CN103790868A - Fan noise elimination structure - Google Patents
Fan noise elimination structure Download PDFInfo
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- CN103790868A CN103790868A CN201210425385.7A CN201210425385A CN103790868A CN 103790868 A CN103790868 A CN 103790868A CN 201210425385 A CN201210425385 A CN 201210425385A CN 103790868 A CN103790868 A CN 103790868A
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- Prior art keywords
- noise elimination
- noise reduction
- blower fan
- cone
- elimination structure
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Abstract
A fan noise elimination structure comprises fans, an air inlet pipe and an exhaust pipe and is characterized by further comprising a barrel-shaped silencer. The barrel-shaped silencer comprises a barrel-shaped housing, a noise elimination layer, a noise elimination cone and a noise elimination cone support. The noise elimination layer is sticked on the inner wall of the barrel-shaped housing. The middle of the noise elimination cone is a cylinder, two ends of the cylinder are respectively connected with a conical body, and the bottom face of the conical body is connected with the end face of the cylinder. The noise elimination cone is connected in a hollow cavity of the barrel-shaped housing through the noise elimination cone support, and the axis of the noise elimination cone is identical to the axis of the barrel-shaped housing. Two open ends of the barrel-shaped silencer are respectively connected between exhaust ports of the fans and an air inlet of the exhaust pipe. The fan noise elimination structure is high in noise elimination effect, a noise elimination value can reach to 20-30 decibels, resistance loss is also small, the high-pressure fan is a 40mm water column, and the low-pressure is a 10mm water column. In addition, the fan noise elimination structure is simple, light in weight, few in consumed materials and convenient to install. The fan noise elimination structure is directly connected to the exhaust ports of the fans and suitable for various fans.
Description
Technical field
The technical program belongs to silencing apparatus technical field, specifically a kind of blower fan noise elimination structure that is applicable to blower fan.
Background technique
In prior art, in industrial and mining enterprise's production process, the noise that blower fan produces is one of main noise.The general method adopting is, is the pedestal of blower fan isolation ground with padded coaming.This method is that blower fan is rotated and produces noise and ground isolation, can partly eliminate the energy that produces noise.But, because another part noise of blower fan is that wind is made an uproar, said method concerning wind is made an uproar, erasure effect and limited.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the technical program proposes a kind of new blower fan noise elimination structure, comprises blower fan, air intake pipe and exhaust duct, it is characterized in that also comprising tubular silencing apparatus; Described tubular silencing apparatus comprises cylindrical outer casing, noise reduction layer, noise reduction cone and noise reduction cone support; Described noise reduction laminating is on the inwall of cylindrical outer casing; The centre of described noise reduction cone is cylindrical body, is connected with respectively taper at cylindrical body two ends, and the bottom surface of taper is connected with cylindrical end face; Described noise reduction cone is bored support by noise reduction and is connected in the hollow cavity of cylindrical outer casing, and the axis of noise reduction cone is identical with the axis of cylindrical outer casing;
Between the two opening ends difference exhaust ports of connecting fan and the intake grill of exhaust duct of tubular silencing apparatus.
Described noise reduction cone support has two groups, lays respectively at two opening ends of cylindrical outer casing, and the summit place of two noise reduction cones is connected with a noise reduction cone support respectively.
Described noise reduction cone comprises coated housing and packing material; Described packing material is in coated housing, and through hole gathers in encasement surface.
Described noise reduction layer comprises coated housing and packing material; Described packing material is in coated housing, and through hole gathers in encasement surface.
Described packing material is rock wool, and filling density is 60Kg/m
3.
Two opening ends of described cylindrical outer casing are connected with flange.
Between the intake grill of described blower fan and the exhaust outlet of air intake pipe, be connected by bendable elastomer connector; Between exhaust port tubular silencing apparatus and blower fan, be connected by bendable elastomer connector.
This noise elimination structure soundproof effect is higher, and its noise elimination value can reach 20～30 decibels, and drag losses is also very little, and high pressure positive blower is 40 column, and fan with low voltage is 10 column; Simultaneously simple in structure, lightweight, consumptive material is few, easy for installation.This silencing apparatus is directly connected to the exhaust outlet of blower fan, is applicable to multiple blower fan.In addition, in this noise elimination structure, blower fan all connect bendable elastomer connector into and out of air port, also can eliminate a part of motor oscillating by being flexible coupling.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the technical program;
Fig. 2 is the axial section schematic diagram of tubular silencing apparatus;
Fig. 3 is an opening end schematic diagram of tubular silencing apparatus;
In figure: cylindrical outer casing 1, noise reduction layer 2, noise reduction cone 3, noise reduction cone support 4, taper 5, flange 6; Blower fan 7, air intake pipe 8, exhaust duct 9, tubular silencing apparatus 10, bendable elastomer connector 11.
Embodiment
Further illustrate the technical program below in conjunction with accompanying drawing and embodiment:
A new blower fan noise elimination structure, comprises blower fan, air intake pipe and exhaust duct, also comprises tubular silencing apparatus; Described tubular silencing apparatus comprises cylindrical outer casing, noise reduction layer, noise reduction cone and noise reduction cone support; Described noise reduction laminating is on the inwall of cylindrical outer casing; The centre of described noise reduction cone is cylindrical body, is connected with respectively taper at cylindrical body two ends, and the bottom surface of taper is connected with cylindrical end face; Described noise reduction cone is bored support by noise reduction and is connected in the hollow cavity of cylindrical outer casing, and the axis of noise reduction cone is identical with the axis of cylindrical outer casing;
Between the two opening ends difference exhaust ports of connecting fan and the intake grill of exhaust duct of tubular silencing apparatus.
Described noise reduction cone support has two groups, lays respectively at two opening ends of cylindrical outer casing, and the summit place of two noise reduction cones is connected with a noise reduction cone support respectively.
Described noise reduction cone comprises coated housing and packing material; Described packing material is in coated housing, and through hole gathers in encasement surface.
Described noise reduction layer comprises coated housing and packing material; Described packing material is in coated housing, and through hole gathers in encasement surface.
Described packing material is rock wool, and filling density is 60Kg/m
3.
Two opening ends of described cylindrical outer casing are connected with flange.
Between the intake grill of described blower fan and the exhaust outlet of air intake pipe, be connected by bendable elastomer connector; Between exhaust port tubular silencing apparatus and blower fan, be connected by bendable elastomer connector.
Claims (7)
1. a blower fan noise elimination structure, comprises blower fan, air intake pipe and exhaust duct, it is characterized in that also comprising tubular silencing apparatus; Described tubular silencing apparatus comprises cylindrical outer casing, noise reduction layer, noise reduction cone and noise reduction cone support; Described noise reduction laminating is on the inwall of cylindrical outer casing; The centre of described noise reduction cone is cylindrical body, is connected with respectively taper at cylindrical body two ends, and the bottom surface of taper is connected with cylindrical end face; Described noise reduction cone is bored support by noise reduction and is connected in the hollow cavity of cylindrical outer casing, and the axis of noise reduction cone is identical with the axis of cylindrical outer casing;
Between the two opening ends difference exhaust ports of connecting fan and the intake grill of exhaust duct of tubular silencing apparatus.
2. blower fan noise elimination structure according to claim 1, is characterized in that described noise reduction cone support has two groups, lays respectively at two opening ends of cylindrical outer casing, and the summit place of two noise reduction cones is connected with a noise reduction cone support respectively.
3. blower fan noise elimination structure according to claim 1, is characterized in that described noise reduction cone comprises coated housing and packing material; Described packing material is in coated housing, and through hole gathers in encasement surface.
4. blower fan noise elimination structure according to claim 1, is characterized in that described noise reduction layer comprises coated housing and packing material; Described packing material is in coated housing, and through hole gathers in encasement surface.
5. according to the blower fan noise elimination structure described in claim 3 or 4, it is characterized in that described packing material is rock wool, filling density is 60Kg/m
3.
6. blower fan noise elimination structure according to claim 1, is characterized in that two opening ends of described cylindrical outer casing are connected with flange.
7. blower fan noise elimination structure according to claim 1, is characterized in that being connected by bendable elastomer connector between the intake grill of described blower fan and the exhaust outlet of air intake pipe; Between exhaust port tubular silencing apparatus and blower fan, be connected by bendable elastomer connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210425385.7A CN103790868A (en) | 2012-10-31 | 2012-10-31 | Fan noise elimination structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210425385.7A CN103790868A (en) | 2012-10-31 | 2012-10-31 | Fan noise elimination structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103790868A true CN103790868A (en) | 2014-05-14 |
Family
ID=50666831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210425385.7A Pending CN103790868A (en) | 2012-10-31 | 2012-10-31 | Fan noise elimination structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103790868A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084467A (en) * | 2017-06-29 | 2017-08-22 | 广东电网有限责任公司中山供电局 | A kind of noise-reduction method of SF6 electric equipment chambers exhaust system |
-
2012
- 2012-10-31 CN CN201210425385.7A patent/CN103790868A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084467A (en) * | 2017-06-29 | 2017-08-22 | 广东电网有限责任公司中山供电局 | A kind of noise-reduction method of SF6 electric equipment chambers exhaust system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140514 |