Swirl diffusers

Highly inductive air distribution for high volume flows

Swirl diffusers enable the draft-free introduction of high volumetric flows into comfort areas of all kinds and meet the highest demands for comfort.

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Integrated eccentric rollers

The patented, integrated eccentric rollers of the DAL358 enable high volumetric flows at low sound power levels. At the same time, they generate high room air induction and thus allow small minimum distances between the diffusers.

Rapid mixing of room air

The highly inductive Coanda ceiling jet of the swirl diffusers ensures rapid mixing of supply air and room air. As a result, temperature differences are quickly equalized and air velocities in the occupied zone are reduced – drafts are avoided.

Our products

DAL358

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The DAL358 is a high-induction swirl air diffuser with star-shaped slot rails and a square or round face plate, suitable for ceiling-flush installation as well as for exposed ceilings.
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DAL359

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The DAL359 is a high-induction swirl air diffuser with radially arranged air outlet openings and a square or round face plate, suitable for flush ceiling installation as well as for open ceilings.
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DRS

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The DRS is a highly inductive swirl air diffuser with stamped rigid air guide blades embossed at 45 degrees, an integrated rectifier, and is available in round or square design.
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LDI

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The LDI is a swirl-vane adjustable diffuser for the draft-free introduction of conditioned supply air into high, air-conditioned comfort and industrial rooms.
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DAL358

The DAL 358 swirl air diffuser is operated using a connection box and is available in both round and square versions, each in six nominal sizes ranging from DN 300 to DN 800.

DAL359

The DAL359 swirl air diffuser is available in six nominal sizes, ranging from DN 300 to DN 800, in either a square or round design.

DRS

The highly inductive DRS swirl diffuser is available in six sizes, square or round .

LDI

The LDI diffusers are available in six sizes with different nominal diameters . They can be installed at a height of 3 m to 32 m .

Application areas

  • In comfort and/or industrial areas of office and administrative buildings, cleanrooms, department stores, assembly rooms, laboratory rooms or production and multipurpose halls, as well as printing plants or trade fair and exhibition halls (depending on the swirl diffuser)
  • Suitable for constant as well as variable air volume flow systems
  • The DAL358 is advantageous for variable volumetric flows, because a reduction in the volumetric flow is possible without changing the jet pattern and the swirl effect and induction ratio are maintained.
  • The DAL359 is suitable for mixed ventilation when high air volumes are required.
  • The DRS is ideally suited for room heights of 2.20 m to 6 m and high cooling loads.

Integrated air-guiding elements

The flow-optimized and acoustically optimized air-guiding elements give the DAL359 swirl diffuser an attractive appearance and enable reliable use even at high cooling loads and low room heights. Even when installed, it can be adapted to changed volumetric flows and discharge temperatures.

Technical features

Variable jet pattern

Three jet patterns are possible with the DAL358 and DAL359: rotating, one-sided or two-sided:

  • In the standard setting the eccentric rollers generate a rotating ceiling jet with a swirl component and the associated high induction.
  • with the one-sided air discharge direction, the rollers of one half are set in the opposite direction.
  • A two-sided ceiling jet results from the opposite roller setting of two quarter-circle segments each.

Optimal air distribution

The stamped air-directing blades in the DRS divide the air flow into a multitude of individual highly inductive jets.

  • Generation of a pronounced horizontal jet
    Reduction of supply air velocities and temperature differences in the shortest possible distance
  • pleasant and thermally comfortable climate in the occupied zone
  • function ensured even at high cooling loads and low room heights
  • low sound power levels guaranteed at large volumetric flows

How it works

  • Depending on the setting of the blade angles in the LDI , different flow patterns are imposed on the air, ranging from a round free jet to an axial and radial swirl jet.
  • This enables continuous adaptation to different cooling, ventilation and heating scenarios.
  • Depending on the installation height, individual air volume flows from 350 to 12,000 m³/h per diffuser can be covered with the LDI.
  • Cold air accumulation in the floor area of the occupied zone is avoided, because the fresh air is supplied specifically and with maximum energy efficiency to the occupied zone.

Installation

  • Preferably, the DRS diffuser is operated with a plenum box.
  • However, it can also be mounted directly via a transition piece (or clamping flange) with an integrated perforated plate at the pipe end.
  • In addition to integration into a ceiling grid, suspended installation by means of a wire rope suspension is also possible.
  • Through the integration of the fins into the diffuser discharge plane, a pronounced horizontal jet is also ensured in suspended operation.

Flush ceiling design

Integrated flush into a ceiling panel, the front panel of the DRS is hardly noticeable. It is available in a round or square design. For installation in plasterboard ceilings, the round DRS can be integrated perfectly. The square panels fit into standard ceiling grids. Both variants are designed with stamped, rigid air-directing blades embossed at 45°.

Selection options

Adapt the product to your requirements – these options are available for selection.

Function

Supply air or extract air (DAL358 and DAL359)

Front panel

round or square (DAL358, DAL359, DRS)

Nominal size

300 - 800 mm (DAL358, DAL359)
100 - 355 mm (DRS)
250 - 800 mm (LDI)

Installation

integrated flush into a ceiling panel or suspended (DRS)

Color variants

RAL 9010, matte (15-29%) or unpainted (LDI)

Project solutions

Ein in der Decke eingesetzter Luftdurchlass DAL359.

Nordhorn

Vrielmann GmbH

Nordhorn

Vrielmann GmbH

  • New construction of the company headquarters
  • 13 x DAL359 
  • 55 x SAL
  • 8 x TOP including KaMax air outlet
  • 7 x Venkon
  • 1,200 m² GK50WT
  • 2 x AHUs (8.000 m³/h as well as 3.300 m³/h with counterflow heat exchanger)
#Unit Heaters
#AHUs
#diffusers
#Fan Coils
#Heating and cooling ceiling systems
In der Hotelbar an der Decke montierte Luftdurchlässe DAL358.

Lübeck-Travemünde

SlowDown

Lübeck-Travemünde

SlowDown

  • New conference hotel
  • 110 m² chilled ceiling
  • 112 x Venkon
  • diffusers DRS, SAL, DAL358
  • UniLine
  • Katherm HK
#Diffusers
#Door air curtains
#Trench technology
#Fan Coils
#Heating and chilled ceiling systems
In der abgehängten Decke mit Deckenplatten sind Lichtelemente sowie DAL358 Drallluftdurchlässe installiert. Außerdem wird Kinderkleidung an Wandaufhängungen präsentiert.

Bottrop

Woolworth market

Bottrop

Woolworth market

  • New market building in the center of Bottrop
  • AHU unit with Ka2O evaporation technology (6000 m³/h)
  • 6 x ceiling climate cassettes in the sales area, heating and cooling (predecessor of the current KaDeck)
  • 2 x ceiling climate cassettes in the storage area, heating only (predecessor of the current KaDeck)
  • 3 x Tandem (ceiling installation)
  • 12 x DAL358
  • KaControl control system
#Fan Coils
#AHU units
#Diffusers
#Control technology
#Door air curtains
Ein in der Zwischendecke der Hotellobby installierter KaCool D AF Fan Coil mit weißer Blende und DAL358 Luftdurchlässe.

Lingen

Hotel Looken Inn

Lingen

Hotel Looken Inn

  • New hotel construction
  • 102 x Venkon
  • KaCool D AF
  • DAL358
#Fan Coils
#Diffusers
In der Messehalle an der Decke eingesetzter Luftdurchlass LDI.

Cologne

Koelnmesse

Cologne

Koelnmesse

  • Best climate for the trade fair
  • LDI
#diffusers
Zu sehen ist das im Ostküstenflair gestaltete Beach Motel in Heiligenhafen.

Heiligenhafen

Beach Motel

Heiligenhafen

Beach Motel

  • Newly built motel with East Coast flair
  • DAL359
  • 2 x AHUs with Ka2O technology (5,000 m³/h air conditioning for meeting and conference rooms, 11,000 m³/h air conditioning for the lobby and restaurant area)
  • KaControl control technology
#Diffusers
#AHUs
#Control technology
Ein großer Versammlungsraum mit Tischen und zahlreichen DAL359 Luftauslässen in der Decke.

Salzbergen

Family Center

Salzbergen

Family Center

  • From event hall to meeting center
  • AHU unit (supply air/extract air, 6500 m³/h)
  • DAL359
  • KaControl control system
#AHU units
#Diffusers
#Control technology

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