| 摘要 |
An improved spa nozzle that is capable of entraining high air flow rates from the surrounding environment, said nozzle of the type having a water input conduit of diameter D, a flow output conduit having entry and diameter of DID, a transition conduit having a diameter of ID and a length of PL, and an air entrainment conduit, and wherein the following ratios are defined to describe the relative geometry of the nozzle: alpha=PL/(DID-ID), beta=DID/ID and gamma=D/ID, the improvement comprising: the water input, transition and output conduits being configured such that alpha is in the range of 1.3-5 and beta is >1.9.
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