US2006201451A1PendingUtilityA1

Pipe in a fire tube boiler

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Assignee: UNICAL AG SPAPriority: Jul 13, 2004Filed: May 15, 2006Published: Sep 14, 2006
Est. expiryJul 13, 2024(expired)· nominal 20-yr term from priority
Inventors:Giovanni Jahier
F24H 9/0026F28F 1/40F24H 1/40F22B 37/06
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PatentIndex Score
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Claims

Abstract

A pipe in a fire tube boiler, designed to convey the combustion gases and to be struck at its outer surface by the water to be heated, comprising a wall which has a constant thickness along its entire length and a plurality of fins which protrude monolithically from at least one arc-like support, which is associated in contact with the internal surface of the wall.

Claims

exact text as granted — not AI-modified
1 . A pipe in a fire tube boiler, designed to convey the combustion gases and to be struck at its outer surface by the water to be heated, comprising a wall which has a constant thickness along its entire length and a plurality of fins which protrude monolithically from at least one arc-like support, which is associated in contact with the internal surface of said wall.  
   
   
       2 . The pipe according to  claim 1 , wherein the fins protrude monolithically from two arc-like sectors associated in contact with the internal surface of said wall.  
   
   
       3 . The pipe according to  claim 1 , wherein the fins protrude from three arc-like sectors associated in contact with the internal surface of said wall.  
   
   
       4 . The pipe according to  claim 1 , wherein the fins protrude from four arc-like sectors associated in contact with the internal surface of said wall.

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