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GB1107726A - Improved centrifugal fan or blower and a ventilator embodying the same - Google Patents

Improved centrifugal fan or blower and a ventilator embodying the same

Info

Publication number
GB1107726A
GB1107726A GB27898/64A GB2789864A GB1107726A GB 1107726 A GB1107726 A GB 1107726A GB 27898/64 A GB27898/64 A GB 27898/64A GB 2789864 A GB2789864 A GB 2789864A GB 1107726 A GB1107726 A GB 1107726A
Authority
GB
United Kingdom
Prior art keywords
fan
casing
air
slab
july
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.)
Expired
Application number
GB27898/64A
Inventor
Andrew Wilson Percy
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.)
Sound Attenuators Ltd
Original Assignee
Sound Attenuators 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 Sound Attenuators Ltd filed Critical Sound Attenuators Ltd
Priority to GB27898/64A priority Critical patent/GB1107726A/en
Priority to CH949765A priority patent/CH439569A/en
Priority to DE19651503610 priority patent/DE1503610A1/en
Publication of GB1107726A publication Critical patent/GB1107726A/en
Expired 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
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials 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
    • 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
    • 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
    • F05D2260/00—Function
    • F05D2260/96—Preventing, counteracting or reducing vibration or noise
    • 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
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
    • 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
    • F05D2300/514—Porosity

Landscapes

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

Abstract

1,107,726. Centrifugal fans etc.; silencing gaseous flow. SOUND ATTENUATORS Ltd. July 7, 1965 [July 7, 1964], No.27898/64. Headings F1B and F1C. The casing 2 of a centrifugal fan is lined with a slab 10 of air-permeable sound-absorbent material such as expanded polyurethane (which may be of laminated construction), expanded polystyrene or bonded mineral fibres affording the volute surface 9. The material absorbs noise generated within the fan and also attenuates noise which might otherwise be transmitted through the fan from, e. g., the exterior of a building in the case of a fan built into a wall-mounted ventilator drawing fresh air into a room from outside the building. The fan impeller 7 surrounds the electric driving motor which is resiliently mounted on the back plate 1 of the casing. A filter 11 may be mounted in front of the inlet 3. Air-impermeable baffles extending from the surface 9 to the wall of the casing 2 may be provided to divide the slab 10 into a number of chambers of different shape and size and having different frequency bands of maximum sound attenuation. Two impellers may be mounted in a common casing having a common outlet and a separate inlet for each impeller.
GB27898/64A 1964-07-07 1964-07-07 Improved centrifugal fan or blower and a ventilator embodying the same Expired GB1107726A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB27898/64A GB1107726A (en) 1964-07-07 1964-07-07 Improved centrifugal fan or blower and a ventilator embodying the same
CH949765A CH439569A (en) 1964-07-07 1965-07-07 Centrifugal fan
DE19651503610 DE1503610A1 (en) 1964-07-07 1965-07-07 Low-noise centrifugal fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27898/64A GB1107726A (en) 1964-07-07 1964-07-07 Improved centrifugal fan or blower and a ventilator embodying the same

Publications (1)

Publication Number Publication Date
GB1107726A true GB1107726A (en) 1968-03-27

Family

ID=10267063

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27898/64A Expired GB1107726A (en) 1964-07-07 1964-07-07 Improved centrifugal fan or blower and a ventilator embodying the same

Country Status (3)

Country Link
CH (1) CH439569A (en)
DE (1) DE1503610A1 (en)
GB (1) GB1107726A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001135A (en) * 1977-07-13 1979-01-24 Carrier Corp Pressure variation absorber
GB2242482A (en) * 1990-03-26 1991-10-02 Gen Motors Corp Electric motor-driven impeller-type air pump
CN105673569A (en) * 2016-03-28 2016-06-15 广东美的制冷设备有限公司 Fan component, air conditioner indoor unit and air conditioner
CN112555195A (en) * 2019-09-26 2021-03-26 日本电产株式会社 Centrifugal fan

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4128364A (en) * 1972-11-23 1978-12-05 Papst-Motoren Kg Radial flow fan with motor cooling and resilient support of rotor shaft
US4174020A (en) * 1975-07-01 1979-11-13 Challis Louis A Acoustic treatment for fans
HU173594B (en) * 1976-10-21 1979-06-28 Fuetoeber Epueletgep Termekek Ventilator scroll case with silencing insert of non-uniform thickness
FR2469770A1 (en) * 1979-11-13 1981-05-22 Tuzelestechnikai Kutatointezet Fan with inherent sound insulation - has casing made of sound absorbing plastics with impeller on metal plate cast into casing
DE3151386A1 (en) * 1981-12-24 1983-07-14 FSL Fenster-System-Lüftung GmbH, 6800 Mannheim FAN, ESPECIALLY BUILT-IN BLOWER
DE3441769A1 (en) * 1984-01-14 1985-07-18 Siegenia-Frank Kg, 5900 Siegen VENTILATION DEVICE FOR ROOMS
DE8400940U1 (en) * 1984-01-14 1984-04-05 Siegenia-Frank Kg, 5900 Siegen VENTILATION DEVICE FOR ROOMS
DE3806391A1 (en) * 1988-02-29 1989-09-07 Leidse Houthandel VENTILATION DEVICE
JP2846167B2 (en) * 1991-10-09 1999-01-13 株式会社日立製作所 Centrifugal blower, blower of automotive air conditioner and automotive air conditioner equipped with centrifugal blower
DE4443176C1 (en) * 1994-12-05 1996-05-02 Gaggenau Werke Low-noise extractor hood
DE4445286C2 (en) * 1994-12-19 1998-12-24 Bosch Siemens Hausgeraete Refrigerator
ATE209303T1 (en) * 1996-05-03 2001-12-15 Idr Holding Sa CENTRIFUGAL FAN
DE202015102251U1 (en) * 2015-05-04 2016-08-05 Rehau Ag & Co Fan unit for ventilation of rooms of a building and frame assembly comprising such a fan unit

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001135A (en) * 1977-07-13 1979-01-24 Carrier Corp Pressure variation absorber
GB2001135B (en) * 1977-07-13 1982-01-27 Carrier Corp Pressure variation absorber
GB2242482A (en) * 1990-03-26 1991-10-02 Gen Motors Corp Electric motor-driven impeller-type air pump
GB2242482B (en) * 1990-03-26 1993-05-12 Gen Motors Corp Electric motor-driven impeller-type air pump
CN105673569A (en) * 2016-03-28 2016-06-15 广东美的制冷设备有限公司 Fan component, air conditioner indoor unit and air conditioner
CN112555195A (en) * 2019-09-26 2021-03-26 日本电产株式会社 Centrifugal fan
CN112555195B (en) * 2019-09-26 2022-10-25 日本电产株式会社 Centrifugal fan

Also Published As

Publication number Publication date
CH439569A (en) 1967-07-15
DE1503610A1 (en) 1970-04-16

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