CN106050700A - Noiseless fan structure - Google Patents

Noiseless fan structure Download PDF

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Publication number
CN106050700A
CN106050700A CN201610566969.4A CN201610566969A CN106050700A CN 106050700 A CN106050700 A CN 106050700A CN 201610566969 A CN201610566969 A CN 201610566969A CN 106050700 A CN106050700 A CN 106050700A
Authority
CN
China
Prior art keywords
diffuser
air
spiral case
wind wheel
fan structure
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
CN201610566969.4A
Other languages
Chinese (zh)
Inventor
许弼华
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.)
Dongguan Hongming Ventilation Equipment Co Ltd
Original Assignee
Dongguan Hongming Ventilation Equipment 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 Dongguan Hongming Ventilation Equipment Co Ltd filed Critical Dongguan Hongming Ventilation Equipment Co Ltd
Priority to CN201610566969.4A priority Critical patent/CN106050700A/en
Publication of CN106050700A publication Critical patent/CN106050700A/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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • 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
    • F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • 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
    • 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
    • F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
    • 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
    • F04D29/422—Discharge tongues
    • 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
    • F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
    • 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
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • 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
    • F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • F05D2300/12—Light metals
    • F05D2300/121—Aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • F05D2300/16—Other metals not provided for in groups F05D2300/11 - F05D2300/15
    • F05D2300/1616—Zinc
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/50—Intrinsic material properties or characteristics
    • F05D2300/506—Hardness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/611—Coating

Landscapes

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

Abstract

The invention provides a noiseless fan structure which comprises a case, an air inlet, an air outlet, a volute, a wind wheel and a motor, wherein the size of the air outlet is less than or equal to that of the air inlet; the volute comprises an inlet base circle, a volute profile, a diffuser and a volute tongue; the diffuser is expanded along the rotating direction of the volute; the expansion angle a of the diffuser is 6 to 8 degrees; the diameter of the inlet base circle is D, and the radius r of the volute tongue is (0.025-0.05)D; a distance k between the volute tongue and the inlet base circle is (0.04-0.1)D. The air outlet speed is greater than or equal to the air inlet speed, so that an enough amount of incoming air can be supplied to the wind wheel, and noise generated by vacuum is avoided; the expansion angle of the diffuser can reduce the air flow speed of the air outlet and convert part of kinetic energy into a static pressure value; meanwhile, the frequency of air flow entering the inlet of the diffuser from the wind wheel is different from that of air flow entering the air outlet from the diffuser, so that resonance caused by the air flow in the diffuser is avoided, and no noise is generated; when r and k are valued in the range, the fan has lower noise and is higher in efficiency.

Description

A kind of quiet blower fan structure
Technical field
The present invention relates to centrifugal blower noise elimination technique field, specifically refer to a kind of quiet centrifugal blower without quieter material and tie Structure.
Background technology
Existing box-type centrifugal fan is mainly made up of casing, spiral case, wind wheel, air inlet, air outlet and motor, its knot Structure is to arrange impeller in spiral case, and arranges casing outside spiral case, and casing is provided with air inlet and air outlet；If the outer nothing of spiral case If noise reducing apparatus, its noise is relatively big, and owing to casing reduces the limited in one's ability of noise, therefore generally by installing acoustic filter knot The mode of structure or filling deadener is to reduce noise, and this mode makes blower fan structure complex, or relatively costly；Separately On the one hand, due to centrifugal fan structure design unreasonable so that fan efficiency is relatively low.
Summary of the invention
It is an object of the invention to provide a kind of quiet blower fan structure, this blower fan is good and wind without quieter material, muting function Engine efficiency is higher.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of quiet blower fan structure, air inlet and the air outlet including cabinet, being respectively arranged on described cabinet two ends, is located at described machine Spiral case in case, the wind wheel being located in described spiral case and drive the motor of described wind wheel, described air outlet a size of d, described Air inlet a size of d1, d≤d1；Described spiral case includes import basic circle, spiral case inlet pressure, diffuser and snail tongue, and described diffuser is suitable The expansion of described spiral case direction of rotation, angle of flare a=6 ° ~ 8 ° of described diffuser；A diameter of D of described import basic circle, described snail Tongue radius r=(0.025 ~ 0.05) D, described snail tongue and distance k=(0.04 ~ 0.1 of described import basic circle) D.
A kind of optimal way, described snail tongue radius r=0.05D, described snail tongue and distance k=of described import basic circle 0.0625D。
A kind of optimal way, angle of flare a=6 ° of described diffuser.
A kind of optimal way, the blade material hardness of described wind wheel is less than the material hardness of described spiral case.Further, described The blade of wind wheel is aluminium, and described spiral case is galvanized sheet.
A kind of optimal way, described motor is direct-connected or external rotor electric machine.
The invention has the beneficial effects as follows: 1, d≤d1 so that wind speed of giving vent to anger is more than or equal to air inlet wind speed, has enough entering Tolerance is supplied to wind wheel, it is to avoid cause vacuum to produce noise；2, the angle of flare of diffuser can reduce air outlet air velocity, by portion Transfer can be converted into static pressure；Meanwhile, the air-flow frequency of dilator entrance and the frequency of dilator entrance air outlet is entered from wind wheel Rate is different, it is to avoid air-flow forms resonance in dilator, produces noise；3, with reference to the data recorded in following table, import basic circle A diameter of D, snail tongue radius r=(0.025 ~ 0.05) D, distance k=(0.04 ~ 0.1 of snail tongue and import basic circle) D time, making an uproar of blower fan Sound is less and fan efficiency is higher.
Accompanying drawing explanation
The present invention is further detailed explanation with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the blower fan structure schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described:
A kind of quiet blower fan structure, air inlet 11 and the air outlet 12 including cabinet 1, being respectively arranged on described cabinet 1 two ends, is located at Spiral case 2 in described cabinet 1, the wind wheel 3 being located in described spiral case 2 and drive the motor of described wind wheel 3.
Described air outlet 12 a size of d, described air inlet 11 a size of d1, d≤d1.The wind speed that makes to give vent to anger is more than or equal to Air inlet wind speed, has enough air inflows to be supplied to wind wheel 3, it is to avoid cause vacuum to produce noise.
Described spiral case 2 includes import basic circle 21, spiral case inlet pressure 22, diffuser 23 and snail tongue 24, described diffuser 23 along Described spiral case 24 direction of rotation is expanded, angle of flare a=6 ° ~ 8 ° of described diffuser 23, preferably a=6 °.The expansion of diffuser 23 Angle can reduce air outlet 11 air velocity, and part kinetic energy is converted into static pressure；Meanwhile, dilator 23 entrance is entered from wind wheel 3 Air-flow frequency different from the frequency that dilator 23 enters air outlet 12, it is to avoid air-flow forms resonance in dilator 23, produce Noise.
A diameter of D of described import basic circle 21, described snail tongue 24 radius r=(0.025 ~ 0.05) D, described snail tongue 24 and institute State distance k=(0.04 ~ 0.1 of import basic circle 21) D；Optimal way is: described snail tongue 24 radius r=0.05D, described snail tongue 24 with Distance k=0.0625D of described import basic circle 21.With reference to surveyed data in list below, r, k value within the range time, blower fan Noise is less and fan efficiency is higher.
The blade material hardness of described wind wheel 3 is less than the material hardness of described spiral case 2；Further, the blade of described wind wheel 3 For aluminium, described spiral case 3 is galvanized sheet.Owing to both materials are different, the frequency of impact that blade and spiral case 3 are produced by air-flow is each not Identical, resonance effect will not be produced.
Described motor is direct-connected or external rotor electric machine.Reduce the secondary noise that multiple connection member produces.
The technical scope of the present invention is not imposed any restrictions by the above, and all foundation the technology of the present invention essence is to above Any amendment, equivalent variations and the modification that embodiment is made, all still falls within the range of technical scheme.

Claims (6)

1. a quiet blower fan structure, air inlet and the air outlet including cabinet, being respectively arranged on described cabinet two ends, be located at described Spiral case in cabinet, the wind wheel being located in described spiral case and drive the motor of described wind wheel, it is characterised in that: described air-out Mouth a size of d, described air inlet a size of d1, d≤d1；Described spiral case includes import basic circle, spiral case inlet pressure, diffuser and snail Tongue, described diffuser expands along described spiral case direction of rotation, angle of flare a=6 ° ~ 8 ° of described diffuser；Described import basic circle A diameter of D, described snail tongue radius r=(0.025 ~ 0.05) D, distance k=(0.04 of described snail tongue and described import basic circle ~ 0.1) D.
The quiet blower fan structure of one the most according to claim 1, it is characterised in that described snail tongue radius r=0.05D, described Snail tongue and distance k=0.0625D of described import basic circle.
The quiet blower fan structure of one the most according to claim 1 and 2, it is characterised in that angle of flare a=of described diffuser 6°。
The quiet blower fan structure of one the most according to claim 1 and 2, it is characterised in that the blade material of described wind wheel is hard Degree is less than the material hardness of described spiral case.
The quiet blower fan structure of one the most according to claim 4, it is characterised in that the blade of described wind wheel is aluminium, institute Stating spiral case is galvanized sheet.
The quiet blower fan structure of one the most according to claim 1 and 2, it is characterised in that described motor is direct-connected or outer Rotor electric machine.
CN201610566969.4A 2016-07-19 2016-07-19 Noiseless fan structure Pending CN106050700A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610566969.4A CN106050700A (en) 2016-07-19 2016-07-19 Noiseless fan structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610566969.4A CN106050700A (en) 2016-07-19 2016-07-19 Noiseless fan structure

Publications (1)

Publication Number Publication Date
CN106050700A true CN106050700A (en) 2016-10-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106438486A (en) * 2016-11-23 2017-02-22 青岛海尔空调电子有限公司 Centrifugal fan volute and indoor unit
CN106523434A (en) * 2016-11-23 2017-03-22 青岛海尔空调电子有限公司 Centrifugal fan volute and indoor machine
CN108592201A (en) * 2018-05-10 2018-09-28 青岛海尔空调电子有限公司 A kind of Novel spider plant falls machine
CN111059082A (en) * 2019-12-27 2020-04-24 宁波奥克斯电气股份有限公司 Anti-surge fan and air conditioner

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1277317A (en) * 1999-06-14 2000-12-20 瓦特西拉Nsd施韦兹公司 Supercharger set for large diesel engine
CN101117965A (en) * 2006-08-04 2008-02-06 乐金电子(天津)电器有限公司 Volute flow passage structure of cabinet air-conditioner
CN202170893U (en) * 2011-08-09 2012-03-21 何华伟 Low-noise fan
CN104564828A (en) * 2015-01-29 2015-04-29 西安交通大学 Denoising volute for enlarging outlet area of centrifugal fan
CN204851788U (en) * 2015-08-04 2015-12-09 珠海格力电器股份有限公司 Snail tongue, spiral case that has this snail tongue and through -flow fan
CN205876763U (en) * 2016-07-19 2017-01-11 东莞市宏铭通风设备有限公司 Muting draught fan structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1277317A (en) * 1999-06-14 2000-12-20 瓦特西拉Nsd施韦兹公司 Supercharger set for large diesel engine
CN101117965A (en) * 2006-08-04 2008-02-06 乐金电子(天津)电器有限公司 Volute flow passage structure of cabinet air-conditioner
CN202170893U (en) * 2011-08-09 2012-03-21 何华伟 Low-noise fan
CN104564828A (en) * 2015-01-29 2015-04-29 西安交通大学 Denoising volute for enlarging outlet area of centrifugal fan
CN204851788U (en) * 2015-08-04 2015-12-09 珠海格力电器股份有限公司 Snail tongue, spiral case that has this snail tongue and through -flow fan
CN205876763U (en) * 2016-07-19 2017-01-11 东莞市宏铭通风设备有限公司 Muting draught fan structure

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106438486A (en) * 2016-11-23 2017-02-22 青岛海尔空调电子有限公司 Centrifugal fan volute and indoor unit
CN106523434A (en) * 2016-11-23 2017-03-22 青岛海尔空调电子有限公司 Centrifugal fan volute and indoor machine
CN106438486B (en) * 2016-11-23 2020-01-17 青岛海尔空调电子有限公司 Centrifugal fan volute and indoor unit
CN106523434B (en) * 2016-11-23 2020-02-28 青岛海尔空调电子有限公司 Centrifugal fan volute and indoor unit
CN108592201A (en) * 2018-05-10 2018-09-28 青岛海尔空调电子有限公司 A kind of Novel spider plant falls machine
CN111059082A (en) * 2019-12-27 2020-04-24 宁波奥克斯电气股份有限公司 Anti-surge fan and air conditioner

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Application publication date: 20161026