Handheld plasma disinfecting and killing device

Abstract

The utility model discloses a handheld plasma disinfecting and killing device. The device comprises a machine body, a plasma generation module, an air circulation module and a control module, the machine body comprises a nozzle, a machine main body and a handheld part; the handheld part is arranged at the bottom of the machine body, and an insulating shell is arranged on the outer wall of the machine body; the plasma generation module is arranged in the machine body, is connected with the nozzle and comprises a direct-current power supply, a high-voltage module and a high-voltage electrode, the high-voltage electrode comprises a stainless steel disc with a through hole in the middle as a positive electrode and a plurality of copper bars vertically fixed on the copper disc, and a dielectric layer is clamped between the two electrodes; the air circulation module is arranged in the machine body, is arranged on one side of the plasma generation module opposite to the nozzle, and is connected with the control module to adjust opening and closing of the control module; the control module is located in the machine body, connected with the high-voltage module and the air circulation module through wires and used for adjusting the working state. The device is portable, efficient, safe and low in cost.

Description

Technical Field

[0001] The utility model relates to a handheld plasma disinfection device. Background Art

[0002] At present, air pollution poses a serious threat to human health. Microorganisms in the air (including bacteria, viruses, fungi, allergens, etc.) can cause various infectious diseases and allergic reactions, such as influenza, tuberculosis, allergic rhinitis and asthma. Unlike other components in the air, microorganisms have the characteristics of self-replication, contagiousness and no obvious symptoms in the early stage of infection, which makes them a greater threat to public health. Once the infection spreads, these microorganisms can spread rapidly among the population, leading to a large-scale health crisis. As people's health awareness increases, the demand for disinfection of germs and purification of the air is increasing. Traditional air purification and disinfection technologies include activated carbon adsorption, photocatalyst, ultraviolet irradiation, ozone disinfection, and chemical reagent treatment. Although these traditional technologies have certain effects, they have the disadvantages of low disinfection efficiency, long time, harmful to the human body, and many restrictions on use. Especially in the application of homes and public places, safety and convenience issues are particularly prominent.

[0003] As an emerging air purification and disinfection technology, low-temperature plasma technology is recognized as a relatively promising green disinfection technology due to its advantages such as high efficiency, no pollution and easy operation. Low-temperature plasma can produce a large number of active species (such as free radicals, ions, electrons, etc.) at room temperature. These active species can quickly destroy the cell structure of microorganisms, while oxidizing and degrading harmful gases and pollutants in the air to achieve efficient purification. Therefore, the development of a portable, easy-to-operate and efficient handheld low-temperature plasma disinfection instrument has very important and wide application value. Utility Model Content

[0004] The utility model aims to provide a handheld plasma disinfection device.

[0005] The utility model provides a portable, efficient, safe and low-cost air and surface disinfection equipment, which can not only quickly kill germs and harmful substances in the air, but also can be flexibly applied through the handheld design to meet the disinfection needs of different places.

[0006] The utility model provides a handheld plasma disinfection device, comprising a body, a plasma generation module, an air circulation module, and a control module;

[0007] The machine body comprises a nozzle, a machine body and a handheld component; the nozzle is arranged on the machine body, and the nozzle is used to spray the treated plasma; the handheld component is arranged at the bottom of the machine body; an insulating shell is arranged on the outer wall of the machine body, and is used to insulate the machine body from the outside;

[0008] The plasma generating module is arranged in the body and connected to the nozzle via a connecting pipe;

[0009] The plasma generation module comprises a DC power supply, a high-voltage module and a high-voltage electrode, wherein the high-voltage electrode comprises a positive electrode and a negative electrode, a dielectric layer is sandwiched between the two electrodes, the positive electrode is a stainless steel disc, a through hole is arranged in the middle of the stainless steel disc, the negative electrode comprises a copper disc and a plurality of copper rods, the copper rods are vertically fixed on the copper disc, the DC power supply is connected to the high-voltage electrode through the high-voltage module via an electric wire, the high-voltage module converts the DC power supply into a high-voltage power supply, and applies it between the two electrodes to ionize the gas to form plasma;

[0010] The air circulation module is arranged in the body and at a side of the plasma generation module opposite to the nozzle, and is connected to the control module through an electric wire, and the control module adjusts its opening and closing; when the air circulation module is in a working state, the generated airflow is processed by the plasma generation module to form plasma, and is ejected through the nozzle;

[0011] The control module is located in the machine body, connected with the high-voltage module and the wind circulation module through electric wires, and is used for adjusting the working states of the plasma generation module and the wind circulation module.

[0012] In the above-mentioned handheld plasma disinfection device, the nozzle is detachably connected to the main body of the machine.

[0013] In the above-mentioned handheld plasma disinfection device, the nozzle is in the shape of a hollow truncated cone, and is connected to the main body of the machine through the bottom surface of the truncated cone; the nozzle can be designed as a multifunctional nozzle with the function of adjusting the spray angle and the spray intensity to meet different disinfection needs.

[0014] In the above-mentioned handheld plasma disinfection device, the main body of the machine is a hollow cylinder, which is connected to the nozzle through a bottom surface of the cylinder, and the handheld component is arranged on the side wall of the cylinder.

[0015] In the above-mentioned handheld plasma disinfection device, the diameter of the stainless steel disc is the same as the diameter of the copper disc.

[0016] In the above-mentioned handheld plasma disinfection device, the diameter of the copper rod may be 2 to 4 mm, specifically 3.3 mm.

[0017] In the utility model, the negative electrode is fixed on a copper plate with a copper rod, which is a needle-shaped electrode for concentrating the electric field strength, promoting gas ionization, and forming plasma; the tip of the needle-shaped electrode can generate extremely high local electric field strength, thereby improving the plasma generation efficiency and the disinfection effect.

[0018] In the above-mentioned handheld plasma disinfection device, the number of the copper rods can be 3 to 10, preferably 6.

[0019] In the above-mentioned handheld plasma disinfection device, the air circulation module includes a fan or a centrifugal blower and a corresponding return air component, and the fan or the centrifugal blower is connected to the control module through an electric wire.

[0020] In the above-mentioned handheld plasma disinfection device, the control module includes a switch and an indicator light, and the switch and the indicator light are arranged at the handheld component to facilitate user operation.

[0021] In the utility model, the nozzle and the insulating shell are both made of insulating materials, specifically, they can be made of non-conductive materials such as plastic and quartz.

[0022] In the utility model, the machine body is made of light insulating material, which increases the operational stability and can be applied to various occasions.

[0023] The utility model has the following beneficial effects:

[0024] 1. Efficient disinfection

[0025] Low-temperature plasma technology is used to quickly kill germs and harmful substances in the air through high-energy electrons and active free radicals. Compared with traditional disinfection technology, the present invention can achieve efficient disinfection in a shorter time, greatly improving work efficiency.

[0026] 2. Strong portability

[0027] The handheld design and the use of lightweight materials of the present invention make the device portable and easy to carry and operate by users, making it suitable for disinfection needs in various places such as homes, offices, and hospitals.

[0028] 3. High security

[0029] The housing is made of insulating material to effectively prevent the risk of electric shock and ensure the safety of users during use. The high-voltage module is equipped with multiple protection mechanisms, including overvoltage protection, overcurrent protection and short-circuit protection, which further improves the safety of the equipment.

[0030] 4. Low-cost operation

[0031] The equipment has low power consumption and adopts efficient high-pressure modules and air circulation modules to reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the handheld plasma disinfection device of the utility model.

[0033] The marks in the figure are as follows:

[0034] 1 Nozzle; 2 Stainless steel disc (positive electrode); 3 Thin copper rod (negative electrode); 4 Copper disc (negative electrode); 5 Fan; 6 High-voltage module; 7 Battery; 8 Control module; 9 Wires; 10 Insulating shell. DETAILED DESCRIPTION

[0035] To facilitate those skilled in the art to understand the technical solution, the utility model will be further described below in conjunction with the drawings in the embodiments, and the embodiments described are not intended to limit the utility model. All other embodiments obtained by those skilled in the art without creative work based on the utility model are within the scope of protection of the utility model.

[0036] The utility model provides a handheld plasma disinfection device, comprising a body, a plasma generating module, an air circulation module and a control module; the plasma generating module and the air circulation module are arranged in the body, the air circulation module is connected to the return air component, and a switch and an indicator light are arranged at the handle at the bottom of the body.

[0037] In the utility model, low-temperature plasma has high-energy electrons and active free radicals, which can effectively destroy the cell wall and DNA structure of pathogens and achieve rapid disinfection. The temperature of low-temperature plasma is low, does not damage the surrounding environment and equipment, and has high safety. Through the above principles, the plasma disinfection device of the present invention can stably and efficiently generate low-temperature plasma for disinfection of air and surfaces. Combined with the handheld design, it is convenient for users to flexibly apply it in different places to meet diverse disinfection needs.

[0038] Example

[0039] The utility model handheld plasma disinfection device comprises a body, a plasma generating module, an air circulation module, and a control module. Figure 1 As shown:

[0040] (1) Body

[0041] The machine body is the main bearing structure of the equipment, which is made of lightweight materials and is easy to hold and operate. The machine body includes a nozzle 1, a machine body and a handheld component; the nozzle 1 is arranged on the machine body, and the nozzle 1 is used to spray the treated plasma. The handheld component is arranged at the bottom of the machine body, and an insulating shell is arranged on the outer wall of the machine body.

[0042] In order to ensure safe use, the body shell (i.e., insulating shell 10) is made of insulating material (such as plastic) to effectively prevent the risk of electric shock and ensure the safe use of the equipment in various environments. The nozzle 1 is arranged at the front end of the body and is connected to the plasma generating module through a connecting tube for spraying treated plasma. The nozzle 1 is designed to be detachable for easy cleaning and maintenance. The nozzle 1 is truncated cone-shaped and is connected to the body of the machine through the truncated cone-shaped bottom surface; the nozzle 1 can be designed as a multifunctional nozzle with the function of adjusting the spray angle and spray intensity to meet different disinfection needs.

[0043] The main body of the machine is a cylinder, which is connected to the nozzle through a bottom surface of the cylinder, and a hand-held component is set on the side wall of the cylinder. The cylindrical structure is 120mm long, 50mm in outer diameter, and 47mm in inner diameter; the truncated cone-shaped nozzle is 80mm long, with an outer diameter of 40mm and an inner diameter of 37mm at the bottom, and the outer diameter of the head is 20mm and the inner diameter is 17mm; the hand-held component is 100mm high and 80mm in diameter.

[0044] (2) Plasma generation module

[0045] The plasma generation module is the core component of the present invention, including a DC power supply (specifically a battery 7), a high voltage module 6, and two electrodes (a dielectric layer is sandwiched between the two electrodes). The plasma generation module adopts a dielectric barrier discharge (DBD) configuration, which is a method of generating plasma by gas breakdown under the action of a high voltage electric field. This configuration has the advantages of simple structure, convenient operation, and high energy utilization.

[0046] The high-voltage electrode includes a positive electrode and a negative electrode, with a dielectric layer sandwiched between the two electrodes. The positive electrode is a stainless steel disc 2 (diameter 47mm) with a through hole in the middle, and the negative electrode is 6 thin copper rods 3 fixed on a copper disc 4 (diameter consistent with the stainless steel disc). The thin copper rods 3 are 40mm long and 3.3mm in diameter. The copper disc is used to fix the thin copper rods and conduct high-voltage current. The DC power supply (specifically a battery 7) is connected to the high-voltage electrode through a wire 9 via a high-voltage module 6. The high-voltage module 6 converts the DC power supply (i.e., the voltage of the battery 7 12V) into a high-voltage power supply (15-20kV), which is applied between the two electrodes to drive the plasma generation module to ionize the gas to form plasma.

[0047] The plasma generation process is as follows: First, the high-voltage power supply provides electrical energy to the high-voltage module in the plasma disinfection device to generate high-voltage current. When the high-voltage current is applied to the two electrodes, a strong electric field is formed between the electrodes. As the voltage increases, the gas between the electrodes is gradually ionized. When the electric field strength reaches the breakdown voltage of the gas, the gas is completely ionized to form plasma. The dielectric layer blocks the direct discharge between the electrodes, controls the current and voltage during the discharge process, and ensures the stable generation of plasma. Among them, the reason for using a thin copper rod as an electrode is that the tip of the needle-shaped electrode can generate an extremely high local electric field strength, making the gas easier to be ionized at a lower voltage, thereby improving the efficiency of plasma generation.

[0048] (3) Air circulation module

[0049] The air circulation module includes a fan 5 and a return air assembly (a conventional fan-matched return air assembly in the art), and is arranged on one side of the plasma generating module opposite to the nozzle (i.e. Figure 1 The fan 5 is connected to the control module 8 through an electric wire, and the control module 8 regulates its opening and closing. When the air circulation module is in working state, the airflow generated by the fan 5 is processed by the plasma generation module and then ejected through the nozzle 1.

[0050] The size of the fan 5 is 40×40×10 mm, the rotation speed is 5500-8000 rpm, and the air volume is 5.97-8.23 CFM.

[0051] (4) Control module

[0052] The control module 8 is located in the machine body, connected to the high voltage module 6 and the wind circulation module through wires, and is used to adjust the working state of the plasma generation module and the wind circulation module. The switch and indicator light of the control module 8 are located at the handle for easy operation by the user.

Claims

1. A handheld plasma disinfection device, characterized in that: The handheld plasma disinfection device comprises a body, a plasma generation module, an air circulation module, and a control module; The machine body comprises a nozzle, a machine body and a handheld component; the nozzle is arranged on the machine body, and the nozzle is used to spray the treated plasma; the handheld component is arranged at the bottom of the machine body; an insulating shell is arranged on the outer wall of the machine body, and is used to insulate the machine body from the outside; The plasma generating module is arranged in the body and connected to the nozzle via a connecting pipe; The plasma generation module comprises a DC power supply, a high-voltage module and a high-voltage electrode, wherein the high-voltage electrode comprises a positive electrode and a negative electrode, a dielectric layer is sandwiched between the two electrodes, the positive electrode is a stainless steel disc, a through hole is arranged in the middle of the stainless steel disc, the negative electrode comprises a copper disc and a plurality of copper rods, the copper rods are vertically fixed on the copper disc, the DC power supply is connected to the high-voltage electrode through the high-voltage module via an electric wire, the high-voltage module converts the DC power supply into a high-voltage power supply, and applies it between the two electrodes to ionize the gas to form plasma; The air circulation module is arranged in the body and at a side of the plasma generation module opposite to the nozzle, and is connected to the control module through an electric wire, and the control module adjusts its opening and closing; when the air circulation module is in a working state, the generated airflow is processed by the plasma generation module to form plasma, and is ejected through the nozzle; The control module is located in the machine body, connected with the high-voltage module and the wind circulation module through electric wires, and is used for adjusting the working states of the plasma generation module and the wind circulation module.

2. The handheld plasma disinfection device according to claim 1, characterized in that: The nozzle is detachably connected to the machine body.

3. The handheld plasma disinfection device according to claim 1 or 2, characterized in that: The nozzle is in the shape of a hollow truncated cone and is connected to the machine body through the bottom surface of the truncated cone.

4. The handheld plasma disinfection device according to claim 3, characterized in that: The machine body is a hollow cylinder, connected to the nozzle through a bottom surface of the cylinder, and the handheld component is arranged on the side wall of the cylinder.

5. The handheld plasma disinfection device according to claim 1, characterized in that: The diameter of the stainless steel disc is the same as the diameter of the copper disc.

6. The handheld plasma disinfection device according to claim 1, characterized in that: The diameter of the copper rod is 2-4 mm.

7. The handheld plasma disinfection device according to claim 1 or 6, characterized in that: The number of the copper rods is 3 to 10.

8. The handheld plasma disinfection device according to claim 1, characterized in that: The air circulation module includes a fan or a centrifugal blower and a corresponding return air component, and the fan or the centrifugal blower is connected to the control module through an electric wire.

9. The handheld plasma disinfection device according to claim 1, characterized in that: The control module comprises a switch and an indicator light, and the switch and the indicator light are arranged at the handheld component to facilitate user operation.

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