CN213235511U - Low-noise openable centrifugal fan - Google Patents
Low-noise openable centrifugal fan Download PDFInfo
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- CN213235511U CN213235511U CN202022194438.1U CN202022194438U CN213235511U CN 213235511 U CN213235511 U CN 213235511U CN 202022194438 U CN202022194438 U CN 202022194438U CN 213235511 U CN213235511 U CN 213235511U
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Abstract
The utility model relates to an open-type centrifugal fan of low noise, including spiral case, protecgulum, back lid, air inlet interface and air-out interface, there is the motor fixed plate through hinged joint on the right side wall of back lid, is fixed with the motor on the motor fixed plate, and the left end output shaft end connection of motor has to insert and establishes the inside impeller of spiral case. The utility model discloses an open-type centrifugal fan structural design of low noise is reasonable, and the plate body inside of spiral case, protecgulum, back lid and spiral tongue all sets up the amortization cotton, can reduce the noise of fan itself by a wide margin to the whole pneumatic noise of fan has been reduced: in addition, the motor fixing plate is movably connected with the rear cover through the hinge, the impeller is taken out by opening the motor fixing plate during maintenance, the maintenance is convenient, and meanwhile, the working efficiency is also improved.
Description
Technical Field
The utility model relates to a low-noise openable centrifugal fan.
Background
With the development and progress of the society, the requirements of people on working environment, service environment and the like are continuously improved, the requirements on noise are higher and higher, and the main sources of noise in the use process of the fan are mechanical noise, motor noise, pneumatic noise and the like. At present, a plurality of methods for reducing the noise of the fan are adopted, and a sound deadening box, a silencer and the like are mainly added. And after the existing oil smoke exhaust fan used in a kitchen is used for a period of time, the normal use effect of the fan is influenced because the impeller is adhered with oil stains. The impeller is cleaned after the fan is disassembled, which is inconvenient.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a low noise's open-type centrifugal fan.
The utility model discloses an open-type centrifugal fan of low noise, including spiral case, protecgulum, back lid, air inlet interface and air-out interface, there is the motor fixed plate through hinged joint on the right side wall of back lid, is fixed with the motor on the motor fixed plate, and the left end output shaft end connection of motor has to insert and establishes the inside impeller of spiral case.
The utility model discloses an open-type centrifugal fan of low noise, the spiral case includes outer snail board and interior snail board, is equipped with first amortization cotton between interior snail board and the outer snail board, and the inside of spiral case is equipped with the snail tongue corresponding with the air-out interface, and the tongue internal portion of snail tongue sets up the second amortization cotton.
The utility model discloses an open-type centrifugal fan of low noise, the protecgulum includes protecgulum planking and protecgulum inner panel, is equipped with the third noise elimination cotton between protecgulum inner panel and the protecgulum planking.
The utility model discloses an open-type centrifugal fan of low noise, the back lid covers planking and back lid inner panel including the back, and it is cotton to be equipped with the fourth amortization between back lid inner panel and the back lid planking.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an open-type centrifugal fan structural design of low noise is reasonable, and the plate body inside of spiral case, protecgulum, back lid and spiral tongue all sets up the amortization cotton, can reduce the noise of fan itself by a wide margin to the whole pneumatic noise of fan has been reduced: in addition, the motor fixing plate is movably connected with the rear cover through the hinge, the impeller is taken out by opening the motor fixing plate during maintenance, the maintenance is convenient, and meanwhile, the working efficiency is also improved.
Drawings
Fig. 1 is a schematic structural diagram of a low-noise openable centrifugal fan according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of a low-noise openable centrifugal fan according to an embodiment of the present invention;
fig. 3 is a third schematic structural diagram of a low-noise openable centrifugal fan according to an embodiment of the present invention;
fig. 4 is a fourth schematic structural diagram of a low-noise openable centrifugal fan according to an embodiment of the present invention.
In the figure:
1. a volute; 101. an outer volute plate; 102. an inner scroll plate; 103. first noise reduction cotton; 104. a volute tongue; 105. second silencing cotton; 2. a front cover; 201. a front cover outer plate; 202. a front cover inner plate; 203. third sound-eliminating cotton; 3. a rear cover; 301. a rear cover outer plate; 302. a rear cover inner plate; 303. fourth noise reduction cotton; 4. an air inlet interface; 5. an air outlet interface; 6. a hinge; 7. a motor fixing plate; 8. a motor; 9. an impeller.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1-4, a low-noise openable centrifugal fan includes a volute 1, a front cover 2, a rear cover 3, an air inlet port 4, and an air outlet port 5, wherein a motor fixing plate 7 is connected to a right side wall of the rear cover 3 through a hinge 6, a motor 8 is fixed to the motor fixing plate 7, and an impeller 9 inserted into the volute 1 is connected to an end portion of an output shaft at a left end of the motor 8.
The utility model discloses an open-type centrifugal fan of low noise, spiral case 1 includes outer snail board 101 and interior snail board 102, is equipped with first amortization cotton 103 between interior snail board 102 and the outer snail board 101, and spiral case 1's inside is equipped with the snail tongue 104 corresponding with air-out interface 5, and the tongue internal portion of snail tongue 104 sets up second amortization cotton 105.
The utility model discloses an open-type centrifugal fan of low noise, protecgulum 2 includes protecgulum planking 201 and protecgulum inner panel 202, is equipped with third noise elimination cotton 203 between protecgulum inner panel 202 and the protecgulum planking 201.
The utility model discloses an open-type centrifugal fan of low noise, back lid 3 covers planking 301 and back lid inner panel 302 including the back, is equipped with fourth amortization cotton 303 between back lid inner panel 302 and the back lid planking 301.
The utility model discloses an open-type centrifugal fan structural design of low noise is reasonable, and the plate body inside of spiral case, protecgulum, back lid and spiral tongue all sets up the amortization cotton, can reduce the noise of fan itself by a wide margin to the whole pneumatic noise of fan has been reduced: in addition, the motor fixing plate is movably connected with the rear cover through the hinge, the impeller is taken out by opening the motor fixing plate during maintenance, the maintenance is convenient, and meanwhile, the working efficiency is also improved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (4)
1. The utility model provides a low noise's open-type centrifugal fan, includes spiral case (1), protecgulum (2), back lid (3), air inlet interface (4) and air-out interface (5), its characterized in that: the right side wall of the rear cover (3) is connected with a motor fixing plate (7) through a hinge (6), a motor (8) is fixed on the motor fixing plate (7), and the end part of a left end output shaft of the motor (8) is connected with an impeller (9) inserted into the volute (1).
2. A low noise centrifugal fan of claim 1, wherein: the volute (1) comprises an outer volute plate (101) and an inner volute plate (102), first silencing cotton (103) is arranged between the inner volute plate (102) and the outer volute plate (101), a volute tongue (104) corresponding to the air outlet interface (5) is arranged inside the volute (1), and second silencing cotton (105) is arranged inside a tongue body of the volute tongue (104).
3. A low noise centrifugal fan of claim 1, wherein: the front cover (2) comprises a front cover outer plate (201) and a front cover inner plate (202), and third silencing cotton (203) is arranged between the front cover inner plate (202) and the front cover outer plate (201).
4. A low noise centrifugal fan of claim 1, wherein: the rear cover (3) comprises a rear cover outer plate (301) and a rear cover inner plate (302), and fourth silencing cotton (303) is arranged between the rear cover inner plate (302) and the rear cover outer plate (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022194438.1U CN213235511U (en) | 2020-09-27 | 2020-09-27 | Low-noise openable centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022194438.1U CN213235511U (en) | 2020-09-27 | 2020-09-27 | Low-noise openable centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213235511U true CN213235511U (en) | 2021-05-18 |
Family
ID=75877748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022194438.1U Active CN213235511U (en) | 2020-09-27 | 2020-09-27 | Low-noise openable centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213235511U (en) |
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2020
- 2020-09-27 CN CN202022194438.1U patent/CN213235511U/en active Active
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