# US 9,429,168 B2 · Fan and frame thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,429,168 B2 - Document ID: US9429168B2 - Status: Granted - Kind: B2 - Application number: 12/109,910 - Filed: 2008-04-25 - Published: 2008-11-27 - Granted: 2016-08-30 - Earliest claimed: 2007-05-25 - Assignees: Delta Electronics, Inc. - Applicants: Chia-Ming Hsu; Shun-Chen Chang - Inventors: Chia-Ming Hsu; Shun-Chen Chang - Web page: https://patentgrep.com/patent/US9429168B2 ## CPC - F04D 29/542: {Bladed diffusers (fixing blades to stators F01D9/042)} - F04D 25/0613: {the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator} - F04D 29/544: {Blade shapes} - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) ## Abstract A fan includes a frame and an impeller. The frame includes a main body, a plurality of guiding elements and a motor base. The main body has an airflow inlet and an airflow outlet. The guiding elements are disposed in the main body and located at the airflow outlet, wherein each of the guiding elements includes an inclined part and an axial extended part, and the inclined par meets the axial extended part at an angle. The motor base connects to the main body. The impeller is disposed on the motor base for providing an airflow, wherein the guiding elements guide the airflow away from the fan. ## Claims ### Claim 1 A frame, comprising: a main body having an airflow inlet and an airflow outlet; and a plurality of guiding elements disposed in the main body and located at the airflow outlet, wherein each of the guiding elements comprises an inclined part and an axial extended part, and the inclined part meets the axial extended part at an angle; wherein the inclined part has a first height, the axial extended part has a second height, and a ratio of the first height to the second height is between 0.2 and 5; wherein the axial extended part of each of the guiding elements guides airflow away from the frame in a direction perpendicular to a radial direction of the airflow outlet, and the axial extended part is parallel to a vertical direction of the airflow outlet, and wherein the sum of the first height and the second height exceeds 15 millimeters when the frame is sized as 38×38 millimeters. ### Claim 2 (depends on 1) The frame as claimed in claim 1, wherein the angle is between 20 degrees and 50degrees. ### Claim 3 (depends on 1) The frame as claimed in claim 1, wherein the axial extended part is parallel to a vertical direction of the frame or the axial extended part inclines to the axis of the frame by an clipping angle which is smaller than or equal to 20 degrees. ### Claim 4 (depends on 1) The frame as claimed in claim 1, wherein a cross-section of the inclined part is wing shaped, arc-shaped or streamline-shaped. ### Claim 5 (depends on 1) The frame as claimed in claim 1, wherein the inclined part and the axial extended part are integrally formed as a single piece. ### Claim 6 (depends on 1) The frame as claimed in claim 1, wherein the inclined part and the axial extended part are different components and combined to form the guiding element. ### Claim 7 (depends on 1) The frame as claimed in claim 1, further comprising a motor base connected to the main body via the guiding elements, and wherein the motor base has at least one protruding rib inside the motor base. ### Claim 8 (depends on 1) The frame as claimed in claim 1, wherein the main body is substantially rectangular, rounded, elliptic, polygonal or cone-shaped. ### Claim 9 A fan, comprising: a frame, comprising: a main body having an airflow inlet and an airflow outlet; a plurality of guiding elements disposed in the main body and located at the airflow outlet; a motor base connected to the main body; and an impeller disposed on the motor base for providing airflow; wherein each of the guiding elements comprises an inclined part and an axial extended part, the inclined part meets the axial extended part at an angle, the inclined part has a first height, the axial extended part has a second height, and a ratio of the first height to the second height is between 0.2 and 5, and the axial extended part of each of the guiding elements guides the airflow away from the fan in a direction perpendicular to a radial direction of the airflow outlet, and the axial extended part is parallel to a vertical direction of the airflow outlet, and wherein the sum of the first height and the second height exceeds 15 millimeters when the frame is sized as 38×38 millimeters. ### Claim 10 (depends on 9) The fan as claimed in claim 9, wherein the angle is between 20 degrees and 50 degrees. ### Claim 11 (depends on 9) The fan as claimed in claim 9, wherein the axial extended part is parallel to a vertical direction of the frame or the axial extended part inclines to the axis of the frame by a clipping angle which is smaller than or equal to 20 degrees. ### Claim 12 (depends on 9) The fan as claimed in claim 9, wherein a cross-section of the inclined part is wing shaped, arc-shaped or streamline-shaped. ### Claim 13 (depends on 9) The fan as claimed in claim 9, wherein the inclined part and the axial extended part are integrally formed as a single piece. ### Claim 14 (depends on 9) The fan as claimed in claim 9, wherein the inclined part and the axial extended part are different components and combined to form the guiding element. ### Claim 15 (depends on 9) The fan as claimed in claim 9, wherein the main body is substantially rectangular, rounded, elliptic, polygonal or cone-shaped.