Heat exchanger for condensing gas boiler

Patent metadata

Field	Value
Publication number	US-2016377320-A1
Application number	US-201615258486-A
Country	US
Kind code	A1
Filing date	Sep 7, 2016
Priority date	Mar 17, 2014
Publication date	Dec 29, 2016
Grant date	—

Abstract

A heat exchanger comprising a heat exchange unit in which heat is exchanged between combustion gas caused by a burner for combusting a mixture and first/second heating mediums, and heating medium flow channels through which the first/second heating mediums flow and a combustion gas flow channel through which the combustion gas flows are alternately formed adjacent to each other in spaces between a plurality of plates and a combustion gas discharge unit through which the combustion gas having passed through the heat exchange unit is discharged is provided.

First claim

1 . A heat exchanger comprising:
heat exchange units 1100 , 1200 , and 1300 configured to exchange heat between combustion gas generated at a burner 70 burning a mixture and first and second heating media, and in which a heating medium flow channel and a combustion gas flow channel are alternately formed to be adjacent to each other in each of spaces between a plurality of plates 110 , 120 , 210 , 220 , 310 , and 320 , wherein the first and second heating media flow through the heating medium flow channel, and the combustion gas flows through the combustion gas flow channel; and a combustion gas discharge unit 700 configured to discharge the combustion gas that passed the heat exchange units 1100 , 1200 , and 1300 , wherein the heat exchange units 1100 , 1200 , and 1300 are configured with a first heat exchange unit 1100 including a first heating medium sensible heat flow channel that is formed between a pair of plates facing each other so as to absorb sensible heat of the combustion gas to heat the first heating medium, a second heat exchange unit 1200 including a first heating medium latent heat flow channel that is formed between a pair of plates facing each other to be communicated with the first heating medium sensible heat flow channel of the first heat exchange unit 1100 so as to absorb latent heat of the combustion gas to heat the first heating medium, and a third heat exchange unit 1300 including a second heating medium flow channel that is formed between a pair of plates facing each other so as to absorb the latent heat of the combustion gas to heat the second heating medium, and wherein the first to third heat exchange units 1100 , 1200 , and 1300 are integrally formed by a pair of plates facing each other so as to form the heating medium flow channel inside the first to third heat exchange units 1100 , 1200 , and 1300 .

2 . The heat exchanger of claim 1 , wherein the first heat exchange unit 1100 , the second heat exchange unit 1200 , and the third heat exchange unit 1300 are sequentially provided along a flow direction of the combustion gas generated at the burner.

3 . The heat exchanger of claim 2 , wherein the plurality of plates 110 , 120 , 210 , 220 , 310 , and 320 are configured with a first end plate portion 100 configuring one side of the heat exchanger 1000 , a second end plate portion 300 configuring the other side of the heat exchanger 1000 , and a plurality of middle plate portions 200 provided between the first end plate portion 100 and the second end plate portion 300 , and the first heating medium sensible heat flow channel, the first heating medium latent heat flow channel, and the second heating medium flow channel are formed in each of inner spaces of the first end plate portion 100 , the middle plate portion 200 , and the second end plate portion 300 ,
wherein the first end plate portion 100 is configured with a first outer side plate 110 and a first inner side plate 120 which come into bonding contact with each other at edge circumferences thereof, the middle plate portion 200 is configured with a first middle plate 210 and a second middle plate 220 which come into bonding contact with each other at edge circumferences thereof, and the second end plate portion 300 is configured with a second inner side plate 310 and a second outer side plate 320 which come into bonding contact with each other at edge circumferences thereof, and
wherein a first heating medium sensible heat flow channel and a first heating medium latent heat flow channel of the second end plate portion 300 are communicated with each other, and are separated from the second heating medium flow channel.

4 . The heat exchanger of claim 3 , wherein the first heating medium is heating water supplied to a heating required zone, and flows in a heating water inlet hole 111 c formed at the first outer side plate 110 , sequentially passes heating water passing holes 121 c , 121 d , 211 c , 211 d , 221 c , 221 d , 311 c , and 311 d , which are formed at positions corresponding to the first inner side plate 120 , the first and second middle plates 210 and 220 , the second inner side plate 310 , and the heating water inlet hole 111 c , respectively, to be undergone heat exchange in the second heat exchange unit 1200 , and then a flow direction of the first heating medium is switched to an opposite direction by means of the second outer side plate 320 and the heating water of the switched flow direction is undergone heat exchange while passing a heating medium flow channel formed at the first heat exchange unit 1100 and then is discharged through a heating water outlet hole 111 d formed at the first outer side plate 110 , and the second heating medium is direct water for supplying hot water to a user, and flows in a direct water inlet hole 111 a formed at the first outer side plate 110 to sequentially pass direct water passing holes 121 a , 211 a , and 221 a , which are formed at positions corresponding to the first inner side plate 120 , the first and second middle plates 210 and 220 , the second inner side plate 310 , and the direct water passing hole 111 a , and then a flow direction of the second heating medium is switched to an opposite direction by means of the second outer side plate 320 and the direct water of the switched flow direction sequentially passes hot water passing holes 311 b , 221 b , 211 b , and 121 b , which are formed at the second inner side plate 310 , the second and first middle plates 220 and 210 , and the first inner side plate 120 , respectively, and then is discharged to a hot water supply heat exchange unit through a hot water outlet hole 111 b of the first outer side plate 110 formed at positions corresponding to the hot water passing holes 311 b , 221 b , 211 b , and 121 b.

5 . The heat exchanger of claim 4 , wherein a flow channel connecting portion 329 is formed at a position corresponding to a heating water passing hole 311 d of the second inner side plate 310 in a space between the second inner side plate 310 and the second outer side plate 320 , so as to connect a first heating medium sensible heat flow channel of the third heat exchange unit 1300 and a first heating medium latent heat flow channel of the second heat exchange unit 1200 to each other.

6 . The heat exchanger of claim 5 , wherein lower sensible heat flow channel protruding portions 322 , 312 , 222 , 212 , 122 , and 112 are horizontally formed at positions corresponding to the second outer side plate 320 , the second inner side plate 310 , the second middle plate 220 , the first middle plate 210 , the first inner side plate 120 , and the first outer side plate 110 , respectively, an end of an upper part of the flow channel connecting portion 329 is connected in a space between lower sensible heat flow channel protruding portions 322 and 312 of the second outer side plate 320 and the second inner side plate 310 , and the first heating medium having the switched flow direction by means of the lower sensible heat flow channel protruding portion 322 of the second outer side plate 320 flows in a space between lower sensible heat flow channel protruding portions 122 and 112 of the first inner side plate 120 and the first outer side plate 110 via a lower sensible heat flow channel that is a space between lower sensible heat flow channel protruding portions 222 and 212 of the second middle plate 220 and the first middle plate 210 .

7 . The heat exchanger of claim 6 , wherein occluded portions 312 a , 222 a , 212 a , and 122 a and through holes 312 b , 222 b , 212

Assignees

• Kyungdong Navien Co Ltd

Inventors

• Kim Young Mo

Classifications

• F24H1/48

  Water heaters for central heating incorporating heaters for domestic water · CPC title

• F28F3/046

  the deformations being linear, e.g. corrugations · CPC title

• F24H9/0015

  in water channels · CPC title

• F28D9/0093

  Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids · CPC title

• F24H1/52

  incorporating heat exchangers for domestic water (F24H1/50 takes precedence) · CPC title