EP2055477A1 - Echangeur thermique pour pièces d'une imprimante - Google Patents

Echangeur thermique pour pièces d'une imprimante Download PDF

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Publication number
EP2055477A1
EP2055477A1 EP08019122A EP08019122A EP2055477A1 EP 2055477 A1 EP2055477 A1 EP 2055477A1 EP 08019122 A EP08019122 A EP 08019122A EP 08019122 A EP08019122 A EP 08019122A EP 2055477 A1 EP2055477 A1 EP 2055477A1
Authority
EP
European Patent Office
Prior art keywords
temperature control
free
control unit
temperature
cooler
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.)
Withdrawn
Application number
EP08019122A
Other languages
German (de)
English (en)
Inventor
Dietger Dr. Hesekamp
Martin Prummer
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.)
Technotrans SE
Original Assignee
Technotrans SE
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 Technotrans SE filed Critical Technotrans SE
Publication of EP2055477A1 publication Critical patent/EP2055477A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/22—Means for cooling or heating forme or impression cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/32—Ducts, containers, or like supply devices for liquids

Definitions

  • the invention relates to an arrangement on a printing press with a process-temperature-tempering device and a free-cooler temperature-control device.
  • heat is generated on various components of the printing press.
  • this also applies to the operating means, e.g. the process agents used in offset printing, such as fountain solution and detergent, which are often fed, discharged, processed and reused via a circulatory system.
  • the resources of the printing press are preferably used at a certain temperature for use. If the operating temperature is above a certain value, this can lead to a deterioration of the print quality.
  • dampening agents When using dampening agents is added that they can contain a significant proportion of alcohol, which can undesirably evaporate quickly at high temperatures.
  • the composition of the fountain solution can therefore change at too high a temperature so that it comes to lie outside of a predetermined target range.
  • Printing presses are therefore often equipped with temperature control. These can be used both for the temperature control of the process agent and for the temperature control of the functionally essential parts of the printing press, in particular the printing cylinder. Tempering will usually mean cooling, but is also quite a heating into consideration, for example, in the start-up phase of a printing press.
  • free-cooler temperature control device a device that exploits approximately the temperature of the ambient air.
  • the present invention has for its object to provide an arrangement on a printing machine, which allows to avoid unnecessary energy costs, the arrangement is inexpensive to manufacture and operate.
  • One aspect of the invention relates to an arrangement on a printing machine having a process-temperature control device, at least one process-line line connecting the process-temperature control device and the printing press, and a free-cooler temperature control device provided in addition to the process-temperature control device, wherein the free-cooler temperature control device is provided in the process-control line such that it flows through the process agent to be cooled.
  • Process fluids are any fluids that are supplied to the operation of printing presses and / or circulated in the printing presses, in particular dampening solution, gear oil and / or other fluids which are used for cooling certain components.
  • process agent is not a temperature control, such as the refrigerant usually used in refrigerators (eg R 407c, R143a, R410a), meant to be provided in a separate Temperierstoffnikank is used, which is used for cooling a process agent.
  • free-cooler temperature control device is meant a device which exploits approximately the temperature of the ambient air in order to cool the process agent.
  • a free-cooler temperature control unit can be operated at low cost and, if the free-cooler temperature control unit flows through directly by the process medium, the efficiency of the temperature control is improved. If a sufficient temperature difference between the ambient air and the process medium temperature is given, the intended temperature control can under certain circumstances be achieved alone or at least largely by utilizing the outside temperature.
  • the term process-temperature-tempering device designates a conventional process-temperature-tempering device, which as a rule can be provided as a peripheral device of a printing press.
  • Such a process-tempering device can be provided, for example, in the form of a dampening solution preparation system.
  • Such a fountain solution treatment plant may comprise a dampening solution tank and / or a compressor-operated cooling device and / or a number of other components.
  • the freecooler temperature control unit can be designed as a section of the process medium line.
  • the connection of the freecooler temperature control unit accordingly takes place in such a way that the fluid flow between the printing machine and the process temperature control unit can be conducted completely through the freecooler temperature control unit.
  • the process medium line is a return line is, which runs from the printing press to the process agent tempering device. It is particularly preferred if the return line is part of a process fluid circuit. In the return line of a circuit, the temperature of the process medium is usually highest, so that a good tempering performance can be achieved here. It is also conceivable, however, that the process-fluid line from the process-temperature-tempering device leads to the printing press and is not part of a cycle.
  • the arrangement further comprises a blowing device, which is arranged such that the free-cooler temperature control device can be flowed with an air flow.
  • a blowing device which is arranged such that the free-cooler temperature control device can be flowed with an air flow.
  • Also considered advantageous is an arrangement in which the free-cooler temperature control is deactivated when the temperature of the process fluid in the portion of the process fluid line leading from the press to the free cooler temperature control unit is lower than the air temperature of the air, which for cooling the Freecooler temperature control unit is used.
  • a preferred embodiment of such an arrangement further comprises a valve, via which a process medium flow into the freecooler temperature control unit or the bypass line can be introduced or distributed to the freecooler temperature control unit and the bypass line.
  • an arrangement is further preferred, which further comprises a first temperature sensor, which is designed and arranged such that the process temperature is detectable via the first temperature sensor, wherein the valve and / or the blowing device in dependence of the detected Processant temperature controllable and / or regulated.
  • an arrangement which further comprises a second temperature sensor which is designed and arranged such that via the second temperature sensor, the air temperature can be detected, which is used for temperature control of the freecooler temperature control, wherein the valve and / or the blowing device in dependence detected air temperature is controllable and / or regulated.
  • a further preferred embodiment is directed to an arrangement in which the free-cooler temperature control is arranged in a room of a building in which the printing press is set up.
  • the freecooler temperature control unit is arranged outside a building in which the printing press is set up.
  • the embodiments described as being preferred in relation to the first aspect of the invention are also considered to be preferred.
  • This aspect is especially advantageous if the temperature difference between the ambient air and the process medium temperature is sufficiently high at any conceivable operating time of the printing machine.
  • the intended temperature control can be achieved solely by utilizing the outside temperature. This is particularly the case in areas where there is a sufficiently low outdoor temperature throughout the year, or when the process fluid temperatures to which the process agent is to be cooled are sufficiently high.
  • FIG. 1 a printing machine 1 is shown, to which a Prozeßffentemperiervoriques 2 is connected in or via a process means 7, which has a flow and a return and which serves for controlling the temperature of the process means in a manner not shown.
  • a second connection between the printing press 1 and the process-temperature control device 2 has a process-medium circuit 3, which likewise comprises a feed line 6 and a process-line line 5 designed as a return line and serves for cooling the process medium.
  • the fluids which flow through the process center circuit 7 and the process fluid circuit 3 cool different components of the printing press 1.
  • different fluids are used in the process medium circuit 7 and the process fluid circuit 3.
  • a free-cooler temperature control unit 4 is also provided.
  • free-cooler temperature control unit 4 is meant in relation to the described embodiments, a device that uses only the ambient air to cool the processing means.
  • the freecooler temperature control unit 4 may preferably comprise an air-process medium heat exchanger, e.g. in the form of an air cooler. It may be sufficient if the heat exchanger is a passive convection heat exchanger. It is also conceivable that ambient air or other gases, such as e.g. Compressed air, to be actively blown on cooling elements of the heat exchanger.
  • This process agent chamber is part of the process fluid circuit 3, which is flowed through directly by coming from the printing press process agent, which is then forwarded to an additional Prozeßstofftemperiervorraum 2.
  • control unit 46 determines the temperature difference between the air temperature and the process temperature by two temperature sensors 44, 45 and the blower 41 in response to this temperature difference (on / off and / or speed).
  • a bypass line 43 is provided in which in addition to the blowing device 41.
  • the process medium may be partially or completely passed through the bypass line, for example when the process temperature is above the air temperature.
  • a valve 42 is provided which can be controlled via the control unit 46.
  • the valve 42 may be configured, for example, as a proportional valve, so that the amount of the volume flow is adjustable, or eg as a three-way valve, so that a pure switching function is given.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP08019122A 2007-10-31 2008-10-31 Echangeur thermique pour pièces d'une imprimante Withdrawn EP2055477A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710052145 DE102007052145A1 (de) 2007-10-31 2007-10-31 Wärmetauscher für Teile einer Druckmaschine

Publications (1)

Publication Number Publication Date
EP2055477A1 true EP2055477A1 (fr) 2009-05-06

Family

ID=40210757

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08019122A Withdrawn EP2055477A1 (fr) 2007-10-31 2008-10-31 Echangeur thermique pour pièces d'une imprimante

Country Status (2)

Country Link
EP (1) EP2055477A1 (fr)
DE (1) DE102007052145A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0638418A1 (fr) * 1993-08-10 1995-02-15 Baldwin-Gegenheimer GmbH Système de refroidissement pour cylindres de machines d'impression
DE29520464U1 (de) * 1995-12-22 1996-02-22 Technotrans GmbH, 48336 Sassenberg Anordnung zur Temperierung eines Feuchtmittels und/oder ausgewählter Walzen einer Druckmaschine
JP2000318124A (ja) * 1999-05-07 2000-11-21 Offset Printing System Kk オフセット印刷機用冷水製造装置
DE102005005303A1 (de) * 2005-01-05 2006-07-13 Koenig & Bauer Ag Systeme zur Temperierung von Bauteilen einer Druckmaschine
DE102005015954A1 (de) 2005-04-07 2006-10-12 Technotrans Ag Druckmaschine mit Temperiervorrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH655690B (fr) * 1982-05-19 1986-05-15
DE10316860A1 (de) * 2003-04-11 2004-10-21 Rainer Olbert Kühl- und Temperieranlage für eine Druckmaschine
DE10354454B4 (de) * 2003-11-21 2009-11-26 Technotrans Ag Temperiervorrichtung für Druckmaschinen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0638418A1 (fr) * 1993-08-10 1995-02-15 Baldwin-Gegenheimer GmbH Système de refroidissement pour cylindres de machines d'impression
DE29520464U1 (de) * 1995-12-22 1996-02-22 Technotrans GmbH, 48336 Sassenberg Anordnung zur Temperierung eines Feuchtmittels und/oder ausgewählter Walzen einer Druckmaschine
JP2000318124A (ja) * 1999-05-07 2000-11-21 Offset Printing System Kk オフセット印刷機用冷水製造装置
DE102005005303A1 (de) * 2005-01-05 2006-07-13 Koenig & Bauer Ag Systeme zur Temperierung von Bauteilen einer Druckmaschine
DE102005015954A1 (de) 2005-04-07 2006-10-12 Technotrans Ag Druckmaschine mit Temperiervorrichtung

Also Published As

Publication number Publication date
DE102007052145A1 (de) 2009-05-14

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