Dustproof structure on power module housing of power generation device, power module and power generation device

Abstract

The utility model discloses a dustproof structure, power module and power generation equipment for power module shell of power generation equipment, and power module includes: the cover for forming combustion chamber, spark plug with the opposite terminal of height direction and ignition end and shell, and shell includes: the spark plug spacer sleeve of setting on spark plug, the part of spark plug is close to ignition end and is sealedly connected with spark plug spacer sleeve, and the part of spark plug is away from ignition end and has assembly gap with spark plug spacer sleeve, the cover has first assembly channel, and the cover assembly cover forms the oil gas chamber above combustion chamber, and spark plug spacer sleeve is embedded in first assembly channel and is sealedly connected with cover, and makes ignition end extend in combustion chamber through oil gas chamber, and dustproof structure includes: pressure relief groove, is located cover surface with first assembly channel and outside communication respectively, dust cover, setting on spark plug and spark plug spacer sleeve, to cover assembly gap, and dust cover is contacted with cover and is located above pressure relief groove.

Description

Technical Field

[0001] This utility model relates to the field of dust prevention for power generation equipment, and in particular to a dust prevention structure for the housing of a power module of a power generation equipment, a power module including the dust prevention structure, and a power generation equipment including the power module. Background Technology

[0002] Power generation equipment generally requires a good operating environment. However, some power generation equipment is used in distributed small-scale power generation networks. During use, it often needs to adapt to different external environments, such as outdoor locations, deserts, and rainforests. These environments are prone to foreign objects such as sand, insects, plant debris, rainwater, and liquids entering the interior of the power generation equipment.

[0003] In the power module of power generation equipment (such as an engine), a stainless steel spark plug spacer is usually installed between the spark plug and the aluminum alloy housing (cylinder head) to achieve a sealed connection between the spark plug and the cylinder head. The spark plug spacer acts as a "buffer," providing stable support for the spark plug even if the aluminum alloy cylinder head expands dramatically, thus preventing seal failure due to asynchronous expansion. As an isolation layer, the spark plug spacer effectively prevents direct contact between the spark plug and the cylinder head, mitigating the risk of electrochemical corrosion at its source. If the spark plug and cylinder head are assembled in direct contact, the relatively soft cylinder head will cause repeated wear on the contact surface during repeated disassembly and assembly, increasing the risk of seal failure. The spark plug spacer effectively prevents direct contact between the spark plug and the cylinder head, thus avoiding seal failure to a certain extent.

[0004] To facilitate the removal and replacement of spark plugs, the spark plugs are embedded in the spark plug spacer to achieve a detachable sealed connection, with an assembly gap between them. However, this presents the following problems:

[0005] 1. This assembly gap is in direct contact with the outside world, so the power generation equipment used in distributed small power generation networks may be affected by foreign objects entering the assembly gap. This will not only block the assembly gap, making it difficult to remove the spark plug from the spark plug spacer, but may also cause electrical faults.

[0006] 2. Generally, a rubber dust cover can be installed on the spark plug and spark plug spacer, and made to contact the cylinder head surface to cover the assembly gap. However, because the spark plug generates high temperature when it ignites in the combustion chamber, the cylinder head will deform due to thermal expansion and contraction. The lubricating oil in the oil-gas chamber used to lubricate the rocker arm mechanism will also heat up under the high temperature of the combustion chamber, generating high-pressure oil gas. Therefore, the oil gas will be sprayed out along the assembly channel between the spark plug spacer and the cylinder head, causing the dust cover to move away from the cylinder head under the action of the oil gas, forming a gap and losing its function of covering the assembly gap. This allows foreign objects to enter the assembly gap through the gap between the dust cover and the cylinder head.

[0007] This utility model solves at least one of the above problems. Utility Model Content

[0008] The purpose of this utility model is to solve at least one of the above problems by providing a dustproof structure for the power module housing of a power generation device, which uses a pressure relief groove to relieve high pressure. Oil The depressurization of the gas can stabilize the dust cover over the assembly gap between the spark plug and the spark plug spacer, prevent foreign objects from entering the assembly gap, improve the dustproof effect, and thus ensure the normal operation of the power generation equipment.

[0009] The objective of this utility model is achieved through the following technical solution:

[0010] A first aspect of this utility model provides a dustproof structure for a power module housing of a power generation device, the power module comprising:

[0011] The cover is used to form the combustion chamber;

[0012] Spark plugs have terminals and ignition terminals that are positioned opposite each other along the height direction;

[0013] The housing includes:

[0014] A spark plug spacer is fitted onto the spark plug and exposes the wiring terminal and the ignition terminal; the portion of the spark plug near the ignition terminal is sealed to the spark plug spacer, and the portion of the spark plug away from the ignition terminal has an assembly gap with the spark plug spacer.

[0015] The cover has a first assembly channel, and the cover is assembled on the cover to form an oil-gas chamber located above the combustion chamber; the spark plug spacer is embedded in the first assembly channel and sealed to the cover, so that the ignition end extends through the oil-gas chamber into the combustion chamber;

[0016] The dustproof structure includes:

[0017] Pressure relief grooves are provided on the surface of the cover and are connected to the first assembly channel and the outside.

[0018] A dust cover is fitted over the spark plug and the spark plug spacer to cover the assembly gap; the dust cover is in contact with the cover body and is located above the pressure relief groove.

[0019] In some possible embodiments of the first aspect, a plurality of first sealing rings are provided between the spark plug spacer and the first assembly channel, the first sealing rings being sleeved on the outer side of the spark plug spacer away from the ignition end.

[0020] In some possible embodiments of the first aspect, the power module further includes a cylinder block; the cover has a second assembly channel corresponding to the first assembly channel in the height direction; the spark plug spacer is embedded in the second assembly channel and sealed to the cover, so that the ignition end extends through the second assembly channel into the combustion chamber formed by the cover being mounted on the cylinder block.

[0021] In some possible implementations of the first aspect, a plurality of second sealing rings are provided between the spark plug spacer and the second assembly channel, the second sealing rings being sleeved on the outside of the spark plug spacer near the ignition end.

[0022] In some possible embodiments of the first aspect, the outer side of the spark plug spacer is provided with a protrusion, the protrusion comprising a plurality of annular protrusions spaced apart along the height direction, and a first sealing ring is provided between two adjacent annular protrusions;

[0023] The first assembly channel has an annular recess that is adapted to the protrusion; the protrusion is adapted to the annular recess so that the first sealing ring is located between the annular recess and the protrusion.

[0024] In some possible embodiments of the first aspect, the dust cover includes a top cover portion and an annular portion extending downward along the periphery of the top cover portion, the top cover portion having an opening and the annular portion having a hollow cavity;

[0025] When the dust cover is fitted onto the spark plug and the spark plug spacer, the spark plug passes through the through-hole so that the portion of the spark plug spacer away from the ignition end is embedded in the hollow cavity of the annular portion.

[0026] The annular portion is in contact with the cover and is located above the pressure relief groove.

[0027] In some possible embodiments of the first aspect, the number of pressure relief grooves is multiple, and the multiple pressure relief grooves are distributed in a ring array around the circumference of the first assembly channel on the surface of the cover.

[0028] In some possible implementations of the first aspect, the pressure relief groove is fan-shaped or rectangular.

[0029] In a second aspect, this utility model provides a power module, which is an engine, and the engine includes the aforementioned dustproof structure.

[0030] A third aspect of this utility model provides a power generation device, the power generation device including the aforementioned power module and generator, the power module having an output shaft and the generator having a rotor; the output shaft of the power module and the rotor of the generator are connected for converting the mechanical energy generated by the output shaft into electrical energy generated by the generator.

[0031] Compared with the prior art, the beneficial effects of this utility model are as follows: by using the pressure relief groove, the high-pressure oil and gas ejected from the first assembly channel between the spark plug spacer and the cover can be directly introduced into the outside through the pressure relief groove, instead of acting directly on the dust cover. This prevents the dust cover from detaching from the cover under the action of high-pressure oil and gas injection, stabilizes the dust cover's coverage of the assembly gap between the spark plug and the spark plug spacer, prevents foreign objects from entering the assembly gap, improves the dustproof effect, and thus ensures the normal operation of the power generation equipment in outdoor, desert, rainforest and other external environments. Attached Figure Description

[0032] Figure 1 This is a half-sectional structural diagram of the dustproof structure of this utility model;

[0033] Figure 2 This is a top view schematic diagram of the dustproof structure of this utility model.

[0034] Figure descriptions: 1. Spark plug; 10. Assembly gap; 11. Terminal; 2. Housing; 21. Cover; 210. First assembly channel; 2100. Annular recess; 211. Pressure relief groove; 22. Spark plug spacer; 220. Annular protrusion; 3. Cover; 4. Dust cover; 41. Top cover; 410. Through port; 42. Annular part; 5. First sealing ring; 100. Oil and gas chamber; 200. Rocker arm mechanism. Detailed Implementation

[0035] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0036] like Figure 1 and 2 As shown in the embodiment of this utility model, a dustproof structure is provided for the power module housing of a power generation device.

[0037] The power module can be, for example, an engine, preferably an internal combustion engine.

[0038] The engine has an output shaft, and the generator of the power generation equipment has a rotor. The output shaft of the engine is connected to the rotor of the generator. The output shaft drives the rotor to rotate, so as to convert the mechanical energy generated by the output shaft into electrical energy generated by the generator.

[0039] The power module includes spark plug 1, housing 2, and cover 3.

[0040] The spark plug 1 has a wiring terminal 11 and an ignition terminal (not shown in the figure) arranged opposite each other along the height direction.

[0041] The cover 3 can be made of aluminum alloy to form the combustion chamber (not shown in the figure); the combustion chamber is used by the spark plug 1 to ignite the fuel and release high-temperature and high-pressure gas, thereby driving the piston, crankshaft (not shown in the figure), and other components to move. This is a conventional or existing design of the engine combustion chamber, and will not be described in detail here.

[0042] The housing 2 includes a cover 21 and a spark plug spacer 22.

[0043] The cover 21 can be made of aluminum alloy and is assembled on the cover 3 to form an oil and gas chamber 100 located above the combustion chamber.

[0044] Understandably, the oil-gas chamber 100 is used to house the engine's rocker arm mechanism 200, which is immersed in lubricating oil. This is a standard design for the engine's oil-gas chamber 100 and will not be elaborated upon here.

[0045] The cover 21 has a first assembly channel 210, and the spark plug spacer 22 is embedded in the first assembly channel 210 and sealed to the cover 21, so that the ignition end extends into the combustion chamber through the oil and gas chamber 100.

[0046] It should be noted that the spark plug spacer 22 acts as a "buffer," providing stable support for the spark plug 1 even when the housing 21 expands violently due to heat, thus preventing sealing failure due to asynchronous expansion. As an isolation layer, the spark plug spacer 22 effectively prevents direct contact between the spark plug 1 and the housing 21, mitigating the risk of electrochemical corrosion at its source. If the spark plug 1 and housing 21 are directly assembled, the relatively soft housing 21 will repeatedly wear down the contact surface between the housing 21 and the spark plug 1 during repeated disassembly and assembly, increasing the risk of sealing failure. The spark plug spacer 22 effectively prevents direct contact between the spark plug 1 and the housing 21, thus avoiding sealing failure to a certain extent.

[0047] Spark plug spacer 22 is mounted on spark plug 1, exposing terminal 11 and ignition terminal.

[0048] It should be noted that the portion of spark plug 1 near the ignition end is sealed to spark plug spacer 22 (e.g., a detachable threaded connection), while the portion of spark plug 1 away from the ignition end has an assembly gap 10 with spark plug spacer 22. This assembly gap 10 is to facilitate the assembly and disassembly of spark plug 1 and spark plug spacer 22.

[0049] The dustproof structure includes a pressure relief groove 211 and a dust cover 4.

[0050] The pressure relief groove 211 is provided on the surface of the cover 21 and is connected to the first assembly channel 210 and the outside.

[0051] Understandably, when the cover 21 is heated and expands, the high-pressure oil and gas generated in the oil and gas chamber 100 can diffuse from the pressure relief groove 211 to the outside along the first assembly channel 210 between the spark plug spacer 22 and the cover 21.

[0052] The dust cover 4 is fitted onto the spark plug 1 and the spark plug spacer 22 to cover the assembly gap 10. The dust cover 4 is in contact with the cover body 21 and is located above the pressure relief groove 211.

[0053] The dust cover 4 can be made of rubber. Because rubber is elastic, it can strengthen the connection between the dust cover 4 and the spark plug 1 and the spark plug spacer 22. In addition, rubber is cheaper and easier to process than metal.

[0054] It should be noted that when the dust cover 4 comes into contact with the cover body 21, it covers the top of the first assembly channel 210.

[0055] When spark plug 1 ignites in the combustion chamber, it produces high-temperature gas. The cover 21 will deform due to thermal expansion and contraction. The lubricating oil in the oil-gas chamber 100 used to lubricate the rocker arm mechanism 200 will also heat up under the high temperature of the combustion chamber, generating high-pressure oil gas. Therefore, the oil gas will be sprayed out along the first assembly channel 210 between the spark plug spacer 22 and the cover 21. Under the continuous impact of the high-pressure oil gas, the dust cover 4 will soften and deform. After hardening, it will lose its elasticity and easily detach. This will create gaps between the dust cover 4 and the cover 21, as well as between the dust cover 4 and the spark plug 1 and the spark plug spacer 22. As a result, the assembly gap 10 between the spark plug 1 and the spark plug spacer 22 cannot be effectively covered, allowing foreign objects to enter the assembly gap 10 through the gaps.

[0056] The function of the pressure relief groove 211 is to relieve the high pressure ejected from the first assembly channel 210 OilGas can be directly introduced to the outside through the pressure relief groove 211 instead of acting directly on the dust cover 4. This prevents the dust cover 4 from softening and deforming under the impact of oil and gas injection, and prevents it from losing elasticity and easily detaching after hardening. It also stabilizes the dust cover 4 in covering the assembly gap 10 between the spark plug 1 and the spark plug spacer 22, preventing foreign objects from entering the assembly gap 10 and improving the dustproof effect. This ensures the normal operation of the power generation equipment in outdoor, desert, rainforest and other external environments.

[0057] In one specific embodiment, the power module further includes a cylinder block (not shown in the figure), and the cover 3 has a second assembly channel (not shown in the figure) corresponding to the first assembly channel 210 in the height direction.

[0058] Spark plug spacer 22 is embedded in the second assembly channel and sealed to the cover 3 so that the ignition end extends through the second assembly channel into the combustion chamber formed by the cover 3 being assembled on the cylinder block.

[0059] In one specific embodiment, a plurality of first sealing rings 5 ​​are provided between the spark plug spacer 22 and the first assembly channel 210, and the first sealing rings 5 ​​are sleeved on the outer side of the spark plug spacer 22 away from the ignition end.

[0060] The first sealing ring 5 strengthens the contact seal between the spark plug spacer 22 and the first assembly channel 210 of the cover 21, reduces the contact gap between the spark plug spacer 22 and the first assembly channel 210, and effectively reduces the leakage of oil and gas in the oil and gas chamber 100 from the first assembly channel 210.

[0061] In one specific embodiment, a plurality of second sealing rings (not shown in the figure) are provided between the spark plug spacer 22 and the second assembly channel, and the second sealing rings are sleeved on the outer side of the spark plug spacer 22 near the ignition end.

[0062] The second sealing ring strengthens the contact seal between the spark plug spacer 22 and the second assembly channel of the cover 3, reduces the contact gap between the spark plug spacer 22 and the second assembly channel, and effectively prevents the gas in the oil combustion chamber and the oil-gas chamber 100 from leaking into each other from the second assembly channel.

[0063] In one specific embodiment, the outer side of the spark plug spacer 22 is provided with a protrusion, the protrusion including a plurality of annular protrusions 220 spaced apart along the height direction, and a first sealing ring 5 is provided between two adjacent annular protrusions 220.

[0064] The first assembly channel 210 has an annular recess 2100 adapted to the protrusion; the protrusion is adapted to the annular recess 2100 so that the first sealing ring 5 is located between the annular recess 2100 and the protrusion.

[0065] The fitting installation of the protrusion and the annular recess 2100 serves as a guide and limiter, ensuring the accurate positioning of the spark plug spacer 22 when inserted into the first assembly channel 210, and preventing the spark plug spacer 22 from being skewed or misaligned. The first sealing ring 5 is pressed between the protrusion and the annular recess 2100, forming a stable compression space, which not only ensures uniform sealing pressure but also prevents the first sealing ring 5 from being sheared, curled, or squeezed out during insertion, thus improving the durability and reliability of the seal. Adjacent annular protrusions 220 form a "shoulder" that can axially fix the first sealing ring 5, preventing it from shifting or falling off due to friction or pressure during insertion or use. The cooperation between the protrusion and the annular recess 2100 makes the insertion process smoother, and the first sealing ring 5 is less likely to get stuck or damaged during disassembly, which is beneficial for maintenance and replacement. The multiple spaced annular protrusions 220, in conjunction with the corresponding recesses, are equivalent to multiple seals working together. Even if a seal fails in one place, the remaining parts can still maintain sealing performance, and it can also play an auxiliary role in the labyrinth seal.

[0066] In one specific embodiment, the dust cover 4 includes a top cover portion 41 and an annular portion 42 extending downward along the periphery of the top cover portion 41. The top cover portion 41 has an opening 410, and the annular portion 42 has a hollow cavity.

[0067] When the dust cover 4 is fitted onto the spark plug 1 and the spark plug spacer 22, the spark plug 1 passes through the opening 410, so that the part of the spark plug spacer 22 away from the ignition end is embedded in the hollow cavity of the annular part 42.

[0068] The annular portion 42 is in contact with the cover 21 and is located above the pressure relief groove 211.

[0069] The dust cover 4 is shaped like a "bottle cap". Its structure is simple and easy to install and remove. It can form a reliable dust cover and effectively block dust from entering the assembly gap 10 between the spark plug 1 and the spark plug spacer 22. Moreover, the "bottle cap" shape can often use standard parts or injection molded parts, which has low mold cost, fast production speed and is easy to replace.

[0070] In some specific embodiments, there are multiple pressure relief grooves 211, such as two, three, four or five, etc. The multiple pressure relief grooves 211 are distributed in a ring array on the surface of the cover 21 in the circumferential direction of the first assembly channel 210.

[0071] Since the cover 21 will deform due to thermal expansion and contraction, multiple pressure relief grooves 211 are arranged in a ring array to distribute the airflow evenly. This allows the oil and gas leaking from the first assembly channel 210 to be discharged evenly from multiple outlets, avoiding local vortices caused by unilateral leakage. This not only reduces local high temperature or noise, but also strengthens the stability of the multi-directional coverage of the dust cover 4, thereby further improving the coverage effect of the dust cover 4 on the assembly gap 10.

[0072] In some specific embodiments, the pressure relief groove 211 is fan-shaped or rectangular. The present invention does not limit the shape of the pressure relief groove 211; theoretically, it can be any shape, as long as it satisfies the pressure relief function.

[0073] This embodiment also provides a power module, which is an engine, and the engine includes the dustproof structure described above.

[0074] The engine is preferably an internal combustion engine. In a specific application scenario, the engine is a V6 engine. In order to match the "V" shape of the cylinders, the two rows of cylinders of the V6 engine are usually arranged at a certain angle (such as the common 60° or 90°). As a result, the cover naturally becomes inclined. Therefore, in order to prevent dust from clogging the pressure relief groove 211, the pressure relief groove 211 is designed along the inclined direction of the cover 21 so that the dust can be discharged from the pressure relief groove 211 along the inclined direction under the action of gravity.

[0075] This embodiment also provides a power generation device, which includes the engine and generator described above. The engine has an output shaft, and the generator has a rotor. The output shaft of the engine and the rotor of the generator are connected to each other for converting the mechanical energy generated by the engine into electrical energy generated by the generator.

[0076] This dustproof structure can be well applied to the housing 2 of the power generation equipment, providing a stable and effective dustproof effect for the engine of the power generation equipment, preventing foreign objects from entering, enabling the engine to smoothly convert mechanical energy into electrical energy generated by the generator, and ensuring that the power generation equipment can work stably.

[0077] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A dustproof structure for the housing of a power module in a power generation device, the power module comprising: Cover (3), used to form a combustion chamber; The spark plug (1) has a terminal (11) and an ignition terminal arranged opposite each other in the height direction; The housing (2) includes: A spark plug spacer (22) is fitted onto the spark plug (1) and exposes the terminal (11) and the ignition terminal; the part of the spark plug (1) near the ignition terminal is sealed to the spark plug spacer (22), and the part of the spark plug (1) away from the ignition terminal has an assembly gap (10) with the spark plug spacer (22). The cover (21) has a first assembly channel (210). The cover (21) is assembled on the cover (3) to form an oil-gas chamber (100) located above the combustion chamber. The oil-gas chamber (100) contains a rocker arm mechanism (200) lubricated by lubricating oil. The spark plug spacer (22) is embedded in the first assembly channel (210) and sealed to the cover (21) so that the ignition end extends through the oil-gas chamber (100) into the combustion chamber. The dustproof structure is characterized by comprising: Pressure relief groove (211) is provided on the surface of the cover (21) and is connected to the first assembly channel (210) and the outside. A dust cover (4) is fitted over the spark plug (1) and the spark plug spacer (22) to cover the assembly gap (10); the dust cover (4) is in contact with the cover body (21) and is located above the pressure relief groove (211).

2. The dustproof structure according to claim 1, characterized in that, A plurality of first sealing rings (5) are provided between the spark plug spacer (22) and the first assembly channel (210), and the first sealing rings (5) are sleeved on the outside of the spark plug spacer (22) away from the ignition end.

3. The dustproof structure according to claim 1, characterized in that, The power module also includes a cylinder block; the cover (3) has a second assembly channel corresponding to the first assembly channel (210) in the height direction; the spark plug spacer (22) is embedded in the second assembly channel and sealed to the cover (3) so that the ignition end extends through the second assembly channel into the combustion chamber formed by the cover (3) assembled on the cylinder block.

4. The dustproof structure according to claim 3, characterized in that, A plurality of second sealing rings are provided between the spark plug spacer (22) and the second assembly channel, and the second sealing rings are fitted on the outside of the spark plug spacer (22) near the ignition end.

5. The dustproof structure according to claim 2, characterized in that, The spark plug spacer (22) has a protrusion on its outer side, the protrusion including a plurality of annular protrusions (220) spaced apart along the height direction, and a first sealing ring (5) is provided between two adjacent annular protrusions (220). The first assembly channel (210) has an annular recess (2100) adapted to the protrusion; the protrusion is adapted to the annular recess (2100) so that the first sealing ring (5) is located between the annular recess (2100) and the protrusion.

6. The dustproof structure according to claim 1, characterized in that, The dust cover (4) includes a top cover (41) and an annular portion (42) extending downward along the periphery of the top cover (41). The top cover (41) has an opening (410), and the annular portion (42) has a hollow cavity. When the dust cover (4) is fitted onto the spark plug (1) and the spark plug spacer (22), the spark plug (1) passes through the opening (410) so that the part of the spark plug spacer (22) away from the ignition end is embedded in the hollow cavity of the annular part (42); The annular portion (42) is in contact with the cover (21) and is located above the pressure relief groove (211).

7. The dustproof structure according to claim 1, characterized in that, The number of pressure relief grooves (211) is multiple, and the multiple pressure relief grooves (211) are distributed in a ring array on the surface of the cover (21) in the circumference of the first assembly channel (210).

8. The dustproof structure according to claim 1, characterized in that, The pressure relief groove (211) is fan-shaped or rectangular.

9. A power module, characterized in that, The power module is an engine, and the engine includes the dustproof structure described in any one of claims 1-8.

10. A power generation device, characterized in that, The power generation equipment includes the power module and generator as described in claim 9, wherein the power module has an output shaft and the generator has a rotor; the output shaft of the power module and the rotor of the generator are connected to convert the mechanical energy generated by the output shaft into electrical energy generated by the generator.

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