JPH10120043A - Container for use in microwave oven - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain the inside of a body at an internal pressure state lower than a first predetermined pressure state and heat food to a high temperature at a higher pressure state than an atmospheric pressure by providing a through hole in a lid and bringing a packing or a valve which comprises an elastic material which is not induced by high frequency into contact with the through hole from an external face. SOLUTION: A packing 30 comprises a pressed part 31 between an opening end of a container body 10 and a cover 22 of a lid 20 and a seal 33 between an inner side of the opening end of the container body 10 and a protrusion 21a of the lid 20. The seal 33 exhibits an approximately J-shaped cross section, wherein the lower end of the approximate J-shape of the cross section is in contact with a periphery of a lower end of a protrusion 11 of the container 10. In addition, a through hole 23 is provided at a border between the cover 22 and the protrusion 21a of the lid 20, while the seal 33 is in elastic contact with an end of the through hole 23 on an outer peripheral side of the protrusion 21a. A first pressure at a predetermined atmospheric pressure or higher is set by pressing force of the container body 10, the cover 22 of the lid 20 and the pressing part 31 of the packing 30, and an elastic state between the protrusion 11 and the lower end of the container body 10 serves as a safety valve, setting a second pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food container, and more particularly to a method for performing dielectric heating in a microwave oven or the like.

[0002]

2. Description of the Related Art As a conventional food container of this kind, there is a technique disclosed in Japanese Utility Model Publication No. 57-57016. That is, the above-described technique includes a head having a conical surface or a rotation curve surface, a shank extending from the head at the center of the conical surface or the rotation curve surface, and a plurality of elastic members inclined from the lower end of the shank. The present invention relates to an airtight stopper for a food container in which a projection and a flexible material are integrally formed.

[0003] The airtight stopper of a food container configured as described above can heat the food in the food container, and if it generates steam by heating, the steam can be released by heating the container. The air in the food container can be discharged by the generated vapor pressure. When the air in the food container is exhausted, atmospheric pressure acts on the upper surface of the head, and the lower part of the head is pressed against the upper edge of the circular hole to maintain a vacuum state.

[0004]

However, the above-mentioned hermetic plug of a conventional food container has a head having a conical surface or a rotation curve surface and a handle portion extending from the head at the center of the cone surface or the rotation curve surface. And, a plurality of elastic projections inclined from the lower end of the handle portion are formed integrally with a flexible material, but the form is plural, and in the food container from which air is discharged. The pressure varies.

[0005] In addition, when heating in a microwave oven, it can be performed with the lid of the food container closed, but the processing time of the food is shortened because the vapor pressure in the heated state of the food is substantially equal to the atmospheric pressure. Not something. Therefore, an object of the present invention is to provide a microwave oven container having a simple structure and capable of increasing the vapor pressure in a container in a food heated state.

[0006]

SUMMARY OF THE INVENTION A container body and a lid made of a material that is not dielectrically heated by high frequency, and an elastic material disposed between an opening end of the container body and the lid and not dielectrically heated by high frequency. A microwave oven container comprising: a packing comprising: a lid body and a container body that are engaged with, engaged with, attached to, or integrated with the lid body by the packing; The packing or the valve made of an elastic material that is not insulated by high frequency, of the microwave oven container by contacting from the outer surface, the packing or the valve, the internal pressure of the container body is set, the predetermined When the first pressure state is equal to or higher than the atmospheric pressure, the internal pressure of the container body is reduced to a predetermined pressure. Further, when the internal pressure of the container body is lower than the atmospheric pressure, the container body and the lid or the space between the lid and the container are brought into the mounted, crimped or sealed state.

[0007]

In the present invention, when the food contained in the container body is, for example, the food contained in the container body is dielectrically heated by an ultra-high frequency such as a microwave oven, the open end of the container body and the opening end thereof are separated. The packing made of an elastic material disposed between the cover and the cover keeps the inside of the container body at an internal pressure lower than a predetermined first pressure state and heats the food at a high temperature higher than the atmospheric pressure. I do. In response to this state change, the packing is brought into a pressure-bonded state to the container body / lid. When the container main body has reached an internal pressure state equal to or higher than the predetermined first pressure state, the internal pressure of the container main body is reduced, and the inside of the container main body is set to the predetermined first pressure state. Further, when the internal pressure is reduced to a predetermined first pressure or less due to a temperature drop of the food in the container body or the like, the space between the container body and the lid is sealed.

[0008] Therefore, the pressure in the container in the food heated state can be increased to the atmospheric pressure or higher, and the food heating temperature can be increased. Alternatively, since the pressure in the container can be easily reduced by lowering the temperature of the food in the heated container, the reduced pressure is suitable for storage. Further, when the food is, for example, food stored in the container body is dielectrically heated by an ultra-high frequency such as a microwave oven, the valve member made of an elastic material that is in close contact with the outer surface of the through-hole provided in the lid, The inside of the container body is maintained at an internal pressure state lower than a predetermined first pressure state, and the food is heated to a high temperature in a high pressure state higher than the atmospheric pressure. When the container main body has reached an internal pressure state equal to or higher than the predetermined first pressure state, the internal pressure of the container main body is reduced, and the inside of the container main body is set to the predetermined first pressure state.

When the internal pressure drops below a predetermined first pressure due to a temperature drop of food in the container body or the like, the space between the container body and the lid is sealed. Therefore, the pressure in the container in the food heating state can be increased to the atmospheric pressure or higher, and the food heating temperature can be increased. Alternatively, since the pressure in the container can be easily reduced by lowering the temperature of the food in the heated container, the reduced pressure is suitable for storage.

[0010]

Embodiments of the present invention will be described below. FIG. 1 is a central longitudinal sectional view of a main part of a microwave oven container according to an embodiment of the present invention. In FIG. 1, the packing 30 is a container body 1.
And a sealing portion disposed between the inside of the opening end of the container body 10 and the protruding portion 21 a of the lid 20. And a unit 33. The sealing portion 33 has a substantially j-shaped cross section, and is in contact with the lower end of the substantially j-shaped cross section and the periphery of the lower end of the ridge 11 inside the open end of the container body 10. At the boundary between the cover 22 and the protruding portion 21a of the lid 20, a through-hole 23 penetrating from the inside to the outside of the one or more protruding portions 21a is provided, and the outer periphery of the protruding portion 21a is provided. At the end of the through hole 23 on the side, the sealing portion 33 elastically contacting the end of the through hole 23 is located.

Therefore, the microwave oven container according to the present embodiment constructed as described above has a predetermined large pressure due to the clamping force between the container body 10, the cover 22 of the lid 20, and the clamping portion 31 of the packing 30. A first pressure above atmospheric pressure is set. Further, since the lower end of the sealing portion 33 of the packing 30 has a substantially j-shaped cross section, the lower end of the sealing portion 33 abuts around the lower end of the ridge 11 inside the opening end of the container main body 10. Part 11
The container body 10 and the lid 20 depend on the state of elastic contact with the lower end of the container.
, That is, a predetermined second pressure to function as a safety valve.

FIG. 2 is a longitudinal sectional view of a waist center of a microwave oven container according to a second embodiment of the present invention. In FIG. 2, the lid 20c has a substantially disc-like shape that can be fitted to the opening end 12 of the container body 10c and that can be placed on the step portion 13, and the outer periphery of the lid 20c. In the vicinity, the container body 10
one or more through holes 2 penetrating from inside to outside of c
5a is provided. Further, the lid 20c is provided with a pressure equalizing hole 25b from the outer periphery with respect to the single or plural through holes 25a.
Are drilled. The pressure equalizing hole 25b is provided in the packing 3
0 and communicates with the space between the outer peripheral curved portion 35c and the outer periphery of the lid 20c.

Therefore, when the vapor pressure in the container main body 10c increases, the outer peripheral curved portion 35c of the packing 30 and the lid 20c pass through a part of the through hole 25a and the equalizing hole 25b.
The vapor pressure is supplied to a space between the outer periphery and the outer periphery of the steam. As a result, even if the pressure in the space between the outer peripheral curved portion 35c and the outer periphery of the lid 20c is increased and the vapor pressure in the container main body 10c is increased, the packing 30 retains the container main body 10c due to the internal pressure.
The function of attaching / detaching to / c and the lid 20c is provided to stabilize the mounting state of the container body 10c and the lid 20c. Therefore, the internal vapor pressure of the container main body 10c, which is the predetermined second pressure that functions as a safety valve, can be determined to an arbitrarily high pressure as needed.

FIG. 3 is a front view including a partial longitudinal section of a microwave oven container according to a third embodiment of the present invention. In the figure,
Since the same reference numerals and symbols as those in the above-described embodiments indicate the same or corresponding parts, duplicate description will be omitted here. In FIG. 3, a lid 20D is fittable to the container body 10 and extends downward as it goes down.
a, and a cover portion 22 having an outer shape equal to or larger than the open end of the container body 10,
And a handle 27 located at the center of the cover 22. The handle 27 of the cover 22 of the lid 20D
Is provided with a through-hole 26 penetrating from the inside to the outside of one or more container bodies 10.

The packing 30 is provided on the container body 10.
A pressing portion 31 disposed between the open end of the container body and the cover portion 22 of the lid 20D, the inside of the open end of the container body 10 and the lid 20D.
Sealing portion 34 disposed between the projection portion 21a, the outer curved portion 35 covering the outer periphery of the cover 22 of the lid 20D, and the upper surface covering the outer peripheral portion of the upper surface of the cover 22 of the lid 20D. Elastic part 3
6 and are integrally formed. The internal vapor pressure of the container body 10, which is a predetermined second pressure to function as a safety valve, is determined by the packing 30. Upper surface elastic portion 3 covering the outer peripheral portion of the upper surface of cover portion 22 of lid 20D
6 is a through-hole 2 provided in the cover 22 of the lid 20D.
4 is formed away from the end of the fourth.

The through-hole 26 provided near the handle 27 of the lid 20D is a valve member made of an elastic material which is in close contact with the outer surface end of the through-hole 26 provided in the handle 27 of the lid 20D. The upper surface elastic part 41 of 40 is in close contact. With this, the vapor pressure of the first pressure equal to or higher than the predetermined atmospheric pressure that can be maintained by the container body 10 is set. The valve member 40 is formed of a sealing member such as silicone rubber which is rich in elasticity and is not dielectrically heated by high frequency.
An upper surface elastic portion 41 having a portion closely contacting the outer surface end of the through hole 26 and a holding portion 42 for positioning the upper surface elastic portion 41 on the handle 27 of the lid 20D. Particularly, in the case of the present embodiment, the valve member 40 is
1 and the holding portion 42 are integrally formed of silicone rubber, and the handle 27 is held by the elastic force of the holding portion 42.

Therefore, in the microwave oven container according to the present embodiment thus configured, the packing 30 is disposed on the outer peripheral portion of the cover portion 22 of the lid 20D, and the elasticity of the pressing portion 31 and the upper surface elastic contact portion 36 is provided. Packing 3
0 is not easily detached from the lid 20D. Further, at this time, even if the elastic force of the packing 30 is increased, the valve member 40 is independent of the valve member 40 and does not change the elastic force of the upper surface elastic contact portion 41 elastically contacting the end of the through hole 23b. The internal vapor pressure of the main body 10 is controlled by the upper elastic contact portion 4 of the valve member 40.
1 can be independently set as the elastic force elastically contacting the upper surface of the lid 20D, and setting the vapor pressure at the first pressure equal to or higher than the predetermined atmospheric pressure becomes extremely easy.

Further, in the container for a microwave oven of this embodiment,
When the internal pressure of the container body 10 is greatly reduced, the upper surface elastic contact portion 41 of the valve member 40 elastically contacting the end of the through hole 26.
By raising the end of the container body, the atmosphere can be introduced into the container body 10, so that the decompression state can be easily released. As described above, the microwave oven containers of the first to third embodiments shown in FIGS. 1 to 3 are container main bodies 10, 10B, and 10C made of components that are not dielectrically heated by a high frequency such as an ultrashort wave. And the container body 10, 1
Lids 20, 20B, 20C covering the open ends of 0B, 10C
And a packing 30 made of an elastic material disposed between the open ends of the container bodies 10, 10B, 10C and the lids 20, 20B, 20C covering the opening ends. 30 is the container body 10,
When the internal pressure of 10B, 10C is in a first pressure state equal to or higher than a set predetermined atmospheric pressure, the container bodies 10, 10B, 10C
Of the container body 10, 10
When the internal pressure of B, 10C is lower than the atmospheric pressure, the container bodies 10, 10B, 10C and the lids 20, 20B, 20
C is sealed. In an embodiment of this type of the invention, when the food contained in the container bodies 10, 10B, 10C is heated, the open ends of the container bodies 10, 10B, 10C and the lids 20, 20B, 20C covering the same are heated. The packing 30 made of an elastic material disposed between the container body 1
The inside of the containers 0, 10B, and 10C can be press-bonded and maintained at a predetermined first internal pressure state, and the inside of the container bodies 10, 10B, and 10C can be heated to a high temperature at a predetermined high internal pressure. Also, when the internal pressure of the food in the container bodies 10, 10B, 10C decreases due to a temperature drop or the like, the container bodies 10, 10B, 10C,
The space between 10C and the lids 20, 20B, 20C can be sealed. Therefore, the pressure in the container in the food heating state can be increased to a predetermined value or more, and the food heating temperature can be increased. Also, once heated container bodies 10, 10
B, By lowering the temperature of the food in 10C,
The pressure in the container bodies 10, 10B, and 10C can be easily reduced to a low pressure state, and a reduced pressure state suitable for storage can be obtained.

Therefore, the container bodies 10, 10B, 10
When the food contained in C is heated, the container body 10,
Open ends of 10B and 10C and lids 20 and 20 covering them
The packing 30 made of an elastic material disposed between the container body 10, 10B, and 20C maintains the inside of the container body 10, 10B, 10C at a predetermined first internal pressure state, and the container body 10, 10B,
The food can be heated at a high temperature inside the 10C in a predetermined first internal pressure state, that is, a high pressure state higher than the atmospheric pressure. Also, when the internal pressure of the food in the container bodies 10, 10B, 10C decreases due to a temperature drop or the like, the container bodies 10, 10B, 10C and the lid 2
0, 20B and 20C can be in a sealed state. Therefore, the container body 10, 10B, 10
The pressure in C can be made higher than a predetermined value, and the food heating temperature can be raised. Also, once heated container body 1
By lowering the temperature of the food in 0, 10B, and 10C, the pressure in the container bodies 10, 10B, and 10C can be easily reduced to a low-pressure state, and can be reduced to a reduced-pressure state suitable for storage.

The container for a microwave oven according to the third embodiment shown in FIG. 3 is composed of a container body 10 made of a component that is not dielectrically heated by high frequency, and a component that is not dielectrically heated by high frequency that covers the opening end of the container body 10. 20D, a packing 30 made of an elastic material disposed between the open end of the container body 10 and the cover 20D covering the same, and a through hole provided near the handle 27 of the cover 20D. 26 and a through-hole 2 provided in a handle 27 of the lid 20D.
6. A microwave oven container comprising: a valve member 40 made of an elastic material that is in close contact with the outer surface of the container 6; wherein the valve member 40 is a container when the internal pressure of the container body 10 is equal to or higher than a predetermined atmospheric pressure set. The internal pressure of the main body 10 is reduced to a predetermined pressure, and when the internal pressure of the main body 10 is lower than the atmospheric pressure, the space between the main body 10 and the lid 20D is sealed.

Therefore, in the embodiment of the present invention, when the food stored in the container body 10 is heated, the lid 20D
A valve member 40 made of an elastic material that is in close contact with the outer surface of the through hole 26 provided in the container body 10 maintains the inside of the container body 10 in a vapor pressure state at a first pressure equal to or higher than a predetermined atmospheric pressure, and The food can be heated to a high temperature in a vapor pressure state of a predetermined first pressure. When the internal pressure decreases due to a decrease in the temperature of the food in the container body 10 or the like, when the pressure outside the container body 10 is in the atmospheric pressure state, the space between the container body 10 and the lid 20D is sealed. Therefore, the pressure in the container body 10 in the food heated state can be increased to a predetermined value or more, and the food heating temperature can be increased. In addition, once the temperature of the food in the heated container body 10 is lowered, the pressure in the container body 10 can be easily reduced to a low pressure state, and the reduced pressure state suitable for storage can be achieved.

In the above embodiments, the container body made of a component that is not dielectrically heated by high frequency and the lid covering the open end of the container body are premised on the use of microwaves for dielectric heating of microwaves. However, the practice of the present invention is not limited to use with a microwave oven. However, when used in a microwave oven, the energy is supplied relatively stably,
Microwave oven containers can be standardized. Further, it is possible to easily use it as a long-term storage container for food or the like simply by heating the food or the like in a microwave oven.

The packing made of an elastic material disposed between the opening end of the container body and the lid covering the container body in the above-mentioned embodiment is made of a material which is not ultra-high-frequency dielectrically heated and is made of an elastic material. Synthetic rubber and synthetic resin can be used, and they may be foamed before use.
And the packing may be attached to the container body side,
It may be attached to the lid side. Alternatively, they may be independent without being attached to both the container body and the lid.

Further, the through holes provided near the handle of the lid according to the embodiment of the present invention are formed by singly and plurally.
In practicing the present invention, the number, position, and shape of the through holes are not limited. Furthermore, the same member as the above-described packing can be used for the valve member which is disposed on the handle of the lid of the embodiment of the present invention and is made of an elastic material which is in close contact with the outer surface of the through hole. In the case where it is composed of a lid and a separate member, it may be composed of the above-mentioned packing and another member depending on its constituent members.

[0025]

As described above, the microwave oven container according to the present invention has a container body made of a component that is not dielectrically heated by high frequency and a lid body made of a component that is not dielectrically heated by high frequency and covers the open end of the container body. A packing made of an elastic material disposed between an opening end of the container body and a lid covering the container, wherein the packing is a predetermined pressure in which the internal pressure of the container body is set. When the pressure is equal to or higher than the atmospheric pressure, the internal pressure of the container main body is reduced to a predetermined pressure, and when the internal pressure of the container main body is lower than the atmospheric pressure, the space between the container main body and the lid is sealed. is there.

Therefore, when the food contained in the container body is heated, the packing made of an elastic material provided between the open end of the container body and the lid covering the container body allows the inside of the container body to be in the container. The food can be heated to a high temperature at a predetermined first pressure vapor pressure inside the container main body by maintaining the vapor pressure at a first pressure higher than a predetermined atmospheric pressure that can be maintained by the main body. Further, when the internal pressure decreases due to a temperature drop of the food in the container body, the space between the container body and the lid can be sealed. Therefore, the pressure in the container body in the food heating state can be increased to a predetermined value or more, and the food heating temperature can be increased.
Further, once the temperature of the food in the heated container main body is lowered, the pressure in the container main body can be easily reduced to a reduced pressure suitable for storage.

[0027] The microwave oven container of the present invention comprises a container body made of a component that is not dielectrically heated by high frequency, a lid made of a component that is not dielectrically heated by high frequency that covers an opening end of the container body, A packing made of an elastic material disposed between the open end and the lid covering the opening, a through-hole provided near a handle of the lid, and an outside of the through-hole provided in the handle of the lid. And a valve member made of an elastic material that is in close contact with the direction, when the internal pressure of the container body is a predetermined atmospheric pressure or higher when the internal pressure of the container body is a predetermined pressure, the internal pressure of the container body is increased to a predetermined value. When the pressure is reduced and the internal pressure of the container main body is lower than the atmospheric pressure, the space between the container main body and the lid is sealed.

Therefore, when the food contained in the container body is heated, the valve member made of an elastic material which is in close contact with the outer surface of the through hole provided in the lid body is capable of maintaining the inside of the container body in a predetermined state. , The food can be heated at a high temperature inside the container body under the predetermined first pressure vapor pressure state. Further, when the internal pressure is reduced due to a temperature drop of the food in the container body or the like, when the pressure outside the container body is in the atmospheric pressure state, the space between the container body and the lid is sealed. Therefore, the packing has a function of crimping / attaching to the container body / lid body depending on the internal pressure, the pressure in the container body in the food heated state can be increased to a predetermined value or more, and the food heating temperature can be increased. Further, once the temperature of the food in the heated container main body is lowered, the pressure in the container main body can be easily reduced to a reduced pressure suitable for storage.

[Brief description of the drawings]

FIG. 1 is a central longitudinal sectional view of a main part of a microwave oven container according to a first embodiment of the present invention.

FIG. 2 is a central longitudinal sectional view of a main part of a microwave oven container according to a second embodiment of the present invention.

FIG. 3 is a front view including a partial vertical sectional view of a microwave oven container according to a third embodiment of the present invention.

[Explanation of symbols]

10, 10B, 10C Container main body 20, 20B, 20C, 20D Lid 26 Through hole 27 Handle 30 Packing 40 Valve member In the drawings, the same reference numerals and symbols indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A container body and a lid made of a material that is not dielectrically heated by a high frequency, and a packing made of an elastic material that is arranged between an opening end of the container body and the lid and that is not dielectrically heated by a high frequency. Wherein the packing engages, engages, attaches, or integrates the lid and the container body by the packing, wherein the packing is performed in accordance with a change in the internal pressure of the container body. The space between the body and the lid is sealed, or
A microwave oven container, wherein the container is attached and crimped to a container body and a lid.