| 摘要 |
A method for air removal from a water-closet bowl consisting in the directing of the air from the water-closet bowl to a vertical ventilation duct where partial vacuum is generated under any weather conditions A device for air removal from a water-closet bowl whose toilet seat (4) has a passage (8) with slots (10) in its internal wall, and moreover two coaxial flange tubes (5) are connected to the said passage (8), upon which a seat cover (3) and a toilet seat (4) are mounted pivotally, and one of the said flange tubes (5) is connected to one end of a piping (11), and the other end of the said piping (11) is coupled with the vertical ventilation duct (1) which is laid out along the waste riser (24) and the outlets of the duct branches are in the vicinity of the water-closet bowl (2), and furthermore a cowl (12) with a head (13) which terminates with a broadening cone and an air louver (14) is installed upon the roof outlet of the vertical ventilation duct (1). |
