KR101737102B1 - Vaportight container - Google Patents

Abstract

The present invention relates to a sealed container such as a water vapor, and more particularly, to a container having a shape of a receiving portion formed at an edge portion of a container lid, The lid and the container being more tightly coupled to each other.
A container body having a first extension formed to extend outward along a rim of the side wall, and a locking protrusion bent downward from an end of the first extension; And
And a container lid for covering an upper portion of the container main body to seal the inside of the container main body,
And a receiving portion formed on the upper surface of the first extending portion so as to receive the steam generated and generated inside the container body, A second extension portion which is brought into close contact with the side surface; And
And a fastening portion formed at a lower portion of the second extending portion and fastened and fixed so as to surround the fastening protrusion formed on the container body.

Description

[0001] VAPORTIGHT CONTAINER [0002]

The present invention relates to a sealed container such as a water vapor, and more particularly, to a container having a shape of a receiving portion formed at an edge portion of a container lid, The lid and the container being more tightly coupled to each other.

Generally, foods are stored in various containers or containers. Such containers for storing food are stored in various dishes or containers or containers or containers.

In order to store food for a relatively long period of time, it is put in a container with a lid and the lid is closed and kept refrigerated or frozen in a closed state in a refrigerator.

The food storage container generally includes a container having an opened upper surface, a lid for opening and closing the opening, and fixing means for fixing the lid to the main body.

In addition, in the case of a relatively large container, it is desirable to have a handle because it is heavy and inconvenient to carry the container containing the food.

In recent years, various forms of plastic storage containers have been developed. As the fixing means, there is used a fixing member which is connected to the lid or the main body by a hinge so as to fix the lid to be sealed to the main body.

However, when the food storage container is provided with four fixing members on four sides of the container, there is a disadvantage that the user must manually separate the four fixing members when the lid is opened and closed. Particularly, when the food storage container is not used, There is a problem that it is inconvenient to carry or store.

On the other hand, when the food in the container is cooked or warmed by using water vapor in the container, the water vapor should not leak to the outside within a predetermined temperature range.

(Document 1): Korean Patent No. 10-1580161 (registered on December 18, 2015) (Document 2): Korean Registered Utility Model No. 20-0454719 (Registered on July 15, 2011)

The present invention provides a water vapor-tight container in which the container lid is more firmly and tightly connected to the container body due to the pressure of water vapor generated inside the container body so that steam does not leak, .

Further, in the present invention, a fitting groove formed in a handle is fixed to a fitting projection formed in a check valve (an example of an inner pressure adjusting device) in a state in which the container body and the container lid are folded in a folded or rolled shape using a silicone material It is possible to minimize the volume when the closed container is stored, and in particular, to provide a water vapor-tight container which can be folded or rolled in a rolled state even when the container body and the container lid are engaged.

The various problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

In the water vapor-tight container according to the present invention,

A container body having a first extension formed to extend outward along a rim of the side wall, and a locking protrusion bent downward from an end of the first extension; And

And a container lid which covers an upper portion of the container main body and seals the inside of the container main body,

In the container lid,

And a receiving portion formed in the upper portion of the horizontal portion 115 of the first extending portion so as to receive the steam generated and generated in the container body, A second extension that is in close contact with the top surface 117 and the side surface; And

And a fastening portion formed at a lower portion of the second extension portion and fastened and fixed to surround the fastening protrusion formed on the container body.

According to another aspect of the present invention, there is provided a container comprising: a container body having a first extension formed to extend outward along a rim of a side wall, and a latching protrusion bent downward from an end of the first extension;

A container lid which covers an upper portion of the container body and seals the inside of the container body; And

And a check valve which is fitted in the discharge hole formed in the container lid and opens and closes the discharge hole,

The container lid,

A portion of the first extension extending from an edge of the container lid and facing a horizontal portion of the first extension portion is bent upward to include a semi-circular shape, A second extension part formed to be in close contact with a top surface and a side surface of the first extension part; And

And a fastening portion formed at a lower portion of the second extension portion and fastened and fastened so as to enclose a fastening protrusion formed on the container body and sealing the internal space of the container body.

According to another aspect of the present invention, there is provided a container comprising: a container body having a first extension formed to extend outward along a rim of a side wall, and a latching protrusion bent downward from an end of the first extension;

A container lid which covers an upper portion of the container body and seals the inside of the container body; And

And a check valve which is fitted in the discharge hole formed in the container lid and opens and closes the discharge hole,

The container lid,

A portion extending from a rim of the container lid and facing a horizontal portion of the first extending portion is formed in an upwardly curved shape so that a receiving portion is formed so that water vapor generated in the container body can be received, A second extension portion that is in close contact with an upper end surface and a side surface of the first extension portion;

A fastening portion formed at a lower portion of the second extension portion and fastened and fixed to enclose a fastening protrusion formed on the container body and sealing the internal space of the container body; And

And a handle formed by extending a predetermined length from one side of the container lid and having a fitting groove formed on an outer side thereof,

The fitting groove is engaged with the fitting projection formed on the check valve so that the container lid is folded or curled.

In other words, the container lid is formed by extending horizontally from the rim of the container lid, and an intermediate portion facing the horizontally extending portion of the first extending portion is bent upward and formed into a shape including a semi-circular shape And a second extension portion formed in the housing portion to receive water vapor generated in the container body and closely contacted with a top surface of the first extension portion and a vertical side portion corresponding to a secondary extension of the first extension portion.

The container may further include a sealing part located at a predetermined distance inward from the rim of the container lid and being closely attached to the inner side surface of the side wall of the container body according to the steam pressure and sealing the inside of the container body.

The details of other embodiments are included in the detailed description and drawings.

The water vapor hermetically sealed container according to the present invention can be used in a state in which the container lid is firmly and closely attached to the container body by the pressure of water vapor generated in the container body and generated in the container body, So that there is an effect of preventing water vapor leakage.

In addition, the sealed container for food storage according to the present invention is formed by using a container body and a lid of a container made of a silicone material, folding or folding in a rolled shape and fixing the fitting groove formed in the handle to the fitting projection formed on the check valve, The volume can be minimized when the closed container is stored, and in particular, the container can be folded or rolled in a rolled state even when the container body and the container lid are combined.

It will be appreciated that embodiments of the technical idea of the present invention can provide various effects not specifically mentioned.

1 is a perspective view of a water vapor-tight container according to the present invention.
2 and 3 are exploded perspective views of a water vapor-tight container according to the present invention.
3 is a plan view of a water vapor-tight container according to the present invention.
4 is a cross-sectional view of the vapor-tight container cut along the line AA in Fig.
6 is a view showing a state in which a ring is installed in a water vapor-tight container according to the present invention.
7 is a view showing a state in which the water vapor-tight container according to the present invention is folded or rolled up into a rolled form.
FIG. 8 is a view showing a structure for combining a handle formed on one side of a lid and a structure for folding or rolling a container according to the present invention. FIG.
FIG. 9 is a view showing a structure for combining a handle formed on one side of a lid and a structure for folding or rolling a container according to the present invention. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the thicknesses of layers and regions are exaggerated for clarity.

The terms first, second, etc. may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may be referred to as a first component.

Terms such as top, bottom, top, bottom, or top, bottom, etc. are used to distinguish relative positions in components. For example, in the case of naming the upper side of the drawing as upper / upper side and the lower side of the drawing as lower / lower side for the sake of convenience, the upper part may be named as the lower part without departing from the right scope of the present invention, Can be named.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be construed as ideal or overly formal in meaning unless explicitly defined in the present application Do not.

The term used in the present invention, the check valve, is an example of the internal pressure regulating means, and even if it is used as another apparatus, it corresponds to the technical idea of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a steam-sealed container according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a water vapor-tight container according to the present invention, FIGS. 2 and 3 are exploded perspective views of a water vapor-tight container according to the present invention, FIG. 3 is a plan view of a water vapor- FIG. 6 is a view showing a state where an elastic ring is installed as an example in the steam-sealed container according to the present invention, and FIG. 7 is a cross-sectional view of a steam- And the container is folded into a scroll form.

1 to 7, a water vapor-tight container 10 according to the present invention may include a container body 100, a container lid 200, and a check valve 300.

A space may be formed in the container body 100 to accommodate foods cooked by side walls protruding upward along the rims of the bottom surface and the bottom surface, or a material for cooking food or the like.

The container body 100 includes a first extension portion 110 formed in a flange shape and extending horizontally outwardly along an edge of the side wall and a second extension portion 110 folded downward from the end of the first extension portion 110 A locking protrusion 120 for fixing the container lid 200 can be formed.

In the above description, the primary extension is preferably horizontally outward along the rim, but it may be formed in other shapes, for example, inclined or slightly depressed. It is important to note that all shapes that form the receiving space that can gather water vapor correspond to the technical idea of the present invention.

On the other hand, the container body 100 and / or the container lid 200 can be injection molded with a silicone material as an example so that the container body 100 can be freely flexed flexibly and folded or rolled into a rolled shape.

The shape of the container may be various shapes such as square, triangular, rhombus, and the first extension or the like in the horizontal direction may be extended to a different shape depending on the shape of the container as described above. It is a technical idea.

The container lid 200 may be provided to close the inside of the container body 100 by covering an upper portion of the container body 100 formed by opening the upper part. The container lid 200 includes a ring 250 that includes a seal 210, a second extension 220, a fastener 230, a handle 240, an exhaust hole 260, and an elastic ring, .

In addition, the structure extending from the rim of the container lid 200 is configured such that an intermediate portion facing the horizontally extending portion 115 of the first extended portion 110 of the container body 100 is bent upward A receiving portion 221 is formed so as to accommodate water vapor generated in the container body, and the upper surface (extension starting position) 117 of the first extending portion and the upper surface And a portion corresponding to a secondary extension of the second extension which is in close contact with the vertical side portion corresponding to the secondary extension of the first extension.

The receiving portion includes a horizontal portion 115 which is an intermediate portion of the first extending portion formed in the container body and a second extending portion formed on the container lid formed in a predetermined shape on the upper side facing the horizontal portion 115 And a vertical side portion corresponding to a secondary extension of the first extension and a second extension formed on the container lid and other structures formed on the container lid, A receiving space is formed. That is, the accommodation space may have various shapes, and each shape corresponds to the technical idea of the present invention.

The sealing part 210 is for sealing the inner space of the container body 100 and is positioned at a certain distance inward from the rim of the container lid 200. However, And may be formed along the inner side surface of the side wall of the container body 100 by projecting downward in a predetermined length. That is, when the container lid 200 is coupled to the container body 100, the sealing portion 210 is brought into close contact with the inner side surface of the side wall of the container body 100 so that the inside of the container body 100 can be sealed .

In addition, the sealing portion of the flexible material is further brought into close contact with the inner side surface of the side wall of the main body so that the steam pressure generated in the inside of the main body can not escape to the side surface of the main body.

The second extension part 220 may be formed in a flange shape extending from the rim of the container lid 200 and may be provided to support the fastening part 230 in close contact with the upper surface of the first extension part 110 .

In addition, the second extending portion 220 may be formed with a receiving portion 221 formed by bending an intermediate portion upward.

The receiving portion 221 may be formed on the semi-circular shape of the second extending portion 220 above the first extending portion 110.

In addition, when the second extending portion 220, which is bent in various shapes including a semi-circular shape and a rim portion that is the first extending portion 110, is coupled with the receiving portion 221, to be.

The receiving portion may have various shapes such as a square shape, a triangular shape, and a rhombus shape. In particular, the shape of the receiving portion may include at least 45 degrees rather than a gentle semi-circular shape in which water vapor collects at an end point and pulls the lid upward. An ideal angle or more is preferable. The shape of the receiving portion is one example, and the receiving portion may be formed in various shapes such as a wide area. However, it is important that the water vapor pressure accumulated in the receiving portion pulls the lid upward, and the portion of the lid 230 is more tightly engaged / closely contacted with the latching portion 120, The effect that the effect of the present invention is exhibited is preferable. Thus, the semicircular shape is also the shape of only one embodiment that satisfies the above condition.

When the inside of the container body 100 is expanded by the pressure of gas or water vapor generated in the container body 100 by the food or the food, And water vapor may be discharged to the outside, which is formed to accommodate such water vapor.

For example, when the pressure of water vapor reaches a maximum at a certain point (upper vertex or the like) in the shape of the predetermined accommodating portion 221, the fastening portion 230 provided on the container lid 200 is further inserted into the fastening protrusion 120 The container lid 200 is further tightly and tightly connected to the container body 100 due to the operation of the engaging portion and the latching jaw, 100) water vapor can not escape to the outside.

The fastening portion 230 is formed at a lower portion of the second extension portion 220 and fastened and fixed so as to enclose the fastening protrusion 120 formed on the container body 100. The inner space of the container body 100 is sealed with a secondary seal As shown in FIG.

For example, when the container body 100 and the container lid 200 are inflated by the pressure of water vapor generated in the container body 100, the container body 100 is pressurized in the downward direction, The holding jaw 120 provided on the container body 100 is pressed downward to press the sealing part 210 and the container lid 200 is pressed against the container lid 200. As a result, So that the fastened portion 230 is further tightly sealed with the fastening protrusion 120 by applying pressure in the upward direction.

As described above, when the steam collected in the receiving portion is lifted up to the upper side, the fastening portion 230 and the latching jaw 120 are further stiffened To prevent water vapor leakage.

In addition, the fastening part 230 may be formed in the form of a hook bent in the inward direction to be used for opening and closing the container lid 200.

For example, when the container lid 200 is fastened to the container body 100, when the user pulls the handle 240 and pulls it up, the fastening part 230 is naturally released from the latching jaw 120, To be separated from the container body 100.

The handle 240 is formed by extending a predetermined length from one side of the container lid 200 and may be provided to allow the user to easily and open the container lid 200.

In addition, the handle 240 may have a fitting groove 241 formed at an outer middle portion in the longitudinal direction so that the container lid 200 can be fixed to the check valve 300 in a state where the container lid 200 is folded or rolled up.

For example, as shown in FIG. 7, the container lid 200 is fixed to the fitting portion 310 formed on the check valve 300 by inserting the fitting groove 241 in a state of being rolled up from the opposite side where the handle 240 is formed .

In the embodiment of the present invention, the container may be folded and the fitting groove 310 formed in the check valve 300 may be fitted with the fitting groove 241.

As described above, when the fitting groove 241 is formed in the handle 240 and is used in the check valve 300, the volume of the sealed container 10 made of silicon is minimized In particular, there is an advantage that the container body 100 and the container lid 200 can be folded or rolled in a rolled state even when they are combined.

The loop including the elastic ring 250 is formed at one end of the container lid 200 and is formed in a band shape having an elasticity and is preferably provided for fixing the closed container 10 which is folded or rolled into a rolled shape .

For example, the used sealed container 10 may be folded or rolled up from the opposite side provided with the ring 250 in FIG. 6 to form a fitting groove 241 formed in the handle 240, And then the elastic ring 250 is secondarily fixed by inserting the elastic ring 250 from the outside to the inside. That is, by the elastic force of the elastic ring 250, the hermetically sealed container 10, which is folded or rolled into a rolled shape, is pressed so as not to be released by an external impact.

The discharge hole 260 may be formed at a predetermined position of the container lid 200, as an example, at the center, and may be formed to discharge water vapor or gas generated inside the container lid 200 to the outside. The discharge hole may be formed at a position other than the center.

The check valve 300 may be fitted to the discharge hole 260 and may be provided to open or close the steam or gas generated in the closed vessel 10 at a predetermined steam pressure.

The check valve 300 includes an engaging portion 310 fitted to the discharge hole 260 and a discharge hole 260 formed in the upper portion of the engaging portion 310 and in close contact with the upper surface of the discharge hole 260, And a fitting protrusion 330 formed on the opening and closing plate 320 and adapted to fit into a fitting groove 241 formed in the handle 240.

The engaging portions 310 may be formed at the lower end of the opening and closing plate 320 and may be formed to be spaced a predetermined distance in the circumferential direction.

The coupling part 310 is formed at the lower end of the supporting part 311 and moves to the upper part or the lower part of the discharging hole 260. When the supporting part 311 is moved upward, (312) which is in close contact with the bottom surface of the support base (260) and restricts the movement of the support base (311).

The space portion 313 is formed between the coupling portion 310 and the other coupling portion 310 so that elasticity is generated in the coupling portion 310. When the check valve 300 is moved upward A certain amount of water vapor or gas generated inside the sealed container 10 is discharged to the outside through the space portion 313. [

The opening and closing plate 320 may be provided on the discharge hole 260 formed in the container lid 200 and may be provided to seal or open the discharge hole 260 by movement of the check valve 300.

For example, when the check valve 300 is moved in the upward direction, the opening / closing plate 320 is separated from the discharge hole 260, so that the space 313 formed in the coupling portion 310 is exposed to the outside. And the steam or gas generated in the closed vessel 10 through the space 313 exposed to the outside is discharged to the outside.

The fitting protrusion 330 is formed to be spaced apart from the upper surface of the opening and closing plate 320 and has a groove formed between the opening and closing plate 320 and the fitting protrusion 330. The fitting protrusion 330 is formed inside the fitting groove 241 formed in the handle 240 So that the surface is fitted and fixed.

When the check valve 300 is installed at the center of the container lid 200, if the pressure exceeds a certain level due to the steam generated in the sealed container 10, the sealed container 10 may explode. In order to prevent explosion, a check valve 300 is installed in the present invention.

That is, if a certain pressure or more is generated inside the sealed container 10, the inside of the sealed container 10 expands and the check valve 300 moves upward. The water vapor inside the container 10 is discharged to the outside.

FIG. 8 is a view showing another embodiment of the present invention, which shows a structure for both the handle and the container formed on one side of the lid and for folding or rolling the container.

FIG. 9 is a view showing another embodiment of the present invention, showing a structure for holding a handle together with a cover formed on one side of a lid and holding the container by folding or rolling.

As shown in the drawing, the same shape as the fitting groove 241 of FIG. 1 can be formed in various shapes.

FIG. 7 shows that a fitting groove is formed in a shape of a ladder extending from one side and a rounded shape is formed at the end. FIG. 8 shows that three semi-circular shapes are formed on one side for stability and rigidity, Shaped contact horns which are in contact with the other left and right semicircles through the extended support lines.

As described above, the present invention relates to a hermetically sealed container such as a water vapor, and more particularly, to a hermetically sealed container such as a water vapor which is generated in the container body, The container lid and the container are more tightly coupled by the pressure of the container.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that one embodiment described above is illustrative in all aspects and not restrictive.

10; Food container 100; The container body
110; A first extension 120; Jaw
200; Container lid 210; Sealing
220; A second extension 221; Receiving portion
230; Fastening portion 240; handle
241; A fitting groove 250; Elastic ring
260; Exhaust hole 300; Check valve
310; A coupling portion 311; support fixture
312; Tight contact portion 313; Space portion
320; An opening / closing plate 330; Insert projection

Claims (8)

A container body having a first extension formed to extend outward along a rim of the side wall, and a locking protrusion bent downward from an end of the first extension; And
And a container lid which covers an upper portion of the container main body and seals the inside of the container main body,
In the container lid,
And a receiving portion formed on the upper surface of the first extending portion so as to receive the steam generated and generated inside the container body, A second extension portion which is brought into close contact with the side surface; And
And a fastening portion formed at a lower portion of the second extension portion and fastened and fixed so as to surround the fastening protrusion formed on the container body,
The accommodating portion includes a horizontal portion which is an intermediate portion of the first extending portion and a space formed by the second extending portion which is formed in a predetermined shape on the upper side facing the horizontal portion and a space formed by the upper surface of the first extending portion and the first extending portion And a receiving space is formed by the contact of the vertical side portion of the portion with the second extending portion extending from the lid.
A container body having a first extension formed to extend outward along a rim of the side wall, and a locking protrusion bent downward from an end of the first extension;
A container lid which covers an upper portion of the container body and seals the inside of the container body; And
And a check valve which is fitted in the discharge hole formed in the container lid and opens and closes the discharge hole,
The container lid,
A portion of the first extension extending from an edge of the container lid and facing a horizontal portion of the first extension portion is bent upward to include a semi-circular shape, A second extension part formed to be in close contact with a top surface and a side surface of the first extension part; And
And a fastening portion formed at a lower portion of the second extending portion and fastened and fixed to enclose a fastening protrusion formed on the container body and sealing the internal space of the container body,
The accommodating portion includes a horizontal portion which is an intermediate portion of the first extending portion and a space formed by the second extending portion which is formed in a predetermined shape on the upper side facing the horizontal portion and a space formed by the upper surface of the first extending portion and the first extending portion And a receiving space is formed by the contact of the vertical side portion of the portion with the second extending portion extending from the lid.
A container body having a first extension formed to extend outward along a rim of the side wall, and a locking protrusion bent downward from an end of the first extension;
A container lid which covers an upper portion of the container body and seals the inside of the container body; And
And a check valve which is fitted in the discharge hole formed in the container lid and opens and closes the discharge hole,
The container lid,
A portion extending from a rim of the container lid and facing a horizontal portion of the first extending portion is formed in an upwardly curved shape so that a receiving portion is formed so that water vapor generated in the container body can be received, A second extension portion that is in close contact with an upper end surface and a side surface of the first extension portion;
A fastening portion formed at a lower portion of the second extension portion and fastened and fixed to enclose a fastening protrusion formed on the container body and sealing the internal space of the container body; And
And a handle formed by extending a predetermined length from one side of the container lid and having a fitting groove formed on an outer side thereof,
Wherein the fitting groove is engaged with a fitting projection formed on the check valve so that the container lid is folded or curled.
A container body having a first extension formed to extend outward along a rim of the side wall, and a locking protrusion bent downward from an end of the first extension;
A container lid which covers an upper portion of the container body and seals the inside of the container body; And
And a check valve which is fitted in the discharge hole formed in the container lid and opens and closes the discharge hole,
The container lid,
A portion extending from a rim of the container lid and facing a horizontal portion of the first extending portion is bent upward so as to include a semi-circular shape so that water vapor generated in the container body can be received A second extension part formed to be in close contact with a top surface and a side surface of the first extension part;
A fastening portion formed at a lower portion of the second extension portion and fastening and fixing the fastening protrusion formed on the container body so as to surround the fastening protrusion; And
And a ring formed at one side of the container lid (200) for fixing the folded or rolled container lid.
The water pump according to any one of claims 1 to 4, wherein the receiving portion is formed such that a portion of the receiving portion facing the horizontal portion of the first extending portion is bent upward and collects water vapor pressure including a semi-circular shape Features a water vapor-tight container.
The method according to any one of claims 1 to 4,
Further comprising a sealing part located at a predetermined distance inward from a rim of the container lid and being closely attached to the inner side surface of the side wall of the container body to seal the inside of the container body. The container according to claim 3 or 4, wherein the accommodating portion includes: a horizontal portion that is an intermediate portion of the first extending portion; a space formed by the second extending portion that is formed in a predetermined shape on the upper side facing the horizontal portion; Wherein the upper end surface of the first extension portion and the vertical side surface portion of the first extension portion are formed to be in contact with the second extension portion extending from the lid.
The method according to any one of claims 2 to 4,
The check valve 300 is fitted to the discharge hole 260 and is provided to open or close the steam or gas generated in the closed vessel 10 under a predetermined steam pressure condition,
The check valve 300 includes an engaging part 310 fitted to the discharge hole 260 and a discharge hole 260 formed in the upper part of the engaging part 310 and closely attached to the upper surface of the discharge hole 260, And a fitting protrusion 330 formed on the opening and closing plate 320 and fitted to the fitting groove 241 formed in the handle 240,
The coupling part 310 is formed at the lower end of the opening and closing plate 320. The coupling part 310 is inserted into the discharge hole 260 and is moved upward or downward. And a tight fitting portion 312 which is formed on the upper surface of the support frame 311 and is in close contact with the bottom surface of the vent hole 260 when the support frame 311 is moved upward,
The space portion 313 is formed between the coupling portion 310 and the adjacent coupling portion 310 so that elasticity is generated in the coupling portion 310. When the check valve 300 is moved upward A certain amount of water vapor or gas generated in the closed vessel 10 is discharged to the outside through the space 313,
The opening and closing plate 320 is located on the discharge hole 260 formed in the container lid 200 and is configured to close or open the discharge hole 260 by movement of the check valve 300,
The fitting protrusion 330 is formed to be spaced apart from the upper surface of the opening and closing plate 320 and has a groove formed between the opening and closing plate 320 and the fitting protrusion 330. The fitting protrusion 330 is formed inside the fitting groove 241 formed in the handle 240 So that the surface is fitted and fixed.

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