CN202761015U - Long-acting heat preservation type constant temperature control electric water heater with water coming out of central section - Google Patents
Long-acting heat preservation type constant temperature control electric water heater with water coming out of central section Download PDFInfo
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- CN202761015U CN202761015U CN201220453767.6U CN201220453767U CN202761015U CN 202761015 U CN202761015 U CN 202761015U CN 201220453767 U CN201220453767 U CN 201220453767U CN 202761015 U CN202761015 U CN 202761015U
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- heating element
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- inner bag
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 238000004321 preservation Methods 0.000 title abstract description 9
- 238000009835 boiling Methods 0.000 claims abstract description 51
- 238000010438 heat treatment Methods 0.000 claims description 67
- 238000009413 insulation Methods 0.000 claims description 46
- 239000006185 dispersion Substances 0.000 claims description 7
- 239000006260 foam Substances 0.000 claims description 4
- 244000269722 Thea sinensis Species 0.000 abstract description 16
- 238000005485 electric heating Methods 0.000 abstract description 11
- 240000002853 Nelumbo nucifera Species 0.000 abstract description 5
- 235000006508 Nelumbo nucifera Nutrition 0.000 abstract description 5
- 229920002472 Starch Polymers 0.000 abstract description 5
- 235000013336 milk Nutrition 0.000 abstract description 5
- 239000008267 milk Substances 0.000 abstract description 5
- 210000004080 milk Anatomy 0.000 abstract description 5
- 239000000843 powder Substances 0.000 abstract description 5
- 235000019698 starch Nutrition 0.000 abstract description 5
- 239000008107 starch Substances 0.000 abstract description 5
- 238000009825 accumulation Methods 0.000 abstract 2
- 235000013616 tea Nutrition 0.000 description 14
- 241001474791 Proboscis Species 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000010445 mica Substances 0.000 description 4
- 229910052618 mica group Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000021393 food security Nutrition 0.000 description 1
- 235000009569 green tea Nutrition 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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- 229920001155 polypropylene Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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- 238000007789 sealing Methods 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
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Abstract
The utility model discloses a long-acting heat preservation type constant temperature control electric water heater with water coming out of a central section. The long-acting heat preservation type constant temperature control electric water heater comprises a main body and a cover body. The main body comprises an outer shell and an inner container which is arranged in the inner portion of the outer shell. An electric heater is arranged at the bottom of the main body. The electric heater comprises a water boiling heater, a heat preservation electric heating plate heater and a heat accumulation body. The water boiling heater and the heat preservation electric heating plate heater of the electric heater are tightly contacted with the inner container. The heat accumulation body is encircled on the peripheries of the boiling water heater and the heat preservation electric heating plate heater and forms a scattering type connecting structure. The water boiling heater and the heat preservation electric heating plate heater are respectively connected with a respective temperature controller in series and two heater branches are formed. The two heater branches are connected with two ends of a power source in parallel. A water outlet is arranged on the upper middle portion of the main body and communicated with an inner cavity of the inner container. A long spout is arranged on the position of the water outlet. According to the long-acting heat preservation type constant temperature control electric water heater with water coming out of the central section, water temperature can be kept on the required best preference level for a long time. Requirements of boiling water temperature for various kinds of tea are met, and meanwhile requirements of boiling water temperature for coffee, milk powder and lotus root starch are satisfied.
Description
Technical field
The utility model relates to a kind of follow-on electric heater.
Background technology
At present, electric heater is the common tool of people's daily life, and electric water heater is because its to boil water fast, smokeless and odorless have the characteristics such as environmental protection, and is welcomed by the people.Particularly people have special requirement to the water quality water temperature when making tea, infuse coffee, brewing milk powder, lotus root starch or bubble kung fu tea.As brew the high-grade tea such as Dragon Well tea, high-quality green tea, normally 80～85 ℃ of boiling water optimums; Make coffee or rush milk powder, lotus root starch etc., normally require the boiling water more than 85 ℃; And when drinking kung fu tea, approximately need water temperature to keep about 95 ℃ in 20 minutes always, should not repeatedly heat again, boil and change " fresh " of water.But electric heater of the prior art does not have heat insulation function mostly, perhaps, although have certain heat insulation function, has unreasonable structure, the poor shortcoming of heat insulation effect, therefore, can not satisfy the daily life needs.And traditional device that is used for the boiling water insulation, such as thermos flask, it is to rely on the sealing that vacuumizes in the middle of the double-deck glass liner with bottle plug to reduce radiation loss and guarantee insulation effect, but these attemperators do not possess from heating and boiling water function, particularly in both, there is any one impaired its insulation effect just obviously to descend, roll also fast reducing of (opening) coolant-temperature gage, the glass inner flask is easy to again breakage.Therefore, these thermos flasks can not satisfy people's the needs of making tea, infuse coffee, brew milk powder, lotus root starch or bubble kung fu tea equally.
The utility model content
The purpose of this utility model provides the long-acting thermal-insulating formula thermostatic control electric heater of a kind of middle part water outlet, water temperature can be remained on required optimal temperature for a long time to solve electric heater, the boiling water temperature requirement that brews various tealeaves can be satisfied, the boiling water temperature requirement when making coffee, rushing milk powder, lotus root starch can be satisfied again.
The purpose of this utility model can reach by following technical solution:
The long-acting thermal-insulating formula thermostatic control electric heater of a kind of middle part water outlet comprises main body and lid, and main body comprises shell and is arranged at the inner bag of enclosure, is provided with electric heater in the bottom of main body; Electric heater comprises heating element to boil water, insulation electric boiling plate heating element and thermal store, the heating element to boil water of electric heater, insulation electric boiling plate heating element and inner bag close contact, thermal store be looped around heating element to boil water, insulation electric boiling plate heating element around, thermal store is connected, forms the dispersion shape syndeton by some connectors with heating element to boil water, insulation electric boiling plate heating element, in section connecting element, be provided with heat conduction tie point, closely be connected with inner bag by described heat conduction tie point, make thermal store and inner bag form the point-like syndeton; Described heating element to boil water, insulation electric boiling plate heating element are connected with temperature controller separately respectively and are formed two heating element branch roads, these two heating element branch circuit parallel connections are connected on the two ends of power supply, in the branch road at insulation electric boiling plate heating element place, be serially connected with a key switch; Be provided with the delivery port that is communicated with the inner chamber of inner bag in the middle and upper part of described main body, be provided with long Hu Zui at water outlet, and be provided with capping at long Hu Zui, long Hu Zui (17) is covered fully.
The long-acting thermal-insulating formula thermostatic control electric heater of described a kind of middle part water outlet arranges heat insulation cavity between the outer wall of inner bag and outer casing inner wall, establish foam layer in this heat insulation cavity.
The long-acting thermal-insulating formula thermostatic control electric heater of described a kind of middle part water outlet, thermal store is connected, forms the dispersion shape syndeton by six connectors with heating element to boil water, insulation electric boiling plate heating element, respectively be provided with a heat conduction tie point in three connectors therein, closely be connected with inner bag by described heat conduction tie point, make thermal store and inner bag form the point-like syndeton.
The long-acting thermal-insulating formula thermostatic control electric heater of described a kind of middle part water outlet, described main body is the kettle body, and described lid is pot lid, and the kettle body is connected with pot lid by screw thread; Inner bag opening part at the kettle body is provided with internal thread, is provided with external screw thread in the lower end of pot lid; On pot lid, also be provided with the O RunddichtringO.
The long-acting thermal-insulating formula thermostatic control electric heater of described a kind of middle part water outlet, described kettle body be shaped as truncated cone, square, polygonal cylindricality or cydariform.
The long-acting thermal-insulating formula thermostatic control electric heater of described a kind of middle part water outlet is provided with handle at the sidewall of described shell.
The beneficial effects of the utility model are:
1, the related electric heater of the utility model comprises heater and thermal store, the heater of electric heater and inner bag close contact, thermal store be looped around heater around, thermal store is connected, forms the dispersion shape syndeton by some connectors with heater, in section connecting element, be provided with heat conduction tie point, closely be connected with inner bag by described heat conduction tie point, make thermal store and inner bag form the point-like syndeton.Heater is in to the inner bag heating, also thermal store is heated, when the water in being heated to inner bag seethes with excitement (100 ℃), the heater stopped heating, this moment, thermal store also was warming up to 100 ℃, because inner bag and boiling water drop in temperature wherein are very fast, thermal store continues inner bag is heated by heat conduction tie point.Because the characteristic of thermal store self-heat conserving, the heat energy of thermal store storage can only conduct tie point by heat and heat to inner bag, therefore, thermal store to inner bag and the boiling water heating be slow and lasting, have the beneficial effect of long-acting thermal-insulating.Therefore with boiled after 100 ℃, water temperature remains on required optimal temperature (being phase transformation temperature points) always, heating boiling water again needn't consume energy, when water temperature drops to a certain design temperature, the insulation electric boiling plate heating element work of heater, after rising to more than 90 degree, again enter the state of insulation, reach energy-saving heat preserving and reduce as far as possible that the water heating for multiple times of will making tea is contributed trace element useful in the dehydration, the purpose of " fresh " of the water that keeps making tea.
2, owing in the improvement technical scheme of the present utility model, forming heat insulation cavity between described inner bladder outer wall and the shell, in heat insulation cavity, establish foam layer.Thereby greatly reduce the heat loss of inner bag, strengthen the heat insulation effect of kettle body when the temperature remains within the normal range at shell.
3, owing in the improvement technical scheme of the present utility model, being provided with the delivery port that is communicated with the inner chamber of inner bag at described main body middle part, be provided with proboscis at delivery port, the place is provided with capping at proboscis, and is provided with capping at long Hu Zui.The middle part arranges long Hu Zui, and is relatively laborsaving during this structure pouring, simultaneously, makes tea at a distance when being convenient to make tea, and avoids the hot gas of boiling water to cover people's sight line, thereby prevents that the water in the teacup from overflowing, and is provided with capping at long Hu Zui, much cleaner, heat insulation effect is also better.
Description of drawings
Fig. 1 is the structural representation of the utility model specific embodiment 1.
Fig. 2 is the electric heater structure schematic diagram of the utility model specific embodiment.
Fig. 3 is the structural representation of the utility model specific embodiment 2.
Fig. 4 is the structural representation of the utility model specific embodiment 3.
Fig. 5 is the circuit theory diagrams of electric heater of the present utility model.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail:
Specific embodiment 1:
See figures.1.and.2, the present embodiment comprises main body and lid, and main body comprises shell 11 and is arranged at the inner bag 12 of enclosure, is provided with electric heater 3 in the bottom of main body; Electric heater 3 comprises heating element 3-1 to boil water, insulation electric boiling plate heating element 3-5 and thermal store 3-2, the heating element 3-1 to boil water of electric heater 3, insulation electric boiling plate heating element 3-5 and inner bag 12 close contacts, thermal store 3-2 is looped around heating element 3-1 to boil water, around the insulation electric boiling plate heating element 3-5, thermal store 3-2 is by some connector 3-3 and heating element 3-1 to boil water, insulation electric boiling plate heating element 3-5 connects, form the dispersion shape syndeton, in section connecting element 3-3, be provided with heat conduction tie point 3-4, closely be connected with inner bag 12 by described heat conduction tie point 3-4, both form the point-like syndeton to make thermal store 3-2 and inner bag 12; Described main body is the kettle body 1 of electric kettle, described lid is the pot lid 2 of electric kettle, is provided with the delivery port 16 that is communicated with the inner chamber of inner bag 12 in the middle and upper part of described kettle body 1, is provided with long kettle mouth 17 at delivery port 16 places, and be provided with capping 18 at long kettle mouth 17, long kettle mouth 17 is covered fully.
In the present embodiment:
Thermal store 3-2 is connected, forms the dispersion shape syndeton by six connector 3-3 with heating element 3-1 to boil water, insulation electric boiling plate heating element 3-5, respectively be provided with a heat conduction tie point 3-4 among three connector 3-3 therein, closely be connected with inner bag 12 by described heat conduction tie point 3-4, both form the point-like syndeton to make thermal store 3-2 and inner bag 12.
Described kettle body 1 be shaped as truncated cone, square, polygonal cylindricality or cydariform.
The operation principle of the present embodiment is: heater is in to the inner bag heating, also thermal store is heated, when the water in being heated to inner bag seethes with excitement (100 ℃), the heater stopped heating, this moment, thermal store also was warming up to 100 ℃, because inner bag and boiling water drop in temperature wherein are very fast, so thermal store continues inner bag is heated by heat conduction tie point.Because the characteristic of thermal store self-heat conserving, the heat energy of thermal store storage can only conduct tie point by heat and heat to inner bag, therefore, thermal store to inner bag and boiling water heating be slow and lasting, therefore with boiled after 100 ℃, water temperature remains on required optimal temperature (being phase transformation temperature points) always, the heating boiling water that needn't consume energy again within a certain period of time, not only energy-conservation but also can avoid with the water heating for multiple times of making tea contribute trace element useful in the dehydration, " fresh " of the water that keeps making tea.
Specific embodiment 2:
With reference to Fig. 3, the characteristics of the present embodiment are:
Between the outer wall of inner bag 12 and shell 11 inwalls, heat insulation cavity is set, in this heat insulation cavity, establishes foam layer 14.Thereby greatly reduce the heat loss of inner bag, the temperature remains within the normal range to make shell simultaneously.
All the other are with specific embodiment 1.
Specific embodiment 3:
With reference to Fig. 4, the characteristics of the present embodiment are:
The characteristics of the present embodiment are: the sidewall at described shell 11 is provided with handle 25.Other are identical with specific embodiment 2.
The thin stainless steel material of kettle body and function of the long-acting thermal-insulating formula electric kettle of the middle part water outlet that specific embodiment 1 to 3 relates to is made, and shape has truncated cone, also can make other polygonal columns, drum type or other shapes.The water holding volume of kettle has 0.48～1.96L plurality of specifications.
Specific embodiment 4:
The characteristics of the present embodiment 4 are: the syndeton between kettle body 1 and the pot lid 2 is conventional electric hot water spring snap type syndeton, and namely the rear end of pot lid 2 and kettle body 1 are for rotary type is connected, and the front end of pot lid 2 is connected for the push type snap-on with kettle body 1.Other are identical with specific embodiment 1 to 3 arbitrary embodiment.
Specific embodiment 5:
The characteristics of the present embodiment 5 are: the utility model can also be made the heat-storage heat-preserving formula electric heating kettle with long-acting thermal-insulating structure of top water outlet, be that described main body is the pot body of electric heating kettle, described lid is the pot cover of electric heating kettle, is provided with the delivery port that is communicated with the inner chamber of pot body inner bag at the pot body; Be provided with proboscis at water outlet, and be provided with capping at proboscis, proboscis is covered fully, the pot body is provided with carrying handle.
Have the work loop of two-way heating element to be attempted by both ends of power referring to Fig. 5, wherein one the tunnel is heating element EH1(3-1 to boil water), another road is insulation electric boiling plate heating element EH2(3-5).At heating element EH1(3-1 to boil water) in the loop, be serially connected with temperature controller ST2 to boil water, this temperature controller ST1 to boil water disconnects when water temperature reaches boiling point.At insulation electric boiling plate heating element EH2(3-5) in the loop, be serially connected with insulation temperature controller ST2, when this insulation temperature controller ST2 is lower than 85 ℃ or 95 ℃ in water temperature, connects and carry out Heat preservation work, to keep the suitable temperature range of making tea of water temperature about 85 ℃ or 95 ℃.In insulation electric boiling plate heating element EH2 loop, be serially connected with work selection key SB.At heating element EH1(3-1 to boil water) and insulation electric boiling plate heating element EH2(3-2) two ends respectively and be connected to indicator lamp HL1 to boil water with resistance R 1 series arm, be incubated indicator lamp HL2 and resistance R 2 series arms.In the work loop of power supply and two-way heating element, be serially connected with fuse FU.
Described temperature controller ST1(3-1 to boil water), heating element EH1(3-2 to boil water), insulation temperature controller ST2 and insulation electric boiling plate heating element EH2 and inner bag close contact.Described insulation electric boiling plate heating element EH2 adopts following a kind of: 1. stainless steel electric boiling plate (mica electric heating plate), 2. ceramic electric heating plate, 3. cast aluminium electric boiling plate, 4. cast copper electric boiling plate.
Described stainless steel electric boiling plate is that resistive heater is wrapped in a kind of electric heating device on the micarex (mica sheet).Micarex (mica sheet) heater utilizes the good insulating properties of micarex (mica sheet) and its resistance to elevated temperatures, and it is take micarex (sheet) as skeleton and insulating barrier, is aided with galvanized sheet or corrosion resistant plate is made supportive protection.
The ceramic electric heating plate, energising rear surface heating and not charged is widely used in light, heavy industry and the home electrical heater, its profile texture as domestic porcelain, but be embedded with heating wire inside.Because used ceramic material has good electrical insulation properties under operating temperature, so the surface is not charged, leakage current is little during work, and is safe and reliable.
Cast aluminium, cast copper electric boiling plate can be divided into die-cast and casting.Adopt high-purity aluminium block, copper billet when casting is produced, through high-temperature smelting pot with it by the solid-state liquid state that becomes, then being injected into has had in the mould that installs heating tube, behind cooling forming, carries out fine finishining again and is made.
The above; it only is the better specific embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and utility model design thereof, all belonged to protection domain of the present utility model.
Claims (6)
1. the long-acting thermal-insulating formula thermostatic control electric heater of a middle part water outlet comprises main body and lid, and it is characterized in that: main body comprises shell (11) and is arranged at the inner bag (12) of enclosure, is provided with electric heater (3) in the bottom of main body; Electric heater (3) comprises heating element to boil water (3-1), insulation electric boiling plate heating element (3-5) and thermal store (3-2), the heating element to boil water (3-1) of electric heater (3), insulation electric boiling plate heating element (3-5) and inner bag (12) close contact, thermal store (3-2) is looped around heating element to boil water (3-1), around the insulation electric boiling plate heating element (3-5), thermal store (3-2) is by some connectors (3-3) and heating element to boil water (3-1), insulation electric boiling plate heating element (3-5) connects, form the dispersion shape syndeton, in section connecting element (3-3), be provided with heat conduction tie point (3-4), closely be connected with inner bag (12) by described heat conduction tie point (3-4), both form the point-like syndeton to make thermal store (3-2) and inner bag (12); Described heating element to boil water (3-1), insulation electric boiling plate heating element (3-5) are connected with temperature controller separately respectively and are formed two heating element branch roads, these two heating element branch circuit parallel connections are connected on the two ends of power supply, in the branch road at insulation electric boiling plate heating element (3-5) place, be serially connected with a key switch; Be provided with the delivery port (16) that is communicated with the inner chamber of inner bag (12) in the middle and upper part of described main body, locate to be provided with long Hu Zui (17) at delivery port (16), and be provided with capping (18) at long Hu Zui (17), long Hu Zui (17) is covered fully.
2. the long-acting thermal-insulating formula thermostatic control electric heater of a kind of middle part water outlet according to claim 1 is characterized in that: between the outer wall of inner bag (12) and shell (11) inwall heat insulation cavity is set, establishes foam layer (14) in this heat insulation cavity.
3. the long-acting thermal-insulating formula thermostatic control electric heater of a kind of middle part water outlet according to claim 1 and 2, it is characterized in that: thermal store (3-2) is connected, forms the dispersion shape syndeton by six connectors (3-3) with heating element to boil water (3-1), insulation electric boiling plate heating element (3-5), respectively be provided with therein a heat conduction tie point (3-4) in three connectors (3-3), closely be connected with inner bag (12) by described heat conduction tie point (3-4), both form the point-like syndeton to make thermal store (3-2) and inner bag (12).
4. the long-acting thermal-insulating formula thermostatic control electric heater of a kind of middle part water outlet according to claim 1, it is characterized in that: described main body is kettle body (1), and described lid is pot lid (2), and kettle body (1) is connected with pot lid (2) by screw thread; Inner bag (12) opening part in kettle body (1) is provided with internal thread, is provided with external screw thread in the lower end of pot lid (2); On pot lid (2), also be provided with O RunddichtringO (24).
5. the long-acting thermal-insulating formula thermostatic control electric heater of a kind of middle part water outlet according to claim 1 is characterized in that: described kettle body (1) be shaped as truncated cone, square, polygonal cylindricality or cydariform.
6. the long-acting thermal-insulating formula thermostatic control electric heater of a kind of middle part water outlet according to claim 1, it is characterized in that: the sidewall at described shell (11) is provided with handle (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220453767.6U CN202761015U (en) | 2012-09-06 | 2012-09-06 | Long-acting heat preservation type constant temperature control electric water heater with water coming out of central section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220453767.6U CN202761015U (en) | 2012-09-06 | 2012-09-06 | Long-acting heat preservation type constant temperature control electric water heater with water coming out of central section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202761015U true CN202761015U (en) | 2013-03-06 |
Family
ID=47767630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220453767.6U Expired - Lifetime CN202761015U (en) | 2012-09-06 | 2012-09-06 | Long-acting heat preservation type constant temperature control electric water heater with water coming out of central section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202761015U (en) |
-
2012
- 2012-09-06 CN CN201220453767.6U patent/CN202761015U/en not_active Expired - Lifetime
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |