| 摘要 |
355,039. Surface heat exchange apparatus. McKEAN, J. G., Westerhill, Mount Vernon, Lanarkshire, and JONES, R. F., 239, Auldhouse Road, Newlands, Glasgow. Aug. 28, 1930, No. 25665. [Class 64 (iii).] Baffles or retarders 3 for the tubes 2 of air heaters through which pass the waste gases from a boiler furnace are supported by two curved spring blades 1 which normally lie beyond the upper end of the tube spaced apart a distance greater than the diameter of the tube. The blades are rounded at 1<2> so that when pressed together they may be passed through the tube. The blades may be formed with a flat part 1<3> secured to the end of the retarder by rivets 4 or the retarder may comprise a twisted blade having its upper end split, curved and spread into the desired shape. |
