Patents
Sitemap › F25 - Refrigeration or cooling; Combined heating and refrigeration systems; Heat pump systems; Manufacture or storage of ice; Liquefaction or solidification of gases › F25B - Refrigeration machines, plants, or systems; Combined heating and refrigeration systems; Heat pump systems › F25B 49 - Arrangement or mounting of control or safety devices
Patents for F25B 49 - Arrangement or mounting of control or safety devices (13,159)
03/1982
03/16/1982US4320316 Operation time control apparatus
03/16/1982CA1120134A1 Control system for automatic delayed operation of a gas operated absorption refrigerator
03/02/1982US4317334 Remote refrigeration system with controlled air flow
02/1982
02/23/1982US4316365 Defrost control system for refrigeration system
02/23/1982US4316364 Vapor compression refrigerant system monitor
02/23/1982CA1118870A1 Heat pump control system
02/16/1982US4315413 Selective temperature control system
02/10/1982EP0045659A2 Control of vapour compression cycle refrigeration systems
02/10/1982EP0045506A1 Heat pump installation for the removal of heat from the atmosphere
02/09/1982US4314456 Refrigerant condensing system
02/09/1982US4314452 Compressor discharge converter
02/09/1982CA1117934A1 Heat reclaiming method and apparatus
01/1982
01/26/1982EP0034591A4 Apparatus for controlling capacity of a multiple-stage cooling system.
01/20/1982EP0044248A2 Cooling device with compartments at different temperatures
01/19/1982CA1116721A1 Safety arrangement in a gas operated apparatus
01/12/1982US4309876 Method and apparatus for satisfying heating and cooling demands and control therefor
01/05/1982US4308725 Refrigerant quantity detecting device for air conditioning of vehicles
01/05/1982CA1115801A1 Diagnostic system for heat pump
12/1981
12/29/1981US4307775 Current monitoring control for electrically powered devices
12/29/1981US4307576 Air conditioning system having a plurality of indoor units
12/23/1981EP0042117A2 Heat pump
12/08/1981US4304100 Energy saving refrigeration system with mechanical subcooling
12/08/1981CA1114043A1 Head pressure control for heat reclaim refrigeration systems
11/1981
11/24/1981US4301660 Heat pump system compressor fault detector
11/10/1981US4299664 Vapor degreaser
10/1981
10/27/1981US4296627 Method and device for measuring the required cooling capacity of a cold space and the refrigeration capacity of the refrigerating machinery
10/27/1981CA1111266A1 Device at heating or cooling unit
10/20/1981US4295792 Apparatus for controlling operation of fluid pressure raising system
10/06/1981US4292813 Adaptive temperature control system
10/06/1981US4292811 Operating method for refrigerating machine
09/1981
09/29/1981US4291544 Control apparatus for the low pressure evaporator of a refrigeration plant
09/29/1981CA1109945A1 Compressor refrigerator
09/29/1981CA1109672A1 Stepped capacity constant volume building air conditioning system
09/22/1981US4290276 Valve with frangible closure
09/22/1981US4290274 Liquid spray device with adaptive duty cycle
09/22/1981US4290272 Means and method for independently controlling vapor compression cycle device evaporator superheat and thermal transfer capacity
09/15/1981US4288991 Refrigeration and heating improvement
09/15/1981CA1108878A1 Vapor compression cycle device with multicomponent working fluid mixture and improved condensing heat exchanger
09/15/1981CA1108877A1 Vapor compression cycle device with multicomponent working fluid mixture and method of modulating its capacity
09/08/1981US4287722 Combination heat reclaim and air conditioning coil system
09/08/1981CA1108423A1 Vapor compression cycle device with multi-component working fluid mixture and method of modulating its capacity
09/02/1981EP0034591A1 Apparatus for controlling capacity of a multiple-stage cooling system.
09/01/1981US4286438 Condition responsive liquid line valve for refrigeration appliance
09/01/1981US4286437 Energy saving refrigeration system
08/1981
08/25/1981US4285207 Air conditioning apparatus comprising refrigerant shortage sensor
08/25/1981US4285205 Refrigerant sub-cooling
08/19/1981EP0033781A2 Compressor fault detection and control system for a heat pump
08/19/1981EP0033756A1 Method and device for regulating a heating plant with an installation for obtaining heat from an absorber
08/18/1981US4283921 Control and alarm system for freezer case temperature
08/18/1981US4283920 Refrigerating device
08/18/1981US4283919 Vapor compression cycle device with multi-component working fluid mixture and method of modulating the thermal transfer capacity thereof
08/11/1981US4282719 Control system for regulating large capacity rotating machinery
08/11/1981US4282718 Evaporator inlet water temperature control system
07/1981
07/28/1981US4281358 Multifunction dynamoelectric protection system
07/28/1981US4280331 Single effect and double effect absorption refrigerating system
07/14/1981US4278502 Chemical recovery apparatus
07/14/1981US4277955 Twin compressor mechanism in one enclosure
07/07/1981CA1104358A1 Loss of refrigerant and/or high discharge temperature protection for heat pumps
06/1981
06/23/1981US4274264 Chiller control
06/16/1981US4272965 Method and apparatus for controlling and conserving energy in an absorption refrigeration system
06/02/1981US4270361 Energy management controller for centrifugal water chiller
05/1981
05/27/1981EP0029141A2 Heat pump
05/26/1981US4269034 Absorption unit with variant control system
05/19/1981US4267704 Timing circuit for air conditioner chiller
05/19/1981CA1101231A1 Heat transfer control circuit for a heat pump
05/06/1981EP0027995A2 System for transferring heat energy from a refrigeration circuit to a hot water circuit
05/05/1981US4265091 Refrigerant compressor protecting device
05/05/1981CA1100320A1 Hot gas bypass control for centrifugal liquid chillers
04/1981
04/29/1981EP0027619A2 Method of operating a heat pump
04/29/1981EP0027584A2 Refrigerated vending unit
04/28/1981US4263962 Heat pump control system
04/22/1981EP0027243A1 Method and apparatus for satisfying heating and cooling demands and control therefor
04/21/1981US4262736 Apparatus for heat pump malfunction detection
04/21/1981US4262488 System and method for controlling the discharge temperature of a high pressure stage of a multi-stage centrifugal compression refrigeration unit
04/14/1981CA1099369A1 Temperature control system for refrigeration apparatus
04/14/1981CA1099121A1 Fluidic time delay system
04/08/1981EP0026400A2 Method and apparatus for satisfying heating and cooling demands
04/07/1981US4259847 Stepped capacity constant volume building air conditioning system
04/07/1981US4259845 Logic control system for inverter-driven motor
03/1981
03/24/1981US4257795 Compressor heat pump system with maximum and minimum evaporator ΔT control
03/24/1981US4257758 Safety arrangement in a gas operated apparatus
03/24/1981US4257238 Microcomputer control for an inverter-driven heat pump
03/24/1981CA1097934A1 Heat pump system compressor fault detector
03/10/1981US4254632 Method and apparatus for satisfying heating and cooling demands and control therefor
03/10/1981US4254631 Method and apparatus for satisfying heating and cooling demands and control therefor
03/03/1981US4253312 Apparatus for the recovery of useful heat from refrigeration gases
03/03/1981US4253311 Control system for a mobile absorption refrigerating apparatus
02/1981
02/24/1981US4253130 Method and apparatus for heat pump system protection
02/24/1981US4251997 Control of absorption systems energized from plural storage tanks maintained at different temperatures
02/24/1981US4251996 Heat reclaiming method and apparatus
02/19/1981WO1981000446A1 Method and apparatus for controlling capacity of a multiple-stage cooling system
02/03/1981US4248292 Heat transfer control circuit for a heat pump
02/03/1981US4248055 Hot gas bypass control for centrifugal liquid chillers
02/03/1981US4248054 Refrigeration system with load balancing control for at least three centrifugal compressors
02/03/1981US4248053 Dual capacity compressor with reversible motor and controls arrangement therefor
02/03/1981US4248051 System and method for controlling air conditioning systems
02/03/1981CA1094836A1 Heat pumps
01/1981
01/27/1981US4246763 Heat pump system compressor fault detector
01/27/1981US4246762 Absorption refrigeration system
01/27/1981US4246761 Absorption heat pump control system
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