CN111637533A - Plasma air disinfection device for closed single room and central air-conditioning ducts - Google Patents

Abstract

The invention discloses a plasma air sterilizer, wherein a shell comprises an air inlet for leading in air to be sterilized and an air outlet for leading out sterilized air, a cavity for disinfection is formed between the air inlet and the air outlet, a plurality of groups of electrode units are arranged in the cavity to generate plasma for disinfection, the high-voltage electrode plate is connected with a high-voltage pulse power supply, a plurality of first holes are uniformly distributed on the high-voltage motor plate, a plurality of pin electrodes are arranged in the first holes, a first grounding electrode plate is arranged above the upper surface of the high-voltage electrode plate, the distance between the first grounding electrode plate and the high-voltage electrode plate is adjustable, the first grounding electrode plate is uniformly provided with a plurality of second holes, the second grounding electrode plate is arranged below the lower surface of the high-voltage electrode plate and is adjustable in distance from the high-voltage electrode plate, and the second grounding electrode plate is uniformly provided with a plurality of third holes; the air guide unit is arranged at the air inlet to adjust the flow rate of the introduced air to be disinfected.

Description

Plasma air disinfection device for closed single room and central air-conditioning ducts

technical field

The invention belongs to the technical field of air disinfection and sterilization, in particular to a plasma air sterilizer.

Background technique

In recent years, with the gradual deterioration of the global environment, various new viruses have emerged one after another, posing a serious threat to human normal life, production and life safety. For example, SARS in 2003, Middle East respiratory syndrome coronavirus (MERS) in 2012. Studies have shown that the new coronavirus is more contagious than SARS (atypical pneumonia) and MERS (Middle East respiratory syndrome coronavirus), that is, the new virus is becoming more and more infectious, and its transmission routes mainly include respiratory droplet transmission and contact transmission. Every time a new type of virus breaks out, people are caught off guard, and there is no effective drug to deal with it, causing social panic. Under this situation, it is very important to sterilize the air in the living environment. It is the key task to develop effective high-tech and take necessary measures to sterilize the air in the living space and prevent the spread.

Indoors (wards, homes, offices, public places) and building air-conditioning systems are the most important places when the new virus occurs. Currently, the commonly used disinfection methods include high temperature disinfection, ultraviolet disinfection and chemical (disinfectant) disinfection. In order to cut off the transmission route of the virus from the level of air disinfection and surface disinfection, purify the air. High-temperature disinfection can be used for heat-resistant solid objects in medical and daily life, but it is limited by strict size and takes a long time; ultraviolet light can be used for air disinfection and surface disinfection, but the effect is weak, the time is long, there are dead corners, and disinfection The process requires personnel to leave the site; commonly used disinfectants for chemical disinfection include 84 disinfectant, ethylene oxide, alcohol, etc., which are generally used for wiping and disinfection of surfaces and spraying of air. The effect is weaker than high-temperature disinfection, and there are odors, There is a problem of toxic residues. In view of the various problems existing in the existing disinfection methods, it is very urgent to explore new low-temperature green high-efficiency disinfection technologies. That

The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.

SUMMARY OF THE INVENTION

In view of the problems existing in the prior art, the present invention proposes a plasma air sterilizer, which is installed on an indoor stand-alone unit or an air-conditioning duct and is used for high-efficiency sterilization of the air in the living environment. The device has simple structure, low energy consumption, high efficiency drying and sterilization, easy modularization, and works at room temperature.

The object of the present invention is to be achieved through the following technical solutions, and a plasma air sterilizer includes:

a casing, which includes an air inlet for introducing the air to be sterilized and an air outlet for exporting the sterilized air, and a cavity for sterilization is formed between the air inlet and the air outlet;

a plurality of sets of electrode units disposed in the cavity to generate plasma for sterilization, the electrode units comprising,

a high-voltage electrode plate, which is connected to a high-voltage pulse power supply, a plurality of first holes are evenly distributed on the high-voltage motor plate, and a plurality of needle electrodes are arranged in the first holes,

a first ground electrode plate, which is arranged above the upper surface of the high-voltage electrode plate and has an adjustable distance from the high-voltage electrode plate, the first ground electrode plate evenly distributes a plurality of second holes,

a second ground electrode plate, which is arranged below the lower surface of the high-voltage electrode plate and has an adjustable distance from the high-voltage electrode plate, and the second ground electrode plate evenly distributes a plurality of third holes;

An air guide unit is provided at the air inlet to adjust the flow rate of the introduced air to be sterilized.

In the plasma air sterilizer, the needle electrode has a first pole facing the first ground electrode plate and a second pole facing the second ground electrode plate.

In the plasma air sterilizer, the first pole is aligned with the second hole and the second pole is aligned with the third hole.

In the plasma air sterilizer, in the air flow direction from the air inlet to the air outlet, the first hole is aligned with the second hole, and/or the first hole is aligned with the third hole .

In the plasma air sterilizer, the second hole is aligned with the third hole.

In the plasma air sterilizer, the high-voltage electrode plate, the first ground electrode plate and the second ground electrode plate are respectively connected to the inner wall of the casing via the supporting and fixing parts.

In the plasma air sterilizer, the plasma air sterilizer includes a processor and a switch, and the processor is connected to a high-voltage pulse power supply and an air guide unit to adjust the flow rate and plasma intensity.

In the plasma air sterilizer, the plasma air sterilizer includes an air volume adjusting unit for adjusting the air guide unit, a plasma intensity adjusting unit for adjusting the power, a running unit and a switch for controlling the operation of the sterilizer.

In the plasma air sterilizer, the diameter of the second hole and/or the third hole is 0.2mm-10mm, the gap between the needle electrodes is 10mm-50mm, and the length of the needle electrode is 0.5mm-30mm.

In the plasma air sterilizer, the air guide unit includes a fan.

Compared with the prior art, the present invention has the following advantages:

The low-temperature plasma of the present invention can be generated by high-voltage discharge in the air, and the charged particles thereof have strong sterilization ability, and the generated highly active species enter the treated medium, including air and surfaces, and also have strong sterilization ability. , and is harmless to human body under certain working parameters, and can be used for air disinfection and surface disinfection in an all-round way. The multiple groups of electrode units of the present invention have a compact structure, and especially the spaced arrangement of the first and second ground electrode plates significantly improves the plasma generation efficiency. The low-temperature plasma device can reach the level of sterility assurance. In terms of adaptability, plasma under certain discharge conditions can be used for high-efficiency disinfection and harmless to the human body. It is convenient for air disinfection without leaving the field. Surface disinfection. The plasma air sterilizer of the present invention is used for sterilizing indoor and central air-conditioning pipes of closed cells, which not only focuses on the actual needs of fighting the "epidemic", but also has important value in preventing new viruses and infectious diseases in the future.

Description of drawings

Various other advantages and benefits of the present invention will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings in the description are for the purpose of illustrating the preferred embodiments only, and are not to be considered as limiting the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort. Also, the same components are denoted by the same reference numerals throughout the drawings.

In the attached image:

1 is a schematic structural diagram of a plasma air sterilizer according to an embodiment of the present invention;

2 is a schematic structural diagram of a high-voltage electrode plate of a plasma air sterilizer according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of the needle electrode structure of a plasma air sterilizer according to an embodiment of the present invention.

The present invention will be further explained below in conjunction with the accompanying drawings and embodiments.

Detailed ways

Specific embodiments of the present invention will be described in more detail below with reference to FIGS. 1 to 3 . While specific embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be more thoroughly understood, and will fully convey the scope of the present invention to those skilled in the art.

It should be noted that certain terms are used in the description and claims to refer to specific components. It should be understood by those skilled in the art that the same component may be referred to by different nouns. The description and the claims do not use the difference in terms as a way to distinguish components, but use the difference in function of the components as a criterion for distinguishing. As referred to throughout the specification and claims, "comprising" or "including" is an open-ended term and should be interpreted as "including but not limited to". Subsequent descriptions in the specification are preferred embodiments for implementing the present invention, however, the descriptions are for the purpose of general principles of the specification and are not intended to limit the scope of the present invention. The scope of protection of the present invention should be determined by the appended claims.

To facilitate the understanding of the embodiments of the present invention, the following will take specific embodiments as examples for further explanation and description in conjunction with the accompanying drawings, and each accompanying drawing does not constitute a limitation to the embodiments of the present invention.

For better understanding, plasma air sterilizer includes,

The housing 1 includes an air inlet 10 for introducing the air to be sterilized and an air outlet 11 for exporting the sterilized air, and a cavity for sterilization is formed between the air inlet 10 and the air outlet 11;

a plurality of sets of electrode units disposed in the cavity to generate plasma for sterilization, the electrode units comprising,

The high-voltage electrode plate 2 is connected to the high-voltage pulse power supply, the high-voltage motor plate is evenly distributed with a plurality of first holes, and a plurality of needle electrodes 13 are arranged in the first holes 12,

The first ground electrode plate 3 is arranged above the upper surface of the high voltage electrode plate 2 and the distance from the high voltage electrode plate 2 can be adjusted. The first ground electrode plate 3 evenly distributes a plurality of second holes,

The second ground electrode plate 15 is arranged below the lower surface of the high voltage electrode plate 2 and the distance from the high voltage electrode plate 2 is adjustable, and the second ground electrode plate 15 evenly distributes a plurality of third holes;

The air guide unit 14 is provided at the air inlet 10 to adjust the flow rate of the introduced air to be sterilized.

In the preferred embodiment of the plasma air sterilizer, the needle electrode 13 has a first pole facing the first ground electrode plate 3 and a second pole facing the second ground electrode plate 15 .

In a preferred embodiment of the plasma air sterilizer, the first pole is aligned with the second hole and the second pole is aligned with the third hole.

In a preferred embodiment of the plasma air sterilizer, in the air flow direction from the air inlet 10 to the air outlet 11, the first hole is aligned with the second hole, and/or the first hole is paired with Align the third hole.

In a preferred embodiment of the plasma air sterilizer, the second hole is aligned with the third hole.

In the preferred embodiment of the plasma air sterilizer, the high-voltage electrode plate 2 , the first ground electrode plate 3 and the second ground electrode plate 15 are respectively connected to the inner wall of the casing 1 via the supporting and fixing member 4 .

In the preferred embodiment of the plasma air sterilizer, the plasma air sterilizer includes a processor and a switch, and the processor is connected to the high-voltage pulse power supply and the air guide unit 14 to adjust the flow rate and plasma intensity.

In the preferred embodiment of the described plasma air sterilizer, the plasma air sterilizer includes an air volume adjustment unit 6 for adjusting the air guide unit 14, a plasma intensity adjustment unit 7 for adjusting the power, and a plasma intensity adjustment unit 7 for controlling the sterilizer. Running unit 8 and switch 9 in operation.

In the preferred embodiment of the plasma air sterilizer, the diameter of the second hole and/or the third hole is 0.2mm-10mm, the gap between the needle electrodes 13 is 10mm-50mm, and the length of the needle electrode 13 is 0.5mm -30mm.

In the preferred embodiment of the plasma air sterilizer, the air guide unit 14 includes a fan.

In the preferred embodiment of the plasma air sterilizer, the high voltage electrode plate 2 , the first ground electrode plate 3 and the second ground electrode plate 15 are respectively perpendicular to the center line connecting the air inlet 10 and the air outlet 11 .

In the preferred embodiment of the plasma air sterilizer, the central axes of the air inlet 10 and the air outlet 11 are coincident.

In the preferred embodiment of the plasma air sterilizer, the high-voltage electrode plate 2, the first ground electrode plate 3 and the second ground electrode plate 15 are square or circular.

In order to further understand the present invention, the plasma air sterilizer includes a sterilization and sterilization cavity, which is provided with a control panel, and the panel is provided with functional units such as air volume, discharge intensity, and the number of working units. Remote control.

In one embodiment, the plasma air sterilizer is installed in a sterilization and sterilization pipeline, and the pipeline is the casing 1 .

In one embodiment, there are multi-layer plate electrodes inside the device, the number of plate electrodes can be arbitrarily increased or decreased according to the processing demand, each plate electrode is evenly provided with small holes, the diameter of the holes is adjustable from 0.2mm to 10mm, but the diameter of the holes is adjustable. The size should be smaller than the average size of the seeds. On the high voltage plate or the positive plate electrode, there are evenly arranged metal needle electrodes on one or both sides. Only the evenly distributed small holes are arranged on the ground electrode plate or the negative plate electrode. The size of the holes is as above. The needle gap arranged on the high-voltage plate electrode can be adjusted from 10mm to 50mm, the length of the needle can be adjusted from 0.5mm to 30mm, and the shape of the needle end can be adjusted from flat top to different curvature radii; the hole on the plate electrode can reduce back pressure and improve Disinfection and sterilization efficiency to achieve instantaneous treatment. One high voltage or positive electrode plate and two ground or negative plate electrodes are one unit, which is easy to maintain and replace; the plate electrodes can be adjusted to square or round according to application requirements. The driving power supply is installed inside the cavity. The power supply used can generate high-voltage pulse waveform, the size and frequency can be adjusted. The input voltage of the high-voltage module is 1-24VAC-DC switch input, which can be directly plugged into the mains socket, or a power bank can be used. , dry battery and other direct drive, the size is adjustable from 64cm ³ -1000cm ³ , easy to operate, small footprint, no safety hazards, 7 days * 24 hours of uninterrupted work, can greatly improve work efficiency. Based on the present invention, the manufacturing and use costs are greatly reduced. From the current research results, the plasma disinfection technology is fully capable of killing and preventing unknown new viruses and infectious pathogens in the next 10 years.

In one embodiment, the sterilizer integrates several sensors for remote control of air volume, discharge intensity, number of working units, etc., and is equipped with a data acquisition and analysis software system that collects space air every 30 minutes for ozone content analysis and microorganism analysis. Real-time monitoring of the quantity; when the ozone content in the space is higher than the national standard value, the number of operations or the discharge intensity will be automatically reduced, or intermittent operation may be implemented to ensure ozone safety. In one embodiment, the sterilizer is provided with an ozone concentration sensor, a microorganism detection unit, a bacteria detection unit or a virus detection unit.

In one embodiment, the sterilizer is provided with a control panel 5 comprising a liquid crystal display.

In one embodiment, the sterilizer includes a sterilization and sterilization treatment chamber, and the treatment chamber is provided with a cabinet-type and column-type housing 1, and inside there are multi-layer high-voltage electrode plates 2, a first ground electrode plate 3 and a second ground electrode Plate 15, each unit is composed of a high voltage electrode plate 2, a first ground electrode plate 3 and a second ground electrode plate 15, the ground high voltage plate electrode 2 and the first ground electrode plate 3 and the second ground electrode plate 15 are spaced apart, The distance between the high voltage plate electrode 2 and the first ground electrode plate 3 and the second ground electrode plate 15 is adjustable, and they are respectively placed on the support and fixed part 4, and both have holes evenly distributed to reduce back pressure and power consumption. , filter flying insects, etc., the diameter of the first hole 12 is adjustable between 0.2mm-10mm, the position of the high-voltage plate electrode hole is installed with needle and column electrode 13, the needle gap is adjustable from 10mm-50mm, and the length of the needle is 0.5mm-30mm. tune. Connect the high-voltage pulse power module to the high-voltage or positive plate electrode, the voltage amplitude is adjustable from 0-100kV, and the frequency is adjustable from 0.1Hz-100kHz. A high voltage is applied to drive the high-voltage electrodes, and discharge plasma is generated at the ends of the needle and column electrodes. The air to be treated enters from the air inlet, passes through the plasma sterilization and sterilization area, and is discharged from the air outlet. The air speed or air volume is controlled by an adjustable-speed silent fan. Realize the circulation of space air and implement disinfection and purification. The air passing through the plasma area can be purified in a few seconds to tens of seconds, reaching the disinfection standard. The disinfection and purification time of the entire 20-30m3 space is about 10-15 minutes.

The invention can realize no pollution, no peculiar smell, efficient disinfection and sterilization at room temperature, greatly shorten the disinfection time, low energy consumption, low cost, convenient use, environmental protection and other significant advantages.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments and application fields, and the above-mentioned specific embodiments are only illustrative and instructive, rather than restrictive . Those of ordinary skill in the art can also make many forms under the inspiration of this specification and without departing from the scope of protection of the claims of the present invention, which all belong to the protection of the present invention.

Claims (10)

1. A plasma air sterilizer, which comprises,

the air purifier comprises a shell, a water inlet, a water outlet and a water outlet, wherein the shell comprises an air inlet for introducing air to be sterilized and an air outlet for leading out sterilized air, and a cavity for sterilization is formed between the air inlet and the air outlet;

a plurality of sets of electrode units disposed in the cavity to generate plasma for sterilization, the electrode units including,

a high-voltage electrode plate connected with a high-voltage pulse power supply, a plurality of first holes are uniformly distributed on the high-voltage electrode plate, a plurality of needle electrodes are arranged in the first holes,

a first grounding electrode plate which is arranged above the upper surface of the high-voltage electrode plate and has an adjustable distance with the high-voltage electrode plate, a plurality of second holes are uniformly distributed on the first grounding electrode plate,

the second grounding electrode plate is arranged below the lower surface of the high-voltage electrode plate, the distance between the second grounding electrode plate and the high-voltage electrode plate is adjustable, and a plurality of third holes are uniformly distributed in the second grounding electrode plate;

and the air guide unit is arranged at the air inlet so as to adjust the flow rate of the introduced air to be disinfected.

2. A plasma air sterilizer of claim 1, wherein preferably, the needle electrode has a first pole facing the first ground electrode plate and a second pole facing the second ground electrode plate.

3. A plasma air sterilizer of claim 2, wherein the first pole is aligned with the second aperture and the second pole is aligned with the third aperture.

4. A plasma air sterilizer as claimed in claim 1, wherein the first aperture is aligned with the second aperture and/or the first aperture is aligned with the third aperture in the direction of air flow from the inlet to the outlet.

5. A plasma air sterilizer of claim 1, wherein the second aperture is aligned with the third aperture.

6. The plasma air sterilizer of claim 1, wherein the high voltage electrode plate, the first ground electrode plate and the second ground electrode plate are respectively attached to the inner wall of the housing via supporting fixing members.

7. The plasma air sterilizer of claim 1, wherein the plasma air sterilizer comprises a processor and a switch, the processor being connected to the high voltage pulse power supply and the air guide unit to adjust the flow rate and the plasma intensity.

8. The plasma air sterilizer of claim 1, wherein the plasma air sterilizer comprises an air volume adjusting unit for adjusting the air guide unit, a plasma intensity adjusting unit for adjusting power, an operation unit for controlling the operation of the sterilizer, and a switch.

9. A plasma air sterilizer as claimed in claim 1, wherein the second and/or third holes have a diameter of 0.2mm to 10mm, a gap between the needle electrodes is 10mm to 50mm, and the length of the needle electrodes is 0.5mm to 30 mm.

10. The plasma air sterilizer of claim 1, wherein the air guide unit comprises a fan.

Images