| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inexpensive twisted tube type heat exchanger with a different diameter capable of suppressing flow interruption of high temperature water even when a scale adheres thereto due to the high temperature water, and effectively exchanging heat. <P>SOLUTION: The twisted tube type heat exchanger with a different diameter includes a water pipe 3 provided with a plurality of lines of spiral grooves 2 in the outer periphery and a plurality of refrigerant pipes 4 wound along the spiral grooves 2 in the outer periphery of the water pipe 3. The outlet of the water pipe 3 continuously includes the spiral grooves 2 and the plurality of refrigerant pipes 4 in the outer periphery, and wherein an inner diameter of the outlet is larger than an inner diameter of an inlet. <P>COPYRIGHT: (C)2013,JPO&INPIT |
