JP4887715B2 - Induction heating cooker - Google Patents

Description

  The present invention relates to an induction heating cooker that heats an object to be heated using induction heating by a high-frequency magnetic field.

  Conventionally, in this type of induction heating cooker, as shown in FIG. 8, a flat top plate 1 made of non-metal such as glass is placed on the top surface of the main body, and about 10 mm below the top plate 1. An induction heating coil for performing induction heating to a load such as a pan through an appropriate space, an electric heater for performing resistance heating, and the like are disposed. The arrangement of these heating sources is such that the first induction heating coil 2 and the second induction heating coil 3 for performing induction heating respectively on the left and right of the front surface are disposed, and resistance heating is performed at the rear center. A radiant heater 20 is arranged. Below the induction heating coil, a roaster heating chamber 11 for cooking fish or the like is disposed on one of the left and right sides, and on the other side, high frequency power is supplied to the first induction heating coil 2 and the second induction heating coil 3. The first inverter circuit 5 and the second inverter circuit 6 are disposed, and the first and second inverter circuits 5 and 6 and the first and second inverter circuits 5 and 6 are disposed behind the first and second inverter circuits 5 and 6, respectively. In order to perform forced cooling of the induction heating coils 2 and 3, a first cooling fan 10 is disposed. Between the roaster heating chamber 11 and the first and second induction heating coils 2, 3, a heat insulating partition 8 for interrupting the heat of the roaster heating chamber 11 is provided, and the first and second inverter circuits 5, 6 and the first and second induction heating coils 2 and 3, a partition also serving as an air path for sending the cooling air of the first cooling fan 10 to the first and second induction heating coils 2 and 3 12 is arranged (see, for example, Patent Document 1).

On the other hand, a structure by induction heating has been proposed for both the front left and right burners and the rear center burner (for example, Patent Document 2). Therefore, a comfortable cooking environment can be obtained without an increase in ambient temperature due to radiant heat or the like.
JP 2001-196153 A JP 2004-186002 A

  However, in the case where the conventional induction heating cooker as shown in FIG. 8 is induction heating for all three burners as described in Patent Document 2, induction heating burners arranged at the two front positions are used. Since the inverter circuit for driving is already arranged on the side surface of the roaster, there is a problem that there is no space for mounting the inverter circuit.

  The present invention solves the above-mentioned problem, and by arranging the third inverter circuit directly below the third induction heating coil, induction heating cooking that can be easily replaced with a conventional radiant heater is provided. The purpose is to provide a vessel.

In order to solve the above problems, an induction heating apparatus according to the present invention includes a top plate provided on the upper surface of a main body, a first induction heating coil and a second induction arranged in front of the top plate. A heating coil and a third induction heating coil disposed behind, a first inverter that forms a drive circuit for the first induction heating coil, and a second that forms a drive circuit for the second induction heating coil Inverter circuit, a roaster heating chamber provided on one of the left and right sides of the main body, and a heat insulating partition provided on the upper portion of the roaster heating chamber, and the first induction on the heat insulating partition A heating coil is provided, the first inverter circuit and the second inverter circuit are provided on the side of the roaster heating chamber, a partition is provided so as to cover the first and second inverter circuits, and the first With inverter circuit Serial first cooling fan is provided a second inverter circuit to the bulkhead lower proximity to the said first inverter circuit multi-tiered second inverter circuit, further the second induction heating coil in an upper portion of the partition wall the provided provided a third inverter circuit for supplying power to the third induction heating coil to the heat insulating partition wall and the partition wall upper, said third induction heating coil provided in an upper portion of the third inverter circuit, A second cooling fan is provided adjacent to the third induction heating coil and the third inverter circuit .

  Thereby, since it is not necessary to newly provide a place for arranging the third induction heating coil and the third inverter circuit, the components used for the induction heating burner newly provided at the center back are accommodated in the housing. Therefore, it is possible to realize an induction heating cooker that is easy to use because it can be configured with three induction heating burners with high efficiency and good heat followability.

  Since the induction heating cooker of the present invention can adopt an induction heating method for each burner, a heating source with high efficiency and good followability can be obtained, and an easy-to-use cooker can be realized.

The first invention includes a top plate provided on the upper surface of the main body, a first induction heating coil and a second induction heating coil provided in front of the top plate provided below the top plate, and a first plate arranged in the rear . 3 induction heating coils, a first inverter forming a drive circuit for the first induction heating coil, a second inverter circuit forming a drive circuit for the second induction heating coil, and left and right of the main body A roaster heating chamber provided on one side; and a heat insulating partition provided on the upper portion of the roaster heating chamber, wherein the first induction heating coil is provided on the upper portion of the heat insulating partition, and the roaster heating chamber is provided. The first inverter circuit and the second inverter circuit are provided on the sides of the first inverter circuit, a partition is provided so as to cover the first and second inverter circuits, and the first inverter circuit and the second inverter circuit Multi-stage heavy Wherein said partition wall lower proximate the first inverter circuit and the second inverter circuit provided with the first cooling fan, further a second induction heating coil provided in an upper portion of the partition wall, said third induction heating coil providing the third inverter circuit for supplying power to the heat insulating partition wall and the partition wall upper portion, said third induction heating coil provided in an upper portion of the third inverter circuit, said third induction heating coil and the second By providing the second cooling fan in the vicinity of the third inverter circuit, there is no need to newly provide a place for arranging the third induction heating coil and the inverter circuit unit, so the third induction heating burner is provided. Because the components used in the product can be housed in the housing, all three ports can be induction heating burners, making it easy to use, making use of the features of high efficiency and good heat followability It can be. In addition, the first and second inverter circuits are stacked in multiple stages, and the first cooling fan is arranged close to the rear of the first and second inverter circuits, so that the first cooling fan Since the inverters can be intensively cooled in the first and second heat generation amounts, the cooling efficiency is improved, the wind noise of the cooling fan can be reduced, and a cooking device having excellent silence performance can be obtained. In addition, a first cooling fan disposed close to the rear of the first and second inverter circuits and a second disposed near the third inverter circuit for supplying power to the third induction heating coil. By providing this cooling fan, it is not necessary to improve the performance of the first cooling fan in order to cool the third induction heating coil and the third inverter circuit, thereby preventing the noise of the cooling fan from increasing. Therefore, it is possible to provide an easy-to-use cooker with excellent noise reduction performance.

In the second aspect of the invention, the second cooling fan is arranged in the vicinity of the exhaust port, and the third induction heating coil and the third inverter are arranged in the intake direction of the second cooling fan. The heat generated by the components on the density-mounted board can be efficiently removed from the chassis, and the cooling fans can be placed at a distance, thus eliminating interference between the fans. It can be set as the cooking device excellent in the conversion performance.

According to a third aspect of the present invention, there is provided an IH module including a third induction heating coil, a third inverter circuit, and a second cooling fan as an integral unit, and including the third induction heating coil in the same housing according to the model. By making the outer diameter of the IH module and the electric heater approximately the same diameter so that the electric heater can be replaced , the wiring can be shortened and the cooling can be easily performed intensively. Therefore, it is possible to provide a cooking device with excellent noise reduction performance.

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

(Embodiment 1)
1-3 is a figure which shows the structure of the induction heating apparatus in the 1st Embodiment of this invention. FIG. 1 is an overall view of the induction heating apparatus of the present embodiment, FIG. 2 is a view seen from the side, and FIG. 3 is a view seen from the top.

  In FIG. 1, a flat top plate 1 made of a non-metal such as glass is placed on the top surface of the main body, and a load such as a pan containing food is placed. An induction heating coil for performing induction heating on a load such as a pan through a space of about 10 mm is disposed below the top plate 1. The induction heating coil includes a first induction heating coil 2 and a second induction heating coil 3 disposed on the left and right in front of the main body, and further includes a first induction heating coil 2 and a second induction heating coil 3. The third induction heating coil 4 is disposed near the rear center. Usually, the first and second induction heating coils 2 and 3 disposed in the front are larger in diameter and stronger than the third induction heating coil 4 disposed in the rear so that the user can easily cook. Things are arranged. One of the first induction heating coil 2 and the second induction heating coil 3 is provided with a roaster heating chamber 11 for performing grilling of fish or the like, and the other is provided with the first induction heating coil 2 and the second induction heating coil 2. A first inverter circuit 5 and a second inverter circuit 6 for supplying high frequency power to the two induction heating coils 3 are arranged. As shown in FIG. 2, the first inverter circuit 5 and the second inverter circuit 6 are stacked on the stage and are disposed in front of the first cooling fan 10 disposed at the rear. Between the roaster heating chamber 11 and the first and second induction heating coils 2, 3, a heat insulating partition 8 for interrupting the heat of the roaster heating chamber 11 is provided, and the first and second inverter circuits 5. , 6 and the first and second induction heating coils 2 and 3, the partition wall 12 also serves as an air path for guiding the cooling air of the first cooling fan 10 to the first and second induction heating coils 2 and 3. Is placed. A third inverter circuit 7 that supplies high-frequency power to the third induction heating coil 4 is disposed below the third induction heating coil 4 and above the thermal barrier 8 and the partition 12. By adopting such a configuration, the third induction heating coil 4 and the third inverter circuit 7 can be configured to be handled as a unit, and a conventional burner for a heater such as a radial heater can be used. It can be easily replaced. As a result, the user can select the heater method or the induction heating method for the burner at the center rear at the time of device purchase according to his / her usage status. In addition, since the third induction heating coil 7 is often used mainly for heat insulation cooking and stew cooking, the third induction heating coil 7 can suppress electric power as compared with the first and second induction heating coils 2 and 3. The inverter circuit 7 can also have a smaller mounting area than the first and second inverter circuits 5 and 6.

  As described above, in the present embodiment, the third induction heating coil 4 is provided at the rear center of the first induction heating coil 2 and the second induction heating coil 3 and power is supplied to the third induction heating coil 4. The third inverter circuit 7 is disposed below the third induction heating coil 4 and above the heat shield partition wall 8 and the partition wall 12 to dispose the third induction heating coil 4 and the third inverter circuit. Since there is no need to provide a new place, the components used for the third induction heating burner can be accommodated in the casing, so all three outlets can be induction heating burners. It can be used as an easy-to-use cooker utilizing the good features.

(Embodiment 2)
FIG. 4 is a diagram showing the configuration of the induction heating apparatus according to the second embodiment of the present invention.

  The present embodiment is different from the first embodiment in that the roaster heating chamber 11 is arranged near the center of the casing, and the first side of the roaster heating chamber 11 is near the first induction heating coil 2. The second inverter circuit 6 is disposed on the side surface of the roaster heating chamber 11 on the side near the second induction heating coil 3.

  In the induction heating apparatus of this configuration, each cooling fan divides and takes charge of cooling the set of the induction heating coil and the inverter, so that cooling can be performed with a cooling air amount that matches the input power of each burner. That is, it is possible to adopt a configuration excellent in noise reduction performance that can suppress the air volume per fan.

  Further, by adopting a configuration in which the third induction heating coil 4 and the third inverter circuit 7 can be handled as a unit, it can be easily replaced with a burner of a heater such as a radiant heater conventionally used. As a result, the user can select the heater method or the induction heating method for the burner at the center rear at the time of device purchase according to his / her usage status. In addition, since the third induction heating coil 7 is often used mainly for heat insulation cooking and stew cooking, the third induction heating coil 7 can suppress electric power as compared with the first and second induction heating coils 2 and 3. Further, the inverter circuit 7 can also be made smaller than the first and second inverter circuits 5 and 6.

  As described above, in the present embodiment, the induction heating coil and inverter pair can be arranged close to each burner, so that the role of the cooling fan can be shared and the fan according to the input power of each burner can be shared. The noise can be reduced by maintaining the rotational speed, and the third induction heating coil 4 is provided at the rear center of the first induction heating coil 2 and the second induction heating coil 3 and the third induction heating coil 4 is provided. By providing a third inverter circuit 7 for supplying electric power to the heat shield partition 8 and the partition 12 below the third induction heating coil 4, the third induction heating coil 4 and the third inverter circuit are provided. Since there is no need to provide a new place for placement, the components used for the third induction heating burner can be accommodated in the housing, so all three outlets should be induction heating burners. Can be can be a good cooker convenient for utilizing the good characteristics of thermal tracking ability with high efficiency.

(Embodiment 3)
FIG. 5 is a diagram showing the configuration of the induction heating apparatus according to the third embodiment of the present invention. The present embodiment is different from the first embodiment in that it the second cooling fan 1 3 provided to perform cooling of the third induction heating coil 4 and the third inverter circuit 7.

  In the induction heating cooker having the conventional configuration shown in FIG. 8, the first cooling fan 10 mainly cools the first and second induction heating coils 2 and 3 and the first and second inverter circuits 5 and 6. Therefore, the cooling air is not sent to the radial heater 20. Therefore, when the third induction heating coil 4 and the third inverter circuit 7 are arranged, it becomes necessary to newly increase the cooling capacity of the first cooling fan 10. Therefore, noise increases due to an increase in the rotational speed of the first cooling fan 10 or the like. For this reason, the user cannot obtain a comfortable cooking environment during cooking. Therefore, in order to cool the third induction heating coil 4 and the third inverter circuit 7 as in the present embodiment, a second second is newly added in the vicinity of the third induction heating coil 4 and the third inverter circuit 7. By disposing the cooling fan 13, it is not necessary to increase the capacity of the first cooling fan 10, and noise does not increase. In addition, since the third induction heating coil 4 and the third inverter circuit 7 have a unit configuration, it is not necessary to disperse the cooling air from the second cooling fan 13, and thus cooling can be performed efficiently. It becomes.

  In addition, as shown in FIG. 6, the second cooling fan 13 is configured to be cooled by intake air, and the second cooling fan 13 is directed toward the exhaust port so as not to hinder the flow of air from the first cooling fan 10. By arrange | positioning, the 3rd induction heating coil 4 and the 3rd inverter circuit 7 can be cooled efficiently. This is because the mounting space for the third inverter 7 is small, and the components are mounted at a high density. Therefore, when the components are cooled in the exhaust direction, it is expected that the wind will not reach the components sufficiently. is there.

  As described above, according to the present embodiment, the second cooling fan 13 disposed in the vicinity of the third inverter circuit 7 that supplies power to the third induction heating coil 4 includes the third cooling fan 13. Since it is not necessary to improve the performance of the first cooling fan 10 to cool the induction heating coil 4 and the third inverter circuit 7, it is possible to prevent the noise of the cooling fan from increasing and the noise is low. It can be a convenient cooker.

(Embodiment 4)
FIG. 7 is a diagram showing the configuration of the induction heating apparatus according to the fourth embodiment of the present invention. The present embodiment is different from the first embodiment in that the IH module 14 is configured by integrating the third induction heating coil 4, the third inverter circuit 7, and the second cooling fan 13. .

  The IH module 14 has a third inverter circuit 7 disposed immediately below the third induction heating coil 7, and a third cooling fan is formed by forming a wall on the side of the inverter circuit 7. 13 is arranged. Therefore, the second cooling fan 13 can form an ideal air passage, and it is not necessary to consider the cooling of the burners of other parts, so that a cooling fan with a reduced air volume can be employed. . In particular, when cooling in the intake direction, heat can be efficiently discharged to the outside by taking a module shape. On the other hand, from the third induction heating coil 4, a lead wire for the induction heating coil and a lead wire such as a temperature sensor provided in the vicinity of the induction heating coil for detecting the temperature of the back surface of the top plate 1 are connected to the third inverter 7. Connected. Since these lines can be shortened by adopting a module configuration, there is an advantage that noise from the lead wire of the third induction heating coil 7 can be suppressed. In addition, by combining the shape of the IH module 14 with the shape of the radiant heater 20 or the like, it is possible to replace the electric heater such as the radiant heater 20 and the induction heater by the IH module 14 at a low cost in the same housing. The range of choices for equipment purchasers will increase.

  As described above, according to the present embodiment, the third induction heating coil 4, the third inverter 7, and the second cooling fan 13 constitute an IH module, so that component cooling can be performed efficiently. In addition, replacement with an electric heater such as the radiant heater 20 is simplified, and the user can select a preferred burner at low cost.

The figure which shows the structure of the induction heating apparatus in Embodiment 1 of this invention. Side view of induction heating apparatus according to Embodiment 1 of the present invention. The upper view of the induction heating apparatus in Embodiment 1 of this invention The upper view of the induction heating apparatus in Embodiment 2 of this invention The upper view of the induction heating apparatus in Embodiment 3 of this invention The upper view of the induction heating apparatus in Embodiment 3 of this invention Module conceptual diagram of induction heating device in Embodiment 4 of the present invention The figure which shows the structure of the conventional induction heating apparatus

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Top plate 2 1st induction heating coil 3 2nd induction heating coil 4 3rd induction heating coil 5 1st inverter circuit 6 2nd inverter circuit 7 3rd inverter circuit 8 Thermal insulation partition 9 Operation part 10 First cooling fan 11 Roaster heating chamber 12 Bulkhead 13 Second cooling fan 14 IH module 20 Radiant heater

Claims (3)

A top plate provided on the upper surface of the main body, a first induction heating coil and a second induction heating coil disposed in front of the top plate, and a third induction heating coil disposed behind the top plate. A first inverter that forms a drive circuit for the first induction heating coil; a second inverter circuit that forms a drive circuit for the second induction heating coil; and a left or right side of the main body. A roaster heating chamber and a heat insulating partition provided on the upper portion of the roaster heating chamber, the first induction heating coil is provided on the upper portion of the heat insulating partition, and the first heating coil is provided on a side of the roaster heating chamber. 1 inverter circuit and the second inverter circuit, a partition wall is provided so as to cover the first and second inverter circuits, and the first inverter circuit and the second inverter circuit are stacked in multiple stages. 1 a Close to the converter circuit and the second inverter circuit of the first cooling fan provided in the partition wall lower, further a second induction heating coil provided in an upper portion of the partition wall, supply power to the third induction heating coil the third inverter circuit provided in the heat insulating partition wall and the partition wall upper, the third to the top of the inverter circuit provided with the third induction heating coil, said third induction heating coil and the third inverter circuit An induction heating cooker in which a second cooling fan is provided in the vicinity . A second cooling fan disposed in the exhaust port near the induction heating cooker of claim 1, wherein the third induction heating coil and the third inverter circuit is disposed in the intake direction of the second cooling fan. In the IH module in which the third induction heating coil, the third inverter circuit, and the second cooling fan are integrated, the IH module including the third induction heating coil is replaced with the electric heater in the same housing depending on the model. The induction heating cooker according to claim 1 or 2 , wherein the outer diameters of the IH module and the electric heater are approximately the same as possible .

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