Heat exchanger

Abstract

An object is to provide a heat exchanger including a resonance-prevention baffle plate disposed between a plurality of heat transfer tubes, the resonance-prevention baffle plate being obtainable and mountable readily and at lower cost. A heat exchanger 10 disposed in a flow passage of combustion gas of a boiler or the like includes: a plurality of heat transfer tubes 14 disposed in parallel and spaced from one another, an axial direction of each heat transfer tube intersecting with the combustion gas g, inside a duct wall 12 forming the flow passage of the combustion gas g; and a resonance-prevention baffle 16 having a plate shape and disposed along the combustion gas g and between the heat transfer tubes 14 , the resonance-prevention baffle including a metal foil sheet 18.

1 . A heat exchanger, comprising:
 a plurality of heat transfer tubes disposed in parallel and spaced from one another, an axial direction of each heat transfer tube intersecting with a flow passage of a heat-exchange target fluid;   a resonance-prevention baffle having a plate shape and disposed along a flow direction of the heat-exchange target fluid and between the plurality of heat transfer tubes, the resonance-prevention baffle comprising a metal foil sheet; and   a rigid frame member fixed to an outer peripheral portion of the metal foil sheet.   
     
     
         2 . (canceled) 
     
     
         3 . The heat exchanger according to  claim 1 ,
 wherein the resonance-prevention baffle is fixed to at least a part of the plurality of heat transfer tubes by a fixing member.   
     
     
         4 . The heat exchanger according to  claim 3 ,
 wherein the fixing member comprises a U-shape bolt disposed so as to surround the heat transfer tube and screwed to the resonance-prevention baffle at opposite ends.   
     
     
         5 . The heat exchanger according to  claim 1 ,
 wherein the plurality of heat transfer tubes is disposed linearly along the flow direction of the heat-exchange target fluid, and   wherein the resonance-prevention baffle is formed into a flat plate shape and disposed along the flow direction of the heat-exchange target fluid.