Speed control for compressors

Details Speed control for compressors Speed control for compressors

F - Mech Eng,Light,Heat,Weapons

04

C

F04C 29/00 (2006.01)

Patent

CA 2495783

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).

L'invention concerne des perfectionnements apportés à un compresseur, qui consistent à : dès que la température de sortie mesurée (TO) atteint une certaine limite de température supérieure d'hystérésis (HMAX), soit réduire la vitesse de rotation réelle de l'élément compresseur par un saut de vitesse (DS) lorsque la vitesse de rotation mesurée se situe dans la plage supérieure de vitesses, proche de la vitesse de rotation maximum (SMAX) ; soit accroître la vitesse de rotation réelle par un saut de vitesse (DS) lorsque la vitesse de rotation mesurée se situe dans la plage inférieure de vitesses, proche de la vitesse de rotation minimum (SMIN).

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