Intelligent flow control cold plasma generator

Abstract

The utility model discloses an intelligent flow control cold plasma generator which comprises an outer cylinder, two electrodes are installed on the outer cylinder, a top cover is fixedly installed on the top of the outer cylinder, an airflow adjusting mechanism is installed on the top cover, a control panel is installed on the outer cylinder, an air inlet mechanism is arranged in the outer cylinder, and an air outlet mechanism is arranged in the outer cylinder. The airflow adjusting mechanism comprises two exhaust cylinders, a fan is arranged between the two exhaust cylinders, and the air outlet end of the fan is connected with two air pipes. According to the intelligent flow-control cold plasma generator, after gas is introduced into the outer cylinder, a high-voltage electric field between the electrodes ionizes the gas to generate ozone, negative oxygen ions and hydroxyl ions, then the fan pumps cold plasma airflow into the exhaust cylinder, the flow sensor monitors the gas flow, and the driving motor works to adjust the flow; and the flow is kept at a preset value, so that the airflow flow is conveniently adjusted, and the use convenience is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of plasma generator technology, specifically to an intelligent flow-controlled cold plasma generator. Background Technology

[0002] Cold plasma generators utilize dielectric barrier discharge to ionize gases (such as argon, nitrogen, or mixed gases) under normal or low pressure. The gas molecules are then excited by a high-frequency electric field (13.56 MHz or higher) to form a cold plasma beam containing electrons, ions, and active free radicals. In existing technologies, the gas flow carrying cold plasma flows out directly during use, making it inconvenient to effectively control and regulate the gas flow.

[0003] For example, patent publication number CN216440598U describes a multi-electrode dielectric barrier discharge low-temperature plasma reactor. It includes an outer insulating dielectric cylinder with a fluid inlet and a fluid outlet, a closed inner insulating dielectric cylinder housed within the outer cylinder, and a plasma light source installed inside the inner cylinder. Multiple parallel-connected external electrodes are spaced at intervals on the outer wall of the outer insulating dielectric cylinder, while a central electrode is located inside the inner cylinder. This reactor utilizes multiple parallel external electrodes, increasing the number of electrode edges and enhancing the edge effect. This is beneficial for increasing the proportion of corona discharge in the plasma discharge mode, reducing the current generated during discharge, improving the surface treatment effect and quality of samples, and enabling the reactor to operate safely and stably for extended periods. This facilitates the widespread application of plasma reactors in various industries. However, this cold plasma generator suffers from the problem that the gas flow carrying cold plasma flows out directly during use, making effective control and regulation of the gas flow inconvenient. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an intelligent flow-controlled cold plasma generator, which solves the problem that when a cold plasma generator is in use, the gas flow containing cold plasma flows out directly, making it inconvenient to effectively control and regulate the gas flow.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an intelligent flow-controlled cold plasma generator, including an outer cylinder, two electrodes installed on the outer cylinder, a top cover fixedly installed on the top of the outer cylinder, an airflow regulating mechanism installed on the top cover, a control panel installed on the outer cylinder, and an air intake mechanism provided inside the outer cylinder;

[0006] The airflow regulating mechanism includes two exhaust pipes, with a fan positioned between them. Two air pipes are connected to the outlet of the fan. Each exhaust pipe has an exhaust port at its top. A support pipe is fixedly connected between the two exhaust pipes. A rotating shaft is rotatably connected inside the support pipe, and a drive motor is driven onto the rotating shaft. Both ends of the rotating shaft are fixedly connected to a drive gear. Driven racks are located at the top and bottom of the drive gears. A first movable plate and a connecting rod are fixedly connected to the ends of the two driven racks, respectively. A second movable plate is fixedly connected to the end of the connecting rod. Guide rods are provided on both the first and second movable plates. Flow sensors are installed on both exhaust pipes.

[0007] Preferably, both exhaust pipes are fixedly installed on the top cover, and the exhaust end of the fan is connected to the bottom end of the exhaust pipe through two air pipes, so that the fan can discharge the plasma gas flow from the outer cylinder.

[0008] Preferably, the exhaust pipe is provided with a perforated baffle, and the first movable plate and the second movable plate are disposed on the top of the baffle, so that the gas can be discharged through the holes in the baffle, and the gas flow rate can be adjusted by using the first movable plate and the second movable plate.

[0009] Preferably, both ends of the rotating shaft are rotatably connected to the inner wall of the support tube via bearings, and the drive motor is fixedly mounted on the support tube, so that the drive motor can remain stable and drive the rotating shaft to rotate.

[0010] Preferably, the guide rod is fixedly installed on the inner wall of the exhaust pipe, and the guide rod is slidably connected to the first movable plate and the second movable plate, so that the guide rod can guide the movement of the first movable plate and the second movable plate.

[0011] Preferably, the two driven racks mesh with the driving gear, and the driven racks are slidably connected to the inner wall of the exhaust pipe through guide rails, so that the driven racks can maintain stable meshing with the driving gear, thereby enabling the driving gear to drive the driven racks to move.

[0012] Preferably, the air intake mechanism includes an air intake cylinder, an air intake pipe is provided on one side of the bottom of the air intake cylinder, the end of the air intake pipe passes through the outer cylinder and extends to the outside, an installation flange is fixedly connected to the bottom of the air intake cylinder, and multiple diversion holes are opened on the air intake cylinder to disperse the incoming gas, so that the gas can be evenly distributed in the high voltage electric field inside the outer cylinder, effectively improving the ionization effect.

[0013] This invention provides an intelligent controlled-flow cold plasma generator. Compared with the prior art, it has the following advantages:

[0014] 1. This intelligent flow-controlled cold plasma generator ionizes gas into ozone, negative oxygen ions, and hydroxyl ions through a high-voltage electric field between electrodes after gas is introduced into the outer cylinder. Then, a fan draws the cold plasma gas flow into the exhaust stack. A flow sensor monitors the gas flow rate and drives a motor to adjust the flow rate, keeping it at a preset value. This facilitates the adjustment of the gas flow rate and effectively improves ease of use.

[0015] 2. This intelligent flow-controlled cold plasma generator has an air inlet cylinder installed in the center of the outer cylinder via a mounting flange. Gas is introduced through the air inlet pipe and discharged through multiple diversion holes after entering the air inlet cylinder. This disperses the incoming gas, allowing it to be evenly distributed in the high-voltage electric field inside the outer cylinder, effectively improving the ionization effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the airflow regulating mechanism of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the support tube of this utility model;

[0019] Figure 4 This is a schematic diagram of the air intake mechanism of this utility model.

[0020] In the diagram: 1. Outer cylinder; 2. Airflow regulating mechanism; 201. Exhaust pipe; 202. Fan; 203. Air pipe; 204. Exhaust port; 205. Support pipe; 206. Rotating shaft; 207. Drive motor; 208. Drive gear; 209. Driven rack; 210. First movable plate; 211. Connecting rod; 212. Second movable plate; 213. Guide rod; 214. Flow sensor; 3. Electrode; 4. Air intake mechanism; 401. Air intake cylinder; 402. Air intake pipe; 403. Mounting flange; 404. Diverter hole; 5. Top cover; 6. Control panel. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-3This utility model provides a technical solution: an intelligent flow-controlled cold plasma generator, including an outer cylinder 1, a cooler installed on the outer cylinder 1, which can control the ambient temperature inside the outer cylinder 1, and the ambient temperature is controlled between -20 and 60℃. Two electrodes 3 are installed on the outer cylinder 1, and an electric field is generated between the two electrodes 3, which can ionize the working gas (such as humid air) to generate ozone + negative oxygen ions + hydroxyl ions, which can play a sterilization and disinfection role. A top cover 5 is fixedly installed on the top of the outer cylinder 1, and an airflow regulating mechanism 2 is installed on the top cover 5. A control panel 6 is installed on the outer cylinder 1. The control panel 6 is a touch screen with a built-in PIC16F17576 microcontroller, which can play a good control role for the whole. An air intake mechanism 4 is provided inside the outer cylinder 1, which can automatically adjust the gas flow through the airflow regulating mechanism 2, effectively improving the convenience of use.

[0023] The airflow regulating mechanism 2 includes two exhaust pipes 201, with a fan 202 positioned between them. The outlet of the fan 202 is connected to two air pipes 203. Both exhaust pipes 201 are fixedly mounted on the top cover 5. The outlet of the fan 202 is connected to the bottom of the exhaust pipe 201 via the two air pipes 203, allowing the fan 202 to discharge plasma gas from the outer cylinder 1. Each exhaust pipe 201 has an exhaust port 204 at its top. A support pipe 205 is fixedly connected between the two exhaust pipes 201. The support pipe 205 internally rotates... A rotating shaft 206 is connected to the rotating shaft 206, and a drive motor 207 is driven onto the rotating shaft 206. The rotating shaft 206 and the drive motor 207 are connected by a bevel gear transmission, enabling the drive motor 207 to drive the rotating shaft 206 to rotate. The drive motor 207 is a stepper motor, which can self-lock when it stops working to improve stability. Both ends of the rotating shaft 206 are rotatably connected to the inner wall of the support tube 205 through bearings. The drive motor 207 is fixedly mounted on the support tube 205, so that the drive motor 207 can remain stable and drive the rotating shaft 206 to rotate. The rotating shaft 206 is fixedly connected to both ends with a drive gear 208. The drive gear 208 has driven racks 209 at its top and bottom. The two driven racks 209 mesh with the drive gear 208. The driven racks 209 are slidably connected to the inner wall of the exhaust pipe 201 via guide rails, ensuring stable meshing between the driven racks 209 and the drive gear 208. This allows the drive gear 208 to drive the driven racks 209 to move. A first movable plate 210 and a connecting rod 211 are fixedly connected to the ends of the two driven racks 209, respectively. A second movable plate 212 is fixedly connected to the end of the connecting rod 211. The exhaust pipe 201 is provided with a perforated partition. The first movable plate 210 and the second movable plate 212 are located on the top of the partition, allowing gas to pass through the holes in the partition and be discharged. The gas flow rate can be adjusted using the first movable plate 210 and the second movable plate 212. Guide rods 213 are provided on both the first movable plate 210 and the second movable plate 212. Flow sensors 214 are installed on both exhaust pipes 201. The flow sensor 214 is a Sensirion SFM5400, which can effectively monitor the gas flow rate. The guide rods 213 are fixedly installed on the inner wall of the exhaust pipe 201 and are slidably connected to the first movable plate 210 and the second movable plate 212, so that the guide rods 213 can guide the movement of the first movable plate 210 and the second movable plate 212.

[0024] Please see Figure 1 and Figure 4The air intake mechanism 4 includes an air intake cylinder 401. An air intake pipe 402 is provided on one side of the bottom of the air intake cylinder 401. The end of the air intake pipe 402 passes through the outer cylinder 1 and extends to the outside. A mounting flange 403 is fixedly connected to the bottom of the air intake cylinder 401. Multiple diversion holes 404 are provided on the air intake cylinder 401. The air intake cylinder 401 can be installed in the center of the outer cylinder 1 through the mounting flange 403. Gas is introduced through the air intake pipe 402. After the gas enters the air intake cylinder 401, it is discharged through the multiple diversion holes 404, which can disperse the gas and make the gas evenly distributed in the high voltage electric field inside the outer cylinder 1, effectively improving the ionization effect.

[0025] During operation, after the gas is introduced into the outer cylinder 1, the high-voltage electric field between the electrodes 3 ionizes the gas to generate ozone + negative oxygen ions + hydroxyl ions. Then, the fan 202 extracts the cold plasma gas flow into the exhaust pipe 201. The flow sensor 214 monitors the gas flow rate. Then, the control panel 6 controls the drive motor 207 to work according to the preset flow threshold. The drive motor 207 drives the rotating shaft 206 to rotate. The rotating shaft 206 drives the drive gear 208 to rotate. The rotation of the drive gear 208 drives the two driven racks 209 to move towards or away from each other. The movement of the driven racks 209 changes the distance between the first movable plate 210 and the second movable plate 212, changing the ventilation area of ​​the holes on the partition plate, so that the flow rate is maintained at the preset value, which facilitates the adjustment of the airflow and effectively improves the ease of use.

[0026] The physical performance of this application was tested, and the results are shown in the table below:

[0027]

[0028] The disinfection performance test of this application was conducted, and the results are shown in the table below:

[0029]

[0030] All the above tests were conducted in an environment where the average ozone concentration was less than 1 ppm, which can play a very good role in sterilization and disinfection.

[0031] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A smart flow-controlled cold plasma generator, comprising an outer cylinder (1), characterized in that: Two electrodes (3) are installed on the outer cylinder (1), a top cover (5) is fixedly installed on the top of the outer cylinder (1), an airflow regulating mechanism (2) is installed on the top cover (5), a control panel (6) is installed on the outer cylinder (1), and an air intake mechanism (4) is provided inside the outer cylinder (1). The airflow regulating mechanism (2) includes two exhaust pipes (201), a fan (202) is provided between the two exhaust pipes (201), the outlet end of the fan (202) is connected to two air pipes (203), the top of each of the two exhaust pipes (201) is provided with an exhaust port (204), a support pipe (205) is fixedly connected between the two exhaust pipes (201), a rotating shaft (206) is rotatably connected inside the support pipe (205), a drive motor (207) is drivenly connected to the rotating shaft (206), and the rotating shaft (207) is drivenly connected to the drive motor (207). 206) Both ends are fixedly connected to a drive gear (208). The drive gear (208) is provided with a driven rack (209) at the top and bottom. The ends of the two driven racks (209) are respectively fixedly connected to a first movable plate (210) and a connecting rod (211). The end of the connecting rod (211) is fixedly connected to a second movable plate (212). The first movable plate (210) and the second movable plate (212) are both provided with guide rods (213). The two exhaust pipes (201) are both equipped with flow sensors (214).

2. The intelligent flow-controlled cold plasma generator according to claim 1, characterized in that: Both exhaust pipes (201) are fixedly installed on the top cover (5), and the exhaust end of the fan (202) is connected to the bottom end of the exhaust pipe (201) through two air pipes (203).

3. The intelligent flow-controlled cold plasma generator according to claim 1, characterized in that: The exhaust pipe (201) is provided with a perforated partition, and the first movable plate (210) and the second movable plate (212) are disposed on the top of the partition.

4. The intelligent flow-controlled cold plasma generator according to claim 1, characterized in that: Both ends of the rotating shaft (206) are rotatably connected to the inner wall of the support tube (205) through bearings, and the drive motor (207) is fixedly installed on the support tube (205).

5. The intelligent flow-controlled cold plasma generator according to claim 1, characterized in that: The guide rod (213) is fixedly installed on the inner wall of the exhaust pipe (201), and the guide rod (213) is slidably connected to the first movable plate (210) and the second movable plate (212).

6. The intelligent flow-controlled cold plasma generator according to claim 1, characterized in that: The two driven racks (209) mesh with the driving gear (208), and the driven racks (209) are slidably connected to the inner wall of the exhaust pipe (201) through guide rails.

7. The intelligent flow-controlled cold plasma generator according to claim 1, characterized in that: The air intake mechanism (4) includes an air intake cylinder (401), and an air intake pipe (402) is provided on one side of the bottom of the air intake cylinder (401). The end of the air intake pipe (402) passes through the outer cylinder (1) and extends to the outside.

8. The intelligent flow-controlled cold plasma generator according to claim 7, characterized in that: The bottom end of the air inlet cylinder (401) is fixedly connected to the mounting flange (403), and the air inlet cylinder (401) is provided with multiple diversion holes (404).

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