GB1464996A - Optimized point of injection of liquid refrigerant in a helical screw rotary compressor for refrigeration use - Google Patents
Optimized point of injection of liquid refrigerant in a helical screw rotary compressor for refrigeration useInfo
- Publication number
- GB1464996A GB1464996A GB2523174A GB2523174A GB1464996A GB 1464996 A GB1464996 A GB 1464996A GB 2523174 A GB2523174 A GB 2523174A GB 2523174 A GB2523174 A GB 2523174A GB 1464996 A GB1464996 A GB 1464996A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid refrigerant
- injection
- rotary compressor
- port
- helical screw
- 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
- 239000003507 refrigerant Substances 0.000 title abstract 4
- 239000007788 liquid Substances 0.000 title abstract 3
- 238000002347 injection Methods 0.000 title 1
- 239000007924 injection Substances 0.000 title 1
- 238000005057 refrigeration Methods 0.000 title 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
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
- F04C28/12—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 sliding valves
- F04C28/125—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 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
- F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
- F25B1/047—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type of screw type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary-Type Compressors (AREA)
Abstract
1464996 Rotary positive-displacement fluidmachines DUNHAM-BUSH INC 6 June 1974 [14 Jan 1974] 25231/74 Heading F1F In a refrigerant compressor of the meshing- screw type liquid refrigerant from the condenser C is injected (for cooling and sealing purposes) through a port P in the high-pressure portion of one of the bores accommodating the male and female rotors 20, 21, said port being located at a helical angle from the low-pressure end of the rotor in said bore such that liquid refrigerant flows continuously through the port while the compressor is operating. A slide-valve 46 may be provided to regulate the output.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US433418A US3885402A (en) | 1974-01-14 | 1974-01-14 | Optimized point of injection of liquid refrigerant in a helical screw rotary compressor for refrigeration use |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1464996A true GB1464996A (en) | 1977-02-16 |
Family
ID=23720073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2523174A Expired GB1464996A (en) | 1974-01-14 | 1974-06-06 | Optimized point of injection of liquid refrigerant in a helical screw rotary compressor for refrigeration use |
Country Status (10)
Country | Link |
---|---|
US (1) | US3885402A (en) |
JP (1) | JPS50102909A (en) |
BR (1) | BR7407762D0 (en) |
CA (1) | CA1001432A (en) |
DE (1) | DE2434873A1 (en) |
FR (1) | FR2257880B3 (en) |
GB (1) | GB1464996A (en) |
IT (1) | IT1014495B (en) |
SE (1) | SE404952B (en) |
ZA (1) | ZA743672B (en) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CS189674B2 (en) * | 1973-11-19 | 1979-04-30 | Hall Thermotank Prod Ltd | Method of and apparatus for compressing gas or steam and for lubricating the compressing machine |
GB1548663A (en) * | 1975-06-24 | 1979-07-18 | Maekawa Seisakusho Kk | Refrigerating apparatus |
JPS5494149A (en) * | 1978-01-06 | 1979-07-25 | Hitachi Ltd | Freezer |
JPS54163416A (en) * | 1978-06-14 | 1979-12-26 | Hitachi Ltd | Screw compressor |
US4375156A (en) * | 1980-10-03 | 1983-03-01 | Dunham-Bush, Inc. | Closed loop compressed gas system with oil mist lubricated screw compressor |
US4515540A (en) * | 1983-11-22 | 1985-05-07 | Frick Company | Variable liquid refrigerant injection port locator for screw compressor equipped with automatic variable volume ratio |
US4553911A (en) * | 1983-11-22 | 1985-11-19 | Frick Company | Method of coding the oil in screw compressors equipped with automatic variable volume ratio |
FR2618494A1 (en) * | 1987-07-21 | 1989-01-27 | Zimmern Bernard | HERMETIC REFRIGERATION COMPRESSOR WITH ECONOMIZER |
US4974427A (en) * | 1989-10-17 | 1990-12-04 | Copeland Corporation | Compressor system with demand cooling |
JPWO2007000815A1 (en) * | 2005-06-29 | 2009-01-22 | 株式会社前川製作所 | Lubricating method for two-stage screw compressor, device and operating method for refrigerating device |
WO2007106090A1 (en) * | 2006-03-13 | 2007-09-20 | Carrier Corporation | Slide valve with hot gas bypass port |
US20070251256A1 (en) * | 2006-03-20 | 2007-11-01 | Pham Hung M | Flash tank design and control for heat pumps |
US7647790B2 (en) * | 2006-10-02 | 2010-01-19 | Emerson Climate Technologies, Inc. | Injection system and method for refrigeration system compressor |
US8181478B2 (en) * | 2006-10-02 | 2012-05-22 | Emerson Climate Technologies, Inc. | Refrigeration system |
US8769982B2 (en) * | 2006-10-02 | 2014-07-08 | Emerson Climate Technologies, Inc. | Injection system and method for refrigeration system compressor |
US8096288B2 (en) * | 2008-10-07 | 2012-01-17 | Eaton Corporation | High efficiency supercharger outlet |
US8539785B2 (en) | 2009-02-18 | 2013-09-24 | Emerson Climate Technologies, Inc. | Condensing unit having fluid injection |
DE102012013267A1 (en) | 2012-07-04 | 2014-01-09 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Substrate device, preservative device and method for cryopreserving a biological sample |
GB2533621B (en) * | 2014-12-23 | 2019-04-17 | Edwards Ltd | Rotary screw vacuum pumps |
ES2813078T3 (en) * | 2016-12-15 | 2021-03-22 | Carrier Corp | Magnetic Geared Screw Compressor |
US10856464B2 (en) * | 2017-08-01 | 2020-12-08 | Capstan Ag Systems, Inc. | Systems and methods for suppressing vaporization of volatile fluids in agricultural fluid application systems |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3073514A (en) * | 1956-11-14 | 1963-01-15 | Svenska Rotor Maskiner Ab | Rotary compressors |
US3210958A (en) * | 1964-09-10 | 1965-10-12 | Gen Electric | Heat pump comprising rotary compressor including injection cooling arrangement |
GB1171291A (en) * | 1965-10-12 | 1969-11-19 | Svenska Rotor Maskiner Ab | Screw Rotor Machines |
US3795117A (en) * | 1972-09-01 | 1974-03-05 | Dunham Bush Inc | Injection cooling of screw compressors |
-
1974
- 1974-01-14 US US433418A patent/US3885402A/en not_active Expired - Lifetime
- 1974-06-04 CA CA201,635A patent/CA1001432A/en not_active Expired
- 1974-06-06 SE SE7407434A patent/SE404952B/en unknown
- 1974-06-06 GB GB2523174A patent/GB1464996A/en not_active Expired
- 1974-06-10 ZA ZA00743672A patent/ZA743672B/en unknown
- 1974-06-28 FR FR7422738A patent/FR2257880B3/fr not_active Expired
- 1974-07-09 IT IT69180/74A patent/IT1014495B/en active
- 1974-07-13 JP JP49079773A patent/JPS50102909A/ja active Pending
- 1974-07-19 DE DE2434873A patent/DE2434873A1/en not_active Withdrawn
- 1974-09-18 BR BR7762/74A patent/BR7407762D0/en unknown
Also Published As
Publication number | Publication date |
---|---|
ZA743672B (en) | 1975-06-25 |
IT1014495B (en) | 1977-04-20 |
CA1001432A (en) | 1976-12-14 |
SE404952B (en) | 1978-11-06 |
SE7407434L (en) | 1975-07-15 |
DE2434873A1 (en) | 1975-07-17 |
FR2257880B3 (en) | 1977-05-06 |
JPS50102909A (en) | 1975-08-14 |
AU6996074A (en) | 1975-12-11 |
US3885402A (en) | 1975-05-27 |
FR2257880A1 (en) | 1975-08-08 |
BR7407762D0 (en) | 1975-09-16 |
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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 |