An air management device may include three independently operated primary impellers 131, 131′, 131″, and drawn-in air is discharged through discharge ports 15′-1, 15′-2, 15′-3 provided in the front plate 15 of the housing 10. Louvers 141, 142, 143installed downstream of the air flow and discharge ports 15′-1, 15′-2, 15′-3 may be independently opened or closed to provide discharge of the air to the surrounding environment. Further, at least one retractable or pop-up fan may be provided. A bottom inlet 11′ may be formed on the bottom plate 11 of the housing 10 facing the floor of the living space above a predetermined distance. The replaceable filter 300 may be installed to filter the air sucked through the bottom inlet 11′, and may be drawn in and out of the housing 10.

An air management device may include three independently operated primary impellers 131, 131′, 131″, and drawn-in air is discharged through discharge ports 15′-1, 15′-2, 15′-3 provided in the front plate 15 of the housing 10. Louvers 141, 142, 143installed downstream of the air flow and discharge ports 15′-1, 15′-2, 15′-3 may be independently opened or closed to provide discharge of the air to the surrounding environment. Further, at least one retractable or pop-up fan may be provided. A bottom inlet 11′ may be formed on the bottom plate 11 of the housing 10 facing the floor of the living space above a predetermined distance. The replaceable filter 300 may be installed to filter the air sucked through the bottom inlet 11′, and may be drawn in and out of the housing 10.

A floor-standing air conditioner includes a first member that opens or closes a first flow path, a second member that opens or closes a second flow path, and a control unit that controls a fan, the first member, and the second member. The control unit is configured to perform a first blowing process of blowing out air from the first blow-out port with the first flow path opened by the first member and the second flow path closed by the second member, a second blowing process of blowing out air from the second blow-out port with the first flow path closed by the first member and the second flow path opened by the second member, and a blow-out port switching process of blowing out air from both the first blow-out port and the second blow-out port during switching between the first blowing process and the second blowing process.

A floor-standing air conditioner includes a first member that opens or closes a first flow path, a second member that opens or closes a second flow path, and a control unit that controls a fan, the first member, and the second member. The control unit is configured to perform a first blowing process of blowing out air from the first blow-out port with the first flow path opened by the first member and the second flow path closed by the second member, a second blowing process of blowing out air from the second blow-out port with the first flow path closed by the first member and the second flow path opened by the second member, and a blow-out port switching process of blowing out air from both the first blow-out port and the second blow-out port during switching between the first blowing process and the second blowing process.

An air conditioner includes a heat exchanger, a fan and a fan case in which the fan is accommodated. The fan case includes an inlet opening through which air sucked by the fan enters the fan and an outlet opening through which the air that entered the fan is blown by the fan to be discharged from the fan case. An air guide is spaced from a lower end portion of the outlet opening to form a gap through which the air flows to guide the air to a down direction. The air guide includes an inclined portion inclined downward toward an outer side in a lateral direction to guide air to the lateral direction.

An air conditioner including an indoor unit housing; an indoor heat exchanger configured to exchange heat with air flowing into the indoor unit housing; a compressor configured to compress a refrigerant for a cooling operation or a heating operation performed by the air conditioner; a four-way valve configured to switch a circulation direction of the refrigerant based on whether the air conditioner is to perform the cooling operation or the heating operation; a first blower fan located in the indoor unit housing and configured to blow heat-exchanged air out of the indoor unit housing; a second blower fan located in the indoor unit housing at a higher position than the first blower fan and configured to blow heat-exchanged air out of the indoor unit housing; and a processor electrically connected to the compressor, the four-way valve, the first blower fan, and the second blower fan, and configured to, during the heating operation, adjust a rotational speed of the first blower fan to be higher than a rotational speed of the second blower fan.

A dehumidification system includes a compressor, a primary evaporator, a primary condenser, a secondary evaporator, and a secondary condenser. The secondary evaporator receives an inlet airflow and outputs a first airflow to the primary evaporator. The primary evaporator receives the first airflow and outputs a second airflow to the secondary condenser. The secondary condenser receives the second airflow and outputs a third airflow to the primary condenser. The primary condenser receives the third airflow and outputs a dehumidified airflow. The compressor receives a flow of refrigerant from the primary evaporator and provides the flow of refrigerant to the primary condenser.

A dehumidification system includes a compressor, a primary evaporator, a primary condenser, a secondary evaporator, and a secondary condenser. The secondary evaporator receives an inlet airflow and outputs a first airflow to the primary evaporator. The primary evaporator receives the first airflow and outputs a second airflow to the secondary condenser. The secondary condenser receives the second airflow and outputs a third airflow to the primary condenser. The primary condenser receives the third airflow and outputs a dehumidified airflow. The compressor receives a flow of refrigerant from the primary evaporator and provides the flow of refrigerant to the primary condenser.

Disclosed is an indoor unit for an air conditioner. The indoor unit for the air conditioner according to the present invention includes: a cabinet assembly forming an external appearance of the indoor unit and having an air suction port formed in a rear of the cabinet assembly; a filter module disposed at the air suction port to filter dust contained in air being introduced through the air suction port; a filter cleaner configured to move upward and downward in a rear of the filter module to remove foreign substances stuck in the filter module; a guide rail vertically disposed on one side of the filter module and configured to guide upward and downward movement of the filter cleaner, wherein the filter cleaner comprises: a mobile gear configured to rotate while engaged with the guide rail to move the filter cleaner upward and downward with respect to the filter module, a gear motor configured to rotate the mobile gear, an agitator configured to rotate in friction with the filter module, a dust container disposed downward of the agitator and collecting foreign substances separated from the filter module due to the rotation of the agitator, and a guide roller bringing the filter cleaner into close contact with the filter module so that part of the agitator rotates while in contact with the filter module.

Provided is an air conditioner including a variable air volume control device. The air conditioner includes: an indoor unit main body including a main outlet through which air is discharged; a blower placed in the indoor unit main body and blowing air toward the main outlet; and a controller adjusting a second discharge rate of air in an air cleaning mode independently of a first discharge rate of air in a heating or cooling mode, wherein the second discharge rate of air is varied within a range different from a range in which the first discharge rate of air is varied.