1 Introduction to coffee machines

Electronic technology has been applied to coffee machines to create automatic control of the entire process of brewing coffee, including grinding, pressing, loading, brewing, and removing residues, creating coffee machines. The coffee polished with a coffee machine can make people genuinely enjoy the aroma and taste of coffee, which is the original coffee.

2 How the coffee machine works

1. Principle of operation of fully automatic coffee machines

The machine automatically grinds the beans, automatically presses the powder, and automatically brews the coffee; using the pressure of the water pump, the hot water in the fever boiler will instantly pass through the brewing cavity and compress the coffee powder, extracting the inner essence of the coffee immediately, so that the coffee has a strong aroma and forms a thick layer of exquisite foam on the surface.

2. Working principle of the semi-automatic coffee machine

The semi-automatic coffee machine has a high-pressure chamber. When the water starts to produce a large amount of steam that cannot be relieved through the small holes, the pressure in the high-pressure chamber is higher than the atmospheric pressure. Hence, the water rises the water pipe and flows into the coffee filter under the steam’s pressure produced in the chamber. The high-pressure chamber has a safety valve at the top (to ensure safety). Alternatively, the bleeder valve can be opened to apply steam to froth the milk.

3… Drip coffee machine working principle

When the power is turned on, and the switch is switched on, the indicator lights up, and the heating element starts to work. When there is no water in the tank, the temperature rises, and when it reaches a specific temperature, the thermostat is switched off, and the heating element stops working. When the temperature starts to decrease, the thermostat is restored, and the heating pipe continues to work, thus achieving heat preservation.

4. Working principle of high-pressure steam coffee machines

The coffee pot has a high-pressure chamber. When the water starts to produce a large amount of steam, it cannot escape through the small holes, so that the pressure in the high-pressure chamber is higher than the atmospheric pressure. The high-pressure chamber has a safety valve at the top (to ensure safety). Alternatively, the steam can be used to froth the milk by opening the bleeder valve.

3 Types of coffee machines

1. Fully automatic coffee machines

The automatic coffee machine is a fully automatic coffee brewing machine that eliminates the need for hand operation. Such coffee machines can grind, fill, and produce coffee, and some can even add hot milk and make milk coffee. Fully automatic coffee machines are involved, but convenient, fast, consistent, efficient, and come in a wide variety, but require good maintenance and are expensive to maintain. The famous coffee packet and capsule coffee machines can also be called fully automatic machines. However, the difference between these two and traditional coffee machines is that the raw materials used are coffee bags and coffee capsules, such as coffee semi-finished products rather than coffee beans.

2. Semi-automatic coffee makers

Semi-automatic coffee machine, is relative to the automatic coffee machine, it is a professional coffee machine because semi-automatic coffee machine can not grind the beans, can only use coffee powder, the operator needs to fill the powder and pressure powder, which involves the process of coffee production, it is called a genuinely professional coffee machine. It has the following features: 1) constant water temperature; 2) stable pump pressure; 3) continuous pressure and dry steam, easy to operate; the semi-automatic coffee machine is mainly produced in Italy, its structure is simple, easy to maintain, following the correct use of Italian coffee can be made in high quality.

3. Classic drip coffee machine

The drip coffee machine is a classic drip filter. It is simple, efficient, reliable, and suitable for public use. It consists of a funnel that holds the filter paper and coffee powder, with an essential coffee filter. A V-shaped funnel on the top and a removable coffee pot on the bottom is the classic style of a drip coffee machine.

4. High-pressure steam coffee makers

As the name implies, high-pressure steam coffee machines are a combination of pump pressure and steam. The drip above the coffee machine uses one atmospheric pressure when brewing coffee, brewed at atmospheric pressure. In contrast, the pump pressure coffee machine is through the principle of force, brewing coffee when the water pressure is more significant than one atmospheric pressure. Generally 5-19 atmospheres, rapid extraction of coffee extracts, the coffee brewed out of a more potent aroma, and a layer of oil foam.

4 How to use a coffee machine

When using a coffee machine to make coffee, the general steps are.

1.Choose coffee powder; if it is coffee beans, you need to grind the coffee beans now to produce coffee.

2, in the use of filter paper, is to unfold the filter paper to form a funnel’s shape, the user can according to their own needs in the appropriate amount of coffee powder into the filter paper. The primary purpose of using filter paper is to filter out impurities and increase the coffee’s aroma while also being easier to clean.

3. Put the coffee into the basket with the filter paper.

4.Use the coffee maker to fill it with a small amount of cold water.

5.Put the water from the coffee maker into the water reservoir at the back of the coffee maker.

6.Put the lid of the coffee maker on the coffee maker and switch it on.

7.After the coffee is made, the coffee maker will automatically stop boiling water and keep the coffee warm.

8. Finally, take out the filter paper and clean the filter paper basket to complete coffee production.

How to use an automatic coffee machine

1, remove the lid of the bean box of the coffee machine, put an appropriate amount of coffee beans into the bean box, and fill the bean box to 80% full.

2.Please take out the machine’s water tank and fill it 3/4 of the way with fresh water. Afterward, gently press the water tank against the valve that opens automatically when putting the tank back into the machine, and then close the tank.

3.Plugin the coffee machine.

4, after the completion of preparatory work, it is necessary to select the necessary procedure; automatic coffee machines are generally on the “small cup,” “large cup,” hot water/steam, coffee powder, and other several functional buttons, the user can select the corresponding button according to their own needs.

After choosing a good program, the coffee machine will automatically start making its coffee, and when the time comes, the coffee will be made.

How to use a semi-automatic coffee machine

Grind the coffee beans into a powder before use, fill the handle slot with coffee powder, but do not fill the handle slot to the brim; it should be about two thirds full.

Flatten the coffee powder with the tool used to press the powder. Once the coffee powder is flattened, you can use the semi-automatic coffee maker.

Turn the power on and then rotate the pressed coffee powder at a 45-degree angle to the right of the machine’s mouth until the lid is tightly closed. Finally, you will only need to fill the cup with coffee.

How to use a drip coffee maker

1, when using the drip coffee machine to make coffee need to preheat the coffee machine, and then add half a pot of water in the water tank of the coffee machine, and at the same time turn on the power of the coffee machine.

2, in the funnel of the coffee machine in the matching filter paper, according to the cup 7-9 grams of coffee powder into the filter paper, coffee powder put, close the funnel door, and at the same time add 175 ml of water in the water tank.

3. Use filtered water to brew the coffee, which will produce a perfect cup of coffee.

High-pressure steam coffee machines

To make coffee, you must first connect to the power supply, and the high-pressure steam coffee machine must be connected to an A/C socket. The voltage used must be under the voltage specified on the packaging of the device. Remove the bean box’s lid and put a suitable amount of coffee beans into the bean box (most fully automatic coffee machines have a bean box capacity of no more than 400G), and fill it to 80% full.

2. Take off the water tank on the machine, remove the water tank cover and fill it with about 3/4 of the freshwater capacity; the valve at the bottom of the water tank acts as a drain. When putting the water tank back into the machine, gently press the water tank against the valve that opens automatically and close the water tank lid.

3, the completion of the above preparatory work on the production of coffee, general high-pressure steam coffee machine body above the button’s function are coffee powder, no only use the coffee beans. The specific button varies from machine to machine. The high-pressure steam coffee machine is straightforward to make coffee.

5 How to buy a home coffee machine

1. Determine the type of coffee machine

In general, in professional coffee shops and coffee bars, traditional Italian manual coffee machines are the first choice. Well-trained professionals use classic Italian coffee machines to instantly grind and brew coffee, which creates a healthy coffee mood and fills the air with the aroma of the coffee, enabling guests to experience the unique charm of coffee. In hotels, cafes, restaurants, bars, and offices, automatic coffee machines are often used. Because these places have a massive flow of passengers and concentrated demand, the choice of fully automatic coffee machines will fully demonstrate its advantages of convenience, speed, and high quality, so that guests can enjoy the consistent quality of coffee promptly in the shortest possible time to obtain physical and mental satisfaction.

2. Selecting the specifications of a coffee machine

The size of the coffee machine is selected according to the amount of coffee required per hour. A certain margin should generally be allowed for the capacity of the coffee machine.

3.Choosing the right brand is essential.

The choice of brand of coffee machine is equally important and the brand of a coffee machine. Famous international brands have good product quality and guaranteed supply of spare parts, while unknown brands are riskier due to their small output and small scale, and the lack of assured supply of spare parts.

4 Study the different functional characteristics of coffee machines

Different coffee machines have different functions, and if your coffee machine can make more value-added coffee products, it will also add to the operation of your coffee shop, so research or consult the functions and features of various coffee machines before making a purchase.

6 Cleaning and maintenance of coffee machines

1. The coffee machine should be placed on a horizontal and stable table or countertop to avoid tipping.

2, the coffee machine should be placed away from children and the elderly who have difficulty moving, in order to avoid the risk of burns.

3, as new machines have a plastic taste, which is harmful to the human body, so before using the electric coffee maker for the first time, two pots of boiling water should be boiled in order to remove the bad taste.

4, the coffee machine to add the right amount of water, too much water is likely to cause overflow phenomenon, laying a potential safety hazard.

5, after each use of the coffee machine should be promptly cut off the power supply, and the coffee machine can be cleaned part of a simple clean.

6, coffee pot regular descaling, depending on the use of the annual descaling 2-5 times. The specific method is to add 2 cups of water into the water tank, and then add 50ml vinegar, in accordance with the coffee brewing program drip leakage of a cup of volume, rest for 20 minutes, and then start to make all the water in the water tank leakage tax net, shutdown after 5 minutes, and then re-operation 1-2 times with water.

7. After cleaning the coffee machine, use a soft dry cloth to dry the excess water and place the machine in a dry and ventilated environment.