Vapor chamber with efficient heat dissipation and manufacturing method thereof

• Main Authors: CAO LONG, GUO JIAJU, WANG GUANGHUI, ZHAO LUXING
• Format: Patent
• Language: Chinese; English
• Published: 03.01.2023
• Subjects: APPARATUS THEREFOR; BASIC ELECTRIC ELEMENTS; BLASTING; CHEMISTRY; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; HEAT EXCHANGE IN GENERAL; HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEATING; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS; SEMICONDUCTOR DEVICES; WEAPONS

The invention provides an efficient heat dissipation vapor chamber and a manufacturing method thereof.The efficient heat dissipation vapor chamber is divided into an upper plate, a gradient hydrophobic layer, a gradient hydrophilic layer and a lower plate, the gradient hydrophilic layer is constructed on the lower plate through the sintering-electroplating technology, and the gradient hydrophilic layer enables liquid at the cold end to rapidly flow to the hot end through the Laplace force effect; after the vapor chamber absorbs heat, a working medium is quickly vaporized into steam, the upper plate is provided with a gradient hydrophobic layer, liquid drops formed by the steam under the action of Laplace force of the gradient hydrophobic layer and the pressure difference between the cold end and the hot end can be quickly transferred to the cold end, a liquid film or the liquid drops form a liquid pool at the cold end, and the liquid drops quickly fall under the dual action of hydrophobicity and gravity, so t