Silencer structure and engine

Abstract

The utility model provides a silencer structure and an engine, the engine comprises a cylinder body, the silencer structure comprises a silencer body and a silencer cover, the cover body assembly comprises a front cover body and a rear cover body, the front cover body and the rear cover body are detachably connected, an installation cavity with the periphery closed and the two opposite ends open is formed between the front cover body and the rear cover body, the two open ends of the installation cavity are defined to be an air inlet and an air outlet respectively, and the air inlet and the air outlet are formed in the rear cover body and the front cover body respectively. A first heat dissipation path is formed between the air inlet and the air outlet, and the silencer structure body is located on the first heat dissipation path. The air guide port is formed in the front cover body and is used for constructing a second heat dissipation path with the air outlet; the first heat dissipation path and the second heat dissipation path are both used for dissipating heat of the silencer structure body. The technical problem that in the prior art, the temperature of a silencer is too high is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine accessories, especially relates to a muffler structure and engine. BACKGROUND

[0002] With the enhancement of environmental protection consciousness and the increasingly strict emission regulations, higher requirements are put forward for the performance of engines and their related components. Among them, as an important component for reducing engine noise, the muffler, while ensuring the noise reduction effect, how to effectively improve its heat dissipation efficiency and prolong its service life has become an important research direction. The traditional muffler structure usually includes a closed shell and internal sound-absorbing material, although it can reduce noise to a certain extent, but its heat dissipation performance is poor, which is easy to cause high temperature, affecting the overall performance and life of the engine. Especially in some high-performance engines, due to the generation of a large amount of heat during work, the traditional muffler structure is difficult to meet the demand of rapid heat dissipation, which may cause the muffler body and the connected components (such as the cylinder body) to overheat, thereby affecting the working efficiency and reliability of the engine. In addition, the high temperature may also cause the aging of the internal materials of the muffler to accelerate, reducing the noise reduction effect and service life of the muffler. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model provides a muffler structure and engine, which solves the technical problem of high temperature of the muffler in the prior art.

[0004] According to the embodiments of the utility model, the following technical scheme is adopted:

[0005] A muffler structure applied to an engine, the engine comprising a cylinder body, and the muffler structure comprising:

[0006] a muffler body;

[0007] a cover assembly comprising a front cover and a rear cover, the front cover and the rear cover being detachably connected and forming an installation cavity with a closed periphery and open opposite ends, the two open ends defining the installation cavity being an air inlet and an air outlet respectively, the air inlet and the air outlet being arranged on the rear cover and the front cover respectively, the air inlet and the air outlet being configured as a first heat dissipation path, and the muffler structure body being located in the first heat dissipation path;

[0008] an air guide port arranged on the front cover and configured as a second heat dissipation path with the air outlet;

[0009] Among them, the first heat dissipation path and the second heat dissipation path are both used for heat dissipation of the muffler structure body, and the first heat dissipation path is also used for heat dissipation of the cylinder body.

[0010] Preferably, a plurality of first mounting boss groups are arranged between the rear cover body and the cylinder body, and each of the first mounting boss groups is connected by a first fastening bolt.

[0011] Preferably, a plurality of second mounting boss groups are arranged between the front cover body and the rear cover body, and each of the second mounting boss groups is connected by a second fastening bolt.

[0012] Preferably, an installation gap is formed between the muffler body and the inner wall of the installation cavity, and the installation gap extends along the direction of the first heat dissipation path.

[0013] Preferably, the air guide opening is located at the bottom of the front cover body.

[0014] Preferably, the center line of the air outlet is perpendicular to the center line of the air guide opening.

[0015] Preferably, the front cover body is provided with an air guide boss, and the air guide opening is located between the air guide boss and the air outlet.

[0016] Preferably, the rear cover body is provided with a flow guide plate, and the flow guide plate extends along the direction of the first heat dissipation path.

[0017] The utility model also provides an engine comprising the muffler structure.

[0018] Compared with the prior art, the utility model has the following beneficial effects: by arranging the first heat dissipation path and the second heat dissipation path, the heat dissipation efficiency of the muffler body and the engine cylinder body can be effectively improved. The front cover body and the rear cover body are designed in a detachable connection mode, so that the whole muffler structure is more easy to maintain and overhaul. Effective heat dissipation measures can reduce the aging and damage of the muffler and associated components caused by high temperature, thereby prolonging the service life and improving the reliability and durability of the whole system. On the basis of ensuring the noise reduction function of the traditional muffler, the heat dissipation capacity of the traditional muffler is further strengthened, the problem of poor heat dissipation in the previous products is solved, and a good balance between noise reduction and heat dissipation efficiency is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is an explosion schematic view of the muffler structure in an embodiment of the utility model;

[0020] Fig. 2 It is a structural schematic view of the front cover body in an embodiment of the utility model.

[0021] In the above figure: 1, muffler body; 2, front cover; 3, rear cover; 4, mounting cavity; 5, air inlet; 6, air outlet; 7, air guide; 8, first mounting boss group; 9, second mounting boss group; 10, air guide boss; 11, flow guide plate; 12, cylinder body. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and beneficial effects of the utility model clearer, the technical scheme of the utility model is further explained below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and do not limit the utility model.

[0023] Referring to Figs. 1-2 The utility model provides a kind of muffler structure, applied to engine, the engine includes cylinder body 12;The muffler structure includes:

[0024] Muffler body 1;

[0025] Cover assembly, including front cover 2 and rear cover 3, the front cover 2 and the rear cover 3 are detachably connected, and installation cavity 4 with four periphery closed, opposite two ends open is formed between them, the two open ends of the installation cavity 4 are defined as air inlet 5 and air outlet 6, the air inlet 5 and the air outlet 6 are respectively arranged in the rear cover 3 and the front cover 2, the air inlet 5 and the air outlet 6 are configured as first heat dissipation path, and the muffler structure body is located in the first heat dissipation path;

[0026] Air guide 7, is arranged in the front cover 2, for being configured as second heat dissipation path with the air outlet 6;

[0027] Among them, the first heat dissipation path and the second heat dissipation path are used for heat dissipation to the muffler structure body, and the first heat dissipation path is also used for heat dissipation to the cylinder body 12.

[0028] In this embodiment, the muffler body 1 is responsible for reducing the noise generated by the engine exhaust, the cover assembly includes a front cover 2 and a rear cover 3, the two parts can be disassembled and connected, and a mounting cavity 4 is formed between the two parts, which is closed on all sides and open at both ends. One end of the mounting cavity 4 is the air inlet 5 for connecting the engine cylinder body 12, and the other end is the air outlet 6, which is located on the rear cover 3 and the front cover 2 respectively. The first cooling path is formed between the air inlet 5 and the air outlet 6, and the cold air of the first cooling path is supplied by the exhaust fan arranged on the left side of the cylinder body, which is used to cool the engine cylinder body 12, and then discharged from the air outlet 6 behind the muffler, which can cool and reduce noise at the same time. On the other hand, the air inlet 7 on the front cover 2 together with the air outlet 6 forms the second cooling path, and the cold air of the second cooling path is supplied by the exhaust fan arranged on the right side of the cylinder body. The air inlet 7 of the front cover 2 introduces external airflow, which converges with the airflow of the air outlet 6 of the first cooling path to form a "double airflow superposition effect", forming a negative pressure area at the tail of the muffler body 1 to accelerate the exhaust of hot air. The second cooling path can cool the muffler body 1 and the front cover 2 separately, reduce the temperature of the muffler body 1 and the front cover 2, and reduce the aging, damage and other problems caused by high temperature of the muffler and related components, thereby prolonging the service life of the muffler body 1.

[0029] A plurality of first mounting boss groups 8 are arranged between the rear cover 3 and the cylinder body 12, and each first mounting boss group 8 is connected by a first fastening bolt. Further, a plurality of second mounting boss groups 9 are arranged between the front cover 2 and the rear cover 3, and each second mounting boss group 9 is connected by a second fastening bolt.

[0030] In this embodiment, a plurality of first mounting boss groups 8 are arranged between the rear cover 3 and the engine cylinder body 12, and the rear cover 3 is firmly connected to the engine cylinder body 12 by using first fastening bolts; a plurality of second mounting boss groups 9 are also arranged between the front cover 2 and the rear cover 3, and each second mounting boss group 9 is connected by a second fastening bolt, so that the front cover 2 and the rear cover 3 can be stably combined together while maintaining their detachability, which is convenient for checking, maintaining or replacing the internal components.

[0031] The mounting gap is formed between the muffler body 1 and the inner wall of the mounting cavity 4, and the mounting gap extends along the direction of the first cooling path.

[0032] In this embodiment, a mounting gap is formed between the muffler body 1 and the inner wall of the mounting cavity 4, and this mounting gap extends along the direction of the first heat dissipation path. The heat dissipation path between the air inlet 5 and the air outlet 6 not only includes the airflow passage through the inside of the muffler body 1, but also includes the space between the outside of the muffler body 1 and the inner wall of the mounting cavity 4. By providing a mounting gap between the muffler body 1 and the inner wall of the mounting cavity 4, the space for air flow can be increased, so that heat can be dissipated more effectively, and both the muffler body 1 and the engine block 12 can be better cooled. Since the muffler generates a large amount of heat during operation, if the muffler body 1 directly contacts the inner wall of the mounting cavity 4, thermal stress may be generated due to uneven thermal expansion of the material caused by temperature difference, resulting in structural damage. The provision of a mounting gap helps to alleviate this situation and protect the equipment from thermal damage.

[0033] The air guide opening 7 is located at the bottom of the front cover 2. Further, the center line of the air outlet is perpendicular to the center line of the air guide opening 7.

[0034] In this embodiment, the air guide opening 7 is located at the bottom of the front cover 2. By locating the air guide opening 7 at the bottom, the principle of hot air rising can be utilized to allow cool air to enter from a lower position, forming an effective air flow path and thus improving heat dissipation efficiency. The center line of the air outlet is perpendicular to the center line of the air guide opening 7, which can effectively avoid direct conflict between the inlet and outlet air flows, ensuring smooth flow of the air flow.

[0035] The front cover 2 is provided with an air guide boss 10, and the air guide opening 7 is located between the air guide boss 10 and the air outlet.

[0036] In this embodiment, the design of the air guide boss 10 helps to better control and guide the incoming cooling air, ensuring that it flows along the intended path, thereby improving the overall heat dissipation performance and preventing the incoming cool air from the air guide opening 7 from flowing back into the engine block 12.

[0037] The rear cover 3 is provided with a flow guide plate 11, which extends along the direction of the first heat dissipation path.

[0038] In this embodiment, the rear cover 3 is provided with a flow guide plate 11, which extends along the direction of the first heat dissipation path. The flow guide plate 11 is used to guide the airflow from the air inlet 5 to the air outlet 6, making it flow more smoothly and efficiently through the space around the muffler body 1, thereby improving the overall heat dissipation effect.

[0039] The embodiment also provides an engine comprising the muffler structure, and the specific structure of the engine is referred to the above embodiment.

[0040] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model and not to limit the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the utility model, and all should be covered in the scope of the claims of the utility model.

Claims

1. A muffler structure applied to an engine, the engine including a cylinder block; characterized by, The muffler structure comprises: a muffler body; a cover assembly comprising a front cover and a rear cover, the front cover and the rear cover being detachably connected, and a mounting cavity being formed between the front cover and the rear cover, the mounting cavity being enclosed on the periphery and open at opposite ends, the two open ends defining an air inlet and an air outlet, the air inlet and the air outlet being respectively arranged on the rear cover and the front cover, the air inlet and the air outlet being configured as a first heat dissipation path, and the muffler structure body being located in the first heat dissipation path; an air guide opening arranged on the front cover and configured as a second heat dissipation path with the air outlet; wherein the first heat dissipation path and the second heat dissipation path are both used for heat dissipation of the muffler structure body, and the first heat dissipation path is also used for heat dissipation of the cylinder body.

2. A muffler structure according to claim 1, wherein A plurality of first mounting boss groups are arranged between the rear cover and the cylinder body, and each first mounting boss group is connected by a first fastening bolt.

3. A muffler structure according to claim 1 or 2, wherein A plurality of second mounting boss groups are arranged between the front cover and the rear cover, and each second mounting boss group is connected by a second fastening bolt.

4. The muffler structure of claim 1 wherein, An installation gap is formed between the muffler body and the inner wall of the mounting cavity, and the installation gap extends along the direction of the first heat dissipation path.

5. A muffler structure according to claim 1 or 4, wherein The air guide opening is located at the bottom of the front cover.

6. A muffler structure according to claim 5, wherein The center line of the air outlet is perpendicular to the center line of the air guide opening.

7. The muffler structure of claim 5 wherein, The front cover is provided with an air guide boss, and the air guide opening is located between the air guide boss and the air outlet.

8. The muffler structure of claim 1 wherein, The rear cover is provided with a flow guide plate, and the flow guide plate extends along the direction of the first heat dissipation path.

9. An engine characterized by, The muffler structure comprises: the muffler structure according to any one of claims 1-8.

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