Helical tube EGR cooler

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United States of America Patent

PATENT NO 9964077
SERIAL NO

15434787

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Abstract

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A heat exchanger for transferring heat between two fluids consists of a shell surrounding at least two tube bundles attached at both ends to a tube header. Each of the tube bundles is constructed from a plurality of individual tubes that are twisted into identical helixes formed about a common helical axis. Because each individual tube is formed in the shape of a helix, rather than as a straight tube, thermal elongation of the individual tubes results in a considerably reduced axial force on the tube attachments and tube header. Use of multiple tube bundles wound with opposite twist direction improves spacing efficiency between tubes.

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Patent Owner(s)

Patent OwnerAddress
NEAL KENNIETHMESA AZ 85215

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cunningham, James Mesa, US 47 684
Neal, Eugene Phoenix, US 8 58
Neal, Kennieth Mesa, US 35 142
Wilderson, Eric Medford, US 6 39

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