EP3795901A1 - Gasverteilungsvorrichtung und brennkammer damit sowie wassererhitzer - Google Patents

Gasverteilungsvorrichtung und brennkammer damit sowie wassererhitzer Download PDF

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Publication number
EP3795901A1
EP3795901A1 EP19804056.0A EP19804056A EP3795901A1 EP 3795901 A1 EP3795901 A1 EP 3795901A1 EP 19804056 A EP19804056 A EP 19804056A EP 3795901 A1 EP3795901 A1 EP 3795901A1
Authority
EP
European Patent Office
Prior art keywords
gas
gas distribution
distribution device
pipes
pressure detection
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
EP19804056.0A
Other languages
English (en)
French (fr)
Other versions
EP3795901A4 (de
Inventor
Wenfeng Chen
Xianchao MENG
Guorong LIANG
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.)
Midea Group Co Ltd
Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Original Assignee
Midea Group Co Ltd
Wuhu Midea Kitchen and Bath Appliances Manufacturing 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
Priority claimed from CN201820720557.6U external-priority patent/CN208186352U/zh
Priority claimed from CN201820719386.5U external-priority patent/CN208186412U/zh
Priority claimed from CN201820719372.3U external-priority patent/CN208312386U/zh
Application filed by Midea Group Co Ltd, Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd filed Critical Midea Group Co Ltd
Publication of EP3795901A1 publication Critical patent/EP3795901A1/de
Publication of EP3795901A4 publication Critical patent/EP3795901A4/de
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/002—Gaseous fuel
    • F23K5/007—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/045—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with a plurality of burner bars assembled together, e.g. in a grid-like arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/002—Gaseous fuel
    • F23K5/005—Gaseous fuel from a central source to a plurality of burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
    • F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2208/00—Control devices associated with burners
    • F23D2208/10—Sensing devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/10—Supply line fittings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/10—Supply line fittings
    • F23K2203/105—Flow splitting devices to feed a plurality of burners

Definitions

  • the present invention relates to a field of water heater technology, in particular, to a gas distribution device, and a combustor having the same, and a water heater.
  • a combustors as an important device in a water heater or a wall-mounted furnace, is mainly powered by fuel gas, to provide domestic hot water or heating for users through flame combustion.
  • the heating rate and continuous heating steadiness of a combustor mainly depend on the flame combustion condition of a flame distributor, the flame combustion temperature and flame height of a flame distributor are related directly to the gas supply condition of a gas distribution device.
  • the gas distribution pipes of existing gas distribution devices are independent from each other, and are also supplied with gas through their respective gas supply pipelines, thus, uneven gas supply in gas distribution pipes is prone to occur.
  • the above gas distribution device is relatively large in size, and may occupy spaces in the water heater or the wall-mounted furnace reserved for other components.
  • gas leakage or breakage and the like may easily occur at a position where the gas supply pipeline and the gas distribution pipe connect.
  • embodiments of the present invention provide a gas distribution device, and a combustor having the same, and a water heater.
  • a gas distribution device including: a plurality of gas distribution pipes arranged in parallel and at intervals, each of the gas distribution pipes being provided with a plurality of gas nozzles; and at least one gas delivery pipes communicated with each of the gas distribution pipes, to connect the gas distribution pipes into an integral structure, the gas delivery pipes being used for supplying gas into each of the gas distribution pipes; the gas delivery pipes are provided with a gas delivery interface for connecting a gas inlet valve.
  • the gas distribution device further includes connectors provided on two sides of each of the gas delivery pipes, respectively, to connect end portions of each of the gas distribution pipes at corresponding positions into an integral structure.
  • a mounting platform is provided on the connectors for connecting and fixing a required device.
  • the gas delivery pipes are arranged perpendicular to each of the gas distribution pipes.
  • the gas delivery pipes run through a middle portion of each of the gas distribution pipes.
  • a blocking member is provided at an end portion of each of the gas distribution pipes.
  • the gas distribution pipes are integrally formed with the gas delivery pipes through a die casting process.
  • the gas distribution pipes are provided with a pressure detection port for connecting a pressure detection device, to detect a pressure of gas flowing into the gas distribution pipes.
  • the pressure detection device is detachably connected to the pressure detection port, and the pressure detection port is detachably provided with a sealing cover; the sealing cover is used for sealing the pressure detection port, when the pressure detection device is detached from the pressure detection port.
  • the pressure detection port is integrally arranged on the gas distribution pipes.
  • the gas delivery interface is provided with a fixed mounting seat, a plurality of mounting holes are circumferentially arranged at intervals on the fixed mounting seat, and the mounting holes are adapted to the gas inlet valve.
  • At least one set of first mounting holes are symmetrically arranged along a direction of a first diameter of the gas delivery interface
  • at least one set of second mounting holes are symmetrically arranged along a direction of a second diameter of the gas delivery interface
  • the first diameter is perpendicular to the second diameter
  • At least one set of third mounting holes are symmetrically arranged along a direction of a third diameter of the gas delivery interface, the third diameter being between the first diameter and the second diameter.
  • a hole spacing between a set of the symmetrically-arranged first mounting holes, a hole spacing between a set of the symmetrically-arranged second mounting holes, and a hole spacing between a set of the symmetrically-arranged third mounting holes are greater than an outer diameter of the gas distribution pipes.
  • the fixed mounting seat is integrally arranged with the gas delivery interface.
  • a combustor including the gas distribution device as described in above embodiments.
  • a water heater including the combustor as described in above embodiments.
  • embodiments of the present invention provide a gas distribution device 100 including a plurality of gas distribution pipes 1 and at least one gas delivery pipe 3.
  • the respective gas distribution pipes 1 are in parallel and arranged at intervals.
  • Each of the gas distribution pipes 1 is provided with a plurality of gas nozzles 2.
  • the gas nozzles 2 are used for supplying gas upwards to corresponding ejection pipes of a flame distributor (not shown).
  • the gas delivery pipes 3 are in communication with each of the gas distribution pipes 1.
  • the gas delivery pipes 3 connect respective gas distribution pipes 1 into an integral structure.
  • the gas delivery pipes 3 are used for supplying gas into each of the gas distribution pipes 1.
  • the gas delivery pipes 3 are provided with a gas delivery interface 4 for connecting a valve.
  • the number of gas distribution pipes 1 depends mainly on the number of ejection pipes arranged on the flame distributor, the number of gas distribution pipes 1 required to be deployed is adjusted according to the number of the ejection pipes deployed on the flame distributor.
  • ends, on the same side of the gas delivery pipes 3, of the gas distribution pipes 1 may be connected into an integral structure through connectors 5, so that the connectors 5, the gas distribution pipes 1 and the gas delivery pipes 3 form a grid structure together.
  • a mounting platform 51 may be provided on the connectors 5, to facilitate a fixation of the gas distribution device 100 with other devices required.
  • three gas distribution pipes 1 are provided, the three gas distribution pipes 1 are arranged in parallel and at intervals.
  • the gas delivery pipes 3 are arranged perpendicular to middle portions of the three gas distribution pipes 1, and the gas delivery pipes 3 run through a middle portion of each of the gas distribution pipes, and are communicated with each of the gas distribution pipes 1.
  • the ends, on one side of the gas delivery pipes 3, of the gas distribution pipes 1 are connected into an integral structure through one connector 5, and the ends, on the other side of the gas delivery pipes 3, of the gas distribution pipes 1 are connected into an integral structure through another connector 5.
  • Three gas distribution pipes 1 together with one gas delivery pipe 3 and two connectors 5 form a crisscross frame-shaped grid structure.
  • the gas delivery pipe 3 Since the gas delivery pipe 3, the gas distribution pipes 1 and the connectors 5 are in the same plane, the space occupied by the gas distribution device 100 is effectively saved. Meanwhile, since the gas delivery pipe 3 is integrally connected to middle portions of the three gas distribution pipes 1, the same amount of gas may be synchronously delivered to each of the gas distribution pipes 1.
  • the gas delivery pipes 3 are preferably arranged perpendicular to each of the gas distribution pipes 1.
  • the communication of the gas delivery pipes 3 with the gas distribution pipes 1 may be understood as a direct spatial communication between the two, or as a gas flow communication between the two.
  • the gas delivery pipe 3 may run through sequentially, and communicate the middle portions of the gas distribution pipes 1, so that an interior of each of the gas distribution pipes 1 is communicated with the interior of the gas delivery pipe 3, thereby forming a gas delivery passage.
  • each of the gas distribution pipes 1 run through the gas delivery pipe 3, so that the interior of each of the gas distribution pipes 1 is communicated with the interior of the gas delivery pipe 3, thereby forming a gas delivery passage.
  • the gas delivery pipe 3 when the communication of the gas delivery pipe 3 with the gas distribution pipes 1 is a gas flow communication, the gas delivery pipe 3 may be arranged on one side (e.g., above, or below) of the plane where the gas distribution pipes 1 are located, and be communicated with the middle portion of the each of the gas distribution pipes 1. That is, a pipe wall of the gas delivery pipe 3 is directly communicated with a joint of the pipe wall at the middle portion of each of the gas distribution pipes 1, so that gas in the gas delivery pipe 3 may flow into each of the gas distribution pipes 1 through the communication position.
  • the position where the gas delivery pipe 3 and the gas distribution pipes 1 are connected may be adaptively adjusted according to operation requirements, the gas delivery pipe 3 is not necessarily to communicate with the gas distribution pipes 1 only at the middle portion, instead, the gas delivery pipe 3 may also communicate with the gas distribution pipes 1 at any positions thereon.
  • the specific arrangement manner including, but not limited to, connections and deployments
  • the specific arrangement manner may be the same as the arrangement manner of the gas delivery pipe 3 described in above embodiments, and thus it is not repeated herein in detail, it may be implemented with reference to above embodiments.
  • a blocking member 6 may be provided at an end of each gas distribution pipe 1.
  • the blocking member 6 employs a structure of a sealing cap or a sealing plug structure inserted at a port of the gas distribution pipes 1.
  • the gas distribution pipes 1 are integrally formed with the gas delivery pipes 3 through a die casting process, to form an integral structure.
  • the strength of the overall structure of the gas distribution device 100 may be improved, while the manufacturing process is simple.
  • the integrally formed gas distribution device 100 has better gas tightness, free of gas leakage, thereby improving safety.
  • the gas distribution device 1 is provided with a pressure detection port 11.
  • the pressure detection port 11 is used for connecting with a pressure detection device.
  • the pressure detection device may be used not only for detecting the pressure of gas flowing into the gas distribution pipes 1, but also for detecting the pressure of gas in the gas distribution pipe 1 before it is ejected through the gas nozzles 2. Since gas will experience pressure loss when entering the gas distribution device 100 (for example, the pressure loss occurring when the gas delivery pipe 3 supplies gas into the gas distribution pipes 1), the pressure and the flow rate of gas ejected from the gas nozzle 2 may be regulated by detecting the pressure of gas in the gas distribution pipe 1 before it enters into the gas nozzle 2. For example, the size of the diameter of the gas nozzles 2 or the magnitude of the gas pressure in the gas distribution pipes 1 is regulated.
  • the pressure detection port 11 may be provided at any position of the gas distribution pipes 1, it may be selected according to requirements and manufacturing processes. For example, it may be provided at both ends, at the middle portion, or in the vicinity of any of the gas nozzles 2 of the gas distribution pipes 1.
  • the number of the pressure detection ports 11 may also be adaptively adjusted according to operation requirements or structures of the gas distribution device 100. For example, in the case that the interiors of the gas distribution pipes 1 communicate with each other, it may be possible to provide a pressure detection port 11 on only one of the gas distribution pipes 1.
  • the interiors of the gas distribution pipes 1 are not communicated with each other, instead, they are independent from each other, it is also possible to provide a pressure detection port lion each of the gas distribution pipes 1, so that the gas pressure loss in each of the gas distribution pipes 1 is monitored.
  • a pressure detection device is provided detachably on the pressure detection port 11.
  • a sealing cover 12 for sealing the pressure detection port 11 is detachably provided on the pressure detection port 11.
  • the sealing cover 12 is arranged on the pressure detection port 11, and when the pressure in the gas distribution pipes 1 is required to be detected, the sealing cover 12 is detached and the pressure detection device is installed, so that the pressure loss of the gas flowing into the gas distribution pipes 1 is detected.
  • sealing cover 12 Any sealing means in the existing technology may be employed as the sealing cover 12.
  • a sealing plug or a sealing cap may be employed as the sealing cover 12.
  • Bolts and gaskets may also be used to seal the pressure detection port 11.
  • the specific manner for sealing the pressure detection port 11 may be selected as desired, which is not limited to embodiments described herein, as long as a complete seal may be achieved when the pressure detection device is detached from the pressure detection port 11.
  • the pressure detection port 11 may be integrally formed and die-casted on the gas distribution pipes 1.
  • the gas delivery interface 4 is provided with a fixed mounting seat 41.
  • a plurality of mounting holes 42 are circumferentially arranged at intervals on the fixed mounting seat 41, and each mounting hole 42 is adapted to a gas inlet valve (to be described later).
  • a corresponding number of mounting holes 42 at corresponding positions may be selected from the fixed mounting holes 42 for connection according to requirements, to meet the connection and installation requirements of various models and types of valves.
  • the valve may be any valve known in the existing technology.
  • the valve may be an electronic thermostatic valve (as shown in FIG. 6 ), a mechanical thermostatic valve (as shown in FIG. 7 ), or a water-gas linkage valve (as shown in FIG. 8 ).
  • assembly holes 71 are provided on the diagonal line of the electronic thermostatic valve interface 7, respectively, to connect with four mounting holes 42 at corresponding positions, so that the gas delivery interface 4 is connected with the electronic thermostatic valve.
  • two mounting holes 42 on the fixed mounting seat 41 are required.
  • Two assembly holes 81 are symmetrically provided on the mechanical thermostatic valve interface 8, to connect with two mounting holes 42 at corresponding positions, so that the gas delivery interface 4 is connected with the mechanical thermostatic valve.
  • the mounting holes 42 may include at least one set of first mounting holes 4201, which are symmetrically arranged on the fixed mounting seat 41 along a direction of a first diameter 43 of the gas delivery interface 4, and at least one set of second mounting holes 4202, which are symmetrically arranged along a direction of a second diameter 44 of the gas delivery interface 4.
  • the first diameter 43 is perpendicular to the second diameter 44.
  • the arrangement manner of the first mounting holes 4201 and the second mounting holes 4202 on the fixed mounting seat 41 in the present embodiment may at least meet the mounting requirements of a valve requiring two or four mounting holes. For example, it is an electronic thermostatic valve, a mechanical thermostatic valve, or a water-gas linkage valve.
  • the mounting holes 42 include at least one set of first mounting holes 4201 symmetrically arranged along a direction of the first diameter 43 of the gas delivery interface 4, at least one second set of mounting holes 4202 symmetrically arranged along a direction of the second diameter 44 of the gas delivery interface 4, and at least one set of third mounting holes 4203 symmetrically arranged along a direction of the third diameter 45 of the gas delivery interface 4.
  • the first diameter 43 is perpendicular to the second diameter 44.
  • the third diameter 45 is located between the first diameter 43 and the second diameter 44.
  • the arrangement manner of the first mounting holes 4201, the second mounting holes 4202, and the third mounting hole 4203 on the fixed mounting seat 41 in the present embodiment may at least meet the mounting requirements of a valve requiring six or less mounting holes.
  • a valve requiring six or less mounting holes.
  • it is an electronic thermostatic valve, a mechanical thermostatic valve, or a water-gas linkage valve.
  • the arrangement manner and number of the mounting holes 42 may be adaptively adjusted depending on various shapes and sizes of the fixed mounting seat 41, and is not limited to the number and arrangement manner of the mounting holes 42 described in above embodiments. With respect to the arrangement manner and number of mounting holes 42, the types of valve to be connected should also be considered.
  • a hole spacing between two mounting holes symmetrically disposed, such as the hole spacing between the first mounting holes 4201, between the second mounting holes 4202, or between the two third mounting holes 4203 is at least greater than an outer diameter of the gas distribution pipes 1.
  • the fixed mounting seat 41 may be die-cast integrally with the gas delivery interface 4, to simplify the process and ensure strength and gas tightness of the gas delivery interface 4.
  • part of or all of the mounting holes 42 may be set as threaded holes, to facilitate a firm connection with the valve.
  • Another embodiment of the present invention provides a combustor including the gas distribution device 100 according to any of the embodiments described above.
  • Another embodiment of the present invention provides a water heater including the above-described combustor.
  • Another embodiment of the present invention provides a wall-mounted furnace including the above-described combustor.
  • orientations or position relationships indicated by terms “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential” and the like are based on the orientations or position relationships shown in the drawings for ease of description and simplicity of description only, and are not intended to indicate or imply that the device or assembly referred to must have a particular orientation, or be constructed and operated in a particular orientation. It is therefore not to be construed as limiting the present invention.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined with “first” and “second” may explicitly or implicitly include one or more such features.
  • a plurality of means two or more, unless specifically defined otherwise.
  • the terms “mounted”, “coupled”, “connected”, “fixed”, and the like are to be construed broadly, for example, as fixed or detachable connections, or as a single unit, unless expressly stated and defined otherwise. It can be a mechanical connection, an electrical connection, or a communication; it may be a direct connection or an indirect connection through an intermediary, or two components may be interconnected inside or in an interactive relationship with each other.
  • the specific meaning of the terms in the present invention will be understood by those of ordinary skill in the art, as the case may be.
  • reference to a first feature as being “above” or “below” a second feature may include reference to the first and second features being in direct contact, and reference to the first and second features not being in direct contact but being in contact by additional features therebetween.
  • the first feature being “above”, “over” and “on” the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature.
  • the first feature being “below”, “underneath” and “under” the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

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  • 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)
  • Feeding And Controlling Fuel (AREA)
EP19804056.0A 2018-05-15 2019-05-15 Gasverteilungsvorrichtung und brennkammer damit sowie wassererhitzer Pending EP3795901A4 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201820720557.6U CN208186352U (zh) 2018-05-15 2018-05-15 分气装置及具有其的燃烧器和热水器
CN201820719386.5U CN208186412U (zh) 2018-05-15 2018-05-15 分气装置及具有其的燃烧器和热水器
CN201820719372.3U CN208312386U (zh) 2018-05-15 2018-05-15 分气装置及具有其的燃烧器和热水器
PCT/CN2019/087079 WO2019219030A1 (zh) 2018-05-15 2019-05-15 分气装置及具有其的燃烧器和热水器

Publications (2)

Publication Number Publication Date
EP3795901A1 true EP3795901A1 (de) 2021-03-24
EP3795901A4 EP3795901A4 (de) 2022-03-02

Family

ID=68539467

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19804056.0A Pending EP3795901A4 (de) 2018-05-15 2019-05-15 Gasverteilungsvorrichtung und brennkammer damit sowie wassererhitzer

Country Status (2)

Country Link
EP (1) EP3795901A4 (de)
WO (1) WO2019219030A1 (de)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB103579A (en) * 1916-04-25 1917-02-01 Waller P Tinsley Improvements in or relating to Gas Burners for Smelting and Heating Purposes.
US3099312A (en) * 1958-07-07 1963-07-30 Ascot Gas Water Heaters Ltd Gaseous fuel burners
JPH1190623A (ja) * 1997-09-16 1999-04-06 Showa Alum Corp トーチろう付け装置
CN106642121A (zh) * 2016-12-31 2017-05-10 珠海吉泰克燃气设备技术有限公司 一种低氮燃烧器喷嘴支架
CN206582894U (zh) * 2017-01-27 2017-10-24 黄婉平 一种燃烧器的燃气分气装置
CN206803164U (zh) * 2017-04-21 2017-12-26 广东零壹电器科技有限公司 一种新型降噪燃气分配器
CN206846783U (zh) * 2017-05-10 2018-01-05 芜湖美的厨卫电器制造有限公司 分气杆组件与燃气热水器
CN208186412U (zh) * 2018-05-15 2018-12-04 芜湖美的厨卫电器制造有限公司 分气装置及具有其的燃烧器和热水器
CN208312386U (zh) * 2018-05-15 2019-01-01 芜湖美的厨卫电器制造有限公司 分气装置及具有其的燃烧器和热水器
CN208186352U (zh) * 2018-05-15 2018-12-04 芜湖美的厨卫电器制造有限公司 分气装置及具有其的燃烧器和热水器

Also Published As

Publication number Publication date
WO2019219030A1 (zh) 2019-11-21
EP3795901A4 (de) 2022-03-02

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Ipc: F23N 1/00 20060101ALI20220127BHEP

Ipc: F23D 14/58 20060101ALI20220127BHEP

Ipc: F23D 14/84 20060101AFI20220127BHEP