High heat flow anti-gravity heat pipe

Abstract

The invention provides a high heat flow anti-gravity heat pipe. On the basis of reserving a traditional heat pipe evaporation and condensation heat exchange mechanism, a capillary core structure obstructing medium flowing is omitted, the saturated pressure difference accompanying the cold and hot end temperature difference is directly utilized as driving force, one-way flowing of media is facilitated through an asymmetrical flow channel structure constituted by a flow direction guiding device comprising a Tesla valve, a multi-section reducer pipe, one-way valves, a float valve and the like, and thus the higher anti-gravity heat transfer effect is achieved. The high heat flow anti-gravity heat pipe does not need additionally-applied power, bending, deformation and flexible arrangement can be achieved, limitation of the actual terrain and topography or the equipment structure layout can be overcome, the high heat flow anti-gravity heat pipe is especially suitable for the situations thatin the acceleration changing environment where wobbling, or inclining or posture changing or the like exists, a heat source is higher than a cold source in position, and heat needs to be transmitted downwards, and has wide application prospects.

Description

technical field [0001] The present disclosure relates to the field of heat transfer devices, in particular to a high heat flow antigravity heat pipe. Background technique [0002] The traditional heat pipe utilizes the vapor-liquid phase transition of the working fluid. By absorbing heat and evaporating at the heating end, the steam flows to the cold end to dissipate heat and condense, and the condensate returns to the heating end by gravity or capillary suction. Leads to the cold end, allowing for high-intensity heat transfer capability. Among them, in the gravity heat pipe, the gas moves upward by the buoyancy force formed by the density difference, and the condensate returns to the heating end by its own gravity, so the hot end must be located below the cold end to work normally, which limits its application range. [0003] In the fields of thermal management and thermal protection, there are often heat transfer problems under variable acceleration environments. For exam...

AI Technical Summary

Problems solved by technology

A heat pipe with a capillary core, the condensate can return to the hot end by capillary suction, so it has a certain anti-gravity ability, but the capillary core is a porous medium, which will bring high flow resistance, thus significantly reducing the flow rate of the working fluid. Becomes one of the main bottlenecks limiting heat transfer capability

In addition, due to the weak capillary suction itself, the effect of anti-gravity heat transfer that can be achieved by using capillary suction is very limited. Generally, the highest heat flux load is several W / cm 2 to 130W / cm 2 between

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