CN203443114U - Condensing heat exchanger for gas water heater - Google Patents

Condensing heat exchanger for gas water heater Download PDF

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Publication number
CN203443114U
CN203443114U CN201320430210.5U CN201320430210U CN203443114U CN 203443114 U CN203443114 U CN 203443114U CN 201320430210 U CN201320430210 U CN 201320430210U CN 203443114 U CN203443114 U CN 203443114U
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CN
China
Prior art keywords
heat exchanger
condensing heat
water
fin
gas heater
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Application number
CN201320430210.5U
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Chinese (zh)
Inventor
郑涛
李键
邱朝志
李欣赢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Haier Group Corp
Qingdao Economic and Technological Development Zone Haier Water Heater Co Ltd
Original Assignee
Haier Group Corp
Qingdao Economic and Technological Development Zone Haier Water Heater Co Ltd
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Application filed by Haier Group Corp, Qingdao Economic and Technological Development Zone Haier Water Heater Co Ltd filed Critical Haier Group Corp
Priority to CN201320430210.5U priority Critical patent/CN203443114U/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 utility model discloses a condensing heat exchanger for a gas water heater, belonging to the field of accessories of the gas water heater. The condensing heat exchanger comprises a shell, a smoke collection housing and a water collection groove, wherein the smoke collection housing is arranged in the shell; a heat exchanger is arranged in an accommodating cavity consisting of the smoke collection housing and the water collection groove; the heat exchanger consists of a water pipe and a plurality of fins which are laminated on the outer wall of the water pipe; the edges of the fins close to the outlet side of the smoke collection housing are partially provided with folding edges; the folding edges are laminated to form obstruction to smoke; the fins are provided with holes with turned edges; the turned edges are laminated to form obstruction to the smoke; the holes are circular, elliptical or triangular holes. The condensing heat exchanger has the advantages of compact structure, small size, low cost, optimized fin structure, full heat energy exchange and high recovery rate of latent heat.

Description

A kind of condensing heat exchanger for gas heater
Technical field
The utility model relates to condensing heat exchanger field, more specifically, relates to a kind of condensing heat exchanger for gas heater.
Background technology
Gas heater carries out after a heat exchange, conventionally can produce temperature generally at the middle temperature flue gas of 180 ℃ of left and right, CO, NO in middle temperature flue gas xcontent higher, and there is the steam that heat energy content is higher, if directly discharge, contaminated environment not only, and cause a large amount of heat energy loss.In order to address the above problem, part hot gas water heater adopts condensation heat exchange device to carry out secondary heat exchange, and water is carried out to preheating, and the latent heat of warm flue gas in recovery improves the utilization rate of combustion gas, energy-conserving and environment-protective.
At present, on market, there are two kinds of common condensation heat exchange devices, a kind of employing corrugated stainless steel tubing, on it, be provided with condensed water collecting device, can effectively stop condensed water to corrode condensation heat exchange device, but this heat-exchanger rig processing cost be higher, heat exchange efficiency is low, and volume is larger.
The another kind of pair air inlet structures that adopt, as Chinese patent literature application publication number, CN102589128A discloses a kind of Double air inlet heat-exchange device for condensation type gas water heater, comprise shell, condensation water collection box, condensing heat exchanger and exhaust fume collecting hood, described shell is two ends bypass structure, on the sidewall of described condensation water collection box, be provided with smoke inlet, its bottom is provided with condensed water outlet pipe, directly over described smoke inlet inner side, be provided with the strip baffle plate that prevents that condensed water from flowing out from smoke inlet, on described exhaust fume collecting hood, be provided with exhanst gas outlet, described condensation water collection box is arranged in described shell, described condensing heat exchanger is arranged in described condensation water collection box, described exhaust fume collecting hood be located on described condensation water collection box, and in described condensing heat exchanger is enclosed in.
Heat exchanger heat exchange efficiency that this invention has solved existing condensed type combustion gas water heater is low, the excessive corrosion heat exchanger of condensed water, air-flow freely do not cause CO content in smoke and cross the problems such as high.But middle temperature flue gas imports from smoke inlet, the time of staying in condensing heat exchanger in the process that exhanst gas outlet is derived is shorter, and middle temperature flue gas heat exchange is insufficient, and heat exchange efficiency is lower.In addition, this invention is mainly the preheating requirement that rely on to extend water in the water pipe that the length of water pipe in condensing heat exchanger reaches, therefore the volume of heat-exchanger rig is larger.
Utility model content
Low in order to overcome existing condensing type heat-exchanger rig heat exchange efficiency, the defects such as volume is large, technical problem to be solved in the utility model is to propose a kind of condensing heat exchanger for gas heater, its compact conformation, the little cost of volume are low, and optimized fin structure, thermal energy exchange is abundant, and the rate of recovery of latent heat is high.
For reaching this object, the utility model by the following technical solutions:
A kind of condensing heat exchanger for gas heater, comprise housing, exhaust fume collecting hood and water leg, described exhaust fume collecting hood is located at the inside of described housing, in the cavity volume that described exhaust fume collecting hood and water leg form, heat exchanger is installed, this heat exchanger is comprised of a plurality of fins of closed assembly on the outer wall of water pipe and described water pipe, near exhaust fume collecting hood, export on the described fin edges part of a side and be provided with flanging, after described flanging closed assembly, form stopping flue gas.
Be preferably, on described fin, be provided with the hole with flange, after described flange closed assembly, form stopping flue gas.
Be preferably, the width of described flanging equals the spacing of latter two adjacent described fin of closed assembly.
Be preferably, the width of described flange equals the spacing of latter two adjacent described fin of closed assembly.
Be preferably, described hole is circular, oval or tri-angle-holed.
Further, on the sidewall of described water leg, near place, described water pipe place, be provided with smoke inlet, the upper edge of described smoke inlet inner side is provided with strip baffle plate.
Further, the protrusion position of described condensing heat exchanger both sides is positioned on described strip baffle plate.
Further, the below of described water leg is provided with the outlet pipe being conducted with described water leg.
The beneficial effects of the utility model are: on the fin of condensing heat exchanger, be provided with flange and flanging, optimized the flue gas flow channel on fin, extended the path of smoke gas flow through condensing heat exchanger, thereby improved the heat exchange efficiency of condensing heat exchanger; Optimize the quantity of condensing heat exchanger inner water tube, dwindled the volume of condensing heat exchanger, reduced making material and cost; Adopt the Latent heat rate of recovery of the heat-exchanger rig of above-mentioned condensing heat exchanger to improve 10~15%, cost of manufacture has reduced by 8~10%.
Accompanying drawing explanation
Fig. 1 is for the sectional view of the condensing heat exchanger of gas heater described in embodiment;
Fig. 2 is for the explosive view of the condensing heat exchanger of gas heater described in embodiment;
Fig. 3 is the stereogram of fin described in embodiment.
In figure:
1, housing; 2, exhaust fume collecting hood; 3, water leg; 32, strip baffle plate; 33, outlet pipe 4, heat exchanger; 41, fin; 411, water pipe installing hole; 412, flanging; 413, big hole flange; 414, small sircle hole flange; 42, water pipe.
The specific embodiment
Below in conjunction with accompanying drawing and by the specific embodiment, further illustrate the technical solution of the utility model.
As depicted in figs. 1 and 2, be the structural representation of the condensing heat exchanger for gas heater that provides in the present embodiment.
The condensing heat exchanger for gas heater providing in the present embodiment, comprise housing 1, exhaust fume collecting hood 2, water leg 3, described exhaust fume collecting hood 2 is located at the top of described housing 1, described water leg 3 is located at the inside of described housing 1, in the cavity volume that described exhaust fume collecting hood 2 and water leg 3 form, heat exchanger 4 is installed.
On the sidewall of described water leg 3, near described water pipe 42 places, place, be provided with smoke inlet C (D), the upper edge of described smoke inlet C (D) inner side is provided with strip baffle plate 32, and the below of described water leg 3 is provided with the outlet pipe 33 being conducted with described water leg 3.
Described strip baffle plate 32 is both for preventing that condensed water from flowing out from smoke inlet C (D), and also, for shelving described heat exchanger 4, the protrusion position of described heat exchanger 4 both sides is positioned on described strip baffle plate 32.
Described heat exchanger 4 is comprised of a plurality of fins 41 of closed assembly on the outer wall of water pipe 42 and described water pipe 42, and described water pipe 42 is pipe or square tube, and the quantity of described fin 41 can, according to the preheating degree of cold water, need the heat of exchange rationally to determine.The water that flows into water pipe 42 in this enforcement is the cold water that needs preheating, and in the warm of cold water, a part of origin of heat is in the direct exchange heat of middle temperature flue gas and water pipe 42; A part derives from the exchange heat of fin and middle temperature flue gas, by heat, is passed to water pipe 42; Some derives from steam and transforms in the outer surface generation gas-liquid of fin 41 and water pipe 42, i.e. water vapor condensation liberated heat.
As shown in Figure 3, be the stereogram of the fin that provides in the present embodiment.
Described fin 41 is provided with the water pipe installing hole 411 passing for described water pipe 42, described water pipe installing hole 411 is provided with the hole with flange around, described hole is circular, oval or tri-angle-holed, the present embodiment is preferably circle, and the width of described flange equals the spacing of latter two adjacent fins of closed assembly.
Comprise in the present embodiment a big hole and five small sircle holes, described big hole has big hole flange 413, described small sircle hole has small sircle hole flange 414, a described big hole flange 413 and a small sircle hole flange 414 are located between two described water pipe installing holes 411, and four described small sircle hole flange 414 are located at the periphery of two described water pipe installing holes 411 and a described big hole flange 413.Described big hole flange 413 is located at centre position, is conducive to middle temperature flue gas and shunts to both sides, and four are positioned at peripheral described small sircle hole flange 414, and warm flue gas in a part is flowed along the outward flange of described fin 41.Such layout, can make middle temperature flue gas fully and fin 41 and water pipe 42 fully carry out exchange heat, and the more traditional condensing heat exchanger of the Latent heat rate of recovery has improved 10~15%.
Described fin 41 is provided with flanging 412 in the part, edge of the side near exhaust fume collecting hood 2 outlets, and the width of described flanging 412 equals the spacing of latter two adjacent fins of closed assembly, and its middle part is provided with smoke breach E.
Existence due to flange, make warm flue gas and water pipe 42 occur can by smoke breach E, do not got rid of immediately after exchange heat, and shunted after bumping with flange, warm flue gas in a part is flowed out by the middle part of fin 41 after shunting several times, and in another part, warm flue gas shunting is to the both sides of fin 41.This shows, the existence of flange, has extended path or the time of smoke gas flow through condensing heat exchanger, and middle temperature flue gas is fully contacted with described fin, thereby has improved the heat exchange efficiency of condensing heat exchanger.
During concrete use, the main body heat exchanger of high-temperature flue gas in gas and hot water carries out after an exchange heat, and temperature reduces warm flue gas in formation.
Middle temperature flue gas is first by place, deep bead entrance A (B) arrival smoke inlet C (D) place, and because water pipe 42 is near smoke inlet C (D), importing from smoke inlet C (D), warm flue gas can carry out heat exchange by the water first and in water pipe 42.Wherein, water pipe 42 is water pipe.
Metering function due to big hole flange 413, small sircle hole flange 414 and flanging 412, make not only the flow through middle part of condensing heat exchanger of middle temperature flue gas, but also can locate at the roundabout outward flange place, both sides to condensing heat exchanger, fully contact and carry out heat exchange with fin 41, become low-temperature flue gas, low-temperature flue gas is got rid of by smoke breach E.Meanwhile, fin 41 is collected after heat, by metal heat conduction, continues as the water heating in water pipe.
Said process is the exchange heat for the second time of flue gas, by the continuous circulation of exchange heat for the second time, makes the abundant preheating of the cold water quilt in water pipe.
Below only with embodiment, the utility model is illustrated, but the utility model is not limited to the illustration of above-mentioned size and outward appearance, above-described embodiment should not form any restriction of the present utility model yet.As long as within any improvement that the utility model is done or modification all belong to the protection domain of the utility model claim opinion.

Claims (8)

1. the condensing heat exchanger for gas heater, comprise housing (1), exhaust fume collecting hood (2) and water leg (3), described water leg (3) is located at the inside of described housing (1), in the cavity volume that described exhaust fume collecting hood (2) and water leg (3) form, heat exchanger (4) is installed, this heat exchanger (4) is comprised of a plurality of fins (41) of closed assembly on water pipe (42) and outer wall thereof, it is characterized in that: near exhaust fume collecting hood (2), export on described fin (41) part, edge of a side and be provided with flanging (412), after described flanging (412) closed assembly, form stopping flue gas.
2. the condensing heat exchanger for gas heater according to claim 1, is characterized in that, on described fin (41), is provided with the hole with flange, forms stopping flue gas after described flange closed assembly.
3. the condensing heat exchanger for gas heater according to claim 1, is characterized in that, the width of described flanging (412) equals the spacing of latter two adjacent described fin (41) of closed assembly.
4. the condensing heat exchanger for gas heater according to claim 2, is characterized in that, the width of described flange equals the spacing of latter two adjacent described fin (41) of closed assembly.
5. the condensing heat exchanger for gas heater according to claim 2, is characterized in that, described hole is circular, oval or tri-angle-holed.
6. according to any condensing heat exchanger for gas heater described in claim 1 to 5, it is characterized in that, on the sidewall of described water leg (3), near place, described water pipe (42) place, be provided with smoke inlet, the upper edge of described smoke inlet inner side is provided with strip baffle plate (32).
7. the condensing heat exchanger for gas heater according to claim 6, is characterized in that, the protrusion position of described condensing heat exchanger (4) both sides is positioned on described strip baffle plate (32).
8. the condensing heat exchanger for gas heater according to claim 6, is characterized in that, the below of described water leg (3) is provided with the outlet pipe (33) being conducted with described water leg (3).
CN201320430210.5U 2013-07-18 2013-07-18 Condensing heat exchanger for gas water heater Active CN203443114U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320430210.5U CN203443114U (en) 2013-07-18 2013-07-18 Condensing heat exchanger for gas water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320430210.5U CN203443114U (en) 2013-07-18 2013-07-18 Condensing heat exchanger for gas water heater

Publications (1)

Publication Number Publication Date
CN203443114U true CN203443114U (en) 2014-02-19

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103994579A (en) * 2014-05-20 2014-08-20 艾欧史密斯(中国)热水器有限公司 Gas water heater integrated stainless steel heat exchanger
CN110220394A (en) * 2019-05-24 2019-09-10 宁波方太厨具有限公司 High-efficiency condensation heat exchanger

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103994579A (en) * 2014-05-20 2014-08-20 艾欧史密斯(中国)热水器有限公司 Gas water heater integrated stainless steel heat exchanger
CN103994579B (en) * 2014-05-20 2017-08-01 艾欧史密斯(中国)热水器有限公司 The integrated stainless heat exchanger of gas heater
CN110220394A (en) * 2019-05-24 2019-09-10 宁波方太厨具有限公司 High-efficiency condensation heat exchanger

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