Centrifugal fan

Abstract

To provide a centrifugal fan which can secure the degree of freedom of arrangement of the centrifugal fan, for example, in a vehicle body, and which can prevent damage of a connection member.SOLUTION: In a centrifugal fan, inside a casing where an upper casing 120 and a lower casing 130 are connected by a first connection part and a second connection part, an impeller and a motor for rotating the impeller are stored. The upper casing 120 includes an upper side outer peripheral wall part 121 for forming an outer peripheral surface. The lower casing 130 includes a lower side outer peripheral wall part 131 for forming the outer peripheral surface. The first connection part includes a fitting part 122 positioned radially inside of the outer peripheral surface of the upper side outer peripheral wall part 121, and fitted inside the lower side outer peripheral wall part 131 by protruding to the lower casing 130 side. The fitting part 122 includes a claw part 123 protruding radially outside at an end part on the lower casing 130 side. The second connection part includes an engagement hole part 135 which is provided at the lower side outer peripheral wall part 131 and with which the claw part 123 is engaged.SELECTED DRAWING: Figure 4

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