JP2005122963A - Induction heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an induction heating cooker of which cooling is improved. <P>SOLUTION: A coil support plate 24 which supports a heating coil right 12-b is provided between a control unit 18 and the heating coil right 12-b. The coil support plate 24 covers the control unit 18 and a blast opening 21 of a cooling fan unit 23 as to connect them, and comprises a first opening 25. A duct cover 26 is engaged with the lower part of the coil support plate 24, so that a duct part 28 is formed on the blow out side to the blast opening 21, which connects the other end, one end being a second opening 27, to the first opening 25. Thus, the air sucked through the blast opening 21 of the cooling fan unit is made to flow in through the second opening 27, and the blast of the outside air exhausted through the first opening 25 is blown to the heating coil, resulting in improved cooling performance of the heating coil. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an induction heating cooker, and particularly to a cooling configuration.

  Conventionally, as this type of induction heating cooker, for example, there has been one described in Patent Document 1 (Japanese Patent Laid-Open No. 2001-267054).

  FIG. 5 shows a cross-sectional view of a conventional induction heating cooker described in Patent Document 1. As shown in FIG. As shown in FIG. 5, this induction heating cooker is configured to be used by being incorporated in a cabinet of a system kitchen. There is a top plate 1 for placing a pan or the like which is a cooking utensil to be heated. A heating coil 2 is placed in front of the top plate 1 and stored in a main body shell 3. A control unit 4 that drives and controls the heating coil 2 is disposed in the main body shell 3. A cooling fan unit 7 having one fan 6 having a blower port 5 in the front is attached to the back of the control unit 4, and the blower port is provided to blow air to the control unit 4.

Outside air enters through the intake opening 8 provided on the right rear side of the top plate 1, and the air discharged from the blower opening 5 of the fan unit 7 is blown toward the control unit 4, cools the control unit 4, and then heats it The coil 2 is passed and cooled.
JP 2001-267054 A

  However, the conventional configuration has a problem that it is difficult to improve the cooling performance of the heating coil because the heating coil is cooled by the cooling air after cooling the control unit. This invention solves the said conventional subject, and it aims at providing the induction heating cooking appliance which improves cooling performance.

  In order to solve the above-described conventional problems, the induction heating cooker of the present invention is provided with a coil support plate that supports the heating coil between the control unit and the heating coil, and the coil support plate controls the air outlet of the cooling fan. The first opening is provided, and a duct cover is engaged with the lower part of the coil support plate, whereby the second opening is one end and the other end is the first opening with respect to the air blowing port. A duct portion is formed as one opening, and the air sucked from the air blowing port of the cooling fan is introduced from the second opening and discharged from the first opening.

  Thereby, since the sucked air is directly blown to the heating coil and used for cooling the heating coil, the cooling of the heating coil is improved.

  The induction cooking device of the present invention can improve the cooling performance.

  According to a first aspect of the present invention, there is provided a top plate for placing an object to be heated provided at an upper portion of the outer shell of the main body, a heating coil for providing an induction heating of the object to be heated provided at a lower portion of the top plate, A cooling fan unit having a fan provided at the front and having a fan, a controller disposed below the heating coil in front of the cooling fan and supplying a high-frequency current to the heating coil, the controller, and the A coil support plate that supports the heating coil provided between the heating coils, the coil support plate covers the air blowing port of the cooling fan unit and the control unit, and has a first opening, By engaging a duct cover with the lower part of the coil support plate, a duct portion having a second opening as one end and the other end as the first opening is formed with respect to the air blowing port, and the cooling fan unit is formed. The cooling of the heating coil is improved by directing the air sucked into the heating coil by allowing the air sucked from the air outlet to flow in from the second opening and to be discharged from the first opening. Can do.

  In the second invention, in particular, the duct cover can incline the cooling air into the heating coil more by inclining the air blowing port side of the cooling fan unit downward with respect to the air blowing port of the first invention. The cooling of the heating coil can be improved.

  In the third invention, in particular, the duct cover is provided with an inclined portion that blows out from the first opening to the heating coil with respect to the air blowing port of the first invention, so that the cooling air is directed toward the heating coil. Can be applied and cooling of the heating coil can be improved.

  In the fourth invention, in particular, the coil support plate of the first invention is formed of a material other than metal so that it can be efficiently heated without blocking the induction heating magnetic field from the heating coil like metal. it can.

  In particular, the fifth invention has a plurality of heating coils of the first invention, and a roaster and a roaster partition surrounding the roaster are arranged on the opposite side of the cooling fan to the substantially central part of the main body, and other parts are provided above the roaster partition. The heating coil is provided, the first opening of the coil support plate is provided on the other heating coil side, and the air sucked from the blower opening of the cooling fan is introduced from the second opening and discharged from the first opening. Thus, wind can be applied to the heating coil located far from the fan, and the cooling can be improved and the duct can be substantially L-shaped to increase the strength.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 is a perspective view showing an internal configuration of the induction heating cooker according to the first embodiment of the present invention, and FIG. 2 is a right side cross section of the induction heating cooker according to the first embodiment of the present invention. FIG. 3 is a schematic view of a duct configuration according to the first embodiment of the present invention.

  This induction heating cooker is configured to be used by being incorporated in a cabinet of a system kitchen. 1, 2, and 3, there is a top plate 11 on which a pan or the like to be heated is placed. Below the top plate 11, a heating coil left 12-having an output rating of 3 kW in front of the left side. A heating coil right 12-b with an output rating of 2 kW is placed in front of “a” and a right side heater 13 is placed at the back of the center. An operation unit 14 is placed on the right side of the front surface, and a roaster 15 is placed on the left side. A roaster partition 16 is located above the roaster 15, and these are housed in an outer shell 17.

  On the right side of the roaster 15 in the main body outline 17, a control unit 18 that drives and controls the heating coils left and right 12-a, b is fixed to a resin substrate base 19. A cooling fan unit 23 having one fan 22 having an air blowing port 21 is provided in front of the control unit 18 and below the intake opening 20, and between the control unit 18 and below the heating coil right 12-b. Is provided with a coil support plate 24 for supporting the heating coil right 12-b. The coil support plate 24 covers the air outlet 21 of the cooling fan unit 23 and the control unit 18 so as to be connected, is supported by the substrate base 19, and has a first opening 25. Further, here, the coil support plate 24 is formed of a single resin part, and the duct portion 28 is formed below the coil support plate and the duct cover 26 is attached. One is the air outlet side and the other is the first opening. A wall 29 leading to is arranged. The duct support plate 24 is engaged with a duct cover 26 along a wall 29 that extends to the lower side of the coil support plate 24, one on the air outlet side and the other to the first opening. The duct portion 28 is formed such that the opening 27 is one end and the other end is connected to the first opening 25.

  About the induction heating cooking appliance comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. First, an induction heating cooker generates an alternating magnetic field from a heating coil by flowing a high-frequency current through the heating coil and generates an eddy current in a pan that is an object to be heated. Self-heating occurs due to resistance and flowing current, and heat from the pan is received through the top plate, resulting in a high temperature. However, if the temperature of the electrical insulator of the heating coil is exceeded, dielectric breakdown will occur, and cooling is required to lower the temperature of the heating coil. Similarly, the control unit that supplies current to the heating coil also generates heat, and needs to be cooled so as not to exceed the temperature of components used in the components existing in the control unit.

  Here, the path of the cooling air will be described. Outside air enters from the intake opening 20 provided behind the top plate 11, passes through the ventilation path of the cooling fan unit 23, is sucked into the fan 22, blown out from the blower port 21 to the control unit 18, and is also cooled by the cooling fan unit. The air sucked from the air blowing port 21 flows in from the second opening 27 and is discharged from the first opening 25 to cool the heating coil.

  As described above, in the present embodiment, the air is blown toward the control unit 18 to blow the air, and the heat generated by the control unit 18 such as the switching element is directly cooled by the air sucked from the outside air. At the same time, by forming a duct portion 28 having one end of the second opening 27 and one end connected to the first opening 25 on the air blowing side with respect to the air blowing port 21, the air blowing port 21 of the cooling fan unit The air that has been sucked in is introduced from the second opening 27 and other unaffected wind sucked from the outside air discharged from the first opening 25 can be applied to the heating coil, thereby improving the cooling of the heating coil. be able to.

  The coil support plate 24 is composed of a single component, and is supported by the substrate base 19 to form a duct portion 28 and a wall 29 to which the duct cover 26 is attached. The strength as a support can be increased.

  In addition, in metal, eddy current loss occurs and the magnetic field changes due to heat, but by using a resin support for the coil support plate that supports the heating coil, the magnetic field generated from the heating coil that performs induction heating is hindered. The heating magnetic field can be efficiently used for heating the pan.

  In addition, by constructing a second opening having an angle with respect to the air blowing port by inclining the air blowing port 21 side of the cooling fan unit 23 of the duct cover 26 of the embodiment in the downward direction, the duct portion particularly from the air blowing port. The amount of wind flowing into the air can be increased, and cooling of the heating coil can be improved. Furthermore, since the duct cover is installed from below the coil support plate, the opening area can be changed by inclining the wall forming the duct portion arranged on the coil support plate.

  In addition, by providing the duct cover 26 according to the present embodiment with an inclined portion that blows out from the first opening 25 to the heating coil, it is possible to make the wind particularly directional so as to apply the cooling air toward the heating coil. The cooling of the heating coil can be improved.

(Embodiment 2)
FIG. 3 is a perspective view showing an internal configuration of the induction heating cooker according to the second embodiment of the present invention.

  The difference from the first embodiment is that the first opening 25 of the coil support plate 24 is provided on the heating coil left 12-a side.

  With the configuration as described above, the air sucked from the air blowing port of the cooling fan is introduced from the second opening and discharged from the first opening, and the cooling air is applied to the left heating coil 12-a.

  As described above, in the present embodiment, the first opening 25 of the coil support plate 24 is provided on the heating coil left 12-a side, and the air sucked from the air blowing port of the cooling fan is caused to flow in from the second opening. By exhausting from one opening and applying cooling air to the heating coil left 12-a, it is possible to apply the air of the outside air to the heating coil left 12-a located far from the fan, and the cooling efficiency is improved. Since the duct portion 28 is substantially L-shaped, the strength of the coil support plate can be increased.

  As described above, since the induction heating cooker according to the present invention can further improve the cooling performance, it can be applied to uses such as induction heating cookers other than the built-in type.

The perspective view which shows the structure inside the induction heating cooking appliance in Embodiment 1 of this invention. Sectional drawing which shows the cross section of the right side surface of the induction heating cooking appliance in Embodiment 1 of this invention Schematic diagram of duct configuration in Embodiment 1 of the present invention The perspective view which shows the structure inside the induction heating cooking appliance in Embodiment 2 of this invention. Sectional view of a conventional induction heating cooker

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,11 Top plate 2 Heating coil 3,17 Main body outline 4,18 Control part 5,21 Blower port 6,22 Fan 7,23 Cooling fan unit 8,20 Intake opening part 12-a Heating coil left 12-b Heating coil Right 13 Lagent 14 Operation section 15 Roaster 16 Roaster partition 19 Substrate base 24 Coil support plate 25 First opening 26 Duct cover 27 Second opening 28 Duct section 29 Wall

Claims (5)

A top plate for placing an object to be heated provided at the upper part of the outer shell of the main body, a heating coil for inductively heating the object to be heated provided at the lower part of the top plate, and an air outlet provided below the intake opening at the rear of the body A cooling fan unit having a fan, a control unit arranged below the heating coil and in front of the cooling fan and supplying a high-frequency current to the heating coil, and provided between the control unit and the heating coil A coil support plate for supporting the heating coil, the coil support plate covering the air blowing port of the cooling fan unit and the control unit, and having a first opening at the lower part of the coil support plate. By engaging the duct cover, a duct portion is formed with the second opening as one end and the other end as the first opening with respect to the air blowing port, and from the air blowing port of the cooling fan unit. Configuration and the induction heating cooker to the gas and wind caused to flow from said second opening is discharged from the first opening. The induction heating cooker according to claim 1, wherein the duct cover is inclined downward on the air outlet side of the cooling fan unit. The induction heating cooker according to claim 1, wherein the duct cover includes an inclined portion that blows out from the first opening to the heating coil. The induction heating cooker according to claim 1, wherein the coil support plate is formed of a material other than metal. A plurality of heating coils, a roaster and a roaster partition that surrounds the roaster on the opposite side of the cooling fan with respect to the approximate center of the main body, and another heating coil provided on the upper portion of the roaster partition, the first of the coil support plate The induction heating cooker according to claim 1, wherein an opening is provided on the other heating coil side, and the air sucked from the air blowing port of the cooling fan is introduced from the second opening and discharged from the first opening.

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