CN106322749B - Electric water heater - Google Patents
Electric water heater Download PDFInfo
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- CN106322749B CN106322749B CN201510378456.6A CN201510378456A CN106322749B CN 106322749 B CN106322749 B CN 106322749B CN 201510378456 A CN201510378456 A CN 201510378456A CN 106322749 B CN106322749 B CN 106322749B
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- Prior art keywords
- electrode
- built
- heating tube
- electric heating
- electric heater
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 25
- 238000005485 electric heating Methods 0.000 claims abstract description 47
- 239000013642 negative control Substances 0.000 claims description 8
- 239000013641 positive control Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000003287 bathing Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 229910001425 magnesium ion Inorganic materials 0.000 description 4
- 229910006367 Si—P Inorganic materials 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 3
- 239000001095 magnesium carbonate Substances 0.000 description 3
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 3
- 239000000347 magnesium hydroxide Substances 0.000 description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 210000000232 gallbladder Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
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Abstract
The invention discloses an electric water heater, and relates to the technical field of electric water heaters. The electric water heater comprises an inner container, an electric heating pipe, a flange plate used for installing the electric heating pipe and a built-in electrode, wherein the built-in electrode is installed inside the inner container and is close to the electric heating pipe. The electric water heater of the invention adopts the built-in electrode to remove water scale, greatly improves the descaling effect of the electric water heater, reduces the hardness of water and improves the bathing water quality.
Description
Technical field
The present invention relates to electric heater technical field more particularly to a kind of electric heaters with descaling function.
Background technique
After a period of use, the surface of heating tube is easy to produce scale to electric heater in liner, passes so as to cause heat
Efficiency decline, substantially reduces the service life of heating tube.
Currently, avoiding there are mainly two types of the methods of heating tube of electric heater fouling: a kind of method is applied in heating pipe surface
Hydrophobic material is covered, scale attachment is reduced；Another method is to add Si-P crystal medicinal cupping or filter core in water inlet pipe entrance, reduces calcium
The reactivity of magnesium ion, to achieve the purpose that scale inhibition.Wherein, the method for heating pipe surface coating hydrophobic material can only be reduced
Heating tube fouling can not reduce the hardness of water and improve water quality.Si-P crystal is owned by France in chemical method, in water additional addition chemistry
Substance not only will affect health, but also Si-P crystal medicinal cupping or filter core are difficult to integrate with electric heater, need additionally to install,
Occupied space and unsightly.
Summary of the invention
It is an object of the invention to propose a kind of electric heater, which can effectively avoid heating pipe surface from generating
Scale, scale removal work well, and substantially improve bathing water quality.
To achieve this purpose, the present invention adopts the following technical scheme:
The present invention provides a kind of electric heater, including liner, electric heating tube and ring flange for installing electric heating tube,
It further include built-in electrode, the built-in electrode is mounted on the inside of liner, and is arranged close to electric heating tube.
As a kind of preferred embodiment of electric heater, the electric heater further includes the positive electrode and negative electrode of built-in electrode
Between the positive and negative control circuit exchanged for controlling each electrode positive and negative electrode polarity that connects, the positive and negative control circuit and control
Panel connection processed.
As a kind of preferred embodiment of electric heater, the built-in electrode include connect to power supply and be arranged it is cylindrical just
Electrode layer and cylindrical positive electrode layer, the cylinder positive electrode layer and cylindrical positive electrode layer be all made of active carbon fiber felt or
Active carbon cloth and non-woven fabrics alternative stacked are wound.
As a kind of preferred embodiment of electric heater, the built-in electrode is mounted on ring flange, the built-in electrode packet
It is rolled in the outside of electric heating tube or the inside positioned at electric heating tube.
As a kind of preferred embodiment of electric heater, the built-in electrode is mounted on the bottom of liner, the built-in electrode
The fire end of close electric heating tube is simultaneously arranged perpendicular to electric heating tube.
As a kind of preferred embodiment of electric heater, the built-in electrode include sheet positive electrode and with sheet positive electrode just
To the sheet-like negative electrode of setting, the sheet positive electrode and sheet-like negative electrode are parallel to electric heating tube setting.
As a kind of preferred embodiment of electric heater, the built-in electrode is mounted on ring flange, the sheet positive electrode
With the upper and lower sides for being located at electric heating tube with sheet positive electrode or positioned at the inside of electric heating tube.
As a kind of preferred embodiment of electric heater, it is resistance to that the sheet positive electrode and sheet-like negative electrode are all made of surface coating
The titanium net of corrosion resistant coating is made.
The invention has the benefit that
The present invention provides a kind of electric heater, the electric heater of the application removes scale removal using built-in electrode, mentions significantly
The high scale removal effect of electric heater, reduces the hardness of water, improves bathing water quality.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, institute in being described below to the embodiment of the present invention
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also implement according to the present invention
The content of example and these attached drawings obtain other attached drawings.
Fig. 1 is the assembly structure figure for the electric heater built-in electrode that the embodiment of the present invention one provides；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the left view of Fig. 1；
Fig. 4 is the assembly structure figure of electric heater built-in electrode provided by Embodiment 2 of the present invention；
Fig. 5 is the top view of Fig. 4；
Fig. 6 is the left view of Fig. 4；
Fig. 7 is the assembly structure figure for the electric heater built-in electrode that the embodiment of the present invention three provides；
Fig. 8 is the assembly structure figure for the electric heater built-in electrode that the embodiment of the present invention four provides；
Fig. 9 is the top view of Fig. 8；
Figure 10 is the left view of Fig. 8；
Figure 11 is the assembly structure figure for the electric heater built-in electrode that the embodiment of the present invention five provides；
Figure 12 is the top view of Figure 11；
Figure 13 is the left view of Figure 11.
In figure:
1, electric heating tube；2, ring flange；3, built-in electrode；31, cylindrical positive electrode layer；32, cylindrical positive electrode layer；
33, sheet positive electrode；34, sheet-like negative electrode；4, filter layer；5, built-in electrode binding post.
Specific embodiment
To keep the technical problems solved, the adopted technical scheme and the technical effect achieved by the invention clearer, below
It will the technical scheme of the embodiment of the invention will be described in further detail in conjunction with attached drawing, it is clear that described embodiment is only
It is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
Embodiment one
The present embodiment proposes the first electric heater, and as shown in Figure 1 to Figure 3, which includes liner, electric heating
Pipe 1, ring flange 2 and built-in electrode 3 for installing electric heating tube 1.In the present embodiment, built-in electrode 3 is mounted on liner
Inside, and be arranged close to electric heating tube 1.Preferably, electric heating tube 1 is U-shaped heating tube.
Electric heater further include built-in electrode 3 positive electrode and negative electrode between connect for control each electrode positive and negative
The positive and negative control circuit that polarity of electrode exchanges, positive and negative control circuit are connect with control panel.Positive and negative control circuit is controllable built-in
The positive electrode and negative electrode of electrode 3 carry out polarity exchange, and the commutation of positive and negative control circuit according to scheduled time and/or frequency
Period can be set according to particular condition in use by control panel, and the electrical property of positive and negative electrode is replaced in timing, thus in effectivelying prevent
The deposition of heating tube scale in gallbladder.
In the present embodiment, as shown in Figure 1 to Figure 3, built-in electrode 3 includes the cylindrical positive electricity for connecting to power supply and being arranged
Pole layer 31 and cylindrical positive electrode layer 32.Preferably, cylindrical positive electrode layer 31 and cylindrical positive electrode layer 32 are arranged in parallel, and two
Person is connect by built-in electrode binding post 5 with power positive cathode.Cylindrical positive electrode layer 31 and cylindrical positive electrode layer 32 are adopted
It is wound with active carbon fiber felt or active carbon cloth and non-woven fabrics alternative stacked.Built-in electrode 3 is mounted on ring flange 2, interior
It sets electrode 3 and ring flange 2 is integrated, built-in electrode binding post 5 stretches out the outer end of ring flange 2, and then reduces the aperture of liner
Quantity, installation easy to process.
Built-in electrode 3 is wrapped in the outside of electric heating tube 1 respectively, specifically, the cylindrical positive electrode layer 31 of built-in electrode 3
The outside of electric heating tube 1 is wrapped in cylindrical positive electrode layer 32.
In the present embodiment, the on-load voltage of built-in electrode 3 is 1.8V, and built-in electrode 3 is positive and negative after separated in time
Electrode layer inverts, and the deposits such as crystallite calcium carbonate, magnesium carbonate, magnesium hydroxide formed in positive electrode layer fall off, and rushes with water flow
It walks, it is final to realize scale removal purpose.
After built-in electrode 3 is powered, following electrochemical reaction occurs:
Cylindrical positive electrode layer 31:
2H2O → O2↑ + 2H+ + 2e-
4OH- → O2↑+ 2H20 + 4e-
Cylindrical positive electrode layer 32:
HCO3 -+OH- → CO3 2- + H2O
Ca2+ + CO3 2- → CaCO3↓
Mg2+ + 2OH- → Mg(OH)2↓
Mg2+ + CO3 2- →MgCO3↓
The cylinder that calcium ions and magnesium ions in water are deposited on built-in electrode 3 in the form of calcium carbonate, magnesium carbonate, magnesium hydroxide is negative
Electrode layer 32, to reduce the hardness of water.
Water, which enters in liner, carries out dirty removing processing through built-in electrode 3, hinders scale in the deposition of electric heating tube, greatly improves
The scale removal effect of electric heater, effectively reduces the hardness of water, improves bathing water quality.
Embodiment two
The present embodiment proposes second of electric heater, which includes built-in electrode 3, wherein built-in electrode 3
Structure is identical as the structure of built-in electrode described in embodiment one, omits description herein.
The electric heater of the present embodiment and electric heater described in embodiment one difference place be: the present embodiment it is built-in
Electrode 3 is different relative to the setting position of electric heating tube 1.
In the present embodiment, specifically, as shown in Figures 4 to 6, built-in electrode 3, which is mounted on ring flange 2 and is located at electricity, to be added
The inside of heat pipe 1, that is to say, that the cylindrical positive electrode layer 31 of built-in electrode 3 and cylindrical positive electrode layer 32 are located at U-shaped electricity and add
In space between 1 two straight tubes in inside of heat pipe.Be provided between cylindrical positive electrode layer 31 and cylindrical positive electrode layer 32 every
Stratum reticulare 4.
Embodiment three
The present embodiment proposes the third electric heater, which includes built-in electrode 3, wherein built-in electrode 3
Structure is identical as the structure of built-in electrode described in embodiment one, omits description herein.
The electric heater of the present embodiment and electric heater described in embodiment one difference place be: the present embodiment it is built-in
Electrode 3 is different relative to the setting position of electric heating tube 1.
In the present embodiment, specifically, built-in electrode 3 is close as shown in fig. 7, built-in electrode 3 is mounted on the bottom of liner
The fire end of electric heating tube 1 is simultaneously arranged perpendicular to electric heating tube 1.
Example IV
The present embodiment proposes the 4th kind of electric heater, which includes built-in electrode 3, the electric hot water of the present embodiment
Device and the difference place of electric heater described in embodiment one are: the structure of the built-in electrode 3 of the present embodiment and setting position and
The structure of built-in electrode described in embodiment one is different with setting position.
In the present embodiment, specifically, as shown in Fig. 8 to Figure 10, built-in electrode 3 includes passing through electrode terminal and power supply
The sheet positive electrode 33 of positive and negative anodes connection and the sheet-like negative electrode 34 being arranged with 33 face of sheet positive electrode, 33 He of sheet positive electrode
Sheet-like negative electrode 34 is parallel to the setting of electric heating tube 1.In the present embodiment, sheet positive electrode 33 and sheet-like negative electrode 34 are preferred
It is made using the titanium net of surface coating corrosion-resistant finishes.
Built-in electrode 3 is mounted on ring flange 2, and sheet positive electrode 33 and sheet-like negative electrode 34 are located at electric heating tube 1
Upper and lower sides.
The sheet positive electrode 33 and sheet-like negative electrode 34 of built-in electrode 3 are 3-10mm, piece at a distance from electric heating tube 1 respectively
The width of shape positive electrode 33 and sheet-like negative electrode 34 is 5mm-50mm, according to the size of specific electric heating tube 1, sheet positive electrode
33 and the size dimension of sheet-like negative electrode 34 be advisable with covering electric heating tube 1.
In addition, in order to save material, can only add close to electric heating tube 1 since the fire end of electric heating tube 1 is in front end
Sheet positive and negative electrode is installed in the part in hot end, and rest part is the cylindrical positive and negative electrode layer as described in embodiment one.
Embodiment five
The present embodiment proposes the 5th kind of electric heater, which includes built-in electrode 8, wherein built-in electrode 3
Structure is identical as the structure of built-in electrode described in example IV, omits description herein.
Electric heater described in the electric heater and example IV of the present embodiment difference place be: the present embodiment it is built-in
Electrode 3 is different relative to the setting position of electric heating tube 1.
In the present embodiment, specifically, as shown in Figure 11 to Figure 13, built-in electrode 3 is mounted on ring flange, it is parallel to electricity
The setting of heating tube 1, sheet positive electrode 33 and sheet-like negative electrode 34 are located at the inside of electric heating tube 1, that is to say, that built-in electrode 3
Sheet positive electrode 33 and sheet-like negative electrode 34 be located in the space between 1 two straight tubes in inside of U-shaped electric heating tube.
The sheet positive electrode 33 and sheet-like negative electrode 34 of built-in electrode 3 and 1 distance 3-10mm of electric heating tube, sheet positive electricity
The width of pole 33 and sheet-like negative electrode 34 is 5mm-30mm, is no more than inner-tube mouth size, and with a thickness of 0.5-5mm, length is from flange
Disk extends to electric heating tube front end.
Similarly, in order to save material, sheet positive and negative electrode only can be installed in the part close to 1 fire end of electric heating tube,
Terminal portion is using cylindrical positive and negative electrode layer.
Built-in electrode shape in the application is not limited to situation described above, the shape phase of shape and electric heating tube
Match, i.e. the chamfered shape of built-in electrode and the chamfered shape of electric heating tube is similar, can reach scale inhibition effect and size
Less than inner-tube mouth, smoothly installs, material can also be saved, reduce cost.
The electric heater of the application removes scale removal using built-in electrode, and built-in electrode, which continues working, hinders scale in heating tube
Deposition, substantially increases the scale removal effect of electric heater, reduces the hardness of water, improve bathing water quality.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (4)
- It is special including liner, electric heating tube (1) and ring flange (2) for installing electric heating tube (1) 1. a kind of electric heater Sign is, further includes built-in electrode (3), the built-in electrode (3) is mounted on the inside of liner, and sets close to electric heating tube (1) It sets；The built-in electrode (3) includes the cylindrical positive electrode layer (31) and cylinder positive electrode layer for connecting to power supply and being arranged (32), the cylindrical positive electrode layer (31) and cylindrical positive electrode layer (32) be all made of active carbon fiber felt or active carbon cloth with Non-woven fabrics alternative stacked is wound.
- 2. electric heater according to claim 1, which is characterized in that the electric heater further includes built-in electrode (3) The positive and negative control circuit exchanged for controlling each electrode positive and negative electrode polarity connected between positive electrode and negative electrode, it is described just Negative control circuit is connect with control panel.
- 3. electric heater according to claim 1, which is characterized in that the built-in electrode (3) is mounted on ring flange (2) On, the built-in electrode (3) is wrapped in the outside of electric heating tube (1) or is located at the inside of electric heating tube (1).
- 4. electric heater according to claim 1, which is characterized in that the built-in electrode (3) is mounted on the bottom of liner, The fire end of the built-in electrode (3) close electric heating tube (1) is simultaneously arranged perpendicular to electric heating tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510378456.6A CN106322749B (en) | 2015-06-30 | 2015-06-30 | Electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510378456.6A CN106322749B (en) | 2015-06-30 | 2015-06-30 | Electric water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106322749A CN106322749A (en) | 2017-01-11 |
| CN106322749B true CN106322749B (en) | 2019-05-14 |
Family
ID=57726470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510378456.6A Active CN106322749B (en) | 2015-06-30 | 2015-06-30 | Electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106322749B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2392336Y (en) * | 1999-07-29 | 2000-08-16 | 青岛市家用电器研究所 | Scale-proof electric water heater |
| JP2008170027A (en) * | 2007-01-09 | 2008-07-24 | Sanyo Electric Co Ltd | Hot water storage tank |
| CN201121972Y (en) * | 2007-10-12 | 2008-09-24 | 海尔集团公司 | Automatically descaling electric water heater |
| CN201218592Y (en) * | 2008-04-11 | 2009-04-08 | 奥特朗电器（广州）有限公司 | Electric water heater with electronic descaling means |
| CN202133113U (en) * | 2011-04-29 | 2012-02-01 | 重庆欧凯电器有限公司 | Adjustable cathode protection type water heater |
| CN203036854U (en) * | 2012-12-10 | 2013-07-03 | 佛山市顺德万和电气配件有限公司 | Automatic descaling electric water heater |
| JP2013208528A (en) * | 2012-03-30 | 2013-10-10 | Daikin Industries Ltd | Electrolytic apparatus and temperature adjusting water supply machine |
| CN204141850U (en) * | 2014-09-02 | 2015-02-04 | 青岛经济技术开发区海尔热水器有限公司 | Automatic descaling water heater |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140138258A1 (en) * | 2012-11-18 | 2014-05-22 | David Sherzer | Method for Enhancing Minerals Removal |
-
2015
- 2015-06-30 CN CN201510378456.6A patent/CN106322749B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2392336Y (en) * | 1999-07-29 | 2000-08-16 | 青岛市家用电器研究所 | Scale-proof electric water heater |
| JP2008170027A (en) * | 2007-01-09 | 2008-07-24 | Sanyo Electric Co Ltd | Hot water storage tank |
| CN201121972Y (en) * | 2007-10-12 | 2008-09-24 | 海尔集团公司 | Automatically descaling electric water heater |
| CN201218592Y (en) * | 2008-04-11 | 2009-04-08 | 奥特朗电器（广州）有限公司 | Electric water heater with electronic descaling means |
| CN202133113U (en) * | 2011-04-29 | 2012-02-01 | 重庆欧凯电器有限公司 | Adjustable cathode protection type water heater |
| JP2013208528A (en) * | 2012-03-30 | 2013-10-10 | Daikin Industries Ltd | Electrolytic apparatus and temperature adjusting water supply machine |
| CN203036854U (en) * | 2012-12-10 | 2013-07-03 | 佛山市顺德万和电气配件有限公司 | Automatic descaling electric water heater |
| CN204141850U (en) * | 2014-09-02 | 2015-02-04 | 青岛经济技术开发区海尔热水器有限公司 | Automatic descaling water heater |
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| Publication number | Publication date |
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| CN106322749A (en) | 2017-01-11 |
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Effective date of registration: 20200601 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Co-patentee after: Qingdao Haier Wisdom Electrical Equipment Co.,Ltd. Patentee after: Qingdao Economic And Technology Development District Haier Water Heater Co.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: Qingdao Economic And Technology Development District Haier Water Heater Co.,Ltd. |