A range hood and a control method thereof

By using the condensate from the lifting bladder and cooling unit in the range hood, the problems of high water consumption for fan cleaning and waste of condensate are solved, achieving water conservation and cost reduction while improving cooling efficiency.

CN116817335BActive 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
2023-07-14
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing range hoods suffer from problems such as high water consumption, high cost, easy clogging, and complex electrical control when cleaning the fan. Furthermore, the condensate water in air-conditioning range hoods cannot be completely consumed, resulting in resource waste.

⚗Method used

The system uses a lifting bladder that expands under heat to raise a moving plate, forming a cleaning chamber. The impeller is cleaned using condensate from the refrigeration unit. The heat from the condensate is used for heat dissipation, reducing energy consumption. The use of condensate is controlled by a solenoid valve.

🎯Benefits of technology

It achieves water conservation and cost reduction in fan cleaning, avoids electrical control problems, and makes reasonable use of condensate resources to improve cooling effect and reduce overall energy consumption.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses an extractor hood and a control method thereof. The extractor hood comprises a fan assembly, the fan assembly comprises a main fan, the main fan comprises a volute and an impeller arranged in the volute, the volute comprises a ring wall, and a gap is formed in the bottom of the ring wall. The fan assembly further comprises a moving plate arranged below the impeller, the moving plate comprises a bottom plate, and a lifting bladder capable of being expanded by the heat of hot water for cleaning to lift the moving plate upward, so that the volute and the moving plate have at least two states. The main fan working state: the bottom plate of the moving plate is blocked at the gap and smoothly transitions with the ring wall; and the main fan cleaning state: the position of the moving plate is higher than that in the working state, and the space in the volute above the bottom plate of the moving plate forms a cleaning cavity.
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