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:
May. 05, 2020
Filed:
Mar. 11, 2016
Yanmar Co., Ltd., Osaka-shi, Osaka-fu, JP;
Hirotoshi Kihara, Osaka, JP;
Keisuke Ota, Osaka, JP;
Terunori Aikawa, Osaka, JP;
Hirohiko Nobuhara, Osaka, JP;
Hirotaka Nakamura, Osaka, JP;
YANMAR CO., LTD., Osaka, JP;
Abstract
An exemplary heat pump () includes: a compressor (A,B) that discharges refrigerant; an oil separator () that separates oil from the refrigerant discharged from the compressor; an oil return channel () that returns the oil separated by the oil separator to the compressor; a pressure sensor (A,B) that detects a pressure in the oil return channel; a first pressure loss member (A,B) and a second pressure loss member (A,B) disposed in portions of the oil return channel at an oil separator side and a compressor side relative to the pressure sensor; and a control device that increases an output of the compressor in a case where a pressure detected by the pressure sensor exceeds a suction pressure of the compressor and less than a discharge pressure of the compressor.