APPARATUS AND METHOD FOR PARTICLE RADIATION BY FROZEN GAS PARTICLES
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United States of America Patent
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Issued Date -
Nov 4, 2010
app pub date -
Apr 14, 2008
filing date -
Apr 13, 2007
priority date (Note) -
Abandoned
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Abstract
The invention relates to a device for pressure blasting by means of a mixed jet made of particles of a frozen gas and a carrier gas, comprising a nozzle housing, which encloses an outer cavity and an inner cavity, wherein the inner cavity forms an expansion space, which comprises an inlet at its upstream longitudinal end for inducting a liquefied gas into the expansion space, and comprises an outlet opening at its downstream longitudinal end, wherein the outlet opening comprises a much larger cross section than the inlet, and wherein the outer cavity envelops the inner cavity at least partially in the portion of the outlet opening, at least one liquid gas supply, which is connected to the inlet of the expansion space, a support gas supply, which is connected with the outer cavity, and an acceleration nozzle having a nozzle outlet downstream of the outlet opening of the expansion space, the acceleration nozzle initially contracts in flow direction, wherein a carrier gas defined laterally from the outlet opening and has cross section which is variably adjustable.
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