| 摘要 |
<p>The present invention relates to the field of beverage delivery machines for tea, coffee and like beverages, carrying out the automatic delivery of said beverages, for instance through automatic dispensers or coffee machines of various kinds, also for household use. Said devices typically comprise hydraulic circulation pumps regulating water inflow to the coffee machine or automatic dispenser, whose operation and performance affect all the subsequent stages of beverage preparation and delivery. More particularly the hydraulic vibration pumps mainly adapted for this kind of use and field, may be modified in order to give better performances and have a longer useful life.</p> |
