Fluid agitating fin, method of fabricating the same and heat exchanger tube and heat exchanger or heat exchanging type gas cooling apparatus inwardly mounted with the fin

Abstract

A fluid agitating plate fin is mounted to a heat exchanger tube to agitate a cooling fluid and to create a turbulent flow. Edges of the plate fins are opposed to each other and the opposed butted blade edges cross each other.

1 . A fluid agitating plate fin mounted to inside or outside of a heat exchanger tube for making a fluid comprising a cooled medium or a cooling medium flowing at the inside or the outside of the heat exchanger tube bring about an agitating operation of a turbulent flow or a vortex flow, wherein blade edges of the plate fins are butted to be opposed to each other upward and downward and the respective butted blade edges are mounted to the inside or the outside of the heat exchanger tube to cross each other.  
   
   
       2 . The fluid agitating plate fin according to  claim 1 , wherein a thin plate constituting the plate material is a thin plate made of a metal.  
   
   
       3 . The fluid agitating plate fin according to  claim 1 , wherein the fluid agitating plate fins inwardly mounted into the heat exchanger tube to make the blade edges opposedly cross each other upward and downward are worked respectively individually upward and downward.  
   
   
       4 . The fluid agitating plate fin according to  claim 1 , wherein the fluid agitating plate fins inwardly mounted to the heat exchanger tube to make the blade edges opposedly cross each other upward and downward are respectively simultaneously worked upward and downward at the plate material and inwardly mounted thereto by folding a center portion of the plate material.  
   
   
       5 . The fluid agitating plate fin according to  claim 1 , wherein the fluid agitating plate fins inwardly mounted to the heat exchanger tube by making the blade edges opposedly cross each other upward and downward are inwardly mounted thereto by overlapping the blade edges with a face pressure therebetween or inwardly mounted thereto with an interval between the respective blade edges.  
   
   
       6 . The fluid agitating plate fin according to  claim 1 , wherein when portions of the plate fins for making the blade edges opposedly cross each other upward and downward are predicted, the portions of making the blade edges cross each other are previously formed with bonding portions of a notch, a recess and projection or the like, and the upward and the downward plate fins are integrally bonded by way of the bonding portions.  
   
   
       7 . The fluid agitating plate fin according to  claim 1 , wherein a shape of the blade edge of the plate fin may be a linear shape or a curved shape in a length direction and directions of crossing the plate fins may stay the same or may alternately be changed.  
   
   
       8 . The fluid agitating plate fin according to  claim 1 , wherein that the heat transfer tube inwardly mounted with the plate fin is a flat tube, a circular tube or other deformed tube.  
   
   
       9 . The fluid agitating plate fin according to  claim 1 , wherein that means for mounting the plate fin into the heat exchanger tube is pertinently selected from soldering, welding, adhering using an adhering agent and other bonding means.  
   
   
       10 . A method of fabricating a fluid agitating plate fin wherein a fluid agitating plate fin mounted to inside or outside of a heat exchanger tube for making a fluid comprising a cooled medium or a cooling medium flowing at the inside or the outside of the heat exchanger tube bring about an agitating operation of a turbulent flow or a vortex flow, wherein by forming a plurality of predetermined notched portions at a plate material comprising a thin plate and raising remaining notched portions of the notched portions orthogonally to a surface of the plate material, a plurality of plate fins are formed at the surface of the plate material.  
   
   
       11 . The method of fabricating a fluid agitating plate fin according to  claim 10 , wherein means for forming the notched portion at the plate material is any of a mechanical working method of pressing or the like or a chemical working method by etching or the like or an optical method of a laser beam or the like.  
   
   
       12 . A heat exchanger arranged with at least one piece of a heat exchanger tube mounted with a fluid agitating plate fin mounted to inside or outside of the heat exchanger tube for making a fluid comprising a cooled medium or a cooling medium flowing in the heat exchanger tube bring about an agitating operation of a turbulent flow or a vortex flow, wherein blade edges of the plate fins are butted to be opposed to each other upward and downward and the respective butted blade edges cross each other.  
   
   
       13 . A heat exchange type gas cooling apparatus constituted by being arranged with at least one piece or more of heat exchanger tubes which are intersected with a flow direction of a gas flowing in a gas pipe and in which a cooling medium flows and being mounted with a fluid agitating plate fin contiguous to an outer periphery of the heat exchanger tube, wherein the plate fins are mounted thereto such that blade edges of the plate fins are butted to be opposed to each other upward and downward and the respective butted blade edges cross each other.  
   
   
       14 . A heat exchanger tube constituted by being inwardly mounted with a fluid agitating plate fin for making a fluid comprising a cooled medium or a cooling medium flowing in a tube bring about an agitating operation of a turbulent flow or a vortex flow, wherein the fluid agitating plate fins are inwardly mounted thereto such that blade edges of the plate fins are butted to be opposed to each other upward and downward and the respective butted blade edges cross each other.