Back to results
US 11,371,515 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.
Claims13
A regenerative blower comprising:
- a housing;
- a first port and second port in the housing providing an inlet and outlet;
- an airflow channel extending between the first and second 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;
- an interrupter between the first and second ports to limit airflow from the second port to the first port, wherein the housing comprises an aperture that provides a third port;
- and
- wherein the aperture is an outlet from the impeller channel and/or the airflow channel under relatively low flow conditions, and an inlet under relatively high flow conditions.
5 more elements
Dependencies are inferred from the claim text.