One kind of pneumatic motor

The present invention provides a pneumatic motor, comprising: a housing having a power output side and the exhaust side, close to the power output side of the intake port is provided on the housing; provided, at the inner surface of the housing unit, which outer contour streamlined to reduce drag during the high pressure air movement, the gas chamber is formed between the housing and the surface elements, so that the high pressure gas to enter the housing through the upper air inlet to the air chamber; spindle, one end is the force output end, through the curved section extending out of the housing and the power output from the side of the housing; a plurality of impellers connected in series on the spindle, and closer to the discharge unit with respect to the curved surface gas-side, each group including a stator Ye Lun and Ye Lun rotor Ye Lun, wherein the intake port through the housing into the high pressure air plenum is formed between the housing and the unit is guided to the surfaces along the curved surface of said plurality of unit impellers, rotor Ye Lun driving Ye Lun group is rotated so as to drive the rotation of the spindle.