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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.:

US 11874031 B1

PDFFull Text
Date of Patent:
Jan. 16, 2024

Filed:

Dec. 18, 2019

Oil control for climate-control system

Applicant:

Copeland Lp, Sidney, OH (US);

Inventors:

Michael A. Saunders, Sidney, OH (US);

Natarajan Rajendran, Centerville, OH (US);

Michael M. Perevozchikov, Tipp City, OH (US);

Kirill M. Ignatiev, Sidney, OH (US);

Assignee:

Copeland LP, Sidney, OH (US);

Attorney:

Harness, Dickey & Pierce, P.L.C.

Primary Examiner:

Nael N Babaa

Int. Cl.
CPC ...
F25B 49/02 (2006.01); F25B 1/10 (2006.01); F04B 39/02 (2006.01); F04D 25/16 (2006.01); F04D 27/00 (2006.01); F04D 29/063 (2006.01); F25B 13/00 (2006.01); F04C 28/02 (2006.01); F04C 29/02 (2006.01); F04C 18/02 (2006.01); F04C 23/00 (2006.01); F04B 41/06 (2006.01); F04B 23/04 (2006.01);
U.S. Cl.
CPC ...
F25B 1/10 (2013.01); F04B 23/04 (2013.01); F04B 39/023 (2013.01); F04B 39/0207 (2013.01); F04B 41/06 (2013.01); F04C 18/023 (2013.01); F04C 18/0215 (2013.01); F04C 23/008 (2013.01); F04C 28/02 (2013.01); F04C 29/02 (2013.01); F04C 29/028 (2013.01); F04D 25/16 (2013.01); F04D 27/00 (2013.01); F04D 29/063 (2013.01); F25B 13/00 (2013.01); F25B 49/022 (2013.01); F04C 2270/24 (2013.01); F25B 2400/0401 (2013.01); F25B 2400/13 (2013.01);
Abstract

A system may include a first compressor, a second compressor, a first heat exchanger and a second heat exchanger. The first compressor has a first inlet and a first outlet. The second compressor is a sumpless compressor and has a second inlet and a second outlet. The second compressor provides working fluid discharged from the second outlet to the first compressor. The first heat exchanger is disposed upstream of the second compressor and provides working fluid to the second compressor. The second heat exchanger is disposed upstream of the first compressor and provides working fluid to the first compressor.

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