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. 13, 1984
Filed:
Mar. 29, 1982
Tamotsu Nomaguchi, Minoo, JP;
Masahiro Sakai, Kobe, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
The disclosed airconditioner has a refrigerant compressor connected to a refrigerant circuit through a four-way valve in each of the room cooling mode and a first room warming mode of operation. The refrigerant circuit has an indoor heat exchanger, an externally heated heat exchanger, a piping, a first electromagnetic valve and an outdoor heat exchanger connected in series. A second electromagnetic valve is connected in parallel to the outdoor heat exchanger between the piping and the four-way valve to form the refrigerant circuit along with the indoor heat exchanger, the externally heated heat exchanger and the piping for the second room warming mode of operation. During the room cooling mode and first room warming mode of operation, the first electromagnetic valve is opened and the piping and the externally heated heat exchanger hold an amount of liquid refrigerant equal to the volume of the outdoor heat exchanger, while in the second room warming mode of operation in which the second electromagnetic valve and an electromagnetic valve connected across the compressor are open the outdoor heat exchange is filled with liquid refrigerant.