Exhaust muffler and compressor

Abstract

The utility model provides an exhaust muffler and compressor relates to compressor field, aiming at the problem of poor exhaust pulsation and noise suppression effect of single flow guide hole cooperation cavity shape arrangement currently, multiple flow guide holes are configured on the baffle, airflow flows into the second sound attenuation chamber through multiple flow guide holes on the baffle, because of each flow guide hole axis setting, multiple airflow counterattacks in the second sound attenuation chamber specific point, and the period performance energy of exhaust pulsation and the sound energy related to noise, in counterattack, through airflow mutual interference, collision and transform into other energy, such as heat energy or tiny vibration energy, realize remarkable energy dissipation attenuation, and the airflow after processing is discharged through the exhaust pipe, improve the inhibition of exhaust pulsation and noise of compressor, through weakening pulsation and consuming sound energy, can more effectively reduce exhaust noise, reach better silencing performance, more preferably satisfy the actual equipment demand of compressor exhaust noise reduction and stable exhaust.

Description

Technical Field

[0001] This utility model relates to the field of compressors, specifically to an exhaust muffler and a compressor. Background Technology

[0002] Reciprocating compressors operate at very high speeds. The cylinder and piston interact to complete thousands of intake, compression, and exhaust processes per minute. The gas compression process has a very obvious periodicity, which results in the compressor having obvious exhaust pulsation and exhaust noise.

[0003] In the exhaust mufflers currently used in compressors, the internal baffles of the exhaust mufflers only have one guide hole, and the guide hole is mostly designed to match the shape of the cavity so that the airflow and the cavity work together. Although the exhaust muffler has a certain effect on suppressing the exhaust pulsation and noise of the compressor, the elimination effect is poor. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing an exhaust muffler and compressor. Multiple guide holes are configured on a partition, through which airflow flows into a second muffler chamber. Due to the axial alignment of each guide hole, multiple airflows collide at specific points within the second muffler chamber. The periodic energy of exhaust pulsations and the acoustic energy related to noise are transformed into other forms of energy, such as heat or minute vibration energy, through mutual interference and collision during this collision, achieving significant energy attenuation. The treated airflow is then discharged through the exhaust pipe, improving the suppression of exhaust pulsations and noise from the compressor.

[0005] The primary objective of this invention is to provide an exhaust muffler, which employs the following solution:

[0006] It includes a muffler, inside which a baffle is installed to divide the interior of the muffler into a first muffler chamber and a second muffler chamber. The baffle has multiple guide holes, and the straight lines containing the axes of all the guide holes intersect at a point in the second muffler chamber to form airflow counter-current energy dissipation. The first muffler chamber is connected to a duct, and the second muffler chamber is connected to an exhaust pipe.

[0007] Furthermore, the silencing package includes a first silencing package segment and a second silencing package segment. One end of the second silencing package segment is sleeved outside the first silencing package segment and sealed. A first silencing cavity is formed between the partition and the first silencing package segment, and a second silencing cavity is formed between the partition and the second silencing package.

[0008] Furthermore, the second silencing section is fitted onto one end of the first silencing section, which is an expansion cylinder section. The partition is located inside the expansion cylinder section, with one end abutting against the first silencing section and the other end abutting against the main body section of the second silencing section connected to the expansion cylinder section.

[0009] Furthermore, the main body of the muffler is a cylindrical structure, with tapered sections at both ends of the main body, which are respectively connected to the duct and the exhaust pipe.

[0010] Furthermore, the end of the conduit furthest from the muffler is connected to a connector, which is then engaged with a fastener to connect to the cylinder seat.

[0011] Furthermore, the partition is a disc-shaped structure, and the partition and the sound-absorbing package are coaxially distributed.

[0012] Furthermore, the plurality of flow guide holes are distributed sequentially at intervals around the axis of the partition plate.

[0013] Furthermore, the plurality of guide holes are evenly distributed circumferentially upward along the axis of the partition plate.

[0014] Furthermore, the axis of the flow guide hole is inclined relative to the axis of the partition plate.

[0015] The second objective of this invention is to provide a compressor that utilizes the exhaust muffler as described in the first objective.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are:

[0017] To address the issue of poor exhaust pulsation and noise suppression due to the current single-hole design and cavity shape, multiple flow guides are incorporated into the baffle plate. Airflow flows into the second silencing chamber through these guides. Because the axes of each guide are aligned, multiple airflows collide at specific points within the second silencing chamber. The periodic energy of the exhaust pulsation and the acoustic energy associated with the noise are transformed into other forms of energy, such as heat or minute vibration energy, through mutual interference and collision during this collision. This results in significant energy attenuation. The treated airflow is then discharged through the exhaust pipe, further enhancing the suppression of exhaust pulsation and noise from the compressor. By reducing pulsation and dissipating acoustic energy, exhaust noise can be reduced more effectively, achieving better silencing performance and better meeting the practical equipment requirements for compressor exhaust noise reduction and stable exhaust.

[0018] The coaxial design of the baffle and the muffler, the circumferential uniform distribution of the guide holes, and the setting of the tilt angle ensure that the collision point of multiple airflows in the second muffler chamber is accurate and the impact force is balanced, maximizing the energy dissipation effect caused by mutual interference and collision of airflows, and further reducing the periodic energy and noise energy of exhaust pulsation.

[0019] The segmented sealing structure makes the functions of the two silencing chambers more distinct. The initial buffering of the first silencing chamber and the counter-current energy dissipation of the second silencing chamber form a progressive silencing effect. Combined with the buffering of the expansion section and the flow stabilization of the contraction section, the overall silencing effect is more significant.

[0020] The nested sealing design of the first and second silencer sections reduces airflow leakage. The connection method of the joints and fasteners ensures a stable connection between the silencer and the cylinder seat, reducing structural loosening and additional noise caused by vibration. This enables the silencer to operate stably in the high-frequency working environment of the compressor and extends its service life. Attached Figure Description

[0021] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0022] Figure 1 This is an exploded view of an exhaust muffler in one or more embodiments of the present invention.

[0023] Figure 2 This is a schematic diagram of the partition structure in one or more embodiments of the present invention.

[0024] Figure 3 This is a schematic diagram showing the straight line corresponding to the axis of the guide hole on the partition plate relative to a point in one or more embodiments of the present invention.

[0025] Among them, 1. Connector; 2. Conduit; 3. First silencer section; 4. Baffle; 41. Guide hole; 42. Straight line where the axis of the guide hole is located; 5. Second silencer section; 6. Exhaust pipe. Detailed Implementation

[0026] Example 1

[0027] In a typical embodiment of this utility model, such as Figures 1-3 As shown, an exhaust muffler is presented.

[0028] The existing exhaust muffler baffle 4 only has one guide hole 41, which is mainly arranged to match the shape of the cavity. Although it can suppress exhaust pulsation and noise, the effect is not ideal. Based on this, this embodiment provides an exhaust muffler that opens multiple guide holes 41 on the baffle 4 of the muffler and arranges the straight line 42 containing the axis of the guide holes to intersect at a point in the second muffler cavity to form airflow counter-current energy dissipation, thereby improving the exhaust muffler's effect on eliminating exhaust pulsation and exhaust noise of reciprocating compressors.

[0029] like Figures 1-3As shown, the exhaust muffler consists of a muffler housing, a baffle plate 4, a duct 2, and an exhaust pipe 6. The muffler housing is its main structure, forming a muffler cavity inside. The baffle plate 4 divides the muffler cavity into a first muffler cavity and a second muffler cavity. The duct 2 is connected to the first muffler cavity, serving as the passage for airflow into the muffler; the exhaust pipe 6 is connected to the second muffler cavity, used to discharge the treated gas. The baffle plate 4 has multiple guide holes 41, and the axial extension lines of all the guide holes 41 converge at a point within the second muffler cavity.

[0030] Multiple guide holes 41 are used to create airflow counteraction, consuming airflow energy and thus enhancing the silencing and reducing pulsation effects. The working process is as follows: the compressor exhaust enters the first silencing chamber through the duct 2. After initial buffering and silencing, the airflow flows into the second silencing chamber through multiple guide holes 41 on the baffle 4. Due to the axial alignment of each guide hole 41, multiple airflows counteract each other at specific points within the second silencing chamber. The periodic energy of the exhaust pulsation and the acoustic energy related to noise are converted into other forms of energy, such as heat or minute vibration energy, through mutual interference and collision of the airflows during the counteraction, achieving significant energy attenuation. The processed airflow is then discharged through the exhaust pipe 6.

[0031] The airflow counter-current energy dissipation mechanism triggered by the multiple guide holes 41 can more efficiently dissipate exhaust pulsation energy compared to a traditional muffler with a single guide hole 41, thus optimizing the suppression of periodic exhaust pulsations. Furthermore, by weakening pulsations and dissipating sound energy, it can more effectively reduce exhaust noise, achieving better noise reduction performance and better meeting the practical engineering requirements of compressor exhaust noise reduction and stable exhaust.

[0032] Based on the above, the structure of each component is refined and described in detail, thereby optimizing the stability of airflow counteraction, enhancing the synergistic effect of the silencer cavity, and improving the sealing and adaptability of the overall structure, so as to ensure that the counteraction energy dissipation mechanism of the multi-guide hole 41 can be effectively utilized.

[0033] like Figure 1 As shown, the silencing package has a segmented structure, consisting of a first silencing package segment 3 and a second silencing package segment 5. One end of the second silencing package segment 5 is fitted over and sealed to the outside of the first silencing package segment 3, clearly defining the first silencing chamber located between the partition 4 and the first silencing package segment 3, and the second silencing chamber located between the partition 4 and the second silencing package segment 5, thus avoiding cross-flow interference between the chambers. The fitted end of the second silencing package segment 5 is an expansion cylinder segment, within which the partition 4 is located. One end of the partition 4 abuts against the first silencing package segment 3, and the other end abuts against the main body of the second silencing package segment 5, connecting to the expansion cylinder segment. This not only fixes the position of the partition 4 but also facilitates the connection and sealing of the first silencing package segment 3 and the second silencing package segment 5 using the expansion cylinder segment.

[0034] The main body of the muffler is a cylindrical structure with tapered sections at both ends that connect to the duct 2 and the exhaust pipe 6. The tapered section design guides the airflow smoothly into and out of the muffler, reducing turbulence at the inlet and outlet and preventing the generation of additional noise.

[0035] The end of the duct 2 away from the muffler is connected to the cylinder seat through the connector 1 and fastener. The rigid connection ensures that the exhaust airflow can stably enter the first muffler chamber, avoiding airflow leakage and vibration noise caused by loose connection.

[0036] Regarding the specific layout of the baffle 4 and the guide hole 41, as follows: Figure 2 and Figure 3 As shown, the baffle 4 is disc-shaped and coaxially distributed with the silencing package, ensuring the symmetry of the structure. Multiple guide holes 41 are distributed sequentially and at intervals around the axis of the baffle 4, and the axis of the guide holes 41 is inclined relative to the axis of the baffle 4, so that the extension lines of the axes of each guide hole 41 can precisely intersect at a point in the second silencing cavity, providing a structural basis for airflow counteraction.

[0037] Furthermore, in order to improve its effectiveness in guiding airflow, multiple guide holes 41 are evenly distributed circumferentially upward along the axis of the partition plate 4.

[0038] The segmented silencing package's sealed design makes the first and second silencing chambers independent yet connected acoustic spaces. After the airflow enters the first silencing chamber from the duct 2 through the tapered section, it first undergoes preliminary expansion and pressure reduction in a relatively enclosed space, reducing initial pulsating energy. Subsequently, the airflow passes through the evenly distributed inclined guide holes 41 on the partition 4. Since the guide holes 41 are symmetrical about the axis and have the same inclination angle, multiple airflows can form symmetrical impact paths and precisely collide within the expansion section of the second silencing chamber.

[0039] The tapered sections at both ends of the silencer guide the incoming and outgoing airflow to flow smoothly, reducing eddies and disturbances at the inlet and outlet. Combined with the sealed chamber structure, this maintains the silencing effect caused by energy consumption.

[0040] To improve the stability and efficiency of airflow counteraction, the coaxial design of the baffle 4 and the muffler, the circumferential uniform distribution of the guide holes 41, and the setting of the tilt angle ensure that the counteraction points of multiple airflows in the second muffler chamber are accurate and the impact force is balanced. This maximizes the energy dissipation effect caused by mutual interference and collision of airflows, and further reduces the periodic energy and noise energy of exhaust pulsation.

[0041] Furthermore, the synergistic effect of the silencing chambers is enhanced. The segmented sealing structure makes the functions of the two silencing chambers clearer. The initial buffering of the first silencing chamber and the counter-current energy dissipation of the second silencing chamber form a progressive silencing effect. Combined with the buffering of the expansion section and the flow stabilization of the contraction section, the overall silencing effect is more significant.

[0042] The nested sealing design of the first silencer section 3 and the second silencer section 5 reduces airflow leakage. The connection method between the connector 1 and the fastener ensures a stable connection between the silencer and the cylinder seat, reducing structural loosening and additional noise caused by vibration. This enables the silencer to operate stably in the high-frequency working environment of the compressor and extends its service life.

[0043] Example 2

[0044] In another typical embodiment of this utility model, such as Figures 1-3 As shown, a compressor is presented.

[0045] The exhaust muffler as described in Example 1 is adopted. With the help of its multi-guide hole 41, the airflow forms an energy-dissipating structure. The airflow flows into the second muffler cavity through the multiple guide holes 41 on the baffle 4. Because the axis of each guide hole 41 is set, multiple airflows collide at specific points in the second muffler cavity. The periodic energy of exhaust pulsation and the sound energy related to noise are converted into other energy, such as heat energy or micro-vibration energy, through mutual interference and collision of airflows during the collision. This achieves significant energy dissipation and can effectively improve the elimination effect of exhaust pulsation and noise, thereby enhancing the stability of compressor operation and reducing noise pollution.

[0046] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An exhaust silencer, characterized by, It includes a muffler, inside which a baffle is installed to divide the interior of the muffler into a first muffler chamber and a second muffler chamber. The baffle has multiple guide holes, and the straight lines containing the axes of all the guide holes intersect at a point in the second muffler chamber to form airflow counter-current energy dissipation. The first muffler chamber is connected to a duct, and the second muffler chamber is connected to an exhaust pipe.

2. The exhaust silencer according to claim 1, characterized in that The silencing package includes a first silencing package segment and a second silencing package segment. One end of the second silencing package segment is sleeved outside the first silencing package segment and sealed. A first silencing cavity is formed between the partition and the first silencing package segment, and a second silencing cavity is formed between the partition and the second silencing package segment.

3. The exhaust silencer according to claim 2, wherein The second silencing section is fitted onto one end of the first silencing section, which is an expansion cylinder section. The partition is located inside the expansion cylinder section, with one end abutting against the first silencing section and the other end abutting against the main body section of the second silencing section connected to the expansion cylinder section.

4. The exhaust silencer according to claim 1 or 2 or 3, characterized in that, The main body of the muffler is a cylindrical structure, with tapered sections at both ends that connect to the duct and the exhaust pipe, respectively.

5. The exhaust silencer according to claim 4, wherein The end of the conduit furthest from the muffler is connected to a connector, which is then fitted with a fastener to the cylinder block.

6. The exhaust silencer according to claim 4, wherein The partition is a disc-shaped structure, and the partition and the sound-absorbing package are coaxially distributed.

7. The exhaust silencer according to claim 6, characterized in that The multiple guide holes are distributed sequentially at intervals around the axis of the partition plate.

8. The exhaust muffler as described in claim 7, characterized in that, The multiple guide holes are evenly distributed circumferentially upward along the axis of the partition plate.

9. The exhaust silencer according to claim 1, wherein The axis of the flow guide hole is inclined relative to the axis of the partition.

10. A compressor characterized by, Using the exhaust muffler as described in any one of claims 1-9.

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