Multi-blade Smoke Exhaust Outlet
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Multi-blade smoke exhaust vents are typically installed on the side walls of corridors or within the smoke exhaust systems of windowless rooms; under normal conditions, they remain closed. In the event of a fire, smoke detectors transmit an alarm signal to the control center, which then supplies a 24V DC current to the vent's control mechanism, causing the vent to open rapidly to facilitate smoke extraction. The vent can also be opened manually via remote control and manually reset remotely. (The distinction between Type I and Type II models is identical to that of the PYK-3 series.) The configuration (A+250) × B corresponds to Type I, while A × (B+250) corresponds to Type II; in both cases, the aluminum alloy blades of the air vent are oriented parallel to dimension A.
**Performance Features of Remote-Controlled Multi-Blade Smoke Exhaust Vents**
1) Opens upon receiving a 24V DC ± 2.4V electrical signal.
2) Supports remote manual opening.
3) Supports remote manual resetting.
4) Outputs an electrical signal indicating that the vent is open.
5) Can be interlocked with other equipment in accordance with user requirements.
**Technical Specifications for Remote-Controlled Multi-Blade Smoke Exhaust Vents**
Airflow Rate (at a pressure differential of 300 Pa): ≤ 700 m³/m²·h
Control Voltage: DC 24V
Microswitch Contact Capacity: AC 380V, 3A
Resistance Coefficient (when fully open): < 0.5
Thermal Fuse Activation Temperature: 280°C
Main Structural Components: Valve body, valve blades, shaft, shaft bushings, inspection port, actuator.
Multi-blade Smoke Exhaust Outlet
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Guanyun Street, Guangyun Sub-district, Wucheng County, Dezhou City, Shandong Province. 266 meters north of the intersection of 240 National Highway and Longxi Street.