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 lifting assembly rotatably connected with the fixed plate, a bottom end of the lifting assembly used for contacting a supporting base surface; and a transmission assembly connected with the lifting assembly to drive the lifting assembly to rotate relative to the fixed plate, so that the bottom end of the lifting assembly moves relative to the supporting base surface, and the fixed plate is lifted relative to the supporting base surface to drive the fan assembly to perform lifting movement. The fan assembly is lifted by the lifting device and supported after descending, so that the problems of difficult lifting and difficult bottom supporting of the fan assembly in the air conditioning unit in the prior art are solved.

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, in downflow precision data center air conditioning units, the fan assembly is housed within a cabinet, including a centrifugal fan and a mounting plate assembly connected to it. The bottom center of the mounting plate assembly is rotatably connected to a base, allowing the centrifugal fan to rotate 180 degrees from inside the cabinet to outside through an opening. 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 bulky centrifugal fan back upwards during maintenance and replacement, hindering the replacement operation for after-sales personnel.

[0003] However, when maintaining or replacing centrifugal fans, it's difficult to flip the heavy centrifugal fan back up, making replacement inconvenient for after-sales personnel. Furthermore, these structures typically use a cuboid configuration to secure the circular centrifugal fan, resulting in a bulky structure, excessive cabinet space usage, and hindering fan lowering. Additionally, the fixing and lifting mechanisms are two independent sets of equipment requiring a fixed connection, leading to numerous components and a complex structure. Existing fan lowering technologies do not address the issue of bottom support after fan lowering; 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. 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 lifting assembly rotatably connected to the fixed plate, the bottom end of the lifting assembly being used to contact a supporting base surface; and a transmission assembly connected to the lifting assembly to drive the lifting assembly to rotate relative to the fixed plate, thereby moving the bottom end of the lifting assembly relative to the supporting base surface, and causing the fixed plate to move up and down relative to the supporting base surface, thereby driving the fan assembly to move up and down.

[0006] Furthermore, the lifting assembly 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 lifting assembly is in the supported state, the transmission assembly drives the bottom end of the lifting assembly to move relative to the supporting base surface, so that the fixed plate moves up and down relative to the supporting base surface.

[0007] Furthermore, the lifting assembly includes two opposing movable parts, each of which is rotatably connected to the fixed plate, and the bottom end of each movable part is used to connect to the support base surface; the transmission assembly is connected to the two movable parts respectively, so as to make the bottom ends of the two movable parts relatively close or relatively far apart.

[0008] Furthermore, each movable component includes: a lifting frame, the top of which is rotatably connected to a fixed plate, and a movable rod at the bottom of the lifting frame for contacting the supporting base surface.

[0009] Furthermore, the lifting frame also includes two opposing lifting rods, the top ends of which are rotatably connected to the fixed plate; the two ends of the movable rod are respectively connected to the bottom ends of the two lifting rods.

[0010] Furthermore, a first fixing member and a second fixing member are respectively provided on the two movable rods, and the transmission assembly includes a rotating component, which is connected to the first fixing member and the second fixing member respectively, so as to drive the bottom ends of the two lifting rods to move closer to each other or further away from each other.

[0011] Furthermore, the first fixing member and the second fixing member are respectively provided with a first threaded hole and a second threaded hole; the rotating component includes a first threaded segment and a second threaded segment, the first threaded segment is threadedly engaged with the first threaded hole, and the second threaded segment is threadedly engaged with the second threaded hole; wherein, the thread directions of the first threaded segment and the second threaded segment are opposite.

[0012] Furthermore, the transmission assembly also includes a drive component having a worm segment and a rotating component having a turbine segment, the worm segment and the turbine segment meshing to drive the rotating component to rotate via the drive component; wherein the axis of the worm segment extends in the vertical direction.

[0013] Furthermore, the drive component includes a screw section, a worm section disposed at the bottom of the screw section, and a first through hole threadedly engaged with the screw section on the fixed plate; and / or the transmission component also includes a connecting component, which has a first limiting hole and a first limiting groove, the worm section passing through the first limiting hole, the first limiting hole communicating with the first limiting groove, so as to limit the axial movement between the worm section and the connecting component by a first fastener passing through the first limiting groove and on the worm section; the connecting component also has a second limiting hole and a second limiting groove, the turbine section passing through the second limiting hole, the second limiting hole communicating with the second limiting groove, so as to limit the axial movement between the turbine section and the connecting component by a second fastener passing through the second limiting groove and on the turbine section.

[0014] Furthermore, each movable component also includes a roller, which is rotatably mounted on the moving rod; and / or the fixed plate includes a main fixed plate body and folding plates located on both sides of the main fixed plate body, with the top of the lifting frame rotatably connected to both folding plates.

[0015] Furthermore, the fixing plate is provided with a clearance opening for 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.

[0016] Furthermore, the lifting device also includes a hoisting assembly, which includes: a base having a movable opening for a portion of the fan assembly to pass through, and multiple fixing holes arranged around the movable opening to fix a fixing plate to the base when the lifting assembly is in a retracted state by means of a first fixing member passing through the first connecting hole and the fixing hole; and after the fan assembly descends to a predetermined state, to fix the fan assembly to the base by means of a second fixing member passing through the fan assembly and the fixing hole; multiple columns, the bottom ends of which are all connected to the base; and multiple crossbeams, with at least one crossbeam provided between any two adjacent columns along the circumference of the base.

[0017] 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.

[0018] 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.

[0019] Applying the technical solution of this invention, the lifting device is connected to the fan assembly, driving the fan assembly of the air conditioning unit to move up and down. The lifting device includes a fixed plate for supporting the fan assembly; the lifting device also includes a lifting component and a transmission component. The lifting component is rotatably connected to the fixed plate, and the bottom end of the lifting component is used to contact the supporting base surface; the transmission component is connected to the lifting component to drive the lifting component to rotate relative to the fixed plate, so that the bottom end of the lifting component moves relative to the supporting base surface, so that the fixed plate moves up and down relative to the supporting base surface, thereby driving the fan assembly to move up and down. In the above configuration, the fixed plate is connected to the fan assembly and supports the fan assembly for lifting and lowering. The lifting assembly is movably connected to the fixed plate. By driving the transmission assembly, the lifting assembly rotates relative to the fixed plate, causing the fixed plate to rise and fall relative to the supporting base, thereby driving the fan assembly to rise and fall. At the same time, when the fan assembly descends, the bottom end of the lifting assembly contacts the supporting base and moves relative to the supporting base, thus realizing the lifting and lowering of the fan assembly and providing support for the fan assembly after it descends. This strengthens the vertical support strength of the fan assembly, reduces the load on the cabinet base, and improves the operational reliability of the entire unit, especially 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

[0020] 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:

[0021] Figure 1 A structural schematic diagram of an embodiment of the lifting device and fan assembly according to the present invention is shown;

[0022] Figure 2 A first-view structural schematic diagram of an embodiment of the lifting assembly and transmission assembly according to the present invention is shown;

[0023] Figure 3 A second-view structural schematic diagram of an embodiment of the lifting assembly and transmission assembly according to the present invention is shown;

[0024] Figure 4 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;

[0025] Figure 5 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;

[0026] Figure 6 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.

[0027] Figure 7 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.

[0028] Figure 8 A schematic diagram of the structure of a rotating component according to an embodiment of the transmission assembly of the present invention is shown;

[0029] Figure 9 A schematic diagram of the structure of a drive component according to an embodiment of the transmission assembly of the present invention is shown;

[0030] Figure 10 A schematic diagram of the moving rod according to an embodiment of the lifting assembly of the present invention is shown;

[0031] Figure 11 A schematic diagram of the structure of a connecting component according to an embodiment of the transmission assembly of the present invention is shown.

[0032] The above figures include the following reference numerals:

[0033] 1. Fan assembly; 2. Support base; 3. Clearance opening; 4. Centrifugal fan; 5. Upper mounting plate; 6. Lower mounting plate; 7. Fixing column; 10. Fixing plate; 11. Main fixing plate body; 12. Folding plate; 13. First connecting hole; 14. First through hole; 20. Lifting assembly; 21. Moving part; 22. Lifting frame; 23. Lifting rod; 24. Moving rod; 241. First fixing member; 2410. First threaded hole; 242. Second fixing member; 2420. Second threaded hole 25. Hole; 30. Roller; 31. Transmission assembly; 31. Rotating component; 310. First threaded section; 311. Second threaded section; 312. Turbine section; 32. Connecting component; 320. First limiting hole; 321. First limiting groove; 322. Second limiting hole; 323. Second limiting groove; 33. Drive component; 331. Worm section; 332. Screw section; 40. Lifting assembly; 41. Base; 410. Moving opening; 411. Fixing hole; 42. Column; 43. Crossbeam. Detailed Implementation

[0034] 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.

[0035] like Figures 1 to 11As 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 lifting component 20, and a transmission component 30. The fixed plate 10 is used to support the fan assembly 1. The lifting component 20 is rotatably connected to the fixed plate 10, and the bottom end of the lifting component 20 is used to contact the supporting base surface 2. The transmission component 30 is connected to the lifting component 20 to drive the lifting component 20 to rotate relative to the fixed plate 10, so that the bottom end of the lifting component 20 moves relative to the supporting base surface 2, so that the fixed plate 10 moves up and down relative to the supporting base surface 2, thereby driving the fan assembly 1 to move up and down.

[0036] Applying the technical solution of this embodiment, the fixed plate 10 is connected to the fan assembly 1 and carries the fan assembly 1 to perform lifting and lowering movements. The lifting assembly 20 is movably connected to the fixed plate 10. By driving the transmission assembly 30, the lifting assembly 20 is driven to rotate relative to the fixed plate 10, so that the fixed plate 10 is lifted and lowered relative to the support base 2, thereby driving the fan assembly 1 to perform lifting and lowering movements. At the same time, when the fan assembly 1 descends, the bottom end of the lifting assembly 20 contacts the support base 2 and moves relative to the support base 2, so as to realize the lifting and lowering movements of the fan assembly 1 and support the fan assembly 1 after it descends. This strengthens the vertical support strength of the fan assembly 1, reduces the load on the cabinet base 41, and improves the operational reliability of the whole unit, especially the centrifugal fan 4. Thus, it solves the problems of difficult lifting and lowering of the fan assembly 1 and difficult bottom support in the air conditioning unit in the prior art.

[0037] like Figures 4 to 7 As shown, the lifting assembly 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 lifting assembly 20 is in the supported state, the transmission assembly 30 drives the bottom end of the lifting assembly 20 to move relative to the supporting base 2, so that the fixed plate 10 rises and falls relative to the supporting base 2. In the above configuration, one end of the transmission assembly 30 is rotatably connected to the lifting assembly 20, and the other end is rotatably connected to the fixed plate 10. By driving the transmission assembly 30 to rotate, the lifting assembly 20 in the retracted state is driven to move relative to the supporting base 2 until the bottom end of the lifting assembly 20 contacts the supporting base 2 and is in the supported state. Then, by driving the bottom end of the lifting assembly 20 to move relative to the supporting base 2, the fixed plate 10 rises and falls relative to the supporting base 2, thereby driving the fan assembly 1 to descend. This realizes the lifting and lowering movement of the fan assembly 1 and the support of the fan assembly 1 after it descends, solving the problems of difficult lifting and lowering of the fan assembly 1 and difficult bottom support in the existing air conditioning units.

[0038] like Figures 2 to 7As shown, the lifting assembly 20 includes two opposing movable parts 21, each rotatably connected to the fixed plate 10, with the bottom end of each movable part 21 connected to the supporting base 2. A transmission assembly 30 is connected to each of the two movable parts 21, allowing the bottom ends of the two movable parts 21 to move closer or further apart. In this configuration, when the lifting assembly 20 is in the retracted state, both movable parts 21 are connected to the transmission assembly 30. By driving the transmission assembly 30 to rotate, the two movable parts 21 move relatively away from each other, causing the bottom end of the lifting assembly 20 to contact the supporting base 2. At this time, the lifting assembly 20 is in a supported state. Then, by driving the transmission assembly 30 to move the two movable parts 21 relatively closer, the fixed plate 10 descends relative to the supporting base 2, thereby lowering the fan assembly 1 to a predetermined position, while the lifting assembly 20 supports it.

[0039] like Figure 2 and Figure 3 As shown, each movable component 21 includes a lifting frame 22, the top of which is rotatably connected to the fixed plate 10, and a moving rod 24 is provided at the bottom of the lifting frame 22 for contacting the support base 2. In this configuration, the transmission assembly 30 is connected to the two moving rods 24 of the two lifting frames 22 respectively. When the lifting assembly 20 is in the retracted state, the transmission assembly 30 is driven to rotate, causing the two moving rods 24 to move relatively away from each other until they contact the support base 2. Then, the transmission assembly 30 is driven to rotate again, causing the two moving rods 24 to move relatively closer to the support base 2. At this time, the fan assembly 1 descends under the support of the fixed plate 10.

[0040] In this embodiment, the lifting frame 22 further includes two opposing lifting rods 23, the top ends of which are rotatably connected to the fixed plate 10; the two ends of the moving rod 24 are connected to the bottom ends of the two lifting rods 23. In this configuration, the moving rod 24 consists of a small-diameter rod and a medium-diameter rod. A limiting hole is provided on the small-diameter rod, and the two ends of the small-diameter rod pass through the bottom ends of the two lifting rods 23 respectively. Cotter pins pass through the limiting holes to allow the moving rod 24 to be movably connected to the two lifting rods 23. One end of each of the two lifting rods 23 is rotatably connected to the fixed plate 10, and the other end is movably connected to the moving rod 24. A transmission assembly 30 is connected to each of the two lifting rods 23. By driving the transmission assembly 30 to rotate, the two lifting frames 22 move relatively away from or relatively close to the fixed plate 10.

[0041] Furthermore, a first fixing member 241 and a second fixing member 242 are respectively provided on the two movable rods 24. The transmission assembly 30 includes a rotating component 31, which is transmittedly connected to the first fixing member 241 and the second fixing member 242, so as to drive the top ends of the two lifting rods 23 to move closer or further apart from each other. In this embodiment, the rotating component 31 is a double-ended bolt, and its two ends are transmittedly connected to the first fixing member 241 and the second fixing member 242, respectively. By rotating the rotating component 31, the first fixing member 241 and the second fixing member 242 move relatively away from or relatively closer to the rotating component 31, so as to realize the relative movement of the lifting assembly 20.

[0042] Specifically, the first fixing member 241 and the second fixing member 242 are respectively provided with a first threaded hole 2410 and a second threaded hole 2420; the rotating member 31 includes a first threaded section 310 and a second threaded section 311, the first threaded section 310 is threadedly engaged with the first threaded hole 2410, and the second threaded section 311 is threadedly engaged with the second threaded hole 2420; wherein, the thread directions of the first threaded section 310 and the second threaded section 311 are opposite. In the above configuration, the only difference between the first fixing member 241 and the second fixing member 242 is that the thread directions of the first threaded hole 2410 and the second threaded hole 2420 are different. The internal thread of the first threaded hole 2410 is one of a left-hand thread and a right-hand thread, and the internal thread of the second threaded hole 2420 is the other of a left-hand thread and a right-hand thread. The left-hand thread and the right-hand thread have the same thread specifications and the same total thread length. At the same time, the first threaded segment 310 and the second threaded segment 311 of the rotating component 31 are threadedly engaged with the first threaded hole 2410 and the second threaded hole 2420, so that when the rotating component 31 rotates, the first fixing member 241 and the second fixing member 242 move relatively closer or relatively farther away along the axial direction of the rotating component 31, thereby causing the two moving rods 24 to move relative to each other, so as to realize the movement of the lifting assembly 20 relative to the fixed plate 10. The first fixing member 241 and the second fixing member 242 of the two moving rods 24 pass through the first threaded hole 2410 and the second threaded hole 2420. The central axes of the first threaded hole 2410 and the second threaded hole 2420 intersect perpendicularly with the central axis of the moving rod 24. The first threaded section 310 and the second threaded section 311 of the rotating component 31 are screwed into the first threaded hole 2410 and the second threaded hole 2420 respectively, ensuring that the screwing depth of the two moving rods 24 is the same, ensuring that the two moving rods 24 are on the same horizontal plane, and ensuring that the distance between the same side end face of the two moving rods 24 and the rotating component 31 is the same.

[0043] like Figure 2 and Figure 3As shown, the transmission assembly 30 further includes a driving component 33, which has a worm section 331, and a rotating component 31 has a turbine section 312. The worm section 331 and the turbine section 312 mesh with each other to drive the rotating component 31 to rotate via the driving component 33. The axis of the worm section 331 extends vertically. In the above configuration, the turbine section 312 is located at one end of the first threaded section 310 or the second threaded section 311. A first smooth rod section is provided between the turbine section 312 and the first threaded section 310 or the second threaded section 311. The diameter of the circle containing the root of the left-hand thread and the right-hand thread is not less than the outer diameter of the first smooth rod section, and the outer diameter of the first smooth rod section is not less than the diameter of the circle containing the tooth tip of the turbine section 312. By driving the worm section 331, the meshing turbine section 312 is driven to rotate, thereby driving the two moving rods 24 to move relative to each other, so as to realize the movement of the lifting assembly 20 relative to the fixed plate 10. By rotating the screw section 332 of the drive component 33, the turbine section 312 in the connecting component drives the first threaded section 310 and the second threaded section 311 of the rotating component 31 to rotate. At this time, the two moving rods 24 move towards each other. At the same time, the lifting component 20 begins to retract downward, and the lifting rod 23 rotates and descends, causing the fixed plate 10 and part of the fan component 1 fixed on it to sink through the moving opening 410.

[0044] Furthermore, the drive component 33 also includes a screw section 332, a worm section 331 disposed at the bottom of the screw section 332, and a first through hole 14 on the fixing plate 10 that mates with the screw section 332; and / or the transmission assembly 30 also includes a connecting component 32, which has a first limiting hole 320 and a first limiting groove 321. The worm section 331 passes through the first limiting hole 320, which communicates with the first limiting groove 321, so that the worm section 331 can pass through the first limiting hole 320. The first fastener in the slot 321 and on the worm section 331 limits the axial movement between the worm section 331 and the connecting member 32; the connecting member 32 is provided with a second limiting hole 322 and a second limiting groove 323, the turbine section 312 passes through the second limiting hole 322, and the second limiting hole 322 communicates with the second limiting groove 323 so that the axial movement between the turbine section 312 and the connecting member 32 is limited by the second fastener passing through the second limiting groove 323 and on the turbine section 312.

[0045] In the above configuration, the rotating component 31 is further provided with a third limiting hole, which is located on the first smooth rod segment. A second smooth rod segment is also provided between the worm segment 331 and the screw segment 332. The driving component 33 is further provided with a fourth limiting hole, which is located on the second smooth rod segment. The diameter of the circle containing the tooth tip of the worm segment 331 and the diameter of the circle containing the tooth tip of the screw segment 332 are not greater than the outer diameter of the second smooth rod segment. Preferably, the diameter of the circle containing the tooth tip of the worm segment 331, the diameter of the circle containing the tooth tip of the screw segment 332, and the outer diameter of the second smooth rod segment are all equal. The axial movement of the turbine section 312 and the worm section 331 is limited by passing the worm section 331 of the driving component 33 and the turbine section 312 of the rotating component 31 through the first limiting hole 320 and the second limiting hole 322 of the connecting component 32, respectively. The first fastener and the second fastener are respectively passed through the first limiting groove 321 and the second limiting groove 323 in the fourth limiting hole of the driving component 33 and the third limiting hole of the rotating component 31. An operating part is also provided at the top of the screw section 332. The operating part is an external hexagonal nut, and a cross groove is provided on the outer end face of the external hexagonal nut. The diagonal length of the external hexagon is not greater than the diameter of the circle containing the root of the screw section 332. By controlling the rotation direction of the operating part, the screw section 332 moves up and down along the first through hole 14 that it mates with, and at the same time, it drives the turbine section 312 that it is connected to rotate, thereby causing the first threaded section 310 and the second threaded section 311 to rotate so as to drive the two moving rods 24 to move relative to each other, thereby realizing the movement of the lifting assembly 20 relatively away from or relatively close to each other.

[0046] In this embodiment, the connecting component 32 has a cubic structure. The first limiting hole 320 and the second limiting groove 323 are located on the same plane. The second limiting hole 322 is located on the first adjacent plane perpendicular to it, and the first limiting groove 321 is located on the second adjacent plane perpendicular to it. There is an overlapping part between the perpendicularly intersecting first limiting hole 320 and second limiting hole 322, which is used for the connection and transmission of the worm section 331 and the turbine section 312.

[0047] In the first embodiment of the technical solution of the present invention, the connecting component 32 is a cubic structure, and a first limiting hole 320 and a first limiting groove 321 or a second limiting hole 322 and a second limiting groove 323 are respectively provided on two adjacent planes; there is an overlapping part between the perpendicularly intersecting first limiting hole 320 and second limiting hole 322, which is used for connecting and transmitting the worm section 331 and the turbine section 312.

[0048] Furthermore, each movable component 21 also includes a roller 25, which is rotatably mounted on the moving rod 24; and / or the fixed plate 10 includes a main fixed plate 11 and folding plates 12 located on both sides of the main fixed plate 11, with the top of the lifting frame 22 rotatably connected to both folding plates 12. With the above arrangement, the tops of the two lifting rods 23 are rotatably connected to the folding plates 12 on both sides, so that when the transmission assembly 30 drives the two movable components 21 to move relative to each other, the two lifting rods 23 move relative to the fixed plate 10. Simultaneously, the roller 25 located on the moving rod 24 contacts the supporting base 2 and moves relative to the supporting base 2.

[0049] Specifically, the fixing plate 10 is provided with a clearance opening 3 for the fan assembly 1 to pass through; and / or the fixing plate 10 is provided with a first connecting hole 13, through which the fan assembly 1 is fixedly connected to the fixing plate 10. With the above configuration, the fan assembly 1 is moved entirely into the movable opening 410 on the alignment base 41 of the hoisting assembly 40 and placed on the fixing plate 10. At the same time, at least a portion of the fan assembly 1 aligns with and passes through the clearance opening 3. The fan assembly 1 is fixed to the fixed plate 10 with fixing bolts, and the fixed plate 10 is fixed to the base 41 with fixing bolts. Therefore, the factory-fixed state of the fan assembly 1 is reliable and effective. After the worm section 331 of the drive component 33 rises 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 41 of the hoisting component 40. Under the double fixation of the locking nut and the connecting component 32, the worm section 331 cannot fall freely, thereby ensuring that the lifting component 20 can be stably suspended under the base 41 of the hoisting component 40.

[0050] like Figure 1 and Figures 4 to 7 As shown, the lifting device also includes a hoisting assembly 40, which includes: a base 41 having a movable opening 410 for a portion of the fan assembly 1 to pass through; a plurality of fixing holes 411 arranged around the movable opening 410 to fix the fixing plate 10 to the base 41 when the lifting assembly 20 is in the retracted state, by means of a first fixing member passing through the first connecting hole 13 and the fixing hole 411; after the fan assembly 1 is lowered to a predetermined state, the fan assembly 1 is fixed to the base 41 by means of a second fixing member passing through the fan assembly 1 and the fixing hole 411; a plurality of columns 42, the bottom ends of which are all connected to the base 41; and a plurality of crossbeams 43, with at least one crossbeam 43 provided between any two adjacent columns 42 along the circumference of the base 41.

[0051] In the above configuration, multiple columns 42 are vertically mounted on the base 41, and multiple crossbeams 43 connect adjacent columns 42. A mounting beam is positioned between two crossbeams 43 and above the movable opening 410. The fan assembly 1 is mounted on the base 41, which also has a second through hole. The screw section 332 of the drive component 33 passes through the first through hole 14 and the second through hole, respectively, and cooperates with them to drive the drive component 33 to rotate, thereby rotating the turbine section 312 meshing with the worm section 331. This, in turn, causes the first fixing member 241 and the second fixing member 242 to move the two moving rods 24 relatively away from or relatively close to each other, thus enabling the lifting assembly 20 to move relative to the supporting base 2 and causing the fan assembly 1 connected to the fixed plate 10 to descend. Simultaneously, the lifting assembly 20 supports the fan assembly 1.

[0052] In a second 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.

[0053] Furthermore, the fan assembly 1 includes a centrifugal fan 4, an upper mounting plate 5, a lower mounting plate 6, and multiple fixing columns 7. The lower mounting plate 6 is connected to the centrifugal fan 4, and the two ends of the multiple fixing columns 7 are respectively connected to the upper mounting plate 5 and the lower mounting plate 6. The outer peripheral surface of the upper mounting plate 5 protrudes from the outer peripheral surface of the lower mounting plate 6, so that after the fan assembly 1 is lowered to a predetermined state, the fan assembly 1 is fixed to the hoisting assembly 40 by fixing components that pass through the fan assembly 1 and the hoisting assembly 40.

[0054] In the above configuration, the upper mounting plate 5 is a fixed guide ring, and the centrifugal fan 4 is fixed to the lower mounting plate 6 by a motor. There is a reasonable gap between the upper mounting plate 5 and the centrifugal fan 4 to avoid collision. The lower mounting plate 6 of the fan assembly 1 is provided with multiple second connection holes, which are arranged at intervals along the circumferential direction of the lower mounting plate 6 and correspond one-to-one with multiple first connection holes 13 on the fixed plate 10. Third fasteners are inserted into the first connection holes 13 and the second connection holes respectively to fix the fan assembly 1 to the fixed plate 10. After the fan assembly 1 completes its descent, the lifting assembly 20 supports it. The upper mounting plate 5 of the fan assembly 1 contacts the base 41, indicating that the descent of the fan assembly 1 is complete. The upper mounting plate 5 is provided with multiple third connection holes, which correspond one-to-one with the multiple fixing holes 411 on the base 41. The fourth fastener passes through the corresponding third connection holes and fixing holes 411 to fix them in place. Then, the drive component 33 is rotated slightly in the opposite direction to slightly unfold the lifting assembly 20, thereby strengthening the supporting effect of the lifting assembly 20. Then, the lock nut is screwed into the screw section 332 of the drive component 33 and tightened against the base 41 of the hoisting assembly 40 to strengthen the fixed state of the drive component 33.

[0055] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0056] The lifting device includes a fixed plate, a lifting assembly, and a transmission assembly. The fixed plate is used to support the fan assembly. The lifting assembly is rotatably connected to the fixed plate, and the bottom end of the lifting assembly is used to contact the supporting base surface. The transmission assembly is connected to the lifting assembly to drive the lifting assembly to rotate relative to the fixed plate, so that the bottom end of the lifting assembly moves relative to the supporting base surface, thereby raising and lowering the fixed plate relative to the supporting base surface, and driving the fan assembly to perform lifting and lowering movements. In the above configuration, the fixed plate is connected to the fan assembly and supports the fan assembly for lifting and lowering. The lifting assembly is movably connected to the fixed plate. By driving the drive component of the transmission assembly, the turbine section of the rotating component meshing with the worm gear section of the drive component rotates, thereby driving the two moving rods to move relatively away from or relatively close to each other. This causes the lifting assembly to rotate relative to the fixed plate, making the fixed plate rise and fall relative to the support base, thus driving the fan assembly to rise and fall. At the same time, when the fan assembly descends, the bottom end of the lifting assembly contacts the support base and moves relative to the support base, thereby realizing the lifting and lowering of the fan assembly and supporting the fan assembly after it descends. This strengthens the vertical support strength of the fan assembly, reduces the load on the cabinet base, and improves the operational reliability of the whole unit, especially 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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), and the fixing plate (10) has a first through hole (14). A lifting assembly (20) is rotatably connected to the fixed plate (10), and the bottom end of the lifting assembly (20) is used to contact the supporting base surface (2). A transmission assembly (30) is connected to the lifting assembly (20) to drive the lifting assembly (20) to rotate relative to the fixed plate (10), so that the bottom end of the lifting assembly (20) moves relative to the supporting base (2), so that the fixed plate (10) moves up and down relative to the supporting base (2), thereby driving the fan assembly (1) to perform lifting and lowering movements; The hoisting assembly (40) includes a base (41) having a movable opening (410) for a portion of the fan assembly (1) to pass through and a second through hole. The lifting assembly (20) includes two oppositely arranged movable parts (21), each of which is rotatably connected to the fixed plate (10), and the bottom end of each of which is used to connect to the support base (2). The transmission assembly (30) includes a rotating component (31) and a driving component (33). The rotating component (31) is connected to two movable components (21) respectively. The rotating component (31) has a worm gear section (312). The driving component (33) has a worm section (331) and a screw section (332). The worm section (331) is disposed at the bottom of the screw section (332). The screw section (332) is threadedly engaged with the first through hole (14). The axis of the worm section (331) extends vertically and meshes with the worm gear section (312) so that the rotating component (31) is driven to rotate by the driving component (33) so that the bottom ends of the two movable components (21) are relatively close or relatively far apart. The fixing plate (10) is located on the side of the base (41) close to the supporting base surface (2), and the screw section (332) passes through the first through hole (14) and the second through hole and connects to the base (41); The lifting assembly (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 surface (2); when the lifting assembly (20) is in the supported state, the transmission assembly (30) drives the bottom end of the lifting assembly (20) to move relative to the supporting base surface (2), so that the fixed plate (10) moves up and down relative to the supporting base surface (2); The fixing plate (10) is provided with a first connecting hole (13); The base (41) is provided with a plurality of fixing holes (411), which are arranged around the movable opening (410) so that when the lifting assembly (20) is in the storage state, the fixing plate (10) is fixedly connected to the base (41) by a first fixing member passing through the first connecting hole (13) and the fixing hole (411); after the fan assembly (1) descends to the predetermined state, the fan assembly (1) is fixed on the base (41) by a second fixing member passing through the fan assembly (1) and the fixing hole (411).

2. The lifting device according to claim 1, characterized in that, Each of the aforementioned moving parts (21) includes: The lifting frame (22) is rotatably connected to the fixed plate (10) at its top end, and a moving rod (24) is provided at the bottom end of the lifting frame (22) for contacting the supporting base (2).

3. The lifting device according to claim 2, characterized in that, The lifting frame (22) also includes two lifting rods (23) arranged opposite to each other. The top ends of the two lifting rods (23) are rotatably connected to the fixed plate (10); the two ends of the moving rod (24) are connected to the bottom ends of the two lifting rods (23).

4. The lifting device according to claim 3, characterized in that, The two moving rods (24) are respectively provided with a first fixing member (241) and a second fixing member (242). The rotating component (31) is connected to the first fixing member (241) and the second fixing member (242) respectively, so as to drive the bottom ends of the two lifting rods (23) to move closer to each other or further away from each other.

5. The lifting device according to claim 4, characterized in that, The first fixing member (241) and the second fixing member (242) are respectively provided with a first threaded hole (2410) and a second threaded hole (2420); the rotating component (31) includes a first threaded segment (310) and a second threaded segment (311), the first threaded segment (310) is threadedly engaged with the first threaded hole (2410), and the second threaded segment (311) is threadedly engaged with the second threaded hole (2420); wherein the thread directions of the first threaded segment (310) and the second threaded segment (311) are opposite.

6. The lifting device according to claim 1, characterized in that, The transmission assembly (30) further includes a connecting component (32), which has a first limiting hole (320) and a first limiting groove (321). The worm segment (331) passes through the first limiting hole (320), and the first limiting hole (320) communicates with the first limiting groove (321) so as to limit the worm segment (331) and the connecting component (321) by means of a first fastener passing through the first limiting groove (321) and on the worm segment (331). The axial movement between the connecting component (32) and the connecting component (32) is further provided with a second limiting hole (322) and a second limiting groove (323). The worm gear segment (312) passes through the second limiting hole (322). The second limiting hole (322) communicates with the second limiting groove (323) so as to limit the axial movement between the worm gear segment (312) and the connecting component (32) by a second fastener passing through the second limiting groove (323) and the worm gear segment (312).

7. The lifting device according to claim 2, characterized in that, Each of the moving parts (21) further includes a roller (25) rotatably mounted on the moving rod (24); and / or 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). The top of the lifting frame (22) is rotatably connected to both of the folding plates (12).

8. The lifting device according to any one of claims 1 to 7, characterized in that, The fixing plate (10) is provided with a clearance opening (3) for the fan assembly (1) to pass through; and / or The fan assembly (1) is fixedly connected to the fixing plate (10) through the first connecting hole (13).

9. The lifting device according to any one of claims 1 to 7, characterized in that, The base (41) is also provided with: Multiple columns (42), the bottom ends of which are connected to the base (41); Multiple crossbeams (43) are provided along the circumference of the base (41), and at least one crossbeam (43) is provided between any two adjacent columns (42).

10. 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 9, and the fan assembly (1) is installed on the lifting device.

11. The air conditioning unit according to claim 10, characterized in that, The fan assembly (1) includes a centrifugal fan (4), an upper mounting plate (5), a lower mounting plate (6), and a plurality of fixed columns (7). The lower mounting plate (6) is connected to the centrifugal fan (4), and the two ends of the plurality of fixed columns (7) are respectively connected to the upper mounting plate (5) and the lower mounting plate (6). The outer peripheral surface of the upper mounting plate (5) protrudes from the outer peripheral surface of the lower mounting plate (6).

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