CN108302767A - The heat-exchanger rig and gas heater of gas heater - Google Patents
The heat-exchanger rig and gas heater of gas heater Download PDFInfo
- Publication number
- CN108302767A CN108302767A CN201711377597.1A CN201711377597A CN108302767A CN 108302767 A CN108302767 A CN 108302767A CN 201711377597 A CN201711377597 A CN 201711377597A CN 108302767 A CN108302767 A CN 108302767A
- Authority
- CN
- China
- Prior art keywords
- heat
- pipeline
- burner
- gas heater
- exchanger plates
- 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.)
- Granted
Links
- 239000007789 gas Substances 0.000 claims abstract description 43
- 239000002737 fuel gas Substances 0.000 claims abstract description 32
- 238000003491 array Methods 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 20
- 238000009792 diffusion process Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000007747 plating Methods 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 5
- 229920000914 Metallic fiber Polymers 0.000 claims description 3
- 206010028980 Neoplasm Diseases 0.000 claims description 3
- 229910052878 cordierite Inorganic materials 0.000 claims description 3
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 241000276425 Xiphophorus maculatus Species 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 230000005855 radiation Effects 0.000 abstract description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 5
- 239000003546 flue gas Substances 0.000 abstract description 4
- 239000000779 smoke Substances 0.000 abstract description 4
- 230000000630 rising effect Effects 0.000 abstract description 3
- 239000000567 combustion gas Substances 0.000 description 14
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Classifications
-
- 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
- F24H9/0005—Details for water heaters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
The invention discloses a kind of heat-exchanger rig of gas heater and gas heater, including the heat exchanger plates of several vertical arrays setting, several burner platforms, inlet pipeline, outlet pipeline and the fuel gas pipeline that are staggered between heat exchanger plates；Several heat exchanger plates are connected to inlet pipeline and outlet pipeline；Several burner platforms are communicated with fuel gas pipeline.The heat that burner platform generates passes to adjacent heat exchanger plates by way of heat radiation, any other heat transfer medium is not present in centre so that the heat transfer efficiency between burner platform and heat exchanger plates is high；The vertically disposed set-up mode of burner platform meets the principle of hot-air rising, the flue gas vertical ascent that burner platform generates, conducive to smoke evacuation, the heat exchange efficiency of burner platform and heat exchanger plates can be improved, solves the low technical problem of existing gas heater heat exchange efficiency.
Description
Technical field
The invention belongs to gas heater technical fields, specifically, being to be related to a kind of heat-exchanger rig of gas heater
And gas heater.
Background technology
Gas heater refers to, by combustion heating mode, being transferred heat to using combustion gas as fuel and flowing through heat exchange
In the cold water of device, to reach a kind of gas appliance for preparing hot water purpose.
Current gas heater mainly uses atmospheric burning type mode, and in the combustion chamber, burner nozzle sprays combustion gas
It burns, the water by way of radiation, convection current and in heat exchanger exchanges heat, and energy loss is big, and the thermal efficiency is low.
Invention content
This application provides a kind of heat-exchanger rig of gas heater and gas heaters, solve existing gas heater
The low technical problem of heat exchange efficiency.
In order to solve the above technical problems, the application is achieved using following technical scheme：
It proposes a kind of heat-exchanger rig of gas heater, including the heat exchanger plates of several vertical arrays setting, is staggered in heat exchange
Several burner platforms, inlet pipeline, outlet pipeline and fuel gas pipeline between plate；Several heat exchanger plates with the water inlet pipe
Road is connected to the outlet pipeline；Several burner platforms are communicated with the fuel gas pipeline.
Further, the burner platform includes that offer open burner shell, the metal of the covering opening more
Hole dielectric-slab and the fins being set in the burner casing body；The burner shell offers inlet pipeline through-hole and water outlet
Tubing through holes；Wherein, the inlet pipeline through-hole is used for through the inlet pipeline, and the outlet pipeline through-hole is for passing through institute
State outlet pipeline.
Further, the burner shell is further opened with the diffusion hole communicated with the fuel gas pipeline；The diffusion hole
Entrance be circular configuration, the outlet in the diffusion hole is ellipsoidal structure；The discharge area in the diffusion hole is more than the expansion
Press the inlet area in hole.
Further, the fuel gas pipeline entrance is connected with the ejector pipe for injection air.
Further, between the fuel gas pipeline and each layer of burner platform electric control valve is provided on connecting line.
Further, the metal porous dielectric-slab is made of metal porous medium, metallic fiber plate or cordierite.
Further, setpoint distance is kept between the heat exchanger plates and the burner platform.
Further, the heat exchanger plates are hollow metal plate-like structure.
Further, the surface layer of the heat exchanger plates is herringbone corrugated plating, horizontal straight corrugated plating or tumor shape plate.
It proposes a kind of gas heater, includes the heat-exchanger rig of above-mentioned gas heater.
Compared with prior art, the advantages of the application and good effect is：The heat exchange for the gas heater that the application proposes
In device and gas heater, several heat exchanger plates vertical array settings, several burner platforms are staggered between heat exchanger plates, change
Hot plate is connected to inlet pipeline and outlet pipeline, and burner platform is connected to fuel gas pipeline；The heat that burner platform generates is logical
The mode for crossing heat radiation passes to adjacent heat exchanger plates, any other heat transfer medium is not present in centre so that burner platform and changes
Heat transfer efficiency between hot plate is high；The vertically disposed set-up mode of burner platform meets the principle of hot-air rising, burner platform
The flue gas vertical ascent of generation is conducive to smoke evacuation, can improve the heat exchange efficiency of burner platform and heat exchanger plates, solve existing combustion
The low technical problem of gas water-heater heat-exchanging efficiency, and the modularized design of burner platform and heat exchanger plates, can be according to water heater
Actual design is optionally combined design.
In the embodiment of the present application, diffusion hole is offered in the fuel gas inlet of burner platform, in conjunction with what is be arranged in burner platform
Fins can improve gaseous-pressure, increase the ability that combustion gas enters metal porous dielectric-slab so that fuel gas buring is abundant；Combustion gas
In injection of the entrance through ejector pipe of fuel gas pipeline so that the air capacity for entering burning pipeline is big, does not need auxiliary air
Realize fully burning；It is provided with electric control valve, Ke Yishi on the pipeline connected between fuel gas pipeline and each layer of burner platform
Existing water heater increases the power regulation in range；Each contribute to the heat exchange efficiency of gas heater.
After the detailed description of the application embodiment is read in conjunction with the figure, other features and advantages of the application will become more
Add clear.
Description of the drawings
Fig. 1 is the composed structure schematic diagram of the heat-exchanger rig for the gas heater that the application proposes；
Fig. 2 is the composition mechanism schematic diagram for the burner platform that the application proposes；
Fig. 3 is the structural schematic diagram for the heat exchanger plates that the application proposes；
Fig. 4 is the structural schematic diagram for the fuel gas pipeline that the application proposes.
Specific implementation mode
The specific implementation mode of the application is described in more detail below in conjunction with the accompanying drawings.
The heat-exchanger rig for the gas heater that the application proposes, as shown in Figure 1, including the heat exchange of several vertical arrays setting
Plate 11, several burner platforms 12 being staggered between heat exchanger plates 11, inlet pipeline 13, outlet pipeline 14 and fuel gas pipeline
15；Several heat exchanger plates 11 are connected to inlet pipeline 13 and outlet pipeline 14；Several burner platforms 12 with 15 phase of fuel gas pipeline
It is logical.
Above-mentioned as it can be seen that several heat exchanger plates vertical arrays are arranged, several burner platforms are staggered between heat exchanger plates, burn
The heat that device plate generates passes to adjacent heat exchanger plates by way of heat radiation, any other heat transfer medium is not present in centre,
So that the heat transfer efficiency between burner platform and heat exchanger plates is high；And the vertically disposed set-up mode of burner platform meets on hot-air
The principle risen, the flue gas vertical ascent that burner platform generates are conducive to smoke evacuation, and the heat exchange that can improve burner platform and heat exchanger plates is imitated
Rate, to solve the low technical problem of existing gas heater heat exchange efficiency.
And in the embodiment of the present application, the modularized design of burner platform and heat exchanger plates being capable of actually setting according to water heater
Meter is optionally combined design so that the application range of the heat-exchanger rig for the gas heater that the application proposes is more extensive.
As shown in Fig. 2, the burner platform 12 that the application proposes is including offering open burner shell 121, covering opens
The metal porous dielectric-slab 122 of mouth and the fins 123 being set in burner casing body；Burner shell 121 offers water inlet pipe
Road through-hole 124 and outlet pipeline through-hole 125, inlet pipeline through-hole 124 are used for through inlet pipeline 13, outlet pipeline through-hole 125
For passing through outlet pipeline 14；Inlet through hole 124 and water outlet through-hole 125 are opened in the both ends of burner platform 12 respectively.
The diffusion hole 126 communicated with fuel gas pipeline 15 is further opened in the side of burner shell 12；Diffusion hole 126 enters
Mouthful it is circular configuration, exports as ellipsoidal structure, and discharge area is more than inlet area.
Metal porous dielectric-slab 122 is fuel gas buring reactive site, and combustion gas is under the effect of the catalyst in metal porous Jie
Completely burned in matter, surface flames of anger appearance and tempering-free phenomenon, fuel gas buring is abundant, does not generate harmful gas such as carbon monoxide
Body.Setpoint distance distance between metal porous dielectric-slab 122 and adjacent heat exchanger plates 11 is smaller, and the heat for generation of burning is main
Heat exchanger plates are passed to by way of heat radiation, other heat transfer mediums are not present in centre, and heat transfer efficiency is high.Metal porous dielectric-slab
122 materials used is metal porous media, but it includes but not limited to the materials systems such as metallic fiber, cordierite that can also use
Make.Metal porous dielectric-slab 122 is fixed in the opening of burner shell 121, and bottom is supported by fins 123.
Fins 123 are uniformly distributed in inside burner shell 121, and the combustion gas come in from fuel gas pipeline 15 passes through diffusion first
Hole 126 exports as area compared to round big ellipse so that combustion gas passes through diffusion hole since 126 entrance of diffusion hole is circle
Combustion gas speed is reduced because flow area amplifies suddenly, gaseous-pressure increases, and to increase combustion gas, to enter metal more after 126
The ability of hole dielectric-slab 121, and in diffusion hole 126, outlet is equipped with uniformly distributed fins 123, so that combustion gas is uniformly reached metal porous
Dielectric-slab 121, fuel gas buring is more abundant, places metal porous dielectric-slab 121 and the problem of fire, tempering partially occurs.
As shown in Figure 1 and Figure 4, the ejector pipe 151 for injection air, combustion gas are connected in the inlet of fuel gas pipeline 15
First by the ejector action of ejector pipe 151, quantitative primary air is brought into, and be fully pre-mixed in fuel gas pipeline, this draws
It is sufficiently large to penetrate the primary air amount that 151 injection of pipe enters, therefore auxiliary air air inlet need not be separately provided in burner platform 12
Mouthful, fuel gas buring is efficient.
As shown in figure 4, being provided with electric control valve on connecting line between fuel gas pipeline 15 and each layer of burner platform 12
152, these electric control valves 152 can respectively control burner platform gas quantity, to realize that it is larger that water heater possesses
Power regulating range, the problem for effectively avoiding hot water very few or excessive, play save the energy technique effect.
As shown in figure 3, the heat exchanger plates 11 that the application proposes are hollow metal plate-like structure, the surface layer of heat exchanger plates is herringbone
Shape corrugated plating, horizontal straight corrugated plating or tumor shape sheet structure, for increasing heat exchange area；The material of heat exchanger plates 11 include but
It is not only restricted to copper, alloy etc.；Heat exchanger plates are connected to by via 110 with oral siphon road 13 with outlet pipeline 14, and oral siphon road 13 is logical
The water for entering certain pressure, the forced flow in heat exchanger plates hollow structure inside exchange heat with adjacent burners plate, pass through water outlet respectively
Pipeline 14 flows into user side.
Based on the heat-exchanger rig of gas heater set forth above, the application also protects a kind of gas heater, using having
The heat-exchanger rig of above-mentioned gas heater.In heat-exchanger rig, several heat exchanger plates vertical array settings, several burner platforms interlock
It is set between heat exchanger plates, the heat that burner platform generates passes to adjacent heat exchanger plates by way of heat radiation, and centre is not
There are any other heat transfer mediums so that the heat transfer efficiency between burner platform and heat exchanger plates is high；Burner platform is vertically disposed
Set-up mode meets the principle of hot-air rising, and the flue gas vertical ascent that burner platform generates is conducive to smoke evacuation, can improve burning
The heat exchange efficiency of device plate and heat exchanger plates solves the low technical problem of existing gas heater heat exchange efficiency, and burner platform
With the modularized design of heat exchanger plates, design can be optionally combined according to the actual design of water heater.
Diffusion hole is offered in the fuel gas inlet of burner platform, in conjunction with the fins being arranged in burner platform, combustion can be improved
Atmospheric pressure increases the ability that combustion gas enters metal porous dielectric-slab so that fuel gas buring is abundant；Entrance of the combustion gas in fuel gas pipeline
Injection through ejector pipe so that the air capacity for entering burning pipeline is big, does not need auxiliary air and abundant burning can be realized；Combustion gas
It is provided with electric control valve on the pipeline connected between pipeline and each layer of burner platform, water heater may be implemented and increase in range
Power regulation；Each contribute to the heat exchange efficiency of gas heater.
It should be noted that it is limitation of the present invention that above description, which is not, the present invention is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the present invention, are also answered
It belongs to the scope of protection of the present invention.
Claims (10)
1. the heat-exchanger rig of gas heater, which is characterized in that including several vertical arrays setting heat exchanger plates, be staggered in
Several burner platforms, inlet pipeline, outlet pipeline and fuel gas pipeline between heat exchanger plates；
Several heat exchanger plates are connected to the inlet pipeline and the outlet pipeline；Several burner platforms with it is described
Fuel gas pipeline communicates.
2. the heat-exchanger rig of gas heater according to claim 1, which is characterized in that the burner platform includes opening up
There is open burner shell, cover the metal porous dielectric-slab of the opening and be set to sticking up in the burner casing body
Piece；
The burner shell offers inlet pipeline through-hole and outlet pipeline through-hole；
Wherein, the inlet pipeline through-hole is used for through the inlet pipeline, and the outlet pipeline through-hole is used to go out described in
Water lines.
3. the heat-exchanger rig of gas heater according to claim 2, which is characterized in that the burner shell also opens up
There is the diffusion hole communicated with the fuel gas pipeline；
The entrance in the diffusion hole is circular configuration, and the outlet in the diffusion hole is ellipsoidal structure；The outlet in the diffusion hole
Area is more than the inlet area in the diffusion hole.
4. the heat-exchanger rig of gas heater according to claim 1, which is characterized in that the fuel gas pipeline entrance connection
It is useful for the ejector pipe of injection air.
5. the heat-exchanger rig of gas heater according to claim 1, which is characterized in that the fuel gas pipeline and each layer
Electric control valve is provided between burner platform on connecting line.
6. the heat-exchanger rig of gas heater according to claim 2, which is characterized in that the metal porous dielectric-slab is adopted
It is made of metal porous medium, metallic fiber plate or cordierite.
7. the heat-exchanger rig of gas heater according to claim 1, which is characterized in that the heat exchanger plates and the burning
Setpoint distance is kept between device plate.
8. the heat-exchanger rig of gas heater according to claim 1, which is characterized in that the heat exchanger plates are hollow gold
Belong to platy structure.
9. the heat-exchanger rig of gas heater according to claim 8, which is characterized in that behave on the surface layer of the heat exchanger plates
Font corrugated plating, horizontal straight corrugated plating or tumor shape plate.
10. gas heater, which is characterized in that include that the heat exchange of claim 1-9 any one of them gas heaters such as fills
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711377597.1A CN108302767B (en) | 2017-12-19 | 2017-12-19 | Heat exchange device of gas water heater and gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711377597.1A CN108302767B (en) | 2017-12-19 | 2017-12-19 | Heat exchange device of gas water heater and gas water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108302767A true CN108302767A (en) | 2018-07-20 |
| CN108302767B CN108302767B (en) | 2021-05-25 |
Family
ID=62870237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711377597.1A Active CN108302767B (en) | 2017-12-19 | 2017-12-19 | Heat exchange device of gas water heater and gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108302767B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692754A (en) * | 2019-03-14 | 2020-09-22 | 芜湖美的厨卫电器制造有限公司 | Combustion heat exchange assembly and gas water heater with same |
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|---|---|---|---|---|
| CN2613687Y (en) * | 2003-01-06 | 2004-04-28 | 凤城市大方能源技术有限责任公司 | Horizontal multi-layer combustion chamber heat-pipe type water-boiling boiler |
| CN1720414A (en) * | 2002-10-01 | 2006-01-11 | 动力技术工业有限公司 | Multiple plate combustor |
| CN2851870Y (en) * | 2005-06-23 | 2006-12-27 | 罗添翼 | Infrared metal honeycomb burner used on gas appliance |
| CN101358771A (en) * | 2008-09-08 | 2009-02-04 | 中山华帝燃具股份有限公司 | Plate heat exchanger for condensing gas water heater |
| US20090226854A1 (en) * | 2008-03-04 | 2009-09-10 | Rinnai Corporation | Combustion apparatus |
| CN103105090A (en) * | 2013-01-25 | 2013-05-15 | 胡桂林 | Heat exchange plate set and plate type heat exchanger |
| CN104296367A (en) * | 2014-09-29 | 2015-01-21 | 陈亚景 | Infrared gas water heater |
-
2017
- 2017-12-19 CN CN201711377597.1A patent/CN108302767B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1720414A (en) * | 2002-10-01 | 2006-01-11 | 动力技术工业有限公司 | Multiple plate combustor |
| CN2613687Y (en) * | 2003-01-06 | 2004-04-28 | 凤城市大方能源技术有限责任公司 | Horizontal multi-layer combustion chamber heat-pipe type water-boiling boiler |
| CN2851870Y (en) * | 2005-06-23 | 2006-12-27 | 罗添翼 | Infrared metal honeycomb burner used on gas appliance |
| US20090226854A1 (en) * | 2008-03-04 | 2009-09-10 | Rinnai Corporation | Combustion apparatus |
| CN101358771A (en) * | 2008-09-08 | 2009-02-04 | 中山华帝燃具股份有限公司 | Plate heat exchanger for condensing gas water heater |
| CN103105090A (en) * | 2013-01-25 | 2013-05-15 | 胡桂林 | Heat exchange plate set and plate type heat exchanger |
| CN104296367A (en) * | 2014-09-29 | 2015-01-21 | 陈亚景 | Infrared gas water heater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692754A (en) * | 2019-03-14 | 2020-09-22 | 芜湖美的厨卫电器制造有限公司 | Combustion heat exchange assembly and gas water heater with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108302767B (en) | 2021-05-25 |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210422 Address after: 266101 No. 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant after: QINGDAO HAIER SMART TECHNOLOGY R&D Co.,Ltd. Applicant after: Haier Smart Home Co., Ltd. Address before: 266101 No. 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER SMART TECHNOLOGY R&D Co.,Ltd. |
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