| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigerator in which heat transfer coefficient of an evaporator is raised by improving release of bubbles from refrigerant boiled in a vessel as well as distribution of liquid refrigerant, and thereby attain high cooling efficiency. SOLUTION: An evaporator 12 comprises a vessel 14 for introducing thereinto refrigerant and a number of heating tubes 15 arranged being gathered into a bunch in the vessel for allowing cold water to flow therethrough. The heating tubes 15 are divided into a plurality of tube banks A to I, and these tube banks A to I are arranged in a zigzag manner with an interval therebetween. Due to such an arrangement, bubbles generated around the heating tubes 15 located in a lower level, flow up meandering through the tube banks, whereby the heating tubes 15 arranged in the central portion of a tube bank are less affected by the bubbles. Thus, heat transfer coefficient is prevented from being lowered.
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