GB1345465A - Centrifugal fan with free floating damper - Google Patents

Centrifugal fan with free floating damper

Info

Publication number
GB1345465A
GB1345465A GB2607372A GB2607372A GB1345465A GB 1345465 A GB1345465 A GB 1345465A GB 2607372 A GB2607372 A GB 2607372A GB 2607372 A GB2607372 A GB 2607372A GB 1345465 A GB1345465 A GB 1345465A
Authority
GB
United Kingdom
Prior art keywords
rim
rotor
closure member
abuts
june
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
GB2607372A
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.)
ILG IND Inc
Original Assignee
ILG IND Inc
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 ILG IND Inc filed Critical ILG IND Inc
Publication of GB1345465A publication Critical patent/GB1345465A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/02—Roof ventilation
    • F24F7/025—Roof ventilation with forced air circulation by means of a built-in ventilator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/12—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures
    • F04D25/14—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures and having shutters, e.g. automatically closed when not in use

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

1345465 Centrifugal fans ILG INDUSTRIES Inc 5 June 1972 [15 June 1971] 26073/72 Heading F1C [Also in Division F2] A centrifugal ventilating fan has a rotor 34 with a freely floating closure member 36 disposed centrally of the blades 66 and guided thereby between a position, shown, in which it prevents backflow of air through the fan intake and a non- obturating position in which it abuts pads 88 on the rotor backplate 62. In the closed position shown the rim of closure member 36 abuts the lip 72 of rotor blade retaining ring 64, but in a modification Fig. 5, (not shown) the closure member abuts the rim 46 of fixed inlet cone 24. The rim of member 36 may have notches (92), Fig.4 (not shown) which freely engage the inner edges 78 of blades 66. Member 36 is of thin sheet metal, polyester reinforced with glass fibres, or a thermo-plastic resin and is flexible so that it can be inserted into rotor 34 via inlet cone 24. Figs. 6 to 9 (not shown) illustrate modified forms of closure member including rubber or plastics rim reinforcements (114, 117) and vanes (126) on the underside of the member to assist rotation thereof.
GB2607372A 1971-06-15 1972-06-05 Centrifugal fan with free floating damper Expired GB1345465A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15324771A 1971-06-15 1971-06-15

Publications (1)

Publication Number Publication Date
GB1345465A true GB1345465A (en) 1974-01-30

Family

ID=22546377

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2607372A Expired GB1345465A (en) 1971-06-15 1972-06-05 Centrifugal fan with free floating damper

Country Status (6)

Country Link
AU (1) AU4295972A (en)
DE (1) DE2227937A1 (en)
FR (1) FR2142386A5 (en)
GB (1) GB1345465A (en)
IT (1) IT958228B (en)
NL (1) NL7208183A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5161941A (en) * 1990-08-28 1992-11-10 Sinko Kogyo, Co, Ltd. Actuator assembly for controlling inlet air flow to centrifugal fans
WO2016149755A1 (en) * 2015-03-23 2016-09-29 Ivr Group Pty Ltd Vent

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5161941A (en) * 1990-08-28 1992-11-10 Sinko Kogyo, Co, Ltd. Actuator assembly for controlling inlet air flow to centrifugal fans
WO2016149755A1 (en) * 2015-03-23 2016-09-29 Ivr Group Pty Ltd Vent
EP3274634A4 (en) * 2015-03-23 2018-12-19 IVR Group Pty Ltd Vent
AU2016236842B2 (en) * 2015-03-23 2021-07-15 Consolidated Ventilation Equipment Pty Vent

Also Published As

Publication number Publication date
IT958228B (en) 1973-10-20
DE2227937A1 (en) 1972-12-21
NL7208183A (en) 1972-12-19
FR2142386A5 (en) 1973-01-26
AU4295972A (en) 1973-12-06

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee