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Oil-/air-cooling units

 

Öl-/Luftkühler

Okan

Funke has a comprehensive standard range in the oil/air cooler sector, which covers numerous mobile and stationary applications.

This includes, in the first instance, the Okan 2.79 cooler series, which can be adapted to suit a wide range of customer requirements due to its modular design. For example, special designs are available for marine and offshore applications, or for installation in areas where there is a high risk of explosion.

The Okan E series is also available. The Okan E series oil/air coolers have been specially developed for standard applications in the industrial hydraulics sector which do not impose any special requirements on the design of the oil/air cooler.

In addition to extensive documentation, 3D models of all oil/air coolers are included as step files.

Design and function

The basic element is an aluminium cooler in bar and plate construction, as shown below. The oil tubes are fitted with turbulence elements to guarantee optimum heat transfer.

The fan mounted behind the cooler operates as suction in standard mode. The slat shape, fan blades and motor power are aerodynamically and thermodynamically coordinated to achieve a high degree of heat dissipation.

Design

Design of a
oil-/air-cooling unit
  1. Cooler
  2. Support brackets
  3. Fan guard
  4. Three-phase motor
  5. Fan cover
  6. High-performance fan
  7. SAE counterflange
 

Cross section


Cross section of a
oil-/air-cooling unit
  1. Tank
  2. Turbulence elements
  3. Air slats
  4. Side wall
 

OKAN II (Längerer & Reich system)

OKAN II (Längerer & Reich system)

OKAN E

OKAN E

Applications

  • Cooling of oils, hydraulic fluids and emulsions using
    ambient air, particularly in the field of mechanical and
    plant engineering, construction machinery and special
    vehicle manufacturing
  • Used as an additional cooler at peak load times (summer) – wherever water is not available or piping is too expensive

 

Advantages

  • effectively low costs per kW heat dissipation
  • sturdy, compact design with high standards of quality
  • wide range of accessories and combinations available
  • customer-specific designs possible
  • low costs for installation
  • variable installation position
  • maximum available over a long service life
  • virtually maintenance-free

Okan 2.79

Operating data

13 sizes (see tables below)

  • max. cooling capacity: approx. 6.2 kW/K
  • max. operating temperature: for oil 100°C for emulsion 90°C
  • max. operating pressure, static: 16 bar (size 15 to 10 bar)
  • ambient temperatures: -20°C to +40°C
  • cooling surfaces: 0.05 to 1.44m²
  • fan drives: three-phase motor, direct current motor, hydro motor
  • available up to size 10 in 1-way and 3-way versions

 

Size   02 03 04 05 06 07 08 09 10 11 13 14 15
Cooler core (m²)   0.050 0.080 0.100 0.160 0.200 0.250 0.315 0.400 0.500 0.600 0.800 1.000 1.440
Weight ≈ (kg)   16 23 25 35 38 46 51 68 78 138 177 189 300
Dimensions ≈ (mm) Width 295 350 350 455 455 550 550 660 820 820 970 970 1286
  Height 380 440 510 610 710 720 850 850 870 1020 1170 1360 1520
  Depth 425 470 470 540 540 575 575 635 635 710 810 810 800
Noise level 1m/7m (dB(A)) 750 min-1 - - - 57/45 58/46 62/50 66/54 75/63 74/62 76/64 79/67 79/67 88/76
  1000 min-1 - 59/47 59/47 64/52 65/53 70/58 72/60 80/68 80/68 82/70 85/73 86/74 95/83
  1500 min-1 61/49 70/58 70/58 75/63 75/63 82/70 81/69 90/78 91/79 92/80 92/80 95/83 99/87
  3000 min-1 79/67 84/72 84/72 - - - - - - - - - -

Okan E

Operating data

7 sizes (see table below)

  • max. cooling capacity: approx. 1.9 kW/K
  • max. operating temperature: for oil 100°C for emulsion 90°C
  • max. operating pressure, static: 26 bar
  • ambient temperatures: -20°C to +40°C
  • cooling surfaces: 0.08 to 0.5m²
  • fan drives: three-phase motor
  • additional connections for monitoring temperature and pressure

 

Size   02 03 04 05 06 07 08
Cooler core (m²)   0,08 0,15 0,15 0,22 0,35 0,43 0,50
Weight ≈ (kg)   24 27 28 42 51 56 100
Dimensions ≈ (mm) Width 357 446 446 470 607 607 725
  Height 420 520 520 690 790 940 960
  Depth 391 460 460 501 506 506 615
Noise level 1m/7m (dB(A)) 750 min-1 - - - - - - 70/58
  1000 min-1 - 63/51 62/50 61/49 68/56 68/56 74/62
  1500 min-1 62/50 71/59 70/58 70/58 78/66 77/65 83/71
  3000 min-1 80/68 - - - - - -

Optional equipment

  • Complete system incl. temperature control and pump
  • Explosion-proof design
  • Sea air-resistant surface protection
  • Air filter for cooler core
  •  

Data required to prepare offer

  • Heat dissipation (kW)
  • Oil flow
  • Oil inlet temperature
  • Ambient temperature
  • Max. permissible noise level
  • Motor type/voltage/frequency

 

Downloads

Brochure Oil-/Air-Cooling Units

Brochure Oil-/Air-Cooling Units

Datasheet OKAN 2

Datasheet OKAN 2

Contact

Jörg Hinz

Jörg Hinz

Manager Standard Industry Products (SIP)
Sales & Thermal Design

FUNKE Wärmeaustauscher Apparatebau GmbH

Zur Dessel 1
31028 Gronau/Leine
Germany


T +49 (0) 51 82 / 582-40
F +49 (0) 51 82 / 582-87

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