F - Mech Eng,Light,Heat,Weapons – 25 – B
Patent
F - Mech Eng,Light,Heat,Weapons
25
B
F25B 49/02 (2006.01)
Patent
CA 2541512
A refrigerant cycle is provided with a control that monitors system conditions such as current, voltage or temperature at a compressor motor or refrigerant state conditions at compressor ports. A protection switch on the motor is operable to stop operation of the compressor should a system condition exceed a predetermined maximum. The control monitors a system condition, and determines that the system conditions indicates the protection switch may be actuated as the condition is moving toward the predetermined limit. Under such conditions, the control moves the compressor to a less loaded mode of operation such that it is less likely that the protection switch will actuate.
L'invention concerne un cycle de réfrigération comprenant un dispositif de commande qui surveille les conditions du système tels que le courant, la tension ou la température dans le moteur de compression ou les conditions d'état de réfrigération sur des orifices de compression. Un interrupteur de protection sur le moteur permet d'arrêter le fonctionnement du compresseur, lorsque les conditions du système dépasse un maximum prédéterminé. Le dispositif de commande surveille les conditions du système, et détermine si ces conditions indiquent l'activation de l'interrupteur de protection, lorsque les conditions s'approchent de la limite prédéterminée. Dans lesdites conditions, le dispositif de commande déplace le compresseur vers un mode de fonctionnement moins chargé, de sorte qu'il est inférieur au seuil de déclenchement du commutateur de protection.
Lifson Alexander
Taras Michael F.
Carrier Corporation
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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