An oxygen generator

Abstract

The application discloses an oxygen generator and belongs to the field of oxygen generators. The oxygen generator comprises a machine body, a filter cavity, a pressurizing cavity, a purifying cavity and an oxygen storage cavity which are sequentially and communicatively arranged on the machine body, a molecular sieve is arranged in the middle of the purifying cavity, and isolation bins for connecting the molecular sieve with the outside are arranged on both sides of the molecular sieve. The isolation bins can form independent spaces separated from the purifying cavity. The product is used in the same way as the existing conventional products, but the molecular sieve is isolated from the purifying cavity through the isolation bins before the oxygen is output. When the oxygen is output, the adsorption performance of the molecular sieve for nitrogen can be avoided from being reduced due to the decrease of air pressure after the oxygen is output, nitrogen can be prevented from being separated from the molecular sieve and mixed into the oxygen, and the decrease of the oxygen concentration can be avoided.

Description

Technical Field

[0001] This invention discloses an oxygen generator, belonging to the field of oxygen generators. Background Technology

[0002] An oxygen generator is a purification device used to separate oxygen from the air.

[0003] Most existing oxygen generators rely on pressure swing adsorption (PSA). However, after pressurization, the purified oxygen needs to be discharged, which causes a drop in air pressure. At this time, the nitrogen adsorbed in the molecular sieve is released, resulting in a decrease in oxygen concentration.

[0004] A new solution is proposed to supplement oxygen concentrators. Summary of the Invention

[0005] The purpose of this invention is to provide an oxygen generator in order to solve the above-mentioned problems.

[0006] The present invention achieves the above-mentioned objective through the following technical solution: an oxygen generator, comprising a body, wherein a filtration chamber, a pressurization chamber, a purification chamber and an oxygen storage chamber are sequentially connected on the body, a molecular sieve is disposed in the middle of the purification chamber, and isolation chambers for communicating the molecular sieve with the outside are disposed on both sides of the purification chamber, the isolation chambers forming an independent space separated from the purification chamber.

[0007] Preferably, the isolation chamber is connected to the inner wall of the machine body via a hydraulic lifter, a storage box is provided on the outside of the molecular sieve, the storage box is fixedly connected to the machine body via a support frame, and the isolation chamber can be sealed by abutting against the support frame.

[0008] Preferably, the isolation chamber is provided with a pressure relief port that communicates with the outside world, and the pressure relief port is connected to the outside world through a corrugated hose.

[0009] Preferably, the machine body is provided with a filter screen inside the filter chamber, and an air supply pipe is provided on the upper part of the machine body in the vertical direction of the filter screen. The air supply pipe is provided with an air outlet facing the filter screen, and the air supply pipe is connected to a corrugated hose.

[0010] Preferably, the machine body is provided with a dust removal groove at the lower part of the filter screen in the vertical direction, the bottom of the dust removal groove is provided with an exhaust pipe, and the exhaust pipe is provided with an air intake hole inclined towards the exhaust pipe outlet direction.

[0011] Preferably, the machine body is provided with a sealing member on the filter chamber, the sealing member has a plurality of air inlets, and the sealing member is rotatably provided with a baffle at the air inlet.

[0012] Preferably, the machine body is provided with a centrifugal pump and a pressure relief valve in the pressurization chamber for connecting the purification chamber and the oxygen storage chamber. The pressure relief valve is provided with a pressure regulating component, which protrudes from the machine body and is exposed to the outside.

[0013] Preferably, the machine body is equipped with a vacuum pump on the outside, the air inlet of the vacuum pump is connected to a corrugated hose, and the air outlet is connected to an exhaust pipe and an air supply pipe respectively.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This product is used in the same way as existing conventional products, but before oxygen is output, the molecular sieve is isolated from the purification chamber through the isolation chamber. At this time, when oxygen is output, the pressure drop caused by oxygen output can be avoided, which would cause the molecular sieve to lose its adsorption performance for nitrogen, resulting in nitrogen being released from the molecular sieve and mixed into the oxygen, thus causing the oxygen concentration to drop. Attached Figure Description

[0015] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 2 This is a cross-sectional front view of the present invention;

[0017] Figure 3 This is a cross-sectional structural diagram of the filter state of the present invention;

[0018] Figure 4 This is a cross-sectional front view of the filtered state of the present invention.

[0019] Figure 5 This is a schematic diagram of the rear structure of the present invention.

[0020] Reference numerals in the attached drawings: 1. Body; 2. Filter chamber; 3. Purification chamber; 4. Molecular sieve; 5. Isolation chamber; 6. Pressurization chamber; 7. Pressure relief port; 8. Gas supply pipe; 9. Filter screen; 10. Ash removal tank; 11. Exhaust pipe; 12. Baffle; 13. Pressure regulating component. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. In this description, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, an oxygen generator includes a body 1. A filter chamber 2, a pressurization chamber 6, a purification chamber 3, and an oxygen storage chamber are sequentially connected on the body 1. A molecular sieve 4 is disposed in the middle of the purification chamber 3. Isolation chambers 5 are disposed on both sides of the molecular sieve 4 to allow the molecular sieve 4 to communicate with the outside. The isolation chambers 5 can form an independent space separated from the purification chamber 3. The isolation chambers 5 are connected to the inner wall of the body 1 through a hydraulic lifter. A storage box is disposed outside the molecular sieve 4. The storage box is fixedly connected to the body 1 through a support frame. The isolation chambers 5 can abut and seal against the support frame. A pressure relief port 7 is disposed on the isolation chambers 5 to communicate with the outside. The pressure relief port 7 is connected to the outside through a corrugated hose.

[0023] When using this product, starting the motor in the pressurizing chamber 6 causes the piston pump inside to slide up and down. As the piston pump slides, it pushes the one-way air inlet valve, drawing air into the pump. When the piston pump depresses, it forces the air into the purification chamber 3. As air continuously enters the purification chamber 3, it becomes highly pressurized. Under this high pressure, the molecular sieve 4's nitrogen adsorption capacity increases dramatically, adsorbing nitrogen from the air. As nitrogen is adsorbed, the nitrogen content on the surface of the molecular sieve 4 increases, while the content of free nitrogen in the air decreases. At this point, the hydraulic lift pushes the isolation chamber 5, causing it to cover the hydraulic lift, thus separating the isolation chamber 5 from the purification chamber 3. Then, opening the pressure relief port 7 connects the isolation chamber 5 to the outside via a corrugated hose. Because the isolation chamber 5 is under high pressure, the air inside quickly pushes the one-way valve to discharge. As the air is discharged, the adsorption capacity of the molecular sieve 4 decreases, causing nitrogen to precipitate and be discharged. The pressure inside the isolation chamber 5 then decreases. When the environment is the same as the outside, the lower isolation chamber 5 opens first, allowing the air below the purification chamber 3 to come into contact with the molecular sieve 4, thus bringing the molecular sieve 4 back to a high-pressure state. Then, the upper isolation chamber 5 opens. Because the air above the purification chamber 3 is simultaneously discharged into the oxygen storage chamber as the isolation chamber 5 covers the molecular sieve 4, the air pressure above the purification chamber 3 decreases. Meanwhile, due to the operation of the piston pump, air continuously enters the lower purification chamber 3. When the upper isolation chamber 5... When turned on, air quickly passes through the molecular sieve 4 and enters the purification chamber 3 located above. As the air passes through the molecular sieve 4, the nitrogen in the air is adsorbed by the molecular sieve 4, so that the air can reach the upper part of the purification chamber 3 as high-purity oxygen. When the purification chamber 3 transfers oxygen to the oxygen storage chamber, due to the separation between the molecular sieve 4 and the purification chamber 3, the molecular sieve 4 is not affected and will not release nitrogen during the oxygen transfer. This keeps the purity of oxygen at the output constant, thus making the oxygen supply purity of the product more stable.

[0024] An air supply pipe 8 is installed on the upper part of the body 1 in the vertical direction of the filter screen 9. The air supply pipe 8 has an air outlet facing the filter screen 9 and is connected to a corrugated hose. During use, this product needs to continuously draw in outside air. Impurities in the air will enter the filter chamber 2. When the air passes through the filter screen 9 in the filter chamber 2, large particles of impurities are intercepted. Over time, as impurities accumulate, the gaps in the filter screen 9 become clogged. Nitrogen gas released from the air supply pipe 8 is used to flush the filter screen 9, causing impurities on the surface of the filter screen 9 to be washed off, preventing impurities from clogging the filter screen 9. Simultaneously, the body 1... A cleaning trough 10 is provided at the lower vertical part of the filter screen 9. An exhaust pipe 11 is provided at the bottom of the cleaning trough 10. An air intake hole is provided on the exhaust pipe 11, which is inclined towards the air outlet direction. When impurities fall, they are caught by the cleaning trough 10 and then connected to the corrugated hose through the exhaust pipe 11. This allows the cleaning trough 10 to catch the impurities when the air outlet blows them away. The airflow in the exhaust pipe 11 creates a negative pressure through the air intake hole on the exhaust pipe 11, based on the principle of a vacuum generator. This negative pressure draws the impurities into the exhaust pipe 11 and discharges them with the exhaust pipe 11, thus cleaning the filter screen 9. The main body 1 has a sealing component on the filter chamber 2. The sealing component has several air inlets. A baffle 12 is rotatably installed at the air inlet of the sealing component. When the air blowing hole blows out high-pressure gas, high pressure is formed in the filter chamber 2. When the high-pressure air flows to the outside, it drives the baffle 12, thereby causing the baffle 12 to stick to the air inlet on the sealing component, achieving the effect of sealing the air inlet. At this time, impurities will fly out along the air inlet and affect the outside fresh air. After the air blowing hole blows air, the air supply pipe 8 is disconnected from the corrugated hose, so that the air blowing hole stops blowing air. At this time, the corrugated hose is connected to the exhaust pipe 11, so that a negative pressure is formed at the air intake hole, thereby sucking out the impurities. As the air pressure inside the filter chamber 2 decreases, the baffle 12 opens and fresh air is introduced. At this time, the nitrogen in the filter chamber 2 can be replaced, avoiding the excessive concentration of impurities in the filter chamber 2 due to the air blowing hole using nitrogen as the main cleaning gas, which would ultimately reduce the oxygen content in the air when the product is generating oxygen.

[0025] like Figure 4 , Figure 5 As shown, the machine body 1 is equipped with a centrifugal pump and a pressure relief valve in the pressurization chamber 6 to connect the purification chamber 3 and the oxygen storage chamber. The pressure relief valve is equipped with a pressure regulating component 13, which protrudes from the machine body 1 and is exposed to the outside. The pressure relief valve threshold is adjusted by the pressure regulating component 13 so that the pressure in the purification chamber 3 can be released after reaching a certain level. By adjusting the pressure, the oxygen concentration is finely adjusted in the reverse direction so that the oxygen can maintain the most suitable concentration when entering the oxygen storage chamber.

[0026] The body 1 is equipped with a vacuum pump on the outside. The air inlet of the vacuum pump is connected to a corrugated hose, and the air outlet is connected to the exhaust pipe 11 and the gas supply pipe 8 respectively. Through the vacuum pump, after the isolation chamber 5 isolates the molecular sieve 4, the molecular sieve 4 can be vacuumed by the vacuum pump, so that the molecular sieve 4 will discharge nitrogen. This operation can also pressurize the nitrogen, so that the blowing force of the blowing hole is greater when blowing air and the suction force of the exhaust pipe 11 is greater when exhausting air, thereby achieving a better cleaning effect.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An oxygen concentrator, comprising a body, characterized in that, The machine body is sequentially connected to a filtration chamber, a pressurization chamber, a purification chamber, and an oxygen storage chamber. A molecular sieve is arranged in the middle of the purification chamber. On both sides of the molecular sieve, there are isolation chambers for connecting the molecular sieve to the outside through openable pressure relief ports. The isolation chambers can form an independent space separated from the purification chamber or can be opened to allow the air in the purification chamber to come into contact with the molecular sieve.

2. An oxygen generator according to claim 1, characterized in that: The isolation chamber is connected to the inner wall of the machine body via a hydraulic lifter. A storage box is provided on the outside of the molecular sieve. The storage box is fixedly connected to the machine body via a support frame. The isolation chamber can be sealed by abutting against the support frame.

3. An oxygen generator according to claim 2, characterized in that: The pressure relief port is connected to the outside via a corrugated hose.

4. An oxygen generator according to claim 3, characterized in that: The machine body has a filter screen installed inside the filter chamber. An air supply pipe is installed on the upper part of the machine body in the vertical direction of the filter screen. The air supply pipe has an air outlet facing the filter screen and is connected to a corrugated hose.

5. An oxygen generator according to claim 4, characterized in that: The machine body has a dust removal groove at the lower part of the filter screen in the vertical direction. The bottom of the dust removal groove is provided with an exhaust pipe, and the exhaust pipe is provided with an air intake hole that is inclined towards the exhaust pipe outlet direction.

6. An oxygen generator according to claim 5, characterized in that: The machine body is provided with a sealing component on the filter chamber, and the sealing component has several air inlets. A baffle is rotatably provided at the air inlet of the sealing component.

7. An oxygen generator according to claim 1, characterized in that: The machine body is equipped with a centrifugal pump and a pressure relief valve inside the pressurization chamber for connecting the purification chamber and the oxygen storage chamber. The pressure relief valve is equipped with a pressure regulating component, which protrudes from the machine body and is exposed to the outside.

8. An oxygen generator according to claim 5, characterized in that: The machine body is equipped with a vacuum pump on the outside. The air inlet of the vacuum pump is connected to a corrugated hose, and the air outlet is connected to an exhaust pipe and an air supply pipe, respectively.

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