Negative ion module and air filter

Abstract

The utility model belongs to the technical field of air purification, and discloses a negative ion module and an air filter. The negative ion module comprises a mounting frame which is mounted on the air inlet side of the air filter; the grounding piece group is arranged on the inner ring of the mounting frame, the inner ring of the mounting frame is divided into a plurality of purification areas by the grounding piece group, and the grounding piece group is electrically connected to a grounding wire; the emission ends are arranged in the purification area, the number of the emission ends is multiple, and each emission end is electrically connected with the negative ion generator. According to the negative ion module, negative ions are emitted on the air inlet side of the air filter, so that particles with small particle sizes are gathered into larger particles which are more easily intercepted by the air filter, microorganisms such as bacteria on the air filter can be inactivated through the negative ions, and the effect of purifying air is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air purification, in particular to a negative ion module and an air filter. Background Art

[0002] An air filter is a device that captures dust from a gas-solid two-phase flow through the action of a porous filter material and purifies the gas. For example, the air-conditioning filter element for automobiles has a poor filtration efficiency for particulate matter below PM0.3 at present. If the filtration effect on small-particle-size particulate matter is improved by reducing the pore size, the air resistance will increase sharply, greatly reducing the amount of air that can be purified.

[0003] Therefore, the above problems need to be solved urgently. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a negative ion module and an air filter to improve the filtration effect on small-particle-size particulate matter without affecting the amount of filtered air.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A negative ion module, the negative ion module includes:

[0007] An installation frame, the installation frame is installed on the air inlet side of the air filter;

[0008] A grounding piece group, the grounding piece group is arranged on the inner ring of the installation frame, the grounding piece group divides the inner ring of the installation frame into several purification areas, and the grounding piece group is electrically connected to a grounding wire;

[0009] A negative ion generator and an emission end, the emission end is arranged inside the purification area, there are a plurality of emission ends, and each emission end is electrically connected to the negative ion generator.

[0010] Preferably, the installation frame includes:

[0011] A bottom frame, a plurality of groups of positioning shells are arranged at intervals on the inner ring of the bottom frame, an opening is arranged on the side of the positioning shell facing away from the air filter, the emission end is placed inside the positioning shell, and the emission end extends out of the opening, and both between adjacent two positioning shells and between the inner ring of the bottom frame and the positioning shell are connected by a first connecting piece; and

[0012] A frame cover, wherein the frame cover is arranged and positioned on a side of the bottom frame away from the air filter, a positioning cover is arranged on the frame cover corresponding to each positioning shell, two adjacent positioning covers and an inner circle of the frame cover and the positioning cover are connected via a second connecting piece, the positioning cover is arranged at the opening of the positioning shell, and the transmitting end extends out of the positioning cover.

[0013] Preferably, the frame cover is detachably connected to the bottom frame.

[0014] Preferably, the frame cover is snap-fitted with the bottom frame, and the positioning cover is snap-fitted with the positioning shell.

[0015] Preferably, a first accommodating cavity is provided on a side of the frame cover close to the bottom frame, the second connecting member is provided in one-to-one correspondence with the first connecting member, a second accommodating cavity is provided on a side of the second connecting member close to the first connecting member, and the first accommodating cavity, the second accommodating cavity and the positioning cover are connected to each other.

[0016] Preferably, two limiting members are arranged inside the positioning housing, and the transmitting end is pressed tightly between the two limiting members.

[0017] Preferably, a limit cover is plugged into the interior of the positioning shell, and the limit cover is arranged on the outside of the two limit members, and the limit cover is pressed against and positioned on the inner wall of the positioning shell.

[0018] Preferably, the grounding sheet group comprises:

[0019] A first grounding sheet and a second grounding sheet, wherein a plurality of the first grounding sheets and the second grounding sheets are arranged at intervals, and the first grounding sheets and the second grounding sheets are arranged alternately, so that the inner circle of the installation frame is divided into a plurality of the purification areas.

[0020] Preferably, a notch is formed on one side of the first grounding sheet and the second grounding sheet that are close to each other, and the position where the notch is formed on the first grounding sheet and the position where the notch is formed on the second grounding sheet fit together.

[0021] The air filter comprises an air filter body and a negative ion module, wherein the negative ion module is located at the air inlet side of the air filter body.

[0022] Beneficial effects of the utility model:

[0023] For the negative ion module of the present utility model, the inner ring of the installation frame is divided into several purification areas by a grounding sheet group, that is, several purification areas are formed on the air inlet side of the air filter, and the emission end is arranged inside the purification area. After the negative ion generator is powered on, the emission end will eject a large number of negative ions and form a uniform electric field inside the purification area. At this time, the grounding sheet shows positive electricity. After the negative ions are ejected, they will diverge and migrate towards the grounding sheet group under the influence of the electric field force, so that a large number of negative ions are evenly distributed inside the purification area. When small-particle-size particulate matter passes through the purification area, on the one hand, some particulate matter will be negatively charged, and the negatively charged particulate matter will aggregate with the positively charged particulate matter to become larger particulate matter, making the larger particulate matter easier to be intercepted by the air filter to improve the purification effect; on the other hand, the negative ions will be blown towards the air filter under the action of the air flow, and the negative ions can inactivate bacteria and other microorganisms on the air filter, further purifying the air without affecting the air filtration volume. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of the air filter of the present utility model;

[0025] Figure 2 is Figure 1 a partial enlarged view of part A in

[0026] Figure 3 is a partial schematic diagram of the negative ion module of the present utility model in the state of removing the frame cover and part of the limiting cover;

[0027] Figure 4 is a cross-sectional view of the positioning housing of the present utility model along the radial direction of the emission end;

[0028] Figure 5 is a schematic structural diagram of a part of the frame cover of the present utility model.

[0029] In the figure:

[0030] 1. Installation frame; 11. Bottom frame; 111. Positioning housing; 1111. Buckling block; 112. First connecting piece; 113. First cantilever buckle; 12. Frame cover; 121. Positioning cover; 1211. Second cantilever buckle; 122. Second connecting piece; 1221. Second accommodating cavity; 123. First accommodating cavity; 124. Card slot; 2. Grounding sheet group; 21. First grounding sheet; 22. Second grounding sheet; 23. Purification area; 3. Negative ion generator; 4. Emission end; 41. Wire; 5. Limiting piece; 51. Limiting groove; 52. Extension part; 53. Limiting part; 6. Limiting cover; 7. Air filter body. Detailed Embodiment

[0031] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the convenience of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0032] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0033] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0034] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, 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 thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0035] The following refers to Figures 1 to 5 to illustrate the negative ion module and the air filter provided by the present utility model.

[0036] Referring to Figure 1 , this air filter includes an air filter body 7 and a negative ion module. In this embodiment, the air filter body 7 is described by taking the air conditioning filter element of an automobile as an example. Optionally, in other embodiments, the air filter can also be an air filter element for a clean workshop, a laboratory, and a clean room. The negative ion module is located on the air inlet side of the air filter body 7, that is, the negative ion module is located on the air inlet side of the air conditioning filter element.

[0037] The negative ion module is designed to spray negative ions on the air inlet side of the air conditioner filter element during operation, so that smaller particulate matters on the air inlet side of the air conditioner filter element gather into larger particulate matters, making it easier to be intercepted by the air conditioner filter element. It should be noted that in this embodiment, the smaller particulate matters refer to particulate matters below PM0.3. In addition, when the negative ions on the air inlet side of the air conditioner filter element are blown towards the filter element surface under the action of the air flow, they can inactivate bacteria and other microorganisms on the air conditioner filter element, making the air entering the passenger compartment cleaner and protecting the breathing health of the driver and passengers.

[0038] Referring to Figures 1 to 5 , the negative ion module includes a mounting frame 1, a grounding sheet group 2, a negative ion generator 3, and a transmitting end 4. The mounting frame 1 is connected to the air filter body 7. The grounding sheet group 2 is arranged on the inner circle of the mounting frame 1. The negative ion generator 3 is placed on the outer circle of the mounting frame 1. The transmitting end 4 is placed on the inner circle of the mounting frame 1 and is electrically connected to the negative ion generator 3.

[0039] Specifically, the mounting frame 1 includes a bottom frame 11 and a frame cover 12. The bottom frame 11 is a square frame, and the bottom frame 11 is arranged parallel to the air filter body 7. The four sides of the bottom frame 11 are connected to the frame of the air filter body 7. The grounding sheet group 2 is arranged on the inner circle of the bottom frame 11. The grounding sheet group 2 divides the inner circle of the bottom frame 11 into several purification areas 23. The grounding sheet group 2 is electrically connected to the grounding wire through a wire 41. The grounding sheet group 2 includes a first grounding sheet 21 and a second grounding sheet 22, and both the first grounding sheet 21 and the second grounding sheet 22 are provided with a plurality of them at intervals. In this example, both the first grounding sheet 21 and the second grounding sheet 22 are provided with three. The three first grounding sheets 21 are arranged in parallel, and the three second grounding sheets 22 are arranged in parallel. The first grounding sheet 21 and the second grounding sheet 22 are arranged in an alternating manner. In this embodiment, the length direction of the first grounding sheet 21 is perpendicular to the length direction of the second grounding sheet 22, so that the three first grounding sheets 21 and the three second grounding sheets 22 divide to form nine squares, and a purification area 23 is formed inside each square.

[0040] Furthermore, notches are opened on one side of the first grounding sheet 21 and the second grounding sheet 22 close to each other, and the positions where the notches are opened on the first grounding sheet 21 and the second grounding sheet 22 are fitted with each other. It can be understood that the first grounding sheet 21 and the second grounding sheet 22 are inserted and matched through the notches, so that a part of the first grounding sheet 21 is embedded into the notch of the second grounding sheet 22, and a part of the second grounding sheet 22 is embedded into the notch of the first grounding sheet 21. Thus, both the side of the first grounding sheet 21 and the second grounding sheet 22 close to the air filter body 7 and the side away from the air filter body 7 are flush, preventing the first grounding sheet 21 from protruding from the second grounding sheet 22 and the second grounding sheet 22 from protruding from the first grounding sheet 21, making the whole grounding sheet group 2 more regular.

[0041] Optionally, in other embodiments, the purification area 23 can also be formed by directly connecting a second grounding piece 22 with the same length as the side length of the purification area 23 between two adjacent first grounding pieces 21, or by connecting a plurality of first grounding pieces 21 and second grounding pieces 22 with the same length as the side length of the purification area 23 to form a grounding piece group 2.

[0042] Referring to Figure 1 、 Figure 2 and Figure 3 , a plurality of groups of positioning shells 111 are arranged at intervals in the inner circle of the bottom frame 11. Specifically, a plurality of groups of positioning shells 111 are distributed along the length direction of the first grounding piece 21 in the inner circle of the bottom frame 11. In this embodiment, three groups are taken as an example. Each group of positioning shells 111 is distributed with three along the length direction of the second grounding piece 22. Each positioning shell 111 is arranged in one-to-one correspondence with each purification area 23, and the positioning shell 111 is located at the center of the purification area 23. An opening is arranged on one side of each positioning shell 111 facing away from the air filter.

[0043] Furthermore, a transmitter 4 is arranged inside each positioning shell 111. The transmitter 4 is arranged in a cylindrical shape, and the axis of the transmitter 4 is perpendicular to the air filter body 7. In this embodiment, the material of the transmitter 4 is carbon fiber. Each transmitter 4 is electrically connected to the negative ion generator 3 located outside the installation frame 1 through a wire 41. In other embodiments, the negative ion generator 3 can also be placed inside the installation frame 1 to adapt to the situation where it is inconvenient to install the negative ion generator 3 outside the installation frame 1. Therefore, the installation position of the negative ion generator 3 can be selected according to the situation.

[0044] In addition, adjacent two positioning shells 111 and between the inner circle of the bottom frame 11 and the positioning shell 111 are connected through a first connecting piece 112. All the positioning shells 111 and the bottom frame 11 are connected into a whole through the first connecting piece 112 to realize the fixation of the positioning shell 111. Exemplarily, in this embodiment, the bottom frame 11, the positioning shell 111 and the first connecting piece 112 are all made of plastic material and integrally injection molded. In other embodiments, the bottom frame 11, the positioning shell 111 and the first connecting piece 112 can also be connected by means of bonding or screw connection.

[0045] Based on the above-mentioned content, when the negative ion generator 3 is powered on, through the pulse oscillation circuit of the negative ion generator 3, the low voltage is boosted to a DC negative high voltage by the high voltage module, and then a large number of negative ions are sprayed inside the purification area 23 by the transmitter 4, and a uniform electric field is formed inside the purification area 23. At this time, the grounding piece shows positive electricity, and the negative ions will diverge and migrate towards the first grounding piece 21 and the second grounding piece 22 under the influence of the electric field force, so that a large number of negative ions are evenly distributed inside the purification area 23.

[0046] As a result, small-sized particles are negatively charged when passing through the purification area 23, and the negatively charged particles are aggregated with the positively charged particles to become larger particles, so that the aggregated particles are more easily intercepted by the air filter body 7, thereby improving the filtering effect of the air filter body 7. In addition, the airflow on the air inlet side of the air filter body 7 will drive negative ions to blow toward the air filter body 7, and the negative ions are used to inactivate microorganisms such as bacteria on the air filter body 7, thereby further improving the quality of air entering the passenger compartment without affecting the amount of filtered air.

[0047] Further, the frame cover 12 is covered and positioned on the side of the bottom frame 11 away from the air filter body 7. A positioning cover 121 is provided on the frame cover 12 corresponding to each positioning housing 111. The top end of the transmitting end 4 extends out of the positioning cover 121. The positioning cover 121 covers the opening of the positioning housing 111 to prevent the transmitting end 4 from being separated from the positioning housing 111. Two adjacent positioning covers 121 and the inner circle of the frame cover 12 and the positioning cover 121 are connected by a second connecting member 122. The second connecting member 122 is provided in a one-to-one correspondence with the first connecting member 112. In this embodiment, the frame cover 12, the positioning cover 121 and the second connecting member 122 are all made of plastic material and are integrally injection molded. In other embodiments, the frame cover 12, the positioning cover 121 and the second connecting member 122 can also be connected by bonding or screw connection.

[0048] The frame cover 12 is detachably connected to the bottom frame 11. Specifically, in this embodiment, the detachable connection mode of the frame cover 12 and the bottom frame 11 is buckling. A plurality of first cantilever buckles 113 are arranged on the bottom frame 11. A slot 124 is provided at a position corresponding to each first cantilever buckle 113 on the frame cover 12. The first cantilever buckle 113 is buckled with the frame cover 12 after passing through the slot 124. It should be noted that in other embodiments, the frame cover 12 and the bottom frame 11 can also be detachably connected by screw connection or the like. In this embodiment, the positioning cover 121 is buckled with the positioning housing 111. For example, a plurality of second cantilever buckles 1211 are arranged on the positioning cover 121. A buckling block 1111 is provided at a position corresponding to each second cantilever buckle 1211 on the outer wall of the positioning housing 111. A single second cantilever buckle 1211 is buckled with a single buckling block 1111, so that the opening of the positioning housing 111 is covered by the positioning cover 121.

[0049] Reference Figure 3 and Figure 4, To further limit the transmitter 4, two limiting members 5 are provided inside the positioning housing 111, and the transmitter 4 abuts between the two limiting members 5. In this embodiment, the limiting members 5 are flexible rubber blocks, and limiting grooves 51 are formed on the sides of the two rubber blocks close to each other. The two limiting grooves 51 cooperate to form a space for accommodating the transmitter 4. The two limiting members 5 elastically wrap the transmitter 4 to play a role in waterproofing and dustproofing the transmitter 4. In addition, a limiting cover 6 is inserted and fitted inside the positioning housing 111. The limiting cover 6 covers the outside of the two limiting members 5. The limiting cover 6 is provided with two opposite openings along the axial direction of the transmitter 4. The limiting cover 6 abuts and is positioned on the inner wall of the positioning housing 111, that is, the side of the limiting cover 6 is inserted into the gap between the limiting member 5 and the inner wall of the positioning housing 111, and the side of the limiting cover 6 abuts against the limiting member 5 and the inner wall of the positioning housing 111, so as to realize the positioning of the limiting cover 6 itself.

[0050] Further, extension parts 52 are connected to both of the two limiting members 5. Each extension part 52 is in a semi-circular ring shape. The two extension parts 52 cooperate to form a circular ring covering the transmitter 4. The extension parts 52 extend out of the limiting cover 6 and the positioning cover 121. And a limiting part 53 is connected to the outer wall of each extension part 52. Each limiting part 53 is in a semi-circular ring shape. The side of the limiting part 53 close to the limiting member 5 abuts against the positioning cover 121, and the outer ring of the limiting part 53 gradually decreases from the direction away from the limiting member 5 to the direction close to the limiting member 5.

[0051] Based on the above-mentioned content, when the limiting cover 6 covers the limiting member 5, the outer ring of the limiting part 53 guides and limits the limiting cover 6, and the limiting cover 6 passes through due to the deformation of the limiting part 53 itself. In addition, when the positioning cover 121 covers the outside of the positioning housing 111, the limiting part 53 has a certain limiting effect on the positioning cover 121. By providing the extension parts 52 and the limiting parts 53, a better protection effect is achieved on the transmitter 4, and water, dust, etc. outside the positioning cover 121 can be prevented from entering the positioning cover 121 through the opening of the positioning cover 121.

[0052] Refer to Figure 3 and Figure 5 , In addition, a first accommodation cavity 123 is provided on the side of the frame cover 12 close to the bottom frame 11. A second accommodation cavity 1221 is provided on the side of the second connecting member 122 close to the first connecting member 112. The first accommodation cavity 123, the second accommodation cavity 1221 and the positioning cover 121 communicate with each other, so that the wire 41 can be arranged inside the first accommodation cavity 123, the second accommodation cavity 1221 and the positioning cover 121, which is not only more beautiful but also has a better protection effect on the wire 41.

[0053] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. Negative ion module, characterized in that, The negative ion module includes: An installation frame (1), which is installed on the air inlet side of the air filter; A grounding piece group (2), which is arranged on the inner ring of the installation frame (1). The grounding piece group (2) divides the inner ring of the installation frame (1) into several purification areas (23), and the grounding piece group (2) is electrically connected to a grounding wire; A negative ion generator (3) and a transmitting end (4). The transmitting end (4) is arranged inside the purification area (23). There are multiple transmitting ends (4), and each transmitting end (4) is electrically connected to the negative ion generator (3).

2. The negative ion module according to claim 1, characterized in that, The installation frame (1) includes: A bottom frame (11). Multiple groups of positioning shells (111) are arranged at intervals on the inner ring of the bottom frame (11). An opening is arranged on the side of the positioning shell (111) facing away from the air filter. The transmitting end (4) is placed inside the positioning shell (111), and the transmitting end (4) extends out of the opening. The space between adjacent two positioning shells (111) and the space between the inner ring of the bottom frame (11) and the positioning shell (111) are both connected by a first connecting piece (112); and A frame cover (12), which covers and is positioned on the side of the bottom frame (11) facing away from the air filter. A positioning cover (121) is arranged on the frame cover (12) corresponding to each positioning shell (111). The space between adjacent two positioning covers (121) and the space between the inner ring of the frame cover (12) and the positioning cover (121) are both connected by a second connecting piece (122). The positioning cover (121) covers the opening of the positioning shell (111), and the transmitting end (4) extends out of the positioning cover (121).

3. The negative ion module according to claim 2, wherein, The frame cover (12) is detachably connected to the bottom frame (11).

4. The negative ion module according to claim 3, characterized in that, The frame cover (12) is snap-fitted with the bottom frame (11), and the positioning cover (121) is snap-fitted with the positioning shell (111).

5. The negative ion module according to claim 2, wherein A first accommodation cavity (123) is arranged on the side of the frame cover (12) close to the bottom frame (11). The second connecting piece (122) is arranged corresponding to the first connecting piece (112). A second accommodation cavity (1221) is arranged on the side of the second connecting piece (122) close to the first connecting piece (112). The first accommodation cavity (123), the second accommodation cavity (1221) and the positioning cover (121) communicate with each other.

6. The negative ion module according to claim 2, characterized in that, Two limiting pieces (5) are arranged inside the positioning shell (111), and the transmitting end (4) is pressed between the two limiting pieces (5).

7. The negative ion module according to claim 6, characterized in that, A limiting cover (6) is inserted and fitted inside the positioning shell (111). The limiting cover (6) covers the outside of the two limiting pieces (5), and the limiting cover (6) is pressed and positioned on the inner wall of the positioning shell (111).

8. The negative ion module according to claim 1, wherein, The grounding piece group (2) includes: The first grounding piece (21) and the second grounding piece (22), a plurality of the first grounding pieces (21) and the second grounding pieces (22) are both arranged at intervals, the first grounding pieces (21) and the second grounding pieces (22) are arranged in a staggered manner, so that the inner ring of the mounting frame (1) is divided to form a plurality of the purification areas (23).

9. The negative ion module according to claim 8, characterized in that, Notches are formed on one side of the first grounding piece (21) and the second grounding piece (22) close to each other, and the positions where the notches are formed on the first grounding piece (21) and the positions where the notches are formed on the second grounding piece (22) are fitted with each other.

10. Air filter, comprising an air filter body (7), characterized in that, The air filter further includes a negative ion module according to any one of claims 1-9, and the negative ion module is located on the air inlet side of the air filter body (7).

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