Structure of pressure-varying air-exhausting duct


Application Number  00128214 Application Date  2000.12.12
Publication Number  1360123 Publication Date  2002.07.24
Priority Information    
International
Classification
 E04F17/02  
Applicant(s) Name  Lin Runquan  
Address    
Inventor(s) Name  Lin Runquan  
Patent Agency Code  00000 Patent Agent  
AbstractA pressure-variable air exhausting duct common to a building is composed of air exhausting pipeline, exhaustion guide pipe and air flow pressure changing unit. There is a proper gap between at least one of two sides of said airflow pressure changing unit and the inner surface of said air exhausting pipeline. Its advantages is easy positioning and installation of pressure changing unt.