CN103573642A - Centrifugal pump - Google Patents
Centrifugal pump Download PDFInfo
- Publication number
- CN103573642A CN103573642A CN201310318558.XA CN201310318558A CN103573642A CN 103573642 A CN103573642 A CN 103573642A CN 201310318558 A CN201310318558 A CN 201310318558A CN 103573642 A CN103573642 A CN 103573642A
- Authority
- CN
- China
- Prior art keywords
- impeller
- centrifugal pump
- shroud
- internal surface
- pump assembly
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
- F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- F04D29/4246—Fan casings comprising more than one outlet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Embodiments of the disclosure include a centrifugal pump assembly including a pump housing defining a cavity and an impeller disposed within the cavity, the impeller being affixed to a shaft. The pump housing includes an inner surface having a geometric pattern configured in increase a turbulence of a fluid flow over the inner surface. The impeller includes one or more blades and a shroud. The inner surface of the pump housing and the shroud of the impeller define a leakage path.
Description
the cross reference of related application
Present patent application requires the preference of the U.S. Provisional Patent Application sequence number 61/676,024 of submission on July 26th, 2012, and the full content of this U. S. application is incorporated herein by reference.
Technical field
Exemplary embodiment of the present invention relates to pump assembly, relates more specifically to have the centrifugal pump assembly of the efficiency of raising.
Background technique
It is cooling that axle drive-type centrifugal pump is generally used for motor car engine.By making water or other flow axis operate centrifugal pump to entering in pump and being radially discharged in one or more spiral cases.Conventionally by engine crankshaft axle described in Mechanical Driven directly or indirectly, therefore described axle rotates with speed proportional to engine speed.Generally speaking, centrifugal pump is included in the impeller rotating in container.Impeller comprises the shroud at the edge that is attached to impeller blade, and this shroud is for helping to guide the area of low pressure at fluid Cong Beng center to flow to the high-pressure area of pump outer rim.
Conventionally, centrifugal pump comprises at the pump chamber near shroud place and the leakage paths that forms between pump chamber and shroud.Due in this separating surface place leak fluid, so the hydraulic efficiency of pump is mainly subject to the standoff effects between shroud and pump chamber.Therefore, conventionally minimize the space between shroud and pump chamber.Yet manufacturing tolerances has limited the degree that space can be minimized.
Generally speaking, the design of pump affects the efficiency of pump.The raising of pump efficiency means and when driven pump, consumes less power, and can improve fuel economy.In addition, the nonperfect fluid in pump flows and can in flow field, cause flow separation, and this has reduced pump duty and can cause less desirable pump noise due to cavitation.
Summary of the invention
In one exemplary embodiment, a kind of centrifugal pump assembly comprises the pump case that limits chamber.Described pump case comprises internal surface, and this internal surface has the geometrical pattern of the turbulent flow that is configured to increase the fluid stream that flows through described internal surface.Centrifugal pump assembly also comprises the impeller that is arranged in chamber, and described impeller comprises one or more blades and shroud.Centrifugal pump assembly further comprises the axle that is fixed to impeller.The internal surface of pump case and the shroud of impeller limit leakage paths.
In a further exemplary embodiment, a kind of centrifugal pump assembly comprises the pump case that limits chamber, and wherein, pump case comprises internal surface.Centrifugal pump assembly also comprises the impeller that is arranged in chamber, and described impeller has one or more blades and shroud.Centrifugal pump assembly also comprises the axle that is fixed to impeller.The outer surface of the internal surface of pump case and the shroud of impeller limits leakage paths.At least one in the internal surface of pump case and the outer surface of shroud comprises the geometrical pattern of the turbulent flow of the fluid stream that is configured to maximize in leakage paths.
Scheme
1.an assembly, comprising:
The pump case that limits chamber, wherein, pump case comprises internal surface, this internal surface has the geometrical pattern of the turbulent flow that is configured to increase the fluid stream that flows through described internal surface;
Be arranged in the impeller in chamber, wherein, impeller comprises one or more blades and shroud; And
Be fixed to the axle of impeller;
Wherein, the internal surface of pump case and the shroud of impeller limit leakage paths.
Scheme
2.according to the centrifugal pump assembly described in scheme 1, wherein, described geometrical pattern comprises a series of coaxial ribs.
Scheme
3.according to the centrifugal pump assembly described in scheme 1, wherein, described geometrical pattern comprises a series of coaxial labyrinth seal rings.
Scheme
4.according to the centrifugal pump assembly described in scheme 1, wherein, described geometrical pattern comprises a plurality of projections towards shroud projection.
Scheme
5.according to the centrifugal pump assembly described in scheme 4, wherein, described a plurality of projections have semi-spherical shape, Pyramid or cone shape.
Scheme
6.according to the centrifugal pump assembly described in scheme 1, wherein, described geometrical shape is configured to maximize the turbulent flow of the fluid stream in leakage paths, and wherein, the turbulent flow that increases the fluid stream in leakage paths causes the volume of fluid stream to reduce.
Scheme
7.an assembly, comprising:
The pump case that limits chamber, wherein, pump case comprises internal surface;
Be arranged in the impeller in chamber, wherein, impeller comprises one or more blades and shroud;
Be fixed to the axle of impeller;
Wherein, the outer surface of the internal surface of pump case and the shroud of impeller limits leakage paths; And
Wherein, at least one in the internal surface of pump case and the outer surface of shroud comprises the geometrical pattern of the turbulent flow of the fluid stream that is configured to maximize in leakage paths, and wherein, the turbulent flow that increases the fluid stream in leakage paths causes the volume of fluid stream to reduce.
Scheme
8.according to the centrifugal pump assembly described in scheme 7, wherein, described geometrical pattern comprises a series of coaxial ribs.
Scheme
9.according to the centrifugal pump assembly described in scheme 7, wherein, described geometrical pattern comprises a series of coaxial labyrinth seal rings.
Scheme
10.according to the centrifugal pump assembly described in scheme 7, wherein, described geometrical pattern comprises a plurality of projections towards shroud projection.
Scheme
11.according to the centrifugal pump assembly described in scheme 7, wherein, by cast aluminum-molykote composite material, form described pump case, and in casting process, form described geometrical pattern.
Scheme
12.according to the centrifugal pump assembly described in scheme 7, wherein, by cast aluminum-molykote composite material, form described pump case, and form described geometrical pattern by machining pump case.
By following detailed description of carrying out by reference to the accompanying drawings of the present invention, above feature and advantage of the present invention and further feature and advantage are apparent.
Accompanying drawing explanation
Other object, feature, advantage and details only by way of example mode in to embodiment's following detailed description, manifested, described detailed description is consulted accompanying drawing and is carried out, wherein:
Fig. 1 is the side cross-sectional view of centrifugal pump assembly;
Fig. 2 is the planimetric map of pump case of the centrifugal pump assembly of Fig. 1;
Fig. 3 is according to the side cross-sectional view of the centrifugal pump assembly of an exemplary embodiment;
Fig. 4 is according to the stereogram of the pump case of an exemplary embodiment;
Fig. 5 is according to the planimetric map of the pump case of another exemplary embodiment; And
Fig. 6 is according to the planimetric map of the pump case of another exemplary embodiment.
Embodiment
Below describing is only exemplary in essence, and is not intended to limit the present invention and application or purposes.Should be appreciated that, in institute's drawings attached, corresponding reference character represents similar or corresponding parts or feature.
Referring now to Fig. 1, the figure shows centrifugal pump assembly 100.Centrifugal pump assembly 100 comprises pump case 110, and pump case 110 comprises chamber 112 and one or more spiral case 114.In addition, centrifugal pump assembly 100 comprises rotatable shaft 104 and prevents that fluid from passing the Sealing 106 that axle 104 flows out from chamber 112.Centrifugal pump assembly 100 also comprises the impeller 120 that is positioned at chamber 112, makes axle 104 extend through the hole 122 of impeller 120.Impeller 120 is mounted on axle 104, so that rotation together with axle 104.Impeller 120 comprises blade 124 and shroud 126.Shroud 126 is fixed to impeller 120 and is configured to rotation together with impeller 120.The shroud 126 of impeller 120 is arranged to the internal surface 116 near chamber 112.Shroud 126 limits leakage paths 140 with the interval of the internal surface 116 in chamber 112.The hydraulic efficiency of pump is affected by the fluid flow in leakage paths 140 mainly.Therefore, conventionally minimize the space between shroud 126 and the internal surface 116 in chamber 112, to minimize by the fluid flow of leakage paths 140.Conventionally, as best in Fig. 2 institute illustrating, internal surface 116 has essentially smooth surface.
In the exemplary embodiment, the internal surface 116 in chamber 112 comprises the geometrical pattern of the turbulent flow of the fluid stream that is configured to increase in leakage paths 140.By increase, pass through the turbulent flow of the fluid stream of leakage paths 140, can reduce the fluid volume by leakage paths and can improve the volumetric efficiency of pump 100.In the exemplary embodiment, the geometrical pattern appending on the internal surface 116 in chamber can not reduce minimal physical interval required between shroud and the internal surface in chamber.In the exemplary embodiment, can increase by multiple different geometrical shape the turbulent flow of the fluid stream in leakage paths.
Referring now to Fig. 3, the figure shows according to the cross section of the centrifugal pump assembly 200 of an exemplary embodiment.Centrifugal pump assembly 200 is that axle drives centrifugal automatic pump, and that still advocates the invention is not restricted to this.Centrifugal pump assembly 200 comprises pump case 210, and pump case 210 comprises chamber 212 and one or more spiral case (not shown).In addition, centrifugal pump assembly 200 comprises rotatable shaft 204 and prevents that fluid from passing the Sealing 206 that axle 204 flows out from chamber 212.Centrifugal pump assembly 200 also comprises the impeller 220 that is positioned at chamber 212, makes axle 204 extend through the hole 222 of impeller 220.Impeller 220 is mounted on axle 204, so that rotation together with axle 204.Impeller 220 comprises blade and shroud 226.Shroud 226 is fixed to impeller 220 and is configured to rotation together with impeller 220.The shroud 226 of impeller 220 is arranged to the internal surface 216 near chamber 212.Shroud 226 limits leakage paths 240 with the interval of the internal surface 216 in chamber 212.
In the exemplary embodiment, the internal surface 216 in chamber 212 comprises geometrical pattern 230.In the exemplary embodiment, geometrical pattern 230 can comprise the multiple different geometries of the turbulent flow of the fluid stream that is configured to increase in leakage paths 240.By increasing the turbulent flow of the fluid stream in leakage paths 240, can reduce the fluid volume by leakage paths and can improve the hydraulic efficiency of pump.In alternative exemplary embodiment, the geometrical pattern that is configured to increase the turbulent flow of the fluid stream in leakage paths 240 can be positioned on the outer surface of the shroud 226 adjacent with the internal surface 216 in chamber 212.In a further exemplary embodiment, the geometrical pattern that is configured to increase the turbulent flow of fluid in leakage paths 240 stream can be positioned at the outer surface of shroud 226 and the internal surface in chamber 212 216 on both.In the exemplary embodiment, the internal surface 216 in chamber 212 and the geometrical pattern of shroud 226 form labyrinth sealing.Generally speaking, chamber is passed in labyrinth sealing path by forming in check fluid whirlpool and then limit fluid provides noncontact seal, and this in check whirlpool obtains by flowing through sharp-pointed edge or flowing through tortuous passage.
Referring now to Fig. 4, the figure shows the pump case 310 according to exemplary embodiment.As shown in the figure, internal surface 316 comprises and is configured to increase the geometrical pattern 330 of turbulent flow of fluid stream of internal surface 316 of flowing through.In the exemplary embodiment, geometrical pattern 330 can comprise a series of sharp edges to coaxial rib 332 forms of upper process towards the shroud of impeller.In the exemplary embodiment, the sharp edges of rib 332 causes leakage flow and every nook and cranny local detachment, the amount that this has limited effective cross-sectional flow area and has therefore reduced leakage flow.
Referring now to Fig. 5, the figure shows the pump case 410 according to another exemplary embodiment.As shown in the figure, internal surface 416 comprises and is configured to increase the geometrical pattern 430 of turbulent flow of fluid stream of internal surface 416 of flowing through.In the exemplary embodiment, geometrical pattern 430 can comprise and is attached to form a series of coaxial labyrinth ring 432 to the spiral of upper process towards the shroud of impeller.In the exemplary embodiment, encircle 432 apical margin and cause leakage flow and every nook and cranny local detachment, the amount that this has limited effective cross-sectional flow area and has therefore reduced leakage flow.
Referring now to Fig. 6, the figure shows the pump case 510 according to another exemplary embodiment.As shown in the figure, internal surface 516 comprises and is configured to increase the geometrical pattern 530 of turbulent flow of fluid stream of internal surface 516 of flowing through.In the exemplary embodiment, geometrical pattern 530 can comprise that shroud towards impeller is to a plurality of protruding 532 of upper process.In the exemplary embodiment, projection 532 can have illustrated stairstepping or can have smooth surface.In the exemplary embodiment, projection 532 causes leakage flow to redirect partly at each protruding 532 place, and this increases the length of flow path and causes pressure drop, reduces thus the amount of leakage flow.In the exemplary embodiment, can be a plurality of protruding 532 with multiple layout placement, and each in a plurality of protruding 532 can have multiple difformity.For example, projection 532 can have semi-spherical shape, Pyramid, cone shape or any other suitable shape.In the exemplary embodiment, can optimize layout and the shape of a plurality of protruding 532 on internal surface 516, to maximize the turbulent flow causing on projection 532 streams of the fluid at the internal surface 516 of flowing through.
It will be understood by those skilled in the art that the geometrical shape on the internal surface that chamber is set shown in Fig. 4-6 only provides for exemplary purpose, and the geometrical shape of scope of the present invention shown in not being limited to.
In the exemplary embodiment, by the turbulent flow of the fluid stream in the leakage paths of increase centrifugal pump assembly, can improve the efficiency of centrifugal pump.For example,, by reduce the fluid flow in leakage paths, can increase the amount of the fluid stream that flows through spiral case in the situation that not needing extra power to carry out operating pumps.Although reduce the volumetric efficiency that leakage flow can improve pump, still may have adverse effect to its mechanical efficiency.Yet, have been found that the raising of volumetric efficiency is greater than the loss of mechanical efficiency, and therefore total hydraulic efficiency can improve 1-2%.
In the exemplary embodiment, pump case can be cast aluminium, and geometrical pattern can form or can after having cast pump case, be machined in the internal surface of pump case in casting process.In other exemplary embodiment, pump case can be made by composite material, and geometrical pattern can be formed on the internal surface of pump case in manufacture process.
Although described the present invention with reference to exemplary embodiment, it should be appreciated by those skilled in the art that without departing from the present invention, can carry out various changes and can carry out equivalence to element of the present invention substituting to the present invention.In addition, in the situation that not departing from base region of the present invention, can carry out various remodeling to the present invention, so that particular case or material adapt to instruction of the present invention.Therefore, the present invention will not be limited to as plan and carry out preferred forms of the present invention and disclosed specific embodiment, but by all embodiments that comprise in the scope that drops on the application.
Claims (10)
1. a centrifugal pump assembly, comprising:
The pump case that limits chamber, wherein, pump case comprises internal surface, this internal surface has the geometrical pattern of the turbulent flow that is configured to increase the fluid stream that flows through described internal surface;
Be arranged in the impeller in chamber, wherein, impeller comprises one or more blades and shroud; And
Be fixed to the axle of impeller;
Wherein, the internal surface of pump case and the shroud of impeller limit leakage paths.
2. centrifugal pump assembly according to claim 1, wherein, described geometrical pattern comprises a series of coaxial ribs.
3. centrifugal pump assembly according to claim 1, wherein, described geometrical pattern comprises a series of coaxial labyrinth seal rings.
4. centrifugal pump assembly according to claim 1, wherein, described geometrical pattern comprises a plurality of projections towards shroud projection.
5. centrifugal pump assembly according to claim 4, wherein, described a plurality of projections have semi-spherical shape, Pyramid or cone shape.
6. centrifugal pump assembly according to claim 1, wherein, described geometrical shape is configured to maximize the turbulent flow of the fluid stream in leakage paths, and wherein, the turbulent flow that increases the fluid stream in leakage paths causes the volume of fluid stream to reduce.
7. a centrifugal pump assembly, comprising:
The pump case that limits chamber, wherein, pump case comprises internal surface;
Be arranged in the impeller in chamber, wherein, impeller comprises one or more blades and shroud;
Be fixed to the axle of impeller;
Wherein, the outer surface of the internal surface of pump case and the shroud of impeller limits leakage paths; And
Wherein, at least one in the internal surface of pump case and the outer surface of shroud comprises the geometrical pattern of the turbulent flow of the fluid stream that is configured to maximize in leakage paths, and wherein, the turbulent flow that increases the fluid stream in leakage paths causes the volume of fluid stream to reduce.
8. centrifugal pump assembly according to claim 7, wherein, described geometrical pattern comprises a series of coaxial ribs.
9. centrifugal pump assembly according to claim 7, wherein, described geometrical pattern comprises a series of coaxial labyrinth seal rings.
10. centrifugal pump assembly according to claim 7, wherein, described geometrical pattern comprises a plurality of projections towards shroud projection.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261676024P | 2012-07-26 | 2012-07-26 | |
| US61/676024 | 2012-07-26 | ||
| US13/655361 | 2012-10-18 | ||
| US13/655,361 US20140030086A1 (en) | 2012-07-26 | 2012-10-18 | Centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103573642A true CN103573642A (en) | 2014-02-12 |
Family
ID=49995064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310318558.XA Pending CN103573642A (en) | 2012-07-26 | 2013-07-26 | Centrifugal pump |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20140030086A1 (en) |
| CN (1) | CN103573642A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EA202191002A1 (en) * | 2017-10-12 | 2021-09-09 | Уэйр Минералз Острэйлиа Лтд | INLET COMPONENT FOR SLUDGE PUMP |
| US11105334B2 (en) * | 2019-05-17 | 2021-08-31 | Ford Global Technologies, Llc | Dual volute coolant pump |
| US20230375003A1 (en) * | 2020-10-29 | 2023-11-23 | Weir Minerals Australia Ltd. | Grooved Side Liner For Centrifugal Pump |
| DE102021110936A1 (en) * | 2021-04-28 | 2022-11-03 | Herborner Pumpentechnik Gmbh & Co Kg | Pump impeller, casing member and pump herewith |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU640042A1 (en) * | 1977-03-21 | 1978-12-30 | Предприятие П/Я А-7142 | Centrifugal pump |
| SU1097825A1 (en) * | 1982-11-10 | 1984-06-15 | Aleksandrov Stanislav L | Centrifugal pump |
| SU1110937A1 (en) * | 1982-12-16 | 1984-08-30 | Bykovskij Aleksandr A | Centrifugal pump |
| SU1183711A1 (en) * | 1984-05-15 | 1985-10-07 | Предприятие П/Я Г-4634 | Inclined archimedian screw centrifugal pump |
| GB2359339A (en) * | 2000-02-01 | 2001-08-22 | Caradon Mira Ltd | Centrifugal pump with means for assisting the flow of air entrained in a liquid |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2851289A (en) * | 1957-03-22 | 1958-09-09 | Thiokol Chemical Corp | Recirculation seal with plastic wear ring for hydraulic apparatus |
| US3076412A (en) * | 1959-03-04 | 1963-02-05 | Bell & Gossett Co | Method and apparatus for maintaining rotating pump seals |
| US3447475A (en) * | 1967-01-09 | 1969-06-03 | Albert Blum | Centrifugal pump |
| CH467941A (en) * | 1967-07-03 | 1969-01-31 | Escher Wyss Ag | Labyrinth seal on a hydraulic centrifugal machine, the rotor of which revolves at times in water and at times in air. |
| US5106262A (en) * | 1986-11-13 | 1992-04-21 | Oklejas Robert A | Idler disk |
| JP3567064B2 (en) * | 1997-06-23 | 2004-09-15 | 株式会社 日立インダストリイズ | Labyrinth seal device and fluid machine provided with the same |
| EP0924386B1 (en) * | 1997-12-23 | 2003-02-05 | ABB Turbo Systems AG | Method and device to seal off the space between a rotor and a stator |
| US20040136825A1 (en) * | 2001-08-08 | 2004-07-15 | Addie Graeme R. | Multiple diverter for reducing wear in a slurry pump |
| SE525412C2 (en) * | 2003-10-20 | 2005-02-15 | Itt Mfg Enterprises Inc | Centrifugal pump for contaminated liquids, comprises wheel with scoops and cover plates with spiral grooves around casing inlet |
| US7775763B1 (en) * | 2007-06-21 | 2010-08-17 | Florida Turbine Technologies, Inc. | Centrifugal pump with rotor thrust balancing seal |
-
2012
- 2012-10-18 US US13/655,361 patent/US20140030086A1/en not_active Abandoned
-
2013
- 2013-07-26 CN CN201310318558.XA patent/CN103573642A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU640042A1 (en) * | 1977-03-21 | 1978-12-30 | Предприятие П/Я А-7142 | Centrifugal pump |
| SU1097825A1 (en) * | 1982-11-10 | 1984-06-15 | Aleksandrov Stanislav L | Centrifugal pump |
| SU1110937A1 (en) * | 1982-12-16 | 1984-08-30 | Bykovskij Aleksandr A | Centrifugal pump |
| SU1183711A1 (en) * | 1984-05-15 | 1985-10-07 | Предприятие П/Я Г-4634 | Inclined archimedian screw centrifugal pump |
| GB2359339A (en) * | 2000-02-01 | 2001-08-22 | Caradon Mira Ltd | Centrifugal pump with means for assisting the flow of air entrained in a liquid |
Also Published As
| Publication number | Publication date |
|---|---|
| US20140030086A1 (en) | 2014-01-30 |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20170721 |