A domestic oxygen generator exhaust silencer

Abstract

The utility model relates to the technical field of silencer, especially a kind of household oxygen generator exhaust silencer.It is characterized in that, first interface, second interface are arranged in upper end cover, first interface is connected with air inlet and makes the one end of air inlet to be arranged in cavity, so that the other end of air inlet is arranged outside upper end cover, second interface is connected with silencer pipe and makes the one end of silencer pipe to be arranged in cavity, so that the other end of silencer pipe is arranged outside upper end cover, the end of air inlet in cavity is connected with copper sintered filter element silencer, the end of silencer pipe outside upper end cover is connected with copper sintered filter element silencer.The beneficial effect is that: gas is first silenced by copper sintered filter element silencer connected with the end of air inlet in cavity, then is secondly silenced by silencer pipe, and finally is thirdly silenced by copper sintered filter element silencer connected with the end of silencer pipe outside upper end cover, to achieve the purpose of silencing and noise reduction.

Description

Technical Field

[0001] This utility model relates to the field of silencer technology, and in particular to a silencer for the exhaust of a household oxygen concentrator. Background Technology

[0002] Existing home oxygen concentrators produce a lot of noise when emitting nitrogen. This is due to the sound-absorbing materials and structure used in their silencers. For example, utility model patent CN217927299U discloses a novel pneumatic reversing valve for oxygen concentrators. This valve uses a substrate filler within the diaphragm cavity to reduce the noise of gas flow. It reveals that the substrate filler uses materials such as sponge, slotted wood sound-absorbing panels, and honeycomb ceramics with fine porous structures to filter and silence the high-pressure gas.

[0003] Although this type of substrate filler can improve the noise of gas flow, with long-term use of the oxygen concentrator, the fine pore structure of the substrate filler can become clogged with dust, causing poor airflow, overheating, unstable discharge, and increased pressure in the home oxygen concentrator. Therefore, an exhaust silencer for home oxygen concentrators is proposed. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a silencer for the exhaust of a household oxygen concentrator.

[0005] To overcome the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] The device includes a housing, an upper cover connected to one end of the housing, and a lower cover connected to the other end of the housing. A cavity is formed between the housing, the upper cover, and the lower cover. The upper cover is characterized by having a first interface and a second interface. The first interface is connected to an air intake interface, with one end of the air intake interface located inside the cavity and the other end located outside the upper cover. The second interface is connected to a muffler, with one end of the muffler located inside the cavity and the other end located outside the upper cover. The end of the air intake interface located inside the cavity is connected to a copper sintered filter muffler, and the end of the muffler located outside the upper cover is connected to a copper sintered filter muffler.

[0007] Compared with the prior art, the beneficial effects of this utility model are: the gas is first silenced by the copper sintered filter element silencer connected to the end of the air inlet in the cavity, then it is silenced by the silencer pipe, and finally it is silenced by the copper sintered filter element silencer connected to the end of the silencer pipe located outside the upper cover, thus achieving the purpose of noise reduction.

[0008] By setting a curved radius on the silencer tube, the gas is made to generate friction resistance, which reduces the gas flow rate and thus the gas noise. The curved radius changes the gas flow rate, balances the pressure in the cavity, and ensures the gas concentration in the cavity, thereby achieving the purpose of noise reduction.

[0009] The shell is made of aluminum, which has a high specific heat capacity, making it lighter for the same volume. This facilitates heat dissipation and ensures that the home oxygen concentrator will not overheat, have unstable output, or increase pressure during long-term use. Attached Figure Description

[0010] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0011] Figure 1 This is the front view of this utility model.

[0012] Figure 2 yes Figure 1 Top view.

[0013] Figure 3 yes Figure 1 The left view.

[0014] Figure 4 yes Figure 1 The cross-sectional view shown along line AA.

[0015] Figure 5 yes Figure 3 The cross-sectional view shown along line BB.

[0016] Explanation of reference numerals in the attached figures:

[0017] 1. Upper end cover; 2. Housing; 3. Lower end cover; 4. Air inlet; 5. Copper sintered filter element silencer; 6. Silencing pipe; 7. Cavity; 8. Pattern; 101. First interface; 102. Second interface; 601. Curved rounded corner; Detailed Implementation

[0018] like Figure 1-5 As shown, a silencer for the exhaust of a home oxygen concentrator is disclosed. Figure 1 It can be seen that the enclosure includes a shell 2, an upper end cover 1 connected to one end of the shell 2, and a lower end cover 3 connected to the other end of the shell 2. A cavity 7 is formed between the shell 2, the upper end cover 1, and the lower end cover 3. The cavity 7 is as follows: Figure 4 , Figure 5 As shown; Figure 2 As shown, the upper cover 1 is provided with a first interface 101 and a second interface 102, as follows: Figures 3-5As shown, the first interface 101 is connected to the air intake interface 4, with one end of the air intake interface 4 located inside the cavity 7 and the other end located outside the upper cover 1. The second interface 102 is connected to the muffler pipe 6, with one end of the muffler pipe 6 located inside the cavity 7 and the other end located outside the upper cover 1. The end of the air intake interface 4 located inside the cavity 7 is connected to the copper sintered filter element muffler 5, and the end of the muffler pipe 6 located outside the upper cover 1 is connected to the copper sintered filter element muffler 5.

[0019] When used in a home oxygen concentrator, gas enters the cavity 7 through the air inlet 4. After passing through the copper sintered filter silencer 5 connected to the end of the air inlet 4 inside the cavity 7, the gas undergoes primary noise reduction by passing through the copper sintered filter silencer 5, thus reducing the noise of the gas flow. Then, the gas inside the cavity undergoes secondary noise reduction by passing through the silencer pipe 6. Finally, the gas undergoes tertiary noise reduction by passing through the copper sintered filter silencer 5 connected to the end of the silencer pipe 6 located outside the upper cover 1, thus achieving the purpose of noise reduction.

[0020] Furthermore, it should be noted that the silencer pipe 6 is provided with a curved fillet 601. The presence of the curved fillet 601 can generate friction resistance along the gas flow path, and while reducing the gas flow rate, it also reduces the noise of the gas. The curved fillet 601, while changing the gas flow rate, can also balance the pressure in the cavity and ensure the gas concentration in the cavity 7, thereby achieving the purpose of silencing and reducing noise. Preferably, the number of curved fillets 601 is ≥1.

[0021] Furthermore, the shell 2 is made of aluminum, which has a specific heat capacity of 900 kJ / kg·K, resulting in stronger heat absorption capacity. It can store more heat before releasing it, preventing localized overheating. Simultaneously, its low density makes it lighter for the same volume, facilitating heat dissipation and thus balancing heat absorption and dissipation in the shell 2. Consequently, even with long-term use, the home oxygen concentrator will not experience overheating, unstable output, or increased pressure.

[0022] Furthermore, the upper cover 1 is made of PA6, and the outer surface of the upper cover 1 is provided with raised patterns 8. The patterns 8 allow heat dissipation at the connection between the upper cover 1 and the shell 2, while the PA6 material makes the upper cover lighter.

[0023] Furthermore, the lower end cover 3 is made of PA6, and the outer surface of the lower end cover 3 is provided with raised patterns 8. The patterns 8 allow heat dissipation at the connection between the lower end cover 3 and the housing 2, while the PA6 material makes the upper end cover lighter.

[0024] Furthermore, one end of the housing 2 is detachably connected to the upper cover 1. Preferably, the detachable connection is a threaded connection. As can be seen from the raised pattern 8 on the outer wall surface of the upper cover 1, the pattern 8 not only allows heat dissipation at the connection between the upper cover 1 and the housing 2, but also increases the friction between the upper cover 1 and the hand when installing or removing it, making installation and removal convenient. This also facilitates cleaning the dust accumulated inside the cavity 7 and replacing the copper sintered filter element silencer 5.

[0025] Furthermore, the other end of the housing 2 is detachably connected to the lower end cover 3, preferably by a threaded connection. Similarly, the pattern 8 facilitates the installation and removal of the lower end cover 3 from the housing 2. This also facilitates cleaning accumulated dust inside the cavity 7 and replacing the copper sintered filter element silencer 5.

[0026] This invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A silencer for a household oxygen concentrator, comprising a housing (2), an upper end cover (1) connected to one end of the housing (2), and a lower end cover (3) connected to the other end of the housing (2), wherein a cavity (7) is formed between the housing (2), the upper end cover (1), and the lower end cover (3), characterized in that, The upper cover (1) is provided with a first interface (101) and a second interface (102). The first interface (101) is connected to the air inlet (4) and one end of the air inlet (4) is located inside the cavity (7), while the other end of the air inlet (4) is located outside the upper cover (1). The second interface (102) is connected to the muffler (6) and one end of the muffler (6) is located inside the cavity (7), while the other end of the muffler (6) is located outside the upper cover (1). The end of the air inlet (4) located inside the cavity (7) is connected to the copper sintered filter element muffler (5), and the end of the muffler (6) located outside the upper cover (1) is connected to the copper sintered filter element muffler (5).

2. The exhaust silencer for a household oxygen concentrator according to claim 1, characterized in that, The silencer tube (6) is provided with a curved rounded corner (601).

3. The exhaust silencer for a household oxygen concentrator according to claim 2, characterized in that, The number of the curved fillets (601) is ≥1.

4. The exhaust silencer for a household oxygen concentrator according to claim 1, characterized in that, The shell (2) is made of aluminum.

5. The exhaust silencer for a household oxygen concentrator according to claim 1, characterized in that, The upper cover (1) is made of PA6, and the outer wall surface of the upper cover (1) is provided with raised patterns (8).

6. The exhaust silencer for a household oxygen concentrator according to claim 1, characterized in that, The lower end cover (3) is made of PA6, and the outer wall surface of the lower end cover (3) is provided with raised patterns (8).

7. The exhaust silencer for a household oxygen concentrator according to claim 1, characterized in that, The housing (2) is detachably connected to the upper cover (1) at one end.

8. The exhaust silencer for a household oxygen concentrator according to claim 1, characterized in that, The other end of the housing (2) is detachably connected to the lower end cover (3).

9. A household oxygen concentrator exhaust silencer according to claim 7, characterized in that, The detachable connection method is a threaded connection.

10. A silencer for exhaust gas from a household oxygen concentrator according to claim 8, characterized in that, The detachable connection method is a threaded connection.

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