| 摘要 |
<p>A process and apparatus in which a smooth, stable foam is formed by intimately admixing a nitrogen containing gas, preferably air, by a Venturi effect in a faucet positioned on the beer tap. The faucet can dispense flat malt beverage and a smooth, creamy and stable foam and has a shiftable faucet shaft, which, in one position dispenses flat beer, and in a second position provides an alternate flow path through restricted orifices which increase the velocity of the malt beverage so that it draws air into the faucet housing through orifices therein and incorporates the air into the foam to dispense a stable, creamy foam from the faucet discharge port. …<??>The apparatus comprises a housing (11) including a first chamber (14) and a second smaller chamber (17), valve means (15) between these chambers and beverage velocity increasing means (27,28).</p> |
