Nested integrated smoke detection labyrinth

The invention provides a nested integrated smoke sensing detection maze, which comprises a maze main body provided with long-strip light blocking ribs and smoke inlet short light blocking ribs which are distributed in a circular radial shape, a central area is a smoke effective detection area, a gap between any adjacent light blocking ribs forms a smoke inlet channel, a nesting space is formed above the smoke inlet short light blocking ribs, and the nesting space is used for nesting the smoke inlet short light blocking ribs. The layout module is used for laying a PCB (Printed Circuit Board) kit; a mirror reflecting surface is arranged on the end surface of the inner side of at least one strip-shaped light blocking rib; and the labyrinth cover covers the upper parts and the outer sides of the labyrinth main body and the PCB suite, and is connected with the bottom plate to form an integrated smoke detection labyrinth. And the mirror reflecting surface is combined with the Y-shaped light guide plate arranged in