| 摘要 |
<p>A heat exchanger for a supercritical refrigeration cycle. The heat exchanger comprises tubes (510) and tanks (520) that have hollow portions (520a) and are provided with slots (521a) into which end portions of the tubes are inserted. The sectional outline of each hollow portion in each tank has a substantially semicircle shape whose straight side corresponding to the diameter is faced to the slot side. The tank is formed by assembling together a plate body (521) where the slots are provided and a tank member (522) where curvatures structuring the hollow portions are provided. A communication concave portion (521b) in communication with the hollow portions is provided in the plate body (521). Separation members (523) partitioning the hollow portions are provided between the plate body and the tank member. Hole portions (521c, 522a) are provided in key points of the plate body and of the tank member, and projection portions (523a) inserted through the individual hole portions are provided in the partition members. The projection portions are crimped after they are inserted through the hole portions.</p> |
