GB772888A - Fan housing - Google Patents

Fan housing

Info

Publication number
GB772888A
GB772888A GB18296/55A GB1829655A GB772888A GB 772888 A GB772888 A GB 772888A GB 18296/55 A GB18296/55 A GB 18296/55A GB 1829655 A GB1829655 A GB 1829655A GB 772888 A GB772888 A GB 772888A
Authority
GB
United Kingdom
Prior art keywords
point
fan
scroll
discharge openings
discharge
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
GB18296/55A
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.)
ALFRED LOKDAM
POUL RICHARD CHRISTENSEN
Original Assignee
ALFRED LOKDAM
POUL RICHARD CHRISTENSEN
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 DK772888X external-priority
Application filed by ALFRED LOKDAM, POUL RICHARD CHRISTENSEN filed Critical ALFRED LOKDAM
Publication of GB772888A publication Critical patent/GB772888A/en
Expired legal-status Critical Current

Links

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
    • F04D29/40Casings; Connections of working fluid
    • F04D29/42Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226Fan casings
    • F04D29/4246Fan casings comprising more than one outlet
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01MCATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M7/00Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
    • A01M7/0003Atomisers or mist blowers
    • A01M7/0014Field atomisers, e.g. orchard atomisers, self-propelled, drawn or tractor-mounted

Abstract

772,888. Centrifugal fans. CHRISTENSEN, P. R., and LOKDAM, A. June 24, 1955 [Dec. 21, 1954], No. 18296/55. Class 110 (1). In a fan housing with a number of discharge openings or pipes arranged along a portion of the periphery to discharge air in a tangential direction, the scroll along that part of the periphery where there are no discharge openings is shaped so that firstly its distance from the fan axis gradually increases, and secondly its axial width gradually increases to one or both sides of the fan, the remainder of the scroll being concentric with the axis while its width decreases after each discharge opening. The scroll 3 is of increasing distance from the fan axis up to a point 6 and is of increasing width from point 6 to a point 7. Housing side plate 2 has a frustoconical part 8 extending from a point 11 to a point 12. The scroll 3 and side plate 2 are stepped as shown to form axially staggered discharge openings 10, 15, 16, 18 which may be of increasing area from 10 to 18. One or more guide vanes may be provided in one or more of the discharge openings to give the air a bias in the axial direction. The fan may be used for ventilation, with separate ducts leading to different rooms, or for spraying fruit trees.
GB18296/55A 1954-12-21 1955-06-24 Fan housing Expired GB772888A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK772888X 1954-12-21

Publications (1)

Publication Number Publication Date
GB772888A true GB772888A (en) 1957-04-17

Family

ID=8152729

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18296/55A Expired GB772888A (en) 1954-12-21 1955-06-24 Fan housing

Country Status (1)

Country Link
GB (1) GB772888A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2317150A1 (en) * 2009-10-29 2011-05-04 ResMed Ltd. Patient ventilation device and components thereof
EP2220376A4 (en) * 2007-11-16 2016-04-27 Lg Electronics Inc Fan
US10806889B2 (en) 2008-06-05 2020-10-20 ResMed Pty Ltd Treatment of respiratory conditions

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2220376A4 (en) * 2007-11-16 2016-04-27 Lg Electronics Inc Fan
US10806889B2 (en) 2008-06-05 2020-10-20 ResMed Pty Ltd Treatment of respiratory conditions
US11229766B2 (en) 2008-06-05 2022-01-25 ResMed Pty Ltd Treatment of respiratory conditions
US11247019B2 (en) 2008-06-05 2022-02-15 ResMed Pty Ltd Treatment of respiratory conditions
US11433213B2 (en) 2008-06-05 2022-09-06 ResMed Pty Ltd Treatment of respiratory conditions
EP2317150A1 (en) * 2009-10-29 2011-05-04 ResMed Ltd. Patient ventilation device and components thereof
US9512856B2 (en) 2009-10-29 2016-12-06 Resmed Limited Patient ventilation device including blower with divided air outlet channels
US10578118B2 (en) 2009-10-29 2020-03-03 ResMed Pty Ltd Patient ventilation device including blower with divided air outlet channels
US10975880B2 (en) 2009-10-29 2021-04-13 ResMed Pty Ltd Patient ventilation device including blower with scallopped shroud

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