Fan device and air conditioning system
By combining the hoisting components and the lifting mechanism, the problem of the wind turbine components' weight being borne by the cabinet base is solved, enabling reliable operation of the wind turbine components and simplifying installation and maintenance, while reducing the load on the cabinet base.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GREE ELECTRIC APPLIANCE INC OF ZHUHAI
- Filing Date
- 2023-08-07
- Publication Date
- 2026-05-05
AI Technical Summary
In the existing technology, the weight of the suspended wind turbine components is borne by the base of the cabinet, which results in an excessive load on the base, which is not conducive to the reliable operation of the wind turbine components. In addition, the existing wind turbine installation structure is complex, occupies a lot of space, and is inconvenient to maintain.
The system employs a hoisting assembly and a lifting mechanism. The fan assembly can move inside or outside the hoisting assembly through a movable port. The lifting mechanism includes a drive assembly and first and second fixing components. The drive assembly drives the fixing components to move and support the fan assembly on a fixed foundation, reducing the load on the cabinet base.
The lifting mechanism supports the weight of the suspended fan components, reducing the load on the cabinet base, improving the reliable operation of the fan components, and simplifying the installation and maintenance process.
Smart Images

Figure CN117006085B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of air conditioning equipment technology, and more specifically, to a fan device and an air conditioning system. Background Technology
[0002] With the widespread application of 4G and the gradual popularization of 5G, the heat generated by various data processing devices is increasing, and data centers are placing higher demands on the cooling capacity and energy efficiency of their air conditioning equipment. In downflow precision computer room air conditioning units, placing centrifugal fans outside the unit can significantly improve its air delivery efficiency, and therefore it has been widely used in engineering.
[0003] An existing air conditioning device is provided, which includes a heat exchanger and a structural component. The structural component has multiple mounting positions for installing fans, etc., and the fans are slidably fixed along sliding guide rails, making the installation of the fans convenient and the installation position adjustable. However, it is difficult to lift the bulky centrifugal fans again when repairing or replacing them.
[0004] Existing technology also provides a fan mounting structure and an air conditioner. The fan mounting structure uses multiple elastic mechanisms to connect the mounting plate assembly and the cabinet base. The fan assembly is self-locked to a first position and a second position by the elastic force changes of the elastic mechanisms. However, it is difficult to ensure that the multiple elastic mechanisms change synchronously during operation, which can easily cause the fan assembly to tilt or fall over. In particular, when the unit encounters severe bumps during transportation, the elastic mechanisms may expand or contract, causing the fan assembly to tilt. In addition, the elastic mechanisms used in this structure also suffer from the problem of elastic force attenuation or even failure after long-term placement.
[0005] Existing technology also provides a fan mounting structure and an air conditioner. The fan mounting structure houses the fan assembly within a cabinet. The structure includes a fan and a mounting plate assembly connected to the fan. The center of the bottom of the mounting plate assembly is rotatably connected to a base, allowing the fan to rotate 180 degrees from inside the cabinet to outside through an opening. However, this structure typically requires an opening larger than the horizontal projection size of the fan assembly to ensure that the outermost edge of the fan assembly can pass through the opening during rotation. After rotation, the opening needs to be sealed with a cover plate. Furthermore, this structure makes it difficult to rotate the heavy centrifugal fan back upwards during maintenance and replacement, hindering the replacement operation for after-sales personnel.
[0006] The prior art also provides a hoisting structure for a wind turbine component, in which the moving component moves up and down within the moving port of the hoisting component through the threaded movement of the screw connecting assembly. The structure is simple and easy to operate, but this technical solution requires an auxiliary operating rod to push the screw of the connecting component to rotate. It also requires more parts. For non-cylindrical moving components, it is also necessary to prevent the rotating screw from causing rotational movement, which could easily lead to jamming within the moving port.
[0007] It is evident that the aforementioned fan fixing and installation structures typically employ a cuboid structure to secure the circular centrifugal fan, resulting in a bulky structure, excessive cabinet space occupation, and hindering fan descent. Furthermore, the fixing and lifting structures are two independent sets of mechanisms requiring a fixed connection, leading to numerous components and a complex structure. Existing fan descent technologies do not address the issue of bottom support after fan descent; the weight of the suspended fan assembly is borne by the cabinet base, resulting in excessive load on the base and compromising the reliable operation of the fan assembly. Some high-power data center air conditioners may have multiple centrifugal fans, requiring individual descent operations on-site, further increasing the size and complexity of the descent structure and process. Summary of the Invention
[0008] The main objective of this invention is to provide a fan equipment and air conditioning system to solve the problem in the prior art where the weight of the suspended fan components is borne by the base of the cabinet, resulting in excessive load on the base and hindering the reliable operation of the fan components.
[0009] To achieve the above objectives, according to one aspect of the present invention, a fan device is provided, comprising: a hoisting assembly having a movable opening; a fan assembly disposed through the movable opening; and a lifting mechanism connected to the hoisting assembly, the lifting mechanism including a lifting component located below the hoisting assembly and carrying the fan assembly, the lifting component being movably disposed in a vertical direction such that at least a portion of the fan assembly is driven by the lifting component through the movable opening and positioned outside the hoisting assembly and supported on a fixed foundation.
[0010] Furthermore, the lifting assembly includes a first fixing member and a second fixing member, with the first fixing member located above the second fixing member; the lifting mechanism also includes a drive assembly, with both the first and second fixing members connected to the drive assembly, so that the drive assembly drives the first and second fixing members to move towards each other or away from each other; wherein, the first fixing member is detachably connected to the hoisting assembly, so that when the first fixing member and the hoisting assembly are in a connected state, the second fixing member moves away from the first fixing member under the action of the drive assembly and is supported on the fixed foundation; when the first fixing member and the hoisting assembly are in a separated state, the first fixing member moves towards the second fixing member supported on the fixed foundation under the action of the drive assembly, so that at least a portion of the wind turbine assembly extends to the outside of the hoisting assembly.
[0011] Furthermore, the drive assembly includes a drive rod and a transmission tube. The drive rod includes a first rod segment with an external thread. The transmission tube is disposed on a first fixing member and has an internal thread that matches the external thread. The drive rod passes through the transmission tube and the external thread is threadedly connected to the internal thread. The drive rod is rotatably connected to a second fixing member.
[0012] Furthermore, the drive rod also includes a second rod segment connected to the first rod segment; the second fixing member includes a main body with a connecting hole, the second rod segment being rotatably inserted into the connecting hole with a clearance fit; the second rod segment is provided with a second connecting hole, the drive rod also includes a limiting rod, the limiting rod being inserted into the second connecting hole and being perpendicular to the drive rod; the main body is provided with a limiting hole, the limiting hole penetrating the main body in a direction perpendicular to the drive rod, and the limiting rod being rotatably disposed within the limiting hole.
[0013] Furthermore, the lifting mechanism also includes a first slide rod and a second slide rod, which are disposed on opposite sides of the drive rod. Both the first slide rod and the second slide rod are slidably mounted on the first fixed member. The first slide rod is movable in both directions close to and away from the drive rod, and the second slide rod is movable in both directions close to and away from the drive rod. The lifting mechanism also includes a linkage assembly, which includes a first connecting rod and a second connecting rod. The first end of the first connecting rod is hinged to the second fixed member, and the second end of the first connecting rod is hinged to the first slide rod. The first end of the second connecting rod is hinged to the second fixed member, and the second end of the second connecting rod is hinged to the second slide rod.
[0014] Furthermore, the first fixing member is provided with a first sliding groove extending in the horizontal direction, and the first sliding rod is slidably disposed in the first sliding groove; the first fixing member is provided with a second sliding groove extending in the horizontal direction, the second sliding groove and the first sliding groove are disposed on opposite sides of the drive rod, and the second sliding rod is slidably disposed in the second sliding groove.
[0015] Furthermore, the second fixing member includes a main body, a first connecting part, and a second connecting part. Both the first connecting part and the second connecting part are connected to the main body and located on opposite sides of the main body. The first slide rod and the second slide rod are arranged in parallel. The lifting mechanism includes two linkage assemblies, which are arranged sequentially along the extension direction of the first slide rod. The two linkage assemblies include a first linkage assembly and a second linkage assembly. The first end of the first link and the first end of the second link of the first linkage assembly are both hinged to the first connecting part. The first end of the first link and the first end of the second link of the second linkage assembly are both hinged to the second connecting part.
[0016] Furthermore, the first fixing member includes a support plate, a first side plate, and a second side plate. The support plate supports the fan assembly. The first side plate and the second side plate are located on opposite sides of the support plate. The first end of the first side plate and the first end of the second side plate are both connected to the support plate. The second end of the first side plate and the second end of the second side plate both extend downward toward the support plate. The first fixing member is provided with two first sliding grooves, one of which is provided on the first side plate and the other on the second side plate. A first sliding rod is slidably disposed in the two first sliding grooves. The first fixing member is provided with two second sliding grooves, one of which is provided on the first side plate and the other on the second side plate. A second sliding rod is slidably disposed in the two second sliding grooves.
[0017] Furthermore, the first end of the first slide rod passes through the first side plate, and the second end of the first slide rod passes through the second side plate; the lifting mechanism also includes two first limiting parts, one first limiting part is connected to the first end of the first slide rod and located on the side of the first side plate away from the second side plate, and the other first limiting part is connected to the second end of the first slide rod and located on the side of the second side plate away from the first side plate; and / or, the first end of the second slide rod passes through the first side plate, and the second end of the second slide rod passes through the second side plate; the lifting mechanism also includes two second limiting parts, one second limiting part is connected to the first end of the second slide rod and located on the side of the first side plate away from the second side plate, and the other second limiting part is connected to the second end of the second slide rod and located on the side of the second side plate away from the first side plate.
[0018] Furthermore, the fan equipment includes at least two fan assemblies, including a first fan assembly and a second fan assembly, which are disposed on opposite sides of the drive rod; the first fixing member includes a support plate that supports the first fan assembly and the second fan assembly, and the support plate is provided with a first through hole and a second through hole, which are disposed on opposite sides of the drive rod; the first through hole is disposed opposite to at least a portion of the first fan assembly, and the second through hole is disposed opposite to at least a portion of the second fan assembly.
[0019] Furthermore, the wind turbine equipment also includes: a first fastening assembly, which is connected to both the wind turbine assembly and the first fixing member, so that the wind turbine assembly is fixedly connected to the first fixing member through the first fastening assembly.
[0020] Furthermore, the fan equipment also includes a locking nut and a second fastening assembly. The locking nut is detachably connected to the first rod segment. The base of the hoisting assembly is detachably connected to the first fixing member through the second fastening assembly, and the moving port is provided on the base. The fan equipment has a first fixed state. When the fan equipment is in the first fixed state, the fan assembly is located inside the hoisting assembly. The drive rod passes through the through hole in the base, and the locking nut is threadedly connected to the first rod segment and abuts against the end face of the base away from the lifting assembly. The first fixing member is fixedly connected to the base through the second fastening assembly.
[0021] Furthermore, the wind turbine equipment also includes a mobile state. When the wind turbine equipment is in a mobile state, the locking nut is separated from the first rod segment, and the first fixing member is separated from the base.
[0022] Furthermore, the fan equipment also includes a third fastening assembly, through which the guide ring at the top of the fan assembly is detachably connected to the base; the fan equipment also includes a second fixed state, in which the second fixing member is supported on the fixed foundation, and at least a portion of the fan assembly is located outside the lifting assembly; the locking nut is threadedly connected to the first rod segment and abuts against the end face of the base away from the lifting assembly; the guide ring is fixedly connected to the base through the third fastening assembly.
[0023] According to another aspect of the present invention, an air conditioning system is provided, including a fan device, wherein the fan device is the aforementioned fan device.
[0024] According to the technical solution of this invention, the fan equipment includes a hoisting assembly, a fan assembly, and a lifting mechanism. The fan assembly can move vertically under the action of the lifting mechanism, and can be located inside the hoisting assembly or extend out of the hoisting assembly through a movable opening. The lifting mechanism of the fan equipment includes a lifting assembly located below the hoisting assembly and supporting the fan assembly. The lifting assembly is movably arranged vertically so that at least a portion of the fan assembly is driven by the lifting assembly to be located outside the hoisting assembly and supported on a fixed foundation after passing through the movable opening. When the fan assembly is lowered by the lifting assembly, the lifting assembly is supported on the fixed foundation. The weight of the suspended fan assembly is supported by the lifting assembly, which greatly reduces the load on the base of the air conditioning system cabinet and facilitates the reliable operation of the fan assembly. Attached Figure Description
[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:
[0026] Figure 1 A schematic diagram of the lifting mechanism of the fan equipment according to the present invention is shown;
[0027] Figure 2 A front view of the lifting mechanism of the fan equipment according to the present invention is shown;
[0028] Figure 3 A side view of the lifting mechanism of the wind turbine equipment according to the present invention is shown;
[0029] Figure 4 An exploded view of the lifting mechanism of the fan equipment according to the present invention is shown;
[0030] Figure 5 A front view of the second fixing member of the wind turbine device according to the present invention is shown;
[0031] Figure 6 A top view of the second fixing member of the wind turbine device according to the present invention is shown;
[0032] Figure 7 A side view of the second fixing member of the wind turbine device according to the present invention is shown;
[0033] Figure 8 A front view of the drive rod of the wind turbine device according to the present invention is shown;
[0034] Figure 9 A top view of the drive rod of the wind turbine device according to the present invention is shown;
[0035] Figure 10 A first side view of the drive rod of the wind turbine device according to the present invention is shown;
[0036] Figure 11 A second side view of the drive rod of the wind turbine device according to the present invention is shown;
[0037] Figure 12 A schematic diagram of an embodiment of the fan equipment according to the present invention in a first fixed state is shown;
[0038] Figure 13 A front view of an embodiment of the wind turbine equipment according to the present invention in a first fixed state is shown;
[0039] Figure 14 A schematic diagram is shown of an embodiment of the fan equipment according to the present invention in the first unsecured state;
[0040] Figure 15 A front view of an embodiment of the wind turbine device according to the present invention in the first unlocked state is shown;
[0041] Figure 16 A schematic diagram of an embodiment of the wind turbine equipment according to the present invention in a moving state is shown;
[0042] Figure 17A front view of an embodiment of the wind turbine equipment according to the present invention in a moving state is shown;
[0043] Figure 18 A schematic diagram of an embodiment of the wind turbine equipment according to the present invention in a second fixed state is shown;
[0044] Figure 19 A front view of an embodiment of the wind turbine equipment according to the present invention in a second fixed state is shown.
[0045] The above figures include the following reference numerals:
[0046] 10. Lifting assembly; 11. Movable port; 12. Base; 13. First crossbeam; 14. Second crossbeam; 15. Third crossbeam; 16. Column;
[0047] 20. Fan assembly; 21. First fan assembly; 22. Second fan assembly; 23. Guide ring;
[0048] 30. Lifting mechanism; 31. Lifting assembly;
[0049] 311. First fixing component; 3111. First sliding groove; 3112. Second sliding groove; 3113. Support plate; 3114. First side plate; 3115. Second side plate; 3116. First through hole; 3117. Second through hole;
[0050] 312. Second fastener; 3121. Main body; 3122. Connecting hole; 3123. Limiting hole; 3124. First connecting part; 3125. Second connecting part; 3126. Fixing hole; 3127. Cotter pin;
[0051] 33. Driver components;
[0052] 331, Drive rod; 3311, First rod segment; 3312, Second rod segment; 3313, Second connecting hole; 3314, Limiting rod; 3315, External hexagonal head; 3316, Cross groove;
[0053] 332. Transmission pipe;
[0054] 34. First sliding rod; 341. First limiting part;
[0055] 35. Second sliding rod; 351. Second limiting part;
[0056] 36. First link; 37. Second link; 38. First link assembly; 39. Second link assembly;
[0057] 40. First fastening assembly;
[0058] 50. Tighten the lock nut;
[0059] 60. Second fastening assembly;
[0060] 70. Third fastening assembly;
[0061] 80. Fixed foundation. Detailed Implementation
[0062] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0063] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0064] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0065] This invention provides a fan device, please refer to... Figures 1 to 19 The system includes: a hoisting assembly 10 having a movable opening 11; a fan assembly 20 that can be installed through the movable opening 11; and a lifting mechanism 30 connected to the hoisting assembly 10. The lifting mechanism 30 includes a lifting component 31 located below the hoisting assembly 10 and carrying the fan assembly 20. The lifting component 31 is movably installed in the vertical direction so that at least a portion of the fan assembly 20 is driven by the lifting component 31 to pass through the movable opening 11 and then positioned outside the hoisting assembly 10 and supported on a fixed foundation 80.
[0066] The fan equipment of the present invention includes a hoisting assembly 10, a fan assembly 20, and a lifting mechanism 30. The fan assembly 20 can move vertically under the action of the lifting mechanism 30 and can be located inside the hoisting assembly 10 or partially extend out of the hoisting assembly 10 through the moving port 11. The lifting mechanism 30 of the fan equipment includes a lifting component 31, which is located below the hoisting assembly 10 and carries the fan assembly 20. The lifting component 31 is movably arranged in the vertical direction so that at least a part of the fan assembly 20 is driven by the lifting component 31 to be located outside the hoisting assembly 10 and supported on the fixed foundation 80 after passing through the moving port 11. When the fan assembly 20 is lowered under the action of the lifting component 31, the lifting component 31 is supported on the fixed foundation 80. The weight of the suspended fan assembly is supported by the lifting component 31, which greatly reduces the load on the base of the air conditioning system cabinet and facilitates the reliable operation of the fan assembly.
[0067] To achieve the lifting and lowering of the fan assembly 20, and to ensure that the fan assembly 20 is supported on a fixed foundation after being lowered by the lifting assembly 31, the lifting assembly 31 includes a first fixing member 311 and a second fixing member 312, with the first fixing member 311 located above the second fixing member 312. The lifting mechanism 30 also includes a drive assembly 33, with both the first fixing member 311 and the second fixing member 312 connected to the drive assembly 33, so that the drive assembly 33 drives the first fixing member 311 and the second fixing member 312 to move towards or away from each other. The first fixing member 311... 11 is detachably connected to the hoisting assembly 10 so that when the first fixing member 311 is connected to the hoisting assembly 10, the second fixing member 312 moves away from the first fixing member 311 under the action of the drive assembly 33 and is supported on the fixed foundation 80; when the first fixing member 311 is separated from the hoisting assembly 10, the first fixing member 311 moves towards the second fixing member 312 supported on the fixed foundation 80 under the action of the drive assembly 33 so that at least a portion of the wind turbine assembly 20 extends to the outside of the hoisting assembly 10.
[0068] To change the distance between the first fixing member 311 and the second fixing member 312, the drive assembly 33 includes a drive rod 331 and a transmission tube 332. The drive rod 331 includes a first rod segment 3311 with an external thread. The transmission tube 332 is disposed on the first fixing member 311 and has an internal thread adapted to the external thread. The drive rod 331 passes through the transmission tube 332 and the external thread is threadedly connected to the internal thread. The drive rod 331 is rotatably connected to the second fixing member 312.
[0069] In practice, when the drive rod 331 rotates, it causes a threaded joint movement with the transmission tube 332, which in turn causes a change in the distance between the first fixed member 311 and the second fixed member 312. At the same time, it causes the first connecting rod assembly 38, the second connecting rod assembly 39, the first slide rod 34 and the second slide rod 35 to perform corresponding movements, thereby realizing the telescopic movement of the scissor lifting mechanism.
[0070] Specifically, the drive rod 331 further includes a second rod segment 3312 connected to the first rod segment 3311; the second fixing member 312 includes a main body 3121, on which a connecting hole 3122 is provided, and the second rod segment 3312 is rotatably inserted into the connecting hole 3122, with a clearance fit between the second rod segment 3312 and the connecting hole 3122; the second rod segment 3312 is provided with a second connecting hole 3313, and the drive rod 331 further includes a limiting rod 3314, which is inserted into the second connecting hole 3313 and is perpendicular to the drive rod 331; the main body 3121 is provided with a limiting hole 3123, which is provided through the main body 3121 in a direction perpendicular to the drive rod 331, and the limiting rod 3314 is rotatably disposed in the limiting hole 3123. Optionally, the connecting hole 3122 is provided through the main body 3121 along the extension direction of the drive rod 331. In a specific implementation, the drive rod 331 can rotate around its own center line (which is also the axis of the connecting hole 3122), at which time the drive rod 331 drives the limiting rod 3314 to rotate together.
[0071] Specifically, the drive rod 331 is a drive bolt, and the drive rod 331 also includes an external hexagonal head 3315 located at the end of the first rod segment 3311 away from the second rod segment 3312, with a cross-shaped groove 3316 provided at the center of the top of the external hexagonal head 3315. In specific implementation, the external hexagonal head 3315 is used for the clamping and driving operation of the socket tool; the cross-shaped groove 3316 is used for the limiting and driving operation of the screwdriver.
[0072] Specifically, the second rod segment 3312 is a cylindrical rod segment, and the diameter of the second rod segment 3312 is not greater than the diameter of the circumference where the root of the external thread is located.
[0073] Optionally, the second connecting hole 3313 is a threaded hole, and the limiting rod 3314 is a limiting bolt.
[0074] Specifically, the lifting mechanism 30 further includes a first slide bar 34 and a second slide bar 35, which are disposed on opposite sides of the drive rod 331. Both the first slide bar 34 and the second slide bar 35 are slidably mounted on the first fixing member 311. The first slide bar 34 is movable in both directions close to and away from the drive rod 331, and the second slide bar 35 is movable in both directions close to and away from the drive rod 331. The lifting mechanism 30 also includes a linkage assembly, which includes a first connecting rod 36 and a second connecting rod 37. The first end of the first connecting rod 36 is hinged to the second fixing member 312, and the second end of the first connecting rod 36 is hinged to the first slide bar 34. The first end of the second connecting rod 37 is hinged to the second fixing member 312, and the second end of the second connecting rod 37 is hinged to the second slide bar 35.
[0075] Specifically, the first fixing member 311 is provided with a first sliding groove 3111 extending in the horizontal direction, and the first sliding rod 34 is slidably disposed in the first sliding groove 3111; the first fixing member 311 is provided with a second sliding groove 3112 extending in the horizontal direction, the second sliding groove 3112 and the first sliding groove 3111 are disposed on opposite sides of the drive rod 331, and the second sliding rod 35 is slidably disposed in the second sliding groove 3112.
[0076] Specifically, the second fixing member 312 includes a main body 3121, a first connecting part 3124 and a second connecting part 3125. The first connecting part 3124 and the second connecting part 3125 are both connected to the main body 3121 and located on opposite sides of the main body 3121. The first slide rod 34 and the second slide rod 35 are arranged in parallel. The lifting mechanism 30 includes two linkage assemblies, which are arranged sequentially along the extension direction of the first slide rod 34. The two linkage assemblies include a first linkage assembly 38 and a second linkage assembly 39. The first end of the first link 36 and the first end of the second link 37 of the first linkage assembly 38 are both hinged to the first connecting part 3124. The first end of the first link 36 and the first end of the second link 37 of the second linkage assembly 39 are both hinged to the second connecting part 3125.
[0077] Specifically, the main body 3121 is a rod-shaped structure with a rectangular cross-section. This arrangement is beneficial for the stable placement of the second fastener 312 on the fixed foundation 80.
[0078] Specifically, the center lines of the main body 3121, the first connecting part 3124, and the second connecting part 3125 are aligned. The first end of the first connecting rod 36 and the first end of the second connecting rod 37 of the first connecting rod assembly 38 are rotatably fitted onto the first connecting part 3124. The first end of the first connecting rod 36 and the first end of the second connecting rod 37 of the second connecting rod assembly 39 are rotatably fitted onto the second connecting part 3125. In order to limit the first connecting rod assembly 38 and the second connecting rod assembly 39, a fixing hole 3126 is provided on both the first connecting part 3124 and the second connecting part 3125. The axis of the fixing hole 3126 is perpendicular to the center line of the main body 3121. A cotter pin 3127 is inserted into the fixing hole 3126 to fix the first connecting rod assembly 38 and the second connecting rod assembly 39 onto the first connecting part 3124 and the second connecting part 3125, respectively.
[0079] Specifically, the first fixing member 311 includes a support plate 3113, a first side plate 3114, and a second side plate 3115. The support plate 3113 supports the fan assembly 20. The first side plate 3114 and the second side plate 3115 are located on opposite sides of the support plate 3113. The first end of the first side plate 3114 and the first end of the second side plate 3115 are both connected to the support plate 3113, and the second ends of the first side plate 3114 and the second end of the second side plate 3115 both extend downward toward the support plate 3113. The first fixing member 311 is provided with... Two first sliding grooves 3111 are provided, one first sliding groove 3111 is provided on the first side plate 3114, and the other first sliding groove 3111 is provided on the second side plate 3115. The first sliding rod 34 is slidably provided in the two first sliding grooves 3111. Two second sliding grooves 3112 are provided on the first fixing member 311, one second sliding groove 3112 is provided on the first side plate 3114, and the other second sliding groove 3112 is provided on the second side plate 3115. The second sliding rod 35 is slidably provided in the two second sliding grooves 3112.
[0080] Specifically, the first end of the first slide rod 34 passes through the first side plate 3114, and the second end of the first slide rod 34 passes through the second side plate 3115; the lifting mechanism 30 also includes two first limiting parts 341, one first limiting part 341 is connected to the first end of the first slide rod 34 and is located on the side of the first side plate 3114 away from the second side plate 3115, and the other first limiting part 341 is connected to the second end of the first slide rod 34 and is located on the side of the second side plate 3115 away from the first side plate 3114; And / or, the first end of the second slide rod 35 passes through the first side plate 3114, and the second end of the second slide rod 35 passes through the second side plate 3115; the lifting mechanism 30 also includes two second limiting parts 351, one second limiting part 351 is connected to the first end of the second slide rod 35 and is located on the side of the first side plate 3114 away from the second side plate 3115, and the other second limiting part 351 is connected to the second end of the second slide rod 35 and is located on the side of the second side plate 3115 away from the first side plate 3114. In this way, the provision of the first limiting part 341 and the second limiting part 351 prevents the first slide rod 34 from disengaging from the first slide groove 3111 and prevents the second slide rod 35 from disengaging from the second slide groove 3112.
[0081] Optionally, both the first limiting part 341 and the second limiting part 351 are limiting nuts, and the first limiting part 341 and the second limiting part 351 are threadedly connected to the first slide rod 34 and the second slide rod 35, respectively.
[0082] Specifically, the fan equipment includes at least two fan assemblies 20, each including a first fan assembly 21 and a second fan assembly 22, which are disposed on opposite sides of the drive rod 331. The first fixing member 311 includes a support plate 3113, which supports the first fan assembly 21 and the second fan assembly 22. The support plate 3113 is provided with a first through hole 3116 and a second through hole 3117, which are disposed on opposite sides of the drive rod 331. The first through hole 3116 is disposed opposite to at least a portion of the first fan assembly 21, and the second through hole 3117 is disposed opposite to at least a portion of the second fan assembly 22.
[0083] In this embodiment, the fan equipment further includes a first fastening component 40, which is connected to both the fan assembly 20 and the first fixing member 311, so that the fan assembly 20 is fixedly connected to the first fixing member 311 through the first fastening component 40.
[0084] In practice, the fan assembly 20 is moved into the movable port 11 on the base 12 of the hoisting assembly 10 and placed on the first fixing member. The position is adjusted so that the first fan assembly 21 and the second fan assembly 22 are aligned with the first through hole 3116 and the second through hole 3117 respectively, and then connected and fixed with the first fastening assembly 40.
[0085] Specifically, the fan assembly 20 is provided with a first fastening hole, the first fastener 311 is provided with a second fastening hole, the first fastening component 40 is a bolt and nut assembly, and the fan assembly 20 is fixedly connected to the first fastener 311 by the bolt and nut assembly that is sequentially inserted into the first fastening hole and the second fastening hole.
[0086] Specifically, such as Figure 12 and 13 As shown, the fan equipment also includes a locking nut 50 and a second fastening assembly 60. The locking nut 50 is detachably connected to the first rod segment 3311. The base 12 of the hoisting assembly 10 is detachably connected to the first fixing member 311 via the second fastening assembly 60, and a moving port 11 is provided on the base 12. The fan equipment has a first fixed state. When the fan equipment is in the first fixed state, the fan assembly 20 is located inside the hoisting assembly 10. The drive rod 331 passes through the through hole of the base 12, and the locking nut 50 is threadedly connected to the first rod segment 3311 and abuts against the end face of the base 12 away from the lifting assembly 31. The first fixing member 311 is fixedly connected to the base 12 via the second fastening assembly 60. This arrangement ensures the reliable fixation of the fan assembly.
[0087] When the fan equipment is in the first fixed state, the drive rod 331 rotates and rises to the highest position, causing the lifting mechanism to retract to the lower part of the base of the hoisting assembly. The connecting rod assembly and the second fixing member are located between the first side plate and the second side plate to avoid interference with other structures. In addition, after the drive rod 331 rotates and rises to the highest position, the locking nut 50 is screwed in from top to bottom until the locking nut 50 is against the upper surface of the base 12. The drive rod 331 cannot fall freely under the double fixation of the locking nut 50 and the transmission pipe 332 welded to the first fixing member 311, thereby ensuring that the lifting mechanism 30 can be stably suspended and fixed to the lower part of the base 12 of the hoisting assembly 10.
[0088] Specifically, the hoisting assembly 10 is provided with a third fastening hole, the first fixing member 311 is provided with a fourth fastening hole, and the second fastening assembly 60 is a bolt and nut assembly. The hoisting assembly 10 is fixedly connected to the first fixing member 311 by the bolt and nut assembly that is sequentially inserted into the third fastening hole and the fourth fastening hole.
[0089] In this embodiment, as Figure 16 and Figure 17 As shown, the wind turbine equipment also includes a movable state. When the wind turbine equipment is in the movable state, the locking nut 50 separates from the first rod segment 3311, and the first fixing member 311 separates from the base 12. This arrangement allows the drive rod to be rotated so that the second fixing member 312 moves toward the fixed foundation 80, and the wind turbine assembly 20 extends out of the hoisting assembly 10.
[0090] In practice, the first fixing state needs to be released before the wind turbine assembly 20 is lowered, such as... Figure 14 and Figure 15 As shown, first, remove the locking nut 50 on the drive rod 331, and rotate the drive rod 331 downwards to extend the lifting mechanism 30 downwards until the second fixing member 312 contacts the bottom fixed base 80 and can no longer extend. Then, remove the second fastening component 60 between the base 12 of the hoisting assembly 10 and the first fixing member 311. At this point, the fan assembly 20 is supported only by the lifting mechanism 30, and the weight of the fan assembly 20 and the lifting mechanism 30 is mainly borne by the fixed base 80. Reversing the above steps will allow the fan assembly 20 to be raised, which will not be elaborated here.
[0091] In this embodiment, as Figure 18 and Figure 19 As shown, the fan equipment also includes a third fastening assembly 70, through which the guide ring 23 at the top of the fan assembly 20 is detachably connected to the base 12; the fan equipment also includes a second fixed state, in which the second fixing member 312 is supported on the fixed foundation 80, and at least a portion of the fan assembly 20 is located outside the hoisting assembly 10; the locking nut 50 is threadedly connected to the first rod segment 3311 and abuts against the end face of the base 12 away from the lifting assembly 31; the guide ring 23 is fixedly connected to the base 12 through the third fastening assembly 70.
[0092] Specifically, the base 12 of the hoisting assembly 10 is provided with a fifth fastening hole, the guide ring 23 is provided with a sixth fastening hole, the third fastening assembly 70 is a bolt and nut assembly, and the guide ring 23 is fixedly connected to the base 12 of the hoisting assembly 10 by the bolt and nut assembly that is sequentially inserted into the fifth and sixth fastening holes.
[0093] In specific implementation, such as Figure 16 and Figure 17 As shown, rotating the drive rod 331 drives the transmission tube and the first fixing member 311 to move downwards. At this time, the lifting mechanism retracts downwards, causing the fan assembly 20 on the first fixing member 311 to move downwards through the moving port 11 of the base 12. Continue rotating the drive rod 331 until the guide ring 23 at the top of the fan assembly 20 falls onto the base 12 of the hoisting assembly 10, as shown. Figure 18 and Figure 19As shown, the sinking action of the fan assembly 20 has been completed. The guide ring 23 is fixed to the base 12 with the third fastening component 70, completing the second fixed state; then the drive rod 331 is rotated slightly in the opposite direction, so that the lifting mechanism is slightly extended (that is, the lifting mechanism tends to rise, but since the guide ring 23 is already fixed to the base 12 with the third fastening component 70, the fan assembly 20 cannot be raised). The purpose is to strengthen the supporting role of the lifting structure. Then, the locking nut 50 is screwed into the drive rod 331 again and tightened against the base 12 of the hoisting assembly. The purpose is to strengthen the second fixed state of the drive rod 331, prevent the locking nut 50 from being lost, and prevent air leakage from the through hole on the base 12.
[0094] Optionally, the fixed foundation 80 is the ground or a support platform set on the ground.
[0095] Optionally, the transmission tube 332 is inserted into the mounting hole of the first fixing member 311 and welded to the first fixing member 311. The upper end face of the transmission tube 332 is flush with the upper end face of the first fixing member 311. This arrangement facilitates the tightening of the locking nut 50.
[0096] Specifically, there are two fan assemblies 20, and correspondingly, two movable ports 11 are provided on the base 12. The hoisting assembly 10 also includes a base 12, a column 16, a first crossbeam 13, a second crossbeam 14, and a third crossbeam 15. The base 12 has movable ports 11 that match the fan assemblies 20, so that each fan assembly 20 can be freely raised and lowered through the corresponding movable port 11. Each movable port 11 is also surrounded by a ring of three fastening holes evenly arranged. The holes are located at the center of the base 12, and the two movable ports 11 are symmetrically arranged about the holes. The first crossbeam 13 and the second crossbeam 14 are connected to the column 16 on the same horizontal plane, and the third crossbeam 15 is connected to the opposite first crossbeam 13 and / or second crossbeam 14.
[0097] In specific implementation, the assembly process of the lifting mechanism is as follows: the drive rod 331 is screwed into the transmission tube 332 welded and fixed on the first fixing member 311, ensuring that the second rod segment 3312 of the drive rod 331 faces downward; one first connecting rod 36 is respectively fitted into each end of the first slide rod 34, and then it is obliquely inserted into the first slide groove 3111 of the first side plate 3114, and the two ends of the first slide rod 34 are fixed with the first limiting part 341, so that the first slide rod 34 and the first connecting rod 36 cannot be dislodged from the first slide groove 3111; the above steps are repeated to connect the second slide rod 35 and the other two second connecting rods 37 and the second limiting part 351; the second rod segment 3312 of the drive rod 331 is inserted into the main body 3121. Insert the limiting rod 3314 into the limiting hole 3123 of the main body 3121 through the connecting hole 3122, and fix the limiting rod 3314 on the second connecting hole 3313 of the drive rod 331, making the exposed lengths of the two ends of the limiting rod 3314 as equal as possible; adjust the second fixing member 312 to be parallel to the first sliding rod 34 and the second sliding rod 35, and fit the first connecting rod 36 and the second connecting rod 37 on one side into the first connecting part 3124, and use a cotter pin inserted into the fixing hole 3126 of the first connecting part 3124 to limit the movement; fit the first connecting rod 36 and the second connecting rod 37 on the other side into the second connecting part 3125, and use a cotter pin inserted into the fixing hole 3126 of the second connecting part 3125 to limit the movement.
[0098] This application solves the following technical problems: the lifting structure of horizontally fixed centrifugal fans is complex, the space required is too large, lifting is difficult and maintenance is inconvenient, especially the sinking structure of two centrifugal fan components is huge, the operation is complicated and the support of the bottom floor is a problem.
[0099] The beneficial effects of this application are as follows: A symmetrical lifting mechanism 30 is installed below the base 12 for lifting and lowering the two fan assemblies 20, and also for bottom support after the fan assemblies 20 are lowered. This allows the symmetrical lifting mechanism 30 to serve multiple purposes, strengthens the vertical support of the fan assemblies 20, reduces the load on the cabinet base, and improves the operational reliability of the entire unit, especially the fan assemblies 20. The symmetrical structural design simplifies the structure of the lifting mechanism 30, and allows for lifting and lowering of both fan assemblies 20 in a single operation, which helps improve work efficiency.
[0100] The present invention also provides an air conditioning system, including a fan device, wherein the fan device is the fan device in the above embodiments.
[0101] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:
[0102] The fan equipment of the present invention includes a hoisting assembly 10, a fan assembly 20, and a lifting mechanism 30. The fan assembly 20 can move vertically under the action of the lifting mechanism 30, and can be located inside the hoisting assembly 10 or partially extend out of the hoisting assembly 10 through the moving port 11. The lifting mechanism 30 of the fan equipment includes a lifting component 31, which is located below the hoisting assembly 10 and carries the fan assembly 20. The lifting component 31 is movably arranged in the vertical direction so that at least a part of the fan assembly 20 is driven by the lifting component 31 to be located outside the hoisting assembly 10 and supported on a fixed foundation after passing through the moving port 11. When the fan assembly 20 is lowered by the lifting component 31, the lifting component 31 is supported on the fixed foundation. The weight of the suspended fan assembly is supported by the lifting component 31, which greatly reduces the load on the base of the air conditioning system cabinet and facilitates the reliable operation of the fan assembly.
[0103] 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, for example, 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.
[0104] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0105] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A fan device, characterized in that, include: The hoisting assembly (10) has a movable port (11); The fan assembly (20) can be installed through the movable port (11); A lifting mechanism (30) is connected to the hoisting assembly (10). The lifting mechanism (30) includes a lifting component (31). The lifting component (31) is located below the hoisting assembly (10) and carries the fan assembly (20). The lifting component (31) is movably arranged in the vertical direction so that the lifting component (31) drives at least a portion of the fan assembly (20) through the moving port (11) and is located outside the hoisting assembly (10) and supported on the fixed foundation (80). The lifting assembly (31) includes a first fixing member (311) and a second fixing member (312), with the first fixing member (311) located above the second fixing member (312); The lifting mechanism (30) further includes a drive assembly (33), wherein the first fixing member (311) and the second fixing member (312) are both connected to the drive assembly (33) so that the drive assembly (33) drives the first fixing member (311) and the second fixing member (312) to move towards each other or away from each other; The first fixing member (311) is detachably connected to the hoisting assembly (10) so that when the first fixing member (311) and the hoisting assembly (10) are connected, the second fixing member (312) moves away from the first fixing member (311) under the action of the drive assembly (33) and is supported on the fixed foundation (80); when the first fixing member (311) and the hoisting assembly (10) are separated, the first fixing member (311) moves towards the second fixing member (312) supported on the fixed foundation (80) under the action of the drive assembly (33) so that at least a portion of the wind turbine assembly (20) extends to the outside of the hoisting assembly (10).
2. The fan equipment according to claim 1, characterized in that, The drive assembly (33) includes a drive rod (331) and a transmission tube (332). The drive rod (331) includes a first rod segment (3311) with an external thread. The transmission tube (332) is disposed on the first fixing member (311) and has an internal thread that is adapted to the external thread. The drive rod (331) passes through the transmission tube (332) and the external thread is threadedly connected to the internal thread. The drive rod (331) is rotatably connected to the second fixing member (312).
3. The fan equipment according to claim 2, characterized in that, The drive rod (331) further includes a second rod segment (3312) connected to the first rod segment (3311); the second fixing member (312) includes a main body (3121), the main body (3121) is provided with a connecting hole (3122), the second rod segment (3312) is rotatably inserted into the connecting hole (3122), and the second rod segment (3312) is clearance-fitted with the connecting hole (3122); The second rod segment (3312) is provided with a second connecting hole (3313). The driving rod (331) also includes a limiting rod (3314). The limiting rod (3314) is inserted into the second connecting hole (3313) and is perpendicular to the driving rod (331). The main body (3121) is provided with a limiting hole (3123). The limiting hole (3123) is provided through the main body (3121) in a direction perpendicular to the driving rod (331). The limiting rod (3314) is rotatably disposed in the limiting hole (3123).
4. The fan equipment according to claim 2, characterized in that, The lifting mechanism (30) further includes a first slide rod (34) and a second slide rod (35). The first slide rod (34) and the second slide rod (35) are disposed on opposite sides of the drive rod (331). The first slide rod (34) and the second slide rod (35) are slidably disposed on the first fixing member (311). The first slide rod (34) is movable in both directions close to the drive rod (331) and away from the drive rod (331). The second slide rod (35) is movable in both directions close to the drive rod (331) and away from the drive rod (331). The lifting mechanism (30) further includes a linkage assembly, which includes a first linkage (36) and a second linkage (37). The first end of the first linkage (36) is hinged to the second fixing member (312), and the second end of the first linkage (36) is hinged to the first slide rod (34). The first end of the second linkage (37) is hinged to the second fixing member (312), and the second end of the second linkage (37) is hinged to the second slide rod (35).
5. The fan equipment according to claim 4, characterized in that, The first fixing member (311) is provided with a first sliding groove (3111) extending in the horizontal direction, and the first sliding rod (34) is slidably disposed in the first sliding groove (3111); the first fixing member (311) is provided with a second sliding groove (3112) extending in the horizontal direction, the second sliding groove (3112) and the first sliding groove (3111) are disposed on opposite sides of the drive rod (331), and the second sliding rod (35) is slidably disposed in the second sliding groove (3112).
6. The fan equipment according to claim 4, characterized in that, The second fastener (312) includes a main body (3121), a first connecting part (3124), and a second connecting part (3125). The first connecting part (3124) and the second connecting part (3125) are both connected to the main body (3121) and located on opposite sides of the main body (3121). The first slide bar (34) and the second slide bar (35) are arranged in parallel; the lifting mechanism (30) includes two link assemblies, which are arranged sequentially along the extension direction of the first slide bar (34); the two link assemblies include a first link assembly (38) and a second link assembly (39), the first end of the first link (36) and the first end of the second link (37) of the first link assembly (38) are both hinged to the first connecting part (3124); the first end of the first link (36) and the first end of the second link (37) of the second link assembly (39) are both hinged to the second connecting part (3125).
7. The fan equipment according to claim 6, characterized in that, The first fixing member (311) includes a support plate (3113), a first side plate (3114), and a second side plate (3115). The support plate (3113) supports the fan assembly (20). The first side plate (3114) and the second side plate (3115) are located on opposite sides of the support plate (3113). The first end of the first side plate (3114) and the first end of the second side plate (3115) are both connected to the support plate (3113). The second end of the first side plate (3114) and the second end of the second side plate (3115) both extend downward toward the support plate (3113). The first fixing member (311) is provided with two first sliding grooves (3111), one of the first sliding grooves (3111) is provided on the first side plate (3114), and the other first sliding groove (3111) is provided on the second side plate (3115). The first sliding rod (34) is slidably provided in the two first sliding grooves (3111). The first fixing member (311) is provided with two second sliding grooves (3112), one second sliding groove (3112) is provided on the first side plate (3114), and the other second sliding groove (3112) is provided on the second side plate (3115). The second sliding rod (35) is slidably provided in the two second sliding grooves (3112).
8. The fan equipment according to claim 7, characterized in that, The first end of the first slide rod (34) passes through the first side plate (3114), and the second end of the first slide rod (34) passes through the second side plate (3115); the lifting mechanism (30) further includes two first limiting parts (341), one of which is connected to the first end of the first slide rod (34) and located on the side of the first side plate (3114) away from the second side plate (3115), and the other of which is connected to the second end of the first slide rod (34) and located on the side of the second side plate (3115) away from the first side plate (3114); and / or, The first end of the second slide rod (35) passes through the first side plate (3114), and the second end of the second slide rod (35) passes through the second side plate (3115). The lifting mechanism (30) also includes two second limiting parts (351). One second limiting part (351) is connected to the first end of the second slide rod (35) and is located on the side of the first side plate (3114) away from the second side plate (3115). The other second limiting part (351) is connected to the second end of the second slide rod (35) and is located on the side of the second side plate (3115) away from the first side plate (3114).
9. The fan equipment according to any one of claims 2 to 8, characterized in that, The fan equipment includes at least two fan assemblies (20), and the at least two fan assemblies (20) include a first fan assembly (21) and a second fan assembly (22), and the first fan assembly (21) and the second fan assembly (22) are disposed on opposite sides of the drive rod (331); The first fixing member (311) includes a support plate (3113) that supports the first fan assembly (21) and the second fan assembly (22). The support plate (3113) is provided with a first through hole (3116) and a second through hole (3117). The first through hole (3116) and the second through hole (3117) are provided on opposite sides of the drive rod (331). The first through hole (3116) is disposed opposite to at least a portion of the first fan assembly (21), and the second through hole (3117) is disposed opposite to at least a portion of the second fan assembly (22).
10. The fan equipment according to any one of claims 1 to 8, characterized in that, The fan equipment also includes: The first fastening component (40) is connected to both the fan assembly (20) and the first fixing member (311) so that the fan assembly (20) is fixedly connected to the first fixing member (311) through the first fastening component (40).
11. The fan equipment according to any one of claims 2 to 8, characterized in that, The wind turbine equipment also includes a locking nut (50) and a second fastening assembly (60), the locking nut (50) being detachably connected to the first rod segment (3311); the base (12) of the hoisting assembly (10) is detachably connected to the first fixing member (311) through the second fastening assembly (60), and the moving port (11) is provided on the base (12); The fan equipment has a first fixed state. When the fan equipment is in the first fixed state, the fan assembly (20) is located inside the hoisting assembly (10); the drive rod (331) passes through the through hole of the base (12); the locking nut (50) is threadedly connected to the first rod segment (3311) and abuts against the end face of the base (12) away from the lifting assembly (31); the first fixing member (311) is fixedly connected to the base (12) through the second fastening assembly (60).
12. The fan equipment according to claim 11, characterized in that, The fan equipment also includes a moving state. When the fan equipment is in the moving state, the locking nut (50) is separated from the first rod segment (3311), and the first fixing member (311) is separated from the base (12).
13. The fan equipment according to claim 11, characterized in that, The fan equipment also includes a third fastening assembly (70), and the guide ring (23) at the top of the fan assembly (20) is detachably connected to the base (12) via the third fastening assembly (70); The fan equipment also includes a second fixed state. When the fan equipment is in the second fixed state, the second fixing member (312) is supported on the fixed foundation (80), and at least a portion of the fan assembly (20) is located outside the hoisting assembly (10). The locking nut (50) is threadedly connected to the first rod segment (3311) and abuts against the end face of the base (12) away from the lifting assembly (31). The guide ring (23) is fixedly connected to the base (12) through the third fastening assembly (70).
14. An air conditioning system, comprising a fan unit, characterized in that, The wind turbine equipment is the wind turbine equipment according to any one of claims 1 to 13.
Citation Information
Patent Citations
Sunken installation structure of machine room air conditioner fan
CN217584853U