Compressor unloading valve

F - Mech Eng,Light,Heat,Weapons – 01 – C

Patent

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Details

F01C 1/16 (2006.01) F03C 2/00 (2006.01) F04B 49/00 (2006.01) F16K 31/365 (2006.01)

Patent

CA 2598206

A compressor apparatus (20) has a housing (22) having first (53) and second (58) ports along a flow path. One or more working elements (26; 28) cooperate with the housing (22) to define a compression path between suction (60) and discharge (62) locations along the flow path. An unloading valve (100) has a valve element (102) having a range between a first condition and a second condition, the second condition being unloaded relative to the first condition. Means (120, 160) bias the valve element toward a third condition intermediate the first and second conditions.

La présente invention concerne un appareil de compresseur (20) qui comporte un logement (22) présentant des premier (53) et second (58) orifices le long d~une voie d~écoulement. Un ou plusieurs éléments de travail (26 ; 28) coopèrent avec le logement (22) pour définir une voie de compression entre des emplacements d~aspiration (60) et de décharge (62) le long de la voie d~écoulement. Une soupape de décharge (100) comporte un élément de soupape (102) présentant une gamme entre une première condition et une deuxième condition, la deuxième condition étant déchargée par rapport à la première condition. Des moyens (120, 160) sollicitent l~élément de soupape vers une troisième condition intermédiaire entre les première et deuxième conditions.

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