Pumps – With condition responsive pumped fluid control – Inlet throttle or stop valve
Patent
1987-04-14
1987-12-08
Freeh, William L.
Pumps
With condition responsive pumped fluid control
Inlet throttle or stop valve
417310, F04B 4900
Patent
active
047116170
ABSTRACT:
In a rotary compressor for compressing a refrigerant gas by a compressor element adapted to be rotated by an electric motor, the improvement comprises a cylindrical member provided inside or outside the closed container and communicated with the first intake passage and with the first discharge passage; a second intake passage communicated with the cylindrical member and with the compressor element; a second discharge passage communicated with the cylindrical member and within the closed container; a first communication passage for communicating the second intake passage with one end of the cylindrical member; a second communication passage for communicating the closed container with the other end of the cylindrical member; and a valve member provided in the cylindrical member; and a spring which urges the end of the valve near the first communication passage; the valve member being moved to a first position to communicate the first intake pasage with the second intake passage and also communicate the first discharge passage with the second discharge passage when one end of the valve member is urged by a discharge pressure of the refrigerant gas, through the second communication passage while the valve member being moved to a second position to make the first intake passage out of communication with the second intake passage and also make the first discharge passage out of communication with the second discharge passage when the other end of the valve member is urged by a reverse currernt pressure of the refrigerant gas from the first communication passage and a spring pressure.
REFERENCES:
patent: 3224662 (1965-12-01), Oldberg
patent: 4237926 (1980-12-01), Walker
patent: 4522038 (1983-05-01), Ozu
patent: 4556863 (1986-01-01), Goto et al.
Asami Kazutomo
Ishijima Koji
Sano Fumiaki
Wada Fumio
Freeh William L.
Mitsubishi Denki & Kabushiki Kaisha
LandOfFree
Rotary compressor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rotary compressor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotary compressor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-21164