An air duct device and an air handling apparatus are provided. The air duct device can include a housing, a first air duct, and a second air duct. The first air duct is arranged in the housing and has an air input end and an air output end. The second air duct is arranged in the housing and has an air input end and an air output end. The air input end of the second air duct passes by the air output end of the first air duct.

An HVAC system includes an evaporator coil disposed between a return air duct and a supply air duct. The system includes a compressor fluidically connected to the evaporator coil, and a blower for providing a flow of air through the HVAC system. The HVAC system includes a supply air recirculation line with a recirculation damper and an evaporator bypass line with a bypass damper. A controller of the HVAC determines a recirculation portion of a flow of air and causes the recirculation damper to move to divert the recirculation portion to the recirculation line, so the air recirculates through the HVAC system. The controller determines a bypass portion of a flow of air and causes the bypass damper to move to divert the bypass portion to the bypass line, so the bypass portion does not contact the evaporator coil.

An air conditioning system includes an outdoor unit including a control device, an indoor unit communicably connected to the control device, and an outside air processor communicably connected to the control device. The indoor unit is capable of performing ordinary operation control to adjust a temperature of air in a room, the air being taken in the indoor unit, and supply the air into the room, and output restriction control under which an output is restricted as compared with an output under the ordinary operation control. The outside air processor is capable of performing ordinary operation control to adjust at least one of a temperature and a humidity of air outside the room, the air being taken in the outside air processor, and supply the air into the room, and output restriction control under which an output is restricted as compared with an output under the ordinary operation control. The control device causes the outside air processor to shift from the ordinary operation control to the output restriction control on condition that the indoor unit shifts from the ordinary operation control to the output restriction control.

An air conditioner includes: a blower configured to discharge air, the blower being connected to an outdoor unit, a parameter generator configured to generate at least one parameter during a time period for which the air conditioner is operated with a first cooling capacity based on a set temperature, a learning unit configured to receive the generated at least one parameter as a learning factor and generate operation mode information, an operation mode controller configured to control at least one of the blower or the outdoor unit based on the generated operation mode information, and a central controller configured to control the parameter generator, the learning unit, and the operation mode controller. The air conditioner is operated with a second cooling capacity after the air conditioner is operated with the first cooling capacity for the time period, the second cooling capacity being different from the first cooling capacity.

An HVAC system includes an evaporator coil disposed between a return air duct and a supply air duct. The system includes a compressor fluidically connected to the evaporator coil, and a blower for providing a flow of air through the HVAC system. A controller determines an operating mode of the HVAC system.

Disclosed is an air conditioner including a structure preventing dew from forming on a surface of a cabinet. The air conditioner includes a housing including an inlet through which air is introduced and an outlet through which air is discharged, a heat exchanger disposed between the inlet and the outlet, a blower disposed inside the housing to suck air through the inlet and to discharge air through the outlet, a discharge panel disposed in front of the housing which includes the outlet, the discharge panel including a plurality of holes through which air discharged from the outlet passes, and an airflow guide disposed between the discharge panel and the blower and configured to guide air discharged from the blower in at least two directions.

Disclosed is an air conditioner including a structure preventing dew from forming on a surface of a cabinet. The air conditioner includes a housing including an inlet through which air is introduced and an outlet through which air is discharged, a heat exchanger disposed between the inlet and the outlet, a blower disposed inside the housing to suck air through the inlet and to discharge air through the outlet, a discharge panel disposed in front of the housing which includes the outlet, the discharge panel including a plurality of holes through which air discharged from the outlet passes, and an airflow guide disposed between the discharge panel and the blower and configured to guide air discharged from the blower in at least two directions.

An indoor unit includes a housing, an air duct member, and a thermal insulation tube. The housing has an accommodating cavity. the air duct member is detachably mounted in the accommodating cavity. A mounting space is formed at a side of the air duct member in a length direction of the air duct member. The mounting space has a mounting opening facing an outside of the housing. The thermal insulation tube includes a tube section extending along a direction perpendicular to the length direction of the air duct member. The tube section is at least partially arranged in the mounting space.

An indoor unit includes a housing, an air duct member, and a thermal insulation tube. The housing has an accommodating cavity. the air duct member is detachably mounted in the accommodating cavity. A mounting space is formed at a side of the air duct member in a length direction of the air duct member. The mounting space has a mounting opening facing an outside of the housing. The thermal insulation tube includes a tube section extending along a direction perpendicular to the length direction of the air duct member. The tube section is at least partially arranged in the mounting space.

An air conditioner includes a main body including a body fan, a heat exchanger, and a body housing. A ventilation hose connects the main body to outdoor air. A ventilation module is attached to an outer side of the body housing, and includes a ventilation fan. The ventilation module switches between an exhaust mode in which indoor air is exhausted to the outdoors through the ventilation hose and an air supply mode in which outdoor air is supplied to the main body through the ventilation hose.