Thermoelectric Cooling Roller (단종제품)

Thermoelectric Cooling Roller

Photo:Thermoelectric Cooling Roller
  • Thermoelectric cooling roller without using any water
  • Significant reduction of periodical maintenance time of cooling system

  • Significant reduction of start up time for cooling system by high response speed characteristic of thermoelectric device

What is Thermoelectric Cooling Roller

In a general way, commercial printing machine raise the temperature to about 100℃ by heater in order to dry the ink on the paper. Then they get down the temperature to about 25℃ (room temperature) in order to firm the printing quality. (When the printing is done on the heated paper with high temperature, inhomogeneous printing quality will occur. To avoid this problem, the cooling roller (water cooling system) is needed to get down the paper temperature to room temperature.

commercial printing machine

Subjects about current water-cooled system roller

  1. Corrode (=malfunction) of inside parts by water leakage
  2. Disposal for refrigerant water after the periodical maintenance
    (= disposal by specific company)

    *Refrigerant water contains the following material.
    ①antiseptic substance
    ②antifreeze liquid
    ⇒Disposal handling is very bother after exchange to new one.

  3. Arranged pips are needed in accordance with number of roller
    (=Securement of wide space)
  4. Dew drop at start-up and shutoff makes poor printing quality / ripped paper.

    Dew condensation image

    ⇒Dew drop comes out in about 15 minutes
    on the current water cooling system.

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Thermoelectric device cooling roller

The product equipped with thermoelectric device can quickly cool the printing paper without using any water.

Thermoelectric device cooling roller

  • No corrode of inside parts by water leakage
  • Significant reduction of periodical maintenance time
  • Compact and simple cooling system
  • Significant reduction of start-up time for cooling by quick response with thermoelectric device
Basic specifications
Item Specifications
1 Cooling type Thermoelectric(needs cooling fan)
2 Cooling area Roller diameter 150mm x width 300mm
3 Dimensions(max.) Diameter 200mm x length 550mm
4 Weight About 13kg
5 Cooling capability 400W max./roller (rotation speed:75m/min)
6 Wattage 450W max.(includes the wattage of cooling fan)
7 Power supply method DC60V max. applied using slip ring

* Item 2, 3, 4, 6 can be changed to meet customer request.

No corrode of inside parts by water leakage

No corrode of inside parts due to thermoelectric device cooling system roller without using any water.

No corrode of inside parts  due to thermoelectric device cooling system roller without using any water.

Significant reduction of periodical maintenance time

No need for periodical exchange of water, disposal of waste liquid and cleaning for roller / cooling chiller / arranged pipes
Significant reduction of maintenance time compared with water-cooled system
(6 days X 8 hours ⇒ 1 day X 0.5 hours)

  • Before
    • Periodical exchange of water
    • Disposal of waste liquid
      • antiseptic substance
      • antifreeze liquid
    • Cleaning
      • roller
      • cooling chiller
      • Cleaning the inside of arranged pipes
  • After
  • snapring

Compact and simple cooling system

Industry first thermoelectric device cooling roller without using any water. This technology has made compact cooling system and solved the limitation of space for commercial printing machine. (No need of cooling chiller and arranged pips for water cooling system) (Reduction of installation space by 40%)

Reduction of placement space by 40% image

Significant reduction of start-up time for cooling by quick response with thermoelectric device

The quick cooling is available with moving heat of roller surface to inside roller by clamp construction of thermoelectric device between cooling plate and heatsink. Cooling time is reduced to 1/6. (30 minutes ⇒ 5 minutes)

Significant reduction of start-up time for cooling by quick response with thermoelectric device

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Development technology

  • High density of
    thermoelectric device elements
  • Precision machining process of
    thermoelectric elements
     
  • Precision machining process
    for thermoelectric elements
    (against current device: 1/4 cubic volume)
    *2mm square×1mm(t)⇒1mm square ×1mm(t)

    ⇒Comparison for density of elements per unit area
    ・Current device: 16 elements / cm2
    ・High density device: 28 elements / cm2
    (about two times)

    Cooling speed will be
    about twice fast

  • Countermeasure for inhomogeneous
    surface temperature of roller in cooling
  • Optimized parts design
    (cooling plate, shape of heatsink)
    by thermal analysis
    1. Cooling plate
      (Hog-backed shape)

      →same as inside shape of roller

      Hog-backed shapeimage

    2. Heatsink for radiation
      (angular shape)

      →Pursuit of efficient radiation on rolling

      angular shape image

    Inhomogeneous surface temperature of roller in cooling
    within ±1℃(working area)

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Expansion of application

    • Food industry
    • ・Cooling drum
      Cooling for candy / chocolate
      ・Kneading machine
      kneading machine with temperature controller
      for UDON(Japanese wheat noodle) / Soba (Buckwheat noodle)
    • Rubber process industry
    • ・Cooling roller
      Rubber sheet, Heating or cooling for process of leather sheet
    • Printing industry / Photograph industry
    • Cooling unit for UV irradiator

      Cooling unit for UV irradiator

    • Medical industry
    • Cooling plate

      Cooling plate

    • Automotive industry
    • Portable air conditioner

      Portable air conditioner

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