CN202928131U - Closed S-shaped heat pipe flat plate collector - Google Patents
Closed S-shaped heat pipe flat plate collector Download PDFInfo
- Publication number
- CN202928131U CN202928131U CN2012205618736U CN201220561873U CN202928131U CN 202928131 U CN202928131 U CN 202928131U CN 2012205618736 U CN2012205618736 U CN 2012205618736U CN 201220561873 U CN201220561873 U CN 201220561873U CN 202928131 U CN202928131 U CN 202928131U
- Authority
- CN
- China
- Prior art keywords
- thermal
- arrest
- heat
- flat plate
- runner
- 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
- 239000005336 safety glass Substances 0.000 claims description 6
- 239000011358 absorbing material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000003466 welding Methods 0.000 abstract description 3
- 239000006096 absorbing agent Substances 0.000 abstract 2
- 239000005341 toughened glass Substances 0.000 abstract 2
- 230000007547 defect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000010521 absorption reaction Methods 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
- 230000009172 bursting Effects 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a closed S-shaped heat pipe flat plate collector which comprises an outer frame. Toughened glass with high transparency is inlaid on the outer frame, and an absorber plate core is arranged on the lower side of the toughened glass. The absorber plate core comprises a heat exchange pipe, heat exchange elbows and heat collecting pipes, wherein each heat collecting pipe comprises heat collecting flow channels and heat collecting fins, and the heat collecting fins are arranged on two sides of the heat collecting flow channels in an integrally-molded mode. The heat exchange elbows penetrate through the heat exchange pipe so that a plurality of heat collecting flow channels are communicated from the head to tail, a sealed space is formed by the heat exchange pipe, the heat exchange elbows and the heat collecting flow channels, and heat pipe media are filled in the sealed space. The closed S-shaped heat pipe flat plate collector has the advantages that the heat collecting pipes are molded in one time in a squeezing mode so that the problems of fastness and thermal resistance caused by laser welding or ultrasonic wave welding are avoided; the defects of frost crack of the collector in winter and scaling of pipelines of the flat plate collector are overcome; and the heat transfer effect is effectively improved due to the fact that sliding ways can be arranged in the heat collecting flow channels.
Description
Technical field
The utility model relates to a kind of solar thermal collector, specifically a kind of flat plate collector.
Background technology
The flat type solar heat collector that generally utilizes in the market comprises the copper runner and with the heat-absorbing plate core of heat absorbing coating.Upper thermal-arrest runner, next part hot flow path and middle thermal-arrest arm form " H " type copper runner, with the aluminium sheet of heat absorbing coating or copper coin by ultrasonic wave or laser weld on the thermal-arrest arm.Storage is water in the copper runner, and when the sheet material of solar radiation with heat absorbing coating is heated, the water that the thermal-arrest arm adds hot leg pipe inside passed to heat again by sheet material.Hot water will be stored in heat in water tank by circulation, form domestic solar water heater system commonly used.Its shortcoming is: upper thermal-arrest runner, and next part hot flow path and middle thermal-arrest arm inner filling water are at the easy bursting by freezing heat collector of cold weather pipeline; Water is the easy incrustation scale that produces of heating in the thermal-arrest runner for a long time, affects the heat collector heat exchange efficiency; Thermal-arrest sheet material and thermal-arrest runner easily come off, and thermal resistance are larger by welding; Due to the runner that adopts copper material, expensive.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of antifreeze, snakelike heat pipe flat plate collector of enclosed that can not come off between scaling, parts.
the utility model solves the problems of the technologies described above by the following technical solutions: the snakelike heat pipe flat plate collector of a kind of enclosed comprises housing, the safety glass of high printing opacity is embedded in above housing, install heat-absorbing plate core below safety glass, described heat-absorbing plate core comprises heat exchanger tube, heat exchange elbow and thermal-collecting tube, the thermal-arrest fin that described thermal-collecting tube comprises the thermal-arrest runner and is shaped in thermal-arrest runner both sides, the heat exchange elbow passes from heat exchanger tube, and with several thermal-arrest runners head and the tail UNICOM, heat exchanger tube, heat exchange elbow and thermal-arrest runner form confined space, heat-pipe medium is filled in this confined space.
Optimize, heat-pipe medium accounts for 35%～50% of heat exchanger tube, heat exchange elbow and thermal-arrest runner institute confined space.
The utility model can further be optimized for, the thermal-arrest fin of Neighbor Set heat pipe be separated by a bit of distance or mutual overlap joint.
The utility model can further be optimized for, and the thermal-arrest runner of described thermal-collecting tube is the structure of cylindrical, hollow, and the inwall of thermal-arrest runner is level and smooth, and the thermal-arrest fin of described thermal-arrest runner both sides at grade.
Perhaps, the thermal-arrest runner of described thermal-collecting tube is the structure of cylindrical, hollow, and the inwall ring central shaft of described thermal-arrest runner is evenly equipped with the strip conduit.
Perhaps, described thermal-collecting tube comprises that cross section becomes the thermal-arrest runner of flat, and the thermal-arrest fin that is positioned at thermal-arrest runner two short brinks, offers a plurality of along long side direction longitudinal hole side by side in described thermal-arrest runner.
Circular or the square or triangle of the cross section of described longitudinal hole.
Perhaps, the mid portion in the hole of offering in described thermal-arrest runner is that a plurality of equilateral triangles hole and del hole are staggered along long side direction, cross section one side camber one side that is positioned at outermost two holes is oblique line, the arc of the thermal-arrest runner both sides of described arc and flat is consistent, and described oblique line is parallel with the tri-angle-holed side that it closes on.
The utility model can also further be optimized for, and the plane that described thermal-arrest fin forms is passed the central shaft of thermal-arrest runner or departed from the central shaft of thermal-arrest runner.
The utility model can also further be optimized for, and the surface of described thermal-arrest runner and thermal-arrest fin is coated with selective absorbing material.
The utility model has the advantage of: the utility model adopts thermal-collecting tube by the disposable extrusion modling of aluminium alloy, avoid because of laser weld or ultrasonic bonding firmly and the thermal resistance problem; Heat-pipe medium due in the space that is sealed in the certain vacuum degree, solves the disadvantage of heat collector bursting by freezing in winter and flat plate collector pipeline scale simultaneously, guarantees that effectively heat collector in the use of cold and low temp area, improves the reliability that product uses; Heat pipe adopts the snakelike heat pipe of enclosed, easy realization simple in structure, and the heat with heat pipe is directly passed to water simultaneously, and heat transfer temperature difference is large, and heat transfer effect is obvious; Can there be conduit thermal-arrest runner inside, and this structure provides the capillary force of interior media, makes interior media flatten at pipe, effectively improves heat-transfer effect.
Description of drawings
Fig. 1 is the axle geodesic structure figure of the snakelike heat pipe flat plate collector of the utility model enclosed.
Fig. 2 is the front view of Fig. 1.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is that the master of the snakelike heat pipe flat plate collector of the utility model enclosed looks sectional structure chart.
Fig. 5 is a kind of location diagram of adjacent thermal-arrest fin.
Fig. 6 to Figure 13 is 8 kinds of structure charts of thermal-collecting tube.
Figure 14 is the figuratum structural representation of fin compacting.
The specific embodiment
the snakelike heat pipe flat plate collector of the utility model enclosed comprises housing, the safety glass of high printing opacity is embedded in above housing, install heat-absorbing plate core below safety glass, please consult simultaneously Fig. 1 to shown in Figure 4, described heat-absorbing plate core comprises heat exchanger tube 1, heat exchange elbow 2 and thermal- collecting tube 3, 34 of the thermal-arrest wings that described thermal-collecting tube 3 comprises thermal-arrest runner 32 and is shaped in thermal-arrest runner both sides, heat exchange elbow 2 passes from heat exchanger tube 1, and with several thermal-arrest runners 32 head and the tail UNICOMs, heat exchanger tube 1, heat exchange elbow 2 and thermal-arrest runner 32 form confined space, heat-pipe medium 4 is filled in this confined space.
The charging amount of heat-pipe medium 4 accounts for heat exchanger tube 1, heat exchange elbow 2 and thermal-arrest runner 32 and forms 5%～50% of confined space, and is preferred, and charging amount accounts for heat exchanger tube 1, heat exchange elbow 2 and thermal-arrest runner 32 and forms 35%～50% of confined space.
Described thermal-collecting tube 3 is an extrusion molding, is also the structure that thermal-arrest runner 32 and thermal-arrest fin 34 are one of the forming, and is concrete, can adopt extrusion modling thermal-collecting tube 3 of aluminium alloy, uses copper material to reduce production cost.
The thermal-arrest fin 34 of the Neighbor Set heat pipe 3 a bit of distance of can being separated by as shown in Fig. 1,2,4, also can overlap, as shown in Figure 5 mutually.
And the structure of thermal-collecting tube 3 can have a variety of, as shown in Fig. 6 to 13.
The thermal-arrest runner 32 of thermal-collecting tube 3 shown in Figure 6 is the structure of cylindrical, hollow, and the inwall of thermal-arrest runner 32 is level and smooth, the thermal-arrest fin 34 of described thermal-arrest runner 32 both sides at grade, the central shaft of thermal-arrest runner 32 is passed on the plane that thermal-arrest fin 34 forms, also namely along the radially setting of thermal-arrest runner 32.
Thermal-collecting tube 3 shown in Figure 7 is with difference shown in Figure 6, the thermal-arrest fin 34 of described thermal-arrest runner 32 both sides at grade, and the central shaft of thermal-arrest runner 32 is departed from the plane that thermal-arrest fin 34 forms, this structure makes the thermal-collecting tube overall appearance more beautiful, and can avoid affecting coating quality because of electrostatic screen.
Thermal-collecting tube 3 shown in Figure 8 is with difference shown in Figure 6, the inwall ring central shaft of described thermal-arrest runner 32 is evenly equipped with strip conduit 322, this strip conduit 322 can provide the capillary force of interior media, makes interior media flatten at pipe, effectively improves heat-transfer effect.
Thermal-collecting tube 3 shown in Figure 9 is with difference shown in Figure 8, the thermal-arrest fin 34 of described thermal-arrest runner 32 both sides at grade, and the central shaft of thermal-arrest runner 32 is departed from the plane that thermal-arrest fin 34 forms, this structure makes the thermal-collecting tube overall appearance more beautiful, and can avoid affecting coating quality because of electrostatic screen.
Thermal-collecting tube shown in Figure 10 comprises that cross section becomes the thermal-arrest runner 32 of flat, and is positioned at 32 liang of short brink thermal-arrest fins 34 of thermal-arrest runner.Offer a plurality ofly along long side direction longitudinal hole 324 side by side in described thermal-arrest runner 32, adopt loose structure, can complete simultaneously heat absorption and conduct heat, greatly improve the utilization ratio of heat.In this embodiment, the cross section of described longitudinal hole 324 is circular.
Thermal-collecting tube shown in Figure 11 and the difference of Figure 10 be, in this embodiment, and the cross section squarely of described longitudinal hole 324.
Thermal-collecting tube shown in Figure 12 and the difference of Figure 10 be, in this embodiment, and the cross section triangularity of described longitudinal hole 324.
Thermal-collecting tube shown in Figure 13 and the difference of Figure 10 are, in this embodiment, to be a plurality of equilateral triangles hole 326 be staggered along long side direction with del hole 328 mid portion in the hole of offering in described thermal-arrest runner 32, cross section one side camber one side that is positioned at outermost two holes 329 is oblique line, the arc of thermal-arrest runner 32 both sides of the arc in hole 329 and flat is consistent, and the oblique line in hole 329 is parallel with the tri-angle-holed side that it closes on.The sectional area summation in the hole of offering in this structure assurance thermal-arrest runner 32 is maximum, can farthest improve the utilization rate of heat.
Figure 10 is to each embodiment shown in Figure 13, the thermal-arrest fin 34 of described thermal-arrest runner 32 both sides at grade, the plane that thermal-arrest fin 34 forms is passed the central shaft of thermal-arrest runner 32 or is departed from the central shaft of thermal-arrest runner 32, the structure that departs from the central shaft of thermal-arrest runner 32 makes the thermal-collecting tube overall appearance more beautiful, and can avoid affecting coating quality because of electrostatic screen.
Figure 10 is to each embodiment shown in Figure 13, the inwall in the hole of offering in described thermal-arrest runner 32 can also encircle central shaft and be evenly equipped with the strip conduit, this strip conduit can provide the capillary force of interior media, makes interior media flatten at pipe, effectively improves heat-transfer effect.
Fig. 6 is to embodiment shown in Figure 13, and the surface of described thermal-arrest runner 32 and thermal-arrest fin 34 can also be coated with selective absorbing material, by absorbing sunshine, transfers heat to thermal-arrest fin 34 and thermal-arrest runner 32, realizes heat absorption and heat transmission function.
In the various embodiments described above, the overall structure of this thermal-collecting tube is to push by aluminum and its alloy the aluminium section bar that forms.
As shown in figure 14, in the various embodiments described above, for attractive in appearance and increase endotherm area, can also suppress various patterns 342 on described thermal-arrest fin 34.
The operation principle of the snakelike heat pipe flat plate collector of the utility model enclosed is as described below: heat transferring medium is equipped with in heat exchanger tube 1 inside, solar radiation scribbles on the thermal-collecting tube 3 of selective heat absorbing coating, thermal-collecting tube 3 transfers heat to inner heat-pipe medium 4, heat-pipe medium 4 carburation by evaporation that is heated rises, enter heat exchange elbow 2 and transfer heat to the interior heat transferring medium of heat exchanger tube 1, be cooled into simultaneously liquid, be subjected to gravity and capillary force to be back to thermal-arrest runner 32 through condensed heat-pipe medium 4, complete the once circulation of heat absorption and release.
The utility model adopts thermal-collecting tube 3 by the disposable extrusion modling of aluminium alloy, avoid because of laser weld or ultrasonic bonding firmly and the thermal resistance problem; Heat-pipe medium 4 due in the space that is sealed in the certain vacuum degree, solves the disadvantage of heat collector bursting by freezing in winter and flat plate collector pipeline scale simultaneously, guarantees that effectively heat collector in the use of cold and low temp area, improves the reliability that product uses.
The preferred embodiment that the above is only created for the utility model; do not create in order to limit the utility model; all any modifications of doing within spirit that the utility model is created and principle, be equal to and replace and improvement etc., within all should being included in the protection domain that the utility model creates.
Claims (10)
1. snakelike heat pipe flat plate collector of enclosed, comprise housing, the safety glass of high printing opacity is embedded in above housing, install heat-absorbing plate core below safety glass, it is characterized in that: described heat-absorbing plate core comprises heat exchanger tube, heat exchange elbow and thermal-collecting tube, the thermal-arrest fin that described thermal-collecting tube comprises the thermal-arrest runner and is shaped in thermal-arrest runner both sides, the heat exchange elbow passes from heat exchanger tube, and with several thermal-arrest runners head and the tail UNICOM, heat exchanger tube, heat exchange elbow and thermal-arrest runner form confined space, and heat-pipe medium is filled in this confined space.
2. the snakelike heat pipe flat plate collector of enclosed as claimed in claim 1 is characterized in that: heat-pipe medium accounts for 35%～50% of heat exchanger tube, heat exchange elbow and thermal-arrest runner institute confined space.
3. the snakelike heat pipe flat plate collector of enclosed as claimed in claim 1 or 2 is characterized in that: the thermal-arrest fin of Neighbor Set heat pipe be separated by a bit of distance or overlap joint mutually.
4. the snakelike heat pipe flat plate collector of enclosed as claimed in claim 1, it is characterized in that: the thermal-arrest runner of described thermal-collecting tube is the structure of cylindrical, hollow, and the inwall of thermal-arrest runner is level and smooth, the thermal-arrest fin of described thermal-arrest runner both sides is at grade.
5. the snakelike heat pipe flat plate collector of enclosed as claimed in claim 1, it is characterized in that: the thermal-arrest runner of described thermal-collecting tube is the structure of cylindrical, hollow, the inwall ring central shaft of described thermal-arrest runner is evenly equipped with the strip conduit.
6. the snakelike heat pipe flat plate collector of enclosed as claimed in claim 1, it is characterized in that: described thermal-collecting tube comprises that cross section becomes the thermal-arrest runner of flat, and the thermal-arrest fin that is positioned at thermal-arrest runner two short brinks, offer a plurality of along long side direction longitudinal hole side by side in described thermal-arrest runner.
7. the snakelike heat pipe flat plate collector of enclosed as claimed in claim 6 is characterized in that: circular or the square or triangle of the cross section of described longitudinal hole.
8. the snakelike heat pipe flat plate collector of enclosed as claimed in claim 6, it is characterized in that: the mid portion in the hole of offering in described thermal-arrest runner is that a plurality of equilateral triangles hole and del hole are staggered along long side direction, cross section one side camber one side that is positioned at outermost two holes is oblique line, the arc of the thermal-arrest runner both sides of described arc and flat is consistent, and described oblique line is parallel with the tri-angle-holed side that it closes on.
9. the snakelike heat pipe flat plate collector of enclosed as described in claim 4 to 8 any one is characterized in that: the plane that described thermal-arrest fin forms is passed the central shaft of thermal-arrest runner or is departed from the central shaft of thermal-arrest runner.
10. the snakelike heat pipe flat plate collector of enclosed as claimed in claim 1, it is characterized in that: the surface of described thermal-arrest runner and thermal-arrest fin is coated with selective absorbing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205618736U CN202928131U (en) | 2012-10-29 | 2012-10-29 | Closed S-shaped heat pipe flat plate collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205618736U CN202928131U (en) | 2012-10-29 | 2012-10-29 | Closed S-shaped heat pipe flat plate collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202928131U true CN202928131U (en) | 2013-05-08 |
Family
ID=48218084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205618736U Expired - Fee Related CN202928131U (en) | 2012-10-29 | 2012-10-29 | Closed S-shaped heat pipe flat plate collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202928131U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878696A (en) * | 2012-10-29 | 2013-01-16 | 安徽海太科新能源科技有限公司 | Flat plate collector with closed snakelike heat pipe |
| CN113432313A (en) * | 2021-07-20 | 2021-09-24 | 山东阳光博士太阳能工程有限公司 | Solar superconducting heat pipe |
-
2012
- 2012-10-29 CN CN2012205618736U patent/CN202928131U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878696A (en) * | 2012-10-29 | 2013-01-16 | 安徽海太科新能源科技有限公司 | Flat plate collector with closed snakelike heat pipe |
| CN113432313A (en) * | 2021-07-20 | 2021-09-24 | 山东阳光博士太阳能工程有限公司 | Solar superconducting heat pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WANG CHAOSHENG Free format text: FORMER OWNER: ANHUI HAITAIKE NEW ENERGY TECHNOLOGY CO., LTD. Effective date: 20130819 Owner name: RUAN GUOCHENG Effective date: 20130819 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 245200 HUANGSHAN, ANHUI PROVINCE TO: 245000 HUANGSHAN, ANHUI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130819 Address after: 245000 No. 5 Xing Xing Road, Xin'An River Avenue, Shexian Economic Development Zone, Anhui, Huangshan City Patentee after: Wang Chaosheng Patentee after: Ruan Guocheng Address before: 245200 Shexian Economic Development Zone, Anhui, Huangshan City Patentee before: Anhui Haitaike New Energy Technology Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: ANHUI HAITAIKE NEW ENERGY TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: WANG CHAOSHENG Effective date: 20140523 Free format text: FORMER OWNER: RUAN GUOCHENG Effective date: 20140523 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140523 Address after: 245000 No. 5 Xing Xing Road, Xin'An River Avenue, Shexian Economic Development Zone, Anhui, Huangshan City Patentee after: Anhui Haitaike New Energy Technology Co., Ltd. Address before: 245000 No. 5 Xing Xing Road, Xin'An River Avenue, Shexian Economic Development Zone, Anhui, Huangshan City Patentee before: Wang Chaosheng Patentee before: Ruan Guocheng |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20151029 |
|
| EXPY | Termination of patent right or utility model |