Built -in waterproof dirt -proof engine of suck -back protection device that admits air

The utility model relates to a built -in waterproof dirt -proof engine of suck -back protection device that admits air, it sets up on main engine body, compared with the prior art, the utility model relates to a rationally, compact structure and convenient to use. 本实用新型涉及内置倒吸防水防尘的发动机进气保护装置，其设置在发动机主机上；包括设置在其内部的倒置迂回气路以及位于倒置迂回气路下端且与倒置迂回气路端连通的空气进口，倒置迂回气路的另端与发动机主机的化油器连通。本实用新型设计合理、结构紧凑且使用方便。