Patent ID: 11920923
Assignee: A. O. SMITH CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  F | IPC F  G

Claim 0:
1. A scale detection method, comprising:
acquiring a first temperature of a heat exchange zone of a water heating device;
acquiring a second temperature indicating a water temperature in the water heating device, and
acquiring a temperature difference between the first temperature and the second temperature; and
determining that a scale generation amount in the water heating device reaches a preset threshold when at least one of the following judgment conditions is met:
the first temperature is not less than a preset temperature threshold; and
the temperature difference is not less than a preset temperature difference threshold,

wherein the method further comprises:
acquiring a flow rate in the water heating device;
triggering the judgement condition that the first temperature is not less than the preset temperature threshold, when the flow rate in the water heating device is less than a first preset flow rate or greater than a second preset flow rate; and
triggering the judgement condition that the temperature difference is not less than the preset temperature difference threshold, when the flow rate in the water heating device is greater than the first preset flow rate and less than the second preset flow rate.