An electronic device water cooling system drives a pump

Abstract

The invention belongs to the technical field of heat dissipation and cooling, and in particular relates to a driving pump for an electronic device water cooling system. Both the pump cover and the pump body are equipped with an inlet and outlet valve consisting of a disc valve. The pump cover is installed on the pump body. A transducer is crimped in the body cavity of the pump body through the pump cover body platform and the sealing ring. The transducer is made of elastic The piezoelectric vibrator is formed by bonding the substrate and the piezoelectric sheet; the transducer and the sealing ring, the pump cover and the pump body respectively form the upper and lower pump chambers, and the upper and lower pump chambers are connected in parallel. The pump cavity is connected in series with the lower pump cavity connected in parallel; at least one piezoelectric vibrator includes a driver and a sensor, and the power supply outputs the same DC driving voltage signal to the piezoelectric vibrator and the driver, and uses the sensing voltage signal generated by the sensor to determine the deformation of the piezoelectric vibrator state, when the sensing voltage reaches the extreme value, the driving voltage of the power supply and the deformation direction of the piezoelectric vibrator are reversed, and the alternating direction of the driving voltage forms the reciprocating bending vibration of the piezoelectric vibrator and the unidirectional flow of the fluid.

Description

technical field [0001] The invention belongs to the technical field of heat dissipation and cooling, and in particular relates to a driving pump for an electronic device water cooling system. Background technique [0002] In recent years, with the improvement of the integration and miniaturization of sub-products, as well as the continuous improvement of the operating speed and configuration density of electronic components such as chips and integrated circuits, the internal ventilation performance of electronic equipment is continuously declining, and the development of electronic components The heat is constantly rising, and cooling methods such as traditional fans and external heat sinks can no longer meet the actual needs. The cooling and heat dissipation effect of the internal components of electronic equipment has become a key factor restricting its reliability and operational stability. Based on this, people have successively proposed a variety of new air-cooled and w...

AI Technical Summary

Problems solved by technology

Due to the limited fluid pressure and fluid circulation capacity formed by the proposed micro fan and micro pumping system, and the unsatisfactory heat dissipation and cooling effect, there are certain limitations in practical application. The pressure is greatly affected by the working conditions. Fluid viscosity, temperature and output pressure affect the resonant frequency of the pump by affecting the system damping. When the resonant frequency of the piezoelectric vibrator under specific working conditions deviates greatly from the set excitation frequency, The output flow and pressure of the pump will drop significantly

Therefore, the output performance of the piezoelectric pump at a fixed frequency is not ideal, and the accuracy of the output flow and pressure calculated according to the set driving voltage and frequency is also low; in addition, most of the existing piezoelectric pumps use cantilever beam type The cut-off valve has poor flatness and cut-off effect, which seriously affects the output flow and pressure of the pump

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