US3554503A - Apparatus for heating synthetic substance threads - Google Patents

Apparatus for heating synthetic substance threads Download PDF

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Publication number
US3554503A
US3554503A US792090*A US3554503DA US3554503A US 3554503 A US3554503 A US 3554503A US 3554503D A US3554503D A US 3554503DA US 3554503 A US3554503 A US 3554503A
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United States
Prior art keywords
tube
heat carrier
throttling
transverse
heating
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Expired - Lifetime
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US792090*A
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English (en)
Inventor
Max Borner
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Sulzer AG
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Sulzer AG
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Publication date
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D02J13/001—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass in a tube or vessel

Definitions

  • This invention relates to an apparatus for heating synthetic substance threads; More'particularly, this invention relates to the use of aflowable heat carrier for heating synthetic threads in false-twisting machines.
  • heating devices have been used to heat synthetic threads to a temperature which permits twisting and setting of the thread during passage of the threads through the machines. Further, these heating devices have been constructed to maintain the thread at the temperature at which the thread becomes plastic. Usually, these heating devices through which the threads have run have been heated electrically. However, this often creates difficulties, particularly when the thread passes through at a relatively high speed.
  • one difficulty arises because it is difficult to hold the thread, which passes through relatively rapidly, for the necessary time at the necessary temperature, about 200 (3., without making the heating device unallowably long in the direction of the This This is due to the fact that starting from the place or zone of maximum temperature, there-is a relatively steep temperature gradient toward the thread inlet and thread outlet of the heating device.
  • the invention provides an apparatus which can be attached to textile machines, such as false -twisters, for heating synthetic threads to predetermined temperatures.
  • the apparatus utilizes a flowable heat carrier and a system of tubing wherein the threads can be substantially unifonnly heated dur' ing passage therethrough.
  • the apparatus includes I are constructed with two longitudinal double-tube sides through each of which a thread runs in the interior space and a heat carrier flows in concentric relation in the surrounding space.
  • each'cell has a pair of transverse sides which connect with the outer tubes of each of the double-tube sides and throughaconnection containing a throttling means to a common distributor or common'collector, respectively, for supplying and removing the heat carrier to and from the double-tube sides.
  • the distributor and collector are constructed with two longitudinal double-tube sides through each of which a thread runs in the interior space and a heat carrier flows in concentric relation in the surrounding space.
  • each'cell has a pair of transverse sides which connect with the outer tubes of each of the double-tube sides and throughaconnection containing a throttling means to a common distributor or common'collector, respectively, for supplying and removing the heat carrier to and from the double-tube sides.
  • the distributor and collector are
  • the transverse. sides of the cells are' made as horizontal connecting tubular parts which extend beyond the ends of the double-tube sides and are closed at both ends, while the outer tubes of the double tubes. are welded to the inside surfaces of the connecting tubular parts and the inner tubes of the double tubes pass through the connecting tubular parts and are welded to their outside surfaces.
  • FIG.2 illustrates-a view taken on line lI-ll of' FIG. 1 of a heating apparatus containing a plurality of framelike cells according to the inventionjand
  • FIG. 3 schematically illustrates a construction of a plurality of heating apparatuses for a pair of textile machines with a circulation system for the heat carrier.
  • the heating apparatus is constructed as a heating element 14 which includes a plurality of framelike cells 2, for example, of rectangular shape, through each of which a pair of threads 1 run in a downward vertical direction.
  • Each cell 2 is formed by a pair of vertically disposed double-tube sides formed by an inner tube 4 and a larger outer tube 4.
  • the outer tube 5 surrounds the inner tube 4 with a slight clearance so that a heat carrier, for example, a synthetic high circulate oil, can circulate therebetween.
  • the selection of specific heat to be high so that only a small quantity of oil a plurality of tramelike cells which deposited from the threads 1.
  • the inset tubes 3 are fitted into n
  • a number of heating apparatuses are generally disposed in a textile machine, and each of them contains, for example, 8 to 10 cells, heating some 16 to 20 threads! border to uniformly need be kept circulating.
  • an inset tube-3 for example of aluminum, is fitted into each inner tube 4 of a double-tube side in order to conveythe threads 1 and to pick hp any materials the inner tubes 4 in a manner so that at the time of heating up and expansion, a good heat conducting connection is made connecting tubes 6, 7 which connect the upper and lower ends of the double-tube sides together.
  • Each of the connecting I tubes 6, 7 extends horizontally beyond the outer tubes 5 and are capped at each end by closure caps 8.
  • the outer tubes 5 are secured, as by welding, "to the inside of the connecting tubes 6, 7 with respect to the cell configuration while the inner tubes 4 extend through the connecting tubes 6, 7 and are secured, as by welding, to the outside-of the connecting tubes 6, 7 as shown.
  • Each connecting tube 6, 7 communicates with a tubular element 1 l at the lowest and highest points, respectively, midway between the double-tube sides.
  • the tubular element 11 of the lower connecting tube 6 further communicates with a distributor conduit 12 while the tubular element of the upper connecting tube 7 communicates with a collector conduit 13. in this -way, the flowable heat carrier medium can be supplied from the distributor conduit 12 to the space between the tubes 4, 5 of the double-tube sides and removed via the collector conduit 13.
  • the connecting tubes 6, 7 with exdead spaces are especially avoided in the system in which the heat carrying oil circulates, and in which, after the system is filled with the heat carrier, there might collect deposits of impurities, of water or air.
  • the oil preferably rises from the bottom to the top.
  • the oil reaches all angles and corners and floats out any foreign substances, since in going from a horizontal to a vertical part of the cell 2, and in going to the distributing and collecting conduits l2 and 13, it is ensured that the transition places are always situated at the highest or lowest point of the horizontal part.
  • the tubular elements 11, which are made as throttling tubes, or which may, however, also be made of wider tubes having throttling places therein ensure a uniform distribution of the heat carrier among the individual cells 2 of the, heating element 14 (FIG. 2), without special regulatory elements being required to ensure this.
  • the great resistance to flow of the tubular elements 11 hereby ensures that at all branch-offs to the individual cells 2 of a heating element 14 uniformity of pressure shall prevail in the distributor conduit 12 and in the collector conduit 13.
  • the distributor conduit 12 andthe collector conduit 13 extend over the entire length of the heating element, and consist of horizontal tubes which are closedat one end by a closure cap 8 and open at the other end into connection conduits 15 and 16 which lead to the forward flow and backward flow system 18, 19 (FIG. 3) common to the complete machine.
  • the conduits 15 and 16, which are made as throttling tubes forthe heating element 14, are each connected eccentrically to the distributors and collectors 12 and 13, respectively, in order to avoid any dead space.
  • the complete heating element 14 consists of a plurality of cells 2 connected in pairs to the same distributing and collecting conduit respectively, and is surrounded by a common high grade insulation 17, for example, a mineral wool.
  • the collector conduit 13 which is partly embedded in a layer of suitable insulation, can by means of holding devices (not shown) serve to fasten the individualheating elements 14 in the textile machine. Also, guide elements (not shown) can then be provided on the distributor conduit 12 to prevent the heating elements 14, suspended in the textile machine, from swinging pendulum fashion.
  • FIG. 3 shows by one example how a plurality of heating elements 14 belonging, for example, to two textile machines, can be combined into one group and can be connected to a main conduit system 26, 27 in which a source of heat (not shown) is disposed.
  • each heating element group forms a closed circulation system for the heat carrying oil wherein the oil is circulated by a pump 20 through the advance flow conduit 18, the individual heating elements 14, the return flow conduit 19, and a mixing tube 21 that is installed in the advance flow conduit 18 through a branch line 23 having a check valve 22 disposed therein.
  • the pump pressure in this system amounts, depending on the size of the system, for example to some to 8 atmospheres gauge.
  • the temperature of the inflow 18 is adjusted to a desired value by a temperature gauge 24 installed in the advance flow conduit 18, for example, to a temperature of 220 C., in such a way that a relatively small partial quantity is carried away from the machine s circuit through a regulatory valve 25 installed in the return flow conduit 19 and controlled by the temperature gauge 24 and is fed into a return flow main conduit 26 which leads to a source of heat, a boiler for example (not shown).
  • a temperature gauge 24 installed in the advance flow conduit 18, for example, to a temperature of 220 C.
  • the regulatory valve 25 in the return flow line 18 is further bridged over by a bypass line 30 provided with a manual control valve 29 so that the system, in the event of some derangement or failure of its regulatory devices, can be maintained manually at the desired temperature.
  • Another bypass line 32 having a, shut off valve on device 33, can short circuit the filter 28, to make it possible to clean the filter 28 from time to time during operation.
  • the pump 20 can suitably be a commercially obtainable rotary pump with slipring sealing, be cause such pumps lose very little through leakage.
  • a bimetallic gauge may, for example, be used.
  • the circulation system of the machines circuit is laid out in such a way that the quantity of oil circulated in unit time through the pump 20, conduits 18, heating elements 14, conduits 19, branch line 23 and mixing tube 21 is approximately 20 times the quantity flowing into and out of the feed conduit 27 and return flow conduit 26.
  • the heat carrying oil should not differ more than 2 C. in temperature at its inflow into and outflow from the system.
  • the selection of the heat carrier depends on the maximum temperature reached. Both the heating elements 14 and also all the inflow and outflow tubes connected to them should be made of suitable temperature withstanding tubes. For example, in the case of tubes for temperatures below 300 C., by tubes designated St. 35.29 should be used, and for temperatures from 300 to 400 C., by tubes marked St. 35.:8 should be used.
  • the construction of the heating element 14 of individual framelike cells 2 with the double tubes 4, 5 through which the threads 1 run makes it possible to manage with a relatively small quantity of filled-in .heat carrier. Furthermore, the long path for the threadsl, situated between the connecting tubes 6 and 7, ensures that the threads are kept at approximately the same temperature for their entire length passing through the tubes 4, 5 which has not been obtained with the arrangement available up to the present time. Through the installation of the throttling tubes 11 between the conduits 12 and 13, respectively, uniform pressure distribution is ensured in the distributing and collecting conduits l2 and 13, which ensures the individual cells 2 receiving equal quantities of heat, without being necessary to provide special regulatory elements for this.
  • An apparatus for heating synthetic threads comprising:
  • each heating element having a plurality of framelike cells therein, each cell including a pair of vertical doubletube sides and a pair of transverse tubes, each doubletube side having an inner tube defining a passage for a thread and a concentric outer tube defining a concentric passage for a heat carrier about said inner tube and being connected at opposite ends to a respective transverse tube;
  • throttling tube means connected respectively to each said transverse tube for throttling a flow of heat carrier therethrough, one of said throttling tube means being connected tothe lowermost side of the lower transverse tube and the other throttling tube means being connected to the highermost side of the upper transverse tube;
  • a common collector connected to each throttling tube means of said upper transverse tubes for removing the heat carrier from each cell.
  • transverse tubes extend horizontally beyond each of said doubletube sides and wherein each said outer tube is secured to the inside of a respective transverse tube and each said inner tube passes through said transverse tube and is secured to the outside of said transverse tube.
  • An apparatus as set forth in claim 1 which comprises a plurality of said heating elements disposed in at least one group and a heat carrier circulation system connected to said heating elements of said group to circulate the heat carrier uniformly through said heating elements.
  • said circulation system includes means for mixing the outflow of heat carrier from each said collector with the supply of heat carrier to each said distribution to regulate the temperature of the heat carrier supplied to each group of heat elements.
  • An apparatus as set forth in claim I further comprising an inset tube removably fitted in each inner tube of said doubletube sides for depositing of thread impurities therein.
  • An apparatus as set forth in claim 1 further comprising means for supplying a heat carrier to said distributor including a conduit eccentrically connected axially to said distributor and means for removing the heat carrier from said collector including a conduit eccentrically connected axially to said collector.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Treatment Of Fiber Materials (AREA)
US792090*A 1968-01-25 1969-01-17 Apparatus for heating synthetic substance threads Expired - Lifetime US3554503A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH117568A CH485045A (de) 1968-01-25 1968-01-25 Einrichtung zum Aufheizen von Kunststoffäden

Publications (1)

Publication Number Publication Date
US3554503A true US3554503A (en) 1971-01-12

Family

ID=4204244

Family Applications (1)

Application Number Title Priority Date Filing Date
US792090*A Expired - Lifetime US3554503A (en) 1968-01-25 1969-01-17 Apparatus for heating synthetic substance threads

Country Status (6)

Country Link
US (1) US3554503A (de)
CH (1) CH485045A (de)
DE (1) DE1660629B2 (de)
FR (1) FR1597338A (de)
GB (1) GB1190720A (de)
NL (1) NL6803382A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860386A (en) * 1973-04-03 1975-01-14 Nobuhisa Kodaira Apparatus for heat treatment of synthetic fibrous yarn
US4029939A (en) * 1974-05-23 1977-06-14 Ernest Scragg & Sons Limited Apparatus for heat treatment of strand material
EP4692431A1 (de) * 2024-08-09 2026-02-11 TMT Machinery, Inc. Kühler

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9201878U1 (de) * 1992-02-14 1992-04-09 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Heizeinrichtung zur Wärmebehandlung synthetischer Fäden

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2910761A (en) * 1957-03-27 1959-11-03 Beaunit Mills Inc Yarn crimping apparatus
US3283414A (en) * 1964-03-04 1966-11-08 Chavanoz Moulinage Retorderie Thermal treatment of synthetic textiles

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2910761A (en) * 1957-03-27 1959-11-03 Beaunit Mills Inc Yarn crimping apparatus
US3283414A (en) * 1964-03-04 1966-11-08 Chavanoz Moulinage Retorderie Thermal treatment of synthetic textiles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860386A (en) * 1973-04-03 1975-01-14 Nobuhisa Kodaira Apparatus for heat treatment of synthetic fibrous yarn
US4029939A (en) * 1974-05-23 1977-06-14 Ernest Scragg & Sons Limited Apparatus for heat treatment of strand material
EP4692431A1 (de) * 2024-08-09 2026-02-11 TMT Machinery, Inc. Kühler

Also Published As

Publication number Publication date
DE1660629A1 (de) 1971-08-26
DE1660629B2 (de) 1973-01-04
GB1190720A (en) 1970-05-06
CH485045A (de) 1970-01-31
NL6803382A (de) 1969-07-29
FR1597338A (de) 1970-06-22

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