A generator set having a two-stage muffler

Abstract

This utility model relates to a generator set with a two-stage muffler, including a chassis, a generator assembly, and a muffler assembly. The generator assembly is mounted on the chassis and includes an engine and a generator, with the engine connected to the generator. The muffler assembly includes a first muffler, a muffler pipe, and a second muffler. The air inlet of the first muffler is connected to the exhaust port of the generator, and the exhaust port of the first muffler is connected to the air inlet of the second muffler through the muffler pipe. The exhaust port of the second muffler is connected to the outside air, and the second muffler is mounted on the chassis. The above technical solution uses two first and second mufflers connected in series. The first muffler can precisely control high-frequency and low-frequency noise, while the second muffler reduces noise within a certain frequency range. The dual-stage muffler maintains excellent noise reduction capabilities for mid-to-high frequency noise while improving low-frequency performance, thus enhancing the comfort of the generator assembly's operating environment.

Description

Technical Field

[0001] This utility model relates to the field of power generation component technology, and in particular to a generator set with a two-stage silencer. Background Technology

[0002] Existing power generation modules generally employ a single-stage silencer structure, which is effective in suppressing mid-to-high frequency noise but almost ineffective against low-frequency noise, thus limiting the overall noise reduction effect. Low-frequency noise is prone to causing structural resonance and has strong penetrating power, affecting the comfort of the operating environment of the power generation modules. Utility Model Content

[0003] Therefore, there is a need for a generator set with a two-stage silencer to address the problem that a single-stage silencer structure is almost ineffective against low-frequency noise, resulting in limited overall noise reduction. Low-frequency noise is prone to causing structural resonance and has strong penetrating power, affecting the comfort of the operating environment of the power generation components.

[0004] To achieve the above objectives, this utility model provides a generator set with a two-stage silencer, comprising:

[0005] Chassis;

[0006] A power generation assembly is mounted on the chassis. The power generation assembly includes an engine and a generator, with the engine and generator connected together.

[0007] The muffler assembly includes a first muffler, a muffler pipe, and a second muffler. The air inlet of the first muffler is connected to the exhaust port of the generator. The exhaust port of the first muffler is connected to the air inlet of the second muffler through the muffler pipe. The exhaust port of the second muffler is connected to the outside air. The second muffler is mounted on the chassis.

[0008] Unlike existing technologies, the above technical solution incorporates two silencers connected in series: a first silencer and a second silencer. The first silencer precisely controls high-frequency (10Hz–20kHz) and low-frequency noise, while the second silencer reduces noise within a certain frequency range (20Hz–12.5kHz). This dual-stage silencer maintains excellent noise reduction capabilities for mid-to-high frequencies while improving low-frequency performance, thereby enhancing the comfort of the operating environment for the power generation components.

[0009] As one embodiment of this utility model, the generator set with two-stage silencers also includes a housing, in which a power generation component and a silencer component are installed. The housing includes a top plate, and the first silencer is installed on the inner side of the top plate.

[0010] In this way, by setting up a casing to completely enclose the generator set with two-stage silencers, noise can be reduced to a certain extent. The first silencer is also fixed to the inside of the top plate to prevent displacement during transportation or use, which would affect its operation.

[0011] As one embodiment of this utility model, the muffler is L-shaped and includes a first section extending along the length direction of the shell and a second section extending along the height direction of the shell. The connection between the first section and the exhaust port of the first muffler is a first corrugated pipe.

[0012] Thus, by incorporating a first bellows with a certain amount of expansion and contraction, the position of the first muffler along the length of the housing can be finely adjusted, ensuring that the first muffler does not interfere with other components and can be installed on the inner side of the top plate. Furthermore, the first bellows can also buffer vibrations of the engine along the length of the housing.

[0013] As one embodiment of this utility model, the muffler assembly also includes a second corrugated pipe extending along the height direction of the housing, and the air inlet of the first muffler is connected to the exhaust port of the generator through the second corrugated pipe.

[0014] Thus, by incorporating a second bellows, the position of the first muffler along the height of the housing can be finely adjusted. In conjunction with the first bellows, the position of the first muffler can be adjusted in multiple dimensions, making its installation easier. Furthermore, the second bellows can also buffer engine vibrations along the height of the housing.

[0015] As one embodiment of this utility model, the housing also includes a U-shaped mounting base, which is installed on the inner side of the top plate, and the first muffler is installed on the U-shaped mounting base.

[0016] Thus, the U-shaped mounting bracket facilitates the installation and fixation of the first muffler.

[0017] As one embodiment of this utility model, the silencing assembly also includes a mounting plate and a connector. The mounting plate is mounted on the first silencer, the upper end of the connector is connected to the U-shaped mounting base, and the lower end of the connector is connected to the mounting plate.

[0018] Thus, by connecting the connector to the U-shaped mounting base and the mounting plate, it is easy to install and fix the first muffler on the U-shaped mounting base.

[0019] As one embodiment of this utility model, the noise reduction assembly further includes a first fastener and a second fastener. The upper end of the connector has a first waist-shaped hole, and the U-shaped mounting base has a first mounting hole. The first mounting hole and the first waist-shaped hole are connected by the first fastener. The lower end of the connector has a second waist-shaped hole, and the mounting plate has a second mounting hole. The second mounting hole and the second waist-shaped hole are connected by the second fastener.

[0020] Thus, the position of the first silencer can be precisely adjusted by matching the oblong hole with the mounting hole, avoiding stress concentration in the pipeline due to installation errors. Furthermore, the fastener connection facilitates the installation and removal of the first silencer.

[0021] As one embodiment of this utility model, the mounting base has two or more second mounting holes spaced apart along the length of the housing.

[0022] Thus, the mounting base has two or more second mounting holes spaced apart along the length of the housing, which can adjust the position of the first muffler fixed on the mounting base, so that the first muffler has more positions to be installed.

[0023] In one embodiment of this utility model, the air inlet of the first muffler and the exhaust port of the generator, as well as the exhaust port of the first muffler and the air inlet of the muffler pipe, are connected by flanges.

[0024] In this way, the flange connection ensures airtightness, thereby preventing the leakage of high-temperature exhaust gas; on the other hand, it facilitates the installation and maintenance of the first silencer.

[0025] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0026] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.

[0027] In the accompanying drawings of the instruction manual:

[0028] Figure 1 This is a partial structural diagram of a generator set with a two-stage muffler according to an embodiment of this application;

[0029] Figure 2 for Figure 1 Enlarged view of A in the middle;

[0030] Figure 3 This is a schematic diagram of the structure of a noise reduction component according to an embodiment of this application;

[0031] Figure 4 for Figure 3 Enlarged view of B in the middle;

[0032] Figure 5This is a structural schematic diagram of a noise reduction component according to one embodiment of this application from another perspective.

[0033] The reference numerals used in the above figures are explained as follows:

[0034] 1-Shell; 11-Top plate; 12-U-shaped mounting base; 121-First mounting hole; 2-Silencer assembly; 21-First silencer; 22-Silencer pipe; 221-First section; 2211-First bellows; 222-Second section; 23-Second silencer; 24-Second bellows; 25-Mounting plate; 251-Second mounting hole; 26-Connector; 261-First oblong hole; 262-Second oblong hole; 27-Exhaust pipe; X-Length direction of the shell; Y-Height direction of the shell. Detailed Implementation

[0035] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0036] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0037] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0038] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0039] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0040] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar open-ended expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0041] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0042] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0043] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral arrangement; it can be a direct connection or an indirect connection through an intermediate medium; it can be a relationship of two components combined together, an interaction relationship between two components, or a connection within two structures. Those skilled in the art to which this application pertains can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0044] For ease of explanation, such as Figures 1 to 3 and Figure 5 As shown, the direction of arrow X is the length direction of the shell, and the direction of arrow Y is the height direction of the shell.

[0045] Existing power generation modules generally employ a single-stage silencer structure, which is effective in suppressing mid-to-high frequency noise but almost ineffective against low-frequency noise, thus limiting the overall noise reduction effect. Low-frequency noise is prone to causing structural resonance and has strong penetrating power, affecting the comfort of the operating environment of the power generation modules.

[0046] In view of this, this application provides a generator set with a two-stage muffler, including a chassis, a generator assembly, and a muffler assembly 2. The generator assembly is mounted on the chassis and includes an engine and a generator, with the engine connected to the generator. The muffler assembly 2 includes a first muffler 21, a muffler pipe 22, and a second muffler 23. The air inlet of the first muffler 21 is connected to the exhaust port of the generator, and the exhaust port of the first muffler 21 is connected to the air inlet of the second muffler 23 through the muffler pipe 22. The second muffler 23 is mounted on the chassis.

[0047] According to some embodiments of this application, please refer to Figures 1 to 5 This embodiment relates to a generator set with a two-stage muffler, including a chassis, a generator assembly, and a muffler assembly 2. The generator assembly is mounted on the chassis and includes an engine and a generator, with the engine connected to the generator. The muffler assembly 2 includes a first muffler 21, a muffler pipe 22, and a second muffler 23. The air inlet of the first muffler 21 is connected to the exhaust port of the generator, and the exhaust port of the first muffler 21 is connected to the air inlet of the second muffler 23 through the muffler pipe 22. The exhaust port of the second muffler 23 is connected to the outside air, and the second muffler 23 is mounted on the chassis.

[0048] The chassis is a steel frame that supports the entire machine, with rubber shock-absorbing pads at the bottom, and the power generation components are installed on the shock-absorbing pads.

[0049] The engine and generator are coaxially connected and fixed to the chassis. The generator set can be a diesel generator set, therefore the engine is a diesel engine. The generator assembly also includes a radiator for cooling the engine.

[0050] The muffler assembly 2 includes a two-stage muffler. The first muffler 21 can employ a complex structural design (such as multi-stage expansion chambers and composite sound-absorbing materials), with a noise reduction error controlled within ±1.1dB, suitable for precise control of high-frequency (10Hz–20kHz) and low-frequency noise. The second muffler 23, however, allows a noise reduction error of ±1.4dB, has a narrower frequency range (20Hz–12.5kHz), and is less effective at handling low-frequency noise. The exhaust port of the second muffler 23 is connected to the outside air. Specifically, the exhaust port of the second muffler 23 is connected to the exhaust pipe 27.

[0051] The above technical solution incorporates two silencers connected in series: a first silencer 21 and a second silencer 23. The first silencer 21 precisely controls high-frequency (10Hz–20kHz) and low-frequency noise, while the second silencer 23 reduces noise within a certain frequency range (20Hz–12.5kHz). This dual-stage silencer maintains excellent noise reduction capabilities for mid-to-high frequencies while improving low-frequency performance, thereby enhancing the comfort of the operating environment for the power generation components.

[0052] like Figure 1 As shown, the generator set with two-stage silencers also includes a housing 1, in which a power generation component and a silencer component 2 are installed. The housing 1 includes a top plate 11, and the first silencer 21 is installed on the inner side of the top plate 11.

[0053] The housing 1 also includes two side plates and a bottom plate, with the side plates installed between the top plate 11 and the bottom plate.

[0054] Thus, by setting the housing 1 to completely enclose the generator set with two-stage silencers, a certain amount of noise can be reduced. The first silencer 21 is fixed to the inside of the top plate 11 to prevent the first silencer 21 from shifting during transportation or use and affecting its use.

[0055] like Figure 3 and Figure 5 As shown, the muffler 22 is L-shaped and includes a first section 221 extending along the length direction X of the shell and a second section 222 extending along the height direction Y of the shell. The connection between the first section 221 and the exhaust port of the first muffler 21 is a first bellows 2211.

[0056] The first section 221 and the second section 222 are connected by an arc transition, which better avoids other components. Optionally, the silencer pipe 22 is a one-piece pipe. The first corrugated pipe 2211 can be made of stainless steel.

[0057] Thus, by setting the first bellows 2211, which has a certain amount of expansion and contraction, the position of the first muffler 21 along the length X of the housing can be finely adjusted, so that the first muffler 21 does not affect other components and can be installed on the inner side of the top plate 11. In addition, the first bellows 2211 can also buffer the vibration of the engine along the length X of the housing.

[0058] like Figure 3 and Figure 5 As shown, the muffler assembly 2 also includes a second bellows 24 extending along the height direction Y of the housing, and the air inlet of the first muffler 21 is connected to the exhaust port of the generator through the second bellows 24.

[0059] The second corrugated pipe 24 can be made of stainless steel. Preferably, the second corrugated pipe 24 is connected to the generator exhaust port via a flange to prevent leakage of high-temperature exhaust gas.

[0060] Thus, by setting the second bellows 24, the position of the first muffler 21 along the height direction Y of the housing can be finely adjusted. In conjunction with the first bellows 2211, the position of the first muffler 21 can be adjusted in multiple dimensions, making the installation of the first muffler 21 more convenient. Furthermore, the second bellows 24 can also buffer the vibration of the engine along the height direction Y of the housing.

[0061] like Figure 1 and Figure 2 As shown, the housing 1 also includes a U-shaped mounting base 12, which is installed on the inner side of the top plate 11, and the first muffler 21 is installed on the U-shaped mounting base 12.

[0062] The U-shaped mounting base 12 can be directly welded to the inside of the top plate 11, or installed on the inside of the top plate 11 by bolts.

[0063] Thus, the U-shaped mounting base 12 facilitates the installation and fixation of the first muffler 21.

[0064] like Figure 2 As shown, the muffler assembly 2 also includes a mounting plate 25 and a connector 26. The mounting plate 25 is mounted on the first muffler 21, the upper end of the connector 26 is connected to the U-shaped mounting base 12, and the lower end of the connector 26 is connected to the mounting plate 25.

[0065] The upper end of the connector 26 can be detachably connected to the U-shaped mounting base 12 by bolts, and the lower end of the connector 26 can be detachably connected to the mounting plate 25 by bolts. In some embodiments, multiple connectors 26 may be provided. In this embodiment, two connectors 26 are provided.

[0066] Thus, by connecting the connector 26 to the U-shaped mounting base 12 and the mounting plate 25, it is convenient to install and fix the first muffler 21 on the U-shaped mounting base 12.

[0067] like Figures 2 to 4 As shown, the noise reduction assembly 2 also includes a first fastener and a second fastener. The upper end of the connector 26 is provided with a first oblong hole 261, and the U-shaped mounting base 12 is provided with a first mounting hole 121. The first mounting hole 121 and the first oblong hole 261 are connected by the first fastener. The lower end of the connector 26 is provided with a second oblong hole 262, and the mounting plate 25 is provided with a second mounting hole 251. The second mounting hole 251 and the second oblong hole 262 are connected by the second fastener.

[0068] The first oblong hole 261 allows the first muffler 21 to slide and be positioned along the length of the housing 1, while the second oblong hole 262 allows the first muffler 21 to slide and be positioned along the height of the housing 1. Both the first and second fasteners can be bolts, screws, or studs, etc. Optionally, the connector 26 can be L-shaped for easy connection.

[0069] Thus, the position of the first silencer 21 can be precisely adjusted by the cooperation of the oblong hole and the mounting hole, avoiding stress concentration in the pipeline due to installation errors. In addition, the fastener connection facilitates the installation and removal of the first silencer 21.

[0070] like Figure 2 As shown, the mounting base has two or more second mounting holes 251 spaced apart along the length X direction of the housing.

[0071] Thus, the mounting base has two or more second mounting holes 251 spaced apart along the length X of the housing, which can adjust the position of the first muffler 21 fixed on the mounting base, so that the first muffler 21 has more positions to be installed.

[0072] like Figure 3 and Figure 5 As shown, the air inlet of the first muffler 21 and the exhaust port of the generator, as well as the exhaust port of the first muffler 21 and the air inlet of the muffler pipe 22, are connected by flanges.

[0073] In this way, the flange connection ensures airtightness, thereby preventing the leakage of high-temperature exhaust gas; on the other hand, it facilitates the installation and maintenance of the first silencer 21.

[0074] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of patent protection for this utility model.

Claims

1. A generator set having a two-stage silencer, characterized by, include: Chassis; A power generation assembly, mounted on the chassis, comprising an engine and a generator, wherein the engine is connected to the generator; The muffler assembly includes a first muffler, a muffler pipe, and a second muffler. The air inlet of the first muffler is connected to the exhaust port of the generator. The exhaust port of the first muffler is connected to the air inlet of the second muffler through the muffler pipe. The exhaust port of the second muffler is connected to the outside air. The second muffler is mounted on the chassis.

2. The generator set with two-stage silencer according to claim 1, characterized in that, The generator set with a two-stage muffler also includes a housing, in which the power generation component and the muffler component are installed. The housing includes a top plate, and the first muffler is installed on the inner side of the top plate.

3. The generator set having a two-stage muffler according to claim 2, characterized by, The muffler is L-shaped and includes a first section extending along the length of the housing and a second section extending along the height of the housing. The connection between the first section and the exhaust port of the first muffler is a first corrugated pipe.

4. The generator set having a two-stage muffler according to claim 3, characterized by, The muffler assembly also includes a second bellows extending along the height direction of the housing, and the air inlet of the first muffler is connected to the exhaust port of the generator through the second bellows.

5. The generator set having a two-stage muffler according to claim 2, characterized by, The housing also includes a U-shaped mounting base, which is installed on the inner side of the top plate, and the first muffler is installed on the U-shaped mounting base.

6. The generator set having a two-stage muffler according to claim 5, characterized by, The noise reduction assembly also includes a mounting plate and a connector. The mounting plate is mounted on the first muffler, the upper end of the connector is connected to the U-shaped mounting base, and the lower end of the connector is connected to the mounting plate.

7. The generator set having a two-stage silencer according to claim 6, characterized by, The noise reduction assembly further includes a first fastener and a second fastener. The upper end of the connector has a first waist-shaped hole, and the U-shaped mounting base has a first mounting hole. The first mounting hole and the first waist-shaped hole are connected by the first fastener. The lower end of the connector has a second waist-shaped hole, and the mounting plate has a second mounting hole. The second mounting hole and the second waist-shaped hole are connected by the second fastener.

8. The generator set having a two-stage silencer according to claim 7, characterized by, The mounting base has two or more second mounting holes spaced apart along the length of the housing.

9. The generator set having a two-stage silencer according to claim 1, characterized by, The air inlet of the first muffler and the exhaust port of the generator, as well as the exhaust port of the first muffler and the air inlet of the muffler pipe, are connected by flanges.

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