Patent ID: 8869879
Filing Date: 2014-10-28
Classification: B01D,F28D,F28F,Y10T

Abstract:
1. A pipe/filler unit comprising: a pipe where heat is exchanged between an inside and an outside of a pipe wall; an inside regular filler layer disposed inside the pipe so as to abut an inner peripheral surface of the pipe, and an outside regular filler layer disposed outside the pipe so as to surround the pipe and closely contact an outer peripheral surface of the pipe wherein the outside regular filler layer is formed from a plurality of split tubular regular fillers which is split into a plurality of pieces in a peripheral direction, the plurality of split tubular regular fillers has a tubular structure disposed so as to cover an outer peripheral surface of the pipe, and the outside regular filler layer that is the tubular structure formed of the plurality of split tubular regular fillers is fastened by a fastening member so as to closely contact the outer peripheral surface of the pipe, and the outer peripheral surface of the pipe is subjected to close contact-promoting processing for promoting the close contact feature between the outer peripheral surface and the outside regular filler layer by winding a wire rod whose diameter is 2 to 5 mm around the outer peripheral surface of the pipe.