| 摘要 |
1463047 Heat exchangers NIPPONDENSO CO Ltd 25 April 1975 [10 May 1974] 17291/75 Heading F4S A heat exchanger comprises a turbulating fin element 1 in a fluid passage in contact with the walls 4, 5 thereof, the fin element comprising a sheet (e.g. of brass or aluminium) having rows (e.g. I, II, III, IV) of slits formed therein, the sheet material between the slits of each row being displaced to one side of the plane 1c of the sheet to form projections 1a inclined at an angle # (e.g. 35 degrees) to the line of the row and arranged in groups in which all the projections of a group are similarly inclined, the projections of adjacent groups in any one row being inclined in different directions, and the projections of adjacent groups belonging to different rows being inclined in the same direction. As shown, each projection 1a comprises a top portion 1b which is parallel to the plane of the sheet, and side portions 1d inclined thereto at an angleα(e.g. 80 degrees) and connecting the top portion 1b of the projection to that part which lies in the plane 1c of the sheet. |
