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Kopie_von_4014263_Pos9_VH_img_05psd.png

DIFFUSION GRILLES TYPE DGX  

DIFFUSION GRILLE, MADE OF STAINLESS STEEL, WITH INDIVIDUALLY ADJUSTABLE BLADES 

The high-quality diffusion grille blends perfectly into any room.

  • Suitable for comfort and industrial areas for walls, sills, circular or rectangular air ducts
  • Are mostly resistant to aggressive environmental influences and cleaning agents
  • Retain their good appearance for years, do not require surface protection and do not become statically charged
  • Single piece available in the nominal sizes 200 × 50 to 900 × 300 mm
  • Adjustable blades allow for divergence
  • Uniform air distribution, easy to realise thanks to various attachments
  • Simple fixing options for quick and easy installation
  • Available in various RAL Classic or NCS colours

Options:

  • Filter element
  • Attachment for flow channel
  • Linear run section

General information


Application

  • Diffusion grilles type DGX as air diffusers (supply and extract air) for comfort and industrial zones
  • Directed supply air flow for mixed flow ventilation
  • Blades are adjustable to meet different local requirements
  • For constant and variable volume flows
  • For supply air to room air temperature differences from –12 to +4 K
  • For installation in walls, sills, circular or rectangular air ducts


Special characteristics

  • Individually adjustable blades
  • Countersunk hole, concealed screw fixing with installation subframe, screwless fixing
  • Filter element for extract grille optional


Variants

  • Various border sections
  • Various blade arrangements
  • Linear run section
  • Countersunk hole in front border
  • Non-perforated front border, without factory-fitted fixing option
  • Screwless fixing


Attachments

  • Volume flow rate balancing on site
  • AG: Damper blade with opposed action blades
  • AS: Hit and miss damper made of aluminium (parallel slide damper)
  • AB: skimming plate
  • SAS: slanted hit and miss damper made of aluminium
  • LB: Perforated sheet metal


Parts and characteristics

  • Front border made of flanged profile
  • Individually adjustable, horizontal/vertical blades
  • Perimeter seal, factory-fitted
  • Vertical centre mullion for nominal lengths over 600 mm


Accessories

  • Filter element for extract grille


Nominal sizes

Width [mm]

200 – 2000

Height [mm]

50 - 500

For version R, RA

Width [mm]

200 - 1200

Height [mm]

50, 100, 150, 200, 250, 300

Further dimensions on request.

Construction features

  • Front border profile 25 x 40 mm with bevelled edge to cover the installation opening
  • Profiled blade, manually adjustable
  • Fixed connection between attachment and diffusion grille via screw connection

Suitable air duct diameters

  • Ø100 - 2000 mm

Note: The possible round air duct diameters are reduced depending on the grille height.

Material

  • Front border made of stainless steel type 1.4404
  • Blades made of stainless steel type 1.4401
  • Small parts made of stainless steel type 1.4301
  • PES filter
  • Foam seal


Surfaces

  • Front border and blades chemically stained
  • Front border and blades electropolished
  • Front border and blades without surface treatment
  • Front border and blades powder-coated in RAL 9010 pure white, GU50
  • Front border and blades powder-coated according to RAL CLASSIC colour palette
  • Front border and blades powder-coated according to NCS


Standards and guidelines

  • Sound power level of the air-regenerated noise measured according to EN ISO 5135
  • Filter class ISO Coarse 45% according to ISO 16890


Maintenance

  • Low maintenance as construction and materials are not subject to wear and tear
  • Inspection and cleaning according to VDI 6022

Technical information

  • FUNCTION
  • QUICK SIZING
  • SPECIFICATION TEXT
  • TECHNICAL DATA
  • ORDER CODE
Schematic illustration of diffusion grille DGX-V-AS FK_4151252_Pos34_AS_Vai.png

1 Front border standard
2 vertical blades
3 Attachment hit and miss damper (parallel slide damper)
4 Countersunk hole
5 Galvanised steel surface

Functional description


Diffusion grilles are air terminal devices for the supply air and extract air of ventilation and air conditioning systems. They direct the supply air into the room. Diffusion grilles with adjustable blades allow for adapting the discharge direction to the local conditions. The result is a mixed flow ventilation in comfort zones and industrial zones, with good overall room ventilation. Due to induction, the air velocity of the supply air flow decreases with increasing distance from the diffusion grille. The distance at which the airflow velocity reaches a certain defined value, e.g. 0.35 m/s, is called throw distance. The supply air flow from wall grilles that are arranged close to the ceiling achieves a greater throw distance than a comparable free jet (without ceiling influence), due to the ceiling effect. Single grilles, groups of grilles and linear run sections all achieve different throw distances. In cooling mode, it is necessary to consider the jet deflection towards the occupied zone, which increases as the supply air to room air temperature difference increases and the discharge velocity decreases. In heating mode, the supply air jet is deflected towards the ceiling. This has no negative effect on the airflow velocity in the occupied zone, but it may affect the overall ventilation of the room.

Grille installation with ceiling effect (side view)
Strahlausbreitung_gc_01ai.png

Due to the ceiling effect, the supply air flows into the room with a Coanda effect and achieves a greater throw distance (Lx).

Strahlausbreitung_gc_01ai.png
Strahlausbreitung_gc_02ai.png
Strahlausbreitung_gc_03ai.png


Korrekturfaktoren

Lamellenanordnunggerade44°84°110°140°

gegeneinader

Strahlausbreitung Winkel ß20°60°80°90°180°20°

Distanz Dh horizontal ausblasend

0.10 x RT

0.29 x RT44

0.42 x RT84

0.5 x RT110

–

0.10 x RTg

Distanz Dv vertikal ausblasend

0.25 x RT

0.76 x RT44

1.07 x RT84

1.25 x RT110

3.26 x RT140

0.25 x RTg

Raumtiefe

RT Diagr. 1 und 2

RT44 = 0.77 x RT

RT84 = 0.56 x RT

RT110 = 0.42 x RT

RT140 = 0.35 x RT

RTg = 1.3 x RT

Faktoren für die eff. Ausblasgeschwindigkeit veff

veff = 1.0

veff 44° = 1.18

veff 84° = 1.35

veff 110° = 1.52

veff140° = 1.97

veff geg = 1.97

 


Berechnungsbeispiel


 


Gegeben
Raumlänge RL = 7.0 m, Raumhöhe RH = 5.5 m, Einbauhöhe EH = 4.0 m,
Luftvolumenstrom V = 1080 m³/h, resp. 300 l/s, ungestörte Strahlausbreitung, Lamellenstellung 84° divergierend


 


Gesucht
Gitterabmessung B × H, Raumtiefe RT und RT84, Ausblasgeschwindigkeit veff, stat. Druckdifferenz ∆ps,
Schallleistungspegel LwA, LwNC, LwNR


 


Lösung
Aus RT84 = 0.56 × RT folgt RT = RT84/0.56 = 7/0.56 ~13 m. Mit diesem Wert in das Diagram 1, auf der vorherigen Seite, ergibt: 1 Stk DGX-VH,
600 × 200 mm, veff = 3.3 m/s. Aus EPF (Easy Product Finder) folgt: ∆ps = 4 Pa, da jedoch 84° divergierend, muss korrigiert werden. Somit ∆ps84 = 3.3 × 1.50 = 4.95 m/s ⇒ 8 Pa, Schallleistungspegel LwA = 34 + 3 = 37 dB(A), LwNC = 37 - 4 = 33,
LwNR = 37 - 2 = 35. Genauere LwA und Δps Daten siehe EPF (Easy Product Finder)

Specification text

Diffusion grille as supply air or extract air diffuser for the ventilation of rooms in ventilation and air conditioning systems. Consisting of an elegant front border with bevelled edge. Installation preferably in circular or square air ducts, and for wall mounting. Ready-to-install component, consisting of a front border and individually adjustable vertical and/or horizontal blades. Customised aerodynamic and acoustic design with web configurator.

Material

  • Front border made of stainless steel type 1.4404
  • Blades made of stainless steel type 1.4401
  • Small parts made of stainless steel type 1.4301
  • PES filter
  • Foam seal


Surfaces

  • Front border and blades chemically stained
  • Front border and blades electropolished
  • Front border and blades without surface treatment
  • Front border and blades powder-coated in RAL 9010 pure white, GU50
  • Front border and blades powder-coated according to RAL CLASSIC colour palette
  • Front border and blades powder-coated according to NCS


Nominal sizes

Width [mm]

200 – 2000

Height [mm]

50 - 500

For version R, RA

Width [mm]

200 - 1200

Height [mm]

50, 100, 150, 200, 250, 300

Further dimensions on request.

Technical data

Design-specific

Standards and guidelines

Sound power level of the air-regenerated noise measured according to EN ISO 5135

Filter class ISO Coarse 45% according to ISO 16890

Variants

  • Various border sections
  • Various blade arrangements
  • Linear run section
  • Countersunk hole in front border
  • Non-perforated front border, without factory-fitted fixing option
  • Screwless fixing


Accessories

  • Filter element for extract grille


Equivalence criteria

  • Uniform, adjustable divergence
  • Grille available in various colours
  • Optional preset divergence
  • Various optional attachments for restricting and balancing the grilles
  • Ventilation data and acoustic data verified by laboratory measurements
  • Dust and scratch protection thanks to individual packaging
  • Glued-on foam seal
  • Various fixing systems for common applications
  • Stainless steel materials with refined surface


Manufacturer of the product

TROX HESCO Schweiz AG

Serie

DGX

Nominal sizes

200 × 50 - 900 × 300 mm

Minimum volume flow rate

11 – 1,111 l/s or 40 – 4,000 m³/h

Maximum volume flow rate, with LWA max. 40 dB(A)

without attachments

53 - 3,056 l/s or 189 - 11,000 m³/h

Supply air temperature

-12 to +4 K

Volume flow rate indication for single grilles (undivided construction) for supply air.

The individual sizing of the ventilation and acoustic data for the different variants is possible with our free design programme Easy Product Finder

H/B

200

250

300

400

500

600

750

900

50

0.008

0.01

0.012

0.015

0.019

0.023

0.029

0.035

100

0.015

0.019

0.023

0.031

0.039

0.046

0.058

0.069

150

–

–

0.035

0.046

0.058

0.069

0.087

0.104

200

–

–

–

0.062

0.077

0.092

0.116

0.139

250

–

–

–

–

–

0.115

0.144

0.173

300

–

–

–

–

–

0.139

0.173

0.208

Geometric free area supply air (blade arrangement VH) Ageo [m2]


H/B

200

250

300

400

500

600

750

900

50

0.008

0.01

0.012

0.016

0.02

0.024

0.03

0.036

100

0.016

0.02

0.024

0.032

0.04

0.048

0.059

0.071

150

–

–

0.043

0.054

0.066

0.071

0.089

0.107

200

–

–

–

0.077

0.092

0.095

0.119

0.143

250

–

–

–

–

–

0.119

0.149

0.178

300

–

–

–

–

–

0.143

0.178

0.214

Geometric free area extract air (blade arrangement V) Ageo [m2]


H/B

200

250

300

400

500

600

750

900

50

0.007

0.009

0.011

0.015

0.019

0.022

0.028

0.034

100

0.015

0.019

0.022

0.03

0.037

0.045

0.056

0.067

150

–

–

0.034

0.045

0.056

0.067

0.084

0.101

200

–

–

–

0.06

0.075

0.09

0.112

0.135

250

–

–

–

–

–

0.112

0.141

0.169

300

–

–

–

–

–

0.135

0.169

0.202

Effective air inflow area supply air (blade arrangement H) Aeff [m2]


H/B

200

250

300

400

500

600

750

900

50

0.006

0.007

0.009

0.011

0.014

0.017

0.021

0.026

100

0.011

0.014

0.017

0.023

0.028

0.034

0.043

0.051

150

–

–

0.026

0.034

0.043

0.051

0.064

0.077

200

–

–

–

0.045

0.057

0.068

0.085

0.102

250

–

–

–

–

–

0.085

0.106

0.128

300

–

–

–

–

–

0.102

0.128

0.153

Effective air discharge area extract air (blade arrangement V) Aeff [m2]

DGX––R–
–V/500 x 100/AG////44/S9
||||||||||||
123456 789101112
1 Type
DGX Diffusion grille, stainless steel
  
2 Variant 

No entry: single grille
E End section
M Middle section

3 Construction

No entry: installation into walls, sills or ducts
R Installation into circular ducts (large duct diameters)
RA Installation into circular ducts with small Ø and additional bend (small duct diameters)

4 Front border

No entry: profile 25 × 40 mm with bevelled edge
F01 Profile 5 × 40 mm without bevelled edge
F02 Profile 10 × 40 mm without bevelled edge
F03 Profile 10 × 40 mm with bevelled edge
F04 Profile 15 × 40 mm without bevelled edge
F05 Profile 15 × 40 mm with bevelled edge
F06 Profile 20 × 40 mm without bevelled edge
F07 Profile 20 × 40 mm with bevelled edge
F08 Profile 25 × 40 mm without bevelled edge
F09 Profile 30 × 40 mm with bevelled edge
F10 Profile 35 × 40 mm with bevelled edge
F11 Without edge

 
5 Blade arrangement 

V Vertical front blade
VH Vertical front blade, horizontal air deflection

 
6 Nominal size [mm]
Specify width × heigh


7 Attachment 

Suitable for supply air and extract air
No entry: without attachment (front grille only)
AG Damper blade, opposed action blades
AS Hit and miss damper (parallel slide damper)
AB Skimming plate

Only suitable for supply air
SAS Slanted hit and miss damper 
LB Perforated sheet metal


8 Perforated sheet metal variant
Only with attachment LB
R40 stainless, 35 - 40 % free ventilation cross-section

9 Filter
Suitable for extract air
No entry: without filter element
EF with filter element (only without attachment or with attachment AS, AG)


10 Fixing
No entry: countersunk holes in front border
SL screwless fixing (spring clips supplied in screw bag)
NO No factory-fitted fixing option

11 Air discharge 
No entry: diverging 0°
44 diverging 44°
84 diverging 84°
110 diverging 110°
140 diverging 140
GEG Opposed


12 Surface
No entry: Galvanised steel
S9 chemically pickled (Standard)
S8 electropolished
P0 Powder-coated, RAL 9010 (pure white), GU 50
P1 Powder-coated, specify RAL CLASSIC colour, gloss level
PS powder-coated, specify NCS colour and gloss level
OO without surface treatment


Order example: DGX-R-V/500×100/AS/EF/NO/S9

TypeDGX – Diffusion grille, stainless steel
VariantSingle grille
ConstructionInstallation into circular ducts (large duct diameters)
Front borderProfile 25 x 40 mm with bevelled edge
Blade arrangement Vertical front blade
Nominal size [mm]Width 500, height 100
AttachmentHit and miss damper (parallel slide damper)
Filterwith filter element 
Fixingno factory-fitted fixing option
Air dischargediverging 0°
Surfacechemically pickled 

Downloads

product information

  • Product data sheet DGX

    DGX__Version_HESCO_2024__PD_2024_08_26_DE_en Product data sheet  1,4 MB pdf

certificates

  • Declaration of hygiene conformity DGX

    DGX_HC_2024_08_CH_en Declaration of hygiene conformity 840 KB pdf

  • Manufacturer's statement DGX

    DGX_CE_MS_2024_08_CH_en Manufacturer's statement 750 KB pdf

References

TROX SERVICES

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Please specify your message and type of request
Tel.: +41 55 250 71 11 | Fax: +41 55 250 73 10

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Contact

Thank you for your message!

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Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +41 55 250 71 11 | Fax: +41 55 250 73 10


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