JPH09167677A - Induction heating heating-element and induction heating cooking appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform cooking excellent in the result by providing an inverter circuit, a control part and a heating part, and constituting the heating part of an induction part magnetically coupled with a heating coil and a heating-element which is connected to the induction part and has a large resistance value. SOLUTION: An inverter control means 13 controls an inverter circuit 12, and supplies a high frequency current to a heating coil 11, and the coil 11 generates a high frequency magnetic field by receiving this high frequency current. This high frequency magnetic field is interlinked with a heating part 15 arranged in an upper part of the coil 11, and an eddy current flows to the heating part 15. In this eddy current, since an induction part 16 and a heating-element 17 are electrically connected to each other, the eddy current flowing to the induction part 16 flows to the heating- element 17 as it is, and since the heating-element 17 has a large resistance value, a calorific value also becomes large. Therefore, a heating object placed on the heating- element 17 is cooked by heating of the heating-element 17. At this time, since radiation heat received by a control part 10 from the heating object is only the sum of thicknesses of the induction part 16 and the heating-element 17, it becomes very little.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction heating heating element used for cooking grilled foods such as fish, and an induction heating cooker using the induction heating heating element.

[0002]

2. Description of the Related Art In recent years, an electromagnetic cooker using a dedicated plate for roast meat has been commercialized. This electromagnetic cooker is shown in Fig. 8.
As shown in FIG. 1, it is composed of a main body 1 and a plate 2 installed on the main body 1 and used. In the main body 1, a heating coil 3 that generates a high-frequency magnetic field and induction-heats the plate 2
An inverter circuit 4 for supplying a high-frequency current to the heating coil 3 and an inverter control means 5 for controlling the output power of the inverter circuit 4 are provided.

With the above structure, the plate 2 has the heating coil 3
Induction heating is performed by the high-frequency magnetic field that is generated, and the food to be cooked such as roasted meat in the plate 2 is cooked. At this time, the baking of the food to be cooked is performed by controlling the inverter circuit 4 by the inverter control means 5 to adjust the high-frequency power supplied to the heating coil 3, and the baking can be easily adjusted to the desired baking. is there.

[0004]

However, the above-described conventional electromagnetic cooker has the following problems. One is that when the food to be cooked is meat, the meat is baked together with the gravy generated by heating. Therefore, it is difficult to cook well-made roasted meat. Secondly, heat generated from the food to be cooked during the cooking is radiated to the main body 1 and the electric parts such as the heating coil 3 in the main body 1 are likely to deteriorate.

The present invention solves the problems of the conventional structure as described above, and it is possible to perform good-quality cooking, and the control unit receives less radiation heat generated during cooking. The first purpose is to provide a heating element. A second object of the present invention is to provide an induction heating cooker capable of performing good-quality cooking by using this induction heating heating element and reducing the influence of radiant heat.

[0006]

The first means of the present invention for achieving the above-mentioned first object is a control section for generating a high frequency magnetic field, and a heat generating section for generating heat by receiving the high frequency magnetic field generated by the control section. Is a separate body, and a space is provided between the control unit and the object to be cooked to form an induction heating heating element which serves as a control unit which is less susceptible to the radiant heat of the object to be cooked.

Further, the second means of the present invention comprises a heating element which is arranged farther from the induction section than the heating coil, and which is provided with a connecting section which obliquely connects the induction section and the heating element. Is widened and the heating efficiency is improved to be an induction heating heating element.

The third means of the present invention for achieving the above-mentioned second object has an induction heating element and an induction heating element above the induction heating element, and a net body provided with a space therebetween. In addition, the induction cooker can heat the food to be cooked in a non-contact manner, can perform good-quality cooking, and is less affected by radiant heat.

A fourth means of the present invention is that the induction coil provided above the induction heating element supplies electric power to a heater connected to the induction coil by a lead wire so that the position of the heater with respect to the mesh body is fixed. It is an induction heating cooker that can be set freely.

The fifth means of the present invention is an induction heating cooker in which the effect of radiant heat is reduced by interposing a heat insulating means between the cooking section and the induction heating heating element.

A sixth means of the present invention is an induction heating cooker in which water contained in an oil receiving means interposed between a cooking section and an induction heating heating element reduces radiant heat, and is easy to use. There is.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION (Embodiment 1) A first embodiment of the present invention will be described below. FIG. 1 is a block diagram showing the configuration of the induction heating heating element of this embodiment. FIG. 2 is a plan view illustrating the shape of the induction heating heating element of this embodiment. The induction heating heating element of the present embodiment includes a control unit 10 that generates a high-frequency magnetic field and a heating unit 15 that is arranged above the control unit 10. The heat generating part 15 is heated by induction heating while interlinking with the high frequency magnetic field generated by the control part 10. The control unit 10 includes a heating coil 11 that generates a high-frequency magnetic field, an inverter circuit 12 that supplies a high-frequency current to the heating coil 11, and an inverter control unit 13 that controls the output power of the inverter circuit 12. Moreover, the heat generating part 1
5 is composed of two layers made of a conductor, and the lower part, that is, the side close to the heating coil 11 is a disc-shaped guide part 16 made of a conductor having a low resistance. Guidance unit 16
A heating element 17 having a large number of slits 17a provided to increase the resistance value and made of a conductor thinner than the inducing portion 16 is disposed on the upper part of the.

The operation of this embodiment will be described below. When a power source (not shown) is energized, the control unit 10 starts operating and the heat generating unit 15 generates heat. That is, the inverter control means 13 controls the inverter circuit 12 to supply a high frequency current to the heating coil 11. The heating coil 11 receives this high frequency current and generates a high frequency magnetic field. This high-frequency magnetic field interlinks with the heating portion 15 provided on the heating coil 11. Therefore, an eddy current flows in the heat generating portion 15. Since the eddy current is electrically connected to the induction section 16 and the heating element 17, the eddy current flowing in the induction section 16 flows to the heating element 17 as it is. Since the heating element 17 has a large resistance value, it also generates a large amount of heat.

Therefore, the object to be heated placed on the heating element 17 is cooked by the heat generated by the heating element 17.
At this time, the radiant heat received from the object to be heated by the control unit 10 is small because the distance between the control unit 10 and the object to be heated is equal to the sum of the thicknesses of the induction unit 16 and the heating element 17. .

As described above, according to this embodiment, the influence of the radiant heat received from the object to be heated by the control unit 10 can be reduced,
It is possible to realize an induction heating heating element with less heat deterioration of electric parts.

At this time, if the induction heating heating element has the structure shown in FIG. 3, the induction heating heating element with high heating efficiency can be obtained. That is, the heating area of the heating element 17 is widened, and the heating element 17 and the guiding portion 16 are obliquely connected by the connecting portion 18. The connecting portion 18 is the heating element 1
7. Like the guiding portion 16, it is made of a conductor. That is, by using the connecting portion 18 that obliquely connects the heat generating element 17 and the guide section 16, the heat generating area of the heat generating element 17 can be widened.

(Second Embodiment) Next, an induction heating cooker according to a second embodiment of the present invention will be described. FIG. 4 is a cross-sectional view showing this embodiment. In the present embodiment, the cooking unit 20 is arranged above the control unit 10. Cooking section 20
Has a net body 21 arranged above the induction heating element 15 with a space provided between the induction heating element 15 and the net 21.

The operation of this embodiment will be described below.
The food to be cooked placed on the net 21 is an induction heating element 15
It is cooked by receiving the heat of. At this time, since the food to be cooked is placed on the net 21, it is not in contact with the induction heating element 15. Therefore, according to the present embodiment, the control unit 1
If the heating value of the induction heating heating element 15 is increased by the control of 0, cooking by so-called high flame can be performed. In other words, it is possible to provide an induction heating cooker in which the cooking of the food to be cooked is good. Especially when the food to be cooked is meat, the meat juice generated during cooking is the net 21.
The condition that the meat is grilled together with the gravy does not occur because it will be dripped downward. In other words, it has a particularly effective configuration for the quality of the roasted meat. Further, according to the present embodiment, the radiant heat from the food to be cooked has little effect on the control unit 10. That is, since the net body 21 is arranged with a space provided from the heat generating portion 15, the distance from the control portion 10 is farther than that of the configuration of the first embodiment.

As described above, according to the present embodiment, the object to be cooked can be heated in a non-contact manner by the high flame of non-contact to perform good cooking, and the control unit 10 can reduce the influence of the radiant heat received from the object to be heated. It is possible to realize an induction heating cooker with less heat deterioration of electric parts.

If the induction heating cooker is configured as shown in FIG. 5, it is possible to realize an induction heating cooker in which the heat source can be freely arranged and the design is easy. 25 is the control unit 1
It is an induction coil that interlinks with the high-frequency magnetic field generated by the heating coil 11 that configures 0. A cooking unit 26 having a heater 27 and a net 21 is arranged on the induction coil 25. The heater 27 is made of a conductor,
It is connected to the induction coil 25 by a lead wire. Therefore, the arrangement position of the heater 27 can be freely set by changing the length of the lead wire to be connected. That is, in FIG. 5, the heater 27 is arranged below the mesh body 21, but the structure arranged above the mesh body 21 can be easily realized.

With the above configuration, the heater 27 is the induction coil 2
The electric power supplied from 5 generates heat and heats the food to be cooked arranged on the net 21.

If the induction heating cooker is configured as shown in FIG. 6, it is possible to realize an induction heating cooker in which the influence of radiant heat is further reduced. Reference numeral 30 is a heat insulating material such as glass wool. The heat insulating material 30 includes grooves 30a and 30b. When the cooking unit 20 is placed on the heat insulating material 30, the groove 3
0a and 30b will have an air layer. Therefore, the heat generated in the cooking unit 20 is thermally insulated by the heat insulating material 30 and the control unit 10
The effect on will be very small.

When the induction heating cooker is constructed as shown in FIG. 7, the effect of radiant heat can be reduced and the induction heating cooker can be easily used. 3
Reference numeral 5 denotes an oil receiving means provided between the cooking section 20 and the control section 10, which stores water during cooking.

The meat juice or the like generated from the food to be cooked does not drip into the oil receiving means 35 containing water in advance and does not stain the surrounding area. After cooking, it can be easily cleaned together with the stored water. In particular, the water contained in the oil receiving means 35 acts so as to absorb the radiant heat of the cooking section 20, and the influence of the radiant heat on the control section 10 is reduced.

[0025]

The first means of the present invention is a control unit for generating a high frequency magnetic field, comprising a heating coil, an inverter circuit for supplying a high frequency current to the heating coil, and an inverter control means for controlling the output power of the inverter circuit. A heating unit that generates heat by receiving a high-frequency magnetic field generated by the control unit, the heating unit including an induction unit magnetically coupled to the heating coil and a heating element connected to the induction unit and having a large resistance value. As a result, it is possible to realize an induction heating heating element that can perform good-quality cooking and that the control unit receives less radiant heat during heating.

In the second means of the present invention, in particular, the heat generating part is provided with a heating element disposed farther from the heating coil than the induction section, and a connecting section obliquely connecting the induction section and the heating element. With this configuration, an induction heating heating element having a wider heating portion and improved heating efficiency is realized.

Further, a third means of the present invention is an induction heating heating element which constitutes the first means or the second means of the present invention,
The induction heating heating element has a structure having a net body arranged with a space provided above the induction heating heating element, so that the object to be cooked can be heated in a non-contact manner, and good-quality cooking can be performed.
It also realizes an induction heating cooker that is less affected by radiant heat.

A fourth means of the present invention is a control section for generating a high frequency magnetic field, which has a heating coil, an inverter circuit for supplying a high frequency current to the heating coil, and an inverter control means for controlling the output power of the inverter circuit, and a control section. The induction coil is provided with an induction coil for supplying electric power by receiving a high-frequency magnetic field generated by the section, and a cooking section provided above the induction coil. The cooking section has a heater connected to the induction coil by a lead wire, and a mesh body. As a configuration, the position of the heater with respect to the net can be freely set, and an induction heating cooker with an easy design is realized.

The fifth means of the present invention is particularly characterized in that a heat insulating means is interposed between the cooking section and the induction heating heating element.
It is intended to realize an induction heating cooker in which the influence of radiant heat is reduced.

In the sixth means of the present invention, an oil receiving means for accommodating water and receiving oil or the like generated from the object to be cooked is interposed between the cooking section and the induction heating element, especially during cooking. As a configuration, the radiant heat is reduced and an easy-to-use induction heating cooker is realized.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an induction heating heating element which is a first embodiment of the present invention.

FIG. 2 is a plan view showing the shape of the induction heating element.

FIG. 3 is a perspective view showing a structure of an induction heating heating element having a structure including a connecting portion.

FIG. 4 is a block diagram showing a configuration of an induction heating cooker that is a second embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration provided with an induction coil of the same.

FIG. 6 is a block diagram showing a structure provided with a heat insulating material.

FIG. 7 is a block diagram showing a configuration in which oil receiving means is provided.

FIG. 8 is a block diagram showing a configuration of a conventional electromagnetic cooker.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Control part 11 Heating coil 12 Inverter circuit 13 Inverter control means 15 Exothermic part 16 Induction part 17 Exothermic body 18 Connection part 21 Net body 25 Induction coil 26 Cooking part 27 Heater 30 Heat insulation means 35 Oil receiving means

Claims (6)

[Claims] 1. A control unit for generating a high frequency magnetic field having a heating coil, an inverter circuit for supplying a high frequency current to the heating coil, and an inverter control means for controlling output power of the inverter circuit, and a high frequency magnetic field generated by the control unit. An induction heating heating element comprising: a heating section that receives and generates heat, the heating section including an induction section magnetically coupled to the heating coil and a heating element connected to the induction section and having a large resistance value. 2. The induction heating heat generation according to claim 1, wherein the heating portion has a heating element arranged farther from the heating coil than the induction portion, and has a connecting portion obliquely connecting the induction portion and the heating element. body. 3. An induction heating cooker comprising: the induction heating heating element according to claim 1 or 2; and an induction heating heating element having a net body provided above the induction heating heating element with a space provided therebetween. 4. A control unit for generating a high frequency magnetic field having a heating coil, an inverter circuit for supplying a high frequency current to the heating coil, and an inverter control means for controlling output power of the inverter circuit, and a high frequency magnetic field generated by the control unit. An induction heating cooker comprising: an induction coil for receiving and supplying electric power; and a cooking section provided above the induction coil, the cooking section having a heater connected to the induction coil by a lead wire and a mesh body. 5. The induction heating cooker according to claim 4, wherein a heat insulating means is interposed between the cooking section and the induction heating heating element. 6. The induction heating according to claim 4 or 5, wherein an oil receiving means for accommodating water and receiving oil or the like generated from an object to be cooked is interposed between the cooking section and the induction heating heating element during cooking. Cooking device.