A multiple cyclone high efficiency dust and gas filter based on the principle of a cyclone dust collector

Abstract

This utility model discloses a multi-cyclone high-efficiency dust filter based on the principle of a cyclone dust collector, aiming to improve the dust separation efficiency and filtration effect of vacuum cleaners. The filter mainly consists of a filter frame cover, a filter frame, a filter inner liner, and a filter frame base. The filter frame body is divided into a sealing section and a filter hole section. The sealing section has an L-shaped baffle at the top, forming a primary air inlet with an inward mounting ring. The filter hole section has square filter holes with filter screens. The filter inner liner is installed inside the filter frame, with a secondary air inlet at the upper end and the lower end placed inside the filter frame base. The inner liner cylinder includes a straight-wall section and a variable-diameter section; the inner diameter of the straight-wall section remains constant, while the inner diameter of the variable-diameter section gradually decreases. In addition, the filter is equipped with a HEPA filter holder, installed on top of the filter frame. Through optimized design, this filter achieves three-stage cyclone separation, significantly improving the separation efficiency of small-diameter particles (such as PM2.5), reducing noise, and enhancing the user experience.

Description

Technical Field

[0001] This utility model relates to the technical field of dust and gas filters, specifically a multi-cyclone high-efficiency dust and gas filter based on the principle of a cyclone dust collector. Background Technology

[0002] Traditional single-cone filtration systems in vacuum cleaners are inefficient at separating small particles (such as PM2.5), and the cones are prone to clogging, leading to poor filtration, reduced dust cup utilization, and decreased vacuum cleaner performance. Furthermore, existing single-cone filters are relatively bulky, further limiting the effective volume utilization of the dust cup. To address these issues, this invention proposes a multi-cyclone high-efficiency dust filter based on the working principle of a cyclone dust collector. Through optimized structural design, it not only improves dust-air separation efficiency but also significantly saves space, making it particularly suitable for handheld vacuum cleaners and other applications with strict space and cost constraints. Utility Model Content

[0003] The purpose of this invention is to provide a multi-cyclone high-efficiency dust and gas filter based on the principle of a cyclone dust collector, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multi-cyclone high-efficiency dust filter based on the principle of a cyclone dust collector, the filter comprising:

[0005] The filter holder cover is a cylindrical structure with an outwardly extending cover mounting ring at the top;

[0006] The filter frame has an outwardly extending frame mounting ring at the top and an inwardly extending mounting ring at the bottom. Between the top and bottom is a cylindrical main body. The upper part of the main body is a sealing section, and the lower part is a filter hole section. The upper part of the sealing section is provided with an L-shaped baffle. The horizontal plate of the L-shaped baffle is arc-shaped, and its inner side is integrally connected to the outer wall of the sealing part. The L-shaped baffle and the inward mounting ring at the top form a primary air inlet. The primary air inlet is connected to the dust rod interface of the vacuum cleaner. The filter hole section has several filter holes spaced around its periphery.

[0007] The filter inner liner is a cylindrical structure with an outwardly extending inner liner mounting ring at the top. It is installed inside the filter frame body. Several secondary air inlets are provided around the upper periphery of the cylinder, and the lower end of the cylinder is located inside the cylinder of the filter frame base.

[0008] The filter frame base is a cylindrical structure with an outwardly extending base mounting ring at the top, and its top is installed at the bottom of the filter frame.

[0009] Preferably, the length of the horizontal plate of the L-shaped baffle is greater than the length of the primary air inlet.

[0010] Preferably, the periphery of the filter section is provided with a plurality of square filter holes, and a filter screen is provided on the filter holes.

[0011] Preferably, the filter inner liner includes an upper straight-wall section and a lower variable-diameter section. The inner diameter of the straight-wall section remains constant, while the inner diameter of the variable-diameter section gradually decreases in the direction from the top to the bottom.

[0012] Preferably, the straight wall section of the filter inner liner is at the same height as the sealing section of the filter frame.

[0013] Preferably, the mounting ring of the filter frame base is shaped like a brim.

[0014] Preferably, it also includes a HEPA filter holder, which is located above the filter holder cover and installed on the top of the filter holder.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model utilizes a split-type dust filter design, creating three cyclones of incoming air in different functional areas. First, the airflow forms a first cyclone on the outer wall of the sealed section, initially separating large particles. These particles, under centrifugal force, fall through the filter holes into the dust collection port. Next, small particles are carried by the airflow into the cavity formed by the inner wall of the filter frame's straight wall section and the outer wall of the filter liner, forming a second cyclone and further separating smaller particles. Finally, the airflow enters through the air inlet of the filter liner into the cavity formed by the cylinder of the filter frame's top cover and the interior of the filter frame's straight wall section, forming a third cyclone and completing the final filtration. This process not only significantly improves the separation efficiency for small-diameter particles (such as PM2.5) but also reduces reliance on post-filters, extending the lifespan of the HEPA filter. Simultaneously, the optimized airflow path design reduces overall noise and enhances the user experience. Attached Figure Description

[0017] Figure 1 This is an exploded view of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0019] In the diagram: 1. HEPA filter holder; 2. Filter holder top cover; 3. Filter inner liner; 31. Straight wall section; 311. Secondary air inlet; 32. Variable diameter section; 4. Filter holder; 41. Frame mounting ring; 42. Enclosed section; 420. Primary air inlet; 421. Horizontal plate; 43. Filter hole section; 431. Filter hole; 44. Inward mounting ring; 5. Filter holder base frame. Detailed Implementation

[0020] The technical solution of one embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0021] Please see Figure 1-2This utility model provides a multi-cyclone high-efficiency dust filter based on the principle of a cyclone dust collector, the filter comprising:

[0022] The filter frame cover 2 is a cylindrical structure with an outwardly extending cover mounting ring at the top; the filter frame 4 has an outwardly extending frame mounting ring 41 at the top and an inwardly extending mounting ring 44 at the bottom. Between the top and bottom is a cylindrical body. The upper part of the body is a sealing section 42, and the lower part is a filter hole section 43. The upper part of the sealing section 42 is provided with an L-shaped baffle. The horizontal plate 421 of the L-shaped baffle is arc-shaped, and its inner side is integrally connected to the outer wall of the sealing part. The L-shaped baffle and the inward mounting ring 44 at the top form a primary air inlet 420. The primary air inlet 420 is connected to the dust rod interface of the vacuum cleaner. The filter hole section 43 has a number of filter holes 431 spaced around its periphery.

[0023] The filter inner liner 3 is a cylindrical structure with an outwardly extending inner liner mounting ring at the top. It is installed inside the filter frame 4. Several secondary air inlets 311 are provided around the upper periphery of the cylinder. The lower end of the cylinder is located inside the cylinder of the filter frame base 5.

[0024] The filter frame base 5 is a cylindrical structure with an outwardly extending base mounting ring at the top, and its top is installed at the bottom of the filter frame 4.

[0025] This utility model utilizes a split-type dust filter design to create three cyclones in different functional areas upon entry. First, the airflow forms a first cyclone on the outer wall of the sealed section 42, initially separating large particles. These particles, under centrifugal force, fall through the filter holes 431 into the dust collection port. Next, small particles are carried by the airflow into the cavity formed by the inner wall of the straight wall section 31 of the filter frame 4 and the outer wall of the filter inner liner 3, forming a second cyclone and further separating smaller particles. Finally, the airflow enters through the secondary air inlet 311 of the filter inner liner 3 into the cavity formed by the cylinder of the filter frame cover 2 and the interior of the straight wall section 31 of the filter frame 4, forming a third cyclone and completing the final filtration. This process significantly improves the separation efficiency for small-diameter particles (such as PM2.5).

[0026] In this embodiment, preferably, the length of the transverse plate 421 of the L-shaped baffle is greater than the length of the primary air inlet 420. The greater length of the transverse plate 421 of the L-shaped baffle allows for more effective guidance of the incoming airflow, creating a more stable and stronger cyclone on the outer wall of the sealing section 42. This improves the separation efficiency of large dust particles and reduces the entry of large dust particles into subsequent filtration areas.

[0027] In this embodiment, preferably, the filter section 43 has a plurality of square filter holes 431 spaced around its periphery, and a filter screen is provided on the filter holes 431. The filter section 43 has a plurality of square filter holes 431 and a filter screen is provided on the filter holes 431. The filter screen can be a stainless steel filter screen with dense holes. This design increases the surface area of ​​the filter holes 431, improves the filtration accuracy, and can more effectively intercept and separate small-diameter particles, further improving the filter's separation efficiency for fine particles. At the same time, the large area of ​​square filter holes 431 is also conducive to the formation of an upward cyclone of air.

[0028] In this embodiment, preferably, the filter inner liner 3 includes an upper straight wall section 31 and a lower variable diameter section 32. The inner diameter of the straight wall section 31 remains unchanged, while the inner diameter of the variable diameter section 32 gradually decreases in the direction from the top to the bottom.

[0029] In this embodiment, preferably, the straight wall section 31 of the filter inner liner 3 is at the same height as the sealing section 42 of the filter frame 4. This design ensures a smooth transition and stable flow of air between the straight wall section 31 and the sealing section 42, preventing turbulence at the junction and thus guaranteeing the stability and continuity of the airflow. This further improves the dust-air separation efficiency, allowing the filter to maintain good performance under different operating conditions.

[0030] In this embodiment, preferably, a HEPA filter holder 1 is also included. The HEPA filter holder 1 is located above the filter holder cover 2 and installed on top of the filter holder 4. The HEPA filter can further filter the air after the first three stages of cyclone separation, effectively removing the remaining fine particles and harmful substances, making the filtered air cleaner and achieving higher air quality standards. It also extends the service life of vacuum cleaners and other equipment and reduces maintenance costs.

[0031] In this embodiment, preferably, a HEPA filter holder is also included. The HEPA filter holder is located above the filter holder cover and installed on top of the filter holder. The HEPA filter can further filter the air after the first three stages of cyclone separation, effectively removing remaining fine particles and harmful substances, making the filtered air cleaner and achieving higher air quality standards. It also extends the service life of vacuum cleaners and other equipment and reduces maintenance costs.

[0032] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A multi-cyclone high-efficiency dust filter based on the principle of a cyclone dust collector, characterized in that: The filter includes: The filter holder cover is a cylindrical structure with an outwardly extending cover mounting ring at the top; The filter frame has an outwardly extending frame mounting ring at the top and an inwardly extending mounting ring at the bottom. Between the top and bottom is a cylindrical main body. The upper part of the main body is a sealing section, and the lower part is a filter hole section. The upper part of the sealing section is provided with an L-shaped baffle. The horizontal plate of the L-shaped baffle is arc-shaped, and its inner side is integrally connected to the outer wall of the sealing part. The L-shaped baffle and the inward mounting ring at the top form a primary air inlet. The primary air inlet is connected to the dust rod interface of the vacuum cleaner. The filter hole section has several filter holes spaced around its periphery. The filter inner liner is a cylindrical structure with an outwardly extending inner liner mounting ring at the top. It is installed inside the filter frame body. Several secondary air inlets are provided around the upper periphery of the cylinder, and the lower end of the cylinder is located inside the cylinder of the filter frame base. The filter frame base is a cylindrical structure with an outwardly extending base mounting ring at the top, and its top is installed at the bottom of the filter frame.

2. The multi-cyclone high-efficiency dust filter based on the cyclone dust collector principle according to claim 1, characterized in that: The length of the horizontal plate of the L-shaped baffle is greater than the length of the primary air inlet.

3. A multi-cyclone high-efficiency dust filter based on the principle of a cyclone dust collector according to claim 1, characterized in that: The periphery of the filter section is provided with a number of square filter holes, and a filter screen is provided on the filter holes.

4. A multi-cyclone high-efficiency dust filter based on the principle of a cyclone dust collector according to claim 1, characterized in that: The filter inner cylinder includes an upper straight-wall section and a lower variable-diameter section. The inner diameter of the straight-wall section remains constant, while the inner diameter of the variable-diameter section gradually decreases in the direction from the top to the bottom.

5. A multi-cyclone high-efficiency dust filter based on the principle of a cyclone dust collector according to claim 4, characterized in that: The straight wall section of the filter inner liner is at the same height as the sealing section of the filter frame.

6. A multi-cyclone high-efficiency dust filter based on the principle of a cyclone dust collector according to claim 1, characterized in that: The mounting ring of the filter frame base is shaped like a cap brim.

7. A multi-cyclone high-efficiency dust filter based on the principle of a cyclone dust collector according to claim 1, characterized in that: It also includes a HEPA filter holder, which is located above the filter holder cover and installed on top of the filter holder.

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