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Challenges of vacuum and aspiration expansion nozzles
Suction 'bell' – standard solution to increase the suction area (vacuum cleaning nozzle, cooker hoods, aspiration systems).
As the flow path increases, the air velocity in the expansion nozzle decreases, resulting in a steady, laminar flow becoming turbulent, causing even greater losses. Switching to a larger suction surface also inevitably distances the collection area (wider end of the expansion nozzle) from the high head area (hose).
Result: loss of performance, especially important for industrial systems and battery-powered devices, resulting in shorter operating times or increased product weight and dimensions.
As the flow path increases, the air velocity in the expansion nozzle decreases, resulting in a steady, laminar flow becoming turbulent, causing even greater losses. Switching to a larger suction surface also inevitably distances the collection area (wider end of the expansion nozzle) from the high head area (hose).
Result: loss of performance, especially important for industrial systems and battery-powered devices, resulting in shorter operating times or increased product weight and dimensions.
Challenges of expansion nozzles
Suction 'bell' – standard solution to increase the suction area (vacuum cleaning nozzle, cooker hoods, aspiration systems).
Initial speed of the air flow is slowed down due to the expansion of the throughput channel; as a result, in the nozzle, the laminarity of the flow changes to turbulence, which slows down the flow even more. The transition to a larger suction surface always distances the working plane from the zone with high discharge (pipe or hose).
Result: loss of performance especially important for industrial systems and accu devices (reduction of operating time, or increasing the weight and dimensions of batteries).
Initial speed of the air flow is slowed down due to the expansion of the throughput channel; as a result, in the nozzle, the laminarity of the flow changes to turbulence, which slows down the flow even more. The transition to a larger suction surface always distances the working plane from the zone with high discharge (pipe or hose).
Result: loss of performance especially important for industrial systems and accu devices (reduction of operating time, or increasing the weight and dimensions of batteries).
Up-to-date solution
In order to maintain the original air flow rate and its laminarity, it is sufficient to divide the suction pipe into several smaller tubes of similar cross-sectional area.
E.g., if a Ø7.87" tube (cross-sectional area 48,670 sq. in.) is divided into 5 Ø3.5" tubes (total cross-sectional area 48'677 sq. in.) by smooth transitions, the flow rate in each of the 5 tubes will be very close to the flow rate in the initial tube.
The suction tubes are distributed over the working surface, very close to the contact plane. Each tube ends in a shallow micro funnel.
Advantage of 15% to 50% for different materials and conditions. Important for industrial systems and cordless tools.
E.g., if a Ø7.87" tube (cross-sectional area 48,670 sq. in.) is divided into 5 Ø3.5" tubes (total cross-sectional area 48'677 sq. in.) by smooth transitions, the flow rate in each of the 5 tubes will be very close to the flow rate in the initial tube.
The suction tubes are distributed over the working surface, very close to the contact plane. Each tube ends in a shallow micro funnel.
Advantage of 15% to 50% for different materials and conditions. Important for industrial systems and cordless tools.
Up-to-date solution
In order to maintain the original air flow rate and its laminarity, it is sufficient to divide the suction pipe into several smaller tubes of similar cross-sectional area.
E.g., if a Ø7.87" tube (cross-sectional area 48,670 sq. in.) is divided into 5 Ø3.5" tubes (total cross-sectional area 48'677 sq. in.) by smooth transitions, the flow rate in each of the 5 tubes will be very close to the flow rate in the initial tube.
The suction tubes are distributed over the working surface, very close to the contact plane. Each tube ends in a shallow micro funnel.
Advantage of 15% to 50% for different materials and conditions. Important for industrial systems and cordless tools.
E.g., if a Ø7.87" tube (cross-sectional area 48,670 sq. in.) is divided into 5 Ø3.5" tubes (total cross-sectional area 48'677 sq. in.) by smooth transitions, the flow rate in each of the 5 tubes will be very close to the flow rate in the initial tube.
The suction tubes are distributed over the working surface, very close to the contact plane. Each tube ends in a shallow micro funnel.
Advantage of 15% to 50% for different materials and conditions. Important for industrial systems and cordless tools.
2 times shorter suction time!
Vacuuming speed test of a multi-channel nozzle vs. a conventional "expansion" nozzle
Модели аспирационных панелей
Модели аспирационных панелей
Arrangement of suction channels in the nozzles
Monochannel
Multichannel
Suction flow comparison animation
Monochannel
Multichannel
Animation of speed and turbulence
Flow rate
Turbulence
Suction structure and efficiency
Monochannel panel1st stage 7 1/2" air duct - 1 pc.
2nd stage air duct - none
3rd stage air duct - none
39.370 x 39.370" aspiration panel - 1 pc.
Geometric suction area 10 3/4 sq.ft.
Effective suction area 4 1/2 sq.in.
Multichannel panel1st stage 7 1/2" air duct - 1 pc.
2nd stage 3 1/2" air duct - 5 pcs.
3rd stage 1 1/2" air duct - 25 pcs.
7 1/2 x 7 1/2" aspiration panel - 25 pcs.
Geometric suction area 10 3/4 sq.ft.
Effective suction area 7 sq.in.
Monochannel panel1st stage 7 1/2" air duct - 1 pc.
2nd stage air duct - none
3rd stage air duct - none
39.370 x 39.370" aspiration panel - 1 pc.
Geometric suction area 10 3/4 sq.ft.
Effective suction area 4 1/2 sq.in.
Multichannel panel1st stage 7 1/2" air duct - 1 pc.
2nd stage 3 1/2" air duct - 5 pcs.
3rd stage 1 1/2" air duct - 25 pcs.
7 1/2 x 7 1/2" aspiration panel - 25 pcs.
Geometric suction area 10 3/4 sq.ft.
Effective suction area 7 sq.in.
Suction flow simulation
Monochannel
Multichannel
Suction power
Low
High
Aspiration panel models
Aspiration panel models
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