The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 14, 2018
Filed:
May. 22, 2012
Masaki Koyama, Tokyo, JP;
Keiji Sasao, Tokyo, JP;
Masaki Koyama, Tokyo, JP;
Keiji Sasao, Tokyo, JP;
Hitachi-Johnston Controls Air Conditioning, Inc., Tokyo, JP;
Abstract
A refrigerant compressor () includes: a sealed vessel (); a compression mechanism () that sucks refrigerant, sucked in the sealed vessel (), for compression; a motor () that drives the compression mechanism (); a suction pipe () for sucking the refrigerant into the sealed vessel () when sucking the refrigerant; a cover () arranged to face an outlet of the suction pipe (), to force the refrigerant sucked through the suction pipe () to collide against the cover for gas-liquid separation, and to allow liquid refrigerant from the separation to drop on a coil () of the motor (); and a suction passage () that introduces gas refrigerant from the gas-liquid separation, for which the refrigerant sucked through the suction pipe is forced to collide against the cover (), to an inlet of the compression chamber provided in the compression mechanism (). Thus, a decrease in density of the refrigerant to be compressed, sucked into the sealed vessel (), can be prevented to prevent a decrease in refrigeration capacity, and the temperature of the motor () can be lowered to improve a motor efficiency.