# US 10,772,235 B2 · Heat sink and manufacturing method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,772,235 B2 - Document ID: US10772235B2 - Status: Granted - Kind: B2 - Application number: 15/622,944 - Filed: 2017-06-14 - Published: 2018-06-14 - Granted: 2020-09-08 - Earliest claimed: 2016-12-09 - Assignees: Cooler Master Technology Inc. - Applicants: Cooler Master Technology Inc. - Inventors: Yu-Te Wei - Web page: https://patentgrep.com/patent/US10772235B2 ## CPC - H05K 7/20336: {Heat pipes, e.g. wicks or capillary pumps} - B23P 15/26: heat exchangers {or the like (making heat exchangers by methods covered by other subclasses B21D53/02)} - F28D 15/0233: {the conduits having a particular shape, e.g. non-circular cross-section, annular (F28D15/0241, F28D15/0266 take precedence)} - F28D 15/0275: {Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores} - F28F 21/084: {from aluminium or aluminium alloys} - G06F 1/20: Cooling means - H10W 40/226: {characterised by projecting parts, e.g. fins to increase surface area (leadframes for cooling H10W70/461)} - H10W 40/73: for cooling by change of state - B23P 2700/09: Heat pipes - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q) - F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general) - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract A heat sink and its manufacturing method. The heat sink includes a base and plural heat pipes. The base has a first surface, plural parallel heated areas concavely formed on the first surface, a protrusion disposed between any two heated areas and protruding in a direction towards the first surface, and at least one notch formed on each protrusion. A first protrusion portion and a second protrusion portion are formed at the top of the protrusion and the top of notch respectively. The heat pipes are embedded into the heated areas respectively in the lengthwise direction, and the heat pipes at the notches of the protrusions are attached and in contact with each other. The notch of each heat pipe may be compressed and deformed, so that the heat pipes are in contact with each other. ## Claims ### Claim 1 A heat sink, comprising: a base, having a first surface, a plurality of parallel heated areas concavely formed on the first surface, a protrusion disposed between any two heated areas and protruding in a direction towards the first surface, and a notch formed at any one section of each protrusion; and a plurality of heat pipes, embedded into the heated areas respectively in the lengthwise direction of each heat pipe, and attached and in contact with one another at the position of the notch; wherein the base further has two lateral surfaces opposite to each other, the first surface and the two lateral surfaces respectively face different directions, the protrusion begins at one of the lateral surfaces of the base and extends continuously along the base below the notch so as to end at the other of the lateral surfaces of the base, and the notch is spaced apart from the two lateral surfaces of the base. ### Claim 2 (depends on 1) The heat sink of claim 1, wherein the base is made of a material selected from the group consisting of copper and aluminum. ### Claim 3 (depends on 1) The heat sink of claim 1, wherein the base is formed by stacking a plurality of spaced fins. ### Claim 4 (depends on 1) The heat sink of claim 1, wherein the opposite side of the first surface of the base further has a plurality of spaced fins. ### Claim 5 (depends on 1) The heat sink of claim 1, wherein the heat pipes together form a heated surface. ### Claim 6 (depends on 5) The heat sink of claim 5, wherein the heated surface of the heat pipes is aligned exactly with or relatively protruded from the-first surface of the base. ### Claim 7 (depends on 1) The heat sink of claim 1, wherein the heat pipes have contact surfaces in contact with one another at the notch. ### Claim 8 (depends on 1) The heat sink of claim 1, wherein each the protrusion is aligned exactly with the-first surface of the base. ### Claim 9 (depends on 8) The heat sink of claim 8, wherein the heat pipes are deformed along the protrusion and a connecting portion extends from each heat pipe, and the connecting portions are abutted with each other to define a common plane. ### Claim 10 A heat sink, comprising: a base, having a first surface, a plurality of parallel heated areas concavely formed on the first surface, a protrusion disposed between any two heated areas and protruding in a direction towards the first surface, and each protrusion comprising a first protrusion portion and a second protrusion portion, wherein there is a height difference between the first protrusion portion and the second protrusion portion; and a plurality of heat pipes, embedded into the heated areas respectively in the lengthwise direction of each heat pipe, and the heat pipes in contact with one another at a top of the second protrusion portion; wherein the distance between a surface of the first protrusion portion and the first surface of the base in a first direction is smaller than a distance between a surface of the second protrusion portion and the first surface of the base in the first direction. ### Claim 11 (depends on 10) The heat sink of claim 10, wherein the base is made of a material selected from the group consisting copper and aluminum. ### Claim 12 (depends on 10) The heat sink of claim 10, wherein the base is formed by stacking a plurality of spaced fins. ### Claim 13 (depends on 10) The heat sink of claim 10, wherein the opposite side of the first surface of the base further has a plurality of spaced fins. ### Claim 14 (depends on 10) The heat sink of claim 10, wherein the heat pipes together form a heated surface. ### Claim 15 (depends on 14) The heat sink of claim 14, wherein the heated surface of the heat pipes is aligned exactly with or relatively protruded from the first surface of the base. ### Claim 16 (depends on 10) The heat sink of claim 10, wherein each of the heat pipes has a deformation portion formed at the top of the second protrusion portion, and the deformation portions have a contact surface. ### Claim 17 (depends on 10) The heat sink of claim 10, wherein each first protrusion portion is aligned exactly with the first surface of the base. ### Claim 18 (depends on 17) The heat sink of claim 17, wherein the heat pipes are deformed along the first protrusion portion, and a deformation portion extends from each heat pipe, and the deformed portions are abutted with each other to define a common plane.