There is a gap between the rotating parts and the static parts of the ridge ventilator. When the impeller rotates, the pressure difference caused on both sides of the gap causes some of the energy-obtained fluid to flow from the high-pressure side to the low-pressure side through the gap, resulting in losses. It is called volume loss. Generally speaking, in the case of equal suction diameters, a steel roof ridge vent with a larger number of revolutions has a higher volumetric efficiency. In the case of the same specific speed, the volumetric efficiency of the ridge vents with large flow rate is also relatively high. In practical applications, the glass fiber reinforced plastic negative pressure fan is generally used in the ventilation of the factory building, especially in the acid and alkali corrosive places. During the installation, the glass fiber reinforced plastic negative pressure fan is installed on one side of the indoor wall window. The air inlet uses a window or door corresponding to the other side of the room, and the air flows from the air inlet to the glass fiber reinforced plastic negative pressure fan to form a convective ventilation.

In this process, the doors and windows near the glass fiber reinforced plastic negative pressure fan are kept closed, and the air is forced to flow into the room through the doors and windows on the side of the air inlet. The position where the compressor is installed is discharged outside. Architectural design and material selection of ridge ventilator can maximize energy saving. The prominent flat roof not only ensures the long-term safety and leak-free installation of the drainage system, but also creates a novel and unique flat-roofed building, which breaks the straight line structure of the top and increases The jumping sense of the flat-topped building. 

No matter what kind of comfortable living space, if there is noise or uncomfortable sound, you will not calm down. Wooden windows can cut off sound transmission because of the sealing structure and the special sound insulation properties of wood. On the one hand, it reduces the noise of outdoor airplanes and vehicles from entering the room, and it is also difficult for indoor conversation sounds to leak to the outdoors. Aluminum alloy skylights and PVC skylights do not match the overall interior solid wood decoration style, which affects the overall effect and grade of the decoration. Commonly used ventilation equipment includes smoke vent manufacturers. The smoke vent manufacturers can be divided into roof ventilating buildings and non-powered buildings. Ventilator, natural ventilator, etc. Among them, what are the performance advantages of the ventilation building? Preventing the intrusion of rain and snow is the basic requirement for roof ventilation buildings. The standardized installation and construction of the outer guard plate, rain shield and flooding plate is an important guarantee for the rainproof ability of the ventilated building: the reliable overlap of the pressed metal plate on the supporting member means that the pressed metal plate passes through a certain length and The supporting member is in contact, and there are a sufficient number of fasteners in the contact range to connect the profiled metal plate and the supporting member into one body. The lap length of the short sides of the color steel plates of the outer protective plate, flashing plate, ridge tile, and gutter should be ≥200mm. In order to improve the weather resistance of the overlapped part, apply two coats of weather-resistant mortar on the overlapped part, and then fasten it with a self-tapping screw or rivet with a sealing ring, with a spacing of ≤300mm.

The arc-shaped structure of the roof ventilation skylight has excellent structural strength, and this strength does not need to rely on a large-size steel structure like the shed skylight to achieve, so the self-weight of the roof smoke vent's body is greatly reduced. In addition to fully considering the wind, snow load and earthquake effects, the supporting structure of the ventilation building depends on the specifications of the building. In fact, most of the supporting structure of the factory building serves the roof load. 

Therefore, the selection of material specifications for ventilated building components is very important. First, it should fully ensure that it meets the requirements of wind and snow loads, and at the same time avoid unnecessary selection of excessive specifications, so as not to increase the weight of the load, increase the load on the roof of the workshop and increase the cost. The color plate is generally 0.5mm aluminum-zinc color-coated plate as a ventilator shielding and rain-proof material, the strength is 280Mpa, the amount of aluminum-zinc plating on both sides is ≥150g, the thickness of the coating film is 22-25um on the front and 15mu on the back. The characteristics of this board are Has good corrosion resistance.