This paper introduces the principle and flavor of American drip filter coffee machine, which is composed of mainframe and its extraction method.

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The components of an American coffee machine

Usually, the American drip filter coffee machine is composed of mainframe (including water tank, inlet pipe, outlet pipe, heat preservation tray, temperature control device, heating pipe, etc.), power cord, glass pot, filter basket, filter screen, insulation plate, control switch and water level scale, etc. different American coffee machines are slightly different, but the operating principles, dosage standards and working principles are basically the same.

Working principle of American drip filter coffee machine

1. Water flows down from the water tank and into the U-shaped heating pipe

2. The U-shaped heating tube heats the water. After a circle of heating, it reaches exactly 100 degrees.

3. Through water pressure and warm pressure, the front hot water is pushed to the outlet pipe, and then sprayed through the outlet.

4. after the hot water is dripped into the coffee powder in the filter, it is fully soaked and extracted and filtered through the drip filter switch of the filter basket.

Coffee enters the glass pot, a pot of coffee is cooked, and the whole process only takes 8 minutes.

What is dripping coffee? What's the difference between espresso and espresso?

In fact, from a theoretical point of view, there is not much difference between espresso and drip coffee, both use hot water to filter the coffee powder, and then filter to complete brewing.

But the key difference is that in the espresso making process, hot water is driven by pressure to filter the coffee powder, while drip coffee is filtered entirely by gravity. As a result, drip coffee takes longer to brew and requires more coffee powder and water.

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