Car heat exchanger with upper reverse punching flanging and lower reverse punching double main board

Abstract

The invention discloses an upper reverse punched flange and lower revere punched hole double mainboard for an automobile heat exchanger. The double mainboard comprises a composite structure with an upper mainboard body and a lower mainboard body combined together, the upper mainboard body is provided with a reverse punched flange, the lower mainboard body is provided with a reverse punched hole, after the punching and flanging process, the upper mainboard body protrudes to form a short pipe which is inserted into a mainboard hole of the lower mainboard body, after the lower mainboard body and the upper mainboard body are combined, a plane I and a plane II are in close contact, a clearance is formed between a plane III and a plane IV, the seaming area of the mainboard and a heat radiation pipe is increased, the position, close to the mainboard, of the heat radiation pipe is locally enhanced, and structural strength is improved.

Description

technical field [0001] The invention relates to a heat exchange device, in particular to an automobile heat exchanger with a double main board structure. Background technique [0002] During the normal operation of the car, various heat exchangers are inseparable. The radiator for the engine water jacket is to ensure that the engine is stable in a certain temperature range for a long time, continues to work normally, and maintains the highest working efficiency of the engine. With the development of the automobile industry, the continuous improvement of the engine power per liter, the continuous increase of the working pressure of the engine cooling system, the widespread use of turbochargers, and the continuous improvement of the performance of the turbocharger system, the pressure and temperature of the system have also doubled. In order to meet the requirements of higher temperature and higher pressure, conventional heat exchangers cannot meet the needs of higher engines....

AI Technical Summary

Problems solved by technology

With the development of the automobile industry, the continuous improvement of the engine power per liter, the continuous increase of the working pressure of the engine cooling system, the widespread use of turbochargers, and the continuous improvement of the performance of the turbocharger system, the pressure and temperature of the system have also doubled. Trend, in order to meet the requirements of higher temperature and higher pressure, conventional heat exchangers cannot meet the needs of higher engines

Most of the heat exchangers now have the same problem, that is, the material wall thickness of the main board or the collector plate and the heat dissipation pipe is very different, which causes the heat exchanger to fail due to vibration, cold and heat shock, and pressure alternating shock, resulting in The car engine is weak, the emission exceeds the standard, the fuel consumption is increased, the braking effect is poor, and the multi-drive cannot be switched in time, etc., which will affect the normal work

In the existing conventional technology, deformation and cracking of the main board often occur, which is due to the continuous increase of the internal system pressure of the intercooler, which causes the strength of the main board material to drop sharply and fail under high temperature and high pressure conditions.

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