Storage System

Abstract

To provide a preservation system capable of adjusting a change of pressure of sealed inside by a change of pressure or a change of temperature.SOLUTION: A preservation system 1 comprises: a case 2 formed with sealed space inside; a supply air part 10 provided at a side supplying gas to inside of the case 2; and an exhaust part 20 returning the gas discharged from inside of the case 2 to the supply air part 10. The exhaust part 20 has a pressure adjustment part 22 adjusting inner pressure at the exhaust part 20. The pressure adjustment part 22 operates according to a difference between outer pressure which is air pressure outside and the inner pressure to reduce the difference between the inner pressure and the outer pressure.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a storage system. [Background technology]

[0002] Traditionally, cultural properties and other objects to be preserved have been preserved by placing an oxygen absorber and the object in an oxygen barrier bag, or by injecting nitrogen gas generated by a nitrogen gas generator into a case containing the object.

[0003] In addition, currently, most storage cases that use nitrogen gas generators are airtight, meaning that the pressure difference between the inside and outside of the storage case is not taken into consideration, and are not completely sealed. As a result, the air exchange rate is around 10%, and contaminated outside air is constantly flowing into the storage case due to the pressure difference between the inside and outside of the storage case.

[0004] Currently, in such airtight storage cases, an inert gas such as nitrogen gas is constantly pumped into the storage case using a nitrogen gas generator or gas cylinder to maintain a positive pressure state and prevent the inflow of oxygen.

[0005] Furthermore, nitrogen gas generators that require a power source have difficulty maintaining the oxygen concentration in the storage case in the event of a long-term power outage due to a disaster or the like.

[0006] For this reason, the inventor proposed a liquid seal system comprising a case having an airtight space formed therein, an air intake side liquid seal section provided on the side for supplying gas into the inside of the case, and an exhaust side liquid seal section provided on the side for exhausting gas from inside the case, the air intake side liquid seal section having an air intake side tank in which liquid is stored and in which an air intake side liquid portion and an air intake side gas portion are formed, the air intake side tank having one end of an outside air pipe into which outside air flows in, the other end of which is arranged within the air intake side liquid portion, and one end of an air intake side insertion pipe through which gas flowing toward the inside of the case is inserted, the exhaust side liquid seal section having an exhaust side tank in which liquid is stored and in which an exhaust side liquid portion and an exhaust side gas portion are formed, the exhaust side tank having one end of an exhaust pipe into which gas exhausted from the inside of the case flows in, the other end of which is arranged within the exhaust side liquid portion, and one end of an exhaust side insertion pipe through which gas flowing to the outside is inserted, the exhaust side gas portion (see Patent Document 1). With this type of liquid-sealed system, it is possible to circulate the gas sealed inside the case by using the pressure difference caused by the air pressure and temperature difference between the inside and outside of the case, without using a power source or a high-pressure cylinder. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2018-138462 A Summary of the Invention [Problem to be solved by the invention]

[0008] In order to make the inside of a case housing an object oxygen-free, a storage system including the case may employ a cylinder system in which the entire system is sealed and gas is supplied from a cylinder. In such cylinder-type storage systems, it is necessary to adjust for pressure changes inside the sealed container due to changes in air pressure and temperature.

[0009] An object of the present invention is to provide a storage system capable of adjusting changes in pressure inside a sealed container due to changes in air pressure or temperature. [Means for solving the problem]

[0010] (1) A case having an airtight space formed therein; an air supply unit provided on a side that supplies gas to the inside of the case; an exhaust section that returns gas exhausted from inside the case to the air supply section, the exhaust section has a pressure adjusting section that adjusts an internal pressure in the exhaust section, The pressure adjusting unit operates in response to the difference between the internal pressure and the external air pressure, thereby reducing the difference between the internal pressure and the external pressure.

[0011] (1) A case having an airtight space formed therein; an air supply unit provided on a side that supplies gas to the inside of the case; an exhaust section that returns gas exhausted from inside the case to the air supply section, the exhaust section has a pressure adjusting section that adjusts an internal pressure in the exhaust section, The pressure adjusting unit operates in response to a difference between an external pressure, which is an external atmospheric pressure, and the internal pressure. Reduce, Save system. The pressure adjusting unit is A first storage section having a first intake and exhaust section and storing gas therein; A second storage section having a second intake and exhaust section, disposed inside the first storage section, and storing gas therein, The first intake and exhaust unit is connected to either the exhaust unit side or the outside atmosphere side, The second intake and exhaust unit is connected to either the exhaust unit side or the outside atmosphere side, The second storage portion has an internal space whose size varies depending on the difference between the air pressure inside the first storage portion and the air pressure inside the second storage portion. Save system.

[0012] As a result, if the internal pressure of the storage system changes due to a change in air pressure or temperature, the pressure regulating section of the exhaust section operates according to the difference between the internal pressure and the external pressure, which is the external air pressure, and reduces the difference between the internal pressure and the external pressure. Therefore, it is possible to provide a storage system that can adjust the pressure change inside the sealed container due to the change in air pressure or temperature.

[0013] (2) The pressure adjusting section is A first storage section having a first intake and exhaust section and storing gas therein; A second storage section having a second intake and exhaust section, disposed inside the first storage section, and storing gas therein, The first intake and exhaust unit is connected to either the exhaust unit side or the outside atmosphere side, The second intake and exhaust unit is connected to either the exhaust unit side or the outside atmosphere side, The storage system according to (1), wherein the size of the internal space of the second storage section changes depending on the difference in air pressure between the first storage section and the second storage section.

[0014] According to the invention (2), the pressure adjustment section has a first storage section and a second storage section. The device has a first storage section and a first intake and exhaust section, and stores gas therein. The gas supply device has a second storage section and a second intake and exhaust section, is disposed inside the first storage section, and stores gas therein. The first intake / exhaust section is connected to either the exhaust section side or the outside atmosphere side. The second intake / exhaust section is connected to the other of the exhaust section side or the outside atmosphere side. The size of the internal space of the second storage portion varies depending on the difference between the air pressure inside the first storage portion and the air pressure inside the second storage portion.

[0015] As a result, the first storage section has a space communicating with the first intake and exhaust section, and a space communicating with the second intake and exhaust section and defined by the second storage section. The size of the space defined by the second storage section varies depending on the difference between the air pressure inside the first storage section and the air pressure inside the second storage section. Therefore, when the air pressure inside the first storage section is higher than the air pressure inside the second storage section, the space defined by the second storage section becomes smaller, whereas when the air pressure inside the first storage section is lower than the air pressure inside the second storage section, the space defined by the second storage section becomes larger. In other words, when the air pressure inside the first storage portion is higher than the air pressure inside the second storage portion, the space in the first storage portion that communicates with the first intake and exhaust portion becomes larger (the air pressure in that space decreases), whereas when the air pressure inside the first storage portion is lower than the air pressure inside the second storage portion, the space in the first storage portion that communicates with the first intake and exhaust portion becomes smaller (the air pressure in that space increases).

[0016] Therefore, if the internal pressure of the preservation system changes due to changes in air pressure or temperature, the second storage section operates due to the difference between the internal pressure and the external pressure, reducing the difference between the internal pressure and the external pressure, thereby providing a preservation system that can adjust pressure changes inside the sealed space due to changes in air pressure or temperature without using power.

[0017] (3) The pressure adjusting unit has a first pressure adjusting unit and a second pressure adjusting unit, The first pressure adjusting unit is The first intake and exhaust unit is connected to the exhaust unit side, The second intake and exhaust unit is connected to the outside atmosphere side, The second pressure adjusting section is The first intake and exhaust unit is connected to the outside atmosphere side, The storage system according to (2), wherein the second intake and exhaust section is connected to the exhaust section side.

[0018] According to the third aspect of the present invention, the pressure adjusting section includes a first pressure adjusting section and a second pressure adjusting section. The first pressure adjusting section is The first intake and exhaust unit is connected to the exhaust unit side, The second intake and exhaust section is connected to the outside atmosphere side. The second pressure adjusting section is The first intake and exhaust unit is connected to the outside atmosphere side, The second intake and exhaust unit is connected to the exhaust unit side.

[0019] As a result, when the internal pressure of the storage system becomes negative relative to the external pressure (atmospheric pressure), the second storage section of the first pressure adjustment section becomes larger, thereby reducing the difference between the internal pressure and the external pressure; on the other hand, when the internal pressure of the storage system becomes positive relative to the external pressure (atmospheric pressure), the second storage section of the second pressure adjustment section becomes larger, thereby reducing the difference between the internal pressure and the external pressure.

[0020] Therefore, depending on whether the internal pressure of the preservation system is negative or positive with respect to the outside, the difference between the internal pressure and the external pressure can be reduced by separate pressure adjusting parts, so that a preservation system can be provided which can more delicately adjust pressure changes in the sealed interior caused by changes in air pressure or temperature. Effect of the Invention

[0021] According to the present invention, a preservation system can be provided that is capable of adjusting changes in pressure inside a sealed space caused by changes in air pressure or temperature. [Brief description of the drawings]

[0022] [Figure 1] FIG. 1 is a diagram illustrating an overview of a storage system 1 according to an embodiment of the present invention. [Diagram 2] FIG. 4 is a diagram illustrating a configuration accommodated in a case base according to the embodiment. [Diagram 3] 3 is a diagram illustrating a schematic configuration of a first pressure adjusting section according to the embodiment. FIG. [Figure 4] 4 is a diagram illustrating a schematic configuration of a second pressure adjusting section according to the embodiment. FIG. [Diagram 5] FIG. 2 is a diagram showing a schematic configuration of a gel valve according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, an embodiment of the present invention will be described, but the present invention is not limited thereto. In addition, in the following description of the embodiment, the same components are denoted by the same reference numerals, and the description thereof will be omitted or simplified.

[0024] First, the configuration of a storage system 1 according to the embodiment will be described with reference to the drawings. Fig. 1 is a diagram for explaining an overview of a storage system 1 according to an embodiment of the present invention. Fig. 1 is a front view of the storage system 1.

[0025] The preservation system 1 according to this embodiment can perform insecticidal and insect-proofing treatment on preserved objects such as cultural properties without adversely affecting the exhibits, and preserves the exhibits while preventing deterioration due to oxidation and humidity. The storage system 1 includes a case 2 and a case stand 3 on which the case 2 is placed.

[0026] Case 2 is formed into a hollow box shape from transparent glass or acrylic plate, and an airtight space is formed inside by placing it on case stand 3. The object to be preserved is accommodated in this airtight space. By forming the case 2 from transparent glass or acrylic plate in this way, the preservation system 1 can be used as, for example, a display case installed in a museum, etc. However, the preservation system 1 is not limited to display cases and can be applied to any preservation case for preventing deterioration due to oxidation or humidity.

[0027] FIG. 2 is a diagram showing a schematic configuration housed in a case base according to the embodiment. The preservation system 1 is provided with an air supply section 10 inside the case stand 3, which is connected to the inside of the case 2 via a sensor 30 and is provided on the side that supplies gas to the inside of the case 2, and an exhaust section 20 which is connected to the inside of the case 2 via the sensor 30 and returns gas exhausted from the inside of the case 2 to the air supply section 10.

[0028] The air supply section 10 includes a cylinder 11, a buffer tank 12, and a valve 13. Gas is stored in the cylinder 11. In this embodiment, the gas is desirably a gas that has little effect on the substance, and examples of the gas that can be used include nitrogen gas, argon gas, and carbon dioxide gas.

[0029] The buffer tank 12 is connected to the cylinder 11 by a vent pipe via a regulator, and stores the gas circulating within the preservation system 1. The buffer tank 12 may have an oxygen adsorbent, a humidity control material, a pollutant adsorbent, etc. disposed therein. This makes it possible to remove oxygen, moisture, and pollutants contained in the gas that has flowed into the buffer tank 12.

[0030] The valve 13 is provided in a vent pipe extending from the buffer tank 12 to the case 2 , and adjusts the flow rate of gas supplied from the buffer tank 12 to the case 2 .

[0031] The air supply unit 10 may also include a ventilation device 14 depending on the position of the buffer tank 12 relative to the case 2. The ventilation device 14 is provided on a ventilation pipe extending from the buffer tank 12 to the case 2, and is composed of, for example, an air pump, a fan, or the like, and sends out the gas stored in the buffer tank 12 into the case 2.

[0032] Although not shown in the figures, the gas supply unit 10 may be provided with a display panel that displays the amount of gas being supplied from the buffer tank 12 to the case 2, the air pressure inside the preservation system 1, etc.

[0033] The exhaust section 20 includes an exhaust-side vent pipe 21 that communicates with the inside of the case 2 and extends to the buffer tank 12, a pressure adjusting section 22, and a gel valve 23. The exhaust side vent pipe 21 is a pipe that returns the gas inside the case 2 to the buffer tank 12, and is desirably provided at a position according to the convection state of the gas inside the case 2. The exhaust side vent pipe 21 may be provided at one location or at multiple locations.

[0034] Pressure adjustment unit 22 is connected to exhaust side ventilation pipe 21, and operates according to the difference between external pressure (atmospheric pressure) which is the air pressure outside, and internal pressure which is the air pressure inside preservation system 1, and reduces the difference between the internal pressure and the external pressure. Pressure adjustment unit 22 has a first pressure adjustment unit 221 and a second pressure adjustment unit 222.

[0035] FIG. 3 is a diagram illustrating a schematic configuration of a first pressure adjusting section according to the embodiment. First pressure adjustment section 221 mainly operates when the internal pressure is negative relative to the external pressure, and includes a first storage section 2211, a second storage section 2212, and a communication pipe 2213 connected to exhaust side ventilation pipe 21.

[0036] The first storage section 2211 is formed in a tank shape, stores gas therein (gas within the storage system 1), and has a first intake and exhaust section 2211a to which a communication pipe 2213 is connected.

[0037] The second storage section 2212 is disposed inside the first storage section 2211, stores gas (air outside the storage system 1) therein, is connected to the outside atmosphere, and has a second intake and exhaust section 2212a in which a nanofilter is disposed. The second storage section 2212 is formed in a bellows shape whose internal volume is variable, and the size of the internal space varies depending on the difference between the air pressure inside the first storage section 2211 (the internal pressure of the storage system 1) and the air pressure inside the second storage section 2212 (the air pressure outside the storage system 1 (atmospheric pressure)).

[0038] When the internal pressure of the preservation system 1 is negative relative to the external pressure (atmospheric pressure), which is the external air pressure, the first pressure adjustment unit 221 operates such that the air pressure inside the first storage unit 2211 becomes lower than the air pressure inside the second storage unit 2212, and the space defined by the second storage unit 2212 becomes larger (for example, the second storage unit 2212 expands as shown in Figure 3), and the internal pressure and external pressure are in equilibrium.

[0039] FIG. 4 is a diagram illustrating a schematic configuration of a second pressure adjusting section according to the embodiment. The second pressure adjusting section 222 mainly operates when the internal pressure is positive relative to the external pressure, and includes a first storage section 2221, a second storage section 2222, and a communication pipe 2223 connected to the exhaust side ventilation pipe 21.

[0040] The first storage section 2221 is formed in a tank shape, stores gas (air outside the storage system 1) therein, and has a first intake and exhaust section 2221a connected to the outside atmosphere.

[0041] The second storage section 2222 is disposed inside the first storage section 2221, stores gas therein (gas in the storage system 1), is connected to a communication pipe 2223, and has a second intake / exhaust section 2222a in which a nanofilter is disposed. The second storage section 2222 is formed in a bellows shape whose internal volume is variable, and the size of the internal space varies depending on the difference between the air pressure inside the first storage section 2221 (the air pressure outside the storage system 1 (atmospheric pressure)) and the air pressure inside the second storage section 2222 (the internal pressure of the storage system 1).

[0042] When the internal pressure of the preservation system 1 is positive relative to the external pressure (atmospheric pressure), which is the external air pressure, the second pressure adjustment section 222 operates such that the air pressure inside the first storage section 2221 becomes lower than the air pressure inside the second storage section 2222, and the space defined by the second storage section 2222 becomes larger (for example, the second storage section 2212 expands as shown in Figure 4), and the internal pressure and external pressure are in equilibrium.

[0043] In this embodiment, the pressure adjustment unit 22 is composed of a first pressure adjustment unit 221 that operates when the internal pressure is negative relative to the external pressure, and a second pressure adjustment unit 222 that operates when the internal pressure is positive relative to the external pressure, but this is not limited to this, and only one of the pressure adjustment units may be provided and operated when the internal pressure is either positive or negative relative to the external pressure.

[0044] Returning to FIG. 2, the gel valve 23 has a first gel valve 23A and a second gel valve 23B. FIG. 5 is a diagram showing a schematic configuration of the gel valve according to the embodiment. The gel valve 23 includes a gel containing portion 231 and a gas containing portion 232 .

[0045] The gel storage portion 231 stores gel (for example, fluorine-silicon gel), communicates the outside and the inside of the gel valve 23, and has a communication portion 231a in which a nanofilter is disposed. The gas storage section 232 stores the gas that has flowed into the gel storage section 231 from the communication section 231a and passed through the gel storage section 231, and has a communication section 232a.

[0046] 2, the first gel valve 23A has a communication part 231a connected to the exhaust side ventilation pipe 21. The second gel valve 23B has a communication part 232a connected to the exhaust side ventilation pipe 21.

[0047] Gel valve 23 functions as a part of the pressure adjustment section, and functions, for example, when the difference between the internal pressure and the external pressure cannot be reduced by pressure adjustment section 22 alone. For example, when the internal pressure is positive relative to the external pressure, and the internal pressure and the external pressure do not become equilibrium by the operation of second pressure adjustment section 222 alone, gas inside preservation system 1 is released to the outside from first gel valve 23A. On the other hand, when the internal pressure is negative relative to the external pressure, and the internal pressure and the external pressure do not become equilibrium by the operation of first pressure adjustment section 221 alone, outside air is supplied into preservation system 1 from second gel valve 23B.

[0048] In this way, by further providing a gel valve 23 as part of the pressure adjustment section, it is possible to prevent the airtightness inside the preservation system 1 from collapsing due to the difference between the external pressure and the internal pressure when there is a large change in air pressure.

[0049] The gel valve 23 enhances the safety of the preservation system 1 and may be omitted. In the present embodiment, the gel valve 23 is configured with the first gel valve 23A that operates when the internal pressure is positive relative to the external pressure, and the second gel valve 23B that operates when the internal pressure is negative relative to the external pressure, but this is not limiting, and only one of them may be provided to operate when the internal pressure is either positive or negative relative to the external pressure.

[0050] 2, the sensor 30 detects the temperature, internal pressure, outside air temperature, outside air pressure, etc. inside the case 2. For example, the valve 13 may be configured as a solenoid valve, and a control unit may be provided to control the valve 13, and the opening and closing of the valve 13 may be controlled by this control unit in accordance with the difference between the internal pressure and the outside pressure detected by the sensor 30.

[0051] According to the storage system 1 of this embodiment, the following advantageous effects are achieved. Conventional atmospheric release type preservation cases usually require a considerable amount of gas to be released from airtight display cases, making it difficult to create an oxygen-free atmosphere. Specifically, conventionally, a small amount of gas was used to maintain an oxygen-free atmosphere, consuming 1000L every three weeks to 1000L every six months, but the preservation system 1 of this embodiment can maintain an oxygen-free atmosphere for one to two years with 1000L. This allows the use of argon gas, which has no effect on any substance and was previously too expensive to use.

[0052] The preservation system 1 of this embodiment is a cylinder type, and unlike the conventional airtight type, it is suitable for a sealed type that is nearly completely sealed, and it is possible to adjust the internal pressure from a highly airtight preservation exhibition case that is nearly airtight to an airtight airtight type. In other words, by providing the pressure adjustment unit 22 and the gel valve 23, the internal pressure can be adjusted more flexibly to adjust the gas volume according to changes in air pressure and temperature, so that the emission of gas can be suppressed, and when a sudden change in external pressure occurs due to a sudden change in air pressure and temperature, it becomes possible to immediately suck in and exhaust gas for safety reasons. In addition, since the pressure adjusting section 22 and the gel valve 23 operate based on the difference between the internal pressure and the external pressure, they do not require a power source for pressure adjustment, and can therefore be used in disaster situations or in areas with poor electrical conditions.

[0053] Also, for safety reasons, a gel valve was adopted. This valve is not prone to metal deterioration or mechanical malfunction, instead of the conventional metal or mechanically operated valve. Also, unlike liquid valves, the gel valve will not spill even if it is turned upside down, so there is more freedom in where it can be installed.

[0054] The present invention is not limited to the above-described embodiment, and modifications and improvements within the scope of the present invention that can achieve the object of the present invention are included in the present invention. [Explanation of symbols]

[0055] 1. Storage System 2 Cases 3 Case Stand 10 Air supply section 11 Cylinder 12 Buffer Tank 13 Valve 14 Ventilation device 20 Exhaust section 21 Exhaust side vent pipe 22 Pressure Regulating Section 23 Gel Valve 23A 1st gel valve 23B 2nd gel valve 30 Sensors 221 First pressure adjustment section 222 Second pressure adjusting section 231 Gel storage section 231a Communication part 232 Gas storage section 232a Communication part

Claims

1. A case having an airtight space formed therein; an air supply unit provided on a side that supplies gas to the inside of the case; an exhaust section that returns gas exhausted from inside the case to the air supply section, the exhaust section has a pressure adjusting section that adjusts an internal pressure in the exhaust section, The pressure adjusting unit is a storage system that operates in response to a difference between an external pressure, which is an external air pressure, and the internal pressure, and reduces the difference between the internal pressure and the external pressure, The pressure adjusting unit is A first storage section having a first intake and exhaust section and storing gas therein; A second storage portion having a second intake and exhaust portion, disposed inside the first storage portion, and storing gas therein; The first intake and exhaust unit is connected to either the exhaust unit side or the outside atmosphere side, The second intake and exhaust unit is connected to either the exhaust unit side or the outside atmosphere side, A storage system in which the second storage portion changes in size of its internal space depending on the difference in air pressure between the first storage portion and the second storage portion.

2. The pressure adjusting unit has a first pressure adjusting unit and a second pressure adjusting unit, The first pressure adjusting unit is The first intake and exhaust unit is connected to the exhaust unit side, The second intake and exhaust unit is connected to the outside atmosphere side, The second pressure adjusting unit is The first intake and exhaust unit is connected to the outside atmosphere side, The storage system according to claim 1 , wherein the second intake and exhaust unit is connected to the exhaust unit side.

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