CN112023239A - Plasma hand disinfection device - Google Patents
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- CN112023239A CN112023239A CN202010876576.XA CN202010876576A CN112023239A CN 112023239 A CN112023239 A CN 112023239A CN 202010876576 A CN202010876576 A CN 202010876576A CN 112023239 A CN112023239 A CN 112023239A
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Abstract
The invention discloses a plasma hand disinfection device which is mainly applied to disinfection of hands of people. The disinfection device mainly comprises: the device comprises an air inlet, a fan, a water tank, a plasma generator, an ozone decomposition device, a plasma excitation power supply, an infrared induction switch, an air outlet and a sterilizer shell. The working principle of the disinfection device is as follows: the plasma generator is used for generating plasma, the fan works to blow the generated plasma onto the hand to sterilize the hand, and the sterilization mode is safe. Before entering the plasma generator, the air passes through the water tank to increase the humidity of the air, so that the concentration of O, OH free radicals generated after plasma ionization is increased, and the disinfection effect is enhanced. The air carrying plasma absorbs ozone through the ozone adsorption device, so that the ozone emission reaches the standard, the adverse effect caused by the over-standard ozone concentration is avoided, and the safety is ensured while the disinfection effect is ensured.
Description
Technical Field
The invention relates to the technical field of sterilization and disinfection, in particular to a plasma hand disinfection machine for hand disinfection.
Background
Currently, the world faces the threat of new coronavirus, and an effective sterilization mode is an important measure for avoiding cross infection of people. The traditional hand disinfection modes comprise wet disinfection technologies such as disinfectant disinfection, ozone disinfection, sodium hypochlorite disinfection and ultraviolet disinfection, and have the defects of poor disinfection effect, damage to human bodies caused by residual byproducts and the like. The plasma disinfection technology is a novel, green and dry disinfection technology developed in recent years, has the advantages of no chemical residue, safe operation and the like, and can overcome the defects of the existing disinfection method.
Chinese patent CN202568952U discloses a plasma hand cleaning and disinfecting machine, which is characterized in that hands are placed in a cavity in a housing, plasma generators are arranged at two sides of the cavity, and generated plasma enters the cavity to disinfect the hands. The patent can satisfy the hand disinfection demand to a certain extent, but because the hand is located the discharge area in the middle of the plasma generator, has certain danger. Chinese patent CN104146858 discloses a low-temperature plasma medical hand disinfection machine, when a user uses the disinfection machine, the user needs to put the hand on a contactable grounding net, and the plasma electrode generates plasma to disinfect the hand, which also has potential safety hazard. Chinese patent CN103357114A discloses a plasma hand disinfection machine, which uses a plasma generator to generate plasma, and uses a blower to blow the generated plasma onto the hand for disinfection, the main disinfection substance is ozone generated by the plasma, and there is a risk of ozone poisoning. The safety standard of ozone is 0.15ppm specified in the industrial health Standard established by the Ministry of health of China, and excessive ozone can cause various diseases of human bodies, such as dizziness, headache, neurointoxication and the like.
In conclusion, the existing plasma hand disinfection mode has potential safety hazards, and practical application of the existing plasma hand disinfection mode is limited.
Disclosure of Invention
In order to solve the above problems, the present invention provides a plasma hand disinfection device, which mainly comprises: the device comprises a fan, a water tank, a plasma generator, an ozone decomposition device, a plasma excitation power supply, an infrared induction switch, a sterilizer shell and a cloth bag filtering device; the working principle of the sterilizer is as follows: generating plasma by using a plasma generator, blowing the generated plasma onto a hand by using a fan to disinfect the hand; the plasma generator is powered by a plasma excitation power supply, and when the infrared induction switch induces hands of people, the plasma excitation power supply and the fan are started to work simultaneously; the fan drives the air to pass through the water tank before entering the plasma generator so as to increase the humidity of the air, thereby increasing the concentration of O, OH free radicals generated after ionization of the plasma and enhancing the disinfection effect; excessive ozone is decomposed into nontoxic oxygen through an ozone decomposition device, so that the ozone emission reaches the standard; compared with the existing plasma hand disinfection device, the plasma hand disinfection device has the advantages that: the concentration of active free radicals generated after plasma ionization is increased by increasing the air humidity, the disinfection efficiency is higher, and meanwhile, the ozone decomposition device decomposes ozone to enable the ozone emission to reach the standard; the plasma active substances are blown out of the reaction cavity by the fan, the hands are positioned below the air outlet instead of the discharge area, and the disinfection mode is safer.
The invention provides a plasma hand disinfection device, which comprises:
the device comprises an air inlet, a fan, a water tank, a plasma generator, a plasma excitation power supply, an ozone decomposition device, an infrared induction switch, an air outlet, a sterilizer shell and a cloth bag filtering device.
The preferable area range of the air inlet is 100-150cm2The shape is rectangular, circular or elliptical, but is not limited thereto; the air inlet is provided with a cloth bag filtering device, the size and the shape of the cloth bag filtering device are consistent with those of the air inlet, and the cloth bag filtering device is used for removing large particle substances such as oil smoke, dust and the like in the air.
The fan is used for driving air entering from the air inlet to pass through the water tank and enter the plasma generator to generate plasma; the fan is positioned in the middle of the shell of the disinfector, particularly positioned at the position 5-10cm below the air inlet; for rapid passage of air through the outlet, a preferred air flow rate is greater than 2m3And/min, preferably, the diameter of the air outlet of the fan is not more than 10 cm.
The water tank is used for increasing the humidity of air blown downwards by the fan, so that the concentration of O, OH free radicals generated after plasma ionization is increased, and the disinfection effect is enhanced; the water tank is positioned under the fan, and the side length of each side of the water tank is larger than the diameter of an air outlet of the fan; the shape of the sink is preferably square, but is not limited thereto.
The plasma generator is mainly used for ionizing air, is positioned right below the water tank and is 5-10cm away from the water tank; aiming at the application requirements of different occasions, the plasma generator can adopt a strong ionization mode and a weak ionization mode.
The strong ionization mode generator is a dielectric barrier discharge type generator and consists of a high-voltage electrode plate, an electrode mounting plate, a ground electrode sleeve, a quartz dielectric tube, a bolt and a gasket; the high-voltage electrode, the quartz medium tube and the ground electrode sleeve are positioned at coaxial positions, and the discharge area is between the high-voltage electrode and the quartz medium tube; the electrode mounting plate is used for connecting the high-voltage electrode plate, the quartz medium tube and the ground electrode sleeve, and the material of the mounting plate is preferably an insulating material such as polytetrafluoroethylene, ceramic and the like, but is not limited to the materials; the high-voltage electrode plate is uniformly provided with 4 multiplied by 4 small holes for fixing the high-voltage electrode, and the high-voltage electrode plate is preferably made of materials with good conductivity and no harm to human bodies, such as copper, stainless steel, aluminum and the like, but not limited to the materials; the plasma generator in the strong ionization mode is preferably used in places where sterilization requirements are high, such as hospitals, banks, and the like, but is not limited thereto.
The weak ionization mode generator adopts a corona discharge type plasma generator which is divided into two types, namely a needle-mesh type plasma generator and a wire-cylinder type plasma generator.
The needle-mesh type plasma generator consists of a fixed mounting shell, a stainless steel mesh, a stainless steel needle, a copper mesh and a baffle plate; a high-voltage electrode of the high-voltage power supply is connected with the stainless steel net, and a ground electrode of the high-voltage electrode is connected with the copper net; the fixed mounting shell is used for fixing the stainless steel mesh and the copper mesh and connecting the plasma generator with the shell of the sterilizer; the inner side of the groove is provided with a stainless steel net and a copper net, the stainless steel net and the copper net are arranged in parallel, and the distance between the stainless steel net and the copper net is 15-20 mm; the front part is provided with a groove for fixing a baffle plate, and the baffle plate is used for enabling the plasma generator to form a closed space.
The wire-cylinder type plasma generator consists of a lower electrode mounting plate, an upper electrode mounting plate, a copper wire, a supporting shaft and an electrode sleeve; the copper wire and the electrode sleeve are positioned on the same axis, and the discharge area is positioned between the copper wire and the electrode sleeve; the upper electrode mounting plate and the lower electrode mounting plate are both provided with arc holes, the arc holes are used for allowing air blown downwards by the fan to flow out, and the centers of the arc holes are provided with small holes for fixing copper wires; stepped holes are formed at two corners of the upper electrode mounting plate and the lower electrode mounting plate and used for fixing a supporting shaft and connecting the upper electrode mounting plate and the lower electrode mounting plate together; the upper and lower electrode mounting plates are preferably made of metal materials with good conductivity, such as copper, stainless steel and the like, but not limited to the above materials; the weak ionization mode plasma generator is preferably used in places with relatively low sterilization requirements, such as toilets, canteens, etc., but is not limited thereto.
The ozone decomposition device is used for decomposing excessive ozone generated by the plasma generator into oxygen so as to prevent the human body from being damaged by excessive ozone; the ozone decomposition device is positioned right below the plasma generator, and the preferred distance is 5-10 cm; the ozone decomposing device can be square or rectangular, and the length of each side is larger than or equal to the side length of the plasma generator.
The plasma excitation power supply is used for supplying power to the plasma generator; for the plasma generator in the strong ionization mode, the selected plasma excitation power supply type is a high-frequency high-voltage power supply, a short pulse power supply or a direct-current power supply, and the voltage output power is more than 300W; for a plasma generator in a weak ionization mode, a high-voltage direct-current power supply is preferred; the plasma generator in the strong ion mode is preferably a high-frequency high-voltage power supply or a short-pulse power supply.
The infrared induction switch is used for inducing hands of people and controlling the working state of the plasma disinfection machine at the same time, and when the situation that the hands stretch into an induction area is detected, the infrared induction switch controls the fan to start working and triggers the plasma excitation power supply to supply power at the same time; when the hand is moved out, the infrared inductive switch controls the fan to be powered off and simultaneously disconnects the plasma excitation power supply; the infrared induction switch is positioned behind the air outlet, and the optimal distance between the infrared induction switch and the air outlet is 5-8 cm.
The disinfection machine shell is used for containing all the components, and the shell is preferably made of materials with good insulation and heat resistance, such as ABS, PP and the like, but is not limited to the materials.
The invention has the beneficial effects that: such as
Firstly, the method comprises the following steps: the plasma is used for disinfecting the hands, and the disinfecting method is green, safe, free of side effects and high in disinfecting efficiency;
secondly, the method comprises the following steps: according to the invention, the water tank is used for increasing the air humidity so as to increase the concentration of O, OH free radicals after air ionization, the ozone decomposition device is used for removing ozone, and the active free radical disinfection is used for replacing ozone disinfection, so that the environmental pollution and the damage to human bodies caused by the over-standard ozone are avoided;
thirdly, the method comprises the following steps: the hand-washing machine utilizes the fan to blow the plasma generated by the plasma generator to the hand for disinfection, and the hand does not need to be placed on the plasma electrode when in use, thereby avoiding the danger of the hand in a discharge area;
fourthly: the invention designs three plasma generators, namely a generator in a strong ionization mode and a generator in two weak ionization modes, wherein the generator in the strong ionization mode can be used in occasions with higher disinfection requirements such as hospitals and banks, and the generator in the weak ionization mode can be used in occasions with lower disinfection requirements such as canteens, stations and toilets; both modes of generators can cover the vast majority of daily life where disinfection is required.
Drawings
FIG. 1 is a schematic diagram of a plasma hand sanitizer;
1. an air inlet; 2. a fan; 3. a water tank; 4. a plasma generator; 5. an ozone decomposing device; 6. an air outlet; 7. a plasma excitation power supply; 8. an infrared inductive switch; 9. a sterilizer housing; 101. a cloth bag filter device;
FIG. 2 is a perspective view of a dielectric barrier discharge type electrode;
10. a high voltage electrode plate; 11. an electrode mounting plate; 12. a ground electrode bushing; 13. a quartz medium tube; 14. a bolt; 15. a gasket;
FIG. 3 is a perspective view of a dielectric barrier discharge type electrode high voltage electrode plate;
16. a circular arc hole; 17. a high voltage electrode;
fig. 4 is a perspective view of a needle-mesh type plasma generator;
18. fixing the mounting shell; 19. a baffle plate; 20. a stainless steel mesh;
FIG. 5 is a cross-sectional view of a needle-mesh type plasma generator;
21. a stainless steel needle; 22. a copper mesh;
fig. 6 is a perspective view of a wire-and-barrel type plasma generator;
23. a lower electrode mounting plate; 24. a support shaft; 25. an upper electrode mounting plate;
fig. 7 is a sectional view of a wire-and-barrel type plasma generator;
26. an electrode sheath; 27. a copper wire;
Detailed Description
The present invention is described in further detail below with reference to specific examples.
The embodiment of the invention provides a plasma sterilizer device. Mainly comprises an air inlet (1), a fan (2), a water tank (3), a plasma generator (4), an ozone decomposition device (5), an air outlet (6), a plasma excitation power supply (7), an infrared induction switch (8), a sterilizer shell (9) and a cloth bag filtering device (101); when the sterilizer is powered on and the main switch is turned on, when a hand stretches into the induction area, the infrared induction switch (8) receives the reflected infrared signal, controls the fan (2) to start working, and controls the plasma excitation power supply (7) to supply power to enable the plasma generator (4) to work to generate plasma; when the time is delayed for a certain time or the hand leaves the induction area, the infrared induction switch (8) controls the fan (2) and the plasma excitation power supply (7) to stop working at the same time, and the infrared induction switch (8) is positioned behind the air outlet (6) and is 5cm away from the air outlet (6); in the disinfection process, air is sucked from the air inlet (1), and the area of the air inlet (1) is 100cm2The shape of the air inlet is rectangular, and large particle substances such as oil smoke, dust and the like in the air are removed after being filtered by a cloth bag filter device (101) at the air inlet (1); the fan (2) drives air downwards to pass through the water tank (3) to increase air humidity, the fan (2) is positioned in the middle of the shell (9) of the disinfection machine, the upper part of the fan is positioned at the position 5cm below the air inlet (1), and the diameter of the air outlet (6) is 90 cm; the water tank (3) is positioned right below the fan (2), is square and has the side length of 95 cm; tong (Chinese character of 'tong')The concentration of O, OH free radicals generated after ionization of the air passing through the water tank (3) is increased by the plasma generator (4), the air carrying the plasma generated by the plasma generator (4) is discharged from the air outlet (6), and the generated ozone is decomposed into nontoxic oxygen by the ozone decomposition device (5) in the middle, so that the adverse effect of the excessive ozone on the human body is avoided; the ozone decomposition device (5) is positioned under the plasma generator (4) and is 5cm away from the plasma generator (4); the shape of the ozone decomposing device (5) is a rectangle, and the size is 150 multiplied by 100 multiplied by 50 mm; the sterilizer casing (9) is used for all the components, and the casing is made of ABS material with good impact resistance, heat resistance and insulation.
The plasma generator (4) is divided into a generator in a strong ionization mode and a generator in a weak ionization mode, and the size of the plasma generator (4) in the embodiment is 100 multiplied by 25 mm; the generator of the strong ionization mode is a dielectric barrier discharge type plasma generator, as shown in fig. 2 to 3. The dielectric barrier discharge type generator consists of a high-voltage electrode plate (10), an electrode mounting plate (11), a ground electrode sleeve (12), a quartz dielectric tube (13), a bolt (14) and a gasket (15); wherein, the high-voltage electrode plate is provided with an arc hole (16) and a high-voltage electrode (17). The ground electrode sleeve (12) is positioned outside the quartz medium tube (13), the high-voltage electrode (17) of the high-voltage electrode plate (10) is positioned inside the quartz medium tube (13), the high-voltage electrode (17), the quartz medium tube (13) and the ground electrode sleeve (12) are positioned at coaxial positions, and a discharge area is between the high-voltage electrode (17) and the quartz medium tube (13); the electrode mounting plate (11) is used for connecting the high-voltage electrode plate (10), the quartz medium tube (13) and the ground electrode sleeve (12) by using a bolt (14), the gasket is positioned between the bolt (14) and the electrode mounting plate (11), and the electrode mounting plate (11) is made of polytetrafluoroethylene with better insulating property and heat resistance; the high-voltage electrode plate (10) is uniformly provided with 4 multiplied by 4 small holes for fixing the high-voltage electrodes (17), and circular holes (16) are uniformly formed around the small holes so as to facilitate the blowing of wind blown by a fan; the high-voltage electrode plate (10) is made of stainless steel which has good conductivity and is harmless to human bodies.
The weak ionization mode generator adopts a corona discharge type plasma generator which is divided into two types, namely a needle-mesh type plasma generator and a wire-cylinder type plasma generator.
Fig. 4-5 are block diagrams of a needle-mesh type plasma generator. The high-voltage power supply comprises a fixed mounting shell (18), a baffle plate (19), a stainless steel net (20), a stainless steel needle (21) and a copper net (22), wherein a high-voltage electrode of a high-voltage power supply (7) is connected with the stainless steel net (20), and a ground electrode is connected with the copper net (22); the fixed mounting shell (18) plays a role in fixing the stainless steel net (20) and the copper net (22) and connecting the plasma generator (4) with the sterilizer shell (9), the inner side of the fixed mounting shell is provided with a groove for mounting the stainless steel net (20) and the copper net (22), the stainless steel net (20) and the copper net (22) are arranged in parallel, and a 15mm gap is formed between the stainless steel net (20) and the copper net (22); the front part is provided with a groove for fixing a baffle plate (19) so as to enable the plasma generator (4) to form a closed space and reduce the outward diffusion of the generated plasma; when the plasma generator (4) works, a stainless steel needle (21) welded on the stainless steel net (20) is used as a tip to discharge in air to generate plasma, and the fan (2) works to blow the plasma to hands.
Fig. 6-7 are structural views of a wire-and-cylinder type plasma generator, which is composed of an upper electrode mounting plate (25), a lower electrode mounting plate (23), a support shaft (24), an electrode sheath (26), and a copper wire (27); the copper wire (27) is used as a high-voltage electrode, the electrode sleeve (26) is used as a ground electrode to discharge in air, and the copper wire (27) and the electrode sleeve (26) are coaxial; the upper electrode mounting plate (25), the lower electrode mounting plate (23) has circular arc holes, there is a 0.5mm aperture in the centre of circular arc hole to fix the copper wire (27); stepped holes are formed at two corners of the electrode mounting plate and used for fixing a supporting shaft (24) and connecting an upper electrode mounting plate (25) and a lower electrode mounting plate (23) together; when the power supply is switched on, the wire electrode discharges in a gap between the copper wire (27) and the electrode sleeve (26) to generate plasma, and meanwhile, air blown by the fan (2) passes through the upper electrode mounting plate (25), and the generated plasma is blown off by the arc-shaped hole in the lower electrode mounting plate (23). The electrode mounting plate is made of copper material with better conductivity.
For the plasma generator (4) in the strong ionization mode, the plasma excitation power supply (7) selected in the embodiment is a high-frequency high-voltage power supply, and the power supply parameters are voltage 10KV, frequency 10KHZ and power 300W; for the plasma generator (4) in the weak ionization mode, the plasma excitation power supply (7) selected in the embodiment is a high-voltage direct-current power supply, the power supply is excited by adopting 6KV voltage, and the power is 100W.
Claims (10)
1. A plasma hand disinfection device is characterized by comprising the following parts:
the device comprises an air inlet (1), a fan (2), a water tank (3), a plasma generator (4), an ozone decomposition device (5), an air outlet (6), a plasma excitation power supply (7), an infrared induction switch (8), a sterilizer shell (9) and a cloth bag filtering device (101); the working principle of the sterilizer is as follows: the plasma generator (4) is used for generating plasma, and the fan (2) blows the generated plasma to the hand for disinfecting the hand and the like; the plasma generator (4) is powered by the plasma excitation power supply (7), and when the infrared induction switch (8) induces the hands of a person, the plasma excitation power supply (7) and the fan (2) are started to work simultaneously; the fan (2) drives air to pass through the water tank (3) before entering the plasma generator (4) from the air inlet (1) so as to increase the air humidity, thereby increasing the O, OH free radical concentration generated after plasma ionization and enhancing the disinfection effect; excessive ozone is decomposed into nontoxic oxygen through an ozone decomposition device (5), so that the ozone emission reaches the standard; the air carrying the plasma is blown to the hand through the air outlet (6) to disinfect the hand.
2. The intake (1) according to claim 1, wherein the preferred area range is 100-150cm2The shape is rectangular, circular or elliptical, but is not limited thereto; the cloth bag filtering device (101) is installed at the air inlet (1), the size and the shape of the cloth bag filtering device are consistent with those of the air inlet, and the cloth bag filtering device is used for removing large particle substances such as oil smoke, dust and the like in the air.
3. The fan (2) according to claim 1, wherein the fan is configured to drive air entering from the air inlet through the water tank (3) and into the plasma generator (4) to generate plasma. The fan (2) is positioned in the middle of the shell (9) of the sterilizer, and is specifically positioned at the position 5-10cm below the air inlet (1); for rapid passage of air through the outlet, a preferred air flow rate is greater than 2m3Min, preferred fan outletThe diameter of the mouth is not more than 10 cm.
4. The sink (3) according to claim 1, wherein it is used to increase the humidity of the air blown downwards by the fan, so as to increase the concentration of O, OH free radicals generated after plasma ionization and enhance the disinfection effect; the water tank is positioned under the fan (2), and the length of each side of the water tank is larger than the diameter of the air outlet of the fan (2). The shape of the water tank (3) is preferably square, but not limited thereto.
5. The plasma generator (4) according to claim 1, characterized in that it is intended to ionize air, located directly below the water bath (3), at a distance of 5-10cm from the water bath (3); aiming at the application requirements of different occasions, the plasma generator (4) can adopt a strong ionization mode and a weak ionization mode.
6. The strong ionization pattern generator and the weak ionization pattern generator according to claim 5 are a dielectric barrier discharge type generator and a corona discharge type generator, respectively; the dielectric barrier type generator consists of a high-voltage electrode plate (10), an electrode mounting plate (11), a ground electrode sleeve (12), a quartz dielectric tube (13), a bolt (14) and a gasket (15); the ground electrode sleeve (12) is positioned outside the quartz medium tube (13), the high-voltage electrode (17) of the high-voltage electrode plate (10) is positioned inside the quartz medium tube (13), the high-voltage electrode (17), the quartz medium tube (13) and the ground electrode sleeve (12) are positioned at coaxial positions, and a discharge area is positioned between the high-voltage electrode (17) and the quartz medium tube (13); the electrode mounting plate (11) is used for connecting the high-voltage electrode plate (10), the quartz medium tube (13) and the ground electrode sleeve (12), and the material of the mounting plate is preferably an insulating material such as polytetrafluoroethylene, ceramic and the like, but not limited to the materials; the high-voltage electrode plate (10) is uniformly provided with 4 multiplied by 4 small holes for fixing the high-voltage electrode (17), and the high-voltage electrode plate (10) is preferably made of materials which have good electrical conductivity and are harmless to human bodies, such as copper, stainless steel, aluminum and the like, but not limited to the materials; the plasma generator in the strong ionization mode is preferably used in places with high disinfection requirements, such as hospitals, banks and the like, but is not limited to the above places; corona discharge type generators are divided into two types, namely needle-mesh type plasma generators and wire-cylinder type plasma generators; the needle-mesh type plasma generator consists of a fixed mounting shell (18), a stainless steel mesh (20), a stainless steel needle (21), a copper mesh (22) and a baffle plate (19); the stainless steel net (20) and the copper net (22) are respectively connected with a high-voltage electrode and a ground electrode of a high-voltage power supply; the fixed mounting shell (18) is used for fixing the stainless steel net (20) and the copper net (22) and connecting the plasma generator (4) with the sterilizer shell (9); the inner side is provided with a groove for mounting a stainless steel net (20) and a copper net (22), the stainless steel net (20) and the copper net (22) are arranged in parallel, and the distance is 15-20 mm; the front part is provided with a groove for fixing a baffle plate (19), and the baffle plate (19) is used for enabling the plasma generator to form a closed space; the line-cylinder type plasma generator consists of an upper electrode mounting plate (25), a lower electrode mounting plate (23), a copper wire (27), a supporting shaft (24) and an electrode sleeve (26); the copper wire (27) and the electrode sleeve (26) are positioned on the same axis, and the discharge area is positioned between the copper wire (27) and the electrode sleeve (26); the upper electrode mounting plate (25) and the lower electrode mounting plate (23) are provided with arc holes, the arc holes are used for allowing air blown out downwards by the fan (2) to flow out, and the centers of the arc holes are provided with small holes for fixing copper wires (27); stepped holes are formed in two corners of the upper electrode mounting plate (25) and the lower electrode mounting plate (23) and used for fixing the supporting shaft (24) and connecting the upper electrode mounting plate (25) and the lower electrode mounting plate (23) together; the upper electrode mounting plate (25) and the lower electrode mounting plate (23) are preferably made of metal materials with good conductivity, such as copper, stainless steel and the like, but not limited to the above materials; the weak ionization mode plasma generator is preferably used in places with relatively low sterilization requirements, such as toilets, canteens, etc., but is not limited thereto.
7. The ozonolysis apparatus (5) according to claim 1, characterized in that it is used to decompose the excess ozone generated by the plasma generator (4) into oxygen to prevent the human body from being harmed by the excess ozone; the ozone decomposition device (5) is positioned right below the plasma generator, and the preferred distance is 5-10 cm; the ozone decomposing device (5) can be square or rectangular, and the length of each side is larger than or equal to the side length of the plasma generator (4).
8. A plasma excitation power supply (7) according to claim 1, characterized in that it is adapted to power a plasma generator (4); for the plasma generator (4) in the strong ionization mode, the selected plasma excitation power supply type is a high-frequency high-voltage power supply, a short-pulse power supply or a direct-current power supply, and the voltage output power is more than 300W; for a plasma generator (4) in weak ionization mode, a high voltage direct current power supply is preferred.
9. The infrared induction switch (8) according to claim 1, characterized in that it is used for sensing human hand and controlling the working state of the plasma sterilizer, when detecting that the hand is inserted into the sensing area, the infrared induction switch (8) controls the fan (2) to start working and triggers the plasma excitation power supply (7) to supply power; when the hand is moved out, the infrared induction switch (8) controls the fan (2) to be powered off and simultaneously disconnects the plasma excitation power supply (7); the infrared induction switch (8) is positioned behind the air outlet (6), and the optimal distance from the infrared induction switch to the air outlet (6) is 5-8 cm.
10. The disinfection machine housing (9) according to claim 1, for containing all the above components, the disinfection machine housing (9) preferably being a material with good insulation and heat resistance such as ABS, PP, etc., but not limited to the above materials.
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| CN202010876576.XA CN112023239A (en) | 2020-08-27 | 2020-08-27 | Plasma hand disinfection device |
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| CN202010876576.XA CN112023239A (en) | 2020-08-27 | 2020-08-27 | Plasma hand disinfection device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112933412A (en) * | 2021-04-13 | 2021-06-11 | 北京化工大学 | Structure and shell design of circulating air plasma sterilizer |
| CN113599060A (en) * | 2021-09-09 | 2021-11-05 | 大连交通大学 | Warming and hand killing facility |
| CN113730623A (en) * | 2021-09-06 | 2021-12-03 | 西安电子科技大学 | Foot pressure-bearing plasma sterilizing device |
| WO2022144596A1 (en) * | 2020-12-28 | 2022-07-07 | Siddharoodha C Angadi | An apparatus and a method for plasma-ozone sanitization |
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| CN113599060A (en) * | 2021-09-09 | 2021-11-05 | 大连交通大学 | Warming and hand killing facility |
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Application publication date: 20201204 |