CN206670019U - Electric heater - Google Patents
Electric heater Download PDFInfo
- Publication number
- CN206670019U CN206670019U CN201720188221.5U CN201720188221U CN206670019U CN 206670019 U CN206670019 U CN 206670019U CN 201720188221 U CN201720188221 U CN 201720188221U CN 206670019 U CN206670019 U CN 206670019U
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- Prior art keywords
- end cap
- housing
- electric heater
- muscle
- inner bag
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- 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.)
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Abstract
The utility model discloses a kind of electric heater, including：Housing, set in the tubular of both ends open；Inner bag, it is installed in the housing, and has and offer courage mouth in the first end and the second end, second end that are oppositely arranged on the length bearing of trend of the housing；And first end cap, an openend of the housing is covered on, and set close to the first end of the inner bag；Insulating foam layer is provided between the inner surface of first end cap and the outer surface of the first end.The technical solution of the utility model can improve the heat insulation effect of inner bag.
Description
Technical field
Household appliance technical field is the utility model is related to, more particularly to a kind of electric heater.
Background technology
Electric heater generally include in both ends open housing, in housing and one end be provided with courage mouth inner bag, with
And the end cap of the opening of the remote courage mouth of casing.At present, for inner container insulated, one is generally set between the end cap and inner bag
Eps foam part (polystyrene foam part).However, eps foam part typically by monoblock eps foam cut form, its with
Easy leaking heat at cooperation between end cap, inner bag and housing, and cause the heat insulation effect of inner bag poor.
Utility model content
Main purpose of the present utility model is to propose a kind of electric heater, it is intended to improves the heat insulation effect of inner bag.
To achieve the above object, the utility model proposes electric heater include：
Housing, set in the tubular of both ends open；
Inner bag, be installed in the housing, and with the length bearing of trend of the housing in the be oppositely arranged
One end and the second end, second end offer courage mouth；And
First end cap, an openend of the housing is covered on, and is set close to the first end of the inner bag；
Insulating foam layer is provided between the inner surface of first end cap and the outer surface of the first end.
Preferably, the insulating foam layer is hard polyurethane foam layer.
Preferably, the first end is covered with reinforcement.
Preferably, first end cap is located on the outer peripheral areas of the intermediate region including an intermediate region and one；
The reinforcement includes second located at the first reinforcement of the intermediate region and located at the outer peripheral areas
Reinforcement.
Preferably, first reinforcement includes multiple mutually parallel arrangement of first strip muscle and multiple phases are set parallel
The the second strip muscle put, the second strip muscle intersect with the first strip muscle.
Preferably, second reinforcement include ring-type muscle that multiple circumferential directions along first end cap extend, with
And the Article 3 shape muscle that multiple radial directions along first end cap extend, the Article 3 shape muscle and the ring-type muscle phase
Hand over.
Preferably, first end cap is as made by metal material.
Preferably, first end cap includes the metal material layer and plastic material layer being mutually stacked.
Preferably, it is provided with spacing flange in the openend being connected with first end cap of the housing, it is described spacing to turn over
Limited ring groove between side and the housing formed with opening towards another openend；First end cap include lid body, with
And from the periphery of the lid body to the installation flange extended away from the direction of the inner bag；The installation flange, which is embedded, to be installed on
The limited ring groove.
Preferably, first end cap also includes the sealing flange for connecting the free end of the installation flange, the sealing
Flange extends to towards the direction of the inner bag, and the outer surface of the sealing flange is bonded with the inner surface of the housing and set
Put.
In the technical solution of the utility model, hair is provided between the inner surface of the first end cap and the outer surface of inner bag first end
Steep heat-insulation layer, it will be understood that the insulating foam layer is injected expanded material high pressure to be molded by high-pressure foam equipment, can
So that the insulating foam layer is brought into close contact with the first end cap, inner bag first end and housing, in this way, compared in the first end cap
The technical scheme for cutting the eps foam part formed is set between inner bag first end, and the technical program can reduce inner bag first end
Heat losses rate, so as to improve the heat insulation effect of inner bag.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.
Fig. 1 is the part-structure schematic diagram of the embodiment of the utility model electric heater one；
Fig. 2 is the mplifying structure schematic diagram at A in Fig. 1；
Fig. 3 is the cross section structure schematic diagram of the first end cap of electric heater in Fig. 1；
Fig. 4 is the mplifying structure schematic diagram at B in Fig. 3；
Fig. 5 is the structural representation of the first end cap of electric heater in Fig. 1；
Fig. 6 is the mplifying structure schematic diagram at C in Fig. 3.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 1 | Housing | 11 | Spacing flange |
| 12 | Limited ring groove | 2 | Inner bag |
| 20 | Courage mouth | 3 | First end cap |
| 31 | End cap body | 32 | Flange is installed |
| 33 | Connect flange | 34 | Avoid annular groove |
| 35 | Seal flange | 36 | Reinforcement |
| 361 | First reinforcement | 361a | First strip muscle |
| 361b | Second strip muscle | 362 | Second reinforcement |
| 362a | Ring-type muscle | 362b | Article 3 shape muscle |
| 301 | Intermediate region | 302 | Outer peripheral areas |
| 303 | Metal material layer | 304 | Plastic material layer |
| 4 | First installation lid | 51 | Insulating foam layer |
| 52 | Hard polyurethane foam layer |
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belong to the scope of the utility model protection.
If it is to be appreciated that related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality instruction be only used for explain it is relative between each part under a certain particular pose (as shown in drawings)
Position relationship, motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes therewith.
If, should " first ", " the in addition, relate to the description of " first ", " second " etc. in the utility model embodiment
Two " etc. description is only used for describing purpose, and it is not intended that instruction or implying its relative importance or implicit indicating meaning
The quantity of the technical characteristic shown.Thus, " first " is defined, the feature of " second " can express or implicitly include at least one
Individual this feature.In addition, the technical scheme between each embodiment can be combined with each other, but must be with ordinary skill
Personnel can be implemented as basis, and this technical side is will be understood that when the combination appearance of technical scheme is conflicting or can not realize
The combination of case is not present, also not within the protection domain of the requires of the utility model.
The utility model proposes a kind of electric heater.
Reference picture 1, in the embodiment of the utility model one, the electric heater includes：
Housing 1, set in the tubular of both ends open；
Inner bag 2, be installed in housing 1, and with the length bearing of trend of housing 1 in the first end that is oppositely arranged and
Second end, its second end offer courage mouth 20；And
First end cap 3, an openend of housing 1 is covered on, and is set close to the first end of inner bag 2.
In the present embodiment, insulating foam layer is provided between the inner surface of the first end cap 3 and the outer surface of the first end of inner bag 2
51, it will be understood that the insulating foam layer 51 is injected expanded material high pressure to be molded by high-pressure foam equipment, may be such that
The insulating foam layer 51 is brought into close contact with the first end cap 3, the first end of inner bag 2 and housing 1, in this way, compared in first end
The technical scheme of eps foam part for cutting and forming is set between lid 3 and the first end of inner bag 2, and the technical program can reduce inner bag 2 the
The heat rate of scattering and disappearing of one end, so as to improve the heat insulation effect of inner bag 2.
In the present embodiment, the insulating foam layer 51 between the first end cap 3 and the first end of inner bag 2 is preferably hard polyaminoester
Foaming layer, compared to the expanded material of common foaming layer, the heat-insulating property of polyurethane foam is more preferable, can improve electric heater
Heat-insulating property.Preferably, the hard polyurethane foam layer is to use to contain foaming agent LBA (anti-form-1s-chloro- 3,3,3- trifluoropropyl
Alkene) and/or foaming agent FEA-1100 (hexafluorobutene) expanded material institute high-pressure foam shaping, foaming agent LBA and foaming agent
FEA-1100 (hexafluorobutene) is green-blowing agent, meets environmental requirement.In addition, in the present embodiment, the inner surface of housing 1
It is also preferably provided with hard polyurethane foam layer 52 between the outer peripheral face of inner bag 2, and the inner surface of the first end cap 3 and inner bag 2 the
Hard polyurethane foam layer between the outer peripheral face of between the outer surface of one end and housing 1 inner surface and inner bag 2 is preferred
It is foaming-formed, to reduce number and the time that the high-pressure foam needed for the electric heater operates, improves manufacture efficiency.
It is appreciated that if the thickness of the insulating foam layer 51 between the first end cap 3 and the first end of inner bag 2 is excessively thin, it is difficult to full
Sufficient thermal requirements；If its thickness is blocked up, the volume of electric heater is larger and required cost is higher；In the present embodiment, the first end cap
The thickness of insulating foam layer 51 between 3 and the first end of inner bag 2 is preferably 5 millimeters~20 millimeters, to take into account insulation and cost.
Further, the electric heater also includes the second end cap (not shown) located at the other end of housing 1, second end cap
Corresponding courage mouth 20 offers operation aperture, and detachable cover is provided with the second installation lid (not shown) in the operation aperture.This implementation
In example, the setting of the second end cap and the second installation lid can avoid the pipeline structure at the courage mouth 20 of inner bag 2 from being exposed outside.In addition, the
Two opening for installation lid unload setting, can be easy to the maintenance and replacing of the pipeline structure.
In the present embodiment, the outer surface of the first end cap 3 is also preferably equipped with the first installation lid 4, the first installation lid 4 and the
Two installation lids are in the both ends for being symmetrically located at housing 1, i other words, the first installation lid 4 is of similar shape with the second installation lid
And size, in this way, may be such that the left and right ends of the electric heater has basically identical surface structure.In addition, the first installation lid 4
It may also function as the effect of the enhancing intensity of the first end cap 3.
It is appreciated that insulating foam layer 51 is injected expanded material high pressure to be molded by high-pressure foam equipment, because
This, in foaming process, the first end cap 3 can be by very big blow pressure.
Reference picture 2 is to Fig. 4 in the lump, is provided with the present embodiment, in the openend being connected with the first end cap 3 of housing 1 spacing
Flange 11, and the limited ring groove 12 between the spacing flange 11 and housing 1 formed with opening towards another openend.First end cap
3 include lid body and from the periphery of lid body to the installation flange 32 extended away from the direction of inner bag 2.The installation flange
32 are embedded and are installed on limited ring groove 12, in this way, when the first end cap 3 is when by high-pressure foam pressure outwardly, the spacing flange
11 can be formed to the installation flange 32 that is embedded in limited ring groove 12 and stop, inner bag 2 the is faced away from so as to limit the first end cap 3
The direction of one end departs from housing 1.In addition, under high-pressure foam pressure, the free end of installation flange 32 can closely abut spacing ring
The bottom land of groove 12, it is tightly connected so as to be formed between the first end cap 3 and housing 1, so as to avoid the expanded material of high pressure from first
Overflow junction between end cap 3 and housing 1.
Further, first end cap 3 also includes connection end cap body 31 with installing the connection flange 33 of flange 32, the company
Connect flange 33 to towards the direction of inner bag 2 to extend, and deviate between the connection flange 33 and installation flange 32 formed with an opening
The avoidance annular groove of inner bag 2.In the present embodiment, while installation flange 32 is embedded and is installed on limited ring groove 12, spacing flange 11
Also it is embedded and is installed in the avoidance annular groove, and causes all corresponding opening end end faces along with housing 1 in outer surface of end cap body 31
Linking, in this way, the corresponding opening end end face of housing 1 can be avoided to form protrusion, Ke Yili at the outer surface edge of end cap body 31
Solution, protruded if being formed, dust etc. is easy to be deposited on, and is not easy to the cleaning of electric heater.In addition, in the present embodiment, this is kept away
The opening of annular groove is allowed preferably to be set on the direction of inner bag 2 in opening, in order to which spacing flange 11 is embedded in the avoidance annular groove.
Further, first end cap 3 also includes the sealing flange 35 of the free end of connection installation flange 32, and the sealing is turned over
Side 35 extends to towards the direction of inner bag 2, and the outer surface of the sealing flange 35 is bonded setting with the inner surface of housing 1, in this way,
By way of being bonded face face, high-pressure foam material can be extended and overflow the distance being required through, so as to further improve first end
The sealing connected between lid 3 and housing 1.In addition, in the present embodiment, installation flange 32 and the junction for sealing flange 35 are preferred
It is being in tapered setting on the direction of inner bag 2, in order to embedded limited ring groove 12.
In the present embodiment, further to improve the sealing connected between the first end cap 3 and housing 1, flange 35 is sealed
It is preferred that be bonded with housing 1 by sticky glue, because the deformation of not phase is and caused by, to seal the appearance of flange 35 by the filling of sticky glue
Gap between face and the inner surface of housing 1.Especially, still there is certain elastic sticky glue after solidification can be used.Right the design
Not limited to this, in other embodiment, elastic seal ring (not shown) can be also set between sealing flange 35 and housing 1, with
By the adaptive elasticity of elastic seal ring, the deformation gap between the sealing outer surface of flange 35 and the inner surface of housing 1 is eliminated.
In the utility model, when being provided with the elastic seal ring between sealing flange 35 and housing 1, the outer surface of flange 35 is sealed
The positioning ring groove (not shown) being arranged for elastic seal ring is preferably provided with, to avoid the elastic seal ring from being produced during installation
The raw displacement for departing from sealing flange 35, improves the convenience assembled between the first end cap 3 and housing 1；Certainly, the elastic seal ring
Part is revealed in positioning ring groove, and the inner surface of housing 1 is contradicted with elasticity, so as to lift-off seal effect.
Reference picture 5, further, in the present embodiment, become to avoid the first end cap 3 from producing plasticity because of blow pressure
Shape, user's use is influenceed, the first end cap 3 is additionally provided with reinforcement 36, to strengthen the rigidity of the first end cap 3 by reinforcement 36.Separately
Outside, during electric heater is carried, the first end cap 3 be able to may also be collided pressure because of not expected collision, because
This, is strengthened the rigidity of the first end cap 3 by reinforcement 36, can also reduce the first end cap 3 and plastic deformation is produced because of impact pressure
Probability.
In addition, in the present embodiment, reinforcement 36 is preferably disposed to the inner surface of the first end cap 3, to avoid reinforcement 36 from appearing
Outside, so as to reducing the probability that dust etc. deposits on the outer surface of the first end cap 3.
Further, the first end cap 3 includes an intermediate region 301 and one is located on the outer peripheral areas of intermediate region 301
302.Preferably, the first installation lid 4 is installed on intermediate region 301, and the outer surface of intermediate region 301 sinks and is located at outer peripheral areas
302 outer surface, and the outer surface of the first installation lid 4 is mutually connected with the outer surface of outer peripheral areas 302, in this way, can avoid
Formed between the outer of first installation lid 4 and the interior edge of outer peripheral areas 302 and easily cut the step surface of hand, and be unfavorable for carrying.This reality
Apply in example, reinforcement 36 includes the first reinforcement 361 for being located at intermediate region 301 and added located at the second of outer peripheral areas 302
Strengthening tendons 362, i other words, the regional on the first end cap 3 is equipped with reinforcement 36, rigid good so as to ensure.So originally set
Not limited to this is counted, in other embodiment, also reinforcement only can be set in outer peripheral areas 302.
In the present embodiment, the first reinforcement 361 and the second reinforcement 362 are usually disposed as different shapes.Specifically,
One reinforcement 361 includes multiple mutually parallel arrangement of first strip muscle 361a and multiple mutually parallel arrangement of second strip muscle
361b, and the second strip muscle 361b intersects with the first strip muscle 361a, is grown with strengthening intermediate region 301 along the first strip muscle 361a
Spend on direction and along the ability of anti-deformation on the second strip muscle 361b length directions.Preferably, the plurality of first strip muscle
361a and multiple second strip muscle 361b is that respective uniform intervals are set, to cause the intermediate region 301 of first end lid 3
Intensity it is more uniform.In addition, the second strip muscle 361b preferably intersects vertically with the first strip muscle 361a.It should be noted that
The design not limited to this, in other embodiment, the first strip muscle 361a also can be only set on intermediate region 301.
In the present embodiment, the second reinforcement 362 includes the ring-type muscle that multiple circumferential directions along the first end cap 3 extend
Article 3 the shape muscle 362b, Article 3 shape muscle 362b and ring-type that 362a and multiple radial directions along the first end cap 3 extend
Muscle 362a intersects, in this way, can strengthen the circumferentially ability of anti-deformation of direction and radial direction of outer peripheral areas 302.Similarly, this is more
Individual ring-type muscle 362a is preferably set along the radially outward uniform intervals of the first end cap 3, multiple Article 3 shape muscle 362b then preferred edges
The circumferential direction uniform intervals of first end cap 3 are laid.Right the design not limited to this, in other embodiment, in outer peripheral areas 302
The ring-type muscle 362a also can be only set.
In addition, in the present embodiment, further to improve the integral rigidity of the first end cap 3, the end cap 3 of reinforcement 36 and first
Preferably integrally formed structure.Specifically, the end cap 3 of reinforcement 36 and first can be the plastic parts of injection moulding integrated molding, or
Person is the integrally formed sheet metal component of punching press, or the metalwork for casting integrated shaping, the utility model are not restricted to this.
It should be noted that in some other embodiments of the present utility model, to strengthen the rigidity of the first end cap 3, also
First end cap 3 can be made up of metal material.Preferably, the first end cap 3 is as made by stainless steel or aluminum alloy material.
Electric heater is usually mounted to the toilet with wet environment, and stainless steel is not easy to the property got rusty, and can extend first
The service life of end cap 3.Compared to stainless steel, the rigidity of aluminum alloy material is poor, but cost is relatively low.Right the design is unlimited
In this, in other embodiment, the first end cap 3 can also use other higher metal materials of intensity.
In addition, in still further embodiments of the present utility model, reference picture 6, the first end cap 3 can also include phase layer
The folded metal material layer 303 and plastic material layer 304 set, compared to common the first end cap of plastic parts 3, metal material layer
303 may be such that the first end cap 3 has preferably rigidity.Preferably, plastic material layer 304 is provided with two layers, and the two layers of plastic material
Matter layer 304 is divided into the opposite sides of metal material layer 303.Electric heater is usually mounted to the toilet with wet environment,
Between metal material layer 303 is arranged on into two plastic material layers 304 in a manner of interlayer, it can avoid strengthening rigid metal
Material layers 303 are corroded, so as to extend the life-span of the first end cap 3.Preferably, metal material is steel material or aluminium alloy material
Matter, steel material and aluminum alloy material are easily obtained, wherein, steel material is rigidly more preferable, and aluminum alloy material cost is relatively low；Right the design
Not limited to this, in other embodiment, the first end cap 3 can also use other higher metal materials of intensity.In addition, plastic material
Preferably ABS plastic material, POM plastic material or PP plastic materials, these plastic material intensity are higher, can make the first end cap 3
High intensity it is more guaranteed；Certainly, in other embodiment, other higher plastic materials of intensity can be used.
It is appreciated that if the thickness of the first end cap 3 is excessively thin, its rigidity will be difficult to meet to require；If the thickness of the first end cap 3
Blocked up, its cost will be too high.In the utility model, the thickness H of the first end cap 3 is preferably 0.3 millimeter~3 millimeters (see Fig. 4),
To take into account rigidity and cost.
Preferred embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model,
Every equivalent structure change under inventive concept of the present utility model, made using the utility model specification and accompanying drawing content
Change, or directly/be used in other related technical areas indirectly and be included in scope of patent protection of the present utility model.
Claims (10)
- A kind of 1. electric heater, it is characterised in that including：Housing, set in the tubular of both ends open；Inner bag, it is installed in the housing, and has on the length bearing of trend of the housing in the first end being oppositely arranged With the second end, second end offers courage mouth；AndFirst end cap, an openend of the housing is covered on, and is set close to the first end of the inner bag；Insulating foam layer is provided between the inner surface of first end cap and the outer surface of the first end.
- 2. electric heater as claimed in claim 1, it is characterised in that the insulating foam layer is hard polyurethane foam layer.
- 3. electric heater as claimed in claim 1, it is characterised in that the first end is covered with reinforcement.
- 4. electric heater as claimed in claim 3, it is characterised in that first end cap includes an intermediate region, Yi Jiyi It is located on the outer peripheral areas of the intermediate region；The reinforcement includes the first reinforcement located at the intermediate region and the second reinforcement located at the outer peripheral areas Muscle.
- 5. electric heater as claimed in claim 4, it is characterised in that first reinforcement includes multiple mutually parallel arrangement of First strip muscle and multiple mutually parallel arrangement of second strip muscle, the second strip muscle intersect with the first strip muscle.
- 6. electric heater as claimed in claim 4, it is characterised in that second reinforcement includes multiple along the first end The Article 3 shape muscle that the ring-type muscle of the circumferential direction extension of lid and multiple radial directions along first end cap extend, institute Article 3 shape muscle is stated with the ring-type muscle to intersect.
- 7. electric heater as claimed in claim 1, it is characterised in that first end cap is as made by metal material.
- 8. electric heater as claimed in claim 1, it is characterised in that first end cap includes the metal material being mutually stacked Matter layer and plastic material layer.
- 9. the electric heater as described in any one of claim 1 to 8, it is characterised in that the housing with first end cap Spacing flange is provided with the openend of connection, formed with opening towards another openend between the spacing flange and the housing Limited ring groove；First end cap includes lid body and from the periphery of the lid body to away from the direction of the inner bag The installation flange of extension；The installation flange, which is embedded, is installed on the limited ring groove.
- 10. electric heater as claimed in claim 9, it is characterised in that first end cap also includes the connection installation and turned over The sealing flange of the free end on side, the sealing flange extend to towards the direction of the inner bag, and the sealing flange is outer Surface is bonded setting with the inner surface of the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720188221.5U CN206670019U (en) | 2017-02-28 | 2017-02-28 | Electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720188221.5U CN206670019U (en) | 2017-02-28 | 2017-02-28 | Electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206670019U true CN206670019U (en) | 2017-11-24 |
Family
ID=60379767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720188221.5U Active CN206670019U (en) | 2017-02-28 | 2017-02-28 | Electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206670019U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507156A (en) * | 2017-02-28 | 2018-09-07 | 芜湖美的厨卫电器制造有限公司 | Electric heater |
| CN111331772A (en) * | 2018-12-18 | 2020-06-26 | 青岛经济技术开发区海尔热水器有限公司 | Preparation method of double-liner water heater and double-liner water heater |
-
2017
- 2017-02-28 CN CN201720188221.5U patent/CN206670019U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507156A (en) * | 2017-02-28 | 2018-09-07 | 芜湖美的厨卫电器制造有限公司 | Electric heater |
| CN108507156B (en) * | 2017-02-28 | 2020-10-16 | 芜湖美的厨卫电器制造有限公司 | Electric water heater |
| CN111331772A (en) * | 2018-12-18 | 2020-06-26 | 青岛经济技术开发区海尔热水器有限公司 | Preparation method of double-liner water heater and double-liner water heater |
| CN111331772B (en) * | 2018-12-18 | 2024-01-09 | 青岛经济技术开发区海尔热水器有限公司 | Preparation method of double-liner water heater and double-liner water heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221103 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 241009 Wan Chun East Road, East District, Wuhu economic and Technological Development Zone, Anhui Patentee before: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd. |
|
| TR01 | Transfer of patent right |