阅读说明：本技术 一种低氧恒湿储藏装置及其储藏方法 (Low-oxygen constant-humidity storage device and storage method thereof ) 是由 不公告发明人 于 2020-04-21 设计创作，主要内容包括：本发明涉及一种低氧恒湿装置,包括：气密围护,其中所述气密围护的体积小于20m<Sup>3</Sup>；除氧剂；其经配置以调整和维持所述气密围护内的氧含量；控湿剂和/或干燥剂,包括：调湿剂和/或干燥剂,其经配置以调整和维持所述气密围护内湿度；以及其中,所述控湿剂和/或干燥剂和除氧剂的量至少部分基于所述气密围护的体积和密封性。本申请还涉及一种低氧恒湿装置调控方法。本发明的低氧恒湿储藏装置及储藏方法,不包括主动降氧控湿装置,无需任何换气设备就能够将储藏柜内的气密空间中的氧浓度和湿度保持恒定。(The invention relates to a hypoxia and constant humidity device, comprising: an airtight enclosure, wherein the volume of the airtight enclosure is less than 20m 3 (ii) a An oxygen scavenger; configured to adjust and maintain an oxygen content within the air tight enclosure; a humidity control agent and/or desiccant comprising: a conditioner and/or desiccant configured to adjust and maintain humidity within the airtight enclosure; and wherein the amount of moisture control agent and/or desiccant and oxygen scavenger is based at least in part on the volume and tightness of the air tight enclosure. The application also relates to a regulating and controlling method of the hypoxia constant humidity device. The low-oxygen constant-humidity storage device and the storage method do not comprise an active oxygen reduction and humidity control device, and the airtight air in the storage cabinet can be emptied without any ventilation equipmentThe oxygen concentration and humidity in the compartment remain constant.)

1. A low oxygen constant humidity storage device comprising:

an airtight enclosure, wherein the volume of the airtight enclosure is less than 20m³；

An oxygen scavenger; configured to adjust and maintain an oxygen content within the air tight enclosure; and

a humidity control agent and/or desiccant configured to adjust and maintain humidity within the airtight enclosure;

wherein the oxygen scavenger and moisture control agent and/or desiccant are used in an amount based at least in part on the volume and containment of the air tight enclosure.

2. The low-oxygen constant-humidity storage device of claim 1, wherein the volume of the airtight enclosure is less than 10m³Less than 5m³Or less than 3m³。

3. The low oxygen constant humidity storage device of claim 1, wherein the air exchange rate of the air tight enclosure is less than 0.05d^-1Or less than 0.02d^-1。

4. The low-oxygen constant-humidity storage device of claim 1, wherein the range of oxygen content of the air-tight enclosure is less than 2%; less than 1%; less than 0.5%; or less than or equal to 0.1 percent, and the oxygen content in the airtight enclosure is maintained in the oxygen content range for more than 5 days, more than 10 days, more than 20 days, more than 50 days, more than 100 days or more than 200 days.

5. The low-oxygen constant-humidity storage device according to claim 4, wherein the oxygen scavenger is an iron-based oxygen scavenger or an organic-based type oxygen scavenger.

6. The low-oxygen constant-humidity storage device according to claim 4, wherein the amount of the oxygen scavenger is calculated according to the following formula:

M₁＝A₁·A₂·V·(C₁-C₂)/Q+V·N·D·21％/Q

wherein M is₁The dosage of the oxygen scavenger; a. the₁The influence coefficient of the airtight enclosure structure is obtained; a. the₂Is the coefficient of stored goods; v is the volume of the air-conditioned space; c₁The initial oxygen content in the air-conditioned space; c₂The oxygen content required in the air-conditioned space is obtained; q is oxygen absorption amount of the oxygen scavenger; n is the air exchange rate of the airtight enclosure and D is the time required for low oxygen storage.

7. The low-oxygen constant-humidity storage device of claim 1, wherein the humidity control agent and/or desiccant controls the relative humidity within the airtight enclosure to a target relative humidity; wherein the difference between the relative humidity within the airtight enclosure and the target relative humidity is less than 5%, or less than 3%, over a period of 10 days or more, 20 days or more, 50 days or more, 100 days or more, or 200 days or more.

8. The low-oxygen constant-humidity storage device as claimed in claim 7, wherein the target humidity is in the range of 30% -80% relative humidity at 20-25 ℃.

9. The low-oxygen constant-humidity storage device according to claim 8, wherein the humidity controlling agent and/or the desiccant satisfies the following formula:

M₂＝A₃·K·V·(R_lim-R₂)·S/P；

wherein M is₂For the amount of humidity control agent and/or drying agent, A₃Is the reference value of the dosage in unit volume of the humidity control agent and/or the drying agent in a standard sealing state, K is a humidity parameter, V is the volume of the airtight enclosure, R₂For a target relative humidity, R_limThe humidity is the environmental limit humidity, S is the saturated humidity at the same temperature, and P is the water absorption rate of the humidity control agent and/or the drying agent.

10. The low-oxygen constant-humidity storage device according to claim 9, wherein the amount of the humidity controlling agent and/or the desiccant is calculated according to the following formula:

M₂＝P₁M₁/P+A₃·K·V(R_lim-R₂)·S/P

wherein M is₂The dosage of the humidity control agent and/or the drying agent is controlled; m₁The dosage of the oxygen scavenger; p₁The moisture content of the oxygen scavenger; p is the water absorption of the humidity control agent and/or the drying agent; a. the₃The reference value of the dosage of the humidity control agent and/or the drying agent in unit volume under the standard sealing state; k is a humidity parameter; v is the volume of the airtight space；R_limIs the ultimate relative humidity; r₂Is the target relative humidity; s is the saturation humidity at the same temperature.

11. The low-oxygen constant-humidity storage device according to claim 8, wherein the humidity control agent is a fiber type humidity control agent or a silica gel type humidity control agent.

12. The low-oxygen constant-humidity storage device according to claim 1, wherein the airtight enclosure is a rigid storage cabinet or a display cabinet.

13. The method for storing the low-oxygen constant-humidity storage device according to any one of claims 1 to 12, comprising:

arranging articles to be treated and leaving a space between said articles to be treated;

uniformly placing a humidity control agent and/or a drying agent;

after the humidity control agent and/or the drying agent are/is placed, uniformly placing an oxygen scavenger; and

immediately sealing the hypoxic constant humidity device.

14. The low-oxygen constant-humidity storage method according to claim 13, further comprising: checking or detecting the air tightness of the low-oxygen constant-humidity storage device.

15. The low-oxygen constant-humidity storage method according to claim 13, further comprising: in response to opening the low-oxygen constant-humidity storage device, taking out and replacing all the oxygen scavenger and the humidity control agent and/or the desiccant; and, resealing the hypoxic constant humidity device.

Technical Field

The invention relates to a High-sealing environment Atmosphere control protection technology (CAHS), in particular to a low-oxygen constant-humidity storage device and a storage method thereof.

Background

The storage of the collection such as cultural relics, ancient books and the like has higher requirements on the oxygen content and the humidity of the environment. At present, because the storage environment can not be effectively controlled, some Tibetan products have mildewed, aged and the like to different degrees. The consistent view in the prior art is that the gas in the storage space can be in a low-oxygen and constant-humidity state for a long time only by using an active low-oxygen constant-humidity gas conditioning technology, so that the mildew and oxidation of the Tibetan products are effectively reduced, and the long-term storage of the Tibetan products is realized. However, the relatively high cost of active moisture control creates difficulties in popularization and application. Therefore, how to provide a more economical and convenient storage environment for a large number of collections is a problem to be solved in the art.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides a low-oxygen constant-humidity storage device, which comprises: an airtight enclosure, wherein the volume of the airtight enclosure is less than 20m³(ii) a An oxygen scavenger; configured to adjust and maintain an oxygen content within the air tight enclosure; and a humidity control agent and/or desiccant configured to adjust and maintain humidity within the airtight enclosure; wherein the oxygen scavenger and moisture control agent and/or desiccant are used in an amount based at least in part on the volume and containment of the air tight enclosure.

The low oxygen constant humidity storage device as described above, wherein the volume of the airtight enclosure is less than 10m³Less than 5m³Or less than 3m³。

The hypoxic constant humidity storage apparatus as described above, wherein the ventilation rate of the airtight enclosure is less than 0.05d^-1Or less than 0.02d^-1。

The low-oxygen constant-humidity storage device as described above, wherein the range of oxygen content of the airtight enclosure is less than 2%; less than 1%; less than 0.5%; or less than or equal to 0.1 percent, and the oxygen content in the airtight enclosure is maintained in the oxygen content range for more than 10 days, more than 20 days, more than 50 days, more than 100 days or more than 200 days.

The low-oxygen constant-humidity storage device as described above, wherein the oxygen scavenger is an iron-based oxygen scavenger or an organic-based oxygen scavenger.

The low-oxygen constant-humidity storage device is characterized in that the amount of the oxygen scavenger is calculated according to the following formula:

M₁＝A₁·A₂·V·(C₁-C₂)/Q+V·N·D·21％/Q

wherein M is₁The dosage of the oxygen scavenger; a. the₁The influence coefficient of the airtight enclosure structure is obtained; a. the₂Is the coefficient of stored goods; v is the volume of the air-conditioned space; c₁The initial oxygen content in the air-conditioned space; c₂The oxygen content required in the air-conditioned space is obtained; q is oxygen absorption amount of the oxygen scavenger; n is the air exchange rate of the airtight enclosure and D is the time required for low oxygen storage.

The low-oxygen constant-humidity storage device as described above, wherein the humidity control agent and/or desiccant controls the relative humidity within the airtight enclosure to a target relative humidity; wherein the difference between the relative humidity within the airtight enclosure and the target relative humidity is less than 5%, or less than 3%, over a period of 10 days or more, 20 days or more, 50 days or more, 100 days or more, or 200 days or more.

The low-oxygen constant-humidity storage device comprises a storage container, wherein the target humidity is in a range of 30% -80% of relative humidity under the condition of 20-25 ℃.

The low-oxygen constant-humidity storage device as described above, wherein the humidity control agent and/or the desiccant satisfies the following formula:

M₂＝A₃·K·V·(R_lim-R₂)·S/P；

wherein M is₂For the amount of humidity control agent and/or drying agent, A₃Is the reference value of the dosage in unit volume of the humidity control agent and/or the drying agent in a standard sealing state, K is a humidity parameter, V is the volume of the airtight enclosure, R₂For a target relative humidity, R_limThe humidity is the environmental limit humidity, S is the saturated humidity at the same temperature, and P is the water absorption rate of the humidity control agent and/or the drying agent.

The low-oxygen constant-humidity storage device as described above, wherein the amount of the humidity controlling agent and/or the desiccant is calculated according to the following formula:

M₂＝P₁M₁/P+A₃·K·V(R_lim-R₂)·S/P

wherein M is₂The dosage of the humidity control agent and/or the drying agent is controlled; m₁The dosage of the oxygen scavenger; p₁The moisture content of the oxygen scavenger; p is the water absorption of the humidity control agent and/or the drying agent; a. the₃The reference value of the dosage of the humidity control agent and/or the drying agent in unit volume under the standard sealing state; k is a humidity parameter; v is the volume of the airtight space; r_limIs the ultimate relative humidity; r₂Is the target relative humidity; s is the saturation humidity at the same temperature.

The low-oxygen constant-humidity storage device as described above, wherein the humidity controller is a fiber type humidity controller or a silica gel humidity controller.

The low oxygen constant humidity storage apparatus as described above, wherein the airtight enclosure is a rigid storage cabinet or a display cabinet.

According to another aspect of the present invention, there is provided a method for storing the low-oxygen constant-humidity storage device as described above, comprising: arranging articles to be treated and leaving a space between said articles to be treated; uniformly placing a humidity control agent and/or a drying agent; after the humidity control agent and/or the drying agent are/is placed, uniformly placing an oxygen scavenger; and immediately sealing the hypoxia and humidistat after placing the oxygen scavenger.

The method for storing the low-oxygen constant-humidity food as described above further comprises: checking or detecting the air tightness of the low-oxygen constant-humidity storage device.

The method for storing the low-oxygen constant-humidity food as described above further comprises: in response to opening the low-oxygen constant-humidity storage device, taking out and replacing all the oxygen scavenger and the humidity control agent and/or the desiccant; and, resealing the hypoxic constant humidity device.

The low-oxygen constant-humidity storage device and the storage method do not comprise an active oxygen reduction and humidity control device, and the oxygen concentration and the humidity in the airtight space in the storage cabinet can be kept constant without any ventilation equipment.

Drawings

Preferred embodiments of the present invention will now be described in further detail with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural view of a low-oxygen constant-humidity storage device according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating the change of oxygen content in the low-oxygen constant-humidity storage device according to an embodiment of the present invention; and

fig. 3 is a schematic diagram illustrating humidity changes in the low-oxygen constant-humidity storage device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the following detailed description, reference is made to the accompanying drawings that form a part hereof and in which is shown by way of illustration specific embodiments of the application. In the drawings, like numerals describe substantially similar components throughout the different views. Various specific embodiments of the present application are described in sufficient detail below to enable those skilled in the art to practice the teachings of the present application. It is to be understood that other embodiments may be utilized and structural, logical or electrical changes may be made to the embodiments of the present application.

The invention relates to a low-oxygen constant-humidity storage device, which has very high air tightness so as to ensure that the internal storage space of the storage device is highly isolated from the outside and avoid the influence caused by the change of external oxygen and humidity as much as possible. On the basis, the constant-humidity storage device adopts a passive oxygen content and humidity regulation mode, namely, an oxygen scavenger, a humidity control agent and/or a drying agent in the internal storage space are used for ensuring the low oxygen state and constant humidity in the storage space.

Fig. 1 is a schematic view of a low-oxygen constant-humidity storage device according to one embodiment of the present invention. As shown in fig. 1, the storage device of the present embodiment is a rigid storage cabinet, including: a cabinet body 101 and a cabinet door 102. The cabinet body 101 and the cabinet door 102 form an airtight enclosure. The volume of the airtight enclosure is less than 20m³Or less than 10m³Or less than 5m³Preferably less than3m³. In some embodiments, the air exchange rate of the air tight enclosure is 0.1d^-1Preferably less than 0.05d^-1Most preferably less than 0.02d^-1Wherein the tightness of the gas-tight enclosure is characterized by a gas exchange rate, defined as the proportion of gas displaced within the gas-tight enclosure per day. For example, the ventilation rate is 0.1d^-1Meaning that 10% of the gas inside the airtight enclosure is replaced by the outside gas every day. In some embodiments, the rigid storage cabinet further comprises a safety guard 103 to ensure pressure stability within the airtight enclosure. In some embodiments, the rigid storage cabinet further comprises insulation to keep the temperature within the airtight enclosure less susceptible to the environment. In some embodiments, the airtight enclosure may also be flexible without the need for physical protection.

For a collection, it is desirable to maintain the oxygen concentration at a low level over a long period of time (e.g., over 5 days, over 10 days, over 20 days, over 50 days, over 100 days, or over 200 days). Therefore, on one hand, the oxidation, corrosion and the like of the Tibetan can be reduced, and on the other hand, the insect prevention, disinsection, mildew prevention and bacteriostasis can be realized.

The airtight enclosure comprises an oxygen scavenger so as to control the oxygen content in the airtight enclosure within a certain range. In some embodiments, the oxygen scavenger can reduce the oxygen concentration in the airtight enclosure to below 1% at room temperature (20-25 ℃), and preferably, the oxygen concentration is below 0.1%. In some embodiments, the oxygen scavenger is an iron-based or organic-based oxygen scavenger.

In some embodiments, the amount of oxygen scavenger used may be calculated according to the following formula:

M₁＝A₁·A₂·V·(C₁-C₂)/Q+V·N·D·21％/Q

wherein M is₁The unit is kilogram (kg) for the dosage of the oxygen scavenger; a. the₁The influence coefficient of the airtight enclosure structure is obtained; a. the₂Is the coefficient of stored goods; v is the volume of the air-conditioned space, and the unit is cubic meter (m)³)；C₁The initial oxygen content in the air-conditioned space is expressed in percentage (%); c₂The unit is hundred of the required oxygen content in the air-conditioned spacePercent (%); q is oxygen absorption capacity of oxygen scavenger and has unit of cubic meter per kilogram (m)³/kg); n is the ventilation rate of the airtight enclosure in units of (d) per day^-1) D is the time required for hypoxic storage in days (D); wherein, the coefficient of the airtight enclosing structure is A₁Determining according to the type of the airtight envelope: flexible structures of variable volume, A₁Has a value of 1; for rigid structures A₁Slightly greater than 1. Coefficient of airtight enclosure structure A₂The value range is 0.2-1, which is related to the types of articles stored in the airtight space and the space ratio.

The air-tight enclosure includes a moisture control agent and/or a desiccant. The humidity control agent can not only release humidity but also absorb moisture, and the drying agent can only absorb moisture. In some embodiments, the humidity control agent alone may be used to maintain a constant humidity within the airtight enclosure. In some embodiments, particularly where the oxygen scavenger is moisture-releasing during oxygen removal, the desiccant may be used alone, in combination with the oxygen scavenger, to maintain a constant humidity within the air-tight enclosure. In some embodiments, a combination of moisture control agents and desiccants may also be used.

In some embodiments, the humidity control agent and/or the desiccant has a humidity control range of humidity control in a segmented humidity control range of 30-80% of relative humidity at room temperature (20-25 ℃). The humidity control agent and/or desiccant is/are customized according to the actual desired relative humidity value (i.e., the target relative humidity value). That is, the user may select any one of the humidities between 30% and 80% of the relative humidity as the target relative humidity. For a collection, it is desirable to keep the humidity stable for an extended period of time. In some embodiments, the humidity control agent and/or desiccant controls and stabilizes the relative humidity within the airtight enclosure at a target relative humidity; for example, the difference between the relative humidity within the airtight enclosure and the target relative humidity is less than 5%, or less than 3%, over a period of more than 40 days, more than 100 days, more than 200 days, or more than 300 days.

In some embodiments, the desiccant may be a silica gel desiccant. The non-polluting nature of silica gel desiccant makes it suitable for CAHS technology.

In some embodiments, the moisture control agent is a fibrous moisture control agent. The fiber type humidity control agent is a safe and environment-friendly humidity control agent consisting of natural plant fibers and high polymer materials, and is harmless to Tibetan products and human bodies. Moreover, the fiber type humidity control agent has high humidity capacity, high humidity control speed, balanced moisture absorption and release and high humidity control precision; and the fiber type humidity control agent has no dust or particle leakage, does not pollute the airtight enclosure, and is very suitable for regulating and controlling the humidity of the high-sealing microenvironment of the cultural relic. In some embodiments, the fibrous humidity conditioning material is in the form of a card, which is convenient for matching with a storage cabinet and is convenient for use. Of course, other types of moisture control agents known in the art may also be used. In some embodiments, the moisture control agent may also be a silica gel type moisture control agent.

In some embodiments, the moisture control agent includes two types of moisture control agents, for example, including: a first type of moisture control agent adapted to maintain a humidity in the air tight enclosure at a first humidity value; and a second type of humidity control agent adapted to maintain humidity in the airtight enclosure at a second humidity value. The humidity value in the airtight enclosure can be maintained at the target relative humidity R by properly regulating the proportion of the first type of humidity control agent and the second type of humidity control agent₂Wherein R is₂Between the first and second humidity values. In some embodiments, the target relative humidity R₂The range of (A) is 30-80%.

In some embodiments, the amount of humidity control agent and/or desiccant can be calculated using the following formula:

M₂＝A₃·K·V·(R_lim-R₂)·S/P；

wherein M is₂For the amount of humidity control agent and/or drying agent, A₃Is the reference value of the dosage in unit volume of the humidity control agent and/or the drying agent in a standard sealing state, K is a humidity parameter, V is the volume of the airtight enclosure, R₂For a target relative humidity, R_limThe humidity is the environmental limit humidity, S is the saturated humidity at the same temperature, and P is the water absorption rate of the humidity control agent and/or the drying agent.

In some embodiments, the oxygen scavenger may affect the humidity inside the airtight enclosure to some extent during the oxygen removal process, so that the amount of the humidity control agent and/or the desiccant may need to be adjusted appropriately according to the amount of the oxygen scavenger inside the airtight enclosure. The amount of humidity control agent and/or desiccant is calculated according to the following formula:

M₂＝P₁M₁/P+A₃·K·V·(R_lim-R₂)·S/P

wherein M is₂For controlling the amount of moisture and/or desiccant, M₁The unit is kilogram (kg) for the dosage of the oxygen scavenger; p₁The unit is the moisture release amount of the deoxidant and is percentage (%); p is the water absorption of the humidity control agent and/or the drying agent, and the unit is percentage (%); k is the humidity parameter and V is the volume of the air-tight space in cubic meters (m)³)；R₁Initial relative humidity in percent (%); r₂Target relative humidity in percent (%); s is the saturation humidity at the same temperature and the unit is kilogram/cubic meter (kg/m)³)；A₃The reference value of the moisture control agent and/or the drying agent under the standard sealing state is used.

In some embodiments, the hermeticity of the airtight enclosure is 0.1d^-1When in formula A₃Has a value of about 0.8 to 1.5kg/m³The amount of (c); the sealing performance of the airtight enclosure is about 0.05d^-1When in formula A₃Has a value of about 0.5 to 1.0kg/m³The amount of (c); the air exchange rate of the airtight enclosure is 0.02d^-1Said A is₃About 0.1-0.8kg/m³. It will be understood by those skilled in the art that the foregoing is illustrative only of A₃The value of (a). Due to the effective volume of the airtight space, the placement mode of the humidity control agent and/or the drying agent, the relative stability of the environmental humidity and the like₃Has an influence on the value of (A)₃The values of (c) may thus be different.

In some embodiments, moisture control agents and/or desiccants and oxygen scavengers may be placed in the receiver, within the air tight enclosure. The moisture control agent and/or drying agent and deoxidant are contained in the storage box and are uniformly placed to facilitate rapid adjustment of the humidity of the airtight space.

In some embodiments, since the oxygen scavenger is a disposable consumable, once the airtight enclosure is opened, the oxygen scavenger needs to be replaced to perform the oxygen reduction treatment on the inside of the airtight enclosure again. In addition, the deoxidant influences the humidity value in the airtight enclosure in the deoxidization process, in some embodiments, the water absorption capacity of the humidity control agent and/or the drying agent is limited, and in order to ensure the humidity control precision, the humidity control agent and/or the drying agent and the deoxidant need to be replaced at the same frequency.

The rigid storage cabinet of the present embodiment, which does not include an active oxygen reduction and humidity control device, can maintain the oxygen concentration and humidity in the airtight space inside the storage cabinet constant without any ventilation equipment. Through the test of the inventor, the volume is 3m³Air exchange rate of 0.05d^-1The rigid constant humidity storage cabinet can keep the oxygen concentration below 2 percent and the humidity constant for more than one year only by the oxygen scavenger, the humidity control agent and/or the drying agent. In the period, except for the sensor for detecting the oxygen content and the temperature and humidity, no power is consumed, the storage cost is greatly reduced, and the method is a revolution of the file protection industry.

The low-oxygen constant-humidity storage device and the low-oxygen constant-humidity environment regulation and control method related to the invention are explained in detail below aiming at part of practical application scenarios.