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US 5,699,670 AGranted
Control system for a cryogenic refrigeration system
AssigneeThermo King Corporation
InventorsRomuald Martin Jurewicz, Herman H. Viegas
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AssigneeThermo King Corporation
InventorsRomuald Martin Jurewicz, Herman H. Viegas
Estimating the term…
A control system is provided for a cryogenic refrigeration system having an evaporator-heater coil, an electronically controlled valve for regulating the amount of cryogenic gas to the coil, and a vapor motor powered by the cryogenic gas that drives both an alternator for recharging the system battery, and a fan for generating an air flow through the coil and into a conditioned space. The control system includes a temperature sensor for generating an electrical signal indicative of the temperature of the conditioned space, and a microprocessor that is electrically connected to the temperature sensor, the alternator, and the electronically controlled valve for modulating the flow of cryogenic gas through the evaporator-heater coil in said vapor motor to achieve a selected set point temperature in the conditioned space, and to maintain a sufficient alternator current to effectively recharge the system battery.
A control system for a cryogenic refrigeration system of a type having an evaporator-heater coil, an electronically controlled valve for regulating an amount of cryogenic gas to said evaporator-heater coil, a vapor motor driven by said cryogenic gas coupled to both an alternator for recharging a battery, and a fan for generating an air flow through said coil and into a conditioned space, comprising:
A control system for a cryogenic refrigeration system of a type having an evaporator-heater coil, an electronically controlled valve for regulating an amount of cryogenic gas to said evaporator-heater coil, a vapor motor driven by said cryogenic gas coupled to both an alternator for recharging a battery, and a fan for generating an air flow through said coil and into a conditioned space, comprising:
Dependencies are inferred from the claim text.