Biomass fuel water tube type heat exchange vacuum hot water unit

The utility model provides a biomass fuel water tube type heat exchange vacuum hot water unit and belongs to the technical field of heat exchanger units. The biomass fuel water tube type heat exchange vacuum hot water unit structurally comprises a combustion device and a boiler furnace, the boiler furnace is connected to one side of a feeding device and one side of the combustion device, the boiler furnace is a horizontal type boiler furnace, a boiler furnace sandwiched shell cavity is formed in a boiler furnace shell and is filled with heating medium water, smoke at the tail end of the inner cavity of the boiler furnace turns upwards and is communicated with a water tube heat exchanger, the water tube heat exchanger is arranged horizontally, an inner cavity of the water tube heat exchanger and the inner cavity of the boiler furnace are arranged in parallel, smoke-water heat exchanging tubes are arranged in the water tube heat exchanger, a heat supply and heat exchange tube bundle is arranged in a sandwiched shell cavity on the water tube heat exchanger, and a pressure gauge, an exhaust valve and an explosion-proof device are arranged on the sandwiched shell cavity on the water tube heat exchanger. The biomass fuel water tube type heat exchange vacuum hot water unit is developed aiming at the situations that the utilization rate of biomass is low, and combustion safety is poor, the heat efficiency of a biomass hot water unit is improved by adopting a vacuum structure, and the safety problems during operation are reduced.