Air filtering device for oxygen generator

Abstract

The utility model discloses an oxygen -generating machine air filter equipment, including annular installation frame, and the installation frame outside fixedly is equipped with sealed sponge, and the filter cavity of installation frame is equipped with first filter layer, second filter layer, third filter layer and fourth filter layer in proper order, first filter layer is established as felt board, second filter layer adopts the composite filter board who is composed of nanometer titanium dioxide and polyvinyl base material, third filter layer includes sealed box, and sealed box is provided with accommodation cavity, and the water absorbent resin is filled in the accommodation cavity, fourth filter layer is composed of activated carbon and the metal organic framework with porous structure, first filter layer is paved with the glass fiber resist lacquer net with porous structure outward, and glass fiber resist lacquer net is detachably fixed mounting on installation frame through positioning structure. Have multistage filtration and improve the effect that water vapor filtration performance, prolong molecular sieve service life.

Description

Technical Field

[0001] This utility model relates to the field of oxygen generator air filter technology, and in particular to an oxygen generator air filtration device. Background Technology

[0002] Oxygen concentrators are mainly used to provide high concentrations of oxygen, thereby improving symptoms of hypoxia and assisting in disease treatment. They are also suitable for daily health care scenarios such as high-altitude adaptation and recovery from high-intensity work. Specific applications cover three major areas: medical treatment, rehabilitation support, and health management, involving various scenarios such as respiratory diseases, cardiovascular and cerebrovascular diseases, and postoperative recovery.

[0003] However, existing molecular sieves in oxygen generators, especially mainstream lithium sieves, are highly sensitive to water vapor. Water molecules easily occupy the adsorption sites of the molecular sieves, leading to reduced oxygen separation efficiency. Furthermore, water molecules have a very strong chemical affinity for the molecular sieve framework, with adsorption strength far exceeding that of nitrogen molecules. Adsorbed water molecules are difficult to completely remove during conventional depressurization desorption cycles, causing the molecular sieve to become continuously "poisoned" and fail. Existing filtration devices are not effective enough at filtering water vapor and urgently need improvement. Utility Model Content

[0004] The purpose of this invention is to provide an air filtration device for an oxygen generator, which has the effect of multi-stage filtration to improve water vapor filtration performance and extend the service life of molecular sieves.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an air filtration device for an oxygen generator, comprising an annular mounting frame, a sealing sponge fixed outside the mounting frame, a filtration cavity opened in the mounting frame, and a first filtration layer, a second filtration layer, a third filtration layer and a fourth filtration layer sequentially arranged from the air inlet end to the air outlet end in the filtration cavity.

[0006] The first filter layer is a felt board; the second filter layer is a composite filter plate made of nano-titanium dioxide and polyethylene substrate; the third filter layer includes a sealed box with a receiving cavity filled with water-absorbing resin. Air vents are provided on both ends of the sealed box. One end of the receiving cavity communicates with the second filter layer through a corresponding air vent, and the other end communicates with the fourth filter layer through a corresponding air vent. The fourth filter layer is composed of activated carbon and a porous metal-organic framework. A porous glass fiber paint-blocking mesh is laid on the outside of the first filter layer, and the glass fiber paint-blocking mesh is detachably fixed to the mounting frame via a positioning structure.

[0007] By adopting the above technical solution, water vapor enters the filter chamber through the inlet end. The glass fiber paint barrier mesh can filter impurities with larger particle sizes. At the same time, the glass fiber paint barrier mesh itself has strong moisture resistance and hygroscopicity, and can initially adsorb large water vapor molecules. The remaining water vapor then passes through the second, third, and fourth filter layers for adsorption in stages. Clean gas is discharged from the outlet end of the filter chamber. In this invention, the accommodating cavity of the sealed box is filled with water-absorbing resin, which can adsorb and gather the water vapor entering the sealed box. At the same time, the second filter layer, which is composed of nano-titanium dioxide and polyethylene substrate, and the fourth filter layer, which is composed of activated carbon and metal-organic framework, can effectively improve the absorption efficiency of water vapor, thereby avoiding the situation where water vapor is carried by the gas discharged from the outlet end of the filter chamber, causing the molecular sieve to fail and extending the service life of the molecular sieve. In addition, the positioning structure allows the glass fiber paint barrier mesh to be quickly installed and removed on the mounting frame, which has the effect of multi-stage filtration to improve water vapor filtration performance and extend the service life of the molecular sieve.

[0008] A further feature of this invention is that: a plurality of partitions are spaced apart along the height direction in the accommodating cavity, and a filling space for accommodating absorbent resin is formed between adjacent partitions; the mounting frame is provided with a pull-out hole corresponding to the sealing box, and the sealing box is installed in the accommodating cavity by being pulled out through the pull-out hole.

[0009] By adopting the above technical solution, the operator can disassemble and install the sealing box individually through the pull-out hole, which improves the convenience of replacing the sealing box.

[0010] A further feature of this invention is that the partition plate has several through holes, and adjacent filling spaces are connected through the through holes.

[0011] By adopting the above technical solution, the water-absorbing resins in adjacent filling spaces can work together to achieve efficient adsorption of water vapor.

[0012] A further feature of this invention is that the sealing box has several sliding tracks corresponding to the partition, and the partition is installed in the accommodating cavity by being pulled out through the sliding tracks.

[0013] By adopting the above technical solution, the sealing box can be inserted into the predetermined installation position more accurately, preventing water vapor leakage due to improper assembly of the partition.

[0014] A further feature of this invention is that: a handle is provided at the outer end of the partition, one end of the handle is rotatably connected to the partition via a pivot, the handle can rotate relative to the partition between a use state and a storage state, a magnetic element is provided at the end of the handle away from the pivot, and a magnet is provided on the side wall of the sealed box corresponding to the magnetic element, when the handle rotates relative to the partition to the storage state, the magnetic element and the magnet are attracted and engaged.

[0015] By adopting the above technical solution, the operator can flip the handle to the use state and use the handle to quickly pull the partition out of the accommodating cavity. When the partition is pushed into the corresponding slide, the handle can be flipped to the storage state, and the magnetic attraction and magnet attraction will keep the handle in the storage state.

[0016] A further feature of this invention is that the mounting frame is provided with a flexible cover plate made of waterproof material, the flexible cover plate can be flipped and switched between an open state and a closed state relative to the mounting frame, the flexible cover plate is bonded to the mounting frame, and when the flexible cover plate is bonded and fixed to the mounting frame, the flexible cover plate is sealed to the pull hole.

[0017] By adopting the above technical solution, the flexible cover can be sealed to the pull-out hole by double-sided tape or other adhesive methods to prevent water vapor leakage due to gaps between the partition and the mounting frame.

[0018] A further feature of this invention is that the positioning structure includes a buckle and a slot, the buckle is disposed on the glass fiber paint barrier mesh, the slot is formed on the mounting frame, and the buckle engages with the slot.

[0019] By adopting the above technical solution, the glass fiber paint-blocking mesh can be installed more securely on the mounting frame.

[0020] A further feature of this invention is that the glass fiber paint-blocking mesh has several pull rings on the side away from the buckle, and pull ropes are connected to the pull rings.

[0021] By adopting the above technical solution, the operator can pull the rope to drive the pull ring to separate the glass fiber paint barrier mesh from the installation frame.

[0022] A further feature of this invention is that the sealing sponge surrounds the mounting frame, forming a mounting cavity between the sealing sponge and the mounting frame, and the glass fiber paint-blocking mesh is concealed within the mounting cavity.

[0023] By adopting the above technical solution, the overall compactness and aesthetics of this utility model can be improved.

[0024] A further feature of this invention is that the mounting frame has several baffles on its back, with airflow gaps between adjacent baffles.

[0025] By adopting the above technical solution, the baffle can prevent the fourth filter layer from falling out of the filter chamber, and the airflow gap allows dry gas to flow to the molecular sieve.

[0026] In summary, this utility model has the following beneficial effects:

[0027] The filter employs a method where a first, second, third, and fourth filter layer are sequentially arranged within the filter chamber of the mounting frame. The third filter layer includes a sealed box filled with absorbent resin, with vent holes at both ends. A porous fiberglass paint-blocking mesh is laid outside the first filter layer. Water vapor enters the filter chamber through the water inlet. The fiberglass paint-blocking mesh filters out larger particles and possesses strong moisture resistance and absorption, allowing for initial adsorption of large water molecules. The remaining water vapor then passes through the second, third, and fourth filter layers. The filter layers adsorb moisture in stages, and clean gas is discharged from the outlet of the filter chamber. This invention fills the containment cavity of the sealed box with water-absorbing resin, which can adsorb and gather water vapor entering the sealed box. At the same time, a second filter layer composed of nano-titanium dioxide and polyethylene substrate is used, and a fourth filter layer composed of activated carbon and metal-organic framework is used. This can effectively improve the absorption efficiency of water vapor, thereby avoiding the situation where water vapor is carried by the gas discharged from the outlet of the filter chamber, which would cause the molecular sieve to fail and extend the service life of the molecular sieve. It has the effect of multi-stage filtration to improve water vapor filtration performance and extend the service life of molecular sieve. Attached Figure Description

[0028] Figure 1 This is an overall structural diagram of the present invention.

[0029] Figure 2 This is a utility model Figure 1 A longitudinal sectional view.

[0030] Figure 3 This is a utility model Figure 1 A partial view of the transverse section at the snap-fit ​​location.

[0031] Figure 4 This is a utility model Figure 1 Exploded view.

[0032] Figure 5 This is a utility model Figure 1 Another perspective.

[0033] Figure 6 This is a utility model Figure 5 Exploded view.

[0034] Figure 7 This is a structural diagram of the third filter layer of this utility model.

[0035] Figure 8 This is a utility model Figure 7 A longitudinal sectional view.

[0036] Figure 9 This is a utility model Figure 8 A magnified view of a portion of region A in the middle.

[0037] Figure 10 This is a view showing the partition and sealing box of this utility model separated.

[0038] In the diagram: 1. Mounting frame; 11. Filter chamber; 12. Pull-out hole; 13. Flexible cover plate; 131. Double-sided tape; 14. Slot; 15. Baffle strip; 151. Airflow gap; 2. Sealing sponge; 21. Mounting chamber; 3. First filter layer; 4. Second filter layer; 5. Third filter layer; 51. Sealing box; 511. Receiving cavity; 512. Air vent; 513. Slide rail; 514. Magnet; 52. Partition plate; 521. Filling space; 522. Through hole; 523. Handle; 5231. Rotating shaft; 5232. Magnetic suction component; 53. Water-absorbing resin; 6. Fourth filter layer; 7. Fiberglass paint-blocking mesh; 71. Buckle; 72. Pull ring; 721. Pull rope. Detailed Implementation

[0039] The present invention will be further described below with reference to the accompanying drawings.

[0040] An air filtration device for an oxygen concentrator, such as Figures 1-6As shown, the device includes an annular mounting frame 1, with a sealing sponge 2 fixed to the outside of the mounting frame 1. The mounting frame 1 has a filter chamber 11, which, from the air inlet to the air outlet, sequentially comprises a first filter layer 3, a second filter layer 4, a third filter layer 5, and a fourth filter layer 6. The first filter layer 3 is a felt board; the second filter layer 4 is a composite filter plate made of nano-titanium dioxide and polyethylene substrate; the third filter layer 5 includes a sealing box 51, which has a receiving cavity 511 filled with absorbent resin 53. Both ends of the sealing box 51 have vent holes 512. One end of the receiving cavity 511 communicates with the second filter layer 4 through the corresponding vent hole 512, and the other end of the receiving cavity 511 communicates with the fourth filter layer 6 through the corresponding vent hole 512. The filter layer 6 is interconnected; the fourth filter layer 6 is composed of activated carbon and a metal-organic framework with a porous structure; a porous glass fiber paint barrier 7 is laid on the outside of the first filter layer 3, and the glass fiber paint barrier 7 is detachably fixed to the mounting frame 1 through a positioning structure; the sealing sponge 2 surrounds the mounting frame 1, so that the sealing sponge 2 and the mounting frame 1 form a mounting cavity 21, and the glass fiber paint barrier 7 is hidden in the mounting cavity 21, which can improve the overall compactness and aesthetics of this utility model; the mounting frame 1 is provided with several baffles 15 on the back, and an airflow gap 151 is left between adjacent baffles 15. The baffles 15 can prevent the fourth filter layer 6 from falling out of the filter cavity 11, and the airflow gap 151 allows dry gas to flow to the molecular sieve.

[0041] like Figures 2-10As shown, several partitions 52 are spaced apart along the height direction inside the accommodating cavity 511, forming a filling space 521 between adjacent partitions 52 to accommodate the absorbent resin 53. The mounting frame 1 has a pull-out hole 12 corresponding to the sealing box 51, and the sealing box 51 is pulled out and installed in the accommodating cavity 511 through the pull-out hole 12. The operator can remove and install the sealing box 51 individually through the pull-out hole 12, which improves the convenience of replacing the sealing box 51. Several through holes 522 are provided on the partitions 52, and adjacent filling spaces 521 are connected through the through holes 522, so that adjacent filling spaces 521 can be connected. The absorbent resin 53 inside works together to achieve efficient adsorption of moisture. The sealed box 51 has several sliding tracks 513 corresponding to the partition 52. The partition 52 is pulled out and installed in the receiving cavity 511 through the sliding tracks 513, allowing the sealed box 51 to be more accurately inserted into the predetermined installation position, preventing moisture leakage due to improper assembly of the partition 52. A handle 523 is provided at the outer end of the partition 52. One end of the handle 523 is rotatably connected to the partition 52 via a pivot 5231, allowing the handle 523 to rotate relative to the partition 52 between the use state and the storage state. In this switch, the end of the handle 523 furthest from the pivot 5231 is equipped with a magnetic element 5232, and the side wall of the sealed box 51 is equipped with a magnet 514 corresponding to the magnetic element 5232. When the handle 523 is rotated relative to the partition 52 to the storage state, the magnetic element 5232 and the magnet 514 are attracted and engaged. The operator can flip the handle 523 to the use state and use the handle 523 to quickly pull the partition 52 out of the receiving cavity 511. When the partition 52 is pushed into the corresponding slide 513, the handle 523 can be flipped to the storage state, and the magnetic element 5232 and the magnet 514 can be used to engage the magnetic element 5232 and the magnet 514. The adsorption effect keeps the handle 523 in the retracted state; the mounting frame 1 is provided with a flexible cover plate 13 made of waterproof material. The flexible cover plate 13 can be flipped and switched between the open and closed states relative to the mounting frame 1. The flexible cover plate 13 is bonded to the mounting frame 1. When the flexible cover plate 13 is bonded and fixed to the mounting frame 1, the flexible cover plate 13 is sealed to the pull hole 12. The flexible cover plate 13 can be sealed to the pull hole 12 by double-sided tape 131 or other bonding methods to prevent water vapor leakage due to gaps between the partition 52 and the mounting frame 1.

[0042] like Figures 3-6 As shown, the positioning structure includes a buckle 71 and a slot 14. The buckle 71 is located on the fiberglass paint barrier mesh 7, and the slot 14 is located on the mounting frame 1. The buckle 71 and the slot 14 engage to make the fiberglass paint barrier mesh 7 more securely installed on the mounting frame 1. Several pull rings 72 are provided on the side of the fiberglass paint barrier mesh 7 away from the buckle 71. Pull ropes 721 are connected to the pull rings 72. The operator can pull the pull ropes 721 to move the pull rings 72 to separate the fiberglass paint barrier mesh 7 from the mounting frame 1.

[0043] The basic working principle of this utility model is as follows: A first filter layer 3, a second filter layer 4, a third filter layer 5, and a fourth filter layer 6 are sequentially arranged in the filter chamber 11 of the mounting frame 1. The third filter layer 5 includes a sealing box 51 filled with absorbent resin 53. Exhaust holes 512 are opened at both ends of the sealing box 51. A porous glass fiber paint-blocking mesh 7 is laid outside the first filter layer 3. Water vapor enters the filter chamber 11 through the water inlet. The glass fiber paint-blocking mesh 7 can filter impurities with larger particle sizes. Simultaneously, the glass fiber paint-blocking mesh 7 itself has strong moisture resistance and absorbency, enabling preliminary adsorption of large water molecules. The remaining water vapor then passes through the second filter layer. 4. The third filter layer 5 and the fourth filter layer 6 adsorb water in stages, and the clean gas is discharged from the outlet of the filter chamber 11. In this invention, the receiving cavity 511 of the sealed box 51 is filled with water-absorbing resin 53. The water-absorbing resin 53 can adsorb and gather the water vapor entering the sealed box 51. At the same time, the second filter layer 4, which is composed of nano titanium dioxide and polyethylene substrate, and the fourth filter layer 6, which is composed of activated carbon and metal-organic framework, can effectively improve the absorption efficiency of water vapor. This avoids the situation where the gas discharged from the outlet of the filter chamber 11 carries water vapor, causing the molecular sieve to fail, and extends the service life of the molecular sieve. It has the effect of multi-stage filtration to improve water vapor filtration performance and extend the service life of the molecular sieve.

[0044] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. An air filtration device for an oxygen generator, comprising an annular mounting frame (1), characterized in that: The mounting frame (1) is fixed with a sealing sponge (2), and the mounting frame (1) is provided with a filter cavity (11). The filter cavity (11) is provided with a first filter layer (3), a second filter layer (4), a third filter layer (5) and a fourth filter layer (6) in sequence from the air inlet end to the air outlet end. The first filter layer (3) is a felt board; the second filter layer (4) is a composite filter plate made of nano titanium dioxide and polyethylene substrate; the third filter layer (5) includes a sealing box (51), the sealing box (51) has a receiving cavity (511), the receiving cavity (511) is filled with water-absorbing resin (53), the sealing box (51) has air holes (512) on both ends, one end of the receiving cavity (511) is connected to the second filter layer (4) through the corresponding air hole (512), and the other end of the receiving cavity (511) is connected to the fourth filter layer (6) through the corresponding air hole (512); the fourth filter layer (6) is made of activated carbon and a metal-organic framework with a porous structure; a porous glass fiber paint barrier mesh (7) is laid on the outside of the first filter layer (3), and the glass fiber paint barrier mesh (7) is detachably fixed on the mounting frame (1) by a positioning structure.

2. The air filtration device for an oxygen generator according to claim 1, characterized in that: The accommodating cavity (511) is provided with several partitions (52) spaced apart along the height direction. A filling space (521) for accommodating water-absorbing resin (53) is formed between adjacent partitions (52). The mounting frame (1) is provided with a pull hole (12) corresponding to the sealing box (51). The sealing box (51) is installed in the accommodating cavity (511) by being pulled out through the pull hole (12).

3. An air filtration device for an oxygen generator according to claim 2, characterized in that: The partition (52) has a plurality of through holes (522), and adjacent filling spaces (521) are connected through the through holes (522).

4. An air filtration device for an oxygen generator according to claim 2, characterized in that: The sealing box (51) has several slides (513) corresponding to the partition (52), and the partition (52) is installed in the accommodating cavity (511) by being pulled out through the slides (513).

5. An air filtration device for an oxygen generator according to claim 4, characterized in that: The outer end of the partition (52) is provided with a handle (523). One end of the handle (523) is rotatably connected to the partition (52) via a pivot (5231). The handle (523) can rotate relative to the partition (52) between the use state and the storage state. The end of the handle (523) away from the pivot (5231) is provided with a magnetic element (5232). The side wall of the sealed box (51) is provided with a magnet (514) corresponding to the magnetic element (5232). When the handle (523) is rotated relative to the partition (52) to the storage state, the magnetic element (5232) and the magnet (514) are attracted and engaged.

6. An air filtration device for an oxygen generator according to claim 2, characterized in that: The mounting frame (1) is provided with a flexible cover plate (13) made of waterproof material. The flexible cover plate (13) can be flipped and switched between an open state and a closed state relative to the mounting frame (1). The flexible cover plate (13) is bonded to the mounting frame (1). When the flexible cover plate (13) is bonded and fixed to the mounting frame (1), the flexible cover plate (13) is sealed to the pull hole (12).

7. An air filtration device for an oxygen generator according to claim 1, characterized in that: The positioning structure includes a buckle (71) and a slot (14). The buckle (71) is disposed on the glass fiber paint barrier mesh (7), and the slot (14) is opened on the mounting frame (1). The buckle (71) and the slot (14) engage with each other.

8. An air filtration device for an oxygen generator according to claim 7, characterized in that: The glass fiber paint-blocking mesh (7) has several pull rings (72) on the side away from the buckle (71), and pull ropes (721) are connected to the pull rings (72).

9. An air filtration device for an oxygen generator according to claim 1, characterized in that: The sealing sponge (2) is placed around the mounting frame (1) to form a mounting cavity (21) between the sealing sponge (2) and the mounting frame (1), and the glass fiber paint barrier mesh (7) is installed in the mounting cavity (21) in a concealed manner.

10. An air filtration device for an oxygen generator according to claim 1, characterized in that: The mounting frame (1) has several baffles (15) on its back, and airflow gaps (151) are left between adjacent baffles (15).

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