Condensing combustion apparatus

Patent metadata

Field	Value
Publication number	US-10823455-B2
Application number	US-201616060717-A
Country	US
Kind code	B2
Filing date	Nov 15, 2016
Priority date	Dec 8, 2015
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

A condensing combustion apparatus comprising: an upward combustion burner (20); a sensible-heat exchanger (40) which absorbs sensible combustion heat generated by the burner (20); and a latent-heat exchanger (50) which absorbs latent heat of steam included in a combustion gas which has passed the sensible-heat exchanger (40), wherein the sensible-heat exchanger (40) and the latent-heat exchanger (50) have the same lateral widths and are configured as fin-tube heat exchangers having common structures, and wherein a flow path through which the combustion gas, which has passed the sensible-heat exchanger (40), flows upward is formed on one side portion of the latent-heat exchanger (50), a flow path through which the combustion gas, which has passed the one side portion of the latent-heat exchanger (50), flows downward corresponding to a direction in which condensed water falls is formed on a middle portion of the latent-heat exchanger (50), and a flow path through which the combustion gas, which has passed the middle portion of the latent-heat exchanger (50), flows upward and discharges is formed on another side portion of the latent-heat exchanger (50).

First claim

The invention claimed is:

1. A condensing combustion apparatus comprising:
an upward combustion burner ( 20 );
a sensible-heat exchanger ( 40 ) which absorbs sensible combustion heat generated by the burner ( 20 ); and
a latent-heat exchanger ( 50 ) which absorbs latent heat of steam included in a combustion gas which has passed the sensible-heat exchanger ( 40 ),
wherein the sensible-heat exchanger ( 40 ) and the latent-heat exchanger ( 50 ) have the same lateral widths and are configured as fin-tube heat exchangers having common structures, and
wherein a flow path through which the combustion gas, which has passed the sensible-heat exchanger ( 40 ), flows upward is formed on one side portion of the latent-heat exchanger ( 50 ), a flow path through which the combustion gas, which has passed the one side portion of the latent-heat exchanger ( 50 ), flows downward corresponding to a direction in which condensed water falls is formed on a middle portion of the latent-heat exchanger ( 50 ), and a flow path through which the combustion gas, which has passed the middle portion of the latent-heat exchanger ( 50 ), flows upward and is discharged, is formed on another side portion of the latent-heat exchanger ( 50 ),
wherein a plurality of flow path caps for switching a flow direction of a heat medium are provided at both side portions of the sensible-heat exchanger ( 40 ) and the latent-heat exchanger ( 50 ), and
wherein lateral widths of the sensible-heat exchanger ( 40 ) and the latent-heat exchanger ( 50 ) which include the plurality of flow path caps correspond to a lateral width of a case of a combustion chamber ( 30 ) in which the burner ( 20 ) is embedded.

2. The condensing combustion apparatus of claim 1 , wherein widths of both the side portions of the latent-heat exchanger ( 50 ) are formed to be smaller than a width of the middle portion of the latent-heat exchanger ( 50 ), and
wherein an interval between heat exchange fins arranged on the both side portions of the latent-heat exchanger ( 50 ) is formed to be greater than an interval between heat exchange fins arranged on the middle portion of the latent-heat exchanger ( 50 ).

3. The condensing combustion apparatus of claim 1 , wherein the sensible-heat exchanger ( 40 ) is formed of stainless steel (SUS) or copper (Cu), and
wherein the latent-heat exchanger ( 50 ) is formed of SUS.

4. The condensing combustion apparatus of claim 1 , wherein a width of a combustion gas flow path formed on the other side portion of the latent-heat exchanger ( 50 ) is formed to be equal to or smaller than a width of a combustion gas flow path formed on the one side portion of the latent-heat exchanger ( 50 ).

5. A condensing combustion apparatus comprising:
an upward combustion burner ( 20 );
a sensible-heat exchanger ( 40 ) which absorbs sensible combustion heat generated by the burner ( 20 ); and
a latent-heat exchanger ( 50 ) which absorbs latent heat of steam included in a combustion gas which has passed the sensible-heat exchanger ( 40 ),
wherein the sensible-heat exchanger ( 40 ) and the latent-heat exchanger ( 50 ) have the same lateral widths and are configured as fin-tube heat exchangers having common structures, and
wherein a flow path through which the combustion gas, which has passed the sensible-heat exchanger ( 40 ), flows upward is formed on one side portion of the latent-heat exchanger ( 50 ), a flow path through which the combustion gas, which has passed the one side portion of the latent-heat exchanger ( 50 ), flows downward corresponding to a direction in which condensed water falls is formed on a middle portion of the latent-heat exchanger ( 50 ), and a flow path through which the combustion gas, which has passed the middle portion of the latent-heat exchanger ( 50 ), flows upward and is discharged, is formed on another side portion of the latent-heat exchanger ( 50 ),
wherein a condensed water collector ( 70 ) for inducing condensed water to discharge is provided between the sensible-heat exchanger ( 40 ) and the latent-heat exchanger ( 50 ), and
wherein the condensed water collector ( 70 ) is slantly disposed between a top end of the other side of the sensible-heat exchanger ( 40 ) and a bottom end of the one side of the latent-heat exchanger ( 50 ) and induces the combustion gas, which passes the sensible-heat exchanger ( 40 ) and flows upward, to move toward the one side portion of the latent-heat exchanger ( 50 ),
wherein a vertically upward plate ( 74 ), which extends upward and is coupled to a tube ( 53 ) of the latent-heat exchanger ( 50 ) to prevent a lateral movement of the combustion gas between the middle portion and the one side portion of the latent-heat exchanger ( 50 ), is formed at the condensed water collector ( 70 ).

6. A condensing combustion apparatus comprising:
an upward combustion burner ( 20 );
a sensible-heat exchanger ( 40 ) which absorbs sensible combustion heat generated by the burner ( 20 ); and
a latent-heat exchanger ( 50 ) which absorbs latent heat of steam included in a combustion gas which has passed the sensible-heat exchanger ( 40 ),
wherein the sensible-heat exchanger ( 40 ) and the latent-heat exchanger ( 50 ) have the same lateral widths and are configured as fin-tube heat exchangers having common structures, and
wherein a flow path through which the combustion gas, which has passed the sensible-heat exchanger ( 40 ), flows upward is formed on one side portion of the latent-heat exchanger ( 50 ), a flow path through which the combustion gas, which has passed the one side portion of the latent-heat exchanger ( 50 ), flows downward corresponding to a direction in which condensed water falls is formed on a middle portion of the latent-heat exchanger ( 50 ), and a flow path through which the combustion gas, which has passed the middle portion of the latent-heat exchanger ( 50 ), flows upward and is discharged, is formed on another side portion of the latent-heat exchanger ( 50 ),
wherein a flow path guide member ( 80 ) for inducing the combustion gas, which passes the one side portion of the latent-heat exchanger ( 50 ) and flows upward, to move toward an area of the middle portion of the latent-heat exchanger ( 50 ) is provided at a top of the latent-heat exchanger ( 50 ),
an exhaust path ( 60 ) which comprises an upper cover ( 61 ) and a flue ( 62 ) is provided at the top of the latent-heat exchanger ( 50 ), and
wherein the flow path guide member ( 80 ) comprises a slant plate ( 81 ) slantly disposed between a top end of the other side of the middle portion of the latent-heat exchanger ( 50 ) and a bottom surface of the upper cover ( 61 ) and a fixing plate ( 82 ) integrally formed on the slant plate ( 81 ) and coupled to the bottom surface of the upper cover ( 61 ).

7. The condensing combustion apparatus of claim 6 , wherein an upwardly convex flow path switch space is formed among a top end of a heat exchange fin ( 55 ) included in the latent-heat exchanger ( 50 ), the upper cover ( 61 ), and the flow path guide member ( 80 ) to allow the combustion gas, which passes the one side portion of the latent-heat exchanger ( 50 ) and flows upward, to be distributed and flow toward the middle portion of the latent-heat exchanger ( 50 ).

8. The condensing combustion apparatus of claim 6 , wherein a vertically downward plate ( 83 ), which extends downward and is coupled to a tube ( 53 ) of the latent-heat exchanger ( 50 ) to prevent a lateral movement of the combustion gas between the middle portion and the other side portion of the latent-heat exchanger ( 50 ), is formed at the slant plate ( 81 ).

9. The condensing combustion apparatus of claim 6 , wherein the fixing plate ( 82 ) is coupled to a perimeter of an outer surface of the f

Assignees

• Kyungdong Navien Co Ltd

Inventors

• Park Jun Kyu
• Yu Jeong Gi

Classifications

• F24H9/139

  Continuous flow heaters · CPC title

• F24H9/0031

  with means for changing or adapting the path of the flue gas · CPC title

• F23L5/02

  Arrangements of fans or blowers · CPC title

• F24H8/006 Primary

  Means for removing condensate from the heater · CPC title

• F24H1/34

  with water chamber arranged adjacent to the combustion chamber or chambers, e.g. above or at side · CPC title