Central air conditioner maintenance device

Abstract

The utility model discloses a central air conditioner maintenance device which comprises a bearing platform, the top end of the bearing platform is rotationally connected with a rotating disc, an air channel is transversely formed in the middle of the bearing platform, a fan is installed at one end of the air channel, a filter cartridge is installed at the other end of the air channel, and the filter cartridge and the fan are detachably connected with the bearing platform. A suction pipe is installed at the end, facing the outer side, of the filter cartridge, and a dust suction connector is connected to the top end of the suction pipe. And a turntable is arranged at the top of the bearing platform and can conveniently bear an air conditioner outdoor unit or an air conditioner indoor unit, so that the air conditioner outdoor unit or the air conditioner indoor unit is conveniently driven to rotate, and workers can conveniently rotate the air conditioner outdoor unit or the air conditioner indoor unit according to maintenance requirements. Meanwhile, a fan is arranged at the bottom of the bearing platform, a filter cartridge is arranged at the air suction end of the gap and connected with a suction pipe, dust on the surface of an air conditioner external connection or an indoor unit can be rapidly adsorbed into the filter cartridge through cooperation of the suction pipe and the fan, and therefore maintenance personnel can be conveniently assisted in rapidly cleaning the indoor unit or the external connection of the air conditioner.

Description

Technical Field

[0001] The utility model relates to the technical field of central air-conditioning maintenance, in particular to a central air-conditioning maintenance device. Background Art

[0002] The outdoor unit of the central air conditioner is mostly installed on the outside of the building. Therefore, it is inconvenient to repair the central air conditioner after a failure. The outdoor unit of the central air conditioner needs to be disassembled for repair, and a supporting structure will be used to support the outdoor unit of the central air conditioner for the convenience of repair.

[0003] The patent with Chinese patent authorization announcement number CN220524227U discloses a central air-conditioning maintenance device, including a base; a protective shell arranged on the upper part of the base; a moving group arranged at the bottom of the base; and a processing component arranged on the upper part of the base, the processing component including a filter clamping part, a telescopic rod group, a filter cleaning part, a repair part, and a pushing part, the filter clamping part is arranged at the front part of the top end of the base, the telescopic rod group is installed at the top end of the base, the filter cleaning part and the repair part are installed on the top of the telescopic rod group, the pushing part is installed on the base, the filter clamping part and the filter cleaning part are installed inside the protective shell, the filter is clamped by the filter clamping part, and the height of the filter is adjusted to achieve the effect of adapting to different filters, and the dust on the filter is automatically brushed up and down by the filter cleaning part with a cleaning brush wheel, and when not in use, the third sliding block will take the cleaning brush wheel away from the filter.

[0004] Although the central air conditioning maintenance device provided by the above patent can drive the air conditioner to lift up, it cannot assist the air conditioner to rotate. When the staff repairs the air conditioner, they need to walk around the air conditioner, which is troublesome. In addition, the existing maintenance device is not convenient for absorbing the dust on the air conditioner filter and inside the air conditioner to achieve the purpose of quickly cleaning the dust of the air conditioner. Utility Model Content

[0005] The utility model aims to provide a central air-conditioning maintenance device, aiming to improve the problem that the existing central air-conditioning maintenance device cannot assist the air-conditioning to rotate, and the staff needs to walk around the air-conditioning when repairing the air-conditioning outdoor unit, which makes the maintenance more troublesome, and the existing central air-conditioning maintenance device is not convenient for sucking the dust from the air-conditioning filter and the inside of the air-conditioning.

[0006] The utility model is achieved in this way:

[0007] A central air conditioning maintenance device comprises a base, the top of the base is rotatably connected to a turntable, and an air duct is horizontally arranged in the middle of the base, a fan is installed at one end of the air duct, a filter cartridge is installed at the other end of the air duct, the filter cartridge and the fan are detachably connected to the base, a suction pipe is installed at the outward end of the filter cartridge, and a dust suction connector is connected to the top of the suction pipe.

[0008] Preferably, a bearing is provided in the middle of the top of the support platform, the bearing is rotatably connected to the support platform, and supporting feet are provided at the corners of the bottom surface of the support platform.

[0009] Preferably, an adapter is provided at one end of the filter cartridge facing outward, a pressure plate is provided at one end of the adapter facing outward, the edge of the pressure plate is pressed tightly against the side of the base, an ash inlet hole is provided in the middle of the pressure plate, and the ash inlet hole is threadedly connected to the suction tube.

[0010] Preferably, a connecting cover is provided at the bottom end of the suction pipe, an adapter ring is provided on the side of the connecting cover facing the base, the adapter ring is threadedly connected to the air duct, and the dust suction connector at the top end of the suction pipe is open at one end and has a handle at the other end.

[0011] Preferably, a mounting platform is provided at the bottom end of the turntable, a mounting shaft is provided in the middle of the mounting platform, and the mounting shaft is interference connected with the bearing.

[0012] Preferably, a mounting joint is provided at one end of the fan facing outward, a limiting ring is provided at one end of the mounting joint facing outward, the mounting joint is threadedly connected to the air duct, and the limiting ring is pressed tightly against the side of the base.

[0013] Preferably, a thread groove is provided on one side of the support platform, the thread groove is threadedly connected with a buckle, and a connecting column is provided at one end of the buckle facing the support platform, a stud is provided at the end of the connecting column, and the stud is threadedly connected to the thread groove.

[0014] Preferably, an inclined support plate is provided at the top of the side surface of the support platform, a threaded hole is provided in the middle of the inclined support plate, a positioning screw is threadedly connected to the threaded hole, and a rotating handle is provided at the bottom end of the positioning screw.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model has a turntable on the top of the support platform, which is convenient for supporting the outdoor unit or the indoor unit of the air conditioner, so as to drive the outdoor unit or the indoor unit of the air conditioner to rotate, and it is convenient for the staff to rotate the outdoor unit or the indoor unit of the air conditioner according to the maintenance needs. At the same time, a fan is provided at the bottom of the support platform, and a filter cartridge is provided at the air suction end of the gap. The filter cartridge is connected with a suction pipe. Through the suction pipe and the fan, the dust on the surface of the external or internal unit of the air conditioner can be quickly adsorbed into the inside of the filter cartridge, so as to facilitate the auxiliary maintenance personnel to quickly clean the internal or external unit of the air conditioner.

[0017] 2. An inclined support plate and a positioning screw are provided on the top of one side of the support platform of the utility model. The positioning screw can be pressed against the turntable through the cooperation of the inclined support plate and the positioning screw, so as to facilitate fixing the turning angle of the turntable.

[0018] 3. The side of the support platform of the utility model is provided with a buckle, through which the straw can be supported to ensure that the straw is stable on the side of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model as a whole at the front oblique downward angle;

[0020] Figure 2 It is a schematic diagram of the structure of the utility model as a whole at the rear end oblique downward angle;

[0021] Figure 3 It is a structural schematic diagram of the foundation of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the filter cartridge of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the straw of the utility model;

[0024] Figure 6 It is a structural schematic diagram of the turntable of the utility model;

[0025] Figure 7 It is a structural schematic diagram of the positioning screw of the utility model;

[0026] Figure 8 It is a structural schematic diagram of the buckle of the utility model;

[0027] Fig. 9 It is a structural schematic diagram of the utility model fan.

[0028] In the figure: 1. Base; 11. Air duct; 12. Threaded groove; 13. Bearing; 14. Diagonal support plate; 15. Threaded hole; 16. Support foot; 2. Filter cartridge; 21. Adapter; 22. Pressure plate; 23. Ash inlet hole; 3. Suction tube; 31. Connecting cover; 32. Adapter ring; 33. Dust suction connector; 34. Handle; 4. Turntable; 41. Mounting table; 42. Mounting shaft; 5. Positioning screw; 51. Rotating handle; 6. Buckle; 61. Connecting column; 62. Stud; 7. Fan; 71. Mounting connector; 72. Limiting ring. DETAILED DESCRIPTION

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0031] Example 1

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a central air conditioner maintenance device includes a support platform 1, and a turntable 4 is rotatably connected to the top of the support platform 1. The support platform 1 cooperates with the turntable 4 to facilitate the support of the outdoor unit or the indoor unit of the air conditioner, so as to facilitate the maintenance of the air conditioner. A wind duct 11 is horizontally arranged in the middle of the support platform 1, and a fan 7 is installed at one end of the wind duct 11, and a filter cartridge 2 is installed at the other end of the wind duct 11. The wind duct 11 is used to install the fan 7 and the filter cartridge 2, so that the fan 7 drives the air flow to absorb dust, so that the dust is conveniently sucked into the filter cartridge 2 for filtering and processing, so as to achieve the purpose of dust collection for the air conditioner. The filter cartridge 2 and the fan 7 are detachably connected to the support platform 1. This structure is convenient for replacing the fan 7 and the filter cartridge 2. A suction pipe 3 is installed at the end of the filter cartridge 2 facing outward, and a dust suction joint 33 is connected to the top of the suction pipe 3. The suction pipe 3 cooperates with the dust suction joint 33 to facilitate the suction pipe 3 to absorb dust inside the air conditioner.

[0033] like Figure 3 As shown, a bearing 13 is provided at the middle of the top of the support 1, and the bearing 13 is rotatably connected to the support 1, and the bearing 13 is convenient for the support 1 to be rotatably connected to the machine body. Support feet 16 are provided at the corners of the bottom surface of the support 1, and the support feet 16 are convenient for supporting the support 1 to ensure that the support 1 is sufficiently stable.

[0034] like Figure 4 As shown, an adapter 21 is provided at one end of the filter cartridge 2 facing outward, and the adapter 21 is convenient for threading the filter cartridge 2 with the air duct 11. A pressing plate 22 is provided at one end of the adapter 21 facing outward, and the edge of the pressing plate 22 is pressed tightly against the side of the support 1. This structure ensures that the filter cartridge 2 is stably installed inside the air duct 11. An ash inlet hole 23 is provided in the middle of the pressing plate 22, and the ash inlet hole 23 is threadedly connected to the suction pipe 3, so that the dust sucked by the suction pipe 3 can enter the inner side of the filter cartridge 2.

[0035] like Figure 5 As shown, a connection cover 31 is provided at the bottom of the suction pipe 3, and an adapter ring 32 is provided on the side of the connection cover 31 facing the base 1. The adapter ring 32 is threadedly connected to the air duct 11. The connection cover 31 cooperates with the adapter ring 32 to facilitate connection with the ash inlet hole 23, so that the suction pipe 3 is conveniently connected to the inside of the filter cartridge 2. The dust suction connector 33 at the top of the suction pipe 3 is open at one end and a handle 34 is provided at the other end; the handle 34 is convenient for holding the dust suction connector 33, so that the dust suction connector 33 can absorb dust inside the outdoor unit or the indoor unit of the air conditioner.

[0036] like Figure 6 As shown, a mounting platform 41 is provided at the bottom of the turntable 4, and a mounting shaft 42 is provided in the middle of the mounting platform 41, and the mounting shaft 42 is interference-connected with the bearing 13; the mounting platform 41 cooperates with the mounting shaft 42 to facilitate the rotational connection between the turntable 4 and the bearing 13, thereby facilitating the rotation of the turntable 4.

[0037] like Fig. 9 As shown, a mounting joint 71 is provided at one end of the fan 7 facing outward, a limiting ring 72 is provided at one end of the mounting joint 71 facing outward, the mounting joint 71 is threadedly connected to the air duct 11, and the limiting ring 72 is pressed tightly against the side of the base 1; this structure ensures flexible disassembly, assembly and use between the fan 7 and the air duct 11.

[0038] Working principle: When in use, the central air conditioner indoor unit or outdoor unit that needs to be repaired is disassembled and placed on the support platform 1 according to the use requirements, and then the staff can use the dust suction pipe and the dust suction joint 33 to clean and absorb the dust on the surface and inside of the central air conditioner indoor unit or outdoor unit; then the staff can repair the outdoor unit or indoor unit of the central air conditioner. During the repair process, the turntable 4 can be rotated according to the maintenance requirements, so as to conveniently drive the outdoor unit to rotate to a suitable position, so as to facilitate the auxiliary staff to repair the air conditioner. Compared with the prior art, the top of the support platform 1 of the present application is provided with a turntable 4, which is convenient for supporting the outdoor unit or indoor unit of the air conditioner, so as to facilitate the rotation of the outdoor unit or indoor unit of the air conditioner, and facilitate the staff to rotate the outdoor unit or indoor unit of the air conditioner according to the maintenance requirements. At the same time, a fan 7 is provided at the bottom of the support platform 1, and a filter cartridge 2 is provided at the gap suction end, and the filter cartridge 2 is connected to a suction pipe 3. The suction pipe 3 cooperates with the fan 7 to quickly absorb the dust on the surface of the external or internal unit of the air conditioner into the inside of the filter cartridge 2, so as to facilitate the auxiliary maintenance personnel to quickly clean the indoor or external unit of the air conditioner.

[0039] Example 2

[0040] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, a central air conditioner maintenance device includes a support platform 1, and a turntable 4 is rotatably connected to the top of the support platform 1. The support platform 1 cooperates with the turntable 4 to facilitate the support of the outdoor unit or the indoor unit of the air conditioner, so as to facilitate the maintenance of the air conditioner. A wind duct 11 is horizontally arranged in the middle of the support platform 1, and a fan 7 is installed at one end of the wind duct 11, and a filter cartridge 2 is installed at the other end of the wind duct 11. The wind duct 11 is used to install the fan 7 and the filter cartridge 2, so that the fan 7 drives the air flow to absorb dust, so that the dust is conveniently sucked into the filter cartridge 2 for filtering and processing, so as to achieve the purpose of dust collection for the air conditioner. The filter cartridge 2 and the fan 7 are detachably connected to the support platform 1. This structure is convenient for replacing the fan 7 and the filter cartridge 2. A suction pipe 3 is installed at the end of the filter cartridge 2 facing outward, and a dust suction joint 33 is connected to the top of the suction pipe 3. The suction pipe 3 cooperates with the dust suction joint 33 to facilitate the suction pipe 3 to absorb dust inside the air conditioner.

[0041] like Figure 3 As shown, a bearing 13 is provided at the middle of the top of the support 1, and the bearing 13 is rotatably connected to the support 1, and the bearing 13 is convenient for the support 1 to be rotatably connected to the machine body. Support feet 16 are provided at the corners of the bottom surface of the support 1, and the support feet 16 are convenient for supporting the support 1 to ensure that the support 1 is sufficiently stable.

[0042] like Figure 4 As shown, an adapter 21 is provided at one end of the filter cartridge 2 facing outward, and the adapter 21 is convenient for threading the filter cartridge 2 with the air duct 11. A pressing plate 22 is provided at one end of the adapter 21 facing outward, and the edge of the pressing plate 22 is pressed tightly against the side of the support 1. This structure ensures that the filter cartridge 2 is stably installed inside the air duct 11. An ash inlet hole 23 is provided in the middle of the pressing plate 22, and the ash inlet hole 23 is threadedly connected to the suction pipe 3, so that the dust sucked by the suction pipe 3 can enter the inner side of the filter cartridge 2.

[0043] like Figure 5 As shown, a connection cover 31 is provided at the bottom of the suction pipe 3, and an adapter ring 32 is provided on the side of the connection cover 31 facing the base 1. The adapter ring 32 is threadedly connected to the air duct 11. The connection cover 31 cooperates with the adapter ring 32 to facilitate connection with the ash inlet hole 23, so that the suction pipe 3 is conveniently connected to the inside of the filter cartridge 2. The dust suction connector 33 at the top of the suction pipe 3 is open at one end and a handle 34 is provided at the other end; the handle 34 is convenient for holding the dust suction connector 33, so that the dust suction connector 33 can absorb dust inside the outdoor unit or the indoor unit of the air conditioner.

[0044] like Figure 6 As shown, a mounting platform 41 is provided at the bottom of the turntable 4, and a mounting shaft 42 is provided in the middle of the mounting platform 41, and the mounting shaft 42 is interference-connected with the bearing 13; the mounting platform 41 cooperates with the mounting shaft 42 to facilitate the rotational connection between the turntable 4 and the bearing 13, thereby facilitating the rotation of the turntable 4.

[0045] like Fig. 9As shown, a mounting joint 71 is provided at one end of the fan 7 facing outward, a limiting ring 72 is provided at one end of the mounting joint 71 facing outward, the mounting joint 71 is threadedly connected to the air duct 11, and the limiting ring 72 is pressed tightly against the side of the base 1; this structure ensures flexible disassembly, assembly and use between the fan 7 and the air duct 11.

[0046] like Figure 1 , Figure 2 , Figure 3 and Figure 8 As shown, a thread groove 12 is provided on one side of the platform 1, and a buckle 6 is threadedly connected to the thread groove 12. The thread groove 12 is convenient for installing the buckle 6, and the buckle 6 can be flexibly disassembled and assembled according to the use requirements. A connecting column 61 is provided at one end of the buckle 6 facing the platform 1, and a stud 62 is provided at the end of the connecting column 61. The stud 62 is threadedly connected to the thread groove 12; the cooperation between the connecting column 61 and the stud 62 is convenient for threaded connection with the platform 1.

[0047] Example 3

[0048] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a central air conditioner maintenance device includes a support platform 1, and a turntable 4 is rotatably connected to the top of the support platform 1. The support platform 1 cooperates with the turntable 4 to facilitate the support of the outdoor unit or the indoor unit of the air conditioner, so as to facilitate the maintenance of the air conditioner. A wind duct 11 is horizontally arranged in the middle of the support platform 1, and a fan 7 is installed at one end of the wind duct 11, and a filter cartridge 2 is installed at the other end of the wind duct 11. The wind duct 11 is used to install the fan 7 and the filter cartridge 2, so that the fan 7 drives the air flow to absorb dust, so that the dust is conveniently sucked into the filter cartridge 2 for filtering and processing, so as to achieve the purpose of dust collection for the air conditioner. The filter cartridge 2 and the fan 7 are detachably connected to the support platform 1. This structure is convenient for replacing the fan 7 and the filter cartridge 2. A suction pipe 3 is installed at the end of the filter cartridge 2 facing outward, and a dust suction joint 33 is connected to the top of the suction pipe 3. The suction pipe 3 cooperates with the dust suction joint 33 to facilitate the suction pipe 3 to absorb dust inside the air conditioner.

[0049] like Figure 3 As shown, a bearing 13 is provided at the middle of the top of the support 1, and the bearing 13 is rotatably connected to the support 1, and the bearing 13 is convenient for the support 1 to be rotatably connected to the machine body. Support feet 16 are provided at the corners of the bottom surface of the support 1, and the support feet 16 are convenient for supporting the support 1 to ensure that the support 1 is sufficiently stable.

[0050] like Figure 4As shown, an adapter 21 is provided at one end of the filter cartridge 2 facing outward, and the adapter 21 is convenient for threading the filter cartridge 2 with the air duct 11. A pressing plate 22 is provided at one end of the adapter 21 facing outward, and the edge of the pressing plate 22 is pressed tightly against the side of the support 1. This structure ensures that the filter cartridge 2 is stably installed inside the air duct 11. An ash inlet hole 23 is provided in the middle of the pressing plate 22, and the ash inlet hole 23 is threadedly connected to the suction pipe 3, so that the dust sucked by the suction pipe 3 can enter the inner side of the filter cartridge 2.

[0051] like Figure 5 As shown, a connection cover 31 is provided at the bottom of the suction pipe 3, and an adapter ring 32 is provided on the side of the connection cover 31 facing the base 1. The adapter ring 32 is threadedly connected to the air duct 11. The connection cover 31 cooperates with the adapter ring 32 to facilitate connection with the ash inlet hole 23, so that the suction pipe 3 is conveniently connected to the inside of the filter cartridge 2. The dust suction connector 33 at the top of the suction pipe 3 is open at one end and a handle 34 is provided at the other end; the handle 34 is convenient for holding the dust suction connector 33, so that the dust suction connector 33 can absorb dust inside the outdoor unit or the indoor unit of the air conditioner.

[0052] like Figure 6 As shown, a mounting platform 41 is provided at the bottom of the turntable 4, and a mounting shaft 42 is provided in the middle of the mounting platform 41, and the mounting shaft 42 is interference-connected with the bearing 13; the mounting platform 41 cooperates with the mounting shaft 42 to facilitate the rotational connection between the turntable 4 and the bearing 13, thereby facilitating the rotation of the turntable 4.

[0053] like Fig. 9 As shown, a mounting joint 71 is provided at one end of the fan 7 facing outward, a limiting ring 72 is provided at one end of the mounting joint 71 facing outward, the mounting joint 71 is threadedly connected to the air duct 11, and the limiting ring 72 is pressed tightly against the side of the base 1; this structure ensures flexible disassembly, assembly and use between the fan 7 and the air duct 11.

[0054] like Figure 1 , Figure 2 , Figure 3 and Figure 8 As shown, a thread groove 12 is provided on one side of the platform 1, and a buckle 6 is threadedly connected to the thread groove 12. The thread groove 12 is convenient for installing the buckle 6, and the buckle 6 can be flexibly disassembled and assembled according to the use requirements. A connecting column 61 is provided at one end of the buckle 6 facing the platform 1, and a stud 62 is provided at the end of the connecting column 61. The stud 62 is threadedly connected to the thread groove 12; the cooperation between the connecting column 61 and the stud 62 is convenient for threaded connection with the platform 1.

[0055] like Figure 1 , Figure 2 , Figure 3 and Figure 7As shown, a diagonal support plate 14 is provided at the top of the side of the support platform 1, a threaded hole 15 is provided in the middle of the diagonal support plate 14, and a positioning screw 5 is threadedly connected to the threaded hole 15. The cooperation between the diagonal support plate 14 and the threaded hole 15 is convenient for installing the positioning screw 5 and facilitating the use of the positioning screw 5. A rotating handle 51 is provided at the bottom end of the positioning screw 5, and the rotating handle 51 is convenient for rotating the positioning screw 5 against the turntable 4, thereby ensuring that the turntable 4 is sufficiently stable.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A central air conditioning maintenance device, comprising a support platform (1), characterized in that: The top end of the support platform (1) is rotatably connected to a turntable (4), and an air duct (11) is transversely arranged in the middle of the support platform (1). A fan (7) is installed at one end of the air duct (11), and a filter cartridge (2) is installed at the other end of the air duct (11). The filter cartridge (2) and the fan (7) are detachably connected to the support platform (1). A suction pipe (3) is installed at the end of the filter cartridge (2) facing outward, and a dust suction connector (33) is connected to the top end of the suction pipe (3).

2. A central air conditioning maintenance device according to claim 1, characterized in that: A bearing (13) is provided at the middle of the top of the support platform (1), and the bearing (13) is rotatably connected to the support platform (1). Support feet (16) are provided at the corners of the bottom surface of the support platform (1).

3. A central air conditioning maintenance device according to claim 1, characterized in that: An adapter (21) is provided at one end of the filter cartridge (2) facing outwards, a pressure plate (22) is provided at one end of the adapter (21) facing outwards, the edge of the pressure plate (22) is pressed tightly against the side of the support platform (1), an ash inlet hole (23) is provided in the middle of the pressure plate (22), and the ash inlet hole (23) is threadedly connected to the suction pipe (3).

4. A central air conditioning maintenance device according to claim 1, characterized in that: A connecting cover (31) is provided at the bottom end of the suction pipe (3); a switching ring (32) is provided on a side of the connecting cover (31) facing the support platform (1); the switching ring (32) is threadedly connected to the air duct (11); a dust suction connector (33) at the top end of the suction pipe (3) is open at one end and a handle (34) is provided at the other end.

5. A central air conditioning maintenance device according to claim 2, characterized in that: A mounting platform (41) is provided at the bottom end of the rotating disk (4), a mounting shaft (42) is provided in the middle of the mounting platform (41), and the mounting shaft (42) is interference-connected with the bearing (13).

6. A central air conditioning maintenance device according to claim 1, characterized in that: The end of the fan (7) facing outward is provided with a mounting joint (71), the end of the mounting joint (71) facing outward is provided with a limiting ring (72), the mounting joint (71) is threadedly connected to the air duct (11), and the limiting ring (72) is pressed tightly against the side of the support platform (1).

7. A central air conditioning maintenance device according to any one of claims 1 to 6, characterized in that: A thread groove (12) is provided on one side of the support platform (1), a buckle (6) is threadedly connected to the thread groove (12), and a connecting column (61) is provided on one end of the buckle (6) facing the support platform (1), and a stud (62) is provided at the end of the connecting column (61), and the stud (62) is threadedly connected to the thread groove (12).

8. A central air conditioning maintenance device according to any one of claims 1 to 6, characterized in that: A diagonal support plate (14) is provided at the top of the side of the support platform (1), a threaded hole (15) is provided in the middle of the diagonal support plate (14), a positioning screw (5) is threadedly connected to the threaded hole (15), and a rotating handle (51) is provided at the bottom end of the positioning screw (5).

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