CN108252960A - A kind of noise elimination cabinet of high-speed centrifugal fan - Google Patents
A kind of noise elimination cabinet of high-speed centrifugal fan Download PDFInfo
- Publication number
- CN108252960A CN108252960A CN201711452974.3A CN201711452974A CN108252960A CN 108252960 A CN108252960 A CN 108252960A CN 201711452974 A CN201711452974 A CN 201711452974A CN 108252960 A CN108252960 A CN 108252960A
- Authority
- CN
- China
- Prior art keywords
- mainframe
- muffler plate
- plate
- cabinet
- big
- Prior art date
- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of noise elimination cabinets of high-speed centrifugal fan, including mainframe, power control cabinet, inlet filter and host, lower leaf is set on the mainframe and power control cabinet, host is fixed in mainframe, on the outer wall of inlet filter mainframe, exhaust outlet is equipped on the outer wall of mainframe, further include small muffler plate and big muffler plate, big muffler plate is fixedly connected in mainframe, and big muffler plate and inlet filter are arranged in parallel, and the first gap is formed between the both ends of big muffler plate and the inner wall of mainframe；Two pieces of small muffler plates are set between big muffler plate and inlet filter, and the second gap is formed between two pieces of small muffler plates.The configuration of the present invention is simple, noise elimination effect are good.
Description
Technical field：
The present invention relates to a kind of noise elimination cabinets of high-speed centrifugal fan.
Background technology：
High-speed centrifugal fan employs that magnetic floats or empty floating axle is held and high-speed permanent magnetic synchronous motor technology mostly so that it is saved
Energy significant effect, is widely used in the industries such as medicine, environmental protection, chemical industry, oil.The cabinet structure of the wind turbine be divided into mainframe and
Power control cabinet two large divisions, the running speed of host is about 15000 revs/min~40000 revs/min in mainframe, the noise of wind turbine with
Based on medium-high frequency, if not carrying out noise reduction control to it, the work of on-site personnel and the life of neighbouring resident will be caused
Puzzlement can influence the physical and mental health of people when serious.
Existing wind turbine cabinet shape is generally distributed in hexahedron, inlet filter and exhaust outlet in mainframe, machine
Cabinet door plate is welded using cold-reduced sheet, and fills single deadener, it is difficult to which the high-frequency noise for absorbing or blocking wind turbine to generate disappears
Sound effective value is undesirable.Host in wind turbine cabinet is the main source of noise source, and host and inlet filter
Directly communicate, be easy to spread out of from inlet filter by the noise that host is sent out and reach human ear, therefore, it is necessary to cabinet and
Gas channel between wind turbine host and inlet filter carries out noise-reducing design.
Invention content：
The present invention is to provide a kind of noise elimination of high-speed centrifugal fan to solve the above-mentioned problems of the prior art
Cabinet.
The technical solution adopted in the present invention has：The noise elimination cabinet of a kind of high-speed centrifugal fan, including mainframe, automatically controlled
Cabinet, inlet filter and host, lower leaf setting, host are fixed in mainframe on the mainframe and power control cabinet, into making a slip of the tongue
Filter is set on the outer wall of mainframe, and exhaust outlet is equipped on the outer wall of mainframe, further includes small muffler plate and big muffler plate, greatly
Muffler plate is fixedly connected in mainframe, and big muffler plate and inlet filter are arranged in parallel, the both ends of big muffler plate with
The first gap is formed between the inner wall of mainframe；Two pieces of small muffler plates are set between big muffler plate and inlet filter, two pieces small
The second gap is formed between muffler plate.
Further, it is equipped with successively equipped with fine filtering on the outer wall of the mainframe and positioned at the outside of inlet filter
Net and coarse filtration net.
Further, the side plate of the mainframe and the side plate of power control cabinet are using combined type acoustical panel, the combined type
Acoustical panel includes cold-reduced sheet, macromolecule damping felt, acoustical cotton, non-woven fabrics and galvanized sheet, the macromolecule damping felt and cold-reduced sheet
Between by glue adhesion, after acoustical cotton is by non-woven wraps, paving is pressed on macromolecule damping felt, galvanized sheet and cold-reduced sheet it
Between be connected by screw.
Further, the galvanized sheet is equipped with several through-holes.
Further, the small muffler plate and big muffler plate are formed by stacking by two pieces of combined type acoustical panels.
The present invention has the advantages that：
1. the both sides of small muffler plate and big muffler plate using combined type noise reduction harden structure, can make the contact of noise incidence
Area doubles, and enhances the sound absorption effect of muffler plate；
2. entering the wind flow velocity by control is less than 10m/s, to determine the small muffler plate between host and inlet filter and big
The installation site of muffler plate can effectively reduce the air power noise caused by air velocity is excessive；
3. during fan operation, air is discharged after being compressed by host from exhaust outlet, from fan inlet filter to wind turbine host
Inlet, the pressure of air continuously decreasing, and flow velocity also becomes to be getting faster, by the way that big muffler plate is disposed adjacent to host
Side, small muffler plate is disposed adjacent to the side of inlet filter, and the air-flow between two small muffler plates passes through width
For L1 more than the air-flow between big muffler plate and machine cabinet door plate by the sum of width L2, i.e. L1 ＞ 2L2, the benefit being arranged so is energy
It is enough more to obstruct the pneumatic noise of big flow velocity in one end far from inlet filter, so as to reduce the noise in cabinet by into
Filter of making a slip of the tongue directly reaches human ear；
4. being made the door-plate of wind turbine cabinet of combined type acoustical panel, the oise insulation factor of cabinet and noise elimination energy can be substantially improved
Power, under equal conditions so that the average noise level of wind turbine falls to 5dB.
Description of the drawings：
Fig. 1 is explosive view of the present invention.
Fig. 2 is overhead sectional view of the present invention.
Fig. 3 and Fig. 4 is Fig. 2 sectional views.
Fig. 5 and Fig. 6 is the structure chart of combined type acoustical panel in the present invention.
Fig. 7 is the structure chart of galvanized sheet in the present invention.
Specific embodiment：
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in Figure 1 to Figure 4, the present invention discloses the noise elimination cabinet of high-speed centrifugal fan a kind of, including mainframe 101, automatically controlled
Lower leaf is set in cabinet 102, inlet filter 63 and host 603, mainframe 101 and power control cabinet 102, and host 603 is fixed on master
In cabinet 101, inlet filter 63 is set on the outer wall of mainframe 101, and exhaust outlet 36 is equipped on the outer wall of mainframe 101,
Small muffler plate 601 and big muffler plate 602 are further included, big muffler plate 602 is fixedly connected in mainframe 101, and big muffler plate 602
It is arranged in parallel with inlet filter 63, it is formed between first between the both ends of big muffler plate 602 and the inner wall of mainframe 101
Gap；Two pieces small muffler plate 601 is set between big muffler plate 602 and inlet filter 63, is formed between two pieces small muffler plate 601
Second gap.
It is equipped on the outer wall of mainframe 101 and positioned at the outside of inlet filter 63 and is equipped with fine filtering net and thick mistake successively
Strainer.
With reference to Fig. 5 to Fig. 7, the side plate of mainframe 101 and the side plate of power control cabinet 102, should using combined type acoustical panel
Combined type acoustical panel includes cold-reduced sheet 1, macromolecule damping felt 2, acoustical cotton 3, non-woven fabrics 4 and galvanized sheet 5, macromolecule damping felt 2
By glue adhesion between cold-reduced sheet 1, after acoustical cotton 3 is wrapped up by non-woven fabrics 4, paving is pressed on macromolecule damping felt 2, zinc-plated
It is connected by screw between plate 5 and cold-reduced sheet 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, surface density 2.0
~3.5kg/m2, it is preferred to use 3.0kg/m2, thickness is 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 be 1.0mm~2.5mm, preferably 1.2mm, on galvanized sheet 5 be equipped with several through-holes 51, every piece
The ratio of area before the sum of area of all perforation circles of galvanized sheet 5 divided by entire plate are puncherless should be more than 23%, 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, perforation numbers (as shown in Figure 4) of the n for entire perforated plate, entire combined type
The thickness of acoustical panel be δ, δ=30~80mm, preferably 50mm.
Small muffler plate 601 and big muffler plate 602 are formed by stacking by two pieces of combined type acoustical panels.
During fan operation, gas passes through coarse filtration net 21 and fine filtering net by inlet filter 63, into cabinet, in master
In machine 603 after rotary compression, discharged from exhaust outlet 36, reach downstream user pipeline, at the same time, noise in cabinet to
Surrounding radiates, and the door-plate of mainframe 101 and the door-plate of power control cabinet 102 are made of combined type acoustical panel.In the master of mainframe 101
Small muffler plate 601 and big muffler plate 602 are arranged between machine 603 and inlet filter 63, can further by 603 sound source of host with
Inlet filter 63 separates, and obstructs air-borne sound, can weaken the environment of the noise on human body sense of hearing and influence.
Coarse filtration net and fine filtering net are connected with the door-plate of mainframe 101 by hexagon socket head cap screw, in inlet filter
It is not closed equipped with coarse filtration net, the upper end on 63, facilitates periodic replacement coarse filtration net.
When installing mainframe 101, power control cabinet 102, small muffler plate 601 and big muffler plate 602, by that of galvanized sheet 5
Side is towards in cabinet, and the side of cold-reduced sheet 1 is towards outside cabinet.
It is conditional in the installation site for installing big muffler plate 602 and small muffler plate 601, specific implementation method is as follows：
Horizontal distance between the side of two small muffler plate 601 and fine filtering net 22 in cabinet is S1, and S1 >=δ, i.e. S1
More than the thickness of individual layer combined type acoustical panel, vertical range between two small muffler plate 601 is L1, big muffler plate 602 with it is small
Horizontal distance between muffler plate 601 is S2, and the vertical range of big muffler plate 602 and mainframe Rear Door and positive door-plate is
The height of L2, small muffler plate 601 and big muffler plate 602 is H, wherein the value size of L1, S2 and L2 and the gas by them
Flow velocity is related, and general control flow velocity is less than or equal to 10m/s, it is assumed that fan inlet maximum air inlet volume flow is Qmax (m3/
S), then there are L1 >=105·Qmax·H-1, L2 >=105·Qmax·H-1And L1 ＞ 2 (L2), S2 >=105·Qmax·H-1；Really
After the installation site for having determined big muffler plate 602 and small muffler plate 601, their appearance and size determines that method is as follows：Large and small noise elimination
The thickness of plate is 2 δ, and the height of large and small muffler plate is H, width=Y1-2 (L2+ δ) of big muffler plate, small muffler plate
Width=0.5 (Y1-L1).
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, several improvement can also be made without departing from the principle of the present invention, these improvement also should be regarded as the present invention's
Protection domain.
Claims (5)
1. a kind of noise elimination cabinet of high-speed centrifugal fan, including mainframe (101), power control cabinet (102), inlet filter (63)
With host (603), lower leaf setting, host (603) are fixed on mainframe on the mainframe (101) and power control cabinet (102)
(101) in, inlet filter (63) is equipped with exhaust outlet on the outer wall of mainframe (101) on the outer wall of mainframe (101)
(36), it is characterised in that：Small muffler plate (601) and big muffler plate (602) are further included, big muffler plate (602) is fixedly connected on master
In cabinet (101), and big muffler plate (602) and inlet filter (63) are arranged in parallel, the both ends of big muffler plate (602) and
The first gap is formed between the inner wall of mainframe (101)；Two pieces small muffler plate (601) is set on big muffler plate (602) and into making a slip of the tongue
Between filter (63), the second gap is formed between two pieces small muffler plate (601).
2. the noise elimination cabinet of high-speed centrifugal fan as described in claim 1, it is characterised in that：The mainframe (101)
It is equipped on outer wall and positioned at the outside of inlet filter (63) and is equipped with fine filtering net and coarse filtration net successively.
3. the noise elimination cabinet of high-speed centrifugal fan stated such as claim 1, it is characterised in that：The side of the mainframe (101)
Using combined type acoustical panel, which includes cold-reduced sheet (1), macromolecule for plate and the side plate of power control cabinet (102)
Felt (2), acoustical cotton (3), non-woven fabrics (4) and galvanized sheet (5) are damped, is led between the macromolecule damping felt (2) and cold-reduced sheet (1)
Cross 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 it is cold
It rolls and is connected by screw between plate (1).
4. the noise elimination cabinet of high-speed centrifugal fan as claimed in claim 3, it is characterised in that：It is set on the galvanized sheet (5)
There are several through-holes (51).
5. the noise elimination cabinet of high-speed centrifugal fan as claimed in claim 3, it is characterised in that：The small muffler plate (601)
It is formed by stacking with big muffler plate (602) by two pieces of combined type acoustical panels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711452974.3A CN108252960A (en) | 2017-12-28 | 2017-12-28 | A kind of noise elimination cabinet of high-speed centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711452974.3A CN108252960A (en) | 2017-12-28 | 2017-12-28 | A kind of noise elimination cabinet of high-speed centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108252960A true CN108252960A (en) | 2018-07-06 |
Family
ID=62724143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711452974.3A Withdrawn CN108252960A (en) | 2017-12-28 | 2017-12-28 | A kind of noise elimination cabinet of high-speed centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108252960A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764005A (en) * | 2019-02-02 | 2019-05-17 | 洛阳毅兴石化电器仪表设备有限公司 | Silencing air filter |
| WO2020125087A1 (en) * | 2018-12-18 | 2020-06-25 | 南京磁谷科技有限公司 | Inlet air sound attenuation structure for magnetic levitation blower |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204139360U (en) * | 2014-10-13 | 2015-02-04 | 上海然贝声学环保工程有限公司 | Plug-in type Felt |
| CN104805920A (en) * | 2015-05-07 | 2015-07-29 | 商丘市金桥环保科技有限公司 | Noise elimination device for generator room |
| CN106762730A (en) * | 2016-12-19 | 2017-05-31 | 南京磁谷科技有限公司 | A kind of magnetic suspension cfentrifugal blower |
| CN208057526U (en) * | 2017-12-28 | 2018-11-06 | 南京磁谷科技有限公司 | A kind of noise elimination cabinet of high-speed centrifugal fan |
-
2017
- 2017-12-28 CN CN201711452974.3A patent/CN108252960A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204139360U (en) * | 2014-10-13 | 2015-02-04 | 上海然贝声学环保工程有限公司 | Plug-in type Felt |
| CN104805920A (en) * | 2015-05-07 | 2015-07-29 | 商丘市金桥环保科技有限公司 | Noise elimination device for generator room |
| CN106762730A (en) * | 2016-12-19 | 2017-05-31 | 南京磁谷科技有限公司 | A kind of magnetic suspension cfentrifugal blower |
| CN208057526U (en) * | 2017-12-28 | 2018-11-06 | 南京磁谷科技有限公司 | A kind of noise elimination cabinet of high-speed centrifugal fan |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020125087A1 (en) * | 2018-12-18 | 2020-06-25 | 南京磁谷科技有限公司 | Inlet air sound attenuation structure for magnetic levitation blower |
| CN109764005A (en) * | 2019-02-02 | 2019-05-17 | 洛阳毅兴石化电器仪表设备有限公司 | Silencing air filter |
| CN109764005B (en) * | 2019-02-02 | 2024-03-12 | 洛阳毅兴石化电器仪表设备有限公司 | Silencing air filter |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180706 |
|
| WW01 | Invention patent application withdrawn after publication |