Oxygen generating device

Abstract

The present invention provides an oxygen generating device, comprising a housing, and a device chamber and a compressor chamber which are arranged in the housing, and further comprising an air intake module, a heat dissipation air duct, and an exhaust silencing device. The compressor chamber is located below the device chamber and is in communication with the device chamber; the air intake module is arranged on a first side wall of the housing, is configured to allow the entry of cooling airflow, and is configured to supply air to a compressor; the heat dissipation air duct comprises first air inlets arranged on the air intake module, a first air duct connected to the first air inlets and located between a top wall of the housing and a top plate of the device chamber, and a second air duct connected to the first air duct and located between a second side wall of the housing and a second side plate of the device chamber, the second side plate being provided with second air inlets; and the exhaust silencing device is arranged at the bottom of the compressor chamber and internally forms an exhaust silencing chamber in communication with the compressor chamber, a silencing air outlet being arranged at the bottom of the exhaust silencing cavity. The oxygen generating device provided by the present invention has a compact structure, improved heat dissipation effect, and lower noise.

Description

Oxygen production equipment TECHNICAL FIELD

[0001] The present application relates to the technical field of oxygen production equipment. BACKGROUND

[0002] An oxygen generator is a device that can extract oxygen from air. It is mainly used in the medical field to provide high-purity oxygen for patients who need additional oxygen supply. The molecular sieve type oxygen generator is currently more commonly used, which has two molecular sieves that perform the same cycle process to achieve continuous gas supply. The working process is as follows: the raw air is pressurized by a compressor, and then the treated compressed air enters the molecular sieve through the inlet valve, and the nitrogen gas is adsorbed in the molecular sieve, and the gas flowing out is high-purity oxygen.

[0003] When a compressor is used to compress a large amount of filtered air, the potential energy of the molecules in the compressed air is converted into kinetic energy, and the molecules move frequently and collide with each other to generate heat. If the generated heat cannot be discharged in time, it will affect the service life of the oxygen production equipment. At present, a fan is generally provided for the compressor to dissipate heat, and the frame structure inside the shell is relatively complex, and the air duct design is also not reasonable, the heat dissipation effect is poor, and the sound insulation and noise reduction effect is poor, the noise generated during operation is very large and also has a high temperature rise, which seriously affects the use performance of the product.

[0004] The above information disclosed in the background is only used to increase the understanding of the background of the present application, and therefore, it can include prior art known by those skilled in the art. SUMMARY

[0005] The purpose of the present application is to provide an oxygen production equipment to solve the above technical problems in the prior art.

[0006] The oxygen production equipment provided by the present application comprises:

[0007] A shell comprising a first side wall and a second side wall;

[0008] A device cavity is provided in the shell, and a second side plate adjacent to the second side wall is provided;

[0009] A compressor cavity is provided in the shell, and a compressor is provided inside the compressor cavity, which is located below the device cavity and communicates with the device cavity;

[0010] An air inlet module is provided on the first side wall, which is used to introduce cooling air into the shell and to supply air to the compressor;

[0011] a heat dissipation air duct comprising a first air inlet arranged on the air inlet module and used for entering a heat dissipation air flow, a first air duct connected with the first air inlet and arranged between the top wall of the shell and the top plate of the equipment cavity, a second air duct connected with the first air duct and arranged between the second side wall and the second side plate, and a second air inlet arranged on the second side plate and used for the heat dissipation air flow in the second air duct to enter the equipment cavity;

[0012] an exhaust silencing device arranged at the bottom of the compressor cavity and internally forming an exhaust silencing cavity, the top of which is provided with a silencing air inlet communicating the compressor cavity and the exhaust silencing cavity, and the bottom of which is provided with a silencing air outlet used for exhausting the air flow in the exhaust silencing cavity out of the oxygen generating device.

[0013] In an embodiment of the present application, the air inlet module comprises:

[0014] an air inlet cavity recessed in the shell;

[0015] a mounting cavity recessed in the cavity wall opposite to the open end of the air inlet cavity;

[0016] a filter cavity detachably arranged in the mounting cavity;

[0017] an air inlet pipe head communicating with the compressor air inlet and extending into the mounting cavity;

[0018] the air inlet pipe head is arranged in connection with the filter cavity, a first filter is arranged in the air inlet cavity, and a second filter is arranged in the filter cavity;

[0019] the first air inlet is arranged at the bottom of the air inlet cavity;

[0020] the ambient air enters the air inlet cavity and passes through the first filter, then part of the air flows into the filter cavity, enters the oxygen supply pipeline after passing through the second filter, and the other part of the air enters the first air inlet and enters the heat dissipation air duct.

[0021] In an embodiment of the present application, the air inlet module further comprises an air inlet cover detachably arranged at the open end of the air inlet cavity, and a first air inlet is formed between the air inlet cover and the cavity wall of the air inlet cavity and used for introducing ambient air; the first air inlet is arranged in a hidden manner and spaced from the filter cavity and the first air inlet.

[0022] In an embodiment of the present application, a first circuit board is arranged in the first air duct, and the first circuit board is fixedly arranged on the top plate of the equipment cavity; the plane where the top plate of the equipment cavity is located is lower than the first air inlet.

[0023] The second circuit board is arranged in the equipment cavity, and the heat dissipation amount of the plurality of first components arranged on the first circuit board is less than the heat dissipation amount of the plurality of second components arranged on the second circuit board.

[0024] The panel frame is arranged between the top plate and the second side wall of the shell in an inclined manner, the control panel is arranged on the panel frame, and the panel frame is arranged in an inclined manner away from the second side wall in the upward direction; and the panel frame plays a role of guiding the airflow passing through.

[0025] In an embodiment of the present application, the interior of the shell is provided with a molecular sieve device, the molecular sieve device is located at one side of the equipment cavity and the compressor cavity; the equipment cavity is provided with a heat dissipation pipe connected with the compressor and used for conveying compressed gas to the molecular sieve device, and the heat dissipation pipe is arranged on the inner side of the second air inlet.

[0026] In an embodiment of the present application, the exhaust silencing device comprises:

[0027] a bottom cover, a top portion of which forms a silencing air inlet;

[0028] a bottom shell, which forms a sunken bottom shell groove, one end of the bottom shell groove forms the silencing air outlet;

[0029] an exhaust cover, which is arranged in the bottom shell groove, one end of the exhaust cover extends to the silencing air outlet, and the other end of the exhaust cover forms a hollow hole;

[0030] wherein, the bottom cover is connected to the bottom shell and covers the bottom shell groove, a first exhaust silencing cavity communicating with the silencing air inlet is formed between the outer side of the exhaust cover and the bottom cover, and a second exhaust silencing cavity communicating with the silencing air outlet is formed between the inner side of the exhaust cover and the bottom shell.

[0031] In an embodiment of the present application, the silencing air inlet comprises a first silencing air inlet and a second silencing air inlet close to opposite ends of the bottom cover respectively, the first silencing air inlet is close to the silencing air outlet of the bottom shell, and the second silencing air inlet is close to the hollow hole of the exhaust cover; the opening area of the first silencing air inlet is greater than the opening area of the second silencing air inlet; and / or,

[0032] the hollow holes are distributed on the top surface and the side surface of the exhaust cover, a slot inner gap is formed between the side surface of the exhaust cover and the side wall of the bottom shell groove, and the slot inner gap communicates with the first exhaust silencing cavity; and / or,

[0033] the interior of the first exhaust silencing cavity and / or the interior of the second exhaust silencing cavity and / or the top surface of the bottom cover are provided with exhaust sound-absorbing cotton.

[0034] In one embodiment of the present application, the inside of the shell is further provided with a waterless humidification module, which comprises:

[0035] a shell, which is internally provided with an air inlet chamber and an air outlet chamber;

[0036] an air inlet pipe and an air outlet pipe, which are respectively arranged on the air inlet chamber and the air outlet chamber and are located at the same end of the shell;

[0037] a humidification pipeline, at least a part of which passes through the air inlet chamber, and all or part of the pipeline wall of the humidification pipeline located in the air inlet chamber is a water-permeable structure;

[0038] a partition plate, which is arranged in the shell to separate the air inlet chamber and the air outlet chamber, and a through hole for connecting the air inlet chamber and the air outlet chamber is formed in the partition plate.

[0039] In one embodiment of the present application, the waterless humidification module is located below the air inlet module and outside the device cavity and forms an independent separated area; the air inlet pipe and the air outlet pipe are in communication with the air inlet pipeline of the oxygen generating device, the humidification pipeline is in communication with the oxygen delivery pipeline of the oxygen generating device; and / or,

[0040] the air inlet pipe and the air outlet pipe are coaxially arranged at the side of the shell, and an air inlet and an air outlet are respectively arranged at the communication part of the air inlet pipe and the air inlet chamber and the communication part of the air outlet pipe and the air outlet chamber; the through hole and the air inlet pipe are located at the two ends of the shell; and / or,

[0041] the air outlet chamber is filled with sound-absorbing cotton and / or filter cotton, and the water-permeable structure is a fiber membrane.

[0042] In one embodiment of the present application, the compressor cavity is provided with a sound-absorbing assembly, which comprises:

[0043] an air inlet sound-absorbing device, which is arranged at one side of the compressor connected with a second air inlet pipe, is provided with a recessed groove for avoiding the second air inlet pipe, forms an air inlet sound-absorbing cavity inside, and is provided with an air inlet and an air outlet in communication with the air inlet sound-absorbing cavity, wherein the air outlet is arranged in the recessed groove and is connected with the second air inlet pipe;

[0044] a nitrogen sound-absorbing device, which is arranged at the other side of the compressor, forms a nitrogen sound-absorbing cavity inside, and is provided with a nitrogen inlet and a nitrogen outlet in communication with the nitrogen sound-absorbing cavity.

[0045] Compared with the prior art, the application has the advantages and positive effects that: by arranging the equipment cavity, the heat generated by the internal components of the equipment cavity is prevented from rapidly spreading to other areas in the shell, affecting the normal work of other components; and the space in the shell is favorably separated into multiple interval spaces, favoring the increase of the length of the air duct and the number of components through which the heat dissipation airflow flows; and the communication between the interval spaces and the communication with the outside are arranged, forming a winding and smooth air path, increasing the heat dissipation efficiency of the internal components of the air duct; by arranging the first air duct, after the airflow enters from the first air inlet, the airflow flows between the top wall of the shell and the top plate of the equipment cavity, which can dissipate heat for the components above the top plate of the equipment cavity, favoring the improvement of the heat dissipation effect; the air inlet module is favorable for the compact structure arrangement of the oxygen generating equipment, and the exhaust silencing device can silence and reduce the noise of the heat dissipation airflow discharged by the oxygen generating equipment.

[0046] Other features of the present application, and their advantages, will become apparent in the course of the following detailed description of exemplary and non-limiting embodiments of the application, described in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0047] The accompanying drawings incorporated in and forming a part of the specification illustrate embodiments of the present application and, together with the description, serve to explain the principles of the application.

[0048] Fig. 1 is a structural schematic view of an air inlet module of an oxygen generating equipment according to the present application;

[0049] Fig. 2 is a structural schematic view of the air inlet cover in a disassembled state in Fig. 1;

[0050] Fig. 3 is an enlarged structural schematic view of the air inlet cavity in Fig. 2;

[0051] Fig. 4 is a structural schematic view of the filter cavity in Fig. 3 after being disassembled;

[0052] Fig. 5 is a structural schematic view of the air inlet cover in Fig. 2;

[0053] Fig. 6 is an enlarged schematic view of area A in Fig. 5;

[0054] Fig. 7 is a structural schematic view of the air inlet cover in Fig. 5 from another angle;

[0055] Fig. 8 is a sectional structural schematic view of Fig. 1;

[0056] Fig. 9 is an enlarged schematic view of area B in Fig. 8;

[0057] Fig. 10 is a structural schematic view of the filter cavity;

[0058] Fig. 11 is a structural schematic view of Fig. 10 from another angle;

[0059] Fig. 12 is an exploded structural schematic view of Fig. 10;

[0060] Fig. 13 is a structural schematic diagram of the filter cavity and the air inlet pipe head in the mounted state;

[0061] Fig. 14 is a sectional structural schematic diagram of Fig. 13;

[0062] Fig. 15 is a structural schematic diagram of Fig. 1 with the rear shell removed;

[0063] Fig. 16 is an enlarged structural schematic diagram of area C in Fig. 15;

[0064] Fig. 17 is a structural schematic diagram of the rear shell;

[0065] Fig. 18 is an enlarged structural schematic diagram of the mounting groove in Fig. 17;

[0066] Fig. 19 is another sectional structural schematic diagram of Fig. 1;

[0067] Fig. 20 is an enlarged schematic diagram of the air inlet cavity in Fig. 19;

[0068] Fig. 21 is an enlarged schematic diagram of area D in Fig. 20;

[0069] Fig. 22 is a structural schematic diagram of the heat dissipation air duct of the oxygen generating device provided by the present application;

[0070] Fig. 23 is a sectional structural schematic diagram of Fig. 22;

[0071] Fig. 24 is a structural schematic diagram of Fig. 22 with the front shell of the shell and part of the cavity plate of the device cavity exploded;

[0072] Fig. 25 is a structural schematic diagram of Fig. 24 with part of the cavity plate of the compressor cavity removed;

[0073] Fig. 26 is a structural schematic diagram of Fig. 22 with the shell removed;

[0074] Fig. 27 is a sectional structural schematic diagram of Fig. 26;

[0075] Fig. 28 is another sectional structural schematic diagram of Fig. 26;

[0076] Fig. 29 is an enlarged schematic diagram of area E in Fig. 28;

[0077] Fig. 30 is a structural schematic diagram of the first circuit board and the support column in Fig. 27;

[0078] Fig. 31 is a structural schematic diagram of the support column in Fig. 30;

[0079] Fig. 32 is a structural schematic diagram of the exhaust sound elimination device of the oxygen generating device provided by the present application;

[0080] Fig. 33 is a bottom structural schematic diagram of the exhaust sound elimination device in Fig. 32;

[0081] Fig. 34 is a plan view of the exhaust silencer of Fig. 32;

[0082] Fig. 35 is a sectional view of Fig. 34 taken along line M-M;

[0083] Fig. 36 is a sectional view of Fig. 34 taken along line N-N;

[0084] Fig. 37 is an exploded view of one embodiment of the bottom case and the exhaust cover of the exhaust silencer;

[0085] Fig. 38 is an exploded view of the bottom cover and the bottom case of the exhaust silencer;

[0086] Fig. 39 is a structural view of the exhaust cover of Fig. 38;

[0087] Fig. 40 is a structural view of another embodiment of the bottom case and the exhaust cover of the exhaust silencer;

[0088] Fig. 41 is a structural view of the exhaust cover of Fig. 40;

[0089] Fig. 42 is an exploded view of the exhaust silencer of Fig. 32;

[0090] Fig. 43 is a structural view of the bottom cover and the exhaust absorbing cotton of the exhaust silencer;

[0091] Fig. 44 is an exploded view of Fig. 43;

[0092] Fig. 45 is a structural view of one embodiment of the bottom cover of the exhaust silencer;

[0093] Fig. 46 is a structural view of another embodiment of the bottom cover of the exhaust silencer;

[0094] Fig. 47 is an exploded view of the first exhaust absorbing cotton, the perforated plate and the bottom cover of one embodiment of the exhaust silencer;

[0095] Fig. 48 is a sectional view of the first exhaust absorbing cotton, the perforated plate and the bottom cover of one embodiment of the exhaust silencer;

[0096] Fig. 49 is a structural view of the bottom of the oxygen generating apparatus according to the present application;

[0097] Fig. 50 is a structural view of the compressor cover and the exhaust silencer of the oxygen generating apparatus according to the present application;

[0098] Fig. 51 is an exploded view of Fig. 50;

[0099] Fig. 52 is a longitudinal sectional view of the compressor housing of the oxygen generating apparatus according to the present application;

[0100] Fig. 53 is a perspective view of the compressor housing of the oxygen generating apparatus according to the present application;

[0101] Fig. 54 is an exploded view of the compressor house of the oxygen generating apparatus according to the present application;

[0102] Fig. 55 is a structural schematic view of the air intake muffler of Fig. 54;

[0103] Fig. 56 is a structural schematic view of the nitrogen gas muffler of Fig. 54;

[0104] Fig. 57 is a transverse sectional view of the compressor house of the oxygen generating apparatus according to the present application;

[0105] Fig. 58 is a structural schematic view of one embodiment of the waterless humidification module of the oxygen generating apparatus according to the present application;

[0106] Fig. 59 is a sectional structural schematic view of Fig. 58;

[0107] Fig. 60 is a structural schematic view of Fig. 59 with the humidification pipeline removed;

[0108] Fig. 61 is a vertical sectional schematic view of the housing of the waterless humidification module of the oxygen generating apparatus according to the present application;

[0109] Fig. 62 is a schematic view of Fig. 58 from another angle;

[0110] Fig. 63 is a structural schematic view of another embodiment of the waterless humidification module of the oxygen generating apparatus according to the present application;

[0111] Fig. 64 is a sectional structural schematic view of the housing of Fig. 63;

[0112] Fig. 65 is a sectional view of the waterless humidification module of the oxygen generating apparatus according to the present application.

[0113] In the drawings, the reference numerals and their corresponding component names are as follows:

[0114] 100, oxygen generating apparatus;

[0115] 10, housing; 11, first side wall; 12, second side wall; 13, top wall;

[0116] 14, air outlet cavity; 141, air outlet;

[0117] 15, air intake cavity; 152, cavity bottom; 153, clamping groove; 155, first air inlet; 1551, air inlet side; 1552, air outlet side; 1553, arc-shaped air inlet face; 156, first filter;

[0118] 16, air intake cover; 161, first air inlet; 162, cover body; 1621, notch; 163, cover edge; 1631, clamping claw; 164, limiting rib;

[0119] 17, filter cavity; 170, cavity; 171, first cavity wall; 172, second cavity wall; 173, second air inlet; 174, guide fin; 175, avoidance slot; 1751, first slot wall; 17511, air outlet hole; 17512, air outlet nozzle; 176, support limiting part; 1761, support column; 177, second filter element; 1771, turning part; 178, filter frame; 1781, outer stop edge;

[0120] 18, mounting cavity; 181, first slot wall; 182, second slot wall; 1811, first avoidance opening; 1812, mounting slot opening; 1813, limiting slot;

[0121] 19, panel frame;

[0122] 20, equipment cavity;

[0123] 21, first side plate; 211, fixing frame; 2111, support part; 2112, fixing part;

[0124] 22, second side plate; 221, second air inlet;

[0125] 23, top plate; 231, reserved opening; 232, support edge;

[0126] 25, fan; 27, second circuit board; 28, support column; 281, column body; 282, snap-fit limiting top cap; 2821, connecting part; 2822, clamping jaw; 28221, jaw part; 28222, abutting part; 283, elastic plate; 284, snap-fit limiting bottom cap; 29, first circuit board; 291, first fixing hole;

[0127] 30, compressor cavity;

[0128] 33, cavity top; 331, third air inlet; 341, fourth air inlet;

[0129] 35, compressor; 351, heat dissipation pipe;

[0130] 36, air inlet pipe head; 361, pipe head part; 362, joint part; 363, mounting plate; 364, limiting column; 365, first connecting part; 366, second connecting part;

[0131] 37, first air inlet pipe;

[0132] 38, compressor cover; 381, cover top plate; 382, cover side plate; 384, cover sound absorption layer;

[0133] 39, second air inlet pipe;

[0134] 40, heat dissipation air duct; 41, first air duct; 42, second air duct; 43, third air duct;

[0135] 50, sound attenuation unit;

[0136] 51, bottom cover; 510, sound attenuation air inlet; 511, first sound attenuation air inlet; 512, second sound attenuation air inlet; 513, top plate of bottom cover; 514, side plate of bottom cover;

[0137] 52, bottom shell; 521, groove of bottom shell; 522, sound attenuation air outlet; 523, first positioning groove; 524, second positioning groove;

[0138] 53, exhaust cover; 531, hollow hole; 532, upper cover plate; 533, side cover plate; 534, flange;

[0139] 54, first exhaust sound attenuation cavity;

[0140] 55, second exhaust sound attenuation cavity;

[0141] 56, gap in groove;

[0142] 57, exhaust sound absorption cotton; 571, first exhaust sound absorption cotton; 572, second exhaust sound absorption cotton; 573, third exhaust sound absorption cotton; 574, fourth exhaust sound absorption cotton; 575, fifth exhaust sound absorption cotton;

[0143] 58, sound attenuation hole plate;

[0144] 60, waterless humidification module;

[0145] 61, shell; 611, air inlet chamber; 612, air outlet chamber; 613, partition plate; 6131, convex of partition plate; 614, through hole; 615, porous plate; 616, air inlet cavity; 6161, air inlet nozzle; 617, air outlet cavity; 6171, air outlet nozzle; 618, bottom wall of shell; 6181, convex groove; 619, shell wall; 6191, air inlet of shell; 6192, air outlet of shell;

[0146] 62, air inlet pipe;

[0147] 63, air outlet pipe;

[0148] 64, humidification pipeline;

[0149] 70, nitrogen sound attenuation device; 71, nitrogen air inlet; 72, nitrogen air outlet; 73, hollow plate; 74, nitrogen sound attenuation sound absorption cotton; 75, nitrogen sound attenuation partition plate;

[0150] 80, air inlet sound attenuation device; 81, air inlet; 82, air outlet; 83, accommodation groove; 84, air inlet sound attenuation sound absorption cotton; 85, air inlet sound attenuation partition plate. DETAILED DESCRIPTION

[0151] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings to make a clear and complete description of the technical solutions in the embodiments of the present application.

[0152] In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the positional or locational relationship based on the positional relationship shown in the drawings. The terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0153] In the present application, "equal", "same" and the like are not strictly limited in the mathematical and / or geometric sense, but also include the errors allowed by the person skilled in the art in manufacturing or use, etc.

[0154] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0155] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "under" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0156] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplification, the elements and arrangements of the particular examples are described in the following disclosure. Of course, they are only examples and are not intended to limit the present application. In addition, the present application can repeatedly refer to reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0157] The present application provides an oxygen generating device, as shown in FIGS. 1-65, the oxygen generating device 100 has a shell 10, a device cavity 20 and a compressor cavity 30 arranged in the shell 10, the device cavity 20 is located on the upper side of the compressor cavity 30. The compressor cavity 30 is provided with a compressor 35. By arranging the device cavity 20 and the compressor cavity 30, the heat generated by the internal components of the compressor cavity 30 and the device cavity 20 is prevented from rapidly spreading to other areas inside the oxygen generating device shell, affecting the normal work of other components.

[0158] The oxygen generating device 100 is provided with an air inlet module, which is used to introduce external air into the oxygen generating device 100, and after filtration, can be used to supply to the compressor 35, or can be used for heat dissipation.

[0159] The shell 10 includes a first side wall 11, a second side wall 12, and the first side wall 11 and the second side wall 12 are oppositely arranged; the device cavity 20 is provided with a second side plate 22 adjacent to the second side wall 12. The compressor cavity 30 is located below the device cavity 20 and communicates with the device cavity 20. The air inlet module is arranged on the first side wall 11, and the air inlet module is used to enter the heat dissipation airflow into the shell 10 and to supply air to the compressor 35.

[0160] The shell 10 is provided with a heat dissipation air duct 40, which includes a first air inlet 155 arranged on the air inlet module and used to enter the heat dissipation airflow, a first air duct 41 connected with the first air inlet 155 and located between the top wall of the shell 10 and the top plate of the device cavity 20, a second air duct 42 connected with the first air duct 41 and located between the second side wall 12 and the second side plate 22, and a second air inlet 221 opened on the second side plate 22 and used for the heat dissipation airflow in the second air duct 42 to enter the device cavity 20.

[0161] The bottom of the compressor cavity 30 is provided with an exhaust silencer, and the exhaust silencer forms an exhaust silencing cavity inside, the top of which is provided with a silencing air inlet 510 communicating the compressor cavity 30 and the exhaust silencing cavity, and the bottom is provided with a silencing air outlet 522 for discharging the airflow in the exhaust silencing cavity out of the oxygen generating device 100.

[0162] Referring to FIG. 8 and FIG. 9, the air inlet module of the oxygen generating device 100 comprises an air inlet cavity 15, a mounting cavity 18, a filter cavity 17, an air inlet pipe head 36, a first filter 156 and a second filter 177. The air inlet cavity 15 is recessed in the first side wall 11 of the shell 10 of the oxygen generating device 100, and the outer end of the air inlet cavity 15 is an open end. The mounting cavity 18 is recessed in the cavity wall opposite to the open end of the air inlet cavity 15, that is, the mounting cavity 18 extends away from the air inlet cavity 15 along the cavity bottom of the air inlet cavity 15. The filter cavity 17 is detachably located in the mounting cavity 18, and the mounting cavity 18 is used for accommodating the filter cavity 17. The air inlet pipe head 36 is in communication with the air inlet of the compressor 35 and extends into the mounting cavity 18. The air inlet pipe head 36 is connected with the filter cavity 17. The first filter 156 is arranged in the air inlet cavity 15, and the second filter 177 is arranged in the filter cavity 17. The air inlet module is arranged in the oxygen generating device 100, which is conducive to compact structure, reduces space occupation and improves market competitiveness. The filter cavity 17 is detachable, which can realize overall replacement of the filter cavity 17 and is conducive to improving the replacement efficiency. The first filter 156 and the second filter 177 are arranged, which is conducive to improving the filtering precision. The air inlet cavity 15 and the filter cavity 17 are arranged, so that the first filter 156 and the second filter 177 are respectively located in two cavities. On the one hand, one filter can be replaced according to needs, and on the other hand, the gas can be branched according to needs. The filtering precision of the second filter 177 is greater than that of the first filter 156. The gas flowing out of the air inlet cavity 15 enters the second filter 177 for secondary filtration.

[0163] In some embodiments of the present application, referring to FIG. 3, the first air inlet 155 for the heat dissipation airflow to pass through is arranged at the bottom of the air inlet cavity 15; the external air enters the air inlet cavity 15 and passes through the first filter 156; then part of the air flows into the filter cavity 17, and after being filtered by the second filter 177, enters the oxygen supply pipeline; the other part of the air flows into the first air inlet 155 and enters the heat dissipation air duct 40. The oxygen supply pipeline supplies air to the compressor 35. That is, the air inlet cavity 15 is shared by the oxygen supply pipeline and the heat dissipation air duct 40, which is conducive to simplifying the structure and reducing the number of components; and it is also conducive to reducing the air inlet on the appearance of the oxygen generating device 100 and improving the appearance quality. In some embodiments of the present application, referring to FIG. 9, the air inlet pipe head 36 has a pipe head part 361 and a joint part 362 extending along the upper end of the pipe head part 361 and bending towards the open end of the mounting cavity 18; when the filter cavity 17 is mounted into the mounting cavity 18, the filter cavity 17 and the joint part 362 can be simultaneously mounted. The filter cavity 17 enters the mounting cavity 18 from the open end of the mounting cavity 18 and moves inwardly to the position, thereby achieving mounting and fixing. That is, the axial direction of the joint part 362 is the mounting and dismounting direction of the filter cavity 17; when the filter cavity 17 is mounted or dismounted, the air inlet pipe head 36 and the filter cavity 17 can be simultaneously mounted or dismounted. The filter cavity 17 is detachably arranged, so that when the second filter needs to be replaced, the filter cavity 17 can be directly replaced, which is conducive to improving the efficiency of the replacement operation. The axial direction of the joint part 362 is arranged as the mounting and dismounting direction of the filter cavity 17, which ensures that when the filter cavity 17 is mounted into the mounting cavity 18, it moves inwardly along the axial direction of the joint part 362, and after the filter cavity 17 is mounted in place, the air inlet pipe head 36 and the filter cavity 17 can be simultaneously mounted in place; the mounting operation of the air inlet pipe head 36 and the filter cavity 17 is saved, which is conducive to improving the mounting efficiency.

[0164] In some embodiments of the present application, referring to FIGS. 2 to 4, the air inlet module further comprises an air inlet cover 16 arranged at the open end of the air inlet cavity 15, and a first air inlet 161 is formed between the air inlet cover 16 and the cavity wall of the air inlet cavity 15 for guiding the external air to enter. By arranging the air inlet cavity 15 and the air inlet cover 16, a hidden air inlet structure is formed, which is conducive to improving the appearance quality of the oxygen generating device; and the air inlet module is arranged in the oxygen generating device 100, which is conducive to compact structure, reducing space occupation and improving market competitiveness. The first filter 156 is arranged in the air inlet cavity 15 for filtering the external air flowing in, reducing the impurities such as dust carried in the air from entering the shell, and ensuring the cleanliness of the airflow entering the shell 10. The external air enters the air inlet cavity 15 through the first air inlet 161, and the first air inlet 161 is arranged near the groove wall, so that after the airflow enters the air inlet cavity 15, it turns to flow towards the first air inlet 155 and the filter cavity 17, which is conducive to increasing the length of the air path in the air inlet cavity 15 and increasing the bending of the air path, thereby reducing the noise.

[0165] In some embodiments of the present application, the first air inlet 161 is spaced apart from both the filter cavity 17 and the first air inlet 155 in the projection of the bottom of the air inlet cavity 15, forming a hidden air inlet structure. From the appearance, only the first air inlet 161 can be seen, and normally, the filter cavity 17 and the first air inlet 155 cannot be seen from the first air inlet 161, ensuring the appearance quality and forming a hidden air inlet structure.

[0166] In some embodiments of the present application, referring to FIGS. 5-7, the air inlet cover 16 has a cover body 162 matched with the open end of the air inlet cavity 15, and a slot 1621 is formed on the edge of the cover body 162, and the slot 1621 and the cavity wall of the air inlet cavity 15 form the first air inlet 161. By setting the slot 1621 to form the first air inlet 161, the cover body 162 can be matched with the open end of the air inlet cavity 15, and the slot 1621 can be easily manufactured and formed, simplifying the process.

[0167] In some embodiments of the present application, the air inlet cover 16 has a cover body 162, a cover edge 163 inwardly extending along the edge of the cover body 162, and a limiting rib 164 inwardly extending along the cover body 162. The cover edge 163 and the limiting rib 164 are arranged outside the first filter element 156, that is, the cover edge 163 and the limiting rib 164 are arranged around the first filter element 156, thereby limiting the first filter element 156. The outside of the first filter element 156 refers to the direction close to the center of the first filter element 156.

[0168] In some embodiments of the present application, the air inlet cover 16 is detachably arranged in the air inlet cavity 15, and a clamping structure is arranged between the air inlet cover 16 and the air inlet cavity 15, so that the air inlet cover 16 is clamped and fixed in the air inlet cavity 15, and the air inlet cover 16 is convenient to disassemble and assemble. A clamping groove 153 is arranged on the side wall of the air inlet cavity 15, and a clamping claw 1631 matched with the clamping groove 153 is arranged on the cover edge 163. When the air inlet cover 16 is inwardly installed into the air inlet cavity 15, the clamping claw 1631 is clamped and fixed with the clamping groove 153.

[0169] In some embodiments of the present application, the inwardly extending dimension of the cover edge 163 is matched with the depth of the air inlet cavity 15, and the inner end of the cover edge 163 abuts against the bottom 152 of the air inlet cavity 15, thereby limiting the installation of the cover edge 163 in place without a special limiting structure, simplifying the structure, and increasing the contact area between the cover edge 163 and the air inlet cavity 15, and the stability after installation.

[0170] In some embodiments of the present application, referring to FIG. 9 and FIG. 10, the filtering cavity 17 is provided with an outwardly extending flow guide rib 174, which is used to block the air flow from the gap between the first filter 156 and the filtering cavity 17 into the filtering cavity 17. By providing the flow guide rib 174, the air flow entering from the first air inlet 161 is guided into the first filter 156 for filtering, ensuring the quality of the air flowing into the filtering cavity 17. Preferably, the flow guide rib 174 abuts against the first filter 156, and the flow guide rib 174 extends in a direction close to the first filter 156. The flow guide rib 174 plays a role of guiding the air flow and limiting the first filter 156 from moving inward.

[0171] In some embodiments of the present application, the flow guide rib 174 extends in an arc shape in a direction away from the first air inlet 161 in a direction close to the first filter 156, and the flow guide rib 174 is an outwardly convex arc-shaped plate rib structure. The arc-shaped arrangement of the flow guide rib 174 is conducive to smooth air flow and reduces wind resistance. The external air entering from the first air inlet 161 reaches the air inlet cavity 15, part of the air directly enters the first filter 156, and part of the air impacts on the flow guide rib 174; then flows along the flow guide rib 174 and enters the first filter 156.

[0172] In some embodiments of the present application, the air inlet cover 16 has a cover body 162 and a limiting rib 164 extending inwardly from the cover body 162, which is used to limit the movement of the first filter 156 in the direction of the first air inlet 161, and the limiting rib 164 is located between the first air inlet 161 and the flow guide rib 174. The arrangement of the limiting rib 164 makes the external air entering from the first air inlet 161 be blocked by the limiting rib 164, so that more air flow in the air inlet cavity 15 impacts on the flow guide rib 174, forming a bending of the air flow in the air inlet cavity 15, which is conducive to prolonging the air path and increasing the path length of the air flow in the first filter 156, and is conducive to improving the filtering effect.

[0173] In the embodiment, referring to FIG. 1 and FIG. 13, the cavity wall of the filtering cavity 17 is concave to form an avoiding groove 175, the avoiding groove 175 is used for avoiding the air inlet pipe head 36, the air inlet pipe head 36 extends into the avoiding groove 175, which is beneficial to compact structure and reduces the occupied space. The air outlet hole 17511 matched with the air inlet pipe head 36 is arranged on the groove wall of the avoiding groove 175, and one end of the air inlet pipe head 36 is connected and installed at the air outlet hole 17511. By arranging the avoiding groove 175, the air inlet pipe head 36 extends into the avoiding groove 175, which is beneficial to compact structure of the filtering cavity 17 and the air inlet pipe head 36 and reduces the occupied space. The filtering cavity 17 is arranged in the oxygen generating device 100, which realizes integrated arrangement and avoids increasing the occupied space of the oxygen generating device 100. The filtering cavity 17 is detachably arranged, when the second filtering element needs to be replaced, the filtering cavity 17 can be directly replaced, which is beneficial to improving the efficiency of replacement operation and ensuring that the second filtering element 177 is installed in place.

[0174] In some embodiments of the application, the air outlet hole 17511 is arranged opposite to the air inlet end of the filtering cavity 17, the air inlet end of the filtering cavity 17 is surrounded to form the second air inlet 173, that is, the air outlet hole 17511 and the second air inlet 173 are arranged opposite to each other, the airflow direction entering from the second air inlet 173 is consistent with the axial direction of the air outlet hole 17511, which is beneficial to quickly and efficiently reaching the air outlet hole 17511 in the filtering cavity 17. In order to facilitate installation of the air inlet pipe head 36 and the air outlet hole 17511, the air outlet nozzle 17512 extending into the avoiding groove 175 is arranged along the air outlet hole 17511, or the air outlet nozzle 17512 extending away from the air inlet end of the filtering cavity 17 is arranged along the air outlet hole 17511, and the air inlet pipe head 36 is sealingly connected with the air outlet nozzle 17512. By arranging the air outlet nozzle 17512, the contact area of the air inlet pipe head 36 and the filtering cavity 17 is increased, the axial contact size of the air outlet hole 17511 is increased, which is beneficial to increasing the sealing property and stability of the connection of the air inlet pipe head 36 and the air outlet nozzle 17512.

[0175] In some embodiments of the application, the air inlet pipe head 36 has a pipe head part 361 and a joint part 362 bent and extending along the upper end of the pipe head part 361, and the joint part 362 is sealingly arranged with the air outlet nozzle 17512. The joint part 362 is located in the air outlet nozzle 17512, and a circumferential sealing groove is arranged outside the joint part 362, and a sealing ring is arranged in the sealing groove to realize sealing between the joint part 362 and the air outlet nozzle 17512.

[0176] In some embodiments of the present application, the filter cavity 17 has a first cavity wall 171 arranged opposite to the air inlet end, a second cavity wall 172 arranged in connection with the first cavity wall 171, and the air inlet pipe head 36 extends into the avoidance slot 175 from the direction of the second cavity wall 172. The avoidance slot 175 is arranged on the first cavity wall 171 and the second cavity wall 172. In this embodiment, the air inlet end of the filter cavity 17 is located at the rear end of the filter cavity 17, the first cavity wall 171 is the front cavity wall of the filter cavity 17, the second cavity wall 172 is the bottom cavity wall, and the air inlet pipe head 36 extends into the filter cavity 17 from below.

[0177] In some embodiments of the present application, as shown in FIGS. 9-14, the filter cavity 17 is provided with a support limiting portion 176 abutting the inner side of the second filter 177, and the support limiting portion 176 is arranged in connection with the avoidance slot 175. The support limiting portion 176 is arranged in extension along the avoidance slot 175 towards the second filter 177. The second filter 177 is arranged for filtering the gas flowing into the filter cavity 17, and the support limiting portion 176 is arranged for limiting the inner side of the second filter 177.

[0178] In some embodiments of the present application, the support limiting portion 176 is a plurality of support columns 1761 arranged in extension along the avoidance slot 175 towards the air inlet end, and the plurality of support columns 1761 are arranged in parallel in the up-down direction. One or more support limiting portions 176 can be arranged. The second filter 177 is a folded filter paper structure, and the second filter 177 has a plurality of turning portions 1771 capable of extending into the gap between adjacent two support columns 1761; the turning portions 1771 are capable of limiting the second filter 177 in the inner-outer direction and uniformly distributing the second filter 177 in the up-down direction.

[0179] In some embodiments of the present application, the filter cavity 17 has a cavity body 170 and a filter frame 178 arranged around the outer side of the second filter 177. The filter frame 178 is detachably arranged on the cavity body 170, and after the filter cavity 17 is disassembled, the second filter 177 can be replaced by disassembling the filter frame 178. The edge of the filter frame 178 is provided with an outer stop edge 1781 for limiting the second filter 177. The outer stop edge 1781 is arranged to form the second air inlet 173.

[0180] In some embodiments of the present application, the second filter 177 is located outside the air outlet hole 17511, and is spaced apart from the air outlet hole 17511; the avoiding groove 175 has a first groove wall 1751 with the air outlet hole 17511, the first groove wall 1751 is parallel to the second filter 177, and the second filter 177 is spaced apart from the first groove wall 1751, and the second filter 177 and the first groove wall 1751 form a gas supply cavity. In the filter cavity 17, the gas filtered by the second filter 177 enters the gas supply cavity, and the gas in the gas supply cavity can form a smooth gas flow, and then is supplied to the air outlet hole 17511; it is beneficial to provide the gas to the air inlet pipe head 36, the pressure is smooth, the flow is smooth, and it is beneficial to the operation of the compressor.

[0181] In some embodiments of the present application, referring to FIGS. 9, 17 and 18, the first avoiding opening 1811 for avoiding the air inlet pipe head 36 is arranged on the first groove wall 181 of the installation cavity 18; by arranging the first avoiding opening 1811, the air inlet pipe head 36 extends into the installation cavity 18 through the first avoiding opening 1811. The first groove wall 181 is the lower groove wall of the installation cavity 18. The air inlet pipe head 36 has a pipe head portion 361 and a mounting plate 363 arranged outside the pipe head portion 361, and the installation cavity 18 has an installation groove 1812 arranged on the inner side of the first avoiding opening 1811 and used for accommodating the mounting plate 363, and the mounting plate 363 is located in the installation groove 1812. By arranging the mounting plate 363 and the installation groove 1812, the air inlet pipe head 36 is limited in the installation cavity 18, the air inlet pipe head 36 is limited in the outward direction, and the air inlet pipe head 36 is connected to the filter cavity 17 and the air inlet pipe through the two ends of the air inlet pipe head 36, so that the air inlet pipe head 36 is firmly installed and fixed. The mounting plate 363 is located in the installation groove 1812, and the air inlet pipe head 36 is limited in the downward direction and the circumferential direction.

[0182] In some embodiments of the present application, the first avoiding opening 1811 is a U-shaped groove, and the upper end surface of the mounting plate 363 is flush with the upper end surface of the first groove wall 181; after the air inlet pipe head 36 is installed, the inner side of the first groove wall 181 of the installation cavity 18 is flush, and the pipe head portion 361 extends into the installation cavity 18, which is beneficial to the installation operation of the filter cavity 17.

[0183] In some embodiments of the present application, the air inlet pipe head 36 has a limiting post 364, a first connecting part 365 connecting the limiting post 364 and the pipe head part 361; a limiting slot 1813 matched with the limiting post 364 is arranged on the first slot wall 181, and the limiting post 364 is located in the limiting slot 1813. The limiting post 364 is used to limit the movement of the air inlet pipe head 36 to the open end of the first avoiding port 1811, and the limiting post 364 is located at the rear side of the pipe head part 361, and the front side of the first avoiding port 1811 is the open end, that is, the limiting post 364 is mainly used to limit the movement of the air inlet pipe head 36 in the forward direction, and of course, the limiting post 364 and the limiting slot 1813 can limit the movement of the air inlet pipe head 36 in other directions except upward. The limiting post 364 is installed into the limiting slot 1813 from top to bottom.

[0184] In some embodiments of the present application, the limiting post 364 is located at the outer end of the first connecting part 365, and the limiting post 364 is arranged in parallel with the axial direction of the pipe head part 361; and the end of the limiting slot 1813 away from the first slot wall 181 is the loading end when the limiting post 364 is installed. The air inlet pipe head 36 is installed from top to bottom, so that the lower end of the pipe head part 361 is connected with the air inlet pipe, and at the same time, the limiting post 364 is installed into the limiting slot 1813.

[0185] In some embodiments of the present application, the air inlet pipe head 36 further has a second connecting part 366 connected between the mounting plate 363 and the first connecting part 365, the second connecting part 366 is arranged in a spaced manner with the limiting post 364, and the second connecting part 366 is arranged in connection with the pipe head part 361. The second connecting part 366 is arranged to support the first connecting part 365 and increase the structural strength. The second slot wall 182 of the mounting cavity 18 is provided with a second avoiding port connected with the first avoiding port 1811. The avoiding slot 175 is located inside the first avoiding port 1811 and the second avoiding port.

[0186] In some embodiments of the present application, the filtering cavity 17 is provided with an avoiding slot 175 arranged in a concave manner, the avoiding slot 175 is used to avoid the air inlet pipe head 36, and the air inlet pipe head 36 extends into the avoiding slot 175; the avoiding slot 175 is arranged, which is beneficial to compact structure and reduces the occupied space; and in the process of mounting and dismounting the filtering cavity 17 along the joint part 362 in the axial direction, the air inlet pipe head 36 is avoided. The avoiding slot 175 is located above the first avoiding port 1811.

[0187] In some embodiments of the present application, referring to FIG. 9 and FIG. 16, a first air inlet pipe 37 is arranged in the equipment cavity 20, the lower end of the pipe head 361 is connected with the first air inlet pipe 37, and a reserved opening 231 is arranged on the top plate 23 of the equipment cavity 20 and located above the first air inlet pipe 37; the pipe head 361 is arranged by penetrating through the reserved opening 231 and being connected with the first air inlet pipe 37. The compressor 35 is arranged in the compressor cavity 30, the equipment cavity 20 is arranged above the compressor cavity 30, and the mounting cavity 18 is arranged above the equipment cavity 20. When the air inlet pipe head 36 is installed downward, the lower end of the pipe head 361 is connected with the first air inlet pipe 37 by penetrating through the reserved opening 231, the mounting plate 363 is arranged in the mounting groove 1812, and the limiting column 364 is arranged in the limiting groove 1813, so that the lower end of the air inlet pipe head 36 is connected and fixed, which is beneficial to simplify the installation operation steps and improve the installation and fixing efficiency.

[0188] In some embodiments of the present application, a support edge 232 extending upward is arranged at the edge of the reserved opening 231, and the support edge 232 is used for supporting the mounting plate 363. The upper end of the support edge 232 is arranged flush with the groove bottom of the mounting groove 1812.

[0189] In some embodiments of the present application, referring to FIG. 20 and FIG. 21, the first air inlet 155 is arranged to extend in the inward direction away from the first air inlet 161, that is, the first air inlet 155 is arranged to extend in the outward direction close to the first air inlet 161; so that the external air entering the first air inlet 155 flows in the inward direction and towards the first air inlet 155 in the air inlet cavity 15, the inclined direction of the first air inlet 155 is consistent with the flow direction of the air flow in the air inlet cavity 15, which is beneficial to the smooth flow of the heat dissipation air path. Preferably, the inclined extension size of the first air inlet 155 in the inward direction is greater than or equal to the width of the air inlet side 1551 of the first air inlet 155. The first air inlet 155 has an air inlet side 1551 and an air outlet side 1552, and the distance between the plane where the lower end of the air inlet side 1551 is located and the plane where the lower end of the air outlet side 1552 is located is the inclined extension size of the first air inlet 155 in the inward direction; the size of the first air inlet 155 in the upward and downward directions is the width, and the inclined extension size is greater than or equal to the width of the air inlet side 1551, so that only the arc-shaped air inlet face 1553 of the first air inlet 155 can be seen from the outside of the first air inlet 155 to the inside.

[0190] In some embodiments of the present application, the first air inlet 155 has two arc-shaped air inlet surfaces 1553 which are inclined and oppositely arranged in the up-down direction, and the arc-shaped air inlet surfaces 1553 are concave. By arranging the arc-shaped air inlet surfaces 1553, the cross-sectional size of the first air inlet 155 is increased, and the airflow passing through is increased. A plurality of first air inlets 155 are arranged in parallel on the bottom 152 of the air inlet cavity 15, and the first air inlets 155 are arranged in the horizontal direction. The distance between two adjacent first air inlets 155 is equal to the width of the first air inlet 155.

[0191] In some embodiments of the present application, the oxygen production device 100 is provided with a heat dissipation air duct 40.

[0192] Referring to FIGS. 22-31, the heat dissipation air duct 40 includes a first air duct 41, a second air duct 42, and a first air inlet 155 arranged at the inlet end of the first air duct 41, and the first air inlet 155 is arranged on the first side wall 11 of the shell 10. The shell 10 is approximately square-shaped, and has four side walls. The compressor cavity 30 and the device cavity 20 are also square-shaped shells, and are arranged in a spaced manner between the side walls of the shell 10. The first side wall 11 and the second side wall 12 of the shell 10 are oppositely arranged, and the first side plate 21 adjacent to the first side wall 11 of the device cavity 20 and the second side plate 22 adjacent to the second side wall 12 are oppositely arranged. The arrow direction in FIG. 2 represents the flow direction of the heat dissipation airflow.

[0193] In the embodiment, the first air duct 41 is located between the top wall 13 of the shell 10 and the top plate 23 of the equipment cavity 20, and the second air duct 42 is connected with the first air duct 41 and located between the second side wall 12 of the shell 10 and the second side plate 22 of the equipment cavity 20. The heat dissipation airflow blown from the first air inlet 155 enters the first air duct 41, that is, blows from above the equipment cavity 20 and then flows downward into the second air duct 42. The fan 25 for providing power for the airflow in the heat dissipation air duct 40 is arranged in the equipment cavity 20, and after the fan 25 is turned on, negative pressure is generated in the first air duct 41 and the second air duct 42, so that external air enters the heat dissipation air duct 40 through the first air inlet 155. The compressor 35 is arranged in the compressor cavity 30, and the heat dissipation airflow flows through the compressor 35 to dissipate heat for the compressor 35. By arranging the equipment cavity 20, the space in the shell 10 is separated into multiple interval spaces, the length of the air duct is increased, and the number of components through which the heat dissipation airflow flows is increased; and the communication between the interval spaces and the communication with the outside are arranged to form a winding and smooth air path, and the heat dissipation efficiency of the components in the heat dissipation air duct 40 is increased. By arranging the first air duct 41, after the airflow enters from the first air inlet 155, the airflow flows between the top wall 13 of the shell 10 and the top plate 23 of the equipment cavity 20, and the heat dissipation airflow flows from above the equipment cavity 20, so that the heat dissipation of the components above the top plate 23 of the equipment cavity 20 is facilitated, and the heat dissipation effect is improved. While the heat dissipation airflow continues to dissipate heat for the main heat dissipation component compressor 35, the heat dissipation air path is extended, the components through which the airflow flows are increased, and the heat dissipation of other heat dissipation components is facilitated.

[0194] In some embodiments of the present application, as shown in FIGS. 23 and 24, the second air inlet 221 is arranged on the second side plate 22 of the equipment cavity 20, and the airflow in the second air duct 42 enters the equipment cavity 20 through the second air inlet 221. The plane where the top plate 23 of the equipment cavity 20 is arranged is lower than the first air inlet 155, so that the airflow entering from the first air inlet 155 is directly blown above the equipment cavity 20. The second air inlet 221 is arranged on the second side plate 22, so that the airflow in the second air duct 42 is sucked into the equipment cavity 20; the first air inlet 155 is arranged on the first side wall 11, so that the heat dissipation air duct 40 flows above the equipment cavity 20, is then bent downward, and then reaches the equipment cavity 20 through the second air inlet 221. Compared with the existing air duct arrangement, the first air duct 41 and the second air duct 42 are added.

[0195] In some embodiments of the present application, the oxygen generating device 100 has a first circuit board 29 located in the first air duct 41, and the first circuit board 29 is fixed on the top plate 23 of the device cavity 20. The heat dissipation airflow flows through the first circuit board 29, which can take away the heat on the first circuit board 29. The first circuit board 29 is a top circuit board, which generates heat during operation. The first circuit board 29 is arranged in the first air duct 41, which is beneficial to timely taking away the heat. The first component is a sensing component, a detection component, etc.

[0196] In some embodiments of the present application, a panel frame 19 is arranged between the top wall 13 and the second side wall 12 of the shell 10, and the panel frame 19 is arranged obliquely away from the second side wall 12 in the upward direction. The panel frame 19 forms a guide flow for the airflow on the inner side of the panel frame 19, and the control panel is arranged at the panel frame 19. In the normal use state of the oxygen generating device, the side close to the user is the front, and vice versa. The second side wall 12 is the front panel of the oxygen generating device. When the airflow in the first air duct 41 flows through the inner side of the panel frame 19, it needs to be bent downward to change the direction of the airflow. The oblique arrangement of the panel frame 19 plays a role in guiding the airflow.

[0197] In some embodiments of the present application, the first circuit board 29 is arranged in a spaced manner with the top plate 23 of the device cavity 20. On the one hand, it can increase the damping effect and avoid the vibration of the top plate 23 being directly transmitted to the first circuit board 29. On the other hand, the heat dissipation airflow can pass through the upper and lower sides of the first circuit board 29. The upper and lower end faces of the first circuit board 29 can be in contact with the heat dissipation airflow, which is beneficial to increase the contact area between the first circuit board 29 and the heat dissipation airflow and improve the heat dissipation effect. The first circuit board 29 is arranged in parallel with the top plate 23. The first circuit board 29 is arranged in a spaced manner with the top plate 23. The heat generated by the first circuit board 29 can be transmitted to the top plate 23, and the top plate 23 plays a role as a heat sink of the first circuit board 29. When the heat dissipation airflow passes through the first air duct 41, part of the heat on the top plate 23 is also taken away. A plurality of support columns 28 are arranged on the top plate 23 of the device cavity 20, and the first circuit board 29 is fixed on the plurality of support columns 28, thereby achieving the spaced arrangement of the first circuit board 29 and the top plate 23.

[0198] In some embodiments of the present application, as shown in FIGS. 30 and 31, the support column 28 has a column body 281 and a clamping limiting top cap 282 located at the upper end of the column body 281. A first fixing hole 291 matched with the clamping limiting top cap 282 is formed in the first circuit board 29, and the clamping limiting top cap 282 is clamped and fixed with the first fixing hole 291. The support column 28 is arranged to achieve the spaced arrangement of the first circuit board 29 and the top plate 23. The clamping limiting top cap 282 is arranged to achieve the clamping and fixing of the support column 28 and the first circuit board 29, which is beneficial to improve the installation efficiency.

[0199] In some embodiments of the present application, the clamping limiting top cap 282 has a connecting portion 2821 arranged in connection with the column 281, two clamping claws 2822 arranged opposite to the top end of the connecting portion 2821, the clamping claw 2822 has a claw portion 28221 away from the connecting portion in the downward direction, and an abutting portion 28222 arranged extending downward along the claw portion 28221, the abutting portion 28222 abuts against the upper end surface of the first circuit board 29. The two claw portions 28221 are away from each other in the downward direction, achieving clamping with the first fixing hole 291; the abutting portion 28222 is arranged to limit the upward movement of the first circuit board 29. An elastic plate 283 abutting against the lower end surface of the first circuit board 29 is arranged on the column 281, and the elastic plate 283 is located on the lower side of the clamping limiting top cap 282. By arranging the elastic plate 283, the downward movement of the first circuit board 29 is limited, ensuring the stability of the fixation of the first circuit board 29. The elastic plate 283 is arranged in an upward arc shape in the direction away from the column 281, when the support column 28 is installed to the first circuit board 29, in order to achieve clamping of the clamping limiting top cap 282 through the first fixing hole 291, the elastic plate 283 is deformed downward by the first circuit board 29, and then the elastic plate 283 can move upward to reset, achieving fixation of the first circuit board 29 between the elastic plate 283 and the abutting portion 28222, achieving firm fixation.

[0200] In some embodiments of the present application, the lower end of the support column 28 is provided with a clamping limiting bottom cap 284, which can adopt the same structure as the clamping limiting top cap 282 to achieve clamping and fixation of the lower end of the support column 28 on the top plate 23. The lower end of the support column 28 can also adopt other structures that can achieve fixation. A plurality of support columns 28 are arranged between the top plate 23 and the first circuit board 29 to support the first circuit board 29.

[0201] In some embodiments of the present application, as shown in FIG. 24, a heat dissipation pipe 351 connected with the compressor 35 is arranged in the equipment cavity 20, the heat dissipation pipe 351 is used for conveying compressed gas, and the heat dissipation pipe 351 is arranged in an S-shaped structure, which can increase the contact area between the heat dissipation pipe 351 and the heat dissipation airflow, facilitating heat dissipation. The heat dissipation pipe 351 is arranged on the inner side of the second air inlet 221, and the heat dissipation airflow in the second air duct 42 enters the inside of the equipment cavity 20 through the second air inlet 221, so that the heat dissipation pipe 351 can be first heat-dissipated.

[0202] In some embodiments of the present invention, referring to Figure 28, a second circuit board 27 is provided inside the equipment cavity 20. The second circuit board 27 is fixed on the first side plate 21 of the equipment cavity 20. The first side plate 21 and the second side plate 22 are arranged opposite to each other. The second circuit board 27 is spaced apart from the first side plate 21 and is arranged parallel to the first side plate 21. The spaced arrangement of the second circuit board 27 and the first side plate 21 has several advantages: first, it increases the shock absorption effect, preventing the vibration of the first side plate 21 from being directly transmitted to the second circuit board 27; second, the smaller gap between the second circuit board 27 and the first side plate 21 allows the heat emitted by the second circuit board 27 to be transferred to the first side plate 21, which then acts as a heat sink for the second circuit board 27; and third, the cooling airflow can pass through the inner and outer sides of the second circuit board 27, which helps to increase the contact area between the second circuit board 27 and the cooling airflow, thereby improving the heat dissipation effect. The cooling airflow entering the equipment cavity 20 first passes through the inner and outer sides of the second circuit board 27 to dissipate heat from the second circuit board 27, and then is drawn into the fan 25.

[0203] In some embodiments of the present invention, referring to FIG29, a fixing bracket 211 for fixing a second circuit board 27 is provided on the first side plate 21. The fixing bracket 211 has a support portion 2111 extending inward along the first side plate 21 and a fixing portion 2112 extending and bent along the inner end of the support portion 2111. The second circuit board 27 is fixed on the fixing portion 2112. By providing the fixing bracket 211, the second circuit board 27 can be fixed and spaced apart from the first side plate 21. The second circuit board 27 is fixed on the fixing portion 2112 by fasteners. The second circuit board 27 is vertically arranged, and multiple fixing brackets 211 are provided on the first side plate 21.

[0204] In some embodiments of the present invention, the components within the oxygen generator 100 are categorized and integrated. Components with low heat dissipation during operation are placed on the first circuit board 29, fixed to the upper side of the top plate 23 of the equipment cavity 20, located within the first air duct 41. The first circuit board 29 is equipped with multiple first components, such as sensing components, detection components, etc. Components with high heat dissipation during operation are placed on the second circuit board 27, fixed inside the equipment cavity 20, to prevent heat from being rapidly transferred to the outside of the outer casing 10; and the heat is carried away by the airflow within the heat dissipation air duct 40. The second circuit board 27 is equipped with multiple second components, such as drive components for fans and compressors, etc.

[0205] In some embodiments of the present application, the equipment cavity 20 and the compressor cavity 30 are arranged adjacently, the bottom plate of the equipment cavity 20 simultaneously serves as the cavity top 33 of the compressor cavity 30, the third air inlet 331 for sending air to the compressor cavity 30 is arranged on the cavity top 33, and the fan 25 is fixed at the third air inlet 331. The fan 25 blows the heat dissipation airflow downward into the compressor cavity 30 through the third air inlet 331.

[0206] In some embodiments of the present application, the oxygen generating device 100 further comprises a sound attenuation unit 50 arranged below the compressor cavity 30, and the fourth air inlet 341 for conveying the airflow in the compressor cavity 30 to the sound attenuation unit 50 is arranged on the bottom plate of the compressor cavity 30. The downwardly extending air outlet cavity 14 is arranged on the bottom wall of the shell 10, and the air outlet 141 for discharging the gas is arranged on the side wall of the air outlet cavity 14. By arranging the sound attenuation unit 50, the sound attenuation is performed when the gas is discharged, so that the noise is not too large. By arranging the air outlet cavity 14, the gas is not directly discharged downward from the oxygen generating device 100, but is discharged from the air outlet 141 on the side wall, so that the length and the bending of the air outlet path are increased, the sound attenuation effect is further achieved, and the impact of the directly downward discharged gas on the ground is avoided, so that the subsequent discharge of the gas is not affected.

[0207] In the present embodiment, the first side wall 11 is the rear wall of the shell 10, that is, the first air inlet 155 is arranged on the rear wall of the shell 10. After the fan 25 is started, the gas in the equipment cavity 20 is first sucked into the fan 25, so that the negative pressure is generated in the equipment cavity 20. The gas outside the equipment cavity 20 is supplemented into the equipment cavity 20 through the second air inlet 221 of the second side plate 22, that is, the gas in the second air duct 42 is sucked into the equipment cavity 20, so that the negative pressure is generated in the second air duct 42. The gas of the first air duct 41 is supplemented into the second air duct 42, and then the external air enters the first air duct 41 through the first air inlet 155 on the first side wall 11 of the shell 10. That is, the external air enters the first air duct 41 through the first air inlet 155, the heat dissipation airflow flows through the first circuit board 29, and part of the heat emitted by the first circuit board 29 is carried away. Then, the heat dissipation airflow bends downward through the flow guide of the panel frame 19 into the second air duct 42, and enters the equipment cavity 20 through the second air inlet 221. The heat dissipation airflow flows through the heat dissipation pipe 351, and part of the heat dissipation airflow flows through the second circuit board 27. Then, the heat dissipation airflow enters the fan 25 and is blown downward into the compressor cavity 30 to cool the compressor 35. Then, the heat dissipation airflow enters the sound attenuation unit 50 through the fourth air inlet 341 to be subjected to sound attenuation treatment. Finally, the heat dissipation airflow reaches the air outlet cavity 14 and is discharged through the air outlet 141.

[0208] In some embodiments of the present application, the oxygen generating device 100 is provided with an exhaust gas sound attenuation device.

[0209] As shown in FIGS. 32-51, the exhaust silencer includes a bottom cover 51, a bottom shell 52, and an exhaust cover 53.

[0210] The top of the bottom cover 51 forms a silencing air inlet 510, and the bottom shell 52 forms a sunken bottom shell groove 521, one end of which forms a silencing air outlet 522. The exhaust cover 53 is arranged in the bottom shell groove 521, and one end of the exhaust cover 53 extends to the silencing air outlet 522, and the other end forms a hollow hole 531.

[0211] The bottom cover 51 is connected to the bottom shell 52 and covers the bottom shell groove 521, and a first exhaust silencing cavity 54 is formed between the outer side of the exhaust cover 53 and the bottom cover 51, which communicates with the silencing air inlet 510. A second exhaust silencing cavity 55 is formed between the inner side of the exhaust cover 53 and the bottom shell 52, which communicates with the silencing air outlet 522.

[0212] The airflow to be processed for noise reduction enters the first exhaust silencing cavity 54 through the silencing air inlet 510 on the bottom cover 51, then enters the second exhaust silencing cavity 55 through the hollow hole 531 on the exhaust cover 53, and finally is discharged through the silencing air outlet 522. The airflow from the first exhaust silencing cavity 54 enters the second exhaust silencing cavity 55 through the hollow hole 531, changes the flow direction, consumes the energy of the sound, and reduces the noise, so that the noise of the airflow discharged from the silencing air outlet 522 is reduced.

[0213] Specifically, the hollow hole 531 of the exhaust cover 53 is arranged at the end away from the silencing air outlet 522, which can prolong the path of the airflow through the second exhaust silencing cavity 55, thereby fully reducing the noise of the airflow. The silencing air inlet 510 can be arranged at the end of the bottom cover 51 away from the hollow hole 531 to prolong the path of the airflow through the first exhaust silencing cavity 54 and improve the silencing effect. The hollow hole 531 on the exhaust cover 53 is arranged in multiple and arrayed, which can guide the direction of the airflow and play a silencing role. The silencing air outlet 522 can be arranged on the side wall of the bottom shell groove 521 or on the bottom of the bottom shell groove 521.

[0214] The bottom cover 51 is fixedly connected to the bottom shell 52, and specifically, the bottom cover 51 and the bottom shell 52 can be connected by fasteners, buckles, plugs, or other detachable ways. The exhaust cover 53 is detachably connected in the bottom shell groove 521 of the bottom shell 52, which has a simple overall structure, low manufacturing cost, convenient installation and disassembly, and good noise reduction effect.

[0215] The exhaust silencing device is arranged in the oxygen generating device, the compressor cavity 30 of the oxygen generating device is provided with the compressor 35, the third air duct 43 for heat dissipation of the compressor 35 is formed in the compressor cavity 30, the separated nitrogen of the oxygen generating device and the heat dissipation airflow in the third air duct 43 can be discharged after entering the exhaust silencing device, the exhaust silencing device can reduce the noise of the airflow and reduce the noise transmission of the inside of the oxygen generating device, thereby providing a quiet oxygen environment for the user.

[0216] The exhaust silencing device is arranged below the compressor 35 and at the bottom of the oxygen generating device, which can reduce the noise generated by the compressor from the bottom of the oxygen generating device.

[0217] In some embodiments, as shown in FIGS. 34 and 35, the silencing air inlet 510 includes a first silencing air inlet 511 and a second silencing air inlet 512, which are respectively close to opposite ends of the bottom cover 51, and the airflow can enter the first exhaust silencing cavity 54 through the first silencing air inlet 511 and the second silencing air inlet 512.

[0218] Two air inlets are arranged at both ends of the bottom cover 51, which can increase the flow of the airflow entering the exhaust silencing device, ensure the heat dissipation effect of the heat dissipation airflow on the compressor 35, and avoid overheating of the compressor. In addition, the first silencing air inlet 511 and the second silencing air inlet 512 are respectively close to the cylinders at both ends of the compressor 35, and the heat dissipation airflow can quickly take away the heat of the cylinders at both ends of the compressor 35.

[0219] Further, the first silencing air inlet 511 is close to the silencing air outlet 522 of the bottom shell 52, and the second silencing air inlet 512 is close to the hollow hole 531 of the exhaust cover 53, and the airflow entering the second silencing air inlet 512 can quickly enter the second exhaust silencing cavity 55 through the hollow hole 531, reducing the obstruction to the airflow, so that the airflow outflow is smooth, and the heat dissipation effect of the compressor is ensured.

[0220] In an embodiment, as shown in FIGS. 34 and 35, the opening area of the first silencing air inlet 511 is greater than that of the second silencing air inlet 512, the airflow entering the first silencing air inlet 511 is greater than that of the second silencing air inlet 512, more airflow enters the first exhaust silencing cavity 54 through the first silencing air inlet 511, the flow path in the first exhaust silencing cavity 54 is longer, and the noise reduction effect of the first exhaust silencing cavity 54 is fully played. At the same time, the second silencing air inlet 512 is opened to discharge the heat generated by the compressor above it, avoiding the accumulation of hot air above it, thereby reducing the overall heat dissipation performance.

[0221] In some embodiments, as shown in FIGS. 36, 37 and 38, the perforated holes 531 are distributed on the top surface and the side surface of the exhaust cover 53, and the side surface of the exhaust cover 53 forms a slot inner gap 56 with the side wall of the bottom shell groove 521, and the slot inner gap 56 communicates with the first exhaust muffling cavity 54. Part of the gas in the first exhaust muffling cavity 54 can enter the slot inner gap 56, and then enter the second exhaust muffling cavity 55 through the perforated holes 531 on the side surface of the exhaust cover 53, which can reduce the obstruction of the exhaust cover 53 to the airflow. The exhaust cover 53 can be arranged in a U-shaped structure, or in a circular arc structure. One end of the exhaust cover 53 surrounds the muffling air outlet 522, so that the airflow can only pass through the second exhaust muffling cavity 55 to reach the muffling air outlet 522.

[0222] The exhaust cover 53 includes an upper cover plate 532 and at least one side cover plate 533, and the perforated holes 531 are distributed on the upper cover plate 532 and the side cover plate 533. The side cover plate 533 forms a slot inner gap 56 with the corresponding side wall of the bottom shell groove 521.

[0223] In one embodiment, the exhaust cover 53 includes an upper cover plate 532 and one side cover plate 533, and forms an L-shaped structure.

[0224] In one embodiment, as shown in FIGS. 37 and 38, the exhaust cover 53 includes an upper cover plate 532 and two side cover plates 533, and the two side cover plates 533 are respectively connected to the opposite two side edges of the upper cover plate 532. The first exhaust muffling cavity 54 is located outside the upper cover plate 532, the second exhaust muffling cavity 55 is located between the upper cover plate 532 and the two side cover plates 533, and the slot inner gap 56 is formed between the side cover plate 533 and the side wall of the bottom shell groove 521. The perforated holes 531 are arranged at the end of the upper cover plate 532 and the two side cover plates 533 away from the muffling air outlet 522. The bottom of the two side cover plates 533 abuts against the groove bottom of the bottom shell groove 521, and one end of the upper cover plate 532 and the two side cover plates 533 extends to the muffling air outlet 522, and the other end extends to the side wall of the bottom shell groove 521 opposite to the muffling air outlet 522.

[0225] In another specific embodiment, as shown in FIGS. 40 and 41, the exhaust cover 53 includes an upper cover plate 532 and three side cover plates 533. One side edge of the upper cover plate 532 is close to the muffling air outlet 522, and the three side cover plates 533 are respectively connected to the edges of the upper cover plate 532 away from the muffling air outlet 522. Adjacent side cover plates 533 are connected to each other.

[0226] The first exhaust muffling cavity 54 is located outside the upper cover plate 532, the second exhaust muffling cavity 55 is located between the upper cover plate 532 and the three side cover plates 533, and the three side cover plates 533 form a slot inner gap 56 with the side wall of the bottom shell groove 521, respectively.

[0227] The first sound-damping air inlet 511 and the second sound-damping air inlet 512 are arranged, and the exhaust cover 53 is arranged in a structure, so that the exhaust sound-damping device can increase the exhaust volume to ensure the heat dissipation effect of the compressor 35 and can sufficiently reduce the noise of the airflow to ensure the noise reduction effect.

[0228] In some embodiments, as shown in FIG. 37, a positioning structure can be arranged on the bottom cover 52, and the positioning structure cooperates with the exhaust cover 53 to limit the installation position of the exhaust cover 53. Further, the exhaust cover 53 can be fixedly connected to the bottom cover 52 by screws or other fasteners.

[0229] Specifically, the positioning structure includes a first positioning groove 523 arranged at the bottom of the bottom cover groove 521, and the bottom of the side cover plate 533 of the exhaust cover 53 is clamped and cooperated with the first positioning groove 523. The positioning structure further includes a second positioning groove 524 arranged at the edge of the bottom cover groove 521, and the second positioning groove 524 is located at the top of the sound-damping air outlet 522. The edge of the upper cover plate 532 of the exhaust cover 53 is provided with a flange 534, and the flange 534 can be cooperated in the second positioning groove 524. The exhaust cover 53 is installed in place under the limitation of the positioning structure, and the edges of the exhaust cover 53 are attached to the bottom cover 52. The airflow can only pass through the hollow hole 531 to enter the second exhaust sound-damping cavity 55, so as to avoid the gap between the exhaust cover 53 and the bottom cover 52 to affect the flow path of the airflow.

[0230] In some embodiments, the first exhaust sound-damping cavity 54 and / or the second exhaust sound-damping cavity 55 are respectively provided with exhaust sound-absorbing cotton 57, and the exhaust sound-absorbing cotton 57 can absorb the noise of the airflow in the first exhaust sound-damping cavity 54 and / or the second exhaust sound-damping cavity 55.

[0231] In some embodiments, the top surface of the bottom cover 51 is provided with exhaust sound-absorbing cotton 57. The exhaust sound-damping device is arranged at the bottom of the oxygen production equipment, and the compressor is located above the bottom cover 51. The exhaust sound-absorbing cotton 57 on the top surface of the bottom cover 51 can absorb the noise of the compressor.

[0232] The exhaust sound-absorbing cotton 57 can be arranged in a layered structure and fixedly connected to the bottom cover 51, the bottom cover 52 or the exhaust cover 53 by bonding, clamping, fastener connection or the like. The exhaust sound-absorbing cotton 57 can be selected from porous sound-absorbing cotton such as inorganic fiber, organic fiber, inorganic foam, foamed plastic or other existing sound-absorbing cotton.

[0233] It should be noted that: sound-absorbing cotton mainly realizes the noise reduction effect through its internal porous structure and fiber material. When sound enters the sound-absorbing cotton, the sound wave causes the internal material to vibrate, and the sound wave capacity is converted into tiny heat energy through the fiber material, so that the sound intensity is weakened. However, if too much sound-absorbing cotton is arranged, the heat dissipation performance will be reduced. Therefore, the arrangement position of the sound-absorbing cotton and the smoothness of the air passage need to be reasonably distributed, so as to ensure the heat dissipation and quietness of the equipment.

[0234] In some embodiments, the top of the bottom cover 51 and the first exhaust silencing cavity 54 are provided with exhaust sound-absorbing cotton 57. As shown in FIGS. 42, 43, and 44, the bottom cover 51 includes a bottom cover top plate 513 and a bottom cover side plate 514 connected to the four peripheral edges of the bottom cover top plate 513. The top surface of the bottom cover top plate 513 is provided with first exhaust sound-absorbing cotton 571 for reducing noise inside the oxygen generating equipment. The bottom surface of the bottom cover top plate 513 is provided with second exhaust sound-absorbing cotton 572, and the inner side of the bottom cover side plate 514 is provided with third exhaust sound-absorbing cotton 573. The second exhaust sound-absorbing cotton 572 and the third exhaust sound-absorbing cotton 573 are arranged in the first exhaust silencing cavity 54 to absorb the noise of the airflow in the first exhaust silencing cavity 54. The first exhaust sound-absorbing cotton 571 and the second exhaust sound-absorbing cotton 572 respectively form through holes corresponding to the air inlets, in detail, the first exhaust sound-absorbing cotton 571 and the second exhaust sound-absorbing cotton 572 respectively form through holes corresponding to the first silencing air inlet 511 and the second silencing air inlet 512, so as to expose the first silencing air inlet 511 and the second silencing air inlet 512, facilitating the rapid flow of airflow.

[0235] The top surface of the exhaust cover 53 is provided with fourth exhaust sound-absorbing cotton 574, which is configured to avoid the slot inner gap 56 of the side surface of the exhaust cover 53 and the hollow hole 531 of the top surface of the exhaust cover 53, so as to reduce the air inlet resistance, so that the airflow in the first exhaust silencing cavity 54 can smoothly pass through the exhaust cover 53 and enter the second exhaust silencing cavity 55. The fourth exhaust sound-absorbing cotton 574 is located in the first exhaust silencing cavity 54 to absorb the noise of the airflow in the first exhaust silencing cavity 54.

[0236] The second exhaust sound-absorbing cotton 572, the third exhaust sound-absorbing cotton 573, and the fourth exhaust sound-absorbing cotton 574 surround the inner wall of the first exhaust silencing cavity 54. When the airflow passes through the space surrounded by the second exhaust sound-absorbing cotton 572, the third exhaust sound-absorbing cotton 573, and the fourth exhaust sound-absorbing cotton 574, the sound is absorbed.

[0237] Further, as shown in FIGS. 35, 36, and 37, the fifth exhaust sound-absorbing cotton 575 is arranged in the second exhaust silencing cavity 55, and the fifth exhaust sound-absorbing cotton 575 is arranged at the bottom of the bottom shell groove 521. The fifth exhaust sound-absorbing cotton 575 can reduce the noise of the airflow in the second exhaust silencing cavity 55.

[0238] The side wall of the bottom shell groove 521 and the outer side of the side cover plate 533 of the exhaust cover 53 can also be provided with sound-absorbing cotton to reduce the noise of the airflow in the slot gap 56. The sound-absorbing cotton in the slot gap 56 needs to avoid the hollow holes 531 on the side of the exhaust cover 53.

[0239] The first exhaust sound-absorbing cotton 571, the second exhaust sound-absorbing cotton 572, the fourth exhaust sound-absorbing cotton 574, and the fifth exhaust sound-absorbing cotton 575 are arranged below the compressor to form a multi-layer sound-absorbing structure, which can effectively isolate the noise generated by the compressor and effectively reduce the noise of the compressor 35 from the bottom of the oxygen production equipment.

[0240] In some embodiments, as shown in FIG. 36, the area covered by the bottom cover 51 is larger than the bottom shell groove 521, the space of the first exhaust sound-absorbing cavity 54 is larger than the space of the second exhaust sound-absorbing cavity 55, which can play a role in variable-diameter sound-absorbing, and the airflow stays in the first exhaust sound-absorbing cavity 54 for a longer time, which can sufficiently reduce the noise. The fourth exhaust sound-absorbing cotton 574 extends to the edge of the bottom shell groove 521, fully surrounding the first exhaust sound-absorbing cavity 54.

[0241] In one embodiment, as shown in FIG. 45, the air inlet on the bottom cover 51 is a single through hole. Specifically, the first sound-absorbing air inlet 511 and the second sound-absorbing air inlet 512 are single through holes, respectively, and extend to opposite sides of the bottom cover 51, respectively, to increase the opening area.

[0242] In one embodiment, as shown in FIG. 46, the air inlet on the bottom cover 51 is composed of a plurality of arrayed small holes. Specifically, the first sound-absorbing air inlet 511 and the second sound-absorbing air inlet 512 are composed of a plurality of small holes, respectively, which have a sound-absorbing effect and can reduce the noise of the airflow passing through. Further, the total area of all the small holes of the first sound-absorbing air inlet 511 is greater than the total area of all the small holes of the second sound-absorbing air inlet 512, so that the air inlet amount of the first sound-absorbing air inlet 511 is greater than that of the second sound-absorbing air inlet 512.

[0243] In one embodiment, as shown in FIGS. 47 and 48, the bottom cover 51 is provided with a sound-absorbing hole plate 58 covering the air inlet, and the sound-absorbing hole plate 58 is provided with a plurality of sound-absorbing small holes having a noise reduction effect.

[0244] Specifically, the sound-absorbing hole plate 58 is arranged between the top surface of the bottom cover 51 and the first exhaust sound-absorbing cotton 571, and the airflow enters the air inlet of the bottom cover 51 through the sound-absorbing small holes on the sound-absorbing hole plate 58, which can preliminarily reduce the noise of the airflow.

[0245] Further, a gap is left between the sound-absorbing hole plate 58 and the bottom cover 51, and the sound-absorbing hole plate 58 is arranged to increase the air flow speed. Specifically, a gap is left between the sound-absorbing hole plate 58 and the top plate 513 of the bottom cover 51.

[0246] The sound-absorbing hole plate 58 can support the first exhaust sound-absorbing cotton 571. The first exhaust sound-absorbing cotton 571, the sound-absorbing hole plate 58, and the top plate 513 of the bottom cover 51 are arranged to increase the diameter of the passing air flow and lengthen the path, thereby achieving the sound-absorbing effect.

[0247] In some embodiments, the compressor 35 of the oxygen generating device 100 is connected above the exhaust sound-absorbing device, and the outer cover of the compressor 35 is provided with a compressor cover 38, and the exhaust sound-absorbing device is connected to the bottom of the compressor cover 38.

[0248] In detail, the bottom of the compressor cover 38 is provided with an opening, and the edge of the bottom of the compressor cover 38 is fixedly connected to the bottom cover 51 or the bottom shell 52 of the exhaust sound-absorbing device. The exhaust sound-absorbing device and the compressor cover 38 form a compressor cavity 30, and the compressor 35 is located in the compressor cavity 30, thereby reducing the noise transmission. The exhaust sound-absorbing device can be used as a mounting seat of the compressor 35.

[0249] In some embodiments, a third air duct 43 is formed in the compressor cover 38, that is, in the compressor cavity 30. The air flow in the third air duct 43 can take away the heat of the compressor 35, thereby preventing the compressor 35 from overheating. The sound-absorbing air inlet 510 of the exhaust sound-absorbing device is in communication with the third air duct 43, and the air flow in the third air duct 43 can enter the exhaust sound-absorbing device through the sound-absorbing air inlet 510, pass through the sound-absorbing air outlet 522 of the exhaust sound-absorbing device, and be discharged after being sound-absorbed and noise-reduced.

[0250] In some embodiments of the present application, the oxygen generating device 100 is provided with a sound-absorbing structure.

[0251] As shown in FIGS. 52 to 57, the sound-absorbing structure includes an air inlet sound-absorbing device 80 and a nitrogen sound-absorbing device 70. The air inlet sound-absorbing device 80 is used to sound-absorb and noise-reduce the air entering the compressor 35, and the nitrogen sound-absorbing device 70 is used to sound-absorb and noise-reduce the nitrogen discharged by the oxygen generating device 100. The air inlet sound-absorbing device 80 and the nitrogen sound-absorbing device 70 are arranged in the compressor cavity 30.

[0252] One side of the compressor 35 is connected with a second air inlet pipe 39, the air inlet sound-absorbing device 80 is arranged on the side of the compressor 35 connected with the second air inlet pipe 39, and the nitrogen sound-absorbing device 70 is arranged on the other side of the compressor 35. The second air inlet pipe 39 is connected with the air inlet of the compressor and conveys air into the compressor.

[0253] The bottom of the air intake muffling device 80 is formed with a recess 83 for avoiding the second air intake pipe 39, and an air intake port 81 and an air outlet port 82 are arranged in the air intake muffling device 80. The air outlet port 82 is arranged in the recess 83 and connected to the second air intake pipe 39.

[0254] The air flow enters the air intake muffling device 80 through the air intake port 81, and enters the compressor 35 through the second air intake pipe 39 after being subjected to the muffling treatment.

[0255] The nitrogen muffling device 70 is formed with a nitrogen muffling cavity, and is provided with a nitrogen intake port 71 and a nitrogen outlet port 72 connected to the nitrogen muffling cavity. The nitrogen intake port 71 is used to connect the nitrogen pipeline of the oxygen production equipment, and the nitrogen separated by the oxygen production equipment enters the nitrogen muffling device 70 through the nitrogen intake port 71, and is discharged into the compressor cavity 30 through the nitrogen outlet port 72 after being subjected to the muffling treatment. Further, the opening area of the nitrogen intake port 71 is smaller than that of the nitrogen outlet port 72, so as to avoid the occurrence of whistling sound.

[0256] The air intake muffling device 80 and the nitrogen muffling device 70 are arranged on opposite sides of the compressor 35 respectively, and the structure is compact, and the space in the compressor cavity 30 is reasonably utilized. In the limited internal space of the compressor cavity 30, the volume of the air intake muffling device 80 and the nitrogen muffling device 70 can be increased, so as to improve the muffling effect.

[0257] The air intake muffling device 80 avoids the second air intake pipe 39 through the recess 83, and can better adapt to the shape of the compressor 35, compactly cooperate with the compressor 35, increase the volume of the air intake muffling device 80, and improve the muffling effect. The recess 83 makes the air intake muffling cavity form a bent air flow channel, can change the flow direction of the air flow in the air intake muffling cavity, make the path of the air flow more tortuous, consume more energy, and thus effectively reduce the noise of the air flow. The air outlet port 82 is arranged on the side wall of the recess 83, can be directly connected to the second air intake pipe 39 extending into the recess 83, is beneficial to reducing the length of the pipeline, makes the structure more reasonable, and also can reduce the cost.

[0258] In detail, the compressor 35 selects an oil-free air compressor, has two groups of cylinder assemblies, and the second air intake pipe 39 is a three-way pipe, which can respectively deliver air to the two groups of cylinder assemblies. The air outlet port 82 can be arranged on the side wall of the recess 83 away from the air intake port 81, so as to better lengthen the path of the air flow.

[0259] Further, in order to facilitate connection, the air intake port 81, the air outlet port 82 and the nitrogen intake port 71 can be arranged in a pipe joint structure, which is convenient for connecting the pipeline.

[0260] In some embodiments, sound-absorbing materials are arranged in the air intake silencing cavity of the air intake silencing device 80 and / or the nitrogen gas silencing cavity of the nitrogen gas silencing device 70, which can absorb the sound of the air flow and improve the silencing effect. The sound-absorbing materials can be porous sound-absorbing materials such as inorganic fibers, organic fibers, inorganic foams, foamed plastics, or other existing sound-absorbing materials.

[0261] In detail, as shown in FIG. 52, the sound-absorbing materials include air intake silencing sound-absorbing cotton 84 arranged in the air intake silencing cavity, which is used to absorb the sound of the air flow in the air intake silencing cavity. The sound-absorbing materials also include nitrogen gas silencing sound-absorbing cotton 74 arranged in the nitrogen gas silencing cavity, which is used to absorb the sound of the nitrogen gas flow in the nitrogen gas silencing cavity.

[0262] In some embodiments, as shown in FIGS. 52 and 57, at least one air intake silencing baffle 85 is arranged in the air intake silencing cavity of the air intake silencing device 80, which divides the air intake silencing cavity into multiple communicating silencing chambers. After entering the air intake port 81, the air flow passes through the multiple communicating silencing chambers and then enters the second air inlet pipe 39 of the compressor 35 from the air outlet port 82. The air intake silencing baffle 85 can affect the path of the air flow and improve the silencing effect on the air flow.

[0263] In some embodiments, as shown in FIG. 54, at least one nitrogen gas silencing baffle 75 is arranged in the nitrogen gas silencing cavity, which divides the nitrogen gas silencing cavity into at least two communicating silencing chambers. After entering the nitrogen gas intake port 71, the nitrogen gas flow passes through the multiple communicating silencing chambers and then is discharged from the nitrogen gas outlet port 72. The nitrogen gas silencing baffle 75 can affect the path of the air flow and improve the silencing effect on the air flow.

[0264] In some embodiments, the bottom of the nitrogen gas silencing device 70 is provided with a perforated plate 73, and the nitrogen gas outlet port 72 is provided with multiple nitrogen gas outlet ports, which are distributed on the perforated plate 73. The opening area of the nitrogen gas intake port 71 can be smaller than the total opening area of the multiple nitrogen gas outlet ports 72. The multiple nitrogen gas outlet ports 72 can further play a silencing effect on the air flow.

[0265] In some embodiments, the oxygen generating device 100 is provided with a compressor cover 38, and the silencing structure is arranged in the inner cavity of the compressor cover 38.

[0266] As shown in FIGS. 53 and 54, the inner cavity of the compressor cover 38 is the compressor cavity 30, and the compressor cover 38 includes a cover top plate 381 and multiple cover side plates 382 surrounding the compressor cavity 30.

[0267] Further, the bottom of the compressor cover 38 is connected with an exhaust muffling device, and the compressor 35 is connected with the exhaust muffling device. A damping device, such as a damping spring, a bumper, etc., can be arranged on the exhaust muffling device, and the damping device is connected between the compressor 35 and the exhaust muffling device, so as to buffer the vibration of the compressor 35, thereby reducing the noise generated by the vibration.

[0268] In some embodiments, the air inlet muffling device 80 is fixedly connected with the cover top plate 381 of the compressor cover 38, and the air inlet 81 of the air inlet muffling device 80 forms a first pipe joint extending out of the cover top plate 381, so as to facilitate the connection of the air pipe.

[0269] In some embodiments, the nitrogen inlet muffling device 70 is fixedly connected with the cover top plate 381 of the compressor cover 38, and the nitrogen inlet 71 of the nitrogen inlet muffling device 70 forms a second pipe joint extending out of the cover top plate 381, so as to facilitate the connection of the nitrogen pipe.

[0270] The air inlet muffling device 80 and / or the nitrogen inlet muffling device 70 can be connected with the cover top plate 381 by fasteners or other detachable manners.

[0271] The air inlet muffling device 80 and / or the nitrogen inlet muffling device 70 are configured in a flat shape extending towards the opposite ends of the compressor 35, so as to be adapted to the shape of the compressor cover 38, and the internal structure of the compressor cover 38 is more compact.

[0272] In some embodiments, as shown in FIG. 52, the compressor cover 38 and the exhaust muffling device enclose a third air duct 43, and the compressor cover 38 is provided with a third air inlet 331 communicating with the third air duct 43, and the heat dissipation airflow enters the third air duct 43 from the third air inlet 331, and then is discharged through the exhaust muffling device.

[0273] In an embodiment, the third air duct 43 communicates with the device cavity 20 above through the third air inlet 331, and the airflow in the device cavity 20 can enter the third air duct 43 through the third air inlet 331 to dissipate heat for the compressor 35. In detail, the fan 25 is arranged in the device cavity 20, and the fan 25 sends the airflow in the device cavity 20 into the third air duct 43.

[0274] Specifically, the third air inlet 331 is arranged on the cover top plate 381 of the compressor cover 38 and located between the air inlet muffling device 80 and the nitrogen inlet muffling device 70, and the third air inlet 331 faces the compressor 35. The air inlet muffling device 80 and the nitrogen inlet muffling device 70 are arranged on the opposite sides of the compressor 35, so as to reduce the obstruction to the heat dissipation airflow, and the heat dissipation airflow can directly flow to the compressor 35 in the middle from the third air inlet 331, so as to sufficiently dissipate heat for the compressor 35 and ensure the heat dissipation efficiency.

[0275] The nitrogen exhaust muffler 70 directly discharges nitrogen into the third air duct 43, and the nitrogen can be discharged together with the exhaust air flow through the exhaust air muffling channel of the exhaust muffler.

[0276] In some embodiments, as shown in FIG. 52, the compressor cover 38 and / or the exhaust muffler is provided with a sound-absorbing layer, which can play a sound-absorbing role to reduce the noise transmission from the compressor cavity 30. The sound-absorbing layer can be made of sound-absorbing cotton, sound-absorbing foam or other sound-absorbing material layer.

[0277] In detail, the inner wall of the compressor cover 38 is provided with a cover sound-absorbing layer 384, which is distributed on the cover top plate 381 and the plurality of cover side plates 382 of the compressor cover 38. The top of the exhaust muffler is provided with a first exhaust sound-absorbing cotton 571, and the cover sound-absorbing layer 384 and the first exhaust sound-absorbing cotton 571 surround the compressor cavity 30.

[0278] In some embodiments, the oxygen generating device 100 is provided with an air inlet pipeline connected with the air inlet port 81 of the air inlet muffler 80 in the compressor cover 38, to deliver air to the air inlet muffler 80.

[0279] In some embodiments, the inside of the shell 10 is provided with a molecular sieve device located at one side of the device cavity 20 and the compressor cavity 30. The compressed air delivered by the compressor 35 enters the molecular sieve device, which separates oxygen and nitrogen in the air. The compressor 35 can be connected with the molecular sieve device through the heat dissipation pipe 351 in the device cavity 20, to deliver compressed air to the molecular sieve device through the heat dissipation pipe 351.

[0280] Further, the oxygen generating device 100 is provided with an output pipeline for outputting oxygen, through which the oxygen separated by the molecular sieve device is output. The nitrogen separated by the molecular sieve device is discharged through a nitrogen pipeline connected with the nitrogen inlet port 71 of the nitrogen exhaust muffler 70, to deliver nitrogen into the nitrogen exhaust muffler 70.

[0281] In detail, the oxygen generating device 100 is provided with a first air inlet pipe 37 connected with the air inlet port 81 of the air inlet muffler 80. The air inlet module of the oxygen generating device 100 can deliver air to the air inlet muffler 80 through the first air inlet pipe 37.

[0282] For the noise of the compressor cavity 30, the air inlet muffler 80 reduces the noise of the air inlet flow of the compressor 35, the nitrogen exhaust muffler 70 reduces the noise of the nitrogen flow discharged by the molecular sieve device, the compressor cover 38 reduces the noise transmission, and the exhaust muffler overall muffles the discharged heat dissipation air flow and nitrogen, effectively reducing the noise of the oxygen generating device, and providing a quiet oxygen using environment for the user when the oxygen generating device is working.

[0283] In some embodiments of the present application, the oxygen generating device 100 comprises a waterless humidification module 60.

[0284] Referring to FIGS. 58-65, the waterless humidification module 60 uses the moisture in the air to humidify the oxygen output by the oxygen generating device 100; at the same time, the incoming oxygen generating gas can be dehumidified, and part of the moisture in the oxygen generating gas enters the oxygen, achieving humidification of the oxygen and dehumidification of the oxygen generating gas.

[0285] The present application will be described in detail by the following embodiments.

[0286] In one embodiment of the present application, referring to FIGS. 58-62 and 65, the waterless humidification module 60 comprises a shell 61, an air inlet pipe 62, an air outlet pipe 63, and a humidification pipe 64, the shell 61 is provided with an inlet chamber 611 and an outlet chamber 612,

[0287] The air inlet pipe 62 and the air outlet pipe 63 are respectively arranged on the inlet chamber 611 and the outlet chamber 612, and the air inlet pipe 62 and the air outlet pipe 63 are located at the same end of the shell 61. In a conventional waterless humidification module, the compressor gas circuit and the oxygen gas circuit adopt a bidirectional symmetrical structure, and when the pipe is connected, both ends need to be connected separately, which causes complexity in space arrangement and inconvenience in pipe connection. In the present application, the air inlet pipe 62 and the air outlet pipe 63 are arranged on the same side of the shell 61, which is conducive to the rapid connection of the air inlet pipe 62 and the air outlet pipe 63 with the compressor inlet pipe, reduces the internal space occupation, and further makes the structure more compact and simple.

[0288] In this embodiment, at least a part of the humidification pipe 64 passes through the inlet chamber 611, that is, at least a part of the humidification pipe 64 is located in the inlet chamber 611, and all or part of the pipe wall of the humidification pipe 64 located in the inlet chamber is a water-permeable structure. The water-permeable pipe wall allows moisture to enter the inside through the pipe wall, achieving humidification of the oxygen in the humidification pipe 64. At the same time, the air inlet pipe 62 is used to introduce external air into the inlet chamber 611, and part of the moisture in the air penetrates into the humidification pipe 64, so that the oxygen in the humidification pipe 64 is humidified. The air outlet pipe 63 is used to output the dehumidified gas in the outlet chamber 612. The moisture in the external air entering from the air inlet pipe 62 penetrates into the humidification pipe 64 to increase the humidity of the oxygen; at the same time, the gas in the inlet chamber 611 is dehumidified, which is beneficial to reduce the moisture entering the oxygen generating system and avoid the corrosion of the moisture to the flowing components.

[0289] In the embodiment, in order to realize that the air inlet pipe 62 and the air outlet pipe 63 are located at the same end of the shell 61, a partition plate 613 for spacing the air inlet chamber 611 and the air outlet chamber 612 is arranged in the shell 61, a through hole 614 for connecting the air inlet chamber 611 and the air outlet chamber 612 is arranged on the partition plate 613, and the air inlet pipe 62 and the air outlet pipe 63 are located at the same side of the through hole 614; by arranging the partition plate 613, the direction change of the gas after passing through the through hole 614 is realized, that is, the air inlet pipe 62 and the air outlet pipe 63 are located at the same end of the shell 61.

[0290] In some embodiments, the cross-sectional area of the air inlet chamber 611 is greater than the cross-sectional area of the air outlet chamber 612. The air inlet chamber 611 realizes the dehumidification of the gas and the humidification of the oxygen in the humidification pipeline 64; the air inlet chamber 611 and the air outlet chamber 612 are mainly used for transporting the gas to the air outlet pipe 63; the flow direction of the gas in the air inlet chamber 611 is opposite to the flow direction of the gas in the air outlet chamber 612, so that the gas flows in the air inlet chamber 611 away from the air inlet pipe 62 to increase the contact area and the contact time with the humidification pipeline 64, so as to achieve a better humidification oxygen effect; then the gas enters the air outlet chamber 612 through the through hole 614, and the gas flows towards the air outlet pipe 63. The gas in the air inlet chamber 611 refers to the gas entering from the air inlet pipe 62.

[0291] In some embodiments, the air outlet chamber 612 is filled with sound-absorbing cotton and / or filter cotton to realize the sound-absorbing and filtering of the gas, and the water-permeable structure can be a fiber membrane, and the water can permeate through the fiber membrane.

[0292] In some embodiments, the flow direction of the gas in the air inlet chamber 611 is opposite to the flow direction of the oxygen in the humidification pipeline 64, so that more water can enter the inside through the pipe wall of the humidification pipeline 64.

[0293] In some embodiments, the air inlet pipe 62 and the air outlet pipe 63 are coaxially arranged, and the air inlet pipe 62 and the air outlet pipe 63 are located at the side of the shell 61. The shell air inlet 6191 is arranged at the connection between the air inlet pipe 62 and the air inlet chamber 611, and the shell air outlet 6192 is arranged at the connection between the air outlet pipe 63 and the air outlet chamber 612.

[0294] In some embodiments, a shell air inlet 6191 is formed on the shell wall 619 of the shell 61 and connected with the air inlet pipe 62. The shell air inlet 6191 is arranged in parallel with the axis of the air inlet pipe 62, and the axial dimension of the shell air inlet 6191 is the same as the internal height of the air inlet chamber 611. The gas delivered by the air inlet pipe 62 can enter the air inlet chamber 611 through the shell air inlet 6191, fill the internal space of the air inlet chamber 611 in height, and then flow in the internal space of the air inlet chamber 611. This is beneficial to increase the contact area between the gas and the humidification pipeline 64. Preferably, the through hole 614 and the air inlet pipe 62 are located at two ends of the shell 61. The shell air inlet 6191 is arranged in parallel with the axis of the air inlet pipe 62, and the axial dimension of the shell air inlet 6191 is the same as the internal height of the air inlet chamber 611. The gas delivered by the air inlet pipe 62 can enter the air inlet chamber 611 through the shell air inlet 6191, fill the internal space of the air inlet chamber 611 in height, and then flow in the internal space of the air inlet chamber 611. This is beneficial to increase the contact area between the gas and the humidification pipeline 64.

[0295] In some embodiments, the shell air outlet 6192 is arranged in parallel with the axis of the air outlet pipe 63, and a downward convex groove 6181 is arranged on the bottom wall 618 of the shell 61. The convex groove 6181 is in communication with the shell air outlet 6192 and is connected with the air outlet connection part. By arranging the convex groove 6181, the opening area between the air outlet pipe 63 and the air outlet chamber 612 is increased, and the gas in the air outlet chamber 612 can be discharged in time.

[0296] In some embodiments, the air inlet pipe 62 and the air outlet pipe 63 are integrally arranged, the partition plate 613 extends outward to form a partition plate convex 6131 for spacing the air inlet pipe 62 and the air outlet pipe 63, and the air inlet pipe 62 and the air outlet pipe 63 are coaxially arranged. By integrally arranging the air inlet pipe 62 and the air outlet pipe 63, the structural strength is increased, and the manufacturing difficulty is reduced. Preferably, the shell 61, the air inlet pipe 62, and the air outlet pipe 63 are integrally injection molded.

[0297] In some embodiments, the air inlet chamber 611 is provided with a plurality of porous plates 615 at two ends. The porous plates 615 are provided with a plurality of regularly arranged holes, and the humidification pipelines 64 are arranged in the holes. By arranging the porous plates 615, the humidification pipelines 64 are supported.

[0298] In some embodiments, the gas inlet chamber 611 is provided with a gas inlet cavity 616 and a gas outlet cavity 617 at two ends respectively, a porous plate 615 is arranged between the gas inlet cavity 616 and the gas inlet chamber 611, and a porous plate 615 is arranged between the gas outlet cavity 617 and the gas inlet chamber 611. The gas inlet cavity 616 and the gas outlet cavity 617 are provided with a gas inlet nozzle 6161 and a gas outlet nozzle 6171 respectively. The gas inlet cavity 616 and the gas outlet cavity 617 are part of the humidification pipeline 64. Oxygen enters the gas inlet cavity 616 through the gas inlet nozzle 6161, then passes through the water-permeable structure in the gas inlet chamber 611, and reaches the gas outlet cavity 617. The humidification of oxygen is realized in the gas inlet chamber 611.

[0299] In another embodiment of the present application, referring to FIGS. 63 and 64, the main difference between the waterless humidification module 60 and the above-mentioned embodiment is the different structure of the gas inlet cavity. The other structures can be the same as those of the above-mentioned embodiment.

[0300] In this embodiment, the waterless humidification module 60 comprises a shell 61, an air inlet pipe 62, an air outlet pipe 63, and a humidification pipeline. The shell 61 is provided with a gas inlet chamber 611 and a gas outlet chamber 612. The air inlet pipe 62 and the air outlet pipe 63 are arranged on the gas inlet chamber 611 and the gas outlet chamber 612 respectively, and are located at the same end of the shell 61. The conventional waterless humidification module adopts a bidirectional symmetrical structure for the compressor air pipeline and the oxygen pipeline. When the pipeline is connected, both ends need to be connected separately, which causes complexity in space arrangement and inconvenience in pipeline connection. In the present application, the air inlet pipe 62 and the air outlet pipe 63 are arranged on the same side of the shell 61, which is conducive to the rapid connection of the air inlet pipe 62 and the air outlet pipe 63 with the compressor air pipeline, reduces the internal space occupation, and makes the structure more compact and simple.

[0301] In this embodiment, at least a part of the humidification pipeline passes through the gas inlet chamber 611, and all or part of the pipe wall of the humidification pipeline located in the gas inlet chamber is a water-permeable structure. The water-permeable pipe wall allows water to enter the inside through the pipe wall, thereby humidifying the oxygen in the humidification pipeline 64. At the same time, the air inlet pipe 62 is used to introduce external air into the gas inlet chamber 611. Part of the water in the air permeates into the humidification pipeline, so that the oxygen in the humidification pipeline is humidified.

[0302] In some embodiments, the shell 61 is provided with a gas inlet cavity 616 and a gas outlet cavity 617, and the gas inlet cavity 616 and the gas outlet cavity 617 are provided with a gas inlet nozzle 6161 and a gas outlet nozzle 6171 respectively. The gas inlet cavity 616 and the gas outlet cavity 617 are part of the humidification pipeline 64. Oxygen enters the gas inlet cavity 616 through the gas inlet nozzle 6161, then passes through the water-permeable structure in the gas inlet chamber 611, and reaches the gas outlet cavity 617. The humidification of oxygen is realized in the gas inlet chamber 611.

[0303] In some embodiments, in order to realize the air inlet nozzle 6161 and the air outlet nozzle 6171, facilitate the connection to the oxygen supply pipeline, and reduce the occupation of the internal space of the oxygen generator, the air inlet nozzle 6161 and the air outlet nozzle 6171 are preferably arranged at the same end of the shell 61, the air inlet nozzle 6161 and the air outlet nozzle 6171 are arranged at one end of the shell 61, and the air inlet pipe 62 and the air outlet pipe 63 are arranged at the other end of the shell 61, facilitating the quick connection of the oxygen supply pipeline and the oxygen supply pipeline.

[0304] In some embodiments, the air inlet cavity 616 extends to the upper side of the air inlet chamber 611, and the air inlet nozzle 6161 is arranged close to the air inlet pipe 62.

[0305] In some embodiments, the air outlet cavity 617 extends to the upper side of the air inlet chamber 611, and the air outlet nozzle 6171 is arranged away from the air inlet pipe 62.

[0306] The waterless humidification module 60 of the oxygen generator 100 permeates the moisture in the external air into the oxygen to improve the humidity of the oxygen, and simultaneously realizes the dehumidification of the external air.

[0307] The oxygen generator 100 has an output pipeline for outputting oxygen and the above-mentioned waterless humidification module 60, and the humidification pipeline 64 is connected to the oxygen output pipeline for humidifying the output oxygen. The oxygen generator 100 is provided with an oxygen generation air inlet pipeline, and the air inlet pipe 62 and the air outlet pipe 63 are connected to the oxygen generation air inlet pipeline. The air outlet pipe 63 is communicated with the air inlet of the compressor 35 to deliver the dehumidified gas to the compressor 35 for compression treatment. Preferably, the waterless humidification module 60 is independently arranged.

[0308] In some embodiments of the present application, the waterless humidification module 60 is arranged below the air inlet module and outside the device cavity 20 to form an independent separated area and is separated from the device cavity 20. Alternatively, an independent separated area is formed outside the device cavity 20, the independent separated area and the device cavity 20 are separated from each other, and the waterless humidification module 60 is arranged in the independent separated area.

[0309] In some embodiments of the present application, the oxygen generation air inlet pipeline of the oxygen generator 100 includes a first air inlet pipe 37, and the air inlet pipe 62 and the air outlet pipe 63 are connected to the first air inlet pipe 37. The air passing through the waterless humidification module 60 enters the air inlet silencer 80 through the first air inlet pipe 37, and the air inlet silencer 80 sends the air into the compressor 35 through the second air inlet pipe 39.

[0310] The oxygen generating device 100 of the present application introduces ambient air through the air inlet module; a part of the air introduced by the air inlet module is compressed by the compressor 35 after passing through the waterless humidification module 60 and the air inlet silencer 80; another part of the air introduced by the air inlet module is used as a cooling air flow, enters the cooling air duct 40 to cool the device cavity 20, and then enters the compressor cavity 30 to continue to cool the compressor 35; the cooling air flow enters the exhaust silencer at the bottom of the compressor cavity 30, and is discharged out of the oxygen generating device 100 after noise reduction by the exhaust silencer, thereby providing a quiet oxygen environment for the user.

[0311] In summary, the present application has the following characteristics in terms of structural arrangement:

[0312] The oxygen generating device 100 is arranged according to the functional modules, with the molecular sieve device and the gas storage tank on one side, and the upper, middle and lower three-layer structure on the other side; the upper layer structure is arranged with relatively precise electronic control unit components for placing corresponding sensing units; the middle layer structure is arranged with corresponding switching valves, fans and electronic control boards (second circuit boards) for placing weak current structural components; the bottom layer structure is arranged with compressors for placing strong current structural components; in addition, considering the particularity of the waterless humidification module, a separate area is further divided to form dry and wet separation; through the above reasonable arrangement, the safety performance indicators of the oxygen generating device 100 are improved in multiple aspects.

[0313] In combination with the above structural arrangement, the cooling air path of the oxygen generating device 100 is further optimized; considering that the heat generated by different power electronic components is different, the corresponding matching is performed according to the flow rate provided by the oxygen generator; if high flow rate is required, corresponding high-power components need to be matched; at this time, the heat generated by the relatively precise electronic control unit components in the upper layer needs to be considered, so the air inlet is arranged to first pass through the upper layer structure, then enter the middle layer structure, and then enter the bottom layer structure; if the power of the matched components is low, the heat generated by the relatively precise electronic control unit components in the upper layer can be ignored, so the air inlet is arranged to first blow directly on the electronic control board (second circuit board) and then split into the bottom layer structure and the upper layer structure to form a cooling path.

[0314] In combination with the above structural arrangement, the silencing method of the whole machine is further optimized; the waterless humidification module is used to realize the intake silencing of part of the compressor and the water removal of the compressor intake, and integrated silencing treatment is performed in the compressor cavity, including the intake and exhaust silencing modules and the bottom silencing and cooling exhaust module, thereby realizing multi-stage silencing of the device and providing a good oxygen inhalation environment for the user.

[0315] In combination with the above structure layout, the air inlet filtering mode is further optimized and designed, the air inlet module for air inlet to the heat dissipation air duct and air supply to the compressor adopts an integrated design mode, which not only has an external structure that is beautiful, but also realizes multi-stage integrated processing of the gas, and in combination with the partial filtering effect of the waterless humidification module, multi-stage filtering of the whole machine is realized, the clean air inlet of the compressor is ensured, and the oxygen purity quality is provided.

[0316] Embodiments of the application have been described above, the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles, practical applications, or technical improvements in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein. The scope of the application is defined by the appended claims.

Claims

1. An oxygen generating apparatus, characterized by comprising: The device comprises: a housing comprising a first side wall and a second side wall; a device cavity provided in the housing and provided with a second side plate adjacent to the second side wall; a compressor cavity provided in the housing and internally provided with a compressor, which is located below the device cavity and communicates with the device cavity; an air inlet module provided on the first side wall, which is used for entering cooling air into the housing and for supplying air to the compressor; a cooling air duct comprising a first air inlet provided on the air inlet module and used for entering cooling air, a first air duct connected with the first air inlet and located between a top wall of the housing and a top plate of the device cavity, a second air duct connected with the first air duct and located between the second side wall and the second side plate, and a second air inlet opened on the second side plate and used for the cooling air in the second air duct to enter the device cavity; an exhaust silencer provided at the bottom of the compressor cavity and internally forming an exhaust silencer cavity, which is provided at the top with a silencer air inlet communicating the compressor cavity and the exhaust silencer cavity, and is provided at the bottom with a silencer air outlet used for exhausting the air in the exhaust silencer cavity out of the oxygen generating device.

2. The oxygen generating device according to claim 1, wherein the air inlet module comprises: an air inlet cavity recessed in the housing; a mounting cavity recessed in a cavity wall opposite to an open end of the air inlet cavity; a filter cavity detachably located in the mounting cavity; an air inlet pipe head communicating with the compressor air inlet and extending into the mounting cavity; the air inlet pipe head is provided in connection with the filter cavity, a first filter is provided in the air inlet cavity, and a second filter is provided in the filter cavity; the first air inlet is provided at the bottom of the air inlet cavity; external air enters the air inlet cavity and passes through the first filter, then part of the air flows into the filter cavity, enters the oxygen supply pipeline after passing through the second filter, and the other part of the air enters the first air inlet and enters the cooling air duct.

3. The oxygen generating device according to claim 2, wherein the air inlet module further comprises an air inlet cover detachably provided at the open end of the air inlet cavity, and a first air inlet for introducing external air is formed between the air inlet cover and the cavity wall of the air inlet cavity; the projection of the first air inlet at the bottom of the air inlet cavity is spaced apart from the filter cavity and the first air inlet, forming a hidden air inlet structure.

4. The oxygen generating device according to claim 1, wherein a first circuit board is provided in the first air duct, and the first circuit board is fixedly provided on the top plate of the device cavity; the plane where the top plate of the device cavity is located is lower than the first air inlet; a second circuit board is provided in the device cavity, and the heat dissipation amount of a plurality of first components provided on the first circuit board is less than the heat dissipation amount of a plurality of second components provided on the second circuit board. A panel frame is arranged between the top plate and the second side wall of the shell and is inclined upward away from the second side wall; the panel frame guides the airflow.

5. The oxygen generating device according to claim 1, wherein, The interior of the shell is provided with a molecular sieve device, which is located at one side of the device cavity and the compressor cavity; the device cavity is provided with a heat dissipation pipe connected with the compressor and used for conveying compressed gas to the molecular sieve device, and the heat dissipation pipe is arranged on the inner side of the second air inlet.

6. The oxygen generating device according to claim 1, wherein, The exhaust silencer comprises: a bottom cover, the top of which forms a silencing air inlet; a bottom shell, which forms a sunken bottom shell groove, one end of which forms the silencing air outlet; an exhaust cover arranged in the bottom shell groove, one end of which extends to the silencing air outlet, and the other end of which forms a hollow hole; wherein the bottom cover is connected to the bottom shell and covers the bottom shell groove, the first exhaust silencing cavity is formed between the outer side of the exhaust cover and the bottom cover and communicates with the silencing air inlet, and the second exhaust silencing cavity is formed between the inner side of the exhaust cover and the bottom shell and communicates with the silencing air outlet.

7. The oxygen generating device according to claim 6, wherein, the silencing air inlet comprises a first silencing air inlet and a second silencing air inlet close to the opposite ends of the bottom cover respectively, the first silencing air inlet is close to the silencing air outlet of the bottom shell, and the second silencing air inlet is close to the hollow hole of the exhaust cover; the opening area of the first silencing air inlet is greater than that of the second silencing air inlet; and / or the hollow hole is distributed on the top surface and the side surface of the exhaust cover, the side surface of the exhaust cover and the side wall of the bottom shell groove form a slot inner gap, and the slot inner gap communicates with the first exhaust silencing cavity; and / or the inside of the first exhaust silencing cavity and / or the inside of the second exhaust silencing cavity and / or the top surface of the bottom cover are provided with exhaust sound-absorbing cotton.

8. The oxygen manufacturing apparatus according to claim 1, characterized by The interior of the shell is further provided with a waterless humidification module, which comprises: a shell, which is provided with an air inlet chamber and an air outlet chamber; an air inlet pipe and an air outlet pipe arranged on the air inlet chamber and the air outlet chamber respectively and located at the same end of the shell; a humidification pipeline, at least a part of which passes through the air inlet chamber, and all or part of the pipe wall of the humidification pipeline located in the air inlet chamber is a water-permeable structure; a partition plate arranged in the shell for separating the air inlet chamber and the air outlet chamber, and the partition plate is provided with a through hole for communicating the air inlet chamber and the air outlet chamber.

9. The oxygen generating device according to claim 8, wherein, the waterless humidification module is located below the air inlet module and forms an independent separated area outside the device cavity; the air inlet pipe and the air outlet pipe communicate with the oxygen generating device air inlet pipeline, and the humidification pipeline communicates with the oxygen generating device oxygen delivery pipeline; and / or The air inlet pipe and the air outlet pipe are coaxially arranged at the side of the shell, and the air inlet pipe and the air inlet chamber are communicated, and the air outlet pipe and the air outlet chamber are communicated, and the air inlet pipe and the air outlet pipe are respectively provided with air inlets and air outlets; the through hole and the air inlet pipe are located at the two ends of the shell; and / or, The air outlet chamber is filled with sound-absorbing cotton and / or filter cotton, and the water-permeable structure is a fiber membrane.

10. The oxygen production device according to any one of claims 1 to 9, characterized in that, The compressor cavity is provided with a sound-absorbing assembly, and the sound-absorbing structure comprises: An air inlet sound-absorbing device is arranged at one side of the compressor connected with the second air inlet pipe, and is provided with a recessed groove for avoiding the second air inlet pipe, an air inlet sound-absorbing cavity is formed in the air inlet sound-absorbing device, and an air inlet and an air outlet of the air inlet sound-absorbing cavity are arranged, the air outlet is arranged in the recessed groove and connected with the second air inlet pipe; A nitrogen sound-absorbing device is arranged at the other side of the compressor, a nitrogen sound-absorbing cavity is formed in the nitrogen sound-absorbing device, and a nitrogen inlet and a nitrogen outlet of the nitrogen sound-absorbing cavity are arranged.

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