Intercooler rear accelerated condensation structure, intercooler and vehicle

Abstract

The utility model relates to the technical field of engine air inlet, in particular to an intercooler rear accelerated condensation structure, an intercooler and a vehicle. The condensation structure comprises a plurality of stand columns, the stand columns are sequentially arranged in the direction perpendicular to air flow of the air inlet cavity, a set distance is formed between every two adjacent stand columns in the direction perpendicular to the air flow, each stand column is of a spindle structure, and the cross section of each spindle structure is gradually widened and then gradually decreased in the air flow direction. And the cross section of the spindle body structure is gradually reduced from top to bottom. The condensation structure can accelerate condensation of intercooled condensate water on the premise of reducing air inlet resistance, so that the combustion stability and reliability of an engine are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engine intake, in particular to an after-cooler acceleration condensation structure, an after-cooler and a vehicle. Background Art

[0002] In a high-temperature and high-humidity environment, a large amount of condensed water will be generated after engine supercharging and after-cooling. The condensed water in the after-cooler staying in the intake cavity will affect the reliability of the engine. Especially for a large-bore engine with a large intake air flow and a high supercharging pressure ratio, the water vapor after phase conversion enters the combustion chamber along with the high-speed air flow due to the lack of attachment and condensation conditions. As the amount of condensed water entering the combustion chamber increases, the combustion quality decreases, especially for gaseous fuels such as natural gas engines, which are greatly affected by the water vapor in the combustion chamber. In addition, there is also a risk of rapid cooling and cracking of the intake valve due to water entering the cylinder.

[0003] The traditional condensation structure uses multiple staggered baffles to form a curved flow channel to separate condensed water. However, this structure has the following problems:

[0004] 1. Accelerating the condensation of condensed water by sacrificing the intake resistance is not conducive to improving the engine power density. The liquid water particles after supercharging and after-cooling impact on the water droplet attachment surface along with the high-speed air flow. The liquid water particles achieve condensation, but a large amount of energy is consumed in the air flow direction.

[0005] 2. The water vapor in the air precipitates until the air is saturated and then no longer precipitates. It may precipitate into condensed water again due to boundary changes in the subsequent intake duct. Summary of the Utility Model

[0006] Aiming at the deficiencies of the existing technology, the purpose of the embodiment of the utility model is to provide an after-cooler acceleration condensation structure, which can accelerate the condensation of condensed water after after-cooling on the premise of reducing the intake resistance, thereby improving the combustion stability and reliability of the engine.

[0007] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0008] An after-cooler acceleration condensation structure, the after-cooler has an intake cavity, and the condensation structure is arranged in the intake cavity; the condensation structure includes a plurality of columns, the columns are arranged in sequence along a direction perpendicular to the air flow in the intake cavity, and there is a set distance between two adjacent columns in the direction perpendicular to the air flow. The column is a spindle structure, and the cross-section of the spindle structure gradually becomes wider and then gradually becomes smaller along the air flow direction, and the cross-section of the spindle structure gradually becomes smaller along the direction from top to bottom.

[0009] Optionally, the cross-section of the spindle structure is an axisymmetric shape, and the axis of symmetry of the cross-section is parallel to the air flow direction.

[0010] Optionally, the outer facade of the spindle structure includes an arc surface and an inclined surface. The arc surface is located on the air inlet side of the spindle structure, and the inclined surfaces are located on both sides of the arc surface. The air inlet ends of the two inclined surfaces are tangent to the arc surface, and the air outlet ends of the two inclined surfaces intersect at a straight line after being bent by an arc.

[0011] Optionally, a water guide groove is provided at the rear side of the spindle structure along the air flow direction. The water guide groove is arranged perpendicular to the air flow direction, and the water guide groove is a downward concave structure.

[0012] Optionally, one end of the water guide groove in the length direction is open and the other end is closed, and the bottom of the open end of the water guide groove is lower than the bottom of the closed end.

[0013] The embodiment of the present invention also provides an intercooler, which has an air inlet cavity, and the above-mentioned post-acceleration condensation structure of the intercooler is arranged in the air inlet cavity.

[0014] Optionally, the intercooler has a frame structure. An air inlet cavity is formed within the frame structure. The air inlet cavity has an air inlet side and an air outlet side, and the spindle structure is located on one side of the air outlet side.

[0015] Optionally, the frame structure includes a top plate and a bottom plate. The bottom of the spindle structure is mounted on the bottom plate, and the top of the spindle structure is connected to the top plate.

[0016] Optionally, the bottom of the spindle structure is welded to the bottom plate, and the top of the spindle structure is welded to the top plate.

[0017] The embodiment of the present invention also provides a vehicle, including the above-mentioned intercooler.

[0018] One or more technical solutions provided in the embodiment of the present invention have at least the following technical effects or advantages:

[0019] The condensation structure includes a plurality of upright columns arranged in the intake cavity. These upright columns are arranged in sequence along the direction perpendicular to the airflow in the intake cavity, and there is a set distance between adjacent two upright columns in the direction perpendicular to the airflow. The cross-section of each spindle structure gradually widens first and then gradually narrows along the airflow direction. During the working process, when the high-speed airflow flows through the gaps between the upright columns, the airflow velocity increases, the air pressure decreases, and the relative humidity of the air increases as the air pressure decreases, so that the water vapor in the air condenses and precipitates as liquid water. The gap first becomes smaller and then larger, and during the process of becoming larger, the gas expands, the temperature decreases, and the solubility of water vapor in the air decreases, alleviating the problem of the re-precipitation of condensed water in the subsequent intake duct. After the liquid water particles condense on the surface of the spindle, due to the action of gravity, they flow downward along the surface of the upright column, thus effectively separating the condensed water from the airflow. Compared with the existing curved flow channel structure formed by baffles, the high-speed airflow flowing through the gaps between the upright columns does not need to change direction, and the intake resistance loss is low. This design optimizes the shape and arrangement of the upright columns, while ensuring low intake resistance, accelerates the formation and separation of condensed water, and significantly improves the combustion stability and reliability of the engine. In addition, the spindle structure is larger at the top and smaller at the bottom, and the airflow velocity is higher at the top and lower at the bottom. After the water particles condense, it is more conducive to flowing downward under the action of gravity and airflow velocity, which is convenient for collection and prevents being blown to the rear under the influence of the airflow.

[0020] Advantages of additional aspects of the present utility model will be given in the following description, some will become obvious from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The schematic diagrams in the specification forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0022] Figure 1 is a three-dimensional schematic diagram of the condensation structure provided by an embodiment of the present utility model arranged in an intercooler;

[0023] Figure 2 is a side schematic diagram of the condensation structure provided by an embodiment of the present utility model arranged in an intercooler;

[0024] Figure 3 is a top view of the spindle structure provided by an embodiment of the present utility model;

[0025] Figure 4 is a three-dimensional diagram of the spindle structure provided by an embodiment of the present utility model;

[0026] Figure 5 is a side view of the spindle structure provided by an embodiment of the present utility model;

[0027] Figure 6It is the front view of the spindle structure provided by the embodiment of the present utility model;

[0028] In the figure: 1. Intake cavity; 11. Intake side; 12. Outlet side; 13. Top plate; 14. Bottom plate; 2. Spindle structure; 21. Arc surface; 22. Inclined surface; 3. Water guide groove;

[0029] The distances or dimensions between each part are exaggerated for showing the positions of each part, and the schematic diagram is only for illustration. Detailed implementation manners

[0030] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further descriptions of the present utility model. Unless otherwise specified, all technical and scientific terms used in the present utility model have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] Term explanation:

[0032] Intercooler condensate: A large amount of water vapor is contained in the engine supercharged air. After passing through the intercooler, the water vapor is converted from a gaseous state to a liquid state, and the condensed liquid water is called intercooler condensate.

[0033] As introduced in the background technology, in the prior art, there are certain limitations in the engine intake system for dealing with condensate. Traditional structures usually accelerate the condensation of condensate by sacrificing the intake resistance, which is not conducive to the improvement of the engine power density. In the airflow after supercharging and intercooling, liquid water particles collide with the water droplet attachment surface along with the high-speed airflow, and although condensation can be achieved, a large amount of energy is consumed at the same time. In addition, the water vapor in the air may re-precipitate to form condensate again in the intake duct due to changes in boundary conditions after reaching saturation. Therefore, the main problems in the prior art include:

[0034] 1. The increase in intake resistance affects the power output and efficiency of the engine.

[0035] 2. The re-precipitation of condensate in the intake duct increases the water vapor content in the combustion chamber and affects the combustion quality.

[0036] In order to solve the above technical problems, this embodiment proposes an intercooler post-acceleration condensation structure, which can accelerate the condensation of condensate after intercooling without increasing the intake resistance, thereby improving the combustion stability and reliability of the engine. Through the innovative "spindle"-shaped columnar structure, the effective condensation and discharge of condensate are realized, and the intake efficiency is maintained at the same time, solving the problems existing in the prior art.

[0037] Such as Figure 1 、Figure 2 As shown, the intercooler has an intake chamber 1, and the condensation structure is arranged in the intake chamber 1; the condensation structure includes a plurality of columns, the columns are arranged in sequence along the direction perpendicular to the air flow in the intake chamber 1, and there is a set distance between two adjacent columns in the direction perpendicular to the air flow. As Figure 3 、 Figure 4 shown, the column is a spindle structure 2, the cross-section of the spindle structure 2 gradually widens first and then gradually narrows along the air flow direction, and the cross-section of the spindle structure 2 gradually narrows along the direction from top to bottom (as Figure 5 、 Figure 6 shown).

[0038] The columns create conditions for water particle attachment and facilitate the condensation of water particles. The material of the columns can be selected as a high-temperature resistant and corrosion-resistant metal material, such as aluminum alloy or stainless steel. The height of the spindle structure 2 should be adjusted according to the height of the intake chamber 1 so that the air flow in the entire intake chamber 1 can pass through the column gaps evenly.

[0039] The condensation structure includes a plurality of columns arranged in the intake chamber 1, these columns are arranged in sequence along the direction perpendicular to the air flow in the intake chamber 1, and there is a set distance between two adjacent columns in the direction perpendicular to the air flow. The cross-section of each spindle structure 2 gradually widens first and then gradually narrows along the air flow direction. During the working process, when the high-speed air flow passes through the column gaps, the air flow velocity increases, the air pressure decreases, and the relative humidity of the air increases as the air pressure decreases, so that the water vapor in the air condenses and precipitates as liquid water. The gap first becomes smaller and then larger, and during the process of becoming larger, the gas expands and the temperature decreases, and the solubility of water vapor in the air decreases, alleviating the problem of the re-precipitation of condensed water in the subsequent intake duct. After the liquid water particles condense on the surface of the spindle, due to the action of gravity, they flow downward along the surface of the column, thus effectively separating the condensed water from the air flow. Compared with the existing curved flow channel structure formed by baffles, the high-speed air flow passing through the column gaps does not need to change direction, and the intake resistance loss is low. This design optimizes the shape and arrangement of the columns, while ensuring low intake resistance, accelerates the formation and separation of condensed water, and significantly improves the combustion stability and reliability of the engine. In addition, the spindle structure 2 is larger at the top and smaller at the bottom, the air flow velocity is higher at the top and lower at the bottom, and after the water particles condense, it is more conducive to flowing downward under the action of gravity and air flow velocity, which is convenient for collection and prevents being blown to the rear under the influence of the air flow.

[0040] The cross-section of the spindle structure 2 is an axisymmetric shape, and the axis of symmetry of the cross-section is parallel to the air flow direction. The axisymmetric cross-section design enables the spindle structure 2 to have good aerodynamic characteristics in the air flow direction, reducing the eddy current and energy loss when the air flow passes through. The air flow smoothly passes through the symmetrically designed spindle columns, reducing the air flow disorder and further improving the condensation effect. The axis of symmetry of the spindle is parallel to the air flow direction, which helps to evenly distribute the air flow and ensure that the state of the air flow is consistent when passing through each column. This makes the condensation effect more uniform and further improves the reliability and combustion efficiency of the engine intake system.

[0041] As Figure 3 shown, the outer facade of the spindle structure 2 includes an arc surface 21 and an inclined surface 22. The arc surface 21 is located on the air intake side of the spindle structure 2, and the inclined surfaces 22 are located on both sides of the arc surface 21. The air intake ends of the two inclined surfaces 22 are tangent to the arc surface 21, and the air outlet ends of the two inclined surfaces 22 intersect at a straight line after being bent by an arc. The design of the arc surface 21 on the air intake side reduces the air flow impact and improves the smoothness of the air flow. The inclined surface 22 design helps the air flow to gradually decelerate and cool when passing through the columns, and at the same time, the condensed water particles formed on the inclined surface 22 are more likely to flow downward along the surface. This structural design not only improves the precipitation and aggregation efficiency of the condensed water, but also reduces the air flow resistance, ensuring the air intake volume and combustion efficiency of the engine.

[0042] A water guide groove 3 is provided at the rear side of the spindle structure 2 along the air flow direction. The water guide groove 3 is arranged perpendicular to the air flow direction, and the water guide groove 3 is a downward concave structure. The depth and width of the water guide groove 3 are designed according to the amount of condensed water to ensure that the condensed water can be effectively received and discharged. After the condensed water particles condense on the column surface, they flow downward along the column and finally enter the water guide groove 3. Through the design of the water guide groove 3, the condensed water can be effectively discharged from the intake system, avoiding the secondary condensation of the condensed water in the intake system.

[0043] One end of the water guide groove 3 is open and the other end is closed along the length direction. The bottom of the open end of the water guide groove 3 is lower than the bottom of the closed end. The design that the bottom of the open end of the water guide groove 3 is lower than the bottom of the closed end enables the condensed water to naturally flow to the open end and be effectively discharged out of the system.

[0044] This condensation structure maximizes the precipitation and condensation of the post-intercooling water vapor in the designated area of the engine intake system from dimensions such as temperature, air pressure, and adhesion conditions, improving the overall reliability and combustion stability of the engine.

[0045] This embodiment also proposes an intercooler. The intercooler has an air intake chamber 1, and the above-mentioned post-intercooling acceleration condensation structure is arranged in the air intake chamber 1. As Figure 1 、 Figure 2As shown, the intercooler has a frame structure. An intake chamber 1 is formed within the frame structure. The intake chamber 1 has an intake side 11 and an outlet side 12. The spindle structure 2 is located on one side of the outlet side 12. The spindle structure 2 is arranged at the outlet side 12, near the outlet, optimizing the drainage path of the condensed water, enabling the air flow to quickly discharge from the intake chamber 1 after condensation.

[0046] The frame structure includes a top plate 13 and a bottom plate 14. The bottom of the spindle structure 2 is mounted on the bottom plate 14, and the top of the spindle structure 2 is connected to the top plate 13. When the air flow enters from the intake port and passes through the spindle structure 2, the water vapor condenses into liquid water and flows downward along the surface of the spindle. The connection of the spindle structure 2 to the bottom plate 14 and the top plate 13 ensures the stability of the spindle structure 2, improves the drainage efficiency of the condensed water, and enhances the overall performance of the intake system.

[0047] In one embodiment, the bottom of the spindle structure 2 is welded to the bottom plate 14, and the top of the spindle structure 2 is welded to the top plate 13. The welding technology is used to connect the bottom of the spindle structure 2 to the bottom plate 14 and the top to the top plate 13 to ensure the stability and durability of the structure. The welding points should be evenly distributed, and the welding strength should meet the requirements under high-temperature and high-pressure environments.

[0048] In another embodiment, a positioning groove is provided on the bottom plate 14. The shape of the positioning groove matches the shape of the bottom of the spindle structure 2, and the spindle structure 2 is inserted into the positioning groove. The positioning groove on the bottom plate 14 ensures that the spindle structure 2 can be accurately positioned during installation, avoiding deviation.

[0049] This embodiment also provides a vehicle, including the intercooler described above. The intercooler is integrated into the engine intake system and is connected to the engine through a pipeline. During vehicle operation, the engine supercharged air enters the intake chamber 1 of the intercooler. Through the condensation effect of the spindle structure 2, the water vapor condenses into liquid water, and the condensed water is discharged along the water guide groove 3. The processed air flow enters the engine from the outlet of the intercooler, improving the combustion efficiency. By integrating the above intercooler on the vehicle, the combustion stability and reliability of the engine are improved. Especially in high-temperature and high-humidity environments, the impact of condensed water on the engine performance is significantly reduced.

[0050] Although the specific implementation manners of the present invention are described above in conjunction with the drawings, it is not a limitation to the protection scope of the present invention. Those skilled in the art should understand that based on the technical solutions of the present invention, various modifications or deformations that do not require creative labor by those skilled in the art are still within the protection scope of the present invention.

Claims

1. An accelerated condensation structure after an intercooler, characterized in that: The intercooler has an air intake cavity, and the condensation structure is arranged in the air intake cavity; The condensation structure includes a plurality of columns, which are arranged in sequence along a direction perpendicular to the air flow in the air inlet cavity, and two adjacent columns have a set distance perpendicular to the air flow direction. The columns are spindle structures, and the cross-section of the spindle structure gradually widens and then gradually decreases along the air flow direction. The cross-section of the spindle structure gradually decreases from top to bottom.

2. The intercooler rear accelerated condensation structure according to claim 1, characterized in that: The cross section of the spindle structure is an axisymmetric shape, and the axis of symmetry of the cross section is parallel to the airflow direction.

3. The intercooler rear accelerated condensation structure according to claim 2, characterized in that: The outer facade of the spindle structure includes an arcuate surface and an inclined surface. The arcuate surface is located on the air inlet side of the spindle structure, and the inclined surfaces are located on both sides of the arcuate surface. The air inlet ends of the two inclined surfaces are tangent to the arcuate surface, and the air outlet ends of the two inclined surfaces are bent into arcs and intersect in a straight line.

4. The intercooler rear accelerated condensation structure according to claim 1, characterized in that: A water guide groove is arranged on the rear side of the spindle structure along the airflow direction. The water guide groove is arranged perpendicular to the airflow direction and is a downward concave structure.

5. The intercooler rear accelerated condensation structure according to claim 4, characterized in that: The water guide groove is open at one end along the length direction and closed at the other end, and the groove bottom of the open end of the water guide groove is lower than the groove bottom of the closed end.

6. An intercooler, characterized in that: The intercooler has an air intake cavity, and the intercooler rear accelerated condensation structure according to any one of claims 1 to 5 is arranged in the air intake cavity.

7. The intercooler according to claim 6, characterized in that: The intercooler has a frame structure, an air intake cavity is formed in the frame structure, the air intake cavity has an air intake side and an air outlet side, and the spindle structure is located on one side of the air outlet side.

8. The intercooler according to claim 7, characterized in that: The frame structure comprises a top plate and a bottom plate, the bottom of the spindle structure is mounted on the bottom plate, and the top of the spindle structure is connected to the top plate.

9. The intercooler according to claim 8, characterized in that The bottom of the spindle structure is connected to the bottom plate by welding, and the top of the spindle structure is connected to the top plate by welding.

10. A vehicle, characterized in that: Comprising an intercooler as described in any one of claims 6-9.

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