GB1171029A - Automatic Damper Arrangement for Exhaust Ventilating Installation. - Google Patents
Automatic Damper Arrangement for Exhaust Ventilating Installation.Info
- Publication number
- GB1171029A GB1171029A GB3427467A GB3427467A GB1171029A GB 1171029 A GB1171029 A GB 1171029A GB 3427467 A GB3427467 A GB 3427467A GB 3427467 A GB3427467 A GB 3427467A GB 1171029 A GB1171029 A GB 1171029A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fans
- fan
- automatic damper
- pivoted
- air
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Flow Control Members (AREA)
- Ventilation (AREA)
Abstract
1,171,029. Roof ventilators. SUPERVENTS Ltd. 1 Aug., 1968 [26 July, 1967], No. 34274/67. Heading F4V. In a roof ventilator having a main and a standby fan an automatic damper is provided comprising two outlets both of which are normally partly open, but when one fan is started the associated outlet is opened fully by the force of air and the other outlet is closed. The closure members 43, 44 are pivoted (or in some embodiments rigidly fixed) to a beam 39 pivoted at its mid-point to a bracket 40. The fans 36, 37 may be single or double inlet centrifugal fans or axial flow fans. When fan 37 is operated, member 44 swings fully open to the full line position and member 43 closes the other aperture. In other embodiments, the fans may both discharge upwardly (Fig. 2) or may be placed side by side (Fig. 10); the dampers may carry weights (Fig. 4) or may be shaped to facilitate the outflow of air (Fig. 6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3427467A GB1171029A (en) | 1967-07-26 | 1967-07-26 | Automatic Damper Arrangement for Exhaust Ventilating Installation. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3427467A GB1171029A (en) | 1967-07-26 | 1967-07-26 | Automatic Damper Arrangement for Exhaust Ventilating Installation. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1171029A true GB1171029A (en) | 1969-11-19 |
Family
ID=10363588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3427467A Expired GB1171029A (en) | 1967-07-26 | 1967-07-26 | Automatic Damper Arrangement for Exhaust Ventilating Installation. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1171029A (en) |
-
1967
- 1967-07-26 GB GB3427467A patent/GB1171029A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |