A method for detecting the amount of oil in the oil cup of the range hood

Abstract

The invention relates to a method for detecting the amount of oil in an oil cup in a range hood, which is used to obtain each oil level in the oil cup by classifying the oil level in the oil cup for the oil cup placed on a carrier. The weight change value corresponding to the oil level is then processed to obtain the current oil weight in the oil cup according to the empty weight value when no oil cup is placed on the carrier and the actual load value when the oil cup is placed on the carrier value, and judge whether the waste oil in the oil cup is fully loaded according to the current oil weight value in the oil cup, so as to start the alarm reminder, that is, based on the detection of the weight change of the carrier and the oil cup, the The non-contact detection of the amount of waste oil avoids direct contact with the viscous waste oil in the oil cup, and is no longer restricted by the narrow space of the oil cup, which improves the detection accuracy of the amount of waste oil in the oil cup.

Description

technical field [0001] The invention relates to the field of range hoods, in particular to a method for detecting the amount of oil in an oil cup in the range hood. Background technique [0002] As a commonly used kitchen appliance, the range hood has been installed and used by a large number of residential and family users. During the use of the range hood, waste oil in the smoke extracted by the range hood will gradually accumulate in the oil cup of the range hood. Once there is too much waste oil in the oil cup, it will seriously affect the smoke absorption effect of the range hood, and even easily cause a fire hazard. Therefore, it becomes particularly important to detect the amount of waste oil accumulated in the oil cup (or the amount of waste oil). In the current range hood market, capacitive detection and ultrasonic detection are mainly used to detect the amount of waste oil in the oil cup. [0003] The capacitance detection method is to contact the electrode of t...

AI Technical Summary

Problems solved by technology

However, the ultrasonic wave essentially adopts the principle of optical emission and needs to design a more complicated optical path, which makes how to avoid waste oil from polluting the optical lens, which leads to great difficulties in the implementation of the ultrasonic method.

Of course, the ultrasonic detection method also has the problem of inaccurate waste oil detection results due to the narrow space structure of the oil cup.

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