CN202811547U - Low noise fan - Google Patents
Low noise fan Download PDFInfo
- Publication number
- CN202811547U CN202811547U CN 201220500586 CN201220500586U CN202811547U CN 202811547 U CN202811547 U CN 202811547U CN 201220500586 CN201220500586 CN 201220500586 CN 201220500586 U CN201220500586 U CN 201220500586U CN 202811547 U CN202811547 U CN 202811547U
- Authority
- CN
- China
- Prior art keywords
- fan
- air inlet
- noise
- outer cover
- acoustical cotton
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility air inlet model relates to a low noise fan comprising a fan, a square net, an outer cover and sound absorption cotton. One side of the square net is fixed in the position of an air inlet of the fan, the outer cover is fixed on the other side of the square net, the sound absorption cotton is placed in the outer cover and is provided with a centre open hole, the size of the centre open hole of the sound absorption cotton is in accordance with the size of the air inlet of the fan, and the sound absorption cotton is in a multi-hole and loose structure. According to the low noise fan, due to the fact that a sound absorption cotton structure is additionally arranged on the air inlet of the fan, flow noise of the air inlet of the fan can be effectively absorbed by the sound absorption cotton structure, fan system noise in the prior art is reduced.
Description
Technical field
The utility model relates to a kind of low-noise fan.
Background technique
Be widely used blower fan in industrial production, blower fan is the supplement production equipment of commonly using, and is mainly used in also seeing blower fan in ventilation and the dust removal apparatus in heat dissipation equipment.Blower fan at work, air-flow enters blade space by air inlet, then under the driving of blade, forms wind and out does work.
What the intake grill of existing market fan adopted is the mode of direct air intake; usually take simple square net design at the intake grill place of blower fan; though square net can block foreign material inspiration blower fan and protection people's safety, but effective control noise value, the reducing noise weak effect.
Therefore, in order to solve above technical problem, being necessary to have now design improves, design a kind of blower fan with the acoustical cotton structure, it is a kind of low-noise fan that the utility model provides, this blower fan can effectively absorb the air inlet pneumatic noise, reduces blower fan system noise in the prior art.
The model utility content
The technical problems to be solved in the utility model is: a kind of low-noise fan is provided, the acoustical cotton structure is added to the intake grill place of blower fan, utilize this kind structure can reduce system noise 2-3dB (A).
In order to overcome the defective that exists in the background technique, the technological scheme that its technical problem that solves the utility model adopts is: a kind of low-noise fan, comprise blower fan, square net, outer cover and acoustical cotton, described square net one side is fixed on the intake grill place of blower fan, the opposite side of square net is fixed with outer cover, be placed with the acoustical cotton of center drilling in the described outer cover, the size of described acoustical cotton center drilling and air inlet in the same size, described acoustical cotton is porous loose structure.
The utility model has solved the defective that exists in the background technique, because the intake grill at blower fan has installed the acoustical cotton structure additional, so that the related a kind of low-noise fan of the utility model can effectively absorb the air inlet pneumatic noise, reduce blower fan system noise in the prior art.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the internal structure schematic representation of a kind of low-noise fan of the utility model;
Wherein: 1, blower fan; 2, square net; 3, outer cover; 4, acoustical cotton.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.The schematic representation of accompanying drawing for simplifying basic structure of the present utility model only is described in a schematic way, so it only shows the formation relevant with the utility model.
See also Fig. 1, a kind of low-noise fan, comprise blower fan 1, square net 2, outer cover 3 and acoustical cotton 4, described square net 2 one sides are fixed on the intake grill place of blower fan 1, the opposite side of square net is fixed with outer cover 3, be placed with the acoustical cotton 4 of center drilling in the described outer cover 3, size and the air inlet in the same size of described acoustical cotton (4) center drilling, described acoustical cotton 4 is porous loose structure.
The acoustical cotton of middle perforate is fixed on air inlet, can effectively absorbs around the intake grill because the pneumatic noise that the air dielectric flow at high speed produces.This acoustical cotton can adopt the sound-absorbing material of porosity and looseness to form, and in order to improve sound-absorbing effect, acoustical cotton 4 can be tried one's best greatly.The outer center drilling of this acoustical cotton can keep consistent with the centrifugal fan intake grill, like this, neither increases the resistance at air inlet place, can effectively reduce noise again.
A kind of low-noise fan that the utility model provides by the acoustical cotton structure being added to the intake grill place of blower fan, can effectively absorb the air inlet pneumatic noise, reduces blower fan system noise 2-3dB (A) in the prior art.
Claims (3)
1. low-noise fan, comprise blower fan (1), square net (2), outer cover (3) and acoustical cotton (4), it is characterized in that: described square net (2) one sides are fixed on the intake grill place of blower fan (1), the opposite side of square net is fixed with outer cover (3), is placed with the acoustical cotton (4) of center drilling in the described outer cover (3).
2. a kind of low-noise fan according to claim 1 is characterized in that: size and the air inlet in the same size of described acoustical cotton (4) center drilling.
3. a kind of low-noise fan according to claim 1 and 2, it is characterized in that: described acoustical cotton (4) is porous loose structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220500586 CN202811547U (en) | 2012-09-28 | 2012-09-28 | Low noise fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220500586 CN202811547U (en) | 2012-09-28 | 2012-09-28 | Low noise fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202811547U true CN202811547U (en) | 2013-03-20 |
Family
ID=47870429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220500586 Expired - Fee Related CN202811547U (en) | 2012-09-28 | 2012-09-28 | Low noise fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202811547U (en) |
-
2012
- 2012-09-28 CN CN 201220500586 patent/CN202811547U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104132003A (en) | Silencer of positive pressure ventilation equipment | |
| CN202139046U (en) | Oxygen generator with sound absorption and heat dissipation functions | |
| CN102688638A (en) | Air filter | |
| CN202811547U (en) | Low noise fan | |
| CN203068727U (en) | Air-exhausting and noise-eliminating channel | |
| CN202628611U (en) | Cooling fan of air conditioner outdoor unit | |
| CN202531449U (en) | Low-noise fan component for inverter power supply and inverter power supply using component | |
| CN204153879U (en) | A kind of VMC purifier with convex surface filter screen | |
| CN203271869U (en) | Silencer | |
| CN203175684U (en) | Generator unit box | |
| CN201934380U (en) | Fan blade of ventilation fan | |
| CN201997206U (en) | Air filter | |
| CN208734577U (en) | A kind of air-cooler ventilation fan | |
| CN109215627A (en) | Efficient noise elimination elbow | |
| CN203560063U (en) | Acoustic shield of air compressor | |
| CN206017194U (en) | The fan of small size air cleaner | |
| CN208333153U (en) | A kind of cooling tower for aluminum profile processing | |
| CN203463377U (en) | Low-noise axial flow fan | |
| CN202659591U (en) | Noise-reducing device for biomass boiler | |
| CN206817685U (en) | A kind of noise reduction ventilator | |
| CN201853482U (en) | Silencing exhaust hood | |
| CN206168103U (en) | Clarifier filter cartridge fixing device's improvement structure | |
| CN202867281U (en) | Exhaust fan | |
| CN203413739U (en) | External hanging dustproof net for outdoor unit of air conditioner | |
| CN207487083U (en) | Bowl-type air door with acoustical cotton layer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Patent of Suzhou Huarui Thermal Control Technology Co.,Ltd. The person in charge Document name: Notice of termination of patent right |
|
| 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: 20130320 Termination date: 20210928 |