| 摘要 |
The surface of a component of a detector, which may be a smoke, flame, gas or temperature detector, includes, or is at least partially coated with, a contaminant-resistant or self-cleaning material. Such a material may be a low energy material with a high contact angle to water, or a hydrophilic material, or a chemically, photochemically or catalytically active material. The material may be photoactivatable, and the detector may contain a radiation source to carry out the activation. An arrangement for monitoring the condition of the component surface may be present, as may a control system to activate the material. Additional means for removing deposits from the surface, such as by means of vibration, heating, or fluid flow, may also be present. This allows the detector to remain clean without manual cleaning, and prevents the deterioration of detector sensitivity and operation. |
