Method of manufacturing exhaust-pipe-free vapor chamber

A method of manufacturing an exhaust-pipe-free vapor chamber, comprising the steps of:

• A) preparing:
• placing two boards one above the other to form therebetween a receiving space, placing a wick in the receiving space, and sintering the wick to at least one of the two boards, wherein the two boards each have an extension plate extending outward from an end of the board by a predetermined length, with the two extension plates overlapping, adjoining portions of each said board and the extension plate thereof arch outward in a direction perpendicular thereto and thus form a groove of a predetermined length on inward sides of the adjoining portions, with the two boards overlapping and the two extension plates overlapping, the two grooves together form a tunnel, allowing the receiving space and an outside to be in communication with each other by the tunnel, wherein an exhaust pipe is inserted into the tunnel from outward ends of the two extension plates by a predetermined depth, wherein a gap between outer edges of the two boards and a gap between outer edges of the two extension plates are brazed and sealed, and a gap between the exhaust pipe and the two extension plates is also brazed and sealed;
• B) water feeding and gas removing:
• feeding water to the receiving space by the tunnel and removing gas from the receiving space by the exhaust pipe, wherein the water feeding either precedes or follows the gas removing;
• C) sealing:
• clamping portions of the two boards and portions of the two extension plates by a sealing clamp, but not clamping the exhaust pipe, wherein the clamped portions correspond in position to a lengthwise segment of the tunnel and are compressed such that the two grooves disappear because of the compression, allowing at least a portion of the tunnel to be compressed and sealed;
• D) cutting:
• cutting off an external, remaining portion not clamped by the sealing clamp and forming at a point of the cutting a gap which has not yet been brazed;
• and
• E) welding:
• welding and sealing the gap which has not yet been brazed.