Matches 1 - 50 out of 83 1 2 >
Match Document Document Title
7578734 Unit ventilator having a splitter plate and a pivoting damper blade assembly  
An HVAC unit ventilator, particularly suited for schools and hotels, includes a single damper blade driven directly by a motor to control a supply air's mixture of return air and outside air. The...
7464560 Air conditioner for automobile  
A flow passage through which a heat exchange medium flows is formed at least at a part of each airflow duct 3 to 6 , and the heat exchange medium flowing through the passage (t) is allowed to...
7341201 Fully articulated and comprehensive air and fluid distribution, metering, and control method and apparatus for primary movers, heat exchangers, and terminal flow devices  
The described method and apparatus pertains namely to the HVAC (Heating, Ventilating, and Air Conditioning) industry, though its many functions extend into any and all forms of air-fluid movement,...
6983889 Forced-air zone climate control system for existing residential houses  
A low cost and easy to install zone climate control system for retrofit to an existing forced air HVAC system, that provides independent minute-by-minute, day-by-day, and room-by-room climate...
6976911 Method and apparatus for filtering airborne contaminants  
A method and apparatus for removing airborne contaminants in residential or commercial buildings injects filtered air into these enclosures. Prior to be injected in these enclosures, the air is...
6938626 Method and apparatus for wet-cleaning substrate  
An apparatus for wet cleaning a substrate includes a clean air supplier for supplying the clean air into a cleaning draft, a humidifier for supplying steam or mist like water drops into the...
6916239 Air quality control system based on occupancy  
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...
6844691 Ventilator having an abnormal operation indication device  
A ventilator having an abnormal operation indication device includes a power supply circuit, a central processing unit, a fan motor, and a load sensing circuit. Thus, the load sensing circuit...
6592449 Smart fan modules and system  
A fan module including: two or more individual fans, each fan having an air movement means and a motor engaged with the air movement means for accelerating air entering each of the two or more...
6496110 Rapid fire emergency response for minimizing human casualties within a facility  
A method and apparatus are described for responding to a fire emergency at a facility by analyzing a plurality of fire threat conditions to determine possible responses to a fire emergency and...
6456023 Method and apparatus to control a variable speed motor  
A method for controlling an electronically commutated motor (ECM) using an air moving system including a controller and an interface board, the interface board electrically coupled to the...
5771879 Heated makeup air system for a commercial kitchen  
A heated air makeup unit comprises a duct structure having a surrounding wall, a fan for moving air through the duct structure, and a gas burner mounted in the duct structure for heating air being...
5417275 Air circulator control apparatus and method  
An air circulator control apparatus and method of use for at least one air circulator and a climate control system having a heater and a cooler to regulate the air temperature of a vertical column...
5364025 Combination motor cooler and air aspirator for climate control system  
A combined motor cooler and air aspirator for use in a motor vehicle climate control system comprises a forced air ventilation blower motor having an inlet port for admitting a flow of cooling air...
5304094 Method of mixing cold introduced air with warmer room air  
A method of mixing introduced relatively cold air with warmer air in a room which comprises directing a stream of high-velocity very cool air from jet orifices in the room wall at adult eye level...
5236124 Apparatus for automatically ventilating buildings such as winter gardens, sun lounges, and greenhouses  
The invention relates to an apparatus for venting a building such as a greenhouse, by means of a sheet member which can be mounted in one or several openings of the building. The sheet member...
5084659 Method of operation of air cleaner  
A concentration of a given gas is detected by a gas sensor when a command signal for turning off the gas sensor is present, the concentration is stored and the gas sensor is turned off. The...
4931948 Method and system for controlling a single zone HVAC supplying multiple zones  
An improved monitoring and control system for a heating, ventilating and air conditioning (HVAC) unit which provides zone control in plural zones in which each zone includes a thermostat which...
4919327 Air-processing installation designed for the ventilation and air-conditioning of several rooms and air-processing module designed for an installation of this type  
An air-processing installation designed to ventilate and air-condition seal rooms, as well as an air-processing module designed for the making of an installation of this type are disclosed. With...
4886110 HVAC zone control system  
An HVAC system for a plurality of zones comprising an air handling unit including a blower, a plurality of heating stages and a plurality of cooling stages. The air handling unit is connected via...
4858677 Automobile air-conditioning apparatus with air blower control  
An automobile air-conditioning apparatus with air blower control air-conditions the passenger compartment of an automobile by cooling and/or heating air delivered from an air blower into the...
4860231 Calibration technique for variable speed motors  
A variable speed motor is regulated responsive to the load torque acting on the blower wheel. The load torque acting on the blower wheel is determined by means of a coast down procedure in which...
4856710 Dual air conditioner for a vehicle  
A dual air conditioner having a pair of air conditioning units for front and rear seats within the compartment of a vehicle adjusts the temperatures of air output to the front and rear seats in...
4841733 Dri-Pc humidity and temperature controller  
A temperature and humidity control system for natatoriums. The system provides a constant volume of air circulation which is used to control temperature and humidity in the natatorium while...
4830275 Temperature control of buildings  
This is a system for the air conditioning of rooms in building, which rooms are defined by concrete floor structures with hollow ducts connected in series in parallel with each other and in groups,...
4829882 Crawl space ventilation system  
A crawl space ventilation system includes an intake fan assemby (10) having a housing with an 8×15 inch tubular mounting portion (b 16), a jet-stream directing portion (30) which is substantially...
4830276 Heater system for greenhouses  
A heating system for warming the space within a greenhouse or similar structure. The heating system comprises a heater means having a heating chamber for air, mounted in a plenum chamber. The...
4819716 Advanced zone damper system  
The advanced zone damper incorporates an adjustable, spring loaded damper door control which allows any percentage up to 50% of the total air flow to pass through a locked damper door when only two...
4805835 Methods and apparatus for the control of smoke and fire in buildings  
Smoke and fire control devices and systems are disclosed, including smoke control devices which are responsive to smoke to evacuate smoke and also responsive to elevated temperatures to terminate...
4750544 Movable heat exchanger system  
A method of operating a heat exchanging system seasonally which is mounted in an air duct is disclosed. The system has means for support and movement between a first position where the heat...
4739924 Air volume regulator valve  
Disclosed is an air volume regulator valve for an air distribution apparatus for heating, ventilating and air conditioning systems having a first open position, a closed position and a second open...
4690203 Automotive air-conditioning system adapted to obviate the influence of insolation during blower start-up  
An automotive air-conditioning system includes an arithmetic unit which provides combined control signals at least on the basis of data representing room temperature, fresh air temperature, set...
4682474 Temperature responsive baffle control circuit for a refrigerator  
A circuit for controllably positioning an air baffle to control flow of air from a freezer compartment to a fresh food compartment of a refrigeration apparatus. The circuit energizes a first...
4646966 Personalized air conditioning  
An air conditioning system in a building space having side walls and a hollow horizontal partition or wall which provides a plenum for preconditioned air at substantially atmospheric pressure, a...
4623090 Automatic interior air temperature control apparatus with a dual purpose fan for use with temperature control systems in motor vehicles  
A simple and space-saving, nevertheless effective and low-noise apparatus for the interior compartment air of a motor vehicle, to impact a temperature sensor of an automatic heating or...
4576331 Booster fan and air deflector for floor vents  
A booster fan and deflector for placing over a forced air heating/air conditioning floor vent to deliver more cool air in warm weather and more warm air in cold weather. The booster fan and...
4570532 Ventilating unit for animal buildings  
A ventilating unit particularly suited for animal buildings. The unit comprises a housing with a central exhaust and an intake duct on each side. Flaps are provided for opening or closing the...
4537035 Air conditioning system  
A valve is provided that controls the type of air reaching an air conditioning blower. For example, in one position of the valve, returned, air conditioned air is continually recirculated to the...
4527734 Subzone diverter control  
A zone whose air supply volume and character is responsive to temperature data supplied from a single location in the zone is made responsive to the requirements of a subzone remote from the sensor...
4515308 Flow stabilizer for a ventilation duct  
A stabilizer for a ventilation duct includes a sensor, sensitive to a variable parameter such as temperature, which affects the flow of air in the duct. The sensor includes an opening in a return...
4513574 Low Temperature air conditioning system and method  
A low temperature air conditioning system provides primary air through smaller than normal ductwork and at a lower than normal temperature (such as 40° F.) at peak load conditions. The primary air...
4489881 Air delivery system for hospital rooms and the like  
A method and apparatus for delivering conditioned air to hospital patient rooms or clean rooms which are maintained at a higher or lower pressure level than the adjacent halls. A constant volume...
4466201 Method and an arrangement for storing organic fibrous material in a stack  
A method of and apparatus for drying stored fibrous materials is disclosed. Dry air is injected into a stack of fibrous materials via delivery tube means, and air is withdrawn from the stack via...
4437609 Automatic damper device  
The damper device of the invention comprises a paddle wheel (2) adapted to allow, by its rotation, the air streaming through the duct (1) wherein the device is mounted. A thermostat (14) senses the...
4410131 Heating and air conditioning system  
A heating system for an inhabitable enclosure having a first heating system that maintains a first temperature in the absence of persons in the enclosure and a second heating system that maintains...
4407445 Ceiling construction for a heating, ventilation and air conditioning system  
In a building having a heating, ventilation and air conditioning system, exterior walls and at least one story having a true ceiling, a suspended ceiling, and lighting fixtures occupying openings...
4372289 Flue box assembly  
An improved flue box assembly for use with the exhaust gas conduit of a heating plant is provided having a housing with at least one pivotally mounted damper plate therein. The damper plate is...
4308992 Metered-usage variable-volume air distribution system  
A system for apportioning the operating costs of a central, constant-temperature, constant-pressure, variable-volume air conditioning or heating system among its multiple users. Meters at each unit...
4259987 Linear damper system  
The damper system for controlling the flow of a gaseous fluid in a duct member is disclosed in which the combination of parallel and opposed flow characteristics is utilized to produce a composite...
4257552 Method and apparatus for controlling the flow of a temperature regulating fluid  
A closed loop control apparatus utilizes a cooling effect sensor to measure the cooling capacity of a fluid in a supply conduit connected to one or more thermal loads. The sensor includes an...
Matches 1 - 50 out of 83 1 2 >