Device and method for cleaning air cooler core of marine low-speed diesel engine

The invention discloses a device and method for cleaning an air cooler core of a marine low-speed diesel engine. The device comprises a water supply pipe, a water inlet valve, a nozzle, a funnel, a water storage tank, an air supply pipe, an air inlet valve, a first control valve, a second control valve and a third control valve, wherein the water supply pipe is connected with the water storage tank sequentially through the first control valve, the funnel and the water inlet valve, the air supply pipe is connected with the water storage tank through the air inlet valve, the upper face of the water storage tank is connected with a ventilation valve, the outlet of the water storage tank is connected with the nozzle through the second control valve, the nozzle is arranged above the air coolercore, a water return pipe is arranged below the air cooler core, the water return pipe is connected with a water escape valve and a side release valve, and the third control valve is connected to theoutlet of the water storag