Patent ID: 8727708

Claim:
An exhausting pump connected to a processing chamber of a substrate processing apparatus, and provided with at least one rotary blade, a rotary shaft from which the rotary blade is projected and a cylindrical intake part disposed at the processing chamber side from the rotary blade, comprising: only one reflecting device disposed inside said intake part; and a particle capturing mechanism that is disposed in the intake part and captures particles rebounded by the rotary blade, wherein said only one reflecting device is comprised of a first reflecting surface member which is opposed to the rotary blade and a second reflecting surface member which is disposed around a periphery of the first reflecting surface member and is inclined with respect to the first reflecting surface member, the first reflecting surface member and the second reflecting surface member respectively having reflecting surfaces, no gap is interposed between the first reflecting surface member and the second reflecting surface member, and a gap is interposed between the second reflecting surface member and an inner wall of said intake part, the gap existing along a whole circumference of the second reflecting surface member.