Extensible multi-channel aerosol atomization device

Abstract

An extensible multi-channel aerosol atomization device comprises an atomization cavity, a plurality of piezoelectric ceramic atomization pieces are installed at the bottom of the atomization cavity, the piezoelectric ceramic atomization pieces are connected with a direct-current power source through piezoelectric ceramic atomization piece circuits, a water medium is contained in the atomization cavity, and the atomization cavity is connected with a cooling circulation device through a cooling water pipeline. The atomizing chamber comprises an end cover which is used for fixing a plurality of tubular containers for containing different types of materials to be atomized; the tubular container is connected with an outlet of a carrier gas control valve through a carrier gas pipeline, and an inlet of the carrier gas control valve is connected with a carrier gas source through a carrier gas inlet pipeline; the tubular container is connected with an inlet of an atomized gas control valve through an atomized gas pipeline, and an outlet of the atomized gas control valve is connected with the conveying-printing device; the carrier gas control valve and the atomization gas control valve are controlled to realize atomization of various materials in the atomization chamber as required, so that the multi-material connection period during multi-material aerosol jet printing is shortened, mutual pollution among the materials is avoided, and efficient integrated printing is realized.

Description

Technical Field

[0001] The invention relates to the technical field of aerosol jet printing atomization devices, and in particular to an expandable multi-channel aerosol atomization device. Background Art

[0002] Aerosol jet printing is an emerging non-contact advanced manufacturing technology that achieves an economical and efficient high-precision printing process by controlling and confining the transmission and deposition of micro-droplets. The basic principle is that the solution or suspension is atomized in the atomization device to form aerosol droplets, and the carrier gas transports the aerosol droplets to the printing nozzle. The aerosol droplets are constrained by the annular confinement gas (sheath gas) in the printing head to form a micron-wide jet. Finally, the aerosol droplets are confined and deposited on the substrate surface to form a micron-level feature size. Aerosol jet printing nozzles are not easy to clog and pollute, have good compatibility with substrate materials, high alignment accuracy, high printing resolution, and small single-layer thickness. They have great potential in the manufacturing of flexible sensors, wearable electronic devices, and curved conformal antennas.

[0003] The patent application named "An automatic atomization device suitable for aerosol inkjet printing" (publication number CN118617859A) can achieve a good atomization effect by controlling the carrier gas pressure regulating valve and the test tube automatic regulating device. However, it needs to adjust the resonance position of the ink and the ultrasonic system during the printing process to achieve ink atomization, which affects the printing quality and printing stability to a certain extent. In addition, its structure is relatively complex and cannot achieve multi-material printing. The patent application named "An aerosol jet printing device and additive manufacturing system" (publication number CN220052900U) stabilizes the air pressure intensity in the atomization chamber within the set threshold range through sensors and exhaust valves to ensure the printing quality of the aerosol jet printing device. However, its atomization gas delivery pipeline is too long, and the atomization gas easily forms droplets on the pipe wall, which has the risk of contaminating the print head. The patent application entitled "An adjustable aerosol generating device, jet printing device and method" (publication number CN117484862A) adjusts the angle of the atomizing chamber by rotating a rotating rod, so that the size range of the delivered aerosol droplets is more concentrated and the distribution of droplets in the unit space is more uniform. However, it transports the atomized material into the atomizing chamber for atomization through multiple parallel tubular containers, which poses a risk of cross-contamination of materials.

[0004] In summary, most of the existing aerosol atomization devices are based on a single material. When switching between multiple materials, the material needs to be replaced and the device needs to be cleaned, resulting in a long connection cycle. In addition, contamination is prone to occur between multiple materials. At present, there is still a lack of an atomization device that can effectively achieve stable atomization and rapid switching of multiple materials. Summary of the invention

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an expandable multi-channel aerosol atomization device to achieve stable atomization and rapid switching of multiple materials without contamination between the multiple materials.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] An expandable multi-channel aerosol atomization device comprises an atomization chamber 1, a plurality of piezoelectric ceramic atomization sheets 2 are arranged at the bottom of the atomization chamber 1, the piezoelectric ceramic atomization sheets 2 are connected to a direct current power supply through a piezoelectric ceramic atomization sheet circuit 2-1, an aqueous medium is contained in the atomization chamber 1, and the atomization chamber 1 is connected to a cooling circulation device through a cooling water pipeline 4; the atomization chamber 1 comprises an end cover 1-1, which is used to fix a plurality of tubular containers 3 containing different kinds of materials to be atomized; the tubular containers 3 are connected to the outlet of a carrier gas control valve 6 through a carrier gas pipeline 5, and the inlet of the carrier gas control valve 6 is connected to a carrier gas source through a carrier gas inlet pipeline 7; the tubular container 3 is connected to the inlet of an atomizing gas control valve 9 through an atomizing gas pipeline 8, and the outlet of the atomizing gas control valve 9 is connected to a conveying-printing device.

[0008] The tubular container 3 includes a tubular container body 3-2 and a tubular container bottom cover 3-1 and a tubular container top cover 3-3 connected thereto; a PI film 3-1-1 is installed in the tubular container bottom cover 3-1, and the PI film 3-1-1 realizes high-throughput atomization; the tubular container top cover 3-3 is provided with a carrier gas inlet 3-3-1, an atomizing gas outlet 3-3-2 and an atomizing gas guide plate 3-3-3, the carrier gas inlet 3-3-1 is connected to the carrier gas pipeline 5, the atomizing gas outlet 3-3-2 is connected to the atomizing gas pipeline 8, and the atomizing gas guide plate 3-3-3 has a vertical section, which is used to guide the atomizing gas to the atomizing gas outlet 3-3-2 and prevent the atomizing gas from forming a liquid film to block the aerosol passage.

[0009] The end cover 1-1 is connected to a plurality of tubular containers 3 via a through hole 1-1-1; a fixing port 1-1-2 is provided on the end cover 1-1, and the fixing port 1-1-2 is used to fix the tubular container 3 by a set screw and to adjust the distance between the bottom cover 3-1 of the tubular container and the piezoelectric ceramic atomizing sheet 2 to achieve a better atomization effect.

[0010] The atomization chamber 1 is expandable, and the number of piezoelectric ceramic atomization sheets 2 at the bottom of the atomization chamber 1 and the number of through holes 1-1-1 of the end cover 1-1 of the atomization chamber 1 can be increased as needed, thereby increasing the types of atomization materials.

[0011] The inlet of the carrier gas control valve 6 is a carrier gas inlet end 6-1, which is connected to the carrier gas inlet pipe 7; the outlet of the carrier gas control valve 6 is a plurality of carrier gas outlet ends, which are respectively connected to the tubular container 3 filled with different atomizing materials through the carrier gas pipe 5; the carrier gas control valve 6 is switched between the plurality of carrier gas outlet ends through circuit signal control to realize the switching of carrier gas input of different atomizing materials.

[0012] The inlet of the atomizing gas control valve 9 is provided with a plurality of atomizing gas inlet ends, and the plurality of atomizing gas inlet ends are respectively connected to the tubular container 3 containing different atomizing materials through the atomizing gas pipeline 8; the outlet of the atomizing gas control valve 9 is a conveying gas outlet end 9-3, and the conveying gas outlet end 9-3 is connected to the conveying pipeline 11; the atomizing gas control valve 9 is switched among the plurality of atomizing gas inlet ends through circuit signal control, so as to realize the switching of atomizing gas output of different materials and prevent mutual contamination between different atomizing materials.

[0013] The expandable multi-channel aerosol atomization device realizes on-demand atomization of multiple materials in the atomization chamber 1 by controlling the carrier gas control valve 6 and the atomizing gas control valve 9, shortens the cycle of multiple material connection during multi-material aerosol jet printing, and avoids mutual contamination between multiple materials.

[0014] The conveying-printing device includes a Y-shaped tee 10, the inlet of the Y-shaped tee 10 is connected to the outlet of the atomizing gas control valve 9 through a conveying pipeline 11, the outlet of the Y-shaped tee 10 is connected to the inlet of the printing nozzle on-off valve 12 through the conveying pipeline 11, the outlet of the printing nozzle on-off valve 12 is connected to the printing nozzle 13, and the printing nozzle 13 is connected to the sheath gas source through a sheath gas pipeline 14.

[0015] The bottom of the Y-shaped tee 10 is connected to the liquid storage bottle 10-1. During the aerosol transportation process, the droplets attached to the wall of the transportation pipe 11 and gathered enter the liquid storage bottle 10-1 at the bottom of the Y-shaped tee 10 due to gravity, and the aerosol flow circulates in the upper part of the Y-shaped tee 10 to achieve the separation of the droplets and the aerosol flow.

[0016] The inlet of the print head on-off valve 12 is the conveying gas inlet end 12-1, and the conveying gas inlet end 12-1 is connected to the conveying pipeline 11; the outlet of the print head on-off valve 12 is the printing gas outlet end 12-2, and the printing gas outlet end 12-2 is connected to the print head 13; the print head on-off valve 12 is provided with an air outlet end 12-3, and the air outlet end 12-3 is installed with filter cotton for filtering aerosol particles discharged into the air to reduce pollution to the environment; the print head on-off valve 12 is switched between the conveying gas inlet end 12-1 and the printing gas outlet end 12-2 through circuit signal control to realize the on-off of the print head 13.

[0017] The piezoelectric ceramic atomizer sheet 2 is based on the ultrasonic atomization principle, with a rated voltage of 5V-60V, a rated current of 0.2A-5A, and an operating frequency of 0.1MHz-8MHz.

[0018] The carrier gas pressure ranges from 1 sccm to 500 sccm, and the sheath gas pressure ranges from 10 sccm to 2000 sccm.

[0019] The tube-shaped container 3 is loaded with metal inks of gold, silver, copper, nickel, platinum, non-metallic conductor inks of carbon nanotubes and PEDOT:PSS, and non-metallic polymer inks of PI.

[0020] The thickness of the PI film 3-1-1 is 5 μm-100 μm.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention uses an expandable atomization chamber, which can increase the types of atomized materials as needed, which is conducive to the realization of multi-material aerosol jet printing; by reasonably controlling the carrier gas control valve and the atomizing gas control valve, the on-demand atomization of multiple materials in the atomization chamber can be achieved, which helps to shorten the cycle of multi-material connection during multi-material aerosol jet printing, avoid mutual contamination between multiple materials, and realize efficient integrated printing.

[0023] 2. The bottom cover of the tubular container of the present invention is equipped with a PI film, which has good acoustic impedance matching with the aqueous medium contained in the atomization chamber, is conducive to the energy transfer of the sound field, can achieve better atomization effect, and realize high-throughput atomization; the atomization gas guide plate of the top cover of the tubular container has a vertical section, which is used to guide the atomization gas to the atomization gas outlet and prevent the atomization gas from forming a liquid film to block the aerosol passage, thereby realizing high-efficiency transportation.

[0024] 3. The conveying-printing device of the present invention uses a liquid storage bottle connected to the bottom of the Y-shaped tee to use gravity to filter the droplets that adhere to the tube wall and gather during the aerosol conveying process, thereby separating the droplets from the aerosol flow, avoiding contamination of the printing nozzle, and ensuring the feasibility of long-distance transportation; the printing process can be started and stopped by the printing nozzle on-off valve, which is conducive to the implementation of multi-material aerosol jet printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the overall structure of the atomization device according to an embodiment of the present invention.

[0026] Figure 2 It is a schematic diagram of the structure of the atomization part of an embodiment of the present invention.

[0027] Figure 3 Schematic diagram of an atomization chamber according to an embodiment of the present invention.

[0028] Figure 4 Schematic diagram of the end cover of the atomization chamber and the tubular container according to an embodiment of the present invention.

[0029] Figure 5 Schematic diagram of a carrier gas control valve according to an embodiment of the present invention.

[0030] Figure 6 Schematic diagram of an atomizing gas control valve according to an embodiment of the present invention.

[0031] Figure 7 Schematic diagram of the bottom cover of a tubular container according to an embodiment of the present invention.

[0032] Figure 8 Schematic diagram of the top cover of a tubular container according to an embodiment of the present invention.

[0033] Fig. 9 It is a schematic diagram of the structure of the conveying-printing device according to an embodiment of the present invention.

[0034] Fig.10 Schematic diagram of the aerosol filtering process using a Y-type tee and a liquid storage bottle in an embodiment of the present invention.

[0035] Fig.11 This is a comparison diagram of the atomization of two materials in the embodiment of the present invention.

[0036] Fig.12 This is a schematic diagram of the pipeline before filtration and the pipeline after filtration in an embodiment of the present invention. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the embodiments of the present invention and the accompanying drawings.

[0038] Reference Figure 1 , Figure 2 , Figure 3, an expandable multi-channel aerosol atomization device, comprising an atomization chamber 1, a plurality of piezoelectric ceramic atomization sheets 2 are arranged at the bottom of the atomization chamber 1 for partitioning atomization printing materials; the piezoelectric ceramic atomization sheets 2 are connected to a DC power supply through a piezoelectric ceramic atomization sheet circuit 2-1, and the DC power supply is used to control the atomization power and thus the atomization amount; the atomization chamber 1 contains a water medium for acoustic field transmission, and the atomization chamber 1 is connected to a cooling circulation device through a cooling water pipeline 4, and the cooling circulation device is used to provide heat dissipation; the atomization chamber 1 includes an end cover 1-1 for fixing a plurality of tubular containers 3 containing different types of materials to be atomized; the tubular container 3 is connected to an outlet of a carrier gas control valve 6 through a carrier gas pipeline 5, and an inlet of the carrier gas control valve 6 is connected to a carrier gas pipeline 5. The gas inlet pipeline 7 is connected to the carrier gas source, and the carrier gas pressure range is 1sccm-500sccm; the tubular container 3 is connected to the inlet of the atomizing gas control valve 9 through the atomizing gas pipeline 8, and the outlet of the atomizing gas control valve 9 is connected to the conveying-printing device; the conveying-printing device includes a Y-type tee 10, the inlet of the Y-type tee 10 is connected to the outlet of the atomizing gas control valve 9 through the conveying pipeline 11, the outlet of the Y-type tee 10 is connected to the inlet of the print head on-off valve 12 through the conveying pipeline 11, the outlet of the print head on-off valve 12 is connected to the print head 13, and the print head 13 is connected to the sheath gas source through the sheath gas pipeline 14, and the sheath gas pressure range is 10sccm-2000sccm.

[0039] The piezoelectric ceramic atomizer sheet 2 is based on the ultrasonic atomization principle, with a rated voltage of 5V-60V, a rated current of 0.2A-5A, and an operating frequency of 0.1MHz-8MHz.

[0040] Reference Figure 4 The end cap 1-1 is connected to a plurality of tubular containers 3 through a through hole 1-1-1; the tubular containers 3 are loaded with metal inks such as gold, silver, copper, nickel, platinum, etc., non-metallic conductor inks such as carbon nanotubes, PEDOT:PSS, and non-metallic polymer inks such as PI.

[0041] The end cover 1-1 is provided with a fixing port 1-1-2, which fixes the tubular container 3 by means of a set screw and adjusts the distance between the bottom cover 3-1 of the tubular container and the piezoelectric ceramic atomizing sheet 2, thereby achieving a better atomization effect.

[0042] Reference Figure 2 , Figure 4 The atomization chamber 1 is expandable. The number of piezoelectric ceramic atomization sheets 2 at the bottom of the atomization chamber 1 and the number of through holes 1-1-1 of the end cover 1-1 of the atomization chamber 1 can be increased as needed, thereby increasing the types of atomized materials, which is conducive to the realization of multi-material aerosol jet printing.

[0043] Reference Figure 5The inlet of the carrier gas control valve 6 is a carrier gas inlet end 6-1, which is connected to a carrier gas inlet pipe 7; the outlet of the carrier gas control valve 6 is a first carrier gas outlet end 6-2 and a second carrier gas outlet end 6-3, which are respectively connected to a tubular container 3 filled with different atomizing materials through a carrier gas pipe 5; the carrier gas control valve 6 is switched between the first carrier gas outlet end 6-2 and the second carrier gas outlet end 6-3 through circuit signal control to realize the switching of carrier gas input of different atomizing materials.

[0044] Reference Figure 6 The inlet of the atomizing gas control valve 9 is provided with a first atomizing gas inlet end 9-1 and a second atomizing gas inlet end 9-2, and the first atomizing gas inlet end 9-1 and the second atomizing gas inlet end 9-2 are respectively connected to the tubular container 3 containing different atomizing materials through the atomizing gas pipeline 8; the outlet of the atomizing gas control valve 9 is a conveying gas outlet end 9-3, and the conveying gas outlet end 9-3 is connected to the conveying pipeline 11; the atomizing gas control valve 9 is switched between the first atomizing gas inlet end 9-1 and the second atomizing gas inlet end 9-2 through circuit signal control, so as to realize the switching of atomizing gas output of different materials and prevent mutual contamination between different atomizing materials.

[0045] Reference Figure 2 , Figure 5 , Figure 6 The expandable multi-channel aerosol atomization device can realize on-demand atomization of multiple materials in the atomization chamber 1 by controlling the carrier gas control valve 6 and the atomizing gas control valve 9, which helps to shorten the cycle of multi-material connection during multi-material aerosol jet printing, avoid mutual contamination between multiple materials, and realize efficient integrated printing.

[0046] Reference Figure 4 , Figure 7 , Figure 8 The tubular container 3 includes a tubular container body 3-2 and a tubular container bottom cover 3-1 and a tubular container top cover 3-3 connected thereto; a PI film 3-1-1 is installed in the tubular container bottom cover 3-1, and its thickness is 5μm-100μm. The PI film 3-1-1 has good acoustic impedance matching with the aqueous medium, which is conducive to the energy transfer of the sound field, can achieve better atomization effect, and realize high-throughput atomization; the tubular container top cover 3-3 is provided with a carrier gas inlet 3-3-1, an atomizing gas outlet 3-3-2 and an atomizing gas guide plate 3-3-3, the carrier gas inlet 3-3-1 is connected to the carrier gas pipeline 5, the atomizing gas outlet 3-3-2 is connected to the atomizing gas pipeline 8, and the atomizing gas guide plate 3-3-3 has a vertical section, which is used to guide the atomizing gas to the atomizing gas outlet 3-3-2 and prevent the atomizing gas from forming a liquid film to block the aerosol passage, so as to realize high-efficiency transportation.

[0047] Reference Fig. 9 , Fig.10 The bottom of the Y-type tee 10 is connected to the liquid storage bottle 10-1. During the aerosol transportation process, the droplets attached to the wall of the transportation pipe 11 and gathered enter the liquid storage bottle 10-1 at the bottom of the Y-type tee 10 due to gravity. The aerosol flow circulates in the upper part of the Y-type tee 10 to achieve separation of the droplets and the aerosol flow, avoid contamination of the printing nozzle 13, and ensure the feasibility of long-distance transportation.

[0048] The inlet of the print head on-off valve 12 is the conveying gas inlet end 12-1, and the conveying gas inlet end 12-1 is connected to the conveying pipeline 11; the outlet of the print head on-off valve 12 is the printing gas outlet end 12-2, and the printing gas outlet end 12-2 is connected to the print head 13; the print head on-off valve 12 is provided with an air outlet end 12-3, and the air outlet end 12-3 is installed with filter cotton for filtering aerosol particles discharged into the air to reduce pollution to the environment; the print head on-off valve 12 is switched between the conveying gas inlet end 12-1 and the printing gas outlet end 12-2 through circuit signal control to realize the on-off of the print head 13, which is conducive to the performance of multi-material aerosol jet printing.

[0049] Reference Fig.11 , Fig.11 This is a physical picture of the result of on-demand atomization of multiple materials in this embodiment. On-demand atomization of multiple materials is achieved through multiple piezoelectric ceramic atomization sheets 2 in the atomization chamber and power supply of a DC power supply. It can be seen that the atomization effect of the materials is good.

[0050] Reference Fig.12 , Fig.12 This is a physical picture of the result of long-distance transportation in this embodiment. The separation of droplets and aerosol flow is achieved through the Y-type tee 10 and the liquid storage bottle 10-1 at the bottom. It can be seen that no droplets appear on the inner wall of the pipe after the Y-type three-way filtration, avoiding contamination of the printing nozzle 13.

[0051] Although the present invention has been described with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the concept of the present invention, and the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An expandable multi-channel aerosol atomization device, comprising an atomization chamber (1), characterized in that: A plurality of piezoelectric ceramic atomizing sheets (2) are arranged at the bottom of the atomizing chamber (1), and the piezoelectric ceramic atomizing sheets (2) are connected to a direct current power supply via a piezoelectric ceramic atomizing sheet circuit (2-1). A water medium is contained in the atomizing chamber (1), and the atomizing chamber (1) is connected to a cooling circulation device via a cooling water pipeline (4); the atomizing chamber (1) comprises an end cover (1-1) for fixing a plurality of tubular containers (3) containing different types of materials to be atomized; the tubular containers (3) are connected to an outlet of a carrier gas control valve (6) via a carrier gas pipeline (5), and an inlet of the carrier gas control valve (6) is connected to a carrier gas source via a carrier gas inlet pipeline (7); the tubular container (3) is connected to an inlet of an atomizing gas control valve (9) via an atomizing gas pipeline (8), and an outlet of the atomizing gas control valve (9) is connected to a conveying-printing device.

2. The device according to claim 1, characterized in that: The tubular container (3) comprises a tubular container body (3-2) and a tubular container bottom cover (3-1) and a tubular container top cover (3-3) connected thereto; a PI film (3-1-1) is installed in the tubular container bottom cover (3-1), and the PI film (3-1-1) realizes high-throughput atomization; the tubular container top cover (3-3) is provided with a carrier gas inlet (3-3-1), an atomizing gas outlet (3-3-2) and an atomizing gas guide plate (3-3-3); the carrier gas inlet (3-3-1) is connected to a carrier gas pipeline (5), the atomizing gas outlet (3-3-2) is connected to an atomizing gas pipeline (8), and the atomizing gas guide plate (3-3-3) has a vertical section, and is used to guide the atomizing gas to the atomizing gas outlet (3-3-2) and prevent the atomizing gas from forming a liquid film to block the aerosol passage.

3. The device according to claim 2, characterized in that: The end cover (1-1) is connected to a plurality of tubular containers (3) via a through hole (1-1-1); a fixing port (1-1-2) is provided on the end cover (1-1); the fixing port (1-1-2) is used to fix the tubular container (3) via a set screw and to adjust the distance between the bottom cover (3-1) of the tubular container and the piezoelectric ceramic atomizing sheet (2), thereby achieving a better atomization effect.

4. The device according to claim 3, characterized in that: The atomization chamber (1) is expandable, and the number of piezoelectric ceramic atomization sheets (2) at the bottom of the atomization chamber (1) and the number of through holes (1-1-1) of the end cover (1-1) of the atomization chamber (1) can be increased as needed, thereby increasing the types of atomized materials.

5. The device according to claim 1, characterized in that: The inlet of the carrier gas control valve (6) is a carrier gas inlet end (6-1), and the carrier gas inlet end (6-1) is connected to a carrier gas inlet pipeline (7); the outlet of the carrier gas control valve (6) is a plurality of carrier gas outlet ends, and the plurality of carrier gas outlet ends are respectively connected to a tubular container (3) containing different atomizing materials through a carrier gas pipeline (5); the carrier gas control valve (6) is switched between the plurality of carrier gas outlet ends through circuit signal control, thereby realizing the switching of carrier gas input of different atomizing materials.

6. The device according to claim 1, characterized in that: The inlet of the atomizing gas control valve (9) is provided with a plurality of atomizing gas inlet ends, and the plurality of atomizing gas inlet ends are respectively connected to a tubular container (3) containing different atomizing materials through an atomizing gas pipeline (8); the outlet of the atomizing gas control valve (9) is a delivery gas outlet end (9-3), and the delivery gas outlet end (9-3) is connected to a delivery pipeline (11); the atomizing gas control valve (9) is switched between the plurality of atomizing gas inlet ends through circuit signal control, thereby realizing the switching of atomizing gas outputs of different materials and preventing mutual contamination between different atomizing materials.

7. The device according to claim 1, characterized in that: The expandable multi-channel aerosol atomization device realizes on-demand atomization of multiple materials in the atomization chamber (1) by controlling the carrier gas control valve (6) and the atomization gas control valve (9), thereby shortening the period of connecting multiple materials during multi-material aerosol jet printing and avoiding mutual contamination between the multiple materials.

8. The device according to claim 1, characterized in that: The conveying-printing device comprises a Y-shaped three-way valve (10), the inlet of the Y-shaped three-way valve (10) is connected to the outlet of the atomizing gas control valve (9) through a conveying pipeline (11), the outlet of the Y-shaped three-way valve (10) is connected to the inlet of the printing nozzle on-off valve (12) through the conveying pipeline (11), the outlet of the printing nozzle on-off valve (12) is connected to the printing nozzle (13), and the printing nozzle (13) is connected to the sheath gas source through a sheath gas pipeline (14).

9. The device according to claim 8, characterized in that: The bottom of the Y-shaped tee (10) is connected to a liquid storage bottle (10-1), and droplets formed by adhering to the wall of the conveying pipe (11) and gathering during aerosol conveying enter the liquid storage bottle (10-1) at the bottom of the Y-shaped tee (10) due to gravity, and the aerosol flow circulates in the upper part of the Y-shaped tee (10), thereby achieving separation of the droplets and the aerosol flow.

10. The device according to claim 8, characterized in that: The inlet of the print head on-off valve (12) is a conveying gas inlet end (12-1), and the conveying gas inlet end (12-1) is connected to a conveying pipeline (11); the outlet of the print head on-off valve (12) is a printing gas outlet end (12-2), and the printing gas outlet end (12-2) is connected to a print head (13); the print head on-off valve (12) is provided with an air outlet end (12-3), and the air outlet end (12-3) is equipped with filter cotton for filtering aerosol particles discharged into the air to reduce pollution to the environment; the print head on-off valve (12) is switched between the conveying gas inlet end (12-1) and the printing gas outlet end (12-2) by circuit signal control, thereby realizing the on-off of the print head (13).

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