Patent ID: 6761040
Filing Date: 2004-07-13
Classification: F01D,F04D,F05D

Abstract:
A cross flow fan comprising:a plurality of annular rims arranged at regular intervals along a horizontal direction; and a plurality of blades on a side surface of the rim vertical thereto, and along a circumference direction of the rim, wherein pitch angles between two adjacent blades are not regular, the pitch angle taking a center of the rim as an apex, wherein a number of the blades are 32, and wherein the pitch angles of the blades arranged in succession in a clockwise or counter clockwise direction with reference to one of the blades are 12.50Â°, 9.22Â°, 10.00Â°, 12.43Â°, 11.14Â°, 14.08Â°, 8.85Â°, 12.19Â°, 12.39Â°, 9.84Â°, 11.21Â°, 9.41Â°, 14.93Â°, 10.96Â°, 8.18Â°, 11.62Â°, 12.91Â°, 12.00Â°, 11.93Â°, 10.18Â°, 8.33Â°, 12.34Â°, 10.00Â°, 13.90Â°, 9.66Â°, 12.18Â°, 11.87Â°, 12.80Â°, 11.11Â°, 11.23Â°, 8.44Â°, and 12.16Â°.