EGR cooler easy to assemble

Abstract

The invention discloses an EGR cooler easy to assemble. The EGR cooler easy to assemble comprises a water shell, a water pipe and multiple cooling pipes; a main plate and an air chamber are arranged at the two ends of the water shell; the main plate comprises a baseplate; flanges are arranged at the periphery of the baseplate; the baseplate is provided with multiple through holes; the two ends ofthe cooling pipes are inserted in the through holes of the main plate; the two ends of inner cavities of the cooling pipes conduct with an inner cavity of the air chamber to form an air way system; the outer walls of the cooling pipes and space between the water shell and main plates at the two ends form a water way system; the air way system and the water way system are independent and closed; the end surfaces of the flanges of the main plates are welded with the end surface of the water shell; and the inner wall of one end of the air chamber is welded with the outer wall of the flanges of the main plates and the outer wall of the water shell. The assembly relation of the main plates can be reduced, so that the product assembly capacity is improved, the product assembly difficulty is reduced, and the product production cost is reduced; and the main plates only need to guarantee the outer side sizes of the flanges, so that the part machining difficulty is reduced, and the part production cost is further reduced.

Description

technical field [0001] The invention relates to the technical field of heat exchangers, in particular to the field of EGR coolers, in particular to an EGR cooler which is easy to assemble. Background technique [0002] Exhaust gas recirculation technology is one of the main technical routes for engines to achieve national 3 or higher emissions. Exhaust gas recirculation needs to be cooled to a certain temperature by the exhaust gas recirculation cooler (referred to as EGR cooler) before entering the engine cylinder. With the tightening of national emission regulations, engine emissions put forward higher requirements on the heat exchange power of the EGR cooler, which requires the EGR cooler to use more cooling pipes to increase the heat exchange power. [0003] At present, the common structure of EGR cooler, such as figure 1 with figure 2 As shown, it includes a water housing 4, the water housing 4 is provided with a water pipe 3, the inner cavity of the water housing i...

AI Technical Summary

Problems solved by technology

[0004] When assembling the EGR cooler with this structure, first assemble the main board 2 and the cooling pipe 5, then insert the main board 2 into the water shell 4, and finally assemble the air chamber 1 on the outside of the main board 2, the assembly relationship is more complicated, As the number of cooling tubes increases, assembly becomes more difficult

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