Pumps – Condition responsive control of pump drive motor – Plural pumps having separate drive motors – supply sources,...
Patent
1985-01-04
1986-04-08
Freeh, William L.
Pumps
Condition responsive control of pump drive motor
Plural pumps having separate drive motors, supply sources,...
417 38, 417 53, F04B 4902, F04B 4906, F04B 4106
Patent
active
045809470
ABSTRACT:
Disclosed is a method of controlling the operation of a plurality of compressors each having at least one capacity controller capable of changing the discharge rate of the compressor in a stepped manner in such a manner as to provide a total discharge rate just meeting the load demand which varies momentarily. In this method, the control system is divided into a capacity control loop for responding to comparatively small load variance and a compressor control loop for responding to a comparatively large load variance. The capacity control loop is further divided into a sub-loop for capacity controllers of a compressor which has worked longest and which is to be stopped first and a sub-loop for the capacity controllers of other compressors. The unloading operation is commenced preferentially with the sub-loop for the capacity controllers of the compressor to be stopped first, while the on-loading operation is made first with the sub-loop for the capacity controllers of other compressors.
REFERENCES:
patent: 4502842 (1985-03-01), Currier et al.
Konishi Mitsuji
Shibata Yozo
Freeh William L.
Hitachi , Ltd.
LandOfFree
Method of controlling operation of a plurality of compressors does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of controlling operation of a plurality of compressors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of controlling operation of a plurality of compressors will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2063251