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:
Mar. 25, 2003
Filed:
Aug. 30, 2001
Ryuzaburo Yajima, Osaka, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A refrigerant circuit ( ) in a casing ( ) is charged with a slightly flammable R3 refrigerant whose specific gravity is greater than that of air. The inside of the casing ( ) is zoned into a utilization side air passageway ( ) and a heat source side air passageway ( ). An evaporator ( ) and a condenser ( ) are disposed in the utilization side air passageway ( ) and in the heat source side air passageway ( ), respectively. The utilization side air passageway ( ) communicates with the inside of a room through ducts ( ). Formed in a lower potion of the casing ( ) is a slit-like opening portion ( ). The opening portion ( ) opens to a lower portion of the utilization side air passageway ( ). Leaking refrigerant from the refrigerant circuit ( ) travels downwardly by gravity and is automatically discharged, through the opening portion ( ), to outside the casing ( ).