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:
Jul. 02, 2019
Filed:
Mar. 17, 2016
Denso Corporation, Kariya, Aichi-pref., JP;
Ryo Takizawa, Kariya, JP;
DENSO CORPORATION, Kariya, Aichi-pref., JP;
Abstract
A two-stage pressurizing refrigeration cycle is provide with a suction-side guiding portion in a part of a low-stage side suction pipe that leads from a bypass branch portion, at which a bypass pipe is branched, to a refrigerant suction side of a low-stage compressor. The suction-side guiding portion guides a lubricating oil from the refrigerant suction side of the low-stage side compressor to a side of the bypass branch portion. The suction-side guiding portion is located at a position in a vertical direction that is equal to or higher than apposition in the vertical direction of the bypass branch portion, and a part of the suction-side guiding portion on the refrigerant suction side of the low-stage side compressor is located at a higher position in the vertical direction than a part of the suction-side guiding portion on the side of the bypass branch portion.