Filtering and silencing structure for oxygen generator

Abstract

The filtering and silencing structure comprises a filtering plate and a filtering layer, an installation hole is formed in the middle of the filtering plate, the filtering layer is arranged on the filtering plate to cover the installation hole, the filtering layer comprises a filtering cotton layer and a PET sintering filtering layer which are stacked together, and the interior and the surface of the PET sintering filtering layer are of a porous structure. The filtering and noise reduction structure is simple in structure, one component can ensure the air filtering effect and effectively reduce noise at the air suction port of the compressor, cost is reduced, and the number of assembling procedures can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of oxygen generator, especially a filter silencing structure for oxygen generator. BACKGROUND

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

[0003] In order to prevent dust, particulate matter, pollutants and other impurities in the air from entering the suction port of the compressor to cause wear or damage to the internal components of the compressor, a filter component is usually installed at the suction port of the compressor of the oxygen generator. In the existing portable oxygen generator, the filter component is basically filter cotton, and the filtering effect is not ideal. Moreover, when the airflow passes through the suction port of the compressor, it will produce turbulence and vibration, resulting in noise. When the compressor is running, the vibration of the mechanical components will be transmitted to the suction port, further increasing the noise. Therefore, a silencing component needs to be installed at the suction port of the compressor, which will make the structure at the suction port of the compressor more complex, both the filter component and the silencing component need to be installed, which not only increases the cost, but also increases the assembly process, resulting in further increase in cost. SUMMARY

[0004] The utility model aims at overcoming the above-mentioned deficiencies of prior art, and provides a filter silencing structure for oxygen generator.

[0005] According to one aspect of the utility model, a filter silencing structure for oxygen generator is provided, comprising:

[0006] A filter plate, the middle part of the filter plate is provided with a mounting hole; and

[0007] A filter layer, the filter layer is arranged on the filter plate to cover the mounting hole, and the filter layer comprises filter cotton layers and PET sintered filter layers stacked together, and the inside and surface of the PET sintered filter layer are both in porous structure.

[0008] The utility model discloses a filter sound -absorbing structure for portable oxygen generator, filter board is installed at the suction port of the compressor of oxygen generator, the filter cotton layer of filter layer can carry out the first filtration to air, PET sintering filter layer can carry out the second filtration to air, because the inside and surface of PET sintering filter layer are all porous structure, it can effectively intercept particulate matter, provide higher filtration efficiency, PET sintering filter layer has deep -layer filtration characteristic, can capture different size particulate matter, in addition, the porous structure of PET sintering filter layer inside can effectively absorb sound wave energy, reduce sound wave reflection and propagation, thereby reducing noise, when sound wave passes through PET sintering filter layer, part energy is converted into heat energy because of friction and viscous effect, further weakens sound wave intensity, the complex internal structure of PET sintering filter layer will make sound wave scatter, reduce the concentrated propagation of sound wave, reach sound -absorbing effect, the damping characteristic of PET sintering filter layer material itself can inhibit vibration, reduce the noise of vibration generation, the acoustic impedance of PET sintering filter layer is close to air, is helpful to the sound wave entering material inside and being absorbed, instead of reflection, namely PET sintering filter layer passes through porous structure, energy conversion, sound wave scattering, damping effect and impedance matching mechanism, can effectively reduce the noise of the suction port of compressor, the filter sound -absorbing structure of the utility model, simple structure, one component can ensure the filtration effect to air and can effectively reduce the noise of the suction port of compressor, not only reduces the cost, and can reduce the process of assembly.

[0009] Further, the periphery of the mounting hole is provided with a ring of bosses, the inner wall of the bosses is provided with a ring of clamping grooves, and the periphery of the filter layer is clamped in the clamping grooves.

[0010] Therefore, the filter layer can be stably mounted on the filter plate through the clamping grooves, and the filter layer can filter and reduce noise when the filter sound-absorbing structure is installed at the suction port of the compressor.

[0011] Further, the periphery of the filter plate is provided with a ring of protrusions, and the filter plate is provided with a through hole for communicating with an air inlet pipe on the oxygen generator.

[0012] Therefore, when the compressor is working, the airflow enters the through hole on the filter plate through the air inlet pipe on the oxygen generator under the suction force of the compressor, and when the filter sound-absorbing structure of the utility model is installed in a cavity at the suction port of the compressor and a cover is installed at the opening of the cavity, the airflow entering from the through hole can enter the space enclosed by the protrusions and the cover, and then the airflow can enter the suction port of the compressor for the compressor to suck air after passing through the filter cotton layer and the PET sintering filter layer.

[0013] Further, the height of the protrusions is higher than the height of the bosses.

[0014] Therefore, the design can ensure that the height of the filter layer is lower than the height of the protrusion, when the filter sound reduction structure is installed in a cavity at the suction port of the compressor and a cover is installed at the opening of the cavity, a gap can be ensured between the filter layer and the cover, so that the airflow entering from the through hole can flow between the filter layer and the cover, and under the suction of the compressor, the airflow can smoothly pass through the filter cotton layer and the PET sintered filter layer and enter the suction port for the compressor to inhale air.

[0015] Further, the filter cotton layer is close to the top of the protrusion, and the PET sintered filter layer is away from the top of the protrusion.

[0016] Therefore, when the filter sound reduction structure is installed in a cavity at the suction port of the compressor, the PET sintered filter layer is closer to the suction port of the compressor, so that the noise reduction effect can be guaranteed.

[0017] Further, the side of the filter plate is provided with a lug, and the through hole is arranged on the lug.

[0018] Therefore, the lug on the filter plate can effectively utilize the space inside the oxygen generator, so that the through hole on the lug and the air inlet pipe on the oxygen generator can be more easily connected.

[0019] Further, the lug is formed by extending a part of the edge of the filter plate outwardly.

[0020] Therefore, the lug and the filter plate can be kept in the same plane, and the airflow entering from the through hole on the lug can smoothly and quickly pass through the filter layer.

[0021] Further, the protrusion surrounding wall is at the periphery of the filter plate and the lug.

[0022] Therefore, when the filter sound reduction structure is installed in a cavity at the suction port of the compressor and a cover is installed at the opening of the cavity, the filter plate, the lug, the protrusion and the cover can jointly enclose the filter layer.

[0023] Further, the boss is square in shape.

[0024] Therefore, the boss in square shape can install the filter layer in square shape, and when the filter sound reduction structure is installed in a cavity at the suction port of the compressor, the filter layer in square shape can cover multiple suction ports on the compressor at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic view of a filter sound reduction structure for an oxygen generator of the utility model;

[0026] Figure 2 is Figure 1A schematic diagram of the filter noise reduction structure from another perspective;

[0027] Figure 3 for Figure 2 The diagram shows a split structure of the filter noise reduction structure.

[0028] Figure 4 for Figure 1 Another structural schematic diagram of the filter noise reduction structure shown;

[0029] Figure 5 for Figure 4 The diagram shows a cross-sectional view of the filter and noise reduction structure along the AA direction.

[0030] Figure 6 for Figure 1 The diagram shows the usage status of the filter and noise reduction structure.

[0031] Figure 7 for Figure 6 The diagram shows a split structure. Detailed Implementation

[0032] 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.

[0033] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. It should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components.

[0034] See Figures 1 to 5 A filter and noise reduction structure for an oxygen generator includes a filter plate 1 and a filter layer 2.

[0035] See Figures 1 to 5The middle part of the filter plate 1 is formed with a mounting hole 11, the filter layer 2 is mounted on the filter plate 1 to cover the mounting hole 11, the periphery of the mounting hole 11 is formed with a ring-shaped boss 12, the inner wall of the boss 12 is formed with a ring-shaped clamping groove 13, the periphery of the filter layer 2 is clamped in the clamping groove 13 to cover the mounting hole 11, and the filter layer 2 can be stably mounted on the filter plate 1 through the clamping groove 13; when the filter and sound reduction structure is mounted at the air suction port of the compressor, the filter layer 2 can filter and reduce noise, the filter layer 2 can filter out dust and impurities in the air, help the molecular sieve in the oxygen generator to more effectively separate oxygen and nitrogen, ensure that the finally output oxygen is purer, and after the dust and impurities in the air are filtered out, the failure rate of the compressor can be reduced, and stable operation of the oxygen generator can be ensured.

[0036] Referring to Figure 3 The filter layer 2 comprises a filter cotton layer 21 and a PET sintered filter layer 22 stacked together, the PET sintered filter layer 22 is formed by sintering a PET material, the inside and surface of the PET sintered filter layer 22 are both in a porous structure, the PET sintered filter layer 22 is microporous in the whole body, the filter cotton layer 21 can perform first filtering on the air to filter out dust and impurities in the air, and the PET sintered filter layer 22 with the inside and surface both in a porous structure can perform second filtering and sound reduction on the air, the inside and surface of the PET sintered filter layer 22 being both in a porous structure can effectively intercept particulate matters and provide higher filtering efficiency, the PET sintered filter layer 22 has deep filtering characteristics and can capture particulate matters of different sizes, in addition, the porous structure inside the PET sintered filter layer 22 can effectively absorb sound wave energy, reduce sound wave reflection and propagation, thereby reducing noise, when the sound wave passes through the PET sintered filter layer 22, part of the energy is converted into heat energy due to friction and viscous action, further weakening the sound wave intensity, the complex internal structure of the PET sintered filter layer 22 can scatter the sound wave, reduce the concentrated propagation of the sound wave, achieve the sound reduction effect, the damping characteristics of the PET sintered filter layer 22 material can inhibit vibration and reduce noise generated by vibration, the acoustic impedance of the PET sintered filter layer 22 is close to that of air, which helps the sound wave to enter the material inside and be absorbed instead of being reflected, that is, the PET sintered filter layer 22 can effectively reduce the noise at the air suction port of the compressor through the mechanisms of the porous structure, energy conversion, sound wave scattering, damping effect and impedance matching, the filter and sound reduction structure of the utility model can ensure both the filtering effect on the air and the effective reduction of the noise at the air suction port of the compressor.

[0037] Referring to Figure 2 and Figure 3In the embodiment, the boss 12 is square-shaped, and the filter cotton layer 21 and the PET sintered filter layer 22 are also square-shaped, the square-shaped boss 12 can be installed with the square-shaped filter layer 2, when the filter sound-absorbing structure is installed in a cavity at the suction port of the compressor, the square-shaped filter layer 2 can cover multiple suction ports on the compressor at the same time. In other embodiments, the shapes of the boss 12 and the filter layer 2 can be adaptively adjusted according to filtering requirements and installation positions.

[0038] Referring to Figure 2 and Figure 3 , the periphery of the filter plate 1 is formed with a ring-shaped protrusion 14, and the filter plate 1 is formed with a through hole 15, the through hole 15 is used for communication with an air inlet pipe on an oxygen generator, when the compressor works, under the suction of the compressor, the airflow enters the through hole 15 on the filter plate 1 through the air inlet pipe on the oxygen generator, when the filter sound-absorbing structure is installed in a cavity at the suction port of the compressor and a cover is installed at the opening of the cavity, the airflow entering from the through hole 15 can enter the space surrounded by the protrusion 14 and the cover, and then the airflow can enter the suction port of the compressor after passing through the filter cotton layer 21 and the PET sintered filter layer 22 for the compressor to inhale.

[0039] Referring to Figure 2 , the height of the protrusion 14 is higher than the height of the boss 12, such a design can ensure that the height of the filter layer 2 is lower than the height of the protrusion 14, when the filter sound-absorbing structure is installed in a cavity at the suction port of the compressor and a cover is installed at the opening of the cavity, it can be ensured that there is a gap between the filter layer 2 and the cover, so that the airflow entering from the through hole 15 can flow between the filter layer 2 and the cover, under the suction of the compressor, the airflow can smoothly pass through the filter cotton layer 21 and the PET sintered filter layer 22 to enter the suction port for the compressor to inhale.

[0040] Referring to Figure 3 and Figure 5 , the filter cotton layer 21 of the filter layer 2 is close to the top of the protrusion 14, and the PET sintered filter layer 22 of the filter layer 2 is away from the top of the protrusion 14, when the filter sound-absorbing structure is installed in a cavity at the suction port of the compressor, it can be ensured that the PET sintered filter layer 22 is closer to the suction port of the compressor, so as to guarantee the noise reduction effect.

[0041] Referring to Figures 1 to 4, the side of the filter plate 1 is formed with a lug 16, the lug 16 is formed by the outward extension of a part of the edge of the filter plate 1, the through hole 15 is arranged on the lug 16, and the protrusion 14 is surrounded by the filter plate 1 and the periphery of the lug 16, the lug 16 on the filter plate 1 can effectively utilize the space inside the oxygen generator, the through hole 15 on the lug 16 is more easily connected with the air inlet pipe on the oxygen generator, the lug 16 is kept in the same plane with the filter plate 1, the airflow entering from the through hole 15 on the lug 16 can smoothly and quickly pass through the filter layer 2, when the filter and sound elimination structure is installed in a cavity at the air suction port of the compressor and a cover is installed at the opening of the cavity, the filter plate 1, the lug 16, the protrusion 14 and the cover can collectively enclose the filter layer 2.

[0042] Refer to Figure 6 And Figure 7 , the bottom of the base 3 of the oxygen generator is formed with an inner concave cavity 31, two air inlets 311 are formed on the inner bottom of the cavity 31, the compressor shell 4 is installed on the base 3, the compressor is installed in the compressor shell 4, two air suction ports of the compressor are communicated with the two air inlets 311, the fan 5 is installed on the top of the compressor shell 4, the side wall of the cavity 31 is formed with a gap 312, an air inlet pipe 313 is formed on the inner bottom of the cavity 31, the port of the air inlet pipe 313 is located at the gap 312, an air pipe (not shown) is arranged on the side wall of the compressor shell 4, one end of the air pipe is communicated with the air outlet of the fan 5, and the other end of the air pipe is communicated with the air inlet pipe 313, the filter and sound elimination structure of the utility model is installed in the cavity 31, the shape of the periphery of the filter plate 1 is adapted to the shape of the side wall of the cavity 31, the lug 16 on the filter plate 1 is located at the gap 312, the air inlet pipe 313 at the gap 312 is aligned with the through hole 15 on the lug 16, and the cover 6 is covered at the opening of the cavity 31; the airflow blown by the fan 5 can pass through the air pipe, the air inlet pipe 313, the through hole 15, enter the space enclosed by the protrusion 14 and the cover 6, and then pass through the filter cotton layer 21 and the PET sintered filter layer 22 of the filter layer 2 and then enter the air suction port of the compressor through the air inlet 311 for the compressor to inhale, the filter cotton layer 21 of the filter layer 2 can filter the air for the first time, and the PET sintered filter layer 22 can filter the air for the second time and reduce noise, the filter and sound elimination structure of the utility model is simple in structure, one component can not only ensure the filtering effect of the air but also effectively reduce the noise at the air suction port of the compressor, thereby reducing the cost and reducing the assembly process.

[0043] The above only describes some embodiments of the utility model, which aims to explain the technical means of the utility model, and does not limit the technical range of the utility model. Those skilled in the art can make obvious improvements to the utility model according to the existing common knowledge, which falls within the protection scope of the utility model.

Claims

1. A filtering and silencing structure for an oxygen generator, characterized in that, The utility model relates to a filter plate for oxygen generator, which comprises: a filter plate with a mounting hole in the middle; and a filter layer arranged on the filter plate to cover the mounting hole, which comprises a filter cotton layer and a PET sintered filter layer stacked together, and the inside and surface of the PET sintered filter layer are both porous structures.

2. The filtering sound attenuating structure of claim 1, wherein, The periphery of the mounting hole is provided with a ring-shaped protrusion, and the inner wall of the protrusion is provided with a ring-shaped clamping groove, and the periphery of the filter layer is clamped in the clamping groove.

3. The filtering sound attenuating structure of claim 2, wherein, The periphery of the filter plate is provided with a ring-shaped protrusion, and the filter plate is provided with a through hole for communicating with the air inlet pipe of the oxygen generator.

4. The filtering sound attenuating structure of claim 3, wherein, The height of the protrusion is higher than that of the protrusion.

5. The filtering sound attenuating structure of claim 3, wherein, The filter cotton layer is close to the top of the protrusion, and the PET sintered filter layer is away from the top of the protrusion.

6. The filtering sound attenuating structure in accordance with claim 3, wherein, The side of the filter plate is provided with a lug, and the through hole is arranged on the lug.

7. The filtering sound attenuating structure of claim 6, wherein, The lug is formed by extending outward from a part of the edge of the filter plate.

8. The filtering sound attenuating structure of claim 6, wherein, The protrusion is surrounded by the periphery of the filter plate and the lug.

9. The filtering sound attenuating structure in accordance with claim 2, wherein, The protrusion is in a square shape.

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