F - Mech Eng,Light,Heat,Weapons – 23 – N
Patent
F - Mech Eng,Light,Heat,Weapons
23
N
F23N 5/20 (2006.01)
Patent
CA 2431411
Improved lockout control in oil primary controllers for oil heating systems which allows a reasonable number of user resets and ignition retries in the event of lockout while minimizing the unwanted accumulation of oil in the combustion chamber of the heating system. When the oil primary goes into lockout mode due to failure of combustion to take place, the oil primary is placed in a restricted mode of operation in which a limited number of reset activations and combustion retries may be attempted. If they are unsuccessful, a waiting time interval is then imposed between further successive attempts. The lockout or trial for ignition time may also be reduced for subsequent attempts, to minimize flooding. Normal operation is returned once a successful combustion cycle has been achieved.
L'invention porte sur une commande améliorée de blocage pour circuit de combustible de chaudières à mazout permettant un nombre raisonnable de RàZ par l'utilisateur et de tentatives de réallumage, tout en réduisant l'accumulation indésirable de mazout dans la chambre de combustion de la chaudière. Lorsque le circuit de combustible se bloque en raison d'une défaillance de la combustion, il se place en mode de fonctionnement restreint permettant un nombre limité de RàZ et de tentatives de réallumage; si elles s'avèrent infructueuses une période d'attente est imposée entre les nouvelles tentatives. Afin de réduire le noyage du brûleur on peut également réduire le temps de blocage ou d'essai de l'allumage pour les tentatives suivantes. On revient au fonctionnement normal sitôt après un cycle de combustion normal.
Melcher Amy L.
Simons Richard W.
Troost Henry E. IV
Gowling Lafleur Henderson Llp
Honeywell International Inc.
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