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1. (WO1987003651) INTERMITTENT SERVICE SCREW COMPRESSOR
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1987/003651 International Application No.: PCT/SE1986/000557
Publication Date: 18.06.1987 International Filing Date: 08.12.1986
IPC:
F04B 49/02 (2006.01) ,F04C 18/16 (2006.01) ,F04C 29/00 (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
49
Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups F04B1/-F04B47/196
02
Stopping, starting, unloading, or idling control
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
18
Rotary-piston pumps specially adapted for elastic fluids
08
of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
12
of other than internal-axis type
14
with toothed rotary pistons
16
with helical teeth, e.g. chevron-shaped, screw type
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
29
Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups F04C18/-F04C28/193
Applicants:
SVENSKA ROTOR MASKINER AB [SE/SE]; P.O. Box 15085 S-104 65 Stockholm, SE (AllExceptUS)
OSCARSSON, Johnny [SE/SE]; SE (UsOnly)
Inventors:
OSCARSSON, Johnny; SE
Agent:
WALDINGER, A^oke; P.O. Box 15085 S-104 65 Stockholm, SE
Priority Data:
8505821-210.12.1985SE
Title (EN) INTERMITTENT SERVICE SCREW COMPRESSOR
(FR) COMPRESSEUR A VIS A FONCTIONNEMENT INTERMITTENT
Abstract:
(EN) A screw compressor for intermittent operation, preferably for supplying the pneumatic brake system of an automotive vehicle with compressed air. This is normally effected by activating and de-activating a coupling incorporated in the compressor drive means. Alternatively the compressor may be driven by a separate motor which can be started and stopped. The invention provides a simpler and less space consuming solution, by incorporating in the high-pressure end wall (4) of the compressor a wall plate (14) which seals against the casing wall (2) of the compressor and which can be withdrawn axially of the compressor out of sealing engagement with the casing wall and into a space (16) which is positioned in the high-pressure end wall and communicates with the compressor inlet (12), thereby to fully unload the compressor.
(FR) Un compresseur à vis à fonctionnement intermittent sert de préférence à fournir de l'air comprimé au système de freinage à air comprimé d'un véhicule automobile. Normalement, cet effet est obtenu en activant et en désactivant un couplage incorporé dans le dispositif de commande du compresseur. Le compresseur peut également être entraîné par un moteur séparé qui peut être mis en marche et arrêté. La solution proposée par l'invention est plus simple et plus compacte. Dans la paroi terminale à haute pression (4) du compresseur est incorporée une contre-plaque (14) qui rend étanche la paroi du carter (2) du compresseur et qui peut être retirée axialement du compresseur, hors de l'engagement d'étanchéité avec la paroi du carter, et placée dans un espace (16) situé dans la paroi extrême de haute pression et en communication avec l'orifice d'admission (12) du compresseur, de manière à décharger complètement le compresseur.
Designated States: JP, KR, US
European Patent Office (AT, BE, CH, DE, FR, GB, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: Swedish (SV)
Also published as:
EP0248839US4799865JP7092064