Cylinder head cover with integrated maze structure

Abstract

The present invention relates to the field of combustion engine technology, specifically a cylinder head cover with an integrated labyrinth structure, comprising a cover body and a cover plate disposed within the cover body, a labyrinth assembly, and a heat-conducting assembly. The labyrinth assembly is disposed on the top inner wall of the cover body, and the heat-conducting assembly is disposed within the inner ring of the cover body and positioned between the cover body and the cover plate. An air duct is provided through the cover plate. Through the cover plate, the heat-conducting assembly, and a plurality of staggered partitions, the present invention effectively separates high-temperature oil and gas, reducing the amount of high-temperature oil and gas entering the combustion chamber. This prevents high-temperature oil and gas from entering the combustion chamber, resulting in incomplete oil combustion and increased wear between components. This effectively ensures the sealing performance of the combustion engine, and thus the performance of plug-in hybrid electric vehicles.

Description

Technical Field

[0001] The present invention relates to the technical field of combustion engines, in particular to a cylinder head cover with an integrated labyrinth structure. Background Art

[0002] New energy vehicles primarily include plug-in hybrid, pure electric, and fuel cell-powered vehicles. Plug-in hybrids combine the advantages of traditional combustion engines and electric motors, improving fuel economy. Cylinders, piston rings, and other components in combustion engines are core components that require a seal during operation. The sealing device for combustion engines primarily consists of a cylinder head cover, which is fixed to the cylinder head to protect internal engine components and ensure proper engine operation.

[0003] When a combustion engine is operating, high-temperature oil and gas will leak into the combustion chamber through the gap between the piston group and the cylinder. Once in the combustion chamber, the high-temperature oil and gas will not be able to completely burn the engine oil, causing carbon deposits to form inside the combustion chamber, accelerating the wear between the piston rings and the cylinder wall, resulting in a decrease in the sealing performance of the combustion engine, and affecting the normal operation of the combustion engine. To address the above problems, the existing technology has a better solution. By installing multiple labyrinth-shaped oil and gas separation walls inside the cylinder head cover set at the top of the cylinder head, the shape of the intake or exhaust passages on the cylinder head is changed. The high-temperature oil and gas are adsorbed during the leakage process, reducing the high-temperature oil and gas from entering the combustion chamber, avoiding the formation of carbon deposits inside the combustion chamber due to incomplete combustion of the engine oil, and ensuring the normal operation of the combustion engine. However, the following defects still exist: due to the fixed position of the oil-gas separation wall, the flow path of the high-temperature oil and gas inside the cover will be fixed, limiting the oil-gas separation effect. Some high-temperature oil and gas will still enter the combustion chamber, and under the intermolecular force of the oil itself, the separated oil will adhere to the surface of the oil-gas separation wall and cannot be reused, resulting in increased friction between the various components of the engine. It will also affect the sealing effect of the combustion engine due to wear, which will still affect the normal operation of the engine, thereby reducing the performance of plug-in hybrid new energy vehicles.

[0004] Therefore, in order to solve the above problems, an integrated labyrinth structure cylinder head cover is proposed. Summary of the Invention

[0005] The present invention provides an integrated labyrinth-structure cylinder head cover that solves the problem of a fixed oil-gas separation wall limiting the oil-gas separation effect and causing separated oil to adhere to the surface of the oil-gas separation wall, reducing the oil recovery rate and affecting the normal operation of the engine. By utilizing a cover plate, a heat-conducting assembly, and a plurality of staggered baffles, the baffles can be heated to a phase transition temperature during the oil-gas separation process, reducing their hardness. This allows the baffles to swing during oil-gas flow, changing the oil-gas flow path and increasing the number of collisions between the oil and gas and the baffles, thereby improving the oil-gas separation effect. Furthermore, the swinging baffles can strike the guide plates provided on the cover plate surface, accelerating the dripping of oil adhered to the baffle surfaces and ensuring the oil recovery rate. Simultaneously, the heat-conducting assembly cools the interior of the cover, assisting in condensing the oil in the oil and gas to ensure an oil recovery rate. The separated gas agitates the water during discharge, evenly distributing the water temperature and reducing the temperature difference between the inner and outer surfaces of the cover. This prevents uneven stress on the cover surface from causing deformation of the cover and affecting the sealing performance, thereby ensuring the normal operation of the engine.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A cylinder head cover with an integrated labyrinth structure includes a cover body and a cover plate arranged inside the cover body, and also includes a labyrinth assembly and a heat-conducting assembly. The labyrinth assembly is arranged on the top inner wall of the cover body, and the heat-conducting assembly is arranged on the inner circle of the cover body and is located between the cover body and the cover plate. An air duct is provided through the cover plate. When the engine is working, oil and gas enter the interior of the cover body through the air duct and hit the labyrinth assembly. When the oil and gas hit the labyrinth assembly, the oil and gas are separated and the heat-conducting assembly is heated. The gas flows out of the labyrinth assembly and is discharged through the heat-conducting assembly.

[0008] Preferably, the maze assembly includes a partition, and the partitions are provided in plurality and are staggered on the top inner wall of the cover body, and are arranged in an "eight" shape between two adjacent partitions. The partition is provided with a plurality of guide grooves in an array on the side facing the air guide tube, and a plurality of spoiler holes are arranged in an array inside each of the guide grooves.

[0009] By adopting the above scheme, the oil and gas can passively adjust the pressure and gather in the corresponding guide groove to flow during the flow between multiple baffles. The flow speed is adjusted by the passive change of pressure, thereby interfering with the flow path. At the same time, the impact force of part of the oil and gas when passing through the spoiler holes is used to make the oil and gas flow irregularly, thereby increasing the impact rate of the oil and gas with the baffle to improve the oil and gas separation effect, thereby ensuring the normal operation of the engine.

[0010] Preferably, a spiral groove is provided inside the spoiler hole, and the spiral directions of the spiral grooves inside the spoiler holes provided in two adjacent guide grooves are opposite.

[0011] By adopting the above scheme, a small amount of oil and gas can form a vortex under the action of the corresponding spiral groove when passing through the turbulent hole, thereby disturbing the oil and gas flowing inside the cover, interfering with the flow path of the oil and gas, and improving the oil and gas separation efficiency, which further ensures the normal operation of the engine.

[0012] Preferably, the heat-conducting component includes an annular frame, a hollow column, a rotating rod, a stirring blade 1, a stirring blade 2, an air inlet pipe and an air outlet pipe. The annular frame is fitted on the inner wall of the cover body, the annular frame is hollow and filled with water, the hollow column is arranged inside the annular frame, the air inlet pipe and the air outlet pipe are coaxial and pass through the annular frame and the hollow column, the rotating rod is arranged inside the annular frame and coaxially passes through the hollow column, the stirring blade 1 is arranged inside the hollow column and on the rotating rod, and there are two stirring blades 2 and they are symmetrically arranged at both ends of the rotating rod.

[0013] It can be seen that when the engine is working, there is a large temperature difference between the inside and outside of the cover, especially in the low temperature environment in winter. The outer wall of the cover will greatly increase the temperature difference between the inside and outside of the cover under the scouring effect of the airflow, causing the inner and outer surfaces of the cover to deform due to uneven stress caused by thermal expansion and contraction, thereby affecting the sealing effect of the cover and further affecting the normal operation of the engine. Therefore, this solution is adopted. The annular frame can play the role of reinforcing ribs to support the inner wall of the cover. When the gas flows from the inside of the cover to the outside, it can stir the water flow inside the annular frame, and use the flowing water flow to absorb the high temperature inside the cover and gradually dissipate it outward. On the one hand, it can assist the condensation of oil and gas inside the cover to ensure the recovery rate of the engine oil. On the other hand, it can reduce the temperature difference between the inner and outer surfaces of the cover to avoid deformation of the cover due to excessive temperature difference and affect the sealing effect, thereby ensuring the normal operation of the engine.

[0014] Preferably, the cover plate is fitted with the annular frame and an oil storage tank is opened on the upper surface. The partition is a memory alloy and extends to the interior of the oil storage tank. An oil outlet pipe is provided at one end of the interior of the cover plate away from the air duct. The oil outlet pipe is arranged in an "S" shape and the upper end extends to the interior of the oil storage tank.

[0015] By adopting the above scheme, the bottom of the partition is extended to the inside of the oil storage tank, and the intermolecular force between the oil inside the oil storage tank and the oil on the surface of the partition is used to draw the oil attached to the surface of the partition downward, thereby accelerating the falling speed of the oil on the surface of the partition. At the same time, under high temperature conditions, the partition is heated to the phase change temperature and becomes softened. During the flow of oil and gas, the partition is driven to swing, which accelerates the dripping of oil on the surface of the partition, thereby accelerating the oil recovery speed to ensure the normal operation of the engine.

[0016] Preferably, the depth of the oil storage tank is gradually increased from the air guide pipe to the oil outlet pipe.

[0017] By setting the depth of both ends of the oil storage tank, the oil falling into the oil storage tank can flow to the position of the oil outlet pipe under the action of gravity, avoiding the accumulation of oil separated from the oil and gas inside the oil storage tank, thereby speeding up the recovery of the oil.

[0018] Preferably, a cavity is provided inside the cover plate, and the cavity is filled with argon gas.

[0019] As can be seen, when the engine is operating, the hot oil and gas first come into direct contact with the lower surface of the cover plate, forcing the cover plate to heat up. This high temperature can cause the oil to vaporize again, thus affecting the oil recovery effect. Therefore, this solution is adopted. By creating a cavity inside the cover plate and filling it with argon gas, the low thermal conductivity of argon gas is utilized to prevent heat from the bottom of the cover plate from transferring upward, thus preventing the oil from entering the oil reservoir from vaporizing again. This ensures the oil recovery effect, reduces oil loss, and thus ensures the normal operation of the engine.

[0020] Preferably, a plurality of guide plates are provided inside the oil storage tank, each of the guide plates is provided on a side of the corresponding partition away from the air duct, and each of the guide plates is provided in parallel with the corresponding partition.

[0021] It can be seen that the intermolecular forces of the engine oil itself will cause it to adhere to the surface of the partition, preventing the oil from quickly falling into the oil storage tank for recovery and treatment. Therefore, this solution is adopted. The set guide plate can block the partition when the oil and gas drive the partition, which has softened under high temperature, to swing. The partition will hit the guide plate during the swinging process. The vibration generated by the impact and the inertia generated by the partition when it is blocked by the guide plate will accelerate the dripping of the engine oil on the partition surface, realizing rapid recovery of the engine oil. At the same time, vertical drainage grooves can also be opened on the surface of the guide plate to further accelerate the recovery of the engine oil and ensure the normal operation of the engine.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. Through multiple staggered baffles, the flow path of oil and gas can be guided, and the distance change between two adjacent baffles can be used to change the pressure of oil and gas during the flow, and a small amount of oil and gas will impact itself when passing through the turbulent holes inside the baffle, so that the number of collisions between oil and gas and the baffles increases during the flow between multiple baffles, and the high temperature attached to the oil and gas during the flow can heat the baffles, so that the baffles are heated to the phase change temperature and softened and continuously swing with the flow of oil and gas, and the oil dripping speed on the surface of the baffle is accelerated on the basis of increasing the number of collisions between oil and gas and the baffles, that is, the oil recovery rate is improved while the oil recovery speed is accelerated, and the high-temperature oil and gas entering the combustion chamber is reduced, and the incomplete combustion of the oil in the combustion chamber is avoided to increase the wear between the various parts of the engine, that is, the sealing of the engine is guaranteed, thereby ensuring the normal operation of the engine.

[0024] 2. By setting up the cover plate and the oil storage tank opened on the upper surface of the cover plate, the bottom of the partition can be immersed in the oil in the oil storage tank during the oil-gas separation process, preventing oil and gas from escaping from the gap between the partition plate and the cover plate and reducing the oil recovery rate. At the same time, the oil accumulated inside the oil storage tank can come into contact with the oil attached to the surface of the partition plate, and the intermolecular force and gravity of the oil itself are used to attract the oil on the surface of the partition plate to the inside of the oil storage tank, thereby accelerating the oil recovery speed and ensuring the normal operation of the engine.

[0025] 3. The cover plate and the annular frame are provided to reinforce the cover from the inside of the cover. At the same time, the water flow provided inside the annular frame is used to stir the water using the stirring blades 1 and 2 during the discharge of the gas separated from the oil and gas, so that the water absorbs the heat inside the cover and distributes the absorbed heat evenly. On the one hand, the heat transfer effect of the water can be used to reduce the temperature difference between the inner and outer surfaces of the cover, avoiding the thermal expansion and contraction effect caused by the large temperature difference between the inner and outer surfaces of the cover when the temperature is low in winter, which leads to uniform stress distribution and deformation on the surface of the cover. While ensuring that the deformation of the cover affects the sealing effect, the water can be used to cool the inside of the cover, so that the temperature inside the cover is reduced to assist in oil and gas condensation, improve the oil recovery rate, and further ensure the normal operation of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 An exploded view of the present invention;

[0028] Figure 3 For the present invention Figure 1 A schematic diagram of a partial cross-sectional structure;

[0029] Figure 4 For the present invention Figure 3Enlarged view of the middle part A;

[0030] Figure 5 It is a schematic diagram of the partial structure of the partition of the present invention;

[0031] Figure 6 For the present invention Figure 3 Enlarged view of the middle part B;

[0032] Figure 7 It is a partial cross-sectional structural schematic diagram of the heat conducting component of the present invention;

[0033] Figure 8 It is a schematic diagram of the cross-sectional connection structure of the cover plate, the partition plate and the guide plate of the present invention.

[0034] In the picture:

[0035] 1. Cover body;

[0036] 2. Cover plate; 21. Air guide tube; 22. Oil storage tank; 23. Oil outlet pipe; 24. Cavity; 25. Drain plate;

[0037] 3. Labyrinth assembly; 31. Partition; 311. Guide groove; 312. Spoiler hole; 313. Spiral groove;

[0038] 4. Heat-conducting component; 41. Ring frame; 42. Hollow column; 43. Rotating rod; 44. Stirring blade 1; 45. Stirring blade 2; 46. Air inlet pipe; 47. Air outlet pipe. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] See also Figures 1 to 8 The present invention provides an integrated labyrinth structure cylinder head cover, and the technical solution is as follows:

[0041] For details, please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5, an integrated labyrinth structure cylinder head cover, comprising a cover body 1 and a cover plate 2 arranged inside the cover body 1, and also comprising a labyrinth assembly 3 and a heat-conducting assembly 4. The labyrinth assembly 3 is arranged on the top inner wall of the cover body 1, and the labyrinth assembly 3 includes a partition 31, and a plurality of partitions 31 are provided and staggered on the top inner wall of the cover body 1, and an "eight" shape is arranged between two adjacent partitions 31. The partition 31 is provided with a plurality of guide grooves 311 in an array on the side facing the air guide pipe 21, and a plurality of spoiler holes 312 are arranged in an array inside each guide groove 311; a spiral groove 313 is opened inside the spoiler hole 312, and the spiral directions of the spiral grooves 313 inside the spoiler holes 312 arranged in two adjacent guide grooves 311 are opposite; the partition 31 is a memory alloy, and nickel-titanium alloy can be used.

[0042] The partition 31 is in the martensite phase at room temperature (when the engine has not been running for a long time) and has a relatively hard texture. Since the inside of the cover 1 is at room temperature, the oil and gas generated at the moment of engine startup enters between the cover plate 2 and the top inner wall of the cover 1 through the air duct 21 and flows between the multiple partitions 31. At this time, the partition 31 is relatively hard and will not swing, avoiding causing large resistance to the flow of oil and gas, so that the engine can start normally; as the engine continues to work, the partition 31 (nickel-titanium alloy) absorbs heat to the phase change temperature during the flow of high-temperature oil and gas, making its own texture softer, and the oil and gas will be affected by the adjacent The distance between the two partitions 31 changes and the wind pressure is passively adjusted and continuously impacts the corresponding partition 31. At the moment of wind pressure change, the flow path is automatically adjusted to make the partition 31 swing, and a small part of the oil and gas will enter the corresponding spoiler hole 312. The aperture change of the spoiler hole 312 and the spiral groove 313 opened inside the spoiler hole 312 are used to change its flow path, so that the oil and gas entering the spoiler hole 312 impacts the oil and gas between the two adjacent partitions 31 when flowing out, causing the oil and gas to move irregularly inside when flowing, increasing the number of collisions between the oil and gas and different partitions 31, thereby improving the recovery rate of the engine oil.

[0043] As an embodiment of the present invention, refer to Figure 3 、 Figure 6 and Figure 7The heat-conducting component 4 is arranged in the inner circle of the cover body 1 and is located between the cover body 1 and the cover plate 2. An air guide pipe 21 is provided on the cover plate 2. The heat-conducting component 4 includes an annular frame 41, a hollow column 42, a rotating rod 43, a stirring blade 1 44, a stirring blade 2 45, an air inlet pipe 46 and an air outlet pipe 47. The annular frame 41 is fitted on the inner wall of the cover body 1. The annular frame 41 is hollow and filled with water. The hollow column 42 is arranged inside the annular frame 41. The air inlet pipe 46 and the air outlet pipe 47 are coaxial and pass through the annular frame 41 and the hollow column 42. The rotating rod 43 is arranged inside the annular frame 41 and coaxially passes through the hollow column 42. The stirring blade 1 44 is arranged inside the hollow column 42 and is arranged on the rotating rod 43. There are two stirring blades 2 45 and they are symmetrically arranged at both ends of the rotating rod 43.

[0044] Under the above-mentioned setting conditions, the high-temperature oil and gas can heat the annular frame 41 during the flow of the annular frame 41, and the water stored in the annular frame 41 can be heated by the heat conduction effect of the annular frame 41. After the water in the annular frame 41 is heated, part of the heat is transferred to the cover body 1 through heat conduction, and the heat in the high-temperature oil and gas is absorbed at the same time, so as to reduce the temperature difference between the inner and outer surfaces of the cover body 1 in a low-temperature environment, and avoid uneven stress distribution on the surface of the cover body 1 caused by thermal expansion and contraction. The gas separated from the high-temperature oil and gas will enter the interior of the hollow column 42 during the process of entering the air outlet pipe 47 from the air inlet pipe 46. Since the air inlet pipe 46 and the air outlet pipe 47 are coaxially arranged, the gas in the hollow column 42 When the flow inside the column 42 is driven, the stirring blade 1 44 will rotate in a single direction with the rotating rod 43 as the rotating axis. Since the stirring blade 2 45 is provided at both ends of the rotating rod 43, the stirring blade 2 45 can stir the water stored in the annular frame 41 when following the rotation of the rotating rod 43, so that the heat absorbed by the water can be evenly distributed. At the same time, the annular frame 41 can act as a reinforcing rib on the inner wall of the cover body 1, realizing double protection of the cover body 1, effectively avoiding deformation of the cover body 1 and affecting the sealing performance of the cover body 1; and the water stored in the annular frame 41 can realize the cooling treatment of the high-temperature oil and gas inside the cover body 1, assist the condensation of oil and gas, and is more conducive to the recovery of engine oil.

[0045] As an embodiment of the present invention, refer to Figure 3 、 Figure 4 and Figure 6 The cover plate 2 is fitted with the annular frame 41 and an oil storage tank 22 is opened on the upper surface. The partition 31 extends to the inside of the oil storage tank 22. An oil outlet pipe 23 is provided at the end of the cover plate 2 away from the air guide pipe 21. The oil outlet pipe 23 is arranged in an "S" shape and the upper end extends to the inside of the oil storage tank 22. The "S" shape can be used to keep part of the engine oil in the oil outlet pipe 23 to prevent gas from being discharged from the oil outlet pipe 23.

[0046] Under the above-mentioned setting conditions, the oil in the oil storage tank 22 can contact the partition 31, preventing oil and gas from escaping from the gap between the partition 31 and the cover plate 2 and reducing the oil recovery rate. At the same time, the intermolecular force and gravity of the oil itself are used to attract the oil on the surface of the partition 31 into the interior of the oil storage tank 22, thereby accelerating the oil recovery speed.

[0047] As an embodiment of the present invention, refer to Figure 8 The depth of the oil storage tank 22 is gradually increased from the air guide pipe 21 to the oil outlet pipe 23; a plurality of guide plates 25 are arranged inside the oil storage tank 22, each guide plate 25 is arranged on the side of the corresponding partition 31 away from the air guide pipe 21, and each guide plate 25 is arranged parallel to the corresponding partition 31.

[0048] Under the above-mentioned setting conditions, the oil dripping into the oil storage tank 22 will flow to the position of the oil outlet pipe 23 under the action of gravity, so that the oil can be smoothly recovered. In addition, the set guide plate 25 can increase the number of collisions between the oil and gas during the flow process, and at the same time, the partition 31 can be blocked during the swinging process. The inertia generated by the collision between the partition 31 and the guide plate 25 when the partition 31 swings assists the oil attached to the surface of the partition 31 to drip, thereby further improving the oil recovery rate and accelerating the oil recovery speed.

[0049] As an embodiment of the present invention, refer to Figure 8 A cavity 24 is defined inside the cover plate 2 , and the cavity 24 is filled with argon gas.

[0050] Under the above-mentioned setting conditions, argon gas can use its own low thermal conductivity to block the heat on both sides of the cover plate 2, preventing the heat from the lower surface of the cover plate 2 from being transferred to the upper surface of the cover plate 2, causing the dripping oil to vaporize again and affecting the oil recovery rate.

[0051] Working principle:

[0052] The cover 1 is sealed and mounted on the cylinder head. When the engine is started, the oil and gas flow through the air duct 21 to the top of the cover plate 2 and flow between the multiple partitions 31. Since the interior of the cover 1 is at room temperature at the moment of engine startup, the partitions 31 are relatively hard at room temperature. The partitions 31 do not swing during the oil and gas flow, which means that the oil and gas encounter little resistance during the flow, ensuring normal engine startup.

[0053] As the engine continues to operate, the oil and gas gradually rise to a high temperature. The partition 31 absorbs the heat from the oil and gas to the phase transition temperature and then softens. During the oil and gas flow, the partition 31 can continuously change its motion state under the action of the flow-turbulating hole 312 and the spiral groove 313 provided in the flow-turbulating hole 312, thereby increasing the number of collisions between the oil and gas and the partition 31 to ensure the oil recovery rate. During the oil and gas collision with the partition 31, due to its relatively soft texture, the partition 31 can swing with the flow of the oil and gas, further changing the oil flow path and increasing the number of collisions between the oil and gas and the partition 31, thereby improving the oil recovery rate.

[0054] During the swinging process, the partition 31 is blocked by the guide plate 25 and continuously hits the guide plate 25. The vibration and inertia of the partition 31 when hitting the guide plate 25 can accelerate the oil attached to the surface of the partition 31 to drip into the oil storage tank 22. The oil inside the oil storage tank 22 can submerge the bottom of the partition 31, preventing the gap between the bottom of the partition 31 and the cover plate 2 from escaping oil and gas. At the same time, the oil in the oil storage tank 22 contacts the oil on the surface of the partition 31, and can use the intermolecular force of the oil itself and gravity to absorb the oil on the surface of the partition 31, thereby accelerating the recovery of the oil.

[0055] When the high-temperature oil and gas flow between the multiple partitions 31, the annular frame 41 can be heated, and the water in the annular frame 41 can be heated by the heat transfer effect during the heating of the annular frame 41, so that the heat inside the cover body 1 is transferred outward in a step-by-step manner. The separated gas can drive the stirring blade 1 44 to rotate during the flow from the air inlet pipe 46 to the air outlet pipe 47. When the stirring blade 1 44 rotates, the rotating rod 43 can be used to drive the two stirring blades 2 45 to stir the water inside the annular frame 41, so that the heat absorbed by the water in the annular frame 41 is evenly distributed, avoiding direct contact between the high-temperature gas and the side wall of the cover body 1, resulting in a large temperature difference between the inside and outside of the cover body 1 in the low temperature environment in winter, thereby avoiding the uneven stress distribution on the surface of the cover body 1 caused by the thermal expansion and contraction effect, and at the same time, with the supporting role of the annular frame 41 inside the cover body 1, double protection of the cover body 1 is achieved, and the sealing between the cover body 1 and the cylinder head is guaranteed on the basis of avoiding deformation of the cover body 1, thereby ensuring the normal operation of the engine.

[0056] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An integrated labyrinth structure cylinder head cover, comprising a cover body (1) and a cover plate (2) arranged inside the cover body (1), characterized in that: The invention also includes a labyrinth component (3) and a heat-conducting component (4), wherein the labyrinth component (3) is arranged on the top inner wall of the cover body (1), and the heat-conducting component (4) is arranged on the inner circle of the cover body (1) and is located between the cover body (1) and the cover plate (2). An air guide pipe (21) is provided through the cover plate (2). When the engine is working, oil and gas enter the interior of the cover body (1) through the air guide pipe (21) and hit the labyrinth component (3). When the oil and gas hit the labyrinth component (3), the oil and gas are separated and the heat-conducting component (4) is heated. After the gas flows out of the labyrinth component (3), it is discharged through the heat-conducting component (4). The heat-conducting component (4) comprises an annular frame (41), a hollow column (42), a rotating rod (43), a stirring blade (1) (44), a stirring blade (2) (45), an air inlet pipe (46) and an air outlet pipe (47); the annular frame (41) is arranged in contact with the inner wall of the cover body (1); the annular frame (41) is hollow and filled with water; the hollow column (42) is arranged inside the annular frame (41); the air inlet pipe (46) and the air outlet pipe (47) are coaxial and pass through the annular frame (41) and the hollow column (42); the rotating rod (43) is arranged inside the annular frame (41) and coaxially passes through the hollow column (42); the stirring blade (1) (44) is arranged inside the hollow column (42) and on the rotating rod (43); and the stirring blade (2) (45) is provided with two and symmetrically arranged at both ends of the rotating rod (43).

2. The integrated labyrinth structure cylinder head cover according to claim 1, characterized in that: The labyrinth assembly (3) comprises a partition (31), a plurality of partitions (31) are provided and staggered on the top inner wall of the cover body (1), and an "eight" shape is formed between two adjacent partitions (31). A plurality of guide grooves (311) are arranged in an array on one side of the partition (31) facing the airway (21), and a plurality of spoiler holes (312) are arranged in an array inside each of the guide grooves (311).

3. The integrated labyrinth structure cylinder head cover according to claim 2, characterized in that: A spiral groove (313) is provided inside the spoiler hole (312), and the spiral directions of the spiral grooves (313) inside the spoiler holes (312) provided in two adjacent guide grooves (311) are opposite.

4. The integrated labyrinth structure cylinder head cover according to claim 2, characterized in that: The cover plate (2) is fitted with the annular frame (41) and has an oil storage tank (22) on its upper surface. The partition plate (31) is made of a memory alloy and extends into the interior of the oil storage tank (22). An oil outlet pipe (23) is provided at one end of the interior of the cover plate (2) away from the air guide pipe (21). The oil outlet pipe (23) is arranged in an "S" shape and has an upper end extending into the interior of the oil storage tank (22).

5. The integrated labyrinth structure cylinder head cover according to claim 4, characterized in that: The depth of the oil storage tank (22) is gradually increased from the air guide pipe (21) to the oil outlet pipe (23).

6. The integrated labyrinth structure cylinder head cover according to claim 4, characterized in that: A cavity (24) is provided inside the cover plate (2), and the interior of the cavity (24) is filled with argon gas.

7. The integrated labyrinth structure cylinder head cover according to claim 5, characterized in that: A plurality of guide plates (25) are provided inside the oil storage tank (22), each of the guide plates (25) is provided on a side of the corresponding partition plate (31) away from the air guide pipe (21), and each of the guide plates (25) is provided in parallel with the corresponding partition plate (31).

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