Air conditioning system

Abstract

The utility model provides an air-conditioning system, which comprises a heat exchange pipeline, a heat exchanger, a heat exchanger and a heat exchanger, the heat exchange pipeline is used for conveying a refrigerant; the refrigerant leakage sensor is arranged in the heat exchange space; the air supply structure is 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; the air conditioning system solves the problem that when the indoor unit is shut down or a draught fan of the indoor unit breaks down, the refrigerant leakage sensor cannot detect whether refrigerant leakage exists in the external environment of the indoor unit or not.

Description

Technical Field

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

[0002] When existing air conditioning systems use flammable and toxic refrigerants such as R32, refrigerant leak sensors are typically installed inside the indoor unit to detect refrigerant leaks and protect user safety. The detection method involves the sensor triggering an alarm when the refrigerant concentration inside the indoor unit reaches a certain level, thus activating the corresponding protective measures in the air conditioning system. However, this method has a drawback: it only detects leaks inside the indoor unit. When the indoor unit is turned off or the fan malfunctions, the lack of air circulation prevents the detection of refrigerant leaks in the external environment, significantly reducing the accuracy of the refrigerant leak sensor.

[0003] For large air conditioning systems such as modular multi-split units, the connecting pipes used can be hundreds of meters long. Most of these pipes are located indoors, and they are connected by welding. Prolonged use of these welded joints can lead to refrigerant leaks. If the leaking welded joint is not inside the room, the refrigerant leak sensor installed inside the indoor unit will not detect it. If the leaking welded joint is inside the room, the refrigerant leak sensor will also not detect the leak when the indoor unit is turned off or the indoor fan malfunctions. Both situations pose significant safety hazards.

[0004] Some central air conditioning systems that use chilled water or other refrigerants for cooling have their main units installed in the basement, such as the central air conditioning systems used in some libraries. Because the indoor space is cooled by chilled water, there are no refrigerant leak sensors installed on the indoor side. If the refrigerant leaks from the main unit installed in the basement, the refrigerant will gradually drift into the ground space. When the concentration accumulates to a certain level, it poses a fire hazard, which is extremely dangerous.

[0005] Therefore, existing technologies have the problem that refrigerant leakage sensors cannot detect whether there is refrigerant leakage in the external environment of the indoor unit when the indoor unit is shut down or the indoor unit fan fails. Utility Model Content

[0006] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide an air conditioning system to solve the problem in the related technology 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.

[0007] To achieve the above technical objectives, the present invention adopts the following technical solution: providing an air conditioning system, comprising: a heat exchange pipeline; the heat exchange pipeline being used to transport refrigerant; a refrigerant leakage sensor, the refrigerant leakage sensor being disposed within the heat exchange space; an air supply structure, disposed within the heat exchange space; the air supply structure being used to blow air from the heat exchange space to the refrigerant leakage sensor; and a control module, the control module being used to control the opening and closing of the air supply structure.

[0008] Furthermore, the heat exchange space includes: an indoor unit; a room, the indoor unit being installed in the room, the refrigerant leakage sensor including a first sensor installed inside the indoor unit, and the air supply structure including a first fan component installed at the air inlet of the indoor unit.

[0009] Furthermore, the indoor unit is equipped with an air valve, which is used to control the opening and closing of the air inlet; the heat exchange pipeline includes a first heat exchange pipeline installed in the room.

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

[0011] Furthermore, the heat exchange space includes: a corridor; the heat exchange pipeline includes a second heat exchange pipeline disposed within the corridor; the refrigerant leakage sensor includes a second sensor disposed at the top of the corridor; the air supply structure includes a second fan component disposed within the corridor, the second fan component being used to blow air to the second sensor.

[0012] Furthermore, there are multiple rooms; there are multiple indoor units; and the multiple indoor units are set up in a one-to-one correspondence with the multiple rooms.

[0013] Furthermore, the heat exchange space includes: a basement, a main unit; the main unit is installed in the basement, the refrigerant leakage sensor includes a third sensor installed in the basement, the third sensor is installed on the top of the basement; the air supply structure includes a third fan component installed in the basement.

[0014] Furthermore, the heat exchange space includes: a floor, located above the basement; the heat exchange pipeline includes a third heat exchange pipeline installed within the floor, the third heat exchange pipeline being connected to the main unit in the basement; the refrigerant leakage sensor includes a fourth sensor installed on the floor, the fourth sensor being installed at the top of the floor; the air supply structure includes a fourth fan component installed on the floor.

[0015] Furthermore, there are multiple floors, which are arranged sequentially in a vertical direction; the third sensor and the fourth fan component are located in the lowest floor.

[0016] Furthermore, there are multiple refrigerant leak sensors, which are arranged at intervals.

[0017] Beneficial effects:

[0018] 1. When the indoor unit of this utility model is turned off or the indoor fan fails, the air conditioning system periodically blows the air from the top of the room to the refrigerant leak sensor through the fan on the top of the indoor unit casing, thereby improving the accuracy of refrigerant leak detection.

[0019] 2. When a leak occurs at the welding point of the air conditioning connection pipe in the air conditioning system of this utility model, a refrigerant leak sensor is added above the indoor space through which the connection pipe passes. The fan is turned on periodically to blow the air from the top of the room to the refrigerant leak sensor, thereby realizing the detection of refrigerant leak and avoiding the safety risks caused by refrigerant leaks from the connection pipe.

[0020] 3. The air conditioning system of this utility model adds a refrigerant leak sensor to the top of the basement or the top of the first floor of a high-rise building. The fan is turned on regularly to blow air to the refrigerant leak sensor to realize refrigerant leak detection and avoid the safety risks caused by refrigerant leaks from the basement air conditioning unit accumulating at the top. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the air conditioning system used in this utility model;

[0022] Figure 2 This is a schematic diagram of another embodiment of the air conditioning system used in this utility model;

[0023] Figure 3 This is a schematic diagram of the working process of an embodiment of the air conditioning system used in this utility model;

[0024] Figure 4 This is a schematic diagram of the workflow of another embodiment of the air conditioning system used in this utility model.

[0025] The above figures include the following reference numerals:

[0026] 1. Indoor unit; 11. Air valve; 2. Outdoor unit; 201. Main unit; 3. Heat exchange piping; 31. First heat exchange piping; 32. Second heat exchange piping; 33. Third heat exchange piping; 4. Refrigerant leak sensor; 41. First sensor; 42. Second sensor; 43. Third sensor; 44. Fourth sensor; 5. Air supply structure; 51. First fan assembly; 52. Second fan assembly; 53. Third fan assembly; 54. Fourth fan assembly;

[0027] 10. Heat exchange space; 101. Room; 102. Corridor; 103. Basement; 104. Floor. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0029] See Figures 1 to 4 According to an embodiment of the present invention, an air conditioning system is provided, comprising: a heat exchange pipeline 3 disposed within a heat exchange space 10; the heat exchange pipeline 3 being used to transport refrigerant; a refrigerant leakage sensor 4 disposed within the heat exchange space 10; an air supply structure 5 disposed within the heat exchange space 10; the air supply structure 5 being used to blow air from the heat exchange space 10 to the refrigerant leakage sensor 4; and a control module being used to control the opening and closing of the air supply structure 5.

[0030] With the above setup, an air supply structure 5 is installed in the heat exchange space 10. The leaked refrigerant is blown to the refrigerant leak sensor 4 through the air supply structure 5. The refrigerant leak sensor 4 determines whether there is a leak by the concentration of refrigerant in the air. The control module controls the air supply structure 5 to open periodically, thereby ensuring the safe operation of the air conditioning system and solving the problem that the refrigerant leak sensor cannot detect whether there is a refrigerant leak in the external environment of the indoor unit when the indoor unit is stopped or the indoor unit fan fails.

[0031] In the air conditioning system of this embodiment, the heat exchange space 10 includes: an indoor unit 1; a room 101, the indoor unit 1 is disposed in the room 101, the refrigerant leakage sensor 4 includes a first sensor 41 disposed inside the indoor unit 1, and the air supply structure 5 includes a first fan component 51 disposed at the air inlet of the indoor unit 1.

[0032] For ease of description, Figure 1There are two welding points for heat exchange pipe 3: one is welding point A at the top of room 101, and the other is welding point B at the top of the corridor. In actual installation, the welding point of heat exchange pipe 3 may be located anywhere in the room. The illustration is only an example.

[0033] For ease of description, see Figure 1 The fan is shown above indoor unit 1, but it may actually be embedded in the top casing of the indoor unit. In other words, the fan can be on the indoor unit or added separately outside the indoor unit.

[0034] See Figure 1 In the air conditioning system of this embodiment, the indoor unit 1 is provided with an air valve 11, which is used to control the opening and closing of the air inlet; the heat exchange pipeline 3 includes a first heat exchange pipeline 31 provided in the room 101.

[0035] Specifically, during normal operation of indoor unit 1, the illustrated air valve remains closed to prevent air leakage, and refrigerant leakage sensor 4 detects whether there is refrigerant leakage in the air circulating inside indoor unit 1.

[0036] See Figure 1 In the air conditioning system of this embodiment, the first fan component 51 is disposed above the air inlet; or, the first fan component 51 is disposed on the indoor unit 1.

[0037] In this way, when indoor unit 1 is turned on, the fan can draw the air from the ceiling of the room around indoor unit 1 into indoor unit 1. If the external copper pipe leaks refrigerant, the refrigerant will drift to the ceiling of the room and be drawn into indoor unit 1 by the fan that is turned on at this time. The internal refrigerant leak sensor will detect whether there is a refrigerant leak.

[0038] See Figure 1 In the air conditioning system of this embodiment, the heat exchange space 10 includes: a corridor 102; the heat exchange pipe 3 includes a second heat exchange pipe 32 disposed in the corridor 102; the refrigerant leakage sensor 4 includes a second sensor 42 disposed at the top of the corridor 102; the air supply structure 5 includes a second fan component 52 disposed in the corridor 102, the second fan component 52 being used to blow air to the second sensor 42.

[0039] In current air conditioner indoor unit 1 products on the market, the refrigerant leak sensor 4 is installed inside the indoor unit 1. The detection of refrigerant leaks only checks whether the copper pipes inside the indoor unit 1 are broken and leaking refrigerant. However, there are not only copper pipes inside the indoor unit 1, but also a section of copper pipe on the wall (which connects to the outdoor unit). The refrigerant leak sensor 4 installed inside the indoor unit 1 cannot detect whether the copper pipe on the external wall is worn, broken, or has a detached weld, which could lead to refrigerant leaks.

[0040] When indoor unit 1 is turned on, the fan can draw air from the ceiling of the room around indoor unit 1 into indoor unit 1. If the external copper pipe leaks refrigerant, the refrigerant will drift to the ceiling of the room and be drawn into indoor unit 1 by the fan that is turned on at this time. The internal refrigerant leak sensor 4 will detect whether there is a refrigerant leak.

[0041] If indoor unit 1 is turned off or the fan malfunctions and does not operate, the refrigerant leak sensor 4 installed inside indoor unit 1 will not be able to detect whether there is a refrigerant leak in the section of copper pipe installed on the wall. In this case, the fan on top of indoor unit 1 can be turned on periodically to blow the air near the top of indoor unit 1 onto the refrigerant leak sensor 4 for detection.

[0042] In the air conditioning system of this embodiment, see Figure 1 There are multiple rooms 101; there are multiple indoor units 1; and each of the multiple indoor units 1 is arranged in a one-to-one correspondence with one of the multiple rooms 101. In this way, it can be applied to scenarios with multiple rooms, ensuring the normal operation of the air conditioning system.

[0043] In the air conditioning system of this embodiment, see Figure 2 The heat exchange space 10 includes: a main unit 201; a basement 103, wherein the main unit 201 is disposed in the basement 103, the refrigerant leakage sensor 4 includes a third sensor 43 disposed in the basement 103, the third sensor 43 being disposed at the top of the basement 103; and the air supply structure 5 includes a third fan component 53 disposed in the basement 103.

[0044] Since refrigerant systems and refrigerant-based air conditioning systems are different and applied in different locations, refrigerant-based air conditioning systems are generally suitable for locations with basements. The above setup can meet the application requirements of refrigerant-based air conditioning systems.

[0045] In the air conditioning system of this embodiment, see Figure 2 The heat exchange space 10 includes: a floor 104, located above the basement 103; the heat exchange pipeline 3 includes a third heat exchange pipeline 33 installed in the floor 104, the third heat exchange pipeline 33 being connected to the main unit 201 of the basement 103; the refrigerant leakage sensor 4 includes a fourth sensor 44 installed in the floor 104, the fourth sensor 44 being installed at the top of the floor 104; the air supply structure 5 includes a fourth fan component 54 installed in the floor 104.

[0046] Using the above setup, refrigerant leaks onto the floor can be detected.

[0047] In the air conditioning system of this embodiment, see Figure 2 There are multiple floors 104, and the multiple floors 104 are arranged sequentially in the vertical direction; the third sensor 43 and the fourth fan component 54 are located in the lowest floor 104.

[0048] Since refrigerant leaks typically only spread to one floor, placing the third sensor 43 and the fourth fan component 54 on the lowest floor allows for accurate detection, thereby reducing costs.

[0049] Example 1:

[0050] When indoor unit 1 is turned off or the fan is malfunctioning and cannot operate, perform refrigerant leak detection in the indoor space as follows:

[0051] Table 1: Method 1

[0052]

[0053] Before the fan is turned on, the air valve 11 on the top of the indoor unit 1 will be opened by default.

[0054] exist Figure 1 In the heat exchange pipeline 3, there are welding points A and B. Welding point A is in the room and welding point B is in the corridor.

[0055] For welding point A, since there is indoor unit 1 in the room, when indoor unit 1 is turned off or the fan is malfunctioning and cannot operate, the refrigerant leak detection for welding point A can be performed in accordance with method 1 above. During the execution of method 1, i.e. when the fan is not turned on, if the refrigerant leak sensor 4 alarms, it indicates that there is a refrigerant leak inside indoor unit 1. In either case, once a refrigerant leak is detected, the same protection control of the system will be executed.

[0056] When indoor unit 1 is turned on, refrigerant leak sensor 4 detects whether there is a refrigerant leak in the air circulating inside indoor unit 1, and the air valve on the top of indoor unit 1 is closed.

[0057] For welding point B, since indoor unit 1 is not installed in the corridor, it is assumed that indoor unit 1 is always off or the fan is faulty, and the refrigerant leak detection is always performed in accordance with the above method 1.

[0058] Example 2:

[0059] For air conditioning systems using refrigerant, the installation methods of some air conditioning systems are as follows: Figure 2 As shown.

[0060] exist Figure 2In this system, the indoor space uses a refrigerant-based cooling system. The main unit of the air conditioning system is installed in basement 103. Heat exchange between the refrigerant and the refrigerant-based cooling system is completed in basement 103. The refrigerant circulates only within the main unit in basement 103. If a refrigerant leak occurs in the main unit, the refrigerant will gradually accumulate at the top of basement 103, and may even drift to the top of the first floor. In this situation, refrigerant testing can be performed using the following method (method two):

[0061] Table 2: Method Two

[0062]

[0063] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0064] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0065] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0066] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0067] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An air conditioning system, characterized in that, include: A heat exchange pipeline (3) is installed in the heat exchange space (10); the heat exchange pipeline (3) is used to transport refrigerant; A refrigerant leak sensor (4) is disposed within the heat exchange space (10); An air supply structure (5) is provided in the heat exchange space (10); the air supply structure (5) is used to blow the air in the heat exchange space (10) to the refrigerant leakage sensor (4); The control module is used to control the opening and closing of the air supply structure (5).

2. The air conditioning system according to claim 1, characterized in that, The heat exchange space (10) includes: Indoor unit (1); The room (101) is equipped with an indoor unit (1). The refrigerant leakage sensor (4) includes a first sensor (41) installed inside the indoor unit (1). The air supply structure (5) includes a first fan component (51) installed at the air inlet of the indoor unit (1).

3. The air conditioning system according to claim 2, characterized in that, The indoor unit (1) is provided with an air valve (11), which is used to control the opening and closing of the air inlet; the heat exchange pipeline (3) includes a first heat exchange pipeline (31) installed in the room (101).

4. The air conditioning system according to claim 3, characterized in that, The first fan component (51) is disposed above the air inlet; or, the first fan component (51) is disposed on the indoor unit (1).

5. The air conditioning system according to claim 2, characterized in that, The heat exchange space (10) includes: The corridor (102) includes a second heat exchange pipe (32) installed in the corridor (102); the refrigerant leakage sensor (4) includes a second sensor (42) installed at the top of the corridor (102); the air supply structure (5) includes a second fan component (52) installed in the corridor (102), the second fan component (52) being used to blow air to the second sensor (42).

6. The air conditioning system according to claim 2, characterized in that, There are multiple rooms (101); there are multiple indoor units (1); the multiple indoor units (1) are set up one-to-one with the multiple rooms (101).

7. The air conditioning system according to claim 1, characterized in that, The heat exchange space (10) includes: Host (201); The basement (103) is equipped with the main unit (201) and the refrigerant leakage sensor (4) includes a third sensor (43) installed in the basement (103) and the third sensor (43) is installed on the top of the basement (103); the air supply structure (5) includes a third fan component (53) installed in the basement (103).

8. The air conditioning system according to claim 7, characterized in that, The heat exchange space (10) includes: Floor (104) is located above the basement (103); the heat exchange pipeline (3) includes a third heat exchange pipeline (33) installed in the floor (104), the third heat exchange pipeline (33) being connected to the main unit (201) of the basement (103); the refrigerant leakage sensor (4) includes a fourth sensor (44) installed in the floor (104), the fourth sensor (44) being installed at the top of the floor (104); the air supply structure (5) includes a fourth fan component (54) installed in the floor (104).

9. The air conditioning system according to claim 8, characterized in that, There are multiple floors (104), and the multiple floors (104) are arranged sequentially in the vertical direction; the third sensor (43) and the fourth fan component (54) are located in the lowest floor (104).

10. The air conditioning system according to claim 1, characterized in that, There are multiple refrigerant leakage sensors (4), and the multiple refrigerant leakage sensors (4) are arranged at intervals.

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