JPH03114177A - Induction heating cooking apparatus - Google Patents

Abstract

PURPOSE:To reduce the man-hours for design and suppress the cost for product by providing an induction heating coil, a control circuit, and a heat sink to cool its switching element in a body. CONSTITUTION:Heat sinks 14a, 14b, 14c to which switching elements for control circuits 15a, 15b, 15c are fixed, are installed ahead the control circuits, and a cooling fan 12 is installed ahead the het sinks. Current is fed to an induction heating coil 5 to heat up a pan, heat emitting parts of each control circuit 15a..., particularly transistors 16a..., run temperature, but sufficient cooling is obtained because the wind from the cooling fan 12 runs first against the heat sinks 14a... to which the transistors are fixed. Also because the control circuits 15a... and heat sink 14a... induction heating coils 5a... are put together in one set, the design of induction heating cooling apparatus with different man-hours can be well responded to by adjusting the number of units of this set.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an induction cooking device that utilizes electromagnetic induction heating.

BACKGROUND ART Conventionally, heating cookers using electromagnetic induction have been designed in accordance with pre-planned specifications, such as 10 for 10 and 20 for 20.

Problems to be Solved by the Invention However, with such a configuration, it is difficult to design an induction heating cooker with a different number of mouths or an induction heating cooker that is combined with other heating means such as a nichrome heater. However, there was a problem in that it required too much design man-hours. In addition, in the case of repairs, etc., there was a problem that it took time to find the faulty part, replace parts, etc. 1゜The present invention solves the conventional problems, has a large degree of freedom in design, and is easy to repair. The purpose of the present invention is to provide an induction heating cooker with good performance.

Means for Solving the Problems In order to achieve the above object, the technical means of the present invention is to have at least one induction heating coil on the upper part of the main body, and to have a control circuit for driving the induction heating coil in a number corresponding to the number of induction heating coils. A heat sink to which the switching elements of the control circuit are fixed is fixed in front of each control circuit, and a cooling fan is provided in front of the heat sink.

Function: With this technical means, the induction heating coil, the control circuit, and the heat sink that cools the transistors of the control circuit are integrated, so the control circuit and the heat sink can be adjusted according to the number of induction heating units, that is, the number of induction heating coils. All you need to do is provide a heat sink, and with a slight design change, it can be used with a variety of models. In addition, the parts are independent for each opening, making it easy to find repair points and replace parts.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a heating cooker according to an embodiment of the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is a plan view showing the inside of the lower main body.

In the figure, 1 is the upper body. 2 is the large surface of the kitchen furniture that supports the upper body 1. 3 is a heat-resistant cooking plate, which is fixed by an outer frame 4. 5a, 6b, 5
An induction heating coil c is provided under the cooking plate 3, and a pot (not shown) placed on the cooking plate 3 is heated by electromagnetic induction. Reference numeral 6 denotes a pufferfish IJ), which is provided at the rear of the upper body 1, and an exhaust lower for exhausting air is provided on the upper surface of the pufferfish IJ) 6. 8 is the lower body. 9 is the lower body 8
This is the frame of kitchen furniture that supports the Reference numeral 10 denotes an air intake port provided on the front surface of the lower body 8, and an operation unit/display unit 11 is provided below the air intake port 10. 12 is a cooling fan consisting of, for example, a cross flow fan, and is connected to the intake port 1 of the lower body 8.
It is provided near o.

Cooling fan 12 is driven by motor 13 .

14a, 14b, and 14c are heat sinks having cooling fins, and are attached in parallel to the air blowing side of the cooling fan 12. 15a, 16b, 15c are induction heating coils 5a
, 5b, 5c to generate a magnetic field by sending electricity to the heat sinks 14a, 14b, 14c.
It is electrically connected to the rear of the In other words, the control circuit 15a includes a transistor 16a and a diode 17a, which are switching elements that require cooling.
However, these have a control circuit 15 on the heat sink 14a.
It is pulled out from a and fixed with a connecting cord 18a. In this embodiment, since each of the 15 control circuits includes two transistors 16 and two diodes 17, one control circuit 16 and two heat sinks 14 are combined.

Note that each control circuit 16 is electrically connected to the operation section/display section 11. Boards 19a, 19b, and 19c fix the heat sink 14 and control circuit 16 in the negative set, and are attached to the lower body 8. Connection cords 20a, 20b, and 20C electrically connect the control circuits 14a, 14b, and 14c to the induction heating coils 5a, 5b, and 5c, respectively.

The operation of the heating cooker configured as above will be described below.

When a pot is placed on the cooking plate 3 and an operation is performed to heat the pot from the operation/display section 11, the cooling fan 12 rotates, and as shown in FIG. The heat sinks 14 are cooled from the fan 12 as shown by the arrow C, each control circuit 15 is cooled as shown by the arrow C, and the air is exhausted from the exhaust lower of the pasque grille 6.

As a result, when the induction heating coil 5 is energized and the pot is heated, the heat-generating components of the control circuit 16, especially the transistor 16, generate heat, but the air from the cooling fan 12 blows onto the heat sink 14 that fixes the transistor 16. Since it hits first, it can cool down sufficiently.

Of course, the wind after cooling the heat sink 14 is the control circuit 1.
6, so other heat generating parts can also be cooled.

In addition, since the control circuit 15, heat sink 14, and induction heating coil 6 are assembled into a set, induction heating cookers with different numbers of units can be easily designed by adjusting the number of units in the set. I can handle it. For example, in this embodiment, the number of units is 30, but when changing this to 20, the number of units may be reduced by - to make two units. Furthermore, when adding heating means other than induction heating (for example, a nichrome heater), the number of sets can be similarly reduced by that amount, and the control circuit for the other heating means can be inserted into the empty space. At this time, the range to which the cooling air is applied naturally changes, but since a cross-flow fan is used as the cooling fan 12 in this embodiment, there is an advantage that this can be easily handled by changing the length of the horizontally long fan. Furthermore, in the case of repairs, etc., parts are assembled in groups of 10, and the wiring within each group is well-organized, making it easy to find the failure location.
Easy to replace parts. In particular, the heat sink 14 and the control circuit 15 are fixed on a board 19 so that they can be assembled and removed as a pair.Although this embodiment uses a 30 induction heating cooker, it is possible to change the number of ports or use other heating methods. Of course, it is possible to incorporate a heating chamber such as a roaster into the main body, and in short, the cooling fan 12, the heat sink 14, and the control circuit 16 are arranged in a row.The heat sink 14, the control circuit 16, and the induction heating coil 6 It is sufficient that at least 10 induction heating means have a configuration including a set of . Further, although a cross flow fan is used as the cooling fan 12 in this embodiment, the type of fan may be different, such as a propeller fan or the like. Further, in this embodiment, the heat sink 14 and the control circuit 16 are fixed with the substrate 19 interposed therebetween, but they may be fixed directly to the lower body 8.

Further, in this embodiment, the main body is divided into an upper main body 1 and a lower main body 8, but they may all be incorporated into one main body.

Effects of the Invention As described above, the induction heating cooker of the present invention has at least one induction heating coil on the upper part of the main body, and a control circuit for driving the induction heating coil is provided in the main body in a number corresponding to the number of induction heating coils. By fixing heat sinks to which transistors of the control circuit are fixed in front of the control circuit, and further providing a cooling fan in front of the heat sinks, the induction heating coil, the control circuit, and the heat sink that cools the switching elements of the control circuit can be connected. Since it is integrated, you only need to install the control circuit and heat sink according to the number of induction heating coils, and it can be adapted to various models with just a slight design change, reducing design man-hours. and can lower the product unit price. In addition, the parts are independent for each opening, which makes it easy to assemble, and it is easy to find repair parts and replace parts, which makes it easy to service.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an induction heating cooker according to an embodiment of the present invention, FIG. 2 is a sectional view of the main part thereof, and FIG. 3 is a plan view of the lower main body. 1... Upper body, 5a, 5b, 5c...
Induction heating coil, 8...Lower body, 12...
・・Cooling fan, 14a, 14b, 14cm・
...Heat sink, 15a. 15 b, 15 c--control circuit, 18a, 16
b. 16c...transistor.

Claims (1)

[Claims] At least one induction heating coil is provided in the upper part of the main body, control circuits for driving this induction heating coil are provided in the main body in a number corresponding to the number of induction heating coils, and a heat sink to which a switching element of the control circuit is fixed is provided in the control circuit. An induction heating cooker with a cooling fan installed in front of the heat sink.