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CN109404345A - A kind of air inlet noise-reducing structure of magnetic suspension blower - Google Patents

A kind of air inlet noise-reducing structure of magnetic suspension blower Download PDF

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Publication number
CN109404345A
CN109404345A CN201811548504.1A CN201811548504A CN109404345A CN 109404345 A CN109404345 A CN 109404345A CN 201811548504 A CN201811548504 A CN 201811548504A CN 109404345 A CN109404345 A CN 109404345A
Authority
CN
China
Prior art keywords
sound insulation
air inlet
cabinet
insulation board
magnetic levitation
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.)
Pending
Application number
CN201811548504.1A
Other languages
Chinese (zh)
Inventor
熊健
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 CN201811548504.1A priority Critical patent/CN109404345A/en
Publication of CN109404345A publication Critical patent/CN109404345A/en
Priority to PCT/CN2019/105505 priority patent/WO2020125087A1/en
Pending legal-status Critical Current

Links

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
    • 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

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

Abstract

本发明公开了一种磁悬浮风机的进风消音结构，磁悬浮风机置于机柜内，在机柜的四个侧面上均设有进风口，还包括隔音板，若干个隔音板沿着磁悬浮风机中进气道的圆周方向均匀分布，且隔音板的两端固定于机柜内，隔音板位于进风口的内侧。本发明以进气道中心为圆心采用辐射状圆弧隔音板消音，以减少流阻，降低噪音，磁悬浮风机启动时，外部气体经过机柜的进风口进入机柜内部，再经过内部辐射状圆弧隔音板之间的消音腔进入进气道。由于隔音板采用弧形结构，可以降低气流的阻力进而可以降低气体流动的噪音，由于隔音板采用了表面多孔板和内部消音棉的结构，也可以消除主机内部传出的一些高频噪音。

The invention discloses an air intake and noise reduction structure of a magnetic levitation fan. The magnetic levitation fan is placed in a cabinet, and air inlets are arranged on four sides of the cabinet, and also includes sound insulation boards. The circumferential direction of the channels is evenly distributed, and both ends of the sound insulation board are fixed in the cabinet, and the sound insulation board is located inside the air inlet. The invention adopts the radial arc sound insulation board with the center of the air inlet as the center of the circle to reduce the flow resistance and noise. When the magnetic levitation fan starts, the external air enters the inside of the cabinet through the air inlet of the cabinet, and then passes through the inner radial arc for sound insulation. The muffler cavity between the plates enters the air intake. Since the sound insulation board adopts an arc structure, it can reduce the resistance of the airflow and thus the noise of the gas flow. Since the sound insulation board adopts the structure of the surface porous plate and the internal sound-absorbing cotton, it can also eliminate some high-frequency noises from the inside of the host.

Description

A kind of air inlet noise-reducing structure of magnetic suspension blower
Technical field:
The present invention relates to a kind of air inlet noise-reducing structures of magnetic suspension blower.
Background technique:
Existing magnetic suspension centrifugal blower mainly uses sound-insulating covering structure by host air intake duct and air inlet part Noise reduction is separated, existing soundproof plate is vertically or horizontally to design mostly, and flow direction changes greatly when air-flow passes through baffle, and flow resistance is larger, Noise is easy to produce in the place that air flow direction changes greatly.
Summary of the invention:
The present invention is to provide a kind of air inlet noise reduction of magnetic suspension blower to solve the above-mentioned problems of the prior art Structure.
The technical solution adopted in the present invention has: a kind of air inlet noise-reducing structure of magnetic suspension blower, including cabinet and magnetcisuspension Floating blower, the magnetic suspension blower are placed in cabinet, and cabinet is rectangular structure, is equipped with air inlet on four sides of cabinet Mouthful, it further include soundproof plate, several soundproof plates are uniformly distributed along the circumferencial direction of air intake duct in magnetic suspension blower, and adjacent two Silencing cavity is formed between soundproof plate, silencing cavity is connected with air inlet, and the both ends of soundproof plate are fixed in cabinet；
The soundproof plate is convex structure, including Inner arc orifice plate, external arc orifice plate, intermediate silencing cotton and end plate, institute It states Inner arc orifice plate and external arc orifice plate is arranged in parallel, and formed between filling between Inner arc orifice plate and external arc orifice plate Gap, intermediate silencing cotton are filled in the filling gap, and end plate is fixed on the surrounding of inside and outside circular arc orifice plate and will filling gap envelope It closes.
Further, it is fixedly connected with connection sheet on the outer wall of the soundproof plate, fixation hole is equipped in connection sheet.
Further, the air inlet is equipped with strainer.
The invention has the following beneficial effects: the present invention to be disappeared using air inlet passage center as the center of circle using radial circular arc soundproof plate Sound reduces noise to reduce flow resistance, and when magnetic suspension blower starts, extraneous gas enters interior of equipment cabinet by the air inlet of cabinet, Enter air intake duct using the silencing cavity between internal radiation shape circular arc soundproof plate.It, can be with since soundproof plate uses arcuate structure It reduces the resistance of air-flow and then the noise of gas flowing can be reduced, since soundproof plate uses surface porous metal plate and internal noise reduction The structure of cotton can also eliminate some high frequency noises spread out of inside host.
Detailed description of the invention:
Fig. 1 is structure of the invention figure.
Fig. 2 is the structure chart of soundproof plate in the present invention.
Specific embodiment:
The present invention will be further described below with reference to the drawings.
Such as Fig. 1 and Fig. 2, a kind of air inlet noise-reducing structure of magnetic suspension blower of the present invention, including cabinet 1,2 and of magnetic suspension blower Soundproof plate 3.
Magnetic suspension blower 2 is placed in cabinet 1, cabinet 1 be rectangular structure, be equipped on four sides of cabinet 1 into Air port 11, several soundproof plates 3 are uniformly distributed along the circumferencial direction of air intake duct 21 in magnetic suspension blower 2, and adjacent two sound insulation Silencing cavity 30 is formed between plate 3, silencing cavity 30 is connected with air inlet 11.The both ends of soundproof plate 3 are fixed in cabinet 1, sound insulation Plate 3 is located at the inside of air inlet 11.
Soundproof plate 3 is convex structure, including Inner arc orifice plate 31, external arc orifice plate 32, intermediate silencing cotton 33 and end plate, Inner arc orifice plate 31 and external arc orifice plate 32 are arranged in parallel, and are formed and filled out between Inner arc orifice plate 31 and external arc orifice plate 32 Gap is filled, intermediate silencing cotton 33 is filled in the filling gap, and end plate is fixed on the surrounding of inside and outside circular arc orifice plate and will filling Gap closing.
For the fixed installation convenient for soundproof plate 3, connection sheet 34 is fixedly connected on the end plate of bottom surface in soundproof plate 3, Connection sheet 34 is equipped with fixation hole.Soundproof plate 3 is fixed by bolts on cabinet 1 and magnetic suspension blower 2.
Strainer is equipped at air inlet 11.
The present invention uses radial circular arc soundproof plate noise reduction by the center of circle of 21 center of air intake duct, and to reduce flow resistance, reduction is made an uproar Sound, when magnetic suspension blower 2 starts, extraneous gas enters interior of equipment cabinet by the air inlet 11 of cabinet, using internal radiation shape Silencing cavity 30 between circular arc soundproof plate 3 enters air intake duct.Since soundproof plate uses arcuate structure, the resistance of air-flow can be reduced And then the noise of gas flowing can be reduced, it, can also since soundproof plate uses the structure of surface porous metal plate and internal silencing cotton To eliminate some high frequency noises spread out of inside host.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art It for member, can also make several improvements without departing from the principle of the present invention, these improvement also should be regarded as of the invention Protection scope.

Claims (3)

1.一种磁悬浮风机的进风消音结构，包括机柜(1)和磁悬浮风机(2)，所述磁悬浮风机(2)置于机柜(1)内，机柜(1)为矩形状结构，在机柜(1)的四个侧面上均设有进风口(11)，其特征在于：还包括隔音板(3)，若干个隔音板(3)沿着磁悬浮风机(2)中进气道的圆周方向均匀分布，且相邻两隔音板(3)之间形成消音腔(30)，消音腔(30)与进风口(11)相连通，隔音板(3)的两端固定于机柜(1)内；1. An air intake silencing structure for a magnetic levitation fan, comprising a cabinet (1) and a magnetic levitation fan (2). The four sides of (1) are provided with air inlets (11), and it is characterized in that: it also includes a sound insulation board (3), and the plurality of sound insulation boards (3) are along the circumferential direction of the air inlet channel in the magnetic levitation fan (2). Evenly distributed, and a sound-absorbing cavity (30) is formed between two adjacent sound insulation boards (3), the sound-absorbing cavity (30) is communicated with the air inlet (11), and both ends of the sound insulation board (3) are fixed in the cabinet (1) ; 所述隔音板(3)为圆弧状结构，包括内圆弧孔板(31)、外圆弧孔板(32)、中间消音棉(33)和端板，所述内圆弧孔板(31)和外圆弧孔板(32)相互平行设置，且内圆弧孔板(31)与外圆弧孔板(32)之间形成填充间隙，中间消音棉(33)填充于所述填充间隙内，端板固定于内、外圆弧孔板的四周并将填充间隙封闭。The sound insulation board (3) is an arc-shaped structure, comprising an inner arc hole plate (31), an outer arc hole plate (32), an intermediate sound-absorbing cotton (33) and an end plate, and the inner arc hole plate (31) 31) and the outer arc orifice plate (32) are arranged parallel to each other, and a filling gap is formed between the inner arc orifice plate (31) and the outer arc orifice plate (32), and the middle muffler cotton (33) is filled in the filling In the gap, the end plates are fixed around the inner and outer arc orifice plates and seal the filling gap. 2.如权利要求1所述的磁悬浮风机的进风消音结构，其特征在于：所述隔音板(3)的外壁上固定连接有连接片(34)，在连接片(34)上设有固定孔。2. The air inlet noise reduction structure of a magnetic levitation fan according to claim 1, characterized in that: a connecting piece (34) is fixedly connected to the outer wall of the sound insulation board (3), and a fixing piece (34) is provided on the connecting piece (34). hole. 3.如权利要求1所述的磁悬浮风机的进风消音结构，其特征在于：所述进风口(11)处设有滤网。3. The air inlet and noise reduction structure of a magnetic levitation fan according to claim 1, wherein a filter screen is provided at the air inlet (11).
CN201811548504.1A 2018-12-18 2018-12-18 A kind of air inlet noise-reducing structure of magnetic suspension blower Pending CN109404345A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201811548504.1A CN109404345A (en) 2018-12-18 2018-12-18 A kind of air inlet noise-reducing structure of magnetic suspension blower
PCT/CN2019/105505 WO2020125087A1 (en) 2018-12-18 2019-09-12 Inlet air sound attenuation structure for magnetic levitation blower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811548504.1A CN109404345A (en) 2018-12-18 2018-12-18 A kind of air inlet noise-reducing structure of magnetic suspension blower

Publications (1)

Publication Number Publication Date
CN109404345A true CN109404345A (en) 2019-03-01

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WO (1) WO2020125087A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020125046A1 (en) * 2018-12-18 2020-06-25 南京磁谷科技有限公司 Magnetic suspension centrifugal fan cabinet
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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105864109A (en) * 2015-01-22 2016-08-17 中国科学院声学研究所 Silencer for axial flow fan air inlet
CN108005963A (en) * 2017-12-28 2018-05-08 南京磁谷科技有限公司 A kind of cabinet body structure of high-speed centrifugal fan
CN209340231U (en) * 2018-12-18 2019-09-03 南京磁谷科技有限公司 A kind of air inlet noise-reducing structure of magnetic suspension blower

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19514990B4 (en) * 1995-04-24 2005-06-30 Abb Turbo Systems Ag filter silencer
CN202159483U (en) * 2011-07-01 2012-03-07 佛山市顺德区惠美庄材料实业有限公司 Composite silencing plate and products thereof
CN104728158A (en) * 2015-03-30 2015-06-24 华帝股份有限公司 Wind wheel for range hood
CN108252960A (en) * 2017-12-28 2018-07-06 南京磁谷科技有限公司 A kind of noise elimination cabinet of high-speed centrifugal fan
CN109404318A (en) * 2018-12-18 2019-03-01 南京磁谷科技有限公司 A kind of magnetic suspension cfentrifugal blower cabinet
CN109404345A (en) * 2018-12-18 2019-03-01 南京磁谷科技有限公司 A kind of air inlet noise-reducing structure of magnetic suspension blower

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105864109A (en) * 2015-01-22 2016-08-17 中国科学院声学研究所 Silencer for axial flow fan air inlet
CN108005963A (en) * 2017-12-28 2018-05-08 南京磁谷科技有限公司 A kind of cabinet body structure of high-speed centrifugal fan
CN209340231U (en) * 2018-12-18 2019-09-03 南京磁谷科技有限公司 A kind of air inlet noise-reducing structure of magnetic suspension blower

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020125046A1 (en) * 2018-12-18 2020-06-25 南京磁谷科技有限公司 Magnetic suspension centrifugal fan cabinet
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

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Application publication date: 20190301

RJ01 Rejection of invention patent application after publication