Air conditioning system

Abstract

The utility model relates to an air conditioning system which comprises a condenser, an evaporator, a compressor and a compressor refrigeration assembly, the condenser, the evaporator and the compressor are sequentially connected to form a circulation loop, and the compressor comprises a driving module. The compressor refrigeration assembly comprises a refrigeration branch which is connected to the circulation loop in parallel with the evaporator, and a first control valve and a heat dissipation device which are arranged on the refrigeration branch, and the heat dissipation device is arranged on one side of the driving module of the compressor and provided with a first refrigerant channel communicated with the part, provided with the evaporator, of the circulation loop. The flow of the refrigerant entering the refrigeration branch is controlled through the first control valve, so that accurate heat dissipation of the driving module of the compressor can be controlled, and the risk of condensation of the driving module of the compressor is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning equipment, and particularly to an air conditioning system. Background Art

[0002] In recent years, with the rapid development of new technologies such as 5G, cloud computing, big data, and artificial intelligence, the number and scale of data centers have become larger and larger, and the corresponding energy consumption has also increased. To reduce the energy consumption of data centers, the fluorine pump technology, as an energy-saving technology, has been increasingly applied to the cooling field of data centers, providing a technical direction for energy conservation and consumption reduction in data centers.

[0003] Whether the heat dissipation of the drive module of the refrigeration compressor in the fluorine pump air conditioning system is appropriate directly affects the working stability of the refrigeration compressor. In the related art, the heat dissipation of the drive module of the compressor in the fluorine pump air conditioning system is inaccurate, which easily leads to condensation of the drive module of the refrigeration compressor, affecting the reliability of the drive module of the refrigeration compressor and the working stability of the refrigeration compressor. Summary of the Utility Model

[0004] Based on this, an air conditioning system is provided, which can accurately dissipate heat from the drive module of the compressor, reduce the risk of condensation of the drive module of the refrigeration compressor, improve the reliability of the drive module of the refrigeration compressor, and improve the working stability of the refrigeration compressor.

[0005] An air conditioning system, the air conditioning system comprising:

[0006] A condenser, an evaporator, and a compressor, the condenser, the evaporator, and the compressor are connected in sequence to form a circulation loop; the compressor includes a drive module; and

[0007] A compressor refrigeration component, including a refrigeration branch connected in parallel with the evaporator on the circulation loop, and a first control valve and a heat dissipation device provided on the refrigeration branch, the heat dissipation device is provided on one side of the drive module of the compressor, and has a first refrigerant channel communicating with a part of the circulation loop where the evaporator is provided.

[0008] In one embodiment, the compressor refrigeration component further includes a heat exchanger provided on the refrigeration branch, the heat exchanger has a second refrigerant channel communicating with the first refrigerant channel, and a heat exchange channel capable of exchanging heat with the second refrigerant channel;

[0009] The heat exchange channel communicates between the refrigerant outlet of the compressor and the refrigerant inlet of the condenser.

[0010] In one embodiment, the compression refrigeration assembly further includes a first temperature sensor, a second temperature sensor, and a controller. The controller is electrically connected to the first temperature sensor and the second temperature sensor respectively;

[0011] The first temperature sensor is disposed on the driving module of the compressor for detecting a first temperature value of the driving module of the compressor;

[0012] The second temperature sensor is disposed at the input end of the heat dissipation device for detecting a second temperature value of the refrigerant flowing into the heat dissipation device;

[0013] The controller is electrically connected to the first control valve and is configured to adjust the opening degree of the first control valve according to the first temperature value sensed by the first temperature sensor and the second temperature value sensed by the second temperature sensor.

[0014] In one embodiment, the compression refrigeration assembly further includes a third temperature sensor. The third temperature sensor is used to detect the dew point temperature of the environment where the air conditioning system is located to obtain a third temperature value;

[0015] When the first temperature value S1 detected by the first temperature sensor is greater than a preset temperature value, and the detected first temperature value S1, the second temperature value S2, and the third temperature value S3 satisfy: S2≥S3 + 3°C, the controller is used to control the opening degree of the first control valve to be in an increasing state.

[0016] In one embodiment, when the detected first temperature value S1, the second temperature value S2, and the third temperature value S3 satisfy: S2≤S3 + 3°C, the controller is used to control the opening degree of the first control valve to remain unchanged.

[0017] In one embodiment, when the first temperature value S1, the second temperature value S2, and the third temperature value S3 satisfy: S2≥S3 + 3°C, and the first temperature value S1 is less than the preset temperature value, the controller is used to control the opening degree of the first control valve to be in a decreasing state.

[0018] In one embodiment, the air conditioning system includes a valve branch. The input end of the valve branch is communicated with the refrigerant outlet of the evaporator, and the output end of the valve branch is communicated between the compressor and the heat exchanger;

[0019] A first one-way valve is provided on the valve branch.

[0020] In one embodiment, the air conditioning system includes an oil separator and an oil return capillary tube. The oil separator is provided at the refrigerant outlet of the compressor. One end of the oil return capillary tube is communicated with the oil outlet port of the oil separator, and the other end is communicated with the refrigerant inlet of the compressor.

[0021] In one embodiment, the air conditioning system includes a gas-liquid separator. The gas-liquid separator is provided between the evaporator and the compressor, and the input end of the gas-liquid separator is respectively communicated with the refrigeration branch and the evaporator.

[0022] In one embodiment, the air conditioning system includes a fluorine pump provided between the condenser and the evaporator, and a second one-way valve arranged in parallel with the fluorine pump.

[0023] The above air conditioning system is provided with a refrigeration branch to lead out part of the refrigerant to cool the drive module of the compressor through a heat dissipation device, without using all the refrigerant in the system to cool the drive module of the compressor, and controls the refrigerant flow rate entering the refrigeration branch through the first control valve, so as to be able to accurately cool the drive module of the compressor and reduce the risk of condensation of the drive module of the compressor. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the air conditioning system of the present application.

[0025] Figure 2 It is a simplified diagram of the heat exchange element of the present application.

[0026] Description of the Reference Numerals:

[0027] 10. Air conditioning system;

[0028] 1. Air conditioning indoor unit part; 2. Air conditioning outdoor unit part;

[0029] 100. Heat exchange element; 101. Heat dissipation device; 102. Compressor; 103. Oil separator; 104. Oil return capillary tube; 105. Gas-liquid separator; 106. First one-way valve; 107. Evaporator; 108. Second control valve; 109. First control valve; 110. Second refrigerant channel; 120. Heat exchange channel;

[0030] 200. Condenser; 201. Liquid receiver; 202. Second one-way valve; 203. Fluorine pump. Detailed Embodiments

[0031] To make the above objects, features, and advantages of the present application more apparent and understandable, the following describes the specific embodiments of the present application in detail with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present application.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0034] In the present application, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath", and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0036] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0037] In recent years, with the rapid development of new technologies such as 5G, cloud computing, big data, and artificial intelligence, the number and scale of data centers have become larger and larger, and the corresponding energy consumption has become more and more. To reduce the energy consumption of data centers, the fluorine pump 203 technology, as an energy-saving technology, is increasingly applied to the data center cooling field, providing a technical direction for the energy conservation and consumption reduction of data centers.

[0038] In the existing fluorine pump technology, the refrigeration compressor of the air conditioning system usually adopts a variable frequency refrigeration compressor, and the heat dissipation of the configured drive module is cooled by all the liquid refrigerant returned from the outdoor unit. In the related technology, the flow rate and temperature of the liquid refrigerant are not accurately temperature-controlled. When the temperature of the liquid refrigerant is relatively low (for example, when the fluorine pump is in the operating mode, the temperature of the liquid refrigerant is usually relatively low), and the temperature of the liquid-cooled refrigerant is lower than the dew point temperature of the ambient air, it will cause condensation of the drive module of the compressor, which will seriously affect the reliability of the drive module of the compressor.

[0039] In view of the above problems, the present application provides an air conditioning system 10 that can accurately dissipate heat from the drive module of the compressor 102 and reduce the condensation risk of the drive module of the compressor 102.

[0040] Refer to Figure 1 As shown, the air conditioning system 10 provided by the present application includes a condenser 200, an evaporator 107, a compressor 102, and a compressor refrigeration assembly. The condenser 200, the evaporator 107, and the compressor 102 are connected in sequence to form a circulation loop, and the compressor 102 includes a drive module. A refrigerant circulates in the circulation loop, and the refrigerant can be a refrigerant, etc. In the refrigeration mode of the compressor 102, the compressed refrigerant of the compressor 102 is in a gaseous state. After being compressed by the compressor 102, the refrigerant is in a high-temperature and high-pressure gaseous state. The high-temperature and high-pressure gaseous refrigerant is cooled by the condenser 200 to form a high-pressure and medium-temperature gaseous state or a state of coexistence of gas and liquid. At this time, the refrigerant quickly cools to become a low-temperature and low-pressure liquid after passing through the second control valve 108, and then blows out cold air through heat exchange with the evaporator 107 to reduce the room temperature, and then returns to the compressor 102 as a low-temperature and low-pressure gas, thus completing a cycle and repeating like this.

[0041] The compression refrigeration component includes a refrigeration branch connected in parallel to the evaporation chamber 107 on the circulation loop, and a first control valve 109 and a heat dissipation device 101 provided on the refrigeration branch. The heat dissipation device 101 is provided on one side of the drive module of the compressor 102 and has a first refrigerant passage communicating with the portion of the circulation loop where the evaporation chamber 107 is provided.

[0042] A part of the refrigerant cooled by the condenser 200 in the circulation loop enters the refrigeration branch and flows through the heat dissipation device 101, and the drive module of the compressor 102 is cooled by the heat dissipation device 101. It is not necessary to use all the refrigerant in the system to dissipate heat from the drive module of the compressor 102. A first control valve 109 is provided on the refrigeration branch, and the refrigerant flow rate entering the refrigeration branch is controlled by the first control valve 109, so as to be able to precisely dissipate heat from the drive module of the compressor 102 and reduce the risk of condensation on the drive module of the compressor 102.

[0043] Refer to Figure 1 and Figure 2 As shown, the compression refrigeration component further includes a heat exchanger 100 provided on the refrigeration branch. The heat exchanger 100 has a second refrigerant passage 110 communicating with the first refrigerant passage, and a heat exchange passage 120 capable of exchanging heat with the second refrigerant passage 110. The heat exchange passage 120 is connected between the refrigerant outlet of the compressor 102 and the refrigerant inlet of the condenser 200. The refrigerant flowing out of the refrigerant outlet of the compressor 102 is in a high-temperature and high-pressure state, so the refrigerant flowing in the heat exchange passage 120 connected to the refrigerant outlet of the compressor 102 is also in a high-temperature and high-pressure state. The heat exchange passage 120 exchanges heat with the second refrigerant passage 110, so that the refrigerant flowing in the second refrigerant passage 110 can be heated up, and further the refrigerant in the first refrigerant passage can be heated up, or in other words, the refrigerant in the first refrigerant passage can be preheated, so as to avoid the temperature of the refrigerant flowing in the first refrigerant passage being too low, resulting in condensation on the drive module of the compressor 102.

[0044] It can be understood that when the compressor 102 is refrigerating, the drive module of the compressor 102 generates heat, and it is necessary to use the refrigerant flowing in the first refrigerant passage of the heat dissipation device 101 to take away the heat in time to avoid damage to the electronic devices of the drive module of the compressor 102 due to overheating. If the temperature of the refrigerant flowing in the first refrigerant passage is too low, it is easy to cause condensation on the drive module of the compressor 102. The heat exchanger 100 is provided in this application, which can preheat the refrigerant flowing in the first refrigerant passage through the heat exchanger 100, and then the preheated refrigerant absorbs heat through phase change to cool the drive module of the compressor 102, so that the working temperature of the heat dissipation device 101 is not lower than the air dew point temperature of the working environment, thus avoiding condensation on the surface of the drive module of the compressor 102 due to the working temperature of the heat dissipation device 101 being too low and lower than the ambient air dew point temperature, which has a serious impact on the safety and reliability of the drive of the compressor 102.

[0045] For example Figure 2 , in some embodiments, the heat exchange channel 120 of the heat exchanger 100 is a straight pipe channel, as shown by the straight pipe section ab in Figure 2 . The second refrigerant channel 110 of the heat exchanger 100 is a serpentine pipe wound around the straight pipe channel, as shown by the pipe section cd wound around the outside of the straight pipe section ab in Figure 2 . The heat exchange channel 120 is connected between the refrigerant outlet of the compressor 102 and the refrigerant inlet of the condenser 200. The high-temperature and high-pressure gaseous refrigerant passing through the compressor 102 flows inside it. The low-temperature and low-pressure gas-liquid two-phase refrigerant flowing in the second refrigerant channel 110 absorbs heat, and the high-temperature and high-pressure gaseous refrigerant releases heat, realizing a wall-type heat exchange, heating the refrigerant in the second refrigerant channel 110, that is, preheating the refrigerant in the first refrigerant passage.

[0046] The compression refrigeration assembly further includes a first temperature sensor, a second temperature sensor and a controller. The controller is electrically connected to the first temperature sensor and the second temperature sensor respectively. The first temperature sensor is arranged on the drive module of the compressor 102 and is used to detect the first temperature value of the drive module of the compressor 102. The second temperature sensor is arranged at the input end of the heat dissipation device 101, such as it can be arranged at the input end of the first refrigerant channel, or it can also be arranged between the first refrigerant channel and the second refrigerant channel 110. The second temperature sensor is used to detect the second temperature value of the refrigerant flowing into the heat dissipation device 101. The controller is electrically connected to the first control valve 109 and is configured to be able to adjust the opening degree of the first control valve 109 according to the first temperature value sensed by the first temperature sensor and the second temperature value sensed by the second temperature sensor. It can be understood that the first temperature sensor and the second temperature sensor measure the temperature of the refrigerant in the drive module and the heat dissipation device 101 in real time, so as to control the opening degree of the first control valve 109, adjust the flow rate of the refrigerant entering the refrigeration branch, and further make the drive module within a suitable temperature range.

[0047] When the refrigeration demand of the air-conditioning system 10 increases, the frequency of the compressor 102 increases accordingly, and the heat generation of the drive module of the compressor 102 increases. At this time, the cooling load of the heat dissipation device 101 increases. To ensure that the drive module is within a normal and safe working temperature range, the controller controls to increase the opening degree of the first control valve 109 to increase the flow rate of the refrigerant entering the refrigeration branch. When the refrigeration demand of the air-conditioning system 10 decreases, the frequency of the drive module of the compressor 102 decreases accordingly, and the heat generation of the drive module of the compressor 102 decreases. At this time, the cooling load of the heat dissipation device 101 decreases. To ensure that the drive module is within a normal and safe working temperature range, the controller controls to decrease the opening degree of the first control valve 109 to decrease the flow rate of the refrigerant entering the refrigeration branch.

[0048] The compression refrigeration component further includes a third temperature sensor for detecting the dew point temperature of the environment of the air conditioning system 10 to obtain a third temperature value.

[0049] When the first temperature value S1 detected by the first temperature sensor is greater than the preset temperature value, and the detected first temperature value S1, second temperature value S2, and third temperature value S3 satisfy: S2≥S3 + 3°C, the controller is used to control the opening of the first control valve 109 to be in an increasing state. That is, at this time, the second temperature value S2 of the refrigerant in the first refrigerant passage of the heat dissipation device 101 is greater than or equal to the dew point temperature of the environment of the air conditioning system 10 plus 3°C, then the drive module of the compressor 102 will not condense. If it is detected that the first temperature value S1 of the drive module of the compressor 102 is greater than the preset temperature value, it means that the heat dissipation device 101 at this time is not sufficient to cool the drive module of the compressor 102. The controller controls the opening of the first control valve 109 to increase, so as to increase the flow rate of the refrigerant entering the refrigeration branch, strengthen the cooling of the drive module, and ensure that the drive module is within a normal and safe operating temperature range.

[0050] When the first temperature value S1 detected by the first temperature sensor is greater than the preset temperature value, but the detected first temperature value S1, second temperature value S2, and third temperature value S3 satisfy: S2≤S3 + 3°C, the controller controls the opening of the first control valve 109 to remain unchanged, or controls the current opening to be the maximum opening. This is to avoid controlling the opening of the first control valve 109 to increase due to the single detection that the first temperature value S1 of the drive module of the compressor 102 is greater than the preset temperature value, resulting in the opening of the first control valve 109 being too large, and the second temperature value S2 of the heat dissipation device 101 being lower than the environment dew point temperature plus 3°, which may cause the drive module of the compressor 102 to condense.

[0051] When the first temperature value S1, second temperature value S2, and third temperature value S3 satisfy: S2≥S3 + 3°C, and the first temperature value S1 of the drive module is less than the preset temperature value, the controller is used to control the opening of the first control valve 109 to be in a decreasing state. That is, when the second temperature value S2 of the heat dissipation device 101 is greater than or equal to the dew point temperature of the environment of the air conditioning system 10 plus 3°C, the drive module of the compressor 102 will not condense, and the first temperature value S1 of the drive module is less than the preset temperature value, it means that there is no need for too much refrigerant in the refrigeration circuit. At this time, the controller controls the opening of the first control valve 109 to decrease, so that the drive module will not be over-cooled.

[0052] Continue to refer to Figure 1As shown, the air conditioning system 10 includes a valve branch. The input end of the valve branch is connected to the refrigerant outlet of the evaporator 107, and the output end of the valve branch is connected between the compressor 102 and the heat exchanger 100. A first one-way valve 106 is provided on the valve branch. The air conditioning system 10 further includes a fluorine pump 203 provided between the condenser 200 and the evaporator 107, and a second one-way valve 202 arranged in parallel with the fluorine pump 203. It can be understood that the present application can implement the refrigeration mode of the compressor 102 and the refrigeration mode of the fluorine pump 203. When in the refrigeration mode of the compressor 102, the second one-way valve 202 is closed and the compressor 102 operates. When in the refrigeration mode of the fluorine pump 203, the second one-way valve 202 is opened and the compressor 102 stops operating.

[0053] When operating in the refrigeration mode of the fluorine pump 203, the compressor 102 stops, the second one-way valve 202 of the valve branch is opened, and the refrigerant flowing out of the evaporator 107 passes through the valve branch. The drive module of the compressor 102 does not generate heat, and the first control valve 109 is closed. At this time, the refrigerant returning from the condenser 200 to the indoor unit part 1 of the air conditioner will no longer enter the refrigeration branch, which can prevent condensation on the drive module of the compressor 102.

[0054] Continue to refer to Figure 1 As shown, the air conditioning system 10 includes an oil separator 103 and an oil return capillary 104. The oil separator 103 is arranged at the refrigerant outlet of the compressor 102. One end of the oil return capillary 104 is connected to the oil outlet port of the oil separator 103, and the other end is connected to the refrigerant inlet of the compressor 102 to separate the lubricating oil in the high-pressure steam discharged by the compressor 102, and then guide the separated lubricating oil back into the compressor 102 through the oil return capillary 104 to improve the operating efficiency of the air conditioning system 10 and extend the service life of the air conditioning system 10.

[0055] The air conditioning system 10 further includes a gas-liquid separator 105. The gas-liquid separator 105 is arranged between the evaporator 107 and the compressor 102, and the input end of the gas-liquid separator 105 is respectively connected to the refrigeration branch and the evaporator 107. It can be understood that the refrigerant outlets of the refrigeration branch and the evaporator 107 are both connected to the refrigerant inlet of the gas-liquid separator 105, that is, the refrigerants flowing out of the refrigeration branch and the evaporator 107 are aggregated and pass through the gas-liquid separator 105. The gas-liquid separator 105 separates the liquid droplets in the refrigerant gas, prevents liquid hammer and can achieve the effect of improving the efficiency of the air conditioning system 10. The refrigerant enters the compressor 102 after passing through the gas-liquid separator 105.

[0056] The air conditioning system 10 further includes a liquid receiver 201. It can be understood that the condenser 200, the liquid receiver 201, the second one-way valve 202 and the fluorine pump 203 of the air conditioning system 10 of the present application constitute the outdoor unit part 2 of the air conditioner, and the remaining structures constitute the indoor unit part 1 of the air conditioner. The liquid receiver 201 is arranged between the condenser 200 and the fluorine pump 203 to store the refrigerant in the air conditioning system 10, ensure sufficient refrigerant supply during the startup and operation of the air conditioning system 10, help regulate the refrigerant flow rate entering the evaporator 107, thereby maintaining the stable operation of the system, and can also prevent the liquid refrigerant from directly flowing back to the compressor 102, avoid the occurrence of liquid hammer phenomenon in the compressor 102, and extend the service life of the compressor 102.

[0057] The air conditioning system 10 further includes a second control valve 108 arranged at the refrigerant inlet of the evaporator 107. The controller is electrically connected to the second control valve 108 to control the opening degree of the second control valve 108. The refrigerant after passing through the condenser 200 is quickly cooled into a low-temperature and low-pressure liquid after passing through the second control valve 108, and then blows out cold air through heat exchange in the evaporator 107 to achieve the reduction of the room temperature.

[0058] The air conditioning system 10 of the present application is provided with a refrigeration branch to lead out part of the refrigerant to dissipate heat from the drive module of the compressor 102 through the heat dissipation device 101, without using all the refrigerant in the system to dissipate heat from the drive module of the compressor 102, and controls the refrigerant flow rate entering the refrigeration branch through the first control valve 109 to be able to accurately dissipate heat from the drive module of the compressor 102 and reduce the risk of condensation of the drive module of the compressor 102.

[0059] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0060] The above-described embodiments only express several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An air conditioning system, characterized in that: The air conditioning system comprises: A condenser, an evaporator and a compressor, wherein the condenser, the evaporator and the compressor are connected in sequence to form a circulation loop; the compressor includes a driving module; and A compressor refrigeration assembly includes a refrigeration branch connected in parallel with the evaporator on the circulation circuit, and a first control valve and a heat dissipation device arranged on the refrigeration branch. The heat dissipation device is arranged on one side of the drive module of the compressor and has a first refrigerant channel connected to the part of the circulation circuit where the evaporator is set.

2. The air conditioning system according to claim 1, characterized in that: The compressor refrigeration assembly further includes a heat exchanger disposed on the refrigeration branch, the heat exchanger having a second refrigerant channel connected to the first refrigerant channel, and a heat exchange channel capable of exchanging heat with the second refrigerant channel; The heat exchange channel is communicated between the refrigerant outlet of the compressor and the refrigerant inlet of the condenser.

3. The air conditioning system according to claim 2, characterized in that: The compressor refrigeration assembly further includes a first temperature sensor, a second temperature sensor and a controller, wherein the controller is electrically connected to the first temperature sensor and the second temperature sensor respectively; The first temperature sensor is disposed on the driving module of the compressor to detect a first temperature value of the driving module of the compressor; The second temperature sensor is disposed at the input end of the heat dissipation device to detect a second temperature value of the refrigerant flowing into the heat dissipation device; The controller is electrically connected to the first control valve, and is configured to adjust the opening of the first control valve according to the first temperature value sensed by the first temperature sensor and the second temperature value sensed by the second temperature sensor.

4. The air conditioning system according to claim 3, characterized in that: The compressor refrigeration assembly further includes a third temperature sensor, which is used to detect the dew point temperature of the environment in which the air-conditioning system is located to obtain a third temperature value; When the first temperature value S1 detected by the first temperature sensor is greater than a preset temperature value, and the first temperature value S1, the second temperature value S2 and the third temperature value S3 detected satisfy: S2≥S3+3°C, the controller is used to control the opening of the first control valve to be in an increasing state.

5. The air conditioning system according to claim 4, characterized in that: When the first temperature value S1 detected by the first temperature sensor is greater than the preset temperature value, and the first temperature value S1, the second temperature value S2 and the third temperature value S3 detected satisfy: S2≤S3+3°C, the controller is used to control the opening of the first control valve to remain unchanged.

6. The air conditioning system according to claim 4, characterized in that: When the first temperature value S1, the second temperature value S2 and the third temperature value S3 satisfy: S2≥S3+3°C, and the first temperature value S1 is less than a preset temperature value, the controller is used to control the opening of the first control valve to be in a decreasing state.

7. The air conditioning system according to claim 2, characterized in that: The air conditioning system comprises a valve branch, the input end of the valve branch is connected to the refrigerant outlet of the evaporator, and the output end of the valve branch is connected between the compressor and the heat exchange element; The valve branch is provided with a first one-way valve.

8. The air conditioning system according to claim 1, characterized in that: The air conditioning system includes an oil separator and an oil return capillary tube. The oil separator is arranged at the refrigerant outlet of the compressor. One end of the oil return capillary tube is connected to the oil outlet port of the oil separator, and the other end is connected to the refrigerant inlet of the compressor.

9. The air conditioning system according to claim 1, characterized in that: The air conditioning system comprises a gas-liquid separator, which is arranged between the evaporator and the compressor, and the input end of the gas-liquid separator is respectively connected to the refrigeration branch and the evaporator.

10. The air conditioning system according to claim 1, characterized in that: The air conditioning system comprises a fluorine pump arranged between the condenser and the evaporator, and a second one-way valve arranged in parallel with the fluorine pump.

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