Swing type gas compressor

The invention discloses a swing type air compressor. The swing type air compressor comprises a support base and a compressor body connected to the support base, wherein the middle of the compressor body is provided with a power shaft; the compressor body is provided with at least one compressing unit for compressing air by the driving of the power shaft; each compressing unit comprises an arc air chamber, wherein an inner cavity of the air chamber is arc and the arc center is coincided with the axis of the power shaft; the arc air chamber is connected with an air intake unidirectional valve and an air exhaust unidirectional valve which are communicated with the inner cavity; the inner cavity of the arc air chamber is internally provided with a piston; a centering mechanism which enables the piston to swing in the arc air chamber by taking the power shaft as a revolving center is connected between the piston and the power shaft; the compressor body is provided with a power mechanism which is connected with the power shaft and drives the piston to swing by the centering mechanism. The swing type air compressor is simple and compact in structure, and has the advantages and effects of continuous air intake and exhaust and high compressing efficiency.