Heat exchanger

Patent metadata

Field	Value
Publication number	US-10690379-B2
Application number	US-201615752137-A
Country	US
Kind code	B2
Filing date	Aug 11, 2016
Priority date	Aug 28, 2015
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

A heat exchanger according to the present invention comprises a heat exchange portion in which heating medium flow paths, where a heating medium flows through a space between a plurality of plates, and combustion gas flow paths through which a combustion gas combusted in a burner flows are adjacently and alternatingly formed, wherein the heat exchange portion comprises a 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 medium using the sensible heat of the combustion gas generated by combustion of the burner, and a latent heat portion, which comprises an area on the other side of the plates, for heating the heating medium using the latent heat of water vapors in the combustion gas which has completed heat exchanging in the sensible heat portion, wherein a connection passage for the heating medium is formed between the sensible heat portion and the latent heat portion, the plates are formed in a vertical structure so that the sensible heat portion is positioned on the top part and the latent heat portion is positioned on the bottom part, and wherein the burner has a cylindrical shape and is assembled by being inserted laterally from the front surface of a space in the combustion chamber.

First claim

The invention claimed is:

1. A heat exchanger comprising:
a heat exchange portion ( 200 ) in which heating medium flow paths through which a heating medium flows in a space between a plurality of plates and combustion gas flow paths through which a combustion gas combusted in a burner ( 100 ) flows are alternately formed to be adjacent to each other,
wherein the heat exchange portion ( 200 ) is configured with a sensible heat portion ( 200 A) configured to surround an outer side of a combustion chamber (C), configured with an area at one side of each one of the plates, and configured to heat the heating medium using sensible heat of the combustion gas generated by the combustion in the burner ( 100 ); and a latent heat portion ( 200 B) configured with an area at the other side of each one of the plates and configured to heat the heating medium using latent heat of water vapor contained in the combustion gas which underwent heat exchange in the sensible heat portion ( 200 A), and
a connecting flow path of the heating medium is formed between the sensible heat portion ( 200 A) and the latent heat portion ( 200 B), each one of the plates has an upright structure such that the sensible heat portion ( 200 A) is disposed at a top part of each one of the plates and the latent heat portion ( 200 B) is disposed at a bottom part thereof, and the burner ( 100 ) is assembled by being inserted into a space of the combustion chamber (C) in a horizontal direction at a front surface thereof,
wherein:
through-holes (H 1 ) and (H 5 ) provided at one side of the latent heat portion ( 200 B) and through-holes (H 2 ) and (H 6 ) provided at the other side are diagonally formed at the latent heat portion ( 200 B), and
through-holes (H 3 ) and (H 7 ) provided at one side of the sensible heat portion ( 200 A) and through-holes (H 4 ) and (H 8 ) provided at the other side are diagonally formed at the sensible heat portion ( 200 A).

2. The heat exchanger of claim 1 , wherein the sensible heat portion ( 200 A) of each of the plates is formed such that a width (E 1 ) of a side area facing the latent heat portion ( 200 B) is formed to be larger than that (E 2 ) of an area opposite the latent heat portion ( 200 B).

3. The heat exchanger of claim 1 , wherein:
a plurality of plates are formed by stacking a plurality of unit plates each having a first plate and a second plate which are stacked,
the heating medium flow path is formed between the first plate and the second plate of the unit plate, and
the combustion gas flow path is formed between a second plate constituting a unit plate disposed at one side of adjacently stacked unit plates and a first plate of a unit plate disposed at the other side thereof.

4. The heat exchanger of claim 3 , wherein:
the first plate is configured with a first plane portion ( 210 ); a first protrusion ( 220 ) protruding from one side of the first plane portion ( 210 ) to a front side and having a first opening (A 1 ) formed at a center of the first protrusion ( 220 ) to constitute the sensible heat portion ( 200 A); and a second protrusion ( 230 ) protruding from the other side of the first plane portion ( 210 ) to the front side and configured to form the latent heat portion ( 200 B), and
the second plate is configured with a second plane portion ( 250 ); a first recess ( 260 ) recessed at one side of the second plane portion ( 250 ) toward the rear side, configured to form a sensible heat portion heating medium flow path (P 3 ) between the first protrusion ( 220 ) and the first recess ( 260 ), and having a second opening (A 2 ) corresponding to the first opening (A 1 ); and a second recess ( 270 ) recessed at the other side of the second plane portion ( 250 ) toward the rear side and configured to form a latent heat portion heating medium flow path (P 1 ) between the second protrusion ( 230 ) and the second recess ( 270 ).

5. The heat exchanger of claim 4 , wherein, when the first plate and the second plate are stacked, the first plane portion ( 210 ) and the second plane portion ( 250 ) are in contact with each other, and the second protrusion ( 230 ) and the second recess ( 270 ) are configured to be bent in opposite directions.

6. The heat exchanger of claim 4 , wherein:
a plurality of first gap maintaining portions ( 222 ) are formed at the first protrusion ( 220 ) to protrude toward the combustion gas flow path, and
a plurality of second gap maintaining portions ( 262 ) are formed at the first recess ( 260 ) at positions corresponding to the plurality of first gap maintaining portions ( 222 ) to protrude toward the combustion gas flow path.

7. The heat exchanger of claim 6 , wherein a protruding end of each of the plurality of first gap maintaining portions ( 222 ) and a protruding end of each of the plurality of second gap maintaining portions ( 262 ) are formed to be in contact with each other.

8. The heat exchanger of claim 1 , wherein:
the latent heat portion ( 200 B) is configured with a heating medium inlet ( 201 ) into which the heating medium flows; and a plurality of latent heat portion heating medium flow paths (P 1 ) formed between a plurality of plates and configured to communicate with the heating medium inlet ( 201 ) in parallel thereto, and
the sensible heat portion ( 200 A) is configured with a heating medium outlet ( 202 ) through which the heating medium flows; and a plurality of sensible heat portion heating medium flow paths (P 3 ) formed between the plurality of plates and connected in series between the plurality of latent heat portion heating medium flow paths (P 1 ) and the heating medium outlet ( 202 ).

9. The heat exchanger of claim 8 , wherein:
a sensible heat portion combustion gas flow path (P 4 ) is provided between the sensible heat portion heating medium flow paths (P 3 ), and
a latent heat portion combustion gas flow path (P 2 ) communicating with the sensible heat portion combustion gas flow path (P 4 ) is provided between the latent heat portion heating medium flow paths (P 1 ).

10. The heat exchanger of claim 8 , wherein:
the latent heat portion ( 200 B) is divided into a first latent heat portion ( 200 B- 1 ) and a second latent heat portion ( 200 B- 2 ) on both sides of a heating medium blocking portion ( 290 ),
the heating medium flow paths of the first latent heat portion ( 200 B- 1 ) and the second latent heat portion ( 200 B- 2 ) communicate through a heating medium connection flow path (P 1 ′) formed at one side of the heating medium blocking portion ( 290 ),
through-holes (H 1 ) and (H 5 ) communicating with the heating medium inlet ( 201 ) and the heating medium flow path of the first latent heat portion ( 200 B- 1 ) are formed at one side of the first latent heat portion ( 200 B- 1 ), and
through-holes (H 2 ) and (H 6 ) communicating with the heating medium flow path of the second latent heat portion ( 200 B- 2 ) and the sensible heat portion heating medium flow path (P 3 ) are formed at one side of the second latent heat portion ( 200 B- 2 ).

11. The heat exchanger of claim 1 , wherein:
a heating medium flowing into the sensible heat portion heating medium flow path (P 3 ) through the through-holes (H 3 ) and (H 7 ) provided at the one side branches off to flow towards the through-holes (H 4 ) and (H 8 ) formed at the other side in a diagonal direction, and
the heating medium flowing into the sensible heat portion heating medium flow path (P 3 ) through the through-holes (H 4 ) and (H 8 ) branches off to flow towards the through-holes (H 3 ) and (H 7 ) formed at the one side in the diagonal direction.

12. The heat exchanger of claim 11 , wherein:
first blocked portions (H 3 ′) and (H 7 ′) configured t

Assignees

• Kyungdong Navien Co Ltd

Inventors

• Jeong Inchul

Classifications

• Y02E60/14

  Thermal energy storage · CPC title

• Y02B30/00

  Energy efficient heating, ventilation or air conditioning [HVAC] · CPC title

• F24H1/445

  with integrated flue gas condenser · CPC title

• F24H1/32

  with vertical sections arranged side by side · CPC title

• F28D21/00

  Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00 · CPC title