Crrc Qingdao Sifang Co., Ltd.

Conghui Zhang

Peng Lin

Xin Jiang

Sansan Ding

Shaoqing Liu

Dawei Chen

Shuanbao Yao

Yunfeng Li

A waste exhaust ventilation door automatic control device comprises a core body (), an inner door body () and an outer door body (); wherein the core body is fixed on a ventilation opening of the waste exhaust ventilation door, a top of the outer door body is movably hinged on an outer side of the core body, and a bottom of the inner door body is movably hinged on an inner side of the core body; when there is no pressure fluctuation outside the core body, the outer door body and inner door body will open, and when there is pressure fluctuation outside the core body, the outer door body and/or the inner door body will be closed automatically due to a pressure difference between inside and outside the core body. A vehicle body comprising the waste exhaust ventilation door automatic control device is also provided.

Waste exhaust ventilation door automatic control device and vehicle body having the same

Growing community of inventors

Shandong, China

Conghui Zhang