| 摘要 |
PURPOSE:To reduce a passage resistance and improve an efficiency of heat exchanging operation by a method wherein liquid passing grooves are provided in a header under a condition in which both partition spacings communicate to each other against the interior of the header for a partition plate and a coolant condensed liquid or a lubricant oil accumulated near the partition plate is flowed out into the opposing partition spacing. CONSTITUTION:During a flowing-out through each of groups of passages, a heat exchanging operation is performed with air flowing in air flowing clearances including corrugated fins 2 between tubes 1. Although coolant 16 condensed and liquified at a group of inlet passages or lubricant oil passed through the group of passages is accumulated in an upper partition chamber 4a above a partition plate 11 of a right header 4, the oil is reached to a lower partition chamber 4b as indicated by an arrow H through a liquid passing groove 15 connecting the upper and lower partition chambers 4a and 4b, the oil is flowed toward the outlet pipe along the groove and then flowed out of the unit. Since the condensed liquid accumulated in the upper partition chamber 4a and the line close the liquid passing hole 15, the gaseous coolant is flowed into the group of intermediate passages as indicated by an arrow (h) so as to perform a heat exchanging operation. |
