WO2017038274A1 - 管継手、流体制御機器、流体制御装置、及び半導体製造装置、並びに管継手の製造方法 - Google Patents
管継手、流体制御機器、流体制御装置、及び半導体製造装置、並びに管継手の製造方法 Download PDFInfo
- Publication number
- WO2017038274A1 WO2017038274A1 PCT/JP2016/070883 JP2016070883W WO2017038274A1 WO 2017038274 A1 WO2017038274 A1 WO 2017038274A1 JP 2016070883 W JP2016070883 W JP 2016070883W WO 2017038274 A1 WO2017038274 A1 WO 2017038274A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- outer peripheral
- peripheral end
- pipe joint
- fluid control
- welded
- Prior art date
Links
- 239000012530 fluid Substances 0.000 title claims description 59
- 238000004519 manufacturing process Methods 0.000 title claims description 28
- 239000004065 semiconductor Substances 0.000 title claims description 19
- 230000002093 peripheral effect Effects 0.000 claims abstract description 95
- 238000003466 welding Methods 0.000 claims abstract description 42
- 238000003825 pressing Methods 0.000 claims abstract description 39
- 230000008602 contraction Effects 0.000 claims abstract description 17
- 230000001629 suppression Effects 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000012546 transfer Methods 0.000 claims description 44
- 238000000034 method Methods 0.000 claims description 8
- 238000005304 joining Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 description 19
- 238000007789 sealing Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 235000012431 wafers Nutrition 0.000 description 8
- 239000003566 sealing material Substances 0.000 description 7
- 238000005498 polishing Methods 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
- B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/02—Welded joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/035—Seam welding; Backing means; Inserts with backing means disposed under the seam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/11—Plugs
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/115—Caps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/3065—Plasma etching; Reactive-ion etching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
- B23K2103/05—Stainless steel
Definitions
- the present invention relates to a pipe joint, a fluid control device, a fluid control apparatus, a semiconductor manufacturing apparatus, and a pipe joint manufacturing method.
- Patent Document 1 discloses a sealing method for a pipe joint in which a plate-shaped metal sealing material is accommodated between metal members which are a pair of tube members and sandwiched between both metal members.
- this sealing method the locations of both metal members are welded so that the metal sealing material is not affected by heat and the shrinking direction by welding is the same as the direction of sandwiching the metal sealing material.
- the metal sealing material is hermetically sandwiched and held between the two metal members by utilizing the contraction deformation of the metal member due to welding.
- the pipe joint since the metal sealing material has a plate shape extending in the pipe radial direction of the pair of pipe members, the pipe joint may be increased in size. Moreover, there is a possibility that the metal sealing material is affected by heat due to the welding heat generated when forming the welded portion. Therefore, in the above prior art, the welded portion of the pipe joint and the seal portion made of the metal sealing material are separated through a bent space having an L-shape in cross-section to suppress heat transfer from the welded portion to the seal portion. ing. However, such complicated space formation further accelerates the enlargement of the pipe joint in the pipe radial direction.
- the inner surface of the welded portion formed in the above-described prior art pipe joint faces a narrow L-shaped space in sectional view, and it is difficult to burn out by accessing the inner surface of the welded portion. .
- the pipe joint is limited to a structure that can be burned off by electrolytic polishing or the like.
- the smoothness of the inner surface of the welded portion is made equal to that of physical polishing by burn-off by electrolytic polishing, the burn-off workability deteriorates. Further, when burn-off is performed by electrolytic polishing or the like, the closed portion of the flow path is blocked, so that it is difficult to clean and remove the polishing liquid, and the cleaning work is troublesome.
- the pipe member in this case is limited to a structure that can seal the periphery of the welded portion and allows easy gas replacement in the sealed space, and the design freedom of the pipe member and the pipe joint may be impaired. Moreover, since sealing and gas replacement work are required, it takes time to prepare for the welding work in advance, which may also deteriorate the productivity of the pipe joint.
- the present invention has been made in view of such problems, and the object of the present invention is excellent in both workability and sealing performance, can be promoted in downsizing, and has productivity, reliability, and design freedom.
- the present invention provides a pipe joint, a fluid control device, a fluid control apparatus, a semiconductor manufacturing apparatus, and a pipe joint manufacturing method.
- the pipe joint of the present invention and the pipe joint used in the fluid control device, the fluid control apparatus, and the semiconductor manufacturing apparatus have a first outer peripheral end at one end and an inner side of the first outer peripheral end. At least one of a first member having a first pressing portion, a second member having a second outer peripheral end at one end and a second pressing portion inside the second outer peripheral end, and the first and second pressing portions A fluid flow path formed on one inner side, the first outer peripheral end and the second outer peripheral end are brought into contact over the entire circumference, and at least a part of the outer periphery of the contact portion is welded.
- a welded portion that joins the first outer peripheral end and the second outer peripheral end while causing contraction, and the first pressing portion by moving in a direction in which the first pressing portion and the second pressing portion approach each other due to lateral contraction
- An annular seal part formed between the second pressing part and the first and second members A heat transfer suppressing member that is disposed in a space between the welded portion and the seal portion and that suppresses the transfer of welding heat from the welded portion to the seal portion, and is mounted on the outer peripheral surface of the heat transfer suppressing member.
- a first retaining ring for engaging the heat transfer suppressing member on the inner surface of the two members.
- the pipe joint manufacturing method of the present invention has a first outer peripheral end at one end, a first member having a first pressing portion inside the first outer peripheral end, and a second outer peripheral end at one end, A second member having a second pressing portion inside the second outer peripheral end, a fluid flow path formed inside at least one of the first and second pressing portions, and an inner side of the first and second members And a heat transfer suppressing member disposed in the pipe, wherein the first outer peripheral end and the second outer peripheral end are contacted over the entire periphery, and at least one of the outer periphery of the contact portion Welding the portion and forming a welded portion that joins the first outer peripheral end and the second outer peripheral end while causing lateral contraction, and moving the first and second pressing portions toward each other by lateral contraction.
- a pipe joint, a fluid control device, a fluid control device, and a semiconductor manufacturing device that are excellent in both workability and sealability, can promote downsizing, and have high productivity, reliability, and high design freedom. And a method for manufacturing a pipe joint.
- FIG. 4 It is a perspective view of a block valve as fluid control equipment concerning one embodiment of the present invention. It is the schematic of the fluid control apparatus containing the block valve of FIG. 1, a fluid control apparatus, and a semiconductor manufacturing apparatus. It is a partial cross section figure of the block valve of FIG. It is a disassembled perspective view which shows a part of main body of the block valve of FIG. 1, a closing plug, and a heat-transfer suppression member. It is the disassembled perspective view which showed FIG. 4 in the cross section. It is sectional drawing which shows the assembly
- the block valve 1 provided with the pipe joint which concerns on one Embodiment of this invention based on drawing is demonstrated.
- the block valve 1 includes, for example, a single body 2 (first member) that is a metal (for example, stainless steel) valve body having a rectangular parallelepiped shape, and an upper surface of the body 2 as viewed in FIG. 1.
- a stopper plug (second member) 10 joined to the surface 2c by the welded portion 8 is provided.
- Each actuator 4 includes a drive unit (not shown) that controls the flow rate of the fluid, and operates a valve body (not shown) provided in a valve chamber (not shown) formed in the main body 2.
- FIG. 2 is a schematic diagram of a fluid control device 100 including the block valve 1, a fluid control device 102 including the fluid control device 100, and a semiconductor manufacturing apparatus 104 including the fluid control device 102.
- the semiconductor manufacturing apparatus 104 is, for example, a CVD apparatus, and includes a fluid control apparatus 102 that is a gas supply means, a vacuum chamber 106, an exhaust means 108, and the like, and forms a passive film (oxide film) on a wafer 120 described later. .
- the fluid control device 100 thereafter configures the semiconductor control device 104, such as the pressure gauge 112, the on-off valves 114, 116, 118, and 130 that constitute the block valve 1, and the MFCs (mass flow controllers) 1 to 3. It may be used as a generic term for devices related to fluid control, or as a higher level meaning of individual devices.
- the semiconductor control device 104 such as the pressure gauge 112, the on-off valves 114, 116, 118, and 130 that constitute the block valve 1, and the MFCs (mass flow controllers) 1 to 3. It may be used as a generic term for devices related to fluid control, or as a higher level meaning of individual devices.
- the fluid control device 102 is a device that supplies the gas supplied from the gas supply source 110 to the vacuum chamber 106 by adjusting the flow rate and the like, and includes a pressure gauge 112, on-off valves 114 and 116, MFCs 1 to 3, and the like. Yes.
- An on-off valve 118 is provided between the fluid control device 102 and the vacuum chamber 106.
- the vacuum chamber 106 includes a mounting table 122 on which the wafer 120 is mounted and an electrode 124 that forms a thin film on the wafer 120.
- a commercial power supply 126 is electrically connected to the vacuum chamber 106.
- the exhaust means 108 includes an exhaust pipe 128, an on-off valve 130, a dust collector 132, and a vacuum pump 109.
- the gas supply to the vacuum chamber 106 is controlled by opening / closing the on-off valves 114 and 116, and opening / closing the MFCs 1 to 3 and the on-off valve 118. Further, when removing the granular material which is a by-product generated when the thin film is formed on the wafer 120, the on-off valve 130 is opened, and the granular material flows into the dust collector 132 through the exhaust pipe 128. To be removed.
- block valves 1 constituting three sets of on-off valves 114 and 116 are arranged.
- the block valve 1 is connected to the fluid control apparatus 100 via the pipe member 6 shown in FIG. 1, and the connection method is welding, screwing, or other joint structures. Since the on-off valves 114 and 116 and the on-off valves 118 and 130 constituting the block valve 1 are downsized, the fluid control device 102 can be downsized.
- the miniaturized fluid control apparatus 102 is suitable for use in a semiconductor manufacturing apparatus 104 that is required to be miniaturized, and is a small semiconductor manufacturing apparatus for producing a small-diameter wafer for testing and research purposes.
- a so-called minimal fab device can be realized. By using such a minimal fab device, the installation area of the device in the clean room can be reduced, the running cost of the clean room can be reduced, and prototype wafers for manufacturing various semiconductors can be obtained at low cost. Can do.
- a fluid flow path 12 communicating with each valve chamber is perforated in the main body 2.
- Each pipe member 6 communicates with a flow path (not shown) constituting the flow path 12, and the flow path (not shown) communicates with a valve chamber, and fluid enters and exits the block valve 1 from each pipe member 6 via the flow path and the valve chamber. Is done.
- an opening 14 is formed in the left side surface 2c of the main body 2.
- the opening 14 is formed when a part of the flow path 12 is perforated in the parallel direction of each actuator 4 using a tool such as a drill with respect to the main body 2 and is closed by the closing plug 10.
- the stopper plug 10 is defined as a constituent member of a pipe joint formed by joining the main body 2 of the block valve 1.
- the stopper plug 10 is made of metal (for example, stainless steel) and has a cap shape, and a communication hole 20 is penetrated through the bottom wall 10a of the stopper plug 10.
- a metal (for example, stainless steel) heat transfer suppression member 16 having a ring shape is attached to an outer peripheral end (first outer peripheral end) 14a formed on the outer peripheral side of the opening 14 of the main body 2, and then the stopper plug 10 is attached.
- the main body 2 is welded and joined.
- a separate metal (for example, stainless steel) gasket (seal member) 18 having a ring shape is attached in advance to the heat transfer suppression member 16.
- annular convex portion (first pressing portion) 22 that is convex toward the outer peripheral end 14 a is formed inside the outer peripheral end 14 a of the main body 2.
- the annular convex portion 22 forms an edge of the opening 14, and a part of the flow path 12 is positioned inside the annular convex portion 22.
- An annular recess 24 is formed between the outer peripheral end 14 a of the main body 2 and the annular projection 22.
- the annular recess 24 forms a space 26 for accommodating the heat transfer suppressing member 16. In the space 26, the above-described communication hole 20 of the stopper plug 10 is opened.
- an outer peripheral end (second outer peripheral end) 10b is formed at one end of the closing plug 10 opposite to the bottom wall 10a.
- An annular convex portion (second pressing portion) 28 that is convex toward the outer peripheral end 10 b side is formed inside the outer peripheral end 10 b of the closing plug 10.
- a part of the flow path 12 from the main body 2 side to the bottom wall 10a of the closing plug 10 is positioned inside the annular convex portion 28 of the closing plug 10.
- an annular recess 30 is formed between the outer peripheral end 10 b of the stopper plug 10 and the annular projection 28, and the annular recess 30 forms the space 26 described above in which the heat transfer suppressing member 16 is accommodated.
- the heat transfer suppressing member 16 in which the gasket 18 is fitted is attached to the annular recess 24 side of the main body 2, and then the outer peripheral end 10 b of the closing plug 10 is attached to the outer peripheral end 14 a of the main body 2.
- the outer peripheral end 10b of the stopper plug 10 and the outer peripheral end 14a of the main body 2 are brought into contact with each other over the entire periphery and assembled.
- a retaining ring (first retaining ring) 36 is attached to the outer peripheral surface 16 a of the heat transfer suppressing member 16.
- the retaining ring 36 is a C-shaped spring.
- a repulsive force is generated by the spring, and the heat transfer suppressing member 16 is applied to the inner surface of the outer peripheral end 14 a of the main body 2. Locks and exhibits the function of preventing the heat transfer suppressing member 16 from coming off from the main body 2.
- the outer peripheral end 14a of the main body 2 and the heat transfer suppression member 16 are in contact via the retaining ring 36, direct heat transfer from the welded portion 8 to the heat transfer suppression member 16 is hindered.
- a guide surface 16 b is formed on the inner periphery of the heat transfer suppressing member 16.
- the guide surface 16 b functions as a guide when the gasket 18 is fitted inside the heat transfer suppressing member 16.
- a retaining ring (second retaining ring) 40 is attached to the outer peripheral surface 18 c of the gasket 18.
- the retaining ring 40 is a C-shaped spring similar to the retaining ring 36, and is fitted in a groove formed on the outer peripheral surface 18 c to lock the gasket 18 on the guide surface 16 b of the heat transfer suppressing member 16.
- the outer peripheral surface 18c of the gasket 18 and the heat transfer suppressing member 16 are in contact via the retaining ring 40. Direct heat transfer to the gasket 18 is impeded.
- the forming wall on the outer peripheral side of the space 26 is brought into contact with the outer peripheral ends 10b, 14a.
- a stepped portion 32 is formed on the surface.
- an enlarged diameter portion 34 is formed on the outer peripheral surface 16 a of the heat transfer suppressing member 16, and this expanded diameter portion 34 is locked to the stepped portion 32 when the heat transfer suppressing member 16 is assembled to the main body 2.
- the heat transfer suppressing member 16 is positioned in the space 26.
- the contact portion between the outer peripheral end 10b and the outer peripheral end 14a A contact circle is formed on the outer periphery.
- the welded portion 8 may be formed by spot-welding two opposing points on the contact circle across the center of the contact circle and then welding the contact circle all around. As a result, the outer peripheral end 10b is pressed against the outer peripheral end 14a, and the welded portion 8 is positioned while reliably positioning the closing plug 10 with respect to the main body 2 in a state in which the outer peripheral end 10b and the outer peripheral end 14a are maintained in full contact with each other. Can be formed.
- spot welding is performed at the two points facing each other on the contact circle, and further, spot welding is performed at two other points shifted from the two points on the contact circle by 90 degrees with respect to the center of the contact circle, and then the welded portion 8 is attached. It may be formed.
- the weld 8 formed in this way is heated and expanded by welding, then cooled and contracted, and in the direction indicated by the solid arrow X along the flow path 12, in other words, substantially orthogonal to the weld line of the weld 8.
- the hardness of the gasket 18 is lowered by heat treatment or the like from the annular protrusions 22 and 28, so that a concave portion 38a is formed on the annular end surface 18a by pressing of the gasket 18, and a concave surface is formed on the annular end surface 18b. A portion 38b is formed.
- seal portions 42 are formed on the respective annular end surfaces 18a and 18b to make an annular surface contact that seals the annular convex portion 22 of the main body 2 and the annular convex portion 28 of the closure plug 10. That is, the seal portion 42 of the present embodiment includes the gasket 18 that is sandwiched between the annular convex portion 22 of the main body 2 and the annular convex portion 28 of the closure plug 10 by the lateral contraction of the welded portion 8.
- the space 26 described above is positioned between the welded portion 8 and the seal portion 42 in the block valve 1, and the heat transfer suppressing member 16 is disposed in the space 26.
- Each seal portion 42 faces the space 26, and the space 26 and the outside of the block valve 1 communicate with each other through the communication hole 20. That is, the communication hole 20 is used as a leak port (leakage path) for inspecting leakage of fluid in each seal portion 42 with helium gas or the like after the welded portion 8 and thus each seal portion 42 is formed.
- a highly productive and reliable pipe joint in which the stopper plug 10 is welded to the main body 2 of the block valve 1, and the block valve 1 using the fluid control device 100 including the pipe joint, A fluid control apparatus 102 using the block valve 1 and a semiconductor manufacturing apparatus 104 using the fluid control apparatus 102 can be provided.
- the pipe joint of the present embodiment formed by welding the main body 2 of the block valve 1 and the closing plug 10 includes the heat transfer suppressing member 16, thereby connecting the welded portion 8 and the seal portion 42. Even if it does not leave
- the gasket 18 which comprises the seal part 42 can be made into a ring-shaped simple shape, for example, by using the heat-transfer suppression member 16 with low heat conductivity, such as a product made from ceramics or stainless steel, It is also possible to bring the seal portion 42 close to the pipe diameter direction. Therefore, downsizing of the pipe joint, particularly in the pipe radial direction, can be greatly promoted.
- the highly reliable seal part 42 can be formed by providing the heat transfer suppressing member 16, there is no concern about the liquid contact of the welded portion 8, and the burned-out operation of the weld burn in the welded portion 8, As a result, it is not necessary to perform sealing and gas replacement work to prevent welding burn itself. Therefore, the workability of the pipe joint can be greatly improved. Moreover, since the structure of the pipe joint is not limited to a structure that facilitates sealing and gas replacement, the degree of freedom in designing the pipe joint can be greatly increased.
- the welded portion 8 is formed by melting not only the outer peripheral end 10b of the closure plug 10 with the outer peripheral end 14a of the main body 2 but also the outer peripheral portion of the heat transfer suppressing member 16 as shown in FIG. May be.
- the welding portion 8 by TIG welding or the like with a large amount of heat and thus a large amount of material so that a so-called back wave that melts to the inside can be generated.
- the lateral contraction in the seal portion 42 can be increased, so the size of the pipe joint can be reduced. Both improvement and sealing performance can be realized.
- the stopper plug 10 is defined as a constituent member of a pipe joint formed by joining the main body 2 of the block valve 1, and the pipe joint welds the main body 2 of the block valve 1 and the stopper plug 10. Formed.
- the present invention is not limited to this, and when the pipe member 6 or the like described above is welded to the block valve 1 instead of the closure valve 10, the pipe member 6 or the closure plug 10 or the like is welded to the body of the valve other than the block valve 1. Or when welding pipe members together.
- any one of the members to be welded is a closing plug 10 for closing the outer peripheral end 14a, and the valve body forms a plurality of valve body bodies,
- the inner surface of the welded portion 8 does not have to be burned off, so that the workability of the pipe joint is further improved. Has an effect. This is because, when the welding member is the main body 2 of the block valve 1 and the shut-off plug 10, it is possible to reduce the size of the fluid control device 100 in which a plurality of valves are integrated, but the flow path 12 is made into a block. Because it is formed by drilling, it is difficult to physically access the inner surface of the welded portion 8 after the welded portion 8 is formed, and it is difficult to burn off to remove the weld burn.
- the welding part 8 is formed in the block valve 1 by welding the outer periphery of the contact location of the outer periphery ends 10b and 14a all around.
- the lateral contraction in the welded portion 8 can be generated over the entire circumference of the contact portion of the outer peripheral ends 10b and 14a, the pressing force to the gasket 18 by the annular convex portions 22 and 28 is also increased. It can be generated over the entire circumference of each annular end face 18a, 18b of the gasket 18, and the sealing force at the seal portion 42 can be increased.
- the present invention is not limited to this, and if the seal portion 42 can be formed, the welded portion 8 may be formed by intermittently spot welding the outer periphery of the contact portion of the outer peripheral ends 10b and 14a.
- the welded portion 8 is formed by spot welding, the risk that the seal portion 42 is formed to be inclined with respect to the radial direction of the pipe joint is suppressed as compared with the case of full circumference welding. Accordingly, it is possible to form the seal portion 42 that generates a more uniform sealing force over the entire circumference of the annular convex portions 22 and 28.
- the shapes of the annular protrusions 22 and 28 and the gasket 18 are not limited to the above embodiment, and the seal portion 42 is not limited to surface contact but may be formed by line contact.
- the seal portion 42 is formed in line contact, the surface pressure generated in the seal portion 42 can be increased as compared with the case of surface contact. Therefore, a seal that generates a greater sealing force. Portion 42 can be formed.
- the seal portion 42 may be formed by contacting the annular convex portions 22 and 28 with each other. Since the gasket 18 is not necessary in this place, the number of parts and assembly man-hours of the pipe joint can be reduced, and the productivity of the pipe joint is improved. In this case, since only one seal portion 42 is formed, the risk of fluid leakage from the seal portion 42 is relatively reduced as compared with the case where two seal portions 42 are formed.
- the fluid control device 100 including the block valve 1 in which the pipe joint is welded to the valve can be applied to a fluid control device constituting various fluid circuits other than the fluid control device 102, and the fluid control device 100 is used.
- the fluid control apparatus 102 can be applied to various manufacturing apparatuses that are not limited to the semiconductor manufacturing apparatus 104.
- Block valve (fluid control device, valve) 2 Main body (first member) 4 Actuator (Valve) 8 Welded part 10 Closure plug (second member) 10b Outer peripheral end (second outer peripheral end) 12 Channel 14a Outer peripheral end (first outer peripheral end) 16 Heat transfer suppression member 16a Outer peripheral surface 16b Guide surface 18 Gasket (seal member) 18c outer peripheral surface 22 annular convex part (1st press part) 26 space 28 annular convex part (second pressing part) 36 Retaining ring (first retaining ring) 40 Retaining ring (second retaining ring) 42 Seal Part 100 Fluid Control Equipment (Block Valve) 102 Fluid control device 104 Semiconductor manufacturing device
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Manufacturing & Machinery (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Valve Housings (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
Description
また、溶接部形成の際に発生する溶接熱により金属製シール材が熱影響を受けるおそれがある。そこで、上記従来技術では、管継手の溶接部と金属製シール材によるシール部分とを断面視L字状をなす屈曲した空間を介して離間させ、溶接部からシール部分への熱伝達を抑制している。しかし、このような複雑な空間形成は、管継手の管径方向の大型化をさらに加速させる。
図1に示すように、ブロック弁1は、例えば、直方体形状をなす金属製(例えばステンレス製)のバルブボディである1つの本体2(第1部材)と、図1で見て本体2の上面2aに接続される3つのアクチュエータ4と、図1で見て本体2の背面2bに接続される3つの管部材6(3つのうち1つのみ図示)と、図1で見て本体2の左側面2cに溶接部8で接合される閉止栓(第2部材)10とを備えている。
図2は、ブロック弁1を備える流体制御機器100、流体制御機器100を備える流体制御装置102、流体制御装置102を備える半導体製造装置104の概略図である。半導体製造装置104は、例えばCVD装置であり、ガス供給手段である流体制御装置102、真空チャンバ106、排気手段108などを有し、後述するウエハ120上に不動態膜(酸化膜)を形成する。
図6に示すように、先ず、ガスケット18が内嵌された伝熱抑制部材16を本体2の環状凹部24側に取り付け、次に、閉止栓10の外周端10bを本体2の外周端14aに押圧することにより、閉止栓10の外周端10bと本体2の外周端14aとを全周に亘って当接させて組み付ける。伝熱抑制部材16にガスケット18を予め内嵌することにより、組み付け時にガスケット18が保護され、ガスケット18の傷付きを防止することができる。
一方、ガスケット18の外周面18cには止め輪(第2止め輪)40が装着されている。止め輪40は、止め輪36と同様のC字状のばねであって、外周面18cに形成された溝に装着することで、伝熱抑制部材16のガイド面16bにガスケット18を係止し、伝熱抑制部材16に対するガスケット18の抜け止め機能を発揮するとともに、また、ガスケット18の外周面18cと伝熱抑制部材16とは止め輪40を介して接触するため、伝熱抑制部材16からガスケット18への直接の熱伝達が妨げられる。
なお、溶接部8は、閉止栓10の外周端10bを本体2の外周端14aとの当接箇所のみならず、図7に示すように伝熱抑制部材16の外周部も溶融して形成しても良い。
例えば、上記実施形態では、閉止栓10をブロック弁1の本体2と接合して形成される管継手の構成部材として定義し、管継手はブロック弁1の本体2と閉止栓10とを溶接して形成される。しかし、これに限らず、本発明は、ブロック弁1に閉止栓10ではなく前述した管部材6等を溶接する場合、ブロック弁1以外のバルブのボディに管部材6又は閉止栓10等を溶接する場合、或いは、管部材同士を溶接する場合にも適用可能である。
2 本体(第1部材)
4 アクチュエータ(弁体)
8 溶接部
10 閉止栓(第2部材)
10b 外周端(第2外周端)
12 流路
14a 外周端(第1外周端)
16 伝熱抑制部材
16a 外周面
16b ガイド面
18 ガスケット(シール部材)
18c 外周面
22 環状凸部(第1押圧部)
26 空間
28 環状凸部(第2押圧部)
36 止め輪(第1止め輪)
40 止め輪(第2止め輪)
42 シール部分
100 流体制御機器(ブロック弁)
102 流体制御装置
104 半導体製造装置
Claims (14)
- 一端に第1外周端を有するとともに、前記第1外周端の内側に第1押圧部を有する第1部材と、
一端に第2外周端を有するとともに、前記第2外周端の内側に第2押圧部を有する第2部材と、
前記第1及び第2押圧部の少なくとも何れか一方の内側に形成される流体の流路と、
前記第1外周端と前記第2外周端とを全周に亘って当接させ、当該当接箇所の外周の少なくとも一部を溶接することで、横収縮を発生させながら前記第1外周端と前記第2外周端とを接合する溶接部と、
前記横収縮によって前記第1押圧部と前記第2押圧部とが互いに接近する方向に移動することで前記第1押圧部と前記第2押圧部との間に形成される環状のシール部分と、
前記第1及び第2部材内における前記溶接部と前記シール部分との間の空間に配置され、前記溶接部から前記シール部分への溶接熱の伝達を抑制する伝熱抑制部材と、
前記伝熱抑制部材の外周面に装着され、前記第1又は第2部材の内面に前記伝熱抑制部材を係止する第1止め輪と
を備える、管継手。 - 前記シール部分は、前記第1押圧部と前記第2押圧部とが当接して形成される、請求項1に記載の管継手。
- 前記シール部分は、前記横収縮によって前記第1押圧部と前記第2押圧部とで挟圧されるシール部材を含む、請求項1に記載の管継手。
- 前記伝熱抑制部材は、その内周に前記シール部材を案内して装着するためのガイド面を有する、請求項3に記載の管継手。
- 前記シール部材は、その外周面に前記伝熱抑制部材の前記ガイド面に前記シール部材を係止する第2止め輪が装着される、請求項3又は4に記載の管継手。
- 前記第1及び第2部材の何れか一方は閉止栓である、請求項1から5の何れか一項に記載の管継手。
- 請求項1から6の何れか一項に記載の管継手を備えた流体制御機器であって、
前記第1及び第2部材の何れか他方は、前記流体の入口及び出口を有するとともに、前記入口及び出口の少なくとも何れか一方に前記第1及び第2部材の何れか他方の他端が溶接された弁の本体である、流体制御機器。 - 前記弁の本体は、複数の弁体を連通する流路が穿孔されたブロック弁の本体である、請求項7に記載の流体制御機器。
- 請求項8に記載の流体制御機器を備えた、流体制御装置。
- 請求項9に記載の流体制御装置を備えた、半導体製造装置。
- 一端に第1外周端を有するとともに、前記第1外周端の内側に第1押圧部を有する第1部材と、
一端に第2外周端を有するとともに、前記第2外周端の内側に第2押圧部を有する第2部材と、
前記第1及び第2押圧部の少なくとも何れか一方の内側に形成される流体の流路と、
前記第1及び第2部材の内側に配された伝熱抑制部材と
を備えた管継手の製造方法であって、
前記第1外周端と第2外周端とを全周に亘って当接させ、当該当接箇所の外周の少なくとも一部を溶接し、横収縮を発生させながら前記第1外周端と前記第2外周端とを接合する溶接部を形成する工程と、
前記横収縮によって前記第1及び第2押圧部を互いに接近する方向に移動させ、前記第1押圧部と前記第2押圧部との間に環状のシール部分を形成する工程と、
前記シール部分と前記溶接部との間の空間にて、前記伝熱抑制部材により前記溶接部から前記シール部分への溶接熱の伝達を抑制する工程と
を含む、管継手の製造方法。 - 前記溶接部を形成する工程では、前記第2外周端を前記第1外周端に押圧した状態で前記溶接部を形成する、請求項11に記載の管継手の製造方法。
- 前記溶接部を形成する工程では、前記第1外周端と第2外周端とを全周に亘って当接させた際、前記当接箇所の外周には接触円が形成され、前記接触円の中心を挟んで前記接触円上の対向する2点で点溶接した後、前記接触円を全周溶接して前記溶接部を形成する、請求項11又は12に記載の管継手の製造方法。
- 前記溶接部を形成する工程では、前記接触円上の対向する前記2点で点溶接し、さらに前記接触円上の前記2点から前記中心を基準に90度ずれた別の2点で点溶接した後、前記溶接部を形成する、請求項13に記載の管継手の製造方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201680050463.6A CN107923558B (zh) | 2015-08-28 | 2016-07-14 | 管接头、流体控制器、流体控制装置、半导体制造装置以及管接头的制造方法 |
JP2017537638A JP6718456B2 (ja) | 2015-08-28 | 2016-07-14 | 管継手、流体制御機器、流体制御装置、及び半導体製造装置、並びに管継手の製造方法 |
KR1020187006187A KR102023987B1 (ko) | 2015-08-28 | 2016-07-14 | 관이음, 유체 제어 기기, 유체 제어 장치, 반도체 제조 장치, 및 관이음의 제조 방법 |
US15/752,464 US10737345B2 (en) | 2015-08-28 | 2016-07-14 | Pipe joint, fluid control device, fluid control unit, semiconductor fabrication apparatus and method of forming pipe joint |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015-169186 | 2015-08-28 | ||
JP2015169186 | 2015-08-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017038274A1 true WO2017038274A1 (ja) | 2017-03-09 |
Family
ID=58186987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2016/070883 WO2017038274A1 (ja) | 2015-08-28 | 2016-07-14 | 管継手、流体制御機器、流体制御装置、及び半導体製造装置、並びに管継手の製造方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US10737345B2 (ja) |
JP (1) | JP6718456B2 (ja) |
KR (1) | KR102023987B1 (ja) |
CN (1) | CN107923558B (ja) |
TW (1) | TWI613387B (ja) |
WO (1) | WO2017038274A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7202597B2 (ja) | 2018-07-31 | 2023-01-12 | 株式会社フジキン | アクチュエータおよびこれを用いたバルブ装置 |
WO2022091526A1 (ja) * | 2020-10-30 | 2022-05-05 | 株式会社フジキン | 閉止栓及び流体制御装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07174232A (ja) * | 1993-12-21 | 1995-07-11 | Kiyohara Masako | 金属製シール材のシール方法 |
JP2004074086A (ja) * | 2002-08-21 | 2004-03-11 | Nippon Seisen Co Ltd | フィルター組立体 |
WO2007017937A1 (ja) * | 2005-08-10 | 2007-02-15 | Fujikin Incorporated | 流体制御装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2416308A1 (de) * | 1973-04-06 | 1974-10-24 | English Clays Lovering Pochin | Schweissverbindung fuer zwei metallbauteile |
KR100741980B1 (ko) * | 2005-07-06 | 2007-07-23 | 엘지전자 주식회사 | 다초점 렌즈 |
JP3940850B2 (ja) * | 2005-09-30 | 2007-07-04 | ダイキン工業株式会社 | 管継手、冷凍装置、ヒートポンプ式給湯機、閉鎖弁、給水配管、配管の接続方法、及び現地配管施工方法 |
JP4253026B2 (ja) * | 2007-08-23 | 2009-04-08 | 日本ピラー工業株式会社 | 樹脂製管継手およびその製造方法 |
JP5789851B2 (ja) * | 2011-09-22 | 2015-10-07 | 株式会社フジキン | 継手用シール装置 |
-
2016
- 2016-07-14 CN CN201680050463.6A patent/CN107923558B/zh not_active Expired - Fee Related
- 2016-07-14 JP JP2017537638A patent/JP6718456B2/ja active Active
- 2016-07-14 KR KR1020187006187A patent/KR102023987B1/ko active IP Right Grant
- 2016-07-14 US US15/752,464 patent/US10737345B2/en active Active
- 2016-07-14 WO PCT/JP2016/070883 patent/WO2017038274A1/ja active Application Filing
- 2016-07-19 TW TW105122719A patent/TWI613387B/zh active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07174232A (ja) * | 1993-12-21 | 1995-07-11 | Kiyohara Masako | 金属製シール材のシール方法 |
JP2004074086A (ja) * | 2002-08-21 | 2004-03-11 | Nippon Seisen Co Ltd | フィルター組立体 |
WO2007017937A1 (ja) * | 2005-08-10 | 2007-02-15 | Fujikin Incorporated | 流体制御装置 |
Also Published As
Publication number | Publication date |
---|---|
TW201719066A (zh) | 2017-06-01 |
CN107923558B (zh) | 2019-08-27 |
CN107923558A (zh) | 2018-04-17 |
JPWO2017038274A1 (ja) | 2018-06-14 |
JP6718456B2 (ja) | 2020-07-08 |
US10737345B2 (en) | 2020-08-11 |
KR102023987B1 (ko) | 2019-09-23 |
TWI613387B (zh) | 2018-02-01 |
US20190009353A1 (en) | 2019-01-10 |
KR20180039659A (ko) | 2018-04-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI698602B (zh) | 閥之控制板 | |
JP7140402B2 (ja) | バルブ装置、このバルブ装置を用いた流体制御装置および半導体製造装置 | |
TWI555941B (zh) | Fluid control valve | |
KR101806673B1 (ko) | 진공 밸브 | |
JP2010151698A (ja) | ガスケット型オリフィス及びこれを用いた圧力式流量制御装置 | |
TWI671615B (zh) | 流體控制裝置及使用該流體控制裝置的製品製造方法 | |
JP6910861B2 (ja) | 管継手 | |
WO2017038274A1 (ja) | 管継手、流体制御機器、流体制御装置、及び半導体製造装置、並びに管継手の製造方法 | |
JP2017512285A (ja) | 真空バルブ | |
JP2007147011A (ja) | 継手構造 | |
TW201925662A (zh) | 閥裝置、使用該閥裝置的流體控制裝置及半導體製造裝置 | |
JP2015001009A (ja) | ガス処理装置 | |
US20200217423A1 (en) | Dual port remote plasma clean isolation valve | |
CN210182327U (zh) | 具有嵌入式加热器的面板 | |
JP6824162B2 (ja) | 管継手方法、管継手用部品、該部品を備える管継手、流体制御器、流体制御装置、及び半導体製造装置 | |
KR101448686B1 (ko) | 반도체 제조설비의 배관에 사용되는 가스켓 | |
JP4237032B2 (ja) | 開閉弁及びこれを用いた半導体製造設備用排気装置 | |
WO2020158512A1 (ja) | 流路アセンブリ、この流路アセンブリを用いたバルブ装置、流体制御装置、半導体製造装置および半導体製造方法 | |
JPH10332003A (ja) | ガス制御バルブ | |
WO2010058726A1 (ja) | ダイヤフラムバルブ | |
JP2019108920A (ja) | ダイヤフラムバルブ | |
TW202305272A (zh) | 閥裝置 | |
KR20180045261A (ko) | 게이트밸브용 블레이드 | |
JP2016031121A (ja) | 真空弁 | |
GB2525025A (en) | Improved gasket for heat exchanger |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16841306 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2017537638 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20187006187 Country of ref document: KR Kind code of ref document: A |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 16841306 Country of ref document: EP Kind code of ref document: A1 |