A water-cooled muffler
By incorporating a cooling chamber and serpentine piping within the muffler, the water-cooled muffler solves the problem of temperature buildup caused by high-temperature exhaust, thereby improving the muffler's cooling and infrared protection functions and extending the equipment's service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI QINGHUA TAIHAO SANBO ELECTRICAL MACHINE
- Filing Date
- 2025-07-30
- Publication Date
- 2026-06-26
AI Technical Summary
Silencers are prone to heat buildup under high-temperature exhaust and mechanical vibration, which affects the performance of sound-absorbing materials and the lifespan of the structure. At the same time, it increases the intensity of infrared radiation, becoming a safety hazard for the equipment.
Design a water-cooled silencer, comprising a silencer body, a flue gas inlet pipe, a flue gas outlet pipe, a water inlet pipe, and a water outlet pipe. It has an internal silencing chamber and a cooling chamber. High-temperature gas is introduced through the flue gas inlet pipe for silencing, and cold water is introduced through the cooling components and the water inlet pipe for cooling. The cooling components are set as serpentine pipes or water jackets to extend the flow path and improve heat exchange efficiency.
It effectively reduces muffler temperature, improves the equipment's infrared protection function, extends structural life, lowers exhaust temperature, and reduces the risk of infrared detection.
Smart Images
Figure CN224413741U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of silencer technology, and more specifically, to a water-cooled silencer. Background Technology
[0002] As an important noise reduction device, the silencer is designed to attenuate sound waves by altering the airflow channel structure. Specifically, silencers reduce noise levels by incorporating internal baffles, sound-absorbing materials, and other structural elements, utilizing physical mechanisms such as sound wave reflection, interference, and energy absorption. In industrial applications, the performance of the silencer directly affects the operating noise levels of equipment, especially in large power equipment such as engine sets, where noise reduction effectiveness has become a key parameter for evaluating the environmental performance of the equipment.
[0003] However, the high-temperature exhaust and mechanical vibrations generated during engine operation cause the muffler body to continuously bear thermal loads and structural stresses. This condition can easily lead to temperature buildup inside the muffler, which may not only reduce the performance of the sound-absorbing materials but also affect the service life of the overall structure. Excessively high surface temperatures will significantly increase the infrared radiation intensity of the entire system, posing a significant safety hazard for equipment that needs to avoid infrared detection. Utility Model Content
[0004] The purpose of this utility model is to provide a water-cooled muffler that can cool the muffler, reduce the exhaust temperature, and improve the infrared protection function of the equipment.
[0005] The embodiments of this utility model can be implemented as follows:
[0006] This utility model provides a water-cooled muffler, including a muffler body, a smoke inlet pipe, a smoke outlet pipe, a water inlet pipe, and a water outlet pipe. The muffler body is provided with a silencing chamber and a cooling chamber. The smoke inlet pipe, the smoke outlet pipe, the water inlet pipe, and the water outlet pipe are provided outside the muffler body. The smoke inlet pipe and the smoke outlet pipe are connected to the silencing chamber. A cooling component is provided in the cooling chamber. The water inlet pipe and the water outlet pipe are respectively connected to the cooling component.
[0007] In an optional embodiment, the exhaust pipe is provided with multiple exhaust ports at intervals.
[0008] In an optional embodiment, the exhaust pipe includes two vertical pipes and one horizontal pipe. One end of the two vertical pipes is connected to the anechoic chamber, and both ends of the horizontal pipe are respectively connected to the ends of the two vertical pipes away from the anechoic chamber. Both the vertical pipes and the horizontal pipe are provided with exhaust ports.
[0009] In an optional embodiment, the anechoic chamber includes a first resonance chamber, a second resonance chamber, and an expansion chamber. The expansion chamber is located between the first resonance chamber and the second resonance chamber. A partition is provided between the first resonance chamber and the expansion chamber, and between the second resonance chamber and the expansion chamber. The anechoic chamber also contains a first pipe, a second pipe, and a third pipe. The first pipe, the second pipe, and the third pipe pass through the two partitions and have openings at both ends. The end of the first pipe located in the second resonance chamber is connected to the smoke inlet pipe, and the end of the third pipe located in the first resonance chamber is connected to the smoke exhaust pipe. The portion of the second pipe located in the expansion chamber has multiple through holes.
[0010] In an optional embodiment, the through hole includes multiple sets of small holes spaced apart along the axial direction of the second pipe, with each set containing multiple small holes arranged circumferentially around the second pipe.
[0011] In an optional embodiment, the cooling component is a serpentine pipe, which is fixedly installed in the cooling chamber, with one end of the serpentine pipe fitting against the outer wall of the silencing chamber.
[0012] In an optional embodiment, the cooling element is a water jacket that surrounds the outside of the anechoic chamber.
[0013] In an optional embodiment, the silencer body is provided with a smoke inlet and a smoke outlet, the smoke inlet pipe and the smoke inlet are detachably connected, and the smoke exhaust pipe and the smoke outlet are detachably connected.
[0014] In an optional embodiment, an asbestos pad is provided between the smoke inlet pipe and the smoke outlet, and between the smoke exhaust pipe and the smoke outlet.
[0015] In an optional embodiment, a filter screen is provided on the exhaust pipe near the smoke outlet.
[0016] The beneficial effects of the water-cooled silencer provided in this embodiment of the invention include:
[0017] This utility model provides a water-cooled muffler comprising a muffler body, an inlet pipe, an exhaust pipe, a water inlet pipe, and a water outlet pipe. The muffler body contains a silencing chamber and a cooling chamber. The inlet pipe, exhaust pipe, water inlet pipe, and water outlet pipe are located outside the muffler body. The inlet pipe and exhaust pipe communicate with the silencing chamber. A cooling component is installed within the cooling chamber. The water inlet pipe and water outlet pipe are respectively connected to the cooling component. High-temperature gases generated by the engine enter the silencing chamber through the inlet pipe, where noise is reduced. Simultaneously, cold water is introduced into the cooling component through the water inlet pipe to cool the silencing chamber, thereby lowering the gas temperature in the exhaust pipe. This utility model can cool the muffler, reduce the exhaust temperature, and improve the equipment's infrared protection function. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the structure of the water-cooled muffler provided in this embodiment;
[0020] Figure 2 This is a schematic diagram of the working structure of the water-cooled muffler provided in this embodiment;
[0021] Figure 3 This is a schematic diagram of the structure of the muffler body provided in this embodiment;
[0022] Figure 4 This is a schematic diagram of the anechoic chamber provided in this embodiment;
[0023] Figure 5 This is a schematic diagram of the cooling system provided in this embodiment.
[0024] Icons: 100-Water-cooled muffler; 10-Muffler body; 11-Muffler chamber; 111-First resonance chamber; 112-Expansion chamber; 113-Second resonance chamber; 114-First pipe; 115-Second pipe; 116-Third pipe; 117-Baffle; 12-Cooling chamber; 13-Smoke inlet; 14-Smoke outlet; 15-Asbestos gasket; 121-Serpentine pipe; 20-Smoke inlet pipe; 30-Smoke exhaust pipe; 31-Smoke outlet; 32-Vertical pipe; 33-Horizontal pipe; 40-Water inlet pipe; 50-Water outlet pipe; 200-Engine. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0028] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0029] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0030] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0031] The following describes in detail the overall structure, working principle, and technical effects of the water-cooled muffler provided by this utility model through embodiments and in conjunction with the accompanying drawings.
[0032] Please refer to Figures 1-3 The water-cooled muffler 100 provided by this utility model is applied to the engine 200 to reduce noise. The main noise source of the engine 200 is the exhaust noise of compressed air, and the water-cooled muffler 100 is used to reduce the noise of the high-temperature exhaust of the engine 200.
[0033] This water-cooled muffler 100 includes a muffler body 10, an inlet pipe 20, an exhaust pipe 30, a water inlet pipe 40, and a water outlet pipe 50. The muffler body 10 contains a silencing chamber 11 and a cooling chamber 12. The inlet pipe 20, exhaust pipe 30, water inlet pipe 40, and water outlet pipe 50 are located outside the muffler body 10. The inlet pipe 20 and exhaust pipe 30 are connected to the silencing chamber 11. Cooling components are installed inside the cooling chamber 12. The water inlet pipe 40 and water outlet pipe 50 are connected to the cooling components. It can be understood that the inlet pipe 20 is connected to the engine 200 and is used to guide the high-temperature combustion gases from the engine 200 into the silencing chamber 11 for silencing treatment. After silencing, the gases are discharged through the exhaust pipe. Simultaneously, cold water is introduced into the cooling components through the water inlet pipe 40, and the cooling components exchange heat with the silencing chamber 11, causing the silencing chamber 11 to cool down, thereby reducing the gas temperature and the exhaust temperature of the exhaust pipe. This invention can cool down the muffler, reduce the exhaust temperature, and improve the infrared protection function of the equipment.
[0034] Specifically, in this embodiment, the engine 200 is a diesel engine. The high-temperature gas generated by the combustion of diesel fuel enters the silencing chamber 11 through the smoke inlet pipe 20, and is discharged from the exhaust pipe 30 after cooling. In other embodiments, the engine 200 can be of other types, such as a gasoline engine, and this invention does not limit this to that type.
[0035] Furthermore, in this embodiment, the exhaust pipe 30 is designed in a segmented form, with multiple exhaust ports 31 spaced apart on the exhaust pipe 30. By discharging the cooled flue gas through the exhaust ports 31 of the exhaust pipe 30 in segments, heat concentration is avoided, reducing the probability of being detected by infrared devices.
[0036] Specifically, in this embodiment, the exhaust pipe 30 includes two vertical pipes 32 and one horizontal pipe 33. One end of each of the two vertical pipes 32 is connected to the anechoic chamber 11. Both ends of the horizontal pipe 33 are connected to the ends of the two vertical pipes 32 away from the anechoic chamber 11. Both the vertical pipes 32 and the horizontal pipe 33 are provided with exhaust ports 31. It can be understood that the exhaust pipe 30 has an overall inverted "U" shape, is connected to the silencer body 10, and is connected to the anechoic chamber 11.
[0037] In this embodiment, both the vertical pipe 32 and the horizontal pipe 33 have two smoke exhaust ports 31, and the smoke exhaust pipe 30 has six smoke exhaust ports 31. In other embodiments, the smoke exhaust ports 31 on the vertical pipe 32 and the horizontal pipe 33 can be set as needed, for example, one or more. This utility model does not limit the number of smoke exhaust ports 31 on the smoke exhaust pipe 30.
[0038] Please refer to Figure 4The anechoic chamber 11 includes a first resonant chamber 111, a second resonant chamber 113, and an expansion chamber 112. The expansion chamber 112 is located between the first resonant chamber 111 and the second resonant chamber 113. Partitions 117 are provided between the first resonant chamber 111 and the expansion chamber 112, and between the second resonant chamber 113 and the expansion chamber 112. It is understood that the two partitions 117 divide the interior of the anechoic chamber 11 into three chambers, from left to right: the first resonant chamber 111, the expansion chamber 112, and the second resonant chamber 113. A first conduit 114, a second conduit 115, and a third conduit 116 are also provided within the anechoic chamber 11. The first conduit 114, the second conduit 115, and the third conduit 116 pass through the two partitions 117 and have openings at both ends. It is understood that the first conduit 114, the second conduit 115, and the third conduit 116 connect the two ends of the first resonant chamber 111 and the second resonant chamber 113. The first pipe 114 is located at one end of the second resonance chamber 113 and is connected to the exhaust pipe 30. The third pipe 116 is located at one end of the first resonance chamber 111 and is connected to the exhaust pipe 30. The portion of the second channel located in the expansion chamber 112 has multiple through holes.
[0039] Understandably, high-temperature gas enters the first pipe 114 from the exhaust pipe 30, then enters the first resonant chamber 111 from the first pipe 114. After resonating and weakening low-frequency noise, it enters the second pipe 115, and then enters the middle expansion chamber 112 through the through hole of the second pipe 115. The gas velocity is reduced by the sudden increase in cross-section, causing sound wave reflection and scattering, thus reducing mid-to-low frequency noise. The gas in the expansion chamber 112 enters the second resonant chamber 113 on the right side through the second pipe 115. After resonating in the second resonant chamber 113 and further reducing noise, it is discharged from the exhaust pipe 30 through the third pipe 116.
[0040] By arranging the first pipe 114, the second pipe 115, and the third pipe 116 through the three chambers, the flow path of the high-temperature gas in the silencer chamber 11 is extended, thereby improving the heat exchange efficiency between the cooling water of the cooling component and the high-temperature gas of the silencer, and improving the cooling effect of the gas.
[0041] It is understood that in this embodiment, the first resonance chamber 111 and the second resonance chamber 113 achieve noise reduction by resonating with the gas through vibration.
[0042] Furthermore, in this embodiment, the inner wall of the anechoic chamber 11 is also lined with sound-absorbing cotton, which further improves the noise reduction effect of the anechoic chamber 11.
[0043] Specifically, in this embodiment, the through-hole includes multiple sets of small holes spaced apart along the axis of the second pipe 115. Each set contains multiple small holes arranged around the axis of the second pipe 115. It is understood that this structure allows gas from the second pipe 115 to flow uniformly into the expansion chamber 112, thereby increasing the flow channel volume, reducing gas velocity, and lowering gas pressure, thus reducing noise.
[0044] Please refer to Figure 5 In this embodiment, the cooling component is a serpentine pipe 121. The serpentine pipe 121 is fixedly installed inside the cooling chamber 12. One end of the serpentine pipe 121 is attached to the outer wall of the silencing chamber 11. The inlet pipe 40 and the outlet pipe 50 are respectively connected to the two ends of the serpentine pipe 121, allowing cooling water to circulate along the serpentine pipe 121 and continuously remove heat. By setting up the serpentine pipe 121, the flow path of the cooling water is extended, thereby uniformly exchanging heat and cooling the high-temperature gas in the silencing chamber 11, improving the gas cooling effect. In addition, the volume of the cooling component can be reduced, thereby reducing the overall size of the water-cooled silencer 100.
[0045] Of course, in other embodiments, the cooling element may also be configured as a water jacket that wraps around the outside of the anechoic chamber 11.
[0046] Please continue to refer to Figure 1 Furthermore, in this embodiment, the silencer body 10 is provided with a smoke inlet 13 and a smoke outlet 14. The smoke inlet 13 and the smoke outlet 14 are connected to the silencing chamber 11. The smoke inlet pipe 20 and the smoke inlet 13 are detachably connected. The smoke exhaust pipe 30 and the smoke outlet 14 are detachably connected. Specifically, the smoke inlet pipe 20 and the smoke inlet 13 are connected by a flange, and the smoke exhaust pipe 30 and the smoke outlet 14 are connected by a flange. This arrangement allows the smoke inlet pipe 20 and the smoke exhaust pipe 30 to be detachably connected to the silencer body 10, facilitating the replacement and maintenance of the smoke inlet pipe 20 and the smoke exhaust pipe 30.
[0047] Furthermore, asbestos gaskets 15 are installed between the smoke inlet pipe 20 and the smoke inlet port 13, and between the smoke exhaust pipe 30 and the smoke outlet port 14. It is understandable that by installing the asbestos gaskets 15, the sealing effect between the pipes is improved, preventing gas leakage.
[0048] In this embodiment, a filter screen (not shown) is also provided on the exhaust pipe 30 near the exhaust port 14. When the gas is discharged, it passes through the filter screen, which can adsorb harmful impurities in the gas, ensuring the safe discharge of the gas and preventing environmental pollution.
[0049] The beneficial effects of the water-cooled silencer 100 provided in this embodiment of the present invention include:
[0050] The water-cooled muffler 100 provided by this utility model includes a muffler body 10, an inlet pipe 20, an exhaust pipe 30, a water inlet pipe 40, and a water outlet pipe 50. The muffler body 10 contains a silencing chamber 11 and a cooling chamber 12. The inlet pipe 20, exhaust pipe 30, water inlet pipe 40, and water outlet pipe 50 are located outside the muffler body 10. The inlet pipe 20 and exhaust pipe 30 are connected to the silencing chamber 11. A cooling component is installed inside the cooling chamber 12. The water inlet pipe 40 and water outlet pipe 50 are respectively connected to the cooling component. The high-temperature gas generated by the engine 200 enters the silencing chamber 11 through the inlet pipe 20, and the noise is reduced by the silencing chamber 11. At the same time, cold water is introduced into the cooling component through the water inlet pipe 40 to cool the silencing chamber 11, thereby reducing the gas temperature of the exhaust pipe. This utility model can cool the muffler, reduce the exhaust temperature, and improve the infrared protection function of the equipment.
[0051] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A water-cooled silencer, characterized in that, The device includes a muffler body, a smoke inlet pipe, a smoke outlet pipe, a water inlet pipe, and a water outlet pipe. The muffler body contains a silencing chamber and a cooling chamber. The smoke inlet pipe, the smoke outlet pipe, the water inlet pipe, and the water outlet pipe are located outside the muffler body. The smoke inlet pipe and the smoke outlet pipe are connected to the silencing chamber. The cooling chamber contains a cooling component, and the water inlet pipe and the water outlet pipe are respectively connected to the cooling component.
2. The water-cooled silencer according to claim 1, characterized in that, The exhaust pipe is provided with multiple exhaust ports at intervals.
3. The water-cooled silencer according to claim 2, characterized in that, The exhaust pipe includes two vertical pipes and one horizontal pipe. One end of the two vertical pipes is connected to the anechoic chamber, and the two ends of the horizontal pipe are respectively connected to the ends of the two vertical pipes away from the anechoic chamber. Both the vertical pipes and the horizontal pipe are provided with exhaust ports.
4. The water-cooled silencer according to claim 1, characterized in that, The anechoic chamber includes a first resonance chamber, a second resonance chamber, and an expansion chamber. The expansion chamber is located between the first resonance chamber and the second resonance chamber. A partition is provided between the first resonance chamber and the expansion chamber, and between the second resonance chamber and the expansion chamber. The anechoic chamber also contains a first pipe, a second pipe, and a third pipe. The first pipe, the second pipe, and the third pipe pass through the two partitions and have openings at both ends. The end of the first pipe located in the second resonance chamber is connected to the smoke inlet pipe, and the end of the third pipe located in the first resonance chamber is connected to the smoke exhaust pipe. The portion of the second pipe located in the expansion chamber has multiple through holes.
5. The water-cooled silencer according to claim 4, characterized in that, The through hole includes multiple sets of small holes spaced apart along the axis of the second pipe, with each set containing multiple small holes arranged around the circumference of the second pipe.
6. The water-cooled silencer according to claim 1, characterized in that, The cooling component is a serpentine pipe, which is fixedly installed in the cooling chamber, with one end of the serpentine pipe fitting against the outer wall of the silencing chamber.
7. The water-cooled silencer according to claim 1, characterized in that, The cooling component is a water jacket that surrounds the outside of the anechoic chamber.
8. The water-cooled silencer according to claim 1, characterized in that, The silencer body is provided with a smoke inlet and a smoke outlet. The smoke inlet pipe and the smoke outlet are detachably connected, and the smoke exhaust pipe and the smoke outlet are detachably connected.
9. The water-cooled silencer according to claim 8, characterized in that, An asbestos pad is provided between the smoke inlet pipe and the smoke outlet, and between the smoke exhaust pipe and the smoke outlet.
10. The water-cooled silencer according to claim 8, characterized in that, A filter screen is installed on the exhaust pipe near the smoke outlet.