Evaporators for loop heat pipes, loop heat pipe systems and electrical appliances

Abstract

The invention relates to the technical field of heat exchange equipment with a tube bundle of a capillary structure, and provides an evaporator for a loop heat pipe and a loop heat pipe system. The evaporator for the loop heat pipe comprises a heat conduction housing, a solution containing inner shell, a connecting bracket and a capillary core, wherein the solution containing inner shell is arranged in an inner cavity of the heat conduction housing; the connecting bracket is supported between the heat conduction housing and the solution containing inner shell; the heat conduction housing and the solution containing inner shell are arranged in a spaced mode; the capillary core and the solution containing inner shell are enclosed into a solution collecting cavity; the inner surface of the heat conduction housing, the outer surface of the solution containing inner shell, and the side surface, away from the solution collecting cavity, of the capillary core are enclosed to form a steam cavity; a first liquid flow inlet and a steam outlet are formed in the heat conduction housing; and a second liquid flow inlet is formed in the solution containing inner shell. The heat conduction housingand the outside have a greater contact area, so that quick heat dissipation around the evaporator for the loop heat pipe is favourably realized; besides, the solution containing inner shell and the solution collecting cavity are prevented from excessively absorbing heat to avoid a heat leakage phenomenon, so that the steam cavity is prevented from being dried out, and therefore, heat dissipationof the evaporator for the loop heat pipe is guaranteed to be stable.

Description

technical field [0001] The invention relates to the technical field of heat exchange equipment with capillary structure tube bundles, in particular to an evaporator for a loop heat pipe, a loop heat pipe system and an electrical appliance. Background technique [0002] In the prior art, the evaporator used for the loop heat pipe includes a liquid collection chamber and a steam chamber, and a capillary wick is connected between the liquid collection chamber and the steam chamber. The loop heat pipe system supplies liquid flow to the liquid collection chamber, and the liquid flow passes through the capillary wick. Infiltrating into the steam chamber, the steam chamber absorbs external heat through the heat conduction shell, vaporizes the liquid flow penetrating into the steam chamber to form steam and flows out of the steam chamber, the evaporation of the liquid flow on the capillary wick forms a suction force for the penetrating liquid flow in the capillary wick, Furthermore,...

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Problems solved by technology

[0003] However, in the prior art, the liquid-containing inner shell of the liquid collection chamber is also exposed to the environment. On the one hand, the liquid in the solution chamber also absorbs a large amount of heat, and a large amount of steam is formed in the liquid collection chamber. At this time, a large amount of steam also follows through the capillary wick. After the steam reaches the steam chamber through the wick, it cannot absorb heat and vaporize, resulting in heat leakage. Therefore, it cannot generate suction force on the liquid flow in the capillary wick, so that the liquid collection chamber moves towards the steam chamber. The penetration rate of the liquid flow slows down, causing the penetration rate of the liquid flow from the liquid collection chamber to the steam chamber to not keep up with the evaporation rate of the liquid flow in the steam chamber, resulting in unstable heat dissipation, and may cause the steam chamber to dry out, which is not conducive to environmental protection. The evaporator of the loop heat pipe takes away the heat around it through the phase change of the working fluid; on the other hand, when the surface area of ​​the evaporator of the loop heat pipe remains unchanged, the exposure of the liquid inner shell to the environment also compresses the heat conduction. The contact area between the shell and the environment further slows down the absorption of heat from the environment by the steam chamber, which is not conducive to the rapid heat dissipation of the surrounding environment by the evaporator of the loop heat pipe

[0004] In addition, in the prior art, the capillary wick is placed on the top or side of the liquid-containing inner shell, so that the liquid flow from the liquid collection chamber to the steam chamber penetrates the liquid collection chamber to fill the cavity and needs to apply pressure to the liquid collection chamber to complete , causing difficulty in starting

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