Silencing structure, compressor bin and oxygen production equipment

Abstract

The utility model provides a noise reduction structure, compressor cabin and oxygen production equipment, noise reduction structure includes compressor, intake silencer and nitrogen silencer, compressor one side is connected with intake pipe, intake silencer is provided with the recess that is used for avoiding intake pipe and is connected with intake pipe one side, and nitrogen silencer is connected with the intake pipe one side of compressor and is provided with the recess that is used for avoiding intake pipe. An air inlet silencing cavity is formed in the air inlet silencer, a first air inlet and a first air outlet which are communicated with the air inlet silencing cavity are formed in the air inlet silencer, and the first air outlet is formed in the groove and connected with an air inlet pipe; the nitrogen silencing device is arranged on the other side of the compressor, a nitrogen silencing cavity is formed in the nitrogen silencing device, the nitrogen silencing device is provided with a second gas inlet and a second gas outlet which are communicated with the nitrogen silencing cavity, and the second gas inlet is used for being connected with a nitrogen pipeline; the silencing structure can be compactly arranged in the compressor bin, the space is reasonably utilized, and the noise of the compressor bin is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction of oxygen generation equipment, and particularly relates to a noise reduction structure, a compressor chamber and an oxygen generation equipment. Background Art

[0002] An oxygen generation device generates high-pressure air by a compressor, conveys the high-pressure air to an adsorption tower filled with molecular sieves, and separates nitrogen and oxygen in the air by using the pressure swing adsorption principle of the molecular sieves, so as to obtain high-purity oxygen. The oxygen generation device generates high-concentration oxygen. Most of the people using the oxygen generation equipment are in poor physical condition and need a quiet oxygen-using environment.

[0003] However, the existing oxygen generation equipment generates relatively large noise during operation. Part of the noise comes from the intake air flow of the compressor and the nitrogen air flow discharged from the molecular sieves, seriously affecting the user experience. Summary of the Utility Model

[0004] The utility model aims at the problems in the prior art, and provides a noise reduction structure, a compressor chamber and an oxygen generation equipment to solve the noise problems of the intake air flow of the compressor and the nitrogen air flow discharged from the oxygen generation equipment.

[0005] According to a first aspect of the utility model, a noise reduction structure is provided, which includes:

[0006] A compressor, one side of which is connected with an intake pipe;

[0007] An intake noise reduction device, which is arranged on the side of the compressor connected with the intake pipe, and is provided with a groove for avoiding the intake pipe. An intake noise reduction cavity is formed inside, and a first intake port and a first outlet port communicating with the intake noise reduction cavity are provided. The first outlet port is arranged in the groove and connected with the intake pipe;

[0008] A nitrogen noise reduction device, which is arranged on the other side of the compressor. A nitrogen noise reduction cavity is formed inside, and a second intake port and a second outlet port communicating with the nitrogen noise reduction cavity are provided. The second intake port is used for connecting a nitrogen pipeline.

[0009] In an embodiment of the utility model, at least one first partition board is arranged in the intake noise reduction cavity, and the first partition board divides the intake noise reduction cavity into a plurality of communicating noise reduction chambers;

[0010] And / or,

[0011] At least one second partition board is arranged in the nitrogen noise reduction cavity, and the second partition board divides the nitrogen noise reduction cavity into a plurality of communicating noise reduction chambers.

[0012] In an embodiment of the present utility model, the opening area of the second air inlet is smaller than the opening area of the second air outlet.

[0013] In an embodiment of the present utility model, sound-absorbing materials are provided in the air intake silencing chamber and / or the nitrogen silencing chamber.

[0014] According to the second aspect of the present utility model, a compressor chamber is further provided, which includes the above silencing structure and a chamber, and the silencing structure is arranged in the inner cavity of the chamber.

[0015] In an embodiment of the present utility model, the air intake silencing device is fixedly connected to the top plate of the chamber, and the first air inlet of the air intake silencing device forms a first pipe joint extending out of the top plate of the chamber; and / or,

[0016] The nitrogen silencing device is fixedly connected to the top plate of the chamber, and the second air inlet of the nitrogen silencing device forms a second pipe joint extending out of the top plate of the chamber.

[0017] In an embodiment of the present utility model, a base is connected to the bottom of the chamber, and the compressor is connected to the base.

[0018] In an embodiment of the present utility model, a heat dissipation air duct is formed between the chamber and the base, an air duct air inlet communicating with the heat dissipation air duct is provided on the chamber, and an exhaust silencing channel communicating with the heat dissipation air duct is provided on the base.

[0019] In an embodiment of the present utility model, a sound-absorbing layer is provided on the chamber and / or the base.

[0020] According to the third aspect of the present utility model, an oxygen generation device is further provided, which includes the above compressor chamber.

[0021] The beneficial effects of the present utility model are as follows:

[0022] The air intake silencing device and the nitrogen silencing device are respectively arranged on opposite sides of the compressor, with a compact structure, which can reasonably utilize the space in the compressor chamber. In the limited internal space of the compressor chamber, the volumes of the air intake silencing device and the nitrogen silencing device can be increased, thereby improving the silencing effect;

[0023] The air intake silencing device avoids the compressor's intake pipe through the groove, can better adapt to the shape of the compressor, and is closely matched with the compressor. The groove can also change the flow direction of the air flow in the air intake silencing chamber, making the air flow path more tortuous and consuming more energy, thereby effectively reducing the noise of the air flow. The first air outlet is arranged in the groove, which can be directly connected to the intake pipe, helping to reduce the pipeline length and cost.

[0024] Other features and advantages of the present utility model will become apparent from the following detailed description of exemplary embodiments of the present utility model with reference to the accompanying drawings. Description of the Drawings

[0025] The drawings incorporated in and forming a part of this specification illustrate embodiments of the present utility model and, together with the description, serve to explain the principles of the present utility model.

[0026] Figure 1 is a longitudinal sectional view of the compressor compartment provided by the present utility model;

[0027] Figure 2 is a perspective view of the compressor compartment provided by the present utility model;

[0028] Figure 3 is an exploded view of the compressor compartment provided by the present utility model;

[0029] Figure 4 is a schematic structural view of the intake silencing device of the silencing structure provided by the present utility model;

[0030] Figure 5 is a schematic structural view of the nitrogen silencing device of the silencing structure provided by the present utility model;

[0031] Figure 6 is a transverse sectional view of the compressor compartment provided by the present utility model;

[0032] Figure 7 is a sectional view of the oxygen generation equipment provided by the present utility model.

[0033] Figures 1 to 7 The one-to-one correspondence between the names of the components and the reference numerals in the drawings is as follows:

[0034] In the drawings, the reference numerals and their corresponding component names are as follows:

[0035] 1. Compressor;

[0036] 11. Intake pipe;

[0037] 2. Intake silencing device;

[0038] 21. First intake port; 22. First outlet port; 23. Groove; 24. First sound-absorbing cotton; 25. First partition;

[0039] 3. Nitrogen silencing device;

[0040] 31. Second intake port; 32. Second outlet port; 33. Perforated plate; 34. Second sound-absorbing cotton; 35. Second partition;

[0041] 4. Compartment;

[0042] 41. Top plate; 42. Side plate; 43. Air duct air inlet; 44. First sound-absorbing layer;

[0043] 5. Base;

[0044] 51. Base exhaust port; 52. Base sound-absorbing cavity; 53. Base air inlet; 54. Second sound-absorbing layer;

[0045] 6. Heat dissipation air duct. Detailed implementation mode

[0046] Now, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present invention.

[0047] The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use.

[0048] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification.

[0049] In this article, "top", "bottom", "left", "right", "up", "down", etc. are only used to represent the relative positional relationships between relevant parts, rather than defining the absolute positions of these relevant parts.

[0050] In this article, "first", "second", etc. are only used for distinction from each other, rather than indicating importance, order, and the prerequisite for mutual existence, etc.

[0051] In this article, "equal", "same", etc. are not strict mathematical and / or geometric restrictions, and also include errors that can be understood by those skilled in the art and are allowed in manufacturing or using, etc.

[0052] In this article, unless otherwise specified, the meaning of "a plurality" is two or more.

[0053] In this article, examples of various specific processes and materials are provided, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0054] The present invention provides a sound-absorbing structure, which is applied to an oxygen generation device. As Figures 1 to 4 shown, the sound-absorbing structure includes a compressor 1, an intake air sound-absorbing device 2, and a nitrogen sound-absorbing device 3 that are used to be arranged in a compressor chamber. The intake air sound-absorbing device 2 is used to reduce the noise of the air entering the compressor 1, and the nitrogen sound-absorbing device 3 is used to reduce the noise of the nitrogen discharged by the oxygen generation device.

[0055] One side of the compressor 1 is connected with an intake pipe 11. The intake silencing device 2 is arranged on the side of the compressor 1 where the intake pipe 11 is connected, and the nitrogen silencing device 3 is arranged on the other side of the compressor 1.

[0056] The bottom of the intake silencing device 2 forms a groove 23 for avoiding the intake pipe 11, an intake silencing chamber is formed inside, and a first intake port 21 and a first outlet port 22 communicating with the intake silencing chamber are provided. The first outlet port 22 is arranged in the groove 23 and connected with the intake pipe 11.

[0057] The air flow enters the intake silencing device 2 through the first intake port 21, and after silencing treatment, enters the compressor 1 through the intake pipe 11.

[0058] The inside of the nitrogen silencing device 3 forms a nitrogen silencing chamber, and a second intake port 31 and a second outlet port 32 communicating with the nitrogen silencing chamber are provided. The second intake port 31 is used for connecting the nitrogen pipeline of the oxygen generation equipment. The nitrogen separated by the oxygen generation equipment enters the nitrogen silencing device 3 through the second intake port 31, and after silencing treatment, is discharged into the inner cavity of the compressor chamber through the second outlet port 32. Further, the opening area of the second intake port 31 is smaller than the opening area of the second outlet port 32 to avoid whistling.

[0059] The intake silencing device 2 and the nitrogen silencing device 3 are respectively arranged on the opposite sides of the compressor 1, with a compact structure, reasonably utilizing the space in the compressor chamber. In the limited internal space of the compressor chamber, the volumes of the intake silencing device 2 and the nitrogen silencing device 3 can be increased, thereby improving the silencing effect.

[0060] The intake silencing device 2 avoids the intake pipe 11 through the groove 23, can better adapt to the shape of the compressor 1, is closely matched with the compressor 1, increases the volume of the intake silencing device 2, and improves the silencing effect. The groove 23 makes the intake silencing chamber form a bent air flow channel, which can change the flow direction of the air flow in the intake silencing chamber, make the path of the air flow more tortuous, consume more energy, and thus effectively reduce the noise of the air flow. The first outlet port is arranged on the side wall of the groove 23 and can be directly connected to the intake pipe 11 extending into the groove 23, which is beneficial to reducing the pipeline length, making the structure more reasonable, and also reducing the cost.

[0061] Specifically, the compressor 1 is selected as an oil-free air compressor, which has two groups of cylinder components. The intake pipe 11 is a three-way pipe and can respectively supply air to the two groups of cylinder components. The first outlet port 22 can be arranged on the side wall of the groove 23 away from the first intake port 21, which can better extend the path of the air flow.

[0062] Further, for the convenience of connection, the first air inlet 21, the first air outlet 22, and the second air inlet 31 can be configured as pipe joint structures to facilitate the connection of pipelines.

[0063] In some embodiments, sound-absorbing materials are provided in the air intake silencing chamber of the air intake silencing device 2 and / or the nitrogen silencing chamber of the nitrogen silencing device 3. The sound-absorbing materials can absorb the sound of the air flow, improving the silencing effect. The sound-absorbing materials can be selected from porous sound-absorbing materials, such as inorganic fibers, organic fibers, inorganic foams, foam plastics, etc., or other existing sound-absorbing materials can be selected.

[0064] Specifically, as Figure 1 shown, the sound-absorbing material includes a first sound-absorbing cotton 24 disposed in the air intake silencing chamber, and the first sound-absorbing cotton 24 is used to absorb the sound of the air flow in the air intake silencing chamber. The sound-absorbing material further includes a second sound-absorbing cotton 34 disposed in the nitrogen silencing chamber, and the second sound-absorbing cotton 34 is used to absorb the sound of the nitrogen flow in the nitrogen silencing chamber.

[0065] In some embodiments, as Figure 6 shown, at least one first partition 25 is disposed in the air intake silencing chamber of the air intake silencing device 2. The first partition 25 divides the air intake silencing chamber into a plurality of communicating silencing chambers. After the air flow enters the first air inlet 21, it passes through the plurality of communicating silencing chambers, and then enters the intake pipe 11 of the compressor 1 from the first air outlet 22. The first partition 25 can affect the path of the air flow and improve the silencing effect on the air flow.

[0066] In some embodiments, as Figure 6 shown, at least one second partition 35 is disposed in the nitrogen silencing chamber. The second partition 35 divides the nitrogen silencing chamber into at least two communicating silencing chambers. After the nitrogen flow enters the second air inlet 31, it passes through the plurality of communicating silencing chambers, and then is discharged from the second air outlet 32. The second partition 35 can affect the path of the air flow and improve the silencing effect on the air flow.

[0067] In some embodiments, a hollow plate 33 is provided at the bottom of the nitrogen silencing device 3, and a plurality of second air outlets 32 are provided and distributed on the hollow plate 33. It is only necessary that the opening area of the second air inlet 31 is smaller than the total opening area of the plurality of second air outlets 32. The plurality of second air outlets 32 can further play a role in silencing the air flow.

[0068] The present utility model further provides a compressor compartment, as Figure 1 shown, including a silencing structure provided by the present utility model as described above, and further including a machine compartment 4. The silencing structure is disposed in the inner cavity of the machine compartment 4.

[0069] As Figure 2 and Figure 3As shown, the inner cavity of the engine compartment 4 is a compressor chamber. The engine compartment 4 includes a top plate 41 and multiple side plates 42 that enclose the compressor chamber.

[0070] Furthermore, a base 5 is connected to the bottom of the engine compartment 4, and the compressor 1 is connected to the base 5. An open mouth for installing the base 5 is formed at the bottom of the engine compartment 4. A shock absorption device, such as a shock absorption spring, a buffer, etc., can be provided on the base 5. The shock absorption device is connected between the compressor 1 and the base 5 and can buffer the vibration of the compressor 1, thereby reducing the noise generated by the vibration.

[0071] In some embodiments, the intake silencing device 2 is fixedly connected to the top plate 41 of the engine compartment 4. The first intake port 21 of the intake silencing device 2 forms a first pipe joint that extends out of the top plate 41 of the engine compartment 4 to facilitate the connection of an air pipeline.

[0072] In some embodiments, the nitrogen silencing device 3 is fixedly connected to the top plate 41 of the engine compartment 4. The second intake port 31 of the nitrogen silencing device 3 forms a second pipe joint that extends out of the top plate 41 of the engine compartment 4 to facilitate the connection of a nitrogen pipeline.

[0073] The intake silencing device 2 and / or the nitrogen silencing device 3 can be connected to the top plate 41 by fasteners or other detachable means.

[0074] The intake silencing device 2 and / or the nitrogen silencing device 3 are configured to be flat and extend in the direction of the opposite ends of the compressor 1, and can be adapted to the shape of the inner cavity of the engine compartment 4, making the internal structure of the engine compartment 4 more compact.

[0075] In some embodiments, as Figure 1 shown, the engine compartment 4 and the base 5 enclose a heat dissipation air duct 6. In other words, a heat dissipation air duct 6 is formed in the compressor chamber. An air duct air inlet 43 communicating with the heat dissipation air duct 6 is provided on the engine compartment 4, and an exhaust passage communicating with the heat dissipation air duct 6 is provided at the bottom of the base 5.

[0076] The heat dissipation air enters the heat dissipation air duct 6 from the air duct air inlet 43 of the engine compartment 4, takes away the heat of the compressor 1, and then is discharged through the exhaust passage of the base 5 to prevent the compressor from overheating.

[0077] The air duct air inlet 43 is provided on the top plate 41 of the engine compartment 4 and is located between the intake silencing device 2 and the nitrogen silencing device 3. The air duct air inlet 43 faces the compressor 1. The intake silencing device 2 and the nitrogen silencing device 3 are provided on the opposite sides of the compressor 1, which can reduce the obstruction to the heat dissipation air, enabling the heat dissipation air to flow directly from the air duct air inlet 43 to the middle compressor 1, fully dissipating the heat of the compressor 1 and ensuring the heat dissipation efficiency.

[0078] The nitrogen silencing device 3 directly discharges nitrogen into the heat dissipation air duct 6, and the nitrogen can be discharged together with the heat dissipation air through the exhaust silencing passage of the base 5.

[0079] In some embodiments, as Figure 1 shown, a sound-absorbing layer is provided on the machine chamber 4 and / or the base 5. The sound-absorbing layer can play a role in noise reduction and reduce the transmission of noise from the compressor chamber. The sound-absorbing layer can be made of sound-absorbing cotton, sound-absorbing foam or other material layers with sound-absorbing effects.

[0080] Specifically, a first sound-absorbing layer 44 is provided on the inner wall of the machine chamber 4, and the first sound-absorbing layer 44 is distributed on the top plate 41 and a plurality of side plates 42 of the machine chamber 4. A second sound-absorbing layer 54 is provided on the top surface of the base 5. The first sound-absorbing layer 44 and the second sound-absorbing layer 54 surround the compressor chamber.

[0081] In some embodiments, as Figure 1 and Figure 3 shown, a base sound-absorbing cavity 52 is provided inside the base 5. A base air inlet 53 communicating with the heat dissipation air duct 6 is provided at the top of the base 5, and a base air outlet 51 communicating with the heat dissipation air duct 6 is provided at the bottom of the base 5. The base air inlet 53, the base sound-absorbing cavity 52 and the base air outlet 51 form an exhaust passage. The base sound-absorbing cavity 52 can play a role in noise reduction and noise elimination for the air flow, and avoid the transmission of noise along with the exhausted air flow.

[0082] The present utility model also provides an oxygen generation device, as Figure 7 shown, the oxygen generation device includes a compressor chamber provided by the present utility model as described above. The compressor chamber is provided inside the oxygen generation device.

[0083] The oxygen generation device is provided with an intake pipeline, and the intake pipeline is connected to the first intake port 21 of the intake noise reduction device 2 in the compressor chamber to supply air to the intake noise reduction device 2. The oxygen generation device is further provided with a molecular sieve device, and the nitrogen separated by the molecular sieve device is discharged through a nitrogen pipeline, and the nitrogen pipeline is connected to the second intake port 31 of the nitrogen noise reduction device 3 in the compressor chamber to supply nitrogen to the nitrogen noise reduction device 3.

[0084] The compressor chamber of the oxygen generation device reduces the noise of the intake air flow of the compressor 1 through the intake noise reduction device 2, reduces the noise of the nitrogen air flow discharged by the molecular sieve device through the nitrogen noise reduction device 3, and integrally eliminates the noise of the exhausted heat dissipation air and nitrogen through the exhaust passage of the base 5, and also reduces the transmission of noise from the compressor chamber through the sound-absorbing layer, comprehensively and effectively reducing the noise of the oxygen generation device, and can provide a quiet oxygen-using environment for users when the oxygen generation device is working.

[0085] The various embodiments of the present utility model have been described above. The above description is exemplary and not exhaustive, and is also not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to technologies in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein. The scope of the present utility model is defined by the appended claims.

Claims

1. A sound-absorbing structure, characterized in that, Including those to be arranged in a compressor compartment: A compressor, with an intake pipe connected to one side thereof; An intake silencing device, which is arranged on the side of the compressor where the intake pipe is connected, and is provided with a groove for avoiding the intake pipe, an intake silencing chamber is formed inside, and a first intake port and a first outlet port communicating with the intake silencing chamber are provided, the first outlet port is arranged in the groove and connected to the intake pipe; A nitrogen silencing device, which is arranged on the other side of the compressor, a nitrogen silencing chamber is formed inside, and a second intake port and a second outlet port communicating with the nitrogen silencing chamber are provided, the second intake port is used for connecting a nitrogen pipeline.

2. The silencing structure according to claim 1, wherein: At least one first partition is arranged in the intake silencing chamber, and the first partition divides the intake silencing chamber into a plurality of communicating silencing chambers; And / or, At least one second partition is arranged in the nitrogen silencing chamber, and the second partition divides the nitrogen silencing chamber into a plurality of communicating silencing chambers.

3. The silencing structure according to claim 1, wherein: The opening area of the second intake port is smaller than the opening area of the second outlet port.

4. The silencing structure according to any one of claims 1 to 3, wherein: Sound-absorbing materials are arranged in the intake silencing chamber and / or the nitrogen silencing chamber.

5. A compressor compartment, characterized in that, Including the silencing structure according to any one of claims 1 - 4 above, further including a machine compartment, and the silencing structure is arranged in the inner cavity of the machine compartment.

6. The compressor compartment according to claim 5, wherein: The intake silencing device is fixedly connected to the top plate of the machine compartment, and the first intake port of the intake silencing device forms a first pipe joint extending out of the top plate of the machine compartment; And / or, The nitrogen silencing device is fixedly connected to the top plate of the machine compartment, and the second intake port of the nitrogen silencing device forms a second pipe joint extending out of the top plate of the machine compartment.

7. The compressor compartment according to claim 5 or 6, wherein: The bottom of the machine compartment is connected with a base, and the compressor is connected to the base.

8. The compressor compartment according to claim 7, wherein: The machine compartment and the base enclose a heat dissipation air duct, an air duct air inlet communicating with the heat dissipation air duct is arranged on the machine compartment, and an exhaust silencing channel communicating with the heat dissipation air duct is arranged on the base.

9. The compressor compartment according to claim 7, characterized in that, A sound-absorbing layer is arranged on the machine compartment and / or the base.

10. An oxygen generation device, characterized in that, Including the compressor compartment according to any one of claims 5 to 9 above.

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