CN203443450U - Tube bundle of flat tubes with inner fins and outer fins - Google Patents
Tube bundle of flat tubes with inner fins and outer fins Download PDFInfo
- Publication number
- CN203443450U CN203443450U CN201320408171.9U CN201320408171U CN203443450U CN 203443450 U CN203443450 U CN 203443450U CN 201320408171 U CN201320408171 U CN 201320408171U CN 203443450 U CN203443450 U CN 203443450U
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- tube box
- perforated plate
- tube
- flat pipe
- outside fin
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Abstract
The utility model relates to a tube bundle of flat tubes with inner fins and outer fins. The tube bundle comprises an upper tube plate, a lower tube plate, an upper tube box, a lower tube body and the plurality of flat tubes with the inner fins and the outer fins. Each flat tube with the inner fins and the outer fins is a flat radiating tube with the two ends open, the inner fins which divide the inner diameter of the corresponding flat tube into a plurality of passageways are arranged on the corresponding flat tube with the inner fins and the outer fins in the diameter direction, and a plurality of radiating fins are arranged on each flat tube with the inner fins and the outer fins in the diameter direction. A plurality of fin-tube connecting holes which correspond to each other in position are formed in the upper tube plate and the lower tube plate. Each flat tube with the inner fins and the outer fins is arranged between the corresponding fin-tube connecting hole of the upper tube plate and the corresponding fin-tube connecting hole, corresponding to the fin-tube connecting hole in position, of the lower tube plate. The tube bundle has the advantages that the flat tubes with the inner fins and the outer fins are used as heat exchanging elements, the flat tubes with the fins are larger in effective heat transfer area and smaller in heat transfer dead corner compared with ordinary tubes with fins, and by means of the flat tubes, the wall thickness can be lowered, the thermal resistance is smaller, and the heat transferring coefficient is higher.
Description
Technical field
The utility model belongs to heat exchange element, relates in particular to the flat pipe tube bank of a kind of inside and outside fin.
Background technology
Finned tube tube bank, always as a kind of heat exchange element indispensable in air cooler, is also widely applied in other heat exchange products simultaneously, high and enjoy favor with heat exchange efficiency.But existing finned tube has only considered that the design of the outer fin of pipe is with the heat transfer of strengthening gas side, and while undergoing phase transition in the mobility of tube fluid is particularly managed, heat conduction reinforced after phase transformation considered, owing to being subject to the restriction of the factors such as geometry of tube passage, after phase transformation, condensate liquid is difficult to be uniformly distributed in pipe, causes the decline of such air cooler cooling capacity.Interior without Phase cooling occasion for pipe, in pipe, without augmentation of heat transfer measure, overall heat transfer effect is poorer.Traditional finned tube adopts the structure of interspersed fin bundle, easily produces gap between fin bundle and heat exchanger tube, form thermal contact resistance, thereby heat exchange efficiency is lower.Because several heat exchanger tubes are sleeved on a fin, cause the compactness of equipment poor, floor space is larger.
Summary of the invention
The purpose of this utility model is the technical scheme that proposes the flat pipe tube bank of a kind of inside and outside fin for air cooler; Strengthen heat-transfer effect, fin and heat exchanger tube are connected firmly, compact equipment.
To achieve these goals, the technical solution of the utility model is: the flat pipe tube bank of a kind of inside and outside fin, comprises upper perforated plate, lower perforated plate, upper tube box, lower tube box, end plate and the flat pipe of Duo Gen inside and outside fin; The flat pipe of described inside and outside fin is the platypelloid type radiating tube of both ends open, and the internal diameter of the flat pipe of inside and outside fin is provided with the inner fin that internal diameter is separated into a plurality of paths, and the external diameter of the flat pipe of inside and outside fin is provided with many radiating fins; Described upper perforated plate and lower perforated plate are provided with finned tube connecting hole corresponding to a plurality of positions; Described upper tube box is the housing of lower ending opening, and the lower end of described upper tube box and described upper perforated plate are connected to form the casing of sealing; Described lower tube box is the housing of upper end open, and the upper end of lower tube box and described lower perforated plate are connected to form the casing of sealing; A flat pipe of described inside and outside fin is installed between the finned tube connecting hole of upper perforated plate corresponding to each position and the finned tube connecting hole of lower perforated plate; Between upper perforated plate and the two ends of lower perforated plate, be respectively provided with a described end plate; On upper tube box or lower tube box, be provided with at least one with the entrance of adpting flange, on upper tube box or lower tube box, be provided with at least one with the outlet of adpting flange, the inner chamber of the inner chamber by upper tube box between outlet and entrance, many flat pipes of inside and outside fin, lower tube box forms gas channel.
Further, entrance and exit can be separately positioned on to upper tube box and lower tube box, in one end of described upper tube box, be provided with one with the entrance of adpting flange, at the other end of described lower tube box, be provided with one with the outlet of adpting flange.
Further, entrance and exit all can be arranged on to upper tube box; In one end of described upper tube box, be provided with one with the entrance of adpting flange, at the other end of described upper tube box, be provided with one with the outlet of adpting flange; In described upper tube box, be provided with the pass partition of one or more separation inner chambers and described fin connecting hole, when the pass partition of described upper tube box is more than one, in lower tube box, be also provided with the pass partition of separating inner chamber and described fin connecting hole, the quantity of the pass partition in described lower tube box is that the quantity of the pass partition in described upper tube box subtracts one, and the position of the pass partition in lower tube box and the position of the pass partition in upper tube box are interspersed.
Further, in like manner entrance and exit all can be arranged on to lower tube box.
Further, described upper tube box is semicircle tubulose housing, and the semicircle openend of upper tube box lower end and described upper perforated plate are connected to form the casing of sealing; Described lower tube box is semicircle tubulose housing, and the semicircle openend of lower tube box upper end and described lower perforated plate are connected to form the casing of sealing;
Further, the width of the flat pipe of described inside and outside fin is 50mm～500mm, and the length of the flat pipe of inside and outside fin is 3m～15m.
Further, described upper perforated plate and lower perforated plate and the flat pipe of described inside and outside fin adopt material welding of the same race at connecting portion; Upper perforated plate and lower perforated plate and described upper tube box and lower tube box adopt material welding of the same race at connecting portion.
Further, the material of described upper perforated plate and lower perforated plate is aluminium alloy plate, and the flat pipe of described inside and outside fin adopts aluminum alloy material, and the material of described upper tube box and lower tube box is aluminium alloy.
Further, described upper perforated plate and lower perforated plate adopt the composite plate of steel, aluminium composite material Shaping by blast, and the flat pipe of described inside and outside fin adopts aluminum alloy material, the flat pipe welding of the aluminium face of described upper perforated plate and lower perforated plate and inside and outside fin; Described upper tube box and lower tube box adopt steel, and the steel face of described upper perforated plate and lower perforated plate welds with upper tube box and lower tube box respectively.
The beneficial effects of the utility model are: adopt the flat pipe of novel inside and outside fin as heat exchange element, it is larger that fin flat tube and common finned tube are compared effective heat transfer area, and heat transfer dead angle is less; Adopt the flat tube can attenuate wall thickness, thermal resistance be less, and heat transfer coefficient is higher.
The width dimensions of flat tube is larger, single fin flat tube can replace the heat transfer effect of many row's fin pipes, so fin flat tube adopts single row configuration more, the disorderly caused pipe bursting by freezing of thermal balance and corrosion between the dust stratification problem that the finned tubes of row more than can effectively avoiding bring and inner and outer pipes.
Between bobbin carriage and tube sheet, between tube sheet and flat base tube, adopt respectively same material welding, welding effect is good.
Below in conjunction with drawings and Examples, the utility model is described in detail.
Accompanying drawing explanation
Fig. 1 is the utility model structure chart;
Fig. 2 is the utility model upper tube box and lower tube box sectional structure chart;
Fig. 3 is the sectional structure chart that the utility model gateway is all arranged on upper tube box;
Fig. 4 is the sectional structure chart that the utlity model has a plurality of gateways.
The specific embodiment
As shown in Figure 1, Figure 2, the flat pipe tube bank of a kind of inside and outside fin, comprises upper perforated plate 10, lower perforated plate 20, the flat pipe 60 of upper tube box 30, lower tube box 40, end plate 50 and Duo Gen inside and outside fin; The flat pipe of described inside and outside fin is the platypelloid type radiating tube of both ends open, and the internal diameter of the flat pipe of inside and outside fin is provided with the inner fin 61 that internal diameter is separated into a plurality of paths, and the external diameter of the flat pipe of inside and outside fin is provided with many radiating fins 62; Described upper perforated plate and lower perforated plate are provided with finned tube connecting hole corresponding to a plurality of positions; Described upper tube box is the housing of lower ending opening, and the lower end of described upper tube box and described upper perforated plate are connected to form the casing of sealing; Described lower tube box is the housing of upper end open, and the upper end of lower tube box and described lower perforated plate are connected to form the casing of sealing; A flat pipe of described inside and outside fin is installed between the finned tube connecting hole of upper perforated plate corresponding to each position and the finned tube connecting hole of lower perforated plate; Between upper perforated plate and the two ends of lower perforated plate, be respectively provided with a described end plate; On upper tube box or lower tube box, be provided with at least one with the entrance 70 of adpting flange, on upper tube box or lower tube box, be provided with at least one with the outlet 80 of adpting flange, the inner chamber of the inner chamber by upper tube box between outlet and entrance, many flat pipes of inside and outside fin, lower tube box forms gas channel.
The width of the flat pipe of described inside and outside fin is 50mm～500mm, and the length of the flat pipe of inside and outside fin is 3m～15m.
Described upper perforated plate and lower perforated plate and the flat pipe of described inside and outside fin adopt material welding of the same race at connecting portion; Upper perforated plate and lower perforated plate and described upper tube box and lower tube box adopt material welding of the same race at connecting portion.
Entrance and exit can be separately positioned on to upper tube box and lower tube box, in one end of described upper tube box, be provided with one with the entrance of adpting flange, at the other end of described lower tube box, be provided with one with the outlet of adpting flange.
Also so that entrance and exit is all arranged on to upper tube box; In one end of described upper tube box, be provided with one with the entrance of adpting flange, at the other end of described upper tube box, be provided with one with the outlet of adpting flange; In described upper tube box, be provided with the pass partition of one or more separation inner chambers and described fin connecting hole, when the pass partition of described upper tube box is more than one, in lower tube box, be also provided with the pass partition of separating inner chamber and described fin connecting hole, the quantity of the pass partition in described lower tube box is that the quantity of the pass partition in described upper tube box subtracts one, and the position of the pass partition in lower tube box and the position of the pass partition in upper tube box are interspersed.
In like manner also entrance and exit all can be arranged on to lower tube box.
Embodiment mono-,
As shown in Figure 1, Figure 2, the flat pipe tube bank of a kind of inside and outside fin, comprises upper perforated plate 10, lower perforated plate 20, upper tube box 30, lower tube box 40, end plate 50 and ten flat pipes 60 of inside and outside fin; The flat pipe of described inside and outside fin is the platypelloid type radiating tube of both ends open, and the internal diameter of the flat pipe of inside and outside fin is provided with the inner fin 61 that internal diameter is separated into a plurality of paths, and the external diameter of the flat pipe of inside and outside fin is provided with many radiating fins 62; On described upper perforated plate and lower perforated plate, be respectively provided with ten finned tube connecting holes that position is corresponding; A flat pipe of described inside and outside fin is installed between the finned tube connecting hole of upper perforated plate corresponding to each position and the finned tube connecting hole of lower perforated plate; Between upper perforated plate and the two ends of lower perforated plate, be respectively provided with a described end plate;
Described upper tube box is semicircle tubulose housing, and the semicircle openend of upper tube box lower end and described upper perforated plate are connected to form the casing of sealing; Described lower tube box is semicircle tubulose housing, and the semicircle openend of lower tube box upper end and described lower perforated plate are connected to form the casing of sealing;
In one end of described upper tube box, be provided with one with the entrance 70 of adpting flange, at the other end of described lower tube box, be provided with one with the outlet 80 of adpting flange.The inner chamber of the inner chamber by upper tube box between outlet and entrance, many flat pipes of inside and outside fin, lower tube box forms gas channel.
The width of the flat pipe of described inside and outside fin is 280mm, and the length of the flat pipe of inside and outside fin is 8m.
The material of described upper perforated plate and lower perforated plate is aluminium alloy plate, the flat pipe of described inside and outside fin adopts aluminum alloy material, the flat pipe of upper perforated plate and lower perforated plate and inside and outside fin welds at connecting portion, the material of described upper tube box and lower tube box is aluminium alloy, and upper perforated plate and lower perforated plate weld at connecting portion with upper tube box and lower tube box respectively.
Embodiment bis-,
As Fig. 3, the flat pipe tube bank of a kind of inside and outside fin, comprises upper perforated plate 10, lower perforated plate 20, upper tube box 30, lower tube box 40, end plate 50 and ten flat pipes 60 of inside and outside fin; The flat pipe of described inside and outside fin is the platypelloid type radiating tube of both ends open, and the internal diameter of the flat pipe of inside and outside fin is provided with the inner fin 61 that internal diameter is separated into a plurality of paths, and the external diameter of the flat pipe of inside and outside fin is provided with many radiating fins 62; On described upper perforated plate and lower perforated plate, be respectively provided with ten finned tube connecting holes that position is corresponding; A flat pipe of described inside and outside fin is installed between the finned tube connecting hole of upper perforated plate corresponding to each position and the finned tube connecting hole of lower perforated plate; Between upper perforated plate and the two ends of lower perforated plate, be respectively provided with a described end plate;
Described upper tube box is semicircle tubulose housing, and the semicircle openend of upper tube box lower end and described upper perforated plate are connected to form the casing of sealing; Described lower tube box is semicircle tubulose housing, and the semicircle openend of lower tube box upper end and described lower perforated plate are connected to form the casing of sealing;
In described upper tube box, be provided with two pass partitions 32 of separating inner chamber and described fin connecting hole, upper tube box be divided into the cavity of three isolation, the cavity at two ends respectively connects three flat pipes of inside and outside fin, and middle cavity connects four flat pipes of inside and outside fin;
In lower tube box, be also provided with a pass partition 41 of separating inner chamber and described fin connecting hole, upper tube box be divided into the cavity of two isolation, each cavity respectively connects five flat pipes of inside and outside fin;
Cavity and internal and external finned tubes that upper tube box and lower tube box are separated form the passage of media flow between the flange at upper tube box two ends; Medium enters from the flange port of upper tube box one end the cavity being connected with described flange, by internal and external finned tubes, flow downward and enter the cavity of lower tube box homonymy, by internal and external finned tubes, upwards flow into middle cavity again, by internal and external finned tubes, flow downward and enter the cavity of the lower tube box other end again, by internal and external finned tubes, upwards flow into the cavity of the upper tube box other end, then the flange port by the other end flows out again.
The width of the flat pipe of described inside and outside fin is 400mm, and the length of the flat pipe of inside and outside fin is 10m.
Described upper perforated plate and lower perforated plate adopt the composite plate of steel, aluminium composite material Shaping by blast, and the flat pipe of described inside and outside fin adopts aluminum alloy material, the flat pipe welding of the aluminium face of described upper perforated plate and lower perforated plate and inside and outside fin; Described upper tube box and lower tube box adopt steel, and the steel face of described upper perforated plate and lower perforated plate welds with upper tube box and lower tube box respectively.
In the present embodiment, upper tube box and lower tube box adopt steel, and upper perforated plate and lower perforated plate adopt the composite plate of steel, aluminium composite material Shaping by blast, can strengthen the whole intensity of tube bank, are applicable to the tube bundle that manufacturing structure size is larger.
Embodiment tri-,
As Fig. 4, the flat pipe tube bank of a kind of inside and outside fin, comprises upper perforated plate 10, lower perforated plate 20, upper tube box 30, lower tube box 40, end plate 50 and ten flat pipes 60 of inside and outside fin; The flat pipe of described inside and outside fin is the platypelloid type radiating tube of both ends open, and the internal diameter of the flat pipe of inside and outside fin is provided with the inner fin 61 that internal diameter is separated into a plurality of paths, and the external diameter of the flat pipe of inside and outside fin is provided with many radiating fins 62; On described upper perforated plate and lower perforated plate, be respectively provided with ten finned tube connecting holes that position is corresponding; A flat pipe of described inside and outside fin is installed between the finned tube connecting hole of upper perforated plate corresponding to each position and the finned tube connecting hole of lower perforated plate; Between upper perforated plate and the two ends of lower perforated plate, be respectively provided with a described end plate;
Described upper tube box is semicircle tubulose housing, and the semicircle openend of upper tube box lower end and described upper perforated plate are connected to form the casing of sealing; Described lower tube box is semicircle tubulose housing, and the semicircle openend of lower tube box upper end and described lower perforated plate are connected to form the casing of sealing; In the upper end of upper tube box, be provided with two with the entrance 70 of adpting flange, in the lower end of described lower tube box, be provided with two with the outlet 80 of adpting flange.The inner chamber of the inner chamber by upper tube box between outlet and entrance, many flat pipes of inside and outside fin, lower tube box forms gas channel.
The width of the flat pipe of described inside and outside fin is 300mm, and the length of the flat pipe of inside and outside fin is 12m.
The material of described upper perforated plate and lower perforated plate is aluminium alloy plate, the flat pipe of described inside and outside fin adopts aluminum alloy material, the flat pipe of upper perforated plate and lower perforated plate and inside and outside fin welds at connecting portion, the material of described upper tube box and lower tube box is aluminium alloy, and upper perforated plate and lower perforated plate weld at connecting portion with upper tube box and lower tube box respectively.
In above embodiment, the utility model adopts the flat pipe of novel inside and outside fin as heat exchange element, and it is larger that fin flat tube and common finned tube are compared effective heat transfer area, and heat transfer dead angle is less.Adopt the flat tube can attenuate wall thickness, thermal resistance be less, and heat transfer coefficient is higher.
The width dimensions of the flat pipe of inside and outside fin is larger, single fin flat tube can replace the heat transfer effect of many row's fin pipes, so fin flat tube adopts single row configuration more, the disorderly caused pipe bursting by freezing of thermal balance and corrosion between the dust stratification problem that the finned tubes of row more than can effectively avoiding bring and inner and outer pipes.The little power of fan of selecting of single row configuration air side resistance is little.
The flat pipe of inside and outside fin adopts inside and outside fin structure, inner fin can play drainage, and to be thermal medium more even at the inner flow velocity of flat tube, and inner fin can improve flat tube in addition rigidity and intensity avoid pipe due to the unstable phenomenon of rigidity deficiency under external and internal pressure effect.The increase of inner fin can reduce the wall thickness of flat tube in addition, and thermal resistance reduces and effectively improves heat transfer coefficient, saves material and cost.
Between upper lower tube box and upper lower perforated plate, between upper lower perforated plate and the flat pipe of inside and outside fin, adopt respectively same material welding, welding effect is good.
Claims (8)
1. the flat pipe tube bank of inside and outside fin, comprises upper perforated plate, lower perforated plate, upper tube box, lower tube box, end plate and the flat pipe of Duo Gen inside and outside fin; The flat pipe of described inside and outside fin is the platypelloid type radiating tube of both ends open, and the internal diameter of the flat pipe of inside and outside fin is provided with the inner fin that internal diameter is separated into a plurality of paths, and the external diameter of the flat pipe of inside and outside fin is provided with many radiating fins; It is characterized in that: described upper perforated plate and lower perforated plate are provided with finned tube connecting hole corresponding to a plurality of positions; Described upper tube box is the housing of lower ending opening, and the lower end of described upper tube box and described upper perforated plate are connected to form the casing of sealing; Described lower tube box is the housing of upper end open, and the upper end of lower tube box and described lower perforated plate are connected to form the casing of sealing; A flat pipe of described inside and outside fin is installed between the finned tube connecting hole of upper perforated plate corresponding to each position and the finned tube connecting hole of lower perforated plate; Between upper perforated plate and the two ends of lower perforated plate, be respectively provided with a described end plate; On upper tube box or lower tube box, be provided with at least one with the entrance of adpting flange, on upper tube box or lower tube box, be provided with at least one with the outlet of adpting flange, the inner chamber of the inner chamber by upper tube box between outlet and entrance, many flat pipes of inside and outside fin, lower tube box forms gas channel.
2. the flat pipe of a kind of inside and outside fin according to claim 1 tube bank, is characterized in that: in one end of described upper tube box, be provided with one with the entrance of adpting flange, at the other end of described lower tube box, be provided with one with the outlet of adpting flange.
3. the flat pipe of a kind of inside and outside fin according to claim 1 tube bank, is characterized in that: in one end of described upper tube box, be provided with one with the entrance of adpting flange, at the other end of described upper tube box, be provided with one with the outlet of adpting flange; In described upper tube box, be provided with the pass partition of one or more separation inner chambers and described fin connecting hole, when the pass partition of described upper tube box is more than one, in lower tube box, be also provided with the pass partition of separating inner chamber and described fin connecting hole, the quantity of the pass partition in described lower tube box is that the quantity of the pass partition in described upper tube box subtracts one, and the position of the pass partition in lower tube box and the position of the pass partition in upper tube box are interspersed.
4. the flat pipe tube bank of a kind of inside and outside fin according to claim 1, is characterized in that: described upper tube box is semicircle tubulose housing, and the semicircle openend of upper tube box lower end and described upper perforated plate are connected to form the casing of sealing; Described lower tube box is semicircle tubulose housing, and the semicircle openend of lower tube box upper end and described lower perforated plate are connected to form the casing of sealing.
5. the flat pipe tube bank of a kind of inside and outside fin according to claim 1, is characterized in that: the width of the flat pipe of described inside and outside fin is 50mm～500mm, the length of the flat pipe of inside and outside fin is 3m～15m.
6. the flat pipe tube bank of a kind of inside and outside fin according to claim 1, is characterized in that: described upper perforated plate and lower perforated plate and the flat pipe of described inside and outside fin adopt material welding of the same race at connecting portion; Upper perforated plate and lower perforated plate and described upper tube box and lower tube box adopt material welding of the same race at connecting portion.
7. the flat pipe tube bank of a kind of inside and outside fin according to claim 6, is characterized in that: the material of described upper perforated plate and lower perforated plate is aluminium alloy plate, the flat pipe of described inside and outside fin adopts aluminum alloy material, and the material of described upper tube box and lower tube box is aluminium alloy.
8. the flat pipe tube bank of a kind of inside and outside fin according to claim 6, it is characterized in that: described upper perforated plate and lower perforated plate adopt the composite plate of steel, aluminium composite material Shaping by blast, the flat pipe of described inside and outside fin adopts aluminum alloy material, the flat pipe welding of the aluminium face of described upper perforated plate and lower perforated plate and inside and outside fin; Described upper tube box and lower tube box adopt steel, and the steel face of described upper perforated plate and lower perforated plate welds with upper tube box and lower tube box respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320408171.9U CN203443450U (en) | 2013-07-10 | 2013-07-10 | Tube bundle of flat tubes with inner fins and outer fins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320408171.9U CN203443450U (en) | 2013-07-10 | 2013-07-10 | Tube bundle of flat tubes with inner fins and outer fins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203443450U true CN203443450U (en) | 2014-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320408171.9U Expired - Fee Related CN203443450U (en) | 2013-07-10 | 2013-07-10 | Tube bundle of flat tubes with inner fins and outer fins |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203443450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571209A (en) * | 2015-12-30 | 2016-05-11 | 赵炜 | Heat exchanger provided with area-varying communication holes |
-
2013
- 2013-07-10 CN CN201320408171.9U patent/CN203443450U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571209A (en) * | 2015-12-30 | 2016-05-11 | 赵炜 | Heat exchanger provided with area-varying communication holes |
| CN105571209B (en) * | 2015-12-30 | 2017-03-08 | 青岛酒店管理职业技术学院 | A kind of heat exchanger of intercommunicating pore area change |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20140219 Termination date: 20200710 |