METHOD AND SYSTEM FOR CONTROLLING THE INITIATION OF A FREEZE CYCLE PRE-SET TIME IN AN ICE MAKER

摘要

A novel control logic for an individual cube spray type ice machine. The duration of the freeze cycle is able to adapt to changes in inlet water temperature, changes in ambient air temperature, and the impact of warm temperatures of internal ice making parts within the ice machine due to off cycle periods. This is accomplished through a combination of starting a freeze time period only after the water temperature for the volume of water circulating over the evaporator has reached approximately 32° F., and a freeze time period value that is a function of the refrigerant temperature leaving the condenser at the time where the water reaches approximately 32° F.

主权项

1. An ice making machine comprising:
a heat exchange system comprising an evaporator and a condenser configured to make ice pieces with water applied to said evaporator during a freeze cycle; and a controller that controls a start time and an end time of the freeze cycle, wherein the start time begins only if a temperature of said water is 32 degrees F. or lower and the end time is based on a temperature of refrigerant exiting said condenser when the start time begins.