Positive airway pressure device including blower and support system therefor

Patent metadata

Field	Value
Publication number	US-11293453-B2
Application number	US-201916504531-A
Country	US
Kind code	B2
Filing date	Jul 8, 2019
Priority date	Jun 5, 2007
Publication date	Apr 5, 2022
Grant date	Apr 5, 2022

Abstract

A blower includes a stationary portion including an inlet and an outlet, a rotating portion provided to the stationary portion, and a motor adapted to drive the rotating portion. The inlet and outlet are co-axially aligned. The stationary portion includes a housing, a stator component provided to the housing, and a tube providing an interior surface. The rotating portion includes one or more bearings that are provided along the interior surface of the tube to support a rotor within the tube. In an embodiment, the blower is structured to supply air at positive pressure.

First claim

What is claimed is:

1. A positive airway pressure device for generating a supply of pressurized gas to be provided to a patient for treatment, the positive airway pressure device comprising:
an outer casing;
a blower including a housing having an inlet along an inlet side thereof and an outlet along an outlet side thereof, the inlet and the outlet being co-axially aligned,
wherein the blower is configured to draw a supply of gas into the housing through the inlet and provide a pressurized flow of gas at the outlet; and
a support system comprising an annular seal and multiple feet between the blower and the outer casing,
wherein the annular seal is provided to an outer surface of the housing and adapted to engage the outer casing to support the blower within the outer casing and separate the inlet side of the blower from the outlet side of the blower, and
wherein the multiple feet are provided to a bottom of the blower and adapted to engage a base of the outer casing.

2. The positive airway pressure device according to claim 1 , wherein the annular seal is overmolded onto the outer surface of the housing.

3. The positive airway pressure device according to claim 1 , wherein the annular seal is formed as a separate piece adapted to be attached to the outer surface of the housing.

4. The positive airway pressure device according to claim 1 , wherein the annular seal is molded of an elastomeric material.

5. The positive airway pressure device according to claim 1 , wherein the annular seal provides a seal between low and high pressure sides of the blower.

6. The positive airway pressure device according to claim 1 , wherein the annular seal suspends the blower in the outer casing.

7. The positive airway pressure device according to claim 1 , further comprising an outlet muffler volume on the outlet side of the blower defined between the annular seal and the outer casing, and an inlet muffler volume on the inlet side of the blower defined between the annular seal and the outer casing.

Assignees

• Resmed Motor Technologies Inc

Inventors

• Kenyon Barton John
• Sears David B
• Nagorny Aleksandr S
• Mebasser Samuel Aziz
• Sweeney Peter John

Classifications

• H02K7/083 Primary

  radially supporting the rotary shaft at both ends of the rotor (H02K7/086, H02K7/09 take precedence) · CPC title

• F04D25/12

  the unit being adapted for mounting in apertures · CPC title

• F04D25/0646

  Details of the stator · CPC title

• F04D29/403 Primary

  especially adapted for elastic fluid pumps · CPC title

• H02K15/043

  winding flat conductive wires or sheets · CPC title