A water outlet with baffle for EGR cooler

Abstract

The present invention provides a water outlet with a baffle for an EGR cooler, comprising a water outlet joint and a baffle, wherein one end of the water outlet joint is integrally provided with an expansion notch, and the top of the expansion notch is provided with a baffle; the expansion notch comprises a notch-shaped connecting pipe, a water flow guide plate and a limit plate, the end of the connecting pipe away from the water outlet joint is provided with a water flow guide plate, and the top of the water flow guide plate is provided with a limit plate facing the water flow direction; the top of the limit plate is fixed with a baffle. The present invention designs a baffle structure at the water outlet to change the flow direction of the water body, thereby avoiding boiling inside the cooler to achieve the effect of improving the performance and reliability of the cooler.

Description

Technical Field

[0001] The invention mainly relates to the field of gasoline and diesel vehicle coolers, and in particular to a water outlet with a partition for an EGR cooler. Background Art

[0002] At present, the water circuit structure of the EGR cooler of domestic gasoline and diesel engines is relatively simple, and is generally a straight-in and straight-out structure. This structure is simple and effective, and can significantly reduce the water side resistance while achieving the cooling effect of the cooler.

[0003] However, when actually used in engines with large cylinder diameters and high power, EGR coolers of this structure often experience body cracking and coolant leakage, thereby causing a series of engine failures.

[0004] The Chinese invention patent has been published, application number CN201210506551.6, patent name: hydraulic cooler, application date: 2012-11-30, the present invention relates to a hydraulic cooler, including a bracket, a shell on the bracket, and a cooling pipe connected to the shell, characterized in that: the shell has an oil inlet, an oil outlet, a water inlet and a water outlet, a water baffle fixedly connected to the inner wall of the shell is arranged between the water inlet and the water outlet, the cooling pipe is horizontally connected to the inner wall of the shell, and the inner wall of the shell is longitudinally fixedly connected to the baffle. The present invention has a simple structure and has the advantages of good cooling effect and high heat transfer efficiency compared with traditional hydraulic oil-water coolers. Summary of the invention

[0005] The investigation found that the heat exchange rate of the water-gas channel inside the EGR cooler did not reach the ideal state, the water side inside the cooler boiled severely, and local dry burning occurred, causing the cooler to fail. In order to overcome the above problems, this patent designs a baffle structure at the water outlet to change the flow direction of the water body, thereby avoiding boiling inside the cooler to improve the performance and reliability of the cooler. In view of the above-mentioned defects of the prior art, the present invention provides a water outlet with a baffle for an EGR cooler, including a water outlet joint 1 and a baffle 2, one end of the water outlet joint 1 is integrally provided with an expansion notch 3, and the top of the expansion notch 3 is provided with a baffle 2;

[0006] The expansion notch 3 includes a notch-shaped connecting pipe 4, a water flow guide plate 5 and a limit plate 6. The end of the connecting pipe 4 away from the water outlet joint 1 is provided with a water flow guide plate 5, and the top of the water flow guide plate 5 is provided with a limit plate 6 facing the water flow direction.

[0007] A water-blocking plate 2 is fixed on the top of the limiting plate 6 .

[0008] Preferably, the expansion notch 3 and the watertight plate 2 are fixed by spot welding.

[0009] Preferably, the limiting plate 6 is arc-shaped, and two opposite sides of the limiting plate 6 are arc-shaped retaining edges 7 .

[0010] Preferably, the length of the arc-shaped rib 7 is not less than half the length of the short side of the water flow guide plate 5 .

[0011] Preferably, a through hole 8 is provided on the water flow guide plate 5 , and the through hole 8 is connected to the water inlet of the connecting pipe 4 and is integrally provided.

[0012] Preferably, the water-blocking plate 2 is in a "convex" shape, and includes a first horizontal end 21 and a second horizontal end 22, wherein the first horizontal end 21 is located above the through hole 8, and the long side dimension of the second horizontal end 22 is the same as the long side dimension of the limiting plate 6.

[0013] Preferably, arc-shaped ports 9 are provided on both short sides of the second horizontal end 22 .

[0014] The beneficial effects of the present invention are as follows: a water baffle structure is designed at the water outlet to change the flow direction of the water body, thereby avoiding boiling inside the cooler and achieving the effect of improving the performance and reliability of the cooler. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the present invention;

[0016] Figure 2 It is a structural diagram of the water outlet joint and the expansion notch in the present invention;

[0017] Figure 3 It is a structural diagram of a water-blocking plate in the present invention;

[0018] Figure 4 It is a structural diagram of the prior art;

[0019] In the figure,

[0020] 1. Water outlet joint; 2. Water baffle, 21. First horizontal end, 22. Second horizontal end; 3. Expansion notch; 4. Connecting pipe; 5. Water flow guide plate; 6. Limiting plate; 7. Arc-shaped retaining edge; 8. Through hole; 9. Arc-shaped port. DETAILED DESCRIPTION

[0021] In order to make the technical solution of the present invention better understood by the technical personnel in the field, and to make the above-mentioned features, purposes and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with the embodiments. The embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0022] like Figure 1-4As shown, the present invention includes: a water outlet joint 1 and a water baffle 2, one end of the water outlet joint 1 is integrally provided with an expansion notch 3, and the top of the expansion notch 3 is provided with a water baffle 2;

[0023] The expansion notch 3 includes a notch-shaped connecting pipe 4, a water flow guide plate 5 and a limit plate 6. The end of the connecting pipe 4 away from the water outlet joint 1 is provided with a water flow guide plate 5, and the top of the water flow guide plate 5 is provided with a limit plate 6 facing the water flow direction.

[0024] A water-blocking plate 2 is fixed on the top of the limiting plate 6 .

[0025] During use, the internal structure of the cooler does not need to be significantly changed, and the purpose can be achieved by simply changing the joint structure of the water outlet. This patent improves the water outlet structure of the existing EGR cooler and adds a water baffle to improve the performance and reliability of the cooler, which not only meets the performance requirements of the engine, but also greatly reduces the cost of transformation, thereby improving product competitiveness; this structure is not only easy to form, but also has stable quality; it is easy to use in production and reduces the loss of manpower hours.

[0026] In this embodiment, preferably, the expansion notch 3 and the watertight plate 2 are fixed by spot welding.

[0027] The above structure is set up, and the expansion notch 3 and the water-blocking plate 2 are fixed together by spot welding to ensure that they will not be loose and avoid breakage under the impact of water flow.

[0028] In this embodiment, the limiting plate 6 is preferably arc-shaped, and two opposite sides of the limiting plate 6 are arc-shaped retaining edges 7 .

[0029] In this embodiment, preferably, the length of the arc-shaped retaining edge 7 is not less than half the length of the short side of the water flow guide plate 5 .

[0030] With the above structure, since there are arcuate ribs 7 on both sides of the limit plate 6 and the length of the arcuate ribs 7 is not shorter than half the length of the water flow guide plate 5, it can effectively guide, collect and merge the water flow.

[0031] In this embodiment, preferably, a through hole 8 is provided on the water flow guide plate 5 , and the through hole 8 is connected to the water inlet of the connecting pipe 4 and is integrally provided.

[0032] With the above structure, since the through hole 8 is integrally connected to the water inlet of the connecting pipe 4, it can be ensured that water can directly enter the connecting pipe 4 under the action of the limiting plate 6, and the water flow is smooth without overflow.

[0033] In the present embodiment, the water-blocking plate 2 is preferably in a "convex" shape, and the water-blocking plate 2 includes a first horizontal end 21 and a second horizontal end 22, wherein the first horizontal end 21 is located above the through hole 8, and the long side dimension of the second horizontal end 22 is the same as the long side dimension of the limiting plate 6.

[0034] By setting the above structure, the first horizontal end 21 is located above the through hole 8, which can effectively avoid the water flow from hitting the water baffle 2 and prevent the water flow from splashing out.

[0035] Preferably in this embodiment, arc-shaped ports 9 are provided on both short sides of the second horizontal end 22 .

[0036] The above structure is arranged to facilitate taking the whole device by utilizing the arc-shaped port 9, thus achieving the effect of facilitating use.

[0037] The above embodiments are merely illustrative of the principles and effects of this patent application, and are not intended to limit this patent application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of this patent application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in this patent application should still be covered by the claims of this patent application.

Claims

1. A water outlet with a baffle for an EGR cooler, characterized in that: The invention comprises a water outlet joint (1) and a water baffle (2); one end of the water outlet joint (1) is integrally provided with an expansion notch (3), and the top of the expansion notch (3) is provided with a water baffle (2); the expansion notch (3) comprises a notch-shaped connecting pipe (4), a water flow guide plate (5) and a limit plate (6); one end of the connecting pipe (4) away from the water outlet joint (1) is provided with a water flow guide plate (5), and the top of the water flow guide plate (5) is provided with a limit plate (6) facing the water flow direction; A water-blocking plate (2) is fixed on the top of the limiting plate (6); The expansion notch (3) and the water barrier (2) are fixed by spot welding; The limiting plate (6) is arc-shaped, and two opposite sides of the limiting plate (6) are arc-shaped retaining edges (7); the length of the arc-shaped retaining edges (7) is not less than half the length of the short side of the water flow guide plate (5); The water flow guide plate (5) is provided with a through hole (8), and the through hole (8) is connected to the water inlet of the connecting pipe (4) and is integrally provided; The water barrier (2) is in a "convex" shape, and comprises a first horizontal end (21) and a second horizontal end (22), wherein the first horizontal end (21) is located above the through hole (8), and the long side dimension of the second horizontal end (22) is the same as the long side dimension of the limiting plate (6); Arc-shaped ports (9) are provided on both short sides of the second horizontal end (22).

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