Axial fans are devices designed for rapid air transfer. Fans with a cylindrical cross-section are used with a duct connection or for free air discharge. Axial fans are integrated with jet fan ventilation systems in parking lots, which allows the collected air to be delivered to the floor level. Axial fans can be used both as aspirators and ventilators.
Roof type air conditioners are manufactured in a compact form. The device casing is designed with special bending techniques that increase durability and is based on a steel structure. The sheet metal thickness varies between 1.2 mm and 2.0 mm depending on the surface and is galvanized and powder coated. These air conditioners are built on a solid frame with elements for attaching ropes and sections for fork lifting. Capacitor fans with external rotors are used as axial fans. Scroll compressors are employed in two-, three-, or four-stage cooling systems. The condenser and evaporator streamers are made of copper pipes and aluminum plates. Aspirators and fans use direct drive via plug fans. Environmentally friendly R407c and R410a gases are used.
Roof air conditioners, also called package air conditioners, are used in multifunction air conditioning systems where both supply and particle transfer are needed. Their plug fans enable efficient and reliable ventilation, often integrated into jet fan systems in parking lots to deliver air to floor level. They can be used as both aspirators and fans. Compared to other systems, rooftop air conditioners operate more efficiently due to the absence of belt mechanisms and pulleys, minimizing performance losses. Plug fans generate high pressure with backward-sloping blades, allowing long duct connections. Air output can be adjusted easily by replacing a single panel board. Double wall panels include high-density stone wool insulation between two walls.