GB1345465A - Centrifugal fan with free floating damper - Google Patents
Centrifugal fan with free floating damperInfo
- 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
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.
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)
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 |
-
1972
- 1972-05-31 AU AU42959/72A patent/AU4295972A/en not_active Expired
- 1972-06-05 GB GB2607372A patent/GB1345465A/en not_active Expired
- 1972-06-06 IT IT5071772A patent/IT958228B/en active
- 1972-06-08 DE DE19722227937 patent/DE2227937A1/en active Pending
- 1972-06-12 FR FR7221014A patent/FR2142386A5/fr not_active Expired
- 1972-06-15 NL NL7208183A patent/NL7208183A/xx not_active Application Discontinuation
Cited By (4)
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 |