| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 454228000 | HAVING FORCED RECIRCULATION | 43 |
| 20100105310 | ZERO NET ENERGY SYSTEM AND METHOD - A system and a method regulate temperature in a building using an air inlet at a level beneath a space for habitation within the building (e.g., living areas in a residential building, or work areas or offices in a commercial building). The air pulled into the air inlet creates an air flow into the building that is received into a thermal storage plenum, which allows the air flow to mix with a substantial air mass accumulated in the thermal storage plenum. The air in the thermal storage plenum is circulated throughout the space for habitation and recycled back to the thermal storage plenum through, for example, a return duct. Such a return duct may be provided by a stairwell. A relief vent may be provided at a level above the space for habitation for the air flow to exit the building. The quantity of air flowing through the air inlet and the relief vent may be controlled using a control system which open the air inlet and the relief vent simultaneously. The temperature of the air circulated in the space for habitation may be regulated by a roof-mounted heat pump. | 04-29-2010 |
| 20120009863 | FAN - A fan for a ventilation system has a motor, a motor speed control unit and a controller arranged to control the motor to maintain the quantity of air flowing through the system constant. The controller compares the actual motor current with an expected motor current for the fan operating at the desired air quantity and motor speed to determine an actual system operating condition. When the difference between the actual motor current and the expected motor current is greater than a preset range, the motor speed is adjusted to a new motor speed determined based on the actual system operating condition. The system operating conditions may change due to changes in the static pressure of the system such as changes to the ventilation ducting or external wind pressure. | 01-12-2012 |
| 454229000 | Including automatic control means | 13 |
| 20080280552 | BLOWER EXHAUST BACKFLOW DAMPER METHODS - Methods for preventing exhaust backflow into a blower are disclosed. Embodiments may include a blower system with an invertible blower chassis having a blower exhaust to direct airflow from the blower chassis at an airflow angle. The system may also include a backflow damper frame attached to the blower chassis and positioned to receive airflow from the blower chassis and one or more vertical damper vanes rotatably attached to the backflow damper frame. Each damper vane may freely rotate between a first, closed position and a second, open position. The damper vanes may block airflow into the blower exhaust when in the closed position and may freely rotate to a position where the damper vanes are substantially parallel to the airflow from the blower exhaust. The damper vanes may each include a vane pin to rotatably attach to frame holes of the backflow damper frame. | 11-13-2008 |
| 20080299890 | APPARATUS AND METHOD FOR VENTILATING AND COOLING ENCLOSURES DURING AN ELECTRICAL POWER FAILURE - An auxiliary cooling system is provided, which can be driven by hydraulic power and can be capable of actuating ventilation fans, normally operated by electrical power, when electrical power becomes unavailable, or when electric motors become inoperable. This system can be used as part of a method, wherein voltage can be detected by detectors and transmitted to a monitoring unit. The monitoring unit can make automatic decisions, based on the received detections, concerning whether to turn on or off backup electrical generators, and whether to turn on or off the hydraulic auxiliary cooling system. | 12-04-2008 |
| 20090253364 | Rechargeable fire containment and smoke extraction system - A battery operated smoke detection and smoke extraction system for use within a building with walls and ceilings. The system detects the presence of smoke, and provides means to contain fires within the area of origination. The system feeds positive airflow to a fire by extracting smoke into a dedicated ductwork system, whereby it is exhausted outside through the building envelope in a confined manner. The system decreases the possibility of fire back draft occurring. The system is comprised of a modified smoke detector, which activates a fan installed in a multi port manifold. Individual dedicated ducts, each serving individual rooms, are connected to the manifold. Each duct has a ceiling mounted back draft damper, for energy efficiency. The manifold is provided with a chimney and a decorative spark arrestor chimney termination. The system is powered by means of rechargeable batteries within a fireproofed recharging receptacle. | 10-08-2009 |
| 20110212679 | FAN ARRAY FAN SECTION IN AIR-HANDLING SYSTEMS - A fan array fan section in an air-handling system includes a plurality of fan units arranged in a fan array and positioned within an air-handling compartment. One preferred embodiment may include an array controller programmed to operate the plurality of fan units at peak efficiency. The plurality of fan units may be arranged in a true array configuration, a spaced pattern array configuration, a checker board array configuration, rows slightly offset array configuration, columns slightly offset array configuration, or a staggered array configuration. | 09-01-2011 |
| 20120270493 | Packless Silencer for a Venturi Control Valve - A packless silencer for a Venturi control valve being a generally rectangular enclosed housing formed by four side walls and having an intake opening and a discharge opening. Four perforated baffles for each of the side walls are positioned inside of the housing, extend the length of the housing and are offset from the side walls to create an empty baffle space between the perforated baffles and the side walls the ends of the baffle space are covered by end caps. | 10-25-2012 |
| 20130090051 | ERV GLOBAL PRESSURE DEMAND CONTOL VENTILATION MODE - An energy recovery ventilator includes first and second blowers, a pressure transducer and a controller. The first blower is configured to direct a first air stream into a first zone of an enclosure. A second blower configured to direct a second air stream into a second zone of the enclosure. A pressure transducer is configured to determine internal air pressure within the enclosure. A controller is configured to control the first blower and/or the second blower in response to the internal air pressure. | 04-11-2013 |
| 20130189916 | RACK SYSTEM AND VENTILATION APPARATUS THEREOF - In a rack system and a ventilation apparatus, the rack system includes a closed rack, a chassis and a cooling device. The chassis is installed in the closed rack; the cooling device is contained in the closed rack and disposed adjacent and parallel to the chassis; the cooling device and the chassis jointly separate an interior space of the closed rack into a cold air channel and a hot air channel; the cooling device has an air outlet and an air inlet, and the air outlet is corresponsive to the cold air channel, and the air inlet is corresponsive to the hot air channel. The cold air channel and the hot air channel can uniformly dissipate the heat generated by stacked servers inside the chassis, so that the rack system has high energy efficiency. | 07-25-2013 |
| 20130273826 | APPARATUS FOR REDUCING AIR FLOW THROUGH AN OPENING BETWEEN ADJACENT ROOMS - A system for maintaining thermal separation between first and second adjacent rooms or spaces. The system includes a vestibule with at least a first compartment, and other embodiments may include two or more compartments, such that the vestibule provides a passageway between the first and second rooms. At least one blower draws air from the first room through an air intake, and back into the first room through an exhaust. The system further includes an exhaust port from the first compartment in fluid communication with the exhaust, to exhaust air from the first compartment into the first room. During operation, a vacuum is formed within the first compartment that provides thermal separation between the first and second adjacent rooms. | 10-17-2013 |
| 20140065939 | METHOD AND APPARATUS FOR PASSIVELY CONTROLLING AIRFLOW - A system and method for providing a substantially constant volume exhaust or ventilation air terminal system is shown for controlling exhaust and/or return airflow rates in a system having a central fan or ventilator. The system and method permits zone-by-zone or area-by-area airflow regulation or control in non-demand areas in response to a demand or call for ventilation in demand areas. In one embodiment, the system employs at least one constant airflow controller or regulator situated in a damper. In one embodiment, a terminal houses a plurality of sub-ducts each having an airflow regulator. At least one of the sub-ducts has a damper. When the damper is open, a maximum airflow through the terminal is a sum of maximum airflow permitted by the regulators. | 03-06-2014 |
| 20140099872 | VENTILATION SYSTEM, VENTILATION METHOD, VENTILATION CONTROL DEVICE, AND NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM - The ventilation system is a system for ventilating a building and comprises an air supplier/exhauster comprising air supply function and exhaust function and a ventilation control device controlling the operation of the air supplier/exhauster. Upon operating the air supplier/exhauster, the ventilation control device determines which the air supplier/exhauster conducts, air supply operation or exhaust operation, based on wind information regarding the outdoor wind. The ventilation through the ventilation passage from the air supplier/exhauster to a vent provided in the building is conducted when the air supplier/exhauster conducts air supply operation. Alternatively, the ventilation through the ventilation passage from the vent to the air supplier/exhauster is conducted when the air supplier/exhauster conducts exhaust operation. | 04-10-2014 |
| 20160131380 | Method and System for Eliminating Air Pockets, Eliminating Air Stratification, Minimizing Inconsistent Temperature, and Increasing Internal Air Turns - A method, a method for designing a system, and a system for creating substantially continuous circulation within a volume to be managed using one or more devices that are neither HVAC-based nor duct-based. The method includes one or more devices continuously drawing air, continuously processing air, and continuously pushing air through at least three exit zones. The method for designing a system includes determining the approximate volume of the facility or the approximate volume of air to be managed within the facility, determining the location of objects with an impact on air flow or temperature of the facility, and determining the number, type, and preferred locations of the one or more devices to install in the facility. The system includes one or more devices continuously drawing air, continuously processing air, and continuously pushing air through at least three exit zones. | 05-12-2016 |
| 20170234570 | Automatic Displacement Ventilation System with Heating Mode | 08-17-2017 |
| 20220133939 | SYSTEM FOR HYGENIC GROUP EXERCISE - This invention relates to a combination of machinery, electronics and building space design using specialized disinfection systems, air filtration, audio-visual communication, electronic controllers and isolation booths in a manner that mitigates the risk of disease transmission among simultaneous and serial users of the shared space. | 05-05-2022 |
| 454230000 | Forced recirculation alone | 23 |
| 20080227381 | COLUMNAR AIR MOVING DEVICES, SYSTEMS AND METHODS - Air moving device includes a housing, an impeller in the housing for generating a downward air flow, and vanes in the housing in close proximity to and a selected distance below the impeller to straighten the air flow. The device produces an air flow that substantially remains in a column over a substantial distance. The method includes producing an air flow that substantially remains in a column over a substantial distance and directing the air flow from the ceiling towards the floor to provide temperature destratification of the air in an enclosed space. The method also includes directing warm air from the ceiling to the floor and storing heat in the floor, apparatus on the floor and ground under the floor. The stored heat is released when the ceiling is cooler than the floor. | 09-18-2008 |
| 20080268765 | Recirculated self-heating air delivery system to warm the body - A conduit for delivering warm air to the body with a multiplicity of warm air delivery holes arrayed along extensive tubing down extending over the arms and legs of the wearer. The warm air is derived from the user's expired air as one exhales into a coupler that fits the mouth of a human or coupled to an over the nose and mouth facemask. The exhaled air travels through the mouthpiece or mask and into the tubing to be delivered to the extremities through air dispersion holes arrayed along and around the tubing. | 10-30-2008 |
| 20090023376 | DAMPER FOR POSITIVE PRESSURE AIR CLEANER - The invention is a damper that closes off supply duct air when the unit is off to prevent air from exiting through the outlet, and opens when the unit is on to allow room air and/or supply duct air to exit through an outlet. The damper may be either motorized or mechanically biased. | 01-22-2009 |
| 20090137199 | METHOD OF CONSTANT RPM CONTROL FOR A VENTILATION SYSTEM - A method of constant airflow control for a ventilation system is disclosed. The method includes various controls to accomplish a substantially constant airflow rate over a significant change of the static pressure in a ventilation duct. One control is a constant I·RPM control, which is primarily used in a low static pressure range. Another control is a constant RPM control, which is primarily used in a high static pressure range. These controls requires neither a static pressure sensor nor an airflow rate sensor to accomplish substantially constant airflow rate while static pressure changes. This is because these controls use only intrinsic control variables which are electric current and rotational speed of the motor. Also, the method improves the accuracy of the control by correcting certain deviations that are caused by the motor's current-RPM characteristics. To compensate the deviation, the method adopts a test operation in a minimum static pressure condition. Also disclosed is an apparatus for conducting these control methods. | 05-28-2009 |
| 20130040548 | Fan flow synchronizer - The fan synchronizer is a small flow tube | 02-14-2013 |
| 20140065940 | VENTILATION SYSTEM AND METHOD - Embodiments of the invention provide a ventilation assembly comprising a main housing adapted for installation into standard 2′×4′ wall or ceiling construction within a building or space. The main housing can include a fluid inlet through which fluid is received within the main housing, and a fluid outlet through which fluid exits the main housing. The ventilation assembly can be installed in place of an existing ventilation exhaust fan assembly, or can be installed in a space where no ventilation assembly has previously existed. The main housing can provide support to a blower assembly, including a scroll and a blower wheel positioned within the scroll. A motor may be nestled within the scroll and coupled to the blower wheel. Electrical power can be supplied to the motor to cause the motor to rotate the blower wheel to generate a flow of fluid out of the fluid outlet. | 03-06-2014 |
| 454231000 | Having recirculating duct connecting upper and lower room air strata | 2 |
| 20110111687 | AIR DESTRATIFIER FOR SPACES - The air destratifier comprises: a casing ( | 05-12-2011 |
| 20110281516 | ENVIRONMENTAL CONTROL SYSTEMS AND METHODS OF CONFIGURING ENVIRONMENTAL CONTROL SYSTEMS - An environmental control system of a building utilizes lower vents which open into lower portions of rooms of a building, and upper vents which open into upper portions of rooms of the building. When the system is operating in a heating mode, heated air is delivered into the upper portions of the rooms through the upper vents and air is removed from the rooms through the lower vents. When the system is operating in a cooling mode, cool air is delivered into the rooms through the lower vents, and air is removed from the rooms through the upper vents. Operating the heating and cooling modes in this fashion provides the most efficient operation of the heating and cooling system. A switching unit is used to selectively couple the inlet and outlet of an air handling unit to the upper and lower vents. Alternatively, special duct units with both upper and lower openings can be attached to the inlet and outlet of an environmental control system, and the air can be selectively switched between the upper and lower openings. In some embodiments, heated and cooled air is delivered into a room through a fixed vent that is positioned in either the upper or the lower portion of the room. Air is removed from either the upper or lower portions of the room through return ducts with both upper and lower duct openings. | 11-17-2011 |
| 454232000 | Having plural or branched recirculation ducts | 3 |
| 20090029640 | Air Scavenging System for Removing Heated Conditioned Air from a Computer Room - An air scavenging system for removing heated air from a computer room, comprises at least one air intake port in communication with a first duct, a plenum chamber having at least one air input to which the first duct is connected, and an air output from the plenum chamber to a return duct for an air conditioner unit which supplies conditioned air to the computer room. The air flow is induced by an electrically driven fan at the output side of the plenum chamber. At least one air intake port is horizontally oriented, and is positioned at any position in the computer room. There are at least as many inputs to the plenum as there are ducts connected to it. At least one air intake port may be vertically oriented and is mounted to a rack which is hotter than the other racks. | 01-29-2009 |
| 20140273793 | HEAT TRANSFER SYSTEM FOR WAREHOUSED GOODS - Systems and methods for airflow management around palletized cases of goods in a warehouse storage facility are provided, in which airflow around each individual layer of cases is facilitated while airflow “spillage” around the sides, top or bottom of pallet assemblies is minimized or eliminated. One exemplary device for such airflow management includes palletized product spacers disposed between respective layers of vertically stacked cases, in which the product spacers facilitate a substantially unidirectional longitudinal airflow. Another exemplary airflow management device is a series of automatically adjustable air dams disposed at the tops of respective pallet assemblies which prevent air spillage and establish intermediate air manifold spaces. Yet another device is a lateral pallet spacer prevents direct abutment of the side surfaces of neighboring pallet assemblies and thereby ensures that the air manifold spaces are in fluid communication with the spacers of multiple pallet assemblies. | 09-18-2014 |
| 20150292753 | AIR CONDITIONER UNIT, AIR CONDITIONING SYSTEM, AND AIR CONDITIONING CONTROL METHOD - An air conditioner unit includes an air conditioner body, a first outgoing chamber, an outgoing connection section, an outgoing communication member, an outgoing port, and an outgoing port member. Through the first outgoing chamber, adjusted air flowing in from the air conditioner body is supplied to a target room. Through the outgoing connection section, the first outgoing chamber communicates with a second outgoing chamber of an adjacent air conditioner unit. The outgoing connection section is connected to the first outgoing chamber. The outgoing communication member is configured to open and close the outgoing connection section. Through the outgoing port, the adjusted air is supplied from the first outgoing chamber to the target room. The outgoing port member is configured to open and close the outgoing port. | 10-15-2015 |
| 454233000 | For use with heating or cooling means | 12 |
| 20080214099 | Air Conditioning System - An air distribution system for an air conditioning system includes an air supply and a plurality of air distribution units. The air distribution units are arranged in a side-by-side configuration. The air supply is operably connected to at least one of the air distribution units. Each air distribution unit includes a delivery feature for delivering air from the air supply through the air distribution unit and into an adjacent air distribution unit. | 09-04-2008 |
| 20100159818 | INDOOR UNIT OF AIR CONDITIONER | 06-24-2010 |
| 20130023194 | Indoor Unit of Air Conditioner - An indoor unit of air conditioner comprises: a panel body ( | 01-24-2013 |
| 20130035028 | Indoor Unit of Air Conditioner - An indoor unit of air conditioner comprises a panel body ( | 02-07-2013 |
| 20130143479 | HEATING VENTILATOR FOR BATHROOM - A heating ventilator for bathroom includes a frame, a motor mounted with fan blades, a volute casing, an air path switching plate located at the air outlet of the volute casing for switching the air outlet of a ventilator main body, a heater, and a control electric circuit mechanism for operating the motor, the air path switching plate and the heater. The air path switching plate and the heater are configured in a separate and overlapping manner in the height direction of the ventilator main body. The center line of the fan blades and a tongue of the volute casing are both offset from the center line of the main body and are located at the same side. The center line of the main body is horizontally aligned and overlapped with the center line of the air path switching plate and the center line of the heater. | 06-06-2013 |
| 20140099873 | AIR DAM FOR A DATACENTER FACILITY - A method, apparatus, and system in which an air dam is incorporated into an air ventilation stream of a datacenter to control the temperature of an interior space of the datacenter. The datacenter may include a raised floor in which the ventilation stream is injected through perforations within the raised floor. An air dam may be positioned at an entry region of the under floor plenum to obstruct the flow of air from a supply air plenum. The air dam is used to create a positive pressure across the raised floor at a substantially constant pressure distribution. | 04-10-2014 |
| 20140162543 | RECESSED PROFILE - The invention relates to a recessed hollow profile for mounting to a wall system in a wall of a building, which allows ventilation with efficient decentralised energy recovery. The invention also relates to a system for ventilating a room. | 06-12-2014 |
| 20140170953 | APPARATUS AND METHOD FOR ADJUSTING AIR PRESSURE OF ROOM - An apparatus and method for adjusting air pressure of a room. The apparatus comprises an air receive duct ( | 06-19-2014 |
| 20140235157 | DEDICATED OUTDOOR AIR SYSTEM WITH PRE-HEATING AND METHOD FOR SAME - An energy exchange system is provided that may include a heater configured to be disposed within a supply air flow path. A first pre-heater is configured to be upstream from the heater within the supply air flow path and configured to pre-heat the supply air with a first liquid that circulates through the first pre-heater. A boiler may be operatively connected to the first pre-heater and configured to heat the first liquid. The system may also include a second pre-heater configured to be upstream from the heater within the supply air flow path. A heat transfer device may be operatively connected to the heater and the second pre-heater. The heat transfer device is configured to receive flue gas from the heater and transfer heat from the flue gas to a second liquid within the heat transfer device. | 08-21-2014 |
| 20140315479 | TURBO FAN AND CEILING TYPE AIR CONDITIONER USING THEREOF - A turbo fan includes a main plate rotated by power provided from a fan motor, blades each having one end connected to the main plate to perform rotation movement, and a shroud having an inner circumferential part and an outer circumferential part, an other end of each of the blades connected to the shroud. The shroud includes a plurality of curved parts each having one side connected to the inner circumferential part and an other side connected to the outer circumferential part, the plurality of curved parts each having a predetermined curvature. | 10-23-2014 |
| 20150354841 | FAN COIL UNIT WITH SHROUDED FAN - An air handling unit for use with an air conditioning system is provided including a housing duct through which air is circulated. A vane-axial flow fan circulates air through the housing duct. The fan includes an impeller having a plurality of fan blades extending therefrom and an axis of rotation arranged substantially in-line with a flow path of the air. A heat exchanger assembly is arranged within the housing duct in a heat transfer relationship with the air circulating through the housing duct. | 12-10-2015 |
| 20180021469 | ULTRAVIOLET STERILIZATION LAMP, ULTRAVIOLET STERILIZATION MODULE, AND AIR CONDITIONER INCLUDING ULTRAVIOLET STERILIZATION MODULE | 01-25-2018 |
| 454234000 | Including unitary housing having both inlet and outlet airways | 3 |
| 20090203306 | Handling Facility and Ventilation Device - An arranging facility, a parking facility, a handling facility, and a ventilation device. A vehicle maintenance facility as the arranging facility comprises a vehicle maintenance booth as an arranging space and a forcible air supply/discharge mechanism. The vehicle maintenance booth is surrounded by side walls and a ceiling wall as partition walls on its periphery. A maintenance vehicle on which a fuel battery as an energy converter is mounted is temporarily disposed in the vehicle maintenance booth. Also, the air supply/discharge mechanism comprises an air intake device feeding air to the vehicle maintenance booth and an air discharge device discharging the air from the vehicle maintenance booth to dilute hydrogen gas leaking from a vehicle under maintenance. | 08-13-2009 |
| 20130090052 | AIR HANDLING DEVICE - An air handling device includes a fan that has a fan hub and a set of fan blades that extend from the fan hub. The set of fan blades defines a fan diameter and the fan hub defines a hub diameter. The fan has an inlet side for air intake and an outlet side for air discharge. An annular fan inlet passage is arranged at the inlet side of the fan, and an annular fan outlet passage arranged at the outlet side of the fan. The fan inlet passage and the fan outlet passage each define an outer diameter that is substantially equivalent to the fan diameter and an inner diameter that is substantially equivalent to the hub diameter. | 04-11-2013 |
| 454235000 | Having air pump means for both airways | 1 |
| 20160161134 | VENTILATOR - A ventilator comprising an air blower; a casing comprising a first wall and a second wall configured to house the air blower centrally and to define a radially decreasing volume therebetween, a circumferential gap between the first wall and the second wall configured to allow a high velocity air stream to exit and to spiral in a direction away from a structure to which the ventilator is configured to be mounted, and a central opening in the second wall configured as a suction inlet of the air blower; and a flow amplifier adjacent the casing and configured to amplify air flow through an air flow passage defined between the flow amplifier and the second wall of the casing. | 06-09-2016 |
| 454236000 | For use with heating and cooling means | 2 |
| 20100197215 | AIR FLOW IN ENCLOSED SPACES - A method of, and a system for promoting the flow of air from a lower location to an upper location, the method comprising: using heat from a heat source to provide a first heat store; and making a secondary use of heat from said heat source to power a heating device for heating an air conduit connecting said lower and upper locations; wherein said secondary use of heat from said heat source is controlled on the basis of an indicator of whether or not there is an excess of heat in the heat store. | 08-05-2010 |
| 20140187140 | HEATER FOR AN AUTOMOTIVE VEHICLE AND METHOD OF FORMING SAME - A heated seat comprising: a cushion with one or more trench areas; a heater comprising: a carrier with a periphery, the carrier further including: a first electrically functional layer that is made of a conductive material that substantially circumscribes at least a portion of the carrier; and a second electrically functional layer that is made of a resistive material; one or more electrical conductors attached to the first electrically functional layer; a trim layer that covers the cushion when the heater is placed over the cushion; and wherein the periphery includes a first side edge and a second side edge, and each side edge includes a cutout, and the cutouts are located adjacent to each other forming a neck portion; wherein the heater is attached to the cushion by placing an attachment device over the neck portion of the heater and securing one or both ends of the attachment device to the cushion so that the neck portion is pulled into the trench; wherein the neck portion is free of the second electrically functional layer; and wherein the first electrically functional layer and the second electrically functional layer form a checkered pattern. | 07-03-2014 |
