Self-waterproof centrifugal fan

By designing a dual-filter screen and limiting/moving components in the centrifugal fan, the problem of dust and lint entering the volute is solved, achieving stable operation and waterproofing of the fan, and improving its performance.

CN223578244UActive Publication Date: 2025-11-21JIANGSU GANGDING ENVIRONMENTAL PROTECTION TECH CO LTD
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Patent Information

Application Number
CN202422974007.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-04
Publication Date
2025-11-21
Estimated Expiration
2034-12-04

AI Technical Summary

Technical Problem

During prolonged blowing, dust and lint in the air can easily enter the volute of a traditional centrifugal fan, causing the fan blades and output shaft to become entangled, affecting the fan's continuous operation and performance.

Method used

A self-waterproof centrifugal fan was designed, which adopts a double filter screen and a limiting and moving component. The combination of the limiting and fixing components facilitates the disassembly and cleaning of the filter screen, prevents dust and lint from entering the volute, and a sealing ring is installed at the motor output end to prevent water erosion.

Benefits of technology

It effectively prevents dust and lint from entering the volute, improves the performance of the centrifugal fan, ensures the continuous and stable operation of the fan, and prevents the motor from being corroded by water through the sealing ring.

✦ Generated by Eureka AI based on patent content.

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Abstract

The self-waterproof centrifugal fan comprises an assembling support, the side wall of the assembling support is fixedly connected with an assembling volute, the top of the assembling support is fixedly connected with an assembling motor, the output end of the assembling motor is fixedly connected with an assembling rod, and the tail end of the assembling rod penetrates through the assembling volute and is fixedly connected with assembling fan blades. And a sealing ring is arranged at the joint of the assembly rod and the assembly volute. According to the utility model, the movable hanging rings are pulled and turned over, so that the movable hanging rings are hooked with or separated from the corresponding connecting hooks, and then the connecting frame is pulled, so that the connecting blocks on the connecting frame drive the connecting insertion strips to be separated from the corresponding connecting sleeve blocks; and dust and batting on the connecting filter screen on the connecting frame are cleaned after being detached, so that the dust and the batting entering the volute are reduced, the dust and the batting are conveniently cleaned, and the using effect is improved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal fan technical field especially relates to a self waterproof centrifugal fan. BACKGROUND

[0002] Centrifugal fan is relied on inputted mechanical energy, improves gas pressure and sends gas, it is a kind of driven fluid machinery, centrifugal fan is widely used in factory, mine, tunnel, cooling tower, vehicle, ship and the ventilation, dust removal and cooling of building, the ventilation and air induction of boiler and industrial furnace, cooling and ventilation in air conditioning equipment and household appliance equipment, grain drying and selection, wind tunnel air source and air cushion ship's inflation and propulsion etc., the dust and lint in air are easy to enter the volute inside on centrifugal fan when traditional centrifugal fan carries out blast for a long time, and the dust and lint inside volute are not easy to clean, leading to the operation of fan blade and output shaft on centrifugal fan after entangling, influence the sustained blast of centrifugal fan, thereby reduce the use effect. SUMMARY

[0003] The utility model discloses a self waterproof centrifugal fan to solve the shortcoming of prior art.

[0004] In order to achieve the above object, the utility model discloses a self waterproof centrifugal fan, including assembly support, the assembly support side wall is fixedly connected with assembly volute, the assembly support top is fixedly connected with assembly motor, the assembly motor output is fixedly connected with assembly rod, the assembly rod tail end is fixedly connected with assembly fan blade and is penetrated through assembly volute, the assembly rod is provided with sealing ring at the junction, the assembly volute air inlet and air outlet are fixedly connected with air inlet channel and air outlet channel respectively, the air inlet channel outer side wall is fixedly connected with air outlet frame, the air outlet frame top is penetrated and is set with assembly opening, the assembly opening is provided with double filter screen board in, the double filter screen board top is fixedly connected with assembly board, the assembly board top is fixedly connected with two assembly struts, the air outlet frame outer side wall both sides are connected with fixed assembly component;

[0005] The air outlet channel is fixedly connected with the connecting sleeve block on both sides, the air outlet channel side wall is provided with the connecting frame, the connecting frame inner wall is fixedly connected with the connecting filter screen between both sides, the connecting frame both sides are fixedly connected with the connecting block, the connecting block side wall is fixedly connected with the connecting plug strip, the connecting plug strip tail end extends to the outside of the connecting sleeve block corresponding thereto, the connecting block surface is fixedly connected with the connecting hook, and the connecting sleeve block surface is connected with the moving assembly.

[0006] Further description of the above technical solution:

[0007] The fixed assembly includes a fixed recess block fixedly connected with the outer sidewall of the air outlet frame, a fixed rotating shaft rotatably connected between the inner walls of the fixed recess block, a fixed L-shaped plate fixedly sleeved with the outer sidewall of the fixed rotating shaft, a back-shaped opening provided through the top of the fixed L-shaped plate, an assembly branch movably connected with the inside of the back-shaped opening, two fixed grooves provided in the top of the fixed L-shaped plate, and a fixed sliding block slidably connected in the fixed grooves.

[0008] As a further description of the above technical solution:

[0009] The fixed grooves are fixedly connected with fixed springs, the fixed springs are fixedly connected with the corresponding fixed sliding blocks at the ends, two fixed push plates are fixedly connected between the two fixed sliding blocks, a fixed insertion strip is fixedly connected with the sidewall of the fixed push plate, the fixed insertion strip penetrates through the assembly branch and extends to the outside of the assembly branch, a fixed hole is provided through the top of the fixed insertion strip, and a limiting assembly is connected with the sidewall of the fixed L-shaped plate.

[0010] As a further description of the above technical solution:

[0011] The limiting assembly includes a limiting block fixedly connected with the sidewall of the fixed L-shaped plate, a limiting insertion strip provided through the top of the limiting block, a limiting pull block fixedly connected with one end of the limiting insertion strip, a limiting spring movably sleeved with the outer sidewall of the limiting insertion strip, the limiting spring being fixedly connected with the sidewall of the limiting pull block and the sidewall of the limiting block at the two ends, and the other end of the limiting insertion strip extending to the outside of the fixed hole.

[0012] As a further description of the above technical solution:

[0013] The moving assembly includes two moving grooves provided in the surface of the connecting sleeve block, moving sliding blocks slidably connected in the moving grooves, moving springs fixedly connected with the inner walls of the moving grooves, and the moving springs being fixedly connected with the corresponding moving sliding blocks at the ends.

[0014] As a further description of the above technical solution:

[0015] Two moving sliding blocks are fixedly connected with a moving convex plate, moving hanging rings rotatably connected between the top and the bottom of the moving convex plate, and the moving hanging rings being movably hung with the corresponding connecting hooks.

[0016] The utility model has the advantages of:

[0017] The limiting block, the limiting insertion strip, the limiting pull block and the limiting spring are cooperated by the limiting assembly, so that the limiting insertion strip and the limiting spring are moved along the direction on the limiting block by pulling or loosening the limiting pull block, the limiting insertion strip is inserted or separated from the fixed hole on the fixed insertion strip, the assembly support, the fixed concave block, the fixed L-shaped plate, the fixed sliding block, the fixed spring, the fixed push plate and the fixed insertion strip are cooperated by the fixed assembly, so that the fixed spring gives the fixed sliding block and the fixed push plate a restoring force by loosening the fixed push plate, the fixed push plate also drives the fixed insertion strip to be separated from the assembly support corresponding to the fixed insertion strip, the fixed L-shaped plate is moved and turned, the fixed L-shaped plate is separated from the assembly support corresponding to the fixed L-shaped plate, the assembly plate is pulled, the assembly plate drives the double filter screen plate to be inserted or separated from the assembly opening, and the filter screen plate is cleaned, the moving sliding block, the moving spring, the moving convex plate and the moving hanging ring are cooperated by the moving assembly, so that the moving hanging ring is hung or separated from the connecting hook corresponding to the moving hanging ring by moving and turning the moving hanging ring, the connecting block on the connecting frame drives the connecting insertion strip to be separated from the connecting sleeve block corresponding to the connecting insertion strip by pulling the connecting frame, dust and lint on the connecting filter screen on the connecting frame are cleaned after being disassembled, dust and lint entering the volute are reduced, dust and lint are cleaned, and the use effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A whole structure schematic diagram of a self-waterproof centrifugal fan is provided in the utility model.

[0019] Figure 2 An assembly volute internal structure schematic diagram of a self-waterproof centrifugal fan is provided in the utility model.

[0020] Figure 3 A structure schematic diagram of A in the figure is provided. Figure 1 A structure schematic diagram of B in the figure is provided.

[0021] Figure 4 A structure schematic diagram of A in the figure is provided. Figure 1 A structure schematic diagram of B in the figure is provided.

[0022] Legend:

[0023] 1, assembly support; 2, assembly volute; 3, assembly motor; 4, assembly rod; 5, assembly fan blade; 6, sealing ring; 7, air outlet frame; 8, double filter screen plate; 9, assembly plate; 10, assembly support; 11, fixed concave block; 12, fixed L-shaped plate; 13, fixed sliding block; 14, fixed spring; 15, fixed push plate; 16, fixed insertion strip; 17, limiting block; 18, limiting insertion strip; 19, limiting pull block; 20, limiting spring; 21, connecting sleeve block; 22, connecting frame; 23, connecting filter screen; 24, connecting block; 25, connecting insertion strip; 26, connecting hook; 27, moving sliding block; 28, moving spring; 29, moving convex plate; 30, moving hanging ring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Referring to Figures 1-4 The self-waterproof centrifugal fan provided by the utility model comprises an assembly support 1, the side wall of the assembly support 1 is fixedly connected with an assembly volute 2, the top of the assembly support 1 is fixedly connected with an assembly motor 3, the output end of the assembly motor 3 is fixedly connected with an assembly rod 4, the tail end of the assembly rod 4 penetrates through the assembly volute 2 and is fixedly connected with an assembly fan blade 5, the assembly rod 4 is provided with a sealing ring 6 at the connecting position with the assembly volute 2, the air inlet and the air outlet of the assembly volute 2 are fixedly connected with an air inlet channel and an air outlet channel respectively, the outer side wall of the air inlet channel is fixedly sleeved with an air outlet frame 7, the top of the air outlet frame 7 is provided with an assembly opening, the assembly opening is provided with a double filter screen plate 8 inside, the top of the double filter screen plate 8 is fixedly connected with an assembly plate 9, the top of the assembly plate 9 is fixedly connected with two assembly supports 10, the outer side wall of the air outlet frame 7 is connected with a fixed assembly on both sides, the fixed assembly plays a limiting role on the double filter screen plate 8, Figure 1 and Figure 2The fixed assembly comprises a fixed recessed block 11 fixedly connected with the outer side wall of the air outlet frame 7, a fixed rotating shaft rotatably connected between the inner walls of the fixed recessed block 11, a fixed L-shaped plate 12 fixedly sleeved with the outer side wall of the fixed rotating shaft, a back-shaped opening provided through the top of the fixed L-shaped plate 12, a movable clamping of the assembly support 10 corresponding to the back-shaped opening, two fixed grooves provided through the top of the fixed L-shaped plate 12, a fixed sliding block 13 slidably connected in the fixed grooves, a fixed spring 14 fixedly connected with the inner wall of the fixed groove and fixedly connected with the fixed sliding block 13 at the end thereof, a fixed push plate 15 fixedly connected between the two fixed sliding blocks 13, a fixed insertion strip 16 fixedly connected with the side wall of the fixed push plate 15 and extending through the assembly support 10 and to the outside of the assembly support 10 at the end thereof, and a fixed hole provided through the top of the fixed insertion strip 16. The fixed insertion strip 16 passes through the assembly support 10, so as to fix the double filter screen plate 8 on the assembly plate 9.

[0026] The fixed L-shaped plate 12 is connected with a limiting assembly. Referring to Figure 2 The limiting assembly comprises a limiting block 17 fixedly connected with the side wall of the fixed L-shaped plate 12, a limiting insertion strip 18 provided through the top of the limiting block 17, a limiting pull block 19 fixedly connected with one end of the limiting insertion strip 18, a limiting spring 20 movably sleeved with the outer side wall of the limiting insertion strip 18, the limiting spring 20 being fixedly connected with the side wall of the limiting pull block 19 and the side wall of the limiting block 17 at the two ends thereof, the other end of the limiting insertion strip 18 extending to the outside of the fixed hole, and the limiting insertion strip 18 passing through the fixed hole of the fixed insertion strip 16, so as to limit the fixed insertion strip 16.

[0027] The air outlet channel is fixedly connected with a connecting sleeve block 21 at the front and rear sides thereof, is provided with a connecting frame 22 at the side wall thereof, is fixedly connected with a connecting filter screen 23 between the inner walls of the connecting frame 22, is fixedly connected with a connecting block 24 at the front and rear sides of the connecting frame 22, is fixedly connected with a connecting insertion strip 25 with the side wall of the connecting block 24, the connecting insertion strip 25 extending to the outside of the connecting sleeve block 21 at the end thereof, is fixedly connected with a connecting hook 26 on the surface of the connecting block 24, and is connected with a moving assembly on the surface of the connecting sleeve block 21. Referring to Figure 1 and Figure 4 The moving assembly comprises two moving grooves provided through the surface of the connecting sleeve block 21, a moving sliding block 27 slidably connected in the moving grooves, a moving spring 28 fixedly connected with the inner wall of the moving groove and fixedly connected with the moving sliding block 27 at the end thereof, a moving convex plate 29 fixedly connected between the two moving sliding blocks 27, a moving hanging ring 30 rotatably connected between the top and the bottom of the moving convex plate 29, and the moving hanging ring 30 movably hung with the connecting hook 26 corresponding thereto. The moving hanging ring 30 is movably hung with the connecting hook 26 corresponding thereto, so as to limit the connecting filter screen 23 on the connecting frame 22.

[0028] Working principle: when cleaning, first move and turn the moving ring 30, so that the moving ring 30 is separated from the corresponding connecting hook 26, then loosen the moving ring 30, so that the moving spring 28 gives the moving slider 27 and the moving tab 29 to reset, then the moving tab 29 also drives the moving ring 30 to reset, then pull the connecting frame 22, so that the connecting block 24 on the connecting frame 22 drives the connecting plug 25 to separate from the corresponding connecting sleeve block 21, then clean the dust and lint on the connecting filter screen 23 after disassembly, ensure the cleaning effect.

[0029] At the same time, pull the limiting pull block 19, drive the limiting plug 18 and the limiting spring 20 along the direction of the limiting block 17, then the limiting plug 18 is separated from the fixed hole on the fixed plug 16, then loosen the fixed push plate 15, so that the fixed spring 14 gives the fixed slider 13 and the fixed push plate 15 a restoring force, at the same time, the fixed push plate 15 also drives the fixed plug 16 to separate from the corresponding assembly support 10, then move and turn the fixed L-shaped plate 12, so that the backshaped hole on the fixed L-shaped plate 12 is separated from the corresponding assembly support 10, then pull the assembly plate 9, so that the assembly plate 9 drives the double filter screen plate 8 to separate from the assembly hole, so as to clean the filter screen plate 8 again, ensure the further cleaning effect.

[0030] When installing, take the assembly plate 9 again, so that the assembly plate 9 drives the double filter screen plate 8 to be inserted into the assembly hole, then move and turn the fixed L-shaped plate 12, so that the backshaped hole on the fixed L-shaped plate 12 is clamped with the corresponding assembly support 10, at the same time, push the fixed push plate 15, so that the fixed plug 16 on the fixed push plate 15 passes through the assembly support 10, then loosen the limiting pull block 19, so that the limiting spring 20 gives the limiting plug 18 a restoring force, so that the limiting plug 18 passes through the fixed hole on the fixed plug 16, then take the cleaned connecting frame 22, then drive the connecting plug 25 with the corresponding connecting sleeve block 21 by the connecting block 24 on the connecting frame 22, then pull the moving tab 29, so that the moving tab 29 drives the moving slider 27 and the moving spring 28 to slide in the moving groove, then move and turn the moving ring 30, so that the moving ring 30 is movably connected with the corresponding connecting hook 26, ensure the installation effect after disassembly and cleaning.

[0031] Finally, when the assembled motor 3 is eroded by rainwater, because the output end of the assembled motor 3 is installed with the assembly rod 4, and the connecting part between the assembly rod 4 and the assembly volute 2 is installed with the sealing ring 6, so that the sealing ring 6 prevents water from entering the assembled motor 3, reduces the short circuit of the internal parts of the assembled motor 3, and ensures the waterproof effect.

[0032] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A self-weatherproof centrifugal fan comprising an assembly support (1), characterized in that: The assembly support (1) side wall is fixedly connected with an assembly volute (2), the assembly support (1) top is fixedly connected with an assembly motor (3), the assembly motor (3) output end is fixedly connected with an assembly rod (4), the assembly rod (4) end is fixedly connected with an assembly fan blade (5), the assembly rod (4) and the assembly volute (2) connection place is provided with a sealing ring (6), the assembly volute (2) air inlet and air outlet are fixedly connected with an air inlet channel and an air outlet channel respectively, the air inlet channel outer side wall is fixedly sleeved with an air outlet frame (7), the air outlet frame (7) top is provided with an assembly opening, the assembly opening inside is provided with a double filter screen plate (8), the double filter screen plate (8) top is fixedly connected with an assembly plate (9), the assembly plate (9) top is fixedly connected with two assembly struts (10), the air outlet frame (7) outer side wall both sides are connected with a fixed assembly; The air outlet channel front and back sides are fixedly connected with a connecting sleeve block (21), the air outlet channel side wall is provided with a connecting frame (22), the connecting frame (22) inner wall both sides are fixedly connected with a connecting filter screen (23), the connecting frame (22) front and back sides are fixedly connected with a connecting block (24), the connecting block (24) side wall is fixedly connected with a connecting plug strip (25), the connecting plug strip (25) end extends to the outside of the corresponding connecting sleeve block (21), the connecting block (24) surface is fixedly connected with a connecting hook (26), the connecting sleeve block (21) surface is connected with a moving assembly.

2. A self-priming centrifugal fan according to claim 1, characterized in that: The fixed assembly includes a fixed recess block (11) fixedly connected with the air outlet frame (7) outer side wall, the fixed recess block (11) inner wall both sides are rotatably connected with a fixed rotating shaft, the fixed rotating shaft outer side wall is fixedly sleeved with a fixed L-shaped plate (12), the fixed L-shaped plate (12) top is provided with a meandering opening, the meandering opening inside and the corresponding assembly strut (10) are movably connected, the fixed L-shaped plate (12) top is provided with two fixed grooves, the fixed groove inside is slidably connected with a fixed sliding block (13).

3. A self-priming centrifugal fan as claimed in claim 2, characterized in that: The fixed groove inner wall is fixedly connected with a fixed spring (14), the fixed spring (14) end is fixedly connected with the corresponding fixed sliding block (13), the two fixed sliding blocks (13) are fixedly connected with a fixed push plate (15), the fixed push plate (15) side wall is fixedly connected with a fixed plug strip (16), the fixed plug strip (16) end penetrates through the assembly strut (10) and extends to the outside of the assembly strut (10), the fixed plug strip (16) top is provided with a fixed hole, the fixed L-shaped plate (12) side wall is connected with a limiting assembly.

4. A self-priming centrifugal fan according to claim 3, wherein: The limiting assembly includes the limiting block (17) fixedly connected with the side wall of the fixed L-shaped plate (12), the limiting plug strip (18) is arranged on the top of the limiting block (17), one end of the limiting plug strip (18) is fixedly connected with the limiting pull block (19), the outer side wall of the limiting plug strip (18) movably sleeves the limiting spring (20), the two ends of the limiting spring (20) are fixedly connected with the side wall of the limiting pull block (19) and the side wall of the limiting block (17) respectively, and the other end of the limiting plug strip (18) extends to the outside of the fixed hole.

5. A self-priming centrifugal fan as claimed in claim 1, wherein: The moving assembly includes two moving grooves arranged on the surface of the connecting sleeve block (21), the moving grooves are slidably connected with the moving sliders (27), the inner walls of the moving grooves are fixedly connected with the moving springs (28), and the ends of the moving springs (28) are fixedly connected with the corresponding moving sliders (27).

6. A self-priming centrifugal fan as claimed in claim 5, characterized in that: The two moving sliders (27) are fixedly connected with the moving convex plate (29), the moving convex plate (29) is rotatably connected with the moving hanging ring (30) between the top and the bottom of the moving convex plate (29), and the moving hanging ring (30) is movably hung with the corresponding connecting hook (26).