Discharge silencer assembly and gas compression equipment
By designing a venting silencer assembly with the silencer placed inside the venting chamber, secondary noise reduction is achieved through the expansion effect, solving the noise problem during compressor venting, reducing costs and space occupation, and making it suitable for low-pressure, high-volume operating conditions, with noise confined within the venting chamber.
Patent Information
- Application Number
- CN202423252970.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Existing compressors generate high-temperature, high-pressure, and high-speed airflow noise during shutdown and initial venting, and pipeline-type venting silencers are costly, space-consuming, and require additional protective structures.
Design a venting muffler assembly, wherein the muffler is located inside the venting chamber and is connected to the outside of the venting chamber through a connecting hole. The muffler cavity is enlarged relative to the connecting hole. Airflow first enters the muffler cavity and then enters the venting chamber cavity, using the expansion effect for secondary noise reduction. The muffler is located inside the venting chamber to avoid occupying extra space and to provide protection using the venting chamber structure.
It effectively reduces noise intensity, minimizes the space and cost of silencers, and is suitable for low-pressure, high-volume operating conditions with significant noise reduction effects. Noise is confined within the venting chamber, improving the consumer experience.
Smart Images
Figure CN223594368U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to a muffling device, in particular to a relief muffler assembly and a gas compression device. BACKGROUND
[0002] The compressor will produce unstable high temperature, high pressure and high speed airflow at the moment of shutdown and starting relief, which has the characteristics of high noise intensity and wide frequency spectrum. If a relief muffler is not added to the relief pipeline, it will cause instantaneous abnormal sound (sound pressure level can be increased by 10-20 dB), which seriously affects the customer experience.
[0003] Many existing pipeline relief mufflers have high cost, occupy space, and need to increase protective structures to prevent safety problems caused by high temperature and high pressure injection. CONTENT OF THE UTILITY MODEL
[0004] The purpose of the present application is to disclose a relief muffler assembly and a gas compression device.
[0005] In a first aspect, the present application discloses a relief muffler assembly. The relief muffler assembly comprises a muffler and a relief box. The relief box comprises a relief box cavity isolated from the outside world. The muffler is assembled in the relief box and surrounds the muffler cavity with the cavity wall of the relief box cavity, or the muffler is located in the relief box cavity and comprises a muffler cavity; the muffler cavity is communicated with the object to be muffled outside the relief box through a communication hole, and is enlarged relative to the communication hole. The muffler comprises a plurality of sound holes, and the plurality of sound holes communicate the relief box cavity and the muffler cavity.
[0006] In some embodiments, the relief box is provided with the communication hole; the relief muffler assembly comprises a relief pipe, the muffler cavity is communicated with the object to be relieved through the communication hole and the relief pipe; the relief pipe is rigidly connected with the relief box, or the relief pipe is connected with the relief box through a flexible connecting piece.
[0007] In some embodiments, the flexible connecting piece comprises a bellows.
[0008] In some embodiments, the sound hole is a circular hole or a square hole.
[0009] In some embodiments, the plurality of sound holes are arranged in multiple rows in the depth direction and the circumferential direction of the muffler cavity.
[0010] In some embodiments, the muffler is a small hole muffler, and / or the projection of the muffler cavity along the depth direction is a square, a circle or a polygon.
[0011] In some embodiments, the airflow from outside of the bleed muffler assembly enters the muffler cavity in a first direction; at least part of the bleed hole communicates the bleed box cavity and the muffler cavity in a second direction; the second direction is bent relative to the first direction.
[0012] In some embodiments, the second direction is perpendicular to the first direction.
[0013] In some embodiments, the bleed muffler assembly comprises a bleed box and a bleed pipe; the bleed box is located outside of the bleed box and comprises a bleed box cavity; the bleed box cavity is isolated from outside; the bleed pipe communicates with the bleed box cavity through a communication port, and the bleed box cavity communicates with the muffler cavity through a communication hole. The bleed box cavity is enlarged relative to the communication port, and the muffler cavity is enlarged relative to the communication hole.
[0014] In some embodiments, the pipe wall of the bleed pipe is non-porous.
[0015] In a second aspect, the present application discloses a gas compression device. The gas compression device comprises any one of the aforementioned bleed muffler assemblies, and the gas compression device comprises an air compressor or a blower, and the bleed box is a chassis of the air compressor or a chassis of the blower.
[0016] For the bleed muffler assembly and the gas compression device, the following beneficial effects are achieved: the bleed gas from the object to be silenced (the bleed pipe) enters the muffler cavity from the bleed pipe, and the noise is preliminarily reduced by the expansion effect due to the expansion of the muffler cavity relative to the communication hole; and then the bleed gas enters the bleed box cavity from the muffler cavity through the bleed hole, and the wideband noise is suppressed again by the expansion effect due to the fact that the muffler is located in the bleed box cavity and the bleed box cavity is larger than the muffler. Thus, the bleed muffler assembly can well eliminate noise.
[0017] In addition, some related technologies use a pipe-type bleed muffler, which is located outside of the gas compression device and needs to be provided with a protective structure. The bleed muffler assembly of the present application is compared with the pipe-type bleed muffler. Because the muffler is located in the bleed box, on the one hand, the muffler does not occupy additional space, and on the other hand, the high-temperature and high-pressure gas is directly injected into the muffler 1 and / or the bleed box, and the protection is realized by using the structure of the bleed box, without the need to additionally add a protective structure. The bleed muffler assembly occupies a small space and has a low cost (for example, at least the cost of the protective structure is saved).
[0018] Furthermore, in the application of low pressure and large air volume, the air flow is large, but the discharge muffler assembly can perform sound attenuation through the secondary expansion effect, so even if the air flow is large, it can also be attenuated, so the discharge muffler assembly is more obvious in the application of low pressure and large air volume.
[0019] Finally, the noise is discharged into the discharge box cavity, and the sound is limited in the discharge box. For consumers outside the discharge box, the noise is low. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 is a schematic diagram of a first discharge muffler assembly of the present application;
[0021] Figure 2 is an enlarged view of part A in Figure 1
[0022] Figure 3 is a schematic diagram of a second discharge muffler assembly of the present application;
[0023] Figure 4 is an enlarged view of part B in Figure 3
[0024] Figure 5 is a schematic diagram of a third discharge muffler assembly of the present application;
[0025] Figure 6 is a schematic diagram of a muffler of the present application. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments (or "embodiments") of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated.
[0027] If the embodiments of the present application involve directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings); if the posture changes, the directional indication or positional relationship also changes accordingly. In addition, the terms "first", "second", etc. in the embodiments of the present application are only used for convenience of description, and cannot be understood as indicating or implying relative importance.
[0028] Referring to Figure 1 , Figure 3 and Figure 5 The present application discloses a kind of bleed muffler assemblies. The bleed muffler assembly includes muffler 1 and bleed tank 2. The bleed tank 2 includes bleed tank cavity 21 isolated from the outside world. The outside world is isolated from the bleed tank closed, only the port connected with the outside component, such as, the communication hole 211 described later.
[0029] The muffler 1 is located in the bleed tank cavity 21, and the cavity wall of the bleed tank cavity 21 surrounds the muffler cavity 11. In the embodiment, the cavity wall is the top wall of the bleed tank cavity 21. Of course, in another embodiment, the muffler 1 itself can have the bleed tank cavity 21. Regardless of the structure of the muffler 1, the muffler cavity 11 is communicated with the object to be silenced outside the bleed tank 2 through the communication hole 211, and is enlarged relative to the communication hole. How to communicate is not limited, in the embodiment of the present application, it is communicated with the object to be silenced through the bleed pipe 3. The object to be silenced is, for example, the bleed line of a compressor or a blower, and the muffler cavity 11 is connected to the bleed line through the bleed pipe 3.
[0030] The muffler 1 also includes a plurality of sound holes 12, and the plurality of sound holes 12 communicate the bleed tank cavity 21 and the muffler cavity 11.
[0031] Referring to the gas flow direction shown by the solid arrow of Figure 1 , Figure 3 , Figure 5 and Figure 6 , the working process of the above-mentioned bleed muffler assembly is described as follows: the bleed gas from the object to be silenced (the bleed line) enters the muffler cavity 11 from the bleed pipe 3, and the noise is preliminarily reduced by the expansion effect due to the enlargement of the muffler cavity 11 relative to the communication hole; then the bleed gas enters the bleed tank cavity 21 from the muffler cavity 11 through the sound holes 12, and the broadband noise is suppressed again by the expansion effect due to the fact that the muffler 1 is located in the bleed tank cavity 21 and the bleed tank cavity 21 is larger than the muffler 1. Thus, the bleed muffler assembly can well eliminate noise.
[0032] In addition, some related technologies use a pipe-type bleed muffler, which is located outside the gas compression device and needs to be provided with a protective structure. Compared with the pipe-type bleed muffler, the bleed muffler assembly of the present application has the muffler 1 located in the bleed tank 2, on the one hand, the muffler does not occupy extra space, and on the other hand, the high-temperature and high-pressure gas is directly injected into the muffler 1 and / or the bleed tank 2, and the protection is realized by using the structure of the bleed tank 2, without the need to additionally provide a protective structure (that is, the cavity wall of the bleed tank can replace the protective structure around the pipe-type bleed muffler), so that the bleed muffler assembly occupies a small space and has a low cost (for example, the cost of the protective structure is saved).
[0033] Further, in the application of low pressure and large air volume, the air flow is large, but the discharge muffler assembly can be silenced by the secondary expansion effect, so even if the air flow is large, it can also be silenced, so the discharge muffler assembly is more obvious in the application of low pressure and large air volume.
[0034] Finally, the noise is discharged into the discharge box cavity, and the sound is limited in the discharge box. For consumers outside the discharge box 2, the noise is low.
[0035] Referring to Figure 1 and Figure 2 , the discharge muffler assembly includes a discharge pipe 3, and the top of the discharge box 2 is provided with a communication hole 211. The communication hole 211 communicates the muffler cavity 11 and the outside of the discharge box 2. The discharge muffler assembly includes a discharge pipe 3. The muffler cavity 11 is the same as the discharge object through the communication hole 211 and the discharge pipe 3. The discharge pipe 3 is rigidly connected with the discharge box 2.
[0036] As described above, since the discharge pipe 3 is rigidly connected with the discharge box 2, for example, by the combination of bolts and flanges, the connection of the discharge pipe 3 and the discharge box 2 is simple and the cost is low (for example, compared with subsequent embodiments, no additional flexible connecting piece is needed).
[0037] Referring to Figure 3 and Figure 4 , Figure 3 and Figure 4 , the difference between the embodiments shown in Figure 1 and Figure 2 is that the connection mode of the discharge pipe 3 and the discharge box 2 is different. In Figure 3 and Figure 4 , the discharge pipe 3 is connected with the discharge box 2 through a flexible connecting piece 4. The flexible connecting piece 4 is not limited, and in this application, the flexible connecting piece 4 includes a bellows.
[0038] As described above, the discharge pipe 3 is connected with the discharge box 2 through the flexible connecting piece 4, and the flexibility can isolate vibration to avoid vibration of the discharge box 2 and the muffler 1.
[0039] The shape of the sound hole 12 is not limited, and in some embodiments, the sound hole 12 is a round hole or a square hole.
[0040] As described above, the sound hole 12 is a round hole or a square hole, which is convenient for manufacturing the muffler 1 under the premise of ensuring the sound reduction effect.
[0041] Based on the above-mentioned muffler function, the structure of the muffler is not limited, and in some embodiments, the muffler is a small hole muffler. In a pipe type relief muffler, a relief pipe 3 is used for relief muffling, at this time, the side wall of the relief pipe 3 is provided with a muffling hole, and the muffler cavity 11 of the present application is larger than the relief pipe and is located in the relief box cavity 21, and the muffler 1 can be provided with more muffling holes (small holes), which can obtain a larger expansion ratio, and thus the muffling effect is better.
[0042] Referring to Figure 6 and in combination with Figures 1 to 5 , a plurality of said muffling holes 12 are arranged in multiple rows in the depth direction and the circumferential direction of the muffler cavity 11. In the foregoing Figure 6 、 Figure 1 and Figure 5 , there are three rows of muffling holes 12 along the depth direction of the muffler cavity 11.
[0043] As described above, due to the arrangement of multiple rows of muffling holes 12, the structure of the muffler 1 is simple and the muffler 1 is easy to process under the premise of meeting the muffling function.
[0044] Referring to Figure 6 , in some embodiments, the orthographic projection of the muffler cavity 11 along the depth direction is square. In other embodiments, the orthographic projection of the muffler cavity 11 along the depth direction can also be circular or polygonal.
[0045] As described above, the orthographic projection of the muffler cavity 11 along the depth direction is square, circular or polygonal, and the structure of the muffler 1 is simple.
[0046] Referring to Figure 1 、 Figure 3 、 Figure 5 and Figure 6 , the airflow from the outside of the relief muffler assembly enters the muffler cavity 11 along a first direction; at least part of the muffling holes 12 communicate the relief box cavity 21 and the muffler cavity 11 along a second direction. The second direction is bent relative to the first direction.
[0047] As described above, the second direction is bent relative to the first direction, so that the airflow is bent from the muffler cavity 11 to the relief box cavity 21, and the sound wave is reflected multiple times, and the muffling effect is good.
[0048] Referring to Figure 1 、 Figure 3 and Figure 5 , the second direction is perpendicular to the first direction. In Figure 1 、 Figure 3 and Figure 5 , the first direction is schematically vertical, and the second direction is schematically horizontal.
[0049] As set forth above, since the second direction is perpendicular to the first direction, on the one hand, only the sound absorber 1 needs to be provided with the sound absorption hole 12 in the second direction, and the structure of the sound absorber 1 is simple and convenient to process.
[0050] Referring to Figure 5 , the relief sound absorber assembly comprises a relief box 5 and a relief pipe 3; the relief box 5 is located outside the relief box 2 and comprises a relief box cavity 51. The relief pipe 3 is in communication with the relief box cavity 51 through a communication port 511. The relief box cavity 51 is in communication with the sound absorber cavity 11 through a communication hole 211. The relief box cavity 51 is enlarged relative to the communication port 511. The sound absorber cavity 11 is enlarged relative to the communication hole 211.
[0051] As set forth above, by setting the relief box 5 and the relationship between the relief box 5 and the communication port 511, the communication hole 211 and the sound absorber cavity 11, the airflow from the relief pipe 3 enters the relief box cavity 51 and is absorbed by the first expansion effect, enters the sound absorber cavity 11 from the relief box cavity 51 and is absorbed by the second expansion effect, and enters the relief box cavity 21 from the sound absorber cavity 11 and is absorbed by the third expansion effect. Therefore, by the three expansion effects, the sound absorber assembly has good sound absorption effect.
[0052] In various embodiments of the present application, the pipe wall of the relief pipe 3 is free of holes.
[0053] As set forth above, since the pipe wall is free of holes, the gas can only move towards the sound absorber cavity 11, and the noise is low. If holes are provided in the pipe wall of the relief pipe 3, the gas will flow out of the holes in the pipe wall and generate noise.
[0054] In a second aspect, the present application discloses a gas compression device. The gas compression device comprises any one of the foregoing relief sound absorber assemblies, the gas compression device comprises an air compressor or a blower, and the relief box 2 is a chassis of the air compressor or a chassis of the blower.
[0055] As set forth above, since the relief box 2 is a chassis of the air compressor or a chassis of the blower, the relief sound absorber assembly can be conveniently and quickly arranged in the unit composed of the air compressor or the blower.
[0056] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the present application is not limited to the precise structure described in the above embodiments and shown in the accompanying drawings; any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.
Claims
1. A bleed muffler assembly characterized by, The bleed muffler assembly comprises a muffler and a bleed box; wherein: The bleed box comprises a bleed box cavity which is isolated from the outside world; The muffler is assembled in the bleed box and forms a muffler cavity with the cavity wall of the bleed box cavity, or the muffler is located in the bleed box cavity and comprises a muffler cavity; the muffler cavity is communicated with the object to be damped outside the bleed box through a communication hole and is enlarged relative to the communication hole; The muffler comprises a plurality of damping holes which communicate the bleed box cavity and the muffler cavity.
2. The bleed muffler assembly of claim 1, wherein, The bleed box is provided with the communication hole; the bleed muffler assembly comprises a bleed pipe, and the muffler cavity is communicated with the object to be damped through the communication hole and the bleed pipe; The bleed pipe is rigidly connected with the bleed box, or the bleed pipe is connected with the bleed box through a flexible connecting member.
3. The bleed muffler assembly of claim 2, wherein, The flexible connecting member comprises a bellows.
4. The bleed muffler assembly of claim 1, wherein, The damping hole is a round hole or a square hole; And / or, the plurality of damping holes are arranged in multiple rows in the depth direction and the circumferential direction of the muffler cavity.
5. The bleed muffler assembly of claim 1, wherein, The muffler is a small hole muffler, and / or the projection of the muffler cavity along the depth direction is a square, a circle or a polygon.
6. The bleed muffler assembly of claim 1, wherein, The airflow from the outside of the bleed muffler assembly enters the muffler cavity in a first direction; at least part of the damping holes communicate the bleed box cavity and the muffler cavity in a second direction; the second direction is bent relative to the first direction.
7. The bleed muffler assembly of claim 6, wherein, The second direction is perpendicular to the first direction.
8. The bleed muffler assembly of claim 1, wherein, The bleed muffler assembly comprises a bleed box and a bleed pipe; the bleed box is located outside the bleed box and comprises a bleed box cavity; the bleed box cavity is isolated from the outside world; the bleed pipe is communicated with the bleed box cavity through a communication port, and the bleed box cavity is communicated with the muffler cavity through a communication hole; The bleed box cavity is enlarged relative to the communication port, and the muffler cavity is enlarged relative to the communication hole.
9. The bleed muffler assembly of claim 2 or 8, wherein, The pipe wall of the bleed pipe is non-porous.
10. A gas compression apparatus, characterized by, The gas compression device comprises the bleed muffler assembly of any one of claims 1 to 9, the gas compression device comprises an air compressor or a blower, and the bleed box is a chassis of the air compressor or a chassis of the blower.