▎ 摘　　要

NOVELTY - Silencing pre-heating device comprises a silencing preheating unit comprising a heating part is set on two sides of a silencing part. The silencing part comprises a multiple of temperature equalizing plates arranged in parallel. The silencing part is provided with an air inlet side and an air outlet side. The temperature equalizing plate is filled with silencing material. The silencing pre-heating unit is connected with the gas hot water boiler air supply system for silencing and preheating the air supply. The silencing material is silencing cotton comprising composite phase-change paraffin particles containing paraffin, polyethylene and graphene. USE - The silencing pre-heating device is useful for air supply system of gas hot water boiler. ADVANTAGE - The silencing pre-heating device can reduce the generation of condensed water in the air supply system and pipeline corrosion rate and ensure the normal operation of the boiler system. DESCRIPTION OF DRAWING(S) - The drawing shows a structure schematic diagram of the silencing pre-heating device provided by the embodiment 1.