| 摘要 |
1,176,215. Centrifugal fans. SOGECO-SOC. GENERALE CONDIZION-AMENTO A. R. L. May 26, 1967 [May 28, 1966], No.24497/67. Heading F1C. [Also in Division F4] An air conditioning unit has a low noise level by arranging two or more centrifugal fans in series, each fan having a low rotational speed. As shown, two fans d mounted on a shaft e driven by a motor i draw in air and pass it to a further centrifugal fan g mounted on a shaft h driven by another motor i . A heat exchanger comprising a number of finned tubes may be arranged in the air inlet or outlet and may carry hot or cold fluid. Thermostats, air filters, and humidifers may also be provided and the air inlet and outlet may be at the top, bottom, front or back of the unit. A single motor may drive both shafts e and h by a suitable transmission.
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