The present invention is related in general to air circulators, and in particular, to an air circulator with a vein control system to direct and adjust airflow patterns. According to an exemplary embodiment, the present invention provides adjustable, vertical veins that are attached to the outlet of a tower fan. According to a preferred embodiment, the veins are pivotally mounted in such a way that by turning a knob, the veins can either he directed into a focused air-flow pattern or adjusted to a divergent air-flow pattern, or at any setting in between.

A purification dehumidifier includes a housing, a fan, a dehumidifier assembly, and a purifier assembly. The housing includes an air inlet, a dehumidified air outlet, and a purified air outlet. An air duct in communication with the air inlet, the dehumidified air outlet, and the purified air outlet is formed in the housing. The fan is arranged in the air duct and configured to introduce an airflow into the air duct from the air inlet and blow the airflow in the air duct out from at least one of the dehumidified air outlet or the purified air outlet. The dehumidifier assembly is arranged in the air duct and corresponding to the dehumidified air outlet. The purifier assembly is arranged in the air duct and corresponding to the purified air outlet.

A purification dehumidifier includes a housing, a fan, a dehumidifier assembly, and a purifier assembly. The housing includes an air inlet, a dehumidified air outlet, and a purified air outlet. An air duct in communication with the air inlet, the dehumidified air outlet, and the purified air outlet is formed in the housing. The fan is arranged in the air duct and configured to introduce an airflow into the air duct from the air inlet and blow the airflow in the air duct out from at least one of the dehumidified air outlet or the purified air outlet. The dehumidifier assembly is arranged in the air duct and corresponding to the dehumidified air outlet. The purifier assembly is arranged in the air duct and corresponding to the purified air outlet.

An air circulation device for an air purifier includes an air passage apparatus which includes an air passage body having a first air outlet and a second air outlet formed in an opposing manner and defining an air passage between the first air outlet and the second air outlet, and an air flow generating unit mounted to the single fan unit in the air passage body and configured to draw air inletting into the air passage and form an air flow flowing towards the first air outlet and the second air outlet. The air circulation device further includes an air distribution member disposed in the air passage body and configured to provide different air outlet flowing speeds at the first air outlet and the second air outlet.

An air circulation device for an air purifier includes an air passage apparatus which includes an air passage body having a first air outlet and a second air outlet formed in an opposing manner and defining an air passage between the first air outlet and the second air outlet, and an air flow generating unit mounted to the single fan unit in the air passage body and configured to draw air inletting into the air passage and form an air flow flowing towards the first air outlet and the second air outlet. The air circulation device further includes an air distribution member disposed in the air passage body and configured to provide different air outlet flowing speeds at the first air outlet and the second air outlet.

An air purifier includes a main housing, an air filter, a driving motor, a centrifugal fan, and an air outlet guider. The air outlet guider includes a central hub connected to the driving motor, a plurality of outlet guiding blades outwardly extended from the central hub, and a peripheral rim connected to the central hub at a distance from the central hub to form an air guiding cavity between the central hub and the peripheral rim. The outlet guiding blades extend in the air guiding cavity. When the driving motor is activated to draw air from the air inlet, the air is forced to sequentially pass through the filter assembly and the guiding cavity. The air in the air guiding cavity is diverted and guided by the outlet guiding blades to form a more streamlined flow which is to be discharged through the air outlet.

An air purifier includes a main housing, an air filter, a driving motor, a centrifugal fan, and an air outlet guider. The air outlet guider includes a central hub connected to the driving motor, a plurality of outlet guiding blades outwardly extended from the central hub, and a peripheral rim connected to the central hub at a distance from the central hub to form an air guiding cavity between the central hub and the peripheral rim. The outlet guiding blades extend in the air guiding cavity. When the driving motor is activated to draw air from the air inlet, the air is forced to sequentially pass through the filter assembly and the guiding cavity. The air in the air guiding cavity is diverted and guided by the outlet guiding blades to form a more streamlined flow which is to be discharged through the air outlet.

An air conditioning system suppresses energy consumption by efficient shared use of air in a common space that is not subjected to air conditioning in an indoor area, among a plurality of air conditioners for the purpose of heat exchange. A plurality of air conditioners each include: a usage-side heat exchanger configured to carry out heat exchange with air in an air-conditioning target space; a heat source-side heat exchanger configured to carry out heat transfer to and from the usage-side heat exchanger; and a heat source-side fan configured to feed air from a common space to the heat source-side heat exchanger and to blow the air into the common space. The heat source-side heat exchangers of the air conditioners are disposed in the common space. A first ventilation fan whose airflow volume is changeable is disposed near an exhaust port through which air is discharged from the common space toward an outdoor area. A controller changes the airflow volume of the ventilation fan, based on information on an air temperature of the common space.

A fan comprises a base to be rotated with respect to a rotation axis, an inlet having an opening formed in a center thereof, the inlet spaced apart from the base with respect to a rotation axis direction, and a blade arranged between the base and the inlet. The blade comprises a first surface facing outward with respect to a radial direction of the fan, a second surface facing inward with respect to the radial direction of the fan, and a curved portion protruding from the first surface.

A fan comprises a base to be rotated with respect to a rotation axis, an inlet having an opening formed in a center thereof, the inlet spaced apart from the base with respect to a rotation axis direction, and a blade arranged between the base and the inlet. The blade comprises a first surface facing outward with respect to a radial direction of the fan, a second surface facing inward with respect to the radial direction of the fan, and a curved portion protruding from the first surface.