A rotary loop heat pipe evaporation cooling device

Abstract

The invention discloses a rotation-type loop heat pipe evaporative heat loss device. The rotation-type loop heat pipe evaporative heat loss device comprises a closed working cavity formed by a lower shell and an upper shell. An annular liquid suction core which forms an independent compensation cavity at the inner side of the inner circumference and can rotate circumferentially is installed in the working cavity under the limiting action of a circular space formed by butt joint of an upper positioning base and two lower positioning bases. The outer bottom of the lower shell is a heating surface. The space encircled by the lower shell, the two lower positioning bases and the annular liquid suction core forms an evaporation cavity. A liquid suction core rotating hub is installed on the inner circumference of the annular liquid suction core. The liquid suction core rotating hub is connected with a rotating shaft of a motor used for controlling the liquid suction core to rotate according to the temperature of the heating surface. According to the rotation-type loop heat pipe evaporative heat loss device, the rotatable annular liquid suction core with the position capable of being changed is installed in the closed working cavity, the control motor is used for controlling the annular liquid suction core to rotate according to temperature feedback of the heating surface so that the position can be changed, and the phenomena of back heat conduction, heat leakage and the like of a loop heat pipe can be actively and effectively restrained or relieved under the working conditions of constant heat flow and non-constant heat flow.

Description

technical field [0001] The invention relates to the field of thermal energy engineering, in particular to a rotary loop heat pipe evaporation and cooling device. Background technique [0002] In recent years, the technology of high heat flux devices in the fields of electronic product equipment, aerospace, energy and chemical industry has developed rapidly, and the degree of integration of related devices and equipment has become higher and higher, resulting in a sharp increase in the heat dissipation of single equipment and complete machines. The heat dissipation of high-load and high-power equipment has become the biggest obstacle restricting technological leaps in related fields. The loop heat pipe is considered to be a new type of heat dissipation device with good application potential and heat dissipation effect at the same time. However, due to the disadvantages of the loop heat pipe evaporator itself such as back heat conduction and heat leakage, it is easy to cause a...

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Problems solved by technology

The loop heat pipe is considered to be a new type of heat dissipation device with good application potential and heat dissipation effect at the same time. However, due to the unfavorable factors such as back heat conduction and heat leakage of the loop heat pipe evaporator itself, it is easy to cause abnormalities in the liquid-absorbing core during operation. The phenomenon of cut-off and drying up of the evaporation chamber makes the heat generated by the cooled heat dissipation equipment unable to be taken away in a timely and effective manner, that is, the phenomenon of failure, which endangers the safety of the cooled heat dissipation equipment

At present, the loop heat pipe cannot be effectively applied to the field of high constant heat flux and non-constant heat flow heat dissipation. Currently, researchers in this field mainly focus on the optimization of the loop heat pipe system, material selection and processing, liquid-absorbing core, and filling process. However, the actual application effect is not satisfactory, and it is still unable to effectively and actively deal with the thermal load and thermal shock under the action of high constant heat flow and non-constant heat flow, and the system operates at high temperature and poor stability , limiting the further development of related industries

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