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:
Jan. 27, 1998
Filed:
Jul. 12, 1996
Yasuo Uchikawa, Amagasaki, JP;
Kaoru Hamada, Amagasaki, JP;
Kubota Corporation, Osaka, JP;
Abstract
A heat pump apparatus includes a compressor, an expander, at least three heat exchangers and a cooling-medium route switchover device for switching over cooling-medium (refrigerant) route to the heat exchangers so as to selectively provide a two-evaporator operation mode in which two of the heat exchangers are used as evaporators and the other heat exchanger is used as a condenser and a two-condenser operation mode in which two of the heat exchangers are used as condensers and the other heat exchanger is used as an evaporator. The heat exchangers used as evaporators in the two-evaporator operation mode or as condensers in the two-condenser operation mode are serially connected with each other.