The invention discloses a wind pipe machine and relates to the technical field of air conditioners. The wind pipe machine is invented for solving the problem that in the prior art, when a wind pipe machine works, fins of an evaporator produce abnormal sounds. The wind pipe machine comprises a machine shell. A centrifugal fan and an evaporator are arranged in the machine shell. The centrifugal fan comprises a volute and an impeller arranged in the volute. An air outlet of the volute is opposite to the evaporator. A flow guide bar is arranged at the position of the air outlet of the volute, and the extending direction of the flow guide bar is parallel to the rotating center line of the impeller. At least one part of the flow guide bar is located on the air outlet route tangent to the edge of the impeller. The wind pipe machine can be used for air conditioner indoor units.