CN214997959U

CN214997959U - EGR cooler's end structure of intaking

Info

Publication number: CN214997959U
Application number: CN202121332384.9U
Authority: CN
Inventors: 周莉敏; 聂军初; 王铁兵
Original assignee: Modine Puxin Thermal Systems Jiangsu Co ltd
Current assignee: Modine Puxin Thermal Systems Jiangsu Co ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2021-12-03
Anticipated expiration: 2031-06-15

Abstract

The utility model discloses a water inlet end structure of EGR cooler, including the cooler casing, the top of cooler casing is connected with the inlet tube, the inlet tube contains the slow flow portion, switching-over portion and the delivery port that connect gradually, delivery port and cooler casing intercommunication, the pipe end that is close to of cooler casing is connected with the flange joint, be equipped with inlet end plate between flange joint and the cooler casing, the delivery port is for inclining the decurrent mouth of a river to the inlet end plate direction, switching-over portion is the U-shaped bend. The utility model has the advantages that: the impact of the cooling liquid on the reversing part is effectively slowed down, and the service life of the water inlet pipe is prolonged; can take away the heat on the end plate of admitting air of conducting through the exhaust pipe wall faster, improve the durability of end plate of admitting air, the coolant liquid has better washing distribution and velocity of flow to cooler housing inside, the faster heat on taking away the heat transfer core in the EGR cooler, improve heat dispersion, improve heat transfer core and EGR cooler's life.

Description

EGR cooler's end structure of intaking

Technical Field

The utility model relates to a EGR cooler technical field specifically is a EGR cooler's end structure of intaking.

Background

In order to reduce the content of Nitrogen Oxides (NOX) in the exhaust gases of motor vehicles, it is necessary to return a portion of the exhaust gases to the engine cylinder (i.e. exhaust gas recirculation technology), the exhaust gases having a temperature of up to 800 degrees and having to be cooled down before entering the engine intake system, whereupon an exhaust gas recirculation cooler (EGR cooler) is created. An EGR cooler is a device installed in an EGR system of an automobile for cooling of recirculated exhaust gases, cooling part of the exhaust gases returning to the cylinders of the engine. The inlet tube of the end of intaking of current EGR cooler gets into the cooler casing with being close 90 degrees corners, and its coolant liquid can flow down along the baffle is vertical, can't contact the inlet end plate, causes the heat of inlet end plate department can't be taken away fast to influence the inlet end plate and rather than the durability of the heat transfer core of being connected, lead to the heat transfer core to reach the life of ideal, and then lead to the life of EGR cooler to be short.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a structure is held in intaking of EGR cooler to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a EGR cooler's end structure of intaking, includes the cooler casing, the top of cooler casing is connected with the inlet tube, the inlet tube contains the slow flow portion, switching-over portion and the delivery port that connect gradually, delivery port and cooler casing intercommunication, the pipe end that is close to of cooler casing is connected with the flange and connects, be equipped with inlet end plate between flange joint and the cooler casing, the delivery port is to the decurrent mouth of a river of inlet end plate direction slope, the switching-over portion is the U-shaped bend.

More preferably, the flow slowing portion is an S-shaped curve.

Preferably, the air inlet end plate is provided with a plurality of uniformly arranged air inlets which are communicated with the heat exchange core body in the cooler shell.

Further preferably, a first gasket is arranged between the flange joint and the air inlet end plate, and a second gasket is arranged between the air inlet end plate and the cooler shell.

Further preferably, the side of the flange joint far away from the air inlet end plate is provided with an air inlet, and the air inlet adopts a frustum structural design.

Further preferably, the flange joint, the inlet end plate and the cooler housing are connected by a plurality of bolts.

Has the advantages that: the water inlet end structure of the EGR cooler can effectively slow down the impact of the cooling liquid on the reversing part through the S-shaped flow slowing part, thereby prolonging the service life of the water inlet pipe; the rotary reversing of the cooling liquid is realized through the U-shaped reversing part, and the cooling liquid can be flushed onto the air inlet end plate by matching with the inclined water outlet, so that heat conducted to the air inlet end plate through the wall of the waste gas pipe can be brought away more quickly, the durability of the air inlet end plate is improved, and the service life of the EGR cooler is further prolonged; meanwhile, the cooling liquid has better washing distribution and flow velocity to the inside of the cooler shell, the heat transferred from the heat exchange core in the EGR cooler is taken away more quickly, the heat dissipation performance is improved, and the service lives of the heat exchange core and the EGR cooler are prolonged.

Drawings

Fig. 1 is an exploded schematic view of a water inlet end structure of an EGR cooler according to an embodiment of the present invention;

fig. 2 is a schematic front view of an EGR cooler according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a portion a in fig. 2 according to an embodiment of the present invention;

fig. 4 is a schematic view of an axial measurement structure at a position a in fig. 2 according to an embodiment of the present invention.

Reference numerals: 1-cooler shell, 2-water inlet pipe, 21-flow slowing part, 22-reversing part, 23-water outlet, 3-flange joint, 31-air inlet, 4-air inlet end plate, 5-heat exchange core, 6-first gasket, 7-second gasket and 8-bolt.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-4, a water inlet end structure of an EGR cooler comprises a cooler housing 1, a water inlet pipe 2 is connected above the cooler housing 1, the water inlet pipe 2 comprises a flow slowing portion 21, a reversing portion 22 and a water outlet 23 which are sequentially connected, the water outlet 23 is communicated with the cooler housing 1, a flange joint 3 is connected to the end, close to the water inlet pipe 2, of the cooler housing 1, an air inlet end plate 4 is arranged between the flange joint 3 and the cooler housing 1, the water outlet 23 is a water gap which inclines downwards towards the air inlet end plate 4, and the reversing portion 22 is a U-shaped bent channel.

In the application, the EGR cooler is used for a heavy-duty engine, is used for cooling exhaust gas, and reduces the impact of cooling liquid on the reversing part 22 through the flow slowing part 21, so that the service life of the reversing part 22 is prolonged; the rotary reversing of the cooling liquid is realized through the U-shaped structure of the reversing part 22, and the design of the water outlet 23 is matched, so that the cooling liquid can be flushed onto the air inlet end plate 4, the heat conducted to the air inlet end plate 4 through the wall of the waste gas pipe can be brought away more quickly, the durability of the air inlet end plate 4 is improved, and the service life of the EGR cooler is further prolonged; meanwhile, the coolant has better washing distribution and flow velocity in the cooler shell 1, the heat transferred from the heat exchange core body 5 in the EGR cooler is taken away more quickly, the heat dissipation performance is improved, and the service lives of the heat exchange core body 5 and the EGR cooler are prolonged.

Preferably, the flow slowing part 21 is an S-shaped curve, so that the cooling liquid flows in an S-shaped direction, the impact force of the cooling liquid on the reversing part 22 is relieved, and the service life of the water inlet pipe 2 is prolonged.

Preferably, the air inlet end plate 4 is provided with a plurality of uniformly arranged air inlets, and the air inlets are communicated with the heat exchange core body 5 in the cooler shell 1, so that the exhaust gas flows into the heat exchange core body 5 of the EGR cooler.

Preferably, be equipped with first gasket 6 between flange joint 3 and the end plate 4 that admits air, be equipped with second gasket 7 between end plate 4 that admits air and the cooler casing 1, guarantee that end plate 4 that admits air is connected closely with flange joint 3, cooler casing 1, guarantee sealing performance.

Preferably, the side of flange joint 3 that keeps away from air inlet end plate 4 is equipped with air inlet 31, air inlet 31 adopts frustum structural design, realizes the diffusion of waste gas, improves the flow property of waste gas.

Preferably, the flange joint 3, the air inlet end plate 4 and the cooler shell 1 are connected through a plurality of bolts 8 and used for connecting the flange joint 3, the air inlet end plate 4 and the cooler shell 1, and the method is simple and convenient.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the content of the present invention within the protection scope of the present invention.

Claims

1. A water inlet end structure of an EGR cooler comprises a cooler shell (1), and is characterized in that: the top of cooler casing (1) is connected with inlet tube (2), inlet tube (2) contain the slow flow portion (21), switching-over portion (22) and delivery port (23) that connect gradually, delivery port (23) and cooler casing (1) intercommunication, the end of being close to inlet tube (2) of cooler casing (1) is connected with flange joint (3), be equipped with inlet end plate (4) between flange joint (3) and cooler casing (1), delivery port (23) are to inlet end plate (4) direction slope decurrent mouth of a river, switching-over portion (22) are the U-shaped bend.

2. The structure of a water intake end of an EGR cooler according to claim 1, wherein: the slow flow part (21) is an S-shaped curve.

3. The structure of a water intake end of an EGR cooler according to claim 1, wherein: the air inlet end plate (4) is provided with a plurality of uniformly arranged air inlets which are communicated with a heat exchange core body (5) in the cooler shell (1).

4. The structure of a water intake end of an EGR cooler according to claim 1, wherein: a first gasket (6) is arranged between the flange joint (3) and the air inlet end plate (4), and a second gasket (7) is arranged between the air inlet end plate (4) and the cooler shell (1).

5. The structure of a water intake end of an EGR cooler according to claim 1, wherein: the side of the flange joint (3) far away from the air inlet end plate (4) is provided with an air inlet (31), and the air inlet (31) adopts a frustum structural design.

6. The structure of a water intake end of an EGR cooler according to claim 1, wherein: the flange joint (3), the air inlet end plate (4) and the cooler shell (1) are connected through a plurality of bolts (8).