A rotary wheel acceleration mechanism and a vertical axis micro wind generator

By employing a coaxially arranged planetary gear train acceleration mechanism in a vertical axis micro wind turbine, the problems of large size and high energy loss of multi-stage transmission mechanisms have been solved, achieving low starting wind speed and high-efficiency power generation, thus expanding the application range.

CN224592271UActive Publication Date: 2026-08-04GUANGDONG SIJIFENG NEW ENERGY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202522301416.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-29
Publication Date
2026-08-04
Estimated Expiration
2035-10-29

AI Technical Summary

Technical Problem

In existing vertical axis micro wind generators, the multi-stage transmission mechanism is bulky and has high losses, making it difficult to meet the needs of micro wind power generation. In addition, the high starting wind speed requirement limits its application scenarios.

Method used

The system employs a planetary gear train acceleration mechanism, which includes a central shaft for the fan blades, a planetary gear support, planetary gears, an internal gear ring, a sun gear, and a rotor drive shaft. The input and output shafts are arranged coaxially. Power multiplication is achieved through planetary gear train transmission and an accelerator, reducing transmission points and energy loss.

Benefits of technology

It achieves a compact structure, small size, low start-up wind speed, and high-efficiency power generation, expanding its application scenarios and making it suitable for outdoor environments with weak wind resources.

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Abstract

This utility model discloses a rotary gear acceleration mechanism and a vertical axis micro wind generator, including a central shaft of blades and a rotary accelerator. The rotary accelerator includes a planetary gear support, planetary gears, an internal gear ring, a sun gear, and a rotor drive shaft. The central shaft of the blades is fixed to the planetary gear support, which is connected to planetary gears. The planetary gears mesh with the internal gear ring and the sun gear. The rotor drive shaft is fixed to the sun gear. The central shaft of the blades and the rotor drive shaft are coaxially arranged. Unlike previous multi-stage parallel shaft schemes, the input and output shafts of this utility model are coaxially arranged, significantly reducing the radial dimension of the rotary accelerator, resulting in a compact structure and smaller volume. This allows for good adaptation to vertical axis micro wind generators, and also reduces energy loss and damping during transmission, leading to lower starting wind speeds and a wider range of applications.
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