CN204371714U - A kind of noise reduction fans - Google Patents
A kind of noise reduction fans Download PDFInfo
- Publication number
- CN204371714U CN204371714U CN201420732327.3U CN201420732327U CN204371714U CN 204371714 U CN204371714 U CN 204371714U CN 201420732327 U CN201420732327 U CN 201420732327U CN 204371714 U CN204371714 U CN 204371714U
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- CN
- China
- Prior art keywords
- impeller
- blower fan
- motor
- top shell
- noise reduction
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of noise reduction fans, comprise heat-insulation chamber, blade, silencing net, impeller, electric line outlets, blower fan top shell, motor, blower fan drain pan, fire protection pipe, air inlet and fan outlet.Described motor is fixed on the inwall of blower fan drain pan, motor is placed in heat-insulation chamber, a fire protection pipe is provided with between heat-insulation chamber and impeller, described impeller is fixedly installed on the main shaft of motor, impeller is provided with two blades, for to be welded and fixed or bolt is fixed between blade and impeller, fire protection pipe is fireproof metal flexible pipe.Described fan outlet is positioned at impeller side, described air inlet is positioned at motor side, the electric line outlets of a motor is provided with above described blower fan top shell, blower fan top shell both sides are provided with silencing net, silencing net is galvanized sheet punching silencing net, mean transmission loss is 36DB, and average sound absorption coefficient is 0.8.The utility model has that structure is simple, good muffling effect, lower-cost advantage.
Description
Technical field
The utility model relates to ventilator technical field, particularly relates to a kind of noise reduction fans.
Background technique
Blower fan is that the custom of China to gas compression and gas conveying machinery is called for short, and usually said blower fan comprises ventilator, blower, wind-driven generator.Gas compression and gas conveying machinery are that the mechanical energy rotated is converted to gas pressure energy and kinetic energy, and the machinery that gas is transferred out.Blower fan is widely used in factory, mine, tunnel, cooling tower, the ventilation of boats and ships and building, dust discharge and cooling; The ventilation of boiler and industrial furnace and air inducing; Cooling in the apparatus of air conditioning and domestic electric appliance and ventilation; The oven dry of cereal and selecting and recommending; The inflation of wind-tunnel wind regime and Hovercraft and propelling etc.The working principle of blower fan is substantially identical with turbocompressor, and just because gas flow rate is lower, pressure change is little, does not generally need the change considering gas specific volume, namely using gas as incompressible fluid process.
Along with more and more higher to environmental requirement of people, the reduction noise of people to blower fan it is also proposed requirement higher, many noise-damping ventilating machines are in order to reduce noise regardless of expense existingly, be even that ventilator is equipped with reducing noise equipment specially in order to abate the noise, some then spends a lot of thought in order to reduce noise in the structure of blower fan, and this just makes the cost of production of noise reduction fans very high and complex structure.
Model utility content
Technical problem to be solved in the utility model is for above-mentioned the deficiencies in the prior art, provides a kind of noise reduction fans, and the utility model has that structure is simple, good muffling effect, lower-cost advantage.
The technical solution of the utility model is: a kind of noise reduction fans, comprise heat-insulation chamber, blade, silencing net, impeller, electric line outlets, blower fan top shell, motor, blower fan drain pan, fire protection pipe, air inlet and fan outlet, it is characterized in that: described motor is fixed on the inwall of blower fan drain pan, motor is placed in heat-insulation chamber, a fire protection pipe is provided with between heat-insulation chamber and impeller, be mutually permanently connected by fire protection pipe between heat-insulation chamber and impeller, described impeller is fixedly installed on the main shaft of motor, impeller is provided with two blades, to be connected or bolt is fixedly connected with for being welded and fixed between blade with impeller, described fan outlet is positioned at impeller side, described air inlet is positioned at motor side, the electric line outlets of a motor is provided with above described blower fan top shell, blower fan top shell both sides are equipped with silencing net.
Further, the electric line outlets that the electric wire that the top of described blower fan top shell is provided with electric motor is come in and gone out.
Further, described motor is fixedly installed on the inwall of blower fan drain pan.
Further, described fire protection pipe is arranged between heat-insulation chamber and impeller, and fire protection pipe is fireproof metal flexible pipe.
Further, described impeller being provided with two blades, being connected or bolt is fixedly connected with for being welded and fixed between blade with impeller.
Further, the material of described blower fan top shell and blower fan drain pan is glass fibre reinforced plastics or aluminum alloy.
Further, described blower fan top shell both sides are equipped with silencing net, and silencing net is galvanized sheet punching silencing net, and mean transmission loss is 36DB, and average sound absorption coefficient is 0.8.
The beneficial effects of the utility model are: comprise heat-insulation chamber, blade, silencing net, impeller, electric line outlets, blower fan top shell, motor, blower fan drain pan, fire protection pipe, air inlet and fan outlet.Described motor is fixed on the inwall of blower fan drain pan, motor is placed in heat-insulation chamber, a fire protection pipe is provided with between heat-insulation chamber and impeller, described impeller is fixedly installed on the main shaft of motor, impeller is provided with two blades, for to be welded and fixed or bolt is fixed between blade and impeller, fire protection pipe is fireproof metal flexible pipe.Described fan outlet is positioned at impeller side, described air inlet is positioned at motor side, the electric line outlets of a motor is provided with above described blower fan top shell, blower fan top shell both sides are provided with silencing net, silencing net is galvanized sheet punching silencing net, mean transmission loss is 36DB, average sound absorption coefficient is 0.8, galvanized sheet punching silencing net has good water resistence, heat resistance, uvioresistant, performance or quality abnormal can not be reduced because rainwater temperature variation causes, galvanized sheet adopts aluminum alloy roll bending, zinc-plated roll bending, glass wool, the anticorrosion time limit of H steel column plating zinc on surface process can reach more than 15 years.The material of described blower fan top shell and blower fan drain pan is glass fibre reinforced plastics or aluminum alloy, has good corrosion protection, abrasionproof undermines resistance to high temperature.The utility model has that structure is simple, good muffling effect, lower-cost advantage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein: 1, heat-insulation chamber 2, blade 3, silencing net
4, impeller 5, electric line outlets 6, blower fan top shell
7, motor 8, blower fan drain pan 9, air inlet
10, fan outlet 11, fire protection pipe
Embodiment
Below in conjunction with accompanying drawing, brief description is made to embodiment of the present utility model.
As shown in Figure 1, a kind of noise reduction fans, comprise heat-insulation chamber 1, blade 2, silencing net 3, impeller 4, electric line outlets 5, blower fan top shell 6, motor 7, blower fan drain pan 8, fire protection pipe 11, air inlet 9 and fan outlet 10, it is characterized in that: described motor 7 is fixed on the inwall of blower fan drain pan 8, motor 7 is placed in heat-insulation chamber 1, a fire protection pipe 11 is provided with between heat-insulation chamber 1 and impeller 4, be mutually permanently connected by fire protection pipe 11 between heat-insulation chamber 1 and impeller 4, described impeller 4 is fixedly installed on the main shaft of motor 7, impeller 4 is provided with two blades 2, to be connected or bolt is fixedly connected with for being welded and fixed between blade 2 with impeller 4, described fan outlet 10 is positioned at impeller 4 side, described air inlet 9 is positioned at motor side, the electric line outlets 5 of a motor is provided with above described blower fan top shell 6, blower fan top shell 6 both sides are equipped with silencing net 3.
Above embodiment, only in order to the technical solution of the utility model to be described, can not limit scope of the present utility model with this; To the amendment that the technological scheme described in foregoing embodiments is carried out, or to the equivalent replacement that wherein portion of techniques feature is carried out, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment's technological scheme of the utility model, all should still belong in scope that the utility model patent contains.
Claims (7)
1. noise reduction fans, comprise heat-insulation chamber, blade, silencing net, impeller, electric line outlets, blower fan top shell, motor, blower fan drain pan, fire protection pipe, air inlet and fan outlet, it is characterized in that: described motor is fixed on the inwall of blower fan drain pan, motor is placed in heat-insulation chamber, a fire protection pipe is provided with between heat-insulation chamber and impeller, be mutually permanently connected by fire protection pipe between heat-insulation chamber and impeller, described impeller is fixedly installed on the main shaft of motor, impeller is provided with two blades, to be connected or bolt is fixedly connected with for being welded and fixed between blade with impeller, described fan outlet is positioned at impeller side, described air inlet is positioned at motor side, the electric line outlets of a motor is provided with above described blower fan top shell, blower fan top shell both sides are equipped with silencing net.
2. according to a kind of noise reduction fans described in claim 1, it is characterized in that: the top of described blower fan top shell is provided with the electric line outlets of the electric wire discrepancy of electric motor.
3. according to a kind of noise reduction fans described in claim 1, it is characterized in that: described motor is fixedly installed on the inwall of blower fan drain pan.
4. according to a kind of noise reduction fans described in claim 1, it is characterized in that: described fire protection pipe is arranged between heat-insulation chamber and impeller, fire protection pipe is fireproof metal flexible pipe.
5. according to a kind of noise reduction fans described in claim 1, it is characterized in that: described impeller is provided with two blades, to be connected or bolt is fixedly connected with for being welded and fixed between blade with impeller.
6. according to a kind of noise reduction fans described in claim 1, it is characterized in that: the material of described blower fan top shell and blower fan drain pan is glass fibre reinforced plastics or aluminum alloy.
7. according to a kind of noise reduction fans described in claim 1, it is characterized in that: described blower fan top shell both sides are equipped with silencing net, silencing net is galvanized sheet punching silencing net, and mean transmission loss is 36DB, and average sound absorption coefficient is 0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420732327.3U CN204371714U (en) | 2014-11-27 | 2014-11-27 | A kind of noise reduction fans |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420732327.3U CN204371714U (en) | 2014-11-27 | 2014-11-27 | A kind of noise reduction fans |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204371714U true CN204371714U (en) | 2015-06-03 |
Family
ID=53327938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420732327.3U Expired - Fee Related CN204371714U (en) | 2014-11-27 | 2014-11-27 | A kind of noise reduction fans |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204371714U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107006989A (en) * | 2015-12-11 | 2017-08-04 | 戴森技术有限公司 | Motor and the hand-held product with motor |
-
2014
- 2014-11-27 CN CN201420732327.3U patent/CN204371714U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107006989A (en) * | 2015-12-11 | 2017-08-04 | 戴森技术有限公司 | Motor and the hand-held product with motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20150603 Termination date: 20181127 |