GB1502781A - Centrifugal fans and pumps - Google Patents

Centrifugal fans and pumps

Info

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
Application number
GB4321374A
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.)
UK Secretary of State for Industry
Original Assignee
UK Secretary of State for Industry
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 UK Secretary of State for Industry filed Critical UK Secretary of State for Industry
Priority to GB4321374A priority Critical patent/GB1502781A/en
Publication of GB1502781A publication Critical patent/GB1502781A/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
    • 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.
GB4321374A 1975-10-06 1975-10-06 Centrifugal fans and pumps Expired GB1502781A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (12)

* Cited by examiner, † Cited by third party
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