CN210769413U - Low-noise centrifugal ventilator - Google Patents
Low-noise centrifugal ventilator Download PDFInfo
- Publication number
- CN210769413U CN210769413U CN201921472002.5U CN201921472002U CN210769413U CN 210769413 U CN210769413 U CN 210769413U CN 201921472002 U CN201921472002 U CN 201921472002U CN 210769413 U CN210769413 U CN 210769413U
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- China
- Prior art keywords
- fan
- fixedly connected
- fan shell
- motor
- fixing
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- Expired - Fee Related
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- 241000886569 Cyprogenia stegaria Species 0.000 claims abstract description 27
- 238000010521 absorption reaction Methods 0.000 claims description 11
- 239000000428 dust Substances 0.000 claims description 7
- 241000883990 Flabellum Species 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000001737 promoting effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of the fan technique and specifically relates to a low noise centrifugal fan, including the fan shell, the bottom fixedly connected with fixed establishment of fan shell, the air inlet has been seted up to one side of fan shell, the opposite side fixedly connected with motor of fan shell, the output fixedly connected with pivot of motor, the other end of pivot extends to in the fan shell, the other end fixedly connected with rotary impeller of pivot, a plurality of flabellum of rotary impeller's outside fixedly connected with, the slope tangent plane has all been seted up in the outside of every flabellum, the gas outlet has been seted up to one side of fan shell, the bottom of gas outlet is seted up flutedly, the recess in-connection has the second and inhales the sound pad, the fixed network has been placed to the top. The utility model discloses simple structure is worth promoting.
Description
Technical Field
The utility model relates to a fan technical field especially relates to a low noise centrifugal fan.
Background
Ventilators are widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, but the existing ventilators have high noise ratio, influence working environment and cause noise pollution.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem of the prior art that the noise is larger, and providing a low-noise centrifugal fan.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the design provides a low-noise centrifugal fan, including the fan shell, the bottom fixedly connected with fixed establishment of fan shell, the air inlet has been seted up to one side of fan shell, the opposite side fixedly connected with motor of fan shell, the output fixedly connected with pivot of motor, the other end of pivot extends to in the fan shell, the other end fixedly connected with rotary impeller of pivot, a plurality of flabellum of rotary impeller's outside fixedly connected with, every the slope tangent plane has all been seted up in the outside of flabellum, the gas outlet has been seted up to one side of fan shell, the bottom of gas outlet is seted up flutedly, the recess in-connection has the second and inhales the sound pad, the fixed net has been placed to the top of second and inhales the sound pad, the fixed net is fixed on the gas outlet.
Preferably, the fixing mechanism comprises a supporting seat, the supporting seat is fixed on the fan shell, and fixing holes are formed in two sides of the supporting seat.
Preferably, the air inlet is fixedly connected with a dust screen.
Preferably, one side of the fan shell is fixedly connected with a fixing block, the fixing block is located above the motor, an outer cover is arranged on the outer side of the motor and fixed on the fixing block, and a first sound absorption pad is fixedly connected to the inner side of the outer cover.
Preferably, the upper end of the outer cover is provided with a plurality of heat dissipation holes.
Preferably, the upper plane of the fixed net and the bottom plane of the air outlet are positioned on the same horizontal plane.
The utility model provides a pair of low noise centrifugal fan, beneficial effect lies in:
after the motor is powered on and started, the rotating shaft is driven to rotate, the rotating shaft drives the rotating impeller, the rotating impeller drives the fan blades, air is sucked into the fan shell through the air inlet, the phase of pulse airflow acting on the fan blades is staggered by the inclined tangent plane of the fan blades, the pulse force on the fan blades is reduced, the rotating noise of the fan is reduced, the noise generated by friction between the airflow flowing process and the inner wall of the fan shell is reduced by the first sound absorption pad in the air outlet, and the noise of the fan is low.
Drawings
Fig. 1 is a schematic structural view of a low-noise centrifugal fan according to the present invention;
fig. 2 is a schematic side view of a low-noise centrifugal fan according to the present invention;
fig. 3 is a rear view structure diagram of a low noise centrifugal fan provided by the present invention.
In the figure: the fan comprises a fan shell 1, a supporting seat 2, a fixing hole 3, an air inlet 4, a dust screen 5, a motor 6, a rotating shaft 7, a rotating impeller 8, fan blades 9, an inclined tangent plane 10, an outer cover 11, a first sound absorption pad 12, heat dissipation holes 13, a fixing block 14, an air outlet 15, a groove 16, a second sound absorption pad 17 and a fixing net 18.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Example 1
Referring to fig. 1-3, a low-noise centrifugal ventilator comprises a fan housing 1, a fixing mechanism is fixedly connected to the bottom end of the fan housing 1, the fixing mechanism is used for conveniently fixing a fan, the fixing mechanism comprises a support seat 2, the support seat 2 is fixed on the fan housing 1, fixing holes 3 are respectively formed in two sides of the support seat 2, an air inlet 4 is formed in one side of the fan housing 1, the air inlet 4 is used for sucking air into the fan, a dust screen 5 is fixedly connected to the air inlet 4, the dust screen 5 is used for preventing dust or particle impurities from entering the fan, a motor 6 is fixedly connected to the other side of the fan housing 1, a rotating shaft 7 is fixedly connected to the output end of the motor 6, the other end of the rotating shaft 7 extends into the fan housing 1, a rotating impeller 8 is fixedly connected to the other end of the rotating shaft 7, a plurality of fan blades 9 are fixedly connected to the outer, after the motor 6 is powered on and started, the rotating shaft 7 is driven to rotate, the rotating shaft 7 drives the rotating impeller 8, the rotating impeller 8 drives the fan blade 9, air is sucked into the fan shell 1 through the air inlet 4, the phase of pulse airflow acting on the fan blade 9 is staggered by the inclined tangent plane 10 of the fan blade 9, the pulse force on the fan blade 9 is reduced, and the rotating noise of the fan is reduced.
Example 2
Referring to fig. 1-3, as another preferred embodiment of the present invention, the difference from embodiment 1 lies in one side fixedly connected with fixed block 14 of fan shell 1, fixed block 14 is used for fixing outer cover 11, fixed block 14 is located above motor 6, the outside of motor 6 is equipped with outer cover 11, outer cover 11 is fixed on fixed block 14, the inboard fixedly connected with first sound absorbing pad 12 of outer cover 11, the effect of first sound absorbing pad 12 is used for absorbing the noise that produces in the working process of motor 6, a plurality of louvre 13 has been seted up to the upper end of outer cover 11.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A low-noise centrifugal fan comprises a fan shell (1) and is characterized in that a fixing mechanism is fixedly connected to the bottom end of the fan shell (1), an air inlet (4) is formed in one side of the fan shell (1), a motor (6) is fixedly connected to the other side of the fan shell (1), a rotating shaft (7) is fixedly connected to the output end of the motor (6), the other end of the rotating shaft (7) extends into the fan shell (1), a rotating impeller (8) is fixedly connected to the other end of the rotating shaft (7), a plurality of fan blades (9) are fixedly connected to the outer side of the rotating impeller (8), an inclined tangent plane (10) is formed in each fan blade (9), an air outlet (15) is formed in one side of the fan shell (1), a groove (16) is formed in the bottom end of the air outlet (15), and a second sound absorbing pad (17) is connected to the groove (16), a fixing net (18) is arranged above the second sound absorption pad (17), and the fixing net (18) is fixed on the air outlet (15).
2. A low-noise centrifugal fan according to claim 1, wherein the fixing mechanism comprises a support base (2), the support base (2) is fixed on the fan casing (1), and fixing holes (3) are formed in both sides of the support base (2).
3. A low noise centrifugal fan according to claim 1, wherein a dust screen (5) is fixedly attached to the air inlet (4).
4. A low noise centrifugal fan according to claim 1, wherein a fixing block (14) is fixedly connected to one side of the fan casing (1), the fixing block (14) is located above the motor (6), a cover (11) is arranged on the outer side of the motor (6), the cover (11) is fixed on the fixing block (14), and a first sound absorption pad (12) is fixedly connected to the inner side of the cover (11).
5. A low noise centrifugal fan according to claim 4, wherein the upper end of the housing (11) is provided with a plurality of heat dissipating holes (13).
6. A low noise centrifugal fan according to claim 1, wherein the upper plane of the fixing net (18) is on the same horizontal plane as the bottom end plane of the air outlet (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921472002.5U CN210769413U (en) | 2019-09-05 | 2019-09-05 | Low-noise centrifugal ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921472002.5U CN210769413U (en) | 2019-09-05 | 2019-09-05 | Low-noise centrifugal ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210769413U true CN210769413U (en) | 2020-06-16 |
Family
ID=71063784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921472002.5U Expired - Fee Related CN210769413U (en) | 2019-09-05 | 2019-09-05 | Low-noise centrifugal ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210769413U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343851A (en) * | 2020-11-23 | 2021-02-09 | 徐露云 | Low-noise centrifugal ventilator |
-
2019
- 2019-09-05 CN CN201921472002.5U patent/CN210769413U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343851A (en) * | 2020-11-23 | 2021-02-09 | 徐露云 | Low-noise centrifugal ventilator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200616 |