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1. (WO1997016648) IMPROVEMENTS IN AND RELATING TO SINGLE SCREW COMPRESSORS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/016648 International Application No.: PCT/GB1996/002678
Publication Date: 09.05.1997 International Filing Date: 01.11.1996
Chapter 2 Demand Filed: 30.05.1997
IPC:
F04B 41/06 (2006.01) ,F04C 23/00 (2006.01) ,F25B 1/10 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
41
Pumping installations or systems specially adapted for elastic fluids
06
Combinations of two or more pumps
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
C
ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
23
Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25
REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
B
REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
1
Compression machines, plant or systems with non-reversible cycle
10
with multi-stage compression
Applicants:
AAF-McQUAY INCORPORATED [US/US]; Legg Mason Tower Suite 2800 111 S. Calvert Street Baltimore, MD 21202, US (AllExceptUS)
YOUNG, Terence, William, Thomas [GB/GB]; GB (UsOnly)
ROLL, John, Michael [GB/GB]; GB (UsOnly)
Inventors:
YOUNG, Terence, William, Thomas; GB
ROLL, John, Michael; GB
Agent:
NEWBY, John, Ross; J.Y. & G.W. Johnson Kingsbourne House 229-231 High Holborn London WC1V 7DP, GB
Priority Data:
9522516.502.11.1995GB
9522517.302.11.1995GB
PCT/GB96/0267701.11.1996KE
Title (EN) IMPROVEMENTS IN AND RELATING TO SINGLE SCREW COMPRESSORS
(FR) AMELIORATIONS APPORTEES A DES COMPRESSEURS A UNE SEULE VIS
Abstract:
(EN) A single screw compressor having at least two pumping chambers (10A, 10B) of variable volume formed in the flutes of a screw, each of which receives fluid to be compressed from a primary inlet (14:34) when the respective pumping chamber has a first volume at least close to its maximum volume and each of which discharges compressed fluid from an outlet (13a, 13b) when the respective pumping chamber has a second volume which is less than said first volume, one of said pumping chambers (10B) having a secondary inlet (12b, 36) open to the said one chamber (10B) when it has a third volume intermediate the first and second volumes after said one chamber (10B) is closed off from its primary inlet but before the said one chamber (10B) opens to its outlet, is characterised in that means (38a, 38b: 40) is provided on the compressor to connect the outlet of the other pumping chamber (10A) to the secondary inlet (12b, 36) of said one pumping chamber (10B).
(FR) Compresseur à une seule vis possédant au moins deux chambres de pompage (10A, 10B) de volume variable formées dans les cannelures d'une vis. Chacune d'elles reçoit d'une admission principale (14; 34) un fluide devant être comprimé lorsque la chambre de pompage respective renferme un premier volume au moins proche de son volume maximum, et chacune d'elles évacue le fluide comprimé par une orifice d'évacuation (13a, 13b) lorsque la chambre de pompage respective renferme un deuxième volume inférieur au premier. L'une des chambres de pompage (10B) comporte une admission secondaire (12b, 36) introduisant le fluide dans ladite chambre (10B) lorsque celle-ci renferme un troisième volume compris entre les premier et deuxième volumes après fermeture de l'admission principale de cette chambre (10B) et avant ouverture de son orifice d'évacuation. Ce compresseur se caractérise en ce qu'il comporte un dispositif (38a, 38b; 40) permettant le raccordement de l'orifice d'évacuation de l'autre chambre de pompage (10A) avec l'admission secondaire (12b, 36) de la première chambre de pompage (10B).
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, US, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
AU1996073225