An integrated fresh air dehumidifier for underground space

Abstract

The present invention discloses an integrated fresh air dehumidifier for underground spaces, which relates to the field of air conditioning technology. An integrated fresh air dehumidifier for underground spaces includes an installation box and an air inlet box and an air exhaust box fixedly installed at both ends of the installation box. It also includes: an air conditioning system arranged in the installation box and an air intake system arranged in the air intake box, the air intake system draws external air through the low-temperature end of the air conditioning system for dehumidification; a temperature and humidity monitoring system, which monitors the temperature and humidity inside the underground space, the temperature and humidity of the exhaust gas, and the temperature of the low-temperature end of the air conditioning system; the present invention dynamically adjusts the temperature of the evaporator through a heat exchange liquid circulation system to ensure that its surface is always higher than the freezing point of water molecules in the air, avoiding frosting problems, without the need to stop the machine for defrosting, improving dehumidification efficiency while reducing the start and stop of the compressor to avoid large fluctuations in the evaporator's own temperature, thereby increasing the service life of the compressor while preventing the evaporator from leaking due to thermal expansion and contraction.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioning, and in particular relates to an integrated fresh air dehumidifier for underground space. Background Art

[0002] Underground granaries are a traditional way of storing grain in underground space. However, due to the particularity of the underground environment, problems such as moisture, condensation, and mildew are prone to occur inside the granaries, which seriously affect the safety of grain storage and even lead to grain loss. Therefore, dehumidifiers (also known as air dryers) are needed to ventilate and dehumidify the underground granaries.

[0003] At present, when an air-conditioning-type fresh air dehumidifier is in use, frost will form on the surface of the evaporator due to the low temperature of the evaporator. After the evaporator is frosted, it needs to be defrosted by an electric heating system or a heat exchange system. The compressor stops working and the dehumidification function is suspended, resulting in the inability to continuously control the humidity in the granary. If the ambient temperature is low (such as below 10°C), the defrosting time may be as long as half an hour or more. Frequent defrosting will significantly reduce the overall dehumidification efficiency, and frequent defrosting will cause frequent fluctuations in humidity. Frequent humidity fluctuations may cause grain to be briefly exposed to a high humidity environment, increasing the risk of local condensation or mold growth. In view of the above problems, an integrated fresh air dehumidifier for underground space is proposed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an integrated fresh air dehumidifier for underground spaces that can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] An integrated fresh air dehumidifier for underground space, comprising an installation box and an air inlet box and an exhaust box fixedly installed at both ends of the installation box, and also comprising: an air-conditioning system arranged in the installation box and an air inlet system arranged in the air inlet box, the air inlet system draws external air through the low-temperature end of the air-conditioning system for dehumidification; a temperature and humidity monitoring system, which monitors the temperature and humidity inside the underground space, the temperature and humidity of the exhaust gas, and the temperature of the low-temperature end of the air-conditioning system; a heat exchange liquid circulation system arranged in the installation box, the heat exchange liquid circulation system absorbs heat from the high-temperature end of the air-conditioning system and controls the amount of heat exchange between the heat exchange liquid vapor and the dehumidified low-temperature air and the refrigerant at the low-temperature end of the air-conditioning system according to data provided by the temperature and humidity monitoring system; a spray system arranged in the air inlet box, the spray system controls the amount of water sprayed into the air inlet system according to data provided by the temperature and humidity monitoring system; an exhaust system arranged in the exhaust box, the exhaust system controls the temperature of the exhaust according to data provided by the temperature and humidity monitoring system.

[0007] As a preferred embodiment of the present invention: the installation box is provided with an evaporation chamber, a water flow chamber, a liquefaction chamber, and an installation chamber from top to bottom, the bottom of the evaporation chamber is connected with the water flow chamber, and a heat conduction plate is fixedly installed on the partition between the water flow chamber and the liquefaction chamber. The installation chamber is provided with a first partition chamber and a second partition chamber, and the tops of the first partition chamber and the second partition chamber are both connected with the evaporation chamber.

[0008] As a preferred embodiment of the present invention: the air-conditioning system includes a compressor fixedly installed in the second partition chamber, a condenser fixedly installed in the installation chamber, an evaporator fixedly installed in the evaporation chamber, a temperature regulating tube arranged in the evaporation chamber and an expansion valve arranged in the first partition chamber. The compressor, condenser, expansion valve, temperature regulating tube and evaporator are connected in series in sequence to form a closed pipeline, and the refrigerant circulates inside the closed pipeline.

[0009] As a preferred embodiment of the present invention: the heat exchange liquid circulation system includes a sealed flow guide cover fixedly installed in the installation cavity, the condenser is arranged below the sealed flow guide cover, and heat exchange liquid overflowing the condenser is provided below the sealed flow guide cover, the top of the sealed flow guide cover is provided with a second flow channel for heat exchange with the temperature regulating tube and a first flow channel for heat exchange with low-temperature dry air, and the bottom of the liquefaction chamber is fixedly installed with a drain pipe extending below the liquid level of the heat exchange liquid.

[0010] As a preferred embodiment of the present invention: the first flow channel includes a first guide tube fixedly installed at the exhaust end of the sealed guide cover, a first control valve is provided on the first guide tube, an exhaust box is fixedly installed at the output end of the first guide tube, and the top of the exhaust box is connected to the liquefaction chamber.

[0011] As a preferred embodiment of the present invention: the second flow channel includes a second guide tube fixedly installed at the exhaust end of the sealed guide cover, a second control valve is provided on the second guide tube, a first heat exchange tube is fixedly installed at the output end of the second guide tube, the first heat exchange tube is wound around the temperature regulating tube, a thermal insulation cover is fixedly installed in the evaporation chamber, and the first heat exchange tube and the temperature regulating tube are both arranged in the thermal insulation cover.

[0012] As a preferred embodiment of the present invention: the air intake system includes an air intake pipe fixedly installed in the air intake box, the air intake pipe is connected to the air inlet of the evaporation chamber, the air inlet end of the air intake pipe is fixedly installed with a filter, the evaporation chamber is fixedly installed with a mounting bracket, and the mounting bracket is fixedly installed with a fan.

[0013] As a preferred embodiment of the present invention: the spray system includes a water tank fixedly installed in the air inlet box, a water collection tank connected to the water flow chamber is fixedly installed on the outer wall of the installation box, the output end of the water collection tank extends into the water tank, and a drain pipe is fixedly installed at the output end of the water tank, a third control valve is provided on the drain pipe, the drain pipe extends into the air inlet pipe and is fixedly installed with an adjustable spray head, and the adjustable spray head is arranged above the filter.

[0014] As a preferred embodiment of the present invention: the exhaust system includes an air guide cover fixedly installed in the exhaust box, the output end of the air guide cover is fixedly installed with a first exhaust pipe, and the first exhaust pipe is provided with a fourth control valve.

[0015] As a preferred embodiment of the present invention: the exhaust system also includes a second heat exchange tube arranged and fixedly installed in the liquefaction chamber, and a diverter box and a gas collecting box are fixedly installed at both ends of the second heat exchange tube, the input end of the gas collecting box is connected with the output end of the air guide cover through the second exhaust pipe, the output end of the gas collecting box is fixedly installed with an air guide pipe, the output end of the air guide pipe is connected to the first exhaust pipe, and a fifth control valve is provided on the air guide pipe.

[0016] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: the present invention dynamically adjusts the temperature of the evaporator through the heat exchange liquid circulation system, ensuring that its surface is always higher than the freezing point of water molecules in the air, avoiding frosting problems, and no need to stop for defrosting. While improving the dehumidification efficiency, it reduces the start and stop of the compressor and avoids large fluctuations in the evaporator's own temperature, thereby increasing the service life of the compressor and preventing the evaporator from leaking due to thermal expansion and contraction.

[0017] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the attached figure:

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of an integrated fresh air dehumidifier for underground space proposed by the present invention;

[0020] Figure 2 This is a left sectional view of an integrated fresh air dehumidifier for underground space proposed by the present invention;

[0021] Figure 3 The invention proposes an integrated fresh air dehumidifier for underground space Figure 2 Schematic diagram of the structure at A in the middle;

[0022] Figure 4 This is a right sectional view of an integrated fresh air dehumidifier for underground space proposed by the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of an air conditioning system with an integrated fresh air dehumidifier for underground space proposed by the present invention;

[0024] Figure 6 This is a schematic structural diagram of a heat exchange fluid circulation system of an integrated fresh air dehumidifier for underground spaces proposed by the present invention;

[0025] Figure 7 This is a schematic structural diagram of the air intake system of an integrated fresh air dehumidifier for underground spaces proposed by the present invention;

[0026] Figure 8 This is a schematic structural diagram of an exhaust system of an integrated fresh air dehumidifier for underground space proposed by the present invention;

[0027] Figure 9 This is a schematic structural diagram of a spray system for an integrated fresh air dehumidifier for underground spaces proposed by the present invention;

[0028] Figure 10 This is a structural schematic diagram of a temperature and humidity monitoring system for an integrated fresh air dehumidifier for underground space proposed by the present invention.

[0029] Figure: 1. Installation box; 11. Evaporation chamber; 12. Water chamber; 13. Liquefaction chamber; 14. Installation chamber; 15. First partition chamber; 16. Second partition chamber; 2. Air conditioning system; 21. Compressor; 22. Condenser; 23. Expansion valve; 24. Thermostatic tube; 25. Evaporator; 3. Heat exchange fluid circulation system; 31. Sealed flow guide cover; 32. First flow guide tube; 33. First control valve; 34. Exhaust box; 35. Second flow guide tube; 36. Second control valve ; 37. First heat exchange tube; 4. Air inlet box; 41. Air inlet duct; 42. Mounting bracket; 43. Fan; 44. Filter; 5. Spray system; 51. Water collecting tank; 52. Water storage tank; 53. Drain pipe; 54. Third control valve; 6. Exhaust box; 61. Air guide hood; 62. First exhaust duct; 63. Fourth control valve; 64. Second exhaust duct; 65. Diverter box; 66. Second heat exchange tube; 67. Gas collection box; 68. Air guide duct; 69. Fifth control valve. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0031] Example: Refer to Figures 1-10, an integrated fresh air dehumidifier for underground space, including an installation box 1 and an air inlet box 4 and an exhaust box 6 fixedly installed at both ends of the installation box 1, wherein an evaporation chamber 11, a water flow chamber 12, a liquefaction chamber 13, and an installation chamber 14 are sequentially arranged in the installation box 1 from top to bottom, the bottom of the evaporation chamber 11 is connected to the water flow chamber 12, and a heat conduction plate is fixedly installed on the partition between the water flow chamber 12 and the liquefaction chamber 13, and a first partition chamber 15 and a second partition chamber 16 are arranged in the installation chamber 14, and the tops of the first partition chamber 15 and the second partition chamber 16 are both connected to the evaporation chamber 11, and further comprising: an air conditioning system 2 arranged in the installation box 1 and an air intake system arranged in the air inlet box 4, the air intake system extracts external air through the air conditioning system 2 dehumidifies the low-temperature end of the air-conditioning system; a temperature and humidity monitoring system monitors the temperature and humidity inside the underground space, the temperature and humidity of the exhaust gas, and the temperature of the low-temperature end of the air-conditioning system 2; a heat exchange liquid circulation system 3 arranged in the installation box 1, the heat exchange liquid circulation system 3 absorbs the heat of the high-temperature end of the air-conditioning system 2 and controls the heat exchange amount between the heat exchange liquid vapor and the dehumidified low-temperature air and the refrigerant at the low-temperature end of the air-conditioning system 2 according to the data provided by the temperature and humidity monitoring system; a spray system 5 arranged in the air inlet box 4, the spray system 5 controls the amount of water sprayed into the air inlet system according to the data provided by the temperature and humidity monitoring system; an exhaust system arranged in the exhaust box 6, the exhaust system controls the temperature of the exhaust air according to the data provided by the temperature and humidity monitoring system.

[0032] Among them, the temperature and humidity monitoring system includes an indoor temperature and humidity sensor set for monitoring the indoor temperature and humidity, a low-temperature monitoring sensor set at the liquid inlet end of the evaporator 25 in the air-conditioning system 2, and an outlet temperature and humidity monitoring sensor set after the output in the exhaust system, as well as a controller for adjusting the control valve flow through sensor data.

[0033] When the dehumidifier is in use, the air flow, the flow of heat exchange liquid vapor, and the amount of water sprayed by the spray system 5 are controlled according to the indoor temperature and humidity data monitored by the temperature and humidity monitoring system, the temperature at the input end of the evaporator 25, and the temperature at the outlet. In this way, the temperature and humidity of the air flow sprayed into the room are controlled, and the refrigerant inside the evaporator 25 is kept in a certain low temperature range, so that there is no need to stop the machine for defrosting, and the surface temperature of the evaporator 25 is prevented from being too low and frosting, which affects the dehumidification effect. In this way, the indoor temperature and humidity are kept in the optimal temperature and humidity range, and the indoor temperature and humidity fluctuations are reduced. At the same time, the compressor 21 in the air-conditioning system 2 can be prevented from being started and stopped repeatedly, thereby preventing damage to the compressor 21, and preventing the surface temperature of the evaporator 25 from causing metal fatigue and leakage in the evaporator 25 due to the heat exchange, thereby extending the service life of the air-conditioning system 2. In addition, the heat exchange liquid absorbs the heat of the condenser 22 to evaporate into steam, and exchanges heat with the refrigerant after expansion and cooling after passing through the expansion valve 23 of the air-conditioning system 2 to maintain the temperature range of the refrigerant entering the evaporator 25. Therefore, no external energy (such as heating by a heating wire) is required for defrosting, thereby reducing defrosting energy consumption.

[0034] Reference Figure 2-Figure 6 and Figure 10 The air conditioning system 2 includes a compressor 21 fixedly installed in the second partition chamber 16, a condenser 22 fixedly installed in the installation chamber 14, an evaporator 25 fixedly installed in the evaporation chamber 11, a thermostatic tube 24 (the thermostatic tube 24 is preferably a heat exchange copper tube) arranged in the evaporation chamber 11, and an expansion valve 23 arranged in the first partition chamber 15. The compressor 21, the condenser 22, the expansion valve 23, the thermostatic tube 24, and the evaporator 25 are connected in series in sequence to form a closed pipeline. The refrigerant circulates inside the closed pipeline. The heat exchange liquid circulation system 3 includes a sealed flow guide 31 fixedly installed in the installation chamber 14. The condenser 22 is arranged below the sealed flow guide 31, and a heat exchange liquid is provided below the sealed flow guide 31 to flow over the condenser 22 (the heat exchange liquid can be an ethylene glycol aqueous solution (PG25) or a fluorinated liquid. After using the ethylene glycol aqueous solution (PG25) as the heat exchange liquid, the heat exchange liquid circulation system 3 can be sealed. The channel is filled with nitrogen as a protective gas and internal oxygen is discharged). The top of the sealed flow guide 31 is provided with a second flow channel for heat exchange with the temperature regulating tube 24 and a first flow channel for heat exchange with low-temperature dry air. The bottom of the liquefaction chamber 13 is fixedly installed with a drain pipe extending below the liquid level of the heat exchange liquid. The first flow channel includes a first flow guide pipe 32 fixedly installed at the exhaust end of the sealed flow guide 31, a first control valve 33 is provided on the first flow guide pipe 32, and an exhaust box 34 is fixedly installed at the output end of the first flow guide pipe 32. The top of the exhaust box 34 is connected to the liquefaction chamber 13. The second flow channel includes a second flow guide pipe 35 fixedly installed at the exhaust end of the sealed flow guide 31, a second control valve 36 is provided on the second flow guide pipe 35, and a first heat exchange pipe 37 is fixedly installed at the output end of the second flow guide pipe 35. The first heat exchange pipe 37 is wound around the temperature regulating tube 24. A thermal insulation cover is fixedly installed in the evaporation chamber 11, and the first heat exchange pipe 37 and the temperature regulating tube 24 are both arranged in the thermal insulation cover.

[0035] When in use, the compressor 21 drives the refrigerant to flow. During this process, the refrigerant passes through the condenser 22, the expansion valve 23, the thermostatic tube 24 and the evaporator 25 in sequence, and then enters the compressor 21 again. During this process, the refrigerant exchanges heat with the air blown in by the air intake system in the evaporator 25 to increase the temperature and vaporize. Then, it is compressed into a high-temperature and high-pressure gas by the compressor 21 and enters the condenser 22 to exchange heat with the heat exchange fluid and cool it down to form a high-pressure and medium-temperature liquid. Then, it expands into a low-temperature and low-pressure liquid through the expansion valve 23, and then is conducted to the evaporator 25 through the thermostatic tube 24 to exchange heat with the airflow.

[0036] During the refrigerant circulation process, the heat exchange liquid is heated and vaporized through heat exchange with the refrigerant in the condenser 22 in the installation cavity 14, and then enters the sealed guide cover 31. The first control valve 33 and the second control valve 36 are controlled to operate according to the temperature data on the surface of the evaporator 25 monitored by the temperature and humidity, so as to adjust the flow direction of the heat exchange liquid vapor.

[0037] When the external ambient temperature decreases, causing the surface temperature of the evaporator 25 to decrease, and when the surface temperature of the monitored evaporator 25 reaches the freezing point, the flow of the second control valve 36 increases and the flow of the first control valve 33 decreases. At this time, the flow of the heat exchange liquid into the first heat exchange tube 37 through the second guide tube 35 is increased, and heat exchange is performed with the thermostatic tube 24 through the first heat exchange tube 37, thereby increasing the temperature of the refrigerant about to enter the evaporator 25, so that the refrigerant entering the evaporator 25 is higher than the freezing point of water, preventing water vapor in the external air from forming frost on the evaporator 25. In addition, during the heat exchange process, the heat exchange liquid vapor in the first heat exchange tube 37 is cooled and liquefied and discharged into the liquefaction chamber 13, and then refluxes into the heat exchange liquid in the installation chamber 14 through the drain pipe.

[0038] On the contrary, when the external ambient temperature rises and causes the temperature of the evaporator 25 to rise, the flow of the second control valve 36 can be reduced and the flow of the first control valve 33 can be increased to lower the temperature of the evaporator 25, so that the temperature of the evaporator 25 is always maintained in the normal working range, avoiding the temperature after dehumidification being too high or too low.

[0039] In normal working conditions, the flow rates of the first control valve 33 and the second control valve 36 are controlled in a certain ratio to ensure the normal operation of the air-conditioning system 2, thereby ensuring the humidity and temperature balance of the air entering the room, while avoiding frost on the surface of the evaporator 25, thereby preventing the compressor 21 from starting and stopping multiple times and preventing the pipes of the evaporator 25 from leaking due to multiple thermal expansion and contraction.

[0040] like Figure 2 and Figure 3 As shown, the partitions between the water flow chamber 12 and the liquefaction chamber 13 and the partitions between the liquefaction chamber 13 and the installation chamber 14 are all arranged at an angle, and if the two sets of partitions intersect, they can form a "<". Therefore, during the operation of the evaporator 25, the condensed water drips into the water flow chamber 12 under the action of gravity and then flows obliquely downward under the guidance of the inclined surface, while the heat exchange liquid vapor exchanges heat with the condensed water through the heat conduction plate to reduce the temperature and re-liquefy and drip onto the bottom wall of the liquefaction chamber 13, and then is discharged into the heat exchange liquid again along the drain pipe.

[0041] To prevent the heat exchange fluid from flowing back inside the liquefaction chamber 13, the bottom surface of the heat conduction plate is at least one millimeter higher than the bottom surface of the partition between the liquefaction chamber 13 and the water flow chamber 12, thereby forming a height difference to control the backflow of the liquefied heat exchange fluid.

[0042] Furthermore, in order to prevent the cooling capacity of the condensed water from being insufficient, an external water source or an external wind source may be connected to the water flow chamber 12 to supplement the cooling capacity of the liquefied heat exchange liquid.

[0043] Reference Figure 2 、 Figure 4 、 Figure 8 and Figure 9 The air intake system includes an air intake pipe 41 fixedly installed in the air intake box 4, the air intake pipe 41 is connected to the air inlet of the evaporation chamber 11, and a filter 44 is fixedly installed at the air inlet end of the air intake pipe 41 (the filter 44 can be a HEPA filter, an activated carbon composite filter, a corrugated aluminum fin or a porous copper filter, etc.), a mounting bracket 42 is fixedly installed in the evaporation chamber 11, and a fan 43 is fixedly installed on the mounting bracket 42. The spray system 5 includes a water storage tank 52 fixedly installed in the air intake box 4, and a water collection tank 51 connected to the water flow chamber 12 is fixedly installed on the outer wall of the mounting box 1. The output end of the water collection tank 51 extends into the water storage tank 52, and the output end of the water storage tank 52 is fixedly installed with a drain pipe 53, and a third control valve 54 is provided on the drain pipe 53. The drain pipe 53 extends into the air intake pipe 41 and is fixedly installed with an adjustable spray head, which is arranged above the filter 44.

[0044] The condensed water after heat exchange with the heat exchange liquid steam flows into the water collecting tank 51 and then flows into the water storage tank 52 through the water collecting tank 51 for storage.

[0045] When the fan 43 is working, negative pressure is generated in the air inlet pipe 41, thereby drawing external air through the filter 44 to enter the evaporation chamber 11 for heat exchange and dehumidification with the refrigerant in the evaporator 25.

[0046] During use, when the liquid level sensor inside the water tank 52 detects that the condensed water in the water tank 52 reaches a preset threshold, the third control valve 54 opens and the adjustable sprinkler head is adjusted to the drainage mode, thereby discharging the water in the water tank 52 into the air inlet pipe 41. Under the action of gravity, the water in the air inlet pipe 41 falls to backwash the filter 44.

[0047] In addition, when the indoor humidity is too low, the third control valve 54 can be opened to adjust the adjustable sprinkler head to the spray mode, spraying the air filtered by the filter 44, thereby increasing the humidity of the air entering the evaporation chamber 11. When the dehumidification capacity of the evaporator 25 remains unchanged, the humidity of the air entering the room can be increased, thereby replenishing the humidity in the room.

[0048] Compared with the above embodiment, further, the cooling water in the water tank 52 can be circulated into the water flow chamber 12 through an electric siphon pump to exchange heat with the heat exchange liquid vapor, thereby ensuring the cooling capacity required for the liquefaction of the heat exchange liquid vapor. In addition, the water tank 52 can also be connected to an external water source to replenish water in the water tank 52 where the water level is insufficient.

[0049] Reference Figure 2 、 Figure 4 、 Figure 5 、 Figure 8 、 Figure 9 and Figure 10 The exhaust system includes an air guide hood 61 fixedly installed in the exhaust box 6, and a first exhaust pipe 62 is fixedly installed at the output end of the air guide hood 61, and a fourth control valve 63 is provided on the first exhaust pipe 62. The exhaust system also includes a second heat exchange pipe 66 arranged and fixedly installed in the liquefaction chamber 13, and a diverter box 65 and a gas gathering box 67 are fixedly installed at both ends of the second heat exchange pipe 66. The input end of the gas gathering box 67 is connected to the output end of the air guide hood 61 through the second exhaust pipe 64, and an air guide pipe 68 is fixedly installed at the output end of the gas gathering box 67. The output end of the air guide pipe 68 is connected to the first exhaust pipe 62, and a fifth control valve 69 is provided on the air guide pipe 68.

[0050] When in use, the ratio of cold airflow to hot airflow entering the first exhaust duct 62 can be controlled by controlling the flow ratio of the fourth control valve 63 and the fifth control valve 69, and the temperature of the gas finally discharged can be controlled by mixing two airflows of different temperatures, so as to control the temperature of the airflow discharged into the room in real time according to the indoor temperature.

[0051] Among them, the low-temperature airflow that has been cooled and dehumidified directly enters the first exhaust duct 62 through the flow controlled by the fourth control valve 63, and the flow through the fourth control valve 63 cooperates with the air intake system to increase the air pressure in the air guide hood 61. As the air pressure increases to a certain threshold, under the action of the gas pressure difference, the low-temperature gas enters the diversion box 65 through the second exhaust duct 64 and is diverted into the second heat exchange tube 66 to exchange heat with the heat exchange liquid vapor, thereby improving the liquefaction effect of the heat exchange liquid vapor and increasing its own temperature. Then, it passes through the gas collection box 67, the air guide tube 68 and enters the first exhaust duct 62 under the control of the fifth control valve 69 to mix with the low-temperature airflow, so as to adjust the final ejected temperature, and at the same time cooperates with the spray system 5 to control the temperature and humidity of the final ejected airflow.

[0052] In summary, the dehumidifier dynamically adjusts the temperature of the evaporator 25 through the heat exchange liquid circulation system 3 to ensure that its surface is always higher than the freezing point of water molecules in the air (above 0°C), avoiding frost problems and no need to stop for defrosting. While improving the dehumidification efficiency, it reduces the start and stop of the compressor 21 and avoids large fluctuations in the temperature of the evaporator 25 itself, thereby increasing the service life of the compressor 21 and preventing the evaporator 25 from leaking due to thermal expansion and contraction.

[0053] The dehumidifier reduces the energy consumption required for dehumidification by utilizing the waste heat generated during the refrigerant circulation process and the coldness in the condensed water.

[0054] The dehumidifier is combined with a temperature and humidity monitoring system, an exhaust system, and a spray system 5 to discharge airflows of various humidity and temperatures to meet the fresh air requirements of storage facilities such as indoor and underground warehouses. In addition, by switching the water spray mode of the spray system 5, the filter 44 can be backwashed to prevent the filter 44 from being blocked.

[0055] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the present invention can make slight changes or modifications to equivalent embodiments using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. An integrated fresh air dehumidifier for underground space, comprising an installation box (1) and an air inlet box (4) and an air outlet box (6) fixedly installed at both ends of the installation box (1), characterized in that: Also includes: An air conditioning system (2) is arranged in the installation box (1) and an air intake system is arranged in the air intake box (4), wherein the air intake system draws external air through the low-temperature end of the air conditioning system (2) for dehumidification; Temperature and humidity monitoring system, monitoring the temperature and humidity inside the underground space, the temperature and humidity of the exhaust gas, and the temperature of the low-temperature end of the air-conditioning system (2); A heat exchange fluid circulation system (3) is provided in the installation box (1), wherein the heat exchange fluid circulation system (3) absorbs heat from the high-temperature end of the air-conditioning system (2) and controls the heat exchange amount between the heat exchange fluid vapor and the dehumidified low-temperature air and the refrigerant at the low-temperature end of the air-conditioning system (2) according to data provided by the temperature and humidity monitoring system; a spraying system (5) disposed in the air inlet box (4), wherein the spraying system (5) controls the amount of water sprayed into the air inlet system using data provided by the temperature and humidity monitoring system; An exhaust system is provided in the exhaust box (6), wherein the exhaust system controls the temperature of the exhaust air through data provided by a temperature and humidity monitoring system; The installation box (1) is provided with an evaporation chamber (11), a water flow chamber (12), a liquefaction chamber (13), and an installation chamber (14) in sequence from top to bottom. The bottom of the evaporation chamber (11) is communicated with the water flow chamber (12). A heat conduction plate is fixedly installed on the partition between the water flow chamber (12) and the liquefaction chamber (13). The installation chamber (14) is provided with a first partition chamber (15) and a second partition chamber (16). The tops of the first partition chamber (15) and the second partition chamber (16) are both communicated with the evaporation chamber (11). The air conditioning system (2) comprises a compressor (21) fixedly mounted in the second partition chamber (16), a condenser (22) fixedly mounted in the mounting chamber (14), an evaporator (25) fixedly mounted in the evaporation chamber (11), a temperature regulating tube (24) arranged in the evaporation chamber (11), and an expansion valve (23) arranged in the first partition chamber (15). The compressor (21), condenser (22), expansion valve (23), temperature regulating tube (24), and evaporator (25) are sequentially connected in series to form a closed pipeline. The refrigerant in the closed pipeline is The heat exchange liquid circulation system (3) includes a sealed flow guide cover (31) fixedly installed in the installation cavity (14), the condenser (22) is arranged below the sealed flow guide cover (31), and a heat exchange liquid overflowing the condenser (22) is arranged below the sealed flow guide cover (31), a second flow channel for heat exchange with the temperature regulating tube (24) and a first flow channel for heat exchange with low-temperature dry air are arranged on the top of the sealed flow guide cover (31), and a drain pipe extending to below the liquid level of the heat exchange liquid is fixedly installed at the bottom of the liquefaction cavity (13); The first flow channel comprises a first flow guide pipe (32) fixedly mounted on the exhaust end of the sealing flow guide cover (31), a first control valve (33) being provided on the first flow guide pipe (32), an exhaust box (34) being fixedly mounted on the output end of the first flow guide pipe (32), and the top of the exhaust box (34) being in communication with the liquefaction chamber (13); The second flow channel comprises a second flow guide pipe (35) fixedly mounted on the exhaust end of the sealing flow guide cover (31), a second control valve (36) being provided on the second flow guide pipe (35), a first heat exchange pipe (37) being fixedly mounted on the output end of the second flow guide pipe (35), the first heat exchange pipe (37) being wound around the temperature regulating pipe (24), a temperature insulating cover being fixedly mounted in the evaporation chamber (11), and the first heat exchange pipe (37) and the temperature regulating pipe (24) being both arranged in the temperature insulating cover.

2. The integrated fresh air dehumidifier for underground space according to claim 1, characterized in that: The air intake system comprises an air intake pipe (41) fixedly mounted in the air intake box (4), the air intake pipe (41) being connected to the air intake of the evaporation chamber (11), a filter (44) being fixedly mounted on the air intake end of the air intake pipe (41), a mounting frame (42) being fixedly mounted in the evaporation chamber (11), and a fan (43) being fixedly mounted on the mounting frame (42).

3. The integrated fresh air dehumidifier for underground space according to claim 2, characterized in that: The spray system (5) comprises a water storage tank (52) fixedly mounted in the air inlet box (4); a water collecting trough (51) in communication with the water flow chamber (12) is fixedly mounted on the outer wall of the mounting box (1); an output end of the water collecting trough (51) extends into the water storage tank (52); a drain pipe (53) is fixedly mounted at the output end of the water storage tank (52); a third control valve (54) is provided on the drain pipe (53); the drain pipe (53) extends into the air inlet pipe (41) and is fixedly mounted with an adjustable spray head; the adjustable spray head is arranged above the filter (44).

4. The integrated fresh air dehumidifier for underground space according to claim 1, characterized in that: The exhaust system comprises an air guide cover (61) fixedly mounted in the exhaust box (6); a first exhaust pipe (62) is fixedly mounted on the output end of the air guide cover (61); and a fourth control valve (63) is provided on the first exhaust pipe (62).

5. The integrated fresh air dehumidifier for underground space according to claim 4, characterized in that: The exhaust system further comprises a second heat exchange tube (66) arranged and fixedly installed in the liquefaction chamber (13), a diverter box (65) and a gas collecting box (67) being fixedly installed at both ends of the second heat exchange tube (66), the input end of the gas collecting box (67) being connected to the output end of the air guide cover (61) through the second exhaust pipe (64), an air guide pipe (68) being fixedly installed at the output end of the air collecting box (67), the output end of the air guide pipe (68) being connected to the first exhaust pipe (62), and a fifth control valve (69) being provided on the air guide pipe (68).

Images