JP4020610B2 - Induction heating cooker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an induction heating cooker.
[0002]
[Prior art]
In the conventional induction heating cooker, the main heating means is a heating coil, and the magnetic flux generated thereby generates an eddy current in a heated object such as an iron pan placed on an insulating plate, and the heated object. Is to heat. Some other heating means use a radiant heater or the like. This cooker has less heat radiation to the object other than the object to be heated and has good thermal efficiency as compared to a cooker of combustion system such as gas.
[0003]
In terms of configuration, an insulating plate on which an object to be heated is placed on the upper surface of the main body, a heating means, an output control board, etc., and a cooling fan for cooling them are provided below the insulating plate , and the direction of exhaust is the main body Generally, the configuration is directed upward from the rear.
[0004]
As such conventional examples, there are those shown in Japanese Patent Laid-Open Nos. 2001-196153 and 2001-176651.
[0005]
An example of Japanese Patent Laid-Open No. 2001-196153 will be described with reference to FIGS. FIG. 5 is a cutaway plan view of a conventional induction heating cooker, and FIG. 6 is a side sectional view.
[0006]
In the figure, an insulating plate 2 on which an object to be heated (not shown) is placed on the upper surface of the main body 1, a plurality of heating means 9, 10 and two output control boards 11 below the insulating plate 2, A cooling fan 12 for cooling, an intake port 5 opened upward on the right side of the rear part of the main body 1, an exhaust port 6 opened upward on the left side of the rear part of the main body 1, and cooling inside the main body 1 from the intake port 5 An intake duct 18 reaching the fan 12 is provided.
[0007]
Then, a substrate cover 14 is provided so as to cover the upper output control board 11, an air passage is formed by the substrate holding base 17 and the substrate cover 14, and an operation to be a cooling air deflecting plate on the outlet side of the air passage. A rear wall 19 is provided, and a first opening 15 serving as a main vent is provided at a position before the rear end of the left heating means 9, and a second opening 16 following the right side is provided.
[0008]
The operation of the above configuration will be described.
[0009]
The outside air sucked from the intake port 5 by the cooling fan 12 reaches the cooling fan 12 through the intake duct 18, and further passes through the output control board 11 in the ventilation path formed by the board cover 14 and the board holding base 17. While cooling, the flow path is changed by the operation unit rear wall 19, most of which passes through the first opening 15 and the second opening 16 of the substrate cover 14, and the cooling air from the first opening 15 is left The cooling air flowing out from the second opening 16 flows through the heating means 9 to cool the right heating means 10, and is then discharged from the exhaust port 6 to the outside of the main body 1.
[0010]
By the way, in such an induction heating cooker, the main ventilation path is composed of a plurality of parts such as the intake duct 18, the substrate cover 14, the substrate holding base 17, and the operation portion rear wall 19 as described above. For this reason, there is a loss of cooling air, and it cannot be said that the cooling efficiency of the heating means 9 and 10 and the output control board 11 is sufficient. There is also a problem that it takes time to assemble.
[0011]
[Problems to be solved by the invention]
As described above, in the conventional induction heating cooker, the cooling efficiency of the heating means 9 and 10 and the output control board 11 is insufficient, and there is a problem in assemblability.
[0012]
An object of the present invention is to solve the above-described problems, and to reduce the loss of cooling air, improve the cooling efficiency of the heating means and the output control board, and improve the assembling property to reduce the cost. To do.
[0013]
[Means for Solving the Problems]
It is a feature of the present invention in order to achieve the above object, an insulating plate for placing an object to be heated on the upper surface of the main body is provided, and a plurality of heating means below the insulating plate, and an output control board, these In an induction heating cooker provided with a cooling fan for cooling the interior and provided with an intake port and an exhaust port opened upward at the rear of the main body, the output control board and the cooling fan are provided inside the main body. And a storage case made of resin whose side and upper part are closed, and the storage case includes a case inlet provided in the upper position corresponding to the inlet, and the upper part of the storage case and a plurality of cooling holes provided in position, said air passage is formed extending from the case inlet to said plurality of cooling holes in the housing case, the cooling fan upstream of該風Ro, downstream The output control board is arranged to absorb the case. The air sucked from the mouth is cooled from the plurality of cooling openings after cooling the output control board, and at least one of the plurality of heating means is disposed above the storage case, and Is disposed on the side of the heating means disposed above the storage case, and at least one of the plurality of cooling openings opens to cool the heating means above the storage case, and at least one is The heating means arranged on the side of the heating means arranged above the storage case is opened to cool.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, an insulating plate for placing an object to be heated is provided on the upper surface of the main body, a heating means, an output control board, and a cooling fan for cooling them are provided below the insulating plate, and the rear portion of the main body is moved upward. In an induction heating cooker provided with an intake port and an exhaust port that are opened toward the inside, a storage case made of resin is installed inside the main body, an output control board and a cooling fan are arranged inside the storage case, The upper part of the storage case is equipped with a case inlet corresponding to the intake port, the upper part of the storage case is equipped with a cooling port corresponding to the heating means, and an air passage is formed in the storage case from the case intake to the cooling port. It is a thing.
[0015]
Thereby, the loss of cooling air can be suppressed, the cooling efficiency of the heating means and the output control board can be improved, and the assemblability can be improved to reduce the cost.
[0016]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0017]
1 is an external perspective view of the present invention, FIG. 2 is an internal plan view of the present invention, FIG. 3 is a side sectional view of the present invention, and FIG. 4 is an external view of a storage case of the present invention.
[0018]
In the figure, 1 is the main body of the induction heating cooker. Reference numeral 2 denotes an insulating plate on which an object to be heated (not shown) such as an iron pan is placed, and is provided horizontally on the upper surface of the main body 1.
[0019]
Reference numerals 3 and 4 are heating units, which are two on the left and right sides, and are parts for heating the object to be heated (not shown).
[0020]
Reference numeral 5 denotes an air inlet, which is an opening opened upward at the rear part of the main body 1. Reference numeral 6 denotes an exhaust port, which is an opening that opens upward at the rear of the main body 1. In this embodiment, the intake port 5 is disposed on the right side of the rear portion of the main body 1 and the exhaust port 6 is disposed on the left side.
[0021]
Reference numeral 7 denotes a grill heating unit provided on the left side of the front surface of the main body 1 for grilling fish and the like. Reference numeral 8 denotes an operation unit provided at the right front portion of the main body 1 for setting and operating each heating.
[0022]
Reference numerals 9 and 10 denote heating means, which are provided below the insulating plate 2 in correspondence with the left and right heating units 3 and 4. In the case of a heating coil, a high-frequency current flows during induction heating and an object to be heated (not shown). In the case of a radiant heater, radiation is generated. Hereinafter, the heating means 9 and 10 will be described as heating coils.
[0023]
11 is the output control board, provided below the insulating plate 2, a circuit board including a control circuit for mainly controlling the output of the left and right heat hand stage 9, 10. A cooling fan 12 is provided below the insulating plate 2 and cools the heating means 9 and 10 and the output control board 11.
[0024]
Reference numeral 13 denotes a resin storage case as shown in FIG. 4, which is installed inside the main body 1, in which the output control board 11 and the cooling fan 12 are arranged, and a case intake port 13 a corresponding to the intake port 5 is disposed in the upper part. And the cooling means 13b and 13c corresponding to the heating means 9 and 10 are provided on the upper part. Furthermore, an air passage 13d that leads from the case intake port 13a to the cooling ports 13b and 13c is formed in the storage case 13.
[0025]
The case air inlet 13a is an opening that opens upward, and is configured to fit substantially inside the air inlet 5 at the rear of the main body 1. The case air inlet 13a is an air intake portion that is sucked into the case 13 by the cooling fan 12. .
[0026]
The first cooling port 13b is one of the openings from which the air blown from the cooling fan 12 is blown out from the storage case 13, and is substantially at the upper center of the storage case 13 so as to face the side of the corresponding heating means 9. The cooling air blown out and opened to the left is blown to the left heating means 9.
[0027]
The second cooling port 13c is another one of the openings from which the air blown from the cooling fan 12 is blown out from the storage case 13, and is located above the storage case 13 so as to face the side of the corresponding heating means 10. The cooling air blown out from the front side and opened rearward is blown to the right heating means 10.
[0028]
The operation of the above configuration will be described.
[0029]
When the user places an object to be heated (not shown) on the heating unit 3 or 4 of the insulating plate 2, operates the operation unit 8, sets and starts cooking, the output control board 11 is heated by the heating unit 3. Alternatively, a control signal is output to the heating means 9 or 10 below 4. By this control signal, the heating means 9 or 10 generates a magnetic flux by flowing a high-frequency current therein, and an eddy current flows through the object to be heated (not shown) by this magnetic flux, and the object to be heated (not shown) itself Exothermic and heated.
[0030]
When cooking is started, simultaneously, the output control board 11 outputs a control signal to the cooling fan 12, and the cooling fan 12 is driven by this control signal, sucks outside air from the case inlet 13 a, and blows air forward. Do.
[0031]
The air blown by the cooling fan 12 is blown to the output control board 11 disposed downstream of the cooling air inside the storage case 13 to cool it. A part of the cooling air cools a part of the output control board 11, passes through the first cooling port 13 b opened toward the left at the upper center of the storage case 13, and its direction is substantially horizontal left. Instead, it is blown to the side of the left heating means 9 to be cooled, and then discharged from the exhaust port 6 to the outside of the main body 1.
[0032]
The other part of the cooling air passes through the output control board 11, faces upward along the front wall surface of the storage case 13, passes through the cooling port 13 c opened rearward on the upper front side of the storage case 13, The direction is changed to a substantially horizontal rear, blown to the side of the right heating means 10 and cooled, and then discharged from the exhaust port 6 to the outside of the main body 1.
[0033]
During cooking, the cooling operation is performed as described above. When cooking is finished, the output control board 11 stops outputting the control signal, and stops the operation of the heating means 9 or 10 and the cooling fan 12.
[0034]
As described above, the air passage 13d that leads from the case intake port 13a that is the intake portion of the outside air to the cooling ports 13b and 13c that are the discharge portion is composed of the integral resin storage case 13, and this storage case. 13, the output control board 11 and the cooling fan 12 are arranged, so that the cooling of the output control board 11 has no cooling air loss and high cooling efficiency.
[0035]
Further, by providing the first and second cooling ports 13b and 13c so as to face the side portions of the corresponding heating means 9 and 10, dispersion of the cooling air blown out from these is suppressed, and each heating means 9 is concentrated. Therefore, the cooling of the left and right heating means 9 and 10 is extremely high in cooling efficiency.
[0036]
In the above embodiment, two heating means 9 and 10 have been described. However, in the case of three or more heating units, the number and positions of the cooling ports 13b and 13c provided in the storage case 13 are similarly heated. What is necessary is just to provide suitably according to the number and position of the means 9 and 10.
[0037]
Moreover, although the heating means 9 and 10 were demonstrated as a heating coil in the above description, it can respond even if it combines a radial heater and others.
[0038]
【The invention's effect】
As described above, according to the induction heating cooker of the present invention, the resin storage case is installed inside the main body, the output control board and the cooling fan are arranged inside the storage case, and the upper part of the storage case The case is provided with a case intake corresponding to the intake, a cooling port corresponding to the heating means is provided at the top of the storage case, and an air passage leading from the case intake to the cooling opening is formed in the storage case. By suppressing the loss of wind, the cooling efficiency of the heating means and the output control board can be improved, and the assemblability can be improved to reduce the cost.
[Brief description of the drawings]
FIG. 1 is an external perspective view of the present invention.
FIG. 2 is an internal plan view of the present invention.
FIG. 3 is a side sectional view of the present invention.
FIG. 4 is an external view of a storage case according to the present invention.
FIG. 5 is a cutaway plan view of a conventional induction heating cooker.
FIG. 6 is a side cross-sectional view of a conventional induction heating cooker.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body 2 Insulation board 3, 4 Heating part 5 Intake port 6 Exhaust port 7 Grill heating part 8 Operation part 9, 10 Heating means 11 Output control board 12 Cooling fan 13 Storage case 13a Case intake port 13b, 13c Cooling port 13d Air path

Claims (1)

An insulating plate for placing an object to be heated on the upper surface of the main body is provided, and a plurality of heating means below the insulating plate, and an output control board, provided a cooling fan for cooling them, upward to the rear body In an induction heating cooker provided with an opened intake port and an exhaust port,
Inside the main body, a resin storage case in which the output control board and the cooling fan are stored and the side surface and upper part are closed is installed.
The storage case includes said inlet and the corresponding casing inlet port provided in the upper position, and a plurality of cooling holes provided in said upper position of said housing case,
An air passage extending from the case air inlet to the plurality of cooling ports is formed in the storage case, the cooling fan is disposed upstream of the air passage, and the output control board is disposed downstream, and the air is sucked from the case air inlet. So that the blown air is cooled from the plurality of cooling ports after cooling the output control board;
At least one of the plurality of heating means is disposed above the storage case, at least one is disposed on the side of the heating means disposed above the storage case ,
At least one of the plurality of cooling ports opens to cool the heating means above the storage case, and at least one of the heating holes is disposed on the side of the heating means disposed above the storage case. Induction heating cooker opened to cool the means.

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