This research is intended to (1) design of a vacuum device, the rocks of all sizes in the area (2) study of the effectiveness of the equipment for the design of experiments in the laboratory by studying production processes, the quantity of dust, rocks of all sizes. The physical characteristics that affect the effectiveness of the desired vacuum equipment, stone designed by design principles with a specific ventilation system design, design of experiments in the laboratory-controlled physical factors that affect all devices. The set of all 5 degrees angle, and the distance from the origin range with 3 stores, for example, the quantity of dust, rocks of all sizes a way to stick a person to use a comparison, the average percent of dust, rocks falling from the equipment before and after the experiment in the lab. Research has found that all vacuum accessories 2 1 with the required flow rate m3/s is equal to the capacity of the fan 0.632 is equal to the measured results 160.52 Watts to get the experience that a person. In the section of the degrees and the distance from the origin to the proper installation of the device. I found that the best spot is a 90-degree angle — the distance from the origin 20 cm. per cent of dust reduction equals a 2 wide 73.46 fan that can be adjusted to 3 levels of strength levels, thus breaking the test 3 times and the calculation of the required flow rate m3/s is equal to the capacity of the fan, 1.202 is equal to Watts, it was found that the level of 22.05 of the fan 3-point level at 90-degree angles, the best is the distance from the origin 20 cm. per cent of dust reduction equal to 77.27.คำสำคัญ: ประสิทธิผล อุปกรณ์ดูดฝุ่น ปริมาณฝุ่นหินทุกขนาด ลักษณะทางกายภาพ กระบวนการผลิต
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