EP0943435B1 - Cylindre réfrigérant - Google Patents

Cylindre réfrigérant Download PDF

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Publication number
EP0943435B1
EP0943435B1 EP99102756A EP99102756A EP0943435B1 EP 0943435 B1 EP0943435 B1 EP 0943435B1 EP 99102756 A EP99102756 A EP 99102756A EP 99102756 A EP99102756 A EP 99102756A EP 0943435 B1 EP0943435 B1 EP 0943435B1
Authority
EP
European Patent Office
Prior art keywords
chill roller
cooling
chill
coolant
central supply
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.)
Expired - Lifetime
Application number
EP99102756A
Other languages
German (de)
English (en)
Other versions
EP0943435A1 (fr
Inventor
Clemens Johannes Maria De Vroome
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0943435A1 publication Critical patent/EP0943435A1/fr
Application granted granted Critical
Publication of EP0943435B1 publication Critical patent/EP0943435B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F26B13/18—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning heated or cooled, e.g. from inside, the material being dried on the outside surface by conduction
    • F26B13/183—Arrangements for heating, cooling, condensate removal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0476—Cooling
    • B41F23/0479—Cooling using chill rolls

Definitions

  • the present invention relates to a cooling roll for the graphic Industry especially for cooling a printed material web in one Rotary printing press.
  • US 4920,881 discloses a method for cooling hot material webs.
  • the Disclosure relates to a method of cooling a hot web of material while this passes a rotating thermally conductive chill roll, which with is provided with a circulating cooling medium.
  • a cooling medium in liquid form is fed to the cooling roller, at a Temperature and a pressure that allows the cooling medium in liquid form to be present, the temperature being above the dew point. The boiling point The cooling medium is low enough to evaporate the liquid Coolant to allow heat absorption in the cooling roller.
  • the coolant vapor is then extracted from the cooling roll and condenses into the liquid phase, then returns to the chill roll to be fed. Cooling media that are typically used here floured hydrocarbons.
  • EP-0468219A1 discloses a chill roll stand with a plurality of Chill rolls. Using this solution from the prior art Boundary layers of surrounding air and oil vapors on both sides of the clinging to the passing web, dissipates as the web winds through the web Chill roll stand moved.
  • the cooling rollers are mounted in frames, which are adjusted to each other. By moving the respective frame the cooling rollers can assume positions in which parts of the moving material webs on opposite sides the cooling rollers partially wrap around, with the cooling rollers at a short distance are kept apart from each other around a zone that degrades the boundary layer form.
  • the boundary layers attached to these sections of the material web are kept in close contact with each other and are in the boundary layer reducing zone.
  • This Document discloses a cooling roll for cooling a web of material
  • a printed material web as used in the graphics industry is used, and in which a uniform temperature over the Cooling roll width is maintained.
  • the inner one Chill roll body is opposite on inner ends Storage points stored and the outer chill roll body is stored such that it can rotate around the inner chill roll body.
  • Cooling medium is through a bearing point introduced through one end of the chill roll assembly into one central tube in which the coolant is evenly in an annular Space flows between the outer and inner chill roll body and which is evenly between the inner and outer chill roll body extends.
  • the coolant flow taking place in this way leads to a improved heat transfer from the outer rotating cooling roll jacket to circulating cooling medium.
  • Heated coolant is in the central tube collected and leaves the central tube through one of the storage points.
  • Turbulence-inducing bars between the inner and outer Chill roll bodies cause turbulence in the coolant, causing the Heat transfer is significantly improved.
  • the present invention is based on the outlined prior art based on the task of increasing the cooling roller temperatures in a simple manner influence.
  • Another object of the present invention is to prevent the Appearance of oil condensate on the surfaces of the corresponding Chill rolls.
  • the solution outlined comes with a diverse number of advantages.
  • There the cooling medium can be supplied to all mixing chambers at the same time there is no zone within the cooling roller with a cooling medium supplied different temperatures.
  • the ratio of the coolant flows in a respective mixing chamber through the inlet openings to the coolant flow through the overflow openings remains over the entire width of the cooling roll according to the invention constant.
  • the surface of the invention Cooling roller is always in contact with a cooling medium, which over the entire Cooling roll width has the same temperature. This turns out to be independent from the flow of the cooling medium, a uniform one across the width of the cooling roll Temperature profile. Due to the water jet-like supply of the cooling medium in the single mixing chamber of the cooling roll is a within the mixing chamber Recirculation flow stimulated, leading to the emergence of a uniform Contributes to the temperature profile.
  • All mixing zones are connected to the central supply line for the cooling medium in connection, so that the mixing zones are simultaneously acted upon by cooling medium become.
  • the cross section of the inlet openings increases across the width of the cooling roll seen to ensure that the relationship between fresh Coolant inlet flow in a mixing zone to the resulting coolant flow in this mixing zone remains constant across the width of the chill roll.
  • the central supply line can be located on one of the end faces of the cooling roll Fasten.
  • the central supply line has a conical shape, which is has a tapering end on the outlet end of the cooling roller. Thereby arises between the inside surface of the cooling roll and the Outside of the tapered central supply line funnel-shaped flow area.
  • the funnel-shaped flow area which is extends over the width of the cooling roll, allows an even distribution of of the cooling medium and consequently an even temperature profile.
  • Another embodiment of the present invention relates to a Chill roll with a central supply line, the cross section of which Viewed width of the cooling roller remains constant.
  • the mixing zones are formed by partitions that are on the central Supply line are attached.
  • the partitions can be ring-shaped trained or executed as circular plates on the central supply line be attached. Since an overflow of the resulting coolant flow from one to one adjacent mixing zone takes place, the partitions include openings so that the resulting coolant flow can happen in each case.
  • the corresponding Cross-sectional areas of the overflow openings between the mixing zones take on the Width of the cooling roller seen too, since the resulting coolant flow of one Mixing zone in the adjacent mixing zone seen across the width of the cooling roller increases.
  • the fresh coolant flow into the mixing zones also increases proportionally to see the ratio of coolant flows across the width of the chill roll to keep constant.
  • the cooling rolls according to the invention can be used in cooling roll stands.
  • the number of Cooling rolls in a cooling roll stand vary between 5 and 9.
  • Chill roll stands are usually behind continuous dryers of rotary printing presses installed after the material web has passed a number of printing units.
  • Figure 1 is a schematic representation of a double-walled cooling roller played.
  • a double-walled cooling roll 1 is between the side walls of a cooling roll stand stored, which is not shown in detail here.
  • a Pipe system installed, which has an inlet pipe 4 and a drain pipe 5 for the Includes cooling medium.
  • the direction of flow of the cooling medium runs from the inlet to the Outlet side of the cooling roller 1.
  • a cavity 2 Between an inner body of the cooling roller 1 and the outer surface 3 of the cooling roll, there is a cavity 2, which flows past the Cooling medium along the inside of the surface 3 of the cooling roller 1 allows.
  • Figure 2 gives a simplified representation of a double-walled cooling roll again, which comprises a spiral turn for the cooling medium.
  • Figure 3 shows a longitudinal section through a chill roll according to the present Invention.
  • the cooling roller 8 comprises two end faces 9, 10, a first end face 9 and one second end face 10.
  • the first end face 9 there is an inlet 13 for cooling medium integrated, which supplies the cooling medium to the cooling roller 8.
  • the second end face 10 the cooling roller 8 comprises an outlet 14 through which the cooling medium from the Cooling roller 8 is passed out.
  • a valve 11 On the inlet side of the cooling medium Cooling roller 8 is a valve 11 through which the supply of Cooling medium to the cooling roller 8 set and different volume flows of Cooling medium to the inside of the cooling roller 8 can be realized.
  • the Cooling medium which is supplied through the inlet 13 flows in the direction 15 through the inside of the cooling roller 8.
  • This first mixing zone 16.1 is characterized by a the central supply line 12 provided inlet opening 16.3 with a Coolant supplied.
  • the partition 16, which the first mixing zone 16.1 separates, further comprises an overflow opening 16.2, which between the Inside of the surface 3 of the cooling roller 8 and the end of the partition 16 is formed. It allows the cooling medium to flow out of the first Mixing zone and an inflow of the cooling medium into the subsequent Adjacent mixing chamber 17.1.
  • the adjacent mixing zone 17.1 is between the aforementioned partition 16 and another partition, which is attached to the central supply line 12.
  • the further one Mixing zone 17.1 is through an inlet opening 17.3 from the central Supply line 12 supplied with cooling medium.
  • the partition which can be designed, for example, as a circular plate equally one overflow opening 17.2 for the cooling medium in the next neighboring mixing zone 18.1.
  • the flow conditions are in one Mixing zone explained in more detail.
  • the description given here applies equally to all mixing zones of the cooling roller 8 according to FIG. 3.
  • the cooling medium flow divides and flows along the Partitions 19 and 20 back to the bottom of the mixing zone 20.1. Mixes there the cooling medium with continuously entering cooling medium, and holds the temperature in the mixing zone is constant.
  • the Overflow opening 20.2 of the mixing zone 20.1 is dimensioned such that the Coolant flow of the previous mixing zones 16.1, 17.1, 18.1, 19.1 and 20.1 can pass through this opening and no backwater forms.
  • cooling medium from the central supply line 12 into the mixing zones 20.1.
  • This freshly entering cooling medium has a temperature, for example of 10 ° C and heats up in contact with the inside of the surface 3 of the Cooling roller 8, for example, to 13 ° C.
  • After flowing along the Partitions 19 and 20 of the mixing zone 20.1 will flow back Heat the cooling medium to, for example, approx. 16 ° C before it starts with the temperature-controlled cooling medium freshly entering through the inlet opening 20.3. In this way, heat is dissipated from the surface 3 of the cooling roll 8.
  • the volume flow of the cooling medium to be fed to the cooling roller 8 can be via a valve 11 can be controlled which in the feed line to the cooling roller 8 is provided.
  • a valve 11 can be controlled which in the feed line to the cooling roller 8 is provided.
  • the downstream have cooling roll 8 lying behind the first cooling roll in the cooling roll stand higher surface temperatures. These temperatures depend on processing web material, depending on whether calendered or finely coated paper can be processed in rotation.
  • FIG 4 shows a further embodiment according to the present invention, in which a conical central supply line including funnel-shaped flow areas are shown.
  • the cooling roller 8 comprises one conically tapering central supply line 15, which at the Face 9 of the cooling roller 8 is attached.
  • the inlet 13 is on the end face 9 connected, while on the opposite end 10 of the Cooling roller 8 the drain 14 is connected.
  • the tapered end of the central supply line 15 points in Direction of the discharge end of the cooling roller 8.
  • the design of the central supply line 15 is funnel-shaped Flow areas between the central supply line 15 and the Inside of the cooling roller 8.
  • each mixing zone 16.1 to 24.1 is included an inlet opening 16.3 to 24.3 for the cooling medium.
  • the ratio of the coolant flows is thereby across the width of the cooling roll kept constant that the respective fresh coolant flows 17.4 to 24.4 the mixing zones across the width of the cooling roller 8 seen proportional to the overflowing, respectively resulting coolant flows 16.2 to 23.2 in the funnel-shaped flow sections grows. This will make it even Temperature profile at the cooling roll 8 reached according to the present invention. Since there is no flow of coolant in the funnel-shaped flow areas Placing flow obstacles in the way can result in an even flow and a suitable heat transfer can be achieved.

Claims (16)

  1. Cylindre réfrigérant avec une première et une deuxième faces frontales (9, 10), sachant que dans la première face frontale est intégrée une amenée (13) pour un fluide de réfrigération, et que dans la deuxième face frontale est intégrée une évacuation (14) pour le fluide de réfrigération, et avec une conduite d'alimentation centrale (12, 15) comprenant une pluralité d'ouvertures d'amenée (16.3 à 24.3),
    caractérisé en ce que
    l'intérieur du cylindre réfrigérant présente des zones de mélange (16.1 à 24.1) voisines, s'étendant en direction axiale du cylindre, qui sont respectivement en fluide de réfrigération, par l'intermédiaire d'une ouverture d'amenée (16.3 à 24.3) de la conduite d'alimentation centrale (12, 15) et par l'intermédiaire d'une zone de mélange (16.1 à 24.1) amont, sachant que le fluide de réfrigération s'écoule en direction axiale, au moins sur l'étendue axiale d'une zone de mélange, le long la face intérieure de la surface du cylindre réfrigérant, de son amenée vers son évacuation.
  2. Cylindre réfrigérant selon la revendication 1,
    caractérisé en ce que
    la section transversale des ouvertures d'amenée (16.3 à 24.3) va en augmentant sur la largeur du cylindre réfrigérant (8).
  3. Cylindre réfrigérant selon la revendication 1 ou 2,
    caractérisé en ce que
    la conduite d'alimentation centrale (12, 15) est fixée sur la première face frontale (9) du cylindre réfrigérant (8).
  4. Cylindre réfrigérant selon l'une ou plusieurs des revendications précédentes,
    caractérisé en ce que
    la conduite d'alimentation centrale (15) est de forme conique.
  5. Cylindre réfrigérant selon la revendication 4,
    caractérisé en ce qu'une zone d'écoulement en forme d'entonnoir est formée entre la surface du cylindre réfrigérant (8) et la conduite d'alimentation centrale (15) conique.
  6. Cylindre réfrigérant selon la revendication 4 ou 5,
    caractérisé en ce que
    l'extrémité de cône, allant en s'effilant, de la conduite d'alimentation centrale (15) est tournée vers l'extrémité (14) située côté évacuation du cylindre réfrigérant (8).
  7. Cylindre réfrigérant selon l'une ou plusieurs des revendications 1 à 3,
    caractérisé en ce que
    la section transversale de la conduits d'alimentation centrale (12) reste constante sur la largeur du cylindre réfrigérant (8).
  8. Cylindre réfrigérant selon la revendication 7,
    caractérisé en ce que
    des parois de séparation, isolant les unes des autres les zones de mélange (16.1 à 24.1), sont fixées sur la conduite d'alimentation centrale (12).
  9. Cylindre réfrigérant selon la revendication 8,
    caractérisé en ce que
    les parois isolantes sont en forme d'anneau.
  10. Cylindre réfrigérant selon la revendication 8,
    caractérisé en ce que
    les parois isolantes sont en forme de disque circulaire.
  11. Cylindre réfrigérant selon la revendication 9 ou 10,
    caractérisé en ce que
    les parois isolantes présentant des ouvertures de déversement pour chaque écoulement de fluide de réfrigération (16.2 à 24.2) résultant, entre les zones de mélange (16.1 et 24.1).
  12. Cylindre réfrigérant selon la revendication 11,
    caractérisé en ce que
    les sections transversales des ouvertures de déversement entre les zones de mélange (13.1 à 16.4) vont en augmentant sur la largeur du cylindre réfrigérant (8).
  13. Cylindre réfrigérant selon l'une ou plusieurs des revendications précédentes,
    caractérisé en ce qu'
    un flux de fluide de réfrigération (16.4 à 24.4) frais, dans chacune des zones de mélange (16.1 à 24.1), augmente de façon proportionnelle à un flux de fluide de réfrigération résultant, issu des zones de mélange (16.1 à 23.1) précédentes, en direction de la zone de mélange (16.1 à 24.1) respective.
  14. Cylindre réfrigérant selon l'une ou plusieurs des revendications précédentes,
    caractérisé en ce que
    le rapport des flux de fluide de réfrigération du fluide de réfrigération frais, amené par les ouvertutes d'amenée(16.3 à 24.3) de la conduite d'alimentation centrale (12, 15), du flux de fluide de réfrigération résultant, issu des zones de mélange (16.1 à 24.1) amont, reste constant sur la largeur du cylindre réfrigérant (8).
  15. Banc à cylindres réfrigérants, comportant une pluralité de cylindres réfrigérants,
    caractérisé par au moins un cylindre réfrigérant (8) selon l'une ou plusieurs des revendications précédentes.
  16. Machine à imprimer rotative,
    caractérisée par au moins un cylindre réfrigérant (8) selon l'une ou plusieurs des revendications 1 à 14, ou bien un banc à cylindres réfrigérants selon la revendication 15.
EP99102756A 1998-03-20 1999-02-22 Cylindre réfrigérant Expired - Lifetime EP0943435B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19812149 1998-03-20
DE19812149A DE19812149A1 (de) 1998-03-20 1998-03-20 Kühlwalze

Publications (2)

Publication Number Publication Date
EP0943435A1 EP0943435A1 (fr) 1999-09-22
EP0943435B1 true EP0943435B1 (fr) 2003-02-05

Family

ID=7861594

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99102756A Expired - Lifetime EP0943435B1 (fr) 1998-03-20 1999-02-22 Cylindre réfrigérant

Country Status (3)

Country Link
US (1) US6220161B1 (fr)
EP (1) EP0943435B1 (fr)
DE (2) DE19812149A1 (fr)

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US6606948B1 (en) * 2002-03-11 2003-08-19 Heidelberger Druckmaschinen Ag Method for controlling a chill roll system
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DE10353288B4 (de) * 2003-11-14 2011-01-05 Shw Casting Technologies Gmbh Temperierbare Walze
EP1795347A3 (fr) 2005-10-28 2010-10-27 Koenig & Bauer Aktiengesellschaft Support pour cylindre de refroidissement et méthode pour refroidir une bande de papier guidée dans ce support
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JP4657096B2 (ja) * 2005-12-21 2011-03-23 トクデン株式会社 熱媒体通流ローラ装置
JP5691215B2 (ja) * 2010-03-26 2015-04-01 住友ベークライト株式会社 粉砕装置
US9498992B2 (en) * 2014-12-09 2016-11-22 Panasonic Intellectual Property Management Co., Ltd. Sheet material cooling device and printer including the same
CN105644141A (zh) * 2016-01-20 2016-06-08 胡和萍 一种印刷纸传动用冷却辊
CN106766571A (zh) * 2016-11-18 2017-05-31 无锡祁龙胶粘制品有限公司 一种用于保护膜加工的高效冷却装置
CN116043461B (zh) * 2023-04-03 2023-09-01 山东广泰环保科技有限公司 一种冷却辊及印染设备

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Also Published As

Publication number Publication date
DE19812149A1 (de) 1999-09-23
EP0943435A1 (fr) 1999-09-22
DE59904202D1 (de) 2003-03-13
US6220161B1 (en) 2001-04-24

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