| 摘要 |
A Venturi tube device is provided with a Venturi tube; a hollow cylindrical fitting; a shroud; and a hollow, cylindrical flow guide member disposed in the Venturi tube. In a showing operation, air can flow through one communicating hole of the shroud, a space defined by two adjacent ridges on the fitting, a conic hole between the two adjacent ridges, and a transverse hole of the Venturi tube in addition to water flowing through the flow guide member and the Venturi tube. |
