# US 12,120,842 B2 · Air duct with one or more fins > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,120,842 B2 - Document ID: US12120842B2 - Status: Granted - Kind: B2 - Application number: 17/829,869 - Filed: 2022-06-01 - Published: 2023-12-07 - Granted: 2024-10-15 - Earliest claimed: 2022-06-01 - Assignees: Quanta Computer Inc. - Applicants: Quanta Computer Inc. - Inventors: Chao-Jung Chen; Herman Tan; Tien-Juei Chuang; Chieh-Ling Chang - Web page: https://patentgrep.com/patent/US12120842B2 ## CPC - H05K 7/20145: {Means for directing air flow, e.g. ducts, deflectors, plenum or guides} - H05K 7/20727: {within server blades for removing heat from heat source} - H05K 7/20209: {Thermal management, e.g. fan control} - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract An air duct is disclosed. The air duct includes a housing for directing air over a plurality of slots within a computer system. The housing includes side housing walls and a top housing wall. The side housing walls are respectively connected to opposing ends of the top housing wall. The side housing walls extend in the same direction from the top housing wall. The air duct further includes a plurality of fins extending from the top housing wall in the same direction as the side housing walls. Each fin of the plurality of fins is arranged on the top housing wall so as to be positioned between adjacent slots of the plurality of slots when the housing is located within the computer system. ## Claims ### Claim 1 An air duct comprising: a housing for directing air over a plurality of slots within a computer system, the housing including side housing walls and a top housing wall, the side housing walls being respectively connected to opposing ends of the top housing wall, the side housing walls extending in the same direction from the top housing wall; and a plurality of fins extending from the top housing wall in the same direction as the side housing walls, each fin of the plurality of fins being arranged on the top housing wall so as to be positioned between adjacent slots of the plurality of slots when the housing is located within the computer system, wherein each fin of the plurality of fins is a quadrilateral with a declined front edge and includes a projection extending down from a bottom of the fin. ### Claim 2 (depends on 1) The air duct of claim 1, wherein each fin of the plurality of fins is about 1 millimeters (mm) to about 2 mm thick. ### Claim 3 (depends on 2) The air duct of claim 2, wherein each fin of the plurality of fins is 2 mm thick. ### Claim 4 (depends on 1) The air duct of claim 1, wherein each fin of the plurality of fins is about 35 mm to about 95 mm long. ### Claim 5 (depends on 4) The air duct of claim 4, wherein each fin of the plurality of fins is 74.35 mm long. ### Claim 6 (depends on 1) The air duct of claim 1, wherein each fin of the plurality of fins is about 10 mm to about 40 mm tall. ### Claim 7 (depends on 6) The air duct of claim 6, wherein each fin of the plurality of fins is 15.4 mm tall. ### Claim 8 (depends on 1) The air duct of claim 1, wherein the top housing wall includes a declined portion at a front of the air duct, and the plurality of fins extend from the top housing wall starting from behind the declined portion. ### Claim 9 A computer system comprising: a chassis having a front, a back, two side chassis walls, and a bottom chassis wall; a board connected to the bottom chassis wall, the board having a plurality of slots facing up from the bottom chassis wall, each slot of the plurality of slots accepting a component; and an air duct connected to the board and positioned over the plurality of slots, the air duct including: a housing for directing air over the plurality of slots, the housing including side housing walls that connect the air duct to the board and a top housing wall connected to and extending between the side housing walls; and a plurality of fins extending from the top housing wall towards the plurality of slots, each fin of the plurality of fins being arranged on the top housing wall such that each component accepted in the plurality of slots is positioned between adjacent fins of the plurality of fins, wherein each fin of the plurality of fins is a quadrilateral with a declined front edge and includes a projection extending down from a bottom of the fin. ### Claim 10 (depends on 9) The computer system of claim 9, further comprising a plurality of components connected to the plurality of slots, wherein the projection of each fin of the plurality of fins vertically aligns to be adjacent to a hottest portion of each component of the plurality of components. ### Claim 11 (depends on 9) The computer system of claim 9, wherein each fin of the plurality of fins is about 1 mm to 3 mm thick. ### Claim 12 (depends on 11) The computer system of claim 11, wherein a pitch between adjacent slots of the plurality of slots is about 6 mm to about 10 mm. ### Claim 13 (depends on 12) The computer system of claim 12, wherein the pitch between the adjacent slots of the plurality of slots is 7.54 mm and each fin of the plurality of fins is 2 mm thick. ### Claim 14 (depends on 13) The computer system of claim 13, wherein each fin of the plurality of fins is about 35 to 95 mm long. ### Claim 15 (depends on 14) The computer system of claim 14, wherein each fin of the plurality of fins is about 10 to 40 mm tall. ### Claim 16 (depends on 11) The computer system of claim 11, wherein the top housing wall includes a declined portion at a front of the air duct, and the plurality of fins extend from the top housing wall starting from behind the declined portion.