CN218884341U

CN218884341U - Air conditioning system

Info

Publication number: CN218884341U
Application number: CN202223209480.1U
Authority: CN
Inventors: 申传涛; 武连发; 焦华超; 冯涛
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-04-18
Anticipated expiration: 2032-12-01

Abstract

The present disclosure relates to an air conditioning system, comprising: the system comprises a refrigerant circulation loop, a heat exchanger and a heat exchanger, wherein the refrigerant circulation loop comprises a compressor (1), a water-cooling heat exchanger (2) and an indoor unit (3) which are connected in sequence; the water immersion sensor group (8) is arranged on the refrigerant circulating loop, is positioned between the air suction port of the compressor (1) and the water-cooling heat exchanger (2), and is configured to send out a water immersion signal when immersed; a first emergency valve (51) provided at the suction port of the compressor (1) and configured to restrict the entry of a refrigerant containing water into the compressor (1) when turned off.

Description

Air conditioning system

Technical Field

The present disclosure relates to the field of air conditioners, and more particularly, to an air conditioning system.

Background

The water source multi-split system combines a water source heat pump technology with an air source multi-split system, the cold and hot source sides are the same as the water source heat pump system, water is used as an energy transportation medium, the indoor side is the same as the multi-split system, and a refrigerant is used as the energy transportation medium, so that the water source multi-split system has the advantages of high energy efficiency, sustainable heating and the like.

SUMMERY OF THE UTILITY MODEL

The inventor finds that in the related art, the water-cooling heat exchanger of the water source multi-split air-conditioning system is frequently damaged along with the change of factors such as pressure, temperature and the like, so that water enters the air-conditioning system, is mixed with a refrigerant, is sucked by the compressor, causes liquid impact and other phenomena, damages the compressor or the whole air-conditioning system, and has the disadvantages of high maintenance cost, long time consumption and complex maintenance.

In view of this, the present disclosure provides an air conditioning system.

In one aspect of the present disclosure, there is provided an air conditioning system including:

the refrigerant circulation loop comprises a compressor, a water-cooling heat exchanger and an indoor unit which are sequentially connected;

the water immersion sensor group is arranged on the refrigerant circulating loop, positioned between an air suction port of the compressor and the water-cooling heat exchanger and configured to send out a water immersion signal when immersed;

the first emergency valve is arranged at a suction port of the compressor and is configured to limit the water-containing refrigerant from entering the compressor when the first emergency valve is disconnected.

In some embodiments, the refrigerant circulation circuit further includes:

the four-way valve is respectively connected with the compressor and the water-cooling heat exchanger and has a first state and a second state;

in a first state of the four-way valve, a refrigerant circulation loop is switched into a refrigeration circulation loop, and a refrigerant flows through the water-cooling heat exchanger from an exhaust port of the compressor, then enters the indoor unit and finally returns to an air suction port of the compressor;

in the second state of the four-way valve, the refrigerant circulation loop is switched to a heating circulation loop, and the refrigerant flows through the indoor unit from the air outlet of the compressor, then enters the water-cooling heat exchanger and finally returns to the air suction port of the compressor.

In some embodiments, the refrigerant circulation circuit further includes:

the gas-liquid separator is connected with a suction port of the compressor and the four-way valve;

the first emergency valve is connected between the air outlet of the gas-liquid separator and the air suction port of the compressor.

In some embodiments, the water immersion sensor set comprises:

the first water sensor is arranged between the indoor unit and the water-cooling heat exchanger; and

and the second water sensor is arranged between the four-way valve and the air inlet of the gas-liquid separator.

In some embodiments, further comprising:

and the second emergency valve is arranged between the water-cooling heat exchanger and the four-way valve.

In some embodiments, further comprising:

the first pressure sensor is arranged between the exhaust port of the compressor and the four-way valve and is configured to detect a first pressure of the refrigerant on an exhaust pipeline of the compressor.

In some embodiments, further comprising:

the temperature sensor is arranged at the exhaust port of the gas-liquid separator and is configured to detect the temperature of the refrigerant in the gas-liquid separation pipe of the exhaust port of the gas-liquid separator;

and the second pressure sensor is arranged at the inlet of the gas-liquid separator and is configured to detect the second pressure of the refrigerant at the inlet of the gas-liquid separator.

In some embodiments, further comprising:

and the water-cooling circulation loop is connected with the water-cooling heat exchanger through a quick coupling.

In some embodiments, the refrigerant circulation circuit further includes:

and the liquid storage tank is arranged between the water-cooling heat exchanger and the indoor unit and is configured to store water overflowing from the pipeline.

In some embodiments, the indoor unit includes:

a throttling unit and an evaporator connected in series.

In some embodiments, the water-cooled heat exchanger is a plate heat exchanger.

In some embodiments, the air conditioning system is a water source multi-split system.

Therefore, according to the embodiment of the disclosure, the water immersion sensor group is arranged on the refrigerant circulation loop to monitor the water outlet condition on the refrigerant circulation loop, and the first emergency valve is arranged to control the on-off of the refrigerant circulation loop, so that when the refrigerant immersion caused by the water leakage of the water-cooling heat exchanger is monitored, the first emergency valve can be timely cut off, and a series of faults such as liquid impact caused by the fact that the water and the refrigerant are mixed and sucked by the compressor when the water is further diffused into the whole air conditioning system are prevented, and the operation safety and reliability of the air conditioning system can be effectively guaranteed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

The present disclosure may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic block diagram of some embodiments of an air conditioning system according to the present disclosure;

FIG. 2 is a schematic diagram of a refrigeration cycle circuit according to some embodiments of the air conditioning system of the present disclosure;

fig. 3 is a schematic diagram of a heating cycle loop according to some embodiments of the air conditioning system of the present disclosure.

It should be understood that the dimensions of the various parts shown in the drawings are not drawn to scale. Further, the same or similar reference numerals denote the same or similar components.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.

The use of "first," "second," and similar words in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be intervening devices between the specific device and the first device or the second device. When a particular device is described as being coupled to another device, it can be directly coupled to the other device without intervening devices or can be directly coupled to the other device with intervening devices.

All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In the water source multi-connected unit in the related technology, a water-cooling heat exchanger is used for heat exchange between a refrigerant and water, and the water-cooling heat exchanger is frequently damaged, such as frost cracking, in the working process along with the influence of pressure and temperature, particularly in a low-temperature heating environment, so that water enters the inside of an air conditioning system and is mixed with the refrigerant, and the refrigerant is sucked by a compressor to cause liquid impact and other phenomena, so that the compressor or the whole air conditioning system is damaged, and the water source multi-connected unit is huge in maintenance cost, long in time consumption and complex in maintenance.

In view of this, in one aspect of the present disclosure, an air conditioning system is provided. Fig. 1 is a schematic structural diagram of some embodiments of an air conditioning system according to the present disclosure, with reference to fig. 1, the air conditioning system including: refrigerant circulation loop, water immersion sensor group 8, first emergency valve 51.

The refrigerant circulation loop comprises a compressor 1, a water-cooling heat exchanger 2 and an indoor unit 3 which are sequentially connected, and the water immersion sensor group 8 is arranged on the refrigerant circulation loop, is positioned between an air suction port of the compressor 1 and the water-cooling heat exchanger 2, and is configured to send out a water immersion signal when immersed in water. The first emergency valve 51 is provided at a suction port of the compressor 1, and is configured to restrict the refrigerant containing water from entering the compressor 1 when turned off. When the flood sensor bank 8 signals flooding, the first emergency valve bank 51 may be opened.

The water-cooled heat exchanger 2 includes but is not limited to a plate heat exchanger, and the water-cooled heat exchanger 2 can be connected to the refrigerant circulation loop through a quick coupling 2 so as to be conveniently dismounted and maintained in time. The water immersion sensor group 8 detects by using a liquid conduction principle, the two-pole probe is insulated by air and a refrigerant when the water immersion sensor group 8 is normal, and the two-pole probe is conducted when the water immersion sensor group 8 is immersed by water in the refrigerant to send an immersion signal.

In the embodiment, the water immersion sensor group 8 is arranged on the refrigerant circulation loop to monitor the water outlet condition on the refrigerant circulation loop, and the first emergency valve 51 is arranged to control the on-off of the refrigerant circulation loop, so that when the refrigerant immersion caused by the water leakage of the water-cooling heat exchanger 2 and other reasons is monitored, the first emergency valve 51 can be cut off in time, a series of faults such as liquid impact caused by the fact that water and the refrigerant are mixed and sucked by a compressor and the like are prevented from being further diffused into the whole air conditioning system, and the operation safety and the reliability of the air conditioning system can be effectively guaranteed.

Fig. 2 is a schematic structural diagram of a refrigeration cycle circuit according to some embodiments of the air conditioning system of the present disclosure, fig. 3 is a schematic structural diagram of a heating cycle circuit according to some embodiments of the air conditioning system of the present disclosure, and the direction of arrows in fig. 2 and 3 is a flow direction of a refrigerant. Referring to fig. 2 and 3, in some embodiments, the refrigerant circulation circuit further includes: and the four-way valve 6, the four-way valve 6 is respectively connected with the compressor 1 and the water-cooling heat exchanger 2, and the four-way valve 6 has a first state and a second state.

In the first state of the four-way valve 6, the refrigerant circulation circuit is switched to a refrigeration circulation circuit, and the refrigerant flows through the water-cooled heat exchanger 2 from the exhaust port of the compressor 1, then enters the indoor unit 3, and finally returns to the suction port of the compressor 1. In the second state of the four-way valve 6, the refrigerant circulation circuit is switched to the heating circulation circuit, and the refrigerant flows from the discharge port of the compressor 1 through the indoor unit 3, then enters the water-cooling heat exchanger 2, and finally returns to the suction port of the compressor 1.

In this embodiment, the four-way valve 6 is provided to switch the air conditioning system between the cooling and heating modes, so that the water immersion condition in the refrigerant circulation loop can be monitored in different heating modes, and the first emergency valve 51 can be timely disconnected when the water immersion occurs, thereby preventing the water from further diffusing.

Referring to fig. 1 to 3, in some embodiments, the refrigerant circulation circuit further includes: and a gas-liquid separator 7, wherein the gas-liquid separator 7 is connected to a suction port of the compressor 1 and the four-way valve 6. The first emergency valve 51 is connected between the outlet of the gas-liquid separator 7 and the suction port of the compressor 1.

In this embodiment, the first emergency valve 51 is connected between the exhaust port of the gas-liquid separator 7 and the suction port of the compressor 1, so that water can be prevented from entering the compressor 1 in both the cooling mode and the heating mode of the air conditioning system, thereby preventing a series of failures such as liquid impact caused by the mixture of water and refrigerant sucked by the compressor, and facilitating the improvement of the safety of the compressor and the maintenance efficiency of the air conditioning system.

Referring to fig. 1-3, in some embodiments, the water immersion sensor set 8 includes: a first water sensor 81 and a second water sensor 82. The first water sensor 81 is provided between the indoor unit 3 and the water-cooled heat exchanger 2, and the second water sensor 82 is provided between the four-way valve 6 and the air inlet of the gas-liquid separator 7. When both the first and

second water sensors

81, 82 send a signal of flooding, the compressor 1 can be turned off and the first emergency valve 51 can be opened.

In this embodiment, the first water sensor 81 may be disposed between the indoor unit 3 and the water-cooled heat exchanger 2, and the second water sensor 82 may be disposed between the four-way valve 6 and the air inlet of the gas-liquid separator 7, so that various water immersion conditions on the refrigerant circulation circuit may be comprehensively and reliably monitored, and when both the first water sensor 81 and the second water sensor 82 send out water immersion signals, the compressor 1 is turned off and the connection with the first emergency valve 51 is cut off. The damage condition of the water-cooling heat exchanger 2 can be found in time, water is effectively prevented from entering the compressor 1 and the whole air conditioning system, the damage risk of the air conditioning system is reduced as far as possible, the accuracy of recognizing water immersion can be improved, and misjudgment is avoided.

Referring to fig. 1-3, in some embodiments, the air conditioning system further comprises: the second emergency valve 52 and the second emergency valve 52 are arranged between the water-cooling heat exchanger 2 and the four-way valve 6, so that high-pressure protection and refrigerant backflow caused when the second emergency valve 52 is disconnected can be avoided. When both the first and

second water sensors

81 and 82 send out the water immersion signal, the compressor 1 may be turned off and the first emergency valve 51 may be turned off, and then the second emergency valve 52 may be turned off after a first preset time delay. Or to shut down the compressor 1 and simultaneously disconnect the first 51 and second 52 emergency valves. The first preset duration may be set to 5s.

In this embodiment, a second emergency valve 52 may be further provided, and when the first water sensor 81 and the second water sensor 82 both send out the water immersion signal, the first emergency valve 51 and the second emergency valve 52 are sequentially closed, so that effective buffering is formed, and refrigerant high-pressure impact and high-pressure protection caused by sudden shutdown of the air conditioning unit are avoided.

Referring to fig. 1-3, in some embodiments, the air conditioning system further comprises: the first pressure sensor 91 is disposed between the discharge port of the compressor 1 and the four-way valve 6, and the first pressure sensor 91 is configured to detect a first pressure of the refrigerant in the discharge line of the compressor 1.

When the first water sensor 81 or the second water sensor 82 sends out a water immersion signal, the maximum value and the minimum value of the first pressure of the refrigerant in a second preset time period on the exhaust pipe of the compressor 1 can be determined, and then the maximum value of the first saturation temperature corresponding to the maximum value of the first pressure of the refrigerant and the minimum value of the first saturation temperature corresponding to the minimum value of the first pressure of the refrigerant are determined.

And then determining the difference between the maximum value of the first saturation temperature and the minimum value of the first saturation temperature, and switching the opening and closing of the first emergency valve 51 and the second emergency valve 52 according to the magnitude relation between the first saturation temperature difference between the maximum value and the minimum value of the first saturation temperature of the refrigerant in a second preset time period and a first preset temperature threshold value.

The first pressure is the refrigerant high pressure of the air conditioning system. The first predetermined temperature threshold may be 2-5 deg.C and the second predetermined duration may be 40s.

In this embodiment, when only one water sensor sends out a water immersion signal, in order to prevent false alarm, the water immersion condition of the air conditioning system can be comprehensively judged by combining the air conditioning system parameters such as the high-pressure fluctuation value of the refrigerant within the second preset time period, and the accuracy of water immersion monitoring is improved.

Referring to fig. 1-3, in some embodiments, the air conditioning system further includes a temperature sensor 92 and a second pressure sensor 93. The temperature sensor 92 is provided at the exhaust port of the gas-liquid separator 7, and is configured to detect the temperature of the refrigerant in the vapor separation pipe at the exhaust port of the gas-liquid separator 7. The second pressure sensor 93 is disposed at the inlet of the gas-liquid separator 7, and is configured to detect a second pressure of the refrigerant at the inlet of the gas-liquid separator 7.

When the first saturation temperature difference is greater than the first preset temperature threshold, a second saturation temperature corresponding to the second pressure can be determined, and the opening and closing of the first emergency valve 51 and the second emergency valve 52 are switched according to the magnitude relation between the difference between the temperature of the steam outlet pipe of the refrigerant and the second saturation temperature and the second preset temperature threshold. The second preset temperature threshold value can be 0-1 ℃, and the second saturation temperature is the low-pressure temperature of the refrigerant.

In this embodiment, when the first saturation temperature difference of the refrigerant in the second preset duration is greater than the first preset temperature threshold, it is determined whether the unit has a serious liquid return condition according to the difference between the vapor tap pipe temperature of the refrigerant and the second saturation temperature, and when the unit has a serious liquid return condition, the refrigerant circulation loop of the air conditioning system is filled with water, and at this time, the first emergency valve group 51 and the second emergency valve 51 are cut off in time and the compressor 1 is closed, so as to prevent further diffusion of water in the refrigerant circulation loop.

When the difference between the temperature of the vapor outlet pipe of the refrigerant and the second saturation temperature is greater than the second preset temperature threshold, the compressor 1 is closed and the first emergency valve 51 is turned off, and then the second emergency valve 52 is turned off after the first preset time is delayed. Or to simultaneously open the first 51 and second 52 emergency valves when the compressor 1 is switched off. If the difference between the temperature of the steam outlet pipe of the refrigerant and the second saturation temperature is greater than the second preset temperature threshold, it indicates that the unit has a serious liquid return condition, so that the first emergency valve 51 and the second emergency valve 52 can be cut off and the compressor 1 can be closed, and further water diffusion in the refrigerant circulation loop can be prevented.

When the difference between the vapor outlet pipe temperature of the refrigerant and the second saturation temperature is less than or equal to a second preset temperature threshold, the first emergency valve 51 and the second emergency valve 52 may be maintained in an open state. If the difference value between the temperature of the steam outlet pipe of the refrigerant and the second saturation temperature is less than or equal to a second preset temperature threshold value, the air conditioning system can be enabled to maintain normal operation at the moment.

When the first saturation temperature difference is less than or equal to the first preset temperature threshold, the first and

second contingency valves

51 and 52 may be maintained in an open state. In this embodiment, if the first saturation temperature difference of the refrigerant is less than or equal to the first predetermined temperature threshold, the air conditioning system may be maintained to operate normally.

Referring to fig. 1-3, in some embodiments, the air conditioning system further comprises: and the water-cooling circulation loop 10 is connected with the water-cooling heat exchanger 2 through a quick joint 12, and the water-cooling circulation loop 10 is connected with the water-cooling heat exchanger 2 through the quick joint 12. The water source circulation loop is provided with a water source, a water pump, a flow regulating valve, a water inlet sensor and a water outlet sensor, and the water inlet temperature sensor and the water outlet temperature sensor are respectively arranged at two ends of the water-cooling heat exchanger 2.

In this embodiment, through adopting quick-operation joint 12 to be convenient for quick detach to change, cut off when emergent valves 5 with the refrigerant pipeline be connected, when the refrigerant is arranged in not getting into compressor 1 between first emergency valve 51 and the second emergency valve 51, do not have the refrigerant outflow during changing water-cooled heat exchanger 2, also need not change the refrigerant again, can improve the convenience and the economic nature of maintenance.

Referring to fig. 1 to 3, in some embodiments, the refrigerant circulation circuit further includes: and a liquid storage tank 11, wherein the liquid storage tank 11 is arranged between the water-cooled heat exchanger 2 and the indoor unit 3 and is configured to store water overflowing from the pipeline. The liquid storage tank 11 in this embodiment can not only adjust the amount of the circulating refrigerant, but also buffer water to prevent the water from entering the compressor 1 too quickly.

With reference to fig. 1 to 3, in some embodiments the indoor unit 3 comprises: a throttling unit and an evaporator connected in series. The air conditioning system further includes: the first refrigerant temperature sensor and the second refrigerant temperature sensor are arranged on the refrigerant circulating loop and are respectively positioned at two ends of the water-cooling heat exchanger 2; a heating electronic expansion valve arranged between the first water sensor 81 and the liquid storage tank 11; an oil-liquid separator provided between the compressor 1 and the four-way valve 6; a high-pressure switch arranged between the compressor 1 and the oil-liquid separator; a compressor discharge temperature sensor arranged at the discharge port of the compressor 1; the oil return electromagnetic valve is connected with the compressor 1 in parallel; and the steam inlet pipe temperature sensor is arranged at the inlet of the gas-liquid separator 7 and is used for detecting the temperature of the refrigerant at the inlet of the gas-liquid separator 7.

In some embodiments, the water-cooled heat exchanger 2 is a plate heat exchanger, and the air conditioning system is a water source multi-split system.

In some embodiments, the first preset duration is 5s. In this embodiment, the first preset time period may be adjusted in actual application according to parameters of the air conditioning system.

Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. Those skilled in the art can now fully appreciate how to implement the teachings disclosed herein, in view of the foregoing description.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. An air conditioning system, comprising:

the system comprises a refrigerant circulation loop, a heat exchanger and a heat exchanger, wherein the refrigerant circulation loop comprises a compressor (1), a water-cooling heat exchanger (2) and an indoor unit (3) which are sequentially connected;

the water immersion sensor group (8) is arranged on the refrigerant circulating loop, is positioned between the air suction port of the compressor (1) and the water-cooling heat exchanger (2), and is configured to send out a water immersion signal when immersed;

a first emergency valve (51) provided at the suction port of the compressor (1) and configured to restrict the entry of a refrigerant containing water into the compressor (1) when turned off.

2. The air conditioning system as claimed in claim 1, wherein the refrigerant circulation circuit further comprises:

the four-way valve (6) is respectively connected with the compressor (1) and the water-cooling heat exchanger (2), and the four-way valve (6) has a first state and a second state;

in a first state of the four-way valve (6), the refrigerant circulation loop is switched to a refrigeration circulation loop, and a refrigerant flows through the water-cooling heat exchanger (2) from an exhaust port of the compressor (1), then enters the indoor unit (3) and finally returns to an air suction port of the compressor (1);

and in a second state of the four-way valve (6), the refrigerant circulation loop is switched to a heating circulation loop, and a refrigerant flows through the indoor unit (3) from an exhaust port of the compressor (1), then enters the water-cooling heat exchanger (2) and finally returns to an air suction port of the compressor (1).

3. The air conditioning system as claimed in claim 2, wherein the refrigerant circulation circuit further comprises:

a gas-liquid separator (7) connected to the suction port of the compressor (1) and the four-way valve (6);

wherein the first emergency valve (51) is connected between the air outlet of the gas-liquid separator (7) and the air suction port of the compressor (1).

4. Air conditioning system according to claim 3, characterized in that said water immersion sensor group (8) comprises:

the first water sensor (81) is arranged between the indoor unit (3) and the water-cooled heat exchanger (2); and

and the second water sensor (82) is arranged between the four-way valve (6) and the air inlet of the gas-liquid separator (7).

5. The air conditioning system as set forth in claim 4, further comprising:

and the second emergency valve (52) is arranged between the water-cooling heat exchanger (2) and the four-way valve (6).

6. The air conditioning system of claim 5, further comprising:

the first pressure sensor (91) is arranged between an exhaust port of the compressor (1) and the four-way valve (6) and is configured to detect a first pressure of a refrigerant on an exhaust pipeline of the compressor (1).

7. The air conditioning system of claim 6, further comprising:

a temperature sensor (92) provided at an exhaust port of the gas-liquid separator (7) and configured to detect a vapor separation pipe temperature of the refrigerant at the exhaust port of the gas-liquid separator (7);

and a second pressure sensor (93) disposed at an inlet of the gas-liquid separator (7) and configured to detect a second pressure of the refrigerant at the inlet of the gas-liquid separator (7).

8. The air conditioning system of claim 1, further comprising:

and the water-cooling circulation loop (10) is connected with the water-cooling heat exchanger (2) through a quick joint (12).

9. The air conditioning system as claimed in claim 1, wherein the refrigerant circulation circuit further comprises:

and the liquid storage tank (11) is arranged between the water-cooling heat exchanger (2) and the indoor unit (3) and is configured to store water overflowing from a pipeline.

10. Air conditioning system according to claim 1, characterized in that said indoor unit (3) comprises:

a throttling unit and an evaporator connected in series.

11. Air conditioning system according to claim 1, wherein the water-cooled heat exchanger (2) is a plate heat exchanger.

12. The air conditioning system of claim 1, wherein the air conditioning system is a water source multi-split system.