Lifting device and air conditioning unit

Abstract

The application provides a lifting device and an air conditioning unit, the lifting device is used for driving a fan assembly of the air conditioning unit to perform lifting movement, and the lifting device comprises: a fixed plate used for bearing the fan assembly; a first lifting assembly, a bottom end of the first lifting assembly is used for contacting a supporting base surface, the first lifting assembly is slidably connected with the fixed plate, so that when the first lifting assembly contacts the supporting base surface, the first lifting assembly is movably arranged relative to the supporting base surface; and a transmission assembly, the transmission assembly is in transmission connection with the first lifting assembly, so as to drive the bottom end of the first lifting assembly to move relative to the supporting base surface through the transmission assembly, so as to lift the fixed plate relative to the supporting base surface, and realize the lifting movement of the fan assembly. The fan assembly is lifted by the lifting device and is supported after descending, so as to solve the problems of difficult lifting and difficult bottom supporting of the fan assembly in the air conditioning unit in the prior art.

Description

Technical Field

[0001] This invention relates to the field of centrifugal fan technology, and more specifically, to a lifting device and an air conditioning unit. Background Technology

[0002] Currently, 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 existing technology, precision air conditioning units with downflow systems employ multiple flexible mechanisms to connect the mounting plate assembly and the cabinet base. The fan assembly is self-locked to the first and second positions by the elasticity changes of these mechanisms.

[0003] However, the aforementioned air conditioning unit structure makes it difficult to ensure synchronized changes in multiple elastic mechanisms during operation, easily leading to tilting or tipping of the fan assembly. This is especially true during transport when the unit experiences severe bumps, which may cause the elastic mechanisms to expand or contract, resulting in tilting of the fan assembly. Furthermore, the elastic mechanisms used in this structure may experience elasticity attenuation or even failure over long-term storage. In addition, existing fan fixing and installation structures typically use a cuboid structure to fix a circular centrifugal fan, resulting in a bulky structure, excessive cabinet space usage, and difficulties in fan lowering. Moreover, the fixing and lifting structures are two independent sets of mechanisms requiring fixed connections, resulting in numerous components and a complex structure. Existing fan lowering technologies do not address the issue of bottom support after the fan is lowered; the weight of the suspended fan assembly is borne by the cabinet base, which places an excessive load on the base, hindering reliable operation of the fan assembly. Summary of the Invention

[0004] The main objective of this invention is to provide a lifting device and an air conditioning unit to solve the problems of difficulty in lifting the fan assembly and difficulty in providing bottom support in the existing air conditioning units.

[0005] To achieve the above objectives, according to one aspect of the present invention, a lifting device is provided for driving a fan assembly of an air conditioning unit to move up and down. The lifting device includes: a fixed plate for supporting the fan assembly; a first lifting assembly, the bottom end of which is used to contact a supporting base surface, the first lifting assembly being slidably connected to the fixed plate so that when the bottom end of the first lifting assembly contacts the supporting base surface, the fixed plate is movably disposed relative to the supporting base surface; and a transmission assembly, which is drively connected to the first lifting assembly so that when the bottom end of the first lifting assembly contacts the supporting base surface, the transmission assembly drives the top end of the first lifting assembly to move relative to the supporting base surface, thereby causing the fixed plate to move up and down relative to the supporting base surface, thus realizing the lifting movement of the fan assembly.

[0006] Furthermore, the first lifting component has a retracted state where its bottom end is stored in the fixed plate and a supported state where its bottom end is in contact with the supporting base surface; when the first lifting component is in the supported state, the transmission component drives the top end of the first lifting component to move relative to the supporting base surface, so as to realize the lifting of the fixed plate relative to the supporting base surface.

[0007] Furthermore, the first lifting assembly includes a first lifting frame, a sliding rod is provided at the top of the first lifting frame, and the sliding rod is slidably connected to the fixed plate; a fixed rod is provided at the bottom of the first lifting assembly, and the fixed rod is used to contact the supporting base surface.

[0008] Furthermore, the first lifting assembly also includes two opposing first lifting rods. One end of the sliding rod passes through the top of one first lifting rod and is slidably connected to the fixed plate. The other end of the sliding rod passes through the top of the other first lifting rod and is slidably connected to the fixed plate. The two ends of the fixed rod are respectively connected to the bottom ends of the two first lifting rods.

[0009] Furthermore, the fixing rod also includes a first roller, which is sleeved on the fixing rod, and / or a fixing block is provided on the fixing rod, and the transmission component is connected to the fixing block to drive the fixing rod to move.

[0010] Furthermore, the fixing plate includes a main fixing plate body and folding plates located on both sides of the main fixing plate body. Both folding plates are provided with sliding grooves, and the two ends of the sliding rod are slidably inserted into the corresponding sliding grooves.

[0011] Furthermore, both ends of the sliding rod are provided with through rod segments that pass through corresponding slide grooves. The first lifting assembly also includes a locking component, which is detachably provided at the end of the through rod segment that extends out of the slide groove to prevent the through rod segment from detaching from the slide groove.

[0012] Furthermore, the transmission assembly includes a rotating rod, one end of which is rotatably connected to the bottom end of the first lifting assembly. A first through hole is provided on the fixed plate, and the rotating rod has a threaded rod segment passing through the first through hole.

[0013] Furthermore, the lifting device also includes a second lifting assembly. The bottom end of the second lifting assembly is used to contact the support base surface, and the top end of the second lifting assembly is rotatably connected to the fixed plate so that when the transmission assembly drives the top end of the first lifting assembly to move relative to the support base surface, the second lifting assembly moves synchronously so that the bottom end of the second lifting assembly moves closer to or further away from the bottom end of the first lifting assembly.

[0014] Furthermore, the first lifting component includes a first lifting frame, the second lifting component includes a second lifting frame, the first lifting frame and the second lifting frame are rotatably connected; and / or the transmission component is drively connected to the second lifting component so that when the transmission component drives the first lifting component to move, it synchronously drives the second lifting component to move; and / or the lowest point of the bottom end of the first lifting component and the lowest point of the bottom end of the second lifting component are located in the same horizontal plane.

[0015] Furthermore, the second lifting assembly includes: a second lifting frame, the top end of which is rotatably connected to a fixed plate, and a rotatably mounted movable rod at the bottom end of the second lifting frame, the movable rod being used to contact the supporting base surface.

[0016] Furthermore, the second lifting assembly also includes two opposing second lifting rods and a drive rod. One end of the drive rod passes through the top of one second lifting rod and is rotatably connected to the fixed plate. The other end of the drive rod passes through the top of the other second lifting rod and is rotatably connected to the fixed plate. The two ends of the moving rod are rotatably connected to the bottom ends of the two second lifting rods respectively. The transmission assembly includes a rotating rod. The drive rod is provided with a first threaded hole, and the rotating rod has a threaded section that is threaded into the first threaded hole.

[0017] Furthermore, the movable rod also includes a second roller, which is rotatably sleeved on the movable rod.

[0018] Furthermore, the fixing plate is provided with a clearance opening for at least part of the fan assembly to pass through; and / or the fixing plate is provided with a first connection hole through which the fan assembly is fixedly connected to the fixing plate.

[0019] Furthermore, the lifting device also includes a hoisting assembly, which includes: a base having a movable opening for the fan assembly to pass through, and multiple fixing holes arranged around the movable opening to fix the fixing plate to the base by means of a first fixing member passing through the fixing plate and fixing holes when the first lifting assembly is in the retracted state; after the fan assembly is lowered to a predetermined state, the fan assembly is fixed to the base by means of a second fixing member passing through the fan assembly and fixing holes; multiple columns, the bottom ends of which are connected to the base; and multiple crossbeams, with at least one crossbeam provided between any two adjacent columns along the circumference of the base.

[0020] According to another aspect of the present invention, an air conditioning unit is provided, including a fan assembly, a lifting device as described above, and the fan assembly being mounted on the lifting device.

[0021] Furthermore, the fan assembly includes a centrifugal fan, an upper mounting plate, a lower mounting plate, and multiple fixing columns. The lower mounting plate is connected to the centrifugal fan, and the two ends of the multiple fixing columns are respectively connected to the upper mounting plate and the lower mounting plate. The outer peripheral surface of the upper mounting plate protrudes beyond the outer peripheral surface of the lower mounting plate.

[0022] According to the technical solution of this invention, the lifting device is connected to the fan assembly and is used to drive the fan assembly of the air conditioning unit to move up and down. The lifting device includes a fixed plate, a first lifting component, and a transmission component. The fixed plate is used to support the fan assembly. The bottom end of the first lifting component is used to contact the supporting base surface. The first lifting component is slidably connected to the fixed plate so that when the bottom end of the first lifting component contacts the supporting base surface, the fixed plate is movably disposed relative to the supporting base surface. The transmission component is drivenly connected to the first lifting component so that when the bottom end of the first lifting component contacts the supporting base surface, the transmission component drives the top end of the first lifting component to move relative to the supporting base surface, so that the fixed plate moves up and down relative to the supporting base surface, thereby realizing the lifting movement of the fan assembly. In the above configuration, the fixed plate is connected to the fan assembly and supports the fan assembly, driving its lifting and lowering movement. The first lifting assembly is movably connected to the fixed plate. A drive transmission assembly rotates the top of the first lifting assembly relative to the fixed plate, causing its bottom to contact the support base. Further, the drive transmission assembly moves the top of the first lifting assembly relative to the support base, thereby causing the fixed plate to descend relative to the support base, thus lowering the fan assembly. Simultaneously, the first lifting assembly supports the fan assembly during its descent. This configuration achieves both the lifting and lowering of the fan assembly and the support provided after descent, strengthening the vertical support of the fan assembly, reducing the load on the cabinet base, and improving the overall operational reliability, especially for the centrifugal fan. This solves the problems of difficult lifting and lowering of the fan assembly and difficult bottom support in existing air conditioning units. Attached Figure Description

[0023] 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:

[0024] Figure 1 A structural schematic diagram of an embodiment of the lifting device and fan assembly according to the present invention is shown;

[0025] Figure 2 A first-view structural schematic diagram of an embodiment of the lifting assembly of the lifting device according to the present invention is shown;

[0026] Figure 3 A second perspective structural schematic diagram of an embodiment of the lifting assembly of the lifting device according to the present invention is shown;

[0027] Figure 4 A third-view structural schematic diagram of an embodiment of the lifting assembly of the lifting device according to the present invention is shown;

[0028] Figure 5 A structural schematic diagram from a fourth perspective of an embodiment of the lifting assembly of the lifting device according to the present invention is shown;

[0029] Figure 6 A schematic diagram of the lifting assembly in a stowed state according to an embodiment of the lifting device of the present invention is shown;

[0030] Figure 7 A schematic diagram of the lifting assembly in a supported state according to an embodiment of the lifting device of the present invention is shown;

[0031] Figure 8 A schematic diagram of the movement state of the lifting component after it is in a supported state, according to an embodiment of the lifting device of the present invention, is shown.

[0032] Figure 9 A schematic diagram of the structure of the lifting assembly in the supported state after the fan assembly has been lowered, according to an embodiment of the lifting device of the present invention, is shown.

[0033] Figure 10 A schematic diagram of the structure of the fixing rod according to an embodiment of the first lifting assembly of the present invention is shown;

[0034] Figure 11 A schematic diagram of the drive rod according to an embodiment of the second lifting assembly of the present invention is shown.

[0035] The above figures include the following reference numerals:

[0036] 1. Fan assembly; 2. Support base; 3. Centrifugal fan; 4. Upper mounting plate; 5. Lower mounting plate; 6. Fixed column; 10. Fixed plate; 11. Main fixed plate body; 12. Folding plate; 120. Slide groove; 13. Clearance opening; 14. First connecting hole; 15. First through hole; 20. First lifting assembly; 21. First lifting frame; 22. Sliding rod; 221. Through rod segment; 23. Fixed rod; 230. First roller; 231. Fixed block; 24. First lifting rod; 25. Locking component; 30. Transmission assembly; 31. Rotating rod; 40. Second lifting assembly; 41. Second lifting frame; 42. Moving rod; 421. Second roller; 43. Second lifting rod; 44. Drive rod; 441. First threaded hole; 50. Lifting assembly; 51. Base; 510. Moving opening; 511. Fixed hole; 52. Column; 53. Crossbeam. Detailed Implementation

[0037] 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.

[0038] like Figures 1 to 11 As shown, in the first aspect of the technical solution of the present invention, a lifting device is provided for driving the fan assembly 1 of an air conditioning unit to move up and down. The lifting device includes a fixed plate 10, a first lifting component 20, and a transmission component 30. The fixed plate 10 is used to support the fan assembly 1. The bottom end of the first lifting component 20 is used to contact the supporting base surface 2. The first lifting component 20 is slidably connected to the fixed plate 10 so that when the bottom end of the first lifting component 20 contacts the supporting base surface 2, the fixed plate 10 is movably disposed relative to the supporting base surface 2. The transmission component 30 is drivenly connected to the first lifting component 20 so that when the bottom end of the first lifting component 20 contacts the supporting base surface 2, the top end of the first lifting component 20 is driven to move relative to the supporting base surface 2 through the transmission component 30, so that the fixed plate 10 moves up and down relative to the supporting base surface 2, thereby realizing the lifting movement of the fan assembly 1.

[0039] Applying the technical solution of this embodiment, the above-mentioned configuration connects the fixed plate 10 to the fan assembly 1 and carries the fan assembly 1 to drive its lifting and lowering movement. The first lifting assembly 20 is movably connected to the fixed plate 10. By driving the transmission assembly 30, the top end of the first lifting assembly 20 is rotated relative to the fixed plate 10, so that the bottom end of the first lifting assembly 20 contacts the support base 2. Further, by driving the transmission assembly 30, the top end of the first lifting assembly 20 is moved relative to the support base 2, thereby driving the fixed plate 10 to descend relative to the support base 2, and the fixed plate 10 drives the fan assembly 1 to descend. At the same time, when the fan assembly 1 descends, the first lifting assembly 20 supports the fan assembly 1. This realizes the lifting and lowering movement of the fan assembly 1 and the support of the fan assembly 1 after descent, strengthens the vertical support strength of the fan assembly 1, reduces the load on the cabinet base 51, and improves the operational reliability of the whole unit, especially the centrifugal fan 3, thereby solving the problems of difficult lifting and lowering of the fan assembly 1 and difficult bottom support in the prior art air conditioning units.

[0040] like Figures 6 to 9As shown, the first lifting component 20 has a retracted state where its bottom end is housed in the fixed plate 10 and a supported state where its bottom end is in contact with the supporting base 2. When the first lifting component 20 is in the supported state, the transmission component 30 drives the top end of the first lifting component 20 to move relative to the supporting base 2, thereby realizing the lifting and lowering of the fixed plate 10 relative to the supporting base 2. In the above configuration, one end of the transmission component 30 is rotatably connected to the first lifting component 20, and the other end is rotatably connected to the fixed plate 10. By driving the transmission component 30 to rotate, the first lifting component 20 in the retracted state is moved relative to the fixed plate 10 until its bottom end contacts the supporting base 2 and is in the supported state. Then, by driving the top end of the first lifting component 20 to move relative to the supporting base 2, the fixed plate 10 is lowered relative to the supporting base 2, thereby driving the fan component 1 to move downward. This realizes the lifting and lowering of the fan component 1 and the support of the fan component 1 after it has descended, solving the problems of difficult lifting and lowering of the fan component 1 and difficult bottom support in the existing air conditioning units.

[0041] like Figures 2 to 5 and Figure 10 As shown, the first lifting assembly 20 includes a first lifting frame 21. A sliding rod 22 is provided at the top of the first lifting frame 21, and the sliding rod 22 is slidably connected to the fixed plate 10. A fixed rod 23 is provided at the bottom of the first lifting assembly 20, and the fixed rod 23 is used to contact the supporting base surface 2. In the above configuration, the fixed rod 23 includes a large rod section in the middle and small rod sections at both ends. The diameter of the large rod section is larger than the diameter of the small rod sections at both ends. First limiting holes are provided on the small rod sections at both ends, and the axis of the first limiting holes intersects perpendicularly with the central axis of the fixed rod 23. One end of the transmission assembly 30 is rotatably connected to the fixed rod 23, and the other end is rotatably connected to the fixed plate 10. When the first lifting assembly 20 is in the retracted state, the transmission assembly 30 is driven to rotate to drive the sliding rod 22 to move relative to the fixed plate 10 until the fixed rod 23 contacts the support base 2. At this time, the first lifting assembly 20 is in the supported state. Then, the transmission assembly 30 is driven to rotate to drive the sliding rod 22 to move relative to the support base 2. Thus, the fan assembly 1 moves downward under the support of the fixed plate 10 and is supported.

[0042] Furthermore, the first lifting assembly 20 also includes two opposing first lifting rods 24. One end of a sliding rod 22 passes through the top of one first lifting rod 24 and is slidably connected to the fixed plate 10. The other end of the sliding rod 22 passes through the top of the other first lifting rod 24 and is slidably connected to the fixed plate 10. Both ends of the fixed rod 23 are respectively connected to the bottom ends of the two first lifting rods 24. With this configuration, the transmission assembly 30 drives the fixed rod 23 of the first lifting frame 21 to move, causing the sliding rod 22 of the first lifting frame 21 to slide relative to the fixed plate 10. Then, the movement of the first lifting assembly 20 relative to the fixed plate 10 causes the fan assembly 1 to descend and support it. The small rod segments at both ends of the fixed rod 23 pass through the bottom ends of the two first lifting rods 24 and are respectively inserted into the first limiting holes by first fasteners to limit the axial movement of the fixed rod 23.

[0043] Specifically, the fixed rod 23 further includes a first roller 230, which is sleeved on the fixed rod 23, and / or a fixed block 231 is provided on the fixed rod 23. The transmission assembly 30 is connected to the fixed block 231 to drive the fixed rod 23 to move. In the above configuration, the fixed block 231 is provided with a through hole; one end of the transmission assembly 30 is provided with a smooth rod segment, which is provided with a second limiting hole. The smooth rod segment passes through the through hole to form a clearance fit, and a second fastener passes through the second limiting hole to limit the axial movement of the smooth rod segment; at the same time, the transmission assembly 30 can rotate around the central axis of the through hole. By sleeved the first roller 230 on the fixed rod 23, friction is reduced when the first lifting assembly 20 undergoes mechanical movement. When the first lifting assembly 20 is in the retracted state, the first roller 230 of the fixed rod 23 is brought into contact with the support base 2 by driving the transmission assembly 30. Then, the sliding rod 22 is moved relative to the support base 2 by driving the transmission assembly 30, which in turn causes the fixed plate 10 to descend relative to the support base 2, thereby causing the fan assembly 1 to descend and supporting the first lifting assembly 20.

[0044] In this embodiment, there is at least one first roller 230, and at least one first roller 230 is respectively fitted onto the fixing rod 23 at intervals and located on both sides of the fixing block 231.

[0045] like Figures 2 to 5As shown, the fixing plate 10 includes a main fixing plate body 11 and folding plates 12 located on both sides of the main fixing plate body 11. Each of the two folding plates 12 is provided with a sliding groove 120, and the two ends of the sliding rod 22 are slidably inserted into the corresponding sliding groove 120. In the above configuration, the fixing plate 10 has a symmetrical inverted U-shaped structure, with the downward folded edges on both sides forming the folding plates 12, and each folding plate 12 is also provided with at least one sliding groove 120; the two ends of the sliding rod 22 are provided with through rod segments 221, which are inserted into the sliding grooves 120 and can slide freely, so that when the transmission component 30 drives the fixing rod 23 to move, the sliding rod 22 slides along the sliding groove 120, thereby realizing the movement of the first lifting component 20.

[0046] Specifically, both ends of the sliding rod 22 are provided with through rod segments 221, which pass through corresponding slide grooves 120. The first lifting assembly 20 also includes a locking component 25, which is detachably provided at the end of the through rod segment 221 that extends out of the slide groove 120 to prevent the through rod segment 221 from detaching from the slide groove 120. In the above configuration, the through rod segments 221 at both ends of the sliding rod 22 are provided with third limiting holes. Both ends of the sliding rod 22 pass through the top ends of the two first lifting rods 24 respectively, and are inserted into the third limiting holes by cotter pins to prevent the sliding rod 22 from falling off the first lifting rods 24. Furthermore, the through rod segments 221 at both ends of the sliding rod 22 are inserted into the slide grooves 120, and are respectively connected to the end of the through rod segment 221 that extends out of the slide groove 120 by the locking component 25 to prevent the through rod segment 221 from detaching from the slide groove 120. The sliding rod 22 is slidably configured.

[0047] like Figures 2 to 5 As shown, the transmission assembly 30 includes a rotating rod 31. One end of the rotating rod 31 is rotatably connected to the bottom end of the first lifting assembly 20. The fixed plate 10 is provided with a first through hole 15. The rotating rod 31 has a threaded section that passes through the first through hole 15. With the above configuration, one end of the rotating rod 31 passes through the first through hole 15, and the other end is rotatably connected to the bottom end of the first lifting assembly 20. The rotation of the rotating rod 31 drives the first lifting assembly 20 to move relative to the fixed plate 10. One end of the rotating rod 31 is hexagonal, used for the clamping and driving operation of the socket tool; a cross groove is also provided on the outer end face of the hexagon for the limiting and driving operation of the screwdriver; the other end of the rotating rod 31 is a small-diameter smooth section. This smooth section is fitted with the through hole of the fixed rod 23 to form a clearance fit. The smooth section is provided with a second limiting hole. A second fastener passes through the second limiting hole to prevent the rotating rod 31 from coming out of the through hole, and at the same time, limits the movement of the rotating rod 31 relative to the axis of the fixed rod 23.

[0048] In this embodiment, the lifting device further includes a second lifting component 40. The bottom end of the second lifting component 40 is used to contact the support base 2, and the top end of the second lifting component 40 is rotatably connected to the fixed plate 10 so that when the transmission component 30 drives the bottom end of the first lifting component 20 to move relative to the support base 2, the second lifting component 40 moves synchronously so that the bottom end of the second lifting component 40 moves closer to or away from the bottom end of the first lifting component 20. In the above configuration, the first lifting component 20 and the second lifting component 40 are rotatably connected to both sides of the fixed plate 10, and the transmission component 30 is connected to the first lifting component 20 and the second lifting component 40. When both the first lifting component 20 and the second lifting component 40 are in the retracted state, the rotating rod 31 is driven to rotate, causing the first lifting component 20 and the second lifting component 40 to move relative to the fixed plate 10, and the bottom ends of the first lifting component 20 and the second lifting component 40 are in contact with the support base surface 2. At the same time, the rotating rod 31 is further rotated to move the top ends of the first lifting component 20 and the second lifting component 40 relative to the support base surface 2, so as to drive the fan component 1 to descend relative to the support base surface 2 and support it.

[0049] It can be seen that the second lifting component 40 also has a retracted state where its bottom end is stored in the fixed plate 10 and a supported state where its bottom end is in contact with the supporting base surface 2. When the second lifting component 40 is in the supported state, the transmission component 30 drives the bottom end of the second lifting component 40 to move relative to the supporting base surface 2, so as to realize the lifting of the fixed plate 10 relative to the supporting base surface 2. In the above configuration, the transmission component 30 is rotatably connected to the second lifting component 40. By driving the transmission component 30 to rotate, the first lifting component 20 and the second lifting component 40, which are in the storage state, are moved relative to the fixed plate 10 until the bottom ends of the first lifting component 20 and the second lifting component 40 are in contact with the support base 2 and are in a supported state. Then, by driving the top ends of the first lifting component 20 and the second lifting component 40 to move relative to the support base 2, the fixed plate 10 is lowered relative to the support base 2. At the same time, the fan component 1 is driven to move downward, thereby realizing the lifting and lowering movement of the fan component 1 and the support of the fan component 1 after it is lowered. This solves the problems of difficult lifting and lowering of the fan component 1 and difficult bottom support in the existing air conditioning units.

[0050] Further, the first lifting assembly 20 includes a first lifting frame 21, and the second lifting assembly 40 includes a second lifting frame 41. The first lifting frame 21 and the second lifting frame 41 are rotatably connected; and / or the transmission assembly 30 is drively connected to the second lifting assembly 40 so that when the transmission assembly 30 drives the first lifting assembly 20 to move, it synchronously drives the second lifting assembly 40 to move; and / or the lowest point of the bottom end of the first lifting assembly 20 and the lowest point of the bottom end of the second lifting assembly 40 are located in the same horizontal plane. In the above configuration, the second lifting frame 41 includes two second lifting rods 43, which are rotatably disposed on opposite sides of the fixed plate 10. The two second lifting rods 43 are close to the two first lifting rods 24, and the first lifting rods 24 and the second lifting rods 43 are connected by a connecting rod and limited by a cotter pin. When the first lifting assembly 20 and the second lifting assembly 40 are in the retracted state, the rotating rod 31 is driven to rotate, so that the first lifting assembly 20 and the second lifting assembly 40 move synchronously to their bottom ends and simultaneously contact the supporting base surface 2 for support.

[0051] Specifically, the second lifting assembly 40 includes a second lifting frame 41. The top end of the second lifting frame 41 is rotatably connected to the fixed plate 10, and the bottom end of the second lifting frame 41 is provided with a rotatably disposed movable rod 42, which is used to contact the supporting base surface 2. With the above configuration, when the second lifting assembly 40 is in the retracted state, by driving the rotating rod 31 to rotate, the movable rod 42 of the second lifting frame 41 is driven to contact the supporting base surface 2. Further rotating the rotating rod 31 causes the movable rod 42 to move relative to the supporting base surface 2, thereby driving the fan assembly 1 to descend.

[0052] like Figures 2 to 5 and Figure 11As shown, the second lifting assembly 40 also includes two opposing second lifting rods 43 and a drive rod 44. One end of the drive rod 44 passes through the top end of one of the second lifting rods 43 and is rotatably connected to the fixed plate 10. The other end of the drive rod 44 passes through the top end of the other second lifting rod 43 and is rotatably connected to the fixed plate 10. The two ends of the moving rod 42 are rotatably connected to the bottom ends of the two second lifting rods 43 respectively. The transmission assembly 30 includes a rotating rod 31. The drive rod 44 is provided with a first threaded hole 441. The rotating rod 31 has a threaded rod segment that is threadedly engaged with the first threaded hole 441. In the above configuration, the drive rod 44 includes a main rod segment and support rod segments located at both ends of the main rod segment. The diameter of the main rod segment of the drive rod 44 is larger than the diameter of the support rod segments at both ends. A fourth limiting hole is provided on each of the support rod segments at both ends, and the axis of the fourth limiting hole intersects perpendicularly with the central axis of the drive rod 44. An external threaded section is also provided on the support rod segment between the outer end face of the drive rod 44 and the fourth limiting hole. Sliding holes are also provided on the two folding plates 12 on both sides of the fixing plate 10. The two support rod segments of the drive rod 44 pass through the sliding holes and are fixed to the end of the support rod segment that exits the sliding hole by limiting nuts to fix and limit them, preventing the drive rod 44 from coming out of the sliding holes of the fixing plate 10. By driving the rotating rod 31 to rotate, it causes a threaded pair movement with the first threaded hole 441 of the drive rod 44, resulting in a change in distance between the drive rod 44 and the fixing rod 23, thereby realizing the telescopic movement of the first lifting assembly 20 and the second lifting assembly 40.

[0053] In this embodiment, the movable rod 42 further includes a second roller 421, which is rotatably sleeved on the movable rod 42. With the above arrangement, when the rotating rod 31 drives the second lifting assembly 40 to move relative to the fixed plate 10 until it contacts the support base 2, the second roller 421 contacts the support base 2. Furthermore, when the transmission assembly 30 drives the first lifting assembly 20 and the second lifting assembly 40 to move relative to the support base 2, the first roller 230 and the second roller 421 simultaneously contact the support base 2 and move relatively closer or relatively farther away.

[0054] In this embodiment, there is at least one second roller 421, and at least one second roller 421 is mounted on the moving rod 42 at intervals.

[0055] Specifically, the fixing plate 10 is provided with a clearance opening 13 for at least a portion of the fan assembly 1 to pass through; and / or the fixing plate 10 is provided with a first connecting hole 14, through which the fan assembly 1 is fixedly connected to the fixing plate 10. With the above configuration, the entire fan assembly 1 is moved into the movable opening 510 on the alignment base 51 of the hoisting assembly 50 and placed on the fixing plate 10, while at least a portion of the fan assembly 1 aligns with and passes through the clearance opening 13. The fan assembly 1 is fixed to the fixed plate 10 with fixing bolts, and the fixed plate 10 is fixed to the base 51 with fixing bolts. Therefore, the factory-fixed state of the fan assembly 1 is reliable and effective. After the drive rotating rod 31 is raised to the highest position, the locking nut is screwed in from top to bottom until the locking nut is against the upper surface of the base 51 of the hoisting assembly 50. The rotating rod 31 cannot fall freely under the double fixation of the locking nut and the first threaded hole 441 of the drive rod 44, thereby ensuring that the first lifting assembly 20 and the second lifting assembly 40 can be stably suspended under the base 51 of the hoisting assembly 50.

[0056] like Figure 1 and Figures 6 to 9 As shown, the lifting device also includes a hoisting assembly 50, which includes a base 51, multiple columns 52, and multiple crossbeams 53. The base 51 has a movable opening 510 for a portion of the fan assembly 1 to pass through. The base 51 is provided with multiple fixing holes 511, which are arranged around the movable opening 510. When the first lifting assembly 20 is in the retracted state, the fixing plate 10 is fixedly connected to the base 51 by a first fixing member passing through the fixing plate 10 and the fixing hole 511. After the fan assembly 1 is lowered to a predetermined state, the fan assembly 1 is fixed to the base 51 by a second fixing member passing through the fan assembly 1 and the fixing hole 511. The bottom ends of the multiple columns 52 are all connected to the base 51. The multiple crossbeams 53 are arranged along the circumference of the base 51, and at least one crossbeam 53 is provided between any two adjacent columns 52.

[0057] In the above configuration, multiple columns 52 are vertically mounted on the base 51, and multiple crossbeams 53 are respectively connected to two corresponding columns 52. The mounting beam is positioned between two opposing crossbeams 53 and above the movable opening 510. The fan assembly 1 is mounted on the base 51, which also has a second through hole. One end of the rotating rod 31 passes through the first threaded hole 441, the first through hole 15, and the second through hole of the drive rod 44, and is threaded into the first threaded hole 441. The other end is rotatably connected to the fixed rod 23 of the first lifting assembly 20, so that the rotating rod 31 is driven to rotate, thereby causing a change in the distance between the drive rod 44 and the fixed rod 23, thus realizing the telescopic movement of the first lifting assembly 20 and the second lifting assembly 40. When the first lifting assembly 20 and the second lifting assembly 40 are in the retracted state, the rotating rod 31 is driven to rotate, thereby causing the first lifting assembly 20 and the second lifting assembly 40 to move relative to the fixed plate 10, so that the moving rod 42 and the fixed rod 23 contact the supporting base surface 2, and the first lifting assembly 20 and the second lifting assembly 40 are in the supported state. The rotating rod 31 is further driven to rotate, and the second roller 421 and the first roller 230 of the moving rod 42 and the fixed rod 23 move relatively away from or relatively close to each other, so as to realize the downward movement of the fan assembly 1. At the same time, the first lifting assembly 20 and the second lifting assembly 40 support it.

[0058] According to another aspect of the present invention, an air conditioning unit is provided, including a fan assembly 1, and a lifting device as described above, wherein the fan assembly 1 is mounted on the lifting device.

[0059] Specifically, the fan assembly 1 includes a centrifugal fan 3, an upper mounting plate 4, a lower mounting plate 5, and multiple fixing columns 6. The lower mounting plate is connected to the centrifugal fan 3, and the two ends of the multiple fixing columns 6 are respectively connected to the upper mounting plate 4 and the lower mounting plate 5. The outer peripheral surface of the upper mounting plate 4 protrudes from the outer peripheral surface of the lower mounting plate 5, so that after the fan assembly 1 is lowered to a predetermined state, the fan assembly 1 is fixed to the hoisting assembly 50 by fixing components that pass through the fan assembly 1 and the hoisting assembly 50.

[0060] In the above configuration, the upper mounting plate 4 is a fixed guide ring, and the centrifugal fan 3 is fixed to the lower mounting plate 5 by a motor. There is a reasonable gap between the upper mounting plate 4 and the centrifugal fan 3 to avoid collision. The lower mounting plate 5 of the fan assembly 1 is also provided with multiple second connecting holes, which are arranged at intervals along the circumferential direction of the lower mounting plate 5 and correspond one-to-one with multiple first connecting holes 14 on the fixed plate 10. Fasteners are correspondingly inserted into the second connecting holes and the first connecting holes 14 to fix the fan assembly 1 to the fixed plate 10. After the fan assembly 1 completes its descent, the first lifting assembly 20 and the second lifting assembly 40 support it. The upper mounting plate 4 of the fan assembly 1 contacts the base 51, indicating that the descent of the fan assembly 1 has been completed. The upper mounting plate 4 is provided with multiple third connecting holes, which correspond one-to-one with the multiple fixing holes 511 on the base 51. Fixing components pass through the corresponding third connecting holes and fixing holes 511 to fix them in place. Then, the rotating rod 31 is rotated slightly in the opposite direction, causing the first lifting assembly 20 and the second lifting assembly 40 to retract slightly and move closer together, strengthening the supporting effect of the first lifting assembly 20 and the second lifting assembly 40. Then, the locking nut is screwed into the rotating rod 31 again and tightened against the base 51 of the hoisting assembly 50 to strengthen the fixed state of the transmission assembly 30.

[0061] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0062] A lifting device is connected to the fan assembly and is used to drive the fan assembly of the air conditioning unit to move up and down. The lifting device includes a fixed plate, a first lifting component, and a transmission component. The fixed plate supports the fan assembly. The bottom end of the first lifting component is used to contact the supporting base surface. The first lifting component is slidably connected to the fixed plate so that when the bottom end of the first lifting component contacts the supporting base surface, the fixed plate is movable relative to the supporting base surface. The transmission component is driven by the first lifting component so that when the bottom end of the first lifting component contacts the supporting base surface, the top end of the first lifting component moves relative to the supporting base surface, thereby causing the fixed plate to move up and down relative to the supporting base surface, thus realizing the lifting movement of the fan assembly. The bottom end of the second lifting component is used to contact the supporting base surface, and the top end of the second lifting component is rotatably connected to the fixed plate so that when the transmission component moves the top end of the first lifting component relative to the supporting base surface, the second lifting component moves synchronously, so that the bottom end of the second lifting component is relatively closer to or relatively farther away from the bottom end of the first lifting component. In the above configuration, the fixed plate is connected to the fan assembly and supports the fan assembly, driving its lifting and lowering movement. The first and second lifting components are movably connected to the fixed plate. A drive transmission assembly rotates the top ends of the first and second lifting components relative to the fixed plate, causing their bottom ends to contact the support base. Further, the drive transmission assembly moves the top ends of the first and second lifting components relative to the support base, thereby causing the fixed plate to descend relative to the support base, thus lowering the fan assembly. Simultaneously, the first and second lifting components support the fan assembly during descent. This configuration achieves both the lifting and lowering of the fan assembly and the support provided after descent, strengthening the vertical support of the fan assembly, reducing the load on the cabinet base, and improving the overall operational reliability, especially for the centrifugal fan. This solves the problems of difficult lifting and lowering of the fan assembly and difficult bottom support in existing air conditioning units.

[0063] 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.

[0064] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0065] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0066] 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.

[0067] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0068] 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 lifting device for driving the fan assembly (1) of an air conditioning unit to move up and down, characterized in that, The lifting device includes: A fixing plate (10) is used to support the fan assembly (1); The first lifting component (20) has its bottom end used to contact the support base surface (2). The first lifting component (20) is slidably connected to the fixed plate (10) so that when the bottom end of the first lifting component (20) contacts the support base surface (2), the fixed plate (10) is movably disposed relative to the support base surface (2). The transmission assembly (30) is connected to the first lifting assembly (20) so that when the bottom end of the first lifting assembly (20) contacts the support base (2), the transmission assembly (30) drives the top end of the first lifting assembly (20) to move relative to the support base (2), so that the fixed plate (10) moves up and down relative to the support base (2), thereby realizing the lifting movement of the fan assembly (1); The hoisting assembly (50) includes a base (51) having a movable opening (510) for a portion of the fan assembly (1) to pass through and a second through hole. The transmission assembly (30) includes a rotating rod (31), one end of which is rotatably connected to the bottom end of the first lifting assembly (20). The fixed plate (10) is provided with a first through hole (15), and the rotating rod (31) has a threaded rod segment passing through the first through hole (15). The fixing plate (10) is located on the side of the base (51) close to the supporting base surface (2), and the threaded rod segment of the rotating rod (31) passes through the first through hole (15) and the second through hole and is connected to the base (51). The first lifting component (20) has a retracted state where its bottom end is retracted to the fixed plate (10) and a supported state where its bottom end is in contact with the supporting base surface (2). When the first lifting component (20) is in the supported state, the transmission component (30) drives the top end of the first lifting component (20) to move relative to the supporting base surface (2) so as to realize the lifting of the fixed plate (10) relative to the supporting base surface (2).

2. The lifting device according to claim 1, characterized in that, The first lifting assembly (20) includes a first lifting frame (21), the top of the first lifting frame (21) is provided with a sliding rod (22), the sliding rod (22) is slidably connected to the fixed plate (10); the bottom of the first lifting assembly (20) is provided with a fixed rod (23), the fixed rod (23) is used to contact the support base (2).

3. The lifting device according to claim 2, characterized in that, The first lifting frame (21) includes two opposing first lifting rods (24). One end of the sliding rod (22) passes through the top of one of the first lifting rods (24) and is slidably connected to the fixed plate (10). The other end of the sliding rod (22) passes through the top of the other first lifting rod (24) and is slidably connected to the fixed plate (10). The two ends of the fixed rod (23) are respectively connected to the bottom ends of the two first lifting rods (24).

4. The lifting device according to claim 2, characterized in that, The fixing rod (23) further includes a first roller (230), which is sleeved on the fixing rod (23), and / or A fixing block (231) is provided on the fixing rod (23), and the transmission component (30) is connected to the fixing block (231) to drive the fixing rod (23) to move.

5. The lifting device according to claim 2, characterized in that, The fixing plate (10) includes a main fixing plate body (11) and folding plates (12) located on both sides of the main fixing plate body (11). Each of the two folding plates (12) is provided with a sliding groove (120), and the two ends of the sliding rod (22) are slidably inserted into the corresponding sliding groove (120).

6. The lifting device according to claim 5, characterized in that, Both ends of the sliding rod (22) are provided with through rod segments (221), which pass through the corresponding slide groove (120). The first lifting assembly (20) also includes a locking component (25), which is detachably provided at one end of the through rod segment (221) that passes through the slide groove (120) to prevent the through rod segment (221) from disengaging from the slide groove (120).

7. The lifting device according to claim 1, characterized in that, The lifting device further includes a second lifting component (40), the bottom end of which is used to contact the support base (2), and the top end of which is rotatably connected to the fixed plate (10) so that when the transmission component (30) drives the top end of the first lifting component (20) to move relative to the support base (2), the second lifting component (40) moves synchronously so that the bottom end of the second lifting component (40) moves closer to or further away from the bottom end of the first lifting component (20).

8. The lifting device according to claim 7, characterized in that, The first lifting assembly (20) includes a first lifting frame (21), and the second lifting assembly (40) includes a second lifting frame (41), wherein the first lifting frame (21) and the second lifting frame (41) are rotatably connected; and / or The transmission assembly (30) is connected to the second lifting assembly (40) so that when the transmission assembly (30) drives the first lifting assembly (20) to move, it simultaneously drives the second lifting assembly (40) to move; and / or The lowest point of the bottom end of the first lifting component (20) and the lowest point of the bottom end of the second lifting component (40) are located in the same horizontal plane.

9. The lifting device according to claim 7, characterized in that, The second lifting assembly (40) includes: The second lifting frame (41) has its top end rotatably connected to the fixed plate (10), and its bottom end is provided with a rotatably mounted moving rod (42) for contacting the support base (2).

10. The lifting device according to claim 9, characterized in that, The second lifting frame (41) includes two opposing second lifting rods (43) and a drive rod (44). One end of the drive rod (44) passes through the top of one of the second lifting rods (43) and is rotatably connected to the fixed plate (10). The other end of the drive rod (44) passes through the top of the other second lifting rod (43) and is rotatably connected to the fixed plate (10). The two ends of the moving rod (42) are rotatably connected to the bottom ends of the two second lifting rods (43) respectively. The drive rod (44) is provided with a first threaded hole (441), and the rotating rod (31) has a threaded rod segment that is threadedly engaged with the first threaded hole (441).

11. The lifting device according to claim 10, characterized in that, The movable rod (42) also includes a second roller (421), which is rotatably mounted on the movable rod (42).

12. The lifting device according to claim 11, characterized in that, The fixing plate (10) is provided with a clearance opening (13) for at least a portion of the fan assembly (1) to pass through; and / or The fixing plate (10) is provided with a first connection hole (14), and the fan assembly (1) is fixedly connected to the fixing plate (10) through the first connection hole (14).

13. The lifting device according to claim 12, characterized in that, The base (51) is provided with a plurality of fixing holes (511), which surround the movable opening (510) so that when the first lifting assembly (20) is in the storage state, the fixing plate (10) and the base (51) are fixedly connected by a first fixing member passing through the fixing plate (10) and the fixing hole (511); after the fan assembly (1) descends to the predetermined state, the fan assembly (1) is fixed on the base (51) by a second fixing member passing through the fan assembly (1) and the fixing hole (511); Multiple columns (52), the bottom ends of which are connected to the base (51); Multiple crossbeams (53) are provided along the circumference of the base (51), and at least one crossbeam (53) is provided between any two adjacent columns (52).

14. An air conditioning unit, comprising a fan assembly (1) and a lifting device, characterized in that, The lifting device is the lifting device according to any one of claims 1 to 13, and the fan assembly (1) is installed on the lifting device.

15. The air conditioning unit according to claim 14, characterized in that, The fan assembly (1) includes a centrifugal fan (3), an upper mounting plate (4), a lower mounting plate (5), and a plurality of fixed columns (6). The lower mounting plate (5) is connected to the centrifugal fan (3), and the two ends of the plurality of fixed columns (6) are respectively connected to the upper mounting plate (4) and the lower mounting plate (5). The outer peripheral surface of the upper mounting plate (4) protrudes from the outer peripheral surface of the lower mounting plate (5).

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