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:
Nov. 12, 2019
Filed:
May. 21, 2014
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Tetsuhide Yokoyama, Chiyoda-ku, JP;
Yosuke Shinomoto, Chiyoda-ku, JP;
Shogo Moroe, Chiyoda-ku, JP;
Akira Satake, Chiyoda-ku, JP;
Masashi Fujitsuka, Chiyoda-ku, JP;
Takeshi Mori, Chiyoda-ku, JP;
Taro Kato, Chiyoda-ku, JP;
Hideaki Maeyama, Chiyoda-ku, JP;
Keiko Tada, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Abstract
A heat pump apparatus, including: a two-cylinder compressor including: an electric motor; two compression units to be driven by the electric motor, the two-cylinder compressor being structured to switch between two operation modes including single operation in which one of the compression units is brought into a non-compression state, and parallel operation in which both the compression units are brought into a compression state; an inverter drive control device supplying drive power to the electric motor of the two-cylinder compressor; an operation mode detecting-determining unit determining a current operation mode based on an electric signal acquired from the inverter drive control device; and a capacity control device determining a rotating frequency of the electric motor so that a temperature of a target object is brought close to a set value, to thereby control the inverter drive control device based on a result of determination of the operation mode detecting-determining unit.