Exhaust gas energy recovery type air compressor for fuel cell

A waste gas energy recovery type air compressor for a fuel cell relates to the technical field of air compressors for fuel cells and comprises a high-pressure stage, and a turbine is coaxially and rotatably mounted on the high-pressure stage through a rotor shaft. The volute air inlet flange is connected with the hydrogen fuel cell engine exhaust manifold, waste gas energy exhausted by an engine is recycled and serves as a power source to drive the rotor shaft to do work, the waste gas energy of the engine is recycled, and the overall efficiency of an air compressor is improved; the motor serves as an auxiliary power source to drive the rotor shaft to rotate and do work, motor consumption is reduced, and motor reliability is improved; the axial force of the whole machine is reduced, and the bearing capacity of the bearing is improved. 一种废气能量回收型燃料电池用空压机，涉及燃料电池用空压机技术领域，包括高压级，高压级通过转子轴同轴转动安装有涡轮机。本实用新型的涡壳进气法兰连接氢燃料电池发动机排气歧管，将发动机排出的废气能量进行回收，做为动力源驱动转子轴做功，实现了回收发动机废气能量，提高空压机整机效率；将其作为辅助动力源驱动转子轴旋转做功，减少电机消耗，提高电机可靠性；降低整机轴向