| 摘要 |
The apparatus comprises a parallelepipedal casing 1 arranged in order to be interposed in a rectangular- section pipe incorporated into an air-conditioning installation, which has two internal partitions 4-4' parallel to their open loads, between which are two helicocentrifugal fans 10-11 which are identical and independent and which face openings 7-13 of a diameter coinciding with that of the corresponding cylindrical tubular casings 5 provided in said partitions. <IMAGE>
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