Lubrication – Systems – Rotary compressor
Reexamination Certificate
2007-02-02
2008-03-25
Fenstermacher, David M. (Department: 3682)
Lubrication
Systems
Rotary compressor
C184S006210, C184S006230, C184S006240
Reexamination Certificate
active
07347301
ABSTRACT:
An oil refrigeration screw compressor being applied to a refrigeration system etc., in which the problem of strength reduction of a bearing material under high temperatures and that of lifetime reduction of the bearing material due to viscosity lowering of lubricant are solved. A lubricant supply system to a compressor body is divided into a bearing oil supply system for supplying lubricant to each bearing of the compressor body at low pressure and into a temperature control oil supply system for supplying lubricant into the compressor body at high pressure. The bearing oil supply system is a closed circuit oil supply system comprising an oil supply tank, an oil cooler, and an oil supply pump, and the temperature control oil supply system is a closed circuit oil supply system comprising an oil separator and an oil cooler.
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Relevant Portion of International Search Report issued in corresponding International Application No. PCT/ JP2004/011412 (from which this Present Application claims domestic priority), with mailing date Dec. 7, 2004.
Fukano Shuji
Kubota Yoshifusa
Nakai Hironori
Sekiya Yoshimitsu
Shozu Teiji
Fenstermacher David M.
Mayekawa Mfg. Co., Ltd.
Rossi Kimms & McDowell LLP
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