PURPOSE: To aim at enhancing the efficiency of air blow of a motor fan, by providing a casing which defines a communication passage together with an air guide in the motor fan, and by forming, in the air guide, a circular wall for guiding air to the top part of the communication passage.
CONSTITUTION: An air guide 30 and passages 31 are formed in the outer peripheral part of an impeller 21 in a motor fan. A circular wall 41 for guiding cischarge air to the top part of the communication passage thereof or the upper parts of guide vanes 32, is integrally formed with the air guide 30. Therefore, the air stream is smoothly turned into the stream which flows downward along communication passage 33, so that the rectifying efficiency of the air guide may be maintained at a higher value, thereby it is possible to enhance the efficiency of air blow.
TORIGOE MASAO
FUKUMOTO MASAMI
YAMAURA IZUMI
| JPS5920597A | 1984-02-02 | |||
| JPS5842399B2 | 1983-09-19 | |||
| JP57142197B |