Passage system of vacuum cleaner

A passage system of a vacuum cleaner, comprising:

• an ejector suction passage which is connected to one end of an outer surface of a motor case to reutilize air which has been exhausted from a suction motor;
• an ejector formed at the end of the ejector suction passage for accumulating air that has passed through the ejector suction passage;
• an ejector nozzle formed at one end of the ejector for exhausting the air at a high speed and under a low pressure;
• a second suction passage having one end placed at a predetermined distance from the ejector nozzle and the other end connected to a dust collecting bucket, such that the air discharged from the ejector nozzle and the air existing in an ejector chamber are simultaneously drawn in together into an ejector chamber and thereafter flows in the direction of a suction motor,
• an ejector chamber which is formed in the inside of the ejector nozzle, and one end of the second suction passage is connected in the ejector chamber so that an inside of the ejector chamber remains under a low pressure;
• a second suction nozzle formed at a predetermined position in the ejector chamber to draw in the outside air at a high speed;
• a first suction nozzle placed at a predetermined position of the vacuum cleaner to draw the air in at a high velocity by a suction force generated by the suction motor;
• and
• a first suction passage having one end which is fastened to the first suction nozzle and the other end is connected to a predetermined part of the dust collecting bucket, in a manner such that outside air which is drawn in via the first suction nozzle, is guided toward the suction motor.