Evaporative cooling air conditioner

Abstract

The utility model discloses an evaporative cooling cooling and heating air conditioner, include: case and set up in the plate heat exchanger, water cooling unit and two refrigerant circulating units of case, the refrigerant circulating unit includes compressor, oil gas separator, four -way valve, air -cooled heat exchanger, water -cooled heat exchange part, economizer, electronic expansion valve, the enthalpy valve and gas -liquid separator through the pipeline connection, the evaporative cooling cooling and heating air conditioner of the application is through setting up water cooling unit, and the refrigerant of water -cooled heat exchange part is effectively cooled through the mode of water cooling, has improved the refrigeration effect greatly, can adapt to high temperature environment, and the economic benefits are obvious, and the refrigerant circulating unit is set up two, and respectively intercommunication in the two refrigerant flow channel and the heat exchange water flow channel heat exchange that set up in the plate heat exchanger, greatly increase the heat exchange efficiency, make the refrigeration heating effect better.

Description

Technical Field

[0001] This utility model relates to the technical field of refrigeration and heating module units, specifically an evaporative cooling air conditioner. Background Technology

[0002] There are already many integrated cooling and heating devices on the market, which have both cooling and heating modes and can achieve the functions of cooling or heating air or liquid.

[0003] However, the current design of such equipment is not reasonable enough. Generally speaking, in cooling mode, only two heat exchangers are used as condensers. These two heat exchangers are basically air-cooled heat exchangers. When the ambient temperature is too high, the condenser cannot effectively cool the refrigerant, which will lead to insufficient cooling effect at the terminal. It can be seen that the ambient temperature has a great impact on the equipment. On the other hand, a set of equipment usually has only one refrigerant circulation loop. When facing high-power cooling and heating conditions, it cannot achieve good results. Even if some equipment has two refrigerant circulation loops, due to structural design defects, the heat exchange efficiency between them and the medium that needs to be heat exchanged is also low. Utility Model Content

[0004] The purpose of this utility model is to provide a solution to the technical problems in the background art described above.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An evaporative cooling air conditioning unit, comprising:

[0007] The chassis, and the plate heat exchanger, water cooling unit and two refrigerant circulation units disposed within the chassis;

[0008] The chassis has an upper accommodating cavity and a lower accommodating cavity that are separated into an upper and a lower accommodating cavity. The upper accommodating cavity is divided into a first ventilation cavity and a second ventilation cavity by a partition. An air outlet duct connecting the first ventilation cavity and the second ventilation cavity is provided on the top of the chassis. A fan is provided in the air outlet duct. A first air inlet connecting the first ventilation cavity and a second air inlet connecting the second ventilation cavity are provided on the side surface of the chassis.

[0009] Each refrigerant circulation unit includes a compressor, an oil-gas separator, a four-way valve, an air-cooled heat exchanger, a water-cooled heat exchange component, an economizer, an electronic expansion valve, an enthalpy-increasing valve, and a gas-liquid separator connected by pipelines. The air-cooled heat exchangers of both refrigerant circulation units are located within the first ventilation chamber, while the water cooling unit and the water-cooled heat exchange components of both refrigerant circulation units are located within the second ventilation chamber. The water cooling unit can cool the water-cooled heat exchange components by exchanging heat between cooling water and air. The plate heat exchanger has two refrigerant channels and one hot water channel that exchange heat with each other. The two ends of each refrigerant channel are a first refrigerant port and a second refrigerant port, respectively. Each refrigerant circulation unit is connected to one of the refrigerant channels.

[0010] In each refrigerant circulation unit, the compressor outlet is connected to the oil-gas separator inlet, the oil-gas separator outlet is connected to the first port of the four-way valve, the oil outlet of the oil-gas separator is connected to the compressor suction port, the second port of the four-way valve is connected to the fourth port of the four-way valve via an air-cooled heat exchanger, a water-cooled heat exchange component, an electronic expansion valve, an economizer, a first refrigerant port, a refrigerant flow channel, and a second refrigerant port, and the third port of the four-way valve is connected to the compressor suction port via the gas-liquid separator, one end of the enthalpy-increasing valve is connected to the pipeline between the economizer and the first refrigerant port, and the other end is connected to the compressor enthalpy-increasing port via the economizer's make-up gas pipeline, and the oil-gas separator outlet is also connected to the pipeline between the four-way valve and the gas-liquid separator via a bypass solenoid valve.

[0011] Preferably, the water cooling unit includes a cooler, a water distributor, a water collection tray, and a cooling water pump. Two coolers are provided, each with an inlet at the top and an outlet at the bottom. The water distributor is installed at both inlet ends. The cooler is used to exchange heat between the flowing cooling water and the air. The water collection tray is located at the bottom of the cooler to collect the cooling water flowing out from the outlet end. The water collection tray is connected to the input end of the cooling water pump, and the output end of the cooling water pump is connected to the water distributor. The water-cooled heat exchange components of the two refrigerant circulation units are respectively installed in the two coolers, thereby exchanging heat with the cooling water.

[0012] Preferably, the chassis is provided with a cooling water supply valve, a cooling water drain valve, a hot water exchange inlet, and a hot water exchange outlet. The cooling water supply valve and the cooling water drain valve are connected to the water collection tray, and the hot water exchange inlet and the hot water exchange outlet are respectively connected to the two ends of the hot water exchange channel.

[0013] Preferably, the cooler includes a frame and multiple water flow plate assemblies, which are arranged sequentially in the frame along a vertical direction. Each water flow plate assembly is provided with multiple drip holes so that cooling water can flow from the uppermost water flow plate assembly to the lowermost water flow plate assembly in sequence. The water-cooled heat exchange component includes several spiral finned heat exchange tubes, and each water flow plate assembly is provided with two spiral finned heat exchange tubes.

[0014] Preferably, the flow plate assembly includes a first flow plate and a second flow plate, which are alternately arranged vertically. The first flow plate is bent into a first plate section, a second plate section, a third plate section, and a fourth plate section connected in sequence. The second flow plate is bent into a fifth plate section, a sixth plate section, a seventh plate section, and an eighth plate section connected in sequence. The second plate section and the sixth plate section are parallel to the horizontal plane. The angle between the first plate section and the second plate section is 90°, the angle between the second plate section and the third plate section is 129°, the angle between the third plate section and the fourth plate section is 37°, the angle between the fifth plate section and the sixth plate section is 90°, the angle between the sixth plate section and the seventh plate section is 124°, and the angle between the seventh plate section and the eighth plate section is 37°.

[0015] Preferably, a plurality of drip holes are arranged sequentially along the length of the water flow plate assembly, and the drip holes are disposed on the second plate portion and the sixth plate portion.

[0016] Preferably, there are two air outlet ducts.

[0017] Preferably, a cooling water filter is provided in the water collection tray.

[0018] Preferably, a first filter is connected in series between the electronic expansion valve and the water-cooled heat exchange component.

[0019] Preferably, a second filter is connected in series in the pipeline between the economizer and the plate heat exchanger.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: The evaporative cooling air conditioner of this application, by setting a water cooling unit, effectively cools the refrigerant of the water-cooled heat exchange component through water cooling when in cooling mode, which greatly improves the cooling effect, can adapt to high-temperature environments, and has obvious economic benefits. In addition, the water cooling unit, water-cooled heat exchange component and air-cooled heat exchanger are respectively set in two ventilation cavities, which can prevent water vapor from corroding the air-cooled heat exchanger and greatly improve its service life. Moreover, the refrigerant circulation unit is set to two, and they are respectively connected to the two refrigerant flow channels and the hot water flow channels set in the plate heat exchanger, which greatly increases the heat exchange efficiency and makes the cooling and heating effect better. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the evaporative cooling air conditioner of this utility model;

[0022] Figure 2 This is a schematic diagram of the horizontal cross-sectional structure of the evaporative cooling air conditioner of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the air-cooled heat exchanger of this utility model;

[0024] Figure 4 This is an exploded view of the water cooling unit and water-cooled heat exchange components of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the flow plate assembly of this utility model;

[0026] Figure 6 This is a schematic diagram of the flow plate assembly and spiral finned heat exchange tube in the embodiments of this application;

[0027] Figure 7 This is a schematic diagram of component connections in the heating mode of the evaporative cooling air conditioner in this embodiment of the application;

[0028] Figure 8 This is a schematic diagram of component connections in the cooling mode of the evaporative cooling air conditioner in the embodiments of this application;

[0029] In the diagram: 1. Chassis; 11. First ventilation chamber; 12. Second ventilation chamber; 13. First air inlet; 14. Second air inlet; 15. Air outlet; 151. Fan; 16. Cooling water supply valve; 17. Cooling water drain valve; 18. Hot water inlet; 19. Hot water outlet; 111. Partition; 112. Door panel; 21. Compressor; 211. Air outlet; 212. Air intake; 213. Heat exchanger port; 22. Oil-gas separator; 221. Air inlet; 222. Air outlet; 223. Oil outlet; 23. Four-way valve; 231. First port; 232. Second port; 233. Third port; 234. Fourth port; 24. Air-cooled heat exchanger; 25. Water-cooled heat exchange components; 251. Spiral finned heat exchange tube; 26. Economizer; 26 1. Gas supply line; 271. Electronic expansion valve; 272. Enthalpy-increasing valve; 29. ​​Gas-liquid separator; 30. Bypass solenoid valve; 4. Water cooling unit; 41. Cooler; 411. Frame; 412. Water flow plate assembly; 4121. First water flow plate; 4122. Second water flow plate; 401. First plate section; 402. Second plate section; 403. Third plate section; 404. Fourth plate section; 405. Fifth plate section; 406. Sixth plate section; 407. Seventh plate section; 408. Eighth plate section; 409. Drip hole; 42. Water distributor; 43. Water collection tray; 431. Cooling water filter; 44. Cooling water pump; 5. Plate heat exchanger; 51. Refrigerant flow channel; 511. First refrigerant port; 512. Second refrigerant port; 52. Hot water flow channel. Detailed Implementation

[0030] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0031] Please also refer to Figure 1-8 This embodiment provides an evaporative cooling air conditioner, including a casing 1 and a plate heat exchanger 5, a water cooling unit 4 and two refrigerant circulation units disposed within the casing 1.

[0032] The chassis 1 comprises an upper and a lower accommodating cavity, which are separated by a partition 111. The upper accommodating cavity is further divided into a first ventilation cavity 11 and a second ventilation cavity 12. An air outlet duct 15, connecting the first and second ventilation cavities 11 and 12, is located on the top of the chassis 1. A fan 151 is installed in the air outlet duct 15. A first air inlet 13, connecting the first ventilation cavity 11, and a second air inlet 14, connecting the second ventilation cavity 12, are located on the side surface of the chassis 1. When the fan 151 operates, air is drawn in through the first and second air inlets 13 and 14, flows through the first and second ventilation cavities 11 and 12, and is then discharged from the chassis 1 through the air outlet duct 15. To improve ventilation efficiency, this embodiment uses two air outlet ducts, each equipped with a fan, thus enhancing overall ventilation efficiency.

[0033] Each refrigerant circulation unit forms a refrigerant loop. Specifically, the refrigerant circulation unit includes a compressor 21, an oil-gas separator 22, a four-way valve 23, an air-cooled heat exchanger 24, a water-cooled heat exchange component 25, an economizer 26, an electronic expansion valve 271, an enthalpy-increasing valve 272, and a gas-liquid separator 29, all connected by pipelines.

[0034] The air-cooled heat exchangers 24 of both refrigerant circulation units are located within the first ventilation chamber 11, allowing them to exchange heat with the air within the first ventilation chamber 11. The water-cooled heat exchange components 25 and the water cooling unit 4 of both refrigerant circulation units are located within the second ventilation chamber 12. The water cooling unit 4 can cool the water-cooled heat exchange components 25 by exchanging heat with the air using cooling water. In addition, the compressor 21, oil-gas separator 22, four-way valve 23, economizer 26, electronic expansion valve 271, enthalpy-increasing valve 272, plate heat exchanger 5, and gas-liquid separator 29 are all located within the lower accommodating cavity. As can be seen from the above, this embodiment sets up a first ventilation cavity 11 and a second ventilation cavity 12 that are separated from each other to install the air-cooled heat exchanger 24 and the water-cooled heat exchange component 25 respectively. This can prevent the cooling water that exchanges heat with the water-cooled heat exchange component 25 from splashing onto the air-cooled heat exchanger 24 and causing corrosion of the air-cooled heat exchanger 24, thereby improving the service life of the air-cooled heat exchanger 24. The design is very reasonable.

[0035] To improve the heat exchange efficiency between the air-cooled heat exchanger 24 and the air, preferably, the chassis 1 in this embodiment has a rectangular structure, with two first air inlets 13. Each first air inlet 13 is disposed on three sequentially connected side surfaces of the chassis 1, and each air-cooled heat exchanger 24 is exposed in one of the first air inlets 13. The second air inlet 14 is disposed on the side surface of the chassis 1 where no first air inlet 13 is disposed.

[0036] The water-cooled heat exchange component 25 mainly exchanges heat with the cooling water of the water-cooling unit 4. Therefore, its need for heat exchange with air is not significant, meaning the area of ​​the second air inlet 14 does not need to be large. By arranging the first air inlet 13 as described above, the contact area between the air-cooled heat exchanger 24 and the air can be increased, the airflow rate of the first ventilation cavity 11 can be increased, and the heat exchange efficiency of the air-cooled heat exchanger 24 can be improved. The air-cooled heat exchanger 24 has a U-shaped structure to accommodate the arrangement of the first air inlet 13. A door panel 112 is installed at the second air inlet 14. The door panel 112 can be opened and closed, and multiple ventilation holes are provided through the door panel 112. This improves the aesthetics and practicality of the second air inlet 14.

[0037] The plate heat exchanger 5 is equipped with two refrigerant channels 51 and a hot water channel 52 for mutual heat exchange. The hot water channel 52 can be circulated with water to be exchanged, thus achieving cooling or heating of the water. For ease of description, the two ends of the refrigerant channel 51 are a first refrigerant port 511 and a second refrigerant port 512, respectively. Each refrigerant circulation unit is connected to one refrigerant channel 51. That is to say, the evaporative cooling air conditioner in this embodiment can exchange heat with the hot water to be exchanged in the hot water channel 52 through two refrigerant circulation units via two refrigerant channels 51, which can greatly improve the heat exchange efficiency and make the cooling or heating effect more effective. Moreover, the heat exchange of two refrigerant channels 51 and one hot water channel 52 is realized in one plate heat exchanger 5, which saves space and makes the structural design more reasonable.

[0038] In this embodiment, in each refrigerant circulation unit, the outlet 211 of the compressor 21 is connected to the inlet 221 of the oil-gas separator 22, the outlet 222 of the oil-gas separator 22 is connected to the first port 231 of the four-way valve 23, the oil outlet 223 of the oil-gas separator 22 is connected to the suction port 212 of the compressor 21, and the second port 232 of the four-way valve 23 sequentially passes through the air-cooled heat exchanger 24, the water-cooled heat exchange component 25, the electronic expansion valve 271, the economizer 26, the first refrigerant port 511, the refrigerant flow channel 51, and the second refrigerant port 512. The fourth port 234 of the four-way valve 23 is then connected to the third port 233 of the four-way valve 23. The third port 233 of the four-way valve 23 is connected to the suction port 212 of the compressor 21 through the gas-liquid separator 29. One end of the enthalpy-increasing valve 272 is connected to the pipeline between the economizer 26 and the first refrigerant port 511, and the other end is connected to the enthalpy-increasing port 213 of the compressor 21 through the gas replenishment pipeline 261 of the economizer 26. The exhaust port 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 29 through a bypass solenoid valve 30.

[0039] The cooling water circulation assembly forms a cooling water circuit. The cooling water circulation assembly can exchange heat with the air to reduce the temperature of the cooling water. At the same time, the cooled cooling water comes into contact with the water-cooled heat exchange component 25 to exchange heat with the refrigerant in the water-cooled heat exchange component 25, thereby cooling and liquefying the refrigerant. Specifically, the water cooling unit 4 in this embodiment includes a cooler 41, a water distributor 42, a water collection tray 43, and a cooling water pump 44. Two coolers are provided. Each cooler 41 has an inlet at the top and an outlet at the bottom. The water distributor 42 is installed at the inlet, distributing the cooling water entering the cooler 41 evenly. The cooler 41 exchanges heat between the flowing cooling water and air, ensuring the cooling water is adequately cooled. The water collection tray 43 is located at the bottom of the cooler 41, collecting the cooling water flowing out from the outlet. The water collection tray 43 is connected to the input of the cooling water pump 44, and the output of the cooling water pump 44 is connected to the water distributor 42. The water-cooled heat exchange components 25 of the two refrigerant circulation units are respectively installed in the two coolers 41, thereby exchanging heat with the cooling water. When the cooling water pump 44 starts, cooling water is delivered. The cooling water is output from the output end of the cooling water pump 44 and flows back to the input end of the cooling water pump 44 after passing through the water distributor 42, the inlet end of the cooler 41, the inside of the cooler 41, the outlet end of the cooler 41 and the water collection plate 43.

[0040] The chassis 1 is equipped with a cooling water supply valve 16, a cooling water drain valve 17, a hot water inlet 18, and a hot water outlet 19. The cooling water supply valve 16 and the cooling water drain valve 17 are connected to the water collection tray 43, so that cooling water can be supplied through the cooling water supply valve 16 and discharged through the cooling water drain valve 17. The hot water inlet 18 and the hot water outlet 19 are respectively connected to the two ends of the hot water exchange channel 52. So that when the evaporative cooling air conditioner is used at the terminal, the external liquid to be heated or cooled can be introduced into the hot water exchange channel 52 of the plate heat exchanger 5 through the hot water inlet 18, so that the liquid is heated or cooled, and finally discharged from the hot water outlet 19. A hot and cold water pump is also installed on the pipeline between the hot water outlet 19 and the hot water exchange channel 52, so that the liquid can be discharged quickly.

[0041] This embodiment of the evaporative cooling air conditioner, by setting the above-mentioned components, can realize two working modes: cooling mode and heating mode. Its working process is as follows (the working process of the two refrigerant circulation units is the same, so only one is described):

[0042] Cooling mode:

[0043] like Figure 8As shown, the air-cooled heat exchanger 24 and the water-cooled heat exchange component 25 are used as condensers, the plate heat exchanger 5 is used as an evaporator, the enthalpy-increasing valve 272 is in the closed state, the first port 231 and the second port 232 of the four-way valve 23 are connected, the third port 233 and the fourth port 234 of the four-way valve 23 are connected, and the remaining components are in the open state.

[0044] In this cooling mode, the refrigerant flow path is as follows: compressor 21 outlet 211, oil-gas separator 22 inlet 221, oil-gas separator 22 outlet 222, four-way valve 23 first port 231, two ports 232, air-cooled heat exchanger 24, water-cooled heat exchange component 25, electronic expansion valve 271, economizer 26, first refrigerant port 511, refrigerant flow channel 51, second refrigerant port 512, four-way valve 23 fourth port 234, three ports 233, gas-liquid separator 29, and compressor 21 suction port 212. When the bypass solenoid valve 30 is opened, some of the refrigerant discharged from the oil-gas separator 22 outlet 222 can flow directly back into the gas-liquid separator 29, thus replenishing the refrigerant entering the compressor 21 in a timely manner.

[0045] In cooling mode, the water cooling unit is in operation, and the flow path of the cooling water is as follows: the output end of the cooling water pump 44, the water distributor 42, the inlet end of the cooler 41, the interior of the cooler 41, the outlet end of the cooler 41, the water collection tray 43, and the input end of the cooling water pump 44.

[0046] Heating mode:

[0047] like Figure 7 As shown, the air-cooled heat exchanger 24 and the water-cooled heat exchange component 25 are used as evaporators, the plate heat exchanger 5 is used as a condenser, the bypass solenoid valve 30 and the water cooling unit are in the closed state, the first port 231 and the fourth port 234 of the four-way valve 23 are connected, the second port 232 and the third port 233 are connected, and the remaining components are in the open state.

[0048] In heating mode, the refrigerant flow path is as follows: compressor outlet 211, oil-gas separator inlet 221, oil-gas separator exhaust port 222, four-way valve 23's first port 231, fourth port 234, second refrigerant port 512, refrigerant channel 51, first refrigerant port 511, economizer 26, electronic expansion valve 271, water-cooled heat exchange component 25, air-cooled heat exchanger 24, four-way valve 23's second port 232, third port 233, gas-liquid separator 29, and compressor 21's suction port 212. The ignition-enhancing valve opens, allowing a portion of the refrigerant flowing from the first refrigerant port 511 to pass through the ignition-enhancing valve and then through the economizer 26's make-up gas line 261 into compressor 21's ignition-enhancing port 213. This increases compressor 21's suction volume, lowers exhaust temperature, and thus improves heating efficiency.

[0049] As can be seen from the above technical solution, the evaporative cooling air conditioner of this application, by setting up a water cooling unit 4, effectively cools the refrigerant of the water-cooled heat exchange component through water cooling when in cooling mode, which greatly improves the cooling effect, can adapt to high-temperature environments, and has obvious economic benefits. Moreover, the water cooling unit 4, the water-cooled heat exchange component and the air-cooled heat exchanger 24 are respectively set in two ventilation cavities, which can prevent water vapor from corroding the air-cooled heat exchanger 24 and greatly improve its service life. In addition, there are two refrigerant circulation units, which are respectively connected to the two refrigerant flow channels and the hot water flow channels set in the plate heat exchanger for heat exchange, which greatly increases the heat exchange efficiency and makes the cooling and heating effect better.

[0050] Preferably, in this embodiment, the cooler 41 includes a frame 411 and multiple water flow plate assemblies 412. The multiple water flow plate assemblies 412 are arranged vertically in the frame 411. Each water flow plate assembly 412 has multiple drip holes 409 to allow cooling water to flow sequentially from the uppermost water flow plate assembly 412 to the lowermost water flow plate assembly 412. The water-cooled heat exchange component 25 includes several spiral finned heat exchange tubes 251. Each water flow plate assembly 412 has two spiral finned heat exchange tubes 251 through which refrigerant can pass. Air enters from the second air inlet 14 of the chassis 1 and exits from the air outlet 15, allowing for sufficient heat exchange with the cooling water flowing through the water flow plate assemblies 412, thus effectively cooling the cooling water. The cooling water flows sequentially from top to bottom through multiple flow plate assemblies 412, with gaps between the assemblies allowing air to pass through, thus cooling the water. The cooler 41 described above effectively cools the water, improving its cooling effect on the refrigerant. The spiral finned heat exchange tubes 251 are directly positioned between adjacent flow plate assemblies 412, further enhancing their heat exchange efficiency.

[0051] The flow plate assembly 412 includes a first flow plate 4121 and a second flow plate 4122, which are alternately arranged vertically. In this embodiment, the first flow plate 4121 is bent into a first plate portion 401, a second plate portion 402, a third plate portion 403, and a fourth plate portion 404 connected in sequence, and the second flow plate 4122 is bent into a fifth plate portion 405, a sixth plate portion 406, a seventh plate portion 407, and an eighth plate portion 408 connected in sequence. 402. The sixth plate 406 is parallel to the horizontal plane. The angle between the first plate 401 and the second plate 402 is 90°, the angle between the second plate 402 and the third plate 403 is 129°, the angle between the third plate 403 and the fourth plate 404 is 37°, the angle between the fifth plate 405 and the sixth plate 406 is 90°, the angle between the sixth plate 406 and the seventh plate 407 is 124°, and the angle between the seventh plate 407 and the eighth plate 408 is 37°. This arrangement of the first and second water flow plates 4121 and 4122 temporarily blocks the flow of cooling water, allowing the cooling water to remain on the water flow plate assembly 412 for a longer period and in contact with air, resulting in better cooling. This arrangement of the water flow plate assembly 412 is structurally sound.

[0052] Furthermore, multiple drip holes 409 are arranged sequentially along the length of the water flow plate assembly 412, and the drip holes 409 are disposed on the second plate portion 402 and the sixth plate portion 406. In this way, when cooling water flows through the water flow plate assembly 412, it can also form multiple water droplets through the multiple drip holes 409 and drip down. The reasonable arrangement of the drip holes 409 can increase the contact area between the cooling water and the air, thereby improving the cooling effect.

[0053] Preferably, a cooling water filter 431 is provided in the water collection tray 43 to filter the cooling water and prevent impurities in the cooling water from clogging the channel.

[0054] Preferably, a first filter is connected in series between the electronic expansion valve 271 and the water-cooled heat exchange component 25, and a second filter is connected in series between the plate heat exchanger 5 and the economizer 26, so that the refrigerant can be effectively filtered.

[0055] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An evaporative cooling heating and cooling air conditioner characterized by, include: The chassis, and the plate heat exchanger, water cooling unit and two refrigerant circulation units disposed within the chassis; The chassis has an upper accommodating cavity and a lower accommodating cavity that are separated into an upper and a lower accommodating cavity. The upper accommodating cavity is divided into a first ventilation cavity and a second ventilation cavity by a partition. An air outlet duct connecting the first ventilation cavity and the second ventilation cavity is provided on the top of the chassis. A fan is provided in the air outlet duct. A first air inlet connecting the first ventilation cavity and a second air inlet connecting the second ventilation cavity are provided on the side surface of the chassis. Each refrigerant circulation unit includes a compressor, an oil-gas separator, a four-way valve, an air-cooled heat exchanger, a water-cooled heat exchange component, an economizer, an electronic expansion valve, an enthalpy-increasing valve, and a gas-liquid separator connected by pipelines. The air-cooled heat exchangers of both refrigerant circulation units are located within the first ventilation chamber, while the water cooling unit and the water-cooled heat exchange components of both refrigerant circulation units are located within the second ventilation chamber. The water cooling unit can cool the water-cooled heat exchange components by exchanging heat between cooling water and air. The plate heat exchanger has two refrigerant channels and one hot water channel that exchange heat with each other. The two ends of each refrigerant channel are a first refrigerant port and a second refrigerant port, respectively. Each refrigerant circulation unit is connected to one of the refrigerant channels. In each refrigerant circulation unit, the compressor outlet is connected to the oil-gas separator inlet, the oil-gas separator outlet is connected to the first port of the four-way valve, the oil outlet of the oil-gas separator is connected to the compressor suction port, the second port of the four-way valve is connected to the fourth port of the four-way valve via an air-cooled heat exchanger, a water-cooled heat exchange component, an electronic expansion valve, an economizer, a first refrigerant port, a refrigerant flow channel, and a second refrigerant port, and the third port of the four-way valve is connected to the compressor suction port via the gas-liquid separator, one end of the enthalpy-increasing valve is connected to the pipeline between the economizer and the first refrigerant port, and the other end is connected to the compressor enthalpy-increasing port via the economizer's make-up gas pipeline, and the oil-gas separator outlet is also connected to the pipeline between the four-way valve and the gas-liquid separator via a bypass solenoid valve.

2. The evaporative cooling air conditioner according to claim 1, characterized in that: The water cooling unit includes a cooler, a water distributor, a water collection tray, and a cooling water pump. Two coolers are provided, each with an inlet at the top and an outlet at the bottom. The water distributors are installed at both inlet ends. The coolers are used to exchange heat between the flowing cooling water and the air. The water collection tray is located at the bottom of the cooler to collect the cooling water flowing out from the outlet end. The water collection tray is connected to the input end of the cooling water pump, and the output end of the cooling water pump is connected to the water distributor. The water-cooled heat exchange components of the two refrigerant circulation units are respectively installed in the two coolers, thereby exchanging heat with the cooling water.

3. The evaporative cooling air conditioner according to claim 2, characterized in that: The chassis is equipped with a cooling water supply valve, a cooling water drain valve, a hot water exchange inlet, and a hot water exchange outlet. The cooling water supply valve and the cooling water drain valve are connected to the water collection tray, and the hot water exchange inlet and the hot water exchange outlet are respectively connected to the two ends of the hot water exchange channel.

4. The evaporative cooling air conditioner according to claim 2, characterized in that: The cooler includes a frame and multiple water flow plate assemblies, which are arranged vertically in the frame. Each water flow plate assembly has multiple drip holes so that cooling water can flow from the uppermost water flow plate assembly to the lowermost water flow plate assembly in sequence. The water-cooled heat exchange component includes several spiral finned heat exchange tubes, and each water flow plate assembly has two spiral finned heat exchange tubes.

5. The evaporative cooling air conditioner according to claim 4, characterized in that: The flow plate assembly includes a first flow plate and a second flow plate, which are alternately arranged vertically. The first flow plate is bent into a first plate section, a second plate section, a third plate section, and a fourth plate section connected in sequence. The second flow plate is bent into a fifth plate section, a sixth plate section, a seventh plate section, and an eighth plate section connected in sequence. The second plate section and the sixth plate section are parallel to the horizontal plane. The angle between the first plate section and the second plate section is 90°, the angle between the second plate section and the third plate section is 129°, the angle between the third plate section and the fourth plate section is 37°, the angle between the fifth plate section and the sixth plate section is 90°, the angle between the sixth plate section and the seventh plate section is 124°, and the angle between the seventh plate section and the eighth plate section is 37°.

6. The evaporative cooling air conditioner according to claim 5, characterized in that: Multiple drip holes are arranged sequentially along the length of the water flow plate assembly, and the drip holes are located on the second plate portion and the sixth plate portion.

7. The evaporative cooling air conditioner according to claim 1, characterized in that: The air outlet is configured as two.

8. The evaporative cooling air conditioner according to claim 2, characterized in that: The water collection tray is equipped with a cooling water filter.

9. The evaporative cooling air conditioner according to any one of claims 1-8, characterized in that: A first filter is connected in series between the electronic expansion valve and the water-cooled heat exchange component.

10. The evaporative cooling air conditioner according to any one of claims 1-8, characterized in that: A second filter is connected in series in the pipeline between the economizer and the plate heat exchanger.

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