Patents for F25B 49 - Arrangement or mounting of control or safety devices (13,159)
10/1993
10/26/1993US5255977 Method and device for monitoring the efficiency of a condenser
10/26/1993US5255530 System of two zone refrigerator temperature control
10/26/1993US5255529 Environmental control system
10/26/1993US5255523 Method and apparatus for determining the solid fraction of a stored cryogenic refrigeration system
10/19/1993US5253483 Environmental control system
10/19/1993US5253481 Control unit for activating compressor
10/14/1993WO1993020393A1 Refrigerant shortage detecting method and apparatus for air-conditioners
10/13/1993EP0565312A2 Integral motor and control
10/12/1993US5251453 Low refrigerant charge detection especially for automotive air conditioning systems
10/12/1993CA1322858C Cooling apparatus and control method therefor
10/06/1993EP0564123A1 Refrigeration system
10/06/1993EP0564095A2 Method of detecting load current and load current detector
10/06/1993EP0563570A1 Air-conditioning apparatus
10/05/1993US5249431 Residual coolant sensor for air conditioning system
10/05/1993US5249429 Methods of operating a refrigeration system
10/04/1993CA2084466A1 Method of detecting load current
09/1993
09/30/1993WO1993019333A1 Method and apparatus for efficiently controlling refrigeration and air conditioning systems
09/28/1993US5247989 Modulated temperature control for environmental chamber
09/28/1993US5247806 Multi-system air conditioner
09/28/1993US5247805 Fan cycling means of head pressure control
09/22/1993EP0427836B1 Process and device for monitoring the efficiency of a condenser
09/21/1993US5245837 Air-conditioning apparatus wherein a plurality of indoor units are connected to outdoor unit
09/16/1993WO1993018356A1 Control system for an air conditioning/refrigeration system
09/16/1993DE4306560A1 Part load regulation for evaporation cooling towers in refrigeration plants - using new development of progressive removal of cooling limit range to give output physical characteristic with decreasing water temp. in flow regulation
09/16/1993DE4207859A1 Refrigerant circuit for car air conditioning system - has tank evacuated by compressor to suck in refrigerant from cooling circuit if crash sensor triggers valve
09/16/1993CA2131453A1 Control system for an air conditioning/refrigeration system
09/14/1993US5243829 Low refrigerant charge detection using thermal expansion valve stroke measurement
09/07/1993US5241833 Air conditioning apparatus
09/07/1993US5241832 Automobile air conditioning system
09/07/1993CA2039337C Thermostat interface for a refrigeration system controller
09/01/1993EP0557747A2 Measuring evaporator load in an automotive air conditioning system for compressor clutch control
09/01/1993EP0557543A1 Variable speed motor control
08/1993
08/31/1993US5240651 Adiabatic modulator proportioning refrigeration controller desuperheater
08/31/1993US5239865 Process for monitoring the coolant level in a cooling system
08/18/1993CN2140503Y Explosion-proof control console of refrigerating compressor
08/10/1993US5235505 Overcurrent detector
08/04/1993EP0424474B1 Method of operating a vapour compression cycle under trans- or supercritical conditions
08/04/1993EP0397818B1 A process and device for changing the actual rotation speed of a multi-phase non-synchronous motor and a suitable motor system for applying the process
08/03/1993US5231846 Method of compressor staging for multi-compressor multi-circuited refrigeration systems
07/1993
07/28/1993CN1074747A Automatic chiller stopping squence
07/27/1993US5230223 Method and apparatus for efficiently controlling refrigeration and air conditioning systems
07/27/1993US5230222 Compressor crankcase heater control
07/21/1993EP0552127A1 Automatic chiller stopping sequence
07/20/1993US5228304 Refrigerant loss detector and alarm
07/14/1993EP0551008A1 Control apparatus for use in automotive air conditioning system
07/13/1993US5227704 Motor controls, refrigeration systems and methods of motor operation and control
07/13/1993US5226472 Modulated temperature control for environmental chamber
07/06/1993US5224355 Plural temperature adjustment apparatus for refrigerator
07/06/1993US5224352 Control device for an absorption refrigeration machine
07/01/1993DE4243634A1 Defrosting of inverter-driven air conditioning plant - using outdoor measured temperature to initiate defrost, with compressor frequency controlled to give constant defrost time
06/1993
06/30/1993CN1073760A Control method for removing frost from inverter-type air conditioner
06/29/1993US5222371 Air conditioner of multichamber type
06/29/1993US5222370 Automatic chiller stopping sequence
06/29/1993US5222368 Method of operating a transport refigeration unit
06/16/1993EP0546982A1 Compressor crankcase heater control
06/15/1993US5218837 Control system for controlling the operation of an air conditioning compressor and method of making the same
06/09/1993EP0544784A1 A differential float means and sensor means incorporating same.
06/08/1993US5216897 Preventing simultaneous start of air conditioners during recovery from a power failure
06/08/1993US5216896 Temperature control system for absorption refrigerating apparatus
06/08/1993US5216894 Control switch
06/08/1993US5216893 Device for controlling the operation of a refrigeration appliance, such as a domestic refrigerator, a freezer or the like
06/01/1993US5214930 Method for regulating the temperature of a medium by means of a temperature control loop, and a temperature-regulating device for implementing the method
06/01/1993US5214918 Refrigerator and method for indicating refrigerant amount
05/1993
05/26/1993EP0543622A2 Air conditioner and control apparatus therefor
05/26/1993CN1072492A Controlling apparatus for air conditioner
05/19/1993EP0542665A1 Automatic chiller plant balancing
05/18/1993US5211026 Combination lift piston/axial port unloader arrangement for a screw compresser
05/12/1993EP0541157A1 Refrigerating device
05/11/1993US5210684 Apparatus and method for controlling the operating frequency of compressor in air conditioning apparatus
05/11/1993US5209076 Control system for preventing compressor damage in a refrigeration system
05/11/1993US5209075 Current controlling apparatus and method for air conditioning apparatus
05/11/1993CA1317655C Temperature sensing circuit
05/05/1993EP0539944A2 Expansion valve and temperature sensing assembly therefor
05/04/1993US5207072 Unloading structure for compressor of refrigeration system
04/1993
04/27/1993US5205131 Refrigerator system with subcooling flow control
04/21/1993EP0538179A1 High to low side bypass to prevent reverse rotation
04/21/1993EP0537673A2 Method for controlling the rotational speed of a motor-compressor used in an air conditioner
04/20/1993US5203179 Control system for an air conditioning/refrigeration system
04/13/1993US5201862 Low refrigerant charge protection method
04/13/1993US5201190 Refrigerator with subcooling flow control valve
04/13/1993US5201187 System for controlling cooling equipment
04/13/1993US5201186 Method of operating a transport refrigeration unit
04/13/1993CA1315998C Refrigeration system
04/07/1993CN2129396Y Pressure-differential controller for refrigerating compressor
04/06/1993US5200644 Air conditioning system having battery for increasing efficiency
04/01/1993WO1993006423A1 Method of high-side pressure regulation in transcritical vapor compression cycle device
03/1993
03/30/1993US5197298 Sensor and control system for an automotive air conditioning system
03/23/1993US5195329 Automatic chiller plant balancing
03/23/1993US5195327 Compressor drive control method for cooling and heating dual-purpose air conditioner
03/09/1993US5191768 Automobile air conditioner compressor discharge capacity controller
03/04/1993WO1993004286A1 Capacity control for screw compressors
03/02/1993US5191643 Method and apparatus for refrigeration control and display
03/02/1993US5189886 Refrigerating system having a compressor with an internally and externally controlled variable displacement mechanism
02/1993
02/24/1993EP0528102A2 Protection circuit in inverter for refrigerators
02/23/1993US5187942 Refrigerant overcharge prevention system
02/18/1993WO1993003311A1 Temperature control apparatus and a central unit for temperature control apparatus
02/18/1993CA2114938A1 Temperature control apparatus and a central unit for temperature control apparatus
02/17/1993EP0527561A1 Apparatus and method for infusing a mixture into a closed loop system
02/16/1993US5186016 Defrosting control method and apparatus for air conditioner
02/16/1993US5186014 Low refrigerant charge detection system for a heat pump