A central air-conditioning device with dual drive of compression refrigeration and air dehumidification

Abstract

The invention belongs to the technical field of air conditioning, and specifically discloses a compression refrigeration and air dehumidification dual-driven central air conditioning device, comprising: a fanless closed countercurrent cooling tower, an air conditioning air supply system, a lithium chloride solution moisture absorption device, a lithium chloride solution air drying regeneration device, a plate heat exchanger Freon compressor, a fresh air blower, a lithium chloride concentrated solution pump, a lithium chloride dilute solution pump, a throttling pressure reducing expansion valve, a Freon evaporation heat absorption heat exchanger and a Freon condensation heat release heat exchanger; the device has the following advantages: the energy driven by the Freon compression refrigeration inverse temperature difference is reduced by half compared with the energy required by the overall air conditioning unit to be driven by the inverse temperature difference.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a compression refrigeration and air dehumidification dual-driven central air conditioning device. Background Art

[0002] Currently, central air conditioners that produce cool air basically use a single-drive mode of Freon compression refrigeration to push low-temperature energy indoors to a relatively high-temperature environment outdoors. After years of development, Freon compression refrigeration technology has become very mature, but its energy efficiency has reached a bottleneck, and it is difficult to further improve the energy efficiency.

[0003] Therefore, a central air-conditioning device with dual drive of compression refrigeration and air dehumidification is proposed to solve the above-mentioned problems. Summary of the invention

[0004] The present invention aims to provide a compression refrigeration and air dehumidification dual-drive central air-conditioning device to solve or improve at least one of the above-mentioned technical problems.

[0005] In view of this, a first aspect of the present invention is to provide a compression refrigeration and air dehumidification dual-drive central air-conditioning device.

[0006] A first aspect of the present invention provides a compression refrigeration and air dehumidification dual-drive central air conditioning device, comprising:

[0007] A fanless closed countercurrent cooling tower, an air conditioning system, a circulating fan, a lithium chloride solution moisture absorption device, a lithium chloride solution air drying regeneration device, a plate heat exchanger, a Freon compressor, a fresh air blower, a lithium chloride concentrated solution pump, a lithium chloride dilute solution pump, a throttling and pressure reducing expansion valve, a Freon evaporation heat absorption heat exchanger and a Freon condensation heat release heat exchanger; the fanless closed countercurrent cooling tower is used to cool the circulating cold water discharged from the air conditioning system to obtain low-temperature circulating cold water and return it to the air conditioning system, and the air conditioning system is cooled by an air heat exchanger and low-temperature circulating cold water. The low-temperature air-conditioning supply air is produced, and the low-temperature circulating cold water is heated. The air-conditioning supply air system discharges the heated circulating cold water to the fanless closed countercurrent cooling tower; the fanless closed countercurrent cooling tower cools the circulating cold water by circulating dry air, and the circulating dry air is discharged to the fanless closed countercurrent cooling tower by the lithium chloride solution moisture absorption device. The circulating dry air becomes circulating wet air after contacting the circulating cold water, and the circulating wet air is sent into the lithium chloride solution moisture absorption device by the circulating fan. The lithium chloride solution moisture absorption device sprays the low-temperature lithium chloride concentrated solution and contacts the lithium chloride solution. The circulating wet air is converted into the circulating dry air and sent back to the fanless closed countercurrent cooling tower, and the lithium chloride concentrated solution is converted into a dilute lithium chloride solution due to moisture absorption and the temperature is increased; the dilute lithium chloride solution is sequentially sent to the plate heat exchanger and the Freon condensing heat exothermic heat exchanger through the lithium chloride dilute solution pump, and sequentially heat-exchanged with the lithium chloride concentrated solution passing through the plate heat exchanger and the Freon passing through the Freon condensing heat exothermic heat exchanger to increase the temperature; the heated dilute lithium chloride solution is sent to the lithium chloride solution air-drying regeneration device, and the lithium chloride solution air-drying regeneration device The dilute lithium chloride solution is sprayed and brought into contact with fresh air, so that the dilute lithium chloride solution is dried, concentrated, regenerated and cooled by the fresh air to obtain a concentrated lithium chloride solution. The fresh air is discharged into the atmosphere after passing through the lithium chloride solution air-drying and regeneration device. The concentrated lithium chloride solution is sequentially sent to the plate heat exchanger and the Freon evaporation heat absorption heat exchanger through the lithium chloride concentrated solution pump, and is sequentially heat-exchanged and cooled with the dilute lithium chloride solution passing through the plate heat exchanger and the Freon passing through the Freon evaporation heat absorption heat exchanger. The cooled concentrated lithium chloride solution is sent to the lithium chloride solution moisture absorption device.

[0008] In any of the above technical solutions, the fanless closed countercurrent cooling tower and the air conditioning air supply system are connected via a circulating cold water pump, and the circulating cold water pump is used to transport the circulating cold water.

[0009] In any of the above technical solutions, a fresh air blower is provided on the lithium chloride solution air-drying regeneration device, and the fresh air blower is used to transport fresh air into the lithium chloride solution air-drying regeneration device.

[0010] In any of the above technical solutions, the Freon evaporation heat absorption heat exchanger and the Freon condensation heat release heat exchanger are respectively connected through a Freon compressor and throttling and decompression expansion to circulate and transport the Freon.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] By adopting a dual-drive mode combining Freon compression refrigeration and air lithium chloride solution dehumidification, due to the heat exchange between the concentrated solution and the dilute solution during the dehumidification and regeneration of the lithium chloride solution, the energy required for the Freon compression refrigeration to be driven by the reverse temperature difference is reduced by half compared with the energy required for the reverse temperature difference to be driven by the overall air conditioning unit, thereby opening up room for improving the energy efficiency ratio. The present invention is used to manufacture central air conditioners, which can achieve an ultra-high energy efficiency ratio that is more than 50% higher than the energy efficiency ratio of the commonly used Freon compression refrigeration air conditioners.

[0013] Additional aspects and advantages of embodiments according to the present invention will become apparent in the following description or may be learned through practice of embodiments according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0015] Figure 1 It is a structural diagram of the present invention.

[0016] in, Figure 1 The corresponding relationship between the reference numerals and the component names is as follows:

[0017] 1. Fanless closed countercurrent cooling tower, 2. Circulating cold water pump, 3. Air conditioning air supply system, 4. Circulating fan, 5. Lithium chloride solution dehumidification device, 6. Lithium chloride dilute solution pump, 7. Lithium chloride solution air drying regeneration device, 8. Lithium chloride concentrated solution pump, 9. Fresh air blower, 10. Plate heat exchanger, 11. Freon compressor, 12. Throttling and pressure reducing expansion valve, 13. Freon evaporation heat absorption heat exchanger, 14. Freon condensation heat release heat exchanger. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0020] See also Figure 1 , the following describes some embodiments of the compression refrigeration and air dehumidification dual-drive central air-conditioning device of the present invention.

[0021] As mentioned in the background technology, the current central air conditioners for producing cool air basically adopt a single drive mode of Freon compression refrigeration to push the indoor low-temperature energy to the relatively high-temperature environment outdoors. Its working principle is: the gaseous Freon refrigerant is compressed into high-pressure gas by a compressor. After compression, the temperature and pressure of the gaseous Freon will increase. After entering the condenser, because its temperature is higher than the temperature of the relatively high-temperature environment outdoors, it can still push energy to the environment through heat conduction and heat exchange. At the same time, the high-pressure gaseous Freon is cooled and condensed into high-pressure liquid Freon; the high-pressure liquid Freon enters the evaporator after being decompressed by the expansion valve. Because the pressure in the evaporator is relatively low, the liquid Freon can evaporate quickly in the evaporator and cool down to a temperature lower than that in the low-temperature room, and successfully absorb the low-temperature energy from the low-temperature room through heat conduction and heat exchange. The circulating Freon refrigerant realizes the refrigeration process of pushing the indoor low-temperature energy to the relatively high-temperature environment outdoors through the reciprocating process of continuous compression condensation and expansion decompression evaporation. After years of development, Freon compression refrigeration technology has become very mature, but its energy efficiency ratio (COP) has reached a bottleneck and is difficult to improve further.

[0022] In view of the above-mentioned technical problems, the first embodiment of the present invention proposes a central air-conditioning device with dual drive of compression refrigeration and air dehumidification. In some embodiments of the present invention, such as Figure 1 As shown, the compression refrigeration and air dehumidification dual-driven central air conditioning device includes:

[0023] Fanless closed countercurrent cooling tower 1, air conditioning air supply system 3, circulating fan 4, lithium chloride solution moisture absorption device 5, lithium chloride solution air drying regeneration device 7, plate heat exchanger 10, Freon compressor 11, fresh air blower 9, lithium chloride concentrated solution pump 8, lithium chloride dilute solution pump 6, throttling and pressure reducing expansion valve 12, Freon evaporation heat absorption heat exchanger 13 and Freon condensation heat release heat exchanger 14.

[0024] The fanless closed countercurrent cooling tower 1 is used for circulating cold water discharged from the air conditioning and air supply system 3 to obtain low-temperature circulating cold water and send it back to the air conditioning and air supply system 3. The air conditioning and air supply system 3 produces low-temperature air conditioning air through an air heat exchanger and low-temperature circulating cold water cooling, and heats the low-temperature circulating cold water. The air conditioning and air supply system 3 discharges the heated circulating cold water to the fanless closed countercurrent cooling tower 1.

[0025] The fanless closed countercurrent cooling tower 1 cools the circulating cold water by circulating dry air, and the circulating dry air is discharged to the fanless closed countercurrent cooling tower 1 by the lithium chloride solution moisture absorption device 5. The circulating dry air becomes circulating wet air after contacting the circulating cold water, and the circulating wet air is sent to the lithium chloride solution moisture absorption device 5 by the circulating fan 4. The lithium chloride solution moisture absorption device 5 sprays the low-temperature lithium chloride concentrated solution and contacts the circulating wet air to become circulating dry air and send it back to the fanless closed countercurrent cooling tower 1, and the lithium chloride concentrated solution becomes a dilute lithium chloride solution due to moisture absorption and the temperature increases.

[0026] The dilute lithium chloride solution is sequentially sent to the plate heat exchanger 10 and the Freon condensing heat release heat exchanger 14 through the dilute lithium chloride solution pump 6, and is sequentially heated by heat exchange with the concentrated lithium chloride solution passing through the plate heat exchanger 10 and the Freon passing through the Freon condensing heat release heat exchanger 14.

[0027] The heated lithium chloride dilute solution is sent to the lithium chloride solution air-drying regeneration device 7, which sprays the lithium chloride dilute solution and contacts it with fresh air, so that the lithium chloride dilute solution is air-dried, concentrated, regenerated and cooled by the fresh air to obtain a lithium chloride concentrated solution. The fresh air passes through the lithium chloride solution air-drying regeneration device 7 and is discharged into the atmosphere.

[0028] The lithium chloride concentrated solution is sequentially sent to the plate heat exchanger 10 and the Freon evaporation heat absorption heat exchanger 13 by the lithium chloride concentrated solution pump 8, and is sequentially heat-exchanged and cooled with the lithium chloride dilute solution passing through the plate heat exchanger 10 and the Freon passing through the Freon evaporation heat absorption heat exchanger 13. The cooled lithium chloride concentrated solution is sent to the lithium chloride solution moisture absorption device 5.

[0029] The present invention provides a compression refrigeration and air dehumidification dual-driven central air-conditioning device, the fresh air data used is the outdoor fresh air data under extremely high temperature in areas such as Guangzhou, a southern city that is relatively hot and humid in summer, and the dew point temperature is as high as 29°C. With the continuous change of outdoor fresh air data, the compression refrigeration and air dehumidification dual-driven ultra-high energy efficiency central air-conditioning device of the present invention can still maintain continuous automatic operation and ensure that the air supply of the air conditioner is not affected.

[0030] The compression refrigeration and air dehumidification dual-driven ultra-high energy efficiency ratio central air conditioning device of the present invention, the compression refrigeration undertakes the heat pump function of pushing the energy in the low-temperature lithium chloride solution into the high-temperature lithium chloride solution, which is consistent with the heat pump function of the compression refrigeration air conditioner to push the indoor low-temperature energy to the relatively high-temperature environment outdoors. The air lithium chloride solution dehumidification utilizes the characteristic that the water vapor partial pressure of the lithium chloride solution changes greatly with temperature and concentration (the higher the temperature, the lower the concentration, the greater the water vapor partial pressure, and the lower the temperature, the higher the concentration, the smaller the water vapor partial pressure). By changing the concentration and temperature parameters of the lithium chloride solution, the lithium chloride solution is made to complete the process of absorbing moisture from the circulating air and spitting water into the fresh air to be dried and concentrated by the fresh air. The dual drive of Freon compression refrigeration and air lithium chloride solution dehumidification works together to realize the complete refrigeration process of the air conditioning unit.

[0031] The compression refrigeration and air dehumidification dual-driven ultra-high energy efficiency ratio central air conditioning device of the present invention uses dehumidified circulating dry air, which has a moisture content of 8g / Kg at 30°C and a dew point of 12°C, and is cooled to 21°C circulating cold water return water through a fanless closed countercurrent cooling tower 1, and 16°C circulating cold water supply water is obtained and pumped to the air conditioning air supply system 3, and low-temperature air conditioning air is produced by cooling through an air heat exchanger, and the air conditioning air supply system 3 is heated to 21°C circulating cold water return water and then returned to the fanless closed countercurrent cooling tower 1 to be cooled again to 16°C. When the circulating cold water is cooled by the fanless closed countercurrent cooling tower 1, part of the water will evaporate and evaporate, so the circulating cold water needs to be replenished with water in time and replaced and discharged at a fixed ratio.

[0032] The central air conditioning device with ultra-high energy efficiency ratio driven by compression refrigeration and air dehumidification of the present invention has circulating dry air with a moisture content of 8g / Kg at 30°C and a dew point of 12°C. After cooling the circulating cold water through a fanless closed countercurrent cooling tower 1, the circulating dry air is humidified and discharged from the cooling tower to become circulating wet air with a moisture content of 15g / Kg at 26°C and a dew point of 22°C. The circulating wet air is sent to the lithium chloride solution moisture absorption device 5 by a blower, and the low temperature sprayed is 33°C. The lithium chloride concentrated solution absorbs moisture and is converted back to obtain circulating dry air with a moisture content of 8g / Kg at 30°C and a dew point of 12°C. At the same time, the lithium chloride concentrated solution is converted into a lithium chloride dilute solution due to moisture absorption, and the temperature also rises to 38°C.

[0033] The compression refrigeration and air dehumidification dual-driven ultra-high energy efficiency ratio central air-conditioning device of the present invention uses a dilute lithium chloride solution with a temperature of 38° C., which is heated to 55° C. by being pumped to a heat exchanger for heat exchange and absorbing high-temperature heat pushed by the Freon compression refrigeration.

[0034] The compression refrigeration and air dehumidification dual-driven ultra-high energy efficiency ratio central air conditioning device of the present invention is heated to a high-temperature lithium chloride dilute solution of 55°C, which is sent to the lithium chloride solution air drying regeneration device 7. The sprayed high-temperature lithium chloride dilute solution drops into the fresh air and spits water. The lithium chloride dilute solution is thus air-dried, concentrated and regenerated by the fresh air to become a lithium chloride concentrated solution with a temperature of 50°C. The fresh air is humidified into high-temperature and high-humidity air with a moisture content of 33g / Kg at 43°C and a dew point of 37°C after passing through the lithium chloride solution air drying regeneration device 7, and is sent to the atmosphere after the discharge device.

[0035] The compression refrigeration and air dehumidification dual-driven ultra-high energy efficiency ratio central air-conditioning device of the present invention has a lithium chloride concentrated solution with a temperature of 50°C. It is pumped to a heat exchanger for heat exchange and releases low-temperature energy to an evaporative heat exchanger for Freon compression refrigeration, and is cooled to 33°C. It is then sent to a lithium chloride solution moisture absorption device 5 to absorb moisture in the circulating wet air to produce circulating dry air, thereby achieving a cyclic reciprocating continuous operation.

[0036] Furthermore, the fanless closed countercurrent cooling tower 1 and the air conditioning air supply system 3 are connected via a circulating cold water pump 2, and the circulating cold water pump 2 is used to transport circulating cold water.

[0037] Furthermore, a fresh air blower 9 is provided on the lithium chloride solution air-drying regeneration device 7 , and the fresh air blower 9 is used to transport fresh air into the lithium chloride solution air-drying regeneration device 7 .

[0038] Furthermore, the Freon evaporation heat absorption heat exchanger 13 and the Freon condensation heat release heat exchanger 14 are respectively expanded through the Freon compressor 11 and throttling pressure reduction to circulate and transport the Freon.

[0039] Another embodiment of the first aspect of the present invention provides a refrigeration method. In some embodiments of the present invention, such as Figure 1 As shown, the refrigeration method is implemented by a compression refrigeration and air dehumidification dual-drive central air conditioning device of any of the above embodiments, and includes the following steps:

[0040] S1, in the dilute solution state, the circulating liquid at 55 degrees contacts with fresh air at 36 degrees and a humidity of 23g / Kg in the lithium chloride solution air-drying regeneration device 7, becomes a circulating liquid at 55 degrees and in a concentrated solution state, and enters the plate heat exchanger 10;

[0041] S2, the circulating liquid in the plate heat exchanger 10 at 55 degrees and in the concentrated solution state is heat-exchanged with the circulating liquid in the dilute solution state at 38 degrees, and becomes the circulating liquid in the concentrated solution state at 41 degrees and the circulating liquid in the dilute solution state at 47 degrees, and enters the Freon heat exchange mechanism respectively;

[0042] S3, secondary heat exchange is performed through the Freon heat exchange mechanism, and the circulating liquid is changed into a concentrated solution state at 33 degrees and a dilute solution state at 55 degrees respectively;

[0043] S4, the circulating liquid at 55 degrees and in a dilute solution state enters the lithium chloride solution air-drying regeneration device 7, and the circulating liquid at 33 degrees and in a concentrated solution state enters the lithium chloride solution moisture absorption device 5;

[0044] S5, the circulating liquid at 33 degrees and in a concentrated solution state in the lithium chloride solution dehumidification device 5 contacts the circulating air at 26 degrees and with a humidity of 15g / Kg, and becomes the circulating liquid at 38 degrees and in a dilute solution state and the circulating air at 30 degrees and with a humidity of 8g / Kg respectively;

[0045] S6, the circulating liquid at 38 degrees and in a dilute solution state enters the plate heat exchanger 10, and the circulating air at 30 degrees and a humidity of 8g / Kg enters the fanless closed countercurrent cooling tower 1;

[0046] S7, in the fanless closed countercurrent cooling tower 1, the circulating air at 30 degrees and a humidity of 8g / Kg contacts the circulating water at 21 degrees, and becomes the circulating air at 26 degrees and a humidity of 15g / Kg and the circulating water at 16 degrees respectively;

[0047] S8, the circulating air at 26 degrees and humidity 15g / Kg enters the lithium chloride solution moisture absorption device 5, and the circulating water at 16 degrees enters the air conditioning and air supply system 3;

[0048] S9, the 16-degree circulating water in the air conditioning system 3 cools the air conditioning air and turns it into 21-degree circulating water;

[0049] S10, circulating water at 21 degrees enters the fanless closed countercurrent cooling tower 1.

[0050] Another embodiment of the first aspect of the present invention proposes a refrigeration method. If there is no heat exchange between the high-temperature lithium chloride concentrated solution and the low-temperature lithium chloride dilute solution, Freon compression refrigeration is directly used to push the low-temperature energy in the low-temperature lithium chloride dilute solution to the high-temperature lithium chloride concentrated solution to achieve cooling the high-temperature lithium chloride concentrated solution from 50°C to 33°C and heating the low-temperature lithium chloride dilute solution from 38°C to 55°C. The energy required for the Freon compression refrigeration to push the reverse temperature difference will be relatively large, and the energy efficiency ratio of the overall central air conditioner will be close to that of the single-drive mode central air conditioner of the currently commonly used Freon compression refrigeration. The present invention first uses a plate heat exchanger 10 to heat the high-temperature lithium chloride concentrated solution and the low-temperature lithium chloride dilute solution. The process of cooling the high-temperature lithium chloride concentrated solution from 50°C to 33°C is first cooled to 41°C by the heat exchanger; the process of heating the low-temperature lithium chloride concentrated solution from 38°C to 55°C is first heated to 47°C by the heat exchanger. In this way, Freon compression refrigeration pushes the low-temperature energy in the low-temperature lithium chloride dilute solution into the high-temperature lithium chloride concentrated solution. It only needs to cool the high-temperature lithium chloride concentrated solution from 41°C to 33°C and heat the low-temperature lithium chloride dilute solution from 47°C to 55°C. The energy required for Freon compression refrigeration to push the reverse temperature difference is reduced by half. The energy efficiency ratio of the overall central air-conditioning of the present invention will be greatly improved compared with the currently commonly used single-drive mode central air-conditioning of Freon compression refrigeration.

[0051] The compression refrigeration and air dehumidification dual-driven ultra-high energy efficiency central air-conditioning device of the present invention, the temperature data cited in the above description of the working principle will fluctuate with the changes in the temperature parameters of the environment or outdoor fresh air during actual use. As long as the working principle diagram of the present invention is used to manufacture the same or similar air-conditioning device, the temperature parameter changes within the range of plus or minus 15°C, which are within the intellectual property rights requirements of the present invention.

[0052] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A compression refrigeration and air dehumidification dual-drive central air conditioning device, characterized in that: include: Fanless closed countercurrent cooling tower, air conditioning system, circulating fan, lithium chloride solution moisture absorption device, lithium chloride solution air drying regeneration device, plate heat exchanger, Freon compressor, fresh air blower, lithium chloride concentrated solution pump, lithium chloride dilute solution pump, throttling pressure reducing expansion valve, Freon evaporation heat absorption heat exchanger and Freon condensation heat release heat exchanger; The fanless closed countercurrent cooling tower is used to cool the circulating cold water discharged from the air conditioning and air supply system to obtain low-temperature circulating cold water and return it to the air conditioning and air supply system. The air conditioning and air supply system produces low-temperature air conditioning and air supply through an air heat exchanger and low-temperature circulating cold water cooling, and heats the low-temperature circulating cold water. The air conditioning and air supply system discharges the heated circulating cold water to the fanless closed countercurrent cooling tower; The fanless closed countercurrent cooling tower cools the circulating cold water by circulating dry air, and the circulating dry air is discharged to the fanless closed countercurrent cooling tower by the lithium chloride solution moisture absorption device. The circulating dry air becomes circulating wet air after contacting the circulating cold water, and the circulating wet air is sent into the lithium chloride solution moisture absorption device by the circulating fan. The lithium chloride solution moisture absorption device sprays the low-temperature lithium chloride concentrated solution and contacts the circulating wet air to become the circulating dry air and send it back to the fanless closed countercurrent cooling tower, and the lithium chloride concentrated solution becomes a dilute lithium chloride solution due to moisture absorption and the temperature increases; The dilute lithium chloride solution is sequentially sent to the plate heat exchanger and the Freon condensing heat release heat exchanger by the dilute lithium chloride solution pump, and is sequentially heated by heat exchange with the concentrated lithium chloride solution passing through the plate heat exchanger and the Freon passing through the Freon condensing heat release heat exchanger; The heated lithium chloride dilute solution is sent to the lithium chloride solution air-drying regeneration device, which sprays the lithium chloride dilute solution and contacts it with fresh air, so that the lithium chloride dilute solution is air-dried, concentrated, regenerated and cooled by the fresh air to obtain a lithium chloride concentrated solution, and the fresh air is discharged into the atmosphere after passing through the lithium chloride solution air-drying regeneration device; The lithium chloride concentrated solution is sequentially sent to the plate heat exchanger and the Freon evaporation heat absorption heat exchanger by the lithium chloride concentrated solution pump, and sequentially heat-exchanged and cooled with the lithium chloride dilute solution passing through the plate heat exchanger and the Freon passing through the Freon evaporation heat absorption heat exchanger, and the cooled lithium chloride concentrated solution is sent to the lithium chloride solution moisture absorption device; Part of the water is lost by evaporation when the circulating cold water is cooled by the fanless closed countercurrent cooling tower, and the circulating cold water needs to be supplemented with water and replaced and discharged at a certain ratio.

2. A compression refrigeration and air dehumidification dual-drive central air conditioning device according to claim 1, characterized in that: The fanless closed countercurrent cooling tower and the air conditioning air supply system are connected via a circulating cold water pump, and the circulating cold water pump is used to transport the circulating cold water.

3. A compression refrigeration and air dehumidification dual-drive central air conditioning device according to claim 1, characterized in that: The lithium chloride solution air-drying and regeneration device is provided with a fresh air blower, and the fresh air blower is used to transport fresh air into the lithium chloride solution air-drying and regeneration device.

4. A compression refrigeration and air dehumidification dual-drive central air conditioning device according to claim 1, characterized in that: The Freon evaporation heat absorption heat exchanger and the Freon condensation heat release heat exchanger are respectively subjected to a Freon compressor and throttling and decompression expansion to circulate and transport the Freon.

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