A clean air apparatus includes a fan and a filter for producing a flow of clean air and for discharging the clean air from an outlet and towards a target clean area. The apparatus includes a Coanda effect device disposed at least adjacent the clean air means, which is arranged, in use, to induce a Coanda effect upon the flow of clean air. The apparatus includes guide means for guiding the clean air towards a target clean area in the form of an air curtain. A method for discharging clean air towards a target clean area in the form of an air curtain includes inducing a Coanda effect upon the flow of clean air using the Coanda effect device; and guiding the discharged clean air, downstream of the Coanda effect device, towards a target clean area in the form of an air curtain.

An evaporator for use in a refrigeration system includes one or more Coanda evaporation chambers having an integrated, internal expansion device. The internal expansion device is a linear atomization tube having a plurality of ejection holes arranged in a series of spiral rows. Liquid refrigerant introduced into the linear atomization to is ejected onto the inner wall of the Coanda evaporation chamber, covering it completely with a thin layer of liquid refrigerant. Liquid refrigerant is fed to the linear atomization device in a series of rapid pulses.

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.

A ventilation device (2) for generating an air flow through a motor vehicle heat exchanger (1) is disclosed. The ventilation device (2) includes a plurality of ducts (8), at least one air manifold (12) including at least one air flow inlet (13.sub.1; 13.sub.2) and ports, each duct (8) opening at one of the ends thereof into a port (14) separate from the air manifold (12), where the air manifold (12; 100; 200; 300; 400; 500) is provided with air guides (104, 402) configured to guide the air flow passing through the air manifold (12; 100; 200; 300; 400; 500).

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.

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.

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.

The invention provides a system (1) comprising a fan assembly (100) with a plurality of nozzle openings (115a, 115b, . . . ) for creating air flows (111a, 111b, . . . ), the fan assembly (100) configured to provide the air flows (111a, 111b, . . . ) in at least two non-parallel directions (112a, 112b, . . . ), wherein the at least two non-parallel directions (112a, 112b, . . . ) are configured within a virtual cone (30) having an apex angle () selected from the range of 10-170 and having a cone axis (31), a control system (200) configured to control the air flows (11a, 111b, . . . ), the system (1) further comprising a light source (10) configured to generate light source light (11), and the system (1) further comprising heating elements (113a, 113b, . . . ) for heating the respective flows (111a, 111b, . . . ).

A fan includes a main body with a vertical development with respect to a support base on which it is positioned in a condition of use, and defining an internal housing compartment. The fan includes an air suction and distribution unit, disposed inside said compartment, cooperating with apertures made on the main body in order to take in air from outside the main body, and at least one longitudinal aperture for the emission of a stream of air toward the outside. The fan also includes a channeling element positioned in proximity to the at least one longitudinal aperture.

An indoor unit of an air-conditioning apparatus includes a casing having an air inlet, an air outlet, a front panel disposed to a front surface, a bottom panel disposed to a bottom surface, and a forward-facing panel disposed under the front panel and connected to the bottom panel at a right angle or an obtuse angle. The air outlet extends from the bottom panel to the forward-facing panel and includes a lower corner at which the bottom panel and an air-outlet side wall join together and a forward-facing corner at which the forward-facing panel and the air-outlet side wall join together. The lower corner and the forward-facing corner each have an edge removed to have an edge-removal dimension of the forward-facing corner that is smaller than an edge-removal dimension of the lower corner.