APPARATUS FOR PREVENTING COMPRESSION OF LIQUID WORKING FLUID FOR COMPRESSOR

PURPOSE: An apparatus for preventing liquid working fluid compression is provided to lengthen useful life of compressor by allowing the compressor to compress the gas working fluid only. CONSTITUTION: A cylinder(4) is installed in a front housing(2) and a rear housing(3), and a plurality of pistons(9) are accommodated into the cylinder. The piston reciprocates in accordance with the rotation of a shaft(7), and thus-introduced working fluid is compressed in a high pressure chamber(12) of the front housing and rear housing and discharged to outside. An apparatus for preventing liquid working fluid compression includes a heater(16) mounted at the lower side wall of a low pressure chamber(15) of the rear housing, and a temperature sensor(17) mounted at the inner wall of the rear housing. When the temperature of interior of the rear housing is lower than a predetermined temperature and the working fluid turns into a liquid state, the temperature sensor senses the temperature and the heater operates to phase-change the liquid working fluid into gas working fluid. When the heater overheats, the temperature sensor senses the temperature of the interior of the housing and stops operation of the heater.