Thermal actuators for ventilation lines
Post by: gilbert_admin_delta in News
![](https://www.delta-concept.fr/wp-content/uploads/2020/02/Conduit-de-ventilation-3.jpg)
![](https://www.delta-concept.fr/wp-content/uploads/2020/02/Conduit-de-ventilation-300x262.png)
Air distribution lines are made of different mechanical parts, including elements with flaps, for air or smoke flow regulation, as well as for security reasons.
![](https://www.delta-concept.fr/wp-content/uploads/2020/02/clapet.png)
The regular flaps are manual
![](https://www.delta-concept.fr/wp-content/uploads/2020/02/clapet2-1-300x182.png)
… or motorized
![](https://www.delta-concept.fr/wp-content/uploads/2020/02/clapete-motorise-coupe-feu-300x300.png)
![Capteur SnapTemp](https://www.delta-concept.fr/wp-content/uploads/2019/11/SnapTemp-Probe-1.png)
DELTA CONCEPT fabricates and sells thermal probes for motorized flaps control
DELTA CONCEPT also fabricates sub-assemblies which actuate flaps, using the bimetal technology. They are automatic and energy free.
![](https://www.delta-concept.fr/wp-content/uploads/2020/02/Clapet-avec-bilame-spirale.jpg)
Spiral shaped bimetal: The thermal sensor turns with a linear deflection (constant angular degree, per °C of temperature variation).
![](https://www.delta-concept.fr/wp-content/uploads/2020/02/Verrou-coupe-feu-schema.png)
Cantilever shaped bimetal: The thermal sensor pushes an arm in a bi-stable translation mouvement (snap action and reset at 2 different temperatures, on specification).
![](https://www.delta-concept.fr/wp-content/uploads/2020/02/Clapet-avec-bilame-cloquant.jpg)
Advantages of the bimétal technology:
- Can be used both as thermal sensor and actuator
- Simple and low cost
- Electrical energy free
- Reliable and sustainable
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