CN104110853A - Water heater - Google Patents
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- CN104110853A CN104110853A CN201410163957.8A CN201410163957A CN104110853A CN 104110853 A CN104110853 A CN 104110853A CN 201410163957 A CN201410163957 A CN 201410163957A CN 104110853 A CN104110853 A CN 104110853A
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- wall hanging
- water heater
- interior wall
- inner bag
- heat insulating
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Abstract
The invention discloses a water heater comprising a housing, an inner cylinder, inner wall hangers, outer wall hangers and connectors. The inner cylinder is arranged in the housing, a heat insulating layer is arranged between the inner cylinder and the housing, the inner wall hangers are arranged on the inner cylinder, the outer wall hangers are arranged out of the housing and are connected to the inner wall hangers, one ends of the connectors penetrate the outer wall hangers to connect to the outer wall hangers and the inner wall hanger, and at least one of the inner wall hangers, outer wall hangers and connectors are provided with a nano heat insulating material layer. According to an embodiment, a water heater body can be mounted on the wall through the inner wall hangers, the outer wall hangers and the connectors, structure is simple, mounting is facilitated, and large radiating portions of the inner wall hangers, outer wall hangers and connectors are provided with the nano heat insulating material layers, energy loss of the large radiating portions can be reduced to the minimum extent, the heat insulating effect is fine, the processing process of the nano heat insulating material layer is simple and rapid, large change on the structure of the water heater is omitted, and production is facilitated.
Description
Technical field
The present invention relates to a kind of water heater.
Background technology
Along with the raising of national associated appliance energy conservation standard, also more and more higher to the energy-conservation requirement in electric heater use procedure, the quality of the heat-insulating property of electric heater has directly determined the energy consumption size in its use procedure, the integral heat insulation performance of electric heater not only depends on structure and the heat-insulating property of heat-insulation layer wherein, also dispel the heat compared with large part (as electric heater is installed to wall hanging on the wall with wherein each simultaneously, the Inlet and outlet water mouth of pipe, magnesium rod mouthful, inner bag left and right end cap, electric control chamber, shell end cap etc.) processing mode have much relations, therefore, in order further to improve the integral heat insulation effect of electric heater, must strengthen the insulation processing of heat radiation point everywhere.
Electric heater in correlation technique, mainly on the basis of existing electric heater, having additional end cap thermal insulator and/or heat-insulating block and/or heatproof plastics takes over or Ultrathin electric water device leakage preventing wall, but compared with the polyurethane heat insulation material using with electric heater, its thermal conductivity factor is higher, and heat insulation effect is still not ideal.
Water-storage electric heater in correlation technique is by taking, at corresponding site, different-thickness is set, the rubber and plastic heat-preservation cotton of structure is strengthened the measure of insulation, there is certain effect for the integral heat insulation performance that improves electric heater, but because the thermal conductivity factor of the rubber and plastic heat-preservation cotton wherein adopting is higher, for 35mW/mK left and right (thermal conductivity factor of polyurethane is 19mW/mK left and right), heat-insulating property is not fine, reinforcement heat insulation effect for each heat radiation point is not too obvious, and metal bolts or the metallic screw of not considering to connect interior wall hanging and outer wall hanging are also the larger heat bridges that dispels the heat, do not carry out the corresponding insulation processing of strengthening, in addition, because it need to arrange the rubber and plastic cotton that different-thickness, different size are installed at different parts, production technology is more loaded down with trivial details, and also may select wrong rubber and plastic cotton in production process, that is to say that its production efficiency is lower.
Summary of the invention
The present invention is intended to one of solve the problems of the technologies described above at least to a certain extent.
For this reason, one object of the present invention is to propose a kind of simple in structure, high insulating effect and the high water heater of production efficiency.
According to the water heater of the embodiment of the present invention, comprising: shell; Inner bag, described inner bag is located in described shell, between described inner bag and described shell, is provided with heat-insulation layer; Interior wall hanging, described inwall is hung on described inner bag; Outer wall hanging, described outer wall is hung on outside described housing and is connected with described interior wall hanging; And connector, one end of described connector is connected to be connected described outer wall hanging and described interior wall hanging with described interior wall hanging through described outer wall hanging, and at least one of described interior wall hanging, outer wall hanging and connector is provided with nanometer heat insulating material layer.
According to the water heater of the embodiment of the present invention, can realize the assembling of water heater on body of wall by interior wall hanging, outer wall hanging and connector, simple in structure, easy to assembly, and be provided with nanometer heat insulating material layer in heat radiations such as interior wall hanging, outer wall hanging and connectors on compared with large part, heat radiation can be reduced to minimum compared with the energy loss of large part, high insulating effect, and nanometer heat insulating material layer treatment process simple and fast, without the structure of water heater is carried out to larger change, easy to prepare.
In addition, according to the water heater of the embodiment of the present invention, can also there is following additional technical characterictic:
According to one embodiment of present invention, described nanometer heat insulating material comprises: the nano vacuum ceramic fine bead of 5-30 weight portion, the auxiliary agent of the acrylate polymer of 60-90 weight portion and 1-10 weight portion.
According to one embodiment of present invention, the thickness of described nanometer heat insulating material is 0.01-2.0mm.
According to one embodiment of present invention, described water heater also comprises: insulating part, described insulating part is located between described outer wall hanging and described interior wall hanging.
According to one embodiment of present invention, described insulating part is provided with described nanometer heat insulating material layer.
According to one embodiment of present invention, described inner bag is provided with the water inlet pipe mouth of pipe, the outlet pipe mouth of pipe and magnesium rod mouthful, on the described water inlet pipe mouth of pipe, the outlet pipe mouth of pipe and magnesium rod mouth, is respectively equipped with described nanometer heat insulating material layer.
According to one embodiment of present invention, the two ends of described inner bag are respectively equipped with left end cap and right end cap, and described interior wall hanging is two, and two described interior wall hangings are along on the spaced apart sidewall that is located at described inner bag of left and right directions.
According to one embodiment of present invention, described housing is provided with service cover, and described service cover is provided with described nanometer heat insulating material layer.
According to one embodiment of present invention, described water heater also comprises: cushion block, described cushion block is located between described interior wall hanging and described inner bag.
According to one embodiment of present invention, described cushion block is high strength plastics piece, and described cushion block is provided with screw thread, and described connector is threaded with described cushion block.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Brief description of the drawings
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is according to the structural representation of the water heater of the embodiment of the present invention;
Fig. 2 is according to the structural representation of the inner bag of the water heater of the embodiment of the present invention;
Fig. 3 is the partial assembled schematic diagram according to the water heater of the embodiment of the present invention.
Reference numeral:
Water heater 100;
Shell 10; Heat-insulation layer 11;
Inner bag 20; The water inlet pipe mouth of pipe 21; Water inlet pipe 211; The outlet pipe mouth of pipe 22; Outlet pipe 221; Magnesium rod mouth 23; Magnesium rod 231; Left end cap 24; Right end cap 25;
Interior wall hanging 30;
Outer wall hanging 40; Wall built-up hole 41;
Connector 50;
Cushion block 60;
Electric-controlled box 70;
Insulating part 80.
Detailed description of the invention
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " thickness ", " on ", orientation or the position relationship of the instruction such as D score, 'fornt', 'back', " left side ", " right side ", " interior ", " outward " be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, construct and operation with specific orientation, therefore can not be interpreted as limitation of the present invention.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
Specifically describe according to the water heater 100 of the embodiment of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1 to Figure 3, comprise shell 10, inner bag 20, interior wall hanging 30, outer wall hanging 40 and connector 50 according to the water heater 100 of the embodiment of the present invention.
Particularly, inner bag 20 is located in shell 10, between inner bag 20 and shell 10, is provided with heat-insulation layer 11.Interior wall hanging 30 is located on inner bag 10, and outer wall hanging 40 is located at outside housing 10 and is connected with interior wall hanging 30.One end of connector 50 is connected to be connected outer wall hanging 40 and interior wall hanging 30 with interior wall hanging 30 through outer wall hanging 40, and at least one of interior wall hanging 30, outer wall hanging 40 and connector 50 is provided with nanometer heat insulating material layer.
Thus, according to the water heater 100 of the embodiment of the present invention, can realize the assembling of water heater 100 on body of wall by interior wall hanging 30, outer wall hanging 40 and connector 50, simple in structure, easy to assembly, and be provided with nanometer heat insulating material layer in heat radiations such as interior wall hanging 30, outer wall hanging 40 and connectors 50 on compared with large part, heat radiation can be reduced to minimum compared with the energy loss of large part, high insulating effect, and nanometer heat insulating material layer treatment process simple and fast, without the structure of water heater 100 is carried out to larger change, easy to prepare.
It should be noted that, in water heater, the larger position of heat radiation comprises the syndeton of inner bag and body of wall assembling, and this syndeton is directly connected with the inner bag of water heater conventionally, can directly take away the heat of inner bag, causes serious heat loss.In correlation technique, seldom have an insulation construction arranging for this syndeton, the heat insulation effects such as conventional heat-preservation cotton are not obvious, and the production of water heater and assembly technology complexity.
And according to the water heater 100 of the embodiment of the present invention, just can realize the assembling of water heater 100 on body of wall by interior wall hanging 30, outer wall hanging 40 and connector 50, assembly structure is simple, has reduced inner bag 20 and extraneous syndeton, has reduced the possibility of heat radiation.In addition, according to the water heater 100 of the embodiment of the present invention, also at least one of interior wall hanging 30, outer wall hanging 40 and connector 50, be provided with nanometer heat insulating material layer, after this nanometer heat insulating material layer is coated on interior wall hanging 30, outer wall hanging 40 and connector 50, can effectively reduce heat radiation compared with the thermal loss of large part, thereby significantly improve the heat insulation effect of water heater 100, and the preparation technology of nanometer heat insulating material layer is simple, convenient formation.
According to one embodiment of present invention, nanometer heat insulating material comprises the nano vacuum ceramic fine bead of 5-30 weight portion, the auxiliary agent of the acrylate polymer of 60-90 weight portion and 1-10 weight portion.Particularly, nano vacuum ceramic fine bead has special hollow Nano microcrystalline balls structure and ultra micro surface texture, can directly reflect, more than 85% radiations heat energy of scattering, and convection heat transfer' heat-transfer by convection, conduction heat transfer is all very little.Therefore, after nanometer heat insulating material layer is dry, be formed with certain flexible polymer coating, have very excellent insulation, heat-proof quality, its thermal conductivity factor is lower than 4mW/mK.
After coating protection by nanometer heat insulating material layer, can greatly reduce heat radiation compared with the heat dissipation capacity of large part, thereby improve the integral heat insulation effect of water heater 100 compared with large part according to the heat radiation of the water heater 100 of the embodiment of the present invention, reduce coefficient of energy dissipation.Nanometer heat insulating material layer can adopt any one in brushing, spraying and roller coat in heat radiation compared with the coating method of large part, and production operation is convenient, and the 8-15min at 40-80 DEG C of the nanometer heat insulating material layer after coating can complete oven dry, and production efficiency is high.
The thickness of nanometer heat insulating material layer can rationally regulate according to the structure of diverse location on water heater 100, and alternatively, according to one embodiment of present invention, the thickness of nanometer heat insulating material is 0.01-2.0mm.Particularly, in the time that the coated position of nanometer heat insulating material layer heat dissipation capacity is larger, can correspondingly increase the thickness of coating, to ensure the heat insulation effect of water heater 100; When the coated position of nanometer heat insulating material layer heat dissipation capacity hour, can correspondingly reduce the thickness of coating, to reduce preparation cost.
Be understandable that, in detailed description of the invention more of the present invention, inner bag 20 is provided with the water inlet pipe mouth of pipe 21, the outlet pipe mouth of pipe 22 and magnesium rod mouth 23, on the water inlet pipe mouth of pipe 21, the outlet pipe mouth of pipe 22 and magnesium rod mouth 23, is respectively equipped with nanometer heat insulating material layer.The water inlet pipe mouth of pipe 21 is for being installed into water pipe 211, and the outlet pipe mouth of pipe 22 is for outlet pipe 221 is installed, and magnesium rod mouthfuls 23 is for magnesium rod 231 is installed, and insert in magnesium rod mouthfuls 23 lower end of magnesium rod 231.The water inlet pipe mouth of pipe 21, the outlet pipe mouth of pipe 22 and magnesium rod mouth 23 all exist and the outside structure being connected, and also belong to a certain extent heat radiation compared with large part.Thus, according to the water heater 100 of the embodiment of the present invention, by nanometer heat insulating material layer is set in these structures, can further improve the heat insulation effect of water heater 100.
In order to make connector 50 can connect better interior wall hanging 30 and outer wall hanging 40, alternatively, according to one embodiment of present invention, water heater 100 also comprises cushion block 60, and cushion block 60 is located between interior wall hanging 30 and inner bag 20.Further, cushion block 60 is high strength plastics piece, and cushion block 60 is provided with screw thread, and connector 50 is threaded with cushion block 60.
Particularly, interior wall hanging 30 is located on the outer wall of inner bag 20, spaced apart certain distance between interior wall hanging 30 and the outer wall of inner bag 20, and cushion block 60 is located between interior wall hanging 30 and inner bag 20, is preferably located on the outer wall of inner bag 20.The number of cushion block 60 is identical with the number of connector 50, is respectively equipped with through hole corresponding to position on interior wall hanging 30 and outer wall hanging 40, and each connector 50 is successively through being connected with corresponding cushion block 60 after outer wall hanging 40, interior wall hanging 30.
Connector 50 can be metal bolts or metallic screw, one end of connector 50 is provided with the screw thread with cushion block 60 adaptations, cushion block 60 can be included in two of spaced apart setting on above-below direction, after passing outer wall hanging 40 and interior wall hanging 30, each connector 50 is threaded with cushion block 60, on outer wall hanging 40, the wall built-up hole 41 being connected with body of wall can be set, when installation, this wall built-up hole 41 be hung over to the expansion bolt being fixedly connected in body of wall.Thus, by high strength plastics cushion block 60 is set, connector 50 can firmly be connected with cushion block 60, thereby ensures the bonding strength between interior wall hanging 30 and outer wall hanging 40, has also just ensured the assembling intensity of water heater 100 on body of wall.
Further, according to one embodiment of present invention, the two ends of inner bag 20 are respectively equipped with left end cap 24 and right end cap 25, and interior wall hanging 30 is two, and two interior wall hangings 30 are along on the spaced apart sidewall that is located at inner bag 30 of left and right directions.In other words, inner bag 20 is formed as along continuous straight runs column structure is set, and the two ends of inner bag 20 are sealed by left end cap 24 and right end cap 25 respectively, wherein on right end cap 25, can be provided for controlling the electric-controlled box 70 of water heater 100.Two interior wall hangings 30 are set on the sidewall of inner bag 30, and correspondingly outer wall hanging 40 also has two.Thus, can further ensure the assembling intensity of water heater 100 on body of wall.
According to one embodiment of present invention, the housing 10 of water heater 100 is provided with service cover (not shown), and service cover is provided with nanometer heat insulating material layer.Service cover is arranged on position corresponding with electric-controlled box 70 on housing 10 conventionally, in the time breaking down in water heater 100 inside, can overhaul by service cover, and therefore service cover also exists the problem that heat radiation is larger.According to the water heater 100 of the embodiment of the present invention, by nanometer heat insulating material layer is also set in service cover, can further improve the heat insulation effect of water heater 100.
In order further to improve the heat insulation effect of water heater 100, according to one embodiment of present invention, water heater 100 also comprises insulating part 80, and insulating part 80 is located between outer wall hanging 40 and interior wall hanging 30.Further, insulating part 80 is provided with nanometer heat insulating material layer.Particularly, insulating part 80 can be the conventional collets in this area, insulating part 80 is located between outer wall hanging 40 and interior wall hanging 30, can effectively prevent that electric current from leaking outside, improve the safety in utilization of water heater 100, and insulating part 80 also has certain insulation effect, can further improve the heat insulation effect of water heater 100.
In general, can apply uniform nanometer heat insulating material layer on compared with large part in heat radiations such as the interior wall hanging 30 of water heater, outer wall hanging 40, connector 50, the water inlet pipe mouth of pipe 21, the outlet pipe mouth of pipe 22, magnesium rod mouthfuls 23, service cover and insulating parts 80 according to the water heater 100 of the embodiment of the present invention, the thickness of nanometer heat insulating material layer can be 1mm.Nanometer heat insulating material is mixed by nano vacuum ceramic fine bead, acrylate polymer and auxiliary agent, according to weight ratio nano vacuum ceramic fine bead account for 15%, acrylate polymer accounts for 80%, auxiliary agent accounts for 5%.Nano thermal insulation coating is dried certain flexible polymer coating that has of rear formation, has very excellent insulation, heat-proof quality, and its thermal conductivity factor is lower than 4mW/mK.Above-mentioned each heat radiation after the coating protection by nanometer heat insulating material layer, greatly reduces heat loss everywhere compared with large part, has improved the integral heat insulation effect of water heater 100, has reduced coefficient of energy dissipation.The coating method of nanometer heat insulating material layer is selected to brush technique, uses common brush to brush, and production operation is convenient, and the 10min at 60 DEG C of the thermal insulation coatings after coating can complete oven dry, and production efficiency is high.
According to the water heater 100 of the embodiment of the present invention, systematically consider that each in common electric heater dispels the heat compared with large part, and by using the nanometer heat insulating material that heat-insulating property is very excellent to carry out strengthening being efficiently incubated processing to each heat radiation position, the heat loss at heat radiation position is reduced to minimum, do not changing under the prerequisite of insulation layer thickness and the design of other mould structures, only need to increase a little cost, just can greatly improve the integral heat insulation performance of water heater 100, reduce its coefficient of energy dissipation, improve 1-2 efficiency grade, and production technology is simple, production efficiency is high.
Be all known for those of ordinary skills according to other formations of the water heater of the embodiment of the present invention and operation, be not described in detail here.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention in the situation that not departing from principle of the present invention and aim, amendment, replacement and modification.
Claims (10)
1. a water heater, is characterized in that, comprising:
Shell;
Inner bag, described inner bag is located in described shell, between described inner bag and described shell, is provided with heat-insulation layer;
Interior wall hanging, described inwall is hung on described inner bag;
Outer wall hanging, described outer wall is hung on outside described housing and is connected with described interior wall hanging; And
Connector, one end of described connector is connected to be connected described outer wall hanging and described interior wall hanging with described interior wall hanging through described outer wall hanging, and at least one of described interior wall hanging, outer wall hanging and connector is provided with nanometer heat insulating material layer.
2. water heater according to claim 1, is characterized in that, described nanometer heat insulating material comprises: the nano vacuum ceramic fine bead of 5-30 weight portion, the auxiliary agent of the acrylate polymer of 60-90 weight portion and 1-10 weight portion.
3. water heater according to claim 2, is characterized in that, the thickness of described nanometer heat insulating material is 0.01-2.0mm.
4. water heater according to claim 1, is characterized in that, also comprises: insulating part, described insulating part is located between described outer wall hanging and described interior wall hanging.
5. water heater according to claim 4, is characterized in that, described insulating part is provided with described nanometer heat insulating material layer.
6. water heater according to claim 1, is characterized in that, described inner bag is provided with the water inlet pipe mouth of pipe, the outlet pipe mouth of pipe and magnesium rod mouthful, on the described water inlet pipe mouth of pipe, the outlet pipe mouth of pipe and magnesium rod mouth, is respectively equipped with described nanometer heat insulating material layer.
7. water heater according to claim 1, is characterized in that, the two ends of described inner bag are respectively equipped with left end cap and right end cap, and described interior wall hanging is two, and two described interior wall hangings are along on the spaced apart sidewall that is located at described inner bag of left and right directions.
8. water heater according to claim 1, is characterized in that, described housing is provided with service cover, and described service cover is provided with described nanometer heat insulating material layer.
9. water heater according to claim 1, is characterized in that, also comprises: cushion block, described cushion block is located between described interior wall hanging and described inner bag.
10. water heater according to claim 9, is characterized in that, described cushion block is high strength plastics piece, and described cushion block is provided with screw thread, and described connector is threaded with described cushion block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410163957.8A CN104110853A (en) | 2014-04-22 | 2014-04-22 | Water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410163957.8A CN104110853A (en) | 2014-04-22 | 2014-04-22 | Water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104110853A true CN104110853A (en) | 2014-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410163957.8A Pending CN104110853A (en) | 2014-04-22 | 2014-04-22 | Water heater |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107110559A (en) * | 2014-10-28 | 2017-08-29 | 超高温热水私人有限公司 | Hot water storage device |
| CN108507182A (en) * | 2017-02-28 | 2018-09-07 | 芜湖美的厨卫电器制造有限公司 | Insulation board, wall hanging installation structure and water heater |
| CN108507155A (en) * | 2017-02-28 | 2018-09-07 | 芜湖美的厨卫电器制造有限公司 | Electric heater |
| CN110595069A (en) * | 2019-09-30 | 2019-12-20 | 芜湖美的厨卫电器制造有限公司 | Water heater wall-hanging structure and water heater |
| CN112082195A (en) * | 2020-09-22 | 2020-12-15 | 天政科技发展(山东)有限公司 | Use method of multifunctional nanometer heat-preservation heat reservoir |
-
2014
- 2014-04-22 CN CN201410163957.8A patent/CN104110853A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107110559A (en) * | 2014-10-28 | 2017-08-29 | 超高温热水私人有限公司 | Hot water storage device |
| CN108507182A (en) * | 2017-02-28 | 2018-09-07 | 芜湖美的厨卫电器制造有限公司 | Insulation board, wall hanging installation structure and water heater |
| CN108507155A (en) * | 2017-02-28 | 2018-09-07 | 芜湖美的厨卫电器制造有限公司 | Electric heater |
| CN108507155B (en) * | 2017-02-28 | 2023-11-28 | 芜湖美的厨卫电器制造有限公司 | Electric water heater |
| CN108507182B (en) * | 2017-02-28 | 2024-04-26 | 芜湖美的厨卫电器制造有限公司 | Insulation board, wall hanging mounting structure and water heater |
| CN110595069A (en) * | 2019-09-30 | 2019-12-20 | 芜湖美的厨卫电器制造有限公司 | Water heater wall-hanging structure and water heater |
| CN112082195A (en) * | 2020-09-22 | 2020-12-15 | 天政科技发展(山东)有限公司 | Use method of multifunctional nanometer heat-preservation heat reservoir |
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Application publication date: 20141022 |
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