The coffee machine passes about 10 grams of fine coffee powder with hot water at about 90°C under a pressure of 20 Pa, absorbs the coffee fat and other aromatic substances in the coffee powder, and dissolves the hot water into the cup. The whole process is a comprehensive process of physical and chemical changes, and it must be completed within 18-28 seconds to effectively avoid unpleasant taste caused by excessive extraction. The high-pressure steam produced by the coffee machine is used to emulsify milk to produce fragrant milk. Add thick milk to espresso coffee to turn into delicious cappuccino. Obviously, the role of the coffee machine is decisive for the production of high-quality espresso or cappuccino.
However, in the working process of the coffee machine, the work of the grinder inside the machine is indispensable. The grinding device has a bean bin, and there is a grinding body under the bean bin. The grinding body has a rotary grinder and a static grinder. The grinding motor drives the grinder to make Coffee beans become extractable powder. The grinder has a variable speed gear box and a connecting mechanism. Among them, plastic gears use food-grade gear grease. The grease requires a stable phase and cannot separate the oil, which can effectively reduce noise and extend the life of the gear.
In the extraction system of the coffee machine, while different motors drive the drive to complete the extraction, in order to achieve the best extraction effect and ensure the taste of coffee, the extraction system uses different gear structures, so the food grade gear grease needs to be reduced. Noise extends the life of gears.
Because the water flowing through the coffee requires the water to be heated in the heating plate device to boil and heat evenly, the manufacturer uses a ceramic plate heating device to embed the electric heater in the ceramic plate, and there is a certain gap between the heater and the ceramic plate. Therefore, the effect of influencing heat conduction is that the high thermal conductivity silicone grease adopts the most basic thermal conductivity material of metal oxide, which greatly improves the thermal conductivity and reduces the power consumption of the product.
Coffee manufacturers need to use sealing rings on the part where the container is connected to the body and the part connected to the pipe, but in order to further improve the sealing effect of the sealing ring, it is recommended to use food-grade sealing grease. After the coffee machine is heated, it will become high temperature. Considering the sealing effect of the sealing ring, it has excellent high temperature resistance and good compatibility with the sealing ring (except for silicone rubber). It will not lose high temperature. Sealing performance for water contact.
