Patents
Sitemap › F24 - Heating; Ranges; Ventilating › F24F - Air-conditioning; Air-humidification; Ventilation; Use of air currents for screening › F24F 11 - Control or safety systems or apparatus
Patents for F24F 11 - Control or safety systems or apparatus (29,222)
01/1989
01/17/1989US4798057 Refrigerating apparatus and control method thereof
01/17/1989CA1248756A1 Method of operating an air conditioner
01/11/1989CN1030296A Separate type air conditioner
01/10/1989US4796803 Air volume regulator valve
01/10/1989US4796439 Air conditioning system
01/04/1989EP0297954A1 Fully opening safety valve for vacuum container
01/03/1989US4795089 Room air conditioner
01/03/1989US4795088 Air conditioning system
01/03/1989US4794852 Inlet Device
01/03/1989US4794763 In an air conditioning system
01/03/1989CA1248201A1 Residential heating, cooling and energy management system
12/1988
12/29/1988WO1988010403A1 Procedure and means for controlling volumetric flow rate in air-conditioning installations
12/29/1988DE3819697A1 Method and apparatus for regulating the minimal air flow into and out of a room to be ventilated
11/1988
11/30/1988EP0292671A2 Ventilation device
11/29/1988US4788520 Ratchet means switch operator
11/29/1988US4787752 Live component temperature conditioning device providing fast temperature variations
11/29/1988US4787555 Environmental control system with condition responsive timer and method
11/29/1988US4787212 Air conditioner with automatic shutdown
11/23/1988EP0292066A2 A method of controlling moisture transport and check valve adapted therefore
11/23/1988CN88201318U Electronic controller for air-conditioner
11/17/1988EP0215097B1 A device for changing the temperature of a room
11/15/1988US4784213 Mixing valve air source
11/15/1988US4784212 Building perimeter thermal energy control system
11/15/1988CA1244906A1 Zone control system for energy conservation
11/09/1988CN88103310A 空气调节器 Air conditioner
11/08/1988US4782999 Air conditioning apparatus and grille control method thereof
11/01/1988US4781107 For preventing disturbances of the ventilation air flow
10/1988
10/26/1988CN87214924U High-precision constant-temp. comstant-humidity automatically-controlling system
10/25/1988US4780254 Ultrasonic; predetermined period divided into fixed spraying and stopping times; adjustment to signal
10/19/1988EP0286888A1 Temperature control system
10/12/1988EP0286583A2 Method for switching over, on or off a component of a heating, ventilation, air conditioning or heat pumps plant without the use of a control wire
10/12/1988CN87102405A Automatic relative humidity-controlling system
10/11/1988US4776385 Air ventilation control system
10/05/1988EP0285588A2 A system for controlling automatically the setting of a damper in a ventilation duct
10/04/1988US4775944 System for controlling air conditioning and/or hot water supplying apparatus
10/04/1988US4775133 Electric air valve
10/04/1988CA1242777A1 Control system to delay the operation of a refrigeration heat pump apparatus after the operation of a furnace is terminated
09/1988
09/28/1988EP0283954A2 Compressor drive system and air conditioner using the same
09/27/1988US4773587 Heating and air conditioning fan sensor control
09/27/1988US4773311 Make up air controller for use with fume hood systems
09/21/1988EP0282782A2 Multiple room type air conditioning system and control method therefor
09/21/1988CN88101298A Data drive type air conditioner controller
09/21/1988CN88101287A Air conditioning system for building
09/15/1988DE3706894A1 Compact gas warning safety unit
09/14/1988EP0281762A2 Air conditioning system for buildings
09/13/1988US4770200 For receiving digital input control signals
09/07/1988EP0281248A2 Humidification control system
08/1988
08/31/1988EP0279865A1 Temperature sensing element
08/30/1988US4766735 Inverter-aided multisystem air conditioner with control functions of refrigerant distribution and superheating states
08/24/1988EP0279552A2 Humidification control system
08/24/1988CN87216721U Fully automatic air condctioner
08/23/1988US4765231 Smoke exhausting air conditioning system
08/16/1988US4763485 Heat pump controller
08/10/1988CN87212479U Temp.-limiting controller for air conditioner
08/10/1988CN87105963A Air conditioner and method of dehumidifier control
08/09/1988US4761964 Apparatus for enhancing the performance of a heat pump and the like
07/1988
07/28/1988WO1988005517A1 Ventilation control procedure and ventilation control means
07/26/1988US4759198 Ventilator for refrigerator
07/14/1988WO1988005147A1 Air distribution system
07/14/1988DE3644590A1 Ventilating apparatus for blowing supply air into a room
07/12/1988US4756474 Duct pressure powered air volume controller
07/07/1988DE3644567A1 Method for blowing supply air into a room
07/06/1988CN87101220A Operation unit of gas-changing fan
07/05/1988US4754919 Air conditioning apparatus
06/1988
06/28/1988US4753083 Device for controlling the capacity of a variable capacity compressor
06/22/1988EP0272196A2 Outdoor ambient temperature controlled heat-pump system
06/21/1988US4751874 For an underground personnel shelter
06/21/1988US4751825 Defrost control for variable speed heat pumps
06/21/1988CA1238394A1 Refrigeration heat pump and auxiliary heating apparatus control system with switchover during low outdoor temperature
06/15/1988EP0271428A2 Defrost control for variable speed heat pumps
06/14/1988US4750545 Humidity and temperature control system
06/14/1988US4750544 Movable heat exchanger system
06/14/1988CA1238105A1 Duty cycling furnace and air conditioner control switch and control enclosure box therefore
06/08/1988EP0270475A2 Static pressure control in variable air volume delivery systems
06/08/1988EP0270474A1 Electrically commutated, variable speed compressor control system
06/08/1988EP0269776A1 Method of continuously regulating the operation of a ventilation plant and a ventilation plant for use in said method
06/08/1988CN87105146A Air supply controlling apparatus used in air condition
06/07/1988US4749000 Normally open pneumatic air valve
06/07/1988US4748822 Speed control of a variable speed air conditioning system
06/07/1988US4748819 Air conditioning system for automotive vehicles
06/01/1988EP0269399A2 Air conditioner and method of dehumidifier control
06/01/1988EP0269282A2 Air conditioner
05/1988
05/31/1988US4747748 Air turbine for preventing formation of ice on air exposed turbine parts
05/24/1988US4745766 Dehumidifier control system
05/24/1988CA1237015A1 Method and means for aerating a local
05/19/1988DE3638015A1 Room-cooling system
05/18/1988CN87107689A 空调系统 Air conditioning systems
05/17/1988US4744289 Cab for occupancy by individuals
05/17/1988US4744223 Air conditioning apparatus
05/17/1988CA1236694A1 Zone control apparatus for central heating and/or cooling systems
05/11/1988EP0266680A2 Air conditioning system
05/10/1988US4742692 Method of air-conditioning and system for the same
05/10/1988CA1236313A1 Defrost control system for a refrigeration heat pump apparatus
05/03/1988US4741257 Fume hood air flow control
04/1988
04/26/1988US4739924 Air volume regulator valve
04/21/1988WO1988002835A1 Electronic thermostat employing adaptive cycling
04/20/1988EP0264272A2 An electronic thermostat system and method for controlling the operation of a temperature modifying apparatus
04/19/1988US4738188 Room air circulating apparatus
04/19/1988US4738118 Air conditioner
04/19/1988US4738116 Apparatus for deflecting the direction of the wind in an air conditioner
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