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:
Dec. 26, 1995
Filed:
Sep. 30, 1994
Masahiro Iio, Konan, JP;
Zexel Corporation, Tokyo, JP;
Abstract
In order to perform a heating operation with the correct quantity of coolant at all times by retaining an approximately fixed quantity of coolant in a main condenser during the initial stage of a heating operation in an air conditioning system, a first valve is opened and, at the same time, a second valve is closed before executing the heating operation to run the cooling/heating cycle as a cooling cycle for a specific length of time. Then, after opening a bypass passage by opening the second valve, the first valve is closed to close off the passage leading to the main condenser to start the heating cycle. As a result, a fixed quantity of coolant can always be retained within the main condenser, realizing the operation of a heating cycle with a correct coolant quantity.