Enclosed Hoods
Enclosed hoods represent the synthesis of 30 years of experience.
They find their applications on multi-cylinders paper machines where energy saving, sound insulation maintenance functionality and duration life are vey important.
Built with large use of anti-corrosion materials, they combine sealing efficiency with disassembling easiness.
Every project is carefully designed by our technical staff, composed of engineers with a wide experience, taking in consideration the type of paper machine, confronting ourselves with the customer and the paper machine builder to obtain a perfect integration.
Thermal efficiency of our hoods represents a strong point of this product, placing it on the top of quality standards.
The excellence is always confirmed by the high energetic performance of all our installations.
The hood frame is optimized to integrate all ventilation systems required also on the up-to-date machines with single fabrics.
There are no obstructions on paper machine level, so to completely clear the access when doors are lifted.
External panels are designed to allow to easily montage and dismantling of fabrics and rolls passing through dedicated passages.
The hood frame of Lario Energy is mainly composed of heated tubular bars to prevent condensation.
The great modularity of the hood allows to insert accesses for walkways, passages for components pulling out and mobile panels for maintenance.
Every components of hood frame is realized with proper material in order to prevent corrosion: stainless steel and aluminium are largely used.
Moist air extraction systems and air handling systems for stabilizers and pocket ventilation are perfectly integrated into the hood frame.
In this way it is possible to reduce the number of components and to optimize internal space.
Control of air flows inside the hood is carefully studied to allow paper evaporation always in the best conditions.
It is possible to differently manage regulation of air flows so to control easily every variation of evaporating load on drying section of paper machine.
The inlet warm air duct is an integrated part of the hood frame.
The suction false ceiling, equipped by regulating dampers, is perfectly inserted into the roof thickness.
Thermo-acoustic insulation is studied to eliminate or minimize thermal transitions, by assuring ,in the meantime, a simple disassembling of panels.
On side panels, thermal transitions have been reduced of 80% respect to a traditional hood.
The perfect integration of suction false ceiling into the roof completely eliminates the possibility of thermal losses.
Automatic control of dew-point prevents every air leakage from hood.
Thanks to this level of insulation respect to the external environment it is possible to maintain inside the hood the best thermal and hygrometric conditions.
In this way it is possible a drastic reduction of energy consumption and of flows of inlet and outlet air. Moreover, it is possible to have a quick economic return of the investment.
All panels we use are provided of certifications for fire resistance and thermal and acoustic performance.
The accessibility to the paper machine is very important for our customers. Thanks to our hood we can offer different solutions:
- Lifting doors with large windows on drive side: the doors, when lifted, completely open the machine level.
- Doors on heads of machine for walkways, with different levels of thermal performance and safety barrage for the operators.
- Sliding doors on transmission side to reduce obstructions and to clear working areas.
- Doors for pulling out fabrics and rolls, freely configurable depending on the necessities.
- All the panels can be disassembled without removing fixing bolts
