| 摘要 |
Preventing device for backflow of contaminated water in washing machines for domestic use characterized in that outlet opening (8) of the supply nozzle (7) is located at a level (C) below the static water level (A), the end portion of said supply nozzle extending into an inverted cup-shaped element (10) the opening of which is located at a level (D) above the dynamic water level (B), the interior wall surface of said cup-shaped element and the exterior surface of said supply nozzle end portion defining a space the volume of which is at least equal to the interior volume of said supply tube (5) between said static water level (A) and the level (C) of said outlet opening. |
