阅读说明：本技术 一种便携式等离子体杀菌消毒装置 (Portable plasma sterilizing and disinfecting device ) 是由 李三喜 刘文正 徐帅 于 2021-06-08 设计创作，主要内容包括：本发明实施例提供了一种便携式等离子体杀菌消毒装置,包括：盒体,连接有上盖,上盖可闭合形成封闭内腔,内腔用于放置被处理物；镜子,设置于上盖内部表面,用于反射紫外线；臭氧分解模块,设置于盒体内部,用于降低臭氧浓度；放电电极,搭载于臭氧分解模块上部,用于生成低温等离子体,等离子体扩散于整个电极表面；紫外灯,设置于盒体内部两侧且位于放电电极上方,可发射紫外线。本发明实施例提供了一种便携式等离子体杀菌消毒装置,大气压空气辉光放电的等离子体密度远高于电晕放电生成的等离子体密度,保证了杀菌装置在杀灭病毒、除臭、分解有机污染物方面的可靠性,同时,采用紫外灯联合等离子体的方式极大增加了杀菌效率。(The embodiment of the invention provides a portable plasma sterilization and disinfection device, which comprises: the box body is connected with an upper cover, the upper cover can be closed to form a closed inner cavity, and the inner cavity is used for placing an object to be processed; a mirror disposed on an inner surface of the upper cover for reflecting ultraviolet rays; the ozone decomposition module is arranged in the box body and used for reducing the concentration of ozone; the discharge electrode is carried on the upper part of the ozone decomposition module and is used for generating low-temperature plasma which is diffused on the whole electrode surface; the ultraviolet lamps are arranged on two sides in the box body and positioned above the discharge electrodes and can emit ultraviolet rays. The embodiment of the invention provides a portable plasma sterilization and disinfection device, the density of plasma generated by atmospheric pressure air glow discharge is far higher than that of plasma generated by corona discharge, the reliability of the sterilization device in the aspects of virus killing, deodorization and organic pollutant decomposition is ensured, and meanwhile, the sterilization efficiency is greatly improved by adopting a mode of combining an ultraviolet lamp with the plasma.)

1. A portable plasma sterilization and disinfection device, comprising:

the box body is connected with an upper cover, the upper cover can be closed to form a closed inner cavity, and the inner cavity is used for placing an object to be processed;

the mirror is arranged on the inner surface of the upper cover and used for reflecting ultraviolet rays;

the ozone decomposition module is arranged in the box body and used for reducing the concentration of ozone;

the discharge electrode is carried on the upper part of the ozone decomposition module and is used for generating low-temperature plasma which is diffused on the whole electrode surface;

the ultraviolet lamps are arranged on two sides in the box body and above the discharge electrodes and can emit ultraviolet rays.

2. The apparatus of claim 1, wherein the ozonolysis module carries an ozonolysis catalyst for honeycomb-shaped porous activated carbon.

3. The apparatus of claim 1, wherein the plurality of discharge electrodes are parallel to and spaced apart from each other.

4. The apparatus of claim 1, further comprising a power supply system of the high voltage output circuit, the power supply system being connected to the discharge electrode.

5. The apparatus of claim 4, wherein the discharge electrode comprises: a high voltage electrode, an insulating medium and a grounding electrode;

the high-voltage electrode is wrapped with an insulating medium, and the grounding electrode is spirally wound on the surface of the insulating medium;

the high-voltage electrode is connected with the high-voltage end of the power supply system through a lead, and the grounding electrode is connected with the grounding end through a lead.

6. The apparatus of claim 5, wherein the high voltage electrode is a rigid body structure and the ground electrode is a flexible body structure.

7. The device of claim 5, wherein the high voltage electrode is made of copper, the ground electrode is made of carbon fiber, and the insulating medium is polytetrafluoroethylene.

8. The device of claim 1, wherein the box is connected to the lid by a hinge.

Technical Field

The invention relates to the technical field of gas discharge plasma generation, in particular to a portable plasma sterilization and disinfection device.

Background

The reduced efficacy of traditional antibiotics and disinfectants poses a significant threat to public health, making the demand of people for the medical and health field stronger.

With the rapid development of the plasma technology, the plasma technology is more and more widely applied, and is used as a novel efficient purification and disinfection means in the aspects of air purification, medical disinfection and the like.

The principle of plasma sterilization is that a large amount of active ingredients contained in plasma, such as charged particles, ultraviolet rays, particles in an excited state and a metastable state, chemically active particles (including Reactive Oxygen Species (ROS) and Reactive Nitrogen Species (RNS)), and the like react with components of cell membranes, proteins, DNA, and the like of bacteria, thereby destroying the structures of the bacteria and inactivating the bacteria. The existing sterilization technology such as ultraviolet ray is harmful to human bodies, and the killed bacteria have the phenomenon of light revival, low efficiency and poor sterilization effect; the plasma generated by corona discharge has the defects of high discharge voltage (tens of thousands of volts), low plasma generation density and poor treatment efficiency and effect; the arc discharge plasma has limited its application range due to its characteristics of high temperature, high energy consumption, etc.

Disclosure of Invention

The embodiment of the invention provides a portable plasma sterilization and disinfection device, aiming at designing a portable device which has low power consumption and low ozone type, is high in sterilization, purification and deodorization efficiency, and can reduce the ozone emission.

In order to achieve the purpose, the invention adopts the following technical scheme.

A portable plasma sterilization and disinfection device comprising:

the box body is connected with an upper cover, the upper cover can be closed to form a closed inner cavity, and the inner cavity is used for placing an object to be processed;

the mirror is arranged on the inner surface of the upper cover and used for reflecting ultraviolet rays;

the ozone decomposition module is arranged in the box body and used for reducing the concentration of ozone;

the discharge electrode is carried on the upper part of the ozone decomposition module and is used for generating low-temperature plasma which is diffused on the whole electrode surface;

the ultraviolet lamps are arranged on two sides in the box body and above the discharge electrodes and can emit ultraviolet rays.

Preferably, the ozone decomposition module is a honeycomb porous activated carbon loaded ozone decomposition catalyst.

Preferably, the discharge electrodes are provided in plurality, and the discharge electrodes are parallel to each other and spaced apart from each other by a predetermined distance.

Preferably, the device further comprises a power supply system of the high-voltage output circuit, and the power supply system is connected with the discharge electrode.

Preferably, the discharge electrode includes: a high voltage electrode, an insulating medium and a grounding electrode;

the high-voltage electrode is wrapped with an insulating medium, and the grounding electrode is spirally wound on the surface of the insulating medium;

the high-voltage electrode is connected with the high-voltage end of the power supply system through a lead, and the grounding electrode is connected with the grounding end through a lead.

Preferably, the high voltage electrode is a rigid body structure, and the ground electrode is a flexible body structure.

Preferably, the high-voltage electrode is made of a copper material, the grounding electrode is made of a carbon fiber material, and the insulating medium is polytetrafluoroethylene.

Preferably, the box body is connected with the upper cover through a hinge.

According to the technical scheme provided by the embodiment of the invention, the embodiment of the invention provides a portable plasma sterilization and disinfection device, and compared with the prior art, the portable plasma sterilization and disinfection device has the following beneficial effects:

(1) the plasma density of atmospheric pressure air glow discharge is far higher than that generated by corona discharge, so that the reliability of the sterilizing device in the aspects of killing viruses, deodorizing and decomposing organic pollutants can be ensured, and the range and the efficiency of killing the viruses are greatly improved.

(2) Conventionally, discharge electrodes are spaced apart at a certain distance between high and low voltage electrodes, and discharge is generated between the electrode gaps. The invention adopts the asymmetric electrode structure to form special electric field distribution, effectively limits the development of electron collapse in the alpha process by forming a curved power line and a gradient-changing non-uniform electric field in an open discharge space, and creates conditions for the formation of glow discharge in the air. Through the design of the contact electrode structure, a space electric field with strength change is constructed, and the pre-discharge is utilized to provide seed electrons for the space of the weak electric field, so that the diffused glow discharge in atmospheric air is realized. Meanwhile, the property that materials such as carbon fiber can inhibit secondary electron emission is utilized to form unilateral dielectric barrier discharge, and the characteristic that field emission under micro discharge enables discharge to be easily realized is utilized, and the electrode with micro discharge characteristic is adopted to play a role in reducing discharge voltage.

(3) The design of the contact electrode structure greatly increases the action area and has higher space utilization rate of killing viruses; the generated plasma has good low-temperature characteristic and strong diffusion capacity, so that the contact area of the treated object and the plasma generated by discharge is effectively increased, and the virus killing efficiency can be well improved. The contact electrode structure can effectively reduce the initial discharge voltage, and also reduces the requirement on insulation.

(4) The mode of combining the ultraviolet lamp with the plasma greatly increases the sterilization efficiency. The ultraviolet lamp can rapidly destroy DNA in bacteria, and the plasma can rapidly destroy structures such as bacterial cell membranes, proteins and the like, so that irreversible damage is caused to the bacteria, and the bacteria are completely inactivated.

(5) The use of the ozone decomposition catalyst can reduce the concentration of ozone generated by the discharge electrode as a plasma derivative. The mirror is additionally arranged on the inner surface of the upper cover, so that ultraviolet rays can be reflected, the whole space in the box can be filled with the ultraviolet rays, and the sterilization efficiency is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a portable plasma sterilization and disinfection device according to an embodiment of the present invention;

FIG. 2 is a schematic top view of a portable plasma sterilizer according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a portable plasma sterilizer according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a contact discharge electrode according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

For the convenience of understanding the embodiments of the present invention, the following description will be further explained by taking several specific embodiments as examples in conjunction with the drawings, and the embodiments are not to be construed as limiting the embodiments of the present invention.

The embodiment of the invention provides a portable plasma sterilization and disinfection device, as shown in figures 1-3, comprising: upper cover 1, mirror 2, box body 3, ozonolysis module 4, discharge electrode 5, ultraviolet lamp 6 and the electrical power generating system who has high voltage output circuit, wherein, electrical power generating system is connected with discharge electrode 5.

The mirror 2 is installed on the inner surface of the upper cover 1, the upper cover 1 is connected with the box body 3 through a hinge, the upper cover 1 and the box body 3 can be closed to form a closed inner cavity, an object to be processed can also be opened to be placed in or taken out, and the inner cavity can be used for storing the object to be processed which needs to be sterilized. The inside undermost layer of box body 3 is installed ozone decomposition module 4, and 4 upper portions of ozone decomposition module are discharged and are had one deck discharge electrode 5, and each discharge electrode interval 5mm parallel placement installs ultraviolet lamp 6 in 5 inside both sides of upper portion box body of discharge electrode 3.

As shown in fig. 4, the discharge electrode 5 includes a high voltage electrode 7, an insulating medium 8 and a ground electrode 9, the high voltage electrode 7 is a rigid structure, the ground electrode 9 is a flexible structure, the insulating medium 8 is wrapped outside the high voltage electrode 7, and the ground electrode 9 is spirally wound on the surface of the insulating medium 8. The high-voltage electrode 7 is connected with the high-voltage end of a high-frequency high-voltage alternating current power supply through a lead, and the grounding electrode 9 is connected with the grounding end through a lead. After the power supply system is switched on, glow discharge occurs on the surfaces of the junctions of all the high-voltage electrodes and the grounding electrodes and the areas nearby the junctions, and a large amount of low-temperature plasma and active particles are generated and diffused on the whole electrode surface. Under the action of the plasma and the active particles, toxic substances such as bacteria, viruses and the like attached to the surfaces of the treated objects such as masks, gloves and the like can be effectively killed.

In the embodiment of the invention, a high-frequency high-voltage power supply with the frequency of 6kHz and the maximum output voltage of 3kV is adopted.

The high-voltage electrode is made of copper material.

The insulating medium adopts polytetrafluoroethylene, and the grounding electrode adopts carbon fiber.

The glow discharge plasma has the advantages of good uniformity, high efficiency, low energy consumption and the like, and can effectively realize deep treatment. The contact electrode structure and the carbon fiber electrode material adopted by the discharge electrode can effectively enhance the uniformity of discharge, reduce the initial discharge voltage and reduce the content of additionally generated ozone.

The ultraviolet lamp 6 is connected with a 220V alternating current power supply through a lead, can generate ultraviolet rays with a wavelength of 254nm, can diffuse the ultraviolet rays in the space of the whole box body 3 through the reflection of the mirror 2 on the surface of the upper cover 1, effectively kills germs attached to the surface of a treated object, thoroughly kills the bacteria through matching with plasma, and avoids the phenomenon of light revival of the bacteria.

The ozone decomposition module 4 carries an ozone decomposition catalyst for honeycomb porous activated carbon. Ozone decomposition module 4 installs in 3 bottoms of box body and contacts with discharge electrode 5, because of ozone density is greater than air density and with discharge electrode direct contact, can effectively reduce the ozone concentration that produces among the discharge process, avoids producing harm to the human body.

Those of ordinary skill in the art will understand that: the figures are merely schematic representations of one embodiment, and the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.