Labyrinth of vertical multi-optical-path bidirectional scattering smoke detector

The invention provides a labyrinth of a vertical multi-optical-path bidirectional scattering smoke detector, and the labyrinth includes a labyrinth measuring cavity and the two groups of transmittingtubes and receiving tubes arranged in the labyrinth measuring cavity, the included angle between the optical axis of the first transmitting tube and the optical axis of the first receiving tube is thesame as that between the optical axis of the second transmitting tube and the optical axis of the first receiving tube and the included angles are obtuse angles, so that each of the first transmitting tube and the second transmitting tube forms a forward optical path with the first receiving tube; the included angle between the optical axis of the first transmitting tube and the optical axis of the second receiving tube is the same as that between the optical axis of the second transmitting tube and the optical axis of the second receiving tube and the included angles are acute angles, so that each of the first transm