CN207750291U - A kind of combined type muffler plate for high-speed centrifugal fan cabinet - Google Patents
A kind of combined type muffler plate for high-speed centrifugal fan cabinet Download PDFInfo
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- CN207750291U CN207750291U CN201721869595.XU CN201721869595U CN207750291U CN 207750291 U CN207750291 U CN 207750291U CN 201721869595 U CN201721869595 U CN 201721869595U CN 207750291 U CN207750291 U CN 207750291U
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- combined type
- centrifugal fan
- speed centrifugal
- type muffler
- plate
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Abstract
The utility model discloses a kind of combined type muffler plates for high-speed centrifugal fan cabinet, including cold-reduced sheet, macromolecule damping felt, acoustical cotton, non-woven fabrics and galvanized sheet, pass through glue adhesion between the macromolecule damping felt and cold-reduced sheet, after acoustical cotton is by non-woven wraps, paving is pressed on macromolecule damping felt, is connected by screw between galvanized sheet and cold-reduced sheet.The utility model can play the effect being complementary to one another to noise reduction, and sound insulation effect is good, simple in structure, be easy to make, especially notable to the medium, high frequency noise effects for inhibiting high-speed centrifugal fan.
Description
Technical field：
The utility model is related to a kind of combined type muffler plates for high-speed centrifugal fan cabinet.
Background technology：
High-speed centrifugal fan uses the floating or empty floating axle of magnetic and holds and high-speed permanent magnetic synchronous motor technology, energy saving effect mostly
Fruit is notable, is widely used in the industries such as medicine, environmental protection, chemical industry, oil.The cabinet structure of the wind turbine is divided into mainframe and automatically controlled
Cabinet two large divisions, the host running speed in mainframe is about 15000 revs/min~40000 revs/min, and the noise of wind turbine is with middle height
Based on frequency, if not reinforcing noise reduction control, the work of on-site personnel and the life of neighbouring resident will be caused to perplex, seriously
When can influence the physical and mental health of people.
The machine cabinet door plate of existing wind turbine mostly uses greatly sheet metal and is welded, then its inner surface fill heat-preservation cotton or
The door panel design of single deadener, this structure is too simple, and oise insulation factor is inadequate, it is difficult to inhibit wind turbine to generate middle and high
Frequency noise.
Utility model content：
The utility model is provided a kind of for high-speed centrifugal wind to solve the above-mentioned problems of the prior art
The combined type muffler plate of machine cabinet.
Technical solution used by the utility model has：A kind of combined type for high-speed centrifugal fan cabinet is eliminated the noise
Plate, including cold-reduced sheet, macromolecule damping felt, acoustical cotton, non-woven fabrics and galvanized sheet, between the macromolecule damping felt and cold-reduced sheet
By glue adhesion, after acoustical cotton is by non-woven wraps, paving is pressed on macromolecule damping felt, leads between galvanized sheet and cold-reduced sheet
Cross screw connection.
Further, the galvanized sheet is equipped with several through-holes.
Further, the ratio of the area before puncherless on the sum of area of all through-holes divided by galvanized sheet on the galvanized sheet
Value is more than 23%.
Further, the thickness of the cold-reduced sheet is 1.2~2.5mm.
Further, the thickness of the macromolecule damping felt is 1.0~3.0mm.
Further, the acoustical cotton is that mineral wool, mineral wool, polyurethanes be foamed or polyester fiber cotton, thickness is 30~
80mm。
Further, the non-woven fabrics is polypropylene.
Further, the zinc-plated plate thickness is 1.0mm~2.5mm.
The utility model has the advantages that：
1) galvanized sheet of combined type muffler plate can either allow the air-flow of air to pass through, and can reduce air pertormance and make an uproar
Sound makes simple, dependable performance, meanwhile, the pore structure of acoustical cotton can be more smoothly entered by the air-flow of orifice plate, enhanced
The effect of sound absorption；
2) non-woven fabrics of combined type muffler plate can prevent the fiber of acoustical cotton to be inhaled into wind turbine cabinet, to host and
The parts of power control cabinet are damaged or are failed, to extend the service life of wind turbine；
3) after the macromolecule damping felt of combined type muffler plate is closely pasted with cold-reduced sheet, the vibration of cold-reduced sheet can be inhibited,
The vibration noise generated due to cold rolling panel vibration is reduced, the oise insulation factor of cold-reduced sheet can also be further enhanced；
4) there are many pore structures for the big unit weight acoustical cotton of combined type muffler plate, can fully absorb medium, high frequency noise
Acoustic energy achievees the purpose that reduce noise to be converted into other energy；
5) cold-reduced sheet of combined type muffler plate can separate sound source and recipient, obstruct air-borne sound, further subtract
The propagation of small noise；
6) the utility model can play the effect being complementary to one another to noise reduction, and sound insulation effect is good, simple in structure, be easy to make,
It is especially notable to the medium, high frequency noise effects for inhibiting high-speed centrifugal fan.
Description of the drawings：
Fig. 1 is the utility model partial enlarged view.
Fig. 2 is the utility model structure chart.
Fig. 3 is the utility model graphics.
Fig. 4 is the plane structure chart of galvanized sheet in the utility model.
Specific implementation mode：
The utility model will be further described below with reference to the accompanying drawings.
As shown in Figures 1 to 4, the utility model discloses a kind of combined type noise elimination for high-speed centrifugal fan cabinet
Plate, including cold-reduced sheet 1, macromolecule damping felt 2, acoustical cotton 3, non-woven fabrics 4 and galvanized sheet 5, macromolecule damp felt 2 and cold-reduced sheet 1
Between by glue adhesion, after acoustical cotton 3 is wrapped up by non-woven fabrics 4, paving is pressed on macromolecule damping felt 2, galvanized sheet 5 and cold rolling
It is connected by screw between plate 1.
Cold-reduced sheet 1, is made of cold rolled carbon steel sheet, and thickness is 1.2~2.5mm, it is preferred to use 2.0mm.
Macromolecule damps felt 2, which is made of hot pressing, calendering process, and fire-retardant rank is B grades, and surface density is
2.0~3.5kg/ ㎡, it is preferred to use 3.0kg/ ㎡, thickness are 1.0~3.0mm, preferably 2.0mm.
Foamed, polyester fiber cotton of mineral wool, mineral wool, polyurethanes etc. can be selected in acoustical cotton 3, the material, it is preferred to use ring
Class material polyester fiber cotton is protected, thickness is 30~80mm, and preferably 50mm, unit weight (volume density) is 26~50kg/m3, preferably
40kg/m3。
Non-woven fabrics 4, the preferably environmentally friendly off-white color polypropylene (PP) of material.
Galvanized sheet 5, thickness are 1.0mm~2.5mm, preferably 1.2mm, several through-holes 51 are equipped on galvanized sheet 5, often
The ratio of area before the sum of area of all perforation circles of block galvanized sheet 5 divided by entire plate are puncherless should be 23% or more, i.e.,
(0.25*π*d2* n)/(A1*B1) ＞ 23%, wherein d are the diameter of through-hole 51, and S is adjacent 51 distance of center circle of through-hole of galvanized sheet
From, S=2d, and d=3~8mm, preferably d=5mm, n are the perforation number (as shown in Figure 4) of entire perforated plate, entire combined type
The thickness of muffler plate is δ, δ=30~80mm, preferably 50mm.
The production method of the utility model combined type muffler plate is as follows：
First the side of macromolecule resistance felt 2 is pasted on that side in 1 cavity of cold-reduced sheet with general industry glue, is glued
It is noted that avoiding the bolt hole of cold-reduced sheet surrounding when patch, then acoustical cotton 3 is layered on 2 other side of macromolecule resistance felt, then will
The upper surface of acoustical cotton 3 is wrapped with non-woven fabrics 4, and zinc-plated orifice plate 5 is finally compressed non-woven fabrics 4, screw is used in combination to consolidate zinc-plated orifice plate 5
It is scheduled on the flange of cold-reduced sheet 1.
The machine cabinet door plate made of the utility model combined type muffler plate, can effectively absorb or block making an uproar for wind turbine
Sound, and acoustic energy is switched into thermal energy consumption and is fallen, it reduces noise and is propagated to outside cabinet, to achieve the purpose that noise reduction.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
It for art personnel, can also make several improvements without departing from the principle of this utility model, these improvement also should be regarded as
The scope of protection of the utility model.
Claims (8)
1. a kind of combined type muffler plate for high-speed centrifugal fan cabinet, it is characterised in that：Including cold-reduced sheet (1), high score
Son damping felt (2), acoustical cotton (3), non-woven fabrics (4) and galvanized sheet (5), between the macromolecule damping felt (2) and cold-reduced sheet (1)
By glue adhesion, after acoustical cotton (3) is wrapped up by non-woven fabrics (4), paving is pressed on macromolecule damping felt (2), galvanized sheet (5) with
Cold-reduced sheet is connected by screw between (1).
2. being used for the combined type muffler plate of high-speed centrifugal fan cabinet as described in claim 1, it is characterised in that：The plating
Zine plate (5) is equipped with several through-holes (51).
3. being used for the combined type muffler plate of high-speed centrifugal fan cabinet as claimed in claim 2, it is characterised in that：The plating
On zine plate (5) it is puncherless on the sum of area of all through-holes (51) divided by galvanized sheet (5) before the ratio of area be more than 23%.
4. being used for the combined type muffler plate of high-speed centrifugal fan cabinet as described in claim 1, it is characterised in that：It is described cold
The thickness for rolling plate (1) is 1.2~2.5mm.
5. being used for the combined type muffler plate of high-speed centrifugal fan cabinet as described in claim 1, it is characterised in that：The height
The thickness of air damping felt (2) is 1.0~3.0mm.
6. being used for the combined type muffler plate of high-speed centrifugal fan cabinet as described in claim 1, it is characterised in that：The suction
Sound cotton (3) is mineral wool, mineral wool, polyurethanes is foamed or polyester fiber cotton, thickness are 30~80mm.
7. being used for the combined type muffler plate of high-speed centrifugal fan cabinet as described in claim 1, it is characterised in that：The nothing
Woven fabric (4) is polypropylene.
8. being used for the combined type muffler plate of high-speed centrifugal fan cabinet as described in claim 1, it is characterised in that：The plating
Zine plate (5) thickness is 1.0mm~2.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721869595.XU CN207750291U (en) | 2017-12-28 | 2017-12-28 | A kind of combined type muffler plate for high-speed centrifugal fan cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721869595.XU CN207750291U (en) | 2017-12-28 | 2017-12-28 | A kind of combined type muffler plate for high-speed centrifugal fan cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207750291U true CN207750291U (en) | 2018-08-21 |
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ID=63150905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721869595.XU Active CN207750291U (en) | 2017-12-28 | 2017-12-28 | A kind of combined type muffler plate for high-speed centrifugal fan cabinet |
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| Country | Link |
|---|---|
| CN (1) | CN207750291U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119410A (en) * | 2017-12-28 | 2018-06-05 | 南京磁谷科技有限公司 | A kind of combined type muffler plate for high-speed centrifugal fan cabinet |
-
2017
- 2017-12-28 CN CN201721869595.XU patent/CN207750291U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119410A (en) * | 2017-12-28 | 2018-06-05 | 南京磁谷科技有限公司 | A kind of combined type muffler plate for high-speed centrifugal fan cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 99, Jinxin Middle Road, Jiangning District, Nanjing City, Jiangsu Province Patentee after: Nanjing Cigu Technology Co., Ltd Address before: Nine No. 211102 Bamboo Road, Jiangning Development Zone, Nanjing, Jiangsu, 100 Patentee before: NANJING CIGU LIMITED Corp. |
|
| CP03 | Change of name, title or address |