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:
Oct. 13, 1987
Filed:
Sep. 15, 1986
Hitachi, Ltd., Tokyo, JP;
Abstract
An air conditioner has a refrigeration system comprising by a compressor, a reversing valve, an indoor heat exchanger, an expansion device and an outdoor heat exchanger which are connected in series to form a closed system, a bypass pipe equiped with a two-way valve, connected in parallel with the outdoor heat exchanger between the delivery side of the compressor and the refrigerant inlet side of the outdoor heat exchanger. An outdoor blower is provided for the outdoor heat exchanger. The two-way valve is adapted to permit hot refrigerant gas delivered by the compressor to be recirculated through the outdoor heat exchanger thereby effecting defrosting of the outdoor heat exchanger. The air conditioner further has an expansion control means for controlling the extent of expansion of the refrigerant in accordance with the temperature of the refrigerant in the refrigeration system, and an outdoor blower speed control means for maintaining a constant speed of the outdoor blower when the outdoor air temperature is below a predetermined set temperature.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile