Novel oxygenerator nitrogen discharge silencer

Abstract

The utility model relates to the technical field of silencers, in particular to a novel oxygenerator nitrogen discharge silencer which comprises a silencer shell, the silencer shell comprises an upper shell body and a lower shell body, and a connecting pipe is arranged at the top end of the upper shell body, communicated with the upper shell body and used for being connected with the air outlet end of an oxygenerator; the flow divider is fixed in the upper shell and communicates with the connecting pipe, a plurality of first flow dividing holes are distributed in the outer wall face of the flow divider, and a second flow dividing hole is formed in the end, away from the connecting pipe, of the flow divider; the silencing structure is arranged in the flow divider, one end of the silencing structure makes contact with the bottom face of the upper shell, the other end of the silencing structure makes contact with the bottom face of the flow divider, and when airflow passes through the silencing structure through the connecting pipe, the silencing structure deforms to consume sound energy. And the spring is compressed to deform, so that the sound energy is consumed, and the noise reduction effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mufflers, in particular to a novel nitrogen exhaust muffler for an oxygen generator. Background Art

[0002] Most existing silencers are made of porous materials, that is, they use porous materials (such as foam metal, glass fiber, etc.) to absorb sound wave energy and convert sound energy into heat energy to reduce noise. The principle is to fix the sound-absorbing material on the inner wall of the air flow channel or arrange it in a certain way in the pipe. Due to friction resistance and viscosity, the sound energy is converted into heat energy and then dissipated to achieve the purpose of noise reduction. However, due to its principle, porous material silencers are only suitable for reducing medium and high frequency noise, and cannot effectively deal with medium and low frequency noise, resulting in poor noise reduction effect. The internal material of most silencers is ordinary ABS plastic, the mechanical properties of which are greatly affected by temperature. Long-term gas impact is prone to deformation and damage.

[0003] Therefore, the present invention has developed a novel oxygen generator nitrogen exhaust silencer to solve the problems existing in the prior art. Utility Model Content

[0004] The purpose of the utility model is to provide a novel oxygen concentrator nitrogen exhaust muffler to solve the problems in the prior art where porous material mufflers have poor silencing effect on medium and low frequency noise and are easily deformed and damaged under the long-term impact of gas.

[0005] The technical solution of the utility model is: a new type of oxygen generator nitrogen exhaust muffler, comprising:

[0006] The muffler housing comprises an upper housing and a lower housing. A connecting pipe is provided at the top of the upper housing and is in communication with the upper housing for connecting to the outlet of the oxygen concentrator.

[0007] A flow divider is fixed in the upper shell and communicated with the connecting pipe. The outer wall of the flow divider is provided with a plurality of first flow diversion holes, and an end away from the connecting pipe is provided with a second flow diversion hole;

[0008] A silencer structure is arranged in the diverter, one end of the silencer structure contacts the bottom surface of the upper shell, and the other end contacts the bottom surface of the diverter. When the airflow passes through the connecting pipe and the silencer structure, the silencer structure deforms to consume sound energy.

[0009] Preferably, the silencer structure includes a sealing ring, a pair of fixing seats and a spring, the spring is located in the diverter, the pair of fixing seats are respectively located at both ends of the spring, a sealing ring is inserted into the fixing seat away from the upper shell, and one end of the spring away from the upper shell is sleeved on the sealing ring, and when the upper shell cover is placed on the lower shell, the spring is in a compressed state.

[0010] Preferably, a plurality of ventilation holes are provided on the bottom surface of the fixing seat, the ventilation holes of the fixing seat close to the upper shell are connected to the connecting pipe, and the ventilation holes of the fixing seat away from the upper shell are completely sealed by the sealing ring.

[0011] Preferably, the diameter of the connecting pipe is smaller than the inner diameter of the upper shell, so that when the gas enters the upper shell through the connecting pipe, the cross-sectional area of ​​the airflow increases.

[0012] Preferably, a pair of felts and a plurality of sponges are provided in the lower shell, and the plurality of sponges are arranged in sequence along the movement direction of the airflow and are arranged between the pair of felts. When the upper shell and the lower shell are connected, the fixing seat away from the upper shell is located in the felt away from the lower shell and abuts against each other.

[0013] Preferably, a cover sealing ring is provided on the inner wall surface of the lower shell, the cover sealing ring is sleeved on the felt or the sponge, and the outer diameter of the cover sealing ring matches the inner diameter of the lower shell.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) The gas enters the upper shell through the connecting pipe, and the cross-sectional area of ​​the gas suddenly changes from small to large, the flow rate of the gas changes, and the propagation characteristics of the sound wave are changed, thus achieving low noise elimination;

[0016] (2) When the gas enters the diverter, it exerts pressure on the diverter and compresses the spring, causing the spring to deform, thereby consuming sound energy and achieving the effect of noise reduction;

[0017] (3) After passing through the diverter, the gas passes through the felt and sponge, effectively processing the high-frequency noise and achieving the noise reduction function. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of an explosion of a novel oxygen concentrator nitrogen exhaust muffler according to the present invention;

[0020] Figure 2 This is an exploded cross-sectional view of a novel oxygen concentrator nitrogen exhaust muffler according to the utility model;

[0021] Figure 3 This is a schematic structural diagram of the assembled nitrogen exhaust muffler for a novel oxygen concentrator according to the utility model;

[0022] Figure 4 This is a cross-sectional view of the assembled nitrogen exhaust muffler for a novel oxygen concentrator according to the utility model;

[0023] Figure 5 This is a schematic diagram of the assembly structure of the fixing seat, sealing ring and spring of the utility model;

[0024] Figure 6 It is a top view of the fixing seat of the utility model.

[0025] Among them: 1. Muffler shell; 11. Upper shell; 12. Lower shell; 13. Connecting pipe; 2. Diverter; 21. First diverter hole; 22. Second diverter hole; 3. Muffler structure; 31. Sealing ring; 32. Fixing seat; 33. Spring; 34. Vent hole; 4. Felt; 5. Sponge; 6. Closing cover sealing ring. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0027] like Figure 1-Figure 3 As shown, a new type of oxygen concentrator nitrogen exhaust silencer includes a silencer shell 1, a diverter 2, and a silencer structure 3. The silencer shell 1 includes an upper shell 11 and a lower shell 12. The top of the upper shell 11 is provided with a connecting pipe 13 connected to the gas outlet end of the oxygen concentrator. The gas enters the upper shell 11 through the connecting pipe 13, and the diverter 2 is fixed in the upper shell 11 by screws and communicates with the connecting pipe 13. Therefore, the gas will enter the diverter 2. The diverter 2 is provided with a silencer structure 3. One end of the silencer structure 3 is connected to the upper shell The bottom surface of the body 11 is in contact with the other end thereof, and the bottom surface of the diverter 2 is in contact with the other end thereof. After the gas enters the diverter 2, it will exert pressure on the silencer structure 3, causing the silencer structure 3 to deform, so that the gas flows out through the first diverter hole 21 and the second diverter hole 22 respectively. Through the deformation of the silencer structure 3, the flow path and speed of the gas in the silencer can be optimized, thereby reducing the generation and propagation of noise. The deformation of the silencer structure 3 and the diverter 2 work in conjunction with each other, which can more effectively eliminate or weaken the noise generated by the gas flow.

[0028] Among them, the diameter of the connecting pipe 13 is smaller than the diameter of the upper shell 11. After the gas enters the upper shell 11 through the connecting pipe 13, the cross-sectional area of ​​the gas suddenly increases. At this time, the flow rate of the gas will decrease, thereby eliminating low-frequency noise. At the same time, when the gas enters the diverter 2 with a larger diameter, due to the larger diameter, it can accommodate more gas, making the airflow distribution more uniform, and can effectively reduce the vortex and turbulence of the airflow inside the muffler, thereby reducing the generation of noise.

[0029] In this embodiment, Figure 4As shown, the silencer structure 3 includes a sealing ring 31, a pair of fixing seats 32 and a spring 33. The spring 33 is arranged in the diverter 2, and the two ends of the spring 33 are respectively provided with fixing seats 32 for supporting the spring 33. A sealing ring 31 is inserted into the fixing seat 32 away from the upper shell 11, and one end of the corresponding spring 33 is sleeved on the sealing ring 31. When the upper shell 11 is covered on the lower shell 12, the spring 33 is in a compressed state. The compression of the spring 33 can balance the pressure fluctuations in the muffler and reduce the noise caused by the sudden change in pressure. In addition, the spring 33 in a compressed state can affect the diverter. 2, thereby reducing eddy currents and turbulence and reducing noise generation. At the same time, the compression state of the spring 33 can be used as an adjustable parameter to optimize the noise reduction performance of the muffler. By adjusting the compression degree of the spring 33, effective suppression of noises of different frequencies can be achieved. When the gas further compresses the spring 33, greater energy is consumed, resulting in more sound energy consumption, thereby achieving the purpose of reducing medium and low frequency noise. In the process of gas flow, the spring 33 can also play a role of buffering and vibration reduction, reducing the impact and vibration of the gas on the diverter 2 and other components.

[0030] Furthermore, if Figure 5-Figure 6 As shown, a plurality of vent holes 34 are provided on the fixing seat 32. The fixing seat 32 close to the upper shell 11 is connected to the connecting pipe 13, and a sealing ring 31 is not provided. When the gas passes through the connecting pipe 13, pressure is applied to the fixing seat 32 to compress the spring 33, and the vent holes 34 can divert the gas to prevent excessive pressure from causing the compression direction of the spring 33 to tilt, resulting in poor noise reduction effect on medium and low frequency noise. The vent holes 34 of the fixing seat 32 away from the upper shell 11 are sealed by the sealing ring 31 to prevent gas leakage.

[0031] In order to effectively reduce high-frequency noise, a felt 4 and a sponge 5 are provided in the lower shell 12. A plurality of sponges 5 are arranged in sequence along the direction of the airflow and between a pair of felts 4. The felt 4 and sponges 5 are porous materials that can effectively reduce high-frequency noise. When the upper shell 11 is covered on the lower shell 12, the gas flows out through the first diversion hole 21 through the felt 4 and sponge 5 for silencing. At this time, the gas also compresses the spring 33. The fixed seat 32 away from the upper shell 11 and the felt 4 away from the lower shell 12 abut against each other to support the spring 33, so that the spring 33 can produce a certain deformation in the direction of the airflow to consume sound energy.

[0032] In order to improve the sealing performance of the muffler, a cover sealing ring 6 is provided on the inner wall surface of the lower shell 12, and the cover sealing ring 6 is sleeved on the felt 4 or sponge 5. The outer diameter of the cover sealing ring 6 matches the inner diameter of the lower shell 12, so that the gas will not be discharged from the lower shell 12 through other paths, and can only be discharged from the lower shell 12 after passing through the felt 4 and sponge 5, thereby improving the noise reduction effect.

[0033] The implementation principle of this embodiment is as follows:

[0034] After the upper shell 11 and the lower shell 12 are fixed by screws, the internal spring 33 and sponge 5 are compressed, and the connecting pipe 13 is connected to the air outlet of the oxygen concentrator. The gas enters the upper shell 11. Due to the change in the cross-sectional area of ​​the gas, the low-frequency noise is consumed. Then the gas exerts pressure on the fixing seat 32, and the fixing seat 32 transmits the force to the spring 33 to compress the spring 33. In the process of the spring 33 being compressed, the sound energy is lost, thereby eliminating the medium and low-frequency noise. The gas flows out through the first diversion hole 21 and the second diversion hole 22. At the same time, the vent hole 34 on the fixing seat 32 also diverts the gas to prevent excessive pressure from causing the compression direction of the spring 33 to change. After passing through the first diversion hole 21 and the second diversion hole 22, the gas will pass through the felt 4 and sponge 5, thereby eliminating the high-frequency noise, and finally flow out from the hole at the bottom of the lower shell 12. The diverter 2 is made of POM material, which has high mechanical strength and rigidity and will not be deformed due to long-term gas impact and high temperature.

[0035] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they are not intended to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A new type of oxygen generator nitrogen exhaust silencer, characterized in that: include: A muffler housing (1), the muffler housing (1) comprising an upper housing (11) and a lower housing (12), a connecting pipe (13) being provided at the top end of the upper housing (11) and being in communication with the upper housing (11) for connecting to an outlet end of an oxygen concentrator; A flow divider (2) is fixed in the upper shell (11) and communicated with the connecting pipe (13); a plurality of first flow divider holes (21) are distributed on the outer wall of the flow divider (2); and a second flow divider hole (22) is provided at one end away from the connecting pipe (13); A silencer structure (3) is arranged in the diverter (2), one end of the silencer structure (3) contacts the bottom surface of the upper shell (11), and the other end contacts the bottom surface of the diverter (2). When the airflow passes through the connecting pipe (13) and the silencer structure (3), the silencer structure (3) deforms to consume sound energy.

2. A novel oxygen concentrator nitrogen exhaust muffler according to claim 1, characterized in that: The muffler structure (3) comprises a sealing ring (31), a pair of fixing seats (32) and a spring (33); the spring (33) is located in the diverter (2); the pair of fixing seats (32) are respectively located at two ends of the spring (33); a sealing ring (31) is inserted into the fixing seat (32) away from the upper shell (11); one end of the spring (33) away from the upper shell (11) is sleeved on the sealing ring (31); when the upper shell (11) is covered on the lower shell (12), the spring (33) is in a compressed state.

3. A novel oxygen concentrator nitrogen exhaust muffler according to claim 2, characterized in that: The bottom surface of the fixing seat (32) is provided with a plurality of vent holes (34). The vent holes (34) of the fixing seat (32) close to the upper shell (11) are communicated with the connecting pipe (13), and the vent holes (34) of the fixing seat (32) away from the upper shell (11) are completely sealed by the sealing ring (31).

4. A novel oxygen concentrator nitrogen exhaust muffler according to claim 1, characterized in that: The diameter of the connecting pipe (13) is smaller than the inner diameter of the upper shell (11), and when the gas enters the upper shell (11) through the connecting pipe (13), the cross-sectional area of ​​the air flow increases.

5. The novel oxygen concentrator nitrogen exhaust silencer according to claim 2 is characterized in that: A pair of felts (4) and a plurality of sponges (5) are provided in the lower shell (12). The plurality of sponges (5) are arranged in sequence along the direction of movement of the airflow and are arranged between the pair of felts (4). When the upper shell (11) and the lower shell (12) are connected, the fixing seat (32) away from the upper shell (11) is located in the felt (4) away from the lower shell (12) and abuts against each other.

6. The novel oxygen concentrator nitrogen exhaust silencer according to claim 5 is characterized by: A cover sealing ring (6) is provided on the inner wall surface of the lower shell (12). The cover sealing ring (6) is sleeved on the felt (4) or the sponge (5), and the outer diameter of the cover sealing ring (6) matches the inner diameter of the lower shell (12).

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