Patent ID: 6345667
Filing Date: 2002-02-12
Classification: F24F

Abstract:
A ceiling embedded indoor unit comprising:a casing; a U-shaped heat exchanger placed within said casing, the U-shaped heat exchanger comprising two side portions and a bottom portion connecting said side portions at one end side, said side portions and said bottom portion being arranged in a horizontal direction; a plurality of centrifugal blowers arranged side by side from the bottom portion of the U-shaped heat exchanger to an open end side of the U-shaped heat exchanger in an inner space of said U-shaped heat exchanger; a plurality of motors each fixed to a ceiling side of the casing at an upper end thereof and having a rotary shaft, said plurality of centrifugal blowers being mounted at lower ends of the rotary shafts; a decorative panel mounted to a lower surface of the casing and having two elongated air outlet ports corresponding to the side portions of the U-shaped heat exchanger and an elongated air suction port formed between said air outlet ports; and a control apparatus placed within the casing, wherein the control apparatus is operable to control said plurality of centrifugal blowers so that the number of rotations of the centrifugal blower near a valley portion of the U-shaped heat exchanger is higher than the number of rotations of the centrifugal blower near the open end of the U-shaped heat exchanger.