Oxygen enrichment equipment and oxygen enrichment process thereof

Abstract

The invention relates to oxygen enrichment equipment and an oxygen enrichment process thereof, and relates to the technical field of jet propulsion devices.The oxygen enrichment equipment comprises an oxygen enrichment disc, an air inlet is formed in one axial side of the oxygen enrichment disc, and a plurality of rich nitrogen separation outlets are formed in the other axial side of the oxygen enrichment disc; a plurality of centrifugal separation flow channels are formed in the oxygen enrichment disc and are sequentially arranged at intervals in the circumferential direction of the air inlet, one end of each centrifugal separation flow channel in the length direction of the centrifugal separation flow channel communicates with the air inlet, and the other end of each centrifugal separation flow channel penetrates through the oxygen enrichment disc in the direction away from the air inlet; the rich nitrogen separation outlets and the centrifugal separation flow channels are arranged in a one-to-one correspondence manner, and the rich nitrogen separation outlets communicate with the corresponding centrifugal separation flow channels; the air suction fan is located in the air inlet, and the air suction fan is coaxially connected with the oxygen enrichment disc; and the driving end of the centrifugal driver is coaxially connected with the oxygen enrichment disc. According to the oxygen enrichment equipment, a mechanical rotary separation mode is adopted, other consumables are not introduced, the later maintenance cost of the oxygen enrichment fan is reduced, and the fault rate of the oxygen enrichment fan is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of jet propulsion devices, and in particular to an oxygen enrichment device and an oxygen enrichment process thereof. Background Art

[0002] Jet propulsion is a power system based on Newton's third law, which propels an aircraft or vehicle forward by ejecting material at high speed to generate a reaction force. Currently, jet propulsion is primarily used in engines for high-altitude aircraft, such as rocket engines and air jet engines. To optimize the combustion efficiency of the fuel within jet propulsion systems, improve the thrust-to-weight ratio, and enhance ignition stability and combustion safety in high-altitude, low-oxygen environments, existing jet propulsion systems often require the use of oxygen-enriched air instead of conventional air as a combustion aid.

[0003] To achieve the supply of oxygen-enriched air, existing jet devices are usually integrated with oxygen-enriched blowers (or air separation systems). The core task of oxygen-enriched blowers is to enrich oxygen in regular air to produce oxygen-enriched air. In oxygen-enriched blowers, oxygen enrichment is mainly achieved by oxygen enrichment equipment, and there are two main technical paths for achieving oxygen enrichment with oxygen enrichment equipment: The first method involves extracting high-concentration oxygen through the combined action of catalysts and electromagnetic fields. Specifically, a specific catalyst is used to lower the energy barrier for oxygen molecule dissociation. Under the action of a strong electromagnetic field, this promotes the dissociation of air molecules and the selective migration / enrichment of oxygen ions, ultimately yielding high-concentration oxygen.

[0004] The second method is membrane separation oxygen enrichment. Specifically, it relies on polymer or inorganic membrane components with gas selective permeability. The differences in solubility and diffusion rates of different gas components in the air (primarily oxygen and nitrogen) in the membrane material are exploited to achieve selective oxygen permeation, thereby increasing the oxygen concentration in the permeate-side gas.

[0005] Regarding the aforementioned technologies, oxygen enrichment equipment, whether using a catalyst and electromagnetic field combined to extract high-concentration oxygen or membrane separation for oxygen enrichment, requires additional consumables. Since consumables need to be replaced regularly, frequent shutdowns for replacement are necessary during long-term operation. This results in high operating and maintenance costs for the oxygen enrichment blower, hindering its long-term stable operation. Summary of the Invention

[0006] The present application provides an oxygen enrichment device and an oxygen enrichment process thereof, the purpose of which is to improve the oxygen enrichment process of the oxygen enrichment device without using additional consumables, reduce the high cost of long-term operation and maintenance of the oxygen enrichment blower, and thus facilitate the long-term stable operation of the oxygen enrichment blower.

[0007] In the first aspect, the present application provides an oxygen enrichment device that adopts the following technical solution: An oxygen enrichment device comprises an oxygen enrichment disk, wherein the oxygen enrichment disk is provided with an air inlet on one axial side and a plurality of nitrogen-rich separation outlets on the other side; a plurality of centrifugal separation flow channels are provided in the oxygen enrichment disk, and the plurality of centrifugal separation flow channels are arranged in sequence and spaced apart along the circumference of the air inlet, and the centrifugal separation flow channels are connected with the air inlet at one end along their own length direction, and the other end passes through the oxygen enrichment disk in a direction away from the air inlet; the nitrogen-rich separation outlets are arranged in a one-to-one correspondence with the centrifugal separation flow channels, and the nitrogen-rich separation outlets are connected with the corresponding centrifugal separation flow channels; an intake fan, wherein the intake fan is located in the air inlet and is coaxially connected to the oxygen enrichment disk; a centrifugal drive, wherein the driving end of the centrifugal drive is coaxially connected to the oxygen enrichment disk.

[0008] By adopting the above technical solution, the oxygen enrichment equipment cooperates with the oxygen enrichment disk, the intake fan and the centrifugal drive. When the centrifugal drive is working, the oxygen enrichment disk and the intake fan rotate synchronously, so that the intake fan can suck air into the air inlet of the oxygen enrichment disk and send it into the centrifugal separation flow channel. The high-speed rotation of the oxygen enrichment disk can establish a centrifugal force field.

[0009] Under the action of the centrifugal field, nitrogen and oxygen molecules in the air, due to their different relative molecular masses, experience different centrifugal velocities. This allows the oxygen and nitrogen molecules in the centrifugal separation channel to separate and enrich. Nitrogen-rich gas is discharged from the nitrogen-rich separation outlet, while oxygen-rich gas is discharged from the end of the centrifugal separation channel away from the air inlet. This achieves the separation and enrichment of oxygen and nitrogen molecules in the air, thereby increasing the oxygen content in the oxygen-rich gas and meeting the function of the oxygen enrichment equipment.

[0010] Since the above-mentioned oxygen enrichment equipment adopts a purely mechanical rotating structure, no additional consumables are required, which can reduce the long-term operation and maintenance costs of the oxygen enrichment blower, thereby facilitating the long-term stable operation of the oxygen enrichment blower.

[0011] Optionally, a primary separation ring is coaxially sleeved on the outer side of the oxygen-enriched disk, and the primary separation ring closes the centrifugal separation flow channel; a plurality of primary separation holes are opened through the primary separation ring, and the centrifugal separation flow channel is connected to the corresponding primary separation holes.

[0012] By adopting the above technical solution and based on the provision of a primary separation ring, under the action of the centrifugal force field, the oxygen-rich gas in the centrifugal separation channel will impact the primary separation ring. Afterwards, the oxygen-rich gas will swirl back into the corresponding centrifugal separation channel, thereby separating and enriching the nitrogen and oxygen molecules in the oxygen-rich gas, which can further increase the oxygen content of the oxygen-rich gas. As a result, the oxygen content of the oxygen-rich gas discharged through the primary separation hole is higher.

[0013] In addition, based on the momentum difference between oxygen separation and nitrogen separation, the nitrogen molecules in the oxygen-rich body can be rebounded to the corresponding centrifugal separation flow channel for re-separation, while the oxygen molecules can pass through the separation hole more efficiently, thereby achieving better nitrogen and oxygen separation and enrichment effects in the oxygen-rich body.

[0014] Optionally, a secondary separation ring is coaxially sleeved on the outer side of the primary separation ring, and the secondary separation ring is coaxially spaced apart from the primary separation ring; both axial ends of the primary separation ring and the secondary separation ring are connected to the oxygen-enriched disk, and the oxygen-enriched disk closes the spacing between the primary separation ring and the secondary separation ring; a number of secondary separation holes are opened through the secondary separation ring.

[0015] By adopting the above technical solution, based on the setting of the secondary separation ring, when the oxygen-rich gas passes through the primary separation ring and enters between the primary separation ring and the secondary separation ring, the oxygen-rich gas impacts the secondary separation ring, thereby causing the oxygen-rich gas to swirl between the primary separation ring and the secondary separation ring.

[0016] Under the action of the centrifugal field, the nitrogen and oxygen in the oxygen-rich gas between the first and second separation rings are separated again. At this time, nitrogen molecules are enriched near the outside of the primary separation ring to form nitrogen-rich reflux gas, while oxygen molecules are enriched near the inside of the secondary separation ring to form the exhaust oxygen-rich gas. As the oxygen-rich gas flows between the primary and secondary separation rings, part of the nitrogen-rich reflux gas flows back through the primary separation holes into the corresponding centrifugal separation flow channel, while part of the exhaust oxygen-rich gas is discharged through the secondary separation holes.

[0017] This can achieve the re-separation and enrichment of nitrogen and oxygen molecules in the air, and can also increase the oxygen content of the oxygen-enriched exhaust gas.

[0018] Optionally, a plurality of support plates are provided between the primary separation ring and the secondary separation ring, and the plurality of support plates are spaced in sequence along the circumference of the primary separation ring, and two adjacent support plates are spaced to form a static chamber, and the two adjacent static chambers are independently provided; the primary separation hole and the secondary separation hole are both connected to the corresponding static chamber.

[0019] By adopting the above technical solution, based on the setting of the static chamber, the oxygen-rich gas passing through the primary separation ring enters several different static chambers, which can reduce the relative disturbance between the oxygen-rich gases, weaken the turbulent effect of the flow of the oxygen-rich gas, and accelerate the separation and enrichment of nitrogen and oxygen in the oxygen-rich gas in the corresponding static chamber.

[0020] In the second aspect, the oxygen enrichment process of an oxygen enrichment equipment provided in the present application adopts the following technical solution: an oxygen enrichment process of an oxygen enrichment equipment, used for the above-mentioned oxygen enrichment equipment, comprises at least the following steps: S1, sucking air into the oxygen enrichment disk from the air inlet, and sending the air into the several centrifugal separation flow channels; S2, driving the oxygen enrichment disk to rotate to establish a centrifugal force field. Under the action of the centrifugal force field, the nitrogen molecules and oxygen molecules in the air flowing in the centrifugal separation flow channel are separated, and the nitrogen molecules are enriched in the centrifugal separation flow channel to form enriched nitrogen, and the oxygen molecules are enriched in the centrifugal separation flow channel to form enriched oxygen; S3, the nitrogen-rich gas and the oxygen-rich gas are discharged from the oxygen enrichment disk independently.

[0021] By adopting this technical solution, the process utilizes the centrifugal force generated by the rotation of the oxygen-enriching disk to separate and enrich nitrogen and oxygen molecules in the air, forming nitrogen-enriched and oxygen-enriched gases. This meets the basic requirements of oxygen enrichment. Because this process does not require additional consumables, it can reduce the subsequent maintenance costs and failure rate of oxygen enrichment equipment using this process.

[0022] Optionally, step S1 also includes the following steps: S11, axial air intake: the intake fan rotates to draw air into the air inlet; S12, preliminary nitrogen and oxygen centrifugal separation and enrichment: the intake fan rotates to convert the air sucked into the air inlet into a rotating airflow, the oxygen molecules in the rotating airflow are enriched to the outer layer of the rotating airflow, and the nitrogen molecules are enriched to the inner layer of the rotating airflow; S13, air supply: the intake fan rotates to transport the rotating airflow to a number of centrifugal separation flow channels.

[0023] By adopting the above technical solution, in the step of the intake fan supplying air to the oxygen enrichment disk, the intake fan converts the air into a rotating airflow. The formation of the rotating airflow causes the nitrogen molecules and oxygen molecules in the air to obtain different centrifugal speeds, so that the oxygen molecules are enriched in the outer layer of the rotating airflow and the nitrogen molecules are enriched in the inner layer of the rotating airflow, thereby realizing the preliminary centrifugal separation and enrichment of nitrogen and oxygen in the air.

[0024] Optionally, step S2 includes the following steps: S21, the oxygen-enriched disk rotates at high speed to establish a centrifugal field; S22, the air fed into the centrifugal separation channel flows along the length direction of the corresponding centrifugal separation channel. Under the action of the centrifugal field, the nitrogen molecules and oxygen molecules in the air obtain different centrifugal speeds due to their different relative molecular masses. At different centrifugal speeds, the nitrogen molecules are enriched to the end of the centrifugal separation channel close to the air inlet to form a nitrogen-rich zone containing enriched nitrogen; the oxygen molecules are enriched to the end of the centrifugal separation channel away from the air inlet to form an oxygen-rich zone containing enriched oxygen.

[0025] By adopting the above technical solution, the oxygen-enriched disk rotates at high speed to establish a centrifugal force field, so that the air sent into the separation channel obtains different centrifugal speeds during the flow process due to the different relative molecular masses of nitrogen molecules and oxygen molecules, thereby realizing the separation of nitrogen molecules and oxygen molecules, forming nitrogen-rich gas at the end of the centrifugal separation channel close to the air inlet, and forming oxygen-rich gas at the end away from the air inlet, which enables the oxygen-rich gas to be discharged along the centrifugal separation channel, thereby realizing the oxygen enrichment process.

[0026] Optionally, after step S22, the following steps are also included: the oxygen-rich gas in the oxygen-rich zone is discharged into the corresponding centrifugal separation channel; the oxygen-rich gas discharged from the centrifugal separation channel is refluxed into the corresponding centrifugal separation channel; under the action of the centrifugal field, the nitrogen molecules in the refluxed oxygen-rich gas are enriched in the nitrogen-rich zone to increase the nitrogen content of the nitrogen-rich gas, and the oxygen molecules are enriched in the oxygen-rich zone to increase the oxygen content of the oxygen-rich gas.

[0027] By adopting the above technical solution, the oxygen-rich gas discharged from the centrifugal separation flow channel is returned to the corresponding centrifugal separation flow channel. Under the action of the centrifugal field, the nitrogen molecules and oxygen molecules in the oxygen-rich gas are separated and enriched for the second time, so that the nitrogen molecules are enriched in the nitrogen-rich area to increase the nitrogen content of the nitrogen-rich gas, and the oxygen molecules are enriched in the oxygen-rich area to increase the oxygen content of the oxygen-rich gas, thereby further improving the oxygen enrichment effect.

[0028] Optionally, after step S22, the following steps are also included: a plurality of static chambers are provided on the outside of the oxygen-enriched disk, a primary separation hole is provided on the side of the static chamber facing the air inlet, and a secondary separation hole is provided on the other side, and the centrifugal separation channel, the primary separation hole, the static chamber and the secondary separation hole are connected in sequence; the oxygen-rich gas in the oxygen-enriched zone is discharged from the corresponding centrifugal separation channel and discharged into the corresponding static chamber; under the action of the centrifugal field, the nitrogen molecules in the oxygen-rich gas are enriched to the side of the static chamber close to the air inlet, and flow back to the corresponding centrifugal separation channel through the primary separation hole; the oxygen molecules are enriched to the side of the static chamber away from the air inlet, and are discharged from the static chamber through the secondary separation hole.

[0029] By adopting the above technical solution, the oxygen-enriched gas discharged from the centrifugal separation flow channel is discharged into the corresponding static chamber. Under the action of the centrifugal field, the nitrogen molecules and oxygen molecules in the oxygen-enriched gas are separated again. The nitrogen molecules are enriched on the side of the static chamber close to the air inlet and flow back to the centrifugal separation flow channel, and the oxygen molecules are enriched on the side of the static chamber away from the air inlet and are discharged through the secondary separation hole. This can realize the separation and enrichment of nitrogen molecules and oxygen molecules in the oxygen-enriched gas again, further improving the oxygen enrichment effect.

[0030] Optionally, in step S2, the rotation speed of the oxygen-enriching disk is 3500 r / min to 4500 r / min.

[0031] By adopting the above technical solution, when the rotation speed range of the oxygen enrichment disk is between 3500r / min and 4500r / min, it can ensure that sufficient centrifugal force is generated during the centrifugal separation process, thereby effectively realizing the separation and enrichment of nitrogen molecules and oxygen molecules in the air.

[0032] In summary, this application includes at least one of the following beneficial technical effects: 1. The oxygen enrichment device of this application utilizes an oxygen enrichment disc and an air intake fan to separate and enrich nitrogen and oxygen molecules in the air through centrifugal separation, thereby achieving oxygen enrichment. Because the oxygen enrichment device of this application utilizes mechanical rotary separation, it does not require additional consumables, thus reducing the subsequent maintenance costs and failure rate of the oxygen enrichment fan.

[0033] 2. The oxygen enrichment equipment of the present application can separate and enrich the air multiple times through the coordinated arrangement of the oxygen enrichment disk, the primary separation ring and the secondary separation ring, which can improve the oxygen enrichment effect.

[0034] 3. The design of the oxygen enrichment process of the present application can separate and enrich nitrogen molecules and oxygen molecules in the air multiple times, thereby increasing the oxygen content of the final oxygen-enriched exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the oxygen enrichment equipment of Example 1 of the present application.

[0036] Figure 2 It is a schematic diagram of the overall structure of the oxygen enrichment disk, the suction fan and the centrifugal drive of Example 1 of the present application.

[0037] Figure 3 It is a schematic diagram of the explosion structure of the oxygen enrichment disk and the intake fan of Example 1 of the present application.

[0038] Figure 4 It is a schematic cross-sectional structural diagram of the oxygen-enriched disk of Example 1 of the present application.

[0039] Figure 5 It is a schematic diagram of the overall structure of the oxygen enrichment disk and the secondary oxygen enrichment mechanism of Example 2 of the present application.

[0040] Figure 6 It is a schematic diagram of the explosion structure of the oxygen enrichment disk and the secondary oxygen enrichment mechanism of Example 2 of the present application.

[0041] Figure 7 It is a schematic diagram of the explosion structure of the secondary oxygen enrichment mechanism of Example 2 of the present application.

[0042] Figure 8 It is a schematic cross-sectional structural diagram of the secondary oxygen enrichment mechanism of Example 2 of the present application.

[0043] Figure 9 It is a schematic diagram of the explosion structure of the oxygen-enriched disk of Example 2 of the present application.

[0044] Figure 10 It is a schematic diagram of the overall structure of the mounting ring frame of Example 2 of the present application.

[0045] In the figure, 1. oxygen enrichment disk; 11. panel; 12. back plate; 13. air inlet; 14. centrifugal separation flow channel; 15. nitrogen-enriched separation outlet; 16. centrifugal guide plate; 17. mounting ring frame; 171. inner ring; 172. outer ring; 173. first rotating guide plate; 174. second rotating guide plate; 2. suction fan; 21. fixed shaft; 22. axial guide plate; 3. centrifugal drive; 4. primary separation ring; 41 , primary separation hole; 5, secondary separation ring; 51, support plate; 52, static chamber; 53, secondary separation hole; 100, shell; 101, oxygen enrichment pipe; 102, nitrogen enrichment pipe; 103, control valve; 200, secondary oxygen enrichment mechanism; 201, face ring; 202, back ring; 203, support plate; 204, first straight groove; 205, second straight groove; 300, first sealing connection ring; 400, second sealing connection ring. DETAILED DESCRIPTION

[0046] The following is combined with Figure 1 -Attached Figure 10 , further details of this application are given.

[0047] Example 1: An oxygen enrichment device, referring to Figure 1 and Figure 2 , including a shell 100, an oxygen-enriched disk 1, and a centrifugal drive 3. The shell 100 is wrapped around the outside of the oxygen-enriched disk 1, and the centrifugal drive 3 is coaxially connected to the oxygen-enriched disk 1.

[0048] Reference Figure 2 and Figure 3 The oxygen enrichment device 100 further includes an air suction mechanism 2 , and the air suction fan 2 is coaxially connected to the oxygen enrichment disk 1 .

[0049] Reference Figure 2 and Figure 3 The oxygen enrichment disk 1 includes a panel 11 and a back panel 12, which are coaxially spaced apart. An air inlet 13 is coaxially penetrated through the panel 11. The intake fan 2 is coaxially mounted on the back panel 12, and the intake fan 2 is located in the air inlet 13. The back panel 12 is coaxially connected to the driving end of the centrifugal drive 3.

[0050] Reference Figure 3 and Figure 4A plurality of centrifugal separation flow channels 14 are formed between the panel 11 and the back panel 12. The plurality of centrifugal separation flow channels 14 are arranged in sequence along the circumference of the air inlet 13, and two adjacent centrifugal separation flow channels 14 are arranged independently of each other. One end of the centrifugal separation flow channel 14 is connected to the air inlet 13 along its own length direction, and the other end extends in a direction away from the air inlet 13 and is connected to the external space of the oxygen enrichment disk 1.

[0051] Reference Figure 2 and Figure 4 A plurality of nitrogen-rich separation outlets 15 are provided on the back plate 12 . The nitrogen-rich separation outlets 15 are arranged in one-to-one correspondence with the centrifugal separation channels 14 , and the centrifugal separation channels 14 are connected to the corresponding nitrogen-rich separation outlets 15 .

[0052] Reference Figure 1 and Figure 4 The shell 100 is connected to an oxygen-enriched pipe 101 and a nitrogen-enriched pipe 102 which are independently arranged. The oxygen-enriched pipe 101 is connected to a plurality of centrifugal separation channels 14, and the nitrogen-enriched pipe 102 is connected to a plurality of nitrogen-enriched separation outlets 15, and a control valve 103 is provided on both the oxygen-enriched pipe 101 and the nitrogen-enriched pipe 102.

[0053] In this embodiment, refer to Figure 3 The suction fan 2 includes a fixed shaft 21 , and a plurality of axial guide plates 22 are provided on the outer wall of the fixed shaft 21 . The plurality of axial guide plates 22 are arranged in sequence along the circumference of the fixed shaft 21 .

[0054] In this embodiment, refer to Figure 2 , the centrifugal drive 3 adopts an electric motor.

[0055] In this embodiment, refer to Figure 3 and Figure 4 Several centrifugal deflectors 16 are disposed between the front panel 11 and the back panel 12. One end of the centrifugal deflector 16 extends toward the air inlet 13 along its length, and the other end extends away from the air inlet 13. Both sides of the centrifugal deflector 16 in the width direction are connected to the front panel 11 and the back panel 12, respectively. Several centrifugal deflectors 16 are sequentially spaced apart along the circumference of the air inlet 13 of the front panel 11, and a centrifugal separation channel 14 is formed between two adjacent centrifugal deflectors 16.

[0056] In this embodiment, refer to Figure 3 and Figure 4 The oxygen enrichment device also includes a primary separation ring 4, which is located between the panel 11 and the back plate 12, and the panel 11, the primary separation ring 4 and the back plate 12 are coaxially arranged, and the axial ends of the primary separation ring 4 are respectively connected to the panel 11 and the back plate 12.

[0057] Reference Figure 3The centrifugal guide plates 16 are all located in the primary separation ring 4, and the ends of the centrifugal guide plates 16 away from the air inlet 13 along their own length direction are connected to the inner wall of the primary separation ring 4. Therefore, the primary separation ring 4 closes the ends of all centrifugal separation channels 14 away from the air inlet 13.

[0058] Reference Figure 3 A plurality of primary separation holes 41 are formed through the primary separation ring 4 , and each centrifugal separation channel 14 is connected to a corresponding plurality of primary separation holes 41 .

[0059] In this embodiment, refer to Figure 3 and Figure 4 The oxygen enrichment device further includes a secondary separation ring 5, which is located between the face plate 11 and the back plate 12. The face plate 11, the secondary separation ring 5, and the back plate 12 are coaxially arranged, and the axial ends of the secondary separation ring 5 are respectively connected to the face plate 11 and the back plate 12. The secondary separation ring 5 is coaxially sleeved outside the primary separation ring 4, and the primary separation ring 4 and the secondary separation ring 5 are spaced apart.

[0060] Reference Figure 3 and Figure 4 A plurality of support plates 51 are arranged between the secondary separation ring 5 and the primary separation ring 4. The length direction of the support plates 51 is arranged axially along the panel 11, and the two ends of the support plates 51 in the length direction are respectively connected to the panel 11 and the back plate 12, and the two sides of the support plates 51 in the width direction are respectively connected to the outer wall of the primary separation ring 4 and the inner wall of the secondary separation ring 5. The plurality of support plates 51 are uniformly spaced in sequence along the circumference of the secondary separation ring 5, and a static chamber 52 is formed between two adjacent support plates 51.

[0061] Reference Figure 4 A plurality of secondary separation holes 53 are formed through the secondary separation ring 5 , and each static chamber 52 is correspondingly connected to a plurality of primary separation holes 41 and a plurality of secondary separation holes 53 .

[0062] The implementation principle of the embodiment of the present application is: when oxygen enrichment is required, the oxygen enrichment device in the oxygen enrichment blower works, and the centrifugal drive 3 drives the oxygen enrichment disk 1 and the suction blower 2 to rotate coaxially at high speed.

[0063] During the rotation of the oxygen enrichment disk 1 , the suction fan 2 rotates to draw outside air into the oxygen enrichment disk 1 from the air inlet 13 , and is forcibly deflected into a high-speed swirling airflow through the axial guide plate 22 , and the high-speed swirling airflow is transported to the plurality of centrifugal separation flow channels 14 .

[0064] In the centrifugal separation flow channel 14, due to the existence of the rotating centrifugal force, a centrifugal field is formed in the centrifugal separation flow channel 14, and the air flow undergoes the first separation and enrichment of nitrogen and oxygen in the centrifugal field.

[0065] The specific principle of the initial separation and enrichment of nitrogen and oxygen is as follows: because the mass of oxygen molecules is greater than that of nitrogen molecules, the centrifugal force on oxygen molecules is greater than that on nitrogen molecules, which in turn makes the centrifugal velocity of oxygen molecules greater than that of nitrogen molecules. As a result, when the airflow flows in the centrifugal separation channel 14, oxygen molecules separate from nitrogen molecules, and oxygen molecules are enriched in the centrifugal separation channel 14 near the primary separation ring 4, thereby forming oxygen-rich gas; while nitrogen molecules are enriched in the centrifugal separation channel 14 near the air inlet 13, thereby forming nitrogen-rich gas. Therefore, this achieves the initial separation and enrichment of nitrogen and oxygen in the centrifugal separation channel 14, forming oxygen-rich and nitrogen-rich zones in the centrifugal separation channel 14.

[0066] After the first separation and enrichment of nitrogen and oxygen, the nitrogen-rich gas is discharged through the back plate 12, the corresponding nitrogen-rich separation outlet 15 and the nitrogen-rich pipe 102 in sequence, and the oxygen-rich gas rushes to the primary separation ring 4 to achieve the second separation and enrichment of oxygen and nitrogen.

[0067] The specific principle of the second separation and enrichment of oxygen and nitrogen is as follows: when the oxygen-rich gas rushes towards the primary separation ring 4, the oxygen-rich gas collides with the primary separation ring 4. At this time, the oxygen-rich gas swirls toward the air inlet 13. During the swirling flow, due to the existence of the centrifugal field, the oxygen molecules and nitrogen molecules in the swirling oxygen-rich gas are further separated, and the nitrogen molecules are enriched in the nitrogen-rich area, while the oxygen molecules are enriched in the oxygen-rich area. This can further improve the nitrogen-oxygen separation effect and the oxygen enrichment effect, thereby increasing the oxygen content of the oxygen-rich gas in the oxygen-rich area.

[0068] The oxygen enriched in the oxygen-enriched zone passes through the primary separation holes 41 on the primary separation ring 4 , so that the oxygen-enriched gas is discharged from the primary separation ring 4 .

[0069] In addition, during this process, in addition to the effect of the centrifugal field, based on the momentum difference between oxygen separation and nitrogen separation, the momentum of the nitrogen molecules is small. After the nitrogen molecules collide with the primary separation ring 4, the nitrogen molecules are rebounded to the corresponding centrifugal separation channel 14 and separated again; the momentum of the oxygen molecules is large. After the oxygen molecules collide with the primary separation ring 4, the oxygen molecules move tangentially along the primary separation ring 4, so that the oxygen molecules are still enriched in the inner wall position of the primary separation ring 4, so that the oxygen molecules can pass through the primary separation hole 41 more efficiently, thereby ensuring the oxygen content in the oxygen-rich gas discharged from the primary separation ring 4.

[0070] After the second separation and enrichment of nitrogen and oxygen, the oxygen-rich gas enters the static chamber 52 through the primary separation hole 41 to achieve the third separation and enrichment of nitrogen and oxygen.

[0071] The specific principle of the third nitrogen and oxygen separation is as follows: After the oxygen-rich gas enters the static chamber 52 through the primary separation hole 41, it undergoes a swirl within the corresponding static chamber 52. During this process, due to the continued presence of the centrifugal field, the nitrogen molecules in the oxygen-rich gas migrate toward the primary separation ring 4, while the oxygen molecules migrate toward the secondary separation ring 5, thus achieving the third separation and enrichment of nitrogen and oxygen. After this, within the static chamber 52, the oxygen-rich gas near the secondary separation ring 5 is discharged through the secondary separation hole 53, while the nitrogen-rich gas near the primary separation ring 4 flows back through the primary separation hole 41 into the corresponding centrifugal separation channel 14.

[0072] After the third separation and enrichment of nitrogen and oxygen, the oxygen-rich gas passes through the secondary separation ring 5 and is discharged from the oxygen-enriched pipe 101 .

[0073] During the above-mentioned process of discharging the oxygen-rich gas and the nitrogen-rich gas, the flow rates of the nitrogen-rich pipe 102 and the oxygen-rich pipe 101 can be adjusted by adjusting the opening and closing sizes of the two control valves 103 on the nitrogen-rich pipe 102 and the oxygen-rich pipe 101, thereby controlling the nitrogen separation concentration and the oxygen molecule concentration in the oxygen-enriching disk 1, and further regulating the nitrogen content of the discharged nitrogen-rich gas and the oxygen content of the oxygen-rich gas.

[0074] In summary, the oxygen enrichment equipment realizes the three-stage separation and enrichment of nitrogen and oxygen in the air through mechanical rotary separation, which can effectively improve the oxygen enrichment effect.

[0075] This embodiment also discloses an oxygen enrichment process of an oxygen enrichment device, comprising the following steps: S1. Air intake: Air is sucked into the oxygen enrichment disk 1 from the air inlet 13 along the axial direction of the oxygen enrichment disk 1, and the air is sent into a plurality of centrifugal separation flow channels 14. The air entering the centrifugal separation flow channels 14 flows toward the outside of the oxygen enrichment disk 1 along the length direction of the corresponding centrifugal separation flow channels 14.

[0076] Specifically, step S1 includes the following steps: S11 , axial air intake: the centrifugal driver 3 drives the air intake fan 2 to rotate, so that the air outside the oxygen enrichment disk 1 is sucked into the air inlet 13 along the axial direction of the oxygen enrichment disk 1 .

[0077] S12. Preliminary centrifugal separation and enrichment of nitrogen and oxygen: Under the action of the suction fan 2, the air sucked into the air inlet 13 is converted into a rotating airflow. The oxygen molecules in the rotating airflow are enriched in the outer layer of the rotating airflow, and the nitrogen molecules are enriched in the inner layer of the rotating airflow. The oxygen molecules and nitrogen molecules in the rotating airflow are preliminarily separated and enriched.

[0078] Specifically, the high-speed rotation of the intake fan 2 establishes a centrifugal force field in the air inlet 13. The air sucked into the oxygen-enriched disk 1 is converted into a rotating airflow under the action of the axial guide plate 22 on the intake fan 2. Under the action of the rotation of the rotating airflow itself and the centrifugal force field of the intake fan 2, the oxygen molecules and nitrogen molecules with different relative separation masses in the rotating airflow obtain different centrifugal speeds. Among them, the oxygen molecules with a larger relative molecular mass obtain a larger centrifugal speed, and the nitrogen molecules with a smaller relative molecular mass in the rotating airflow obtain a smaller centrifugal speed. As a result, the oxygen molecules are enriched in the outer layer of the rotating airflow, and the nitrogen molecules are enriched in the inner layer of the rotating airflow, and the oxygen molecules and nitrogen molecules in the rotating airflow are initially separated and enriched.

[0079] Specifically, in step S12, oxygen molecules in the outer layer of the rotating airflow are enriched to form enriched oxygen, and the oxygen content of the enriched oxygen can reach 23%. The oxygen content of the air outside the oxygen enrichment disk 1 is 21%.

[0080] S13, air supply: the air suction fan 2 rotates to deliver the rotating airflow into the plurality of centrifugal separation channels 14, and the air delivered into the centrifugal separation channels 14 flows toward the outside of the oxygen enrichment disk 1 along the length direction of the corresponding centrifugal separation channels 14.

[0081] S2. Centrifugal separation and enrichment of nitrogen and oxygen: The oxygen enrichment disk 1 is driven to rotate to establish a centrifugal field. Under the action of the centrifugal field, oxygen molecules and nitrogen molecules in the air in the centrifugal separation channel 14 are separated. The nitrogen molecules are enriched at one end of the centrifugal separation channel 14 close to the air inlet 13 to form a nitrogen-rich zone containing enriched nitrogen; and oxygen molecules are enriched at one end of the centrifugal separation channel 14 away from the air inlet 13 to form an oxygen-rich zone containing enriched oxygen.

[0082] Specifically, step S2 includes the following steps: S21, the oxygen-enriched disk 1 rotates at high speed to create a centrifugal force field.

[0083] Specifically, driven by the centrifugal driver 3 , the oxygen-enriching disk 1 rotates at a high speed, thereby establishing a centrifugal force field in the oxygen-enriching disk 1 , and thereby establishing a centrifugal force field in each centrifugal separation flow channel 14 .

[0084] Specifically, the rotation speed of the oxygen enrichment disk is 3500 r / min to 4500 r / min. Preferably, the rotation speed of the oxygen enrichment disk is 4000 r / min.

[0085] S22. Primary centrifugal separation and enrichment: The air fed into the centrifugal separation flow channel 14 flows along the length direction of the corresponding centrifugal separation flow channel 14. Under the action of the centrifugal force field, the nitrogen molecules and oxygen molecules in the air obtain different centrifugal velocities due to their different relative molecular masses. At different centrifugal velocities, the end of the centrifugal separation flow channel 14 close to the air inlet 13 forms a nitrogen-rich zone containing enriched nitrogen; the oxygen molecules are enriched to the end of the centrifugal separation flow channel 14 away from the air inlet 13 to form an oxygen-rich zone containing enriched oxygen.

[0086] Specifically, when air flows through the corresponding centrifugal separation channel 14, under the action of the centrifugal field, the oxygen molecules with a larger relative molecular mass in the air obtain a higher centrifugal velocity, while the nitrogen molecules with a smaller relative molecular mass in the air obtain a lower centrifugal velocity, thereby separating the nitrogen molecules and oxygen molecules in the air along the length direction of the corresponding centrifugal separation channel 14. Since the nitrogen molecules have a lower centrifugal velocity, they are concentrated in the nitrogen-rich region of the corresponding centrifugal separation channel 14 near the air inlet 13 to form nitrogen-rich gas. However, since the oxygen molecules have a higher centrifugal velocity, they are concentrated in the oxygen-rich region of the corresponding centrifugal separation channel 14 away from the air inlet 13 to form oxygen-rich gas.

[0087] Therefore, under the action of the centrifugal force field, the air entering the centrifugal separation flow channel 14 achieves the first nitrogen and oxygen separation and enrichment. At this time, the oxygen content in the oxygen-enriched gas in the oxygen-enriched zone can reach 28%.

[0088] S23. Secondary centrifugation separation and enrichment.

[0089] S231 , the oxygen-rich gas in the oxygen-rich zone is discharged from the corresponding centrifugal separation channel 14 .

[0090] Specifically, under the action of the centrifugal force field, the oxygen-rich gas flows toward the end of the centrifugal separation flow channel 14 , so that the oxygen-rich gas has a tendency to be discharged from the corresponding centrifugal separation flow channel 14 .

[0091] S232 , returning the oxygen-rich gas discharged from the centrifugal separation flow channel 14 to the corresponding centrifugal separation flow channel 14 .

[0092] Specifically, the oxygen-rich gas discharged from the centrifugal separation flow channel 14 directly impacts the inner wall of the primary separation ring 4. After the oxygen-rich gas impacts the inner wall of the primary separation ring 4, the oxygen-rich gas swirls away from the primary separation ring 4, thereby causing the oxygen-rich gas to swirl into the corresponding centrifugal separation flow channel 14.

[0093] S233. Under the action of the centrifugal field, the nitrogen molecules in the reflowing oxygen-rich body are enriched in the nitrogen-rich zone to increase the nitrogen content of the nitrogen-rich gas, and the oxygen molecules in the reflowing oxygen-rich body are enriched in the oxygen-rich zone to increase the oxygen content of the oxygen-rich gas.

[0094] Specifically, under the action of the centrifugal field, the nitrogen molecules and oxygen molecules in the reflowing oxygen-rich body are separated again. Due to the difference in centrifugal speed between the nitrogen molecules and the oxygen molecules, the nitrogen molecules in the oxygen-rich body are enriched in the corresponding nitrogen-rich area, which can reduce the nitrogen content in the oxygen-rich gas; the oxygen molecules in the oxygen-rich body are enriched in the corresponding oxygen-rich area, which can increase the oxygen content in the oxygen-rich gas.

[0095] The principle of separation and enrichment of nitrogen molecules and oxygen molecules in the refluxed oxygen-rich body is the same as the principle of separation and enrichment of nitrogen molecules and oxygen molecules in the air in step S22.

[0096] Therefore, step S23 realizes the second nitrogen and oxygen separation and enrichment, and at this time the oxygen content in the oxygen-rich medium in the oxygen-rich zone can reach 33%.

[0097] S24, three-stage centrifugation separation and enrichment.

[0098] S241 , the oxygen-rich gas in the oxygen-rich zone is discharged from the corresponding centrifugal separation flow channel 14 and into the corresponding static chamber 52 .

[0099] Specifically, under the synergistic effect of the centrifugal field, the internal pressure of the centrifugal separation channel 14 and the kinetic energy of the oxygen-rich gas molecules themselves, the oxygen-rich gas in the oxygen-rich zone passes through the primary separation holes 41 on the primary separation ring 4, thereby allowing the oxygen-rich gas to enter the corresponding static chamber 52.

[0100] S242. Under the action of the centrifugal field, the nitrogen molecules in the oxygen-rich gas are enriched to the side of the static chamber 52 close to the air inlet 13, and flow back to the corresponding centrifugal separation channel 14 through the primary separation hole 41; the oxygen molecules are enriched to the side of the static chamber 52 away from the air inlet 13, and are discharged from the static chamber 52 through the secondary separation hole 53.

[0101] Specifically, under the action of the centrifugal field, the nitrogen molecules and oxygen molecules in the oxygen-rich gas entering the static chamber 52 are separated again. In the static chamber 52, the nitrogen molecules are enriched near the outside of the primary separation ring 4 to form nitrogen-rich reflux gas, and the oxygen molecules are enriched to the inside of the secondary separation ring 5 to form oxygen-rich exhaust gas.

[0102] When the oxygen-rich gas enters the corresponding static chamber 52, the oxygen-rich gas will generate a swirling flow in the corresponding static chamber 52. During this swirling flow process, the reflux enriched nitrogen gas approaches the primary separation ring 4, which makes the reflux enriched nitrogen gas pass through the primary separation hole 41 and flow back into the corresponding centrifugal separation flow channel 14; the oxygen-rich exhaust gas approaches the secondary separation ring 5, which makes the oxygen-rich exhaust gas pass through the secondary separation hole 53 and be discharged outside the secondary separation ring 5.

[0103] The principle of separation and enrichment of nitrogen molecules and oxygen molecules in the oxygen-rich body entering the static chamber 52 is the same as the principle of separation and enrichment of nitrogen molecules and oxygen molecules in the air in step S22.

[0104] Therefore, step S24 realizes the third nitrogen and oxygen separation and enrichment, and at this time the oxygen content in the oxygen-enriched exhaust gas can reach 38%.

[0105] S3. Gas exhaust: Nitrogen-rich gas and oxygen-rich gas are discharged independently from the oxygen-rich disk 1.

[0106] Specifically, the nitrogen-rich gas is discharged from the corresponding nitrogen-rich separation outlet 15 into the corresponding nitrogen-rich pipe 102, and then discharged through the nitrogen-rich pipe 102. The oxygen-rich gas passes through the primary separation ring 4, the static chamber 52, the secondary separation ring 5 and the oxygen-rich pipe 101 in sequence and is discharged.

[0107] During the discharge of nitrogen-enriched and oxygen-enriched gases, the sizes of the oxygen-enriched and nitrogen-enriched gas outlets can be adjusted by regulating the two control valves 103. This allows the discharge rates of the nitrogen-enriched and oxygen-enriched gases from the oxygen-enrichment tray 1 to be regulated. When the discharge rate of the nitrogen-enriched gas decreases, more nitrogen-enriched gas will remain in the oxygen-enrichment tray 1, increasing the nitrogen content in the oxygen-enriched gas and reducing the oxygen content in the oxygen-enriched gas. This allows the oxygen content in the oxygen-enriched air discharged by the oxygen-enrichment blower to be regulated.

[0108] Therefore, in the gas discharge step, by regulating the openings of the two control valves 103 , the oxygen content in the oxygen-rich gas discharged from the oxygen-rich pipe 101 can be dynamically adjusted, and the nitrogen content in the nitrogen-rich gas discharged from the nitrogen-rich pipe 102 can also be adjusted.

[0109] The operating principle of the present embodiment is as follows: Through the aforementioned oxygen enrichment process, the rotation of the oxygen enrichment disk 1 creates a centrifugal field, which separates and enriches nitrogen and oxygen in the air in multiple steps, gradually increasing the oxygen content in the oxygen-enriched gas. Compared to existing oxygen enrichment processes, this process relies solely on mechanical structure and does not require additional consumables, thus reducing costs and improving the stability and reliability of the equipment.

[0110] Example 2: An oxygen enrichment device, referring to Figure 5 and Figure 6 The difference between this embodiment and embodiment 1 is that a secondary oxygen enrichment mechanism 200 is provided on the oxygen enrichment disk 1 .

[0111] Reference Figure 5 and Figure 7The secondary separation ring 5, support plate 51, and primary separation ring 4 are all located outside the oxygen enrichment disk 1. A back ring 202 is provided at one axial end of the secondary separation ring 5, and a face ring 201 is provided at the other end. The primary separation ring 4 is connected to the back ring 202 and face ring 201 at both axial ends, respectively. The support plate 51 is connected to the back ring 202 and face ring 201 at both longitudinal ends. The face ring 201, back ring 202, primary separation ring 4, secondary separation ring 5, and several support plates 51 together form the secondary oxygen enrichment mechanism 200.

[0112] In this embodiment, the primary separation ring 4 , the secondary separation ring 5 and the support plate 51 are all detachably connected to the face ring 201 and the back ring 202 .

[0113] Specifically, the primary separation ring 4 is connected to the inner wall of the face ring 201 and the inner wall of the back ring 202 by screws; similarly, the secondary separation ring 5 is connected to the inner wall of the face ring 201 and the inner wall of the back ring 202 by screws.

[0114] In this embodiment, refer to Figure 7 A plurality of support plates 203 are provided between the back ring 202 and the face ring 201 . The ends of the plurality of support plates 203 are detachably connected to the back ring 202 and the face ring 201 , respectively. The plurality of support plates 203 are spaced apart in sequence along the circumference of the back ring 202 .

[0115] Specifically, the back ring 202 and the face ring 201 are both connected to the support plate 203 by bolts, and opposite sides of the support plate 203 respectively contact the outer wall of the primary separation ring 4 and the inner wall of the secondary separation ring 5.

[0116] In this embodiment, refer to Figure 7 and Figure 8 The face ring 201 is provided with a plurality of first straight grooves 204, which are spaced apart along the circumference of the face ring 201. The face ring 201 is provided with a plurality of second straight grooves 205, which are arranged in a one-to-one correspondence with the second straight grooves 205, and the first straight grooves 204 and the corresponding second straight grooves 205 are arranged opposite each other along the axial direction of the back plate 12.

[0117] Reference Figure 7 and Figure 8 The number of the first straight grooves 204 is not less than the number of the support plates 51. There are multiple first straight grooves 204 corresponding to several support plates 51. One end of the support plate 51 in the length direction is plugged into the corresponding first straight groove 204, and the other end is plugged into the corresponding second straight groove 205. In addition, the two ends of the support plate 51 in the width direction respectively conflict with the outer wall of the primary separation ring 4 and the inner wall of the secondary separation ring 5.

[0118] Reference Figure 7 and Figure 8Based on the structural setting of the secondary oxygen enrichment mechanism 200, the detachable design of the secondary oxygen enrichment mechanism 200 facilitates the increase or decrease of the number of support plates 51, and further facilitates the adjustment of the size and number of the static chambers 52, which can change the oxygen enrichment capacity of the secondary oxygen enrichment mechanism 200.

[0119] Reference Figure 5 and Figure 6 The secondary oxygen enrichment mechanism 200 is detachably connected to the oxygen enrichment disk 1 .

[0120] In this embodiment, refer to Figure 5 and Figure 6 A first sealing connection ring 300 is arranged between the face ring 201 and the panel 11. The first sealing connection ring 300 is coaxially arranged with the face ring 201. The face ring 201 and the panel 11 are both connected to the first sealing connection ring 300 by bolts, and the first sealing connection ring 300 closes the gap between the face ring 201 and the panel 11.

[0121] Similarly, a second sealing connection ring 400 is arranged between the back ring 202 and the back plate 12. The second sealing connection ring 400 is coaxially arranged with the back ring 202. The back ring 202 and the back plate 12 are both connected to the second sealing connection ring 400 by bolts, and the second sealing connection ring 400 closes the gap between the back ring 202 and the back plate 12.

[0122] Reference Figure 7 and Figure 9 The oxygen enrichment disk 1 also includes a mounting ring frame 17. The panel 11, the mounting ring frame 17 and the back plate 12 are coaxially arranged in sequence, and the axial ends of the mounting ring frame 17 are respectively connected to the panel 11 and the back plate 12, and a plurality of centrifugal guide plates 16 are all installed in the mounting ring frame 17, and the two sides of the centrifugal guide plates 16 in the width direction are respectively in conflict with the panel 11 and the back plate 12.

[0123] Reference Figure 10 The mounting ring frame 17 includes two inner rings 171 and two outer rings 172. The two inner rings 171 are coaxially spaced apart. The inner rings 171 and the outer rings 172 are arranged one-to-one. The outer ring 172 is coaxially sleeved on the outside of the corresponding inner ring 171, and the inner ring 171 and the corresponding outer ring 172 are spaced apart.

[0124] Reference Figure 10 A plurality of first rotating guide plates 173 are arranged between the two inner rings 171. The plurality of first rotating guide plates 173 are arranged in sequence along the circumference of the inner ring 171. The length direction of the first rotating guide plates 173 is arranged along the axial direction of the inner ring 171. The first rotating guide plates 173 are rotatable and detachably connected to the corresponding inner ring 171 along their own length direction.

[0125] Similarly, refer to Figure 10A plurality of second rotating guide plates 174 are arranged between the two outer rings 172. The plurality of second rotating guide plates 174 are arranged in sequence along the circumference of the outer ring 172. The length direction of the second rotating guide plates 174 is arranged along the axial direction of the outer ring 172. The second rotating guide plates 174 are rotatable and detachably connected to the corresponding outer ring 172 along their own length direction.

[0126] Reference Figure 10 The centrifugal guide plates 16 are each located between the inner ring 171 and the corresponding outer ring 172, and are spaced apart along the circumference of the inner ring 171. The first rotating guide plate 173 and the second rotating guide plate 174 are disposed in a one-to-one correspondence with the centrifugal guide plates 16. One end of the centrifugal guide plate 16 along its length is detachably connected to the first rotating guide plate 173, and the other end is detachably connected to the second rotating guide plate 174.

[0127] The first rotating guide plate 173 and the second rotating guide plate 174 cooperate to install the corresponding centrifugal guide plate 16, thereby achieving the installation of multiple centrifugal guide plates 16 within the mounting ring 17. Since the first rotating guide plate 173 and the second rotating guide plate 174 are both detachably connected to the corresponding centrifugal guide plate 16, this facilitates the disassembly, assembly, and replacement of the centrifugal guide plates 16, thereby enabling the oxygen enrichment tray 1 of the present application to use different centrifugal guide plates 16, and facilitating subsequent reassembly and installation of new centrifugal guide plates 16 after the centrifugal guide plates 16 have been improved.

[0128] In this embodiment, refer to Figure 10 The first rotating guide plate 173 is arranged parallel to the end of the corresponding centrifugal guide plate 16 facing the inner ring 171, and the first rotating guide plate 173 is in contact with the end of the corresponding centrifugal guide plate 16 facing the inner ring 171. Similarly, the second rotating guide plate 174 is arranged parallel to the end of the corresponding centrifugal guide plate 16 facing the outer ring 172, and the second rotating guide plate 174 is in contact with the end of the corresponding centrifugal guide plate 16 facing the inner ring 171.

[0129] Reference Figure 9 and Figure 10 Since the first rotating guide plate 173 and the second rotating guide plate 174 are both rotatably arranged, when the centrifugal guide plate 16 is installed, the first rotating guide plate 173 and the second rotating guide plate 174 can be rotated to be parallel to the corresponding end of the centrifugal guide plate 16, which reduces the interference of the first rotating guide plate 173 and the second rotating guide plate 174 on the air flow in the corresponding centrifugal separation channel 14, thereby ensuring the nitrogen and oxygen separation and enrichment effect.

[0130] In this embodiment, two ends of the centrifugal guide plate 16 are respectively connected to the corresponding first rotating guide plate 173 and the second rotating guide plate 174 by bolts.

[0131] In this embodiment, refer to Figure 9 and Figure 10 Two outer rings 172 are coaxially connected to the front panel 11 and back panel 12, respectively, and their outer walls are flush with the outer walls of the front panel 11 and the outer walls of the back panel 12. Furthermore, one inner ring 171 is coaxially connected to the back panel 12, and the other inner ring 171 is coaxially connected to the front panel 11 or is suspended in the air. Furthermore, the air inlet 13 is coaxially arranged with the inner ring 171, and the inner diameter of the inner ring 171 is larger than the inner diameter of the inlet air.

[0132] In this embodiment, refer to Figure 7 and Figure 10 The second rotating guide plate 174 is disposed on a side away from the corresponding centrifugal guide plate 16 and close to the inner sidewall of the outer ring 172. This allows the second rotating guide plate 174 to be as close as possible to the primary separation ring 4 after the oxygen enrichment disc 1 and the secondary oxygen enrichment mechanism 200 are assembled, thereby improving the sealing between the two adjacent centrifugal separation channels 14.

[0133] In this embodiment, the connection method between the first rotating guide plate 173 and the inner ring 171 is the same as the connection method between the second rotating guide plate 174 and the outer ring 172. This embodiment is described by taking the connection method between the first rotating guide plate 173 and the inner ring 171 as an example.

[0134] Reference Figure 10 The two inner rings 171 each have a plurality of rotation grooves on opposing sides. The first rotation guide plates 173 are inserted into corresponding rotation grooves at both ends along their lengths, and the first rotation guide plates 173 are rotationally connected to the inner walls of the corresponding rotation grooves. The two inner rings 171 each have a plurality of threaded holes on opposing sides. These threaded holes correspond to the rotation grooves one by one and are coaxially connected to the corresponding rotation grooves. Bolts are inserted into these threaded holes and threadedly engaged with the corresponding first rotation guide plates 173. This connection allows the inner rings 171 and first rotation guide plates 173 to be detachably connected. When the bolts are not tightened, the first rotation guide plates 173 can rotate. When the bolts are tightened, the two inner rings 171 press against the first rotation guide plates 173, thereby securing the first rotation guide plates 173.

[0135] In this embodiment, refer to Figure 10 The number of rotating grooves and corresponding threaded holes on the inner ring 171 and the outer ring 172 is not less than the number of centrifugal guide plates 16. This allows a number of first rotating guide plates 173 to be installed between the two inner rings 171, and a number of second rotating guide plates 174 to be installed between the two outer rings 172, so that the number of centrifugal guide plates 16 in the mounting ring frame 17 and the width of the centrifugal separation channel 14 between two adjacent centrifugal guide plates 16 can be freely adjusted.

[0136] In this embodiment, refer to Figure 10The threaded holes penetrate the corresponding panel 11 and the back plate 12 at the same time, which enables the bolts to be installed on the corresponding inner ring 171 or outer ring 172 outside the panel 11 or the back plate 12, thereby locking the corresponding first rotating guide plate 173 or the corresponding second rotating guide plate 174; at the same time, this also locks the corresponding panel 11 or the back plate 12 with the mounting ring frame 17, thereby improving the stability of the oxygen enrichment disk structure.

[0137] In this embodiment, refer to Figure 9 To ensure that each centrifugal separation channel 14 is connected to at least one nitrogen-rich separation outlet 15 after increasing or decreasing the number of centrifugal guide plates 16, the length, number, and distribution of the nitrogen-rich separation outlets 15 can be adjusted accordingly. Furthermore, during actual use, a plurality of nitrogen-rich separation outlets 15 can be reserved on the back plate 12. When these nitrogen-rich separation outlets 15 are not in use, the corresponding nitrogen-rich separation outlets 15 are sealed with corresponding sealing plates. When these nitrogen-rich separation outlets 15 are needed, the corresponding sealing plates are removed. Furthermore, each centrifugal separation channel 14 can be connected to at least one nitrogen-rich separation outlet 15 by replacing a different back plate 12.

[0138] This ensures that after the number of centrifugal guide plates 16 is adjusted, each centrifugal separation channel 14 can be connected to the corresponding nitrogen-enriched separation outlet 15, thereby ensuring the normal operation of the entire oxygen-enriched disk 1.

[0139] The implementation principle of the embodiment of the present application is as follows: when the oxygen enrichment effect of the oxygen enrichment device needs to be adjusted, the secondary oxygen enrichment mechanism 200 and the oxygen enrichment disk 1 can be disassembled and separated. For the secondary oxygen enrichment mechanism 200, the number of support plates 51 can be increased or decreased to change the number and size of the static chambers 52, thereby changing the oxygen enrichment effect of the secondary oxygen enrichment mechanism 200; for the oxygen enrichment disk 1, the number of centrifugal guide plates 16 can be increased or decreased, or centrifugal guide plates 16 of different structures can be replaced, thereby adjusting the oxygen enrichment effect of the oxygen enrichment disk 1. On the one hand, this facilitates breaking the structural limitations of the oxygen enrichment device, allowing the oxygen enrichment effect of the oxygen enrichment device to have a larger adjustable range; on the other hand, after the centrifugal guide plates 16 are subsequently improved, the existing oxygen enrichment disk 1 can be easily replaced with new centrifugal guide plates 16, thereby improving the adaptability of the oxygen enrichment device to subsequent improvements; in addition, both the secondary oxygen enrichment mechanism 200 and the oxygen enrichment disk 1 are easy to disassemble, which facilitates the replacement and maintenance of parts, thereby reducing subsequent maintenance costs.

[0140] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. An oxygen enrichment device, characterized in that: include: An oxygen-enriched disk (1), wherein an air inlet (13) is provided on one axial side of the oxygen-enriched disk (1), and a plurality of nitrogen-enriched separation outlets (15) are provided on the other side; a plurality of centrifugal separation flow channels (14) are provided in the oxygen-enriched disk (1), and the plurality of centrifugal separation flow channels (14) are sequentially spaced along the circumference of the air inlet (13); one end of the centrifugal separation flow channel (14) is connected to the air inlet (13) along its own length direction, and the other end passes through the oxygen-enriched disk (1) in a direction away from the air inlet (13); the nitrogen-enriched separation outlets (15) are provided in a one-to-one correspondence with the centrifugal separation flow channels (14), and the nitrogen-enriched separation outlets (15) are connected to the corresponding centrifugal separation flow channels (14); An air intake fan (2), the air intake fan (2) is located in the air inlet (13), and the air intake fan (2) is coaxially connected to the oxygen enrichment disk (1); A centrifugal driver (3), wherein a driving end of the centrifugal driver (3) is coaxially connected to the oxygen-enriched disk (1).

2. An oxygen enrichment device according to claim 1, characterized in that: A primary separation ring (4) is coaxially sleeved outside the oxygen-enriched disk (1), and the primary separation ring (4) seals the centrifugal separation flow channel (14); A plurality of primary separation holes (41) are formed through the primary separation ring (4), and the centrifugal separation flow channel (14) is connected to the corresponding primary separation holes (41).

3. An oxygen enrichment device according to claim 2, characterized in that: A secondary separation ring (5) is coaxially sleeved outside the primary separation ring (4), and the secondary separation ring (5) is coaxially spaced from the primary separation ring (4); Both axial ends of the primary separation ring (4) and the secondary separation ring (5) are connected to the oxygen-enriched disk (1), and the oxygen-enriched disk (1) closes the space between the primary separation ring (4) and the secondary separation ring (5); a plurality of secondary separation holes (53) are provided through the secondary separation ring (5).

4. An oxygen enrichment device according to claim 3, characterized in that: A plurality of support plates (51) are provided between the primary separation ring (4) and the secondary separation ring (5), the plurality of support plates (51) are sequentially spaced along the circumference of the primary separation ring (4), and two adjacent support plates (51) are spaced to form a static chamber (52), and the two adjacent static chambers (52) are independently provided; the primary separation hole (41) and the secondary separation hole (53) are both communicated with the corresponding static chamber (52).

5. An oxygen enrichment process for an oxygen enrichment device, used for the oxygen enrichment device according to any one of claims 1 to 4, characterized in that: At least the following steps are included: S1, sucking air from the air inlet (13) into the oxygen-enriched disk (1), and sending the air into the plurality of centrifugal separation flow channels (14); S2, driving the oxygen enrichment disc (1) to rotate to establish a centrifugal force field, under the action of the centrifugal force field, nitrogen molecules and oxygen molecules in the air flowing in the centrifugal separation flow channel (14) are separated, and the nitrogen molecules are enriched in the centrifugal separation flow channel (14) to form enriched nitrogen, and the oxygen molecules are enriched in the centrifugal separation flow channel (14) to form enriched oxygen; S3. Nitrogen-rich gas and oxygen-rich gas are discharged independently from the oxygen-rich disk (1).

6. The oxygen enrichment process of the oxygen enrichment equipment according to claim 5, characterized in that: Step S1 also includes the following steps: S11, axial air intake: the air intake fan (2) rotates to draw air into the air inlet (13); S12, preliminary nitrogen and oxygen centrifugal separation and enrichment: the air intake fan (2) rotates to convert the air sucked into the air inlet (13) into a rotating airflow, the oxygen molecules in the rotating airflow are enriched in the outer layer of the rotating airflow, and the nitrogen molecules are enriched in the inner layer of the rotating airflow; S13, air supply: the air suction fan (2) rotates to deliver the rotating airflow into a plurality of centrifugal separation flow channels (14).

7. The oxygen enrichment process of the oxygen enrichment equipment according to claim 5, characterized in that: Step S2 includes the following steps: S21, the oxygen-enriched disk (1) rotates at high speed to establish a centrifugal force field; S22. The air fed into the centrifugal separation flow channel (14) flows along the length direction of the corresponding centrifugal separation flow channel (14). Under the action of the centrifugal force field, the nitrogen molecules and the oxygen molecules in the air obtain different centrifugal velocities due to their different relative molecular masses. At different centrifugal velocities, the nitrogen molecules are enriched at one end of the centrifugal separation flow channel (14) close to the air inlet (13) to form a nitrogen-rich zone containing enriched nitrogen; and the oxygen molecules are enriched at one end of the centrifugal separation flow channel (14) away from the air inlet (13) to form an oxygen-rich zone containing enriched oxygen.

8. The oxygen enrichment process of the oxygen enrichment equipment according to claim 7, characterized in that: After step S22, the following steps are also included: The oxygen-rich gas in the oxygen-rich zone is discharged from the corresponding centrifugal separation flow channel (14); reflux the oxygen-rich gas discharged from the centrifugal separation flow channel (14) into the corresponding centrifugal separation flow channel (14); Under the action of the centrifugal field, nitrogen molecules in the refluxed oxygen-rich gas are enriched in the nitrogen-rich zone to increase the nitrogen content of the nitrogen-rich gas, and oxygen molecules are enriched in the oxygen-rich zone to increase the oxygen content of the oxygen-rich gas.

9. The oxygen enrichment process of the oxygen enrichment equipment according to claim 7, characterized in that: After step S22, the following steps are also included: A plurality of static chambers (52) are provided on the outside of the oxygen-enriched disk (1), a primary separation hole (41) is provided on one side of the static chamber (52) facing the air inlet (13), and a secondary separation hole (53) is provided on the other side, and the centrifugal separation flow channel (14), the primary separation hole (41), the static chamber (52), and the secondary separation hole (53) are sequentially connected; The oxygen-rich gas in the oxygen-rich zone is discharged from the corresponding centrifugal separation flow channel (14) and discharged into the corresponding static chamber (52); Under the action of the centrifugal field, nitrogen molecules in the oxygen-rich gas are enriched on the side of the static chamber (52) close to the air inlet (13), and flow back into the corresponding centrifugal separation channel (14) through the primary separation hole (41); oxygen molecules are enriched on the side of the static chamber (52) away from the air inlet (13), and are discharged from the static chamber (52) through the secondary separation hole (53).

10. The oxygen enrichment process of the oxygen enrichment equipment according to claim 5, characterized in that: In step S2, the rotation speed of the oxygen-enriched disk (1) is 3500 r / min to 4500 r / min.

Images