8143results about "Ducting arrangements" patented technology

A zone thermostat for use in connection with an Electronically-Controlled Register vent (ECRV) that can be easily installed by a homeowner or general handyman is disclosed. The ECRV can be used to convert a non-zoned HVAC system into a zoned system. The ECRV can also be used in connection with a conventional zoned HVAC system to provide additional control and additional zones not provided by the conventional zoned HVAC system. In one embodiment, the ECRV is configured have a size and form-factor that conforms to a standard manually-controlled register vent. In one embodiment, the zone thermostat is configured to provide thermostat information to the ECRV. In one embodiment, the zone thermostat communicates with a central monitoring system that coordinates operation of the heating and cooling zones.

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.

The invention relates to an air channel module and an air channel structure with the air channel module and an air conditioner. The air channel module comprises an air channel main body and a connecting assembly, wherein the air channel main body comprises an air field area in which an airflow air channel is formed, and the airflow air channel is provided with two opposite air outlets; the connecting assembly is arranged on the air channel main body; and a plurality of air channel modules can be connected with each other by virtue of respective connecting assemblies so as to form the air channel structure with a plurality of air field areas. According to the air channel module, different number of air channel modules can form different air channel structures so as to install different number of fan blades, so that the air channel module can be applied to series of products with different heat transfer periods, and the different air channel structures do not need to be independently designed and manufactured according to the products with the different heat transfer periods, so that the design and production cost is effectively reduced, and the production cycle is shortened.

A control is functional to perform a method of determining a maximum desired airflow for each of a plurality of zones in a multi-zone HVAC system, and an expected airflow to those zones. In part, these determinations are based upon an algorithm that calculates the relative size of the ducts leading to each of the zones. The expected and maximum airflows are compared for each of the zones, and if any zone has an expected airflow that exceeds its maximum airflow, certain steps are taken to reduce airflow to that zone.

Air quality within a building is controlled by maintaining a count of people in the building and by ventilating the building with an amount of air dependent on the count. The count may be determined in accordance with an access control system and / or entry and exit sensors, such as infrared sensors.

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. The rotating disk receives air blown downwardly through the lower aperture and redirects it radially outwardly through the openings in the side of the grille, such that airflow becomes horizontal and parallel to the ceiling, so that the air flow slows and the air becomes gradually dispersed throughout the entire room. The device can also be mounted over a through-wall air duct outlet by using a duct extension.

Methods and systems are provided for air conditioning, capturing combustion contaminants, desalination, and other processes using liquid desiccants.

A dilution ventilation control system for use in a one-pass, critical environments comprising: one or more one-pass, critical environments comprising, a variable source of supply airflow volume, an exhaust for completely exhausting the airflow volume supply from the critical environment and from a building comprising the critical environment through one or more exhaust ducts; and at least one an airflow control device provided in one or more of the ducts to vary the exhaust airflow volume from the critical environment; a facility monitoring system comprising at least one air contaminant sensor for sensing at least one air contaminant of the critical environment; a signal processing controller that generates one or more airflow command signals based at least in part on at least one sensed air contaminant; and a critical environment airflow controller that uses the airflow command signal to at least partially control the critical environment's supply and exhaust airflow volumes.

A method and system of deflecting air circulated in a data center room are disclosed. A method for controlling air circulation within a room having an aisle between racks with computer systems mounted thereon comprises supplying cooling air to computer systems in the racks via holes in a floor of the room and using a deflector to reduce flow of cooling air along the aisle toward an air intake of a cooling unit without passing the computer systems.

A refrigerator is provided with an airflow passage for an ice making compartment of the refrigerator. In the refrigerator, a main body has an opened side, and a door selectively closes the opened side of the main body. An ice making compartment is formed in the door, the ice making compartment being insulated from the outside and being kept at a low temperature. A duct is formed in the main body for exchanging cooling air with the ice making compartment, and a cooling air passage is formed at an outer surface of the ice making compartment to connect the duct with the ice making compartment. A switching unit closes the cooling air passage when the door is opened, and opens the cooling air passage when the door is closed. With this arrangement, the cooling air can be sufficiently supplied to the ice making compartment without the penetration of foreign substance.