CN202660820U - Evaporation type cooling device - Google Patents
Evaporation type cooling device Download PDFInfo
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- CN202660820U CN202660820U CN 201120461271 CN201120461271U CN202660820U CN 202660820 U CN202660820 U CN 202660820U CN 201120461271 CN201120461271 CN 201120461271 CN 201120461271 U CN201120461271 U CN 201120461271U CN 202660820 U CN202660820 U CN 202660820U
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- evaporative cooler
- exchanger assembly
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Abstract
The utility model discloses an evaporation type cooling device. The evaporation type cooling device comprises a tank body, and a heat exchanger assembly, a fan and a spraying system which are positioned in the tank body, wherein the spraying system is positioned above the heat exchanger assembly and is used for spraying cooling liquid to the outer surface of the heat exchanger assembly; the fan is positioned above the spraying system and is used for discharging cooling liquid steam which flows through the heat exchanger assembly out of the tank body; moreover, the heat exchanger assembly comprises a plurality of interlayer heat exchange plates; and inner space is reserved in the interlayer heat exchange plates, refrigerating fluid can flow in the interlayer heat exchange plates, and the peripheries of the interlayer heat exchanger plates are closed and are provided with refrigerating fluid inlets and outlets through which the refrigerating fluid can flow. By the evaporation type cooling device with the structure, a large amount of raw materials and space can be saved, and the using and transportation cost can be reduced obviously; and the cooling device is easy to clean.
Description
Technical field
The present invention relates to field of heat exchangers, particularly relate to a kind of cooling evaporative cooler.
Background technology
Cooling device for example condenser is one of main heat-exchange apparatus of refrigeration system, and its effect is that high temperature, superheated vapor that compressor is discharged are cooled to liquid refrigerant.Different according to cooling medium and the type of cooling, condenser commonly used generally can be divided into three kinds of water-cooled (being divided into again shell-tube type, bushing type, immersion etc.), air-cooled type (or claiming air-cooled) and vaporation-types (cold-producing medium is subject to the cooling of water and air simultaneously at in-tube condensation outside the pipe).
Compare with front two kinds of condensers, evaporative condenser has the advantages such as water saving, economize on electricity and compact conformation, floor space are little, and its circulating water flow only is 10% of water cooled condenser, and the energy consumption of water pump also obviously reduces.Therefore, from 20 century 70s, developed country begins to replace traditional water cooled condenser with evaporative condenser in the world, and is widely used in the industrial departments such as electric power, chemical industry, iron and steel, food.
The operation principle of evaporative condenser as shown in Figure 1, cooling water is delivered to the top of condenser coil 108 by feeding spraying pump 107, spray to the past current downflow of condenser pipe group outer surface formation moisture film through sprinkling equipment 102, absorb heat when evaporating owing to part water in the moisture film and make the refrigerant vapour of the interior high temperature of pipe, high pressure be condensed into liquid.Air is then entered by the air inlet 105 of casing 109 belows, upwards flows along the bottom of condenser pipe group, and condenser coil 108 outer steam are taken away.Unevaporated water still is back at the bottom of the case in the pond 106, according to this periodic duty.Simultaneously, the air blast 101 on top is kept the negative pressure state on condenser top, impels air upwards to flow, and strengthens cooling effect.
Yet there are some technological deficiencies that are difficult to overcome in traditional evaporative condenser.
At first, condenser coil 108 must have enough wall thickness in order to keep its intensity, and when pipe was carried out bending machining, elbow part must have certain radius that curves like this, and this is just so that the size of the condenser coil 108 that machines can be very large.And in order to adapt to the large-size of condenser coil 108, the overall dimensions of feeding spraying pump 107, air blast 101, sprinkling equipment 102 and condenser also all needs corresponding increase, thereby causes the size of final products and quality all very large.This not only can cause raw-material a large amount of waste, and because evaporative condenser usually needs to be lifted into eminence, for example the significant lifting of installation cost is also caused in the top of building therefore.
Secondly, in the process that the current that spray flow down along tube wall, on the tube wall lower surface of condenser coil 108, can there be static water droplet, be easy to generate incrustation scale, thereby greatly affects the heat exchange efficiency of coil pipe.On the other hand because the gap between each pipe is very limited, in any case and design the arranging of pipe, all will inevitably form the dead angle of flushing, therefore, to condenser coil 108 surperficial incrustation scales with that spot is washed and cleaning becomes is very difficult.Common way is, each row's condenser coil 108 is removed from whole condenser, cleans these condenser coils 108 to be installed after finishing again and goes back.Because as described in full, evaporative condenser usually needs to be lifted into eminence, this has also limited the use of evaporative condenser just so that the maintenance cost of equipment becomes very high.
Except the top evaporative condenser of mentioning of giving an example, common cooling evaporative cooler also comprises closed cooling tower.The heat exchange body structure of traditional closed cooling tower is similar to evaporative condenser, and what also adopt is the structure that is similar to coil pipe, therefore also can have above-mentioned technical problem.
Summary of the invention
Purpose of the present invention is exactly to solve above-mentioned technical problem by a kind of novel cooling evaporative cooler is provided.
According to an aspect of the present invention, provide a kind of cooling evaporative cooler, comprise casing and the heat exchanger assembly, blower fan, the spray system that are arranged in described casing.Wherein, spray system is positioned at the heat exchanger assembly top, be used for spraying cooling fluid to the outer surface of heat exchanger assembly, blower fan is positioned at the top of spray system, is used for going out casing through the cooling fluid vapor exhaust of heat exchanger assembly, in addition, heat exchanger assembly comprises several interlayer heat exchanger plates, and the interlayer heat exchanger plates has the inner space, flows therein for cold-producing medium, its periphery seals, and comprises refrigerant inlet and the outlet that flows into and flow out for cold-producing medium at the periphery of sealing.Cooling fluid wherein comprises water.In addition, it should be noted that the top that said blower fan here is positioned at spray system refers to that the height of blower fan is higher than spray system, but not refer to be positioned at spray system directly over.In fact, as mentioned below, the technical scheme that blower fan is positioned at spray system side top is one of preferred embodiment of the present invention just.
Alternatively, the interlayer heat exchanger plates is roughly along the direction setting that is parallel to from the heat exchanger assembly to the blower fan.Such setting can be without hindrance so that come from that the airflow smooth ground in air port flows through from the surface of interlayer heat exchanger plates, thereby improve the efficient of heat exchange.And if as the arrangement of coil pipe in traditional coil condenser, the interlayer heat exchanger plates is arranged to the direction of blower fan transverse to heat exchanger assembly, will greatly affect so air current flow, thereby so that heat exchange efficiency greatly reduce.
Alternatively, the interlayer heat exchanger plates comprises two sheet metals, and periphery has welding portion.
Alternatively, comprise several binding sites between two sheet metals.Further, these binding sites can evenly distribute, or adopt other distribution form.Again further, these binding sites can comprise welding portion, for example form by mash welder or laser welder.
Alternatively, the entrance of cold-producing medium can be higher than outlet, is convenient to like this flow out after the condensation of refrigerant.
Alternatively, below heat exchanger assembly, can also be provided with packed tower.
Wherein, cooling evaporative cooler can be evaporative condenser, also can be closed cooling tower.
Description of drawings
What Fig. 1 showed is the fundamental diagram of existing cooling evaporative cooler (for example evaporative condenser);
Fig. 2 shows is front view according to the interlayer heat exchanger plates that adopts in the evaporative condenser of the present invention;
Fig. 3 shows is that as shown in Figure 2 interlayer heat exchanger plates is along the partial cross-sectional view of A-A direction;
Fig. 4 shows is that evaporative condenser according to a preferred embodiment of the present invention is by the stereogram of partly cut-away;
Fig. 5 shows is that as shown in Figure 4 evaporative condenser is by the stereogram of partly cut-away, its heat exchanger assembly adopts vertical arrangement, and first interlayer heat exchanger plates of heat exchanger assembly also cut a part, article one gas channel when working so that described evaporative condenser to be shown;
What Fig. 6 showed is the evaporative condenser that heat exchanger assembly adopts the lateral arrangement scheme;
Fig. 7 show according to the evaporative type cooler of another preferred embodiment of the present invention by the stereogram of partly cut-away.
The specific embodiment
Introduce in detail a kind of preferred embodiment of the present invention below in conjunction with accompanying drawing.
Accompanying drawing 2,3 has shown the interlayer heat exchanger plates 10 that is used for replacing in the present invention traditional condenser coil 108.As shown in Figure 2, described interlayer heat exchanger plates 10 mainly comprises two sheet metals that stack together 11, encloses periphery hermetic unit 16 in the outermost of sheet metal 11 around one, thereby so that has formed an airtight space between the double layer of metal thin plate 11.This periphery hermetic unit 16 can be by any existing routine techniques means, and for example welding, particularly laser weld form, as long as it can bear certain pressure.The large young pathbreaker of this pressure is further described hereinafter.In addition, comprising optionally on the periphery hermetic unit 16 that several are distributed in the hard point 13 on the whole girth, with sealing intensity and the reliability of further reinforcement periphery hermetic unit 16.
On periphery hermetic unit 16, also be provided with entrance 14 and the outlet 15 of cold-producing medium, confined space UNICOM between their ends and the double layer of metal thin plate 11, the other end presents tubulose, and has jockey at port, thereby can be combined with refrigerant line easily or separate.The very not special requirement in the position of refrigerant inlet 14 and outlet 15, but it is generally acknowledged, outlet 15 can be arranged on position relatively on the lower, thus the cold-producing medium that conveniently condenses into liquid flows out from exporting 15.The position of entrance 14 is relatively flexible, can arrange as required, for example is arranged on as shown in the figure and exports 15 tops with lateral edges.
And in the inside of periphery hermetic unit 16, comprise on two sheet metals 11 that several present necessarily to arrange, for example equally distributed binding site 12.As shown in Figure 3, at binding site 12 places, two sheet metals 11 closely combine, and in other parts, two sheet metals 11 are separated from each other, thereby have formed the passage 17 for flow of refrigerant.And, owing to the existence of binding site 12, formed the barrier of flow of refrigerant, thereby so that cold-producing medium has formed strong turbulent flow at binding site 12 places, thereby greatly strengthened heat exchange efficiency.
Compare with traditional condenser coil 108, owing to no longer needing to guarantee the size of coil pipe sweep, so the size of heat exchanging part greatly reduces, also further so that the size of Whole Equipment greatly reduce.So not only can save a lot of raw material, so that the manufacturing cost of equipment greatly reduces, and can significantly reduce the quality of integral device, so that particularly pinnacled installation cost greatly reduces.And the minimizing of size and quality, again so that the cost of transportation of integral device greatly reduces, this applies to special occasions for some, needs the often evaporative condenser of transportation, seems particularly important.For example, according to the characteristics of colliery industry, evaporative condenser just needed change one-stop operation place every 6-8 month, transport very frequent.At this moment, freight will seem extremely important in total running cost.
On the other hand, owing to the interlayer heat exchanger plates 10 as single heat exchange unit all is to be formed by two sheet metals 11, therefore do not have the dead angle area of the tube wall lower surface that is similar to condenser coil 108 on interlayer heat exchanger plates 10, the difficulty that forms incrustation scale increases greatly.And, even really formed incrustation scale or had dirt, had influence on heat exchange efficiency, but because the surface of interlayer heat exchanger plates 10 presents flat condition substantially, the dead angle that does not exist pipe to arrange and form, therefore by wash away the surface of interlayer heat exchanger plates 10 with clear water or cleaning agent, can remove easily incrustation scale or the dirt on surface.
From the angle of processing, the processing method of interlayer heat exchanger plates 10 is also uncomplicated.In the sealing combination of having finished periphery hermetic unit 16, and after having finished the installation of entrance 14 and outlet 15, at first form described several binding sites 12 by the select location of the equipment such as mash welder or laser welder in the middle part of interlayer heat exchanger plates 10, then by hydraulic press or aerostatic press the confined space between the sheet metal 11 is pressurizeed, so that sheet metal 11 outwards heaves, thereby form passage 17 for flow of refrigerant.As long as the size of pressurization is no more than the bond strength of periphery hermetic unit 16 and binding site 12.
Alternatively, when forming passage 17 by pressurization, can also be at the preformed mould of the arranged outside of interlayer heat exchanger plates 10, deformation with restriction sheet metal 11, prevent in when pressurization because pressure distribution local deformation inhomogeneous or that the sheet skewness causes is excessive, thereby cause production accident or bury potential safety hazard for following use.
In addition, after finishing in welding, form the passage 17 by pressurizeing, can also at first carry out punching press or make it form deformation by other method sheet metal 11, then two sheet metals 11 deformation being finished are opposed, form periphery hermetic unit 16 and binding site 12 etc. by means such as welding again.
After a plurality of interlayer heat exchanger plates 10 mentioned above are connected in parallel, have just formed the assembly of interlayer heat exchanger plates 10, thereby can be installed in the evaporative condenser.
Fig. 4 has shown according to the preferred embodiment of the present invention evaporative condenser 20.Wherein, a plurality of interlayer heat exchanger plates 10 are connected in parallel, and as heat exchanger assembly 45, these interlayer heat exchanger plates 10 share a cold-producing medium main entrance 52 and general export 51, and main entrance 52 is positioned at the highest point of heat exchanger assembly 45, and general export 51 is positioned at the lowest part of heat exchanger assembly 45.
Under heat exchanger assembly 45, be provided with and present cellular packed tower 42, it is used for secondary cooling of recirculated water, and detailed process will be described in more detail below.
Above heat exchanger assembly 45, be provided with spray system 44, it links to each other with circulating water pool 43 under being positioned at packed tower 42 by water pipe, thereby can the cold water in the circulating water pool 43 be transported to by water pump 34 top of heat exchanger assembly 45, and be sprayed on the heat exchanger assembly 45 by spray system 44, thereby realize with heat exchanger assembly 45 in the heat exchange of the cold-producing medium that flows.
Side at heat exchanger assembly 45 and packed tower 42 also includes air channel 46, flows for the damp-heat air of finishing after the heat exchange.Above air channel 46, also be provided with blower fan 40, it is ceaselessly outwards bled, and to keep the negative pressure of air outlet, is convenient to damp-heat air and flows out.
Between air channel 46 and heat exchanger assembly 45, packed tower 42, also be respectively arranged with dehydrater 41, be used for damp-heat air with the droplet that is not gasified totally of a part block, avoid it along with outside the air-flow outflow system, thereby reduced the consumption of supplementing water.
In addition, still as shown in Figure 4, evaporative condenser 20 also comprises the accessories such as casing 31, access door 32, water level controller 33 and electronic scale remover 35.These accessories have consisted of the evaporative condenser 20 according to present embodiment with above-mentioned parts.
Here will compare as an example of applicant's two product example, to show the excellent properties according to condenser of the present invention.For example, adopt the appearance and size of the SWL-2245 type condenser of traditional coil heat exchange device to be approximately 5600mm * 3030mm * 4965mm, and the appearance and size that has adopted the SWLG-2200 type condenser of the interlayer heat exchanger plates among the present invention only is that about 3350mm * 2100mm * 4130mm, volume have reduced above 60%.
If need transportation, the standard heat exhaust of traditional SWL-2245 evaporative condenser is 2245KW, the long 5600mm of equipment, wide 3030mm, need a minute up and down two tanks transportation, a long common vehicle of 13.5 meters can't be transported, because this equipment is super wide, can only consider 17.5 meters long vehicle.And the evaporative condenser of the novel SWL-2200 of single flow, its standard heat exhaust is 2200KW, the long 3350mm of equipment, and width 2100mm, two of the equipment of one long 13.5 meters common Che Nengyun same specification, freight can save 40%.
From operation cost, because equipment has been realized miniaturization, so that the power of blower and water pump can reduce greatly.Therefore, the daily operating cost of equipment also just reduces greatly.For example, the standard heat exhaust of traditional SWL-2245 evaporative condenser is 2245KW, needs the blower fan of three 7.5kW and the water pump of a 5.5kW, and general power has reached 28.0kW, and every kilowatt-day power consumption is about 0.3KW/KW day.The standard heat exhaust of SWLG-2200 type condenser is 2200KW, only needs the blower fan of a 7.5kW and the water pump of a 4.0kW, and general power only is 11.5kW, and every kilowatt-day power consumption 0.126KW/KW day, power saving is near 60%.
Airflow state when Fig. 5 has shown evaporative condenser 20 work, wherein, arrow represents the direction of air-flow.
As shown in Figure 5, can clearly be seen that when evaporative condenser 20 work, can form two clearly gas channels:
Article one, from the air port that is positioned at heat exchanger assembly 45 tops, after the passage that forms between the surface of the interlayer heat exchanger plates 10 of process heat exchanger assembly 45, pass again the dehydrater 41 that is positioned at heat exchanger assembly 45 sides, then through the first half in air channel 46, flow out from blower fan 40 at last.The Main Function of this road air-flow is to strengthen heat exchanger assembly 45 lip-deep heat exchanger effectiveness, thereby so that cold-producing medium is finished condensation.
Second through behind the packed tower 42, passes again the dehydrater 41 that is positioned at packed tower 42 sides from the new wind 47 that is positioned at packed tower 42 sides, then pass through whole air channel 46, flows out from blower fan 40 at last.The Main Function of this road air-flow is to realize the secondaries cooling so that flow through the hot water of heat exchanger assembly 45 after spray system 44 ejection at packed tower 42, thereby reduces and the temperature of controlled circulation water.
What pay particular attention to is, experimental results show that, when the equal proper flow of above-mentioned two-way air-flow, be that interlayer heat exchanger plates 10 adopts when being parallel to vertical layout of first via airflow direction, evaporative condenser 20 will be in more excellent duty, exchange capability of heat be about traditional coil condenser hot transducing power 150%.。If because certain reason has affected flowing of first via air-flow, the service behaviour of so whole condenser will reduce greatly.
For example, as shown in Figure 6, when the interlayer heat exchanger plates 10 of heat exchanger assembly 45 adopts lateral arrangement transverse to first via airflow direction, interlayer heat exchanger plates 10 can block article one gas channel substantially, only have a small amount of air-flow can flow through by the outer space of interlayer heat exchanger plates 10 first via gas channel, remaining air-flow can only continue downwards, by flowing out condenser from the second road gas channel after the packed tower 42.The exchange capability of heat of this structure obviously descends, and can only reach 70% of the hot transducing power of traditional coil condenser.
Such mistake is very incidental, because lateral arrangement is the arrangement that adopts in the traditional coiled tube condenser, the technical staff is easy to be subject to the restriction of traditional thought and continues to use transversal arrangement when the new condenser of design.
Contrast experiment's result has also verified above-mentioned conclusion.In the contrast experiment, SWLG-2200 will be as the example (as shown in Figure 5) of the equal proper flow of two-way air-flow, and Comparative Examples will adopt arrangement as shown in Figure 6, and its article one gas channel is roughly blocked by interlayer heat exchanger plates 10.Experimental result is as shown in the table:
Can find out, although only be that interlayer heat exchanger plates 10 arranged direction change, by changing vertical layout into respect to first via airflow direction lateral arrangement, on performance, but bring very large lifting.
Fig. 7 has shown the evaporative condenser 80 according to another preferred embodiment of the present invention.The maximum difference of itself and first embodiment is, what it adopted is that the vertical type gas channel is arranged, does not namely have the air channel 46 that is positioned at heat exchanger assembly 45 and packed tower 42 sides shown in Fig. 4.Correspondingly, in evaporative condenser 80, only comprise from bottom to top a gas channel.
In evaporative condenser 80, blower fan 90 is arranged on the top of whole equipment, and its below is spray system 94, and the heat exchanger assembly that comprises several interlayer heat exchanger plates 10 95 that is positioned at spray system 94 belows.And below heat exchanger assembly 95, be provided with several fresh wind ports that is positioned at the equipment side 97.
When evaporative condenser 80 work, cooling water is from spray system 94 ejections, thereby and heat exchange is realized on the surface of the interlayer heat exchanger plates 10 of the heat exchanger assembly 95 of flowing through and with condensation of refrigerant.Air-flow then flows into from the fresh wind port 97 of below, upwards also finally leave condenser from blower fan 90 by heat exchanger assembly 95, thereby the wet-hot steam that will finish gasification is taken away.
Claims (11)
1. cooling evaporative cooler comprises casing (31) and is arranged in heat exchanger assembly (45), blower fan (40), the spray system (44) of described casing (31), wherein,
Described spray system (44) is positioned at described heat exchanger assembly (45) top, is used for spraying cooling fluid to the outer surface of described heat exchanger assembly (45),
Described blower fan (40) is positioned at the top of described spray system (44), is used for discharging described casing (31) through the cooling fluid steam of described heat exchanger assembly (45),
It is characterized in that, described heat exchanger assembly (45) comprises several interlayer heat exchanger plates (10), described interlayer heat exchanger plates (10) has the inner space, flow therein for cold-producing medium, its periphery seals, and comprises the refrigerant inlet (14) that supplies cold-producing medium to flow into and flow out and export (15) at the periphery of sealing.
2. cooling evaporative cooler as claimed in claim 1 is characterized in that, described interlayer heat exchanger plates (10) is roughly along the direction setting that is parallel to from heat exchanger assembly (45) to described blower fan (40).
3. cooling evaporative cooler as claimed in claim 1 or 2 is characterized in that, described interlayer heat exchanger plates (10) comprises two sheet metals (11), and periphery has welding portion.
4. cooling evaporative cooler as claimed in claim 3 is characterized in that, comprises several binding sites (12) between described two sheet metals (11).
5. cooling evaporative cooler as claimed in claim 4 is characterized in that, described binding site (12) evenly distributes.
6. such as the described cooling evaporative cooler of any one among the claim 1-5, it is characterized in that, described binding site (12) comprises welding portion.
7. cooling evaporative cooler as claimed in claim 6 is characterized in that, the described entrance (14) of cold-producing medium is higher than described outlet (15).
8. cooling evaporative cooler as claimed in claim 6 is characterized in that, the below in heat exchanger assembly (45) is provided with packed tower (42).
9. cooling evaporative cooler as claimed in claim 6 is characterized in that, described cooling fluid comprises water.
10. cooling evaporative cooler as claimed in claim 6 is characterized in that, described cooling evaporative cooler is evaporative condenser.
11. cooling evaporative cooler as claimed in claim 6 is characterized in that, described cooling evaporative cooler is closed cooling tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120461271 CN202660820U (en) | 2011-11-18 | 2011-11-18 | Evaporation type cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120461271 CN202660820U (en) | 2011-11-18 | 2011-11-18 | Evaporation type cooling device |
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| Publication Number | Publication Date |
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| CN202660820U true CN202660820U (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120461271 Expired - Fee Related CN202660820U (en) | 2011-11-18 | 2011-11-18 | Evaporation type cooling device |
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| CN (1) | CN202660820U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123187A (en) * | 2011-11-18 | 2013-05-29 | 浙江万亨机械制造有限公司 | Evaporative cooling device |
-
2011
- 2011-11-18 CN CN 201120461271 patent/CN202660820U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123187A (en) * | 2011-11-18 | 2013-05-29 | 浙江万亨机械制造有限公司 | Evaporative cooling device |
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Owner name: ZHEJIANG WANXIANG TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ZHEJIANG WANHENG MACHINERY MANUFACTURE CO., LTD. |
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Address after: 313100, Zhejiang, Taihu, Changxing County Road, Changxin Road, 799 Zhejiang science and Technology Co., Ltd. million enjoyment Patentee after: Zhejiang Wanxiang Technology Co., Ltd. Address before: 313100, No. three, No. 799, Changxing County Economic Development Zone, Zhejiang Province Patentee before: Zhejiang Wanheng Machinery Manufacture Co., Ltd. |
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Addressee: Peng Peng Document name: Notification of Passing Examination on Formalities |
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Address after: 313000 No. 799 Changxin Avenue, Taihu street, Huzhou, Zhejiang, Changxing County Patentee after: ZHEJIANG WANXIANG TECHNOLOGY CO., LTD. Address before: 313100, Zhejiang, Taihu, Changxing County Road, Changxin Road, 799 Zhejiang science and Technology Co., Ltd. million enjoyment Patentee before: Zhejiang Wanxiang Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20161118 |