Synthetic jet heat radiating device

Abstract

The invention discloses a synthetic jet heat radiating device comprising a heat exchange element, a piston cylinder and a synthetic jet device, wherein the heat exchange element is provided with an inner cavity, and an outer wall corresponding to the inner cavity can be used for installing a heating source and a heat radiating element; the piston cylinder is arranged on the outer wall and is provided with a piston cavity clinging to the outer wall and a piston assembled in the piston cavity; the synthetic jet device comprises a shell in which at least one chamber with an opening is arranged, the chamber is provided with a thin film wall with elasticity, and the thin film wall is in transmission connection with the piston through a piston rod; the piston drives the thin film wall to reciprocate through the piston rod by using heat from a heating source transmitted by the heat exchange element so that compression and expansion periodical change is generated in the chamber and jet is generated at the opening. In the invention, a passive heat radiation mechanism and an active heat radiation mechanism without power consumption are combined, so that a better heat radiating effect can be achieved; in addition, the environment friendly requirements for energy saving and emission reduction are met, therefore, compared with the traditional active synthetic jet device, the synthetic jet heat radiating device has the advantage that the service life of an element is longer.

Description

technical field [0001] The invention relates to a cooling device, in particular to a synthetic jet cooling device. Background technique [0002] Synthetic jet is an active cooling technical solution, which generally adopts a diaphragm that can realize reciprocating motion. The diaphragm is connected to a power source, and the motion provided by the power source to the diaphragm causes the periodic suction and emission of the airflow at the opening, thereby form a jet. The frequency of the synthetic jet is fast, which can increase the flow rate of most of the heat emitted from the heat source, and can discharge a large amount of heat; selectively adjust the position of the jet to such as cooling fins or other places that need to be cooled, which can further Improve cooling efficiency. Because the synthetic jet heat dissipation technology has the advantages of efficient heat dissipation, less air volume requirement, small size, no noise, high durability, and long life, it is...

AI Technical Summary

Problems solved by technology

The common point of this type of technical application is that the synthetic jets are all electric components, such as piezoelectric sheets are used to stimulate the jet flow, that is to say, they are all actively consuming electric energy.

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