Heat exchanger

Abstract

Heat exchanger comprising circulation elements fluidically connected to one or more manifolds which are configured to feed a heat-carrier fluid in the circulation elements and to collect the heat-carrier fluid at exit from the circulation elements.

1 . Heat exchanger comprising circulation elements fluidically connected to one or more manifolds which are closed at the ends by respective end caps and are configured to feed a heat-carrier fluid in said circulation elements and to collect said heat-carrier fluid at exit from said circulation elements, damping means operatively associated with at least one of said manifolds able to damp pressure waves which characterize the flow of heat-carrier fluid and modify their relative frequency and/or amplitude in order to prevent the occurrence of resonance phenomena, wherein said damping means are disposed in the proximity of one of said end caps. 
     
     
         2 . Heat exchanger as in  claim 1 , wherein said manifolds have a passage cross section for said heat-carrier fluid, said damping means comprise at least one distributor baffle disposed transversely inside at least one manifold, said distributor baffle having a plan shape defined by an external perimeter and at least partly mating with said passage cross section of said manifold. 
     
     
         3 . Heat exchanger as in  claim 2 , wherein said distributor baffle has a perimeter edge having a plan shape which partly differs from said passage cross section of said at least one manifold in which it is disposed, so as to define, in cooperation with said manifold, one or more passage gaps. 
     
     
         4 . Heat exchanger as in  claim 2 , wherein said distributor baffle comprises one or more through distribution holes. 
     
     
         5 . Heat exchanger as in  claim 4 , wherein said one or more through distribution holes have a variable cross section with respect to the thickness of said distributor baffle, having a longitudinal section with a conical or truncated-cone shape. 
     
     
         6 . Heat exchanger as in  claim 1 , wherein a single circulation element is disposed between at least one of said end caps and said distributor baffle. 
     
     
         7 . Heat exchanger as in  claim 1 , wherein said damping means comprise at least one phase shifter unit which comprises a phase shift chamber configured as a tubular body and fluidically connected to at least one manifold by means of a single pipe. 
     
     
         8 . Heat exchanger as in  claim 1 , wherein said damping means comprise at least one phase shifter unit which comprises a phase shift chamber configured as a tubular body and fluidically connected to at least one manifold by means of a first inlet pipe and a second outlet pipe. 
     
     
         9 . Heat exchanger as in  claim 7 , further comprising at least one feed pipe and at least one recovery pipe, wherein said feed pipe and said recovery pipe are fluidically connected to a first manifold comprising said distributor baffle, the heat exchanger further comprises a second manifold associated with a phase shifter unit. 
     
     
         10 . Heat exchanger as in  claim 1 , wherein said circulation elements comprise a plurality of channels whose passage cross section is comprised between about 5*10 −5  and about 20 square millimeters. 
     
     
         11 . Heat exchanger as in  claim 1 , wherein the damping means comprise one or more protrusions and/or one or more tubular elements associated with at least one of either: a dividing baffle disposed in said one or more manifolds, or end caps of said one or more manifolds, or walls of said manifolds. 
     
     
         12 . Heat exchanger as in  claim 1 , wherein said damping means comprise a mobile damper element comprising a body operatively associated with said manifold by means of elastic means configured to absorb said pulsations so as to capture the pressure pulsations transmitted in the heat-carrier fluid, and/or a flexible membrane, operatively associated with said manifold and configured to absorb vibrations which are transmitted in the heat-carrier fluid.