Refrigerating and heating integrated unit
By introducing a cooling water circulation component into the integrated refrigeration and heating unit, and utilizing water cooling and air cooling exchange technologies, the problem of poor cooling performance under high-temperature environments has been solved, achieving efficient cooling and improved economic benefits.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-07
- Publication Date
- 2026-05-15
AI Technical Summary
Existing integrated refrigeration and heating equipment has insufficient cooling effect in high-temperature environments, and the condenser cannot effectively cool down, resulting in a decline in equipment performance.
A cooling water circulation assembly is adopted, which forms a cooling water circuit with components such as a shell-and-tube heat exchanger, cooling water pump, and cooler. The refrigerant is cooled by water cooling and heat is exchanged with the air through an air-cooled heat exchanger to improve the cooling effect.
It significantly improves the cooling effect in high-temperature environments, resulting in obvious economic benefits. The cooling water and air exchange heat fully to reduce the temperature, ensuring effective cooling of the refrigerant and improving the performance of the unit.
Smart Images
Figure CN224246481U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of liquid refrigeration and heating system technology, and in particular to an integrated refrigeration and heating unit. Background Technology
[0002] Currently, various integrated cooling and heating units exist on the market, featuring both cooling and heating modes to cool or heat air or liquids. However, the current design of these units is not optimal. Typically, in cooling mode, only two heat exchangers function as condensers, and these are mostly air-cooled. When the ambient temperature is too high, the condensers cannot effectively cool the refrigerant, resulting in insufficient cooling performance at the terminal. This demonstrates the significant impact of ambient temperature on the equipment, thus necessitating the design of a more efficient integrated cooling and heating unit. Utility Model Content
[0003] Therefore, the purpose of this utility model is to overcome the shortcomings of the prior art and provide an integrated cooling and heating unit.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A combined cooling and heating unit, comprising:
[0006] The cabinet and the refrigerant circulation assembly and cooling water circulation assembly disposed within the cabinet;
[0007] The refrigerant circulation assembly includes a compressor, an oil-gas separator, a four-way valve, a plate heat exchanger, a shell-and-tube heat exchanger, an air-cooled heat exchanger, a saturated humidity heat exchanger, and a gas-liquid separator, all connected by pipelines. The compressor's exhaust port is connected to the oil-gas separator's inlet port; the oil-gas separator's outlet port is connected to the first port of the four-way valve; the oil outlet port of the oil-gas separator is connected to the compressor's oil filler port; and the fourth port of the four-way valve is connected sequentially to the four-way valve via the refrigerant channels of the plate heat exchanger, the shell-and-tube heat exchanger, the air-cooled heat exchanger, and the saturated humidity heat exchanger. The second port of the four-way valve is connected to the suction port of the compressor through the gas-liquid separator. The pipeline between the plate heat exchanger and the shell-and-tube heat exchanger is provided with a first one-way valve and a refrigeration expansion valve connected in parallel. The outlet of the first one-way valve is connected to the shell-and-tube heat exchanger. The pipeline between the shell-and-tube heat exchanger and the air-cooled heat exchanger is provided with a second one-way valve and a heating expansion valve connected in parallel. The outlet of the second one-way valve is connected to the shell-and-tube heat exchanger. The third port of the four-way valve is also connected to the pipeline between the plate heat exchanger and the refrigeration expansion valve through a heating enthalpy-increasing valve.
[0008] The cooling water circulation assembly includes a cooler, a water distributor, a water tank, and a cooling water pump. The cooler includes an inlet at the top and an outlet at the bottom. The water distributor is located at the inlet. The cooler is used to exchange heat between the flowing cooling water and the air. The water tank is located at the bottom of the cooler and is used to receive the cooling water flowing out from the outlet of the cooler. The water tank is connected to the input end of the cooling water pump. The output end of the cooling water pump is connected to the water distributor through the cooling water flow channel of the shell-and-tube heat exchanger. The cooling water exchanges heat with the refrigerant in the refrigerant flow channel within the cooling water flow channel.
[0009] The cabinet is equipped with a cooling water supply valve, a cooling water drain valve, a hot water inlet, and a hot water outlet. The cooling water supply valve and the cooling water drain valve are connected to the water tank. The hot water inlet is connected to the water inlet of the plate heat exchanger, and the hot water outlet is connected to the water outlet of the plate heat exchanger.
[0010] As can be seen from the above technical solution, the integrated cooling and heating unit of this application, by setting up a cooling water circulation component, effectively cools the refrigerant in the shell-and-tube heat exchanger through water cooling when in cooling mode, which greatly improves the cooling effect, can adapt to high temperature environment, and has obvious economic benefits. In addition, the cooling water circulation component is equipped with a cooler to cool the cooling water. The cooler can fully exchange heat between the cooling water and the air, thereby reducing the temperature of the cooling water and ensuring effective cooling of the refrigerant.
[0011] In one embodiment, a heat exchange chamber is formed inside the cabinet, a first air inlet and a second air inlet are provided on the side of the cabinet, and an air outlet is provided on the top of the cabinet. The first air inlet, the second air inlet and the air outlet are connected to the heat exchange chamber. A fan is arranged at the air outlet, a cooler is arranged at the first air inlet, and an air-cooled heat exchanger is arranged at the second air inlet.
[0012] In one embodiment, the cooler includes a frame, a plurality of first flow plates and a plurality of second flow plates. The plurality of first flow plates and the plurality of second flow plates are alternately arranged in the frame in a vertical direction. The plurality of first flow plates and the plurality of second flow plates together form a cooling channel, which is in communication with the outside air. The first flow plates and the second flow plates are both inclined to the horizontal plane, and the inclination directions of the first flow plates and the second flow plates are opposite.
[0013] In one embodiment, one side of the frame is the air inlet side and the other side is the air outlet side. Along the direction from the air inlet side to the air outlet side, the first water flow plate is inclined in a way that gradually extends downwards, and the second water flow plate is inclined in a way that gradually extends upwards. Water-blocking strips are provided on the lower edge of both the first water flow plate and the lower edge of the second water flow plate.
[0014] In one embodiment, both the first and second flow plates are provided with multiple drip holes along their respective length directions.
[0015] In one embodiment, the shell-and-tube heat exchanger includes a first tube and a second tube sleeved outside the first tube. The cooling water flow channel is formed inside the first tube, and the refrigerant flow channel is formed between the inner wall of the second tube and the outer wall of the first tube.
[0016] In one embodiment, the saturated humidity heat exchanger is positioned above the water tank.
[0017] In one embodiment, a flow switch is connected in series between the cooling water pump and the shell-and-tube heat exchanger.
[0018] In one embodiment, the outlet of the oil-gas separator is also connected to the pipeline between the third port of the four-way valve and the gas-liquid separator via an unloading valve.
[0019] In one embodiment, a first filter is connected in series in the pipeline between the refrigeration expansion valve and the shell-and-tube heat exchanger, and a second filter is connected in series in the pipeline between the heating expansion valve and the shell-and-tube heat exchanger.
[0020] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the integrated cooling and heating unit in the embodiments of this application;
[0022] Figure 2 This is a schematic diagram of the component connections of the integrated refrigeration and heating unit in the embodiments of this application;
[0023] Figure 3 This is a schematic diagram of component connections in the heating mode of the integrated cooling and heating unit in the embodiments of this application;
[0024] Figure 4 This is a schematic diagram of component connections in the cooling mode of the integrated cooling and heating unit in the embodiments of this application;
[0025] Figure 5 This is a schematic diagram of the cooler structure in an embodiment of this application;
[0026] Figure 6 This is a schematic diagram of the structure of the first flow plate in the embodiment of this application;
[0027] Explanation of reference numerals in the attached figures:
[0028] 11. Cabinet; 111. Cooling water inlet valve; 112. Cooling water drain valve; 113. Hot water inlet; 114. Hot water outlet; 115. Heat exchange chamber; 116. First air inlet; 117. Second air inlet; 118. Fan; 21. Compressor; 211. Exhaust port; 212. Oil inlet; 213. Suction port; 22. Oil-gas separator; 221. Air inlet; 222. Air outlet; 223. Oil outlet; 224. Unloading valve; 23. Four-way valve; 231. First port; 232. Second port; 233. Third port; 234. Fourth port; 24. Plate heat exchanger; 241. Third refrigerant port; 242. Fourth refrigerant port; 243. Water inlet; 244. Water outlet; 25. Set Tubular heat exchanger; 251, First refrigerant port; 252, Second refrigerant port; 253, First cooling water port; 254, Second cooling water port; 261, Air-cooled heat exchanger; 262, Saturated humidity heat exchanger; 271, Gas-liquid separator; 281, First check valve; 282, Second check valve; 291, Refrigeration expansion valve; 292, Heating expansion valve; 293, First filter; 294, Second filter; 295, Heating enthalpy-increasing valve; 31, Cooler; 311, Frame; 312, First water flow plate; 313, Second water flow plate; 314, Air inlet side; 315, Air outlet side; 316, Water baffle; 317, Drip hole; 32, Water distributor; 33, Water tank; 34, Cooling water pump; 341, Water flow switch. Detailed Implementation
[0029] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention.
[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this utility model.
[0031] Please see Figures 1 to 6 This embodiment provides a cooling and heating integrated unit, including: a cabinet 11 and a refrigerant circulation component and a cooling water circulation component disposed in the cabinet 11.
[0032] The refrigerant circulation assembly forms a refrigerant loop. Specifically, the refrigerant circulation assembly includes a compressor 21, an oil-gas separator 22, a four-way valve 23, a plate heat exchanger 24, a shell-and-tube heat exchanger 25, an air-cooled heat exchanger 261, a saturated humidity heat exchanger 262, and a gas-liquid separator 271, which are connected by pipelines.
[0033] The compressor 21's exhaust port 211 is connected to the oil-gas separator 22's inlet port 221. The oil-gas separator 22's outlet port 222 is connected to the first port 231 of the four-way valve 23. The oil outlet port 223 of the oil-gas separator 22 is connected to the compressor 21's oil replenishment port 212. The shell-and-tube heat exchanger 25 has a refrigerant flow channel and a cooling water flow channel, allowing the refrigerant and cooling water to exchange heat within the shell-and-tube heat exchanger 25. The refrigerant flow channel has a first refrigerant port 251 and a second refrigerant port 252, and the cooling water flow channel has a first cooling water port 253 and a second cooling water port 254. The fourth port 234 of the four-way valve 23 is connected to the second port 231 of the four-way valve 23 via the plate heat exchanger 24, the refrigerant flow channel of the shell-and-tube heat exchanger 25, the air-cooled heat exchanger 261, and the saturated humidity heat exchanger 262. 32. The third port 233 of the four-way valve 23 is connected to the suction port 213 of the compressor 21 through the gas-liquid separator 271. The pipeline between the first refrigerant port 251 of the plate heat exchanger 24 and the shell-and-tube heat exchanger 25 is provided with a first one-way valve 281 and a refrigeration expansion valve 291 connected in parallel. The outlet of the first one-way valve 281 is connected to the first refrigerant port 251 of the shell-and-tube heat exchanger 25. The pipeline between the second refrigerant port 252 of the shell-and-tube heat exchanger 25 and the air-cooled heat exchanger 261 is provided with a second one-way valve 282 and a heating expansion valve 292 connected in parallel. The outlet of the second one-way valve 282 is connected to the second refrigerant port 252 of the shell-and-tube heat exchanger 25. The third port 233 of the four-way valve 23 is also connected to the pipeline between the plate heat exchanger 24 and the refrigeration expansion valve 291 through a heating enthalpy-increasing valve 295.
[0034] The cooling water circulation assembly forms a cooling water loop. The cooling water circulation assembly can exchange heat with the refrigerant in the refrigerant circulation assembly through the shell-and-tube heat exchanger 25, thereby cooling and liquefying the refrigerant. Specifically, the cooling water circulation assembly includes a cooler 31, a water distributor 32, a water tank 33, and a cooling water pump 34. The cooler 31 includes an inlet end at the top and an outlet end at the bottom. The inlet end is equipped with a water distributor 32, which distributes the cooling water entering the cooler 31 evenly across the inlet end. The cooler 31 facilitates heat exchange between the flowing cooling water and the air, ensuring the cooling water is fully cooled by the air. The water tank 33 is located in… The bottom of the cooler 31 is used to receive the cooling water (cooled water) flowing out from the outlet of the cooler 31. The water tank 33 is connected to the input end of the cooling water pump 34. The output end of the cooling water pump 34 is connected to the water distributor 32 after passing through the cooling water flow channel of the shell-and-tube heat exchanger 25. The cooling water exchanges heat with the refrigerant in the refrigerant flow channel in the cooling water flow channel. When the cooling water pump 34 is started, the cooling water is transported. The cooling water is output from the output end of the cooling water pump 34 and flows back to the input end of the cooling water pump 34 after passing through the cooling water flow channel of the shell-and-tube heat exchanger 25, the water distributor 32, the inlet end of the cooler 31, the interior of the cooler 31, the outlet end of the cooler 31 and the water tank 33 in sequence.
[0035] In this embodiment, the cabinet 11 is equipped with a cooling water supply valve 111, a cooling water drain valve 112, a hot water inlet 113, and a hot water outlet 114. The cooling water supply valve 111 and the cooling water drain valve 112 are connected to the water tank 33, so that cooling water can be supplied through the cooling water supply valve 111 and discharged through the cooling water drain valve 112. The plate heat exchanger 24 has a third refrigerant port 241, a fourth refrigerant port 242, a water inlet 243, and a water outlet 244. The hot water inlet 113 is connected to the water inlet 243 of the plate heat exchanger 24, and the hot water outlet 114 is connected to the water outlet 244 of the plate heat exchanger 24. So that when the integrated cooling and heating unit is applied to the terminal, the external liquid to be heated or cooled can be introduced into the plate heat exchanger 24 through the hot water inlet 113, so that the liquid is heated or cooled, and finally the heated or cooled liquid is discharged from the hot water outlet 114. A hot and cold water pump is also installed between the hot water outlet and the water outlet, which can quickly discharge the liquid.
[0036] This embodiment of the integrated cooling and heating unit, by setting the above-mentioned components, can realize two working modes: cooling mode and heating mode, and its working process is as follows:
[0037] Cooling mode: Saturated humidity heat exchanger 262 and air-cooled heat exchanger 261 are used as condensers, plate heat exchanger 24 is used as an evaporator, heating expansion valve 292, heating enthalpy increase valve 295, first one-way valve 281, cooling water drain valve 112 and cooling water supply valve 111 are in the closed state, the first port 231 and the second port 232 of four-way valve 23 are connected, the third port 233 and the fourth port 234 of four-way valve 23 are connected, and other components are in the open state; at this time, the refrigerant path is: compressor 21 exhaust port 211, oil-gas separator 22 inlet port 221, oil-gas separator 22 outlet port 222, and four-way valve 23 from the first port 231 to the second port 232. The components include a saturated humidity heat exchanger 262, an air-cooled heat exchanger 261, a second one-way valve 282, a refrigerant flow path for a shell-and-tube heat exchanger 25, a refrigeration expansion valve 291, a third refrigerant port 241 for a plate heat exchanger 24, a fourth refrigerant port 242 for a plate heat exchanger 24, a four-way valve 23 from its fourth port 234 to its third port 233, a gas-liquid separator 271, and a suction port 213 for a compressor 21. The cooling water path is as follows: the output end of a cooling water pump 34, the first cooling water port 253 of a shell-and-tube heat exchanger 25, the second cooling water port 254 of a shell-and-tube heat exchanger 25, a water distributor 32, the inlet end of a cooler 31, the outlet end of a cooler 31, a water tank 33, and the input end of a cooling water pump 34.
[0038] Heating mode: Saturated humidity heat exchanger 262 and air-cooled heat exchanger 261 are used as evaporators, plate heat exchanger 24 is used as a condenser, refrigeration expansion valve 291, second one-way valve 282, cooling water drain valve 112, cooling water supply valve 111 and cooling water pump 34 are in the closed state, the first port 231 and the fourth port 234 of four-way valve 23 are connected, the second port 232 and the third port 233 of four-way valve 23 are connected, and other components are in the open state; at this time, the refrigerant path is: compressor 21 exhaust port 211, oil-gas separator 22 inlet port 221, oil-gas... The separator 22 has an outlet 222, the four-way valve 23 has a first port 231 to a fourth port 234, the plate heat exchanger 24 has a fourth refrigerant port 242, the plate heat exchanger 24 has a third refrigerant port 241, the first check valve 281, the refrigerant flow channel of the shell-and-tube heat exchanger 25, the heating expansion valve 292, the air-cooled heat exchanger 261, the saturated humidity heat exchanger 262, the four-way valve 23 has a second port 232 to a third port 233, the gas-liquid separator 271, and the compressor 21 has an intake port 213; the cooling water no longer flows, and the heating enthalpy increase valve 295 can adjust the refrigerant flow rate according to the temperature.
[0039] As can be seen from the above technical solution, the integrated cooling and heating unit of this application, by setting up a cooling water circulation component, effectively cools the refrigerant in the shell-and-tube heat exchanger 25 through water cooling when in cooling mode, which greatly improves the cooling effect, can adapt to high temperature environment, and has obvious economic benefits. In addition, the cooling water circulation component is equipped with a cooler 31 for cooling the cooling water. The cooler 31 can fully exchange heat between the cooling water and the air, thereby reducing the temperature of the cooling water and ensuring effective cooling of the refrigerant.
[0040] To ensure efficient operation of the unit, preferably, the cabinet 11 in this embodiment has a rectangular structure, with a heat exchange chamber 115 formed inside. The sides of the cabinet 11 are provided with opposing first air inlets 116 and second air inlets 117, and the top of the cabinet 11 is provided with an air outlet. The first air inlet 116, the second air inlet 117, and the air outlet are connected to the heat exchange chamber 115. A fan 118 is arranged at the air outlet, a cooler 31 is arranged at the first air inlet 116, and an air-cooled heat exchanger 261 is arranged at the second air inlet 117. Thus, by turning on the fan 118, air can pass through the cooler 31 and the air-cooled heat exchanger 261 before being discharged from the air outlet. In cooling mode, this significantly reduces the temperature of the cooling water and the refrigerant, resulting in higher cooling efficiency for the unit.
[0041] Preferably, in this embodiment, the cooler 31 includes a frame 311, a plurality of first flow plates 312 and a plurality of second flow plates 313. The frame 311 is a rectangular frame 311, with one side of the frame 311 being an air inlet side 314 and the other side being an air outlet side 315. The plurality of first flow plates 312 and the plurality of second flow plates 313 are arranged alternately in the frame 311 in a vertical direction. The plurality of first flow plates 312 and the plurality of second flow plates 313 together form a cooling channel. The cooling channel is connected to the outside air. That is to say, when the air enters from the air inlet side 314 of the frame 311 and exits from the air outlet side 315, it can fully exchange heat with the cooling water in the cooling channel, so that the cooling water is effectively cooled. The first flow plate 312 and the second flow plate 313 are both inclined to the horizontal plane, and their inclination directions are opposite. Thus, cooling water can continuously flow from the first flow plate 312 to the lower second flow plate 313, and then from the second flow plate 313 to the next first flow plate 312. The cooling water alternately flows through the first flow plate 312 and the second flow plate 313 within the cooling channel. Air can pass through the gap between the first flow plate 312 and the second flow plate 313 to cool the cooling water. The cooler 31, with its aforementioned configuration, effectively cools the cooling water, thereby improving the cooling effect on the refrigerant.
[0042] In this embodiment, along the direction from the air inlet side 314 to the air outlet side 315, the first water flow plate 312 is inclined in a gradually downward direction, and the second water flow plate 313 is inclined in a gradually upward direction, so that the inclination directions of the first water flow plate 312 and the second water flow plate 313 are opposite. Water-blocking strips 316 are provided on the lower edge of both the first water flow plate 312 and the lower edge of both the second water flow plate 313. The water-blocking strips 316 can temporarily block the flow of cooling water, allowing the cooling water to stay on the first water flow plate 312 and the second water flow plate 313 for a longer time and to have a longer contact time with the air, resulting in a better cooling effect.
[0043] Furthermore, multiple drip holes 317 are arranged along their respective length directions on the first water flow plate 312 and the second water flow plate 313. In this way, when the cooling water flows through the first water flow plate 312 and the second water flow plate 313, it can also form multiple water droplets through the drip holes 317 and drip down, thereby increasing the contact area between the cooling water and the air and improving the cooling effect.
[0044] In this embodiment, the shell-and-tube heat exchanger 25 includes a first tube and a second tube sleeved outside the first tube. A cooling water flow channel is formed inside the first tube, and a refrigerant flow channel is formed between the inner wall of the second tube and the outer wall of the first tube. Thus, the refrigerant surrounds the cooling water and performs sufficient heat exchange inside the shell-and-tube heat exchanger 25.
[0045] Preferably, the saturated humidity heat exchanger 262 is positioned above the water tank 33. Since the water tank 33 contains cooling water, the cooling effect of the saturated humidity heat exchanger 262 on the refrigerant can be improved in the cooling mode.
[0046] Preferably, a flow switch 341 is connected in series between the cooling water pump 34 and the shell-and-tube heat exchanger 25, so as to control the flow of cooling water.
[0047] Preferably, the outlet 222 of the oil-gas separator 22 is also connected to the pipeline between the third port 233 of the four-way valve 23 and the gas-liquid separator 271 via an unloading valve 224. When the unloading valve 224 is open, the gas discharged from the oil-gas separator 22 can directly return to the gas-liquid separator 271 for gas-liquid separation again.
[0048] Preferably, a first filter 293 is connected in series between the refrigeration expansion valve 291 and the shell-and-tube heat exchanger 25, and a second filter 294 is connected in series between the heating expansion valve 292 and the shell-and-tube heat exchanger 25, so that the refrigerant can be effectively filtered.
[0049] The above-described embodiments are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the manual self-centering vise of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. A combined cooling and heating unit, characterized in that, include: The cabinet and the refrigerant circulation assembly and cooling water circulation assembly disposed within the cabinet; The refrigerant circulation assembly includes a compressor, an oil-gas separator, a four-way valve, a plate heat exchanger, a shell-and-tube heat exchanger, an air-cooled heat exchanger, a saturated humidity heat exchanger, and a gas-liquid separator, all connected by pipelines. The compressor's exhaust port is connected to the oil-gas separator's inlet port; the oil-gas separator's outlet port is connected to the first port of the four-way valve; the oil outlet port of the oil-gas separator is connected to the compressor's oil filler port; and the fourth port of the four-way valve is connected sequentially to the four-way valve via the refrigerant channels of the plate heat exchanger, the shell-and-tube heat exchanger, the air-cooled heat exchanger, and the saturated humidity heat exchanger. The second port of the four-way valve is connected to the suction port of the compressor through the gas-liquid separator. The pipeline between the plate heat exchanger and the shell-and-tube heat exchanger is provided with a first one-way valve and a refrigeration expansion valve connected in parallel. The outlet of the first one-way valve is connected to the shell-and-tube heat exchanger. The pipeline between the shell-and-tube heat exchanger and the air-cooled heat exchanger is provided with a second one-way valve and a heating expansion valve connected in parallel. The outlet of the second one-way valve is connected to the shell-and-tube heat exchanger. The third port of the four-way valve is also connected to the pipeline between the plate heat exchanger and the refrigeration expansion valve through a heating enthalpy-increasing valve. The cooling water circulation assembly includes a cooler, a water distributor, a water tank, and a cooling water pump. The cooler includes an inlet at the top and an outlet at the bottom. The water distributor is located at the inlet. The cooler is used to exchange heat between the flowing cooling water and the air. The water tank is located at the bottom of the cooler and is used to receive the cooling water flowing out from the outlet of the cooler. The water tank is connected to the input end of the cooling water pump. The output end of the cooling water pump is connected to the water distributor through the cooling water flow channel of the shell-and-tube heat exchanger. The cooling water exchanges heat with the refrigerant in the refrigerant flow channel within the cooling water flow channel. The cabinet is equipped with a cooling water supply valve, a cooling water drain valve, a hot water inlet, and a hot water outlet. The cooling water supply valve and the cooling water drain valve are connected to the water tank. The hot water inlet is connected to the water inlet of the plate heat exchanger, and the hot water outlet is connected to the water outlet of the plate heat exchanger.
2. The integrated refrigeration and heating unit according to claim 1, characterized in that: A heat exchange chamber is formed inside the cabinet. A first air inlet and a second air inlet are provided on the side of the cabinet. An air outlet is provided on the top of the cabinet. The first air inlet, the second air inlet and the air outlet are connected to the heat exchange chamber. A fan is arranged at the air outlet. The cooler is arranged at the first air inlet and the air-cooled heat exchanger is arranged at the second air inlet.
3. The integrated refrigeration and heating unit according to claim 2, characterized in that: The cooler includes a frame, multiple first flow plates and multiple second flow plates. The multiple first flow plates and multiple second flow plates are arranged alternately in the frame in a vertical direction. The multiple first flow plates and multiple second flow plates together form a cooling channel, which is connected to the outside air. The first flow plates and the second flow plates are both inclined to the horizontal plane, and the inclination directions of the first flow plates and the second flow plates are opposite.
4. The integrated refrigeration and heating unit according to claim 3, characterized in that: One side of the frame is the air inlet side, and the other side is the air outlet side. Along the direction from the air inlet side to the air outlet side, the first water flow plate is inclined in a way that gradually extends downward, and the second water flow plate is inclined in a way that gradually extends upward. Water-blocking strips are provided on the lower edge of both the first water flow plate and the lower edge of the second water flow plate.
5. The integrated refrigeration and heating unit according to claim 3, characterized in that: Both the first and second flow plates have multiple drip holes arranged along their respective length directions.
6. The integrated refrigeration and heating unit according to claim 1, characterized in that: The shell-and-tube heat exchanger includes a first tube and a second tube sleeved outside the first tube. The cooling water flow channel is formed inside the first tube, and the refrigerant flow channel is formed between the inner wall of the second tube and the outer wall of the first tube.
7. The integrated refrigeration and heating unit according to claim 1, characterized in that: The saturated humidity heat exchanger is positioned above the water tank.
8. The integrated refrigeration and heating unit according to claim 1, characterized in that: A flow switch is connected in series between the cooling water pump and the shell-and-tube heat exchanger.
9. The integrated refrigeration and heating unit according to claim 1, characterized in that: The outlet of the oil-gas separator is also connected to the pipeline between the third port of the four-way valve and the gas-liquid separator via an unloading valve.
10. The integrated refrigeration and heating unit according to any one of claims 1-9, characterized in that: A first filter is connected in series in the pipeline between the refrigeration expansion valve and the shell-and-tube heat exchanger, and a second filter is connected in series in the pipeline between the heating expansion valve and the shell-and-tube heat exchanger.