TW375760B - Method and apparatus for minimizing noise from fan filter unit - Google Patents

Method and apparatus for minimizing noise from fan filter unit

Info

Publication number
TW375760B
TW375760B TW086112677A TW86112677A TW375760B TW 375760 B TW375760 B TW 375760B TW 086112677 A TW086112677 A TW 086112677A TW 86112677 A TW86112677 A TW 86112677A TW 375760 B TW375760 B TW 375760B
Authority
TW
Taiwan
Prior art keywords
filter unit
fan filter
present
fan
minimizing noise
Prior art date
Application number
TW086112677A
Other languages
Chinese (zh)
Inventor
Zong Tang Lee
Original Assignee
Kyodo Allied Ind 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 Kyodo Allied Ind Ltd filed Critical Kyodo Allied Ind Ltd
Priority claimed from PCT/SG1997/000040 external-priority patent/WO1999011984A1/en
Application granted granted Critical
Publication of TW375760B publication Critical patent/TW375760B/en

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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/165—Axial entry and discharge
    • 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
    • F04D29/4246—Fan casings comprising more than one outlet
    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow

Abstract

The present invention is a system of geometric guides and baffles for directing and diffusing the external air drawn from a fan blower before distributing the flow evenly to the outlet of a fan filter unit. This arrangement not only reduces the turbulence within a fan filter unit but also maintains the particle count of air drawn through the same system. Furthermore, the present invention is implemented in dimensions substantially similar to that of the fan blower. As such the present invention minimizes noise of a fan filter unit even in confined room facility.
TW086112677A 1997-09-03 1997-09-03 Method and apparatus for minimizing noise from fan filter unit TW375760B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SG1997/000040 WO1999011984A1 (en) 1997-09-03 1997-09-03 A method and apparatus for minimising noise from fan filter unit

Publications (1)

Publication Number Publication Date
TW375760B true TW375760B (en) 1999-12-01

Family

ID=20429567

Family Applications (1)

Application Number Title Priority Date Filing Date
TW086112677A TW375760B (en) 1997-09-03 1997-09-03 Method and apparatus for minimizing noise from fan filter unit

Country Status (7)

Country Link
EP (1) EP1378669A1 (en)
CN (1) CN100436836C (en)
CA (1) CA2302177A1 (en)
DE (1) DE69727322T2 (en)
HK (1) HK1019629A1 (en)
MY (1) MY111326A (en)
TW (1) TW375760B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070253806A1 (en) * 2004-01-30 2007-11-01 Farmer Controls Plc Electric Fan
TWI487558B (en) * 2012-08-03 2015-06-11 Ping Fa Hung Foam-type snow machine improved
WO2015100094A1 (en) * 2013-12-23 2015-07-02 3M Innovative Properties Company Curvilinear sound absorber
CN107795514B (en) * 2017-11-29 2024-03-26 莱克电气股份有限公司 Centrifugal fan with impeller structure
CN108386889B (en) * 2018-05-31 2024-03-08 广东美的厨房电器制造有限公司 Fume exhaust fan
GB201808912D0 (en) 2018-05-31 2018-07-18 Micromass Ltd Bench-top time of flight mass spectrometer
GB201808894D0 (en) 2018-05-31 2018-07-18 Micromass Ltd Mass spectrometer
GB201808949D0 (en) 2018-05-31 2018-07-18 Micromass Ltd Bench-top time of flight mass spectrometer
EP3803950A1 (en) 2018-05-31 2021-04-14 Micromass UK Limited Mass spectrometer
CN113685373B (en) * 2020-05-19 2022-11-01 宁波方太厨具有限公司 Method for selecting air inlet ring of fan system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3065684A (en) * 1958-05-22 1962-11-27 Cortland N O'day Air distributor
US4023472A (en) * 1974-06-04 1977-05-17 Ciba-Geigy Corporation Apparatus for producing a laminar flow
US4560395A (en) * 1984-04-17 1985-12-24 Environmental Air Control, Inc. Compact blower and filter assemblies for use in clean air environments
DE3438710C2 (en) * 1984-10-23 1986-11-27 Wilhelm Gebhardt Gmbh, 7112 Waldenburg Roof fan
US6030186A (en) * 1997-09-03 2000-02-29 Kyodo-Allied Industries Pte, Ltd. Method and apparatus for minimizing noise from fan filter unit

Also Published As

Publication number Publication date
HK1019629A1 (en) 2000-02-18
MY111326A (en) 1999-11-30
CN100436836C (en) 2008-11-26
DE69727322T2 (en) 2004-11-25
CN1447031A (en) 2003-10-08
CA2302177A1 (en) 1999-03-11
DE69727322D1 (en) 2004-02-26
EP1378669A1 (en) 2004-01-07

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees