JP2012034946A - Cooking container for microwave oven - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooking container for a microwave oven which restrains uneven heating and drying liable to occur in heating in a microwave oven to enable cooking in a tasty condition to heat/defrost a frozen food using the microwave oven.SOLUTION: The cooling container includes: a lower container 10 for storing water 19 to generate steam; a plate for heating 20 storing food 24 and arranged so as to be superposed on the lower container 10; a lid 30 for covering the upper surface of the plate for heating 20; and an outer lid 40 made of an electromagnetic shield material for covering at least the upper surface of the lid 30, and preventing the food 24 stored in the plate for heating 20 from being irradiated with a microwave.

Description

The present invention relates to a cooking container for a microwave oven that can steam cook water stored in a lower container using a microwave oven, and thaw and heat food such as frozen dishes and ingredients.

With the spread of microwave ovens and the improvement of food freezing technology, frozen foods cooked in a microwave oven have become widespread.

The microwave oven performs thawing and heating by heating the moisture contained in the food. However, since the water inside the food is not necessarily contained uniformly, so-called “heating unevenness” may occur, or the water inside the heated food may disappear due to evaporation and “passy” may occur. there were.

In order to solve such a problem, the invention described in Patent Document 1 has been proposed. The present invention includes a container for storing water for generating water vapor, a partition wall for partitioning a plurality of dishes to be served, and a pinhole for allowing water vapor to pass through, and the food in a frozen state with water vapor received through the pin hole It is a cooking device for microwave ovens which has a heating dish for heating and thawing cooking, and a lid which consists of an electromagnetic shielding material which covers at least the upper surface of a heating dish.

JP2010-82358

In the invention described in Patent Document 1, since the lid covering the upper surface of the heating dish is made of an electromagnetic shielding material, there are the following problems.
First, if the lid part is made of an electromagnetic shielding material, it would be too expensive to produce the lid due to material costs, mold costs, etc., so the cooking container could not be used as a consumable, and used as a takeout container I couldn't.

Secondly, it is expensive to change the mold even in ordinary synthetic resin cooking containers, but if the lid part is made of electromagnetic shielding material, when changing the shape of the product, cooking Apart from the synthetic resin part of the container, a lid mold for the electromagnetic shielding material has to be prepared, which further increases costs and makes it difficult to change the shape of the cooking container.

  The present invention solves the above-mentioned problems of the conventional example, and the lid of the cooking container is made of the same synthetic resin as the parts of the other containers to reduce the cost. An object of the present invention is to prevent the microwave irradiation to the food stored in the heating dish by stacking the outer lid, to increase the cooking efficiency and to cook deliciously.

The present invention includes a lower container that stores water for generating water vapor by heating in a microwave oven, a heating dish that is used on top of the lower container to store food, and a lid that covers an upper surface of the heating dish. A microwave oven cooking container comprising an outer lid made of an electromagnetic shielding material that covers at least the upper surface of the lid, wherein the outer lid prevents microwave irradiation to food stored in the heating dish.

Further, the present invention provides a space between the lid by curving the top plate portion of the outer lid, and the side of the food stored in the heating dish on the periphery of the top plate portion. It is the cooking container for microwave ovens provided with the shielding part for preventing microwave irradiation.

Further, the present invention provides a microwave oven for preventing microwave irradiation from above the food stored in the heating dish, wherein the top plate portion of the outer lid is a flat plate and is arranged in close contact with the upper surface of the lid. It is a cooking container.

The present invention is also a cooking container for a microwave oven provided with a shielding part for preventing microwave irradiation from the side to the food stored in the heating dish at the periphery of the top plate part of the outer lid. is there.

In addition, the present invention covers a lower container that stores water for generating water vapor by heating in a microwave oven, a heating dish that is used by being stacked on the lower container, and stores food, and covers an upper surface of the heating dish. A cooking container for a microwave oven comprising a lid, wherein an upper opening of the heating dish is covered with a shielding sheet made of an electromagnetic shielding material to prevent microwave irradiation to the food.

In the invention of claim 1, since the outer lid is made of an electromagnetic shielding material, it is possible to prevent microwave irradiation to the food contained in the heating dish and to cook deliciously.
The outer lid is manufactured separately from the synthetic resin container body consisting of the lower container, the heating dish and the lid, and is used on top of the lid. Cost can be reduced, and the shape and the length of the shielding portion can be changed regardless of the container body. The container body itself can be used as a take-out container.

In the invention of claim 2, the top plate portion of the outer lid is curved upward to form a space between the lid and the space filled with heated water vapor. The water vapor applies pressure to push the outer lid, but the outer lid is not deformed because of its material. Therefore, the pressure in the space is not reduced, and the food is pressurized while maintaining a high pressure. As a result, the thawing speed of the food is increased and uneven thawing can be prevented.
Furthermore, since the shielding part was also provided at the periphery of the top plate part, it was possible to prevent microwave irradiation from the upper side and the side to the food stored in the heating dish, and natural heating and thawing with water vapor was possible, The food can be cooked deliciously.

In the invention of claim 3, since the top plate portion of the outer lid is a flat plate and is disposed in close contact with the upper surface of the lid, the outer lid pressurizes air and water vapor filled in the space between the lid and food. Is preserved. Furthermore, the microwave irradiated to the food stored in the heating dish from above can be prevented, natural heating and thawing with water vapor can be performed, and the food can be cooked deliciously.

In the invention of claim 4, the top plate portion of the outer lid is a flat plate arranged in close contact with the upper surface of the lid, and has a shielding portion on the periphery of the top plate portion. Naturally heated and thawed with water vapor, which keeps pressurized air and water vapor in the space, and prevents microwaves from being applied to food stored in the heating dish from above and from the side. Can be cooked deliciously.

In the invention of claim 5, since the upper opening of the heating dish is covered with a shielding sheet made of an electromagnetic shielding material, it is possible to prevent microwave irradiation to the food stored in the heating dish, and natural water vapor is used. Can be heated and thawed and cooked deliciously. In addition, the structure is simple and easy to manufacture, and the cost is low.

The perspective view which shows each component of Embodiment 1 of this invention Front sectional view of Embodiment 1 of the present invention Partially enlarged sectional view of Embodiment 1 of the present invention The partially expanded sectional view of other examples of Embodiment 1 of the present invention. Front sectional view of Embodiment 2 of the present invention Front sectional view of Embodiment 3 of the present invention Partially enlarged sectional view of Embodiment 4 of the present invention Partially enlarged sectional view of another example of Embodiment 4 of the present invention

An embodiment for carrying out the present invention will be described with reference to the drawings. In the present invention, the food includes both food and cooked food, and includes foods in a frozen state, a chilled state, a room temperature state, or a raw state.

The cooking container for microwave ovens of Embodiment 1 is shown in FIG. 1 thru | or FIG.
Explaining the configuration, the lower container 10 for storing water for generating water vapor is formed at the lowermost end, and the heating dish 20 is disposed thereon.
This heating dish 20 is provided with a storage portion 21 for food 24 inside, and has a flange portion 22 at the periphery, and vent holes 23, 23... For allowing water vapor to pass through the flange portion 22.
A lid 30 is formed on the heating dish 20, and the upper surface of the lid 30 is an outer lid 40 for covering the lid 30.

The lower container 10, the heating dish 20, and the lid 30 are made of synthetic resin having microwave permeability and constitute a container body.
The outer lid 40 is made of an electromagnetic shielding material. The electromagnetic shielding material refers to a material that can reflect microwaves irradiated by operation of a microwave oven. For example, metals such as aluminum, iron, and copper, and materials obtained by coating these metals on the surface.
As an example of the size of the present embodiment, the height when the entire cooking container is assembled as shown in FIG. 2 is about 10 cm, and the diameter of the outer lid 40 is about 25 cm. The size and the like can be arbitrarily determined without being limited to the present embodiment and the following embodiments.

The lower container 10 is octagonal, and has a bowl shape with a narrow bottom and opened upward. Water 19 can be stored at the bottom, and when the microwave oven is operated, the water 19 is heated by microwave irradiation and becomes water vapor. A part of this water vapor is further heated by microwave irradiation to become superheated water vapor.

The heating dish 20 has a circular shape, and the frozen food 24 is stored in the food storage unit 21 formed inside, and is stacked on the lower container 10. And the foodstuff 24 in the food storage part 21 is heat-thaw-cooked with the water vapor | steam which generate | occur | produces from the said lower container 10. FIG.
An octagonal flange portion 22 is formed on the periphery of the heating dish 20, and eight water vapor vent holes 23 are formed in the flange portion 22, and the water vapor vent holes 23 allow the water vapor to pass through the water vapor. Flows to the lid 30 side.

The lid 30 has an octagonal shape and covers the lower container 10 in which the heating dish 20 is stored, so that the space 29 formed by the heating dish 20 and the lid 30 is substantially sealed. An octagonal edge 32 is provided on the periphery.
Further, air holes 33, 33,... Are provided on the surface of the lid 30 for appropriately releasing the water vapor to the outside of the space 29.

The outer lid 40 is circular, and a space 39 is formed between the top plate portion 41 and the surface of the lid 30 by bending the top plate portion 41 upward. Then, a side plate 42 is provided by bending downward at the periphery of the top plate portion 41, and a stepped portion 43 is formed by projecting the lower end of the side plate 42 outward. The step 43 is placed on the edge 32 of the lid 30.

The front end of the stepped portion 43 is bent downward to form the shielding portion 44. This shielding part 44 is for preventing the microwave irradiated to the foodstuff 24 accommodated in the said heating dish 20 from the side.

Next, the operation of this embodiment will be described.
When cooking the food 24 by heating and thawing, the heating dish 20 containing the food 24 is stacked on the lower container 10, the lower container 10 is covered with the lid 30, and the lid 30 is further covered with the outer lid 40, Thaw with heating in the range.

Since the outer lid 40 is made of an electromagnetic shielding material, it can reflect microwaves irradiated from above indicated by phantom lines in FIG. 2, thereby preventing the food 24 from being irradiated with microwaves from above. it can.

Further, the outer lid 40 has the following operation.
When the water 19 is overheated, the hot air and water vapor fill the space 29 between the food 24 surface and the lid 30 and expand, so that the lid 30 is pushed upward.
At the same time, heat is transferred to the space 39 between the lid 30 and the outer lid 40 and expands. However, the outer lid 40 is made of an electromagnetic shield and is heavy, so it does not deform or move upward.
For this reason, when the inside of the spaces 39 and 29 is pressurized, pressure reduction due to deformation of the outer lid 40 is avoided, so that the pressure is applied to the food 24 while maintaining a high pressure, and heat transfer to the food 24 is performed. Speed up. As a result, the thawing speed is increased and at the same time cooking is performed while preventing uneven thawing.

Since the shielding portion 44 formed on the periphery of the outer lid 40 is for preventing microwaves from being laterally applied to the food 24, its height H is from the upper end of the food 24 to the bottom surface of the heating dish 20. It is the same as the height (see FIG. 3).
In addition, if the shielding part 44 is extended downward by a certain distance and the height is set to H + H2, microwaves irradiated from the side and the lower side of the food 24 can be prevented.
In the present embodiment, the height H2 is calculated to be 15 mm from the microwave irradiation angle from below, but can be appropriately changed depending on the shape of the container body, the position of the food, and the like.

On the other hand, since water easily absorbs microwaves, the water 19 stored at the bottom of the lower container 10 is converted into water vapor with high efficiency. This high-temperature water vapor directly heats the food 24 from below the heating dish 20 and convects in the space 29 above the food 24 to uniformly heat the food 24 from above.
As described above, the food 24 is heated by water vapor, so that heating and thawing cooking can be performed while suppressing uneven heating due to direct irradiation of microwaves and the generation of dryness.

As described above, according to the present embodiment, the microwave irradiated to the food 24 by the outer lid 40 made of an electromagnetic shielding material is reduced, and the food 24 is cooked by heating with high-pressure steam. A delicious and highly nutritious food can be obtained quickly without causing puffiness.
After cooking, the container body with the outer lid 40 removed can be carried hygienically without requiring a new lid, and can be used as a lunch box.
Further, since the outer lid can be reused with respect to the container body, the cost of the entire cooking container is reduced and the take-out of the container body can be handled.

As another example of the present embodiment, in contrast to the above, depending on the food 24, it may be better to irradiate an appropriate microwave. At that time, as shown in FIG. 4, the peripheral edge 45 of the outer lid 40 can be provided at a position above the upper end of the food 24 by a height H <b> 1 to create a space where microwaves are irradiated. The value of the height H1 is suitably 15 mm, but can be appropriately changed depending on the shape of the container body, the position of the food, and the like.
Thereby, the microwave is irradiated to the foodstuff 24 from below the peripheral edge 45, and it will be in a favorable cooking state.

A second embodiment of the present invention will be described with reference to FIG.
The outer lid 50 of this embodiment is shown in FIG. 5 and has a flat plate shape placed on the surface of the lid 30.

By using such an outer lid 50, direct microwave irradiation from the upper surface of the heating dish 20 can be blocked. Therefore, it is possible to suppress a situation in which the heating is biased to the peripheral portion of the frozen food that tends to occur during heating by the microwave oven.

Further, since the outer lid 50 is placed on the surface of the lid 30 and always presses the lid 30, the effect of maintaining the high-pressure state of the space 29 between the lid 30 and the food 24 as described above. Have
As a result, as in the first embodiment, the food 24 is pressurized and the heat transfer speed to the food 24 is increased. As a result, uneven thawing is prevented and the thawing speed is increased.

A third embodiment of the present invention will be described with reference to FIG.
The outer lid 60 of the present embodiment is as shown in FIG. 6, has a shape that covers part of the surface and side surface of the lid 30, and a shielding portion 61 that extends downward on the periphery of the outer lid 50 of the second embodiment. It is composed.

As shown in the drawing, a microwave shielding portion 61 extending downward is formed on the periphery of the outer lid 60, and is arranged so as to cover a part of the upper side of the lid 30 placed on the lower container 10.
By using such an outer lid 60, direct irradiation of microwaves from the upper and side surfaces of the heating dish 20 can be blocked. Therefore, it is possible to suppress a situation in which the heating is biased to the peripheral portion of the frozen food that tends to occur during heating by the microwave oven.

Further, since the outer lid 60 is placed on the surface of the lid 30 and constantly presses the lid 30, the effect of maintaining the high-pressure state of the space 29 between the lid 30 and the food 24 as described above. Have
As a result, as in the first embodiment, the food 24 is pressurized and the heat transfer speed to the food 24 is increased. As a result, uneven thawing is prevented and the thawing speed is increased.

A fourth embodiment of the present invention will be described with reference to FIGS.
In this embodiment, the upper opening of the heating dish 20 in the container body is covered with a shielding sheet made of an electromagnetic shielding material.
That is, as shown in FIG. 7, a shielding sheet 27 made of a thin aluminum plate is attached to the upper surface of the top seal 26 that covers the upper opening of the heating dish 20. The method for configuring the shielding sheet 27 is not limited to sticking, and for example, aluminum may be vapor-deposited on the surface of the top seal 26.
In this embodiment, the outer lid 40 is not used.

According to this embodiment, the microwave irradiation to the foodstuff 24 accommodated in the heating dish 20 can be prevented, natural heating and thawing with water vapor can be performed, and the food can be cooked deliciously. In addition, the structure is simple and easy to manufacture, and the cost is low.

In another example of the present embodiment shown in FIG. 8, the shielding sheet 27 is extended downward along the peripheral edge of the heating dish 20 to constitute a side shielding sheet 28. According to this example, there is an effect that microwave irradiation to the food 24 from the side can be prevented.

DESCRIPTION OF SYMBOLS 10 Lower container 19 Water 20 Heating tray 21 Food storage part 24 Food 27 Shielding sheet 28 Shielding sheet 29 Space 30 Lid 32 Edge 39 Space 40 Outer cover 41 Top plate part 42 Side plate 43 Step part 44 Shield part 50 Outer cover 60 Outside Lid H Height H1 Height H2 Height

Claims (5)

A lower container that stores water for generating water vapor by heating in a microwave oven, a heating dish that is used on top of the lower container to store food, a lid that covers an upper surface of the heating dish, A microwave oven cooking container comprising an outer lid made of an electromagnetic shielding material that covers at least an upper surface, and the outer lid prevents microwave irradiation to food stored in the heating dish. The top plate portion of the outer lid is curved to form a space between the lid and the periphery of the top plate portion is prevented from being irradiated with microwaves from the side to the food stored in the heating dish. The cooking container for microwave ovens according to claim 1, further comprising a shielding part for the purpose. The top plate portion of the outer lid is a flat plate and is disposed in close contact with the upper surface of the lid to prevent microwave irradiation from above the food stored in the heating dish. The cooking container for microwave ovens of description. 4. The electron according to claim 3, further comprising a shielding portion for preventing microwave irradiation from the side of the food stored in the heating dish at a peripheral edge of the top plate portion of the outer lid. Cooking container for the range. The heating apparatus includes: a lower container that stores water for generating water vapor by heating in a microwave; a heating dish that is used over the lower container to store food; and a lid that covers an upper surface of the heating dish. A cooking container for a microwave oven, wherein an upper opening portion of a dish is covered with a shielding sheet made of an electromagnetic shielding material to prevent the food from being irradiated with microwaves.

Images