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VTU & VTL Range

Vötsch Heating and Drying Ovens for production and research are found in various branches of industry, including electronics, automobile production, plastics, metal working, the chemical and pharmaceutical sectors and many other Product Image (Main)areas.

Vötsch Industrietechnik have proven once again that even perfected and reliable products can be further developed to reach a greater standard of perfection.

The new generation of units is available in 7 model sizes and can be supplied with a working chamber of between 200 and 8000 litres and nominal temperatures of 250 °C, 300 °C and 350 °C. These robust drying ovens are suitable for variety of heating and drying processes in production and research.

The reliable modular construction and the extensive range of accessories available allow them to be employed for a variety of applications. Modern control and monitoring systems, in conjunction with software specially developed for these units, offer the possibility of linking up to 32 devices, if desired, and simultaneously controlling, monitoring and documenting there production results with a PC.

Drying combustible solvents

Processes which involve drying of surface coatings, mould and impregnated resin varnishes can lead to the air being enriched by released substances (e. g. solvents), forming an explosive compound. If a source of combustion is present at the same time it can lead to an explosion.

Play it safe at all times

The VTL series from Vötsch Industrietechnik enables you to safely control these heating and drying processes by limiting the quantity of solvent involved. The chamber drying ovens VTL comply with the extented safety requirements of EN 1539.

A circulating air fan with an improved performance ensures that a thorough mixture is achieved, thus preventing enrichment through solvent concentrations. A defined volume of hot air is continually conveyed outwards through the exhaust air fan and replaced with fresh air (dilution principle), thus preventing the formation of potentially explosive compounds.

To enable efficient operation to be achieved, the exhaust air can be reduced to 25 % by switching off the exhaust fan when the main evaporation is completed. The circulation and exhaust air volumes are monitored. Flow monitors switch off the heating immediately and permanently in the case of malfunctions (at a level lower than the required volume flow).

All the terminal connections of the individual components are caulkwelded in the inner casing to prevent the ingress of solvents into the thermal insulation and the resulting enrichment. The permissible quantity of combustible substances depends mainly on the field of application of the drying oven. There are different technical safety devices.

The advantages of flexible solutions

Process characteristics:

  • Short process duration due to high volume of circulating air
  • Short recovery time due to automatic switch-off of heating and circulating air fan when door is opened
  • Homogenous temperature distribution, thanks to directed air ductwork
  • Application-orientated air ductwork, both horizontal (standard) and vertical (optional)

Production characteristics:

  • Economical and environmentally friendly, thanks to the enhanced thermal insulation
  • Optimum thermal separation of inner and outer casing
  • Minimum loss of energy and effective operator protection when coating, thanks to the heating and circulating fan being switched off

A high degree of safety:

  • Low external wall temperatures
  • Standard temperature selection limiter (for VTL)
  • “Cold” heating connection
  • Service and maintenance friendly
  • All heating and drying ovens naturally comply with EMC guidelines

 

For heat treatment of material used by the aerospace and defence industries, Vötsch Industrietechnik offers the appropriate ovens which fulfil the requirements of the standard AMS 2750 D.

The standard equipment:

  • Nominal temperatures: 250/300/350 °C
  • Outer casing made of galvanised sheet steel, coated with RAL shade 9002 (grey-white)
  • Corrosion-resistant inner casing made of aluminised sheet steel
  • Low external wall temperature and minimal loss of energy due to high quality, generously dimensioned thermal insulation grid rails in working chamber, facilitating height adjustment of wire-mesh shelves and grates
  • The temperature-resistant door gasket is easily exchanged
  • Door of walk-in units can be opened from inside (from model size 75/100)
  • Safety temperature limiter (protects unit)
  • Microprocessor-based temperature control with solid state relays ensure minimal control fluctuations
  • Control panel with additional display and control elements which can be upgraded, thanks to its modular construction
  • Exemplary air ducting system which enables an incredibly even temperature distribution to be achieved, even with a fresh air supply. The air in the working chamber is mixed in this system with fresh air sucked in via a heating register, mixed by the circulating air fan and conveyed once more to the working chamber
  • Air exchange via air intake and exhaust flanges

 

  • Push through design (from model size 75/100 on)
  • Vertical air flow
  • Shutter wall (from model size 75/100 on)
  • Fresh air filter
  • Circulating air filter
  • Exhaust air fan (standard with VTL)
  • Door window
  • Electrical door lock (only with VTU)
  • Caulk-welded inner casing (standard with VTL)
  • Recessed floor rails
  • Folding ramp (from model size 75/100 on)
  • Flashing alarm light
  • Tubular leadthroughs

For specifications of the VTU & VTL range, please download our PDF brochure. Alternatively, email Weiss Gallenkamp at enquiries@weiss-gallenkamp.com.