Engine and generator set

Abstract

The application provides an engine, which comprises a cylinder body and a cylinder head, the cylinder body is provided with a wind guide through hole and an exhaust cavity, the wind guide through hole extends towards a crankcase of the cylinder body, the exhaust cavity is arranged below the wind guide through hole, the exhaust cavity is communicated with the wind guide through hole, and the exhaust cavity is arranged in an open mode. The cylinder head is penetrated by an air inlet hole communicated with the wind guide through hole. The engine is provided with the wind guide through hole and the exhaust cavity in the cylinder body, and the air inlet hole communicated with the wind guide through hole is arranged on the cylinder head, so that part of cooling air flowing to the cylinder head can be introduced into the wind guide through hole, and the cooling air will be finally exhausted from the exhaust cavity, in the process, the cooling air can take away part of heat of the cylinder barrel of the cylinder body, so that the cooling effect of the cylinder body is improved, and the heat dissipation capacity of the cylinder body is enhanced. The application further provides a generator set, by using the above engine, the power performance and the economy of the whole machine are improved.

Description

Technical Field

[0001] This invention relates to the field of engine technology, specifically to an engine and generator set. Background Technology

[0002] A generator set is a mechanical device that converts mechanical energy into electrical energy. Generator sets have a wide range of uses in industrial and agricultural production as well as daily life. One of the most important components of a generator set is the engine, which contains a combustion chamber, intake passage, exhaust passage, and other main structures. The mixed combustion gases enter the combustion chamber through the intake passage, are burned to produce power, and are then discharged through the exhaust passage, thus enabling the engine to continuously output power.

[0003] Existing engine cylinder blocks rely solely on external cooling fins for heat dissipation. The tappet chamber and cylinder are typically integrated, with no additional cooling channels between them. This complex overall structure hinders heat dissipation, resulting in inadequate cooling performance. Furthermore, the airflow cooling the cylinder head is directly directed towards the muffler, further reducing the effective utilization of this cooling airflow. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the purpose of this invention is to provide an engine and generator set to improve the cooling effect of the cylinder block and enhance the heat dissipation capacity of the cylinder block.

[0005] To achieve the above objectives, one objective of the present invention is to provide an engine, including a cylinder block having an air guide hole and an exhaust chamber, the air guide hole extending toward the crankcase of the cylinder block, the exhaust chamber being disposed below the air guide hole and communicating with the air guide hole, the exhaust chamber being open; and a cylinder head disposed at the top of the cylinder block, the cylinder head having an air inlet hole communicating with the air guide hole.

[0006] Preferably, the cylinder body has a windward side and a leeward side on both sides, and the exhaust chamber extends through the cylinder body along the direction from the windward side to the leeward side.

[0007] Preferably, the bottom of the exhaust cavity near the windward side is provided with a windbreak, which extends toward the cylinder head.

[0008] Preferably, an intake side and an exhaust side are formed on both sides of the cylinder head, and an air guide cavity is formed in the side wall recess between the intake side and the exhaust side of the cylinder head. The air guide cavity extends through the cylinder head in the direction from the intake side to the exhaust side, and the air inlet is opened in the air guide cavity.

[0009] Preferably, the cylinder head includes a cylinder head body and a cylinder cover. The cylinder head body is connected to the cylinder body. The top of the cylinder head body is recessed to form a receiving groove, and the cylinder cover is placed outside the receiving groove. Two clearance holes pass through the receiving groove and communicate with the air guide cavity. Two first mounting holes pass through the bottom of the air guide cavity. The cylinder body is provided with a plurality of second mounting holes, and the clearance holes, the first mounting holes, and the second mounting holes are correspondingly arranged.

[0010] Preferably, the receiving groove is provided with a rocker arm support, and the rocker arm support seals and blocks the two clearance holes.

[0011] Preferably, the receiving groove has two first connecting holes that communicate with the air guide cavity; the bottom of the air guide cavity has two second connecting holes that correspond to one of the first connecting holes; it also includes two connecting pipes, both of which are located in the air guide cavity, and the two ends of the connecting pipes are respectively connected to the corresponding first connecting hole and the second connecting hole.

[0012] Preferably, the air guide cavity is provided with two support columns, and the two ends of the support columns are respectively connected to the top and bottom of the air guide cavity.

[0013] Preferably, the air guide cavity is provided with air guide blades, and a flow guide groove is formed between the air guide blades and the bottom of the air guide cavity. The flow guide groove is connected to the air inlet hole, and the end of the flow guide groove near the exhaust side is a closed structure.

[0014] A second objective of this invention is to provide a generator set, including the aforementioned engine.

[0015] The beneficial effects of this invention are:

[0016] This invention discloses an engine that has an air guide hole and an exhaust chamber in the cylinder body, and an air intake hole in the cylinder head that communicates with the air guide hole. The air intake hole can introduce part of the cooling airflow flowing to the cylinder head into the air guide hole. This cooling airflow will eventually be discharged from the exhaust chamber. In this process, the cooling airflow will carry away part of the heat of the cylinder body and cylinder barrel, thereby improving the cooling effect of the cylinder body and enhancing the heat dissipation capacity of the cylinder body.

[0017] The present invention also discloses a generator set, which improves the working environment of the engine by using the above-mentioned engine, increases the output power of the engine in high-temperature environments, and thus improves the power and economy of the whole machine. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a schematic diagram of the structure of an engine provided in an embodiment of the present invention;

[0020] Figure 2 for Figure 1 Schematic diagram of AA section in the middle;

[0021] Figure 3 This is a schematic diagram of the cylinder block structure;

[0022] Figure 4 This is a partial schematic diagram of the exhaust chamber;

[0023] Figure 5 This is a schematic diagram of the cylinder head structure;

[0024] Figure 6 This is a side view of the cylinder head body on the air intake side;

[0025] Figure 7 This is a schematic diagram of the structure inside the receiving tank;

[0026] Figure 8 This is a schematic diagram of the structure inside the air guide cavity;

[0027] Figure 9 A schematic diagram of the structure for sealing the two clearance holes of the rocker arm support;

[0028] Figure 10 This is a schematic diagram of the structure in which the bolt is installed in the first mounting hole;

[0029] Figure 11 This is a schematic diagram of the flow guide channel.

[0030] Figure label:

[0031] 100-Cylinder block, 101-Air guide hole, 102-Exhaust chamber, 103-Wind baffle, 104-Second mounting hole, 105-Pushrod chamber;

[0032] 200-Cylinder head, 201-Air inlet, 202-Air guide cavity, 203-Receiving groove, 204-Leaving hole, 205-First mounting hole, 206-First connecting hole, 207-Second connecting hole, 208-Support column, 209-Air guide blade, 210-Flow guide groove, 211-Third mounting hole, 212-Installation space;

[0033] 301 - Windward side, 302 - Leeward side, 303 - Intake side, 304 - Exhaust side;

[0034] 400-rocker arm support;

[0035] 500-Connecting pipe;

[0036] 600-bolt;

[0037] 700-puller,

[0038] 800 - Spark plug. Detailed Implementation

[0039] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0040] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0041] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to 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 the present invention.

[0042] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0043] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] Example 1

[0046] like Figure 1-11 As shown, in one embodiment of the present invention, an engine is provided, including a cylinder block 100 and a cylinder head 200. The cylinder block 100 has an air guide hole 101 and an exhaust chamber 102. The air guide hole 101 extends towards the crankcase of the cylinder block 100. The exhaust chamber 102 is located below the air guide hole 101 and communicates with the air guide hole 101, and the exhaust chamber 102 is open. The cylinder head 200 is located at the top of the cylinder block 100, and an air inlet 201 communicating with the air guide hole 101 extends through the cylinder head 200.

[0047] The engine is installed inside the generator set's housing, which also houses the generator and muffler (neither shown in the attached diagram). The generator, engine, and muffler are arranged sequentially. When the engine drives the generator, the generator's impeller rotates at high speed, creating a negative pressure inside the housing. Outside air is drawn into the housing, forming a cooling airflow. This cooling airflow first cools the generator, and then blows onto the cylinder block 100 and cylinder head 200, thereby cooling the cylinder block 100 and cylinder head 200.

[0048] Due to the presence of the air intake 201, some of the cooling airflow flowing through the cylinder head 200 will flow through the air intake 201 into the air guide hole 101, and then flow towards the engine crankcase into the exhaust chamber 102, and finally be discharged from the exhaust chamber 102. During the flow of this cooling airflow through the air guide hole 101 and the exhaust chamber 102, it will carry away some of the heat from the cylinder barrel of the cylinder block 100, thus improving the cooling effect on the cylinder barrel of the cylinder block 100.

[0049] The airflow that has cooled the cylinder head 200 and cylinder block 100, as well as the airflow that has been discharged from the exhaust chamber 102, will then blow onto the muffler, thus achieving cooling of the generator, engine and muffler.

[0050] This embodiment discloses an engine that has an air guide hole 101 and an exhaust chamber 102 in the cylinder block 100, and an air inlet 201 communicating with the air guide hole 101 on the cylinder head 200. The air inlet 201 can introduce part of the cooling airflow flowing to the cylinder head 200 into the air guide hole 101. This cooling airflow will eventually be discharged from the exhaust chamber 102. In this process, the cooling airflow will carry away part of the heat of the cylinder barrel of the cylinder block 100, thereby improving the cooling effect of the cylinder block 100, enhancing the heat dissipation capacity of the cylinder block 100, improving the output power of the engine in high temperature environment, and thus improving the power and economy of the whole engine operation.

[0051] In one embodiment, the cylinder block 100 has a windward side 301 and a leeward side 302 formed on both sides, and the exhaust chamber 102 extends through the cylinder block 100 along the direction from the windward side 301 to the leeward side 302. The windward side 301 refers to the side of the cylinder block 100 facing the generator, while the leeward side 302 refers to the side of the cylinder block 100 facing the muffler. When the cooling airflow blows towards the windward side 301 of the cylinder block 100, a portion of the airflow will directly blow towards the exhaust chamber 102. During the flow, the airflow will carry away some of the heat from the cylinder barrel of the cylinder block 100 and blow it directly towards the muffler through the exhaust chamber 102. In this way, cooling of the cylinder block 100 and the muffler is achieved.

[0052] In one embodiment, the bottom of the exhaust cavity 102 near the windward side 301 is provided with a baffle 103, which extends towards the cylinder head 200. Since the top of the baffle 103 is higher than the bottom of the exhaust cavity 102, the air pressure on the bottom side of the exhaust cavity 102 (near the leeward side 302) is lower than the air pressure on the side of the baffle 103. Therefore, the airflow blowing out from the air guide hole 101 will directly blow towards the opening of the exhaust cavity 102 near the leeward side 302, and finally exit the exhaust cavity 102 and blow towards the muffler, thus cooling the muffler. Therefore, the design of the baffle 103 facilitates the guidance of the airflow blowing out from the air guide hole 101, thereby reducing the loss of this airflow as it flows into the exhaust cavity 102 and improving the heat dissipation effect on the cylinder.

[0053] In one embodiment, an intake side 303 and an exhaust side 304 are formed on both sides of the cylinder head 200, respectively. A guide cavity 202 is formed in the side wall recess between the intake side 303 and the exhaust side 304 of the cylinder head 200. The guide cavity 202 extends through the cylinder head 200 along the direction from the intake side 303 toward the exhaust side 304, and an air inlet 201 is formed in the guide cavity 202. The intake side 303 is arranged on the same side as the windward side 301, and the exhaust side 304 is arranged on the same side as the leeward side 302. After the cooling airflow enters the guide cavity 202, it will cool the cylinder head 200. Part of the airflow will carry away the heat of the cylinder head 200 and blow it toward the muffler, thereby cooling the muffler.

[0054] Since the air guide cavity 202 extends through the cylinder head 200 along the direction from the intake side 303 to the exhaust side 304, the design of the air guide cavity 202 reduces the obstruction of the cooling airflow by the cylinder head 200, increases the cooling space inside the cylinder head 200, improves the passage of the cooling airflow through the cylinder head 200, and increases the area for heat exchange between the cylinder head 200 and the cooling airflow. As a result, the cooling and heat dissipation effect of the cylinder head 200 is improved.

[0055] Due to the presence of the air inlet 201, some of the cooling airflow flowing through the air guide cavity 202 will flow through the air inlet 201 into the air guide hole 101, and then flow towards the crankcase into the exhaust cavity 102, finally being discharged from the exhaust cavity 102. During the flow of this cooling airflow through the air guide hole 101 and the exhaust cavity 102, it will carry away some of the heat from the cylinder barrel of the cylinder block 100, thus achieving cooling and heat dissipation of the cylinder barrel.

[0056] In one embodiment, see Figure 5 The cylinder head 200 includes a cylinder head body and a cylinder cover. The cylinder head body is mounted on the cylinder body 100. The top of the cylinder head body has a recessed receiving groove 203, and the cylinder cover is placed over the receiving groove 203. Two clearance holes 204 pass through the receiving groove 203, communicating with the air guide cavity 202. Two first mounting holes 205 pass through the bottom of the air guide cavity 202. The cylinder body 100 has five second mounting holes 104, and the clearance holes 204, first mounting holes 205, and second mounting holes 104 are correspondingly arranged. A rocker arm support 400 is provided in the receiving groove 203, and the rocker arm support 400 seals and blocks the two clearance holes 204.

[0057] A third mounting hole 211 runs through the bottom of the air guide cavity 202. The cylinder head 200 has a mounting space 212 for mounting the spark plug 800 on the side opposite to the air guide cavity 202. Two fourth mounting holes run through the mounting space 212. When assembling the cylinder head body with the cylinder body 100, these five second mounting holes 104 are respectively aligned with two first mounting holes 205, two fourth mounting holes and one third mounting hole 211. The first mounting holes 205, fourth mounting holes and third mounting holes 211 are all fastened to the second mounting holes 104 by bolts 600.

[0058] Since the height of the air guide cavity 202 is insufficient to screw the bolt 600 into the two first mounting holes 205, two clearance holes 204 are designed in the receiving groove 203. The bolt 600 can be screwed into the first mounting hole 205 and the second mounting hole 104 through the clearance holes 204. After the bolt 600 is tightened, the head of the bolt 600 is located in the air guide cavity 202.

[0059] For the two clearance holes 204, after the two bolts 600 are installed, the rocker arm support 400 is then installed in the receiving groove 203 to seal the two clearance holes 204. After the other components in the receiving groove 203 are assembled, the cylinder head cover is then installed on the outside of the receiving groove 203. Simultaneously, by using the rocker arm support 400 to seal the two clearance holes 204, there is no need to design additional sealing components to seal the two clearance holes 204, thus optimizing the overall structure of the cylinder head 200. Of course, to ensure the sealing effect of the rocker arm support 400 on the two clearance holes 204, a sealing gasket is provided at the bottom of the rocker arm support 400.

[0060] Conventional cylinder head structures, due to the need to accommodate the installation of bolts 600, cannot provide extra cooling space on the side of the cylinder head body away from the mounting space 212. However, the cylinder head 200 design in this embodiment abandons the conventional cylinder head structural design concept. The cooperation between the air guide cavity 202, the clearance hole 204, and the first mounting hole 205 not only satisfies the installation of bolts 600, but also reduces the obstruction of cooling airflow by the cylinder head 200, increases the internal cooling space of the cylinder head 200, and thus improves the cooling and heat dissipation effect of the cylinder head 200.

[0061] In one embodiment, the receiving groove 203 has two first connecting holes 206 extending through it, and the first connecting holes 206 communicate with the air guiding cavity 202. The bottom of the air guiding cavity 202 has two second connecting holes 207 extending through it, and each second connecting hole 207 corresponds to one first connecting hole 206. It also includes two connecting pipes 500, both of which are disposed within the air guiding cavity 202, and their two ends are respectively connected to the corresponding first connecting hole 206 and second connecting hole 207.

[0062] Two connecting pipes 500 are press-fitted into the air guide cavity 202 after the cylinder head body is formed. The connecting pipes 500 are designed to connect the first connecting hole 206 and the second connecting hole 207 respectively. The structure formed by the first connecting hole 206, the connecting pipes 500 and the second connecting hole 207 can be used to accommodate the tappets 700. After the cylinder body 100, the cylinder head body and the cylinder head are assembled, this structure can cooperate with the tappet cavity 105 of the cylinder body 100 to isolate the two tappets 700 from the outside world.

[0063] In one embodiment, in order to improve the overall structural strength of the air guide cavity 202 and the cylinder head 200, two support columns 208 are provided in the air guide cavity 202. The two ends of the support columns 208 are respectively connected to the top and bottom of the air guide cavity 202. The support columns 208 and the cylinder head 200 are integrally formed.

[0064] In one embodiment, it is convenient to guide the cooling airflow in the air guide cavity 202 to the air inlet 201. The air guide cavity 202 is provided with air guide blades 209. A guide groove 210 is formed between the air guide blades 209 and the bottom of the air guide cavity 202. The guide groove 210 is connected to the air inlet 201. The end of the guide groove 210 near the exhaust side 304 has a closed structure.

[0065] Example 2

[0066] In one embodiment of the present invention, a generator set is provided, including the engine in the first embodiment above. By using the engine, the cooling effect of the cylinder block 100 is improved, the heat dissipation capacity of the cylinder block 100 is enhanced, the working environment of the engine is improved, and the output power of the engine in a high-temperature environment is increased, thereby improving the power and economy of the whole machine.

[0067] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. An engine, characterized in that, include: The cylinder block has an air guide hole and an exhaust chamber. The air guide hole extends towards the crankcase side of the cylinder block, and the exhaust chamber is located below the air guide hole and communicates with the air guide hole. The exhaust chamber is open. A cylinder head is located at the top of the cylinder body, and an air inlet hole communicating with the air guide hole is passed through the cylinder head; The cylinder head has an intake side and an exhaust side on both sides respectively. The side wall of the cylinder head between the intake side and the exhaust side is recessed to form an air guide cavity. The air guide cavity extends through the cylinder head in the direction from the intake side to the exhaust side. The air inlet is opened in the air guide cavity. The cylinder head includes a cylinder head body and a cylinder cover. The cylinder head body is connected to the cylinder body. The top of the cylinder head body is recessed to form a receiving groove, and the cylinder cover is placed outside the receiving groove. Two clearance holes pass through the receiving groove and communicate with the air guide cavity. Two first mounting holes pass through the bottom of the air guide cavity. The cylinder body is provided with multiple second mounting holes, and the clearance holes, the first mounting holes, and the second mounting holes are correspondingly arranged.

2. The engine according to claim 1, characterized in that, The cylinder body has a windward side and a leeward side on its two sides, and the exhaust chamber extends through the cylinder body along the direction from the windward side to the leeward side.

3. The engine according to claim 2, characterized in that, The bottom of the exhaust chamber near the windward side is provided with a windbreak, which extends toward the cylinder head.

4. The engine according to claim 1, characterized in that, The receiving groove is provided with a rocker arm support, which seals and blocks the two clearance holes.

5. The engine according to claim 1, characterized in that, The receiving groove has two first connecting holes that communicate with the air guide cavity; the bottom of the air guide cavity has two second connecting holes that correspond to one of the first connecting holes. It also includes two connecting pipes, both of which are located inside the air guide cavity, and the two ends of the connecting pipes are respectively connected to the first connecting hole and the second connecting hole.

6. The engine according to claim 1, characterized in that, The air guide cavity is provided with two support columns, and the two ends of the support columns are respectively connected to the top and bottom of the air guide cavity.

7. The engine according to claim 1, characterized in that, The air guide cavity is provided with air guide blades, and a guide groove is formed between the air guide blades and the bottom of the air guide cavity. The guide groove is connected to the air inlet, and the end of the guide groove near the exhaust side is a closed structure.

8. A generator set, characterized in that, The engine included in any one of claims 1-7.

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