Working principle of Murphy mr4266 coffee machine

What is the principle of coffee machine?

1, the working principle of drip coffee machine

Turn on the power supply, turn on the switch, the indicator light is on, and the heating tube starts to work.

When there is no water in the water tank, the temperature rises. When it reaches a certain temperature, the thermostat is disconnected and the heating pipe stops working. When the temperature began to drop, the thermostat resumed working and the heating pipe continued to work, thus achieving the purpose of heat preservation.

2. The working principle of high-pressure steam coffee machine

The coffee pot has a high-pressure chamber. When water begins to generate a large amount of steam, it cannot release the pressure through the small holes, so that the pressure in the high-pressure cavity is greater than atmospheric pressure, so the water rises along the water pipe, generates steam pressure in the cavity and flows into the coffee filter, and the coffee oozing 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 and foam the milk with steam.

This kind of coffee pot has a small sealed boiler water tank, which mainly relies on the steam generated by water at high temperature to make coffee. The coffee brewed by this kind of products is richer in taste than the drip coffee pot, and is more suitable for people who have higher requirements on coffee taste. Generally, this kind of goods have the function of beating fresh milk, and you can make your own cappuccino.

Let's talk about the use of several coffee machines commonly used in general families. As far as the coffee machines sold in the market are concerned, they can be divided into the following categories: first, siphon type, second, high pressure type, third, dripping type, fourth, boiling type and fifth, cold shrinkage type.

Next, little coffee brother will briefly talk about the use of these five coffee machines.

1, siphon type

Step 1: Pour hot water until the glass falls, and boil it with high fire until the water boils.

When cooking a cup, the amount of water to be added to the ball is 200 ml, 175 ml without pouring the bottom water, and 350 ml when cooking two cups. After pouring the water, dry the ball under the glass with a rag, otherwise it will easily break the glass.

Step two, put the filter in the ball.

Take the filter out of the water, clean it, press it dry, hang the hook of the filter on the bottom of the upper ball, and then adjust the position of the filter to the middle position with the adjusting rod.

Step 3, after the water boils, insert the upper ball into the lower ball.

Turn the heat down, carefully put the upper ball on the glass into the lower ball obliquely, and when making sure that the water will not roll out too much, press the upper ball on the glass slightly straight down and rotate at the same time.

Step 4: After the water rises to half, add coffee powder, start stirring, and start counting after stirring.

Dosage per cup15g, start the first stirring. When stirring, do not turn around, but draw three-quarters of a circle from left to right, and press the powder into the water from top to bottom, so that the forces in two different directions collide with each other. Don't stir for too long, just let the coffee powder disperse.

Step 5, stir for the second time in 25 seconds.

Step 6, stir for the third time in 55 seconds, and turn off the fire in 60 seconds.

When it takes only 50 seconds to make a cup of coffee (20 seconds for the second time and 45 seconds for the third time), pull up the top ball quickly after turning off the fire, pour out the remaining water from the bottom ball, and then insert it back. This action is called pouring water. If you don't want to do this step, the water is 175? Do it.

Step 7, wipe the glass ball with a wet and cold towel immediately after turning off the fire.

Step 8: When the coffee liquid is filtered to the end, pull up the ball on the cup and don't let the last coffee flow down.

2, high pressure type

High pressure, that is, Italian, originally refers to a high-pressure and fast coffee brewing method, and later the coffee brewed in this way is also called "espresso".

When using this method to brew coffee, firstly, the grinding soft powder with the same particle size is compacted by a compactor, and the coffee bean powder in the filter must be firm and dense to form a cake-like coffee block to resist the hot water pressure of 8 ~ 9 bar during brewing. Under strong pressure, hot water found a way to soak the coffee block. When the filling pressure of the coffee block is closely consistent, each coffee bean powder can be evenly extracted by hot water, and a small cup of espresso with rich flavor can be obtained in an instant. Whether this pressure and resistance can achieve balance and symmetry is an indispensable factor in brewing a cup of thick and delicious Italian coffee.

Because Italian concentration forces hot water to pass through coffee powder quickly under the pressure of 8 ~ 9 bar, the extraction time of each cup of coffee is only about 25 ~ 30 seconds, which saves a lot of time and cost. Because the time for water to pass through coffee powder is extremely short, the grinding scale needs to be carefully stabilized.

To get good grinding quality, a good bean grinder is essential, because only by using a bean grinder with fast cutting, slow heating and uniform grinding density, with fresh coffee beans, it is possible to get a good cup of coffee.

A good cup of espresso should be strong, but not too bitter. With milk and foam, you can have a latte or cappuccino. Full-bodied espresso and delicate milk foam have attracted consumers' love in a short time, creating a booming coffee market!

3. Drip type

Drip type, that is, American coffee machine.

Such as 1 17 1, 1027pt and 152B in Kun Can. Simply put, it is drip-and-leak type, where filter paper or filter screen is placed above the container, coarse powder is put in, water is poured from above (the skill of adding water is very important), and coffee leaks out from below. Three points of attention

Beans: Good beans can make good coffee. Choose beans that suit your taste, buy them in small quantities according to the dosage, and keep them in a closed container to keep their freshness and charming fragrance.

Of course, if you have more budget, it is absolutely worthwhile to invest in a good soymilk machine. Freshly ground coffee bean powder can provide fragrance in the air and delicious brewing, so that your investment is definitely worth the return.

Water flow: the biggest skill in making coffee with a filter is to control the thickness and stability of the water flow. The steady and moderate water flow spirals outward from the center of the filter screen, stirring the coffee powder and hot water evenly like a stirring rod, and releasing all the strong alcohol and sweetness.

If you are addicted to coffee brewing with a filter, you might as well buy another beautifully shaped brewing pot at this time. Its biggest feature is the thin and long outlet pipe, so that people who have never used it can easily pour out a thin and steady stream of water, helping you to have the brewing level of a professional coffee machine in an instant. This cup of coffee is more delicious.

Warm cup: In addition, remind coffee lovers that hot coffee must be drunk while it is hot, which is the most delicious moment of coffee.

The action of heating the cup can prolong the heat of the preserved coffee. Just pour hot water into the coffee cup first, use the temperature of the hot water to warm the cup, pour out the hot water and then pour in the freshly brewed hot coffee, which will help to keep the coffee hot and prolong the time of enjoying delicious coffee.

4. Cooking

Greece or Arabia directly boils the powder with water, and don't drink the coffee grounds below when drinking.

Someone poured coffee grounds on the table for divination after drinking.

5. Cold shrinkage

Which is iced coffee. According to the third principle, water is dropped into coffee powder at a very slow speed, and the coffee obtained is cold all night.

After reading the above article, I hope it can help your life.