Air inlet structure of oxygen generator and oxygen generator

Abstract

The utility model discloses an oxygen generator and an air inlet structure thereof, and the air inlet structure comprises an air inlet groove which is arranged on a shell of the oxygen generator; the air inlet cover is arranged on the air inlet groove in a covering manner; an air inlet cavity is defined by the air inlet groove and the air inlet cover, an air guide opening used for guiding in heat dissipation airflow is defined between the air inlet cover and the groove wall of the air inlet groove, and a first air inlet used for guiding the heat dissipation airflow into the oxygen generator is formed in the groove bottom of the air inlet groove. An air inlet groove and an air inlet cover are arranged, so that a hidden air inlet structure is formed, and the appearance quality can be improved; external air enters the air inlet cavity through the air guide opening, and the air guide opening is formed near the groove wall, so that air flow turns to flow towards the first air inlet after entering the air inlet cavity, the length of an air path in the air inlet cavity is increased, bending of the air path is increased, and the effect of reducing noise can be achieved; and by arranging the air inlet filter part, dust and other impurities carried in the air can be prevented from entering the shell, the cleanliness of the heat dissipation airflow entering the shell is guaranteed, the path passing through the air inlet filter part is long, and the filtering effect is further guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of oxygen generators, and particularly relates to an air inlet structure of an oxygen generator and an oxygen generator with the air inlet structure. Background Art

[0002] An oxygen generator is a device capable of extracting oxygen from the air. It is mainly applied in the medical field to provide high-purity oxygen for patients in need of additional oxygen supply. Molecular sieve oxygen generators are currently commonly used, and two molecular sieves respectively perform the same cyclic process to achieve continuous gas supply. The working process is as follows: Raw air is pressurized by a compressor, and then the compressed air after treatment enters the molecular sieve through an intake valve. Nitrogen and the like are adsorbed in the molecular sieve, and the gas flowing out is high-purity oxygen. When the 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 is likely to affect the service life of the oxygen generation equipment.

[0003] Therefore, a fan needs to be provided to dissipate heat for the compressor. For example, Patent CN202123449692.2 discloses a molecular sieve oxygen generator, which includes a housing, an air compressor, and a silent exhaust fan. A gas preparation path and a heat dissipation path are formed in the housing. The housing has a first side wall and a second side wall; the gas preparation path is formed between an air inlet and a nitrogen discharge port. The air inlet penetrates through the first side wall and is used to communicate with the air inlet pipe of the air compressor to introduce the raw air for oxygen generation. The nitrogen discharge port penetrates through the second side wall; the heat dissipation path is formed between an air inlet and an air outlet. The air inlet penetrates through the first side wall and is separately arranged from the air inlet, and is used to introduce the heat dissipation air for heat dissipation. The air outlet penetrates through the second side wall and is separately arranged from the nitrogen discharge port; the air compressor is arranged on the heat dissipation path to compress the raw air; the silent exhaust fan is used to make the heat dissipation air flow through the outer surface of the air compressor. In the above patent, the air inlet and the air outlet are directly opened on the housing, so that the air inlet and the air outlet are directly located on the outer surface of the box body, affecting the appearance quality; and the heat dissipation air flow directly enters through the air inlet without being filtered, so that dust and the like enter the housing, which is not conducive to the operation of the equipment; and the design of the heat dissipation air path is not reasonable enough, and its sound insulation and noise reduction effect is poor, and the noise generated during operation is relatively large.

[0004] The above information disclosed in this background art is only used to increase the understanding of the background art of the present application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Summary of the Invention

[0005] In view of the above problems in the prior art, the present utility model proposes an air inlet structure for an oxygen generator. By providing an air inlet groove and an air inlet cover, a concealed air inlet structure is formed, which is beneficial to improving the appearance quality. And an air inlet cavity is provided, which has space for placing modules such as filtration or sound absorption.

[0006] To achieve the above-mentioned utility model purpose, the present utility model adopts the following technical solutions:

[0007] An air inlet structure for an oxygen generator, comprising:

[0008] An air inlet groove, which is provided on the outer shell of the oxygen generator;

[0009] An air inlet cover, which is covered on the air inlet groove;

[0010] The air inlet groove and the air inlet cover enclose to form an air inlet cavity. A air guiding port for guiding cooling air flow is formed between the air inlet cover and the groove wall of the air inlet groove. A first air inlet for introducing the cooling air flow into the oxygen generator is opened at the bottom of the air inlet groove.

[0011] In some embodiments of the present application, the air inlet cover has a cover body matching the open end of the air inlet groove, and a slot is opened on the cover body. The air guiding port is formed between the slot and the groove wall of the air inlet groove.

[0012] In some embodiments of the present application, the projection of the first air inlet on the air inlet cover is spaced from the air guiding port.

[0013] In some embodiments of the present application, the slot is opened at the lower end of the cover body. The first air inlet extends in the left-right direction, and the horizontal plane where the upper end of the slot is located is lower than the first air inlet.

[0014] In some embodiments of the present application, a clamping structure is provided between the air inlet cover and the air inlet groove. The air inlet cover further has a cover body and a cover edge extending inward along the edge of the cover body; a clamping groove is provided on the side wall of the air inlet groove, and a clamping claw matching the clamping groove is provided on the cover edge.

[0015] In some embodiments of the present application, the dimension of the inward extension of the cover edge is matched with the depth of the air inlet groove, and the inner end of the cover edge abuts against the bottom of the air inlet groove.

[0016] In some embodiments of the present application, an air inlet filter element is provided in the air inlet cavity outside the first air inlet. The air inlet cover is provided with a cover edge extending inward and a limiting rib, and the cover edge and the limiting rib enclose the outside of the air inlet filter element.

[0017] In some embodiments of the present application, the limiting rib is located between the air inlet filter element and the air guide port.

[0018] In some embodiments of the present application, the housing of the oxygen generator has a front wall, a rear wall, a left wall and a right wall, and the air inlet groove is provided on the rear wall.

[0019] In some embodiments of the present application, the first air inlet extends obliquely away from the air guide port in the inward direction.

[0020] In some embodiments of the present application, the oblique extension dimension of the first air inlet in the inward direction is greater than or equal to the width of the air inlet side of the first air inlet.

[0021] In some embodiments of the present application, the first air inlet has two inclined and oppositely arranged arc-shaped surfaces, and the arc-shaped surfaces are concave surfaces.

[0022] In some embodiments of the present application, a plurality of first air inlets arranged in parallel are provided at the bottom of the air inlet groove.

[0023] Based on the above air inlet structure, the present application further provides an oxygen generator having the above air inlet structure. By providing an air inlet groove and an air inlet cover, a hidden air inlet structure is formed, which is beneficial to improving the appearance quality; and an air inlet cavity is provided, which has a space for placing modules such as filtration or sound absorption.

[0024] An oxygen generator has a housing, and the above air inlet structure is provided on the housing.

[0025] Compared with the prior art, the advantages and positive effects of the present utility model are: by providing an air inlet groove and an air inlet cover, a hidden air inlet structure is formed, which is beneficial to improving the appearance quality; and outside air enters the air inlet cavity through the air guide port, and the air guide port is arranged near the groove wall, so that the air flow turns and flows towards the first air inlet direction after entering the air inlet cavity, which is beneficial to increasing the air path length in the air inlet cavity and increasing the bending of the air path, and can play a role in reducing noise; and by providing an air inlet filter element, dust and other impurities carried in the air can be reduced from entering the housing, ensuring the cleanliness of the heat dissipation air flow entering the housing, and the path through the air inlet filter element is relatively long, further ensuring the filtering effect.

[0026] After reading the specific embodiments of the present utility model in conjunction with the drawings, other features and advantages of the present utility model will become clearer. Description of the Drawings

[0027] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the attached drawings required for the embodiments. Obviously, the attached drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained based on these attached drawings.

[0028] Figure 1 It is a schematic structural diagram of an embodiment of an air inlet structure of an oxygen generator proposed by the present utility model;

[0029] Figure 2 is Figure 1 a schematic structural diagram after the middle air inlet cover is disassembled;

[0030] Figure 3 is Figure 2 an enlarged structural diagram of the middle air inlet groove;

[0031] Figure 4 is Figure 1 a sectional structural diagram of ;

[0032] Figure 5 is Figure 4 an enlarged diagram of the middle air inlet groove;

[0033] Figure 6 is Figure 5 an enlarged diagram of area A in ;

[0034] Figure 7 is Figure 1 a schematic structural diagram of the middle air inlet cover;

[0035] Figure 8 is Figure 7 an enlarged diagram of area B in ;

[0036] Figure 9 is Figure 7 a schematic structural diagram from another angle;

[0037] Among them, the oxygen generator 100;

[0038] the housing 10; the first side wall 11;

[0039] the air inlet groove 15; the air inlet cavity 150; the groove bottom 152; the card slot 153; the first air inlet 155; the air inlet side 1551; the air outlet side 1552; the arc-shaped air outlet surface 1553; the air inlet filter element 156;

[0040] the air inlet cover 16; the air guiding port 161; the cover body 162; the groove opening 1621; the cover edge 163; the clamping claw 1631; the limiting rib 164. Specific embodiments

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model.

[0042] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the positional relationship shown in the accompanying drawings. The direction close to the axis of the inner cylinder is "inner", and the opposite is "outer". The terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance; the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0043] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0044] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0045] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials. Embodiment

[0046] See Figures 1-9 , which is an embodiment of the air inlet structure of an oxygen generator proposed by the present utility model. The air inlet structure of an oxygen generator 100 is used for cooling air intake. The air inlet structure includes: an air inlet groove 15 and an air inlet cover 16. The air inlet groove 15 is provided on the outer shell 10 of the oxygen generator 100 and is formed by the inward concavity of the side wall of the outer shell 10. The air inlet cover 16 covers the open end of the air inlet groove 15. The outer shell 10 is a square shell with four side walls, and it is defined that the air inlet groove 15 is provided on the first side wall 11. The first side wall 11 can be the rear wall, or the left and right side walls, or the front wall. In this embodiment, as Figure 1 shown, the first side wall is the rear wall.

[0047] In some embodiments of the present application, see Figure 3 and Figure 5 shown, the air inlet groove 15 and the air inlet cover 16 enclose an air inlet cavity 150. An air guiding port 161 for introducing air from the outside is formed between the air inlet cover 16 and the groove wall of the air inlet groove 15. A first air inlet 155 for introducing the cooling air flow into the oxygen generator 100 is provided at the bottom 152 of the air inlet groove 15. By providing the air inlet groove 15 and the air inlet cover 16, a hidden air inlet structure is formed, which is beneficial to improving the appearance quality. And the outside air enters the air inlet cavity 150 through the air guiding port 161. The air guiding port 161 is arranged near the groove wall, so that the air flow turns and flows towards the direction of the first air inlet 155 after entering the air inlet cavity 150, which is beneficial to increasing the air path length in the air inlet cavity 150 and increasing the bending of the air path, and can play a role in reducing noise. And by providing an air inlet filter element, the dust and other impurities carried in the air can be reduced from entering the shell, ensuring the cleanliness of the cooling air flow entering the shell, and the path through the air inlet filter element is relatively long, further ensuring the filtering effect.

[0048] In some embodiments of the present application, see Figure 7 and Figure 8As shown, the air inlet cover 16 has a cover body 162 that matches the open end of the air inlet groove 15. A notch 1621 is formed at the edge of the cover body 162. A guiding air inlet 161 is formed by enclosing between the notch 1621 and the groove wall of the air inlet groove 15. By providing the notch 1621 to form the guiding air inlet 161, it can ensure that the cover body 162 matches the open end of the air inlet groove 15, and is beneficial to the manufacturing and forming of the notch 1621, simplifying the process.

[0049] In some embodiments of the present application, referring to Figure 5 As shown, the projection of the first air inlet 155 on the air inlet cover 16 is spaced from the guiding air inlet 161; that is, only the guiding air inlet 161 can be seen from the appearance, and the first air inlet 155 cannot be seen when looking inward from the guiding air inlet 161, ensuring the appearance quality and forming a hidden air inlet structure.

[0050] In this embodiment, a notch 1621 is formed at the lower end of the cover body 162. The first air inlet 155 extends in the left-right direction, and the horizontal plane where the upper end of the notch 1621 is located is lower than the first air inlet 155; ensuring that the first air inlet 155 cannot be seen from the outside. In some other embodiments, the notch 1621 can also be formed at other positions of the cover body 162.

[0051] In some embodiments of the present application, a clamping structure is provided between the air inlet cover 16 and the air inlet groove 15, so that the air inlet cover 16 is clamped and fixed in the air inlet groove 15, making the loading and unloading operation of the air inlet cover 16 convenient. The air inlet cover 16 also has a cover edge 163 extending inward along the edge of the cover body 162; a clamping groove 153 is provided on the side wall of the air inlet groove 15, and a clamping claw 1631 matching the clamping groove 153 is provided on the cover edge 163. When the air inlet cover 16 is installed inward into the air inlet groove 15, the clamping claw 1631 is clamped and fixed with the clamping groove 153.

[0052] In some embodiments of the present application, the size of the inward extension of the cover edge 163 is set to match the depth of the air inlet groove 15, and the inner end of the cover edge 163 abuts against the bottom 152 of the air inlet groove 15; it is beneficial to realize the limitation of the installation in place of the cover edge 163 without specially setting a limiting structure, which is beneficial to the simplification of the structure; and is beneficial to increasing the contact area between the cover edge 163 and the air inlet groove 15, increasing the stability after installation.

[0053] In some embodiments of the present application, referring to Figure 2 and Figure 5As shown, an air inlet filter member 156 is provided inside the air inlet cavity 150 and outside the first air inlet 155 to filter the heat dissipation air flow flowing through the air inlet cavity 150. Regarding the installation limitation of the air inlet filter member 156, an inwardly extending cover edge 163 and a limiting rib 164 are provided on the air inlet cover 16. The cover edge 163 and the limiting rib 164 surround the periphery of the air inlet filter member 156 to limit the air inlet filter member 156. The limiting rib 164 is located between the air inlet filter member 156 and the air guiding opening 161, that is, there is no air inlet filter member 156 inside the air guiding opening 161.

[0054] In some embodiments of the present application, referring to Figure 5 and Figure 6 As shown, the first air inlet 155 extends in a direction away from the air guiding opening 161 in the inward direction, that is, the first air inlet 155 extends in a direction closer to the air guiding opening 161 in the outward direction; so that the outside air entering from the first air inlet 155 flows inward and in the direction of the first air inlet 155 inside the air inlet cavity 150. The inclination direction of the first air inlet 155 is consistent with the flow direction of the air flow inside the air inlet cavity 150, which is beneficial to the smoothness of the heat dissipation air path. Preferably, the inclined extension dimension 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. 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 dimension of the first air inlet 155 in the inward direction; the dimension of the first air inlet 155 in the up and down direction is the width. By setting the inclined extension dimension to be greater than or equal to the width of the air inlet side 1551, when looking inward from the outside of the first air inlet 155, only the arc-shaped air inlet surface 1553 of the first air inlet 155 can be seen.

[0055] In some embodiments of the present application, the first air inlet 155 has two arc-shaped air inlet surfaces 1553 that are inclined and relatively arranged up and down, and the arc-shaped air inlet surface 1553 is a concave surface. By setting the arc-shaped air inlet surface 1553, it is beneficial to increase the cross-sectional dimension of the first air inlet 155 and improve the air flow rate passing through. A plurality of first air inlets 155 arranged in parallel are opened at the bottom 152 of the air inlet groove 15, and the first air inlets 155 extend in the horizontal direction. The distance between two adjacent first air inlets 155 is equal to the width of the first air inlet 155. Embodiment

[0056] Referring to Figures 1-9As shown in the figure, it is an embodiment of an oxygen generator 100 proposed by the present utility model. An oxygen generator 100 has a housing 10, and the above-mentioned air inlet structure is provided on the housing 10. By providing an air inlet groove 15 and an air inlet cover 16, a concealed air inlet structure is formed, which is beneficial to improving the appearance quality; and an air inlet chamber 150 is provided, which has a space for placing modules such as filters or silencers.

[0057] In this embodiment, the air inlet structure includes: an air inlet groove 15 and an air inlet cover 16. The air inlet groove 15 is provided on the housing 10 of the oxygen generator 100 and is formed by the inward concavity of the side wall of the housing 10; the air inlet cover 16 covers the open end of the air inlet groove 15. The housing 10 is a square shell with four side walls, and it is defined that the air inlet groove 15 is provided on the first side wall 11.

[0058] In some embodiments of the present application, the air inlet groove 15 and the air inlet cover 16 enclose to form an air inlet chamber 150. An air guide port 161 for introducing a cooling air flow from the outside is formed between the air inlet cover 16 and the groove wall of the air inlet groove 15. A first air inlet 155 for introducing the cooling air flow into the oxygen generator 100 is opened at the bottom 152 of the air inlet groove 15. By providing the air inlet groove 15 and the air inlet cover 16, a concealed air inlet structure is formed, which is beneficial to improving the appearance quality; and the outside air enters the air inlet chamber 150 through the air guide port 161. The air guide port 161 is arranged near the groove wall, so that the air flow turns towards the direction of the first air inlet 155 after entering the air inlet chamber 150, which is beneficial to increasing the air path length in the air inlet chamber 150 and increasing the bending of the air path, and can play a role in reducing noise; and by providing an air inlet filter element, the dust and other impurities carried in the air can be reduced from entering the shell, ensuring the cleanliness of the cooling air flow entering the shell, and the path through the air inlet filter element is relatively long, further ensuring the filtering effect.

[0059] In some embodiments of the present application, the air inlet cover 16 has a cover body 162 that matches the open end of the air inlet groove 15. A notch 1621 is formed at the edge of the cover body 162. The notch 1621 and the groove wall of the air inlet groove 15 enclose to form the air guide port 161. By providing the notch 1621 to form the air guide port 161, it can ensure that the cover body 162 matches the open end of the air inlet groove 15, and is beneficial to the manufacturing and forming of the notch 1621, simplifying the process.

[0060] In some embodiments of the present application, the projection of the first air inlet 155 on the air inlet cover 16 is spaced from the air guide port 161; that is, only the air guide port 161 can be seen from the outside, and the first air inlet 155 cannot be seen when looking inward from the air guide port 161, ensuring the appearance quality.

[0061] In this embodiment, a notch 1621 is formed at the lower end of the cover body 162. The first air inlet 155 extends in the left - right direction, and the horizontal plane where the upper end of the notch 1621 is located is lower than the first air inlet 155, ensuring that the first air inlet 155 cannot be seen from the outside. In some other embodiments, the notch 1621 can also be formed at other positions of the cover body 162.

[0062] In some embodiments of the present application, a clamping structure is provided between the air inlet cover 16 and the air inlet groove 15, so that the air inlet cover 16 is clamped and fixed in the air inlet groove 15, making the loading and unloading operation of the air inlet cover 16 convenient. The air inlet cover 16 further has a cover edge 163 extending inward along the edge of the cover body 162. A clamping groove 153 is provided on the side wall of the air inlet groove 15, and a clamping claw 1631 matching the clamping groove 153 is provided on the cover edge 163. When the air inlet cover 16 is installed inward into the air inlet groove 15, the clamping claw 1631 is clamped and fixed with the clamping groove 153.

[0063] In some embodiments of the present application, the dimension of the inward extension of the cover edge 163 is set to match the depth of the air inlet groove 15, and the inner end of the cover edge 163 abuts against the bottom 152 of the air inlet groove 15. This is beneficial for realizing the limitation of the proper installation of the cover edge 163 without specially setting a limiting structure, which is beneficial for simplifying the structure. And it is beneficial to increase the contact area between the cover edge 163 and the air inlet groove 15, increasing the stability after installation.

[0064] In some embodiments of the present application, an air inlet filter element 156 is provided outside the first air inlet 155 in the air inlet cavity 150 to filter the heat - dissipation air flow flowing through the air inlet cavity 150. For the installation limitation of the air inlet filter element 156, the air inlet cover 16 is provided with an inward - extending cover edge 163 and a limiting rib 164. The cover edge 163 and the limiting rib 164 surround the air inlet filter element 156 to realize the limitation of the air inlet filter element 156. The limiting rib 164 is located between the air inlet filter element 156 and the air guide port 161, that is, there is no air inlet filter element 156 inside the air guide port 161.

[0065] In some embodiments of the present application, the first air inlet 155 extends in a direction away from the air guide opening 161 in the inward direction, that is, the first air inlet 155 extends in a direction closer to the air guide opening 161 in the outward direction; such that the outside air entering through the first air inlet 155 flows inward and in the direction of the first air inlet 155 within the air inlet cavity 150. The inclination direction of the first air inlet 155 is consistent with the flow direction of the air flow within the air inlet cavity 150, which is conducive to the smoothness of the heat dissipation air path. Preferably, the inclined extension dimension 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. 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 dimension of the first air inlet 155 in the inward direction; the dimension of the first air inlet 155 in the up-down direction is the width. By setting the inclined extension dimension to be greater than or equal to the width of the air inlet side 1551, when looking inward from the outside of the first air inlet 155, only the arc-shaped air inlet surface 1553 of the first air inlet 155 can be seen.

[0066] In some embodiments of the present application, the first air inlet 155 has two arc-shaped air inlet surfaces 1553 that are inclined and arranged opposite to each other up and down, and the arc-shaped air inlet surface 1553 is a concave surface. By setting the arc-shaped air inlet surface 1553, it is beneficial to increase the cross-sectional dimension of the first air inlet 155 and improve the air flow rate passing through. A plurality of first air inlets 155 arranged in parallel are provided at the bottom 152 of the air inlet groove 15, and the first air inlets 155 extend in the horizontal direction. The distance between two adjacent first air inlets 155 is equal to the width of the first air inlet 155.

[0067] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, for those of ordinary skill in the art, it is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions required to be protected by the present invention.

Claims

1. An air inlet structure of an oxygen generator, which is used for heat dissipation air intake, is characterized in that Comprising: An air inlet groove provided on the outer shell of the oxygen generator; An air inlet cover detachably covering the air inlet groove; A clamping structure is provided between the air inlet cover and the air inlet groove. The air inlet groove and the air inlet cover enclose an air inlet cavity. A air guide port for introducing a cooling air flow is formed between the air inlet cover and the groove wall of the air inlet groove. A first air inlet for introducing the cooling air flow into the oxygen generator is provided at the bottom of the air inlet groove.

2. The air inlet structure according to claim 1, characterized in that The air inlet cover has a cover body matching the open end of the air inlet groove. A notch is provided on the cover body, and the air guide port is formed between the notch and the groove wall of the air inlet groove.

3. The air inlet structure according to claim 1, characterized in that The projection of the first air inlet on the air inlet cover is spaced from the air guide port.

4. The air inlet structure according to any one of claims 1 to 3, characterized in that, The air inlet cover further has a cover body and a cover edge extending inward along the edge of the cover body; a clamping groove is provided on the side wall of the air inlet groove, and a clamping claw matching the clamping groove is provided on the cover edge.

5. The air inlet structure according to any one of claims 1 to 3, characterized in that The air inlet cover further has a cover body and a cover edge extending inward along the edge of the cover body; the inward extension dimension of the cover edge is matched with the depth of the air inlet groove, and the inner end of the cover edge abuts against the bottom of the air inlet groove.

6. The air inlet structure according to any one of claims 1 to 3, characterized in that, An air inlet filter element is provided outside the first air inlet in the air inlet cavity. An inward extending cover edge and a limiting rib are provided on the air inlet cover, and the cover edge and the limiting rib surround the outside of the air inlet filter element.

7. The air inlet structure according to any one of claims 1 to 3, characterized in that The first air inlet extends obliquely in a direction away from the air guide port in the inward direction.

8. The air inlet structure according to claim 7, characterized in that, The oblique extension dimension of the first air inlet in the inward direction is greater than or equal to the width of the air inlet side of the first air inlet.

9. The air inlet structure according to claim 7, wherein The first air inlet has two inclined and oppositely arranged arc surfaces, and the arc surfaces are concave surfaces.

10. An oxygen generator, having a housing, characterized in that, The air inlet structure according to any one of claims 1 to 9 is provided on the outer shell.

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