EP2798223A1 - Adaptateur pour pompes a vide et dispositif de pompage associe - Google Patents
Adaptateur pour pompes a vide et dispositif de pompage associeInfo
- Publication number
- EP2798223A1 EP2798223A1 EP12818501.4A EP12818501A EP2798223A1 EP 2798223 A1 EP2798223 A1 EP 2798223A1 EP 12818501 A EP12818501 A EP 12818501A EP 2798223 A1 EP2798223 A1 EP 2798223A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- outlet
- adapter
- vacuum pumps
- turbomolecular vacuum
- cylindrical
- 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.)
- Granted
Links
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
- F04D19/00—Axial-flow pumps
- F04D19/02—Multi-stage pumps
- F04D19/04—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
- F04D19/042—Turbomolecular vacuum 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
- F04D19/00—Axial-flow pumps
- F04D19/02—Multi-stage pumps
- F04D19/04—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
- F04D19/046—Combinations of two or more different types of 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
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
-
- 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
- F04D29/60—Mounting; Assembling; Disassembling
-
- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
Definitions
- the present invention relates to turbomolecular vacuum pumps that are connected to an enclosure to generate a high vacuum.
- Turbomolecular type vacuum pumps consisting of a pump body receiving a housing and in which a rotor is driven in rapid rotation, for example a rotation at more than thirty thousand revolutions per minute, are generally used.
- the pump body has a suction port, coaxial with the rotor, which is connected to an outlet of the enclosure.
- the pump is secured to the fixed structure of the enclosure only and its support is effected by the single zone surrounding the pump suction port and the corresponding outlet of the fixed structure.
- the pump body comprises a coaxial annular connecting flange surrounding the suction orifice, which is plated and screwed to the fixed structure or to an intermediate connection itself connected to the fixed structure, to secure the vacuum pump to the fixed structure.
- turbomolecular pumps can absorb large gas flows.
- 450 mm etching processes require that turbomolecular vacuum pumps be capable of absorbing gas flows of the order of 2000 to 2500 sccm ("Standard Cubic Centimeters per Minute") for pressures in the field. enclosure of the order of 5 to 7 mtorr.
- the vacuum pumps must have pumping capacities greater than about 6000 1 / s.
- turbomolecular vacuum pumps can achieve such pumping capabilities.
- one solution consists in connecting several turbomolecular vacuum pumps in parallel to the same enclosure, so as to sum up the respective pumping capacities.
- a variable conductance control valve is generally used to regulate the pressure.
- the control valve is connected between the outlet of the chamber and the suction port of the turbomolecular vacuum pump.
- the control of the opening more or less large of the valve, allows to regulate the pressure of the chamber according to the gas flows present in the enclosure. It is therefore understood that with several vacuum pumps connected to the enclosure, it becomes difficult to regulate at the same time several control valves, since the control of each can cause a different variation of pressure in the chamber, in particular the does the positioning of the vacuum pump. This additional difficulty also contributes to the inhomogeneity of the pumping speeds in the enclosure.
- One of the aims of the present invention is to propose an adapter for vacuum pumps and a pumping device which at least partially solve the problems of the state of the art.
- the subject of the invention is an adapter for vacuum pumps characterized in that it comprises an inlet annular flange intended to be connected to an outlet orifice of an enclosure and an outlet connection comprising at least one two cylindrical output housing, through and forming at least a partial pump body for the housing of a respective turbomolecular vacuum pump, said turbomolecular vacuum pumps being intended to be received in a respective cylindrical outlet housing.
- the outlet fitting comprises a first series of threaded holes, arranged around each outer opening of said cylindrical output housing and the adapter comprises complementary first fixing screws, the first series of threaded holes and said first screws; complementary fastening means for fastening a pump body of a turbomolecular vacuum pump to the adapter,
- cylindrical outlet housings have a substantially identical volume and are arranged substantially symmetrically in the outlet connection
- the portion of the adapter connecting the annular inlet flange and the outlet fitting is frustoconical
- the internal diameter of the base of the frustoconical portion is substantially equal to the diameter of the circle in which the projections of the diameters of the suction orifices of the turbomolecular vacuum pumps are inscribed; the outlet connection has a central dome protruding between said housings; cylindrical,
- the adapter comprises a central tubular passage, coaxial with the annular inlet flange, passing through the center of the outlet fitting, between said cylindrical housings,
- the invention also relates to a pumping device characterized in that it comprises an adapter for vacuum pumps as described above and at least two turbomolecular vacuum pumps housed at least partially in a respective cylindrical outlet housing.
- the turbomolecular vacuum pumps comprise a respective pump body having a respective coaxial annular flange in which a first and a second coaxial series of through holes are provided, said first series of through holes cooperating with said first series of threaded holes and the first screws; respectively attaching the outlet fitting for attaching the pump body of the turbomolecular vacuum pump to the outlet fitting and said second series of through holes cooperating with a second series of threaded holes formed in the housing and the respective second fixing screws of the outlet coupling for fixing the casing of the turbomolecular vacuum pump to the outlet connection, the connection made by the first fixing screws between the coaxial annular flange and the adapter is stronger that the connection made by the second fixing screws between said coaxial annular flange and the housing,
- a respective annular clearance is formed in the bottom of the cylindrical outlet housing, between said cylindrical housings and the periphery of the first end of the casing of turbomolecular vacuum pumps,
- turbomolecular vacuum pumps respectively comprise a turbomolecular stage and a molecular stage and the cylindrical outlet housings are configured to accommodate at least the turbomolecular stage of the turbomolecular vacuum pumps,
- the pumping device comprises at least two first outlet seals intended to be interposed between the respective bottom of a cylindrical outlet housing and a first end of the casing of the respective turbomolecular vacuum pump,
- the pumping device comprises at least two second outlet seals intended to be interposed between the coaxial annular flange of the pump body and a second end of the casing of the respective turbomolecular vacuum pump.
- the pumping device thus makes it possible to associate the individual pumping capacities of the turbomolecular vacuum pumps to obtain a higher resulting pumping capacity.
- the coaxial annular flange of the present invention is arranged lower on the turbomolecular vacuum pump, at least a portion of the housing being housed in the adapter.
- connection between the turbomolecular vacuum pump and the adapter is relocated further than around the suction port of the turbomolecular vacuum pump. It is then possible to bring together the various suction orifices of the respective turbomolecular vacuum pumps and to bring them closer to the outlet orifice of the chamber. This limits the thickness of the adapter, which reduces the loss of load of the adapter. In addition, the bringing together of turbomolecular vacuum pumps improves the homogeneity of the pumping at the inlet annular flange.
- the delocalized connection of the turbomolecular vacuum pump makes it possible to provide an annular clearance in the block of the adapter, coaxial with the cylindrical outlet housing, between the cylindrical outlet housings and the periphery of the suction port of the turbomolecular vacuum pumps.
- This annular clearance allows to leave a free space to the housing to deform in case of crash of the turbomolecular vacuum pump without transmitting too much effort to the adapter, and therefore to the enclosure.
- Another advantage is that, by deporting the lower coaxial annular flange, fixing screws can be used for the connection between the coaxial annular flange and the adapter, the dimensioning of which is optimized.
- the fastening screws can be implemented on a larger diameter than that of the state of the art, which makes it possible to reduce the stress experienced by the fastening screws during a crash.
- the geometry of the adapter thus optimizes the positioning of turbomolecular vacuum pumps closer to the enclosure, thus minimizing head losses and dead zones.
- the resulting pumping speed is thus only 8% lower than the theoretical pumping rate.
- Positioning closer to the enclosure also reduces the size of the pumping device.
- a very good homogeneity of the pump speeds is thus obtained at the passage section of the annular inlet flange of the adapter, to obtain a good homogeneity of pumping in the enclosure, particularly at the of the substrate in the case of a process chamber enclosure.
- a maximum pumping speed can be obtained at the outlet orifice of the enclosure, which makes best use of the opening available at the speaker output.
- FIG. 1 represents a perspective view from above of a pumping device according to a first embodiment
- FIG. 2 represents a view in perspective and from below of the pumping device of FIG. 1,
- FIG. 3 is a perspective view in cross-section of the pumping device of FIGS. 1 and 2,
- FIG. 4 is a diagrammatic cross-sectional view of the adapter of the pumping device of FIGS. 1 to 3,
- FIG. 5 represents a simulation result of the gas flow in a geometry representing a partial sectional view of another example of an adapter and on which are represented the amplitudes and the vectors of the gas velocities pumped in m / s,
- FIG. 6a is a schematic view showing an exemplary arrangement of two turbomolecular vacuum pumps in an outlet connection
- FIG. 6b is a schematic view showing an example of an arrangement of three turbomolecular vacuum pumps in an outlet connection
- FIG. Fig. 6c is a schematic view showing an example of arrangement of four turbomolecular vacuum pumps in an outlet connection
- Fig. 6d is a schematic view showing an example of an arrangement of five turbomolecular vacuum pumps in an outlet connection
- FIG. 7 represents a perspective view of a pumping device according to a second embodiment.
- FIGS 1 to 4 illustrate a first embodiment of a pumping device
- the pumping device 1 comprises an adapter for vacuum pumps 2 and at least two turbomolecular vacuum pumps 3, three in the example illustrated.
- the turbomolecular vacuum pumps 3 are identical and comprise respectively in a manner known per se, a fixed part in which rotates a rotor 5 in axial rotation along the axis of rotation I (see the sectional view of FIG. 3). .
- the turbomolecular vacuum pumps 3 comprise respectively a turbomolecular stage 13 and a molecular stage 14.
- the fixed part comprises a casing 4 comprising a suction orifice 6 coaxial with the axis of rotation I at a first end, and through which the pumped gases 7 penetrate.
- the rotor 5 consists of an upstream portion (in the direction of the gas flow) of turbo-type rotor rotor at the turbomolecular stage 13 adapted to rotate in the casing 4 and a downstream section (in the gas flow direction) of HOLWEC type skirt-shaped rotor in the molecular stage 14.
- the rotor 5 is rotated in the fixed part by an internal motor 10, and is guided laterally by magnetic or mechanical bearings 11 and 12.
- the pumped gases 7 are then discharged through a delivery port 8 of the vacuum pump ( arrow 9).
- the adapter 2 is intended to connect and connect the three turbomolecular vacuum pumps 3 to the wall of an enclosure in which a controlled vacuum can be created, such as a chamber for semiconductor manufacturing processes (not shown). .
- the adapter 2 comprises an annular inlet flange 15 and an outlet connector 16 connected by a portion 17 of the adapter 2 for example frustoconical.
- the frustoconical portion 17 makes it possible to widen the diameter of the outlet fitting 16 with respect to the diameter of the annular inlet flange 15 to accommodate several turbomolecular vacuum pumps. 3 with a shape limiting the dead zones over a relatively short distance (the frustoconical portion has a thickness of the order of 65 mm in this example with an angle of the order of 45 °).
- the annular inlet flange 15 is intended to be connected to the wall of the enclosure, around an outlet orifice of the enclosure.
- the annular inlet flange 15 is coaxial with the outlet orifice of the enclosure (axis A in FIG. 3) and has a tabular shape whose internal diameter corresponds to the diameter of the outlet orifice of the enclosure ( 450 mm in the example).
- the pumping device 1 further comprises an inlet seal placed in a groove 18 formed in the annular inlet flange 15, the inlet seal being intended to be interposed between the annular flange of 15 and the wall of the enclosure, around the outlet of the enclosure to seal the connection of the enclosure to the adapter 2.
- the pumping device comprises a ring holder inlet seal around which the inlet annular seal 15 is received.
- the inlet seal ring is adapted to cooperate with the inner edge of the inlet annular flange and the edge of the outlet orifice between which it is interposed, to maintain and center the annular inlet seal 15 .
- threaded holes are provided in the wall of the enclosure, distributed around the outlet orifice, while through holes 19 are provided on the annular inlet flange 15 of the adapter 2, and fixing screws 20, such as head screws, are adapted so that their rods pass through the through holes 19 and screw into the associated tapped holes to secure the adapter 2 to the enclosure by pressing the annular flange of 15 against the wall of the enclosure.
- the outlet fitting 16 comprises at least two cylindrical outlet housings 21 (FIG. 4), three in this example: one for each turbomolecular vacuum pump 3.
- the cylindrical housings 21 are through, thereby forming a plurality of bypass outlets in the outlet fitting 16 for the pumped gases. These cylindrical outlet housings 21 form an at least partial pump body for the casing 4 of the turbomolecular vacuum pump 3 respectively. They are coaxial with the axis of rotation I of turbomolecular vacuum pumps 3.
- the cylindrical housings 21 are for example bores formed in an adapter 2 monobloc for example of aluminum material.
- the through-cylindrical housings 21 have a thickness corresponding to the total length of the casing 4 of the turbomolecular stage 13 (of the order of 138 mm in this example), for accommodating the turbomolecular stage 13 of turbomolecular vacuum pumps 3.
- the cylindrical housings 21 have a substantially identical volume to receive three same turbomolecular vacuum pumps. Since the through-through cylindrical outlet housings 21 are arranged in bypass in the outlet fitting 16, the individual pumping capacities of the three turbomolecular vacuum pumps 3 combine to obtain a higher resulting pumping capacity.
- cylindrical housings 21 are arranged substantially symmetrically in the outlet fitting 16.
- the internal diameter of the base of the frustoconical portion 17 is substantially equal to the diameter of the circle in which the projections of the diameters of the suction orifices 6 of the turbomolecular vacuum pumps 3 are inscribed.
- FIGS. 1 to 4 illustrate a pumping device 1 comprising three vacuum pumps 3, other embodiments are possible, incorporating two, three, four or five turbomolecular vacuum pumps 3.
- FIGS. 6a, 6b, 6c and 6d schematically illustrate examples of symmetrical arrangement of the outlet housings 21, for which the outlet connector 16 has a generally cylindrical shape, coaxial with the annular inlet flange 15 and for which the axes of the cylindrical output housing 21 are parallel, the suction ports 6 of turbomolecular vacuum pumps 3 being substantially in the same plane, parallel to the plane containing the inlet port of the enclosure.
- the internal diameter of the base of the frustoconical portion 17 is substantially equal to the diameter of the circle C in which the diameters of the suction orifices 6 of the turbomolecular vacuum pumps 3 are inscribed.
- the axes of the cylindrical outlet housing 19 are inclined relative to the axis of the annular inlet flange 15.
- the outlet connector 16 comprises a central dome 22, salient between said cylindrical housings 21.
- the inventors have found that by placing a central dome 22 in the outlet fitting 16, a central dead zone is eliminated in which the pumping speeds are slowed down and could cause either the formation of a local deposit, or reactions between different gases that would not be properly evacuated.
- the central dome 22 has for example a generally bell-shaped shape, the base diameter of which is tangent to the diameters of the suction orifices 6 of the turbomolecular vacuum pumps 3.
- the adapter 2 ' in place of the central dome, the adapter 2 'comprises a central tubular passage 23, coaxial with the annular inlet flange 15, and passing through the adapter 2' from one side to the other at the center of the outlet fitting 16 'and between said cylindrical housings 21.
- the central tubular passage 22 makes it possible, just like the central dome 21, to eliminate a central dead zone in which the pumping speeds were slowed down.
- the diameter of the central tubular passage 22 is tangent to the diameters of the suction orifices 6 of the turbomolecular vacuum pumps 3.
- this central tubular passage 22 is particularly useful. in the case of a process chamber chamber to allow the passage of servitudes (heating / cooling means, electrodes, nitrogen ...) which are used for the operation of the substrate holder located in the chamber, for example substantially in line with the outlet of the enclosure.
- each cylindrical outlet housing 21 has an annular internal abutment 24, in the bottom of the housing 21, against which the first end of the casing 4 of the turbomolecular vacuum pump 3 (suction side) abuts.
- the turbomolecular vacuum pumps 3 further comprise a respective pump body housing the molecular stage 14.
- the pump bodies 25 comprise a coaxial annular flange 27 to the axis of rotation I of the rotor 5, in which first and second coaxial series of through holes are provided.
- the second set of through holes is internal to the first set.
- the annular coaxial flange 27 is disposed substantially at the height of the interface between the turbomolecular stage 13 and the molecular stage 14, to be connected to the cylindrical outlet housing 21 of the adapter 2.
- the coaxial annular flange 27 is arranged lower on the turbomolecular vacuum pump 3, after the molecular stage, at the pump body 25, the turbomolecular stage 13 being housed in the adapter 2.
- the outlet connector 16 comprises a first series of tapped holes (first three series in the example), respectively arranged around the outer openings 28 of the cylindrical outlet housing 21.
- the adapter 2 also comprises first and second fixing screws 29a,
- the first fixing screws 29a are adapted so that their rods pass through the first series of through holes of the coaxial annular flange 27 of the turbomolecular vacuum pumps 3 and are screwed into the first series of associated threaded holes of the outlet fitting 16 to join together the pump body 25 of the turbomolecular vacuum pumps 3 to the adapter 2 by pressing the coaxial annular flanges 27 against the wall of the outlet fitting 16.
- the second fixing screws 29b are adapted so that their rods pass through the second series of through holes of the coaxial annular flange 27 of the turbomolecular vacuum pumps 3 and are screwed into the second series of associated threaded holes formed in the second end of the casing. 4 at the respective outer opening 28 of the cylindrical housings 21 for securing the pump body 25 to the casing 4.
- first fixing screws 29a are sized to withstand a crash of the turbomolecular vacuum pump 3.
- the first fixing screws 29a have a larger diameter than the diameter of the head screws of the state of the art, to avoid their shear in case of crash.
- first fastening screws 29a are implemented on a larger diameter than that of the state of the art, such as 335 mm instead of 310 mm, that is to say that the diameter of the annular flange coaxial 27 has a diameter greater than that of the standard connection flange of the state of the art, which reduces the stress experienced by these fixing screws 29a during a crash.
- the first fixing screws 29a are thus dimensioned so that the connection between the coaxial annular flange 27 and the adapter 2 is stronger than the connection made by the second fixing screws 29b between said coaxial annular flange 27 and the casing 4.
- the pumping device 1 further comprises at least two first outlet seals 30 (three in the illustration) and at least two second outlet seals 31 (three in the illustration).
- Each first outlet seal 30 is interposed between the annular internal abutment 24 of the cylindrical outlet housings 21 and the first end of the casing 4 of the turbomolecular vacuum pumps 3 in a groove formed in the casing 4 (or the cylindrical housing of output 21), for sealing the connection of the turbomolecular vacuum pumps 3 to the adapter 2 around the suction port 6 of the pumps 3.
- the pumping device comprises an outlet seal ring around which the annular seal outlet 30 is received.
- the outlet seal ring is adapted to cooperate with the first end of the casing 4 and the inner edge of the cylindrical outlet housing 21 between which it is interposed to maintain and center the annular outlet seal 30.
- the second outlet seals 31 are interposed between the coaxial annular flange 27 of the pump body 25 and the second end of the casing 4 at the respective outer opening 28 of the cylindrical outlet housings 21.
- annular clearance 32 coaxial with the cylindrical outlet housing 21, is provided between the annular internal abutment 24 of the cylindrical housings 21 and the periphery of the first end of the casing 4 of the turbomolecular vacuum pumps 3.
- the annular clearance 32 has, for example, an radial thickness between 3 and 10 mm over an axial length of between 25 and 40 mm.
- the first outlet seals 30 interposed between the cylindrical housings 21 and the first ends of the housings 4 make it possible to prevent the entry of the pumped gases into the annular clearance 32 and thus the formation of deposits in this space.
- the turbomolecular vacuum pumps 3 are integral with the adapter 2, partially recessed, and sealingly connected to the enclosure.
- the lower positioning of the coaxial annular flange 27 makes it possible to bring the different suction orifices 6 of the respective turbomolecular vacuum pumps 3 closer together and to bring them closer to the outlet orifice of the enclosure.
- the limitation of the thickness of the adapter 2 makes it possible to reduce the pressure drop due to the adapter 2.
- the bringing together of the suction orifices 6 of the turbomolecular vacuum pumps 3 improves the homogeneity of the pumping at the flange. annular input.
- FIG. 5 represents a simulation of the flow of gas in a geometry representing an adapter like that of the preceding figures but without a central dome.
- the pumping speeds are substantially inhomogeneous at the suction ports 6 of the turbomolecular vacuum pumps 3: the speeds fluctuate from one to two times, a very good homogeneity of the pumping speeds is obtained at the passage section of the inlet annular flange 15 of the adapter 2 "'(of the order of 25 m / s everywhere). presenting a central dome, a dead zone (where the velocity of the gases is zero) is visualized between the suction orifices 6.
- a good homogeneity of pumping can thus be obtained in the enclosure, in particular at the level of the substrate in the case of a chamber of the process chamber.
- a maximum homogeneous pumping speed can be obtained at the outlet orifice, which makes it possible to make the most of the opening available at the outlet of the enclosure.
- the optimized geometry of the adapter 2 thus positions the turbomolecular vacuum pumps 3 closer to the chamber, with optimized conductance, thus minimizing the pressure drops and the dead zones.
- the resulting pumping speed is thus only 8% lower than the theoretical pumping rate.
- the positioning closer to the enclosure also allows the size of the pumping device 1 is reduced.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Non-Positive Displacement Air Blowers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1104110A FR2984972A1 (fr) | 2011-12-26 | 2011-12-26 | Adaptateur pour pompes a vide et dispositif de pompage associe |
| PCT/EP2012/076330 WO2013098178A1 (fr) | 2011-12-26 | 2012-12-20 | Adaptateur pour pompes a vide et dispositif de pompage associe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2798223A1 true EP2798223A1 (fr) | 2014-11-05 |
| EP2798223B1 EP2798223B1 (fr) | 2018-12-05 |
Family
ID=47603541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12818501.4A Active EP2798223B1 (fr) | 2011-12-26 | 2012-12-20 | Adaptateur pour pompes à vide et dispositif de pompage associé |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9970444B2 (fr) |
| EP (1) | EP2798223B1 (fr) |
| JP (1) | JP6174599B2 (fr) |
| KR (1) | KR101997308B1 (fr) |
| CN (1) | CN104024645B (fr) |
| FR (1) | FR2984972A1 (fr) |
| WO (1) | WO2013098178A1 (fr) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120195749A1 (en) | 2004-03-15 | 2012-08-02 | Airius Ip Holdings, Llc | Columnar air moving devices, systems and methods |
| USD698916S1 (en) | 2012-05-15 | 2014-02-04 | Airius Ip Holdings, Llc | Air moving device |
| CA2875347C (fr) | 2013-12-19 | 2022-04-19 | Airius Ip Holdings, Llc | Dispositifs, systemes et procedes de deplacement d'air en colonne |
| CA2875339A1 (fr) | 2013-12-19 | 2015-06-19 | Airius Ip Holdings, Llc | Dispositifs, systemes et procedes de deplacement d'air en colonne |
| US10221861B2 (en) | 2014-06-06 | 2019-03-05 | Airius Ip Holdings Llc | Columnar air moving devices, systems and methods |
| GB2538962B (en) * | 2015-06-01 | 2019-06-26 | Edwards Ltd | Vacuum pump |
| US10487852B2 (en) | 2016-06-24 | 2019-11-26 | Airius Ip Holdings, Llc | Air moving device |
| USD886275S1 (en) | 2017-01-26 | 2020-06-02 | Airius Ip Holdings, Llc | Air moving device |
| US10559451B2 (en) * | 2017-02-15 | 2020-02-11 | Applied Materials, Inc. | Apparatus with concentric pumping for multiple pressure regimes |
| US10704715B2 (en) * | 2017-05-29 | 2020-07-07 | Shimadzu Corporation | Vacuum pumping device, vacuum pump, and vacuum valve |
| USD885550S1 (en) | 2017-07-31 | 2020-05-26 | Airius Ip Holdings, Llc | Air moving device |
| USD887541S1 (en) | 2019-03-21 | 2020-06-16 | Airius Ip Holdings, Llc | Air moving device |
| AU2020257205B2 (en) | 2019-04-17 | 2026-01-08 | Airius Ip Holdings, Llc | Air moving device with bypass intake |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4732529A (en) * | 1984-02-29 | 1988-03-22 | Shimadzu Corporation | Turbomolecular pump |
| JPH05195957A (ja) * | 1992-01-23 | 1993-08-06 | Matsushita Electric Ind Co Ltd | 真空ポンプ |
| DE19821634A1 (de) * | 1998-05-14 | 1999-11-18 | Leybold Vakuum Gmbh | Reibungsvakuumpumpe mit Stator und Rotor |
| JP4520636B2 (ja) * | 1998-05-26 | 2010-08-11 | ライボルト ヴァークウム ゲゼルシャフト ミット ベシュレンクテル ハフツング | シャシ、ロータ及びケーシングを有する摩擦真空ポンプ並びにこの形式の摩擦真空ポンプを備えた装置 |
| JP2001241393A (ja) * | 1999-12-21 | 2001-09-07 | Seiko Seiki Co Ltd | 真空ポンプ |
| DE10211134C1 (de) * | 2002-03-14 | 2003-08-14 | Schwerionenforsch Gmbh | Turbomolekularpumpe mit koaxial zentralem Durchgang |
| US7278831B2 (en) * | 2003-12-31 | 2007-10-09 | The Boc Group, Inc. | Apparatus and method for control, pumping and abatement for vacuum process chambers |
| DE102004038677B4 (de) * | 2004-08-10 | 2016-11-24 | Pfeiffer Vacuum Gmbh | Vakuumpumpe |
| DE102005006433A1 (de) * | 2005-02-12 | 2006-08-24 | Leybold Vacuum Gmbh | Anordnung mehrerer schnelldrehender Vakuumpumpen |
| GB0505500D0 (en) * | 2005-03-17 | 2005-04-27 | Boc Group Plc | Vacuum pumping arrangement |
| KR100655293B1 (ko) * | 2005-11-23 | 2006-12-08 | 대우조선해양 주식회사 | 장거리 기류이송용 축류식 터보 제트팬 |
| JP2009174604A (ja) * | 2008-01-23 | 2009-08-06 | Jeol Ltd | 除振機構 |
-
2011
- 2011-12-26 FR FR1104110A patent/FR2984972A1/fr active Pending
-
2012
- 2012-12-20 JP JP2014549435A patent/JP6174599B2/ja active Active
- 2012-12-20 KR KR1020147020023A patent/KR101997308B1/ko active Active
- 2012-12-20 CN CN201280064599.4A patent/CN104024645B/zh active Active
- 2012-12-20 EP EP12818501.4A patent/EP2798223B1/fr active Active
- 2012-12-20 WO PCT/EP2012/076330 patent/WO2013098178A1/fr not_active Ceased
- 2012-12-20 US US14/367,131 patent/US9970444B2/en active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2013098178A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013098178A1 (fr) | 2013-07-04 |
| JP6174599B2 (ja) | 2017-08-02 |
| JP2015503697A (ja) | 2015-02-02 |
| US20140348634A1 (en) | 2014-11-27 |
| KR20140119032A (ko) | 2014-10-08 |
| EP2798223B1 (fr) | 2018-12-05 |
| FR2984972A1 (fr) | 2013-06-28 |
| CN104024645B (zh) | 2016-09-07 |
| CN104024645A (zh) | 2014-09-03 |
| KR101997308B1 (ko) | 2019-10-01 |
| US9970444B2 (en) | 2018-05-15 |
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