Casing, driving device and air supply equipment

The utility model generally relates to the technical field of motors, in particular to a machine shell, a driving device and air supply equipment, the machine shell is provided with a first air hole and a second air hole which are oppositely arranged, the first air hole and the second air hole are used for air to enter and exit from the machine shell, and meanwhile a third air hole is formed in a third wall part between a first wall part and a second wall part. The third air hole is provided with a flow guide piece which guides air flow to enter the machine shell from the third air hole to cool and dissipate heat of motor parts in the machine shell, for example, when the machine shell serves as a machine shell of a fan motor, a motor rotating shaft stretches out of the machine shell from the second wall part, the fan blades are located on one side of the second wall part of the machine shell, and when the fan blades rotate, air flow on the peripheral side of the machine shell flows to the fan blades. Air flow