GB772888A - Fan housing - Google Patents
Fan housingInfo
- 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
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
- F04D29/4246—Fan casings comprising more than one outlet
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/0003—Atomisers or mist blowers
- A01M7/0014—Field 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.
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)
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 |
-
1955
- 1955-06-24 GB GB18296/55A patent/GB772888A/en not_active Expired
Cited By (10)
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 |
US11878123B2 (en) | 2008-06-05 | 2024-01-23 | 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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