GB599189A - Improvements in or relating to control devices or valves for vacuum systems, and vacuum control systems for vacuum operated airplane instruments - Google Patents
Improvements in or relating to control devices or valves for vacuum systems, and vacuum control systems for vacuum operated airplane instrumentsInfo
- Publication number
- GB599189A GB599189A GB21642/43A GB2164243A GB599189A GB 599189 A GB599189 A GB 599189A GB 21642/43 A GB21642/43 A GB 21642/43A GB 2164243 A GB2164243 A GB 2164243A GB 599189 A GB599189 A GB 599189A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vacuum
- pressure
- valve
- connection
- cabin
- 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
- 241000239290 Araneae Species 0.000 abstract 1
- 230000002411 adverse Effects 0.000 abstract 1
- 230000007423 decrease Effects 0.000 abstract 1
- 239000004744 fabric Substances 0.000 abstract 1
- 229920001084 poly(chloroprene) Polymers 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
- B64D13/02—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being pressurised
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
- B64D13/02—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being pressurised
- B64D13/04—Automatic control of pressure
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
- G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
- G05D16/0644—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator
- G05D16/0655—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using one spring-loaded membrane
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
599,189. Regulating air compressors. PESCO PRODUCTS CO. Dec. 24,1943, No. 21642. Convention date, Dec. 12, 1942. [Class 8 (i)] [Also in Group XXIX] A control device 16 for vacuum systems, especially those used to operate aircraft instruments comprises a valve 44 which is normally closed to cut off the system from a source of outside pressure and pressure responsive means such as the diaphragm 54 subject to a second source of pressure, such as aircraft cabin pressure, for unseating the valve, and admitting outside pressure to the system. As shown in Figs. 1 and 2, the device 16 comprises a cylindrical housing 30 with a connection 22 to a vacuum pump 20, a second connection 18 to a vacuum-operated instrument within the air. craft cabin 12, a third connection 28 to atmosphere through a filter 26 and a fourth connection 24 to the pressure in the cabin 12. The base of the housing 30 is closed by a base 34 having an integral spindle guide 38. The guide 38 has a bearing bush 42 and is provided with a vent hole 41. The valve disc 44 is normally forced to its seating 68 by a spring 70. The valve has an integral spindle 39 clamped at its upper end to a diaphragm 54 of rubberised fabric or neoprene clamped at its periphery to the housing 30 by a cover 35. Ports 50 in a spider 60 place the diaphragm in communioation with the atmospheric connection 28. In operation, the valve 44 remains seated until the vacuum in the system exceeds a predetermined amount when it opens to restore the vacuum to normal. As the aircraft ascends, the atmospheric pressure decreases whilst the pressure in the cabin is maintained by a supercharger so that the pressure on the diaphragm opens the valve 44 and relieves the load on the pump 20. At high altitudes, say 40,000 ft., with the valve 44 fully open and the pump 20 completely unloaded, the vacuum created in the system may exceed the predetermined amount and adversely affect the instrument. To prevent this, a second valve may be inserted in the connection 18 to admit some of the pressure from the cabin when the vacuum exceeds the predetermined amount.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US599189XA | 1942-12-12 | 1942-12-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB599189A true GB599189A (en) | 1948-03-08 |
Family
ID=22026128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21642/43A Expired GB599189A (en) | 1942-12-12 | 1943-12-24 | Improvements in or relating to control devices or valves for vacuum systems, and vacuum control systems for vacuum operated airplane instruments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB599189A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2521683A1 (en) * | 1982-02-17 | 1983-08-19 | Debreceni Mezoegazdasagi | FLOW CONTROL VALVE FOR LIQUIDS |
| GB2396903A (en) * | 2002-11-12 | 2004-07-07 | Dunlop Aerospace Ltd | Valve operable in response to pressure difference between inlets |
| CN112901816A (en) * | 2021-01-08 | 2021-06-04 | 安徽建筑大学 | Airborne diaphragm type valve structure |
-
1943
- 1943-12-24 GB GB21642/43A patent/GB599189A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2521683A1 (en) * | 1982-02-17 | 1983-08-19 | Debreceni Mezoegazdasagi | FLOW CONTROL VALVE FOR LIQUIDS |
| GB2396903A (en) * | 2002-11-12 | 2004-07-07 | Dunlop Aerospace Ltd | Valve operable in response to pressure difference between inlets |
| GB2396903B (en) * | 2002-11-12 | 2006-09-20 | Dunlop Aerospace Ltd | Valve |
| CN112901816A (en) * | 2021-01-08 | 2021-06-04 | 安徽建筑大学 | Airborne diaphragm type valve structure |
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