Patent ID: 8904918

Claim:
A hybrid type air-compressor comprising: a main body including a cylinder having opened upper and lower portions; a motor assembly including an eccentric shaft passing through a side surface of the main body and rotated eccentrically in the cylinder; a first communication part covering an upper portion of the cylinder of the main body for introducing air and discharging air to the upper portion of the cylinder; a second communication part covering a lower portion of the cylinder of the main body for introducing air and discharging air to the lower portion of the cylinder; an air compressing means connected to the eccentric shaft of the motor assembly and moved vertically in the cylinder to alternately compress air introduced into the upper and lower portions of the cylinder; and wherein the main body comprises an air introduction hole passing through the cylinder for bypassing and introducing some of air introduced into the first communication part into the lower portion of the cylinder; and comprises an air discharge hole passing through the cylinder for discharging air compressed in the lower portion of the cylinder.