阅读说明：本技术 具有温湿独立控制功能的含水文物冷冻干燥除湿空调系统 (Water-containing cultural relic freeze drying dehumidification air-conditioning system with temperature and humidity independent control function ) 是由 杨强 王智超 胡东波 战斌飞 曹宇婷 徐昭炜 于 2021-08-13 设计创作，主要内容包括：一种具有温湿独立控制功能的含水文物冷冻干燥除湿空调系统,除湿系统包括有设置在冻干间外部的低温冷冻除湿机组和设置在冻干间的设备间内并通过四通换向阀与低温冷冻除湿机组相连的除湿末端单元组成,控温系统包括有设置在冻干间外部的低温冷冻控温机组和设置在冻干间的设备间内并通过第一膨胀阀与低温冷冻控温机组相连的控温末端单元组成,除湿末端单元和控温末端单元用于对从形成在冻干间与设备间之间的回风格栅口进入的空气分别进行相应的除湿和温度处理后,再依次通过形成在设备间与冻干间顶部的导风空间之间的送风口、导风空间的送风孔板送入冻干间。本发明既能够对含水文物进行冷冻除湿干燥、又能够在低湿环境下对文物进行长期冷冻保存。(A dehumidifying air-conditioning system with independent temperature and humidity control function for the freeze drying and dehumidifying of water-contained cultural relics is composed of a low-temperature freeze dehumidifying unit outside the freeze drying room, a dehumidifying end unit in the freeze drying room and connected to said low-temperature freeze dehumidifying unit via a four-way change valve, a temperature control system consisting of a low-temperature freeze temperature control unit outside the freeze drying room and a temperature control end unit in the freeze drying room and connected to said low-temperature freeze temperature control unit via a first expansion valve, and a temperature control end unit for respectively dehumidifying and treating the air entering from the return-style grid opening between the freeze drying room and the freeze drying room, and then the air is sent into the freeze-drying room through an air supply outlet formed between the equipment room and the air guide space at the top of the freeze-drying room and an air supply pore plate of the air guide space in sequence. The invention can freeze, dehumidify and dry the water-containing cultural relics and can freeze and store the cultural relics for a long time in a low-humidity environment.)

1. The utility model provides a moisture historical relic freeze drying dehumidification air conditioning system with warm and humid independent control function, is by being used for carrying out freeze drying and freeze dehumidification system and the temperature control system who preserves to the moisture historical relic in the freeze-drying room (A) and constitutes, its characterized in that, dehumidification system and temperature control system can the independent control freeze-drying room (A) in temperature and humidity, dehumidification system including setting up in the freeze-drying room (A) outside low temperature freeze dehumidification unit (2) and set up in the equipment room (B) of freeze-drying room (A) and through four-way reversing valve (23) with the terminal unit of dehumidification that low temperature freeze dehumidification unit (2) link to each other constitutes, temperature control system including setting up in the freeze-drying room (A) outside low temperature freeze temperature control unit (1) and setting in the equipment room (B) of freeze-drying room (A) and through first expansion valve (3) with the terminal unit of temperature control that low temperature freeze temperature control unit (1) links to each other constitutes, the dehumidification end unit and the temperature control end unit are used for respectively carrying out corresponding dehumidification and temperature treatment on air entering from a style-returning grid port (21) formed between the freeze-drying room (A) and the equipment room (B), and then sequentially sending the air into the freeze-drying room (A) through an air supply port (18) formed between the equipment room (B) and an air guide space (16) at the top of the freeze-drying room (A) and an air supply pore plate (15) of the air guide space (16).

2. The moisture-containing cultural relic freeze-drying dehumidification air-conditioning system with independent temperature and humidity control function according to claim 1, wherein the dehumidification end unit is arranged in the equipment room (B) through a square box body (24), the side wall of the square box body (24) at one side of an air return channel (25) communicated with the air return type grid opening (21) is provided with a front air valve (9) for guiding in wind to be processed, the side wall of the square box body (24) at one side of the air supply opening (18) is provided with a rear air valve or a self-hanging louver (14) for guiding out the processed wind, the dehumidification end unit comprises a heat regenerator (10) arranged in the square box body (24), one side of the heat regenerator (10) corresponding to the rear air valve or the self-hanging louver (14) is provided with an indoor condenser (13) and a dehumidification system fan (20), be provided with dehumidification system evaporimeter (8) in the one side of keeping away from indoor condenser (13), the refrigerant entry of indoor condenser (13) is connected through first pipeline (26) a port of four-way reversing valve (23), the refrigerant export of dehumidification system evaporimeter (8) is connected through second pipeline (27) another port of four-way reversing valve (23), compressor and condenser in the freezing dehumidification unit of low temperature (2) are connected respectively to two other ports of four-way reversing valve (23), the refrigerant export of indoor condenser (13) passes through the refrigerant entry of third pipeline (28) connection dehumidification system evaporimeter (8).

3. The moisture-containing cultural relic freeze drying and dehumidifying air-conditioning system with independent temperature and humidity control function according to claim 2, wherein an air inlet channel is formed between an inlet of an air inlet pipe of the heat regenerator (10) and the front air valve (9) through a first partition plate (29) and a second partition plate (30), an air return channel is formed between an outlet of the air inlet pipe of the heat regenerator (10) and an air inlet side of the dehumidifying system evaporator (8) through a third partition plate (31), an air outlet side of the dehumidifying system evaporator (8) is communicated with an inlet of an air outlet pipe of the heat regenerator (10), an outlet of the air outlet pipe of the heat regenerator (10) is communicated with an air inlet side of the indoor condenser (13), and the air outlet side of the indoor condenser (13) corresponds to the rear air valve or the self-hanging louver (14) through a dehumidifying system fan (20).

4. The water-containing cultural relics freeze drying and dehumidifying air-conditioning system with independent temperature and humidity control function as claimed in claim 2, wherein a second expansion valve (7) is arranged on the third pipeline (28).

5. The water-containing cultural relic freeze drying and dehumidifying air-conditioning system with independent temperature and humidity control function as claimed in claim 2, wherein a second electromagnetic valve (12) is arranged on the first pipeline (26) at the position close to the refrigerant outlet of the indoor condenser (13), a first electromagnetic valve (11) is arranged between the first pipeline (26) and the third pipeline (28), when the required refrigerant passes through the indoor condenser (13) and the dehumidifying system evaporator (8) in sequence, the first electromagnetic valve (11) is closed, the second electromagnetic valve (12) is opened, and when the required refrigerant passes through the dehumidifying system evaporator (8) only, the second electromagnetic valve (12) is closed, and the first electromagnetic valve (11) is opened.

6. The water-containing cultural relic freeze drying and dehumidifying air-conditioning system with independent temperature and humidity control function as claimed in claim 2, wherein a water condensation pipe (22) for discharging condensed water is arranged at the bottom of the square box body (24), and a water outlet of the water condensation pipe (22) is positioned outside the freeze drying room (A).

7. The water-containing cultural relics freeze-drying dehumidification air-conditioning system with the independent temperature and humidity control function as claimed in claim 1, it is characterized in that the temperature control end unit comprises a temperature control system evaporator (4) arranged in the equipment room (B), an electric heater (5) is arranged in the temperature control system evaporator (4), the air inlet side of the temperature control system evaporator (4) is communicated with the style returning grid opening (21), the air outlet side of the temperature control system evaporator (4) is communicated with the air supply outlet (18) through a temperature control system fan (6), a refrigerant inlet of the temperature control system evaporator (4) is connected with a condenser in the low-temperature freezing temperature control unit (1) through a fourth pipeline (32) and a first expansion valve (3) arranged on the fourth pipeline (32), and a refrigerant outlet of the temperature control system evaporator (4) is connected with a compressor in the low-temperature freezing temperature control unit (1) through a fifth pipeline (33).

8. The moisture-containing cultural relic freeze drying and dehumidifying air-conditioning system with independent temperature and humidity control function according to claim 7, wherein the temperature control system evaporator (4) is positioned at the lower part of the square box body (24) of the dehumidifying end unit, and the temperature control system evaporator (4) is divided into an air inlet side communicated with the style returning grid port (21) and an air outlet side communicated with the air supply port (18) through a fourth partition plate (34) with the upper end fixed on the outer bottom surface of the square box body (24) and the lower end fixed on the inner bottom surface of the equipment room (B).

Technical Field

The invention relates to an air conditioning system for normal-pressure low-temperature refrigeration and dehumidification. In particular to a water-containing cultural relic freeze drying dehumidification air-conditioning system with temperature and humidity independent control function.

Background

Cultural relics are a witness of the history of the country, and the large-scale construction of our country in recent years leads to the increasing of unearthed cultural relics to be protected. Because of the restriction of times and technologies, most of the traditional ancient buildings in China use wood as a framework, the main bearing material is wood, and the wood buildings are settled for hundreds of years or even thousands of years, so that the wood buildings have extremely high artistic value and cultural relic research value. With the lapse of time, some wooden cultural relics are buried under the ground for hundreds of years or even thousands of years and are eroded by microorganisms in underground water and soil for a long time, so that the cultural relics are damaged to different degrees, and some cultural relics are even completely destroyed. The cultural relics which are not completely destroyed and destroyed become extremely fragile after unearthed due to factors such as too long water soaking time and the like, and are easy to be destroyed in the later period. The unearthed cultural relics need to be dehydrated and dried before being stored for a long time. The cultural relics which are used for display after being dried have slight or no shrinkage, no fracture and no color change, which puts high requirements on the drying process. At present, the most studied drying methods include a natural drying method, a hot air drying method, a continuous vacuum drying method, a freeze drying method and the like, the hot air drying method and the vacuum drying method easily cause shrinkage and cracking of the cultural relics due to the limitations of the hot air drying method and the vacuum drying method, and the natural drying method takes a long time from impregnation to complete drying. There are many methods for drying and dehydrating wooden cultural relics, but each method has its own limitations, advantages and disadvantages. The freeze drying method under the normal pressure environment can effectively prevent the phenomena of shrinkage, cracking, fracture and the like in the drying process, the three-dimensional stability of the dried cultural relics is good, and the cultural relics can not get damp, rot or deteriorate when being stored under the low temperature environment, so that the freeze drying method is a recommended drying and storing method.

Patent number ZL 201610006959.5 has given a dehumidification air conditioning system and method for the freeze drying preservation of water-containing cultural relics, and its dehumidification unit is through the regulation of bypass amount of wind, realizes the control to the dehumidification volume, because dehumidification evaporator dehumidification ability is low, and the consumption is high, and bypass air valve regulation accuse wet precision is relatively poor, consequently can not realize that humidity on a large scale is controllable adjustable. On the basis of patent ZL 201610006959.5, the invention improves a dehumidification unit, realizes large-range adjustment of refrigeration capacity of a dehumidification evaporator by adopting a variable frequency compressor, increases a dehumidification intensifier in a dehumidification air loop to improve the dehumidification capacity of unit refrigeration capacity, and finally realizes independent control of humidity.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a water-containing cultural relic freeze-drying and dehumidifying air-conditioning system which can freeze, dehumidify and dry water-containing cultural relics and can freeze and store the cultural relics for a long time in a low-humidity environment and has a temperature and humidity independent control function.

The technical scheme adopted by the invention is as follows: the utility model provides a moisture historical relic freeze drying dehumidification air conditioning system with temperature and humidity independent control function, is by being used for carrying out freeze drying and freeze preservation's dehumidification system and temperature control system to the moisture historical relic in the freeze-drying room and constitutes, a serial communication port, dehumidification system and temperature control system can the temperature and humidity in the independent control freeze-drying room, dehumidification system including set up in the outside low temperature freeze dehumidification unit of freeze-drying room and set up in the equipment room of freeze-drying room and through the four-way reversing valve with the terminal unit of dehumidification that low temperature freeze dehumidification unit links to each other constitutes, temperature control system including set up in the outside low temperature freeze temperature control unit of freeze-drying room and set up in the equipment room of freeze-drying room and through first expansion valve with the terminal unit of accuse temperature that low temperature freeze temperature control unit links to each other constitutes, terminal unit of dehumidification and temperature control terminal unit be used for carrying out corresponding respectively to the air that gets into from the style of returning to the bars mouth that forms between freeze-drying room and equipment room After dehumidification and temperature treatment, the air is sent into the freeze-drying room through an air supply outlet formed between the equipment room and the air guide space at the top of the freeze-drying room and an air supply pore plate of the air guide space in sequence.

The water-containing cultural relic freeze drying dehumidification air-conditioning system with the temperature and humidity independent control function adopts the double-set air cooling system to independently control the temperature and the humidity, can perform freeze dehumidification and drying on the water-containing cultural relic, can perform long-term freeze preservation on the cultural relic in a low-humidity environment, has multiple functions of refrigeration, dehumidification, defrosting, temperature control, constant temperature and the like, and can be used for freeze drying and preservation of the water-containing cultural relic. The invention has the following beneficial effects:

(1) meanwhile, the method has two working modes of freeze drying and freeze preservation, meets the requirements of cultural relics at different stages of cultural relic treatment, and can be directly used for cultural relic preservation and exhibition in museums.

(2) Adopt low temperature refrigeration dehumidification unit dehumidification, it is efficient to dehumidify, controllable adjustable at the dehumidification in-process, can effectively avoid the amount of wind of traditional freezer big, the drawback of dehumidification inefficiency.

(3) The method of using the double air cooling systems in a matched mode can realize independent control of temperature and humidity, and avoid the influence on cultural relics treatment caused by large temperature and humidity fluctuation.

(4) The low-temperature refrigeration dehumidification unit and the mode of configuring the front air valve and the rear air valve of the dehumidification booster are adopted, the air valve is closed in the defrosting process, the heat leakage risk and the humidity leakage risk are reduced, and the dehumidification efficiency is improved.

(5) The system increases the arrangement of the heat regenerator at the indoor dehumidification end of the low-temperature refrigeration dehumidification unit, and forms a dehumidification intensifier module (cold recovery) for recovering the cold quantity of the dehumidification unit, thereby reducing the whole refrigeration load of the unit and improving the dehumidification performance of the unit.

(6) The system can realize the temperature control of the low-temperature freezing and dehumidifying unit and the low-temperature freezing and temperature controlling unit under the combined action of the dehumidification and drying mode by regulating and controlling the electromagnetic valve, namely, the energy consumption of the built-in electric heater of the low-temperature freezing and temperature controlling unit is reduced by increasing the heat recovery of more indoor condensers, and the purpose of energy conservation is achieved.

(7) The system can be used for dehumidifying and storing small-sized cultural relics and large-sized cultural relics, has a wide application range, and can meet the dehumidifying and storing requirements of different cultural relic types.

(8) The system has higher automation degree and can effectively reduce the use of personnel.

Drawings

Fig. 1 is a schematic structural diagram of a water-containing cultural relic freeze drying dehumidification air-conditioning system with independent temperature and humidity control functions.

In the drawings

A: and B, a freeze-drying room: equipment room

1: low-temperature freezing temperature control unit 2: low-temperature refrigeration dehumidifying unit

3: first expansion valve 4: temperature control system evaporator

5: the electric heater 6: temperature control system fan

7: second expansion valve 8: evaporator of dehumidification system

9: the front air valve 10: heat regenerator

11: first electromagnetic valve 12: second electromagnetic valve

13: indoor condenser 14: rear air valve or self-hanging shutter

15: the air supply orifice plate 16: air guiding space

17: the main door of the freeze-drying room 18: air supply outlet

19: separator 20: dehumidification system fan

21: stylized gate 22: water condensing pipe

23: four-way selector valve 24: square box

25: return air duct 26: first pipeline

27: second pipe line 28: third pipeline

29: first separator 30: second partition plate

31: third partition plate 32: fourth pipeline

33: fifth pipe line 34: fourth partition plate

Detailed Description

The water-containing cultural relics freeze drying dehumidification air-conditioning system with the temperature and humidity independent control function is described in detail with the embodiment and the attached drawings.

The invention relates to a water-containing cultural relic freeze drying and dehumidifying air-conditioning system with temperature and humidity independent control function, which consists of a dehumidifying system and a temperature control system, wherein the dehumidifying system and the temperature control system are used for freeze drying and freeze preservation of water-containing cultural relics in a freeze drying room A, and the dehumidifying system and the temperature control system can independently control the temperature and the humidity in the freeze drying room A. After the cultural relics are stored in the freeze-drying room A, the cultural relics sequentially enter a freeze-drying stage and a freeze storage stage. In the freeze drying stage, there are successively circulating dehumidifying drying mode and defrosting drying mode until the preserved cultural relics are completely dried, and then entering the freeze preservation stage. The freeze drying stage is mainly realized by a dehumidification system and a temperature control system together, and the freeze preservation stage is realized by the temperature control system.

As shown in fig. 1, the dehumidification system comprises a low-temperature freezing and dehumidifying unit 2 arranged outside a freeze-drying room a and a dehumidification end unit arranged in an equipment room B of the freeze-drying room a and connected with the low-temperature freezing and dehumidifying unit 2 through a four-way reversing valve 23, the temperature control system comprises a low-temperature freezing temperature control unit 1 arranged outside the freeze-drying room A and a temperature control end unit arranged in the equipment room B of the freeze-drying room A and connected with the low-temperature freezing temperature control unit 1 through a first expansion valve 3, the dehumidification end unit and the temperature control end unit are used for respectively carrying out corresponding dehumidification and temperature treatment on air entering from the style-returning grid port 21 formed between the freeze-drying room A and the equipment room B, and then the air is fed into the freeze-drying room A through an air supply outlet 18 formed between the equipment room B and an air guide space 16 at the top of the freeze-drying room A and an air supply pore plate 15 of the air guide space 16 in sequence.

The dehumidification end unit is arranged in the equipment room B through a square box body 24, a front air valve 9 for guiding in wind to be processed is formed on the side wall of the square box body 24, which is positioned on one side of a return air channel 25 communicated with the return style grid port 21, a rear air valve or a self-hanging shutter 14 for guiding out the processed wind is formed on the side wall of the square box body 24, which is positioned on one side of the air supply port 18, the dehumidification end unit comprises a heat regenerator 10 arranged in the square box body 24, an indoor condenser 13 and a dehumidification system fan 20 are arranged on one side of the heat regenerator 10, which corresponds to the rear air valve or the self-hanging shutter 14, a dehumidification system evaporator 8 is arranged on one side far away from the indoor condenser 13, a refrigerant inlet of the indoor condenser 13 is connected with one port of the four-way reversing valve 23 through a first pipeline 26, a refrigerant outlet of the dehumidification system evaporator 8 is connected with the four-way reversing valve 23 through a second pipeline 27, and the four-way reversing valve 23 is further arranged on the other side of the dehumidification system evaporator 8 And the other two ports of the four-way reversing valve 23 are respectively connected with a compressor and a condenser in the low-temperature refrigeration and dehumidification unit 2, a refrigerant outlet of the indoor condenser 13 is connected with a refrigerant inlet of the dehumidification system evaporator 8 through a third pipeline 28, and a second expansion valve 7 is arranged on the third pipeline 28. The bottom of the square box body 24 is provided with a water condensation pipe 22 for discharging condensed water, and a water outlet of the water condensation pipe 22 is positioned outside the freeze-drying room A.

The entry of regenerator 10 air-supply line through first baffle 29 and second baffle 30 with preceding blast gate 9 between be formed with inlet air channel, the export of the air-supply line of regenerator 10 is formed with the return air passageway through the air inlet side of third baffle 31 with dehumidification system evaporimeter 8, dehumidification system evaporimeter 8 goes out the wind side intercommunication the entry of regenerator 10 air-out pipe, the export intercommunication that regenerator 10 goes out the wind pipe indoor condenser 13 air-supply side, indoor condenser 13 goes out the wind side and corresponds through dehumidification system fan 20 back blast gate or the tripe 14 that hangs down certainly.

The second electromagnetic valve 12 is arranged on the first pipeline 26 at the refrigerant outlet close to the indoor condenser 13, the first electromagnetic valve 11 is arranged between the first pipeline 26 and the third pipeline 28, when the refrigerant needs to sequentially pass through the indoor condenser 13 and the dehumidification system evaporator 8, the first electromagnetic valve 11 is closed, the second electromagnetic valve 12 is opened, and when the refrigerant needs to only pass through the dehumidification system evaporator 8, the second electromagnetic valve 12 is closed, and the first electromagnetic valve 11 is opened.

Temperature control end unit be in including setting up temperature control system evaporator 4 in the equipment room B, temperature control system evaporator 4 embeds there is electric heater 5, 4 air inlet sides of temperature control system evaporator communicate returns style grid mouth 21, the air-out side of temperature control system evaporator 4 passes through temperature control system fan 6 intercommunication supply-air outlet 18, the refrigerant entry of temperature control system evaporator 4 is in through fourth pipeline 32 and setting first expansion valve 3 on the fourth pipeline 32 is connected condenser in the low temperature refrigeration temperature control unit 1, the refrigerant export of temperature control system evaporator 4 is connected through fifth pipeline 33 compressor in the low temperature refrigeration temperature control unit 1. The temperature control system evaporator 4 is positioned at the lower part of the square box body 24 of the dehumidification tail end unit, the temperature control system evaporator 4 is fixed at the outer bottom surface of the square box body 24 through the upper end, the lower end is fixed on the fourth clapboard 34 on the inner bottom surface of the equipment room B, the fourth clapboard is separated into an air inlet side communicated with the style returning grid port 21 and an air outlet side communicated with the air supply port 18.

In the water-containing cultural relic freeze drying dehumidification air-conditioning system with the independent temperature and humidity control function, the dehumidification tail end and the temperature control tail end can be arranged in a splicing mode as shown in the attached drawing 1 or can be arranged side by side. But is preferably installed in a hanging manner without occupying a bottom space to increase the space of more freeze-drying rooms a.

In the freeze drying stage, in order to ensure the stable control of the temperature and the humidity in the freeze drying room A, the two systems of the dehumidification system and the temperature control system are simultaneously and independently started. The method comprises the following steps: and starting the low-temperature freezing temperature control unit 1 and the temperature control end unit thereof, and the low-temperature freezing dehumidification unit 2 and the dehumidification end unit thereof to realize air circulation in the freeze-drying room.

The air circulation in the invention means that the air in the freeze drying room A is divided into two parts after passing through the style returning grid port 21, one part flows through the temperature control end unit, and the other part flows through the dehumidification end unit. The flow-through temperature control tail end unit means that the air passes through a temperature control system evaporator 4, an electric heater 5 and a temperature control system fan 6 in sequence; the air flowing through the dehumidification end unit sequentially passes through the front air valve 9, the heat regenerator 10 and the dehumidification system evaporator 8, then passes through the heat regenerator 10, and sequentially flows through the indoor condenser 13, the dehumidification system fan 20, the rear air valve or the self-hanging shutter 14. The two air portions are mixed together through the air supply outlet 18 to the air guide space 16 and are sent back to the freeze drying room through the air supply hole plate 15.

The temperature control principle of the temperature control system in the invention means that air circulating through the temperature control system evaporator 4 is cooled by starting the temperature control system fan 6 in the temperature control end unit to provide air flow power. Both can realize the basic control to the temperature in the freeze-drying room A through frequency conversion control low temperature freezing accuse temperature unit 1, also can realize the accurate control to the temperature through normally opening low temperature freezing accuse temperature unit 1 and electric heater 5(PID control).

The dehumidification principle of the dehumidification system in the invention means that the wet air at the temperature close to the dew point firstly passes through the front air valve 9 and then is subjected to heat exchange at the position of the heat regenerator 10 to realize precooling treatment, so that the air is firstly in a near-saturation state, then passes through the dehumidification system evaporator 8 of the dehumidification system to be dehumidified (frosted), and then passes through the heat regenerator 10 and reaches the indoor condenser 13, and the indoor condenser 13 can heat the part of circulating air at the lower temperature to meet the requirement of the set temperature control temperature. The heating effect of the indoor condenser 13 can realize the control of the condensation heat recovery amount of the indoor condenser 13 by automatically controlling the on-off of the first electromagnetic valve 11 and the second electromagnetic valve 12, thereby reducing the heating amount of the electric heater 5 arranged in the temperature control system evaporator 4 and realizing the stable control of the temperature in the freeze-drying room A under the combined action. Indoor condenser 13 is to dehumidification system, mainly plays the effect of subcooling, promotes dehumidification system dehumidification efficiency. The on-off of the first electromagnetic valve 11 and the second electromagnetic valve 12 mainly depends on the outdoor temperature. The outdoor temperature is high, 12 can be opened, and 11 can be closed; the outdoor temperature is low, 12 can be closed, and 11 can be opened.

When the suction pressure of a compressor in the dehumidification system is too low and the wind resistance in the dehumidification tail end unit is too large, the defrosting and drying mode is started. In the defrosting mode, the front air valve 9 and the rear air valve are closed or the vertical shutter 14 is closed, hot fluorine defrosting can be realized through the four-way reversing valve 23, and after a condensed frost layer on the evaporator 8 of the dehumidification system is melted, the condensed frost layer flows into a water condensation pipe 22 connected with the bottom of a square box body 24 in the dehumidification tail end unit under the action of gravity and is discharged out of the freeze-drying room A. Of course, it is within the scope of this patent to add an electric heater to the evaporator of the dehumidification system, and to use the electric heater to defrost.

The water-containing cultural relic freeze drying dehumidification air-conditioning system with the temperature and humidity independent control function can manually set related parameters under different working modes, has high automation degree, can automatically record and store air temperature, humidity, dew point temperature, freezing coil pipe temperature, equipment running state, quality change of water-containing cultural relics and process alarm information in a cultural relic freezing treatment room, namely a freeze drying room A in the process, meets the requirement of data monitoring during freeze drying and long-term storage of the water-containing cultural relics, and is suitable for being used as scientific research by cultural relic archaeology and protection units. The invention discloses a water-containing cultural relic freeze-drying dehumidification air-conditioning system with a temperature and humidity independent control function, which solves the problem that the cultural relic is easy to generate stress in the drying process to cause drying and cracking of the cultural relic at present, also solves the problem that the temperature and humidity field fluctuation in the cultural relic treatment room of other systems in the defrosting stage causes the influence on the cultural relic treatment, and simultaneously provides a method for drying and storing the cultural relic under the low-temperature freezing condition.

The first embodiment of the present invention: the first electromagnetic valve is opened and the second electromagnetic valve is closed, the indoor condenser participates in refrigeration cycle, and the indoor condenser plays a role in supercooling the refrigerant flowing through the indoor condenser, so that the dehumidification energy efficiency of the dehumidification system can be effectively improved.

Another embodiment of the invention: the dehumidification system shown in the attached drawing can realize whether the indoor condenser participates in the refrigeration cycle by switching the first electromagnetic valve and the second electromagnetic valve, but the indoor condenser, the first electromagnetic valve and the second electromagnetic valve can also be removed on the basis of the existing structure, namely, the dehumidification outdoor unit is directly connected with the dehumidification system evaporator through the four-way reversing valve and the second expansion valve. The main reason is that the temperature of the cultural relic freeze-drying room does not need to be raised by the tail end of a dehumidifier system basically, and the low-temperature environment of the cultural relic freeze-drying room is realized by a temperature control system mainly, so that an indoor condenser, a first electromagnetic valve and a second electromagnetic valve are directly removed, and the whole system is more stable and reliable.