CN215333538U

CN215333538U - High stability low noise centrifugal fan

Info

Publication number: CN215333538U
Application number: CN202121322470.1U
Authority: CN
Inventors: 张木根
Original assignee: Shaoxing Shangyu Big Triangle Fan Co ltd
Current assignee: Shaoxing Shangyu Big Triangle Fan Co ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-12-28
Anticipated expiration: 2031-06-11

Abstract

The utility model discloses a high-stability low-noise centrifugal fan which comprises a casing, wherein a motor is fixedly arranged on one side of the casing, a snap ring is fixedly arranged on the surface of the other side of the casing, a filter screen is movably arranged in the snap ring, a rotating wheel is movably arranged in the casing, blades are fixedly arranged on the surface of one side of the rotating wheel, a connecting base is fixedly arranged on the surface of the other side of the rotating wheel, a fixed block is movably arranged at one end of the motor, a connecting groove is formed in the surface of one side of the connecting base, the fixed block penetrates through the surface of one side of the casing, and the connecting block is movably connected with the connecting base through the connecting groove. The high-stability low-noise centrifugal fan can fractionate airflow sucked from the suction inlet to the inner side of the blade when the blade rotates, so that the airflow is prevented from directly colliding to the surface of the turntable, the noise generated when the turntable drives the blade to rotate is reduced, the fan has dustproof capacity, and the fan is more convenient to disassemble, clean and maintain.

Description

High stability low noise centrifugal fan

Technical Field

The utility model relates to the field of fans, in particular to a high-stability low-noise centrifugal fan.

Background

When the fan works, airflow axially enters the blade space from the fan, and then rotates along with the impeller under the driving of the impeller; on the other hand, the fan which increases energy under the action of inertia, leaves the impeller along the radius direction, works by the generated centrifugal force is called a centrifugal fan, the centrifugal fan accelerates gas by utilizing the impeller rotating at high speed according to the principle that kinetic energy is converted into potential energy, then decelerates and changes the flow direction, so that the kinetic energy is converted into the potential energy, in the single-stage centrifugal fan, the gas enters the impeller from the axial direction, the gas changes into the radial direction when flowing through the impeller, then enters a diffuser, in the diffuser, the gas changes the flow direction to cause deceleration, the deceleration action converts the kinetic energy into pressure energy, the pressure increase mainly occurs in the impeller, and then occurs in the diffusion process; the existing centrifugal fan has certain defects when in use, the blades suck air flow from the suction inlet when rotating, the air flow directly collides with the surface of the turntable, noise is generated when the turntable drives the blades to rotate, and the fan does not have dustproof capacity and is not convenient to disassemble, clean and maintain.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a high-stability low-noise centrifugal fan which can effectively solve the problems in the background technology.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a high stability low noise centrifugal fan, includes the casing, casing one side fixed mounting has the motor, casing opposite side surface fixed mounting has the snap ring, the inside movable mounting of snap ring has the filter screen, the inside movable mounting of casing has the runner, runner one side surface fixed mounting has the blade, runner opposite side surface fixed mounting has the connection base, motor one end movable mounting has the fixed block.

Preferably, a connecting groove is formed in the surface of one side of the connecting base, the fixing block penetrates through the surface of one side of the casing, and the connecting block is movably connected with the connecting base through the connecting groove.

Preferably, one side surface of the shell is located below the motor and fixedly provided with a support frame, the surface of the motor is fixedly provided with a fixed block, and the fixed block is fixedly connected with the support frame.

Preferably, a conical block is fixedly mounted on one side surface of the rotating wheel, which is located in the middle of the blade, the upper end and the lower end of the blade are bent towards the inner side of the blade, and the bending angle of the upper end of the blade is larger than that of the lower end of the blade.

Preferably, the filter screen surface is symmetrically and fixedly provided with clamping blocks, the clamping grooves are symmetrically formed in the surface of the clamping ring, and the clamping blocks are movably connected with the clamping ring through the clamping grooves.

Preferably, a limiting base is fixedly embedded in the surface of one side of the filter screen, and one end of the conical block is movably connected with the limiting base through a groove in the surface of one side of the limiting base.

Compared with the prior art, the utility model has the following beneficial effects:

in the utility model, the rotating wheel is arranged in the shell, the connecting block is clamped in the connecting groove, the filter screen is clamped in the clamping ring, the clamping block is embedded in the clamping groove, the top end of the conical block is inserted into the groove on the surface of one side of the limiting base, then the filter screen is rotated clockwise to fix the filter screen and the clamping ring, the limiting base and the connecting block clamp the rotating wheel to prevent the rotating wheel from falling off, otherwise, the filter screen is rotated counterclockwise to separate the clamping block from the clamping groove, so that the filter screen is disassembled, then the rotating wheel is taken out from the shell through the movable connection of the connecting block and the connecting groove, so that the cleaning of the filter screen and the rotating wheel is carried out, the disassembling difficulty of the filter screen and the rotating wheel is reduced, the filter screen and the rotating wheel are convenient to disassemble and clean, when in use, the motor drives the rotating wheel to rotate the blades, air enters the shell through the filter screen, the conical block disperses the air and guides the air to the inner side of the blades, follow the runner and rotate the air outlet discharge through the upper end, avoid the air directly to collide to the runner, when reducing the air striking runner, the noise that the blade rotated the production, simultaneously, the filter screen filters through the dust in the air, avoids inside the dust gets into the casing, reduces the inside clearance degree of difficulty of casing.

Drawings

FIG. 1 is a schematic view of the overall structure of a high stability low noise centrifugal fan according to the present invention;

FIG. 2 is a structural exploded view of a high stability low noise centrifugal fan according to the present invention;

FIG. 3 is a disassembled view of the structure of the filter screen and the clamp ring of the high-stability low-noise centrifugal fan according to the present invention;

fig. 4 is a disassembled view of the structure of the rotating wheel and the motor of the high-stability low-noise centrifugal fan.

In the figure: 1. a housing; 101. a support frame; 2. a motor; 201. a fixed block; 202. connecting blocks; 3. filtering with a screen; 301. a clamping block; 302. a limiting base; 4. a rotating wheel; 401. a blade; 402. a conical block; 403. connecting a base; 404. connecting grooves; 5. a snap ring; 501. a clamping groove.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

As shown in fig. 1-4, a high-stability low-noise centrifugal fan includes a casing 1, a motor 2 is fixedly installed on one side of the casing 1, a snap ring 5 is fixedly installed on the other side surface of the casing 1, a filter screen 3 is movably installed in the snap ring 5, a rotating wheel 4 is movably installed in the casing 1, a blade 401 is fixedly installed on one side surface of the rotating wheel 4, a connecting base 403 is fixedly installed on the other side surface of the rotating wheel 4, and a fixing block 201 is movably installed at one end of the motor 2;

a connecting groove 404 is formed in the surface of one side of the connecting base 403, the fixing block 201 penetrates through the surface of one side of the casing 1, and the connecting block 202 is movably connected with the connecting base 403 through the connecting groove 404; a supporting frame 101 is fixedly arranged on the surface of one side of the machine shell 1 below the motor 2, a fixed block 201 is fixedly arranged on the surface of the motor 2, and the fixed block 201 is fixedly connected with the supporting frame 101; the conical block 402 is fixedly arranged on the surface of one side of the rotating wheel 4, which is positioned in the middle of the blade 401, the upper end and the lower end of the blade 401 are bent towards the inner side of the blade 401, the bending angle of the upper end of the blade 401 is larger than that of the lower end, the conical block 402 disperses air, the air is guided into the inner side of the blade 401 and is discharged through an air outlet at the upper end along with the rotation of the rotating wheel 4, the air is prevented from directly colliding with the rotating wheel 4, and the noise generated by the rotation of the blade 401 when the air collides with the rotating wheel 4 is reduced; the clamping blocks 301 are symmetrically and fixedly installed on the surface of the filter screen 3, the clamping grooves 501 are symmetrically formed in the surface of the clamping ring 5, the clamping blocks impact the clamp 1 and are movably connected with the clamping ring 5 through the clamping grooves 501, the disassembling difficulty of the filter screen 3 and the rotating wheel 4 is reduced, and the filter screen 3 and the rotating wheel 4 are convenient to disassemble and clean; limiting base 302 is installed to filter screen 3 one side fixed embedding in surface, and circular cone piece 402 one end is through the recess and the limiting base 302 swing joint of limiting base 302 one side surface, and limiting base 302 and connecting block 202 clip runner 4, prevent that runner 4 from droing.

It should be noted that, in the high-stability low-noise centrifugal fan, when mounting, the rotating wheel 4 is mounted inside the casing 1, the connecting block 202 is clamped inside the connecting groove 404, the filter screen 3 is clamped inside the clamping ring 5, the clamping block 301 is embedded inside the clamping groove 501, the top end of the conical block 402 is inserted into the groove on the surface of one side of the limiting base 302, then the filter screen 3 is rotated clockwise, the filter screen 3 and the clamping ring 5 are fixed, the rotating wheel 4 is clamped by the limiting base 302 and the connecting block 202 to prevent the rotating wheel 4 from falling off, otherwise, the filter screen 3 is rotated counterclockwise, the clamping block 301 is separated from the clamping groove 501 to dismount the filter screen 3, then the rotating wheel 4 is taken out from the casing 1 through the movable connection of the connecting block 202 and the connecting groove 404, thereby the filter screen 3 and the rotating wheel 4 are cleaned, the difficulty in dismounting the filter screen 3 and the rotating wheel 4 is reduced, and the filter screen 3 and the rotating wheel 4 are convenient to dismount and clean, when using, motor 2 drives runner 4 and rotates, make blade 401 rotate, inside the air got into casing 1 through filter screen 3, circular cone piece 402 disperses the air, with the leading-in blade 401 inboard of air, it discharges to follow the air outlet of runner 4 rotation through the upper end, avoid the air directly to hit runner 4, when reducing the air and hitting quick-witted runner 4, blade 401 rotates the noise that produces, and simultaneously, filter screen 3 filters through the dust in the air, avoid the dust to get into inside casing 1, reduce the inside striking degree of difficulty of casing 1.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a high stability low noise centrifugal fan which characterized in that: including casing (1), casing (1) one side fixed mounting has motor (2), casing (1) opposite side fixed mounting surface has snap ring (5), snap ring (5) inside movable mounting has filter screen (3), casing (1) inside movable mounting has runner (4), runner (4) one side fixed mounting surface has blade (401), runner (4) opposite side fixed mounting surface has connection base (403), motor (2) one end movable mounting has fixed block (201).

2. A high stability low noise centrifugal fan according to claim 1, wherein: connecting groove (404) has been seted up to connection base (403) one side surface, fixed block (201) run through casing (1) one side surface, connecting block (202) pass through connecting groove (404) with connect base (403) swing joint.

3. A high stability low noise centrifugal fan according to claim 1, wherein: casing (1) one side surface is located motor (2) below fixed mounting has support frame (101), motor (2) fixed surface installs fixed block (201), fixed block (201) with support frame (101) fixed connection.

4. A high stability low noise centrifugal fan according to claim 1, wherein: the surface of one side of the rotating wheel (4) is positioned in the middle of the blade (401) and is fixedly provided with a conical block (402), the upper end and the lower end of the blade (401) are bent towards the inner side of the blade (401), and the bending angle of the upper end of the blade (401) is larger than that of the lower end.

5. A high stability low noise centrifugal fan according to claim 1, wherein: the filter screen (3) surface symmetry fixed mounting has fixture block (301), draw-in groove (501) have been seted up to snap ring (5) surface symmetry, fixture block (301) pass through draw-in groove (501) with snap ring (5) swing joint.

6. A high stability low noise centrifugal fan according to claim 4, wherein: limiting base (302) are installed in the fixed embedding of filter screen (3) one side surface, circular cone piece (402) one end pass through the recess of limiting base (302) one side surface with limiting base (302) swing joint.