CN102080944A - Heat exchange tube internal radial direction ladder-type rotor - Google Patents
Heat exchange tube internal radial direction ladder-type rotor Download PDFInfo
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- CN102080944A CN102080944A CN2011100508918A CN201110050891A CN102080944A CN 102080944 A CN102080944 A CN 102080944A CN 2011100508918 A CN2011100508918 A CN 2011100508918A CN 201110050891 A CN201110050891 A CN 201110050891A CN 102080944 A CN102080944 A CN 102080944A
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- notch cuttype
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Abstract
The invention relates to a heat exchange tube internal radial direction ladder-type rotor, comprising a hollow shaft and ladder-type blades, wherein the ladder-type blades are arranged on the surface of the hollow shaft. The heat exchange tube internal radial direction ladder-type rotor is characterized in that: the outer diameter of each ladder-type blade is less than the inner diameter of a heat exchange tube; the surface of the ladder-type blade is smooth; the ladder-type blades are arranged around the hollow shaft and are in spiral shapes; the ladder surface structure or a wave-type structure is arranged on both the upstream face and the downstream face of the ladder-type blade along the radial direction of the hollow shaft; and the edge of the ladder-type blade firstly touching the water flow presents an inverted oblique angle or an inverted round angle. In the invention, axial force is generated to the ladder-type rotor when heat transfer fluid in the heat exchange tube flows and the flow of the fluid is hindered by the blade, therefore the flow direction of the fluid is changed and mixed flow is formed; in the meantime, the rotor is driven by the fluid to turn; the mixed flow of the heat transfer fluid is strengthened; part heat transfer fluid flows along the ladder surface of each blade and finally leaves the ladder surface to do eccentric exercise and is thrown to the inner wall surface of the heat exchange tube; thereby the fluid boundary layer at the inner wall surface is impacted and further the heat transfer is strengthened.
Description
Technical field
The present invention relates to a kind of interior inserted component that is applied to inner augmentation of heat transfer of heat exchanger tube in the equipment such as shell-and-tube heat exchanger, heat exchange reactor and antiscaling, descaling, being particularly related to a kind of is power with the heat exchanger tube internal heat transfer fluid, realizes the radial orders ladder type rotor of cleaning and heat-transfer enhancing function.
Background technology
In 21 century, energy-saving and emission-reduction have become common recognition human in the social development process.Heat exchanger is as chemical industry, oil refining, power, food, light industry, atomic energy, pharmacy, machinery and the widely used a kind of common apparatus of other many industrial departments, and its energy consumption problem is particularly noticeable.Shell-and-tube heat exchanger is as a kind of heat exchanger that is most widely used, exist the shortcoming of the inner dirt of deposition easily, these dirts make heat-transfer fluid increase at ducted transporting resistance, when serious even can blocking pipe, the thermal resistance that is caused by dirt also makes the heat exchange property of heat exchanger descend, in addition, the dirt that deposits in the heat exchanger tube often has corrosivity, and therefore tube wall can be corroded even cause leakage.Therefore, dirt deposition and augmentation of heat transfer become one of hot issue of people's research in the heat exchanger tube of solution shell-and-tube heat exchanger.The method and apparatus that has occurred many prevention dirt depositions in recent years, number of patent application is that 00249059.5 patent " a kind ofly is equipped with scale removal; the heat-transfer pipe of scale prevention device ", this patent has been introduced the method that twisted strip is realized augmentation of heat transfer has been installed in heat exchanger tube, concrete grammar is to put movable balls and be connected with bearing block one section of axostylus axostyle, the axostylus axostyle other end then is connected with spiral band, this method has reduced the friction between axostylus axostyle and the bearing block, make that the normal rotation of spiral band is guaranteed, but the position of spiral band in pipe well do not limited, may be subjected to the effect of fluid and the tube wall that rubs, cause the wearing and tearing of heat exchanger tube, and because spiral band is as a whole, the intraductal heat transfer fluid causes the bigger pressure in heat exchanger tube two ends to fall promoting to need bigger driving moment when tie rotates.China Patent No. is in the patent " rotator type cleaning and heat-transfer enhancing device " of ZL200520127121.9, introduced a kind of by fixed mount, rotor, the strengthening and heat transferring device that steel wire and stay pipe constitute, this device has the function of on-line automatic antiscaling, descaling and augmentation of heat transfer, under the situation of heat-transfer fluid following current or adverse current in heat exchanger tube, the effect of antiscaling, descaling and augmentation of heat transfer is all arranged, rotor related in this patent is when certain heat-transfer fluid passes through, the rotary speed of rotor is by the decision of the lead angle of spiral shell rib, rotary speed at spiral shell rib helical pitch hour rotor is fast more, resistance to heat-transfer fluid increases thereupon simultaneously, in the rotor rotation process heat-transfer fluid is had perturbation action, but the destruction in heat-transfer fluid boundary layer is not obvious near the heat exchanging inside pipe wall face.
Summary of the invention
The objective of the invention is to design a kind of rotor of new construction, the blade surface of this rotor is provided with the radial orders trapezoidal-structure, and this construction rotor has the effect that improves the heat exchanger tube heat transfer property, also has the effect of antiscaling, descaling simultaneously.
The technical solution used in the present invention is: notch cuttype rotor radially in the heat exchanger tube, by hollow shaft, the notch cuttype blade constitutes, the notch cuttype blade is positioned at the hollow shaft surface, notch cuttype blade external diameter is less than the heat exchanger tube internal diameter, the notch cuttype blade surface is smooth, the notch cuttype blade is around hollow shaft shape in the shape of a spiral, and the upstream face of notch cuttype blade and back side radially are being provided with ladder face structure or are being similar to the Wave-shaped structural of notch cuttype along hollow shaft, the seamed edge that the notch cuttype blade contacts with current at first carries out bevelling or rounding, hollow shaft along the circumferential direction has the hole that communicates with the hollow shaft endoporus equably away from inlet end, by changing the notch cuttype blade along the axial helical angle of hollow shaft, axial length and change the turning moment of fluid to rotor along hollow shaft height radially, the notch cuttype blade will be convenient to the installation of rotor in heat exchanger tube in the combination fixed form on the hollow shaft.When heat-transfer fluid flows through the notch cuttype blade, can produce axial force to rotor, heat-transfer fluid is mobile to change direction of flow thereby the notch cuttype blade hinders, form mixed flow, notch cuttype blade shape in the shape of a spiral around the hollow shaft, fluid promotes rotor rotation, the mixed flow of heat-transfer fluid self has also obtained reinforcement, thereby reach augmentation of heat transfer and stop the formation of dirt and the purpose of deposition, simultaneously segment fluid flow can flow along the notch cuttype radial surface on the notch cuttype blade in the rotor rotation process and finally do centrifugal motion and get rid of to the heat exchanger tube tube wall, this part fluid produces impact near the laminar boundary layer of the heat-transfer fluid tube wall, thereby destroy the laminar boundary layer of heat-transfer fluid, further realize the effect of antiscaling, descaling and augmentation of heat transfer, can be by changing the notch cuttype blade along the axial helical angle of hollow shaft, axial length and change the turning moment of fluid to rotor along hollow shaft height radially makes rotor rotating flow in heat exchanger tube smooth.The seamed edge that the notch cuttype blade contacts with current at first carries out the bevelling or the rounding structure makes rotor obtain certain rotation torque, helps the rotation of rotor, and the wedge shape space that this structure and heat exchanger tube form also helps the flow-disturbing in convection cell boundary layer.
Notch cuttype rotor radially in the heat exchanger tube of the present invention, can be two, three, four or a plurality of along the equally distributed notch cuttype blade of hollow shaft circumferencial direction number, single described rotor can be distributed with one, two or more notch cuttype blade along the hollow shaft axis direction.
Notch cuttype rotor radially in the heat exchanger tube of the present invention, the ladder number of notch cuttype blade surface can be one, two or more.
Notch cuttype rotor radially in the heat exchanger tube of the present invention, the step surface of the notch cuttype structure of notch cuttype blade surface can be parallel with the hollow shaft sagittal plane also can with the sagittal plane at an angle, notch cuttype blade upstream face or back side are inclination angle or vertical with the angle of step surface, and the inclination angle can provide the moment of torsion of some rotor rotation.
Notch cuttype rotor radially in the heat exchanger tube of the present invention, only the upstream face of notch cuttype blade or a face of back side are provided with the notch cuttype structure, and another face is smooth curved surface.
Notch cuttype rotor radially in the heat exchanger tube of the present invention, its hollow shaft cross sectional shape is open circles taper, hollow cylinder, hollow nodal figure or hollow many prismatics, the rotor hollow shaft has cross sectional shape away from inlet end and is semicircle, ellipse, rectangle or the trapezoidal hole that communicates with the hollow shaft endoporus, this hole can make in the space of heat-transfer fluid between hollow shaft and rotating shaft flows, and the dirt between drive hollow shaft and the rotating shaft is along with heat-transfer fluid is discharged, thereby prevented the deposition of dirt, saved material simultaneously.
Notch cuttype rotor radially in the heat exchanger tube of the present invention, the position outside the notch cuttype blade plants oneself on the hollow shaft offers through hole, and the cross sectional shape of through hole is semicircle, oval, rectangle or trapezoidal.
Notch cuttype rotor radially in the heat exchanger tube of the present invention, the surface of notch cuttype blade has the aperture of some, to reduce the flow through pressure loss of rotor of heat-transfer fluid.
Notch cuttype rotor radially in the heat exchanger tube of the present invention, notch cuttype blade and hollow shaft contact portion are arranged vertically, promptly parallel with the axis of hollow shaft endoporus, the part that the notch cuttype blade leaves hollow shaft is the arc that has trapezium structure, this arc reverses, the axis of its tangent line and rotor hollow shaft endoporus forms certain included angle, promptly not parallel with the axis of hollow shaft endoporus, current have the moment of torsion that makes the rotor rotation to the arc formation of notch cuttype blade space, the notch cuttype blade causes current to have certain mixed flow to the barrier effect of current, heat has exchange in fluid, current get rid of to the heat exchanger tube inwall along the notch cuttype blade, has the effect that destroys the boundary layer.
For prevent rotor in rotation process along the rotating shaft axial float, described rotor hollow shaft two ends are provided with coaxial configuration, the combination of the coaxial configuration of two adjacent rotor head and the tail has realized the axial location between rotor.The hollow shaft coaxial configuration of rotor can be ball-and-socket mode, circular cone mode, buckle mode or universal joint mode.
The number of notch cuttype structure on parameters such as the axial length of described rotor notch cuttype blade, radial height, lead angle and the notch cuttype blade, can be processed in conjunction with manufacturing according to working conditions such as velocity of medium in heat exchanger tube internal diameter, the pipe and determine originally, can take rotation or independent rotational structure synchronously between the adjacent rotor.
Described rotor is installed in the heat exchanger tube, can adjust the rotor number that is connected in the rotating shaft according to the physical length of heat exchanger tube, utilizes the suspension member countershaft that is fixed on the heat exchanger tube two ends to carry out axial restraint simultaneously.
The invention has the beneficial effects as follows: the rotor notch cuttype blade surface of 1, being invented has the notch cuttype structure, can under the prerequisite that does not increase notch cuttype blade radial height, improve the destructiveness in heat-transfer fluid boundary layer, heat exchanging inside pipe wall face place, thereby improve heat transfer efficiency; 2, the notch cuttype blade of rotor in rotary course except causing heat-transfer fluid around the circular motion of central axis, also to cause its centrifugal motion that throws away along cascaded surface, thereby reduced the possibility of dirt in rotor surface and heat exchanger tube inwall deposition; 3, the existence of notch cuttype blade surface notch cuttype structure makes and just can improve the destruction to the heat-transfer fluid boundary layer under the less situation of notch cuttype blade radial height, thereby has saved the cost of manufacture of rotor and helped installation; 4, the hole that communicates with the hollow shaft endoporus that has away from inlet end of single rotor hollow shaft can make heat-transfer fluid flow between hollow shaft inside and rotating shaft, driving dirt discharges from the space between hollow shaft inside and the rotating shaft, prevented the deposition of dirt, saved rotor material, provided cost savings.
Description of drawings
Fig. 1 is notch cuttype rotor-two a leaf sequential steps formula three-dimensional structure schematic diagram front view radially in the heat exchanger tube of the present invention.
Fig. 2 is notch cuttype rotor-two a leaf sequential steps formula three-dimensional structure schematic diagram radially in the heat exchanger tube of the present invention.
Fig. 3 is notch cuttype rotor-four a leaf sequential steps formula three-dimensional structure schematic diagram radially in the heat exchanger tube of the present invention.
Fig. 4 is notch cuttype rotor-four a leaf right-angled intersection staged three-dimensional structure schematic diagram radially in the heat exchanger tube of the present invention.
Fig. 5 is a notch cuttype rotor mounting structure schematic diagram radially in the heat exchanger tube of the present invention.
Among the figure, 1-notch cuttype blade, 2-hollow shaft, 3-ball-and-socket boss, 4-ball-and-socket concave station, the hole that 5-communicates, 6-suspension member, 7-heat exchanger tube, 8-rotating shaft, 9-coaxial configuration.
The specific embodiment
Be to the present invention relates in the heat exchanger tube radially a kind of implementation method of notch cuttype rotor as shown in Figure 5, this strengthening and heat transferring device comprises rotor, suspension member 6, heat exchanger tube 7 and rotating shaft 8, several rotors are cascaded by rotating shaft 8, connect by coaxial configuration 9 between the adjacent rotor, suspension member 6 is fixed in heat exchanger tube 7 two ends, rotating shaft 8 two ends link to each other with suspension member 6 respectively and realize that two ends fix, rotor is that the notch cuttype blade 1 by some is fixed on the hollow shaft 2 and constitutes the hole 5 that also has ball-and-socket boss 3, ball-and-socket concave station 4 on the hollow shaft 2 and communicate with the hollow shaft endoporus.Coaxial configuration 9 is dimerous by the ball-and-socket boss 3 and the ball-and-socket concave station 4 at rotor hollow shaft 2 two ends in this example, in two adjacent rotor, thereby the ball-and-socket boss 3 of hollow shaft 2 heads of a rotor and the ball-and-socket concave station 4 of another rotor afterbody combine to play and are connected and adjust the effect that makes it coaxial, this structure also is a kind of flexible connecting structure that can adapt to heat exchanger tube 7 knees, coaxial configuration 9 is except can adopting the ball-and-socket mode, can also adopt the circular cone mode, buckle mode and universal joint mode can also adopt planar structure under the less demanding situation of axiality.
As shown in Figures 1 to 4, hollow shaft 2 cross sectional shapes of rotor are cylindrical; As Fig. 1 and Fig. 2 is two leaf sequential steps type rotors, has 1, two notch cuttype blade 1 of two notch cuttype blades to distribute relatively on the rotor hollow shaft 2, also has ball-and-socket boss 3, ball-and-socket concave station 4 and the uniform hole 5 that communicates with the hollow shaft endoporus on the hollow shaft 2; Fig. 3 is four leaf sequential steps type rotors, and 4 notch cuttype blades 1 are arranged on the hollow shaft 2, wherein 4 step vanes 1 in twos one group vertically order arrange, two groups of notch cuttype blades are arranged relatively; Fig. 4 is four leaf right-angled intersection notch cuttype rotors, and 4 notch cuttype blades 1 are arranged on the hollow shaft 2, the 90 ° of cross arrangements each other of these four notch cuttype blades 1.
Among the present invention, heat-transfer fluid in the heat exchanger tube 7 can produce axial force and rotating torque to rotor in flow process, notch cuttype blade 1 changes direction of flow, form mixed flow, notch cuttype blade 1 shape in the shape of a spiral around the hollow shaft, fluid promotes rotor rotation, the mixed flow of heat-transfer fluid self has also obtained reinforcement, thereby reach the purpose of augmentation of heat transfer and prevention dirt deposition, meanwhile, the part heat-transfer fluid flows along the cascaded surface of notch cuttype blade 1, and finally leaves notch cuttype blade 1 and do centrifugal motion and get rid of to heat exchanger tube 7 internal faces, heat-transfer fluid boundary layer, internal face place is produced impact, further realize augmentation of heat transfer by destroying the boundary layer.This kind form rotor can reduce the radial height of notch cuttype blade 1, simultaneously by changing the helical angle of notch cuttype blade 1, radial width and axial length change the rotating torque of heat-transfer fluid to rotor, guarantee the smoothness rotation of rotor, it is mobile between hollow shaft 2 inside and rotating shaft 8 that heat-transfer fluid is convenient in rotor hollow shaft 2 holes 5 that communicate with the hollow shaft endoporus that open away from inlet end, the dirt that drives between hollow shaft 2 inside and the rotating shaft 8 is discharged, prevented the deposition of dirt, in addition, the radial height by reducing step vane 1 and on hollow shaft 2, offer the hole 5 that communicates with the hollow shaft endoporus and can save material and processing cost.
Claims (10)
1. notch cuttype rotor radially in the heat exchanger tube, constitute by hollow shaft, notch cuttype blade, the notch cuttype blade is positioned at the hollow shaft surface, it is characterized in that: notch cuttype blade external diameter is less than the heat exchanger tube internal diameter, the notch cuttype blade surface is smooth, the notch cuttype blade is around hollow shaft shape in the shape of a spiral, and the upstream face of notch cuttype blade and back side radially be provided with ladder face structure or Wave-shaped structural along hollow shaft, and the seamed edge that the notch cuttype blade contacts with current at first carries out bevelling or rounding.
2. notch cuttype rotor radially in the heat exchanger tube according to claim 1, it is characterized in that: along the equally distributed notch cuttype blade of hollow shaft circumferencial direction number is two, three, four or a plurality of, is distributed with one, two or more notch cuttype blade along the hollow shaft axis direction.
3. notch cuttype rotor radially in the heat exchanger tube according to claim 1, it is characterized in that: the ladder number of described notch cuttype blade surface is one, two or more.
4. notch cuttype rotor radially in the heat exchanger tube according to claim 1, it is characterized in that: the step surface of the notch cuttype structure of described notch cuttype blade surface parallel with the hollow shaft sagittal plane or with the sagittal plane at an angle, notch cuttype blade upstream face or back side are inclination angle or vertical with the angle of step surface.
5. notch cuttype rotor radially in the heat exchanger tube according to claim 1, it is characterized in that: a face of the upstream face of notch cuttype blade or back side is provided with the notch cuttype structure, and another face is smooth curved surface.
6. notch cuttype rotor radially in the heat exchanger tube according to claim 1 is characterized in that: described hollow shaft along the circumferential direction has the cross sectional shape that communicates with described hollow shaft endoporus equably and is semicircle, oval, rectangle or trapezoidal hole away from inlet end.
7. notch cuttype rotor radially in the heat exchanger tube according to claim 1 is characterized in that: the position outside the above notch cuttype blade of described hollow shaft plants oneself offers cross sectional shape and is semicircle, oval, rectangle or trapezoidal through hole.
8. notch cuttype rotor radially in the heat exchanger tube according to claim 1, it is characterized in that: the surface of described notch cuttype blade has aperture.
9. notch cuttype rotor radially in the heat exchanger tube according to claim 1, it is characterized in that: the cross sectional shape of described hollow shaft is open circles taper, hollow cylinder, hollow nodal figure or hollow many prismatics, and the hollow shaft two ends are provided with the coaxial configuration of ball-and-socket mode, circular cone mode, buckle mode or universal joint mode.
10. notch cuttype rotor radially in the heat exchanger tube according to claim 1, it is characterized in that: described notch cuttype blade and described hollow shaft contact portion are arranged vertically, the part that this notch cuttype blade leaves hollow shaft is the arc that has trapezium structure, this arc reverses, and the axis of its tangent line and rotor hollow shaft endoporus forms angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100508918A CN102080944A (en) | 2011-03-03 | 2011-03-03 | Heat exchange tube internal radial direction ladder-type rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100508918A CN102080944A (en) | 2011-03-03 | 2011-03-03 | Heat exchange tube internal radial direction ladder-type rotor |
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| Publication Number | Publication Date |
|---|---|
| CN102080944A true CN102080944A (en) | 2011-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100508918A Pending CN102080944A (en) | 2011-03-03 | 2011-03-03 | Heat exchange tube internal radial direction ladder-type rotor |
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| CN (1) | CN102080944A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425975A (en) * | 2011-12-02 | 2012-04-25 | 北京化工大学 | Internal grooving helical blade rotor for heat exchange tube |
| CN103217055A (en) * | 2013-05-02 | 2013-07-24 | 北京化工大学 | Opposite-rotation-direction combined rotor in heat exchange tube |
| CN103217054A (en) * | 2013-04-27 | 2013-07-24 | 北京化工大学 | Porous screw blade rotor in heat exchange tube |
| CN104764355A (en) * | 2015-04-14 | 2015-07-08 | 北京化工大学 | Zigzag spiral blade rotor inside heat exchange tube |
| CN110285694A (en) * | 2019-06-19 | 2019-09-27 | 武汉方特工业设备技术有限公司 | Coiled channel heat exchanger |
-
2011
- 2011-03-03 CN CN2011100508918A patent/CN102080944A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425975A (en) * | 2011-12-02 | 2012-04-25 | 北京化工大学 | Internal grooving helical blade rotor for heat exchange tube |
| CN102425975B (en) * | 2011-12-02 | 2012-12-12 | 北京化工大学 | Internal grooving helical blade rotor for heat exchange tube |
| CN103217054A (en) * | 2013-04-27 | 2013-07-24 | 北京化工大学 | Porous screw blade rotor in heat exchange tube |
| CN103217055A (en) * | 2013-05-02 | 2013-07-24 | 北京化工大学 | Opposite-rotation-direction combined rotor in heat exchange tube |
| CN103217055B (en) * | 2013-05-02 | 2014-07-09 | 北京化工大学 | Opposite-rotation-direction combined rotor in heat exchange tube |
| CN104764355A (en) * | 2015-04-14 | 2015-07-08 | 北京化工大学 | Zigzag spiral blade rotor inside heat exchange tube |
| CN110285694A (en) * | 2019-06-19 | 2019-09-27 | 武汉方特工业设备技术有限公司 | Coiled channel heat exchanger |
| CN110285694B (en) * | 2019-06-19 | 2024-03-12 | 武汉方特工业设备技术有限公司 | Coiled pipe type channel heat exchanger |
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Owner name: BEIJING HUAXIA YINGLAN TECHNOLOGY DEVELOPMENT CO., Free format text: FORMER OWNER: BEIJING SINO ECO-TECH. CO., LTD. Effective date: 20110728 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 100102 CHAOYANG, BEIJING TO: 100029 CHAOYANG, BEIJING |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20110728 Address after: 100029, Beijing, Chaoyang District cherry East Street, 11 floor, 3 door, Room 202 Applicant after: Beijing Huaxia Yinglan Technology Development Co., Ltd. Address before: 100102, Beijing Wangjing Chaoyang District Development Zone love building block A 3 Applicant before: Beijing Huaxia Yitai Technology Co., Ltd. |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110601 |