Liquid cooling system with low-noise structure and liquid cooling machine

Abstract

The utility model discloses a liquid cooling system of a low-noise structure and a liquid cooling machine, and the liquid cooling system comprises a refrigeration water loop and a refrigeration fluorine path. The refrigeration water loop and the refrigeration fluorine path share one evaporator; the evaporator comprises a first heat exchange channel and a second heat exchange channel; the two ends of the first heat exchange channel are used for communicating with a refrigeration water loop, and the two ends of the second heat exchange channel are used for communicating with a refrigeration fluorine path. The refrigeration water loop and the refrigeration fluorine path respectively comprise a first circulating pump and a compressor; the first circulating pump and the compressor are arranged in the liquid cooling machine, and the first circulating pump and the compressor are covered with corresponding sound insulation pieces respectively so as to isolate operation noise of the first circulating pump and the compressor. According to the liquid cooling system, the structure is simplified and improved, so that the noise of the liquid cooling system can be effectively reduced, and the use experience of the liquid cooling machine is further improved.

Description

Technical Field

[0001] This disclosure generally relates to the field of liquid cooling equipment technology, and specifically to a low-noise liquid cooling system and a liquid cooler. Background Technology

[0002] As the energy storage market continues to expand, the demand for low-noise liquid chillers is becoming increasingly prominent. Whether it's a large-scale energy storage power station or a small distributed energy storage system, efficient and quiet heat dissipation solutions are essential.

[0003] Therefore, low-noise liquid chillers can better adapt to various application scenarios, meet the needs of different customers, and have a broad market potential. For energy storage facilities installed in residential areas, office areas, and other locations, low-noise liquid chillers can reduce the impact of noise on people and improve the quality of life and work efficiency of surrounding residents and staff. However, due to the complex internal structure of current liquid chillers, the noise from numerous components operating together becomes even greater, especially in noise-sensitive application scenarios such as energy storage stations near residential areas and indoor energy storage facilities. Ordinary liquid chillers are difficult to meet the requirements due to their high noise levels. Therefore, we propose a low-noise liquid cooling system and liquid chiller. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a liquid cooling system and liquid chiller with a low noise structure.

[0005] In a first aspect, this application provides a low-noise liquid cooling system, wherein the structural carrier of the liquid cooling system is a liquid chiller, and the liquid cooling system includes: a cooling water circuit and a cooling refrigerant circuit;

[0006] The cooling water circuit and the refrigerant circuit share a single evaporator, which includes a first heat exchange channel and a second heat exchange channel. The two ends of the first heat exchange channel are connected to the cooling water circuit, and the two ends of the second heat exchange channel are connected to the refrigerant circuit.

[0007] The cooling water circuit and the refrigerant circuit each include a first circulating pump and a compressor; the first circulating pump and the compressor are located inside the liquid chiller, and the exterior of the first circulating pump and the compressor are respectively covered with corresponding sound insulation components to isolate the operating noise of the first circulating pump and the compressor.

[0008] According to the technical solution provided in this application, the cooling water circuit includes: an inlet branch and an outlet branch;

[0009] One end of the liquid inlet branch is used to connect to the input end of the first heat exchange channel, and the other end forms a liquid inlet; one end of the liquid outlet branch is used to connect to the output end of the first heat exchange channel, and the other end forms a liquid outlet; wherein, the first circulation pump is disposed on the liquid inlet branch and is used to pump the circulating liquid into the liquid cooler.

[0010] According to the technical solution provided in this application, the liquid inlet branch further includes: a first sensor assembly disposed on the side of the first circulating pump near the liquid inlet;

[0011] The liquid outlet branch also includes a heater, and a second sensor assembly is provided on the side of the heater near the liquid outlet.

[0012] Both the first sensor assembly and the second pressure sensing assembly include a first pressure sensor and a first temperature sensor.

[0013] According to the technical solution provided in this application, the refrigerant circuit includes: the compressor, the condenser, and the dryer filter connected in sequence; the output end of the compressor is connected to the input end of the condenser, and its input end is connected to the output end of the second heat exchange channel; the output end of the dryer filter is connected to the input end of the second heat exchange channel.

[0014] According to the technical solution provided in this application, the refrigerant circuit further includes: a condensing fan that cooperates with the condenser; the condensing fan is disposed inside the liquid cooler.

[0015] According to the technical solution provided in this application, the refrigerant circuit is further provided with a valve assembly and a third sensor assembly;

[0016] The valve assembly includes: a first needle valve disposed between the evaporator and the compressor, and an electronic expansion valve and a second needle valve disposed between the dryer filter and the evaporator;

[0017] The third sensor assembly includes: a second pressure sensor and a second temperature sensor.

[0018] According to the technical solution provided in this application, the liquid cooling system is further provided with an exhaust valve and an expansion tank on the liquid inlet branch, and ball valves are respectively provided at the connecting pipes where the exhaust valve and the expansion tank are located.

[0019] Secondly, this application provides a low-noise liquid cooler that uses the above-mentioned liquid cooling system. The liquid cooler includes: a liquid cooler housing, and a liquid cooling system is disposed inside the liquid cooler housing; a plurality of isolation spaces are formed inside the liquid cooler housing, and each isolation space is used to fix different liquid cooling components.

[0020] The liquid cooling component includes at least: a first circulating pump, a compressor, and a condenser fan; the first circulating pump and the compressor are respectively provided with a first soundproof cover and a second soundproof cover; the liquid cooler housing has several ventilation holes on the side wall near the condenser fan.

[0021] In summary, this technical solution specifically discloses a low-noise liquid cooling system and a liquid chiller; wherein, the liquid cooling system includes: a cooling water circuit and a refrigerant circuit; the cooling water circuit and the refrigerant circuit share a common evaporator, the evaporator including: a first heat exchange channel and a second heat exchange channel; both ends of the first heat exchange channel are used to connect to the cooling water circuit, and both ends of the second heat exchange channel are used to connect to the refrigerant circuit; the cooling water circuit and the refrigerant circuit respectively include a first circulating pump and a compressor; the first circulating pump and the compressor are disposed inside the liquid chiller, and the exterior of the first circulating pump and the compressor are respectively covered with corresponding sound insulation components to isolate the operating noise of the first circulating pump and the compressor.

[0022] Existing liquid chillers have complex internal structures, and the noise generated when numerous components operate together becomes even greater, especially in noise-sensitive applications. Ordinary liquid chillers are difficult to meet usage requirements due to their high noise levels. In this application, the liquid cooling system includes only two circuits: a cooling water circuit and a refrigerant circuit, simplifying the overall liquid cooling system. At the same time, corresponding sound insulation components are installed on the exterior of necessary liquid cooling components, such as the first circulation pump and the compressor, which further reduces the noise of the liquid cooling system and effectively improves the user experience of the liquid chiller. Attached Figure Description

[0023] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of a low-noise liquid cooling system.

[0025] Figure 2 This is a schematic diagram of the first structure of a liquid cooler with a low-noise design.

[0026] Figure 3 This is a schematic diagram of the second structure of a liquid cooler with a low-noise design.

[0027] The diagram is labeled as follows: 1. Liquid chiller; 2. Refrigeration water circuit; 21. Liquid inlet branch; 22. Liquid outlet branch; 3. Refrigerant circuit; 4. Evaporator; 41. First heat exchange channel; 42. Second heat exchange channel; 5. First circulating pump; 6. Compressor; 7. Heater; 8. First pressure sensor; 9. First temperature sensor; 10. Condenser; 11. Dryer filter; 12. Condenser fan; 13. Vent; 14. First needle valve; 15. Electronic expansion valve; 16. Second needle valve; 17. Second pressure sensor; 18. Second temperature sensor; 19. Exhaust valve; 20. Expansion tank; 23. Ball valve; 24. Liquid chiller housing; 25. First soundproof enclosure; 26. Second soundproof enclosure; 27. Pressure switch. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] Example 1

[0031] To make the technical solutions of the embodiments of this application clearer and easier to understand, the application background of the embodiments of this application is introduced below.

[0032] With the rapid development of the energy storage industry, liquid cooling technology has become a key choice for temperature control in energy storage systems due to its excellent heat dissipation capabilities. However, existing liquid chillers generally suffer from high noise levels, which not only disturbs the surrounding environment but may also adversely affect the stable operation of energy storage equipment. Especially in noise-sensitive applications, such as energy storage stations near residential areas and indoor energy storage facilities, ordinary liquid chillers are insufficient to meet the requirements due to their high noise levels.

[0033] In view of this, the designed low-noise liquid chiller can better adapt to various application scenarios, meet the needs of different customers, and has a broad market potential. For energy storage facilities installed in residential areas, office areas, and other locations, the low-noise liquid chiller can reduce the impact of noise on people, improving the quality of life and work efficiency of surrounding residents and staff. The liquid chiller proposed in this application embodiment is an optimized design based on the traditional liquid cooling system: the internal piping system is greatly simplified, retaining only the basic refrigerant water circuit and refrigerant circuit, and the traditional external fan is moved into the unit through reasonable design. At the same time, sound insulation cotton is made for vibrating components such as water pumps and compressors to reduce high-frequency noise, thereby achieving significant noise reduction.

[0034] For details, please refer to Figures 1-3 The diagram shown in this embodiment illustrates a low-noise liquid cooling system and a first and second structural diagram of a liquid chiller. The structural carrier of the liquid cooling system is a liquid chiller 1, and the liquid cooling system includes: a cooling water circuit 2 and a cooling refrigerant circuit 3.

[0035] The cooling water circuit 2 and the refrigerant circuit 3 share an evaporator 4. The evaporator 4 includes a first heat exchange channel 41 and a second heat exchange channel 42. The two ends of the first heat exchange channel 41 are used to connect with the cooling water circuit 2, and the two ends of the second heat exchange channel 42 are used to connect with the refrigerant circuit 3.

[0036] The cooling water circuit 2 and the refrigerant circuit 3 each include a first circulating pump 5 and a compressor 6. The first circulating pump 5 and the compressor 6 are located inside the liquid chiller 1, and the exterior of the first circulating pump 5 and the compressor 6 are respectively covered with corresponding sound insulation components to isolate the operating noise of the first circulating pump 5 and the compressor 6.

[0037] In this embodiment, the external structural carrier of the liquid cooling system is a liquid cooler 1, which has a corresponding liquid cooler housing 24. The components of the liquid cooling system are integrated inside the liquid cooler housing 24. On the one hand, this can play a certain role in noise reduction, and on the other hand, it can prevent key components from directly contacting the external environment, which greatly increases the service life of the components and reduces the maintenance frequency.

[0038] Furthermore, unlike previous liquid cooling systems that integrated numerous components, this system is streamlined to include only two circuits: a refrigerant water circuit 2 and a refrigerant refrigerant circuit 3. This ensures the normal cooling effect of the liquid chiller while minimizing the number of components operating simultaneously, thus reducing noise. Specifically, refrigerant water circuit 2 and refrigerant refrigerant circuit 3 share a single evaporator 4, achieving heat exchange coupling between the two circuits. This allows for more rational heat exchange and energy distribution within the liquid cooling system. The evaporator 4, acting as a heat exchange component, converts the liquid cryogenic refrigerant in refrigerant refrigerant circuit 3 into vapor and absorbs heat from the medium being cooled in refrigerant water circuit 2, thereby achieving the desired cooling effect.

[0039] Furthermore, the cooling water circuit 2 and the refrigerant circuit 3 also include a first circulation pump 5 and a compressor 6, respectively. The first circulation pump 5 is used to provide water circulation power for the cooling water circuit 2, while the compressor 6 is used to compress the refrigerant into a high-temperature and high-pressure gaseous refrigerant, which then enters the circuit to participate in heat exchange. In addition, the first circulation pump 5 and the compressor 6 are located inside the liquid cooler 1. Since both components will generate a certain amount of noise during operation, corresponding sound insulation components are also provided on the outside of the first circulation pump 5 and the compressor 6 to isolate the operating noise of the first circulation pump 5 and the compressor 6, making the overall noise of the liquid cooling system lower, suitable for more applications, and bringing a good user experience.

[0040] In a preferred embodiment, the cooling water circuit 2 includes: an inlet branch 21 and an outlet branch 22;

[0041] One end of the liquid inlet branch 21 is used to connect to the input end of the first heat exchange channel 41, and the other end forms a liquid inlet; one end of the liquid outlet branch 22 is used to connect to the output end of the first heat exchange channel 41, and the other end forms a liquid outlet; wherein, the first circulating pump 5 is installed on the liquid inlet branch 21 and is used to pump the circulating liquid into the liquid cooler 1.

[0042] Specifically, although the internal structure of the liquid cooler in this embodiment is simplified, its practicality still needs to be ensured. Therefore, it is necessary to have corresponding liquid inlet and liquid outlet ends for connection with other external devices that need to dissipate heat or cool down. Here, one end of the liquid inlet branch 21 is used to connect to the input end of the first heat exchange channel 41, and the other end forms a liquid inlet. One end of the liquid outlet branch 22 is used to connect to the output end of the first heat exchange channel 41, and the other end forms a liquid outlet. At the same time, a first circulation pump 5 is provided on the liquid inlet branch 21 to realize the circulation heat dissipation and cooling of external devices.

[0043] In a preferred embodiment, the liquid inlet branch 21 further includes: a first sensor assembly disposed on the side of the first circulation pump 5 near the liquid inlet;

[0044] The liquid outlet branch 22 also includes a heater 7, and a second sensor assembly is provided on the side of the heater 7 near the liquid outlet.

[0045] The first sensor assembly and the second pressure sensor assembly each include: a first pressure sensor 8 and a first temperature sensor 9.

[0046] Since the liquid cooling system is a circulating heat exchange system, the pressure and temperature within the system are crucial data points to monitor during its operation. This ensures that the liquid cooling system operates within the normal temperature and pressure range. Therefore, a first sensor assembly and a second pressure sensor assembly are respectively installed on the side of the first circulating pump 5 near the liquid inlet and the side of the heater 7 near the liquid outlet. These components monitor the inlet and outlet pressures and temperatures at the liquid inlet and outlet, and collect corresponding pressure and temperature signals for the control terminal of the liquid cooling system. This allows the liquid cooling system to adjust the flow rate and on / off status of the liquid and refrigeration in real time, ensuring normal operation. When the liquid cooling system faces low-temperature conditions, the heater 7 can be activated to heat the coolant, ensuring normal operation of the system in low-temperature environments and preventing the coolant from freezing.

[0047] In a preferred embodiment, the refrigerant circuit 3 includes: a compressor 6, a condenser 10, and a dryer filter 11 connected in sequence; the output end of the compressor 6 is connected to the input end of the condenser 10, and its input end is connected to the output end of the second heat exchange channel 42; the output end of the dryer filter 11 is connected to the input end of the second heat exchange channel 42.

[0048] Specifically, the refrigerant circuit 3 includes a compressor 6, a condenser 10, and a dryer filter 11 connected in sequence. The three form a refrigeration circuit, which can also be called a refrigerant circuit. In this circuit, the condenser 10 is a component that can exchange heat with the environment. After receiving the high-temperature and high-pressure gaseous refrigerant converted by the compressor 6, it can condense the high-temperature and high-pressure gaseous refrigerant into low-temperature and high-pressure liquid refrigerant, which then enters the dryer filter 11. The dryer filter 11 is used to filter out particulate impurities in the medium flowing in the heat dissipation circulation circuit. The dryer filter 11 can filter out abnormalities in the medium through its internal filter screen structure, thereby ensuring the stability of the system pressure.

[0049] In a preferred embodiment, the refrigerant circuit 3 further includes a condenser fan 12 that cooperates with the condenser 10; the condenser fan 12 is disposed inside the liquid cooler 1.

[0050] Specifically, the condenser 10 and the condenser fan 12 that work with it can serve as heat sink components of the liquid cooling system. Their function is to dissipate the heat of the high-temperature and high-pressure gaseous refrigerant delivered by the compressor 6 to the outside of the liquid cooler 1, thereby achieving the goal of converting the high-temperature and high-pressure gaseous refrigerant into a low-temperature and high-pressure liquid refrigerant. In the embodiment of this application, the condenser fan 12 is integrated inside the liquid cooler 1. On the one hand, this can prevent the noise generated by the condenser fan 12 during operation from being directly transmitted to the outside. On the other hand, when the condenser fan 12 is integrated inside the liquid cooler 1, the arrangement position of the condenser 10 can be moved relatively closer to the outside of the liquid cooler 1, thereby improving its heat dissipation efficiency.

[0051] In a preferred embodiment, the refrigerant circuit 3 is further provided with a valve assembly and a third sensor assembly;

[0052] The valve assembly includes: a first needle valve 14 disposed between the evaporator 4 and the compressor 6, and an electronic expansion valve 15 and a second needle valve 16 disposed between the dryer filter 11 and the evaporator 4;

[0053] The third sensor assembly includes: a second pressure sensor 17 and a second temperature sensor 18.

[0054] Specifically, the refrigerant circuit 3 is also equipped with a third sensor assembly and a valve assembly to monitor circuit pressure and control circuit flow. The valve assembly has needle-shaped valves for connecting to external liquid injection or extraction components, facilitating the evacuation and refrigerant charging of the refrigerant circuit 3. The electronic expansion valve 15 is used to reduce pressure, throttle, and regulate the flow of the medium in the refrigerant circuit 3, so that the low-temperature, high-pressure liquid refrigerant is converted into a low-temperature, low-pressure liquid refrigerant.

[0055] In addition, the third sensor assembly also includes: a second pressure sensor 17 and a second temperature sensor 18. The second pressure sensor 17 is located between the compressor 6 and the condenser 10, and the second temperature sensor 18 is located at the port of the second heat exchange channel 42 connected to the dryer filter 11, for monitoring the evaporator inlet temperature.

[0056] In a preferred embodiment, a low-pressure switch 27 is also provided on the refrigerant circuit 3. Its main function is to protect the compressor 6 and thus ensure the stable operation of the liquid cooling system. For example, when the refrigerant in the refrigerant circuit 3 is insufficient or leaks, the pressure in the system will drop. At this time, the low-pressure switch 27 will detect this pressure change. When the real-time pressure is lower than its set value, the low-pressure switch 27 will cut off the power supply or electromagnetic clutch circuit of the compressor 6 in time, so that the compressor 6 stops running.

[0057] In a preferred embodiment, the liquid cooling system is further provided with an exhaust valve 19 and an expansion tank 20 on the liquid inlet branch 21, and ball valves 23 are respectively provided at the connecting pipes where the exhaust valve 19 and the expansion tank 20 are located.

[0058] Specifically, the vent valve 19 and expansion tank 20 are designed to ensure stable pressure in the chilled water circuit 2. The expansion tank 20 absorbs and releases pressure fluctuations in the system, maintaining stable system pressure. When the system pressure rises, the expansion tank 20 absorbs the additional pressure by compressing the gas inside; conversely, when the system pressure drops, the gas expands, pushing water back into the system, thereby increasing the system pressure. The vent valve 19 is used to expel gas from the chilled water circuit 2, ensuring the normal operation of the circuit. Ball valves 23 are installed at the connecting pipes where the vent valve 19 and expansion tank 20 are located, making the overall system more flexible and controllable, capable of handling a variety of operating conditions.

[0059] Based on the above description, this application proposes a low-noise liquid cooling system, the specific working principle of which is as follows: a cooling water circuit 2 and a refrigerant circuit 3 are set inside the liquid chiller, simplifying the more complex circuits and layout; the cooling water circuit 2 forms three ports, namely the liquid inlet, liquid outlet, and liquid drain / replenishment port, to ensure the connection and use of the liquid cooling system with external equipment components. In the refrigerant circuit 3, the compressor 6 and the condenser 10 cooperate to form a low-temperature liquid refrigerant, which exchanges heat with the medium connected to the cooling water circuit 2 at the evaporator 4, and absorbs the heat of the medium in the cooling water circuit 2 to achieve basic heat dissipation function. At the same time, the first circulation pump 5 and the compressor 6 are respectively covered with corresponding sound insulation components, and the condenser fan 12 is also set inside the liquid chiller 1, which can further reduce the transmission and release of operating noise.

[0060] Example 2

[0061] See Figure 2 and Figure 3 Based on the low-noise liquid cooling system of Embodiment 1, this application proposes a low-noise liquid cooler. The liquid cooler 1 includes: a liquid cooler housing 24, in which a liquid cooling system is disposed; and multiple isolation spaces are formed inside the liquid cooler housing 24, each isolation space being used to fix different liquid cooling components.

[0062] The liquid cooling component includes at least: a first circulating pump 5, a compressor 6, and a condenser fan 12; the first circulating pump 5 and the compressor 6 are respectively provided with a first soundproof cover 25 and a second soundproof cover 26; a number of ventilation holes 13 are opened on the side wall of the liquid cooler 1 near the condenser fan 12.

[0063] Due to the simplified structure of the liquid cooling system, the specific locations of each component inside the liquid cooler housing 24 also need to be arranged. Therefore, multiple isolation spaces are formed inside the liquid cooler housing 24 by different connecting plates. Each isolation space is used to connect and install different liquid cooling components. Among them, the liquid cooling components include at least: a first circulating pump 5, a compressor 6, and a condenser fan 12. A first soundproof cover 25 and a second soundproof cover 26 are respectively provided outside the first circulating pump 5 and the compressor 6 to reduce the operating noise of the first circulating pump 5 and the compressor 6. In addition, a condenser fan 12 is provided inside the liquid cooler 1. In order to accelerate the heat dissipation effect, several ventilation holes 13 are opened on the side wall of the liquid cooler housing 24 near the condenser fan 12 to ensure good heat exchange between the condenser fan 12 and the outside.

[0064] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A low-noise liquid cooling system, characterized in that, The structural carrier of the liquid cooling system is a liquid chiller (1), and the liquid cooling system includes: a cooling water circuit (2) and a refrigerant circuit (3). The cooling water circuit (2) and the refrigerant circuit (3) share an evaporator (4), which includes a first heat exchange channel (41) and a second heat exchange channel (42); the two ends of the first heat exchange channel (41) are used to connect with the cooling water circuit (2), and the two ends of the second heat exchange channel (42) are used to connect with the refrigerant circuit (3). The cooling water circuit (2) and the refrigerant circuit (3) respectively include a first circulating pump (5) and a compressor (6); the first circulating pump (5) and the compressor (6) are located inside the liquid chiller (1), and the first circulating pump (5) and the compressor (6) are respectively covered with corresponding sound insulation components to isolate the operating noise of the first circulating pump (5) and the compressor (6).

2. The low-noise liquid cooling system according to claim 1, characterized in that, The cooling water circuit (2) includes: an inlet branch (21) and an outlet branch (22); One end of the liquid inlet branch (21) is connected to the input end of the first heat exchange channel (41), and the other end forms a liquid inlet; one end of the liquid outlet branch (22) is connected to the output end of the first heat exchange channel (41), and the other end forms a liquid outlet; wherein, the first circulating pump (5) is installed on the liquid inlet branch (21) and is used to pump the circulating liquid into the liquid cooler (1).

3. The low-noise liquid cooling system according to claim 2, characterized in that, The liquid inlet branch (21) further includes: a first sensor assembly disposed on the side of the first circulating pump (5) near the liquid inlet; The liquid outlet branch (22) further includes a heater (7), and a second sensor assembly is provided on the side of the heater (7) near the liquid outlet. The first sensor assembly and the second pressure sensing assembly each include a first pressure sensor (8) and a first temperature sensor (9).

4. The low-noise liquid cooling system according to claim 1, characterized in that, The refrigerant circuit (3) includes: the compressor (6), the condenser (10) and the dryer filter (11) connected in sequence; the output end of the compressor (6) is connected to the input end of the condenser (10), and its input end is connected to the output end of the second heat exchange channel (42); the output end of the dryer filter (11) is connected to the input end of the second heat exchange channel (42).

5. The low-noise liquid cooling system according to claim 4, characterized in that, The refrigerant circuit (3) further includes a condenser fan (12) that cooperates with the condenser (10); the condenser fan (12) is located inside the liquid cooler (1).

6. The low-noise liquid cooling system according to claim 5, characterized in that, The refrigerant circuit (3) is also equipped with a valve assembly and a third sensor assembly; The valve assembly includes: a first needle valve (14) disposed between the evaporator (4) and the compressor (6), and an electronic expansion valve (15) and a second needle valve (16) disposed between the dryer filter (11) and the evaporator (4). The third sensor assembly includes: a second pressure sensor (17) and a second temperature sensor (18).

7. The low-noise liquid cooling system according to claim 3, characterized in that, The liquid cooling system is also equipped with an exhaust valve (19) and an expansion tank (20) on the liquid inlet branch (21), and ball valves (23) are respectively installed at the connecting pipes where the exhaust valve (19) and the expansion tank (20) are located.

8. A low-noise liquid cooler, characterized in that, The application has the liquid cooling system according to any one of claims 1-7, wherein the liquid cooler (1) includes: a liquid cooler housing (24), wherein the liquid cooler housing (24) is provided with a liquid cooling system; wherein a plurality of isolation spaces are formed inside the liquid cooler housing (24), and each isolation space is used to fix different liquid cooling components; The liquid cooling component includes at least: a first circulating pump (5), a compressor (6) and a condenser fan (12); the first circulating pump (5) and the compressor (6) are respectively provided with a first soundproof cover (25) and a second soundproof cover (26); the liquid cooler housing (24) has several ventilation holes (13) on the side wall near the condenser fan (12).

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