Heat exchanger clean-out plug assembly
AssigneeBurnham Services, Inc.
InventorsMichael Sharkozy, Everett James, Donald Zimmerman, Albert Wajda, Gerald Rausch, Joseph Leszek
Life of this patent
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Abstract
A flue-gas to air heat exchanger having a flue-gas containing shell with a heat exchange surface, flue-gas inlet and outlet sections, and at least one tubular clean-out fitting is provided with a removable plug having an outer peripheral portion resiliently engageable with a section of the inner peripheral portion of the fitting adjacent the shell. The plug periphery is expanded into gas-tight sealing contact with the fitting inner periphery by means affording installation and removal without tools.
Claims7
In a flue-gas to air heat exchanger having a flue-gas containing shell with a heat exchange surface, said shell having flue-gas inlet and outlet sections and at least one tubular clean-out fitting having an inner peripheral portion of a predetermined length extending away from said shell to afford access to the interior of the shell for cleaning the shell interior, the improvement comprising:
- a removable plug having an outer peripheral portion resiliently engageable with a section of the inner peripheral portion of said fitting adjacent said shell, and
- means for expanding said plug section into gas-tight sealing contact with said fitting inner periphery.
Dependencies are inferred from the claim text.