Patent ID: 11859641
Assignee: nan
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  G | IPC F  G

Claim 22:
23. An air blower, the air blower comprising:
an intake housing comprising an inlet, the inlet positioned to receive air into the air blower;
an impeller, the impeller positioned to draw the air through the intake housing and into the impeller;
an outlet, the outlet positioned to receive air from the impeller and expel the air from the air blower;
a flow modulator tube assembly positioned between the intake housing and the impeller, wherein the flow modulator tube assembly comprises a shell surrounding a plurality of vanes positioned within the shell, wherein the vanes define a plurality of paths within the shell that are fluidically isolated from one another;
a sound damper positioned in the intake housing, wherein the sound damper has a surface that is positioned to receive sound from the flow modulator tube assembly;
one or more baffles positioned within the intake housing, wherein each of the one or more baffles comprises an angled wall positioned at an angle relative to the surface of the sound damper such that the one or more baffles direct air from the intake housing into the flow modulator tube assembly;
wherein the paths of the flow modulator tube assembly direct the air to the impeller and direct sound to the sound damper.