PUMPING DEVICE AND CONTAINING IT AN OUTDOOR AIR CONDITIONER UNIT Russian patent published in 2018 - IPC F04D29/54 

FIELD: machine building.

SUBSTANCE: present invention comprises: a belled part (11) located at a predetermined distance in the radial direction relative to the propeller fan (FN) outer circumferential end; and a diffuser part (12) mounted on the side further downstream of the belled part (11) and having a flow path area, which increases from the side closer to the downstream side towards the upstream side with an increased coefficient of increase than the coefficient of increase in the flow path in the downstream end of the belled part (11); and a stator part (2F) having a plurality of stators (22), wherein the stator part (2F) is located in the diffuser part (12).

EFFECT: proposed are pumping device capable of suppressing the occurrence of noise in the stator, while substantially increasing the pumping efficiency, and the outdoor unit using it.

20 cl, 13 dwg