Pumps – Condition responsive control of pump drive motor – Single motor control element responsive to means sensing...
Patent
1990-03-01
1992-05-19
Bertsch, Richard A.
Pumps
Condition responsive control of pump drive motor
Single motor control element responsive to means sensing...
417 22, 417 58, 417212, 417207, F04B 4906
Patent
active
051143151
ABSTRACT:
An apparatus for the generation of compressed air is disclosed, where the supply of air from the compressor (1) to the user (6) is interrupted in case of preset user-side pressure. This apparatus prevents a freezing in case of low ambient temperatures in the pressure lines in which condensed water has formed. A temperature sensitive switching device (14, 29) responds to the actual ambient temperature. The switching device (14) does not stop the compressor (1) in case of a preset user-side pressure and in case of a falling below of a preset ambient temperature. The compressor (1) carries then the warmed-up air through a region of the device before discharging it into the surrounding atmosphere. The device is particularly suited for compressed-air generation plants in motor vehicles which are adapted to be used in cases of low ambient temperatures.
REFERENCES:
patent: 3101187 (1963-08-01), Campbell
patent: 4391242 (1983-07-01), Mashio
patent: 4424682 (1984-01-01), Miska et al.
patent: 4642770 (1987-02-01), Shirley
Kaltenthaler Wolfgang
Schonfeld Karl-Heinrich
Bertsch Richard A.
Kasper Horst M.
Scheuermann David W.
Wabco Westinghouse Fahrzeugbremsen GmbH
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