Dustproof air inlet structure for oxygen production

By designing a combination of scraper and collection box at the air inlet of the oxygen concentrator, the problem of dust accumulation in the filter structure is solved, achieving efficient dust prevention and easy cleaning, and extending the service life of the filter screen.

CN224462435UActive Publication Date: 2026-07-07HUNAN YUANLI HENGTAI MEDICAL TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUNAN YUANLI HENGTAI MEDICAL TECH CO LTD
Filing Date
2025-08-23
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

The existing oxygen concentrator's air inlet filter structure is prone to dust accumulation after long-term use, which increases air intake resistance, affects the amount of air entering and oxygen production efficiency, and the cleaning process is cumbersome and may damage the filter screen, affecting the sealing performance.

Method used

A dustproof air inlet structure was designed, which includes a filter screen, a scraper, and a collection box. The scraper removes dust from the filter screen and collects it in the collection box. Combined with magnetic fixing and a sloping groove design, efficient dust cleaning and automatic filter screen reset are achieved.

Benefits of technology

It extends the service life of the filter, improves the dust prevention effect and cleaning efficiency of the air inlet, avoids secondary dust pollution, and simplifies the cleaning process.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224462435U_ABST
    Figure CN224462435U_ABST
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Abstract

The utility model provides a dustproof air inlet structure for oxygen making, include: oxygen generator, its one side is provided with air inlet, and the oxygen generator inside is provided with connecting groove, outside frame, its installation is in oxygen generator's one side, and both sides of outside frame inside are provided with the sliding slot, and the top of outside frame inside is provided with the accommodation groove, and the top and bottom of outside frame inside are provided with the horizontal groove, and the bottom of outside frame is provided with the through groove, dustproof subassembly, it includes filter screen, inner frame and scraper, and the outer side of filter screen is installed with inner frame. The utility model discloses through filter screen can intercept the dust impurity in the air, and if the dust of filter screen outside interception is more, the staff through pushing handle, makes the scraper scrape the dust that sticks on filter screen, can make the baffle retract into the connecting groove simultaneously, makes the through groove expose, and the dust that scrapes off can be through the through groove and enter the inside of collection box, thereby can make the service life of filter screen be extended.
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Description

Technical Field

[0001] This utility model relates to the field of oxygen generator technology, specifically to a dustproof air inlet structure for oxygen generation. Background Technology

[0002] In the field of oxygen concentrators, the air inlet is the key channel through which an oxygen concentrator draws in air from the outside, and its air quality directly affects oxygen production efficiency and stable operation of the equipment. If dust, impurities, and other contaminants in the air enter the oxygen concentrator with the airflow, they may not only clog internal components and affect the smooth operation of the oxygen production process, but also shorten the service life of the equipment. Therefore, dust filtration at the air inlet is particularly important.

[0003] Currently, oxygen concentrators typically have a filter structure at the air inlet for initial air interception, and the concentrator also has a dust purifier inside. The impurities intercepted at the air inlet are mostly large dust particles. However, the existing filter structure has the following shortcomings in practical applications: After long-term use, a large amount of dust will accumulate on the surface of the filter screen. If it is not cleaned in time, it will lead to increased air intake resistance, affecting the amount of air entering and thus reducing oxygen production efficiency. Existing cleaning methods mostly require manual disassembly of the filter screen for cleaning, which is cumbersome and may damage the filter screen due to improper operation during the cleaning process. At the same time, frequent disassembly will also affect the clamping strength of the filter screen positioning structure. When the clamping strength decreases, the filter screen will loosen, affecting the air intake sealing. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a dustproof air inlet structure for oxygen production, which can solve the existing problems.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A dustproof air inlet structure for oxygen generation includes:

[0007] An oxygen concentrator has an air inlet on one side and a connecting groove on the inside.

[0008] The outer frame is installed on one side of the oxygen concentrator. The inner sides of the outer frame are equipped with sliding grooves, the top of the inner side of the outer frame is provided with a storage groove, the top and bottom of the inner side of the outer frame are provided with horizontal grooves, and the bottom of the outer frame is provided with a through groove.

[0009] The dustproof assembly includes a filter screen, an inner frame, and a scraper. The inner frame is installed on the outside of the filter screen. Horizontal blocks are provided at the bottom and top of the inner frame. The horizontal blocks are slidably embedded in the inner side of the horizontal groove. Slider blocks are installed on both sides of the scraper. The slider blocks are slidably embedded in the inner side of the sliding groove.

[0010] The collection component includes a horizontal column, a rotating shaft, and a collection box. The horizontal column is located at the bottom of the outer side of the outer frame. Circular grooves are opened on both sides of the horizontal column. The rotating shaft is rotatably inserted through the inner side of the circular groove. The collection box is located on the outer side of the rotating shaft.

[0011] Furthermore, a spring post is installed on one side of the cross block, and one end of the spring post is fixedly connected to one side of the oxygen generator.

[0012] Furthermore, a handle is installed on the middle of the outer side of the scraper, and the scraper is inserted into the inside of the storage groove.

[0013] Furthermore, a baffle is installed at the bottom of the inner frame, and the baffle is slidably embedded inside the connecting groove.

[0014] Furthermore, a torsion spring is provided at the bottom inner side of the circular groove, one end of the torsion spring is fixedly connected to one side of the top of the collection box, the torsion spring is located on the outside of the rotating shaft, a magnet is provided on the other side of the top of the collection box, a connecting door is hinged on one side of the collection box, and an inclined groove is provided at the bottom inner side of the collection box.

[0015] Compared with the prior art, the beneficial effects of this utility model on the dustproof air inlet structure for oxygen generation include:

[0016] 1. By installing a filter screen over the outside of the air inlet, the filter screen can intercept dust and impurities in the air when it enters the oxygen concentrator. If a lot of dust is trapped on the outside of the filter screen, the operator can push the handle to make the scraper remove the dust on the filter screen. At the same time, the scraper will squeeze the filter screen, which will cause the baffle to retract into the connecting groove, exposing the channel. The scraped dust will enter the inside of the collection box through the channel, thus extending the service life of the filter screen.

[0017] 2. When a lot of dust accumulates inside the collection box, the staff pulls down one side of the collection box to detach the magnet from the bottom of the outer frame, and then opens the connecting door. At this time, the dust and impurities inside the collection box will slide out along the inclined groove, making it easier for the staff to transfer the dust and impurities to other places for centralized treatment. After the dust inside the collection box has been transferred, the staff releases the collection box. The elasticity of the torsion spring can drive the collection box to rotate back to its original position, so that the magnet can be attracted to the bottom of the outer frame again, thereby improving the efficiency of dust transfer. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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.

[0019] Figure 1 This is a schematic diagram of the overall structure of a dustproof air inlet structure for oxygen production according to this utility model;

[0020] Figure 2 This is a schematic diagram of the oxygen generator structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the dustproof component structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of this utility model from another perspective;

[0023] Figure 5 This is a partial cross-sectional schematic diagram of the outer frame structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the outer frame structure of this utility model;

[0025] Figure 7 This is a schematic diagram of the filter screen structure of this utility model;

[0026] Figure 8 This is a schematic diagram of the scraper structure of this utility model;

[0027] Figure 9 This is a schematic diagram of the collection box structure of this utility model;

[0028] The diagram shows the following components: 1. Oxygen concentrator; 2. Outer frame; 3. Filter screen; 4. Collection box; 5. Air inlet; 6. Connecting groove; 7. Handle; 8. Connecting door; 9. Slide groove; 10. Horizontal groove; 11. Spring column; 12. Baffle; 13. Inner frame; 14. Inclined groove; 15. Scraper; 16. Storage groove; 17. Through groove; 18. Horizontal column; 19. Circular groove; 20. Torsion spring; 21. Rotating shaft; 22. Horizontal block; 23. Sliding block; 24. Magnet. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. 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.

[0030] like Figure 1 - Figure 9 As shown, this utility model provides a dustproof air inlet structure for oxygen generation, including: an oxygen generator 1, which has an air inlet 5 on one side and a connecting groove 6 on the inner side of the oxygen generator 1.

[0031] The outer frame 2 is installed on one side of the oxygen generator 1. The inner sides of the outer frame 2 are provided with sliding grooves 9. The top side of the inner side of the outer frame 2 is provided with a storage groove 16. The top and bottom of the inner side of the outer frame 2 are provided with horizontal grooves 10. The bottom of the outer frame 2 is provided with a through groove 17.

[0032] The dustproof assembly includes a filter screen 3, an inner frame 13, and a scraper 15. The inner frame 13 is installed on the outside of the filter screen 3. The bottom and top of the inner frame 13 are provided with horizontal blocks 22. The horizontal blocks 22 are slidably embedded in the inner side of the horizontal groove 10. The scraper 15 is equipped with sliders 23 on both sides. The sliders 23 are slidably embedded in the inner side of the sliding groove 9.

[0033] The collection assembly includes a horizontal column 18, a rotating shaft 21, and a collection box 4. The horizontal column 18 is located at the bottom of the outer side of the outer frame 2. Circular grooves 19 are provided on both sides of the horizontal column 18. The rotating shaft 21 is rotatably inserted through the inner side of the circular grooves 19. The collection box 4 is located on the outer side of the rotating shaft 21.

[0034] In the above scheme:

[0035] 1. The filter screen 3 can filter the air entering the air inlet 5, thus making the air entering the oxygen generator 1 through the air inlet 5 purer.

[0036] 2. The scraper 15 can scrape off the dust and impurities on the outside of the filter screen 3, and can also squeeze the filter screen 3 so that the scraped-off dust can fall directly into the collection box 4 through the channel 17, thereby avoiding secondary pollution of the filter screen 3 by the scraped-off dust.

[0037] 3. The inclined groove 14 provided inside the collection box 4 allows the dust to slide out of the collection box 4 quickly when it is necessary to clean the dust accumulated inside the collection box 4, thereby improving the efficiency of dust collection and transfer.

[0038] In this embodiment, a spring post 11 is installed on one side of the horizontal block 22, and one end of the spring post 11 is fixedly connected to one side of the oxygen generator 1.

[0039] In the above scheme: when the inner frame 13 is squeezed by the scraper 15, the horizontal block 22 slides along the horizontal groove 10 towards the oxygen generator 1, and the spring column 11 is compressed and stores force; when the scraper 15 releases the squeeze, the elastic force of the spring column 11 can push the horizontal block 22 to reset, and drive the inner frame 13 and the filter screen 3 back to the initial position.

[0040] In this embodiment, a handle 7 is installed on the middle of the outer side of the scraper 15, and the scraper 15 is inserted into the inner side of the storage groove 16.

[0041] In the above solution: the length and width of the scraper 15 match the size of the storage slot 16. When the scraper 15 is idle, it can be fully inserted into the inside of the storage slot 16 to avoid occupying space or affecting air intake.

[0042] In this embodiment, a baffle 12 is installed at the bottom of the inner frame 13, and the baffle 12 is slidably embedded in the inner side of the connecting groove 6.

[0043] In the above scheme: when the inner frame 13 is in the initial position, the baffle 12 slides into the inner side of the connecting groove 6, which just closes the top of the through groove 17 and prevents the dust in the collection box 4 from drifting back; when the inner frame 13 is squeezed and moved, the baffle 12 retracts from the connecting groove 6 with the inner frame 13 and opens the through groove 17.

[0044] In this embodiment, a torsion spring 20 is provided at the bottom inner side of the circular groove 19. One end of the torsion spring 20 is fixedly connected to one side of the top of the collection box 4. The torsion spring 20 is located on the outside of the rotating shaft 21. A magnet 24 is provided on the other side of the top of the collection box 4. A connecting door 8 is hinged to one side of the collection box 4. An inclined groove 14 is provided at the bottom inner side of the collection box 4.

[0045] In the above scheme: Since the bottom of the outer frame 2 is made of iron, the collection box 4 is fixed in a normal state by the attraction of the magnet 24 to the outer frame 2.

[0046] The collection box 4 is hinged to the front and has a connecting door 8. The edge of the connecting door 8 is equipped with a sealing strip, which can be closed or opened by a buckle to facilitate cleaning of the internal dust. The bottom of the inner side of the collection box 4 is provided with a sloping groove 14. The sloping groove 14 is inclined from the side away from the connecting door 8 to the side of the connecting door 8, so that the dust can slide down naturally along the sloping groove 14, improving cleaning efficiency.

[0047] In this embodiment, when oxygen generator 1 is needed to produce oxygen, air enters the oxygen generator 1 through air inlet 5. Before the air enters air inlet 5, the outer frame 2 completely covers air inlet 5. Through the filtration of filter screen 3, dust and impurities in the air can be blocked outside air inlet 5, thus achieving a good dustproof effect. After the filter screen 3 has been used for a long time, a lot of dust will stick to the outside of the filter screen 3. At this time, the operator can pull down handle 7 to make the horizontal block 22 slide inside the slide groove 9 to achieve the function of filtering dust. The scraper 15 is restricted in its direction of movement, which allows it to scrape away the dust adhering to the filter screen 3. During this process, the scraper 15 compresses the filter screen 3, causing the horizontal block 22 to slide along the horizontal groove 10. This compresses the spring column 11 and simultaneously retracts the baffle 12 into the connecting groove 6, allowing the scraped dust to fall into the collection box 4 through the through groove 17. This extends the service life of the filter screen 3. After the dust on the filter screen 3 is scraped off, the operator pulls the handle. 7. This causes the scraper 15 to slide into the collection slot 16. At this time, the elasticity of the spring column 11 can drive the filter screen 3 and the inner frame 13 back to their original positions. The inner frame 13 can fix the scraper 15 in the position of the collection slot 16. At the same time, the baffle 12 moves back to its original position, thereby sealing the passage 17. This can block impurities in the collection box 4, thus preventing impurities from being scattered back into the air and causing secondary pollution to the filter screen 3. When a lot of dust accumulates in the collection box 4, since the bottom of the outer frame 2 is made of iron, the staff can easily... By pulling the collection box 4, the magnet 24 is detached from the bottom of the outer frame 2. Then, one side of the collection box 4 is rotated at a certain angle, and the connecting door 8 is opened, allowing the dust and impurities inside the collection box 4 to slide out through the inclined groove 14. This makes it easier for the staff to transfer the dust and impurities inside the collection box 4 to other places for centralized treatment. Then, the staff releases the collection box 4, and the elastic force of the torsion spring 20 can drive the collection box 4 to rotate back to its original position, so that the magnet 24 can be re-adsorbed onto the outer frame 2, thereby fixing the position of the collection box 4.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A dustproof air inlet structure for oxygen generation, characterized in that, include: An oxygen generator (1) has an air inlet (5) on one side and a connecting groove (6) on the inside of the oxygen generator (1). The outer frame (2) is installed on one side of the oxygen generator (1). The inner sides of the outer frame (2) are provided with sliding grooves (9). The top side of the inner side of the outer frame (2) is provided with a storage groove (16). The top and bottom sides of the inner side of the outer frame (2) are provided with horizontal grooves (10). The bottom of the outer frame (2) is provided with a through groove (17). The dustproof assembly includes a filter screen (3), an inner frame (13), and a scraper (15). The inner frame (13) is installed on the outside of the filter screen (3). The bottom and top of the inner frame (13) are provided with horizontal blocks (22). The horizontal blocks (22) are slidably embedded in the inner side of the horizontal groove (10). The scraper (15) is equipped with sliders (23) on both sides. The sliders (23) are slidably embedded in the inner side of the groove (9). The collection component includes a horizontal column (18), a rotating shaft (21), and a collection box (4). The horizontal column (18) is located at the bottom of the outer side of the outer frame (2). Circular grooves (19) are provided on both sides of the horizontal column (18). The rotating shaft (21) is rotatably passed through the inner side of the circular groove (19). The collection box (4) is provided on the outer side of the rotating shaft (21).

2. The dustproof air inlet structure for oxygen generation according to claim 1, characterized in that: A spring post (11) is installed on one side of the cross block (22), and one end of the spring post (11) is fixedly connected to one side of the oxygen generator (1).

3. The dustproof air inlet structure for oxygen generation according to claim 2, characterized in that: A handle (7) is installed on the middle of the outer side of the scraper (15), and the scraper (15) is inserted into the inside of the storage groove (16).

4. The dustproof air inlet structure for oxygen generation according to claim 3, characterized in that: A baffle (12) is installed at the bottom of the inner frame (13), and the baffle (12) is slidably embedded in the inner side of the connecting groove (6).

5. The dustproof air inlet structure for oxygen generation according to claim 4, characterized in that: A torsion spring (20) is provided at the bottom of the inner side of the circular groove (19). One end of the torsion spring (20) is fixedly connected to one side of the top of the collection box (4). The torsion spring (20) is located on the outside of the rotating shaft (21). A magnet (24) is provided on the other side of the top of the collection box (4). A connecting door (8) is hinged on one side of the collection box (4). An inclined groove (14) is provided at the bottom of the inner side of the collection box (4).