Range hood and detection device thereof

• Main Author: GAO MINGRUI
• Format: Patent
• Language: Chinese; English
• Published: 02.06.2023
• Subjects: BLASTING; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION; DETECTING MASSES OR OBJECTS; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; HEATING; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; LIGHTING; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; MECHANICAL ENGINEERING; OTHER DOMESTIC STOVES OR RANGES; PHYSICS; RANGES; TESTING; VENTILATING; WEAPONS

The utility model provides a range hood and a detection device thereof, the range hood comprises a water pump, a water pipe and an impeller, the water pump is used for sucking water in the water pipe so as to clean the impeller, and the detection device comprises a charging and discharging circuit, a first pole piece, a second pole piece, a sampling circuit and a controller; the first pole piece and the second pole piece are arranged on two sides of the water pipe in parallel; the charging and discharging circuit is used for charging and discharging a capacitor formed by the first pole piece and the second pole piece; the sampling circuit is used for sampling the voltage at the two ends of the capacitor and outputting the sampled voltage to the controller. Specifically, the capacitance value of the capacitor formed by the first pole piece and the second pole piece when water exists in the water pipe is different from the capacitance value of the capacitor formed by the first pole piece and the second pole pie