| 摘要 |
A primary thermostat is provided in a fryer of the type comprising a frypot containing cooking oil, a heater, heat control switching means for operating the heater and a thermostat including a temperature probe, the fryer thermostat being used as a backup to the primary thermostat. The primary thermostat utilizes the signal of a temperature probe associated with a cooking computer which calculates the cooking time period for food items cooked in the fryer. The primary thermostat includes comparators monitoring for open or shorted conditions of the cooking computer temperature probe, and a control transfer relay which switches thermostatic control of the fryer from the primary to the backup fryer thermostat in the event of probe failure. The primary thermostat also includes a temperature selection switch for selecting a desired temperature of the cooking oil and temperature control circuitry for operating the fryer heater to maintain the desired temperature.
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