Pumps – Condition responsive control of pump drive motor – Plural pumps having separate drive motors – supply sources,...
Patent
1998-11-25
2000-11-07
Kamen, Noah P.
Pumps
Condition responsive control of pump drive motor
Plural pumps having separate drive motors, supply sources,...
417 8, F04B 4106
Patent
active
061427403
ABSTRACT:
A compression system includes a sequencing switch movable between a first switch position and a second switch position for alternating a first compressor and a second compressor between a lead mode and a lag mode so that one of the compressors is always in the lead mode and one of the compressors is always in the lag mode. The compression system includes a first compressor including a first microcontroller having a data entry device for establishing a lead mode pressure range and a lag mode pressure range. The first compressor includes a first pressure gauge for sensing the pressure level of compressed fluid discharged therefrom and for relaying the sensed pressure level to the first microcontroller. The first microcontroller continuously monitors the pressure level of the compressed fluid discharged from the first compressor and compares the pressure level of the compressed fluid to the lead mode pressure range and the lag mode pressure range. The second compressor includes a second microcontroller having a data entry device for establishing a lead mode pressure range and a lag mode pressure range, the second compressor including a second pressure gauge for sensing a pressure level of compressed fluid discharged therefrom and for relaying the sensed pressure level to the second microcontroller. The second microcontroller continuously monitors the pressure level of the compressed fluid discharged from the second compressor and compares the sensed pressure level of the compressed fluid to the lead mode pressure range and the lag mode pressure range. The first microcontroller and the first pressure gauge function independently of the second microcontroller and the second pressure gauge, thereby obviating the need for additional external controllers which are generally complex and costly.
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Gimie Mahmoud M
Ingersoll-Rand Company
Kamen Noah P.
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