Maximum operating pressure control for systems with float...

F - Mech Eng,Light,Heat,Weapons – 25 – B

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F25B 1/00 (2006.01) F25B 41/00 (2006.01) F25B 49/00 (2006.01) F25D 17/02 (2006.01)

Patent

CA 2604138

A chiller system (10) includes a compressor (12), a condenser (14), a cooler (20), a bubbler tube (22) and a float valve (18) within the condenser (14). A solenoid valve (26) is disposed within the bubbler tube (22) and is adapted to selectively open and close the float valve (18) such that a refrigerant flow to the cooler (20) is throttled. The throttled refrigerant flow results in a reduction in system pressure which further results in a higher viscosity oil delivery to the compressor (12) by an oil management system (30).

La présente invention concerne un système refroidisseur (10) qui comprend un compresseur (12), un condenseur (14), un élément de refroidissement (20), un barboteur (22) et un régleur à flotteur (18) à l~intérieur du condenseur (14). Une vanne électromagnétique (26) est disposée à l'intérieur du barboteur (22) et est conçue pour ouvrir et fermer de manière sélective le régleur à flotteur (18) de telle sorte qu~un flux de réfrigérant vers le refroidisseur (20) est régulé par étranglement. Le flux régulé de réfrigérant entraîne une réduction de la pression du système qui a en outre pour résultat une libération d~une huile à viscosité plus grande vers le compresseur (12) par un système de gestion de l~huile (30).

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