JPH0665132B2 - Induction heating cooker - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an induction heating cooker in which internal parts are cooled by a cooling fan.

2. Description of the Related Art Conventionally, in this type of induction heating cooker, as shown in FIGS. 4 and 5, the temperature of the internal electronic circuit 1 is affected by the heat generated by the heating coil 2 and the cooking pot 3. In order to prevent the temperature from rising above the allowable value, a cooling fan 4 is provided inside. By the way, the cooling air from the cooling fan 4 is sucked in through the intake port 5 and flows toward the exhaust port 6, but a part of the cooling air flows through the cooking plate 7 and the heating coil 2.
Flow through the voids and cool. This method is often adopted because it has a very good cooling property for cooling the radiant heat from the cooking pot 3 and the self-heating of the heating coil.

The problem to be solved by the invention is that, in the configuration described above, as the size and thickness of the device are reduced, the component density increases, and the exhaust area decreases. If the cooling air that flows through the gaps in the cooking plate 7 is less likely to disperse in the surroundings, and is exhausted in a high temperature state, and if this high temperature exhausted air is discharged to the outside of the device, it may cause discomfort to the user, This causes problems such as thermal deformation of articles around the equipment, such as table cloths and plastic containers.

Means for Solving the Problems The present invention is to solve the above-mentioned problems, and a cooling air flowing between the cooking plate and the heating coil is provided between the cooking plate outside the heating coil and the heating coil. Is provided with a cooling air guide for guiding the control device to the downstream side of the cooling air for cooling and mixing the both cooling air.

By the above means, the high-temperature cooling air that has cooled the heating coil and the cooking plate is guided to the downstream side of the low-temperature cooling air that has cooled the control device by the cooling air guide, and mixed to become a relatively low-temperature cooling air and exhausted. Exhausted from the mouth.

Embodiment An embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 8 is a main body case of the cooker, and the upper surface is combined with the cooking plate 9 and the lower surface is combined with the main body bottom plate 10. Below the cooking plate 9, a heating coil 11, a cooling fan 12, and a control device 13 that controls the heating coil 11 are arranged.
An intake port 14 is provided on the lower surface of the cooling fan 11, and an exhaust port 15 is provided in the main body case 8 across the heating coil 11. Between the cooking plate 9 outside the heating coil 11 and the heating coil 11, an elastic arc-shaped cooling air guide 16 made of silicon rubber for guiding the cooling air from the cooling fan 12 is provided. There is. The upper surface of the cooling air guide 16 is in contact with the back surface of the cooking plate 9,
The passage of the cooling air 17 flowing through the ventilation passage 21 between the heating coil 11 and the cooking plate 9 to the rear of the cooling air 17 is blocked, and the flow is led to the downstream of the cooling air 18 that cools the control device 13, and is directly supplied from the cooling fan 12. The length is determined so that it is mixed with the low-temperature cooling air 18 flowing to the control device 13. 19 is a heating coil support. A cooking pot 20 is placed on the cooking plate 9.

In the above structure, the cooling air sucked from the intake port 14 flows toward the ventilation passage 21 between the heating coil 11 and the cooking plate 9 and the control device 13 by the rotation of the cooling fan 12 to cool each component. After that, it is discharged from the exhaust port 15. By the way, the cooling air 17 flowing through the ventilation passage 21 takes away the radiant heat of the cooking plate 9 heated by the hot-cooking cooking pot 20 due to the self-heating of the heating coil 11, but the cooling air guide 16 changes its flow direction. Control device 1
It flows to the downstream of the cooling air 18 for cooling 3. Then, the cooling air 17 whose temperature has risen in the ventilation passage 21 is mixed with the low-temperature cooling air 18 which has cooled the control device 13 to lower the temperature.

That is, the high temperature cooling air 17 flowing through the ventilation passage 21 is prevented from being directly discharged to the outside of the device due to the presence of the cooling air guide 16, and is mixed with the low temperature cooling air 18 to become a relatively low temperature cooling air. Will be discharged outside the equipment.

Further, in this embodiment, a guide 22 having the same function as the cooling air guide 16 is integrally provided on the coil support 19 below the cooling air guide 16 in order to further reduce the temperature of the exhaust air.

EFFECTS OF THE INVENTION As is clear from the above description of the embodiments, according to the present invention, the high temperature cooling air for cooling the heating coil and the cooking plate is guided to the downstream side of the cooling air for cooling the control device with the cooling air guide, The temperature of the exhaust gas can be lowered by mixing the control device with the cooled low-temperature cooling air to make it a relatively low-temperature cooling air and discharging it to the outside of the equipment. The effect of eliminating the pleasant sensation and preventing thermal damage to the peripheral products such as table materials and table cloths can be obtained.

[Brief description of drawings]

FIG. 1 is a plan sectional view showing an embodiment of the present invention, FIG. 2 is a side sectional view of the same, FIG. 3 is a perspective view of relevant parts, and FIG. 4 is a plan sectional view showing a conventional example. [Fig. 4] is a side sectional view of the conventional example. 11 ... Heating coil, 12 ... Cooling fan, 13 ... Control device, 16 ... Guide.

Claims (1)

[Claims] 1. A cooking plate on which an object to be heated is placed, a heating coil disposed below the cooking plate for induction heating the object to be heated, a control device for controlling the heating coil, and the heating coil. A cooling fan for cooling the control device; and a cooling air flowing between the cooking plate and the heating coil between the cooking plate and the heating coil outside the heating coil. An induction heating cooker, characterized in that a cooling air guide is provided for guiding the cooling air to the downstream side of the cooling air to mix the two cooling air.