Patent ID: 7717001

Claim:
A device for sampling and collecting particles from a gas stream, comprising: a. means for channeling a motive fluid and for separating a selected particle-containing portion of a gas stream and entraining the particle-containing portion into a motive fluid-particle mixture; b. a conduit to distribute the motive fluid-particle mixture into a selected collection element; c. means for cleaning to remove residue from within the means for channeling and the conduit, wherein the means for channeling and the means for cleaning comprise a Venturi-type eductor having a motive fluid inlet, a suction inlet, and an outlet; and d. a sweep fluid reservoir coupled to the suction inlet to deliver sweep fluid through the suction inlet to the outlet and a motive fluid reservoir coupled to the motive fluid inlet to deliver motive fluid through the motive fluid inlet to the outlet, forming suction within the suction inlet.