Abstract: A room air conditioner is operable to perform heating or cooling operations in a room. Furthermore, it is possible to direct warm or cool air to selected regions of the room. For example, it is possible to carry out a distant mode of operation wherein warm or cool air is supplied to a distant region of the room, or a wide mode wherein the warm or cool air is directed across the entire width of the room. When either the distant mode or the wide mode is selected, a control mechanism of the air conditioner automatically resets the set temperature by either raising or lowering a fixed reference temperature (pre-programmed into the air conditioner controller). If a heating operation has been selected, the reference temperature is automatically increased by a predetermined amount, and during a cooling operation, the reference temperature is automatically reduced by a predetermined amount.

Abstract: A domestic air conditioning and/or heating method, particularly for apartment buildings, using an outside unit (2) and an inside unit (1) connected to one another via fluid and electrical lines (3). The outside unit (2) includes a compressor, a ventilation system and an exchanger while the inside unit (1) includes a ventilation system and an exchanger. A low pressure inside unit (1) supplies pressurized air at a pressure no higher than 8 mm and the air is bulk-fed into a false ceiling (6) forming a decompression chamber and comprises supply grills (15-17) for blowing air into each of the rooms to be served.

Abstract: A method and apparatus for conserving energy in buildings consisting of an indoor temperature sensor, an outdoor temperature sensor, a programmable electronic thermostat, and a bi-directional power ventilator. The programmable electronic thermostat contains software instructions to switch on or switch off the power ventilator during pre-determined time schedules in response to changes in the indoor and the outdoor temperatures. During a summer day-time schedule, the thermostat switches on the power ventilator in the normal flow mode to exhaust the building of hot accumulated indoor air if the indoor temperature is greater than a selected set-point temperature and if the indoor temperature is also greater than the outdoor temperature by a predetermined ratio.

Abstract: A temperature controlling apparatus adopting a fuzzy adaptation model and a method using the same are provided, in which temperatures of a plurality of positions of a refrigeration compartment are estimated in order to rapidly reach temperature equilibrium of the refrigeration compartment, by considering the operation states of a compressor and a cooling fan which directly affect the temperature of the refrigeration compartment. The temperature controlling apparatus adopting the fuzzy inference includes: a cool air discharge direction controller for controlling the rotation angle of a cool air discharge control blade; and a fuzzy inference unit for inferring peripheral temperatures of temperature sensors by taking the operational states of the cooling fan and the compressor as inputs, in order to provide the cool air discharge direction controller with information with respect to the static angle of the blades of the cool air discharge control blade.

Abstract: An apparatus for ventilating the crawl space of a structure, comprising an exhaust fan in a housing adapted to at least partially occlude an aperture in a foundation wall of a structure and oriented to, upon receiving an appropriate stumulus, exhaust crawl space air through said aperture to outside the structure, a temperature sensor and a relative humidity sensor for sensing the respective temperatures and relative humidities of crawl space air and of outside air, and for transmitting respective stimulus dependent thereon to a programmed computer, said computer also adjusting said relative humidity stimulii for temperature-dependent deviation, then determines the absolute moisture differential from said adjusted stimulii and compares said differential to a pre-set minimum absolute moisture differential parameter for ventilation activation, said computer also functionally connected to said fan for controlling the activation thereof

Abstract: A wireless remote temperature sensing and control thermostat system for regulating air ducted air conditioning systems incorporating a normal mode and a remote control mode, including a combination thermostat and radio-frequency receiver unit, a radio-frequency transmitter, and an adjustable register. In the normal mode, a reference temperature is set by the thermostat for the temperature throughout the entire air conditioned structure. In the remote control mode, the local temperature sensing and control functions of the thermostat are disabled and the transmitter unit will take over the temperature sensing at the remote site which, in turn, then will control the thermostat unit. As a result, the users will be able to more accurately control their own personal environment.

Abstract: A motor vehicle air conditioning system includes an adjustable position air inlet valve for controlling the relative proportions of recirculated air and fresh air from outside entering the system. A first sensor and a second sensor give respective measurement signals representing the inside temperature of the cabin and the outside temperature. The occupant of the vehicle can set a required value of inside temperature on a data unit, which memorizing this setting. The installation includes a processor for computing the difference between the actual inside temperature and its required value, and for memorizing at least one first temperature threshold value. The processor makes a first comparison between this first threshold value and the computed absolute value of the temperature difference, and then performs a second comparison between the inside and outside temperatures.

Abstract: A heating system that allows independent control of the temperatures within different rooms in a building by independently controlling the flow of heating fluid to each room in response to a thermostat provided in each individual room. The output of the thermostat controls the operation of a three-way valve upstream of a radiator or convector in each room. When the room temperature is at or above the setpoint for that room, the valve operates to divert all heating fluid flow through a bypass pipe or shunt extending from the valve to the outlet of the radiator or convector. When the temperature drops below the setpoint, the valve operates to resume heating fluid flow through the radiator or convector while shutting off heating fluid flow through the bypass pipe. In another embodiment, independent control of room temperature in heated air distribution systems, is effected by thermostatically controlled louvers provided at the heated air register in each room.

Abstract: A register of a forced air system to include an injector and a damper switch to regulate a thermostatic element for heated and air-conditioned airstreams. A direct drive mechanism to allow the thermostatic element to control the movement of a sliding grill.

Abstract: An air conditioner and a method for controlling an air conditioner which can operate in at least two operation modes, such as a cooling mode and heating mode. The capacity of the air conditioner is determined based on a difference between a set temperature and the temperature detected by a room temperature sensor every time a set time has elapsed, and the amount of variation of the detected temperature over the set time. The capacity can be controlled using PID control, fuzzy control, genetic algorithm control, or the like. The set time is varied based on the operating mode. Also, the set time can be varied in accordance with the volume of air blown into the room from the air conditioner, the direction of the blown air, the performance rating of the air conditioner and/or the size of the room to be conditioned.

Abstract: An air conditioner for vehicles includes a damper for switching among an outside-air inlet mode, an inside-air inlet mode and an outside/inside-air inlet mode, a manual switch for selecting any one of the respective inlet modes, an automatic switch for automatically selecting one of the respective inlet modes, a heating and cooling operation unit, an inside-air temperature sensor, an outside-air temperature sensor and a control unit for selectively controlling the respective inlet modes based on the condition of the heating and cooling operation unit, the condition of the respective switches and the difference between the temperatures detected by the respective temperature sensors. In the air conditioner, an optimum air conditioning in correspondence to the load required for air conditioning can be realized from the viewpoint of saving of energy and efficient operation.

Abstract: Method and control system for controlling an automotive HVAC (heating, ventilation and air conditioning) system using fuzzy logic to increase steady state comfort of an occupant in a vehicle and to decrease the time needed to reach steady state comfort. The control system responds to signals generated by various climate control sensors, including a humidity sensor, to produce a desired humidity, temperature and flow. Fuzzy logic calculations are performed based on fuzzy rules and membership functions to provide nonlinear compensation and to allow the control to be expressed in the same heuristic terms that an occupant could use in describing the level of comfort.

Abstract: A thermally controlled diffuser comprises a means for connecting the diffuser to a duct, a divergent outlet, a means for deflecting flow from the divergent outlet, and a means for supporting the flow deflection means in a predetermined positional relationship with respect to the divergent outlet. The support means includes a temperature sensitive mechanism whereby the predetermined positional relationship between the outlet and the flow detection means may be varied depending on a temperature sensed by the temperature sensitive mechanism so as to produce a variation in the outlet flow pattern of the diffuser. The thermally controlled diffuser may preferably be a ceiling diffuser, and preferably the variation in the positional relationship is in a vertical direction when the diffuser is installed. A method of automatically varying the flow pattern of a diffuser is also described.

Abstract: An air conditioner includes a housing to be mounted on a wall surface in the interior of a room, an air inlet provided at an upper part of the housing, an air outlet provided at a lower part of the housing, an air passage provided in said housing so as to connect the air inlet and said air outlet to each other, a heat exchanging means and an air blowing device disposed in said air passage, and a wind direction plate provided inside an opening of the air outlet in order to change the direction of blowing of thermoregulated air out of the air outlet. An air quantity adjusting plate is provided at an end of the opening of said air outlet in order to change the area of the opening of the air outlet, whereby a sufficient air quantity is obtained regardless of the direction of ventilation of thermoregulated air to thereby perform room air-conditioning efficiently.

Abstract: An apparatus and method for thermostatically controlling the operation of a multiple speed fan and light assembly by inputting a desired temperature range and airflow direction for each fan speed and by inputting a single number for controlling the on time and duration of the light assembly. A temperature sensor determines an initial room temperature, an input device enters a temperature set-point corresponding to each of the fan speeds, a processor stores the temperature set-points corresponding to each of the fan speeds from the input device, receives the temperature signal and uses the temperature signal and the temperature set-points to determine a desired fan speed, and a fan driving device changes the initial rotation speed to the desired fan speed in response to the processor and thereby automatically controls the fan speed.

Abstract: The present device is a movable-louver heating and cooling register. The register is designed to have the same overall dimensions of commercial registers available today. The heating and cooling register has movable louvers installed on pivots that are formed in the register body. Two control arms are used to pivot the groups of louvers. The control arms are mounted on diagonals from each other. Both control arms are attached to a central control shaft, which is designed to rotate about its central axis. Because the control arms are mounted on opposite sides on the diagonal, as the control shaft is rotated, it pulls the two control arms in opposite directions. This causes each set of louvers to move in opposite directions. The advantage of movable louvers is that they can be used with both heating and cooling cycles. To operate the louvers, the control shaft can be turned by hand.

Abstract: The disclosure involves a variable air volume (VAV) terminal unit having an inlet collar, a box-like compartment connected to the collar and an insulation layer on the exterior surface of the compartment. The compartment is made of non-fibrous, rigid sheet-like material and an air stream flows through the compartment in contact with the sheet-like material and along a path spaced from the insulation layer. A method for making the variable air volume terminal unit involves steps including forming a plurality of flat, panel-like insulating components and securing a separate component to each of at least two compartment surfaces.

Abstract: A thermally actuated deflector structure for automatically varying the air discharge pattern of a ceiling diffuser in response to a sensed change in the temperature of air being delivered to the diffuser includes a multi-bladed damper assembly positioned over a central outlet portion of the diffuser and having a frame portion secured to the diffuser. The blades in the damper assembly are drivable between a cooling orientation in which they block the central diffuser portion and preclude supply air flow downwardly therethrough, and a heating orientation in which they uncover the central diffuser portion and permit supply air flow downwardly therethrough. A coiled bimetallic actuating strip is positioned above the damper assembly and has an inner end anchored to the damper frame, and an outer end secured to a drive member linked to the damper blades.

Abstract: Disclosed is an air conditioning system which provides for controlling the flow of conditioned air from a duct to a predetermined location of an occupied area of a building. A fitting is secured at one end thereof to the duct and has a moveable butterfly valve mounted therein for selectively controlling flow of conditioned air therethrough, the fitting including a motor and motor control relay for controlling operation of the valve. An outlet is mounted in association with wall means adjacent the location and spaced from the fitting. A flexible conduit is connected to another end of the fitting means and extends from the fitting means to and is connected with the outlet means.

Abstract: A controller for a variable air volume terminal of a variable air volume air conditioning system which comprises a temperature sensing circuitry for generating a temperature process value, a setpoint determining circuitry for establishing a temperature setpoint, an airflow signal circuitry for generating an airflow setpoint in response to the temperature process value and the temperature setpoint. A flow sensing circuitry for generating a flow process value in response to a predetermined set of flow sensing inputs and damper control circuitry for generating a damper motor operation signal to control the damper motor in response to the flow process value and the airflow setpoint. The damper control circuitry comprises a fuzzy logic control mechanism for implementing a set of fuzzy logic rule-based instructions in generating the damper motor operating signal.

Abstract: An air flow controller has an adjustable air flow passageway and comprises a surface-mounted distribution frame housing one or more elongate passages. Each passage has an inlet, a flow channel and an outlet. The inlet has two opposed guide flaps to control the flow of air passing into the flow channel. Two opposed wall members define the width of the channel, the wall members being adapted to be position-adjusted on control movement of the guide flaps with the outer ends of the wall members defining the outlet.

Abstract: The direction of air flow in an air blower is controlled by a plurality of rotationally adjustable blades (vanes) extending across an air flow passage. A motor is connected to the blades for rotating the blades between passage-opening and passage-closing positions and intermediate positions therebetween. A sensor senses the angular position of the blades and supplies a signal to a controller which compares that signal to a signal representative of a selected angular position of the blades. If the blades become-displaced by a force independent of the motor, the sensor signals the controller of such displacement, whereupon the motor is actuated to return the blades to the selected position.

Abstract: A VAV air conditioning system has a micro-computer control device, a main fan motor, a by-pass fan motor, a heat exchange pipe assembly. The micro-computer control device has a function setting unit, temperature detecting units, a central processing unit and an output control unit and a power supply unit. A control circuit is used to control the main fan motor to supply air led through the heat exchange pipe assembly in accordance with a loading requirement in a closed space so that the temperature thereof can be precisely controlled. As a conditioning loading is lowered, the control circuit can make the main fan motor slow down so as to reduce the supply of conditioned air volume, causing a decrease of main air supply. In the meanwhile, the control circuit outputs another power variable signal to a by-pass fan motor which can produce air supply led directly into the closed space without going through the heat exchange pipe assembly.

Abstract: A retrofit air conditioning system for use with an existing induction air conditioning system is disclosed, wherein the existing system includes a central fan unit supplying air to a plurality of distribution units in corresponding rooms. The retrofit air conditioning system includes a retrofit air conditioning unit sized for receipt in an existing distribution unit. The retrofit air conditioning unit includes a fan downstream of an adjustable damper for inducing conditioned air from the central fan unit and for inducing recirculated air from the room. A microcontroller receives a temperature signal from a thermostat and produces a damper signal to adjust the damper in accordance with the sensed temperature. Also disclosed is a retrofit central fan unit for use with the retrofit induction unit, wherein the retrofit central fan unit supplies varying amounts of conditioned air to the distribution units to maintain a constant supply pressure.

Abstract: An apparatus and method for converting a fixed-opening air diffuser (21) to an individually-controlled variable air volume diffuser. The fixed-opening diffuser (21) includes a diffuser housing (26) mounted to a support structure (25) and coupled to receive air from a supply conduit (24) positioned behind the support structure (25) and a diffusion assembly (27) mounted across the housing (26) to distribute the air from the housing (26). The method includes the steps of removing the diffusion assembly (27) from a position across the diffuser housing (26) to provide access to the housing, mounting a thermally-powered diffuser actuator assembly (31) having a movable vane (32) coupled to actuator assembly (31) inside the diffuser housing (26) in a position for control of air discharged from the diffuser housing (26) by thermally-driven displacement of the vane (32).

Abstract: The invention relates to an air flow controllable register unit for controlling flow of air through the register from an air circulating system having a register air flow supply duct. The air flow is controlled in response to an externally provided control signal that commands the register flow control unit to provide differing air flow rates through the register. The register unit includes a register flow control apparatus which has a power generating device that includes a rotary mounted air turbine positioned within the register air flow supply duct. The air turbine is coupled to a generator to drive the same upon air flow against blades of the turbine. The air driven turbine initially restricts air flow of the register at system start-up.

Abstract: A thermally powered change over diffuser for controlling the flow orientation of air discharged from a ceiling mounted duct outlet includes a pair of vanes pivotably mounted on a platform for scissor-wise movement between an open and a closed position, and a thermally responsive actuator. Discharge of cooled air from the duct causes the actuator to move the vanes together into the closed position, blocking the center of the flow path, and forcing the discharge air to exit in a substantially horizontal orientation. Discharge of heated air causes the actuator to move the vanes apart, into the open position, allowing warm air to flow vertically downwardly into a building space.

Abstract: A method and apparatus for the mechanical ventilation and heating of a premises with improved removal of impurities from air present in the premises. At least one suction extraction device is provided for removing polluted or stale air in a region adjacent to the ceiling of the premises. Pure supply air at a temperature in the region of or exceeding the air temperature of the premises is supplied to the premises in the lower region thereof. The supply air forms a substantially horizontal and vertically narrow air jet for displacement of existing air located in a region proximate the floor. The apparatus (1) includes one low impulse device (10) and one high impulse device (20), in addition to which at least one device (31) is provided for guiding air (supply air) emitted from a fan system to the high impulse device and/or to the low impulse device.

Abstract: An air conditioning system and a control method thereof enables an infrared-ray detecting portion to detect the number of people and their moving area and controls the direction of a louver and an amount of air forced by a room blower fan, the swing of the louver being adjusted according to the movement state and the number of people so as to make the users feel a comfortable air conditioning environment at every area of room.

Abstract: 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 upwardly along the wall to the ceiling, thus thoroughly mixing the introduced and room air and reducing their differential in temperature and velocity virtually to zero by the time the air stream reaches the ceiling.

Abstract: The invention is directed to a control system for an air delivery system having a supply duct through which air is delivered into at least one independently controlled zone or room through an air delivery register. The control system for one zone or room includes a wireless air flow control thermostat to transmit a wireless air flow control signal output to an electrically powered and electrically self sufficient register air flow control unit that controls the flow of the air through the register in response to receiving the wireless airflow control signal output. The electrically powered and electrically self sufficient register air flow control unit includes an electrical generator to provide power in response to flow of air through the register from the supply duct. The generated electric power is delivered to the register air flow control unit to thereby maintain the register flow control unit electrically self sufficient and free from the need of any outside electrical power source.

Abstract: A combination fire alarm/air conditioner, which can immediately detect a fire. The device includes a temperature-sensor and/or a smoke-sensor installed in the room-side air inlet of the air conditioner. Signals generated by the sensor are received by a microcomputer which monitors them based on a threshold and a rate of change of the signals. When the rate of change of the signals exceeds the threshold, the microcomputer produces signals which set off an alarm.

Abstract: A louver is provided at an air outlet of an indoor unit. The louver changes the direction of air into the room and swings in a horizontal direction of the room. On the other hand, a temperature sensor unit is provided on the indoor unit. The temperature sensor unit senses temperatures at a plurality of locations in the room. A difference between sensed temperatures of the temperature sensor unit is detected, and the center of swing of the louver is set at a position determined on the basis of the detection result. Further, the angle of swing of the louver is changed in accordance with the detection result.

Abstract: 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 comprises a frame with four sides wherein are provided on at least two horizontal controls, which are formed as first rack bars. The frame has a horizontal edging and several parallel slats provided on at least one side hereof with a layer made of windproof and elastic material. A pinion is mounted in rotatable position opposite each guide on the edging, said pinion comprising a first and a second gear, the first gear being in mesh with the mentioned first rack bars, and the second being in mesh with teeth on the second rack mounted in movable position on the edging.

Abstract: An inflatable bag of flimsy plastic material is placed in the air duct of a house or other building. The bag is coupled to a fan and electric motor. The device is placed near the duct outlet register, where it can be easily inserted and retrieved. The motor is operated, to inflate/deflate the bag, by a thermostat in the room via radio connection between the thermostat and the motor. When the bag is deflated, the duct is open, and treated air from a central unit can then enter the room. The bag takes air from inside the duct, and static pressure inside the duct holds the bag inflated; when the bag is deflated, the air intake faces away from velocity of the flowing air, so the flowing air does not tend to inflate the bag. The fan motor is driven by a battery.

Abstract: An air exchange system is disclosed for use in a building having a plurality of stories each having a base floor, finished floor, finished ceiling and rough ceiling. The system comprises a plurality of main distribution ducts each adapted to be located in the space defined between the finished ceiling of a lower story and the finished floor of an upper story lying immediately above the lower story. The main ducts are located on alternate floors and adapted to supply sufficient air for the two adjacent floors. Each of the main ducts are provided with at least one upper duct which communicates with an upper story through the base floor and at least one lower duct which communicates with a lower story through the rough ceiling thereof. A variable air volume control unit is connected to each upper and lower duct controlling the volume of conditioned air entering a story of the building in order to control the temperature within the user space therein.

Abstract: An air conditioning system comprises an air conditioning unit, a blower for blowing conditioned air, a polygonal branch chamber of prescribed volume, a main duct with damper for delivering conditioned air from the blower to the polygonal branch chamber and branch ducts with dampers for delivering the conditioned air from the polygonal branch chamber to a plurality of discrete spaces. The polygonal branch chamber ensures quiet operation. An electrical circuit board is mounted on the bottom of the polygonal branch chamber and all wiring required for control of the dampers and other components of the system are connected with this board to enable maintenance work to be conducted at a signal location. A circular inspection hole with removable cover is formed in the bottom of the polygonal branch chamber to provide easy access to its interior.

Abstract: An air conditioning apparatus comprises a plurality of outlet ports, a blowing fan for blowing off an conditioned air from the outlet ports to the outside of the main body of the apparatus, an air directing plate arranged in at least one of the outlet ports to enable the direction of the conditioned air to change, an operation state detecting device for detecting the operation state of the main body, and a driving device for adjusting the position of the air directing plate, depending on signals from the operation state detecting device.