An indoor unit for an air-conditioning apparatus includes an air-sending unit configured to send air subjected to heat exchange with refrigerant to an air-conditioning target space through an air outlet, the air-conditioning target space being divided into a plurality of areas, an up-and-down airflow direction adjuster configured to adjust an angle in an up-and-down direction of a blowing direction of the air sent through the air outlet, a right-and-left airflow direction adjuster configured to adjust an angle in a right-and-left direction of the blowing direction of the air sent through the air outlet, and a controller configured to control the angle of the up-and-down airflow direction adjuster and the angle of the right-and-left airflow direction adjuster. The controller is configured to control the up-and-down airflow direction adjuster and the right-and-left airflow direction adjuster to continuously change the angle in the up-and-down direction and the angle in the right-and-left direction.

An air-conditioning system is provided that may include a first air-processing apparatus, which includes a first outlet formed to be open toward a floor and a first inlet formed to be open in a direction inclined relative to a direction in which the first outlet is open and is configured to deliver heat-exchanged air to the first outlet, and a second air-processing apparatus, which includes a second outlet formed to be open in a direction parallel to the first outlet and a second inlet formed to be open in a direction parallel to the first inlet and is configured to deliver purified air to the second outlet. The first outlet and the second outlet extend in a lateral direction, and the first air-processing apparatus and the second air-processing apparatus are arranged in the lateral direction.

An air-conditioning system is provided that may include a first air-processing apparatus, which includes a first outlet formed to be open toward a floor and a first inlet formed to be open in a direction inclined relative to a direction in which the first outlet is open and is configured to deliver heat-exchanged air to the first outlet, and a second air-processing apparatus, which includes a second outlet formed to be open in a direction parallel to the first outlet and a second inlet formed to be open in a direction parallel to the first inlet and is configured to deliver purified air to the second outlet. The first outlet and the second outlet extend in a lateral direction, and the first air-processing apparatus and the second air-processing apparatus are arranged in the lateral direction.

An air-conditioning system is provided that may include a first air-processing apparatus, which includes a first inlet formed in a first surface thereof that extends perpendicular to a floor or a ceiling and a first outlet formed in a second surface thereof perpendicular to the first inlet and induces air introduced into the first inlet to exchange heat with refrigerant and to be discharged through the first outlet, and a second air-processing apparatus, which includes a second outlet formed therein so as to be open in a same direction as the first outlet and a second inlet formed therein so as to be open in a same direction as the first inlet. The air-conditioning system may be driven in a combined operation mode in which the first and second air-processing apparatuses operate simultaneously or an independent operation mode in which one of the first air-processing apparatus or the second air-processing apparatus operates.

An air-conditioning system is provided that may include a first air-processing apparatus, which includes a first inlet formed in a first surface thereof that extends perpendicular to a floor or a ceiling and a first outlet formed in a second surface thereof perpendicular to the first inlet and induces air introduced into the first inlet to exchange heat with refrigerant and to be discharged through the first outlet, and a second air-processing apparatus, which includes a second outlet formed therein so as to be open in a same direction as the first outlet and a second inlet formed therein so as to be open in a same direction as the first inlet. The air-conditioning system may be driven in a combined operation mode in which the first and second air-processing apparatuses operate simultaneously or an independent operation mode in which one of the first air-processing apparatus or the second air-processing apparatus operates.

A ceiling type air conditioner including an indoor unit having a built-in heat exchanger and a built-in blower, and having a plurality of blowing passages for discharging, to the outside, air having passed through the heat exchanger; a discharge panel having a plurality of inlets into which air discharged through the plurality of blowing passages is delivered, an inner space at least partially communicating with the partiality of inlets, and a ring-or arc-shaped opening for discharging, into a room, air flowing into the inner space; and an air guide module mounted to the discharge panel, and moved upward and downward or rotated so as to vary airflow discharged through the opening.

A ceiling type air conditioner including an indoor unit having a built-in heat exchanger and a built-in blower, and having a plurality of blowing passages for discharging, to the outside, air having passed through the heat exchanger; a discharge panel having a plurality of inlets into which air discharged through the plurality of blowing passages is delivered, an inner space at least partially communicating with the partiality of inlets, and a ring-or arc-shaped opening for discharging, into a room, air flowing into the inner space; and an air guide module mounted to the discharge panel, and moved upward and downward or rotated so as to vary airflow discharged through the opening.

A double-sided uniform air discharge ceiling cassette, including a case, and a centrifugal fan wheel, a first heat exchanger, and a second heat exchanger which are mounted within the case, the first heat exchanger and the second heat exchanger respectively forming an air discharge duct with two inner side walls of the case, the centrifugal fan wheel being located between the first heat exchanger and the second heat exchanger, and an air outlet of the centrifugal fan wheel facing an inner top face of the case, the inner top face of the case is provided with a flow guide plate, the flow guide plate is of a V-shaped structure with an included angle, and the included angle of the flow guide plate faces the air outlet of the centrifugal fan wheel.

A double-sided uniform air discharge ceiling cassette, including a case, and a centrifugal fan wheel, a first heat exchanger, and a second heat exchanger which are mounted within the case, the first heat exchanger and the second heat exchanger respectively forming an air discharge duct with two inner side walls of the case, the centrifugal fan wheel being located between the first heat exchanger and the second heat exchanger, and an air outlet of the centrifugal fan wheel facing an inner top face of the case, the inner top face of the case is provided with a flow guide plate, the flow guide plate is of a V-shaped structure with an included angle, and the included angle of the flow guide plate faces the air outlet of the centrifugal fan wheel.

An air-conditioning indoor unit and an air conditioner are provided. The indoor unit has a surface frame, a breezeless member, an outer deflector, a heat exchanger, and a fan. The surface frame has a first air outlet defined on a front lower part of the surface frame. The first air outlet penetrates a front part and a bottom of the surface frame. The breezeless member is disposed at a front side of the surface frame. The outer deflector is capable of opening and closing a bottom side of the first air outlet. The breezeless member is configured to open a front side of the first air outlet when located at a first position, and to close the front side of the first air outlet when located at a second position.