JPH0578322B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cooking appliance such as a rice cooker used in general households.

BACKGROUND TECHNOLOGY In a conventional cooker of this kind, for example, as shown in Japanese Patent Application Laid-Open No. 119911/1980, there is a method of suppressing the temperature rise of a control circuit disposed in a display panel, as shown in FIG. I had a cooker with the configuration shown in the figure below.

In this figure 4, 1 is the main body, 2 is the heating element 3
4 is a pot, and 5 is a display board attached to the side of the main body 1. Inside this display board 4, a control circuit 6 and a heat shield plate 7 are incorporated. ing. 8 is a ventilation hole provided at the upper end of the protective frame 2; 9 is a ventilation hole provided at the bottom of the display board 5; 10 is a ventilation hole provided at the bottom of the display board 5;
is a ventilation hole provided at the bottom of the main body 1. These ventilation holes 8, 9, and 10 create a flow of air on the back side of the display panel 5, allowing hot air from the heat insulator 3 to escape, thereby reducing the influence of heat on the control circuit 6.

Problems to be Solved by the Invention However, with such a structure, if an insulating material such as glass wool is disposed between the main body 1 and the protective frame 2 to improve the heat retention performance of the pot 4. However, there is a problem in that the air heated by the heating element 3 is blocked by the heat insulating material, and the control circuit 6, which has a low allowable temperature limit, may be heated to a temperature higher than the allowable temperature limit.

The present invention solves these problems,
The purpose of the present invention is to provide a cooker that can protect a control circuit with low heat resistance built into a display board from heat even in a cooker using a heat insulating material such as a heat-retaining rice cooker.

Means for Solving the Problems In order to solve the above problems, the present invention includes a main body having a display board on the side surface, a main body provided within the main body,
and a protective frame that supports a heating element, an upper frame to which the protective frame and the main body are fixed via a heat insulating material, and a control circuit disposed within the display board, the control circuit and the A heat shield for providing a ventilation path discontinuous with the heating element space between the protective frame and the ventilation hole formed in the lower part of the display board and the ventilation hole formed in the side surface of the upper frame. It is made up of plates.

Effect According to the above configuration, the ventilation hole formed on the side surface of the upper frame that fixes the main body and the protection frame and the ventilation hole formed on the lower part of the display board are connected to the heat shield plate provided on the back side of the control circuit. The heat insulating material is pressed against the protective frame side and communicates with the heating element space by forming a discontinuous air passage, so outside air is taken in through the ventilation hole formed at the bottom of the display board and flows to the side of the upper frame. It is possible to escape to the outside of the vessel through the formed ventilation hole, and as a result,
Since the heat generated by the control circuit itself and the heat conducted to the control circuit side through the heat insulating material are cooled by the above-mentioned air circulation, overheating of the control circuit is prevented, and a cooking device without malfunctions or breakdowns can be obtained. I can do it.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings.

In FIGS. 1 to 3, 11 is the main body, 12 is a bottomed cylindrical protective frame that supports the heating element 13 for cooking, 14 is an upper frame that fixes the main body 11 and the protective frame 12, and 15 is the main body. A display board 15 is attached to the side of the display board 11, and a control circuit 16 incorporating operation switches and the like is disposed on the display board 15. 17 is a cover that covers the control circuit 16; 18 is the main body 11 and the protective frame 1;
A heat insulating material 19 made of glass wool formed into a cylindrical shape is placed between the display board 15 and the display board 15. An air passage is formed on the side surface of the cover 17 covering the control circuit 16 by locally pushing aside the heat insulating material 18 on the back surface of the control circuit 16 .

20 is a pot that is removably placed on the heating element 13; 21 is an inner lid; 22 is a heat-retaining heat sink provided with a lid heater 23; 24 is an outer lid; and 25 is a heat sink 22.
and the outer cover 24, 26 is a ventilation hole formed at the bottom of the display board 15, and 27
are ventilation holes formed on the side surface of the upper frame 14 located above the display panel 15, and these ventilation holes 26 and 27 are communicated with air passages on the side surface of the cover 17 formed by the heat shield plate 19, respectively. At the same time, it is provided discontinuously with the space of the heating element 13. Therefore, outside air is taken in through the ventilation hole 26 at the bottom of the display board 15 as shown by the arrow in FIG. Can be cooled. 28
is a protective heater wrapped around the protective frame 12.

Effects of the Invention As described above, according to the present invention, even when a heat insulating material is disposed between the main body and the protective frame to improve heat retention performance, the surroundings of the control circuit built into the display board can be A heat shield plate placed between the control circuit and the protection frame provides ventilation, and since it is discontinuous with the heating element space, it is possible to prevent the effects of convection of heated air, and to prevent the control circuit from being affected by convection. It becomes possible to suppress temperature rise, and as a result, malfunctions and failures can be prevented. Furthermore, since the container body can be made more compact, it is possible to improve usability and design.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway sectional view of a cooking device showing an embodiment of the present invention, FIG. 2 is a front view of the cooking device, and FIG. 3 is a partially cutaway view of the components of the cooking device. FIG. 4 is a sectional view of a main part of a conventional cooking device. 11...Main body, 12...Protection frame, 13...Heating element, 1
4... Upper frame, 15... Display board, 16... Control circuit, 18
...insulation material, 19...heat shield plate, 20...pan, 26,27
...vents.

Claims (1)

[Claims] 1. A main body having a display board on its side, a protective frame provided within the main body and supporting the heating element, an upper frame fixing the protective frame and the main body, and a frame placed on the heating element. a pot, a control circuit disposed within the display board, and a heat insulating material interposed between the main body and the protection frame, and a lower part of the display board between the control circuit and the protection frame. The cooking appliance is provided with a heat shield plate for providing an air passage discontinuous with the heating element space, which communicates the ventilation hole formed in the upper frame with the ventilation hole formed in the side surface of the upper frame.