With the development of technology, there are thousands of types of roasting machines on the market, which can be confusing for novices. What type of roasting machine is suitable for you? One of the ways to choose is Choose by type. The following is a classification of roasting machines from different angles to help novice roasters choose a roasting machine that suits them.
1. Classification by heat source
I. Heating by gas/natural gas
Use gas as the heating source to heat the entire cavity. The advantage is that the heat source is quite sufficient. Through proper operating conditions, coffee beans can obtain rich taste and smell. It is a very suitable model for coffee lovers who like rich taste. For example, our HDG-serial model uses gas as the heating source. machine model.
| Manually operated gas roaster(600g~15kg) | Intelligent gas roaster(1kg~15kg) |
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| Advantage features | Advantage features |
| 1. Easy to operate 2. Gas safety system design 3. System stability 4. Simple maintenance 5. Many Various temperatures and various parameters (such as pressure difference/humidity) 6. A variety of customization options (such as direction/barrel thickness/silver barrel…, etc.) 7. Support artisan/cropster Software< /td> |
1. Exclusive system roaster mode for stable operation 2. Exclusive stable preheating automatic control system 3. Exclusive production mode (1.2kg smart machine also Possible) 4. Visual data analysis and reproduction 5. Energy consumption data control and analysis 6. Baking data storage and management 7. Support artisan/cropster Software |
II. Electric heating
As the name suggests, coffee beans are roasted mainly using the heat source generated by electric heating tubes. It is one of the very easy types for novices to get started with, because the carbon particles produced during heating are relatively different from the gas heating source. Much less, so most coffee beans roasted with electric heat as the heating source usually produce a cleaner and more balanced taste. What you need to pay more attention to during operation is that the temperature displayed during general electric roasting is better than that of gas. Delay, so the baking method also needs to be different depending on the heating source. Since electricity is used as the heating source, the current used by this type of machine will be higher. It is usually recommended that the user must set up an independent independent power supply in the area of use. The power system will work to ensure a stable power supply. For example, our HDE-serial model uses electric heat as the heating source
| Manually operated electric heater(600g~3kg) | Intelligent electric heater(600g~3kg) |
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| Advantage features | Advantage features |
| 1. Easy to start for professional novices 2. Ease of use 3. Sufficient heating for easy baking 4. Equipped with sample machine features />5. Thick pot can roast coffee with a rich and clean taste |
1. The store assists the store in producing tools 2. A dedicated continuous intelligent production machine for specialty coffee, which can roast half a pound continuously 3. Provide data for 50g sample roasting Analysis to help roasters roast high-quality specialty coffee 4. A suitable machine for coffee teaching, leading students to teach easily step by step 5. The glass jar dust bucket is easy to observe and can be poured at any time when it is full</br /> td> |
III. Heating with hydrogen
It is a similar system to the gas roaster. The difference is that instead of using gas as the heating source, it uses hydrogen as the heating source. Hydrogen combustion meets the needs of green energy and environmental protection. It is a development target in the future. Using hydrogen as a combustion source will not produce carbon dioxide but can still create enough heat energy for roasting. The coffee roasting industry can also continue to develop towards net-zero carbon emissions, just like Probat, a major foreign manufacturer, has also developed a roasting machine that uses hydrogen energy as a heating source (Reference link)
The biggest difference between using hydrogen as a heating source and burning gas is that hydrogen combustion does not produce carbon emissions, that is, there will be no carbon particles due to incomplete combustion of coffee beans. Attached, the coffee beans will have some burnt and bitter taste. If done properly, coffee beans with rich and clean texture will be roasted. It will be a very advantageous heating source in the future
IV. Heating with infrared rays
This type of heating source is divided into infrared rays generated by gas burning ceramic sheets and electric heating infrared lamps. Infrared rays can be divided into near infrared rays and far infrared rays. Different wavelengths of infrared rays are targeted at different Baked goods will produce different heating effects, so the flavors produced are also different
| Infrared rays produced by gas burning ceramic pieces | Infrared lamp |
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V. Microwave heating
The principle of microwave heating relies on the existence of electric field to interact with molecules in the following two ways to generate heat energy:
A. Dipolar Rotation: Molecules It will continue to rotate back and forth, so that its dipole (Dipole) changes continuously back and forth and is aligned with the direction of the electric field. The friction between each rotating molecule will generate heat.
B. Ionic Conduction: One or more free ions translate in space, trying to align with the changing electric field direction. Just like dipole rotation, friction between these moving substances generates heat energy. The higher the temperature of the reaction mixture, the higher the efficiency of energy transfer.
Roasters that use this as a heating source are rare on the market. The flavor and taste of coffee beans roasted purely by microwave heating are also quite rare in ordinary coffee shops. Even so, they cannot be roasted in the usual way. FALAI is suitable for this type of roaster.
VI. Multiple heat source heating
The advantage of a coffee roaster that uses two or more of the above types of heating sources is that it can obtain the characteristics of various heating sources to produce a unique flavor in the coffee beans. , the disadvantage is that the operation of this type of machine is usually complicated, and it is difficult to compare the data with other roasting machines. The baking method is also relatively unique, which requires more time and cost to capture the characteristics of the machine. In terms of machine cost, It is also higher than the previous ones
2. Classification based on the way the beans contact the heat source
This classification concept is based on how the beans contact the heat source
I. Semi-hot air
If the coffee beans are in contact with the heat source When the roller and hot air come into contact with the heat source, it is called semi-hot air. The heating source is used to heat the flowing air and the roller, and the beans are heated by the heated roller and hot air. This type of machine has a long history of development. It is not only the most popular The common form is also a machine with relatively high stability. It is easy to operate and has a lot of reference data in the market that can be analyzed. Baking methods that can be exchanged and discussed in the baking industry are very friendly to novices. Model
II. Full hot air
This type uses the heating source to only heat the air and uses the hot air to roast the coffee beans. According to the structure, it is divided into two types, one is vertical This type of roaster uses glass as the roasting cavity and the air is blown from bottom to top to stir the beans and heat them. The feature of this type of roaster is quite eye-catching, and you can visually observe the changes in the color of the beans. It is one of the major advantages. The other is a traditional roaster shape. The appearance is not particularly different from the general semi-hot air model, but its heat source is not installed under the drum but is installed where the air flows into the heating cavity. As before, the advantage of this type of roaster is that it has a clean and balanced taste and greatly slows down the adhesion of carbon particles.
If classified by heating source, it can also be divided into gas and electric heating types. In terms of energy efficiency, the overall thermal efficiency of full hot air is basically low. Therefore, if it is an electric heating model, its energy consumption is compared with that of the same specification. The semi-hot air or direct fire is much higher. In addition, the cost is relatively much higher.
III. Direct fire
When the heating source can directly heat the coffee beans, we can say that this type is direct fire type. If the heating source is further classified, it can be divided into electric heating and gas type. State, the common method of direct fire heating is to use a drum with porous holes and the bottom of the drum as the heating source to heat the beans. Another type of electric heating is to place the heating source in the middle and then heat the beans directly. Beans, this type of machine also has a certain gap with the semi-hot air roasting method. However, the characteristic of direct gas roasting is that as long as it is operated properly, it can produce coffee beans with rich layers. Compared with other types of machines, this type of machine has a certain gap. The roaster type requires more time to maintain, and I think it is the most difficult type for novices to use
| HDG-3KR direct-fired roaster |
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| Advantage features |
| 1. Unlike ordinary direct heaters, the temperature does not jump greatly, but rises/falls steadily 2. Equipped with a professional gas controller, the firepower can be easily adjusted 3. It can be combined with mechanical damper and stepless damper operation to meet both modern and traditional operating needs 4. The direct heater pays great attention to maintenance, and the maintenance method is quite simple. Quick maintenance saves time and keeps the heating cavity inside. Clean 5. Can support artisan/cropster software |
3. Classification based on needs
I. Player type
Mainly to experience the fun of roasting beans. In addition to drinking delicious coffee, you can also enjoy the roasting process. In the process of roasting beans, the number of grams that can be roasted by this type of machine usually falls between 50 and 200g. This type of machine generally has poor stability and is not suitable for sample roasting and boutique roasting. Its biggest advantage is that it is cheap. , the difficulty in using it is not only the stability problem, some models even have to clean up the surrounding environment, and they are also dangerous to a certain extent. You need to pay more attention to safety during operation.
II. Professional type
If the user relies exclusively on selling coffee beans for income, they need to consider their professional needs, such as: the need for temperature data analysis, whether sample analysis is possible, the stability/convenience of the machine, and whether the machine has roasting data management capabilities. &hellip ;There are many considerations related to professional issues. Generally, the price of this type of machine is much higher than that of players or home-use models with the same specifications, so price is also one of the factors that need to be considered.
III. Home-use model
When you don’t know how to roast coffee and find it quite troublesome, but you still want to drink delicious and fresh coffee and experience the fun of roasting coffee, I think a household roaster is a good option, providing one-click For traditional coffee roasting, you can directly purchase 1~3kg of green beans for long-term storage. When the coffee beans are almost finished, weigh half a pound or one pound for fresh roasting. In addition to maintaining the quality of the coffee beans, you can also quickly roast them. Tasting the aroma of coffee is also a very good option for home users who have a firm need to drink coffee