Sound insulation
We take care of the perfect backdrop. Because our diverse sound insulation combines high-quality materials with effective function.
satisfied customers
Certification
All BLH HK baffles are now available with a hygiene conformity certificate according to VDI 6022 (01/2018).
Sound insulators
Standard version
Our BLH sound insulators and splitters optimally attenuate sound in ventilation and air-conditioning systems. Here, the focus of the noise is usually in the frequency range of 250 Hz.
The design and dimensions are variable and are produced according to the customer's specification. The handling from enquiry, calculation, order to delivery is carried out very flexibly. A special design is also carried out for the critical noise range of 250 Hz. The damping material used generally has a glass-silk laminated surface . It is also abrasion-resistant up to 25 m/s and offers effective protection against damage.
Sound insulators
Special version
The following special designs or agreements are possible on request:
- Inflow plate: To reduce the pressure loss
- Foil: In the case of moist and dusty media, it is possible to cover the absorption material with foil underneath the grille. At high frequencies, this slightly reduces the insertion loss.
- Angle frame: As connecting flange or counter frame according to DIN 24193
- Material: For aggressive media, frame and cover made of stainless steel or aluminium can be used as well as coated sheet metal.
- Industrial version: Reinforced version for industrial applications e.g. welded, self-supporting or for high pressures and air velocities
Sound insulators
Scenery Structure & Types
Our high-quality baffles are manufactured in a frame made of sendzimir-galvanised sheet steel and absorption material as filling made of mineral wool with laminated glass silk fleece covering, building material class A1 according to DIN 4102 (non-combustible).
HKS backdrop
- Standard backdrop
- Use predominantly at medium and high frequencies
HKR backdrop
- Resonance baffle with half offset chamber plates
- Use at low and the main interference frequency of 250Hz
HKL backdrop
- with perforated plate cover on both sides
- Use at high air speeds
base sound insulators
Plinth sound insulator variants
Standard version
- Roof base with built-in sound insulation baffles
- In galvanised steel, V2A, V4A or aluminium
- All-round tightly mounted mounting collar
- Threaded bolt for connection of duct or roof bonnet
slanted version
- For pitched roof with inclination up to 30%
- In galvanised steel, V2A, V4A or aluminium
- All-round tightly mounted mounting collar
- Threaded bolt for connection of duct or roof bonnet
Casing made of galvanised sheet steel 1.5 mm in welded design, including the built-in splitters made of non-combustible absorption material, which are protected against abrasion by flowing air by means of glass fibre fleece.