EP0667634A1 - Transportsystem. - Google Patents

Transportsystem. Download PDF

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Publication number
EP0667634A1
EP0667634A1 EP95300322A EP95300322A EP0667634A1 EP 0667634 A1 EP0667634 A1 EP 0667634A1 EP 95300322 A EP95300322 A EP 95300322A EP 95300322 A EP95300322 A EP 95300322A EP 0667634 A1 EP0667634 A1 EP 0667634A1
Authority
EP
European Patent Office
Prior art keywords
vehicle according
conveyance vehicle
vessel
conveyance
heat exchange
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95300322A
Other languages
English (en)
French (fr)
Other versions
EP0667634B1 (de
Inventor
William James Dr. Foote
Colin William Bendall
Roland Gregor Paul Kusay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOC Group Ltd
Original Assignee
BOC Group Ltd
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 BOC Group Ltd filed Critical BOC Group Ltd
Publication of EP0667634A1 publication Critical patent/EP0667634A1/de
Application granted granted Critical
Publication of EP0667634B1 publication Critical patent/EP0667634B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/46—Machines having sequentially arranged operating stations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H01J9/385—Exhausting vessels

Definitions

  • This invention relates to improved conveyance systems for use in the processing of evacuated articles and, more particularly to individual vehicles for use in such systems.
  • each tube is mounted on to an individual conveyance vehicle (sometimes referred to as a "cart") with a plurality of such vehicles forming part of a conveyance system in which the vehicles are in slow but continuous motion along straight or circular/oval production lines.
  • Each conveyance system can typically comprise up to two hundred and fifty vehicles with a production line time of, for example, seventy to one hundred minutes (or more depending on the article being processed.)
  • Each vehicle generally incorporates equipment required to carry out the various finishing process stages for the picture tubes.
  • the known vehicles generally possess a vacuum system in the form, for example, of a diffusion pump or turbomolecular pump backed by a rotary pump.
  • the known vehicles generally also possess a gripper assembly for receiving the "neck" of the television tube and sealingly connecting the interior of the tube to the vacuum system for maintaining a vacuum therein.
  • the gripper assembly is commonly water cooled in order to maintain it at the required temperature whilst in contact with a heated tube.
  • the conveyance system for the vehicles must be equipped with water in-take and discharge troughs, which also require considerable maintenance due to trough obstructions caused by imploding tube parts which in turn cause the pick-up and discharge tubes to bend and/or lift out of this water leading to pump and gripper overheating and cart switch-off.
  • trough obstructions caused by imploding tube parts which in turn cause the pick-up and discharge tubes to bend and/or lift out of this water leading to pump and gripper overheating and cart switch-off.
  • the present invention is concerned with the provision of conveyance vehicles of the type described above in which the above noted difficulties are overcome.
  • a conveyance vehicle for the transportation of a wholly or partially evacuated vessel including:
  • the vehicle refrigeration system also includes further heat exchange means associated with the mouth of a vacuum pump of the vacuum pumping system.
  • further heat exchange means can thereby provide a "guard ring” or “baffle” in the case of diffusion vacuum pumps in particular.
  • an on-board refrigeration unit obviates the need for water cooling to the gripper means and also, if present, to the guard ring or baffle associated with a diffusion vacuum pump.
  • the refrigeration unit can comprise any known form but preferably incorporates a compressor to urge refrigerant fluid around a closed circuit and, in particular, urging compressed fluid to a heat exchanger associated with the gripper means where the fluid is allowed to expand and cool the gripper means.
  • the expanded refrigerant fluid is also caused to pass through further heat exchange means incorporated in to the circuit and being associated with a diffusion pump (if present) as part of the pumping system.
  • conveyance vehicle components must necessarily be mounted on a suitable vehicle body which is appropriately adapted for use within a conveyance system so that the vehicle can generally be caused to move slowly along its production line.
  • a pump porting arrangement comprising a number of different components sealingly connected to each other, notably cylindrical main manifold 1, smaller generally cylindrical components 2, 3 and 4 and a hollow support head 5.
  • the support head 5 has a flange 6 to which a diffusion pump or turbomolecular pump (not shown) of standard design may be attached; the diffusion pump may if desired be backed with an oil-sealed rotary pump.
  • the diffusion pump is of air-cooled design.
  • Component 3 has a horizontally-directed extension 7 ending in a flange 8 to which a vacuum gauge of known design may be attached.
  • the component 3 also has a vertically-directed extension "cup" 8 which acts as a glass trap to receive any physical debris which might be present. Cup 8 is sealingly connected to the component 3 in use but may be disconnected to remove debris after use of the vehicle.
  • the main manifold component 1 has attached at its upper end a gripper means 9 having a gripper head 10 made of thermal conducting material and having a triple vertical bore passing vertically therethrough, the broadest two 11,12 of which are designed to receive the sealing ring (not shown) and the open neck contours of a tube to be conveyed along a production line and the third 13 of which allows a connection between the interior of the tube and the pumping system of the vehicle.
  • the gripper means 9 also includes in close physical contact with the head 10, a heat exchanger arrangement 14 comprising a number of metal discs with a variety of internal spaces/passageways defined therebetween.
  • the vehicles also possesses an on-board refrigeration system comprising a refrigeration unit 15 in the form of an air-cooled compressor system.
  • the refrigeration system also defines a closed circuit for the circulation of refrigerant fluid from the compressor system in the form of a capillary tube connection 16 to an inlet 17 of the heat exchanger arrangement 14 of the gripper head 10, thence via the internal passageways of the arrangement 14 and thence via the tubular system 18 back to the refrigeration unit 15.
  • the tubular system 18 passes through the walls of the support head 5; at the centre of the head 5, a further heat exchanger arrangement is provided in the form of a "chevron" baffle 19.
  • This baffle 19 provides a "guard ring” or “baffle” associated with the mouth of the diffusion pump which, in use, is secured to the flange 6.
  • the guard ring or cold cap can thereby function in the manner described above.
  • an air-cooled diffusion pump (or turbomolecular pump) is attached to the flange 6 and preferably backed with an oil sealed pump and a tube to be processed in the production line is sealingly received in the gripper 9 with a vacuum gauge sealingly attached to flange 6.
  • Refrigerant fluid is urged around the refrigeration system from the air-cooled compression system of unit 15 via the tube 16, ie. in the direction of the arrows, and thereafter is allowed to expand in the heat exchanger arrangement 14 and thereby cool the gripper 9; expanded, cooled refrigerant fluid thereafter is urged via the tubular system 18 to the chevron baffle 19, thereby cooling the baffle, and thence returning to the unit 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP19950300322 1994-01-27 1995-01-19 Transportsystem. Expired - Lifetime EP0667634B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9401528 1994-01-27
GB9401528A GB9401528D0 (en) 1994-01-27 1994-01-27 Improved conveyance system

Publications (2)

Publication Number Publication Date
EP0667634A1 true EP0667634A1 (de) 1995-08-16
EP0667634B1 EP0667634B1 (de) 1999-03-17

Family

ID=10749392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950300322 Expired - Lifetime EP0667634B1 (de) 1994-01-27 1995-01-19 Transportsystem.

Country Status (5)

Country Link
EP (1) EP0667634B1 (de)
JP (1) JPH07270019A (de)
CN (1) CN1110949A (de)
DE (1) DE69508296T2 (de)
GB (1) GB9401528D0 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0743668A1 (de) * 1995-04-20 1996-11-20 Gianluca Bardi Abgaswagen für Fernsehröhre ohne Verwendung eines Wasser-Kühlkreises
EP0793251A1 (de) * 1996-02-27 1997-09-03 The BOC Group plc Transportfahrzeug für einen Vakuumgefäss

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071058A (en) * 1975-05-05 1978-01-31 Compagnie Industrielle des Telecommunications Clt-Alcatel S.A. Pumping unit for television tubes
JPH04286834A (ja) * 1991-03-15 1992-10-12 Toshiba Corp 陰極線管の排気装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071058A (en) * 1975-05-05 1978-01-31 Compagnie Industrielle des Telecommunications Clt-Alcatel S.A. Pumping unit for television tubes
JPH04286834A (ja) * 1991-03-15 1992-10-12 Toshiba Corp 陰極線管の排気装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 094 (E - 1325) 24 February 1993 (1993-02-24) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0743668A1 (de) * 1995-04-20 1996-11-20 Gianluca Bardi Abgaswagen für Fernsehröhre ohne Verwendung eines Wasser-Kühlkreises
EP0793251A1 (de) * 1996-02-27 1997-09-03 The BOC Group plc Transportfahrzeug für einen Vakuumgefäss

Also Published As

Publication number Publication date
DE69508296T2 (de) 1999-08-26
JPH07270019A (ja) 1995-10-20
DE69508296D1 (de) 1999-04-22
CN1110949A (zh) 1995-11-01
GB9401528D0 (en) 1994-03-23
EP0667634B1 (de) 1999-03-17

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