Water-cooling cylinder body structure

Abstract

The utility model discloses a water-cooling cylinder body structure, which comprises a cylinder body, a water inlet pipe and a water outlet pipe, wherein a cavity-type tubular water channel is arranged in the cylinder body; a water outlet is formed in the upper end; a water inlet is formed in the side face of the cylinder body and communicated with the interior of the tubular water channel The axis of the water inlet is perpendicular to the axis of the tubular water channel. The water diversion nozzle is arranged on the inner wall of the inner ring of the tubular water channel and directly faces the water inlet; the water diversion plate is horizontally arranged in the tubular water channel, and the plate surface of the water diversion plate is perpendicular to the axis of the tubular water channel; the water diversion plate is positioned above the water diversion nozzle; the water diversion plates divide the tubular water channel part and are symmetrically arranged along the axis of the water inlet; a plurality of through holes are formed in the water diversion plate; and all the through holes are symmetrically arranged along the axis of the water inlet. Flow of cooling liquid in the cylinder body can be balanced, so that the overall heat dissipation of the cylinder body is uniform, and the phenomenon that the cooling liquid leaks due to thermal failure of a sealing gasket caused by over-high temperature of a part of areas is avoided.

Description

Technical Field

[0001] This utility model relates to the field of water-cooled cylinder block cooling structure design, specifically to a water-cooled cylinder block structure. Background Technology

[0002] The engine block is the core component that provides piston movement and fuel combustion, and its upper part is connected to the cylinder head. The lower end of the cylinder block generates a lot of heat during operation, which needs to be cooled by coolant. The coolant flows into the cylinder block, then into the cylinder head, and finally out, forming a circulation.

[0003] The cylinder block and cylinder head are sealed together by a gasket. If the coolant inside the cylinder block cools it unevenly, some areas will overheat, causing the gasket to break and coolant to leak from the connection between the cylinder block and cylinder head. Figure 1 As shown, in a conventional cylinder block cooling channel design, the coolant flows in from the side, resulting in uneven coolant flow inside the cylinder block. In some areas, the coolant flow is relatively low, which prevents the cylinder block temperature in those areas from decreasing, ultimately causing the corresponding gasket to overheat and fail. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the purpose of this utility model is to provide a water-cooled cylinder structure that can balance the flow of coolant in the cylinder, so that the overall heat dissipation of the cylinder is uniform and avoids excessive temperature in some areas, which may cause the sealing gasket to fail and thus cause coolant leakage.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A water-cooled cylinder block structure, comprising:

[0007] The cylinder body has a hollow tubular water channel inside; the lower end of the tubular water channel is closed and the upper end is provided with a water outlet; the side of the cylinder body is provided with a water inlet; the tail end of the water inlet is connected to the inside of the tubular water channel; the axis of the water inlet is perpendicular to the axis of the tubular water channel.

[0008] The water distributor is installed on the inner wall of the inner ring of the tubular water channel, directly opposite the water inlet; the coolant entering the tubular water channel from the water inlet is diverted by the water distributor, and the coolant flowing out from the tail end of the water inlet flows into the tubular water channel along both sides of the water distributor after being diverted by the water distributor.

[0009] A water divider plate is horizontally installed inside a tubular water channel, with its surface perpendicular to the axis of the tubular water channel. The water divider plate is located above the water divider nozzle. The water divider plate partially divides the tubular water channel and is symmetrically arranged along the axis of the water inlet. The water divider plate is provided with several through holes, all of which are symmetrically arranged along the axis of the water inlet.

[0010] Furthermore, the outer ring of the tubular water channel is connected to the tail end of the inlet through a guide hole; the guide hole is directly opposite the water distributor; the guide hole is funnel-shaped; the inner diameter of the guide hole increases as it moves away from the tail end of the inlet; the guide hole smoothly transitions to the outer ring of the tubular water channel.

[0011] Furthermore, the maximum inner diameter of the guide hole is 1.5-2 times the inner diameter of the tail end of the inlet;

[0012] The cross-section of the water divider is triangular; the two sides of the water divider are smoothly transitioned; the maximum distance between the middle of the side of the water divider and the inner wall of the guide hole is 1-1.5 times the thickness of the tubular water channel; the height of the tip of the water divider is 0.8-1 times the thickness of the tubular water channel; the included angle between the two sides of the water divider is 75°-110°.

[0013] Furthermore, the lower surface of the water distribution plate is flush with the end of the guide hole; the lower end surface of the tubular water channel is flush with the end of the guide hole; the upper end surface of the water distribution nozzle is flush with the lower surface of the water distribution plate; and the lower end surface of the water distribution nozzle is flush with the lower end surface of the tubular water channel.

[0014] Furthermore, the cross-sectional area of ​​the tubular waterway shielded by the water-dividing plate is 0.25-0.5 times the cross-sectional area of ​​the tubular waterway; the thickness of the water-dividing plate is 0.2-0.3 times the wall thickness of the tubular waterway.

[0015] Furthermore, there are seven water outlets, namely the first water outlet, the second water outlet, the third water outlet, the fourth water outlet, the fifth water outlet, the sixth water outlet, and the seventh water outlet; the first water outlet and the seventh water outlet are mirror images of each other along the plane containing the axis of the inlet and the axis of the tubular water channel; the second water outlet and the sixth water outlet are mirror images of each other along the plane containing the axis of the inlet and the axis of the tubular water channel; the third water outlet and the fifth water outlet are mirror images of each other along the plane containing the axis of the inlet and the axis of the tubular water channel; the fourth water outlet is mirror images of each other along the plane containing the axis of the inlet and the axis of the tubular water channel.

[0016] Furthermore, the first and seventh water outlets are directly opposite the water distribution plate along the axial direction of the tubular waterway; the second and sixth water outlets are partially directly opposite the water distribution plate along the axial direction of the tubular waterway; and the third, fifth, and seventh water outlets are partially offset from the water distribution plate along the axial direction of the tubular waterway.

[0017] The cross-section of the first outlet is larger than the cross-section of the second outlet; the cross-section of the second outlet is larger than the cross-section of the third outlet; and the cross-section of the third outlet is larger than the cross-section of the fourth outlet.

[0018] Furthermore, the water distribution plate is provided with two through holes, which are located directly below the first water outlet and the seventh water outlet, respectively; the axis of the through hole directly opposite the first water outlet is collinear with the axis of the first water outlet; the cross-section of the through hole is smaller than the cross-section of the first water outlet.

[0019] The second outlet has 15%-35% of its cross-section along the axial direction of the tubular waterway blocked by the water distribution plate.

[0020] Furthermore, the tubular water channel is provided with a flow-gathering protrusion; the flow-gathering protrusion is directly opposite the water inlet and is arranged opposite the axis of the tubular water channel to the water distributor; the flow-gathering protrusion guides the coolant flowing into the tubular water channel from both sides of the water distributor to flow smoothly and converge.

[0021] The flow-gathering protrusion is located directly below the fourth outlet along the axial direction of the tubular waterway.

[0022] Furthermore, the current-converging protrusion includes:

[0023] A thick-walled body, shaped like a tile, is installed on the inner wall of the outer ring of the tubular waterway; the height of the thick-walled body is the same as the height of the tubular waterway.

[0024] The guide section, with a convex outer contour, is located inside the tubular waterway, between the outer side of the thick-walled body and the inner wall of the inner ring of the tubular waterway; the side of the guide section and the lower end face of the tubular waterway are smoothly transitioned; the surface of the guide section is smoothly transitioned.

[0025] The height of the guide section does not exceed the lower surface of the water distribution plate; the thickness of the guide section is 0.4-0.6 times the wall thickness of the tubular waterway.

[0026] Due to the adoption of the above technical solution, this utility model has the following advantages:

[0027] 1. The axis of the coolant inlet is perpendicular to the axis of the tubular water channel, so that the coolant entering the tubular water channel can flow relatively evenly through the cylinder block. At the same time, under the action of the water distributor, the coolant can be guided more evenly and smoothly.

[0028] 2. The water distribution plate ensures that the coolant flow rate is relatively uniform in each area of ​​the tubular water channel, while the through holes on the water distribution plate prevent insufficient coolant flow in the tubular water channel above the water distribution plate.

[0029] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0030] The accompanying drawings of this utility model are described below:

[0031] Figure 1 This is a schematic diagram showing the flow direction of coolant inside a conventional cylinder block;

[0032] Figure 2 This is a front view schematic diagram of the water-cooled cylinder block structure in the embodiment;

[0033] Figure 3 This is a top view of the water-cooled cylinder block structure in the embodiment;

[0034] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;

[0035] Figure 5 for Figure 3 Schematic diagram of the structure at the BB section;

[0036] Figure 6 for Figure 5 Enlarged structural diagram at point C;

[0037] Figure 7 for Figure 5 Schematic diagram of the structure at the DD section;

[0038] Figure 8 for Figure 7 Enlarged structural diagram at point E;

[0039] Figure 9 for Figure 5 Schematic diagram of the structure at the FF section;

[0040] Figure 10 for Figure 9 Enlarged structural diagram at point G;

[0041] Figure 11 for Figure 5 Schematic diagram of the structure at the HH section;

[0042] Figure 12 for Figure 11 Enlarged structural diagram at point J.

[0043] In the diagram: 1. Cylinder block; 11. Tubular water channel; 121. First outlet; 122. Second outlet; 123. Third outlet; 124. Fourth outlet; 125. Fifth outlet; 126. Sixth outlet; 127. Seventh outlet; 13. Inlet; 2. Divider nozzle; 3. Divider plate; 31. Through hole; 4. Guide hole; 51. Thick-walled body; 52. Guide body. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0045] Example:

[0046] like Figures 1 to 12 As shown, a water-cooled cylinder block 1 structure includes:

[0047] The cylinder body 1 has a hollow tubular water channel 11 inside; the lower end of the tubular water channel 11 is closed and the upper end is provided with a water outlet; the side of the cylinder body 1 is provided with a water inlet 13; the tail end of the water inlet 13 is connected to the inside of the tubular water channel 11; the axis of the water inlet 13 is perpendicular to the axis of the tubular water channel 11.

[0048] The water distributor 2 is installed on the inner wall of the inner ring of the tubular water channel 11, directly opposite the water inlet 13. The coolant entering the tubular water channel 11 through the water inlet 13 is diverted by the water distributor 2. The coolant flowing out from the tail end of the water inlet 13 flows into the tubular water channel 11 along both sides of the water distributor 2 after being diverted by the water distributor 2.

[0049] A water divider plate 3 is horizontally arranged inside the tubular water channel 11, with its surface perpendicular to the axis of the tubular water channel 11. The water divider plate 3 is located above the water divider nozzle 2. The water divider plate 3 partially divides the tubular water channel 11 and is symmetrically arranged along the axis of the inlet 13. The water divider plate 3 is provided with several through holes 31, all of which are symmetrically arranged along the axis of the inlet 13.

[0050] The axis of the coolant inlet 13 is perpendicular to the axis of the tubular water channel 11, allowing the coolant entering the tubular water channel 11 to flow relatively evenly through the cylinder block 1. Simultaneously, the coolant is guided more evenly and smoothly by the distributor 2. The distributor plate 3 ensures that the coolant flow rate through each area of ​​the tubular water channel 11 is relatively uniform, while the through-holes 31 on the distributor plate 3 prevent insufficient coolant flow in the tubular water channel 11 above the distributor plate 3.

[0051] In this embodiment, the outer ring of the tubular waterway 11 is connected to the tail end of the inlet 13 through a guide hole 4; the guide hole 4 is directly opposite the water distributor 2; the guide hole 4 is funnel-shaped; the inner diameter of the guide hole 4 increases as it moves away from the tail end of the inlet 13; the guide hole 4 and the outer ring of the tubular waterway 11 are smoothly transitioned.

[0052] The guide hole 4 reduces turbulence in the coolant entering the tubular water channel 11, allowing it to flow into the tubular water channel 11 more smoothly and evenly.

[0053] In this embodiment, the maximum inner diameter (a) of the guide hole 4 is 1.5-2 times the inner diameter (b) of the tail end of the inlet 13;

[0054] The cross-section of the water divider 2 is triangular; the two sides of the water divider 2 are smoothly transitioned; the maximum distance (c) between the middle of the side of the water divider 2 and the inner wall of the guide hole 4 is 1-1.5 times the thickness (d) of the tubular water channel 11, and 1 times is selected in this embodiment; the tip height (e) of the water divider 2 is 0.8-1 times the thickness (d) of the tubular water channel 11, and 0.9 times is selected in this embodiment; the included angle (f) between the two sides of the water divider 2 is 75°-110°, and 90° is selected in this embodiment.

[0055] In this embodiment, the design of the relationship between the size of the water distributor 2 and the wall thickness of the tubular water channel 11 makes the water distributor 2 more effective in diverting the coolant.

[0056] In this embodiment, the lower surface of the water distribution plate 3 is flush with the end of the guide hole 4; the lower end surface of the tubular water channel 11 is flush with the end of the guide hole 4; the upper end surface of the water distribution nozzle 2 is flush with the lower surface of the water distribution plate 3; and the lower end surface of the water distribution nozzle 2 is flush with the lower end surface of the tubular water channel 11.

[0057] In this embodiment, the cross-sectional area of ​​the tubular waterway 11 shielded by the water-dividing plate 3 is 0.25-0.5 times the cross-sectional area of ​​the tubular waterway 11, and 0.4 times is selected in this example; the thickness (g) of the water-dividing plate 3 is 0.2-0.3 times the wall thickness (d) of the tubular waterway 11, and 0.27 times is selected in this embodiment.

[0058] The specific design of the water distribution plate 3 allows the coolant to flow and contact fully with each area of ​​the tubular water channel 11, carrying away the heat from the inner wall of the inner ring of the tubular water channel 11 and preventing the formation of high-temperature zones in the tubular water channel 11.

[0059] In this embodiment, there are seven water outlets, namely, the first water outlet 121, the second water outlet 122, the third water outlet 123, the fourth water outlet 124, the fifth water outlet 125, the sixth water outlet 126, and the seventh water outlet 127. The first water outlet 121 and the seventh water outlet 127 are mirror images of each other along the plane containing the axis of the inlet 13 and the axis of the tubular water channel 11. The second water outlet 122 and the sixth water outlet 126 are mirror images of each other along the plane containing the axis of the inlet 13 and the axis of the tubular water channel 11. The third water outlet 123 and the fifth water outlet 125 are mirror images of each other along the plane containing the axis of the inlet 13 and the axis of the tubular water channel 11. The fourth water outlet 124 is mirror images of each other along the plane containing the axis of the inlet 13 and the axis of the tubular water channel 11.

[0060] The seven outlets can guide the flow of coolant in the tubular water channel 11, ensuring that the coolant can fully and evenly cool the inner ring wall of the tubular water channel 11.

[0061] In this embodiment, the first water outlet 121 and the seventh water outlet 127 are directly opposite the water distribution plate 3 along the axial direction of the tubular water channel 11; the second water outlet 122 and the sixth water outlet 126 are partially directly opposite the water distribution plate 3 along the axial direction of the tubular water channel 11; the third water outlet 123, the fifth water outlet 125 and the seventh water outlet 127 are partially offset from the water distribution plate 3 along the axial direction of the tubular water channel 11.

[0062] The cross-section of the first outlet 121 is larger than the cross-section of the second outlet 122; the cross-section of the second outlet 122 is larger than the cross-section of the third outlet 123; and the cross-section of the third outlet 123 is larger than the cross-section of the fourth outlet 124.

[0063] In this embodiment, the water distribution plate 3 is provided with two through holes 31, which are located directly below the first water outlet 121 and the seventh water outlet 127, respectively; the axis of the through hole 31 directly opposite the first water outlet is collinear with the axis of the first water outlet; the cross-section of the through hole 31 is smaller than the cross-section of the first water outlet.

[0064] The second outlet 122 has 15%-35% of its cross-section along the axial direction of the tubular waterway 11 blocked by the water distribution plate 3. In this embodiment, 20% is selected.

[0065] In this embodiment, the tubular water channel 11 is provided with a flow-gathering protrusion; the flow-gathering protrusion is directly opposite the water inlet 13 and is arranged opposite the axis of the tubular water channel 11 to the water distributor 2; the flow-gathering protrusion guides the coolant flowing into the tubular water channel 11 from both sides of the water distributor 2 to flow smoothly and converge.

[0066] The flow-gathering protrusion is located directly below the fourth outlet 124 along the axial direction of the tubular waterway 11.

[0067] In this embodiment, the current-gathering protrusion includes:

[0068] A thick-walled body 51, in the shape of a tile, is disposed on the inner wall of the outer ring of the tubular waterway 11; the height of the thick-walled body 51 is the same as the height of the tubular waterway 11.

[0069] The guide portion, with an outer contour in the shape of a convex character, is disposed inside the tubular waterway 11, located between the outer side of the thick-walled body 51 and the inner wall of the inner ring of the tubular waterway 11; the side of the guide portion and the lower end face of the tubular waterway 11 are smoothly transitioned; the surface of the guide portion is smoothly transitioned.

[0070] The height of the guide section does not exceed the lower surface of the water distribution plate 3; the thickness (h) of the guide section is 0.4-0.6 times the wall thickness (d) of the tubular waterway 11, and 0.5 times is selected in this embodiment.

[0071] By setting up flow-concentrating protrusions, the coolant flowing along both sides of the tubular water channel 11 can be prevented from impacting each other at that point, forming turbulence, and creating reverse resistance to the coolant flowing normally along the tubular water channel 11.

[0072] Specifically, by increasing the thick-walled body 51 to reduce the space at that location, the coolant flow rate is forced to decrease, providing a certain reverse resistance to the coolant, which forces the coolant to flow upward; at the same time, the guide part can guide the flow direction of the coolant, causing it to flow upward.

[0073] In this embodiment, the water-cooled cylinder block 1 is structured as follows during cooling: the coolant enters the guide hole 4 through the inlet 13, impacts the water distributor 2, and is divided into two streams. Under the action of the water distributor 3, the coolant flows along the tubular water channels 11 on both sides of the water distributor 2. During this process, part of the coolant flows through the through hole 31 into the tubular water channel 11 above the water distributor 3 under pressure, while the rest continues to flow along the lower surface of the water distributor 3 into the tubular water channel 11 until it flows out of the water distributor 3. After this part of the coolant is no longer restricted by the water distributor 3, it flows upward, while the remaining part continues to flow along the tubular water channel 11 under the inertia of the flow until it encounters the thick-walled body 51 and is forced to compress. After encountering the guide body 52, it is forced to change direction.

[0074] During the process described above, the coolant generally flows upwards, eventually meeting the outlet, flowing through the outlet into the cylinder head, and finally flowing out of the cylinder head to form a circulation.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A water-cooled cylinder block structure characterized by comprising: include: The cylinder body has a hollow tubular water channel inside; the lower end of the tubular water channel is closed and the upper end is provided with a water outlet; the side of the cylinder body is provided with a water inlet; the tail end of the water inlet is connected to the inside of the tubular water channel; the axis of the water inlet is perpendicular to the axis of the tubular water channel. The water distributor is installed on the inner wall of the inner ring of the tubular water channel, directly opposite the water inlet; the coolant entering the tubular water channel from the water inlet is diverted by the water distributor, and the coolant flowing out from the tail end of the water inlet flows into the tubular water channel along both sides of the water distributor after being diverted by the water distributor. A water divider plate is horizontally installed inside a tubular water channel, with its surface perpendicular to the axis of the tubular water channel. The water divider plate is located above the water divider nozzle. The water divider plate partially divides the tubular water channel and is symmetrically arranged along the axis of the water inlet. The water divider plate is provided with several through holes, all of which are symmetrically arranged along the axis of the water inlet.

2. The water-cooled cylinder block structure according to claim 1, characterized by The outer ring of the tubular waterway is connected to the tail end of the inlet through a guide hole; the guide hole is directly opposite the water distributor; the guide hole is funnel-shaped; the inner diameter of the guide hole increases as it moves away from the tail end of the inlet; the guide hole and the outer ring of the tubular waterway transition smoothly.

3. The water-cooled cylinder block structure according to claim 2, characterized by The maximum inner diameter of the guide hole is 1.5-2 times the inner diameter of the tail end of the inlet; The cross-section of the water divider is triangular; the two sides of the water divider are smoothly transitioned; the maximum distance between the middle of the side of the water divider and the inner wall of the guide hole is 1-1.5 times the thickness of the tubular water channel; the height of the tip of the water divider is 0.8-1 times the thickness of the tubular water channel; the included angle between the two sides of the water divider is 75°-110°.

4. The water-cooled cylinder block structure according to claim 2, characterized by The lower surface of the water distribution plate is flush with the end of the guide hole; the lower end surface of the tubular water channel is flush with the end of the guide hole; the upper end surface of the water distribution nozzle is flush with the lower surface of the water distribution plate; and the lower end surface of the water distribution nozzle is flush with the lower end surface of the tubular water channel.

5. The water-cooled cylinder block structure according to claim 1, characterized by The cross-sectional area of ​​the tubular waterway shielded by the water divider plate is 0.25-0.5 times the cross-sectional area of ​​the tubular waterway; the thickness of the water divider plate is 0.2-0.3 times the wall thickness of the tubular waterway.

6. The water-cooled cylinder block structure according to claim 1, characterized by There are seven water outlets, namely the first outlet, the second outlet, the third outlet, the fourth outlet, the fifth outlet, the sixth outlet, and the seventh outlet. The first outlet and the seventh outlet are mirror images of each other along the plane containing the axis of the inlet and the axis of the tubular water channel. The second outlet and the sixth outlet are mirror images of each other along the plane containing the axis of the inlet and the axis of the tubular water channel. The third outlet and the fifth outlet are mirror images of each other along the plane containing the axis of the inlet and the axis of the tubular water channel. The fourth outlet is mirror images of each other along the plane containing the axis of the inlet and the axis of the tubular water channel.

7. The water-cooled cylinder block structure according to claim 6, characterized by The first and seventh water outlets are directly opposite the water distribution plate along the axial direction of the tubular waterway; the second and sixth water outlets are partially directly opposite the water distribution plate along the axial direction of the tubular waterway; the third, fifth, and seventh water outlets are partially offset from the water distribution plate along the axial direction of the tubular waterway. The cross-section of the first outlet is larger than the cross-section of the second outlet; the cross-section of the second outlet is larger than the cross-section of the third outlet; and the cross-section of the third outlet is larger than the cross-section of the fourth outlet.

8. The water-cooled cylinder block structure according to claim 6, characterized in that, The water distribution plate is provided with two through holes, which are located directly below the first water outlet and the seventh water outlet, respectively; the axis of the through hole directly opposite the first water outlet is collinear with the axis of the first water outlet; the cross-section of the through hole is smaller than the cross-section of the first water outlet. The second outlet has 15%-35% of its cross-section along the axial direction of the tubular waterway blocked by the water distribution plate.

9. The water-cooled cylinder block structure according to any one of claims 6 to 8, characterized by The tubular water channel is provided with a flow-gathering protrusion; the flow-gathering protrusion is directly opposite the water inlet and is set opposite to the axis of the tubular water channel to the water distributor; the flow-gathering protrusion guides the coolant flowing into the tubular water channel from both sides of the water distributor to flow smoothly and converge. The flow-gathering protrusion is located directly below the fourth outlet along the axial direction of the tubular waterway.

10. The water-cooled cylinder block structure according to claim 9, characterized by The current-gathering protrusion includes: A thick-walled body, shaped like a tile, is installed on the inner wall of the outer ring of the tubular waterway; the height of the thick-walled body is the same as the height of the tubular waterway. The guide section, with a convex outer contour, is located inside the tubular waterway, between the outer side of the thick-walled body and the inner wall of the inner ring of the tubular waterway; the side of the guide section and the lower end face of the tubular waterway are smoothly transitioned; the surface of the guide section is smoothly transitioned. The height of the guide section does not exceed the lower surface of the water distribution plate; the thickness of the guide section is 0.4-0.6 times the wall thickness of the tubular waterway.

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