Conductive structure of heat exchange pipe

Abstract

A conductive structure of the heat exchange pipe is provided for conducting heat generated by combustion inside a burner to the outside. The heat exchange pipe includes a receptacle and an insertion. The insertion is disposed in the receptacle. The insertion includes at least two petals, each of which includes a plurality of circular arc sections that extend toward a middle of the receptacle and each having an arc angle. The circular arc sections of the two petals form two symmetric, alternately disposed arrangements in the receptacle. The circular arc sections define a flue. As such, the insertion forms a flue baffle device.

I claim: 
     
         1 . A conductive structure of a heat exchange pipe, which is adapted to conduct heat generated through combustion inside a burner to the outside, the conductive structure of the heat exchange pipe comprising:
 a receptacle; and   an insertion, which is disposed in the receptacle, the insertion comprising at least two petals, the petals each comprising a plurality of circular arc sections, the circular arc sections extending toward a middle of the receptacle and each having an arc angle, the circular arc sections of the two petals forming two symmetric, alternately disposed arrangements in the receptacle, the circular arc sections defining a flue.   
     
     
         2 . The conductive structure of the heat exchange pipe according to  claim 1 , wherein the insertion is formed of two petals that are semicircular in shape. 
     
     
         3 . The conductive structure of the heat exchange pipe according to  claim 1 , wherein each of the circular arc sections of the petals has a different arc angle. 
     
     
         4 . The conductive structure of the heat exchange pipe according to  claim 1 , wherein the receptacle and the insertion form a combination of different materials. 
     
     
         5 . The conductive structure of the heat exchange pipe according to  claim 4 , wherein the receptacle comprises stainless steel and the insertion comprises a non-ferrous metal material. 
     
     
         6 . The conductive structure of the heat exchange pipe according to  claim 1 , wherein the petals of the insertion are separate from each other before being disposed in the receptacle and two opposing sides of the petals engage each other to form abutting engagement therebetween after the petals are disposed in the receptacle. 
     
     
         7 . The conductive structure of the heat exchange pipe according to  claim 1 , wherein the petals of the insertion are formed through extrusion to be in a connected arrangement that forms a unitary body so that after the insertion is folded, the insertion is receivable and mounted in the receptacle.