Air conditioning system

Abstract

The invention provides an air conditioning system. The air conditioning system comprises a compressor module, a first heat exchanger, a fluorine pump module, a throttling component and a second heat exchanger which are sequentially connected end to end; the compressor module comprises a gas-liquid separation device and a compressor, the gas-liquid separation device is provided with an inlet connecting pipe, a gas outlet connecting pipe and a liquid outlet connecting pipe, the inlet connecting pipe is communicated with the second heat exchanger, the gas outlet connecting pipe is communicated with an inlet of the compressor, and the liquid outlet connecting pipe and an outlet of the compressor are both communicated with the first heat exchanger. In a compressor operation mode, opening a switch valve; in the fluorine pump operation mode, the switch valve is closed, the refrigerant flowing out of the outlet of the second heat exchanger is prevented from flowing to the inlet of the compressor through the closed switch valve, liquid accumulation of the compressor is avoided, and therefore the compressor is not prone to damage in the operation process of the air conditioning system.

Description

Technical Field

[0001] The present application relates to but is not limited to the technical field of electrical equipment, and specifically refers to an air conditioning system. Background Art

[0002] An air conditioning system includes a compressor module, a first heat exchanger, a fluorine pump module, an electronic expansion valve and a second heat exchanger connected end to end. The compressor module includes a compressor and a first check valve connected in parallel, and the fluorine pump module includes a fluorine pump and a third check valve connected in parallel.

[0003] Compressor operation mode: The compressor is running, the fluorine pump is stopped, and the refrigerant circulation path is "compressor outlet - first heat exchanger - third one-way valve - electronic expansion valve - second heat exchanger - compressor inlet".

[0004] Fluorine pump operation mode: The compressor stops, the fluorine pump runs, and the refrigerant circulation path is "fluorine pump outlet-electronic expansion valve-second heat exchanger-first check valve-first heat exchanger-fluorine pump inlet". Since the outside temperature is low and lower than the indoor temperature, the refrigerant circulates in liquid form at low temperature to achieve heat exchange between indoor and outdoor.

[0005] The compressor of this air conditioning system is easily damaged during operation. Summary of the invention

[0006] During the startup phase or load change process of the fluorine pump operation mode, the refrigerant flowing out from the outlet of the second heat exchanger may be in a two-phase state, with one part flowing to the first one-way valve and the other part flowing to the inlet of the compressor. The refrigerant flowing to the compressor inlet will cause liquid accumulation in the compressor. When the compressor operation mode is subsequently operated, the compressor will be easily damaged when it starts to compress with liquid. This is the main reason why the compressor is easily damaged.

[0007] The present application provides an air conditioning system, in which the compressor is not easily damaged during operation.

[0008] The air-conditioning system proposed in an embodiment of the present invention comprises a compressor module, a first heat exchanger, a fluorine pump module, a throttling component and a second heat exchanger connected in sequence end to end; the compressor module comprises a gas-liquid separation device and a compressor, the gas-liquid separation device has an inlet connecting pipe, an air outlet connecting pipe and a liquid outlet connecting pipe, the inlet connecting pipe is connected to the second heat exchanger, the air outlet connecting pipe is connected to the inlet of the compressor, and the liquid outlet connecting pipe and the outlet of the compressor are both connected to the first heat exchanger.

[0009] The technical solution proposed in the embodiment of the present invention is a fluorine pump operation mode. When the refrigerant flowing out from the outlet of the second heat exchanger is a two-phase refrigerant, the two-phase refrigerant flows into the gas-liquid separation device from the inlet connecting pipe. The gas-liquid separation device separates the liquid refrigerant and the gaseous refrigerant in the two-phase refrigerant. The separated liquid refrigerant flows from the liquid outlet connecting pipe to the first heat exchanger, and the separated gaseous refrigerant flows from the air outlet connecting pipe to the inlet of the compressor. The refrigerant flowing into the air outlet connecting pipe and the inlet of the compressor accumulates in the air outlet connecting pipe and the inlet of the compressor. Under the action of gas pressure, the liquid refrigerant in the gas-liquid separation device is prevented from flowing into the air outlet connecting pipe or even the inlet of the compressor, which can effectively avoid liquid accumulation in the compressor. Therefore, during the operation of the air-conditioning system, the compressor is not easily damaged.

[0010] The air-conditioning system proposed in the embodiment of the present invention includes a compressor module, a first heat exchanger, a fluorine pump module, a throttling component and a second heat exchanger connected in sequence end to end; the compressor module includes a switch valve, a tee and a compressor, the first connection port of the tee is connected to the second heat exchanger, the second connection port of the tee is connected to the inlet of the compressor through the switch valve, and the third connection port of the tee and the outlet of the compressor are both connected to the first heat exchanger.

[0011] The technical solution proposed in the embodiment of the present invention is that in the compressor operation mode, the switch valve is opened; in the fluorine pump operation mode, the switch valve is closed. The closed switch valve prevents the refrigerant flowing out of the outlet of the second heat exchanger from flowing to the inlet of the compressor, thereby avoiding liquid accumulation in the compressor. Therefore, during the operation of the air-conditioning system, the compressor is not easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic block diagram of the structure of an air conditioning system provided in some embodiments;

[0013] Figure 2 for Figure 1 The structural schematic diagram of the gas-liquid separator part;

[0014] Figure 3 A schematic structural block diagram of an air conditioning system provided for other embodiments;

[0015] Figure 4 for Figure 3 The structural schematic diagram of the middle three-way part;

[0016] Figure 5 A schematic structural block diagram of an air-conditioning system provided in some further embodiments.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0018] 100 first heat exchanger, 200 throttling component, 300 second heat exchanger, 410 compressor, 420 gas-liquid separator, 431 inlet connecting pipe, 432 gas outlet connecting pipe, 433 liquid outlet connecting pipe, 440 auxiliary connecting pipe, 450 three-way, 451 gas-liquid separation pipe, 460 first one-way valve, 470 second one-way valve, 500 filter, 610 fluorine pump, 620 third one-way valve, 700 three-way, 800 switch valve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0022] In the present invention, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; "connection" can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0024] The embodiment of the present invention provides an air conditioning system, such as Figures 1 to 4 As shown, it includes a compressor module, a first heat exchanger 100, a fluorine pump module, a throttling component 200 and a second heat exchanger 300 connected in sequence end to end; the compressor module includes a gas-liquid separation device and a compressor 410, the gas-liquid separation device has an inlet connecting pipe 431, an air outlet connecting pipe 432 and a liquid outlet connecting pipe 433, the inlet connecting pipe 431 is connected to the second heat exchanger 300, the air outlet connecting pipe 432 is connected to the inlet of the compressor 410, and the liquid outlet connecting pipe 433 and the outlet of the compressor 410 are both connected to the first heat exchanger 100.

[0025] In the fluorine pump operation mode, when the refrigerant flowing out from the outlet of the second heat exchanger 300 is a two-phase refrigerant, the two-phase refrigerant flows into the gas-liquid separation device from the inlet connecting pipe 431, and the gas-liquid separation device separates the liquid refrigerant and the gaseous refrigerant in the two-phase refrigerant. The separated liquid refrigerant flows from the liquid outlet connecting pipe 433 to the first heat exchanger 100, and the separated gaseous refrigerant flows from the air outlet connecting pipe 432 to the inlet of the compressor 410, and the refrigerant flowing into the air outlet connecting pipe 432 and the inlet of the compressor 410 accumulates in the air outlet connecting pipe 432 and the inlet of the compressor 410. Under the action of gas pressure, the liquid refrigerant in the gas-liquid separation device is prevented from flowing into the air outlet connecting pipe 432 or even the inlet of the compressor 410, which can effectively avoid liquid accumulation in the compressor 410. Therefore, during the operation of the air-conditioning system, the compressor 410 is not easily damaged.

[0026] In some exemplary embodiments, Figure 1 and Figure 2 As shown, the gas-liquid separation device is a gas-liquid separator 420, the inlet connecting pipe 431 and the gas outlet connecting pipe 432 are both connected to the top of the gas-liquid separator 420, and the liquid outlet connecting pipe 433 is connected to the bottom of the gas-liquid separator 420. Since the density of the gaseous refrigerant is less than that of the liquid refrigerant, the two-phase refrigerant flowing into the gas-liquid separator 420 through the inlet connecting pipe 431, the liquid refrigerant is located below the gaseous refrigerant, the liquid refrigerant will flow from the liquid outlet connecting pipe 433 to the first heat exchanger 100, and the gaseous refrigerant will flow from the gas outlet connecting pipe 432 to the inlet of the compressor 410.

[0027] In some examples, such as Figure 1 and Figure 2As shown, the compressor module further includes an auxiliary connecting pipe 440, through which the liquid outlet connecting pipe 433 is connected to the first heat exchanger 100, and the lowest position of the liquid outlet connecting pipe 433 is located above the highest position of the auxiliary connecting pipe 440. It can be that the minimum distance between the liquid outlet connecting pipe 433 and the reference plane is h4, and the maximum distance between the auxiliary connecting pipe 440 and the reference plane is h3, H2 = h4-h3> 0, so that the liquid refrigerant in the gas-liquid separator 420 is more likely to flow from the liquid outlet connecting pipe 433 to the auxiliary connecting pipe 440, and at the same time, it is also ensured that the liquid refrigerant after gas-liquid diversion is still stored in the gas-liquid separator 420 when it cannot flow out from the auxiliary connecting pipe 440 in time. It can be that the auxiliary connecting pipe 440 is arranged horizontally, and the reference plane can be defined as a horizontal plane passing through the axis of the auxiliary connecting pipe 440, then h3 = 0.

[0028] In some examples, the highest position of the inlet connecting pipe 431 is located below the highest position of the outlet connecting pipe 432. Figure 2 As shown, the maximum distance between the inlet connecting pipe 431 and the reference plane is h1, the maximum distance between the outlet connecting pipe 432 and the reference plane is h2, H1=h2-h1≥10cm, ensuring a large height difference between the outlet connecting pipe 432 and the auxiliary connecting pipe 440. Under the pressure difference caused by the height difference, the compressor 410 is less likely to accumulate liquid.

[0029] In some other exemplary embodiments, Figure 3 and Figure 4 As shown, the gas-liquid separation device is a tee 450, which includes a gas-liquid separation pipe 451, an inlet connecting pipe 431, an air outlet connecting pipe 432 and a liquid outlet connecting pipe 433. The gas-liquid separation pipe 451 is arranged horizontally, the air outlet connecting pipe 432 is connected to the upper part of the peripheral wall of the gas-liquid separation pipe 451, and the inlet connecting pipe 431 and the liquid outlet connecting pipe 433 are connected to both ends of the gas-liquid separation pipe 451 (the inlet connecting pipe 431 and the liquid outlet connecting pipe 433 can be flanged holes made at both ends of the gas-liquid separation pipe 451, which can reduce the manufacturing cost of the tee 450). The diameter of the gas-liquid separation pipe 451 is larger than the diameters of the air outlet connecting pipe 432, the inlet connecting pipe 431 and the liquid outlet connecting pipe 433, and the two-phase refrigerant realizes gas-liquid separation in the gas-liquid separation pipe 451.

[0030] In some examples, such as Figure 3 and Figure 4As shown, the compressor module further includes an auxiliary connecting pipe 440, which is located below the gas-liquid separation pipe 451 and connects the liquid outlet connecting pipe 433 and the first heat exchanger 100. The highest position of the inlet connecting pipe 431 is located above the highest position of the auxiliary connecting pipe 440, and the highest position of the inlet connecting pipe 431 is located below the highest position of the gas outlet connecting pipe 432. It can be that the maximum distance between the inlet connecting pipe 431 and the reference plane is h1, the maximum distance between the auxiliary connecting pipe 440 and the reference plane is h3, H3 = h1-h3 ≥ 10cm; the maximum distance between the gas outlet connecting pipe 432 and the reference plane is h2, H1 = h2-h1 ≥ 10cm, to ensure that there is a large height difference between the gas outlet connecting pipe 432 and the auxiliary connecting pipe 440 (height difference = h2-h3 ≥ 20cm), and the compressor 410 is less likely to accumulate liquid under the pressure difference caused by the height difference. It may be that the auxiliary connecting pipe 440 is arranged horizontally, and the reference plane may be defined as a horizontal plane passing through the axis of the auxiliary connecting pipe 440 , then h3=0.

[0031] In some exemplary embodiments, Figure 2 and Figure 4 As shown, the air outlet connecting pipe 432 includes a curved pipe section with the concave side of the curved pipe section facing downward. The gaseous refrigerant forms an air seal inside the curved pipe section, which can prevent the liquid refrigerant from flowing through the curved pipe section. In this solution, the compressor 410 is less likely to accumulate liquid.

[0032] In some exemplary embodiments, Figure 1 and Figure 3 As shown, the compressor module further includes: a first one-way valve 460, the first one-way valve 460 connects the auxiliary connecting pipe 440 and the first heat exchanger 100, and is configured to conduct from the auxiliary connecting pipe 440 to the first heat exchanger 100 through the first one-way valve 460; and a second one-way valve 470, the second one-way valve 470 connects the outlet of the compressor 410 and the first heat exchanger 100, and is configured to conduct from the outlet of the compressor 410 to the first heat exchanger 100 through the second one-way valve 470, for preventing the refrigerant from flowing from the outlet of the compressor 410 to the compressor 410 in the fluorine pump operation mode. Among them, the first one-way valve 460 and the second one-way valve 470 are connected to the first heat exchanger 100 through a three-way.

[0033] In some exemplary embodiments, the air conditioning system further includes a filter (not shown in the figure), which is disposed between the fluorine pump module and the throttling component 200 and is used to filter impurities in the refrigerant.

[0034] In some exemplary embodiments, Figure 1 and Figure 3As shown, the fluorine pump module includes a fluorine pump 610 and a third one-way valve 620 arranged in parallel, and the third one-way valve 620 is arranged to conduct from the first heat exchanger 100 to the second heat exchanger 300 through the third one-way valve 620.

[0035] In some exemplary embodiments, Figure 1 and Figure 3 As shown, the throttling component 200 is an electronic expansion valve or a capillary tube, etc.

[0036] Compressor 410 operation mode: The compressor 410 is running, the fluorine pump 610 is stopped, and the refrigerant flowing out of the outlet of the compressor 410 passes through the second one-way valve 470, the first heat exchanger 100, the third one-way valve 620, the throttling component 200, the second heat exchanger 300, and the gas-liquid separation device in sequence, and then flows back to the compressor 410 from the inlet of the compressor 410.

[0037] Operation mode of the fluorine pump 610: the compressor 410 stops, the fluorine pump 610 runs, and the refrigerant flowing out from the outlet of the fluorine pump 610 passes through the throttling component 200, the second heat exchanger 300, the gas-liquid separation device, the first one-way valve 460, and the first heat exchanger 100 in sequence, and then flows back to the fluorine pump 610 from the inlet of the fluorine pump 610. In the operation mode of the fluorine pump 610, when the refrigerant flowing out from the outlet of the second heat exchanger 300 is a two-phase refrigerant, the two-phase refrigerant flows into the gas-liquid separation device from the inlet connecting pipe 431, and the gas-liquid separation device separates the liquid refrigerant and the gaseous refrigerant in the two-phase refrigerant. The separated liquid refrigerant flows from the liquid outlet connecting pipe 433 to the first heat exchanger 100, and the separated gaseous refrigerant flows from the air outlet connecting pipe 432 to the inlet of the compressor 410, and the refrigerant flowing into the air outlet connecting pipe 432 and the inlet of the compressor 410 accumulates in the air outlet connecting pipe 432 and the inlet of the compressor 410. Under the action of gas pressure, the liquid refrigerant in the gas-liquid separation device is prevented from flowing into the air outlet connecting pipe 432 or even the inlet of the compressor 410, thereby avoiding liquid accumulation in the compressor 410.

[0038] The embodiment of the present invention also provides an air conditioning system, such as Figure 5 As shown, it includes a compressor module, a first heat exchanger 100, a fluorine pump module, a throttling component 200 and a second heat exchanger 300 connected in sequence end to end; the compressor module includes a switch valve 800, a tee 700 and a compressor 410, a first connection port of the tee 700 is connected to the second heat exchanger 300, a second connection port of the tee 700 is connected to the inlet of the compressor 410 through the switch valve 800, and a third connection port of the tee 700 and an outlet of the compressor 410 are both connected to the first heat exchanger 100.

[0039] In the operation mode of the compressor 410, the switch valve 800 is opened; in the operation mode of the fluorine pump 610, the switch valve 800 is closed. The closed switch valve 800 prevents the refrigerant flowing out of the outlet of the second heat exchanger 300 from flowing to the inlet of the compressor 410, thereby avoiding liquid accumulation in the compressor 410. Therefore, during the operation of the air-conditioning system, the compressor 410 is not easily damaged.

[0040] In some exemplary embodiments, Figure 5 As shown, the compressor module further includes: a first one-way valve 460, which is connected to the third connection port of the three-way valve 700 and the first heat exchanger 100, and is configured to be conducted from the third connection port of the three-way valve 700 to the first heat exchanger 100 through the first one-way valve 460; and a second one-way valve 470, which is connected to the outlet of the compressor 410 and the first heat exchanger 100, and is configured to be conducted from the outlet of the compressor 410 to the first heat exchanger 100 through the second one-way valve 470, and is used to prevent the refrigerant from flowing from the outlet of the compressor 410 to the compressor 410 when the fluorine pump 610 is running. Among them, the first one-way valve 460 and the second one-way valve 470 are connected to the first heat exchanger 100 through another three-way valve.

[0041] In some exemplary embodiments, Figure 5 As shown, the air conditioning system further includes a filter 500, which is disposed between the fluorine pump module and the throttling component 200 and is used to filter impurities in the refrigerant.

[0042] In some exemplary embodiments, Figure 5 As shown, the fluorine pump module includes a fluorine pump 610 and a third one-way valve 620 arranged in parallel, and the third one-way valve 620 is arranged to conduct from the first heat exchanger 100 to the second heat exchanger 300 through the third one-way valve 620.

[0043] In some exemplary embodiments, Figure 5 As shown, the throttling component 200 is an electronic expansion valve or a capillary tube, etc.

[0044] Compressor 410 operation mode: The compressor 410 is running, the fluorine pump 610 is stopped, and the switch valve 800 is opened. The refrigerant flowing out of the outlet of the compressor 410 passes through the second one-way valve 470, the first heat exchanger 100, the third one-way valve 620, the throttling component 200, the second heat exchanger 300, the three-way valve 700, and the switch valve 800 in sequence, and then flows back to the compressor 410 from the inlet of the compressor 410.

[0045] Operation mode of the fluorine pump 610: the compressor 410 stops, the fluorine pump 610 runs, the switch valve 800 is closed, and the refrigerant flowing out of the outlet of the fluorine pump 610 passes through the throttling component 200, the second heat exchanger 300, the three-way valve 700, the first one-way valve 460, and the first heat exchanger 100 in sequence, and then flows back to the fluorine pump 610 from the inlet of the fluorine pump 610. The switch valve 800 prevents the refrigerant passing through the three-way valve 700 from flowing to the inlet of the compressor 410.

[0046] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0051] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An air conditioning system, characterized in that: It comprises a compressor module, a first heat exchanger, a fluorine pump module, a throttling component and a second heat exchanger which are connected end to end in sequence; the compressor module comprises a gas-liquid separation device and a compressor, the gas-liquid separation device has an inlet connecting pipe, an air outlet connecting pipe and a liquid outlet connecting pipe, the inlet connecting pipe is connected to the second heat exchanger, the air outlet connecting pipe is connected to the inlet of the compressor, and the liquid outlet connecting pipe and the outlet of the compressor are both connected to the first heat exchanger.

2. The air conditioning system according to claim 1, characterized in that: The gas-liquid separation device is a gas-liquid separator, the inlet connecting pipe and the gas outlet connecting pipe are both connected to the top of the gas-liquid separator, and the liquid outlet connecting pipe is connected to the bottom of the gas-liquid separator.

3. The air conditioning system according to claim 2, characterized in that: The compressor module further includes an auxiliary connecting pipe, through which the liquid outlet connecting pipe is connected to the first heat exchanger, and the lowest position of the liquid outlet connecting pipe is located above the highest position of the auxiliary connecting pipe.

4. The air conditioning system according to claim 1, characterized in that: The gas-liquid separation device is a tee, which includes a gas-liquid separation pipe, the gas outlet connecting pipe, the inlet connecting pipe and the liquid outlet connecting pipe. The gas-liquid separation pipe is horizontally arranged, the gas outlet connecting pipe is connected to the upper part of the peripheral wall of the gas-liquid separation pipe, and the inlet connecting pipe and the liquid outlet connecting pipe are connected to both ends of the gas-liquid separation pipe.

5. The air conditioning system according to claim 4, characterized in that: The compressor module also includes an auxiliary connecting pipe, which is located below the gas-liquid separation pipe and connects the liquid outlet connecting pipe and the first heat exchanger. The highest position of the inlet connecting pipe is above the highest position of the auxiliary connecting pipe.

6. The air conditioning system according to any one of claims 1 to 5, characterized in that: The highest position of the inlet connecting pipe is located below the highest position of the outlet connecting pipe.

7. The air conditioning system according to any one of claims 1 to 5, characterized in that: The air outlet connecting pipe comprises a bent pipe section, and the concave side of the bent pipe section faces downward.

8. The air conditioning system according to any one of claims 1 to 5, characterized in that: The compressor module further comprises: a first one-way valve, connecting the liquid outlet connecting pipe and the first heat exchanger; and A second one-way valve connects the outlet of the compressor and the first heat exchanger.

9. The air conditioning system according to any one of claims 1 to 5, characterized in that: The air conditioning system further comprises a filter, and the filter is arranged between the fluorine pump module and the throttling component.

10. The air conditioning system according to any one of claims 1 to 5, characterized in that: The fluorine pump module comprises a fluorine pump and a third one-way valve which are arranged in parallel.

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