A thermosyphon heat exchanger

By using rectangular upflow tube and return tube in the thermosiphon heat exchanger, combined with a microchannel evaporator and a flat microchannel condenser, the problems of large flow resistance and low flow rate in the prior art are solved, and efficient heat removal and low power cooling effects are achieved.

CN110986639BActive Publication Date: 2025-03-21NOVARK TECH (SHENZHEN) CO LTD
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Patent Information

Application Number
CN201911367345.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2019-12-26
Publication Date
2025-03-21
Estimated Expiration
2039-12-26

AI Technical Summary

Technical Problem

When dealing with high heat flux, existing thermosiphon heat exchangers are prone to problems such as large flow resistance, low flow rate and strong instability. The circular pipeline design leads to limited air circulation, large pressure drop, and high fan power consumption.

Method used

The rectangular shape of upflow and return tube is used, combined with a microchannel evaporator and a flat microchannel condenser, and the various components are connected through the microchannel flat tube to reduce flow resistance and increase the effective area of ​​the condenser.

Benefits of technology

It significantly reduces the flow resistance inside the thermosiphon heat exchanger, improves the flow rate of the working fluid, increases the ability to remove heat load and heat flux, reduces fan power consumption, and improves heat dissipation efficiency.

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Abstract

The present invention provides a thermosyphon heat exchanger, comprising: an evaporator, a riser, a condenser, and a return pipe; the outlet of the evaporator is connected to the inlet of the riser, the outlet of the riser is connected to the inlet of the condenser, the outlet of the condenser is connected to the top of the return pipe, and the liquid of the return pipe is transported downward to the inlet of the condenser; the riser and the return pipe are rectangular tubes; the evaporator is a microchannel evaporator, and fins are arranged on the bottom plate of the microchannel evaporator; the condenser includes at least one flat microchannel tube. Reduce power consumption; maximize the effective area of ​​the condenser, reduce wind resistance, and improve heat dissipation efficiency.
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