Air outlet silencer and oxygen production equipment

Abstract

The utility model provides an air outlet silencer and oxygen generating equipment, the air outlet silencer comprises an air inlet cavity and an air outlet cavity which are communicated, the air inlet cavity is provided with an air inlet, the air outlet cavity is provided with an air outlet, and the opening area of the air outlet is larger than that of the air inlet; the silencer further comprises at least one longitudinal partition plate and / or at least one transverse partition plate, the longitudinal partition plates are arranged in the air inlet cavity in the air outlet direction and divide the air inlet cavity into a plurality of longitudinal silencing chambers which are arranged in sequence and communicated in sequence, and the air inlet and the longitudinal silencing chambers form a bent channel used for prolonging an air flow path. The transverse partition plates are arranged in the air inlet cavity in the air outlet direction and divide the air inlet cavity into a plurality of transverse silencing chambers which are arranged side by side and used for dividing airflow. According to the air outlet silencer, the path of airflow is changed by arranging the partition plate, and the silencing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction of oxygen-making equipment, and particularly relates to an air outlet noise reduction device and an oxygen-making equipment. Background Art

[0002] The oxygen-making equipment uses a compressor to generate high-pressure air, transports the high-pressure air to an adsorption tower filled with molecular sieves, and then uses the principle of pressure swing adsorption of the molecular sieves to separate nitrogen and oxygen in the air, so as to obtain high-purity oxygen. A oxygen-making device that generates high-concentration oxygen. Most of the people using the oxygen-making equipment are those in poor physical condition and need a quiet oxygen-using environment.

[0003] However, the existing oxygen-making equipment will generate relatively large noise during operation, seriously affecting the user experience. A part of the noise of the oxygen-making equipment comes from the nitrogen gas flow discharged from the molecular sieve, and a solution to the nitrogen gas noise problem of the existing oxygen-making equipment is urgently needed. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an air outlet noise reduction device and an oxygen-making equipment to solve the above technical problems in the prior art.

[0005] According to the first aspect of the utility model, an air outlet noise reduction device is provided, including:

[0006] An air outlet noise reduction device, including:

[0007] An air inlet cavity and an air outlet cavity, which are communicated. The air inlet cavity is provided with an air inlet, the air outlet cavity is provided with an air outlet hole, and the opening area of the air outlet hole is larger than the opening area of the air inlet;

[0008] It further includes:

[0009] At least one longitudinal partition, which is arranged in the air inlet cavity along the air outlet direction and divides the air inlet cavity into a plurality of longitudinal noise reduction chambers arranged in sequence and communicated in sequence. The air inlet and the plurality of longitudinal noise reduction chambers form a bent channel for extending the air flow path;

[0010] And / or,

[0011] At least one transverse partition, which is arranged in the air inlet cavity along the air outlet direction and divides the air inlet cavity into a plurality of transverse noise reduction chambers arranged side by side and used for splitting the air flow.

[0012] In an embodiment of the utility model, at least one longitudinal partition is arranged in the air inlet cavity, and the volumes of the plurality of longitudinal noise reduction chambers separated by the longitudinal partition are not equal.

[0013] In an embodiment of the utility model, the volumes of the plurality of longitudinal noise reduction chambers in the air outlet direction are sequentially increased.

[0014] In one embodiment of the present utility model, at least one transverse partition is provided in the air inlet chamber, and the volumes of the multiple transverse sound absorption chambers formed by separating the transverse partition are consistent.

[0015] In one embodiment of the present utility model, the air inlet chamber and the air outlet chamber are arranged up and down and separated by an intermediate partition, and an air guide port is provided on the intermediate partition; the air inlet is arranged at one end position of the air inlet chamber; the air guide port is arranged at the other end position of the air inlet chamber.

[0016] In one embodiment of the present utility model, at least one longitudinal partition and at least one transverse partition are provided in the air inlet chamber, the longitudinal partition is located between the air inlet and the air guide port, and the transverse partition is located at the position of the air guide port.

[0017] In one embodiment of the present utility model, the upper end of the air inlet chamber and the lower end of the air outlet chamber are of a detachable open structure, and partition plates with an outwardly convex structure are provided at the upper and / or lower ends inside the air inlet chamber and at the upper end of the air outlet chamber.

[0018] In one embodiment of the present utility model, sound-absorbing materials are provided in the air inlet chamber and / or the air outlet chamber;

[0019] and / or,

[0020] The air inlet is located above the air inlet chamber; the air outlet holes are located below the air outlet chamber and are composed of a plurality of holes.

[0021] According to the second aspect of the present utility model, an oxygen generation device is further provided, including the above-mentioned air outlet sound absorption device, and the air outlet sound absorption device is arranged in the compressor chamber of the oxygen generation device.

[0022] In one embodiment of the present utility model, an air inlet sound absorption device for compressor air inlet sound absorption is further arranged in the compressor chamber, and sound-absorbing cotton is provided at the inner wall of the compressor chamber.

[0023] One beneficial effect of the present utility model is that:

[0024] For the air outlet sound absorption device provided by the present utility model, the air flow enters the air inlet chamber through the air inlet, then enters the air outlet chamber from the air inlet chamber, and then is discharged through the air outlet holes. The longitudinal partition and / or transverse partition arranged in the air inlet chamber can change the path of the air flow, affect the flow direction of the air flow, consume the energy of the air flow, and play a role in silencing the air flow. After the air flow enters the air outlet chamber with a larger space from the longitudinal sound absorption chamber or the transverse sound absorption chamber, the flow rate decreases, and the sound can be further reduced.

[0025] Other features and advantages of the present utility model will become clear from the following detailed description of the exemplary embodiments of the present utility model with reference to the accompanying drawings. Description of the Drawings

[0026] The drawings incorporated in and forming a part of this specification illustrate embodiments of the present utility model and, together with the description, are used to explain the principles of the present utility model.

[0027] Figure 1 is a schematic diagram of the overall structure of the air outlet silencing device provided by the present utility model;

[0028] Figure 2 is a schematic diagram of the bottom structure of the air outlet silencing device provided by the present utility model;

[0029] Figure 3 is a sectional view of the air outlet silencing device provided by the present utility model;

[0030] Figure 4 is a longitudinal sectional view of the housing of the air outlet silencing device provided by the present utility model;

[0031] Figure 5 is a transverse sectional view of the housing of the air outlet silencing device provided by the present utility model

[0032] Figure 6 is an exploded view of the air outlet silencing device provided by the present utility model;

[0033] Figure 7 is Figure 6 a schematic diagram of the structure of the intake cavity cover plate in

[0034] Figure 8 is Figure 6 a schematic diagram of the top structure of the main body of the housing in

[0035] Figure 9 is Figure 6 a schematic diagram of the bottom structure of the main body of the housing in

[0036] Figure 10 is a sectional view of the oxygen generation equipment provided by the present utility model.

[0037] In the figures, the reference numerals and their corresponding component names are as follows:

[0038] 1. Housing;

[0039] 11. Intermediate partition; 111. Air guide port; 112. First partition board;

[0040] 120. Longitudinal partition; 121. First longitudinal partition; 122. Second longitudinal partition; 123. Transverse partition; 1211. First opening; 1221. Second opening; 1231. Third opening;

[0041] 13. Intake chamber; 130. Intake port; 131. First longitudinal sound-absorbing chamber; 132. Second longitudinal sound-absorbing chamber; 133. First transverse sound-absorbing chamber; 134. Second transverse sound-absorbing chamber;

[0042] 14. Exhaust chamber; 140. Exhaust hole;

[0043] 15. Exhaust chamber cover plate;

[0044] 16. Main body;

[0045] 17. Intake chamber cover plate; 171. Second partition plate;

[0046] 2. Sound-absorbing material;

[0047] 21. First sound-absorbing block;

[0048] 22. Second sound-absorbing block;

[0049] 23. Third sound-absorbing block;

[0050] 24. Fourth sound-absorbing block;

[0051] 25. Fifth sound-absorbing block. Detailed implementation mode

[0052] Now, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0053] The following description of at least one exemplary embodiment is actually merely illustrative and in no way restricts the present invention or its application or use.

[0054] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the specification.

[0055] In this document, "top", "bottom", "left", "right", "upper", "lower", etc. are only used to represent the relative positional relationships between relevant parts, rather than defining the absolute positions of these relevant parts.

[0056] In this document, "first", "second", etc. are only used for distinction from each other, rather than indicating importance, order, and the premise of mutual existence, etc.

[0057] In this document, "equal", "same", etc. are not strict mathematical and / or geometric restrictions, but also include the allowable errors that can be understood by those skilled in the art and are allowed in manufacturing or using, etc.

[0058] In this text, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0059] In this text, examples of various specific processes and materials are provided, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0060] The present utility model provides an air outlet silencing device, as Figures 1 to 9 shown, including an air inlet chamber 13 and an air outlet chamber 14, which are communicated. The air inlet chamber 13 is provided with an air inlet 130, and the air outlet chamber 14 is provided with an air outlet hole 140, and the opening area of the air outlet hole 140 is larger than that of the air inlet 130, so as to avoid whistling.

[0061] The air outlet silencing device further includes at least one longitudinal partition 120 and / or at least one transverse partition 123. At least one longitudinal partition 120 is arranged in the air inlet chamber 13 along the air outlet direction, and divides the air inlet chamber 13 into a plurality of longitudinally arranged and sequentially communicated longitudinal silencing chambers. The air inlet 130 and the plurality of longitudinal silencing chambers form a bent passage for extending the air flow path; at least one transverse partition is arranged in the air inlet chamber 13 along the air outlet direction, and divides the air inlet chamber 13 into a plurality of laterally arranged and air-flow dividing transverse silencing chambers.

[0062] Only the longitudinal partition 120 or only the transverse partition 123 can be arranged in the air outlet chamber 14, and both the longitudinal partition 120 and the transverse partition 123 can also be arranged in the air outlet chamber 14 at the same time.

[0063] The air flow can enter the air inlet chamber 13 through the air inlet 130, pass through the plurality of longitudinal silencing chambers and / or the plurality of transverse silencing chambers, then enter the air outlet chamber 14, and finally be discharged from the air outlet hole 140. The longitudinal partition 120 and / or the transverse partition 123 in the air inlet chamber 13 can change the path of the air flow, affect the flow direction of the air flow, and consume the energy of the air flow, thereby playing a role in silencing the air flow; the space of the air outlet chamber 14 is relatively large. After the air flow enters the air outlet chamber 14 from the longitudinal silencing chamber or the transverse silencing chamber, the flow velocity decreases, and the sound can be further reduced.

[0064] The air outlet silencing device provided by the present utility model can be applied to gas treatment equipment, such as oxygen-making equipment, air purification equipment, etc., and can silence and reduce the noise of the air flow generated by the equipment.

[0065] In some embodiments, at least one longitudinal partition 120 is arranged in the air inlet chamber 13, and the volumes of the plurality of longitudinal silencing chambers formed by the longitudinal partition 120 are not equal to each other. The air flow passes through the plurality of longitudinally arranged silencing chambers with different volumes in sequence, which can avoid the occurrence of high-frequency harsh sounds caused by the same-frequency resonance.

[0066] In a specific embodiment, the volumes of a plurality of longitudinal sound-absorbing chambers in the air outlet direction are sequentially increased. The volumes of the plurality of longitudinal sound-absorbing chambers increase step by step, which can gradually reduce the flow velocity of the air flow, thereby improving the sound-absorbing effect and avoiding the phenomenon of homophonic resonance.

[0067] In some embodiments, at least one transverse partition 123 is provided in the air inlet chamber 13, and the volumes of a plurality of transverse sound-absorbing chambers formed by separating the transverse partition 123 are consistent. The air flow can be evenly divided into a plurality of transverse sound-absorbing chambers with the same volume, realizing the dispersed sound absorption of the air flow.

[0068] Furthermore, the air flow divided into a plurality of transverse sound-absorbing chambers can converge and then enter the air outlet chamber 14. When the air flows converge, the sound waves are superimposed and interfere with each other, canceling each other out, thereby weakening the sound.

[0069] In one embodiment, the air inlet chamber 13 and the air outlet chamber 14 are arranged up and down and separated by an intermediate partition 11, and a gas guide port 111 is provided on the intermediate partition 11. The gas guide port 111 connects the air inlet chamber 13 and the air outlet chamber 14, and the air flow in the air inlet chamber 13 enters the air outlet chamber 14 through the gas guide port 111. The air inlet 130 is arranged at one end position of the air inlet chamber 13, and the gas guide port 111 is arranged at the other end position of the air inlet chamber 13, thereby extending the air flow path and improving the sound-absorbing effect.

[0070] Specifically, the air outlet sound-absorbing device has a housing 1, and an inner cavity is formed inside the housing 1. The intermediate partition 11 is arranged in the inner cavity, separating the inner cavity into an air inlet chamber 13 and an air outlet chamber 14. The air inlet 130 and the air outlet hole 140 are arranged on the housing 1. The air inlet chamber 13 is arranged at the upper part of the housing 1, and the air outlet chamber 14 is arranged at the lower part of the housing 1. The air inlet 130 and the gas guide port 111 are arranged left and right. For example, the air inlet 130 is arranged at the left end of the air inlet chamber 13, and the gas guide port 111 is arranged at the right end of the air inlet chamber 13, and the air flow flows from the left end to the right end of the air inlet chamber 13.

[0071] In the height direction of the housing 1, the intermediate partition 11 is close to the middle position of the housing 1, and the intermediate partition 11 extends horizontally in the inner cavity of the housing 1. The air inlet chamber 13 is located above the intermediate partition 11, and the air outlet chamber 14 is located below the intermediate partition 11. The air inlet 130 can be arranged on the top or side wall of the housing 1, and the air outlet hole 140 can be arranged on the bottom or side wall of the housing 1.

[0072] The longitudinal partition 120 forms a bent air flow channel in the air inlet chamber 13. The air flow needs to flow around the longitudinal partition 120, thereby extending the air flow path, changing the air flow direction, and being able to reduce the noise of the air flow.

[0073] In one embodiment, at least one longitudinal partition 120 and at least one transverse partition 123 are provided in the air inlet chamber 13. The longitudinal partition 120 is located between the air inlet 130 and the air guide port 111, and the transverse partition 123 is located at the position of the air guide port 111.

[0074] Specifically, the air flow first passes through the bent channel formed by the longitudinal partition 120, then is shunted by the transverse partition 123, and then reaches the air guide port 111. It realizes buffering the impact pressure of the gas by extending the path of the air flow first, then performs sound absorption treatment by shunting, and then cooperates with the structure of the lower air outlet chamber 14 to achieve the final sound absorption treatment, so as to form a three-stage sound absorption treatment structure, which can fully reduce the noise of the air flow and discharge the silent air flow through the air outlet holes 140.

[0075] In a specific embodiment, as Figure 4 shown, two longitudinal partitions 120 and one transverse partition 123 are provided in the air inlet chamber 13. The two longitudinal partitions 120 are the first longitudinal partition 121 and the second longitudinal partition 122 respectively.

[0076] On one side of the first longitudinal partition 121, a first longitudinal sound absorption chamber 131 communicating with the air inlet 130 is formed. Between the other side of the first longitudinal partition 121 and the second longitudinal partition 122, a second longitudinal sound absorption chamber 132 is formed. At one end of the first longitudinal partition 121 close to the middle partition 11, a first opening 1211 for the air flow to pass through is formed. At one end of the second longitudinal partition 122 far from the middle partition 11, a second opening 1221 for the air flow to pass through is formed.

[0077] The air flow enters the first longitudinal sound absorption chamber 131 from the air inlet 130, then enters the second longitudinal sound absorption chamber 132 through the first opening 1211, and then flows to the other side of the second longitudinal partition 122 through the second opening 1221.

[0078] Referring to Figure 4 the perspective, the air inlet 130 is located at the top of the first longitudinal sound absorption chamber 131, the first opening 1211 is located at the bottom of the first longitudinal partition 121, and the second opening 1221 is located at the top of the second longitudinal partition 122. The air flow enters the first longitudinal sound absorption chamber 131 through the air inlet 130, then flows downward to the first opening 1211 at the bottom of the first longitudinal partition 121, enters the second longitudinal sound absorption chamber 132 through the first opening 1211, then flows upward to the second opening 1221 at the top of the second longitudinal partition, and flows to the air guide port 111 on the lower middle partition 11 through the second opening 1221, forming an S-shaped flow path in the air inlet chamber 13.

[0079] The volume of the first longitudinal anechoic chamber 131 is larger than that of the second longitudinal anechoic chamber 132. After the air flow enters the second longitudinal anechoic chamber 132 from the first longitudinal anechoic chamber 131, the flow velocity and the sound frequency change, thereby gradually reducing the sound of the air flow and avoiding the phenomenon of resonance with the same frequency.

[0080] The transverse partition 123 is arranged on the side of the second longitudinal partition 122 away from the first longitudinal partition 121. The second longitudinal partition 122 and the transverse partition 123 form a T-shaped structure. The first transverse anechoic chamber 133 and the second transverse anechoic chamber 134 are respectively formed on the opposite sides of the transverse partition 123. Both the first transverse anechoic chamber 133 and the second transverse anechoic chamber 134 communicate with the second opening 1221 and both communicate with the air guide port 111.

[0081] The air flow in the second longitudinal anechoic chamber 132 can enter the first transverse anechoic chamber 133 and the second transverse anechoic chamber 134 simultaneously through the second opening 1221. The air flow in both the first transverse anechoic chamber 133 and the second transverse anechoic chamber 134 can enter the air outlet cavity 14 through the air guide port 111. The first transverse anechoic chamber 133 and the second transverse anechoic chamber 134 separated by the transverse partition 123 have a smaller space, and can divide the air flow into two paths. The two paths of air flow can converge at the air guide port 111. When the air flows converge, the sound waves are superimposed and interfere with each other, canceling each other out, thereby weakening the sound.

[0082] Specifically, the first longitudinal partition 121, the second longitudinal partition 122 and the transverse partition 123 extend along the height direction in the intake cavity 13. Further, the first longitudinal partition 121 and the second longitudinal partition 122 are arranged oppositely, and the transverse partition 123 is perpendicular to the second longitudinal partition 122. The first longitudinal anechoic chamber 131 and the second longitudinal anechoic chamber 132 are arranged left and right, and the first transverse anechoic chamber 133 and the second transverse anechoic chamber 134 are arranged front and back. The transverse partition 123 corresponds to the middle position of the air guide port 111. The front side part of the air guide port 111 corresponds to the first transverse anechoic chamber 133, and the rear side part of the air guide port 111 corresponds to the second transverse anechoic chamber 134, so that the air flow can flow smoothly.

[0083] Further, as Figure 4 shown, a third opening 1231 is formed between the transverse partition 123 and the middle partition 11. The air flows in the first transverse anechoic chamber 133 and the second transverse anechoic chamber 134 converge and interfere with each other at the third opening 1231, and then enter the air guide port 111. The third opening 1231 is located above the air guide port 111.

[0084] The first opening 1211, the second opening 1221, and the third opening 1231 can be through holes or notches provided on the corresponding partitions, or can be gaps formed between the corresponding partition ends and the inner wall of the housing or the middle partition 11.

[0085] In some specific embodiments, the first opening 1211 includes a plurality of sound-absorbing small holes provided on the first longitudinal partition 121, the second opening 1221 includes a plurality of sound-absorbing small holes provided on the second longitudinal partition 122, and the third opening 1231 includes a plurality of sound-absorbing small holes provided on the transverse partition 123.

[0086] In one embodiment, as Figure 4 and Figure 6 shown, a detachable cover plate is provided at the upper end of the intake chamber 13 and the lower end of the exhaust chamber 14. A detachable intake chamber cover plate 17 is provided at the upper end of the intake chamber 13, and a detachable exhaust chamber cover plate 15 is provided at the lower end of the exhaust chamber 14.

[0087] Specifically, the housing 1 includes a hollow main body 16. The top and the top of the main body 16 respectively form openings. The intermediate partition 11 is disposed within the main body 16. The exhaust chamber cover plate 15 is detachably connected to the top end of the main body 16, and the intake chamber cover plate 17 is detachably connected to the bottom end of the main body 16. The exhaust chamber cover plate 15 can be connected to the main body 16 by snap connection, fastener connection or other conventional detachable connection methods; the intake chamber cover plate 17 can be connected to the main body 16 by snap connection, fastener connection or other conventional detachable connection methods.

[0088] Further, the main body 16 is configured as a flat cuboid. The air inlet 130 is provided on the intake chamber cover plate 17. The longitudinal partition 120 and the transverse partition 123 are fixedly connected to the intake chamber cover plate 17 or the intermediate partition 11. The longitudinal partition 120 and the transverse partition 123 and the main body 16 or the intake chamber cover plate 17 can be of an integral structure, without the need for separate disassembly and assembly, which can simplify the assembly steps of the exhaust sound-absorbing device and is convenient for installation and disassembly. The air inlet 130 can be configured as a pipe joint structure extending outward from the intake chamber cover plate 17 to facilitate connection of the gas path pipeline.

[0089] In one specific embodiment, as Figure 6 shown, the first longitudinal partition 121 and the transverse partition 123 are fixedly connected to the intake chamber cover plate 17, and the second longitudinal partition 122 is fixedly connected to the main body 16 and the intermediate partition 11.

[0090] Specifically, the top end of the first longitudinal partition 121 is fixedly connected to the intake chamber cover plate 17, and the gap between the bottom end and the intermediate partition 11 forms the first opening 1211. The top end of the transverse partition 123 is fixedly connected to the intake chamber cover plate 17, and the gap between the bottom end and the intermediate partition 11 forms the third opening 1231. The bottom end of the second longitudinal partition 122 is fixedly connected to the intermediate partition 11, and the opposite sides are fixedly connected to the inner wall of the main body 16. The gap between the top end and the intake chamber cover plate 17 forms the second opening 1221.

[0091] In one embodiment, the air inlet 130 is located above the air inlet chamber 13, and the air outlet holes 140 are located below the air outlet chamber 14 and are composed of a plurality of holes. When the air outlet silencing device is applied to an oxygen generation device, the air inlet 130 is connected to the nitrogen discharge pipeline of the molecular sieve of the oxygen generation device to reduce the noise of the discharged nitrogen. Setting the air inlet 130 above facilitates the connection with the nitrogen discharge pipeline of the molecular sieve, and setting the air outlet holes 140 below can cooperate with the silencing structure at the bottom of the whole machine.

[0092] As Figure 3 In a specific embodiment shown, the air inlet 130 is provided on the air inlet chamber cover plate 17 at the top of the housing 1, and the air outlet chamber cover plate 15 is provided on the air outlet chamber cover plate 15 at the bottom of the housing 1. The air outlet chamber cover plate 15 extends to the left and right side walls of the housing 1, and the holes of the plurality of air outlet holes 140 are arranged in an array on the air outlet chamber cover plate 15, which can further silence the airflow.

[0093] In one embodiment, a sound-absorbing material 2 is provided in the air inlet chamber 13 and / or the air outlet chamber 14. The sound-absorbing material 2 can absorb the sound of the airflow and improve the silencing effect. The sound-absorbing material 2 can be a porous sound-absorbing material, such as inorganic fiber, organic fiber, inorganic foam, foam plastic, etc., or other existing sound-absorbing materials can be selected.

[0094] In some embodiments, as Figure 3 and Figure 6 shown, the sound-absorbing material 2 includes a first sound-absorbing block 21 provided in the first longitudinal silencing chamber 131, a second sound-absorbing block 22 provided in the second longitudinal silencing chamber 132, a third sound-absorbing block 23 provided in the first transverse silencing chamber 133, a fourth sound-absorbing block 24 provided in the second transverse silencing chamber 134, and a fifth sound-absorbing block 25 provided in the air outlet chamber 14. The first sound-absorbing block 21, the second sound-absorbing block 22, the third sound-absorbing block 23, the fourth sound-absorbing block 24, and the fifth sound-absorbing block 25 are all porous materials that are permeable to air, and can fully absorb the sound of the airflow when the airflow passes through.

[0095] Furthermore, the first sound-absorbing block 21 is filled in the first longitudinal silencing chamber 131, and its shape is adapted to the first longitudinal silencing chamber 131; the second sound-absorbing block 22 is filled in the second longitudinal silencing chamber 132, and its shape is adapted to the second longitudinal silencing chamber 132; the third sound-absorbing block 23 is filled in the first transverse silencing chamber 133, and its shape is adapted to the first transverse silencing chamber 133; the fourth sound-absorbing block 24 is filled in the second transverse silencing chamber 134, and its shape is adapted to the second transverse silencing chamber 134; the fifth sound-absorbing block 25 is filled in the air outlet chamber 14, and its shape is adapted to the air outlet chamber 14.

[0096] During installation, first install the first sound-absorbing block 21, the second sound-absorbing block 22, the third sound-absorbing block 23, the fourth sound-absorbing block 24 and the fifth sound-absorbing block 25 into the main body 16, and then install the air outlet cavity cover plate 15 and the air inlet cavity cover plate 17.

[0097] In some embodiments, partition plates with an outwardly convex structure are provided at the upper and / or lower ends in the air inlet cavity 13 and at the upper end of the air outlet cavity 14. The partition plates can provide corresponding air flow channels to sufficiently increase the flow area of the gas passing through the sound-absorbing material, and use the sound-absorbing and noise-reducing material filled therein to improve the noise reduction effect.

[0098] In some specific embodiments, as Figure 7 shown, a second partition plate 171 extending along the length direction of the air inlet cavity cover plate 17 is provided on the inner side of the air inlet cavity cover plate 17. The sound-absorbing material 2 in the air inlet cavity 13 abuts against the bottom of the second partition plate 171. Further, a plurality of second partition plates 171 are provided and are spaced apart on the inner side of the air inlet cavity cover plate 17, and gaps are formed between adjacent second partition plates 171. The air inlet 130 is provided on the air inlet cavity cover plate 17, and after the air flow enters from the air inlet 130, it can flow along the gaps between adjacent second partition plates 171, so that the air flow can uniformly pass through the sound-absorbing material 2 filled in the air inlet cavity 13, reducing the resistance to the air flow.

[0099] In some embodiments, as Figure 8 and Figure 9 shown, first partition plates 112 extending along the length direction of the intermediate partition plate 11 are respectively provided on opposite sides of the intermediate partition plate 11. The sound-absorbing material 2 in the air inlet cavity 13 abuts against the first partition plate 112 on the top surface of the intermediate partition plate 11, and the sound-absorbing material 2 in the air outlet cavity 14 abuts against the first partition plate 112 on the bottom surface of the intermediate partition plate 11. Further, a plurality of first partition plates 112 are respectively provided at intervals on the top surface and the bottom surface of the intermediate partition plate 11, and gaps are formed between adjacent first partition plates 112. The air flow can flow in the gaps formed between adjacent first partition plates 112, so that the air flow can uniformly pass through the sound-absorbing material 2 filled in the air inlet cavity 13 and the air outlet cavity 14, reducing the resistance to the air flow.

[0100] The present utility model also provides an oxygen generation device, as Figure 10 shown, the oxygen generation device includes an air outlet noise reduction device provided by the present utility model as described above.

[0101] For the specific structure, principle, function, etc. of the air outlet noise reduction device of the oxygen generation device provided by the present utility model, reference can be made to the air outlet noise reduction device provided by the present utility model as described above, and thus will not be elaborated herein.

[0102] In some embodiments, the oxygen generation device includes a molecular sieve device for separating nitrogen and oxygen in the air. The nitrogen discharged from the molecular sieve device is transported to the air inlet 130 of the outlet silencing device. After the outlet silencing device performs noise reduction processing on the nitrogen, it is discharged through the air outlet 140, thereby reducing the noise of the oxygen generation device.

[0103] In some embodiments, the outlet silencing device is disposed in the compressor chamber of the oxygen generation device. The outlet silencing device discharges nitrogen into the compressor chamber through the air outlet 140.

[0104] A heat dissipation air duct is formed in the compression chamber, and the heat dissipation air in the heat dissipation air duct dissipates heat from the compressor. The oxygen generation device is provided with a silencing exhaust passage for discharging the heat dissipation air. The nitrogen discharged from the outlet silencing device can be discharged from the oxygen generation device together with the heat dissipation air through the silencing exhaust passage, realizing the integrated silencing treatment of the whole oxygen generation device.

[0105] Furthermore, an inlet silencing device for silencing the intake of the compressor is also disposed in the compressor chamber. The inlet silencing device is connected to the intake pipe of the compressor to perform noise reduction on the air entering the compressor. In addition, sound-absorbing cotton is provided at the inner wall of the compressor chamber. The sound-absorbing cotton can absorb the noise in the compressor chamber and reduce the noise transmitted out of the compressor chamber. Cooperating with the outlet silencing device and the inlet silencing device in the compressor chamber, comprehensive noise reduction of the compressor chamber is achieved, thereby providing a quiet oxygen-using environment for users.

[0106] The embodiments of the present invention have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other ordinary technical personnel in the technical field to understand the disclosed embodiments. The scope of the present invention is defined by the appended claims.

Claims

1. An air outlet silencing device, characterized in that, Comprising: An intake chamber and an outlet chamber, which are communicatively arranged. The intake chamber is provided with an air inlet, and the outlet chamber is provided with an air outlet hole, and the opening area of the air outlet hole is larger than the opening area of the air inlet. Further comprising: At least one longitudinal partition, which is arranged in the intake chamber along the air outlet direction and divides the intake chamber into a plurality of longitudinally arranged and sequentially communicated longitudinal sound-absorbing chambers. The air inlet and the plurality of longitudinal sound-absorbing chambers form a bent channel for extending the air flow path. And / or At least one transverse partition, which is arranged in the intake chamber along the air outlet direction and divides the intake chamber into a plurality of laterally arranged and air-flow-dividing transverse sound-absorbing chambers.

2. The air outlet silencing device according to claim 1, characterized in that, At least one longitudinal partition is provided in the intake chamber, and the volumes of the plurality of longitudinal sound-absorbing chambers formed by the longitudinal partition are not equal to each other.

3. The air outlet silencing device according to claim 2, characterized in that, The volumes of the plurality of longitudinal sound-absorbing chambers in the air outlet direction are sequentially increased.

4. The air outlet silencing device according to claim 1, characterized in that, At least one transverse partition is provided in the intake chamber, and the volumes of the plurality of transverse sound-absorbing chambers formed by the transverse partition are the same.

5. The air outlet silencing device according to claim 1, wherein The intake chamber and the outlet chamber are arranged up and down and separated by an intermediate partition, and the intermediate partition is provided with an air guiding port; the air inlet is arranged at one end position of the intake chamber; the air guiding port is arranged at the other end position of the intake chamber.

6. The air outlet silencing device according to claim 5, wherein, At least one longitudinal partition and at least one transverse partition are provided in the intake chamber. The longitudinal partition is located between the air inlet and the air guiding port, and the transverse partition is located at the position of the air guiding port.

7. The air outlet silencing device according to claim 1, characterized in that, Detachable covers are provided at the upper end of the intake chamber and the lower end of the outlet chamber. Partition plates in a convex shape are provided at the upper and / or lower ends in the intake chamber and at the upper end of the outlet chamber.

8. The air outlet sound-absorbing device according to any one of claims 1 to 7, wherein Sound-absorbing materials are provided in the intake chamber and / or the outlet chamber; And / or The air inlet is located above the intake chamber; the air outlet hole is located below the outlet chamber and is composed of a plurality of holes.

9. An oxygen generation device, characterized in that, Comprising the air outlet sound-absorbing device according to any one of claims 1 to 8 above, and the air outlet sound-absorbing device is arranged in the compressor chamber of the oxygen generation equipment.

10. The oxygen generation device according to claim 9, characterized in that, An air intake sound-absorbing device for compressor air intake is further arranged in the compressor chamber, and sound-absorbing cotton is provided at the inner wall of the compressor chamber.

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