Plug-in conductive filter

Abstract

This utility model belongs to the technical field of air purification equipment, and particularly relates to a plug-in conductive filter device, including a conductive housing, a filter screen, and a negative ion generator. The conductive housing has an axially extending accommodating cavity and an opening communicating with the accommodating cavity. Two opposing elastic metal sheets are provided on the inner wall of the conductive housing. The filter screen is pluggably disposed within the accommodating cavity through the opening; the outer wall of the filter screen abuts against the elastic metal sheets, thus forming an electrical connection between the conductive housing and the filter screen. The negative ion generator is connected to one side of the conductive housing to agglomerate dust near the filter screen. The direct abutment structure between the elastic metal sheets inside the conductive housing and the pluggable filter screen eliminates the need for any piercing or destructive fixing methods, avoiding the problems of poor contact or filter damage caused by improper piercing force in traditional filter grounding clamps, and achieving a stable electrical connection.

Description

Technical Field

[0001] This utility model belongs to the technical field of air purification equipment, and in particular relates to a plug-in conductive filter device. Background Technology

[0002] Air purification devices are common in the automotive industry, and filters are key filtration elements in these systems, used to capture and remove pollutants such as particulate matter, dust, and pollen from the air. Filters typically rely on physical adsorption, and their efficiency in capturing micron-sized particles is limited, especially in effectively removing nano-sized particles and gaseous pollutants.

[0003] Negative ion generators are frequently used in air purification systems. They work by using a pulsed, oscillating circuit to boost a low voltage to a high DC negative voltage. The high-voltage electrodes then generate a high corona discharge at the tip of a carbon fiber (or steel needle), rapidly releasing a large number of electrons. These electrons cannot exist in the air for long (their lifespan is only on the nanosecond scale) and are immediately captured by oxygen molecules, forming negative ions. Dust particles generally carry a positive charge, while negative ions carry a static charge; the attraction between positive and negative charges causes dust particles to clump together. The resulting aggregated dust clumps are larger and less likely to pass through a filter. When the device generates negative ions through a high negative voltage, a grounded metal plate is needed to collect static electricity and prevent it from leaking out and interfering with other electronic devices.

[0004] A patent with the published patent number "CN222015711U" titled "A Novel Filter Grounding Clip for an Air Purification System" mentions a piercing technology for the filter clip. By pinching the first and second clamping parts on both sides of the clamping plate, the first and second tips simultaneously pierce into the filter, contacting the activated carbon layer inside the mesh, thus achieving communication between the metal plate and the filter and realizing the filter grounding function. However, this method has obvious drawbacks. If too little force is applied, the tips on both sides of the clamping plate will not pierce the protective layer of the filter, resulting in poor contact with the activated carbon layer; conversely, if too much force is applied, the tips of the clamping plate will directly pierce the filter, damaging it. Utility Model Content

[0005] The purpose of this utility model is to provide a plug-in conductive filter device, which aims to solve the technical problem in the prior art where improper connection between the filter clip and the filter leads to poor contact or damage to the filter.

[0006] To achieve the above objectives, this utility model provides a plug-in conductive filter device, including... A conductive housing having an axially extending accommodating cavity and an opening communicating with the accommodating cavity, wherein the inner wall of the conductive housing is provided with two opposing elastic metal sheets; A filter screen is detachably disposed within the receiving cavity through the opening; the outer wall of the filter screen abuts against the elastic metal sheet, thereby forming an electrical connection between the conductive housing and the filter screen. A negative ion generator, connected to one side of the conductive housing, is used to agglomerate dust near the filter.

[0007] Furthermore, the conductive housing includes a support frame and an ionization base plate. The bottom of the support frame is detachably connected to the ionization base plate, and a continuously discharging negative ion generator is connected to one side of the ionization base plate.

[0008] Furthermore, the bottom of the ionization plate is provided with several uniformly arranged carbon brushes, and the negative ion generator is electrically connected to the carbon brushes, causing the tips of the carbon brushes to generate high corona discharge and release electrons.

[0009] Furthermore, the two elastic metal sheets are respectively located on the two opposite inner sidewalls of the conductive housing.

[0010] Furthermore, the filter screen is adapted to the accommodating cavity.

[0011] Furthermore, the support frame is provided with several slots around its perimeter, and the ionization base plate is provided with corresponding snap-fit ​​parts around its perimeter, the snap-fit ​​parts extending into the slots to form a snap-fit.

[0012] Furthermore, the filter screen includes several parallel wavy pleated structures and a filter frame that runs vertically through it, with the wavy pleated structures confined within the filter frame.

[0013] Furthermore, the lower side plate of the support frame is composed of a grid structure made up of several intersecting connecting ribs, and clearance grooves are formed between adjacent connecting ribs.

[0014] Furthermore, a clearance position is provided on one side of the support frame, which is used to avoid the connecting wires between the negative ion generator and the ionization base plate.

[0015] Furthermore, the filter screen contains a melt-blown layer.

[0016] The plug-in conductive filter device provided in this utility model embodiment has at least one of the following technical effects: In this design, the direct contact structure between the elastic metal sheet inside the conductive housing and the pluggable filter eliminates the need for any piercing or destructive fixing methods. This avoids the poor contact or filter damage problems caused by improper piercing force in traditional filter grounding clips, achieving a stable electrical connection. The continuous elastic pressure of the metal sheet ensures that the filter maintains a tight electrical contact after different insertion and removal cycles, improving connection durability. Simultaneously, the direct integration of the negative ion generator with the conductive housing allows the filter to immediately form a grounding circuit upon insertion, effectively releasing static charge and preventing static electricity accumulation from interfering with other electronic equipment. Positively charged dust particles combine with negative ions to form larger particles, which are then more efficiently captured by the filter, improving filtration efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 An overall structural diagram of the plug-in conductive filter device provided in an embodiment of this utility model; Figure 2 Disassembly structure 1 of the plug-in conductive filter device provided in this embodiment of the utility model; Figure 3 This is the second disassembly structure of the plug-in conductive filter device provided in this embodiment of the utility model; Figure 4 yes Figure 2 A magnified view of A in the middle.

[0019] The following are the labeling elements in the figure: 100. Conductive housing; 101. Support frame; 102. Ionization base plate; 103. Connecting rib; 104. Clearance groove; 110. Receiving cavity; 120. Opening; 130. Elastic metal sheet; 140. Carbon brush; 150. Slot; 160. Snap-fit ​​part; 170. Clearance area; 180. Connecting wire; 200. Filter screen; 210. Corrugated structure; 220. Filter frame; 230. Meltblown layer; 300. Negative ion generator. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings 1-4, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The following description is based on the accompanying drawings. Figure 1-4 The described embodiments are exemplary and intended to explain embodiments of the present invention, and should not be construed as limiting the present invention.

[0021] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0024] In one embodiment of this utility model, a plug-in conductive filter device is provided, such as... Figure 1-3As shown, the device includes a conductive housing 100, a filter 200, and a negative ion generator 300. The conductive housing 100 includes a support frame 101 and an ionization base plate 102. The bottom of the support frame 101 is detachably connected to the ionization base plate 102. The conductive housing 100 and the ionization base plate 102 together form an axially extending accommodating cavity 110 and an opening 120 communicating with the accommodating cavity 110. The filter 200 is made of activated carbon and serves a conductive function. The filter 200 is laterally inserted into or removed from the accommodating cavity 110 through the opening 120. A continuously discharging negative ion generator 300 is connected to one side of the ionization base plate 102. The negative ion generator 300 uses a pulse and oscillation circuit to boost a low voltage to a DC negative high voltage. Then, it utilizes the corona discharge effect of the high-voltage electrodes to generate a high corona discharge at the tip of a carbon fiber (or steel needle), rapidly releasing a large number of electrons. These electrons cannot exist in the air for long (their lifespan is only on the nanosecond scale) and are immediately captured by oxygen molecules in the air, forming negative ions. Dust particles generally carry a positive charge, while negative ions carry a static charge; positive and negative attract each other, causing the dust particles to clump together. The negative ion generator 300 is existing technology and will not be elaborated further here. The aggregated dust clumps become larger and are less likely to pass through the filter 200. For example, the pores of the filter 200 can only intercept dust particles with a diameter of 10µm; particles smaller than 10µm cannot be captured. However, by aggregating dust clumps into particles larger than 10µm, the filter 200 can capture them. This increases the size of the dust clumps, achieving the effect of adsorption onto the filter 200. Furthermore, the filter screen 200 includes a meltblown layer 230, which serves a filtering function. Through high-voltage discharge from the negative ion generator 300, charges adhere to the meltblown nonwoven fabric, enabling it to adsorb smaller particles, achieving a dual-effect. To prevent static electricity from overflowing from the filter screen 200 and interfering with other electronic devices, both sides of the filter screen 200 abut against the elastic metal sheets 130 of the conductive housing 100. Electrons are sequentially conducted through the elastic metal sheets 130 to the conductive housing 100 and discharged along the grounding terminal (not shown) electrically connected to the conductive housing 100.

[0025] Furthermore, such as Figure 3 As shown, the bottom of the ionization base plate 102 is provided with several uniformly arranged carbon brushes 140. The negative ion generator 300 is electrically connected to the carbon brushes 140, causing the tips of the carbon brushes 140 to generate a high corona discharge and release electrons. When the negative ion generator 300 is activated, the high-voltage DC negative charge it generates is conducted to the several uniformly arranged carbon brushes 140 at the bottom of the ionization base plate 102. The tip of each carbon brush 140 generates a strong corona discharge effect due to the high voltage applied, continuously and efficiently releasing electrons into the surrounding air. These electrons are quickly captured by oxygen molecules, thereby generating a large number of negative ions. The design of multiple uniformly arranged carbon brushes 140 constitutes a distributed discharge array, which greatly increases the effective area of ​​the discharge point.

[0026] Furthermore, such as Figure 4 As shown, the conductive housing 100 has elastic metal sheets 130 on both opposite inner walls, and the filter screen 200 is adapted to the receiving cavity 110. When the filter screen 200 is inserted into the receiving cavity 110 of the conductive housing 100 through the opening 120, its two opposite outer walls simultaneously contact and compress the elastic metal sheets 130 on the two opposite inner walls of the conductive housing 100. The elastic metal sheets 130 on both sides undergo elastic deformation synchronously under the action of the filter screen 200 insertion, thereby applying a symmetrical clamping force to the filter screen 200 from both sides. The filter screen 200 can maintain a tight connection with the conductive housing 100 during insertion and removal.

[0027] Furthermore, such as Figure 2 As shown, the support frame 101 has several slots 150 around its perimeter, and the ionization base plate 102 has corresponding snap-fit ​​parts 160 around its perimeter. The snap-fit ​​parts 160 extend into the slots 150 to form a snap-fit. When assembling the support frame 101 and the ionization base plate 102, the snap-fit ​​parts 160 are aligned with the slots 150 to complete the snap-fit.

[0028] Furthermore, such as Figure 2 As shown, the filter 200 includes several parallel corrugated structures 210 and a vertically extending filter frame 220, with the corrugated structures 210 confined within the filter frame 220. When air flows through the filter, the airflow is forced through these tortuous and extended corrugated channels, forcing dust particles in the air to come into maximum contact with the corrugated structures 210, thus enabling the filter to hold more dust particles and significantly increasing its dust holding capacity.

[0029] Furthermore, such as Figure 3 As shown, the lower side plate of the support frame 101 is composed of a grid structure of several intersecting connecting ribs 103, and clearance grooves 104 are formed between adjacent connecting ribs 103.

[0030] Furthermore, such as Figure 2 As shown, a clearance position 170 is provided on one side of the support frame 101. The clearance position 170 is used to avoid the connecting wire 180 between the negative ion generator 300 and the ionization base plate 102.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plug-in conductive filter device, characterized by, include A conductive housing (100) has an axially extending accommodating cavity (110) and an opening (120) communicating with the accommodating cavity (110), and the inner wall of the conductive housing (100) is provided with an elastic metal sheet (130). A filter screen (200) is detachably disposed in the receiving cavity (110) through the opening (120); the outer side wall of the filter screen (200) abuts against the elastic metal sheet (130), so that the conductive housing (100) and the filter screen (200) are electrically connected. A negative ion generator (300) is connected to one side of the conductive housing (100) to agglomerate dust near the filter (200).

2. The plug-in conductive filter device of claim 1, wherein, The conductive housing (100) includes a support frame (101) and an ionization base plate (102). The bottom of the support frame (101) is detachably connected to the ionization base plate (102). The negative ion generator (300) that continuously discharges is connected to one side of the ionization base plate (102).

3. The plug-in conductive filter device of claim 2, wherein, The bottom of the ionization base plate (102) is provided with a number of uniformly arranged carbon brushes (140). The negative ion generator (300) is electrically connected to the carbon brushes (140), so that the tip of the carbon brushes (140) generates a high corona discharge and releases electrons.

4. The plug-in conductive filter device of claim 1, wherein, The conductive housing (100) has elastic metal sheets (130) on both opposite inner sidewalls.

5. The plug-in conductive filter device of claim 1, wherein, The filter (200) is adapted to the accommodating cavity (110).

6. The plug-in conductive filter device of claim 2, wherein, The support frame (101) has several slots (150) around its perimeter, and the ionization base plate (102) has corresponding snap-fit ​​parts (160) around its perimeter. The snap-fit ​​parts (160) extend into the slots (150) to form a snap-fit.

7. The plug-in conductive filter device of claim 1, wherein, The filter screen (200) includes several parallel wave-like pleated structures (210) and a filter frame (220) that runs vertically through the filter screen. The wave-like pleated structures (210) are confined within the filter frame (220).

8. The plug-in conductive filter device of claim 2, wherein, The lower side plate of the support frame (101) is composed of a grid structure of several intersecting connecting ribs (103), and an open groove (104) is formed between adjacent connecting ribs (103).

9. The plug-in conductive filter device of claim 2, wherein, The support frame (101) has a clearance position (170) on one side, which is used to avoid the connecting wire (180) between the negative ion generator (300) and the ionization base plate (102).

10. The plug-in conductive filter device according to any one of claims 1-9, wherein, The filter screen (200) has a melt-blown layer (230) inside.

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