Heat exchanger

Patent metadata

Field	Value
Publication number	US-10480870-B2
Application number	US-201615752122-A
Country	US
Kind code	B2
Filing date	Aug 11, 2016
Priority date	Aug 28, 2015
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

A heat exchanger according to the present invention comprises a heat exchange portion in which heating water flow paths where heating water flows through a space between a plurality of plates, hot water flow paths through which hot water flows, and combustion gas flow paths are adjacently and alternatingly formed, wherein the heat exchange portion comprises: a heating sensible heat portion, which surrounds the outside of a combustion chamber and comprises an area on one side of the plates, for heating the heating water using the sensible heat of the combustion gas generated by combustion of the burner; a heating latent heat portion, which comprises a partial area on the other side of the plates, for heating the heating water using the latent heat of water vapors in the combustion gas which has completed heat exchanging in the heating sensible heat portion; and a hot water latent heat portion, which comprises the remaining area on the other side of the plates, for heating direct water using the latent heat of water vapors in the combustion gas which has passed through the heating latent heat portion.

First claim

The invention claimed is:

1. A heat exchanger comprising:
a heat exchange portion ( 200 ) in which a heating water flow path through which heating water flows, a hot water flow path through which hot water flows, and a combustion gas flow path through which a combustion gas combusted in a burner ( 100 ) flows are alternately formed to be adjacent to each other in a space between a plurality of plates,
wherein the heat exchange portion ( 200 ) is configured with a heating sensible heat portion ( 200 A) configured to surround an outer side of a combustion chamber (C), configured with an area at one side of a plate, and configured to heat the heating water using sensible heat of the combustion gas generated by the combustion in the burner ( 100 ); a heating latent heat portion ( 200 B) configured with a partial area at the other side of the plate and configured to heat the heating water using latent heat of water vapor contained in the combustion gas which underwent heat exchange in the heating sensible heat portion ( 200 A); and a hot water latent heat portion ( 200 C) configured with the remaining area of the other side of the plate and configured to heat direct water using latent heat of water vapor contained in the combustion gas passing through the heating latent heat portion ( 200 B).

2. The heat exchanger of claim 1 , wherein:
a connection passage for the heating water is formed between the heating sensible heat portion ( 200 A) and the heating latent heat portion ( 200 B),
the plurality of plates have an upright structure such that the heating sensible heat portion ( 200 A) is disposed at a top part of the upright structure, and the heating latent heat portion ( 200 B) and the hot water latent heat portion ( 200 C) are disposed at a bottom part of the upright structure, and
the burner ( 100 ) is a cylindrical burner and is inserted into a space of the combustion chamber (C) in a horizontal direction from a front surface thereof to be assembled.

3. The heat exchanger of claim 1 , wherein the plate constituting the heating sensible heat portion ( 200 A) is configured such that a width of a side area of the plate facing the heating latent heat portion ( 200 A) is formed to be greater than that of an area of the plate opposite the heating latent heat portion ( 200 A).

4. The heat exchanger of claim 1 , wherein:
a connection passage for the heating water is formed between the heating sensible heat portion ( 200 A) and the heating latent heat portion ( 200 B),
the heating latent heat portion ( 200 B) includes a heating water inlet ( 201 ) into which the heating water flows, and a plurality of heating latent heat portion heating water flow paths (P 1 ) formed between the plurality of plates and communicating with the heating water inlet ( 201 ) in parallel thereto, and
the heating sensible heat portion ( 200 A) includes a heating water outlet ( 202 ) through which the heating water is discharged, and a plurality of heating sensible heat portion heating water flow paths (P 3 ) formed between the plurality of plates and connected in series between the heating latent heat portion heating water flow path (P 1 ) and the heating water outlet ( 202 ).

5. The heat exchanger of claim 4 , wherein the hot water latent heat portion ( 200 C) includes a direct water inlet ( 203 ) into which direct water flows; a hot water outlet ( 204 ) formed in a diagonal direction to the direct water inlet ( 203 ) and through which the heating water is discharged; and a plurality of hot water latent heat portion hot water flow paths (P 5 ) provided between the plurality of plates and communicating with the direct water inlet ( 203 ) and the hot water outlet ( 204 ) in parallel thereto.

6. The heat exchanger of claim 4 , wherein:
a heating sensible heat portion combustion gas flow path (P 4 ) is provided between the heating sensible heat portion heating water flow paths (P 3 ),
a heating latent heat portion combustion gas flow path (P 2 ) communicating with the heating sensible heat portion combustion gas flow path (P 4 ) is provided between the heating latent heat portion heating water flow paths (P 1 ), and
a hot water latent heat portion combustion gas flow path (P 6 ) communicating with the heating latent heat portion combustion gas flow path (P 2 ) is provided between the hot water latent heat portion hot water flow paths (P 5 ).

7. The heat exchanger of claim 4 , wherein:
through-holes (H 1 ) and (H 5 ) provided at one side of the heating latent heat portion ( 200 B) and through-holes (H 2 ) and (H 6 ) provided at the other side thereof, which communicate with the heating latent heat portion heating water flow paths (P 1 ), are diagonally formed at the heating latent heat portion ( 200 B) to connect the heating latent heat portion heating water flow paths (P 1 ) in parallel, and
through-holes (H 3 ) and (H 7 ) provided at one side of the heating sensible heat portion ( 200 A) and through-holes (H 4 ) and (H 8 ) provided at the other side thereof, which communicate with the heating sensible heat portion heating water flow paths (P 3 ), are diagonally formed at the heating sensible heat portion ( 200 A) to connect the heating sensible heat portion heating water flow paths (P 3 ) in series.

8. The heat exchanger of claim 7 , wherein:
heating water flowing into the heating sensible heat portion heating water flow path (P 3 ) through the through-holes (H 3 ) and (H 7 ) provided at the one side branches off in both directions and flows toward the through-holes (H 4 ) and (H 8 ) formed at the other side in a diagonal direction, and
heating water flowing into the heating sensible heat portion heating water flow path (P 3 ) through the through-holes (H 4 ) and (H 8 ) branches off in both directions and flows toward the through-holes (H 3 ) and (H 7 ) formed at the one side in the diagonal direction.

9. The heat exchanger of claim 8 , wherein first blocked portions (H 3 ′) and (H 7 ′) configured to guide a heating medium, which flows into the heating sensible heat portion heating water flow path (P 3 ) through the through-holes (H 3 ) and (H 7 ) provided at the one side, to flow toward the through-holes (H 4 ) and (H 8 ) formed at the other side in the diagonal direction, and second blocked portions (H 4 ′) and (H 8 ′) configured to guide a heating medium, which flows into the heating sensible heat portion heating water flow path (P 3 ) through the through-holes (H 4 ) and (H 8 ) provided at the other side, to flow toward the through-holes (H 3 ) and (H 7 ) formed at the one side in the diagonal direction are formed at the heating sensible heat portion ( 200 A).

10. The heat exchanger of claim 7 , wherein:
first flanges (H 3 - 1 ) and (H 4 - 1 ) are respectively formed at the through-holes (H 3 ) and (H 4 ) to protrude toward the combustion gas flow path, and
second flanges (H 7 - 1 ) and (H 8 - 1 ) are respectively formed at the through-holes (H 7 ) and (H 8 ) to protrude toward the combustion gas flow path and in contact with ends of the first flanges (H 3 - 1 ) and (H 4 - 1 ).

11. The heat exchanger of claim 1 , wherein guide portions ( 221 ) and ( 261 ) configured to guide the heating water to flow toward a center of the combustion chamber (C) are formed at a heating water flow path of the heating sensible heat portion ( 200 A).

12. The heat exchanger of claim 1 , wherein:
a flange is formed to be bent at an edge of each of the plurality of plates, and
a combustion gas pass-through portion (D) through which the combustion gas flowing in the combustion gas flow path passes is formed at some area of edges of the plurality of plates in a state in which flanges of adjacent plates overlap with each o

Assignees

• Kyungdong Navien Co Ltd

Inventors

• Jeong Inchul

Classifications

• F28D21/0007

  Water heaters · CPC title

• F24H9/146

  Connecting elements of a heat exchanger · CPC title

• F28D9/0043

  the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another · CPC title

• F24D3/08

  in combination with systems for domestic hot-water supply · CPC title

• F28F3/086

  having one or more openings therein forming tubular heat-exchange passages · CPC title