Pumps – With condition responsive pumped fluid control – Plural separate sensing means for a single fluid controller
Patent
1985-04-05
1986-09-02
Vrablik, John J.
Pumps
With condition responsive pumped fluid control
Plural separate sensing means for a single fluid controller
417310, 418 15, 418201, F04B 4906, F01C 116
Patent
active
046093290
ABSTRACT:
A variable volume ratio screw compressor has a side load inlet port for the injection of refrigerant vapor into the interlobe volume. In order to improve efficiency, overcompression and undercompression are avoided by varying the location of the radial discharge port to give the compressor an internal volume ratio matched to the pressure of the system in which the compressor operates. This is accomplished in the present application by locating a pressure sensing port no earlier than and preferably later in the compression than the side load injection port, but early enough in the compression that it will not communicate with the discharge port. The pressure that is sensed in the sensing port is used to predict the actual peak pressure in order that maximum efficiency may be obtained as a result of matching the internal volume ratio to the pressure ratio of the system.
REFERENCES:
patent: Re29283 (1977-06-01), Shaw
patent: 1818258 (1931-08-01), Isaacks
patent: 2519913 (1950-08-01), Lysholm
patent: 3432089 (1969-03-01), Schibbye
Pillis Joseph W.
Wile Hans C.
Frick Company
Vrablik John J.
LandOfFree
Micro-processor control of a movable slide stop and a movable sl does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Micro-processor control of a movable slide stop and a movable sl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Micro-processor control of a movable slide stop and a movable sl will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1095003