JP2007282987A - Container for microwave cooking - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a container for microwave cooking, which has an excellent feature of adjusting a steam pressure during the cooking by a microwave and is molded to have stable quality at a low cost. <P>SOLUTION: In the container for microwave cooking which comprises a bottom container 1 with a flange for accommodating foodstuffs, an upper lid 2 with a flange for fitting to the bottom container 1, and a cap 3 with a flange for fitting to the upper lid 2 and is manufactured by plastic molding while providing a retaining part at a fitting part between an upper cylindrical inner peripheral part 1c of the bottom container 1 and a lower cylindrical peripheral part 2c of the upper lid 2 and a retaining part at a fitting part between an upper cylindrical inner peripheral part 2e of the upper lid 2 and a cylindrical peripheral part 3e of the cap 3 respectively, an opening and closing part for discharging steam is formed by bringing an upper part of the upper lid 2 into close contact with the flange 3a of the cap 3. The increased pressure causes the retaining part of the cap 3 to move beyond the retaining part of the upper lid 2, and a gap between the flange 3a of the cap 3 and the upper part of the upper lid 2 is made to be large to discharge the steam. <P>COPYRIGHT: (C)2008,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.

  A food container for a microwave oven is a simple cooking utensil that can be stored and transported with hermetically sealed food and can be cooked in a short time. And when cooking, it is important to automatically control the vapor pressure, not to leak the seasoning liquid in the container to the outside of the container, and not to contaminate the inside of the microwave oven or the outer periphery of the container. In order to cook, the sealing degree of the container at the time of cooking by heating is high, and it is necessary to make the food quickly and high temperature and to be able to control with higher vapor pressure. To that end, 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.

As a conventional example of this type of cooking utensil, in Patent Document 1, the lid upper wall portion 11bl is set larger than the cap engaging portion 12c during cooking, and the cap can be moved by the vapor pressure. Therefore, a very small pressure is generated in the container due to the frictional resistance between the cap engaging portion and the lid upper wall portion + α, and the cap moves when the steam generated when the temperature rises exceeds the above-mentioned minute pressure. However, since a large amount starts to leak from the steam discharge groove, there is a problem that the heat energy is lost and the temperature rise of the food and seasoning liquid is delayed.
JP 2004-305716 A

  In addition, since the lid body is moved by the vapor pressure between the lid lower portion engaging portion 13c and the main body container 9c, a gap with the main body container is required, and steam leakage also occurs from this part. As a result, the temperature rise of the ingredients and seasoning liquid is further slowed down, and depending on the ingredients, there may be cases where optimum cooking is not possible.

  In addition, since the steam leaks between the lid lower portion engaging portion 13c and the main body container 9c, the outer periphery of the container body may get wet when taking out from the microwave oven. There is also a fear.

  If the movement of the cap is suppressed to increase the vapor pressure in the container, the amount of vapor in the container that leaks from between the main body container and the lid increases, which increases the problem of sliding and burning.

  Furthermore, since the lid body is provided with a plurality of step-like steam discharge grooves, it is difficult to ensure the mold accuracy, and it is difficult to ensure the molding accuracy of the lid body. In particular, the engaging (fitting) portion of the lid with the cap is deformed by being taken by a mold, and the moldability is poor, and the quality is not stable, so the cost increases.

  When cooking in a microwave oven, by reducing steam leakage that occurs when the temperature in the container rises, even cooking ingredients such as boiled fish and porridge that are easily spilled by heating seasonings and broths can be quickly produced. Even if the temperature of water or water rises and the seasoning liquid or boiled water boils and the vapor pressure rises rapidly, before the spill occurs, the vapor is quickly discharged at an appropriate vapor pressure, inside the container or inside the microwave oven. The food is delicious, the food ingredients are not reduced, the food nutrients are not reduced, and the food can be cooked efficiently and safely. An object of the present invention is to provide a microwave cooking container with stable quality and low cost by ensuring the engagement (fitting) accuracy of a cap and an upper lid and eliminating deformation and variations during container molding.

The present invention relates to claim 1.
A flanged bottom container for storing food, a flanged upper lid for fitting with the bottom container, and a flanged cap for fitting with the upper lid, and an upper cylindrical inner peripheral portion of the bottom container and a lower cylindrical outer periphery of the upper lid A microwave cooking container which is provided with a stopper in the fitting part with the part, and further provided with a stopper in the fitting part between the upper cylindrical inner peripheral part of the upper lid and the cylindrical outer peripheral part of the cap. In
The upper lid portion and the cap flange are brought into close contact with each other to form a steam discharge opening / closing portion, and the cap stopper moves over the upper lid stopper due to steam pressure, and the cap flange and the upper lid upper portion A container for a microwave oven which discharges steam by enlarging the gap, and a flanged bottom container for storing foodstuffs, a flanged top lid fitted to the bottom container, and the top lid fitted A flanged cap that fits together, and a retaining portion between the upper cylindrical inner peripheral portion of the bottom container and the lower cylindrical outer peripheral portion of the upper lid, and the upper cylindrical inner peripheral portion of the upper lid and the cap In the microwave cooking container, each provided with a stopper in the fitting portion with the cylindrical outer peripheral portion, plastic molded,
The cap bottom provided with a steam discharge opening and the top bottom of the top lid are in close contact with each other to form a steam discharge opening / closing portion, and the cap prevention by the steam pressure exceeds the top cap prevention. The above problems have been solved by a microwave cooking container characterized in that the steam is discharged by enlarging the gap between the cylinder bottom of the cap and the upper cylinder bottom of the upper lid.

According to the invention according to claim 1,
Ingredients, seasoning liquid, and water in the container are irradiated with microwaves to generate high temperature and water vapor, and the air in the container is expanded to a high temperature. The expanded air and water vapor (hereinafter referred to as water vapor) are the pressure in the container. The bottom lid and the top lid are in close contact with each other when the pressure applied to the top lid is low, and the flange is pushed up by the low pressure applied to the cap without exceeding the cap retention. It is possible to deform, open a gap between the cap flange and the upper part of the upper lid, and discharge steam. When the steam is discharged, the pressure inside and outside the container becomes substantially the same, so the gap is closed, and the opening and closing of the gap and the steam discharge are repeated during heating.

  If the generated vapor pressure suddenly rises and the pressure in the container becomes high, the high pressure applied to the cap will prevent the cap from coming off the top lid and the cap flange and top lid will A large gap with the upper part is created, and the steam is discharged at once, and can be discharged quickly before spilling occurs.

Since the upper lid does not move and prevents the fitting of the upper cylindrical inner peripheral portion of the bottom container and the lower cylindrical outer peripheral portion of the upper lid from moving out, it is possible to make the sealing level higher, so that the leakage of steam Because there is little energy loss, it is possible to quickly raise the temperature of ingredients and seasonings.
In addition, the outer periphery of the bottom container and the upper lid handle is not wetted by steam, so that handling is safe.
In addition, since there is no complicated shape of the steam discharge groove and the cylindrical shape of the top lid is simple, the mold is easy to manufacture and the mold release resistance is small, so there are no problems such as removal during molding and deformation In addition, since the quality and accuracy of the fitting portion are improved, it is easy to ensure airtightness in the container and can be manufactured without vapor leakage, and a high-quality and low-cost container can be provided.

The present invention according to claim 2
The large upper cylindrical inner peripheral portion above the minimum retaining portion of the upper lid serves as a guide when the cap is set on the upper lid, so that it can be easily inserted. Since the forcible length of the undercut portion of the mold can be shortened, the undercut amount can be made sufficiently large, so that the mold can be molded with a stable quality. In the case where the ingredients, conditioner liquid or water boils and the pressure suddenly rises, the cap is removed from the stopper to prevent spilling and the cap from being removed from the top lid.
In addition, foods that suddenly spill may cause the cap to jump out of the upper lid. However, by setting the upper lid to a size smaller than that of the cap removal in the vicinity of the upper surface, the popping out can be prevented.

The present invention according to claim 3 provides:
Since the upper lid and the cap are brought into close contact with each other by the elastic stress between the cap engaging portion and the upper lid engaging portion, it is possible to reduce steam leakage from the fitting portion between the upper lid and the cap when the temperature rises. Fast and high steam pressure.

The present invention according to claim 4 provides:
Since the upper lid and the bottom container are in close contact with each other due to elastic stress, the upper lid engaging part and the bottom container engaging part can reduce the steam leakage from the fitting part of the upper lid and the bottom container when the temperature rises. The rising speed is fast and the steam pressure can be increased.

The present invention according to claim 5 provides:
Since the cap flange and the top surface of the top lid are in close contact with each other due to the elastic stress of the cap flange, steam leakage from between the top lid and the cap when the temperature rises can be reduced. The pressure can also be increased.

The present invention according to claim 6 provides:
Due to the elastic stress of the top cover flange, the top cover flange and the top surface of the bottom container are in close contact with each other, so that steam leakage from the bottom container to the top cover when the temperature rises can be reduced. The vapor pressure can also be increased.

The present invention according to claim 7 provides:
When the seasoning liquid or water boils, the spatter of the steam that suddenly discharged from the steam discharge opening and the initial spillage hit the inner cylindrical surface of the cap, so the outer periphery of the container does not slip and the microwave does not slip When taking out the container from the container, danger can be prevented and contamination in the microwave can also be prevented.

The present invention according to claim 8 provides:
Vapor discharge does not require a plurality of stepped grooves, and the top lid or cap has a simple shape, making it easy to manufacture molds and low mold release resistance, so high-precision parts can be molded without deformation. Can be manufactured at low cost.
Moreover, since it is easy to ensure airtightness in the container, the effect of preventing steam leakage is great. Further, the fitting accuracy between the upper lid and the cap is good, the force for moving the cap is stable, and an appropriate vapor pressure can be controlled.

The present invention according to claim 9 provides:
Since there is no complicated shape steam discharge groove and the top cover is simple, the mold is easy to manufacture and the mold release resistance is small, so there are no problems such as removal during molding, and it is difficult to deform. Since the quality and accuracy of the fitting portion are improved, it is easy to ensure airtightness in the container, and it can be manufactured without vapor leakage, and a high-quality and low-cost container can be provided.

Embodiments of the present invention will be described below.
1 to 9 show the basic configuration of the present invention as the first embodiment.
10 and 11 show an improvement example of the shape of the undercut portion when the upper lid is molded as the second embodiment of the present invention.
12 and 13 show another embodiment of the second embodiment as the third embodiment of the present invention.
FIG. 13 shows a method of fitting the upper lid and the cap as the fourth embodiment of the present invention.
FIG. 14 shows a method of fitting the bottom container and the top lid as the fifth embodiment of the present invention.
FIG. 15 shows a fitting method in which elastic deformation is applied to the flange of the bottom container and the upper lid as the sixth embodiment of the present invention.
16 and 17 show a fitting method in which the upper lid and the flange of the cap are elastically deformed as the seventh embodiment of the present invention.
18 to 20 show a method for discharging steam to the inner periphery of the cap as an eighth embodiment of the present invention.
21 to 24 show a method in which the upper lid and the fitting portion of the cap and the periphery of the steam discharge opening are simplified as Embodiment 9 of the present invention.
25 to 27 show another embodiment of the ninth embodiment as the tenth embodiment of the present invention.

Embodiment 1

First, the first embodiment will be described with reference to FIGS.
1 is a cross-sectional view of the basic structure, FIG. 2 is a top view, FIG. 3 is a top view of the upper lid, FIG. 4 is a cross-sectional view of the steam discharge state when the vapor pressure suddenly rises, and FIG. FIG. 6 is an enlarged sectional view of the upper lid and the cap at a fixed position of the cap, and FIGS. 7 and 8 are enlarged sectional views of the upper lid and the cap in a steam discharge state.

  As shown in FIG. 1 to FIG. 3 and FIG. 5, a bottom container 1 formed of thin plastic with elastic plastic has a food storage part 1m and a cylindrical inner peripheral part 1c provided above the storage part 1m. A flange 1a is provided on the upper portion of the cylindrical inner peripheral portion 1c, and a handle 1k is provided by extending a part of the flange 1a horizontally.

  The top lid 2 is provided with a flange 2a and a handle 2k having substantially the same shape as the flange 1a and the handle 1k of the bottom container 1, and is in close contact with the cylindrical inner peripheral part 1c and the retaining stopper 1d of the bottom container 1 at the lower part of the flange 2a. A lower cylindrical outer peripheral portion 2c having a retaining stopper 2d is provided, an upper surface 2b forming an upper space 2m of the lower cylindrical outer peripheral portion 2c is provided with a steam discharge hole 2g, and an upper portion of the cylinder is formed below the upper surface 2b. An upper cylindrical inner peripheral portion 2e having a substantially equal lower portion is provided with a retaining member 2f, and a bottom opening hole 2j is provided in the cylindrical bottom 2h.

As shown in FIG. 1, the cap 3 is in close contact with the upper surface 2b of the upper lid 2, covers the steam opening hole 2g, is provided with a flange 3a that receives and controls the steam pressure in the container, and opens and closes the discharge of steam. Is provided with a protrusion 3n which increases rigidity and prevents deformation due to vapor pressure, and a cylindrical outer peripheral part 3e and a retaining part 3f which are fitted to the upper cylindrical inner peripheral part 2e and retaining part 2f of the upper lid 2 at the lower part of the flange 3a. And a hemispherical cylinder bottom 3h for receiving the vapor pressure. That is, the upper part of the upper lid 2 and the flange 3a of the cap 3 are brought into close contact with each other to constitute a steam discharge opening / closing part.
The cap 3 is pressurized by steam pressure to push up the flange 3a through the bottom opening hole 2j and through the cylinder bottom 3h and the steam discharge hole 2g.

  As shown in FIG. 5, the stopper 1 d of the bottom container 1 and the bottom stopper 2 d of the upper lid 2 are fitted in such a dimensional relationship that the upper lid does not separate from the bottom container with the steam pressure generated during cooking.

  As shown in FIG. 6, the cylindrical outer peripheral portion 3 e of the cap 3 is held by the upper cylindrical inner peripheral portion 2 e of the upper lid 2 by the upper retaining stopper 2 f of the upper lid 2 and the retaining stopper 3 f of the cap 3.

  As shown in FIG. 7, relatively small steam pressure generated by cooking is applied to the flange 3a and the cylinder bottom 3h of the cap 3 through the bottom opening hole 2j and the steam discharge hole 2g. Since the dimensions of 2f and the cap 3f of the cap 3 are set so as not to exceed the mutual caps, the outer periphery of the flange 3a of the elastic cap 3 is deformed, and the upper surface 2b of the upper lid 2 and the cap A gap is generated between the three flanges 3a, and steam is discharged from the gap.

  As shown in FIGS. 4 and 8, when the vapor pressure in the container suddenly increases, the elastic top lid 2 and the cap are prevented from coming off due to the large vapor pressure applied to the flange 3a and the cylinder bottom 3h. 3f is stopped in the middle of the upper cylindrical inner peripheral portion 2e, and the flange 3a covering the steam discharge hole 2g is also moved to form a relatively large gap between the upper surface 2b and the flange 3a. The inside steam passes through the steam discharge hole 2g, the steam is discharged from between the upper lid and the cap, the pressure in the container is released, and no spill occurs.

Embodiment 2

Next, FIG. 9 and FIG. 10 show only a part different from the first embodiment in the second embodiment.
FIG. 9 is an enlarged cross-sectional view of the upper lid and the cap at a fixed position of the cap, and FIG. 10 is an enlarged cross-sectional view of the upper lid and the cap in a steam discharge state.

As shown in FIG. 9, the upper cylindrical inner peripheral portion 2 e is parallel to the cylindrical outer peripheral portion 3 e of the cap 3 and has a size that is the same as or slightly larger than that of the cap 3 of the cap 3. A cap 3f of the cap 3 is formed.
As shown in FIG. 10, the stopper 3f of the cap 3 in the steam discharge state exceeds the upper stopper 2f of the upper lid 2 and stops in the middle of the parallel portion of the upper cylindrical inner peripheral portion 2e.

Embodiment 3

11 and 12 show only the third embodiment different from the second embodiment. FIG. 11 is an enlarged cross-sectional view of the upper lid and the cap at a fixed position of the cap, and FIG. 12 is an enlarged cross-sectional view of the upper lid and the cap in a steam discharge state.
As shown in FIG. 11, the upper lid 2 has an upper cylindrical inner peripheral portion 2e having a size smaller than that of the cap retainer 3f in the vicinity of the upper surface 2b and the same size as or slightly larger than the retainer 3f of the cap 3 near the upper retainer 2f. is doing.
As shown in FIG. 12, the cap 3 f of the cap 3 at the time of discharging steam exceeds the upper cap 2 upper surface 2 fl of the upper lid 2, and stops in the middle of the upper cylindrical inner peripheral portion 2 e.

Embodiment 4

FIG. 13 shows only a part different from the first embodiment in the fourth embodiment.
FIG. 13 shows an enlarged cross-sectional view of the upper lid and the cap at a fixed cap position.
As shown in FIG. 13, the cap 2f of the top lid 2 is provided with a top surface 2fl and a bottom surface 2f2, and the cap 3 is provided with a top surface 3fl and a bottom surface 3f2, and the top top surface. The width formed by the retaining upper surface 3fl and the retaining lower surface 3f2 is the same or slightly larger than the width formed by 2fl and the upper retaining lower surface 2f2, and is fitted with elastic deformation.

Embodiment 5

FIG. 14 shows only the fifth embodiment different from the first embodiment.
FIG. 14 shows an enlarged cross-sectional view of the bottom container and the top lid.
As shown in FIG. 14, the stopper 1d of the bottom container 1 is provided with a stopper upper surface 1dl and a stopper lower surface 1d2, and the lower lid upper surface 2dl and stopper lower surface 2d2 of the upper lid 2 are provided. With respect to the width formed by the lower surface 1d2, the width formed by the lower retaining surface 2dl and the lower retaining surface 2d2 is elastically deformed and fitted with the same or slightly larger dimensions.

Embodiment 6

FIG. 15 shows only the differences of the sixth embodiment from the fifth embodiment.
FIG. 15 shows an enlarged cross-sectional view of the bottom container and the top lid.
As shown in FIG. 15, the vertical dimension formed by the flange lower surface 2al and the retaining upper surface 2dl of the upper lid 2 is smaller than the vertical dimension formed by the flange upper surface 1al and the retaining lower surface 1d2 of the bottom container 1. By doing so, the flange 2a is elastically deformed and fitted.

Embodiment 7

Only the parts different from the first embodiment are shown in FIG. 16 and FIG. FIG. 16 is an enlarged cross-sectional view of the upper lid and the cap at a fixed position of the cap, and FIG. 17 is an enlarged cross-sectional view of the upper lid and the cap in a steam discharge state.
As shown in FIG. 16, the vertical dimension formed by the flange lower surface 3al of the cap 3 and the retaining upper surface 3f is smaller than the vertical dimension formed by the upper surface 2b of the upper lid 2 and the upper retaining stopper 2f. Thus, the flange 3a is elastically deformed and fitted.

Embodiment 8

  18 to 20, only the parts different from the first embodiment are shown in the eighth embodiment. 18 is a cross-sectional view of the whole cap fixed position, FIG. 19 is a top view, and FIG. 20 is a cross-sectional view in a steam discharge state.

  As shown in FIG. 18, a large bottom opening 2j is provided in the cylinder bottom 2h of the upper lid 2, and a steam discharge hole 3g is provided in the cylinder bottom 3h of the cap 3 on the outer peripheral side of the bottom opening 2j. The cylindrical bottom 3h of the peripheral portion and the cylindrical bottom 2h of the upper lid 2 are brought into close contact with each other to form a steam discharge opening / closing portion, and the cap 3 has a vertical dimension formed by the upper retaining stopper 2f of the upper lid 2 and the cylindrical bottom upper surface 2hl. By making the vertical dimension formed by the retaining 3f and the cylinder bottom 3hl small, the cylinder bottom 2h is elastically deformed and fitted.

In addition, unlike FIG. 18, you may also contact | adhere the vapor | steam exhaust hole periphery of the cylinder bottom 3h and the cylinder bottom 2h.
Although not shown, the cap 3 is held by the upper lid 2 by the upper stopper 2f of the upper lid 2 and the stopper 3f of the cap 3 at a small steam pressure generated by cooking, and the cylinder bottom 2h of the upper lid 2 and the cap 3 Since the bottom 3h of the cylinder warps in the opposite direction and a gap is generated, the steam in the container passes through the steam discharge hole 3g, is discharged to the inner peripheral surface of the cap cylinder, and does not wet the outer periphery of the upper lid with the steam.

  As shown in FIG. 20, when the vapor pressure is applied to the cylinder bottom 3h through the large bottom opening 2j of the cylinder bottom 2h and the vapor pressure in the container suddenly increases, a large amount of steam is added to the cylinder bottom. Due to the vapor pressure, the upper lid 2 and the cap of the elastic body exceed the mutual retaining, the retaining 3f stops in the middle of the upper cylindrical inner peripheral portion 2e, and the cylindrical bottom 3h provided with the steam discharge hole 3g also moves. Since there is a gap between the cylinder bottom 2h and the cylinder bottom 3h, the vapor in the container passes through the vapor discharge hole 3g, the vapor is discharged to the inner surface of the cap cylinder, and the pressure in the container is released, so Do not generate.

Embodiment 9

21 to 24 show an embodiment in which a plurality of steam discharge openings are provided, and only the parts different from the first embodiment are shown.
21 is a cross-sectional view of the fitting portion between the upper lid and the cap, FIG. 22 is a cross-sectional view of the steam discharge port, FIG. 23 is a top view excluding the flange of the cap, and FIG. 24 is a cross-sectional view of the steam discharge state.

  As shown in FIG. 21 to FIG. 23 or FIG. 25, the cap 3 has a cylindrical outer peripheral portion 3e formed of a substantially straight line and an arc, and an upper cylindrical inner peripheral portion 2e of the upper lid 2 formed of a circle, thereby forming a cylindrical outer peripheral portion. The circular arc portion 2e and the circular portion of the cylindrical inner peripheral portion 2e are fitted together to form a substantially meniscal steam discharge opening 23 between the upper cylindrical inner peripheral portion 2e and the cylindrical outer periphery.

  The top cover is formed with a circle, and the cap is formed with a circular arc. The cap is fitted to a part of the top cover circle.

  As shown in FIG. 24 or 27, the steam passes through the steam discharge opening 23 between the upper cylindrical inner peripheral portion 2e and the cylindrical outer peripheral portion 3e, and is discharged from the flange 3a of the cap 3 and the upper lid 2 upper portion 2b. .

Embodiment 10

From FIG. 25 to FIG. 27, the ninth embodiment in the case where the steam discharge opening is an odd number is shown only in a portion different from the first embodiment.
25 is a cross-sectional view of the fitting portion of the upper lid and the cap and the steam discharge port, FIG. 26 is a top view excluding the flange of the cap, and FIG. 27 is a cross-sectional view of the steam discharge state.

  As shown in FIG. 26, the cap 3 has a cylindrical outer peripheral portion 3e formed by three substantially straight lines and three arcs, and the upper cylindrical inner peripheral portion 2e of the upper lid 2 is formed by a circle so that the cylindrical outer peripheral portion 2e The arc portion and the circular portion of the cylindrical inner peripheral portion 2e are fitted, and three steam discharge openings 23 are formed at the diagonals of the three arcs.

Sectional drawing of Embodiment 1 of this invention. FIG. 2 is a top view of the first embodiment. FIG. 3 is a top view of the upper lid of the first embodiment. Sectional drawing of the vapor | steam discharge state when the vapor | steam pressure of Embodiment 1 rises rapidly. FIG. 3 is a partial cross-sectional view of the bottom container and the top lid retaining portion of the first embodiment. FIG. 3 is an enlarged cross-sectional view of an upper lid and a cap at a fixed position of the first embodiment. FIG. 3 is an enlarged cross-sectional view of a cap and an upper lid at a relatively low pressure according to the first embodiment. FIG. 3 is an enlarged cross-sectional view of a relationship between a raised position of the cap and an upper lid when pressure is increased according to the first embodiment. FIG. 6 is an enlarged cross-sectional view of an upper lid and a cap according to a second embodiment. FIG. 6 is an enlarged cross-sectional view of an upper lid and a cap in a vapor discharge state of the second embodiment. FIG. 6 is an enlarged cross-sectional view of an upper lid and a cap at a cap fixed position according to a third embodiment. FIG. 6 is an enlarged cross-sectional view of an upper lid and a cap in a steam discharge state according to a third embodiment. FIG. 6 is an enlarged cross-sectional view of an upper lid and a cap at a cap fixed position according to a fourth embodiment. FIG. 6 is an enlarged cross-sectional view of a bottom container and an upper lid according to a fifth embodiment. The expanded sectional view of the bottom container and upper cover of Embodiment 6. FIG. 10 is an enlarged cross-sectional view of an upper lid and a cap at a cap fixed position according to a seventh embodiment. FIG. 10 is an enlarged cross-sectional view of an upper lid and a cap in a steam discharge state according to a seventh embodiment. FIG. 10 is an overall cross-sectional view of a cap fixed position according to an eighth embodiment. The top view of the cap fixed position of Embodiment 8. Sectional drawing of the vapor | steam discharge state of Embodiment 8. FIG. Sectional drawing of the fitting part of the upper cover of Embodiment 9, and a cap. Sectional drawing of the steam exhaust port of Embodiment 9. FIG. The top view except the flange of the cap of Embodiment 9. FIG. Sectional drawing of the vapor | steam discharge state of Embodiment 9. FIG. Sectional drawing of the fitting part of a top cover and a cap of Embodiment 10, and a steam exhaust port. The top view except the flange of the cap of Embodiment 10. FIG. Sectional drawing of the vapor | steam discharge state of Embodiment 10. FIG.

Explanation of symbols

1: Bottom container (with flange) 1a: Flange 1b: Upper surface 1c: Upper cylindrical inner peripheral part 1d: Retaining stopper 1d1: Retaining stopper upper part 1d2: Retaining stopper lower part 1k: Handle 1m: Storage part 2: Upper lid 2a: Flange 2b : Upper surface 2c: Lower cylindrical outer peripheral part 2d: Lower retaining part 2d1: Upper retaining part 2d2: Lower retaining part 2e: Upper cylindrical inner peripheral part 2f: Upper retaining part 2f1: Upper retaining part 2f2: Upper retaining part 2g : Steam discharge hole 2h: Tube bottom 2j: Bottom opening hole 2k: Handle 3: Cap 3a: Flange 3e: Cylindrical outer periphery 3f: Retaining stopper 3f1: Retaining upper part 3f2: Retaining lower part 3g: Steam discharging hole 3h: Cylinder Bottom 3j: Bottom opening hole 3n: Projection 23: Steam discharge opening

Claims (9)

A flanged bottom container for storing food, a flanged upper lid for fitting with the bottom container, and a flanged cap for fitting with the upper lid, and an upper cylindrical inner peripheral portion of the bottom container and a lower cylindrical outer periphery of the upper lid A microwave cooking container which is provided with a stopper in the fitting part with the part, and further provided with a stopper in the fitting part between the upper cylindrical inner peripheral part of the upper lid and the cylindrical outer peripheral part of the cap. In
The upper lid portion and the cap flange are brought into close contact with each other to form a steam discharge opening / closing portion, and the cap stopper moves over the upper lid stopper due to steam pressure, and the cap flange and the upper lid upper portion It is characterized by discharging the steam by increasing the gap of
Container for microwave oven.   The upper cylindrical inner peripheral part having the same or slightly larger dimension than the upper cap maximum retaining diameter of the cap is provided above the cap upper cap minimum portion of the upper lid with respect to the cap cap maximum diameter portion. For microwave ovens.   The engagement width of the cap is the same as or slightly smaller than the engagement width of the upper lid in the vertical engagement width in which the upper cap prevention of the upper lid and the cap stopper are engaged. 2. Microwave oven container.   The engagement width of the upper lid is the same as or slightly larger than the engagement width of the bottom container in the vertical engagement width in which the bottom container and the upper lid lower part stopper are engaged. 1 or 2 microwave oven containers.   Receiving the flange of the cap on the upper surface of the upper lid, engaging the cap with the cap and the cap with the cap, applying elastic deformation stress to the cap flange to hold the cap on the cap; The container for microwave ovens of Claim 1 or 2.   The upper lid flange is received on the upper surface of the bottom container, and the lower lid retainer and the bottom container retainer are engaged with each other. The flange of the upper lid is subjected to elastic deformation stress so that the upper lid is placed on the bottom container. The container for microwave ovens of Claim 1 or 2 hold | maintained. A flanged bottom container for storing food, a flanged upper lid for fitting with the bottom container, and a flanged cap for fitting with the upper lid, and an upper cylindrical inner peripheral portion of the bottom container and a lower cylindrical outer periphery of the upper lid In the microwave cooking container, a stopper is provided in the fitting part with the part, a stopper is provided in the fitting part between the upper cylindrical inner peripheral part of the upper lid and the cylindrical outer peripheral part of the cap.
The cap bottom provided with a steam discharge opening and the top bottom of the top lid are in close contact with each other to form a steam discharge opening / closing portion, and the cap prevention by the steam pressure exceeds the top cap prevention. The gap between the cylinder bottom part of the cap and the upper cylinder bottom part of the upper lid is increased, and the steam is discharged.
Microwave cooking container.   The container for microwave oven cooking of Claim 1 or 2 provided with the substantially meniscus steam discharge port formed between the upper cylindrical inner peripheral part of the said upper cover, and the substantially linear part of the cylindrical outer periphery of the said cap. The container for cooking a microwave oven according to claim 1, wherein a plurality of opening holes for discharging steam are provided in an upper part of the upper lid facing the flange of the cap.

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