JP2007299579A - Induction-heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent that a restriction occurs such that warming cooking by a radiant heater at the rear center part can not be made while using heaters of electric resistance type for roaster and it is not use-friendly. <P>SOLUTION: A heater at the center inner part is made a burner of induction heating type, thereby simultaneously using all the burners even at the time of using heaters of electric resistance type for roaster. <P>COPYRIGHT: (C)2008,JPO&INPIT

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. 3, a flat top plate 1 made of a nonmetal such as glass is placed on the top surface of the main body, and about 10 mm below the top plate 1. A heating coil for performing induction heating on a load such as a pan through the space, an electric heater for performing resistance heating, and the like are arranged. As shown in FIG. 3, these heating sources are arranged with a front left induction heating coil 2 and a front right heating coil 3 for induction heating on the left and right sides of the front surface, respectively. A radiant heater 20 is provided for heating. Below the induction heating coil, a roaster 6 for grilling fish or the like is disposed on one of the left and right sides, and an electric resistance heater is disposed inside the roaster 6. In addition, power control of the inverter 5 for supplying high-frequency power to the front left induction heating coil 2 and the front right induction heating coil 3 and the electric resistance type heater for the roaster 6 is performed on the side surface of the roaster 6. The control part 7 is arrange | positioned (for example, refer patent document 1).
JP 2001-196153 A

  However, in the conventional configuration, since the radiant heater is controlled to be turned on and off at the maximum power, when the electric resistance heater for the roaster 6 and the radiant heater are used at the same time, the total amount of electric power is about 3 kW. For example, in an induction heating cooker having a total power amount of 4.8 kW, the remaining 1.8 kW is divided into a front left induction heating coil and a front right induction heating coil. For this reason, it is not possible to cook sufficiently, and it is designed to prohibit simultaneous use of an electric resistance heater and a radiant heater for the roaster. For this reason, while using the electric resistance type heater for the roaster, there is a problem that heat insulation cooking cannot be performed with the radiant heater at the center of the rear, and there is a problem that usability deteriorates.

  The present invention solves the above-mentioned conventional problems, and is arranged in the induction heating coil arranged in the front left part of the main body, the induction heating coil arranged in the front right part of the main body, and the rear center part of the main body. Inductive heating coil, Inverter supplying high-frequency current to induction heating coil, and roaster with electric resistance heating means, and using induction heating coil instead of conventional radiant heater, induction heating coil is continuous It is an object of the present invention to provide an induction heating cooker that is easy to use because the total amount of power can be reduced and the power limit for simultaneous use can be reduced.

  In order to solve the conventional problems, an induction heating device according to the present invention includes a main body, an induction heating coil disposed at a front left portion of the main body, and an induction heating coil disposed at a front right portion of the main body. , An induction heating coil disposed at the rear center of the main body, an inverter for supplying a high frequency current to the induction heating coil, a roaster having an electric resistance heating means, and outputs of the inverter and the electric resistance heating means It is set as the induction heating cooking appliance provided with the control part which controls.

  As a result, even if the electric resistance heater for the roaster and the induction heating coil arranged at the rear center of the main body are used at the same time, compared to the case of using the conventional radiant heater, Since the arranged induction heating coil can be continuously controlled, the total amount of electric power can be reduced, the power limit for simultaneous use can be reduced, and an easy-to-use induction heating cooker can be realized.

  The induction heating cooker of the present invention is an induction heating cooker provided with an electric resistance heater and all three induction heating coils, thereby reducing restrictions on simultaneous use and being easy to use. Can be realized.

  1st invention is a main body, the induction heating coil arrange | positioned in the front left part of the said main body, the induction heating coil arrange | positioned in the front right part of the said main body, and the induction arrange | positioned in the back center part of the said main body. A roaster comprising: a heating coil; an inverter that supplies a high-frequency current to the induction heating coil; a roaster having an electric resistance heating means; and a control unit that controls outputs of the inverter and the electric resistance heating means. Compared to the case where a conventional radiant heater is used even if the electrical resistance heating means and the induction heating coil arranged at the rear center part of the main body are used at the same time, the induction heating coil arranged at the rear center part of the main body However, since continuous control is possible, the total amount of power can be reduced, the power limit for simultaneous use can be reduced, and the induction heating cooker should be easy to use. It can be.

  In the second invention, when output is made to the electric resistance heating means, the control unit restricts the output to the inverter so as to be less than the rated value, thereby restricting the total electric energy when the heat source is used simultaneously. At the same time, priority is given to the amount of power of the roaster section, which often uses an automatic menu, so that the cooking performance can be stabilized and the induction heating cooker is easy to use.

  In the third aspect of the invention, when the output is made to the electric resistance heating means, the control unit outputs the output to the induction heating coil arranged at the rear center part of the main body so that the output to the inverter is lower than the rated value. By reducing the total amount of power when using the heat source at the same time and giving priority to the amount of power in the roaster section, which often uses an automatic menu, the cooking performance can be stabilized and the user-friendly induction heating cooker It is what.

  4th invention makes large-diameter cooking utensils, such as a fried food, by making the outer diameter of the induction heating coil arrange | positioned in the back center part smaller than the outer diameter of the induction heating coil of a front right part and a front left part. The induction heating coil suitable for cooking to be used is placed in front of the induction heating coil, which is required to cook using a pot with a relatively small outer diameter for cooking such as keeping warm and stewed. A good cooker can be realized.

  The fifth aspect of the invention is to cook for a short time with a high heating power such as fried food by making the rated power of the induction heating coil arranged in the rear center part smaller than the rated power of the induction heating coils of the front right part and the front left part. Because the induction heating coil that requires cooking for a long time with low heating power, such as heat insulation and stew, is placed behind the induction heating coil that requires heating, it is possible to realize an easy-to-use cooker is there.

  In the sixth aspect of the invention, the minimum outer diameter of the pan that can be heated by the induction heating coil disposed in the rear center portion is smaller than the minimum outer diameter of the pan that can be heated by the induction heating coils in the front right portion and the left front portion. By doing so, the range of pots that can be used can be expanded, and an easy-to-use cooker can be realized.

  In a seventh aspect of the invention, in the cooking pan having a small heat capacity and a small pot diameter, the minimum power amount of the induction heating coil disposed in the rear center portion is made smaller than the minimum power of the induction heating coil in the front right portion or the left portion. Since the heating power can be finely set, a user-friendly cooker can be realized.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 is a diagram showing the configuration of the induction heating cooker according to the first embodiment of the present invention, and FIG. 2 is a diagram showing the connection of each component.

  In FIG. 1, a flat top plate 1 made of non-metal such as glass is placed on the top surface of the main body 8, 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 front left induction heating coil 2 and a front right induction heating coil 3 disposed on the left and right in front of the main body, and a central back induction heating coil 4 is disposed at the center back. . A roaster 6 having an electric resistance heater, an inverter 5 for supplying high-frequency power to the induction heating coil, and a control unit 7 for controlling the amount of power of the inverter 5 and the roaster 6 are disposed below the induction heating coil. Is done.

  As shown in FIG. 2, an inverter 5 is connected to the front left induction heating coil 2, the front right induction heating coil 3, and the central back induction heating coil 4, and the control unit 7 gives a power command to the inverter. The amount of power is controlled. Further, the electric energy of the electric resistance heater for the roaster 6 is controlled by the control unit 7 by turning on / off the electric resistance heater in the roaster 6.

  By the way, since the control of the electric resistance heater for the roaster 6 is control by turning on and off the heater, it is necessary to secure the maximum power of the roaster when using the roaster. On the other hand, in the induction heating coil, the input power amount can be set continuously. Therefore, there is a feature that the power amount necessary for heating may be ensured. Here, since the induction heating coil in the center rear part is far from the user, the cooking is usually performed continuously and with low thermal power such as stew and heat retention. A situation is desired in which a heater is used and an induction heating coil at the center back is used. Moreover, in the front left part induction heating coil 2 and the front right part induction heating coil 3, the use condition which cooks high thermal power, such as a fried food, is desired.

  Therefore, instead of the conventional radiant heater, an induction heating coil is provided in the central back, so that continuous power control becomes possible. Even when the electric resistance heater for the roaster 6 is used, the central back By reducing the output of the induction heating coil, it is possible to use the electric resistance heater for the roaster 6 and the induction heating coil at the center back at the same time. Moreover, since electric power can be changed continuously, it becomes possible to improve cooking performance compared with the conventional radiant heater.

  In addition, when using the electric resistance type heater for the roaster 6, not only the output of the induction heating coil at the center rear part may be reduced, but also the output of the left and right induction heating coils may be reduced, The outputs of the front left and right induction heating coils and the induction heating coil at the back of the center may be reduced. When the output is applied to the heater of the roaster, the control unit makes the output to the inverter less than the rated value. If the situation of simultaneous use is maintained, there is no problem.

  In addition, as the induction heating coil shape, frying pan cooking such as fried food is often performed by the induction heating coil in the front, and cooking such as heat insulation is often performed by the induction heating coil in the central back part. It is desirable that the diameter be smaller than the outer diameter of the induction heating coils at the front right part and the front left part. Therefore, it is desirable that the outer diameter of the central back induction heating coil 4 is smaller than the outer diameters of the front left induction heating coil 2 and the front right induction heating coil 3.

  By the way, it is better that the outer diameter of the induction heating coil is substantially the same as the outer diameter of the pan disposed on the top plate 1 in general. Moreover, when high heating power is put into an induction heating coil having a small outer diameter, the heating distribution is further deteriorated and the cooking performance tends to be deteriorated. Therefore, since the front left part induction heating coil 2 and the front right part induction heating coil 3 have high heating power and the center back part induction heating coil 4 has low heating power, the outer diameter of the induction heating coil arranged in the rear center part. Is preferably smaller than the outer diameter of the induction heating coils at the front right part and the front left part. Therefore, in the rated power, it is desirable that the rated power of the induction heating coil at the back of the center is smaller than the rated power of the induction heating coils in the front right part and the front left part.

  Furthermore, by making the minimum outer diameter of the pan that can be heated by the induction heating coil disposed in the rear center part smaller than the minimum outer diameter of the pan that can be heated by the induction heating coils of the front right part and the front left part, Since it becomes possible to heat a pot with a smaller pot diameter, it is possible to improve usability.

  In addition, finer power control is achieved by making the minimum power of the central back induction heating coil 4 having a small outer diameter of the induction heating coil smaller than the minimum power of the front left induction heating coil 2 and the front right induction heating coil. Therefore, it becomes possible to improve usability.

  As described above, in the present embodiment, the induction heating cooker having induction heating coils in the front left and right and in the center back and provided with the roaster by the electric resistance heating means is provided in the roaster and the center back. Even if the induction heating coil is used at the same time, compared to the case of using a conventional radiant heater, the induction heating coil provided at the back of the center can be controlled continuously. Therefore, it is possible to reduce the power limit for the induction heating cooker.

  As described above, the induction heating cooker according to the present invention can provide an induction heating cooker with a roaster function, which is composed of all induction heating type burners. The present invention can also be applied to uses such as an induction heating cooker with a roaster function, which is composed of the above-described induction heating type burner.

The figure which shows the structure of the induction heating cooking appliance of the 1st Embodiment of this invention. The figure which shows the connection of the component of the 1st Embodiment of this invention The figure which shows the structure of the cooking device of the conventional induction heating cooking device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Top plate 2 Front left part induction heating coil 3 Front right part induction heating coil 4 Center back part induction heating coil 5 Inverter 6 Roaster 7 Control part 8 Main body

Claims (7)

A main body, an induction heating coil disposed at a front left portion of the main body, an induction heating coil disposed at a front right portion of the main body, an induction heating coil disposed at a rear center portion of the main body, and the induction An induction heating cooker comprising: an inverter that supplies a high-frequency current to a heating coil; a roaster having an electric resistance heating unit; and a control unit that controls outputs of the inverter and the electric resistance heating unit. The induction heating cooker according to claim 1, wherein when the output is performed to the electric resistance heating means, the control unit limits the output to the inverter to be less than the rating. When output is made to the electric resistance heating means, the control unit reduces the output to the induction heating coil arranged in the rear center part of the main body so that the output to the inverter is below the rating. The induction heating cooker according to claim 1. The induction heating cooker of any one of Claims 1-3 which makes the outer diameter of the induction heating coil arrange | positioned in the back center part smaller than the outer diameter of the induction heating coil of a front right part and a front left part. The induction heating cooker of any one of Claims 1-4 which makes rated power of the induction heating coil arrange | positioned in back center part smaller than the rated power of the induction heating coil of a front right part and a front left part. The minimum outer diameter of the pan that can be heated by the induction heating coil disposed in the rear center portion is made smaller than the minimum outer diameter of the pan that can be heated by the induction heating coils in the front right portion and the left front portion. The induction heating cooker according to any one of the above. The induction heating cooker of any one of Claims 1-6 which makes the minimum electric energy of the induction heating coil arrange | positioned at the back center part smaller than the induction heating coil minimum electric power of the front right part or the left part.