GB1512559A - Controllable pitch axial flow fans - Google Patents

Controllable pitch axial flow fans

Info

Publication number
GB1512559A
GB1512559A GB49485/75A GB4948575A GB1512559A GB 1512559 A GB1512559 A GB 1512559A GB 49485/75 A GB49485/75 A GB 49485/75A GB 4948575 A GB4948575 A GB 4948575A GB 1512559 A GB1512559 A GB 1512559A
Authority
GB
United Kingdom
Prior art keywords
cage
section
axial flow
controllable pitch
sidewalls
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
GB49485/75A
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.)
Woods of Colchester Ltd
Original Assignee
Woods of Colchester 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 Woods of Colchester Ltd filed Critical Woods of Colchester Ltd
Priority to GB49485/75A priority Critical patent/GB1512559A/en
Publication of GB1512559A publication Critical patent/GB1512559A/en
Priority to HK486/81A priority patent/HK48681A/en
Priority to HK487/81A priority patent/HK48781A/en
Priority to MY140/82A priority patent/MY8200140A/en
Priority to MY139/82A priority patent/MY8200139A/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
    • 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
    • F04D29/34—Blade mountings
    • F04D29/36—Blade mountings adjustable
    • F04D29/362—Blade mountings adjustable during rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/3806—Details of interaction of cage and race, e.g. retention, centring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/10—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for axial load mainly

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

1512559 Bearings WOODS OF COLCHESTER Ltd 10 Nov 1976 [2 Dec 1975] 49485/75 Heading F2A [Also in Division F1] In an axial flow fan with controllable pitch blades, each blade 3 is supported in a bearing comprising races 13, 14 and balls 12 which are held in part spherical packets in an annular cage 16 arranged so that during rotation of the impeller, the centrifugal force acting on the cage is taken on the outer race 14. The force on cage 16, which may be of "U" or "H" section, Figs. 4, 5, acts on the outer race 14 by abutment thereon, of the sidewalls 28 (in the case of "H" section), or the sidewalls 19 or base 18 (in the case of "U" section). The assembly is packed with lubricant of the same density as the cage 16 and contained within a "U" section annular housing 20 to keep the lubricant in place despite centrifugal loading.
GB49485/75A 1975-12-02 1975-12-02 Controllable pitch axial flow fans Expired GB1512559A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB49485/75A GB1512559A (en) 1975-12-02 1975-12-02 Controllable pitch axial flow fans
HK486/81A HK48681A (en) 1975-12-02 1981-10-08 Improvements in or relating to controllable pitch axial flow fans
HK487/81A HK48781A (en) 1975-12-02 1981-10-08 Improvements in or relating to controllable pitch axial flow fans
MY140/82A MY8200140A (en) 1975-12-02 1982-12-30 Improcvements in or relating to controllable pitch axial flow fans
MY139/82A MY8200139A (en) 1975-12-02 1982-12-30 Improvements in or relating to controllable pitch axial flow fans

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB49485/75A GB1512559A (en) 1975-12-02 1975-12-02 Controllable pitch axial flow fans

Publications (1)

Publication Number Publication Date
GB1512559A true GB1512559A (en) 1978-06-01

Family

ID=10452512

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49485/75A Expired GB1512559A (en) 1975-12-02 1975-12-02 Controllable pitch axial flow fans

Country Status (3)

Country Link
GB (1) GB1512559A (en)
HK (2) HK48781A (en)
MY (2) MY8200139A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4219310A (en) * 1978-01-18 1980-08-26 Hitachi, Ltd. Construction of adjustable blade shaft bearing in axial-flow fan with adjustable blades
US4545734A (en) * 1982-07-20 1985-10-08 J. M. Voith Gmbh Axial flow machine, particularly a blower, with adjustable rotor blades
US4668168A (en) * 1984-06-14 1987-05-26 J.M. Voith Gmbh Lubricating and cooling rotary bearings of axial blowers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4219310A (en) * 1978-01-18 1980-08-26 Hitachi, Ltd. Construction of adjustable blade shaft bearing in axial-flow fan with adjustable blades
US4545734A (en) * 1982-07-20 1985-10-08 J. M. Voith Gmbh Axial flow machine, particularly a blower, with adjustable rotor blades
US4668168A (en) * 1984-06-14 1987-05-26 J.M. Voith Gmbh Lubricating and cooling rotary bearings of axial blowers

Also Published As

Publication number Publication date
MY8200139A (en) 1982-12-31
HK48781A (en) 1981-10-16
MY8200140A (en) 1982-12-31
HK48681A (en) 1981-10-16

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19921110