Disclosed herein is an air conditioner. The air conditioner includes a housing having an inlet and an outlet, and having a first guide surface forming the outlet and a second guide surface facing the first guide surface provided therein, a heat exchanger configured to heat-exchange air suctioned through the inlet, a blower fan configured to suction air from the inlet, heat-exchange the air by passing air through the heat exchanger, and discharge air toward the outlet, and an airflow control unit provided to be movable between a first position adjacent to one end portion of the outlet from which air is discharged and a second position spaced apart from the end portion of the outlet from which air is discharged, and protruding from the first guide surface or the second guide surface when the airflow control unit placed at the first

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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.

In an air-conditioning device, back flow is less likely to occur at an outlet port in relation to an inlet resistance, and the air-conditioning device includes: a main body having an inlet port and an outlet port; a cross-flow fan provided inside the main body; and a heat exchanger provided inside the main body, wherein the main body includes at least a front surface, a rear surface, an upper surface and a lower surface, the inlet port is formed in the upper surface, a ratio H/Df between the main body height dimension H and the fan outer diameter Df is 2.2 to 2.7, and an angle of inclination between a rear part of an front upward inclination section of the heat exchanger and a vertical direction is 30° to 45°.

An air flow controller for an air cleaner and an air cleaner are provided. The air flow controller may include a fan, and a housing, the fan being provided in the housing and the housing being movable from an initial horizontal position in which the air flow controller directs air flow in a vertical direction to an inclined position in which the air flow controller directs air flow in a diagonal direction.

An air conditioner includes an air conditioner body including a cross-flow air duct and an air outlet in communication with the cross-flow air duct, a cross-flow impeller arranged at the cross-flow air duct and located upstream of the air outlet, and an air guide assembly including an air guide member rotatable around a pivot axis at the air outlet. The air conditioner body includes a first volute and a second volute arranged opposite to each other in a cross section perpendicular to a rotation axis of the cross-flow impeller. The cross-flow air duct is located between the first volute and the second volute. A set air duct is formed between the air guide member and the first volute when an air output volume of the air conditioner is maximum. A width of the set air duct in the cross section first increases and then decreases along an air output direction.

An air conditioner includes an air conditioner body including a cross-flow air duct and an air outlet in communication with the cross-flow air duct, a cross-flow impeller arranged at the cross-flow air duct and located upstream of the air outlet, and an air guide assembly including an air guide member rotatable around a pivot axis at the air outlet. The air conditioner body includes a first volute and a second volute arranged opposite to each other in a cross section perpendicular to a rotation axis of the cross-flow impeller. The cross-flow air duct is located between the first volute and the second volute. A set air duct is formed between the air guide member and the first volute when an air output volume of the air conditioner is maximum. A width of the set air duct in the cross section first increases and then decreases along an air output direction.

An air conditioner includes a main body that includes a suction port and an outlet port, wherein: the main body includes a front surface, a back surface, an upper surface, a lower surface, and a pair of side surfaces; the suction port is formed on any of the front surface, the upper surface, and the side surfaces; the outlet port is formed on at least the lower surface; an outlet air channel is upstream from the outlet port; a side of the outlet air channel near the front surface is formed by a diffuser; and the diffuser includes a portion that diverges from an imaginary straight line that constitutes a direction of extension of an upstream portion of the diffuser increasingly toward a downstream end of the diffuser in a side view.

An indoor unit of an air conditioner has an improved discharge structure of air. The indoor unit of an air conditioner includes a panel which defines an external appearance thereof and has an opening, a mixed flow fan which is located within the panel, a heat exchanger unit which is located rearward of the mixed flow fan, an inlet port which is located rearward of the heat exchanger unit so that air is suctioned from rearward of the heat exchanger unit to be introduced into the mixed flow fan, an outlet port which is exposed forward of the panel through the opening so that the air passing though the mixed flow fan is discharged through a front portion of the panel, and a plurality of circular louvers to open and close the outlet port by moving outwards from a center of the outlet port.

An air duct having first to third air ducts, each of the first to third air ducts has a duct structure having a first end and a second end, the duct structure of the each of the first to third air ducts are separable from each other, a cross sectional area of the first end is greater than a cross sectional area of the second end, a plurality of cross sectional areas between the first end and the second end decrease progressively from the first end to the second end, and the first to third air ducts are communicated successively in a direction such that the second end of the duct structure of the third air duct is arranged closer to the second end of the duct structure of the first air duct and further from the first end of the duct structure of the first air duct.

A breezeless structure and an air conditioner are provided. The breezeless structure has an air dispersing structure, which has a stationary blade assembly and a rotating member spaced apart from each other in an air-flowing direction. The rotating member is rotatable relative to the stationary blade assembly. The stationary blade assembly has a plurality of stationary blades spaced apart from each other in a circumferential direction of the stationary blade assembly. The rotating member has a plurality of rotating blades spaced apart from each other in a circumferential direction of the rotating member. Each rotating blade is obliquely disposed to allow air to flow on opposite side walls of the rotating blade. Alternatively or additionally, each stationary blade is obliquely disposed to allow air to flow on opposite side walls of the stationary blade.