A low-noise oxygen generator

Abstract

The present invention provides a low-noise oxygen generator, which relates to the field of oxygen generators. This oxygen generator includes: an oxygen generation component, which includes an intake air filtration device, an air compressor, a molecular sieve, and an oxygen storage bottle that are connected in sequence. A first noise reduction part is provided between the intake air filtration device and the intake port of the air compressor, and a second noise reduction part is provided at the nitrogen exhaust port of the molecular sieve; a noise reduction device, which is arranged circumferentially around the air compressor. The noise reduction device includes a liquid inlet channel, a damping and vibration prevention device, a control system, and a vibration sensor. The vibration sensor is arranged on the top of the air compressor. The damping and vibration prevention device includes four vibration prevention units. A liquid distribution channel and a liquid outlet channel are arranged in each vibration prevention unit. The liquid distribution channel is communicated with the liquid inlet channel, and a first electromagnetic valve is arranged at the communication point. This oxygen generator conducts adjustable control on the resonance of the machine body, greatly reducing mechanical noise. On the other hand, it also reduces the noise of gas in the whole machine pipeline.

Description

Technical Field

[0001] The present invention relates to the field of oxygen generators, and more particularly, to a low-noise oxygen generator. Background Art

[0002] In the prior art, an oxygen generator refers to a device that extracts oxygen from the air based on the pressure swing adsorption (PSA) technology. The principle is that after compressed air is purified and dried by an air purification dryer, it enters the molecular sieve through a switching valve. Then, nitrogen is adsorbed by the molecular sieve, and oxygen is uniformly collected in an oxygen storage tank. Finally, it is filtered through an odor removal, dust removal filter and a sterilization filter to obtain qualified medical oxygen. During the process of preparing oxygen by the existing oxygen generator, on the one hand, the resonance of the machine body will generate obvious mechanical movement noise. In addition, during the gas transportation process, the movement of the gas in the pipeline will further increase the equipment noise. Especially at the moment of nitrogen discharge, the instantaneous pressure is relatively large and even a blasting sound will be generated. These noises will inevitably affect the use of the oxygen generator. Therefore, there is an urgent need for a low-noise oxygen generator. On the one hand, it is necessary to perform adjustable control on the resonance of the machine body to greatly reduce the mechanical movement noise. On the other hand, it is necessary to reduce the noise of the gas in the whole machine pipeline to achieve the purpose of low noise of the whole machine. Summary of the Invention

[0003] The purpose of the present invention is to provide a low-noise oxygen generator to improve the above problems. To achieve the above purpose, the technical solutions adopted by the present invention are as follows:

[0004] A low-noise oxygen generator, the oxygen generator comprising:

[0005] An oxygen generation component, the oxygen generation component comprising an intake air filtration device, an air compressor, a molecular sieve and an oxygen storage bottle that are connected in sequence. A first noise reduction part is arranged between the intake air filtration device and the intake port of the air compressor, and a second noise reduction part is arranged at the nitrogen exhaust port of the molecular sieve; and

[0006] A noise reduction device, the noise reduction device is arranged circumferentially around the air compressor. The noise reduction device comprises a liquid inlet channel, a damping anti-vibration device, a control system and a vibration sensor. The vibration sensor is arranged on the top of the air compressor. The damping anti-vibration device comprises four anti-vibration units. A liquid distribution channel and a liquid outlet channel are arranged in each anti-vibration unit. The liquid distribution channel is communicated with the liquid inlet channel, and a first electromagnetic valve is arranged at the communication position. A second electromagnetic valve is arranged outside the liquid outlet channel. The first electromagnetic valve, the second electromagnetic valve, the vibration sensor and the control system are electrically connected.

[0007] On the other hand, the present invention also proposes a noise reduction method for a low-noise oxygen generator, the noise reduction method comprising:

[0008] A first noise reduction part is arranged between the air intake filtering device and the air intake of the air compressor, a second noise reduction part is arranged at the nitrogen exhaust port of the molecular sieve, and a noise reduction device is arranged circumferentially around the air compressor;

[0009] The external air first flows into the air intake filtering device, and then the filtered air sequentially passes through the first air intake channel and the second air intake channel of the first noise reduction part; then the air compressor compresses the air flowing out of the second air intake channel. After the vibration sensor in the noise reduction device detects a preset vibration value, the control system controls the corresponding electromagnetic valve to open and close, so that one or more anti-vibration units perform adjustable anti-vibration operations;

[0010] The compressed air enters the molecular sieve. A nitrogen concentration sensor is arranged inside the molecular sieve. When the nitrogen concentration sensor detects a preset nitrogen concentration value, the driving motor drives the rotating device to rotate to a preset noise reduction cavity, and the first channel is communicated with the first communication port, and the second channel is communicated with the second communication port to perform nitrogen exhaust noise reduction. Brief Description of the Drawings

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0012] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0013] Figure 2 is a schematic diagram of the overall structure of the present invention when the noise reduction device is not provided;

[0014] Figure 3 is a schematic diagram of the arrangement structure of the first noise reduction part, the second noise reduction part and the noise reduction device in the present invention;

[0015] Figure 4 is a schematic diagram of the internal structure of the noise reduction device of the present invention;

[0016] Figure 5 is based on Figure 4 is an enlarged structure diagram of area A;

[0017] Figure 6 is a schematic diagram of the internal structure of the first noise reduction part of the present invention;

[0018] Figure 7 is a top view structure diagram of the second noise reduction part of the present invention;

[0019] Figure 8This is based on the present invention Figure 7 Schematic diagram of the B-B cross-sectional structure;

[0020] Figure 9 Schematic diagram of the structure of the rotating device of the present invention;

[0021] Figure 10 Schematic diagram of the structure of the bottom shock absorption device of the present invention.

[0022] Markings in the figure:

[0023] 11. Intake air filtration device; 12. Air compressor; 13. Molecular sieve; 14. Oxygen storage cylinder; 2. Noise reduction device; 21. Liquid inlet channel; 22. Damping anti-vibration device; 23. Control system; 24. Vibration sensor; 210. First electromagnetic valve; 220. Liquid separation channel; 221. Liquid outlet channel; 222. Second electromagnetic valve; 223. Elastic body; 224. Magnetic backing plate; 225. Anti-vibration member; 226. Liquid filling cavity; 227. Stopper; 3. First noise reduction part; 31. First noise reduction body; 32. Second noise reduction body; 310. First sound absorption filling layer; 320. Second sound absorption filling layer; 33. Sound absorption layer; 4. Second noise reduction part; 40. Noise reduction cavity; 41. Installation housing; 42. Sealing cylinder; 43. Rotating device; 44. Driving motor; 401. First flow port; 402. Second flow port; 411. First channel; 412. Second channel; 431. Upper sealing cover; 432. Lower sealing cover; 433. Partition board; 51. Shock absorption bottom plate; 52. Elastic base; 510. Weight reduction groove; 6. Ground base; 7. Noise reduction cover. Detailed implementation manners

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the present invention claimed, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0025] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0026] The beneficial effects of the present invention are as follows:

[0027] In this oxygen generator, a first noise reduction part is arranged between the air intake filtering device and the air inlet of the air compressor, a second noise reduction part is arranged at the nitrogen exhaust port of the molecular sieve, and a noise reduction device is arranged circumferentially around the air compressor. On the one hand, this oxygen generator can perform adjustable control on the resonance of the machine body to greatly reduce mechanical movement noise, and on the other hand, it greatly reduces the noise of the gas in the whole machine pipeline, achieving the purpose of low noise of the whole machine.

[0028] Other features and advantages of the present invention will be described in the subsequent specification, and some of them will be obvious from the specification or can be understood by implementing the embodiments of the present invention.

[0029] Embodiment 1:

[0030] A low-noise oxygen generator, comprising:

[0031] An oxygen generation component, as Figure 1 , Figure 2 and Figure 3 shown, the oxygen generation component includes an air intake filtering device 11, an air compressor 12, a molecular sieve 13, and an oxygen storage bottle 14 that are connected in sequence. A first noise reduction part 3 is arranged between the air intake filtering device 11 and the air inlet of the air compressor 12, and a second noise reduction part 4 is arranged at the nitrogen exhaust port of the molecular sieve 13; and

[0032] A noise reduction device 2, as Figure 4 shown, the noise reduction device 2 is arranged circumferentially around the air compressor 12. The noise reduction device 2 includes a liquid inlet channel 21, a damping anti-vibration device 22, a control system 23, and a vibration sensor 24. The vibration sensor 24 is arranged on the top of the air compressor 12. The damping anti-vibration device 22 includes four anti-vibration units. In each anti-vibration unit, a liquid separation channel 220 and a liquid outlet channel 221 are arranged. The liquid separation channel 220 is communicated with the liquid inlet channel 21, and a first electromagnetic valve 210 is arranged at the communication position. A second electromagnetic valve 222 is arranged on the outer side of the liquid outlet channel 221. The first electromagnetic valve 210, the second electromagnetic valve 222, the vibration sensor 24 are electrically connected to the control system 23.

[0033] Since the spectrum of the intake noise generally exhibits low-frequency characteristics, in this oxygen generator, the purpose of the first noise reduction part 3 is to perform low-frequency noise reduction. At the nitrogen exhaust port, due to the large exhaust gas pressure and high gas flow velocity, the exhaust noise is mainly medium-frequency broadband noise. Therefore, the purpose of the second noise reduction part 4 is to perform medium-frequency noise reduction. In the noise reduction device 2, when the vibration sensor 24 detects a preset vibration value, the control system 23 controls the corresponding electromagnetic valve to open and close, so that single or multiple anti-vibration units perform adjustable anti-vibration operations, greatly reducing the vibration noise of the air compressor 12 body.

[0034] To clarify the specific structure of the damping anti-vibration device 22, the damping anti-vibration device 22 includes four anti-vibration units. One N-level anti-vibration unit and one S-level anti-vibration unit form an upper damping anti-vibration body, and another N-level anti-vibration unit and another S-level anti-vibration unit form a lower damping anti-vibration body;

[0035] As Figure 5 shown, each of the anti-vibration units includes an elastomer 223, a magnetic backing plate 224, and an anti-vibration member 225. A liquid filling cavity 226 is provided on one side of the magnetic backing plate 224, a retaining block 227 is provided on the other side of the magnetic backing plate 224. One end of the elastomer 223 is fixedly connected to the cavity wall of the liquid filling cavity 226, the other end of the elastomer 223 is fixedly connected to one end of the magnetic backing plate 224, the other end of the magnetic backing plate 224 is fixedly connected to the anti-vibration member 225. The liquid distribution channel 220 and the liquid outlet channel 221 communicate with the liquid filling cavity 226. Sound-absorbing cotton is provided on the outer wall of the anti-vibration member 225, and the anti-vibration member 225 is used to contact the side wall of the air compressor 12.

[0036] Among them, the purpose of the retaining block 227 is, on the one hand, to control the maximum deformation of the elastomer 223 to prevent the elastomer 223 from not being able to achieve automatic elastic recovery after the liquid discharge operation, and on the other hand, the retaining block 227 limits the magnetic backing plate 224. In addition, sealing rubber sleeves can be provided on the top and bottom of the magnetic backing plate 224 to prevent the liquid filling fluid from entering one side of the anti-vibration member 225.

[0037] A liquid outlet pipe can be provided for the liquid outlet channel 221 of each anti-vibration unit to facilitate liquid collection.

[0038] In this device, to achieve adjustable anti-vibration operations, the following working states are set:

[0039] ①. In the S-level anti-vibration unit of the upper damping anti-vibration body, a first S-level magnetic backing plate is provided, and in the N-level anti-vibration unit, a first N-level magnetic backing plate is provided;

[0040] When the vibration sensor 24 detects a first preset vibration value, the control system 23 controls the corresponding electromagnetic valves in the upper damping vibration isolator to open and close. The liquid filling chambers 226 in the upper damping vibration isolator are all filled with liquid, and the liquid filling pressure is made greater than the elastic force of the elastic body 223 until the first N - level magnetic pad and the first S - level magnetic pad reach a first vibration - damping position. The first vibration - damping position satisfies a first preset vibration - damping model, so as to reduce the resonance of the machine body to a preset range value.

[0041] Among them, the calculation formula of the first preset vibration - damping model is:

[0042] (1);

[0043] In the above formula (1), represents the first vibration - damping position; represents the liquid filling volume of the liquid filling chamber corresponding to the first preset vibration value; represents the length value of the liquid filling chamber; represents the width value of the liquid filling chamber; represents the minimum horizontal distance between the stop and the magnetic pad when the liquid filling chamber is not filled with liquid; represents the horizontal length value of the vibration isolator.

[0044] ②. In the lower damping vibration isolator, the S - level vibration - damping unit is provided with a second S - level magnetic pad, and the N - level vibration - damping unit is provided with a second N - level magnetic pad;

[0045] When the vibration sensor 24 detects a second preset vibration value, and the second preset vibration value is greater than the first preset vibration value, the control system 23 controls all the electromagnetic valves in the upper damping vibration isolator and the lower damping vibration isolator to open and close. The liquid filling chambers 226 in the upper damping vibration isolator are all filled with liquid, and the liquid filling chambers 226 in the lower damping vibration isolator are all filled with liquid, making the liquid filling pressure greater than the elastic force of the elastic body 223 until the first N - level magnetic pad and the first S - level magnetic pad reach a second vibration - damping position, and the second N - level magnetic pad and the second S - level magnetic pad reach a third vibration - damping position. The second vibration - damping position and the third vibration - damping position both satisfy a second preset vibration - damping model, so as to reduce the resonance of the machine body to a preset range value.

[0046] Among them, the calculation formula of the second preset vibration - damping model is:

[0047] (2);

[0048] In the above formula (2), represents the first vibration - damping position; represents the second vibration - damping position; represents the third vibration - damping position; represents the liquid filling volume of the liquid filling chamber in the upper damping vibration isolator; represents the liquid filling volume of the liquid filling chamber in the lower damping vibration isolator; represents the liquid filling volume of the liquid filling chamber corresponding to the second preset vibration value; represents the length value of the liquid filling chamber; represents the width value of the liquid filling chamber; represents the minimum horizontal distance between the retaining clip and the magnetic backing plate when the liquid filling chamber is not filled with liquid; represents the horizontal length value of the vibration isolator.

[0049] As Figure 6 shown, to clarify the specific structure of the first noise reduction part 3, the first noise reduction part 3 is a noise reduction box, the noise reduction box includes a first noise reduction body 31 and a second noise reduction body 32, the first noise reduction body 31 is provided with a first air inlet channel, the second noise reduction body 32 is provided with a second air inlet channel, the first air inlet channel is communicated with the second air inlet channel, a first sound absorption filling layer 310 is arranged on the outer periphery of the first air inlet channel, a second sound absorption filling layer 320 is arranged on the outer periphery of the second air inlet channel, and a sound absorption layer 33 is arranged on the wall surface of the second air inlet channel.

[0050] The first noise reduction part 3 can achieve hierarchical low-frequency sound absorption treatment. Specifically: when the air is filtered by the air inlet filtering device 11, the filtered air first flows to the first air inlet channel. Since this structure is provided with a first sound absorption filling layer 310 on the outer periphery of the first air inlet channel, the first sound absorption filling layer 310 is made of a rock wool material layer, and the rock wool material layer has a high sound absorption coefficient in the low-frequency range, and its sound absorption coefficient is usually between 0.70 and 1.00, so as to achieve efficient low-frequency sound absorption of the filtered air; then, the noise-reduced air flows to the second air inlet channel again. A second sound absorption filling layer 320 is arranged on the outer periphery of the second air inlet channel, and a sound absorption layer 33 is arranged on the wall surface of the second air inlet channel. The second sound absorption filling layer 320 is made of a glass fiber material layer, and its sound absorption coefficient is generally between 0.60 and 0.95. The sound absorption layer 33 is made of a wood sound absorption material layer, and its sound absorption coefficient is usually between 0.05 and 0.15, so as to achieve sound absorption again.

[0051] As Figure 7 、 Figure 8 and Figure 9 shown, to clarify the specific structure of the second noise reduction part 4, the second noise reduction part 4 includes a mounting shell 41, a sealing cylinder 42, a rotating device 43, a driving motor 44 and a nitrogen concentration sensor;

[0052] The installation housing 41 is provided with a first channel 411 and a second channel 412. The sealing cylinder 42 is fixedly arranged in the installation housing 41. The rotating device 43 is arranged in the sealing cylinder 42. The rotating device 43 is provided with a plurality of noise reduction zones. Each of the noise reduction zones forms a noise reduction cavity 40 with the inner wall surface of the sealing cylinder 42. Sound-absorbing cotton is arranged on the cavity wall of the noise reduction cavity 40. A first communication port 401 and a second communication port 402 are arranged in the noise reduction zone. The driving motor 44 is arranged on the top of the installation housing 41, and the output end of the driving motor 44 is in transmission connection with the rotating device 43. The nitrogen concentration sensor is arranged inside the molecular sieve 13, and the nitrogen concentration sensor is electrically connected to the driving motor 44. When the nitrogen concentration sensor detects a preset nitrogen concentration value, the driving motor 44 drives the rotating device 43 to rotate to a preset noise reduction cavity 40, and the first channel 411 is communicated with the first communication port 401, and the second channel 412 is communicated with the second communication port 402.

[0053] In the second noise reduction part 4, the volumes of different noise reduction cavities 40 can be matched and set according to the preset nitrogen concentration value to meet the requirements of efficient and flexible noise reduction.

[0054] Preferably, the rotating device 43 includes an upper sealing cover 431, a lower sealing cover 432 and an installation base. The upper sealing cover 431 is arranged on the top of the installation base, the lower sealing cover 432 is arranged on the bottom of the installation base, and the installation base is vertically provided with a plurality of partition plates 433. Two adjacent partition plates 433 and the upper sealing cover 431 and the lower sealing cover 432 form a single noise reduction zone.

[0055] In the second noise reduction part 4 to achieve a better sound reduction effect, the first channel 411 is arranged on the top of the installation housing 41, and the second channel 412 is arranged on the bottom of the installation housing 41;

[0056] Sound-absorbing cotton is arranged at the interface where the first channel 411 is communicated with the first communication port 401, and sound-absorbing cotton is arranged at the interface where the second channel 412 is communicated with the second communication port 402.

[0057] As Figure 10 shown, in this device, in order to damp the bottom of the air compressor 12 and prevent the direct transmission of vibration noise in the vertical direction of the machine body, a bottom damping device is introduced. The bottom damping device includes a damping bottom plate 51 and a plurality of elastic bases 52. The damping bottom plate 51 is provided with a weight-reducing groove 510. A plurality of mounting holes are arranged in the weight-reducing groove 510. The top of the elastic base 52 is fixedly connected in the mounting holes, and the bottom of the elastic base 52 is fixedly connected to the ground base 6.

[0058] To achieve a further noise reduction effect, a noise reduction cover 7 is introduced in this device. The noise reduction cover 7 is fixedly arranged on the vibration damping bottom plate 51. The air compressor 12 is arranged inside the noise reduction cover 7, and the damping vibration prevention device 22 is arranged circumferentially around the noise reduction cover 7. When the damping vibration prevention device 22 includes four vibration prevention units and vibration prevention members 225 are arranged in each vibration prevention unit, the vibration prevention members 225 are used to contact the side wall of the noise reduction cover 7. The noise reduction cover 7 is provided with a broad sound insulation spectrum, which can significantly reduce the propagation of noise.

[0059] Embodiment 2:

[0060] A noise reduction method for a low-noise oxygen generator, the noise reduction method includes:

[0061] A first noise reduction part 3 is arranged between the air intake filtering device 11 and the air intake of the air compressor 12, a second noise reduction part 4 is arranged at the nitrogen exhaust port of the molecular sieve 13, and a noise reduction device 2 is arranged circumferentially around the air compressor 12;

[0062] The externally connected air first flows into the air intake filtering device 11, and then the filtered air sequentially passes through the first air intake channel and the second air intake channel of the first noise reduction part 3; then the air compressor 12 compresses the air flowing out of the second air intake channel. After the vibration sensor 24 in the noise reduction device 2 detects a preset vibration value, the control system 23 controls the corresponding electromagnetic valve to open and close, so that single or multiple vibration prevention units perform adjustable vibration prevention operations;

[0063] The compressed air enters the molecular sieve. A nitrogen concentration sensor is arranged inside the molecular sieve 13. When the nitrogen concentration sensor detects a preset nitrogen concentration value, the driving motor 44 drives the rotating device 43 to rotate to a preset noise reduction cavity 40, and the first channel 411 communicates with the first communication port 401, and the second channel 412 communicates with the second communication port 402 to perform nitrogen exhaust noise reduction.

[0064] Among them, when the vibration sensor 24 in the noise reduction device 2 detects a preset vibration value, the control system 23 controls the corresponding electromagnetic valve to open and close, including:

[0065] When the vibration sensor 24 detects a first preset vibration value, the control system 23 controls the corresponding electromagnetic valve in the upper damping vibration prevention body to open and close. The liquid filling cavities 226 in the upper damping vibration prevention body are all filled with liquid, and the liquid filling pressure is greater than the elastic force of the elastic body 223 until the first N-level magnetic backing plate and the first S-level magnetic backing plate reach a first vibration damping position, and the first vibration damping position satisfies a first preset vibration damping model. Among them, the calculation formula of the first preset vibration damping model is:

[0066] (1);

[0067] In the above formula (1), represents the first damping position; represents the liquid filling volume of the liquid filling cavity corresponding to the first preset vibration value; represents the length value of the liquid filling cavity; represents the width value of the liquid filling cavity; represents the minimum horizontal distance between the retaining clip and the magnetic backing plate when the liquid filling cavity is not filled with liquid; represents the horizontal length value of the vibration prevention member.

[0068] This noise reduction method further includes:

[0069] When the vibration sensor 24 detects a second preset vibration value, and the second preset vibration value is greater than the first preset vibration value, the control system 23 controls all the electromagnetic valves in the upper damping vibration prevention body and the lower damping vibration prevention body to perform opening and closing actions. The liquid filling cavities 226 in the upper damping vibration prevention body are all filled with liquid, and the liquid filling cavities 226 in the lower damping vibration prevention body are all filled with liquid, so that the liquid filling pressure is greater than the elastic force of the elastic body 223 until the first N - pole magnetic backing plate and the first S - pole magnetic backing plate reach the second damping position, and the second N - pole magnetic backing plate and the second S - pole magnetic backing plate reach the third damping position. Both the second damping position and the third damping position satisfy the second preset damping model. Among them, the calculation formula of the second preset damping model is:

[0070] (2);

[0071] In the above formula (2), represents the first damping position; represents the second damping position; represents the third damping position; represents the liquid filling volume of the liquid filling cavity in the upper damping vibration prevention body; represents the liquid filling volume of the liquid filling cavity in the lower damping vibration prevention body; represents the liquid filling volume of the liquid filling cavity corresponding to the second preset vibration value; represents the length value of the liquid filling cavity; represents the width value of the liquid filling cavity; represents the minimum horizontal distance between the retaining clip and the magnetic backing plate when the liquid filling cavity is not filled with liquid; represents the horizontal length value of the vibration prevention member.

[0072] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0073] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. A low-noise oxygen generator device, characterized in that, Comprising: An oxygen generation component, which includes an intake air filtration device (11), an air compressor (12), a molecular sieve (13), and an oxygen storage cylinder (14) that are connected in sequence. A first noise reduction part (3) is provided between the intake air filtration device (11) and the intake port of the air compressor (12), and a second noise reduction part (4) is provided at the nitrogen exhaust port of the molecular sieve (13); and A noise reduction device (2), which is arranged circumferentially around the air compressor (12). The noise reduction device (2) includes a liquid inlet channel (21), a damping anti-vibration device (22), a control system (23), and a vibration sensor (24). The vibration sensor (24) is arranged on the top of the air compressor (12). The damping anti-vibration device (22) includes four anti-vibration units. In each anti-vibration unit, a liquid distribution channel (220) and a liquid outlet channel (221) are provided. The liquid distribution channel (220) is connected to the liquid inlet channel (21), and a first electromagnetic valve (210) is provided at the connection. A second electromagnetic valve (222) is arranged outside the liquid outlet channel (221). The first electromagnetic valve (210), the second electromagnetic valve (222), the vibration sensor (24) are electrically connected to the control system (23); Wherein, the damping anti-vibration device (22) includes four anti-vibration units. One N-level anti-vibration unit and one S-level anti-vibration unit form an upper damping anti-vibration body, and another N-level anti-vibration unit and another S-level anti-vibration unit form a lower damping anti-vibration body; Each anti-vibration unit includes an elastomer (223), a magnetic backing plate (224), and an anti-vibration member (225). A liquid filling cavity (226) is provided on one side of the magnetic backing plate (224), and a retaining block (227) is provided on the other side of the magnetic backing plate (224). One end of the elastomer (223) is fixedly connected to the cavity wall of the liquid filling cavity (226), the other end of the elastomer (223) is fixedly connected to one end of the magnetic backing plate (224), the other end of the magnetic backing plate (224) is fixedly connected to the anti-vibration member (225). The liquid distribution channel (220), the liquid outlet channel (221) are connected to the liquid filling cavity (226). Sound-absorbing cotton is provided on the outer wall of the anti-vibration member (225). The anti-vibration member (225) is used to contact the side wall of the air compressor (12).

2. The low-noise oxygen generator device according to claim 1, wherein, In the S-level anti-vibration unit of the upper damping anti-vibration body, a first S-level magnetic backing plate is provided, and in the N-level anti-vibration unit, a first N-level magnetic backing plate is provided; When the vibration sensor (24) detects a first preset vibration value, the liquid filling cavities (226) in the upper damping anti-vibration body are all filled with liquid, and the filling pressure is greater than the elastic force of the elastomer (223) until the first N-level magnetic backing plate and the first S-level magnetic backing plate reach a first vibration reduction position, and the first vibration reduction position satisfies a first preset vibration reduction model.

3. The low-noise oxygen generator device according to claim 2, wherein, In the S-level anti-vibration unit of the lower damping anti-vibration body, a second S-level magnetic backing plate is provided, and in the N-level anti-vibration unit, a second N-level magnetic backing plate is provided; When the vibration sensor (24) detects a second preset vibration value, which is greater than the first preset vibration value, the liquid filling chambers (226) in the upper damping anti-vibration body are all filled with liquid, and the liquid filling chambers (226) in the lower damping anti-vibration body are all filled with liquid, so that the liquid filling pressure is greater than the elastic force of the elastic body (223), until the first N-level magnetic pads and the first S-level magnetic pads reach the second vibration damping position, and the second N-level magnetic pads and the second S-level magnetic pads reach the third vibration damping position, and both the second vibration damping position and the third vibration damping position satisfy the second preset vibration damping model.

4. A low-noise oxygen generator device according to claim 1, characterized in that, The second noise reduction part (4) includes an installation housing (41), a sealing cylinder (42), a rotating device (43), a driving motor (44) and a nitrogen concentration sensor; The installation housing (41) is provided with a first channel (411) and a second channel (412), the sealing cylinder (42) is fixedly arranged in the installation housing (41), the rotating device (43) is arranged in the sealing cylinder (42), the rotating device (43) is provided with a plurality of noise reduction areas, and a noise reduction chamber (40) is formed between each noise reduction area and the inner wall surface of the sealing cylinder (42). Sound-absorbing cotton is arranged on the wall of the noise reduction chamber (40), and a first communication port (401) and a second communication port (402) are arranged in the noise reduction area. The driving motor (44) is arranged on the top of the installation housing (41), and the output end of the driving motor (44) is in transmission connection with the rotating device (43); the nitrogen concentration sensor is arranged inside the molecular sieve (13), and the nitrogen concentration sensor is electrically connected with the driving motor (44). When the nitrogen concentration sensor detects a preset nitrogen concentration value, the driving motor (44) drives the rotating device (43) to rotate to a preset noise reduction chamber (40), and the first channel (411) is communicated with the first communication port (401), and the second channel (412) is communicated with the second communication port (402).

5. The low-noise oxygen generator device according to claim 4, wherein, The rotating device (43) includes an upper sealing cover (431), a lower sealing cover (432) and an installation base body. The upper sealing cover (431) is arranged on the top of the installation base body, the lower sealing cover (432) is arranged on the bottom of the installation base body, and a plurality of partition plates (433) are arranged vertically on the installation base body. A single noise reduction area is formed between two adjacent partition plates (433) and the upper sealing cover (431) and the lower sealing cover (432).

6. A low-noise oxygen generator device according to claim 4, wherein, The first channel (411) is arranged on the top of the installation housing (41), and the second channel (412) is arranged on the bottom of the installation housing (41); Sound-absorbing cotton is arranged at the interface where the first channel (411) is communicated with the first communication port (401), and sound-absorbing cotton is arranged at the interface where the second channel (412) is communicated with the second communication port (402).

7. A low-noise oxygen generator device according to claim 1, characterized in that, It includes a bottom damping device, the bottom damping device includes a damping bottom plate (51) and a plurality of elastic bases (52), the damping bottom plate (51) is provided with a weight reduction groove (510), a plurality of mounting holes are provided in the weight reduction groove (510), the top of the elastic base (52) is fixedly connected in the mounting holes, and the bottom of the elastic base (52) is fixedly connected to the ground base (6).

8. A low-noise oxygen generator device according to claim 7, characterized in that, It includes a noise reduction cover (7), the noise reduction cover (7) is fixedly arranged on the damping bottom plate (51), the air compressor (12) is arranged inside the noise reduction cover (7), the damping vibration prevention device (22) is arranged in the circumferential direction of the noise reduction cover (7), when the damping vibration prevention device (22) includes four vibration prevention units and vibration prevention members (225) are arranged in each vibration prevention unit, the vibration prevention members (225) are used to contact the side wall of the noise reduction cover (7).

9. A low-noise oxygen generator device according to any one of claims 1 to 8, characterized in that, The first noise reduction part (3) is a noise reduction box, the noise reduction box includes a first noise reduction body (31) and a second noise reduction body (32), the first noise reduction body (31) is provided with a first air inlet channel, the second noise reduction body (32) is provided with a second air inlet channel, the first air inlet channel is communicated with the second air inlet channel, a first sound absorption filling layer (310) is arranged on the outer circumference of the first air inlet channel, a second sound absorption filling layer (320) is arranged on the outer circumference of the second air inlet channel, and a sound absorption layer (33) is arranged on the wall surface of the second air inlet channel.

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