Pumps – Condition responsive control of pump drive motor – Responsive to accumulation of pumped liquid in receiver
Patent
1987-10-05
1989-02-28
Freeh, William L.
Pumps
Condition responsive control of pump drive motor
Responsive to accumulation of pumped liquid in receiver
417 45, 141116, F04B 4900, F04B 4908, B65B 5700
Patent
active
048080780
ABSTRACT:
A liquid flow system comprising a bidirectional liquid pump, a bidirectional electric motor coupled to drive the pump, and a liquid flow line having the pump connected therein. The system further comprises a motor control circuit connected to power the motor in either the forward or the reverse direction. The control circuit includes a switch for connecting the motor windings to the power lines, the switch being operable to instantly reverse the power connections when the motor is operating in the forward direction and thereby powering the motor-pump to an instant stop and then immediately powering the motor in the reverse direction. The pump thereby instantly reverses the liquid flow in the flow line and abruptly terminates the flow. To quickly start the flow again in the forward direction later on, a priming loop is connected to the pressure side of the pump, so that the pump is able quickly to develop pump pressure.
REFERENCES:
patent: 1827416 (1931-10-01), Birdsall
patent: 1920749 (1933-08-01), Hutt
patent: 1927799 (1933-09-01), Mann
patent: 2886756 (1959-05-01), Schaefer
patent: 3269325 (1966-08-01), Schwed et al.
patent: 3578880 (1971-05-01), Cygnor
patent: 3767987 (1973-10-01), Mitsui et al.
patent: 4067663 (1978-01-01), Brooks et al.
patent: 4634347 (1987-01-01), Gauffin et al.
patent: 4643650 (1987-02-01), Khakzad-Ghami
patent: 4687982 (1987-08-01), Palaniappan
Havens Terry L.
Park Robert E.
Freeh William L.
Phoenix Park Systems
LandOfFree
Pump control system for instantly reversing the drive motor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pump control system for instantly reversing the drive motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pump control system for instantly reversing the drive motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1362736