CN203051241U - High-efficient low-noise draught fan - Google Patents
High-efficient low-noise draught fan Download PDFInfo
- Publication number
- CN203051241U CN203051241U CN 201320031546 CN201320031546U CN203051241U CN 203051241 U CN203051241 U CN 203051241U CN 201320031546 CN201320031546 CN 201320031546 CN 201320031546 U CN201320031546 U CN 201320031546U CN 203051241 U CN203051241 U CN 203051241U
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- intaker
- inlet device
- air inlet
- air
- impeller
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Abstract
The utility model aims to provide a high-efficient low-noise draught fan which is composed of a machine shell, an impeller, an air inlet device, a control damper and a transmission group, wherein the air inlet device is arranged between an inlet end of the impeller and the control damper. The key point is that the air inlet device is composed of an outer air inlet device and an inner air inlet device, wherein the diameter of the outer air inlet device is larger than that of the inner air inlet device, and the outer air inlet device is sleeved on the periphery of the inner air inlet device. The high-efficient low-noise draught fan modifies the control damper, the air inlet device, the machine shell and the impeller, reduces using noises of the whole draught fan, improves using efficiency of the draught fan, achieves energy-saving and environment-friendly purposes, and has a good practicability.
Description
Technical field
The invention belongs to fluid machinery class field, specially refer to a kind of high-efficient low-noise blower fan.
Background technique
Blower fan is a kind of machinery that the energy of prime mover is changed into gas energy, generally is used for industries such as mine, chemical industry, cement, environmental protection dedusting, weaving, and purposes is wider, and the domestic output value is bigger, and state's inner blower output value reached 73,000,000,000 yuan in 2011.The use amount of conventional fan is big, and power consumption is big, and noise pollution is serious, and the blower fan of therefore developing environmental protection low noise, efficient energy-saving has become the most important thing of China's blower fan development.
Specifically, the typical structure of blower fan is that impeller is housed in the casing, the casing entrance point is equipped with damper, between impeller and the damper air-intaker is arranged, air-flow from damper is collected in the impeller by air-intaker, be expelled in the casing at a high speed by impeller acting back, in casing, discharge casing behind the diffusion.When air-intaker imports to air-flow in the impeller, because the tapering of air-intaker is bigger, the intake grill of air-intaker and the vary in diameter of exhaust outlet are bigger, form bigger horn shape, not only amplified noise, excessive horn-like contraction is easier to also make that the air-flow and the main MEDIA FLOW generation in the impeller channel that import are turbulent, causes the decrease in efficiency of main MEDIA FLOW, and then has reduced the efficient of blower fan.
Summary of the invention
The objective of the invention is to propose a kind of high-efficient low-noise blower fan.
High-efficient low-noise blower fan of the present invention is made of casing, impeller, air-intaker, damper, transmission group, and described air-intaker is arranged between the entrance point and damper of impeller; Key is that described air-intaker is made of external air inlet device and interior air-intaker, and the diameter of described external air inlet device is greater than the diameter of interior air-intaker, and the external air inlet device is placed in the periphery of interior air-intaker.
Above-mentioned high-efficient low-noise blower fan utilizes external air inlet device and interior air-intaker air intake, air-intaker forms an air intake passage like this, form an air intake passage between external air inlet device and the interior air-intaker, all the contraction ratio than the single air-intaker of tradition is little for the air intake flow of two air intake passages and the contraction ratio of air-out flow, therefore the loss of air-flow is reduced, and under the rectified action of interior air-intaker, turbulent flow be reduced.After the bigger horn shape of original single air-intaker was cut apart by interior air-intaker noise amplification effect simultaneously, noise reduced, and flow efficiency is improved.Particularly work at the blower fan small flow, when air-flow can not be full of air-intaker, turbulent flow is bigger, but dual rectification and guide functions current downflow efficient at inside and outside air-intaker improve, fan characteristic when having improved small flow, make pressure and the efficient of this moment also obtain to improve, improved the characteristic curve of blower fan simultaneously.
Further, the angle between described interior air-intaker sidewall and the interior air-intaker axis is less than the angle between described external air inlet device sidewall and the external air inlet device axis.Can make the air intake passage between the inside and outside air-intaker be bell mouth shape like this, promote the rectification wind effect.
Further, described interior air-intaker is straight-tube shape or bell mouth shape, and the air-flow in the equal so internally air-intaker is put in order and wind-guiding.
Further, the inwall of described damper, external air inlet device, interior air-intaker, casing and the surface of impeller all are pasted with elastic rubber layer, and elastic rubber layer can play the noise elimination effect, to reduce noise.
High-efficient low-noise blower fan of the present invention improves damper, air-intaker, casing and impeller, has reduced the use noise of complete blower, has improved the utilization efficiency of blower fan, has reached the purpose of energy-saving and environmental protection, has good practicability.
Description of drawings
Fig. 1 is the structural representation of embodiment 1 high-efficient low-noise blower fan.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the effect of the mutual alignment between the shape of the specific embodiment of the present invention such as related each member, structure, the each several part and annexation, each several part and working principle etc. are described in further detail.
Embodiment 1:
As shown in the figure, the high-efficient low-noise blower fan of present embodiment is made of casing 1, impeller 2, air-intaker, damper 3, transmission group 4, and described air-intaker is arranged between the entrance point and damper 3 of impeller 2; Key is that described air-intaker is made of the external air inlet device 5 that is bell mouth shape and interior air-intaker 6, and the angle between interior air-intaker 6 sidewalls and interior air-intaker 6 axis is less than the angle between described external air inlet device 5 sidewalls and external air inlet device 5 axis; The diameter of described external air inlet device 5 is greater than the diameter of interior air-intaker 6, and external air inlet device 5 is placed in the periphery of interior air-intaker 6.
The inwall of damper 3, external air inlet device 5, interior air-intaker 6, casing 1 and the surface of impeller 2 all are pasted with elastic rubber layer, and elastic rubber layer can play the noise elimination effect, to reduce noise.
Above-mentioned high-efficient low-noise blower fan utilizes external air inlet device 5 and interior air-intaker 6 air intakes, air-intaker 6 forms an air intake passage like this, form an air intake passage between external air inlet device 5 and the interior air-intaker 6, two air intake passages are bell mouth shape, and the contraction ratio of both air intake flows and the air-out flow all contraction ratio than the single air-intaker of tradition is little, therefore the loss of air-flow is reduced, and under the rectified action of interior air-intaker 6, turbulent flow be reduced.After the bigger horn shape of original single air-intaker was cut apart by interior air-intaker 6 noise amplification effect simultaneously, noise reduced, and flow efficiency is improved.Particularly work at the blower fan small flow, when air-flow can not be full of air-intaker, turbulent flow is bigger, but dual rectification and guide functions current downflow efficient at inside and outside air-intaker improve, fan characteristic when having improved small flow, make pressure and the efficient of this moment also obtain to improve, improved the characteristic curve of blower fan simultaneously.
Claims (4)
1. a high-efficient low-noise blower fan is made of casing, impeller, air-intaker, damper, transmission group, and described air-intaker is arranged between the entrance point and damper of impeller; It is characterized in that described air-intaker is made of external air inlet device and interior air-intaker, the diameter of described external air inlet device is greater than the diameter of interior air-intaker, and the external air inlet device is placed in the periphery of interior air-intaker.
2. high-efficient low-noise blower fan according to claim 1, it is characterized in that described in angle between air-intaker sidewall and the interior air-intaker axis less than the angle between described external air inlet device sidewall and the external air inlet device axis.
3. high-efficient low-noise blower fan according to claim 2 is characterized in that described interior air-intaker is straight-tube shape or bell mouth shape.
4. according to claim 1 or 2 or 3 described high-efficient low-noise blower fans, it is characterized in that the inwall of described damper, external air inlet device, interior air-intaker, casing and the surface of impeller all are pasted with elastic rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320031546 CN203051241U (en) | 2013-01-22 | 2013-01-22 | High-efficient low-noise draught fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320031546 CN203051241U (en) | 2013-01-22 | 2013-01-22 | High-efficient low-noise draught fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203051241U true CN203051241U (en) | 2013-07-10 |
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ID=48734199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320031546 Expired - Fee Related CN203051241U (en) | 2013-01-22 | 2013-01-22 | High-efficient low-noise draught fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203051241U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047194A (en) * | 2013-01-22 | 2013-04-17 | 安徽安风风机有限公司 | Efficient low-noise fan |
-
2013
- 2013-01-22 CN CN 201320031546 patent/CN203051241U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047194A (en) * | 2013-01-22 | 2013-04-17 | 安徽安风风机有限公司 | Efficient low-noise fan |
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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 |
Granted publication date: 20130710 Termination date: 20160122 |
|
| EXPY | Termination of patent right or utility model |