JP2013127329A - High frequency heating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten a cooking time and reduce power consumption by limiting a heating space in an oven-bake cooking by a heating system with a heater and a microwave heating element.SOLUTION: A high frequency heating apparatus has a heating space that is variable according to a size and the like of food 39 by using a heating means combined with a microwave heat generator 35 allowed to be disposed in any position inside a heating chamber 30 and an upper heater 38. Thus, a region inside the heating chamber 30 required for cooking can be preferentially heated, thereby shortening cooking time and reducing power consumption in an oven-bake cooking.

Description

  The present invention relates to oven cooking in which food is cooked by combining convection heat and radiant heat, and by using a microwave heating element that absorbs microwaves and generates heat as one of the heating means, the heating space in the heating chamber is reduced. The present invention relates to a high-frequency heating apparatus that can efficiently heat foods in a limited manner.

  In recent years, a high-frequency heating device in which a microwave oven and a heater heating device are integrated has been put into practical use. In these high-frequency heating devices, a heater is provided in the heating chamber, the air in the heating chamber is heated by radiant heat from the heater, and the temperature in the heating chamber is increased to cook food placed in the heating chamber. .

  A conventional high-frequency heating device has a configuration in which a heater is installed on the top and bottom surfaces of a heating chamber, and the food disposed therein is heated mainly by convection heating by heating the air in the heating chamber ( For example, see Patent Document 1).

  In addition, a saucer constructed by attaching a microwave heating element to the bottom surface of the food placing means is disposed in the heating chamber of the high-frequency heating device, and the food is heated mainly by radiant heat from the heater and heat from the microwave heating element. There exists a thing of the structure which performs the grill cooking which burns and burns on both surfaces (for example, refer patent document 2).

  The prior art will be described with reference to the drawings.

  FIG. 4 is a cross-sectional view of a high-frequency heating apparatus provided with a conventional upper and lower heater described in Patent Document 1.

  As shown in FIG. 4, the high-frequency heating device 50 includes an upper heater 57, a lower heater 55 a, a lower heater 55 b, an antenna 56, a tray 53, a metal heater cover 54, a heating chamber 52, and a thermistor 51. Food is put into the heating chamber, and the lower heater and the upper heater are energized to raise the temperature of the air in the heating chamber, thereby cooking the food in the oven. Further, the temperature can be controlled by detecting the temperature by the thermistor 51 and obtaining the temperature information in the heating chamber 52.

  FIG. 5 is a cross-sectional view of a high-frequency heating apparatus provided with a food placing means attached with a conventional microwave heating element, related to Patent Document 2. As shown in FIG. 5, cooking is performed using a food placing plate 64 to which a high-frequency heating element 61 is attached. Microwaves are radiated into the heating chamber by the high-frequency generation means 63 and the high-frequency dispersion means 62, and the heating means 60 By combining the top surface heating of the food by radiant heat and the bottom heating of the food by the heat generation of the high-frequency heating element 61, grill cooking that heats both sides of the food can be performed, and the color and burnt can be made.

JP 2006-308114 A JP 2003-222335 A

  However, in the conventional high-frequency heating apparatus equipped with the upper and lower heaters, the heaters are arranged at the top and bottom of the heating chamber, so that when heating in the oven, the entire heating chamber is heated as a heating space regardless of the amount of food and the position of the food. There is a need to. Originally, since heating is performed up to a region that does not need to be heated, it takes time to raise the temperature of the heating space, leading to an increase in cooking time. In addition, since the lower heater is located under the tray cradle on the bottom of the cabinet, the amount of heat generated from the lower heater is used to raise the temperature of food placing means, the pan cradle on the bottom of the heating chamber, the heater guard, etc. As compared with the case where the air is directly heated like the upper heater, the loss is increased. Furthermore, the longer the distance between the lower heater and the food placement position, the longer the time required for temperature rise. For these reasons, cooking time and power consumption have been increased.

  In addition, in a high-frequency heating device equipped with a food placing tray with a microwave heating element attached, the microwave heating element is used only for grill cooking, and is mainly used for cooking foods only by radiant heating. Met. Therefore, it has not been used for cooking by a combination of radiation heating and convection heating that heats the air in the heating chamber as in oven cooking. In addition, there is no means to control the cooking temperature by detecting the temperature of the food or the heating chamber during grill cooking, so the problem is that preheating required for oven cooking and heating cooking that keeps the temperature constant cannot be performed. Had.

  The present invention solves the above-described conventional problems, and a heating method using a heater and a microwave heating element enables a cooking time to be shortened and power consumption to be reduced by limiting a heating space in oven cooking. The purpose is to provide.

  In order to solve the above-described problems, a high-frequency heating device according to the present invention includes a heating chamber for storing food, microwave heating means for irradiating microwaves in the heating chamber, and a first heating provided in the upper portion of the heating chamber. Means, a second heating means configured by a microwave heating element that absorbs microwaves and generates heat without the need for power supply disposed in the heating chamber, and the second heating means integrated with each other Food placing means constituted, arrangement means for placing the food placing means in a heating chamber, microwave heating means, and temperature control means for the first and second heating means, In the heating chamber, the arrangement position of the second heating means can be arbitrarily changed.

  As a result, the food is cooked in a region surrounded by the microwave heating element, the upper heater, and the heating chamber wall in the heating chamber, so that the entire heating chamber is heated as in the case where the conventional upper and lower heaters are provided. In comparison, cooking time can be shortened and power consumption can be reduced.

  Furthermore, since the microwave heating element absorbs microwaves and generates heat by itself, heating performance can be obtained without depending on the distance from the bottom surface of the heating chamber.

  In addition, by providing the temperature control means having the temperature detection unit, it is possible to perform preheating required for oven cooking and heat cooking performed while keeping the temperature constant.

The high-frequency heating device of the present invention is a combination of the first heating means and the microwave heating element as the second heating means as the heating means, and the microwave heating element can be arbitrarily arranged inside the heating chamber, The heating space surrounded by the upper heater, the microwave heating element, and the heating chamber wall can be arbitrarily changed. Therefore, when the food is heated, only the necessary region, not the entire heating chamber, can be heated, and cooking time can be shortened and power consumption can be reduced. Further, the distance between the first heating means and the food can be set to an optimum position in the oven cooking depending on the size and type of the food. Furthermore, since the second heating means absorbs microwaves and generates heat, it is possible to perform heating regardless of the distance between the bottom surface of the heating chamber and the food placement position, unlike heating by a normal lower heater. The cooking time can be shortened and the power consumption can be reduced by optimizing the heating space according to the type of food.

External appearance perspective view of the high frequency heating device in Embodiment 1 of the present invention Sectional drawing of the front-back direction in the heating chamber inside the high frequency heating apparatus in Embodiment 1 of this invention Sectional drawing of the left-right direction in the heating chamber inside the high frequency heating apparatus in Embodiment 1 of this invention Sectional view of a conventional high-frequency heating device Sectional drawing of the grill cooking high frequency heating device provided with the conventional microwave heating element

  1st invention is arrange | positioned in the said heating chamber inside the heating chamber which accommodates a foodstuff, the microwave heating means which irradiates a microwave in the said heating chamber, the 1st heating means provided in the said heating chamber upper part A second heating means constituted by a microwave heating element that absorbs microwaves and generates heat, and a food placing means constituted integrally with the second heating means. An arrangement means for arranging the food placing means in a heating chamber; a microwave heating means; and a temperature control means for the first and second heating means, wherein the second heating means is provided in the heating chamber. By configuring the arrangement position of the food to be arbitrarily changeable, the heating space is limited, and the food and the surrounding air are efficiently heated, so that the cooking time and power consumption can be reduced. Can do.

  In the second invention, in particular, the temperature control means of the first invention includes the temperature detection unit, so that the temperature information of the heating chamber and the food detected by the temperature detection unit during cooking is obtained. It becomes possible to control the first and second heating means, and it is possible to realize a preheating process necessary for oven cooking and cooking for heating while keeping the temperature constant.

  According to a third aspect of the present invention, in particular, in the first aspect, the food placing means is made of a metal material that blocks microwaves, so that the microwaves directly absorbed by the food can be reduced. The cooking performance can be improved.

  The fourth aspect of the invention is such that, in any one of the first to third aspects of the invention, only the first heating means is used in the state where the second heating means is taken out of the heating chamber during oven cooking preheating. Thus, the first heating means can directly heat the heated indoor air, and since there is little heat loss lost due to the temperature rise of the other members, the preheating completion time can be shortened and the energy consumption can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Configurations unique to each embodiment of the present invention can be combined as appropriate. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is an external perspective view of a high-frequency heating device 20 according to the first embodiment of the present invention.

  In FIG. 1, the high-frequency heating device 20 includes a casing 21, a door portion 22, and the like, and an operation unit 24 that inputs information on heating conditions and food in a part of the casing, and the input content and cooking progress status, A display unit 23 for displaying food information is attached.

  2 is a cross-sectional view in the front-rear direction of the heating chamber 30 inside the high-frequency heating device 20 shown in FIG.

  In FIG. 2, the high-frequency heating device 20 includes a heating chamber 30 and an upper heater 38 as a first heating means as a heating means, and a microwave heating element 35 as a second heating means. It is configured integrally with the food placing means 36 which is a placing means for the food 39. Further, as a microwave heating means, there are an antenna 31 and a magnetron 32, which perform microwave radiation and stirring into the heating chamber 30. The heating control unit includes a temperature detection unit 37 and a temperature control unit 34.

  Here, the antenna 31 and the magnetron 32 as the microwave heating means are disposed further below the dish receiving table 33 disposed below the heating chamber 30.

  In oven cooking, the height and surface area vary greatly depending on the type of food 39. For example, sponge cake and chunky meat have a large surface area and a high food height. In contrast, cookies and madeleine have a small surface area and a low food height. For these reasons, the heating space is optimized by shortening the cooking time by making the distance between the upper heater 38 and the surface of the food 39 during cooking optimum length according to the type and size of the food 39. Reduction of power consumption can be realized.

  Moreover, the temperature detection part 37 and the temperature control means 34 acquire the temperature information in the heating chamber, and perform cooking by performing on-off control or output control of the upper heater 38, the magnetron 32, and the like for the internal temperature control. Improved performance can be realized.

  The food placing means 36 is made of a metal material. Since the metal material blocks microwaves, the amount of microwaves directly absorbed by the food 39 can be reduced. In pudding, madeleine, shoe skin, sponge cake, etc. in oven cooking, when the amount of microwaves directly absorbed by the food 39 is large, the internal moisture evaporates and the amount of moisture rapidly decreases, resulting in a loss of taste. In particular, in pudding cooking etc., concentrated heating spots are generated inside, and nests are formed, leading to a reduction in cooking performance.Therefore, by reducing the amount of microwaves absorbed directly into food, Improvements can be realized.

  Further, with respect to the configuration of the heating chamber 30 and the food placing means 36, the microwave is placed on the food placing means 36 when the food placing means 36 is disposed in the heating chamber 30 so that the microwave does not wrap around and is not directly absorbed by the food 39. The food mounting means 36 and the heating chamber 30 are configured so that there is no gap around the mounting surface side of the food 39 in 36, or a shield that closes the gap is attached, or a microwave heating element By changing the composition, the amount of microwave wrapping around the food placement surface can be reduced.

  Moreover, in order to obtain a certain cooking performance at the time of oven cooking, what is necessary is just to set it as the structure which the microwave wraparound electric energy becomes 100 W or less. Furthermore, by reducing the amount of electric power that wraps around the microwave, it is possible to suppress sparks between the food placing means 36 and the metal mold or between the heating chambers 30 even when food is put in a metal mold and cooked. is there.

  Further, it is desirable that the food placing means 36 has a flat surface in contact with the food 39. In the oven cooking, the heat receiving area of the amount of heat generated from the microwave heating element 35 with respect to the food 39 is increased, so that the heating efficiency is improved, and the cooking time and power consumption can be reduced. Furthermore, it is possible to realize an improvement in cooking performance such as obtaining a uniform baking color on the heated food 39.

  Further, the food placing means 36 can be provided with water repellency and oil repellency by providing minute irregularities on the surface thereof. Oil, moisture, dirt and the like generated during the cooking process of the food 39 can be easily removed.

  The upper heater 38 serving as the first heating means is not limited to a tube heater, and a surface heater or the like can provide the same heating effect.

  For the microwave heating element 35 as the second heating means, a ferrite powder or the like is used as a magnetic material, and a composite composition containing this magnetic material in a binder made of an organic compound such as silicone rubber is used. good. Since silicone rubber is excellent in dispersibility with ferrite powder, a large amount of ferrite powder can be contained, and heat generation performance can be enhanced. Further, by crosslinking the silicone rubber with a crosslinking agent, high heat resistance and excellent chemical resistance can be exhibited.

  Further, when the microwave heating element 35 is affixed to the food placing means 36, it can be adhered by pressure bonding with a press machine or the like.

  Moreover, it is desirable that the microwave heating element 35 as the second heating means is affixed to the mounting means with as wide an area as possible. As an example, when a plurality of foods 39 in a mold are laid down on the mounting means and the heating element is attached to the mounting means, the heating unevenness becomes strong and biased to the finished cooking performance. Will occur. Therefore, some foods 39 have poor cooking performance. Therefore, by sticking in a wider area, it is possible to reduce heating unevenness and improve cooking performance.

  FIG. 3 is a cross-sectional view in the left-right direction in the heating chamber inside the high-frequency heating device according to the first embodiment of the present invention, and a cross-sectional view in the left-right direction in the heating chamber 30 inside the high-frequency heating device 20 shown in FIG. It is.

  In FIG. 3, the arrangement means 41a and the arrangement means 41b are rail-like ones provided on the heating chamber wall, but are retrofitted like a support or attachment provided on the food placing means 36 itself. A support member may be used. Further, if the height can be set more finely, an optimum heating space can be set by heating various foods 39.

  As for microwave heating means, the antenna 31 is presented as microwave stirring means in the heating chamber. If microwaves can be radiated and stirred in the heating chamber, an opening is provided in the waveguide 40 instead of the antenna 31. Direct radiation from the opening may be used.

  As described above in detail, since the high-frequency heating device according to the present invention can perform oven cooking with a removable microwave heating element and a heater and limit the heating space, the conventional type having microwave heating means is provided. It is effective for the use of large commercial high frequency heating equipment.

DESCRIPTION OF SYMBOLS 20 High frequency heating apparatus 21 Case 22 Door part 23 Display part 24 Operation part 30 Heating chamber 31 Antenna 32 Magnetron 33 Dish stand 34 Temperature control means 35 Microwave heating element 36 Food placing means 37 Temperature detection part 38 Upper heater 39 Food 40 Waveguide 41a, 41b Arranging means

Claims (4)

A heating chamber for storing food,
Microwave heating means for irradiating the heating chamber with microwaves;
A first heating means provided in the upper part of the heating chamber;
There is no need for power supply arranged in the heating chamber, and a second heating means constituted by a microwave heating element that absorbs microwaves and generates heat;
Food placing means configured integrally with the second heating means;
Disposing means for disposing the food placing means in a heating chamber;
The microwave heating means, and temperature control means of the first and second heating means,
A high-frequency heating apparatus capable of arbitrarily changing the arrangement position of the second heating means in the heating chamber. The high-frequency heating device according to claim 1, wherein the temperature control means includes a temperature detection unit. The high-frequency heating device according to claim 1, wherein the food placing means is made of a metal material that blocks microwaves. The high-frequency heating apparatus according to any one of claims 1 to 3, wherein the oven heating preheating is performed only by the first heating means in a state where the second heating means is taken out from the heating chamber.