CN114304717A

CN114304717A - Method for generating aerosol by adopting ultrafine powder

Info

Publication number: CN114304717A
Application number: CN202210166895.0A
Authority: CN
Inventors: 吴景强; 庒志強; 付宇; 朱伯和
Original assignee: Yunnan Jingli New Material Technology Co ltd
Current assignee: Yunnan Jingli New Material Technology Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-04-12

Abstract

A method for generating aerosol by ultrafine powder comprises mixing one or more of tobacco extract, plant extract, and tobacco essence to obtain liquid or paste aerosol precursor; then preparing the aerosol precursor into aerosol precursor solid powder with the grain diameter of 1-10 mu m by adopting a spray drying method; and preparing an aerosol generating device, filling the prepared aerosol precursor ultrafine powder into a powder pipe of the aerosol generating device, electrifying to heat a resistance wire of the aerosol generating device, then sucking, mixing the aerosol precursor ultrafine powder and gas in a mixed heating pipe of the aerosol generating device to form a dispersed suspension state, liquefying the fine powder by high-temperature gas in the mixed heating pipe to form liquid particle aerosol, and then entering the oral cavity of a person to be sucked through a suction nozzle. The invention can uniformly heat the smoke substances, has stable smoke gas, greatly improves the smoking feeling, has low heating temperature, does not generate redundant harmful substances, has good tar and harm reducing effects, can reduce the loss of tobacco substances and generates rich smoke gas.

Description

Method for generating aerosol by adopting ultrafine powder

Technical Field

The invention belongs to the technical field of tobacco aerosol generation methods.

Background

The smoke generated by the heating combustion of tobacco is the tobacco aerosol which is the aerosol with liquid suspended particles. The suspended fine particles are formed by aggregating molecules of various organic and inorganic substances, and have an average diameter of about 0.2 to 0.4 μm and a particle concentration of 1.1X 10⁹～2.2×10⁹/cm³。

The existing tobacco is mainly divided into two types of traditional cigarettes and novel tobacco, the novel tobacco comprises an electronic cigarette and a heating cigarette, the smoking principle of the traditional cigarette, namely the aerosol generation principle, is that tobacco shreds are ignited, tobacco substances generate aerosol (smoke) through combustion and high-temperature distillation, a large amount of tobacco substances are combusted, the tobacco shreds are used as fuel to provide heat on one hand, and are also used as raw materials for generating the aerosol on the other hand, the aerosol generation method has the following defects that the heating temperature is high, a large amount of harmful substances are generated at the temperature of 600-900 ℃, and the tobacco substances are required to be combusted to be used as a heat source, so that the raw materials are wasted. The aerosol generation principle of the electronic cigarette is that the mixture of smoke agents such as PG/VG and the like, essence, spice and nicotine is firstly prepared into tobacco tar, the tobacco tar is directly gasified after being heated to generate smoke, and the aerosol generation method has the following defects: firstly, exogenous substances such as a smoke agent and the like need to be heated for generating smoke, potential safety hazards exist, and secondly, the smoke richness is not enough, and the satisfaction is not enough. The aerosol generating principle of the heated cigarette is that tobacco substances are mixed with smoke agents such as PG/VG and the like, essence, spice, nicotine and the like to obtain smoke materials in different shapes such as sheets, particles and threads, and a heating device is adopted to directly heat the smoke materials to obtain smoke. The defects that the smoke is released and attenuated seriously by mouth, the fragrance of the front mouths is enough, the fragrance of the back mouths is attenuated seriously, and the feeling is influenced exist.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a method for generating aerosol by adopting ultrafine powder, which can uniformly heat smoke substances, has stable smoke gas by mouth, greatly improves the smoking feeling, has low heating temperature, does not generate redundant harmful substances, has good tar and harm reducing effects, can reduce the loss of tobacco substances and generates rich smoke gas.

The technical scheme adopted by the invention is as follows:

a method for generating aerosol by using ultrafine powder comprises the following steps:

step 1, preparing an aerosol precursor: mixing one or more of tobacco extract, plant extract and tobacco essence to obtain liquid or paste aerosol precursor;

step 2, preparing aerosol precursor superfine powder: preparing the aerosol precursor into aerosol precursor solid powder with the particle size of 1-10 mu m by adopting a spray drying method;

step 3, generating aerosol: firstly, preparing an aerosol generating device, wherein the aerosol generating device comprises a powder pipe (1) and a mixed heating pipe (2) which are connected with each other, two ends of the powder pipe (1) are respectively provided with a powder pipe air inlet hole (1a) and a powder pipe air outlet hole (1b), two ends of the mixed heating pipe (2) are respectively provided with a heating pipe air inlet hole (2a) and a heating pipe air outlet hole (2b), the powder pipe air outlet hole is connected with a heating pipe air inlet hole, a first one-way air valve (1c) is arranged on the powder pipe air inlet hole (1a), and a second one-way air valve (2d) is arranged on the heating pipe air inlet hole (2 a); a heating resistance wire (2c) is arranged on the tube wall of the mixed heating tube, a power supply shell (3) internally provided with a battery (4) and a power supply board (5) is arranged at the outer end of the powder tube, two ends of the heating resistance wire (2c) are respectively connected with the anode and the cathode of the power supply board, and a through hole (3a) is formed in the side wall of the power supply shell connected with one end of the powder tube; the outer end of the mixed heating pipe (2) is connected with a suction nozzle (6), prepared aerosol precursor ultrafine powder is filled in the powder pipe, a power switch is turned on, a heating resistance wire is electrified, then the aerosol precursor ultrafine powder is sucked from the suction nozzle, airflow enters from the through hole (3a), then enters the powder pipe from the first one-way air valve (1c), the aerosol precursor ultrafine powder in the powder pipe is sucked into the mixed heating pipe through the powder pipe air outlet hole (1b) and the second one-way air valve (2d), the fine powder and the gas are mixed in a dispersed suspension state in the mixed heating pipe, the high-temperature gas in the mixed heating pipe liquefies the fine powder to form liquid particle aerosol, and then the liquid particle aerosol enters the oral cavity of a person to be sucked through the suction nozzle.

The tobacco extract is tobacco extract or tobacco absolute. The plant extract is natural plant extract or natural plant absolute oil. The tobacco essence perfume is one or more essence perfumes which can be added into cigarettes according to the standard requirements of the tobacco industry. The battery (4) is a lithium battery, and the power panel (5) is a PCBA board.

The aerosol-generating method of the invention has the following advantages:

1. the smoke generating substances can be uniformly heated, the smoke generated by opening the mouth is stable, and the suction feeling is greatly improved;

2. the aerosol precursor superfine powder is heated by a mixed heating pipe heated by a resistance wire, the aerosol precursor superfine powder can be liquefied to form aerosol at a lower heating temperature, the heating temperature is low, no redundant harmful substances are generated, and tar and harm can be effectively reduced;

3. effectively saving tobacco materials, reducing the loss of the tobacco materials and simultaneously generating richer smoke.

Drawings

Figure 1 is a schematic view of an embodiment of an aerosol-generating appliance;

fig. 2 is a schematic view of the powder tube and the mixing-heating tube separated.

Detailed Description

The invention is further explained by the accompanying drawings.

Example 1

step 1, preparing an aerosol precursor: firstly, mixing the tobacco extract and the tobacco flavor and fragrance to obtain a liquid aerosol precursor. The tobacco extract is tobacco extract or tobacco absolute. The tobacco essence perfume is any one or more of essence perfumes which can be added into cigarettes according to the standard requirements of the tobacco industry. The tobacco essence used in this example is tobacco extract, and the tobacco essence flavor used in this example is mint essence.

Step 2, preparing aerosol precursor superfine powder: the aerosol precursor is prepared into aerosol precursor solid powder with the grain diameter of 1-5 microns by adopting a spray drying system in the prior art.

Step 3, generating aerosol: firstly, an aerosol generating device is prepared, wherein the aerosol generating device is shown in fig. 1 and comprises a powder pipe 1 and a mixed heating pipe 2 which are connected with each other, two ends of the powder pipe 1 are respectively provided with a powder pipe air inlet 1a and a powder pipe air outlet 1b, two ends of the mixed heating pipe 2 are respectively provided with a heating pipe air inlet 2a and a heating pipe air outlet 2b, the powder pipe air outlet is connected with a heating pipe air inlet, the powder pipe air inlet 1a is provided with a first one-way air valve 1c, and the heating pipe air inlet 2a is provided with a second one-way air valve 2 d. The one-way air valve adopts the components in the prior art and can be directly purchased. The one-way air valve is closed when the aerosol-generating device is not in use. The pipe wall of the mixed heating pipe is provided with a heating resistance wire 2c, the outer end of the powder pipe is connected with a power supply shell 3, a power supply board 5 and a battery 4 for supplying power to the power supply board are arranged in the power supply shell, and two ends of the heating resistance wire 2c are respectively connected with the positive pole and the negative pole of the power supply board. The heating resistance wire can be wound outside the pipe wall of the mixed heating pipe or arranged in the pipe wall. The power board 5 directly purchases an existing PCBA board. A power switch is arranged on the power supply shell. The assembly and connection of the power switch, power board and battery are prior art and will not be described herein. The side wall of one end of the power supply shell connected with the powder tube is provided with a through hole 3a, and the through hole can be only one or can be arranged around the shell. The outer end of the mixing and heating pipe 2 is connected with a suction nozzle 6. The suction nozzle is directly formed by the suction nozzle in the prior art. Filling the prepared aerosol precursor superfine powder into a powder pipe, turning on a power switch, electrifying a heating resistance wire, sucking by a suction nozzle in the mouth of a smoker, sucking airflow from the through hole 3a, opening a first one-way valve and a second one-way valve under the action of negative pressure, allowing the airflow to enter the powder pipe from a first one-way air valve 1c, sucking the aerosol precursor superfine powder in the powder pipe into a mixed heating pipe through a powder pipe air outlet hole 1b and a second one-way air valve 2d, mixing the fine powder and the gas in the mixed heating pipe into a dispersed suspension state, liquefying the fine powder by high-temperature gas in the mixed heating pipe, forming liquid particle aerosol, and then allowing the liquid particle aerosol to enter the oral cavity of the smoker through a heating pipe air outlet hole 2b and an air passage 6a of the suction nozzle.

Example 2

step 1, preparing an aerosol precursor: mixing the tobacco extract, the plant extract and the tobacco flavor and fragrance to obtain a liquid or paste aerosol precursor. The tobacco extract is a tobacco extract or tobacco absolute, the plant extract is a natural plant extract or natural plant absolute, and the tobacco essence and flavor can be any one or more than one of the essence and flavor which can be added into cigarettes according to the tobacco industry standard requirements. In the embodiment, the tobacco extract is tobacco absolute, the plant extract is citron extract, and the tobacco essence perfume is green tea essence.

Step 2, preparing aerosol precursor superfine powder: the aerosol precursor is prepared into aerosol precursor solid powder with the grain diameter of 4-10 mu m by adopting a spray drying method.

Step 3, generating aerosol: the procedure is as in example 1.

Example 3

A method for generating aerosol by using ultrafine powder comprises the following steps: the tobacco extract is prepared into aerosol precursor solid powder with the grain diameter of 3-8 mu m by adopting a spray drying method, and then the aerosol is generated by adopting the method in the same example 1.

The tobacco extract, the plant extract and the tobacco flavor and fragrance used in the invention are all available in the market.

Claims

1. A method for generating aerosol by using ultrafine powder is characterized by comprising the following steps:

2. The method of claim 1, wherein the tobacco extract is tobacco extract or tobacco absolute.

3. The method of claim 1, wherein the plant extract is natural plant extract or natural plant absolute.

4. The method for generating the aerosol by adopting the ultrafine powder as claimed in claim 1, wherein the tobacco flavor is one or more flavors and fragrances which can be added into cigarettes according to the tobacco industry standard requirements.

5. A method of generating aerosol using ultra fine powder according to claim 1, 2 or 3, characterized in that the battery (4) is a lithium battery and the power board (5) is a PCBA board.