GB1502781A - Centrifugal fans and pumps - Google Patents
Centrifugal fans and pumpsInfo
- Publication number
- GB1502781A GB1502781A GB4321374A GB4321374A GB1502781A GB 1502781 A GB1502781 A GB 1502781A GB 4321374 A GB4321374 A GB 4321374A GB 4321374 A GB4321374 A GB 4321374A GB 1502781 A GB1502781 A GB 1502781A
- Authority
- GB
- United Kingdom
- Prior art keywords
- impeller
- flow
- control plate
- baffle plate
- impellers
- 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
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0027—Varying behaviour or the very pump
- F04D15/0038—Varying behaviour or the very pump by varying the effective cross-sectional area of flow through the rotor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
1502781 Centrifugal fans and pumps INDUSTRY SECRETARY OF STATE FOR 6 Oct 1975 [4 Oct 1974] 43213/74 Heading F1C The flow-path through a centrifugal fan or pump impeller is controlled by an axially movable control plate 24. At low flow-rates the control plate 24 is moved to the position in which it aligns with the radially inner end of an annular baffle plate 8 whereby flow is confined to the region 9 of the impeller blading 2 and the flow velocity is consequently high enough to avoid stalling or cavitation. To save weight, the baffle plate 8 need not extend fully to the outer periphery of the impeller. There may be several baffle plates, the control plate 24 being alignable with each baffle plate in turn to direct the flow through a corresponding proportion of the impeller width. The impeller may comprise, in effect, two or more contiguous impellers differing in radial dimensions. Two impellers, each having its own control plate, may be arranged back-toback to constitute a double-entry impeller unit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4321374A GB1502781A (en) | 1975-10-06 | 1975-10-06 | Centrifugal fans and pumps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4321374A GB1502781A (en) | 1975-10-06 | 1975-10-06 | Centrifugal fans and pumps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1502781A true GB1502781A (en) | 1978-03-01 |
Family
ID=10427770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4321374A Expired GB1502781A (en) | 1975-10-06 | 1975-10-06 | Centrifugal fans and pumps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1502781A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2119440A (en) * | 1982-04-28 | 1983-11-16 | Blackman Keith Ltd | Centrifugal fans |
GB2240708A (en) * | 1990-02-09 | 1991-08-14 | Zanussi A Spa Industrie | Dishwashing or laundry washing; pump with flow regulator |
US5161941A (en) * | 1990-08-28 | 1992-11-10 | Sinko Kogyo, Co, Ltd. | Actuator assembly for controlling inlet air flow to centrifugal fans |
US5827044A (en) * | 1997-03-26 | 1998-10-27 | Yazici; Muammer | Fan system with variable air volume control |
US5951245A (en) * | 1997-10-06 | 1999-09-14 | Ford Motor Company | Centrifugal fan assembly for an automotive vehicle |
US6092988A (en) * | 1998-07-06 | 2000-07-25 | Ford Motor Company | Centrifugal blower assembly with a pre-swirler for an automotive vehicle |
DE102005031420A1 (en) * | 2005-07-04 | 2007-01-18 | Al-Ko Kober Ag | Combined submerged/flat-suction rotary pump, e.g. for sucking off dirty water/sewage, has an electric drive with a casing, a pump casing and an impeller |
WO2012167953A1 (en) * | 2011-06-07 | 2012-12-13 | Schaeffler Technologies AG & Co. KG | Controllable coolant pump |
CN109340135A (en) * | 2018-12-15 | 2019-02-15 | 阜宁隆德机械制造有限责任公司 | A kind of water pump of regulating flow quantity |
CN113107874A (en) * | 2020-11-17 | 2021-07-13 | 北京航空航天大学 | Centrifugal contra-rotating air pump with axial air inlet at two ends |
-
1975
- 1975-10-06 GB GB4321374A patent/GB1502781A/en not_active Expired
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2119440A (en) * | 1982-04-28 | 1983-11-16 | Blackman Keith Ltd | Centrifugal fans |
GB2240708A (en) * | 1990-02-09 | 1991-08-14 | Zanussi A Spa Industrie | Dishwashing or laundry washing; pump with flow regulator |
GB2240708B (en) * | 1990-02-09 | 1993-10-20 | Zanussi A Spa Industrie | Dishwashing or laundry washing pump with flow regulator |
US5161941A (en) * | 1990-08-28 | 1992-11-10 | Sinko Kogyo, Co, Ltd. | Actuator assembly for controlling inlet air flow to centrifugal fans |
US5827044A (en) * | 1997-03-26 | 1998-10-27 | Yazici; Muammer | Fan system with variable air volume control |
US5951245A (en) * | 1997-10-06 | 1999-09-14 | Ford Motor Company | Centrifugal fan assembly for an automotive vehicle |
US6092988A (en) * | 1998-07-06 | 2000-07-25 | Ford Motor Company | Centrifugal blower assembly with a pre-swirler for an automotive vehicle |
DE102005031420A1 (en) * | 2005-07-04 | 2007-01-18 | Al-Ko Kober Ag | Combined submerged/flat-suction rotary pump, e.g. for sucking off dirty water/sewage, has an electric drive with a casing, a pump casing and an impeller |
DE102005031420B4 (en) * | 2005-07-04 | 2010-07-08 | Al-Ko Kober Ag | Combined immersion / flat suction rotary pump with concentric impeller inlet opening |
WO2012167953A1 (en) * | 2011-06-07 | 2012-12-13 | Schaeffler Technologies AG & Co. KG | Controllable coolant pump |
CN109340135A (en) * | 2018-12-15 | 2019-02-15 | 阜宁隆德机械制造有限责任公司 | A kind of water pump of regulating flow quantity |
CN113107874A (en) * | 2020-11-17 | 2021-07-13 | 北京航空航天大学 | Centrifugal contra-rotating air pump with axial air inlet at two ends |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |