A plasma air purification device

Abstract

The present invention discloses a plasma air purification device, which includes a first body, a second body, a plasma generator, a driving component and a filter assembly, wherein the first body is a hollow cylindrical structure, and its outer side wall is provided with a first air inlet and a first air outlet, the second body is a hollow cylindrical structure, the second body is located inside the first body, the second body and the first body can produce relative rotation, the second body side wall is provided with a second air inlet and a second air outlet, and the driving component is used to drive the first body and the second body to produce relative rotation. The purpose of the present invention is to solve the technical problems that the external air stays for a short time in the existing purification equipment, the reaction is not sufficient, the purification effect is poor, and more positive and negative ions are discharged from the air outlet and combined with pollutants to settle on the food processing device or the food surface, thereby deepening the food pollution.

Description

Technical Field

[0001] The invention belongs to the technical field of air purification, and in particular relates to plasma air purification equipment. Background Art

[0002] In the field of food processing, plasma air purifier is an efficient and environmentally friendly air purification device. Its design and operation mechanism are aimed at removing pollutants from the air and ensuring the cleanliness and safety of the food processing environment. Existing plasma air purification equipment introduces air into it through a fan. Some substances in the air are ionized into positive and negative ions under the action of the high-voltage electric field. The positive and negative ions interact with pollutants in the air and combine with dust particles with opposite charges to form larger particles. These large particles are captured and collected by the filter, and the purified air is discharged to the outside. However, in the field of food processing, due to the high requirements for air cleanliness in food processing workshops, existing plasma air purification devices still have the following shortcomings:

[0003] ①. The outside air enters the equipment through the air inlet and is discharged from the air outlet after being purified. The air stays in the device for a short time, and the reaction with the pollutants is not sufficient, resulting in poor purification effect.

[0004] ② Since the air stays in the device for a short time and does not react fully with the pollutants, more positive and negative ions in the device will be discharged from the outlet. The discharged positive and negative ions will combine with the pollutants in the air and settle under the action of gravity, and then fall on the food processing equipment or the food surface, increasing the contamination of the food. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a plasma air purification device to solve the technical problems of short residence time of external air in the existing purification equipment, insufficient reaction, poor purification effect, and more positive and negative ions being discharged from the air outlet and combining with pollutants to settle on the food processing equipment or food surface, thereby aggravating food contamination.

[0006] To achieve the above-mentioned invention object, the technical solution adopted by the present invention includes: a first body, the first body is a hollow cylindrical structure, and the outer side wall of the first body is provided with a first air inlet and a first air outlet communicated with the interior of the first body;

[0007] The second body is a hollow cylindrical structure, the second body is located inside the first body, the second body and the first body can generate relative rotation, the second body side wall is provided with a second air inlet and a second air outlet communicated with the second body, when the first air inlet coincides with the second air inlet, the first air outlet coincides with the second air outlet, the purification device is in a first use state, in the first use state, the external air flow can enter the interior of the second body through the first air inlet and the second air inlet, and after being processed inside, it is discharged outward through the second air outlet and the first air outlet, when the first air inlet is staggered with the second air inlet, the first air outlet is staggered with the second air outlet, the purification device is in a second use state, in the second use state, the interior of the second body is in a closed state;

[0008] A plasma generator, which is disposed inside the second body and is used to ionize at least part of the substances in the airflow to generate positive and negative ions;

[0009] A driving component, the driving component is at least used to drive the first body and the second body to generate relative rotation so that the purification device can be switched between a first use state and a second use state;

[0010] A filter assembly is installed outside the first body and is at least used to filter the gas discharged from the first gas outlet.

[0011] Furthermore, a plate-shaped mounting bracket is provided at the end of the first body, the driving component is mounted on the mounting bracket, the driving end of the driving component extends into the interior of the first body and is transmission-connected to the second body, and the driving component is used to drive the second body to rotate.

[0012] Furthermore, a reduction assembly is provided at one end of the first body close to the mounting bracket, and the driving end of the driving component is transmission-connected to the second body via the reduction assembly.

[0013] Furthermore, a fan blade assembly is provided inside the second body between the second air inlet and the second air outlet, the driving end of the driving component extends into the second body and is fixedly connected to the axis of the fan blade assembly, and the driving component drives the fan blade assembly to rotate via the driving end.

[0014] In the present invention, the fan blade assembly is driven to rotate by the driving assembly, so that the purification device can complete the gas circulation between the second body and the outside world in the first use state, and the centrifugal force generated during the gas delivery process can also stir the gas to make it mixed more evenly. In addition, in the second use state of the purification device, the centrifugal force generated by the rotation of the fan blade assembly also has the effect of accelerating the gas mixing, and in the second use state, since the interior of the second body is in a closed state, the gas mixing effect generated by the rotation of the fan blades is better than that in the first use state, thereby further improving the purification effect.

[0015] Furthermore, an air guide plate is rotatably provided inside the second air outlet, and the outer side of the air guide plate is a toggle end. An elastic member for elastically resetting the air guide plate is provided on the air guide plate, and the second body is driven to rotate by a driving component, and the toggle end is squeezed by the first body to rotate so that the angle between the air guide plate and the second body changes; in the first usage state, the elastic member is in a natural state, and the toggle end of the air guide plate is located in the first air outlet, and the inner side of the air guide plate is inclined in a direction opposite to the rotation direction of the fan blade assembly, and in the second usage state, the toggle end of the air guide plate abuts against the inner side wall of the first body, and the inner side of the air guide plate is inclined in a direction same as the rotation direction of the fan blade assembly.

[0016] In the present invention, in the first use state, the airflow generated by the fan blade assembly will be blocked by the air guide plate during the rotation process. The blocking here does not completely block the airflow, but the airflow is guided in an orderly manner by the air guide surface of the air guide plate, so that it can flow along the air guide surface of the air guide plate in the direction of the first air outlet, thereby enhancing the gas delivery effect; in the second use state, the air guide plate guides the airflow to be transported to the inside of the second body, reducing the flow of gas to the gap between the first body and the second body, reducing the possibility of gas overflowing outward, and at the same time, the airflow direction is changed by the air guide surface of the air guide plate, so that it intersects with the airflow delivery direction of the fan assembly, further improving the mixing effect of the airflow. In addition, the second body is driven to rotate by the driving assembly, so that the toggle end of the air guide plate is squeezed by the inner wall of the first body to achieve the change of the angle of the air guide plate, and the first body and the air guide plate are linked together, the design is more ingenious, and the operation is more convenient.

[0017] Furthermore, an ion neutralization plate is provided at one end of the air guide plate away from the second body, and in the first use state, the ion neutralization plate is located on the outer side of the air guide plate.

[0018] Furthermore, two sealing rings are embedded in the outer side wall of the second body and surround the outer side of the second air outlet and the outer side of the second air inlet respectively. The sealing ring abuts against the inner side wall of the first body at a side away from the second body.

[0019] In the present invention, a closed space is formed between the sealing ring and the inner wall of the first body, which effectively prevents the gas from flowing through the space to the narrow gap between the first body and the second body, thereby reducing the overflow of the gas and improving the effectiveness of the internal gas mixing. In addition, the particles overflowing from the second gas outlet will also be confined in this closed space, so that when the first gas outlet and the second gas outlet overlap, the particles can be discharged from the first gas outlet. In addition, as the second body rotates, the sealing ring also plays a cleaning role and can scrape off the particles adhering to the inner wall of the first body.

[0020] Compared with the prior art, the advantages of the present invention include:

[0021] (1) The plasma air purification device provided by the present invention has a simple design and a small number of parts, thereby achieving a simple structure and convenient installation, which is conducive to reducing production costs;

[0022] (2) The plasma air purification device provided by the present invention drives the first body and the second body to rotate relative to each other through a driving component, so that the purification device can switch between a first use state and a second use state. In the first use state, the gas inside the second body and the external gas circulation can be realized. In the first use state, the gas can stay inside the second body for a period of time, thereby providing more sufficient reaction time for positive and negative ions and microorganisms and bacteria in the airflow, thereby enhancing the purification effect;

[0023] (3) The plasma air purification device provided by the present invention has a longer reaction time of the gas in the second body, which makes the reaction more complete, and the consumption of positive and negative ions in the device increases accordingly, so the number of positive and negative ions discharged through the gas outlet decreases, and the particles formed by them combining with pollutants in the air flow also decreases. In this way, the number of particles falling on the food processing device or the surface of the food is reduced, thereby effectively reducing the pollution of the food. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0026] Figure 2 for Figure 1 A schematic cross-sectional view of the structure in a first use state;

[0027] Figure 3 for Figure 1 A schematic cross-sectional view of the structure in a second use state;

[0028] Figure 4 A front view of an embodiment of the present invention;

[0029] Figure 5 for Figure 4 A cross-sectional view in a first use state;

[0030] Figure 6 for Figure 4 Sectional view in the second use state Figure 2 ;

[0031] Figure 7 Schematic diagram of the structure of the second body in an embodiment of the present invention.

[0032] Figure numerals: first body 1, second body 2, plasma generator 3, driving component 4, filter assembly 5, first air inlet 6, first air outlet 7, second air inlet 8, second air outlet 9, mounting bracket 10, first gear 11, second gear 12, gear ring 13, fan blade assembly 14, air guide plate 15, torsion spring 16, air guide surface 17, sealing ring 18, limit column 19. DETAILED DESCRIPTION

[0033] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the present invention after long-term research and extensive practice. The following will further explain the technical solution, its implementation process and principle, etc. in conjunction with the drawings in the embodiments of this application and specific implementation cases.

[0034] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, the present invention covers any substitution, modification, equivalent method and scheme made on the spirit, principle and scope of the present invention defined by the claims. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present application, "first", "second", "third" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "an" and other similar words do not indicate a quantity limitation, but indicate the existence of at least one. "Include" or "comprise" and other similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0036] In the description of the present application, the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, when positional terms such as both sides, outside, up and down are used, it should be understood that they are only used to facilitate understanding and description, considering that the structure may be facing other positions.

[0037] In the description of this application, unless otherwise clearly specified and limited, the technical or scientific terms used should have the usual meanings understood by persons with general skills in the field to which this application belongs. Terms such as "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a conflicting connection, or an integrated connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] See also Figure 1-4 The present invention provides a technical solution: a plasma air purification device, comprising: a first body 1, a second body 2, a plasma generator 3, a driving component 4 and a filter assembly 5. The first body 1 is a hollow cylindrical structure, that is, a receiving space for receiving the second body 2 is formed inside the first body 1, and a first air inlet 6 and a first air outlet 7 communicating with the inside of the first body 1 are formed on the outer wall of the first body 1.

[0039] The second body 2 is a hollow cylindrical structure, and the second body 2 is located inside the first body 1. The second body 2 and the first body 1 can produce relative rotation. The side wall of the second body 2 is provided with a second air inlet 8 and a second air outlet 9 which are communicated with the second body 2. During the relative rotation between the first body 1 and the second body 2, the first air inlet 6 can overlap with the second air inlet 8, and when the first air inlet 6 overlaps with the second air inlet 8, the first air outlet 7 also overlaps with the second air outlet 9. In other words, when the first air inlet 6 and the second air inlet 8 and the first air outlet 7 and the second air outlet 9 are opened, the first air inlet 6 and the second air inlet 8 are in the same position, and the first air outlet 7 and the second air outlet 9 are in the same position.

[0040] See also Figure 2 When the first air inlet 6 coincides with the second air inlet 8, the first air outlet 7 coincides with the second air outlet 9, and the purification device is in the first use state. In the first use state, the external air flow can enter the interior of the second body 2 through the first air inlet 6 and the second air inlet 8, and after internal treatment (i.e., plasma disinfection and sterilization treatment), it is discharged outward through the second air outlet 9 and the first air outlet 7.

[0041] See also Figure 3 , when the first air inlet 6 is staggered with the second air inlet 8, the first air outlet 7 is staggered with the second air outlet 9, and the purification device is in the second use state. In the second use state, the interior of the second body 2 is in a closed state, and external gas cannot enter the interior of the second body 2. However, the gas inside the second body 2 can stay for a period of time, which provides more sufficient reaction time for positive and negative ions and microorganisms and germs in the airflow, thereby enhancing the purification effect. At the same time, due to the more sufficient reaction, the consumption of positive and negative ions in the device also increases accordingly, so the number of positive and negative ions discharged through the air outlet is reduced, and the particulate matter formed by them combining with pollutants in the airflow is also reduced. In this way, the number of particulate matter falling on the food processing device or the surface of the food is reduced, thereby effectively reducing the pollution of the food.

[0042] It should be noted that the gas can be transported with the aid of an external gas transport device, such as a compressor, a blower, and an air pump.

[0043] See also Figure 2 Or 3, the plasma generator 3 is arranged inside the second body 2 to ionize at least part of the substances in the airflow to generate positive and negative ions. The generated positive and negative ions fuse with the microorganisms, bacteria, etc. in the airflow input into the second body 2 from the outside to form small particles and settle.

[0044] The driving component 4 is at least used to drive the first body 1 and the second body 2 to produce relative rotation so that the purification device can switch between the first use state and the second use state. Specifically, when the first body 1 remains fixed, the driving component 4 can drive the second body 2 to rotate; conversely, when the second body 2 is fixed, the driving component 4 drives the first body 1 to rotate. In addition, the driving component 4 also has the ability to drive the first body 1 and the second body 2 to rotate at the same time. In this case, if the rotation directions of the two are the same, their rotation speeds must be different; if the rotation directions are opposite, the rotation speeds are not subject to specific restrictions. In summary, these four driving methods can effectively achieve relative rotation between the first body 1 and the second body 2.

[0045] As the first body 1 and the second body 2 rotate relative to each other, the purification device will form a continuous circulation process between the first use state and the second use state, that is, the gas enters and exits the second body 2 to realize the circulation between the gas flow and the short mixing reaction of the gas inside the second body. It should be noted that during the process of the gas entering and exiting the second body 2, the plasma generator 3 still plays a role and the gas can still be purified, but the reaction time is short, which affects the purification effect.

[0046] Of course, the use of the plasma generator 3 can also be optimized by integrating the gas sensor and the controller. Specifically, the gas sensor is responsible for monitoring the gas flow inside the second body 2, that is, determining whether there is gas input or output. When the gas sensor detects that there is gas flow inside the second body 2, it sends a signal to the controller. After receiving this signal, the controller immediately turns off the plasma generator 3. On the contrary, when the gas sensor confirms that there is no gas flow inside the second body 2, it sends a signal to the controller again, and the controller starts the plasma generator 3 to perform airflow purification. Through such a setting, we can effectively reduce the operating time of the plasma generator 3, thereby achieving the purpose of saving energy.

[0047] See also Figure 1 , 2 Or 3, the filter assembly 5 is installed outside the first body 1, and the filter assembly 5 is at least used to filter the gas discharged from the first gas outlet 7.

[0048] Specifically, the filter assembly 5 includes a cylindrical shell with an open end, and a plurality of through holes are distributed on the outer side wall of the cylindrical shell, and these through holes are connected to the inner space of the cylindrical shell. The cylindrical shell is designed to be sleeved on the outside of the first body 1 and is firmly fixed by screws. On the inner side wall of the cylindrical shell, a layer of dustproof gauze is fixed by bonding. The main function of this layer of dustproof gauze is to absorb and collect dust and small particles discharged from the first air outlet 7 after the purification process is completed, and to prevent external dust and impurities from entering the second body 2 through the first air inlet 6 and to absorb and collect dust and impurities. Of course, in addition to this, other filtering structures well known to those skilled in the art are also possible and should be within the scope of protection.

[0049] See also Figure 1 , 2 Or 3, in this embodiment: a plate-shaped mounting bracket 10 is provided at the end of the first body 1, and the mounting bracket 10 is used to mount the first body 1 as the mounting base of the first body 1, and the driving component 4 is mounted on the mounting bracket 10, and the driving end of the driving component 4 extends into the interior of the first body 1 and is in transmission connection with the second body 2, and the driving component 4 is used to drive the second body 2 to rotate. By fixing the first body 1 on the mounting bracket 10, the first body 1 does not rotate, so that the first body 1 is not easily affected by external factors, and because the second body 2 is located inside the first body 1, the first body 1 can better protect the second body 2, and the second body 2 is driven to rotate by the driving component 4 to realize the relative rotation of the first body 1 and the second body 2. The isolation of the first body 1 makes the rotation of the second body 2 not easily affected by external factors, and can operate more stably.

[0050] It should be noted that the driving component 4 can be a mechanical component capable of providing rotation, such as an electric motor, a motor, and a rotary cylinder.

[0051] See also Figure 2 Or 3, in this embodiment: a reduction assembly is provided at one end of the first body 1 close to the mounting bracket 10, and the driving end of the driving component 4 is connected to the second body 2 through the reduction assembly. By providing the reduction assembly, the rotation speed of the second body 2 can be changed, so that the rotation speed of the second body 2 is slowed down, and then the airflow stays in the second body 2 for a longer time, and the mixing effect is better.

[0052] Specifically, the reduction assembly is a planetary gear reduction assembly, which includes a first gear 11, a second gear 12 and a gear ring 13. The first gear 11 is located in the internal space of the first body 1 near one end of the mounting bracket 10, and is installed on the driving end of the driving component 4 and is coaxially arranged with the driving end of the driving component 4. The driving component 4 drives the first gear 11 to rotate through the driving end, and the second gear 12 is fixedly mounted on the inner wall of the first body 1 near one end of the mounting bracket 10. The second gear 12 is meshed with the first gear 11. The outer edge of the end of the first body 1 near the mounting bracket 10 extends toward the mounting bracket 10 to form an annular mounting portion. The gear ring 13 is fixedly mounted on the inner wall of the annular mounting portion and is coaxially arranged with the annular mounting portion. The gear ring 13 is located outside the second gear 12 and the first gear 11, and is meshed with the second gear 12. The driving end of the driving component 4 drives the first gear 11 to rotate, the first gear 11 drives the second gear 12 to rotate, the second gear 12 drives the gear ring 13 to rotate, and the gear ring 13 drives the second body 2 to rotate.

[0053] See also Figure 2 Or 3, in this embodiment: a fan blade assembly 14 is provided inside the second body 2 and is located between the second air inlet 8 and the second air outlet 9, the driving end of the driving component 4 extends into the second body 2 and is fixedly connected to the axis of the fan blade assembly 14, and the driving component 4 drives the fan blade assembly 14 to rotate through the driving end.

[0054] Specifically, the fan blade assembly 14 is composed of fan blades and a cylindrical connection base. The fan blades are evenly distributed on the side wall of the connection base in a circumferential array and are fixedly connected to the connection base by welding. The driving end of the driving component 4 extends into the second body 2 and is tightly connected to the axis of the connection base by bolts, thereby driving the connection base to rotate and then driving the fan blades to rotate. The rotation of the fan blades provides power for the delivery of gas.

[0055] In detail, in the first use state of the purification device, the rotation of the fan blades will create a negative pressure environment on the side of the second body 2 close to the second air inlet 8, and this negative pressure environment will cause the external airflow to be sucked into the second body 2 through the first air inlet 6 and the second air inlet 8. At the same time, the rotation of the fan blades will also push the gas to move toward the second air outlet 9, so that the gas inside the second body 2 is discharged to the outside through the second air outlet 9 and the first air outlet 7, thereby forming a circulating flow of gas between the second body 2 and the outside world.

[0056] In addition, the rotation of the fan blades can also stir the gas inside the second body 2, and this stirring can accelerate the mixing process of positive and negative ions with bacteria and microorganisms, thereby effectively improving the purification effect. In the second use state of the purification device, since the second body 2 is in a closed state, the gas mixing effect generated by the rotation of the fan blades is better than that in the first use state.

[0057] In addition, it should be noted that, through the above-mentioned speed reduction assembly, there is a difference in the rotation speed between the fan assembly and the second body 2, so that the fan assembly can achieve the gas delivery and stirring functions.

[0058] See also Figure 2 Or 3, in this embodiment: a rotatable air guide plate 15 is arranged inside the second air outlet 9, the air guide plate 15 extends along the length direction of the second air outlet 9, and is rotatably connected inside the second air outlet 9 via a rotating shaft. A toggle end is arranged on the outer side of the air guide plate 15, and when the first body 1 and the second body 2 rotate relative to each other, the first body 1 can contact and push the toggle end, so that the air guide plate 15 rotates around the rotating shaft, thereby changing its angle.

[0059] In order to ensure that the air deflector 15 can be elastically reset, an elastic member is installed on the air deflector 15, and the elastic member is specifically a torsion spring 16 sleeved around the rotating shaft. The first torsion arm of the torsion spring 16 is fixedly connected to the air deflector 15, and a limiting column 19 is provided inside the second air outlet 9, and the second torsion arm of the torsion spring 16 is in contact with the limiting column 19. When an external force drives the air deflector 15 to rotate, the second torsion arm of the torsion spring 16 will rotate accordingly, and under the restriction of the limiting column 19, it will gradually wrap around the rotating shaft, and the torsion spring 16 will be elastically stressed. Once the external force is removed, the air deflector 15 will automatically reset under the elastic force of the torsion spring 16. Of course, in addition to the torsion spring 16, other elastic reset structures known to those skilled in the art are also possible.

[0060] See also Figure 2 and 5 In the first use state, the elastic member is in a natural, stress-free state, and the toggle end of the air guide plate 15 is located inside the first air outlet 7, avoiding the influence of the first body 1 and causing it to rotate. At this time, the inner side of the air guide plate 15 is tilted in the direction opposite to the rotation direction of the fan blade assembly 14, and the airflow generated by the fan blade assembly 14 will be blocked by the air guide plate 15 during the rotation process. The blocking here does not completely block the airflow, but guides the airflow in an orderly manner through the air guide surface 17, so that it can flow along the air guide surface 17 toward the first air outlet 7, thereby enhancing the gas delivery effect.

[0061] See also Figure 3 and 6In the second use state, the toggle end of the air guide plate 15 is close to the inner wall of the first body 1, and slides along the inner wall of the first body 1 during the rotation process. In order to reduce the resistance during sliding, the side of the air guide plate 15 close to the first body 1 is designed as a curved surface or a convex point is set. At this time, the inner side of the air guide plate 15 is inclined in the same direction as the rotation direction of the fan blade assembly 14, that is, the inclination direction of the air guide plate 15 in the two use states is opposite. In the first use state, the air guide plate 15 is set in a way of wedging against the wind to guide the airflow to the first air outlet 7; while in the second use state, it is set in the wind to guide the airflow to the inside of the second body 2, reducing the flow of gas to the gap between the first body 1 and the second body 2, and reducing the possibility of gas overflowing outward. At the same time, the airflow direction is changed by the air guide surface 17 so that it intersects with the airflow delivery direction of the fan assembly, further improving the mixing effect of the airflow.

[0062] In this embodiment: an ion neutralization plate is arranged at one end of the air guide plate 15 away from the second body 2. The ion neutralization plate is made of mixed ion exchange resin and has the function of absorbing excess positive and negative ions discharged from the second body 2. In the first use state, the ion neutralization plate is located on the outer side of the air guide plate 15, that is, the ion neutralization plate is arranged on the side of the air guide surface 17 away from the second body 2. In the first use state, when the airflow passes through the air guide surface 17, it will continue to flow and contact the ion neutralization plate. At this time, the ion neutralization plate will play its adsorption role and effectively absorb the excess positive and negative ions in the airflow.

[0063] Due to the effect of the ion neutralization plate, the number of positive and negative ions discharged through the first air outlet 7 is further reduced. The number of particles formed by the combination of these reduced positive and negative ions and pollutants in the airflow is also reduced. Therefore, when these airflows finally fall on the food processing device or the food surface, the number of particles carried is greatly reduced, thereby further reducing the risk of food contamination.

[0064] See also Figure 5-7 In this embodiment: when the purification device is in the second state, in order to reduce the leakage of gas from the gap between the first body 1 and the second body 2, two sealing rings 18 are embedded in the outer wall of the second body 2, which surround the outer side of the second gas outlet 9 and the outer side of the second gas inlet 8 respectively. The sealing ring 18 is abutted against the inner wall of the first body 1 on the side away from the second body 2. A closed space is formed between the sealing ring 18 and the inner wall of the first body 1, which effectively prevents the gas from flowing through this space to the narrow gap between the first body 1 and the second body 2, thereby reducing the overflow of gas and improving the effectiveness of internal gas mixing.

[0065] In addition, as the second body 2 rotates, the sealing ring 18 also plays a cleaning role, and can scrape off the particles adhering to the inner wall of the first body 1. When the purification device is switched to the first use state, these particles will be sent to the filter assembly 5 along with the gas flow and captured by the filter assembly 5, thereby avoiding the accumulation of particles on the sealing ring 18 and extending the service life of the sealing ring 18.

[0066] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, some simple deductions or substitutions can be made without departing from the concept of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A plasma air purification device, characterized in that: include: A first body, wherein the first body is a hollow cylindrical structure, and an outer wall of the first body is provided with a first air inlet and a first air outlet communicated with the interior of the first body; The second body is a hollow cylindrical structure, the second body is located inside the first body, the second body and the first body can generate relative rotation, the second body side wall is provided with a second air inlet and a second air outlet communicated with the second body, when the first air inlet coincides with the second air inlet, the first air outlet coincides with the second air outlet, the purification device is in a first use state, in the first use state, the external air flow can enter the interior of the second body through the first air inlet and the second air inlet, and after being processed inside, it is discharged outward through the second air outlet and the first air outlet, when the first air inlet is staggered with the second air inlet, the first air outlet is staggered with the second air outlet, the purification device is in a second use state, in the second use state, the interior of the second body is in a closed state; A plasma generator, which is disposed inside the second body and is used to ionize at least part of the substances in the airflow to generate positive and negative ions; A driving component, the driving component is at least used to drive the first body and the second body to generate relative rotation so that the purification device can be switched between the first use state and the second use state; A filter assembly, the filter assembly is mounted outside the first body, and the filter assembly is at least used to filter the gas discharged from the first gas outlet; A plate-shaped mounting bracket is provided at the end of the first body, the driving component is mounted on the mounting bracket, the driving end of the driving component extends into the interior of the first body and is transmission-connected to the second body, and the driving component is used to drive the second body to rotate; A reduction assembly is provided at one end of the first body close to the mounting bracket, and the driving end of the driving component is transmission-connected to the second body through the reduction assembly; The second body is provided with a fan blade assembly between the second air inlet and the second air outlet, the driving end of the driving component extends into the second body and is fixedly connected to the axis of the fan blade assembly, and the driving component drives the fan blade assembly to rotate through the driving end; An air guide plate is rotatably provided inside the second air outlet, an outer side of the air guide plate is a toggle end, an elastic member for elastically resetting the air guide plate is provided on the air guide plate, the second body is driven to rotate by a driving component, the toggle end is squeezed by the first body and rotates so that the angle between the air guide plate and the second body changes; in the first use state, the elastic member is in a natural state, and the toggle end of the air guide plate is located in the first air outlet, the inner side of the air guide plate is inclined in a direction opposite to the rotation direction of the fan blade assembly, and in the second use state, the toggle end of the air guide plate abuts against the inner side wall of the first body, and the inner side of the air guide plate is inclined in a direction same as the rotation direction of the fan blade assembly; An ion neutralization plate is disposed at one end of the air guide plate away from the second body. In the first use state, the ion neutralization plate is located on the outer side of the air guide plate.

2. The plasma air purification device according to claim 1, characterized in that: Two sealing rings are embedded in the outer side wall of the second body and surround the outer side of the second air outlet and the outer side of the second air inlet respectively. The sealing ring abuts against the inner side wall of the first body at a side away from the second body.

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