Classification of coffee grinders

The operation method of this kind of bean grinder is quite simple, as long as you follow the instructions on the instructions, it can be easily used. Generally speaking, it has two setting functions, one is the grinding degree setting, the other is the grinding time setting. The degree of grinding is mostly expressed in Arabic numerals, and the smaller the number is, the finer the grinding is. Some clearly indicate the grinding range of various brewing methods. For example: Filter, Espresso, etc. The range of Filter is suitable for drip and follicle brewing methods, while Espresso is suitable for espresso, and the instructions will also specify the application of various grinding degrees.

The bean grinder has a funnel-shaped container containing unground beans. The longer the time is set, the more beans will fall into the grinder, the more coffee will be ground. As the fresh-keeping effect of the box is not good, it is recommended to drink as much as possible and drink it after grinding it at one time. Other beans can be stored in vacuum cans or fresh bags and can be grinded next time.

1. Types of sawtooth bean grinders

There are two types of sawtooth grinders: one is a planar sawtooth knife and the other is a three-dimensional conical sawtooth knife.

(1) Planar serrated cutter

The flat machine consists of two annular blades with sharp sawteeth on the circumference. After starting, the coffee beans are brought between the blades and are instantly cut and crushed into fine particles. As far as household appliances are concerned, the flat sawtooth grinder is the closest to a commercial large bean grinder, similar to a bean grinder in a coffee shop.

(2) three-dimensional conical serrated cutter

The tapered bean grinder is composed of two pieces of tapered iron, the surface of which is covered with serrated teeth. The gap between the two pieces of iron is where the coffee beans are ground into powder. The conical serrated cutter produces the lowest friction temperature and can form uniform grinding. Both commercial machines and manual bean grinders use conical serrated cutters.

2. Matters needing attention in the selection and purchase of sawtooth bean grinder

The bean grinder with higher power has faster grinding speed, the coffee powder stays in the sawtooth room for a shorter time, and can grind the low-temperature coffee. Generally speaking, the power of bean grinder is between 70 watts and 150 watts, and the higher the power, the better.

The grinding effect of some coffee grinders is very poor, and the coffee powder is not fine enough. When brewing espresso, the extraction is insufficient, making the finished product tasteless, so for grinding espresso, special attention should be paid to the precision of the grinder to make sure that it can grind a uniform and meticulous coffee powder, so as to brew a good coffee.