CN113153825A - A silencing device and fan for fan - Google Patents

A silencing device and fan for fan Download PDF

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Publication number
CN113153825A
CN113153825A CN202110177187.2A CN202110177187A CN113153825A CN 113153825 A CN113153825 A CN 113153825A CN 202110177187 A CN202110177187 A CN 202110177187A CN 113153825 A CN113153825 A CN 113153825A
Authority
CN
China
Prior art keywords
silencing
fan
air inlet
cone
muffling device
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
CN202110177187.2A
Other languages
Chinese (zh)
Inventor
李卫东
高艳
李力
Original Assignee
李卫东
高艳
李力
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 李卫东, 高艳, 李力 filed Critical 李卫东
Priority to CN202110177187.2A priority Critical patent/CN113153825A/en
Publication of CN113153825A publication Critical patent/CN113153825A/en
Pending 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
    • 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
    • F04D29/02Selection of particular materials
    • F04D29/023Selection of particular materials especially adapted for elastic fluid pumps
    • 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
    • F04D29/403Casings; Connections of working fluid especially adapted for elastic fluid pumps
    • 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
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/667Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence

Abstract

The invention discloses a silencer and a fan for the fan, which are used for matching with an air inlet pipeline of the fan, and comprise: the outer wall of the diversion cone is provided with an arc-shaped surface; the arc-shaped surface is concave to the axis of the diversion cone; the silencing assembly is connected with the guide cone; the silencing assembly is positioned on one side of the diversion cone with a smaller cross section area; the flow resistance of the air flow entering the air inlet pipeline is reduced, the noise of the air flow flowing through the air inlet pipeline is reduced, and the effect of the same direction of resistance reduction and noise reduction is realized.

Description

A silencing device and fan for fan
Technical Field
The invention relates to the field of fan equipment, in particular to a silencer for a fan and the fan.
Background
The fan device is often arranged in the open air, and generates larger noise when in operation. The air flow disorder of the air suction opening of the fan can increase the running resistance and power consumption of the fan, and can cause the vibration of the fan and an air duct system to generate noise pollution. In order to eliminate noise pollution, a common method is to arrange a silencer at an air suction inlet of a fan, although a traditional silencer can eliminate partial noise, the added silencer can further increase the operation power consumption of a system, so that the flow resistance is increased, and due to the limited effect of optimizing the air flow distribution, the expected resistance reduction and noise reduction effects cannot be obtained.
The dedicated silencer of fan air intake at present has following two kinds of problems: (1) the structure is not reasonable enough, the blockage is serious, the regeneration noise is large, the flow resistance is large, and the like, so that the system resistance and the energy consumption are increased. Flow performance is often sacrificed and power consumption is increased, resulting in an increase in flow resistance at the air intake. (2) In the design stage of the silencer, the working condition and the noise source frequency characteristic of the site are not known, so that the development is not matched with the working condition and the noise frequency characteristic of the site, and the noise reduction effect is not ideal.
Disclosure of Invention
Objects of the invention
The invention aims to provide a silencer for a fan and the fan, which reduce the flow resistance of airflow entering an air inlet pipeline, reduce the noise of the airflow flowing through the air inlet pipeline and realize the equidirectional effect of resistance reduction and noise reduction.
(II) technical scheme
In order to solve the above problems, the present invention provides a silencer for a fan, which is used in cooperation with an air inlet pipe of the fan, and includes: the outer wall of the diversion cone is provided with an arc-shaped surface; the arc-shaped surface is concave to the axis of the guide cone; the silencing assembly is connected with the guide cone; the silencing assembly is positioned on one side of the flow guide cone with a smaller cross section area.
Optionally, the arc-shaped surface is parallel to the airflow flowing direction of the air inlet; the air inlet is a pipe orifice of the air inlet pipe.
Optionally, the deflector cone and/or the sound attenuating assembly is made of sound attenuating sheet material.
Optionally, the sound damping panel comprises a micro-perforated sheet layer and a sound absorbing sheet layer; the layer of microperforated panels is wrapped around the layer of sound absorbing board.
Optionally, a plurality of perforations are formed on the micro-perforated plate layer; the perforations decrease in diameter sequentially along the axis.
Optionally, the sound absorbing ply is made of fiberglass wool or foam.
Optionally, the noise reduction assembly comprises a cylinder and a plurality of partition plates; the plurality of partition plates are arranged in the cylinder along the circumferential direction of the guide cone.
Optionally, the sound attenuation assembly further comprises a sound attenuation column; the silencing column is connected with the cylinder through the partition plate; the sound attenuation column is arranged in the cylinder body.
Optionally, the sound-deadening column is connected with the guide cone.
On the other hand, the invention also provides a fan which comprises the silencing device.
(III) advantageous effects
The technical scheme of the invention has the following beneficial technical effects:
according to the invention, the arc-shaped surface is formed on the outer wall of the flow cone and is concave towards the axis of the flow cone, so that the flow resistance of airflow entering the air inlet pipeline is reduced; the silencing component is arranged on one side with smaller cross-sectional area of the flow guide cone, so that the noise of air flow entering the air inlet pipeline is reduced, and the effect of the same direction of resistance reduction and noise reduction is realized.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the muffler assembly of the present invention;
FIG. 3 is a schematic diagram of the structure of the microperforated panel layer of the present invention.
Reference numerals:
the flow guide cone comprises a flow guide cone 1, an arc-shaped surface 101, a silencing component 2, a cylinder 201, a partition plate 202, a through hole 3 and a silencing column 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
In the description of the present invention, it should be noted that the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 3, in an embodiment of the present invention, in one aspect, the present invention provides a sound-deadening device for use with an air inlet duct of a fan, including a flow guiding cone 1 and a sound-deadening assembly 2, an arc-shaped surface 101 is formed on an outer wall of the flow guiding cone 1; the arc-shaped surface 101 is concave to the axis of the guide cone 1; the silencing component 2 is connected with the flow guide cone 1; the silencing component 2 is positioned on the side of the diversion cone 1 with smaller cross section area. In the present embodiment, the axis of the guide cone 1 is a line segment AB in fig. 1.
According to the invention, the arc-shaped surface 101 is formed on the outer wall of the guide cone 1, and the arc-shaped surface 101 is concave to the axis of the guide cone 1, so that the flow resistance of airflow entering an air inlet pipeline is reduced; the silencing component 2 is arranged on one side of the diversion cone 1 with a smaller cross section area, so that the noise of air flow entering the air inlet pipeline is reduced, and the same-direction effect of resistance reduction and noise reduction is realized.
In the embodiment of the present invention, the arc-shaped surface 101 is parallel to the airflow flowing direction of the air inlet, so that the flow resistance of the airflow entering the air inlet duct is minimized, that is, the airflow of the air inlet is guided into the air inlet duct of the fan along the flowing direction with the minimum flow resistance. In this embodiment, the air inlet is a pipe orifice of the air inlet pipe.
In the embodiment of the present invention, the guide cone 1 and the silencing assembly 2 are both made of silencing plate, and in other embodiments, the guide cone 1 or the silencing assembly 2 is made of silencing plate.
In an embodiment of the invention, the sound damping sheet comprises a micro-perforated sheet layer and a sound absorption sheet layer; the micro-perforated plate layer is wrapped on the sound absorption plate layer, so that the medium-high frequency sound absorption effect is realized. In order to broaden the sound absorption performance of medium and low frequency, a plurality of perforations 3 are formed on the micro-perforated plate layer, and the perforation rate is reduced along the axis in sequence. In one embodiment, the perforation rate is controlled by the diameter and number of perforations. In this embodiment, the sound-absorbing sheet layer is made of other sound-absorbing materials such as glass fiber wool or foam.
In the embodiment of the present invention, the noise reduction assembly 2 includes a cylinder 201 and a plurality of partition plates 202; wherein the cartridge 201 is fitted into the intake duct; wherein a plurality of partition plates 202 are arranged in the cylinder 201 along the circumferential direction of the guide cone 1. In this embodiment, the partition plate 202 divides the cylinder 201 into a plurality of channels, i.e. the partition plate 202 divides the air inlet duct into a plurality of sub-air ducts, so as to increase the sound absorption area and improve the sound absorption effect.
In an embodiment of the invention, the silencing assembly 2 further comprises a silencing post 4; the silencing column 4 is connected with the cylinder 201 through the partition plate 202; the sound-deadening cylinder 4 is disposed in the cylinder 201. The silencing column 4 is connected with the guide cone 1. In this embodiment, the diversion cone 1 and the silencing component 2 are integrally formed, and the diversion cone 1 is arranged on the outer side of the air inlet pipeline.
On the other hand, the invention also provides a fan which comprises the silencing device.
The invention can realize the same-direction cooperative adjustment of resistance reduction and noise reduction, and has the principle of reducing aerodynamic noise generated by airflow flow by means of the optimization of a flow field and the sound absorption principle of a micro-perforated plate, and has good sound absorption performance, aerodynamic performance and structural stability.
The diversion cone 1 is arranged on the outer side of the air inlet pipeline, so that the air inlet pipeline fully utilizes the open space; the invention optimizes the flow and noise elimination channels, namely, a plurality of partition plates 202 are distributed in the cylinder body 201 along the circumferential direction of the guide cone 1. The invention designs a reasonable flow guide component, wherein the flow guide component is a flow guide cone 1, and the flow resistance is reduced.
The invention adopts a micro-perforated plate structure, widens the middle-low frequency sound absorption frequency band by changing the perforation rate in sections, and improves the sound energy dissipation on the unit projection area;
the sound absorption material is used for attenuating medium-high frequency noise and is fixed on the back cavity of the micro perforated plate structure as the sound lining, namely the micro perforated plate layer is wrapped on the sound absorption plate layer, so that the 'squeaking' of high-speed airflow during perforation is effectively avoided.
The guide cone 1 and the silencing component 2 are integrally designed, so that the invention has the advantages of compact structure, moisture resistance, corrosion resistance and easy processing and installation.
The invention realizes resistance reduction and noise reduction in the same direction. According to the air flow performance, a guide cone 1 is arranged, and air flow is guided to pass through an air inlet with the minimum flow resistance; make full use of air current passageway space optimizes the microperforated plate structure, forms impedance combined type silencer, has both improved the sound absorption effect, eliminates/reduces secondary flow, efflux and wake flow that produce because the flow is inhomogeneous again, realizes flowing and makes an uproar integrative, whole shaping.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention shall be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims (10)

1. The utility model provides a silencing device for fan for use with the intake stack cooperation of fan, its characterized in that includes:
the outer wall of the guide cone (1) is provided with an arc-shaped surface (101);
the arc-shaped surface (101) is concave to the axis of the guide cone (1);
the silencing assembly (2) is connected with the guide cone (1);
the silencing component (2) is positioned on one side of the diversion cone (1) with a smaller cross section area.
2. The muffling device of claim 1,
the arc-shaped surface (101) is parallel to the airflow flowing direction of the air inlet;
the air inlet is a pipe orifice of the air inlet pipe.
3. The muffling device of claim 1,
the diversion cone (1) and/or the silencing component (2) are/is made of silencing plates.
4. The muffling device of claim 3,
the sound attenuation plate comprises a micro perforated plate layer and a sound absorption plate layer;
the micro-perforated plate layer is wrapped on the sound absorption plate layer.
5. The muffling device of claim 4,
a plurality of perforations (3) are formed on the micro-perforated plate layer;
the perforation rates of the microperforated plies decrease sequentially along the axis.
6. The muffling device of claim 4,
the sound absorbing panel layer is made of glass fiber wool or foam.
7. The muffling device of claim 1,
the noise reduction assembly (2) comprises a cylinder body (201) and a plurality of partition plates (202);
the plurality of partition plates (202) are arranged in the cylinder (201) along the circumferential direction of the guide cone (1).
8. The muffling device of claim 7,
the silencing component (2) further comprises a silencing column (4);
the silencing column (4) is connected with the cylinder (201) through the partition plate (202);
the sound attenuation column (4) is arranged in the cylinder body (201).
9. The muffling device of claim 8,
the silencing column (4) is connected with the diversion cone (1).
10. A fan, characterized by comprising a silencing device according to any one of claims 1 to 9.
CN202110177187.2A 2021-02-07 2021-02-07 A silencing device and fan for fan Pending CN113153825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110177187.2A CN113153825A (en) 2021-02-07 2021-02-07 A silencing device and fan for fan

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110177187.2A CN113153825A (en) 2021-02-07 2021-02-07 A silencing device and fan for fan
PCT/CN2021/112951 WO2022166156A1 (en) 2021-02-07 2021-08-17 Silencing device for fan, and fan

Publications (1)

Publication Number Publication Date
CN113153825A true CN113153825A (en) 2021-07-23

Family

ID=76883068

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110177187.2A Pending CN113153825A (en) 2021-02-07 2021-02-07 A silencing device and fan for fan

Country Status (2)

Country Link
CN (1) CN113153825A (en)
WO (1) WO2022166156A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022166156A1 (en) * 2021-02-07 2022-08-11 李卫东 Silencing device for fan, and fan

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CN2073042U (en) * 1990-03-07 1991-03-13 魏建中 Low noise centrifugal fan
CN2171677Y (en) * 1993-06-11 1994-07-13 成都科泰临床工程发展中心 Miniature exhaust silencer
CN2210270Y (en) * 1994-09-27 1995-10-18 西安交通大学 Guiding flow and sound-adsorption device for centrifugal fan
CN102261138A (en) * 2010-05-28 2011-11-30 广东环力复合材料股份有限公司 Micro-perforated sound-absorbing aluminum hollow compound plate
CN203500114U (en) * 2013-08-09 2014-03-26 华能国际电力股份有限公司 Flow guide assembly for fan exhaust opening
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CN209229985U (en) * 2018-11-23 2019-08-09 上海泛德声学工程有限公司 A kind of air-conditioning noise elimination air channel structure of anechoic room
CN110966263A (en) * 2019-11-26 2020-04-07 重庆美的通用制冷设备有限公司 Noise eliminator, noise eliminator assembly, axial flow fan and air conditioner
CN111156205A (en) * 2020-03-24 2020-05-15 河南绿望环保节能工程有限公司 Air current noise elimination guiding device for aerodynamic equipment
CN212057774U (en) * 2020-02-27 2020-12-01 北京汇通汇利技术开发有限公司 Low-noise type gas wall-mounted furnace

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2073042U (en) * 1990-03-07 1991-03-13 魏建中 Low noise centrifugal fan
CN2171677Y (en) * 1993-06-11 1994-07-13 成都科泰临床工程发展中心 Miniature exhaust silencer
CN2210270Y (en) * 1994-09-27 1995-10-18 西安交通大学 Guiding flow and sound-adsorption device for centrifugal fan
CN102261138A (en) * 2010-05-28 2011-11-30 广东环力复合材料股份有限公司 Micro-perforated sound-absorbing aluminum hollow compound plate
CN203500114U (en) * 2013-08-09 2014-03-26 华能国际电力股份有限公司 Flow guide assembly for fan exhaust opening
JP2016166590A (en) * 2015-03-10 2016-09-15 三菱重工業株式会社 Silencer cover, exhaust turbine supercharger, internal combustion engine and vessel
CN108867904A (en) * 2018-07-06 2018-11-23 长春理工大学 There is the slim multilayer acoustic board of high acoustic absorption coefficient in low frequency band
CN108954759A (en) * 2018-08-23 2018-12-07 珠海格力电器股份有限公司 Tuyere device and air-conditioner set
CN209229985U (en) * 2018-11-23 2019-08-09 上海泛德声学工程有限公司 A kind of air-conditioning noise elimination air channel structure of anechoic room
CN110966263A (en) * 2019-11-26 2020-04-07 重庆美的通用制冷设备有限公司 Noise eliminator, noise eliminator assembly, axial flow fan and air conditioner
CN212057774U (en) * 2020-02-27 2020-12-01 北京汇通汇利技术开发有限公司 Low-noise type gas wall-mounted furnace
CN111156205A (en) * 2020-03-24 2020-05-15 河南绿望环保节能工程有限公司 Air current noise elimination guiding device for aerodynamic equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022166156A1 (en) * 2021-02-07 2022-08-11 李卫东 Silencing device for fan, and fan

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