Silencing device and oxygen generator
By employing a multi-stage noise reduction structure and a limiting part to fix the compressor in a small oxygen concentrator, the noise problem during operation of the oxygen concentrator is solved, achieving a balance between noise reduction and gas input, making it suitable for homes, hospitals, and other places.
Patent Information
- Application Number
- CN202520262185.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-02-19
AI Technical Summary
Small oxygen concentrators are noisy when they are working, which affects the rest and recuperation of users. Existing noise reduction devices have poor noise reduction effect, and increasing the amount of noise reduction cotton will affect the gas input.
It adopts a multi-stage noise reduction structure, including an intake chamber, an exhaust chamber, and a noise reduction chamber. The chambers are filled with noise reduction material, and noise is reduced through a multi-stage noise reduction path. A limiting part is set to fix the compressor and reduce displacement noise.
Through multi-stage noise reduction paths and limiting structures, the noise of the oxygen generator during operation is significantly reduced, the gas input is increased, and the compact structure makes it suitable for use in vehicles.
Smart Images
Figure CN223665180U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of noise reduction technology, and in particular relates to a noise reduction device and an oxygen generator. Background Technology
[0002] Small oxygen concentrators are widely used in homes, hospitals, nursing homes, and other fields due to their portability and lightweight features.
[0003] Small oxygen concentrators in related technologies are noisy when working, which can affect the rest and recuperation of users.
[0004] Therefore, how to reduce the noise of small oxygen concentrators during operation is a technical problem that urgently needs to be solved.
[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content
[0006] This disclosure provides at least one silencing device and an oxygen generator.
[0007] In a first aspect, embodiments of this disclosure provide a noise reduction device, including:
[0008] Silencer box;
[0009] The muffler box is provided with an air intake chamber and an exhaust chamber, and a muffler chamber is provided between the air intake chamber and the exhaust chamber;
[0010] The air intake chamber and the exhaust chamber are respectively disposed on both sides of the muffler box and are connected through the muffler box;
[0011] The air intake chamber is connected to the air intake port of the muffler box, and the exhaust chamber is connected to the exhaust port of the muffler box;
[0012] The air intake chamber, exhaust chamber, and muffler chamber are all filled with sound-absorbing material.
[0013] In one optional embodiment, the silencing cavity is provided with multiple partitions at intervals;
[0014] A secondary anechoic chamber is formed between two adjacent partitions;
[0015] Each of the partitions is provided with an airway opening, and the airways openings of two adjacent partitions are staggered.
[0016] In one optional embodiment, an air vent penetrating through the silencing housing is provided in the middle of the silencing housing;
[0017] The number of the silencing cavities is two;
[0018] The two silencing cavities are respectively located on both sides of the air vent.
[0019] In one alternative embodiment, a limiting portion extends downward from the bottom of the silencing housing;
[0020] The bottom surface of the silencer box and the side surface of the limiting part form a limiting space, which limits the top of the external compressor.
[0021] In one optional embodiment, the cross-section of the limiting portion is shaped like a "π".
[0022] Furthermore, the side of the limiting part away from the limiting space is provided with multiple reinforcing ribs at intervals.
[0023] Secondly, embodiments of this disclosure provide an oxygen generator, comprising:
[0024] Oxygen adsorption tower, compressor, and two silencers as described above;
[0025] The compressor's gas supply pipe is connected to the oxygen adsorption tower;
[0026] The compressor's intake pipe is connected to the outside air through one of the silencers;
[0027] The nitrogen venting pipe of the oxygen adsorption tower is connected to the outside air through another silencer.
[0028] In one alternative embodiment, a limiting portion extends downward from the bottom of the silencing housing;
[0029] The bottom surface of the silencer box and the side surface of the limiting part form a limiting space to limit the top of the compressor;
[0030] The two silencer boxes are arranged side by side;
[0031] The limiting portions of the two silencer housings are arranged opposite each other, and the top of the compressor is located between the two limiting portions.
[0032] In one optional embodiment, the air inlet and exhaust outlet of the muffler are respectively located on the top and bottom surfaces of the muffler.
[0033] Alternatively, the exhaust port and air inlet of the muffler box are respectively located on the top and bottom surfaces of the muffler box.
[0034] In one alternative embodiment, the exhaust ports of the two silencer housings are located on the same horizontal plane;
[0035] That is, the exhaust port of one of the muffler boxes is located on the bottom surface of the muffler box, and the exhaust port of the other muffler box is also located on the bottom surface of the muffler box.
[0036] In one alternative embodiment, the oxygen generator further includes two cooling fans;
[0037] Each of the sound-absorbing boxes has an air vent that penetrates through the sound-absorbing box in the middle;
[0038] The cooling fan is positioned above the corresponding soundproof box, and the air outlet of the cooling fan is connected to the air guide.
[0039] The number of the silencing cavities is two;
[0040] The two silencing cavities are respectively located on both sides of the air vent.
[0041] The beneficial effects of this utility model are that the silencing device and oxygen generator improve the silencing of compressed air intake and nitrogen exhaust. After the gas flows through the intake chamber to absorb noise, it enters the silencing chamber for further silencing. Finally, it converges in the exhaust chamber, absorbs noise again, and is discharged from the silencing box. By setting a multi-stage silencing structure, the distance of the silencing path is increased, the noise reduction effect on the gas is improved, and the noise of the oxygen generator during operation is reduced.
[0042] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.
[0043] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0044] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0045] Figure 1 This is a schematic diagram of the structure of the silencing device provided in the embodiments of this disclosure;
[0046] Figure 2 This is a partial structural schematic diagram of the silencing device provided in an embodiment of the present disclosure;
[0047] Figure 3 This is a partial structural schematic diagram of the noise reduction device after the noise reduction material is removed, provided in an embodiment of this disclosure;
[0048] Figure 4 This is a partial structural schematic diagram of an oxygen generator provided in an embodiment of this disclosure.
[0049] In the diagram: 100, silencer housing; 110, air inlet chamber; 111, air inlet; 120, exhaust chamber; 121, exhaust outlet; 130, silencer housing; 131, partition; 132, secondary silencer chamber; 1311, air duct; 140, air guide; 150, limiting part; 151, reinforcing rib; 160, limiting space; 200, oxygen adsorption tower; 210, nitrogen exhaust pipe; 300, compressor; 310, air inlet pipe; 320, air supply pipe; 400, cooling fan. Detailed Implementation
[0050] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0051] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.
[0052] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.
[0053] The inventors discovered that the noise generated during the operation of an oxygen concentrator is mainly due to gas delivery, and can be divided into two types. First, there is the noise from the compressor intake. During compressor operation, the reciprocating motion of the piston within the cylinder and the two valves forcing unidirectional airflow create noise. The clattering sound of the valves and the airflow noise are transmitted outwards through the pipes. Second, there is the popping sound generated when the oxygen adsorption tower releases a large amount of nitrogen gas during nitrogen discharge, and the noise generated by the friction between the airflow and the pipes during jetting. Current silencing devices in related technologies consist of a single cavity with sound-absorbing cotton, resulting in poor noise reduction and still significant external noise transmission. Increasing the amount of sound-absorbing cotton increases gas resistance, reduces gas input, and affects the oxygen concentrator's gas volume requirements. Therefore, improving the silencing effect of the device is key to reducing the noise during oxygen concentrator operation, and this is the problem and objective of this utility model.
[0054] Based on the above research, this disclosure provides a silencing device and an oxygen generator that improves the silencing of compressed air intake and nitrogen exhaust by setting a multi-stage silencing structure, increasing the distance of the silencing path, and improving the noise reduction effect on the gas, thereby reducing the noise of the oxygen generator during operation.
[0055] The shortcomings of the above solutions are the result of the inventors' practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the inventors to this disclosure.
[0056] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0057] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0058] Please see Figure 1 and Figure 2 At least one embodiment provides a silencing device, comprising the following structure:
[0059] The silencing housing 100 includes a base and a top cover. The base and top cover are ultrasonically bonded together and then reinforced with screws to form a sealed cavity, preventing airflow leakage and noise leakage, thereby reducing noise.
[0060] The silencer housing 100 is provided with an air intake chamber 110 and an exhaust chamber 120, and a silencer chamber 130 is provided between the air intake chamber 110 and the exhaust chamber 120. By setting up a multi-stage silencer structure, the distance of the silencer path is increased, the noise reduction effect on the gas is improved, and the noise of the oxygen generator during operation is reduced.
[0061] The intake chamber 110 and the exhaust chamber 120 are respectively disposed on both sides of the muffler housing 100 and connected through the muffler housing 130. After absorbing noise through the intake chamber 110, the gas enters the muffler housing 130 for further noise reduction, and finally converges in the exhaust chamber 120, absorbs noise again, and is discharged from the muffler housing 100. This achieves multiple sound absorption, improving the absorption effect of the sound-absorbing material.
[0062] The air intake chamber 110 is connected to the air inlet 111 of the muffler box 100, and the exhaust chamber 120 is connected to the exhaust outlet 121 of the muffler box 100. It should be noted that the air inlet 111 can be located on the top or bottom surface of the muffler box 100, and the exhaust outlet 121 can be located on the bottom or upper surface of the muffler box 100, and the air inlet 111 and exhaust outlet 121 are located on the same horizontal plane.
[0063] The air intake chamber 110, exhaust chamber 120, and silencing chamber 130 are all filled with sound-absorbing material. The sound-absorbing material is a high-density, breathable, flexible nanomaterial or a polyurethane foam of a certain density.
[0064] Please see Figure 3 The silencing cavity 130 is provided with multiple partitions 131 at intervals. The partitions 131 are integrally formed with the base of the silencing box 100.
[0065] A secondary silencing chamber 132 is formed between two adjacent partitions 131. After the gas flows through the intake chamber 110 to absorb noise, it then enters the corresponding secondary silencing chamber 132 for further noise reduction. Finally, the gas converges in the exhaust chamber 120, absorbs noise again, and then exits the silencing housing 100. The gas flow direction is as follows: Figure 3 China F Institute.
[0066] Each of the partitions 131 is provided with an air duct 1311, and the air ducts 1311 of adjacent partitions 131 are staggered. By staggering the air ducts 1311, the distance of the noise reduction path is increased, thereby improving the noise reduction effect.
[0067] Please see Figure 2 as well as Figure 3The silencer housing 100 has an air vent 140 extending through its center. By providing the air vent 140, the cooling fan 400 can effectively dissipate heat from the compressor 300 when the silencer housing 100 is subsequently installed on top of the compressor 300.
[0068] The number of silencing cavities 130 is two, and the two silencing cavities 130 are respectively arranged on both sides of the air guide 140. By setting two silencing cavities 130, the gas is diverted, reducing the total amount of gas impacting the silencing box 100, thereby reducing the noise generated during the impact.
[0069] Please see Figure 1 and Figure 2 In certain special circumstances, the oxygen concentrator needs to be used inside a vehicle. When the car is moving, the compressor 300 inside the oxygen concentrator shifts, causing collision noise. To reduce this noise, in this embodiment, the bottom of the silencer box 100 extends downward to form a limiting part 150; the bottom surface of the silencer box 100 and the side of the limiting part 150 form a limiting space 160, which limits the top of the external compressor 300.
[0070] The position of the compressor 300 is fixed by the silencer box 100, thereby preventing the compressor 300 from shifting. On the one hand, this reduces the impact caused by the shaking of the compressor 300 and reduces the impact noise. On the other hand, it prevents the compressor 300 pipeline from moving and reduces the noise generated by the gas colliding with the pipeline.
[0071] To improve the overall strength of the limiting part 150, in some embodiments, the cross-section of the limiting part 150 is shaped like a "π"; and multiple reinforcing ribs 151 are spaced apart on the side of the limiting part 150 away from the limiting space 160. On the one hand, the π-shaped structure is adapted to the shape of the top of the compressor 300; on the other hand, the π-shaped structure forms multiple support columns, further improving the overall strength of the limiting part 150 and enhancing its impact resistance.
[0072] In some embodiments, in order to reduce the noise generated by the compressor 300 impacting the limiting portion 150, a flexible damping layer is provided on the surface of the limiting portion 150.
[0073] Please see Figure 4 This disclosure provides an oxygen generator, including an oxygen adsorption tower 200, a compressor 300, and two silencers as described above. The silencers reduce noise during oxygen production by silencing the air intake of the compressor 300 and the nitrogen discharge of the oxygen adsorption tower 200.
[0074] Specifically, the air supply pipe 320 of the compressor 300 is connected to the oxygen adsorption tower 200; the air inlet pipe 310 of the compressor 300 is connected to the outside air through one of the silencers; and the nitrogen discharge pipe 210 of the oxygen adsorption tower 200 is connected to the outside air through another silencer.
[0075] Please continue reading. Figure 1 and Figure 4 The bottom of the silencer box 100 extends downward to form a limiting part 150; the bottom surface of the silencer box 100 and the side surface of the limiting part 150 form a limiting space 160, which limits the top of the compressor 300.
[0076] The position of the compressor 300 is fixed by the silencer box 100, thereby preventing the compressor 300 from shifting. On the one hand, this reduces the impact caused by the shaking of the compressor 300 and reduces the impact noise. On the other hand, it prevents the compressor 300 pipeline from moving and reduces the noise generated by the gas colliding with the pipeline.
[0077] The two silencer housings 100 are arranged side by side; the limiting portions 150 of the two silencer housings 100 are arranged opposite each other, and the top of the compressor 300 is located between the two limiting portions 150. Placing the silencer housings 100 on top of the compressor 300 makes the oxygen concentrator's structure more compact and further reduces its size.
[0078] Please continue reading. Figure 4 The air inlet 111 and the exhaust outlet 121 of the muffler body 100 are respectively disposed on the top surface and the bottom surface of the muffler body 100; or, the exhaust outlet 121 and the air inlet 111 of the muffler body 100 are respectively disposed on the top surface and the bottom surface of the muffler body 100.
[0079] It should be noted that the exhaust ports 121 of the two silencer housings 100 are located on the same horizontal plane; that is, the exhaust port 121 of one silencer housing 100 is located on the bottom surface of the silencer housing 100, and the exhaust port 121 of the other silencer housing 100 is also located on the bottom surface of the silencer housing 100. This reduces the amount of discharged nitrogen gas entering the compressor 300.
[0080] Please continue reading. Figure 1 The oxygen concentrator also includes two cooling fans 400; each of the silencer housings 100 has an air vent 140 penetrating through it in the middle; the cooling fans 400 are positioned above the corresponding silencer housings 100, and the air outlets of the cooling fans 400 are connected to the air vents 140. By integrating the air vents 140 into the silencer housings 100, the oxygen concentrator structure is made more compact, and the overall layout of the oxygen concentrator is optimized.
[0081] The number of the silencing cavities 130 is two; the two silencing cavities 130 are respectively arranged on both sides of the air guide 140.
[0082] This utility model provides a noise reduction device and an oxygen generator. The noise reduction device includes a noise reduction box 100. An air intake chamber 110 and an exhaust chamber 120 are disposed within the noise reduction box 100. A noise reduction chamber 130 is disposed between the air intake chamber 110 and the exhaust chamber 120. The air intake chamber 110 and the exhaust chamber 120 are respectively disposed on both sides of the noise reduction box 100 at intervals and are connected through the noise reduction chamber 130. The air intake chamber 110 is connected to the air inlet 111 of the noise reduction box 100, and the exhaust chamber 120 is connected to the exhaust outlet 121 of the noise reduction box 100. The air intake chamber 110, the exhaust chamber 120, and the noise reduction chamber 130 are all filled with noise-reducing material. By improving the noise reduction of compressed air intake and nitrogen exhaust, the gas absorbs noise in the intake chamber 110, then enters the noise reduction chamber 130 for further noise reduction, and finally converges in the exhaust chamber 120, absorbs noise again, and is discharged from the noise reduction box 100. By setting up a multi-stage noise reduction structure and increasing the distance of the noise reduction path, the noise reduction effect on the gas is improved, and the noise of the oxygen generator during operation is reduced.
[0083] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A noise reduction device, characterized in that, include: Silencer box (100); The muffler box (100) is provided with an air intake chamber (110) and an exhaust chamber (120), and a muffler chamber (130) is provided between the air intake chamber (110) and the exhaust chamber (120). The intake chamber (110) and the exhaust chamber (120) are respectively disposed on both sides of the muffler box (100) and are connected through the muffler chamber (130); The air intake chamber (110) is connected to the air intake port (111) of the muffler box (100), and the exhaust chamber (120) is connected to the exhaust port (121) of the muffler box (100). The air intake chamber (110), the exhaust chamber (120), and the silencing chamber (130) are all filled with silencing material.
2. The silencing device as described in claim 1, characterized in that, The silencing cavity (130) is provided with multiple partitions (131) at intervals. A secondary anechoic chamber (132) is formed between two adjacent partitions (131); Each of the partitions (131) is provided with an airway (1311), and the airways (1311) of two adjacent partitions (131) are staggered.
3. The silencing device as described in claim 1, characterized in that, The silencer box (100) has an air vent (140) that runs through the middle of the silencer box (100). The number of the silencing cavities (130) is two; The two silencing cavities (130) are respectively disposed on both sides of the air guide (140).
4. The silencing device as described in claim 1, characterized in that, The bottom of the silencing box (100) extends downward to form a limiting part (150). The bottom surface of the silencer box (100) and the side surface of the limiting part (150) form a limiting space (160) to limit the top of the external compressor (300).
5. The silencing device as described in claim 4, characterized in that, The cross-section of the limiting part (150) is "π" shaped; Furthermore, the limiting part (150) is provided with a plurality of reinforcing ribs (151) at intervals on the side away from the limiting space (160).
6. An oxygen generator, characterized in that, include: The oxygen-generating adsorption tower (200), the compressor (300), and two silencers as described in any one of claims 1-5; The air supply pipe (320) of the compressor (300) is connected to the oxygen adsorption tower (200); The intake pipe (310) of the compressor (300) is connected to the outside air through one of the silencers; The nitrogen discharge pipe (210) of the oxygen adsorption tower (200) is connected to the outside air through another silencer.
7. The oxygen generator as described in claim 6, characterized in that, The bottom of the silencing box (100) extends downward to form a limiting part (150). The bottom surface of the silencer box (100) and the side surface of the limiting part (150) form a limiting space (160) to limit the top of the compressor (300); The two silencer housings (100) are arranged side by side; The limiting portions (150) of the two silencer boxes (100) are arranged opposite to each other, and the top of the compressor (300) is disposed between the two limiting portions (150).
8. The oxygen generator as described in claim 7, characterized in that, The air inlet (111) and the exhaust outlet (121) of the silencer box (100) are respectively located on the top and bottom surfaces of the silencer box (100); Alternatively, the exhaust port (121) and the air inlet (111) of the muffler box (100) are respectively located on the top and bottom surfaces of the muffler box (100).
9. The oxygen generator as described in claim 7, characterized in that, The exhaust ports (121) of the two silencer boxes (100) are located on the same horizontal plane; That is, the exhaust port (121) of one of the muffler boxes (100) is located on the bottom surface of the muffler box (100), and the exhaust port (121) of the other muffler box (100) is also located on the bottom surface of the muffler box (100).
10. The oxygen generator as described in claim 6, characterized in that, The oxygen generator also includes two cooling fans (400). Each of the silencing boxes (100) has an air vent (140) that penetrates through the silencing box (100) in the middle. The cooling fan (400) is positioned above the corresponding soundproof box (100), and the air outlet of the cooling fan (400) is connected to the air guide (140). The number of the silencing cavities (130) is two; The two silencing cavities (130) are respectively disposed on both sides of the air guide (140).