Patent ID: 6536225
Filing Date: 2003-03-25
Classification: F24F,F25B,F25D

Abstract:
An air-conditioning apparatus comprising an outdoor casing (11) for housing a refrigerant circuit (20) charged with refrigerant,wherein a utilization side air passageway (35) in which a utilization side heat exchanger (24) for said refrigerant circuit (20) is disposed and a heat source side air passageway (31) in which a heat source side heat exchanger (22) for said refrigerant circuit (20) is disposed are formed in said casing (11), said passageways (35) and (31) being in communication with the inside and the outside of a room, respectively, wherein an opening portion (40) allowing said utilization side air passageway (35) to communicate with the outside of said casing (11) is formed in said casing (11), wherein said refrigerant of said refrigerant circuit 10 (20) comprises a substance whose atmospheric specific gravity is greater than that of air; wherein an air suction opening (38) is formed in a lateral portion of said casing (11), thereby allowing said utilization side air passageway (35) to communicate with the inside of said room through a duct (17) connected to said air suction opening (38); and wherein said opening portion (40) is so formed as to open to said utilization side air passageway (35) at a level lower than the uppermost portion of said air suction opening (38).