Nine-tower parallel micro pressure swing adsorption oxygen generator

Abstract

The application relates to the technical field of oxygen generators, in particular to a nine-tower parallel micro pressure swing adsorption oxygen generator, which comprises a shell with an adsorption cavity and a valve cavity communicated with the adsorption cavity, a gas outlet hole is arranged on the top surface of the shell, and a gas discharge hole communicated with the adsorption cavity is arranged on the side wall of the shell; and an adsorption oxygen preparation mechanism is arranged and used for preparing oxygen, the adsorption oxygen preparation mechanism comprises an adsorption tower, an oxygen storage tank and a control assembly, the control assembly comprises a valve body, a moving valve piece, a static valve piece and a driving piece, the adsorption oxygen preparation equipment adopts multi-channel airflow switching to prepare oxygen, the traditional oxygen generator mostly uses pneumatic valves and electromagnetic valves, the service life is relatively low, the application adopts multi-channel airflow, the service life of the oxygen preparation device can be prolonged, the oxygen generator is more stable, and the oxygen generator can continuously prepare oxygen to avoid discontinuity.

Description

Technical Field

[0001] This invention relates to the field of oxygen generator technology, and in particular to a nine-tower parallel micro pressure swing adsorption oxygen generator. Background Technology

[0002] Pressure Swing Adsorption (PSA) oxygen generators are devices that utilize the physical properties of adsorbent materials to separate oxygen and nitrogen by adjusting gas pressure. Their basic working principle is based on the different adsorption capacities of different gases on adsorbents (such as molecular sieves). By periodically changing the pressure, oxygen is separated out.

[0003] Air is compressed and fed into an adsorption tower. Nitrogen in the oxygen-containing air, due to its larger molecular size, is easily adsorbed by the adsorbent (usually a molecular sieve), while oxygen molecules, being relatively smaller, are not easily adsorbed. Therefore, oxygen flows out of the adsorption tower. When the adsorbent in the tower reaches saturation, the pressure decreases, releasing nitrogen while oxygen remains in the unit. By reducing the pressure, the adsorbent releases adsorbed nitrogen and other impurities. By controlling multiple adsorption towers to operate alternately, with some towers performing adsorption and others performing desorption, continuous oxygen supply is achieved. Existing oxygen generation equipment can only perform cyclic oxygen production and cannot provide continuous output. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the problem that existing oxygen generating equipment can only perform cyclic oxygen generation and cannot continuously output oxygen, and to provide a nine-tower parallel micro pressure swing adsorption oxygen generator.

[0005] The technical solution adopted by this invention to solve its technical problem is: a nine-tower parallel micro pressure swing adsorption oxygen generator, comprising:

[0006] The housing has an adsorption chamber and a valve chamber communicating with the adsorption chamber. An air outlet is provided on the top surface of the housing, and an exhaust port communicating with the adsorption chamber is provided on the side wall of the housing.

[0007] The system includes an adsorption oxygen generation mechanism for producing oxygen. This mechanism comprises an adsorption tower, an oxygen storage tank, and control components. An oxygen channel is located at the top of the housing. The adsorption tower and oxygen storage tank are arranged within the adsorption chamber. The adsorption tower allows oxygen to pass through and adsorbs nitrogen. The input end of the oxygen channel is connected to the output end of the adsorption tower, and the output end of the oxygen channel is connected to the input end of the oxygen storage tank. An outlet port is connected to the oxygen storage tank. The bottom surface of the housing has a first connection hole connected to the input end of the adsorption tower and a first desorption hole connected to the adsorption chamber. The control components include a valve body, a moving valve plate, a stationary valve plate, and a drive unit. The valve body is mounted on the bottom surface of the housing, and the valve body and housing together form a valve chamber. An inlet port connected to the valve chamber is located on the bottom surface of the valve body. The drive unit provides power for the rotation of the moving valve plate. The output end is connected to the moving valve plate. The moving valve plate and the stationary valve plate are arranged in the valve cavity. The stationary valve plate has a connecting channel and a desorption channel. The connecting channel is connected to the first connecting hole, and the desorption channel is connected to the first desorption hole. The moving valve plate has a connecting groove, a desorption groove and an air inlet groove. The bottom surface of the air inlet groove has a second connecting hole that is connected to the valve cavity. The desorption channel is connected to the connecting groove. The desorption groove is connected to the connecting groove through a third connecting hole. The desorption channel is connected to the connecting groove. The adsorption oxygen generator of this application uses multi-channel airflow switching to generate oxygen. Traditional oxygen generators mostly use pneumatic valves and solenoid valves, which have a short service life. This application uses multi-channel airflow, which can extend the service life of the oxygen generator, make the oxygen generator more stable, and can continuously produce oxygen to avoid interruption.

[0008] When the moving valve plate rotates, the connecting channel connects to the desorption tank or the air inlet tank.

[0009] It further includes a ring-shaped connecting groove, with the desorption groove and the air inlet groove located inside the connecting groove.

[0010] Furthermore, both the desorption groove and the air intake groove are arc-shaped channels, and the desorption groove and the air intake groove are located on the same circumference.

[0011] The housing further includes an upper cover, an outer shell, and a lower cover. An oxygen passage is opened inside the upper cover, an exhaust port is arranged on the outer shell, and a first connection hole and a first desorption hole are arranged on the lower cover.

[0012] Furthermore, the bottom surface of the upper cover and the top surface of the lower cover are provided with fixing grooves for fixing the adsorption tower or oxygen storage tank.

[0013] Further, the adsorption tower is equipped with a molecular sieve and two flow dividers, with the two flow dividers holding the molecular sieve.

[0014] The device further includes two desorption grooves spaced radially apart to form a desorption groove group, which are connected by a through hole. The desorption groove group is arranged in two groups spaced circumferentially. The air inlet grooves are also arranged in two groups spaced radially apart to form an air inlet groove group, which are also arranged in two groups spaced circumferentially. The air inlet groove group and the desorption groove group are arranged alternately.

[0015] The beneficial effects of the present invention are as follows: The present invention provides a nine-tower parallel micro pressure swing adsorption oxygen generator. The adsorption oxygen generator of this application adopts multi-channel airflow switching to generate oxygen. Traditional oxygen generators mostly use pneumatic valves and solenoid valves, which have a short service life. The present application adopts multi-channel airflow, which can extend the service life of the oxygen generator, make the oxygen generator more stable, and can also continuously produce oxygen to avoid interruption. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a bottom-view structural diagram of the present invention;

[0019] Figure 3 This is the present invention. Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0020] Figure 4 This is a three-dimensional structural diagram of the present invention without an outer shell;

[0021] Figure 5 This is the present invention. Figure 4 Cross-sectional structural diagram;

[0022] Figure 6 This is a front view structural diagram of the top cover of the present invention;

[0023] Figure 7 This is the present invention. Figure 6 Schematic diagram of the cross-sectional structure at point BB;

[0024] Figure 8 This is a three-dimensional structural diagram of the top cover of the present invention;

[0025] Figure 9 This is a three-dimensional structural diagram of the lower cover of the present invention;

[0026] Figure 10 This is a three-dimensional structural schematic diagram of the lower cover of the present invention from another perspective;

[0027] Figure 11 This is a top view of the lower cover of the present invention;

[0028] Figure 12 This is a three-dimensional structural schematic diagram of the static valve plate of the present invention;

[0029] Figure 13 This is a three-dimensional structural schematic diagram of the static valve plate of the present invention from another perspective;

[0030] Figure 14 This is a top view of the static valve plate of the present invention;

[0031] Figure 15 This is a three-dimensional structural schematic diagram of the moving valve plate of the present invention;

[0032] Figure 16 This is a three-dimensional structural schematic diagram of the moving valve plate of the present invention from another perspective;

[0033] Figure 17 This is a top view of the structure of the lower cover, stationary valve plate, and moving valve plate of the present invention after assembly (in perspective).

[0034] In the figure: 1. Shell, 11. Adsorption chamber, 12. Air outlet, 13. Exhaust port, 14. Oxygen channel, 15. First connection hole, 16. First desorption hole, 17. Top cover, 18. Outer shell, 19. Bottom cover;

[0035] 2. Adsorption oxygen generation mechanism, 21. Adsorption tower, 211. Molecular sieve, 212. Diverter plate, 22. Oxygen storage tank, 23. Control component, 231. Valve body, 2311. Air inlet, 232. Moving valve plate, 2321. Connecting groove, 2322. Desorption groove, 2323. Air inlet groove, 2324. Second connecting hole, 2325. Third connecting hole, 233. Static valve plate, 2331. Connecting channel, 2332. Desorption channel, 234. Driving component, 235. Valve chamber. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0037] like Figure 1 This is a schematic diagram of the structure of the present invention, a nine-tower parallel micro pressure swing adsorption oxygen generator, comprising:

[0038] like Figure 1 , 2 As shown, the housing 1 has an adsorption chamber 11, an air outlet 12 is provided on the top surface of the housing 1, and an exhaust port 13 communicating with the adsorption chamber 11 is provided on the side wall of the housing 1.

[0039] And an adsorption oxygen generating mechanism 2, which is used to produce oxygen, includes an adsorption tower 21, an oxygen storage tank 22, and a control component 23. An oxygen channel 14 is provided on the top of the housing 1. The housing 1 includes an upper cover 17, an outer shell 18, and a lower cover 19, as shown below. Figure 6 , 7 As shown in Figure 8, the oxygen passage 14 is located inside the upper cover 17, and the exhaust port 13 is located on the outer shell 18, as shown in Figure 8. Figure 9 , 10 As shown in Figure 11, the first connecting hole 15 and the first desorption hole 16 are arranged on the lower cover 19. The outer shell 18 is a noise-reducing shell with a thickness of 0.5 mm, and the outer shell 18 has four exhaust holes 13. The lower cover 19 has eight first connecting holes 15 and four first desorption holes 16.

[0040] The bottom surface of the upper cover 17 and the top surface of the lower cover 19 are provided with fixing grooves for fixing the adsorption tower 21 or the oxygen storage tank 22. The ends of the adsorption tower 21 or the oxygen storage tank 22 are fitted into their corresponding fixing grooves, and sealing gaskets are arranged in the fixing grooves. In this embodiment, eight adsorption towers 21 are arranged, and one oxygen storage tank 22 is arranged. The eight adsorption towers 21 are arranged in a square distribution, and the eight adsorption towers 21 are arranged around the oxygen storage tank 22. The adsorption towers 21 and the oxygen storage tank 22 form a nine-tower parallel connection. This design makes the equipment easier to install, reduces the number of parts in the entire equipment, and increases the integration of the equipment.

[0041] The adsorption tower 21 and the oxygen storage tank 22 are arranged in the adsorption chamber 11. The adsorption tower 21 is used to supply oxygen and adsorb nitrogen. The input end of the oxygen channel 14 is connected to the output end of the adsorption tower 21, and the output end of the oxygen channel 14 is connected to the input end of the oxygen storage tank 22. The gas outlet 12 is connected to the oxygen storage tank 22. The bottom surface of the shell 1 is provided with a first connection hole 15 connected to the input end of the adsorption tower 21 and a first desorption hole 16 connected to the adsorption chamber 11.

[0042] like Figure 3 As shown, the adsorption tower 21 contains a molecular sieve 211 and two flow dividers 212, with the two flow dividers 212 holding the molecular sieve 211, which has a diameter of about 0.5 mm.

[0043] The control component 23 includes a valve body 231, a moving valve plate 232, a stationary valve plate 233, and a drive component 234. The valve body 231 is mounted on the bottom surface of the housing 1, and the valve body 231 and the housing 1 enclose a valve cavity 235. An air inlet 2311 communicating with the valve cavity 235 is provided on the bottom surface of the valve body 231. The drive component 234 is used to provide power for the rotation of the moving valve plate 232, and to switch the air inlet groove 2323 and the desorption groove 2322 to connect the connecting channel 2331. The output end of the drive component 234 is connected to the moving valve plate 232. The moving valve plate 232 and the stationary valve plate 233 are arranged in the valve cavity 235. The drive component 234 can be a motor or a gear and rack transmission mechanism. The adsorption oxygen generator of this application uses multi-channel airflow switching to generate oxygen. Traditional oxygen generators mostly use pneumatic valves and solenoid valves, which have a short service life. This application uses multi-channel airflow, which can extend the service life of the oxygen generator, make the oxygen generator more stable, and can also continuously produce oxygen without interruption.

[0044] like Figure 12 , 13 As shown in Figure 14, the stationary valve plate 233 has a connecting channel 2331 and a desorption channel 2332. The connecting channel 2331 is connected to the first connecting hole 15, and the desorption channel 2332 is connected to the first desorption hole 16. In this embodiment, the stationary valve plate 233 has eight connecting channels 2331 and four desorption channels 2332. The connecting channels 2331 and the air inlet groove 2323 are arranged accordingly. A sealing gasket is arranged between the stationary valve plate 233 and the upper cover 17.

[0045] like Figure 15 , 16 As shown, the moving valve plate 232 is provided with a connecting groove 2321, a desorption groove 2322 and an air inlet groove 2323. The bottom surface of the air inlet groove 2323 is provided with a second connecting hole 2324 that communicates with the valve cavity 235. The desorption channel 2332 is connected to the connecting groove 2321. The desorption groove 2322 is connected to the connecting groove 2321 through a third connecting hole 2325. The desorption channel 2332 is connected to the connecting groove 2321.

[0046] When the moving valve plate 232 rotates, the connecting channel 2331 connects to the desorption groove 2322 or the air inlet groove 2323.

[0047] A compression spring is provided at the opposite end of the moving valve plate 232 inside the valve cavity 235.

[0048] The connecting groove 2321 has an annular structure, and the desorption groove 2322 and the air inlet groove 2323 are located inside the connecting groove 2321.

[0049] Both the desorption groove 2322 and the air inlet groove 2323 are arc-shaped channels, and the desorption groove 2322 and the air inlet groove 2323 are located on the same circumference, that is, there is at least one air inlet groove 2323 on the circumference with the desorption groove 2322, and at least one desorption groove 2322 on the circumference with the air inlet groove 2323.

[0050] In this implementation: two desorption grooves 2322 are radially spaced and form a desorption groove group. The two radially spaced desorption grooves 2322 are connected by a through hole. Two desorption groove groups are spaced along the circumferential direction. Two intake grooves 2323 are radially spaced and form an intake groove group. Two intake groove groups are spaced along the circumferential direction. The intake groove groups and desorption groove groups are arranged alternately. That is, the actuated valve plate has four desorption grooves 2322 and four intake grooves 2323, and the intake grooves 2323 and desorption grooves 2322 are arranged concentrically.

[0051] The working principle of a nine-tower parallel micro pressure swing adsorption oxygen generator is as follows: air is sent into the valve chamber 235 through the air inlet 2311 by the compressor (in the pressurized state, nitrogen can be adsorbed), and enters the air inlet slot 2323 through the second connection hole 2324 of the moving valve plate 232. The drive component 234 is started to drive the moving valve plate 232 to rotate, so that the desorption slot 2322 and the air inlet slot 2323 switch the connection channel 2331.

[0052] When the air inlet sump 2323 is connected to the first connecting hole 15 through the connecting channel 2331, air is sent into the adsorption tower 21 through the first connecting hole 15 on the lower cover 19 for adsorption. The oxygen obtained after adsorption is collected through the oxygen channel of the upper cover 17 and enters the oxygen storage tank 22.

[0053] When the desorption tank 2322 is connected through the connecting channel 2331, the third connecting hole 2325, the connecting groove 2321, the desorption channel 2332, and the first desorption hole 16, and when the desorption tank 2322 is connected to the adsorption tower 21 after adsorption (at this time, the pressure drop causes nitrogen to be released), the adsorbed nitrogen is desorbed from the molecular sieve 211 and enters the desorption tank 2322. The nitrogen enters the connecting groove 2321 through the third connecting hole 2325 in the desorption tank 2322, and then enters the adsorption chamber 11 between the noise reduction shell 18 and the adsorption tower 21 through the desorption channel 2332 on the static valve plate 233 and the first desorption hole on the lower cover. Then, it escapes into the atmosphere through the exhaust hole 13 on the noise reduction shell 18. The obtained oxygen is stored in the oxygen storage tank 22 or discharged through the exhaust hole 12 on the upper cover.

[0054] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A nine-tower parallel micro pressure swing adsorption oxygen generator, characterized in that, include: The shell (1) has an adsorption chamber (11), and an air outlet (12) is provided on the top surface of the shell (1). An exhaust port (13) communicating with the adsorption chamber (11) is provided on the side wall of the shell (1). And an adsorption oxygen generation mechanism (2) for producing oxygen. The adsorption oxygen generation mechanism (2) includes an adsorption tower (21), an oxygen storage tank (22), and a control component (23). An oxygen channel (14) is provided on the top of the shell (1). The adsorption tower (21) and the oxygen storage tank (22) are arranged in the adsorption chamber (11). The adsorption tower (21) is used to supply oxygen and adsorb nitrogen. The input end of the oxygen channel (14) is connected to the output end of the adsorption tower (21), and the output end of the oxygen channel (14) is connected to the input end of the oxygen storage tank (22). The outlet (12) and the oxygen storage tank (22) are connected. The bottom surface of the shell (1) is provided with a first connection hole (15) that communicates with the input end of the adsorption tower (21) and a first desorption hole (16) that communicates with the adsorption chamber (11). The control component (23) includes a valve body (231), a moving valve plate (232), a stationary valve plate (233), and a drive component (234). The valve body (231) is installed on the bottom surface of the shell (1). The valve body (231) and the shell (1) enclose a valve cavity (235). An air inlet (2311) communicating with the valve cavity (235) is provided on the bottom surface. The driving member (234) is used to provide power for the rotation of the moving valve plate (232). The output end of the driving member (234) is connected to the moving valve plate (232). The moving valve plate (232) and the stationary valve plate (233) are arranged in the valve cavity (235). The stationary valve plate (233) is provided with a connecting channel (2331) and a desorption channel (2332). The connecting channel (2331) is connected to the first connecting hole (15). The desorption channel (233) is connected to the first connecting hole (15). 2) It is connected to the first desorption hole (16). The moving valve plate (232) is provided with a connecting groove (2321), a desorption groove (2322) and an air inlet groove (2323). The bottom surface of the air inlet groove (2323) is provided with a second connecting hole (2324) that communicates with the valve cavity (235). The desorption channel (2332) is connected to the connecting groove (2321). The desorption groove (2322) is connected to the connecting groove (2321) through a third connecting hole (2325). The desorption channel (2332) is connected to the connecting groove (2321). There are eight adsorption towers (21) and one oxygen storage tank (22). The eight adsorption towers (21) are arranged in a square and are arranged around the oxygen storage tank (22). The adsorption towers (21) and the oxygen storage tank (22) form a nine-tower parallel configuration. The desorption groove (2322) and the air inlet groove (2323) are both arc-shaped channels, and the desorption groove (2322) and the air inlet groove (2323) are located on the same circumference; The desorption grooves (2322) are arranged in two radially spaced groups, and the two radially spaced desorption grooves (2322) are connected by through holes. The desorption groove groups are arranged in two circumferentially spaced groups. The air inlet grooves (2323) are arranged in two radially spaced groups, and the air inlet groove groups are arranged in two circumferentially spaced groups. The air inlet groove groups and the desorption groove groups are arranged alternately. When the moving valve plate (232) rotates, the connecting channel (2331) connects to the desorption groove (2322) or the air inlet groove (2323).

2. The nine-tower parallel micro pressure swing adsorption oxygen generator as described in claim 1, characterized in that: The connecting groove (2321) has an annular structure, and the desorption groove (2322) and the air inlet groove (2323) are located inside the connecting groove (2321).

3. The nine-tower parallel micro pressure swing adsorption oxygen generator as described in claim 1, characterized in that: The housing (1) includes an upper cover (17), an outer shell (18) and a lower cover (19). The oxygen channel (14) is opened inside the upper cover (17), the exhaust port (13) is arranged on the outer shell (18), and the first connecting hole (15) and the first desorption hole (16) are arranged on the lower cover (19).

4. A nine-tower parallel micro pressure swing adsorption oxygen generator as described in claim 3, characterized in that: The bottom surface of the upper cover (17) and the top surface of the lower cover (19) are provided with fixing grooves for fixing the adsorption tower (21) or the oxygen storage tank (22).

5. A nine-tower parallel micro pressure swing adsorption oxygen generator as described in claim 1, characterized in that: The adsorption tower (21) contains a molecular sieve (211) and two flow dividers (212), and the two flow dividers (212) hold the molecular sieve (211).

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