CN2670826Y - Heat storable electric water heater - Google Patents
Heat storable electric water heater Download PDFInfo
- Publication number
- CN2670826Y CN2670826Y CNU2003201297366U CN200320129736U CN2670826Y CN 2670826 Y CN2670826 Y CN 2670826Y CN U2003201297366 U CNU2003201297366 U CN U2003201297366U CN 200320129736 U CN200320129736 U CN 200320129736U CN 2670826 Y CN2670826 Y CN 2670826Y
- Authority
- CN
- China
- Prior art keywords
- heat
- electric heater
- accumulation
- porcelain bushing
- ceramic core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 238000009413 insulation Methods 0.000 claims description 32
- 238000009825 accumulation Methods 0.000 claims description 31
- 229910052573 porcelain Inorganic materials 0.000 claims description 28
- 239000000919 ceramic Substances 0.000 claims description 27
- 230000008859 change Effects 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 8
- 229910000632 Alusil Inorganic materials 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 4
- 230000005611 electricity Effects 0.000 abstract description 14
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000004321 preservation Methods 0.000 abstract 3
- 239000012782 phase change material Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 229910052571 earthenware Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model relates to a heat storable electric water heater, which is characterized in that the heat storable electric water heater comprises a heat preservation housing, a temperature control/ time control device arranged on the outer wall of the heat preservation housing, a metal double layer vacuum barrel arranged in the heat preservation housing, a heat exchange coil pipe which is coiled on the outer wall of the vacuum barrel, a heat resistant protecting jacket arranged in the vacuum barrel, a high temperature resistant and corrosion resistant container arranged in the heat resistant protecting jacket, a plurality of high temperature phase-change heat-storing materials arranged in the high temperature resistant and corrosion resistant container, an electric heater embedded in the high temperature phase-change materials and connected with the temperature control / time control device by conducting lines, a water inlet pipe with a valve connected with the water inlet of the heat exchange coil pipe and a water outlet pipe one side of which connected to the water outlet of the heat exchange coil pipe and the other side connected to the cold water supply pump and the water using devices. The utility model stores a good deal of heat energy in the period of low electricity at night and doesn't consume electricity in the period of high electricity consumption, which uses the hot water conveniently.
Description
Technical field
The utility model relates to a kind of water heater, particularly about a kind of high-temperature phase-change formula accumulation of heat electric heater.
Background technology
At present, China's electric utility has obtained significant progress, generated energy has occupied the second place of the world with the installation total capacity, meanwhile, new problem has appearred in development of electric power industry and electricity needs variation: the one, and whole nation generating utilizes hourage to descend year by year, generating capacity fails to make full use of, and some new operation units is arranged even be in idle state; The 2nd, the peak load of electrical network increases very fast, and the network load rate reduces year by year.Huge electric power peak-valley difference and peak value growth rate must propose very high requirement to power peak regulation, and the safe operation of electrical network has been constituted certain threat.In order to alleviate the pressure of peak load of grid, various places have been developed various peak load stations in succession, as gas turbine power plant, hydroenergy storage station etc., but this does not fundamentally solve the contradiction that causes the electricity consumption peak-valley difference, and improving constantly along with economic development, living standards of the people, resident's household electricity sustainable growth will further strengthen the peak-valley difference of electrical network power load.Address this problem, have only and carry out the peak and valley time electricity price, and greatly develop the accumulation of heat consumer, make the cheap low ebb electricity of resident's more than enough usefulness of energy, electrical network is realized peak load shifting with this.
Research topic of the present utility model concentrates on domestic established huge electric heater market, and existing electric heater does not generally have heat accumulation function, and the resident can't enjoy the material benefit that the tou power price policy is brought, and power supply enterprise also is difficult to take this to realize the electrical network peak load shifting.
Summary of the invention
The purpose of this utility model provide a kind of can accumulation of heat when the low power consumption electricity price is cheap, when the resident needs with hot water accumulation of heat electric heater easily.
For achieving the above object, the utility model is taked following technical scheme: a kind of accumulation of heat electric heater is characterized in that it comprises: a corrosion-and high-temp-resistant container; Some high-temperature phase change heat accumulation materials, it is arranged in the described corrosion-and high-temp-resistant container; One electric heater, it is embedded in the described high-temperature phase change heat accumulation material; One thermal insulation layer, it is arranged on outside the described corrosion-and high-temp-resistant container; One insulation shell, it is arranged on outside the described thermal insulation layer; One temperature control/time controller is arranged on described insulation shell outer wall, and described electric heater is by lead and described temperature control/time controller; One heat exchange coil, its dish are located between described thermal insulation layer and the described insulation shell; One is provided with valvular water inlet pipe, and it connects the water inlet of described heat exchange coil; One is provided with valvular outlet pipe, and the one end connects the delivery port of described heat exchange coil, and the other end connects cold water upper hose and water device.
One heat-resisting protective cover is set between described corrosion-and high-temp-resistant container and described thermal insulation layer.
Described thermal insulation layer is a pair of lamina metal vacuum bucket.
Described corrosion-and high-temp-resistant container is made by ceramic material.
Described high-temperature phase change heat accumulation material is an alusil alloy.
Described electric heater is the porcelain bushing electric heater, described porcelain bushing electric heater comprises the porcelain bushing of bottom end seal, be arranged on the ceramic core in the described porcelain bushing, be wrapped in the resistance wire of described ceramic core outer wall, and be arranged on the heat conductive insulating powder between described ceramic core and the described porcelain bushing.
The utility model is owing to take above design, it has the following advantages: 1, the utility model adopts a large amount of high-temperature phase change heat accumulation materials in electric heater, therefore can be under the less situation of appearance and size, store a large amount of heat energy in the night dip electricity period by material phase transformation, and not electricity consumption when peak of power consumption, just can use hot water easily, it not only can realize the electricity consumption policy of national peak load shifting, and ordinary people is received more tangible benefits from the peak and valley time electrovalence policy conscientiously, the utility model electricity consumption planning for the state and the people provides a vast potential for future development.2, the utility model adopts pottery as corrosion-and high-temp-resistant container splendid attire high-temperature phase change heat accumulation material, and it has the good insulation performance heat transmission function, and the heat-storing material that can not be undergone phase transition corrosion.3, the utility model adopts the double-level-metal vacuum barrel both can protect the thermal loss of 500～600 ℃ of high temperature of heat-storing material in the vacuum barrel little, and the heat exchange coil that again can the assurance dish be located at the vacuum barrel outer wall can be heated.4, the utility model is provided with the heat-resisting protective cover in the ceramic vessel outside, and it not only can protect ceramic vessel not to be damaged, and can bear bigger pressure, is not crushed with protection double-level-metal vacuum barrel.5, the utility model adopts the porcelain bushing electric heater, and it can directly be imbedded in the heat-storing material, realizes inner heating, thereby can reduce scattering and disappearing of heat in the heating process, improves the utilization rate of the efficiency of heating surface and electric energy.6, the earthenware electric heater of the utility model design; outside wall surface at ceramic core is twined resistance wire; between ceramic core and porcelain bushing, fill the heat conductive insulating powder; both can guarantee heat transfer efficiency effectively; the protective resistance silk has greatly prolonged the service life of electric heater at high temperature not by acid, alkali, salt, metal and metal alloy corrosion or erosion effectively again.The utility model volume simple in structure is little, efficiency of heating surface height, and accumulation of heat is effective, and it has boundless developing prospect as a kind of New-type water heater.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is the utility model electric heater structural representation
Fig. 3 is the local enlarged diagram of ceramic core outer wall helical groove in the utility model electric heater
The specific embodiment
As shown in Figure 1, the utility model comprises a corrosion-and high-temp-resistant container 1, in container 1, be provided with some high-temperature phase change heat accumulation materials 2, in high-temperature phase change heat accumulation material 2, be embedded with an electric heater 3, be outside equipped with a thermal insulation layer 4 at container 1, be outside equipped with an insulation shell 5 at thermal insulation layer 4, be provided with one temperature control/time controller 6 at insulation shell 5 outer walls, electric heater 3 is connected with temperature control/time controller 6 by lead, dish is provided with a heat exchange coil 7 between thermal insulation layer 4 and insulation shell 5, one end that is provided with the water inlet pipe 9 of valve 8 is connected the water inlet of heat exchange coil 7, and the other end can connect the water source.One end that is provided with the outlet pipe 11 of safety valve 10 is connected the delivery port of described heat exchange coil 7, and the other end connects water devices such as cold water upper hoses 13 and shower nozzle 14 by triple valve 12.
In the foregoing description; corrosion-and high-temp-resistant container 1 can adopt ceramic material to make, and also can take other corrosion-and high-temp-resistant material to make, if adopt ceramic material; one heat-resisting protective cover 15 can be set between container 1 and thermal insulation layer 4, not collided with protection ceramic vessel 1.The material of protective sleeve 15 can adopt heat-resisting steel material, also can take other material.
In the foregoing description, thermal insulation layer 4 can be taked pair of lamina metal vacuum bucket, and it had both had effect of heat insulation preferably, again can be with part heat transferred heat exchange coil 7.In addition, thermal insulation layer 4 can also be taked other structure and material.Insulation shell 5 can adopt various insulation material of the prior art.
In the foregoing description, high-temperature phase change heat accumulation material 2 can be taked various materials, such as: adopt alusil alloy, its phase transition temperature is at 575 ℃～585 ℃.
As shown in Figure 2, electric heater 3 of the present utility model can adopt custom-designed earthenware electric heater, it comprises the porcelain bushing 31 of bottom end seal, be arranged on the ceramic core 32 in the porcelain bushing 31, be wrapped in the resistance wire 33 of ceramic core outside wall surface, and be filled in the heat conductive insulating powder 34 between ceramic core 32 and the porcelain bushing 31.
In the above-mentioned electric heater 3, as shown in Figure 3, the outer wall of ceramic core 32 can be provided with helical groove 321, so just resistance wire 33 can be wrapped in the helical groove 321, when needs are changed resistance wire 33, can easily ceramic core 32 be taken out together with resistance wire 33 and put into, and can not make resistance wire 33 and heat conductive insulating powder 34 that frictional impact takes place.Simultaneously, ceramic core 32 can be hollow, fills heat conductive insulating powder 35 in ceramic core 32.Be filled between porcelain bushing 31 and the ceramic core 32, and the heat conductive insulating powder 34,35 that are filled in the ceramic core 32 can be magnesium oxide powders, or alumina powder, or other heat conductive insulating powder.
In the foregoing description, the shape and the quantity of insulation shell 5, thermal insulation layer 4, heat-resisting protective cover 15 and corrosion-and high-temp-resistant container 1 all can change, and can be circular, square, rectangle, ellipse etc. such as shape.Can be one such as container 1 again, also can be two, and the quantity of Dui Ying heat exchange coil 7, thermal insulation layer 4, heat-resisting protective cover 15 also can change with it.Electric heater 3 can adopt porcelain bushing electric heater of the present utility model, also can take other electric heater.
In the foregoing description, inlet tube and outlet tube 9,11, water intaking valve 8, safety valve 10, triple valve 12 etc. can increase as required or reduce, because the regenerator temperature of the utility model water heater is very high, safety valve 10 generally is a relief valve, to get rid of high steam.
During the utility model work, regularly start the night that temperature control/time controller 6 was arranged on the electrical network low ebb phase, can economize like this and use the peak electricity, makes full use of paddy.After electric heater 3 was connected power supply, resistance wire 33 passed to high-temperature phase change heat accumulation material 2 with heat by heat conductive insulating powder 34 and porcelain bushing 31.After the temperature of heat-storing material 2 arrived critical-temperature, the heat-storing material 2 of solid began to undergo phase transition, and when heat-storing material 2 melted fully, temperature control/time controller 6 control electric heaters 3 stopped heating.At this moment heat is mainly stored in 500～600 ℃ of latent heat modes by heat-storing material 2, and because the effect of metal vacuum bucket 2, the temperature of heat exchange coil 7 generally is no more than 200 ℃.When the needs bathing, the high-temperature water of outflow need mix the back use by regulating triple valve 12 with the cold water of cold water upper hose 13.
The various embodiments described above of the present utility model only are used to illustrate the technical solution of the utility model, and it should not limit protection domain of the present utility model, and the equivalent transformation as if the technical scheme of the various embodiments described above is made all should belong to protection domain of the present utility model.
Claims (10)
1, a kind of accumulation of heat electric heater is characterized in that it comprises:
One corrosion-and high-temp-resistant container;
Some high-temperature phase change heat accumulation materials, it is arranged in the described corrosion-and high-temp-resistant container;
One electric heater, it is embedded in the described high-temperature phase change heat accumulation material;
One thermal insulation layer, it is arranged on outside the described corrosion-and high-temp-resistant container;
One insulation shell, it is arranged on outside the described thermal insulation layer;
One temperature control/time controller is arranged on described insulation shell outer wall, and described electric heater is by lead and described temperature control/time controller;
One heat exchange coil, its dish are located between described thermal insulation layer and the described insulation shell;
One is provided with valvular water inlet pipe, and it connects the water inlet of described heat exchange coil;
One is provided with valvular outlet pipe, and the one end connects the delivery port of described heat exchange coil, and the other end connects cold water upper hose and water device.
2, a kind of accumulation of heat electric heater as claimed in claim 1 is characterized in that: a heat-resisting protective cover is set between described corrosion-and high-temp-resistant container and described thermal insulation layer.
3, a kind of accumulation of heat electric heater as claimed in claim 1 is characterized in that: described thermal insulation layer is a pair of lamina metal vacuum bucket.
4, a kind of accumulation of heat electric heater as claimed in claim 2 is characterized in that: described thermal insulation layer is a pair of lamina metal vacuum bucket.
5, as claim 1 or 2 or 3 or 4 described a kind of accumulation of heat electric heaters, it is characterized in that: described corrosion-and high-temp-resistant container is made by ceramic material.
6, as claim 1 or 2 or 3 or 4 or 5 or 6 described a kind of accumulation of heat electric heaters, it is characterized in that: described high-temperature phase change heat accumulation material is an alusil alloy.
7, a kind of accumulation of heat electric heater as claimed in claim 7, it is characterized in that: described high-temperature phase change heat accumulation material is an alusil alloy.
8, as claim 1 or 2 or 3 or 4 or 7 described a kind of accumulation of heat electric heaters, it is characterized in that: described electric heater is the porcelain bushing electric heater, described porcelain bushing electric heater comprises the porcelain bushing of bottom end seal, be arranged on the ceramic core in the described porcelain bushing, be wrapped in the resistance wire of described ceramic core outer wall, and be arranged on the heat conductive insulating powder between described ceramic core and the described porcelain bushing.
9, a kind of accumulation of heat electric heater as claimed in claim 5, it is characterized in that: described electric heater is the porcelain bushing electric heater, described porcelain bushing electric heater comprises the porcelain bushing of bottom end seal, be arranged on the ceramic core in the described porcelain bushing, be wrapped in the resistance wire of described ceramic core outer wall, and be arranged on the heat conductive insulating powder between described ceramic core and the described porcelain bushing.
10, a kind of accumulation of heat electric heater as claimed in claim 6, it is characterized in that: described electric heater is the porcelain bushing electric heater, described porcelain bushing electric heater comprises the porcelain bushing of bottom end seal, be arranged on the ceramic core in the described porcelain bushing, be wrapped in the resistance wire of described ceramic core outer wall, and be arranged on the heat conductive insulating powder between described ceramic core and the described porcelain bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201297366U CN2670826Y (en) | 2003-12-22 | 2003-12-22 | Heat storable electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201297366U CN2670826Y (en) | 2003-12-22 | 2003-12-22 | Heat storable electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2670826Y true CN2670826Y (en) | 2005-01-12 |
Family
ID=34477284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201297366U Expired - Fee Related CN2670826Y (en) | 2003-12-22 | 2003-12-22 | Heat storable electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2670826Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183059A (en) * | 2011-04-21 | 2011-09-14 | 刘春元 | Radiating unit of directly-heated type electric heater and manufacturing method of radiating unit |
| CN102230643A (en) * | 2011-06-24 | 2011-11-02 | 东莞市新时代新能源科技有限公司 | Novel multifunctional range hood |
| CN102374812A (en) * | 2010-08-10 | 2012-03-14 | 同济大学 | Solar high-temperature phase change thermal storage device |
| CN104382492A (en) * | 2014-10-28 | 2015-03-04 | 蔡徐德 | Instant-boiled water dispenser heating unit ceramic external member |
| CN104566679A (en) * | 2013-10-28 | 2015-04-29 | 珠海格力电器股份有限公司 | Compressor and air conditioner with same |
| CN104713396A (en) * | 2013-12-12 | 2015-06-17 | 珠海格力电器股份有限公司 | Heat storage device and air conditioner with same |
| CN105222345A (en) * | 2015-10-27 | 2016-01-06 | 江苏启能新能源材料有限公司 | A kind of phase-change heat-storage material heating system |
| WO2016011864A1 (en) * | 2014-07-24 | 2016-01-28 | 台州市大江实业有限公司 | Phase-change thermal accumulator |
| CN105674781A (en) * | 2016-01-14 | 2016-06-15 | 南京净环热冶金工程有限公司 | Novel low temperature heat accumulator element |
| CN113375492A (en) * | 2021-05-31 | 2021-09-10 | 中国科学院理化技术研究所 | Vacuum heat-insulation type heat storage/cooling device |
| WO2023122507A3 (en) * | 2021-12-20 | 2023-10-26 | Gyft Labs | Thermal energy storage and power generation system |
-
2003
- 2003-12-22 CN CNU2003201297366U patent/CN2670826Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374812A (en) * | 2010-08-10 | 2012-03-14 | 同济大学 | Solar high-temperature phase change thermal storage device |
| CN102183059A (en) * | 2011-04-21 | 2011-09-14 | 刘春元 | Radiating unit of directly-heated type electric heater and manufacturing method of radiating unit |
| CN102230643A (en) * | 2011-06-24 | 2011-11-02 | 东莞市新时代新能源科技有限公司 | Novel multifunctional range hood |
| CN104566679A (en) * | 2013-10-28 | 2015-04-29 | 珠海格力电器股份有限公司 | Compressor and air conditioner with same |
| CN104713396A (en) * | 2013-12-12 | 2015-06-17 | 珠海格力电器股份有限公司 | Heat storage device and air conditioner with same |
| CN105318764B (en) * | 2014-07-24 | 2017-06-13 | 台州市大江实业有限公司 | A kind of phase change heat accumulator |
| WO2016011864A1 (en) * | 2014-07-24 | 2016-01-28 | 台州市大江实业有限公司 | Phase-change thermal accumulator |
| CN105318764A (en) * | 2014-07-24 | 2016-02-10 | 台州市大江实业有限公司 | Phase-change heat accumulator |
| CN104382492A (en) * | 2014-10-28 | 2015-03-04 | 蔡徐德 | Instant-boiled water dispenser heating unit ceramic external member |
| CN105222345A (en) * | 2015-10-27 | 2016-01-06 | 江苏启能新能源材料有限公司 | A kind of phase-change heat-storage material heating system |
| CN105674781A (en) * | 2016-01-14 | 2016-06-15 | 南京净环热冶金工程有限公司 | Novel low temperature heat accumulator element |
| CN113375492A (en) * | 2021-05-31 | 2021-09-10 | 中国科学院理化技术研究所 | Vacuum heat-insulation type heat storage/cooling device |
| CN113375492B (en) * | 2021-05-31 | 2022-04-22 | 中国科学院理化技术研究所 | Vacuum heat-insulation type heat storage/cooling device |
| WO2023122507A3 (en) * | 2021-12-20 | 2023-10-26 | Gyft Labs | Thermal energy storage and power generation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |