US 11,892,000 B2
Compact low noise efficient blower for CPAP devices
Barton John Kenyon, Sydney (AU); and Peter John Sweeney, Sydney (AU)
Assigned to ResMed Motor Technologies Inc., Chatsworth, CA (US)
Filed by ResMed Motor Technologies Inc., Chatsworth, CA (US)
Filed on May 25, 2022, as Appl. No. 17/752,992.
Application 17/752,992 is a division of application No. 16/795,906, filed on Feb. 20, 2020, granted, now 11,353,030.
Application 16/795,906 is a continuation of application No. 15/594,096, filed on May 12, 2017, granted, now 10,605,246, issued on Mar. 31, 2020.
Application 15/594,096 is a continuation of application No. 14/252,915, filed on Apr. 15, 2014, granted, now 9,677,563, issued on Jun. 13, 2017.
Application 14/252,915 is a continuation of application No. 13/597,705, filed on Aug. 29, 2012, granted, now 8,734,097, issued on May 27, 2014.
Application 13/597,705 is a continuation of application No. 12/926,657, filed on Dec. 2, 2010, granted, now 8,267,648, issued on Sep. 18, 2012.
Application 12/926,657 is a continuation of application No. 12/227,637, granted, now 7,866,944, issued on Jan. 11, 2011, previously published as PCT/AU2007/000719, filed on May 24, 2007.
Claims priority of application No. 2006902781 (AU), filed on May 24, 2006.
Prior Publication US 2022/0290677 A1, Sep. 15, 2022
Int. Cl. F04D 17/16 (2006.01); F04D 25/06 (2006.01); F04D 29/58 (2006.01); F04D 17/12 (2006.01); A61M 16/00 (2006.01); F04D 29/42 (2006.01); F04D 29/44 (2006.01); F04D 29/66 (2006.01); F04D 25/08 (2006.01); F04D 29/02 (2006.01); F04D 29/28 (2006.01)
CPC F04D 17/164 (2013.01) [A61M 16/0057 (2013.01); A61M 16/0066 (2013.01); F04D 17/12 (2013.01); F04D 17/122 (2013.01); F04D 17/16 (2013.01); F04D 17/165 (2013.01); F04D 25/06 (2013.01); F04D 25/0606 (2013.01); F04D 25/08 (2013.01); F04D 29/023 (2013.01); F04D 29/281 (2013.01); F04D 29/4253 (2013.01); F04D 29/441 (2013.01); F04D 29/444 (2013.01); F04D 29/5806 (2013.01); F04D 29/667 (2013.01); A61M 2205/42 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A blower for providing a supply of air at positive pressure in a range of approximately 2cmH2O to 30cmH20, the blower comprising:
a motor having a shaft,
wherein the shaft includes a shaft axis;
at least one impeller attached to the shaft; and
a stationary component including a structure that surrounds the at least one impeller and the motor, the stationary component comprising an inlet and an outlet between which forms a flow path for a flow of air,
wherein the shaft axis, the inlet, and the outlet are co-axial,
wherein the motor includes a first side proximal the inlet and a second side distal the inlet,
wherein the stationary component is configured to direct the flow of air to flow around the motor from the first side to the second side, and
wherein at least a portion of the motor is configured to be exposed to the flow path extending from the inlet to the outlet such that the flow of air along the flow path allows cooling of the motor as air flows through the stationary component.