CN1884921B - Heating cooker - Google Patents

Abstract

The present invention provides a heating cooker capable of suppressing temperature rise of an operation portion disposed on a door while maintaining good operability during or after heating cooking using a heater. When the cabinet (1) of the microwave oven is configured such that the entire front of the cabinet (1) becomes the heating chamber (2), and the operation panel portion (11) is arranged below the door (4), a horizontally long rectangular one is arranged on the upper left side. In the display part (12), an operation knob (13) and a start key (14) are arranged on the upper right side, and a plurality of operation keys (15) are arranged on the same row below it. The operating knob (13) has a circular operating element that protrudes forward from the front of the door (4), and the start key (14) has an operating element that has approximately the same shape as the operating knob (13) but has a slightly shorter length protruding forward. . In addition, the operation key (15) has a horizontally long rectangular operation element whose operation surface is the same as the plane of the operation panel portion (11) or protrudes slightly.

Description

heating cooker

technical field

The present invention relates to a heating cooker having an operation panel under a door for opening and closing a heating chamber. the

Background technique

In the heating cooker, in order to make the volume of the heating chamber larger, there is a heating cooker configured in such a way that by setting the machine room at the lower part or the back part of the cabinet, the front of the cabinet is made substantially whole by a door. to open and close the structure. In such a heating cooker, the operation panel portion is also disposed on a part of the door, and the heating chamber is located inside the door, so the door is also blocked especially when performing heating cooking using an electric heater (heater) as a heating device. Heating, so the temperature of the operation panel also rises. Furthermore, since the temperature in the heating chamber becomes higher upward, the temperature of the door surface also tends to increase from the center upward. Therefore, the operation panel portion is arranged at the lower portion of the door for the purpose of avoiding temperature rise. the

For example, Patent Documents 1 and 2 below disclose configuration examples of the heating cooker as described above. In Patent Document 1, a display unit and an operation key (manual operation key) are provided separately on the left and right sides of an operation panel unit provided at the lower portion of the door. In addition, in Patent Document 2, on the same operation panel portion, a display portion, operation keys and operation dials are arranged in parallel in substantially the same row. the

Patent Document 1: Japanese Patent Laid-Open No. 2000-002432 (see Figure 1(a))

Patent Document 2: Japanese Patent Laid-Open No. 2004-309060 (see Figure 3)

However, the heating cooker having the above-mentioned conventional structure has the following problems. That is, even when the operation panel part is provided at the lower part of the door, if, as in Patent Document 1, the display part and the operation keys are separately provided on the left and right sides of the operation panel part, when cooking with the heater is performed, as described above, from the door The temperature becomes relatively high in the upper part from the center of the door, so there is a problem that the surface of the operation keys arranged near the center of the door becomes high temperature.

In addition, as in Patent Document 2, if the display unit, operation keys, and operation knobs are arranged in parallel in substantially the same row in the narrow area of the lower part of the door, the temperature on the surface of the operation keys due to heat conduction can be suppressed because they are farther away from the center of the door. However, it is necessary to reduce the size of the display part and the operation keys, and there is a problem that the operation keys are difficult to operate. the

Contents of the invention

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a heating cooker capable of suppressing an increase in temperature of an operation part arranged on the door during execution of heating cooking using a heater or after completion of heating cooking. , while maintaining its operability well. the

In order to achieve the above object, a heating cooker according to one aspect of the present invention is characterized by comprising: a box having a heating chamber and an opening for allowing an object to be heated to enter and exit the heating chamber; a heating device arranged in the heating chamber; A door provided on the above-mentioned box in such a manner that the above-mentioned opening can be opened and closed; and an operation panel, which is provided on the front of the above-mentioned door, and has an operation device for controlling the operation of the above-mentioned heating device and a display for displaying the operation status of the above-mentioned heating device A device; wherein, the operating device is disposed below the display device. the

In the heating cooker of this form, when performing heating cooking using the heating device, the heat in the heating chamber is transferred to the door, and the temperature of the operation panel portion rises. However, as described above, if the operation device is arranged below the display device, Then, even if the display device and the operation device are respectively enlarged, the temperature rise of the operation device can be suppressed. Furthermore, the display area of the display device can also be ensured. the

Moreover, the heating cooker of another aspect of this invention is characterized in that the said display device is arrange|positioned rather than the said operation device on the left side of the said door front surface. It is characterized by the above-mentioned. the

According to the heating cooker of this aspect, similarly to the heating cooker of the above-mentioned aspect, it is possible to suppress the temperature rise of the operating device. the

In addition, the heating cooker according to still another aspect of the present invention is characterized in that the operating device includes a manual pressing type operating element and a manual rotating operating element, and the manual pressing type operating element is disposed below the manual rotating operating element. . the

According to the heating cooker of this aspect, similarly to the heating cookers of the above-mentioned two aspects, the temperature rise of the operation device can be suppressed, while the operability can be maintained well, and the display area of the display device can also be secured. the

According to the heating cooker according to one aspect of the present invention, the operating device can be favorably operated during or after heating cooking. In addition, it is also possible to enlarge the display area of the display device so that the displayed content can be easily seen. the

Moreover, according to the heating cooker of another aspect of this invention, similarly to the heating cooker of the said aspect, an operation apparatus can be operated favorably. the

Moreover, according to still another aspect of the cooking device of the present invention, similarly to the heating cooker of the above-mentioned aspect, the operation device can be operated satisfactorily, and the display content of the display device can be easily seen. the

Description of drawings

1 is a diagram showing the appearance of a heating cooker according to a first embodiment of the present invention, (a) is a front view, and (b) is a partial side view;

Fig. 2 is a block diagram (block diagram) representing the electrical structure of the heating cooker;

Fig. 3 is the figure of the modified example of Fig. 1 (b) when the user operates the operation part;

Fig. 4 is a diagram showing an example of the temperature distribution state of the door;

Fig. 5 is the figure that represents the modified example of Fig. 1 (a) of the 2nd embodiment of the present invention;

Fig. 6 is a diagram showing a modified example of Fig. 5 according to the third embodiment of the present invention. the

Label description

In the accompanying drawings, 1 represents a box body, 2 represents a heating chamber, 4 represents a door, 6 represents a microwave heating part (heating device), 8 represents a heater heating part (heating device), 11, 17, 19 represent an operation panel part, 12 13 and 20 represent a display unit, 13 represents an operation knob, 14 represents a start key, and 15 and 18 represent operation keys. the

Detailed ways

(first embodiment)

Next, a first embodiment in which the heating cooker of the present invention is applied to a microwave oven (microwave oven) will be described with reference to FIGS. 1 to 4 . the

Fig. 1(a) is a front view of the appearance of the microwave oven of this embodiment, and Fig. 1(b) is a partial side view. As shown in FIG. 1 , the cabinet of the microwave oven is constructed by fixing a rectangular inner box (not shown) similarly opened at the front to a rectangular box-shaped cabinet 1 with the front open. Furthermore, the inside of the inner box is formed as a heating chamber 2 for accommodating the object to be heated, and substantially the entire front area of the box body 1 serves as an opening for allowing the object to be heated to enter and exit the heating chamber 2 . the

The opening of the heating chamber 2 can be opened and closed by rotating the door 4 up and down. The lower end of the door 4 is pivotally supported on the box body 1 on the left and right sides in FIG. 1( a ) in a rotatable manner. When the door 4 is opened and closed, as one side is shown in FIG. The range is limited to roughly 90 degrees. the

A machine room not shown in the figure is formed on the back side of the box body 1, and a microwave heating unit (heating device, indicated by reference numeral 6 in FIG. 2 ) including a magnetron (magnetron) and A high-frequency power supply, etc., are used to heat the object to be heated stored in the heating chamber 2 by radiating microwaves during microwave cooking (oven cooking); 7 and expressed) and so on. And, be provided with in heating chamber 2: heater heating part (heating device, in Fig. 2 endows the numeral 8 and represents), it comprises the upper heater (not shown) etc. that is arranged on furnace top, is used for baking Heating the object to be heated stored in the heating chamber 2 during roasting and cooking (only one ブン conditioning); and a temperature sensor (temperature sensor) for detecting the temperature of the object to be heated (represented by a reference numeral 9 in FIG. 2 ), etc. . the

In addition, in the upper part of the front of the door 4, a handle 10 for opening and closing the door 4 for the user (user) is provided, and a display operation panel part 11 is provided in the lower part, which includes settings for cooking and settings. Confirmed operating device and display device. In this operation panel part 11, a horizontally long rectangular display device, such as a display part 12, is arranged on the upper left side, an operating device such as an operation knob 13 and a start key (start key) 14 are arranged on the upper right side, and a A plurality of operation keys 15 are arranged on the same row. the

Moreover, the operating knob 13 has a circular operating element protruding forward from the front of the door 4 and is configured to be rotated and pressed. The start key 14 has approximately the same shape as the operating knob 13 but protrudes forward slightly The operating elements are short and configured so that they can be pressed (see FIG. 1(b)). In addition, the operation key 15 has a horizontally long rectangular operation element and is configured to be press-operated. Figure 1(b)). the

Here, the arrangement position of the operation key 15 is located below the lower end of the opening of the heating chamber 2 shown by the dotted line in FIG. 1( b ). In addition, the operation knob 13 and the start key 14 are made of resin or the like, which is a material having a thermal conductivity lower than that of glass, which is a material constituting the door 4 . the

Next, a schematic electrical configuration of a microwave oven will be described. As shown in FIG. 2, on the microcomputer 7 as the control device that the microwave oven has, there are connected: a display unit 12 for displaying the heating time and heating temperature, and an operation knob 13 for setting and inputting the heating time and heating temperature. And the operation key 15, the start key 14 (not shown) that instructs heating cooking to start, and the temperature sensor 9 that detects the temperature in the heating chamber 2. In addition, the microcomputer 7 is connected with a buzzer 16 for reporting the completion of cooking, etc., and the microwave heating part 6 and the heater heating part 8 are respectively connected via a driving circuit (not shown). the

Next, the action of this embodiment will be described with reference to FIGS. 3 and 4 as well. For example, when heating cooking by the heater heating unit 8 , that is, baking cooking, the user opens the door 4 , arranges food or other objects to be heated in the heating chamber 2 , and then closes the door 4 . Next, operate the operation knob 13 and the operation key 15 to set to obtain the desired cooking time and cooking temperature. In addition, at this time, the cooking time, cooking temperature, and the like are displayed on the display unit 12 . the

Here, since the operating element of the operating knob 13 protrudes more than the operating element of the operating key 15, as shown in FIG. , the operation knob 13 becomes an obstacle. Therefore, as shown in FIG. 3( a ), by arranging the operation key 15 below the operation knob 13 , the operability of the operation key 15 can be improved. Then, after all the settings are finished, press the start key 14 to start baking and cooking. the

After roasting and cooking starts, the object to be heated stored in the heating chamber 2 is heated by the radiant heat generated by the heater heating part 8 . Then, the heat is also transmitted to the door 4, so the door 4 is also heated, and the temperature of the operation panel portion 11 also rises. Here, FIG. 4 is a figure which shows an example of the temperature distribution state of a door part in execution of roast cooking. As shown in FIG. 4 , the temperature of the door 4 tends to be as follows: from the center to the area A1 slightly above, the temperature is the highest, and from this area to the outer peripheral edge, the temperature decreases in the order of A2 to A4, and the temperature on the outside of the area A4 is higher than that of the area A4. The area below door 4 has the lowest temperature. Therefore, in the region of the operation panel portion 11 arranged below the door 4 , the temperature rise of the surface of the operation element of the operation key 15 located below is suppressed. the

On the other hand, although the operation knob 13 and the start key 14 are arranged on the upper right side of the operation panel part 11, since they are made of a material such as resin with low thermal conductivity, heat transfer from the door 4 can be suppressed. Furthermore, since the operation elements of the operation knob 13 and the start key 14 protrude forward from the surface of the door 4 , temperature rise on the operation surface is suppressed. the

When it is necessary to change the setting conditions such as cooking time and cooking temperature in the middle of such roasting and cooking, and when performing other cooking after the roasting and cooking is finished, the user operates the operation knob 13, the start key 14 and the operation key 15 again. , but at this time, the temperatures of the respective operation surfaces basically do not rise, so the user can comfortably operate these components to change the setting, or start other cooking. the

As described above, according to the present embodiment, when the substantially entire front of the cabinet 1 of the microwave oven is configured as the heating chamber 2 and the operation panel portion 11 is disposed below the door 4, the operation keys are disposed below the operation panel portion 11. 15, therefore, the temperature rise of the surface of the operation element of the operation key 15 can be suppressed during or after the roast cooking is performed. In addition, since the operation element of the operation knob 13 disposed above the operation key 15 is formed in a shape protruding forward from the door surface, temperature rise on the surface of the operation element can also be suppressed for the operation knob 13 . Therefore, the user can comfortably operate these components, and change the setting during or after the roast cooking is being performed. the

In addition, as a result of the arrangement of the operation keys 15 below the operation knob 13 , the user can operate the operation keys 15 without feeling the hindrance of the operation knob 13 when inputting settings by the operation keys 15 . the

Moreover, since the display unit 12 is arranged on the upper left side of the operation panel unit 11, and the operation knob 13 is arranged on the upper right side, when the user operates the operation knob 13 to set to obtain the desired cooking time, cooking temperature, etc. , the display content of the display unit 12 is easy to see. the

In addition, since the start key 14, which is frequently used, is configured as a push operation element having a shape protruding forward from the front of the door, and is arranged above the operation key 15, the temperature rise on the surface of the operation element can be suppressed, and the operation can be expanded. surface to improve operability. the

Furthermore, since the operation knob 13 and the start key 14 are made of resin having a thermal conductivity lower than that of the glass constituting the door 4, the influence of the heat transmitted from the surface of the door 4 can be reduced to further suppress the temperature rise of the surface of the operation element. the

In addition, since the operation knob 13 is configured so that input can also be performed by pressing, it is possible to reduce the number of operation keys 15 that are similarly pressed, and increase the size of each operation key 15 by the above-mentioned reduction amount to improve operability. the

Moreover, since the operation key 15 is constituted by a horizontally long rectangular operation element, it can be arranged in a narrow area below the operation panel portion 11 without impairing the operability.

In addition, since the operation key 15 is disposed below the lower end of the opening of the heating chamber 2 , it is less likely to be affected by heat from the heating chamber 2 . the

(second embodiment)

Next, a second embodiment of the present invention will be described with reference to FIG. 5 . In addition, the same reference numerals are assigned to the same parts as those of the first embodiment described with reference to FIG. the

As shown in FIG. 5 , a start key 14 and a plurality of operation knobs 13 are arranged on the same row on the upper right side of the operation panel portion 17 . In addition, the size of the operation keys 18 is arranged larger than that of the operation keys 15 of the first embodiment, and the number of operation keys 18 is arranged smaller than that of the operation keys 15 of the first embodiment. the

According to the second embodiment constituted as above, the operation keys 18 for replacing the functions set by the operation knobs 13 can be reduced by the amount that the number of the operation knobs 13 increases, and the respective sizes of the operation keys 18 can be increased by the same amount. Reduced volume improves operability. the

(third embodiment)

Next, a third embodiment of the present invention will be described with reference to FIG. 6 . In addition, the same reference numerals are assigned to the same parts as those of the second embodiment described with reference to FIG. 5, and description thereof will be omitted, and only the different parts will be described below. the

As shown in FIG. 6, on the operation panel portion 19, a display portion 20 having a size larger than that of the display portion 12 of the first embodiment is disposed on the left side, and a start key 14 and a multi-function key are disposed on the same row on the upper right side. There is an operation knob 13, and a plurality of operation keys 18 are arranged on the same row below it. the

According to the third embodiment constituted as above, when the number of operation keys 18 can be reduced, if the display unit 20 is arranged on the left side of the operation panel unit 19 and the dimension in the height direction is increased, the display unit 20 can be made larger. Each display is larger, making it easier for the user to see the display. the

In addition, the present invention is not limited to the above-described embodiments, and may be modified or expanded as described below. the

The so-called "door surface" is not necessarily limited to a plane. For example, as disclosed in FIG. 1 of Patent Document 1, even if one end of one plane is joined to an end of another plane in an inclined manner, as long as it is integrally formed as a door, it can be As "the face of the door". the

The shape of the activation key is not limited to a circle, but can also be made into a square. the

The operating knob can also be made for turning operation only. the

The shape of the operation key may not be horizontally long. the

Depending on the temperature rise state of the door, the material of the operation knob and the start key may be made of a material having the same thermal conductivity as that of the door. the

The heating device may be either a microwave heating unit or a heater heating unit. the

Claims (1)

1. A heating cooker, characterized in that: the heating cooker comprises: a box body, which has a heating chamber and an opening that allows the object to be heated to enter and exit the heating chamber; a heating device arranged in the heating chamber; The opening and closing of the opening is provided on the door of the box; and an operation panel, which is provided on the front of the door, has an operating device for controlling the operation of the heating device and a display device for displaying the operating state of the heating device; Wherein, the above-mentioned operation panel is arranged under the above-mentioned door, The above-mentioned operating device includes a manual pressing type operating element and a manual rotating operating element, The manual push-type operating element is composed of: an activation key protruding forward from the surface of the door; The above-mentioned starting key is arranged at the same height as the above-mentioned manual rotating operation element; The above-mentioned starting key and the above-mentioned manual rotating operation element are arranged on the right side compared with the above-mentioned display device; The operation keys are disposed below the manual rotary operation element, and are disposed below the display device.

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