| 摘要 |
An improvement in a steam powered pressing iron, in which steam is supplied by a boiler through a steam intake hose, to a steam connection 4. The steam collects in a steam chamber inside a body 5, and heats the iron. A lever 8 is depressed by a thumbpad 9 to actuate a steam discharge valve 10. The steam discharge valve 10 discharges the steam, under its steam pressure through a plenum to vents 12 (fig. 2) in a bottom 14 of the iron 2, applying steam to a garment being pressed. The improvement includes a steam trap valve 36. The steam trap valve discharges condensate to a discharge return connector 38, through the return hose to the boiler. The steam trap valve 36 is a thermodynamic steam trap, for preventing the flow of hot steam back to the boiler. But when in contact with cold condensate, the steam trap valve 36 automatically permits the flow of condensate through valve 36, out return connector 38, through the return hose, to the boiler. No manual valve turning is needed to open valve 36; and the cold condensate is automatically purged from the iron without operator intervention.
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