JP2010198840A - Induction heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique that an induction heating coil and control sections for controlling current conduction of a radiation type heater are stored in an electrical box in an induction heating cooker, wherein a grille is arranged at one side and the electrical box is arranged at the other side viewed from the front face of a body section of the induction heating cooker, having either of a plurality of induction heating coils only and one or two induction heating coils and one radiation type heater, and cooling of the control section, cooling of the induction heating coil and its peripheral member, and cooling of the radiation type heater and its peripheral member are effectively performed by a single fan integrated with the electric box. <P>SOLUTION: The electric box is obtained in a three-layer laminated form wherein the control section for current-conduction control of the induction heating coil having a small calorific value and the control section for current-conduction control of two induction heating coils having a large calorific value are respectively stored in separate housing sections, and an air passage. An air flow formed from the single fan integrated with the electric box is discharged below the induction heating coil having a large calorific value and the induction heating coil having a small calorific value via respective three-layer laminated housing sections. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to an induction heating cooker in which an electric box is equipped with a control unit related to energization control for an induction heating coil disposed below a top plate, and in particular, induction heating that provides a good cooling effect by improving the electric box. It relates to a cooker.

A top plate 2 made of heat-resistant glass is provided on the upper surface of the main body case 1 incorporated in the system kitchen by a drop-in method, and induction heating coils 3 and 3 are arranged on the inner upper and lower sides below the top plate 2, and these induction heating coils. 3 and 3, a radiator heater 4 is arranged, a roasting roaster case 6 for fish grilling is housed and arranged in the lower left side of the main body case 1, a cooling fan 10 is arranged in the rear of the inner right side of the main body case 1, and this A substrate case 11 is arranged in front of the cooling fan 10, and some of the substrate cases 11 contain a control board constituted by a microcomputer, an inverter circuit, and the like. (See Patent Document 1).

JP 2003-208969A

The thing of this patent document 1 is comprised so that the cold wind from the cooling fan 10 may be supplied to the bottom face of the roaster case 6 from the ventilation hole of the heat-shielding board arrange | positioned in the side face of the roaster case 6 through the board | substrate case 11. . In this case, the cooling fan 10 is located at the rear right side inside the main body case 1.
Since the mounting is separate from the substrate case 11, the cooling fan 1 is provided inside the main body case 1.
The trouble of separately performing the zero attachment work and the attachment work of the substrate case 11 and the trouble of joining the air passage from the cooling fan 10 to the substrate case 11 are also complicated.

Further, in this patent document 1, an inverter unit and a control board are housed in a board case 13, but a control board and an inverter circuit for the induction heating coils 2 and 2, and a control for the radial heater 4. There is no disclosure of the technology about the storage form of the board, inverter circuit, etc., and the disclosure of the technology about the storage form for improving the cooling effect of the control board, inverter circuit, etc. and serviceability such as repair and inspection Absent.

An induction heating cooker generally includes one or more induction heating coils, or one or more induction heating coils and radiation for the convenience of cooking. Some are equipped with a type heater (also called a radiant heater).

The present invention is an embodiment in which the grill is disposed on one side and the electrical box is disposed on the other side when viewed from the front of the main body of the induction heating cooker, and the induction heating cooker includes only a plurality of induction heating coils, In any of those equipped with one or two induction heating coils and one radiant heater (also referred to as a radiant heater), a control unit for controlling the energization of the induction heating coil and the radiant heater is accommodated in the electrical box, Provided technology that enables the cooling of the control unit, the induction heating coil and its peripheral members, and the radiation heater and its peripheral members to be effectively performed by a single fan integrated in the electrical box. To do.

In addition, the present invention provides an induction heating including a top plate on an upper surface of the main body, and an electric box that houses a plurality of induction heating coils and a control unit related to energization control of the induction heating coils in the main body. In the cooking device, the air blower fan for cooling the control unit, the induction heating coil and its peripheral members is integrated with the electrical box, and the cooling fan 10 to be performed separately as in Patent Document 1 is used. This eliminates the complexity of the mounting work and the mounting work of the substrate case 11 and the complexity of the seal coupling work of the air passage.

The present invention further includes a top plate on the upper surface of the main body, and a plurality of induction heating coils in the main body of the induction heating cooker corresponding to the top plate, and control of energization to these induction heating coils. In an embodiment comprising an electrical box that houses the control unit, the grill is disposed on one side when viewed from the front surface of the main body of the induction heating cooker, and the electrical box is disposed on the other side. A ventilation duct portion disposed in a space between the top and the grille is provided integrally with the electrical box so as to effectively utilize the space between the top plate and the grill and to cool the control portion related to energization control to each induction heating coil It is an object of the present invention to provide an induction heating cooker having a novel electric box configuration that can improve the effect and improve serviceability such as repair and inspection of these control units.

An induction heating cooker according to a first aspect of the present invention includes a top plate on an upper surface of a main body, and an induction heating coil is provided inside the main body corresponding to the top plate, and a grill is provided on one side when viewed from the front. An induction heating cooker in which an electrical box is disposed on the other side and a control unit related to energization control to the induction heating coil is accommodated in the electrical box, wherein the electrical box is a housing unit that houses the control unit A fan attached to the rear part of the housing part for blowing air and a space between the top plate and the grill so as to discharge the air flowing in the housing part from the lower side to the induction heating coil The air that has cooled the control unit is discharged from the rear part through the space below the top plate while cooling the induction heating coil and its peripheral members while cooling the control unit. Ru A.

An induction heating cooker according to a second aspect of the present invention includes a top plate on the upper surface of the main body, and an induction heating coil corresponding to the top plate, the induction heating coil having a large and small amount of heat generation is provided in the main body and viewed from the front. In the induction heating cooker in which a grill is arranged on one side and an electric box that houses a control unit related to energization control to the induction heating coil is arranged on the other side, the electric box has an induction heating that generates a large amount of heat. A housing portion for housing a control unit for controlling energization of the coil, and a space between the top plate and the grill so that the air flowing through the housing portion is discharged from the lower side to the induction heating coil having a large calorific value. A ventilation duct portion disposed immediately below the induction heating coil having a large calorific value in the space, and a control unit related to energization control to the induction heating coil stacked on the accommodating portion and having a small calorific value. A storage section and each of the storage sections A single fan that discharges and discharges air, and the electrical box controls the energization control to the induction heating coil having a large calorific value so that the air discharged from the fan flows separately A first induction heating coil side air passage that cools the induction heating coil that has a large amount of heat generation and cools the periphery thereof by flowing through a housing portion that houses the portion and discharging from the air duct, and induction heating with a small amount of heat generation 2nd induction which flows through the accommodating part which accommodates the control part which concerns on the energization control to a coil, and discharges from the lower side of the induction heating coil with the said small calorific value, and cools the induction heating coil with said small calorific value and its peripheral part The heating coil side air passage is formed, and the air passing through both the air passages is discharged from the rear portion through the space below the top plate.

An induction heating cooker according to a third aspect of the present invention comprises a top plate on the top surface of the main body, and the left and right induction heating coils are arranged in the main body corresponding to the top plate. The induction heating coil is provided with an induction heating coil with a small calorific value disposed at the center back side of the induction heating coil, a grill is disposed on one side when viewed from the front surface, and an electrical box is disposed on the other side. In the induction heating cooker in which the control unit related to the energization control is accommodated in the electrical box, the electrical box is a first that accommodates the first control unit related to the energization control to one of the left and right induction heating coils. On the housing part, on the second housing part, a second housing part that houses the second control part that is stacked on the first housing part and controls the energization of the other induction heating coil in the left-right arrangement, and on the second housing part Laminate induction heating with low heat generation A third housing portion for housing a third control unit for controlling energization of the air, and the top plate and the top plate so as to discharge the air flowing through the first housing portion from the lower side to the left and right induction heating coils. A blower duct portion disposed in the left-right direction at a position directly below the left and right induction heating coils in a space between the grille, and a single fan for diverting air to the first housing portion and the second housing portion. The electrical box flows through the first housing part and discharges from the air duct part so that the air discharged from the fan flows in a diverted manner, and the left and right induction heating coils and the peripheral part are provided. A first air passage to be cooled, an induction heating coil that flows through the third housing portion from the second housing portion and is discharged from the lower side of the induction heating coil having a small heat generation amount, and the peripheral portion Forming a second air passage for cooling, and First air passage and the second
Air passing through the air passage is exhausted from the rear through the space below the top plate.

According to the present invention, in an induction heating cooker in which a grill is disposed on one side and an electrical box is disposed on the other side when viewed from the front inside the main body, a control unit for controlling energization of the induction heating coil is accommodated in the electrical box. In this case, the cooling of the control unit and the cooling of the induction heating coil and its peripheral members can be satisfactorily performed by a single fan.

In addition, an air duct portion disposed in the space between the top plate and the grill is provided integrally with the electrical box, and this air duct portion is disposed in the space between the top plate and the grill so that this It is possible to effectively use the space and improve the cooling effect of the control unit related to the energization control to each induction heating coil. And it has a novel electric equipment box form which can aim at improvement in serviceability, such as repair and inspection of a control part which controls energization of an induction heating coil.

It is the front perspective view which showed the inside by the partial fracture of the induction heating cooking appliance concerning the present invention. It is a longitudinal cross-sectional view of the heating status indicator HP and the induction heating coil portion of the induction heating cooker according to the present invention. It is a perspective view which shows the relationship between the arc-shaped light guide based on this invention, and a light source. It is a block diagram which shows the electric control part of the induction heating cooking appliance which concerns on this invention. It is a disassembled perspective view of the electrical equipment box of the induction heating cooking appliance which concerns on this invention. It is a front perspective view of the assembled state of the electrical box according to the present invention. It is a perspective view of the fan concerning the present invention. It is a vertical side view explaining the internal structure of the electrical equipment box which concerns on this invention.

In the present invention, a top plate is provided on the upper surface of the main body, and an induction heating coil is provided inside the main body below the top plate corresponding to the top plate, and a grill is disposed on one side when viewed from the front. In the induction heating cooker in which an electrical box is disposed on the other side and a control unit related to energization control to the induction heating coil is housed in the electrical box, the electrical box is directed to a housing unit that houses the control unit. A fan attached to the rear part of the housing part for blowing air, and a fan arranged in a space between the top plate and the grill so as to discharge air flowing in the housing part from the lower side to the induction heating coil. A duct part, and the air that has cooled the control part is discharged from the rear part through the space below the top plate while cooling the induction heating coil and peripheral members by discharging from the air duct part Na Providing an induction heating cooker instrumentation box configuration.

In addition, the induction heating coil is an induction heating coil having a different calorific value, and a control unit related to energization control to the induction heating coil having a large calorific value and a control unit related to energization control to the induction heating coil having a small calorific value are provided. By adopting a form to be accommodated in the electrical box, and by providing a cooling fan and a duct for blowing air for cooling each induction heating coil and its peripheral members integrally with this electrical box, by a single fan, Along with the cooling of each control unit, a novel configuration is provided that effectively cools each induction heating coil and its surrounding members by blowing air to each blowing passage.

Furthermore, in the present invention, an induction heating cooker having two induction heating coils with a large calorific value and one induction heating coil with a small calorific value, and a control unit for controlling energization to the induction heating coil with a large calorific value, The control unit for controlling the energization of the induction heating coil with a small calorific value is configured to be distributed and housed in each housing part of the electrical box, and the cooling fan, each induction heating coil, and By providing a duct for blowing air for cooling the peripheral members, a novel configuration for effectively blowing and cooling the induction heating coils and the peripheral members together with the cooling of each control unit by a single fan And

Hereinafter, as an example of the present invention, an embodiment of a typical induction heating cooker including two induction heating coils having a large calorific value and one induction heating coil having a small calorific value will be described in detail with reference to the accompanying drawings. Explained.
FIG. 1 is a perspective view showing an external configuration of an induction heating cooker 1 according to the first embodiment of the present invention. An induction heating cooker 1 shown in the figure is a cooker that is installed in a drop-in manner in a system kitchen or the like, and has a main body 2 housed in a substantially rectangular case, and an upper surface of the main body 2. A heat-resistant glass top plate 3 is provided, and a pair of left and right heat sources are provided in the main body 2 as heat sources that are installed on the near side (front side) of the top plate 3 with a space in the lower space corresponding to the top plate 3. The first induction heating coil 4 and the second induction heating coil 5 having a large calorific value, and a small calorific value arranged at a distance from the induction heating coils 4 and 5 at the center rear side (rear side) thereof. Third induction heating coil 6
It has. On the top plate 3 corresponding to the induction heating coils 4, 5, and 6, circular cooking container placement portions 8, 8, and 9 are printed to clearly indicate a place where the cooking container such as a pan is placed. Is displayed. In this embodiment, the induction heating coils 4 and 5 have a heating value of 3 Kw, and the induction heating coil 6 has a heating value of 2 Kw, but this is not limitative.

On the other hand, on the lower part of the top plate 3, on one side as viewed from the front of the main body part 2 (the left side in the figure is shown), a grill for grilling food such as fish with an electric heater (not shown) disposed therein. 7 is disposed, and the front opening of the grill 7 is opened and closed by a grill door 7A supported so that food such as fish can be pulled out to the front side. In addition, the electrical box 35 according to the present invention is disposed on the other side (the right side in the drawing is the right side) of the main body 2, that is, on the right side of the grill 7. The electrical box 35 is disposed on the front side of the electrical box 35. An operation panel 10 is disposed on the right side of the door 7A.

The induction heating coils 4, 5 and 6 are respectively supported by synthetic resin coil bases 4A, 5A and 6A, and are provided on a support plate portion 26 positioned below the top plate 3 as shown in FIG. The support boss 26A is attached with a screw 27. The support plate portion 26 may be specially provided, or may be formed of a ceiling plate that surrounds the grill 7 and an upper surface plate of the electrical box 35. Hereinafter, the support plate portion 26 is referred to as a ceiling plate 26. In the illustrated form, the coil base 4 </ b> A of the induction heating coil 4 is attached to the support boss 26 </ b> A of the ceiling plate 26 of the grill 7 with a screw 27. In addition, the coil base 5A of the induction heating coil 5 is attached to the support boss 39A of the upper surface plate 39 of the electrical box 35 with screws as will be described later, and the coil base 6A of the induction heating coil 6 is
As will be described later, a part is attached to the support boss 26A of the ceiling plate 26 of the grill 7 with screws 27, and the other part is attached to the support boss 39A of the upper surface plate 39 of the electrical equipment box 35 with screws.

The operation unit 10 includes a seesaw type power switch 11, three operation knobs 12 that perform push-on on / off, and an LED display unit 13 that is disposed corresponding to the three operation knobs 12. . The three operation knobs 12 correspond to the induction heating coils 4, 5 and 6, respectively, and are pulled out by a push operation, whereby the induction heating coils 4, 5
And 6 can be started by energizing, while being pushed by a push operation,
Their operation is stopped. Further, by rotating the operation knob 12 at the pull-out position, various settings such as heating power, cooking time, cooking temperature, etc. by the induction heating coils 4, 5, 6 can be performed.

A top plate frame 3A is provided on the outer periphery of the top plate 3, and an operation window 1 is provided on the front end side of the top plate frame 3A.
4 is perforated long in the left-right direction, and the operation window 1 is constituted by touch keys in the operation window 14.
5 is arranged. Touch areas such as a thermal key, a water heater key, and a deep-fried food key are formed on the operation unit 15 by printing. Further, in order to provide an exhaust port and an intake port at the rear portion of the top plate 3, a pair of left and right exhaust ports 16 and an intake port 17 are formed on the rear end side of the top plate frame 3A. On the other hand, a display unit 18 formed of a liquid crystal display panel with a backlight is provided between the operation unit 15 and the induction heating coils 4 and 5. The display unit 18 can display information related to cooking such as set thermal power, cooking time, cooking temperature, and the like in numbers and / or figures.

As shown in FIG. 2, the heating state indicator HP is formed on the front surface around the induction heating coils 4 and 5 on the coil bases 4A and 5A supporting the induction heating coils 4 and 5 by molding synthetic resin or the like. An arcuate light guide case 19 having a concave storage groove 19A having an upper opening is attached.
The concave storage groove 19A of the light guide case 19 stores a light guide 20 formed of an arc-shaped transparent resin material or the like (for example, acrylic resin) whose transverse side surface is square or circular. The arc-shaped strip-shaped light guide 20 is visible on the top plate 3 from the upper surface side, and the top plate 3 has an arc-shaped transparent light-transmitting portion 21 on the front side of the outer peripheral portion of the cooking container mounting portions 8, 8. Is formed, and the translucent portion 21 is formed.
A light guide case 19 is attached so that the light guide 20 is disposed directly below the light guide 20.

As shown in FIG. 3, the light guide 20 has light sources 22 arranged at both left and right ends thereof. Light source 2
2 includes an LED (light emitting diode) 23 that emits red light, an LED (light emitting diode) 24 that emits green light, and an LED (light emitting diode) 25 that emits blue light, and the intensity of heating by the induction heating coils 8 and 8 is increased. It emits visible light of different colors to display the medium and weak operating states.

FIG. 4 is a block diagram showing the electrical control unit 28 of the induction heating cooker 1 of the present embodiment. As shown in FIG. 4, the induction heating cooker 1 includes a main control unit 29 having a microcomputer configuration that controls each part of the induction heating cooker 1, the display unit 13, the display unit 18, and the light source 2 shown in FIG. 1.
2, the operation control unit 10 according to the operation unit 10 and the operation unit 15 illustrated in FIG. 1.
T, a memory 30 for storing various data necessary for controlling the induction heating cooker 1, an audio output unit 31, a speaker 32 connected to the audio output unit 31, a cooking function control unit 33 for controlling the cooking function It has each part. The cooking function control unit 33 includes an IH4 control unit 33A that controls energization of the induction heating coil 4, an IH5 control unit 33B that controls energization of the induction heating coil 5, an IH6 control unit 33C that controls energization of the induction heating coil 6, and a grill 7 includes a grill control unit 33D that controls energization of the electric heater 7 and a fan control unit 33E that controls the operation of the fan 40 of the electrical box 35, and controls each unit having functions related to cooking of the induction heating cooker 1. It is supposed to be.

The electrical box 35 has a method of accommodating the entire electrical control unit 28 of the induction heating cooker 1 or accommodating a selected control unit in the control unit 28. The electrical box 35 may be configured to accommodate the entire control unit 28. However, in the embodiment, the arrangement relationship between each control circuit unit and a portion connected to the control circuit unit, the wiring between the control circuit boards, and the like are considered. In the electrical box 35,
The selected control unit in the control unit 28 is accommodated. In that case, the electrical box 35 has
A control unit having a large calorific value in the control unit 28 is accommodated, and the accommodated control unit is designated as a single fan 4.
By cooling with 0, stable operation is ensured.

Since the control units 33A, 33B, and 33C related to the energization control of the induction heating coils 4, 5, and 6 are circuit configurations including an inverter circuit for variably controlling the heat generation amount, they are control units having a large heat generation amount. For this reason, at least the control box 33A, 33B is provided in the electrical box 35.
, 33C, and the control units 33A, 33B, 33C are cooled, the induction heating coils 4, 5 are cooled, the induction heating coil 6 is cooled, and the periphery of the induction heating coils 4, 5 is cooled. The cooling of the periphery of the induction heating coil 6 is performed by a single fan 40.

In the illustrated form, the induction heating cooker 1 is a type including a grill 7, and the electrical box 3
5 is arranged in a space on the right side of the grill 7. Hereinafter, the configuration of the induction heating cooker 1 including the grill 7 will be described in detail with reference to FIGS. 5 to 8. The electrical box 35 is disposed immediately below the induction heating coils 4 and 5 and the box main body 35A accommodated in a state in which the control unit related to the energization control of the induction heating coils 4, 5 and 6 is attached to the printed wiring board. Air duct part 3
5B. The air duct portion 35B is disposed in the left-right direction (lateral direction) in a substantially horizontal state on the upper surface portion of the box main body portion 35A.

The box body 35A has a storage structure that is stacked in three layers, and the lowermost first layer includes:
A first accommodating portion 36 that accommodates one of the control portions 33A and 33B related to the energization control of the induction heating coils 4 and 5 is formed. In the second layer in the middle, induction heating coils 4 and 5
The 2nd accommodating part 37 which accommodates the control part (33A in the illustration) which concerns on the other electricity supply control among these is formed. And the control part 3 which concerns on the electricity supply control of the induction heating coil 6 is provided in the uppermost 3rd layer.
A third accommodating portion 38 that accommodates 3C is formed.

When induction heating coils 4 and 5 have the same calorific value, induction heating coil 4
Alternatively, one of 5 is accommodated in the first accommodating portion 36 and the other is accommodated in the second accommodating portion 37. Further, when the induction heating coils 4 and 5 have different heat generation amounts, the larger heat generation amount is stored in the first storage portion 36, and the smaller heat generation amount is stored in the second storage portion 37. In the illustrated one, since the induction heating coils 4 and 5 have the same calorific value, the first accommodating portion 36 may accommodate the control portion 33A related to the energization control of the induction heating coil 4, Induction heating coil 5
The control unit 33B related to the energization control is accommodated. Hereinafter, description will be made based on this accommodation state.

FIG. 5 is an exploded perspective view of the electrical box 35. As is clear from this, the first accommodating portion 3
6, the 2nd accommodating part 37 and the 3rd accommodating part 38 are the forms which were enclosed with the bottom wall and the surrounding wall, respectively, and the upper surface was open | released, and are formed by the shaping | molding of the synthetic resin, respectively. Control unit 33B including an inverter circuit relating to energization control of induction heating coil 5 is accommodated in first accommodating portion 36, and control including an inverter circuit relating to energization control of induction heating coil 4 is accommodated in second accommodating portion 37. Part 33
A is accommodated, and the third accommodating portion 38 accommodates a control portion 33C including an inverter circuit related to energization control of the induction heating coil 6.

The control unit 33B has a configuration in which an electrical component 33B1 and a heat radiating fin (formed of an extruded aluminum material) 33B2 constituting the control unit 33B related to energization control of the induction heating coil 5 are attached to a printed wiring board. The control unit 33A has a configuration in which an electrical component 33A1 and a heat radiating fin (formed of an extruded aluminum material) 33A2 constituting the control unit 33A related to energization control of the induction heating coil 4 are attached to a printed wiring board. is there. Further, the control unit 33C includes an electric component 33C1 and a heat radiating fin (formed of an aluminum extrusion material) 33C constituting the control unit 33C related to the energization control of the induction heating coil 6.
Reference numeral 2 denotes a configuration attached to a printed wiring board.

The electrical box 35 is configured to cool the control units 33B, 33A, 33C and the induction heating coil 4,
A fan 40 is incorporated in the rear part of the electrical box 35 in order to cool 5 and 6 and to cool the periphery thereof. As shown in FIG. 7, the fan 40 is configured such that the sirocco fan 40 </ b> A is driven by the electric motor 40 </ b> B, and a fan case 40 </ b> C surrounding the sirocco fan 40 </ b> A and the electric motor 40 </ b> B are attached to the rear part of the electrical box 35. The sirocco fan 40A sucks air from an air suction port 41 opened on the side surface of the fan case 40C and is discharged from an air discharge port 42 opened on the front side of the fan case 40C. For this reason,
The fan case 40C is attached to the rear part of the electrical box 35 so that the air discharge port 42 extends over both the air inlets 36E and 37E formed in the rear wall surfaces of the first storage part 36 and the second storage part 37. Thus, the amount of air flowing into the air inlets 36E and 37E from the air discharge port 42 is divided into P and Q by the rear end of the bottom wall 37T of the second storage part 37, and the first storage part 36 and the second storage part 37
It circulates into the accommodating part 37 by dividing into P and Q.

The electrical equipment box 35 is provided with a communication duct 44 on the side surface portion for communicating the air outlet of the first housing portion 36 and the air inlet of the air duct portion 35B. Also, to guide the cooling air,
A duct 43 on the air suction side to the single fan 40 is arranged on the rear side of the electrical box 35 so as to communicate with the intake port 17 on the rear side of the induction heating cooker 1. Ducts 3 formed in the vertical direction on the right side surfaces of the first storage portion 36, the second storage portion 37, and the third storage portion 38, respectively.
6D, 37D, and 38D are integrally formed by molding. The communication duct 44 is connected to the duct 3.
6D, 37D, and 38D communicate with each other, and the electrical box 35 is formed in the vertical direction on the right side surface. A lower end portion serving as an air suction port of the communication duct 44 is formed by the duct 36D,
The upper end portion of the duct 38D serving as the air discharge port of the communication duct 44 is in a state of communicating with the right end portion serving as the air suction port of the blower duct portion 35B. In addition, the duct 43 on the air suction side is
The electric box 35 may not be integrated.

In the state in which the control units 33B, 33A, and 33C are accommodated and the single fan 40 is attached, the first accommodation is performed so that the upper surface opening of the first accommodation unit 36 is closed by the bottom wall of the second accommodation unit 37. Part 3
The second accommodating portion 37 is placed in the upper surface opening of 6. In addition, the third housing portion 38 is placed on the upper surface opening of the second housing portion 37 so that the top surface opening of the second housing portion 37 is closed by the bottom wall of the third housing portion 38. Also,
The upper surface plate 39 is placed on the upper surface opening of the third housing portion 38 so as to close the upper surface opening of the third housing portion 38 with the upper surface plate 39. Further, the air duct portion 35B is placed in the left-right direction on the upper surface of the upper surface plate 39 so as to be positioned between the three support bosses 39A.

The first housing portion 36 and the second housing portion 37 are integrated by joining the formed flange-shaped coupling portions 36A and 37A1 with screws. Further, the second accommodating portion 37 and the third accommodating portion 38 are integrated by joining the formed flange-shaped connecting portions 37A2 and 38A1 with screws. Further, the third accommodating portion 38 and the upper surface plate 39 are integrated by connecting the formed flange-shaped connecting portions 38A2 and 39A1 with screws. Furthermore, the upper surface plate 39 and the air duct portion 35B are integrated by connecting a flange-shaped coupling portion 35B1 formed in the air duct portion 35B to the coupling hole 39A3 of the upper surface plate 39 with a screw. The electrical box 35 assembled in this way is shown in FIG.

By such an assembly, the lower end portion serving as the air suction port of the communication duct 44 is the first
The upper end portion that communicates with the right side surface of the housing portion 36 and serves as the air discharge port of the communication duct 44 is in a state of communicating with the right end portion that serves as the air suction port of the air duct portion 35B.

When the assembled electrical box 35 is stored and installed in the main body 2, the top plate 39
The flange-shaped coupling portion 39A2 formed in the above and the flange-shaped coupling portion 35B2 formed in the air duct portion 35B are coupled to the ceiling plate 26 of the grill 7 with screws. In this way, the electrical box 35 is housed and installed in the main body 2, whereby the lower surface of the blower duct portion 35 </ b> B is blocked by the ceiling plate 26 of the grill 7, thereby forming a left-right air duct. In addition,
The air duct portion 35B may be in the form of a duct whose lower surface is closed in advance so as to form an air duct by itself.

In the state where the electrical box 35 assembled as described above is housed and installed in the main body 2 as shown in FIG. 1, the air duct 35 </ b> B is located in the space between the ceiling of the grill 7 and the top plate 3. It is located in the lower part of the coil bases 4A and 5A that support the induction heating coils 4 and 5 in a substantially horizontal arrangement in the left-right direction. In this state, the air around the induction heating cooker 1 sucked from the intake port 17 at the rear of the induction heating cooker 1 by the operation of the fan 40 passes through the intake duct 43 communicating with the intake port 17, and the air Sirocco fan 40 from the inlet 41
As shown by the arrow in FIG. 8, the air flows into the air inlets 36 </ b> E and 37 </ b> E formed at the rear end portions of the first storage portion 36 and the second storage portion 37 from the air discharge port 42. The amount of air flowing into the air inlets 36 </ b> E and 37 </ b> E from the air discharge port 42 is divided into P and Q by the rear end of the bottom wall 37 </ b> T of the second storage part 37, and P is supplied to the first storage part 36 and the second storage part 37. Divided into Q and Q.

The air that has flowed into the first housing part 36 cools the control part 33B, and then flows through the communication duct 44 to the blower duct part 35B. On the upper surface of the air duct 35B, induction heating coils 4, 5 are provided.
A plurality of air discharge ports 35D are formed as air discharge portions at positions corresponding to the lower surface of the induction heating coils 4, 5 and a coil base 4A for supporting the induction heating coils 4, 5 by air discharged from the air discharge ports 35D, Cool peripheral members such as 5A. The air that has cooled the peripheral members such as the induction heating coils 4 and 5 and the coil bases 4A and 5A that support the coils flows along the space on the lower surface of the top plate 3, while the display control unit 18T and other parts are cooled. However, it is discharged out of the induction heating cooker 1 from the exhaust port 16 at the rear of the induction heating cooker 1.

As described above, the air that has flowed into the first housing portion 36 cools the control portion 33B, and then is discharged from the lower side of the induction heating coils 4 and 5 so as to cool the induction heating coils 4 and 5 and the peripheral portion thereof. An air passage flowing in the air is formed, and this is referred to as a first air passage.

On the other hand, the air that has flowed into the second accommodating portion 37 cools the control portion 33A, and then the second accommodating portion 37.
From the communication portion 45 formed at the front end portion of the first housing portion and the front end portion of the third housing portion 38 to the third housing portion 38,
The controller 33C is cooled. The air that has cooled the control unit 33C is formed along the guide wall 48 with the upper surface plate 39 from the first air discharge port 46 that is partly formed in the upper surface plate 39 corresponding to the rear end portion of the third housing portion 38. It is discharged into the space between the top plate 3. The upper surface plate 39 is formed with a plurality of second air discharge ports 47 as air discharge portions at positions corresponding to the induction heating coil 6 and the coil base 6A that supports the induction heating coil 6 to cool the control portion 33C. The air cools the induction heating coil 6 and the coil base 6A that supports the induction heating coil 6 by the air discharged from the second air discharge port 47.

The air discharged from the first air discharge port 46 into the space between the upper surface plate 39 and the top plate 3 and the air discharged from the second air discharge port 47 flow along the lower surface of the top plate 3, Each part is discharged from the induction heating cooker 1 to the outside of the induction heating cooker 1 through the exhaust port 16 at the rear of the induction heating cooker 1.

Thus, after the air flowing into the second housing part 37 cools the control part 33A, it flows into the third housing part 38 and cools the control part 33C, thereby cooling the induction heating coil 6 and its peripheral part. Thus, the flowing air passage is formed, and this is referred to as a second air passage.

As described above, in the electrical box 35, the air duct 35B passes through the communication duct 44 from the first housing portion 36 as an air passage through which cooling air discharged from the air discharge port 42 by the single fan 40 flows. A first air passage that cools the induction heating coils 4 and 5 and the periphery thereof, and a second air passage that flows from the second housing portion 37 to the third housing portion 38 and cools the induction heating coil 6 and the periphery thereof. Is formed. For this reason, the ratio of the amount of air blown by P and Q from the air discharge port 42 to the first housing portion 36 and the second housing portion 37 by the single fan 40 is the same as that of the first air passage and the second air passage. It is preferable that the air is diverted at a rate at which the cooling effect in the air passage is appropriately performed.

Induction heating coils 4 and 5, induction heating coil 6, and control unit 3 according to these energization controls
The amount of heat generated in the air passage is determined by the air passage in which 3B, 33A, and 33C are arranged. In the configuration of the embodiment, the first air passage is more than the amount of heat generated in the second air passage. This is a setting that generates a large amount of heat. For this reason, the diversion ratio of the air discharged from the air discharge port 42 by the fan 40 is determined so that the amount of air flowing through the first air passage is larger than the amount of air flowing through the second air passage.

As one of the embodiments, since the heat generation amount of the first air passage is substantially three times the heat generation amount of the second air passage, the air amount P flowing into the first storage portion 36 is the second storage portion. The air discharge port 42 is arranged with respect to the air inlet at the rear end of the first housing portion 36 and the second housing portion 37 so that the air amount 3 times the air amount Q flowing into the portion 37 flows. A preferable cooling effect is obtained by the configuration in which the air is blown while being divided from the air discharge port 42 at a ratio of 3: 1.

The electrical box 35 accommodates a control unit with a large calorific value in the control unit 28, and these control units are cooled by a single fan to ensure stable operation. In the configuration, the control units 33B, 33A and 33C related to the energization control of the induction heating coils 5, 4 and 6 which are the control units having a large calorific value in the control unit 28 are divided into three layers, each of which is the first. It is the structure accommodated in the accommodating part 36, the 2nd accommodating part 37, and the 3rd accommodating part 38. FIG.

However, the operation control unit 10T, the display control unit 18T, the main control unit 29, the memory 30, the sound output unit 31, the grill control unit 33D, and the fan control unit 33E, which are other parts of the control unit 28, are provided.
Among them, the selected one or all of them may be housed in any one of the first housing portion 36, the second housing portion 37, and the third housing portion 38 or in a distributed manner. For example, you may make it accommodate the grill control part 33D with a large emitted-heat amount in the 1st accommodating part 36. FIG. Alternatively, the grill control unit 33D may be stored in the first storage unit 36, and the main control unit 29 may be stored in the second storage unit 37 or the third storage unit 38. Further, as shown in FIG. 1, the display control unit 18T
Are arranged in the lower space of the top plate 3, and the other operation control unit 10T, the main control unit 29, and the memory 3 are arranged.
0, the audio output unit 31, the grill control unit 33D, and the fan control unit 33E may be distributed and accommodated in the first accommodation unit 36, the second accommodation unit 37, and the third accommodation unit 38, respectively.

Also in this case, the heat generation amount of the first air passage is larger than the heat generation amount of the second air passage. For this reason, the diversion ratio of the air discharged from the air discharge port 42 by the fan 40 is determined so that the amount of air flowing through the first air passage is larger than the amount of air flowing through the second air passage. In the configuration in which the heat generation amount of the first air passage is substantially three times the heat generation amount of the second air passage, the air amount P flowing into the first housing portion 36 flows into the second housing portion 37. The air discharge port 42 is arranged with respect to the air inlets at the rear ends of the first storage portion 36 and the second storage portion 37 so that an air amount three times as large as the air amount Q flows. A preferable cooling effect is obtained by the structure in which the air is blown while being divided into a ratio of 3: 1.

Moreover, although the induction heating cooking appliance 1 demonstrated above is provided with the induction heating coils 5, 4, and 6, it is provided with one induction heating coil (for example, induction heating coil 5) of one calorific value, and one In the induction heating cooker 1 including the induction heating coil 6 with a small calorific value, the control unit 33C is accommodated in the second accommodating part 37, and the second accommodating part 38 is omitted. The second housing part 37 is placed on the top opening, and the top opening of the second housing part 37 is closed by the top plate 39.
An upper surface plate 39 is placed on the upper surface opening of the accommodating portion 37. In addition, the air duct portion 3
What is necessary is just to set it as the structure which mounts 5B in the left-right direction state.

In this case, as an air passage through which the cooling air discharged from the air discharge port 42 by the single fan 40 flows, control related to energization control to the one induction heating coil (for example, the induction heating coil 5) having a large calorific value. A first induction heating coil side air passage that flows through the accommodating portion 36 that accommodates the portion 33B, discharges from the blower duct portion 35B through the ducts 36D and 37D, and cools the induction heating coil 5 and its peripheral portion; It flows through the accommodating portion 37 that accommodates the control portion 33C related to the energization control to the induction heating coil 6 with a small amount of heat generation, and is discharged from the lower side of the induction heating coil 6 with a small amount of heat generation, so that the induction heating coil 6 and the peripheral portion are A second induction heating coil side air passage to be cooled is formed. Also in this case, since the heat generation amount of the first induction heating coil side air passage is larger than the heat generation amount of the second induction heating coil side air passage, the fan 40 is larger than the air amount of the second induction heating coil side air passage. The air discharge port 42 is formed with air inlets 36E and 37E formed on the rear surfaces of the housing portions 36 and 37 in such a relationship that a large amount of air flows in the first induction heating coil side air passage.
It is attached to the electrical equipment box 35 so that it may extend over both.

The induction heating cooker 1 described in the first embodiment includes the induction heating coils 5, 4 and 6, but instead of the induction heating coil 6, a radiant heater (also referred to as a radial heater),
(Hereinafter referred to as RH). In this case, the electrical control unit 28 shown in FIG. 4 may be provided with a control unit (hereinafter referred to as the control unit 33H) related to energization control of the radiant heater instead of the IH6 control unit 33C. Electrical box 3
If this control part 33H is accommodated in the 5th 3rd accommodating part 38 and the flow of air similar to the above is formed, the effect similar to the above can be achieved.

1 to 8 and the above description, the induction heating coil 6 is the radiant heater RH, and the IH6 controller 33C is the energization controller 3 of the radiant heater RH.
If 3H, the other parts are the same as described above. The technical means in this case are as follows.

That is, the induction heating cooker 1 according to the fourth aspect of the present invention includes a top plate on the upper surface of the main body, an induction heating coil and a radiant heater inside the main body, and a grill on one side when viewed from the front. An induction heating cooker in which an electrical box is disposed on the other side, and a control unit for controlling energization of the induction heating coil and the radiant heater is housed in the electrical box, wherein the electrical box includes the induction heating An induction part in the space between the top plate and the grill so as to discharge the air flowing in the accommodation part from the lower side to the induction heating coil; A blower duct portion disposed immediately below the heating coil, a housing portion that is stacked on the housing portion and houses a control portion related to energization control of the radiant heater, and discharges air to each of the housing portions. Single A fan, and the electrical box flows through a housing portion that houses a control unit related to energization control of the induction heating coil so that air discharged from the fan flows in a diverted flow, and is discharged from the air duct portion. The induction heating coil and the air passage that cools the periphery thereof, and the accommodating portion that accommodates the control portion related to the energization control to the radiant heater are discharged from the lower side of the radiant heater to discharge the radiant type. An air passage for cooling the heater and the peripheral portion is formed, and air passing through both the air passages is discharged from the rear portion through the space below the top plate.

An induction heating cooker according to a fifth aspect of the present invention includes a top plate on the upper surface of the main body, and induction heating coils arranged on the left and right inside the main body, and radiation arranged on the central back side of the left and right induction heating coils. Induction heating cooker comprising an electric heater and an electric box that houses a control unit for controlling energization of the induction heating coil and the radiant heater, wherein the electric box is connected to one of the left and right induction heating coils. A first accommodating portion for accommodating a first control portion related to the energization control, and a second control portion for energizing control of the other induction heating coil that is stacked on the first accommodating portion and is stacked on the first accommodating portion. A second accommodating portion, a third accommodating portion that is stacked on the second accommodating portion and accommodates a third control portion related to energization control of the radiant heater, and the air that has flowed through the first accommodating portion. Down to left and right induction heating coils And air duct portion which is disposed directly below the induction heating coil of the left and right arrangement in the space between the top plate and the grill to al discharged, said first housing portion and the second
A single fan that diverts to the accommodating portion and discharges air, and the electrical box flows through the first accommodating portion so that the air discharged from the fan diverges and flows from the air duct portion. A first air passage for discharging and cooling the induction heating coil and the peripheral portion; and a flow from the second storage portion to the third storage portion and discharging from below the radiant heater to discharge the radiant heater and the peripheral portion. A second air passage that cools the air, and a heat generation amount of the first air passage is larger than a heat generation amount of the second air passage, and air in the first air passage is larger than an air amount of the second air passage. An air discharge port of the fan is disposed with respect to the air inlets of the first air passage and the second air passage so that a large amount of the air is diverted.

As a result, the following effects can be obtained. That is, according to the fourth and fifth inventions, the induction heating cooker has an induction heating coil and a radiant heater (also called a radiant heater).
The control unit of the induction heating coil and the radiant heater is housed in an electrical box, cooling of the control unit, cooling of the induction heating coil and its peripheral members, and further, the radiant heater and its peripheral members Thus, it is possible to provide an electrical box configuration in which the cooling can be effectively performed by a single fan.

And the electrical equipment box of 4th invention and 5th invention is set as the form which accommodates the control part corresponding to an induction heating coil, and the control part corresponding to a radiation type heater in a respectively different accommodating part, and these accommodating parts are laminated | stacked. By adopting a configuration in which this single fan is integrated into the electrical box so that air is diverted to each accommodating portion by a single fan and air is sent.
Each housing part serves as an air duct, so that the cooling effect of these control parts can be improved, and the control part corresponding to the induction heating coil and the radiant heater is housed in which housing part. Therefore, it is possible to improve serviceability such as repair / inspection of the corresponding control unit.

Furthermore, in the fifth invention, in the induction heating cooker provided with two induction heating coils and one radiant heater, a control unit related to energization control to the radiant heater and energization control to the two induction heating coils. Each control unit is a three-layer stacked electrical box housed in a separate housing unit,
By integrating a single fan into the electrical box and allowing the air from this fan to be diverted and fed into each housing part of the three-layer stack, each housing part acts as an air duct, It is possible to improve the cooling effect, and it is easy to determine which storage unit contains the control unit corresponding to each induction heating coil and the control unit corresponding to the radiation heater, and repair of the corresponding control unit -Serviceability such as inspection can be improved.

The induction heating cooker according to the present invention is not limited to the configuration shown in the above embodiment, but can be applied to various forms, and includes various forms within the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Induction heating cooker 2 ... Main-body part 3 ... Top plate 4 ... Induction heating coil 5 ... Induction heating coil 6 ... Induction heating coil or radiant heater (radiant heater)
7 ... Grill 7A ... Grill door 8, 9 ... Cooking container placement part 10 ... Operation panel 11 ... Power switch 12 ... Operation knob 13 ... -Display unit 14 ... Operation window 15 ... Operation unit 16 ... Exhaust port 17 ... Intake port 18 ... Display unit 18T ... Display control unit 19 ... Light guide case 20... Arc-shaped light guide 21... Translucent part 22.
24 ... LED
25 ... LED
26... Support plate portion 27... Screw 28... Electrical control unit 29... Main control unit 30 ... Memory 31. Speaker 33 ... Cooking function control unit 33A ... IH4 control unit 33B ... IH5 control unit 33C ... Heater 6 control unit 33D ... Grill control unit 33E ... Fan control unit 35 ...・ Electrical box 35A ... Box body 35B ... Blower duct 36 ... First housing 36D ... Duct 36E ... Air inlet 37 ... Second housing 37D ... Duct 37E ... Air inlet 37T ... Bottom wall 38 ... Third housing part 38D ... Duct 39 ... Top plate 40 ... Fan 40A ... Sirocco fan 40B ... Electric motor 40C ・ ・ ・ Fan case DESCRIPTION OF SYMBOLS 1 ... Air intake port 42 ... Air discharge port 43 ... Intake duct 44 ... Communication duct 45 ... Communication part 46 ... First air discharge port 47 ...・ ・ Second air outlet 48 ・ ・ ・ ・ Guide wall

Claims (3)

A top plate is provided on the upper surface of the main body, an induction heating coil is provided inside the main body corresponding to the top plate, a grill is arranged on one side when viewed from the front, and an electrical box is arranged on the other side. In the induction heating cooker in which the control unit related to energization control to the induction heating coil is accommodated in the electrical box, the electrical box is rear of the accommodating part for blowing air to the accommodating part that accommodates the control part. And a fan duct portion disposed in a space between the top plate and the grill so as to discharge air flowing in the accommodating portion from the lower side to the induction heating coil. The induction heating cooking is characterized in that the air cooled is discharged from the rear through the space below the top plate while cooling the induction heating coil and its peripheral members by discharging from the air duct portion. . A top plate is provided on the upper surface of the main body, and an induction heating coil having a different calorific value is provided inside the main body corresponding to the top plate, and a grill is disposed on one side when viewed from the front, and the other side In the induction cooking device, an electrical box that houses a control unit related to energization control to the induction heating coil is arranged, wherein the electrical box has a control unit related to energization control to the induction heating coil that generates a large amount of heat. A large amount of heat is generated in a space between the top plate and the grill so that a large amount of heat is discharged to the induction heating coil having a large amount of heat generated from the lower side. An air duct portion disposed immediately below the heating coil, a housing portion that is stacked on the housing portion and houses a control portion related to energization control of the induction heating coil with a small amount of heat generation, and each housing portion. Single air flow And the electrical box flows through a housing portion that houses a control unit for controlling energization of the induction heating coil having a large heat generation amount so that the air discharged from the fan flows in a diverted flow. The first induction heating coil side air passage that cools the induction heating coil that discharges from the blower duct part and generates a large amount of heat and its peripheral part, and the control relating to energization control to the induction heating coil that generates a small amount of heat Forming an induction heating coil having a small amount of generated heat and cooling the peripheral portion, and a second induction heating coil side air passage for cooling the peripheral portion. And the induction heating cooking appliance characterized by the air which passed through the said both air passages being discharged | emitted from the rear part through the lower space of the said top plate. A top plate is provided on the upper surface of the main body, and the left and right induction heating coils and the left and right induction heating coils are arranged in the center of the inside of the main body corresponding to the top plate. The induction heating coil having a small calorific value is provided, a grille is arranged on one side as viewed from the front, an electrical box is arranged on the other side, and a control unit for controlling energization of each induction heating coil includes the electrical equipment In the induction heating cooker housed in the box, the electrical box includes a first housing part that houses a first control unit that controls the energization of the one induction heating coil in the left and right arrangement, and the first housing part. A second accommodating portion that accommodates a second control unit that is laminated on the second induction heating coil that is laminated on the left and right, and an induction heating that is laminated on the second accommodating portion and that generates a small amount of heat. The third related to energization control to the coil A left and right side in a space between the top plate and the grill so as to discharge the air that has flowed through the first containing portion from the lower side to the induction heating coil arranged in the left and right direction. A blower duct portion arranged in the left-right direction at a position directly below the induction heating coil of the arrangement, and a single fan that diverts the air into the first housing portion and the second housing portion and discharges air.
The electrical box is configured so that the air discharged from the fan flows in a diverted manner.
A first air passage for flowing through the housing portion and discharging from the air duct portion to cool the left and right induction heating coils and the peripheral portion; and from the second housing portion through the third housing portion, the heating value is small. An induction heating coil that discharges from the lower side of the induction heating coil and forms a second air passage that cools the peripheral portion and an induction heating coil that generates a small amount of heat, and air that passes through the first air passage and the second air passage An induction heating cooker which is discharged from the rear through the space below the top plate.

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