CN212838498U - Centrifugal fan - Google Patents

Abstract

The utility model relates to a centrifugal fan relates to fan technical field, including the casing, set up the motor in the casing, the casing internal rotation is provided with the fixing base, is provided with the fastener between the output shaft of motor and the fixing base, is equipped with the impeller on the fixing base. The application has the following advantages and effects: through setting up the mounting, strengthen the fixed of impeller and motor output shaft, reduce impeller axial, radial beating, improve impeller pivoted steadiness.

Description

Centrifugal fan

Technical Field

The application relates to the technical field of fans, in particular to a centrifugal fan.

Background

Most of the existing centrifugal fans are provided with a motor which drives a impeller to rotate so as to generate wind power. The centrifugal fan impeller is used for axially feeding air and radially discharging air, the impeller is driven by the motor to rotate at a high speed, and the air pressure is increased by utilizing the centrifugal force to do work and is blown out from the air outlet of the fan.

The existing fan, such as the centrifugal fan disclosed in the publication No. CN206309620U, is composed of a motor, a motor shaft driven by the motor, a bearing matched with the motor shaft, an impeller installed at one end of the motor shaft, a volute, and a motor chassis.

In the above-described related art, the inventors consider that: when the fan is started, the motor drives the motor shaft to rotate, the motor shaft drives the bearing to rotate, and the bearing drives the impeller to rotate at a high speed in the volute.

SUMMERY OF THE UTILITY MODEL

In order to improve the stability of impeller, the utility model aims at providing a centrifugal fan.

The application provides a centrifugal fan adopts following technical scheme:

the centrifugal fan comprises a casing and a motor arranged in the casing, wherein a fixed seat is arranged in the casing in a rotating mode, a fastening piece is arranged between an output shaft of the motor and the fixed seat, and an impeller is arranged on the fixed seat.

Through adopting above-mentioned technical scheme, when centrifugal fan during operation, the motor starts to drive the fixing base and rotates, and the fixing base drives the impeller again and rotates, and the fastener links to each other motor output shaft and fixing base fastening, and the impeller realizes stable rotation under the enhancement of fastener. Therefore, through the arrangement of the fixing piece, the fixation of the impeller and the motor output shaft is enhanced, the axial and radial runout of the impeller is reduced, and the rotating stability of the impeller is improved.

Preferably, the fastener includes a fixing column coaxially connected to the motor output shaft, a plurality of fixing blocks fixedly connected to a side wall of the fixing column, and a fixing barrel sleeved on the fixing column, one end of the fixing barrel far away from the motor is fixedly connected to the fixing seat, a sliding groove for sliding the fixing block is formed in an inner side wall of the fixing barrel, a transverse groove for sliding the fixing block circumferentially is formed in a groove wall of the sliding groove, and a fixing groove for clamping the fixing block is formed in a groove wall of the transverse groove close to the motor.

Through adopting above-mentioned technical scheme, when fixed with motor output shaft and impeller, with the solid fixed cylinder towards the fixed column removal, the solid fixed cylinder cup joints on the fixed column to make the fixed block slide in the spout, until the fixed block sideslip to the notch of cross slot. And then the fixed cylinder is rotated, so that the fixed block slides in the transverse groove in the circumferential direction until the fixed block slides to the notch of the fixed groove. And then the fixed cylinder is communicated with the fixed seat to move towards the direction far away from the motor, so that the fixed block is clamped into the fixed groove, and the fixed cylinder and the fixed column are fixed. Consequently through the cooperation that sets up fixed cylinder and fixed column, utilize the fixed block joint to in the fixed slot, realize the fixed of fixing base and motor output shaft, reduce the runout of impeller to strengthen the steadiness of impeller and motor output shaft.

Preferably, seted up the intercommunication on the lateral wall of fixing base the through-hole of a fixed section of thick bamboo, the fixing base is back to be equipped with on the lateral wall of a fixed section of thick bamboo will the locking dish that the through-hole covered, the locking dish orientation fixedly connected with extends to the locking post in the fixed section of thick bamboo on the lateral wall of a fixed section of thick bamboo, the fixed column is kept away from the confession has been seted up to the tip of motor the locking groove that locking post tip card is gone into, the locking post with be equipped with the locking piece between the locking groove.

Through adopting above-mentioned technical scheme, when using the locking dish with fixing base and fixed post locking, with the direction removal of locking dish towards fixed cylinder for in the locking post slided into fixed cylinder, go into the locking inslot of fixed column tip until the tip card of locking post, reuse the locking piece and lock locking post and fixed column, realize the fixed connection of locking dish and fixed column. Consequently through setting up the locking piece, utilize the locking piece to lock locking post and fixed column, realize the fixed of solid fixed cylinder and fixed column, reduce the axial of impeller and beat, further strengthen the steadiness of impeller and motor output shaft.

Preferably, a through groove is formed in the locking column, the locking piece comprises a locking rod penetrating through the locking column and a locking block sliding in the through groove, a first rack is fixedly connected to the side wall of the locking rod, a second rack meshed with the first rack is fixedly connected to the side wall of the locking block, a clamping groove clamped with the locking block is formed in the groove wall of the locking groove, and a cross-shaped groove is formed in the end face, far away from one end of the fixing column, of the locking rod.

Through adopting above-mentioned technical scheme, when using the locking piece to lock locking post and fixed column, go into the tip card of locking post and lock the inslot, the cross changes the sword and inserts the cross recess and rotates, drives the locking lever and rotates, and then drives the locking piece that meshes in the locking lever and slide in leading to the inslot, slides to the draw-in groove until the locking piece, realizes the locking of locking post and fixed column. Consequently through the cooperation that sets up locking lever and locking block, utilize the joint of locking block and draw-in groove, strengthen the joint of fixed block and fixed slot to realize the fixed of fixed column and fixed cylinder, and then reduce the axial of impeller and beat.

Preferably, one side of the locking disc, which faces away from the motor, is provided with a fixed disc covering the locking column, and the fixed disc and the locking disc are connected to the fixed seat through bolts.

Through adopting above-mentioned technical scheme, when fixed with locking disk and fixing base, move the fixed disk towards the locking disk, cover the tip that the fixed column was kept away from to the locking post until the fixed disk to with the locking disk lateral wall shutoff of motor back to, the rethread bolted connection is fixed in the fixing base with the locking disk on, realize the fixed of locking disk and fixing base. Consequently through setting up the fixed disk, utilize bolted connection to be fixed in the fixing base with the locking dish on, strengthen the stability of locking dish and locking post to strengthen the steadiness of fixing base and fixed column.

Preferably, the fixing base include in fixed plate, fixed connection that the solid fixed cylinder is connected in impeller, fixed connection on the fixed plate in the impeller is kept away from the fixed frame of fixed plate one end, the fixed plate with be equipped with a plurality of bracing piece between the fixed frame.

Through adopting above-mentioned technical scheme, when the motor starts, drive the fixed plate and rotate, the fixed plate drives impeller and fixed frame rotation again, and high-speed pivoted impeller is fixed in between fixed plate and the fixed frame under the bracing piece. Therefore, the fixing frame and the fixing seat are fixed by the support rods, so that the stability of the impeller and the fixing seat is enhanced.

Preferably, the support rod comprises a first rod reinforcing rod and a second reinforcing rod, the first rod reinforcing rod is connected with the fixing plate through a bolt, the second reinforcing rod is connected with the fixing frame through a bolt, and the adjusting pipe is in threaded connection between the first reinforcing rod and the second reinforcing rod.

Through adopting above-mentioned technical scheme, when using the bracing piece to fix the impeller, keep away from the one end bolted connection of second gusset bar on the fixed plate with first gusset bar, keep away from the one end of fixed plate with adjusting pipe threaded connection in first gusset bar, keep away from the one end of first gusset bar with the one end threaded connection of second gusset bar in the adjusting pipe. And connecting one end of the second reinforcing rod, which is far away from the first reinforcing rod, on the fixing frame through a bolt, and screwing the adjusting pipe to fix the first reinforcing rod and the second reinforcing rod. Consequently through setting up the control tube, utilize the cooperation of first anchor strut and second anchor strut, realize that the bracing piece is fixed to the impeller of equidimension not to improve the suitability of bracing piece.

Preferably, the support rod is obliquely arranged around the circumferential side wall of the fixed plate between the fixed plate and the fixed frame.

Through adopting above-mentioned technical scheme, the bracing piece slope sets up between fixed plate and fixing base, when strengthening the steadiness of impeller between fixed plate and fixing base, reduces because fixed frame and fixed plate rotate inertial difference and cause the wrench movement to the impeller, reduces the damage that the impeller received to increase the life of impeller.

In summary, the present application includes at least one of the following beneficial technical effects:

the fixing part is arranged to strengthen the fixation of the impeller and the motor output shaft, reduce the axial and radial runout of the impeller and improve the stability of the rotation of the impeller;

the fixing base is fixed with the output shaft of the motor by arranging the matching of the fixing barrel and the fixing column and clamping the fixing block into the fixing groove, so that the radial runout of the impeller is reduced, and the stability of the impeller and the output shaft of the motor is enhanced;

by arranging the locking piece, the locking column and the fixing column are locked by the locking piece, so that the fixing of the fixing cylinder and the fixing block is realized, the axial runout of the impeller is reduced, and the stability of the impeller and the motor output shaft is further enhanced;

through setting up the control tube, utilize the cooperation of first anchor strut and second anchor strut, realize that the bracing piece is fixed to the impeller of equidimension not to improve the suitability of bracing piece.

Drawings

Fig. 1 is a schematic view of an overall structure for showing an impeller according to an embodiment of the present application.

Fig. 2 is a schematic view of the overall structure for showing the motor according to the embodiment of the present application.

Fig. 3 is a schematic structural diagram of a fixing base according to an embodiment of the present application.

Fig. 4 is an exploded view of an embodiment of the present application showing a fastener.

Fig. 5 is an enlarged schematic view of a portion a in fig. 4.

Fig. 6 is an exploded view of an embodiment of the present application for showing a lock.

Fig. 7 is an enlarged schematic view of a portion B in fig. 6.

Description of reference numerals: 1. a housing; 11. a motor; 12. an air inlet; 13. an air outlet; 2. a fixed seat; 21. a fixing plate; 211. a through hole; 22. an impeller; 23. a fixing frame; 24. a locking disk; 241. a locking post; 2411. a through groove; 2412. a rotating groove; 242. a locking groove; 25. fixing the disc; 26. a support bar; 261. a first reinforcing bar; 262. a second reinforcing bar; 263. an adjusting tube; 3. a fastener; 31. fixing a column; 32. a fixed block; 33. a fixed cylinder; 331. a chute; 332. a transverse groove; 333. fixing grooves; 4. a locking member; 41. a locking lever; 411. a first rack; 412. a cross-shaped groove; 42. a locking block; 421. a second rack; 422. a clamping groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses centrifugal fan.

Referring to fig. 1 and 2, a centrifugal fan includes casing 1, motor 11 of fixed connection on casing 1, and in motor 11's output shaft was worn to establish to casing 1, motor 11's output shaft coaxial coupling had fixing base 2, is equipped with impeller 22 on the fixing base 2, lies in on the casing 1 on the lateral wall of fixing base 2 back to motor 11 and has seted up air intake 12, has seted up air outlet 13 on the casing 1 lateral wall of fixing base 2 top.

Referring to fig. 2 and 3, the fixing base 2 includes a fixing plate 21 coaxially connected to an output shaft of the motor 11, an impeller 22 fixedly connected to a side wall of the fixing plate 21 opposite to the motor 11, and a fixing frame 23 fixedly connected to one end of the impeller 22 far from the fixing plate 21, the fixing plate 21 and the fixing frame 23 are both circular and have the same diameter, and the impeller 22 is fixedly connected to edges of the fixing plate 21 and the fixing frame 23.

Referring to fig. 2 and 3, a fixing plate 25 is bolted to a side wall of the fixing plate 21 facing away from the motor 11, and the fixing plate 25 is located at the center of the fixing plate 21. The side wall of the fixing plate 21 is connected with three support rods 26 by bolts around the edge of the fixing plate 25, the three support rods 26 are obliquely arranged between the fixing plate 21 and the fixing frame 23, and one end of each support rod 26 far away from the fixing plate 21 is connected to the fixing frame 23 by bolts.

Referring to fig. 3, the support rod 26 includes a first reinforcing rod 261 bolted to the fixing plate 21, a second reinforcing rod 262 bolted to the fixing frame 23, and an adjustment pipe 263 threadedly coupled between the first reinforcing rod 261 and the second reinforcing rod 262, the adjustment pipe 263 being threadedly coupled to an end of the first reinforcing rod 261 remote from the fixing plate 21 and being threadedly coupled to an end of the second reinforcing rod 262 remote from the fixing frame 23.

When the support rod 26 is used to fix the impeller 22, one end of the first reinforcing rod 261, which is far away from the second reinforcing rod 262, is bolted to the side wall of the fixing plate 21, which faces away from the motor 11, the adjusting pipe 263 is screwed to one end of the first reinforcing rod 261, which is far away from the fixing plate 21, the end of the second reinforcing rod 262 is screwed to one end of the adjusting pipe 263, which is far away from the first reinforcing rod 261, and one end of the second reinforcing rod 262, which is far away from the adjusting pipe 263, is bolted to the fixed frame 23, so that the fixing of the fixing plate 21 and the fixed frame 23 by the support rod 26 is realized, and the stability of the impeller 22, the fixing plate 21 and.

Referring to fig. 2 and 4, the fixing plate 21 is provided with a fastening member 3 fixed to the output shaft of the motor 11, and the fastening member 3 includes a fixing post 31 coaxially connected to the output shaft of the motor 11, a plurality of fixing blocks 32 fixedly connected to the side wall of the fixing post 31, and a fixing cylinder 33 sleeved on the fixing post 31 and clamped to the fixing blocks 32. The fixing blocks 32 are uniformly arranged along the circumferential side wall of the fixing column 31, one end of the fixing cylinder 33 far away from the fixing column 31 is fixedly connected on the fixing plate 21,

referring to fig. 4 and 5, a sliding slot 331 for sliding the fixing block 32 is formed on an end surface of the fixing cylinder 33 away from the fixing plate 21, and the sliding slot 331 extends along a length direction of the fixing cylinder 33. The groove wall of the sliding groove 331 far away from the motor 11 is provided with a transverse groove 332 for circumferential sliding of the fixed block 32, and the groove wall of the transverse groove 332 near the motor 11 is provided with a fixed groove 333 for clamping the fixed block 32.

Referring to fig. 4 and 6, a through hole 211 communicating with the fixed cylinder 33 is formed on a side wall of the fixed plate 21. A locking disc 24 is installed between the fixed disc 25 and the fixed plate 21, the fixed disc 25 fixes the locking disc 24 on the fixed plate 21 through bolt connection, a locking column 241 extending into the fixed cylinder 33 is fixedly connected to the side wall of the locking disc 24 facing the fixed plate 21, and a locking groove 242 for the end part of the locking column 241 to be clamped into is formed at the end part of the fixed cylinder 31 close to the fixed cylinder 33. A locking piece 4 for locking the locking post 241 and the fixing post 31 is provided between the locking post 241 and the locking groove 242.

Referring to fig. 4 and 7, the end of the locking post 241 clamped in the locking groove 242 is provided with a through groove 2411, the through groove 2411 extends along the radial direction of the locking post 241, the locking post 241 is provided with a rotation groove 2412 communicating with the through groove 2411, and the rotation groove 2412 extends along the length direction of the locking post 241 and penetrates through the locking post 241.

Referring to fig. 6 and 7, the locking member 4 includes a locking lever 41 rotated in the rotation groove 2412, and a locking block 42 slid in the through groove 2411. A first rack 411 is fixedly connected to a circumferential side wall of the locking lever 41, and the first rack 411 extends in a longitudinal direction of the locking lever 41. A second rack 421 engaged with the first rack 411 is fixedly connected to a side wall of the locking block 42 facing the locking lever 41.

Referring to fig. 6 and 7, a slot 422 that slides in and is engaged with the locking block 42 is formed on a slot wall of the locking slot 242, a cross-shaped groove 412 is formed on an end surface of one end of the locking lever 41 that is far away from the fixing column 31, and an end surface of the locking lever 41 that is far away from the fixing column 31 is abutted against a side wall of the fixed disk 25 that faces the locking disk 24.

When the impeller 22 is radially fixed, the fixing plate 21 is moved toward the motor 11 until the fixing cylinder 33 is sleeved on the fixing post 31, so that the fixing block 32 slides into the sliding slot 331, and the fixing plate 21 is continuously pushed, so that the fixing block 32 slides in the sliding slot 331 to the transverse slot 332. Then, the fixing plate 21 is rotated, so that the fixing block 32 slides to the fixing groove 333 in the inner circumference direction of the transverse groove 332, the fixing plate 21 moves in the direction away from the motor 11, the fixing block 32 is clamped in the fixing groove 333, and the impeller 22 is radially fixed.

When the impeller 22 is axially fixed, the locking disk 24 is moved toward the fixed plate 21, and the locking post 241 is aligned with the through hole 211 so that the locking post 241 slides into the fixed barrel 33 until the end of the locking post 241 snaps into the locking groove 242. Then, the cross screwdriver is used to rotate the locking rod 41 to drive the locking block 42 meshed with the locking rod 41 to slide in the through groove 2411 until the locking block 42 slides into the clamping groove 422, so that the locking block 42 is clamped into the clamping groove 422, and then the fixed disc 25 and the locking disc 24 are fixed on the fixed plate 21 through bolts, so that the impeller 22 is axially fixed.

The implementation principle of the centrifugal fan in the embodiment of the application is as follows: when the impeller 22 is fixed, the fixing plate 21 is moved toward the motor 11, and the fixing block 32 is engaged with the fixing groove 333 to fix the fixing cylinder 33 and the fixing post 31. Then, the locking disk 24 is moved towards the fixing column 31, the locking column 241 is clamped into the locking groove 242, the lever of the locking lever 41 is rotated, the locking block 42 is clamped into the clamping groove 422, and the fixing of the locking disk 24 and the fixing column 31 is achieved. Therefore, the fixation of the impeller 22 and the output shaft of the motor 11 is strengthened, the axial and radial runout of the impeller 22 is reduced, and the rotating stability of the impeller 22 is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a centrifugal fan, includes casing (1), set up in motor (11) in casing (1), its characterized in that: the motor is characterized in that a fixed seat (2) is rotationally arranged in the shell (1), a fastening piece (3) is arranged between an output shaft of the motor (11) and the fixed seat (2), and an impeller (22) is arranged on the fixed seat (2).

2. The centrifugal fan according to claim 1, wherein: fastener (3) including coaxial coupling in fixed column (31), a plurality of fixed blocks (32) of fixed connection on fixed column (31) lateral wall of motor (11) output shaft, cover locate fixed cylinder (33) on fixed column (31), fixed cylinder (33) are kept away from the one end fixed connection of motor (11) in on fixing base (2), offer on the inside wall of fixed cylinder (33) and supply spout (331) that fixed block (32) slided, offer on the cell wall of spout (331) and supply to complain transverse groove (332) that fixed block (32) circumference slided, transverse groove (332) are close to offer on the cell wall of motor (11) and supply fixed slot (333) of fixed block (32) joint.

3. A centrifugal fan according to claim 2, wherein: seted up the intercommunication on the lateral wall of fixing base (2) through-hole (211) of a fixed section of thick bamboo (33), fixing base (2) are back to opposite be equipped with on the lateral wall of a fixed section of thick bamboo (33) with locking dish (24) that through-hole (211) covered, locking dish (24) orientation fixedly connected with extends to locking post (241) in a fixed section of thick bamboo (33) on the lateral wall of a fixed section of thick bamboo (33), fixed column (31) are kept away from the confession has been seted up to the tip of motor (11) locking groove (242) that locking post (241) tip card was gone into, locking post (241) with be equipped with locking piece (4) between locking groove (242).

4. A centrifugal fan according to claim 3, wherein: seted up logical groove (2411) on locking post (241), locking piece (4) including run through in locking lever (41) of locking post (241), slide in locking piece (42) in logical groove (2411), first rack (411) of fixedly connected with on the lateral wall of locking lever (41), fixedly connected with on the lateral wall of locking piece (42) with second rack (421) that first rack (411) meshed mutually, set up on the cell wall of locking groove (242) with draw-in groove (422) of locking piece (42) looks joint, keeping away from in locking lever (41) the cross recess (412) has been seted up to the terminal surface of fixed column (31) one end.

5. A centrifugal fan according to claim 3, wherein: locking dish (24) back to one side of motor (11) is equipped with the cover fixed disk (25) of locking post (241), fixed disk (25) with locking dish (24) pass through bolted connection in on fixing base (2).

6. A centrifugal fan according to claim 2, wherein: fixing base (2) include with fixed plate (21), fixed connection that fixed cylinder (33) are connected in impeller (22), fixed connection on fixed plate (21) are in impeller (22) are kept away from fixed frame (23) of fixed plate (21) one end, fixed plate (21) with be equipped with a plurality of bracing piece (26) between fixed frame (23).

7. The centrifugal fan according to claim 6, wherein: the supporting rod (26) comprises a first reinforcing rod (261) which is connected with the fixing plate (21) through a bolt, a second reinforcing rod (262) which is connected with the fixing frame (23) through a bolt, and an adjusting pipe (263) which is connected between the first reinforcing rod (261) and the second reinforcing rod (262) through threads.

8. The centrifugal fan according to claim 7, wherein: the bracing piece (26) round the circumference lateral wall of fixed plate (21) be the slope set up in fixed plate (21) with between fixed frame (23).

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