CN107477578A - Combustor and water heater - Google Patents

Combustor and water heater Download PDF

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Publication number
CN107477578A
CN107477578A CN201710928729.9A CN201710928729A CN107477578A CN 107477578 A CN107477578 A CN 107477578A CN 201710928729 A CN201710928729 A CN 201710928729A CN 107477578 A CN107477578 A CN 107477578A
Authority
CN
China
Prior art keywords
burner
fuel element
gas
combustion
air
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
CN201710928729.9A
Other languages
Chinese (zh)
Inventor
梁友新
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.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
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 Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN201710928729.9A priority Critical patent/CN107477578A/en
Publication of CN107477578A publication Critical patent/CN107477578A/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
    • 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
    • F23D14/48Nozzles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/107Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using fluid fuel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/18Arrangement or mounting of grates or heating means
    • F24H9/1809Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1832Arrangement or mounting of combustion heating means, e.g. grates or burners
    • F24H9/1836Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)

Abstract

The invention relates to a burner and a water heater, wherein the burner comprises more than two burning units, an injection port for introducing gas and air is arranged at the first end of each burning unit, a burning port for burning the gas is arranged at the second end of each burning unit, a preset interval is arranged between every two adjacent burning units to form a channel, and the channel is constructed to introduce air to be mixed with smoke formed after the gas is burnt at the burning port. The invention keeps the preset distance between the adjacent combustion units to form a channel, air can be introduced from the channel between the adjacent combustion units to be mixed with the flue gas formed after the combustion of the fuel gas at the combustion port, the excess air coefficient is improved, the heat load is unchanged, the water vapor generated by the combustion reaction of the fuel gas is constant, the introduced air reduces the condensation point of the flue gas generated by the combustion, namely, the water vapor generated by the combustion can be condensed into water only by reducing the temperature by further heat exchange compared with the prior art, and the generation amount of condensed water is reduced.

Description

Burner and water heater
Technical field
The present invention relates to heating system field, more particularly to a kind of burner and water heater.
Background technology
The development of wall-hung boiler at present, environmentally friendly (low NOx drainage) is trend.Low NOx drainage can be realized in industry at present Burner types mainly have all-premixing burner, water cooled burner and shade burner, come for atmospheric burning type wall-hung boiler Say, the most frequently used low NOx drainage burner is water cooled burner.
The water cooled burner used at present, by the structure of existing burner, its burner is all by multiple fuel elements Form the fire hole face of a monoblock side by side, not spacing between single fuel element, air all inside fuel element by, Flame temperature can be reduced, reduces NOx to greatest extent, meanwhile, in order to ensure the stability of flame, its excess air coefficient is unsuitable It is too high, 2.2 are generally should be smaller than, the condensation point of flue gas can be caused higher, so can bring about a problem, its load is smaller When, when the flue gas after burner combustion exchanges heat with heat exchanger, heat exchanger surface easily produces condensed water, causes the corruption of heat exchanging device Erosion and block, so the heat load adjustment of wall-hung boiler than small, causes the adaptability of wall-hung boiler and comfort all poor.
The content of the invention
The purpose of the present invention is to propose to a kind of burner and water heater, and it can solve the problem that excess air coefficient is low, flue gas condensed The problem of dew point is high.
To achieve the above object, the invention provides a kind of burner, it includes two or more fuel element, the burning The first end of unit is provided with the ejecting port for being used for introducing combustion gas and air, and the second end of the fuel element, which is provided with, is used for combustion of burning The port of gas, there is default spacing to form passage between the two neighboring fuel element, the passage is adapted to The flue gas that air is enough introduced to be formed with combustion gas after port burning mixes.
One preferably or in alternative embodiment, the default spacing between every two neighboring fuel element is equal.
One preferably or in alternative embodiment, each fuel element is arranged in parallel.
One preferably or in alternative embodiment, the default spacing between the two neighboring fuel element is 2mm~10mm.
One preferably or in alternative embodiment, the burner includes the tracheae for being connected with combustion gas, and the tracheae is provided with several Nozzle, each corresponding ejecting port of the nozzle, the nozzle are used to spray combustion gas to carry described in surrounding air entrance Ejecting port.
One preferably or in alternative embodiment, the spacing between the nozzle and the ejecting port is 8mm~15mm.
One preferably or in alternative embodiment, the burner includes support, and each fuel element passes through the support Located at the top of the tracheae.
One preferably or in alternative embodiment, the burner includes water pipe, and the first end of the water pipe sequentially passes through respectively First sidepiece of the fuel element, the second end of the water pipe sequentially pass through the second sidepiece of each fuel element.
One preferably or in alternative embodiment, the port includes multigroup gas outlet.
To achieve the above object, the invention provides a kind of water heater, it includes above-mentioned burner.
One preferably or in alternative embodiment, the water heater is burnt gas wall hanging furnace or gas heater.
One preferably or in alternative embodiment, the water heater includes heat exchanger, the flue gas use after the burner combustion Exchanged heat in the heat exchanger.
One preferably or in alternative embodiment, the water heater includes blower fan, and the blower fan, which is used to control, enters adjacent two Air mass flow between the individual fuel element.
Based on above-mentioned technical proposal, the present invention at least has the advantages that:
The embodiment of the present invention will keep default spacing logical to be formed between the fuel element and fuel element that form burner Road, air can introduce from the passage between adjacent fuel element, be mixed with the flue gas formed with combustion gas after port burning, Improve excess air coefficient;Excess air coefficient improves, and thermic load is constant, and vapor caused by fuel gas buring reaction is one Fixed, the air of introducing reduces the condensation point of the flue gas of burning generation, that is, needs further to change relative to prior art Heat drop low temperature can just make water vapor condensation Cheng Shui caused by burning, reduce the growing amount of condensed water.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic front view of burner provided in an embodiment of the present invention;
Fig. 2 is the schematic top plan view of burner provided in an embodiment of the present invention;
Fig. 3 is the schematic side view of burner provided in an embodiment of the present invention.
Label in accompanying drawing:
1- fuel elements;11- ejecting ports;12- ports;The sidepieces of 13- first;The sidepieces of 14- second;
2- tracheaes;21- nozzles;22- air inlets;
3- water pipes;31- first ends;The ends of 32- second;
4- supports.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in embodiment is clearly and completely retouched State.Obviously, described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.Based on this hair Bright embodiment, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made Example, belongs to the scope of protection of the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear", The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " is based on accompanying drawing institutes The orientation or position relationship shown, it is for only for ease of the description present invention and simplifies description, rather than instruction or the dress for implying meaning Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that the present invention is protected The limitation of scope.
Excess air coefficient in the present invention refers to the ratio between air needed for the air actually provided and burning.
As shown in Figures 1 to 3, it is the illustrative examples of burner provided by the invention, in this embodiment, burner bag Two or more fuel element 1 is included, the first end of fuel element 1 is provided with the ejecting port 11 for being used for introducing combustion gas and air, and burning is single Second end of member 1 is provided with the port 12 for combustion gas, and there is default spacing to be formed between two neighboring fuel element 1 Passage, the flue gas that passage is configured to introduce air to be formed with combustion gas after the burning of port 12 mix.
The embodiment of the present invention will keep default spacing between the fuel element 1 and fuel element 1 that form burner, air can To be introduced from the passage between adjacent fuel element 1, mixed, improved with the flue gas formed with combustion gas after the burning of port 12 Excess air coefficient;Excess air coefficient improves, and thermic load is constant, vapor caused by fuel gas buring reaction be it is certain, The air of introducing reduces the condensation point of the flue gas of burning generation, that is, needs the reduction that further exchanged heat relative to prior art Temperature can just make water vapor condensation Cheng Shui caused by burning, reduce the growing amount of condensed water, flue gas after burner combustion During for being exchanged heat with heat exchanger, caused condensed water on heat exchanger can be further reduced, avoids heat exchanging device from causing corruption Erosion and blocking.
In above-described embodiment, can have default spacing between every two neighboring fuel element 1.Per two neighboring burning Default spacing between unit 1 can be with equal.Or the default spacing between every two neighboring fuel element 1 can not also Deng.
In above-described embodiment, each fuel element 1 can be with arranged in parallel.
To ensure the stability of minimum wind supply quantity and flame, the default spacing between two neighboring fuel element 1 can be 2mm~10mm.
Burner provided in an embodiment of the present invention can include the tracheae 2 for being connected with combustion gas, and tracheae 2 is provided with several nozzles 21, The corresponding ejecting port 11 of each nozzle 21, nozzle 21 are used to spray combustion gas, and the combustion gas of injection can carry surrounding air and enter together Enter ejecting port 11.Tracheae 2 is additionally provided with the air inlet 22 for being passed through combustion gas into tracheae 2.
Air needed for burning ejects combustion gas injection surrounding air by nozzle 1 and provided, it is not necessary to provides additional air Can fully it burn, burner provided by the invention belongs to all-premixing burner, so its flame temperature is low, its caused NOx It is low, belong to low NO.
The combustion gas sprayed for ease of nozzle 21 enters ejecting port 11, and can carry surrounding air and enter ejecting port 11, sprays Spacing between mouth 21 and ejecting port 11 can be 8mm~15mm.
Burner provided in an embodiment of the present invention can also include support 4, and each fuel element 1 is located at tracheae 2 by support 4 Top.Further, support 4 can be fixed by screws in the top of tracheae 2.
Burner provided in an embodiment of the present invention can be water cooled burner, i.e., burner can include water pipe 3, water pipe 3 First end 31 sequentially pass through the first sidepiece 13 of each fuel element 1, the second end 32 of water pipe 3 sequentially passes through each fuel element 1 The second sidepiece 14.
In above-described embodiment, the first end 31 of water pipe 3 can be water inlet, and the second end 32 of water pipe 3 can be delivery port; Or the first end 31 of water pipe 3 can be delivery port, the second end 32 of water pipe 3 can be water inlet.
Burner provided in an embodiment of the present invention, its port 12 can include multigroup gas outlet, multigroup gas outlet It is generally aligned in the same plane, forms fire hole face.
Burner provided in an embodiment of the present invention will keep pre- between the fuel element 1 and fuel element 1 that form burner If spacing, air is introduced by the passage between adjacent fuel element 1, with the flue gas formed with combustion gas after the burning of port 12 Mixing, the stability of flame can be ensured.Fuel element of the prior art is gapless, and the air required for burning can only Out of fuel element by, because fire hole area is also limited, when improving air quantity, after air and combustion gas mixing, gas quantity is very few, It is too fast that non-ignitable or gaseous mixture flow velocity can be put, fire is put out, so flame instability.
Burner provided in an embodiment of the present invention will keep pre- between the fuel element 1 and fuel element 1 that form burner If spacing, because the gap between fuel element 1 can also enter air, enter the area increase of air, pass through the combustion of fuel element 1 Burning the air capacity of mouth 12 can be reduced, it is thus possible to enough reduce minimum thermic load.
A specific embodiment of burner provided by the invention is set forth below, in this specific embodiment, burner includes Fuel element 1, tracheae 2, water pipe 3 and support 4.
Fuel element 1 is provided with the ejecting port 11 for being used for introducing combustion gas and air, and the port 12 for fuel gas buring.Gas Pipe 2 is provided with nozzle 21 and air inlet 22, and nozzle 21 is connected on tracheae 2 by thread, and air inlet 22 is used to carry into tracheae 2 For combustion gas.The first end 31 of water pipe 3 is water inlet, and the second end 32 of water pipe 3 is delivery port.First sidepiece 13 of fuel element 1 The water pipe hole for allowing water pipe 3 to pass through is equipped with the second sidepiece 14.
Several fuel elements 1 are arranged in parallel by default spacing, and its spacing is in 2~10mm scopes;Water pipe 3 passes through all combustions Burn the water pipe hole on unit 1 and connected by tube mode tensioner;The nozzle 21 being located on tracheae 2, which is aligned on fuel element 1, to be drawn The center of loophole 11, several both sides of fuel element 1 arranged in parallel are equipped with support 4, and support 4 is connected with tracheae 2, and can To be fastened by fixing screws.
During work, combustion gas enters tracheae 2 by air inlet 22, then ejects combustion gas by nozzle 21, the combustion gas ejected is drawn It is uniform from the ejecting port 11 of fuel element 1 into the internal mix of fuel element 1 together to penetrate surrounding air, finally from fuel element 1 Port 12 flow out after-combustion.Because the air capacity of the combustion gas injection ejected by nozzle 21 is little, after its flue gas heat exchange Condensation point is higher, it is easy to and condensed water is produced, corrodes parts, and if reinforced fuel gas mixes more air and will also result in Flame instability.The present invention carries out the high-temperature flue gas after burning and the air entered between fuel element 1 and fuel element 1 Mixing, by increasing capacitance it is possible to increase the air content in flue gas, make the condensation point of flue gas reduce, do not allow to be also easy to produce condensation after heat exchange.
Meanwhile water enters from the water inlet on water pipe 3, the fuel element 1 of condensation high temperature after water pipe 3 is flowed into, reduces burning The temperature on the surface of unit 1, while the temperature for the combustion gas for being mixed with air can be reduced, flame temperature also can be effectively reduced, is reduced Caused NOx.
Water heater provided in an embodiment of the present invention, it includes above-mentioned burner.
Water heater in above-described embodiment can be burnt gas wall hanging furnace or gas heater etc., can realize heating/heat supply Water is dual-purpose.
Water heater provided in an embodiment of the present invention can include heat exchanger, and the flue gas after burner combustion is used for and heat exchanger Heat exchange.Using burner provided in an embodiment of the present invention, the stability of flame can be ensured, improve the mistake of burner minimum load Surplus air coefficient, the condensation point of flue gas is reduced, condensed water caused by heat exchanger when reduction load is smaller, avoids heat exchanging device from causing Corrosion and blocking;Minimum thermic load can be reduced simultaneously, increases heat load adjustment ratio, improve the adaptability of water heater and using easypro Adaptive.
Water heater provided in an embodiment of the present invention can include blower fan, and blower fan, which is used to control, enters two neighboring fuel element Air mass flow between 1.
The embodiment of the present invention can improve air mass flow by improving the method for rotation speed of fan, and air mass flow increase is superfluous Air coefficient increases, and air mass flow increase, and thermic load is constant, and vapor caused by fuel gas buring reaction is certain, institute It can just make water vapor condensation Cheng Shui caused by burning further to reduce temperature, reduce the output of condensed water.
In the description of the invention, it is to be understood that limit parts using the word such as " first ", " second ", only It is for only for ease of and above-mentioned parts is distinguished, does not such as have Stated otherwise, above-mentioned word does not have particular meaning, therefore not It is understood that as limiting the scope of the invention.
Finally it should be noted that:The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof;To the greatest extent The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that:Still The embodiment of the present invention can be modified or equivalent substitution is carried out to some technical characteristics;Without departing from this hair The spirit of bright technical scheme, it all should cover among the claimed technical scheme scope of the present invention.

Claims (13)

  1. A kind of 1. burner, it is characterised in that:Including two or more fuel element (1), the first end of the fuel element (1) is set There is the ejecting port (11) for introducing combustion gas and air, the second end of the fuel element (1) is provided with the combustion for combustion gas Mouth (12) is burnt, there is default spacing to form passage between the two neighboring fuel element (1), the passage is adapted to The flue gas that air is enough introduced to be formed with combustion gas after the port (12) burning mixes.
  2. 2. burner as claimed in claim 1, it is characterised in that:It is default between per the two neighboring fuel element (1) Spacing is equal.
  3. 3. burner as claimed in claim 1, it is characterised in that:Each fuel element (1) is arranged in parallel.
  4. 4. burner as claimed in claim 1, it is characterised in that:Between default between the two neighboring fuel element (1) Away from for 2mm~10mm.
  5. 5. burner as claimed in claim 1, it is characterised in that:Tracheae (2) including being connected with combustion gas, the tracheae (2) set There are several nozzles (21), each corresponding ejecting port (11) of the nozzle (21), the nozzle (21) is used to spray combustion gas Enter the ejecting port (11) to carry surrounding air.
  6. 6. burner as claimed in claim 5, it is characterised in that:Between between the nozzle (21) and the ejecting port (11) Away from for 8mm~15mm.
  7. 7. burner as claimed in claim 5, it is characterised in that:Including support (4), each fuel element (1) passes through institute State the top that support (4) is located at the tracheae (2).
  8. 8. burner as claimed in claim 1, it is characterised in that:Including water pipe (3), the first end (31) of the water pipe (3) Sequentially pass through the first sidepiece (13) of each fuel element (1), the second end (32) of the water pipe (3) sequentially passes through each described The second sidepiece (14) of fuel element (1).
  9. 9. burner as claimed in claim 1, it is characterised in that:The port (12) includes multigroup gas outlet.
  10. A kind of 10. water heater, it is characterised in that:Including the burner as described in any one of claim 1~9.
  11. 11. water heater as claimed in claim 10, it is characterised in that:The water heater is burnt gas wall hanging furnace or gas and hot water Device.
  12. 12. water heater as claimed in claim 10, it is characterised in that:Including heat exchanger, the flue gas after the burner combustion For being exchanged heat with the heat exchanger.
  13. 13. water heater as claimed in claim 10, it is characterised in that:Including blower fan, the blower fan is used to control into adjacent Air mass flow between two fuel elements (1).
CN201710928729.9A 2017-10-09 2017-10-09 Combustor and water heater Pending CN107477578A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710928729.9A CN107477578A (en) 2017-10-09 2017-10-09 Combustor and water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710928729.9A CN107477578A (en) 2017-10-09 2017-10-09 Combustor and water heater

Publications (1)

Publication Number Publication Date
CN107477578A true CN107477578A (en) 2017-12-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710928729.9A Pending CN107477578A (en) 2017-10-09 2017-10-09 Combustor and water heater

Country Status (1)

Country Link
CN (1) CN107477578A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108534139A (en) * 2018-05-15 2018-09-14 芜湖美的厨卫电器制造有限公司 Burner and water heater
CN110440446A (en) * 2019-08-09 2019-11-12 广东万和新电气股份有限公司 A kind of jet tube assembly
CN110748882A (en) * 2018-07-23 2020-02-04 芜湖美的厨卫电器制造有限公司 Combustor and gas heater who has it

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2603342Y (en) * 2003-03-03 2004-02-11 重庆大学 Combustion heat-exchanging for gas quick water heater
CN101191613A (en) * 2006-11-28 2008-06-04 海尔集团公司 Burner of blue flame gas water heater
CN103742911A (en) * 2014-01-07 2014-04-23 天津城建大学 Fully premixed fuel gas burner
US20150253035A1 (en) * 2014-03-04 2015-09-10 Purpose Co., Ltd. Burner, combustion apparatus, water heating apparatus and combustion method
CN207298940U (en) * 2017-10-09 2018-05-01 珠海格力电器股份有限公司 Combustor and water heater

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2603342Y (en) * 2003-03-03 2004-02-11 重庆大学 Combustion heat-exchanging for gas quick water heater
CN101191613A (en) * 2006-11-28 2008-06-04 海尔集团公司 Burner of blue flame gas water heater
CN103742911A (en) * 2014-01-07 2014-04-23 天津城建大学 Fully premixed fuel gas burner
US20150253035A1 (en) * 2014-03-04 2015-09-10 Purpose Co., Ltd. Burner, combustion apparatus, water heating apparatus and combustion method
CN207298940U (en) * 2017-10-09 2018-05-01 珠海格力电器股份有限公司 Combustor and water heater

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108534139A (en) * 2018-05-15 2018-09-14 芜湖美的厨卫电器制造有限公司 Burner and water heater
CN110748882A (en) * 2018-07-23 2020-02-04 芜湖美的厨卫电器制造有限公司 Combustor and gas heater who has it
CN110440446A (en) * 2019-08-09 2019-11-12 广东万和新电气股份有限公司 A kind of jet tube assembly

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Application publication date: 20171215

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