EP0099615A3 - Centrifugal fan with flow control - Google Patents

Centrifugal fan with flow control Download PDF

Info

Publication number
EP0099615A3
EP0099615A3 EP83301462A EP83301462A EP0099615A3 EP 0099615 A3 EP0099615 A3 EP 0099615A3 EP 83301462 A EP83301462 A EP 83301462A EP 83301462 A EP83301462 A EP 83301462A EP 0099615 A3 EP0099615 A3 EP 0099615A3
Authority
EP
European Patent Office
Prior art keywords
blades
impeller
centrifugal fan
inner edges
flow control
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.)
Withdrawn
Application number
EP83301462A
Other languages
German (de)
French (fr)
Other versions
EP0099615A2 (en
Inventor
William Thomas Worthington Cory
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.)
KEITH BLACKMAN Ltd
Original Assignee
KEITH BLACKMAN Ltd
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 KEITH BLACKMAN Ltd filed Critical KEITH BLACKMAN Ltd
Publication of EP0099615A2 publication Critical patent/EP0099615A2/en
Publication of EP0099615A3 publication Critical patent/EP0099615A3/en
Withdrawn legal-status Critical Current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
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/003—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by throttling

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

A centrifugal fan having the inner edges of the impeller blades (7) extending parallel to the impeller axis incorporates a circular damper plate (11) supported coaxially within the array of blades with its edge closely adjacent the inner edges of the blades, and movable in an axial direction so as to vary the useful width of the blades and thereby the flow rate. The damper plate, being separate from the impeller (2), may be supported in a non-rotatable manner and enables the fan to operate at an efficiency comparable with one having a radial vane damper, but is simpler mechanically as it requires only a single primary moving part.
EP83301462A 1982-04-28 1983-03-16 Centrifugal fan with flow control Withdrawn EP0099615A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8212312 1982-04-28
GB8212312 1982-04-28

Publications (2)

Publication Number Publication Date
EP0099615A2 EP0099615A2 (en) 1984-02-01
EP0099615A3 true EP0099615A3 (en) 1984-08-08

Family

ID=10530035

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83301462A Withdrawn EP0099615A3 (en) 1982-04-28 1983-03-16 Centrifugal fan with flow control

Country Status (9)

Country Link
EP (1) EP0099615A3 (en)
JP (1) JPS58190599A (en)
AU (1) AU555454B2 (en)
CA (1) CA1218635A (en)
DK (1) DK161283A (en)
HK (1) HK70486A (en)
MY (1) MY8700205A (en)
NO (1) NO831256L (en)
NZ (1) NZ203561A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2224076A (en) * 1988-08-03 1990-04-25 Atomic Energy Authority Uk Controlling pumps

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1834959A (en) * 1929-02-14 1931-12-08 Comb Eer Inc Blower

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2311061A1 (en) * 1973-03-06 1974-09-12 Maschf Augsburg Nuernberg Ag DEVICE FOR SEALING AND SECURING A CYLINDER LID

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1834959A (en) * 1929-02-14 1931-12-08 Comb Eer Inc Blower

Also Published As

Publication number Publication date
CA1218635A (en) 1987-03-03
NO831256L (en) 1983-10-31
JPS58190599A (en) 1983-11-07
DK161283A (en) 1983-10-29
HK70486A (en) 1986-09-26
MY8700205A (en) 1987-12-31
AU555454B2 (en) 1986-09-25
EP0099615A2 (en) 1984-02-01
DK161283D0 (en) 1983-04-13
AU1403183A (en) 1983-11-03
NZ203561A (en) 1986-04-11

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): AT BE CH DE FR IT LI LU NL SE

PUAL Search report despatched

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AK Designated contracting states

Designated state(s): AT BE CH DE FR IT LI LU NL SE

17P Request for examination filed

Effective date: 19840808

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19851007

RIN1 Information on inventor provided before grant (corrected)

Inventor name: CORY, WILLIAM THOMAS WORTHINGTON