Passive stream regulating system applicable to heat exchangers

Abstract

A passive stream regulating system applicable to air-flue gas or water-flue gas heat exchangers, preferably natural gas balanced flue or natural flue home heaters and home boilers, which allows to attain non-over oxygenated stoichiometric mixture conditions. The system is included by small diameter tubes or other geometric systems formed by small channels, to produce a strong laminarization of the aerodynamic flow established within the venting tube, which are located in sections of the conduit or passage of incoming cold air to the combustion chamber of the exchanger or in sections of the conduit or passage of hot flue gases released to the environment.

1 . A passive venting regulating system applicable to heat exchangers, of the type comprising at least one conduit or passage of hot gases from the combustion chamber to the environment or having an air inlet conduit to the combustion chamber, characterized in that at least in one section of one of both conduits where said cold air conduit locates, a plurality of tubular elements of low diameter, real or hydraulic, is positioned in parallel, that strongly increase the aerodynamic losses and produce a strong laminarization of the aerodynamic flow circulating though the same. 
   
   
       2 . A passive stream regulating system applicable to air-flue gas heat exchangers according to  claim 1 , characterized in that said elements are plastic straws. 
   
   
       3 . A passive stream regulating system applicable to air-flue gas heat exchangers according to  claim 1 , characterized in that said plurality of tubular elements is located at three sections of the cold air conduit. 
   
   
       4 . A passive stream regulating system applicable to air-flue gas heat exchangers according to  claim 1 , characterized in that the tubular elements have a circular cross-section. 
   
   
       5 . A passive stream regulating system applicable to air-flue gas heat exchangers according to  claim 1 , characterized in that the tubular elements are made of aluminum. 
   
   
       6 . A passive stream regulating system applicable to air-flue gas heat exchangers according to  claim 1 , characterized in that the tubular elements are formed by a metallic tube repeatedly wounded over itself, to form between its parallel sides a narrow helical channel.