CN212674946U - System for supplying and adjusting aerosol of electronic cigarette smoke liquid - Google Patents
System for supplying and adjusting aerosol of electronic cigarette smoke liquid Download PDFInfo
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- CN212674946U CN212674946U CN201922481826.5U CN201922481826U CN212674946U CN 212674946 U CN212674946 U CN 212674946U CN 201922481826 U CN201922481826 U CN 201922481826U CN 212674946 U CN212674946 U CN 212674946U
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- aerosol
- infusion pump
- peristaltic infusion
- dilution gas
- aerosol generator
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Abstract
An aspect of the utility model discloses an electron cigarette tobacco juice aerosol is supplied with and governing system, including peristaltic infusion pump, hot type aerosol generator, main control unit and dilution gas flowmeter. The gas inlet of the thermal aerosol generator is connected with a dilution gas flowmeter through an aerosol dilution gas pipeline, and the amount of dilution gas entering the thermal aerosol generator can be adjusted; the liquid inlet of the thermal aerosol generator is connected with a peristaltic infusion pump through an electronic cigarette liquid conveying pipe; the main controller is respectively electrically connected with the peristaltic infusion pump and a heating module in the thermal aerosol generator, and controls the closing state and the transmission rate of the peristaltic infusion pump and the heating temperature of the heating module. The utility model provides an electron cigarette tobacco juice aerosol is supplied with and governing system can satisfy the requirement that the electron cigarette tobacco juice inhales and exposes the security evaluation, provides security evaluation data, and is with low costs, can be promoted on a large scale.
Description
Technical Field
The utility model relates to an electron cigarette security evaluation technical field especially relates to an electron cigarette tobacco juice aerosol supplies with and governing system.
Background
Electronic cigarettes (e-cigarettes), also known as Electronic Nicotine Delivery Systems (ENDS), are a new type of nicotine intake that looks similar to cigarettes. The electronic cigarette mainly comprises a cartridge, an atomizing device and a battery 3. The atomizer is powered by a battery rod and is capable of converting liquid nicotine in the cartridge into a mist, thereby giving the user a sensation similar to smoking. The electronic cigarette liquid is a liquid used in an electronic cigarette cartridge. The main components comprise propylene glycol, glycerol, nicotine, various additives and the like. The electronic cigarette has the generation principle that the cigarette liquid of the electronic cigarette is in a steam state through a heating coil, and the cigarette liquid is cooled by a filter tip to form smoke. In the past, merchants are popularized widely by selling electronic cigarettes without harmful components such as tar, suspended particles and the like, and even in product introduction, flags such as 'smoking cessation' and 'lung clearing' are marked. However, the safety of the electronic cigarette is not fully scientifically demonstrated, and no systematic electronic cigarette safety evaluation data exists at home and abroad, so that the potential risks brought to the health of a user by the electronic cigarette cannot be determined at present. Therefore, sufficient safety evaluation of the electronic cigarette components is required.
Inhalation safety evaluations are evaluations of health hazards caused by respiratory contact of gases, volatile substances, aerosol substances, aerosols/particles, and the like. Provides a method for evaluating the toxicity and action mode of the test object caused by inhalation through a respiratory system, and evaluating the lung function, the histopathology and the pathophysiology change of the respiratory tract. Provide basis for establishing the allowable contact level of the human.
The research of the electronic cigarette smoke liquid inhalation exposure safety generally adopts the expensive smoking machine to carry out the electronic cigarette smoking, and according to a certain smoking mode, the atomizer generates heat and atomizes the smoke liquid to form aerosol through a battery power device, so that the smoke cartridge needs to be replaced, and the aerosol concentration which can be reached is very limited. If a smoking machine is not used, a liquid aerosol generator can be adopted, the liquid aerosol generator commonly used in the market at present is based on the principles of ultrasonic atomization and high-pressure atomization, is completely different from the electric heating atomization generation principle of the electronic cigarette, and has lower atomized aerosol concentration and single concentration. For example, the German Bailey generator for clinical nebulization of solutions generates aerosol with a concentration of about 1-3 mg/L. The concentration of aerosol generated by a Collison atomizer of BGI company in America is about 3-9 mg/L. In view of increasing aerosol concentration to achieve higher toxic exposure dose, there is a need for a device that generates high concentration aerosol, meeting the requirements of the dose tested in the evaluation research of the smoking safety of electronic cigarettes.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an above-mentioned problem among the solution prior art provides an electron cigarette tobacco juice aerosol supplies with and governing system.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an electronic cigarette smoke aerosol supply and regulation system, which comprises a peristaltic infusion pump, a thermal aerosol generator, a main controller and a dilution gas flowmeter;
the gas inlet of the thermal aerosol generator is connected with the dilution gas flowmeter through an aerosol dilution gas pipeline, and the amount of the dilution gas entering the thermal aerosol generator can be adjusted so as to adjust the concentration of the generated aerosol; the liquid inlet of the thermal aerosol generator is connected with a peristaltic infusion pump through an electronic cigarette liquid conveying pipe; the main controller is respectively electrically connected with the peristaltic infusion pump and the heating module in the thermal aerosol generator, and respectively controls the start-stop and transmission rate of the peristaltic infusion pump and the heating temperature of the heating module.
Further, an inlet of the peristaltic infusion pump is connected with the liquid storage device through a pipeline.
Further, the main controller comprises a connection port and a man-machine operation interface.
Further, the connection ports include a power input port, a heating output port, a peristaltic infusion pump connection port, and a temperature feedback input port.
Furthermore, the main controller is connected with the thermal aerosol generator through a heating output port, a temperature feedback input port to form a feedback regulation closed loop.
Further, the clean air is diluted by the dilution gas flow meter to form the aerosol dilution gas.
Furthermore, the electronic cigarette liquid conveying pipe is an electronic cigarette liquid conveying pipe and is connected with the peristaltic infusion pump and a high-temperature pipeline in the hot aerosol generator to convey the electronic cigarette liquid to the hot aerosol generator.
Furthermore, the electronic cigarette liquid conveying pipe is a hose made of silica gel.
A second aspect of the present invention provides a method of operating the electronic cigarette smoke aerosol supply and adjustment system, comprising the steps of:
step 2, starting a diluent gas flowmeter, and adjusting the flow of diluent gas;
and 3, starting the main controller and setting the heating temperature, and starting the peristaltic infusion pump to pump the electronic cigarette liquid in the sample storage into the thermal aerosol generator to generate aerosol when the temperature reaches the test target heating temperature.
Further, the transmission rate of the peristaltic infusion pump is 0-20 rpm.
Furthermore, the flow rate of the aerosol diluent gas is 0-50L/min.
Further, the start, stop and transmission rate of the peristaltic infusion pump are controlled or manually controlled by the main controller in step 3.
The above technical scheme is adopted in the utility model, compared with the prior art, following technological effect has:
the aerosol supply and regulation system provided by the utility model generates aerosol by heating, and continuously supplies samples at constant speed by the peristaltic infusion pump, so that the aerosol generator can continuously generate aerosol with stable and uniform concentration; in addition, the aerosol concentration can be adjusted by adjusting the delivery rate and the diluent gas flow rate of the peristaltic infusion pump. The particle size of the aerosol can be adjusted by adjusting the energy loaded by the main control unit, the requirement of inhalation exposure on the particle size of the aerosol is met, and the controllability of the inhalation dosage of animals is improved. The system can meet the requirement of safety evaluation of smoking and exposure of the cigarette liquid of the electronic cigarette, provides safety evaluation data and protects public health; an expensive smoking machine is not needed, and the research cost is greatly saved.
Drawings
Fig. 1 is a schematic diagram of a system for supplying and regulating aerosol of electronic cigarette smoke according to an embodiment of the present invention;
fig. 2 is a flow chart of an embodiment of the present invention during operation of the e-liquid aerosol provision and adjustment system;
wherein, 1-a main controller; 1 a-direct current heating output; 1 b-temperature feedback signal; 1 c-start-stop control signal; 2-peristaltic infusion pump; 2 a-an electronic cigarette liquid conveying pipe; 3-a liquid reservoir; 4-a diluent gas flow meter; 4 a-clean compressed air; 4 b-aerosol dilution gas line; 5-thermal aerosol generator; 5 a-an aerosol nozzle; 6-Aerosol.
Detailed Description
The utility model provides an electron cigarette tobacco juice aerosol supplies with and governing system.
The present invention will be described in detail and specifically with reference to specific embodiments so as to provide a better understanding of the present invention, but the following embodiments do not limit the scope of the present invention.
Example 1
This embodiment is right the structure of the aerosol supply and regulation system of the present invention is specifically described.
This aerosol supplies with governing system includes electron cigarette tobacco juice transport unit, hot type aerosol generator 5, main control unit 1, dilution gas flowmeter 4:
wherein, electron cigarette tobacco juice conveying unit includes peristaltic infusion pump 2, liquid delivery pipe 2a, reservoir 3, and peristaltic infusion pump 2 passes through the tube coupling with reservoir 3.
The gas inlet of the thermal aerosol generator 5 is connected with the dilution gas flowmeter 4 through an aerosol dilution gas pipeline 4b, and the amount of the dilution gas entering the thermal aerosol generator 5 can be adjusted so as to adjust the concentration of the generated aerosol; a liquid inlet of the thermal aerosol generator is connected with the peristaltic infusion pump 2 through an electronic cigarette liquid conveying pipe 2 a; the main controller 1 is respectively electrically connected with the peristaltic infusion pump 2 and the heating module in the thermal aerosol generator 5, and controls the closing state and the transmission rate of the peristaltic infusion pump 2 and the heating temperature of the heating module.
The electronic cigarette liquid conveying pipe 2a is made of a silica gel hose, is connected with the peristaltic infusion pump and a high-temperature pipeline in the thermal aerosol generator 5, and conveys the electronic cigarette liquid to the thermal aerosol generator 5.
The main controller 1 comprises a connection port and a man-machine operation interface; the connection ports comprise a power supply input port, a heating output port, a peristaltic infusion pump connection port and a temperature feedback input port. The human-machine interface is used for controlling the temperature of the thermal aerosol generator and the opening, closing and transmission rate of the peristaltic infusion pump.
The thermal aerosol generator 5 is disclosed in patent CN207126506U, which is granted to the applicant, and consists of a heating rod, a high temperature pipe, a thermocouple, a base and a housing. The middle section of the high-temperature pipeline spirally surrounds the heating end of the heating rod, and the wiring end of the heating rod is fixed on the base; the high-temperature pipeline penetrates through the base, and the inlet of the high-temperature pipeline and the outlet of the high-temperature pipeline are respectively positioned on two sides of the base; the working end of the thermocouple is tightly attached to the outer wall of the spiral part of the high-temperature pipeline and used for detecting the working temperature, and the wiring end of the thermocouple is fixed on the base; the shell and the base can be sleeved and assembled.
The main controller 1 is respectively connected with the thermocouple working end and the heating rod of the thermal aerosol generator 5 through the heating output port and the temperature feedback input port to form a feedback regulation closed loop.
The clean compressed air 4a forms aerosol dilution gas by the dilution effect of the gas dilution flow meter 4 and is introduced into the thermal aerosol generator 5, thereby achieving the effect of regulating the aerosol concentration.
Example 2
This example provides a method of operating the aerosol provision and conditioning system of example 1, comprising the steps of:
And 2, storing the electronic cigarette liquid in a liquid storage device 3, starting the peristaltic infusion pump 2, and setting the transmission rate of the peristaltic infusion pump 2.
And 3, starting the dilution gas flow meter 4, adjusting the flow of the aerosol dilution gas 4b, and enabling the clean compressed air 4a to generate the aerosol dilution gas 4 through the dilution gas flow meter 4 to enter the thermal aerosol generator 5 to dilute the aerosol 6.
Step 4, starting the main controller 1 and setting a heating temperature, and controlling the heating rod of the thermal aerosol generator 5 to be heated through a heating output 1a circuit; when the temperature reaches the heating temperature of the test target, the main controller starts the peristaltic infusion pump 2 through the start-stop control signal 1c line to enable the electronic cigarette smoke liquid in the sample storage device 3 to be pumped into the high-temperature pipeline of the thermal aerosol generator 5 through the electronic cigarette smoke liquid delivery pipe 2a, the temperature of the liquid rises sharply at the moment, the liquid reaches the boiling point within a short time and is converted into steam, the saturated steam is sprayed out from the aerosol nozzle 5a in a large amount at the moment, and the liquefaction reaction can be carried out when the liquid meets the cold air to form aerosol 6. The detected temperature is fed back and input into the main controller through the heating temperature feedback circuit 1b by the thermocouple working end of the thermal aerosol generator 5, and the heating temperature is kept constant by the main controller through a closed-loop feedback control mode so as to achieve the purpose of ensuring continuous and stable generation of aerosol.
And 5, collecting the aerosol by adopting a glass fiber filter membrane, and calculating the aerosol concentration of the tested object by the weight difference before and after sampling and the air exhaust flow speed during the collection of the aerosol. Determining a scheme for adjusting the aerosol concentration according to the difference between the measured aerosol concentration and the target concentration:
if the aerosol concentration is greater than the target concentration, the aerosol concentration can be reduced by reducing the electronic cigarette liquid transmission speed of the peristaltic infusion pump or increasing the flow rate of the diluent gas, and if the aerosol concentration is less than the target concentration, the aerosol concentration can be increased by increasing the electronic cigarette liquid transmission speed of the peristaltic infusion pump or reducing or closing the flow rate of the diluent gas.
The electronic cigarette liquid conveying speed is increased to a certain value, although the supply amount of the electronic cigarette liquid is increased, the aerosol generating unit cannot finish atomizing all transmitted supplied samples, the transmission speed of the peristaltic infusion pump corresponding to the amount of the supplied samples just can be completely atomized is the maximum transmission speed of the electronic cigarette liquid, the atomization efficiency of the generator is highest, and the concentration of the generated aerosol is maximum.
The larger the aerosol dilution gas flow, the lower the aerosol concentration generated by the thermal aerosol generator, whereas the smaller the aerosol dilution gas flow, the higher the aerosol concentration generated by the thermal aerosol generator.
The above detailed description of the embodiments of the present invention is only for exemplary purposes, and the present invention is not limited to the above described embodiments. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, variations and modifications in equivalents may be made without departing from the spirit and scope of the invention, which is intended to be covered by the following claims.
Claims (9)
1. An electronic cigarette smoke aerosol supply and regulation system is characterized by comprising a peristaltic infusion pump (2), a thermal aerosol generator (5), a main controller (1) and a dilution gas flowmeter (4);
the gas inlet of the thermal aerosol generator (5) is connected with the dilution gas flowmeter (4) through an aerosol dilution gas pipeline (4b), and the amount of dilution gas entering the thermal aerosol generator (5) can be adjusted; a liquid inlet of the thermal aerosol generator (5) is connected with the peristaltic infusion pump (2) through an electronic cigarette liquid conveying pipe (2 a); the device is characterized in that the main controller (1) is respectively electrically connected with the peristaltic infusion pump (2) and the heating module in the thermal aerosol generator (5), and the main controller (1) respectively controls the closing state and the transmission rate of the peristaltic infusion pump (2) and the heating temperature of the heating module.
2. The e-liquid aerosol provision and conditioning system of claim 1, wherein the inlet of the peristaltic infusion pump (2) is connected to the reservoir (3) by a tube.
3. The e-liquid aerosol provision and adjustment system of claim 1, wherein the main controller (1) comprises a connection port and a human machine interface.
4. The e-liquid aerosol provision and conditioning system of claim 3, wherein the connection ports comprise a power input port, a heating output port, a peristaltic infusion pump connection port, and a temperature feedback input port.
5. The e-liquid aerosol provision and conditioning system of claim 4, wherein the main controller (1) is connected to form a feedback conditioning closed loop via the heating output port, the temperature feedback input port, and the thermal aerosol generator (5).
6. The e-liquid aerosol provision and conditioning system of claim 1, wherein clean compressed air (4a) is diluted by the dilution gas flow meter (4) to form the aerosol dilution gas.
7. The e-cigarette smoke aerosol supply and conditioning system according to claim 1, wherein the e-cigarette smoke delivery pipe (2a) is an e-cigarette smoke delivery pipe, and high temperature piping in the peristaltic infusion pump (2) and the thermal aerosol generator (5) is connected to convey e-cigarette smoke into the thermal aerosol generator (5).
8. The e-liquid aerosol provision and conditioning system of claim 1, wherein the peristaltic infusion pump (2) has a delivery rate of 0 to 20 rpm.
9. The e-liquid aerosol provision and conditioning system of claim 1, wherein the flow rate of the aerosol dilution gas line (4b) is 0 to 50L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922481826.5U CN212674946U (en) | 2019-12-31 | 2019-12-31 | System for supplying and adjusting aerosol of electronic cigarette smoke liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922481826.5U CN212674946U (en) | 2019-12-31 | 2019-12-31 | System for supplying and adjusting aerosol of electronic cigarette smoke liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212674946U true CN212674946U (en) | 2021-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922481826.5U Withdrawn - After Issue CN212674946U (en) | 2019-12-31 | 2019-12-31 | System for supplying and adjusting aerosol of electronic cigarette smoke liquid |
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|---|---|
| CN (1) | CN212674946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111077296A (en) * | 2019-12-31 | 2020-04-28 | 上海市食品药品检验所 | Aerosol supply and regulation system and application thereof in electronic cigarette liquid inhalation exposure safety evaluation |
-
2019
- 2019-12-31 CN CN201922481826.5U patent/CN212674946U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111077296A (en) * | 2019-12-31 | 2020-04-28 | 上海市食品药品检验所 | Aerosol supply and regulation system and application thereof in electronic cigarette liquid inhalation exposure safety evaluation |
| CN111077296B (en) * | 2019-12-31 | 2023-10-27 | 上海市食品药品检验研究院 | Aerosol supply and adjustment system and application thereof in electronic cigarette liquid inhalation exposure safety evaluation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200120 No. 1500 Zhangheng Road, Pudong New Area, Shanghai Patentee after: Shanghai Institute for food and drug control Patentee after: SHANGHAI MEILI EXPERIMENT TECHNOLOGY Co.,Ltd. Address before: 200120 No. 1500 Zhangheng Road, Pudong New Area, Shanghai Patentee before: SHANGHAI INSTITUTE FOR FOOD AND DRUG CONTROL Patentee before: SHANGHAI MEILI EXPERIMENT TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20210309 Effective date of abandoning: 20231027 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20210309 Effective date of abandoning: 20231027 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |