Dust containing type air purifier
By connecting the primary and secondary filters in series and using a discharge structure, the problem of easy clogging of HEPA filters is solved, extending service life and reducing replacement frequency, thus achieving high-efficiency dust holding.
Patent Information
- Application Number
- CN202423286836.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2034-12-30
AI Technical Summary
The HEPA filters in existing air purifiers are prone to clogging due to their small pores, which increases filtration resistance and requires frequent replacement, thus increasing operating costs.
It employs a series of primary and secondary filter elements, with the primary filter element having a pore size of 5-100 μm and the secondary filter element having a pore size of 0.3-1.0 μm. Combined with a discharge structure and a metal perforated plate, charged particles are adsorbed by the filter elements.
Extends filter life, reduces replacement frequency, increases dust holding capacity, and reduces customer replacement costs.
Smart Images
Figure CN223896195U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air purification technology, specifically to a dust-collecting air purifier. Background Technology
[0002] Using an air purifier can improve the air quality. Specifically, an air purifier uses a filter to filter particles in the air, thereby improving the air quality.
[0003] Most air purifiers currently use HEPA filters, which ensures efficient filtration and provides users with cleaner air.
[0004] However, this type of HEPA filter has a high fiber density and small pores (<0.3 μm), resulting in greater filtration resistance. As it is used, particulate matter will clog the pores of the HEPA filter in a short period of time, causing the filtration resistance to increase sharply and the purification capacity to decrease continuously. In order to maintain a good purification capacity, customers are required to replace the filter frequently, which greatly increases the customer's operating costs. Utility Model Content
[0005] In view of this, the present invention provides a dust-collecting air purifier to solve the problem of frequent filter replacement in existing air purifiers.
[0006] In a first aspect, this utility model provides a dust-collecting air purifier, comprising:
[0007] A housing having an airflow channel within it;
[0008] A discharge filtration device is disposed within the airflow channel. The discharge filtration device includes a discharge structure and a filtration structure. The filtration structure includes a primary filter element and a secondary filter element. The pore size of the primary filter element is 5-100 μm, and the pore size of the secondary filter element is 0.3-1.0 μm.
[0009] The dust-holding air purifier provided by this utility model sets the filter structure of the discharge filter device as a series of primary and secondary filters, which can maintain the overall filtration effect. Since the primary and secondary filters have relatively large pores, the overall dust-holding effect is increased, thus improving the problem of frequent filter replacement in air purifiers.
[0010] Optionally, the discharge structure includes a metal orifice plate and a discharge needle, the metal orifice plate having a plurality of openings, and the discharge needle pointing perpendicularly to the openings of the metal orifice plate.
[0011] With the above setup, the particulate matter in the airflow becomes charged after passing through the metal perforated plate and discharge needle, which facilitates the subsequent adsorption of the charged particulate matter by the medium-efficiency filter element.
[0012] Optionally, the discharge needle is provided in a one-to-one correspondence with the opening.
[0013] The above settings enable the particles in the airflow passing through the openings to become more charged, ensuring that the charged particles are subsequently adsorbed.
[0014] Optionally, the opening includes: a round hole, a square hole, and / or a perforated hole.
[0015] Optionally, the aperture ratio of the metal perforated plate is between 50% and 95%.
[0016] The above settings ensure smooth airflow and prevent openings from increasing airflow resistance.
[0017] Optionally, the discharge needle is fixed on a printed circuit board strip.
[0018] The above settings facilitate the supply of electrical energy to the discharge needle.
[0019] Optionally, the filtration structure includes: an upstream metal mesh, a downstream metal mesh, and a primary filter element and a secondary filter element sandwiched between the upstream metal mesh and the downstream metal mesh.
[0020] Optionally, the primary filter element is made of polymer material.
[0021] Optionally, the medium-efficiency filter element is made of glass fiber and / or polytetrafluoroethylene.
[0022] Optionally, an air supply device is also provided in the airflow channel, and the air supply device is located upstream and / or downstream of the discharge filter device.
[0023] By setting the above parameters, the airflow velocity within the airflow channel can be increased, thereby increasing the filtration efficiency. Attached Figure Description
[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0025] Figure 1 This is a front view of a dust-collecting air purifier according to an embodiment of the present utility model.
[0026] Explanation of reference numerals in the attached figures:
[0027] 1. Housing; 2. Airflow channel; 3. Pre-filter; 4. Medium-efficiency filter; 5. Metal perforated plate; 6. Discharge needle; 7. Upstream metal mesh; 8. Downstream metal mesh. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0029] like Figure 1 As shown, this is a specific embodiment of the dust-collecting air purifier provided in this example, including: a housing 1 and a discharge filter device. The housing 1 has an airflow channel 2, and the discharge filter device is disposed in the airflow channel 2. The discharge filter device includes a discharge structure and a filter structure. The filter structure includes a pre-filter 3 and a medium-efficiency filter 4. The pore size of the pre-filter 3 is 5-100 μm, and the pore size of the medium-efficiency filter 4 is 0.3-1.0 μm.
[0030] The dust-holding air purifier provided by this utility model sets the filter structure of the discharge filter device as a series of primary and secondary filters, which can maintain the overall filtration effect. Since the primary and secondary filters have relatively large pores, the overall dust-holding effect is increased, thus improving the problem of frequent filter replacement in air purifiers.
[0031] Specifically, the original HEPA filter had a pore size of <0.3 μm. Although it had a high filtration efficiency, it required frequent replacement. In this embodiment, both the pre-filter 3 and the medium-efficiency filter 4 have larger pore sizes, thus having a larger dust holding capacity and a longer service life compared to the HEPA filter, reducing replacement costs for customers.
[0032] like Figure 1 As shown, in this embodiment, the discharge structure includes a metal perforated plate 5 and a discharge needle 6. The metal perforated plate 5 has a plurality of openings, and the discharge needle 6 is perpendicularly pointed to the openings of the metal perforated plate 5. With the above arrangement, the particulate matter in the airflow becomes charged after passing through the metal perforated plate 5 and the discharge needle 6, thereby facilitating the subsequent adsorption of the charged particulate matter by the pre-filter 3 and the medium-efficiency filter 4.
[0033] It should be noted that the above description of the discharge device is not limiting, and in some alternative embodiments, discharge devices with other structures may also be used.
[0034] like Figure 1 As shown, in this embodiment, the discharge needle 6 is configured in a one-to-one correspondence with the opening. This configuration allows the particles in the airflow passing through the opening to become more charged, ensuring subsequent adsorption of these charged particles. Specifically, the discharge needle 6 charges the passing particles by ionizing surrounding air ions. Of course, the above description is not limiting; in some alternative embodiments, the discharge needle 6 and the opening may not be configured in a one-to-one correspondence.
[0035] It should be noted that, in this embodiment, the opening includes: a round hole, a square hole, and / or a perforated hole. Therefore, this embodiment does not limit the specific structure of the opening.
[0036] like Figure 1 As shown, in this embodiment, the aperture ratio on the metal perforated plate 5 is between 50% and 95%. This setting ensures uniform charging without excessively increasing resistance. Of course, the above description is not limiting; in some alternative embodiments, the aperture ratio of the metal perforated plate 5 can also be other values.
[0037] like Figure 1 As shown, in this embodiment, the discharge needle 6 is fixed to the printed circuit board strip. This arrangement facilitates the supply of power to the discharge needle 6. Specifically, the discharge needle 6 can be made of various metal materials. The discharge needle 6 can be fixed to the printed circuit board strip by soldering, with each discharge needle 6 corresponding one-to-one with an opening in each metal via plate 5, and pointing perpendicularly to the geometric center of the opening. Of course, the above description is not limiting. In some alternative embodiments, the discharge needle 6 can also be fixed to other support structures and then connected to a power source using wires.
[0038] like Figure 1 As shown, in this embodiment, the filtration structure includes: an upstream metal mesh 7, a downstream metal mesh 8, and a primary filter element 3 and a secondary filter element 4 sandwiched between the upstream metal mesh 7 and the downstream metal mesh 8. The upstream metal mesh 7 is connected to the positive terminal of the power supply, the downstream metal mesh 8 is grounded, there is a 1-3 cm gap between the metal mesh 7 and the primary filter element 3, and the downstream metal mesh 8 and the secondary filter element 4 are in close contact. The electric field formed between the two metal meshes polarizes the primary filter element 3 and the secondary filter element 4.
[0039] In this embodiment, the primary filter element 3 can be made of polymer materials such as polyethylene terephthalate (PET), polypropylene (PP), and polyethylene (PE). Of course, the above description is not limiting; in some alternative embodiments, the primary filter element 3 can also be made of other materials with a pore size of 5-100 μm.
[0040] In this embodiment, the medium-efficiency filter element 4 can be made of glass fiber, polytetrafluoroethylene, etc. Of course, the above description is not limiting. In some alternative embodiments, the medium-efficiency filter element 4 can also be made of other materials with a pore size of 0.3-1.0 μm.
[0041] In addition, in some alternative embodiments, an air supply device is also provided within the airflow channel 2, and the air supply device is located upstream and / or downstream of the discharge filter. That is, one air supply device can be provided, located upstream or downstream of the discharge filter, or two air supply devices can be provided, one upstream and one downstream of the discharge filter. Compared with conventional technology, this embodiment can maintain a similar filtration efficiency at higher wind velocities, thereby delivering more clean air in the same amount of time.
[0042] Working principle:
[0043] Particulate matter in the airflow becomes charged after passing through the discharge area of the discharge device, and is then attracted by the opposite charge on the filter element in the polarization area, thus being captured on the filter element in the polarization area. Through this gradient design, the upstream pre-filter element 3 can effectively pre-filter out large particles, while the downstream medium-efficiency filter element 4 can ensure high efficiency.
[0044] Specifically, the dust-holding air purifier of this embodiment was tested at a wind speed of 0.45 m / s. The test ended when the resistance rose to 300 Pa. After the test, the dust holding capacity of the filter reached 872.8 g.
[0045] Under the same conditions, the dust holding capacity of the original HEPA filter was tested and found to be 239.7g.
[0046] By comparing the dust holding capacity data above, it can be seen that in the dust-holding air purifier of this embodiment, because the pores of the two filter elements are larger, they can hold more particulate matter, thus increasing the dust holding capacity of the filter elements and ensuring a long service life.
[0047] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the present invention.
Claims
1. A dust-collecting air purifier, characterized in that, include: A housing (1) having an airflow channel (2) inside; A discharge filtration device is disposed in the airflow channel (2). The discharge filtration device includes a discharge structure and a filtration structure. The filtration structure includes a primary filter element (3) and a secondary filter element (4). The pore size of the primary filter element (3) is 5-100 μm, and the pore size of the secondary filter element (4) is 0.3-1.0 μm.
2. The dust-collecting air purifier according to claim 1, characterized in that, The discharge structure includes a metal orifice plate (5) and a discharge needle (6). The metal orifice plate (5) has several openings, and the discharge needle (6) is perpendicular to the openings of the metal orifice plate (5).
3. The dust-collecting air purifier according to claim 2, characterized in that, The discharge needle (6) is set in a one-to-one correspondence with the opening.
4. The dust-collecting air purifier according to claim 2, characterized in that, The opening includes: round hole, square hole and / or flower hole.
5. The dust-collecting air purifier according to claim 2, characterized in that, The perforation rate on the metal perforated plate (5) is between 50% and 95%.
6. The dust-collecting air purifier according to claim 2, characterized in that, The discharge needle (6) is fixed on the printed circuit board strip.
7. The dust-collecting air purifier according to claim 1, characterized in that, The filtration structure includes: an upstream metal mesh (7), a downstream metal mesh (8), and a primary filter element (3) and a secondary filter element (4) sandwiched between the upstream metal mesh (7) and the downstream metal mesh (8).
8. The dust-collecting air purifier according to claim 7, characterized in that, The primary filter element (3) is made of polymer material.
9. The dust-collecting air purifier according to claim 8, characterized in that, The medium-efficiency filter element (4) is made of glass fiber and / or polytetrafluoroethylene.
10. The dust-collecting air purifier according to any one of claims 1-9, characterized in that, An air supply device is also provided in the airflow channel (2), and the air supply device is located upstream and / or downstream of the discharge filter device.