How different coffee makers work

A good morning starts with coffee. And the best coffee is the one that is brewed by hand. In order to create this drink of the gods, a special device is required. In order to choose the right apparatus for creating coffee, it is worth understanding how the coffee maker works. Today we will examine the principle of operation of various types of appliance and consider the internal structure of the coffee maker.

Kinds of coffee makers

The purchase of a coffee maker is complicated by the wide range of manufacturers on the market. It is based on different principles of operation of the device, the involvement of the person in the preparation of the drink and care of the device. What is the difference between coffee makers from each other?

1. Coffee makers can be manual, automatic and semi-automatic.
2. The easiest way to make a flavored drink is to use it. french press. The principle of operation of the coffee maker is elementary simple: ground beans are placed in a flask and poured with boiling water. After boiling, the coffee grounds are pressed with a special press.
   
3. If you pick up the device for a small office, then you are perfect coffee makers drip type. Brewed coffee passes through a special filter and drip by drop into a coffee pot.
   

4. For use at home is perfect geyser model. The coffee maker's circuit consists of a water tank (bottom), a filter and a container for the finished coffee (top). Cold water is poured into the bottom of the metal device, and ground grains are placed in the top. After heating, boiling water under pressure of steam rises to the top and makes coffee.
   

5. Their popularity is deservedly gaining instruments that use capsules. Capsule coffee machines use a vapor pressure system. They significantly reduce the time to prepare a drink, due to the fact that their work is fully automated. You just need to check the level of the liquid in the tank, put the capsule in the right compartment, press the start button. The device will do the rest.Of all the varieties of coffee makers, capsule models are the most expensive and require careful handling.
   
6. Espresso coffee makers make up a separate group of devices. Brewing coffee in them is due to the impact of hot steam. They are divided into steam, pump, piston and air pump.
   

In the low price segment of espresso coffee machines, pump devices are in the lead. The principle of their work is that the liquid is heated in the boiler, the resulting substance under pressure processes the ground grain and thereby carries out the brewing process.

Such devices can be found in modern coffee shops. They are very convenient to use. In turn, there are differences between them. This is due to the presence of various additions, for example, such as cappuccinator (used for beating milk for espresso). With this device, steam is released from the boiler. In more advanced models, a thermoblock is used instead of a boiler. It allows the barista to regulate the heating temperature. From here there are opportunities to increase the number of simultaneously prepared portions and reduce the time spent on the preparation of the drink.

Rozhkovye coffee makers

For real gourmets and lovers of vivacity drink, an excellent choice would be a rojk type coffee maker. The principle of its work is as follows: coffee is tamped in a special horn - holdere tightly fixed in the connector of the cooking group. This is where the whole cooking process takes place. After starting the water supply, it undergoes a heating process. After that, boiling water enters the holder, where it passes under pressure through compressed coffee. In this way, they get espresso in a horn type coffee machine.

The holder fits an average of 7 grams of coffee, which is approximately 30 ml of espresso.

In order to condense coffee, use a tempera. Compressed coffee is obtained in the form of a tablet. These coffee tablets are called piles.

To get a strong and tart espresso, it is recommended to pass through a coffee pill a liquid with a temperature of 86–93 degrees Celsius under a pressure of 9 bar for 20–30 seconds.

The internal equipment of the horn-type coffee maker is a whole cooking system, which includes a number of devices capable of controlling and tracking the supply and spill of water. When choosing a coffee machine should take into account their absence and availability.

Mandatory elements include:

1. Switch - with its help the control of the fluid supply is carried out. Automatic machine stop flow. To do this, use functions such as strait by timer or by volume. The ability to set a specific time or a certain amount of water expands the variability of the final products. In semiautomatic devices it is required to manually turn on and off the water. The functionality of the device depends on the manufacturer and model. To date, you can find fully automated rozhkov models. The user simply sets the parameters of the final product - the rest is up to the device.
2. Boiler - an indispensable part of any coffee maker for making espresso. It is heated fluid and, accordingly, the formation of steam. The boiler is most often made of copper. Much less common steel boilers. Espresso-type coffee machines are more often made with one boiler. In the case when the machine has two compartments for heating, the heating itself takes place in one, and the other specializes in the formation of steam.Double-boiler machines have a higher efficiency, as they are able to withstand loads without the possibility of overheating. At the same time, the price of such a device is much higher.
3. To control the supply of boiling water, its temperature and pressure in the devices use a valve, valve supply and boiler pressure gauge. A pressure gauge monitors the pressure and temperature inside the boiler. The presence of such an element is especially important for a single-mechanism. Manometer readings indicate machine readiness for operation.
4. The steam pressure in the boiler is monitored and monitored using a steam supply valve and pressure gauge pump. The crane plays the role of a switch, and the pump - the controller. Using these two mechanisms, you can monitor the health of the machine.
5. Another important element to control the operation of the machine is pressostat. The device is connected to the heating element of the boiler. Also signals a malfunction of the device in the event of overheating or overload.

Device of the rozhkovy coffee maker

Water delivery from the tank to the heating boiler is carried out pump pump It produces cold water at a pressure of 9 atmospheres. There are several types of connection of the rozhkovy coffee maker to water:

• A popular option today is a reservoir built into the apparatus.
• For coffee machines, this type of supply is possible, such as connecting directly to the water supply system. Do not forget that with this method of filing it is important to equip the filter. If the water in your area is quite hard, then in this case it is recommended to purchase a device that will soften the water.
• The best option for the stable operation of the coffee maker is a combined supply circuit. The device itself is equipped with a reservoir, in addition, it has all the outlets for water supply.

Additional elements:

1. One of the additions that is useful for improving the operation of the machine is heat exchanging cup. The whole system of pipes provides heating of water much faster than when heated through a boiler. Such a system makes it possible to simultaneously prepare a drink and use steam, for example, to handle a cup.
2. Clearly determine and calculate the amount of water for one espresso will help volumetric sensor portion control. With this tool you can calculate the volume of water that has entered the heat exchanger and the volume of boiling water displaced from it.Such a device makes it possible to distribute and install different volumes for different servings of beverages.

Conclusion

The principle of operation of different coffee machines varies considerably. Each type of brewing coffee is individual. Drip or geyser coffee makers are great for small offices or home use. They are low cost and do not require special care. If you are not limited in financial opportunities, choose capsule models. Such machines are fully automated and allow you to prepare several types of coffee. If you decide to purchase a coffee machine for industrial scale, then you should pay attention to the device horn type.