An oxygen generator of a self-cleaning air filtration system and a method of using the same

Abstract

This invention relates to the field of oxygen concentrator technology, and more particularly to an oxygen concentrator with a self-cleaning air filtration system and its usage method. The system includes a display cover and a housing assembly. The housing assembly is fixedly connected to the bottom of the display cover. A mounting frame assembly is installed inside the housing assembly. A filter screen is fixedly connected to the inside of the mounting frame assembly. A flow control assembly is fixedly connected to the inside of the mounting frame assembly. A fine filter assembly is fixedly connected to the inside of the mounting frame assembly. A movable reset assembly is fixedly connected to the rear end of the fine filter assembly. The housing assembly includes a casing. A square slide rail is opened inside the casing. A servo motor is fixedly connected inside the square slide rail. A threaded rod is fixedly connected to the end of the servo motor's main shaft. A limit sliding column is fixedly connected to the inner side of the right end of the casing. In this invention, the device improves cleaning efficiency, reduces manual intervention, lowers maintenance costs and labor intensity, and avoids the risk of equipment damage caused by manual cleaning.

Description

Technical Field

[0001] This invention relates to the field of oxygen generator technology, specifically to an oxygen generator with a self-cleaning air filtration system and its usage method. Background Technology

[0002] A self-cleaning air filtration system oxygen concentrator is a medical device with an automatic cleaning function designed to improve the filtration efficiency of the oxygen concentrator and reduce maintenance costs. This type of oxygen concentrator improves overall oxygen production efficiency and performance by integrating a specific self-cleaning mechanism to keep the air filter clean. Oxygen concentrators filter the air to remove dust, impurities, nitrogen, carbon dioxide, and other harmful substances, thereby improving the purity and quality of oxygen and ensuring that the produced oxygen meets medical or industrial standards. In conventional maintenance procedures, ensuring the continued effectiveness of the filter requires regular cleaning or replacement. This often involves manual cleaning or replacement of parts, leading to increased maintenance costs and additional workload for operators. Therefore, this paper proposes an oxygen generator with a self-cleaning air filtration system and its usage method to address the above issues. Summary of the Invention

[0003] The purpose of this invention is to provide an oxygen generator with a self-cleaning air filtration system and its usage method, in order to solve the problem that manual cleaning or replacement of parts leads to increased maintenance costs and additional workload for operators.

[0004] To achieve the above objectives, the present invention provides the following technical solution: An oxygen generator with a self-cleaning air filtration system and its method of use, comprising a display cover and a housing assembly, wherein the housing assembly is fixedly connected to the bottom end of the display cover, a mounting frame assembly is installed inside the housing assembly, a filter screen is fixedly connected to the inside of the mounting frame assembly, a flow control assembly is fixedly connected to the inside of the mounting frame assembly, a fine filter assembly is fixedly connected to the inside of the mounting frame assembly, and a movable reset assembly is fixedly connected to the rear end of the fine filter assembly, the housing assembly includes a casing, a square slide rail is formed inside the casing, a servo motor is fixedly connected to the inside of the square slide rail, a threaded rod is fixedly connected to the end of the servo motor spindle, a limit slide post is fixedly connected to the inside of the right end of the casing, a support frame is fixedly connected to the inside of the casing, an air intake cylinder is fixedly connected to the inside of the support frame, a stabilizing support plate is fixedly connected to the lower end of the air intake cylinder, and a rubber [unclear - possibly a component or material] is fixedly connected to the front end of the air intake cylinder. The sealing ring and the mounting frame assembly include a metal outer frame. An internally threaded sliding plate is fixedly connected to the left side of the metal outer frame, and an internally straight-hole sliding plate is fixedly connected to the right side of the metal outer frame. A straight slide rail is provided on the inner side of the internally straight-hole sliding plate. A stepper motor is fixedly connected to the inner side of the upper end of the metal outer frame, and an eccentric wheel is fixedly connected to the end of the stepper motor spindle. An air inlet is provided on the inner side of the rear end of the metal outer frame, and multiple exhaust channels are provided on the inner side of the lower end of the metal outer frame. A small fan is fixedly connected to the inner side of the lower end of the metal outer frame. The moving reset assembly includes an internally fixed post with a double-groove on its inner side. A stop plate is slidably connected to the inner side of the double-groove at the beginning of the internally fixed post. A protruding rod is fixedly connected to one side of the stop plate, and a reset spring is fixedly connected to one side of the stop plate. The internally threaded sliding plate slides inside a square slide rail on the housing. The outer side of the internally fixed post is fixedly connected to the inner side of the rear end of the metal outer frame.

[0005] As a further optimization of the present invention, the flow control component includes a partition plate, a flow control port is provided on the inner side of the partition plate, a solenoid valve is installed on the inner side of the flow control port, the outer side of the partition plate is fixedly connected to the inner side of the metal frame, the flow control port is cylindrical in shape, the number of flow control ports corresponds one-to-one with the number of solenoid valves, and the partition plate is located at the rear end of the small fan.

[0006] As a further optimization of the present invention, the fine filter component includes a soft film, an internal mounting groove is formed on the inner side of the soft film, a multi-layer filter plate is fixedly connected to the internal mounting groove of the soft film, a dust collection groove is formed on the inner side of the multi-layer filter plate, and capillary pores are formed on the inner side of the multi-layer filter plate.

[0007] As a further optimization of the present invention, the outer side of the soft film is fixedly connected to the inner side of the metal frame, the dust collection trough is rectangular in shape, the dust collection trough passes through the lower end of the multi-layer filter plate, the soft film is away from the dust collection trough, and the rear end of the multi-layer filter plate is fixedly connected to the front end of the protruding rod.

[0008] As a further optimization of the present invention, the inner side of the housing is hollow, the square slide is rectangular in shape, the square slide is located on the inner side of the left end and the inner side of the right end of the housing, the outer side of the threaded rod is rotatably connected to the inner side of the housing, the square slide is opened through the front end of the housing, and the outer side of the threaded rod is spirally fitted with the inner side of the rear part of the internal threaded slide plate.

[0009] As a further optimization of the present invention, the limiting slide post is cylindrical in shape, and the outer side of the limiting slide post is in contact with the inner side of the straight slide track opened by the inner straight hole slide plate. The inner straight hole slide plate slides and is in contact with the inner side of the square slide track at the right end.

[0010] As a further optimization of the present invention, the inner side of the front end of the metal outer frame is a through structure, the internal thread slide plate and the internal straight hole slide plate are slotted rectangular bodies, the straight slide rail passes through the rear part of the internal straight hole slide plate, the inner side of the rear part of the internal thread slide plate is provided with a threaded hole, the metal outer frame slides inside the front end of the housing, and the rear end of the metal outer frame is in contact with the front end of the rubber sealing ring.

[0011] As a further optimization of the present invention, the following features are provided: the air inlet is connected to the inside of the air intake cylinder; the outer side of the eccentric wheel is attached to the rear end of the multi-layer filter plate; an installation hole is provided on the inner side of the rear end of the metal frame; the upper part of the multi-channel waste discharge channel penetrates the inner side of the metal frame; the through hole at the upper end of the multi-channel waste discharge channel is connected to the inside of the dust collection trough; and the through hole at the front end of the multi-channel waste discharge channel is connected to the inside of the small fan.

[0012] As a further optimization of the present invention, the inner hole fixing post is shaped as a slotted cylinder, the number of inner hole fixing posts corresponds one-to-one with the number of protruding rods, the front end of the reset spring is fixedly connected to the front end of the double column groove of the inner hole fixing post, and the shape of the stop plate and the protruding rod is cylindrical.

[0013] A method for using an oxygen generator with a self-cleaning air filtration system. S1: When automatically removing impurities from the fine filter components and filter screen, the stepper motor drives the eccentric wheel to rotate. The eccentric wheel continuously impacts the multi-layer filter plate, causing it to move. This movement deforms the soft plastic sheet fixed to the outside via the built-in mounting groove. The soft plastic sheet vibrates under the action of the eccentric wheel, dislodging impurities from the dust collection trough within the filter plate. The impurities fall into the lower part of the metal frame. Simultaneously, the movement of the filter plate causes the protruding rod to move, with its outer side fitting against the inner side of the double-column groove in the inner hole fixing post. When the baffle plate moves, it causes the return spring to deform. Under the elastic tension of the return spring, the convex rod can drive the multi-layer filter plate to move towards the eccentric wheel. When removing impurities from the lower end of the metal frame, the small fan is started. The small fan draws air from the multi-pass exhaust channel. At this time, the impurities in the dust collection trough enter the small fan from the multi-pass exhaust channel and are blown out from the small fan. When blowing air, the solenoid valve is closed. At this time, the gas is concentrated and blown out from the through holes inside the filter screen. S2: When filtering impurities in the control system, an air pump is installed inside the air intake cylinder. Under the action of the air pump inside the air intake cylinder, external air enters through the openings inside the filter screen. The filter screen performs preliminary filtration of impurities in the air and can filter large-diameter impurities. At this time, the solenoid valve is in the open state, and the gas enters from the control port and contacts the multi-layer filter plate. The multi-layer filter plate has multiple layers of filters at the bottom, and the capillary pores inside the multi-layer filter are arranged alternately. The multi-layer filter plate can filter small particulate impurities in the air. S3: When installing the mounting frame assembly and its internal devices, align the metal outer frame with the inner groove at the front of the housing, and simultaneously slide the internal threaded slide plate and the internal straight hole slide plate inside the two square slide tracks. When the threaded hole on the inner side of the internal threaded slide plate is spirally engaged with the outer side of the threaded rod, and the limiting slide post is inside the straight slide track of the internal straight hole slide plate, the servo motor drives the threaded rod to rotate. The outer side of the threaded rod rotates and connects to the inner side of the housing. A stabilizing block is set at the middle of the square slide track. The rotation of the threaded rod drives the internal threaded slide plate, which is spirally engaged on the outer side, to move backward. The movement of the internal threaded slide plate drives the metal outer frame and the internal straight hole slide plate to move. When the front end of the metal outer frame is flush with the front end of the housing, the rear end of the metal outer frame is engaged with the front end of the rubber sealing ring, and the rubber sealing ring deforms.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, through the stepper motor, eccentric wheel, fine filter assembly and multi-layer filter plate, the impact and vibration of the eccentric wheel on the multi-layer filter plate effectively shakes off the impurities on the filter screen, and the impurities are discharged by the air extraction function of the small fan, which significantly improves the cleaning efficiency. This automated cleaning process reduces manual intervention, lowers maintenance costs and labor intensity, and avoids the risk of equipment damage caused by manual cleaning. 2. In this invention, the air intake cylinder, filter screen and multi-layer filter plate are designed to achieve dual filtration of large diameter and small particulate impurities in the air. The preliminary filtration of the filter screen and the multi-layer filtration of the multi-layer filter plate are combined to ensure that the air entering the air intake cylinder reaches high purity, effectively extending the service life of the internal components of the oxygen generator and ensuring the breathing safety of the user. 3. In this invention, the precise positioning and installation of the metal outer frame is achieved by setting the internal threaded slide plate, the internal straight hole slide plate, the mounting frame assembly, the servo motor and the threaded rod. The deformation sealing effect of the rubber sealing ring ensures that air will not leak out. At the same time, this design also facilitates disassembly and maintenance in the later stage, improving the maintainability and ease of operation of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the housing structure of the present invention; Figure 3 This is a schematic diagram of the rubber sealing ring structure of the present invention; Figure 4 This is a schematic diagram of the metal frame structure of the present invention; Figure 5 This is a schematic diagram of the eccentric wheel structure of the present invention; Figure 6 This is a schematic diagram of the flow control component structure of the present invention; Figure 7 This is a schematic diagram of the fine filtration component structure of the present invention; Figure 8 This is a schematic diagram of the structure of the movable reset component of the present invention.

[0016] In the image: 1. Show cover plate; 2. Outer casing assembly; 21. Housing; 22. Servo motor; 23. Threaded rod; 24. Square slide rail; 25. Limiting slide column; 26. Support frame; 27. Air intake cylinder; 28. Stabilizing support plate; 29. ​​Rubber sealing ring; 3. Mounting frame assembly; 31. Metal outer frame; 32. Internally threaded slide plate; 33. Internally straight hole slide plate; 34. Straight slide rail; 35. Stepper motor; 36. Eccentric wheel; 37. Air inlet; 38. Multi-channel exhaust duct; 39. Small fan; 4. Filter screen; 5. Flow control assembly; 51. Partition plate; 52. Flow control port; 53. Solenoid valve; 6. Fine filter assembly; 61. Flexible film; 62. Built-in mounting slot; 63. Multi-layer filter plate; 64. Dust collection tray; 65. Capillary pores; 7. Moving reset assembly; 71. Inner hole fixing post; 72. Double column groove; 73. Protruding rod; 74. Reset spring; 75. Stop post plate. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0019] Please see Figure 1-8 The present invention provides a technical solution: An oxygen generator with a self-cleaning air filtration system and its method of use, comprising a display cover 1 and a housing assembly 2, wherein the housing assembly 2 is fixedly connected to the bottom end of the display cover 1, a mounting frame assembly 3 is mounted inside the housing assembly 2, a filter screen 4 is fixedly connected to the inside of the mounting frame assembly 3, a flow control assembly 5 is fixedly connected to the inside of the mounting frame assembly 3, a fine filter assembly 6 is fixedly connected to the inside of the mounting frame assembly 3, and a movable reset assembly 7 is fixedly connected to the rear end of the fine filter assembly 6, and the housing assembly 2 includes a casing 21. A square slide rail 24 is provided on the inner side of the housing 21. A servo motor 22 is fixedly connected to the inner side of the square slide rail 24. A threaded rod 23 is fixedly connected to the end of the main shaft of the servo motor 22. A limit slide post 25 is fixedly connected to the inner side of the right end of the housing 21. A support frame 26 is fixedly connected to the inner side of the housing 21. An air intake cylinder 27 is fixedly connected to the inner side of the support frame 26. A stabilizing support plate 28 is fixedly connected to the lower end of the air intake cylinder 27. A rubber sealing ring 29 is fixedly connected to the front end of the air intake cylinder 27. (The last sentence appears to be incomplete and possibly refers to a mounting frame.) Component 3 includes a metal frame 31. A threaded slide plate 32 is fixedly connected to the left side of the metal frame 31, and a straight-hole slide plate 33 is fixedly connected to the right side of the metal frame 31. A straight slide rail 34 is provided on the inner side of the straight-hole slide plate 33. A stepper motor 35 is fixedly connected to the inner side of the upper end of the metal frame 31. An eccentric wheel 36 is fixedly connected to the end of the stepper motor 35's spindle. An air inlet 37 is provided on the inner side of the rear end of the metal frame 31. A multi-channel wastewater discharge channel 38 is provided on the inner side of the lower end of the metal frame 31. A small fan 39 is fixedly connected to the inner side of the end. The movable reset assembly 7 includes an inner hole fixing post 71. A double column groove 72 is opened on the inner side of the inner hole fixing post 71. A baffle plate 75 is slidably connected to the inner side of the double column groove 72 starting from the inner hole fixing post 71. A protruding rod 73 is fixedly connected to one side of the baffle plate 75. A reset spring 74 is fixedly connected to one side of the baffle plate 75. The internal thread sliding plate 32 slides inside the square slide track 24 opened in the housing 21. The outer side of the inner hole fixing post 71 is fixedly connected to the inner side of the rear end of the metal outer frame 31.

[0020] As a further implementation of this solution, the flow control component 5 includes a partition plate 51, with a flow control port 52 opened on the inner side of the partition plate 51. A solenoid valve 53 is installed on the inner side of the flow control port 52. The outer side of the partition plate 51 is fixedly connected to the inner side of the metal outer frame 31. The shape of the flow control port 52 is cylindrical. The number of flow control ports 52 corresponds one-to-one with the number of solenoid valves 53. The partition plate 51 is located at the rear end of the small fan 39, which ensures the uniformity and efficiency of impurity discharge. At the same time, the location of the partition plate 51 at the rear end of the small fan 39 optimizes the layout of the overall structure and improves the space utilization and ease of operation of the impurity discharge system. As a further implementation of this solution, the fine filter assembly 6 includes a soft sheet 61, with an internal mounting groove 62 on the inner side of the soft sheet 61. A multi-layer filter plate 63 is fixedly connected to the internal mounting groove 62 of the soft sheet 61. A dust collection groove 64 is provided on the inner side of the multi-layer filter plate 63, and capillary pores 65 are provided on the inner side of the multi-layer filter plate 63, providing an efficient channel for the shaking and discharge of impurities. Impurities can fall smoothly from the inside of the multi-layer filter plate 63 and be discharged through the dust collection groove 64, reducing the retention of impurities inside the equipment and improving cleaning efficiency. As a further implementation of this solution, the outer side of the soft film 61 is fixedly connected to the inner side of the metal frame 31. The dust collection trough 64 is rectangular in shape and passes through the lower end of the multi-layer filter plate 63. The soft film 61 is away from the dust collection trough 64. The rear end of the multi-layer filter plate 63 is fixedly connected to the front end of the protruding rod 73 to avoid the accumulation of impurities inside the equipment. At the same time, the fixed connection between the rear end of the multi-layer filter plate 63 and the front end of the protruding rod 73 ensures the stability and reliability of the impurity discharge process. As a further implementation of this solution, the inner side of the housing 21 is hollow, and the square slide 24 is rectangular in shape. The square slide 24 is located on the inner side of the left end and the inner side of the right end of the housing 21. The outer side of the threaded rod 23 is rotatably connected to the inner side of the housing 21. The square slide 24 is opened through the front end of the housing 21. The outer side of the threaded rod 23 is spirally fitted with the inner side of the rear of the internal threaded slide plate 32, which provides convenience for the installation and maintenance of the equipment, realizes the stable fixation and precise adjustment of the internal components of the equipment, and improves the installation efficiency and stability of the equipment. As a further implementation of this solution, the limiting slide 25 is cylindrical in shape. The outer side of the limiting slide 25 fits against the inner side of the straight slide 34 opened by the inner straight hole slide plate 33. The inner straight hole slide plate 33 slides and fits against the inner side of the square slide 24 at the right end, which ensures the stability of the inner straight hole slide plate 33 during movement and improves the operating accuracy of the equipment. As a further implementation of this solution, the inner side of the front end of the metal outer frame 31 is a through structure, the internal thread slide plate 32 and the internal straight hole slide plate 33 are slotted rectangular bodies, the straight slide 34 passes through the rear of the internal straight hole slide plate 33, and the inner side of the rear of the internal thread slide plate 32 is provided with a threaded hole. The metal outer frame 31 slides inside the front end of the housing 21, and the rear end of the metal outer frame 31 fits against the front end of the rubber sealing ring 29, which provides flexibility for the installation and positioning of the equipment and achieves effective sealing against air leakage. As a further implementation of this solution, the air inlet 37 is connected to the inside of the suction air inlet cylinder 27, the outer side of the eccentric wheel 36 is attached to the rear end of the multi-layer filter plate 63, the inner side of the rear end of the metal frame 31 is provided with an installation hole, the upper part of the multi-pass exhaust channel 38 penetrates the inner side of the metal frame 31, the through hole at the upper end of the multi-pass exhaust channel 38 is connected to the inside of the dust collection trough 64, and the through hole at the front end of the multi-pass exhaust channel 38 is connected to the inside of the small fan 39, which improves the efficiency of impurity discharge. At the same time, the connection between the through hole at the front end of the multi-pass exhaust channel 38 and the inside of the small fan 39 provides a guarantee for the final discharge of impurities. As a further implementation of this solution, the inner hole fixing column 71 is a slotted cylinder, and the number of inner hole fixing columns 71 corresponds one-to-one with the number of protruding rods 73. The front end of the return spring 74 is fixedly connected to the front end of the double column groove 72 opened in the inner hole fixing column 71. The baffle plate 75 and the protruding rod 73 are both cylindrical, which provides a guarantee for the stability and operating accuracy of the equipment, further improves the structural strength and stability of the equipment, and ensures the reliability of the equipment during operation.

[0021] Workflow: When automatically removing impurities from the fine filter assembly 6 and filter screen 4, the stepper motor 35 is activated. The stepper motor 35 drives the eccentric wheel 36 to rotate, and the eccentric wheel 36 continuously impacts the multi-layer filter plate 63. Under the push of the eccentric wheel 36, the multi-layer filter plate 63 moves. The movement of the multi-layer filter plate 63 causes the outer flexible rubber sheet 61, which is fixedly connected to the outside through the built-in mounting groove 62, to deform. The flexible rubber sheet 61 serves to seal between the multi-layer filter plate 63 and the metal outer frame 31, preventing the lower end of the multi-layer filter plate 63 from deforming. Impurities are removed from inside the metal frame 31. Meanwhile, the soft plastic sheet 61, being a soft plastic, does not hinder the normal movement of the multi-layer filter plate 63. Under the action of the eccentric wheel 36, the multi-layer filter plate 63 vibrates. This vibration dislodges impurities from the dust collection trough 64 within the multi-layer filter plate 63, causing them to fall into the lower part of the metal frame 31. Simultaneously, the movement of the multi-layer filter plate 63 drives the protruding rod 73 to move. The outer side of the protruding rod 73 is in contact with the inner side of the double-column groove 72 in the inner hole fixing post 71. The movement of the baffle plate 75, along with the action of the protruding rod 73, the baffle plate 75, and the inner hole fixing post 71, limits the movement direction of the multi-layer filter plate 63. Simultaneously, the protruding rod 73 supports the multi-layer filter plate 63. When the baffle plate 75 moves, it causes the return spring 74 to deform. Under the elastic tension of the return spring 74, the protruding rod 73 can keep the multi-layer filter plate 63 moving towards the eccentric wheel 36, thus achieving continuous cleaning of impurities at the upper end of the multi-layer filter plate 63. This is achieved by cleaning the lower part of the metal frame 31. When removing impurities from inside the dust collection trough 64, the small fan 39 is started. The small fan 39 draws air from inside the multi-pass dust removal channel 38. At this time, the impurities inside the dust collection trough 64 enter the small fan 39 from the multi-pass dust removal channel 38 and are blown out from inside the small fan 39. When blowing air, the solenoid valve 53 is in the closed state. At this time, the gas is concentrated and blown out from the through holes inside the filter screen 4, which cleans the impurities inside the filter screen 4 and also discharges the impurities at the bottom of the dust collection trough 64, improving the cleaning efficiency of the device and reducing economic expenses and labor intensity. When filtering impurities in the control system, an air intake cylinder 27 is equipped with an air pump. Under the action of the air pump inside the air intake cylinder 27, external air enters through the opening inside the filter screen 4. The filter screen 4 performs a preliminary filtration of impurities in the air and can filter large-diameter impurities. At this time, the solenoid valve 53 is in the open state, and the gas enters from the control port 52 and comes into contact with the multi-layer filter plate 63. The multi-layer filter plate 63 has multiple layers of filtration at the bottom, and the capillary pores 65 inside the multi-layer filter are arranged alternately. The multi-layer filter plate 63 can filter small particulate impurities in the air, improve the air purification effect, ensure that the air entering the air intake cylinder 27 is in a crystalline state, protect the internal components of the oxygen generator from damage, extend the equipment life, and ensure the respiratory safety and health of the user. When installing the mounting frame assembly 3 and its internal components, align the metal outer frame 31 with the internal groove at the front end of the housing 21. Simultaneously, slide the internally threaded slide plate 32 and the internally straight-hole slide plate 33 within the two square slide tracks 24. When the threaded hole on the inner side of the internally threaded slide plate 32 is spirally engaged with the outer side of the threaded rod 23, and the limiting slide post 25 is positioned within the straight slide track 34 of the internally straight-hole slide plate 33, start the servo motor 22. The servo motor 22 drives the threaded rod 23 to rotate. The outer side of the threaded rod 23 is rotatably connected to the inner side of the housing 21. A stabilizing block is installed at the middle of the square slide track 24 to improve the stability of the threaded rod 23 during rotation. The rotation of the threaded rod 23 causes the spirally engaged internally threaded slide plate 32 to move backward. The movement of the internal threaded slide plate 32 drives the movement of the metal outer frame 31 and the internal straight hole slide plate 33. The straight slide rail 34 and the limiting slide post 25 limit the movement of the metal outer frame 31 and the internal threaded slide plate 32. When the front end of the metal outer frame 31 is flush with the front end of the housing 21, the rear end of the metal outer frame 31 is in contact with the front end of the rubber sealing ring 29. The rubber sealing ring 29 deforms and seals the metal outer frame 31 and the air intake cylinder 27, preventing air from entering the air intake cylinder 27 from escaping. The device is easy and quick to install and facilitates the disassembly of the mounting frame assembly 3 and the internal devices of the mounting frame assembly 3, improving the convenience of later maintenance.

[0022] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oxygen generator with a self-cleaning air filtration system, comprising a display cover (1) and a housing assembly (2), characterized in that: The bottom of the display cover (1) is fixedly connected to the outer shell assembly (2), the inner side of the outer shell assembly (2) is installed with the mounting frame assembly (3), the inner side of the mounting frame assembly (3) is fixedly connected with the filter screen (4), the inner side of the mounting frame assembly (3) is fixedly connected with the flow control assembly (5), the inner side of the mounting frame assembly (3) is fixedly connected with the fine filter assembly (6), and the rear end of the fine filter assembly (6) is fixedly connected with the movable reset assembly (7). The outer casing assembly (2) includes a housing (21), with a square slide rail (24) on the inner side of the housing (21). A servo motor (22) is fixedly connected to the inner side of the square slide rail (24) on the housing (21). A threaded rod (23) is fixedly connected to the end of the main shaft of the servo motor (22). A limit slide post (25) is fixedly connected to the inner side of the right end of the housing (21). A support frame (26) is fixedly connected to the inner side of the housing (21). A suction inlet cylinder (27) is fixedly connected to the inner side of the support frame (26). A stabilizing support plate (28) is fixedly connected to the lower end of the suction inlet cylinder (27). A rubber sealing ring (29) is fixedly connected to the front end of the suction inlet cylinder (27). The mounting frame assembly (3) includes a metal outer frame (31). An internally threaded sliding plate (32) is fixedly connected to the left side of the metal outer frame (31). An internal straight hole is fixedly connected to the right side of the metal outer frame (31). The sliding plate (33) has a straight slide rail (34) on its inner side. A stepper motor (35) is fixedly connected to the inner side of the upper end of the metal frame (31). An eccentric wheel (36) is fixedly connected to the end of the main shaft of the stepper motor (35). An air inlet (37) is opened on the inner side of the rear end of the metal frame (31). A multi-channel exhaust channel (38) is opened on the inner side of the lower end of the metal frame (31). A small fan (39) is fixedly connected to the inner side of the lower end of the metal frame (31). The moving reset assembly (7) includes an inner hole fixing post (71). A double column groove (72) is opened on the inner side of the inner hole fixing post (71). A baffle plate (75) is slidably connected to the inner side of the double column groove (72) opened on the inner hole fixing post (71). A protruding rod (73) is fixedly connected to one side of the baffle plate (75). A reset spring (74) is fixedly connected to one side of the baffle plate (75). The internal threaded slide plate (32) slides inside the square slide rail (24) opened in the housing (21), and the outer side of the inner hole fixing post (71) is fixedly connected to the inner side of the rear end of the metal frame (31).

2. The oxygen generator with a self-cleaning air filtration system according to claim 1, characterized in that: The flow control assembly (5) includes a partition plate (51), and a flow control port (52) is opened on the inner side of the partition plate (51). A solenoid valve (53) is installed on the inner side of the flow control port (52). The outer side of the partition plate (51) is fixedly connected to the inner side of the metal frame (31). The shape of the flow control port (52) is cylindrical. The number of flow control ports (52) corresponds one-to-one with the number of solenoid valves (53). The partition plate (51) is located at the rear end of the small fan (39).

3. An oxygen generator with a self-cleaning air filtration system according to claim 1, characterized in that: The fine filter assembly (6) includes a soft film (61), an internal mounting groove (62) is provided on the inner side of the soft film (61), a multi-layer filter plate (63) is fixedly connected to the internal mounting groove (62) of the soft film (61), a dust collection groove (64) is provided on the inner side of the multi-layer filter plate (63), and capillary pores (65) are provided on the inner side of the multi-layer filter plate (63).

4. An oxygen generator with a self-cleaning air filtration system according to claim 3, characterized in that: The outer side of the soft film (61) is fixedly connected to the inner side of the metal frame (31). The dust collection trough (64) is rectangular in shape. The dust collection trough (64) passes through the lower end of the multi-layer filter plate (63). The soft film (61) is away from the dust collection trough (64). The rear end of the multi-layer filter plate (63) is fixedly connected to the front end of the protruding rod (73).

5. An oxygen generator with a self-cleaning air filtration system according to claim 1, characterized in that: The inner side of the housing (21) is hollow. The square slide (24) is rectangular in shape. The square slide (24) is located on the inner side of the left end and the inner side of the right end of the housing (21). The outer side of the threaded rod (23) is rotatably connected to the inner side of the housing (21). The square slide (24) is opened through the front end of the housing (21). The outer side of the threaded rod (23) is spirally fitted to the inner side of the rear part of the internal threaded slide plate (32).

6. An oxygen generator with a self-cleaning air filtration system according to claim 1, characterized in that: The limiting slide (25) is cylindrical in shape. The outer side of the limiting slide (25) is in contact with the inner side of the straight slide (34) opened by the inner straight hole slide plate (33). The inner straight hole slide plate (33) slides and is in contact with the inner side of the square slide (24) at the right end.

7. An oxygen generator with a self-cleaning air filtration system according to claim 1, characterized in that: The inner side of the front end of the metal frame (31) is a through structure. The internal threaded slide plate (32) and the internal straight hole slide plate (33) are slotted rectangular bodies. The straight slide (34) passes through the rear part of the internal straight hole slide plate (33). The inner side of the rear part of the internal threaded slide plate (32) is provided with a threaded hole. The metal frame (31) slides inside the front end of the housing (21). The rear end of the metal frame (31) is in contact with the front end of the rubber sealing ring (29).

8. An oxygen generator with a self-cleaning air filtration system according to claim 1, characterized in that: The air inlet (37) is connected to the inside of the suction air inlet cylinder (27). The outer side of the eccentric wheel (36) is attached to the rear end of the multi-layer filter plate (63). The inner side of the rear end of the metal frame (31) is provided with an installation hole. The upper part of the multi-channel waste discharge channel (38) penetrates the inner side of the metal frame (31). The through hole at the upper end of the multi-channel waste discharge channel (38) is connected to the inside of the dust collection trough (64). The through hole at the front end of the multi-channel waste discharge channel (38) is connected to the inside of the small fan (39).

9. An oxygen generator with a self-cleaning air filtration system according to claim 1, characterized in that: The inner hole fixing post (71) is a slotted cylinder. The number of inner hole fixing posts (71) corresponds one-to-one with the number of protruding rods (73). The front end of the reset spring (74) is fixedly connected to the front end of the double column groove (72) opened in the inner hole fixing post (71). The baffle plate (75) and the protruding rod (73) are both cylindrical.

10. A method of using an oxygen generator with a self-cleaning air filtration system according to any one of claims 1-9, characterized in that: S1: When automatically removing impurities from the fine filter assembly (6) and filter screen (4), the stepper motor (35) drives the eccentric wheel (36) to rotate. The eccentric wheel (36) continuously impacts the multi-layer filter plate (63). Under the push of the eccentric wheel (36), the multi-layer filter plate (63) moves. The movement of the multi-layer filter plate (63) causes the soft rubber sheet (61) fixedly connected to the outside through the built-in mounting groove (62) to deform. The soft plastic sheet (61) is made of soft plastic. Under the action of the eccentric wheel (36), the multi-layer filter plate (63) vibrates. Under the action of the vibration of the multi-layer filter plate (63), the impurities inside the dust collection groove (64) opened in the multi-layer filter plate (63) can be shaken off. The impurities fall into the lower end of the metal frame (31). At the same time, when the multi-layer filter plate (63) moves, it drives the convex rod (73) to move. The outer side of the convex rod (73) is in contact with the inner side of the double column groove (72) opened in the inner hole fixing column (71). When the baffle plate (75) moves, it drives the return spring (74) to deform. Under the elastic tension of the spring (74), the protruding rod (73) can drive the multi-layer filter plate (63) to move towards the eccentric wheel (36). When removing impurities from the lower end of the metal frame (31), the small fan (39) is started. The small fan (39) draws air from the multi-pass exhaust channel (38). At this time, the impurities in the dust collection trough (64) enter the small fan (39) from the multi-pass exhaust channel (38) and are blown out from the small fan (39). When blowing air, the solenoid valve (53) is closed. At this time, the gas is concentrated and blown out from the through hole inside the filter screen (4). S2: When filtering impurities in the air, an air pump is installed inside the air intake cylinder (27). Under the action of the air pump inside the air intake cylinder (27), the external air enters through the opening inside the filter screen (4). The filter screen (4) performs preliminary filtration of impurities in the air and can filter large-diameter impurities. At this time, the solenoid valve (53) is in the open state, and the gas enters from the control port (52) and contacts the multi-layer filter plate (63). The multi-layer filter plate (63) is set with multi-layer filtration at the bottom. At the same time, the capillary pores (65) inside the multi-layer filter are arranged alternately. The multi-layer filter plate (63) can filter small particulate impurities in the air. S3: When installing the mounting frame assembly (3) and the internal device of the mounting frame assembly (3), align the metal outer frame (31) with the inner groove at the front end of the housing (21), and slide the inner threaded slide plate (32) and the inner straight hole slide plate (33) inside the two square slides (24). When the threaded hole on the inner side of the inner threaded slide plate (32) is spirally engaged with the outer side of the threaded rod (23), and the limiting slide post (25) is inside the straight slide (34) of the inner straight hole slide plate (33), the servo motor (22) drives the threaded rod (23) to move. 3) Rotation: The outer side of the threaded rod (23) is rotated and connected to the inner side of the housing (21). A stabilizing block is set at the middle end of the square slide (24). The rotation of the threaded rod (23) drives the outer spirally fitted inner threaded slide plate (32) to move backward. The movement of the inner threaded slide plate (32) drives the metal outer frame (31) and the inner straight hole slide plate (33) to move. When the front end of the metal outer frame (31) is flush with the front end of the housing (21), the rear end of the metal outer frame (31) is fitted with the front end of the rubber sealing ring (29), and the rubber sealing ring (29) deforms.

Images