GB1365285A - Meshing screw rotor positivedisplacement machines - Google Patents
Meshing screw rotor positivedisplacement machinesInfo
- Publication number
- GB1365285A GB1365285A GB3452570A GB3452570A GB1365285A GB 1365285 A GB1365285 A GB 1365285A GB 3452570 A GB3452570 A GB 3452570A GB 3452570 A GB3452570 A GB 3452570A GB 1365285 A GB1365285 A GB 1365285A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- valve members
- rotors
- members
- recesses
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C20/00—Control of, monitoring of, or safety arrangements for, machines or engines
- F01C20/10—Control of, monitoring of, or safety arrangements for, machines or engines characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
- F01C20/12—Control of, monitoring of, or safety arrangements for, machines or engines characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves
- F01C20/125—Control of, monitoring of, or safety arrangements for, machines or engines characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves with sliding valves controlled by the use of fluid other than the working fluid
-
- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
- Hydraulic Motors (AREA)
Abstract
1365285 Rotary positive-displacement machines SVENSKA ROTOR MASKINER A B 5 Aug 1971 [16 July 1970] 34525/70 Heading F1F In a two-stage meshing-screw compressor, or expander, working spaces 16, 18 for pairs of male and female rotors (not shown) communicate with inlet and outlet chambers 20, 22 and are inter-connected by a transfer chamber 28, and to vary the capacity axially-sliding valve-members 48, 64 abut the rotors. The valve members are lodged in recesses 50 and carry plates 58 that engage with grooves 54 through which oil is supplied to nozzle openings 62. The recesses are extended by inserts 52 to allow the valve members to enter minimum capacity positions. A flexible member e.g. a chain, 66 on pulleys 68 couples the valve members so that they move in unison, the valve member 48 being displaced against the working fluid-pressure thereon by a servomotor 72. A compression spring 74 biases the valve members to their minimum capacity positions. Gears 36, 38, 40 couple a drive-shaft 42 to the male rotors.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3452570A GB1365285A (en) | 1970-07-16 | 1970-07-16 | Meshing screw rotor positivedisplacement machines |
BE769872A BE769872A (en) | 1970-07-16 | 1971-07-12 | GEAR HELICOIDAL ROTOR MACHINES |
US00162244A US3756753A (en) | 1970-07-16 | 1971-07-13 | Two stage screw rotor machines |
DE2134994A DE2134994C3 (en) | 1970-07-16 | 1971-07-14 | Two-stage parallel and external-axis rotary piston machine for elastic working media |
CA118,349A CA954098A (en) | 1970-07-16 | 1971-07-15 | Two stage screw rotor machines |
JP5306271A JPS5428603B1 (en) | 1970-07-16 | 1971-07-16 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3452570A GB1365285A (en) | 1970-07-16 | 1970-07-16 | Meshing screw rotor positivedisplacement machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1365285A true GB1365285A (en) | 1974-08-29 |
Family
ID=10366730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3452570A Expired GB1365285A (en) | 1970-07-16 | 1970-07-16 | Meshing screw rotor positivedisplacement machines |
Country Status (6)
Country | Link |
---|---|
US (1) | US3756753A (en) |
JP (1) | JPS5428603B1 (en) |
BE (1) | BE769872A (en) |
CA (1) | CA954098A (en) |
DE (1) | DE2134994C3 (en) |
GB (1) | GB1365285A (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE366375B (en) * | 1972-06-30 | 1974-04-22 | Stal Refrigeration Ab | |
US3869227A (en) * | 1974-03-08 | 1975-03-04 | Vilter Manufacturing Corp | Variable capacity rotary screw compressor having variable high pressure suction fluid inlets |
USRE29283E (en) * | 1974-07-26 | 1977-06-28 | Dunham-Bush, Inc. | Undercompression and overcompression free helical screw rotary compressor |
US3936239A (en) * | 1974-07-26 | 1976-02-03 | Dunham-Bush, Inc. | Undercompression and overcompression free helical screw rotary compressor |
US4005949A (en) * | 1974-10-10 | 1977-02-01 | Vilter Manufacturing Corporation | Variable capacity rotary screw compressor |
GB1555330A (en) * | 1978-03-21 | 1979-11-07 | Hall Thermotank Prod Ltd | Rotary fluid machines |
US4610613A (en) * | 1985-06-03 | 1986-09-09 | Vilter Manufacturing Corporation | Control means for gas compressor having dual slide valves |
US4610612A (en) * | 1985-06-03 | 1986-09-09 | Vilter Manufacturing Corporation | Rotary screw gas compressor having dual slide valves |
US6283716B1 (en) | 1997-10-28 | 2001-09-04 | Coltec Industries Inc. | Multistage blowdown valve for a compressor system |
US6422846B1 (en) * | 2001-03-30 | 2002-07-23 | Carrier Corporation | Low pressure unloader mechanism |
US6638029B2 (en) | 2001-12-19 | 2003-10-28 | Hamilton Sunstrand Corporation | Pressure ratio modulation for a two stage oil free compressor assembly |
DE10242139A1 (en) * | 2002-09-03 | 2004-03-18 | Bitzer Kühlmaschinenbau Gmbh | screw compressors |
US8021134B2 (en) * | 2006-10-16 | 2011-09-20 | Carrier Corporation | Compressor slide valve support |
US7891955B2 (en) * | 2007-02-22 | 2011-02-22 | Vilter Manufacturing Llc | Compressor having a dual slide valve assembly |
EP2134924B1 (en) * | 2007-03-29 | 2017-05-03 | Vilter Manufacturing Llc | Compressor having a high pressure slide valve assembly |
WO2009048446A1 (en) * | 2007-10-10 | 2009-04-16 | Carrier Corporation | Slide valve system for a screw compressor |
EP2439411B1 (en) * | 2010-10-06 | 2017-08-23 | LEONARDO S.p.A. | Pump assembly, in particular for helicopter lubrication |
US9920763B2 (en) | 2015-09-17 | 2018-03-20 | Ingersoll-Rand Company | Contact cooled rotary airend injection spray insert |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR804327A (en) * | 1935-03-28 | 1936-10-21 | Milo Ab | Rotary compressor with helical toothing, for variable power |
US2645903A (en) * | 1947-02-20 | 1953-07-21 | Douglas A Elkins | Variable ratio rotary pump and motor hydraulic transmission |
US2749571A (en) * | 1951-06-23 | 1956-06-12 | Pasquetti Carlo | Machine for mixing and extruding |
GB819485A (en) * | 1956-04-12 | 1959-09-02 | Svenska Rotor Maskiner Ab | Improvements in gear devices acting as pumps or motors |
US3088659A (en) * | 1960-06-17 | 1963-05-07 | Svenska Rotor Maskiner Ab | Means for regulating helical rotary piston engines |
NO117317B (en) * | 1964-03-20 | 1969-07-28 | Svenska Rotor Maskiner Ab | |
GB1171291A (en) * | 1965-10-12 | 1969-11-19 | Svenska Rotor Maskiner Ab | Screw Rotor Machines |
-
1970
- 1970-07-16 GB GB3452570A patent/GB1365285A/en not_active Expired
-
1971
- 1971-07-12 BE BE769872A patent/BE769872A/en unknown
- 1971-07-13 US US00162244A patent/US3756753A/en not_active Expired - Lifetime
- 1971-07-14 DE DE2134994A patent/DE2134994C3/en not_active Expired
- 1971-07-15 CA CA118,349A patent/CA954098A/en not_active Expired
- 1971-07-16 JP JP5306271A patent/JPS5428603B1/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
CA954098A (en) | 1974-09-03 |
DE2134994C3 (en) | 1979-12-20 |
DE2134994B2 (en) | 1979-04-26 |
DE2134994A1 (en) | 1972-01-20 |
BE769872A (en) | 1971-11-16 |
JPS5428603B1 (en) | 1979-09-18 |
US3756753A (en) | 1973-09-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |