Low-pressure pulse supercharger

A low-pressure pulse supercharger relates to the field of machinery and comprises a metal shell, a built-in cavity is arranged in the metal shell, an elastic drum membrane is arranged in the built-in cavity and divides the built-in cavity into an outer supercharging cavity and an inner adjusting cavity, the inner adjusting cavity is communicated with an air inlet pipe and an air outlet hole, and the air inlet pipe is communicated with the air outlet hole. And the outer pressurizing cavity is communicated with a hydrogen inlet pipe and a hydrogen outlet pipe. According to the device, the hydrogen pressurizing effect is improved in the mode that the air pressure changes to cause elastic deformation of the tympanic membrane so as to change the hydrogen pressure, and the phenomenon of excessive dependence on a hydrogen pump is effectively avoided. And meanwhile, the flow of gas flowing through the low-pressure pulse supercharger can be controlled according to the actual requirements of external working conditions