CN108252959A - A kind of cabinet structure of the high-speed centrifugal fan with built-in silencer - Google Patents

A kind of cabinet structure of the high-speed centrifugal fan with built-in silencer Download PDF

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Publication number
CN108252959A
CN108252959A CN201711452956.5A CN201711452956A CN108252959A CN 108252959 A CN108252959 A CN 108252959A CN 201711452956 A CN201711452956 A CN 201711452956A CN 108252959 A CN108252959 A CN 108252959A
Authority
CN
China
Prior art keywords
built
silencer
mainframe
babinet
plate
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.)
Withdrawn
Application number
CN201711452956.5A
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Chinese (zh)
Inventor
余知义
吴立华
董继勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Cigu Technology Co Ltd
Original Assignee
Nanjing Cigu Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing Cigu Technology Co Ltd filed Critical Nanjing Cigu Technology Co Ltd
Priority to CN201711452956.5A priority Critical patent/CN108252959A/en
Publication of CN108252959A publication Critical patent/CN108252959A/en
Withdrawn legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663Sound attenuation
    • F04D29/664Sound attenuation by means of sound absorbing material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/42Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226Fan casings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663Sound attenuation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/70Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Exhaust Silencers (AREA)

Abstract

The invention discloses a kind of cabinet structures of the high-speed centrifugal fan with built-in silencer, lower leaf is set on mainframe and power control cabinet, host is fixed in mainframe, inlet filter is set on the outer wall of mainframe, exhaust outlet is equipped on the outer wall of mainframe, built-in silencer is further included, the built-in silencer is fixed in mainframe;Built-in silencer includes small muffler plate, big muffler plate and babinet, two pieces of small muffler plates are symmetrically fixed on the inner wall of babinet, and the first gap is formed between two small muffler plates, and big muffler plate is fixed in babinet, and big muffler plate is located at the inside in the first gap, and parallel with the first gap;The babinet is rectangular configuration, and the port wall on babinet and positioned at small muffler plate side extends outwardly and forms the extension edge of platform-like.Noise elimination effect of the present invention is good, rational in infrastructure.

Description

A kind of cabinet structure of the high-speed centrifugal fan with built-in silencer
Technical field:
The present invention relates to a kind of cabinet structures of the high-speed centrifugal fan with built-in silencer.
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.To increase noise elimination effect, acoustical panel is often added in cabinet, due to by structure design and technological level It limits, plate inconvenience filling deadener in cabinet top plate and cabinet so that fan noise readily penetrates through cabinet top plate and cabinet Middle plate, so as to reduce the sound absorption effect of cabinet entirety.
Invention content:
The present invention is to provide a kind of high speed with built-in silencer to solve the above-mentioned problems of the prior art The cabinet structure of centrifugal fan.
The technical solution adopted in the present invention has:A kind of cabinet knot of the high-speed centrifugal fan with built-in silencer Structure, including mainframe, power control cabinet, inlet filter and host, lower leaf setting, host are fixed on the mainframe and power control cabinet In in mainframe, inlet filter is set on the outer wall of mainframe, and exhaust outlet is equipped on the outer wall of mainframe, is further included built-in Silencer, the built-in silencer are fixed in mainframe;The built-in silencer includes small muffler plate, big muffler plate and case Body, two pieces of small muffler plates are symmetrically fixed on the inner wall of babinet, and the first gap is formed between two small muffler plates, and big muffler plate is consolidated Due in babinet, and big muffler plate is located at the inside in the first gap, and parallel with the first gap;The babinet is rectangle knot Structure, the port wall on babinet and positioned at small muffler plate side extend outwardly and form the extension edge of platform-like.
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 side plate of the babinet, the side plate of mainframe and power control cabinet uses combined type noise reduction Plate, the combined type acoustical panel include cold-reduced sheet, macromolecule damping felt, acoustical cotton, non-woven fabrics and galvanized sheet, the macromolecule damping By glue adhesion between felt and cold-reduced sheet, after acoustical cotton is by non-woven wraps, paving is pressed on macromolecule damping felt, galvanized sheet It is connected by screw between cold-reduced sheet.
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:
The large and small muffler plate of outer-layer box body and board-type of silencer built in 1. employs combined type noise elimination harden structure, directly The large and small muffler plate of template is located in the babinet, when noise is by built-in silencer, can be effectively reduced noise and penetrate mainframe Plate in top plate and cabinet, so as to enhance the sound insulation effect of cabinet;
2. noise is by built-in silencer babinet, contact area bigger improves sound absorption effect;
3. " L " type (extension edge 6040) structure of silencer babinet built in is located on the inside of the rack column of cabinet inlet side, Noise can effectively be prevented to generate leakage sound directly through rack column, further reduced the overall noise of cabinet;
4. the large and small muffler plate of board-type is mounted on built-in silencer babinet, when assembling, first assembles built-in silencer, It is connected again with cabinet, built-in silencer, can be with the wind turbine machine of same type after mass production as an independent muffler part Cabinet carries out random combine.
Description of the drawings:
Fig. 1 to Fig. 4 is structure chart of the present invention.
Fig. 5 to Fig. 8 is the structure chart of built-in silencer in the present invention.
Fig. 9 and Figure 10 is the structure chart of combined type acoustical panel in the present invention.
Figure 11 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 Figures 1 to 4, the present invention discloses a kind of cabinet knot of the high-speed centrifugal fan with built-in silencer Structure, including mainframe 101, power control cabinet 102, inlet filter 63 and host 603, lower leaf on mainframe 101 and power control cabinet 102 Setting, host 603 are fixed in mainframe 101, and inlet filter 63 is set on the outer wall of mainframe 101, in mainframe 101 Outer wall is equipped with exhaust outlet 36, further includes built-in silencer 605, and the built-in silencer 605 is fixed in mainframe 101.
Such as Fig. 5 to Fig. 8, built-in silencer 605 includes small muffler plate 601, big muffler plate 602 and babinet 604, two pieces small to disappear Sound plate 601 is symmetrically fixed on the inner wall of babinet 604, and the first gap, big muffler plate 602 are formed between two small muffler plates 601 It is fixed in babinet 604, and big muffler plate 602 is located at the inside in the first gap, and parallel with the first gap.Babinet 604 is Rectangular configuration, the port wall on babinet 604 and positioned at small 601 side of muffler plate extend outwardly and form the extension edge of platform-like 6040。
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. 9 to Figure 11, the side plate of the side plate of babinet 604, the side plate of mainframe 101 and power control cabinet 102 uses Combined type acoustical panel, the combined type acoustical panel include cold-reduced sheet 1, macromolecule damping felt 2, acoustical cotton 3, non-woven fabrics 4 and galvanized sheet 5, by glue adhesion between macromolecule damping felt 2 and cold-reduced sheet 1, after acoustical cotton 3 is wrapped up by non-woven fabrics 4, paving is pressed in high score On son damping felt 2, it is connected by screw between galvanized sheet 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 and fine filtering net by inlet filter 63, into built-in silencer 605, it sucked, compress by host 603, then discharged from exhaust outlet 36, downstream user pipeline is reached, at this point, host 603 is main Noise source, noise, across built-in silencer 605, spread out of from inlet filter 63 to ambient radiation and reach human ear, board-type is small to disappear Sound plate 601 and the big muffler plate 602 of board-type are mounted in babinet 604, and built-in 605 structure of silencer has sound absorption effect, can The noise at fan inlet is greatly reduced;
The thickness of the big muffler plate of board-type and the small muffler plate of board-type is the thickness of 2 times of machine cabinet door plate, i.e. 2 δ, and case Thickness of the thickness of body 604 for 1 times of 100 door-plate of cabinet, i.e. δ;
The large and small muffler plate of board-type is as follows in the installation site method for determining dimension of box inside:
The small muffler plate 601 of two board-types and the distance of built-in silencer air inlet are S1, and S1 >=δ, wherein δ are cabinets The thickness of door-plate.The distance between two small muffler plates of board-type are L1, the big muffler plate 602 of board-type and the small muffler plate of board-type The distance between 601 be S2, and the distances of the big muffler plate 602 of board-type and 604 both sides of babinet is L2, the small muffler plate of board-type 601 and the big muffler plate 602 of board-type height for H, H=H1-2 δ, wherein H1 be in cabinet between plate and cabinet top plate away from From.And the value size of L1, S2 and L2 are related with by their air inlet flow velocity, it is assumed that fan inlet maximum enters the wind volume flow For Qmax (m3/ s), then there are L1 >=105·Qmax·H-1, L2 >=105·Qmax·H-1And L1 > 2 (L2), S2 >=105· Qmax·H-1
After the installation site that the large and small muffler plate of board-type is determined, the appearance and size of built-in silencer also determines that, tool Body method is as follows:
The horizontal distance of two parallel flange of the width dimensions X2 of built-in silencer 605 and rack column is equal, built-in to disappear The length dimension Y2=S1+S2+6.5 δ of sound device, the height H1 of built-in silencer by between plate in cabinet and cabinet top plate away from From decision.
After the appearance and size that built-in silencer 605 is determined, the width dimensions of large and small muffler plate are just by babinet 605 Chamber size determines that specific method is as follows:The thickness of the large and small muffler plate of board-type is 2 δ, the height of the large and small muffler plate of board-type It is H, width=Yj-2 (L2+ δ) of the big muffler plate of board-type, width=0.5 (Yj-L1-2 δ) of small muffler plate.
Before the host 603 of wind turbine and each door-plate are not installed, first the built-in silencer being completed is passed through with cabinet Hexagon socket head cap screw is connected, and then installs inlet filter 63 again, finally installs host 603 and other machine cabinet door plates.
Built-in silencer 605 is that tool is directive, when mounted, should by built-in 605 air inlet side of silencer with into making a slip of the tongue Filter 63 and rack column flange are connected, and built-in silencer 605 goes out gas side towards host 603.
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 cabinet structure of the high-speed centrifugal fan with built-in silencer, including mainframe (101), power control cabinet (102), inlet filter (63) and host (603), lower leaf setting, host on the mainframe (101) and power control cabinet (102) (603) it is fixed in mainframe (101), inlet filter (63) is on the outer wall of mainframe (101), in mainframe (101) Outer wall be equipped with exhaust outlet (36), it is characterised in that:Built-in silencer (605) is further included, the built-in silencer (605) is solid Due in mainframe (101);The built-in silencer (605) includes small muffler plate (601), big muffler plate (602) and babinet (604), two pieces small muffler plate (601) is symmetrically fixed on the inner wall of babinet (604), and is formed between two small muffler plates (601) First gap, big muffler plate (602) are fixed in babinet (604), and big muffler plate (602) is positioned at the inside in the first gap, and It is parallel with the first gap;The babinet (604) is rectangular configuration, on babinet (604) and positioned at small muffler plate (601) side Port wall extends outwardly and forms the extension edge (6040) of platform-like.
2. the cabinet structure of the high-speed centrifugal fan with built-in silencer as described in claim 1, it is characterised in that:Institute It states on the outer wall of mainframe (101) and is equipped with positioned at the outside of inlet filter (63) and be equipped with fine filtering net and coarse filtration successively Net.
3. the cabinet structure of the high-speed centrifugal fan with built-in silencer stated such as claim 1, it is characterised in that:It is described For the side plate of the side plate of babinet (604), the side plate of mainframe (101) and power control cabinet (102) using combined type acoustical panel, this is multiple Box-like acoustical panel includes cold-reduced sheet (1), macromolecule damping felt (2), acoustical cotton (3), non-woven fabrics (4) and galvanized sheet (5), the height By glue adhesion between air damping felt (2) and cold-reduced sheet (1), after acoustical cotton (3) is wrapped up by non-woven fabrics (4), paving is pressed in On macromolecule damping felt (2), it is connected by screw between galvanized sheet (5) and cold-reduced sheet (1).
4. the cabinet structure of the high-speed centrifugal fan with built-in silencer as claimed in claim 3, it is characterised in that:Institute Galvanized sheet (5) is stated equipped with several through-holes (51).
5. the cabinet structure of the high-speed centrifugal fan with built-in silencer as claimed in claim 3, it is characterised in that:Institute Small muffler plate (601) and big muffler plate (602) is stated to be formed by stacking by two pieces of combined type acoustical panels.
CN201711452956.5A 2017-12-28 2017-12-28 A kind of cabinet structure of the high-speed centrifugal fan with built-in silencer Withdrawn CN108252959A (en)

Priority Applications (1)

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CN201711452956.5A CN108252959A (en) 2017-12-28 2017-12-28 A kind of cabinet structure of the high-speed centrifugal fan with built-in silencer

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Application Number Priority Date Filing Date Title
CN201711452956.5A CN108252959A (en) 2017-12-28 2017-12-28 A kind of cabinet structure of the high-speed centrifugal fan with built-in silencer

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020043022A1 (en) * 2018-08-30 2020-03-05 南京磁谷科技有限公司 Low-noise cabinet with modular box-type assembled structure

Citations (4)

* Cited by examiner, † Cited by third party
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
CN207864263U (en) * 2017-12-28 2018-09-14 南京磁谷科技有限公司 A kind of cabinet structure of the high-speed centrifugal fan with built-in silencer

Patent Citations (4)

* Cited by examiner, † Cited by third party
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
CN207864263U (en) * 2017-12-28 2018-09-14 南京磁谷科技有限公司 A kind of cabinet structure of the high-speed centrifugal fan with built-in silencer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020043022A1 (en) * 2018-08-30 2020-03-05 南京磁谷科技有限公司 Low-noise cabinet with modular box-type assembled structure

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Application publication date: 20180706

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