GB418748A - Improvements in or relating to methods of and apparatus for ventilating enclosures - Google Patents
Improvements in or relating to methods of and apparatus for ventilating enclosuresInfo
- Publication number
- GB418748A GB418748A GB12443/33A GB1244333A GB418748A GB 418748 A GB418748 A GB 418748A GB 12443/33 A GB12443/33 A GB 12443/33A GB 1244333 A GB1244333 A GB 1244333A GB 418748 A GB418748 A GB 418748A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- duct
- fan
- motor
- enclosures
- 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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Catching Or Destruction (AREA)
Abstract
418,748. Controlling ventilation. CARRIER ENGINEERING CO., Ltd., and JONES, J. S., 24, Buckingham Gate, London. April 28, 1933, No. 12443. [Class 137.] A method of ventilating a number of enclosures 1, 2, each having an independent air control 6, 7 consists in employing a main air duct 5 of relatively large cross-section provided with a fan 8, the speed of which is varied according to the pressure in the duct 5, so that the amount of air circulated through any enclosure can be altered without affecting the amount passing through the other enclosures. The variations of pressure to the duct 5 are amplified by a bellows 13, rocker arm 14, leak port 16, and fluid connection 19 to two pressure switches 20, 21 which control a servo-motor 22 and reduction gear 25 rotating brushes 23 on the motor 9 driving the fan 8. Thus on increase of pressure in the duct 5, pressure switch 20 starts rotation of the servo-motor 22 in one direction to vary the fan speed switch 21 operating on reduction of pressure. The switches 20 and 21 operate at slightly different pressures to prevent " hunting " of the fan. The apparatus is applied to the extraction of air containing evaporated solvents from machines, as well as to ventilating rooms.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB12443/33A GB418748A (en) | 1933-04-28 | 1933-04-28 | Improvements in or relating to methods of and apparatus for ventilating enclosures |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB12443/33A GB418748A (en) | 1933-04-28 | 1933-04-28 | Improvements in or relating to methods of and apparatus for ventilating enclosures |
Publications (1)
Publication Number | Publication Date |
---|---|
GB418748A true GB418748A (en) | 1934-10-29 |
Family
ID=10004693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12443/33A Expired GB418748A (en) | 1933-04-28 | 1933-04-28 | Improvements in or relating to methods of and apparatus for ventilating enclosures |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB418748A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2424344A (en) * | 1943-05-27 | 1947-07-22 | Westinghouse Electric Corp | Self-cooled rectifier |
US3691931A (en) * | 1971-01-19 | 1972-09-19 | Luftkonditionering Ab | Device for forced evacuation of air from kitchens |
FR2505940A1 (en) * | 1981-05-18 | 1982-11-19 | Ventilation Indle Miniere | Circulation fan controller for cooking installation - uses pressure gauges to detect vacuum levels in heating ducts and two switch relay controlling supply to fan motor |
US4363236A (en) * | 1980-04-28 | 1982-12-14 | Meyers Harry W | Method and apparatus for detecting leaks in a structure |
GB2165937A (en) * | 1982-06-30 | 1986-04-23 | Kubota Trane Ltd | Fluid flowmeter of the karman vortex detecting type and air conditioning system |
US5860858A (en) * | 1997-12-22 | 1999-01-19 | Wettergren; Ola | Air duct booster fan and control device therefor |
ES2241438A1 (en) * | 2003-06-16 | 2005-10-16 | Portinox, S.A. | Device for extraction of smoke using individual collector bell, has pulsers formed in superior part of main conductor, and unit extractor provided with motor, filters and units for controlling power of elements of unit extractor |
EP1921201A2 (en) * | 2006-11-08 | 2008-05-14 | LG Electronics Inc. | Exhaust structure for clothes dryer in apartment building |
EP1921199A2 (en) * | 2006-11-08 | 2008-05-14 | LG Electronics Inc. | Exhaust structure from dryer in apartment building |
-
1933
- 1933-04-28 GB GB12443/33A patent/GB418748A/en not_active Expired
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2424344A (en) * | 1943-05-27 | 1947-07-22 | Westinghouse Electric Corp | Self-cooled rectifier |
US3691931A (en) * | 1971-01-19 | 1972-09-19 | Luftkonditionering Ab | Device for forced evacuation of air from kitchens |
US4363236A (en) * | 1980-04-28 | 1982-12-14 | Meyers Harry W | Method and apparatus for detecting leaks in a structure |
FR2505940A1 (en) * | 1981-05-18 | 1982-11-19 | Ventilation Indle Miniere | Circulation fan controller for cooking installation - uses pressure gauges to detect vacuum levels in heating ducts and two switch relay controlling supply to fan motor |
GB2165937A (en) * | 1982-06-30 | 1986-04-23 | Kubota Trane Ltd | Fluid flowmeter of the karman vortex detecting type and air conditioning system |
US5860858A (en) * | 1997-12-22 | 1999-01-19 | Wettergren; Ola | Air duct booster fan and control device therefor |
ES2241438A1 (en) * | 2003-06-16 | 2005-10-16 | Portinox, S.A. | Device for extraction of smoke using individual collector bell, has pulsers formed in superior part of main conductor, and unit extractor provided with motor, filters and units for controlling power of elements of unit extractor |
EP1921201A2 (en) * | 2006-11-08 | 2008-05-14 | LG Electronics Inc. | Exhaust structure for clothes dryer in apartment building |
EP1921199A2 (en) * | 2006-11-08 | 2008-05-14 | LG Electronics Inc. | Exhaust structure from dryer in apartment building |
EP1921199A3 (en) * | 2006-11-08 | 2010-07-14 | LG Electronics Inc. | Exhaust structure from dryer in apartment building |
EP1921201A3 (en) * | 2006-11-08 | 2010-07-21 | LG Electronics Inc. | Exhaust structure for clothes dryer in apartment building |
US8024871B2 (en) | 2006-11-08 | 2011-09-27 | Lg Electronics Inc. | Exhaust structure for clothes dryer in apartment building |
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