Exhaust silencing box

Abstract

The utility model relates to the technical field of oxygenerator noise reduction boxes, and discloses an exhaust noise reduction box which comprises a box body and a box cover which are fixed together, a plurality of noise reduction cavities are arranged in an inner cavity of the box body, the noise reduction cavities are communicated through communicating pipes, every two communicating pipes are arranged in a staggered mode, and the box cover is arranged on the box body. A main air inlet and an air outlet are formed in the same side of the box body, the main air inlet is communicated with the silencing cavity farthest from the main air inlet through an air inlet channel, the silencing cavity farthest from the air outlet is communicated with the air outlet through an air outlet channel, and the silencing cavities are filled with silencing blocks. The silencing cavity is matched with the communicating pipe to form the snakelike exhaust channel, the stroke of gas in the box body is prolonged, and the silencing block arranged in the silencing cavity is matched, so that noise generated by vortex formed in the silencing cavity and airflow impacting the cavity wall in the exhaust process is effectively weakened or avoided; and therefore, the silencing and noise reduction capability of the whole silencing box is integrally improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oxygen generator silencer box technical field, concretely is a exhaust silencer box. BACKGROUND

[0002] Oxygen generator mostly adopts molecular sieve separation nitrogen oxygen, and when the compressor works, the air inlet and exhaust are easy to produce larger noise, when the user oxygen therapy or oxygen health care, cannot provide quiet, comfortable use environment, the existing oxygen generator carries out oxygen production work, and nitrogen is discharged synchronously, and larger noise is produced in the process of discharging nitrogen, which can affect the patient in the room, so it is necessary to be equipped with nitrogen exhaust silencing device, but the current nitrogen exhaust silencing device mainly absorbs the noise of airflow impact or vortex formation in the nitrogen discharge process through silencing cotton, but the silencing effect is limited, and it is difficult to meet the low noise demand under part application occasion. SUMMARY

[0003] (I) technical problem solved

[0004] In view of the deficiencies of prior art, the utility model provides an exhaust silencer box, solves the problem that the overall silencing and noise reduction effect is not obvious in the process of discharging nitrogen of the existing separation nitrogen oxygen type oxygen generator due to the limitation of traditional silencer box structure design and silencing measures, and it is difficult to meet the low noise demand under part application scene.

[0005] (II) technical scheme

[0006] In order to realize the above object, the utility model realizes through the following technical scheme:

[0007] An exhaust silencer box, comprising a box body and a box cover fixed together, a plurality of silencing cavities are arranged in the box body inner chamber, the silencing cavities are all communicated through the communication pipe, the communication pipes are staggered arranged between two, the same side of the box body is respectively provided with a main air inlet and an air outlet, the main air inlet is communicated with the silencing cavity farthest from the main air inlet through the air inlet channel, and the silencing cavity farthest from the air outlet is communicated with the air outlet through the air outlet channel, and the silencing cavities are all filled with silencing blocks.

[0008] Preferably, the edge of the upper end surface of the box body is symmetrically arranged with a plurality of positioning pieces, and the upper parts of the positioning pieces are all provided with an outward open mouth.

[0009] Preferably, a plurality of mounting grooves are arranged on the box cover, a mounting seat matched with the mounting grooves is arranged on the box body, and the box cover is extruded and fixed with the mounting seat through screw cooperation with the mounting seat.

[0010] Preferably, a secondary air inlet communicating with the silencing cavity is arranged on the housing near the air inlet, and a gap is provided between the secondary air inlet and the silencing block located in the same silencing cavity.

[0011] Preferably, a sealing groove is arranged along the edge of the silencing cavity on the upper end face of the box body, and a sealing gasket is filled in the sealing groove.

[0012] Preferably, the silencing block has a slot that matches the connecting pipe.

[0013] (III) Beneficial Effects

[0014] This utility model has the following beneficial effects:

[0015] This exhaust muffler box, through its connecting pipe, allows the gas flowing between the two muffler chambers to flow in a staggered manner, effectively preventing the formation of eddies during airflow and reducing noise generation at the source. The intake and exhaust channels, working in conjunction with the connecting pipe, maximize the airflow path within the limited box space, thereby improving the muffler block's absorption of noise during gas flow and ultimately enhancing the overall noise reduction effect of the muffler box. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the box body of this utility model;

[0018] Figure 3 This is a schematic diagram of the installation layout structure of the noise reduction block of this utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of this utility model along the AA direction.

[0020] In the diagram: 1. Box body; 11. Positioning component; 12. Main air inlet; 13. Secondary air inlet; 14. Silencing chamber; 15. Air intake channel; 16. Connecting pipe; 17. Air outlet channel; 18. Air outlet; 19. Sealing groove; 110. Mounting base; 2. Box cover; 3. Silencing block; 4. Mounting groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 This utility model provides a technical solution: an exhaust muffler box, including a box body 1 and a box cover 2 fixed together. The inner cavity of the box body 1 is arranged with a plurality of muffler chambers 14. The muffler chambers 14 are all connected by a connecting pipe 16. The connecting pipes 16 are staggered between each other. A main air inlet 12 and an air outlet 18 are respectively provided on the same side of the box body 1. The main air inlet 12 is connected to the muffler chamber 14 furthest away from the main air inlet 12 through an air inlet channel 15. The muffler chamber 14 furthest away from the air outlet 18 is connected to the air outlet 18 through an air outlet channel 17. Each muffler chamber 14 is filled with a muffler block 3.

[0023] This invention, through the connecting pipe 16, allows the gas flowing between the two silencing chambers 14 to flow in a staggered manner, effectively preventing the formation of eddies during airflow and reducing noise generation at the source. Through the air inlet channel 15 and air outlet channel 17, in conjunction with the function of the connecting pipe 16, the airflow path is extended to the maximum extent within the limited space of the box 1, thereby improving the absorption of noise by the silencing block 3 during gas flow and thus improving the overall silencing effect of the silencing box.

[0024] Reference Figure 2 and 3 As shown in this embodiment, several positioning members 11 are symmetrically arranged along the edge of the upper surface of the box body 1, and each positioning member 11 has an outward opening at its upper part. Through the positioning members 11, when installing the box body 1 and the box cover 2, the openings on the positioning members 11 can quickly guide the box cover 2 and the box body 1 to be aligned and positioned, facilitating the subsequent fixing and connection of the box cover 2 and the box body 1.

[0025] Reference Figure 1 and 2 As shown in this embodiment, the cover 2 is provided with several mounting slots 4, and the body 1 is provided with mounting seats 110 that match the mounting slots 4 one by one. The cover 2 is fixed to the mounting seats 110 by screws. The mounting slots 4 and mounting seats 110 facilitate the fastening of the cover 2 and the body 1 by fastening screws, and also facilitate the replacement of the sound-absorbing block 3 as needed.

[0026] Reference Figure 3 and 4As shown in this embodiment, a secondary air inlet 13 communicating with the silencing cavity 14 is arranged on the box body 1 near the air inlet. A gap is provided between the secondary air inlet 13 and the silencing block 3 located in the same silencing cavity 14. Through the secondary air inlet 13, the entire silencing box can simultaneously exhaust and silence multiple gases. At the same time, since a gap is provided between the secondary air inlet 13 and the silencing block 3 in the same silencing cavity 14, it can effectively prevent the gas discharged from the secondary air inlet 13 from directly impacting the silencing block 3 and generating large gas impact noise.

[0027] Reference Figure 3 As shown, in this embodiment, a sealing groove 19 is arranged along the edge of the silencing cavity 14 on the upper surface of the box body 1, and a sealing gasket is filled in the sealing groove 19. The sealing groove 19 ensures the sealing performance of each silencing cavity 14 after the box cover 2 is fixedly closed with the box body 1, effectively preventing gas leakage between different silencing cavities 14 and thus avoiding increased exhaust noise.

[0028] In this embodiment, the silencing block has a slot that matches the connecting pipe.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An exhaust muffler box, comprising a box body and a box cover fixed together, characterized in that: The inner cavity of the box is provided with several silencing chambers, which are connected by connecting pipes. The connecting pipes are staggered between each other. A main air inlet and an air outlet are respectively provided on the same side of the box. The main air inlet is connected to the silencing chamber furthest from the main air inlet through an air inlet channel. The silencing chamber furthest from the air outlet is connected to the air outlet through an air outlet channel. Each silencing chamber is filled with silencing blocks.

2. The exhaust muffler box according to claim 1, characterized in that: Several positioning elements are symmetrically arranged along the edge of the upper surface of the box, and each positioning element has an outward opening at its upper part.

3. The exhaust muffler box according to claim 2, characterized in that: The box cover is provided with several mounting slots, and the box body is provided with mounting seats that match the mounting slots one by one. The box cover is fixed to the mounting seats by screws.

4. An exhaust muffler box according to claim 1 or 3, characterized in that: The housing has a secondary air inlet located near the air inlet, which communicates with the silencing cavity. A gap is provided between the secondary air inlet and the silencing block located in the same silencing cavity.

5. The exhaust muffler box according to claim 1, characterized in that: A sealing groove is arranged along the edge of the silencing cavity on the upper surface of the box body, and a sealing gasket is arranged inside the sealing groove.

6. The exhaust muffler box according to claim 1, characterized in that: The silencing block has a slot that matches the connecting pipe.

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