Header tubes for heat exchangers and the methods used for their

Details Header tubes for heat exchangers and the methods used for their Header tubes for heat exchangers and the methods used for their

1997-03-20

1999-03-16

Leo, Leonard R.

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

165153, 165173, 165175, 165906, F28F 902

Patent

active

058814566

ABSTRACT:
A header tube for heat exchangers with a tube segment having slots which are perpendicular to the tube axis and spaced in the longitudinal direction and separated by webs, into which hollow flat pipes can be inserted and joined to the contact surface of the respective slot. The webs each have a pair of stampings to strengthen the material on each side of each web and the webs are shaped largely flat such that the cross-section of the tube segment has a largely D-shaped profile. A method of manufacturing the header tubes is also presented.

REFERENCES:
patent: 4150556 (1979-04-01), Melnyk
patent: 4960169 (1990-10-01), Granetzke
patent: 5052480 (1991-10-01), Nakajima et al.
patent: 5297624 (1994-03-01), Haussmann et al.
patent: 5329990 (1994-07-01), Chigira
patent: 5417277 (1995-05-01), Le Gauyer
patent: 5586600 (1996-12-01), Cribari
patent: 5622220 (1997-04-01), Park et al.

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