| 摘要 |
<p>The present invention relates to a system for controlling the flow of refrigerating fluid on cooling or heating appliances to improve efficiency under all load and room temperature conditions, based on detection and control of the temperature difference at the terminals of the evaporators on the said appliances. The said difference in temperature is detected by two temperature sensors, one at the inlet and the other at the outlet of the evaporator, which send signals to an electronic control circuit that, in turn, controls a flow regulator so as to keep said difference temperature constant. Besides improving efficiency under all operating conditions, the said control system also prevents frosting in the return pipe connecting the evaporator to the compressor. Furthermore, on two-door or combination refrigerators with a single compressor and two evaporators, whether series or parallel connected, the present invention provides for independent operation of the two compartments as well as independent adjustment of the temperatures inside.</p> |
