Oil cooler

Abstract

The present invention relates to an oil cooler, which includes: a plurality of flow path plates, which are stacked to form an oil flow portion for oil flow and a cooling water flow portion for cooling water flow; an upper plate and a lower plate, which are combined A flow path plate; a mounting plate coupled to the upper plate; and a central pipe coupled to the upper plate and the plurality of flow path plates and the lower plate in a penetrating manner, the upper end of which is inserted into a seating groove formed in the mounting plate recess to be coupled , the center pipe is firmly bonded to the mounting plate in a vertical state, thereby preventing poor joint between the center pipe and the mounting plate when joining by brazing, and preventing oil leakage at the portion connecting the oil flow path.

Description

technical field [0001] The present invention relates to an oil cooler capable of cooling oil filled in an engine or a transmission of an automobile for lubricating and maintaining airtightness. Background technique [0002] Generally, a vehicle includes not only an air-conditioning system for supplying cool air to a room, but also a cooling system in the form of a heat exchanger such as a radiator or an oil cooler. [0003] The oil cooler is used as a heat exchanger for cooling the oil filled in the vehicle's engine or transmission to achieve lubrication and maintain airtightness. When the oil is overheated, the viscosity of the oil decreases and the lubrication and airtightness cannot be achieved. Maintaining the function, especially in the case of poor lubrication, may cause damage to components such as the engine and transmission. [0004] Here, it is widely used that the temperature of the oil circulating inside the oil cooler is relatively higher than the temperature o...

AI Technical Summary

Problems solved by technology

[0008] However, due to the structure in which the center tube is bonded to the mounting plate of the flat structure, when assembling before joining by brazing, the movement of the center tube due to play causes poor brazing, and the joining cannot be performed well.

In addition, due to the movement of the center pipe, the perpendicularity of the center pipe on the basis of the mounting plate is not good, and when the oil cooler is connected to the engine block, etc. by passing the connection unit through the center pipe, the connection cannot be performed with the correct torque. Therefore, it may happen that the coupling unit is loosened

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