Abstract: 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.

Abstract: Provided is an indoor unit for an air conditioner. The indoor unit for the air conditioner includes a case having at least one suction hole, a heat exchanger disposed at a side of the suction hole, a fan rotatably disposed at a discharge side of the heat exchanger, a front panel coupled to a front portion of the case, the front panel including a discharge part, a discharge panel disposed on the discharge part, and a guide device disposed to surround the fan, the guide device having a curved surface for guiding air discharged from the fan to the guide part.

Abstract: A separating device (3) for separating particles from an intake air (2) of an internal combustion engine, comprising two cyclone cells (5, 6) which are designed to cause two raw air streams (7, 8) containing the intake air (2) to rotate oppositely and a discharge device (49) which is designed to guide an exhaust air stream (35, 36) containing the particles tangentially away from a respective cyclone cell (5, 6) and to combine the exhaust air streams (35, 36) to a common exhaust air stream (53).

Abstract: The disclosure relates to a method for operating a ventilation system with a mixing chamber into which air is supplied via a first supply duct and via at least one further supply duct. Air is removed from the mixing chamber by a removal duct. The supply of air—volume control—into the mixing chamber from the supply ducts is controlled in each case via flaps with a plurality of flap leaves and/or a plurality of flap units each having a plurality of intercoupled flap leaves. According to the disclosure, the flap leaves and/or the flap units are activated individually, and an individual opening position of the respective flap leaves or of the flap units with the flap leaves is made possible.

Abstract: Temperature control system at the outlet from at least one distribution opening (10, 11) of a transit chamber (30) of a heating and air conditioning device. According to the invention, said system comprises a plurality of air ducts (20, 50) passing through the transit chamber (30) as far as the distribution opening (10, 11). Automobile vehicle ventilation, heating and air conditioning application.

Abstract: A method for delivering air comprising the steps of: discharging a first air stream, wherein the mass flow rate of first air stream can be varied; and discharging a second air stream, wherein the second air stream is arranged to induce the first air stream to deliver a combined air stream with a mass flow rate that can be varied.

Abstract: Provided is a local clean zone forming apparatus which has an excellent operability and can provide an excellent clean air space without restricting the installation location or the purpose of an operation. In the local clean zone forming apparatus, a pair of push hoods having air blowing surfaces between which an airflow alignment mechanism is formed to form uniform airflows, are disposed so that the uniform airflows discharged from the push hoods are opposite to and collide with each other in a positional relationship wherein the air blowing surfaces are parallel to each other, and the centers of the air blowing surfaces are not directly opposite to each other; and the uniform airflows are obliquely discharged at an angle with respect to the air blowing surfaces.

Abstract: An airflow diffuser (diffuser fan) comprises: a blade wheel formed of blade members 30, spoke members 40 and a hub member 50; a shaft member 20 forming an axis of rotation of the blade wheel; and a suspension member 10 suspending the shaft member 20 from a ceiling surface. This airflow diffuser (diffuser fan) is located so that air blown out from the air outlets of an air conditioner comes in contact with and rotates the blade members. Also, the rotating blade members receive the blown air in succession, and by deflecting the air, diffuse the blown air throughout the entire air-conditioned space.

Abstract: An air circulation module (700) includes a housing and at least one fan (712) that is enclosed within the housing. The at least one fan (712) receives an airflow moving through the housing. An airflow re-circulation valve (701) that is disposed within the housing so as to not substantially interfere with the airflow moving through the housing. The airflow re-circulation valve (701) is selectively opened so as to divert a first portion of the airflow into and through the airflow re-circulation valve (701) and out of the housing via an exhaust port (713).

Abstract: An air handling module for the air conditioning system of a motor vehicle is provided, including a housing having a first portion defining a first path and a second portion defining a second path and a conduit having first and second ends and an enclosed passageway there between. The conduit is positioned within the housing such as to at least partially connect the first path and the second path adjacent to the second end of the conduit.

Abstract: A fixed blade air mixing apparatus includes a plurality of radially extending vanes which extend away from a common center and terminate at their outer ends within a polygonal shaped enclosure. The plurality of vanes may include an inner section which is curved or pitched in one direction, and an outer section which is curved or pitched in a second direction away from the inner section, the inner and outer sections sharing a common leading edge. In another embodiment, the vanes extend straight without a curvature. The apparatus is intended for use in eliminating stratification of airstreams of different temperatures flowing through a common passage, for example, in heating, air conditioning, or other ventilating ducts. The vanes are designed to establish downstream turbulence of the airstreams passing therethrough which produces optimum mixing effectiveness and a uniform velocity profile of the air downstream of the mixing apparatus with a minimum pressure drop as the air flows through the apparatus.

Abstract: A fixed blade air mixing apparatus includes a plurality of radially extending vanes which extend away from a common center and terminate at their outer ends within a polygonal shaped enclosure. The plurality of vanes include an inner section which is curved or pitched in one direction, and an outer section which is curved or pitched in a second direction away from the inner section, the inner and outer sections sharing a common leading edge. The apparatus is intended for use in eliminating stratification of airstreams of different temperatures flowing through a common passage, for example, in heating, air conditioning, or other ventilating ducts. The vanes are designed to establish downstream turbulence of the airstreams passing therethrough which produces optimum mixing effectiveness and a uniform velocity profile of the air downstream of the mixing apparatus with a minimum pressure drop as the air flows through the apparatus.

Abstract: An HVAC housing includes a novel structure to aid the mixing of hot and cold air downstream of the evaporator and heater core. A series of space, parallel, C shaped channels running transverse to the cold air stream and generally in line with the hot air stream act to smoothly constrict the cold air stream in the gaps between the outer surfaces of the channels, while hot air concurrently runs through the inside of the channels. As the cold air passes over the edges of the channel walls, hot air is drawn out and thoroughly mixed.

Abstract: The air mixer defined herein serves for static mixing of a heated air stream in a flow channel of a circulated air stream upstream of a heat treatment chamber for drying textile goods or tissue webs for example. For this purpose the air mixer is provided with air mixing parts that consist of hollow bodies arranged in the flow cross section of the first air stream with spaces between them, said bodies being provided to receive and conduct the second air stream with inlet openings and outlet nozzles located endwise on one side.

Abstract: An air circulation and mixing device is disclosed which can cover a ceiling air ventilation duct, taking air discharged from the duct and drawing air at the room's ceiling, mixing the two, and redirecting the mixed air so that it is discharged radially and parallel to the ceiling, rather than directly downwardly. The device has an open frame whose sides may be covered with removable air filtration media and which forms a primary interior having a lower aperture and normally an upper aperture. An open-sided grille below the lower aperture forms a secondary space. A fan is mounted within the primary space and turns blades within the lower aperture and a disk at the bottom of the secondary space. An annular plate surrounding the fan housing blocks downward flow of incoming air and forces the air to flow radially outwardly around the edge of the plate, thus also insuring good mixing with the incoming ceiling air.

Abstract: A mixing device for mixing two air flows has plural first flexible curtains disposed between first edge regions of alternate pairs of air guides, and a plurality of second flexible curtains disposed between second edge regions of alternate pairs of air guides. Moveable air guides in each pair may be moved to control the flow of air.

Abstract: In building environmental control, primary HVAC services are distributed to multiple terminal units. An active diffuser terminal unit has a variable speed fan to controllably draw room air into the unit for reheating the air; and, conversely, to force conditioned air down into the space for cooling by reversing the direction of the fan motor. Variation of the fan speed serves to modulate the airflow direction mix through a combination of a vertical port and a horizontal port. This closed system avoids filtering plenum air, and reduces cost by supporting both heating and cooling services with a single fan.

Abstract: An air flow mixer structure for a vehicle air conditioning system has a first conduit for a first air flow, a second conduit for a second air flow, an opening between said first and second conduits for merging said first and second air flows in a merging region and a common air channel for said merged air flows, the mixer structure having an air inlet region and an air outlet region opening into said merging region, the structure comprising plural air passages disposed between said inlet region and said outlet region for dividing an air flow at said inlet region into plural air flows at plural said openings into said merging region.

Abstract: A static air mixing apparatus for mixing of air passing through a space of duct. The apparatus includes an inner enclosure at least partially traversing the duct, an outer enclosure surrounding the inner enclosure, a first plurality of radial vanes extending outwardly from a center of the inner enclosure to adjacent the inner enclosure, a second plurality of radial vanes extending from between the inner and outer enclosures, and a transition member forming a divergent retention region downstream of the enclosures for prolonging mixing of different temperature airstreams as they pass through the air mixing apparatus. Further, the apparatus is derived from an optimized depth ratio defined by the ratio of the depth of the enclosures to the minimum diameter of the outer enclosure which is between about 0.25 to 0.40, and a core ratio defined by the ratio of the area of the inner enclosure to the area of the outer enclosure including the area of the inner enclosure which is between about 0.55 to 0.65.

Abstract: A static air mixing apparatus for mixing of air passing through a space or duct. The apparatus includes an inner enclosure at least partially traversing the duct, an outer enclosure surrounding the inner enclosure, a first plurality of radial vanes extending outwardly from a center of the inner enclosure to adjacent the inner enclosure, a second plurality of radial vanes extending from between the inner and outer enclosures, and a transition member forming a divergent retention region downstream of the enclosures for prolonging mixing of different temperature airstreams as they pass through the air mixing apparatus. Further, the apparatus are derived from an optimized depth ratio between the depth of the enclosures to the minimum diameter of the outer enclosure of between 0.37 and 0.40 and core ratio between the core area defined by the inner enclosure to the outer enclosure area including the core area of between about 0.60 to about 0.65.

Abstract: A retrofit air conditioning system for use with an existing induction air conditioning system is disclosed, wherein the existing system includes a central fan unit supplying air to a plurality of distribution units in corresponding rooms. The retrofit air conditioning system includes a retrofit air conditioning unit sized for receipt in an existing distribution unit. The retrofit air conditioning unit includes a fan downstream of an adjustable damper for inducing conditioned air from the central fan unit and for inducing recirculated air from the room. A microcontroller receives a temperature signal from a thermostat and produces a damper signal to adjust the damper in accordance with the sensed temperature. Also disclosed is a retrofit central fan unit for use with the retrofit induction unit, wherein the retrofit central fan unit supplies varying amounts of conditioned air to the distribution units to maintain a constant supply pressure.

Abstract: A novel plenum chamber and system for the mixing and subsequent distribution of two different fluids. In the preferred example the fluid is air and the chamber mixes fresh and recycled air proportionately and subsequently distributes the air stream through buildings, etc. The plenum chamber is in connection with an fresh air inlet duct and a recirculated air inlet duct at opposite ends, and an outlet duct along a third side. Louver panels divide the chamber into passages that are connected to one of the two intake ducts, the passages alternate being in connection with one or the other of the intake ducts so as to create a stratified mixture of air layers, alternating fresh layer, recirculated layer, etc. chambers. The outlet section is in connection with a distribution fan for dispersal to the rest of the building.

Abstract: A method and apparatus for controlling a temperature in a refrigerating chamber of a refrigerator by sensing the temperature of cold-air by firsh and second temperature sensors disposed in the vicinity of cold-air suction and in feed ports, and finely adjusting the suction and feeding of the cold-air by fans disposed in the ports and dampers disposed in the suction port and a cold-air feed passage according to the sensed temperature conditions, whereby local over-refrigeration and cold-air drift phenomena developed in the refrigerating chamber are prevented and the temperature in the chamber is uniformly controlled.

Abstract: A method and apparatus for emulating a perimeter induction unit, in which the perimeter induction unit is replaced by an emulation unit carried in a plenum above the space to be heated or cooled. A temperature sensor is mounted within the space, and a computer provides programmed control, either centrally or locally. The emulation unit is connected to the primary air ducts and secondary liquid source formerly used for the perimeter induction unit. It includes a primary air inlet for accepting and regulating a flow of ventilated, preconditioned primary air from the primary air ducts, and a secondary air inlet for accepting a flow of return air from the space as well as filtering the return air and passing it over a heat exchanger carrying secondary cooling liquid at a preselected temperature. Primary and secondary air is mixed within a mixing chamber and delivered to the space by a blower at a preselected combined air volumetric flow rate.

Abstract: A series-type fan includes an air intake exposed to both ambient and forced ventilation air, a variable capacity fan, and multiple ports positioned downstream from the fan. One of the ports has a damper attached thereto which closes when the fan is de-energized to prevent backspin of the fan.

Abstract: An improved mixing box is disclosed. The mixing box comprises an inlet end, an outlet end, a substantially closed first passage to which primary air flows from a primary air inlet and then through induction means and to and from the outlet end. The induction means are positioned intermediate the inlet and outlet ends and are operable, when primary air flows through the passage, to induce a flow of air through a first opening for mixture with primary air and delivery therewith through the outlet end. The mixing box also comprises means for controlling the rate of flow of primary air and a fan operable to induce a flow of air through a second opening and to deliver such air through the outlet end of the box.