Air conditioning system

Abstract

The present invention provides an air-conditioning system, comprising a condenser and an evaporator connected and communicated in sequence, the air-conditioning system also comprising a first fan and a first connecting pipe, the first end of the first connecting pipe being communicated with the outlet of the condenser, and the second end of the first connecting pipe being communicated with the outlet of the evaporator; a radiator being arranged on the first connecting pipe and located between the first end and the second end of the first connecting pipe, the pipe of the radiator being communicated with the first connecting pipe so that the refrigerant flows through the pipe of the radiator so that the radiator dissipates heat to the part to be cooled of the air-conditioning system; a first heat dissipation component being arranged on the first connecting pipe, the first heat dissipation component being located on one side of the first fan, so that air flows through the first heat dissipation component under the action of the first fan. The air-conditioning system of the present invention solves the problem in the prior art that condensation water is easily formed on the surface of the radiator used for dissipating heat to the intelligent power module of the fluorine pump air conditioner, posing a serious safety threat to the intelligent power module.

Description

Technical Field

[0001] The present invention relates to the technical field of air-conditioning equipment, and in particular to an air-conditioning system. Background Art

[0002] With the widespread application of 4G and the gradual popularization of 5G, the heat generated by various data processing equipment is increasing, and data centers are placing increasingly higher demands on the cooling capacity and energy efficiency of air conditioning equipment. Using outdoor natural cold sources during transitional seasons and cold winters to cool data centers can significantly reduce the operating costs of air conditioning equipment. A common method is to use fluorine pump air conditioners. In winter, the fluorine pump mode is activated, the compressor is stopped, and the fluorine pump drives the refrigerant to achieve heat pipe cooling operation, greatly reducing equipment operating costs. Due to fluctuations in data center heat loads and outdoor ambient temperatures, the cooling capacity output of data center computer room air conditioners requires corresponding intelligent adjustment and control to meet the data center's requirements for constant temperature and humidity for air conditioning. Most fluorine pump air conditioner refrigeration systems use variable frequency control, such as variable frequency compressors and DC speed-controlled fans.

[0003] Variable-frequency compression refrigeration systems combined with fluorine pump cycles typically include an intelligent power module (IPM) with relatively high heat generation. As the heat generation of IPMs increases, the requirements for their heat dissipation systems are also becoming increasingly stringent. Current IPMs have poor lateral heat dissipation and low thermal capacity. When an IPM begins operating, the power chips (such as IGBTs, FRDs, or MOS chips) generate significant heat, causing a sudden temperature increase and potentially damaging the IGBTs, FRDs, or MOS chips. The heat generation of IPMs frequently fluctuates, but the cooling fluid is often not precisely controlled during design. This results in large fluctuations in the IPM's operating temperature, making it prone to overheating or surface temperatures falling below the air dew point. When the surface temperature falls below the air dew point, condensation easily forms on the heat sink surface, posing a serious safety threat to the IPM.

[0004] In addition, because the power consumption of the fluorine pump cycle is much smaller than that of the compression refrigeration cycle, the heat generated by the intelligent power module is also relatively small, and the flow rate of cooling fluid required by the intelligent power module is correspondingly smaller. Even when the fluorine pump is circulating, the intelligent power module does not participate in operation, that is, the intelligent power module does not need to be cooled. However, when the outdoor ambient temperature is very low, the outdoor liquid refrigerant pumped by the fluorine pump is very cold. The low temperature can easily be transferred to the radiator of the intelligent power module through copper pipes, etc., and condensation will occur. In addition, long-term shutdown in cold seasons will also cause cold air to be transferred to the intelligent power module, resulting in condensation on the surface of the radiator. Summary of the Invention

[0005] The main purpose of the present invention is to provide an air conditioning system to solve the problem in the prior art that condensation water easily forms on the surface of the radiator used to dissipate heat for the intelligent power module in the fluorine pump air conditioner, posing a serious safety threat to the intelligent power module.

[0006] In order to achieve the above-mentioned objectives, the present invention provides an air-conditioning system, comprising a condenser and an evaporator connected and communicated in sequence, the air-conditioning system also comprising a first fan so that air flows through the evaporator under the action of the first fan, the air-conditioning system also comprising: a first connecting pipe, the first end of the first connecting pipe being communicated with the outlet of the condenser, the second end of the first connecting pipe being communicated with the outlet of the evaporator; a radiator, arranged on the first connecting pipe and located between the first end and the second end of the first connecting pipe, the pipe of the radiator being communicated with the first connecting pipe so that the refrigerant flows through the pipe of the radiator so that the radiator dissipates heat to the part to be cooled of the air-conditioning system; a first heat dissipation component, arranged on the first connecting pipe and located on one side of the radiator, the first heat dissipation component being located on one side of the first fan, so that air flows through the first heat dissipation component under the action of the first fan.

[0007] Furthermore, the first heat dissipation component is arranged between the second end of the first connecting pipe and the radiator.

[0008] Furthermore, the first connecting pipe includes a first heat dissipation pipe section; the first heat dissipation component includes a plurality of first heat dissipation fins, and the plurality of first heat dissipation fins are all arranged on the first heat dissipation pipe section and are arranged in sequence along the extension direction of the first heat dissipation pipe section.

[0009] Furthermore, the air-conditioning system also includes: a cooling capacity regulating device, which is arranged on the first connecting pipe or located on the side of the first connecting pipe, and the cooling capacity regulating device is located between the first end of the first connecting pipe and the radiator; a controller, which is communicatively connected to the cooling capacity regulating device so that the controller controls the cooling capacity regulating device to adjust the cooling capacity entering the radiator according to the temperature of the part to be cooled.

[0010] Furthermore, the cooling capacity regulating device is a control valve with adjustable opening, which is arranged on the first connecting pipe so that the controller controls the opening of the control valve according to the temperature of the component to be cooled to regulate the refrigerant flow through the radiator.

[0011] Furthermore, the first connecting pipe includes a second heat dissipation pipe section, which is located between the first end of the first connecting pipe and the radiator; the cooling capacity regulating device includes a fan, which is arranged on the side of the first connecting pipe, and the fan is rotatably arranged so that air flows through the second heat dissipation pipe section under the action of the fan; wherein the speed of the fan is adjustable so that the controller controls the speed of the fan according to the temperature of the part to be cooled to adjust the temperature of the refrigerant flowing through the radiator.

[0012] Furthermore, the cooling capacity regulating device also includes a second heat dissipation component, which is arranged on the second heat dissipation pipe section; wherein the second heat dissipation component includes a plurality of second heat dissipation fins, which are all arranged on the second heat dissipation pipe section and are arranged in sequence along the extension direction of the second heat dissipation pipe section.

[0013] Furthermore, the air-conditioning system also includes: a valve component, which is arranged on the first connecting pipe and located between the first end of the first connecting pipe and the second heat dissipation pipe section; wherein the valve component is a first one-way valve or a valve that can be turned on and off. When the valve component is the first one-way valve, the first one-way valve is turned on in the direction from the first end of the first connecting pipe to the second heat dissipation pipe section.

[0014] Furthermore, a partial section of the first connecting pipe is a capillary tube, and the capillary tube is located between the first end of the first connecting pipe and the radiator.

[0015] Furthermore, the air-conditioning system also includes: a throttle valve, the outlet of the throttle valve is connected to the inlet of the evaporator; a second one-way valve, the second one-way valve is connected in the direction from the outlet of the condenser to the inlet of the evaporator; a fluorine pump, the fluorine pump and the second one-way valve are arranged in parallel between the inlet of the throttle valve and the outlet of the condenser; a third one-way valve, the third one-way valve is connected in the direction from the outlet of the evaporator to the inlet of the condenser; a compressor, the compressor and the third one-way valve are arranged in parallel between the outlet of the evaporator and the inlet of the condenser; wherein the first end of the first connecting pipe is located between the outlet of the condenser and the second one-way valve; or, the first end of the first connecting pipe is located between the inlet of the throttle valve and the second one-way valve, so that the first end of the first connecting pipe is connected to the outlet of the condenser through the second one-way valve; the second end of the first connecting pipe is located between the outlet of the evaporator and the third one-way valve.

[0016] Furthermore, the air-conditioning system also includes: a second connecting pipe, the first end of the second connecting pipe is connected to the first connecting pipe and is located on the side of the radiator close to the first end of the first connecting pipe; the second end of the second connecting pipe is located between the outlet of the third one-way valve and the inlet of the condenser; a fourth one-way valve is arranged on the second connecting pipe, and the fourth one-way valve is connected in the direction from the first end to the second end of the second connecting pipe.

[0017] Furthermore, the air-conditioning system also includes: a liquid storage part, having a liquid storage chamber for storing refrigerant and a liquid inlet and a liquid outlet connected to the liquid storage chamber, the liquid inlet is connected to the outlet of the condenser, and the liquid outlet is connected to the inlet of the second one-way valve and to the inlet of the fluorine pump; and / or, a gas-liquid separator, the inlet of the gas-liquid separator is connected to the outlet of the evaporator, and the outlet of the gas-liquid separator is connected to the inlet of the compressor; wherein the inlet of the third one-way valve is located between the outlet of the evaporator and the inlet of the gas-liquid separator.

[0018] Applying the technical solution of the present invention, an air conditioning system includes a condenser, an evaporator, a first fan, a first connecting pipe, a radiator, and a first heat dissipation component. Refrigerant liquid flowing out of the condenser flows through the first connecting pipe and then enters the radiator pipe, so that the radiator dissipates heat from the components to be cooled in the air conditioning system. However, when the air conditioning system is in shutdown or fluorine pump cooling mode, the cooling energy of the low-temperature liquid refrigerant or outdoor cold air is easily transferred to the radiator through the pipe. The first fan of the air conditioning system blows indoor air toward the first heat dissipation component, and the first heat dissipation component exchanges heat with the indoor air. The first heat dissipation component absorbs heat and transfers it to the radiator, causing the temperature of the radiator to rise, preventing the temperature of the radiator surface from falling below the air dew point temperature to form condensation water, thereby preventing the condensation water from damaging the intelligent power module and improving the safety of the intelligent power module. Moreover, in the compression refrigeration mode, refrigerant generally flows on the first connecting pipe. At this time, the air driven by the first fan actually exchanges heat with the first heat dissipation component and the first connecting pipe provided with the first heat dissipation component. Its main function is to prevent the refrigerant at the outlet of the first connecting pipe from appearing in the form of liquid refrigerant. If too much liquid refrigerant enters the gas-liquid separator or directly enters the air intake of the compressor, it is easy to cause the risk of liquid hammer to the compressor, so the first heat dissipation component will be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 A schematic diagram showing a first embodiment of an air-conditioning system according to the present invention is shown;

[0021] Figure 2 A schematic diagram showing a second embodiment of an air-conditioning system according to the present invention is shown;

[0022] Figure 3 A schematic diagram of a third embodiment of an air-conditioning system according to the present invention is shown.

[0023] The above drawings include the following reference numerals:

[0024] 10. Evaporator; 20. Condenser; 30. First fan; 40. First connecting pipe; 41. Second heat dissipation pipe section; 46. Capillary tube; 50. Radiator; 60. First heat dissipation component; 61. First heat dissipation pipe section; 62. First heat sink; 70. Cooling capacity adjustment device; 71. Control valve; 73. Fan; 74. Second heat dissipation component; 75. Second heat sink; 80. Valve component; 90. Liquid storage part; 91. Liquid storage chamber; 92. Liquid inlet; 93. Liquid outlet; 110. Second connecting pipe; 120. Fourth one-way valve; 130. Fluorine pump; 150. Compressor; 160. Throttle valve; 170. Second one-way valve; 180. Third one-way valve; 190. Gas-liquid separator. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] The present invention provides an air conditioning system, please refer to Figures 1 to 3 , including a condenser 20 and an evaporator 10 connected and communicated in sequence, the air-conditioning system also includes a first fan 30, so that air flows through the evaporator 10 under the action of the first fan 30, and the air-conditioning system also includes: a first connecting pipe 40, a first end of the first connecting pipe 40 is connected to the outlet of the condenser 20, and a second end of the first connecting pipe 40 is connected to the outlet of the evaporator 10; a radiator 50, which is arranged on the first connecting pipe 40 and located between the first end and the second end of the first connecting pipe 40, and the pipe of the radiator 50 is connected to the first connecting pipe 40 so that the refrigerant flows through the pipe of the radiator 50, so that the radiator 50 dissipates heat to the to-be-cooled parts of the air-conditioning system; a first heat dissipation component 60, which is arranged on the first connecting pipe 40 and located on one side of the radiator 50, and the first heat dissipation component 60 is located on one side of the first fan 30, so that air flows through the first heat dissipation component 60 under the action of the first fan 30.

[0029] The air conditioning system of the present invention includes a condenser 20, an evaporator 10, a first fan 30, a first connecting pipe 40, a radiator 50, and a first heat dissipation component 60. The refrigerant liquid flowing out of the condenser 20 flows through the first connecting pipe 40 and then enters the pipe of the radiator 50, so that the radiator 50 dissipates heat from the components to be cooled in the air conditioning system. However, when the air conditioning system is in shutdown or fluorine pump cooling mode, the cold energy of the low-temperature liquid refrigerant or outdoor cold air is easily transferred to the radiator 50 through the pipe. The first fan 30 of the air conditioning system blows indoor air toward the first heat dissipation component 60, and the first heat dissipation component 60 exchanges heat with the indoor air. The first heat dissipation component 60 absorbs heat and transfers the heat to the radiator 50, causing the temperature of the radiator 50 to rise, thereby preventing the surface temperature of the radiator 50 from falling below the dew point of the air to form condensation water. This in turn prevents the condensation water from damaging the intelligent power module, thereby improving the safety of the intelligent power module. Moreover, in the compression refrigeration mode, refrigerant generally flows through the first connecting pipe 40. At this time, the air driven by the first fan 30 actually exchanges heat with the first connecting pipe 40 provided with the first heat dissipation component 60. Its main function is to prevent the refrigerant at the outlet of the first connecting pipe 40 from appearing in the form of liquid refrigerant. If too much liquid refrigerant enters the gas-liquid separator or directly enters the air intake of the compressor, it is easy to cause the risk of liquid hammer to the compressor, so the first heat dissipation component 60 will be added.

[0030] Specifically, the component to be cooled is an intelligent power module (IPM), and the air conditioning system is a fluorine pump air conditioning system. When the air conditioning system is in fluorine pump cooling mode, the IPM generates less heat, and accordingly, the cooling capacity required by radiator 50 can be much smaller, or even non-operating, requiring no cooling. However, the low-temperature outdoor liquid refrigerant pumped by the fluorine pump is easily transferred to radiator 50. By providing a first heat dissipation component 60, this air conditioning system solves the existing problem of condensation forming on the radiator surface used to dissipate heat from the IPM in fluorine pump air conditioning systems, posing a serious safety threat to the IPM.

[0031] Specifically, the first heat dissipation component 60 is arranged between the second end of the first connecting pipe 40 and the radiator 50; the first heat dissipation component 60 is located within the wind coverage range of the first fan 30, so that the indoor air flows through the first heat dissipation component 60 under the action of the first fan 30.

[0032] In specific implementation, when the air-conditioning system is in compression cooling mode, the refrigerant liquid flow rate flowing through the radiator 50 is relatively large. The refrigerant liquid flowing out of the condenser 20 flows through the first connecting pipe 40 and then enters the pipe of the radiator 50, so that the radiator 50 dissipates heat to the parts to be cooled in the air-conditioning system. After flowing out of the radiator 50, the refrigerant liquid flows into the first connecting pipe 40 provided with a first heat dissipation component 60. The first fan 30 blows the indoor air toward the first heat dissipation component 60 to evaporate and gasify the refrigerant liquid in the first connecting pipe 40, thereby avoiding the appearance of liquid refrigerant at the outlet of the first connecting pipe 40, and avoiding excessive liquid refrigerant entering the gas-liquid separator 190 or directly entering the compressor 150, thereby ensuring the safe operation of the compressor 150.

[0033] Specifically, the first connecting pipe 40 includes a first heat dissipation pipe section 61 ; the first heat dissipation component 60 includes a plurality of first heat dissipation fins 62 , which are all arranged on the first heat dissipation pipe section 61 and arranged in sequence along the extension direction of the first heat dissipation pipe section 61 .

[0034] During specific implementation, the first fan 30 blows the indoor air toward the first heat dissipation pipe section 61, and the multiple first heat dissipation fins 62 increase the heat exchange area between the first heat dissipation pipe section 61 and the air, ensuring that the first heat dissipation pipe section 61 can fully absorb the heat of the air and transfer the heat to the low-temperature refrigerant in the first connecting pipe 40, preventing the appearance of refrigerant liquid at the outlet of the first connecting pipe 40.

[0035] Optionally, the first heat sink 62 includes ribs and fins.

[0036] Specifically, the air-conditioning system also includes: a cooling capacity regulating device 70, which is arranged on the first connecting pipe 40 or located on the side of the first connecting pipe 40, and the cooling capacity regulating device 70 is located between the first end of the first connecting pipe 40 and the radiator 50; a controller, which is communicated with the cooling capacity regulating device 70 so that the controller controls the cooling capacity regulating device 70 to adjust the cooling capacity entering the radiator 50 according to the temperature of the part to be cooled.

[0037] During specific implementation, the air-conditioning system also includes a temperature sensor. When the air-conditioning system is in compression cooling mode, the heat generation of the part to be cooled fluctuates. The temperature sensor monitors the surface temperature of the part to be cooled in real time and feeds back the surface temperature to the controller. The controller controls the cooling capacity regulating device 70 to adjust the cooling capacity entering the radiator 50, so that the cooling capacity supplied by the radiator 50 to the part to be cooled can be accurately adjusted according to the surface temperature of the part to be cooled, avoiding overheating of the part to be cooled or the surface temperature being lower than the air dew point temperature, avoiding the formation of condensation water on the surface of the radiator 50, and ensuring the safe operation of the controller.

[0038] Specifically, the cooling capacity regulating device 70 includes two specific implementations:

[0039] A specific implementation of the cooling capacity regulating device 70 is that the cooling capacity regulating device 70 is a control valve 71 with adjustable opening. The control valve 71 is arranged on the first connecting pipe 40 so that the controller controls the opening of the control valve 71 according to the temperature of the part to be cooled to adjust the refrigerant flow through the radiator 50.

[0040] During specific implementation, the controller controls the opening of the control valve 71 according to the surface temperature of the part to be cooled. When the surface temperature of the part to be cooled rises, the opening of the control valve 71 increases, the flow rate of the refrigerant liquid flowing into the radiator 50 increases, the cooling capacity entering the radiator 50 increases, and the cooling capacity supplied by the radiator 50 to the part to be cooled increases; when the surface temperature of the part to be cooled drops, the opening of the control valve 71 decreases, the flow rate of the refrigerant liquid flowing into the radiator 50 decreases, the cooling capacity entering the radiator 50 decreases, and the cooling capacity supplied by the radiator 50 to the part to be cooled decreases, so that the cooling capacity supplied by the radiator 50 to the part to be cooled can be accurately adjusted according to the surface temperature of the part to be cooled, thereby avoiding the formation of condensation water on the surface of the radiator 50 when the surface temperature of the part to be cooled is lower than the air dew point temperature.

[0041] Another specific embodiment of the cooling capacity regulating device 70 is that the first connecting pipe 40 includes a second heat dissipation pipe section 41, and the second heat dissipation pipe section 41 is located between the first end of the first connecting pipe 40 and the radiator 50; the cooling capacity regulating device 70 includes a fan 73, and the fan 73 is arranged on the side of the first connecting pipe 40, and the fan 73 is rotatably arranged so that air flows through the second heat dissipation pipe section 41 under the action of the fan 73; wherein, the speed of the fan 73 is adjustable so that the controller controls the speed of the fan 73 according to the temperature of the part to be cooled to adjust the temperature of the refrigerant flowing through the radiator 50.

[0042] During specific implementation, the refrigerant liquid flowing out of the condenser 20 flows into the first end of the first connecting pipe 40, flows through the second heat dissipation pipe section 41, and the fan 73 blows the indoor air to the second heat dissipation pipe section 41. The refrigerant liquid flows out of the second heat dissipation pipe section 41 and enters the pipe of the radiator 50. The controller controls the speed of the fan 73 according to the temperature of the part to be cooled. When the surface temperature of the part to be cooled rises, the speed of the fan 73 decreases, the flow rate of the air near the second heat dissipation pipe section 41 decreases, the rate of heat exchange between the second heat dissipation pipe section 41 and the air decreases, the amount of cold carried away by the external air on the second heat dissipation pipe section 41 is less, the amount of cold entering the radiator 50 is increased, and the amount of cold supplied by the radiator 50 to the part to be cooled is increased; when the surface temperature of the part to be cooled drops, the speed of the fan 73 increases, the flow rate of the air near the second heat dissipation pipe section 41 increases, the rate of heat exchange between the second heat dissipation pipe section 41 and the air is increased, the amount of cold carried away by the external air on the second heat dissipation pipe section 41 is more, the amount of cold entering the radiator 50 is reduced, and the amount of cold supplied to the part to be cooled by the radiator 50 is reduced, so that the amount of cold supplied to the part to be cooled by the radiator 50 can be accurately adjusted according to the surface temperature of the part to be cooled, thereby avoiding the formation of condensation water on the surface of the radiator 50 when the surface temperature of the part to be cooled is lower than the dew point temperature of the air.

[0043] In another specific embodiment of the cooling capacity regulating device 70, the cooling capacity regulating device 70 also includes a second heat dissipation component 74, which is arranged on the second heat dissipation pipe segment 41; wherein, the second heat dissipation component 74 includes a plurality of second heat dissipation fins 75, and the plurality of second heat dissipation fins 75 are all arranged on the second heat dissipation pipe segment 41 and are arranged in sequence along the extension direction of the second heat dissipation pipe segment 41; when the air-conditioning system is in shutdown or fluorine pump cooling mode, the second heat dissipation pipe segment 41 is heated in advance by the heat conduction effect of the second heat dissipation component 74 to offset the cold flowing into the first connecting pipe 40, thereby preventing the cold from being conducted to the radiator 50 and the IPM module.

[0044] In a specific implementation, the plurality of second heat sinks 75 increase the heat exchange area between the second heat sink pipe segment 41 and the air, ensuring that the second heat sink pipe segment 41 can fully exchange heat with the air. This allows the cold air on the second heat sink pipe segment 41 to be carried away by the air, thereby reducing the cold air entering the radiator 50. Optionally, the second heat sink 75 includes ribs and fins.

[0045] In another specific embodiment of the cooling capacity adjustment device 70, the air conditioning system further includes a valve component 80 disposed on the first connecting pipe 40 and located between the first end of the first connecting pipe 40 and the second heat dissipation pipe segment 41. The valve component 80 is a first one-way valve or a valve that can be switched on and off. When the valve component 80 is the first one-way valve, the first one-way valve is open in the direction from the first end of the first connecting pipe 40 to the second heat dissipation pipe segment 41. Optionally, the valve is a solenoid valve.

[0046] In specific implementation, when the air conditioning system is in fluorine pump mode, the pressure at the first end of the first connecting pipe 40 is greater than the pressure at the second heat dissipation pipe segment 41, and the first one-way valve is open in the direction from the first end of the first connecting pipe 40 to the second heat dissipation pipe segment 41. Therefore, when the valve component 80 is disconnected, or the first one-way valve is disconnected in the direction from the second heat dissipation pipe segment 41 to the first end of the first connecting pipe 40, the refrigerant at the outlet of the evaporator 10 cannot flow from the second end of the first connecting pipe 40 through the second heat dissipation pipe segment 41 and into the first end of the first connecting pipe 40, thereby ensuring that the refrigerant at the outlet of the evaporator 10 can only pass through the condenser 20 for heat exchange. The first one-way valve does not require external control and is self-controlled by the pressure difference of the fluid, which is convenient for users.

[0047] Specifically, a portion of the first connecting pipe 40 is a capillary tube 46, which is located between the first end of the first connecting pipe 40 and the heat sink 50. In practice, the capillary tube 46 has a very small cross-sectional area and a low heat transfer capacity. This makes it difficult for outdoor cooling to be transferred to the IPM module during long periods of shutdown, and also serves to prevent condensation on the surface of the IPM module.

[0048] In a specific implementation, the capillary tube 46 is located between the second heat dissipation component 74 and the valve component 80; and / or, the capillary tube 46 is located between the control valve 71 and the radiator 50. The capillary tube 46 has a small heat conduction area and a higher thermal resistance, thereby blocking most of the cooling energy transferred to the radiator 50, further preventing the surface temperature of the radiator 50 from falling below the air dew point and causing condensation.

[0049] Specifically, the air conditioning system further includes: a throttle valve 160, the outlet of the throttle valve 160 is connected to the inlet of the evaporator 10; a second one-way valve 170, which is connected in the direction from the outlet of the condenser 20 to the inlet of the evaporator 10; a fluorine pump 130, the fluorine pump 130 and the second one-way valve 170 are arranged in parallel between the inlet of the throttle valve 160 and the outlet of the condenser 20; a third one-way valve 180, which is connected in the direction from the outlet of the evaporator 10 to the inlet of the condenser 20; a compressor 150, which is connected in the direction from the outlet of the evaporator 10 to the inlet of the condenser 20; The compressor 150 and the third one-way valve 180 are arranged in parallel between the outlet of the evaporator 10 and the inlet of the condenser 20; wherein the first end of the first connecting pipe 40 is located between the outlet of the condenser 20 and the second one-way valve 170; or, the first end of the first connecting pipe 40 is located between the inlet of the throttle valve 160 and the second one-way valve 170, so that the first end of the first connecting pipe 40 is connected to the outlet of the condenser 20 through the second one-way valve 170; the second end of the first connecting pipe 40 is located between the outlet of the evaporator 10 and the third one-way valve 180.

[0050] In a specific implementation, the throttle valve 160 is used to throttle the refrigerant liquid entering the evaporator 10 .

[0051] Specifically, the air-conditioning system also includes: a second connecting pipe 110, the first end of the second connecting pipe 110 is connected to the first connecting pipe 40 and is located on the side of the radiator 50 close to the first end of the first connecting pipe 40; the second end of the second connecting pipe 110 is located between the outlet of the third one-way valve 180 and the inlet of the condenser 20; a fourth one-way valve 120 is arranged on the second connecting pipe 110, and the fourth one-way valve 120 is connected in the direction from the first end to the second end of the second connecting pipe 110.

[0052] In specific implementation, when the air-conditioning system is in the fluorine pump refrigeration mode, a small amount of low-temperature refrigerant gas at the outlet of the evaporator 10 enters the radiator 50 from the first heat dissipation component 60 and flows out from the fourth one-way valve 120, and finally mixes with the refrigerant gas at the outlet of the third one-way valve 180 again. This small amount of refrigerant gas is reheated by the indoor air at the first heat dissipation component 60, which can keep the radiator 50 warm and prevent condensation from occurring in the radiator 50.

[0053] Specifically, the air-conditioning system also includes: a liquid storage part 90, having a liquid storage chamber 91 for storing refrigerant and a liquid inlet 92 and a liquid outlet 93 connected to the liquid storage chamber 91, the liquid inlet 92 is connected to the outlet of the condenser 20, the liquid outlet 93 is connected to the inlet of the second one-way valve 170 and to the inlet of the fluorine pump 130; and / or, a gas-liquid separator 190, the inlet of the gas-liquid separator 190 is connected to the outlet of the evaporator 10, and the outlet of the gas-liquid separator 190 is connected to the inlet of the compressor 150; wherein, the inlet of the third one-way valve 180 is located between the outlet of the evaporator 10 and the inlet of the gas-liquid separator 190.

[0054] During specific implementation, the gas-liquid separator 190 is used to separate the refrigerant liquid and gas, preventing the refrigerant liquid that has not yet evaporated from the outlet of the evaporator 10 from entering the compressor 150, or preventing the refrigerant liquid flowing out of the first connecting pipe 40 from entering the compressor 150. At the same time, the first fan 30 blows the indoor air toward the first heat dissipation component 60 to evaporate and gasify the refrigerant liquid in the first heat dissipation component 60, thereby reducing the flow rate of liquid refrigerant entering the gas-liquid separator 190.

[0055] In specific implementation, the main function of the first heat dissipation component 60 and the second heat dissipation component 74 is to process the excess cold passing through the first connecting pipe 40, wherein the first heat dissipation component 60 prevents the excess cold from entering the compressor 150, and the second heat dissipation component 74 prevents the excess cold from entering the radiator 50.

[0056] Example 1

[0057] In this embodiment, if Figure 1As shown, the cooling capacity regulating device 70 is a control valve 71 , and the capillary tube 46 is located between the control valve 71 and the radiator 50 . When the air-conditioning system is in compression cooling mode, the compressor 150 is running, the second one-way valve 170 is connected, and the third one-way valve 180 is not connected. The first end of the first connecting pipe 40 is located between the outlet of the condenser 20 and the second one-way valve 170. The refrigerant cycle is: compressor 150 → condenser 20 → liquid storage part 90 → (second one-way valve 170 → throttle valve 160 → evaporator 10) / (control valve 71 → capillary tube 46 → radiator 50 → first heat dissipation component 60) → gas-liquid separator 190 → compressor 150; when the air-conditioning system is in fluorine pump cooling mode, the compressor 150 stops running, the second one-way valve 170 is not connected, and the third one-way valve 180 is connected. The refrigerant cycle is: fluorine pump 130 → throttle valve 160 → evaporator 10 → third one-way valve 180 → condenser 20 → liquid storage part 90 → fluorine pump 130.

[0058] Example 2

[0059] In this embodiment, if Figure 2 As shown, the cooling capacity regulating device 70 is a control valve 71, and the capillary tube 46 is located between the control valve 71 and the radiator 50. The difference between this embodiment and the first embodiment is that the first end of the first connecting pipe 40 is located between the inlet of the throttle valve 160 and the second one-way valve 170, the first end of the second connecting pipe 110 is connected to the first connecting pipe 40 and is located on the side of the radiator 50 close to the first connecting pipe 40, the second end of the second connecting pipe 110 is located between the outlet of the third one-way valve 180 and the inlet of the condenser 20, and the fourth one-way valve 120 is arranged on the second connecting pipe 110.

[0060] When the air-conditioning system is in compression cooling mode, the compressor 150 is running, the second one-way valve 170 is open, the third one-way valve 180 is not open, and the fourth one-way valve 120 is not open. The refrigerant cycle is: compressor 150 → condenser 20 → liquid storage part 90 → second one-way valve 170 → (throttle valve 160 → evaporator 10) / (control valve 71 → capillary tube 46 → radiator 50 → first heat dissipation component 60) → gas-liquid separator 190 → compressor 150; when the air-conditioning system is in fluorine pump cooling mode, the compressor 150 stops running, the second one-way valve 170 is not open, the third one-way valve 180 is open, and the fourth one-way valve 120 is open. The refrigerant cycle is: fluorine pump 130 → throttle valve 160 → evaporator 10 → (third one-way valve 180) / (first heat dissipation component 60 → radiator 50 → fourth one-way valve 120) → condenser 20 → liquid storage part 90 → fluorine pump 130.

[0061] Example 3

[0062] like Figure 3As shown, this embodiment differs from the first embodiment in that the cooling capacity adjustment device 70 has a different structure and is provided with a valve component 80. Specifically, the cooling capacity adjustment device 70 includes a fan 73 and a second heat dissipation component 74, and the capillary tube 46 is located between the second heat dissipation component 74 and the valve component 80.

[0063] When the air-conditioning system is in compression cooling mode, the compressor 150 is running, the first one-way valve (valve component 80) is open, the second one-way valve 170 is open, and the third one-way valve 180 is closed. The refrigerant cycle is: compressor 150 → condenser 20 → liquid storage part 90 → (second one-way valve 170 → throttle valve 160 → evaporator 10) / (first one-way valve (valve component 80) → capillary tube 46 → second heat dissipation component 74 → radiator 50 → first heat dissipation component 60) → gas-liquid separator 190 → compressor 150; when the air-conditioning system is in fluorine pump cooling mode, the compressor 150 stops running, the first one-way valve (valve component 80) is closed, the second one-way valve 170 is closed, and the third one-way valve 180 is open. The refrigerant cycle is: fluorine pump 130 → throttle valve 160 → evaporator 10 → third one-way valve 180 → condenser 20 → liquid storage part 90 → fluorine pump 130.

[0064] In specific implementation, the working principle of the air conditioning system is:

[0065] like Figure 1 and Figure 2 As shown, when the air conditioning system is in compression cooling mode, the heat generated by the part to be cooled fluctuates due to changes in operating conditions or control needs. The surface temperature of the part to be cooled obtained by the temperature sensor determines the cooling capacity supplied by the radiator 50 and changes accordingly. The control valve 71 is a key component for the radiator 50 to provide cooling capacity change regulation. When the temperature of the part to be cooled rises, the opening of the control valve 71 increases, and vice versa. In this mode, the first heat dissipation component 60 exchanges heat with the air driven by the first fan 30, and the refrigerant at the first heat dissipation component 60 is heated again to ensure that this part of the refrigerant is fully vaporized. When the part to be cooled is not working (no heat is dissipated at this time, such as in the fluorine pump cooling mode or the shutdown state), the control valve 71 is closed, which mainly solves the problem of excessive cooling capacity of the part to be cooled due to excessive flow in the capillary tube 46, which may form condensation water.

[0066] like Figure 3As shown, the speed of fan 73 is determined by the surface temperature of the part to be cooled, as measured by the temperature sensor. When the temperature of the part to be cooled rises, the fan speed decreases, and vice versa. The principle is to regulate the cooling capacity supplied to the part to be cooled by dissipating heat from the fan: at low fan speeds, the flow rate of hot air outside the second heat sink 74 is low, reducing the heat exchange of the second heat sink 74 and allowing more low-temperature refrigerant to enter the radiator 50 for cooling. At high fan speeds, more cooling capacity is dissipated by the external hot air from the second heat sink 74, resulting in less cooling capacity supplied to the radiator 50. This allows for intelligent regulation of the operating temperature of the part to be cooled, primarily addressing the issue of excessive cooling capacity for the part to be cooled, which may result in condensation, caused by excessive flow in the capillary tube 46.

[0067] When the air conditioning system is in fluorine pump cooling mode, the liquid refrigerant returning from the outdoor condenser 20 is very cold. This cold refrigerant is transferred through the refrigerant piping to the radiator 50, causing its surface temperature to drop too low. When the surface temperature of the radiator 50 falls below the dew point of the surrounding air, condensation forms on these surfaces, posing a serious threat to the safety of the controller. Similarly, if the fluorine pump air conditioner is shut down for extended periods in cold weather, the cold air from the outdoor air may be transferred through the refrigerant piping to the radiator 50, potentially causing condensation.

[0068] When the air-conditioning system is in the fluorine pump cooling mode, the low-temperature refrigerant liquid cooled by the outdoor condenser 20 is driven by the fluorine pump 130 to enter the evaporator 10 to absorb heat and vaporize. At this time, the coldness of the low-temperature refrigerant liquid near the second one-way valve 170 and the fluorine pump 130 may be conducted to the radiator 50; the low-temperature refrigerant between the outlet of the evaporator 10 and the inlet of the third one-way valve 180 may also be conducted to the radiator 50 through the refrigerant pipe where the first heat dissipation component 60 is located. When control valve 71 is closed, it prevents low-temperature refrigerant liquid from entering the radiator 50 through the capillary tube. At this point, the capillary tube 46 blocks the flow of cold air, allowing only a small amount of cold air to pass through. The first fins 62 on the surface of the first heat sink 60 absorb heat from the higher-temperature air driven by the first fan 30, heating the first heat sink 60 and preventing the radiator 50 from cooling too low, thereby preventing condensation. During extended shutdown periods in cold weather, cold air from the outside air is transferred to the radiator 50 through the refrigerant pipes. The capillary tube 46, with its small conduction area, blocks most of the cold air, thus closing control valve 71. Because the system is in shutdown mode, the first fan 30 is also inoperative, and there is no air circulation on the surface of the first heat sink 60. To prevent condensation on the surface of the radiator 50, only the first fan 30 is allowed to operate upon restart to heat the first heat sink 60. This flow of warm indoor air heats the first heat sink 60 and replaces the air in the controller, evaporating any condensation and ensuring the safety of the controller.

[0069] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0070] The air conditioning system of the present invention includes a condenser 20, an evaporator 10, a first fan 30, a first connecting pipe 40, a radiator 50, and a first heat dissipation component 60. The refrigerant liquid flowing out of the condenser 20 flows through the first connecting pipe 40 and then enters the pipe of the radiator 50, so that the radiator 50 dissipates heat from the components to be cooled in the air conditioning system. However, when the air conditioning system is in shutdown or fluorine pump cooling mode, the cold energy of the low-temperature liquid refrigerant or outdoor cold air is easily transferred to the radiator 50 through the pipe. The first fan 30 of the air conditioning system blows indoor air toward the first heat dissipation component 60, and the first heat dissipation component 60 exchanges heat with the indoor air. The first heat dissipation component 60 absorbs heat and transfers the heat to the radiator 50, causing the temperature of the radiator 50 to rise, thereby preventing the surface temperature of the radiator 50 from falling below the dew point of the air to form condensation water. This in turn prevents the condensation water from damaging the intelligent power module, thereby improving the safety of the intelligent power module. Moreover, in the compression refrigeration mode, refrigerant generally flows through the first connecting pipe 40. At this time, the air driven by the first fan 30 actually exchanges heat with the first connecting pipe 40 provided with the first heat dissipation component 60. Its main function is to prevent the refrigerant at the outlet of the first connecting pipe 40 from appearing in the form of liquid refrigerant. If too much liquid refrigerant enters the gas-liquid separator or directly enters the air intake of the compressor, it is easy to cause the risk of liquid hammer to the compressor, so the first heat dissipation component 60 will be added.

[0071] The air-conditioning system of the present invention solves the problem of cooling cycle design and optimization of the parts to be cooled when the air-conditioning system is in compression refrigeration mode; and solves the problem of condensation easily forming when the low-temperature liquid refrigerant or outdoor cold air transfers cold energy to the radiator 50 when the air-conditioning system is in fluorine pump refrigeration mode.

[0072] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0073] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0074] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An air conditioning system, comprising a condenser (20) and an evaporator (10) connected in sequence and in communication, the air conditioning system further comprising a first fan (30) so that air flows through the evaporator (10) under the action of the first fan (30), characterized in that: The air conditioning system further comprises: a first connecting pipe (40), wherein a first end of the first connecting pipe (40) is connected to the outlet of the condenser (20), and a second end of the first connecting pipe (40) is connected to the outlet of the evaporator (10); a radiator (50) disposed on the first connecting pipe (40) and located between the first end and the second end of the first connecting pipe (40); a pipe of the radiator (50) is connected to the first connecting pipe (40) so that refrigerant flows through the pipe of the radiator (50), so that the radiator (50) dissipates heat for the component to be cooled of the air-conditioning system; a first heat dissipation component (60) disposed on the first connecting pipe (40) and located on one side of the radiator (50); the first heat dissipation component (60) is located on one side of the first fan (30) so that air flows through the first heat dissipation component (60) under the action of the first fan (30); The first heat dissipation component (60) is arranged between the second end of the first connecting pipe (40) and the radiator (50); a throttle valve (160), wherein an outlet of the throttle valve (160) is connected to an inlet of the evaporator (10); a second one-way valve (170), the second one-way valve (170) being open in a direction from the outlet of the condenser (20) to the inlet of the evaporator (10); a fluorine pump (130), wherein the fluorine pump (130) and the second one-way valve (170) are arranged in parallel between the inlet of the throttle valve (160) and the outlet of the condenser (20); A third one-way valve (180), the third one-way valve (180) is open in a direction from the outlet of the evaporator (10) to the inlet of the condenser (20); A compressor (150), wherein the compressor (150) and the third one-way valve (180) are arranged in parallel between the outlet of the evaporator (10) and the inlet of the condenser (20); The first end of the first connecting pipe (40) is located between the outlet of the condenser (20) and the second one-way valve (170); or the first end of the first connecting pipe (40) is located between the inlet of the throttle valve (160) and the second one-way valve (170), so that the first end of the first connecting pipe (40) is connected to the outlet of the condenser (20) through the second one-way valve (170); The second end of the first connecting pipe (40) is located between the outlet of the evaporator (10) and the third one-way valve (180).

2. The air conditioning system according to claim 1, characterized in that The first connecting pipe (40) includes a first heat dissipation pipe section (61); the first heat dissipation component (60) includes a plurality of first heat dissipation fins (62); the plurality of first heat dissipation fins (62) are all arranged on the first heat dissipation pipe section (61) and are arranged in sequence along the extension direction of the first heat dissipation pipe section (61).

3. The air conditioning system according to claim 1 or 2, characterized in that: The air conditioning system further comprises: a cooling capacity regulating device (70), the cooling capacity regulating device (70) being arranged on the first connecting pipe (40) or located on the side of the first connecting pipe (40), the cooling capacity regulating device (70) being located between the first end of the first connecting pipe (40) and the radiator (50); The controller is in communication with the cooling capacity regulating device (70), so that the controller controls the cooling capacity regulating device (70) to regulate the cooling capacity entering the radiator (50) according to the temperature of the part to be cooled.

4. The air conditioning system according to claim 3, characterized in that The cooling capacity regulating device (70) is a control valve (71) with adjustable opening, and the control valve (71) is arranged on the first connecting pipe (40), so that the controller controls the opening of the control valve (71) according to the temperature of the component to be cooled, so as to regulate the flow of refrigerant flowing through the radiator (50).

5. The air conditioning system according to claim 3, characterized in that The first connecting pipe (40) includes a second heat dissipation pipe section (41), and the second heat dissipation pipe section (41) is located between the first end of the first connecting pipe (40) and the radiator (50); the cooling capacity regulating device (70) includes a fan (73), and the fan (73) is arranged on the side of the first connecting pipe (40). The fan (73) is rotatably arranged so that air flows through the second heat dissipation pipe section (41) under the action of the fan (73); The rotation speed of the fan (73) is adjustable so that the controller controls the rotation speed of the fan (73) according to the temperature of the part to be cooled, thereby adjusting the temperature of the refrigerant flowing through the radiator (50).

6. The air conditioning system according to claim 5, characterized in that The cooling capacity regulating device (70) further includes a second heat dissipation component (74), which is arranged on the second heat dissipation pipe section (41); wherein the second heat dissipation component (74) includes a plurality of second heat dissipation fins (75), and the plurality of second heat dissipation fins (75) are all arranged on the second heat dissipation pipe section (41) and are arranged in sequence along the extension direction of the second heat dissipation pipe section (41).

7. The air conditioning system according to claim 5, characterized in that The air conditioning system further comprises: A valve component (80) is provided on the first connecting pipe (40) and is located between the first end of the first connecting pipe (40) and the second heat dissipation pipe section (41); wherein the valve component (80) is a first one-way valve or a valve that can be opened and closed. When the valve component (80) is the first one-way valve, the first one-way valve is open in the direction from the first end of the first connecting pipe (40) to the second heat dissipation pipe section (41).

8. The air conditioning system according to claim 1 or 2, characterized in that: A partial section of the first connecting tube (40) is a capillary tube (46), and the capillary tube (46) is located between the first end of the first connecting tube (40) and the radiator (50).

9. The air conditioning system according to claim 1, characterized in that The air conditioning system further comprises: a second connecting pipe (110), wherein a first end of the second connecting pipe (110) is connected to the first connecting pipe (40) and is located on a side of the radiator (50) close to the first end of the first connecting pipe (40); and a second end of the second connecting pipe (110) is located between the outlet of the third one-way valve (180) and the inlet of the condenser (20); The fourth one-way valve (120) is arranged on the second connecting pipe (110), and the fourth one-way valve (120) is open in the direction from the first end to the second end of the second connecting pipe (110).

10. The air conditioning system according to claim 1, wherein: The air conditioning system further comprises: a liquid storage portion (90) having a liquid storage cavity (91) for storing refrigerant, and a liquid inlet (92) and a liquid outlet (93) connected to the liquid storage cavity (91), the liquid inlet (92) being connected to the outlet of the condenser (20), and the liquid outlet (93) being connected to the inlet of the second one-way valve (170) and the inlet of the fluorine pump (130); and / or, A gas-liquid separator (190), wherein the inlet of the gas-liquid separator (190) is connected to the outlet of the evaporator (10), and the outlet of the gas-liquid separator (190) is connected to the inlet of the compressor (150); wherein the inlet of the third one-way valve (180) is located between the outlet of the evaporator (10) and the inlet of the gas-liquid separator (190).

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