Oxygen generator silencing system and oxygen generator

Abstract

The utility model is suitable for the technical field of oxygenerators, and provides an oxygenerator silencing system which comprises a compressor box body, a first nitrogen discharge silencer and a second nitrogen discharge silencer, wherein the first nitrogen discharge silencer and the second nitrogen discharge silencer are used for carrying out silencing treatment on nitrogen-rich waste gas; the compressor air inlet silencer is arranged in the compressor box body, a plurality of silencing cavities which are sequentially communicated are formed in the compressor air inlet silencer, an air inlet channel is formed in a first silencing cavity located at the head end of the airflow direction in the silencing cavities, and an air outlet channel is formed in a second silencing cavity located at the tail end of the airflow direction in the silencing cavities; the second silencing cavity is of a protruding structure on the side face, facing a compressor, of the compressor air inlet silencer body. And other silencing cavities, except the second silencing cavity, of the air inlet silencer are filled with silencing materials. According to the scheme, the silencing effect can be improved through the arrangement of the multiple stages of silencers, meanwhile, the air outlet channel is not prone to being blocked by silencing cotton due to the design of the protruding structure at the air outlet end of the compressor air inlet silencer, the maintenance frequency is reduced, and the silencing effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oxygen generators, and particularly relates to an oxygen generator sound insulation system and an oxygen generator. Background Art

[0002] An oxygen generator is a device for producing oxygen, which uses air separation technology to produce oxygen. Specifically, with an air compressor as the power, the air is compressed and then the nitrogen and oxygen in the air are separated through the adsorption performance of a molecular sieve, and finally high-concentration oxygen is obtained. Small medical oxygen generators have been popularized in hospitals and ordinary families for oxygen inhalation treatment or health care; in these application scenarios, the oxygen generator needs to maintain a relatively low working sound level, so as to improve the user experience and enable the oxygen generator to be further popularized in low-noise usage environments.

[0003] When the oxygen generator is running, large noises will be generated when the gas flows through the internal components of the oxygen generator. At present, in order to reduce noise, a large amount of sound-absorbing cotton is filled in the noise reduction device to reduce the noise of the intake and exhaust of the oxygen generator. However, the extensive use of sound-absorbing cotton often blocks key channels, resulting in poor sound absorption effect. Summary of the Utility Model

[0004] The purpose of the embodiment of the present application is to provide an oxygen generator sound insulation system, aiming to solve the problem of poor sound absorption effect of the existing oxygen generator sound insulation device.

[0005] The embodiment of the present application is implemented as follows. An oxygen generator sound insulation system includes:

[0006] A compressor box body;

[0007] A first nitrogen exhaust silencer and a second nitrogen exhaust silencer for sound insulation treatment of nitrogen-rich waste gas; and

[0008] A compressor intake silencer disposed in the compressor box body, and a plurality of sound insulation cavities are formed inside the compressor intake silencer and are sequentially communicated. An intake channel is provided in the first sound insulation cavity at the head end of the air flow direction, and an outlet channel is provided in the second sound insulation cavity at the tail end of the air flow direction;

[0009] Wherein, the second sound insulation cavity is a convex structure on the side of the compressor intake silencer body facing the compressor; sound insulation materials are filled in other sound insulation cavities of the intake silencer except the second sound insulation cavity.

[0010] Preferably, both the first sound insulation cavity and the second sound insulation cavity are located at the upper part of the compressor intake silencer, and are isolated by a baffle and are arranged on both sides of the compressor intake silencer;

[0011] The communication channels between the multiple sound-absorbing cavities of the compressor intake muffler are arranged such that the airflow direction starts from the intake channel, first extends downward to the bottom of the compressor intake muffler, and then extends upward to the outlet channel.

[0012] Preferably, the outlet channel is opened in the middle or upper part of the side surface of the second sound-absorbing cavity, and the outlet channel is parallel to the main body of the compressor intake muffler and faces the first sound-absorbing cavity side.

[0013] Preferably, a separation net is provided between the second sound-absorbing cavity and the sound-absorbing cavity of the main body of the compressor intake muffler.

[0014] Preferably, the bottom surface of the compressor housing is provided with a downwardly concave accommodation space on the side where the compressor intake muffler is located, and the bottom of the compressor muffler is placed in the accommodation space.

[0015] Preferably, all or part of the first nitrogen exhaust muffler is arranged inside the compressor housing;

[0016] The second nitrogen exhaust muffler is connected to the first nitrogen exhaust muffler and is arranged inside the compressor housing;

[0017] Among them, the nitrogen-rich waste gas passes through the first nitrogen exhaust muffler and the second nitrogen exhaust muffler in sequence and then enters the compressor housing, and is discharged through the exhaust port at the bottom of the compressor housing.

[0018] Preferably, the first nitrogen exhaust muffler, the second nitrogen exhaust muffler, and the compressor intake muffler are all arranged on the same side of the compressor housing;

[0019] The nitrogen exhaust port of the second nitrogen exhaust muffler faces the outer shell of the first nitrogen exhaust muffler, and a diversion slope is formed at the position of the first nitrogen exhaust muffler opposite to the nitrogen exhaust port of the second nitrogen exhaust muffler.

[0020] Preferably, a plurality of first wind-blocking structures are arranged inside the first nitrogen exhaust muffler to divide the interior of the first nitrogen exhaust muffler into a plurality of sequentially connected sound-absorbing units; each sound-absorbing unit is filled with sound-absorbing material; the intake port of the first muffler is arranged upward, and the outlet port is arranged downward.

[0021] Preferably, a plurality of second wind-blocking structures are arranged inside the second nitrogen exhaust muffler to divide the interior of the second nitrogen exhaust muffler into a plurality of sequentially connected sound-absorbing units; each sound-absorbing unit is filled with sound-absorbing material;

[0022] The intake port and the outlet port of the second nitrogen exhaust muffler are arranged on both sides of its upper side surface;

[0023] A relief groove is provided on one side of the second row of nitrogen silencers close to the compressor.

[0024] Another object of the embodiment of the present application is to provide an oxygen generator, which includes the oxygen generator silencing system described above.

[0025] The oxygen generator silencing system provided in the embodiment of the present application includes multi-stage silencing, that is, a compressor intake silencer at the front end, and a first row of nitrogen silencers and a second row of nitrogen silencers at the rear end for silencing the nitrogen-rich waste gas; through the multi-stage silencing setting, the working noise of the oxygen generator can be greatly reduced. At the same time, in the compressor intake silencer, the second silencing cavity is set as a convex structure on the main body of the compressor intake silencer, and no silencing material is filled therein. In this way, after the air flow circulates in the main body of the compressor intake silencer and enters the second silencing cavity, it needs to change the flow direction, and it is difficult for the sound-absorbing cotton to turn and enter the second silencing cavity even if it is slightly driven by the air flow, thus avoiding blocking the air outlet channel. Through the above structural design of the air outlet end of the compressor intake silencer, its air outlet channel is not easily blocked, which not only reduces the cleaning and maintenance frequency, but also improves the silencing effect. Description of the Drawings

[0026] Figure 1 It is an exploded view of an oxygen generator including an oxygen generator silencing system provided by an embodiment of the present application;

[0027] Figure 2 It is an overall layout view of an oxygen generator silencing system provided by an embodiment of the present application;

[0028] Figure 3 It is an external view of the compressor intake silencer provided by an embodiment of the present application facing the compressor side;

[0029] Figure 4 It is an internal view of the compressor intake silencer provided by an embodiment of the present application;

[0030] Figure 5 It is a structure diagram of an oxygen generator provided by an embodiment of the present application for showing the accommodation space at the bottom of the compressor box;

[0031] Figure 6 It is a schematic internal structure diagram of the first row of nitrogen silencers provided by an embodiment of the present application;

[0032] Figure 7 It is a schematic internal structure diagram of the second row of nitrogen silencers provided by an embodiment of the present application. Detailed Description of the Embodiment

[0033] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0034] The following describes the specific implementation of the present application in detail with reference to specific embodiments.

[0035] As Figures 1 to 7 shown, a noise elimination system for an oxygen generator provided by an embodiment of the present application, referring to Figures 1 to 4 , the noise elimination system for the oxygen generator includes:

[0036] A compressor box body 100;

[0037] A first nitrogen discharge muffler 200 and a second nitrogen discharge muffler 300 for noise elimination treatment of nitrogen-rich waste gas; and

[0038] A compressor intake muffler 400 disposed in the compressor box body 100, and a plurality of muffling chambers communicating with each other in sequence are formed inside the compressor intake muffler 400. An intake passage 411 is provided in a first muffling chamber 410 at the head end in the air flow direction, and an air outlet passage 421 is provided in a second muffling chamber 420 at the tail end in the air flow direction;

[0039] Wherein, the second muffling chamber 420 is a convex structure on the side surface of the compressor intake muffler main body 430 facing the compressor 500; and muffling materials (not shown in the figure) are filled in other muffling chambers of the compressor intake muffler 400 except the second muffling chamber 420.

[0040] In this embodiment, the compressor intake muffler main body 430 has a flat cuboid structure, one of its flat sides faces the compressor 500, and the other flat side is close to the side wall of the compressor box body 100 (a muffling interlayer can be provided between the close surfaces of the two); wherein the second muffling chamber 420 is provided on the flat side facing the compressor 500, which is convenient for the pipeline layout between the air outlet passage 421 and the intake port of the compressor 500.

[0041] In this embodiment, the compressor intake muffler 400 is filled with sound-absorbing material, i.e., sound-absorbing cotton; after the air flow passes through the compressor intake muffler 400, it will be further introduced into the compressor. Since the flow rate of the intake air flow is relatively fast, it is easy to carry the sound-absorbing cotton in the compressor intake muffler 400 towards the air outlet passage 421. Therefore, in the embodiment of the present application, the second sound-absorbing cavity 420 is set as a convex structure on the compressor intake muffler main body 430, and it is not filled with sound-absorbing material. In this way, after the air flow circulates in the compressor intake muffler main body 430 and enters the second sound-absorbing cavity 420, it needs to change its flow direction. Even if the sound-absorbing cotton is slightly driven by the air flow, it is difficult to turn and enter the second sound-absorbing cavity, thus avoiding blocking the air outlet passage 421.

[0042] In the above embodiment of the present application, the oxygen generator sound-absorbing system includes multiple stages of sound absorption, namely, the compressor intake muffler located at the front end, and the first nitrogen discharge muffler and the second nitrogen discharge muffler located at the rear end for sound-absorbing the nitrogen-rich waste gas; through the multi-stage sound-absorption setting, the working noise of the oxygen generator can be greatly reduced. At the same time, through the structural design of the air outlet end of the compressor intake muffler, its air outlet passage is not easily blocked, which not only reduces the cleaning and maintenance frequency, but also improves the sound-absorbing effect.

[0043] In a preferred embodiment of the present application, as Figure 4 shown, both the first sound-absorbing cavity 410 and the second sound-absorbing cavity 420 are located at the upper part of the compressor intake muffler 400, and the two are isolated by a baffle and are arranged on both sides of the compressor intake muffler 400; the communication channels between the multiple sound-absorbing cavities of the compressor intake muffler 400 are set such that the air flow direction starts from the intake passage 411, first extends downward to the bottom of the compressor intake muffler 400, and then extends upward to the air outlet passage 421. It can be understood that the air flow direction forms a long loop in the compressor intake muffler 400, which can make full use of the sound-absorbing cotton in the internal space for sound absorption as much as possible. Moreover, the second sound-absorbing cavity is located at the upper part of the compressor intake muffler 400, and with its convex structure design, it can further prevent the sound-absorbing cotton from being carried upward into the second sound-absorbing cavity, avoiding blocking the air outlet passage and avoiding affecting the sound-absorbing effect and blocking the air flow.

[0044] In a preferred embodiment of the present application, the air outlet passage 421 is opened in the middle or upper part of the side surface of the second sound-absorbing cavity 420, which can further avoid blockage caused by possible sound-absorbing cotton. The air outlet passage 421 is parallel to the compressor intake muffler main body 430 and faces the first sound-absorbing cavity 410 side. On the one hand, this can facilitate the pipeline connection with the compressor; on the other hand, compared with the other several side surfaces, the possibility of the air outlet passage 421 being blocked by the sound-absorbing cotton on this side surface is the smallest.

[0045] In a preferred embodiment of the present application, a separation net (not shown in the figure) is provided between the second sound absorption cavity 420 and the sound absorption cavity of the main body 430 of the compressor intake muffler; specifically, a separation net is provided between the sound absorption cavity communicating with the second sound absorption cavity 420 and the second sound absorption cavity 420, so as to physically block the movement of large pieces of sound absorption cotton into the second sound absorption cavity 420.

[0046] In a preferred embodiment of the present application, as shown in FIGS. 2 and 5, a downwardly recessed accommodation space 110 is provided on the bottom surface of the compressor housing 100 on the side where the compressor intake muffler 400 is located, and the bottom of the compressor muffler 400 is placed in the accommodation space 110. It can be understood that the provision of the accommodation space 110 can increase the length dimension of the compressor intake muffler 400 in the up and down direction, enabling it to break through the size limitation of the internal space of the compressor housing 100, thereby increasing the effective sound absorption size inside the compressor intake muffler 400 and greatly improving the sound absorption effect.

[0047] In an embodiment of the present application, all or part of the first nitrogen discharge muffler 200 is provided inside the compressor housing 100; the second nitrogen discharge muffler 300 is connected to the first nitrogen discharge muffler 200 and is provided inside the compressor housing 100; wherein, the nitrogen-rich waste gas passes through the first nitrogen discharge muffler 200 and the second nitrogen discharge muffler 300 in sequence and then enters the compressor housing 100, and is discharged through the exhaust port at the bottom of the compressor housing 100. It can be understood that in this embodiment, most of the first nitrogen discharge muffler 200 and the second nitrogen discharge muffler 300 are located inside the compressor housing, and the compressor housing 100 can further insulate the sound; in addition, the nitrogen-rich waste gas can finally be discharged through the exhaust facilities at the bottom of the compressor housing 100.

[0048] In an embodiment of the present application, as Figure 1 shown, the first nitrogen discharge muffler 200, the second nitrogen discharge muffler 300, and the compressor intake muffler 400 are all provided on the same side of the compressor housing 100; by concentrating the three mufflers on one side of the compressor housing 100, the noise sources can be concentrated as much as possible in this area, thereby facilitating sound insulation protection for the periphery of this area, for example, laying a sound insulation layer on this area as a key point.

[0049] In a preferred embodiment of the present application, as Figure 1 、 2As shown in FIGS. 6, the nitrogen discharge port 310 of the second row of nitrogen mufflers 300 faces the housing of the first row of nitrogen mufflers. A diversion slope 210 is formed at the position of the first row of nitrogen mufflers 200 opposite to the nitrogen discharge port 310 of the second row of nitrogen mufflers 300. The nitrogen discharge port 310 of the second row of nitrogen mufflers 300 is arranged upward. The first row of nitrogen mufflers 200 is exactly above it, and the position of the first row of nitrogen mufflers 200 opposite to the nitrogen discharge port 310 is an arc-shaped diversion slope 210, which can divert the nitrogen-rich exhaust gas output from the nitrogen discharge port 310, promote its dispersion, and thus improve the silencing effect.

[0050] In an embodiment of the present application, as Figure 6 shown, a plurality of first wind-blocking structures 220 are arranged inside the first row of nitrogen mufflers to respectively divide the interior of the first row of nitrogen mufflers into a plurality of sequentially connected silencing units; each silencing unit is filled with silencing material (not shown in the figure);

[0051] The first air inlet 230 of the first muffler is arranged upward, and the first air outlet 240 is arranged downward.

[0052] In an embodiment of the present application, as Figure 7 shown, a plurality of second wind-blocking structures 320 are arranged inside the second row of nitrogen mufflers to respectively divide the interior of the second row of nitrogen mufflers into a plurality of sequentially connected silencing units; each silencing unit is filled with silencing material (not shown in the figure);

[0053] The second air inlet 330 of the second row of nitrogen mufflers and the nitrogen discharge port 310 are arranged on both sides of its upper side;

[0054] A relief groove 340 is arranged on one side of the second row of nitrogen mufflers 300 close to the compressor 500, and the relief groove 340 fits with the compressor mounting seat.

[0055] In an embodiment of the present application, the nitrogen discharge port 310 of the second row of nitrogen mufflers is set as a porous structure to avoid too fast exhaust speed, and exhaust silencing material can be further arranged above its outer side. The exhaust silencing material can be carried and fixed through an appropriate structure.

[0056] In an embodiment of the present application, an oxygen generator is further provided, and the oxygen generator includes the oxygen generator silencing system described in any one of the above embodiments.

[0057] The oxygen generator silencing system provided in the above text embodiment of the present application includes multiple stages of silencing, namely, a compressor intake silencer located at the front end, and a first nitrogen discharge silencer and a second nitrogen discharge silencer located at the rear end for silencing the nitrogen-rich waste gas; through the multi-stage silencing setting, the working noise of the oxygen generator can be greatly reduced. At the same time, in the compressor intake silencer, the second silencing cavity is set as a convex structure on the compressor intake silencer body, and no silencing material is filled therein. In this way, after the air flow circulates in the compressor intake silencer body and enters the second silencing cavity, it needs to change the flow direction, and it is difficult for the sound-absorbing cotton to turn and enter the second silencing cavity even if it is slightly driven by the air flow, thus avoiding blocking the air outlet channel. Through the above structural design of the air outlet end of the compressor intake silencer, its air outlet channel is not easily blocked, which not only reduces the frequency of cleaning and maintenance, but also improves the silencing effect.

[0058] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An oxygen concentrator silencing system, comprising a compressor housing, characterized in that: Also includes: A first row nitrogen silencer and a second row nitrogen silencer for silencing nitrogen-rich exhaust gas; as well as A compressor intake silencer is arranged in the compressor housing, wherein a plurality of silencer chambers connected in sequence are formed inside the compressor intake silencer, wherein a first silencer chamber located at the head end in the air flow direction of the plurality of silencer chambers is provided with an air intake passage, and a second silencer chamber located at the end in the air flow direction is provided with an air outlet passage; The second silencer cavity is a protruding structure on the side of the compressor intake silencer body facing the compressor; and all the other silencer cavities of the intake silencer except the second silencer cavity are filled with silencer materials.

2. The oxygen concentrator silencing system according to claim 1, characterized in that: The first muffler cavity and the second muffler cavity are both located at the upper part of the compressor intake muffler, separated by a baffle and arranged on both sides of the compressor intake muffler; The connecting passages between the multiple silencer chambers of the compressor intake silencer are configured such that the air flow direction starts from the intake passage, first extends downward to the bottom of the compressor intake silencer, and then extends upward to the outlet passage.

3. The oxygen concentrator silencing system according to claim 2, characterized in that: The air outlet passage is opened in the middle or upper part of the side of the second muffler chamber, and the air outlet passage is parallel to the main body of the compressor intake muffler and faces one side of the first muffler chamber.

4. The oxygen concentrator silencing system according to claim 2, characterized in that: An isolation net is provided between the second muffler cavity and the muffler cavity of the compressor intake muffler body.

5. The oxygen concentrator silencing system according to claim 2, characterized in that: The bottom surface of the compressor housing is provided with a downwardly recessed accommodation space on the side where the compressor intake muffler is located, and the bottom of the compressor muffler is placed in the accommodation space.

6. The oxygen concentrator silencing system according to claim 1, characterized in that: The first nitrogen exhaust muffler is entirely or partially disposed inside the compressor casing; The second nitrogen exhaust muffler is connected to the first nitrogen exhaust muffler and is arranged inside the compressor casing; The nitrogen-rich exhaust gas passes through the first nitrogen-discharging silencer and the second nitrogen-discharging silencer in sequence and then enters the compressor housing, and is discharged through the exhaust port at the bottom of the compressor housing.

7. The oxygen concentrator silencing system according to claim 6, characterized in that: The first nitrogen exhaust silencer, the second nitrogen exhaust silencer, and the compressor intake silencer are all arranged on the same side of the compressor housing; The nitrogen exhaust port of the second nitrogen exhaust muffler is arranged toward the housing of the first nitrogen exhaust muffler, and a guide slope is formed at positions where the nitrogen exhaust ports of the first nitrogen exhaust muffler and the second nitrogen exhaust muffler are opposite to each other.

8. The oxygen concentrator silencing system according to claim 7, characterized in that: A plurality of first wind shielding structures are arranged inside the first nitrogen exhaust silencer to divide the interior of the first nitrogen exhaust silencer into a plurality of silencer units connected in sequence; each silencer unit is filled with silencer material; the first air inlet of the first nitrogen exhaust silencer is arranged upward, and the first air outlet is arranged downward.

9. The oxygen concentrator silencing system according to claim 7, characterized in that: A plurality of second wind shielding structures are arranged inside the second nitrogen exhaust silencer to separate the interior of the second nitrogen exhaust silencer into a plurality of silencer units that are connected in sequence; each silencer unit is filled with silencer material; The second air inlet and the nitrogen exhaust port of the second nitrogen exhaust muffler are arranged on both sides of the upper side thereof; The second nitrogen exhaust muffler is provided with an avoidance groove on one side close to the compressor.

10. An oxygen concentrator, characterized in that: The oxygen concentrator comprises the oxygen concentrator silencing system according to any one of claims 1 to 9.

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