DUAL PIPE TYPE INTERNAL HEAT EXCHANGER

摘要

A double pipe type internal heat exchanger is provided to minimize the pressure loss of coolant flowing in and out of the outer pipe even when bending the double pipe depending on the engine room structure of vehicle. A double pipe type internal heat exchanger(100) comprises an inner pipe(110) forming a low pressure channel for low temperature and low pressure coolant, and an outer pipe(120) which is combined on the outer circumference of the inner pipe and forms a high pressure channel for high pressure and high temperature coolant. The outer pipe includes circular inlet and outlet(121,122) formed on both ends, and a spiral section(123) which is formed between the inlet and outlet and forms a high pressure channel between with the inner pipe.