Heat exchanger

Abstract

A heat exchanger comprising a plurality of heat exchange plaques and plates stacked one by one to define coolant passage channels and hot passage channels to be cooled and configured to be crossed by a coolant fluid and by a hot fluid to be cooled. Each plaque is modular and comprises a first lateral plate configured to be positioned at the point where the hot fluid inlet opening and the coolant fluid outlet opening are located, and a second lateral plate configured to be positioned at the point where the coolant fluid inlet opening and the hot fluid inlet opening. Moreover, the lateral plates are connected to each other by respective connecting bars.

1 . A heat exchanger comprising:
 a plurality of heat exchange plaques and a plurality of plates stacked one by one on each other along a stacking direction to define, in the space comprised between two adjacent plaques coolant passage channels and hot passage channels to be cooled arranged perpendicularly to the stacking direction and configured to be crossed by a coolant fluid and by a hot fluid to be cooled, respectively,   wherein each plaque has a coolant fluid inlet opening, a coolant fluid outlet opening, a hot fluid inlet opening and a hot fluid outlet opening collimated with the respective openings of additional plaques to define coolant fluid inlet/outlet ducts of the and hot fluid inlet/outlet ducts for the fluids,   wherein the coolant fluid inlet/outlet ducts and the coolant fluid inlet openings and the coolant fluid outlet openings are in communication with the coolant passage channel,   the hot fluid inlet/outlet ducts and the hot fluid inlet openings and the coolant fluid outlet openings are in communication with the coolant passage channel,   each plate is modular and comprises:   a first lateral plate configured to be positioned at the point where the hot fluid inlet opening and the coolant fluid outlet opening are located,   a second lateral plate configured to be positioned at the point where the coolant fluid inlet opening and the hot fluid inlet opening are located, and   said lateral plates are connected to each other by means of respective connecting bars.   
     
     
         2 . The heat exchanger according to  claim 1 , wherein
 the first plate comprises an individual opening configured to be positioned coaxially to the respective coolant fluid outlet openings of the plaques for each coolant passage channel.   
     
     
         3 . The heat exchanger according to  claim 1 , wherein the second plate comprises an individual opening configured to be positioned coaxially to the respective coolant fluid inlet openings of the plaques for each coolant passage channel. 
     
     
         4 . The heat exchanger according to  claim 1 , wherein the first plate comprises an individual opening configured to be positioned coaxially to the respective hot fluid outlet openings of the plaques for each hot fluid passage channel. 
     
     
         5 . The heat exchanger according to  claim 1 , wherein the second plate comprises an individual opening configured to be positioned coaxially to the respective hot fluid inlet openings of the plaques for each hot fluid passage channel. 
     
     
         6 . The heat exchanger according to  claim 1 , wherein the first lateral plate substantially identical to the second lateral plate. 
     
     
         7 . The heat exchanger according to  claim 1 , wherein the inner sides of the bars and the inner sides of each lateral plate form a modular frame for the passage of fluids, each plate comprising a wire mesh housed inside the volume comprised between two plaques internally to said frame in order to create turbulence and facilitate the heat exchange in the channels. 
     
     
         8 . The heat exchanger according to  claim 1 , wherein each lateral plate comprises at least one housing to receive, by shape coupling, one of the ends of the connecting bars. 
     
     
         9 . The heat exchanger according to  claim 1 , wherein each lateral plate is shaped to obtain a shape similar to a spectacle frame. 
     
     
         10 . The heat exchanger according to  claim 1 , wherein each lateral plate made from an aluminum strip which is plated with low melting material.