High-speed air duct control circuit

By using a combination of a DC motor and an electric heating module in the high-speed air duct control circuit, the problem of low conversion efficiency of AC motors is solved, achieving a balance between high speed and cost for the air duct.

CN224267109UActive Publication Date: 2026-05-22ZHONGSHAN CHUANGFENGDA ELECTRONICS CO LTD
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Patent Information

Application Number
CN202520725704.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-16
Publication Date
2026-05-22
Estimated Expiration
2035-04-16

AI Technical Summary

Technical Problem

Existing ventilation ducts use AC motors for driving, which have low conversion efficiency and make it difficult to strike a balance between cost and high speed.

Method used

It adopts a high-speed air duct control circuit, including a power supply module, a voltage conversion module, a main control module, an electric heating module, a first drive module, a second drive module, and a third drive module. It uses a DC motor to increase the speed and controls the working status of the heating wire through the electric heating module, combined with status indication, temperature detection, and negative ion drive modules.

Benefits of technology

The rotational speed of the blower was increased, while cost considerations were taken into account. High conversion efficiency of the DC motor was achieved, making it highly practical.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model discloses a high-speed air duct control circuit, which comprises a power supply module, a voltage conversion module, a main control module, an electric heating module, a first driving module, a second driving module and a third driving module, the main control module is connected with the voltage conversion module; the electric heating module is respectively connected with the power supply module and the main control module; the first driving module is connected with the voltage conversion module and the main control module and used for being connected with the U phase of the direct current motor. The second driving module is connected with the voltage conversion module and the main control module and used for being connected with the V phase of the direct current motor. The third driving module is connected with the voltage conversion module and the main control module and used for being connected with the W phase of the direct current motor. Through the circuit, the direct current motor can be applied to the air duct, the rotating speed of the air duct is increased through the high conversion efficiency of the direct current motor, meanwhile, the cost problem is also considered, and very good practicability is achieved.
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