Cross-flow fan, electronic device including cross-flow fan, and impeller used for cross-flow fan

摘要

A cross-flow fan (10) including a plurality of impellers (11a to 11g) connected in a direction of a rotation axis, each of the impellers (11a to 11g) including: a plurality of blades (12a to 12r); a first connection portion (13) having at least one projection; and a second connection portion (14) having concavities in a larger quantity than the projection, wherein, in a connection between the first connection portion (13) of one of the impellers (11a to 11g) and the second connection portion (14) of another one of the impellers (11a to 11g), the projection of the one of the impellers (11a to 11g) and one part of the concavities of the other one of the impellers (11a to 11g) are fitted to each other in one fitted state among N (N is an integer not smaller than two) ways of fitted states of having a matched rotation axis.

主权项

1. A cross-flow fan comprising a plurality of impellers connected in a direction of a rotation axis, each of the impellers including:
a plurality of blades; a first connection portion having at least one projection; and a second connection portion having concavities in a larger quantity than the projection, wherein, in a connection between the first connection portion of one of the impellers and the second connection portion of another one of the impellers, the projection of the one of the impellers and one part of the concavities of the another one of the impellers are fitted to each other in one fitted state among N (N is an integer not smaller than two) ways of fitted states of having a matched rotation axis.