Centrifugal fluid pump assembly with flow rate calculating...

Details Centrifugal fluid pump assembly with flow rate calculating... Centrifugal fluid pump assembly with flow rate calculating...

2006-04-25

2006-04-25

Freay, Charles G. (Department: 3746)

Pumps

Motor driven

Electric or magnetic motor

C417S044110, C417S293000, C417S022000, C417S024000, C417S032000

Reexamination Certificate

active

07033147

ABSTRACT:
A centrifugal fluid pump assembly includes a body section and a control mechanism 6. The body section includes a housing, an impeller rotatable within the housing, and a motor for rotating the impeller. The pump assembly includes a motor current flow rate-related data storage section for storing, for a plurality of different predetermined viscosities, predetermined viscosity-related flow rate data formed from a plurality of motor current flow rate relation data at a plurality of different impeller rotational speeds at predetermined fluid viscosity, a fluid measurement data inputting section, an impeller rotational speed measurement function, a motor current measurement function, and a flow rate calculating section58for using a fluid viscosity value, an impeller rotational speed value, a measured motor current and data stored in the motor current flow rate-related data storage section to calculate a fluid flow rate.

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