Working principle diagram of Italian coffee machine-grinding principle of bean grinder

Working principle diagram of Italian coffee machine-grinding principle of bean grinder

Italian coffee machine is generally divided into traditional boiler type and new heating block type from the heating mode. The traditional boiler type has been passed on because of its stable water temperature and high extraction quality. But the disadvantage is also obvious, the manufacturing cost is high, and the price of the finished coffee machine is high. Corresponding toys are the first choice of middle and high-end coffee machines. The cutting-edge heating block technology has been promoted in low-end and fully automatic and toy Italian coffee machines because of its low cost, good control and relatively good product quality.

From the use of water pump can also be a simple distinction between low-end and high-end coffee machine. Generally less than 5000 coffee machine, the use of vibration pump for extraction pressure, because the working principle of the vibration pump caused by the output pressure is not stable, so the extraction quality is poor. More than 5000 of coffee machines have rotary pumps in some mid-range models (Aibao E61). The high-end machine is the rotary pump all over the world! With the development of pressure swing extraction technology, new products such as gear pump and magnetic drive pump have jumped onto the stage. But the vast majority of the market is still occupied by vibrating pumps and rotary pumps. One of the simplest criteria for choosing a coffee machine on the market is... As long as it is a rotary pump, this machine is certainly not as bad as that.

1. Working principle of drip coffee machine

When the power is turned on and the switch is turned on, the indicator light is on and the heating tube starts to work. When there is no water in the tank, the temperature rises. When the temperature rises to a certain temperature, the thermostat is disconnected and the heating tube stops working. When the temperature begins to drop, the thermostat is restored and the heating tube continues to work to achieve heat preservation.

2. Working principle of high pressure steam coffee machine

The coffee pot has a high-pressure chamber, and when the water begins to produce a large amount of steam, the pressure in the high-pressure chamber is greater than the atmospheric pressure, so the water rises along the pipe and flows into the coffee filter under the action of steam pressure in the chamber. the coffee seeping from the bottom flows into the coffee cup. There is a safety valve at the top of the high pressure chamber (to ensure safety). Or open the air valve, you can use steam to bubble the milk.

The built-in closed small boiler water tank of this kind of coffee pot mainly relies on the steam produced by water at high temperature to produce coffee. The coffee produced by this kind of product has a stronger flavor than the drip coffee pot and is more suitable for people with higher requirements for coffee taste. This kind of goods generally have the function of beating fresh milk, and you can make "cappuccino" by yourself.

The following is to talk about the use of several coffee machines that are often used by ordinary families. from the point of view of the coffee machines sold on the market, they can be classified into the following categories: siphon type, high pressure type, dripping type, cooking type, and cold shrinkage.