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US 2016/0258916 A1Published application
Gas processing device with noise dampening
AssigneeResearch Triangle Institute
InventorsCharles E. Rodes, J. Randall Newsome
Life of this patent
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Abstract
A gas processing device includes a sample inlet defining a gas flow path into a housing, and a pump and a noise dampening device disposed in the housing. The noise dampening device includes an inlet chamber, an outlet chamber, and an elastomeric membrane interposed between and fluidly isolating the inlet chamber and the outlet chamber. The inlet chamber is interposed between the sample inlet and the pump inlet, and the outlet chamber communicates with the pump outlet.
Claims21
A gas processing device, comprising:
- a housing;
- a sample inlet defining a gas flow path into the housing;
- a pump disposed in the housing and comprising a pump inlet and a pump outlet;
- and
- a noise dampening device disposed in the housing and comprising an inlet chamber, an outlet chamber, and an elastomeric membrane interposed between and fluidly isolating the inlet chamber and the outlet chamber, wherein the inlet chamber is interposed between the sample inlet and the pump inlet, and the outlet chamber communicates with the pump outlet.
2 more elements
A method for monitoring aerosol, the method comprising:
- operating a pump to establish a flow of aerosol into a housing and to a collection filter disposed in the housing, wherein aerosol particles of a desired size range are collected on the collection filter and gas from the aerosol flows through the collection filter;
- flowing the gas from an outlet side of the collection filter, through an inlet chamber, and into an inlet of the pump;
- and
- flowing the gas from an outlet of the pump, through an outlet chamber, and through an exhaust port open to a region outside the outlet chamber, wherein the outlet chamber is adjacent to the inlet chamber and an elastomeric membrane is interposed between and fluidly isolates the inlet chamber and the outlet chamber,
- wherein the gas flowing through the inlet chamber contacts a first side of the elastomeric membrane, and the gas flowing through the outlet chamber simultaneously contacts a second side of the elastomeric membrane, and noise associated with the respective flows of the gas through the inlet chamber and the outlet chamber is reduced.
2 more elements
Dependencies are inferred from the claim text.