Will the heat generated by the bean grinder affect the extraction of coffee powder?

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If you are a barista, will you pay attention to the temperature change of the coffee powder from the bean grinder?

Will the heat generated by the bean grinder affect the extraction of coffee powder?

Of course, the relationship between the temperature of coffee powder and coffee quality is often ignored.

Does your bean grinder heat the coffee powder?

Nowadays, there are many different types of bean grinders to choose from. However, whether it is a round knife or a flat knife, ceramic or metal, fine coffee usually uses a cutterhead grinder rather than an oar grinder (for example, the cutter head of a soymilk machine). The cutter head of the knife head type bean grinder is generally composed of two parts, and the distance between the two cutterhead assemblies determines the size of the grinding particles.

When the grinder starts, the cutter head starts to rotate and grind the coffee beans into fine particles.

However, this process involves friction, which generates heat. This heat is then transferred to other parts of the grinder and, of course, affects the coffee itself. Therefore, unless you are using very professional equipment, the temperature of the grinding chamber will vary according to the working time.

Of course, professional bean grinders usually have a cooling system, which is made up of fans, heat exchangers and heat sinks. However, although these systems can cool machines, they rarely lower the temperature accurately, nor can they monitor the temperature of coffee. Depending on the grinding speed, busy production and idle time, the grinding temperature may rise from 20 ℃ to 80 ℃, with a floating range of 60 ℃. Such temperature changes will affect the extraction and consistency of coffee.