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US 11,788,548 B2Granted
Quiet blower apparatus and system and method for reducing blower noise
AssigneeResMed Pty Ltd
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.
Claims21
A system for reducing noise generated by a blower, the system comprising:
- a blower, comprising a motor, an impeller, a blower inlet, and a blower outlet, wherein the blower inlet is a first distance from the blower outlet;
- an enclosure in which the blower is mounted, the enclosure being divided into an inlet section including an enclosure air inlet and an outlet section including an enclosure air outlet, the outlet section having a higher pressure than the inlet section in use, wherein the enclosure air inlet is a second distance from the enclosure air outlet, and the first distance is the same as the second distance;
- and
- a separator formed with a membrane and configured to divide the enclosure into the inlet section and the outlet section and to provide acoustic communication between the inlet section and the outlet section.
1 more element
A system for reducing noise generated by a blower, the system comprising:
- a blower, comprising a motor, one or more impellers, a blower inlet, and a blower outlet, wherein the blower inlet is a first distance from the blower outlet;
- an enclosure in which the blower is mounted, the enclosure being divided into (a) an inlet section including an enclosure air inlet, (b) an outlet section including an enclosure air outlet and having a higher pressure than the inlet section when in use, and (c) one or more intermediate sections located between the inlet section and the outlet section, wherein the enclosure air inlet is a second distance from the enclosure air outlet, and the first distance is the same as the second distance;
- and
- one or more separators formed with one or more membranes, the one or more separators each configured to divide the enclosure and to provide acoustic communication between respective two sections out of the inlet section, the outlet section and at least one of the one or more intermediate sections.
1 more element
Dependencies are inferred from the claim text.