Patents for F25B 49 - Arrangement or mounting of control or safety devices (13,159)
01/1981
01/20/1981CA1093849A1 Energy conservation system having improved means for controlling receiver pressure
01/13/1981CA1093329A1 Multiple compressor heat pump with coordinated design
01/07/1981EP0020332A1 A method for running a cooling-heating pump
01/06/1981US4242879 Control system for a refrigerating apparatus operable electrically or by gas
01/06/1981CA1093182A1 Refrigeration control system
12/1980
12/30/1980CA1092685A1 Control apparatus for two-speed single phase compressor
12/23/1980US4240265 Mist spray apparatus for air conditioner condenser
12/16/1980US4238933 Energy conserving vapor compression air conditioning system
12/16/1980CA1091786A1 Air conditioning unit control
12/02/1980US4236380 Control system for automatic delayed operation of a gas operated absorption refrigerator
12/02/1980US4236379 Heat pump compressor crankcase low differential temperature detection and control system
11/1980
11/26/1980EP0019124A1 Heat pump and process for operating the same
11/25/1980CA1090307A1 Control for a combination furnace and heat pump system
11/18/1980US4233818 Heat exchange interface apparatus
11/11/1980US4232530 Heat pump system compressor start fault detector
11/04/1980US4231229 Energy conservation system having improved means for controlling receiver pressure
10/1980
10/28/1980US4230470 Air conditioning system
10/21/1980US4228846 Control apparatus for a two-speed heat pump
10/14/1980US4227862 Solid state compressor control system
10/14/1980US4227380 Single casing, multiple duty valve
10/07/1980US4226604 Method and apparatus for preventing overheating of the superheated vapors in a solar heating system using a refrigerant
10/07/1980CA1087278A1 Control system for refrigeration apparatus
09/1980
09/16/1980CA1085636A1 Capillary retainer clip
09/09/1980US4221116 Temperature compensated control for air conditioning system or heat pump
09/02/1980US4220013 Pressure compensated control for air conditioning system or heat pump
09/02/1980US4220011 Air cooled centrifugal refrigeration system with water heat recovery
09/02/1980US4220010 Loss of refrigerant and/or high discharge temperature protection for heat pumps
08/1980
08/26/1980US4218890 Vapor compression cycle device with multi-component working fluid mixture and improved condensing heat exchanger
08/19/1980US4217763 Asynchronous motor-driven machine having variable torque demand, such as household refrigerator compressors
08/19/1980US4217760 Vapor compression cycle device with multi-component working fluid mixture and method of modulating its capacity
07/1980
07/29/1980US4214453 Injector cooler controls
07/22/1980US4213306 Method and apparatus for increasing air conditioner efficiency
07/08/1980US4211089 Heat pump wrong operational mode detector and control system
07/01/1980US4209997 Accumulator cycling switch
07/01/1980US4209996 Reciprocating compressor refrigeration system using step expansion and auto staging
05/1980
05/29/1980WO1980001102A1 A method for running a cooling-heating pump
05/13/1980US4202181 Fuel conservation controller for heating and refrigeration apparatus
05/06/1980US4201061 Automatic chilled water setpoint temperature control
04/1980
04/29/1980CA1076557A1 Method and apparatus for controlling heat pumps
04/29/1980CA1076374A1 System for producing refrigeration and a heated liquid and control therefor
04/08/1980US4196596 Liquid trap for freeze-up protection on air cooled centrifugal chiller
04/02/1980EP0009145A1 Refrigerant compressor capacity control apparatus
03/1980
03/20/1980WO1980000491A1 Device for a heating or cooling unit
03/18/1980US4193781 Head pressure control for heat reclaim refrigeration systems
03/18/1980US4193270 Refrigeration system with compressor load transfer means
03/18/1980US4193269 Apparatus for supplying a cooling liquid to a condenser of a refrigeration unit
03/04/1980US4191027 Apparatus for cooling brine
03/04/1980US4191024 Defrosting method and cooling apparatus in a refrigeration system
02/1980
02/26/1980US4190105 Heat exchange tube
02/26/1980US4189929 Air conditioning and dehumidification system
01/1980
01/22/1980US4184341 Suction pressure control system
01/22/1980CA1070129A1 Variable capacity multiple compressor refrigeration system
01/15/1980US4183466 Thermally actuated phase change operated control valve for heat pump systems
01/08/1980US4182133 Humidity control for a refrigeration system
01/08/1980CA1069604A1 Switching device
01/01/1980US4180986 Refrigeration system on/off cycle
01/01/1980CA1068920A Head pressure control system for refrigeration apparatus
12/1979
12/25/1979US4179899 Refrigerating system
12/25/1979US4179898 Vapor compression cycle device with multi-component working fluid mixture and method of modulating its capacity
12/18/1979US4178988 Control for a combination furnace and heat pump system
12/18/1979US4178771 Compressor refrigerator
12/18/1979US4178769 System for producing refrigeration and a heated liquid and control therefor
12/18/1979CA1068380A1 Heat pump system with multi-stage centrifugal compressors
12/11/1979US4177649 Surge suppression apparatus for compressor-driven system
11/1979
11/20/1979CA1066525A2 Coordinated heat pump system
09/1979
09/18/1979US4167858 Refrigerant deficiency detecting apparatus
08/1979
08/28/1979US4165619 Method of controlling a heat pump, and a heat pump device adapted to operate in accordance with said method
08/22/1979EP0003578A2 Refrigerant circuit of a heat pump
08/14/1979US4164128 Absorption refrigeration system and control
07/1979
07/31/1979CA1059329A1 Two stage compressor heating
07/17/1979US4161106 Apparatus and method for determining energy waste in refrigeration units
06/1979
06/26/1979CA1057069A1 Method and apparatus for making and holding ice in an artificial ice rink
06/12/1979US4157649 Multiple compressor heat pump with coordinated defrost
05/1979
05/22/1979CA1054812A1 Refrigeration system subcooling control
05/22/1979CA1054811A1 Heat pump control system
05/08/1979US4152902 Control for refrigeration compressors
05/01/1979US4151724 Pressurized refrigerant feed with recirculation for compound compression refrigeration systems
04/1979
04/17/1979CA1052633A1 Freeze/thaw indicator
04/03/1979US4147203 Method and apparatus for controlling the heating and cooling function of a heat pump system
03/1979
03/27/1979US4146085 Diagnostic system for heat pump
03/06/1979US4142375 Control apparatus for air conditioning unit
02/1979
02/27/1979CA1049275A1 Refrigeration system
02/20/1979CA1048802A1 Heat reclaim unit
02/13/1979US4138857 Cooling system bracket assembly for automotive vehicles
02/13/1979US4138856 Leak detector device
02/06/1979US4137725 Compressor control for a reversible heat pump
01/1979
01/30/1979US4137057 Refrigerating systems with multiple evaporator fan and step control therefor
01/30/1979US4136528 Refrigeration system subcooling control
01/23/1979CA1046784A1 Compressor refrigeration plant
01/16/1979US4134274 System for producing refrigeration and a heated liquid and control therefor
01/09/1979US4133186 Combined electrical cut-off and relief valve
01/09/1979US4133185 Automatic air circulation control
01/02/1979US4132086 Temperature control system for refrigeration apparatus
01/02/1979US4132085 Control apparatus including an electronic timer
11/1978
11/28/1978CA1043116A1 Compressor refrigeration plant
11/28/1978CA1043102A1 Air conditioning system for a railway vehicle
11/07/1978US4123914 Energy saving change of phase refrigeration system
10/1978
10/17/1978US4120173 Head pressure control system for refrigeration apparatus
10/10/1978CA1040287A1 Refrigeration system and control therefor
09/1978
09/12/1978US4112703 Refrigeration control system