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Infrared industrial tunnels with a vertical heating chamber - EUROLINIA EIT-V
Infrared tunnels with a vertical heating chamber, EIT-V, are one of the most much-in-demand devices for infrared heat treatment of materials in various industries. We are talking about the processing and vulcanization of cables, various silicone profiles, coating extruded products, heating containers with liquid, etc.
EIT-V is comprised of rectangular housing with an opening lid. The housing and the lid have reflecting panels with ICH ceramic infrared emitters. When assembled and the lid is closed these emitters form a round IR tunnel heater with a circle shape (heating chamber). The diameter may vary depending on the type of material being processed.
EIT-V uses special ICH ceramic emitters with concave spherical radiating surfaces as a source of infrared radiation. IR emitters are electrical heating resistor units that generate infrared radiation when the ceramic radiating surface is heated by absorbing thermal energy from the heated electrical spiral that is installed inside the ceramic casing. IR emitters are installed inside the EIT-V infrared reflector made from polished high-alloy material (stainless steel). Emitters of this design are arranged around the circumference of the EIT-V housing to generate the focused infrared beam radiation having a power density of up to 35 kW/m2 at a distance of 40-60 mm flatwise from the emitting surface and the effective IR wavelength within the range of 1.5 to 8.5 µm, as general. The circumferential arrangement of emitters produces a specific overlap of infrared rays along the surface of the tubular material to generate the IR heating field with uniform intensity.
When the voltage is applied to the ceramic IR emitters, they start to heat up. The heating continues until the set temperature of the radiating surface (400-600°С usually) is reached. The process is controlled by the signal from the thermal sensor, which is installed inside the middle IR emitter of each heating zone. When the set temperature is reached the temperature meter maintains the specified emitters' temperature following the designed logic. The generated rays of infrared radiation are focused along the spherical surface of the emitters and directed to the surface of the heated material in the center of the chamber. IR radiation flow from adjacent emitters has a specific overlap on the surface of the material generating the IR heating field with uniform intensity.
There are many advantages in using EIT-V infrared industrial tunnels:
They are highly efficient, as infrared radiation provides quick and even heating of the material's surface with the precise dosage of radiation while consuming about 30% less power than convection systems.
EIT-V IR tunnels, as well as other types of tunnels manufactured by EUROLINIA, can work almost forever since the only thing that may need to be replaced over time is the heating elements themselves installed inside. These ceramic elements (ICH) produced in-house are very affordable and easy to install if replacement is needed.
Vertical tunnels have a compact design, to reduce the cost of the production premises. They also do not require significant maintenance and cleaning costs. They have a simple design, easy to install and maintain during the operations.
The main advantage of this type of tunnel is the vertical arrangement of the infrared chamber, which avoids the sagging of the material when it is moving inside the heating chamber. This is perhaps the main reason why clients choose a vertical rather than a horizontal IR tunnel.
Besides, such tunnels can have different temperature zones for precise dosing of IR radiation to provide uniform heating of the material along the height and width. The temperature could be set manually or automatically, depending on the selected model. When automatic control is selected, the automation logic fully controls the operation and maintains the set temperatures. It can also shut down the tunnel and the whole production line in case of overheating or other emergencies.
High-precision heating control
Dividing the total heating surface into zones along with the height and perimeter of the heating chamber allows achieving a high-precision control of the infrared heating. Using the separate automatic control for each heating zone, you can configure the VIT tunnel for uniform surface heating of various size products that move at a different speed.
The temperature of emitters (infrared heating power) of each zone and the control parameters are set manually from the control unit panel or a remote computer via the built-in RS-485 interface. The accuracy of the maintained temperature is ±1.5 °C, and the operating temperature of ceramic emitters is 600-750 °C.
Vertical infrared tunnel oven operation is monitored visually using the control panel or a remote computer. The operating software allows you to:
When choosing an EIT-V infrared tunnel, the following factors must be considered:
Summing up, it can be said without prejudice that EIT-V infrared tunnels with a vertical heating chamber are the optimal solution for the heat treatment of materials in a wide variety of industries. The choice of a specific model depends on the requirements for performance, temperature conditions, control logic, and materials. EIT-V IR tunnels will reduce the cost of production premises, maintenance, and electricity, and increase the efficiency of material processing.
Please contact us with you technological task, EUROLINIA specialists will offer the proper and most effective IR configuration for your specific production process.
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