Why Tempering Glass Needs Quench Blowers
In thermal tempering, heated glass passes into an air-quench section. The blowers help create a controlled difference between how quickly the surfaces and the core cool.
Follow the air through the process
The blower feeds both faces
Air enters upper and lower distribution boxes, then leaves through rows of nozzles. Jets reach both glass surfaces. The air turns along the faces and escapes between the nozzle rows.
The surface cools before the core
Look at a thickness section. The surfaces cool first while the interior stays warmer for longer. These colors illustrate the cooling sequence, not measured temperatures.
Later contraction leaves a stress pattern
As the interior continues to cool and contract, the bonded glass layers constrain one another. The finished glass can retain surface compression balanced by tension inside. This residual state develops during the cooling history.
Uniform quenching needs the whole air system
Nozzle spacing, delivery pressure and the glass thickness affect the cooling pattern. A large blower alone cannot guarantee uniform tempering. The glass line must verify the resulting quality.
Airflow function
- Upstream of the upper and lower quench distribution boxes, supplying the nozzle rows that cool both glass faces.
- The LONGWELL LW9-19 high-pressure centrifugal family is listed for glass-related applications. Compare the required nozzle delivery with the fan curve and distribution-system losses.
What can change the result
- Unequal nozzle delivery changes the surface cooling pattern across the glass.
Start with the complete air path
Share your layout and the information you already have. Unknown values can be identified before a configuration is selected.
Match the fan to this air path
LONGWELL lists the LW9-19 high-pressure centrifugal family for glass-related applications. Share nozzle duty, total airflow, glass size, cycle and air temperature to check the fan curve and line requirements.
Where it sits
Upstream of the upper and lower quench distribution boxes, supplying the nozzle rows that cool both glass faces.
Why consider this configuration
The LONGWELL LW9-19 high-pressure centrifugal family is listed for glass-related applications. Compare the required nozzle delivery with the fan curve and distribution-system losses.
Check the result in your equipment
Discuss your glass quench duty
Send nozzle pressure and total air volume, glass thickness, width and cycle, air temperature, drive and noise. Ask LONGWELL to review a suitable configuration, fan curve, drawing and control details. A layout or existing fan model can start the review.
A layout, installation photos or your existing model is enough to start the discussion.