Anti-condensation structure of smoke detector

Abstract

The invention discloses an anti-condensation structure of a smoke detector, and relates to the technical field of fire detection equipment, the anti-condensation structure comprises an upper cover body and a lower cover body, the port of the upper cover body and the port of the lower cover body are connected in a buckling manner, the joint is sealed by a spigot, the side wall, close to the bottom, of the lower cover body is provided with an open drainage through hole, and the open drainage through hole is communicated with the upper cover body and the lower cover body. The bottom of the lower cover body is of an arc curved surface structure, a water outlet is formed in the lowest position of the curved surface, a shell is defined by the upper cover body and the lower cover body, a smoke sensing chamber and a circuit board are arranged in the shell, the smoke sensing chamber comprises a smoke sensing detection lower chamber and a smoke sensing detection upper chamber, and the circuit board is arranged between the upper cover body and the lower cover body and detachably fixed. The smoke sensing detection upper chamber is connected with the circuit board in an abutting mode, the smoke sensing detection lower chamber is arranged opposite to the arc curved surface of the lower cover body, and the smoke sensing detection lower chamber is of a labyrinth structure. The structure is simple, water drops can be effectively prevented from entering the shell, the water drops in the shell can be quickly led out, and the phenomenon of condensation is prevented.

Description

technical field [0001] The invention relates to the technical field of fire detection equipment, in particular to an anti-condensation structure of a smoke detector. Background technique [0002] The essence of the work of the fire detector is to use the sensing elements to respond to the characteristic signals of physical phenomena such as mass flow (combustible gas, combustion gas, smoke particles, aerosol) and energy flow (flame light, combustion sound) in the fire. , and convert it to another tractable physical quantity. [0003] Photoelectric smoke detectors are point detectors that use the smoke particles generated by fire to absorb and scatter light to detect fires. When smoke particles interact with light, there are two different processes: the particles can re-radiate the received energy at the same wavelength, and the re-radiation can occur in all directions, but the intensity of the radiation in different directions is different, called scattering; the other On ...

AI Technical Summary

Problems solved by technology

[0004] The working mode of the smoke detector is intermittent work, the temperature drops when the power consumption is low, and the surface exposed to the air will condense, causing corrosion, short circuit and other problems

The existing structure is open or semi-open. When the dripping water from the external installation position flows into the interior due to condensation or other reasons, and there is no drip line inside, the water cannot be effectively discharged.

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