JPH08152143A - Cooker - Google Patents

Abstract

PURPOSE: To prevent deformation and change in color of an operation panel of a microwave oven that is capable of performing oven cooking, by restraining a rise in temperature of the operation panel. CONSTITUTION: A recessed part 11 is provided on a side 7a of an operation panel 7 located near a door 5, and a sidewall of the recessed part 11 has a slope with an obtuse angle to a bottom wall 11a. Therefore, the distance between the operation panel 7 and the door 5 is increased so that ant air layer is broadened and heat insulating effect is enhanced. As a result, a rise in temperature of the operation panel 7 due to the heat of a heating chamber 4 that radiates from the door 5 and a gap between the door 5 and the heating chamber 4 is restrained and cleaning of the inside of the recessed part 11 becomes easy.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to the structure of a cooker.

[0002]

2. Description of the Related Art A cooker of this type is disclosed in Japanese Patent Laid-Open No. 60-2465.
No. 89 publication.

This is provided with a heating chamber provided in the main body for heating an object to be heated, a door provided at the opening of the heating chamber so as to be openable and closable, and provided in front of the main body and above the door. The operation panel includes an operation panel, a heating device that raises an ambient temperature in the heating chamber, a control device that is provided on a back surface of the operation panel to control the heating device, and a cooling fan that cools the control device. An exhaust hole is provided on the lower surface of the cooling fan so that the cooling air from the cooling fan is exhausted from the exhaust hole.

That is, the hot air in the heat chamber is not passed through the gap between the door and the main body toward the operation panel or the hot air in the heat chamber is not applied to the operation panel, and is exhausted to the outside together with the cooling air. To lower the temperature of the operation panel,
It is possible to use a cheap material having a low heat resistant temperature.

[0005]

Generally, in a microwave oven capable of performing microwave heating and oven heating,
The cooling fan is driven to cool the magnetron, and is stopped when the oven is heated.

That is, the amount of hot air flowing out from the gap between the door and the main body is small, the heat in the heating chamber is transmitted to the door, the operation panel is heated by the heat radiated from the door, and the temperature of the operation panel rises.

Therefore, in the prior art, the cooling air from the cooling fan prevents the operation panel from being heated by the hot air flowing through the gap between the main body and the door. If stopped, cooling air will stop flowing. When the cooling air stops flowing,
The hot air in the heating chamber leaks through the gap between the door and the heating chamber and hits the operation panel, or the door is heated by the hot air in the heating chamber and the operation panel is heated by the heat radiated from the door. The temperature of the panel may rise and the operation panel may be deformed or discolored.

Further, if fine food is caught in the gap formed between the door and the operation panel, the cooked food is heated by the hot air in the heating chamber, so that the temperature locally rises, and the temperature of that portion increases. The operation panel may also burn.

The present invention solves such a problem.

[0010]

A first means for solving the problems of the present invention is a housing for accommodating a heating chamber, and a door arranged on the front surface of the housing for opening and closing a front opening of the heating chamber. An operation panel that is disposed on the front surface of the housing and adjacent to the door and has a start button and the like; and a heat source that raises an ambient temperature in the heating chamber, the operation panel being adjacent to the door This is a configuration having a recess on the side surface.

The second means is such that the side wall of the recess is an inclined surface formed at an obtuse angle with respect to the bottom wall.

[0012]

In other words, since the concave portion is provided on the side surface which is close to the operation panel door, the width of the air layer in which the hot air in the heating chamber is transmitted can be increased. The temperature rise can be suppressed.

Also, by forming the side wall of the recessed portion into an inclined surface, it becomes easy to clean this portion, and it is possible to eliminate the remaining food.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIGS. 1 and 2, 1 is a microwave oven main body capable of being heated by an oven, 2 is an exterior, and 3 is a rear plate. The outer casing 2 and the rear plate 3 form a casing of the microwave oven.

Reference numeral 4 denotes a heating chamber arranged on the left side of the front of the housing, 5 denotes a door for opening and closing a front opening 4a of the heating chamber 4, and 6 denotes an electrical equipment room arranged on the right side of the front of the housing. Reference numerals 7 and 7 denote an operation panel having a display section 8 and a start button 9 which also serves as a cooking menu selection dial and a start button on the front surface thereof, and 10 denotes a control board disposed on the back side of the operation panel 7.

The electric equipment room 6 has a magnetron (not shown) and a high-voltage transformer (not shown) installed therein, and the control board 10 has a magnetron inside the electric equipment room 6 according to a signal from the start button 8. A control circuit for driving and controlling a heater, which will be described later, is mounted. Further, the door 5 has a handle 5a arranged on the operation panel 7 side, and an end portion 5b of the handle 5a is slightly projected from the door 5.

It should be noted that the door 5 and the operation panel 7 are arranged on the front surface of the casing as described above, and the operation panel 7 has a side surface 7a close to the right side of the door 5 when facing the front surface. Will be placed.

Reference numeral 11 denotes a side surface 7 of the operation panel 7 on the heating chamber 4 side.
The concave portion 12 provided in a is a side surface 7a outside the concave portion 11.
Is a stepped portion which is provided at the end and loosely fits with the end portion 15b of the handle 15.

Each side wall of the concave portion 11 is not perpendicular to the bottom wall 11a but is inclined so as to form an obtuse angle, and even if fine food is stuck in the concave portion 11, a cloth or the like may be formed. To make it easier to blow.

Reference numeral 13 is a turntable for placing food on the bottom of the heating chamber 4, and 14 is a heater placed on the bottom wall of the heating chamber 4, which serves as a heat source for raising the ambient temperature of the heating chamber 4.

The operation of the microwave oven having such a structure is performed in the heating chamber 4
After the food is stored inside and the door 5 is closed, the start button 9 is rotated to select the oven cooking and its set temperature and time. When the start button 9 is pressed, the heater 14 is energized to start cooking. Oven cooking is performed by heating the heating chamber to a set temperature and continuing it for a set time. When the oven cooking is completed, a buzzer (not shown) is sounded to notify the user of the completion.

During this oven cooking, hot air in the heating chamber 4 leaks from the gap between the wall of the heating chamber 4 and the door 5 (arrow A in FIG. 2), and the heat in the heating chamber 4 is transmitted to the door 5. The heat is radiated toward the operation panel 7 (see FIG. 2).
Inside arrow B).

However, since the concave portion 11 is provided on the side surface 7a of the operation panel 7 adjacent to the door 5, the air layer between the door 5 and the side surface 7a is widened, and the heat insulating effect is enhanced. Therefore, the temperature rise of the operation panel 7 is caused by the recess 1
This is lower than when 1 is not provided.

By providing the recessed portion 11, a thick portion is provided on a part of the side surface 7a of the operation panel 7,
The side surface 7a is reinforced and acts so as to be strong against deformation due to heat.

Actually, when the side surface 7a of the operation panel 7 is not provided with the recess 11, the side surface 7a of the operation panel 7 is used.
The temperature of 110 ° C was 110 ° C.
It can be kept at 05 ℃. Therefore, the material of the operation panel 7 is
ABS (acrylonitrile.
Butadiene / styrene-based resin) can be used for ABS having a heat resistant temperature of 115 ° C., and accordingly, cheap ABS can be used, contributing to cost reduction.

From the above, in the conventional structure in which the recess 11 is not provided, the gap between the side surface 7a of the operation panel 7 when the door 5 is closed is about 1 mm to 2 mm, but the recess 11 is provided. Then, further increase by 1 mm to 2 mm,
That is, the gap between the door 5 and the side surface 7a of the operation panel 7 is approximately 2 m.
It is intended to be expanded to m to 4 mm. By doing so, the air layer provided between the door 5 and the operation panel 7 can be enlarged, and the heat insulating effect can be enhanced accordingly.

Further, since the side walls of the recess 11 are inclined, even if fine food is stuck, it can be easily wiped off with a cloth or the like.

The end portion 15b of the handle 15 of the door 5 and the step portion 12 of the operation panel 7 are loosely fitted in order to hide the gap between the door 5 and the operation panel 7.

[0029]

According to the present invention, since the concave portion is provided on the side surface of the operation panel on the door side, the temperature rise of the operation panel can be suppressed, and the deformation and discoloration of the operation panel can be prevented.
Since the temperature rise of the operation panel can be suppressed, the material of the operation panel can be replaced with a material having a low heat resistant temperature, which contributes to cost reduction.

[Brief description of drawings]

FIG. 1 is an external view of a microwave oven.

FIG. 2 is a horizontal sectional view of the microwave oven of FIG.

[Explanation of symbols]

 1 Microwave Oven Main Body 2 Exterior 4 Heating Chamber 5 Door 7 Operation Panel 11 Recess 11a Bottom Wall

Claims (2)

[Claims] 1. A housing for accommodating a heating chamber, a door for opening and closing a front opening of the heating chamber arranged on the front surface of the housing, a front button of the housing and adjacent to the door, and a start button. A cooking device comprising: an operation panel having the above, and a heat source for increasing an ambient temperature in the heating chamber, wherein the operation panel has a recess on a side surface adjacent to the door. 2. The cooker according to claim 1, wherein the side wall of the recess is a slope formed at an obtuse angle with respect to the bottom wall.