Flow deflector for uniform distribution of plate-fin heat exchanger

Abstract

The invention discloses a flow deflector for uniform distribution of a plate-fin heat exchanger. According to the invention, a flow deflector inlet and a flow deflector outlet are formed in a main body of the flow deflector, a deflector is arranged at the flow deflector inlet, and communicated with a liquid storage cavity, the liquid storage cavity is communicated with one side of a liquid distributing cavity through a rectifying plate, and the flow deflector outlet is formed in the other side of the liquid distributing cavity. The flow deflector disclosed by the invention is suitable for the plate-fin heat exchanger, the deflector in the flow deflector can distribute fluid which flows into the heat exchanger, the liquid storage cavity can temporarily store and buffer the fluid, the liquid distributing cavity can uniformly distribute the fluid to the heat exchanger, and the fluid is distributed by depending on the pressure to avoid the occurrence of large pressure in the middle and small pressure on both sides when the fluid enters into the heat exchanger to realize uniform distribution of fluid tissues in the heat exchanger so as to improve the heat exchange efficiency.

Description

technical field [0001] The present invention relates to a heat exchanger, and more specifically, relates to a flow deflector capable of uniformly distributing fluid entering the heat exchanger. Background technique [0002] The main factors that cause the performance degradation of plate-fin heat exchangers are uneven fluid distribution, axial heat conduction and uneven temperature field, and the influence of uneven fluid distribution is the most important among the three. Since the fluid enters the heat exchanger from the inlet, it has undergone multiple changes in the flow area, and the fluid flow has been distributed multiple times from the large channel to the fine channel. As a result, there are serious differences between the channels and the flow layers after entering the fin channel. Uniform phenomenon, the uneven distribution of fluid leads to uneven heat transfer, which is the main reason for the decline in the performance of plate-fin heat exchangers. The researc...

AI Technical Summary

Problems solved by technology

At present, the deflectors of plate-fin heat exchangers cannot effectively solve the above-mentioned problems. The most prominent one is that the flow velocity at the inlet of the deflector is large in the middle and small on both sides, which causes the fluid to be distributed unevenly in the deflector. Causes uneven fluid distribution inside the heat exchanger

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