Air purifier adopting plasma sterilization mechanism

By introducing a plasma sterilization mechanism and a spring damping rod limiting ball structure into the air purifier, the problem of difficult filter installation and removal is solved, enabling rapid filter replacement and efficient air purification, thus improving the practicality and efficiency of the air purifier.

CN224261898UActive Publication Date: 2026-05-19上海尚远建设工程有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
上海尚远建设工程有限公司
Filing Date
2025-07-16
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

The filters in existing air purifiers are not easy to remove and install quickly, making cleaning difficult after prolonged use and affecting air filtration efficiency and overall efficiency.

Method used

The air purifier is designed with a plasma sterilization mechanism. The filter is easy to install and remove through the spring damping rod and limit ball structure. It combines a pre-filter, activated carbon filter and HEPA filter, and works with a centrifugal fan and plasma generator to purify the air.

Benefits of technology

It enables time-saving and labor-saving disassembly and assembly of the filter, improves air purification efficiency, enhances the practicality and efficiency of the air purifier, and can effectively filter large particles, adsorb harmful gases, and decompose bacteria.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an air purifier adopting a plasma sterilization mechanism, and relates to the technical field of air purifiers, the air purifier comprises a main machine body and a filtering assembly, the bottom of the main machine body is provided with supporting column feet, and the filtering assembly is arranged on the front side in the main machine body; the filter assembly comprises a mounting frame, bearing grooves, spring damping rods, limiting balls, a primary filter screen, limiting through grooves, an activated carbon filter screen and an HEPA filter screen, the bearing grooves are formed in the two sides of the interior of the mounting frame, the spring damping rods are mounted in the bearing grooves, the limiting balls are mounted at the front ends of the spring damping rods, the primary filter screen is connected into the mounting frame, and the activated carbon filter screen is connected with the limiting through grooves. Limiting through grooves are formed in the two sides of the interior of the primary filter screen, and an activated carbon filter screen is arranged at the rear end of the primary filter screen. According to the air purifier adopting the plasma sterilization mechanism, a filter screen arranged in the air purifier can be quickly disassembled and assembled, so that time and labor are saved during cleaning of the filter screen, and the overall practicability and the use efficiency of the air purifier are improved.
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Description

Technical Field

[0001] This utility model relates to the field of air purifier technology, specifically to an air purifier that employs a plasma sterilization mechanism. Background Technology

[0002] Air purifiers, also known as "air cleaners" or "air fresheners," are products that can adsorb, decompose, or transform various air pollutants, effectively improving air cleanliness. They are primarily household and commercial air purifiers designed to remove indoor air pollution. Air purifiers typically combine passive and active purification methods. A motor circulates indoor air, and polluted air passes through an internal air filter, where various pollutants are removed or adsorbed. A plasma generator produces plasma through high-voltage discharge; this plasma has dust-removing, sterilizing, and deodorizing functions, effectively purifying the air. The plasma generator uses a specific voltage to convert electrons into charged ions from airborne particles, forming millions of positive and negative ions. These ions can adsorb, decompose, or transform pollutants, odors, and bacteria in the air, thus achieving air purification. To improve air purification efficiency, an air purifier is needed; however, existing air purifiers still have the following shortcomings:

[0003] When using existing air purifiers, the internal filters are not easy to remove and clean quickly, which makes them difficult to remove and clean after a long period of use. This affects the air filtration efficiency, and the removal and installation are time-consuming and laborious, resulting in a decrease in the practicality and efficiency of the air purifier. Utility Model Content

[0004] The purpose of this invention is to provide an air purifier that employs a plasma sterilization mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an air purifier employing a plasma sterilization mechanism, comprising a main body and a filter assembly. The main body has supporting columns installed at its bottom. The filter assembly is located inside the front of the main body and includes a mounting frame, receiving grooves, a spring damping rod, a limiting ball, a pre-filter, a limiting channel, an activated carbon filter, and a HEPA filter. The mounting frame has receiving grooves on both sides, and a spring damping rod is installed inside each groove. A limiting ball is installed at the front end of the spring damping rod. A pre-filter is connected inside the mounting frame, and limiting channels are opened on both sides of the pre-filter. An activated carbon filter is located at the rear end of the pre-filter, and a HEPA filter is located at the rear end of the activated carbon filter. A purification assembly is located inside the rear of the main body.

[0006] Furthermore, the spring damping rod and the limiting ball are distributed perpendicularly, and the limiting ball is elastically connected to the receiving groove through the spring damping rod.

[0007] Furthermore, the external dimensions of the limiting ball are adapted to the internal dimensions of the limiting groove, and the limiting ball is connected to the primary filter screen through the limiting groove.

[0008] Furthermore, a pre-filter and a HEPA filter are respectively provided before and after the activated carbon filter, and the activated carbon filter is positioned and confined between the pre-filter and the HEPA filter.

[0009] Furthermore, the purification component includes an air guide plate, an air duct, a centrifugal fan, and a plasma generator. The air guide plate has an air duct inside, a centrifugal fan is installed at the lower end of the air guide plate, and a plasma generator is installed at the upper end of the air guide plate.

[0010] Furthermore, the purification component also includes an air outlet, a front protective baffle, and an air inlet. The air outlet is located at the upper part of the main body, and the front protective baffle is located at the front end of the main body, with an air inlet located inside the front protective baffle.

[0011] Furthermore, the external dimensions of the air guide plate are adapted to the internal dimensions of the main body, and the air guide plate is fixedly connected to the main body by bolts.

[0012] Furthermore, the plasma generator is embedded in the main body and is fixedly connected to the main body by bolts.

[0013] This utility model provides an air purifier that employs a plasma sterilization mechanism, which has the following beneficial effects:

[0014] 1. This utility model, through the setting of the filter component, enables the air purifier using a plasma sterilization mechanism to use a spring damping rod to elastically connect the limiting ball and the receiving groove. At the same time, the limiting ball, in conjunction with the limiting through groove, fixes the pre-filter inside the mounting frame, thus making the installation and removal of the pre-filter time-saving and labor-saving. Similarly, the activated carbon filter and HEPA filter are fixedly installed inside the main body. The pre-filter filters large particles and dust, while the activated carbon filter adsorbs harmful gases and odors in the air, and the HEPA filter efficiently filters fine particles in the air, thereby improving air purification efficiency and increasing the overall practicality and efficiency of the air purifier.

[0015] 2. This utility model, through the design of its purification components, enables air purifiers employing plasma sterilization mechanisms to draw air into the main unit via a centrifugal fan through the air inlet of the front protective baffle. Simultaneously, the centrifugal fan's exhaust outlet transports the filtered air upwards through the main unit. The filtered air then enters the cavity at the upper part of the main unit through an air duct inside the air guide plate. A plasma generator within this cavity converts the electrons of airborne particles into charged ions, forming millions of positive and negative ions. These ions are then discharged through the air outlet at the upper part of the main unit. By adsorbing, decomposing, or transforming pollutants, odors, and bacteria in the air, this ionization purifies the air, improving the overall practicality and efficiency of the air purifier. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of an air purifier employing a plasma sterilization mechanism according to the present invention.

[0017] Figure 2 This is a three-dimensional sectional view of the unfolded structure of the filter component of an air purifier employing a plasma sterilization mechanism according to this utility model.

[0018] Figure 3 This is a three-dimensional sectional view of the purification component of an air purifier employing a plasma sterilization mechanism, according to the present invention.

[0019] In the diagram: 1. Main body; 2. Support column; 3. Filter assembly; 301. Mounting frame; 302. Receiving groove; 303. Spring damping rod; 304. Limiting ball; 305. Primary filter; 306. Limiting channel; 307. Activated carbon filter; 308. HEPA filter; 4. Purification assembly; 401. Air guide plate; 402. Air duct; 403. Centrifugal fan; 404. Plasma generator; 405. Air outlet; 406. Front protective baffle; 407. Air inlet. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0021] like Figures 1 to 3As shown, an air purifier employing a plasma sterilization mechanism includes a main body 1 and a filter assembly 3. The main body 1 has a support column 2 at its bottom. The filter assembly 3 is located inside the front of the main body 1 and includes a mounting frame 301, a receiving groove 302, a spring damping rod 303, a limiting ball 304, a pre-filter 305, a limiting through groove 306, an activated carbon filter 307, and a HEPA filter 308. The mounting frame 301 has receiving grooves 302 on both sides inside, and a spring damping rod 303 is installed inside the receiving groove 302. A limiting ball 304 is installed at the front end of the spring damping rod 303. The mounting frame 301... 1. An internal pre-filter 305 is connected, and limiting grooves 306 are formed on both sides of the pre-filter 305. An activated carbon filter 307 is set at the rear end of the pre-filter 305, and a HEPA filter 308 is set at the rear end of the activated carbon filter 307. A spring damping rod 303 and a limiting ball 304 are vertically distributed, and the limiting ball 304 is elastically connected to the receiving groove 302 through the spring damping rod 303. The external dimensions of the limiting ball 304 are adapted to the internal dimensions of the limiting groove 306, and the limiting ball 304 is connected to the pre-filter 305 through the limiting groove 306. Pre-filters are set at the front and rear of the activated carbon filter 307. The filter screen 305 and HEPA filter screen 308, and the activated carbon filter screen 307 are disposed and constrained between the pre-filter screen 305 and HEPA filter screen 308. A spring damping rod 303 is fixedly installed inside the mounting frame 301, with receiving grooves 302 on both sides, by fastening bolts. A limiting ball 304 is fixedly installed at the front end of the spring damping rod 303 in conjunction with the fastening bolts. The spring damping rod 303 allows the limiting ball 304 to elastically connect with the receiving groove 302. Simultaneously, the external dimensions of the pre-filter screen 305 are adapted to the internal dimensions of the mounting frame 301, and the internal dimensions of the limiting grooves 306 on both sides of the pre-filter screen 305 are... The limiting ball 304 is externally compatible, so the pre-filter 305 is fixedly installed inside the mounting frame 301 by the limiting ball 304 and the limiting groove 306. This makes the installation and removal of the pre-filter 305 time-saving and labor-saving. Similarly, the activated carbon filter 307 and the HEPA filter 308 are fixedly installed inside the main body 1. The pre-filter 305 filters large particles and dust, while the activated carbon filter 307 adsorbs harmful gases and odors in the air, and the HEPA filter 308 efficiently filters fine particles in the air, thereby improving air purification efficiency and increasing the overall practicality and efficiency of the air purifier.

[0022] like Figure 1 and Figure 3As shown, a purification component 4 is installed on the rear side of the main body 1. The purification component 4 includes an air guide plate 401, an air duct 402, a centrifugal fan 403, and a plasma generator 404. The air guide plate 401 has an air duct 402 inside, and the centrifugal fan 403 is installed at the lower end of the air guide plate 401. The plasma generator 404 is installed at the upper end of the air guide plate 401. The purification component 4 also includes an air outlet 405, a front protective baffle 406, and an air inlet 407. The air outlet 405 is installed at the upper end of the main body 1, and the front protective baffle 406 is installed at the front end of the main body 1. The air inlet 407 is installed inside the front protective baffle 406. The external dimensions of the air guide plate 401 are adapted to the internal dimensions of the main body 1, and the air guide plate 401 is fixedly connected to the main body 1 by bolts. The plasma generator 404 is embedded in the main body 1, and the plasma generator 404 communicates with the main body 1. The centrifugal fan 403 is fixedly installed inside the rear end of the main body 1 by bolts. The centrifugal fan 403 draws air into the main body 1 through the air inlet 407 of the front protective baffle 406. At the same time, the centrifugal fan 403 exhausts the filtered air to the upper part of the main body 1. The filtered air enters the cavity at the upper end of the main body 1 through the air duct 402 inside the air guide plate 401. The plasma generator 404 set in the cavity converts the electrons of the particles in the air into charged ions, forming millions of positive and negative ions. At the same time, the positive and negative ions are discharged through the air outlet 405 set at the upper end of the main body 1. These ions adsorb, decompose or transform pollutants, odors and bacteria in the air, thereby achieving the purpose of purifying the air and improving the overall practicality and efficiency of the air purifier.

[0023] In summary, this air purifier employing a plasma sterilization mechanism first enhances stability during operation through the support columns 2 mounted at the bottom of the main unit 1. A spring damping rod 303 elastically connects the limiting ball 304 to the receiving groove 302. Simultaneously, the limiting ball 304, in conjunction with the limiting through groove 306, securely mounts the pre-filter 305 inside the mounting frame 301, making the installation and removal of the pre-filter 305 quick and easy. Similarly, the activated carbon filter 307 and HEPA filter 308 are secured inside the main unit 1. The pre-filter 305 filters large particles and dust, while the activated carbon filter 307 adsorbs harmful gases and odors from the air, and the HEPA filter 308 efficiently filters fine particulate matter, thereby improving air purification efficiency. Next, the centrifugal fan 403 draws air into the main body 1 through the air inlet 407 of the front protective baffle 406. At the same time, the centrifugal fan 403 exhausts the filtered air to the upper part of the main body 1. The filtered air enters the cavity at the upper part of the main body 1 through the air duct 402 inside the air guide plate 401. The plasma generator 404 installed in the cavity converts the electrons of the particles in the air into charged ions, forming millions of positive and negative ions. At the same time, the positive and negative ions are discharged through the air outlet 405 installed at the upper part of the main body 1. Through these ions, pollutants, odors and bacteria in the air are adsorbed, decomposed or transformed, thereby achieving the purpose of purifying the air and improving the overall practicality and efficiency of the air purifier.

[0024] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An air purifier employing a plasma sterilization mechanism, comprising a main body (1) and a filter assembly (3), characterized in that, The main body (1) is equipped with a support column (2) at the bottom. A filter assembly (3) is provided on the front side inside the main body (1). The filter assembly (3) includes a mounting frame (301), a receiving groove (302), a spring damping rod (303), a limiting ball (304), a primary filter (305), a limiting through groove (306), an activated carbon filter (307), and a HEPA filter (308). The mounting frame (301) has receiving grooves (302) on both sides inside. The unit is equipped with a spring damping rod (303), and a limiting ball (304) is installed at the front end of the spring damping rod (303). A primary filter (305) is connected inside the mounting frame (301), and a limiting groove (306) is opened on both sides inside the primary filter (305). An activated carbon filter (307) is provided at the rear end of the primary filter (305), and a HEPA filter (308) is provided at the rear end of the activated carbon filter (307). A purification component (4) is provided inside the rear side of the main body (1).

2. An air purifier employing a plasma sterilization mechanism according to claim 1, characterized in that, The spring damping rod (303) and the limiting ball (304) are distributed perpendicularly, and the limiting ball (304) is elastically connected to the receiving groove (302) through the spring damping rod (303).

3. An air purifier employing a plasma sterilization mechanism according to claim 1, characterized in that, The external dimensions of the limiting ball (304) are adapted to the internal dimensions of the limiting groove (306), and the limiting ball (304) is connected to the primary filter (305) through the limiting groove (306).

4. An air purifier employing a plasma sterilization mechanism according to claim 1, characterized in that, The activated carbon filter (307) is provided with a pre-filter (305) and a HEPA filter (308) in front of and behind it, respectively, and the activated carbon filter (307) is disposed and confined between the pre-filter (305) and the HEPA filter (308).

5. An air purifier employing a plasma sterilization mechanism according to claim 1, characterized in that, The purification component (4) includes an air guide plate (401), an air duct (402), a centrifugal fan (403), and a plasma generator (404). The air guide plate (401) has an air duct (402) inside, and a centrifugal fan (403) is provided at the lower end of the air guide plate (401), and a plasma generator (404) is installed at the upper end of the air guide plate (401).

6. An air purifier employing a plasma sterilization mechanism according to claim 5, characterized in that, The purification component (4) also includes an air outlet (405), a front protective baffle (406) and an air inlet (407). The upper part of the main body (1) is provided with an air outlet (405), and the front end of the main body (1) is provided with a front protective baffle (406), and the air inlet (407) is provided inside the front protective baffle (406).

7. An air purifier employing a plasma sterilization mechanism according to claim 6, characterized in that, The external dimensions of the air guide plate (401) are adapted to the internal dimensions of the main body (1), and the air guide plate (401) is fixedly connected to the main body (1) by bolts.

8. An air purifier employing a plasma sterilization mechanism according to claim 6, characterized in that, The plasma generator (404) is embedded in the main body (1), and the plasma generator (404) and the main body (1) are fixedly connected by bolts.