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

Claim 17:
18. A system for providing cooling air or ventilation, the system comprising:
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 sound damper positioned in the intake housing;
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 a surface of the sound damper such that the one or more baffles direct air from the intake housing into a flow modulator tube assembly;
the flow modulator tube assembly positioned to receive the air from the inlet and direct the air to the impeller, wherein the flow modulator tube assembly comprises a plurality of vanes positioned within a shell, the vanes extending axially along a length of the shell, wherein the vanes define a plurality of separate air flow paths that extend through the flow modulator tube assembly, from a first end of the flow modulator tube assembly to a second end of the flow modulator tube assembly, and that are fluidically isolated from one another between the first and second ends, wherein the vanes contact the shell along the length of the shell and divide the air and sound into the plurality of separate air flow paths that comprise void spaces between the vanes, wherein the vanes straighten the flow of the air through the flow modulator tube assembly and direct the air to the impeller, and wherein the vanes straighten the propagation of sound through the flow modulator tube assembly and direct sound along a path to impact with the sound damper; and

wherein:
(i) the outlet of the air blower is fluidly coupled with equipment to provide air into the equipment; or
(ii) the outlet of the air blower is fluidly coupled with a local environment to provide air into the local environment.