PARTICLE DETECTION SENSOR, DUST SENSOR, SMOKE DETECTOR, AIR CLEANER, VENTILATOR AND AIR CONDITIONER

摘要

PROBLEM TO BE SOLVED: To provide a particle detection sensor capable of precisely detecting fine particles even on a heating system which generates an air flow using a heating device such as heater resistance.SOLUTION: A particle detection sensor 1 includes: a light projection element 10; and a light receiving element 20 for detecting particles contained in a gas by receiving scattered light from a light projection element 10 due to particles in a detection area DA with a light receiving element 20. The particle detection sensor 1 includes: a heating device 50 for heating the gas; and a reflector 40 that reflects scattered light and guides the scattered light to the light receiving element 20.