B - Operations – Transporting – 08 – B
Patent
B - Operations, Transporting
08
B
98/42
B08B 15/02 (2006.01) F24F 7/06 (2006.01) F24F 9/00 (2006.01)
Patent
CA 1045441
IMPROVED EXHAUST SYSTEM FOR INDUSTRIAL PROCESSES Abstract of the Disclosure A textile or other industrial machine, of the type where one or a plurality of operations generate a gaseous dis- charge at a work station, is provided with at least one wall leaving at least one open side and includes an exhaust hood on the top which communicates with the air space above the work station. A first fan communicates with the exhaust hood to withdraw smoke, fumes, vapors and steam from the air space and deliver it to the outside. A second fan draws in fresh, un- conditioned outside air and delivers it to a delivery nozzle extending along the front edge of a work table in said work station. An air curtain is thus formed between the delivery nozzle and the aforementioned exhaust hood, whereby the smoke, fumes, vapors and steam are confined within the air space above the work table until withdrawn through the exhaust hood. Further the delivery nozzle provides a source of fresh air to replace the air withdrawn so that the conditioned air in the workroom surrounding the textile machine is substantially unaffected. In a preferred embodiment, a portion of the exhausted air is recirculated through the air space above the work table prior to being treated by some type of cleaning apparatus, so that the volume of air per unit time passing through the cleaning operation is reduced. Further the amount of outside air drawn into the system is kept to a minimum to prevent air turbulence in the air curtain and rapid temperature changes in and around the work table, which might lead to a fogging problem.
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