A solution concentration system and solution concentration method based on high-temperature water source heat pump unit

Abstract

The present invention discloses a solution concentration system based on a high-temperature water source heat pump unit, which includes a high-temperature water source heat pump unit, a hot water circulation system, a solution dehydration system and an air circulation system; the solution dehydration system is used to concentrate a dilute solution into a concentrated solution, the hot water circulation system is used to provide heat for the solution dehydration system, the high-temperature water source heat pump unit is used to provide heat for the hot water circulation system, and the air circulation system is used to remove moisture from the dilute solution. The present invention also provides a solution concentration method using the solution concentration system as described above. The solution concentration system based on the high-temperature water source heat pump unit is energy-saving and efficient, is beneficial to environmental protection, and helps to reduce the energy consumption required for production and improve energy utilization efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial heat use, and in particular to a solution concentration system and a solution concentration method based on a high-temperature water source heat pump unit. Background Art

[0002] Heat pump units are one of the common industrial equipment in modern industry. In the solution concentration process, heat pumps are usually used to evaporate and concentrate the solution. However, since the heat conversion efficiency of heat pump units is usually not high, and the waste heat loss of the entire solution concentration heat pump unit is also high, a large amount of waste heat energy is not fully utilized and is wasted.

[0003] Therefore, a new technology is urgently needed to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a solution concentration system based on a high-temperature water source heat pump unit which can fully recover waste heat.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a solution concentration system based on a high-temperature water source heat pump unit.

[0006] In the first aspect, the present application provides a solution concentration system based on a high-temperature water source heat pump unit, characterized in that the solution concentration system based on the high-temperature water source heat pump unit comprises a high-temperature water source heat pump unit, a hot water circulation system, a solution dehydration system and an air circulation system. The solution dehydration system is used to concentrate a dilute solution into a concentrated solution, the hot water circulation system is used to provide heat for the solution dehydration system, the high-temperature water source heat pump unit is used to provide heat for the hot water circulation system, and the air circulation system is used to remove water from the dilute solution.

[0007] In one embodiment of the first aspect, the high-temperature water source heat pump unit includes a compressor, a condenser, a throttling device and an evaporator, and the compressor, the condenser, the throttling device and the evaporator are connected in sequence to form a fluid flow loop. The hot water circulation system includes a second heat exchanger and the condenser, the second heat exchanger includes a second heat release pipe and a second heating pipe, the condenser includes a condenser heat exchange pipe, and the condenser heat exchange pipe is connected to the second heat release pipe of the second heat exchanger to form a fluid loop. In this embodiment, the solution dehydration system includes a dilute solution source, a first heat exchanger, the second heat exchanger, a concentration tower and a concentrated solution collection device, wherein the first heat exchanger includes a first heat release pipe and a first heating pipe, and the concentration tower includes a dilute solution inlet, a concentrated solution outlet, a concentration tower air inlet and a concentration tower air outlet, wherein the dilute solution source, the first heating pipe, the second heating pipe, the dilute solution inlet, the concentrated solution outlet, the first heat release pipe and the concentrated solution collection device are connected in sequence to form a solution concentration passage. In this embodiment, the air circulation system includes the concentrating tower and the dehumidification device, the dehumidification device includes a box, a filter and a fan, the box is provided with a box air inlet and a box air outlet, the box air inlet is connected with the concentrating tower air outlet, the box air outlet is connected with the concentrating tower air inlet, the filter is arranged in the box near the box air inlet, the fan is arranged in the box near the box air outlet, the air outlet of the fan is connected with the box air outlet, and the evaporator is arranged in the box.

[0008] In an implementation manner of the first aspect, the air circulation system further includes a condensation water tank, and a drain port is provided at the bottom of the box body of the dehumidification device, and the drain port is communicated with the condensation water tank.

[0009] In one embodiment of the first aspect, the dehumidification device further includes a water collecting tray, which is arranged at the bottom of the box corresponding to the filter and the evaporator, and the water collecting tray includes a water outlet, and the water outlet of the water collecting tray is connected to the drain outlet at the bottom of the box.

[0010] In one embodiment of the first aspect, the concentrating tower further comprises a liquid blocking device comprising a through hole, wherein the liquid blocking device is connected to an inner wall of the concentrating tower and is arranged inside the concentrating tower near an air outlet of the concentrating tower.

[0011] In one embodiment of the first aspect, the solution dehydration system further comprises a first pump, which is disposed between the dilute solution source and the first heat exchanger and is used to input the dilute solution into the heating pipe of the first heat exchanger.

[0012] In one embodiment of the first aspect, the high-temperature water source heat pump unit also includes a third heat exchanger, the third heat exchanger includes a third heat release tube and a third heating tube, the drain outlet, the third heating tube of the third heat exchanger and the condensation water tank are connected in sequence to form a fluid passage, and the concentrated solution outlet of the concentration tower, the first heat release tube of the first heat exchanger, the third heat release tube of the third heat exchanger and the concentrated solution collection device are connected in sequence to form a fluid passage.

[0013] In one embodiment of the first aspect, the concentration tower further includes a dehumidification layer disposed therein.

[0014] In one embodiment of the first aspect, a temperature sensor is provided in the concentrating tower and / or the concentrated solution barrel, and a throttle valve is provided on the fluid passage between the concentrated solution outlet of the concentrating tower and the first heat release tube of the first heat exchanger, and / or on the fluid passage between the first heat release tube of the first heat exchanger and the concentrated solution barrel, and the throttle valve is connected to the temperature sensor.

[0015] In one embodiment of the first aspect, a liquid concentration sensor is provided in the concentrated solution barrel, the dilute solution barrel is connected with the concentrated solution barrel to form a secondary concentrated fluid passage, a second pump is provided on the secondary concentrated fluid passage, and the second pump is connected to the liquid concentration sensor.

[0016] In a second aspect, the present application provides a method for concentrating a solution using the solution concentration system based on a high-temperature water source heat pump unit as described in the first aspect, characterized in that the method comprises the following steps:

[0017] S1: Start the high-temperature water source heat pump unit to provide heat to the hot water circulation system and heat the hot working medium in the hot water circulation system;

[0018] S2: adding a dilute solution into the solution dehydration system through the first heating tube of the first heat exchanger, and collecting the obtained concentrated solution into a concentrated solution collecting device after being concentrated in the concentration tower;

[0019] Wherein, in step S2, the air circulation system is started at the same time, and cold air is discharged from the air outlet of the box and the filtering device, and enters the concentrating tower through the air inlet of the concentrating tower to further remove moisture from the dilute solution in the concentrating tower.

[0020] In one embodiment of the second aspect, the concentration tower further includes a dehumidification layer. In step S2, water in the dilute solution is removed through the dehumidification layer.

[0021] Compared with the prior art, the beneficial effect of the present application is that the solution concentration system based on the high-temperature water source heat pump unit makes full use of the waste heat in the heat pump unit by setting the first heat exchanger and the second heat exchanger. In addition, during the concentration process, the dilute solution can be concentrated by the dual dehydration effect of evaporation and dehumidification layer, and the concentration efficiency is high. Therefore, the solution concentration system based on the high-temperature water source heat pump unit is energy-saving and efficient, is beneficial to environmental protection, and helps to reduce the energy consumption required for production and improve energy utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a solution concentration system based on a high-temperature water source heat pump unit in an embodiment of the present invention.

[0023] The reference numerals and names in the figures are as follows:

[0024] 110. compressor; 120. condenser; 121. condenser heat exchange tube; 130. throttling device; 140. evaporator; 150. dilute solution barrel; 160. first pump; 170. concentration tower; 171. dilute solution inlet; 172. concentrated solution outlet; 173. concentration tower air inlet; 174. concentration tower air outlet; 175. liquid blocking device; 180. concentrated solution barrel; 190. first heat exchanger; 191. first heat release tube; 192. first heating tube; 200. second heat exchanger; 201. second heat release tube; 202. second heating tube; 210. dehumidification device; 211. cabinet; 2111. cabinet air inlet; 2112. cabinet air outlet; 2113. drain outlet; 212. filter; 213. fan; 214. water collecting tray; 220. condensate tank. DETAILED DESCRIPTION

[0025] Unless otherwise defined, technical or scientific terms used in the present specification and claims shall have the common meanings understood by persons having ordinary skills in the technical field to which the present invention belongs.

[0026] In the description of the present invention, it should be understood that the terms "center", "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 simplifying the description, 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.

[0027] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be connected, detachably connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The embodiment of the present application relates to a Figure 1 The solution concentration system based on the high temperature water source heat pump unit is shown.

[0031] exist Figure 1 In the illustrated embodiment, the solution concentration system based on the high-temperature water source heat pump unit includes a compressor 110, a condenser 120, a throttling device 130 and an evaporator 140. The compressor 110, the condenser 120, the throttling device 130 and the evaporator 140 are connected in sequence to form a refrigerant heat exchange circuit. In some embodiments, the refrigerant liquid circulates in the refrigerant heat exchange circuit. Specifically, the refrigerant liquid absorbs heat and evaporates into a superheated gas when flowing through the evaporator 140. Subsequently, the superheated gas enters the compressor 110 and is compressed into a high-temperature, high-pressure superheated gas, and flows into the condenser 120. In the condenser 120, the superheated gas cools down, condenses and releases heat to the outside, and condenses into a liquid refrigerant with a certain degree of supercooling. The liquid refrigerant with a certain degree of supercooling then enters the throttling device 130 to be cooled and depressurized to a two-phase refrigerant, and re-enters the evaporator 140 to continue absorbing heat.

[0032] The high-temperature water source heat pump unit also includes a weak solution barrel 150, a first pump 160, a concentrating tower 170, a concentrated solution barrel 180, a first heat exchanger 190, and a second heat exchanger 200. The concentrating tower 170 includes a weak solution inlet 171, a concentrated solution outlet 172, a concentrating tower air inlet 173, and a concentrating tower air outlet 174. The first heat exchanger 190 includes a first heat release pipe 191 and a first heating pipe 192. The second heat exchanger 200 includes a second heat release pipe 201 and a second heating pipe 202. The weak solution barrel 150, the first pump 160, the first heating pipe 192 of the first heat exchanger 190, the second heating pipe 202 of the second heat exchanger 200, and the weak solution inlet 171 of the concentrating tower 170 are connected in sequence to form a fluid passage, and the concentrated solution outlet 172 of the concentrating tower 170, the first heat release pipe 191 of the first heat exchanger 190, and the concentrated solution barrel 180 are connected in sequence to form a fluid passage.

[0033] In some embodiments, the first pump 160 drives the dilute solution in the dilute solution barrel 150 to flow into the first heating pipe 192 of the first heat exchanger 190 after passing through the first pump 160. The dilute solution absorbs the heat released by the first heat release pipe 191 of the first heat exchanger 190 and is heated. Subsequently, the dilute solution flows into the second heating pipe 202 of the second heat exchanger 200 and absorbs the heat released by the second heat release pipe 201 of the second heat exchanger 200 and is heated again to become a high-temperature dilute solution, and then enters the concentration tower 170 through the dilute solution inlet 171 of the concentration tower 170. The high-temperature dilute solution containing water is removed from the dehumidification layer in the concentration tower 170 to remove excess water, thereby forming a concentrated solution. Subsequently, the concentrated solution flows out from the concentrated solution outlet 172 of the concentration tower 170, flows through the first heat release pipe 191 of the first heat exchanger 190, and releases heat to the first heating pipe 192 of the first heat exchanger 190, thereby heating the fluid in the first heating pipe 192 of the first heat exchanger 190. In some embodiments, the dilute solution in the second heating tube 202 of the second heat exchanger 200 is heated. Finally, the concentrated solution flows into the concentrated solution tank 180.

[0034] In some specific embodiments, the dilute solution at room temperature is heated to about 50 degrees Celsius through the first heating tube 192 of the first heat exchanger 190, and then heated to about 85 degrees Celsius through the second heating tube 202 of the second heat exchanger 200. Subsequently, the dilute solution at about 85 degrees Celsius enters the concentration tower 170 and is dehumidified and cooled to become a concentrated solution at about 60 to 70 degrees Celsius. The concentrated solution at about 60 to 70 degrees Celsius is cooled to about 30 degrees Celsius after passing through the first heat release tube 191 of the first heat exchanger 190, and finally enters the concentrated solution barrel.

[0035] A condenser heat exchange tube 121 is further provided in the condenser 120, and the condenser heat exchange tube 121 is connected to the second heat release tube 201 of the second heat exchanger 200 to form a fluid loop. In some embodiments, the medium in the condenser heat exchange tube 121 can absorb the heat released by the refrigerant liquid in the condenser 120 and be heated, and then release the heat to the outside when flowing through the second heat release tube 201 of the second heat exchanger 200, thereby heating the fluid in the second heating tube 202 of the second heat exchanger 200. In some embodiments, that is, the dilute solution in the second heating tube 202 of the second heat exchanger 200 is heated. In some embodiments, the medium in the condenser heat exchange tube 121, that is, water, is heated to about 90 degrees Celsius in the condenser heat exchange tube 121, then enters the second heat release tube 201 of the second heat exchanger 200, cools to about 80 degrees Celsius, and circulates to the condenser heat exchange tube 121 again.

[0036] The high-temperature water source heat pump unit further includes a dehumidifier 210, which includes a housing 211, a filter 212, and a fan 213. The housing 211 is provided with a housing air inlet 2111 and a housing air outlet 2112, the housing air inlet 2111 is connected to the concentration tower air outlet 174, the housing air outlet 2112 is connected to the concentration tower air inlet 173, the filter 212 is arranged in the housing 211 near the housing air inlet 2111, the fan 213 is arranged in the housing 211 near the housing air outlet 2112, the air outlet of the fan 213 is connected to the housing air outlet 2112, and the evaporator 140 is arranged in the housing 211.

[0037] In some embodiments, the low-temperature and low-humidity air blown out from the air outlet of the fan 213 flows into the air inlet 173 of the concentrating tower through the air outlet 2112 of the box. Subsequently, the low-temperature and low-humidity air exchanges heat with the dilute solution when flowing through the dehumidification layer inside the concentrating tower 170, and takes away the water in the dilute solution to become hot and humid air. The hot and humid air flows through the air outlet 174 of the concentrating tower and enters the dehumidifying device 210 through the air inlet 2111 of the box. The hot and humid air flows through the filter 212 near the air inlet in the box 211, and impurities in the air are filtered. Subsequently, the filtered hot and humid air flows through the evaporator 140 in the box 211 for heat exchange, thereby forming liquefied water vapor and low-temperature and low-humidity air. The low-temperature and low-humidity air enters the next cycle through the fan 213. In a specific embodiment, low-temperature and low-humidity air at about 15 degrees Celsius flows into the concentration tower air inlet 173 through the air outlet of the fan 213 and the box air outlet 2112, and exchanges heat with the dilute solution in the dehumidification layer inside the concentration tower 170 to become humid hot air at about 50 degrees Celsius.

[0038] In some embodiments, the concentrating tower 170 further includes a liquid blocking device 175 including a through hole, the liquid blocking device 175 is connected to the inner wall of the concentrating tower 170, and is disposed inside the concentrating tower 170 near the concentrating tower air outlet 174. The liquid blocking device 175 can be used to prevent the solution in the concentrating tower 170 from entering the dehumidification device 210 in large quantities along with the air, thereby reducing the loss of the solution.

[0039] In some embodiments, the high-temperature water source heat pump unit includes a condensed water tank 220, and a drain port 2113 is provided at the bottom of the housing 211 of the dehumidification device 210, and the drain port 2113 is connected to the condensed water tank 220. The filtered hot and humid air flows through the evaporator 140 in the housing 211 for heat exchange to form liquefied water vapor, which can flow into the condensed water tank 220 through the drain port 2113.

[0040] In some embodiments, the dehumidification device 210 further includes a water collecting pan 214, which is disposed at the bottom of the housing 211 corresponding to the filter 212 and the evaporator 140, and the water collecting pan 214 includes a water outlet, and the water outlet of the water collecting pan 214 is connected to the drain port 2113 at the bottom of the housing 211. The water collecting pan 214 can help collect liquefied water vapor and send the liquefied water vapor to the condensed water tank 220.

[0041] In some embodiments, the high-temperature water source heat pump unit further includes a third heat exchanger, the third heat exchanger includes a third heat release pipe and a third heating pipe, the drain port 2113, the third heating pipe of the third heat exchanger and the condensed water tank 220 are sequentially connected to form a fluid passage, and the concentrated solution outlet 172 of the concentration tower 170, the first heat release pipe 191 of the first heat exchanger 190, the third heat release pipe of the third heat exchanger and the concentrated solution barrel 180 are sequentially connected to form a fluid passage. In some embodiments, the concentrated solution is still overheated after releasing heat through the first heat release pipe 191 of the first heat exchanger 190. At this time, the concentrated solution can further release heat in the third heat release pipe of the third heat exchanger, thereby reducing the temperature to the target temperature. This part of the heat is absorbed by the liquefied water vapor in the third heating pipe of the third heat exchanger.

[0042] In some embodiments, a temperature sensor is provided in the concentrating tower 170 and / or the concentrated solution barrel 180, and a throttle valve is provided on the fluid passage between the concentrated solution outlet 172 of the concentrating tower 170 and the first heat release pipe 191 of the first heat exchanger 190, and / or on the fluid passage between the first heat release pipe 191 of the first heat exchanger 190 and the concentrated solution barrel 180, and the throttle valve is connected to the temperature sensor. The temperature sensor can be used to measure the temperature in the concentrating tower 170 and / or the concentrated solution barrel 180. By providing the throttle valve and the temperature sensor, and connecting the throttle valve to the temperature sensor, the opening of the throttle valve can be controlled according to the temperature in the concentrating tower 170 and / or the concentrated solution barrel 180 measured by the temperature sensor. Thereby, the heat release of the concentrated solution in the first heat release pipe 191 of the first heat exchanger 190 is controlled.

[0043] In some embodiments, a liquid concentration sensor is provided in the concentrated solution barrel 180, the weak solution barrel 150 is connected to the concentrated solution barrel 180 to form a secondary concentrated fluid passage, a second pump is provided on the secondary concentrated fluid passage, and the second pump is connected to the liquid concentration sensor. The liquid concentration sensor can be used to measure the concentration of the concentrated solution in the concentrated solution barrel 180. If the concentration of the concentrated solution in the concentrated solution barrel 180 does not meet the standard, the concentrated solution in the concentrated solution barrel 180 can be driven by the second pump to enter the concentrating tower 170 again for re-concentration.

[0044] In one embodiment, the process flow for concentrating aqueous solution of the solution concentration system based on the high-temperature water source heat pump unit described herein is as follows:

[0045] First, the high-temperature hot water of the high-temperature water source heat pump unit at 90°C enters the second heat exchanger 2 and its temperature drops to 80°C, and the heat pump circulates and heats it;

[0046] Secondly, the dilute solution at room temperature is preheated to about 50°C by the first heat exchanger and then enters the second heat exchanger to exchange heat with the 90°C hot water supplied by the heat pump, becoming a high-temperature solution of about 85°C and entering the upper part of the concentration tower;

[0047] Next, the 85℃ high-temperature solution is cooled and dehumidified in the dehumidification layer to obtain a 60℃-70℃ concentrated solution which enters the first heat exchanger for heat exchange and is cooled to about 30℃ and collected in a concentrated solution barrel, where moisture is adsorbed by the dehumidification layer.

[0048] At the same time, the low-temperature dry air at about 15°C entering from the lower part of the dehumidification layer of the concentrating tower exchanges heat with the dilute solution to increase its temperature when passing through the dehumidification layer, and takes away the water vapor, becoming humid hot air at about 50°C and entering the air intake of the air source heat pump unit through the top of the concentrating tower to exchange heat with the evaporator. After the hot air is cooled, the water vapor condenses and is collected, and the cold dry air enters the next cycle from the lower part of the concentrating tower.

[0049] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A solution concentration system based on a high-temperature water source heat pump unit, characterized in that: The solution concentration system based on the high-temperature water source heat pump unit includes a high-temperature water source heat pump unit, a hot water circulation system, a solution dehydration system and an air circulation system; The solution dehydration system is used to concentrate a dilute solution into a concentrated solution, the hot water circulation system is used to provide heat for the solution dehydration system, the high-temperature water source heat pump unit is used to provide heat for the hot water circulation system, and the air circulation system is used to remove moisture from the dilute solution; The high-temperature water source heat pump unit comprises a compressor, a condenser, a throttling device and an evaporator, wherein the compressor, the condenser, the throttling device and the evaporator are sequentially connected to form a fluid flow loop; The hot water circulation system comprises a second heat exchanger and the condenser, the second heat exchanger comprises a second heat release tube and a second heating tube, the condenser comprises a condenser heat exchange tube, the condenser heat exchange tube is connected with the second heat release tube of the second heat exchanger to form a fluid loop; The solution dehydration system comprises a dilute solution source, a first heat exchanger, a second heat exchanger, a concentration tower and a concentrated solution collecting device, wherein the first heat exchanger comprises a first heat release pipe and a first heating pipe, the concentration tower comprises a dilute solution inlet, a concentrated solution outlet, a concentration tower air inlet and a concentration tower air outlet, wherein the dilute solution source, the first heating pipe, the second heating pipe, the dilute solution inlet, the concentrated solution outlet, the first heat release pipe and the concentrated solution collecting device are sequentially connected to form a solution concentration passage; The air circulation system comprises the concentration tower and the dehumidification device, the dehumidification device comprises a box, a filter and a fan, the box is provided with a box air inlet and a box air outlet, the box air inlet is communicated with the concentration tower air outlet, the box air outlet is communicated with the concentration tower air inlet, the filter is arranged in the box near the box air inlet, the fan is arranged in the box near the box air outlet, the air outlet of the fan is connected with the box air outlet, and the evaporator is arranged in the box; A temperature sensor is arranged in the concentrating tower and / or the concentrated solution collecting device, and a throttle valve is arranged on the fluid passage between the concentrated solution outlet of the concentrating tower and the first heat release tube of the first heat exchanger and / or on the fluid passage between the first heat release tube of the first heat exchanger and the concentrated solution collecting device, and the throttle valve is connected to the temperature sensor.

2. The solution concentration system based on the high-temperature water source heat pump unit according to claim 1, characterized in that: The air circulation system further comprises a condensation water tank. A drain port is arranged at the bottom of the housing of the dehumidification device, and the drain port is communicated with the condensation water tank.

3. The solution concentration system based on the high-temperature water source heat pump unit according to claim 2, characterized in that: The dehumidification device further includes a water collecting tray, which is arranged at the bottom of the box body corresponding to the filter and the evaporator. The water collecting tray includes a water outlet, and the water outlet of the water collecting tray is connected to the drain outlet at the bottom of the box body.

4. The solution concentration system based on a high-temperature water source heat pump unit according to any one of claims 1 to 3, characterized in that: The concentration tower further comprises a liquid blocking device including a through hole, wherein the liquid blocking device is connected to the inner wall of the concentration tower and is arranged inside the concentration tower near the air outlet of the concentration tower.

5. The solution concentration system based on a high-temperature water source heat pump unit according to any one of claims 1 to 3, characterized in that: The solution dehydration system further comprises a first pump, which is disposed between the dilute solution source and the first heat exchanger and is used for inputting the dilute solution into the heating pipe of the first heat exchanger.

6. The solution concentration system based on a high-temperature water source heat pump unit according to any one of claims 1 to 3, characterized in that: The concentration tower further includes a dehumidification layer arranged inside the concentration tower.

7. The solution concentration system based on the high-temperature water source heat pump unit according to claim 2, characterized in that: The high-temperature water source heat pump unit also includes a third heat exchanger, which includes a third heat release tube and a third heating tube. The drain outlet, the third heating tube of the third heat exchanger and the condensing water tank are connected in sequence to form a fluid passage. The concentrated solution outlet of the concentration tower, the first heat release tube of the first heat exchanger, the third heat release tube of the third heat exchanger and the concentrated solution collecting device are connected in sequence to form a fluid passage.

8. A method for concentrating a solution using the solution concentration system based on a high-temperature water source heat pump unit according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: S1: Start the high-temperature water source heat pump unit to provide heat to the hot water circulation system and heat the hot working medium in the hot water circulation system; S2: adding a dilute solution into the solution dehydration system through the first heating tube of the first heat exchanger, and collecting the obtained concentrated solution into a concentrated solution collecting device after being concentrated in the concentration tower; Wherein, in step S2, the air circulation system is started at the same time, and cold air is discharged from the air outlet of the box and the filter, and enters the concentration tower through the air inlet of the concentration tower to further remove moisture from the dilute solution in the concentration tower.

9. The method according to claim 8, characterized in that The concentration tower further includes a dehumidification layer. In step S2, water in the dilute solution is removed through the dehumidification layer.

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