Small molecular sieve oxygen generator

Abstract

The invention discloses a small molecular sieve oxygen generator, and relates to the technical field of oxygen generators, the small molecular sieve oxygen generator comprises a shell, a transversely distributed partition plate, a front dust filtration assembly, a compressor, an adsorption tower, a molecular sieve, an oxygen tank and a waste gas collection tank; the partition plate divides an inner cavity of the shell into upper and lower independent placement cavities, the front dust filtering assembly, the compressor, the adsorption tower and the molecular sieve are arranged in the lower placement cavity, and the oxygen tank and the waste gas collecting tank are arranged in the upper placement cavity; the side wall of the shell is provided with an air inlet grille communicating with the lower-layer containing cavity, the oxygen tank is connected with an external oxygen supply device through an oxygen conveying pipe, and the waste gas collecting tank communicates with the external environment through an output pipe. The air flow path is optimized, noise is isolated, and therefore vibration transmission is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of oxygen generators, in particular to a small molecular sieve oxygen generator. BACKGROUND

[0002] The small molecular sieve oxygen generator is a medical / household equipment for separating nitrogen and oxygen in air through physical adsorption principle, and the core thereof utilizes the selective adsorption characteristics of molecular sieve materials on nitrogen. A typical structure comprises a compressor, an adsorption tower and a gas separation assembly, and the volume is usually less than 0.5 m3, and the small molecular sieve oxygen generator is suitable for long-term low-flow oxygen inhalation scenes such as sleep apnea syndrome. Compared with the traditional liquid oxygen or chemical oxygen generation mode, the small molecular sieve oxygen generator has the advantages of low energy consumption, high safety and continuous operation.

[0003] The small molecular sieve oxygen generator is used by a sleep apnea syndrome patient during night sleep, and the noise (usually greater than or equal to 45 dB) generated by the compressor during the operation of the equipment affects the sleep quality, and the breathing rhythm of the patient changes (high-flow oxygen is needed during inhalation, and no oxygen is needed during exhalation), and the continuous constant oxygen supply of the oxygen generator leads to oxygen waste, and the moisture in the humidification bottle is easy to flow back to the molecular sieve adsorption tower, causing the adsorbent to be damped and invalid.

[0004] However, the existing molecular sieve oxygen generator generally has the problem of unreasonable structure layout, and the functional components are usually arranged in a plane, so that the equipment is large in size and the gas flow path is complex. Such a layout not only increases the floor area of the whole machine, but also lacks effective isolation between the noise sources such as the compressor and the gas storage device, and the vibration and noise generated during operation directly affect the user experience, especially not conducive to the use in the night environment. SUMMARY

[0005] The application provides a small molecular sieve oxygen generator, which has the effects of optimizing the gas flow path and noise isolation, and reducing vibration transmission.

[0006] The application provides a small molecular sieve oxygen generator, which adopts the following technical scheme: A small molecular sieve oxygen generator comprises a shell, a transversely distributed partition plate, a front dust filter assembly, a compressor, an adsorption tower, a molecular sieve, an oxygen tank and a waste gas collection tank. The partition plate divides the inner cavity of the shell into upper and lower independent placement cavities. The front dust filter assembly, the compressor, the adsorption tower and the molecular sieve are arranged in the lower placement cavity, and the oxygen tank and the waste gas collection tank are arranged in the upper placement cavity. The side wall of the shell is provided with an air inlet grille communicating with the lower placement cavity. The oxygen tank is connected with an external oxygen supply device through an oxygen supply pipe, and the waste gas collection tank is communicated with the external environment through an output pipe.

[0007] By adopting the technical scheme, the noise generating components such as the compressor and the adsorption tower are arranged in the lower layer, and the oxygen tank and the waste gas collecting tank are arranged in the upper layer, so that the airflow path is optimized and the noise is isolated, the vibration transmission is reduced, and the compact layout makes the device volume reduced by 30%, which is more suitable for household use. Then, the air inlet grille is directly communicated with the lower layer cavity, so as to ensure the air pretreatment efficiency.

[0008] Preferably, the front dust filtering assembly comprises an outer frame and a sealing plate, the outer frame is slidingly installed in the shell through a sliding rail, the sealing plate is arranged on one side of the outer frame and cooperates with the opening edge of the shell to seal, a sliding groove embedded with the sliding rail is arranged at the bottom of the sealing plate, and a silica gel sealing strip is embedded on the peripheral edge of the sealing plate.

[0009] By adopting the technical scheme, the front dust filtering assembly is provided with the outer frame, the sealing plate and the multi-layer filter screen, so that the quick pulling and maintenance and the air tightness are ensured, and the silica gel sealing strip is embedded with the sliding groove, so that the filter screen does not need to be disassembled when being replaced. Then, the gradient filter screen (coarse filter, medium efficiency filter and precision filter) is combined with the activated carbon adsorption layer to intercept 99% of PM2.5 and organic volatile substances.

[0010] Preferably, one side of the filter screen is provided with an adsorption layer, the adsorption layer comprises a plurality of non-woven fabric layers, and the adjacent non-woven fabric layers are filled with activated carbon, and the non-woven fabric layers and the activated carbon form an alternating stacking structure.

[0011] By adopting the technical scheme, the composite adsorption layer composed of the non-woven fabric and the activated carbon in an alternating stacking manner is provided, so that the dual effects of multi-stage filtration and deep purification are realized. The non-woven fabric layer first intercepts large particles and disperses airflow, and the activated carbon uses its developed microporous structure to efficiently adsorb small molecule gas pollutants, and the alternating stacking of the two allows the air to undergo multiple adsorption and interception processes when passing through, thereby greatly improving the purification efficiency.

[0012] Preferably, the multi-layer filter screen comprises a coarse filter screen, a medium efficiency filter screen and a precision filter screen with gradually decreasing pore sizes.

[0013] By adopting the technical scheme, the gradient filtration system composed of the coarse filter screen, the medium efficiency filter screen and the precision filter screen is provided, so that the effects of graded interception and efficient purification are realized.

[0014] Preferably, a soundproof box is arranged between the compressor and the adsorption tower, the soundproof box comprises a box body and a soundproof pipeline, a honeycomb-shaped second sponge layer is filled in the inner wall of the box body and the outer circle of the soundproof pipeline, and the soundproof pipeline is in the shape of a broken line and penetrates through the inside of the box body.

[0015] By adopting the technical scheme, the composite sound-absorbing box composed of the box body, the fold line-shaped sound-absorbing pipeline and the honeycomb-shaped second sponge layer is arranged, so that the effects of hierarchical sound absorption and airflow optimization are achieved.

[0016] Preferably, the sound-absorbing pipeline inner wall is filled with a honeycomb-shaped first sponge layer, the first sponge layer has a smaller pore diameter than the second sponge layer, and the box body has a larger cross-sectional area than the compressor outlet end.

[0017] By adopting the technical scheme, the honeycomb sponge sound-absorbing structure with a pore gradient is arranged, so that the efficient absorption of wide-band noise is achieved.

[0018] Preferably, a micro-perforated sound absorber is arranged at the compressor outlet, and a pressure relief channel in communication with the waste gas collection tank is arranged at the bottom of the adsorption tower.

[0019] By adopting the technical scheme, the micro-perforated sound absorber and the pressure relief channel are arranged in a cooperative structure, so that the dual effects of pulse noise suppression and system pressure balance are achieved.

[0020] Preferably, a third sponge layer is arranged outside the oxygen supply pipe, the third sponge layer is filled in the gap between the upper layer installation cavity and the oxygen supply pipe, and a bacterial filter is connected to the middle segment of the oxygen supply pipe.

[0021] By adopting the technical scheme, the oxygen supply pipe wrapped by the third sponge layer and the middle segment bacterial filter are arranged in a combined structure, so that the dual effects of vibration suppression and oxygen sterilization are achieved.

[0022] Preferably, a spiral metal pipeline is wrapped outside the bacterial filter, a fourth sponge layer is filled in the interior of the metal pipeline, and a buffer cavity is formed between the fourth sponge layer and the inner wall of the spiral pipeline.

[0023] By adopting the technical scheme, the spiral metal pipeline wrapping structure is arranged, so that the dual effects of mechanical protection and acoustic optimization are achieved.

[0024] Preferably, a control panel and a display screen are arranged on the side surface of the shell, the control panel and the display screen are integrated on the same horizontal plane, and the control panel includes an indication area for displaying temperature and pressure parameters.

[0025] By adopting the technical scheme, the integrated control panel and the display screen are arranged, so that the effects of simultaneous improvement of human-computer interaction efficiency and monitoring accuracy are achieved. In addition, the modular circuit design reduces the failure rate, and the third sponge layer provides vibration isolation protection for the internal circuit, so that the efficient control experience of "one-key visualization" and "touching to reach" of the equipment state is finally achieved.

[0026] In summary, the present application has the following beneficial effects: 1. In order to solve the problem of molecular sieve failure caused by dust blockage, the present application sets a sliding front dust filter assembly. The outer frame is quickly disassembled with the shell through the sliding rail, and the multi-layer gradient filter screen (coarse / medium / fine filter) is matched with the activated carbon-non-woven cloth alternating adsorption layer, which can effectively trap particulate matter. Further optimized sealing plate silica gel strip and sliding groove embedded structure, realize zero tool maintenance while ensuring air tightness, shorten the maintenance time.

[0027] 2. For the high frequency noise and airflow whistling of the compressor, the design of the broken line sound absorbing pipeline nested with honeycomb sponge layer is adopted. The first sponge layer eliminates noise above 500Hz, and the second sponge layer suppresses low frequency vibration. The subsequently added micro-perforated sound absorber controls the overall sound pressure level to 32dB, which is 40% lower than the traditional design. The design of expanding the cross-sectional area of the box further reduces the airflow velocity and reduces the turbulent noise.

[0028] 3. In order to avoid the moisture return of the humidification bottle, the spiral wrapped bacterial filter is integrated in the middle section of the oxygen delivery tube. The fourth sponge layer in the metal pipeline forms a physical isolation zone with the buffer cavity, combined with the third sponge layer filled in the gap between the lumen; realize bidirectional protection; both prevent water vapor from flowing back, and absorb pipeline vibration noise.

[0029] 4. By integrating the control panel and display screen on the same plane on the side of the shell, the seamless connection of parameter visualization and touch operation is realized. The temperature / pressure indication area uses high-contrast LED, which can still clearly read data in dark light environment. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the overall structure schematic diagram of the small molecular sieve oxygen generator in this embodiment 1; Figure 2 is the internal overall cross-sectional view of the shell in this embodiment 1; Figure 3 is the explosion structure schematic diagram between the outer frame and the shell in this embodiment 2; Figure 4 is the internal structure schematic diagram of the dust filter assembly in this embodiment 2; Figure 5 is the internal overall cross-sectional view of the sound absorbing box in this embodiment 3; Figure 6 is the internal overall cross-sectional view of the sound absorbing pipeline in this embodiment 3; Figure 7 is the connection overall structure schematic diagram between the partition plate and the third sponge layer in this embodiment 4; Figure 8 is the connection overall structure schematic diagram between the bacterial filter and the wrapped pipeline in this embodiment 4; Explanation of reference numerals in the attached drawings: 1. Shell; 2. Partition; 3. Housing cavity; 4. Air intake grille; 5. Dust filter assembly; 501. Outer frame; 502. Sealing plate; 503. Clip; 504. Filter screen; 505. Adsorption layer; 6. Compressor; 7. Adsorption tower; 8. Oxygen tank; 9. Oxygen delivery pipe; 10. Bend; 11. Face mask; 12. Waste gas collection tank; 13. Control panel; 14. Display screen; 15. Power cord; 16. Opening; 17. Silencer box; 1701. Box body; 1702. Silencer pipe; 1703. Second sponge layer; 1704. First sponge layer; 1705. Silencer; 18. Bacterial filter; 19. Third sponge layer; 20. Encasing pipe. Detailed Implementation

[0031] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0032] Example 1 This invention discloses a small molecular sieve oxygen generator, such as... Figure 1 and Figure 2 As shown, the device includes a housing 1. The internal cavity of the housing 1 is provided with horizontally distributed partitions 2, which divide the internal space of the housing 1 into two independent upper and lower housing chambers 3. The housing 1 is provided with an air intake grille 4 that communicates with the lower housing chamber 3. External air enters the lower housing chamber 3 of the housing 1 through the air intake grille 4 and passes sequentially along the airflow path through the pre-filter assembly 5, compressor 6, adsorption tower 7, and molecular sieve in the adsorption tower 7. Subsequently, oxygen and nitrogen are separated in the molecular sieve. The oxygen enters the oxygen tank 8 in the housing chamber 3 and is output through the oxygen delivery pipe 9 at the top of the oxygen tank 8 to the mask 11 connected by the bend pipe 10. The nitrogen enters the waste gas collection tank 12 in the housing chamber 3 and is discharged through the output pipe on the waste gas collection tank 12.

[0033] External air enters the lower mounting chamber 3 through the air intake grille 4 on the housing 1. First, the air passes through the pre-filter assembly 5 to remove dust, particulate matter, and impurities, ensuring the cleanliness and durability of subsequent components. This step is crucial because airborne contaminants can clog the molecular sieve pores, reducing efficiency. After pretreatment, the air is drawn in by the compressor 6 and compressed to 0.5-1.0 MPa, increasing air density and creating favorable conditions for molecular sieve adsorption. The compression process also involves a temperature increase; a cooling system is installed inside the compressor 6 to prevent overheating and damage to the components.

[0034] The compressed air enters the adsorption tower 7, which is filled with molecular sieve material. The molecular sieve has a microporous structure that selectively adsorbs nitrogen molecules, while oxygen molecules pass through smoothly. At high pressure, the molecular sieve adsorbs nitrogen; when the pressure in the tower decreases; controlled by valves; the adsorbed nitrogen is desorbed and discharged as waste gas. After separation, pure oxygen enters the downstream of the gas flow path.

[0035] The separated oxygen flows into the oxygen tank 8 in the upper installation cavity 3 for storage. The top of the oxygen tank 8 is connected to the oxygen delivery pipe 9, which delivers oxygen to the mask 11 through the elbow pipe 10 for direct inhalation by the user. At the same time, the waste gas (nitrogen) enters the waste gas collection tank 12 in the same installation cavity 3 and is safely discharged to the external environment through the output pipe. This design uses the partition 2 of the shell 1 to separate the upper and lower cavities: the lower cavity handles the intake and compression, and the upper cavity focuses on gas storage, reducing cross-contamination and optimizing space utilization. The entire system is automatically regulated by a microcontroller to ensure stable operation.

[0036] In summary, the molecular sieve oxygen generator uses the selective adsorption of nitrogen by adsorbents to achieve oxygen enrichment. Its core advantage is that it does not require chemical reactions, but relies solely on physical processes to complete the separation, with low energy consumption and environmental protection. By separating the installation cavity 3 with the transverse partition 2, the linear efficiency of the gas flow path is improved, reducing pressure drop losses, making the device more compact and suitable for small-scale applications.

[0037] A control panel 13 and a display screen 14 are provided on one side of the shell 1; the side layout allows the control panel 13 and the display screen 14 to be at the natural eye level of the user, eliminating the need to bend over or look up to view data or make settings. Specifically, the display screen 14 displays the operating status (such as temperature, pressure, energy consumption) in real time, allowing the user to observe the feedback while adjusting the parameters, achieving "operation-monitoring" integration. For example, the side screen of the intelligent panel can display the device status and operation guide simultaneously, reducing operation interruptions.

[0038] A power cord 15 is provided on the other side of the shell 1.

[0039] Example 2 As shown in Figure 3 and Figure 4 The dust removal assembly 5 includes an outer frame 501 that is slidably installed inside the shell 1 through the opening 16 on the shell 1 by a bottom slide rail, one side of the outer frame 501 is provided with a sealing plate 502, the cross-sectional size of the sealing plate 502 matches the cross-sectional size of the opening 16, the sealing plate 502 is provided with a buckle groove 503 for the finger to pass through, by pulling the sealing plate 502, the outer frame 501 is pulled out, so that the outer frame 501 is exposed outside the shell 1, The outer frame 501 is connected to the equipment shell 1 through a slide rail, which is usually made of wear-resistant alloy steel and has a hardened surface. The pull-out sealing plate 502 is embedded in the slide rail through a bottom sliding groove to form a horizontally movable modular structure. When maintenance is needed, the dust filtering assembly 5 is pulled out along the slide rail, and the entire assembly is moved out of the equipment cavity without the need to disassemble bolts or damage the seal.

[0040] The pull-out plate is circumferentially slotted and embedded with a silica gel or fluororubber sealing strip, which tightly fits the equipment frame when closed to achieve static sealing. Without the need for special tools, a single person can complete the replacement of the filter screen 504, reducing the dependence on manpower.

[0041] The upper surface of the outer frame 501 is provided with a plurality of parallel insertion slots, and the insertion slots of the outer frame 501 are sequentially provided with filter screens 504 with gradually decreasing pore sizes along the airflow path. Air passes through the multiple layers of filter screens 504 from coarse to fine, large particles are intercepted by the front coarse filter screen 504, PM10 level particles are captured by the middle filter screen 504, and PM2.5 and microorganisms are blocked by the final fine filter screen 504. The gradient design avoids direct clogging of the fine filter layer by large particles, prolongs the service life of the fine filter screen 504, and reduces airflow resistance. One side of the filter screen 504 is provided with an adsorption layer 505, which includes a plurality of layers of non-woven fabric, and the adjacent non-woven fabric layers are filled with activated carbon. The developed microporous structure of activated carbon captures gas molecules through van der Waals force, and is particularly good at adsorbing non-polar organic matter. The front filter screen 504 blocks particles to prevent the pores of activated carbon from being clogged, ensuring its adsorption efficiency.

[0042] Embodiment 3 As shown in Figure 5 , a soundproof box 17 is arranged between the output end of the compressor 6 and the input end of the adsorption tower 7. The soundproof box 17 includes a box body 1701, and the inside of the box body 1701 is provided with a soundproof pipeline 1702. The outer circle of the soundproof pipeline 1702 is filled with a honeycomb-shaped second sponge layer 1703 in the internal space of the box body 1701, and the internal pores of the first sponge layer 1704 are smaller than the internal pores of the second sponge layer 1703, As shown in Figure 5 , the internal wall of the soundproof box 17 is paved with high-efficiency porous sound-absorbing material. When compressed gas carrying sound waves enters the soundproof box 17, the sound waves repeatedly enter the surface of the sound-absorbing material during propagation. After the sound waves enter the porous structure inside the material, the air molecules in the pores vibrate and rub against the pore walls, converting sound energy into heat energy and dissipating it.

[0043] The sound attenuation box 17 generally has a larger cross-sectional area than the connecting pipe. According to the principle of fluid continuity, the flow rate of the gas after entering the sound attenuation box 17 will be significantly reduced. The reduction of the flow velocity directly reduces the noise intensity generated by turbulence, vortex shedding, etc. Moreover, the box 1701 structure itself also plays a certain sound insulation role, and forces the sound wave to be reflected and refracted multiple times, increasing the opportunity for the sound wave to contact the sound-absorbing material and improving the noise reduction efficiency.

[0044] As shown in Figure 5 and Figure 6 , the sound attenuation pipe 1702 is distributed in a zigzag shape inside the box 1701. The zigzag pipe changes the direction of the airflow multiple times, forcing the sound wave to repeatedly hit the pipe wall at the bending points. Each bending point forms an acoustic impedance mutation interface. The sound wave is reflected and interferes with each other at this point, and the effect on the low-frequency noise is particularly significant. The inner circle of the sound attenuation pipe 1702 is filled with a honeycomb-shaped first sponge layer 1704. The sound wave is prolonged in the zigzag path to increase the contact time with the sound-absorbing material, and the sound energy is converted into heat energy through friction.

[0045] As shown in Figure 5 and Figure 6 , a micro-perforated sound attenuator 1705 is arranged at the outlet of the compressor 6 to reduce the operating noise to below 32 dB, reaching the library-level silence standard.

[0046] Embodiment 4 As shown in Figure 7 and Figure 8 , a third sponge layer 19 is arranged in the installation cavity 3 on the upper surface of the partition 2. The third sponge layer 19 is filled in the outer area of the oxygen delivery pipe 9 and is used to eliminate the noise generated by the oxygen delivery pipe 9 during output. The inside of the sponge is filled with tiny pores. The sound wave generated by the flow of oxygen in the pipe will enter the pores, and the energy will be consumed after multiple reflections and scattering, and the sound wave intensity will be greatly reduced. The third sponge is soft and can wrap and fix the oxygen delivery pipe 9, absorb the vibration of the pipe caused by airflow impact and machine operation, and avoid the vibration from being converted into audible noise. The third sponge is filled outside the pipe, which can slow down the turbulence phenomenon of the airflow in the pipe and reduce the airflow noise generated by the friction between the airflow and the pipe wall when the airflow flows at high speed. Thus, it is used to greatly reduce the airflow noise and vibration noise of the oxygen generator during operation, avoid noise interference during rest and work, and is particularly suitable for night use or quiet environment.

[0047] The middle section of the oxygen delivery tube 9 is communicated with a bacteria filter 18. The core of the bacteria filter 18 is to intercept bacteria, microorganisms and other pollutants in oxygen through high-precision filter material, so as to ensure the cleanliness of the output oxygen. The outer side of the bacteria filter 18 is provided with a spiral wrapping pipeline 20, the inside of the wrapping pipeline 20 is filled with a fourth sponge layer, and the fourth sponge layer; the buffer space formed after the fourth sponge layer is filled can reduce the influence of external collision on the bacteria filter 18, and indirectly guarantee the filtering precision of the filter material. In terms of benefits, first of all, cleanliness and comfort are taken into account, the bacteria filter 18 eliminates the entry of bacteria into the human body with oxygen, and adapts to the health needs of medical, household and other scenes, and the spiral structure and sponge layer greatly reduce the airflow noise.

[0048] Working principle: First, the ambient air enters the lower installation cavity 3 through the shell 1 side wall air inlet grille 4. The louver structure of the grille preliminarily blocks large particles, and then the airflow passes through the sliding rail type dust filtering assembly 5 for three-stage purification; specifically, the coarse filter screen 504 intercepts ≥10μm particles, the medium-efficiency filter screen 504 captures PM2.5-10 microparticles, and the fine filter screen 504 removes gaseous pollutants in combination with the activated carbon adsorption layer 505. The filtered clean air is sucked into the compressor 6, and the sound attenuation box 17 plays a key role at this time; when the high-pressure airflow passes through the polyline sound attenuation pipeline 1702, the sound wave is reflected multiple times in the honeycomb sponge layer to attenuate the noise energy.

[0049] Then, the compressed air enters the adsorption tower 7, and the molecular sieve selectively adsorbs nitrogen molecules under high pressure, and oxygen is enriched. When the pressure of the adsorption tower 7 decreases to 0.2MPa, the control system switches the valve to desorb and guide the nitrogen into the waste gas collection tank 12, avoiding the dilution of oxygen concentration caused by direct emission. The oxygen-rich gas enters the oxygen tank 8 in the upper installation cavity 3 for temporary storage, and the oxygen delivery tube 9 wrapped by the third sponge layer 19 starts to work at this time; the fourth sponge layer in the spiral metal sleeve further eliminates pulsating noise.

[0050] Subsequently, the oxygen flows through the bacteria filter 18 to complete sterilization, and the gas humidified by the humidifier on the oxygen delivery tube 9 is supplied to the user through the mask 11. When the user inhales, the pressure sensor triggers the flow valve to increase the opening degree. This dynamic adjustment is realized through the breathing synchronization module of the operation panel 13, which saves oxygen compared with the constant flow mode.

[0051] Finally, the running data is fed back to the display screen 14 in real time: the parameters such as the pressure of the adsorption tower 7, the oxygen concentration, the cumulative power consumption, etc. are presented in the form of a line graph. When the filter screen 504 is blocked or the water level of the humidification bottle is too low, the system automatically pops up a maintenance prompt. The intelligent pressure relief valve of the waste gas collection tank 12 is opened when the tank pressure is >0.15MPa, and the nitrogen is released through the labyrinth sound attenuation structure to avoid the explosion noise caused by pressure surge. This whole-process optimization from air inlet purification, noise control to intelligent output makes the device improve the performance comprehensively on the premise of reducing the volume.

[0052] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A small-sized molecular sieve oxygen generator, characterized by comprising: The application relates to a shell (1), a transversely distributed partition plate (2), a front dust filter assembly (5), a compressor (6), an adsorption tower (7), molecular sieve, an oxygen tank (8) and a waste gas collecting tank (12); the partition plate (2) divides the inner cavity of the shell (1) into upper and lower independent installation cavities (3), the front dust filter assembly (5), the compressor (6), the adsorption tower (7) and the molecular sieve are arranged in the lower installation cavity (3), and the oxygen tank (8) and the waste gas collecting tank (12) are arranged in the upper installation cavity (3); the side wall of the shell (1) is provided with an air inlet grille (4) communicated with the lower installation cavity (3), the oxygen tank (8) is connected with an external oxygen supply device through an oxygen supply pipe (9), and the waste gas collecting tank (12) is communicated with the external environment through an output pipe.

2. The small-sized molecular sieve oxygen generator according to claim 1, wherein The front dust filter assembly (5) comprises an outer frame (501) and a sealing plate (502), the outer frame (501) is slidably arranged in the shell (1) through a sliding rail, the sealing plate (502) is arranged on one side of the outer frame (501) and is matched and sealed with the edge of an opening (16) of the shell (1), a sliding groove matched with the sliding rail is arranged at the bottom of the sealing plate (502), and a silica gel sealing strip is embedded in the peripheral edge of the sealing plate (502). A plurality of layers of filter screens (504) are arranged on the surface of the outer frame (501) in sequence along the airflow path.

3. The small-sized molecular sieve oxygen generator according to claim 2, wherein One side of the filter screen (504) is provided with an adsorption layer (505), the adsorption layer (505) comprises a plurality of layers of non-woven fabrics, and activated carbon is filled between adjacent non-woven fabric layers; the non-woven fabric layers and the activated carbon form an alternating stacked structure.

4. The small-sized molecular sieve oxygen generator according to claim 2, wherein The plurality of layers of filter screens (504) comprise coarse filter screens (504), medium-efficiency filter screens (504) and fine filter screens (504) with gradually reduced pore diameters.

5. The small-sized molecular sieve oxygen generator according to claim 1, wherein An acoustic box (17) is arranged between the compressor (6) and the adsorption tower (7), the acoustic box (17) comprises a box body (1701) and an acoustic pipeline (1702), a honeycomb-shaped second sponge layer (1703) is filled between the inner wall of the box body (1701) and the outer ring of the acoustic pipeline (1702), and the acoustic pipeline (1702) is in the shape of a broken line and penetrates through the inside of the box body (1701).

6. The small-sized molecular sieve oxygen generator according to claim 5, wherein The inner wall of the acoustic pipeline (1702) is filled with a honeycomb-shaped first sponge layer (1704), the pore diameter of the first sponge layer (1704) is smaller than that of the second sponge layer (1703), and the cross-sectional area of the box body (1701) is larger than that of the outlet end of the compressor (6).

7. The small-sized molecular sieve oxygen generator according to claim 1, wherein A micro-perforated silencer (1705) is arranged at the outlet of the compressor (6), and a pressure relief channel communicated with the waste gas collecting tank (12) is arranged at the bottom of the adsorption tower (7).

8. The small-sized molecular sieve oxygen generator according to claim 1, wherein A third sponge layer (19) is arranged on the outer periphery of the oxygen supply pipe (9), the third sponge layer (19) is filled in the gap between the upper installation cavity (3) and the oxygen supply pipe (9), and a bacterial filter (18) is connected to the middle segment of the oxygen supply pipe (9).

9. The small-sized molecular sieve oxygen generator according to claim 8, wherein The outer side of the bacterial filter (18) is wrapped with a spiral metal pipeline, the inside of the metal pipeline is filled with a fourth sponge layer, and a buffer cavity is formed between the fourth sponge layer and the inner wall of the spiral pipeline.

10. The small-sized molecular sieve oxygen generator according to claim 1, wherein The shell (1) is provided with a control panel (13) and a display screen (14) on the side, the control panel (13) and the display screen (14) are integrated in the same horizontal plane, and the control panel (13) comprises an indication area for displaying temperature and pressure parameters.

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