Challenges of vacuum and aspiration expansion nozzles
An expansion nozzle is a standard solution to expand the suction area: most of vacuum cleaners, cooker hoods, aspiration systems are equipped with it.
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
An expansion nozzle is a standard solution to expand the suction area: most of vacuum cleaners, cooker hoods, aspiration systems are equipped with it.
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.
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 Ø200 mm tube (cross-sectional area 31'400 mm2 ) is divided into 5 Ø89 mm tubes (total cross-sectional area 31'405 mm2 ) 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 Ø200 mm tube (cross-sectional area 31'400 mm2 ) is divided into 5 Ø89 mm tubes (total cross-sectional area 31'405 mm2 ) 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 Ø200 mm tube (cross-sectional area 31'400 mm2 ) is divided into 5 Ø89 mm tubes (total cross-sectional area 31'405 mm2 ) 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 Ø200 mm tube (cross-sectional area 31'400 mm2 ) is divided into 5 Ø89 mm tubes (total cross-sectional area 31'405 mm2 ) 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 Ø200 mm air duct - 1 pc.
2nd stage air duct - none
2nd stage air duct - none
1000 x 1000 mm aspiration panel - 1 pc.
Geometric suction area 1 m2
Effective suction area 0.412 m2
Multichannel panel1st stage Ø200 mm air duct - 1 pc.
2nd stage Ø89 mm air duct - 5 pcs.
2nd stage Ø40 mm air duct - 25 pcs.
200 x 200 mm aspiration panel - 25 pcs.
Geometric suction area 1 m2
Effective suction area 0.653 m2
Monochannel panel1st stage Ø200 mm air duct - 1 pc.
2nd stage air duct - none
2nd stage air duct - none
1000 x 1000 mm aspiration panel - 1 pc.
Geometric suction area 1 m2
Effective suction area 0.412 m2
Multichannel panel1st stage Ø200 mm air duct - 1 pc.
2nd stage Ø89 mm air duct - 5 pcs.
2nd stage Ø40 mm air duct - 25 pcs.
200 x 200 mm aspiration panel - 25 pcs.
Geometric suction area 1 m2
Effective suction area 0.653 m2
Suction flow simulation
Monochannel
Multichannel
Suction power
Low
High
Aspiration panel models
Aspiration panel models
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