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US 12,331,749 B2Granted
Regenerative blower
AssigneeFisher & Paykel Healthcare Limited
InventorsDonald Roy Kuriger, Johannes Nicolaas Bothma
Life of this patent
Estimating the term…
Abstract
In accordance with one aspect the present invention may comprise a regenerative blower comprising: a housing, a first port and second port in the housing, an airflow channel extending between the first and second ports for airflow between the ports, an impeller rotatable in an impeller channel to promote airflow in the airflow channel from the first port to the second port, a motor to drive the impeller, and an interrupter between the first and second ports to limit airflow from the second port to the first port.
Claims21
A regenerative blower comprising:
- a housing comprising a first port and a second port;
- an airflow channel extending between the first port and the second port, wherein the airflow channel extends along a plane;
- an impeller rotatable in an impeller channel, wherein the impeller promotes airflow in the airflow channel from the first port to the second port;
- a motor to drive the impeller;
- an interrupter between the first port and the second port to limit airflow from the second port to the first port;
- and
- wherein the first port comprises a conduit that extends from the airflow channel, the second port comprises a conduit that extends from the airflow channel, and the first port forms a spiral with the airflow channel,
- wherein the first port is inclined with respect to the plane of the airflow channel, and
- wherein the housing comprises a top housing and a bottom housing, the impeller is disposed between the top housing and the bottom housing, the motor is disposed at least partially in the bottom housing, and the top housing is open to the bottom housing, and the top housing is open to the bottom housing such that there is no plate or other barrier of the housing separating the impeller and the motor.
6 more elements
A regenerative blower comprising:
- a housing comprising a first port and a second port;
- an airflow channel extending between the first port and the second port;
- an impeller rotatable in an impeller channel, wherein the impeller promotes airflow in the airflow channel from the first port to the second port;
- a motor to drive the impeller;
- an interrupter between the first port and the second port to limit airflow from the second port to the first port;
- wherein the first port comprises a conduit that extends from the airflow channel, the second port comprises a conduit that extends from the airflow channel, and the first port forms a spiral with the airflow channel;
- wherein the first port is connected to the airflow channel in a circumferential direction relative to a rotation of the impeller;
- and
- wherein the housing comprises a top housing and a bottom housing, the impeller is disposed between the top housing and the bottom housing, the motor is disposed at least partially in the bottom housing, and the top housing is open to the bottom housing such that there is no plate or other barrier of the housing separating the impeller and the motor.
6 more elements
A regenerative blower comprising:
- a housing comprising a first port and a second port;
- an airflow channel extending between the first port and the second port;
- an impeller rotatable in an impeller channel, wherein the impeller promotes airflow in the airflow channel from the first port to the second port;
- a motor to drive the impeller, the motor comprises a rotor and the housing comprises an aperture with a diameter that is shaped to enable, during manufacture, an assembly of the rotor coupled to the impeller by a shaft to be placed in the housing through the aperture, the aperture providing a third port;
- an interrupter between the first port and the second port to limit airflow from the second port to the first port;
- and
- the first port comprising a conduit that extends from the airflow channel, the second port comprising a conduit that extends from the airflow channel, and the first port forming a spiral with the airflow channel.
4 more elements
A regenerative blower comprising:
- a housing comprising a first port and a second port, the housing comprising a top housing a bottom housing, the bottom housing comprising a bottom plate, an aperture being defined in the bottom plate of the bottom housing, the housing comprising a bottom housing cap, and the bottom housing cap comprising at least one bottom housing cap aperture;
- an airflow channel extending between the first port and the second port;
- an impeller rotatable in an impeller channel, wherein the impeller promotes airflow in the airflow channel from the first port to the second port;
- a motor to drive the impeller, the motor comprises a rotor and the aperture having a diameter that is shaped to enable, during manufacture, an assembly of the rotor coupled to the impeller by a shaft to be placed in the housing through the aperture;
- an interrupter between the first port and the second port to limit airflow from the second port to the first port;
- and
- the first port comprising a conduit that extends from the airflow channel, the second port comprising a conduit that extends from the airflow channel, and the first port forming a spiral with the airflow channel.
4 more elements
A regenerative blower comprising:
- a housing comprising a first port and a second port;
- an airflow channel extending between the first port and the second port;
- an impeller rotatable in an impeller channel, wherein the impeller promotes airflow in the airflow channel from the first port to the second port;
- a motor to drive the impeller, the motor comprises a rotor and the housing comprises an aperture with a diameter that is shaped to enable, during manufacture, an assembly of the rotor coupled to the impeller by a shaft to be placed in the housing through the aperture, the aperture defining an outlet from the impeller channel and/or the airflow channel under low flow conditions, and an inlet under high flow conditions;
- an interrupter between the first port and the second port to limit airflow from the second port to the first port;
- and
- the first port comprising a conduit that extends from the airflow channel, the second port comprising a conduit that extends from the airflow channel, and the first port forming a spiral with the airflow channel.
4 more elements
Dependencies are inferred from the claim text.