F - Mech Eng,Light,Heat,Weapons – 04 – C
Patent
F - Mech Eng,Light,Heat,Weapons
04
C
F04C 3/02 (2006.01) F04B 23/00 (2006.01) F04B 49/00 (2006.01) F04C 11/00 (2006.01) F04C 18/16 (2006.01)
Patent
CA 2131181
A variable capacity rotary screw compressor (10) having a rotor housing (12) including a bore (14, 16), an inlet (19), an outlet (21), a slide valve recess (25, 25A) and rotors (22, 24). Passive and active slide valves (34, 61) are mounted in the recess. Individual passive and active slide valve balancing units (38, 63) are connected to the passive and active slide valves respectively. A prime mover (79) is connected to selectively regulate the position of the active slide valve. A first conduit (40) is connected between the housing inlet and the passive and active slide valve balancing units and includes a first valve operable to either open or close the first conduit. A second conduit (80) is connected in fluid communication between the outlet and the passive and active slide valve balancing units and includes a second valve operable to either open or close the second conduit.
Compresseur à vis rotative à capacité variable (10) ayant un carter de rotor (12) comprenant un alésage (14, 16), une entrée (19), une sortie (21), un logement de soupapes à tiroir (25, 25A) et des rotors (22, 24). Des soupapes à tiroir passive et active (34, 61) sont montées dans le logement. Des appareils individuels d'équilibrage des soupapes (38, 63) sont raccordés aux soupapes à tiroir passive et active respectivement. Un moteur primaire (79) est raccordé pour commander sélectivement la position de la soupape à tiroir active. Un premier conduit (40) relie l'entrée du carter aux appareils d'équilibrage des soupapes à tiroir passive et active et comprend une première soupape permettant d'ouvrir ou de fermer le premier conduit. Un deuxième conduit (80) assure la communication fluide entre la sortie et les appareils d'équilibrage des soupapes à tiroir passive et active et comprend une deuxième soupape permettant d'ouvrir ou de fermer le deuxième conduit.
Ridout & Maybee Llp
Vilter Manufacturing Corporation
LandOfFree
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