Liquid storage device of air compressor

The utility model discloses an air-conditioning compressor reservoir, which comprises a straight red copper elbow, a cylinder, a straight steel pipe, a steel pipe shroud, wherein, the steel pipe clothed with the steel pipe shroud on one end is inserted into the cylinder; the red copper elbow connects the steel pipe with the steel pipe shroud outside the cylinder. The utility model is characterized in that a steel pipe shroud is arranged between the steel pipe and the cylinder; that the straight red copper elbow and the straight steel pipe improves the matching length and gap between the steel pipe and the cylinder; that the welding condition and quality between the red copper elbow and the cylinder are improved; that the outer red copper elbow and the connecting part between the inner steel pipe and the steel pipe shroud are in the shape of straight pipes, assuring enough welding length and gap among the three; and that the addition of the steel pipe shroud requires the diameter of the punched hole to be enlarged in order to effectively increase the height and straightness of the turned-over edge so as to create longer matching length and even matching gap easy for welding.