CN217421473U - Air inlet noise reduction assembly and oxygen generator - Google Patents

Abstract

The utility model relates to the technical field of oxygen generators, in particular to an air inlet noise reduction assembly and an oxygen generator, which comprises a cover plate; the shell is arranged below the cover plate and forms a cavity with the cover plate in an enclosing manner; the first sealing element is arranged at the edge where the cover plate is contacted with the shell; the separator is arranged in the shell, forms a channel with the shell, and divides the shell into a first space and a second space, the tops of which are mutually communicated; the first vent hole is formed in the bottom of the shell in the first space; the second ventilation hole is formed in the bottom of the shell in the second space; a filter member disposed in a passage between the first ventilation hole and the second ventilation hole; the minimum vent cross-sectional area of the channel is different from the maximum vent cross-sectional area of the first space, and the minimum vent cross-sectional area of the channel is different from the maximum vent cross-sectional area of the second space; and an oxygen generator using the air inlet noise reduction assembly. The utility model discloses simple structure has effectively solved small-size oxygenerator and has fallen and make an uproar and filter difficult problem.

Description

Air inlet noise reduction assembly and oxygen generator

Technical Field

The utility model relates to an oxygenerator technical field, in particular to subassembly and oxygenerator of making an uproar fall admits air.

Background

The oil-free compressor has high noise generated by air intake, and the requirement for noise reduction is high for a plurality of use scenes such as medical instruments and the like.

For the oxygen generator, the people with the suboptimal physical conditions basically use the oxygen generator, and the requirement on quiet environment is high, so that the requirement on noise reduction of a user is high. Moreover, for the convenience of carrying, the portable oxygen generator can absorb oxygen when going out, the portable oxygen generator is more and more popular with people, people tend to pursue the miniaturization of the oxygen generator, but the small oxygen generator has small volume, compact components, some of the small oxygen generator can even contact with each other, the noise transmission during vibration is obvious, the oxygen demand of a user in a quiet environment cannot be met, and the noise reduction requirement of the small oxygen generator is higher.

Simultaneously, the compressor admits air and need filter, and the filter pulp needs often to be changed, and to small-size oxygenerator, how to make things convenient for dismouting filter pulp also is a difficult problem.

Therefore, how to simultaneously consider the noise reduction, the filtration and the miniaturization is an urgent problem to be solved in the development process of the oxygenerator.

SUMMERY OF THE UTILITY MODEL

According to the not enough of above prior art, the utility model provides an it makes an uproar subassembly to fall admits air, through setting up the separator in order to realize reducing amortization many times, filter in order to reach and fall and filterable purpose through setting up to and provide an use this oxygenerator that admits air and fall the subassembly of making an uproar, the utility model discloses simple structure, the production and the equipment of being convenient for have effectively solved small-size oxygenerator and have fallen and fall and filter difficult problem.

The utility model provides a technical scheme that technical problem adopted does:

in one aspect, the utility model provides an air intake noise reduction assembly, include:

a cover plate; and a (C) and (D) and,

the shell is arranged below the cover plate and forms a cavity with the cover plate in an enclosing manner; and a process for the preparation of a coating,

a first sealing member provided at an edge where the cover plate and the case are in contact; and a process for the preparation of a coating,

the separator is arranged in the shell, forms a channel with the shell, and divides the shell into a first space and a second space, the tops of which are mutually communicated;

the first vent hole is formed in the bottom of the shell in the first space; and a process for the preparation of a coating,

the second ventilation hole is formed in the bottom of the shell in the second space; and a process for the preparation of a coating,

a filter member provided in a passage between the first ventilation hole and the second ventilation hole;

the minimum vent cross-sectional area of the passage is different from the maximum vent cross-sectional area of the first space, and the minimum vent cross-sectional area of the passage is different from the maximum vent cross-sectional area of the second space.

Furthermore, the isolating piece surrounds the periphery of the second vent hole, a plurality of first hollows are formed in the side wall of the upper end of the isolating piece, and the first space and the second space are communicated through the first hollows.

Furthermore, the top end of the isolating piece is connected with the cover plate in a sealing mode or is integrally formed, and the bottom end of the isolating piece is connected with the shell in a sealing mode or is integrally formed.

Further, the separator includes first half and second half, first half with through second sealing member sealing connection between the second half, it is a plurality of first fretwork is seted up on the lateral wall of first half.

Further, still include in the isolator: the first partition board is arranged in a hollow manner, can be detachably or fixedly arranged in the partition piece, and divides the second space into a third space above the first partition board and a fourth space below the first partition board; the plurality of first hollows are positioned in the third space; the filter member is at least partially disposed in the third space.

Furthermore, a plurality of ribs are arranged at the bottom of the cover plate in a protruding mode downwards, a plurality of ventilation channels are formed by the ribs, the ventilation channels face the shell, openings are formed in the shell, and the first hollows correspond to the ventilation channels.

Further, a second partition plate is arranged in the first space;

the second partition plate divides the first space into a fifth space and a sixth space which are communicated up and down;

the fifth space is in direct communication with the second space;

the first vent hole is positioned in the sixth space;

the filter member is disposed in the fifth space.

Furthermore, the number of the second partition plates is 1, a plurality of through holes are formed in the second partition plates, and the second partition plates are parallel to the cover plate;

alternatively, the first and second electrodes may be,

the number of the second partition plates is a plurality, the second partition plates are vertically distributed at the bottom of the shell, and the height of the second partition plates is smaller than the distance from the cover plate to the inner surface of the shell around the first vent hole.

On the other hand, the utility model provides an oxygen generator, which comprises an oxygen generator shell, a compressor and the air inlet noise reduction assembly, wherein the compressor is arranged in the oxygen generator shell, the air inlet end of the compressor is communicated with the first vent hole, and the second vent hole is communicated with the external atmosphere;

alternatively, the first and second liquid crystal display panels may be,

the air inlet end of the compressor is communicated with the second vent hole, and the first vent hole is communicated with the outside atmosphere.

Furthermore, the oxygen generator also comprises a battery assembly, the battery assembly is connected with the shell of the oxygen generator through a sliding chute structure, the battery assembly is positioned below the shell of the oxygen generator, and the cover plate is positioned on the shell of the oxygen generator and the connecting surface of the battery assembly.

The utility model discloses following beneficial effect has: the air inlet noise reduction assembly of the utility model seals the interface by arranging the sealing element, thereby not only meeting the requirement of convenient disassembly, but also preventing noise from leaking; the air inlet space is divided into a first space and a second space by arranging the partition piece, a first vent hole is arranged in the first space, a second vent hole is arranged in the second space, and air flow enters the other space from the vent hole of the first space through the second space after passing through the first space and then flows to the air inlet end of the compressor from the vent hole of the second space; the filtering pieces are arranged among different spaces, so that the effects of filtering and noise reduction can be achieved; the utility model also provides an oxygenerator uses the air inlet noise reduction assembly as described above, and the air inlet noise reduction assembly is convenient to disassemble, and the filter piece can be replaced in time, and the filter piece and the noise reduction device are arranged together, so that the space can be saved, the noise reduction effect can be increased, the miniaturization of the oxygenerator is convenient, the compressor air inlet is changed through a plurality of times, and the noise reduction effect is better; the oxygenerator can satisfy the miniaturized demand of user, still convenient to detach satisfies the user and falls and filterable multiple demand of making an uproar, and application prospect is good.

Drawings

FIG. 1 is a schematic cross-sectional view of an embodiment of an air intake noise reduction assembly;

fig. 2 is a schematic perspective view of another air intake noise reduction assembly according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a spacer according to an embodiment of the present invention;

fig. 4 is a schematic view of a combination structure of a cover plate and an upper half according to an embodiment of the present invention;

FIG. 5 is a schematic view of a combination of a housing and a lower half according to an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of an embodiment of an air intake noise reduction assembly;

fig. 7 is an exploded view of a portion of an oxygen generator according to an embodiment of the present invention.

In the figure, 1, a cover plate 11, ribs 2, a case 3, a separator 31, an upper half 32, a lower half 4, a first space 41, a first vent hole 42, a fifth space 43, a sixth space 5, a second space 51, a second vent hole 52, a third space 53, a fourth space 6, a first separator 7, a second separator 100, a case 200, and a battery pack.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Example (b):

as shown in fig. 1, the air intake noise reduction assembly comprises an cover plate 1 and a shell 2, wherein the shell 2 is arranged below the cover plate 1, and the cover plate 1 and the shell 2 enclose a cavity for placing the air intake noise reduction assembly. And a first sealing member (not shown) provided at an edge where the cover plate 1 and the case 2 are in contact with each other, for sealing the gap between the case 2 and the cover plate 1 against noise. Inside the housing 2, a partition 3 is provided, which forms a passage with the housing 2 and divides the housing 2 into a first space 4 and a second space 5 communicating with each other at the top, where the "top" may be an upper end of the partition 3 or an upper space of the partition 3.

The air conditioner further comprises a first vent hole 41 arranged at the bottom of the shell 2 in the first space 4, and a second vent hole 51 arranged at the bottom of the shell 2 in the second space 5, wherein the number of the first vent holes 41 and the number of the second vent holes 51 are not fixed, and a plurality of the first vent holes 41 and the second vent holes 51 can be arranged, or 1 vent hole can be arranged. The air current gets into from a vent hole, through the space that this vent hole is located, through the passageway that separator 3 and casing 2 formed, gets into another space, and then flows out (enters into compressor inlet end) through the vent hole in this space, can reach the effect that the reducing was fallen and is made an uproar.

A filter element (not shown) is arranged in the passage between the first ventilation hole 41 and the second ventilation hole 51, i.e. the filter element can be arranged in the first space 4, in the second space 5, or in both the first space 4 and the second space 5, where the filter element can be the same or different types of filter cotton.

For the purpose of multiple diameter-variable sound attenuation, the minimum ventilation cross-sectional area of the passage formed between the partition 3 and the housing 2 is different from the maximum ventilation cross-sectional area of the first space 4, and the minimum ventilation cross-sectional area of the passage is different from the maximum ventilation cross-sectional area of the second space 5. That is, the airflow can reach the first space 4 from the first vent hole 41, so that the diameter can be changed once; the first space 4 enters the channel to realize primary diameter change; then, the mixture enters the second space 5 through the channel and is subjected to primary diameter change; the diameter is changed from the second space 5 to the second vent hole 51 again; or, the air current gets into second space 5 from second ventilation hole 51, realize a reducing, get into the passageway from second space 5, a reducing, then, from the passageway to first space 4 again be a reducing, then flow out through first ventilation hole 41 from first space 4, because the minimum cross sectional area of ventilating of passageway is different with the maximum cross sectional area of ventilating of first, second space, first, the cross sectional area of ventilating of ventilation hole is different with the cross sectional area of ventilating of first, second space, so can realize reducing many times, can reach the effect of making an uproar through reducing many times.

The utility model discloses a noise that sets up first sealing member and will admit air the subassembly and produce is isolated inside through sealed apron 1 and casing 2, prevents that the noise is excessive, separates into first air inlet space 4 and second air inlet space 5 with the air current air inlet space through setting up separator 3, makes the air current pass in and out this air inlet noise reduction subassembly and must pass through reducing many times, namely the air current can get into second space 5 through second air vent 51, gets into first air inlet space 4 through the passageway that forms between separator 3 and casing 2, and rethread air vent 41 flows out; or the air flow can enter through the first vent hole 41, pass through the first space 4, enter the second space 5 through the channel, and then flow out through the second vent hole 51. And, set up the filter on the route between first venthole 41 and second venthole 51, can play the effect of filtration and noise reduction, and the filter can be the same kind or different filter pulp. And, through will filtering a piece and fall the device setting of making an uproar and be in the same place, can save space, increase the noise reduction effect, be favorable to the miniaturization of equipment.

In one embodiment, as shown in fig. 2, the partition 3 surrounds the periphery of the second vent hole 51, the sidewall of the upper end of the partition is provided with a plurality of first hollows, the shapes of the first hollows are not fixed, the first space 4 and the second space 5 are communicated through the plurality of first hollows, the diameter variation is increased through the first hollows, and the noise reduction effect is further increased.

In order to ensure that the airflow is communicated between the first space 4 and the second space 5, the airflow must pass through the first hollow part to achieve the purpose of reducing the diameter, as shown in fig. 2, the top end of the isolating piece 3 is connected with the cover plate 1 in a sealing manner or is integrally formed, and the bottom end of the isolating piece 3 is connected with the casing 2 in a sealing manner or is integrally formed, wherein the isolating piece can be connected with the casing 2 through a sealing piece, and is glued and fixed in a sealing manner, or the top end of the isolating piece 3 is connected with the cover plate 1, and the bottom end of the isolating piece 3 is connected with the casing 2 in a sealing manner or is integrally formed through ultrasonic welding and the like.

For convenience of manufacture and assembly, such as for convenience of placing a filter element in the partition 3, the partition 3 includes an upper half 31 and a lower half 32, the upper half 31 and the lower half 32 are hermetically connected by a second sealing member (not shown in the figure), and a plurality of first hollows are opened on the side wall of the upper half 31. The connection mode is various, the upper half 31 covers the upper end of the lower half 32, and a second sealing element is arranged on the contact surface of the upper half 31 and the lower half 32 and used for preventing the air flow noise from leaking out from the gap between the upper half 31 and the lower half 32; as shown in fig. 3, a groove may be formed on a wall of the lower half 32 contacting the upper half 31, a lower end of the upper half 31 may be connected to the lower half 32 by inserting the groove, and a second sealing member may be formed on a contact surface of the upper half 31 and the lower half 32 to seal noise.

In one embodiment, the separator 3 further includes therein: the first clapboard 6 is arranged in a hollow way, can be detachably or fixedly arranged in the isolating piece 3, and divides the second space 5 into a third space 52 above the first clapboard 6 and a fourth space 53 below the first clapboard 6; a plurality of first openings are located in the third space 52; the filter element is at least partially disposed in the third space 52. That is, the first partition board 6 divides the second space 5 into the third space 52 and the fourth space 53, and the first partition board 6 is hollow, so the second hollow is provided on the first partition board 6, the airflow circulates in the third and fourth spaces through the second hollow on the first partition board 6, because a plurality of first hollows are provided on the upper end side wall of the partition 3, so a plurality of first hollows are provided in the third space 52, the second vent hole 51 is provided in the fourth space 53, in order to reduce noise and improve the filtering effect, the filtering member is at least partially provided in the third space 52, of course, the filtering member can be provided in the first space 4 and the third space 52 at the same time, and because the fourth space 53 is provided below the third space 52, so there is no fear that the filtering member in the third space 52 blocks the second vent hole 51.

In one embodiment, in order to further reduce the diameter, as shown in fig. 4, a plurality of ribs 11 are protruded downwards from the bottom of the cover plate 1, the plurality of ribs 11 form a plurality of ventilation channels, the ventilation channels are all opened towards the housing 2, and a plurality of first hollows all correspond to at least one ventilation channel. That is, the air flow may enter the first space 4 from the first vent hole 41, then enter the vent channel through the first hollow, and then enter the third space 52 and/or the fourth space 53; or, the air flow enters the fourth space 53 through the second vent hole 51 and enters the third space 52 through the first partition plate 6, then enters the first space 4 through the first hollow part from the vent channel, and through the arrangement of the convex ribs 11, the collision of the side wall to the air flow is increased, and further the effect of reducing noise is increased.

In order to further reduce the diameter and reduce the noise, as shown in fig. 5, a second partition 7 is disposed in the first space 4, the second partition 7 divides the first space 4 into a fifth space 42 and a sixth space 43 which are vertically communicated, the fifth space 42 is directly communicated with the second space 5, and the first vent hole 41 is located in the sixth space 43, that is, when the airflow enters the first space 4 through the first vent hole 41, the airflow needs to pass through the sixth space 43, then passes through the second partition 7, then passes through the fifth space 42, and then enters the second space 5, or the airflow enters the fifth space 42 through the second space 5, enters the sixth space 43 through the second partition 7, and then flows out through the first vent hole 41, and the first space 4 is divided into the fifth space and the sixth space by the second partition 7, so that the diameter is further reduced, and the intake noise is reduced. The filter member is disposed in the fifth space 42 to perform filtering and noise reduction functions, and because the first ventilation hole 41 is disposed in the sixth space 43, the filter member disposed in the fifth space 42 does not block the first ventilation hole 41, thereby affecting ventilation.

In order to further determine the position of the second partition 7, in one embodiment, the number of the second partitions 7 is 1, and a plurality of through holes are formed therein and arranged parallel to the cover plate 1; the upper portion of the second barrier 7 is a fifth space 42, and the lower portion of the second barrier 7 is a sixth space 43. Or, in another embodiment, as shown in fig. 5, in order to divide more space, increase the diameter variation, and reduce noise, the number of the second partition plates 7 is several, and the second partition plates 7 are vertically distributed at the bottom of the casing 2, the height of the second partition plates 7 is smaller than the distance from the cover plate 1 to the inner surface of the casing 2 around the first vent hole 41, that is, the height of the second partition plates 7 is smaller than the height of the partition members 3, and the first space 4 is divided by the second partition plates 7 into a fifth space 42 located at the top of the second partition plates 7, and a space 43 where the second partition plates 7 are located.

In one particular embodiment, as shown in FIG. 6, the intake noise reduction assembly includes: the noise reduction device comprises a cover plate 1, a shell 2 and a first sealing element (not shown in the figure) for sealing the contact edge of the cover plate 1 and the shell 2 and preventing noise from overflowing, wherein in order to reduce noise when air flow passes through a cavity formed by the shell 2 and the cover plate 1, a partition 3 is arranged in the shell 2, a channel is formed between the partition 3 and the shell 2, the shell 2 is divided into a first space 4 and a second space 5 with mutually communicated tops, a first vent hole 41 is arranged at the bottom of the shell 2 in the first space 4, and a second vent hole 51 is arranged at the bottom of the shell 2 in the second space 5, wherein the number of the first vent hole and the second vent hole is not limited, and air flow can enter the first space 4 from the first vent hole 41, reaches the second space 5 through the channel and then flows out through the second vent hole 51; the noise can also enter from the second vent hole 51, pass through the channel through the second space 5, enter the first space 4, and then flow out through the first vent hole 41, that is, the noise can be reduced by means of reducing. In order to filter and further reduce noise of the air flow in the intake noise reduction assembly, a filter element is disposed on the path between the first ventilation hole 41 and the second ventilation hole 51, and the filter element may be disposed in the first space 4, the second space 5, or both the first space and the second space, where the filter element may be filter cotton of the same or different types. In order to achieve the purpose of reducing the diameter, the minimum vent cross-sectional area of the channel is different from the maximum vent cross-sectional area of the first space 4, and the minimum vent cross-sectional area of the channel is different from the maximum vent cross-sectional area of the second space 5.

Furthermore, the isolating piece 3 surrounds the periphery of the second vent hole 51, a plurality of first hollows are arranged on the outer side wall of the isolating piece, the shape of the first hollows is not limited, the first space 4 and the second space 5 are communicated through the first hollows, airflow enters the other space from one space through the first hollows, the reducing diameter is increased, and then the noise reduction is increased. The top end of the isolating piece 3 is connected with the cover plate 1 in a sealing mode or an integrated forming mode through a sealing piece or glue or ultrasonic welding, the bottom end of the isolating piece is connected with the shell 2 in a sealing mode or an integrated forming mode through a sealing piece or glue or ultrasonic welding, the airflow can only circulate along the first hollow between the first space and the second space, and the reducing effect is better.

Furthermore, in order to facilitate manufacturing and assembly, the partition 3 is divided into an upper half 31 and a lower half 32, and the upper half 31 and the lower half 32 are hermetically connected by a second sealing member in various ways, wherein the upper half 31 covers the upper end of the lower half 32, and the second sealing member is disposed on the contact surface between the upper half 31 and the lower half 32 for preventing air flow noise from leaking out from the gap between the upper half 31 and the lower half 32; the wall of the lower half 32 contacting the upper half 31 may be provided with a groove, the lower end of the upper half 31 is connected to the lower half 32 by inserting the groove, and a second sealing member is provided on the contact surface of the upper half 31 and the lower half 32 to seal noise and prevent the noise from overflowing from the gap between the upper half 31 and the lower half 32, so that the first hollow is opened on the side wall of the upper half 31. Set up first baffle 6 in the separator 3, its fretwork sets up, form the second fretwork on first baffle 6, and first baffle 6 divide into two parts from top to bottom with second space 5, third space 52 is located first baffle 6 top, fourth space 53 is located the below of first baffle 6, first fretwork is located third space 52, second ventilation hole 51 is located fourth space 53, in order to make to filter and not block second ventilation hole 51, filter at least part and set up in third space 52, it also probably also lies in first space 4 simultaneously to filter a piece, be used for filtering and making an uproar to fall.

For further reducing, a plurality of ribs 11 are arranged at the bottom of the cover plate 1 in a protruding mode, the plurality of ribs 11 form ventilation channels, the openings of the ventilation channels face the shell 2, and the plurality of first hollows correspond to at least one ventilation channel, so that the air flow firstly enters the ventilation channels through the first hollows and then enters the third space 52, or the air flow firstly enters the ventilation channels and then enters the first space 4 through the first hollows, collision of the side wall on the air flow is increased, and reducing and silencing are further achieved.

In order to further reduce the diameter, a second partition plate 7 is arranged in the first space 4, the second partition plate 7 divides the first space 4 into a fifth space 42 and a sixth space 43 which are communicated up and down, the fifth space 42 and the second space 5 are directly communicated through a first hollow or other channel, the first air vent 41 is positioned in the sixth space 43, and in order to increase the filtering and noise reducing effects and prevent the filtering piece from blocking the first air vent 41, a filtering piece is arranged in the fifth space 42. The number of the second partition plates 7 can be 1, and a plurality of through holes are formed in the second partition plates and are arranged in parallel to the cover plate 1; the second partition plates 7 are vertically distributed at the bottom of the shell 2, the height of each second partition plate 7 is smaller than the distance from the cover plate 1 to the inner surface of the shell 2 around the corresponding first vent hole 41, the space is divided into a fifth space 42 above the second partition plates 7 and a sixth space 43 containing the second partition plates 7 through the second partition plates 7, the sixth space 43 is divided into a plurality of small spaces by the second partition plates 7, reducing is increased, and further noise reduction is achieved.

The utility model also provides an oxygenerator, including oxygenerator shell 100, the compressor and the subassembly of making an uproar falls in admitting air that combines together as above each embodiment or a plurality of embodiments, the compressor sets up in oxygenerator shell 100's inside, its inlet end is linked together with first air vent 41, second air vent 51 is linked together with external atmosphere, in an embodiment, external atmosphere gets into inside the oxygenerator from second air vent 51, reach fourth space 53 earlier, get into third space 52 through first baffle 6, filter and fall the back of making an uproar through the inside filtration piece in third space 52, get into the channel of ventilating through first fretwork, get into in fifth space 42, filter and fall the back of making an uproar through its inside filtration piece, get into sixth space 43, and get into the compressor inlet end through first air vent 41, compress in the compressor. Or, in an embodiment, the air inlet end of the compressor is communicated with the second vent hole 51, the first vent hole 41 is communicated with the external atmosphere, the external atmosphere enters the sixth space 43 through the first vent hole 41, and enters the fifth space 42 after being reduced in diameter by the second partition plate 7, the airflow passes through the filter element inside the fifth space 42 to be filtered and denoised, passes through the channel between the partition element 3 and the housing 2, which can be a first hollow channel or a channel with other shapes, enters the ventilation channel, further increases the effect of reducing and silencing through the collision of the side wall to the airflow, and further enters the third space 52, passes through the filter element to be filtered and denoised, enters the fourth space 53 through the first partition plate 6, and then enters the air inlet end of the compressor through the second vent hole 51.

The oxygen generator also includes a battery assembly 200 to provide electrical support for the normal operation of the oxygen generator. As shown in fig. 7, in order to facilitate detachment and installation, the battery assembly 200 is connected with the oxygen generator housing 100 in a sliding groove structure, the battery assembly 200 is located below the oxygen generator housing 100, and in order to make the whole oxygen generator more tidy and beautiful, the air intake noise reduction assembly can be hidden between the oxygen generator housing 100 and the battery assembly 200, which is more concealed, and the cover plate 1 is located at the connection surface between the oxygen generator housing 100 and the battery assembly 200.

In a specific application scene, a user inhales oxygen through the oxygen generator, the compressor of the oxygen generator adopts an oil-free compressor, the noise generated by air intake of the oil-free compressor is high, the user using the oxygen generator mostly has poor physical condition, and needs a quiet oxygen environment, so the user has high requirements on noise reduction of the oxygen generator; moreover, some users need to inhale oxygen at any time and any place, and in order to meet the multi-scene requirements of the users, the oxygen generator needs to be miniaturized as much as possible and is convenient to carry; in order to ensure that the purity of oxygen inhaled by a user is high and impurities are reduced, the compressor needs to filter air when air is sucked, and filter cotton is easy to dirty and needs to be replaced frequently due to impurities, dust and other particulate matters in a space. Based on the demand of these three aspects, the utility model provides an it falls subassembly to fall to admit air as above set up in the oxygenerator.

The oxygen generator comprises an oxygen generator housing 100, a compressor and battery assembly 200, an air intake noise reduction assembly and the like. The compressor is positioned inside the oxygen generator shell 100 and communicated with the air inlet noise reduction assembly, and the communication mode can be that the air inlet end of the compressor is communicated with the first vent hole 41, and the second vent hole 51 is communicated with the external atmosphere; alternatively, the air inlet end of the compressor may be communicated with the second vent hole 51, and the first vent hole 41 may be communicated with the external atmosphere. In order to facilitate replacement of the battery assembly 200, the battery assembly 200 is located below the oxygen generator housing 100 and is connected with the oxygen generator housing 100 through a sliding groove structure; based on the miniaturization of oxygenerator, for the convenience of equipment and production, and do not influence the overall layout of oxygenerator, will admit air and fall the subassembly of making an uproar and hide between oxygenerator shell 100 and battery pack 200, apron 1 is located oxygenerator shell 100 and battery pack 200's the face of being connected department.

The air inlet noise reduction assembly comprises a cover plate 1 and a shell 2, wherein a first sealing element is arranged at the edge of the cover plate 1, which is in contact with the shell 2, so that noise is prevented from overflowing; in order to increase the diameter change, a partition 3 is arranged in the shell 2, a channel is formed between the partition and the shell 2, the partition 3 divides a cavity enclosed by the cover plate 1 and the shell 2 into a first space 4 and a second space 5, the tops of the first space 4 and the second space are communicated with each other, the shell 2 at the bottom of the first space 4 is provided with first vent holes 41, the number of the first vent holes 41 is not fixed, in the embodiment, the number of the first vent holes 41 can be 1, the shell 2 at the bottom of the second space 5 is provided with second vent holes 51, the number of the second vent holes is not fixed, the number of the second vent holes can be 2, and the minimum cross-sectional area of the channel is different from the maximum vent cross-sectional area of the first space 4 and is different from the maximum vent cross-sectional area of the second space 5; the filter is disposed in a passage between the first ventilation hole 41 and the second ventilation hole 51 for noise reduction and filtration. Inside will filtering piece and falling the device of making an uproar and setting up the subassembly of making an uproar that admits air, can save space, increase the noise reduction effect, be favorable to the miniaturization of oxygenerator.

In order to further reduce the diameter, the partition 3 surrounds the periphery of the second vent hole 51, a plurality of first hollows are formed in the side wall of the upper end of the partition, and the first space 4 is communicated with the second space 5 through the first hollows; in order to make the air flow only circulate through the first hollow part, the top end part of the isolating piece 3 is connected with the cover plate 1 in a sealing manner or integrally formed, and the bottom end part of the isolating piece is connected with the shell 2 in a sealing manner or integrally formed, and the isolating piece can be in a sealing element manner, or can be glued or can be welded in an ultrasonic manner.

For convenience of assembly and production, the spacer 3 includes an upper half 31 and a lower half 32, and specifically, a groove may be provided on a wall of the lower half 32 contacting the upper half 31, a lower end of the upper half 31 is connected to the lower half 32 by inserting the groove, and a second sealing member is provided on a contact surface of the upper half 31 and the lower half 32 for sealing noise, or the upper half 31 covers a top end of the lower half 32, and a second sealing member is provided on a contact surface of the upper half 31 and the lower half 32 for preventing airflow noise from leaking out from a gap between the upper half 31 and the lower half 32; the first hollow is arranged on the side wall of the upper half 31, and the air flow can only circulate in the first space and the second space through the first hollow.

Further increase the reducing, set up first baffle 6 in isolator 3, divide second space 5 into third space 52 above it and fourth space 53 below, and, the setting of 6 fretworks of first baffle, make the air current circulate in third, fourth space through the second fretwork on first baffle 6, first fretwork is located third space 52, second ventilation hole 51 is located fourth space 53, for making to filter piece not block up second ventilation hole 51, and increase and filter and noise reduction effect, set up and filter the piece in third space 52.

In order to increase the effect of reducing amortization, the bottom at apron 1 is the downward arch and is set up a plurality of beads 11, bead 11 forms the channel of ventilating, the channel of ventilating sets up towards the equal opening in 2 directions of casing, every first fretwork all corresponds at least one channel of ventilating, make the air current from first space 4 when first fretwork gets into third space 52, just can get into third space 52 after the channel of ventilating earlier, perhaps the air current gets into first space 4 through first fretwork from third space 52 when first fretwork, need just can get into first space 4 through first fretwork through the channel of ventilating earlier, the setting of channel of ventilating, the collision of lateral wall to the air current has been increased, the effect of reducing amortization has been increased.

In addition to the increase of the diameter change in the second space 5, the diameter change may also be increased in the first space 4 to achieve the purpose of noise reduction, that is, the second partition plate 7 is disposed in the first space 4, the second partition plate 7 divides the first space 4 into a fifth space 42 and a sixth space 43 which are communicated up and down, the fifth space 42 is directly communicated with the second space 2, the first vent hole 41 is disposed in the sixth space 43, and in order to further increase the filtering and noise reduction, and prevent the filtering member from blocking the first vent hole 41, the filtering member is disposed in the fifth space 42. The number of the second partition plates 7 can be 1, a plurality of through holes are formed in the second partition plates, and the second partition plates are arranged in parallel to the cover plate; the first partition plate 7 is vertically distributed at the bottom of the shell 2, the height of the second partition plate 7 is smaller than the distance from the cover plate 1 to the inner surface of the shell around the first vent hole 41, the first space 4 is divided into a fifth space 42 at the upper part of the second partition plate 7 and a sixth space 43 containing the second partition plate 7, and the sixth space 43 is divided into a plurality of small spaces by the second partition plates 7, so that the diameter change is further increased.

The intake noise reduction assembly can be communicated with the intake end of the compressor through the first vent hole 41, and the second vent hole 51 is communicated with the outside atmosphere, so that the flow path of the atmospheric air flow in the intake noise reduction assembly is as follows: the outside atmosphere enters the fourth space 53 through the second vent hole 51, enters the third space 52 through the first partition plate 6, is filtered and denoised by the filter element in the third space 52, enters the ventilation channel and enters the fifth space 42 through the first hollow, is filtered and denoised by the filter element in the fifth space 42, enters the sixth space 43 through the second partition plate 7, and enters the air inlet end of the compressor through the first vent hole 41; the intake noise reduction assembly can also be communicated with the intake end of the compressor through a second vent hole 51, and the first vent hole 41 is communicated with the outside atmosphere, and the circulation path of the atmospheric air flow in the intake noise reduction assembly is: the external atmosphere enters the sixth space 43 through the first vent hole 41, then enters the fifth space 42 through the second partition plate 7, is filtered and denoised by the filter, enters the vent channel through the first hollow part, enters the third space 52 after the side wall collides with the air flow, is filtered and denoised by the filter, enters the fourth space 53 through the first partition plate 6, and then enters the air inlet end of the compressor through the second vent hole 51. The air current is through the reducing amortization many times in the subassembly of making an uproar that falls admits air to and filter twice of piece and fall the noise, can reduce the noise that the compressor admitted air, can filter some impurity simultaneously, like dust and harmful gas etc. of tiny granule, make the air that gets into the compressor clean air.

The above is the embodiment of the present invention, not the limitation of the patent scope of the present invention, all the equivalent structures or equivalent processes that the contents of the specification and the drawings are used for conversion, or directly or indirectly applied to other related technical fields, all the same principles are included in the patent protection scope of the present invention.

Claims (10)

1. An intake noise reduction assembly, comprising:

a cover plate; and a process for the preparation of a coating,

the shell is arranged below the cover plate and forms a cavity with the cover plate in an enclosing manner; and a process for the preparation of a coating,

a first sealing member provided at an edge where the cover plate and the case are in contact; and a process for the preparation of a coating,

the separator is arranged in the shell, forms a channel with the shell, and divides the shell into a first space and a second space, the tops of which are mutually communicated;

the first vent hole is formed in the bottom of the shell in the first space; and a process for the preparation of a coating,

the second ventilation hole is formed in the bottom of the shell in the second space; and a (C) and (D) and,

a filter member provided in a passage between the first ventilation hole and the second ventilation hole;

the minimum vent cross-sectional area of the passage is different from the maximum vent cross-sectional area of the first space, and the minimum vent cross-sectional area of the passage is different from the maximum vent cross-sectional area of the second space.

2. The air intake noise reduction assembly of claim 1,

the isolating piece surrounds the periphery of the second ventilation hole, a plurality of first hollows are formed in the side wall of the upper end of the isolating piece, and the first space is communicated with the second space through the first hollows.

3. The intake noise reduction assembly of claim 2,

the top end of the isolating piece is connected with the cover plate in a sealing mode or is integrally formed, and the bottom end of the isolating piece is connected with the shell in a sealing mode or is integrally formed.

4. The air intake noise reduction assembly of claim 3, wherein the spacer comprises an upper half and a lower half, the upper half and the lower half are connected in a sealing manner through a second sealing element, and a plurality of first hollows are formed in the side wall of the upper half.

5. The intake noise reduction assembly of claim 2 or 4, further comprising within the spacer:

the first partition board is arranged in a hollow manner, can be detachably or fixedly arranged in the partition piece, and divides the second space into a third space above the first partition board and a fourth space below the first partition board; the plurality of first hollows are positioned in the third space; the filter member is at least partially disposed in the third space.

6. The assembly of claim 5, wherein the bottom of the cover plate is provided with a plurality of ribs protruding downward, the plurality of ribs form a plurality of ventilation channels, the ventilation channels are all open towards the housing, and a plurality of the first openings correspond to at least one of the ventilation channels.

7. The air intake noise reduction assembly of claim 1 or 6, wherein a second partition plate is disposed within the first space;

the second partition plate divides the first space into a fifth space and a sixth space which are communicated up and down;

the fifth space is in direct communication with the second space;

the first vent hole is positioned in the sixth space;

the filter member is disposed in the fifth space.

8. The air intake noise reduction assembly of claim 7, wherein the number of the second partition plates is 1, a plurality of through holes are formed in the second partition plates, and the second partition plates are arranged in parallel with the cover plate;

alternatively, the first and second electrodes may be,

the number of the second partition plates is a plurality, the second partition plates are vertically distributed at the bottom of the shell, and the height of the second partition plates is smaller than the distance from the cover plate to the inner surface of the shell around the first vent hole.

9. An oxygen generator, which is characterized by comprising an oxygen generator shell, a compressor and the air inlet noise reduction assembly as claimed in any one of claims 1 to 4, 5, 6 and 8, wherein the compressor is arranged inside the oxygen generator shell, the air inlet end of the compressor is communicated with the first vent hole, and the second vent hole is communicated with the external atmosphere;

alternatively, the first and second electrodes may be,

the air inlet end of the compressor is communicated with the second vent hole, and the first vent hole is communicated with the outside atmosphere.

10. The oxygen generator according to claim 9, further comprising a battery assembly connected to the oxygen generator housing in a sliding slot structure, wherein the battery assembly is located below the oxygen generator housing, and the cover plate is located at the connecting surface of the oxygen generator housing and the battery assembly.

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