Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Waste gas purifier
Patent
1995-07-05
1997-03-18
Bhat, Nina
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Waste gas purifier
422172, 422176, 422177, 60299, 60304, 60305, 60322, 55309, 55338, 55DIG30, B01D 5000, F01N 310
Patent
active
056120060
ABSTRACT:
An assembly combining a catalytic converter with a spiral muffler, particularly for small internal combustion engines. In series are an expansion chamber, a venturi for air injection, a catalytic converter, and a phase-spreading spiral muffler. The expansion chamber promotes proper operation of the venturi, as well as reducing engine exhaust back pressure and providing some noise reduction. The muffler has a spirally coiled exhaust channel dead-ended at its inner extremity, with an outer extremity serving as a muffled exhaust outlet. A distribution chamber is adjacent the spiral exhaust channel, sharing a common wall therewith, and a plurality of streamlined slotted openings spaced along the exhaust channel at different distances from the muffled exhaust outlet introduce gas from the distribution chamber into the spiral channel. Disclosed is a space efficient construction including a series-connected venturi and catalytic converter assembly mounted centrally and coaxially within a cylindrical expansion chamber, with elements of the muffler arranged coaxially around a projecting portion of the catalytic converter.
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