A range hood and a control method thereof

By combining the piezoelectric module and the position acquisition module, the impeller and the volute are aligned coaxially, which solves the problems of airflow turbulence and increased noise caused by impeller misalignment, and improves the working stability and efficiency of the range hood.

CN116624906BActive Publication Date: 2026-06-12NINGBO FOTILE KITCHEN WARE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NINGBO FOTILE KITCHEN WARE CO LTD
Filing Date
2023-05-31
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

In existing range hoods, it is difficult to ensure the coaxiality of the impeller and the volute, which leads to turbulent airflow, increased aerodynamic noise, reduced performance of the fan system, and affects the user's cooking experience.

⚗Method used

The system employs a piezoelectric module and a position acquisition module in conjunction with a controller. The position of the impeller's central axis is acquired through image acquisition, and the deformation of the piezoelectric module is controlled to ensure that the impeller and the volute are arranged coaxially. The motor and the volute are fixed by vibration damping pads and skirts to achieve precise adjustment.

🎯Benefits of technology

This achieves coaxial alignment between the impeller and the volute, improving the stability of airflow, reducing aerodynamic noise, and enhancing the working stability and efficiency of the fan.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN116624906B_ABST
    Figure CN116624906B_ABST
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Abstract

The application relates to an oil fume extractor and a control method thereof, the oil fume extractor comprising a fan frame and a fan system arranged in the fan frame, the fan system comprising: a volute; an impeller rotatably arranged in the volute; a motor mounted on the volute and having a power output end connected with the impeller driving for driving the impeller to rotate; characterized in that: a piezoelectric module is further arranged between the connection between the motor and the volute and is made of piezoelectric material capable of being deformed after being electrified; a position acquisition module is arranged in the volute and used for acquiring the central axis position of the impeller; a controller is connected with the position acquisition module and the piezoelectric module and is configured to: according to the identification result of the position acquisition module, control the piezoelectric module to be deformed correspondingly, so that the impeller is coaxially arranged with the volute. The advantage lies in that: the airflow flowing in the volute is more stable, the fan working stability is greatly increased, the fan efficiency is improved, and the aerodynamic noise is reduced.
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