AXIAL FAN Russian patent published in 2025 - IPC F04D25/08 

FIELD: mechanical engineering.

SUBSTANCE: proposed axial fan can be used in thermal control systems of space rocket equipment. Existing axial fans have axial size depending on actual dimensions of parts. Axial fan comprises a housing of two parts, which flanges are installed with a predetermined axial clearance and are tightened to each other by means of fasteners, and installed in housing a bushing with straightener blades having outer spherical surface in contact with first conical surface on second part of housing and facing the first conical surface by the second conical surface on the ring located between the flat end of the collar of the first housing part and the spherical surface of the straightener blades. Axial fan is equipped with a set of spacer washers arranged inside the bore of the second part of the housing so that it is borne against the flat end of the ring on one side and against the flat end of the mounting collar on the other side.

EFFECT: independence of axial sizes of assembled fans from actual sizes of their components.

1 cl, 2 dwg