A HEAT EXCHANGER HAVING DOUBLE ROW

摘要

A heat exchanger having tubes aligned in two rows is provided to differ tube pitches in front and rear rows according to positions of inlet and outlet pipes for preventing concentration of refrigerant, thereby improving heat exchange performance. In a heat exchanger having tubes aligned in two rows, a tube pitch(Ptube) between neighboring tubes(30) becomes different according to positions of inlet and outlet pipes(11,12). The tube pitch between tubes in a row(A) provided with the inlet pipe becomes decreased gradually in the lengthwise direction of upper and lower tanks(10,20) from the inlet pipe. The tube pitch between tubes in the other row(B) provided with the outlet pipe becomes increased gradually in the lengthwise direction of upper and lower tanks from the inlet pipe.