GB724076A - Improvements in or relating to pressure ratio control devices more particularly for aircraft air conditioning systems - Google Patents
Improvements in or relating to pressure ratio control devices more particularly for aircraft air conditioning systemsInfo
- Publication number
- GB724076A GB724076A GB4958/50A GB495850A GB724076A GB 724076 A GB724076 A GB 724076A GB 4958/50 A GB4958/50 A GB 4958/50A GB 495850 A GB495850 A GB 495850A GB 724076 A GB724076 A GB 724076A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bellows
- nut
- head
- spring
- inlet
- 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
- 238000004378 air conditioning Methods 0.000 title 1
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 239000002826 coolant Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 239000012530 fluid Substances 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
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
724,076. Elastic-fluid turbines. GARRETT CORPORATION. Feb. 27, 1950 [May 3, 1949], No. 4958/50. Class 110 (3). [Also in Groups X, XIII and XXIX] A regulating valve 15, Fig. 1, in the inlet 14 of the turbine 11 is regulated by means 18 responsive to the ratio of the pressures at the inlet and outlet of the engine and operative to control the ratio of these pressures. The cooling turbine 11 supplies an aircraft cabin or other enclosure 10 with cooled air and drives a fan 19 drawing coolant air through a heat exchanger 12. The valve 15, which may be of the butterfly type, is biased by a spring to the open position and closed by pneumatic pressure on a bellows 61 arranged in a casing 60. The means 18 comprises a housing 23, Fig. 2, with chambers B, C separated by a diaphragm 26 and connected by pipes 22, 21 with the cabin 10 and the inlet pipe 14 respectively. The chamber C communicates through an axial aperture 29 with a larger chamber containing an evacuated bellows 40 loaded internally by a spring 43. The head 41 of the bellows is adjustably connected to a screwed spindle 30 to the head of which the diaphragm 26 is clamped. The base 42 of the bellows is secured to an adjusting screw 44 mounted in a nut 45 and also carrying a lock nut 46. The nut 45 is held by a locking cap 49 secured by screws 51. The head 41 of the bellows is adapted to open a spring-loaded needle valve 32 supplying the bellows casing 60 through a connection 34 and a pipe 17. The housing 23 has similar connections 35, 36 for the pipes 21, 22 respectively. If the nut 45 is held stationary and the screw 44 is rotated, the position of the diaphragm 26 relative to the head of the bellows is adjusted and this affects primarily the slope of the curve formed by plotting the inlet pressure against the outlet or cabin pressure. The spring load on the bellows is adjusted by rotating the nut 45 and holding the screw 44 stationary. The latter adjustment primarily affects the position of the curve referred to above. By means of the two adjustments, the pressure ratio may be maintained constant or arranged to decrease slightly as the aircraft ascends.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US724076XA | 1949-05-03 | 1949-05-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB724076A true GB724076A (en) | 1955-02-16 |
Family
ID=22107352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4958/50A Expired GB724076A (en) | 1949-05-03 | 1950-02-27 | Improvements in or relating to pressure ratio control devices more particularly for aircraft air conditioning systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB724076A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536619A (en) * | 2012-01-06 | 2012-07-04 | 天津电气传动设计研究所 | Pressure regulating valve of water turbine volute casing |
-
1950
- 1950-02-27 GB GB4958/50A patent/GB724076A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536619A (en) * | 2012-01-06 | 2012-07-04 | 天津电气传动设计研究所 | Pressure regulating valve of water turbine volute casing |
| CN102536619B (en) * | 2012-01-06 | 2014-01-29 | 天津电气传动设计研究所 | Pressure regulating valve of water turbine volute casing |
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