A direct current premixing fan

By designing an adjustable premixing connector, the problem of replacing connectors under different gas ratio requirements is solved, achieving high adaptability and low-cost operation of the fan, and ensuring the accuracy and stability of the gas-air mixing ratio.

CN224550436UActive Publication Date: 2026-07-24ZHONGSHAN JIUHE NEW ELECTRICAL APPLIANCE TECH CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHONGSHAN JIUHE NEW ELECTRICAL APPLIANCE TECH CO LTD
Filing Date
2025-07-14
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

The premixing connectors of existing DC premixed fans need to be replaced with different specifications according to different gas ratio requirements, which increases development and maintenance costs.

Method used

A premixing connector including a premixing seat and an adjusting cap is designed. By adjusting the rotation of the adjusting cap, the overlapping area of ​​the adjusting air hole and the fixed air hole is changed, so as to realize the continuous or stepwise adjustment of the air volume. Combined with the positioning tooth groove and positioning slider structure, precise adjustment and self-locking are ensured.

Benefits of technology

This technology enables the same premixed connector to be used for multiple gas water heater models, reducing development and maintenance costs, improving adaptability and ease of operation, and ensuring the accuracy and stability of the gas-air mixing ratio.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of direct current premixing fan, including premixing connector installed in fan main body, the premixing connector includes premixing seat and the adjusting screw cap rotationally arranged at the top of premixing seat, the adjusting screw cap includes the central hole of intercommunication premixing cavity and the multiple adjusting air holes of circumferentially spaced arrangement around central hole, and multiple fixed air holes are correspondingly provided at the top of premixing seat, by rotating adjusting screw cap, to change the coincidence or stagger degree between adjusting air hole and fixed air hole, so that air intake amount can be more accurately controlled, ensure the mixing ratio precision of gas and air, the design makes the same premixing connector can be suitable for multiple gas ratio demand, improve the adaptability and versatility of product, reduce development and maintenance cost, in operation, user can realize the adjustment of air intake amount by simple rotation adjusting screw cap, without complex tool or professional skill, convenient and fast operation.
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