Plasma generator capable of controlling ozone amount

Abstract

The application discloses a plasma generator capable of controlling ozone amount, which comprises a box body, an air inlet primary filtering device and an exhaust module. The box body is divided into a purification cavity and an exhaust buffer cavity. The purification cavity and the exhaust buffer cavity are connected through pipelines. The air inlet primary filtering device is installed and communicated with the purification cavity. The exhaust module is installed and communicated with the exhaust buffer cavity. The exhaust module comprises an exhaust pump. The exhaust pump is started to form an air exhaust route from the purification cavity to the exhaust buffer cavity. The purification cavity is correspondingly provided with an ionization device. An ozone treatment device is installed on the top of the box body. The ozone treatment device is connected to the air pipeline from the purification cavity to the exhaust buffer cavity. The ozone treatment device is designed with a zigzag air flow path to enlarge the air flow movement stroke. The air flow is fully contacted with a catalytic plate to decompose ozone. The application can well treat the ozone generated by ionization and can significantly reduce the ozone emission of the plasma generator equipment.

Description

Technical Field

[0001] This invention relates to the field of air purification equipment technology, and more specifically, to a plasma generator capable of controlling the amount of ozone. Background Technology

[0002] Plasma generators are commonly used air purification devices. They utilize electrodes to generate a high-voltage electric field, causing air molecules to ionize and produce plasma. This ionization of air disinfects and sterilizes, achieving air purification. Ozone is a byproduct of air purification produced by plasma generators (formed by the ionization of oxygen in the air). The better the ionization effect of the plasma generator, the more ozone is produced. Low concentrations of ozone have an auxiliary bactericidal effect, but as the ozone concentration increases, higher concentrations of ozone emissions can not only cause discomfort to the human body but also have adverse effects on human health and may even affect the service life of the equipment. Therefore, controlling ozone emissions has become a key design focus for plasma generator equipment, hence this case. Summary of the Invention

[0003] The purpose of this invention is to address the needs of the prior art and provide a plasma generator capable of controlling ozone levels. This invention is designed to install an ozone treatment device to treat ozone generated by ionization. The ozone treatment device has a tortuous airflow path to increase the airflow distance, allowing the air to fully contact the catalytic plates to decompose the ozone. This invention can effectively treat ozone generated by ionization and significantly reduce the ozone emissions from the plasma generator.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A plasma generator capable of controlling ozone levels includes a housing, an air intake pre-filter, and an exhaust module. The housing is divided into a purification chamber and an exhaust buffer chamber, which are connected by a pipeline. The air intake pre-filter is installed and connected to the purification chamber, and the exhaust module is installed and connected to the exhaust buffer chamber. The exhaust module includes an exhaust pump, which, when activated, forms an air extraction route from the purification chamber to the exhaust buffer chamber. An ionization device is installed in the purification chamber, and an ozone treatment device is installed on the top of the housing and connected to the air pipeline from the purification chamber to the exhaust buffer chamber.

[0006] Furthermore, the ionization device includes an electrode rod installed inside the purification chamber, the electrode rod being installed above the air intake pre-filter, and the air outlet of the purification chamber being located at the top of the purification chamber.

[0007] Furthermore, the air intake pre-filtration device includes a main air intake port, a filter disc, and an air intake hood. The main air intake port is connected to the purification chamber. A step is formed inside the main air intake port. The filter disc is installed against the step. The air intake hood is threaded to the main air intake port. The air intake hood is connected to a pressure plate flange. The pressure plate flange is adapted to be inserted into the main air intake port and presses the filter disc tightly and fixes it. The surface of the air intake hood is provided with a plurality of grid holes.

[0008] Furthermore, the ozone treatment device includes a treatment box and catalytic plates. The treatment box is embedded from the top of the housing. The treatment box is connected to a treatment air inlet and a treatment air outlet at its left and right ends, respectively. Several catalytic plates are arranged in a left-right direction and installed inside the treatment box. Several catalytic plates are installed alternately up and down to form a wave-shaped airflow path inside the treatment box.

[0009] Furthermore, the catalyst plate includes a skeleton plate, which is fixedly connected to the inside of the processing box, and catalyst plates are fixedly installed on both the front and rear sides of the skeleton plate.

[0010] Furthermore, the catalytic plates are installed at an angle, and adjacent catalytic plates form a conical flow space.

[0011] Furthermore, the exhaust module also includes an ozone concentration detector installed in the exhaust buffer chamber, and the ozone concentration detector is linked to the ionization device.

[0012] The beneficial effects of this invention are:

[0013] This invention designs and installs an ozone treatment device to treat ozone generated by ionization. The ozone treatment device has a tortuous airflow path to increase the airflow distance, allowing the air to fully contact the catalytic plates to decompose the ozone. This invention improves the ozone treatment effect by rationally arranging the catalytic plates. This invention can effectively treat ozone generated by ionization, significantly reduce the ozone emissions of plasma generator equipment, and meet the safety requirements of plasma generator operation. Attached Figure Description

[0014] Figure 1 This is a three-dimensional outline view of a plasma generator capable of controlling ozone levels in this embodiment;

[0015] Figure 2 This is a cross-sectional view of the internal structure of a plasma generator capable of controlling ozone levels in this embodiment;

[0016] Figure 3 This is a cross-sectional view of the ozone treatment device in this embodiment;

[0017] Figure 4 for Figure 2Enlarged view of point A in the image.

[0018] Reference numerals: 1. Housing; 11. Purification chamber; 12. Exhaust buffer chamber; 2. Pre-filter; 21. Main intake port; 22. Step; 23. Filter plate; 24. Intake hood; 241. Pressure plate flange; 242. Grille hole; 3. Exhaust module; 31. Exhaust pump; 32. Ozone concentration detector; 4. Ionization device; 41. Electrode rod; 5. Ozone treatment device; 51. Treatment box; 52. Treatment air inlet; 53. Treatment air outlet; 54. Catalytic plate; 541. Frame plate; 542. Catalytic plate; 55. Airflow path; 56. Flow space. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1-4The plasma generator shown includes a housing 1, an air intake pre-filter 2, and an exhaust module 3. The housing 1 is divided into a purification chamber 11 and an exhaust buffer chamber 12, which are connected by a pipeline. The exhaust module 3 is installed and connected to the exhaust buffer chamber 12. The exhaust module 3 includes an exhaust pump 31, which is used to extract air, allowing air to flow within the housing 1. Activating the exhaust pump 31 creates an air extraction route from the purification chamber 11 to the exhaust buffer chamber 12. Air enters from the purification chamber 11 and is ultimately extracted from the exhaust buffer chamber 12. The air intake pre-filter 2 is installed and connected to the purification chamber 11, which serves as the first point of entry for air into the housing 1 of the plasma generator. The air intake pre-filter 2 filters the incoming air, removing large particulate impurities. An ionization device 4 is installed correspondingly in the purification chamber 11, and the ionization device 4 includes electrode rods 4 installed inside the purification chamber 11. 1. Electrode rod 41 generates a high-voltage electric field when energized. Electrode rod 41 is installed above the air intake pre-filter device 2. The air outlet of the purification chamber 11 is located at the top of the purification chamber 11. The air drawn into the purification chamber 11 moves from bottom to top. The air passes through electrode rod 41 and generates a high-voltage electric field to achieve the effect of air disinfection and sterilization. After ionization, the air contains ozone byproducts. In order to reduce the ozone content in the exhaust air of the plasma generator, an ozone treatment device 5 is designed and installed on the top of the housing 1. The ozone treatment device 5 is connected to the air pipeline from the purification chamber 11 to the exhaust buffer chamber 12. The ionized air output from the purification chamber 11 contains ozone. It first enters the ozone treatment device 5 to complete the ozone component treatment, and then is drawn into the exhaust buffer chamber 12 to wait for output. The ozone treatment device 5 can decompose and treat the ozone components to ensure that the ozone content in the exhaust of the plasma generator is kept at a low concentration (ideally, no ozone components are discharged and all ozone components are decomposed).

[0021] The plasma generator of this invention is generally used in indoor environments, where large particulate impurities are present, making it unsuitable for direct entry into the purification chamber 11 for ionization. Therefore, this invention incorporates a primary air filter 2 at the air inlet of the purification chamber 11 to meet the air filtration requirements. Figure 2 and Figure 4As shown, the air intake pre-filtration device 2 includes a main air intake port 21, a filter disc 23, and an air intake hood 24. The main air intake port 21 is fixedly installed on the outer wall of the housing 1 and is connected through the purification chamber 11. The main air intake port 21 is used for air input. The main air intake port 21 has a through hole with a step 22 formed inside. The filter disc 23 is installed against the step 22. The outer wall of the main air intake port 21 is threaded. The air intake hood 24 is threaded to the main air intake port 21 and is connected to a pressure plate flange 241. After the air intake hood 24 is threaded, its pressure plate flange 241 is adapted to be inserted into the main air intake port 21. The air inlet 21 is filled with air and the filter disc 23 is pressed and fixed. The surface of the air inlet hood 24 is provided with several grille holes 242. The grille design of the air inlet hood 24 is used to block large pieces of debris in the air and prevent them from directly entering the air intake pre-filter device 2 and clogging the filter disc 23. The filter disc 23 is used to filter the air and block large particles of impurities in the air from entering the purification chamber 11 (blocking large particles larger than 0.5 microns from entering). With the continuous use of this invention, the large particles of impurities blocked on the filter disc 23 will definitely increase. Normally, the air inlet hood 24 can be unscrewed and the filter disc 23 can be taken out for cleaning and reuse.

[0022] like Figure 2 and Figure 3 As shown, the ozone treatment device 5 includes a treatment box 51 and a catalyst plate 54. The ozone treatment device 5 adopts a modular design. The treatment box 51 is installed by embedding it from the top of the housing 1 to ensure the aesthetic appearance of the plasma generator. The treatment box 51 has a treatment inlet 52 and a treatment outlet 53 connected to its left and right ends, respectively. Figure 2 As shown, the purification chamber 11 is on the right and the exhaust buffer chamber 12 is on the left. Therefore, the processing air inlet 52 of the processing box 51 is on the right and connected to the pipeline of the purification chamber 11, and the processing air outlet 53 of the processing box 51 is on the left and connected to the pipeline of the exhaust buffer chamber 12. Air passes through the processing box 51 from right to left, as... Figure 3As shown, several catalyst plates 54 are arranged in a left-right direction and installed inside the processing box 51. There are two installation methods for the catalyst plates 54: one is a closed top with an airflow gap at the bottom (called upward installation); the other is a closed bottom with an airflow gap at the top (called downward installation). The catalyst plates 54 are arranged in an alternating up-and-down pattern, thus forming a wavy airflow path 55 within the processing box 51. This wavy airflow path 55 increases the airflow distance, increasing the contact time between the air and the catalyst plates 54, which is beneficial for the complete decomposition of ozone in the air. The catalyst plates 54 of this invention include a skeleton plate 54. 1. The skeleton plate 541 is made of metal and is easily welded to the inside of the treatment box 51. The skeleton plate 541 supports the installation of the catalyst plate 542. The catalyst plate 542 is laid flat and fixedly installed on the surface of the skeleton plate 541. Catalyst plates 542 are fixedly installed on both the front and rear sides of the skeleton plate 541. The catalyst plate 542 is made of MINSLITE-B catalyst, which is a catalyst composed of copper and manganese. When air comes into contact with the catalyst plate 542, the ozone component inside is catalyzed and decomposed into oxygen by the catalyst, achieving pollution-free emission. To further improve the ozone treatment effect, the present invention also designs the catalyst plate 54 as follows: Figure 3 As shown in the inclined installation, adjacent catalytic plates 54 form a conical flow space 56. The conical flow space 56 has a large-head cross section and a small-head cross section. Air enters from the large-head cross section and exits from the small-head cross section. According to Bernoulli's principle, changes in cross-sectional size can cause changes in air velocity. The air velocity is high at the small-head cross section and slow at the large-head cross section. The air flow path 55 of this invention is composed of several interconnected flow spaces 56. As the air travels along the air flow path 55, its velocity changes continuously. This also helps to improve the contact efficiency between ozone components in the air and the catalytic plates 54, significantly improving the decomposition efficiency of ozone components in the air, so that the final exhaust air achieves low-concentration or zero-concentration ozone emissions.

[0023] To prevent the continuous and accidental release of high-concentration ozone air, the exhaust module 3 of this invention also includes an ozone concentration detector 32 designed and installed within the exhaust buffer chamber 12. The exhaust buffer chamber 12 is the last stop before the air is discharged from the plasma generator. The ozone concentration detector 32 can monitor the ozone concentration in the exhaust buffer chamber 12 in real time. This invention designs an upper limit and a safety threshold for the ozone concentration of the exhaust air. The upper limit is the highest control value for the ozone concentration of the exhaust air. If the upper limit is exceeded, the entire plasma generator needs to be shut down. The safety threshold is set at 70%-80% of the upper limit. This is a device operation status adjustment value. Based on the monitoring data from ozone concentration detector 32, the ionization device 4 is controlled in conjunction with it. When the ozone concentration detected by ozone concentration detector 32 approaches the safety threshold, the ionization device 4 is controlled to reduce the electric field voltage to decrease ozone emissions. This may be due to reaching the upper limit of the ozone treatment device 5's processing capacity. If the ozone concentration continues to rise after the ionization device 4 reduces the electric field voltage, it may be due to prolonged use of the ozone treatment device 5, resulting in decreased catalyst activity. In such cases, the ozone treatment device 5 will need to be replaced during subsequent maintenance (the entire device will be removed and replaced). Figure 1 As shown, the present invention has a movable door installed on the front of the housing 1. After the movable door is opened, operations such as pipe connection and equipment maintenance can be performed. The control panel of the present invention is installed above the ionization device for easy wiring.

[0024] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A plasma generator capable of controlling the amount of ozone, characterized in that, The device includes a housing (1), an air intake pre-filter (2), and an exhaust module (3). The housing (1) is divided into a purification chamber (11) and an exhaust buffer chamber (12), which are connected by a pipeline. The air intake pre-filter (2) is installed and connected to the purification chamber (11), and the exhaust module (3) is installed and connected to the exhaust buffer chamber (12). The exhaust module (3) includes an exhaust pump (31), which forms an air extraction route from the purification chamber (11) to the exhaust buffer chamber (12) by activating the exhaust pump (31). An ionization device (4) is installed in the purification chamber (11), and an ozone treatment device (5) is installed on the top of the housing (1). The ozone treatment device (5) is connected to the air pipeline from the purification chamber (11) to the exhaust buffer chamber (12). The ozone treatment device (5) includes a treatment box (51) and catalytic plates (54). The treatment box (51) is installed by embedding from the top of the housing (1). The treatment box (51) is connected to a treatment air inlet (52) and a treatment air outlet (53) at its left and right ends, respectively. Several catalytic plates (54) are installed in the treatment box (51) in a left-right arrangement. Several catalytic plates (54) are installed alternately up and down to form a wave-shaped airflow path (55) in the treatment box (51). The catalytic plates (54) are installed at an angle, and adjacent catalytic plates (54) form a conical flow space (56). The exhaust module (3) also includes an ozone concentration detector (32) installed in the exhaust buffer chamber (12). The ozone concentration detector (32) is linked to the ionization device (4).

2. The plasma generator capable of controlling ozone levels according to claim 1, characterized in that, The ionization device (4) includes an electrode rod (41) installed inside the purification chamber (11). The electrode rod (41) is installed above the air intake pre-filter (2). The air outlet of the purification chamber (11) is located at the top of the purification chamber (11).

3. A plasma generator capable of controlling ozone levels according to claim 1, characterized in that, The air intake pre-filtration device (2) includes a main air intake port (21), a filter disc (23) and an air intake hood (24). The main air intake port (21) is connected to the purification chamber (11). A step (22) is formed inside the main air intake port (21). The filter disc (23) is installed against the step (22). The air intake hood (24) is threaded to the main air intake port (21). The air intake hood (24) is connected to a pressure plate flange (241). The pressure plate flange (241) is adapted to be inserted into the main air intake port (21) and presses the filter disc (23) tightly. The surface of the air intake hood (24) is provided with several grid holes (242).

4. A plasma generator capable of controlling ozone levels according to claim 1, characterized in that, The catalyst plate (54) includes a skeleton plate (541), which is fixedly connected to the inside of the processing box (51). Catalyst plates (542) are fixedly installed on both the front and rear sides of the skeleton plate (541).

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