Negative-oxygen antibacterial air duct for air purification and preparation method of negative-oxygen antibacterial air duct

Abstract

According to the negative oxygen antibacterial air pipe for air purification and the preparation method thereof, the inner surface layer of the air pipe is coated with a special modified coating prepared from rare earth, natural mineral powder, metal ions, fluorocarbon resin, a curing agent and a modified rare earth material to form a special modified coating; crystal components in the special modified coating have a piezoelectric effect and a pyroelectric effect under the air pressure condition, potential difference is generated on the surface of the special modified coating material through pressure and temperature changes in an air pipe, so that surrounding air is ionized, ionized electrons act on adjacent water and oxygen molecules and convert the water and oxygen molecules into negative ions, and the negative ions are converted into negative ions. Negative oxygen ions are fed into the indoor environment along with the air inlet system, and human comfort is improved; meanwhile, the generation of potential difference can effectively destroy the growth and reproduction environment of bacteria and viruses, so that the antibacterial and bacteriostatic effects are achieved, and the harm of bacteria, viruses and the like carried in the air to a human body is reduced.

Description

Technical Field

[0001] This invention belongs to the field of ventilation ducts, specifically relating to a negative oxygen antibacterial air duct for air purification and its preparation method. Background Technology

[0002] Indoor air supply systems and their ductwork are essential components of modern buildings. Their primary function is to provide and regulate indoor air quality and temperature to ensure a comfortable and healthy living or working environment. They mainly consist of supply fans, ductwork, filters, regulating devices, air outlets, and return air inlets. Air first passes through filters to remove dust and other pollutants. Depending on the needs, the air may also be conditioned by heaters or coolers, or humidified by humidifiers or dehumidifiers. The treated air is then propelled by the supply fan and delivered to various rooms or areas of the building through the ductwork system. Air is evenly distributed throughout the room through the outlets, while indoor air is collected through return air inlets for further treatment and recirculation. If the air purification efficiency of the indoor air supply system is low, pollutants and harmful microorganisms in the air cannot be effectively removed, leading to the proliferation of large amounts of microorganisms and bacteria inside the ductwork. These pollutants and bacteria will enter the room with the air, potentially increasing the risk of respiratory diseases and other health problems, posing a risk to the health of people living or working in the environment. Summary of the Invention

[0003] To address the aforementioned issues, this application presents a novel ventilation duct designed to increase the content of negative oxygen ions in the incoming air, thereby enhancing its air purification and antibacterial capabilities.

[0004] An air purification negative oxygen antibacterial duct includes an outer steel plate, an inner steel plate, a thermal insulation material layer, and a special modified coating;

[0005] The outer steel plate is set outside the insulation material layer;

[0006] The inner steel plate is disposed inside the insulation material layer;

[0007] The inner ring surface of the inner steel plate is provided with a special modified coating.

[0008] Preferably, the special modified coating comprises fluorocarbon coating and modified rare earth material, wherein the ratio of fluorocarbon coating to modified rare earth material is 20 to 150:1.

[0009] Preferably, the fluorocarbon coating comprises a fluorocarbon resin and a curing agent, wherein the ratio of the fluorocarbon resin to the curing agent is 2 to 6:1. The curing agent is an aliphatic isocyanate.

[0010] Preferably, the modified rare earth material includes rare earth, natural mineral powder, and metal ions; the ratio of rare earth, natural mineral powder, and metal ions is 1:4 to 16:1.

[0011] The metal ions can be copper ions, silver ions, nickel ions, etc.

[0012] The natural mineral powder is a cyclic silicate mineral containing elements such as aluminum, sodium, iron, magnesium, and lithium, with boron as its characteristic component.

[0013] Preferably, the particle size of the modified rare earth material is less than 35 μm.

[0014] Preferably, the outer steel plate has a thickness of 0.6–2.5 mm, the inner steel plate has a thickness of 0.6–2.5 mm, the special modified coating has a thickness of 20–60 mm, and the insulation material layer has a thickness of 2–10 mm.

[0015] Preferably, the negative oxygen antibacterial air duct is a square air duct with a ratio of 30:30:30 to 300cm.

[0016] A method for preparing a negative oxygen antibacterial air duct for air purification includes:

[0017] Step S1: Prepare the outer steel plate, inner steel plate, and insulation material layer according to production specifications;

[0018] Step S2: Prepare a special modified coating, apply it to the inner surface of the inner steel plate, and dry it.

[0019] Step S3: Prepare the negative oxygen antibacterial air duct by forming the outer steel plate, inner steel plate, and insulation material layer according to the design requirements.

[0020] Preferably, the preparation method of the special modified coating includes:

[0021] Step S21: Mix fluorocarbon resin, curing agent, and modified rare earth material in a ratio of 4:1:0.01 to 1 to form a preliminary coating.

[0022] Step S22: Dilute the initial coating at a ratio of 1:0.2 to 3 to form a special modified coating.

[0023] Preferably, the drying conditions for the special modified coating are drying at 40°C for 20–60 minutes.

[0024] The advantages and effects of this application are as follows:

[0025] This application designs an air purification negative oxygen antibacterial duct. A special modified coating is formed by applying a special modified paint, made from rare earth elements, natural mineral powder, metal ions, fluorocarbon resin, curing agent, and modified rare earth materials, to the inner surface of the duct. The crystalline components in this special modified coating exhibit piezoelectric and pyroelectric effects under wind pressure. Pressure and temperature changes within the duct cause a potential difference on the surface of the special modified coating material, ionizing the surrounding air. The ionized electrons act on nearby water and oxygen molecules, converting them into negative ions. These negative oxygen ions are then delivered into the indoor environment through the air intake system, improving human comfort. Simultaneously, the generated potential difference effectively disrupts the growth and reproduction environment of bacteria and viruses, achieving antibacterial and bacteriostatic effects and reducing the harm to the human body from bacteria and viruses carried in the air.

[0026] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the preferred embodiments of this application are described in detail below with reference to the accompanying drawings.

[0027] The above and other objects, advantages and features of this application will become more apparent to those skilled in the art from the following detailed description of specific embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0029] Figure 1 A product diagram of an air purification negative oxygen antibacterial duct designed for this application;

[0030] Figure 2 A flowchart illustrating the preparation process of a negative oxygen antibacterial air duct for air purification designed for this application.

[0031] Figure label:

[0032] 1. Outer steel plate; 2. Inner steel plate; 3. Thermal insulation material layer; 4. Special modified coating. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. In the following description, specific details such as specific configurations and components are provided merely to help fully understand the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. In addition, for clarity and brevity, descriptions of known functions and structures are omitted in the embodiments.

[0034] It should be understood that the phrase "an embodiment" or "this embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "an embodiment" or "this embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0035] Furthermore, reference numerals and / or letters may be repeated in different examples within this application. Such repetition is for the purpose of simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed.

[0036] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another type of relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0037] In this article, the term "at least one" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, "at least one of A and B" can mean: A exists alone, A and B exist simultaneously, or B exists alone.

[0038] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion.

[0039] Example 1

[0040] Please refer to Figure 1 and Figure 2 This embodiment mainly introduces the first design of an air purification negative oxygen antibacterial air duct designed in this application. It uses 1.2mm thick color steel plate as outer steel plate 1 and inner steel plate 2, and the insulation material layer is made of 5cm thick insulation rock material to make a 30*30*120cm square air duct.

[0041] A 30µm special modified coating 4 is applied to the surface of the inner steel plate 2. Fluorocarbon resin, curing agent and modified rare earth material are mixed in a ratio of 4:1:0.1, and after adding 1 part diluent, it is sprayed onto the surface of the inner steel plate and dried at 40℃ for 45 minutes to set.

[0042] The air duct was placed on a special test bench for testing. At a wind speed of 1 m / s, the concentration of negative oxygen ions at 30 cm from the outlet was measured to be ~4.2×107 ions / (s·m2), and the antibacterial rate was ≥99%.

[0043] Example 2

[0044] This embodiment mainly introduces the second design of an air purification negative oxygen antibacterial duct designed in this application. It uses 1.2mm thick color steel plate as outer steel plate 1 and inner steel plate 2, and the insulation material layer is made of 5cm thick insulation rock material to make a 30*30*120cm square duct.

[0045] A 30µm special modified coating 4 is applied to the surface of the inner steel plate 2. Fluorocarbon resin, curing agent and modified rare earth material are mixed in a ratio of 4:1:1, and 1.5 times the amount of diluent is added. The mixture is then sprayed onto the surface of the inner steel plate and dried at 40℃ for 30 minutes to set the shape.

[0046] The air duct was placed on a special test bench, and at a wind speed of 1 m / s, the concentration of negative oxygen ions at 30 cm from the outlet was measured to be ~8.3×10⁸ ions / (s·m²), with an antibacterial rate of ≥99.99%.

[0047] Example 3

[0048] This embodiment mainly introduces the third design of an air purification negative oxygen antibacterial duct designed in this application. It uses 1.5mm thick color steel plate as outer steel plate 1 and inner steel plate 2, and the insulation material layer is made of 8cm thick insulation rock material to make a 30*30*120cm square duct.

[0049] A 30µm special modified coating 4 is applied to the surface of the inner steel plate. Fluorocarbon resin, curing agent and modified rare earth material are mixed in a ratio of 4:1:0.01, and 0.5 times the amount of diluent is added. The mixture is then sprayed onto the surface of the inner steel plate and dried at 40℃ for 45 minutes to set the shape.

[0050] The air duct was placed on a special test bench, and at a wind speed of 1 m / s, the concentration of negative oxygen ions at 30 cm from the outlet was measured to be ~6×10⁵ ions / (s·m²), with an antibacterial rate of ≥99%.

[0051] Example 4

[0052] This embodiment mainly introduces the fourth design of an air purification negative oxygen antibacterial duct designed in this application. It uses 1.5mm thick color steel plate as outer steel plate 1 and inner steel plate 2, and the insulation material layer is made of 8cm thick insulation rock material to make a 30*30*240cm square duct.

[0053] A special modified coating 45µm was applied to the surface of the inner steel plate. Fluorocarbon resin, curing agent and modified rare earth material were mixed in a ratio of 4:1:0.01, and 0.5 times the amount of diluent was added. The mixture was then sprayed onto the surface of the inner steel plate and dried at 40℃ for 45 minutes to set the shape.

[0054] The air duct was placed on a special test bench, and at a wind speed of 1 m / s, the concentration of negative oxygen ions at 30 cm from the outlet was measured to be ~6×106 ions / (s·m2), with an antibacterial rate of ≥99.9%.

[0055] Example 5

[0056] This embodiment mainly introduces the fifth design of an air purification negative oxygen antibacterial duct designed in this application. It uses 1.0mm thick color steel plate as outer steel plate 1 and inner steel plate 2, and the insulation material layer is made of 3cm thick insulation rock material to make a 30*30*80cm square duct.

[0057] A 30µm special modified coating 4 is applied to the surface of the inner steel plate. Fluorocarbon resin, curing agent and modified rare earth material are mixed in a ratio of 4:1:0.01, and 0.5 times the amount of diluent is added. The mixture is then sprayed onto the surface of the inner steel plate and dried at 40℃ for 30 minutes to set the shape.

[0058] The air duct was placed on a special test bench, and at a wind speed of 1 m / s, the concentration of negative oxygen ions at 30 cm from the outlet was measured to be ~2×106 ions / (s·m2), with an antibacterial rate of ≥99%.

[0059] Through the above experiments, it can be seen that the negative oxygen antibacterial air duct for air purification designed in this application forms a special modified coating on the inner surface of the air duct by applying a special modified coating made of rare earth, natural mineral powder, metal ions, fluorocarbon resin, curing agent, and modified rare earth materials. The crystalline components in the special modified coating have piezoelectric and pyroelectric effects under wind pressure. The pressure and temperature changes in the air duct cause a potential difference on the surface of the special modified coating material, which ionizes the surrounding air. The ionized electrons act on the nearby water and oxygen molecules and convert them into negative ions. The negative oxygen ions are sent into the indoor environment with the air intake system, improving human comfort. At the same time, the generation of the potential difference can effectively destroy the growth and reproduction environment of bacteria and viruses, achieving antibacterial and bacteriostatic effects and reducing the harm of bacteria and viruses carried in the air to the human body.

[0060] The above description is merely a preferred embodiment of the present invention and does not limit the scope of protection of the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any changes, modifications, substitutions, integrations, and parameter alterations to these embodiments within the spirit and principles of the present invention, achieved through conventional substitutions or by achieving the same function without departing from the principles and spirit of the present invention, fall within the scope of protection of the present invention.

Claims

1. A negative oxygen antibacterial air duct for air purification, characterized in that, It includes an outer steel plate (1), an inner steel plate (2), a thermal insulation material layer (3), and a special modified coating (4); The outer steel plate (1) is set outside the insulation material layer (3); The inner steel plate (2) is disposed inside the insulation material layer (3); The inner steel plate (2) has a special modified coating (4) on its inner ring surface.

2. The negative oxygen antibacterial air duct for air purification according to claim 1, characterized in that, The special modified coating (4) includes fluorocarbon coating and modified rare earth material, and the ratio of fluorocarbon coating and modified rare earth material is 20 to 150:

1.

3. The negative oxygen antibacterial air duct for air purification according to claim 2, characterized in that, The fluorocarbon coating comprises fluorocarbon resin and a curing agent, wherein the ratio of the fluorocarbon resin to the curing agent is 2 to 6:

1.

4. The negative oxygen antibacterial air duct for air purification according to claim 2, characterized in that, The modified rare earth material includes rare earth, natural mineral powder, and metal ions; the ratio of rare earth, natural mineral powder, and metal ions is 1:4 to 16:0.1 to 1.

5. The negative oxygen antibacterial air duct for air purification according to claim 4, characterized in that, The particle size of the modified rare earth material is less than 35 μm.

6. The negative oxygen antibacterial air duct for air purification according to claim 1, characterized in that, The outer steel plate (1) has a thickness of 0.6 to 2.5 mm, the inner steel plate (2) has a thickness of 0.6 to 2.5 mm, the special modified coating (4) has a thickness of 20 to 60 mm, and the insulation material layer (3) has a thickness of 2 to 10 mm.

7. The negative oxygen antibacterial air duct for air purification according to claim 1, characterized in that, The negative oxygen antibacterial air duct is a square air duct with a ratio of 30:30:30 to 300cm.

8. The method for preparing a negative oxygen antibacterial air duct for air purification according to claim 1, characterized in that, include: Step S1: Prepare the outer steel plate (1), inner steel plate (2), and insulation material layer (3) according to the production specifications. Step S2: Prepare a special modified coating and apply it to the inner surface of the inner steel plate (2) and dry it. Step S3: Prepare the negative oxygen antibacterial air duct by forming the outer steel plate (1), inner steel plate (2), and insulation material layer (3) according to the design requirements.

9. The method for preparing a negative oxygen antibacterial air duct for air purification according to claim 8, characterized in that, The preparation method of the special modified coating includes: Step S21: Mix fluorocarbon resin, curing agent, and modified rare earth material in a ratio of 4:1:0.01 to 1 to form a preliminary coating. Step S22: Dilute the initial coating at a ratio of 1:0.2 to 3 to form a special modified coating.

10. The method for preparing a negative oxygen antibacterial air duct for air purification according to claim 8, characterized in that, The drying conditions for the special modified coating are drying at 40°C for 20–60 minutes.

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