1. The drip coffee machine is a classic drip filter. Simple, efficient and reliable, suitable for public use. The working principle of drip coffee machine is also relatively simple. There is a funnel in which filter paper and coffee powder are placed, and it is essential to have a device for filtering coffee. If you choose to use drip coffee machine, be sure to buy filter paper.

2. The high-pressure steam coffee machine is a combination of pumping and steam. The drip coffee maker mentioned above uses one atmospheric pressure when making coffee, that is, at normal pressure, while the pump coffee maker uses the pressure principle. When brewing coffee, the pressure of water is greater than one atmosphere, generally 5- 19 atmosphere, and the coffee essence is quickly extracted. The brewed coffee is very fragrant and has a layer of grease foam.

Steam coffee machine is the principle of quickly soaking coffee powder with steam. Compared with the pump coffee, the brewed coffee is lighter, has no oil foam, has higher temperature, and tastes heavier than the coffee brewed by the drip coffee machine.

At present, many manufacturers combine the advantages of pump pressure and steam type to produce high-pressure steam coffee machine, which can not only ensure the aroma of coffee, but also cook it quickly.