CN110530021A - A kind of pre-heated burning coil condensation heat exchanger - Google Patents

A kind of pre-heated burning coil condensation heat exchanger Download PDF

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Publication number
CN110530021A
CN110530021A CN201910913480.3A CN201910913480A CN110530021A CN 110530021 A CN110530021 A CN 110530021A CN 201910913480 A CN201910913480 A CN 201910913480A CN 110530021 A CN110530021 A CN 110530021A
Authority
CN
China
Prior art keywords
heat exchanger
cover
gas
condensation heat
burning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910913480.3A
Other languages
Chinese (zh)
Inventor
赵华
李志伟
黄根武
王长财
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.)
SHANDONG AIKEDUO THERMAL ENERGY TECHNOLOGY CO LTD
Original Assignee
SHANDONG AIKEDUO THERMAL ENERGY TECHNOLOGY CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANDONG AIKEDUO THERMAL ENERGY TECHNOLOGY CO LTD filed Critical SHANDONG AIKEDUO THERMAL ENERGY TECHNOLOGY CO LTD
Priority to CN201910913480.3A priority Critical patent/CN110530021A/en
Publication of CN110530021A publication Critical patent/CN110530021A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/62Mixing devices; Mixing tubes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/66Preheating the combustion air or gas
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H8/00Fluid heaters having heat-generating means specially adapted for extracting latent heat from flue gases by means of condensation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H9/00Details
    • F24H9/0005Details for water heaters
    • F24H9/0036Dispositions against condensation of combustion products
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H9/00Details
    • F24H9/18Arrangement or mounting of grates, burners, or heating elements
    • F24H9/1809Arrangement or mounting of grates, burners, or heating elements for water heaters
    • F24H9/1836Arrangement or mounting of grates, burners, or heating elements for water heaters fluid combustible heating means
    • 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]
    • 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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The invention discloses a kind of pre-heated burning coil condensation heat exchangers, including detachable main body, the flow direction in detachable main body according to gas be disposed with using equipment itself waste heat treat burning gases preheated and mixed pretreatment unit, convenient for gas burning burner and convenient for the heat collector of Absorption of Medium energy.Performance indexes of the present invention meets GB25034-2010 " gas-heating water heater " standard, condensed water etching problem can effectively be solved, nitrogen oxides (being lower than 30mg/M3) and CO discharge amount are lower than 300ppm, coil pipe can be dismantled to be cleaned or replaced, facilitate after-sales service to maintain, effectively reduces burning cavity temperature.

Description

A kind of pre-heated burning coil condensation heat exchanger
Technical field
The present invention relates to a kind of wall-hung boilers to premix heat exchanger entirely, and in particular to a kind of pre-heated burning coil condensation heat exchange Device belongs to full premixed condensed technical field of heat exchange.
Background technique
In gas fired-boiler application field, including gas-heating water heater and commercial gas boiler, country is in environmental protection policy Under driving, the efficiency grade of boiler increasingly requires to reach level-one efficiency (see GB20665-2015 " domestic gas instantaneous water heater With gas-heating water heater energy efficiency market and efficiency grade "), stack gas emissions especially CO(mean hours concentration limit value Lower than 2000ppm) and NOX(mean hours concentration limit value be lower than 30mg/M3) also have strict requirements (see GB25034- 2012 " gas-heating water heaters ", GB13271-2014 " emission standard of air pollutants for boilers ").
Meet these requirements, from the point of view of technology, it is important that the burner and heat exchanger of core want energy in boiler Enough reach this requirement.But domestic these technical equipment of shortage, the equipment for being able to satisfy requirement are substantially needed from Europe at present Import, and the equipment of import is in use, since domestic combustion gas quality and environment influence, tends not to reach ideal The situations such as effect causes maintenance difficult, heat exchange efficiency decline, and service life reduces.
Therefore domestic demands research and development break through this technical bottleneck, largely develop the various of suitable for China and are able to satisfy requirement The equipment that burner and heat exchange equipment or burner and heat exchanger combine.Up to the present, the country also has similar really The same type equipment in Europe appears on the market, but because technology is immature or different to the understanding of technology, there is impracticable, unstable The various defects such as fixed, unreasonable are unable to satisfy country to energy-saving and environment-friendly requirement.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the above-mentioned deficiency of the prior art, a kind of performance is provided and is met and exceeded Country-level efficiency and standard limit of smog release can be easy maintenance, being capable of reliable and stable work and service life long pre-heated Burn coil condensation heat exchanger.
To solve the above problems, the invention adopts the following technical scheme: a kind of pre-heated burning coil condensation heat exchanger, packet Detachable main body is included, is disposed with using equipment itself waste heat according to the flow direction of gas to be combusted in detachable main body Gas is preheated and mixed pretreatment unit, convenient for gas burning burner and convenient for the collection hot charging of Absorption of Medium energy It sets.
Be that the present invention advanced optimizes above scheme below: the pretreatment unit includes for treating burning gases The first flow guiding unit preheated.
Advanced optimize: being provided between first flow guiding unit and burner further mixes fuel with air The second flow guiding unit closed.
Advanced optimize: first flow guiding unit includes for flowing the deflector being oriented to for gas to be combusted.
It advanced optimizes: being provided with sealing upper cover on the burner, covered in sealing and be provided with upper cover, sealing upper cover, The diversion cavity convenient for gas flowing is formed between upper cover, deflector.
It advanced optimizes: being provided with protrusion on the deflector.
Advanced optimize: the protrusion is pyramidal structure.
Advanced optimize: second flow guiding unit includes support base, is provided with blade and air inlet on support base.
Advanced optimize: covered in the sealing die casting have it is multiple convenient for the connection that upper cover is connect with other component will be sealed Part.
It advanced optimizes: being provided with bottom case on the heat collector, bottom case is connected with anti-down windshield plate, bottom case and down-draught-proof Baffle is formed using integrated die-casting.
By testing and actually using, the present invention has the advantages that with respect to traditional heat exchangers and advantage:
1. performance indexes meets GB25034-2010 " gas-heating water heater " standard;
2, condensed water etching problem is effectively solved;
3, extremely low nitrogen oxides (being lower than 30mg/M3) and CO discharge (being lower than 300ppm);
4, coil pipe can be dismantled to be cleaned or replaced, after-sales service is facilitated to maintain;
5, effective burning cavity cooling;
6, air fuel gas reasonably flows mixing;
7, small in size, versatility is high, compatible more power types;
8, single pass coil pipe compares the coil pipe of multichannel, and no-welding-spot avoids corrosion due to welding, avoids moisture seal and let out Leakage;
9, the heat exchangers such as straight tube are compared, this heat exchanger heat exchange area is bigger under same volume, and power is higher, preferably saves wall hanging The space of furnace.
Present invention will be further explained below with reference to the attached drawings and examples.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the present invention in embodiment;
Fig. 2 is present invention explosive view in embodiment;
Fig. 3 is the structural schematic diagram of pretreatment unit in embodiment of the invention;
Fig. 4 is the partial enlarged view of pretreatment unit in embodiment of the invention;
Fig. 5 is the structural schematic diagram of deflector in embodiment of the invention;
Fig. 6 is the side view of Fig. 5;
Fig. 7 is the structural schematic diagram that bottom case is isolated in the present invention in embodiment;
Fig. 8 is the structural schematic diagram that the present invention seals upper cover in embodiment;
Fig. 9 is the enlarged diagram in Fig. 8 at A.
In figure: 1- deflector;2- burner;3- seals upper cover;4- inlet chamber;5- blade;6- protrusion;7- diversion cavity;8- Air inlet;9- support base;10- igniter;11- circular hole;12- upper cover;13- groove;14- coil pipe;15- water outlet;16- water inlet Mouthful;17- crossover sub;18- fume side shell;19- influent side shell;20- bottom case;The anti-down windshield plate of 21-;22- bolt;24- boss; 25- anti-rotation step.
Specific embodiment
Embodiment, as shown in figs 1-9, a kind of pre-heated burning coil condensation heat exchanger, including detachable main body, detachably Flow direction in main body according to gas, which is disposed with, treats burning gases using equipment itself waste heat and is preheated and mixed Pretreatment unit, convenient for gas burning burner 2 and convenient for medium (water) absorb energy heat collector.
The detachable main body includes that the upper cover 12 of the top of burner 2 is arranged in, pretreatment unit be located at burner 2 with it is upper Between lid 12.
Be provided with the inlet chamber 4 entered convenient for gas in the upper cover 12, the lower end of upper cover 12 by ring structure sealing Upper cover 3 encapsulates, and burner 2 is mounted in sealing upper cover 3.
The lower section of sealing upper cover 3 is arranged in the heat collector, and heat collector is coil pipe 14, and the longitudinal section of coil pipe 14 is flat It is round.
The coil pipe 14 is spaced apart to be sleeved on outside burner 2, and the both ends of coil pipe 14 are respectively arranged with water outlet 15 and water inlet 16, design in this way is convenient for absorbing energy.
The outside of the coil pipe 14 is enclosed with fume side shell 18 and influent side shell 19, fume side shell 18 and influent side shell 19 it Between be provided with gasket and the two pass through fastening bolt connect.
Crossover sub 17 is separately installed on the water outlet 15 and water inlet 16, the side of fume side shell 18 is provided with out Air port.
Bottom case 20, the side one of bottom case 20 are provided between 14 lower end of coil pipe and fume side shell 18 and influent side shell 19 Body is connected with the anti-down windshield plate 21 being used cooperatively with air outlet.
The anti-down windshield plate 21 is tongue structure, leans on the position of proximal edge to be provided with crimping on anti-down windshield plate 21, should The opening that the side of crimping is provided with convenient for flue gas outflow.
The bottom case 20 and anti-down windshield plate 21 are formed using integrated die-casting, and anti-down windshield plate 21 and fume side shell 18 it Between be provided with gasket, design in this way can effectively promote the leakproofness between anti-down windshield plate 21 and fume side shell 18.
The pretreatment unit includes the first flow guiding unit preheated for treating burning gases, the first flow guiding unit It is mainly preheated gas to be combusted, while also contributing to the mixing of fuel and air.
Being provided between the lower section and burner 2 of first flow guiding unit further makes fuel mixed with air The full combustion that second flow guiding unit, in this way design are convenient for fuel.
First flow guiding unit include for flowing the deflector 1 that is oriented to for gas to be combusted, deflector 1 be with The circular configuration that 12 lower end of upper cover adapts to, and the diameter of deflector 1 is less than the internal diameter of 12 lower end of upper cover, design in this way is easily installed Close to the position of lower section in upper cover 12.
The deflector 1 is arranged between upper cover 12 and burner 2, and deflector 1 respectively with the upper end of burner 2 and The setting spaced apart of the lower end of upper cover 12.
The sealing upper cover 3, upper cover 12 form diversion cavity 7 convenient for gas flowing between deflector 1, diversion cavity 7 it is vertical Section is rectangle, designs the heat for being convenient for gas absorption features component during flowing in this way.
Position corresponding with the output end of inlet chamber 4 is provided with protrusion 6, the protrusion 6 and deflector 1 on the deflector 1 Integrally connected.
Described raised 6 be pyramidal structure, and protrusion 6 longitudinal section be obtuse angle, also can according to need be set as acute angle or Other angles, in this way design are convenient for dispersing the gas that inlet chamber 4 exports.
Described raised 6 are arranged in position of the upper surface close to middle part of deflector 1, and design is convenient for gas to extending out in this way It dissipates, as the mixing of air and fuel is convenient in the continuous variation of 7 internal diameter of diversion cavity.
The burner 2 is columnar structured, and multiple circular holes 11 are offered on burner 2, is arranged a little in burner 2 Firearm 10, the upper end of igniter 10 extend to 12 upper surface of upper cover and connect to power supply.
Second flow guiding unit includes the support base 9 for being mounted on 2 upper end of burner, and the longitudinal section of support base 9 is step Shape structure, the position on support base 9 by proximal edge are mounted on the upper end of sealing upper cover 3.
The upper surface of the support base 9 is connected to the lower end surface of deflector 1 by multiple cushion blocks of annular array, adjacent Spaced apart between two cushion blocks, design in this way enters between support base 9 and deflector 1 convenient for gas to be combusted.
Position corresponding with burner 2 annular array has multiple blades 5 being obliquely installed, blade 5 on the support base 9 With 9 integrally connected of support base, since being inclined on support base 9 for blade 5 forms multiple air inlets 8, design is convenient in this way Gas enters in burner 2.
Position corresponding with igniter 10 offers the groove 13 for accommodating igniter 10 on the deflector 1, sets in this way Meter is convenient for the installation of igniter 10.
Die casting has multiple convenient for will seal the connector that upper cover 3 is connect with other component, Duo Gelian in the sealing upper cover 3 Fitting circular array is in sealing upper cover 3.
The sealing upper cover 3 is die casting aluminium sealing cover, and connector is bolt 22, or anchor bolt, and bolt 22 uses The connection that high-strength bolt, in this way design are convenient for sealing upper cover 3 and other component.
The position connecting on the bolt 22 with sealing upper cover 3 is provided with anti-rotation unit, and design in this way can be effectively prevented The rotation of bolt 22, while the compactness that bolt 22 is connect with sealing upper cover 3 can also be increased.
The position connecting in the sealing upper cover 3 with bolt 22 is connected with boss 24, and design in this way is anti-convenient for accommodating Turn unit.
The anti-rotation unit includes the anti-rotation step 25 with 22 integrally connected of bolt, and the cross section of anti-rotation step 25 is square Shape also can according to need and be set as triangle or polygon and irregular shape, and design in this way is convenient for pressing with sealing upper cover 3 Casting together, prevents bolt 22 from rotating.
Working principle explanation:
1, the mixed gas circulation path of combustion gas and air:
Combustion gas and air are inside preceding premix blower after mixing, and mixed gas enters inlet chamber 4 from air inlet, at this time air-flow It will not be directly entered combustion chamber, but to pass through diversion cavity 7, gas absorbs the heat for being conducted through and when burning herein, right Air inlet cavity shell (upper cover 12) is cooled down, to cool the temperature of air inlet cavity shell, while mixed gas itself is because inhaling It has received heat and itself has been preheated, be more advantageous to burning, after mixed gas flows through diversion cavity 7, just entered stainless steel It in burner (burner 4) cylinder, then goes out from the aperture (circular hole 11) on cylinder, into combustion chamber, ignition electrode (device) is lighted It burns after mixed gas;
2, the generation of condensed water and flue gas emission path:
The flue gas that gas generates when burning is (mainly by CO2With heat form) under the action of blower pressure from Stainless Steel Coil Passing through in gap between (coil pipe 14), the heat overwhelming majority is taken away by the cold water flowed in Stainless Steel Coil, it heated cold water, Another important composition composition (high-temperature vapor) that remaining burning generates, when the gap between flue gas flows through coil pipe 14, high temperature The cold water that heat in vapor is flowed in Stainless Steel Coil absorbs, and becomes condensed water after high-temperature vapor heat release, along Outside tube wall flows down, and through the discharge of the condensation mouth of a river, the bottom side of fume side shell 18 and influent side shell 19, cigarette is arranged in the condensation mouth of a river The bottom of gas side shell 18 and influent side shell 19 is provided with sink, which is connected to the condensation mouth of a river;
High-temperature flue gas in combustion chamber is separated by Stainless Steel Coil and bottom case 20, can only be by the gap between Stainless Steel Coil Flue gas flow-disturbing room can be flowed to, is finally discharged from smoke outlet (air outlet).
In use, bottom case 20 plus gas baffle gasket are fixed on fume side shell 18, by Stainless Steel Coil (coil pipe 14) it covers upper sleeve gasket and is packed into influent side shell 19 after being put into coil pipe gasket, heat insulation bottom board is then placed in, then by influent side 19 plus side shell gasket of shell is screwed on fume side shell 18, is packed on the fume side shell 18 installed and influent side shell 19 Upper sealing cushion for cover, then installation and fit sealing upper cover 3, then deflector 1, diversion cavity sealing plate, burner gasket, stainless Steel burner (burner 2) is installed in air inlet cavity shell (upper cover 12), and heat-insulated upper plate is reloaded into after installing, inlet chamber shell Body adds gasket, is fixed in sealing upper cover 3.
By testing and actually using, the present invention has the advantages that with respect to traditional heat exchangers and advantage:
1. performance indexes meets GB25034-2010 " gas-heating water heater " standard;
2, condensed water etching problem is effectively solved;
3, extremely low nitrogen oxides (being lower than 30mg/M3) and CO discharge (being lower than 300ppm);
4, coil pipe can be dismantled to be cleaned or replaced, after-sales service is facilitated to maintain;
5, effective burning cavity cooling;
6, air fuel gas reasonably flows mixing;
7, small in size, versatility is high, compatible more power types;
8, single pass coil pipe compares the coil pipe of multichannel, and no-welding-spot avoids corrosion due to welding, avoids moisture seal and let out Leakage;
9, the heat exchangers such as straight tube are compared, this heat exchanger heat exchange area is bigger under same volume, and power is higher, preferably saves wall hanging The space of furnace;
The present invention life production in realize its commercial value approach first is that: in household gas-heating water heater using this Heat exchanger is made in invention, and heating and the hot water function of high-efficient energy-saving environment friendly may be implemented;Realization means second is that: pass through the present invention in parallel Combination, commercial module furnace may be implemented.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention, for this field skill For art personnel, it is clear that invention is not limited to the details of the above exemplary embodiments, and without departing substantially from spirit of the invention or In the case where essential characteristic, the present invention can be realized in other specific forms, therefore, in all respects, should all incite somebody to action Embodiment regards exemplary as, and is non-limiting, the scope of the present invention by appended claims rather than on state Bright restriction, it is intended that including all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention Interior, any reference signs in the claims should not be construed as limiting the involved claims.

Claims (10)

1. a kind of pre-heated burning coil condensation heat exchanger, including detachable main body, it is characterised in that: detachably in main body according to The flow direction of gas, which is disposed with, treats that burning gases are preheated and mixed pretreatment is filled using equipment itself waste heat It sets, convenient for the burner (2) of gas burning and convenient for the heat collector of Absorption of Medium energy.
2. the pre-heated burning coil condensation heat exchanger of one kind according to claim 1, it is characterised in that: the pretreatment dress Set the first flow guiding unit including being preheated for treating burning gases.
3. the pre-heated burning coil condensation heat exchanger of one kind according to claim 2, it is characterised in that: first water conservancy diversion Being provided between unit and burner (2) further makes fuel the second flow guiding unit mixed with air.
4. the pre-heated burning coil condensation heat exchanger of one kind according to claim 2, it is characterised in that: first water conservancy diversion Unit includes for flowing the deflector (1) being oriented to for gas to be combusted.
5. the pre-heated burning coil condensation heat exchanger of one kind according to claim 4, it is characterised in that: the burner (2) it is provided with sealing upper cover (3) on, is provided with upper cover (12) in sealing upper cover (3), seals upper cover (3), upper cover (12), water conservancy diversion The diversion cavity (7) convenient for gas flowing is formed between plate (1).
6. the pre-heated burning coil condensation heat exchanger of one kind according to claim 4 or 5, it is characterised in that: the water conservancy diversion Raised (6) are provided on plate (1).
7. the pre-heated burning coil condensation heat exchanger of one kind according to claim 6, it is characterised in that: the protrusion (6) For pyramidal structure.
8. the pre-heated burning coil condensation heat exchanger of one kind according to claim 3, it is characterised in that: second water conservancy diversion Unit includes support base (9), and blade (5) and air inlet (8) are provided on support base (9).
9. the pre-heated burning coil condensation heat exchanger of one kind according to claim 5, it is characterised in that: the sealing upper cover (3) die casting has multiple convenient for will seal the connector that upper cover (3) is connect with other component on.
10. the pre-heated burning coil condensation heat exchanger of one kind according to claim 1, it is characterised in that: the collection hot charging It sets and is provided with bottom case (20), bottom case (20) is connected with anti-down windshield plate (21), and bottom case (20) and anti-down windshield plate (21) use Integrated die-casting molding.
CN201910913480.3A 2019-09-25 2019-09-25 A kind of pre-heated burning coil condensation heat exchanger Pending CN110530021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910913480.3A CN110530021A (en) 2019-09-25 2019-09-25 A kind of pre-heated burning coil condensation heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910913480.3A CN110530021A (en) 2019-09-25 2019-09-25 A kind of pre-heated burning coil condensation heat exchanger

Publications (1)

Publication Number Publication Date
CN110530021A true CN110530021A (en) 2019-12-03

Family

ID=68670311

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910913480.3A Pending CN110530021A (en) 2019-09-25 2019-09-25 A kind of pre-heated burning coil condensation heat exchanger

Country Status (1)

Country Link
CN (1) CN110530021A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111336686A (en) * 2020-03-03 2020-06-26 张宗凤 Condensing type gas wall-mounted furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111336686A (en) * 2020-03-03 2020-06-26 张宗凤 Condensing type gas wall-mounted furnace

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