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RK_img_02psd.psd.link
Aerodynamically optimised splitter frame

Aerodynamically optimised splitter frame

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Tested to VDI 6022

Tested to VDI 6022

RK_img_01psd.png
RK_img_02psd.psd.link
doc_graphic_000009.png

RK 

Splitter with high insertion loss in the low frequency range

Sound attenuator splitters with resonating panels, ready to be used in ventilation and air conditioning systems

  • Attenuation effect due to resonance
  • Energy efficient due to aerodynamically formed frame (bullnose radius 20 mm)
  • Acoustic data measured to EN ISO 7235
  • Sound absorbing material is biosoluble and hence hygienically safe
  • The sound absorbing material is non-combustible, to EN 13501, fire rating class A1
  • For use in areas with potentially explosive atmospheres (according to EC Directive 2014/34/EU (ATEX)), zones 1, 2, and zones 21 and 22 (outside) according to EC Directive 1999/92/EC
  • Operating temperature 100 °C max., up to 300 °C for a limited period of time 


Optional equipment and accessories

  • Stainless and PUR-coated constructions on request

General information

Application

  • Sound attenuator splitters with resonating panels are used for the reduction of fan and air-regenerated noise in ventilation and air conditioning systems
  • Attenuation effect due to resonance
  • Attenuation particularly in the low frequency range of critical fan noise
  • Hygiene tested and compliant with VDI 6022
  • For use in areas with potentially explosive atmospheres (ATEX), zones 1, 2, 21 and 22 (outside) according to EC Directive 1999/92/EC.


Special features

  • Resonating panels ensure increased insertion loss in the frequency range of critical fan noise
  • Energy-efficient due to aerodynamically formed splitter frame
    • Up to 30 % lower differential pressure
  • Hygiene tested and compliant with VDI 6022


Nominal sizes

  • H: 150 – 1800 mm
  • L: 500, 750, 1000, 1250, 1500 mm
  • Intermediate sizes of H are possible: 150 – 1800 mm in increments of 1 mm
  • Intermediate lengths (L) are possible: 150 – 1500 mm in increments of 1 mm
  • H + L 600 mm min., 3300 mm max., 80 kg max.
  • Height and length subdivided: not available


Variants

Principal attenuation range

  • A: 250/125 Hz
  • C: 125/63 Hz


Construction

Materials and surfaces

  • No entry: Galvanised steel 1.0917
  • P1: Powder-coated RAL 7001, silver grey


Parts and characteristics

  • Aerodynamically formed frame
    • Reduced weight and increased rigidity due to special profile
    • Helps to optimise the airflow, hence reducing the air-regenerated noise
    • Reduces the pressure loss
    • Covers the edges of the sound absorbing material
  • Resonating panels fitted to reduce air-regenerated noise by resonance


Construction features

  • Sound absorbing material and resonating panels fitted to reduce air-regenerated noise by resonance
  • Aerodynamically formed splitter frame (bullnose radius 20 mm) that helps to reduce turbulence on both the upstream and downstream sides; frame with grooves for increased rigidity
  • Frame edges with bullnose to protect the infill
  • Operating temperature up to 100 °C, up to 300 °C for 8 h max.


Materials and surfaces

  • Splitter frames, centre mullion and resonating panels made of galvanised sheet steel 1.0917
  • Absorption material is mineral wool
    • To EN 13501, fire rating Class A1, non-combustible
    • RAL quality mark RAL-GZ 388
    • Biosoluble and hence hygienically safe according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EC
    • Inert to fungal and bacterial growth according to EN 846


Standards and guidelines

  • Insertion loss and sound power level of air-regenerated noise tested to ISO 7235
  • Meets the hygiene requirements of VDI 6022, VDI 3803 Part 1 and DIN 1946 Part 4
  • EC Directive 2014/34/EC (ATEX): Equipment and protective systems intended for use in areas with potentially explosive atmospheres
  • EC Directive 1999/92/EC (ATEX): Improvement of the safety and health protection of workers potentially at risk from explosive atmospheres.


Maintenance

  • Low maintenance as construction and materials are not subject to wear
  • Regular cleaning intervals according to VDI6022


Technické údaje

Function, Technical data, Quick sizing, Specification text, Order code

  • FUNCTION
  • TECHNICAL DATA
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE
Schematic illustration of RK RK_gc_02ai.png

1 Splitter frame
2 Resonating panels on both sides
3 Sound absorbing material

The attenuation effect of the RK splitters is due to resonance. The splitter surface that runs parallel to the airflow is covered with resonating panels. These panels start oscillating due to the sound (resonance) and hence absorb sound energy. Resonance works best in the frequency range of critical fan noise. The splitters have a mineral wool infill that prevents an amplification of the sound.

 


Splitter thickness200 mm
Nominal sizes (H × L)

150 × 450 – 1500 × 1500 mm, 450 × 150 – 1800 × 1500 mm


Height subdivide

Not available

Length subdivided

Not available

Intermediate sizesIn increments of 1 mm
Operating temperature

Up to 100 °C, up to 300 °C for 8h max.


The length (L) of sound attenuator splitters refers to the airflow direction.

 


Quick sizing tables provide a good overview of the insertion loss and of differential pressures for different airway widths and airflow velocities. Intermediate values can be calculated with our Easy Product Finder design program.

The differential pressures apply to sound attenuators with a height of 1 m.


RK200-A, insertion loss De [dB] and differential pressure Δpt [Pa]

L

Airway width

Centre frequency fm [Hz]

vs [m/s]

63

125

250

6

10

14

500

50

6

17

12

21

58

114

500

100

5

10

5

11

31

61

1000

50

8

24

14

24

67

131

1000

100

5

18

6

13

35

69

1500

50

11

32

17

27

75

147

1500

100

8

25

8

14

40

78

RK200-C, insertion loss De [dB] and differential pressure Δpt [Pa]

L

Airway width

Centre frequency fm [Hz]

vs [m/s]

63

125

250

6

10

14

500

50

8

14

7

21

58

114

500

100

3

6

3

11

31

61

1000

50

10

20

9

24

67

131

1000

100

7

10

4

13

35

69

1500

50

13

27

11

27

75

147

1500

100

10

13

5

14

40

78

Sound attenuator splitters used for the reduction of fan noise and air-regenerated noise in air conditioning systems. Attenuation effect due to resonance. To be used in combination with sound absorbing splitters. Energy-saving as well as hygiene tested. Installation kit consists of an aerodynamically profiled frame (bullnose radius of 20 mm), sound absorbing material and resonating panels. The splitter frame reduces pressure losses and air-regenerated noise. The special profile helps to reduce the weight and increase the rigidity of the splitters. Frame edges with bullnose to protect the sound absorbing infill. Insertion loss and sound power level of air-regenerated noise measured according to EN ISO 7235. Hygiene compliant with VDI 6022, VDI 3803 Part 1 and DIN 1946 Part 4. Suitable for areas with potentially explosive atmospheres (ATEX), zones 1, 2, 21 and 22 (outside) according to Directive 1999/92/EC.


Special features

  • Resonating panels ensure increased insertion loss in the frequency range of critical fan noise
  • Energy-efficient due to aerodynamically formed splitter frame
    • Up to 30 % lower differential pressure
  • Hygiene tested and compliant with VDI 6022



Materials and surfaces

  • Splitter frames, centre mullion and resonating panels made of galvanised sheet steel 1.0917
  • Absorption material is mineral wool
    • To EN 13501, fire rating Class A1, non-combustible
    • RAL quality mark RAL-GZ 388
    • Biosoluble and hence hygienically safe according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EC
    • Inert to fungal and bacterial growth according to EN 846


Variants
Principal attenuation range
  • A: 250/125 Hz
  • C: 125/63 Hz


Construction

Materials and surfaces
  • No entry: Galvanised steel 1.0917
  • P1: Powder-coated RAL 7001, silver grey

Technical data

  • Splitter thickness: 200 mm
  • Nominal sizes: 150 × 450 – 1500 × 1500 mm, 450 × 150 – 1800 × 1500 mm
  • Intermediate sizes: in increments of 1 mm
  • Operating temperature up to 100 °C, up to 300 °C for 8 h max.

The length (L) of splitter sound attenuators refers to the airflow direction.


Sizing data

  • B [mm]
  • H [mm]
  • L (in airflow direction) [mm]
  • qv  (m³/h)
  • De At 250 Hz [dB]
  • Δpst [Pa]


RKA/200×600×1500
| | | | | | |
1 2 3 4 5 6 7

1 TypeRK 
Sound attenuator splitter 

2 Variant
No entry: TROX standard variants 

3 Resonator construction 
Optimised for the following frequencies
A 250/125 Hz
C 125/63 Hz 

4 Material
No entry: galvanised steel (1.0917)
P1 Powder-coated RAL 7001, silver grey 

5 Splitter thickness [mm]
200 

6 Height [mm]
150 – 1800 

7 Length in airflow direction [mm]
150 – 1500


Order example: RK–A/200×1000×1200
Resonator construction250/125 Hz
Height1000 mm
Length1200 mm

Dimensions, Weights, Installation details

  • DIMENSIONS
  • WEIGHTS
  • INSTALLATION DETAILS
RK_gc_01ai.png
  • H: 150 – 1800 mm
  • L: 500, 750, 1000, 1250, 1500 mm
  • T: 200 mm
  • Intermediate heights (H) are possible: 150 – 1800 mm in increments of 1 mm
  • Intermediate lengths (L) are possible: 150 – 1500 mm in increments of 1 mm
  • H + L 3300 mm max., 80 kg max.

The total weight for intermediate sizes can be generated with our Easy Product Finder design program

*See picture on the right

RK-A [kg]

H

L

500

750

1000

1250

1500
300468911
600710131619
9001014182227
12001318232935
15001622293642
18002028364351


RK-C [kg]

H

L

500750100012501500
300710121518
6001217222833
9001725324048
12002332425363

1500

28

40

53

65

77

1800

35

49

64

79

X

X = construction not available

Installation and commissioning


  • Follow the installation manual and comply with the general codes of good practice in order to achieve the given performance data
  • Up to height H = 1200 mm, length L = 1500 mm and 40 kg max.: any installation orientation, but we recommend upright installation of splitters
  • From height H = 1201 mm: upright installation only
  • The length (L) of sound attenuator splitters and splitter sound attenuators refers to the airflow direction; be sure to note how width, height and length are defined, particularly in case of a vertical airflow
  • A turbulent airflow may cause damage to the splitters 
    • A straight upstream section is required upstream of the sound attenuator
    • The recommended minimum upstream section depends on the change of direction, change of cross-section and splitter arrangement
  • Installation in ducts outside closed rooms requires sufficient protection against the effects of weather

Stažení

informace o produktu

certifikáty

návody k obsluze

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Jsme tu pro vás

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Tel.: +420 283 880 380 | Fax: +420 286 881 870

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Kontakt

Děkujeme vám za zprávu!

Vaše zpráva je odeslána a zakrátko bude zpracována.
Naše oddělení pro servisní dotazy se s vámi co nejrychleji spojí Pro obecné informace o výrobcích nebo o službách můžete také zavolat:
Tel.: +420 283 880 380 | Fax: +420 286 881 870