CN104251629A - Heat exchanger and gas water heater with same - Google Patents

Heat exchanger and gas water heater with same Download PDF

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Publication number
CN104251629A
CN104251629A CN201410477244.9A CN201410477244A CN104251629A CN 104251629 A CN104251629 A CN 104251629A CN 201410477244 A CN201410477244 A CN 201410477244A CN 104251629 A CN104251629 A CN 104251629A
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CN
China
Prior art keywords
heat
water
heat exchange
heat exchanger
tank shell
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Application number
CN201410477244.9A
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Chinese (zh)
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CN104251629B (en
Inventor
叶远璋
莫家盛
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广东万和新电气股份有限公司
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Priority to CN201410477244.9A priority Critical patent/CN104251629B/en
Publication of CN104251629A publication Critical patent/CN104251629A/en
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Publication of CN104251629B publication Critical patent/CN104251629B/en

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]

Abstract

The invention discloses a heat exchanger and a gas water heater with the same. The heat exchanger comprises a water tank shell, a water inlet pipe, a water outlet pipe, a plurality of straight pipes and heat exchange fins. The heat exchanger is mainly technically characterized in that a flue gas channel with a high-temperature flue gas section, a sensible heat exchange section and a latent heat exchange section is enclosed by the water tank shell, the multiple straight pipes transversely penetrate the sensible heat exchange section and the latent heat exchange section of the flue gas channel, the heat exchange fins sequentially penetrate the straight pipes in an overlaid manner, the various straight pipes are connected with one another to form a heat exchange circuit, and the heat exchange circuit is communicated with the water inlet pipe and the water outlet pipe. The gas water heater with the heat exchanger comprises a combustor with an inversion combustion function. The heat exchanger is arranged below the combustor, and the high-temperature flue gas section in the water tank shell is close to the combustor. The heat exchanger and the gas water heater have the advantages that sensible heat exchange and latent heat exchange are integrated with each other by the aid of the heat exchanger, accordingly, internal spaces of the gas water heater can be saved, the heat exchange area can be effectively enlarged, the heat exchange efficiency can be improved, and the cost of products can be reduced advantageously; the gas water heater is high in heat exchange efficiency and favorable for draining condensate water.

Description

Heat exchanger and there is its gas heater
Technical field
The invention belongs to gas heater field, relate to a kind of heat exchanger particularly and there is its gas heater.
Background technology
Condensed type combustion gas water heater can make full use of the gasification latent heat of combustion product gases to improve the thermal efficiency, therefore has energy-efficient characteristic, is thus extensively carried out.Existing condensing heat exchanger usually and main heat exchanger split design, condensing heat exchanger by independently seal casinghousing, be placed in the parts such as heat exchanger tube in this housing and knockout and form.The condensed type combustion gas water heater of this structure not only internal main heat exchanger and condensing heat exchanger takes up space more, so that can not optimize heat exchange area, and the production technology of machine product is numerous and diverse, and so not only bad for raising heat exchange efficiency, and manufacturing cost is high.For overcoming these defects, special heat exchanger and the gas heater with it to be developed.
Summary of the invention
The one side of technical problem to be solved by this invention to provide a kind of heat exchanger, it can not only integrate sensible heat transfer and latent heat heat exchange, to save gas heater inner space, effectively increases heat exchange area, thus raising heat exchange efficiency, and be conducive to reducing product cost.
The another aspect of technical problem to be solved by this invention to provide a kind of gas heater, and be wherein provided with heat exchanger described according to a first aspect of the present invention, not only heat exchange efficiency is high for it, is conducive to the discharge of condensed water simultaneously.
The technical scheme that the present invention solves the employing of its technical problem is: a kind of heat exchanger, comprise water tank shell, water inlet pipe, outlet pipe, straight tube and heat exchange fin, described water tank shell surrounds the exhaust gases passes with high-temperature flue gas section, sensible heat transfer section, latent heat heat exchanging segment, many straight tubes pass across the exhaust gases passes of sensible heat transfer section and latent heat heat exchanging segment, heat exchange fin is stacked to be successively through on straight tube, each straight tube connects into heat-exchanging loop, and described heat-exchanging loop is communicated with water inlet pipe and outlet pipe.
According to an example of the present invention, the water tank shell outer wall of described high-temperature flue gas section is provided with coil pipe, and the water side of coil pipe connects outlet pipe, and the water inlet end of coil pipe connects the water side of heat-exchanging loop.Being provided with of coil pipe is beneficial to raising heat exchange efficiency; And adopt the technological means of the water side of the water side connection outlet pipe of coil pipe, the water inlet end connection heat-exchanging loop of coil pipe, in other words, water is after latent heat heat exchanging segment and sensible heat transfer section carry out heat exchange, flow into again in coil pipe and carry out heat exchange, and coil pipe coils in high-temperature flue gas section, employing like this " cold to cold " i.e. cold water first by the latent heat heat exchanging segment of relatively low temperature carry out heat exchange, " heat is to heat " namely through diving, the hot water of sensible heat transfer section enters the mode of heating that the high-temperature flue gas section with the highest temperature carries out heat exchange, be more conducive to body inner fluid and absorb heat energy.
According to an example of the present invention, the total length of described sensible heat transfer section and latent heat heat exchanging segment is 2/3 ~ 5/8 of exhaust gases passes length, the length of described sensible heat transfer section is 2 ~ 2.5 times of the length of latent heat heat exchanging segment, and described " length " refers to the length along flow of flue gas direction.Scope and the area of exhaust gases passes is occupied, to improve heat exchange efficiency further by reasonable disposition sensible heat transfer section and/or latent heat heat exchanging segment.
According to an example of the present invention, described straight tube is array arrangement, and adjacent two layers straight tube mutual dislocation is arranged.To play the effect of flow-disturbing.
According to an example of the present invention, described heat exchanger also comprises the left and right deflector being provided with convex closure, described water tank shell two side is provided with fixed head, the both ends of straight tube are fixed on water tank shell through fixed head, left and right deflector presses the fixed head of water tank shell both sides respectively, convex closure on the deflector of left and right is crisscross arranged, and convex closure is stretched in the end of adjacent two straight tubes, forms a roundabout water route.Adopt convex closure to replace connecting in prior art the U-tube of adjacent two straight tubes, can reduce thermal loss, contribute to the global formation of product simultaneously, Assembly of the parts technique is also simple.
According to an example of the present invention, described convex closure shape triangular in shape or quadrangle are arranged, and convex closure is stretched in the end of adjacent many straight tubes, are formed and have heat exchange water route in parallel.
According to an example of the present invention, described water tank shell, water inlet pipe, outlet pipe, straight tube and heat exchange fin are manufactured by stainless steel material.Just because the present invention integrates sensible heat transfer and latent heat heat exchange, adopting and there is corrosion resistance characteristic stainless steel material manufacture heat exchanger, not only having to utilize and reduce material cost, and effectively can improve the service life of product.
According to an example of the present invention, described water tank shell, water inlet pipe, outlet pipe, straight tube, heat exchange fin, fixed head and left and right deflector are manufactured by stainless steel material.
A kind of gas heater, comprises the burner being inverted burning, and the above heat exchanger, described heat exchanger is placed in the below of burner, and high-temperature flue gas section is near burner in water tank shell, described water inlet pipe connects outside cold water source, and outlet pipe connects hot water water spot.
According to an example of the present invention, below described water tank shell internal latent heat heat exchanging segment, be provided with the exhaust fume collecting hood collecting condensed water.
The present invention compares produced beneficial effect with background technology: the present invention adopts the heat exchanger integrating sensible heat transfer and latent heat heat exchange, namely water tank shell surrounds the exhaust gases passes with high-temperature flue gas section, sensible heat transfer section, latent heat heat exchanging segment, many straight tubes pass across the exhaust gases passes of sensible heat transfer section and latent heat heat exchanging segment, heat exchange fin is stacked to be successively through on straight tube, each straight tube connects into heat-exchanging loop, described heat-exchanging loop is communicated with water inlet pipe and outlet pipe, forms the heating water route of " water inlet pipe--heat-exchanging loop--outlet pipe ".Therefore the present invention can not only save gas heater inner space, effectively increases heat exchange area, improve heat exchange efficiency, and be conducive to reducing product cost.
Further, the gas heater of above-mentioned heat exchanger is provided with in the present invention, adopt the combustion system of inversion type, and in water tank shell, high-temperature flue gas section is near burner, namely heat exchanger is according to from the orientation placement under upper be " high-temperature flue gas section → sensible heat transfer section → latent heat heat exchanging segment ".Therefore the present invention not only heat exchange efficiency is high, be conducive to the discharge of condensed water simultaneously.
Accompanying drawing illustrates:
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of heat exchanger 001 in the present invention;
Fig. 2 is the explosive view of Fig. 1, and be graphic simplicity, wherein straight tube 04 only schematically lists one, and heat exchange fin 05 only schematically provides some;
Fig. 3 is the explosive view of straight tube 04 in Fig. 1 or Fig. 2, fixed head 09, left deflector 07, right deflector 08, and wherein straight tube 04 only schematically provides one, with graphic simplicity;
Fig. 4 is gas heater schematic diagram in the present invention.
Detailed description of the invention: be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein in each figure, identical label represents identical part.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
What need be specifically noted is, term "left", "right", " on ", D score, the orientation of the instruction such as " end " or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description, instead of the device of instruction indication must have specific orientation, can not be interpreted as limitation of the present invention.
As shown in Figure 1 and Figure 2, the heat exchanger that the present embodiment relates to, is applicable to gas heater, mainly comprises water tank shell 01, water inlet pipe 02, outlet pipe 03, straight tube 04, heat exchange fin 05, coil pipe 06, left deflector 07, right deflector 08, fixed head 09.And wherein water tank shell 01, straight tube 04, heat exchange fin 05, coil pipe 06, left deflector 07, right deflector 08, fixed head 09 all adopt stainless steel material manufacture.
Described water tank shell 01 surrounds the exhaust gases passes with high-temperature flue gas section 101, sensible heat transfer section 102, latent heat heat exchanging segment 103, and the length sum of described sensible heat transfer section 102 and latent heat heat exchanging segment 103 is 2/3 ~ 5/8 of exhaust gases passes total length, is preferably 2/3; Wherein the length of sensible heat transfer section 102 is 2 ~ 2.5 times of the length of latent heat heat exchanging segment 103, is preferably 2 times." length " described here refers to the length along flow of flue gas direction in water tank shell 01.
Many straight tubes 04 pass across the exhaust gases passes of sensible heat transfer section 102 and latent heat heat exchanging segment 103 on water tank shell 01, the arrangement in array of described straight tube 04, and adjacent two layers straight tube 04 mutual dislocation is arranged, and so can play flow-disturbing effect, to increase heat exchange area and heat-exchange time; Heat exchange fin 05 is stacked to be successively through on straight tube 04, and described heat exchange fin 05 is placed in the exhaust gases passes of sensible heat transfer section 102 and latent heat heat exchanging segment 103.In prior art, finned type heat exchanger only has sensible heat transfer function, therefore on the volume of heat exchange fin and the design of material, does not need temperature and the material requirement of considering condensing heat-exchange.And the finned type heat exchanger described in the present embodiment, integrate sensible heat transfer and latent heat heat exchange, therefore the Volume design etc. of the layout of straight tube and heat exchange fin, all need to match with requirement that is aobvious, latent heat heat exchange.
As shown in Figure 3, the two side place of water tank shell 01 sensible heat transfer section 102 and latent heat heat exchanging segment 103 is fixed with fixed head 09, and two ends of straight tube 04 are each passed through the fixed head of water tank shell 01 both sides, is fixed on water tank shell 01 to make straight tube.Left deflector 07 and right deflector 08 are pressed on the fixed head 09 of water tank shell 01 both sides respectively, left deflector 07 and right deflector 08 are equipped with the convex closure 10 matched with straight tube 04, convex closure 10 is stretched in the end of adjacent two straight tubes 04, convex closure 10 on left deflector 07 and right deflector 08 is crisscross arranged, to be communicated with adjacent two straight tubes 04, finally all straight tubes crossing water tank shell 01 connect into a roundabout heating water route.
Preferably, above-mentioned roundabout heating water route is provided with heating water route in parallel, particularly, described convex closure 10 is arranged to triangle or quadrilateral shape, to hold the end of three and above straight tube 04, to form heating water route in parallel.
Further, water tank shell 01 high-temperature flue gas section 11 outer wall side is provided with coil pipe 06, and the water side of coil pipe 06 connects outlet pipe 03, and the water inlet end of coil pipe 06 connects the water side of heat-exchanging loop.
As shown in Figure 4, a kind of gas heater, comprises above-mentioned heat exchanger 001, burner 002, exhaust fume collecting hood 003.Described burner 002 is inverted and is arranged, and adopt the mode of being inverted burning, heat exchanger 001 is placed in the below of burner 002, and in water tank shell 01 high-temperature flue gas section 101 near burner 002, to receive the high-temperature flue gas that burner 002 discharges, and high-temperature flue gas is drawn deliver to sensible heat transfer section 102 and latent heat heat exchanging segment 103, and below water tank shell 01 internal latent heat heat exchanging segment 103, be provided with exhaust fume collecting hood 003, exhaust fume collecting hood 003 can not only be collected and discharge useless flue gas, also can collect the condensed water produced in heat transfer process.The water inlet pipe 02 of heat exchanger 001 connects outside cold water source, outlet pipe 03 connects hot water water spot.
During gas heater running, burner 002 takes fire, the high-temperature flue gas that burning produces is successively through the high-temperature flue gas section 101--sensible heat transfer section 102--latent heat heat exchanging segment 103 of water tank shell 01, cold water source supplies water to water inlet pipe 02 simultaneously, cold water is directly entered in the latent heat heat exchanging segment straight tube 04 of water tank shell 01 by water inlet pipe 02 and carries out first time heat exchange, warm water after latent heat heat exchange enters in sensible heat transfer section 102 straight tube 04 and carries out second time heat exchange, then flow through coil pipe 06 and carry out third time heat exchange with high-temperature flue gas section, finally be sent to hot water water spot by outlet pipe 03, the condensed water simultaneously produced in latent heat heat transfer process falls to exhaust fume collecting hood 003, useless flue gas is also discharged through exhaust fume collecting hood 003.
In the present invention, heat exchanger integrates sensible heat transfer and latent heat heat exchange, high-temperature flue gas is after sensible heat section, flue-gas temperature is down to about 150 DEG C, after latent heat heat exchange, temperature is down to about 90 DEG C, heat exchanger has not only structurally been done centralized optimization design by visible the present invention, and properties of product effectively improve heat exchange efficiency.Further, the heat exchange mode of " cold to cold ", " heat is to heat " is have employed in the present invention, namely the latent heat heat exchanging segment that cold water is introduced into flue-gas temperature relatively low carries out heat exchange, and the hot water after sensible heat transfer enters coil pipe, the high-temperature flue gas section the highest with flue-gas temperature carries out heat exchange, so be more conducive to, to the absorption of heat energy, improving heat exchange efficiency further.This has broken the heat exchange mode of tradition " cold to heat ", namely changes the idea that traditional temperature difference is greatly more conducive to heat absorption.
Above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.Described various changes, amendment, replacement and modification are all in protection scope of the present invention.

Claims (10)

1. a heat exchanger (001), comprise water tank shell (01), water inlet pipe (02), outlet pipe (03), straight tube (04) and heat exchange fin (05), it is characterized in that: described water tank shell (01) surrounds has high-temperature flue gas section (101), sensible heat transfer section (102), the exhaust gases passes of latent heat heat exchanging segment (103), many straight tubes (04) pass across the exhaust gases passes of sensible heat transfer section (102) and latent heat heat exchanging segment (103), heat exchange fin (05) is stacked to be successively through on straight tube (04), each straight tube (04) connects into heat-exchanging loop, described heat-exchanging loop is communicated with water inlet pipe (02) and outlet pipe (03).
2. heat exchanger according to claim 1, it is characterized in that water tank shell (01) outer wall of described high-temperature flue gas section (101) is provided with coil pipe (06), the water inlet end of coil pipe (06) connects the water side of described heat-exchanging loop, and the water side of coil pipe (06) connects outlet pipe (03).
3. heat exchanger according to claim 2, the total length that it is characterized in that described sensible heat transfer section (102) and latent heat heat exchanging segment (103) is 2/3 ~ 5/8 of exhaust gases passes length, and the length of described sensible heat transfer section (102) is 2 ~ 2.5 times of the length of latent heat heat exchanging segment (103).
4. heat exchanger according to claim 3, is characterized in that described straight tube (04) is arranged in array, and adjacent two layers straight tube (04) mutual dislocation is arranged.
5. the heat exchanger according to any one of claim 1 ~ 4, characterized by further comprising the left and right deflector (07 being provided with convex closure (10), 08), described water tank shell (01) two side has fixed head (09), the both ends of straight tube (04) are fixed on water tank shell (01) through fixed head (09), left and right deflector (07, 08) fixed head (09) of water tank shell (01) both sides is pressed respectively, left and right deflector (07, 08) convex closure (10) on is crisscross arranged, convex closure (10) is stretched in the end of adjacent two straight tubes (04), form a roundabout water route.
6. heat exchanger according to claim 5, it is characterized in that described convex closure (10) shape triangular in shape or quadrangle are arranged, convex closure (10) is stretched in the end of adjacent many straight tubes (04), is formed and has heat exchange water route in parallel.
7. the heat exchanger according to any one of claim 2 ~ 4, is characterized in that described water tank shell (01), straight tube (04), heat exchange fin (05), coil pipe (06) are manufactured by stainless steel material.
8. heat exchanger according to claim 5, is characterized in that described water tank shell (01), straight tube (04), heat exchange fin (05), coil pipe (06), fixed head (09) and left and right deflector (07,08) are manufactured by stainless steel material.
9. a gas heater, comprise the burner (002) being inverted burning, and the heat exchanger (001) according to any one of claim 1 ~ 8, it is characterized in that: described heat exchanger (001) is placed in the below of burner (002), and the interior high-temperature flue gas section (101) of water tank shell (01) is near burner (002), described water inlet pipe (02) connects outside cold water source, and outlet pipe (03) connects hot water water spot.
10. gas heater according to claim 9, its spy is that described water tank shell (01) internal latent heat heat exchanging segment (103) below is provided with the exhaust fume collecting hood (003) collecting condensed water.
CN201410477244.9A 2014-09-18 2014-09-18 Heat exchanger and there is its gas heater CN104251629B (en)

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CN104251629B CN104251629B (en) 2016-06-22

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104713234A (en) * 2015-02-05 2015-06-17 芜湖美的厨卫电器制造有限公司 Water heater heat exchanger and manufacturing method thereof
CN105546822A (en) * 2016-01-12 2016-05-04 宁波市哈雷换热设备有限公司 Inverted fully-premixed combustion stainless steel condensation heat exchanger
CN109642751A (en) * 2016-08-25 2019-04-16 株式会社能率 Heat exchanger and hot water apparatus
CN111220002A (en) * 2018-11-26 2020-06-02 宁波方太厨具有限公司 Heat exchanger and water heater comprising same

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2434613Y (en) * 2000-07-11 2001-06-13 上海天行机电设备成套公司 Condensation heat exchanger appts.
JP2006207901A (en) * 2005-01-26 2006-08-10 Noritz Corp Hot water apparatus
CN201177465Y (en) * 2008-03-04 2009-01-07 刘晓宇 Condensing heat exchanger for gas water heaters
CN201434510Y (en) * 2009-06-01 2010-03-31 广东万和新电气股份有限公司 Sensible heat exchanger of fuel gas water heater
CN201434611Y (en) * 2009-06-11 2010-03-31 广东万和新电气股份有限公司 Sensible heat exchanger of gas water heater
US8202476B2 (en) * 2001-09-19 2012-06-19 Amerifab, Inc. Heat exchanger system used in steel making
CN204100858U (en) * 2014-09-18 2015-01-14 广东万和新电气股份有限公司 Heat exchanger and there is its gas heater

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2434613Y (en) * 2000-07-11 2001-06-13 上海天行机电设备成套公司 Condensation heat exchanger appts.
US8202476B2 (en) * 2001-09-19 2012-06-19 Amerifab, Inc. Heat exchanger system used in steel making
JP2006207901A (en) * 2005-01-26 2006-08-10 Noritz Corp Hot water apparatus
CN201177465Y (en) * 2008-03-04 2009-01-07 刘晓宇 Condensing heat exchanger for gas water heaters
CN201434510Y (en) * 2009-06-01 2010-03-31 广东万和新电气股份有限公司 Sensible heat exchanger of fuel gas water heater
CN201434611Y (en) * 2009-06-11 2010-03-31 广东万和新电气股份有限公司 Sensible heat exchanger of gas water heater
CN204100858U (en) * 2014-09-18 2015-01-14 广东万和新电气股份有限公司 Heat exchanger and there is its gas heater

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104713234A (en) * 2015-02-05 2015-06-17 芜湖美的厨卫电器制造有限公司 Water heater heat exchanger and manufacturing method thereof
CN104713234B (en) * 2015-02-05 2018-09-28 芜湖美的厨卫电器制造有限公司 Water-heater heat-exchanging device and its manufacturing method
CN105546822A (en) * 2016-01-12 2016-05-04 宁波市哈雷换热设备有限公司 Inverted fully-premixed combustion stainless steel condensation heat exchanger
CN109642751A (en) * 2016-08-25 2019-04-16 株式会社能率 Heat exchanger and hot water apparatus
CN111220002A (en) * 2018-11-26 2020-06-02 宁波方太厨具有限公司 Heat exchanger and water heater comprising same

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