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5546757 Refrigeration system with electrically controlled expansion valve
XVIII
PatentsALERT
NEWREFRTGERANTSAND REFHGERATION SYSTEMS
controller generates control signals to control valve position to provide optimum retiigerant flow for a particular operational mode of the system. The thermal expansion valve includes a heating element that is responsive to control signals from the controller and that is thermally coupled to a thermal expansion medium so that the medium expands upon application of heat from the heating element.
5546756 CONTROLLING AN ELECTRICALLY ACTUATED REFRIGERANT EXPANSION VALVE Bloomingdale, IL, UNITED Ali Dawood STATES assigned to Eaton Corporation A control system for generating a pulse width modulated control signal for an electrically operated refrigerant valve. The controller receives inputs from evaporator inlet and outlet temperature sensors (Tin, Tout) and fuzzy logic to compute the discrete value of pulse width change difference needed, based upon the DeltaT=Tout-Tin and the time rate of change of DeltaT.
5546757 REFRIGERATION SYSTEM WITH ELECTRICALLY CONTROLLED EXPANSION VALVE
5548961 TEMPERATURE STRATIFICATION-FREE STORAGE OF CRYOGENIC LIQUIDS Luger Pete; Grafwallner Franz; Peller Hehnuth; Mum1 uller Martin; Malyshev Valentin V; Galperin Sergey; Logviniouk Viacheslav P Hohenkirchen, GERMANY assigned to Deutsche Aerospace AG; Tupolev Process for the temperature stratification-free storage of a cryogenic liquid in a thermally insulated tank under gravitation conditions or under gravitation and movement conditions, which generate a liquid volume with a clearly limited, unmoving or only moderately moving liquid level as well as with a gas space located above it in the storage volume of the tank. Liquid is pumped off from the area near the bottom of the tank continuously or at time intervals, it is fed into the area of the gas space, and it is directed vertically or at an acute angle toward the liquid level there in the form of at least one high-energy jet.
Whipple Walter Amsterdam, NY, UNITED STATES assigned to General Electric Company An energy-efficient refrigeration system includes an electrically controlled thermal expansion valve disposed in the refrigerant piping so as to control flow of rei3igera.m in the retigeration system, and an expansion valve controller coupled to the expansion valve to provide control signals to the valve. The controller includes a retrigerant temperature sensing device coupled to the refrigeration system so as to sense a flow control temperature corresponding to the refrigeration temperature at a flow measurement site so that the
5553377 METHOD OF MAKING REFRIGERANT TUBES FOR HEAT EXCHANGERS Hirano Hirosaburo; Yamamoto Yuji; Ito Shinji Tochigi, JAPAN assigned to Showa Aluminum Corporation
PatentsALERT
NEWREFRTGERANTSAND REFHGERATION SYSTEMS
controller generates control signals to control valve position to provide optimum retiigerant flow for a particular operational mode of the system. The thermal expansion valve includes a heating element that is responsive to control signals from the controller and that is thermally coupled to a thermal expansion medium so that the medium expands upon application of heat from the heating element.
5546756 CONTROLLING AN ELECTRICALLY ACTUATED REFRIGERANT EXPANSION VALVE Bloomingdale, IL, UNITED Ali Dawood STATES assigned to Eaton Corporation A control system for generating a pulse width modulated control signal for an electrically operated refrigerant valve. The controller receives inputs from evaporator inlet and outlet temperature sensors (Tin, Tout) and fuzzy logic to compute the discrete value of pulse width change difference needed, based upon the DeltaT=Tout-Tin and the time rate of change of DeltaT.
5546757 REFRIGERATION SYSTEM WITH ELECTRICALLY CONTROLLED EXPANSION VALVE
5548961 TEMPERATURE STRATIFICATION-FREE STORAGE OF CRYOGENIC LIQUIDS Luger Pete; Grafwallner Franz; Peller Hehnuth; Mum1 uller Martin; Malyshev Valentin V; Galperin Sergey; Logviniouk Viacheslav P Hohenkirchen, GERMANY assigned to Deutsche Aerospace AG; Tupolev Process for the temperature stratification-free storage of a cryogenic liquid in a thermally insulated tank under gravitation conditions or under gravitation and movement conditions, which generate a liquid volume with a clearly limited, unmoving or only moderately moving liquid level as well as with a gas space located above it in the storage volume of the tank. Liquid is pumped off from the area near the bottom of the tank continuously or at time intervals, it is fed into the area of the gas space, and it is directed vertically or at an acute angle toward the liquid level there in the form of at least one high-energy jet.
Whipple Walter Amsterdam, NY, UNITED STATES assigned to General Electric Company An energy-efficient refrigeration system includes an electrically controlled thermal expansion valve disposed in the refrigerant piping so as to control flow of rei3igera.m in the retigeration system, and an expansion valve controller coupled to the expansion valve to provide control signals to the valve. The controller includes a retrigerant temperature sensing device coupled to the refrigeration system so as to sense a flow control temperature corresponding to the refrigeration temperature at a flow measurement site so that the
5553377 METHOD OF MAKING REFRIGERANT TUBES FOR HEAT EXCHANGERS Hirano Hirosaburo; Yamamoto Yuji; Ito Shinji Tochigi, JAPAN assigned to Showa Aluminum Corporation