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4578958 |
Consumption metering system for an air conditioning system
With an air conditioning system a plurality of building areas, for which individual energy accounts have to be rendered, are supplied by a common fresh air supply and cooling installation. The...
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4571950 |
Method for controlling air-conditioner
A method for controlling an air-conditioner wherein the blowing capacity of an indoor fan for supplying air, cooled by an indoor heat-exchanger forming a part of the refrigeration system, into a...
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4572430 |
Air conditioner for vehicular seat
An air conditioner for a vehicular seat, comprising a seat formed of a support frame and an air-pervious cushioning member resting on said support frame and provided within said cushioning member...
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4560103 |
Apparatus for heating and ventilating
Apparatus for heating and ventilating vehicle compartments. For temperature control, two parallel ducts are provided. A heat exchanger is located in only one of the ducts. A separate blower is...
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4557418 |
Energy conservation conditioned air system
A method and system for distributing heated or cooled air from a central pressurized source through a plurality of ducts to a number of spaces utilizing a minimum amount of energy. Each duct has a...
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4553696 |
Air conditioning apparatus
An air flow rate sensor and throttle valve which controls the opening of a duct in accordance with the detection signals from the air flow rate sensor are provided in a control duct between a...
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4546917 |
Temperature and hygrometry control and regulation interface
The interface according to the invention is intended to receive temperature SRT and hygrometry SRH regulation signals from the temperature and hygrometry regulators. It sends heating SCC and...
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4543796 |
Control and method for tempering supply air
A microprocessor based control for tempering supply air in a multi-stage temperature conditioning system. The temperature conditioning stages are normally controlled in response to a comfort...
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4543891 |
Apparatus and process for heat treatment
Apparatus and process is disclosed for heat treating of material in a furnace comprising a fan driven by an electric motor, a load sensor which senses the motor load and a speed controller...
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4537245 |
Zone air-conditioning control system for motor vehicle compartment
A portion of an air-conditioning unit is divided into two so as to provide first and second air-mixing chambers each following first and second temperature adjustment mechanisms. The temperature of...
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4535601 |
Environmental control system
An environmental control system utilizing a single moisture and dust impervious temperature probe of a multistage thermostat to both control a fogging system in a hog house or the like and other...
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4533080 |
Air terminal--air handler interface
In each zone of a variable volume air distribution system, terminal satisfaction is determined. Responsive to the determination of the number of dissatisfied terminals, the air handling unit is...
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4530395 |
Single zone HVAC controlled for operation in multiple zone arrangement
A 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 control thermostat that is...
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4528819 |
Exhaust control for cryogenic freezer
An exhaust system for a cryogenic freezer is set forth wherein the system senses the temperature of an aperture in the freezer to detect any outward passage of cryogenic vapors and based upon that...
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4526318 |
Proportional fluid exchanger and recirculator
A proportional fluid exchanger and recirculator having a damper element pivoted at its approximate balance point for thermostatically-responsive proportioning of fluid within a mixing chamber. Said...
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4523715 |
Method and apparatus for air conditioner control
A method and apparatus for controlling an air conditioner having a motor-driven blower for creating air flow through an air passage which opens into a compartment through a plurality of outlets....
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4518032 |
Temperature control apparatus for automobile air-conditioning systems
In an air conditioning system for automobiles including a temperature control apparatus having temperature setting device for setting a vehicle compartment temperature, a temperature sensing device...
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4507929 |
Method and installation for monitoring the temperature in a greenhouse
The invention pertains to a method for regulating the temperature in a greenhouse by insufflation of cooled air into the upper portion of the greenhouse, in case of overheating, and by heating of...
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4506828 |
Reversible damper means
Automatic damper means having a multiplicity of damper blades rotatably mounted in housing means to control and regulate the flow of a heating/cooling medium into individual rooms or zones served...
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4506514 |
Controlling energy in an air-conditioning system
A system for minimizing the energy consumption in a central air conditioning unit incorporating a refrigeration unit which is normally in operation to supplement or substitute for the cooling...
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4506829 |
Variable speed damper means
Automatic damper means having damper blades rotatably mounted in an adjustable housing, said blades being rotatable between open and closed positions by electrically energized motor means and...
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4498309 |
Blower control arrangement for air conditioning unit or the like
The blower of an automotive air conditioning unit is energized according to a flexible schedule wherein the maximum and minimum voltages applied to the blower motor are varied in response to a...
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4497240 |
Temperature control device for a vehicle cabin
A temperature control device for a vehicle cabin comprises a duct which communicatively connects, at least, inside the vehicle cabin and the external atmosphere; a damper provided within the duct...
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4487363 |
Bypass control system to maintain a constant air supply pressure in a HVAC duct system
A bypass control system and method monitors and controls the amount of air recirculated through a bypass duct from the air supply outlet supplied by a fan and motor from a single zone HVAC unit to...
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4487254 |
Temperature control unit for vehicular air conditioning unit
In a temperature control unit for a vehicular air conditioning unit including a blast unit and control for the blowoff temperature thereof, a control circuit is provided with a variable gain so...
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4485632 |
Control circuit for air conditioning systems
In an air conditioning system, the positions of the dampers in the outside air duct and the return air duct are changed periodically during periods of mechanical refrigeration. The temperature of...
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4481451 |
Electronically controlled positioner for pneumatic actuators
An electronically controlled apparatus for controllably positioning pneumatic actuators includes, in a first embodiment, first means for selectively flowing compressed fluid to the actuator and...
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4479604 |
Zoned control system
In this thermal system there is a central plant feeding a plurality of adjustable zone regulators which bring their respective zones to corresponding target temperatures. The system has a...
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4478049 |
Air-conditioning control for a motor vehicle
A gas sensor is provided to detect the concentration of a gas component included in external air which may be led into the compartment of a motor vehicle. When the level of an output signal from...
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4478048 |
Air sensing control system for air conditioners
A unitary air conditioner unit adapted to be mounted through a wall opening of an enclosure to be conditioned including an air sensing system operative for generating a signal dependent on the...
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4477020 |
Ventilating and heating apparatus and heat-sensitive unit
The invention relates to a ventilating and heating apparatus for rooms of particularly high headrooms. It comprises one or more air-heating units and one or more room heating units. A feature of...
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4477018 |
Control unit for a heating and/or air conditioning system for automobiles
In a control unit for a heating and/or air conditioning for automobiles with individual temperature control elements for two areas and with a common inside temperature sensor, the temperature of...
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4467706 |
Environmental control for tractor cab
An environmental control system for an enclosed cab of an off-the-road vehicle such as a tractor includes a pressurization blower for pressurizing the cab to a positive pressure with respect to...
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4462539 |
Air conditioning economizer control method and apparatus
An air conditioning economizer control method and apparatus for integrating the operation of the economizer with an air conditioning system is disclosed. An economizer position control arrangement...
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4458583 |
Air conditioner control system for automotive vehicles
In an air conditioner control system for vehicles, a first control signal generator is responsive to a first switch to energize an actuator to place the system in its inside air recirculation mode...
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4452391 |
Air regulating device
An automatic air regulating device for use in a forced air heating or cooling system whereby air vents or ducts leading to various rooms within a building may be automatically opened or closed to...
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4450897 |
Air-conditioning method and system for an automotive vehicle
An air-conditioning method and system controls the temperature of air outputted from an air conditioner outlet duct into the passenger compartment of a vehicle at a constant level, with a small...
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4449664 |
Air quantity regulating apparatus for air conditioning
An air quantity regulating apparatus for air conditioning according to the present invention has two functions one of which is a constant air quantity function and the other is a variable air...
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4441651 |
Hydraulic fan control
A hydraulic fan control for controlling air ventilation in a building having a plurality of fans operated by associated hydraulic motors which are connected in parallel and driven by a single pump...
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4437608 |
Variable air volume building ventilation system
A variable air volume ventilation system (10) is disclosed in which the output air flow from a supply fan (13), delivered through a supply duct (11) to various places within a building, is returned...
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4437391 |
Air condition control apparatus with indoor and outdoor air selection modes for automobiles
In an air conditioning system for an automobile the indoor-outdoor air change-over door is controlled by a noxious gas sensor in the outdoor air. The output signal of the gas sensor is compared by...
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4434932 |
Air-conditioner control system for automobiles
An air-conditioner control system for an automobile includes a shifting unit for shifting the direction of flow of conditioned air supplied to the vehicle compartment between a first flow direction...
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4429733 |
Apparatus for controlling blowing mode of a car air-conditioner
In an apparatus for controlling blowing mode of a car air-conditioner, a position of a shutter for changing the blowing mode is continuously changed in accordance with a control signal which...
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4426852 |
Air-conditioning control apparatus for automotive vehicles
In an automobile air-conditioning control apparatus, in accordance with a setting temperature signal and an actual temperature signal, a microcomputer controls the rotational speed of blower motors...
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4417618 |
Air-conditioner control system for vehicles
An air-conditioner control system for vehicles which is responsive to a condition in the compartment of a vehicle to move an air-flow controlling damper in an air duct. When the supply mode of...
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4408712 |
Apparatus for controlling air conditioners for automobiles
An apparatus for controlling an air conditioner for an automobile comprises: an air conditioning unit including a heater unit for heating air passing through an air supply duct and a device for...
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4408713 |
Control for automobile air conditioning system
An automobile air conditioning system is provided with a control system for controlling the flow rate of hot or cool air discharged into the passenger compartment. The air flow rate is controlled...
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4407447 |
Energy control system
An energy control system for a dwelling with a plurality of rooms is disclosed wherein said system has a plurality of occupancy sensors, with each sensor adapted to detect the presence of a human...
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4406397 |
Central air conditioning equipment
Central air conditioning equipment which performs air conditioning for a plurality of rooms, comprises a terminal air quantity control unit which is installed in order to communicate with each room...
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4399862 |
Method and apparatus for proven demand air conditioning control
A method and apparatus for proving a demand for air conditioning or heating upon startup of an air conditioning unit before the unit is allowed to effect heat transfer. A separate thermal sensing...
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