AIR CLEANER WITH AIR TUBE Russian patent published in 2018 - IPC F04D17/02 F04D19/00 F04D29/54 

FIELD: electrical engineering.

SUBSTANCE: present invention relates to the technique of air purifiers, and more particularly to an air cleaner with an air tube. Air tube for the air cleaner comprises a duct fan in its inlet and an axial fan in its outlet, wherein, on the inner wall of the pipe, between the channel fan and the axial fan, there is formed a deflector configured to perturb the air flow, which is sucked into the pipe by means of a channel fan, is directed to the axial fan along the inner wall of the pipe and is released through the axial fan, so as to force at least a portion of the air flow directed to the axial fan, deviate from the inner wall of the tube, the deflector comprising an inwardly convex portion formed on the inner wall of the tube, the convex portion being in the form of a towering roundness, and said roundness comprises an oncoming stream side surface facing the channel fan and having an arcuate profile. In this case, the air tube comprises a normal portion and a narrowed portion whose inner diameter is smaller than the inner diameter of the normal section, the deflector comprising a surface of the oncoming stream side facing the channel fan, said surface being formed in a narrowed section near the normal section and having an arcuate profile.

EFFECT: this allows us to rationally use the resources of the axial fan, as well as improve overall efficiency.

15 cl, 16 dwg