This utility model belongs to the field of
air compressor technology, specifically relating to a low-pressure start-up vane
air compressor. It includes a body with a mounting cavity formed within it. A rotor is eccentrically mounted within the mounting cavity, with shafts at both ends. Several mounting slots are formed along the circumference of the rotor, and vanes are mounted within these slots. An inlet chamber is located on the lower side of the mounting cavity, and an outlet chamber is located on the upper side. A
volume change chamber is located between the outlet chamber and the inlet chamber. An air passage hole is formed on the side wall of the
volume change chamber, and a one-way oil valve
assembly is installed outside the air passage hole. The outlet of the one-way oil valve
assembly is connected to the outlet. This utility model, through the design of the one-way oil valve
assembly, allows some of the air pressure in the
volume change chamber to directly enter the outlet through the air passage hole and the one-way oil valve assembly when the
air compressor is first started. This reduces the starting power of the air compressor and lowers motor
energy consumption.