| 摘要 |
PURPOSE: An evaporator for a refrigerator is provided to supply the sufficient amount of cold air under the same conditions by increasing heat exchanging efficiency of an evaporator having a refrigerant tube integral with a heat exchanging fin. CONSTITUTION: Low-temperature low-pressure refrigerant flows into an evaporator when a refrigerating cycle of a refrigerator is driven. The refrigerant absorbs external heat by flowing through corrugated portions(12a,14a) in each refrigerant tube(12,14). The contact area between the refrigerant and inside of the refrigerant tubes becomes large by the corrugated portion of the refrigerant tubes. Thereby, heat exchanging efficiency of the refrigerant is kept sufficiently. While the refrigerant is evaporated, external air flows outside the refrigerant tubes to exchange heat. The air is heat-exchanged with a heat exchanging fin(16) as well as with the refrigerant tubes. The refrigerant tubes have oval form to obtain a large contact area with external air. Therefore, a large amount of air is heat-exchanged by contact with the refrigerant tubes. The heat exchanging efficiency is improved.
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