Diesel engine
By designing the windshield device and flow guide in the diesel engine to form a heat dissipation channel, the problem of heat accumulation of the silencer is solved, and effective heat dissipation and noise reduction of the silencer is achieved.
Patent Information
- Application Number
- CN202422341520.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-25
AI Technical Summary
When the diesel engine is running, the heat generated by the silencer cannot effectively dissipate heat, causing the engine to overheat and shut down.
A diesel engine is designed. By installing a wind shield on the frame to form a heat dissipation channel, the air from the engine air outlet enters the cavity and is discharged through the silencer channel of the silencer, thereby achieving centralized and uniform heat dissipation of the silencer, and optimizing the air flow path with the flow guide and the heat dissipation hole.
Effectively control the silencer temperature within a reasonable range, keep the silencer working normally, reduce diesel engine noise and improve heat dissipation efficiency.
Smart Images
Figure CN223177631U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of power equipment, and in particular to a diesel engine. Background Art
[0002] With the advancement of power equipment technology, diesel engines have become a commonplace in our daily lives. During operation, the muffler of a diesel engine generates a significant amount of heat. This excessive heat transfer to the engine can cause overheating and shutdown. Therefore, effectively dissipating heat from the muffler is a pressing technical challenge. Utility Model Content
[0003] Based on this, the present application provides a diesel engine to effectively dissipate heat from the muffler.
[0004] An embodiment of the present application provides a diesel engine, comprising a frame, an engine mounted on the frame, and a windshield mounted on the frame. The windshield comprises a cavity and a first opening and a second opening, both of which are connected to the cavity. The cavity and the air outlet of the engine are connected via the first opening, and the second opening is located in the air outlet path of the engine. A muffler is at least partially located within the cavity, the muffler having a muffler channel, and the muffler channel having a muffler inlet and a muffler outlet that are connected to each other, with the muffler inlet being closer to the air outlet than the muffler outlet.
[0005] In one embodiment, the wind shielding device includes a first portion provided on the frame, and a second portion connected to the first portion;
[0006] The first portion and the second portion together define a cavity.
[0007] In one embodiment, the first portion further includes a first bent portion, and the inner surface of the first bent portion facing the cavity can abut against the outer surface of the muffler; and / or
[0008] The first part further includes a second bent portion, and the first part and the frame are installed by means of the second bent portion.
[0009] In one embodiment, the first part is a frame, the second part is a shell, and the shell is covered on the frame;
[0010] The second opening is formed on the shell, and the silencer outlet of the silencer is exposed outside the cavity by means of the second opening.
[0011] In one embodiment, a plurality of heat dissipation holes are formed on the housing.
[0012] In one embodiment, the windshield device further includes a flow guide member, which is disposed outside the cavity and surrounds at least a portion of the edge of the first opening, and defines a flow guide space.
[0013] In one embodiment, the opening direction of the first opening is defined as the first direction, and the opening direction of the air outlet of the engine is defined as the first direction;
[0014] The diesel engine also includes a mounting part, which is located outside the cavity and installed on the frame. The mounting part has a mounting hole in a direction parallel to the first direction, and the inner side surface of the mounting hole is in contact with the outer surface of part of the engine; part of the engine is located on the side of the mounting hole facing the air outlet of the engine, and the other part of the engine is located on the side of the mounting hole facing away from the air outlet.
[0015] In one embodiment, the mounting member is further provided with a reinforcement portion, which is arranged around the mounting hole.
[0016] In one embodiment, the frame is provided with an air inlet, which is located on the air inlet path of the engine, and connects the air inlet of the engine with the outside of the diesel engine.
[0017] In one embodiment, the air inlet includes a plurality of air inlet holes, and all the air inlet holes are on the rack.
[0018] The above-mentioned diesel engine includes a frame, an engine mounted on the frame, a windshield and a muffler. In this way, a heat dissipation channel is formed by the setting of the windshield, and the wind blown out by the engine can be concentrated in the cavity to dissipate the heat of the muffler in the cavity. The wind flows from the air outlet of the engine to the first opening and then enters the cavity. The wind in the cavity can flow from the second opening to the outside of the cavity, forming a reliable heat dissipation channel. The muffler has a muffler channel, and the wind flowing out of the air outlet of the engine can enter the muffler from the muffler inlet of the muffler channel. The wind is then discharged to the outside of the muffler from the muffler outlet, further dissipating the heat of the muffler and the muffler can silence the wind flowing out of the engine. In this way, the muffler in the cavity can be dissipated in a concentrated and uniform manner, so that the temperature of the muffler is moderate and maintained within a reasonable range. The muffler can also be used to muffle the diesel engine and reduce the noise of the diesel engine. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a diesel engine in some embodiments of the present application.
[0020] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the diesel engine housing after installation.
[0021] Figure 3 for Figure 1 A schematic structural diagram of the diesel engine from another angle.
[0022] Figure 4 for Figure 1Schematic diagram of the decomposition structure of a medium diesel engine.
[0023] Figure 5 For Figure 1 Schematic three-dimensional structure diagram of an engine and a muffler in the medium.
[0024] The reference numerals in the specific embodiments are as follows:
[0025] Diesel engine 100, frame 110, engine 120, air inlet G1, air outlet G2, windshield device 130, cavity A, first opening K1, second opening K2, first part B1, first bending part W1, second bending part W2, second part B2, muffler 140, muffler inlet R1, muffler outlet C1, frame body J, first frame body J1, second frame body J2, housing E, heat dissipation holes S, flow guiding member D, mounting member 150, mounting holes Z, strengthening part Q, air inlet R2, air guiding holes Y;
[0026] First direction F1. Specific embodiments
[0027] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the specific embodiments of the present application in detail with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.
[0028] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.
[0029] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.
[0030] In this application, unless otherwise clearly stipulated and defined, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0031] In this application, unless otherwise clearly stipulated and defined, if there is a description such as a first feature being "on" or "under" a second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower horizontal level than the second feature.
[0032] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.
[0033] Refer to Figures 1 to 3 , Figure 1 , which is a schematic perspective view of the three-dimensional structure of the diesel engine 100 in some embodiments of this application. Figure 2 is Figure 1 a schematic perspective view of the installed housing E of the diesel engine 100 in Figure 3 is Figure 1 a schematic view of the structure of the diesel engine 100 from another angle in . The diesel engine 100 provided by an embodiment of this application includes a frame 110, an engine 120 installed on the frame 110, a windshield device 130 installed on the frame 110, and a silencer 140. The windshield device 130 has a cavity A, and a first opening K1 and a second opening K2 that are both in communication with the cavity A. The cavity A and the air outlet G2 of the engine 120 are in communication through the first opening K1, and the second opening K2 is located on the air outlet path of the engine 120.
[0034] The engine 120 has an air outlet G2 through which the engine 120 discharges the gases generated during the combustion process of the engine 120, thereby maintaining the normal operation of the engine 120. The first opening K1 connects the outlet of the engine 120 to the cavity A, enabling the gases discharged from within the engine 120 to enter the cavity A through the first opening K1. When the air enters the cavity A, the air fills the interior of the cavity A, resulting in an increase in internal pressure. Since fluids always flow from high-pressure regions to low-pressure regions, once the pressure inside the cavity A is equal to or higher than the pressure at the first opening K1, the air will no longer flow out through the first opening K1 but will instead seek other outlets with lower pressure. By setting the second opening K2 on the air outlet path of the engine 120, the air inside the cavity A will flow out of the cavity A through the second opening K2.
[0035] In this way, the flow path of the air is as follows: First, it enters the cavity A from the air outlet G2 of the engine 120 through the first opening K1, and then flows out of the cavity A through the second opening K2 from within the cavity A. In this way, a heat dissipation channel is formed to achieve centralized and uniform heat dissipation for the muffler 140 located within the cavity A, keeping the temperature of the muffler 140 moderate and within a reasonable range.
[0036] It can be understood that the above-mentioned flow path is the main flow path, and the air can also flow through other flow paths. For example, the air can enter the cavity A from the first opening K1 and can also flow out of the cavity A from the first opening K1.
[0037] The muffler 140 is at least partially located within the cavity A, and the muffler 140 has a muffling channel. The air flowing out of the air outlet G2 of the engine 120 can enter the muffler 140 through the muffling inlet R1 of the muffling channel, and the air then discharges to the outside of the muffler 140 from the muffling outlet C1, further dissipating heat from the muffler 140 and the muffler 140 can muffler the air flowing out of the engine 120. In this way, the muffling of the diesel engine 100 can be achieved, thereby reducing the noise of the diesel engine 100.
[0038] In some embodiments of the present application, with continued reference to Figures 1 to 3 , the windshield device 130 includes a first part B1 provided on the frame 110 and a second part B2 connected to the first part B1. The first part B1 and the second part B2 jointly define the cavity A.
[0039] "Cavity A" herein refers to a relatively enclosed structure with a certain space. The relative enclosure is due to Cavity A having a first opening K1 and a second opening K2 that can connect the inside and outside of Cavity A. Cavity A can be of any shape and size and is a structure capable of accommodating components or fluids. Specifically, in the present application, Cavity A is a structure that can accommodate both wind and muffler 140, such that muffler 140 can come into contact with the flowing wind inside Cavity A, enabling muffler 140 to dissipate heat.
[0040] Among them, the first part B1 is connected to the frame 110, and the second part B2 is connected to the first part B1. Thus, both the first part B1 and the second part B2 of the windshield device 130 are mounted on the frame 110.
[0041] In some embodiments of the present application, refer to Figure 4 . Figure 4 For Figure 1 is a schematic diagram of the disassembled structure of the diesel engine 100 in
[0042] And the second opening K2 is opened on the housing E, and the sound attenuation outlet C1 of the muffler 140 is exposed outside the cavity A through the second opening K2. Thus, it can be ensured that the wind that has passed through the muffler 140 and been sound-attenuated through the sound attenuation inlet R1 into the muffler 140 can be discharged outside the cavity A as much as possible, enabling the wind in the heat dissipation channel to flow continuously, and further enhancing the heat dissipation effect on the muffler 140.
[0043] Continue to refer to Figure 4 , the frame J is composed of a first frame J1 and a second frame J2. This is because during the processing of the frame J, first, a plate-shaped material is taken and bent to form the required shape, and then the bent material is cut to finally obtain the required first frame J1 or second frame J2. Finally, the obtained first frame J1 and second frame J2 are connected to form the frame J. This processing process is simple and convenient to operate, and can be processed and connected into frames J of different shapes.
[0044] In some other embodiments, the first part B1 and the second part B2 may both be shells E, which can make processing and production more convenient, but the matching of the two shells E may lead to complex assembly and sealing problems.
[0045] In some embodiments of the present application, continue to refer to Figures 1 to 4 . A plurality of heat dissipation holes S are provided on the shell E, wherein the plurality of heat dissipation holes S can be arranged at regular intervals on the shell E, so that the heat energy can be more evenly conducted to the outside of the cavity A, thereby avoiding overheating in the cavity A. The size and shape of the heat dissipation holes S are not limited here. If the aperture of the heat dissipation holes S is set too large, impurities or other tiny particles may enter the engine 120. If the aperture of the heat dissipation holes S is too small, the wind circulation channel is too small, which is not conducive to the flow of wind. In this way, the heat in the cavity A can be evenly dissipated to the outside of the cavity A through the heat dissipation holes S. Among them, the heat dissipation holes S can be spread all over the shell E according to the size of the shell E, thereby further improving the heat dissipation effect.
[0046] In some embodiments of the present application, continue to refer to Figure 4 The frame J further includes a first bending portion W1, the inner surface of which can abut against the outer surface of the muffler 140; and / or, the frame J further includes a second bending portion W2, and the frame J and the frame 110 are installed with the aid of the second bending portion W2.
[0047] A "bend" refers to a portion of an object or structure that bends or folds. Specifically, in this application, it refers to a bent or folded portion of a frame J. The angle and direction of the bend are not limited; different bends can bend in different directions and at different angles.
[0048] The inner surface of the first bent portion W1 facing the cavity A can abut against the outer surface of the muffler 140. During the operation of the muffler 140, the muffler 140 may shake. By providing the first bent portion W1, the muffler 140 can be restricted to the cavity A when shaking and contacting the inner surface of the first bent portion W1, so that the muffler 140 will move from the first bent portion W1 toward the side of the cavity A, and will not move toward the side of the first bent portion W1 away from the cavity A. In order to facilitate the installation of the frame J on the rack 110, the frame J also includes a second bent portion W2. The bending angle, direction, and shape of the second bent portion W2 can be adjusted according to the relative position of the frame J and the rack 110 and the installation space requirements, so that the frame J can adapt to different installation environments.
[0049] In some embodiments of this application, reference may be made to Figure 4, the bending angle at the bent portion is 90 degrees. A right-angle bend can usually provide better structural strength and stability, and a 90-degree bend is relatively easy to achieve during the manufacturing process, making the manufacturing and processing of the bent portion more convenient. The right-angle bend can also provide clear alignment and positioning references for the frame J and the frame 110, making it easier to meet the precise assembly requirements during the installation process.
[0050] In some embodiments of the present application, with reference to Figure 1 , the wind deflector 130 further includes a flow guide member D. The flow guide member D is disposed outside the cavity A and is disposed around at least part of the edge of the first opening K1. The flow guide member D defines a flow guide space.
[0051] The "flow guide member D" refers to a component used to guide, control, or optimize fluid flow. Specifically, in the present application, the flow guide member D refers to a component used to guide the wind from the air outlet G2 of the engine 120 to the first opening K1 so that as much wind as possible flows into the cavity A. "At least part" refers to a part or all of the whole. Here, it means that at least part of the edge of the first opening K1 can be surrounded by the flow guide member D, or all of it can be surrounded by the flow guide member D. The "edge of the opening" refers to the outer contour of the opening, and "surround" means to surround or wrap one object or structure around another object or structure. Specifically, in the present application, it means that the flow guide member D surrounds the outer contour of the first opening K1.
[0052] In this way, the flow guide member D is surrounded near the first opening K1. When the wind enters the cavity A through the first opening K1, the wind will follow the path of least resistance. If the flow guide member D is surrounded near the first opening K1, when the wind enters the flow guide space, a pressure gradient will be generated around the flow guide space, and the pressure will gradually decrease from the side of the flow guide member D close to the air outlet G2 of the engine 120 to the side of the flow guide member D close to the cavity A. In this way, the pressure in the inner region of the flow guide space will be lower than the pressure in the outer region of the flow guide space, and the wind will tend to flow from the high-pressure area to the low-pressure area, thereby improving the gas flow path.
[0053] In some embodiments of the present application, with reference to Figures 1 to 3 , and in combination with reference to Figure 5 , Figure 5 is Figure 1 a three-dimensional structural schematic diagram of the engine 120 and the muffler 140 in . Define the opening direction of the first opening K1 as the first direction, and the opening direction of the air outlet G2 of the engine 120 is also the first direction.
[0054] The diesel engine 100 also includes a mounting member 150, which is located outside the cavity A and mounted on the frame 110. The mounting member 150 has a mounting hole Z defined in a direction parallel to the first direction. The inner side of the mounting hole Z mates with the outer surface of a portion of the engine 120. Furthermore, a portion of the engine 120 is located on the side of the mounting hole Z that faces the air outlet G2 of the engine 120, while another portion of the engine 120 is located on the side of the mounting hole Z that faces away from the air outlet G2.
[0055] “Fitting” refers to the close contact between the surfaces of two objects. In this application, it specifically refers to the close contact between the inner side surface of the mounting hole Z and the outer surface of the engine 120, with almost no gap between the two.
[0056] Such a design not only improves the stability and durability of the mounting member 150 and reduces the vibration of the engine 120, but also, because the inner surface of the mounting hole Z and the outer surface of the engine 120 fit closely together, it reduces the risk of wind from the area on the side of the mounting hole Z facing the air outlet G2 of the engine 120 flowing through the mounting hole Z to the area on the side of the mounting hole Z away from the air outlet G2.
[0057] Furthermore, by aligning the opening direction of the air outlet G2 of the engine 120 with the opening direction of the first opening K1 and connecting the air outlet G2 of the engine 120 with the first opening K1, more air from the air outlet G2 of the engine 120 can enter the first opening K1. Since the air outlet G2 of the engine 120 is in the first direction, the mounting hole Z is provided in a direction parallel to the first direction to facilitate installation of the engine 120.
[0058] In some embodiments of the present application, reference is made to Figure 4 , the mounting member 150 is further provided with a reinforcement portion Q. The reinforcement portion Q is arranged around the mounting hole Z.
[0059] “Surrounding” specifically refers to surrounding the center of the mounting hole Z and being arranged close to the edge of the mounting hole Z.
[0060] In this way, the risk of deformation or damage of the material near the mounting hole Z is reduced, thereby improving the load-bearing capacity and durability of the mounting member 150. The reinforcement portion Q can be a reinforcement rib.
[0061] In some embodiments of the present application, reference is made to Figure 3 as well as Figure 5 The frame 110 is provided with an air inlet R2 , and the air inlet R2 is located on the air inlet path of the engine 120 . The air inlet R2 can connect the air inlet G1 of the engine 120 with the outside of the diesel engine 100 .
[0062] Inside the engine 120, oxygen in the air needs to be mixed with fuel in the engine 120 for combustion. The air inlet G1 of the engine 120 introduces external air into the engine 120 to provide oxygen for the combustion process. An air inlet R2 corresponding to the air inlet G1 of the engine is provided on the frame 110. The air inlet R2 is on the air inlet path of the engine 120. In this way, the air flow can be guided to the air inlet G1 of the engine 120, so that more air can flow to the air inlet G1 of the engine 120.
[0063] In some embodiments of the present application, continue to refer to Figure 1 With Figure 2 , the air inlet R2 includes a plurality of air guiding holes Y, and all the air guiding holes Y are on the frame 110. Among them, the plurality of air guiding holes Y can be arranged at regular intervals on the frame 110. The size and shape of the air guiding holes Y are not limited. If the aperture of the air guiding hole Y is set too large, impurities or other fine particles may enter the engine 120. If the aperture of the air guiding hole Y is too small, the air flow channel will be too small, which is not conducive to the air flow.
[0064] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.
[0065] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.
Claims
1. A diesel engine, characterized in that, include: frame; an engine, mounted on the frame; A windshield device, mounted on the frame; The windshield device has a cavity, and a first opening and a second opening both communicating with the cavity, the cavity communicating with the air outlet of the engine via the first opening, and the second opening being located on the air outlet path of the engine; and A muffler is at least partially located in the cavity; the muffler has a muffler channel, the muffler channel has a muffler inlet and a muffler outlet that are connected to each other, and the muffler inlet is closer to the air outlet than the muffler outlet.
2. The diesel engine according to claim 1, characterized in that, The windshield device includes a first part provided on the frame, and a second part connected to the first part; The first portion and the second portion together define the cavity.
3. The diesel engine according to claim 2, characterized in that, The first portion further includes a first bent portion, the inner surface of the first bent portion facing the cavity being in contact with the outer surface of the muffler; and / or The first part further includes a second bent portion, and the first part and the frame are installed by means of the second bent portion.
4. The diesel engine according to claim 2, characterized in that, The first part is a frame, the second part is a shell, and the shell cover is arranged on the frame; The second opening is formed on the shell, and the silencer outlet of the silencer is exposed outside the cavity via the second opening.
5. The diesel engine according to claim 4, characterized in that, The shell is provided with a plurality of heat dissipation holes.
6. The diesel engine according to any one of claims 1 to 5, characterized in that, The windshield device further includes a flow guide member, which is disposed outside the cavity and surrounds at least a portion of an edge of the first opening. The flow guide member defines a flow guide space.
7. The diesel engine according to any one of claims 1 to 5, characterized in that, The opening direction of the first opening is defined as a first direction, and the opening direction of the air outlet of the engine is defined as the first direction; The diesel engine also includes a mounting part, which is located outside the cavity and installed on the frame. The mounting part is provided with a mounting hole in a direction parallel to the first direction, and the inner side surface of the mounting hole is in contact with the outer surface of part of the engine; a part of the engine is located on the side of the mounting hole facing the air outlet of the engine, and the other part of the engine is located on the side of the mounting hole facing away from the air outlet.
8. The diesel engine according to claim 7, characterized in that, The mounting piece is further provided with a reinforcement portion, which is arranged around the mounting hole.
9. The diesel engine according to any one of claims 1 to 5, characterized in that, The frame is provided with an air inlet, which is located on the air inlet path of the engine. The air inlet connects the air inlet of the engine with the outside of the diesel engine.
10. The diesel engine according to claim 9, characterized in that, The air inlet includes a plurality of air inlet holes, and all of the air inlet holes are on the frame.