A circulating pump for cpu water cooling system

Abstract

The invention belongs to the technical field of heat dissipation and cooling and particularly relates to a CUP water cooling system circulation pump. A pump cover is arranged on a pump body, and inletvalves and outlet valves are arranged on the pump cover and the pump body. The inlet valves and the outlet valves are butterfly valves. Transducers are connected in a pump body cavity through pump cover body tables and sealing rings, and each transducer is composed of an elastic ring and piezoelectric vibrators stuck to the two sides of the elastic ring. Each piezoelectric vibrator is formed by connecting a base plate and piezoelectric pieces in a sticking manner. Upper pump cavities are formed by the transducers and the pump cover, and lower pump cavities are formed by the sealing rings andthe pump body. The upper pump cavities which are connected in parallel are then in parallel connection with the lower pump cavities which are connected in parallel. At least one piezoelectric vibratorcomprises a driver and a sensor. A power source outputs the same direct-current drive voltage signal to all the piezoelectric vibrators and the drivers, a sensing voltage signal generated by the sensor is used for judging the deformation state of the piezoelectric vibrators, when the sensing voltage reaches the extreme value, the power source drives the voltage and the piezoelectric vibrators tochange deformation directions, and therefore reciprocating bending vibration of the piezoelectric vibrators and one-direction flowing of fluids are achieved.

Description

technical field [0001] The invention belongs to the technical field of heat dissipation and cooling, and in particular relates to a circulation pump for a CPU 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 water-cooled...

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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