Speed control for compressors

Details Speed control for compressors Speed control for compressors

2003-07-24

2008-10-28

Kramer, Devon (Department: 3746)

Pumps

Condition responsive control of pump drive motor

Responsive to pump or pump fluid temperature

C417S018000, C417S022000, C417S042000, C417S053000, C062S228400, C318S461000, C318S471000, C388S800000

Reexamination Certificate

active

07442012

ABSTRACT:
Improvements to a compressor which consists in that, as soon as the measured outlet temperature (TO) reaches a certain hysteresis upper temperature limit (HMAX), the actual rotational speed of the compressor element is either lowered with a speed jump (DS) when the measured rotational speed is situated in the higher speed range close to the maximum rotational speed (SMAX), or is increased with a speed jump (DS) when the measured rotational speed is situated in the lower speed range close to the minimum rotational speed (SMIN).

REFERENCES:
patent: 4662185 (1987-05-01), Kobayashi et al.
patent: 4897798 (1990-01-01), Cler
patent: 5782608 (1998-07-01), McKee
patent: 6416290 (2002-07-01), Yamauchi
patent: 2002/0088241 (2002-07-01), Kazuya et al.
patent: 2003/0182952 (2003-10-01), Brooke
patent: 196 49 766 (1998-04-01), None

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