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. 13, 2014
Filed:
Sep. 15, 2011
Naoki Wakuta, Chiyoda-ku, JP;
Yohei Kato, Chiyoda-ku, JP;
Shinya Matsushita, Chiyoda-ku, JP;
Takanori Omori, Chiyoda-ku, JP;
Hirokuni Shiba, Chiyoda-ku, JP;
Naoki Wakuta, Chiyoda-ku, JP;
Yohei Kato, Chiyoda-ku, JP;
Shinya Matsushita, Chiyoda-ku, JP;
Takanori Omori, Chiyoda-ku, JP;
Hirokuni Shiba, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Chiyoda-Ku, Tokyo, JP;
Abstract
When a compressor is in a stopped state and an outside air temperature change rate Tah exceeds zero, a first heating operation is started, and a heating capacity of a compressor heating portion is set in a range not more than a heating capacity upper limit Pmax based on the outside air temperature change rate Tah. A remaining refrigerant liquid amount Ms condensed in the compressor that had not been evaporated is acquired based on the outside air temperature change rate Tah and the heating capacity. If the outside air temperature change rate Tah is zero or below and the remaining refrigerant liquid amount Ms exceeds zero while the compressor is in a stopped state, a second heating operation is started, the compressor heating portionis controlled based on the remaining refrigerant liquid amount Ms, and the refrigerant condensed in the compressoris evaporated.