NOZZLE ASSEMBLY AND METHOD OF CONTROLLING THE SAME
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United States of America Patent
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app pub date -
Sep 8, 2016
filing date -
Sep 10, 2015
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Abstract
A nozzle assembly including water and gas supply units, a jet pipe having a nozzle for spraying water and/or gas, and a supply pipeline. The supply pipeline includes a first end fluidly connected with the nozzle and a second end fluidly connected with the water and gas supply units. The water supply unit has an open state, in which water is supplied to the supply pipeline, and a closed state. The gas supply unit has an open state, in which a gas is supplied to the supply pipeline, and a closed state. After the water supply unit is switched from the open state to the closed state, the gas supply unit is automatically switched from the closed state to the open state and is maintained in the open state for a preset time, after which the gas supply unit is switched to the closed state.
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