CN2377477Y - Heat exchanger assembly having condensed exhaust-heat heat-exchanger - Google Patents
Heat exchanger assembly having condensed exhaust-heat heat-exchanger Download PDFInfo
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- CN2377477Y CN2377477Y CN 98204955 CN98204955U CN2377477Y CN 2377477 Y CN2377477 Y CN 2377477Y CN 98204955 CN98204955 CN 98204955 CN 98204955 U CN98204955 U CN 98204955U CN 2377477 Y CN2377477 Y CN 2377477Y
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Abstract
The utility model relates to a heat exchanger assembly with a condensed waste heat exchanger, belonging to the field of a fast gas water heater. The utility model carries out the improvement mainly in the aspects of the order of the heat exchange of cold water and fume and the discharge of condensed water in the waste heat exchanger. The purpose is to design a fast gas water heater with a compact structure and high heat exchange efficiency. The conducted method of the utility model is that fins of the waste heat exchanger can form a definite included angle with the horizontal plane, and the condensed water can automatically flow into a condensed water receiving and discharging tank which is arranged aside along the included edge of the fins, and the condensed water can be discharged outside along wit the inclined trend. The improved water way is compact and smooth and is in conformity with the principle of countercurrent flow; the heat exchange efficiency of the water heater can be improved.
Description
The utility model is a kind of heat exchanger assembly that the condensing afterheat heat exchanger is arranged, and belongs to the gas instantaneous water heater field.
This Classification: the utility model patent relevant with this technology has: preheater bulletin CN2251692Y condensing gas-fired fast water heater on March 20th, 1996 bulletin on April 9th, 1997 of structure bulletin CN2147470Y heat exchanger for water heater on July 21st, 1993 bulletin on November 24th, the 1993 CN2222879Y domestic gas-fired water heater of laser heating in CN2136418Y energy-saving preheating device for gas water heater bulletin many hydronic gas heater inner bags of CN2141878Y on June 16th, 1993 bulletin on September 8th, 1993 CN2138766Y water heater
General gas fast water heater discharging flue-gas temperature height, GB GB6932-86 regulation is not less than 110 ℃, and heat loss is very big.In order to improve the thermal efficiency of general gas fast water heater, the way of utility model CN2136418Y and CN2222879Y is: with the afterheat heat exchanger of relatively independent (being split), place existing general gas fast water heater heat exchanger (below rename as heat exchanger No. a time) directly over.Heat exchanger, combustion chamber and a coil pipe in afterheat heat exchanger and the general gas fast water heater are formed heat exchanger assembly jointly.Its advantage is that existing general gas fast water heater need not changed, as long as afterheat heat exchanger is series at water heater water inlet upstream, thereby can match with user's straight-line general gas fast water heater easily.Shortcoming is: do not consider the discharging of condensed water in the design, and the afterheat heat exchanger horizontal positioned, the condensed water on the fin can drip on the combustor nozzle below the combustion chamber, influences the normal combustion of combustion gas; Secondly, (cold water is advanced into afterheat heat exchanger and is back to the water heater below then downwards earlier, enter the coil pipe water heater inner combustion chamber outside and a heat exchanger on the combustion chamber, is back to the water heater lower end at last once more downwards and sends.) cold water has twice up and down, it is longer that cold water does not have the heat exchange tube side, and the linear loss of hydraulic pressure is bigger; Adopt outside soft (firmly) pipe to be connected between afterheat heat exchanger and the straight-line general gas fast water heater, changed the succinct outward appearance of original water heater, and removable connection to be not so good as welded seal reliable.In addition, the afterheat heat exchanger fin heat exchange area of CN2222879Y is too little; And CN2136418Y's is excessive, and consumptive material is many.
Utility model CN2141878Y is characterized in that the heat-exchange tube that has some to run through the combustion chamber.Shortcoming is: heat-exchange tube is too near from burner, and temperature distributing disproportionation in the combustion chamber is unfavorable for the completing combustion of combustion gas; Heat-exchange tube is a light pipe, and the unit length heat exchange area is little; Do not consider the discharging of condensed water in the design.
Its heat exchange mode of utility model CN2138766Y is a countercurrent flow, and thinking is fine; But heat exchanger volume is big, and heat exchange area per unit volume is little, and space availability ratio is low; Water tank is too near from burner, is unfavorable for the completing combustion of combustion gas; And do not consider the emission problem of condensed water on its structure.
The afterheat heat exchanger fin heat exchange area of utility model CN2147470Y is moderate, and adopts and the identical version of heat exchanger can also reduce production costs.Its shortcoming is: do not consider the discharging of condensed water in the design; In addition, because cold water and flue gas following current heat exchange (be cold water--coil pipe--heat exchanger--afterheat heat exchanger--hot water) so heat exchange efficiency is lower.
Above in the listed utility model patent, have only utility model CN2251692Y partly to consider the discharging of condensed water, and condensate drain arranged at its afterheat heat exchanger.But with row's condensate draining place afterheat heat exchanger fin in the smoke-box under, this structure is given and is made and safeguard and bring many inconvenience; And the water in the condensate draining can produce double evaporation-cooling, reduces the heat exchange efficiency of afterheat heat exchanger; Cold water enters afterheat heat exchanger again after the coil pipe preheating, reduced the temperature difference of afterheat heat exchanger and flue gas, thereby has also reduced heat exchange efficiency.In addition, because condensate draining is relative one by one up and down with fin, the discharging of flue gas has certain requirement again to flow area, so each condensate draining must keep certain spacing.Because fin and condensate draining have same interval, so spacing of fin is bigger, the heat exchange area of afterheat heat exchanger unit volume is less, and heat exchange efficiency is lower.
The purpose of this utility model is: overcome the shortcoming of above-mentioned utility model, design a kind of efficient, succinct, reliable and practical heat exchanger assembly, improve the thermal efficiency of existing gas instantaneous water heater.
The purpose of this utility model can be realized by the multiple technologies scheme, see for details as follows:
Technical scheme one:
Be respectively two separate components as afterheat heat exchanger as described in practical novel C N2136418Y and the CN2222879Y and general gas fast water heater.Afterheat heat exchanger is positioned at the water heater top, and its water route is series at water heater water inlet upstream, adopts removable soft (or hard) pipe to connect between the two.A heat exchanger components of afterheat heat exchanger and water heater inside (comprising: heat exchanger, combustion chamber and a coil pipe) is formed heat exchanger assembly jointly.Afterheat heat exchanger is a vertical fins tubular construction form, and the fin plane is mutually suitable with the flow of flue gas direction.Cold water is introduced into afterheat heat exchanger, is back to water heater below then downwards, upwards enters the coil pipe water heater inner combustion chamber outside and a heat exchanger on the combustion chamber again, is back to the water heater lower end at last once more downwards and sends.
The improved place of this scheme is: afterheat heat exchanger adopts and the identical vertical fins snake bend structure of heat exchanger, and its fin and horizontal plane keep certain included angle, and fin is following to descend continuously.Between afterheat heat exchanger and a heat exchanger transition smoke-box is arranged; Smoke-box one side has one and the isometric side opening of smoke-box.Condensed water tank that runs in places below, minimum edge, fin inclined-plane, the smoke-box wall outside that reclines, and tilts towards an end.Condensate draining has an inclined-plane that is folded to smoke-box by the ledge of smoke-box one side.This inclined-plane passes transition smoke-box side opening, extends to the below at minimum edge, fin inclined-plane always.The condensed water that produces on the afterheat heat exchanger can flow to its low side along fin, splashes into the condensed water tank that runs in.This tank has certain gradient, so that condensed water is discharged at any time.
CN2251692Y compares with utility model, and the advantage of this scheme is: removed row's condensate draining of afterheat heat exchanger below, avoided the double evaporation-cooling of condensed water, simplified the afterheat heat exchanger structure; And can further reduce spacing of fin, improve heat exchange area per unit volume, thereby improve heat exchange efficiency.
The shortcoming of this scheme is: the condensed water of the high-end generation of afterheat heat exchanger fin need flow to the low side of fin and discharge, and promptly the condensed water flow process is long.In addition, fin two ends difference in height is bigger, the fin inequality of being heated, and the high-end side smoke-box radiating surface of fin is big, and outwards radiations heat energy is many.These shortcomings all reduce the heat exchange efficiency of fume afterheat.
Technical scheme two:
As scheme one described heat exchanger assembly, its improved place is that afterheat heat exchanger adopts the double inclined plane structure.The bottom that is fin is that middle high both sides are low, is descended continuously to minimum point by peak; All the bottom of fin forms a pointed double inclined plane.There is the condensed water of the pair of angled tank that runs in the below of its two low side; This tank two outsides that recline before and after the smoke-box are fixed.
The advantage of this scheme: inherited the advantage of scheme one, and improvement is arranged again: the condensed water flow process is short; The total radiating surface in smoke-box rear and front end reduces, and outwards radiations heat energy reduces; In addition, because symmetry before and after fin and the smoke-box, thereby improved the flue gas heat exchange condition to a certain extent.Above-mentioned advantage is all favourable to the heat exchange efficiency that improves afterheat heat exchanger.
The shortcoming of this scheme: snake type bend pipe equidistantly distributes, and is inconsistent with the flowing velocity distribution curve of flue gas in the smoke-box, fin and flue gas heat exchange inequality.
Technical scheme three:
As scheme two described heat exchanger assemblies, its improved place is: compression afterheat heat exchanger middle part coiled pipe spacing (the projection spacing of snake bend on horizontal plane is constant), making the coiled pipe spacing consistent with the flowing velocity distribution curve of flue gas in the transition smoke-box---transition is gradually dredged on promptly middle close both sides.The shape at fin middle part becomes slick and sly thereupon, forms ogive curve---and be the ogive curve that raise up of the bottom of fin for symmetry; All the bottom of fin forms the arched surface of a slyness.
The advantage of this scheme: inherited the advantage of scheme two, and improvement is arranged again: the flow of flue gas velocity distribution curve is approximate in the density of snake bend and the smoke-box coincide, and the fin heat exchange is more even.Favourable to the heat exchange efficiency that improves afterheat heat exchanger.
Technical scheme one, two, three has inherited that afterheat heat exchanger and a heat exchanger components are divided into excellent, the shortcoming that two bodies are brought among utility model CN2136418Y and the CN2222879Y:
Advantage: such scheme need not be changed existing general gas fast water heater, as long as afterheat heat exchanger is series at water heater water inlet upstream, thereby can match with user's water heater easily, helps promoting the use of of this power-saving technology.
Shortcoming: (cold water is introduced into afterheat heat exchanger and is back to the water heater below then, enters the coil pipe outside its combustion chamber, and a heat exchanger by the upper end, combustion chamber returns the water heater lower end at last once more and sends.) water route up and down twice, it is longer that cold water does not have heat exchange process, and the linear loss of hydraulic pressure is more.Adopt outside soft (firmly) pipe to be connected between afterheat heat exchanger and the water heater, changed original water heater succinct outward appearance, and removable connection to be not so good as welded seal reliable.
Technical scheme four, five, six:
As scheme one, two, three described heat exchanger assemblies, its improved place is: afterheat heat exchanger and a heat exchanger components are made an integral body.Cold water is introduced into afterheat heat exchanger, enters heat exchanger then No. one time, enters the coil pipe outside its combustion chamber at last, and sends from the water heater lower end.
The advantage of this scheme is: the advantage of having inherited scheme one, two, three respectively, and improvement is arranged again: heat exchanger assembly is as a whole, cold water and flue gas are easy to realize countercurrent flow, cold water from top to bottom, afterheat heat exchanger and flue gas heat exchange temperature difference maximum, whole heat exchanger assembly heat exchange efficiency is the highest.And because the water route is succinctly smooth, no heat exchange process is the shortest, so the linear loss of hydraulic pressure is also minimum.In addition, heat exchanger assembly is as a whole, and the each several part water route adopts gas welding to connect, and interface is tightly solid, thereby whole heat exchanger assembly is reliability and durability.
The advantage that the utility model is compared with prior art had: because afterheat heat exchanger fin lower edge keeps certain included angle continuously and with horizontal plane, its fin can not only heat exchange, but but also the water conservancy diversion condensed water, so structure is succinct especially, nature; Simultaneously owing to cancelled row's condensate draining of afterheat heat exchanger fin below, can significantly reduce the double evaporation-cooling of condensed water so on the one hand, reduce the afterheat heat exchanger spacing of fin, increase the heat exchange area of unit volume, thereby further improved the waste heat heat exchange efficiency; The reliability of whole heat exchanger assembly and durability have also obtained significant raising on the other hand.Make one when whole when afterheat heat exchanger and heat exchanger components, be easy to realize countercurrent flow, thereby can further improve the thermal efficiency of heat-exchanging component again.In addition, because heat exchange efficiency is very high, air consumption is less relatively, thereby can also suitably dwindle the size of combustion chamber, reduces the outside heat radiation in combustion chamber, improves the thermal efficiency.
Description of drawings:
Fig. 1: split type arched surface condensation afterheat heat exchanger assembly
Fig. 2: split type double inclined plane condensation afterheat heat exchanger assembly
Fig. 3: split type monocline face condensation afterheat heat exchanger assembly
Fig. 4: integral type arched surface condensation afterheat heat exchanger assembly
Fig. 5: integral type double inclined plane condensation afterheat heat exchanger assembly
Fig. 6: in the integral type monocline face condensation afterheat heat exchanger component drawings:
1。Afterheat heat exchanger 7.Monocline face heat exchanger fin 13.A heat exchanger
2。Pipe joint 8.Double inclined plane heat exchanger fin 14.The combustion chamber
3。Transition smoke-box 9.Arched surface heat exchanger fin 15.Coil pipe
4。The condensed water tank 10 that runs in.Connect soft (or hard) pipe 16.Aqueous vapor interlock interface
5。Snake bend 11.General gas fast water heater 17.The former water inlet of water heater
6。Transition smoke-box side opening 12.A heat exchanger component 18.Hot water outlet
The best embodiment of the utility model is split type or integral type arched surface condensation afterheat heat exchanger assembly (seeing Fig. 1, Fig. 4), but it is succinct in order to narrate, convenient, by one after the first split, easy first and difficult later be described in detail several embodiment of the present utility model by easy stages below in conjunction with accompanying drawing:
Embodiment one: see Fig. 3: split type monocline face condensation afterheat heat exchanger assembly (referring to Fig. 1)
Afterheat heat exchanger (1) is respectively two separate components with general gas fast water heater (11).Afterheat heat exchanger (1) is positioned at general gas fast water heater (11) top, adopts removable connection soft (or hard) pipe (10) to be connected with pipe joint (2) between the two.Afterheat heat exchanger (1) is formed heat exchanger assembly jointly with a heat exchanger components (12) (comprising: a heat exchanger (13), combustion chamber (14) and coil pipe (15)) of general gas fast water heater (11) inside.Afterheat heat exchanger (1) is a vertical fins snake bend structure, and the fin plane is mutually suitable with the flow of flue gas direction; Behind soft (or hard) pipe (10) of cold water and the pipe joint (2) by connecting, earlier by the snake bend (5) on the afterheat heat exchanger (1), soft by connecting downwards (or hard) manages (10) and pipe joint (2) then, be back to general gas fast water heater (11) below, by the former water inlet of water heater (17), aqueous vapor interlock interface (16), upwards enter the outer coil pipe (15) in water heater (11) inner combustion chamber (14) again, and a heat exchanger (13) of combustion chamber (14) upper end, be back to general gas fast water heater (11) lower end hot water outlet (18) at last once more downwards and send.
Afterheat heat exchanger (1) adopts the vertical fins snake bend version identical with a heat exchanger (13), and its monocline face heat exchanger fin (7) keeps certain included angle with horizontal plane, and fin is following to descend continuously.One transition smoke-box (3) is arranged between an afterheat heat exchanger (1) and the heat exchanger (13); Smoke-box (3) one sides have one and the isometric transition smoke-box side opening (6) of smoke-box (3).Condensed water tank (4) that runs in places below, minimum edge, fin inclined-plane, the smoke-box that reclines (3) the wall outside, and tilts towards an end.The condensed water tank (4) that runs in has an inclined-plane that is folded to smoke-box (3) by the ledge of smoke-box (3) one sides.This inclined-plane passes smoke-box side opening (6), extends to the below at minimum edge, fin inclined-plane always.The condensed water that afterheat heat exchanger (1) go up to produce can flow to its low side along fin, splashes into the condensed water tank (4) that runs in.This tank has certain gradient, so that condensed water is discharged at any time.
Embodiment two: see Fig. 2: split type double inclined plane condensation afterheat heat exchanger assembly (referring to Fig. 1)
As mode one described heat exchanger assembly, its improved place is that afterheat heat exchanger (1) adopts double inclined plane heat exchanger fin (8), and the bottom of fin (8) is that middle high both sides are low, is descended continuously to minimum point by peak; All the bottom of fin (8) forms a pointed double inclined plane.There is the condensed water of the pair of angled tank (4) that runs in the below of its two low side; This tank two outsides that recline before and after the transition smoke-box (3) are fixed.
Embodiment three: see Fig. 1: split type arched surface condensation afterheat heat exchanger assembly
As mode two described heat exchanger assemblies, its improved place is: the spacing (the projection spacing of snake bend on horizontal plane is constant) of compression afterheat heat exchanger (1) middle part snake bend (5),--transition is gradually dredged on----promptly middle close both sides to make snake bend (5) spacing consistent with the flowing velocity distribution curve of the interior flue gas of transition smoke-box (3).The shape at arched surface heat exchanger fin (9) middle part becomes slick and sly thereupon, forms ogive curve, and------is the ogive curve that raise up of the bottom of fin for symmetry: all the bottom of arched surface heat exchanger fin (9) forms the arched surface of a slyness.
Embodiment four, five, six: see Fig. 4, Fig. 5, Fig. 6 (referring to Fig. 1)
Fig. 4: integral type arched surface condensation afterheat heat exchanger assembly
Fig. 5: integral type double inclined plane condensation afterheat heat exchanger assembly
Fig. 6: integral type monocline face condensation afterheat heat exchanger assembly
As mode one, two, three described heat exchanger assemblies, its improved place is: cold water and flue gas adverse current heat exchange---be cold water is after aqueous vapor links interface (16), be introduced into the snake bend (5) on the afterheat heat exchanger (1), enter a heat exchanger (13) then, enter the outer coil pipe (15) in its combustion chamber (14) at last, and send from water heater lower end hot water outlet (18).Heat exchanger assembly is as a whole, and the each several part water route adopts gas welding to connect.
Claims (5)
1. heat exchanger assembly that the condensing afterheat heat exchanger is arranged, a heat exchanger components by afterheat heat exchanger and general gas fast water heater inside---comprising: a heat exchanger, combustion chamber and coil pipe, the common heat exchanger assembly of forming, afterheat heat exchanger and general gas fast water heater are respectively two separate components, afterheat heat exchanger is positioned at the water heater top, its water route is series at water heater water inlet upstream, adopt removable soft or hard tube connection between the two, afterheat heat exchanger is a vertical fins tubular construction form, the fin plane is mutually suitable with the flow of flue gas direction, cold water is introduced into afterheat heat exchanger, be back to the water heater below then downwards, upwards enter the coil pipe outside the water heater inner combustion chamber again, a heat exchanger with the upper end, combustion chamber is back to the water heater lower end at last once more downwards and sends, and it is characterized in that: afterheat heat exchanger (1) adopts the vertical fins snake bend structure identical with a heat exchanger (13), its fin and horizontal plane keep certain included angle, and fin is following to descend continuously.
2. heat exchanger assembly according to claim 1, it is characterized in that: a transition smoke-box (3) is arranged between an afterheat heat exchanger (1) and the heat exchanger (13), smoke-box one side has one and the isometric transition smoke-box side opening (6) of smoke-box, a condensed water runs in, and tank (4) places below, minimum edge, fin inclined-plane, the smoke-box wall outside reclines, and tilt towards an end, condensate draining has an inclined-plane that is folded to smoke-box by the ledge of smoke-box one side, this inclined-plane passes transition smoke-box side and opens the door, and extends to the below at minimum edge, fin inclined-plane always.
3. heat exchanger assembly according to claim 2, it is characterized in that: afterheat heat exchanger adopts the double inclined plane structure, the bottom that is fin is that middle high both sides are low, descend continuously to minimum point by peak, all the bottom of fin forms a pointed double inclined plane, there is the condensed water of the pair of angled tank that runs in the below of its two low side, and this tank two outsides that recline before and after the smoke-box are fixed.
4. heat exchanger assembly according to claim 3, it is characterized in that: compression afterheat heat exchanger middle part snake bend (5) spacing, the projection spacing of snake bend on horizontal plane is constant, make the coiled pipe spacing consistent with the flowing velocity distribution curve of flue gas in the transition smoke-box---promptly middle close, the thin transition gradually in both sides, the shape at fin middle part becomes slick and sly thereupon, form ogive curve---be the ogive curve that raise up of the bottom of fin for symmetry, all the bottom of fin forms the arched surface of a slyness.
5. according to claim 1,2,3,4 described heat exchanger assemblies, it is characterized in that: afterheat heat exchanger and a heat exchanger components are made an integral body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98204955 CN2377477Y (en) | 1998-06-12 | 1998-06-12 | Heat exchanger assembly having condensed exhaust-heat heat-exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98204955 CN2377477Y (en) | 1998-06-12 | 1998-06-12 | Heat exchanger assembly having condensed exhaust-heat heat-exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2377477Y true CN2377477Y (en) | 2000-05-10 |
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ID=33961453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98204955 Expired - Fee Related CN2377477Y (en) | 1998-06-12 | 1998-06-12 | Heat exchanger assembly having condensed exhaust-heat heat-exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2377477Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100400964C (en) * | 2005-11-30 | 2008-07-09 | 王晓伟 | Condensate water recovery device for condenser |
| CN101191666B (en) * | 2006-11-20 | 2011-03-16 | 海尔集团公司 | Condensing heat exchanger for gas water heater |
| CN104930760A (en) * | 2015-06-04 | 2015-09-23 | 阮积恩 | Condenser capable of improving condensing efficiency |
| CN105222347A (en) * | 2014-05-30 | 2016-01-06 | 海尔集团技术研发中心 | Condensed type combustion gas water heater |
| CN107461966A (en) * | 2017-07-24 | 2017-12-12 | 珠海格力电器股份有限公司 | Heat pump unit, micro-channel heat exchanger and manufacturing method thereof |
| CN109579292A (en) * | 2018-09-27 | 2019-04-05 | 中山市思源电器有限公司 | A kind of boiler hot hydrophone with condensing heat exchanger |
-
1998
- 1998-06-12 CN CN 98204955 patent/CN2377477Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100400964C (en) * | 2005-11-30 | 2008-07-09 | 王晓伟 | Condensate water recovery device for condenser |
| CN101191666B (en) * | 2006-11-20 | 2011-03-16 | 海尔集团公司 | Condensing heat exchanger for gas water heater |
| CN105222347A (en) * | 2014-05-30 | 2016-01-06 | 海尔集团技术研发中心 | Condensed type combustion gas water heater |
| CN105222347B (en) * | 2014-05-30 | 2018-03-16 | 海尔集团技术研发中心 | Condensed type combustion gas water heater |
| CN104930760A (en) * | 2015-06-04 | 2015-09-23 | 阮积恩 | Condenser capable of improving condensing efficiency |
| CN107461966A (en) * | 2017-07-24 | 2017-12-12 | 珠海格力电器股份有限公司 | Heat pump unit, micro-channel heat exchanger and manufacturing method thereof |
| CN109579292A (en) * | 2018-09-27 | 2019-04-05 | 中山市思源电器有限公司 | A kind of boiler hot hydrophone with condensing heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |