Centrifugal pump
AssigneeJohnson Electric S.A.
InventorsAwade BADAFEM, Min Li
Life of this patent
Estimating the term…
Abstract
A centrifugal pump includes an electric motor, an impeller driven by the motor and a pump housing having an impeller chamber, an inlet in communication with the impeller chamber via an opening, and first and second outlets in communication with the impeller chamber. The impeller chamber has an interference structure which forms first and second flow channels in communication with the first and second outlets. The interference structure directs the fluid in the impeller chamber to flow through the first outlet via the first flow channel when the impeller rotates in a first direction or to flow through the second outlet via the second flow channel when the impeller rotates in the opposite direction.
Claims20
A centrifugal pump comprising:
- an electric motor, an impeller driven by the motor;
- and a pump housing,
- wherein the pump housing has an impeller chamber, an inlet in communication with the impeller chamber via an opening, a first outlet and a second outlet, the first outlet and the second outlet being in communication with the impeller chamber at all times;
- an interference structure is arranged within the impeller chamber and forms a first flow channel in communication with the first outlet and a second flow channel in communication with the second outlet;
- and
- the interference structure is configured to direct fluid in the impeller chamber to flow through the first outlet via the first flow channel when the impeller rotates in a first direction and to direct fluid in the impeller chamber to flow through the second outlet via the second flow channel when the impeller rotates in a second direction.
A centrifugal pump comprising:
- an electric motor;
- an impeller driven by the motor;
- a valve;
- and a pump housing,
- wherein:
- the pump housing has having an impeller chamber, an inlet in communication with the impeller chamber, a first outlet and a second outlet, a first outlet chamber formed between the first outlet and the impeller chamber and a second outlet chamber formed between the second outlet and the impeller chamber;
- the first outlet chamber is in communication with the first outlet and the second outlet chamber is in communication with the second outlet;
- a first opening is formed between the first output chamber and the impeller chamber and a second opening is formed between the second output chamber and the impeller chamber;
- and
- the valve is driven by fluid pressure to close the second opening when the impeller rotates in a first direction whereby the fluid in the impeller chamber flows through the first outlet via the first opening and the first outlet chamber and to close the first opening when the impeller rotates in a second direction whereby the fluid in the impeller chamber flows through the second outlet via the second opening and the second outlet chamber.
A centrifugal pump comprising:
- a first electric motor;
- an impeller driven by the first electric motor;
- and a pump housing having an impeller chamber, an inlet, a first outlet and a second outlet;
- a second electric motor;
- and a valve driven by the second electric motor to alternately communicate the first outlet and the second outlet with the impeller chamber.
Dependencies are inferred from the claim text.