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:
Apr. 09, 2024
Filed:
Aug. 06, 2021
Daikin Industries, Ltd., Osaka, JP;
Masaki Yamaguchi, Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
A technique that allows a plurality of series-connected compressors in a refrigerant circuit to have equal amounts of oil in a more versatile manner is provided. A compression apparatus according to an embodiment in the disclosure includes series-connected compressorsin a refrigerant circuitthat is to circulate a refrigerant; an oil separatoris provided in a discharge passageof the compressorof the compressors, and separates oil from the refrigerant discharged from the compressorand causes the refrigerant separated from the oil to flow downstream (intake passage); an oil return passagereturns the oil separated by the oil separatorto the compressorneighboring upstream; an oil discharge outletA is provided in the compressor; and an oil discharge passageconnects the oil discharge outletA to an inlet of the oil separator