What are the advantages of centrifugal fans in glass processing field?

In the field of glass processing, with its unique structural design and performance characteristics, centrifugal fans can adapt to a variety of demanding processing scenes. The core advantages can be expanded from four dimensions: pressure performance, media adaptation, operational stability and scene compatibility, as follows:

1. High pressure output, suitable for "high resistance scene" of glass processing.

Many links in glass processing (such as cutting, edge grinding and tempering) need to meet the demand of high resistance airflow (such as long-distance pipeline transportation and high negative pressure vacuum cleaning), and one of the core advantages of centrifugal fans is that they can generate static pressure and total pressure much higher than axial fans;

For example, when glass is cut, a large number of fine glass chips will be produced, and the chips need to be transported from the processing table to the dust collection box through a pipeline, the length of which may be 5-10 meters, and there may be bends in the middle; The high static pressure of centrifugal fan can overcome the resistance along the pipeline and local resistance, and ensure that debris is not blocked and transported efficiently.

Another example is the "wet dust removal" scene of the glass edger. The glass powder mixture containing water mist needs to be pumped away, and the water mist will increase the airflow resistance. The high pressure of the centrifugal fan can ensure the airflow speed to be stable and avoid dust deposition in the pipeline.

2. Adapted to multi-media environment, pollution resistance and corrosion resistance.

Glass processing involves complex media such as "dry debris, wet dust, acidic/alkaline fog", and the structural design of centrifugal fan makes it more tolerant to such media;

Wear resistance of dust: The impeller of centrifugal fan is mostly made of welded steel plate or cast steel (wear-resistant coating can be customized in some scenes), and the blade angle and flow passage design can reduce the direct impact of dust, which can prolong the service life by 30%-50% compared with axial fan (thin blade is easy to be worn by hard glass debris).

Corrosion resistance/moisture resistance: acidic or wet fog will be generated in glass etching (such as hydrofluoric acid etching) and cleaning before coating; Centrifugal fan can be customized with stainless steel (304/316) shell and impeller to prevent metal parts from being corroded, while the open structure of axial flow fan is more likely to let corrosive media invade the motor and lead to failure.

3. The airflow is stable and the noise is controllable, which meets the requirements of precision machining.

Glass processing (such as liquid crystal glass substrate and optical glass) requires extremely high "environmental stability", and centrifugal fans have more advantages in airflow and noise control:

The air flow is even and pulsation-free: the centrifugal fan throws the air flow from the radial direction by "centrifugal force doing work", and the fluctuation of air flow speed and pressure is small (pulsation rate is usually less than 5%), which is suitable for "air flow assisted drying" in glass coating-stable air flow can avoid bubbles and wrinkles in the film layer; However, the airflow of axial flow fan is easily affected by the rotation of blades, which may damage the precision film.

Low-noise design space is large: the volute structure of centrifugal fan can "cushion and reduce noise" of airflow, and can be used with muffler and shock absorption base; In the glass deep processing workshop (such as insulating glass assembly), the running noise of centrifugal fan can be controlled below 75dB, which is much lower than that of axial fan (usually above 85dB), which meets the requirements of workshop environmental protection and personnel operating comfort.

4. Strong scene compatibility and flexible adaptation to multi-process requirements.

The glass processing flow covers "raw material crushing, cutting, edging, tempering, coating and cleaning", etc. The centrifugal fan can adapt to different processes through "model customization and parameter adjustment":

For large flow and low negative pressure scenes (such as hot air drying after glass cleaning), "low pressure centrifugal fan" can be selected to quickly take away the water on the glass surface with large airflow;

For small flow and high negative pressure scenes (such as fine dust removal of optical glass), a "high pressure centrifugal fan" can be selected to accurately absorb tiny dust with high negative pressure to avoid polluting the glass surface;

Some centrifugal fans support "double suction and variable frequency control", and the air volume can be adjusted according to the processing rhythm (for example, the cooling air of tempering furnace needs to change with the glass thickness), so as to reduce energy consumption and ensure the processing quality.

To sum up, the advantage of centrifugal fan in the field of glass processing is that its "pressure-flow characteristics, medium tolerance and operational stability" can accurately match the complex requirements of glass processing, especially in the scene of high resistance, high cleanliness and precise control, which is more irreplaceable than axial flow fan.