EP0608402A1 - Process and device for consolidating and coating an air-core coil. - Google Patents
Process and device for consolidating and coating an air-core coil.Info
- Publication number
- EP0608402A1 EP0608402A1 EP93917433A EP93917433A EP0608402A1 EP 0608402 A1 EP0608402 A1 EP 0608402A1 EP 93917433 A EP93917433 A EP 93917433A EP 93917433 A EP93917433 A EP 93917433A EP 0608402 A1 EP0608402 A1 EP 0608402A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coil
- station
- air
- air throttle
- resin mixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000011248 coating agent Substances 0.000 title claims abstract description 6
- 238000000576 coating method Methods 0.000 title claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 239000000057 synthetic resin Substances 0.000 claims abstract description 16
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 16
- 238000011282 treatment Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 238000004804 winding Methods 0.000 claims abstract description 5
- 238000005470 impregnation Methods 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 7
- 238000010422 painting Methods 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 4
- 229920001187 thermosetting polymer Polymers 0.000 claims description 3
- 238000007591 painting process Methods 0.000 claims description 2
- 238000002791 soaking Methods 0.000 claims description 2
- 230000035622 drinking Effects 0.000 claims 1
- 239000000725 suspension Substances 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 3
- 239000004848 polyfunctional curative Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 238000011369 optimal treatment Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/002—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the work consisting of separate articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/122—Insulating between turns or between winding layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/127—Encapsulating or impregnating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/02—Fixed inductances of the signal type without magnetic core
Definitions
- the invention relates to a method for solidifying
- Coating an ironless air throttle / its coil is made up of a single or multi-layer winding of bare, electrically conductive, twisted metal wire ropes of essentially rectangular cross-section, in which in a soaking process liquid thermosetting synthetic resin mixture within the ropes into the spaces between the Metal wires penetrate and form a film on the surface of the coil, after which the air throttle is heat-treated and the resin mixture absorbed by it is cured. It also relates to an advantageous device for performing this method.
- the impregnation process is carried out by immersing in a bath of a synthetic resin mixture consisting of a thermoplastic synthetic resin, a hardener and an accelerator.
- a synthetic resin mixture consisting of a thermoplastic synthetic resin, a hardener and an accelerator.
- relatively large amounts of resin mixture must be placed in the resin container, with only a very small part of it being absorbed by the impregnated throttle during each impregnation process.
- the invention aims to remedy this.
- the method according to the invention as characterized in claims 1-3, solves the problem of being able to make do with a significantly lower resin supply during the impregnation process than by immersing the known impregnation process mentioned above.
- the device according to the invention according to claims 4-8 for carrying out the method according to the invention represents a new, particularly favorable mechanical engineering solution.
- 1 shows a schematic representation in elevation in the direction of arrow 1 (see FIG. 3) the impregnation station 2 of the device
- Fig. 2 shows a partial cross section of Fig. 1
- Fig. 3 is a schematic representation of the overall device.
- FIG 1 shows an ironless air throttle 3 to be treated, which here consists of a single-layer coil of bare, electrically conductive, twisted metal wire ropes of rectangular cross-section, with several glass fiber tapes distributed over the circumference of the coil and running in the coil axis (from FIG 1 not visible) serve as a spacer between adjacent turns of the coil.
- 2 shows in a partial cross section (detail 4) the ropes 5 and the glass fiber ribbons 7 running in the direction of the arrow 6, which have folds 8 which have been pushed into the spaces between adjacent turns.
- the coil is held together on the top and bottom by two holding stars connected by a central axis 9.
- the axis 9 has * - at its upper end a mounting eyelet, via which the air throttle 3 is mounted on the underside of a turntable 10.
- 11 with a chain conveyor mounted on the ceiling structure 12 of the workshop is designated, which serves to support the air throttle 3 in the hanging state or to transport it (perpendicular to the plane of the drawing).
- the suspension is carried out by means of suspension elements 13 rotatably arranged in the chain conveyor, each of which has an eyelet at its lower end, in which the turntable 10 together with the air throttle 3 hanging on it is suspended by means of a hook 14.
- the impregnation station 2 (FIG. 1) further comprises a spray lance 16 which extends between the upper edge of the air throttle 3 and the rotating ring 10 and which is provided with an actuator 15 and has a slot-shaped nozzle opening which is adjustable in length by means of the actuator 15.
- the spray lance 16 is connected to a resin supply system comprising a pump 17 and a reservoir 18. Under the suspended air restrictor 3, a sump 19 is provided with a resin return 20 to the resin delivery system.
- a drive device 21 with a pivoting part 22, which has a drive pinion 23, which can be brought into engagement with the rotating ring 10 serves to rotate the air throttle 3.
- the overall device for carrying out the method according to the invention has a number of work or treatment stations, between which the air throttles 3, each provided with a rotating ring 10, are moved by means of a chain conveyor system.
- the device shown schematically in FIG. 3 has two chain conveyors 11 and 25 coupled to one another via a switch 24.
- the chain conveyor 11 serves a loading station 26, a preheating station 27, the impregnation station 2 and a curing station 28, while the chain conveyor 25 for operating a station 29 for manual treatment with several positions, which simultaneously functions as an unloading station, and a painting station 30 serves.
- the chain conveyors 11 and 25 are of the known "Power and Free" type, in which transport elements which are movable along a transport chain are provided, which have suspension elements 13 which are rotatably mounted about a vertical axis and which locks in the various work or treatment stations or - coupled with the transport chain when the lock is released and taken along by it.
- the preheating stations 27 and the curing station 28, which are hot air ovens, and the cabin-like painting station 30 each have a slot (not visible in FIG. 3) at the entrance or exit of double doors 31 and on their ceiling in the transport direction, through which the receiving elements 13 pass through, so that the air restrictors 3 together with the turntable 10 can be brought into the preheating station 27, the curing station 28 or the painting station 30.
- the air throttles 3 to be treated are each turned into a treatment unit with a rotating ring 10. connected unit 32.
- a treatment unit 32 is now suspended in the loading station 26 in the eyelet of a suspension element 13 and brought by means of the chain conveyor 11 into the preheating station 27, in which the air throttle 3 is thoroughly dried at approximately 130-150 ° C.
- the treatment unit 32 is then transported to the impregnation station 2, the heart of the device.
- the drive pinion 23 of the drive device 21 is first brought into engagement with the slewing ring 10 by pivoting the pivoting part 22. Then the drive device 21 is switched on and the turntable 10 together with the air throttle 3 is set in slow rotation.
- the circumferential speed of the air throttle 3 is less than 4 cm / s, but advantageously, for example, 2 cm / s.
- a curable liquid synthetic resin mixture advantageously an epoxy resin hardener mixture which may contain an accelerator, is now supplied from the reservoir 18 by means of the pump 17 to the spray lance 16.
- the synthetic resin mixture then emerges from the slot-shaped nozzle opening in the form of a flat jet 33 which tapers in width and then runs downward on the inside and outside of the coil of the rotating air throttle 1.
- the glass fiber tapes 6 are impregnated with the synthetic resin mixture and the surfaces of the electrically conductive ropes 2 of the coil are covered with a film from which the synthetic resin mixture penetrates into the spaces between the metal wires that form the ropes 4.
- Excess resin mixture 34 drips into the collecting trough 19 and is returned to the inlet side of the pump 17 for reuse.
- the air throttle is poured with the synthetic resin mixture, for example, for 10 minutes, after which it is left to drain for a further 10 minutes. In total, about ten times the amount of synthetic resin that ultimately remains on the air throttle is poured onto it.
- the treatment unit 32 is brought to the curing station 28, where the air throttle 3 is cured at a temperature of about 160 to 180 ° C.
- the lingering The time of the air throttle in the curing station 28 is, for example, 240 min., so that in order to ensure an optimal treatment throughput of the air throttles 3, two air throttles are advantageously cured at the same time in full operation.
- the treatment units 32 are transferred from the chain conveyor 11 to the chain conveyor 25 via the switch 24 and from there to the station 29 for manual treatment, which has several positions and at the same time serves as a buffer store for the treatment units 32.
- various manual tasks can be carried out on the rotatably suspended air throttles, in particular covering certain areas of the air throttle 3 for the subsequent painting process.
- the treatment units 31 are then transported to the painting station 30 and the air throttles 3 are subjected to a painting there and then returned to the station 29, where, for example, the painting covers are removed again and the treatment units 32 are unloaded, after which the slewing rings 10 decreases from the finished air restrictors 3.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Manufacture Of Motors, Generators (AREA)
- Insulating Of Coils (AREA)
- Electrostatic Spraying Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT1680/92 | 1992-08-20 | ||
AT0168092A AT402243B (en) | 1992-08-20 | 1992-08-20 | METHOD FOR STRENGTHENING AND COATING AN AIR THROTTLE AND DEVICE FOR CARRYING OUT THIS METHOD |
PCT/AT1993/000131 WO1994004281A1 (en) | 1992-08-20 | 1993-08-20 | Process and device for consolidating and coating an air-core coil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0608402A1 true EP0608402A1 (en) | 1994-08-03 |
EP0608402B1 EP0608402B1 (en) | 1997-01-22 |
Family
ID=3518670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93917433A Expired - Lifetime EP0608402B1 (en) | 1992-08-20 | 1993-08-20 | Process and device for consolidating and coating an air-core coil |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0608402B1 (en) |
AT (2) | AT402243B (en) |
CZ (1) | CZ283727B6 (en) |
DE (1) | DE59305257D1 (en) |
HU (1) | HUT67909A (en) |
SK (1) | SK44994A3 (en) |
WO (1) | WO1994004281A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3998612B2 (en) * | 2003-08-19 | 2007-10-31 | ミネベア株式会社 | Impregnation and curing winding, impregnation and curing method therefor, impregnation and curing system, impregnation and curing apparatus, varnish coating apparatus |
CN113223854B (en) * | 2021-05-25 | 2022-09-27 | 江西变电设备有限公司 | Moisture-proof anaerobic adhesive filling device for winding joint of dry-type transformer |
DE102022128506A1 (en) * | 2022-10-27 | 2024-05-02 | Audi Aktiengesellschaft | Method for impregnating at least one wire winding of a component |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1157952A (en) * | 1964-11-09 | 1969-07-09 | Sperry Rand Ltd | Trickle Impregnation Machine |
DE1538918B2 (en) * | 1966-10-27 | 1971-09-23 | Licentia Patent Verwaltungs GmbH, 6000 Frankfurt | PROCESS FOR IMPRAEGNATING WINDINGS |
JPS56118318A (en) * | 1980-02-22 | 1981-09-17 | Toshiba Corp | Manufacture of resin molded coil |
DE8712149U1 (en) * | 1986-09-19 | 1988-01-28 | Bäuerle, Fritz, 7208 Spaichingen | Impregnation machine for impregnating electrical machine parts |
-
1992
- 1992-08-20 AT AT0168092A patent/AT402243B/en not_active IP Right Cessation
-
1993
- 1993-08-20 HU HU9401057A patent/HUT67909A/en unknown
- 1993-08-20 SK SK449-94A patent/SK44994A3/en unknown
- 1993-08-20 EP EP93917433A patent/EP0608402B1/en not_active Expired - Lifetime
- 1993-08-20 DE DE59305257T patent/DE59305257D1/en not_active Expired - Fee Related
- 1993-08-20 WO PCT/AT1993/000131 patent/WO1994004281A1/en active IP Right Grant
- 1993-08-20 CZ CZ94768A patent/CZ283727B6/en unknown
- 1993-08-20 AT AT93917433T patent/ATE148010T1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9404281A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1994004281A1 (en) | 1994-03-03 |
HU9401057D0 (en) | 1994-07-28 |
CZ76894A3 (en) | 1994-07-13 |
AT402243B (en) | 1997-03-25 |
CZ283727B6 (en) | 1998-06-17 |
DE59305257D1 (en) | 1997-03-06 |
HUT67909A (en) | 1995-05-29 |
EP0608402B1 (en) | 1997-01-22 |
ATE148010T1 (en) | 1997-02-15 |
SK44994A3 (en) | 1994-08-10 |
ATA168092A (en) | 1996-07-15 |
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