The coffee roasting machine is needed in our darily life. The coffee roaster machine with different types. There will show you  three types of coffee roasting machine.

1:Hot air coffee roasting machine
The hot-air type bake bean machine uses the blower to inhale the air, let the air rise through a heating coil to increase the temperature, and uses hot air as a heating source to roast the coffee beans. The hot air not only can provide the required temperature for baking, but also can utilize the airflow. The power churns the coffee beans and kills two birds with one stone.

Advantages: high thermal efficiency, fast heating, raw beans more uniform heating, easy to control.
Disadvantages: Because the heating efficiency is high, it is easy to cause the heating up too fast, resulting in beans "cracking", and the heating is too high, it is easy to make the caramelization reaction is not enough.

Flavor characteristics: The acidity is obvious, the taste is relatively clean and simple, but the richness of the taste is not enough and the depth is lacking, and deep baking tends to produce a pungent taste.

2:Direct fire coffee roasting machine:
As the name implies, the direct fire type uses the flame to directly heat the coffee beans. Since its evolution, the “fire” of direct fires includes infrared and electric heat pipes in addition to ordinary flames (including gas fires and charcoal fires).

Advantages: Longer baking time makes caramelization reaction more abundant and rich in taste.
Disadvantages: easy to cause uneven baking, poor control of the heat is also easy to burn coffee beans, the formation of coke bitter.
 
3:Semi-hot fire semi-hot air coffee roasting machine
Combining the direct fire type and hot air type coffee roasting machine methods is the mainstream of current commercial roasting machines. Semi-direct fire baking is similar to direct fire baking, but because there is no hole in the outer wall of the baking container, the flame will not come into direct contact with the coffee beans; in addition to the ventilation device, the outside of the baking container will be added. The hot air is introduced into the roasting chamber to improve the baking efficiency. Another function of this air extraction device is to suck out the peeled silver (the film attached to the outer layer of the coffee seed) to prevent the silver skin from burning in the baking chamber due to the high temperature. , And then affect the taste of coffee beans. (Some of the so-called charcoal coffees don’t discharge silver skin, causing the coffee beans to be contaminated by smoked charred flavor).

The semi-fired semi-hot air type coffee roasting machine has the advantages and disadvantages of the direct fire type and hot air type, but the heating method is changed according to the adjustment of the hot air and the boiler rotation speed. The larger the hot air is, the faster the speed is, the closer it is to the hot air type; otherwise, the closer it is to the direct fire type.

The third one coffee roasting machine is what we provide. The type bean roasting machine is more suitable if you need roasting coffee in high efficiency. We have the coffee roasting machine working video, can provide it, if you need. Any problem you can contact us freely. Email: wendy@machinehall.com  Phone/whatsapp:+8618539931566.