Smoke aerosol testing device and method for simulating human physiological environment

Abstract

The invention belongs to the technical field of detection, and particularly relates to a smoke aerosol testing device and method for simulating a human physiological environment. The smoke aerosol testing device comprises a smoke sampling device (1), a diluting device (2) and an aerosol testing device (3). The smoke sampling device (1) comprises a flexible collector (1-1) used for being connected with a to-be-tested cigarette / smoking set (4), and the flexible collector (1-1) comprises a flexible inner air bag (1-1-1), an outer pressure-resistant box (1-1-2) and vacuumizing equipment (1-1-3). According to the smoke aerosol testing device, the flexible collector is used for sampling and diluting smoke. The flexible inner air bag in the flexible collector is in sealing connection with a to-be-tested cigarette / smoking set through a pipeline, the outer pressure-resistant box is connected with a vacuum source, no gas exchange exists between the flexible inner air bag and the outer pressure-resistant box, a vacuum pipeline and a smoke pipeline are separated, and real-time testing of particle size distribution of smoke aerosol of a heating type tobacco product is achieved.

Description

technical field [0001] The invention belongs to the technical field of detection, and in particular relates to a smoke aerosol test device and a test method for simulating the physiological environment of a human body. Background technique [0002] Tobacco smoke is a complex and dynamically changing aerosol. The particle size distribution and distribution of chemical substances in cigarette smoke aerosol directly affect the smoking quality of cigarettes and the deposition of smoke in the human respiratory tract. Particles of different particle sizes are deposited in different parts of the human respiratory system. The smaller the aerosol particle, the deeper the part that enters the human body, and the impact on human health is also different. At the same time, there are differences in the chemical composition of particles of different particle sizes in smoke aerosol, which will directly affect the smoking experience. Therefore, the study of cigarette aerosol plays an import...

AI Technical Summary

Problems solved by technology

[0005] Although the current aerosol test device has done a good job in the cigarette smoke aerosol test, using smoking machines, diluters, and aerosol detectors to solve the problem of continuous and stable sample injection, there are still the following problems : 1. The transmission power of the existing flue gas testing device comes from the negative pressure of the remote vacuum generator and the diluter. This negative pressure delivery mode is not conducive to adding other instrument sampling and sampling interfaces on the test pipeline, so it cannot be real-time Test, only intermittent test

2. Whether it is a traditional cigarette or a new tobacco product, the smoke aerosol generated by it must pass through the human mouth and throat and then enter the lungs. The mouth and throat are similar to the saturated humidity environment, and the impact on the smoke aerosol cannot be ignored

4. Aerosol particles are easy to deposit on the opening and closing of the control valve and the injection port of the flue gas diluter, which will block these places

Therefore, these places need to be cleaned frequently, which is very troublesome. If the concentration of smoke aerosol is too large, it will lead to inconsistent test results after a few puffs of a cigarette.

These reasons make it impossible to obtain the true particle size distribution of the aerosol and the characteristics of the particle size and chemical species distribution

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