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Plate heat exchanger, in particular for condensing boilers

  • US 10,458,679 B2
  • Filed: 11/20/2014
  • Issued: 10/29/2019
  • Est. Priority Date: 11/20/2013
  • Status: Active Grant
First Claim
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1. A heat exchanger for boilers comprising a set of heat exchange plates, wherein inside each plate circulates water to be heated while combustion products coming from a heating device pass outside in a gap between adjacent walls of two plates in a vertical direction;

  • each plate is provided with openings;

    said heat exchanger comprising;

    a plurality of closing elements coupled to the set of plates to close a portion of said openings;

    wherein each of said plates comprises at least three levels of respective channels housing the water to be heated, wherein the channels are arranged in a horizontal direction, perpendicular to the vertical direction of combustion products;

    wherein an upper level of the at least three levels is closest to the heating device and a lower level of the at least three levels is farthest from the heating device;

    said set of plates and said plurality of closing elements being combined such that the water flows through the set of plates in parallel in channels on the lower level, and such that the water flows through the set of plates at least partially in series in channels on the upper level.

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