JP6016832B2 - Microwave cookware - Google Patents

Description

  The present invention relates to a cooking utensil using microwaves.

  A microwave oven, that is, a so-called microwave oven, is widely used as a cooking utensil that can easily heat ingredients without using fire. Since the microwave oven directly heats the moisture in the food, the energy efficiency is high, but when the moisture decreases, the temperature hardly rises.

  Therefore, Patent Document 1 discloses a high-frequency cooking device (tray) used for cooking in a microwave oven. The cooking utensil (tray) is not overheated by adding ferrite as a microwave absorber so that the cooking utensil (tray) itself generates heat, and further setting the Curie temperature of the ferrite to 250 to 300 ° C. It is configured as follows. That is, the cooking utensil (tray) has magnetism up to the Curie temperature of 250 to 300 ° C., and the cooking utensil (tray) generates heat by the microwave irradiation, and the Curie temperature exceeds 250 to 300 ° C. The safety is improved by eliminating the heat and no heat. Patent Document 2 and Patent Document 3 also show a dish (tray) as a cooking utensil used in a microwave oven, similar to Patent Document 1.

  On the other hand, in Patent Document 4, the microwave-absorbing heating element is made into a net-like shape, surrounded by an insulator frame having legs, and used in a microwave oven, so that cooking on the grilled meat etc. is possible. The cookware is shown. Further, Patent Document 5 shows that a heating element in which a carbide (an example of pulverized coal is also included in paragraph 0092) is mixed in an inorganic material is used for electromagnetic cooking.

JP 2014-32842 A JP2013-111107A International Publication No. 2011/114646 JP-A-9-285393 JP 2004-202141 A

  However, since all of the above-described conventional techniques are used in a microwave oven, they cannot touch food during cooking. On the other hand, as with microwave ovens, IH (electromagnetic induction heating) cooking heaters are widely used as cooking utensils with high energy efficiency without using fire by using electromagnetism. The IH cooking heater heats cooking utensils such as pans and frying pans mounted on the top by electromagnetic induction, so that the cooking utensils can be stirred or turned over like a normal gas stove. Must be made of metal.

  An object of the present invention is to provide a microwave cooking utensil capable of touching food during cooking.

Microwave cooking device of the present invention, the radiating aperture of the microwave, thereby preventing leakage of the microwave to close the radiating aperture, arranged a heating element that reacts to the microwaves, the heating element In the cooking utensil using microwaves for cooking the food on the externally exposed surface side opposite to the microwave incident surface in the heating element, the heating element comprises a high-temperature treated pulverized coal and a binder or an adhesive. A charcoal plate that is a mixed fired product, the charcoal plate mounted on the top as a top plate, a lower housing that forms a shielded microwave radiation space, and a microwave that radiates microwaves to the microwave radiation space A wave source and a vertical wall that stands up from the outer periphery of the top plate and surrounds the top plate, and the food is mounted on a net or skewered between the vertical walls. Passed over The microwave radiated from the microwave source is propagated from the microwave radiation space to the back side of the top plate so that the top plate generates heat, and the food on the upper surface side of the top plate is not contacted. It is a charcoal-grilling apparatus for cooking by heating .

  According to the above configuration, unlike IH for metal materials, it is a cooking utensil that uses microwave heating, and is not directly heated like a normal microwave oven, but is irradiated with microwaves. A heating element that generates heat is used. And the said heat generating body is provided so that this radiation opening may be obstruct | occluded in the microwave radiation opening which cut and formed a part of box body of the normal microwave oven, for example. Microwaves from a microwave source such as a magnetron are absorbed by the heating element, and leakage to the outside is prevented.

  Therefore, in a normal microwave oven, food cannot be touched during cooking. In the present invention, the heating element is exposed to the outside even if the same microwave heating is used. For example, in the case where the heating element is a plate on which the food is mounted, a normal cooking operation in which the food is stirred or turned over can be performed.

Furthermore, the high-temperature-treated pulverized coal generates heat (red) at a higher temperature than that of ferrite and the like, and can obtain an effect like charcoal burning. Moreover, even if cooking such as the charcoal grill is realized, smoke is not emitted from the heat source as in the case of using actual charcoal, which is very convenient. In addition, the cost of the heat source can be reduced.
Furthermore, the top plate is mounted on the upper part of the lower housing, and the space below the top plate surrounded by the lower housing forms a microwave radiation space where the microwaves are shielded. Microwaves are radiated from the microwave source into the microwave radiation space, and the emitted microwaves are propagated from the lower radiation space to the back side of the top plate, so that the heat generating material generates heat. Therefore, the normal cooking operation | work which stirs or reverses a foodstuff on a top plate can be performed.
In addition, it has a vertical wall that surrounds the top plate, and the food is mounted on a net or skewered and spanned between the vertical walls. Heat cooking can be performed without contact.

Furthermore, in the microwave cooker of the present invention, the heating element is characterized with ceramic material, in that it consists of plates which is mixed-firing of 5% or more of high temperature processing coal by weight.

  According to said structure, the said high temperature-processed pulverized coal can generate | occur | produce (red) heat to high temperature compared with a ferrite etc., and can acquire the effect like a charcoal grill. Moreover, even if cooking such as the charcoal grill is realized, smoke is not emitted from the heat source as in the case of using actual charcoal, which is very convenient. In addition, the cost of the heat source can be reduced.

  In the microwave cooking appliance of the present invention, the plate-like heating element is coated with ceramic that generates far infrared rays at least on the externally exposed surface side so that the charcoal does not touch the air. And

  According to said structure, the far infrared rays similar to fuel charcoal can be obtained with the ceramic which generate | occur | produces a far infrared ray. In addition, at least on the externally exposed surface side, the pulverized coal, the carbonized binder, or the adhesive component does not touch the air, so it does not burn out and can be used repeatedly. It is unnecessary.

  As described above, the microwave cooking utensil of the present invention uses a heating element that generates heat when irradiated with microwaves, and the heating element is formed by, for example, opening a part of a box of a normal microwave oven. The microwave radiation opening is provided so as to close the radiation opening.

  Therefore, in a normal microwave oven, it is impossible to touch food during cooking. In the present invention, even if the same microwave heating is used, the heating element is exposed to the outside. In the case of a plate on which ingredients are mounted, a normal cooking operation in which the ingredients are mixed or turned over can be performed.

It is a longitudinal cross-sectional view which shows the structure of the microwave cooking appliance which concerns on one Embodiment of this invention. It is a perspective view which shows the use condition of the microwave cooking device which concerns on other forms of implementation of this invention.

(Embodiment 1)
FIG. 1 is a longitudinal sectional view showing the structure of a microwave cooking utensil 1 according to an embodiment of the present invention. The microwave cooking utensil 1 is a cooking utensil using microwave heating, unlike IH for a metal material. It should be noted that the heating element 2 that generates heat when irradiated with microwaves is used instead of directly heating moisture as in a normal microwave oven. Further, it should be noted that the heating element 2 is provided so as to close the radiation opening 3 in a microwave radiation opening 3 formed by opening a part of a box of a normal microwave oven, for example. It is that. Therefore, the microwave from the microwave source 4 such as a magnetron is absorbed by the heating element 2, and leakage to the outside of the microwave cooking utensil 1 is prevented.

  In detail, in the microwave cooking appliance 1 of this embodiment, the heat generating body 2 is comprised as a top plate installed in a top | upper surface. And the lower housing | casing 5 mounts a top plate (heating element 2) in the upper part, and forms the shielded microwave radiation space 6. FIG. A microwave source 4 that radiates microwaves to the microwave radiation space 6 is disposed at the bottom of the lower housing 5. In this way, the microwaves radiated from the microwave source 4 are evenly dispersed in the microwave radiation space 6 and propagated to the back surface side of the top plate (heating element 2), so that the top plate (heating element 2). ) Generates heat, and the food on the upper surface side of the top plate (heating element 2) can be cooked.

  Therefore, in a normal microwave oven, it is impossible to touch food during cooking, whereas in the microwave cooking appliance 1 of the present embodiment, the heating element 2 is exposed to the outside even if the same microwave heating is used. Therefore, the food heated by the heating element 2 can be directly touched. Since the microwave cooking utensil 1 according to the present embodiment is configured as a plate on which the heating element 2 is loaded with ingredients, it is possible to perform a normal cooking operation in which ingredients are agitated or turned over.

  The lower housing 5 is formed in a box shape in which an opening (a microwave radiation opening 3) is formed in the upper portion for mounting the top plate (heating element 2), and is formed by sheet metal processing. Inside, a furnace wall 52 is formed which is formed by casting or applying castable (castable refractory), so-called refractory concrete. A stainless wire mesh 53 is embedded in the furnace wall 52 to prevent leakage of microwaves. The stainless steel wire mesh 53 also has a function as a reinforcing material when the furnace wall 52 is formed by molding or applying castable.

  A vent hole 54 that communicates with the outer casing 55 from the furnace wall 52 and opens the microwave radiation space 6 to the outside is formed at an appropriate location. The vent hole 54 is provided for preventing microwave leakage. The stainless steel wire mesh 53 is exposed. A leg base 7 is formed at an appropriate location on the bottom surface of the lower housing 5, and the microwave source 4 protruding from the bottom surface is protected by the leg base 7, and the microwave cooking is performed on the base 8. The instrument 1 is installed. The base 8 corresponds to a base having an appropriate height such as a sink or a range base in a kitchen in a home or a restaurant.

  In the microwave source 4, a ceramic plate 41 capable of transmitting microwaves in a use frequency band is fitted in an upper portion opened to the microwave radiation space 6 side, and the microwave source 4 is prevented from being contaminated and corroded. Yes. In a normal microwave oven using moisture resonance, a microwave frequency of around 2.45 GHz is used, but in this embodiment, it conforms to the material of the heating element 2 as described below (efficiently Microwaves of other frequency bands that can be heated and are legally available may be used.

  The heating element 2 is made of, for example, a charcoal plate obtained by mixing a caking material or an adhesive into high-temperature treated pulverized coal and firing it after molding. The binder or adhesive is, for example, phenol resin, corn starch or lignin. Alternatively, the heating element 2 is composed of a plate made by mixing 5% or more of high-temperature-treated pulverized coal in a ceramic material and firing after molding. The pulverized coal is mixed in at least a concentration capable of absorbing at least all of the microwaves emitted from the microwave source 4 so that the heating element 2 generates sufficient heat and the microwaves do not leak from the radiation opening 3.

  For example, in the case of pulverized coal obtained by pulverizing high-temperature coal ogah, the pulverized coal is cut into a thickness of about 3 mm in a state of the ogah coal, and is sandwiched between clips with a milliohm meter. Is about 20 mΩ, and the electric resistance value in the state of pulverized coal pulverized to a particle size of about 60 mesh is 1Ω or less.

  By comprising in this way, the high temperature-processed pulverized coal emits (red) heat to a higher temperature compared to ferrite and the like, so that an effect like charcoal burning can be obtained. In addition, even when cooking such as charcoal grilling is realized, smoke does not come out from the heat source as in the case of using actual charcoal, which is very convenient and can reduce the cost of the heat source. become able to.

  In the case of the plate-like heating element 2, the pulverized coal and the fired binder or adhesive may be burnt if they are heated (red) as they are. Therefore, in the microwave cooking utensil 1 of the present embodiment, the microwave in the use frequency band is transmitted to the side of the heating element 2 made of the plate (the microwave radiation space 6), like the ceramic plate 41. A ceramic plate 21 is provided which hermetically seals the heating element 2. A ceramic plate 22 that hermetically seals the heating element 2 and generates far infrared rays is provided on the externally exposed (upper side in the example of FIG. 1) surface of the heating element 2. The outer peripheral edge portions of the ceramic plate 21, the heating element 2, and the ceramic plate 22 that are stacked on each other are hermetically sealed by the castable to suppress burning. Further, in order to reliably prevent the leakage of the microwave, as shown in FIG. 1, a metal mesh 23 electrically connected to the stainless steel metal mesh 53 is embedded in the outer peripheral edge of the plate-like heating element 2. May be.

  By comprising in this way, since the heat generating body 2 does not touch air directly, it does not burn out and can be used repeatedly, and the process of ash is also unnecessary. Moreover, the far infrared rays similar to fuel charcoal can be obtained by using the ceramic plate 22 which generates far infrared rays.

In addition, the ceramic plate 22 that covers the externally exposed surface side of the plate-like heating element 2 has a predetermined hardness, so that it can be prevented from being damaged by a knife or the like, and the microwave cooking utensil 1 can be attached to the teppanyaki apparatus. Can be used like an iron plate. In that case, the ceramic plate 22 is not limited to being flat, and may be formed into irregularities in a streak shape or a mesh shape so that oil or the like flows down from the food, or is formed into irregularities so that the insulating ceramic is embedded in the concave portions. It is also possible.
(Embodiment 2)
FIG. 2 is a perspective view showing a usage state of the microwave cooking apparatus 10 according to another embodiment of the present invention. This microwave cooking apparatus 10 shows an example in which the microwave cooking utensil 1 is applied to a charcoal baking apparatus as disclosed in JP-A-8-266423. This microwave cooking apparatus 10 can be provided, for example, to a charcoal restaurant in the restaurant industry.

  The microwave cooking apparatus 10 includes the microwave cooking utensil 1 at the center of a table 11, and it should be noted that the outer peripheral portion of a ceramic plate 22 (heating element 2) serving as a top plate of the microwave cooking utensil 1. Therefore, the vertical wall 12 surrounding the ceramic plate 22 (heating element 2) is provided upright. And the foodstuffs 13-16 are mounted in the net | network 17, or are stabbed by the skewers 18 and 19, are spanned between the vertical walls 12, and are heat-cooked without contact to the ceramic board 22 (heating element 2). .

  In the example of FIG. 2, the food 13 baked on the net 17 is meat, and the food 14 is vegetable. In addition, the ingredients 15 stabbed in the skewer 18 are boiled and grilled, and the ingredients 15 stabbed in the skewer 19 are skewered with chicken and leeks. In such charcoal dishes such as yakiniku, yakitori, and salmon roast, a furnace for burning charcoal is used as in JP-A-8-266423, but the fuel is charcoal, which disappears by burning, become. On the other hand, in the heating element 2 of the present invention, although the source of heat generation is charcoal itself, it is not burned out (not consumed) and has a far-infrared effect similar to that of fuel charcoal. An economical charcoal baking apparatus can be realized.

  As described above, there is no smoke generated from the heating element 2, but it goes without saying that the microwave cooking apparatus 10 may have a configuration for removing smoke generated from the ingredients 13-16. Yes.

  Further, although not described in detail in the above-described embodiment, an appropriate sensor or control device may be provided to prevent microwave leakage when the heating element 2 or the lower housing 5 is damaged. Needless to say, good things. Further, not only the quantity and quality of the food to be loaded, but also an appropriate sensor or control device for maintaining the temperature of the heating element 2 or realizing a desired heating pattern may be provided.

  Furthermore, the space defined by the lower housing 5 is not provided as the microwave radiation space 6 so that the outlet of the waveguide that propagates the microwave directly faces the back side of the plate-like heating element 2. May be. In addition, the heating element 2 is not only mounted on the lower housing 5 but may be used standing or radiating heat from above the food.

DESCRIPTION OF SYMBOLS 1 Microwave cooking appliance 2 Heat generating body 21 and 22 Ceramic plate 3 Radiation opening 4 Microwave source 41 Ceramic plate 5 Lower housing | casing 52 Furnace wall 53 Wire net 55 External housing | casing 6 Microwave radiation space 7 Leg stand 8 Base 10 Microwave cooking Device 11 Table 12 Vertical walls 13 to 16 Food 17 Net 18, 19 Skewer

Claims (3)

The radiating aperture of the microwave, thereby preventing leakage of the microwave to close the radiating aperture, arranged a heating element that reacts to the microwaves, opposite to the incident surface of the microwaves in the heating element A cooking utensil using microwaves for cooking food on the side of the external exposed surface side ,
The heating element consists of a charcoal plate which is a mixed fired product of high-temperature treated pulverized coal and a binder or an adhesive,
The charcoal plate is mounted on the top as a top plate, and a lower housing that forms a shielded microwave radiation space;
A microwave source for radiating microwaves into the microwave radiation space;
A vertical wall standing from the outer periphery of the top plate and surrounding the top plate,
The foodstuff is mounted on a net or skewered, and spanned between the vertical walls,
The microwave radiated from the microwave source is propagated from the microwave radiation space to the back side of the top plate so that the top plate generates heat, and the food on the upper surface side of the top plate is not contacted. A microwave cooking utensil characterized by being a charcoal-grilling apparatus for cooking by heating . The heating element, ceramic materials and microwave cookware according to claim 1, characterized by comprising a plate which is mixed-firing of 5% or more of high temperature processing coal by weight. The microwave cooking according to claim 1 or 2, wherein the plate-like heating element is coated with ceramic that generates far-infrared rays at least on the externally exposed surface side so that charcoal does not touch air. Instruments.

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