KR100293695B1 - A radiant heating structure for a electric cooker - Google Patents

Abstract

The present invention relates to a heat dissipation structure of an electric rice cooker capable of miniaturizing an electric rice cooker by minimizing an installation space of a controller plate and improving cooling efficiency; A heat sink that absorbs heat so that the electronic component mounted on the controller board outputting a control signal required for the operation of the rice cooker maintains a proper temperature, a blower fan that sucks external cold air into the rice cooker, and And an air guide for guiding the cold air sucked by the blowing fan to the control plate portion and the heat sink, wherein the heat sink is disposed vertically with respect to the control plate portion whose bottom surface is vertically mounted inside the electric rice cooker. It is characterized in that it is disposed to face the electronic component mounted on the control panel. In this case, the guide partition wall is formed in the air guide to distinguish the air flow for cooling the heat sink and the air flow for cooling the electronic components of the controller plate.

Description

A radiant heating structure for a electric cooker}

The present invention relates to a heat dissipation structure of an electric rice cooker for performing cooling of a control plate for providing a control signal to an electric rice cooker of induction heating method, in particular, a heat for cooling to efficiently cool high heating elements such as switching elements and capacitors. It relates to a heat dissipation structure of an electric rice cooker with improved sink installation method and air flow path.

1 is a cross-sectional view schematically showing the configuration of an electric rice cooker according to the prior art, Figure 2 is a cross-sectional view A-A of FIG.

1 and 2, an oven 2 detachably mounted in which food is contained and cooked inside the main body 1 that protects internal circuits and components while forming the external shape of the system is detachably mounted. One side is attached to (1) to cover the upper portion of the oven (2) is opened and closed operation by the user. In addition, an operation unit 4 is formed at a predetermined outside area of the main body 1 and has a plurality of function selection keys formed thereon to support a user to arbitrarily select a start of cooking, a cooking time, and a cooking method of the food. When the user instructs the start of cooking through the operation unit 4, the coil heating unit 5 provides a predetermined pressure and cooking heat for cooking the food.

1 and 2, reference numeral 11 denotes a controller plate portion for outputting a control signal for controlling the operation of the electric rice cooker, 12 denotes a switching element mounted on the controller plate portion 11, and 13 denotes the controller plate portion ( The capacitor mounted in 11) is shown.

In addition, reference numeral 21 denotes a heat sink for absorbing and dissipating heat generated from the switching element 12 and the condenser 13 mounted on the controller plate 11 during operation of the rice cooker. , 22 represents a blowing fan for sucking the cold air outside the rice cooker inside, 23 is an air guide for guiding the cold air sucked into the inside by the blowing fan 22 to the heat sink 21. (air guide), 24 denotes an exhaust port for discharging the hot air to the outside while passing through the heat sink 21.

As a result, in the conventional electric rice cooker, in order to cool the high heat-generating electronic components, the external cold air flows to the internal heat sink 21 by the blower fan 22 and the air guide 23 and is forced by the convective heat transfer action. The heat sink 21 is cooled to have a structure.

However, in the conventional technology as described above, the bottom surface of the heat sink, which is a junction portion between the heat sink and the switching element, is installed in parallel with the controller plate portion, and the controller plate portion is vertically installed in the inside of the rice cooker. It is difficult to install other electrical and electronic components in the volume space of the control panel, which causes a problem that the area of the control panel becomes large.

In addition, since the heat sink is installed vertically inside the electric rice cooker, a problem arises in that a space for installing the controller plate between the oven and the main body is required, and the cool air introduced into the inside of the air guide by the blowing fan Since it flows along, there arises a problem that the cooling efficiency for the cooling fins in the vertical direction of the heat sink is lowered.

In addition, due to the increase in the area and the installation space of the control panel portion as described above, there is a problem that becomes a factor that inhibits the miniaturization and lightweight of the rice cooker.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and its object is to mount the heat sink vertically on the control plate to enable the mounting of the electronic board in the space between the main body and the oven. It is to provide a heat dissipation structure of the electric rice cooker to minimize the space to achieve the miniaturization of the electric rice cooker.

In addition, the present invention provides a heat dissipation structure of an electric rice cooker that can improve cooling efficiency by installing a guide partition wall for separately forming an air flow for cooling a heat sink and an air flow for cooling an electronic component.

1 is a cross-sectional view showing the configuration of an electric rice cooker according to the prior art,

2 is a cross-sectional view taken along line A-A of FIG.

3 is a cross-sectional view showing the configuration of an electric rice cooker according to the present invention;

4 is a cross-sectional view taken along line B-B of FIG.

Figure 5 (A) and (B) is a view showing an embodiment of the mounting structure of the bottom surface and the cooling fin in the heat sink according to the present invention.

<Explanation of symbols about main parts of drawing>

111: controller plate 112: switching element

113 condenser 121 heat sink

122: blowing fan 123: air guide

124 exhaust port 125 guide bulkhead

According to the present invention for achieving the above object, a heat sink for absorbing heat so that the electronic component mounted on the controller plate for outputting a control signal required for the operation of the rice cooker to maintain a proper temperature, and the outside cold air In the heat dissipation structure of the rice cooker including a blowing fan for sucking into the inside of the rice cooker, and an air guide for guiding the cold air sucked by the blowing fan to the control panel and the heat sink,

The heat sink provides a heat dissipation structure of the electric rice cooker, the bottom surface of which is disposed perpendicular to the control plate mounted vertically in the interior of the rice cooker and facing the electronic components mounted on the control board. do.

At this time, according to an additional feature of the present invention, the air guide is formed in the air guide for partitioning the air flow for cooling the heat sink and the air flow for cooling the electronic components of the control panel.

In addition, the heat sink is provided with its cooling fins vertically or parallel to the controller plate portion, and in the case of parallel heat sinks, a plurality of gaps are formed in each of the cooling fins to facilitate airflow.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the heat radiation structure of the electric rice cooker according to the present invention will be described in detail.

3 is a cross-sectional view showing the configuration of the rice cooker according to the present invention, Figure 4 is a cross-sectional view B-B of FIG.

3 and 4, reference numeral 111 denotes a controller plate outputting a control signal for controlling the operation of the electric rice cooker, 112 denotes a switching element mounted on the controller plate 111, and 113 denotes the controller. The capacitor mounted in the plate part 11 is shown. That is, the switching element 112 and the capacitor 113 represent a high heat generating element.

In addition, reference numeral 121 denotes a heat sink for absorbing and dissipating heat generated by the switching element 112 mounted on the controller plate 111 during the operation of the rice cooker, 122 is an electric rice cooker. A blow fan (fan) for sucking the outside cold air to the inside, 123 is the air for guiding the cold air sucked into the inside by the blowing fan 122 to the heat sink 121 and the control panel 111. A guide (air guide), 124 represents an exhaust port for discharging the hot air to the outside while passing through the heat sink 121, 125 is formed in the air guide 123 and the heat sink 121 ) And a guide partition wall for distinguishing the air flow guided to the controller plate 111.

In the heat sink 121, as shown in (A) and (B) of FIG. 5, the bottom surface 121A is disposed to face high heat generating electronic components such as the switching element 112, and the bottom surface of the heat sink 121 is cooled. The pin 121B is installed perpendicularly or parallel to the control board portion 111. In this case, in the case of parallel, a plurality of gaps 121C may be formed in each cooling fin to facilitate air flow.

As a result, the heat dissipation structure of the electric rice cooker according to the present invention arranges the heat sink 121 vertically with respect to the controller plate portion 111 and mounts the high heat generating electronic components 112 and 113 to face the heat sink 121. The space between (111) and the oven was minimized.

In addition, the cooling efficiency is improved by classifying the upper flow to cool the heat sink 121 by using the guide partition wall 125 and the lower flow to cool the high heat generating electronic components 112 and 113 mounted on the controller plate 111. I was.

The heat dissipation structure of the electric rice cooker of the present invention as described above can achieve the miniaturization of the electric rice cooker by minimizing the area and the installation space of the controller plate, there is an effect that can lower the price of the product due to the reduction of material costs.

In addition, there is an effect that can maximize the cooling efficiency by adjusting the amount of air flowing into the heat sink and electronic components.

Claims (3)

A heat sink that absorbs heat so that the electronic component mounted on the controller board outputting a control signal required for the operation of the rice cooker maintains a proper temperature, a blower fan that sucks external cold air into the rice cooker, and In the heat dissipation structure of the rice cooker including an air guide for guiding the cold air sucked by the blowing fan to the control panel and the heat sink, The heat sink is a heat dissipation structure of the electric rice cooker, the bottom surface of which is disposed perpendicular to the control board mounted vertically mounted in the interior of the rice cooker and facing the electronic components mounted on the control board. The method of claim 1, The air guide has a heat dissipation structure of the electric rice cooker, characterized in that the guide partition is divided into the air flow for cooling the heat sink and the air flow for cooling the electronic components of the control panel. The method of claim 1, The heat sink is a heat dissipation structure of the electric rice cooker, characterized in that the cooling fins are installed vertically or parallel to the control plate, and in the case of parallel the plurality of gaps are formed in each cooling fin to facilitate the air flow.