Integrated all fresh air dehumidifier for underground space

Abstract

The invention discloses an integrated full fresh air dehumidifier for underground space, and relates to the technical field of air conditioning. An integrated full fresh air dehumidifier for underground space comprises an installation box, an air inlet box and an air exhaust box, the air inlet box and the air exhaust box are fixedly installed at the two ends of the installation box, the air conditioner system is arranged in the installation box, the air inlet system is arranged in the air inlet box, and the air inlet system extracts external air to penetrate through the low-temperature end of the air conditioner system for dehumidification; the temperature and humidity monitoring system monitors the temperature and humidity in the underground space, the temperature and humidity of exhausted gas and the temperature of the low-temperature end of the air conditioning system; the temperature of the evaporator is dynamically adjusted through the heat exchange liquid circulation system, it is ensured that the surface of the evaporator is always higher than the freezing point of water molecules in air, the frosting problem is avoided, shutdown defrosting is not needed, dehumidification efficiency is improved, starting and stopping of the compressor are reduced, and great fluctuation of the temperature of the evaporator is avoided; therefore, the service life of the compressor is prolonged, and liquid leakage caused by thermal expansion and cold contraction of the evaporator is prevented.

Description

Technical Field

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

[0002] An underground granary is a traditional way of storing grains by using underground spaces. However, due to the particularity of the underground environment, problems such as dampness, condensation, and mildew are likely to occur inside the granary, seriously affecting the safety of grain storage and even causing grain losses. Therefore, a dehumidifier (also known as an air dryer) is needed to dry and dehumidify the ventilation of the underground granary.

[0003] Currently, when an air-conditioning type fresh air dehumidifier is in use, due to the too low temperature of the evaporator, frost will form on the surface of the evaporator. After the evaporator is frosted, it is necessary to use an electric heating system or a heat exchange system to defrost. The compressor stops working and the dehumidification function pauses, resulting in the inability to continuously control the humidity in the granary. If the ambient temperature is relatively low (such as below 10°C), the defrosting time may be more than half an hour. Frequent defrosting will significantly reduce the overall dehumidification efficiency, and frequent defrosting will cause frequent fluctuations in humidity. Frequent humidity fluctuations may cause the grains 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 spaces is proposed herein. 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] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is as follows: An integrated fresh air dehumidifier for underground spaces includes an installation box, an air inlet box and an air outlet box fixedly installed at both ends of the installation box, and further includes: an air conditioning system arranged in the installation box and an air inlet system arranged in the air inlet box. The air inlet system extracts external air and passes it through the low-temperature end of the air conditioning system for dehumidification; a temperature and humidity monitoring system that monitors the temperature and humidity inside the underground space, the temperature and humidity of the discharged 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 the heat at the high-temperature end of the air conditioning system and controls the heat exchange amounts between the heat exchange liquid vapor, the dehumidified low-temperature air, and the refrigerant at the low-temperature end of the air conditioning system according to the data provided by the temperature and humidity monitoring system; a spraying system arranged in the air inlet box. The spraying system controls the amount of water sprayed into the air inlet system according to the data provided by the temperature and humidity monitoring system; an air outlet system arranged in the air outlet box. The air outlet system controls the temperature of the discharged air according to the data provided by the temperature and humidity monitoring system.

[0006] As a preferred embodiment of the present invention: an evaporation chamber, a flowing water chamber, a liquefaction chamber, and an installation chamber are sequentially arranged in the installation box from top to bottom. The bottom of the evaporation chamber communicates with the flowing water chamber. A heat conducting plate is fixedly installed on the partition between the flowing water chamber and the liquefaction chamber. A first partition chamber and a second partition chamber are arranged in the installation chamber. The tops of the first partition chamber and the second partition chamber both communicate with the evaporation chamber.

[0007] 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 pipe arranged in the evaporation chamber, and an expansion valve arranged in the first partition chamber. The compressor, the condenser, the expansion valve, the temperature regulating pipe, and the evaporator are sequentially connected in series to form a closed pipeline, and the refrigerant circulates inside the closed pipeline.

[0008] As a preferred embodiment of the present invention: the heat exchange liquid circulation system includes a sealed diversion cover fixedly installed in the installation chamber. The condenser is arranged below the sealed diversion cover, and heat exchange liquid that submerges the condenser is arranged below the sealed diversion cover. A second flow channel for heat exchange with the temperature regulating pipe and a first flow channel for heat exchange with low-temperature dry air are arranged at the top of the sealed diversion cover. A drain pipe extending below the liquid level of the heat exchange liquid is fixedly installed at the bottom of the liquefaction chamber.

[0009] As a preferred embodiment of the present invention: the first flow channel includes a first diversion pipe fixedly installed at the exhaust end of the sealed diversion cover. A first control valve is arranged on the first diversion pipe. The output end of the first diversion pipe is fixedly installed with an exhaust box, and the top of the exhaust box communicates with the liquefaction chamber.

[0010] As a preferred embodiment of the present invention: the second flow channel includes a second diversion pipe fixedly installed at the exhaust end of the sealed diversion cover. A second control valve is arranged on the second diversion pipe. The output end of the second diversion pipe is fixedly installed with a first heat exchange pipe, and the first heat exchange pipe is wound around the temperature regulating pipe. A heat insulation cover is fixedly installed in the evaporation chamber, and the first heat exchange pipe and the temperature regulating pipe are both arranged inside the heat insulation cover.

[0011] As a preferred embodiment of the present invention: the air inlet system includes an air inlet pipe fixedly installed in the air inlet box. The air inlet pipe is connected to the air inlet of the evaporation chamber. A filter is fixedly installed at the air inlet end of the air inlet pipe. An installation rack is fixedly installed in the evaporation chamber, and a fan is fixedly installed on the installation rack.

[0012] As a preferred embodiment of the present invention: The spraying system includes a water storage tank fixedly installed in the air inlet box. A water collecting tank communicated with the flowing water cavity is fixedly installed on the outer wall of the installation box. The output end of the water collecting tank extends into the water storage tank. The output end of the water storage tank is fixedly installed with a drain pipe. A third control valve is arranged on the drain pipe. The drain pipe extends into the air inlet pipe and is fixedly installed with an adjustable spraying head, and the adjustable spraying head is arranged above the filter.

[0013] As a preferred embodiment of the present invention: The exhaust system includes a wind guiding cover fixedly installed in the exhaust box. The output end of the wind guiding cover is fixedly installed with a first exhaust pipe, and a fourth control valve is arranged on the first exhaust pipe.

[0014] As a preferred embodiment of the present invention: The exhaust system further includes a second heat exchange pipe fixedly installed in the liquefaction cavity. The two ends of the second heat exchange pipe are respectively fixedly installed with a flow dividing box and a gas collecting box. The input end of the gas collecting box is communicated with the output end of the wind guiding cover through a second exhaust pipe. The output end of the gas collecting box is fixedly installed with a wind guiding pipe, and the output end of the wind guiding pipe is connected with the first exhaust pipe. A fifth control valve is arranged on the wind guiding pipe.

[0015] After adopting the above technical solutions, 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 to ensure that its surface is always higher than the freezing point of water molecules in the air, avoiding the frosting problem, eliminating the need for defrosting during downtime, improving the dehumidification efficiency while reducing the start and stop of the compressor to avoid large fluctuations in the temperature of the evaporator itself, thereby increasing the service life of the compressor while preventing liquid leakage caused by the thermal expansion and contraction of the evaporator.

[0016] The following further describes in detail the specific embodiments of the present invention with reference to the accompanying drawings. Description of the Drawings

[0017] In the drawings: Figure 1 is a three-dimensional structural schematic diagram of an integrated fresh air dehumidifier for underground space proposed by the present invention; Figure 2 is a left sectional view of an integrated fresh air dehumidifier for underground space proposed by the present invention; Figure 3 is an integrated fresh air dehumidifier for underground space proposed by the present invention Figure 2 structural schematic diagram at A in; Figure 4 is a right sectional view of an integrated fresh air dehumidifier for underground space proposed by the present invention; Figure 5Schematic diagram of the structure of an air-conditioning system of an integrated fresh-air dehumidifier for underground space proposed by the present invention; Figure 6 Schematic diagram of the structure of a heat exchange liquid circulation system of an integrated fresh-air dehumidifier for underground space proposed by the present invention; Figure 7 Schematic diagram of the structure of an air intake system of an integrated fresh-air dehumidifier for underground space proposed by the present invention; Figure 8 Schematic diagram of the structure of an air exhaust system of an integrated fresh-air dehumidifier for underground space proposed by the present invention; Figure 9 Schematic diagram of the structure of a spray system of an integrated fresh-air dehumidifier for underground space proposed by the present invention; Figure 10 Schematic diagram of the structure of a temperature and humidity monitoring system of an integrated fresh-air dehumidifier for underground space proposed by the present invention.

[0018] In the figure: 1. Installation box; 11. Evaporation chamber; 12. Water flow 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. Temperature regulating pipe; 25. Evaporator; 3. Heat exchange liquid circulation system; 31. Sealed diversion cover; 32. First diversion pipe; 33. First control valve; 34. Exhaust box; 35. Second diversion pipe; 36. Second control valve; 37. First heat exchange pipe; 4. Air intake box; 41. Air intake pipe; 42. Installation rack; 43. Fan; 44. Filter; 5. Spray system; 51. Water collection tank; 52. Water storage tank; 53. Drain pipe; 54. Third control valve; 6. Air exhaust box; 61. Air guide cover; 62. First air exhaust pipe; 63. Fourth control valve; 64. Second air exhaust pipe; 65. Shunt box; 66. Second heat exchange pipe; 67. Air gathering box; 68. Air guide pipe; 69. Fifth control valve. Detailed implementation manners

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying 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.

[0020] Embodiment: Refer to Figures 1-10, An integrated fresh air dehumidifier for underground space, including an installation box 1, an air inlet box 4 and an air outlet box 6 fixedly installed at both ends of the installation box 1. Among them, 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 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. A first partition chamber 15 and a second partition chamber 16 are arranged in the installation chamber 14. The tops of the first partition chamber 15 and the second partition chamber 16 are both communicated with the evaporation chamber 11. It also includes: an air conditioning system 2 arranged in the installation box 1 and an air inlet system arranged in the air inlet box 4. The air inlet system extracts external air and dehumidifies it through the low-temperature end of the air conditioning system 2; a temperature and humidity monitoring system that monitors the temperature and humidity inside the underground space, the temperature and humidity of the discharged 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 at the high-temperature end of the air conditioning system 2 and controls the heat exchange amount between the heat exchange liquid vapor, 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 spraying system 5 arranged in the air inlet box 4. The spraying 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 air outlet system arranged in the air outlet box 6. The air outlet system controls the temperature of the discharged air according to the data provided by the temperature and humidity monitoring system.

[0021] Among them, the temperature and humidity monitoring system includes an indoor temperature and humidity sensor for monitoring the indoor environment, a low-temperature monitoring sensor arranged at the liquid inlet end of the evaporator 25 in the air conditioning system 2, an outlet temperature and humidity monitoring sensor arranged in the air outlet system, and a controller that adjusts the flow rate of the control valve through the sensor data.

[0022] When the dehumidifier is in use, 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 air outlet, it controls the air flow, the air flow of the heat exchange liquid vapor, and the water spraying amount of the spraying system 5, so as to control the temperature and humidity of the air flow sprayed into the room, and keep the refrigerant inside the evaporator 25 in a certain low-temperature range, thus eliminating the need for defrosting during operation, preventing the surface temperature of the evaporator 25 from being too low and frosting, which affects the dehumidification effect. Furthermore, it keeps the temperature and humidity in the room within the optimal range, reduces the temperature and humidity fluctuations in the room, and at the same time can avoid the reciprocating start and stop of the compressor 21 in the air conditioning system 2, prevent the compressor 21 from being damaged, and avoid the metal fatigue and leakage of the evaporator 25 caused by the thermal exchange of the surface temperature of the evaporator 25, thereby extending the service life of the air conditioning system 2. In addition, the heat exchange liquid absorbs the heat of the condenser 22 and evaporates into steam to exchange heat with the refrigerant that has been expanded and cooled by the expansion valve 23 of the air conditioning system 2 to maintain the temperature range of the refrigerant entering the evaporator 25, thus eliminating the need for external energy (such as heating wire heating) for defrosting and reducing the defrosting energy consumption.

[0023] Reference Figures 2-6 and Figure 10 As shown in Figures 2-6 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 temperature control pipe 24 (preferably a heat exchange copper pipe) 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 temperature control pipe 24, and the evaporator 25 are connected in series in sequence to form a closed pipeline, and the refrigerant circulates inside the closed pipeline. The heat exchange liquid circulation system 3 includes a sealed flow guide cover 31 fixedly installed in the installation chamber 14. The condenser 22 is arranged below the sealed flow guide cover 31, and a heat exchange liquid (the heat exchange liquid can be ethylene glycol aqueous solution (PG25) or a fluorinated liquid. After using ethylene glycol aqueous solution (PG25) as the heat exchange liquid, nitrogen can be filled in the sealed channel of the heat exchange liquid circulation system 3 as a protective gas and the internal oxygen can be discharged) that submerges the condenser 22 is arranged below the sealed flow guide cover 31. The top of the sealed flow guide cover 31 is provided with a second flow channel for heat exchange with the temperature control pipe 24 and a first flow channel for heat exchange with low-temperature dry air. A drain pipe extending below the heat exchange liquid level is fixedly installed at the bottom of the liquefaction chamber 13; the first flow channel includes a first guide pipe 32 fixedly installed at the exhaust end of the sealed flow guide cover 31. A first control valve 33 is arranged on the first guide pipe 32. The output end of the first guide pipe 32 is fixedly installed with an exhaust box 34, and the top of the exhaust box 34 is communicated with the liquefaction chamber 13; the second flow channel includes a second guide pipe 35 fixedly installed at the exhaust end of the sealed flow guide cover 31. A second control valve 36 is arranged on the second guide pipe 35. The output end of the second guide pipe 35 is fixedly installed with a first heat exchange pipe 37. The first heat exchange pipe 37 is wound around the temperature control pipe 24. A heat insulation cover is fixedly installed in the evaporation chamber 11. Both the first heat exchange pipe 37 and the temperature control pipe 24 are arranged inside the heat insulation cover.

[0024] 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 temperature control pipe 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 inlet system in the evaporator 25 and is heated and vaporized, and then is compressed by the compressor 21 into a high-temperature and high-pressure gas and enters the condenser 22 to exchange heat with the heat exchange liquid and is cooled to form a high-pressure and medium-temperature liquid, and then passes through the expansion valve 23 and expands into a low-temperature and low-pressure liquid, and then is conducted to the evaporator 25 through the temperature control pipe 24 to exchange heat with the air flow.

[0025] During the process of refrigerant circulation, the heat exchange liquid is heated and vaporized through heat exchange with the refrigerant in the installation cavity 14 and the condenser 22, and then enters the sealed diversion cover 31. The first control valve 33 and the second control valve 36 are controlled to work according to the temperature data of 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.

[0026] When the external ambient temperature decreases, resulting in a decrease in the surface temperature of the evaporator 25 and when the monitored surface temperature of the evaporator 25 reaches the freezing point, the flow rate of the second control valve 36 increases, and the flow rate of the first control valve 33 decreases. At this time, the flow rate of the heat exchange liquid entering the first heat exchange tube 37 through the second diversion tube 35 is increased, and heat exchange is carried out between the first heat exchange tube 37 and the temperature adjustment tube 24 to increase the temperature of the refrigerant about to enter the interior of the evaporator 25, so that the refrigerant entering the interior of 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 cools and liquefies and is discharged into the liquefaction cavity 13, and then flows back into the heat exchange liquid in the installation cavity 14 through the drain pipe.

[0027] On the contrary, when the external ambient temperature increases, resulting in an increase in the temperature of the evaporator 25, the flow rate of the second control valve 36 can be reduced and the flow rate of the first control valve 33 can be increased, so as to reduce the temperature of the evaporator 25, so that the temperature of the evaporator 25 is always maintained within the normal working range, avoiding the temperature after dehumidification being too high or too low.

[0028] In the normal working state, the flow rates of the first control valve 33 and the second control valve 36 are controlled in a certain proportion to ensure the normal operation of the air conditioning system 2, thus ensuring the balance of the humidity and temperature of the indoor air, while avoiding frosting on the surface of the evaporator 25, and further preventing the compressor 21 from starting and stopping multiple times and preventing leakage due to multiple thermal expansions and contractions of the pipes of the evaporator 25.

[0029] Such as Figure 2 and Figure 3 As shown, the partitions between the flowing water cavity 12 and the liquefaction cavity 13 and the partitions between the liquefaction cavity 13 and the installation cavity 14 are both inclined, and if the two groups of partitions intersect, they can form a "<". Therefore, during the operation of the evaporator 25, the condensed water drips into the flowing water cavity 12 under the action of gravity and then flows obliquely downward under the guidance of the inclined plane, while the heat exchange liquid vapor exchanges heat with the condensed water through the heat conduction plate to reduce the temperature and re-liquefies and drips onto the bottom wall of the liquefaction cavity 13, and then flows back into the heat exchange liquid along the drain pipe.

[0030] In order to prevent the heat exchange liquid from flowing back inside the liquefaction cavity 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 cavity 13 and the flowing water cavity 12, so as to form a height difference to control the reflux of the liquefied heat exchange liquid.

[0031] Furthermore, in order to prevent the cooling capacity of the condensed water from being insufficient, an external water source or an external air source can also be connected to the flowing water cavity 12 to supplement the cooling capacity for the liquefaction of the heat exchange liquid.

[0032] Refer to Figure 2 、 Figure 4 、 Figure 8 and Figure 9 As shown in FIGS.

[0033] 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.

[0034] When the fan 43 works, a negative pressure is generated in the air inlet pipe 41, so as to extract external air filtered by the filter 44 and enter the evaporation chamber 11 to exchange heat and dehumidify with the refrigerant inside the evaporator 25.

[0035] During use, when the liquid level sensor inside the water storage tank 52 monitors that the condensed water in the water storage tank 52 reaches a preset threshold, the third control valve 54 is opened, and the adjustable spray head is adjusted to the drainage mode, so as to discharge the water in the water storage 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.

[0036] In addition, when the humidity in the room is too low, the third control valve 54 can be opened to adjust the adjustable spray head to the spray mode to spray the air filtered by the filter 44, increasing the humidity of the air entering the evaporation chamber 11. Without changing the dehumidification amount of the evaporator 25, the humidity of the air entering the room can be increased, so as to humidify the room.

[0037] Compared with the above embodiments, further, the cooling water in the water storage tank 52 can also be circulated into the flowing water chamber 12 through an electric siphon pump to exchange heat with the heat exchange liquid steam, ensuring the cold quantity required for the liquefaction of the heat exchange liquid steam. Additionally, an external water source can be connected to the water storage tank 52 to supplement water inside the water storage tank 52 with insufficient water volume.

[0038] Referring to Figure 2 、 Figure 4 、 Figure 5 、 Figure 8 、 Figure 9 and Figure 10 , the exhaust system includes a wind guide hood 61 fixedly installed in the exhaust box 6. The output end of the wind guide hood 61 is fixedly installed with a first exhaust pipe 62. A fourth control valve 63 is arranged on the first exhaust pipe 62. The exhaust system further includes a second heat exchange pipe 66 fixedly installed in the liquefaction chamber 13 in an array. Both ends of the second heat exchange pipe 66 are fixedly installed with a flow dividing box 65 and a gas gathering box 67 respectively. The input end of the gas gathering box 67 is communicated with the output end of the wind guide hood 61 through a second exhaust pipe 64. The output end of the gas gathering box 67 is fixedly installed with a wind guide pipe 68. The output end of the wind guide pipe 68 is connected to the first exhaust pipe 62. A fifth control valve 69 is arranged on the wind guide pipe 68.

[0039] During use, the ratio of the cold air flow to the hot air flow entering the first exhaust pipe 62 can be controlled by controlling the flow rate ratio of the fourth control valve 63 and the fifth control valve 69. By mixing two air flows at different temperatures, the temperature of the finally exhausted gas can be controlled, thereby controlling the temperature of the air flow discharged into the room in real time according to the indoor temperature.

[0040] Among them, the low-temperature air flow after cooling and dehumidification directly enters the first exhaust pipe 62 through the flow rate controlled by the fourth control valve 63. The flow rate passing through the fourth control valve 63, in cooperation with the air intake system, increases the air pressure inside the wind 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 flow dividing box 65 through the second exhaust pipe 64 and is divided into the second heat exchange pipe 66 to exchange heat with the heat exchange liquid steam, improving the liquefaction effect of the heat exchange liquid steam while increasing its own temperature. Then, it passes through the gas gathering box 67 and the wind guide pipe 68 and enters the first exhaust pipe 62 under the control of the fifth control valve 69 to be mixed with the low-temperature air flow, thereby adjusting the finally ejected temperature and controlling the temperature and humidity of the finally ejected air flow in cooperation with the spraying system 5.

[0041] 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 the problem of frosting, eliminating the need for defrosting shutdown, improving the dehumidification efficiency while reducing the start-stop of the compressor 21 and preventing large fluctuations in the temperature of the evaporator 25 itself, thereby extending the service life of the compressor 21 and preventing liquid leakage due to the thermal expansion and contraction of the evaporator 25.

[0042] The dehumidifier utilizes the waste heat generated during the refrigerant circulation process and the cold energy in the condensate water to reduce the energy consumption required for dehumidification.

[0043] The dehumidifier, in combination with the temperature and humidity monitoring system, the exhaust system, and the spraying system 5, can discharge airflows with various different humidities and temperatures to meet the fresh air requirements of indoor, underground warehouse and other storage facilities. In addition, by switching the spraying mode of the spraying system 5, backwashing of the filter 44 can be achieved, thereby preventing blockage of the filter 44.

[0044] The above are only the preferred embodiments of the present invention and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the technical content prompted above within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical 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, Further comprising: An air conditioning system (2) disposed in the installation box (1) and an air intake system disposed in the air intake box (4), the air intake system extracting external air to dehumidify through the low-temperature end of the air conditioning system (2); A temperature and humidity monitoring system for monitoring the temperature and humidity inside the underground space, the temperature and humidity of the discharged gas, and the temperature at the low-temperature end of the air conditioning system (2); A heat exchange liquid circulation system (3) disposed in the installation box (1), the heat exchange liquid circulation system (3) absorbing the heat at the high-temperature end of the air conditioning system (2) and controlling the heat exchange amount between the heat exchange liquid vapor, 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 spraying system (5) disposed in the air intake box (4), the spraying system (5) controlling the amount of water sprayed into the air intake system according to the data provided by the temperature and humidity monitoring system; An exhaust system disposed in the exhaust box (6), the exhaust system controlling the temperature of the exhaust according to the data provided by the temperature and humidity monitoring system.

2. The integrated fresh air dehumidifier for underground space according to claim 1, wherein, An evaporation chamber (11), a flowing water chamber (12), a liquefaction chamber (13), and an installation chamber (14) are sequentially arranged from top to bottom in the installation box (1). The bottom of the evaporation chamber (11) is communicated with the flowing water chamber (12). A heat conducting plate is fixedly installed on the partition between the flowing water chamber (12) and the liquefaction chamber (13). A first partition chamber (15) and a second partition chamber (16) are disposed in the installation chamber (14). The tops of the first partition chamber (15) and the second partition chamber (16) are both communicated with the evaporation chamber (11).

3. The integrated fresh air dehumidifier for underground space according to claim 2, characterized in that, 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 temperature regulating pipe (24) disposed in the evaporation chamber (11), and an expansion valve (23) disposed in the first partition chamber (15). The compressor (21), the condenser (22), the expansion valve (23), the temperature regulating pipe (24), and the evaporator (25) are sequentially connected in series to form a closed pipeline, and the refrigerant circulates inside the closed pipeline.

4. An integrated fresh air dehumidifier for underground space according to claim 3, characterized in that, The heat exchange liquid circulation system (3) includes a sealed diversion cover (31) fixedly installed in the installation chamber (14). The condenser (22) is disposed below the sealed diversion cover (31), and heat exchange liquid covering the condenser (22) is disposed below the sealed diversion cover (31). A second flow channel for heat exchange with the temperature regulating pipe (24) and a first flow channel for heat exchange with the low-temperature dry air are disposed at the top of the sealed diversion cover (31). A drain pipe extending below the heat exchange liquid level is fixedly installed at the bottom of the liquefaction chamber (13).

5. An integrated fresh air dehumidifier for underground space according to claim 4, characterized in that, The first flow channel includes a first diversion pipe (32) fixedly installed at the exhaust end of the sealed diversion cover (31). A first control valve (33) is disposed on the first diversion pipe (32). The output end of the first diversion pipe (32) is fixedly installed with an exhaust box (34). The top of the exhaust box (34) is communicated with the liquefaction chamber (13).

6. An integrated fresh air dehumidifier for underground space according to claim 4, characterized in that, The second flow channel includes a second guide pipe (35) fixedly installed at the exhaust end of the sealed guide cover (31). A second control valve (36) is provided on the second guide pipe (35). The output end of the second guide pipe (35) is fixedly installed with a first heat exchange pipe (37). The first heat exchange pipe (37) is wound around the temperature control pipe (24). A heat insulation cover is fixedly installed in the evaporation chamber (11). Both the first heat exchange pipe (37) and the temperature control pipe (24) are arranged within the heat insulation cover.

7. An integrated fresh air dehumidifier for underground space according to claim 2, characterized in that, 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). A filter (44) is fixedly installed at the air intake end of the air intake pipe (41). An installation frame (42) is fixedly installed in the evaporation chamber (11). A fan (43) is fixedly installed on the installation frame (42).

8. An integrated fresh air dehumidifier for underground space according to claim 7, characterized in that, The spraying system (5) includes a water storage tank (52) fixedly installed in the air intake box (4). A water collection tank (51) communicating with the flowing water chamber (12) is fixedly installed on the outer wall of the installation box (1). The output end of the water collection tank (51) extends into the water storage tank (52). The output end of the water storage tank (52) is fixedly installed with a drain pipe (53). 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).

9. The integrated fresh air dehumidifier for underground space according to claim 2, characterized in that, The exhaust system includes a wind guide cover (61) fixedly installed in the exhaust box (6). The output end of the wind guide cover (61) is fixedly installed with a first exhaust pipe (62). A fourth control valve (63) is provided on the first exhaust pipe (62).

10. An integrated fresh air dehumidifier for underground space according to claim 9, characterized in that, The exhaust system further includes a second heat exchange pipe (66) arranged and fixedly installed in the liquefaction chamber (13). The two ends of the second heat exchange pipe (66) are respectively fixedly installed with a flow dividing box (65) and a gas collecting box (67). The input end of the gas collecting box (67) is communicated with the output end of the wind guide cover (61) through a second exhaust pipe (64). The output end of the gas collecting box (67) is fixedly installed with a guide pipe (68). The output end of the guide pipe (68) is connected to the first exhaust pipe (62). A fifth control valve (69) is provided on the guide pipe (68).

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