EP2423508A3 - capacity control for a screw compressor - Google Patents

capacity control for a screw compressor Download PDF

Info

Publication number
EP2423508A3
EP2423508A3 EP11177400.6A EP11177400A EP2423508A3 EP 2423508 A3 EP2423508 A3 EP 2423508A3 EP 11177400 A EP11177400 A EP 11177400A EP 2423508 A3 EP2423508 A3 EP 2423508A3
Authority
EP
European Patent Office
Prior art keywords
discharge
valve disc
face
screw compressor
compression operation
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.)
Granted
Application number
EP11177400.6A
Other languages
German (de)
French (fr)
Other versions
EP2423508B1 (en
EP2423508A2 (en
Inventor
Ryuichiro Yonemoto
Eisuke Kato
Masayuki Urashin
Shinichiro Yamada
Masanori Agekura
Yoshikazu Ishiki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Johnson Controls Air Conditioning Inc
Original Assignee
Hitachi Appliances Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Appliances Inc filed Critical Hitachi Appliances Inc
Publication of EP2423508A2 publication Critical patent/EP2423508A2/en
Publication of EP2423508A3 publication Critical patent/EP2423508A3/en
Application granted granted Critical
Publication of EP2423508B1 publication Critical patent/EP2423508B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • 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
    • 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
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/18—Pressure
    • F04C2270/185—Controlled or regulated

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

A screw compressor having a discharge casing (16). The discharge casing (16) includes a discharge side end face that abuts on an end face of a main casing (15) to cover the opening of a bore (20), a discharge port (23A, 23B; 25A, 25B) that is formed on the discharge side end face, a discharge chamber (26) that discharges a compressed gas from a compression operation chamber (36A, 36B) through the discharge port (23A, 23B; 25A, 25B), a valve hole (28) that is disposed near the discharge port (23A, 23B; 25A, 25B) on the female rotor side of the discharge side end face and open at a position opposite the direction of female rotor rotation, a bypass groove (29) that permits the valve hole (28) to communicate with a discharge flow path, and a valve disc (31) that is disposed in the valve hole (28). The screw compressor also includes a valve disc drive device (30) that opens and closes the valve disc (31), and a control device (112) that detects whether the compression operation chamber (36A, 36B) is over-compressed, and if the compression operation chamber (36A, 36B) is over-compressed, controls the valve disc drive device (30) so as to open the valve disc (31).
EP11177400.6A 2010-08-30 2011-08-12 capacity control for a screw compressor Active EP2423508B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010192546A JP5389755B2 (en) 2010-08-30 2010-08-30 Screw compressor

Publications (3)

Publication Number Publication Date
EP2423508A2 EP2423508A2 (en) 2012-02-29
EP2423508A3 true EP2423508A3 (en) 2016-05-18
EP2423508B1 EP2423508B1 (en) 2017-05-31

Family

ID=44763804

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11177400.6A Active EP2423508B1 (en) 2010-08-30 2011-08-12 capacity control for a screw compressor

Country Status (5)

Country Link
EP (1) EP2423508B1 (en)
JP (1) JP5389755B2 (en)
CN (1) CN102384087B (en)
ES (1) ES2638569T3 (en)
TW (1) TWI494508B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5863609B2 (en) * 2012-09-24 2016-02-16 日立アプライアンス株式会社 Screw compressor and chiller unit including the same
JP5951125B2 (en) * 2013-05-30 2016-07-13 三菱電機株式会社 Screw compressor and refrigeration cycle apparatus
US10487833B2 (en) 2013-12-18 2019-11-26 Carrier Corporation Method of improving compressor bearing reliability
TWI632298B (en) * 2016-04-19 2018-08-11 日商日立產機系統股份有限公司 Oil-cooled screw compressor
WO2019111661A1 (en) 2017-12-08 2019-06-13 株式会社日立産機システム Liquid-feeding screw compressor
US11162705B2 (en) 2019-08-29 2021-11-02 Hitachi-Johnson Controls Air Conditioning, Inc Refrigeration cycle control

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6287687A (en) * 1985-10-11 1987-04-22 Kobe Steel Ltd Control method for screw compressor
WO1989010489A1 (en) * 1988-04-25 1989-11-02 Svenska Rotor Maskiner Ab Lift valve in a rotary screw machine
EP2031249A2 (en) * 2007-08-30 2009-03-04 Hitachi Appliances, Inc. Capacity control device for screw compressor
WO2010035592A1 (en) * 2008-09-26 2010-04-01 日立アプライアンス株式会社 Screw compressor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3434694A1 (en) 1984-09-21 1986-04-10 Bitzer Kühlmaschinenbau GmbH & Co KG, 7032 Sindelfingen SCREW COMPRESSOR FOR GASEOUS MEDIA
US5509273A (en) * 1995-02-24 1996-04-23 American Standard Inc. Gas actuated slide valve in a screw compressor
JP5543746B2 (en) * 2009-09-10 2014-07-09 株式会社前川製作所 Overcompression prevention device for screw compressor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6287687A (en) * 1985-10-11 1987-04-22 Kobe Steel Ltd Control method for screw compressor
WO1989010489A1 (en) * 1988-04-25 1989-11-02 Svenska Rotor Maskiner Ab Lift valve in a rotary screw machine
EP2031249A2 (en) * 2007-08-30 2009-03-04 Hitachi Appliances, Inc. Capacity control device for screw compressor
WO2010035592A1 (en) * 2008-09-26 2010-04-01 日立アプライアンス株式会社 Screw compressor

Also Published As

Publication number Publication date
JP2012047157A (en) 2012-03-08
JP5389755B2 (en) 2014-01-15
EP2423508B1 (en) 2017-05-31
EP2423508A2 (en) 2012-02-29
ES2638569T3 (en) 2017-10-23
TW201217650A (en) 2012-05-01
TWI494508B (en) 2015-08-01
CN102384087B (en) 2014-12-10
CN102384087A (en) 2012-03-21

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