| 摘要 |
PURPOSE: A refrigerant tube of heat exchanger is provided to make flow of refrigerant smooth and to improve efficiency of heat exchange. CONSTITUTION: A plurality of folded parts(3) are formed on a platy rolling pressed material(2) at fixed intervals by a compressive deformation device. Both ends of the material are joined together to form passages(4) between the folded parts. One ends of the folded parts are formed to contact with plane parts(5) of the material. A plurality of circulation grooves are formed on the folded parts of the material so that refrigerant circulates in a whole refrigerant tube to expand contacting area of the refrigerant to improve efficiency of heat exchange in an alternative instance.
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