Noise reduction structure and oxygen generator comprising same

Abstract

The noise reduction structure comprises a first cover and a second cover, a first protruding part is arranged on the surface of the first cover, a second protruding part is arranged on the surface of the second cover, and when the first cover and the second cover are connected, the first protruding part and the second protruding part are arranged on the surface of the first cover. A part of the first protruding part is matched with the second protruding part to limit displacement of the first cover and the second cover, and the second protruding part abuts against the surface of the first cover. The noise reduction structure composed of the first cover and the second cover is additionally arranged, the second cover of the noise reduction structure can be detachably or fixedly connected with the air suction port of the compressor, noise is further reduced on the basis of traditional noise reduction, and the influence on the surrounding environment is reduced. The first cover and the second cover are provided with a first protruding part and a second protruding part respectively, when the first cover and the second cover are combined, an air channel is formed in the inner space, a groove hole is formed for mutual communication, and then air enters the hollow bolt through the air inlet hole to reach the compressor, so that the silencing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen generators, in particular to a noise reduction structure and an oxygen generator including the structure. Background Art

[0002] An oxygen generator is a kind of machine for producing oxygen. Its principle is to use air separation technology, molecular sieve pressure swing adsorption technology and other methods to prepare oxygen. Oxygen generators are also widely used in the national economy, especially in industries such as metallurgy, chemical industry, petroleum, and national defense.

[0003] When preparing oxygen by the method of molecular sieve pressure swing adsorption technology, since the compressor of the traditional oxygen generator generates a lot of noise due to air flow disturbance during operation, the original way to solve the noise problem was to install sealing rubber around the plate body of the sealing cover to control the air flow within the space enclosed by the sealing rubber, but the noise reduction effect was still not ideal, and relatively large noise would still be generated. Content of the Utility Model

[0004] Aiming at the above-mentioned shortcomings of the prior art, the purpose of the present utility model is to provide a noise reduction structure and an oxygen generator including the structure to solve one or more problems in the prior art.

[0005] To achieve the above purpose, the technical solution of the present utility model is as follows:

[0006] A noise reduction structure, the noise reduction structure includes a first cover and a second cover. A first protrusion is provided on the surface of the first cover, and a second protrusion and an air inlet hole are provided on the surface of the second cover. When the first cover and the second cover are connected, a part of the first protrusion cooperates with the second protrusion to limit the displacement of the first cover and the second cover. The second protrusion abuts against the surface of the first cover, and the first protrusion abuts against the surface of the second cover.

[0007] Further, the first protrusion includes a first protrusion and a second protrusion. The first protrusion and the second protrusion are formed in an arc shape and a gap is formed therebetween; a part of the second protrusion extends to the edge of the first cover.

[0008] Further, the second protrusion includes a third protrusion, a fourth protrusion, a fifth protrusion, a sixth protrusion and a seventh protrusion. The fourth protrusion, the fifth protrusion and the sixth protrusion are all connected to the third protrusion; the air inlet hole includes a first hole.

[0009] Furthermore, the fourth protrusion, the fifth protrusion, and the sixth protrusion are all formed in an arc shape, and the fourth protrusion is arranged along the edge of the second cover, and the seventh protrusion is formed in a ring shape; gaps are formed between the fourth protrusion, the fifth protrusion, the sixth protrusion, and the seventh protrusion; the fifth protrusion is fitted into the gap between the first protrusion and the second protrusion to limit the horizontal displacement of the first cover and the second cover.

[0010] Furthermore, the fourth protrusion, the fifth protrusion, the sixth protrusion, and the seventh protrusion are respectively provided with a first groove, a second groove, a third groove, and a fourth groove; the first groove, the second groove, the third groove, and the fourth groove are all arranged offset from the center of the second cover.

[0011] Furthermore, the first groove is fitted to a part of the second protrusion to limit the rotation of the first cover relative to the second cover.

[0012] Furthermore, the first protruding portion includes an eighth protrusion, a ninth protrusion, a tenth protrusion, and an eleventh protrusion. The eighth protrusion, the ninth protrusion, and the tenth protrusion are all formed in an arc shape and gaps are formed therebetween. The eleventh protrusion is formed in a ring shape and a gap is formed between the eleventh protrusion and the tenth protrusion; the eighth protrusion, the ninth protrusion, and the tenth protrusion are respectively provided with a fifth groove, a sixth groove, and a seventh groove.

[0013] Furthermore, the second protruding portion includes a twelfth protrusion and a thirteenth protrusion. The thirteenth protrusion is arranged along the edge of the second cover and is connected to the twelfth protrusion. The thirteenth protrusion is provided with a ninth groove; the air inlet hole includes a second hole.

[0014] An oxygen generator, the oxygen generator includes the above noise reduction structure. The oxygen generator includes a compressor, a base, a cover plate, and a hollow bolt. The compressor is connected to the base through the hollow bolt. The second cover is detachable or fixable to the base. The cover plate is detachably fitted to the base. The area of the first cover is smaller than the area of the second cover. The cover plate is also fitted to the first cover and the second cover.

[0015] Furthermore, the compressor includes an air inlet, and the air inlet is fitted to the first hole or the second hole and the hollow bolt.

[0016] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0017] A noise reduction structure composed of the first cover and the second cover is added. The second cover of the noise reduction structure can be detachably or fixedly connected to the compressor air inlet, further reducing noise on the basis of traditional noise reduction and reducing the impact on the surrounding environment. The first cover and the second cover are respectively provided with a first convex portion and a second convex portion. When the first cover and the second cover are combined, an air passage is formed in the internal space and the slot holes are communicated with each other, and then through the air inlet hole to the hollow bolt and then to the compressor to achieve the sound absorption effect; an air inlet hole is opened in the center of the second cover, which is convenient for air intake and is convenient for screwing the hollow bolt to disassemble the compressor when the second cover is fixed relative to the base, facilitating maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. shows a schematic structural diagram of a noise reduction structure according to Embodiment 1 of the present invention and an oxygen generator including the structure. Figure Ⅰ .

[0019] Figure 2 FIG. shows a schematic structural diagram of a noise reduction structure according to Embodiment 1 of the present invention and an oxygen generator including the structure. Figure Ⅱ .

[0020] Figure 3 FIG. shows a cross-sectional view of a noise reduction structure according to Embodiment 1 of the present invention and an oxygen generator including the structure in the A-A direction.

[0021] Figure 4 FIG. shows a schematic structural diagram of the first cover of a noise reduction structure according to Embodiment 1 of the present invention and an oxygen generator including the structure.

[0022] Figure 5 FIG. shows a schematic structural diagram of the second cover of a noise reduction structure according to Embodiment 1 of the present invention and an oxygen generator including the structure.

[0023] Figure 6 FIG. shows a schematic structural diagram of an oxygen generator including a noise reduction structure according to Embodiment 1 of the present invention. Figure Ⅲ .

[0024] Figure 7 FIG. shows a schematic structural diagram of an oxygen generator without a cover plate including a noise reduction structure according to Embodiment 1 of the present invention.

[0025] Figure 8 FIG. shows a schematic structural diagram of the assembly of the second cover and the air inlet of an oxygen generator including a noise reduction structure according to Embodiment 2 of the present invention.

[0026] Figure 9 FIG. shows a schematic structural diagram of an oxygen generator including a noise reduction structure according to Embodiments 1 and 2 of the present invention.

[0027] Figure 10 It shows a schematic cross-sectional structure diagram in the B-B direction of a noise reduction structure of the second embodiment of the present utility model and an oxygen generator including this structure.

[0028] Figure 11 It shows a schematic structure diagram of a noise reduction structure of the second embodiment of the present utility model and the first cover of an oxygen generator including this structure.

[0029] Reference signs in the drawings: 1. First cover; 101. First protrusion; 102. Second protrusion; 103. Eighth protrusion; 1031. Fifth groove; 104. Ninth protrusion; 1041. Sixth groove; 105. Tenth protrusion; 1051. Seventh groove; 106. Eleventh protrusion; 2. Second cover; 201. Third protrusion; 202. Fourth protrusion; 2021. First groove; 203. Fifth protrusion; 2031. Second groove; 204. Sixth protrusion; 2041. Third groove; 205. Seventh protrusion; 2051. Fourth groove; 206. First hole; 207. Twelfth protrusion; 208. Thirteenth protrusion; 2081. Ninth groove; 209. Second hole; 3. Compressor; 4. Base; 5. Cover plate; 6. Air inlet; 7. Hollow bolt. Detailed implementation manners

[0030] In order to make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the following further elaborates in detail on a noise reduction structure proposed by the present utility model and an oxygen generator including this structure in combination with the accompanying drawings and specific implementation manners. According to the following description, the advantages and features of the present utility model will be clearer. It should be noted that the drawings adopt a very simplified form and all use non-precise scales. The orientation or positional relationship indicated by terms such as "center", "lateral", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", etc. is based on the orientation or positional relationship shown in the drawings, rather than indicating or implying that a noise reduction structure and an oxygen generator or component including this structure must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model, and is only used to conveniently and clearly assist in explaining the purpose of the implementation manner of the present utility model. In order to make the purpose, features and advantages of the present utility model more obvious and understandable, please refer to the accompanying drawings.

[0031] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model.

[0032] Embodiment 1

[0033] The following describes the specific structure of a noise reduction structure and an oxygen generator including this structure:

[0034] Please refer to Figure 1 , the noise reduction structure for an oxygen generator in this embodiment, the noise reduction structure includes a first cover 1 and a second cover 2, the area of the first cover 1 is smaller than the area of the second cover 2. Preferably, in this embodiment, the second cover 2 is circular, and the first cover 1 is two-thirds of the circular area of the second cover 2 to facilitate multiple noise reduction effects in cooperation with the cover plate 5.

[0035] Please continue to refer to Figure 4 and Figure 5 , a first protrusion is provided on the surface of the first cover 1, the first protrusion includes a first protrusion 101 and a second protrusion 102, the first protrusion 101 and the second protrusion 102 are formed into an arc shape with the center of the first cover 1 and a uniform gap is formed between them, and a part of the second protrusion 102 extends to the edge of the first cover 1.

[0036] Furthermore, a second protrusion is provided on the surface of the second cover 2, the second protrusion includes a third protrusion 201, a fourth protrusion 202, a fifth protrusion 203, a sixth protrusion 204, and a seventh protrusion 205. The fourth protrusion 202, the fifth protrusion 203, and the sixth protrusion 204 are all connected to the third protrusion 201 and are arranged in sequence.

[0037] Furthermore, the fourth protrusion 202, the fifth protrusion 203, and the sixth protrusion 204 are all formed into an arc shape and the fourth protrusion 202 is arranged along the edge of the second cover 2, the seventh protrusion 205 is formed into a ring shape, and gaps are formed between the fourth protrusion 202, the fifth protrusion 203, the sixth protrusion 204, and the seventh protrusion 205.

[0038] Furthermore, a first hole 206 is opened at the center of the second cover 2, the first hole 206 is located inside the seventh protrusion 205, and the first hole 206 cooperates with the air inlet 6 and at the same time facilitates tightening or loosening bolts for the compressor 3 for maintenance.

[0039] Please continue to refer to Figures 2 to 5, at least one first groove 2021, second groove 2031, third groove 2041 and fourth groove 2051 are respectively provided on the fourth protrusion 202, fifth protrusion 203, sixth protrusion 204 and seventh protrusion 205. The first groove 2021, second groove 2031, third groove 2041 and fourth groove 2051 are all arranged offset from the center of the second cover 2 and are not collinear with the center line connecting the centers of the second cover 2, so as to achieve a better noise reduction effect.

[0040] Further, when the first cover 1 and the second cover 2 are connected, the second protrusion abuts against the surface of the first cover 1. The fifth protrusion 203 is fitted into the gap between the first protrusion 101 and the second protrusion 102 to limit the horizontal displacement of the first cover 1 and the second cover 2. The first groove 2021 is fitted into the part of the second protrusion 102 extending to the edge of the first cover 1 to limit the rotation of the first cover 1 relative to the second cover 2.

[0041] Please continue to refer to Figure 6 , Figure 7 , Figure 9 , an oxygen generator according to this embodiment, the oxygen generator includes the above noise reduction structure, the oxygen generator includes a compressor 3, a base 4, a cover plate 5 and a hollow bolt 7. The compressor 3 is connected to the base 4 through the hollow bolt 7. In this embodiment, the first cover 1 and the second cover 2 are preferably made of rubber material. The second cover 2 is detachably arranged relative to the base 4. The cover plate 5 is detachably fitted to the base 4. The edge of the cover plate 5 is also fitted to the part of the first cover 1 and the second cover 2 where the area of the first cover 1 is smaller than that of the second cover 2 and is embedded in the first cover 1.

[0042] Further, the compressor 3 includes an air inlet 6. The air inlet 6 is fitted to the first hole 206 and the hollow bolt 7. The user can process the hollow bolt 7 through the first hole 206 and the air inlet 6 to realize the connection or separation of the compressor 3 relative to the base 4.

[0043] The following describes the specific working process of a noise reduction structure and an oxygen generator including this structure according to Embodiment 1 of the present invention as follows:

[0044] Align the other side of the second cover 2 of the noise reduction structure, where the second protrusion is provided, with the air inlet 6 of the compressor 3 to ensure that the first hole 206 is concentric with the air inlet 6. The gas enters the air passage formed by the second protrusion and the first cover 1 through the first groove 2021, and successively flows through the first groove 2021, the second groove 2031, the third groove 2041, and the fourth groove 2051 to reach the first hole 206, and then is inhaled through the air inlet 6 of the compressor 3 and then through the hollow bolt 7 to produce oxygen. By setting the noise reduction structure, noise reduction treatment is further increased on the basis of traditional noise reduction and filtration, reducing the impact of the oxygen generator on the surrounding environment during operation.

[0045] Embodiment 2

[0046] This Embodiment 2 is only different from Embodiment 1 in the structures of the first protrusion, the second protrusion, and the air inlet hole, and the rest of the structures are the same.

[0047] Please continue to refer to Figures 8 to 11 , further, the first protrusion includes an eighth protrusion 103, a ninth protrusion 104, a tenth protrusion 105, and an eleventh protrusion 106. The eighth protrusion 103, the ninth protrusion 104, and the tenth protrusion 105 are all formed in an arc shape with the center of the first cover 1 as the center and form gaps therebetween. The eleventh protrusion 106 is formed in a ring shape with the center of the first cover 1 as the center and forms a gap with the tenth protrusion 105. The eighth protrusion 103, the ninth protrusion 104, and the tenth protrusion 105 are respectively provided with a fifth groove 1031, a sixth groove 1041, and a seventh groove 1051. The fifth groove 1031, the sixth groove 1041, and the seventh groove 1051 are all arranged offset from the center of the first cover 1 and are not collinear with the center line of the first cover 1 to achieve a better noise reduction effect.

[0048] Further, the second protrusion includes a twelfth protrusion 207 and a thirteenth protrusion 208. The thirteenth protrusion 208 is arranged along the edge of the second cover 2 and is connected to the twelfth protrusion 207. The thirteenth protrusion 208 is provided with a ninth groove 2081. The air inlet hole includes a second hole 209. In this embodiment, the first cover 1 is preferably made of rubber material, and the second cover 2 is fixedly connected to the base 4.

[0049] The following describes the specific working process of the noise reduction structure and the oxygen generator including this structure according to Embodiment 2 of the present invention as follows:

[0050] Align the other surface of the second protrusion provided on the second cover 2 of the noise reduction structure with the air inlet 6 of the compressor 3 to ensure that the second hole 209 is concentric with the air inlet 6. The gas enters the air passage formed by the second protrusion and the first cover 1 through the first groove 2021, and successively flows through the ninth groove 2081, the fifth groove 1031, the sixth groove 1041, and the seventh groove 1051 to reach the second hole 209, and then is inhaled through the air inlet 6 of the compressor 3 and then through the hollow bolt 7 to produce oxygen. By setting the noise reduction structure, noise reduction treatment is further increased on the basis of traditional noise reduction and filtration, reducing the impact of the oxygen generator on the surrounding environment during operation.

[0051] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0052] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A noise reduction structure, characterized in that: The noise reduction structure includes a first cover and a second cover, the first cover surface is provided with a first protrusion, the second cover surface is provided with a second protrusion and an air inlet hole, when the first cover and the second cover are connected, a part of the first protrusion cooperates with the second protrusion to limit the displacement of the first cover and the second cover, the second protrusion abuts against the surface of the first cover, and the first protrusion abuts against the surface of the second cover.

2. A noise reduction structure according to claim 1, characterized in that: The first protrusion includes a first protrusion and a second protrusion, the first protrusion and the second protrusion are formed in an arc shape with a gap formed therebetween; a portion of the second protrusion extends to the edge of the first cover.

3. A noise reduction structure according to claim 2, characterized in that: The second protrusion includes a third protrusion, a fourth protrusion, a fifth protrusion, a sixth protrusion and a seventh protrusion, and the fourth protrusion, the fifth protrusion and the sixth protrusion are all connected to the third protrusion; the air inlet includes a first hole.

4. A noise reduction structure according to claim 3, characterized in that: The fourth protrusion, the fifth protrusion and the sixth protrusion are all formed in an arc shape and the fourth protrusion is arranged along the edge of the second cover, and the seventh protrusion is formed in a ring shape; gaps are formed between the fourth protrusion, the fifth protrusion, the sixth protrusion and the seventh protrusion; the fifth protrusion cooperates with the gap between the first protrusion and the second protrusion to limit the horizontal displacement of the first cover and the second cover.

5. A noise reduction structure according to claim 4, characterized in that: The fourth protrusion, the fifth protrusion, the sixth protrusion and the seventh protrusion are respectively provided with a first groove, a second groove, a third groove and a fourth groove; the first groove, the second groove, the third groove and the fourth groove are all staggered with respect to the center of the second cover.

6. A noise reduction structure according to claim 5, characterized in that: The first groove is engaged with a portion of the second protrusion to limit rotation of the first cover relative to the second cover.

7. A noise reduction structure according to claim 1, characterized in that: The first protrusion includes an eighth protrusion, a ninth protrusion, a tenth protrusion and an eleventh protrusion, the eighth protrusion, the ninth protrusion and the tenth protrusion are all formed into arc shapes and gaps are formed between them, the eleventh protrusion is formed into a ring shape and a gap is formed between it and the tenth protrusion; the eighth protrusion, the ninth protrusion and the tenth protrusion respectively have a fifth groove, a sixth groove and a seventh groove.

8. A noise reduction structure according to claim 7, characterized in that: The second protrusion includes a twelfth protrusion and a thirteenth protrusion, the thirteenth protrusion is arranged along the edge of the second cover and connected to the twelfth protrusion, and the thirteenth protrusion defines a ninth groove; the air inlet includes a second hole.

9. An oxygen concentrator, comprising a noise reduction structure as described in any one of claims 1 to 8, the oxygen concentrator comprising a compressor, a base, a cover plate and a hollow bolt, the compressor is connected to the base via the hollow bolt, the second cover is detachable or fixable to the base, the cover plate is detachably matched to the base, the area of ​​the first cover is smaller than the area of ​​the second cover, and the cover plate is also matched to the first cover and the second cover.

10. An oxygen concentrator according to claim 9, characterized in that: The compressor includes an air intake port, and the air intake port is matched with the first hole or the second hole and the hollow bolt.

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