Engine piston cooling gallery structure

Abstract

The utility model relates to the field of engine piston, and disclose an engine piston cooling channel structure, including ring part, apron and two pin parts, the apron fixed mounting is at the top of ring part, the inside installation of ring part has cooling assembly, the inner wall mounting of apron has heat dissipation subassembly, the cooling assembly includes cooling hole, the cooling hole is set up in the inside of ring part, the top connection installation of cooling hole has liquid inlet pipe and liquid outlet pipe, the inside inner wall of cooling hole is installed two groups first flow guide ring, the inside inner wall of liquid inlet pipe and liquid outlet pipe all installs a group second flow guide ring, the diameter of first flow guide ring one side is greater than the diameter of the other side. Through first flow guide ring and second flow guide ring, make cooling liquid automatic flow, in order to facilitate the circulation cooling, through the radiator pipe and fin, reduce the flow velocity of cooling liquid in the radiator pipe, accelerate the heat dissipation of cooling liquid.

Description

Technical Field

[0001] This utility model relates to the field of engine pistons, specifically to an engine piston cooling channel structure. Background Technology

[0002] The engine piston is a seal inside the engine cylinder used to ensure the high pressure of the gas in the combustion chamber. During engine operation, the piston is subjected to very high temperatures. If the piston cannot dissipate heat effectively, it is easy to melt or be damaged. Therefore, cooling is required.

[0003] The publication number CN215444239U discloses a piston and engine with a three-section cooling circulation oil inlet channel. The oil inlet channel includes oil inlet sections arranged sequentially from bottom to top, and the oil inlet sections are cylindrical in shape.

[0004] The aforementioned piston improves cooling performance and reduces high-temperature load on the piston. However, during the cooling process, the coolant remains stagnant, reducing cooling efficiency and hindering automatic circulation for cooling. Furthermore, the circulated coolant retains a significant amount of heat, making heat dissipation difficult. Utility Model Content

[0005] The purpose of this invention is to provide an engine piston cooling channel structure to solve the technical problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An engine piston cooling channel structure includes a ring, a skirt, and two pins. The skirt is fixedly mounted on the top of the ring. A cooling assembly is installed inside the ring, and a heat dissipation assembly is installed on the inner wall of the skirt. The cooling assembly includes cooling holes located inside the ring. An inlet pipe and an outlet pipe are connected to the top of the cooling holes. Two sets of first guide rings are installed on the inner wall of the cooling holes, and a set of second guide rings are installed on the inner walls of both the inlet pipe and the outlet pipe.

[0007] Preferably, the diameter of one side of the first guide ring is larger than the diameter of the other side, and the two sets of first guide rings are symmetrically located inside the cooling hole.

[0008] Preferably, the inlet pipe corresponds to the starting end of the two sets of first guide rings, and the outlet pipe corresponds to the ending end of the two sets of first guide rings.

[0009] Preferably, the top diameter of the second guide ring inside the inlet pipe is larger than the bottom diameter, and the flow direction of the second guide ring inside the outlet pipe is opposite to that of the second guide ring inside the inlet pipe.

[0010] Preferably, the heat dissipation assembly includes two diversion pipes, which are respectively fixedly installed at the top ends of the inlet pipe and the outlet pipe. Two heat dissipation pipes are connected and installed between the two diversion pipes. Several fins are fixedly installed on the outer side of the heat dissipation pipes and on the inner wall of the skirt.

[0011] Preferably, the side view of the diversion tube is U-shaped, and the interior of the two diversion tubes are respectively connected to the inlet tube and the outlet tube.

[0012] Preferably, the two shunt pipes are located outside the two pins, and the two shunt pipes are interconnected with the interior of the two heat dissipation pipes.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1) This cooling channel structure, by setting up cooling components, allows the coolant to flow through the first guide ring, which guides the flow of the coolant. Through the second guide ring inside the inlet and outlet pipes, the piston slides back and forth, allowing the coolant to flow automatically for circulation and cooling.

[0014] 2) In this cooling channel structure, by setting up heat dissipation components, the coolant flows through the split pipe to the two heat dissipation pipes respectively. The fins increase the contact area with the air, reduce the flow speed of the coolant in the heat dissipation pipes, and accelerate the heat dissipation of the coolant. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an engine piston cooling channel according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the cooling component in an embodiment of this utility model; Figure 3 This is a schematic diagram of the internal structure of the cooling hole in an embodiment of this utility model; Figure 4 This is a schematic diagram of the internal structure of the heat dissipation component in an embodiment of this utility model.

[0016] In the figure: 1. Ring; 2. Skirt; 3. Pin; 4. Cooling assembly; 5. Heat dissipation assembly; 6. Cooling hole; 7. Liquid inlet pipe; 8. Liquid outlet pipe; 9. First guide ring; 10. Second guide ring; 11. Diverter pipe; 12. Heat dissipation pipe; 13. Fin. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1 Combination Figures 1-4 An engine piston cooling channel structure includes a ring 1, a skirt 2 and two pins 3. The skirt 2 is fixedly installed on the top of the ring 1. A cooling assembly 4 is installed inside the ring 1, and a heat dissipation assembly 5 is installed on the inner wall of the skirt 2.

[0019] See Figure 2 and Figure 3 Furthermore, the cooling assembly 4 includes a cooling hole 6, which is opened inside the ring portion 1. An inlet pipe 7 and an outlet pipe 8 are connected and installed at the top of the cooling hole 6. Two sets of first guide rings 9 are installed on the inner wall of the cooling hole 6, and a set of second guide rings 10 are installed on the inner wall of both the inlet pipe 7 and the outlet pipe 8.

[0020] The diameter of one side of the first guide ring 9 is larger than the diameter of the other side. The two sets of first guide rings 9 are located inside the cooling hole 6 and are symmetrical to each other. The coolant flows through the first guide ring 9 and the second guide ring 10.

[0021] The inlet pipe 7 corresponds to the starting end of the two sets of first guide rings 9, and the outlet pipe 8 corresponds to the end of the two sets of first guide rings 9. The coolant enters the cooling hole 6 through the inlet pipe 7 and flows to both sides to converge at the outlet pipe 8 for discharge.

[0022] The top diameter of the second guide ring 10 inside the liquid inlet pipe 7 is larger than the bottom diameter. The second guide ring 10 inside the liquid outlet pipe 8 has the opposite flow direction to the second guide ring 10 inside the liquid inlet pipe 7. The liquid inlet pipe 7 is used to transport coolant to the cooling hole 6, and it flows through the first guide ring 9 to the liquid outlet pipe 8 for discharge.

[0023] Specifically, the coolant flows to both sides through the first guide ring 9 located inside the cooling hole 6 and converges at the outlet pipe 8 for discharge. The first guide ring 9 is used to guide the flow of coolant and accelerate the cooling of the piston.

[0024] Example 2 See Figure 4Furthermore, based on Embodiment 1, the heat dissipation assembly 5 includes two diversion pipes 11, which are respectively fixedly installed at the top of the liquid inlet pipe 7 and the liquid outlet pipe 8. Two heat dissipation pipes 12 are connected and installed between the two diversion pipes 11. Several fins 13 are fixedly installed on the outside of the heat dissipation pipes 12 and on the inner wall of the skirt 2.

[0025] The side view of the manifold 11 is U-shaped. The interior of the two manifolds 11 is connected to the inlet pipe 7 and the outlet pipe 8 respectively. The coolant is discharged through the outlet pipe 8 into the corresponding manifold 11 and enters the two heat dissipation pipes 12 for heat dissipation.

[0026] Two diversion pipes 11 are located outside the two pins 3 respectively. The two diversion pipes 11 are interconnected with the interior of the two heat dissipation pipes 12. The diversion pipes 11 divert the coolant, and the fins 13 are used to dissipate the heat from the heat dissipation pipes 12.

[0027] Specifically, the coolant distribution pipe 11 allows the coolant to flow into the two heat dissipation pipes 12 respectively. The fins 13 increase the contact area with the air, accelerating the heat dissipation of the coolant. The coolant then flows into the inlet pipe 7 through the other end of the distribution pipe 11 for circulating cooling.

[0028] In actual operation, the coolant is sealed inside the cooling hole 6 and the heat dissipation pipe 12, and the piston heat is absorbed and cooled by the coolant. During cooling, the coolant enters the cooling hole 6 through the inlet pipe 7, passes through two sets of first guide rings 9, and flows to both sides in the cooling hole 6 during the piston's reciprocating sliding process, and converges at the outlet pipe 8 for discharge. The first guide rings 9 guide the flow of the coolant, accelerating the cooling of the piston. When dissipating heat, the coolant enters the distribution pipe 11 through the outlet pipe 8. The distribution pipe 11 allows the coolant to flow into the two heat dissipation pipes 12. The fins 13 absorb the heat in the coolant and increase the contact area with the air. As the coolant flows in the distribution pipe 11, it dissipates heat through the fins 13 and flows into the inlet pipe 7 through the other end of the distribution pipe 11 for circulating cooling.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An engine piston cooling channel structure, comprising a ring (1), a skirt (2), and two pins (3), wherein the skirt (2) is fixedly mounted on the top of the ring (1), characterized in that: A cooling assembly (4) is installed inside the ring (1), and a heat dissipation assembly (5) is installed on the inner wall of the skirt (2). The cooling assembly (4) includes a cooling hole (6), which is located inside the ring (1). An inlet pipe (7) and an outlet pipe (8) are connected and installed at the top of the cooling hole (6). Two sets of first guide rings (9) are installed on the inner wall of the cooling hole (6), and a set of second guide rings (10) are installed on the inner wall of both the inlet pipe (7) and the outlet pipe (8).

2. The engine piston cooling channel structure according to claim 1, characterized in that: The diameter of one side of the first guide ring (9) is larger than the diameter of the other side, and the two sets of first guide rings (9) are symmetrical to each other inside the cooling hole (6).

3. The engine piston cooling channel structure according to claim 1, characterized in that: The inlet pipe (7) corresponds to the starting end of the two sets of first guide rings (9), and the outlet pipe (8) corresponds to the end of the two sets of first guide rings (9).

4. The engine piston cooling channel structure according to claim 1, characterized in that: The top diameter of the second guide ring (10) inside the inlet pipe (7) is larger than the bottom diameter, and the second guide ring (10) inside the outlet pipe (8) has the opposite guiding direction to the second guide ring (10) inside the inlet pipe (7).

5. The engine piston cooling channel structure according to claim 1, characterized in that: The heat dissipation assembly (5) includes two diversion pipes (11), which are fixedly installed at the top of the inlet pipe (7) and the outlet pipe (8), respectively. Two heat dissipation pipes (12) are connected between the two diversion pipes (11), and several fins (13) are fixedly installed on the outside of the heat dissipation pipes (12) and on the inner wall of the skirt (2).

6. The engine piston cooling channel structure according to claim 5, characterized in that: The side view of the diversion pipe (11) is arranged in a "U" shape, and the interior of the two diversion pipes (11) is connected to the inlet pipe (7) and the outlet pipe (8) respectively.

7. The engine piston cooling channel structure according to claim 5, characterized in that: The two shunt pipes (11) are located outside the two pins (3) respectively, and the two shunt pipes (11) are interconnected with the interior of the two heat dissipation pipes (12).

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