Plasma air purifier

Abstract

The utility model relates to the field of air purification, and discloses a plasma air purifier which comprises a shell, a plasma generating device, a fan and an outer filtering device, an air inlet hole is formed in the top face of the shell, an air outlet hole is formed in the side face of the shell, the air outlet hole and the air inlet hole are respectively communicated with the interior of the shell, and the plasma generating device is arranged in the shell. The outer filtering device is arranged in the shell, the outer filtering device is fixedly connected with the shell, the outer filtering device is annular, the axis of the annular outer filtering device is arranged in the vertical direction, the fan is fixed to the shell and arranged at the air inlet hole, and the fan is arranged in the air inlet hole. The fan blows air into an inner ring of the annular outer filtering device, the plasma generating device is arranged in the inner ring of the annular outer filtering device, and the plasma generating device is fixedly connected with the shell.

Description

Technical Field

[0001] The utility model relates to the field of air purification, in particular to a plasma air purifier. Background Art

[0002] Most air purifiers on the market are equipped with filters that can be used to filter dust and other substances in the air. In order to sterilize the outside air with bacteria, a plasma generator is also provided at the air outlet of the air purifier, which uses the air flow generated by the air purifier to blow the plasma to the outside. However, after a large amount of dust accumulates on the filter, bacteria are easily bred on the filter, and the bred bacteria will be blown into the air under the action of the air flow. Although the air outlet of the air purifier is equipped with a plasma generator, which can sterilize the air to a certain extent, due to the fast flow rate and the short time the air stays, it is impossible to effectively sterilize the air with bacteria, and the outside air is prone to secondary pollution. In order to avoid this situation, the replacement cycle of the filter is also relatively short, which leads to an increase in the cost of use. Utility Model Content

[0003] The technical problem to be solved by the utility model is to solve the above-mentioned technical problem.

[0004] The solution of the utility model to solve the technical problem is:

[0005] A plasma air purifier comprises a shell, a plasma generating device, a fan and an external filtering device, wherein the top surface of the shell is provided with an air inlet, the side surface of the shell is provided with an air outlet, the air outlet and the air inlet are respectively connected to the shell, the external filtering device is arranged in the shell, the external filtering device is fixedly connected to the shell, the external filtering device is arranged in an annular shape, the axis of the annular external filtering device is arranged vertically, the fan is fixed on the shell, the fan is arranged at the air inlet, the fan blows air into the inner circle of the annular external filtering device, the plasma generating device is arranged in the inner circle of the annular external filtering device, and the plasma generating device is fixedly connected to the shell.

[0006] As a further improvement of the above technical solution, a plurality of air outlet holes are provided, and all of the air outlet holes are provided on the side of the shell.

[0007] As a further improvement of the above technical solution, the fan is an axial flow fan.

[0008] As a further improvement of the above technical solution, the plasma generating device includes an electrode plate, an insulating plate and a grounding plate, the electrode plate, the insulating plate and the grounding plate are respectively arranged in a ring shape, the electrode plate, the insulating plate and the grounding plate are coaxially arranged, the insulating plate surrounds the electrode plate, the insulating plate is arranged between the electrode plate and the grounding plate, the electrode plate is provided with a plurality of first through holes, the insulating plate is provided with a plurality of second through holes, the grounding plate is provided with a plurality of third through holes, and the first through holes, the second through holes and the third through holes are connected one by one.

[0009] As a further improvement of the above technical solution, the electrode plate, the insulating plate and the grounding plate are sequentially bonded together.

[0010] As a further improvement of the above technical solution, the plasma air purifier also includes an internal filter device, which is arranged in the outer shell, the inner filter device is arranged on the outer shell, the inner filter device is arranged in a ring shape, and the plasma generating device is arranged between the inner filter device and the outer filter device.

[0011] As a further improvement of the above technical solution, the inner filtering device includes a filter screen, the filter screen is arranged in a ring shape, and the filter screen is connected to the outer shell.

[0012] As a further improvement of the above technical solution, the outer shell includes a shell and a top cover, the opening of the shell is upward, the top cover covers the opening of the shell, the air inlet is opened on the top cover, the fan is fixed on the top cover, the filter is arranged on the shell, the filter surrounds the fan, the air outlet is arranged on the side of the shell, the external filter device is arranged on the shell, and the plasma generator is arranged on the top cover.

[0013] As a further improvement of the above technical solution, the external filtering device includes a frame and a HEPA filter. The frame is arranged in a ring shape, and a plurality of mounting holes are opened on the circumferential surface of the frame. The HEPA filter is provided with a plurality of pieces, and the HEPA filters are installed in the mounting holes one by one. The frame is arranged on the shell, and the shell is detachably connected to the frame.

[0014] As a further improvement of the above technical solution, the inner bottom surface of the shell is provided with a first annular slot, and the frame is inserted into the first slot.

[0015] The beneficial effect of the utility model is that when in use, air is drawn by the fan, so that the outside air enters the shell from the air inlet. The air flow entering the shell first passes through the plasma generating device, then flows through the external filter device, and finally flows out from the air outlet. The plasma generating device can ionize the nearby air, thereby playing a role in disinfecting the passing air. There are ions or plasmas in the ionized air. These ions or plasmas can disinfect the external filter device when passing through the external filter device, thereby reducing the possibility of bacteria breeding on the external filter device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the plasma air purifier of the utility model;

[0017] Figure 2 The utility model Figure 1 Axonometric section view at AA in the figure;

[0018] Figure 3 It is an axonometric structural schematic diagram of the utility model.

[0019] In the accompanying drawings: 11-top cover, 111-air inlet, 12-shell, 121-air outlet, 2-plasma generating device, 21-electrode plate, 211-first through hole, 22-insulating plate, 221-second through hole, 23-grounding plate, 231-third through hole, 232-sinking platform, 3-fan, 41-HEPA filter, 42-frame, 5-filter, 8-first raised rib, 9-second raised rib. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the above briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of them. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0021] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the utility model can be combined interchangeably without conflicting with each other.

[0022] Reference Figure 1 to Figure 3 A plasma air purifier comprises a shell, a plasma generating device 2, a fan 3 and an external filtering device, wherein an air inlet 111 is provided on the top surface of the shell, an air outlet 121 is provided on the side of the shell, the air outlet 121 and the air inlet 111 are respectively connected to the shell, the external filtering device is arranged in the shell, the external filtering device is fixedly connected to the shell, the external filtering device is arranged in an annular shape, and the axis of the annular external filtering device is arranged vertically, the fan 3 is fixed on the shell, the fan 3 is arranged at the air inlet 111, the fan 3 blows wind into the inner circle of the annular external filtering device, the plasma generating device 2 is arranged in the inner circle of the annular external filtering device, and the plasma generating device 2 is fixedly connected to the shell.

[0023] As can be seen from the above, when in use, air is drawn through the fan 3, so that the outside air enters the housing from the air inlet 111. The air flow entering the housing first passes through the plasma generator 2, then flows through the external filter device, and finally flows out from the air outlet 121. The plasma generator 2 can ionize the nearby air, thereby playing a role in disinfecting the passing air. There are ions or plasmas in the ionized air. These ions or plasmas can disinfect the external filter device when passing through the external filter device, reducing the possibility of bacteria growing on the external filter device.

[0024] In order to enable the utility model to blow air to all around, so that the plasma spreads to all around, and thus kills bacteria in the surrounding environment, in some embodiments, a plurality of air outlet holes 121 are provided, and all of the air outlet holes 121 are provided on the side of the housing. Preferably, all of the air outlet holes 121 are evenly distributed on the circumferential surface of the housing.

[0025] In order to simplify the structure and facilitate installation, in some embodiments, the fan 3 is an axial flow fan 3. By adopting the axial flow fan 3, the axial flow fan 3 extracts the outside air, so that the outside air enters the shell. Driven by the axial flow fan 3, the air is blown downward to the bottom of the shell, forcing the air in the shell to flow out from the air outlet 121.

[0026] The plasma generating device 2 is used to generate plasma, so that the plasma can be uniformly generated and uniformly diffused around. In some embodiments, the plasma generating device 2 includes an electrode plate 21, an insulating plate 22 and a grounding plate 23, wherein the electrode plate 21, the insulating plate 22 and the grounding plate 23 are respectively arranged in a ring shape, and the electrode plate 21, the insulating plate 22 and the grounding plate 23 are arranged coaxially, and the insulating plate 22 surrounds the electrode plate 21, and the insulating plate 22 is arranged between the electrode plate 21 and the grounding plate 23. A plurality of first through holes 211 are provided on the electrode plate 21, a plurality of second through holes 221 are provided on the insulating plate 22, and a plurality of third through holes 231 are provided on the grounding plate 23, and the first through holes 211, the second through holes 221 and the third through holes 231 are connected one by one. When in use, the grounding plate 23 is grounded, and the electrode plate 21 is electrically connected to the high-voltage electrode, so that an electric field is generated between the electrode plate 21 and the grounding plate 23 to ionize the air passing through. For example, when the air near the grounding plate 23 is weakly ionized, the ions generated by the ionization collide with the air particles passing through the second through hole 221 and the third through hole 231, so that the particles are charged, thereby playing a role in disinfecting bacteria. When these air pass through the external filter device, they can also disinfect the external filter device. When the voltage is high enough to break down the air near the grounding plate 23 and generate plasma, these plasmas can reach the external filter device and disinfect the surface of the external filter device. If the plasma can flow out from the air outlet 121, it can also disinfect the air outside.

[0027] For easy installation, in some embodiments, the electrode plate 21, the insulating plate 22 and the grounding plate 23 are sequentially attached together. This structure is simple and convenient to set up. In actual use, a plurality of sinks 232 are provided on the surface of the grounding plate 23 attached to the insulating plate 22, and the sinks 232 and the third through holes 231 are arranged one by one, and the third through holes 231 are opened in the middle of the sinks 232. In this way, the short circuit problem caused by creepage can be avoided.

[0028] In order to prevent some dust or impurities with larger particles from directly entering the plasma generator 2, in some embodiments, the plasma air purifier further includes an inner filter device, which is arranged in the outer shell, the inner filter device is arranged on the outer shell, the inner filter device is arranged in a ring shape, and the plasma generator 2 is arranged between the inner filter device and the outer filter device. When in use, the dust with larger particles is first filtered by the inner filter device, and the air filtered by the inner filter device then enters the plasma generator 2.

[0029] The inner filter device is used to filter some foreign matters with larger particles. In some embodiments, the inner filter device includes a filter screen 5, which is arranged in an annular shape and connected to the outer shell. When in use, the air flow first enters the inner circle of the filter screen 5, passes through the filter screen 5 and enters the plasma generating device 2, and then enters the outer filter device, and finally the air flow flows out from the air outlet 121.

[0030] In order to facilitate the maintenance of the plasma air purifier, in some embodiments, the shell includes a shell 12 and a top cover 11, the opening of the shell 12 is upward, the top cover 11 covers the opening of the shell 12, the air inlet 111 is opened on the top cover 11, the fan 3 is fixed on the top cover 11, the filter 5 is arranged on the shell 12, the filter 5 surrounds the fan 3, the air outlet 121 is arranged on the side of the shell 12, the external filter device is arranged on the shell 12, and the plasma generator 2 is arranged on the top cover 11. The fan 3 and the plasma generator 2 are both installed on the top cover 11, and when the top cover 11 and the shell 12 are separated, the fan 3 and the plasma generator can be maintained. In addition, after the top cover 11 and the shell 12 are separated, the user can also easily replace the internal filter device and the external filter device, and the maintenance is very convenient.

[0031] Two second raised ribs 9 are provided on the bottom surface of the shell 12. The two second raised ribs 9 are respectively arranged in a ring shape. One second raised rib 9 is arranged in the inner circle of another second raised rib 9, so that a second slot is formed between the two second raised ribs 9, and the filter screen 5 is inserted in the second slot.

[0032] In order to make the filtering efficiency higher, in some embodiments, the external filtering device includes a frame 42 and a HEPA filter 41. The frame 42 is arranged in a ring shape, and a plurality of mounting holes are opened on the circumferential surface of the frame 42. The HEPA filter 41 is provided with a plurality of pieces, and the HEPA filter 41 is installed in the mounting holes one by one. The frame 42 is arranged on the shell 12, and the shell 12 is detachably connected to the frame 42. The HEPA filter 41 is a high-efficiency air filter that can effectively filter tiny particles in the air, such as dust, pollen, smoke, bacteria and viruses. The HEPA in the HEPA filter 41 is the abbreviation of High Efficiency Particulate Air, which means a high-efficiency particle filter that can filter particles with a diameter of 0.3 microns. The structure is simple and easy to set up.

[0033] In order to facilitate the assembly and disassembly between the frame 42 and the shell 12, in some embodiments, the inner bottom surface of the shell 12 is provided with an annular first slot, and the frame 42 is inserted into the first slot. When in use, the frame 42 is directly inserted into the first slot, and the frame 42 is limited by the first slot. For example, two first raised ribs 8 are provided on the bottom surface of the shell 12, and the two first raised ribs 8 are respectively arranged in concentric rings, wherein one first raised rib 8 is arranged in the inner circle of another first raised rib 8, so that a first slot is formed between the two first raised ribs 8.

[0034] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A plasma air purifier, comprising a housing, characterized in that: The invention also comprises a plasma generating device (2), a fan (3) and an external filtering device. The top surface of the shell is provided with an air inlet (111). The side surface of the shell is provided with an air outlet (121). The air outlet (121) and the air inlet (111) are respectively connected to the shell. The external filtering device is arranged in the shell. The external filtering device is fixedly connected to the shell. The external filtering device is arranged in an annular shape. The axis of the annular external filtering device is arranged vertically. The fan (3) is fixed to the shell. The fan (3) is arranged at the air inlet (111). The fan (3) blows air into the inner circle of the annular external filtering device. The plasma generating device (2) is arranged in the inner circle of the annular external filtering device. The plasma generating device (2) is fixedly connected to the shell.

2. The plasma air purifier according to claim 1, characterized in that: A plurality of the air outlet holes (121) are provided, and all of the air outlet holes (121) are provided on the side surface of the housing.

3. The plasma air purifier according to claim 1, characterized in that: The fan (3) is an axial flow fan (3).

4. The plasma air purifier according to claim 1, characterized in that: The plasma generating device (2) comprises an electrode plate (21), an insulating plate (22) and a grounding plate (23); the electrode plate (21), the insulating plate (22) and the grounding plate (23) are respectively arranged in a ring shape; the electrode plate (21), the insulating plate (22) and the grounding plate (23) are arranged coaxially; the insulating plate (22) surrounds the electrode plate (21); the insulating plate (22) is arranged between the electrode plate (21) and the grounding plate (23); a plurality of first through holes (211) are provided on the electrode plate (21); a plurality of second through holes (221) are provided on the insulating plate (22); a plurality of third through holes (231) are provided on the grounding plate (23); the first through holes (211), the second through holes (221) and the third through holes (231) are connected in a one-to-one correspondence.

5. The plasma air purifier according to claim 4, characterized in that: The electrode plate (21), the insulating plate (22) and the grounding plate (23) are sequentially bonded together.

6. The plasma air purifier according to claim 1, characterized in that: The plasma air purifier also includes an inner filter device, which is arranged in the outer shell, the inner filter device is arranged on the outer shell, the inner filter device is arranged in a ring shape, and the plasma generating device (2) is arranged between the inner filter device and the outer filter device.

7. The plasma air purifier according to claim 6, characterized in that: The inner filtering device comprises a filter screen (5), the filter screen (5) is arranged in a ring shape, and the filter screen (5) is connected to the outer shell.

8. The plasma air purifier according to claim 7, characterized in that: The outer shell comprises a shell (12) and a top cover (11); the opening of the shell (12) faces upward; the top cover (11) covers the opening of the shell (12); the air inlet (111) is provided on the top cover (11); the fan (3) is fixed on the top cover (11); the filter (5) is arranged on the shell (12); the filter (5) surrounds the fan (3); the air outlet (121) is arranged on the side of the shell (12); the external filter device is arranged on the shell (12); and the plasma generating device (2) is arranged on the top cover (11).

9. The plasma air purifier according to claim 8, characterized in that: The external filtering device comprises a frame (42) and a HEPA filter (41); the frame (42) is arranged in an annular shape; a plurality of mounting holes are opened on the circumferential surface of the frame (42); the HEPA filter (41) is provided with a plurality of pieces; the HEPA filter (41) is mounted in the mounting holes in a one-to-one correspondence; the frame (42) is arranged on the shell (12); and the shell (12) and the frame (42) are detachably connected in cooperation.

10. The plasma air purifier according to claim 9, characterized in that: The inner bottom surface of the shell (12) is provided with a first annular slot, and the frame (42) is inserted into the first slot.

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