WO2015029536A1 - 真空ポンプ - Google Patents
真空ポンプ Download PDFInfo
- Publication number
- WO2015029536A1 WO2015029536A1 PCT/JP2014/065153 JP2014065153W WO2015029536A1 WO 2015029536 A1 WO2015029536 A1 WO 2015029536A1 JP 2014065153 W JP2014065153 W JP 2014065153W WO 2015029536 A1 WO2015029536 A1 WO 2015029536A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wiring board
- printed wiring
- flexible printed
- control unit
- connector
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
- F04D17/168—Pumps specially adapted to produce a vacuum
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- 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
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- 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
- F04D19/048—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps comprising magnetic bearings
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- 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
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0693—Details or arrangements of the wiring
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0444—Details of devices to control the actuation of the electromagnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/44—Centrifugal pumps
- F16C2360/45—Turbo-molecular pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
- F16C32/0489—Active magnetic bearings for rotary movement with active support of five degrees of freedom, e.g. two radial magnetic bearings combined with an axial bearing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/50—Fixed connections
- H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
- H01R12/592—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures connections to contact elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
- H02K2211/03—Machines characterised by circuit boards, e.g. pcb
Definitions
- the present invention relates to a vacuum pump, and more particularly to a vacuum pump that can be used in a pressure range from a medium vacuum to an ultrahigh vacuum in a semiconductor manufacturing apparatus, an industrial vacuum apparatus of high energy physics, or the like.
- a pump main body and a control unit for controlling the driving of the pump main body by inputting and outputting electric power and control signals to the pump main body are provided.
- the input / output of the electric power and control signal between a pump main body and a control unit uses the wire cable which coat
- the number of the wire cables is about 40 or more, and a lot of space is occupied in the vacuum pump.
- wire cables are high, which causes cost increases.
- wire cable is flexible, there is a problem that a large force is required to simultaneously bend a wire cable in which a plurality of wires are bundled, resulting in poor workability.
- the invention according to claim 1 includes a pump body having a rotating body and a control unit for driving and controlling the pump body, and the pump body.
- the vacuum pump formed by connecting the electrical connection inside, the electrical connection inside the control unit, or the electrical connection between the pump main body and the control unit with a cable, at least a part of the cable is insulated in the form of a sheet
- a vacuum pump formed of a flexible printed wiring board in which a wiring pattern is provided on the surface of a conductive substrate.
- the flexible printed wiring board is used for at least part of the cable for electrical connection in the pump body, electrical connection in the control unit, or electrical connection between the pump body and the control unit.
- the space occupied by the cable becomes smaller and lighter.
- the flexible printed wiring board can be easily bent and easily routed to the required position.
- a second aspect of the present invention provides the vacuum pump according to the first aspect, wherein the control unit is attached to the pump body.
- the pump body and the control unit are integrated, so that the size can be reduced.
- a third aspect of the present invention provides the vacuum pump according to the first or second aspect, wherein the flexible printed wiring board includes a connector attached to at least one end side.
- the electrical connection in the pump body, the electrical connection in the control unit, or the electrical connection between the pump body and the control unit can be easily performed via the flexible printed wiring board and the connector.
- a fourth aspect of the present invention provides the vacuum pump according to the third aspect, wherein the connector has a plurality of pins for connection to the flexible printed wiring board.
- the terminal of the flexible printed wiring board and the pin of the connector can be easily electrically connected by inserting the pin of the connector into the hole of the flexible printed wiring board.
- the plurality of pins are disposed at symmetrical positions with respect to the extending direction center of the flexible printed wiring board, and the connector is the flexible printed circuit.
- a vacuum pump provided with an instruction means for instructing a direction in which a wiring board is attached.
- the flexible printed wiring board when the flexible printed wiring board is attached to the connector in accordance with the instruction of the instruction means provided on the connector, the flexible printed wiring board can be attached without making a mistake in the direction.
- the flexible printed wiring board surrounds the plurality of holes and the plurality of holes, respectively, and each of the wirings is the wiring.
- a vacuum pump having a plurality of terminals connected to a pattern is provided.
- the terminal of the flexible printed wiring board and the pin of the connector can be easily electrically connected by inserting the pin of the connector into the hole of the flexible printed wiring board.
- a seventh aspect of the present invention is the configuration according to the first, second, third, fourth, fifth or sixth aspect, wherein the flexible printed wiring board is provided with an instruction means for instructing a direction in which the flexible printed wiring board is attached.
- a vacuum pump is provided.
- the flexible printed wiring board when the flexible printed wiring board is attached to the connector in accordance with the instruction of the instruction means provided on the flexible printed wiring board, the flexible printed wiring board can be attached without making a mistake.
- the invention according to claim 1 uses a flexible printed wiring board for at least a part of a cable for electrical connection in the pump body, electrical connection in the control unit, or electrical connection between the pump body and the control unit. Since the space and weight occupied by the cable can be reduced, the size and weight can be reduced. In addition, the amount of material used can be reduced, and the cable can be easily routed to a position where it is necessary, so that workability is improved and cost reduction can be expected. *
- the invention according to claim 3 can easily perform the electrical connection in the pump body, the electrical connection in the control unit, or the electrical connection between the body and the control unit via the flexible printed wiring board and the connector.
- workability is further improved, and cost reduction can be further expected.
- the invention according to the fourth aspect is the invention according to the third aspect.
- workability is further improved, and cost reduction can be further expected.
- the flexible printed wiring board when the flexible printed wiring board is attached to the connector according to the instruction of the instruction means provided on the connector, the flexible printed wiring board can be attached without making a mistake.
- further improvements in workability and reliability can be expected.
- the terminal of the flexible printed wiring board and the pin of the connector can be easily electrically connected by inserting the connector pin into the hole of the flexible printed wiring board.
- the flexible printed wiring board when the flexible printed wiring board is attached to the connector in accordance with the instructions of the instruction means provided on the flexible printed wiring board, the flexible printed wiring board can be attached without making a mistake.
- the effects of the invention described in 2, 3, 4, 5 or 6 further improvement in workability and reliability can be expected.
- a sectional view of a vacuum pump concerning one embodiment of the present invention.
- Sectional drawing of a vacuum pump same as the above showing in the state which removed the control unit from the pump main body. It is a figure which shows the cable in a vacuum pump same as the above in the state which attached the connector to the flexible printed wiring board, (a) is the top view, (b) is the side view. It is a figure which shows the flexible printed wiring board single-piece
- the present invention provides a system between a pump body having a rotating body and a control unit that drives and controls the pump body.
- a pump body having a rotating body and a control unit that drives and controls the pump body.
- FIG. 1 is a sectional view showing a state in which a control unit is attached to the pump body
- FIG. 2 is a sectional view showing a state in which the control unit is removed from the pump body. It is. *
- the vacuum pump 10 includes a pump body 11 that performs evacuation and a control unit 12 that drives and controls the pump body 11.
- the control unit 12 is detachably attached to the lower surface of the pump body 11. Yes. Further, the control unit 12 and the pump body 11 are electrically connected via cables 13 and 14 to be described later, and power and control signals can be input / output via the cables 13 and 14. ing. *
- the pump body 11 has an intake port 15 formed at the upper end of a cylindrical outer cylinder 17. Inside the outer cylinder 17, there are provided a rotating body 19 in which a plurality of rotary blades 18 for sucking and exhausting gas are formed radially and in multiple stages around the periphery.
- a rotor shaft 20 is attached to the center of the rotator 19, and the rotor shaft 20 is levitated and supported in the air and controlled in position by, for example, a 5-axis control magnetic bearing.
- the upper radial electromagnet 21 has four electromagnets arranged in pairs on the X axis and the Y axis. Further, four upper radial sensors 22 are provided in close proximity to and corresponding to the upper radial electromagnet 21.
- the upper radial sensor 22 is configured to detect a radial displacement of the rotating body 19 and send a signal to the control circuit 23 in the control unit 12 via the cables 13 and 14. *
- the excitation of the upper radial electromagnet 21 is controlled by the output of the control circuit 23 having a PID adjustment function based on the displacement signal detected by the upper radial sensor 22, and the upper diameter of the rotor shaft 20 is controlled.
- the direction position is adjusted.
- the control circuit 23 The analog sensor signal of the displacement of the rotor shaft 20 detected by the upper radial sensor 22 is converted into a digital signal by an A / D converter, the signal is processed, and the current passed through the upper radial electromagnet 21 is adjusted to adjust the rotor shaft 20. Has emerged.
- the current passed through the upper radial electromagnet 21 is measured and fed back to the control circuit 23.
- the rotor shaft 20 is formed of a high magnetic permeability material (for example, iron) or the like, and is attracted by the magnetic force of the upper radial electromagnet 21. Such adjustment is performed independently in the X-axis direction and the Y-axis direction.
- the lower radial electromagnet 24 and the lower radial sensor 25 are arranged in the same manner as the upper radial electromagnet 24 and the upper radial sensor 22, and the lower radial position of the rotor shaft 20 is set to the upper side. Similar to the radial position, it is adjusted in the control unit 12. *
- the axial electromagnets 26 ⁇ / b> A and 26 ⁇ / b> B are arranged with a disk-shaped metal disk 27 provided at the lower part of the rotor shaft 20 interposed therebetween.
- the metal disk 27 is made of a high permeability material such as iron.
- an axial sensor 28 is provided facing the shaft end surface of the rotor shaft 20, and the axial displacement signal is sent to the control circuit 23.
- the axial electromagnets 26A and 26B are controlled to be excited by the output of the amplifier via the control circuit 23 having the PID adjustment function of the control unit 12 based on the axial displacement signal.
- the axial electromagnet 26A attracts the metal disk 27 upward by magnetic force, and the axial electromagnet 26B attracts the metal disk 27 downward.
- the magnetic force exerted on the metal disk 27 by the axial electromagnets 26A and 26B is appropriately adjusted, and the rotor shaft 20 is magnetically levitated in the axial direction in the pump main body 11 so that it is not in contact with the space. It comes to hold.
- the motor 29 includes a plurality of magnetic poles arranged circumferentially so as to surround the rotor shaft 20. These magnetic poles are controlled to rotate the motor 29 by a power signal output from a drive circuit via a motor control circuit having a PWM control function of the control unit 12.
- the motor 29 is provided with a rotation speed sensor and a motor temperature sensor (not shown). Upon receiving detection signals from the rotation speed sensor and the motor temperature sensor, the control shaft 23 in the control unit 12 receives the rotor shaft 20. Is controlled. *
- a plurality of fixed blades 30, 30... are arranged with a small gap from the rotary blades 18, 18..
- the rotor blades 18, 18... are each inclined by a predetermined angle from a plane perpendicular to the axis of the rotor shaft 20 in order to transfer exhaust gas molecules downward by collision.
- the fixed blades 30, 30... are also inclined at a predetermined angle from a plane perpendicular to the axis of the rotor shaft 20, and are arranged at the stage of the rotary blade 18 toward the inside of the outer cylinder 17. They are arranged alternately.
- One end of the fixed wing 30 is supported in a state of being inserted between a plurality of stacked fixed wing spacers 31, 31. *
- the fixed blade spacer 31 is a ring-shaped member, and is made of, for example, a metal such as aluminum, iron, stainless steel, copper, or an alloy containing these metals as components.
- the outer cylinder 17 is fixed to the outer periphery of the fixed blade spacer 31 with a slight gap.
- a base portion 32 is disposed at the bottom of the outer cylinder 17, and a threaded spacer 33 is disposed between the lower portion of the fixed blade spacer 31 and the base portion 32.
- An exhaust port 34 is formed below the threaded spacer 33 in the base portion 32 and communicates with the outside. *
- the threaded spacer 33 is a cylindrical member made of a metal such as aluminum, copper, stainless steel, iron, or an alloy containing these metals as a component. A plurality of thread grooves are engraved. The direction of the spiral of the screw groove is a direction in which molecules of the exhaust gas move toward the exhaust port 34 when the molecules of the exhaust gas move in the rotation direction of the rotating body 19. *
- a rotating blade 118 is suspended from the lowermost portion of the rotating body 19 following the rotating blades 18, 18,.
- the outer peripheral surface of the rotor blade 118 is cylindrical and projects toward the inner peripheral surface of the threaded spacer 33, and is adjacent to the inner peripheral surface of the threaded spacer 33 with a predetermined gap. ing. *
- the base portion 32 is a disk-like member that constitutes the base portion of the pump body 11, and is generally made of a metal such as iron, aluminum, or stainless steel. *
- the base portion 32 physically holds the pump body 11 and also has a function of a heat conduction path, a metal having rigidity such as iron, aluminum or copper and high heat conductivity is used. Is desirable. *
- the control unit 12 is detachably attached with bolts or the like in a coaxial state with the pump shaft center. It is compactly assembled and downsized. In this attachment, the sealing material 35 is disposed between the base portion 32 and the control unit 12 so that the inside of the pump body 11 can be maintained in a vacuum state.
- the cable 13 on the pump body 11 side and the cable 14 on the control unit 12 side are each composed of a wiring board 41 and a connector 42 attached to one end of the flexible printed wiring board 41.
- the other end of the flexible printed wiring board 41 on the pump body 11 side is attached to a terminal block (not shown) of the pump body 11, and the other end of the flexible printed wiring board 41 on the control unit 12 side is connected to the circuit board of the control circuit 23.
- the basic structure is the same except that the connector 42 on the pump body 11 side is a male terminal and the connector 42 on the control unit 12 side is a female terminal, and is detachable from each other. Therefore, the structure of the cables 13 and 14 will be described with reference to FIGS. 3 to 5 as a representative of the cable 13 on the pump body 11 side. *
- the cable 13 includes a connector 42 attached to one end of a flexible printed wiring board 41.
- the connector 42 includes a cylindrical connector main body 44 that is integrally provided with a mounting flange portion 43 on the outer periphery, and an axial line in the connector main body 44.
- a cylindrical connector main body 44 that is integrally provided with a mounting flange portion 43 on the outer periphery, and an axial line in the connector main body 44.
- the plurality of contact pins 45, 45... are regularly arranged in a symmetrical manner with a center line O extending in the extending direction of the flexible printed wiring board 41 interposed therebetween.
- the flexible printed wiring board 41 is formed of a plurality of electric circuits on a sheet-like insulating base material (for example, a plastic film) having a thickness t (see FIG. 4) of 12 ⁇ m to 50 ⁇ m, such as copper foil having a thickness of about 2 ⁇ m to 50 ⁇ m. 46, 46..., That is, printed wiring patterns. On one end side of each of the electric circuits 46, 46..., Corresponding to the contact pins 45, 45... On the connector 42 side, contact holes 45, 45. A through hole (through hole) 47 formed by the formed terminal is formed.
- the through holes 47 formed on the flexible printed wiring board 41 are arranged in a regularly aligned state symmetrically with respect to the center line O extending in the extending direction of the flexible printed wiring board 41. .
- the number of electrical circuits 46, 46... Is not all the same as the number of contact pins 45, 45...
- the sheet portion of the portion that does not require connection with the control unit 12 side is cut (for example, a portion indicated by reference numeral 48) so as not to hinder the connection.
- 21 contact pins 45, 45... Are connected to through holes 47, 47. *
- the cable 13 configured as described above is configured such that the contact pins 45, 47... On the flexible printed wiring board 41 side correspond to the contact pins 45, 45. 45 are inserted and engaged in the through holes 47, 47. Thereafter, when the contact pins 45, 45... And the through holes 47, 47... Are soldered with a solder dip or the like, the connector 42 and the flexible printed wiring board 41 are electrically fixed and connected. *
- the flexible printed wiring board 41 Since the flexible printed wiring board 41 is freely bent in the cable 13 formed in this way, the flexible printed wiring board 41 is freely routed to a required position, and then between the pump body 11 and the control unit 12. Thus, the connectors 42 and 42 can be mechanically and electrically connected to each other.
- the cable cannot be bent easily and becomes a bundle of large wires. For example, a region 50 indicated by hatching in FIG. 2 is required.
- the flexible printed wiring board 41 is used as in this embodiment, the area 50 is eliminated, and the space and weight occupied by the cable 13 are reduced, thereby enabling a reduction in size and weight. *
- the control circuit 23 depends on the terminal block of the pump body when the upper and lower surfaces of the flexible printed wiring board 41 are reversed and connected in the opposite direction.
- the signals from the upper radial sensor 22 and the lower radial sensor 25 that are respectively input to the reverse are reversed, which may cause a problem. Therefore, in this embodiment, as indicated by reference numerals in FIG. 3 and FIG. 4, an instruction for instructing the connector 42 to attach the flexible printed wiring board 41 on one surface of the flexible printed wiring board 41 and one surface of the connector 42.
- triangular colored marks 51a and 51b are provided. Therefore, during assembly work, if the flexible printed wiring board 41 is assembled with the surface on which the mark 51a is printed facing up and the mark 51a is abutted against the mark 51b printed on the connector 42, incorrect mounting will occur. I try to prevent it. *
- the indication means is not limited to the triangular colored marks 51a and 51b.
- a mark or a color such as a figure is provided between the flexible printed wiring board 41 and the connector 42, and the flexible printed wiring is applied to the connector 42.
- the direction in which the plate 41 is attached may be instructed.
- the mark of the instruction means is only on the flexible printed wiring board 41 side (mark 51a), only on the connector 42 side (mark 51b), or on both the flexible printed wiring board 41 side (mark 51a) and the connector 42 side (mark 51b). It may be provided.
- the threaded spacer 33 is disposed on the outer periphery of the rotor blade 18 and a thread groove is formed on the inner peripheral surface of the threaded spacer 33.
- a thread groove may be formed on the outer peripheral surface of the rotor blade 18 and a spacer having a cylindrical inner peripheral surface may be disposed around the screw groove.
- the gas sucked from the intake port 15 enters the electrical component side composed of the motor 29, the lower radial electromagnet 24, the lower radial sensor 25, the upper radial electromagnet 21, the upper radial sensor 22, and the like. To prevent this, the pressure is maintained at a predetermined pressure with a purge gas.
- a pipe (not shown) is provided in the base portion 32, and the purge gas is introduced through this pipe.
- the introduced purge gas is sent to the exhaust port 34 through the clearance between the protective bearing 36 and the rotor shaft 20, between the rotor and the stator of the motor 29, and between the stator column 37 and the rotor blade 18.
- control unit 12 is attached to the lower surface of the pump main body 11 (the lower surface of the base portion 32) and integrated with the pump main body 11 is disclosed, but the control unit 12 is controlled to a position different from the pump main body 11.
- a unit 12 may be provided.
- the cable 13 drawn from the pump main body 11 freely draws the flexible printed wiring board 41 in the pump main body 11 as shown in FIG. 6, for example, and a connector 42 attached to the tip of the flexible printed wiring board 41. May be fixed to the side surface of the pump main body 11 and fixed to a cable from a control unit (not shown) via the connector 42. Also in this case, a sealing material 35 (not shown) is disposed between the base portion 32 and the connector 42 so that the inside of the pump body 11 can be maintained in a vacuum state.
- the vacuum pump 10 shown in FIG. 6 is basically different from the configuration of the vacuum pump 10 shown in FIGS. 1 and 2 in that the control unit is provided at another position. Since the configuration is the same, the same members are denoted by the same reference numerals and description thereof is omitted. *
- the flexible printed wiring board only a part of the electrical connection, for example, the signal line of the radial direction, axial direction sensor, rotation speed sensor, etc. of the magnetic bearing with a small current is described as the flexible printed wiring board, but is not limited thereto. All signal lines may be connected by the flexible printed wiring board 41.
- the flexible printed wiring board 41 may be a multi-layer flexible printed wiring board. Thereby, the width
- the number of flexible printed wiring boards is not one, but as shown in FIG. 7, for example, a flexible printed wiring board 41 (A) and a flexible printed wiring board 41 (B) are overlapped and wired so that a plurality of sheets are provided.
- a stacked configuration may be used.
- the flexible printed wiring board 41 (B) is a flexible printed wiring board for electrical connection with a large current such as a motor power line or an excitation current of a magnetic bearing
- the flexible printed wiring board 41 (A) is other than that. It may be configured to be divided into printed wiring boards for electrical connection with a small current. Thereby, it becomes easy to change the thickness of the insulating layer for every wiring board. At that time, by taking measures to change the length of the pin of the vacuum connector, interference with the pin can be avoided.
- the cable used in the present invention can be applied to electrical wiring other than the vacuum pump.
- Vacuum pump 11 Pump body 12
- Control unit 13 Cable 15 Inlet 17
- Outer cylinder 18 Rotor blade 118 Lowermost rotor blade 19
- Rotor 20 Rotor shaft 21
- Upper radial sensor 23 Control circuit 24
- Lower side Radial electromagnet 25 lower radial sensors 26A, 26B, axial electromagnet 27, metal disk 28, axial sensor 29, motor 30, motor 30, fixed blade 31, rotor blade spacer 32, base 33, threaded spacer 34, exhaust port 35, sealing material 36, protective bearing 37, stator column 41, flexible printed wiring board 42, connector 43, flange 44, connector body 45
- Contact pins 46 the electrical circuit (wiring pattern) 47 through hole 48 cut portion 49 insulator 50 regions 51a have been required in the conventional structure, marked as 51b instructing means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Non-Positive Displacement Air Blowers (AREA)
Abstract
Description
上側径方向センサ22が検出したロータ軸20の変位のアナログセンサ信号をA/Dコンバータでデジタル信号に変換し、その信号を処理し、上側径方向電磁石21に流す電流を調整してロータ軸20を浮上させている。
42側(マーク51b)の両方に設けてもよい。
Claims (7)
- 回転体を有するポンプ本体と、該ポンプ本体を駆動制御する制御ユニットと、を備え、前記ポンプ本体内の電気接続、前記制御ユニット内の電気接続、または前記ポンプ本体と前記制御ユニットの間の電気接続をケーブルで接続してなる真空ポンプにおいて、 前記ケーブルの少なくとも一部を、シート状絶縁性基材の表面上に配線パターンを設けてなるフレキシブルプリント配線板で形成したことを特徴とすると真空ポンプ。
- 前記制御ユニットは、前記ポンプ本体に取り付けられていることを特徴とする請求項1に記載の真空ポンプ。
- 前記フレキシブルプリント配線板は、少なくとも一端側に取り付けられたコネクタを備えることを特徴とする請求項1または請求項2に記載の真空ポンプ。
- 前記コネクタは、前記フレキシブルプリント配線板と接続するための複数のピンを有することを特徴とする請求項3に記載の真空ポンプ。
- 前記複数のピンは、前記フレキシブルプリント配線板の延在方向中心を挟んで左右対称な位置に配設され、前記コネクタは前記フレキシブルプリント配線板を取り付ける向きを指示する指示手段を設けてなることを特徴とする請求項4に記載の真空ポンプ。
- 前記フレキシブルプリント配線板は、複数の孔と該複数の孔をそれぞれ囲み、かつ、それぞれが前記配線パターンに接続されてなる複数の端子を有することを特徴とする請求項1、2、3、4または5に記載の真空ポンプ。
- 前記フレキシブルプリント配線板は、前記フレキシブルプリント配線板を取り付ける向きを指示する指示手段を設けてなることを特徴とする請求項1、2、3、4、5または6に記載の真空ポンプ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CN201480043086.4A CN105408634A (zh) | 2013-08-30 | 2014-06-06 | 真空泵 |
EP14841254.7A EP3040561A4 (en) | 2013-08-30 | 2014-06-06 | Vacuum pump |
US14/912,434 US11512705B2 (en) | 2013-08-30 | 2014-06-06 | Vacuum pump |
KR1020157035415A KR102167207B1 (ko) | 2013-08-30 | 2014-06-06 | 진공 펌프 |
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JP2013179431A JP6735526B2 (ja) | 2013-08-30 | 2013-08-30 | 真空ポンプ |
JP2013-179431 | 2013-08-30 |
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WO2015029536A1 true WO2015029536A1 (ja) | 2015-03-05 |
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PCT/JP2014/065153 WO2015029536A1 (ja) | 2013-08-30 | 2014-06-06 | 真空ポンプ |
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US (1) | US11512705B2 (ja) |
EP (1) | EP3040561A4 (ja) |
JP (1) | JP6735526B2 (ja) |
KR (1) | KR102167207B1 (ja) |
CN (1) | CN105408634A (ja) |
WO (1) | WO2015029536A1 (ja) |
Cited By (1)
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WO2018123522A1 (ja) * | 2016-12-28 | 2018-07-05 | エドワーズ株式会社 | 真空ポンプ及び該真空ポンプに適用されるコネクタ、制御装置 |
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JP6753759B2 (ja) | 2016-10-21 | 2020-09-09 | エドワーズ株式会社 | 真空ポンプ及び該真空ポンプに適用される防水構造、制御装置 |
JP7003418B2 (ja) * | 2017-02-17 | 2022-01-20 | 株式会社島津製作所 | 磁気軸受装置および真空ポンプ |
JP7022265B2 (ja) * | 2017-10-25 | 2022-02-18 | 株式会社島津製作所 | 真空ポンプ |
JP7087418B2 (ja) * | 2018-02-02 | 2022-06-21 | 株式会社島津製作所 | 真空ポンプ |
JP7088688B2 (ja) * | 2018-02-16 | 2022-06-21 | エドワーズ株式会社 | 真空ポンプと真空ポンプの制御装置 |
JP7096006B2 (ja) * | 2018-02-16 | 2022-07-05 | エドワーズ株式会社 | 真空ポンプと真空ポンプの制御装置 |
FR3093544B1 (fr) * | 2019-03-05 | 2021-03-12 | Pfeiffer Vacuum | Pompe à vide turbomoléculaire et procédé de purge |
JP7244328B2 (ja) * | 2019-03-28 | 2023-03-22 | エドワーズ株式会社 | 真空ポンプ及び該真空ポンプの制御装置 |
JP7124787B2 (ja) * | 2019-04-17 | 2022-08-24 | 株式会社島津製作所 | 電源一体型真空ポンプ |
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- 2014-06-06 CN CN201480043086.4A patent/CN105408634A/zh active Pending
- 2014-06-06 KR KR1020157035415A patent/KR102167207B1/ko active IP Right Grant
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Also Published As
Publication number | Publication date |
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KR20160048038A (ko) | 2016-05-03 |
US11512705B2 (en) | 2022-11-29 |
EP3040561A4 (en) | 2017-05-03 |
EP3040561A1 (en) | 2016-07-06 |
US20160195098A1 (en) | 2016-07-07 |
KR102167207B1 (ko) | 2020-10-19 |
CN105408634A (zh) | 2016-03-16 |
JP2015048734A (ja) | 2015-03-16 |
JP6735526B2 (ja) | 2020-08-05 |
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