JPH11128068A - High frequency heating device container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably uniform the finish temp. of respective parts by promoting heating in a part where temp. is not easily increased at the time of heating food being a heated object concerning a high frequency heating device container. SOLUTION: A heated object placing stand where food 9 being the heated object is placed is formed as a container 13 corresponding to the shape of food 9 and an electric wave concentrating body 10 which is formed by a dielectric body material so as to be separation possible or formed integratedly with the container is disposed at the rear surface of food 9 on the bottom part rear surface of the container 13. By the configuration, a part where temp. is not easily increased in food 9 is surely positioned in the just upper part of the electric wave concentrating body 1 so that uniform finish temp. is stably obtained. Besides, usage is also executed in any kind of high frequency heater in general purpose and also treatment at the time of washing, etc., is also facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-frequency heating apparatus such as a microwave oven, which is used for heating and cooking an object to be heated by mounting the object on an upper portion thereof. .

[0002]

2. Description of the Related Art Conventionally, in the case of an object to be heated having a large water content or a large shape, it is difficult to heat the central part of the food and its periphery compared to the outer peripheral part due to the half-depth of the microwave. Therefore, even if it is desired to end the heating at the time when the outer peripheral portion of the object to be heated is at an appropriate temperature, an insufficiently heated portion remains in the central portion and its peripheral portion. As a result, the outer peripheral portion was overheated, resulting in problems such as dehydration and hardening. In particular, in the case of reheating frozen foods, the outer peripheral portion that is easily heated melts first, and the melting causes the dielectric loss to further increase, making it easier to generate heat.In addition, uneven heating inside and outside is increased, and in extreme cases, the outer peripheral portion is carbonized. However, the use of high-frequency heating has been limited due to this uneven heating.

As a means for solving this problem, the following high-frequency heating device has been proposed. An outline of the configuration will be described with reference to FIGS.

FIG. 5 is a cross-sectional view of a conventional high-frequency heating apparatus, and FIG. 6 is a perspective view of a conventional heating object mounting table for the high-frequency heating apparatus.

[0005] As shown in FIG. 5, a radio wave from the magnetron 1 passes through the waveguide 2 and is radiated from the opening 3 into the heating chamber 4. A radio wave stirring blade 5 is provided in the upper part of the heating chamber 4 to make the radio wave irradiation amount uniform. Reference numeral 6 denotes a motor for driving the radio wave stirring blade 5. A shelf 7 is provided on the side of the heating chamber 4,
Is provided with a radio wave concentrator 10 formed of a low dielectric constant material such as resin, borosilicate glass, crystallized glass, and ceramic.
To be heated 8 is detachably locked. On the object-to-be-heated mounting table 8, a food 9 as an object to be heated is placed. The food 9 is high-frequency heated by radio waves from the magnetron 1. 1 and 5 schematically show the state of radio waves applied to the food 9.
FIG. 6 is an external perspective view of the heated object mounting table 8.

The radio wave concentrator 10 is a dielectric, and since the dielectric has a property of attracting radio waves, the electric field intensity near the dielectric is higher than other parts. By locating the central part of the food 9 that is difficult to heat directly above the radio wave concentrator 10,
The central portion of the food 9 that has been difficult to heat in the past is more effectively heated, and as a result, the entire food can be uniformly heated.

[0007]

However, in such a conventional configuration, in principle, a portion that is difficult to raise the temperature must be located directly above the radio wave concentrator in principle. However, because the mounting surface of the mounting table is wide, the object to be heated can be placed anywhere. Therefore, it is necessary for the user to perform the heating operation with care so that the position of the object to be heated and the radio wave concentrator do not shift. In addition, since the size and the degree of temperature rise differ for each food item, the optimal shape and mounting position of the radio wave concentrator change, but manufacturing the optimal mounting table for each food may be large. It is costly and not easy.

Further, in a configuration in which a shelf is provided in a refrigerator and a mounting table is locked there, a shelf must be provided in the refrigerator, and the outer dimensions of the mounting table are restricted by the dimensions in the refrigerator. The high-frequency heating device is not used, so there is no versatility and the cost is high.

Also, if food such as a hamburger is dripping with gravy, the part immersed in the gravy will be boiled first, and the mounting table must be removed and washed. It is difficult to handle because it does not enter. In addition, since the mounting table and the radio wave concentrator are composed of different objects, they are fitted from the upper surface and fixed with a resin sheet or rubber sheet, productivity is low, and dirt due to meat juice such as hamburgers enters the gap and can not be cleaned completely. There are concerns about reliability issues such as hygiene, food residue and sparks.

[0010] In addition, high-frequency heating can raise the temperature of food, but since it does not give a browning or a crisp feeling such as frying, it is preferable to put it in an oven or grill and finish with a browning. Because the mounting table is large, it can not be put in the oven or grill as it is,
It is not convenient because the food needs to be transferred.

As described above, the conventional high-frequency heating apparatus has problems in terms of usability, reliability, stable performance, and cost.

[0012]

According to the present invention, in order to solve the above-mentioned problems, a mounting table for mounting a food to be heated is formed in a container shape according to the shape of the food, and the bottom rear surface of the container is formed. Is provided with a radio wave concentrator integrally or separable from the container made of a dielectric material. According to the above invention, the portion of the food that is difficult to raise the temperature can be selectively located directly above the radio wave concentrator, and has the effect of stably improving the heating of the portion that is difficult to warm, and what kind of high frequency It can be used for a general purpose as a heater, and handling at the time of washing etc. becomes easy.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, a container for mounting an object to be heated is formed of a heat-resistant resin material having low dielectric loss, such as polyphenylene sulfide, or ceramics or heat-resistant glass. A radio wave concentrator formed of a dielectric material having a thickness of 3 mm is provided integrally or separably with the container.

[0014] The portion of the food that is difficult to raise the temperature can be reliably positioned almost directly above the radio wave concentrator, which has the effect of stably improving the heating of the portion that is difficult to warm and has a general-purpose shape. It can be applied to any type of high frequency heating device.

Further, since it is small in size and easy to handle at the time of washing, etc., by using a heat-resistant material, it can be used for oven heating without the trouble of transfer after high frequency heating, so that it is easy to use.

By integrally forming the radio wave concentrator, productivity is increased, and there is no fear that dirt such as meat juice enters the gaps and causes problems in hygiene and reliability.

Further, the container and the radio wave concentrator can be separated,
It is formed by attaching a radio wave concentrator to the back of the container with an elastic adhesive.

[0018] Since the radio wave concentrator having an optimal shape different for each food can be stuck to an arbitrary place by the elastic adhesive, it is possible to easily respond to the demand of the user and to reduce the thermal expansion amount when used in an oven. There is no separation between the two due to the difference.

Also, 3 mm is partially applied to the bottom rear surface of the container.
A radio wave concentrator having the above-mentioned thick portion is integrally formed.

Further, a plurality of convex protrusions are formed on the surface of the container on which the object is to be heated, in a linear or dotted manner.

The protrusions do not cause the food to be immersed in the moisture or oil generated during heating, such as a hamburger, and there is no problem of partial boiling.

The height of the peripheral flange of the surface of the container on which the object to be heated is placed is set within a range of about 10 mm or less above the surface on which the object is to be heated.

Since the height of the flange is low, even in the case of a hot-air circulation type oven, the hot air directly hits the object to be heated without being interrupted, and can be efficiently heated.

Further, a plurality of radio wave concentrators are provided at different positions in one container.

Further, a plurality of foods can be uniformly heated at the same time. Also, a plurality of radio wave concentrators are provided in one container, and at least one of the radio wave concentrators has a thickness different from the other.

By forming each of the radio wave concentrators into a shape and a thickness suitable for each food, a plurality of types of food can be uniformly heated in one container at a time.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A container for a high-frequency heating device in an embodiment of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIGS. 1 and 2 are a sectional view and a top view, respectively, of a container for a high-frequency heating device according to Embodiment 1 of the present invention. The container 13 on which the food 9 is placed is formed in accordance with the shape of the food 9 by using a heat-resistant resin material with low dielectric loss, ceramics, or heat-resistant glass. A radio wave concentrator 10 made of a dielectric material having a thickness of 3 mm or more, which is a separate object, is attached to the bottom rear surface of the container 13 with an elastic adhesive 16 such as silicone putty. The dashed arrow 12 schematically shows the distribution of radio waves applied to the food 9.

The dielectric has the property of attracting radio waves, and the electric field intensity in the vicinity thereof is higher than that of other parts. Therefore, the dielectric has the effect of promoting the heating of that part.
If 3 is used, a portion where the temperature is unlikely to rise can be reliably located directly above the radio wave concentrator 10, and a uniform finish temperature can be stably obtained.

Further, since the container 13 has a general-purpose shape, it can be used for any type of high-frequency heater, and is easy to handle, for example, an automatic dishwasher can be used for washing after use.

Further, by using a heat-resistant material, there is no need for transfer after high-frequency heating, and the oven can be heated as it is.

Further, since the radio wave concentrator 10 having an optimum shape for each food can be stuck to an arbitrary place by the elastic adhesive 16 (for example, silicone putty), it is possible to easily cope with a user's request. There is no separation between the two due to the difference in the amount of thermal expansion when used in an oven.

The height of the food mounting surface of the container 13 is 3 m.
A plurality of m-shaped convex protrusions 14 are formed in a bank shape. Good food 9 such as a hamburger is placed on the convex protrusions 14, and the meat juice or oil dripped out during heating in the valleys is collected, so that good cooking results can be obtained.

Further, since the height of the peripheral flange 15 of the container 13 is set at a height of 10 mm or less above the food mounting surface, even in the case of a hot air circulation type oven, the hot air is directly blocked by the heated object without being interrupted. As a result, heating can be performed efficiently.

(Embodiment 2) FIGS. 3 and 4 are a cross-sectional view and a top perspective view of a high-frequency heating apparatus container according to Embodiment 2 of the present invention. On the back surface of the bottom of the container 13, as the radio wave concentrator 10, a plurality of thick portions having a thickness of 3 mm or more are further formed with the same material as the container 13. The thickness of each radio wave concentrator 10 is set in accordance with the temperature rise characteristics of the food 9 to be heated, and has different thicknesses and shapes.

Conventionally, what is called a lunch box or set meal in which various foods are contained in one container requires a high-frequency energy amount depending on the moisture amount and shape of the food.
It has been difficult to uniformly heat the whole by high-frequency heating.

However, if the container 13 of this embodiment is used,
Since the thickness and shape can be set according to the temperature rise characteristics of each food, uniform heating becomes possible.

Further, since the container 13 and the radio wave concentrator 10 can be integrally formed, the productivity of the container 13 can be increased and the container 13 can be provided at a low cost, and there are no gaps in which dirt enters and there are few problems in hygiene and reliability.

[0039]

As is apparent from the above description, the high-frequency heating container of the present invention has the following effects.

The mounting table on which the food to be heated is placed is formed into a small container as a container according to the shape of the food. On the bottom surface of the bottom of the container, another object formed of a dielectric material or an integrally formed container is formed. By providing the radio wave concentrator, a portion of the food that is difficult to raise the temperature can be reliably positioned directly above the radio wave concentrator, and the heating of a portion that is difficult to warm can be stably improved.

Further, it can be generally used for any high-frequency heater, and the handling during washing or the like becomes easy.

At this time, by forming the container and the radio wave concentrator as separate objects and sticking them to the back surface of the container, it is possible to easily cope with the radio wave concentrator having different optimal shapes and mounting positions for individual foods. By using an elastic adhesive such as silicone putty for fixing the radio wave concentrator to the container, the two can be prevented from being separated due to a difference in the amount of thermal expansion when used in an oven.

Alternatively, by providing a thick portion in a part of the container to integrally form the radio wave concentrator, productivity is increased, and dirt such as meat juice may enter the gaps and cause problems in hygiene and reliability. There is no.

Further, by providing a plurality of radio wave concentrators in one container, a plurality of foods can be heated uniformly at the same time, and each radio wave concentrator is formed into a shape and thickness suitable for each food. By doing so, it is possible to uniformly heat a plurality of types of foods in one container at a time.

Further, the height of the container to be heated is 3 mm.
By forming a plurality of convex protrusions in a bank-like (linear) or dot-like shape, it is possible to solve a problem such as hamburger or the like that food is immersed in water or oil that drips during heating and boiled.

The material used is a heat-resistant resin material having a low dielectric loss such as polyphenylene sulfide or a heat-resistant material such as ceramics or heat-resistant glass which can withstand use in an oven. It is easy to put in the oven without any hassle. By providing the height of the peripheral flange of the container within a range of 10 mm or less above the surface on which the object is to be heated, the hot air directly hits the object to be heated even in the case of a hot air circulation type oven, so that heating can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a high-frequency heating device container according to an embodiment of the present invention.

FIG. 2 is a top view of the container for the high-frequency heating device.

FIG. 3 is a sectional view of a high-frequency heating device container according to another embodiment.

FIG. 4 is a top perspective view of the high-frequency heating device container.

FIG. 5 is a cross-sectional view of a conventional high-frequency heating device.

FIG. 6 is a top perspective view of the heated object mounting table for the high-frequency heating device.

[Explanation of symbols]

 9 Food 10 Radio wave concentrator 13 Container 14 Projection 15 Flange 16 Elastic adhesive

Claims (7)

[Claims] 1. A container on which an object to be heated is placed is made of a heat-resistant resin material having a low dielectric loss such as polyphenylene sulfide, or ceramics or heat-resistant glass. A container for a high-frequency heating device, comprising a radio wave concentrator formed of a body material and integrally or separably from the container. 2. The container for a high-frequency heating device according to claim 1, wherein the radio wave concentrator is attached to a back surface of the container with an elastic adhesive. 3. A container on which an object to be heated is placed is made of a heat-resistant resin material having a low dielectric loss such as polyphenylene sulfide, or ceramics or heat-resistant glass. The container for a high-frequency heating device according to claim 1, wherein a radio wave concentrator having a portion is formed integrally with the container. 4. The container according to claim 1, wherein a plurality of convex protrusions are formed on the surface of the container on which the object is to be heated, in a bank-like (linear) or dot-like manner.
Or the container for a high-frequency heating device according to 3. 5. The container for a high-frequency heating apparatus according to claim 1, wherein the height of the flange around the mounting surface of the container is set to a range of about 10 mm or less above the mounting surface of the object to be heated. 6. The container for a high-frequency heating device according to claim 1, wherein a plurality of radio wave concentrators are provided in one container at different positions. 7. The container for a high-frequency heating apparatus according to claim 6, wherein a plurality of radio wave concentrators are provided in one container at different positions, and at least one of the radio wave concentrators has a thickness different from other radio wave concentrators.