Abstract: A ventilation apparatus for forming a sterile medical area mainly includes an operation module for ventilating the air. The apparatus for ensuring the air cleanliness includes a filtering unit for filtering dusts and particles in the air and a sterilizing unit for eliminating micro organisms. The clean and sterilized air is sent into the medical area via an air outlet to form a quasi-laminar air flow pattern. By application of the ventilation apparatus, the cleanliness of the medical area can be ensured.

Abstract: A set of methods and apparatus for efficiently pressurizing and ventilating an air-supported greenhouse or other structure requiring pressurization and ventilation. A method for efficiently pressurizing and ventilating an air-supported structure comprises directing any external wind flow and external wind pressure into mechanical flow means, such as a fan, or fans in parallel, operating in the intake direction, and into the internal space of the air-supported structure and out of the internal space of the air-supported structure through internal pressure regulating exhaust means, whereby the internal space of the structure will be ventilated and pressurized with the assistance of any external wind and the reliability of mechanical flow means (fans).

Abstract: The enclosure for surveillance hardware provided herein protects the hardware from external elements and from damage. The enclosure may be configured for a node of a peer to peer surveillance architecture. The enclosure may comprise a sealed component chamber and an adjacent support chamber. The sealed component chamber may enclose the components therein in an air or watertight manner. The support chamber may comprise an airflow system and thermal conductor which regulates the temperature in the component chamber. The enclosure may be formed from a multilayer material having various protective qualities. A controller may be provided to control operation of the airflow system and thermal conductor in response to changes in temperature.

Abstract: To provide a ventilating system and ventilating system control method capable of advancing energy conservation. A controller sets a static pressure setting value based on the airflow of the system as a whole, calculated from the airflow of venturi air valves of fume hoods that are operating, and controls the speed of rotation of a fan based on the static pressure setting value and the static pressure within a main duct. Doing so enables control of the speed of rotation of the fan to be performed while ensuring the airflow of the ventilating system, thus making it possible to prevent wasted motive force of the fan, even when the airflows of each of the venturi air valves are not identical and even when the changes in resistance of the branched duct system relative to the various changes in airflow are not identical, with the result that it is possible to advance energy conservation.

Abstract: A system for pressurizing and exhausting a vented chamber is disclosed. The present disclosure includes a unitary module having two integrated valves for each supported chamber, a single inlet port for each chamber, a single vent exhaust port and a single pressurized port. In addition, a number of pressure gauge ports are provided to allow the pressure at various points to be monitored. In addition, the unitary module optionally includes a leak check port. Using this port, the operator can test the integrity of all valves within the module.

Abstract: A centralized device for the distribution and discharge of air causing the evaporation of a carrier in a number of user installations each having an intake channel and a discharge channel, comprising a single manifold for the reception, delivery and discharge of air-carrier mixture from and to the installations and a discharge fan connected to said manifold, and comprising for each installation: a device for air supply, connected to the single manifold and having a fresh air suction channel and an air supply channel, a fan connected to the air supply device, a heat exchanger connected to the fan and to the intake channel of the installation, a discharge device connected to the discharge channel of the installation and to the manifold and comprising a discharge channel, and a recirculation device comprising a recirculation channel connected to the air supply device and to the discharge device.

Abstract: A ventilation system includes a ventilation module having a heat exchanger module, an IAQ module for improving quality of air passing through the ventilation module, and a case for guiding the air that consecutively passes through the ventilation module and the IAQ module.

Abstract: A radon vent fan system includes an enclosure having an air inlet and an air outlet disposed in aligned relation to one another, and an assembly having a motor and an impeller associated therewith, the assembly retained in the enclosure. The enclosure provides a first condensate path between the air inlet and the air outlet to direct condensate substantially away from the assembly and to the air inlet, with the first condensate path being formed of a channel proximate an inner wall of the enclosure.

Abstract: A seamless wall finishing system has a plurality of wall panels which are spaced apart from an exterior wall. The spacing creates an air gap which provides an airflow passage between the exterior wall and the second surface of the wall panels. The wall panels have a mold resistant non-organic thread or yarn wall covering which is adhered to a central portion of a first surface of each of the wall panels so as to define a pair of uncovered areas on opposite sides of each of the plurality of wall panels such that when a first of the plurality of wall panels is mounted adjacent a second of the plurality of wall panels a vertically extending seam is created which is filled with a seam tape made from the mold resistant nylon yarn wall covering. A method of assembling the modular basement wall finishing system is also provided.

Abstract: A rooftop device and method for collection of heated air for recirculation and/or ventilation. The rooftop device supplements cooling of roof structures and supplements building heat systems. A roof cap including an air passage is connected to air outlets disposed within the roof structure of a building and to air passages formed by panels mounted over the surface of a building's roof. The roof cap is connected to a vent which either exhausts air to the atmosphere and/or recirculates air to a building air handling system. Air flow within the device is enhanced by a fan disposed within the device.

Abstract: A system and method are provided which capitalize on heating and air conditioning ductwork to draw fresh air through a house and cool the attic. Outside air enters through open windows and is drawn into return air vents. A blower fan, which is housed within the duct assembly or an air handling unit, draws air through the return duct work and exhausts into an exhaust duct. A damper in the exhaust duct has an exhaust position and a return position. In the exhaust position, air exhausts through a vent in an attic space, where the attic space is vented to the outside. In the return position air continues to the heating and air conditioning unit. The present invention provides a means to direct the fresh air flow through a house using return vents while cooling the attic space without the use of an attic fan.

Abstract: A ventilating apparatus is disclosed, by which an installation of the apparatus is conveniently facilitated. The present invention includes a blower device supplying an outdoor air to an indoor space and discharging an indoor air to an outdoor space, a heat exchange unit performing heat exchange between the outdoor air supplied to the indoor space and the indoor air discharged to the outdoor space, and a case having a first chamber receiving the heat exchange unit therein and a second chamber receiving the blower device therein to communicate with the first chamber.

Abstract: The invention provides to a cooling system and a method of cooling an engine-driven generator. The engine-driven generator includes an engine, a current generator, and a housing. The engine includes an engine air intake, and the current generator includes a generator air intake. The housing includes a first outlet, a second outlet, a first air passageway, and a second air passageway. The first air passageway is in communication with the second air passageway. The second air passageway partitions air into a first stream supplied to the engine air intake and a second stream supplied to the generator air intake. The first stream exits through the first outlet, and the second stream exits through the second outlet.

Abstract: A system and method for determining “real time” air leakage from a duct involves an airflow meter for taking airflow measurements at the inlet and at the outlet of the duct. Also included is a base fan that operates in three different modes to simultaneously vary an enclosure pressure at the inlet and outlet. This is done while a duct fan, inside the duct, is operated to continuously move air through the duct. A comparison of airflow measurements at the inlet, or at the outlet, under the three base fan operational modes will respectively identify whether leaks are present in the duct, upstream or downstream from the duct fan.

Abstract: A head-side inflow/outflow unit (60) and a foot-side inflow/outflow unit (70), which have a respective outlet opening (61, 71) for providing a supply of conditioned air to a sleeping compartment (11) within a capsule main body (20) and a respective inlet opening (62, 72), associated with the outlet opening (61, 71), for drawing in internal air of the sleeping compartment (11), are provided. The air-conditioning capacity of conditioned air supplied through each of the outlet openings (61, 71) is controlled such that the temperature of conditioned air supplied through the outlet opening (61) of the head-side inflow/outflow unit (60) falls below the temperature of conditioned air supplied through the outlet opening (71) of the foot-side inflow/outflow unit (70).

Abstract: An air handler that provides for noise reduction without reducing the pressure of air supplied to a space below minimum levels. The air handler includes a plenum, which forms a passageway for air through the air handler; the plenum having a return side and a supply side, a fan positioned in the plenum to move air through the plenum, the fan having a suction side and a pressure side, and a conditioning apparatus in the plenum for conditioning air passing through the plenum. The air handler further includes a sound-attenuating panel, which has a first side and an opposed second side and is positioned in the plenum so that the panel extends at least partially across the plenum. The panel is configured and positioned to interact with the flow of air in the plenum to attenuate sound. The fan provides a pressure boost to air flowing through the plenum to counteract a pressure drop resulting from interaction between the air and the panel in the plenum and the conditioning apparatus.

Abstract: A ventilator device for a freight container configured to prevent the ingress of water into the cargo tank interior. The ventilator device comprises a floatation-based valve configured to shuttle backwards and forwards in response to contact with water. The valve acts to open and close the air flow passageway through the device and is mounted over the air flow vents of the container. A manual override actuator may be provided to manually open and close the valves.

Abstract: A method of protecting a pre-defined, at least partially open area, such as a outdoor deck, patio or gazebo, from mosquitoes and other biting insects by removing the scents emitted by humans and pets that occupy the pre-defined area. The scents (Carbon Dioxide, Lactic Acid, as well as other body odors and scents) from humans and animals are either vacuumed and exhausted to an area away from the pre-defined area, or pushed out of the predefined area, thus making it difficult or impossible for a mosquito or other biting insect to identify that humans or pets are occupying the pre-defined area. This method is environmentally friendly, does not emit chemicals or poisons, and allows the occupants of the protected, pre-defined, unenclosed area to enjoy the out of doors without having to have windows, roofs, or screens obscuring airflow and the view of the landscape or heavens.

Abstract: Displacement ventilation systems are generally poor performers when it comes to heating. The instant patent application discusses devices and systems for improving heating performance while retaining the benefits of displacement ventilation without wholesale co-location of independent space conditioning systems.

Abstract: A sealed ventilation duct for an HVAC system includes a sheet of flexible material incorporating an insulated bonding sealer and folded so as to be self-locking. The insulated bonding sealer adheres the opposing longitudinal edges together to maintain the desired shape of the duct and improves the energy efficiency of the HVAC by reducing the overall thermal conductivity of the duct network. The insulated bonding sealer is applied proximal an edge of the sheet of flexible material which is folded so as form a duct. A method of manufacturing a duct is further included.

Abstract: A solar heating system for a building and other architectural structures including a solar heating system. The solar heating system comprises a solar heating module with an enclosure of panels bounding a plenum. An interior panel is disposed inside the enclosure. A collector panel, which is separated from the interior panel to define a heating chamber, is exposed to, and heated by, solar radiation. Outside air enters the heating chamber though passages in the collector panel, where the air is heated by heat transferred from the collector panel. An air-moving device is coupled with an air outlet from the plenum. The air-moving device applies a negative pressure in the heating chamber effective for drawing the outside air through the passages into the heating chamber and for withdrawing the heated air from the heating chamber through a delivery opening to the plenum for subsequent removal through the air outlet.

Abstract: An apparatus, system, and method for improving the provision of air conditioning, is disclosed. The system and method optimize air flow and static pressure for decreased energy consumption, and may include a cabinet and a separation barrier. The cabinet may be operative to house a plurality of any type of plug fans, including for example, AC plug fans and/or electronically commutated (EC) plug fans. The separation barrier is operable to separate or isolate the EC fans from one another. The system may include any of a floor-mounted, raised-floor, computer room, precision air conditioner and/or data center, where the EC fans may be fixedly disposed within the cabinet. The system may also include a V-shaped coil having a substantially open end operable to receive an air flow and a substantially closed end, with a fan operable to receive the dispelled air flow from the V-shaped coil.

Abstract: A system for providing an airflow to an enclosure associated with a power source may include a power source enclosure configured to substantially enclose a power source and a cooling package located external to the power source enclosure, including an airflow provider configured to produce an airflow through the cooling package. The system may further include an airflow redirector, configured to receive a portion of the airflow produced by the airflow provider, wherein the airflow redirector is also configured to redirect the portion of the airflow such that the portion of the airflow is provided to the power source enclosure.

Abstract: A protective bed includes a shield comprising bullet-proof and impact resistance material that surrounds a metal frame. The shield operably separates to provide access to an interior sleeping area. Quick access doors are located on either side of the bed. A ventilation system provides for climate control as well as filtering harmful substances from the air. A rebreather scrubs carbon dioxide from air within the unit to allow a user to close the unit to outside air.

Abstract: A portable device that is placed between the ambient air outside an existing enclosed space and the existing enclosed space that pulls the ambient air through an interchangeable array of air cleaning modules and delivers the cleaned air from the air cleaning modules into the existing enclosed space. The air cleaning modules are disposed outside the existing enclosed space so that only cleaned air is drawn into the existing enclosed space. The air cleaning modules can also be capped for easy and safe disposal after use. The air cleaning modules are in fluid communication with an electric fan that is disposed inside the existing enclosed space through an air flow inlet that is part of an expandable window insert. Accordingly, the cleaned air delivered to the existing enclosed space provides its inhabitants with clean breathable air and increases the air pressure in the existing enclosed space which prevents contaminated air from the external environment from entering the existing enclose space.

Abstract: A device to prevent indoor release of carbon monoxide and smoke from indoor combustors (stoves, furnaces, fireplaces, etc.). The device is based on a discovery that safe operation of indoor burners requires the air pressure in the room housing the burner to be relatively high in order to prevent generation of reverse chimney flow and indoor release of exhaust gas (smoke and carbon monoxide), which are dangerous to building occupants. This device solves the problem by increasing the building internal pressure.

Abstract: A device comprising a rotor and fan rotatably mounted on a shaft which is rigidly fixed relative to a vehicle surface. The device is fixable on a vehicle surface by means of two clamping portions which are moveable towards each other along the shaft to press against a surface between them.

Abstract: A fan unit centrally located within a crawl space includes a fan, a fan motor, an inlet grill, and an outlet grill. A timer connected in the power supply activates the fan motor at periodic predetermined time intervals to move the crawl space air through the fan unit. The fan unit is located and orientated to create a negative pressure to pull air into the crawl space through wall inlet vents and to also create a positive pressure to force air out of the crawl space through wall outlet vents. An outside humidity sensor can be used to insure the outside air has a lower percent humidity than that desired in the crawl space and an inside humidity sensor is used to turn the fan unit off if the crawl space humidity is below an acceptable limit. A temperature sensor is used to turn the fan unit off when the crawl space air temperature gets too low.

Abstract: A modular heat recovery ventilation system includes a modular heat exchanger and a modular apparatus spaced from the heat exchanger for delivering both fresh air and exhaust air to the heat exchanger. The apparatus includes separate blowers for generating two separate air streams. The apparatus includes an access plate at the bottom thereof allowing access to the interior of the enclosure of the apparatus through a ceiling.

Abstract: In order to heat external air in a building shell and/or in a building more effectively, the present invention suggests a method for guiding external air in a building shell and in a building, an inner gap being separated from an outer gap by a permeable layer in the region of the building shell. The external air enters the outer gap, the external air reaching an inner gap through the permeable layer and their rising into an upper region of the building shell and/or at least partially sinking into a lower region of the building shell, the external air which has sunken into the lower region of the building shell being guided into the roof region of the building before it is then supplied to a heat pump.

Abstract: A modular direct flow clean air delivery apparatus is disclosed that is particularly adapted for use in restaurants, banquet halls, meeting rooms, offices etc., where cigarette smoke and other pollutants need to be efficiently removed from the air in the room. The filtering and air moving apparatus may be mounted above a false ceiling in a whole room, or any part of a room, and includes remotely located air intakes and supplies, high capacity minipleat V-bank filters, and backwards curved impeller blowers mounted in the duct work between the intakes, supplies and the filtering apparatus for utmost efficiency and uncompromised air movement in a room. The modular apparatus may also be suspended from high ceilings with the use of rigid ductwork.

Abstract: Energy saving in indoor air conditioning is achieved by combining indoor air vertical convection producing means and indoor air conditioning means.

Abstract: A modulator transportable collective protection system for the decontamination and containment of personnel in a toxic free area. A contamination containment area is provided through which personnel are decontaminated prior to entering the toxic free area. The migration of contaminants is prevented by causing a purge of clean filtered air from the toxic free area to the contamination control area and to the exterior environment. A blower and filter unit provides air to the toxic free area to maintain an over pressure therein, ensuring that all entry to the toxic free area is through a flow of clean air.

Abstract: A supply air system for supplying air e.g. into a machine room. The supply air system comprises a supply air unit (12), to which means are connected for supplying the supply air from the outside air to the internal space, and an air treatment unit (14) in which means (58, 64) are arranged for treating the air supplied into the internal space. The units are interconnected by at least one duct (16, 16′), equipped with a blower. The supply air system further comprises an air distribution plate or the like for distributing the treated air into the machine room. The above-mentioned units are mounted on top of each other, so that the supply air unit (12) is arranged above the air treatment unit, so that an air chamber (20) for the treated air is formed between said units. At least a part of the air chamber borders to said air distribution plate (18, 18′).

Abstract: Method to operate a combustion device in a house or similar building, with fossil fuel furnaces, such as wood or oil furnaces. Outdoor air is supplied to a heat exchanger that is connected to the smoke tube of the furnace, in such an amount that an interior excess pressure is created, as excess air is led out of the interior of the building through one or more exhaust openings, especially exhaust devices, which are located at low places in the building at its outer side. This offers better combustion efficiency, better energy-utilization and a more uniform temperature in the building. A device for operating the method, comprises a fan (23) which takes in air from an inlet (19) near the outer walls of the building, through a tube (24) leading to the furnace, with a heat exchanger (33, 34) enclosing some of the smoke tube (18) of the furnace (17). The fan (23) is dimensioned and operated to create an overpressure in the building.

Abstract: A combination bath fan, register box, air conditioning and heating boot requires one opening on the wall or the ceiling of the bathroom, thus reducing the installation and maintenance costs associated with the ventilation of the bathroom. The combination includes a trim kit or assembly which is adapted to be fitted into a rough-in kit or assembly. The rough-in kit or assembly, typically mounted onto a building stud during the early phases of the building construction, has an air outlet which is connected to the outside air and an Inlet for receiving conditioned air to be distributed within a confined space. The trim assembly or kit is installed in the rough-in assembly. Louvers are provided around the perimeter of the face plate of the trim assembly to dispense conditioned air from the air inlet to the confined space with the appropriate air gradient. Air flow through the louvers is controlled using one or more slidable dampers mounted above the louvers.

Abstract: A portable and disposable operating environment including at least one substantially flexible material panel which is removably secured to a rigid support so as to define and drape over an operating area. The portable and disposable operating environment also includes at least one flow through passage which is structured to receive a supply of purified air therein and direct it into the operating area defined by the flexible material panel. The purified air is structured to continuously flow into at least one flow through passage defined in the flexible material panel so that there is continuous sterile air circulation within the operating area defined thereby.

Abstract: Apparatus and method for removing stale air from a residence or other enclosed space, and replacing that air with fresh air from outside the enclosed space. Stale air outlets are placed at the ceiling in one or more locations throughout the enclosed space and ducts connect those outlets to an air vent elevated in relation to the stale air outlets. An inlet air passage extends between a fresh air inlet located outside the enclosed space, and the air return side of a forced-air heating/cooling unit in the enclosed space. Warm air rises to the ceiling within the enclosed space, increasing in pressure and flowing through the stale air outlets to the relatively lower-pressure outside air. This air flow induces an inward flow of fresh air into the system. The outgoing and incoming air flows move through a heat exchanger, allowing thermal recovery of heat due to differential temperatures between the two air flows.

Abstract: A system and method for maintaining elevator use during a fire includes a blower and a damper at opposite ends of an elevator shaft to create a full volume current of fresh air that engulfs a conventional elevator car traveling between floors. The unidirectional airflow provides a curtain of air that "washes" any smoke away from the exterior of the elevator car. When the car stops at a floor, the damper closes to force the fresh airflow onto that floor. Fresh air is chosen from one of several fresh air supplies by sensing the quality of the air at the supplies.

Abstract: A ventilation system for a multi-storey building, which system comprises a ventilation apparatus mounted on a roof and provided with fans for generating an inlet air flow and a distributing channel for supplying the inlet air flow to various intermediate levels of the building. A service shaft of the building serves as an inlet air flow channel, which shaft forms a flow path for the inlet-air flow directed from the fans downwards, whereby the service shaft has deflecting means for passing a part of the air flow to each intermediate level of the building.

Abstract: A multi-compartment outer housing, positioned in an ambient fluid having an ambient pressure P, has a compressor developed fluid flow through the outer housing compartments. A multi-chamber inner housing is positioned in a housing compartment having a fluid pressure greater than the ambient pressure P. This inner housing has a sealed equipment chamber, a still-fluid chamber, and an optically transparent wall between the equipment and still-fluid chambers. The still-fluid chamber has a restricted port at its distal or lee end which places the still-fluid chamber in fluid communication with the housing compartment. The inner housing is oriented relative to a fluid egress port in this housing compartment so that the optically transparent wall, the equipment chamber and the fluid egress port are placed in a line-of-sight alignment through the restricted port of the still-fluid chamber.

Abstract: In a composting process, a heat conductive ventilation hood overlying a compost pile undergoing active composting. The hood is shaped so that process air emanating from the pile contacts the undersurface of the hood while ambient outside cool air is caused to traverse the upper surface of the hood. As a result of this heat exchange arrangement process air is dehumidified while concomitantly the ambient air is heated. The hood is pitched to cause condensate to run down its surface and not to drip. Warmed ambient air is used to heat the composting facility and dehumidified process air and condensate is reused in the composting process.

Abstract: A cage ventilation system for use in isolating a plurality of cages from an uncontrolled environment is provided, including a frame adapted to support cages in a plurality of vertically spaced shelves and an enclosure isolating all supported cages from the uncontrolled environment. A source of air from the uncontrolled environment is connected to the interior of tubes supported above each shelf in the frame, where each of the tubes has an axially disposed opening for outletting air over substantially the entire length of the associated row therebeneath. Each tube includes an interior opening which, in a plane perpendicular to the axial direction of the conduit, has an area which is less than the area of the outlet opening. The enclosure also includes an air outlet.

Abstract: An air ventilating system for use to ventilate and dehydrate and dehumidify the insulation immediately under the roof structure. The system includes an air intake member, to draw in relatively dry air, generally located above the roof surface, and a central distribution member, in the form of a plenum, disposed above or below the roof structure, and a plurality of radiating pipes that lead from the distribution plenum member, and which are located above, below or at the same level as the insulation layer under the roof structure, with such distribution pipes having a plurality of small openings therein to disperse air to the surrounding insulation layers for purposes of aerating same to remove moisture from the insulation.

Abstract: A knock-down sound attenuating system (10) is provided as a portable enclosure having significant sound attenuating properties, while still being easily assembled and disassembled. The knock-down sound attenuating system (10) includes a plurality of sound attenuating wall partitions (14,16) whose longitudinally extended end portions have at least one longitudinally extended recess (78) formed therein. System (10) further includes a coupling gasket (50,70) having at least a pair of opposing projecting members (52 and 54), (74 and 76) for receipt within a recess (78) formed in a respective one of the wall partition end portions. Coupling gaskets (50,70) simultaneously provides both an interlocking between adjacent wall partitions (14,16) and an acoustic seal for the interface therebetween. To secure one wall partition (14,16) to another, system (10) further includes a flexible coupling system (18) comprising a strap-like member (28) coupled adjacent a longitudinal side of a partition (14).

Abstract: A fluid transmission conduit welding habitat is provided, having an outer air supportable arcuate dome which is mounted over a point to entrap welding slag, sparks, and the like. A fire-resistant shield is disposed around the interior of the dome. Air supplied to the dome for selectively suspending the habitat. A conduit, filter, or the like is provided through the top of the dome to permit discharge of smoke including particulate matter resulting from the welding procedure. The air supply may be in alignment with the smoke discharge whereby the supply of air forms a carrier fluid for transmitting the smoke and particulate matter out of the dome.

Abstract: A ventilation control apparatus for use with a building ventilation system in a building. The building ventilation system including input and outlet vents and a fan. An opening is formed in the ceiling of the building for introducing ventilating air flow into the building from the input vent through the opening and out through the outlet vent. The ventilation control apparatus includes a movable baffle and may have a baffle counterbalance attached to the movable baffle. The movable baffle is positioned under the opening for regulating air flow through the top channel into the building. The counterbalance, if used, is attached to the movable baffle and weighted for closing the movable baffle a desired distance relative to the top channel when the fan is not operating and for controllably regulating movement of the movable baffle relative to the top channel when the fan is activated to create a pressure drop across the top channel. The pressure drop creates a force which moves the movable baffle member.