| 摘要 |
PURPOSE:To improve manufacturing efficiency by a method wherein at least one of two fluid flow paths, divided by a flat plate, is formed by a spacer made by aluminum extruded profile and the flat plate so as to constitute the flow path by left and right side walls, made by spacers, and a horizontal connecting wall having fluid-passing holes. CONSTITUTION:Both ends of an oil flow path A of the heat exchanger 1 are communicated with a header tank while both ends of flow path B are opened and air is flowed through the flow path B by forced ventilation or natural ventilation. When the oil flows through the flow path A, the oil contacts with the multiple protuberances 6 of the spacer 3 and flows into passing holes 7 from both left and right sides of the upper protuberances 6a under flowing downwardly, while the oil flows into the passing holes 7 from both left and right sides of the lower protuberances 6b under flowing upwardly, whereby the oil moves through the flow path A under being mixed and heat exchanging efficiency is increased remarkably. Accordingly, the number of components may be reduced and setting time may be shortened remarkably.
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