A Composite Fin Heat Exchanger Based on Bionic Principle

Abstract

The invention discloses a composite fin heat exchanger based on a bionic principle. The composite fin heat exchanger comprises multiple bionic wing fins; the bionic wing fins comprise flat flowing parts; one ends of the flat flowing parts extend out of a plate in the thickness direction of the plate to form extension parts; the tail ends of the extension parts are inwards gathered in the thicknessdirection of the plate to form semi-elliptical windward parts; multiple small holes are formed in the bionic wing fins; and the small holes on the adjacent bionic wing fins are staggered from each other. The bionic wing fins are gradually thinned in an airflow direction, so that an airflow channel is widened, the airflow friction resistance is reduced, and the noise above 1000 HZ can be effectively inhibited. In addition, the staggered small holes are formed in the bionic wing fins, and each small hole forms a silencing cavity, so that the noise below 1000 HZ can be weakened, the noise reducing frequency range is wide, and the comfort is excellent. In addition, when air currents pass through the small holes, as the apertures of the small holes are smaller, the speed of the air currents flowing to the small holes is accelerated to form jet heat exchange to improve the heat transfer effect of the heat exchanger.

Description

technical field [0001] The invention relates to a fin heat exchanger, in particular to a composite fin heat exchanger based on the bionic principle. Background technique [0002] With the improvement of the quality of life, in addition to energy-saving requirements, people's requirements for the mute performance of air conditioners and other white goods are constantly increasing. As an important indicator of air conditioning comfort, the noise of indoor fan coil units has attracted more and more attention from users. The finned heat exchangers of existing air-conditioning products generally only consider the heat exchange and energy-saving performance requirements, and the emphasis on noise reduction and noise reduction is mainly concentrated on the motor. In fact, since most fan coil units are concealed, the noise generated by the motor inside the fan coil unit is mainly transmitted to the room through the air supply port. On the other hand, the flow noise of fresh air and...

AI Technical Summary

Problems solved by technology

[0013] (1) Only consider reducing the noise of the fan, or achieve noise reduction by changing the macroscopic shape of the tuyere, and lack of a silent solution for the fin heat exchanger from a microscopic point of view;

[0014] (2) The noise reduction structure design is relatively simple, and there is no consideration for how to reduce the friction noise between the fresh air at the air supply port and the fins, and the overall noise reduction effect is limited

[0015] (3) Quietness and energy saving are the two core qualities of air conditioners. The current heat exchanger products do not take into account how to balance quietness and energy saving.

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