| 摘要 |
A heat exchanger for mixtures of air and solid particles, particularly for woodworking shops, poultry farms and industrial environments of the like. The heat exchanger comprises a bank of staggered tubes through which warm air is exhausted, a casing with baffles enclosing the bank of tubes such that fresh air is forced between tubes in two or more successive passes, a series of cone-scrapper assemblies equally spaced on a rod inside each tube, and a pull frame connecting all rods, for reciprocating all scrapers in harmony.
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