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Heat exchanger and production method for heat exchanger

  • US 10,215,497 B2
  • Filed: 12/03/2014
  • Issued: 02/26/2019
  • Est. Priority Date: 12/05/2013
  • Status: Active Grant
First Claim
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1. A heat exchanger that allows at least a first fluid and a second fluid circulating therein to exchange heat therebetween, the heat exchanger comprising a stacking block having therein a first flow path for the first fluid and a second flow path for the second fluid, wherein the stacking block comprises:

  • a first plate having a first plate first surface and a first plate second surface, a second plate having a second plate first surface and a second plate second surface, the first plate stacked on the second plate;

    the first plate formed with a plurality of first through holes having mutually identical shapes;

    the second plate formed with a plurality of second through holes having mutually identical shapes, the mutually identical shapes of the second through holes being identical to the mutually identical shapes of the first through holes;

    a first seal plate stacked on the first plate first surface; and

    a second seal plate stacked on the second plate second surface, wherein the first plate first surface faces away from the second plate and the second plate second surface faces away from the first plate, wherein in the first plate, the first through holes are mutually aligned and equally spaced in a first direction, wherein in the second plate, the second through holes are mutually aligned and equally spaced in the first direction, wherein each of the first through holes has regions overlapping with the second through holes on both sides of the first through hole in the first direction, and the first flow path is formed by the first through holes and the second through holes being alternately connected in the first direction in the regions where first and second holes overlap;

    wherein each of the first through holes consists of a first through hole one end part formed in the first plate second surface, a first through hole other end part formed in the first plate first surface, and a first through hole intermediate part which is a portion between the first through hole one end part and the first through hole other end part of the first through hole, wherein the first through hole other end part has a diameter smaller than the diameter of the first through hole one end part, wherein the first through hole intermediate part is formed so that the diameter thereof is not less than the diameter of the first through hole other end part and not more than the diameter of the first through hole one end part;

    wherein each of the second through holes consists of a second through hole one end part formed in the second plate first surface, a second through hole other end part formed in the second plate second surface, and a second through hole intermediate part which is a portion between the second through hole one end part and the second through hole other end part of the second through hole;

    wherein the second through hole other end part has a diameter smaller than the diameter of the second through hole one end part, and wherein the second through hole intermediate part is formed so that the diameter thereof is not less than the diameter of the second through hole other end part and not more than the diameter of the second through hole one end part.

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