Refrigerant line freeze prevention in climate control systems

Abstract

A climate control system for a vehicle with a compressor and an evaporator coupled to the compressor; the evaporator has a refrigerant line coupled thereto. The system has a blower disposed proximate the evaporator and a temperature sensor proximate the evaporator which generates a temperature signal corresponding to a temperature of the refrigerant line. There, a controller is coupled to the compressor, blower, and temperatures sensor which is programmed to control the compressor, blower, and temperature sensor. The controller decreases a speed of the blower when the temperature signal is below a first temperature threshold. The controller stops the compressor when the temperature signal is below a second temperature threshold where the second temperature threshold is less than the first temperature threshold.

Dependencies are inferred from the claim text.