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US 2014/0230244 A1Published application
Quiet Blower Apparatus and System and Method for Reducing Blower Noise
AssigneeResMed Limited
InventorsRobert Henry Frater, Hamish Alexander Urquhart, Dmitri Anatolievich Doudkine, Barton John Kenyon
Life of this patent
Estimating the term…
Abstract
A blower assembly including a motor, an impeller and a volute that is configured such that an inlet chamber of the volute and an outlet chamber of the volute are divided from one another by an airtight membrane and the membrane is configured to allow the transmission of pressure waves between the inlet and outlet chambers.
Claims12
1-17. (canceled)
A method for reducing noise generated by a blower, the method comprising:
- housing the blower in an enclosure which includes an inlet section including an inlet port, an intermediate section and an outlet section including an outlet port, the inlet section and the outlet section being separated by one or more flexible membranes, the outlet section having a higher pressure than the inlet section in use;
- and
- configuring the one or more flexible membranes so that the blower inlet section and blower outlet section are acoustically coupled.
Dependencies are inferred from the claim text.