JP2014116087A - Induction heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve safety in a manner such that a heating operation is conducted when a heating plate for cooking of a grill unit is placed on a bottom plate and the heating operation is not conducted when the heating plate for cooking is placed on a top plate for heating a heated cooking container.SOLUTION: In an induction heating cooker, by differentiating a distance a between a heating plate 9 of a grill unit for cooking and a second heating coil 6 when the heating plate for cooking is placed on a bottom plate from a distance b between the heating plate 9 for cooking and a heating coil 4 when the heating plate 9 for cooking is placed on a top plate 2, a heating operation is conducted when the heating plate 9 for cooking is placed on a bottom plate 11 but the heating operation is not conducted when the heating plate 9 for cooking is placed on the top plate 2 thereby to improve safety.

Description

  The present invention relates to a cooking device provided with a grill device, which is used in a kitchen of a general household, a commercial kitchen, or the like.

  Conventionally, the general configuration of the grill device in this type of heating cooker is that a cooking chamber is arranged in the grill device, a tray on which the food is placed is stored, and a resistance heating means such as a sheathed heater or a miraclon heater is used. A method of heating using Joule heat of a heating wire is common. The food placed in the tray in the cabinet is heated by radiant heat from the heating means arranged on the top surface of the cooking cabinet and conduction heat given to the tray by the heating means arranged on the bottom surface of the grill device (for example, patents). References 1 and 2).

JP 2010-267422 A JP 2011-33313 A

  However, in the conventional configuration, the lower heating body is generally heated by using Joule heat of a heating wire called a sheathed heater or a miraclon heater, and a cooking heating plate is placed on the grill. Or, the object to be heated was placed directly on the grill to cook. When cooking with the object to be heated placed directly on the grill, it was difficult and cumbersome to clean the grill after cooking and the dirt stuck in the cabinet. .

  For this reason, a heating cooker as shown in FIG. 6 has been proposed. The heating cooker of FIG. 6 includes a top plate 102 on which the cooking container 101 to be heated is placed, a main body 103 constituting the outer shell, and a heating means 104 that is located below the top plate 102 and heats the cooking container 101 to be heated. And the cooking chamber 107 located below the heating means 104, the upper heating body 105 and the lower heating body 106 are positioned above and below the cooking chamber 107, and the bottom plate 111 and the cooking chamber 107 are located on the bottom surface of the cooking chamber 107. An exhaust pipe 110 is provided above or behind the cooking heating plate 109 and the cooking chamber 107 provided in a removable manner, and a grill door 112 is provided at an opening through which the cooked food 108 is taken in and out.

  In addition, although not shown, a control circuit, a drive circuit, and a cooling fan arranged inside the main body 103 and an operation unit are arranged in front of or above the main body 103.

  However, in this case, the heat from the lower heating body 106 heats the bottom plate 111 composed of a glass plate or the like below the cooking chamber 107 through the air layer, and transfers the heat to the cooking heating plate 109 on which the food 108 is placed. Since the bottom surface of the cooked product 108 is baked, there is a large amount of energy that escapes before the heat of the heater reaches the cooked product 108, resulting in a problem that the thermal efficiency is deteriorated. Further, even when an operation other than the attached cooking heating plate 109 is inserted into the cooking chamber 107 and the operation is started, the operation is continued as it is, and thus the cooking performance and safety may be deteriorated.

The present invention solves the above-described conventional problems. The lower heating body 106 is constituted by a grill heating coil that performs induction heating, thereby improving the cleaning performance and thermal efficiency, and the attached cooking heating plate 109 is provided. An object of the present invention is to provide a highly safe cooking device that operates when used, but is placed on the top plate 102 and is not heated even when the heating means 104 starts operating.

  In order to solve the above-mentioned conventional problems, an induction heating cooker according to the present invention includes a main body constituting an outer shell, a top plate on which a cooked cooking container is placed, and the cooked food that is located below the top plate. A first heating coil for inductively heating the container; and a grill device provided in the main body. The grill device includes a second heating coil provided below the grill device; and the second heating coil. A cooking plate when the cooking plate is placed on the bottom plate, and a cooking plate placed on the bottom plate and a cooking plate placed on the bottom plate. The distance between the second heating coil and the distance between the cooking heating plate and the first heating coil when the cooking heating plate is placed on the top plate are different from each other. .

  As a result, the cleaning performance and thermal efficiency are improved, and when the attached cooking heating plate is used in the grill device, the heating operation is performed, and when the cooking heating plate is placed on the top plate, the heating operation is not performed. As a result, safety can be improved.

  According to the present invention, in the induction heating cooker provided with the induction heating grill device, when the attached cooking heating plate is used in the grill device, the heating operation is performed, and the induction heating cooker on the top surface does not perform the heating operation. , Can increase safety.

Side surface sectional drawing of the induction heating cooking appliance in Embodiment 1 of this invention The perspective view of the heating plate for cooking attached to the induction heating cooking appliance in Embodiment 1 of this invention Schematic side cross-sectional view showing the positional relationship between a heating plate for cooking and a heating coil of the induction heating cooker in Embodiment 1 of the present invention. The flowchart in control of the 2nd heating coil of the induction heating cooking appliance in Embodiment 1 of this invention. The flowchart in control of the 1st heating coil of the induction heating cooking appliance in Embodiment 1 of this invention. Side sectional view of a conventional cooking device

  1st invention comprises the main body which comprises an outer shell, the top plate which mounts a to-be-heated cooking container, the 1st heating coil which is located under the said top plate and inductively heats the to-be-heated cooking container, A grill device provided in the body, and the grill device includes a second heating coil provided below the grill device, and a bottom plate provided so as to cover an upper side of the second heating coil. A cooking heating plate placed on the bottom plate, and a distance between the cooking heating plate and the second heating coil when the cooking heating plate is placed on the bottom plate, and the cooking When the attached cooking heating plate is used in the grill device by making the distance between the cooking heating plate and the first heating coil different when the cooking heating plate is placed on the top plate Is heated and the top of the top Since the heating coil can be prevented from operating, it is possible to provide a highly safe induction heating cooker.

  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)
Embodiment 1 of the present invention will be described with reference to FIGS.

  FIG. 1 is a side sectional view of an induction heating cooker according to the first embodiment of the present invention. As shown in FIG. 1, the top plate 2 on which the cooked cooking container 1 is placed, the main body 3 constituting the outer shell, and the first plate that is located below the top plate 2 and heats the cooked cooking vessel 1. A heating coil 4 and an upper heating body 5 that is located below the first heating coil 4 and is composed of a miraclon heater and a Korce heater are provided.

  The second heating coil 6 is constituted by an induction heating coil that performs induction heating, and a cooking chamber 7 is provided at the center of the upper heating body 5 and the second heating coil 6. A bottom plate 11 made of heat-resistant glass is provided on the lower surface of the cooking chamber 7, a cooking heating plate 9 is placed on the bottom plate 11, and a cooked product 8 is placed on the cooking heating plate 9. Cook.

  In addition, an exhaust tube 10 for exhausting air from the cooking chamber 7 is provided behind the cooking chamber 7, and a grill door 12 is provided at an opening through which the cooked food 8 is taken in and out.

  In this way, by using the heating coil as the lower heating means of the grill device, the cooking heating plate on which the food is placed is directly heated, so that the food can be efficiently heated. Therefore, cooking time can be shortened and energy saving performance can be improved.

  Further, since the cooking heating plate is directly heated by induction heating, the loss of heat escaping to the outside of the cooking chamber 7 is reduced, and in particular, the ambient temperature around the second heating coil 6 can be suppressed. It works to avoid an excessive temperature rise of the part, and works favorably in a temperature test considering the heat-resistant temperature of the part.

  Further, since the bottom plate 11 is not directly heated by induction heating, the temperature rise can be avoided as compared with the conventional heating cooker, and when the temperature detecting means is arranged on the bottom surface of the bottom plate 11, the sensing accuracy is improved. Can be planned.

  FIG. 2 is a perspective view of a cooking heating plate attached to the cooking device according to the first embodiment of the present invention.

  In FIG. 2, the cooking heating plate 9 is formed by insert molding in which aluminum is poured into a heating element of SUS430 which is a magnetic material. The cooking heating plate 9 is inclined so that the bottom surface of the cooking plate 9 has a wave so that oil from the food is not absorbed again by the food.

  Further, the heating element 13 has a slit shape so as to be positioned on the bottom surface of the corrugated concave portion of the cooking heating plate 9. Compared to a flat heating element with no slit, it not only leads to a lighter heating element, but also can reduce the aluminum on the convex part of the cooking heating plate, improving thermal efficiency and reducing cooking time. Shortening and cooking performance can be improved.

  FIG. 3 is a schematic side sectional view showing the positional relationship between the cooking heating plate and the heating coil of the cooking device according to the first embodiment of the present invention. FIG. 3A is a schematic side sectional view showing the distance between the cooking heating plate and the second heating coil when the cooking heating plate is placed on the bottom plate of the grill device, and FIG. It is the approximate sectional side view shown about the distance of the heating plate for cooking at the time of mounting the heating plate for cooking on a top plate, and the 1st heating coil.

In FIG. 3A, the distance between the second heating coil 6 and the cooking heating plate 9 when the cooking heating plate 9 is placed on the bottom plate 11 is a. In FIG. 3B, the distance between the first heating coil 4 and the cooking heating plate 9 when the cooking heating plate 9 is placed on the top 2 is b.

  When the cooking heating plate 9 is placed on the bottom plate 11, the distance between the heating coil that operates properly and the cooking heating plate 9 is a, and when the cooking heating plate 9 is placed on the top plate 2, Since the distance between the one heating coil 4 and the cooking heating plate 9 is not appropriate, it can be determined from the characteristics of the inverter output that the cooking heating plate has been placed on the top plate 2, and no heating operation is performed. I have to.

  The determination of whether or not heating is possible can be made based on the characteristics of the inverter output that varies depending on the cooked cooking container such as the cooking heating plate 9 and the pan.

  Next, it is necessary not to operate when the cooking heating plate 9 is placed on the top plate 2, but when a heated cooking container that can be heated is placed on the top plate 2, heating is necessary. . Therefore, it is necessary to set the distance b which can heat the to-be-heated cooking container which can be heated with the top plate 2. FIG.

  On the other hand, in the grill device, since it is necessary to heat only when the cooking heating plate 9 is placed, it is necessary to set a distance a that matches the characteristics of the cooking heating plate 9.

  Therefore, in order to heat appropriately by each heating means, by giving each appropriate distance a and distance b, when the cooking heating plate 9 is placed on the bottom plate 11, the heating is performed. When placed, it can be prevented from heating.

  In particular, the characteristics of the inverter output change depending on the distance between the heating coil and the object to be heated, and it is judged whether heating is possible or not, so a large effect can be obtained with a simple method of devising the setting of this distance. .

  The operation and action of the cooking device configured as described above will be described below.

  FIG. 4 is a flowchart in the control of the second heating coil of the cooking device according to the first embodiment of the present invention, and shows the operation when the grill device is operated.

  In the present embodiment, when the user starts grill cooking (step S1), the type of dish is determined from the inverter circuit based on the characteristics of the dish placed on the heating coil and the bottom plate of the cooking cabinet (step S2).

  The presence / absence of a dish is determined (step S3). Further, it is determined whether or not it is an attached cooking heating plate (step S4), and if it is an attached cooking heating plate, the operation is continued, otherwise it is stopped or displayed so that the user can know by an error message. To do.

  The presence / absence of the attached cooking heating plate is determined by the inverter based on the characteristics of the cooking heating plate in the present embodiment. Also, when a cooking heating plate that is not included is used in the grill device, the cooking performance and safety are expected to deteriorate, so that it is determined and not operated.

  When the attached cooking heating plate is placed on the bottom plate, cooking is continued (step S5), and the operation is stopped upon completion of the manual cooking setting timer or automatic cooking heating (step S6).

  FIG. 5 is a flowchart in the control of the first heating coil of the heating cooker according to the first embodiment of the present invention, and shows the operation when the induction heating cooker located on the top surface is operated.

  In this embodiment, when the user starts the top heating cooker (step SS1), the type of pan is determined from the inverter circuit based on the characteristics of the heating coil and the pan placed on the top (step SS2). .

  The presence / absence of a pan is determined (step SS3). If there is a pan, the heating is continued as it is. Further, it is determined whether it is a pan that can be heated with the top heating cooker (step SS4). If it is determined that heating is possible, the operation continues. In such a case, the operation is stopped, or an error message is displayed so that the user can understand.

  If a pan that can be heated by the top surface heating cooker is placed, cooking is continued (step SS5), and the operation is stopped when the manual cooking setting timer ends or the automatic cooking heating ends (step SS6).

  Thus, when the cooking heating plate is placed, the distance between the first heating coil and the cooking heating plate is different from the distance between the second heating coil and the cooking heating plate. If the cooking heating plate is placed on the grill device and grill cooking is performed, it will operate normally, but if the cooking heating plate is placed on the top heating cooker, it will not operate, so safety is high. A cooking device that does not deteriorate cooking performance can be provided.

(Embodiment 2)
In the present embodiment, in the first embodiment, the heating between the cooking heating plate 9 and the first heating coil 4 and the second heating coil 6 and the cooking heating plate 9 shown in FIG. It is a cooker.

  Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  Although it is conceivable for the user to place the cooking heating plate 9 used in the grill device on the top plate 2, it is not enough to place the heated cooking container used in the top plate 2 on the bottom plate 11 of the cooking cabinet. It is usually difficult to think because of the above problems and consciousness. That is, it is considered that when the food is set on the cooking plate 9 or after the cooking is finished, the cooking plate removed from the cooking chamber 7 by the user may be placed on the top plate 2.

  Accordingly, heating is performed when the cooking heating plate 9 is placed on the bottom plate 11, but priority is given to not heating when the cooking heating plate 9 is placed on the top plate 2.

  Here, the cooking heating plate 9 tends to be heated easily because the closer to the heating coil, the better the connectivity. Therefore, by setting a <b, if the heating plate for cooking 9 is placed on the bottom plate 11 of the cooking chamber, and the heating condition is appropriately set, the coupling becomes weak when placed on the top plate. Tilt in a direction that is difficult to heat. In addition, the heating plate for cooking according to the present embodiment is insert-molded in which SUS of magnetic material is embedded in aluminum, so that it is more magnetic than a cooked cooking container generally made of a magnetic material used for the top plate 2. Since it is weak, when the cooking heating plate is placed on the top plate, the position of the heating coil is not heated at a distance b, but it can be heated when the cooked cooking container is placed.

  In this embodiment, a = 5 mm and b = 10 mm. However, b needs to be set to 15 mm or less that can be heated by the heated cooking container of magnetic material.

  As described above, by giving appropriate distances a and b that satisfy a <b, the cooking heating plate 9 is heated when placed on the bottom plate 11, but is heated when placed on the top plate 2. You can avoid it.

  As described above, according to the induction heating cooker according to the present invention, the induction heating grill device is provided and operates when the attached cooking heating plate is used in the grill device, and the cooking heating plate is heated to be cooked. When placed on the top plate on which the container is placed, the heating operation is not performed, so that a highly safe induction heating cooker can be realized, which is effective for home and commercial induction heating cookers in general.

DESCRIPTION OF SYMBOLS 1,101 Cooked cooking container 2,102 Top plate 3,103 Main body 4 1st heating coil 5,105 Upper heating body 6 2nd heating coil 7,107 Cooking chamber 8,108 Cooking thing 9,109 Heating for cooking Plate 11,111 Bottom plate 13 Heating element 14 Aluminum

Claims (2)

A main body constituting the outer shell, a top plate on which the cooked cooking container is placed, a first heating coil that is positioned below the top plate and induction-heats the cooked cooking container, and provided in the main body A grill device, and the grill device is mounted on the bottom plate, a second heating coil provided below the grill device, a bottom plate provided to cover an upper side of the second heating coil, and A cooking heating plate, the distance between the cooking heating plate and the second heating coil when the cooking heating plate is placed on the bottom plate, and the cooking heating plate An induction heating cooker in which the distance between the cooking heating plate and the first heating coil when placed on a plate is different from each other. The cooking heating when the cooking heating plate is placed on the top plate, and the distance between the cooking heating plate and the second heating coil when the cooking heating plate is placed on the bottom plate The induction heating cooker according to claim 1, wherein the induction heating cooker is smaller than a distance between the plate and the first heating coil.