Oil fume sampling detection device and sampling method thereof

Abstract

The invention provides an oil fume sampling detection device and a sampling method thereof. The oil fume sampling detection device comprises an optical transmitting module, an optical receiving module, a processing module, an air inlet pipe, an air outlet pipe and a sampling box, the processing module processes a signal received by the optical receiving module, and the sampling box is located at the outside of a fume exhaust pipe and used for storing oil fume gas and mounting the optical transmitting module and the optical receiving module; one end of the air inlet pipe is communicated with the fume exhaust pipe, the other end of the air inlet pipe is communicated with the sampling box, and the air inlet pipe is used for enabling the oil fume gas to flow to the sampling box from the fume exhaust pipe; one end of the air outlet pipe is communicated with the sampling box while the other end thereof is communicated with the fume exhaust pipe, and the air outlet pipe is used for enabling the oil fume gas to flow out to the fume exhaust pipe from the sampling box. With the device and method provided by the invention, a process of detecting the oil fume gas is in a stable and sealed darkenvironment, interference of outside stray light on the optical receiving module is reduced to the minimum, and accuracy of oil fume detection is increased greatly.

Description

technical field [0001] The invention relates to the detection field of cooking fumes, in particular to a cooking fume sampling and detection device and a sampling method thereof. Background technique [0002] In the process of food cooking and processing, the organic matter of oil and ingredients is thermally decomposed or cracked, and the moisture in the ingredients is vaporized rapidly. Oil fume composed of sol, water vapor and fine particles. Oil fume not only directly endangers the health of the surrounding people, but also has become an important source of urban air pollution, and the use of oil fume detectors to accurately detect cooking fume is a necessary and basic link for controlling oil fume. [0003] China Patent Authorization Announcement No. CN 205481203 U, authorized announcement date August 17, 2016, discloses a laser oil fume sensing device for detecting the concentration of oil fume in the exhaust pipe, including: a light emitter for emitting a light sourc...

AI Technical Summary

Problems solved by technology

The oil fume detection device in the above-mentioned patent uses backscattering method to detect the oil fume. The device has the following disadvantages: 1. The stray light in the exhaust pipe easily interferes with the optical receiver, reducing the accuracy of the oil fume measurement; 2. The signal light generated by backscattering is weak, resulting in weak signal light intensity received by the optical receiver

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