Electrostatic field adsorption device with double-section waveform air duct and pulse ionization structure and method for dynamically limiting ozone to exceed standard

Abstract

The electrostatic field adsorption device comprises a machine body, and is characterized in that a front group of discharge polar plates and a rear group of negative plates which are arranged in parallel are arranged in the machine body, and the negative plates and the discharge polar plates are metal sheets with S-shaped cross sections; a high-sensitivity humidity sensor is arranged in the machine body, and the output end of the high-sensitivity humidity sensor controls the high-voltage electrostatic generator to output voltage through a controller. The device has the advantages that the second wave intensity ionization structure is arranged aiming at the state that the charge intensity is gradually weakened after ions enter the parallel polar plates, so that the low-particle-size ions remaining in the first half of adsorption are intercepted by the dust collection plate after the polarity is enhanced. The high-sensitivity humidity sensor is used for collecting the air humidity in the machine body, the output voltage of the high-voltage electrostatic generator is dynamically adjusted, and it is guaranteed that ozone does not exceed the standard in the whole process and all weather.

Description

Technical Field

[0001] The invention relates to an electrostatic field adsorption device with a double-section corrugated air duct and a pulse ionization structure, and a method for dynamically limiting ozone exceeding a standard. Background Art

[0002] Air purification is divided into two levels: shallow purification and deep purification. Shallow purification primarily filters out trapped particulate matter. Traditional filtration methods are the primary technology for shallow purification. However, filtration technology has inherent drawbacks such as complex processes, low efficiency, high energy consumption, and severe secondary pollution. It is particularly inadequate for deep purification and has been largely phased out in the general civilian market.

[0003] Deep purification is based on shallow purification, and further increases the killing index of conventional bacteria and broad-spectrum viruses in the air. Especially during epidemics, it is an indispensable measure to protect public health. In fact, disinfection and sterilization have become the primary demand of the whole society for air purification.

[0004] Among traditional disinfection and sterilization methods, besides conventional ultraviolet light technology used in unmanned environments, high-voltage electrostatic adsorption technology is the most effective method for use in manned environments. This technology not only efficiently adsorbs inhalable particulate matter but also effectively sterilizes and disinfects, making it an ideal choice for indoor air purification. However, traditional high-voltage electrostatic technology suffers from the difficult problem of ozone exceeding the standard. Since its introduction, the industry has yet to find an effective solution.

[0005] The adsorption principle of high-voltage electrostatic field is that under the action of high voltage, all suspended particulate matter and various gaseous molecular clusters or free molecules in the polluted air flowing through the electric field become polar ions with a certain charge under strong ionization conditions, and then the charged ions are adsorbed onto the plate on the low potential side.

[0006] The reason why high-voltage electrostatic fields produce ozone is that there are generally two types of oxygen-containing substances in the air in human living environments, one is oxygen and the other is water vapor.

[0007] Under high voltage, when the molecular bonds between oxygen and water molecules reach a certain critical value under electrolysis, they are cut and broken, and decomposed into free atoms, which contain a certain number of oxygen atoms. Three oxygen atoms can combine to form an ozone molecule.

[0008] The specific process is as follows: Electrolysis process of oxygen molecules: ; Electrical energy process of water molecules: ; Ozone generation process: ; The ozone effect generated during electrostatic field operation is affected by many factors, and it is extremely difficult to achieve standard control of ozone levels while ensuring high adsorption. Even if static standards are achieved when a specific time period and specific parameters are met, ozone levels may exceed the standard at any time when the equipment is moved to a different location for testing or repeated testing at the same location for multiple time periods while the equipment operating parameters remain unchanged.

[0009] In the past, it was easy to attribute this problem to unstable control circuits, but despite repeated modifications and long-term testing, no fundamental solution could be found. This phenomenon has long troubled electrostatic technology researchers across the industry, both domestically and internationally, and has prevented electrostatic technology from achieving industrial application in indoor air purification for nearly three decades.

[0010] What's the root cause of the problem? It turns out that the external factors that cause excessive ozone levels in electrostatic fields are actually dynamic, yet traditional understandings of the problem remain static. Applying static theories to dynamic real-world environments naturally fails to provide new solutions to address real-world problems.

[0011] Returning to the root causes of ozone generation in electrostatic fields, let's analyze the two oxygen-containing substances in the air under normal conditions. The first, oxygen content, is essentially a determinable constant for the same region and can be set as a constant in the electric field control circuit. The second, air humidity, contains water vapor, which clearly changes at any time and in any place, including changes in temperature. Traditional electrostatic fields generally use fixed, static data to set ozone control parameters. This is the fundamental reason why these purification products cannot overcome unstable and excessive ozone levels, and it is also the crux of the problem that the entire industry has yet to find an effective solution. Summary of the Invention

[0012] The present invention addresses the common problems in the air purification industry and proposes a comprehensive and thorough solution, laying a practical and feasible technical foundation for the industrial application of electrostatic technology in the field of air purification, creating conditions for meeting the urgent social needs in this field.

[0013] The technical ideas and main process routes of the present invention are as follows: High-voltage electrostatic adsorption technology is recognized as an effective method for both solving the problem of inhalable particulate matter and disinfecting, but there is often no way to control ozone exceeding the standard.

[0014] The present invention grasps the core contradiction and comprehensively sets up corresponding effective technical measures during the entire process of electrostatic field operation, from ionization intensity to adsorption effect to full-process ozone dynamic monitoring and control, thereby ensuring the formation of an internally unified, efficient, standard-compliant, reliable and complete technical guarantee system. The present invention designs an electrostatic field adsorption device with a dual-stage corrugated air duct and a pulsed ionization structure, including a body, in which there are several parallel negative plates, characterized in that: two discharge plates are placed between the two negative plates, the two discharge plates are opposite to each other and are located on the same horizontal line, each discharge plate is composed of a needle tip and a flat plate, the flat plates of the two discharge plates are opposite to each other, the negative plates and the discharge plates are both metal sheets with a serpentine cross-section, the needle tip of the discharge plate at the air inlet end exceeds the end face of the negative plate, and the needle tip of the discharge plate at the air outlet end is retracted into the end face of the negative plate. The cross-section of the serpentine metal sheet is composed of several arc segments, several straight lines, or a mixture of several straight lines and arcs. A highly sensitive humidity sensor is installed within the body, the output of which is connected to a controller, which is connected to a high-voltage electrostatic generator, whose output is connected to a discharge electrode and a negative electrode, respectively. A method for dynamically limiting ozone excess in an electrostatic field adsorption device having a dual-stage corrugated air duct and a pulsed ionization structure is characterized in that the control method comprises the following steps: (1) Customize the continuous actual control curve of the corresponding working voltage of the high-voltage electrostatic generator: Continuously detect in the humidity range of 20%~90%. After starting up, the high-sensitivity humidity sensor collects the real-time air humidity data in the machine body. The output voltage of the high-voltage electrostatic generator is adjusted to the real-time ozone generation within the national standard limit. A humidity-high-voltage electrostatic generator output voltage data point is obtained. Repeat the above steps at a humidity interval of 2%~5% to obtain the continuous actual control curve of the corresponding working voltage of the high-voltage electrostatic generator; (2) According to the continuous actual control curve of the corresponding working voltage of the high-voltage electrostatic generator, a dynamic control circuit of the output voltage of the high-voltage electrostatic generator is set.

[0015] The advantage of this invention lies in its ability to address the gradual weakening of ion charge upon entering the parallel plates. A second wave of strong ionization is implemented to replenish this weakened charge, allowing the remaining low-particle ions from the first half of the adsorption process to be captured by the dust collecting plates after their polarity is enhanced. This process is crucial for achieving professional disinfection and sterilization results. A highly sensitive humidity sensor is used to collect the air humidity within the chamber, dynamically adjusting the output electric field power of the high-voltage electrostatic generator to ensure that ozone levels do not exceed standards throughout the entire process and at all times. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 This is a control principle diagram of the present invention.

[0018] Figure 3 It is a schematic diagram of the partial structure of the air inlet end of the electrode plate of the present invention.

[0019] Figure 4 It is a schematic diagram of the partial structure of the air outlet end of the electrode plate of the present invention. DETAILED DESCRIPTION

[0020] The following describes the specific embodiments of the present invention in detail in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand how to practice the present invention. Although the present invention has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative, rather than limiting, the scope of the present invention.

[0021] See also Figures 1 to 4 An electrostatic field adsorption device with a dual-stage corrugated air duct and a pulsed ionization structure includes a body 8, within which are several parallel negative plates 1. The device is characterized in that two discharge plates 2 are placed between the two negative plates, the two discharge plates facing each other and located on the same horizontal line. Each discharge plate is composed of a needle tip 3 and a flat plate 4, the flat plates of the two discharge plates facing each other. The negative and discharge plates are both metal sheets with serpentine cross-sections. The needle tip on the discharge plate at the air inlet end extends beyond the end face of the negative plate, while the needle tip on the discharge plate at the air outlet end is retracted within the end face of the negative plate. The cross-section of the serpentine metal sheet is composed of several arc segments, several straight lines, or a mixture of several straight lines and arc segments. A highly sensitive humidity sensor 5 is provided within the body, the output end of the highly sensitive humidity sensor being connected to a controller 6, which in turn is connected to a high-voltage electrostatic generator 7, the output end of which is connected to the discharge plate and the negative plate, respectively. A method for dynamically limiting ozone excess using an electrostatic field adsorption device having a dual-stage corrugated air duct and a pulsed ionization structure, characterized in that the control method comprises the following steps: (1) Customize the continuous actual control curve of the corresponding working voltage of the high-voltage electrostatic generator: Continuously detect in the humidity range of 20%~90%. After starting up, the high-sensitivity humidity sensor collects the real-time air humidity data in the machine body. The output voltage of the high-voltage electrostatic generator is adjusted to the real-time ozone generation within the national standard limit. A humidity-high-voltage electrostatic generator output voltage data point is obtained. Repeat the above steps at a humidity interval of 2%~5% to obtain the continuous actual control curve of the corresponding working voltage of the high-voltage electrostatic generator; (2) According to the continuous actual control curve of the corresponding working voltage of the high-voltage electrostatic generator, a dynamic control circuit of the output voltage of the high-voltage electrostatic generator is set.

[0022] In actual operation of the device, the high-sensitivity humidity sensor collects real-time air humidity data in the body, and determines the corresponding working voltage according to the continuous real-time control curve of the corresponding working voltage of the high-voltage electrostatic generator, so that the ozone generation amount at any time point is lower than the national standard.

[0023] The pre-ionization mode of needle and flat plate combination and asymmetric positive and negative electrodes is adopted to ensure high-density ionization effect. The serpentine efficiency section structure is arranged in the ion wind channel, and under the same ionization intensity, the adsorption probability of the charged pollution ions by the dust collection plate is effectively enhanced. Meanwhile, aiming at the state that the charge intensity gradually weakens after the ions enter the parallel plate, the strong adsorption effect of the ionization peak area on the particle size (mainly refers to small diameter bacteria and virus pollution ions) is utilized, and after the ions pass through the peak area for the first time, the ions with weakened electric quantity are subjected to the secondary strong ionization process, so that the electric quantity of the ions is re-increased. Therefore, the escape probability of the particle size ions is reduced in the subsequent adsorption process. Finally, conditions are created for filling the defects of ordinary electric field which is difficult to reach the medical professional sterilization standard. This process has decisive significance for improving the sterilization effect of reaching the standard.

[0024] Through experimental verification, it is proved that the application is completely feasible, which is equivalent to opening the last big door of the blocked high-voltage electrostatic technology in the field of indoor air purification.

Claims

1. An electrostatic field adsorption device with a double-stage corrugated air duct and a pulse ionization structure, comprising a body with a plurality of parallel negative plates, characterized in that: Two discharge plates are placed between the two negative plates. The two discharge plates are opposite to each other and located on the same horizontal line. Each discharge plate is composed of a needle tip and a flat plate. The flat plates of the two discharge plates are opposite to each other. The negative plates and the discharge plates are both metal sheets with a serpentine cross-section. The needle tip at the air inlet end of the discharge plate exceeds the end face of the negative plate, and the needle tip at the air outlet end of the discharge plate is retracted into the end face of the negative plate.

2. The electrostatic field adsorption device with a double-stage corrugated air duct and a pulse ionization structure according to claim 1, characterized in that: The cross section of the serpentine metal sheet is composed of a plurality of arc segments, a plurality of straight lines, or a mixture of a plurality of straight lines and arc segments.

3. The electrostatic field adsorption device with a double-stage corrugated air duct and a pulse ionization structure according to claim 1, characterized in that: A high-sensitivity humidity sensor is provided in the machine body, the output end of the high-sensitivity humidity sensor is connected to the controller, the controller is connected to the high-voltage electrostatic generator, and the output end of the high-voltage electrostatic generator is respectively connected to the discharge electrode and the negative electrode.

4. A method for dynamically limiting ozone excess using an electrostatic field adsorption device with a double-stage corrugated air duct and a pulsed ionization structure, characterized in that: The method comprises the following steps: (1) Customize the continuous actual control curve of the corresponding working voltage of the high-voltage electrostatic generator: Continuously detect in the humidity range of 20%~90%. After starting up, the high-sensitivity humidity sensor collects the real-time air humidity data in the machine body. The output voltage of the high-voltage electrostatic generator is adjusted to the real-time ozone generation within the national standard limit. A humidity-high-voltage electrostatic generator output voltage data point is obtained. Repeat the above steps at a humidity interval of 2%~5% to obtain the continuous actual control curve of the corresponding working voltage of the high-voltage electrostatic generator; (2) According to the continuous actual control curve of the corresponding working voltage of the high-voltage electrostatic generator, a dynamic control circuit of the output voltage of the high-voltage electrostatic generator is set.

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