Abstract
This paper concerns a theoretical and experimental study of cross flow fan with inner guide apparatus. Effects of fan geometry on the performance are investigated. Theoretically, the inner apparatus provides a shockless flow on the inner periphery of the impeller, which has an arbitrary inner blade angle. A series of experiments have been conducted using four types of impellers with different inner blade angles β and inner vanes, whose shapes are identical to theoretical stream lines. One apparatus designed with a single vane and an impeller of β1=100°produced a high and stable performance curve sloping downwards to the flow rate.
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