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Method for generating cigarette smoke aerosol with standard concentration, temperature and pressure

A technology of standard concentration and cigarette smoke, which is applied in the field of tobacco, can solve the problems of aerosol not meeting the standard requirements and unstable pressure, and achieve the effect of reducing use and improving quality

Active Publication Date: 2021-05-28
ZHENGZHOU TOBACCO RES INST OF CNTC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002]In the process of aerosol production, it is usually necessary to maintain a stable pressure in the aerosol mixing device, which is usually achieved by pre-vacuumizing, but with the aerosol and The injection of inert gas increases the air pressure in the aerosol mixing device, and the pressure changes. At this time, it is no longer possible to adjust the pressure by vacuuming, which leads to the unstable pressure and the generated aerosol does not meet the standard requirements.

Method used

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  • Method for generating cigarette smoke aerosol with standard concentration, temperature and pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, a device for generating standard concentration, temperature and pressure heated cigarette smoke aerosol, including aerosol mixing device, exhaust valve, inert gas injection device, aerosol generator, flow pump, pressure sensor and controller ;

[0029] The aerosol mixing device is provided with a piston-type mixing chamber, the exhaust port of the piston-type mixing chamber is connected to the atmosphere through an exhaust valve, and the controller controls the opening and closing of the exhaust valve;

[0030] The first air inlet of the piston-type mixing chamber is sealed and communicated with the aerosol generator, and the second air inlet of the piston-type mixing chamber is sealed and communicated with the inert gas injection device;

[0031] The sealing piston of the piston-type mixing chamber is controlled and adjusted by a power device and a controller, and the pressure sensor is installed in the piston-type mixing chamber, and the pr...

Embodiment 2

[0040] The difference between this embodiment and embodiment 1 is:

[0041] The injection control of the aerosol generator is controlled by the flow pump. In step 2), the controller controls to turn on the flow pump, inject aerosol from the aerosol generator into the aerosol mixing device, and pump a certain flow S1 for a period of time. At time T1, the aerosol is introduced into the aerosol mixing chamber, and then the controller controls the flow pump to close, and the volume of the introduced aerosol under normal pressure is less than V1. At this time, the controller detects the pressure in the piston-type mixing chamber. If it is greater than P1 , the controller controls and adjusts the sealing piston, and adjusts the pressure in the piston-type mixing chamber to be less than P1, so as to inject inert gas.

[0042] In this embodiment, since the flow pump is used to control the aerosol, the control precision is improved, and the quantification of the aerosol is easier.

Embodiment 3

[0044] The difference between this embodiment and embodiment 2 is:

[0045] The injection of the inert gas is controlled by the flow controller. In step 3), the controller controls the operation of the flow controller, thereby precisely controlling the quality S2 of the inert gas flowing into the piston-type mixing chamber.

[0046] The effect of this embodiment is similar to that of Embodiment 2. The inert gas is controlled by the flow controller, the control accuracy is improved, and the quantification of the inert gas is easier.

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Abstract

The invention provides a device for generating cigarette smoke aerosol with standard concentration, temperature and pressure. The device comprises an aerosol mixing device, an exhaust valve, an inert gas injection device, an aerosol generator and a controller, a piston type mixing cavity is arranged in the aerosol mixing device, an exhaust port of the piston type mixing cavity is connected with the atmosphere through an exhaust valve, and the controller controls opening and closing of the exhaust valve. A first air inlet of the piston type mixing cavity is hermetically communicated with an aerosol generator, and a second air inlet of the piston type mixing cavity is hermetically communicated with an inert gas injection device; and a sealing piston of the piston type mixing cavity is controlled and adjusted by a power device and a controller, a pressure sensor is further installed in the piston type mixing cavity and connected with the controller, and the controller controls the stroke of the sealing piston according to detection data of the pressure sensor so as to ensure that the air pressure in the piston type mixing cavity is constant. The device has the advantages of ensuring constant pressure in the aerosol production process and being capable of generating standard aerosol.

Description

technical field [0001] The invention relates to the field of tobacco, in particular to a device and method for generating standard concentration, temperature and pressure heated cigarette smoke aerosol. Background technique [0002] In the process of aerosol production, the aerosol mixing device usually needs to maintain a stable pressure, and most of them are realized by pre-vacuumizing, but with the injection of aerosol and inert gas, the air pressure in the aerosol mixing device increases , the pressure has changed, and it is no longer possible to adjust the pressure by vacuuming at this time, which will cause the pressure to become unstable and the aerosol produced does not meet the standard requirements. [0003] In general production, due to the low requirements for aerosols, a certain degree of change is allowed, but in standardized inspection work, standardized aerosols are often required for calibration, which requires the adjustment of the air pressure of the equip...

Claims

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Application Information

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IPC IPC(8): G01N1/28
CPCG01N1/28G01N2001/2893
Inventor 史占东李栋张勍苗芊杨荣超曾波范黎张鹏飞赵航于千源
Owner ZHENGZHOU TOBACCO RES INST OF CNTC