Water-cooled heat pump outdoor unit and water-cooled air conditioner

Abstract

This application discloses a water-cooled heat pump outdoor unit and a water-cooled air conditioner, belonging to the field of air conditioning equipment. The water-cooled heat pump outdoor unit includes a compressor, a four-way valve, a first heat exchanger, and a second heat exchanger. The four-way valve includes first, second, third, and fourth ports. The first and second ports are connected to the compressor's inlet and outlet. The four-way valve is used to control the connection between the second and third ports and between the fourth and first ports, or between the second and fourth ports and between the third and first ports. The first heat exchanger includes a first water flow path and a first refrigerant flow path. The first end of the first refrigerant flow path is connected to the third port, and the two ends of the first water flow path are connected to the two ends of the outdoor water flow path. The second heat exchanger includes a second water flow path and a second refrigerant flow path. The first and second ends of the second refrigerant flow path are connected to the fourth port and the second end of the first refrigerant flow path, and the two ends of the second water flow path are connected to the two ends of the outdoor water flow path. This application can improve heat exchange efficiency to reduce energy consumption.

Description

Technical Field

[0001] This application relates to the field of air conditioning equipment, and in particular to a water-cooled heat pump outdoor unit and a water-cooled air conditioner. Background Technology

[0002] With the continuous development of water-cooled air conditioners, the requirements for their performance and energy efficiency are also gradually increasing. The water-cooled heat pump outdoor unit is a crucial component of a water-cooled air conditioner. In this unit, the coordination between the four-way valve and the heat exchanger is paramount, ensuring that the refrigerant flow direction can be effectively controlled under different operating modes to achieve efficient heat exchange between indoors and outdoors. While existing water-cooled heat pump outdoor units are widely used in residential and industrial refrigeration and heating, inadequate design of the refrigerant and water flow paths has resulted in problems such as insufficient heat exchange efficiency and high energy consumption. Therefore, improving heat exchange efficiency to reduce energy consumption is a pressing technical issue that needs to be addressed. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a water-cooled heat pump outdoor unit and a water-cooled air conditioner, which can improve heat exchange efficiency and reduce energy consumption.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] In a first aspect, this application provides a water-cooled heat pump outdoor unit, comprising:

[0006] compressor;

[0007] The four-way valve includes a first port, a second port, a third port, and a fourth port. The first port and the second port are respectively connected to the air inlet and the air outlet of the compressor. The four-way valve is used to control the connection between the second port and the third port and the connection between the fourth port and the first port, or the connection between the second port and the fourth port and the connection between the third port and the first port.

[0008] The first heat exchanger includes a first water flow path and a first refrigerant flow path. The first end of the first refrigerant flow path is connected to the third interface, and the two ends of the first water flow path are respectively connected to the two ends of the outdoor water flow path. The first heat exchanger is used to exchange heat between the refrigerant and the water in the outdoor water flow path.

[0009] The second heat exchanger includes a second water flow path and a second refrigerant flow path. The first end and the second end of the second refrigerant flow path are respectively connected to the fourth interface and the second end of the first refrigerant flow path. The two ends of the second water flow path are respectively connected to the two ends of the indoor water flow path. The second heat exchanger is used to exchange heat between the refrigerant and the water in the indoor water flow path.

[0010] The water-cooled heat pump outdoor unit according to the first aspect of this application has at least the following beneficial effects: By precisely controlling the four-way valve to open different interfaces, the refrigerant flow direction can be effectively switched. This change in refrigerant flow direction allows the system to respond quickly and change its operating mode, such as switching from cooling mode to heating mode or vice versa. This rapid switching of operating modes improves the system's response speed and operating efficiency. The first and second heat exchangers optimize the heat exchange process between the refrigerant and the indoor and outdoor water flows, respectively, improving heat exchange efficiency. Compared with the prior art, the first heat exchanger of this application, through its efficient heat transfer structure, ensures more thorough heat exchange between the refrigerant and the outdoor water flow path, thereby reducing energy loss; the second heat exchanger ensures efficient heat exchange between the refrigerant and the indoor water flow path, making indoor temperature regulation more precise and stable. These improvements enable the system to complete heat exchange in a shorter time, reducing the operating burden of the equipment and lowering the energy consumption of the compressor and other key components. Highly efficient heat exchange and refrigerant flow control enable the system to improve heat exchange efficiency, reduce energy consumption, lower operating costs, and extend equipment lifespan while ensuring good cooling or heating performance. Therefore, this application can improve heat exchange efficiency to reduce energy consumption.

[0011] According to some embodiments of the first aspect of this application, the water-cooled heat pump outdoor unit further includes a first throttle valve and a second throttle valve, wherein the first throttle valve is used to adjust the water flow rate of the first water flow path, and the second throttle valve is used to adjust the water flow rate of the second water flow path.

[0012] According to some embodiments of the first aspect of this application, the water-cooled heat pump outdoor unit further includes a plurality of temperature sensors, which are respectively used to detect the temperature at both ends of the first refrigerant flow path, the temperature at both ends of the second refrigerant flow path, the temperature at both ends of the first water flow path, the temperature at both ends of the second water flow path, and the temperature of the compressor inlet.

[0013] According to some embodiments of the first aspect of this application, the water-cooled heat pump outdoor unit further includes a three-way valve, the inlet of which is connected to the first end of the second water flow path, and the two outlets of which are used to connect to one end of two different indoor water flow paths.

[0014] According to some embodiments of the first aspect of this application, the water-cooled heat pump outdoor unit further includes an expansion valve, the two ends of which are respectively connected to the second end of the first refrigerant flow path and the second end of the second refrigerant flow path.

[0015] According to some embodiments of the first aspect of this application, the water-cooled heat pump outdoor unit further includes a water pump, the water pump's inlet and outlet being connected to one end of the indoor water flow path and the second end of the second water flow path, respectively.

[0016] According to some embodiments of the first aspect of this application, the water-cooled heat pump outdoor unit further includes a chassis, the chassis including an outer shell, the outer shell having a plurality of fixing holes, the fixing holes being for external fasteners to pass through so that the pipes connecting the first water flow path and the outdoor water flow path, as well as the pipes connecting the second water flow path and the indoor water flow path, are all fixedly connected to the outer shell.

[0017] According to some embodiments of the first aspect of this application, the chassis further includes a base plate with through holes for drainage and ventilation.

[0018] According to some embodiments of the first aspect of this application, the water-cooled heat pump outdoor unit further includes a refrigerant leak detector and an exhaust fan. The exhaust side of the exhaust fan is connected to the inner side of the housing. The housing is also provided with an exhaust hole, which communicates with the exhaust port of the exhaust fan. The refrigerant leak detector is connected to the side of the exhaust fan away from the exhaust hole.

[0019] Secondly, this application provides a water-cooled air conditioner, including the water-cooled heat pump outdoor unit described in the first aspect embodiment of this application.

[0020] The present application will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the water-cooled heat pump outdoor unit of this application;

[0022] Figure 2 This is a schematic block diagram of one embodiment of the water-cooled heat pump outdoor unit of this application;

[0023] Figure 3 This is a structural schematic diagram from another angle of one embodiment of the water-cooled heat pump outdoor unit of this application;

[0024] Figure 4 This is a schematic diagram of the chassis of another embodiment of the water-cooled heat pump outdoor unit of this application;

[0025] Figure 5 for Figure 4 A magnified view of point A.

[0026] Figure label:

[0027] Compressor 100

[0028] Four-way valve 200

[0029] First heat exchanger 300

[0030] Second heat exchanger 400

[0031] First throttle valve 501, second throttle valve 502, temperature sensor 510, three-way valve 520, water pump 530, expansion valve 540

[0032] Chassis 600, outer shell 610, mounting holes 611, vent 612, base plate 620, through hole 621

[0033] Outdoor water flow path 700

[0034] Indoor water flow path 800

[0035] Refrigerant leak detector 900, exhaust fan 910. Detailed Implementation

[0036] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0037] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, and right, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0039] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0040] The embodiments of this application will be further described below with reference to the accompanying drawings.

[0041] Reference Figure 1 , 2As shown, the outdoor unit of the water-cooled heat pump includes a compressor 100, a four-way valve 200, a first heat exchanger 300, and a second heat exchanger 400. The four-way valve 200 includes a first port, a second port, a third port, and a fourth port. The first port and the second port are respectively connected to the air inlet and the air outlet of the compressor 100. The four-way valve 200 is used to control the connection between the second port and the third port, and between the fourth port and the first port, or between the second port and the fourth port and between the third port and the first port. The first heat exchanger 300 includes a first water flow path and a first refrigerant flow path. The first end of the first refrigerant flow path is connected to the third port, and the two ends of the first water flow path are respectively connected to the two ends of the outdoor water flow path 700. The first heat exchanger 300 is used to exchange heat between the refrigerant and the water in the outdoor water flow path 700. The second heat exchanger 400 includes a second water flow path and a second refrigerant flow path. The first end and the second end of the second refrigerant flow path are respectively connected to the fourth port and the second end of the first refrigerant flow path, and the two ends of the second water flow path are respectively connected to the two ends of the indoor water flow path 800. The second heat exchanger 400 is used to exchange heat between the refrigerant and the water in the indoor water flow path 800.

[0042] The above embodiments, through precise control of the four-way valve 200 to open different interfaces, can effectively switch the refrigerant flow direction. This change in refrigerant flow direction allows the system to respond quickly and change its operating mode, such as switching from cooling mode to heating mode or vice versa. This rapid switching of operating modes improves the system's response speed and operating efficiency. The first heat exchanger 300 and the second heat exchanger 400 optimize the heat exchange process between the refrigerant and the indoor and outdoor water flows, respectively, improving heat exchange efficiency. Compared with existing technologies, the first heat exchanger 300 of this application, through its efficient heat transfer structure, ensures more complete heat exchange between the refrigerant and the outdoor water flow path 700, thereby reducing energy loss; the second heat exchanger 400 ensures efficient heat exchange between the refrigerant and the indoor water flow path 800, making indoor temperature regulation more precise and stable. These improvements enable the system to complete heat exchange in a shorter time, reducing the operating burden of equipment and lowering the energy consumption of the compressor 100 and other key components. The efficient heat exchange and refrigerant flow control enable the system to improve heat exchange efficiency, reduce energy consumption, lower operating costs, and extend equipment lifespan while ensuring good cooling or heating effects.

[0043] For example, such as Figure 1 , 2As shown, the first and second ends of the first refrigerant flow path are Q4 and Q3, respectively; the first and second ends of the second refrigerant flow path are Q8 and Q7, respectively; the first and second ends of the first water flow path are Q1 and Q2, respectively; and the first and second ends of the second water flow path are Q5 and Q6, respectively. Regardless of whether the outdoor unit of the water-cooled heat pump is in cooling or heating mode, the direction of water flow remains unchanged. In the first heat exchanger 300, water flows from end Q1 to end Q2 of the first water flow path, and then flows into the outdoor water flow path 700. After passing through the outdoor water flow path 700, it flows back from end Q1 of the first water flow path to the first water flow path, achieving a circulating flow. In the second heat exchanger 400, water flows from end Q6 to end Q5 of the second water flow path, and then flows into the indoor water flow path 800. After passing through the indoor water flow path 800, it flows back from end Q6 of the second water flow path to the second water flow path, achieving a circulating flow.

[0044] To change the operating state of the water-cooled heat pump outdoor unit, the refrigerant flow direction can be altered by controlling the conduction state of different ports of the four-way valve 200. By controlling the conduction of the third port A3 and the second port A2, and the conduction of the fourth port A4 and the first port A1 of the four-way valve 200, the water-cooled heat pump outdoor unit can be switched to cooling mode. In cooling mode, the water-cooled heat pump outdoor unit compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gas through the compressor 100. The high-temperature, high-pressure gas flows from the outlet B1 of the compressor 100 to the second port A2 of the four-way valve 200, then from the second port A2 to the third port A3, and finally flows into the first heat exchanger 300 from the Q4 end of the first refrigerant flow path. In the first heat exchanger 300, the refrigerant in the first refrigerant flow path exchanges heat with the water in the first water flow path, releasing heat into the water, and the refrigerant becomes a low-temperature liquid. Next, the refrigerant flows from end Q3 of the first refrigerant flow path to end Q7 of the second refrigerant flow path and then into the second heat exchanger 400. In the second heat exchanger 400, the refrigerant in the second refrigerant flow path exchanges heat with the water in the second water flow path, absorbing heat from the water and returning to a gaseous state. Then, the refrigerant flows out from end Q8 of the second refrigerant flow path and flows back into the four-way valve 200 through its fourth port A4, then from port A4 to port A1, and finally from port A1 to the air inlet B2 of the compressor 100 and back into the compressor 100. This entire process continues in a cycle, transferring heat from the room to the outside through the refrigerant, thereby lowering the indoor temperature.

[0045] By controlling the fourth port A4 and the second port A2 of the four-way valve 200 to be connected, and the third port A3 and the first port A1 to be connected, the outdoor unit of the water-cooled heat pump can be switched to heating mode. In heating mode, the low-temperature, low-pressure refrigerant in the second refrigerant flow path absorbs heat from the water in the first water flow path, absorbing the heat from the water, and the refrigerant becomes a high-temperature gaseous state. Then, the refrigerant flows from the Q4 end of the first refrigerant flow path to the third port A3 of the four-way valve 200, then from the third port A3 to the first port A1, and finally from the first port A1 to the air inlet B2 of the compressor 100 and back into the compressor 100. The compressor 100 compresses the refrigerant, making the refrigerant a high-temperature, high-pressure gaseous state. Then, the refrigerant flows out from the air outlet B1 of the compressor 100 and flows to the second port A2 of the four-way valve 200, then from the second port A2 to the fourth port A4, and finally from the fourth port A4 to the Q8 end of the second refrigerant flow path and flows into the second heat exchanger 400. Within the second heat exchanger 400, the refrigerant in the second refrigerant flow path exchanges heat with the water in the second water flow path, releasing heat into the water and becoming a low-temperature liquid. Then, the refrigerant flows from end Q7 of the second refrigerant flow path to end Q3 of the first refrigerant flow path and flows into the first heat exchanger 300. This entire process continues in a cycle, transferring heat from the outside to the inside through the refrigerant, thereby raising the indoor temperature.

[0046] Understandably, referring to Figure 1 , 2 As shown in Figure 3, the water-cooled heat pump outdoor unit also includes a first throttling valve 501 and a second throttling valve 502. The first throttling valve 501 is used to regulate the water flow rate in the first water flow path, and the second throttling valve 502 is used to regulate the water flow rate in the second water flow path. The first throttling valve 501 regulates the flow rate in the first water flow path, thereby increasing the heat exchange efficiency between the geothermal water in the outdoor water flow path 700 and the refrigerant. It activates when the heat exchange cannot meet the cooling or heating requirements of the indoor water, i.e., when the temperature of the refrigerant after heat exchange with the first water flow path is too low or too high, failing to meet the cooling or heating requirements of the indoor water. The second throttling valve 502 regulates the flow rate in the second water flow path, thereby increasing the heat exchange efficiency between the water in the indoor water flow path 800 and the refrigerant. It activates when the indoor temperature cannot meet the heating or cooling requirements.

[0047] Understandably, referring to Figure 1 , 2As shown, the water-cooled heat pump outdoor unit also includes several temperature sensors 510. These sensors 510 are used to detect the temperatures at both ends (Q3 and Q4) of the first refrigerant flow path, the two ends (Q7 and Q8) of the second refrigerant flow path, the two ends (Q1 and Q2) of the first water flow path, the two ends (Q5 and Q6) of the second water flow path, and the temperature of the compressor 100's air inlet B2. The water-cooled heat pump outdoor unit is equipped with several temperature sensors 510, which can accurately monitor the temperature of various key components of the system, such as the first refrigerant flow path, the second refrigerant flow path, the first water flow path, the second water flow path, and the compressor 100's air inlet. The function of these temperature sensors 510 is to collect temperature data from each part in real time and optimize the operating status through feedback, ensuring that the heat pump maintains optimal efficiency and safety in different operating modes (cooling or heating). Specifically, the system can adjust the power of the compressor 100 and the water pump 530, as well as the opening degree of the first throttle valve 501 and the second throttle valve 502, based on the temperature detected by the temperature sensor 510. Monitoring temperature data can also detect potential faults in advance, preventing equipment damage due to overheating or overcooling, thereby extending the equipment's service life.

[0048] In some embodiments, by connecting temperature sensors 510 to the system controller, these sensors not only provide real-time temperature data but also work in conjunction with other components (expansion valve 540, compressor 100, etc.) to achieve intelligent adjustment and optimization. If any temperature sensor 510 detects that the temperature exceeds the set safety range (e.g., refrigerant temperature is too high, compressor 100 inlet temperature is too high, etc.), the system can trigger an alarm and automatically adjust its operating status, such as adjusting the opening of the expansion valve 540, adjusting the compressor 100 speed, or suspending operation to protect the equipment. Based on the temperature of the refrigerant and water flow path, the control system can optimize the switching process between cooling and heating modes. For example, in heating mode, if the outdoor temperature is low, the system may need to appropriately increase the workload of the compressor 100 based on the water flow path temperature to output more heat. The data from the temperature sensors 510 can be used to adjust the workload of the heat pump in real time, ensuring that the equipment always operates in the most economical way. For example, when the indoor temperature is close to the set target, the system can reduce operating power and energy waste by adjusting the water flow rate and refrigerant flow rate.

[0049] The temperature sensor 510 can also exchange data with the intelligent control system via wireless or wired networks, supporting remote monitoring and diagnostics. When a system malfunctions or experiences abnormal temperatures, users or maintenance personnel can view real-time temperature data, receive fault alarms, and troubleshoot the problem through a remote platform (such as a mobile app or PC), significantly reducing the cost and time of manual maintenance.

[0050] Understandably, referring to Figure 1, 2 As shown, the water-cooled heat pump outdoor unit also includes a three-way valve 520. The inlet D1 of the three-way valve 520 is connected to the Q5 end of the second water flow path, and the two outlets (D1 and D2 ends) of the three-way valve 520 are used to connect to one end of two different indoor water flow paths 800. By adjusting the switching position of the three-way valve 520, the system can flexibly control the direction and distribution of water flow, so that different indoor areas can receive appropriate temperature-controlled water flow as needed. This not only improves the accuracy of indoor temperature regulation but also optimizes the operating efficiency of the heat pump system and reduces unnecessary energy waste.

[0051] In some embodiments, the two outlets of the three-way valve 520 are connected to different indoor water flow paths 800, which are typically connected to fan coil units, underfloor heating, or other thermostatic devices. The main function of the three-way valve 520 is to adjust the water flow distribution according to the system's needs, allowing hot or cold water to flow to different indoor devices as needed. Specifically, the three-way valve 520 achieves intelligent adjustment through cooperation with the temperature sensor 510. For example, when the system enters heating mode, the three-way valve 520 may direct more hot water to the underfloor heating system, as the underfloor heating system requires a longer supply of low-temperature hot water, while the fan coil unit or other devices may require less hot water. Conversely, in cooling mode, the three-way valve 520 adjusts the water flow path according to the cooling needs of different areas of the room, distributing cold water to areas that need cooling, thereby precisely controlling the indoor temperature. Furthermore, the control of the three-way valve 520 not only relies on user settings but can also automatically adjust the water flow path based on data from the temperature sensor 510, humidity sensor, and external environmental conditions. For example, temperature sensor 510 monitors temperature changes in each area in real time and transmits the data to the control system. The system automatically adjusts the opening of three-way valve 520 to maintain an ideal temperature in each area. If the temperature in a certain area is close to the set value, three-way valve 520 will reduce the water flow in that area to avoid overheating or overcooling, thereby improving the system's energy efficiency. Three-way valve 520 also has fault self-diagnosis and protection functions. For example, when the water flow is abnormal or the system malfunctions, three-way valve 520 can automatically adjust or close according to the control system's instructions to prevent other areas from being affected and ensure the safe operation of the system. Through integration with the intelligent control platform, users can remotely monitor the working status of three-way valve 520, adjust water flow distribution, view temperature data in each area, and optimize the system via a mobile application or PC.

[0052] Understandably, referring to Figure 2As shown, the outdoor unit of the water-cooled heat pump also includes an expansion valve 540. The two ends (E1 and E2) of the expansion valve 540 are connected to the Q3 end of the first refrigerant flow path and the Q7 end of the second refrigerant flow path, respectively. The expansion valve 540 regulates the flow rate and pressure of the refrigerant, controlling the state of the refrigerant entering the first heat exchanger 300 and the second heat exchanger 400, thereby improving the system's heat exchange efficiency and cooling or heating effect. Furthermore, precise adjustment of the expansion valve 540 helps reduce energy consumption and optimize the overall operating performance of the heat pump.

[0053] Understandably, referring to Figure 1 , 2 As shown, the water-cooled heat pump outdoor unit also includes a water pump 530. The inlet C1 and outlet C2 of the water pump 530 are respectively connected to one end of the indoor water flow path 800 and the Q6 end of the second water flow path. The water pump 530 can drive the indoor water to circulate and control the circulation speed of the indoor water in the indoor water flow path 800 according to the indoor temperature requirements.

[0054] Understandably, referring to Figure 1 As shown, the water-cooled heat pump outdoor unit also includes a chassis 600, which includes an outer shell 610. The outer shell 610 is provided with a plurality of fixing holes 611. The fixing holes 611 are used for external fasteners to pass through so that the pipes connecting the first water flow path and the outdoor water flow path 700, as well as the pipes connecting the second water flow path and the indoor water flow path 800, are fixedly connected to the outer shell 610. This allows the pipes to be firmly fixed to the outer shell 610, improving the stability and safety of the water flow path connection and preventing the pipes from loosening or falling off due to vibration or external force. In some embodiments, the external fasteners may be screws.

[0055] Understandably, referring to Figure 1 As shown, the chassis 600 also includes a base plate 620, which has through holes 621 for drainage and ventilation. Through the through holes 621 on the base plate 620, the water-cooled heat pump outdoor unit can effectively drain excess water, preventing damage or rust caused by water accumulation, while keeping the equipment dry and clean during operation. Furthermore, the through holes 621 provide a ventilation channel for the outdoor unit, helping the radiator and other components maintain appropriate operating temperatures and preventing overheating from affecting the performance and lifespan of the heat pump system.

[0056] The number of through holes 621 is not limited in this embodiment, and those skilled in the art can adjust it according to the actual situation.

[0057] Understandably, referring to Figure 3 , 4As shown in Figure 5, the water-cooled heat pump outdoor unit also includes a refrigerant leak detector 900 and an exhaust fan 910. The exhaust side of the exhaust fan 910 is connected to the inner side of the casing 610. The casing 610 is also provided with an exhaust port 612, which is connected to the exhaust outlet of the exhaust fan 910. The refrigerant leak detector 900 is connected to the side of the exhaust fan 910 away from the exhaust port 612. When the refrigerant leak detector 900 detects refrigerant leaking from the pipes inside the water-cooled heat pump outdoor unit, it controls the exhaust fan 910 to start so that the refrigerant is discharged outside the casing 600 through the exhaust port 612, reducing the probability of explosion and improving safety.

[0058] The water-cooled air conditioner of the second aspect of this application includes the water-cooled heat pump outdoor unit of the first aspect of this application, which can improve heat exchange efficiency and reduce energy consumption.

[0059] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A water-cooled heat pump outdoor unit, characterized in that, include: compressor; The four-way valve includes a first port, a second port, a third port, and a fourth port. The first port and the second port are respectively connected to the air inlet and the air outlet of the compressor. The four-way valve is used to control the connection between the second port and the third port and the connection between the fourth port and the first port, or the connection between the second port and the fourth port and the connection between the third port and the first port. The first heat exchanger includes a first water flow path and a first refrigerant flow path. The first end of the first refrigerant flow path is connected to the third interface, and the two ends of the first water flow path are respectively connected to the two ends of the outdoor water flow path. The first heat exchanger is used to exchange heat between the refrigerant and the water in the outdoor water flow path. The second heat exchanger includes a second water flow path and a second refrigerant flow path. The first end and the second end of the second refrigerant flow path are respectively connected to the fourth interface and the second end of the first refrigerant flow path. The two ends of the second water flow path are respectively connected to the two ends of the indoor water flow path. The second heat exchanger is used to exchange heat between the refrigerant and the water in the indoor water flow path.

2. The water-cooled heat pump outdoor unit according to claim 1, characterized in that, The water-cooled heat pump outdoor unit also includes a first throttle valve and a second throttle valve. The first throttle valve is used to adjust the water flow rate of the first water flow path, and the second throttle valve is used to adjust the water flow rate of the second water flow path.

3. The water-cooled heat pump outdoor unit according to claim 1, characterized in that, The water-cooled heat pump outdoor unit also includes several temperature sensors, which are used to detect the temperatures at both ends of the first refrigerant flow path, the temperatures at both ends of the second refrigerant flow path, the temperatures at both ends of the first water flow path, the temperatures at both ends of the second water flow path, and the temperature of the compressor's air inlet.

4. The water-cooled heat pump outdoor unit according to claim 1, characterized in that, The water-cooled heat pump outdoor unit also includes a three-way valve. The inlet of the three-way valve is connected to the first end of the second water flow path, and the two outlets of the three-way valve are used to connect to one end of two different indoor water flow paths.

5. The water-cooled heat pump outdoor unit according to claim 1, characterized in that, The water-cooled heat pump outdoor unit also includes an expansion valve, the two ends of which are respectively connected to the second end of the first refrigerant flow path and the second end of the second refrigerant flow path.

6. The water-cooled heat pump outdoor unit according to claim 1, characterized in that, The water-cooled heat pump outdoor unit also includes a water pump, the water pump's inlet and outlet being connected to one end of the indoor water flow path and the second end of the second water flow path, respectively.

7. The water-cooled heat pump outdoor unit according to claim 1, characterized in that, The water-cooled heat pump outdoor unit also includes a chassis, which includes an outer shell. The outer shell has several fixing holes for external fasteners to pass through so that the pipes connecting the first water flow path and the outdoor water flow path, as well as the pipes connecting the second water flow path and the indoor water flow path, are fixedly connected to the outer shell.

8. The water-cooled heat pump outdoor unit according to claim 7, characterized in that, The chassis also includes a base plate with through holes for drainage and ventilation.

9. The water-cooled heat pump outdoor unit according to claim 8, characterized in that, The water-cooled heat pump outdoor unit also includes a refrigerant leak detector and an exhaust fan. The exhaust side of the exhaust fan is connected to the inner side of the casing. The casing is also provided with an exhaust hole, which is connected to the exhaust port of the exhaust fan. The refrigerant leak detector is connected to the side of the exhaust fan away from the exhaust hole.

10. A water-cooled air conditioner, characterized in that, Includes the water-cooled heat pump outdoor unit as described in any one of claims 1 to 9.

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