or more. In this case, the temperature cut-off switch may be provided instead of the second temperature sensor 760.

A third temperature sensor (not shown) may be additionally disposed in the first electric room ES 1. The third temperature sensor may be printed on the insulating top plate 270 or the inner top plate 160. The third temperature sensor may use any one of an NTC (negative temperature coefficient: negative temperature coefficient) type in which a resistance value decreases with an increase in temperature and a PTC (positive temperature coefficient: positive temperature coefficient) type in which a resistance value increases with an increase in temperature.

Referring to fig. 6 and 18, a power supply 770 is provided in the cooking apparatus. The power supply part 770 may function to receive an external power and transmit it to the internal parts of the cooking apparatus. The power supply 770 may include a high voltage transformer 771, a high voltage capacitor 773, and a fuse 775. The components constituting the power supply 770 are only examples, and components may be added or a part may be omitted.

The high voltage transformer 771 may function to apply a high voltage current to the magnetron 410. For example, the high-voltage transformer 771 may be a component for boosting a house voltage, typically 100 to 220V, to a high voltage. In addition, the high voltage transformer 771 may supply power to the working coil 570 of the second heat source module 500 or the heater portion 610 of the third heat source module 600. In the drawing, a bus bar (bus bar) or a wire harness for connecting the high voltage transformer 771 and the magnetron 410 and the like is omitted.

In the present embodiment, the power supply 770 is disposed on the surface 281 of the heat-insulating rear plate 280. The heat insulation rear plate 280 is coupled with the inner rear plate 120 to prevent heat of the inner rear plate 120 from being directly transferred to the power supply part 770. As shown in fig. 18, the heat-insulating rear plate 280 may have a substantially square plate shape, and may have a camera avoiding hole 288 for avoiding interference with the camera module 730.

The high voltage transformer 771 is fixed to the back surface 281a of the heat insulation rear plate 280, and the high voltage capacitor 773 may be mounted to the back surface 281a of the heat insulation rear plate 280 through an additional capacitor bracket 774. In the present embodiment, the high-voltage transformer 771 is disposed on the right side with reference to the center of the heat-insulating rear plate 280. More precisely, as shown in fig. 10, the high voltage transformer 771 may be disposed at a lower portion of the second cooling fan module 850.

Referring to fig. 32, a lighting device 790 may be disposed at the inner ceiling panel 160. The lighting device 790 may be attached to the lighting attachment portion 165 of the inner ceiling panel 160 through the lighting penetration portion 273 of the heat insulation ceiling panel 270. The illumination mounting part 165 is formed in an inclined direction, and an illumination hole 165a is formed at the center thereof, so that light irradiated from a light source of the illumination device 790 can be directed to the cavity S.

The lighting device 790 may include a lighting enclosure 791 and a lighting substrate 795. The illumination cover 791 is provided with an illumination hook 793 for fixing the illumination board 795. In this embodiment, the lighting device 790 is directly mounted to the inner ceiling panel 160 without an additional heat insulating cover.

Referring to fig. 2, cooling fan modules 810, 850 are provided at the cooking apparatus. The cooling fan modules 810 and 850 serve to cool the cooking apparatus and suck external air to supply the inside of the cavity S, may suck the air outside the cooking apparatus, and may discharge the cooled air inside the cooking apparatus to the outside. In this embodiment, the cooling fan modules 810, 850 include a first cooling fan module 810 and a second cooling fan module 850. The first cooling fan module 810 and the second cooling fan module 850 may be disposed at an upper portion than a lower portion of the cavity S.

The first cooling fan module 810 and the second cooling fan module 850 may be disposed above the heat insulation top plate 270. In this case, the first cooling fan module 810 and the second cooling fan module 850 may be disposed around the third heat source module 600. The cooling fan modules 810, 850 configured in this way can cool the third heat source module 600 from various directions.

The first cooling fan module 810 and the second cooling fan module 850 may be disposed in directions orthogonal to each other. The cooling fan modules 810, 850 configured in this manner may form a continuous flow path for air to flow. Referring to fig. 9, the second cooling fan module 850 may suck air from the front of the cooking apparatus (the lower side of fig. 9), a part of the sucked air is transferred to the second cooling fan module 850 (arrow (3)), and a part may flow in the direction of the first cooling fan module 810 (arrow (2)). That is, the second cooling fan module 850 may guide the outside air to be sucked into the first cooling fan module 810.

In addition, the first cooling fan module 810 and the second cooling fan module 850 may discharge air toward surfaces different from each other among the surfaces of the inner case 100. The first cooling fan module 810 may discharge air toward the rear surface of the inner case 100, more precisely, toward the third electric chamber ES3, and the second cooling fan module 850 may discharge air toward the side surface of the inner case 100, more precisely, toward the fifth electric chamber ES 5. The air discharged in this manner can be merged in the second electric chamber ES2 and discharged to the outside through the air discharge portion 243.

Fig. 17 shows the first cooling fan module 810. The first cooling fan module 810 may be disposed on the heat insulation top plate 270. The first cooling fan module 810 may be mounted to a fan plate 811. The fan plate 811 is fixed to the heat insulation top plate 270, and the first cooling fan module 810 is mounted to the fan plate 811. The fan plate 811 may be laminated on the heat insulation top plate 270. The fan plate 811 may be omitted or may be integrally provided to the heat insulating top plate 270.

At this time, a plate hole through which air discharged from the first cooling fan module 810 can pass is formed in the fan plate 811. The plate holes may be connected to first and second through portions 278a and 278b formed in the heat insulating top plate 270. To this end, the plate holes may include a first plate hole 812a connected to the first through portion 278a and a second plate hole 812b connected to the second through portion 278 b.

A first fan bracket 815 may be provided at the fan plate 811. The first fan bracket 815 is used to mount the first cooling fan module 810 to the insulated top plate 270. In the present embodiment, a pair of first fan brackets 815 are disposed apart from each other, and a pair of the first fan brackets 815 may be coupled to the first driving housing 817a and the second driving housing 817b, respectively.

A first fan motor 820 may be provided at either one of the pair of first fan brackets 815. A rotary shaft (not shown) is connected to the first fan motor 820, and a pair of first fan blades 825a and 825b are coupled to the rotary shaft. The rotation shaft extends from the first fan motor 820 to both sides, and a pair of first fan blades 825a, 825b may be coupled to both sides of the rotation shaft, respectively. Fig. 17 shows only the first driving blade 825a disposed on the right side of the pair of first fan blades 825a, 825b, and the second driving blade 825b is shown in fig. 12 of the cooking apparatus as viewed from the left side.

The pair of first fan blades 825a, 825b may discharge air downward, i.e., in the gravity direction. Referring to fig. 10, two air streams are discharged downward from the first cooling fan module 810. Two air streams may be discharged to the third electric chamber ES3, respectively. Since the high voltage transformer 771 of the power supply part 770 and the magnetron 410 of the first heat source module 400 are disposed in the third electric room ES3, they can be cooled by the first cooling fan module 810.

More precisely, the magnetron 410 constituting the first heat source module 400 may be disposed below the first driving housing 817a, and the high voltage transformer 771 constituting the power supply 770 may be disposed below the second driving housing 817 b. Accordingly, the first cooling fan module 810 may cool both the power supply part 770 and the first heat source module 400.

The air discharged from the first cooling fan module 810 may flow into the second electric chamber ES2 by moving downward through the third electric chamber ES 3. Fig. 12 shows a case where the air discharged from the first cooling fan module 810 moves toward the front (in the direction of arrow (2)) after moving toward the lower side (in the direction of arrow (1)). In this process, the second heat source module 500 may also be cooled together.

Next, fig. 44 shows a second cooling fan module 850. The second cooling fan module 850 may cool the cooking apparatus and may smoothly supply external air into the cavity S, as in the first cooling fan module 810. Looking at the structure of the second cooling fan module 850, the second cooling fan module 850 may include a second fan housing 852 forming a skeleton, a second fan bracket 855 mounted to the second fan housing 852, and a second fan motor 860.

Referring to fig. 5, the second fan housing 852 may be mounted to the heat insulating top plate 270. At this time, an additional guide rail GF may be erected on the heat insulation top plate 270, and the second fan housing 852 may be mounted to the guide rail GF. The guide rail GF may be a substantially plate-like structure. The guide rail GF may be disposed in the front-rear direction, that is, in the depth direction of the cavity S.

At this time, the guide rail GF may guide the flow of the air flowing into the upper portion of the cooking apparatus, i.e., the first electric chamber ES 1. As shown in fig. 9, an air flow path may be formed between the heater housing 632 and the guide rail GF. If the first cooling fan module 810 is operated, air may flow in the direction of the first cooling fan module 810 (arrow (2)) through the air flow path.

That is, the guide rail GF to which the second cooling fan module 850 is mounted may form a separate air flow path separated from an air flow path sucked in the direction of the second cooling fan module 850 (the direction of arrow (1)). Air drawn in the direction of the first cooling fan module 810 (arrow (2)) may cool the third heat source module 600 during the drawing.

At this time, the first cooling fan module 810 and the second cooling fan module 850 may cool the periphery of the heater housing 632 when the third heat source module 600 is located at the first position (refer to fig. 29), and the first cooling fan module 810 and the second cooling fan module 850 may cool the entire third heat source module 600 while passing through the upper portion of the third heat source module 600 when the third heat source module 600 is located at the second position (refer to fig. 30).

Referring back to fig. 44, a bracket mounting portion 852a for mounting the second fan bracket 855 is provided in the second fan housing 852. A cover mounting portion 852b in which the second fan cover 857 is disposed on one side, and a motor mounting portion 852c in which the second fan motor 860 is mounted is disposed on the opposite side, with reference to the bracket mounting portion 852a. The second fan housing 857 is disposed closer to the door 300 than the second fan motor 860. Reference numeral 859 denotes a fastening portion for fixing the second fan housing 852 to the heat insulating top plate 270.

At this time, the bracket mounting portion 852a, the cover mounting portion 852b, and the motor mounting portion 852c may be provided at an upper side than the lower end of the second fan housing 852. Thus, the second fan motor 860 and the second fan blades 865 may be disposed at a higher position than the lower end of the second fan housing 852. In addition, the second fan motor 860 and the second fan blade 865 may be spaced apart from the insulating top plate 270. As described above, when the second fan blade 865 is spaced apart from the heat insulation top plate 270, the suction performance of the second fan blade 865 can be improved.

A rotation shaft 861 may be connected to the second fan motor 860, and the second fan blade 865 may be connected to the rotation shaft 861. At this time, the second fan blades 865 may be received inside the second fan housing 857, and air may be sucked through an inlet of the opening of the second fan housing 857. Further, the second fan blades 865 may discharge air toward a portion opened downward from the second fan housing 857. In the present embodiment, only one second fan blade 865 is connected to the rotation shaft 861, but the second fan blades 865 may be connected to both sides of the rotation shaft 861.

Referring to fig. 6, air is circulated through the second cooling fan module 850. As shown in the drawing, air discharged downward (in the direction of arrow (4)) from the second cooling fan module 850 may pass through the main control unit 700 disposed in the fourth electric chamber ES4 and cool the main control unit 700. Further, the air further moved to the lower side may flow into the second electric chamber ES2, and may move forward, i.e., in the door 300 direction (arrow (5)) and be discharged through the air discharge portion 243 of the outer front plate 240. In this process, the second heat source module 500 may also be cooled together.

Referring to fig. 4 and 12, a supply duct 910 may be provided at the inner case 100. The supply duct 910 is disposed to cover the suction port 123 of the inner case 100. The supply duct 910 may form a path for air of the electric room to flow into the inside of the chamber S. The air flowing into the chamber S through the supply duct 910 and the suction port 123 may remove moisture inside the chamber S. At this time, the air flowing in through the air inlet 123 may be a part of the air having a heat dissipation (cooling) effect while passing through the inside of the housing 100, 200.

Referring to fig. 12, the supply duct 910 may extend in a shape with one end bent. This is to prevent the supply pipe 910 from interfering with the waveguide 420 of the first heat source module 400. That is, the supply duct 910 is disposed at the inner side plate 110 of the inner case 100 where the waveguide 420 is disposed, and the supply duct 910 is disposed to have a different height from the waveguide 420.

One end portion of the supply duct 910 may cover the suction port 123, and the remaining portion may be closely attached to an outer side surface of the inner panel 110 to form a flow path therein. Such a supply duct 910 can smoothly supply air into the chamber S by transferring air discharged from the first cooling fan module 810 to the air inlet 123.

Further, a duct assembly 920 as an opening and closing device capable of blocking inflow of air may be provided at the other end portion of the supply duct 910. As shown in fig. 10, the duct assembly 920 may be disposed at the third electric room ES3. More precisely, the duct assembly 920 is disposed at a lower portion of the first driving housing 817a of the first cooling fan module 810. Thereby, the air discharged from the first driving cover 817a can be transferred to the duct assembly 920.

The conduit assembly 920 may connect or disconnect the supply conduit 910 to the third electrical chamber ES3. That is, the duct assembly 920 may selectively supply air to the inside of the chamber S through the supply duct 910. To this end, the pipe assembly 920 includes a pipe motor 930, and the operation of the pipe motor 930 may be controlled by the main control part 700.

Fig. 45 and 46 illustrate a conduit assembly 920. The duct assembly 920 may include a duct housing 921, a duct blade 925 rotatably coupled to the duct housing 921, and a duct motor 930 to rotate the duct blade 925. A duct bracket 922a for fixing the duct assembly 920 to the housing 100, 200 or the heat insulation rear plate 280 may be provided at the duct cover 921.

The duct blade 925 is assembled in the operation space 923b (see fig. 46) of the duct cover 921. The duct blade 925 may be rotated to open and close the inlet 923a of the duct cover 921. The duct blade 925 may open the inlet 923a of the duct cover 921 while rotating in the inside direction of the duct cover 921 (the direction of arrow (1) in fig. 45). Reference numeral 925a denotes a hinge portion coupled to a rotation shaft of the duct blade 925.

A duct switch 927 may be provided in the duct cover 921. The conduit switch 927 may be mounted to a switch 922c of the conduit housing 921. During rotation of the duct blade 925, the duct switch 927 may be pressed to be in an on state. If the duct switch 927 is turned on, the main control unit 700 may detect that the duct blade 925 is in a fully opened state.

A pipe motor 930 is disposed in the motor mounting member 922b of the pipe cover 921. The pipe motor 930 may provide a rotational force to the pipe blade 925. The duct motor 930 may be disposed on the surface of the duct cover 921, and a rotation shaft 933 of the duct motor 930 may be connected to a hinge portion 925a of the duct blade 925. Reference numeral 931 denotes a fixing member of the pipe motor 930 coupled to the motor mount 922 b.

On the other hand, referring to fig. 5, an exhaust duct 940 may be disposed in the fifth electric room ES 5. The exhaust duct 940 may cover the exhaust ports 125 of the inner case 100. The exhaust duct 940 is disposed in the fifth electric room ES5, and guides the movement of the air discharged from the exhaust port 125. The exhaust duct 940 may be disposed on the surface of the inner panel 110 in the gravity direction. Thereby, the air in the chamber S discharged from the exhaust port 125 can move downward. The air moving downward is guided to the second electric room ES2, and can be discharged from the air discharge portion 243 of the outer front plate 240.

As shown in fig. 11, the exhaust duct 940 may be disposed at an inner side plate 110 of the inner case 100 where the main control part 700 is disposed. That is, the exhaust duct 940 may be disposed on the same surface of the inner panel 110 together with the main control unit 700. At this time, the exhaust duct 940 may be disposed at a position farther from the door 300 than the main control part 700. Accordingly, the air inside the cavity S may be discharged from the rear of the case 100, 200 away from the door 300, and may pass through the lower portion of the second heat source module 500 during the discharge along the second electric chamber ES2, and thus the second heat source module 500 may also be cooled.

Fig. 43 shows the structure of the exhaust pipe 940 in detail. As shown, the exhaust duct 940 may be formed to be substantially longer in the up-down direction. A shielding portion 941 for preventing air leakage may be provided along an edge of the exhaust duct 940. Further, a stepped portion 943 having a relatively small thickness may be provided at one side of the exhaust duct 940, and a part of the main control portion 700 may be disposed at the stepped portion 943. In addition, as described above, in the present embodiment, the second temperature sensor 760 and the humidity sensing module 750 may be disposed at the exhaust pipe 940.

A guide vane 945 may be provided at a lower end of the exhaust duct 940. Unlike the shielding portion 941, the guide blade 945 extends in a downward inclined direction. Thus, the guide vanes 945 may act as outlets for the air to exit. The guide blade 945 extends toward the second electric room ES2, so that the air of the exhaust duct 940 can be discharged toward the second electric room ES 2.

Referring to fig. 4 and 6, an air baffle 950 may be disposed between the outer front plate 240 and the heat insulation rear plate 280. The air baffle 950 serves to prevent a phenomenon in which air discharged by the first cooling fan module 810 and the second cooling fan module 850 is re-sucked to the first cooling fan module 810 or the second cooling fan module 850. That is, the air baffle 950 may prevent the air discharged from the first cooling fan module 810 and the second cooling fan module 850 and flowing into the second electric chamber ES2 through the third electric chamber ES3 and the fifth electric chamber ES5, respectively, from being transferred to the fourth electric chamber ES4.

As shown in fig. 6, the air discharged from the first cooling fan module 810 in the direction of the third electric chamber ES3 (the directions of arrows (1) and (2)) is transferred to the second electric chamber ES2. At this time, the air baffle 950 disposed at the left side prevents the air discharged from the first cooling fan module 810 from entering the fourth electric room ES4 located opposite to the air baffle 950. Thereby, the air discharged from the first cooling fan module 810 can move forward (in the direction of arrow (5)) and be discharged to the outside through the air discharge portion provided in the outer front plate 240.

The air discharged in the downward direction (the direction of arrow (3)) through the exhaust duct 940 and the air discharged in the direction of the fifth electric chamber ES5 (the direction of arrow (4)) through the second cooling fan module 850 are transmitted to the second electric chamber ES2. At this time, the air baffle 950 disposed at the left side prevents the air discharged from the exhaust duct 940 and the second cooling fan module 850 from entering the fourth electric room ES4 located opposite to the air baffle 950. Thus, the air discharged from the exhaust duct 940 and the second cooling fan module 850 can be moved forward (in the direction of arrow (5)) and discharged to the outside through the air discharge portion provided in the outer front plate 240.

The air baffle 950 may be disposed across between the outer front panel 240 and the insulated rear panel 280 to control the flow of such air. In addition, the air barrier 950 may be connected between the outer front plate 240 and the heat insulation rear plate 280, so that it may function to reinforce the strength of the entire housing 100, 200 while supporting the lower portion of the housing 100, 200.

Fig. 5 to 13 show an air circulation structure inside the cooking apparatus of the present embodiment. Since the first, second, and third heat source modules 400, 500, and 600 are provided in the cooking apparatus of the present embodiment, it is necessary to efficiently cool heat generated in these heat sources. The cooling structure of such a heat source and other components will be described below.

First, the part to be cooled in this embodiment is observed: (i) In the first electric room ES1, the lighting device 790, the distance sensor 710, the third heat source module 600, and the third temperature sensor (not shown) need to be cooled; (ii) In the second electric room ES2, the second heat source module 500 needs cooling; (iii) In the third electric room ES3, the power supply section 770 and the camera module 730 need to be cooled; (iv) In the fifth electric room ES5, the main control unit 700, the humidity sensing module 750, the second temperature sensor 760, and a temperature cut-off switch (not shown) need to be cooled.

Further, in order to cool them, in the present embodiment, the aforementioned first cooling fan module 810 and second cooling fan module 850 are provided. The first cooling fan module 810 may cool the second and third electric cells ES2 and ES3, and the second cooling fan module 850 may cool the first, second, and fifth electric cells ES1, ES2, and ES5. Of course, since the first cooling fan module 810 is also disposed at the upper portion of the cases 100 and 200, a part of the first electric room ES1 can be cooled. In addition, since the first cooling fan module 810 discharges air in the direction of the duct assembly 920 disposed in the third electric chamber ES3, the first cooling fan module 810 can also function to supply air into the chamber S.

Specifically, as shown in fig. 5, in the present embodiment, both the air suction portion 242 that sucks in the outside air and the air discharge portion 243 that re-discharges the air are disposed on the front surface of the cooking apparatus. The external air may flow in from the upper front side of the cooking apparatus and may be discharged again from the lower front side after being circulated inside the cooking apparatus. Therefore, even if the cooking apparatus of the present embodiment is provided in an embedded manner, smooth air circulation can be achieved.

In addition, as shown in fig. 5 and 6, a plurality of electric chambers are provided at the outer side of the inner case 100 of the present embodiment, and air can efficiently cool components while flowing in the electric chambers. At this time, the air baffle 950 can prevent the air flowing into the second electric chamber ES2 from moving upward again through the fourth electric chamber ES4, and as a result, the air can move forward and be discharged from the air discharge portion 243 after cooling the second heat source module 500 of the second electric chamber ES 2.

In the present embodiment, the heat insulating top plate 270 and the heat insulating rear plate 280 are disposed outside the inner case 100, respectively, so that heat in the chamber S can be prevented from being directly transferred to the components. It can be considered that the heat insulation top plate 270 and the heat insulation rear plate 280 perform a cooling function of the cooking apparatus together with the first cooling fan module 810 and the second cooling fan module 850.

As shown in fig. 5, the first cooling fan module 810 is disposed on the heat insulating top plate 270, more precisely, at a position offset from the center of the heat insulating top plate 270 toward the third electric chamber ES3 and the fourth electric chamber ES4 (left side in the drawing). The second cooling fan module 850 is also disposed on the heat insulating top plate 270, more precisely, at a position offset from the center of the heat insulating top plate 270 toward the fifth electric chamber ES 5.

Referring to fig. 9, the flow of air drawn through the first cooling fan module 810 and the second cooling fan module 850 is shown. The air sucked through the outer front plate 240 flows into the first cooling fan module 810. At this time, since the first driving cover 817a and the second driving cover 817b are provided in the first cooling fan module 810, air can flow in two. At this time, the air flowing in from the left side (the direction of arrow (1)) through the first driving cover 817a can move along the heater cover 632 of the third heat source module 600 and the outer ceiling 230 (omitted in fig. 9) disposed at the left side edge of the cases 100 and 200. The air flowing in from the right side (the direction of arrow (2)) through the second driving cover 817b can move along the space between the heater cover 632 of the third heat source module 600 and the guide rail GF. In this process, the distance sensor 710, the lighting device 790, and the third heat source module 600 may be cooled.

Meanwhile, the second cooling fan module 850 may also suck in external air through the outer front plate 240. Air flowing in the direction of the second cooling fan module 850 (the direction of arrow (3)) may cool the first electric chamber ES1 while moving in the direction of the second cooling fan module 850.

In addition, the air sucked through the first cooling fan module 810 and the second cooling fan module 850 moves toward the lower side of the cooking apparatus. Referring to fig. 6, the air sucked by the first cooling fan module 810 is discharged downward, that is, in the direction of the third electric chamber ES3 (in the directions of arrows (1) and (2)). In this process, the power supply part 770 may be cooled. In particular, since the high voltage transformer 771 generating the highest heat is disposed at the lower side of the second driving cover 817b of the first cooling fan module 810, the high voltage transformer 771 can be efficiently cooled.

The air passing through the third electric room ES3 flows into the second electric room ES2 through the ventilation part 283 formed at the lower part of the heat insulation rear plate 280. The air cooled by the second heat source module 500 in the second electric room ES2 may be discharged to the outside (in the direction of arrow (5)) through the air discharge portion 243.

On the other hand, the air sucked by the second cooling fan module 850 is also discharged downward, that is, in the direction of the fifth electric chamber ES5 (in the direction of arrow (4) in fig. 6). In this process, the main control part 700, the humidity sensing module 750 disposed at the exhaust pipe 940, and the second temperature sensor 760 may be cooled. In particular, since the main control part 700 generating high heat is disposed at the lower side of the second fan blade 865, the main control part 700 can be effectively cooled.

Then, the air passing through the fifth electric room ES5 flows into the second electric room ES2. The air cooled by the second heat source module 500 in the second electric room ES2 may move forward (in the arrow (5) direction) and may be finally discharged to the outside (in the arrow (5) direction) through the air discharge portion 243.

As shown in fig. 6, air may also be transferred through the exhaust duct 940 in the direction of the second electric chamber ES2. The exhaust duct 940 may be transferred to the second electric chamber ES2 by guiding the air discharged from the chamber S toward the lower side (arrow (3) direction). In addition, the air discharged from the chamber S in this way can also be discharged to the outside (in the direction of arrow (5)) through the air discharge portion 243.

Referring to fig. 13, a duct flow path 942 may be formed in the exhaust duct 940, and air may move downward (in the direction of arrow (1)) along the duct flow path 932. In addition, air may flow into the second electric chamber ES2 through the guide vane 945 provided at the lower portion of the exhaust duct 940.

Referring to fig. 10, a magnetron 410 constituting the first heat source module 400 is disposed at a lower portion of the first driving cover 817a of the first cooling fan module 810. Accordingly, the air discharged from the first driving cover 817a downward (in the direction of arrow (2)) can cool the magnetron 410 while moving. As described above, the air discharged downward (in the direction of arrow (1)) from the first driving housing 817a can cool the high-voltage transformer 771 disposed at the lower portion of the second driving housing 817b while moving.

Referring to fig. 11, the second cooling fan module 850 may suck in external air (arrow (1)) in the direction of arrow. The second cooling fan module 850 may discharge air toward the lower side (the direction of arrow (2)) of the fifth electric room ES 5. The air cooled by the main control unit 700 disposed in the fifth electric chamber ES5 can be moved forward (in the direction of arrow (3)) and discharged after flowing into the second electric chamber ES 2.

In addition, the air sucked through the first cooling fan module 810 may flow into the rear (arrow (4)) of the guide rail GF. The first cooling fan module 810 may discharge air toward the lower side (the direction of arrow (5)) of the third electric chamber ES 3. The air cooled by the power supply unit 770 disposed in the third electric chamber ES3 can be moved forward (in the direction of arrow (3)) and discharged after flowing into the second electric chamber ES 2.

At this time, the air flowing into the second electric chamber ES2 through the first cooling fan module 810 and the second cooling fan module 850 moves only forward, and cannot flow into the fourth electric chamber ES4 again. This is because the air baffle 950 is disposed on the lower side of the fourth electric room ES4. As shown in fig. 6 and 11, the air baffle 950 may direct air forward.

Referring to fig. 12, a fourth electrical chamber ES4 is shown. As shown in the drawing, a waveguide 420 and a supply pipe 910 constituting the first heat source module 400 are disposed in the fourth electric room ES4. Air discharged toward the lower side (arrow (1)) of the first driving cover 817a may flow into the supply duct 910. At this time, although not shown in fig. 12, if a duct assembly 920 provided to the supply duct 910 is opened, air discharged from the first cooling fan module 810 may flow into the supply duct 910 through the duct assembly 920. Air moving forward (in the direction of arrow (3)) along the supply duct 910 may flow into the chamber S through the air inlet 123 (see fig. 7). The arrow (4) indicates the direction of movement of the air flowing into the interior of the chamber S. Arrow (2) of fig. 12 indicates a direction in which the air discharged from the first cooling fan module 810 and flowing into the second electric chamber ES2 moves along the opposite side of the air baffle 950.

Next, a method of controlling the cooking apparatus of the present embodiment will be described. First, a cooking level (cooking level) may be input through the display module 350. The cooking level may be directly input by a user or may be automatically selected by the main control part 700 based on an image of the cooking object photographed by the camera module 730 or the height of the cooking object measured by the distance sensor 710.

If the cooking level is input, the main control part 700 may select the operation modes of the first, second, and third heat source modules 400, 500, and 600, respectively, according to the input cooking level. At this time, the operation modes of the first heat source module 400, the second heat source module 500, and the third heat source module 600 may be set differently, and only a part of or all of the first heat source module 400, the second heat source module 500, and the third heat source module 600 may be operated simultaneously.

In addition, the operation mode of the first heat source module 400 may set a value obtained by multiplying the inputted cooking level of the first heat source module 400 by a preset reference time as the cooking time of the first heat source module 400. For example, if 10 is inputted as the cooking level of the first heat source module 400 when the reference time is 3 seconds, the first heat source module 400 may be operated for 10×3, i.e., 30 seconds. Here, the operation time of the first heat source module 400 may be increased by an additional time. For example, if 2 seconds are added, the first heat source module 400 may be operated for a total of 32 seconds.

In addition, the operation mode of the second heat source module 500 may adjust the driving voltage according to the inputted cooking level of the second heat source module 500. The main control part 700 may control the driving voltage of the second heat source module 500 through inverter control. The second heat source module 500 may operate a preset cooking time with a selected driving voltage. For example, if the preset cooking time is 12 seconds and the input cooking level is 10, the second heat source module 500 may be operated with a heating power of 1600W for 12 seconds.

On the other hand, the operation mode of the third heat source module 600 may set a value obtained by multiplying the inputted cooking level of the third heat source module 600 by a preset reference time as the cooking time of the third heat source module 600. For example, when the reference time is 10 seconds, if 10 is inputted as the cooking level of the third heat source module 600, the third heat source module 600 may be operated for 10×10, i.e., 100 seconds. Here, the heating power of the third heat source module 600 may be 1600W, and the operation mode may also be selected by adjusting the driving number of the heater part 610 to be driven.

As described above, in the present embodiment, the first heat source module 400 and the third heat source module 600 may select an operation mode by adjusting a cooking time, and the second heat source module 500 may select an operation mode by adjusting a driving voltage using inverter control.

At this time, the third heat source module 600 may be moved toward the bottom surface of the chamber S, and the cooking level of the third heat source module 600 may be selected by operating some or all of the plurality of heater units 610 included in the third heat source module 600 or adjusting the positions of the plurality of heater units 610.

On the other hand, the first heat source module 400 may be operated only when the third heat source module 600 is located at the first position farthest from the bottom surface of the chamber S. This is to prevent the microwave generated by the magnetron 410 from interfering with the third heat source module 600.

Fig. 47 to 52 show another embodiment of the cooking apparatus of the present invention. Fig. 47 to 52 include a fourth heat source module 1100 in addition to the aforementioned first to third heat source modules 400 to 600. The fourth heat source module 1100 is disposed on the back surface of the housing 100, 200. The power supply 1770 is disposed on the top surface of the housing 100 or 200, not on the back surface of the housing 100 or 200. The same reference numerals are given to the same structures as those of the foregoing embodiments, and detailed description thereof is omitted, and description is given to the structures different from those of the foregoing embodiments.

Referring to fig. 47 and 48, it can be seen that the power supply portion 1770 is disposed above the heat insulating top plate 270. The power supply portion 1770 includes a high voltage transformer 1771, but the high voltage transformer 1771 is bulky and generates high temperature. Thus, it is important to efficiently cool the high voltage transformer 1771.

For reference, the outer back plate 220 is shown in fig. 47, but the outer back plate 220 is omitted in fig. 48. In fig. 47, the fourth heat source module 1100 may be disposed at a third electric room ES3 formed between the outer rear plate 220 and the heat insulation rear plate 280. Referring to fig. 48, a case where the fourth heat source module 1100 is provided to the heat insulation rear plate 280 disposed in front of the outer rear plate 220 is illustrated. The fourth heat source module 1100 may be a convection heater. That is, the fourth heat source module 1100 may provide heat for convectively heating the cooking object inside the cavity S.

As described above, in the present embodiment, the first heat source module 400, the second heat source module 500, the third heat source module 600, and the fourth heat source module 1100 may be disposed in different electrical chambers of the housings 100, 200, respectively. In other words, the first heat source module 400, the second heat source module 500, the third heat source module 600, and the fourth heat source module 1100 may be arranged on different surfaces of the cases 100 and 200. In addition, the plurality of heat sources may constitute heat sources of different kinds from each other. Thus, the plurality of heat sources can provide heating means of different kinds from each other toward the cooking object from different directions from each other.

The fourth heat source module 1100 may be a convection (convection) heater. The fourth heat source module 1100 may generate convection heat toward the inside of the cavity S together with the convection fan to play a role of improving cooking uniformity. In contrast, a convection fan may be omitted in the fourth heat source module 1100, and radiant heat may be provided to the cooking item using a hot wire as in the third heat source module 600.

Referring to fig. 48, the fourth heat source module 1100 may include a convection enclosure 1110. The convection housing 1110 may be disposed on the heat insulation back plate 280, a convection chamber may be formed inside the convection housing 1110, and a convection heater (not shown) may be disposed in the convection chamber. The convection heater may be formed in a rod type having a prescribed length and diameter. For example, the convection heater may be a sheath heater (life heater) having a metal as a protective tube for a hot wire. In contrast, the convection heater may be a carbon heater, a ceramic heater, or a halogen heater in which a filament is enclosed in a tube made of a transparent or translucent material.

A motor bracket 1130 may be disposed in the convection housing 1110, and a convection motor 1120 may be mounted in the motor bracket 1130. The convection motor 1120 may rotate a convection fan (not shown) inside the convection housing 1110. When the convection fan is rotated by the convection motor 1120, heat of the convection heater may heat the cooking while being convected inside the cavity S. Reference numeral 1150 denotes a discharge portion that discharges heat inside the convection chamber to the outside.

If the fourth heat source module 1100 is inputted to act, power is applied to the convection motor 1120 such that the convection fan rotates, and power is applied to the convection heater such that the convection heater heats. Therefore, forced convection is formed between the cavity S and the convection chamber inside the convection housing 1110 by the convection fan, and the forced convection formed by the convection fan is heated from the convection heater to become hot air, so that the temperature inside the cavity S rises, and thus the cooking object can be heated.

Although not shown, a convection supply portion through which the hot air of the convection heater is discharged into the cavity S may be opened in the inner rear plate 120 of the inner case 100. In addition, a separate convection discharging part (not shown) distinguished from the convection supplying part may be opened in the inner rear plate 120. The hot air of the convection heater may circulate inside the cavity S after being discharged to the convection supply part, and may be discharged again to the convection chamber through the convection discharge part.

On the other hand, in the present embodiment, the power supply portion 1770 may be disposed in the second electric chamber ES2 that is the upper portion of the housing 100, 200. More precisely, the power supply 1770 may be disposed on the heat insulating top plate 270. Since the fourth heat source module 1100 is disposed in the third electric chamber ES3, the power supply unit 1770 may be disposed in the second electric chamber ES2 to prevent overheating due to the fourth heat source module 1100. Referring to fig. 48 and 49, the power supply portion 1770 may include a high voltage transformer 1771, a high voltage capacitor 773, and a fuse 1775.

At this time, the power supply portion 1770 may be disposed between the first cooling fan module 1810 and the second cooling fan module 1850. Referring to fig. 49, a first cooling fan module 1810 is disposed on the left side of the power supply unit 1770, and a second cooling fan module 1850 is disposed on the right lower side. Thus, a part of the outside air sucked by the first cooling fan module 1810 can move in the first cooling fan module 1810 direction (arrow (1)) between the heater cover of the third heat source module 600 and the left end portions of the cases 100 and 200, and another part can move in the rear direction (arrow (2)) of the cases 100 and 200 along the space between the heater cover of the third heat source module 600 and the guide rail GF.

Since the power supply unit 1770 is disposed on a path along which air is drawn in the direction of the first cooling fan module 1810, the air drawn in by the first cooling fan module 1810 passes through the power supply unit 1770 (in the direction of arrow (3)). Therefore, the power supply portion 1770 can be cooled.

Since the power supply unit 1770 is disposed on the heat insulating ceiling 270, the high temperature inside the chamber S is not directly transmitted to the power supply unit 1770 through the inner ceiling 160. The power supply portion 1770 is disposed on a different surface from the magnetron 410 of the first heat source module 400 disposed in the third electric chamber ES3, and is spaced apart from the magnetron 410; (ii) The power supply 1770 is further spaced apart from the second heat source module 500 disposed at the bottom of the cases 100 and 200; (iii) The power supply 1770 and the heater 610 of the third heat source module 600 are separated by the heater housing 632; (iv) The power supply 1770 is also spaced apart from the fourth heat source module 1100 disposed in the third electric chamber ES 3. Therefore, the power supply 1770 can be prevented from overheating by the heat source. In particular, since the main control unit 700 as another heat generator is disposed in the fifth electric chamber ES5, the heat generated from the main control unit 700 does not directly affect the power supply unit 1770.

In the present embodiment, a first cooling fan module 1810 and a second cooling fan module 1850 are included for cooling. The first cooling fan module 1810 and the second cooling fan module 1850 are both used to cool cooking equipment. The first cooling fan module 1810 may also function to flow air into the cavity S.

Fig. 47 shows the first cooling fan module 1810. The first cooling fan module 1810 may be disposed on the insulating top plate 270. The first cooling fan module 1810 includes a first fan housing 1817. A first fan motor 1820 may be provided at one side of the first fan housing 1817. A rotation shaft (not shown) is connected to the first fan motor 1820, and the rotation shaft is coupled to the first fan blade 1825.

The first fan blade 1825 may discharge air downward, i.e., in the direction of gravity. Referring to fig. 50, air is discharged downward from the first cooling fan module 1810. The discharged air may be discharged to the third electric chamber ES3. Since the magnetrons 410 of the fourth heat source module 1100 and the first heat source module 400 are disposed at the third electric room ES3, they can be cooled by the first cooling fan module 1810.

The air discharged from the first cooling fan module 1810 may move downward through the third electric chamber ES3 and flow into the second electric chamber ES2. Further, as shown in fig. 50 and 51, a part of the air discharged from the first cooling fan module 1810 may move forward along the supply duct 910, i.e., in the door 300 direction (arrow (3) direction of fig. 51), and may be directed to the inner direction of the chamber S (arrow (4)).

Referring back to fig. 47, a second cooling fan module 1850 is shown. As with the first cooling fan module 1810, the second cooling fan module 1850 may cool the cooking apparatus and may smoothly supply external air to the inside of the cavity S. Looking at the structure of the second cooling fan module 1850, the second cooling fan module 1850 may include second fan housings 1857a, 1857b forming a skeleton, and a second fan motor 1860 disposed at one side of the second fan housings 1857a, 1857b.

The second fan housing 1857a, 1857b may include a first driving housing 1857a and a second driving housing 1857b disposed at both sides, respectively. A second fan motor 1860 may be disposed between the first and second drive housing 1857a, 1857b. A rotary shaft (not shown) is connected to the second fan motor 1860, and a pair of second fan blades 1865a and 1865b are coupled to the rotary shaft. The rotation shaft may extend from the second fan motor 1860 toward both sides, and a pair of second fan blades 1865a, 1865b may be coupled to both sides of the rotation shaft, respectively.

At this time, the pair of second fan blades 1865a, 1865b are disposed inside the first driving housing 1857a and the second driving housing 1857b, respectively. Further, one second fan blade 1865a of the pair of second fan blades 1865a, 1865b may discharge air in the gravitational direction, and the other second fan blade 1865b may discharge air in a direction orthogonal to the gravitational direction, that is, in the first electric chamber ES1 direction. Referring to fig. 52, since the first driving housing 1857a is opened downward, the second fan blades 1865a provided in the first driving housing 1857a can discharge air downward (in the direction of arrow (2)). Thereby, the main control unit 700 disposed in the fifth electric chamber ES5 can be cooled.

On the other hand, referring to fig. 48, the outlet 1857b' of the second driving cover 1857b is opened to the side, i.e., the first electric chamber ES 1. Accordingly, the second fan blades 1865b disposed on the second driving cover 1857b can discharge air toward the first electric chamber ES1, more precisely, toward the power supply 1770 through the outlet 1857b' of the second driving cover 1857 b. Thereby, the second cooling fan module 1850 may cool the power supply part 1770.

The air cooling the power supply 1770 can move downward. Referring to fig. 52, air may flow into the second driving cover 1857b in the inner direction (arrow (4)) and then move toward the third electric chamber ES3 (arrow (6)) through the power supply portion 1770. In addition, the fourth heat source module 1100 is cooled in this process.

Fig. 49 to 52 show an air circulation structure inside the cooking apparatus of the present embodiment. Since the first, second, third, and fourth heat source modules 400, 500, 600, and 1100 are provided in the cooking apparatus of the present embodiment, it is necessary to efficiently cool heat generated in these heat sources. The cooling structure of such a heat source and other components will be described below.

First, the part to be cooled in this embodiment is observed: (i) In the first electric room ES1, the lighting device 790, the distance sensor 710, the third heat source module 600, the third temperature sensor (not shown), and the power supply 1770 need to be cooled; (ii) In the second electric room ES2, the second heat source module 500 needs cooling; (iii) In the third electric room ES3, the fourth heat source module 1100 and the camera module 730 need cooling; (iv) In the fifth electric room ES5, the main control unit 700, the humidity sensing module 750, the second temperature sensor 760, and a temperature cut-off switch (not shown) need to be cooled.

Further, in order to cool them, in the present embodiment, the aforementioned first cooling fan module 1810 and second cooling fan module 1850 are provided. The first cooling fan module 1810 may cool the second and third electric cells ES2 and ES3, and the second cooling fan module 1850 may cool the first, second, and fifth electric cells ES1, ES2, and ES5. Of course, since the first cooling fan module 1810 is also disposed at the upper portion of the cases 100 and 200, a part of the first electric chamber ES1 can be cooled. In addition, since the first cooling fan module 1810 discharges air in the direction of the duct unit 920 disposed in the third electric chamber ES3, the first cooling fan module 1810 may also function to supply air into the chamber S.

Specifically, as shown in fig. 47, in the present embodiment, both the air suction portion 242 that sucks in the outside air and the air discharge portion 243 that re-discharges the air are arranged on the front surface of the cooking apparatus. The external air may flow in from the upper front side of the cooking apparatus and may be discharged again from the lower front side after being circulated inside the cooking apparatus. Therefore, even if the cooking apparatus of the present embodiment is provided in an embedded manner, smooth air circulation can be achieved.

In addition, as shown in fig. 47 and 48, a plurality of electric chambers are provided at the outer side of the inner case 100 of the present embodiment, and air can efficiently cool the components while flowing in the electric chambers. At this time, the air baffle 950 can prevent the air flowing into the second electric chamber ES2 from moving upward again through the fourth electric chamber ES4, and as a result, the air can move forward and be discharged from the air discharge portion 243 after cooling the second heat source module 500 of the second electric chamber ES 2.

In the present embodiment, the heat insulating top plate 270 and the heat insulating rear plate 280 are disposed outside the inner case 100, respectively, so that heat in the chamber S can be prevented from being directly transferred to the components. It can be considered that the heat insulation top plate 270 and the heat insulation rear plate 280 perform a cooling function of the cooking apparatus together with the first and second cooling fan modules 1810 and 1850.

As shown in fig. 47, the first cooling fan module 1810 is disposed on the heat insulating top plate 270, more precisely, at a position offset from the center of the heat insulating top plate 270 toward the third electric chamber ES3 and the fourth electric chamber ES4 (left side in the drawing). The second cooling fan module 1850 is also disposed on the heat insulating top plate 270, more precisely, at a position offset from the center of the heat insulating top plate 270 toward the fifth electric chamber ES 5.

Referring to fig. 49, the flow of air drawn through the first cooling fan module 1810 and the second cooling fan module 1850 is shown. Air drawn through the outer front panel 240 flows into the first cooling fan module 1810. At this time, air may flow into the first cooling fan module 1810 in two streams. At this time, the air flowing in from the left side (the arrow (1) direction) of the first cooling fan module 1810 may move along the heater cover 632 of the third heat source module 600 and the outer top plate 230 (omitted in fig. 49) disposed at the left side edge of the housing 100, 200. In addition, air flowing in from the right side (arrow (2)) of the first cooling fan module 1810 may move along between the heater housing 632 of the third heat source module 600 and the guide rail GF.

As described above, the air may cool the distance sensor 710, the lighting device 790, and the third heat source module 600 during the suction to the first cooling fan module 1810. The power supply 1770 disposed in the air flow path may be cooled. Arrow (3) indicates the direction of air drawn toward the first cooling fan module 1810 through the power supply portion 1770. Thereby, the power supply portion 1770 may be cooled by the first cooling fan module 1810.

Meanwhile, the second cooling fan module 1850 may also suck external air through the outer front plate 240. The air flowing in the direction of the second cooling fan module 1850 (the direction of arrow (4)) may cool the first electric room ES1 while moving in the direction of the second cooling fan module 1850. At this time, two air may be sucked toward the first driving housing 1857a and the second driving housing 1857b included in the second cooling fan module 1850. The air sucked in the direction of the first driving cover 1857a can flow in through the air suction portion 242 of the outer front plate 240, and can cool the front of the first electric room ES1 near the door 300.

In addition, the air sucked through the first cooling fan module 1810 and the second cooling fan module 1850 moves toward the lower side of the cooking apparatus. Referring to fig. 50, the air sucked by the first cooling fan module 1810 is discharged downward, i.e., in the direction of the third electric chamber ES3 (in the direction of arrow (1)). In this process, the magnetron 410 of the first heat source module 400 may be cooled. Since the magnetron 410 constituting the first heat source module 400 is disposed at the lower portion of the first cooling fan module 1810, air discharged from the first cooling fan module 1810 toward the lower side (arrow (1)) can cool the magnetron 410 while moving. In addition, the air passing through the third electric room ES3 flows into the second electric room ES2 through the ventilation part 283 formed at the lower part of the heat insulation rear plate 280.

On the other hand, referring to fig. 52, the air sucked into the first driving cover 1857a of the second cooling fan module 1850 may be discharged downward, that is, in the direction of the fifth electric chamber ES5 (in the direction of arrow (4)). In this process, the main control part 700, the humidity sensing module 750 disposed at the exhaust pipe 940, and the second temperature sensor 760 may be cooled. In particular, since the main control part 700 generating high heat is disposed at the lower side of the first driving housing 1857a, the main control part 700 can be effectively cooled.

Next, the air passing through the fifth electric room ES5 flows into the second electric room ES2, and the air cooled in the second electric room ES2 by the second heat source module 500 can be discharged to the outside (in the direction of arrow (3)) through the air discharge portion 243.

On the other hand, the air sucked into the second driving housing 1857b of the second cooling fan module 1850 may be discharged in a horizontal direction instead of the gravity direction. More precisely, as shown in fig. 50, the air sucked into the second driving cover 1857b can be discharged toward the first electric chamber ES1, that is, toward the power supply 1770 through the outlet 1857b' (see fig. 48) of the second driving cover 1857 b. Thereby, the second cooling fan module 1850 may cool the power supply part 1770.

The air cooling the power supply 1770 can move downward. As shown in fig. 50, the air discharged from the second driving cover 1857b may be discharged in the direction of the power supply 1770 and then may move toward the third electric chamber ES3 (arrow (2)) which is the lower side. Further, in this process, the fourth heat source module 1100 may be cooled. The air passing through the fourth heat source module 1100 may finally flow into the second electric room ES2, move forward, and be discharged from the air discharge portion 243.

In fig. 52, air may also be transferred through the exhaust duct 940 in the direction of the second electric chamber ES2. The exhaust duct 940 may be transferred to the second electric chamber ES2 by guiding the air discharged from the chamber S toward the lower side (arrow (5) direction). In addition, the air discharged from the chamber S in this way can also be discharged to the outside (in the direction of arrow (3)) through the air discharge portion 243.

At this time, the air flowing into the second electric chamber ES2 through the first cooling fan module 1810 and the second cooling fan module 1850 moves only forward, and cannot flow into the fourth electric chamber ES4 again. This is because the air baffle 950 is disposed on the lower side of the fourth electric room ES4. As shown in fig. 52, the air baffle 950 may direct air forward.

Referring to fig. 51, a fourth electrical chamber ES4 is shown. As shown in the drawing, a waveguide 420 and a supply pipe 910 constituting the first heat source module 400 are disposed in the fourth electric room ES4. Air discharged toward the underside (arrow (1)) of the first cooling fan module 1810 may flow into the supply duct 910. At this time, although not shown in fig. 51, if the duct assembly 920 provided to the supply duct 910 is opened, the air discharged from the first cooling fan module 1810 may flow into the supply duct 910 through the duct assembly 920. Air moving forward (in the direction of arrow (3)) along the supply duct 910 can flow into the chamber S through the air inlet 123 (see fig. 47). The arrow (4) indicates the direction of movement of the air flowing into the interior of the chamber S. Arrow (2) of fig. 51 indicates a direction in which air discharged from the first cooling fan module 1810 and flowing into the second electric chamber ES2 moves along the opposite side of the air baffle 950.

By such air flow, the first to fourth heat source modules 400 to 1100, the power supply portion 1770, the magnetron 410, the main control portion 700, and the like can be cooled. In addition, the flow path of the present embodiment guides air in a predetermined direction while preventing reverse flow of air, and smooth cooling can be achieved. In particular, in the present embodiment, even without an additional tube (tube) form structure, the flow of air can be generated by using the space between the components.

The above description is merely illustrative of the technical idea of the present invention, and various modifications and variations can be made thereto by those skilled in the art to which the present invention pertains without departing from the essential characteristics thereof. Accordingly, the disclosed embodiments of the present invention are not intended to limit the technical idea of the present invention, but rather to illustrate that the scope of the technical idea of the present invention is not limited by these embodiments. The scope of the present invention should be construed by the appended claims and should be construed as all technical ideas within the scope equivalent thereto.

Description of the reference numerals

100: inner shell 110: inner side plate

120: inner rear plate 123: suction port

125: exhaust port 128: camera mounting part

160: inner top plate 165: lighting installation part

200: the housing 210: outer side plate

220: outer back plate 230: outer top plate

240: outer front plate 242: air suction part

243: the air discharge portion 250: outer bottom plate

270: thermal insulation top plate 273: lighting through part

274: sensor mounting portion 280: heat insulation back plate

300: door 350: display module

400: the first heat source module 410: magnetron with a magnetron body having a plurality of magnetron electrodes

420: waveguide 500: second heat source module

510: base plate 520: support member

530: mounting bracket 540: shielding filter

550: coil assembly 560: coil base

570: work coil 580: cover plate

600: third heat source module 610: heater unit

630: the movement component 632: heater cover

640: fixed assemblies 651, 652: front connecting rod

653. 654: rear link 700: main control part

710: distance sensor 711: sensor cover

720: distance sensing unit 730: camera module

731: camera cover 740: camera substrate

745: camera sensor 750: humidity sensing module

760: second temperature sensor 770: power supply unit

771: high voltage transformer 810: first cooling fan module

817a: first drive casing 817b: second driving cover body

850: the second cooling fan module 852: second fan shell

910: supply conduit 920: pipeline assembly

940: exhaust duct 950: air baffle

S: cavity body

Claims

1. A cooking device, comprising:

A shell body having a cavity formed therein;

A door, disposed on the housing, for opening and closing the cavity;

A first heat source module radiates microwaves toward the cavity;

A second heat source module radiates a magnetic field toward the cavity; and

a third heat source module, generating radiant heat to the cavity;

The first heat source module is arranged on the side of the shell;

The second heat source module is arranged on the bottom surface of the shell;

The third heat source module is arranged on the upper portion of the shell.

2. The cooking device according to claim 1, wherein:

The second heat source module and the third heat source module are respectively arranged in the housing so as to face each other across the cavity.

3. The cooking device according to claim 1, wherein:

A main control unit is provided in the housing;

The main control unit is arranged on a second side surface of the casing, and the second side surface is formed on a side opposite to a first side surface of the casing on which the first heat source module is arranged.

4. The cooking device according to claim 1, wherein:

A power supply unit is arranged between an inner rear plate of an inner shell and an outer rear plate of an outer shell constituting the housing; or,

A heat-insulating rear plate is arranged between the inner rear plate and the outer rear plate, and the power supply unit is arranged on the heat-insulating rear plate.

5. The cooking device according to claim 1, wherein:

The third heat source module comprises:

A fixing assembly fixed to the housing; and

The moving component has a heater portion disposed therein, and when the moving component moves relative to the fixed component, the distance between the moving component and the bottom surface of the cavity changes.

6. The cooking device according to claim 5, wherein:

The fixed component and the movable component are connected by a connecting rod component;

During the rotation of the connecting rod assembly, the moving assembly moves linearly.

7. The cooking device according to claim 5, wherein:

The fixing assembly is fixed to a heat-insulating top plate disposed on the upper portion of an inner shell constituting the housing;

The moving assembly moves inside the cavity through the moving opening of the heat-insulating top plate.

8. The cooking device according to claim 1, wherein:

A distance sensor is arranged on the housing toward the center of the cavity;

The distance sensor is arranged at a front portion of the heat-insulating top plate which is combined with an outer front plate of the housing.

9. The cooking device according to claim 1, wherein:

The housing comprises:

an inner shell, forming the cavity; and

An outer shell, arranged on the outer side of the inner shell;

The first heat source module and the second heat source module are respectively disposed between the inner shell and the outer shell;

The third heat source module is exposed to the cavity through a top plate opening formed in an inner top plate of the inner shell.

10. The cooking device according to claim 9, wherein:

In the inner shell, an air intake port and an air exhaust port opened toward the cavity are respectively formed on different surfaces of the inner shell;

A supply pipe covering the air intake port is provided between the inner shell and the outer shell;

One end of the supply pipe covers the air inlet, and the other end of the supply pipe is provided with a pipe assembly for opening and closing the other end of the supply pipe;

The duct assembly is arranged at a lower portion of a cooling fan module arranged at an upper portion of the inner shell.

11. The cooking device according to claim 10, wherein:

The supply pipe is disposed on an inner plate of the inner case where a waveguide constituting the first heat source module is disposed, and the supply pipe is disposed at a height different from that of the waveguide.

12. The cooking device according to claim 9, wherein:

An exhaust duct covering the exhaust port is arranged in the inner shell;

One end of the exhaust duct covers the exhaust port, and the other end is open between the inner shell and the outer shell;

The exhaust duct is arranged on an inner side plate of the inner casing where a main control unit is arranged, and the exhaust duct is arranged at a position farther from the door than the main control unit.

13. The cooking device according to claim 9, wherein:

A lighting device is disposed on the inner top plate of the inner shell in a manner facing the cavity; or,

A camera module for photographing the interior of the cavity is arranged between the inner shell and the outer shell.

14. The cooking device according to claim 9, wherein:

A heat-insulating top plate is combined with the top plate of the inner shell, and a cooling fan module is arranged on the heat-insulating top plate;

A fan through portion is formed at a portion of the heat insulation top plate that protrudes rearward of the inner shell, and the cooling fan module is arranged on an upper portion of the fan through portion.

15. The cooking device according to claim 1, wherein

With the third heat source module as the center, a plurality of cooling fan modules are arranged around the third heat source module;

Any one of the plurality of cooling fan modules is arranged in a direction perpendicular to the other cooling fan modules.

16. The cooking device according to claim 9, wherein:

An air intake portion is formed at the upper portion of the housing and is open to a first electrical room where the third heat source module is arranged, and an air discharge portion is formed at the lower portion of the housing and is open to a second electrical room where the lower portion of the second heat source module is arranged;

A shielding frame is disposed behind the air intake portion, and a slit having a size smaller than that of the air intake portion is formed in the shielding frame.

17. A method for controlling a cooking device, wherein:

The cooking device comprises:

A shell body having a cavity formed therein;

The first heat source module, the second heat source module, and the third heat source module are respectively arranged on different surfaces of the housing; and

A main control unit is disposed in the housing and controls the operations of the first heat source module, the second heat source module, and the third heat source module;

The control method comprises:

Steps for entering cooking levels; and

The main control unit selects operation modes of the first heat source module, the second heat source module, and the third heat source module, respectively, according to the input cooking level.

18. The control method of a cooking device according to claim 17, wherein:

The first heat source module, the second heat source module and the third heat source module operate simultaneously or sequentially.

19. The control method of a cooking device according to claim 17, wherein:

The first heat source module is disposed on the side of the shell and radiates microwaves toward the cavity;

The second heat source module is disposed on the bottom surface of the shell and radiates a magnetic field toward the cavity;

The third heat source module is disposed on an upper portion of the housing and generates radiant heat toward the cavity.

20. The control method of a cooking device according to claim 17, wherein:

The action modes include:

The first heat source module operation mode is to set the value obtained by multiplying the input cooking level of the first heat source module by the preset reference time as the cooking time of the first heat source module;

a second heat source module operation mode, selecting a heating power of the second heat source module during a preset cooking time according to an input cooking level of the second heat source module; and

The third heat source module operation mode is to set the value obtained by multiplying the input cooking level of the third heat source module by the preset reference time as the cooking time of the third heat source module;

The third heat source module moves toward the bottom surface of the cavity, and an operation mode of the third heat source module is selected by operating a part or all of the plurality of heater parts included in the third heat source module or adjusting the positions of the plurality of heater parts;

The first heat source module operates only when the third heat source module is located at the first position farthest from the bottom surface of the cavity.