Efficient energy-saving device for vacuum hot water boiler

The utility model relates to the technical field of boiler waste heat recovery, in particular to an efficient energy-saving device for a vacuum hot water boiler. The efficient energy-saving device for the vacuum hot water boiler comprises a smoke exhaust box and a flow dividing piece, coiled pipes are installed on the two sides of the smoke exhaust box through installation frames, a water accumulation box is fixedly installed at the top of the smoke exhaust box, a water storage box is fixedly installed at the bottom of the smoke exhaust box, and the flow dividing piece is arranged in the smoke exhaust box. According to the efficient energy-saving device for the vacuum hot water boiler, the V-shaped plates and the folded plates are additionally arranged, the stroke of smoke in the smoke exhaust box can be prolonged, the heat exchange effect on water is improved, heat loss is reduced, the additionally arranged cooling fins can absorb heat on the smoke exhaust box and dissipate the heat outwards in a concentrate