GB672194A - Improvements in or relating to fans - Google Patents
Improvements in or relating to fansInfo
- Publication number
- GB672194A GB672194A GB23143/50A GB2314350A GB672194A GB 672194 A GB672194 A GB 672194A GB 23143/50 A GB23143/50 A GB 23143/50A GB 2314350 A GB2314350 A GB 2314350A GB 672194 A GB672194 A GB 672194A
- Authority
- GB
- United Kingdom
- Prior art keywords
- load
- whirl
- dampers
- vanes
- fan
- 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
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/56—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/563—Fluid-guiding means, e.g. diffusers adjustable 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
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/009—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by bleeding, by passing or recycling fluid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
672,194. Axial-flow fans. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Sept. 21, 1950 [Nov. 1, 1949], No. 23143/50. Class 110(i) A fan comprises an impeller and rotatably-mounted whirl-imparting vanes housed within an inner casing wall, and an outer casing wall spaced from the inner wall and forming a gas passage therewith.. The constant-speed driving motor 11, Fig. 1,. of the fan is supported by guide vanes 12 from an inner casing wall 13. To prevent instability at low loads, gas is recirculated from the outlet of the fan to the inlet, by way of an opening 22, a space 23 between the inner and outer walls 13, 16 of the casing, and a constricted nozzle 21 which increases the velocity of the gas before reentry. Whirl-imparting vanes 14 in the inlet and dampers 25 in the space 23 are carried by common pivot rods 15 which are operable in unison by means of a rod 18 actuated by a load-responsive piston (not shown). At full load, the vanes 14 are fully open, so that they impart no whirl, whilst the dampers 25 are fully closed, so that no recirculation takes place. As shown in Fig. 5, the dampers 25 have curved segments 30, so shaped that adjacent segments remain almost in contact during slight reductions below maximum load, but are moved increasingly further apart on further reductions of load. Reference has been directed by the Comptroller to Specification 564,686.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US672194XA | 1949-11-01 | 1949-11-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB672194A true GB672194A (en) | 1952-05-14 |
Family
ID=22074514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23143/50A Expired GB672194A (en) | 1949-11-01 | 1950-09-21 | Improvements in or relating to fans |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB672194A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1094915B (en) * | 1959-02-25 | 1960-12-15 | Bbc Brown Boveri & Cie | Control device for turbo machines |
| US3041848A (en) * | 1959-06-01 | 1962-07-03 | Garrett Corp | Variable head compressor |
| FR2386071A1 (en) * | 1977-03-31 | 1978-10-27 | Svenska Flaektfabriken Ab | DEBIT REGULATOR |
| WO1991018208A1 (en) * | 1990-05-11 | 1991-11-28 | M & Y Air Systems Limited | Air control valve |
| EP0477740A1 (en) * | 1990-09-25 | 1992-04-01 | Mitsubishi Jukogyo Kabushiki Kaisha | Axial-flow blower |
| GB2455553A (en) * | 2007-12-14 | 2009-06-17 | Nuaire Ltd | Axial flow fan motor mounting |
| CN103557186A (en) * | 2013-11-14 | 2014-02-05 | 武汉大学 | Adjustable axial flow pump with front guide vanes |
| CN113559561A (en) * | 2021-09-01 | 2021-10-29 | 程希媛 | A gas-liquid separator |
-
1950
- 1950-09-21 GB GB23143/50A patent/GB672194A/en not_active Expired
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1094915B (en) * | 1959-02-25 | 1960-12-15 | Bbc Brown Boveri & Cie | Control device for turbo machines |
| US3041848A (en) * | 1959-06-01 | 1962-07-03 | Garrett Corp | Variable head compressor |
| FR2386071A1 (en) * | 1977-03-31 | 1978-10-27 | Svenska Flaektfabriken Ab | DEBIT REGULATOR |
| WO1991018208A1 (en) * | 1990-05-11 | 1991-11-28 | M & Y Air Systems Limited | Air control valve |
| EP0477740A1 (en) * | 1990-09-25 | 1992-04-01 | Mitsubishi Jukogyo Kabushiki Kaisha | Axial-flow blower |
| AU638357B2 (en) * | 1990-09-25 | 1993-06-24 | Mitsubishi Jukogyo Kabushiki Kaisha | Axial-flow blower |
| US5230605A (en) * | 1990-09-25 | 1993-07-27 | Mitsubishi Jukogyo Kabushiki Kaisha | Axial-flow blower |
| GB2455553A (en) * | 2007-12-14 | 2009-06-17 | Nuaire Ltd | Axial flow fan motor mounting |
| GB2455553B (en) * | 2007-12-14 | 2012-10-24 | Nuaire Ltd | Motor mounting assembly for an axial fan |
| CN103557186A (en) * | 2013-11-14 | 2014-02-05 | 武汉大学 | Adjustable axial flow pump with front guide vanes |
| CN113559561A (en) * | 2021-09-01 | 2021-10-29 | 程希媛 | A gas-liquid separator |
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