US 12,320,111 B2
Water path self-detection method for cleaning device and control device therefor
Xiaofa Lin, Fujian (CN); Xiaoshan Lin, Fujian (CN); Zuhua Liu, Fujian (CN); Shan Lin, Fujian (CN); and Yongshou Huang, Fujian (CN)
Assigned to Komoo Intelligent Technology Co., Ltd., Xiamen (CN)
Filed by Komoo Intelligent Technology Co., Ltd., Fujian (CN)
Filed on Dec. 23, 2022, as Appl. No. 18/088,117.
Application 18/088,117 is a continuation of application No. PCT/CN2021/096414, filed on May 27, 2021.
Claims priority of application No. 202010598864.3 (CN), filed on Jun. 28, 2020.
Prior Publication US 2023/0128459 A1, Apr. 27, 2023
Int. Cl. E03D 9/08 (2006.01)
CPC E03D 9/08 (2013.01) 10 Claims
OG exemplary drawing
 
1. A water path self-detection method for a cleaning device, wherein:
the cleaning device comprises a water tank, a low water level switch, a high water level switch, a water inlet valve, an instant heater box, and a water pump,
the low water level switch and the high water level switch are disposed in the water tank,
the water inlet valve is in communication with the water tank,
the water pump is connected between the water tank and the instant heater box, and
after the cleaning device is powered-on and initialized, the water path self-detection method comprises the following self-detection steps:
1) judging whether the low water level switch is turned on; when the low water level switch is turned on, controlling the water inlet valve to be turned on, controlling the water pump to be turned off, and going to step 2; and when the low water level switch is turned off, controlling the water pump to be turned on, controlling the water inlet valve to be turned off, and going to step 3;
2) judging whether a water replenishment time exceeds a preset first threshold; when the water replenishment time exceeds the preset first threshold, a water shortage fault is confirmed, and the water inlet valve is controlled to be turned off; and when the water replenishment time does not exceed the preset first threshold, returning to step 1;
3) judging whether the low water level switch is turned on; when the low water level switch is turned on, a water path is normal, and the water pump is controlled to be turned off; and when the low water level switch is turned off, going to step 4; and
4) judging whether a water pumping time exceeds a preset second threshold; when the water pumping time exceeds the preset second threshold, a water pump fault or an instant heater box water shortage fault is confirmed, and the water pump is controlled to be turned off; and when the water pumping time does not exceed the preset second threshold, returning to step 3.