TUBE FOR HEAT EXCHANGER, MAINLY CONCERNED WITH MAINTAINING REGULAR THICKNESS OF WALL AND STIMULATING TURBULENCE OF REFRIGERANT

摘要

PURPOSE: A tube for a heat exchanger is provided to maintain regular thickness of a wall even if a hydraulic diameter is small, and stimulate turbulence of a refrigerant, thereby improving heat transfer performance. CONSTITUTION: A refrigerant passage includes a plurality of inner passages(320) formed of a first curve part(321) and a second curve part(322), and a plurality of outer passages(330) placed at both ends. The first curve part forms an inflection point by inflecting a predetermined curve(321a) and forms a turbulence stimulating element(321b) by the inflection point. The second curve part forms an inflection point by inflecting a predetermined curve(322a) and forms a turbulence stimulating element(322b) by the inflection point, wherein the turbulence stimulating element(322b) goes crisscross with the turbulence stimulating element(321b).