CN207161385U - A kind of silenced fan - Google Patents
A kind of silenced fan Download PDFInfo
- Publication number
- CN207161385U CN207161385U CN201721051487.1U CN201721051487U CN207161385U CN 207161385 U CN207161385 U CN 207161385U CN 201721051487 U CN201721051487 U CN 201721051487U CN 207161385 U CN207161385 U CN 207161385U
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- China
- Prior art keywords
- inner cylinder
- casing
- puigging
- woven fabrics
- fan
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- 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.)
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Abstract
The utility model discloses a kind of silenced fan, motor including fan casing, in casing and the impeller being connected with machine shaft, casing is double-decker, casing includes inner cylinder and outer barrel, and the inner cylinder is provided with several through holes, and the cavity with gap is formed between inner cylinder and outer barrel, the puigging of acoustic material making is filled with the cavity, the outer wall of the inner cylinder is provided with non-woven fabrics, and non-woven fabrics is between puigging and inner cylinder, wheel rotation（Blower fan）Caused noise is absorbed by the through hole on inner cylinder by puigging, improves soundproof effect, and non-woven fabrics avoids leaking for noise elimination cotton.
Description
Technical field
It the utility model is related to blower fan technical field, more particularly to a kind of silenced fan.
Background technology
Blower fan is widely used in the ventilation, dust discharge and cooling of factory, mine, tunnel, cooling tower, vehicle, ship and building,
The ventilation of boiler and industrial furnace and air inducing；Cooling and ventilation in the apparatus of air conditioning and domestic electric appliance；The baking of cereal
Do and select and recommend, inflation and propulsion of wind-tunnel wind regime and aircushion vehicle etc..
Caused noise usually turns into influence worker to blower fan in operation and interference environment quietly brings disaster upon source, severe jamming people
Normal work and rest so that turn into public hazards.And blower fan is discrete (rotation)：It is relevant with the rotation of impeller.Especially at a high speed,
In the case of underload, this noise is especially prominent.The noise of casing and motor can solve by installing acoustic hood additional, by blower fan
It is placed in independent blower fan isolation booth, is absorbed sound in blower fan, sound insulation processing.Silencer is installed outside blower fan exhaust outlet,
Built-in noise elimination inserted sheet, make noise by being cut down during the silencer of special tectonic.Silencer is to reduce air powered equipment to enter, arrange
Gas port radiates or the effective measures along pipe passing noise.Existing noise elimination processing structure is complex, and effect is poor.
China Patent No. is 00267095.X, discloses a kind of low noise centrifugal ventilator for air conditioner, there is framework, framework connection
Fan casing, it is characterised in that：Silencing apparatus, machine are housed in casing inner wall loaded on main shaft built with impeller, impeller in casing
The silencing apparatus being equipped with shell inwall uses noise elimination spiral case plate.Above-mentioned utility model installs noise elimination spiral case plate additional in casing, and it disappears
Sound effective value is poor, and it is inconvenient to safeguard.
Utility model content
The defects of in order to overcome prior art, the utility model, which has aimed to provide, a kind of can effectively obstruct what blower fan was sent
Noise.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：
A kind of silenced fan, including fan casing, the motor in casing and the impeller being connected with machine shaft, its
It is characterised by：The casing is double-decker, and casing includes inner cylinder and outer barrel, and the inner cylinder is provided with several through holes, inner cylinder
The cavity with gap is formed between outer barrel, the puigging of acoustic material making is filled with the cavity, the inner cylinder
Outer wall is provided with non-woven fabrics, and non-woven fabrics is between puigging and inner cylinder.Casing is double-decker, and casing is including inner cylinder and outside
Cylinder.Or an inner cylinder can be installed additional in former casing（Former casing is outer barrel）, the sky of wheel rotation is left between impeller and inner cylinder
Gap.The cavity with gap is formed between inner cylinder and outer barrel, the puigging of acoustic material making, impeller are filled with the cavity
Rotate（Blower fan）Caused noise is absorbed by the through hole on inner cylinder by puigging, while non-woven fabrics avoids leaking for puigging.
Described non-woven fabrics is pasted onto on the outer wall of inner cylinder.
Described puigging is made up of noise elimination cotton material.
The thickness of described puigging is 40cm.
The utility model has advantages below：
1st, the utility model casing is double-decker, and casing includes inner cylinder and outer barrel, and the inner cylinder is logical provided with several
Hole, the cavity with gap is formed between inner cylinder and outer barrel, the puigging of acoustic material making is filled with the cavity, it is described
The outer wall of inner cylinder is provided with non-woven fabrics, and non-woven fabrics is between puigging and inner cylinder.Being formed between inner cylinder and outer barrel has gap
Cavity, the puigging of acoustic material making, wheel rotation are filled with cavity（Blower fan）Caused noise passes through on inner cylinder
Through hole is absorbed by puigging, while non-woven fabrics avoids leaking for puigging.Fan noise can greatly reduce, the principle of this measure
It is dissipative muffler, blower fan, which is equal to, to be placed among a dissipative muffler.Dissipative muffler is Commercial cultivation sound wave in porous
Propagate in sound-absorbing material or sound absorption structure, dissipated because acoustic energy is converted into heat energy by friction, make noise along pipe transmmision with
Distance and decay, so as to reach noise elimination purpose.
2nd, non-woven fabrics of the present utility model is pasted onto on the outer wall of inner cylinder；Puigging be made up of noise elimination cotton material, it is described
The thickness of puigging be 40cm, material, and the selection of puigging thickness, further increase the effect of blower fan noise reduction.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Marked in figure：1st, casing, 2, motor, 3, impeller, 4, inner cylinder, 5, through hole, 6, puigging, 7, non-woven fabrics.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings：
Embodiment 1
As shown in figure 1, a kind of silenced fan, including fan casing 1, motor 2 and and machine shaft in casing 1
The impeller 3 of connection, casing 1 are double-decker, and the casing 1 of double-decker includes inner cylinder 4 and outer barrel（Or installed additional in former casing
One inner cylinder, former casing are outer barrel, and the space of wheel rotation is left between impeller and inner cylinder）.It is logical provided with several on inner cylinder 4
Hole 5, the cavity with gap is formed between inner cylinder 4 and outer barrel（That is interlayer）, acoustic material making is filled with the cavity
Puigging 6, puigging are made up of noise elimination cotton material, and the thickness of puigging is 40cm.
Further, non-woven fabrics 7 is provided with the outer wall of inner cylinder 4, non-woven fabrics 7 is between puigging 6 and inner cylinder 4.Nothing
Cloth is spun to be pasted onto on the outer wall of inner cylinder.
Its operation principle is wheel rotation（Blower fan）Caused noise is absorbed by the through hole on inner cylinder by puigging, together
When non-woven fabrics avoid puigging（That is noise elimination cotton）Leak, fan noise can greatly reduce, and the principle of this measure is resistive disappears
Sound device, blower fan, which is equal to, to be placed among a dissipative muffler.Dissipative muffler is Commercial cultivation sound wave in porous sound-absorbing material
Or propagated in sound absorption structure, dissipated because acoustic energy is converted into heat energy by friction, make to decline with distance along the noise of pipe transmmision
Subtract, so as to reach noise elimination purpose.
Claims (4)
1. a kind of silenced fan, including fan casing (1), the motor (2) in casing (1) and connect with motor (2) rotating shaft
The impeller (3) connect, it is characterised in that：The casing (1) is double-decker, and casing (1) includes inner cylinder (4) and outer barrel, described interior
Cylinder (4) is provided with several through holes (5), and inner cylinder (4) forms the cavity with gap between outer barrel, is filled with the cavity
The puigging (6) that acoustic material makes, the outer wall of the inner cylinder (4) are provided with non-woven fabrics (7), and non-woven fabrics (7) is located at puigging
(6) between inner cylinder (4).
A kind of 2. silenced fan according to claim 1, it is characterised in that：Described non-woven fabrics (7) is pasted onto inner cylinder (4)
Outer wall on.
A kind of 3. silenced fan according to claim 1, it is characterised in that：Described puigging (6) is noise elimination cotton material
It is made.
A kind of 4. silenced fan according to claim 1, it is characterised in that：The thickness of described puigging (6) is 40cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721051487.1U CN207161385U (en) | 2017-08-22 | 2017-08-22 | A kind of silenced fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721051487.1U CN207161385U (en) | 2017-08-22 | 2017-08-22 | A kind of silenced fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207161385U true CN207161385U (en) | 2018-03-30 |
Family
ID=61718079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721051487.1U Active CN207161385U (en) | 2017-08-22 | 2017-08-22 | A kind of silenced fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207161385U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709044A (en) * | 2018-05-23 | 2018-10-26 | 中国空气动力研究与发展中心低速空气动力研究所 | A kind of pressure piping flow rectifying silencer |
| CN109674361A (en) * | 2018-09-26 | 2019-04-26 | 浙江绍兴苏泊尔生活电器有限公司 | Cooking machine host and cooking machine including the host |
-
2017
- 2017-08-22 CN CN201721051487.1U patent/CN207161385U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709044A (en) * | 2018-05-23 | 2018-10-26 | 中国空气动力研究与发展中心低速空气动力研究所 | A kind of pressure piping flow rectifying silencer |
| CN109674361A (en) * | 2018-09-26 | 2019-04-26 | 浙江绍兴苏泊尔生活电器有限公司 | Cooking machine host and cooking machine including the host |
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