JP7365041B2 - gel packing system - Google Patents

Description

The present invention relates to gel packing systems.

Traditionally, packing has been made of a variety of materials such as flexible urethane rubber and silicone rubber to prevent liquid and gas leaks, but it is also possible to seal using the weight of the lid by sandwiching it with a gasket and tightening it with bolts or screws. Even if you close gas and liquid leaks or use double packing to tighten bolts, screws may come loose due to poor tightening, long-term slight movement, and the volume of the sealed gas, distortion of the lid and main body, or deterioration of the packing over time. The airtightness was compromised.

For example, the main types of display cases currently used around the world are those that slide sideways, those with double doors, and those that can be covered from above, but all of them have gaps between the door and the main body, allowing air polluting gases to escape. Initially, it was not possible to prevent the invasion of mold, bacteria, pests, etc.

Currently, storage methods using inert gas include sealing in a film with low oxygen permeability to remove oxygen, which is a cause of deterioration, and preventing oxygen from entering, and depressurizing the cylinder with nitrogen gas, argon gas, etc. Two methods are known: one method is to gradually release nitrogen gas into the atmosphere using a nitrogen gas generator, and the other is to constantly release nitrogen gas into the atmosphere using a nitrogen gas generator.

Even with the Air Tight type, which is currently considered to have a good sealing rate, the air exchange rate is 0.1 to 0.3 times/day, so as much as possible, atmospheric pollutants, mold pests, etc. are prevented from entering the display case and storage. Currently, even air-tight display cases, which are designed to prevent air exchange inside the case, have gaps, making it difficult to prevent the inflow of contaminated gases, bacteria, pests, etc. Furthermore, it is difficult to control humidity indoors in places where temperature and humidity cannot be controlled.

Therefore, in the first tank on the air supply side, the other end of the outside air tube into which outside air flows from one end is arranged in the air supply side liquid part, and the applicant proposes an air supply side through which the gas flowing toward the inside of the case passes. One end of the insertion tube is disposed within the gas supply section, and the other end of the exhaust tube into which gas exhausted from the inside of the case flows in from one end of the first tank on the exhaust side is placed within the liquid section on the exhaust side. A liquid seal system has been proposed in which one end of an exhaust-side insertion tube through which gas directed to the outside is inserted is located within an exhaust-side gas portion (see Patent Document 1).

According to the invention described in Patent Document 1, by circulating the gas sealed in the case using the differential pressure caused by the atmospheric pressure and temperature difference inside and outside the case, the differential pressure prevents atmospheric air from flowing into the case and It is possible to prevent the gas inside from flowing out, and it is possible to solve problems such as the inflow of contaminated gas, bacteria, pests, etc.

Japanese Patent Application Publication No. 2018-138462

By the way, in a case where it is necessary to store an object inside, it is necessary to provide a highly airtight packing in the openable/closable portion.
However, for example, when storing a small case with a volume of around 3L, gas expansion caused by sudden changes in atmospheric pressure or temperature is dangerous, so there was no packing that could flexibly handle low pressure without mechanical operation.

In addition, preservation of stored items such as important cultural properties and academic materials takes place over a period of 30 to 60 years, as exposure to the atmosphere causes significant damage over time, and it is necessary to preserve them for a long period of time to prevent them from coming into contact with the atmosphere. There was no packing that would keep the inside of the case airtight and not have a negative impact on the items stored inside the case.

An object of the present invention is to provide a gel packing system that can cope with the expansion of gas within the case, maintains airtightness over a long period of time, and does not adversely affect the objects contained within the case.

(1) A base having a placement surface on which an object is placed;
a cover disposed on the base, covering the placement surface and forming an airtight space between the cover and the base;
The cover has a gas shielding plate that is a plate-shaped body that protrudes downward along the periphery of the airtight space at a lower end side connected to the base,
The base has a connection part in which gel is stored along the periphery of the airtight space,
In a state where the cover is placed on the base, the lower end side of the gas shielding plate of the cover is inserted into the gel of the connection part of the base to form the airtight space ,
When the air pressure inside the cover rises higher than the air pressure outside the cover, the cover lifts up and a gap is created between the lower end of the gas shielding plate and the gel at the connection part, and the gas inside the cover flows through this gap. Gel packing system that allows water to flow out to the outside .

According to the invention (1), the gel packing system includes a base and a cover.
The base has a placement surface on which an object is placed.
The cover is placed on the base, covers the mounting surface, and forms an airtight space between the cover and the base.
The cover has a gas shielding plate that is a plate-shaped body that projects downward along the periphery of the airtight space at the lower end side that connects to the base.
The base has a connecting portion in which gel is stored along the periphery of the airtight space.
Then, in a state where the cover is placed on the base, the lower end side of the gas shielding plate of the cover is inserted into the gel of the connection part of the base, thereby forming an airtight space.

As a result, when the cover is placed on the base (an airtight space is formed inside the cover), if the gas inside the cover expands and the air pressure inside the cover rises above the air pressure outside the cover, When the cover is lifted, a gap is created between the lower end of the gas shielding plate of the cover and the gel at the connection part of the base, and the gas inside the cover flows out through this gap. Then, when the air pressure inside the cover becomes similar to the air pressure outside the cover, the cover is lowered, and the lower end side of the gas shielding plate of the cover is inserted into the gel of the connection part of the base, forming an airtight space again.

Therefore, it is possible to smoothly cope with the expansion of gas inside the cover, and it is possible to prevent gas outside the cover from flowing into the inside of the cover.
Therefore, it is possible to provide a gel packing system that can cope with the expansion of gas within the case, maintains airtightness over a long period of time, and does not adversely affect the objects contained within the case.

(2) a gel storage section that stores gel;
further comprising a gas valve having a gas discharge port disposed within the gel of the gel reservoir,
The gel packing system according to (1), wherein the gas that has passed through the gel inside the gel storage section is supplied to the airtight space.

According to the invention (2), the gel packing system further includes a gas valve.
The gas valve includes a gel reservoir and a valve.
The gel storage section stores gel.
The gas valve has a gas discharge port disposed within the gel of the gel reservoir.
Then, inside the gel storage section, the gas that has passed through the gel is supplied to an airtight space formed inside the cover while the cover is placed on the base.

By arranging the outlet of the gas valve within the gel in this way, it is possible to prevent the outlet of the gas valve from deteriorating. Further, by adjusting the amount of gel stored in the gel storage section and changing the height from the outlet of the valve to the surface of the gel, it is possible to adjust the air pressure inside the cover.

According to the present invention, it is possible to provide a gel packing system that can cope with the expansion of gas within the case, maintains airtightness over a long period of time, and does not have a negative effect on the objects contained within the case.

1 is a diagram illustrating an overview of a gel packing system 1 according to an embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view of the connecting portion between the base 10 and the cover 20 in a stable state of the gel packing system 1 according to the embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view of the connecting portion between the base 10 and the cover 20 in a state where the gas inside the gel packing system 1 according to the embodiment of the present invention is expanded. It is a figure explaining gas valve 30 of gel packing system 1 concerning an embodiment of the present invention.

Embodiments of the present invention will be described below, but the present invention is not limited thereto. In addition, in the following description of the embodiment, the same constituent elements are given the same reference numerals, and the description thereof will be omitted or simplified.

First, the configuration of the gel packing system 1 according to the embodiment will be explained with reference to the drawings.
FIG. 1 is a diagram illustrating an overview of a gel packing system 1 according to an embodiment of the present invention. FIG. 1 is a front view of the gel packing system 1. FIG.

The gel packing system 1 according to the present embodiment is a so-called display case, which can accommodate the expansion of gas inside, maintains airtightness for a long period of time, and is capable of handling cultural property, which is the object A, housed inside. To preserve exhibits while preventing them from deteriorating due to oxidation and humidity without adversely affecting exhibits such as exhibits.
The gel packing system 1 includes a base 10, a cover 20, and a gas valve 30.

The base 10 has a placement surface 10a on which the stored object A is placed, and is formed, for example, in a box shape, has the placement surface 10a formed on the top surface, and has a gas valve 30 inside and a gas A gas cylinder 300 or the like that supplies gas may be accommodated.

The cover 20 is made of a transparent member such as transparent glass or an acrylic plate and is formed into a hollow box shape with an open bottom surface, and is placed on the base 10 to cover the mounting surface 10a and have a space between it and the base 10. , forming an airtight space B. The object A is accommodated in this airtight space B.

Next, the connecting portion between the base 10 and the cover 20 will be explained.
FIG. 2 is an enlarged sectional view of the connecting portion between the base 10 and the cover 20 in a stable state of the gel packing system 1 according to the embodiment of the present invention.
The base 10 has a connecting portion 11 in which gel G is stored along the periphery of the airtight space B on the mounting surface 10a.
The connecting portion 11 extends in a substantially opening shape so as to surround the airtight space B, and has a substantially U-shaped cross section when viewed from the top. The connecting portion 11 has gel G stored therein.
Further, a buffer portion 111 is provided at the upper end of the connection portion 11 that the cover 20 comes into contact with. The buffer portion 111 is formed of an elastic member (eg, a spring, a rubber member, etc.) that can be elastically deformed. By providing such a buffer portion 111, it is possible to reduce the impact when the cover 20 comes into contact with the base 10. Further, when the internal pressure of the airtight space B becomes lower than the external pressure, a force is exerted on the cover 20 that presses it against the base 10 side. In such a case, the buffer part 111 flexibly sinks and It is possible to reduce the applied force and prevent the cover 20 from being damaged.

Although any gel G can be used, it is preferable to use a fluorine gel. Fluorine gel has a lower oxygen permeability than silicone gel, and the amount of fluorine gel used can be reduced to 1/30 of that of silicone gel.

The cover 20 includes a box-shaped transparent member 21, a mounting portion 22 that extends approximately in the shape of an opening to surround the airtight space B when viewed from above, and is attached to the lower end of the transparent member 21, and a mounting portion 22 that extends around the airtight space B. The gas shielding plate 23 is a plate-shaped body extending along the mounting portion 22 and protruding downward from the lower end of the mounting portion 22, and includes a gas shielding plate 23 formed in a substantially mouth shape so as to surround the airtight space B when viewed from the top.

The base 10 and the cover 20 in the gel packing system 1 are such that when the cover 20 is placed on the base 10, the lower end side of the gas shielding plate 23 of the cover 20 is inside the gel G of the connection part 11 of the base 10. By being inserted into the airtight space B, an airtight space B is formed.

FIG. 3 is an enlarged sectional view of the connecting portion between the base 10 and the cover 20 in a state where the gas inside the gel packing system 1 according to the embodiment of the present invention is expanded.
When the cover 20 is placed on the base 10 (the stable state shown in FIG. 2 in which the airtight space B is formed inside the cover 20), the gas inside the cover 20 expands, and the air pressure inside the cover 20 increases. 20, when the air pressure rises above the external pressure, the cover 20 lifts up as shown in FIG. Gas inside the cover 20 flows out from the gap.
Thereafter, when the gas inside the cover 20 flows out and the air pressure inside the cover 20 becomes the same as the air pressure outside the cover 20, the cover 20 is lowered and the lower end side of the gas shielding plate 23 of the cover 20 is connected to the base 10. It is inserted into the gel G of the portion 11, returns to the state shown in FIG. 2, and forms the airtight space B again.

FIG. 4 is a diagram illustrating the gas valve 30 of the gel packing system 1 according to the embodiment of the present invention.
The gas valve 30 includes a gel storage section 31 and a valve 32.

The gel storage section 31 is formed into a container shape that stores gel G. In the example shown in FIG. 4, the gel storage section 31 is formed in the shape of a container with an open top, but if it can store the gel G and release the gas g that has passed through the gel G into the airtight space B, for example, It can be of any shape, such as a bottle shape.

For example, the valve 32 is supplied with gas g (for example, nitrogen gas, etc.) from a gas cylinder 300 (see FIG. 1), and a discharge port 32a for discharging the supplied gas g is disposed within the gel G of the gel storage section 31. ing.

In the gel packing system 1, the gas g that has passed through the gel G inside the gel storage section 31 is supplied to the airtight space B formed inside the cover 20 while the cover 20 is placed on the base 10. .

By supplying gas g to the airtight space B using such a gas valve 30, the gas g rises while spreading the gel G, and the gas g is released into the airtight space B. Thereby, it is possible to adjust the air pressure inside the cover 20 by adjusting the amount of gel G stored in the gel storage part 31 and changing the height from the outlet 32a of the valve 32 to the surface Ga of the gel. becomes. For example, in experiments, when the height from the outlet 32a of the valve 32 to the surface Ga of the gel was approximately 1 centimeter, the air pressure inside the cover 20 was approximately 1 kilopascal.

Note that the present invention is not limited to the above-described embodiments, and any modifications, improvements, etc. that can achieve the purpose of the present invention are included in the present invention.

1 Gel packing system 10 Base 10a Placement surface 11 Connection part 20 Cover 21 Transparent member 22 Mounting part 23 Gas shielding plate 30 Gas valve 31 Gel storage part 32 Valve 32a Discharge port 111 Buffer part 300 Gas cylinder A Contained object B Airtight space G Gel Ga surface g gas

Claims (2)

a base having a placement surface on which an object is placed;
a cover disposed on the base, covering the placement surface and forming an airtight space between the cover and the base;
The cover has a gas shielding plate that is a plate-shaped body that protrudes downward along the periphery of the airtight space at a lower end side connected to the base,
The base has a connection part in which gel is stored along the periphery of the airtight space,
In a state where the cover is placed on the base, the lower end side of the gas shielding plate of the cover is inserted into the gel of the connection part of the base to form the airtight space ,
When the air pressure inside the cover rises higher than the air pressure outside the cover, the cover lifts up and a gap is created between the lower end of the gas shielding plate and the gel at the connection part, and the gas inside the cover flows through this gap. Gel packing system that allows water to flow out to the outside . a gel storage section that stores gel;
further comprising a gas valve having a gas discharge port disposed within the gel of the gel reservoir,
The gel packing system according to claim 1, wherein the gas that has passed through the gel inside the gel storage section is supplied to the airtight space.