Coffee flower basic equipment Italian professional coffee machine

1. Italian professional coffee maker

According to the cooking and heating system of the boiler, it is generally divided into four types, namely, single boiler system, sub-master boiler system, double boiler system and multi-boiler system. Four different boiler brewing and heating systems will be different when we brew espresso, and the main reason for the difference comes from the different configuration of the boiler and the heating mode of the heater.

Single boiler system: the hot water, steam and water of the single boiler system are all heated by the same heater. When using a single boiler system to brew coffee, the outlet temperature of the flushing head will be directly affected by the use of hot water and steam. And the situation is unstable, so the way of the single boiler system is mostly used on the household coffee machine or lever spring piston coffee machine. General commercial espresso machines no longer use this system.

The sub-master boiler system: the hot water and steam of the sub-master boiler system are heated by the same heater as the water used in the brewing head, but the heating of the sub-master boiler is heated by heat exchange with the parent boiler, and when using the sub-master boiler system to brew coffee, it does not directly make the outlet temperature of the flushing head receive a large temperature to lower the outlet temperature of the flushing head, while the brewing mode of the parent boiler system It is the boiler system of most espresso machines on the market, so the stability of the machine is within an acceptable range without using a lot of hot water.

Double boiler system: the hot water and steam of the double boiler system are heated by the same heater, and the water used in the brewing head is heated by another heater. When using the double boiler system to brew coffee, the outlet temperature of the brewing head will not be reduced because of the use of steam and hot water, and the stability of the machine is good.

Multi-boiler system: the heating mode of the multi-boiler system is very similar to that of the double-boiler system, except that each head has its own independent heater, which can set the water temperature, so the Italian coffee machine with double head has three boilers. The Italian coffee machine with three boilers has four boilers.

Each kind of boiler system has its own characteristics and differences. When choosing an Italian coffee maker, we should consider several points.

a. Is the ease of operation good?

b. Whether all the control buttons and knobs respond well

c. Is the stability of the machine good?

d. Whether the reheating speed is good or not

e. Is the steam outgassing enough?

f. Is the dryness of steam good?

two。 Steam pipe, nozzle

Each Italian coffee machine uses a different form of steam pipe and the outlet mode of the nozzle. From the form of steam pipe, it is divided into long tube type and short tube type, and it is divided into thick tube type and thin tube type. When the long tube type is in use, the steam strength of the long tube type is weaker than that of the short tube type, but the long tube type is not easy to be restricted in operation. The gas output of the steam pipe of the thick tube type is larger and the strength is weaker than that of the thin tube type, while the gas output of the thin tube type is small and the strength is stronger.

The outgassing mode of the nozzle head has a lot to do with the arrangement and position of the outlet holes, most of the outlet holes are 4 holes and 5 holes, and different arrangement positions will cause different outlet directions, so it can be divided into two types: the lateral expansion type and the centralized type.

Different forms of steam pipe, the outgassing intensity and outgassing volume will be different, coupled with the different position of the outlet hole and the number of holes, it will cause differences in the angle and way of milking. Before using the Italian coffee machine, you should pay attention to the form of the steam pipe used, together with the appropriate milk, so that you can make dense and fine milk bubbles.

3. Selection of bean grinder

Generally speaking, the professional bean grinders in the market use disc cutting to grind coffee beans, while household bean grinders mostly use blade type to grind coffee beans, and use chopping beans to grind coffee beans. the uniformity of coffee powder after grinding is very different between the two. Although the price of the disc grinder is expensive, it has a great influence on the control of brewing coffee. Therefore, it is suggested that we should take the disc-cutting bean grinder as the first choice.

The professional disc cutting bean grinder, distinguished by the form of blade, is divided into two types: disc blade and conical blade, most of which mainly use disc blade, that is, upper and lower cutters. the lower cutter plate uses motor rotation to drive rotation to achieve the role of grinding coffee beans, and to rotate the upper cutter head to adjust the distance between the upper and lower blades to control the size of coffee powder. The size of the flat cutter head, the diameter is the most common in 58mm, 64mm, 75 ", 84". The larger the diameter of the cutter head is, not only the speed is faster, but also the grinding is more uniform, and the production of heat energy is smaller, which can ensure that the aromatic substances of coffee powder will not be lost too much. In addition, it should be noted that the spacing when rotating the cutter head to adjust the scale should not be too large, lest it is impossible to adjust the thickness of coffee powder slightly. In addition, some bean grinding machines have counterweight ways to grind coffee beans because of the vibration when grinding coffee beans, resulting in uneven grinding of coffee beans, so we can choose a good professional bean grinder according to the above key points. this has a very critical impact on the quality of professional coffee.

4. Coffee powder filling machine

There are many different types of coffee powder fillers on the market, but generally speaking, they are mainly divided into two types: plane type and arc surface type. As for the difference in material and weight, it varies according to individual habits and methods. We won't discuss it here. So how to choose the plane type and the arc type fillers? Before choosing, we should first pay attention to the Italian coffee machine brewing head filter, with the shape of the filter cup on the filter handle, flat filter and filter cup, with flat coffee powder filler, arc-type filter and filter cup, with arc-shaped coffee powder filler, so that the filled coffee pressed powder can be uniformly combined with the filter and filter after absorbing water and expanding, so that coffee pressed powder can be extracted evenly. Otherwise, it will cause the uneven density of coffee pressed powder after water absorption and expansion, so that the coffee will be over-extracted or underextracted, so it is very important to choose the appropriate coffee powder filler.

5. Brushed steel cup

There are also many types of drawn steel cups, according to the shape of the steel cup mouth is mainly divided into two types, sharp mouth type and round mouth type, sharp mouth type steel cup is easier to draw thin lines of the circle, round mouth type is easier to draw symmetrical patterns. According to the form of steel cup mouth groove, it can be divided into long groove type and short groove type. the longer the groove shape is, the better the function of collecting milk is, and it is better to control it when drawing patterns, while the short groove is better to use when scraping milk bubbles. In addition, the grip form is also divided into connection type and separation type, the grip of the connected type steel cup is better mastered, and the separated type steel cup is better used in chilled cooling. As for what kind of steel cup works well? In fact, as long as you are proficient in habits, so more practice is the key to success.

Other utensils include thermometers, stainless steel spoons, hand-held milk foam pots, stainless steel pots, stainless steel cups, Italian grinder coffee pots, electric or gas stoves, toothpicks, needles, screens, etc.