Coffee roaster San Douke brand introduction: San Douke R500F coffee roaster santoker

The inner pot is shaftless and does not disrupt the movement of the coffee beans.

Cast iron inner pot surface has plasma spraying far infrared ceramic emission far infrared penetration coffee beans heating outer ceramic protection inner pot open large fire can effectively avoid the beans surface burns such rapid baking firepower is valuable, otherwise the speed is fast beans are bitter.

Where you can see, where you can't see, there's better quality.

Insulation layer we are sealed with stainless steel insulation materials other domestic manufacturers of small machines have not seen inside the big machine with a 5mm aluminum foil insulation board folded under the frame, the insulation effect can be imagined.

On the burner we have a lateral fire lotus head that does not spray directly into the inner pot so that the hot air heats up much more and does not cause the inner pot to overheat.

Better accessories at no cost

In terms of product quality control, other domestic machines we basically understand that there will always be a few pieces missing in the quality of accessories, workmanship or design, but in order to save costs, we are reluctant to use good accessories.

In the thermometer, switch, pressure gauge, control knob these commonly used parts above we are willing to invest, the machine uses Fuji's thermostat, angel eye stainless steel switch with lights, all-metal control knob, Taiwan's pressure gauge. This part is one of the core of the machine, baking machine is different from fried melon seeds furnace here. Roasting coffee requires precise understanding of parameters and control. In this regard, other domestic manufacturers in order to save costs, use 50 thermometers with three no, cheap toggle switches also claim to be pure silver contacts. In fact, almost all switch contacts are either silver-plated or gold-plated. As far as we know, the products of other domestic manufacturers are priced lower, but the difference is not enough for these accessories.

Better product design

In the product design, we try our best to do the best industrial design, while other domestic manufacturers are still in the stage of realizing the function, only ask for whether there is, as for whether it is easy to use, can see, not their consideration of the problem, amazing is that such products rely on the circle of various agents touting the price is not low.

better technology

We insist on independent development in product core technology, learning rather than copying foreign products, so we have self-developed far-infrared inner pot, self-developed machine-connected computer data transmission scheme, patented insulation layer, damper, sampling spoon design. In the future, we will continue to innovate and bring better products.

About us:

Our team of professional engineers from the nuclear industry and aerospace, after four years of precipitation, bring the highest quality technology, design and quality. As a leading manufacturer in the industry, we constantly introduce new technologies and processes into the field of coffee roasters, constantly innovating to make the best coffee roasters.

R500E Coffee Roaster:

About exquisite and will-quality and craftsmanship:

In the production process, we have always adhered to the principle of providing the best quality and craftsmanship for our coffee lovers, because we know that our partners must treat coffee carefully.

Go to great lengths to get better parts

In terms of parts selection, we prefer high-quality parts to make products. This is probably one of the biggest differences in baking costs. At home, when our counterparts are still using three-no thermometers and ugly switches, we choose to use better ones.

(The so-called sterling silver contact switch is nothing more than a common silver plating process in the industry. After understanding it, you will find that it is a switch contact. And the switch we use is still gilded, but I'm really embarrassed to say it.)

Inner Pot

The choice of inner pot material is the most entangled place when making products. In the initial design, stainless steel materials can be coiled and welded, which is convenient for manufacturing, while cast iron materials are greatly invested in the initial stage, so stainless steel has become a very tempting choice. However, after testing, it was found that stainless steel inner pot could not transfer heat evenly to the whole inner pot, resulting in overheating and scalding coffee beans at some points. (Good stainless steel pots are composite structures, the bottom of the pot is generally more than three layers, the bottom layer of stainless steel outer layer, the middle layer of copper plate as an important heat conduction layer to disperse the uneven heat of the bottom of the pot, so that the internal stainless steel layer can be evenly heated.) But this kind of technical solution is used on the inner pan of the baking machine. We really can't do it.

。) (PS: Three-layer structure requires a large stamping machine to integrate the structure and exhaust the air, and, people do is a flat plate, baking machine is a round inner pot)

So after spending almost all the money at the time, we made the R500 series of cast iron inner pots out of cast iron, which we still use today.

The cast iron material makes the inner pot of R500 reach the same material level as most imported models. We were proud for a long time until we learned about plasma spraying technology.

Far-infrared materials have large-scale applications in the food industry, but no one has tried it before in the harsh environment of baking machines. Variations in temperature, pan expansion, friction, and coffee bean impact all present challenges. Until we tried to use plasma spraying technology to firmly adhere ceramic far-infrared materials to the inner pot, this problem was still solved. Knock, friction will not destroy its structure.

About maintenance:

R500 series only need to clean the place is the damper, we designed the most compact exhaust pipe for R500 in order to reduce the use of grease and smoke condensation in the long pipe adhesion. The entire R500 damper can be easily removed by opening the two buckles on the way, and the damper supports full washing. (PS: If you want)

About the use of sampling spoon

Small baking machine is easy to be affected by the environment. The sampling spoon mouth will be a channel for cold air to enter when it is pulled out. Under the 500 model, such a channel and the proportion of entering volume will be relatively large. Therefore, it is recommended to adopt the method shown in the figure when operating the sampling spoon. It is not completely pulled out. At the same time, the adjustable led spotlight of R500 can help you observe the expansion of the bean table and the change of color.

If you are used to pulling out, then we have also made a thoughtful design for you. The sampling spoon mouth is inclined upwards by 5 degrees. At the same time, the sampling spoon mouth extends a section of shielding part. Anyway, no matter how long you pull out the sampling spoon, no beans will escape from here.

The lower glass viewing window is also chamfered at 45 degrees, which provides a better viewing experience.

Damper Chapter

The design of the damper here follows the D type, which is still 100-gear stepless precision control. When the roaster works, gas combustion or electric heating causes air expansion to flow upward, which will naturally generate a positive pressure in the furnace. The function of the exhaust system is to extract hot air, roasted flue gas, etc. from the inner pot to form flowing hot air to heat coffee and take away silver skin. When the exhaust air volume regulated by the damper is lower than the positive pressure, it is the stuffy state we often say. This adjustment value is the damper of 30 gear on the R500 series. Pull out the sampling spoon at the sampling spoon mouth. It will be found that the flame of the lighter will not be sucked or blown away under this value. Another detection method is to open the lower bean switch, hand in the lower bean switch mouth can not feel the hot air to beat up that is, the exhaust valve to achieve a balanced state.

The reason why these two ways are introduced is because the air pressure is different in different places, and the air pressure is different in different seasons. There will be a slight change. The friends of the three beans can make appropriate adjustments according to this.

To sum up, it is stewing below 30, and adjusting according to exhaust gas volume above 30. An important indicator of exhaust gas volume is the comparison between the speed of exhaust gas temperature rise and the speed of bean temperature rise.

A general rule is that the exhaust temperature rises faster than the bean temperature, the bean taste will be clean but the flavor will be weak, the exhaust temperature rises slower than the bean temperature, and the bean flavor will be strong but more stuffy.

Cooling

The beans are easier to cool down, but it takes a few seconds for the fan to turn on at full speed, so it is better to turn on the fan before you are ready to serve.

Measurement and control

The function description of the control system is shown in the figure. It seems that only we know about the 500 model at present, and we have the strength to integrate the complete measurement and control system. The output of the temperature curve only needs a cable and is synchronized with the thermometer of the fuselage.

Master core technology and reject copycat technology

(PS: Missing arms and legs, copy hukyxx scheme, external pull line patch will not be ridiculed much.)

The inner pot rotation speed is controlled on the left side of the machine, so it is not photographed. If you see it, you will use it.

In the selection of measurement and control system accessories, when developing products, we looked at the existing models. At that time, most of the machines (now almost the same) were filled with 50 Taobao thermometers and 10 yuan plastic switches and toggle switches. We chose Japanese thermometers, German temperature probes, and all-metal ring lamp control switches.(The first sight of it reminded me of BMW's angel eye running lights, and then I didn't hesitate to use them), the best timer to find on the market.

Because of the deep shadow left by all kinds of shoddy products in our memory, we couldn't use these cheap parts on our cherished products in front of dozens of times the cost (later found that many colleagues still don't seem to think so...).

Of course, in the end, we sadly found that in the domestic market environment, the cost of local tyrants will not bring local tyrants pricing. To be weak, I sincerely hope you will understand...

Our proud solution is the content of the photo, like operating the gas version, through the knob to adjust the heating power, more products on the market can only achieve two to three heating tube switches, which means that the electric fire control is only three gears. PS: This design cannot be seen directly.

Temperature curve:

The output of the temperature curve requires only one cable and is synchronized with the thermometer on the fuselage.

Master core technology and reject copycat technology

(PS: If you lack arms and legs, you won't be ridiculed much if you patch the external cable.)

Electric heating plate control panel

Gas version control panel

Firepower:

Fire and damper control is the core of baking, do these two points a pot of good beans can not run away. For suggestions on controlling large and small fires at different stages, refer to Japanese coffee shop quality roasting technology. Different stages require different firepower, while Japan's slow baking method and Europe's fierce fire method are also different, we designed the R500E for fast baking and slow baking are the best preparation, four-head burner whether in the fire or small fire can be stable performance, testing, this than the existing water heater direct row has a larger controllable range.

In the difference between fire and effect, there are such test results that can be referred to.

(1)10 minutes

Dry aroma (1~10) : 8 (intense herbal flavor)

Wet aroma (1~10) : 8 (rich aroma with light herbal flavor)

Brightness (1~10) : 1

Pure thickness (1~10) : 8

Hierarchy (negative 5) : 1

Rhyme (minus 5) : 2

Overall Flavor (10-x) : 4 (bitter and sweet like Huanglian)

Postscript: After grinding beans very choking nose aroma, drink uncomfortable back to Gan. . . . . . . . . .

(2)16 minutes

Dry aroma (1~10) : 7 (with a hint of almond in addition to herbal)

Wet aroma (1~10) : 9 (rich sweet fragrance without herbal flavor)

Brightness (1~10) : 3

Pure thickness (1~10) : 6

Layers (minus 5) : 3 (sweet/slightly sour/slightly bitter)

Rhyme (minus 5) : 2

Overall Flavor (10-x) : 6

Postscript: The bean grinds clean aroma with a light sweet fragrance, and it is very comfortable to drink back sweet (slightly bitter)

(3)18 minutes

Dry aroma (1 - 10) : 7 (slightly heavier than 16 minutes of herbs and almonds)

Wet aroma (1~10) : 7 (light sweet and herbal)

Brightness (1~10) : 2

Pure thickness (1~10) : 7

Hierarchy (negative 5) : -1

Rhyme (minus 5) : -1

Overall Flavor (10-x) : 3

Postscript: After the beans are ground, they have a mixed aroma. After drinking, they are slightly sweet and bitter.

(4)23 minutes

Dry aroma (1 - 10) : 6 (lighter than 16 and 18 minutes of herbs and almonds)

Wet aroma (1~10) : 8 (sweet)

Brightness (1~10) : 2

Pure thickness (1~10) : 7

Hierarchy (negative 5) : 0

Rhyme (minus 5) : 1 (slightly sweet)

Overall Flavor (10-x) : 4

Postscript: After grinding the beans, a little bit of miscellaneous flavor, slightly sweet/slightly bitter/a little sweet

Gas version and electric version of the same, through the knob can be smoothly adjusted fire size and stable maintenance. Gas version of the pressure gauge and electrothermal version of the electrothermal gauge can accurately indicate the current fire, time, throttle, fire, temperature these parameters are important basis for replication baking. The R500 series can be easily replicated by connecting a computer to automatically record temperature changes over time, supplemented by dampers and fire. The R500E is designed for greater stability and easier replication of the baking process.

About Silver Skin Cleaning

About the silver skin collector, the explanation inside the picture is very detailed, this is the most convenient solution we know at present, open the door, sweep, ok. Moreover, the whole process only needs one person to operate with one hand.

Conclusion:

Roasting coffee has always been a good business, but considering that it would be distracting and that the profits from this business would conflict with our roaster (the better the roaster, the more people would use it), we chose the latter between making money and doing something that would change the world around us.

The thing that makes me most happy today is not how well our devices sell, but whenever I walk into a strange city, walk into a corner cafe, see the devices we made, and meet people who have dreams like us, talk a few words, and make friends.

Nothing could replace such a sense of surprise and pride.