Air duct type dust sensor and dust concentration detection method

Abstract

The invention provides an air pipe type dust sensor. The air pipe type dust sensor comprises a sensor component, an air sampling pipe and a fixing device, wherein the sensor component is arranged outside an air duct and used for detecting dust concentration; the air sampling pipe penetrates through the wall of the air duct, one end of the air sampling pipe is connected with the sensor component, the other end of the air sampling pipe is arranged in the air duct, and the air sampling pipe is used for collecting detected air from the air duct, conveying the detected air to the sensor component and conveying the air detected by the sensor component into the air duct; the fixing device is used for fastening the air sampling pipe to the wall of the air duct. The invention further provides a dust concentration detection method.

Description

technical field [0001] The invention relates to an air duct type dust sensor and a detection method thereof, in particular to an air duct type dust sensor used in ventilation ducts and other occasions, through which the duct type dust sensor can realize the detection of the dust concentration in the ventilation duct . Background technique [0002] With the gradual improvement of people's requirements for production and living environment, there are more and more applications of various ventilation systems, mainly involving factory air purification systems, central air conditioning systems, and return air systems. The use of the ventilation system is inseparable from the ventilation duct, and the ventilation duct forms a relatively closed room with the room through the air outlet and the air return port. In this way, the dust in the ventilation duct will be blown to all corners of the room with the air-conditioning wind, and instead become an indoor environment. source of ai...

AI Technical Summary

Problems solved by technology

However, the traditional dust sensor needs to be installed in the ventilation duct to work. Since construction personnel usually cannot enter the ventilation duct, the operation of installing the sensor from the outside to the ventilation duct is very complicated, and construction must be made on the wall of the ventilation duct. After the sensor is installed, repair the construction port

This method will cause damage to the ventilation duct itself and affect its life. The life of the repaired part of the construction port is not optimistic. At the same time, when the sensor fails and needs to be repaired, it is necessary to destroy the repaired part again and take out the sensor. After the repair is completed, repeat the above installation operation

This greatly restricts the use of dust sensors in places such as ventilation ducts

In addition, the dust sensor itself includes electronic components, etc., and has certain dustproof and waterproof requirements for the installation environment. If it is used in a humid or dusty environment in the ventilation duct, a sufficient level of waterproof and dustproof protection measures must be added, which will greatly increase Manufacturing cost of the sensor

In addition, the wind speed in the ventilation duct is often much higher than the wind speed in the general application environment of the dust sensor, and the traditional dust sensor cannot achieve accurate measurement at a large wind speed.

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