# US 5,706,169 A · Cooling apparatus for a computer central processing unit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,706,169 A - Document ID: US5706169A - Status: Granted - Kind: A - Application number: 08/648,249 - Filed: 1996-05-15 - Granted: 1998-01-06 - Earliest claimed: 1996-05-15 - Inventors: Robin Yeh - Web page: https://patentgrep.com/patent/US5706169A ## CPC - H10W 40/43: by flowing gases, e.g. forced air cooling - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract A CPU cooling apparatus comprises a rectangular cooling plate and two corrugated cooling fins. The cooling plate has an underside that is attached to an integrated circuit chip for absorbing heat generated by the IC chip in operation. The cooling fins are mounted on the upper surface of the cooling plate such that the cooling fins are parallel to each other. The cooling fins are provided respectively with a plurality of first cooling ducts contiguous to one another and are further provided therebetween a second cooling duct so as to bring about an increase in the cooling area to enhance the cooling efficiency. The apparatus further comprises a cooling fan and a plurality of cooling ducts which are different in orientation from the first cooling ducts and the second cooling duct for maximizing the cooling effect of the apparatus. ## Claims ### Claim 1 A CPU cooling apparatus comprising: a rectangular cooling plate made of a material having a relatively high thermal conductivity, said cooling plate being attached in one surface thereof to a surface of an integrated circuit chip for absorbing heat generated by said chip in operation; and a least two corrugated cooling fins made of a material having an excellent cooling property said cooling fins being mounted on another surface of said cooling plate such that said cooling fins are parallel to each other, said cooling fins provided respectively with a plurality of first cooling ducts contiguous to one another and perpendicular to a longitudinal axis of said cooling fins, said cooling fins further provided therebetween with a second cooling duct, wherein said second cooling duct is perpendicular to said first cooling duct, wherein said corrugated cooling fins comprise respectively plurality of ridges having a flat apex, wherein said flat apex is provided with a plurality of cooling holes separated from one another at a predetermined interval. ### Claim 2 (depends on 1) The CPU cooling apparatus as defined in claim 1, wherein said cooling plate is provided in an upper surface thereof with a plurality of recesses separated from one another at a predetermined interval such that said recesses are parallel to one side of said cooling plate, and that said recesses correspond in dimension to said cooling fins for locating said cooling fins on said cooling plate. ### Claim 3 (depends on 1) The CPU cooling apparatus as defined in claim 1 further comprising a plurality of elastic fastening frames of an inverted U-shaped construction, said fastening frames comprising a horizontal arm and two vertical arms fastened with both ends of said horizontal arm such that said vertical arms are perpendicular to a longitudinal axis of said horizontal arm, said fastening frames being fastened with said cooling plate such that an underside of said horizontal arm is in contact with a top of each of said cooling fins, and that said two vertical arms are retained by both end surfaces of a longitudinal axis of said cooling fins, and further that a free end of each of said vertical arms is fastened with one side of said cooling plate. ### Claim 4 (depends on 3) The CPU cooling apparatus as defined in claim 3 wherein said one side of said cooling plate is provided with a retaining recess engageable with said free end of said vertical arms. ### Claim 5 (depends on 3) The CPU cooling apparatus as defined in claim 3, further comprising a cooling fan located immediately over said cooling fins and mounted on said horizontal arm of each of said fastening frames. ### Claim 6 (depends on 5) The CPU cooling apparatus as defined in claim 5, wherein said horizontal arm has a plurality of threaded holes engageable with fastening bolts for mounting said cooling fan on said horizontal arm. ### Claim 7 A CPU cooling apparatus comprising: an electrically-insulated metal cooling plate of a rectangular construction and having an underside which is attached to one surface of an integrated circuit chip for absorbing heat generated by said chip in operation; and two electrically-insulated metal cooling fins of a corrugated construction and mounted on an upper surface of said cooling plate such that said cooling fins are parallel to each other; wherein said upper surface of said cooling plate is provided with two recesses which are separated from each other at a predetermined interval such that said recesses extend from one side of said cooling plate to another side opposite to said one side of said cooling plate, said cooling plate further provided with an inner arresting edge and an outer arresting edge; wherein said cooling fins have a plurality of cooling ducts contiguous to one another and are received in said recesses such that two sides of each of said cooling fins are pressed against an inner side and an outer side of each of said recesses. ### Claim 8 (depends on 7) The CPU cooling apparatus as defined in claim 7, wherein said cooling fins have a plurality of ridges having a flat apex. ### Claim 9 (depends on 8) The CPU cooling apparatus as defined in claim 8, wherein said flat apex is provided with a plurality of cooling holes separated from one another at a predetermined interval. ### Claim 10 (depends on 7) The CPU cooling apparatus defined in claim 7 further comprising two fastening frames of an inverted U-shaped construction, said fastening frames comprising a horizontal arm and two vertical arms fastened with both ends of said horizontal arm such that said vertical arms are perpendicular to a longitudinal axis of said horizontal arm, said fastening flames being fastened with said cooling plate such that an underside of said horizontal arm is in contact with a top of each of said cooling fins, and that said vertical arms are retained by both end surfaces of a longitudinal axis of said cooling fins, and further that a free end of each of said vertical arms is fastened with one side of said cooling plate. ### Claim 11 (depends on 7) The CPU cooling apparatus as defined in claim 7, wherein said one side of said cooling plate is provided with a retaining recess engageable with said free end of said vertical arms. ### Claim 12 (depends on 10) The CPU cooling apparatus as defined in claim 10 further comprising a cooling fan located immediately over said cooling fins and mounted on said horizontal arm of each of said fastening frames. ### Claim 13 (depends on 12) The CPU cooling apparatus as defined in claim 12, wherein said horizontal arm has a plurality of threaded holes engageable with fastening bolts for mounting said cooling fan on said horizontal arm.