公开(公告)号：EP1394469A3

公开(公告)日：2004-08-04

申请号：EP03405626.7

申请日：2003-08-29

申请人： RB Controls Co., Ltd. ,  Rinnai Corporation

发明人： Nozawa, Koji ,  Honda, Katsutoshi

IPC分类号： F23N1/00 ,  F23N5/24 ,  F23N5/10

CPC分类号： F23N5/102 ,  F23N5/20 ,  F23N5/242 ,  F23N2023/08 ,  F23N2027/16 ,  F23N2027/36 ,  F23N2031/10 ,  F23N2035/14

摘要： A safety circuit 31, which compulsorily closes an on-off valve for supplying a gas to a burner when a microcomputer for performing a combustion control is in an abnormal condition, does not operate unless abnormality occurs to the microcomputer 1, and therefore even when the safety circuit 31 is out of order, an ignition operation is performed as it is. A transistor 4 is not turned off until a fixed time elapses from a start of an ignition sequence in the safety circuit 31, but the fixed time is shortened by a timer acceleration circuit 32, and if the transistor 4 is turned off by a transistor 2 being turned on, the safety circuit 31 is determined as normal, so that the normal ignition sequence is executed thereafter.

公开(公告)号：EP1394469A2

公开(公告)日：2004-03-03

申请号：EP03405626.7

申请日：2003-08-29

申请人： RB Controls Co., Ltd. ,  Rinnai Corporation

发明人： Nozawa, Koji ,  Honda, Katsutoshi

IPC分类号： F23N1/00 ,  F23N5/24 ,  F23N5/10

CPC分类号： F23N5/102 ,  F23N5/20 ,  F23N5/242 ,  F23N2023/08 ,  F23N2027/16 ,  F23N2027/36 ,  F23N2031/10 ,  F23N2035/14

摘要： A safety circuit 31, which compulsorily closes an on-off valve for supplying a gas to a burner when a microcomputer for performing a combustion control is in an abnormal condition, does not operate unless abnormality occurs to the microcomputer 1, and therefore even when the safety circuit 31 is out of order, an ignition operation is performed as it is. A transistor 4 is not turned off until a fixed time elapses from a start of an ignition sequence in the safety circuit 31, but the fixed time is shortened by a timer acceleration circuit 32, and if the transistor 4 is turned off by a transistor 2 being turned on, the safety circuit 31 is determined as normal, so that the normal ignition sequence is executed thereafter.

摘要翻译： 当用于执行燃烧控制的微型计算机处于异常状态时，强制关闭用于向燃烧器供应气体的开关阀的安全电路31除非微计算机1发生异常以外不起作用，因此即使当 安全电路31是故障的，直接进行点火操作。 晶体管4在从安全电路31中的点火顺序开始经过固定时间之后不会关闭，而是通过定时器加速电路32缩短固定时间，如果晶体管4被晶体管2截止 安全电路31被正常地确定，从而在其后执行正常点火顺序。