The invention relates to a water overflow corresponding system control circuit of a dishwasher and a control method thereof. The dishwasher includes a drain pump; water overflow detection switch, one end connected to the power supply; the other end is connected to the rectifier circuit, the power supply switch; first part series connected to the overflow detection switch, can be conducted in the overflow detection switch is opened; when the microcomputer, overflow detection switch through the rectification circuit, receiving a given voltage, in order to automatically open the power supply system and power output control signal, and open system in power supply, in order to execute the drainage operation time and outputs a drive control signal; relay power source, with one end connected with the power supply, and the power switch power supply system based on microcomputer control signal; the second switch, the power supply is connected in series with the relay and switch the drainage pump according to the driving signal of the microcomputer control Driving state.
【技术实现步骤摘要】
【技术保护点】
一种洗碗机的溢水对应的系统控制电路，其特征在于，包括：排水泵，用于排出贮槽内存储的洗涤水；溢水检测开关，连接于电源的一端，并用于检测上述贮槽内的溢水状态；整流电路，连接于上述电源的另一端，并用于对交流电源进行整流； 第１开关部，串联连接于上述溢水检测开关，可在上述溢水检测开关开启时进行导通，并在导通的瞬间与上述电源、溢水检测开关及整流电路形成闭环电路；微机，当上述溢水检测开关开启而通过上述整流电路接到既定的电压时，为了自动开启系统电源而输 出电源控制信号，并在系统电源开启时，为了执行既定时间的排水操作而输出驱动控制信号；电源继电器，连接于上述电源的一端，并根据上述微机的电源控制信号而开／关系统电源；第２开关部，串联连接于上述电源继电器，并根据上述微机的驱动控制 信号而开／关上述排水泵的驱动状态。
【技术特征摘要】
【专利技术属性】
技术研发人员：金正勋，赵寅行，
申请(专利权)人：乐金电子天津电器有限公司，
类型：发明
国别省市：12[中国|天津]
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