Dual ultrasonic heat pipe cooling device

Abstract

The invention discloses a double-ultrasonic heat pipe cooling device, which belongs to the technical field of refrigeration and heat exchange. The double ultrasonic heat pipe cooling device includes a heat pipe, and the heat pipe includes a hot end and a condensation end. The heat pipe is provided with a piezoelectric ultrasonic transducer at the hot end and the condensation end respectively, and the piezoelectric ultrasonic transducer is connected between the hot end and the condensation end. Ultrasonic waves of different frequencies are generated at the hot end, the frequency range of the ultrasonic wave at the hot end is 20kHz-40kHz, and the frequency range of the ultrasonic wave at the condensing end is 400kHz-700kHz; the piezoelectric ultrasonic transducer includes piezoelectric ceramics and vibrators connected with piezoelectric ceramics. The invention can promote the flow of liquid and gas in the heat pipe, and improves the heat dissipation efficiency.

Description

technical field [0001] The invention relates to the technical field of refrigeration and heat exchange, in particular to a double ultrasonic heat pipe cooling device. Background technique [0002] At present, equipment and devices are developing towards miniaturization and integration. For the heat dissipation of equipment, especially some microprocessors, it is required that the heat dissipation device must also be miniaturized and more efficient. The heat pipe has good heat transfer efficiency and extremely small internal thermal resistance, so it has a good heat dissipation effect. The occupied area and volume of the heat pipe are small, and the service life is long. It has been widely used in the cooling of computer CPUs. [0003] The principle of the heat pipe is: one end of the heat pipe is in contact with the heating element, and the other end is in contact with the fin for condensation; when there is a temperature difference between the two ends, the liquid at the ho...

AI Technical Summary

Problems solved by technology

But when the temperature is not too high, the movement speed is limited, so the heat dissipation efficiency will also slow down

Moreover, most heat pipes work between 0°C and 250°C, but the working temperature of general components is lower than 100°C. It is difficult for heat pipes, a passive heat dissipation method, to maximize their heat transfer efficiency.

[0004] As a heat transfer device that dissipates heat through steam, the heat pipe has a carry limit and a dry limit, which limits the heat transfer efficiency of the heat pipe

Moreover, due to the structural characteristics of the heat pipe itself, there is a shear force that hinders each other between the evaporating gas and the return liquid, which limits the heat transfer efficiency of the heat pipe.

Images