| 摘要 |
PROBLEM TO BE SOLVED: To provide a beverage extractor for an automatic vending machine which has the long seal life of a hot water supply piston, makes a driving source for the hot water supply piston and a hot water supply cylinder common and further improves beverage extraction efficiency. SOLUTION: In this beverage extractor for an automatic vending machine which presses pneumatically hot water thrown into a hot water supply cylinder 2 with a vertically moving hot water supply piston 22 to sweep it away to an extraction cylinder 4 and extracts a beverage from raw material in the cylinder 4, a piston rod 222 that pierces the piston 22 and guides the piston 22 vertically is formed integrally with the cylinder 2. Since a hot water supply piston 221 reciprocating in the cylinder 2 is accordingly guided vertically by the rod 222 penetrating it, the eccentricity of the piston 22 is regulated by the rod 222 to give the seal of the piston 22 a long life.
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