GB2468778A - An enclosure for a fan - Google Patents

An enclosure for a fan Download PDF

Info

Publication number
GB2468778A
GB2468778A GB1004516A GB201004516A GB2468778A GB 2468778 A GB2468778 A GB 2468778A GB 1004516 A GB1004516 A GB 1004516A GB 201004516 A GB201004516 A GB 201004516A GB 2468778 A GB2468778 A GB 2468778A
Authority
GB
United Kingdom
Prior art keywords
enclosure
fan
housing
inner housing
walls
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Withdrawn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
GB1004516A
Other versions
GB201004516D0 (en
Inventor
Colin Biggs
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.)
Nuaire Ltd
Original Assignee
Nuaire 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
Priority claimed from GB0509694A external-priority patent/GB2426286B/en
Application filed by Nuaire Ltd filed Critical Nuaire Ltd
Priority to GB1004516A priority Critical patent/GB2468778A/en
Publication of GB201004516D0 publication Critical patent/GB201004516D0/en
Publication of GB2468778A publication Critical patent/GB2468778A/en
Withdrawn legal-status Critical Current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
    • F04D29/40—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
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/601—Mounting; Assembling; Disassembling specially 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626—Mounting or removal of fans
    • 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
    • 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
    • F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136—Forced ventilation, e.g. by fans
    • H05K7/20172—Fan mounting or fan specifications
    • 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
    • F24F13/20—Casings or covers
    • F24F2013/205—Mounting a ventilator fan therein

Abstract

An enclosure 20 for a fan 10, the enclosure comprising an inner housing 22 for enclosing the fan and an outer housing 24, where a number of anti-vibration mounting blocks 28 are disposed between the walls of the inner and outer housing, connecting them. Preferably the inner and/or outer housing has a square or rectangular cross section and the inner housing is formed of metal. The anti-vibration mounting blocks may be formed of elastomeric material and interconnect the walls of the inner and outer housings at spaced apart intervals.

Description

Fan enclosure The present invention relates to an enclosure for a fan in a ventilation or air handling system.
Various acoustic arrangements have been used hitherto to reduce the emission or!breakoutu of noise from the fan casing of a fan mounted in a ventilation or air handling system. Some of these arrangements comprise an enclosure consisting of a single skin of metal to which an acoustically absorbent layer is applied: other arrangements comprise an enclosure made up of a number of sealed panels which enclose acoustic barrier material.
We have now devised an enclosure which provides an improved acoustic performance.
In accordance with the present invention, there is provided an enclosure for a fan, the enclosure comprising an inner housing for enclosing the fan, and an outer housing, with acoustically absorbent material disposed between the walls of the inner and outer housings.
Preferably the inner housing and/or the outer housing is formed of metal and may be in the form of a metal box, typically of square or rectangular cross-section.
Preferably the inner housing is connected to the outer housing by a number of mounting members of elastomeric material, serving as anti-vibration mounts. The enclosure may then be devoid of any rigid mechanical interconnection between the two housings, so providing complete structural isolation between the two housings.
An embodiment of the present invention will now be described by way of example only and with reference to the accompanying drawings. the single figure of which is a schematic cross-section through an embodiment of fan enclosure in accordance with the present invention.
Referring to the drawings, there is shown the fan of a ventilating or air handling system, the fan casing 10 having an inlet (not shown) and a projecting outlet port 12. The fan is disposed within an enclosure 20, with the outlet port 12 of the fan extending through an aperture in a wall of the enclosure 20: the enclosure is also formed, in another wall, with an aperture for an inlet duct 14; flexible joints or seals 11 are formed around the outlet port 12 and the inlet duct 14, to close the gaps between these and the peripheries of the apertures in the enclosure walls.
The enclosure 20 comprises an inner housing 22 and an outer housing 24, with acoustically absorbent material 26 disposed between the walls of the two housings. In the example shown, the inner and outer housings 22, 24 comprise metal boxes of square or rectangular cross-section. Further, the inner housing 22 is supported by the outer housing by means of a number of anti-vibration mounting blocks 28 which interconnect the walls of the two housings at spaced-apart intervals: the enclosure is devoid of any rigid mechanical interconnection between the two housings, thus providing complete structural isolation. The fan itself is mounted to the inner housing.
It will be noted that the inner housing or box 22 forms an integral structure disposed within the outer housing, which also forms an integral structure.
One wall of each housing is however formed with an opening (not shown) to allow the fan to be to be fitted into the enclosure, and a closure is provided for this opening, the closure comprising two walls or skins separated by acoustically absorbent material.
It will be appreciated that the enclosure which has been described is of simple construction yet provides an effective acoustic barrier against the transmission of noise from the fan.
I

Claims (6)

  1. Claims 1. An enclosure for a fan, the enclosure comprising an inner housing for enclosing the fan, and an outer housing, with acoustically absorbent material disposed between the walls of the inner and outer housings, wherein the inner housing is connected to the outer housing by a number of anti-vibration mounting blocks.
  2. 2. An enclosure according to claim 1 wherein the inner housing is formed of metal.
  3. 3. An enclosure according to claim 2 wherein the inner housing and/or outer housing has a square or rectangular cross section.
  4. 4. An enclosure according to any preceding claim wherein the anti-vibration mounting blocks are formed of elastomeric material.
  5. 5. An enclosure according to any preceding claims wherein the anti-vibration mounting blocks interconnect the walls of the inner and outer housings at spaced apart intervals.
  6. 6. An enclosure according to any preceding claim, further comprising a fan mounted to the inner housing.
GB1004516A 2005-05-12 2010-03-18 An enclosure for a fan Withdrawn GB2468778A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1004516A GB2468778A (en) 2005-05-12 2010-03-18 An enclosure for a fan

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0509694A GB2426286B (en) 2005-05-12 2005-05-12 Fan enclosure
GB1004516A GB2468778A (en) 2005-05-12 2010-03-18 An enclosure for a fan

Publications (2)

Publication Number Publication Date
GB201004516D0 GB201004516D0 (en) 2010-05-05
GB2468778A true GB2468778A (en) 2010-09-22

Family

ID=42227919

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1004516A Withdrawn GB2468778A (en) 2005-05-12 2010-03-18 An enclosure for a fan

Country Status (1)

Country Link
GB (1) GB2468778A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014135396A1 (en) * 2013-03-08 2014-09-12 Fergas Ab Fan unit
FR3034504A1 (en) * 2015-04-03 2016-10-07 Atlantic Climatisation & Ventilation VENTILATION MODULE OF A VENTILATION SYSTEM FOR HOUSING
CN107035725A (en) * 2017-05-18 2017-08-11 朱德金 A kind of suction pump with decrease of noise functions

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB433850A (en) * 1934-10-11 1935-08-21 Baumgarten G M B H Electric vacuum cleaner
WO1983004287A1 (en) * 1982-05-28 1983-12-08 Peabody Fans Ventilation fan with noise-attenuating housing
DE4345079A1 (en) * 1993-12-31 1995-07-06 Missel Gmbh & Co E Assembly block for attaching building and technical equipment and / or systems
JP2000027798A (en) * 1998-07-10 2000-01-25 Mitsubishi Electric Corp Air blowing device
GB2362926A (en) * 2000-02-22 2001-12-05 Robert Alan Gladden Ventilation system
EP1453181A2 (en) * 2003-02-28 2004-09-01 Sanden Corporation Supporting structure for blower motor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB433850A (en) * 1934-10-11 1935-08-21 Baumgarten G M B H Electric vacuum cleaner
WO1983004287A1 (en) * 1982-05-28 1983-12-08 Peabody Fans Ventilation fan with noise-attenuating housing
DE4345079A1 (en) * 1993-12-31 1995-07-06 Missel Gmbh & Co E Assembly block for attaching building and technical equipment and / or systems
JP2000027798A (en) * 1998-07-10 2000-01-25 Mitsubishi Electric Corp Air blowing device
GB2362926A (en) * 2000-02-22 2001-12-05 Robert Alan Gladden Ventilation system
EP1453181A2 (en) * 2003-02-28 2004-09-01 Sanden Corporation Supporting structure for blower motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014135396A1 (en) * 2013-03-08 2014-09-12 Fergas Ab Fan unit
FR3034504A1 (en) * 2015-04-03 2016-10-07 Atlantic Climatisation & Ventilation VENTILATION MODULE OF A VENTILATION SYSTEM FOR HOUSING
CN107035725A (en) * 2017-05-18 2017-08-11 朱德金 A kind of suction pump with decrease of noise functions

Also Published As

Publication number Publication date
GB201004516D0 (en) 2010-05-05

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)