Radial fans with efficiency regulation during their work using variational geometry of the rotor have not been used in industries until now, despite the fact that this is the most economically effective regulation method. One of the causes for this was the lack of a convenient method of transferring drive to moving blades of the fan. This paper presents an innovative method of transferring drive on the blades using a differential planetary gear. The construction is described, and a strength calculation methodology and tests confirming correctness of work are shown as well. The presented solution can become a new standard in the construction of energy fans.
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