CN212296954U

CN212296954U - Low-noise backward-inclined blade type centrifugal fan

Info

Publication number: CN212296954U
Application number: CN202020633417.2U
Authority: CN
Inventors: 罗珏; 俞文兴
Original assignee: Shaoxing Shangyu Blower Fan Sales Co ltd
Current assignee: Shaoxing Shangyu Blower Fan Sales Co ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2021-01-05
Anticipated expiration: 2030-04-24

Abstract

The utility model relates to a low noise hypsokinesis blade type centrifugal fan. The conventional blade structure design of the existing centrifugal fan not only produces large wind noise in the actual operation process, but also can vibrate the whole fan shell to influence the use. Because the fixing reliability is poor, the fan is easy to produce and vibrate greatly, noise is generated, and the reliable operation of the fan is not facilitated. The utility model discloses a fan shell, its characterized in that fan shell's center sets up the impeller, the impeller include the rim plate main part, the center of rim plate main part sets up the baffle, the both sides of baffle are crisscross to be set up a plurality of blades, the blade encircle and towards the direction of rotation hypsokinesis setting along the rim plate main part, fan shell be noise reduction type box. The utility model discloses fan blade structural design is reasonable, reduces the wind and makes an uproar and the vibrations when moving, and overall structure is steady reliable, has the shock attenuation effect, the noise reduction.

Description

Low-noise backward-inclined blade type centrifugal fan

Technical Field

The utility model relates to a fan technical field, in particular to low noise hypsokinesis vane type centrifugal fan.

Background

The conventional blade structure design of the existing centrifugal fan not only produces large wind noise in the actual operation process, but also can vibrate the whole fan shell to influence the use. Because the fixing reliability is poor, the fan is easy to produce and vibrate greatly, noise is generated, and the reliable operation of the fan is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a low noise hypsokinesis vane type centrifugal fan, fan blade structural design is reasonable, reduces the wind and makes an uproar and the vibrations when moving, and overall structure is steady reliable, has the shock attenuation effect, the noise reduction.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a low noise hypsokinesis vane type centrifugal fan, includes the fan shell, its characterized in that the center of fan shell sets up the impeller, the impeller include the rim plate main part, the center of rim plate main part sets up the baffle, the both sides of baffle are crisscross to be set up a plurality of blades, the blade encircle and towards the direction of rotation hypsokinesis setting along the rim plate main part, the fan shell be noise reduction type box.

A supporting frame is arranged outside the fan shell, and two spring hanger devices are arranged at the top of the supporting frame.

The spring hanger device comprises an outer frame, wherein the lower portion of the outer frame is provided with a threaded connecting rod, the upper half portion of the threaded connecting rod is inserted into the outer frame, the outer portion of the threaded connecting rod of the portion is surrounded by a spring, the lower end of the spring is abutted against the outer frame, the upper end of the spring is abutted against a limiting check ring, the limiting check ring is connected to the upper end of the threaded connecting rod, and the lower portion of the threaded connecting rod is further provided with a connecting nut.

The supporting frame comprises a bottom standing foot, and a horizontal supporting block is arranged between the two standing feet.

The fan shell is provided with a plurality of silencers on the inner wall.

The frame of fan shell is hollow structure, and hollow structure intussuseption is inhaled the sound cotton.

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

1. the impeller center sets up the baffle, and the both sides at the baffle are crisscross to be set up a plurality of blades, and the blade is towards the structure that the direction of rotation hypsokinesis set up, and this kind of structure can effectively reduce wind and make an uproar, and the air-out is more steady also

2. The blower housing is integrally and reliably supported by the supporting frame, and the frame is stably arranged on the opposite surface and is stably positioned.

3. The supporting top is provided with a spring hanger device, the top of the device can be selectively fixed and hoisted, and the shock generated during the operation of the fan is further reduced due to the spring shock absorption function.

4. The outer shell of the fan is a silencing box body, a silencer is arranged on the inner wall of the outer shell, silencing cotton is arranged in the hollow inner wall of the outer shell, and noise is further reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the middle spring hanger device of the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1 and 2, the low-noise retroverted blade type centrifugal fan comprises a fan shell 6, wherein an impeller is arranged at the center of the fan shell, the impeller comprises a wheel disc main body 3, a partition plate 4 is arranged at the center of the wheel disc main body, a plurality of blades 5 are arranged on two sides of the partition plate in a staggered mode, the blades are arranged around the wheel disc main body and retroverted towards the rotating direction, and the fan shell is a silencing type box body.

A supporting frame 13 is arranged outside the fan shell, and two spring hanger devices are arranged at the top of the supporting frame. The spring hanger device comprises an outer frame 12, wherein a threaded connecting rod 8 is arranged at the lower part of the outer frame, the upper half part of the threaded connecting rod is inserted into the outer frame, a spring 9 is arranged outside the threaded connecting rod in a surrounding mode, the lower end of the spring is abutted against the outer frame, the upper end of the spring is abutted against a limiting check ring 10, the limiting check ring is connected to the upper end of the threaded connecting rod, and a connecting nut 14 is further arranged at the lower part of the threaded connecting rod. The top of the outer frame is provided with a mounting hole 11.

The supporting frame comprises a bottom standing foot 1, and a horizontal supporting block 2 is arranged between the two standing feet. The blower housing is provided with a plurality of silencers 7 on the inner wall. The frame of fan shell is hollow structure, and hollow structure intussuseption is inhaled the sound cotton.

The utility model discloses a fan sets up the baffle at the impeller center, and crisscross a plurality of blades that set up in the both sides of baffle, and the blade is towards the structure that the direction of rotation hypsokinesis set up, and this kind of structure can effectively reduce wind and make an uproar, and the air-out is also more steady. The blower housing is integrally and reliably supported by the supporting frame, and the frame is stably arranged on the opposite surface and is stably positioned. The supporting top is provided with a spring hanger device, the top of the device can be selectively fixed and hoisted, and the shock generated during the operation of the fan is further reduced due to the spring shock absorption function. The outer shell of the fan is a silencing box body, a silencer is arranged on the inner wall of the outer shell, silencing cotton is arranged in the hollow inner wall of the outer shell, and noise is further reduced.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a low noise hypsokinesis vane type centrifugal fan, includes the fan shell, its characterized in that the center of fan shell sets up the impeller, the impeller include the rim plate main part, the center of rim plate main part sets up the baffle, the both sides of baffle are crisscross to be set up a plurality of blades, the blade encircle and towards the direction of rotation hypsokinesis setting along the rim plate main part, the fan shell be noise reduction type box.

2. The fan of claim 1, wherein a support frame is disposed outside the fan casing, and two spring hanger devices are disposed on the top of the support frame.

3. The low-noise backward inclined blade type centrifugal fan as claimed in claim 2, wherein the spring hanger device comprises an outer frame, a threaded connection rod is arranged at the lower part of the outer frame, the upper half part of the threaded connection rod is inserted into the outer frame, a spring is arranged around the outer part of the threaded connection rod, the lower end of the spring abuts against the outer frame, the upper end of the spring abuts against a limit check ring, the limit check ring is connected to the upper end of the threaded connection rod, and a connection nut is further arranged at the lower part of the threaded connection rod.

4. The fan of claim 3 wherein the support frame comprises a bottom leg with a horizontal support block disposed therebetween.

5. The fan of claim 4 wherein the fan housing has a plurality of silencers on an inner wall.

6. The centrifugal fan according to claim 5, wherein the frame of the fan casing is a hollow structure filled with sound-absorbing cotton.