air conditioning system

Abstract

This invention provides an air conditioning system including a compressor, an indoor heat exchanger, and an outdoor heat exchanger. The compressor has an intake port and an exhaust port. The system also includes a gas-liquid separation device, which comprises a medium inlet, a first outlet, and a second outlet. The refrigerant outlet of the outdoor heat exchanger is connected to the medium inlet. The gas-liquid separation device separates the refrigerant into gaseous refrigerant and liquid refrigerant. The refrigerant inlet of the heat dissipation component is connected to the first outlet, and the refrigerant outlet of the heat dissipation component is connected to the intake port. The gaseous refrigerant in the gas-liquid separation device flows into the heat dissipation component through the first outlet to cool it. The second outlet is connected to the indoor heat exchanger, and the liquid refrigerant in the gas-liquid separation device flows into the indoor heat exchanger through the second outlet. This invention solves the problem in existing air conditioning systems where condensation easily forms on the radiator surface due to the different refrigerant flow directions in cooling and heating modes when using refrigerant to cool the radiator.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically, to an air conditioning system. Background Technology

[0002] In residential air conditioning systems, the temperature rise of the compressor's control module often restricts the air conditioner's high-frequency operation capability. To address this issue, existing technologies often employ refrigerant cooling, where a radiator is placed around the control module, containing refrigerant pipes to cool the controller components using the refrigerant's cooling capacity. For example... Figure 2 As shown, the radiator is typically positioned between the condenser and the throttling device in a refrigerant system. This is because the refrigerant temperature at the condenser outlet, before throttling, is generally 1-5°C higher than the ambient temperature, making it suitable for cooling the controller. Using the refrigerant after throttling would result in an excessively low temperature, potentially leading to over-cooling and condensation on the controller surface, posing an electrical safety hazard. Utilizing refrigerant cooling technology allows the component temperature to be maintained within a suitable range in most situations.

[0003] However, the above-mentioned refrigerant heat dissipation has the following two problems:

[0004] 1. The refrigerant flows in opposite directions in the cooling and heating states, while the throttling device and the radiator are connected in series. This means that in the cooling state, the refrigerant passes through the radiator first and then throttles, while in the heating state, it throttles first and then dissipates heat, thus causing the condensation problem mentioned above.

[0005] Second, under high-temperature cooling conditions, the refrigerant temperature before throttling is relatively high, resulting in poor heat dissipation. Summary of the Invention

[0006] The main objective of this invention is to provide an air conditioning system that solves the problem in existing air conditioning systems where condensation easily forms on the radiator surface due to the different refrigerant flow directions in cooling and heating modes when using refrigerant to cool the radiator.

[0007] To achieve the above objectives, according to one aspect of the present invention, an air conditioning system is provided, comprising a compressor, an indoor heat exchanger, and an outdoor heat exchanger. The compressor has an intake port and an exhaust port. The air conditioning system further comprises: a gas-liquid separation device, which includes a medium inlet, a first outlet, and a second outlet; the refrigerant outlet of the outdoor heat exchanger is connected to the medium inlet, and the gas-liquid separation device separates the refrigerant into gaseous refrigerant and liquid refrigerant; a heat dissipation assembly for dissipating heat from electrical components within the air conditioner, wherein the refrigerant inlet of the heat dissipation assembly is connected to the first outlet, and the refrigerant outlet of the heat dissipation assembly is connected to the intake port; the gaseous refrigerant in the gas-liquid separation device flows into the heat dissipation assembly through the first outlet to cool the heat dissipation assembly; and the second outlet is connected to the indoor heat exchanger, through which the liquid refrigerant in the gas-liquid separation device flows into the indoor heat exchanger.

[0008] Furthermore, the air conditioning system also includes: a first pipe, the two ends of which are connected to a second outlet and a heat dissipation component, respectively; and a first control valve, which is installed on and connected to the first pipe, and controls the opening and closing of the first pipe.

[0009] Furthermore, the air conditioning system also includes: a temperature detection component, which is installed on the surface of the electrical components to detect the surface temperature of the electrical components. The temperature detection component is connected to the first control valve via a signal, and the opening degree of the first control valve is controlled by the detection result of the temperature detection component.

[0010] Furthermore, the air conditioning system also includes: a power component, which is installed on and connected to the first pipeline, and the liquid refrigerant in the gas-liquid separation device flows into the heat dissipation component after passing through the power component.

[0011] Furthermore, the air conditioning system also includes: a second pipe, the two ends of which are connected to the air intake and the first exhaust outlet respectively, and a heat dissipation component is disposed on the second pipe and connected to the second pipe; and a second control valve, which is disposed on the second pipe and connected to the second pipe, and is located between the heat dissipation component and the air intake.

[0012] Furthermore, the air conditioning system also includes: a pressure detection component, installed in the second pipeline, which detects the pressure in the second pipeline; the pressure detection component is connected to the second control valve via a signal, and the opening degree of the second control valve is controlled based on the detection result of the pressure detection component.

[0013] Furthermore, the air conditioning system also includes: a third pipeline, the two ends of which are connected to the exhaust port and the medium inlet respectively, and the outdoor heat exchanger is installed on the third pipeline and connected to the third pipeline; and a third control valve, which is installed on the third pipeline and connected to the third pipeline, and the third control valve is located between the outdoor heat exchanger and the gas-liquid separator.

[0014] Furthermore, the air conditioning system also includes: a first pipe, the two ends of which are connected to a second outlet and a heat dissipation component, respectively, and a first control valve is installed on the first pipe; a second pipe, the two ends of which are connected to an air intake and a first outlet, respectively, and a heat dissipation component is installed on the second pipe, and a second control valve is installed on the second pipe; when the air conditioner is in cooling mode, when the surface temperature of the electrical components is at a first temperature threshold, the second control valve is opened and the first control valve is closed; when the surface temperature of the electrical components rises to a second temperature threshold, the first control valve is opened, and part of the liquid refrigerant in the gas-liquid separation device flows into the first pipe through the second outlet.

[0015] Furthermore, the gas-liquid separation device includes: a shell, in which a gas-liquid separation chamber is provided, a first outlet is located at the top of the shell, a second outlet is located at the bottom of the shell, and a medium inlet is located on the shell; a third pipeline, one end of which is connected to the exhaust port, and the other end of which extends into the bottom of the gas-liquid separation chamber through the medium inlet, and an outdoor heat exchanger is located on the third pipeline.

[0016] Furthermore, the air conditioning system also includes: a four-way valve, which is connected to the air intake, the air exhaust, the indoor heat exchanger and the outdoor heat exchanger respectively; a fourth pipe, the two ends of which are connected to the indoor heat exchanger and the air intake respectively, at least a portion of the four-way valve is provided on the fourth pipe, and the refrigerant outlet of the heat dissipation component is connected to the fourth pipe.

[0017] According to the technical solution of this invention, the air conditioning system includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, a gas-liquid separator, and a heat dissipation assembly. The compressor has an intake port and an exhaust port. The gas-liquid separator includes a medium inlet, a first outlet, and a second outlet. The refrigerant outlet of the outdoor heat exchanger is connected to the medium inlet. The gas-liquid separator separates the refrigerant into gaseous refrigerant and liquid refrigerant. The heat dissipation assembly is used to dissipate heat from the electrical components inside the air conditioner. The refrigerant inlet of the heat dissipation assembly is connected to the first outlet, and the refrigerant outlet of the heat dissipation assembly is connected to the intake port. The gaseous refrigerant in the gas-liquid separator flows into the heat dissipation assembly through the first outlet to cool the heat dissipation assembly. The second outlet is connected to the indoor heat exchanger, and the liquid refrigerant in the gas-liquid separator flows into the indoor heat exchanger through the second outlet. By directly using the gaseous refrigerant after gas-liquid separation for heat dissipation of electrical components, the condensation problem that may be caused by overcooling is avoided, significantly improving the safety and stability of the system. Gaseous refrigerant does not undergo a phase change during heat dissipation within the heat dissipation components, effectively controlling the temperature around electrical components, preventing condensation formation, and reducing the risk of electrical short circuits and corrosion. Liquid refrigerant is guided to the indoor heat exchanger for heat exchange. Compared to the throttling process in traditional systems where refrigerant flows back to the compressor after heat dissipation, the utilization of liquid refrigerant in this system is more direct and efficient, reducing energy loss and optimizing the overall efficiency of the cooling / heating cycle. Simultaneously, the use of gaseous refrigerant avoids additional waste of cooling capacity, making the system's energy utilization more efficient. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0019] Figure 1 A schematic diagram of an embodiment of an air conditioning system according to the present invention is shown; and

[0020] Figure 2 A schematic diagram of the structure of an air conditioning system in the prior art is shown.

[0021] The above figures include the following reference numerals:

[0022] 100, Compressor; 110, Inlet; 120, Outlet; 200, Indoor heat exchanger; 300, Outdoor heat exchanger; 400, Gas-liquid separator; 410, Medium inlet; 420, First outlet; 430, Second outlet; 500, Heat dissipation assembly; 610, First pipeline; 620, First control valve; 630, Power component; 710, Second pipeline; 720, Second control valve; 810, Third pipeline; 820, Third control valve; 440, Housing; 450, Gas-liquid separation chamber; 910, Four-way valve; 920, Fourth pipeline. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Please refer to Figure 1 This application provides an air conditioning system, including a compressor 100, an indoor heat exchanger 200, and an outdoor heat exchanger 300. The compressor 100 has an intake port 110 and an exhaust port 120. The air conditioning system further includes a gas-liquid separator 400, which includes a medium inlet 410, a first outlet 420, and a second outlet 430. The refrigerant outlet of the outdoor heat exchanger 300 is connected to the medium inlet 410. The gas-liquid separator 400 separates the refrigerant into gaseous refrigerant and liquid refrigerant. A heat dissipation assembly 5... 00, used to dissipate heat from electrical components inside the air conditioner. The refrigerant inlet of the heat dissipation component 500 is connected to the first outlet 420, and the refrigerant outlet of the heat dissipation component 500 is connected to the suction port 110. The gaseous refrigerant in the gas-liquid separation device 400 flows into the heat dissipation component 500 through the first outlet 420 to cool the heat dissipation component 500. The second outlet 430 is connected to the indoor heat exchanger 200, and the liquid refrigerant in the gas-liquid separation device 400 flows into the indoor heat exchanger 200 through the second outlet 430.

[0025] The air conditioning system provided in this application includes a compressor 100, an indoor heat exchanger 200, an outdoor heat exchanger 300, a gas-liquid separator 400, and a heat dissipation assembly 500. The compressor 100 has an intake port 110 and an exhaust port 120. The gas-liquid separator 400 includes a medium inlet 410, a first outlet 420, and a second outlet 430. The refrigerant outlet of the outdoor heat exchanger 300 is connected to the medium inlet 410. The gas-liquid separator 400 separates the refrigerant into gaseous refrigerant and liquid refrigerant. The heat dissipation assembly 500... The heat dissipation assembly 500 is used to dissipate heat from the electrical components inside the air conditioner. The refrigerant inlet of the heat dissipation assembly 500 is connected to the first outlet 420, and the refrigerant outlet of the heat dissipation assembly 500 is connected to the suction port 110. Gaseous refrigerant in the gas-liquid separator 400 flows into the heat dissipation assembly 500 through the first outlet 420 to cool it. The second outlet 430 is connected to the indoor heat exchanger 200, and liquid refrigerant in the gas-liquid separator 400 flows into the indoor heat exchanger 200 through the second outlet 430. By directly using the gaseous refrigerant after gas-liquid separation to dissipate heat from the electrical components, condensation problems that may occur due to overcooling are avoided, significantly improving the safety and stability of the system. The gaseous refrigerant does not undergo a phase change during heat dissipation within the heat dissipation assembly, effectively controlling the temperature around the electrical components, preventing condensation formation, and reducing the risk of electrical short circuits and corrosion. Liquid refrigerant is directed to the indoor heat exchanger for heat exchange. Compared to the throttling process in traditional systems where the refrigerant returns to the compressor after heat dissipation, the utilization of liquid refrigerant in this system is more direct and efficient, reducing energy loss and optimizing the overall efficiency of the cooling / heating cycle. Simultaneously, the use of gaseous refrigerant avoids additional waste of cooling capacity, making the system's energy utilization more efficient.

[0026] Compared to using a dual-valve throttling method, this system simplifies the control logic, reduces the number of components, and lowers system complexity and cost through the coordination of gas-liquid separation and control valves. This not only makes the system design simpler but also reduces maintenance and failure rates, extending the system's lifespan. The introduction of the gas-liquid separation device ensures that the heat dissipation components and indoor heat exchangers each obtain the refrigerant phase most suitable for their operating conditions, improving the operational reliability of all parts of the system. Furthermore, by introducing more precise control points in the refrigerant circulation, the system can better respond to load changes and maintain a stable operating state.

[0027] Specifically, the air conditioning system also includes: a first pipe 610, the two ends of which are connected to a second outlet 430 and a heat dissipation assembly 500, respectively; and a first control valve 620, which is installed on and connected to the first pipe 610, and controls the opening and closing of the first pipe 610. Through the first control valve 620, the system can dynamically adjust the flow rate of gaseous refrigerant in the heat dissipation assembly 500 according to the real-time temperature requirements of the electrical components. When the heat dissipation demand of the electrical components increases, the first control valve 620 opens, allowing more liquid refrigerant to be converted into gaseous refrigerant through the first pipe 610 and flow to the heat dissipation assembly 500 for heat dissipation; conversely, it closes or reduces its opening to reduce the consumption of gaseous refrigerant and ensure the overall efficiency of the system.

[0028] Using gaseous refrigerant for heat dissipation avoids the condensation problems that may occur when directly cooling electrical components with supercooled liquid refrigerant. This prevents electrical faults caused by condensation on the surface of electrical components and improves the reliability and safety of system operation. The configuration of the first pipeline 610 and the first control valve 620 allows the system to flexibly control the flow direction and flow rate of the gas-liquid two-phase refrigerant in both cooling and heating modes, meeting the heat dissipation requirements under different operating conditions and optimizing the overall cooling / heating efficiency of the system.

[0029] Compared with traditional dual-valve systems, this application simplifies the system structure and reduces unnecessary valves through the intelligent adjustment of the first control valve 620, thereby reducing system costs. At the same time, it avoids the complexity of control logic in dual-valve systems and improves the stability and maintainability of system operation.

[0030] In its implementation, the air conditioning system also includes a temperature detection component, installed on the surface of electrical components to detect their surface temperature. This component is connected to a first control valve 620, and its opening is controlled based on the detection results. The temperature detection component monitors the surface temperature of the electrical components in real time, and the controller dynamically adjusts the opening of the first control valve 620 based on the detected temperature data, thereby precisely controlling the flow rate of gaseous refrigerant into the heat dissipation assembly. When the temperature of the electrical components rises, the controller increases the flow rate of gaseous refrigerant to enhance heat dissipation; when the temperature drops to a safe range, the controller reduces the flow rate of gaseous refrigerant to avoid excessive cooling. Maintaining electrical components within a suitable operating temperature range significantly improves their operational stability and lifespan, reducing failure rates and maintenance costs caused by excessively high temperatures. Simultaneously, avoiding excessive cooling prevents performance degradation or condensation on the surface of electrical components due to excessively low temperatures, which could affect their electrical performance and lifespan.

[0031] Furthermore, the air conditioning system also includes a power component 630, which is mounted on and connected to the first pipe 610. Liquid refrigerant in the gas-liquid separator 400 flows into the heat dissipation assembly 500 after passing through the power component. The power component 630 (e.g., a pump or booster) is integrated into the first pipe 610 to force the liquid refrigerant in the gas-liquid separator 400 to the heat dissipation assembly 500. This design is particularly effective under conditions with high heat loads or requiring rapid response, ensuring sufficient liquid refrigerant flow to enhance the heat dissipation capacity of the heat dissipation assembly 500 and quickly reduce the temperature of electrical components.

[0032] During high-frequency operation or when the ambient temperature changes drastically, the power component 630 can respond quickly, adjusting the delivery speed of the liquid refrigerant to ensure that the heat dissipation assembly 500 can immediately meet the heat dissipation needs of the electrical components, preventing overheating. The introduction of the power component 630 makes the delivery of the liquid refrigerant more stable, reducing system performance fluctuations caused by unstable refrigerant flow and improving the operational stability of the air conditioning system. In cooling mode, controlling the flow of the liquid refrigerant through the power component 630 can prevent condensation caused by excessively low refrigerant temperature in the heat dissipation assembly 500, reducing the risk of condensation on the surface of electrical components and improving electrical safety.

[0033] In this application, as Figure 1As shown, the air conditioning system also includes: a second pipe 710, with its two ends connected to the suction port 110 and the first discharge port 420, respectively; a heat dissipation assembly 500 is mounted on and connected to the second pipe 710; and a second control valve 720, mounted on and connected to the second pipe 710, located between the heat dissipation assembly 500 and the suction port 110. The second pipe 710 directly connects the heat dissipation assembly 500 to the compressor's suction port 110, allowing the cooled gaseous refrigerant to return directly to the compressor without having to pass through the indoor heat exchanger again. This provides the system with a rapid heat dissipation path for high-heat-load electrical components, especially under high-frequency operation or high-temperature environments, allowing direct introduction of gaseous refrigerant into the compressor and improving heat dissipation efficiency. The second control valve 720, mounted on the second pipe 710 between the heat dissipation assembly 500 and the compressor's suction port 110, can dynamically adjust the return speed and flow rate of the gaseous refrigerant according to the heat dissipation requirements of the electrical components. Under light load or normal operating conditions, the opening of the second control valve 720 can be adjusted to control more gaseous refrigerant to flow to the indoor heat exchanger for cooling or pre-cooling, thereby optimizing the efficiency of the refrigeration cycle. By directly returning the dissipated gaseous refrigerant to the compressor, ineffective circulation of the refrigerant in the indoor heat exchanger is reduced, avoiding unnecessary energy loss. Furthermore, the dynamic adjustment function of the second control valve 720 ensures that the refrigerant flow matches the system demand, preventing excessive refrigerant circulation and increased compressor load, further improving system energy efficiency. When the temperature of electrical components rises rapidly, the second pipe 710 can quickly guide the gaseous refrigerant to dissipate heat, while the second control valve 720 can quickly adjust its opening to return the dissipated refrigerant to the compressor, thereby rapidly reducing the temperature of the electrical components and improving the system's response time to changes in heat load.

[0034] The air conditioning system also includes a pressure detection component, installed within the second pipe 710, which detects the pressure within the second pipe 710. The pressure detection component is signal-connected to the second control valve 720, and its opening is controlled based on the detection results. The pressure detection component can monitor the refrigerant pressure within the second pipe 710 in real time, ensuring that the pressure of the gaseous refrigerant within the heat dissipation assembly 500 remains within a safe and efficient range. When the system detects abnormal pressure, such as excessively high or low pressure, it can quickly adjust the opening of the second control valve 720 to prevent uneven heat dissipation, refrigerant leakage, or system malfunctions caused by system pressure imbalance, thus enhancing system stability and reliability. By precisely controlling the gaseous refrigerant pressure within the second pipe 710, the flow rate and heat dissipation area of ​​the gaseous refrigerant within the heat dissipation assembly 500 can be adjusted, thereby optimizing the heat dissipation efficiency of the heat dissipation assembly. When the heat dissipation load is high, appropriately increasing the refrigerant pressure can accelerate the flow of gaseous refrigerant and improve the heat dissipation effect; when the heat dissipation demand is low, the refrigerant pressure can be reduced to avoid excessive heat dissipation and energy waste.

[0035] The combined use of pressure sensing components and control valves helps the system maintain optimal refrigerant pressure under different operating conditions, avoiding reduced system efficiency due to pressure fluctuations. During cooling or heating processes, precise control of refrigerant pressure can improve the overall energy efficiency ratio of the air conditioning system, reduce energy consumption, and meet energy conservation and environmental protection requirements.

[0036] Furthermore, the air conditioning system also includes: a third pipe 810, with its two ends connected to the exhaust port 120 and the medium inlet 410 respectively; an outdoor heat exchanger 300 is installed on and connected to the third pipe 810; and a third control valve 820, installed on and connected to the third pipe 810, located between the outdoor heat exchanger 300 and the gas-liquid separator 400. The third control valve 820 allows the system to more precisely control the refrigerant flow from the outdoor heat exchanger 300 to the gas-liquid separator 400. This is particularly important in different operating modes, as the refrigerant flow directly affects the heat dissipation effect and heat exchange efficiency. By dynamically adjusting the opening of the third control valve 820, the system can optimize refrigerant distribution according to actual needs, improving energy efficiency.

[0037] The third control valve 820 helps the system maintain stability when refrigerant pressure fluctuates. Refrigerant pressure and flow can fluctuate during system startup or changes in external conditions. The intelligent control of the third control valve 820 ensures that the pressure and flow of refrigerant received by the gas-liquid separator 400 are at an ideal level, preventing system performance instability caused by pressure fluctuations.

[0038] The third control valve 820, as a key control point in the system, can adjust the degree of refrigerant throttling according to the air conditioner's operating mode (cooling or heating) and the current load status, ensuring that the system can operate effectively under different operating conditions and improving the system's adaptability and flexibility.

[0039] Furthermore, the air conditioning system also includes: a first pipe 610, with its two ends connected to a second outlet 430 and a heat dissipation component 500, respectively, and a first control valve 620 installed on the first pipe 610; and a second pipe 710, with its two ends connected to an air intake 110 and a first outlet 420, respectively, and the heat dissipation component 500 installed on the second pipe 710, with a second control valve 720 installed on the second pipe 710. When the air conditioner is in cooling mode, if the surface temperature of the electrical components is at a first temperature threshold, the second control valve 720 is opened and the first control valve 620 is closed. If the surface temperature of the electrical components rises to a second temperature threshold, the first control valve 620 is opened, and some of the liquid refrigerant in the gas-liquid separation device 400 flows into the first pipe 610 through the second outlet 430. The system can intelligently switch the gas-liquid ratio of the refrigerant according to the real-time changes in the surface temperature of the electrical components, thereby achieving precise temperature control. When the temperature of electrical components is low, the first control valve 620 is closed and the second control valve 720 is opened, using only gaseous refrigerant for heat dissipation to avoid overcooling and condensation. When the temperature of electrical components rises and stronger heat dissipation is needed, the system automatically opens the first control valve 620 to introduce liquid refrigerant, increasing heat dissipation efficiency and quickly reducing the temperature of electrical components. Under normal heat dissipation requirements, using only gaseous refrigerant reduces the load on the compressor 100 because less energy is required to transport gaseous refrigerant. When heat dissipation demand increases, liquid refrigerant is introduced through the first control valve 620. Although this requires a power component 630 (if present) for transport, it ensures that electrical components do not overheat while avoiding excessive use of liquid refrigerant, thereby improving the overall energy efficiency of the system.

[0040] This dynamic control mechanism enables the system to better cope with various operating conditions, including high-frequency operation and sudden changes in ambient temperature. It can respond quickly according to actual heat dissipation needs, ensuring that electrical components remain within their optimal operating temperature range in all operating modes.

[0041] In the embodiments provided in this application, the gas-liquid separation device 400 includes: a housing 440, a gas-liquid separation chamber 450 disposed within the housing 440, a first outlet 420 disposed at the top of the housing 440, a second outlet 430 disposed at the bottom of the housing 440, and a medium inlet 410 disposed on the housing 440; a third pipeline 810, one end of which is connected to an exhaust port 120, and the other end which extends into the bottom of the gas-liquid separation chamber 450 through the medium inlet 410; and an outdoor heat exchanger 300 disposed on the third pipeline 810. The gas-liquid separation chamber 450 within the housing 440 is designed to ensure that the refrigerant can form a stable separation state within the chamber after entering through the medium inlet 410. The gaseous refrigerant, due to its lower density, naturally rises to the top of the housing 440 and is discharged through the first outlet 420; the liquid refrigerant, due to its higher density, sinks to the bottom of the housing 440 and is discharged through the second outlet 430. This natural separation mechanism ensures effective refrigerant separation without additional mechanical or electrical consumption, improving system energy efficiency. The design of the third pipe 810 ensures that the refrigerant, after passing through the outdoor heat exchanger 300, can directly enter the bottom of the gas-liquid separator 400, promoting the accumulation and separation of liquid refrigerant and improving separation efficiency. This design makes the refrigerant flow more smoothly in the system, reducing flow resistance and avoiding energy loss during separation. By placing the outdoor heat exchanger 300 on the third pipe 810, the system can adjust the refrigerant cooling level according to outdoor environmental conditions, thereby optimizing the operating state of the gas-liquid separator 400 and ensuring stable gas-liquid separation under various environmental conditions. This prevents liquid refrigerant from accumulating in the heat dissipation component 500, reducing the possibility of system failure. The separated gaseous refrigerant enters the heat dissipation component 500 directly through the first outlet 420, reducing the refrigerant's transmission distance and time in the system, improving the response speed and efficiency of the heat dissipation component, and ensuring that electrical components can be cooled promptly when needed.

[0042] The air conditioning system also includes: a four-way valve 910, connected to the suction port 110, the exhaust port 120, the indoor heat exchanger 200, and the outdoor heat exchanger 300 respectively; a fourth pipe 920, with both ends connected to the indoor heat exchanger 200 and the suction port 110 respectively, at least a portion of the four-way valve 910 being disposed on the fourth pipe 920, and the refrigerant outlet of the heat dissipation assembly 500 being connected to the fourth pipe 920. The function of the four-way valve 910 is to allow the system to quickly switch between cooling and heating modes, while the design of the fourth pipe 920 ensures that the refrigerant outlet of the heat dissipation assembly 500 can be directly connected to the suction port 110 of the compressor. In cooling mode, after passing through the heat dissipation component 500, the gaseous refrigerant can return directly to the compressor through the four-way valve 910 and the fourth pipeline 920, achieving a rapid heat exchange cycle. In heating mode, the reversal of the four-way valve 910 reverses the refrigerant flow between the indoor heat exchanger 200 and the outdoor heat exchanger 300, thereby optimizing heating efficiency.

[0043] In this application, the gas-liquid separation device 400 is preferably a flash evaporator. The first control valve 620 is an electric valve B, the second control valve 720 is an electric valve A, and the third control valve 820 is an electronic expansion valve.

[0044] In existing technology, a throttling valve is installed before and after the radiator. Depending on the refrigerant flow direction, the valve after the radiator is activated to throttle the refrigerant, while the throttling valve before the radiator remains fully open, ensuring that the refrigerant flowing through the radiator is the one before throttling. While this solves the problem simply and directly, using two throttling valves is costly. Furthermore, using a dual-valve system requires designing a separate opening control logic for each expansion valve based on cooling and heating modes, making the system control more complex. In certain modes requiring continuous switching (such as heating / defrosting mode), the control logic of the two valves can easily become confused, posing a safety hazard.

[0045] Conventional air conditioning refrigerant systems, such as Figure 2 As shown. A conventional system consists of a compressor, a four-way valve, an indoor heat exchanger, an outdoor heat exchanger, and an electronic expansion valve (throttling device). It also includes a radiator for refrigerant cooling, located between the two electronic expansion valves. In cooling mode, expansion valve B is adjusted to its maximum opening, with no throttling effect; expansion valve A performs the throttling. The four-way valve connects the compressor outlet to the outdoor heat exchanger, and the indoor heat exchanger to the compressor inlet. High-pressure refrigerant exits the compressor outlet and enters the outdoor heat exchanger via the four-way valve, condensing and releasing heat. After heat exchange, the unthrottled refrigerant enters the radiator, completes heat dissipation, and then enters the electronic expansion valve, where it is throttled into low-pressure refrigerant. It then enters the indoor heat exchanger for evaporation and heat absorption, finally returning to the compressor via the four-way valve. In heating mode, the refrigerant flow is reversed compared to cooling mode. In this mode, expansion valve A is adjusted to its maximum opening, with no throttling effect; expansion valve B performs the throttling. After the four-way valve reverses its direction, it connects the compressor outlet to the indoor heat exchanger, and the outdoor heat exchanger to the compressor inlet. The refrigerant from the compressor outlet enters the indoor unit heat exchanger through the four-way valve, where it condenses and releases heat. After condensation, the refrigerant enters the radiator, where it is then throttled before entering the outdoor unit heat exchanger to evaporate and absorb heat, and finally returns to the compressor.

[0046] The air conditioning system of this application, in addition to conventional components such as a compressor and an electronic expansion valve, also includes a flash radiator and two electric valves. The flash radiator has three connecting pipes: the uppermost connecting pipe is connected to the radiator inlet, and the radiator outlet is connected to the compressor suction port, with an electric valve A installed in between; the middle connecting pipe is connected to the electronic expansion valve; the bottom connecting pipe is connected to the indoor heat exchanger; in addition, there is a branch connecting the top and bottom connecting pipes, with another electric valve B installed on this branch.

[0047] In cooling mode, the high-pressure refrigerant releases heat through the outdoor heat exchanger, then enters the electronic expansion valve for throttling and depressurization before being released into the flash evaporator. Due to the flashing effect, the refrigerant, after throttling, produces a two-phase mixture of gas and liquid within the flash evaporator, with approximately 20% gaseous refrigerant and 80% liquid refrigerant. The two phases separate within the container under gravity. The gaseous refrigerant flows from the top to the radiator, cooling the controller components. Subsequently, electric valve A opens, allowing the cooled refrigerant to directly enter the compressor. Compared to liquid refrigerant, the gaseous refrigerant's heating process does not involve a phase change, and the refrigerant itself has a limited capacity to absorb heat. The 20% heat capacity of the gaseous refrigerant is sufficient to meet the heat load generated by the components in most cases, preventing condensation on the controller component surface due to excessive cooling. The liquid refrigerant leaves the flash evaporator from the bottom and evaporates to absorb heat on the indoor side. Because the amount of gaseous refrigerant in the evaporator decreases, the thermal resistance between the refrigerant and the heat exchanger surface is significantly reduced, increasing the heat transfer coefficient and improving heat exchange efficiency. If the compressor operates at high frequency for extended periods, or if the ambient temperature is high, the gaseous refrigerant may not be sufficient to meet the thermal load of the components. In such cases, some liquid refrigerant needs to be introduced for auxiliary cooling. When the system detects that the surface temperature of the components has risen to a certain threshold, electric valve B opens, drawing some liquid refrigerant into the radiator. Once the detected temperature returns to normal, electric valve B closes. In heating mode, when the ambient temperature is low and refrigerant cooling of the controller components is not required, electric valve A closes. The refrigerant from the indoor heat exchanger outlet flows directly to the electronic expansion valve for throttling and pressure reduction without passing through the radiator. In this process, the gas-liquid two-phase refrigerant generated after throttling is effectively utilized. Compared to conventional refrigeration systems, this provides more detailed thermal management, rationally distributing the refrigerant under various conditions and effectively improving system performance.

[0048] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0049] The air conditioning system provided in this application includes a compressor 100, an indoor heat exchanger 200, an outdoor heat exchanger 300, a gas-liquid separator 400, and a heat dissipation assembly 500. The compressor 100 has an intake port 110 and an exhaust port 120. The gas-liquid separator 400 includes a medium inlet 410, a first outlet 420, and a second outlet 430. The refrigerant outlet of the outdoor heat exchanger 300 is connected to the medium inlet 410. The gas-liquid separator 400 separates the refrigerant into gaseous refrigerant and liquid refrigerant. The heat dissipation assembly 500... The heat dissipation assembly 500 is used to dissipate heat from the electrical components inside the air conditioner. The refrigerant inlet of the heat dissipation assembly 500 is connected to the first outlet 420, and the refrigerant outlet of the heat dissipation assembly 500 is connected to the suction port 110. Gaseous refrigerant in the gas-liquid separator 400 flows into the heat dissipation assembly 500 through the first outlet 420 to cool it. The second outlet 430 is connected to the indoor heat exchanger 200, and liquid refrigerant in the gas-liquid separator 400 flows into the indoor heat exchanger 200 through the second outlet 430. By directly using the gaseous refrigerant after gas-liquid separation to dissipate heat from the electrical components, condensation problems that may occur due to overcooling are avoided, significantly improving the safety and stability of the system. The gaseous refrigerant does not undergo a phase change during heat dissipation within the heat dissipation assembly, effectively controlling the temperature around the electrical components, preventing condensation formation, and reducing the risk of electrical short circuits and corrosion. Liquid refrigerant is directed to the indoor heat exchanger for heat exchange. Compared to the throttling process in traditional systems where the refrigerant returns to the compressor after heat dissipation, the utilization of liquid refrigerant in this system is more direct and efficient, reducing energy loss and optimizing the overall efficiency of the cooling / heating cycle. Simultaneously, the use of gaseous refrigerant avoids additional waste of cooling capacity, making the system's energy utilization more efficient.

[0050] 1. Solved the condensation problem in the refrigerant heat dissipation system caused by the different flow directions of cooling and heating.

[0051] 2. It solves the problem of poor refrigerant heat dissipation under high heat load conditions.

[0052] 3. It makes effective use of the gas-liquid two-phase refrigerant generated after throttling. Compared with conventional refrigeration systems, it provides more detailed thermal management of the system and rationally distributes the refrigerant under various conditions, effectively improving system performance.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An air conditioning system comprising a compressor (100), an indoor heat exchanger (200), and an outdoor heat exchanger (300), said compressor (100) having an intake port (110) and an exhaust port (120), characterized in that, The air conditioning system also includes: A gas-liquid separation device (400) includes a medium inlet (410), a first outlet (420), and a second outlet (430). The refrigerant outlet of the outdoor heat exchanger (300) is connected to the medium inlet (410), and the gas-liquid separation device (400) separates the refrigerant into gaseous refrigerant and liquid refrigerant. A heat dissipation assembly (500) is used to dissipate heat from electrical components inside the air conditioner. The refrigerant inlet of the heat dissipation assembly (500) is connected to the first outlet (420), and the refrigerant outlet of the heat dissipation assembly (500) is connected to the air intake (110). The gaseous refrigerant in the gas-liquid separation device (400) flows into the heat dissipation assembly (500) through the first outlet (420) to cool the heat dissipation assembly (500). The second outlet (430) is connected to the indoor heat exchanger (200), and the liquid refrigerant in the gas-liquid separation device (400) flows into the indoor heat exchanger (200) through the second outlet (430); The air conditioning system further includes: a first pipe (610), the two ends of which are connected to the second outlet (430) and the heat dissipation component (500) respectively; and a first control valve (620), which is disposed on the first pipe (610) and connected to the first pipe (610), and controls the opening and closing of the first pipe (610) through the first control valve (620).

2. The air conditioning system according to claim 1, characterized in that, The air conditioning system also includes: A temperature detection component is disposed on the surface of the electrical component to detect the surface temperature of the electrical component. The temperature detection component is connected to the first control valve (620) by signal. The opening degree of the first control valve (620) is controlled by the detection result of the temperature detection component.

3. The air conditioning system according to claim 1, characterized in that, The air conditioning system also includes: A power unit (630) is installed on the first pipeline (610) and connected to the first pipeline (610). The liquid refrigerant in the gas-liquid separation device (400) flows into the heat dissipation assembly (500) after passing through the power unit.

4. The air conditioning system according to claim 1, characterized in that, The air conditioning system also includes: The second pipe (710) is connected at both ends to the air intake (110) and the first exhaust outlet (420) respectively. The heat dissipation component (500) is disposed on the second pipe (710) and connected to the second pipe (710). The second control valve (720) is disposed on the second pipeline (710) and connected to the second pipeline (710). The second control valve (720) is located between the heat dissipation assembly (500) and the air intake (110).

5. The air conditioning system according to claim 4, characterized in that, The air conditioning system also includes: A pressure detection component is installed inside the second pipeline (710) to detect the pressure inside the second pipeline (710); The pressure detection component is connected to the second control valve (720) by signal, and the opening degree of the second control valve (720) is controlled by the detection result of the pressure detection component.

6. The air conditioning system according to claim 1, characterized in that, The air conditioning system also includes: The third pipeline (810) is connected at both ends to the exhaust port (120) and the medium inlet (410) respectively. The outdoor heat exchanger (300) is installed on the third pipeline (810) and connected to the third pipeline (810). The third control valve (820) is installed on the third pipeline (810) and connected to the third pipeline (810). The third control valve (820) is located between the outdoor heat exchanger (300) and the gas-liquid separator (400).

7. The air conditioning system according to claim 1, characterized in that, The air conditioning system further includes: a second pipe (710), the two ends of the second pipe (710) being connected to the air intake (110) and the first exhaust outlet (420) respectively, the heat dissipation component (500) being disposed on the second pipe (710), and a second control valve (720) being disposed on the second pipe (710). When the air conditioner is in cooling mode, and the surface temperature of the electrical component is at a first temperature threshold, the second control valve (720) is opened and the first control valve (620) is closed. When the surface temperature of the electrical component rises to the second temperature threshold, the first control valve (620) is opened, and part of the liquid refrigerant in the gas-liquid separation device (400) flows into the first pipeline (610) through the second outlet (430).

8. The air conditioning system according to claim 1, characterized in that, The gas-liquid separation device (400) includes: The housing (440) has a gas-liquid separation chamber (450) inside it. The first outlet (420) is located at the top of the housing (440), the second outlet (430) is located at the bottom of the housing (440), and the medium inlet (410) is located on the housing (440). The third pipeline (810) has one end connected to the exhaust port (120) and the other end extended into the bottom of the gas-liquid separation chamber (450) through the medium inlet (410). The outdoor heat exchanger (300) is installed on the third pipeline (810).

9. The air conditioning system according to claim 1, characterized in that, The air conditioning system also includes: The four-way valve (910) is connected to the air intake (110), the air exhaust (120), the indoor heat exchanger (200), and the outdoor heat exchanger (300), respectively; The fourth pipe (920) is connected at both ends to the indoor heat exchanger (200) and the air intake (110) respectively. At least part of the four-way valve (910) is disposed on the fourth pipe (920). The refrigerant outlet of the heat dissipation assembly (500) is connected to the fourth pipe (920).

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