Rainproof silencer

Abstract

The utility model relates to a rainproof silencer which comprises a shell and supporting legs installed at the bottom of the shell, two partition plates are fixed in the shell and used for dividing the interior of the shell into an air inlet cavity, an inner cavity and an exhaust cavity, a third pipeline is installed in the inner cavity, and the third pipeline is used for communicating the air inlet cavity with the exhaust cavity. The bottom of the shell is in airtight connection with a first pipeline, and the first pipeline communicates with the air inlet cavity and the exterior of the shell. A non-inner-pipe space of the inner cavity is filled with a fireproof sound absorption material; the top of the shell is in airtight connection with a second pipeline, and the second pipeline communicates with the exhaust cavity and the exterior of the shell; a hole communicating the exhaust cavity with the outside of the shell is formed in the bottom of the exhaust cavity, and a valve is connected to the hole. The rainproof silencer designed by the utility model can be used for solving the problems that the silencer cannot effectively prevent rainwater from infiltrating under severe weather conditions, so that serious mechanical faults are caused, the fireproof performance is poor, and potential safety hazards are easily caused.

Description

Technical Field

[0001] The utility model relates to the technical field of containers, in particular to a rainproof muffler. Background Art

[0002] As crucial power equipment, containerized generator sets offer high mobility and portability. Because generator sets generate considerable noise during extended operation, silencers are often installed in the exhaust system to minimize environmental impact. However, when exposed outdoors, especially when the exhaust port faces upward, rainwater can easily enter the engine exhaust system through the silencer, potentially degrading engine performance or even causing failure.

[0003] Existing mufflers typically employ simple shielding designs for rain protection, such as a rain cap or protective cover installed above the exhaust port. However, these designs often fail to effectively prevent rainwater from seeping in during inclement weather, particularly during strong winds or heavy rain. Rainwater can enter the engine cylinders through the exhaust duct, causing water accumulation inside the engine and potentially leading to serious mechanical failure. Furthermore, existing mufflers also have shortcomings in achieving both good noise reduction and fire resistance. The internal filling material has poor fire resistance, posing a potential safety hazard.

[0004] Therefore, the existing technology has defects and needs to be improved and developed. Summary of the Invention

[0005] The present invention provides a rainproof muffler, addressing the problem that existing mufflers typically employ simple shielding designs for rain protection, often failing to effectively prevent rainwater from seeping in during inclement weather. This is particularly true in high winds or heavy rain, where rainwater can enter the engine cylinders through the exhaust duct, causing water to accumulate inside the engine and potentially lead to serious mechanical failure. Furthermore, existing mufflers also have shortcomings in achieving both good noise reduction and fire resistance. The internal filling material has poor fire resistance, posing a potential safety hazard.

[0006] An embodiment of the present utility model provides a rainproof silencer, comprising a shell and a support leg installed at the bottom of the shell, two partitions are fixed in the shell, the partitions are used to divide the interior of the shell into an air intake chamber, an inner cavity and an exhaust chamber, a third pipe is installed in the inner cavity, and the third pipe is used to connect the air intake chamber and the exhaust chamber; the bottom of the shell is air-tightly connected to a first pipe, and the first pipe connects the air intake chamber with the outside of the shell; the non-inner pipe space of the inner cavity is filled with fire-proof and sound-absorbing material; the top of the shell is air-tightly connected to a second pipe, and the second pipe connects the exhaust chamber with the outside of the shell; a hole connecting the exhaust chamber with the outside of the shell is provided at the bottom of the exhaust chamber, and a valve is connected to the hole.

[0007] Furthermore, one end of the valve that is not connected to the hole is airtightly connected to a U-shaped tube, and the U-shaped tube stores liquid for sealing the valve from the outside of the housing.

[0008] Furthermore, the water outlet of the U-shaped tube is lower than the water inlet of the U-shaped tube.

[0009] Furthermore, a fourth pipe surrounding the first pipe is welded to the outside of the first pipe, and the diameter of the fourth pipe is larger than the diameter of the first pipe.

[0010] Furthermore, one end of the third pipe located in the exhaust chamber is connected to a fifth pipe, the fifth pipe is an oblique-mouth pipe, and the long side of the fifth pipe is close to the second pipe.

[0011] Furthermore, flanges of the same specifications are installed on the ends of the first pipe and the second pipe that are not connected to the shell.

[0012] Furthermore, when two shells are combined, the first pipe of one shell is connected to the flange of the second pipe of the other shell through a flange, and the length of the support leg is equal to the distance between the two shells.

[0013] Furthermore, the partition and the shell are fixed by welding, and the welding method of the partition and the shell is full welding.

[0014] Furthermore, the inner wall of the shell is covered with at least one layer of fireproof and sound-absorbing material.

[0015] Furthermore, the bottom of the exhaust cavity is an inclined surface, and the closer the bottom of the exhaust cavity is to the inner cavity, the higher the height of the inclined surface is.

[0016] Beneficial effects:

[0017] It can be seen from the above technical solutions that the utility model provides a rainproof silencer with excellent rainproof performance, significant noise reduction effect, and fireproof function. Through the reasonable layout of the internal chamber and pipelines, the noise of the generator set exhaust is effectively reduced and the smoothness of the airflow is improved. The use of U-tube and liquid sealing design can reliably prevent rainwater from entering the engine exhaust system and avoid mechanical failures caused by rainwater entering. In addition, the present invention also improves the durability and safety of the silencer through the use of fireproof and sound-absorbing materials and the improvement of the shell structure. It is suitable for various complex outdoor environments and meets the needs of long-term stable operation of the generator set.

[0018] It should be appreciated that all combinations of the foregoing concepts, as well as additional concepts described in greater detail below, to the extent such concepts are not mutually inconsistent, can be considered to be part of the inventive subject matter of this disclosure.

[0019] The foregoing and other aspects, embodiments, and features of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as features and / or beneficial effects of the exemplary embodiments, will become apparent from the following description or through practice of specific embodiments according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are not drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For clarity, not every component is labeled in every figure. Embodiments of various aspects of the present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0021] Figure 1 This is a bottom view of a rainproof silencer in an embodiment of the present application.

[0022] Figure 2 This is a front view of a rainproof muffler in an embodiment of the present application.

[0023] Figure 3 This is a cross-sectional view of a rainproof muffler in an embodiment of the present application.

[0024] Figure 4 This is a cross-sectional view of a rainproof muffler in an embodiment of the present application.

[0025] Description of Figure Numbers:

[0026] Shell 1; support leg 2; partition 3; first pipe 4; second pipe 5; third pipe 6; valve 7; U-shaped pipe 8; fourth pipe 9; fifth pipe 10. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs.

[0028] The words "first", "second" and similar terms used in the patent specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular form "a" or "an" shall not be construed as "a" or "an";

[0029] The words “a”, “an”, “the” and the like do not denote a limitation of quantity, but rather denote the presence of at least one.

[0030] Words such as "include" or "comprising" mean that the elements or objects preceding the word "include" or "comprising" include the features, integers, steps, operations, elements, and / or components listed after the word "include" or "comprising", and do not exclude the existence or addition of one or more other features, integers, steps, operations, elements, components, and / or combinations thereof. Words such as "upper", "lower", "left", and "right" are used only to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0031] Existing mufflers typically employ a simple shielding design for rain protection, often failing to effectively prevent rainwater from seeping in during inclement weather. This is particularly true in high winds or heavy rain, where rainwater can enter the engine cylinders through the exhaust duct, leading to water accumulation inside the engine and potentially serious mechanical failure. Furthermore, existing mufflers also have shortcomings in achieving both sound attenuation and fire resistance. The internal filling material has poor fire resistance, posing a potential safety hazard.

[0032] In view of this, the embodiment of the present invention provides a rainproof muffler, referring to Figures 1 to 3, including a shell 1 and a support leg 2 installed at the bottom of the shell 1, two partitions 3 are fixed in the shell 1, the partition 3 is used to divide the interior of the shell 1 into an air inlet chamber, an inner chamber and an exhaust chamber, and a third pipe 6 is installed in the inner chamber, and the third pipe 6 is used to connect the air inlet chamber and the exhaust chamber; the bottom of the shell 1 is airtightly connected to a first pipe 4, and the first pipe 4 connects the air inlet chamber with the outside of the shell 1; the non-inner pipe space in the inner chamber is filled with fire-proof and sound-absorbing material; the top of the shell 1 is airtightly connected to a second pipe 5, and the second pipe 5 connects the exhaust chamber with the outside of the shell 1; a hole connecting the exhaust chamber and the outside of the shell 1 is opened at the bottom of the exhaust chamber, and a valve 7 is connected to the hole.

[0033] In some other embodiments, the shell 1 is welded from plates and is cylindrical in shape to save space. The third pipe 6 is made of metal or fiberglass. The shape of the third pipe 6 is not limited to a straight cylinder. The size and length can be adjusted according to the actual sound-absorbing effect, thereby affecting and controlling the propagation and reduction of sound waves. In addition, the number of third pipes 6 is more than one, and multiple third pipes 6 are set to disperse the propagation, further achieving sound absorption. In some other embodiments, when the gas is discharged into the atmosphere, the second pipe 5 for discharging the gas into the atmosphere is also connected to a smoke exhaust pipe. The smoke exhaust pipe is an inclined pipe, and the closer to the shell 1, the shorter the pipe wall of the smoke exhaust pipe is, so that the longer pipe wall of the smoke exhaust pipe is used to block rain.

[0034] By installing a partition 3 within the housing 1, the housing 1 is divided into an intake chamber, an inner chamber, and an exhaust chamber, forming a multi-chamber structure. This structural design effectively isolates the intake and exhaust air, preventing the noise generated by airflow passing directly through the muffler and enhancing the muffler effect. Furthermore, a third pipe 6 within the inner chamber connects the intake and exhaust chambers, ensuring smooth airflow throughout the multiple chambers and further reducing noise. This design also optimizes the airflow path and reduces exhaust pressure loss through a rational chamber and pipe layout.

[0035] In some embodiments, the end of the valve 7 that is not connected to the hole is airtightly connected to a U-shaped tube 8, and the U-shaped tube 8 stores liquid for sealing the valve 7 from the outside of the housing 1. By connecting the U-shaped tube 8 with liquid at the bottom of the exhaust chamber, water can be used directly as the liquid, and the passage between the valve 7 and the outside is blocked by the liquid, effectively preventing rainwater from entering the exhaust chamber and the engine cylinder through the hole. The presence of the liquid forms a natural closed barrier. When smoke needs to be discharged, there is pressure in the exhaust chamber, and the liquid is used to achieve sealing to prevent smoke leakage, making the muffler more reliable in terms of rain protection. The U-shaped tube 8 carries the valve 7 and the liquid. Normally, the valve 7 is open. If water enters the exhaust chamber, when the partition 3 is fully welded, the water can be discharged directly from the valve 7 and the U-shaped tube 8, preventing the water from flowing through the inner cavity and the air intake cavity and then entering the generator set, effectively achieving timely drainage and ensuring the stability and safety of the device.

[0036] In some embodiments, the outlet of the U-shaped tube 8 is lower than the inlet of the U-shaped tube 8. This structural design further optimizes the liquid sealing effect, ensuring that even under external airflow or slight rain pressure, the liquid remains within the U-shaped tube 8 and does not flow back or overflow due to external factors. This design also enhances the stability of the U-shaped tube 8 in blocking rainwater and preventing gas backflow.

[0037] In some embodiments, a fourth pipe 9 is welded to the outside of the first pipe 4, surrounding the first pipe 4. The fourth pipe 9 has a larger diameter than the first pipe 4. The larger diameter of the fourth pipe 9 welded to the outside of the first pipe 4 provides an additional layer of protection for the air intake path of the air intake chamber. This design not only increases the structural strength of the muffler and reduces vibration and noise when gas passes through the pipe, but also forms a rain shield. When it rains, rainwater flows directly down the outer wall of the fourth pipe 9, further preventing rainwater from accumulating and entering the flange. This prevents rainwater from entering the generator set through the flange when the flanges are connected, thereby enhancing the waterproof effect.

[0038] In some embodiments, the third duct 6 is connected to a fifth duct 10 at one end of the exhaust chamber. The fifth duct 10 is an oblique-ended duct, with its long side adjacent to the second duct 5. The third duct 6 is connected to the exhaust chamber through the fifth oblique-ended duct. This design effectively prevents the airflow from directly impacting the exhaust chamber wall, reducing the impact noise of the airflow within the exhaust chamber. Furthermore, the long side of the oblique-ended duct is adjacent to the second duct 5, making the airflow smoother during discharge and further reducing exhaust noise. Furthermore, the shape of the fifth duct 10 forms a rain shield, preventing rainwater from entering.

[0039] In some embodiments, flanges of the same specifications are installed on the ends of the first pipe 4 and the second pipe 5 that are not connected to the housing 1 .

[0040] In certain embodiments, when two shells 1 are combined, the first conduit 4 of one shell 1 is flange-connected to the flange of the second conduit 5 of the other shell 1, and the length of the support leg 2 is equal to the distance between the two shells 1. When further muffler reduction is required, at least two shells 1 can be combined to extend the muffler path. When two shells 1 are combined, the first conduit 4 and the second conduit 5 are flange-connected to form a multi-shell 1 combination structure. The length of the support leg 2 is designed to be equal to the distance between the two shells 1, providing support and making the muffler more flexible and stable. This design adapts to the needs of equipment use in different environments, facilitates modular application in different situations, and improves the stability of the entire system.

[0041] In certain embodiments, the partition 3 is secured to the shell 1 by welding, and the welding method for the partition 3 and the shell 1 is full welding. This welding method ensures the structural integrity of the internal chamber of the muffler and prevents the partition 3 from loosening or falling off due to vibration or high temperature environments. At the same time, the full welding method ensures the airtightness of the partition 3 and the shell 1, preventing gas from flowing between the intake and exhaust cavities, thereby further improving the muffler effect and the stability of the device. It also prevents rainwater from penetrating.

[0042] In some embodiments, the inner wall of the shell 1 is covered with at least one layer of fireproof and sound-absorbing material. Covering the inner wall of the shell 1 with the fireproof and sound-absorbing material enhances the safety and fireproof performance of the silencer. In the event of unexpected high temperature or fire, the fireproof and sound-absorbing material can effectively block the spread of flames and protect the internal structure from being destroyed. In addition, the material has a good sound absorption effect, which can further reduce the noise generated when the airflow passes through the shell 1 and enhance the overall sound-absorbing effect. The fireproof and sound-absorbing material on the inner wall of the shell 1 and the fireproof and sound-absorbing material filled in the inner cavity are at least one of glass wool, rock wool, ceramic fiberboard, gypsum board and inorganic fiber material.

[0043] In some embodiments, the bottom of the exhaust cavity is an inclined surface, with the bottom of the exhaust cavity increasing in height as it approaches the inclined surface of the inner cavity. This design facilitates the drainage of rainwater, preventing water from accumulating within the exhaust cavity, thereby improving rainproofing. Furthermore, the inclined surface guides airflow, reducing airflow disturbances at the bottom of the exhaust cavity and reducing exhaust noise.

[0044] In summary, the utility model provides a rainproof silencer with excellent rainproof performance, significant noise reduction effect, and fireproof function. Through the reasonable layout of the internal chamber and pipelines, the noise of the generator set exhaust is effectively reduced and the smoothness of the airflow is improved. The use of the U-tube 8 and the liquid sealing design can reliably prevent rainwater from entering the engine exhaust system and avoid mechanical failures caused by the entry of rainwater. In addition, the present invention also improves the durability and safety of the silencer through the use of fireproof and sound-absorbing materials and the improvement of the shell 1 structure. It is suitable for various complex outdoor environments and meets the needs of long-term stable operation of the generator set.

[0045] While the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Persons skilled in the art will readily appreciate that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A rainproof muffler, comprising a housing and a support foot mounted on the bottom of the housing, characterized in that: Two partitions are fixed in the shell, and the partitions are used to divide the interior of the shell into an air inlet chamber, an inner chamber and an exhaust chamber. A third pipe is installed in the inner chamber, and the third pipe is used to connect the air inlet chamber and the exhaust chamber; the bottom of the shell is air-tightly connected to a first pipe, and the first pipe connects the air inlet chamber with the outside of the shell; the non-inner tube space of the inner chamber is filled with fire-proof and sound-absorbing material; the top of the shell is air-tightly connected to a second pipe, and the second pipe connects the exhaust chamber with the outside of the shell; the bottom of the exhaust chamber is provided with a hole connecting the exhaust chamber with the outside of the shell, and the hole is connected to a valve.

2. A rainproof muffler according to claim 1, characterized in that: One end of the valve not connected to the hole is air-tightly connected to a U-shaped tube, and the U-shaped tube stores liquid for sealing the valve and the outside of the housing.

3. A rainproof muffler according to claim 2, characterized in that: The water outlet of the U-shaped tube is lower than the water inlet of the U-shaped tube.

4. A rainproof muffler according to claim 3, characterized in that: A fourth pipe surrounding the first pipe is welded to the outside of the first pipe, and the diameter of the fourth pipe is larger than that of the first pipe.

5. The rainproof muffler according to claim 4, characterized in that: One end of the third pipe located in the exhaust cavity is connected to a fifth pipe. The fifth pipe is an oblique-mouth pipe, and the long side of the fifth pipe is close to the second pipe.

6. The rainproof muffler according to claim 5, characterized in that: The ends of the first pipe and the second pipe that are not connected to the shell are both installed with flanges of the same specifications.

7. The rainproof muffler according to claim 6, characterized in that: When two shells are combined, the first pipe of one shell is connected to the flange of the second pipe of the other shell through a flange, and the length of the support leg is equal to the distance between the two shells.

8. The rainproof silencer according to claim 7, characterized in that: The partition and the shell are fixed by welding, and the partition and the shell are welded by full welding.

9. The rainproof silencer according to claim 8, characterized in that: The inner wall of the shell is covered with at least one layer of fireproof and sound-absorbing material.

10. The rainproof silencer according to claim 9, characterized in that: The bottom of the exhaust cavity is an inclined surface, and the closer the bottom of the exhaust cavity is to the inner cavity, the higher the height of the inclined surface is.

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