One-way loop gravity assisted heat pipe and manufacturing method thereof

Abstract

The invention discloses a one-way loop gravity assisted heat pipe. The one-way loop gravity assisted heat pipe comprises a liquid bag, a short connecting pipe, a necking down reducer union and a long connecting pipe. The invention further discloses a manufacturing method of the one-way loop gravity assisted heat pipe. The necking down reducer union is added in the loop gravity assisted heat pipe to achieve a necking down structure to enable the flowing direction of a working medium in the loop gravity assisted heat pipe to be uniquely determined during working, in other words, the whole heat pipe shows the one-way performance, and therefore the one-way loop gravity assisted heat pipe is started more rapidly compared with an ordinary loop gravity assisted heat pipe, and the heat of a heat dissipation end is more efficiently utilized. In addition, the heated end of the one-way loop gravity assisted heat pipe is located at the bottommost end of the heat pipe, and therefore the one-way loop gravity assisted heat pipe has wide applicability, and is compact in structure and low in cost.

Description

technical field [0001] The present invention relates to the field of heat transfer equipment, and more particularly to a gravity heat pipe, especially a loop gravity heat pipe, and a manufacturing method thereof. Background technique [0002] The heat pipe is a heat transfer element that relies on the phase change of its internal working liquid to transfer heat. It has the advantages of high thermal conductivity, excellent isothermal property, and wide environmental adaptability. Gravity heat pipe, also known as thermosiphon, relies on gravity difference to realize heat pipe function. The gravity heat pipe is a heat pipe without a liquid-absorbing core, so the structure is relatively simple and the cost is low, and it has been widely used at present. There must be a complete circuit inside the heat pipe for the circulation of the working fluid, which is a necessary condition for the normal operation of the gravity heat pipe. The loop gravity heat pipe passes through the lo...

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Problems solved by technology

[0003] In view of this, the object of the present invention is to provide a unidirectional loop gravity heat pipe and its manufacturing method that can make the working fluid inside the heat pipe have unidirectional flowability (hereinafter referred to as "unidirectionality") during work, so as to overcome the " Two-headed", slow start-up, and low heat transfer efficiency due to uncertain flow direction

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