Refrigeration – Automatic control – Selective heating or cooling
Patent
1987-02-27
1989-04-11
Tanner, Harry B.
Refrigeration
Automatic control
Selective heating or cooling
62126, 62158, 622284, 622285, 62229, F25B 100, F25B 4900, G05D 2320
Patent
active
048194417
ABSTRACT:
A ratiometric temperature controller for a transport refrigeration system, and a method of controlling the load temperature of a transport refrigeration system with digital signals, without the necessity of utilizing a digital computer. The method, implemented by the ratiometric controller, includes the steps of providing an analog ratio between the load temperature and a selected set point temperature, converting the analog ratio to a digital signal, and providing a logic array which is programmed to provide a plurality of transport refrigeration system control signals in response to predetermined values of the digital signal.
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Lackey D. R.
Tanner Harry B.
Thermo King Corporation
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