| 摘要 |
<p>[Problem] The present invention addresses the problem of developing a novel coffee machine that makes it possible to properly brew both espresso coffee and drip coffee automatically using the same extraction cylinder (cylinder body) and the same filter. [Solution] This coffee machine is obtained from a cylinder body that serves as the extraction space and an upper piston and a lower piston, which make it possible to seal the interior of the cylinder body. The coffee machine is characterized in that: the upper surface of the lower piston is provided with a filter for blocking the passage of coffee grounds; the filter is a multi-layer structure obtained by stacking multiple screens; the various screens are stacked so that the filter through holes gradually become larger in the coffee solution extraction direction; and the same cylinder body and filter are used for extracting espresso coffee and drip coffee.</p> |
