A range hood and a control method thereof

By working in conjunction with the main fan unit through a multi-channel auxiliary airflow structure, a dynamic flow field is formed, which solves the problem of oil fume dispersion in the range hood, realizes the forward and downward movement of the negative pressure zone, and improves the oil fume capture efficiency and user experience.

CN122149006BActive Publication Date: 2026-07-24HANGZHOU ROBAM APPLIANCES CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HANGZHOU ROBAM APPLIANCES CO LTD
Filing Date
2026-05-09
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing range hoods, while maintaining a fixed ultra-thin structure, struggle to effectively expand and optimize the airflow field, causing cooking fumes to easily escape after being generated from the cookware, thus affecting the user experience.

Method used

The system employs a multi-channel auxiliary airflow structure that works in conjunction with the main fan. By using auxiliary airflow with adjustable flow rates ejected from each airflow outlet channel, a dynamic flow field is formed, enabling the negative pressure zone of the smoke-emitting area to move forward and sink, thereby enhancing the efficiency of oil fume collection.

Benefits of technology

Without increasing structural complexity or noise, it significantly improves the efficiency of oil fume capture, solves the problem of oil fume dispersion, and enhances the user experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the technical field of smart homes, in particular to an oil fume extractor and a control method thereof, which comprises a machine body, a main fan device arranged in the machine body, a flap hinged to the machine body, and a multi-channel auxiliary air flow structure fixedly integrated on the back of the flap; the multi-channel auxiliary air flow structure cooperates with the main fan device to jointly form a dynamic flow field above a cooking appliance through auxiliary air flows with adjustable flow ratios emitted from air flow ejection channels, so as to realize the forward movement of an oil fume suction negative pressure area. The application provides an oil fume extractor, the multi-channel auxiliary air flow structure is fixedly integrated on the back of the flap, cooperates with the main fan device, jointly forms a dynamic flow field above a cooking appliance through auxiliary air flows with adjustable flow ratios emitted from air flow ejection channels, realizes the forward movement of an oil fume suction negative pressure area, and effectively restrains the dispersion of oil fume from the source, thereby improving the user experience.
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