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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 10197307 B1

PDFFull Text
Date of Patent:
Feb. 05, 2019

Filed:

Jan. 08, 2016

Air conditioner with oil level control for both gas and electric heat pump cycles

Applicant:

Lg Electronics Inc., Seoul, KR;

Inventors:

Hojong Jeong, Seoul, KR;

Kwangho Shin, Seoul, KR;

Minho Chung, Seoul, KR;

Song Choi, Seoul, KR;

Assignee:

LG ELECTRONICS INC., Seoul, KR;

Attorney:

Dentons US LLP

Primary Examiner:

Jonathan Bradford

Int. Cl.
CPC ...
F25B 43/02 (2006.01); F25B 13/00 (2006.01); F25B 27/00 (2006.01); F25B 31/00 (2006.01); F25B 49/02 (2006.01); F25B 27/02 (2006.01); F25B 40/06 (2006.01);
U.S. Cl.
CPC ...
F25B 13/00 (2013.01); F25B 27/00 (2013.01); F25B 31/002 (2013.01); F25B 49/02 (2013.01); F25B 27/02 (2013.01); F25B 40/06 (2013.01); F25B 2313/021 (2013.01); F25B 2313/0253 (2013.01); F25B 2327/001 (2013.01); F25B 2500/16 (2013.01); F25B 2600/021 (2013.01); F25B 2600/13 (2013.01); F25B 2600/2513 (2013.01); Y02A 30/274 (2018.01); Y02B 30/741 (2013.01); Y02B 30/745 (2013.01);
Abstract

Provided is an air conditioner including at least one indoor unit; an EHP outdoor unit connected with the at least one indoor unit, and configured to control an applied current and drive an EHP compressor; a GHP outdoor unit connected with the at least one indoor unit and including a GHP compressor configured to operate using power from an engine driven through a combustion gas and an oil separator provided at an outlet side of the GHP compressor; an oil level sensor provided at the EHP outdoor unit or the GHP outdoor unit and configured to detect an amount of oil; and a control part configured to control an RPM of the EHP compressor or the GHP compressor based on information detected by the oil level sensor.

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