Electric water heater leakage detection system and electric water heater
A leakage detection, electric water heater technology, applied in fluid heaters, instruments, measuring electricity, etc., can solve problems such as bad experience
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Embodiment 1
[0026] Such as Figure 1-Figure 3 As shown, a leakage detection system for an electric water heater includes a leakage detection circuit 3 connected between the ground wire 1 of the power connector and the wall 2; it is characterized in that the leakage detection circuit 3 is connected to the main The controller 5 is connected, the input terminal of the photocoupler 4 is connected to the ground wire leakage detection circuit, and the output terminal of the photocoupler 4 is connected to the main controller 5; the main controller 5 detects the photocoupler 4 Whether there is a high level output > 3 seconds, if so, then disconnect the relay 7 that controls the electric heater 6; after the relay 7 is disconnected, the main controller 5 continues to detect whether the photocoupler has > 1 second High-level output, if there is, it is judged that the environmental ground wire is charged, if not, it is judged that the electric water heater itself is leaking.
[0027] Among them, in ...
Embodiment 2
[0032] An electric water heater is characterized in that it has the electric water heater leakage detection system as described in Embodiment 1.
[0033] The electric water heater provided in this embodiment has all the technical effects of Embodiment 1. As for the specific structure of the electric water heater, various structures that are known or can be realized in the future can be adopted, and will not be repeated here.
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