A miniature diagonal blower with axial inward flow and radial outward flow is disclosed. The blower comprises a drive motor having a shaft stub and a motor housing, a fanwheel including a hub fitted with fan blades, said hub being mounted on the shaft stub of the drive motor, a fanwheel housing surrounding the fanwheel without contacting said fanwheel and being provided with recesses for the inward flow and outward flow, a flanged surface associated with the motor housing, said flanged surface projecting on the outward flow side beyond the fanwheel toward the inward flow, said fanwheel housing being provided with support legs distributed about the circumference of the fanwheel in the vicinity of the outward flow, said legs delimiting recesses located between them for the outward flow and being mounted by their soles on said flanged surface means associated with the motor housing with fastening means.