| 摘要 |
A thermoelectric water chiller system for cooling fluids, and including a cold sink which defines quiescent areas where convection currents are minimized to facilitate ice formation around the cold sink is provided. The cold sink cooperates with water held in a sealed tank. A cover member which covers the cold sink can be employed which would cooperate with the tank to form a fluid-tight seal therewith. Components needing periodic cleaning are preferably removable from the system, but the tank could be permanently installed. A fan-cooled thermoelectric module assembly is used to form the ice block adjacent the bottom of the tank which chills the water. A variable-speed fan and current to the thermoelectric module are controlled by a control circuit with inputs from various temperature sensors positioned on and within various portions of the chiller system, including sensors to monitor ambient air temperature about the chiller system. Based upon sensed temperatures, or combinations thereof, the control circuit can slow the fan speed, reduce current to the thermoelectric module, or both, when chilling to a desired temperature is achieved, and to maintain the ice block at an optimum size.
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