Vibration enhanced heat transfer device for automobile radiator

Abstract

The invention discloses a vibration strengthening heat transfer device of an automobile radiator. The vibration strengthening heat transfer device of the automobile radiator comprises a radiator body. The two ends of the radiator body are provided with a left elastic vibrator and a right elastic vibrator respectively. The left elastic vibrator and the right elastic vibrator are of the same structure and each comprises a side plate connected with the radiator body. A bearing pedestal is installed on each side plate. A guiding shaft is arranged in each bearing pedestal in a penetrating manner. The portion, at the upper end of the corresponding bearing pedestal, of each guiding shaft further penetrates the upper wing edge of a support and then is connected with an upper limiting device. The portion, at the lower end of the corresponding bearing pedestal, of each guiding shaft further penetrates the lower wing edge of the support and then is connected with a lower limiting device. The portion, between the corresponding bearing pedestal and the upper wing edge, of each guiding shaft is provided with an upper spring. The portion, between the corresponding bearing pedestal and the upper wing edge, of each guiding shaft is provided with a lower spring. According to the vibration strengthening heat transfer device, after the left elastic vibrator and the right elastic vibrator are installed, the gas side heat exchange efficiency is substantially improved, and therefore the overall heat exchange capacity is improved, and the purpose of achieving strengthened cooling of the automobile radiator through vibration is achieved.

Description

technical field [0001] The invention relates to the technical field of radiator cooling, in particular to a vibration-enhanced heat transfer device for an automobile radiator. Background technique [0002] The car radiator dissipates the excess heat in the engine through convective heat exchange, so as to ensure the safe and reliable operation of the engine at an appropriate temperature. An ideal radiator has the characteristics of high heat dissipation efficiency, small overall size, light weight and low manufacturing cost. The development of the modern automobile industry and the fierce competition among radiator manufacturers are pushing the radiator towards an ideal direction. The key to the development of heat sink technology is to continuously improve its heat dissipation efficiency, so as to reduce size and mass. Since the 1960s, with the development of enhanced heat transfer technology, automobile radiators have been continuously improved and innovated in structure ...

AI Technical Summary

Problems solved by technology

Since the 1960s, with the development of enhanced heat transfer technology, automobile radiators have been continuously improved and innovated in structure and materials, and finally developed into the tube-strip and tube-fin structures that are widely used today. However, the structure of these radiators It has been fully optimized and has a very efficient heat transfer effect. For example, the tube-and-belt radiator uses the heat dissipation belt as an extended secondary heat transfer surface, and uses fin louvers for turbulence to achieve composite enhanced heat transfer; therefore, it has been used for more than ten years. The related research on radiators only stays in the optimization of the characteristic parameters of the existing structure, and has not found an effective way to improve the heat transfer capacity.

[0003] A large number of studies have pointed out that the louver structure in the car radiator can destroy the growth of the boundary layer and is a very efficient heat transfer surface. At a high Reynolds number, the air side airflow will flow more along the louver channel, and the turbulence effect is obvious at this time , the heat transfer effect is better; however, at a low Reynolds number, the airflow is dominated by the fin channel flow, the effect of the louvers cannot be brought into play, and the heat transfer effect is also poor, which shows that the existing radiator structure at a low Reynolds number It does not give full play to its advantages, and still has the potential to further enhance heat dissipation. In other words, as long as we can find ways to improve the turbulence capacity of the heat transfer wall at low Reynolds numbers, the existing radiator can obtain higher heat dissipation efficiency

[0004] It is not difficult to see from the above introduction that the development of the automobile industry (the engine power is getting bigger and the car space is getting more and more compact and narrow) requires the car radiator to have higher heat dissipation efficiency, while the existing radiator structure still has To further improve the potential of heat dissipation efficiency, it is necessary to seek new ways to enhance heat transfer of automobile radiators to obtain higher heat dissipation efficiency of radiators to meet the needs of social development

[0005] Since the 1960s, the enhanced heat transfer technology in the field of heat exchangers has developed vigorously, and vibration enhanced heat transfer technology has been extensively studied. It has been found that wall vibration can improve heat transfer efficiency, and the effect of enhanced heat transfer is positively correlated with vibration intensity; The application of vibration-enhanced heat transfer means in the field of radiators has also been widely used, but it has never been used in automobile radiators. In fact, the mechanism of vibration-enhanced heat transfer through turbulence is similar to that of louvers. The enhanced heat transfer provides a good idea

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