In an air conditioner, a drain extraction unit and a refrigerant pipe connecting unit may be disposed in a blocking region in which a discharge port is not provided so that a size of the discharge port may be secured and the discharge port may be uniformly disposed, thereby generating uniform airflow in a room. In a lower housing formed in a circular shape, some of components inside an indoor unit of the air conditioner may be disposed in a protrusion portion that protrudes from the circular housing, thereby facilitating the installation of the air conditioner. A condensate water collecting space disposed outside the housing may be provided in a drain tray, thereby efficiently preventing a leakage due to condensate water generated outside the housing. The housing, the drain tray, and the cover member of the air conditioner may be coupled by a coupling member coupled outside.

An air conditioner including an arc shaped discharge port formed in a cylindrical member of a housing; a main fan; an arc shaped heat exchanger between the main fan and an inner peripheral surface of the cylindrical member with respect to a radial direction of the cylindrical member; and an auxiliary fan. A discharge flow path is formed between an outer peripheral end of the heat exchanger and the inner peripheral surface of the cylindrical member. A guide flow path is formed outside the discharge flow path with respect to the radial direction of the cylindrical member. The auxiliary fan is in the discharge flow path and is configured to suck some of the air discharged through the discharge port into the guide flow path. The guide flow path returns the air sucked by the auxiliary fan to the auxiliary fan.

An air conditioner including a housing; a heat exchanger in the housing; an outlet; a blower to discharge air forward toward the outlet, the air having exchanged heat with the heat exchanger; and a guide panel in front of the blower, and including an inner panel coupled with the outer panel, and a suck-in flow path formed by the inner panel and the outer panel, wherein the guide panel forms the outlet with the housing to release a first portion of the air discharged by the blower outside of the housing, and the suck-in flow path sucks in a second portion of the air discharged by the blower so as to guide the first portion of the air to flow outside of the housing in a direction different than when the second portion of the air is not sucked into the suck-in flow path.

An air conditioning indoor unit includes a casing having an air outlet, a horizontal blade, a Coanda blade and a control unit. The horizontal blade changes an up and down direction flow of outlet air blown out from the air outlet. The Coanda blade cooperates with the horizontal blade in order to utilize the Coanda effect to change the outlet air to a Coanda airflow along a predetermined surface. The control unit changes postures of the Coanda blade and the horizontal blade to predetermined postures that change some of the outlet air to the Coanda airflow and do not change a remainder of the outlet air to the Coanda airflow.

A nozzle for a fan assembly has an air inlet, an annular air outlet, and an interior passage for conveying air from the air inlet to the air outlet. The interior passage is located between an annular inner wall, and an outer wall extending about the inner wall. The inner wall at least partially defines a bore through which air from outside the nozzle is drawn by air emitted from the air outlet. The inner wall is eccentric with respect to the outer wall so that the cross-sectional area of the interior passage varies about the bore. The variation in the cross-sectional area of the interior passage can control the direction in which air is emitted from around the air outlet to reduce turbulence in the air flow generated by the fan assembly.

An apparatus for modifying aircraft cabin airflow includes a redirector configured to receive an airflow from an inlet of an aircraft cabin. The redirector is configured to downwardly redirect at least a portion of the airflow. In one embodiment, the redirector includes a dividing portion configured to be oriented generally parallel to the airflow received at the redirector from the cabin inlet, and further includes a redirecting portion configured to be oriented in a generally downward direction. In another embodiment, the redirector includes an elongated protrusion configured to be positioned on a ceiling of the aircraft cabin.

An airflow device including: (i) airflow generating means for generating first and second streams of air; (ii) first and second Coanda surfaces; (iii) means for directing the first and second streams of air over first and second Coanda surfaces respectively; and wherein (iv) the first stream of air leaving the first Coanda surface is directed so as to pass over the second Coanda surface.

A blower may include a lower case having a suction port, a fan provided inside the lower case, an upper case provided above the lower case and having a space through which air blown from the fan flows, a discharge port penetrating the upper case and formed to be elongated, and a flow guide provided in the space and extending in a direction crossing a longitudinal direction of the discharge port.

A blower may include a first case and a second case provided above the first case and having a first tower and a second tower that have a passage therebetween. A display assembly is received in the second case at a position that does not interfere with air flowing in the passage. An inner surface of the second tower and an outer surface of a diffuser define a space in which the display assembly is received.

Embodiments disclosed herein may provide an air conditioner having a case and a cover coupled to the case. A cover separation unit may separate the cover from the case at upper and lower sides. The cover separation unit may include a lever that slides along an outer surface of the case and a pusher rotatably coupled to the lever to rotate to push the cover. A guide may guide the pusher to rotate as the pusher is moved along an outer surface of the case.