Air conditioning system and detection method

Abstract

The application provides an air conditioning system and a detection method, the air conditioning system comprising: a heat exchange pipeline arranged in a heat exchange space; the heat exchange pipeline is used for conveying refrigerant; a refrigerant leakage sensor arranged in the heat exchange space; an air supply structure arranged in the heat exchange space; the air supply structure is used for blowing air in the heat exchange space to the refrigerant leakage sensor; and a control module used for controlling the opening and closing of the air supply structure, so that the air conditioning system solves the problem that the refrigerant leakage sensor cannot detect whether refrigerant leakage exists in the external environment of an indoor unit when the indoor unit stops or the fan of the indoor unit is faulty.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, in particular to an air conditioning system and a detection method. BACKGROUND

[0002] When the existing air conditioning system uses flammable and toxic refrigerants such as R32, in order to protect the safety of users, a refrigerant leakage sensor is generally installed in the indoor unit to detect whether there is refrigerant leakage in the indoor unit. The detection method is that when the refrigerant concentration in the indoor unit reaches a certain value, the refrigerant leakage sensor will alarm, thereby starting the corresponding protection operation of the air conditioning system. The disadvantage of this detection method is that it can only be detected in the indoor unit. When the indoor unit is turned off or the indoor fan fails to operate, the air in the indoor unit cannot circulate, and it is impossible to detect whether there is refrigerant leakage in the external environment of the indoor unit. Therefore, the detection accuracy of the refrigerant leakage sensor is greatly reduced.

[0003] For modular multi-split air conditioning systems and the like, the connecting pipes used for installation are as long as hundreds of meters or even several hundred meters. Most of these connecting pipes are in the indoor space, and the connecting pipes are connected by welding. Over a long period of use, refrigerant leakage may occur at these welding points. If the leaking welding point is not in the room, the refrigerant leakage sensor installed in the indoor unit cannot detect it. If the leaking welding point is in the room, when the indoor unit is turned off or the indoor fan fails to operate, the refrigerant leakage sensor cannot detect the refrigerant leakage. In either case, there is a great safety hazard.

[0004] Some central air conditioning systems using refrigerated water and other cold carriers for refrigeration have air conditioning units installed in basements, such as central air conditioning systems used in some libraries. Since the indoor space uses refrigerated water for refrigeration, no refrigerant leakage sensor is installed on the indoor side. If the refrigerant in the unit installed in the basement leaks, the refrigerant will gradually drift to the ground space. When the concentration reaches a certain level, there will be a fire hazard, which is very dangerous.

[0005] Therefore, in the prior art, there is a problem that the refrigerant leakage sensor cannot detect whether there is refrigerant leakage in the external environment of the indoor unit when the indoor unit is turned off or the indoor fan fails to operate. SUMMARY

[0006] The present application aims to overcome the above technical deficiencies and provide an air conditioning system and a detection method to solve the problem that the refrigerant leakage sensor cannot detect whether there is refrigerant leakage in the external environment of the indoor unit when the indoor unit is turned off or the indoor fan fails to operate.

[0007] To achieve the above technical purposes, the present application adopts the following technical solutions: providing an air conditioning system, comprising: a heat exchange pipeline; the heat exchange pipeline is used for conveying refrigerant; a refrigerant leakage sensor, the refrigerant leakage sensor is arranged in the heat exchange space; a supply air structure, arranged in the heat exchange space; the supply air structure is used for blowing air in the heat exchange space to the refrigerant leakage sensor; a control module, the control module is used for controlling the opening and closing of the supply air structure.

[0008] Further, the heat exchange space comprises: an indoor unit; a room, the indoor unit is arranged in the room, the refrigerant leakage sensor comprises a first sensor arranged inside the indoor unit, and the supply air structure comprises a first fan component arranged at an air inlet of the indoor unit.

[0009] Further, a damper is arranged on the indoor unit, the damper is used for controlling the opening and closing of the air inlet; the heat exchange pipeline comprises a first heat exchange pipeline arranged in the room.

[0010] Further, the first fan component is arranged above the air inlet; or, the first fan component is arranged on the indoor unit.

[0011] Further, the heat exchange space comprises: a corridor, the heat exchange pipeline comprises a second heat exchange pipeline arranged in the corridor; the refrigerant leakage sensor comprises a second sensor arranged at the top of the corridor; the supply air structure comprises a second fan component arranged in the corridor, and the second fan component is used for blowing air to the second sensor.

[0012] Further, the room is multiple; the indoor unit is multiple; multiple indoor units are arranged in one-to-one correspondence with multiple rooms.

[0013] Further, the heat exchange space comprises: a basement, a main unit; the main unit is arranged in the basement, the refrigerant leakage sensor comprises a third sensor arranged in the basement, and the third sensor is arranged at the top of the basement; the supply air structure comprises a third fan component arranged in the basement.

[0014] Further, the heat exchange space comprises: a floor, located above the basement; the heat exchange pipeline comprises a third heat exchange pipeline arranged in the floor, and the third heat exchange pipeline is connected with the main unit of the basement; the refrigerant leakage sensor comprises a fourth sensor arranged in the floor, and the fourth sensor is arranged at the top of the floor; the supply air structure comprises a fourth fan component arranged in the floor.

[0015] Further, the floors are multiple, and the multiple floors are arranged in sequence along a vertical direction; the third sensor and the fourth fan component are arranged in a lowermost floor.

[0016] Further, the refrigerant leakage sensors are multiple, and the multiple refrigerant leakage sensors are arranged at intervals.

[0017] A detection method suitable for the air conditioning system, the detection method comprising: arranging a refrigerant leakage sensor in a heat exchange space provided with an air conditioner; blowing air in the heat exchange space to the refrigerant leakage sensor to detect whether refrigerant leaks; controlling an opening frequency of the air supply structure according to a refrigerant state of the air conditioner; wherein the refrigerant state of the air conditioner comprises a type of refrigerant of the air conditioner and a filling amount of refrigerant of the air conditioner.

[0018] Further, when the refrigerant of the air conditioner only uses a refrigerant for refrigeration, the control module controls the opening frequency of the fan of the air supply structure according to the filling amount of the refrigerant of the air conditioner; wherein the greater the filling amount of the refrigerant, the higher the opening frequency of the fan.

[0019] Further, when the refrigerant of the air conditioner uses a refrigerant and a cold carrier, the control module controls the opening frequency of the fan of the air supply structure according to a danger degree of the refrigerant in the internal circulation of the air conditioner; wherein the higher the danger degree, the greater the opening frequency of the fan; the danger degree of the refrigerant comprises flammability of the refrigerant and toxicity of the refrigerant.

[0020] Further, the detection method comprises: arranging an air valve at an air inlet of the indoor unit, using the air valve to suck air outside the indoor unit into the indoor unit, and using a refrigerant leakage sensor arranged inside the indoor unit to detect whether refrigerant in a heat exchange pipeline in a heat exchange space in which the indoor unit is located leaks.

[0021] Further, the detection method comprises: arranging the refrigerant leakage sensor and the air supply structure at an upper part of a heat exchange space without an indoor unit to detect whether refrigerant in a heat exchange pipeline in the heat exchange space leaks.

[0022] Advantages:

[0023] 1. When the indoor unit is turned off or the indoor fan fails, the air conditioning system of the embodiment periodically blows air at the top of the room to the refrigerant leakage sensor through the fan at the top of the indoor unit, improving the accuracy of refrigerant leakage detection.

[0024] 2, the air conditioning system of the embodiment of the present application, when the air conditioning connecting pipe welding point leaks, a refrigerant leakage sensor is added above the indoor space through which the connecting pipe passes, the fan is started regularly to blow the air at the top of the room to the refrigerant leakage sensor, refrigerant leakage detection is realized, and the safety risk caused by refrigerant leakage of the connecting pipe is avoided.

[0025] 3, the air conditioning system of the embodiment of the present application adds a refrigerant leakage sensor at the top of the basement or the top of the first floor of the high-rise building on the ground, starts the fan regularly to blow the air to the refrigerant leakage sensor, realizes refrigerant leakage detection, and avoids the safety risk caused by the refrigerant leakage of the basement air conditioner host gathered at the top. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic diagram of one embodiment of the air conditioning system adopted by the embodiment of the present application;

[0027] Figure 2 is a structural schematic diagram of another embodiment of the air conditioning system adopted by the embodiment of the present application;

[0028] Figure 3 is a flow schematic diagram of one embodiment of the detection method adopted by the embodiment of the present application;

[0029] Figure 4 is a flow schematic diagram of another embodiment of the detection method adopted by the embodiment of the present application.

[0030] Among them, the above drawings include the following reference signs:

[0031] 1, indoor unit; 11, air valve; 2, outdoor unit; 201, host; 3, heat exchange pipeline; 31, first heat exchange pipeline; 32, second heat exchange pipeline; 33, third heat exchange pipeline; 4, refrigerant leakage sensor; 41, first sensor; 42, second sensor; 43, third sensor; 44, fourth sensor; 5, air supply structure; 51, first fan part; 52, second fan part; 53, third fan part; 54, fourth fan part;

[0032] 10, heat exchange space; 101, room; 102, corridor; 103, basement; 104, floor. DETAILED DESCRIPTION

[0033] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0034] With reference to Figures 1 to 4 , according to the embodiment of the present application, an air conditioning system is provided, comprising: a heat exchange pipeline 3 arranged in a heat exchange space 10; the heat exchange pipeline 3 is used for conveying refrigerant; a refrigerant leakage sensor 4 arranged in the heat exchange space 10; an air supply structure 5 arranged in the heat exchange space 10; the air supply structure 5 is used for blowing air in the heat exchange space 10 to the refrigerant leakage sensor 4; a control module for controlling the opening and closing of the air supply structure 5.

[0035] With the above arrangement, the air supply structure 5 is arranged in the heat exchange space 10, and the leaked refrigerant is blown to the refrigerant leakage sensor 4 through the air supply structure 5. The refrigerant leakage sensor 4 judges whether there is leakage through the concentration of refrigerant in the air. The control module controls the air supply structure 5 to open at irregular intervals, thereby ensuring the safe operation of the air conditioning system, and solving the problem that the refrigerant leakage sensor cannot detect whether there is refrigerant leakage in the external environment of the indoor unit when the indoor unit stops or the indoor unit fan fails.

[0036] In the air conditioning system of the embodiment, the heat exchange space 10 comprises: an indoor unit 1; a room 101, the indoor unit 1 is arranged in the room 101, the refrigerant leakage sensor 4 comprises a first sensor 41 arranged inside the indoor unit 1, and the air supply structure 5 comprises a first fan component 51 arranged at the air inlet of the indoor unit 1.

[0037] For ease of description, Figure 1 The heat exchange pipeline 3 has two welding points, one is a welding point A at the top of the room 101, and the other is a welding point B at the top of the corridor. In actual installation process, the welding point of the heat exchange pipeline 3 can be at any position in the room. The figure is only an example.

[0038] For ease of description, with reference to Figure 1 The fan is drawn above the indoor unit 1. In actuality, it can also be embedded in the top shell of the indoor unit, that is, the fan can be inside or outside the indoor unit.

[0039] With reference to Figure 1 In the air conditioning system of the embodiment, a damper 11 is arranged on the indoor unit 1, and the damper 11 is used for controlling the opening and closing of the air inlet; the heat exchange pipeline 3 comprises a first heat exchange pipeline 31 arranged in the room 101.

[0040] Specifically, during normal operation of the indoor unit 1, the damper is kept closed to prevent air leakage, and the refrigerant leakage sensor 4 only detects whether there is refrigerant leakage in the air circulating inside the indoor unit 1.

[0041] With reference to Figure 1In the air conditioning system of the embodiment, the first fan component 51 is arranged above the air inlet; or the first fan component 51 is arranged on the indoor unit 1.

[0042] In this way, when the indoor unit 1 is turned on, the fan operation can suck the air at the top of the room around the indoor unit 1 into the indoor unit 1. If the external copper pipe leaks refrigerant, the refrigerant will float to the top of the room and be sucked into the indoor unit 1 by the fan which is turned on at this time. The internal refrigerant leakage sensor can detect whether the refrigerant leaks.

[0043] Referring to Figure 1 In the air conditioning system of the embodiment, the heat exchange space 10 includes a corridor 102, the heat exchange pipeline 3 includes a second heat exchange pipeline 32 arranged in the corridor 102, the refrigerant leakage sensor 4 includes a second sensor 42 arranged at the top of the corridor 102, and the air supply structure 5 includes a second fan component 52 arranged in the corridor 102, which is used to blow air to the second sensor 42.

[0044] The refrigerant leakage sensor 4 of the current indoor unit 1 product in the market is installed in the indoor unit 1. The refrigerant leakage detection is only for the copper pipe inside the indoor unit 1. However, there is also a copper pipe on the wall (which is connected to the outdoor unit) in the room. The refrigerant leakage sensor 4 installed in the indoor unit 1 cannot detect whether the copper pipe on the wall leaks refrigerant due to wear and tear, breakage or welding point disengagement.

[0045] When the indoor unit 1 is turned on, the fan operation can suck the air at the top of the room around the indoor unit 1 into the indoor unit 1. If the external copper pipe leaks refrigerant, the refrigerant will float to the top of the room and be sucked into the indoor unit 1 by the fan which is turned on at this time. The internal refrigerant leakage sensor 4 can detect whether the refrigerant leaks.

[0046] If the indoor unit 1 is turned off or the fan fails, the fan does not operate. At this time, the refrigerant leakage sensor 4 installed in the indoor unit 1 cannot detect whether the copper pipe installed on the wall leaks refrigerant. At this time, the fan at the top of the indoor unit 1 can be turned on regularly to blow the air near the top of the indoor unit 1 to the refrigerant leakage sensor 4 for detection.

[0047] In the air conditioning system of the embodiment, referring to Figure 1 , the room 101 is multiple; the indoor unit 1 is multiple; and the multiple indoor units 1 are arranged in one-to-one correspondence with the multiple rooms 101. In this way, the scene of multiple rooms can be applied, and the normal operation of the air conditioning system is ensured.

[0048] In the air conditioning system of the embodiment, referring toFigure 2 The heat exchange space 10 comprises: a main machine 201; a basement 103, the main machine 201 is arranged in the basement 103, the refrigerant leakage sensor 4 comprises a third sensor 43 arranged in the basement 103, and the third sensor 43 is arranged at the top of the basement 103; and the air supply structure 5 comprises a third fan component 53 arranged in the basement 103.

[0049] Since the refrigerant system and the carrier fluid system are different, the application places are also different, and the air conditioning system with carrier fluid is generally applicable to the place with a basement. The above arrangement can meet the application of the air conditioning system with carrier fluid.

[0050] In the air conditioning system of the embodiment, referring to Figure 2 The heat exchange space 10 comprises: a main machine 201; a basement 103, the main machine 201 is arranged in the basement 103, the refrigerant leakage sensor 4 comprises a third sensor 43 arranged in the basement 103, and the third sensor 43 is arranged at the top of the basement 103; and the air supply structure 5 comprises a third fan component 53 arranged in the basement 103.

[0051] The above arrangement can detect the refrigerant leaked to the floor.

[0052] In the air conditioning system of the embodiment, referring to Figure 2 The floor 104 is multiple, and the multiple floors 104 are arranged in sequence along the vertical direction; the third sensor 43 and the fourth fan component 54 are arranged in the lowermost floor 104.

[0053] Since the refrigerant leakage generally only spreads to one floor, the third sensor 43 and the fourth fan component 54 are arranged in the lowermost floor, so that the accurate detection effect is achieved, and the cost is reduced.

[0054] In the air conditioning system of the embodiment, referring to Figure 2 The refrigerant leakage sensor 4 is multiple, and the multiple refrigerant leakage sensors 4 are arranged at intervals. In this way, the detection range of the refrigerant can be improved, and the normal operation of the air conditioning system is ensured.

[0055] Referring to Figure 3 , Figure 4The detection method of the embodiment is suitable for the air conditioning system, and comprises the following steps: a refrigerant leakage sensor 4 is arranged in a heat exchange space 10 provided with an air conditioner; air in the heat exchange space 10 is blown to the refrigerant leakage sensor 4 to detect whether refrigerant leaks; and the opening frequency of the air supply structure 5 is controlled according to the refrigerant state of the air conditioner, wherein the refrigerant state of the air conditioner comprises the type of refrigerant of the air conditioner and the filling amount of refrigerant of the air conditioner.

[0056] With the above arrangement, the opening frequency of the air supply structure 5 can be effectively regulated, so that the leakage condition can be detected in time while the cost is reduced.

[0057] Referring to Figure 3 When the refrigerant of the air conditioner is only refrigerant, the control module controls the opening frequency of the fan of the air supply structure according to the filling amount of the refrigerant of the air conditioner; the greater the filling amount of the refrigerant, the higher the opening frequency of the fan.

[0058] With the above arrangement, the fan on the top of the indoor unit 1 does not operate (because it is time-interval), and during the time interval, if the refrigerant leakage sensor 4 still alarms, it indicates that the alarm is not caused by the air outside the indoor unit 1, but the copper pipe inside the indoor unit 1 is broken, and the refrigerant leakage inside the indoor unit 1 causes the internal refrigerant concentration to rise, thereby triggering the alarm.

[0059] Referring to Figure 4 When the refrigerant of the air conditioner is refrigerant and carrier refrigerant, the control module controls the opening frequency of the fan of the air supply structure according to the danger degree of the refrigerant in the internal circulation of the air conditioner; the higher the danger degree, the greater the opening frequency of the fan; and the danger degree of the refrigerant comprises the flammability of the refrigerant and the toxicity of the refrigerant.

[0060] With the above arrangement, the opening frequency of the air supply structure 5 can be effectively regulated, so that the leakage condition can be detected in time while the cost is reduced.

[0061] In the detection method of the embodiment, referring to Figure 4 , the detection method comprises the following steps: a damper 11 is arranged at the air inlet of the indoor unit 1, the air outside the indoor unit 1 is sucked into the indoor unit 1 by the damper 11, and the refrigerant leakage sensor 4 arranged inside the indoor unit 1 is used to detect whether the refrigerant in the heat exchange pipeline 3 in the heat exchange space 10 where the indoor unit 1 is located leaks.

[0062] With the above arrangement, the refrigerant leakage sensor 4 inside the indoor unit 1 can be used to detect the refrigerant leakage condition of the space where the indoor unit 1 is located, and the cost is reduced.

[0063] In the detection method of the embodiment, the detection method comprises: arranging the refrigerant leakage sensor 4 and the air supply structure 5 at the upper part of the heat exchange space 10 without the indoor unit 1, so as to detect whether the refrigerant in the heat exchange pipeline 3 in the heat exchange space 10 leaks. In this way, the refrigerant leakage of the heat exchange pipeline 3 at each position can be detected.

[0064] Embodiment one:

[0065] When the indoor unit 1 is closed or the fan fails to operate, the refrigerant leakage detection of the indoor space is performed in the following mode one:

[0066] Table 1: Mode one

[0067]

[0068] Before the fan is started, the air valve 11 at the top of the indoor unit 1 is opened by default.

[0069] In the Figure 1 , the heat exchange pipeline 3 has a welding point A and a welding point B, the welding point A is in the room, and the welding point B is in the corridor.

[0070] For the welding point A, when the indoor unit 1 is closed or the fan fails to operate, the refrigerant leakage detection of the welding point A can be performed according to the above method 1. During the execution of the method 1, that is, when the fan is not started, if the refrigerant leakage sensor 4 alarms at this time, it indicates that there is refrigerant leakage in the indoor unit 1, regardless of the situation. Once the refrigerant leakage is detected, the same protection control of the system is performed.

[0071] When the indoor unit 1 is started, the refrigerant leakage sensor 4 only detects whether the air circulating in the indoor unit 1 has refrigerant leakage, and the air valve at the top of the indoor unit 1 is closed.

[0072] For the welding point B, since the indoor unit 1 is not installed in the corridor, the indoor unit 1 is always closed or the fan fails by default, and the refrigerant leakage detection is always performed according to the above method 1.

[0073] Embodiment two:

[0074] For the air conditioning system using a cold carrier, the installation mode of part of the air conditioning system is as shown in Figure 2 .

[0075] In the Figure 2In the embodiment, the indoor space is cooled by the cold carrier, the main machine of the air conditioning system is installed in the basement 103, the heat exchange between the refrigerant and the cold carrier is completed in the basement 103, the refrigerant only completes the refrigerant circulation in the main machine of the basement 103, if the refrigerant leaks from the main machine at this time, the refrigerant will gradually gather on the top of the basement 103, and even can float to the top of the first floor, for this case, the refrigerant detection can be performed in the following mode two:

[0076] Table 2: Mode two

[0077]

[0078] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and in the above description are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product or device.

[0079] Alternatively, the specific examples in the embodiments can refer to the examples described in the above embodiments, and the embodiments will not be described here.

[0080] The above sequence numbers of the embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0081] In the above embodiments of the present application, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0082] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, which should be considered as the protection scope of the present application.

Claims

1. An air conditioning system, characterized by, The air conditioning system comprises: a heat exchange pipeline (3) arranged in a heat exchange space (10); the heat exchange pipeline (3) is used for conveying refrigerant; a refrigerant leakage sensor (4) arranged in the heat exchange space (10); an air supply structure (5) arranged in the heat exchange space (10); the air supply structure (5) is used for blowing air in the heat exchange space (10) to the refrigerant leakage sensor (4); a control module used for controlling the opening and closing of the air supply structure (5); the air conditioning system controls the opening frequency of the air supply structure (5) according to the refrigerant state of the air conditioner; wherein the refrigerant state of the air conditioner comprises the type of refrigerant of the air conditioner and the refrigerant filling amount of the air conditioner.

2. The air conditioning system of claim 1, wherein, The heat exchange space (10) comprises: an indoor unit (1); a room (101), the indoor unit (1) is arranged in the room (101), the refrigerant leakage sensor (4) comprises a first sensor (41) arranged inside the indoor unit (1), and the air supply structure (5) comprises a first fan component (51) arranged at an air inlet of the indoor unit (1).

3. The air conditioning system of claim 2, wherein, A wind valve (11) is arranged on the indoor unit (1), and the wind valve (11) is used for controlling the opening and closing of the air inlet; the heat exchange pipeline (3) comprises a first heat exchange pipeline (31) arranged in the room (101).

4. The air conditioning system of claim 3, wherein, The first fan component (51) is arranged above the air inlet; or the first fan component (51) is arranged on the indoor unit (1).

5. The air conditioning system of claim 2, wherein, The heat exchange space (10) comprises: a corridor (102), the heat exchange pipeline (3) comprises a second heat exchange pipeline (32) arranged in the corridor (102); the refrigerant leakage sensor (4) comprises a second sensor (42) arranged at the top of the corridor (102); and the air supply structure (5) comprises a second fan component (52) arranged in the corridor (102), and the second fan component (52) is used for blowing air to the second sensor (42).

6. The air conditioning system according to claim 2, wherein the room (101) is multiple; the indoor unit (1) is multiple; and the multiple indoor units (1) are arranged in one-to-one correspondence with the multiple rooms (101).

7. The air conditioning system of claim 1, wherein, The heat exchange space (10) comprises: a main unit (201); a basement (103), the main unit (201) is arranged in the basement (103), the refrigerant leakage sensor (4) comprises a third sensor (43) arranged in the basement (103), the third sensor (43) is arranged at the top of the basement (103); and the air supply structure (5) comprises a third fan component (53) arranged in the basement (103).

8. The air conditioning system of claim 7, wherein, The heat exchange space (10) comprises: The floor (104) is located above the basement (103); the heat exchange pipeline (3) comprises a third heat exchange pipeline (33) arranged in the floor (104), and the third heat exchange pipeline (33) is connected with the main machine (201) of the basement (103); the refrigerant leakage sensor (4) comprises a fourth sensor (44) arranged in the floor (104), and the fourth sensor (44) is arranged at the top of the floor (104); and the air supply structure (5) comprises a fourth fan component (54) arranged in the floor (104).

9. The air conditioning system of claim 8, wherein, The floor (104) is located above the basement (103); the heat exchange pipeline (3) comprises a third heat exchange pipeline (33) arranged in the floor (104), and the third heat exchange pipeline (33) is connected with the main machine (201) of the basement (103); the refrigerant leakage sensor (4) comprises a fourth sensor (44) arranged in the floor (104), and the fourth sensor (44) is arranged at the top of the floor (104); and the air supply structure (5) comprises a fourth fan component (54) arranged in the floor (104).

10. The air conditioning system of claim 1, wherein, The floor (104) is located above the basement (103); the heat exchange pipeline (3) comprises a third heat exchange pipeline (33) arranged in the floor (104), and the third heat exchange pipeline (33) is connected with the main machine (201) of the basement (103); the refrigerant leakage sensor (4) comprises a fourth sensor (44) arranged in the floor (104), and the fourth sensor (44) is arranged at the top of the floor (104); and the air supply structure (5) comprises a fourth fan component (54) arranged in the floor (104).

11. A detection method suitable for use in the air conditioning system of any one of claims 1 to 10, characterized by, The detection method comprises: The refrigerant leakage sensor (4) is arranged in the heat exchange space (10) provided with the air conditioner; Air in the heat exchange space (10) is blown to the refrigerant leakage sensor (4) to detect whether the refrigerant leaks.

12. The detection method according to claim 11, characterized in that, When the refrigerant of the air conditioner only adopts a refrigerant for refrigeration, the control module controls the opening frequency of the fan of the air supply structure according to the filling amount of the refrigerant of the air conditioner; wherein the greater the filling amount of the refrigerant, the higher the opening frequency of the fan.

13. The method of claim 11, wherein, When the refrigerant of the air conditioner adopts a refrigerant and a cold carrier, the control module controls the opening frequency of the fan of the air supply structure according to the danger degree of the refrigerant in the internal circulation of the air conditioner; wherein the higher the danger degree, the greater the opening frequency of the fan; and the danger degree of the refrigerant comprises the flammability of the refrigerant and the toxicity of the refrigerant.

14. The method of claim 11, wherein, The detection method comprises: The air valve (11) is arranged at the air inlet of the indoor unit (1), air outside the indoor unit (1) is sucked into the indoor unit (1) by the air valve (11), and the refrigerant leakage sensor (4) arranged inside the indoor unit (1) is used to detect whether the refrigerant in the heat exchange pipeline (3) in the heat exchange space (10) where the indoor unit (1) is located leaks.

15. The detection method of claim 14, wherein, The detection method comprises: The refrigerant leakage sensor (4) and the air supply structure (5) are arranged in the upper part of the heat exchange space (10) without the indoor unit (1) to detect whether the refrigerant in the heat exchange pipeline (3) in the heat exchange space (10) leaks.

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