JP2009201948A - Container for microwave cooking - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a container for microwave cooking which controls the inner pressure of the container in cooking by steam pressure higher than the atmospheric pressure, and is inexpensively manufactured with the use of only two components. <P>SOLUTION: The container 10 for microwave cooking only includes only two components of a container body 20 for storing food and an upper lid 30 fitted to the container body 20. The container body 20 includes a projection 40 for pressure adjustment, which is arranged at the center position and extended inward. The upper lid 30 includes a recession 50 for pressure adjustment, which is arranged at the center position and extended inward from the upper surface. A steam discharge hole 38 is arranged in the bottom of the recession 50 for pressure adjustment, and constitutes a pressure adjustment mechanism together with the projection 40 for pressure adjustment. Thus, the container 10 for the microwave cooking is provided, capable of controlling steam pressure force inside the container in cooking to be equal to or more than the atmospheric pressure. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a container for cooking various foods such as fresh foods, noodles, and side dishes with a microwave oven.

The container for microwave oven cooking is a simple cooking utensil that can be stored and transported in a sealed manner and can be cooked in a short time. And when cooking using such a container, it is important to automatically control the vapor pressure, not let the seasoning liquid in the container leak to the outside of the container, and make the inside of the microwave oven and the outer periphery of the container dirty. It is. Furthermore, in order to cook deliciously and efficiently, without reducing nutrients as much as possible, the container is tightly sealed during cooking, and the food can be quickly heated to a high temperature, and the pressure inside the container can be controlled with a vapor pressure higher than atmospheric pressure. For this purpose, it is essential to ensure the accuracy of each part of the container.
It is also important that each part of the container has good moldability, stable quality, and low cost production.
There exists a container of patent document 1 as an example of the container for the conventional microwave oven cooking.
Japanese Patent No. 396377

  The container of Patent Document 1 includes a container body, an upper lid, and a cap with a flange. The upper lid and the flange of the cap are in close contact to form a steam discharge opening / closing portion, and the cap flange is lifted from the upper lid with increased vapor pressure. It is structured to push up and discharge steam.

However, since the container of Patent Document 1 is composed of three members, that is, a container main body, an upper lid, and a cap, there is a problem that the number of parts increases and the manufacturing cost increases.
Then, an object of this invention is to provide the container for microwave oven cooking which solved the above problems.

First, the present invention is a microwave cooking container comprising a container body for storing ingredients and an upper lid fitted to the container body,
The container body has a pressure adjustment convex portion extending inward,
The upper lid has a pressure adjusting recess extending inward from the upper surface,
The bottom of the pressure adjusting recess has a steam discharge hole,
Secondly, by the microwave cooking container, wherein the pressure adjusting mechanism is constituted by the pressure adjusting convex portion and the steam discharge hole, and a container main body for storing food and an upper lid fitted to the container main body, A microwave oven cooking container comprising:
The container body has a pressure adjustment convex portion extending inward,
The upper lid has a pressure adjusting recess extending inward from the upper surface,
The bottom of the pressure adjustment recess has a steam discharge valve, and the pressure adjustment protrusion has a steam discharge groove.
The center of the upper lid may be a flat surface without a recess.

According to the present invention, the microwave cooking container is composed of two components, that is, a container main body and an upper lid, so that the manufacturing cost can be kept low.
In addition, by providing a pressure adjustment mechanism that adjusts the vapor pressure generated during cooking with a microwave oven, during cooking, a predetermined pressure is applied to the ingredients while preventing the container from exploding or leaking seasoning liquid. The steaming effect can be produced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Embodiment 1

First, a first embodiment, which is a basic structure of the present invention, will be described with reference to FIGS.
1 to 3 show a microwave cooking container 10a (hereinafter abbreviated as "container 10a") according to a first embodiment which is a basic structure of the present invention. 1 is an exploded perspective view of the container 10a, FIG. 2 (a) is a top view of the container 10a, FIG. 2 (b) is a longitudinal sectional view taken along line bb of FIG. 2 (a), and FIG. 2B is an enlarged cross-sectional view of part C, FIG. 3A is a longitudinal cross-sectional view of the container 10a during cooking, and FIG. 3B is an enlarged cross-sectional view of part B of FIG. 3A. .
As shown in FIG. 1, the container 10a includes a container main body 20a for storing food and an upper lid 30a fitted to the container main body 20a.

  The container body 20a includes a food storage portion 28a, a pressure adjusting convex portion 40a (hereinafter referred to as “convex portion 40a”), a fitting portion 42a with the upper lid 30a, and a handle 46a. The food storage part 28a has a cylindrical shape as a whole. The convex portion 40a includes a pressure adjusting convex side surface 24a (hereinafter referred to as “convex side surface 24a”) extending in a circular shape from the container main body bottom portion 26a toward the inside of the container, and a pressure adjusting convex portion. It is comprised from the upper surface 22a (henceforth "the convex part upper surface 22a"). The fitting portion 42a is positioned at the upper end of the food storage portion 28a, and the upper end portion is bent to form a retaining 44a that faces the inside of the container over the entire circumference of the container body 10a. The handle 46a extends further outward from the fitting portion 42a.

  The upper lid 30a includes, in order from the center, a steam discharge hole 38a, a pressure adjusting recess bottom 32a (hereinafter referred to as "recess bottom 32a"), a pressure adjusting recess 50a (hereinafter referred to as "recess 50a"), and an upper lid upper portion 36a. , Upper lid side surface 58a, fitting portion 52a with container body 20a, and handle 56a. The concave portion 50a includes a pressure adjusting concave side surface 34a (hereinafter referred to as a “concave side surface 34a”) and a concave bottom portion 32a extending in a circular cross section from the annular upper lid upper portion 36a toward the inside of the container. A steam discharge hole 38a is formed in the recess bottom 32a.

  The fitting portion 52a, which is a fitting portion of the upper lid 30a with the container body 20a, folds upward the peripheral edge of the upper lid side surface 58a that extends so that the outer peripheral portion of the annular upper lid upper portion 36a extends toward the lower side of the container. The retaining edge 54a is formed over the entire circumference of the upper lid 30a by further folding the folded periphery to the inside of the container. Similar to the container body 20a, the handle 56a on the upper lid extends from the fitting portion 52a toward the outside of the container and is in close contact with the handle 46a of the container body 20a.

And as shown in FIG.2 (c), the step part 42s of the fitting part 42a of the container main body 20a, the wall part 42t, and the retaining part 44a are the step part 52s of the fitting part 52a of the upper cover 30a, and the wall part. The container body 20a and the upper lid 30a are fitted together by closely fitting with 42t and the retaining member 54a.
The height of the convex portion 40a and the depth of the concave portion 50a are formed so that the convex portion upper surface 22a and the concave portion bottom portion 32a are in close contact when the container body 20a and the upper lid 30a are fitted in the fitting portions 42a and 52a. Yes. Moreover, the convex part upper surface 22a and the concave part bottom part 32a are each formed in the flat surface so that it may contact | adhere without gap.

  When the convex upper surface 22a is in close contact with the concave bottom portion 32a, the vapor discharge hole 38a provided in the concave bottom portion 32a is closed to seal the container 10a. The recess bottom portion 32a is elastically deformed by receiving the vapor pressure in the container, and a gap is formed between the upper surface 22a of the projection and the bottom portion 32a of the recess, and the steam passing through the gap is discharged from the vapor discharge hole 38a. This constitutes a steam discharge opening / closing part (pressure adjustment mechanism). That is, when the entire container 10a is heated by microwaves in a state in which the convex upper surface 22a and the concave bottom 32a are in close contact with each other, moisture inside the container 10a is heated to generate steam, thereby generating steam in the container 10a. Although the vapor pressure increases, if the vapor pressure exceeds a certain limit, a gap is formed between the convex upper surface 22a and the concave bottom portion 32a as shown in FIG. 3, and the vapor is discharged from the vapor discharge hole 38a through the gap. The

  When the heating is finished, the temperature inside the container 10a is lowered, and the internal pressure of the container 10a is lowered. Therefore, the concave bottom 32a that is elastically deformed and once lifted up automatically comes into close contact with the convex upper surface 22a, and the inside of the container 10a. Seal again.

In this way, since the pressure of the vapor in the container can be adjusted, even if the sealed container is heated by microwaves in a microwave oven, it does not explode, and in a steam atmosphere in a pressurized state higher than atmospheric pressure. Because it can be cooked in, it has a steaming effect.
Further, since the steam discharge hole 38a is provided inside the recess 50a, even if the discharged water vapor becomes water droplets, the water droplets remain in the recess 50a.

  The container body 20a and the upper lid 30a are made of a plastic material having good heat resistance such as stretched polystyrene (OPS), heat-resistant stretched polystyrene (heat-resistant OPS), or polypropylene (PP). It can be formed by a thermoforming method.

Embodiments 2 and 3

Next, second and third embodiments of the present invention will be described with reference to FIGS.
FIG. 4 is a longitudinal sectional view of a container 10b according to the second embodiment of the present invention, and FIG. 5 is a longitudinal sectional view of a container 10c according to the third embodiment of the present invention. 4 and 5, reference numerals are omitted for the same members as those in the first embodiment of the present invention. The same applies to FIGS. 6 to 14 showing fourth to fourteenth embodiments, which will be described later.

  As shown in FIG. 4, the convex portion 40b of the second embodiment has the same shape as the convex portion 40a of the first embodiment, but is provided at the concave bottom portion 32b when the container body 20b and the upper lid 30b are fitted. The protrusion 40b is formed to be inserted into the steam discharge hole 38b. That is, so that the container 10b is hermetically sealed, a part of the convex side surface 24b is in close contact with the peripheral edge of the vapor discharge hole 38b to close the vapor discharge hole 38b, thereby forming a pressure adjustment mechanism.

  Unlike the first embodiment in which the top surface 22 of the convex portion and the bottom portion 32 of the concave portion are in contact with each other, in the second embodiment, only a part of the conical convex side surface 24b is in close contact with the vapor discharge hole 38b. Since there is little contact surface and the recess bottom 32b that has received the vapor pressure is elastically deformed, a gap is likely to be formed between the projection side surface 24b and the steam discharge hole 32b.

  Therefore, if it is a food that suppresses the discharge of steam and is desired to be cooked in a relatively high pressurized water vapor atmosphere, the container of the first embodiment is used, and a food that generates a large amount of steam. If so, the container of the second embodiment can be used, and a desired container can be obtained according to its application.

  The constituent members other than the pressure adjusting mechanism, the method for fitting the container main body 20b and the upper lid 30b, and the like are the same as those in the first embodiment of the present invention, and the description thereof will be omitted.

Further, as an application form of the second embodiment, the head portion of the convex portion may be a hemispherical shape, and a part of the spherical shape may be in close contact with the periphery of the vapor discharge hole 38c, thereby closing the vapor discharge hole 38c. Good (see the third embodiment, FIG. 5).
Also in this case, as in the second embodiment, the recess bottom portion 32c that has received the vapor pressure is elastically deformed, so that a gap is easily formed between the convex portion side surface 24c and the vapor discharge hole 32c, so that the vapor is also easily discharged.

Embodiment 4

Next, a fourth embodiment of the present invention will be described with reference to FIG.
FIG. 6 is a longitudinal sectional view of a container 10d according to the fourth embodiment of the present invention.

  In the fourth embodiment, a small frustoconical convex portion 40d 'is further provided on the convex upper surface 22d of the container body 20d, concentrically with the vapor discharge hole 38d. Since the diameter of the convex portion 40d 'is smaller than the diameter of the steam discharge hole 38d, the side surface of the convex portion 40d' and the peripheral edge of the vapor discharge hole 38d do not contact each other, and the convex portion upper surface 22d (head) is the concave bottom portion 32d. The vapor discharge hole 38d is closed by closely contacting with the container 10d, and the container 10d is sealed.

  However, the side surface of the convex portion 40d 'and the peripheral edge of the vapor discharge hole 38d may be in contact with each other so that the container is difficult to discharge the vapor.

Embodiment 5

  In the first to fourth embodiments of the present invention, the steam in the container is discharged at the time of heating, and the pressure adjustment mechanism is closed and the container is sealed after the heating is completed. If the pressure is left as it is, it may not be able to withstand the negative pressure, and the container body or the upper lid may be dented and deformed, resulting in liquid leakage.

Therefore, in order to prevent the container from being deformed due to the negative pressure state in the container, the convex portion 40 may be provided with a depressurizing air introduction missing portion (see the fifth embodiment, FIGS. 7A to 7C). .)
7A is an exploded perspective view of the container 10e according to the fifth embodiment of the present invention, FIG. 7B is a top view of the container 10e, and FIG. 7C is a cross-sectional view taken along the line cc of FIG. The figure is shown.

  In the fifth embodiment, an air introduction notch portion 110e is formed from the convex portion side surface 24e of the container body 20e to the convex portion upper surface 22e. As shown in FIG. 7B, the container 10e is hermetically sealed because the top of the notch 110e is covered by the recess bottom 32e of the upper lid 30e, but during heating, the gap between the notch 110e and the recess bottom 32e is A gap is formed in the steam, and steam is also discharged from the gap.

  After the heating, the inside of the container 10e is in a negative pressure state. In this case, the concave bottom portion 32e covering the top of the notch 110e is bent by the negative pressure in the container, and the convex top surface 22e and the concave bottom portion A gap is generated in 32e, and air outside the container 10e is introduced through the gap, thereby eliminating the negative pressure state in the container 10e. When the negative pressure state in the container 10e is eliminated, the recess bottom 32e again closes the upper portion of the notch 110e, so that the container 10e is sealed.

Embodiment 6

Further, in order to prevent the container from being deformed by the negative pressure force in the container, in the sixth embodiment, at least one of the convex side surface 24f, the concave side surface 34f, the container main body side surface 48f, the upper lid side surface 58f, and the upper lid upper portion 36f. The bellows structure portion 60f is provided in the container, and the container main body 20f and the upper lid 30f itself expand and contract in accordance with the increase and decrease of the vapor pressure in the container 10f (see FIG. 8).
FIG. 8 shows a longitudinal sectional view of a container 10f according to a sixth embodiment of the present invention. In FIG. 8, for convenience of explanation, the bellows structure portion 60f is provided on all of the convex side surface 24f, the concave side surface 34f, the container main body side surface 48f, the upper lid side surface 58f, and the upper lid upper portion 36f.

By forming the structure as described above, during heating, the bellows structure portion 60f is subjected to the vapor pressure, and the volume of the container 10f is increased to prevent a rapid increase in the vapor pressure in the container 10f. When the pressure cannot be absorbed completely, the steam is discharged by a pressure adjusting mechanism including the convex upper surface 22f, the concave bottom 32f, and the vapor discharge hole 38f.
After the heating is finished, when the temperature in the container 10f decreases and the container 10f has a negative pressure, the bellows structure portion 60f contracts, thereby eliminating the negative pressure state in the container 10f. It is possible to prevent the main body 20f or the upper lid 30f from being recessed and deformed.

Embodiments 7 and 8

In the above first to sixth embodiments of the present invention, in order to store a large amount of water vapor in the container 10 and create a sufficient water vapor atmosphere, the upper lid side surface 58 is provided and the height of the upper lid 30 itself is secured. By doing so, the volume of the whole container 10 was ensured. For example, this is a structure suitable for cooking raw meat that is soft and juicy due to the steaming effect in the container 10.
However, for example, when the food to be cooked is a soup such as udon or soup, it is required that the capacity of the container body 20 for storing the food is larger than the steaming effect in the container 10.

Then, 7th and 8th embodiment of this invention suitable for cooking of soup etc. is described with reference to FIG.
FIG. 9A is an exploded perspective view of the container 10g according to the seventh embodiment of the present invention, and FIG. 9B is a longitudinal sectional view of the container 10g.
As shown in FIG. 9, the upper lid 30g of the seventh embodiment does not have the upper lid side surface 58 unlike the first to sixth embodiments, and the height of the upper lid upper portion 36g and the handle 56g is substantially the same. Compared with the first to sixth embodiments, the internal volume of the upper lid 30g itself is small. And the volume which accommodates a foodstuff is increased by making the depth of the container main body 20g the part, and the height of the container 10g whole remains the same as the thing of 1st-6th embodiment, and is used for cooking of soup etc. A suitable shape can be obtained.

  The depth of the concave portion 50g of the upper lid 30g and the height of the convex portion 40g of the container body 20g are relatively determined by the amount of juice or the like put into the container body. That is, it is sufficient that the height of the convex portion 40g is higher than the water level of the juice or the like contained in the container main body 20g. If the height of the convex portion 40g is determined, the depth of the concave portion 50g is determined by the container main body 20g and the upper lid 30g. When fitted, the depth is determined such that the upper surface 22g of the convex portion and the bottom portion 32g of the concave portion are in close contact with each other.

Further, as an application form of the seventh embodiment of the present invention, the upper cover 30g ′ may not be provided with the recess 50g, but the steam discharge hole 38g ′ may be provided directly in the upper cover upper part 36g ′ having a flat central portion (eighth embodiment). (See FIG. 9 (c)).
FIG.9 (c) shows the longitudinal cross-sectional view of container 10g 'of 8th Embodiment.

In this case, the convex upper surface 22g ′ of the container body 20g ′ is in close contact with the upper lid upper part 36g ′ having the vapor discharge hole 38g ′, thereby constituting a pressure adjusting mechanism.
In the tenth embodiment, since the concave portion 50g is not provided in the upper lid 30g ′, the molding / processing becomes easier and the production cost can be suppressed as compared with the configuration in which the concave portion 50g is provided.

  Also, in the container 10g 'of the eighth embodiment, the air introduction notch 110g' can be provided on the convex part 40g '(not shown).

Embodiment 9

Moreover, it is natural that the microwave cooking container of the present invention is not limited to the first to eighth embodiments. For example, in order to heat and cook a plurality of different ingredients in one container at the same time. A partition rib 70h may be provided on the container body (see the ninth embodiment, FIG. 10).
FIG. 10 is an exploded perspective view of a container 10h according to the ninth embodiment of the present invention.

By providing the partition rib 70h, the container body 20h is divided and has two independent food storage portions 28h.
Although FIG. 10 shows the container 10h in which the container body 20h is divided into two, it is natural that a desired number of food storage sections 28h can be provided by providing a plurality of partition ribs 70h. .

Embodiment 10

In the above first to seventh and ninth embodiments, since the steam discharge hole 38 is provided at the bottom of the recess 50, even if the discharged water vapor becomes water droplets, the water droplets remain in the recess 50. .
However, there is a risk that water droplets accumulated in the recess 50 will flow into the container 10 from the vapor discharge hole 38.

Therefore, as a preferred embodiment for preventing water droplets from flowing into the container 10, a water droplet inflow prevention wall is provided at the periphery of the steam discharge hole 38 (tenth embodiment).
FIG. 11 (a) is a longitudinal sectional view of a container 10i according to a tenth embodiment of the present invention, and FIG. 11 (b) is an enlarged sectional view showing a state where water droplets in part B of FIG.

As shown in FIG. 11, the container 10i according to the tenth embodiment of the present invention is formed with a water droplet inflow prevention wall 100i that rises upward from the peripheral edge of the steam discharge hole 38i. Since the small hole 38i ′ above the vapor discharge hole 38i is opened after plastic molding, the diameter is slightly smaller than the diameter of the vapor discharge hole 38i.
When the steam discharged from the steam discharge hole 38i adheres to the concave side surface 34i to form water droplets, and the water droplet falls along the concave side surface 34i, it is constituted by the concave side surface 34i, the concave bottom portion 32i, and the water droplet inflow prevention wall 100i. Therefore, it is possible to prevent water droplets from flowing into the container 10i through the steam discharge hole 38i.

Embodiments 11 and 12

Next, eleventh and twelfth embodiments of the present invention will be described with reference to FIG.
12A is an exploded perspective view of the container 10j according to the eleventh embodiment of the present invention, FIG. 12B is a top view of the container 10j, and FIG. 12C is a cross-sectional view taken along the line cc of FIG. FIG. 12 (d) shows an enlarged cross-sectional view of part D of FIG.

In the eleventh embodiment, unlike the first to seventh and ninth and tenth embodiments, the vapor discharge hole 38 is not formed in the concave bottom portion 32j of the upper lid 30j. Instead, a steam discharge valve 90j is formed at the recess bottom 32j. A steam discharge groove 80j is formed from the convex side surface 24j of the container body 20j to the convex upper surface 22j.
The steam discharge valve 90j is formed by making a cut 92j along the periphery of the recess bottom 32j. Thereby, the steam discharge valve 90j is separated from the concave side surface 34j, and has a structure that can be opened and closed vertically.

The height of the convex portion 40j and the depth of the concave portion 50j are formed so that the convex portion upper surface 22j and the concave portion bottom portion 32j and the steam discharge valve 90j are in close contact with each other when the container body 20j and the upper lid 30j are fitted. Yes. Further, the convex upper surface 22j, the concave bottom 32j, and the steam discharge valve 90j are each formed on a flat surface so as to be in close contact with each other without a gap. When the convex upper surface 22j is in close contact with the steam exhaust valve 90j, the steam exhaust valve 90j closes the steam exhaust groove 80j of the convex upper surface 22j and seals the container 10j.
In addition, since the fitting method of the container main body 20j and the upper cover 30j is the same as that of 1st Embodiment, description is abbreviate | omitted.

  When the container 10j is heated, as shown in FIG. 12 (d), the steam discharge valve 90j is pushed upward by receiving the vapor pressure in the container 10j, and between the convex upper surface 22j and the concave bottom 32j. A gap is generated, and the steam passing through the steam discharge groove 80j is discharged from the gap.

  When the heating is finished, the temperature inside the container 10j is lowered and the internal pressure of the container 10j is lowered. Therefore, the steam discharge valve 90j that is elastically deformed and once lifted up automatically comes into close contact with the upper surface 22j of the convex portion, and the inside of the container 10j is kept inside. Seal again.

  The steam discharge groove 80j also has a function of eliminating the negative pressure state in the heated container 10j, like the air introduction notch portion 110e of the fifth embodiment of the present invention. That is, after the heating is finished, the steam discharge valve 90j that closes the steam discharge groove 80j is bent by the negative pressure in the container 10j, so that a gap is generated between the convex upper surface 22j and the concave bottom 32j. When air is sucked into the container 10j from the gap, the negative pressure state in the container 10j is eliminated.

  The shapes of the steam discharge groove 80j and the steam discharge valve 90j are not particularly limited. For example, by increasing the area of the steam discharge groove 80j as viewed from the upper surface or increasing the cut 92j portion, It is possible to increase the steam discharge amount by increasing the area of the discharge valve 90j, or the like according to the use of the container 10j.

  Also, the container 10j of the eleventh embodiment can be provided with a bellows structure part 60j (not shown) as in the sixth embodiment, and the vapor pressure in the container 10j is controlled by the expansion / contraction function of the bellows structure part 60j. Can be adjusted.

Furthermore, as an application form of the eleventh embodiment of the present invention, the steam discharge valve 90k may be provided directly on the upper lid upper portion 36k having a flat central portion without providing the recess 50 in the upper lid 30k (the twelfth embodiment, FIG. 12 (e).)
FIG.12 (e) shows the longitudinal cross-sectional view of the container 10k of 12th Embodiment.

  In 12th Embodiment, since the recessed part 50 is not provided in the upper cover 30k, compared with the structure which provides the recessed part 50, shaping | molding / processing becomes easy and production cost can be held down.

Embodiment 13

Next, FIG. 13 shows a thirteenth embodiment as an application form of the ninth embodiment. 13A is an exploded perspective view of the container 10m of the thirteenth embodiment, FIG. 13B is a top view of the upper lid, FIG. 13C is a top view of the container body, and FIG. It is a longitudinal cross-sectional view of the whole container in the dd line of 13 (b). The container main body 10m of this embodiment is divided by a central partition rib 70m and has two independent food storage portions 28m and 28m, as in the ninth embodiment. A male rib 70m ′ is provided on 70m, and a female rib 70m ″ is provided at a position corresponding to the male rib 70m ′ on the upper lid 30m so as to be fitted to each other, and a pair of steam discharge holes 80m, 80m is provided. The pressure adjusting mechanism is configured by bringing the pressure adjusting convex portions 40m, 40m of the container body into close contact with the vapor discharge holes 80m, 80m. The independence of the two food storage portions 28m and 28m is enhanced by the male rib 70m 'crossing the center of the container and the female rib 70m''at the position corresponding to the male rib 70m'. It is possible not only to prevent the ingredients from being transferred to the foodstuffs, but also to increase the strength of the container, and even if the inside becomes negative pressure, it is difficult to be crushed.
Although not shown, if the female rib 70m ″ is also provided with a steam discharge hole, the steam from the two food storage portions 28m and 28m is effectively discharged without joining, and this steam discharge hole If it is brought into close contact with the male rib 70m ′, it functions as an additional pressure adjusting mechanism.
Furthermore, if the female ribs 70m '' and the male ribs 70m 'are also fitted with concave grooves corresponding to the convex strips provided on both side surfaces, the sealing performance of the container can be further improved.

Embodiment 14

  In the above embodiment, the pressure adjustment mechanism is provided in the center of the container, but the present invention is not limited to this, and the pressure adjustment mechanism may be in the corner of the container. FIG. 14A is an exploded perspective view of the container 10n according to the fourteenth embodiment of the present invention when the pressure adjusting mechanism is located at the corner of the container, FIG. 14B is a top view of the upper lid, and FIG. ) Is a top view of the container body, FIG. 14D is a longitudinal sectional view of the entire container taken along the line dd in FIG. 14B, and FIG. 14E is an enlarged longitudinal sectional view of the main part when the pressure is increased. FIG. 14 (f) is an enlarged vertical sectional view showing a main part during pressure reduction. In the fourteenth embodiment, the pressure adjusting mechanism including the pressure adjusting convex portion 40n of the container main body and the pressure adjusting concave portion 50n of the upper lid is provided at two diagonal corners of the container 10n. In this way, the inner volume of the container can be increased by setting the position of the pressure adjusting mechanism to the corner. Furthermore, by providing the container body 20n with a projection 44n into which the steam discharge hole 38n is fitted, the upper lid 30n is hardly moved upward even when the pressure is increased, and this has the effect of increasing the steaming effect. Further, as shown in FIG. 14 (e), when the pressure rises, the upper lid 30n is lifted, and the steam is discharged over the stopper 44n 'provided inwardly on the protrusion 44n, but the stopper around the inner periphery of the container body 20n. While it stops at 20n ′ and does not come off, during decompression, as shown in FIG. 14 (f), even if the upper lid 30 is lowered, it stops at the stopper 44n ′, so that outside air is introduced into the container. Thus, the container is prevented from being crushed.

  In addition, although the cross-sectional shape of an upper cover recessed part and the convex part of a container main body is circular in embodiment shown in figure, it is not limited to circular, A polygon, an ellipse, etc. may be sufficient.

The disassembled perspective view of the container of 1st Embodiment of this invention. (A) is a top view of the container of 1st Embodiment of this invention, (b) is a longitudinal cross-sectional view in the bb line of (a), (c) is an expanded sectional view of the C section of (b). (A) is a longitudinal cross-sectional view at the time of the heat cooking of the container of 1st Embodiment of this invention, (b) is an expanded sectional view of the B section of (a). The longitudinal cross-sectional view of the container of 2nd Embodiment of this invention. The longitudinal cross-sectional view of the container of 3rd Embodiment of this invention. The longitudinal cross-sectional view of the container of 4th Embodiment of this invention. (A) is a disassembled perspective view of the container of 5th Embodiment of this invention, (b) is a top view of a container, (c) is sectional drawing in the cc line of (b). The longitudinal cross-sectional view of the container of 6th Embodiment of this invention. (A) is a disassembled perspective view of the container of 7th Embodiment of this invention, (b) is a longitudinal cross-sectional view of a container, (c) is a longitudinal cross-sectional view of the container of 8th Embodiment of this invention. The disassembled perspective view of the container of 9th Embodiment of this invention. (A) is a longitudinal cross-sectional view of the container of 10th Embodiment of this invention, (b) is an expanded sectional view of the state in which the water droplet of the B section of (a) accumulated. (A) is an exploded perspective view of an eleventh embodiment of the present invention, (b) is a top view of the container, (c) is a sectional view taken along the line cc of (b), and (d) is a sectional view of (c). The expanded sectional view at the time of the heat cooking of D section, (e) is a longitudinal cross-sectional view of the container of 12th Embodiment. (A) is an exploded perspective view of the container of the thirteenth embodiment, (b) is a top view of the upper lid, (c) is a top view of the container body, and (d) is a dd line in FIG. 13 (b). The longitudinal cross-sectional view of the whole container in FIG. (A) is an exploded perspective view of a container 10n according to a fourteenth embodiment of the present invention, (b) is a top view of an upper lid, (c) is a top view of a container body, and (d) is a top view of FIG. 14 (b). The longitudinal cross-sectional view of the whole container in the dd line | wire, (e) is a principal part enlarged vertical sectional view at the time of a pressure rise, (f) is a principal part enlarged longitudinal cross-sectional view at the time of pressure reduction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10: Container for microwave oven 20: Container main body 30: Upper lid 38: Steam discharge hole 40: Pressure adjustment convex part 42: Fitting part 50: Pressure adjustment concave part 60: Bellows structure part 80: Steam discharge groove 90: Steam Discharge valve 100: Water droplet inflow prevention wall 110: Not-in-use portion for introducing air during decompression

Claims (14)

A microwave cooking container comprising a container body for storing ingredients and an upper lid fitted to the container body,
The container body has a pressure adjustment convex portion extending inward,
The upper lid has a pressure adjusting recess extending inward from the upper surface,
The bottom of the pressure adjusting recess has a steam discharge hole,
The pressure adjusting mechanism is constituted by the pressure adjusting convex portion and the steam discharge hole,
Microwave cooking container.   The microwave cooking container according to claim 1, wherein an upper surface of the pressure adjusting convex portion is in close contact with a bottom surface of the pressure adjusting concave portion.   The container for microwave oven cooking of Claim 1 with which a part of side surface of the convex part for pressure adjustments closely_contact | adheres to the periphery of the said steam exhaust hole.   The container for microwave oven cooking in any one of Claim 1 to 3 with which the lack part for air introduction at the time of pressure reduction is provided in the said convex part for pressure adjustment.   The microwave oven according to any one of claims 1 to 4, wherein at least one of a side surface of the pressure adjusting convex portion, a side surface of the pressure adjusting concave portion, a side surface of the container body, a side surface of the upper lid, and an upper portion of the upper lid has a bellows structure portion. Cooking container.   The container for microwave oven cooking in any one of Claim 1 to 5 which has a water droplet inflow prevention wall which stands | starts up from the periphery of the said steam exhaust hole. A microwave cooking container comprising a container body for storing ingredients and an upper lid fitted to the container body,
The container body has a pressure adjustment convex portion extending inward,
The upper lid has a steam discharge hole,
The pressure adjusting mechanism is constituted by the pressure adjusting convex portion and the steam discharge hole,
Microwave cooking container.   The microwave cooking container according to claim 7, wherein the pressure adjusting convex portion is provided with a notch portion for introducing air during decompression.   The container for microwave oven cooking in any one of Claim 1 to 8 with which the said pressure adjustment mechanism is provided in the corner of the container.   The container for microwave oven cooking in any one of Claim 1 to 9 in which the said container main body has at least 2 foodstuff storage part divided | segmented by the rib for a partition.   The container for microwave oven cooking in any one of Claim 1 to 10 which further comprises a male rib on the partition rib of the said container main body, and the said top cover provides a female rib in the position corresponding to the said male rib. A microwave cooking container comprising a container body for storing ingredients and an upper lid fitted to the container body,
The container body has a pressure adjustment convex portion extending inward,
The upper lid has a pressure adjusting recess extending inward from the upper surface,
The bottom of the pressure adjustment recess has a steam discharge valve, and the pressure adjustment protrusion has a steam discharge groove,
Microwave cooking container.   The microwave cooking container according to claim 12, wherein at least one of a side surface of the pressure adjustment convex portion, a side surface of the pressure adjustment concave portion, a side surface of the container body, a side surface of the upper lid, and an upper portion of the upper lid has a bellows structure portion. A microwave cooking container comprising a container body for storing ingredients and an upper lid fitted to the container body,
The container body has a pressure adjustment convex portion extending inward,
The upper lid has a steam discharge valve, and the pressure adjusting convex part has a steam discharge groove,
Microwave cooking container.

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