Method and apparatus for judging oil accumulation degree of oil screen of smoke exhaust ventilator

Abstract

The invention relates to a method for quoting the oil accumulating degree of the oil net of smoke exhaust ventilator, which continue or un-continue monitors the fan motor working current of the smoke exhaust ventilator and compares it with the setting value, when the working current is less than the setting value, it quotes the oil net is serious oil-accumulating. The method of detecting the working current of the fan motor of the smoke exhaust ventilator is that it is obtained by through a current mutual inductance on the working power wire of the fan motor; the setting value is 80%-85% of the normal working current; the alarm of the smoke exhaust ventilator comprises a commercial power input and power circuit and a current mutual inductance which series a rectification circuit with a large resistance value resistance; the resistance is connected with a microcomputer MCU which is connected with a LED display circuit which provides the power to the microcomputer MCU; the commercial power input provides the power to the working power.

Description

technical field [0001] The invention relates to the field of household appliances, in particular to an alarm device for oil accumulation in the oil net of a range hood. Background technique [0002] After the existing range hood is used for a long time, some oil deposits will be left on the oil net, which will cause the air inlet to be unsmooth, and the direct result is to reduce the air volume of the range hood and affect the effect of the range hood. When users feel these situations, the oil accumulation is often serious; or many users only clean once a year habitually, and usually do not pay attention to whether the oil screen should be cleaned. At present, the range hood is mainly cleaned by this direct sensing method, which often results in waste of energy and damage to the range hood itself. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an alarm device for oil accumulation in the oil net of a range hood ...

AI Technical Summary

Problems solved by technology

[0002] After the existing range hood is used for a long time, some oil will be left on the oil screen, which will cause the air inlet to be unsmooth, and the direct result will be a decrease in the air volume of the range hood, which will affect the effect of the range hood

When users feel these situations, the oil accumulation is often serious; or many users just habitually clean it once a year, and usually do not pay attention to whether the oil screen should be cleaned

At present, we mainly rely on this direct sensing method to clean the range hood, which often results in waste of energy and damage to the range hood itself.

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