GB641304A - Improvements in or relating to compressors of the rotary screw wheel type - Google Patents
Improvements in or relating to compressors of the rotary screw wheel typeInfo
- Publication number
- GB641304A GB641304A GB5756/48A GB575648A GB641304A GB 641304 A GB641304 A GB 641304A GB 5756/48 A GB5756/48 A GB 5756/48A GB 575648 A GB575648 A GB 575648A GB 641304 A GB641304 A GB 641304A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valves
- compressor
- valve
- pressure
- delivery
- 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
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/10—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
- F04C28/16—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using lift valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
- F04C28/26—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
641,304. Rotary compressors. MARBLE, J. C. Feb. 26, 1948, No. 5756. Convention date, Aug. 21, 1943. [Class 110(ii)] In a meshing screw compressor valve means 38, 40 are provided to limit the pressure differential between the delivery end of the rotor chamber and the receiving chamber 16. When the pressure in the latter is reduced, e.g. when supplying air to an aircraft engine at high altitude, the valves lift against their light springs 42, 44 so that the compressor delivers air at a lower pressure. The compressor comprises a casing 10 containing male and female rotors 18, 20, an end wall 14 for closing the working spaces of the compressor. the wall being cut away to provide an outlet port a ... h. The inlet port may be combined radialaxial, or entirely axial, of known design. The valves may be placed in various positions. Fig. 3 shows a compressor with an inlet 70 and delivery 56, and control valves 50, 60, 62, placed as shown and communicating with the delivery. Before a groove 24 has passed out of registry with the valve 50 it comes into registry with valve 60 and differential pressure will act to continue to limit the pressure which can be built up in the groove. To secure a quantity control, a byepass valve 64, coupled to the inlet throttle valve 72, is opened. Other relief valves may be arranged in the casing wall which may lead to the atmosphere. The valves may be actuated by servomotor or other controls.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US641304XA | 1943-08-21 | 1943-08-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB641304A true GB641304A (en) | 1950-08-09 |
Family
ID=22053759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5756/48A Expired GB641304A (en) | 1943-08-21 | 1948-02-26 | Improvements in or relating to compressors of the rotary screw wheel type |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB641304A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1293389B (en) * | 1960-06-03 | 1969-04-24 | Svenska Rotor Maskiner Ab | Device for controlling a screw compressor |
| DE1293387B (en) * | 1959-06-04 | 1969-04-24 | Svenska Rotor Maskiner Ab | Control device on a screw rotor machine suitable for compression or expansion of a conveyor or working medium |
| WO1994018456A1 (en) * | 1993-02-01 | 1994-08-18 | Fleming Thermodynamics Ltd. | Control system for screw type supercharging apparatus |
-
1948
- 1948-02-26 GB GB5756/48A patent/GB641304A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1293387B (en) * | 1959-06-04 | 1969-04-24 | Svenska Rotor Maskiner Ab | Control device on a screw rotor machine suitable for compression or expansion of a conveyor or working medium |
| DE1293389B (en) * | 1960-06-03 | 1969-04-24 | Svenska Rotor Maskiner Ab | Device for controlling a screw compressor |
| WO1994018456A1 (en) * | 1993-02-01 | 1994-08-18 | Fleming Thermodynamics Ltd. | Control system for screw type supercharging apparatus |
| US5791315A (en) * | 1993-02-01 | 1998-08-11 | Sprintex Australasia Pty Ltd. | Control system for screw type supercharging apparatus |
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