JP2007149704A - Induction heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve cooling efficiency of a heating coil or an output control substrate with a loss of cooling air, and also, to reduce cost with improving assembling performance. <P>SOLUTION: A grill heating part and a substrate case storing an output control substrate and a cooling fan are set in a body, and the output control substrate in the substrate case is cooled by the wind taken into the substrate case. A plurality of cooling mouths are formed in the substrate case, the output control substrate is cooled, and then, a plurality of heating coils are cooled by wind evacuated from the plurality of cooling mouths. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an induction heating cooker.

  A conventional induction heating cooker heats an object to be heated by generating an eddy current in an object to be heated such as an iron pan placed on an insulating plate by a magnetic flux generated by a heating coil. 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.

  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 coil, 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.

  As such conventional examples, there are those shown in Patent Document 1 (Japanese Patent Laid-Open No. 2001-196153) and Patent Document 2 (Japanese Patent Laid-Open No. 2001-176651).

  The example shown in this patent document 1 is demonstrated using FIG. 4 and FIG. FIG. 4 is a cutaway plan view of a conventional induction heating cooker, and FIG. 5 is a side sectional view.

  In the figure, an insulating plate 2 for placing an object to be heated (not shown) on the upper surface of the main body 1, a plurality of heating coils 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.

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. The first opening 15 serving as a main vent is provided at a position before the rear end of the left heating coil 9 and the second opening 16 following the right side is provided.

  The operation of the above configuration will be described.

  The outside air sucked from the air inlet 5 by the cooling fan 12 reaches the cooling fan 12 through the air 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 holder 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 coming out of the second opening 16 flows through the heating coil 9 to cool the right heating coil 10, and is then discharged from the exhaust port 6 to the outside of the main body 1.

By the way, such an induction heating cooker has the main ventilation path as described above as the intake duct 18,
It is composed of a plurality of components such as a substrate cover 14, a substrate holding table 17, and an operation unit rear wall 19. For this reason, there is a loss of cooling air, and it cannot be said that the cooling efficiency of the heating coils 9 and 10 and the output control board 11 is sufficient. There is also a problem that it takes time to assemble.

JP 2001-196153 A JP 2001-176651 A

  As described above, in the conventional induction heating cooker, the cooling efficiency of the heating coils 9 and 10 and the output control board 11 is insufficient, and there is a problem in assemblability.

  An object of the present invention is to solve the above-mentioned problems, and to reduce cooling air loss, improve the cooling efficiency of the heating coil and the output control board, and improve the assembling property to reduce the cost. To do.

  In order to solve the above-described problems, the present invention provides an insulating plate on which an object to be heated is placed on the upper surface of a main body, and a plurality of heating coils, an output control board, and these are cooled below the insulating plate. In an induction heating cooker provided with a cooling fan and provided with an intake port and an exhaust port opened upward at the rear of the main body, a grill heating unit and a side of the grill heating unit are provided in the main unit. And a resin board case in which the output control board and the cooling fan are housed and the side surface and the upper part are closed is installed, and the board case is located at the upper position corresponding to the air inlet. And a plurality of cooling ports provided at the upper position of the substrate case, and an air passage extending from the case intake port to the plurality of cooling ports is formed in the substrate case. , The cooling fan upstream of the air passage, The air that is sucked from the case intake port by disposing the output control board on the cooling air is discharged from the plurality of cooling ports after cooling the output control substrate, and the wind discharged from the plurality of cooling ports The plurality of heating coils are cooled.

  As described above, according to the present invention, the board case can improve the cooling efficiency of the heating coil and the output control board from the outside air suction portion, and can also improve the assemblability and reduce the cost. is there.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  1 is an external perspective view of the present invention, FIG. 2 is an internal plan view of the present invention, and FIG. 3 is a side sectional view of the present invention.

  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.

  Reference numerals 3 and 4 denote induction heating units, which are two parts on the left and right sides, and are parts for induction heating the object to be heated (not shown).

  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 portion opened upward at the rear portion 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.

  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 unit.

  A plurality of heating coils 9 and 10 are provided below the insulating plate 2 corresponding to the left and right induction heating units 3 and 4, and a high frequency current flows during induction heating to heat an object to be heated (not shown). Generate magnetic flux.

  Reference numeral 11 denotes an output control board which is provided below the insulating plate 2 and includes a control circuit which mainly controls the outputs of the plurality of heating coils 9 and 10. A cooling fan 12 cools the plurality of heating coils 9 and 10 and the output control board 11.

  A substrate case 13 for fixing the output control board 11 is provided below the right heating coil 10 and constitutes an integral air passage. The output control board 11 and the cooling fan 12 are arranged inside the air passage. A substrate case intake port 13 a is provided at a position corresponding to the rear intake port 5, and a plurality of cooling ports 13 b and 13 c are provided at positions corresponding to the plurality of heating coils 9 and 10.

  The substrate case intake port 13a is an opening that opens upward, and is configured to fit substantially inside the intake port 5 at the rear of the main body 1. The substrate case intake port 13a is an intake portion of the outside air that is sucked into the substrate case 13 by the cooling fan 12. is there.

  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 substrate case 13, and is substantially at the upper center of the substrate case 13 so as to face the side portion of the corresponding heating coil 9. The cooling air blown out and opened to the left is blown to the left heating coil 9.

  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 substrate case 13, and is located above the substrate case 13 so as to face the corresponding side of the heating coil 10. The cooling air blown out from the front side and opened rearward is blown to the right heating coil 10.

  The operation of the above configuration will be described.

  When the user places an object to be heated (not shown) on the induction heating unit 3 or 4 of the insulating plate 2 and operates the operation unit 8 to set induction heating and start cooking, the output control board 11 is A control signal is output to the heating coil 9 or 10 below the induction heating unit 3 or 4. By this control signal, the heating coil 9 or 10 generates a magnetic flux by flowing a high-frequency current therein, and this magnetic flux causes an eddy current to flow through the object to be heated (not shown). Exothermic and heated.

  When cooking is started, the output control board 11 simultaneously 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 board case intake port 13 a, and blows air to the front. I do.

  The air blown by the cooling fan 12 is blown to the output control board 11 disposed downstream of the cooling air inside the board 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 substrate case 13, and its direction is substantially horizontal left. Instead, it is cooled by spraying to the side of the left heating coil 9 and then discharged from the exhaust port 6 to the outside of the main body 1.

  The other part of the cooling air passes through the output control board 11, faces upward along the front wall surface of the substrate case 13, passes through the cooling port 13 c opened rearward on the upper front side of the substrate case 13, The direction is changed to a substantially horizontal rear, sprayed to the side of the right heating coil 10 and cooled, and then discharged from the exhaust port 6 to the outside of the main body 1.

  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 coil 9 or 10 and the cooling fan 12.

  As described above, the air path extending from the substrate case intake port 13a serving as the outside air suction portion to the cooling ports 13b and 13c serving as the discharge portions is constituted by the integrated substrate case 13 and is formed in the substrate case 13. Since the output control board 11 and the cooling fan 12 are disposed, the cooling of the output control board 11 has no cooling air loss and high cooling efficiency.

  Further, by providing the first and second cooling ports 13b and 13c so as to be opposed to the side portions of the corresponding heating coils 9 and 10, dispersion of the cooling air blown from these is suppressed, and each heating coil 9 is concentrated. , 10, the cooling of the left and right heating coils 9, 10 is very high in cooling efficiency.

  In addition, although the said Example demonstrated the heating coils 9 and 10 as two, in the case of three or more, the number of the several cooling ports 13b and 13c provided in the board | substrate case 13 similarly, a position, and the blowing direction are shown. What is necessary is just to provide suitably according to the number and position of the heating coils 9 and 10, respectively.

  As described above, according to the induction heating cooker of the present invention, the insulating plate 2 for placing the object to be heated is provided on the upper surface of the main body 1, and a plurality of heating coils 9, 10 are provided below the insulating plate 2. In the induction heating cooker provided with the output control board 11, the cooling fan 12 for cooling them, and the board case 13 for fixing the output control board 12, the board case 13 is discharged from the outside air suction part. And the output control board 12 and the cooling fan 13 are disposed in the air passage of the substrate case 13, thereby suppressing the loss of cooling air and heating coils 9, 10. In addition, the cooling efficiency of the output control board 11 can be improved, and the assemblability can be improved to reduce the cost.

1 is an external perspective view of the present invention. It is an internal top view of this invention. It is side surface sectional drawing of this invention. It is a fracture | rupture top view of the induction heating cooking appliance of a prior art example. It is side surface sectional drawing of the induction heating cooking appliance of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Main body, 2 ... Insulating plate, 3, 4 ... Induction heating part, 5 ... Intake port, 6 ... Exhaust port, 7 ... Grill heating part, 8 ... Operation part, 9, 10 ... Heating coil, 11 ... Output control board , 12 ... Cooling fan,
13 ... Substrate case, 13a ... Substrate case intake port, 13b, 13c ... Cooling port.

Claims (2)

An insulating plate on which an object to be heated is placed is provided on the upper surface of the main body, a plurality of heating coils, an output control board, and a cooling fan for cooling them are provided below the insulating plate, and directed upward at the rear of the main body. In an induction heating cooker provided with an opened intake port and an exhaust port,
Inside the main body is a grill heating part and a resin board which is disposed on the side of the grill heating part and houses the output control board and the cooling fan inside and is closed at the side and upper part. A case is installed,
The substrate case has a case intake port provided at the upper position corresponding to the intake port, and a plurality of cooling ports provided at the upper position of the substrate case,
An air passage extending from the case intake port to the plurality of cooling ports is formed in the substrate 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 intake port. And the discharged air is cooled from the plurality of cooling ports after cooling the output control board,
An induction heating cooker configured to cool the plurality of heating coils with wind discharged from the plurality of cooling ports. An insulating plate on which an object to be heated is placed is provided on the upper surface of the main body, a plurality of heating coils, an output control board, and a cooling fan for cooling them are provided below the insulating plate, and directed upward at the rear of the main body. In an induction heating cooker provided with an opened intake port and an exhaust port,
Inside the main body is a grill heating part and a resin board which is disposed on the side of the grill heating part and houses the output control board and the cooling fan inside and is closed at the side and upper part. A case is installed,
The substrate case has a case intake port provided at the upper position corresponding to the intake port, and a plurality of cooling ports provided at the upper position of the substrate case,
An air passage extending from the case intake port to the plurality of cooling ports is formed in the substrate 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 intake port. And the discharged air is cooled from the plurality of cooling ports after cooling the output control board,
At least one of the plurality of heating coils is disposed above the substrate case, and at least one is disposed above the grill heating unit.
At least one of the plurality of cooling ports is opened to cool the heating coil above the substrate case, and at least one is opened to cool the heating coil arranged above the grill heating unit. Induction heating cooker.

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