Tank for vapour degreasing - has sump below partition wall with opening to vapour chamber and chilled coil to create inversion blanket

摘要

The degreaser comprises a housing containing a sump at an elevation below a partition wall in the housing. The partition wall has an opening which communicates the sump with a work receiving chamber above the wall, an upper condenser in the chamber for defining the upper limit of a vapour zone in the housing, a lower condenser in the sump for causing a vapour zone to collapse through the opening into the sump, and a discrete chilled coil in the chamber above the elevation of the upper condenser for creating an inversion blanket over the vapour. A vapour discharge port in a wall of the housing above the elevation of the chilled coil and below the upper lip of the housing is for discharge of vapours attracted to the walls of the housing by the chilled coil.