US20190072228A1 - Adapter for vacuum-insulated lines - Google Patents

Adapter for vacuum-insulated lines Download PDF

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Publication number
US20190072228A1
US20190072228A1 US16/145,711 US201816145711A US2019072228A1 US 20190072228 A1 US20190072228 A1 US 20190072228A1 US 201816145711 A US201816145711 A US 201816145711A US 2019072228 A1 US2019072228 A1 US 2019072228A1
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United States
Prior art keywords
vacuum
wall
lines
processing installation
enclosure
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.)
Abandoned
Application number
US16/145,711
Inventor
Martin Bless
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Evatec AG
Original Assignee
Evatec AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Evatec AG filed Critical Evatec AG
Priority to US16/145,711 priority Critical patent/US20190072228A1/en
Publication of US20190072228A1 publication Critical patent/US20190072228A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/065—Arrangements using an air layer or vacuum using vacuum
    • 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
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/02—Branch units, e.g. made in one piece, welded, riveted
    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/12—Arrangements for supporting insulation from the wall or body insulated, e.g. by means of spacers between pipe and heat-insulating material; Arrangements specially adapted for supporting insulated bodies
    • F16L59/121—Arrangements for supporting insulation from the wall or body insulated, e.g. by means of spacers between pipe and heat-insulating material; Arrangements specially adapted for supporting insulated bodies for pipes passing through walls or partitions
    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/141—Arrangements for the insulation of pipes or pipe systems in which the temperature of the medium is below that of the ambient temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/6851—With casing, support, protector or static constructional installations
    • Y10T137/6966—Static constructional installations
    • Y10T137/6969—Buildings
    • Y10T137/698—Wall

Definitions

  • the invention described hereafter relates to an adapter respectively connector piece to connect a vacuum-insulated line to a vacuum processing facility.
  • Vacuum processing facilities are systems in which workpieces or substrates are processed respectively treated in a processing room under vacuum conditions, in other words at ambient pressures below the atmospheric pressure. Such systems are known in the state of the art and are used for thermal treatments, coatings, etching processes and many other processes under reduced pressure conditions.
  • a Meissner trap constitutes a cooled condensation surface for trace gases respectively residual gases, primarily for water vapor under vacuum.
  • the cooling liquid must be directed from a source (e.g. cooling unit, storage tank) into and again out of the vacuum processing chamber by means of insulated lines.
  • a source e.g. cooling unit, storage tank
  • vacuum-insulated lines are commonly used in which a flexible line or conduit in an external, vacuum-sealed protective sleeve is guided.
  • the intermediate space between the coolant line itself and the external sleeve is evacuated so that the heat loss to the environment is minimized.
  • Such vacuum lines are commercially available, they can be bought ready to use (pre-evacuated).
  • the intermediate space is often provided with getter material that can compensate for possible leakages or residual gases.
  • the lines are connected via vacuum feed-through in the processing chamber wall with the Meissner trap which, depending on the type of use, can be in the processing room or in a gate/lock.
  • the vacuum lines described are sensitive and no reliably vacuum-tight for a long time. Dismantling and replacing respectively post-evacuating involves a considerable maintenance requirement that negatively impacts the operating efficiency of vacuum processing facilities especially for industrial use.
  • FIGURE shows a cross section of a vacuum adapter according to the invention.
  • the present invention should overcome the disadvantages of the state of the art.
  • a vacuum adapter is proposed that is adapted for feeding-through coolant lines in a vacuum processing installation. These lines are discharged to atmosphere in vacuum-insulated feed lines 30 , 31 .
  • An adapter 4 has an intermediate volume 2 that is connected on the one hand with at least one insulation intermediate space 32 , 33 of the vacuum-insulated feed lines 30 , 31 and on the other hand with a vacuum pump 40 .
  • the solution according to the present invention consists in a vacuum adapter for connecting a coolant line to a cooling trap of a vacuum processing system and simultaneously allows access to the vacuum insulation of the lines. Via this access, a backing pump that is anyway present in the processing system can be connected operatively with the vacuum insulation so that the pump capacity can be used, e.g. with the aid of valves, for evacuating the insulation intermediate space of the feed lines. This can preferably occur when the system itself temporarily does not need this pump capacity. This can happen in a demand-driven fashion or periodically or permanently for preventative maintenance, preferably under the control e.g. of a routine of the vacuum processing facility control itself.
  • the vacuum adapter 4 is shown in cross section. It can be mounted on the wall of a processing facility or even integrated therein.
  • the FIGURE shows a vacuum room 1 and hints at the walls of the facility by means of references 6 , 7 .
  • An outlined cooling trap 10 is fed by a feed respectively drain line 11 , 12 .
  • the vacuum adapter 4 comprises a volume 2 that is connected through a pump neck 5 with a vacuum pump 40 .
  • the volume 2 is sealed vis-a-vis the vacuum room 1 by means of sealing devices 13 , 14 that allow a passage for the coolant feed lines 12 , 11 .
  • the sealing devices 13 , 14 also provide a thermal insulation of the line 11 , 12 vis-a-vis the adapter 4 respectively the wall connectors 6 , 7 .
  • Reference 13 designates a simple disc that can consist of poorly heat-conducting material.
  • Detail 14 denotes a bushing that is screwed e.g. in the wall of the adapter 4 and by means of the projection into the volume 2 increases the heat conductivity resistance between the bracket of the line 11 and the wall.
  • the evacuable volume 2 is open to the insulation intermediate space 32 respectively 33 of the vacuum feed lines 30 , 31 , and thus enables the latter to evacuate without mechanically separating the connections or affecting the vacuum in room 1 .
  • the vacuum lines 30 , 31 consist of an outer sleeve 20 , 21 that can be executed as a rigid or flexible conduit, corrugated tube, envelope or hose.
  • An inner line 22 , 23 represents the coolant line to or from the adapter 4 .
  • References 26 and 27 are flange connections of the external cladding tube 20 , 21 to the adapter 4 ; the connection can alternatively also be made by screwing, welding or by means of another suitable type of connection. The same applies for the outlined flange 24 , 25 of the inner line 22 , 23 .
  • the insulation intermediate space 32 , 33 respectively its dimensional stability can be ensured by means of the spacing elements (not shown here).
  • the insulation intermediate space 32 , 33 is connected permanently with a pump option via the inner space 2 of the adapter 4 .
  • This ensures the operative performance of the vacuum insulation of the feed lines 30 , 31 , and if necessary even controls it fully automatically.
  • a pressure sensor can be installed in the intermediate volume 2 that displays a drop in the insulation vacuum and provides a warning message before the refrigerating capacity in the vacuum room 1 drops. If a processing step may be stopped or delayed in this way, it is possible to avoid damages respectively faults in the workpieces in the room 1 .

Abstract

A vacuum adapter for feeding-through vacuum-insulated coolant lines from the surrounding atmosphere into a vacuum processing installation has an intermediate volume which is connected firstly to at least one insulation intermediate space of the vacuum-insulated feed lines and secondly to a vacuum pump. The pump capacity is available at least temporarily for evacuating the insulation intermediate space around the coolant lines.

Description

    The invention described hereafter relates to an adapter respectively connector piece to connect a vacuum-insulated line to a vacuum processing facility. TECHNICAL BACKGROUND
  • Vacuum processing facilities are systems in which workpieces or substrates are processed respectively treated in a processing room under vacuum conditions, in other words at ambient pressures below the atmospheric pressure. Such systems are known in the state of the art and are used for thermal treatments, coatings, etching processes and many other processes under reduced pressure conditions.
  • Many types of vacuum processing facilities use gates (load locks) in order to use a volume—smaller in comparison with the processing room—for inserting and removing the workpieces in the processing room. The advantage is that this smaller volume can be pumped out (evacuated) faster than the processing room, which thus can be maintained for longer below a low target pressure. Furthermore, in this manner, the processing room can more easily be kept free from harmful ambient gases such as water vapor, volatile organic compounds etc. Some of these contaminations can be removed only with difficulty by means of vacuum pumps, which is why the pumping output is often assisted by so-called Meissner traps. Broadly speaking, a Meissner trap constitutes a cooled condensation surface for trace gases respectively residual gases, primarily for water vapor under vacuum. They are generally made as conduits of copper or stainless steel that are placed in the vacuum chamber in the form of spirals or flat in a meandering pattern in order to provide a cooled surface that is as large as possible. Most commonly, commercially available non-CFC coolants or liquid gases (e.g. N2) can be contemplated as cooling liquids.
  • The cooling liquid must be directed from a source (e.g. cooling unit, storage tank) into and again out of the vacuum processing chamber by means of insulated lines. For this, vacuum-insulated lines are commonly used in which a flexible line or conduit in an external, vacuum-sealed protective sleeve is guided. The intermediate space between the coolant line itself and the external sleeve is evacuated so that the heat loss to the environment is minimized. Such vacuum lines are commercially available, they can be bought ready to use (pre-evacuated). The intermediate space is often provided with getter material that can compensate for possible leakages or residual gases. The lines are connected via vacuum feed-through in the processing chamber wall with the Meissner trap which, depending on the type of use, can be in the processing room or in a gate/lock.
    • Disadvantages of the State of the Art
  • The vacuum lines described are sensitive and no reliably vacuum-tight for a long time. Dismantling and replacing respectively post-evacuating involves a considerable maintenance requirement that negatively impacts the operating efficiency of vacuum processing facilities especially for industrial use.
    • BRIEF DESCRIPTION OF THE DRAWING
  • The FIGURE shows a cross section of a vacuum adapter according to the invention.
    • SUMMARY OF THE INVENTION
  • The present invention should overcome the disadvantages of the state of the art. To this effect, a vacuum adapter is proposed that is adapted for feeding-through coolant lines in a vacuum processing installation. These lines are discharged to atmosphere in vacuum-insulated feed lines 30, 31. An adapter 4 has an intermediate volume 2 that is connected on the one hand with at least one insulation intermediate space 32, 33 of the vacuum-insulated feed lines 30, 31 and on the other hand with a vacuum pump 40.
    •  DETAILED DESCRIPTION
  • The solution according to the present invention consists in a vacuum adapter for connecting a coolant line to a cooling trap of a vacuum processing system and simultaneously allows access to the vacuum insulation of the lines. Via this access, a backing pump that is anyway present in the processing system can be connected operatively with the vacuum insulation so that the pump capacity can be used, e.g. with the aid of valves, for evacuating the insulation intermediate space of the feed lines. This can preferably occur when the system itself temporarily does not need this pump capacity. This can happen in a demand-driven fashion or periodically or permanently for preventative maintenance, preferably under the control e.g. of a routine of the vacuum processing facility control itself.
  • In the FIGURE, the vacuum adapter 4 is shown in cross section. It can be mounted on the wall of a processing facility or even integrated therein. The FIGURE shows a vacuum room 1 and hints at the walls of the facility by means of references 6, 7. An outlined cooling trap 10 is fed by a feed respectively drain line 11, 12. The vacuum adapter 4 comprises a volume 2 that is connected through a pump neck 5 with a vacuum pump 40. The volume 2 is sealed vis-a-vis the vacuum room 1 by means of sealing devices 13, 14 that allow a passage for the coolant feed lines 12, 11. Ideally, the sealing devices 13, 14 also provide a thermal insulation of the line 11, 12 vis-a-vis the adapter 4 respectively the wall connectors 6, 7. Reference 13 designates a simple disc that can consist of poorly heat-conducting material. Detail 14 denotes a bushing that is screwed e.g. in the wall of the adapter 4 and by means of the projection into the volume 2 increases the heat conductivity resistance between the bracket of the line 11 and the wall. The evacuable volume 2 is open to the insulation intermediate space 32 respectively 33 of the vacuum feed lines 30, 31, and thus enables the latter to evacuate without mechanically separating the connections or affecting the vacuum in room 1. The vacuum lines 30, 31 consist of an outer sleeve 20, 21 that can be executed as a rigid or flexible conduit, corrugated tube, envelope or hose. An inner line 22, 23, represents the coolant line to or from the adapter 4. References 26 and 27 are flange connections of the external cladding tube 20, 21 to the adapter 4; the connection can alternatively also be made by screwing, welding or by means of another suitable type of connection. The same applies for the outlined flange 24, 25 of the inner line 22, 23. The insulation intermediate space 32, 33 respectively its dimensional stability can be ensured by means of the spacing elements (not shown here).
  • As illustrated in the drawing, the insulation intermediate space 32, 33 is connected permanently with a pump option via the inner space 2 of the adapter 4. This ensures the operative performance of the vacuum insulation of the feed lines 30, 31, and if necessary even controls it fully automatically. Furthermore, a pressure sensor can be installed in the intermediate volume 2 that displays a drop in the insulation vacuum and provides a warning message before the refrigerating capacity in the vacuum room 1 drops. If a processing step may be stopped or delayed in this way, it is possible to avoid damages respectively faults in the workpieces in the room 1.

Claims (11)

1. Vacuum assembly structured to be connected to a vacuum room (1) and to coolant lines (11, 12, 22, 23) in vacuum-insulated feed lines (30, 31), the vacuum assembly comprising:
an adapter (4) with an enclosure defining an intermediate volume (2), the intermediate volume (2) being configured to fluidly connect to an insulation intermediate space (32, 33) of the vacuum-insulated feed lines (30, 31),
sealing devices (13, 14) disposed at openings in a wall of the enclosure, the sealing devices (13, 14) being adapted to fluidly isolate the intermediate volume (2) from the vacuum room (1), wherein the sealing devices (13, 14) are configured to allow the coolant lines (11, 12) to extend through the sealing devices (13, 14), and
a pump neck (5) formed in the wall of the enclosure and configured to fluidly communicate with the intermediate volume (2), the pump neck being adapted to be connected with a vacuum pump (40).
2. Vacuum assembly according to claim 1, wherein at least one of the sealing devices is a disc (13) made of a material that hinders heat conduction between the coolant lines (11, 12) and the wall.
3. Vacuum assembly according to claim 1, wherein the enclosure includes a pressure sensor in the intermediate volume (2) that displays a drop in a pressure of the insulation intermediate space (32, 33).
4. Vacuum assembly according to claim 1, wherein at least one of the sealing devices is a bushing (14) made of a material that hinders heat conduction between the coolant lines (11, 12) and the wall.
5. Vacuum assembly according to claim 1, wherein the sealing devices (13, 14) are configured to provide a thermal barrier between the coolant lines (11, 12) and the wall of the enclosure by preventing a direct contact between the coolant lines (11, 12) and the wall of the enclosure.
6. Vacuum processing installation with a vacuum room (1) and a vacuum assembly according to claim 1, wherein the vacuum assembly is connected to the vacuum room (1), to coolant lines (11, 12, 22, 23) in vacuum-insulated feed lines (30, 31) and to a vacuum pump.
7. Vacuum processing installation according to claim 6, wherein each of the vacuum-insulated feed lines (30, 31) includes an outer sleeve (20, 21) in the form of a rigid or flexible conduit, a corrugated tube, an envelope or hose, and an inner coolant line (22, 23).
8. Vacuum processing installation according to claim 7, further comprising flange connections (26, 27) for connecting the outer sleeves (20, 21) to the wall of the enclosure.
9. Vacuum processing installation according to claim 6, wherein the vacuum assembly is mounted on a wall of the vacuum processing installation by means of wall connectors (6, 7).
10. Vacuum processing installation according to claim 6, wherein the vacuum pump is a backing pump.
11. Vacuum processing installation according to claim 6, wherein the vacuum assembly is integrated in a wall of the vacuum processing installation.
US16/145,711 2012-05-11 2018-09-28 Adapter for vacuum-insulated lines Abandoned US20190072228A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/145,711 US20190072228A1 (en) 2012-05-11 2018-09-28 Adapter for vacuum-insulated lines

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201261645759P 2012-05-11 2012-05-11
PCT/CH2013/000076 WO2013166612A1 (en) 2012-05-11 2013-05-06 Adapter for vacuum-insulated lines
US201414400145A 2014-11-10 2014-11-10
US16/145,711 US20190072228A1 (en) 2012-05-11 2018-09-28 Adapter for vacuum-insulated lines

Related Parent Applications (2)

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US14/400,145 Continuation US10295110B2 (en) 2012-05-11 2013-05-06 Adapter for vacuum-insulated lines
PCT/CH2013/000076 Continuation WO2013166612A1 (en) 2012-05-11 2013-05-06 Adapter for vacuum-insulated lines

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US20190072228A1 true US20190072228A1 (en) 2019-03-07

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US14/400,145 Active 2034-02-17 US10295110B2 (en) 2012-05-11 2013-05-06 Adapter for vacuum-insulated lines
US16/145,711 Abandoned US20190072228A1 (en) 2012-05-11 2018-09-28 Adapter for vacuum-insulated lines

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US14/400,145 Active 2034-02-17 US10295110B2 (en) 2012-05-11 2013-05-06 Adapter for vacuum-insulated lines

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US (2) US10295110B2 (en)
EP (1) EP2847507B1 (en)
CN (1) CN104685285B (en)
TW (1) TWI603561B (en)
WO (1) WO2013166612A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3654965A (en) * 1967-06-23 1972-04-11 Pneumatiques Caoutchouc Mfg Closure members for pipe sections
US4444221A (en) * 1980-03-11 1984-04-24 Labenz Gary F Sewer manhole channel construction and method
US20030116962A1 (en) * 2001-12-05 2003-06-26 Magennis Brian Roy Adaptor for forming a branch in a conduit
US7165571B1 (en) * 2005-06-08 2007-01-23 Mirko Buzdum Dual pneumatic quick-disconnect coupler adapter
US20090079186A1 (en) * 2007-09-24 2009-03-26 Honeywell International, Inc. Flexible fitting for rigid tubing assembly
US9841114B1 (en) * 2014-12-01 2017-12-12 Alfredo Lozano Aguilar Hydrocarbon pipeline pressure safety relief bypass system

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Publication number Priority date Publication date Assignee Title
DE3131336A1 (en) 1981-08-07 1983-02-24 Helmut 7000 Stuttgart Schlaich Pipe-manifold piece for vacuum and gas lines
DE9102151U1 (en) * 1990-03-06 1991-05-16 Geberit Ag, Jona, St.Gallen, Ch
IT1258958B (en) * 1992-06-08 1996-03-11 Getters Spa PROCESS PERFECTED FOR THE CREATION OF THERMALLY INSULATING INSULATION THROUGH VACUUM AND INSULATING MATERIALS
US5625947A (en) 1995-03-08 1997-05-06 Kimball Physics, Inc. Method for forming a vacuum port manifold
DE102006036493A1 (en) * 2006-08-04 2008-02-21 Oerlikon Leybold Vacuum Gmbh vacuum pump
DE202009006902U1 (en) * 2009-05-13 2009-07-23 Scheugenpflug Ag transport line
CN201897032U (en) * 2010-10-29 2011-07-13 泰安泰山电气有限公司 Vacuum-pumping communicating pipe for oil-immersed transformer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3654965A (en) * 1967-06-23 1972-04-11 Pneumatiques Caoutchouc Mfg Closure members for pipe sections
US4444221A (en) * 1980-03-11 1984-04-24 Labenz Gary F Sewer manhole channel construction and method
US20030116962A1 (en) * 2001-12-05 2003-06-26 Magennis Brian Roy Adaptor for forming a branch in a conduit
US7165571B1 (en) * 2005-06-08 2007-01-23 Mirko Buzdum Dual pneumatic quick-disconnect coupler adapter
US20090079186A1 (en) * 2007-09-24 2009-03-26 Honeywell International, Inc. Flexible fitting for rigid tubing assembly
US9841114B1 (en) * 2014-12-01 2017-12-12 Alfredo Lozano Aguilar Hydrocarbon pipeline pressure safety relief bypass system

Also Published As

Publication number Publication date
CN104685285A (en) 2015-06-03
TWI603561B (en) 2017-10-21
EP2847507B1 (en) 2018-04-04
WO2013166612A1 (en) 2013-11-14
US20150135730A1 (en) 2015-05-21
TW201401700A (en) 2014-01-01
EP2847507A1 (en) 2015-03-18
CN104685285B (en) 2017-03-08
US10295110B2 (en) 2019-05-21

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