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GB1005139A - Axial-flow blower - Google Patents

Axial-flow blower

Info

Publication number
GB1005139A
GB1005139A GB38746/63A GB3874663A GB1005139A GB 1005139 A GB1005139 A GB 1005139A GB 38746/63 A GB38746/63 A GB 38746/63A GB 3874663 A GB3874663 A GB 3874663A GB 1005139 A GB1005139 A GB 1005139A
Authority
GB
United Kingdom
Prior art keywords
hub
rotor
blower
axial
flow
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
GB38746/63A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1005139A publication Critical patent/GB1005139A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • 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
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
    • F04D29/164—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of an axial flow wheel
    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/326—Rotors specially for elastic fluids for axial flow pumps for axial flow fans comprising a rotating shroud
    • 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
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/545—Ducts
    • F04D29/547—Ducts having a special shape in order to influence fluid flow

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

1,005,139. Axial-flow blowers. T. HELMBOLD. Oct. 2, 1963 [Oct. 16, 1962], No. 38746/63. Addition to 992,266. Heading F1C. In an axial-flow blower with a rotor having a shroud ring 7 extending in both axial directions a substantial distance beyond the rotor blades, one end of an intake nozzle 5 extends into the shroud ring. Thus an annular gap 10 is formed which together with a gap 8 permits a vortex flow across the ring 7. Additionally, a vortex flow across the hub 11 is permitted by passages in the hub and a gap 12 formed between the hub and a stationary cap 3 carrying the rotor mounting and drive means. In multi-stage blowers the cap may project into the hub and air may be sucked away from one of the upstream stages. The vortices promote a diffuser action at the blower delivery. In an alternative embodiment (not shown), the mounting and drive means are arranged downstream of the rotor, and the rotor hub is closed at its upstream end by a hemispherical part, thus no vortext occurs at the hub. Further, the upstream end of the blower outer casing curves outwardly parallel to the mouth of the intake nozzle and provides a passage therebetween for a second vortex at the outer casing, between the blower delivery and the suction side of the nozzle.
GB38746/63A 1961-09-11 1963-10-02 Axial-flow blower Expired GB1005139A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEH0043616 1961-09-11
DEH0047156 1962-10-16

Publications (1)

Publication Number Publication Date
GB1005139A true GB1005139A (en) 1965-09-22

Family

ID=25979815

Family Applications (2)

Application Number Title Priority Date Filing Date
GB15712/62A Expired GB992266A (en) 1961-09-11 1962-04-25 Axial-flow blower
GB38746/63A Expired GB1005139A (en) 1961-09-11 1963-10-02 Axial-flow blower

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB15712/62A Expired GB992266A (en) 1961-09-11 1962-04-25 Axial-flow blower

Country Status (2)

Country Link
CH (2) CH413197A (en)
GB (2) GB992266A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4786231A (en) * 1986-12-01 1988-11-22 Kelley Winfield L Noise attenuating and air streamlining spiral
GB2300883A (en) * 1995-04-20 1996-11-20 Bosch Gmbh Robert Combustible blower with radial rotor wheel
TWI683965B (en) * 2017-06-21 2020-02-01 日商日立環球生活方案股份有限公司 Electric blower

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4370096A (en) 1978-08-30 1983-01-25 Propeller Design Limited Marine propeller
SE451873B (en) * 1982-07-29 1987-11-02 Do G Pk I Experiment AXIALFLEKT
DE4310104C2 (en) * 1993-03-27 1997-04-30 Deutsche Forsch Luft Raumfahrt Process for reducing noise emissions and for improving air performance and efficiency in an axial turbomachine and turbomachine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4786231A (en) * 1986-12-01 1988-11-22 Kelley Winfield L Noise attenuating and air streamlining spiral
GB2300883A (en) * 1995-04-20 1996-11-20 Bosch Gmbh Robert Combustible blower with radial rotor wheel
GB2300883B (en) * 1995-04-20 1997-09-03 Bosch Gmbh Robert Combustor blower with radial rotor wheel
TWI683965B (en) * 2017-06-21 2020-02-01 日商日立環球生活方案股份有限公司 Electric blower

Also Published As

Publication number Publication date
CH413197A (en) 1966-05-15
CH435532A (en) 1967-05-15
GB992266A (en) 1965-05-19

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