Abstract: A door checker for a vehicle includes a hinge rotatably connecting a door to a vehicle body and having a shaft, a slider penetratingly inserted into the shaft and linearly moving with rotational force of the shaft, and a checking unit linearly reciprocating in a radial direction of the shaft by the slider. By implementing a manipulation feeling in opening and closing a door by increasing a section for checking the door by converting a rotational movement of the door into a linear movement based on a screw principle, operability can be improved to enhance marketability, and durability can be enhanced by increasing the section for implementing operating force for opening and closing a door.

Abstract: A dust collector separates dust from the gas including the dust such as smoke discharged from a coffee roasting machine. The dust collector uses a water spray. The dust collector can prevent blockage of nozzles of a upper water supply line and a side water supply line by arranging the upper nozzle and the side nozzle, which spray water, to be faced to each other within the body of the dust collector. Water flows along the side within the inlet which is slant downward, which allows the gas to flow into the body of the dust collector, and a separate assistant water supply line is connected to the inlet.

Abstract: A door checker for a vehicle includes a hinge rotatably connecting a door to a vehicle body and having a shaft, a slider penetratingly inserted into the shaft and linearly moving with rotational force of the shaft, and a checking unit linearly reciprocating in a radial direction of the shaft by the slider. By implementing a manipulation feeling in opening and closing a door by increasing a section for checking the door by converting a rotational movement of the door into a linear movement based on a screw principle, operability can be improved to enhance marketability, and durability can be enhanced by increasing the section for implementing operating force for opening and closing a door.