A fan assembly includes a motor-driven impeller for creating an air flow, a casing including an interior passage for receiving the air flow, and a plurality of air outlets for emitting the air flow from the casing. The casing defines and extends about an opening through which air from outside the casing is drawn by the air flow emitted from the air outlets. The fan assembly also includes at least one heater for heating at least a first portion of the air flow, and means for diverting at least a second portion of the air flow away from said at least one heater. The plurality of outlets includes at least one first air outlet for emitting the relatively hot first portion of the air flow and at least one second air outlet for emitting the relatively cold second portion of the air flow.

An air vent is described, having a housing with an air inlet section, a main air channel, and an air outlet section, the main air channel having at least two opposing sections, which reduce the size of the main air channel starting from the air inlet section and starting from the air outlet section. At least two air channels, which lead into the main air channel via outlet openings, are arranged behind the sections. A pivotably mounted flap, which closes the air channel when in a non-actuated position, is located in the region of inlet openings in each of the air channels. In addition, at least one control element on a control member and a drive unit are provided, wherein the flaps can be pivoted via the at least one control element by means of pivot levers. The Coanda effect is used to deflect the air.

An apparatus for producing a clean air curtain to protect a first individual and a second individual from germ transfer between themselves has a housing having an input port and an output port. The apparatus comprises a fan disposed in the housing in communication with the input port to draw air into an input channel through the input port, and in communication with the output port through an output channel to force air from the input channel through the output channel and out the output port. The output channel configured to cause the air forced out the output port to create a laminar flow air curtain. The apparatus has an air filter positioned across the input channel to clean the air drawn through the input port. A method for protecting a first individual and a second individual from germ transfer between themselves with an air curtain.

An air conditioner (AC) indoor unit includes a housing having an inlet and an outlet; a heat exchanger arranged inside the housing; a blower fan for sucking in air at the inlet to be subject to heat exchange with the heat exchanger, and discharging the heat-exchanged air out of the outlet; and an air flow control device for controlling an air flow discharged from the outlet by sucking in air around the outlet. The AC indoor unit may control the direction of a discharged air flow without a conventional blade structure, thereby increasing an amount of discharged air, reducing circulation noise, and enabling design differentiation.

An indoor unit for an air-conditioning apparatus includes: a casing, which is to be attached to a wall in a room at a back surface side of the casing; an air inlet and an air outlet, which are formed in the casing; an indoor heat exchanger and an indoor fan, which are arranged in an air passage continuous from the air inlet to the air outlet; an up-and-down airflow direction plate, which is provided in the air outlet so as to be turnable, forms an air outlet passage for blowing air to be blown out through the air outlet in a region located below the air outlet, and is configured to change a direction of the blowing air; and an up-and-down airflow direction assist plate, forms the air outlet passage and is configured to change the direction of the blowing air between the up and down directions.

An indoor unit for an air-conditioning apparatus, which prevents adhesion of dew condensation water to up-and-down airflow direction louvers while directing blowing air to an intended direction, includes: a casing; an air inlet; an air outlet; an indoor heat exchanger and an indoor fan; an up-and-down airflow direction louver; and an up-and-down airflow direction auxiliary louver. The up-and-down airflow direction louver includes: an upstream guide surface and a downstream guide surface. The up-and-down airflow direction auxiliary louver includes an upstream end portion, the upstream end portion being positioned on an inner side of the air outlet passage relative to the downstream guide surface and being positioned on the upstream side relative to a downstream guide surface distal end portion of the downstream guide surface, which is an end portion of the downstream guide surface on the downstream side of the air outlet passage.

In an air conditioner, a drain extraction unit and a refrigerant pipe connecting unit may be disposed in a blocking region in which a discharge port is not provided so that a size of the discharge port may be secured and the discharge port may be uniformly disposed, thereby generating uniform airflow in a room. In a lower housing formed in a circular shape, some of components inside an indoor unit of the air conditioner may be disposed in a protrusion portion that protrudes from the circular housing, thereby facilitating the installation of the air conditioner. A condensate water collecting space disposed outside the housing may be provided in a drain tray, thereby efficiently preventing a leakage due to condensate water generated outside the housing. The housing, the drain tray, and the cover member of the air conditioner may be coupled by a coupling member coupled outside.

Disclosed herein is a air conditioner. The air conditioner a housing including a suction port and a discharge port, a heat exchanger provided inside the housing, a blower fan configured to suction air through the suction port, pass and heat-exchange the air through the heat exchanger, and then discharge the air through the discharge port, and a sub-flow path that suctions and guides some air around the discharge port using a suction force of the blower fan to control the flowing direction of the air discharged from the discharge port.

An air conditioner includes a housing having a suction port and a discharge port, a main fan configured to draw air into the housing through the suction port and discharge air from the housing through the discharge port, an auxiliary fan configured to draw, into the housing, air discharged by the main fan and a controller configured to control a rotational speed of the auxiliary fan to change a direction in which air is discharged from the housing.

An air conditioner (AC) indoor unit includes a housing having an inlet and an outlet; a heat exchanger arranged inside the housing; a blower fan for sucking in air at the inlet to be subject to heat exchange with the heat exchanger, and discharging the heat-exchanged air out of the outlet; and an air flow control device for controlling an air flow discharged from the outlet by sucking in air around the outlet. The AC indoor unit may control the direction of a discharged air flow without a conventional blade structure, thereby increasing an amount of discharged air, reducing circulation noise, and enabling design differentiation.