APPARATUS FOR CONTROLLING TEMPERATURE OF COOLANT OF HYDRAULIC SYSTEM

摘要

PURPOSE: An apparatus for controlling temperature of coolant of a hydraulic system is provided to improve energy efficiently of the system by allowing smooth cooling in summer, and using waste heat when an object whose temperature is to be controlled is to be heated over fixed temperature. CONSTITUTION: An apparatus includes a heat exchanger(200) dropping down temperature of coolant discharged from an object whose temperature is to be controlled; a coolant storage tank(100) storing coolant whose temperature is dropped down by the heat exchanger; a tube connecting the object, the heat exchanger and the coolant storage tank; and an evaporator(400) of a refrigerating cycle mechanism installed to contact with, or near the heat exchanger. At least one auxiliary heat exchanger(300) is installed on the tube connecting the heat exchanger and the coolant storage tank. The evaporator is additionally installed to contact with, or near the auxiliary heat exchanger. Fans(600) are installed near the evaporators to promote cooling of coolant and to cool down the coolant more.