Cleaning and liquid contact with solids – Processes – Hollow work – internal surface treatment
Reexamination Certificate
2006-01-31
2006-01-31
Barr, Michael (Department: 1746)
Cleaning and liquid contact with solids
Processes
Hollow work, internal surface treatment
C134S022120, C134S022180, C134S024000, C134S104200, C134S186000
Reexamination Certificate
active
06990987
ABSTRACT:
Equipment and methods are provided for combining with a typical heat exchanger having numerous fin tubes, the combination allowing the containment of cleaning fluid used to clean fin tubes with high pressure liquid cleaning devices in which cleaning fluid is discharged into one end of each fin tube and out the other. An enclosure is attached to an opened end of a heat exchanger having U-shaped fin tubes, the enclosure having cleaning tool access portions for separately exposing each of at least two pluralities of the fin tubes entry ends, while continuing to cover the remaining fin tube pluralities, and the fin tube exit ends. Fluid splashed at the cleaning fluid entry end of the fin tubes and cleaning fluid exiting the fin tubes is captured and drained by the enclosure. Alternatively, a second enclosure captures exiting cleaning fluids in heat exchangers having straight fin tubes and two openable ends.
REFERENCES:
patent: 4551181 (1985-11-01), Stearman
patent: 5336331 (1994-08-01), Jenkins
patent: 5499639 (1996-03-01), Williams, Jr.
Barr Michael
Chaudhry Saeed
Gray George S.
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