Gas circuit structure for gas taking of compressor of portable oxygen generator

Abstract

The gas circuit structure comprises a cover body, a fan, a base and a filtering assembly, an opening is formed in the top of the cover body, a gas pipe is arranged on the side wall of the cover body, an air outlet of the fan is communicated with the interior of the cover body, one end of the gas pipe is communicated with the air outlet of the fan, and the other end of the gas pipe is communicated with the base. A containing cavity and an air inlet pipe are arranged on the base, an air suction port is formed in the inner bottom of the containing cavity, the cover body is arranged on the base, the other end of the air pipe is communicated with one end of the air inlet pipe, the other end of the air inlet pipe is communicated with the containing cavity, and the filtering assembly is contained in the containing cavity. According to the air path structure, the air suction efficiency of the compressor can be improved, the air taking amount is guaranteed, air taking of the compressor is smoother, noise generated by air suction of the compressor and noise generated by a fan can be effectively overlapped together, noise sources are reduced, the total noise amount can be reduced, in addition, pipeline connection in the oxygen generator can be reduced, and the cost is reduced. And the noise of the whole machine can be effectively reduced while pipelines are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of oxygen generator, especially a kind of air path structure for compressor air taking of portable oxygen generator. BACKGROUND

[0002] Portable oxygen generator is a kind of small device designed for the user needing oxygen therapy, with its portability, ease of use and stability, it provides great convenience for users, especially suitable for users needing long-term oxygen therapy or outdoor activities, can significantly improve the quality of life.

[0003] The compressor of portable oxygen generator on the existing market is basically directly inhaled air from the surrounding environment, not only the air taking amount is difficult to guarantee, but also a part of noise is generated when the air suction port of compressor inhales air, plus the noise generated by the heat dissipation fan in oxygen generator, so as to increase the noise source of oxygen generator working process.

[0004] In addition, the air suction port of the compressor of some portable oxygen generator is connected with pipeline (usually silica gel pipeline), and the free end of the pipeline is arranged at a position on the body of oxygen generator, and this mode has the following shortcomings:

[0005] 1) many connected pipelines, causing the increase of adverse hidden troubles;

[0006] 2) many pipelines result in poor neatness, not enough beautiful;

[0007] 3) pipeline material is mostly silica gel, and the sound attenuation effect is poor;

[0008] 4) more pipelines occupy a large space inside portable oxygen generator, which increases the hindrance for further miniaturization of portable oxygen generator. CONTENT OF UTILITY MODEL

[0009] The utility model aims at overcoming the above-mentioned deficiencies of prior art, and provides an air path structure for compressor air taking of portable oxygen generator.

[0010] According to one aspect of the utility model, an air path structure for compressor air taking of portable oxygen generator is provided, comprising:

[0011] a cover body for covering compressor, the top of cover body is provided with opening, and the sidewall of cover body is provided with air pipe;

[0012] fan, fan is arranged at opening, the air outlet of fan is communicated with the inside of cover body, and one end of air pipe is communicated with the air outlet of fan;

[0013] The base is provided with a containing cavity and an air inlet pipe, the inner bottom of the containing cavity is provided with an air suction port for inserting the air suction pipe on the compressor, the cover body is arranged on the base, the other end of the air pipe is communicated with one end of the air inlet pipe, and the other end of the air inlet pipe is communicated with the containing cavity.

[0014] The filter assembly is accommodated in the containing cavity, and the filter assembly comprises a filter layer, the filter layer comprises a filter cotton layer and a PET sintered filter layer stacked together, the inside and the surface of the PET sintered filter layer are both in a porous structure,

[0015] Under the action of the fan, the airflow can pass through the air pipe, the air inlet pipe, the filter cotton layer and the PET sintered filter layer in sequence and enter the air suction port.

[0016] The air suction pipe on the compressor is connected with the air suction port on the base, when the fan works, part of the airflow blown out of the air outlet of the fan is used for heat dissipation of the compressor in the cover body, and the other part enters the air suction pipe of the compressor through the air pipe on the side wall of the cover body, the air inlet pipe on the base, the filter cotton layer, the PET sintered filter layer and the air suction port, and the air suction efficiency of the compressor can be improved by combining with the suction force of the compressor, the air intake amount of the compressor is ensured, the air intake of the compressor is smoother, the noise generated by the air suction of the compressor can be effectively superimposed with the noise generated by the fan, the noise source is reduced, the total noise volume is reduced, meanwhile, the air path for air intake of the compressor is composed of the air inlet pipe on the base and the air pipe on the cover body, the pipeline connection in the oxygen generator can be reduced, the pipeline can be reduced, the noise of the whole machine can be effectively reduced, the occupied space in the portable oxygen generator can be effectively reduced, the miniaturization of the portable oxygen generator is possible, in addition, the filter cotton layer of the filter layer can perform first air filtration, the PET sintered filter layer of the filter layer can perform second air filtration and noise reduction, so that the air filtration effect and noise reduction are ensured.

[0017] Further, the sealing element is arranged between the air outlet of the fan and the opening, the side of the sealing element is provided with a connecting pipe, one end of the connecting pipe is communicated with one end of the air pipe, the other end of the connecting pipe is communicated with the air outlet of the fan, the top of the cover body is provided with a containing groove, and the connecting pipe is contained in the containing groove.

[0018] Therefore, the sealing element can seal the gap between the air outlet of the fan and the opening on the cover body, the noise generated by the operation of the compressor can be effectively sealed in the cover body, so that the noise of the whole machine can be effectively reduced, the containing groove on the cover body can contain and position the connecting pipe on the sealing element, and it is ensured that the connecting pipe on the sealing element does not easily swing during the air suction process of the compressor.

[0019] Further, the bottom of the one side of the sealing member is provided with an inclined portion, the bottom of the sealing member is provided with two downwardly extending blocking portions, the two blocking portions are respectively located at the two sides of the inclined portion and are respectively connected with the two sides of the inclined portion, and the port of the other end of the connecting pipe is located at the joint position of the inclined portion and one blocking portion.

[0020] Therefore, the structure formed by the inclined portion and the two blocking portions can guide part of the airflow blown by the fan to the compressor in the cover body to blow and cool the compressor, and can also ensure that another part of the airflow blown by the fan blows into the connecting pipe on the side of the sealing member, since the port of the connecting pipe is located at the joint position of the inclined portion and one blocking portion.

[0021] Further, the periphery of the opening is provided with a clamping groove, the periphery of the sealing member is provided with a clamping step matched with the clamping groove, and the clamping step on the sealing member is clamped in the clamping groove on the periphery of the opening.

[0022] Therefore, the sealing member can be stably installed on the periphery of the opening through the clamping cooperation of the clamping step and the clamping groove, thereby ensuring effective sealing of the gap between the outlet of the fan and the opening on the cover body.

[0023] Further, one end of the connecting pipe is provided with a plug-in pipe communicated with the connecting pipe, and the plug-in pipe is plugged into the air pipe.

[0024] Therefore, the sealing member can be quickly connected with the air pipe on the side wall of the cover body through the plug-in pipe to realize the conductive connection of the connecting pipe and the air pipe.

[0025] Further, the filter assembly further comprises a filter plate and a cover body, the middle part of the filter plate is provided with a mounting hole, a filter layer is arranged on the filter plate to cover the mounting hole, the filter plate is accommodated in the accommodating cavity and the filter layer covers the air inlet, and the cover body covers the opening of the accommodating cavity to cover the accommodating cavity.

[0026] Therefore, under the suction of the compressor and the blowing of the fan, part of the airflow blown by the fan enters the accommodating cavity through the air pipe on the side wall of the cover body and the air inlet on the base, and then the airflow enters the air inlet through the filter cotton layer and the PET sintered filter layer of the filter layer and the mounting hole for the compressor to inhale air. The filter cotton layer and the PET sintered filter layer can filter out dust and impurities in the air, which helps the molecular sieve in the oxygen generator to separate oxygen and nitrogen more effectively, ensures that the finally output oxygen is purer, and reduces the equipment failure rate after filtering out dust and impurities in the air, ensures stable operation of the oxygen generator, and the cover body can prevent the airflow from overflowing.

[0027] Further, the periphery of the filter plate is provided with a ring of protrusions, the filter plate is provided with a through hole communicated with the other end of the air inlet pipe, the periphery of the mounting hole is provided with a ring of bosses, the inner wall of the boss is provided with a ring of clamping grooves, and the periphery of the filter layer is clamped in the clamping grooves.

[0028] Therefore, the filter layer can be firmly installed on the filter plate through the clamping groove to cover the mounting hole, under the suction of the compressor and the blowing of the fan, part of the air flow blown by the fan enters the space enclosed by the cover body and the filter plate through the air pipe on the side wall of the cover body, the air inlet pipe on the base and the through hole on the filter plate, and then enters the air inlet through the filter layer for the compressor to inhale, the design of the filter plate can ensure that all the air passes through the filter layer and then enters the air inlet for the compressor to inhale, thereby ensuring the filtering quality of the air.

[0029] Further, the height of the protrusion is higher than the height of the boss.

[0030] Therefore, such design can ensure that the height of the filter layer is lower than the height of the protrusion, and after the cover body is covered, a gap is ensured between the filter layer and the cover body, so that the air entering from the through hole can flow between the filter layer and the cover body, and under the suction of the compressor and the blowing of the fan, the air can smoothly pass through the filter layer and enter the air inlet for the compressor to inhale.

[0031] Further, the side wall of the accommodating cavity is provided with a notch, the port of the other end of the air inlet pipe is located in the notch, the shape of the periphery of the filter plate is matched with the shape of the side wall of the accommodating cavity, the filter plate is provided with a lug, and the through hole is arranged on the lug.

[0032] Therefore, since the air pipe is arranged on the side wall of the cover body, the notch on the accommodating cavity and the lug on the filter plate can make the air pipe, the air inlet pipe and the through hole be arranged in a straight line and be directly connected in sequence, so that the space inside the oxygen generator can be effectively utilized.

[0033] Further, the sound-absorbing film is arranged on the inner bottom of the accommodating cavity to cover the air inlet, the sound-absorbing film is provided with an air inlet hole, the sound-absorbing film is located between the filter layer and the inner bottom of the accommodating cavity,

[0034] Under the action of the fan, the air flow can enter the air inlet in sequence through the air pipe, the air inlet pipe, the through hole, the filter layer and the air inlet hole on the sound-absorbing film.

[0035] Therefore, the sound-absorbing film can further reduce the noise generated at the air inlet pipe of the compressor, and effectively reduce the noise of the whole machine. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a structural schematic view of a gas path structure for a compressor air inlet of a portable oxygen generator of the utility model;

[0037] Figure 2 It is a structural schematic view of a gas path structure for a compressor air inlet of a portable oxygen generator of the utility model; Figure 1 It is a split structure schematic view of the gas path structure shown in the figure;

[0038] Figure 3 It is a split structure schematic view of the gas path structure shown in the figure; Figure 1A schematic diagram of the gas path structure from another perspective;

[0039] Figure 4 for Figure 3 The diagram shows a breakdown of the gas path structure.

[0040] Figure 5 for Figure 1 A schematic diagram of the disassembled structure of the gas path structure after the compressor is installed;

[0041] Figure 6 for Figure 2 The diagram shows the structure of the seal in the gas path structure.

[0042] Figure 7 for Figure 6 The diagram shows a structural schematic of the seal from another perspective;

[0043] Figure 8 for Figure 6 A schematic diagram of the seal from another perspective;

[0044] Figure 9 for Figure 2 A schematic diagram of the filter plate and filter layer in the air path structure shown;

[0045] Figure 10 for Figure 2 A schematic diagram of the filter plate and filter layer in the air path structure shown from another perspective;

[0046] Figure 11 for Figure 2 A schematic diagram showing the disassembled structure of the filter plate and filter layer in the gas path structure;

[0047] Figure 12 for Figure 2 Another structural schematic diagram of the filter plate and filter layer in the air path structure shown;

[0048] Figure 13 for Figure 12 The diagram shows a cross-sectional view of the filter plate and filter layer along the AA direction. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0050] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. It should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be mechanically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements.

[0051] Referring to Figures 1 to 13 , a kind of compressor gas path structure for portable oxygen generator, including cover 1, fan 2, base 3, filter assembly 4, sealing element 5 and sound-absorbing film 6.

[0052] Referring to Figure 1 And Figure 3 , cover 1 is installed on base 3, cover 1 and base 3 can be fixed by buckle or screw, referring to Figure 5 , cover 1 and base 3 are enclosed in space for installing compressor 7, cover 1 can be covered in the periphery of compressor 7 to protect and sound insulation compressor 7.

[0053] Referring to Figure 1 , Figure 2 And Figure 5 , the top of cover 1 is formed with opening 11 and accommodating groove 13, the side wall of cover 1 is formed with air pipe 12, fan 2 is installed at opening 11, the air outlet of fan 2 is communicated with the inside of cover 1, the top end of air pipe 12 is communicated with the air outlet of fan 2;Specifically: referring to Figure 1 , Figure 2 , Figure 4 And Figure 5 , the air outlet 21 of fan 2 is located at the bottom of fan 2, sealing element 5 is installed between the air outlet 21 of fan 2 and opening 11, the side of sealing element 5 is formed with connecting pipe 51, connecting pipe 51 is clamped and fixed in accommodating groove 13, one end of connecting pipe 51 (the right end of connecting pipe 51 in Figure 2 , the other end of connecting pipe 51 is formed with plug-in pipe 511, plug-in pipe 511 is communicated with connecting pipe 51, plug-in pipe 511 is plugged in the port at the top of air pipe 12, and the other end of connecting pipe 51 is formed with plug-in pipe 511. Figure 2The port of the connecting pipe 51 (the left end of the connecting pipe 51) is located on the inner wall of the sealing member 5, so that the air outlet 21 of the fan 2 can be communicated with the air pipe 12 through the connecting pipe 51 and the plug pipe 511, and the sealing member 5 can seal the gap between the air outlet 21 of the fan 2 and the opening 11 on the cover body 1, so that the noise generated by the compressor during operation can be effectively sealed in the cover body 1, thereby effectively reducing the noise of the whole machine, and the accommodating groove 13 on the cover body 1 can accommodate and position the connecting pipe 51 on the sealing member 5, so that the connecting pipe 51 on the sealing member 5 cannot easily swing during the suction process of the compressor.

[0054] Referring to Figure 2 , the periphery of the opening 11 is formed with a clamping groove 111, referring to Figure 7 and Figure 8 , the periphery of the sealing member 5 is formed with a clamping step 54 matched with the clamping groove 111, the clamping step 54 on the sealing member 5 is clamped in the clamping groove 111 on the periphery of the opening 11, and the sealing member 5 can be stably installed on the periphery of the opening 11 through the clamping cooperation of the clamping step 54 and the clamping groove 111, so as to effectively seal the gap between the air outlet of the fan 2 and the opening 11 on the cover body 1.

[0055] Referring to Figures 6 to 8 , the bottom of one side of the sealing member 5 is formed with an inclined portion 52, the bottom of the sealing member 5 is formed with two downward extending blocking portions 53, the two blocking portions 53 are respectively located on the two sides of the inclined portion 52 and are integrally connected with the two sides of the inclined portion 52, and the port 512 of the connecting pipe 51 is located at the intersection position of the inclined portion 52 and one blocking portion 53, and the structure formed by the inclined portion 52 and the two blocking portions 53 can guide part of the airflow blown by the fan 2 to the compressor in the cover body 1 to blow and cool the compressor, and since the port 512 of the connecting pipe 51 is located at the intersection position of the inclined portion 52 and one blocking portion 53, another part of the airflow blown by the fan 2 can also be blown into the connecting pipe 51.

[0056] The material of the sealing member 5 can be rubber or silicone, which can not only ensure the sealing property, but also effectively seal the noise generated by the compressor during operation in the cover body 1, thereby effectively reducing the noise of the whole machine, and the sealing member 5 can also reduce the noise generated by the fan 2 during operation due to vibration, and the sealing member 5 can be quickly connected with the air pipe 12 on the side wall of the cover body 1 through the plug pipe 511 to realize the conductive connection of the connecting pipe 51 and the air pipe 12.

[0057] Referring to Figure 2 , Figure 4 and Figure 5The base 3 has a concave cavity 31 and an air inlet pipe 32. The bottom of the cavity 31 has an air intake port 311 for connecting to the air intake pipe on the compressor. In this embodiment, there are two air intake ports 311, which are matched with the number of air intake pipes on the compressor. The top of the air intake pipe 32 is inserted into the port at the bottom of the air pipe 12, and the bottom of the air intake pipe 32 is connected to the cavity 31, so that the air pipe 12 and the cavity 31 can be connected.

[0058] Filter assembly 4 is installed in receiving cavity 31, specifically: see Figure 2 , Figure 4 , Figures 9 to 13 The filter assembly 4 includes a filter plate 41, a filter layer 42, and a cover 43. The filter plate 41 has a mounting hole 411 formed in the middle. The filter layer 42 is installed on the filter plate 41 to cover the mounting hole 411. The filter plate 41 is housed in the receiving cavity 31 and the filter layer 42 covers the air intake 311. The cover 43 is fitted onto the opening of the receiving cavity 31 to cover the receiving cavity 31. The cover 43 can be installed at the opening of the receiving cavity 31 by means of snap-fit ​​or screw connection. The cover 43 can prevent airflow from overflowing.

[0059] See Figure 10 and Figure 11 The filter plate 41 has a raised ring 412 around its periphery, and through holes 413 are formed at the corners of the filter plate 41. When the filter plate 41 is housed in the receiving cavity 31, the port of the air inlet pipe 32 is aligned with the port of the through hole 413 on the filter plate 41. The mounting hole 411 has a raised ring 414 around its periphery, and a groove 415 is formed on the inner wall of the raised ring 414. The periphery of the filter layer 42 is engaged in the groove 415 to cover the mounting hole 411. The height of the raised ring 412 is higher than the height of the raised ring 414. The filter layer 42 can be securely mounted on the filter plate 41 through the groove 415 to cover the mounting hole 411. See reference. Figure 2 and Figure 4Under the suction of the compressor and the blowing of the fan 2, part of the airflow blown by the fan 2 enters the space enclosed by the cover body 43 and the filter plate 41 through the air pipe 12 on the side wall of the cover body 1, the air inlet pipe 32 on the base 3 and the through hole 413 on the filter plate 41, and then enters the air suction port 311 through the filter layer 42 for the compressor to suck air. The design of the filter plate 41 can ensure that all the air passes through the filter layer 42 and then enters the air suction port 311 for the compressor to suck air, ensuring the filtering quality of the air. In addition, since the height of the protrusion 412 is higher than the height of the boss 414, the height of the filter layer 42 can be ensured to be lower than the height of the protrusion 412. After the cover body 43 is closed, a gap is left between the filter layer 42 and the cover body 43, so that the air entering from the through hole 413 can flow between the filter layer 42 and the cover body 43. Under the suction of the compressor and the blowing of the fan 2, the air can smoothly pass through the filter layer 42 and enter the air suction port 311 for the compressor to suck air. The filter layer 42 can filter out the dust and impurities in the air, which helps the molecular sieve in the oxygen generator to separate oxygen and nitrogen more effectively, ensures that the output oxygen is purer, and reduces the failure rate of the equipment after filtering out the dust and impurities in the air, ensuring the stable operation of the oxygen generator.

[0060] Referring to Figure 4 In the embodiment, the side wall of the accommodating cavity 31 is shaped with a notch 312, and the port at the bottom of the air inlet pipe 32 is located in the notch 312. The shape of the periphery of the filter plate 41 is adapted to the shape of the side wall of the accommodating cavity 31 to ensure that all the air entering the accommodating cavity 31 can pass through the filter layer 42. Referring to Figures 9 to 12 The filter plate 41 is shaped with a lug 416, which is formed by extending a part of the edge of the filter plate 41 outward. The through hole 413 is arranged on the lug 416, and the protrusion 412 surrounds the periphery of the filter plate 41 and the lug 416. Since the air pipe 12 is arranged on the side wall of the cover body 1, the notch 312 on the accommodating cavity 31 and the lug 416 on the filter plate 41 can make the air pipe 12, the air inlet pipe 32 and the through hole 413 arranged in a straight line and directly connected in sequence, thereby effectively utilizing the space inside the oxygen generator.

[0061] Referring to Figures 11 to 13 The filter layer 42 includes a filter cotton layer 421 and a PET sintered filter layer 422 stacked together. The PET sintered filter layer 422 is formed by sintering PET material. The inside and surface of the PET sintered filter layer 422 are both porous structures. The filter cotton layer 421 can filter the air for the first time, and the PET sintered filter layer 422 with the inside and surface being both porous structures can filter the air for the second time and reduce noise. The PET sintered filter layer 422 is microporous in whole, and the porous structure inside the PET sintered filter layer 422 can effectively absorb sound wave energy, reduce sound wave reflection and propagation, and thus reduce noise.

[0062] Referring to Figure 2 and Figure 4 The soundproof film 6 is installed on the inner bottom of the accommodating cavity 31 to cover the air inlet 311, and is located between the filter plate 41 and the inner bottom of the accommodating cavity 31, and is located between the PET sintered filter layer 422 of the filter layer 42 and the inner bottom of the accommodating cavity 31. Six air inlet holes 61 are formed on the soundproof film 6, three of which are located at one air inlet 311, and the other three are located at the other air inlet 311. The soundproof film 6 can further reduce the noise generated at the suction pipe of the compressor, effectively reducing the noise of the whole machine. Under the action of the suction of the compressor and the fan 2, the airflow can pass through the connecting pipe 51, the plug-in pipe 511, the air pipe 12, the air inlet pipe 32, the through hole 413, the filter layer 42, and the air inlet hole 61 on the soundproof film 6 into the air inlet 311 in sequence.

[0063] Referring to Figure 2 In this embodiment, the end surface of the cover body 43 is formed with a ring-shaped protrusion 431, the shape of the protrusion 431 is matched with the shape of the inner wall of the protrusion 412 on the filter plate 41, and the cross-sectional area of the space surrounded by the protrusion 431 is smaller than that of the protrusion 412. When the cover body 43 is covered at the opening of the accommodating cavity 31, the protrusion 431 is inserted between the protrusion 412 and the boss 414 on the filter plate 41, which can further prevent air overflow, and the wall of the protrusion 431 at the through hole 413 is thin to ensure that the protrusion 431 does not block the through hole 413, so as not to affect the air flow through the through hole 413 to the filter layer 42 and the cover body 43.

[0064] Referring to Figures 1 to 5The utility model discloses a gas path structure for portable oxygen generator, the compressor 7 of oxygen generator is installed in the space of the enclosure of cover body 1 and base 3, two suction pipes on compressor 7 are inserted in two suction ports 311 on base 3 respectively, when compressor 7 and fan 2 work, under the suction of compressor 7 and the blowing of fan 2, the airflow of the air outlet 21 of fan 2 blows out part for the heat dissipation of compressor 7 in cover body 1, another part passes through the connecting pipe 51 on sealing element 5, the plug-in pipe 511, the air pipe 12 on the lateral wall of cover body 1, the air inlet pipe 32 on base 3, the through -hole 413 on filter board 41, the filter cotton layer 421, the PET sintering filter layer 422, the air inlet hole 61 on sound attenuation film 6, the suction port 311 into the suction pipe of compressor 7, fan 2 combines the suction of compressor 7 itself, can improve the suction efficiency of compressor 7, guarantees the air intake of compressor 7, makes the air intake of compressor 7 more smooth, and, the noise of compressor 7 suction can be effectively superimposed together with the noise of fan 2, both reduces the noise source, and can reduce the total noise volume, in addition, the air path of compressor 7 is formed by the air inlet pipe 32 on base 3 and the air pipe 12 on cover body 1, can reduce the pipeline connection in oxygen generator, reduces the pipeline and can effectively reduce the noise of complete machine, can also effectively reduce the occupation space inside portable oxygen generator, provides the possibility for the further miniaturization of portable oxygen generator, simultaneously, sealing element 5 can seal the gap between the air outlet 21 of fan 2 and the opening 11 on cover body 1, effectively seals the noise generated by compressor 7 in cover body 1, thereby can effectively reduce the noise of complete machine, the filter cotton layer 421 of filter layer 42 can carry out the first filtration to air, the PET sintering filter layer 422 of filter layer 42 can carry out the second filtration to air and sound attenuation, thereby ensure the filtration effect to air and reduce the noise.

[0065] The above only some embodiments of the utility model, aim at explaining the technical means of the utility model, and is not the limitation of the technical range of the utility model. The person skilled in the art makes the improvement of the utility model with the prior art, and all falls into the protection scope of the utility model.

Claims

1. A gas path structure for compressor air intake of a portable oxygen generator, characterized by, The utility model provides a compressor cover body, the top of the cover body is provided with an opening, and a gas pipe is arranged on the side wall of the cover body; A fan is arranged at the opening, and the outlet of the fan is communicated with the inside of the cover body, and one end of the gas pipe is communicated with the outlet of the fan; A base is arranged, and the base is provided with a containing cavity and an air inlet pipe, the inner bottom of the containing cavity is provided with an air inlet for inserting the air suction pipe on the compressor, the cover body is arranged on the base, the other end of the gas pipe is communicated with one end of the air inlet pipe, and the other end of the air inlet pipe is communicated with the containing cavity; And a filter assembly is arranged in the containing cavity, the filter assembly comprises a filter layer, the filter layer comprises a filter cotton layer and a PET sintered filter layer stacked together, the inside and the surface of the PET sintered filter layer are both porous structures, Under the action of the fan, the airflow can pass through the gas pipe, the air inlet pipe, the filter cotton layer, the PET sintered filter layer and the air inlet in sequence. A sealing element is further arranged between the outlet of the fan and the opening, the side of the sealing element is provided with a connecting pipe, one end of the connecting pipe is communicated with one end of the gas pipe, and the other end of the connecting pipe is communicated with the outlet of the fan, the top of the cover body is provided with a containing groove, and the connecting pipe is contained in the containing groove. The bottom of one side edge of the sealing element is provided with an inclined portion, the bottom of the sealing element is provided with two downwardly extending blocking portions, the two blocking portions are respectively located on the two sides of the inclined portion and are connected with the two sides of the inclined portion respectively, and the port of the other end of the connecting pipe is located at the intersection position of the inclined portion and one blocking portion.

2. The air passage structure according to claim 1, wherein The periphery of the opening is provided with a clamping groove, and the periphery of the sealing element is provided with a clamping step matched with the clamping groove, the clamping step on the sealing element is clamped in the clamping groove on the periphery of the opening.

3. The air passage structure according to claim 2, wherein One end of the connecting pipe is provided with a plug-in pipe communicated with the connecting pipe, and the plug-in pipe is plugged in the gas pipe.

4. The air passage structure according to claim 2, wherein The filter assembly further comprises a filter plate and a cover body, the middle part of the filter plate is provided with a mounting hole, the filter layer is arranged on the filter plate to cover the mounting hole, the filter plate is contained in the containing cavity and the filter layer covers the air inlet, and the cover body covers the opening of the containing cavity to cover the containing cavity.

5. The air passage structure according to claim 2, wherein The periphery of the filter plate is provided with a protrusion, the filter plate is provided with a through hole communicated with the other end of the air inlet pipe, the periphery of the mounting hole is provided with a boss, the inner wall of the boss is provided with a clamping groove, and the periphery of the filter layer is clamped in the clamping groove.

6. The air passage structure according to claim 1, wherein The height of the protrusion is higher than the height of the boss.

7. The air passage structure according to claim 6, wherein The side wall of the containing cavity is provided with a notch, the port of the other end of the air inlet pipe is located in the notch, the shape of the periphery of the filter plate is matched with the shape of the side wall of the containing cavity, the filter plate is provided with a lug, and the through hole is arranged on the lug.

8. The air passage structure according to claim 7, wherein An acoustic membrane is further arranged on the inner bottom of the containing cavity to cover the air inlet, the acoustic membrane is provided with an air inlet hole, and the acoustic membrane is located between the filter layer and the inner bottom of the containing cavity, 9. The air passage structure according to claim 7, wherein Under the action of the fan, the airflow can pass through the gas pipe, the air inlet pipe, the through hole, the filter layer and the air inlet hole on the acoustic membrane in sequence and enter the air inlet.

10. The air passage structure according to claim 7, wherein ​ ​

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