The Chronicle of HB Coffee Roasters understand the History of HB Coffee Roasters

In the first generation, all stainless steel built 1kg baking machine, one of the first problems was that the drum hit the front panel and made a squeaking sound. It was a headache at the time. This problem in the latter generation after the bearing added traction spring, to prevent the roller forward, miso to the panel; the initial generation of the diaphragm is too thin, and is stainless steel material, the material after heating expansion coefficient is too large, resulting in deformation. In the descendants used a 10mm thick steel plate, roller motor and roller shaft, not conducive to continuous baking caused by the motor too hot. Later generations of motor sinking installation and changed to chain drive, hot air fan power is too small, coffee smoke is not smooth, deep baked beans smoke smell is very heavy, then changed to a high-power fan

The fire grate is the stove head, and the fire power should not be controlled.

generation,

The wind temperature is measured by mechanical thermometer, but the accuracy is too poor to be accurately read. After that, k type temperature probe is used, and electronic thermometer is used to read it.

Silver skin collection external, indirect aluminum foil tube, due to the air duct is too long, fan power is not enough, the descendants of the change and host integration, shorten the flue;

The bean temperature probe is too short and does not go deep into the coffee bean layer. The bean temperature measured is too low. Then change the temperature measurement point and lengthen the probe.

Second generation,

The concept of damper is added, and the electronic damper is used, but the precision is too low, and the mechanical flapper damper is changed in the later generation.

The temperature measuring point of beans is too high, and the temperature of beans cannot be measured effectively when a small amount of baking is done, so the temperature measuring point is changed later.

Three generations, the last generation of 1kg models, should be said to be a relatively perfect generation, not a big problem, can only say insufficient. First of all, cooling can not be stirred, can not automatically produce beans, drum stirring sheet manufacturing process is complex, not suitable for mass production. Silver skin collection mesh cleaning cycle is too short, not suitable for cleaning, roller motor chain connection, melting rate is too low. The gas needs to be manually turned off. If you forget the danger of fire, maintenance is very inconvenient.

Everything points to the imperfection of the structure, which also makes me decide to subvert the design improvement, so there are four generations, the first generation 2kg

By the fourth generation, there will be more retention, and the problem will also receive more attention.

According to batch order, there may be several problems in use:

The cooling plate is too loose, causing the sliding door to be pushed open and the coffee beans to be scattered when cooling.

The roller and the front panel scratch, and even jam the roller. After the bearing tension spring sent too much, failed to effectively pull the roller, after the batch replacement spring, the problem was solved.

Five generations, the latest generation, in the fourth generation, is a subversive change, while maintaining the same appearance as the fourth generation, the internal structure has been redesigned subversive. Bean temperature probe oblique insertion design, so that bean temperature reading more accurate

The overall improvement of the drum manufacturing process has resulted in higher manufacturing accuracy. Completely updated roller bearing installation structure, two bearings away from heat source, completely extended maintenance cycle, front panel and bearing clearance adjustment is more convenient

The heat source part has been upgraded, and the wrapped heat radiation guiding structure further improves the economy of the gas and ensures more uniform baking. Improved the addition of insulation layers and additional heat dissipation structures, fully prepared for continuous baking

Improved damper structure with higher accuracy than before. And hid the damper electronic assist system. Gas flameout alarm is added to ensure the safety of gas use. Gas filtration and flameout alarm are added to ensure the efficiency and safety of gas use. There are many more improvements waiting for you to discover.