| 摘要 |
<p>The present invention is a froth wand for an espresso machine that can generate a high velocity stream of steam to foam a beverage at the beverage brewing apparatus. The wand includes an adapter for attaching to the beverage brewing machine at a steam supply outlet, and a conduit for communicating the steam to a steam tube. The steam tube has a cylindrical body with an annular recessed exit, and is surrounded by a cylindrical sheath. The sheath includes a cylindrical plug with a small longitudinal aperture that fits into the outlet of the steam tube. The mating of the sheath's plug and the steam tube forces the steam through the aperture, accelerating the steam at the exit.</p> |
