# US 8,784,058 B2 · Engine cooling fan having dynamic unbalance compensation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,784,058 B2 - Document ID: US8784058B2 - Status: Granted - Kind: B2 - Application number: 13/062,739 - Filed: 2009-07-08 - Published: 2011-09-29 - Granted: 2014-07-22 - Earliest claimed: 2008-09-08 - Assignees: Robert Bosch GmbH - Applicants: Tobias Schneider; Markus Liedel; Thomas Helming; Heidrun Schied - Inventors: Tobias Schneider; Markus Liedel; Thomas Helming; Heidrun Schied - Web page: https://patentgrep.com/patent/US8784058B2 ## CPC - F04D 29/662: {Balancing of rotors (compensating imbalance G01M1/36)} - F01P 5/02: Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers - F04D 29/329: {Details of the hub} - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - F01P: COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (arrangements in connection with cooling of propulsion units in vehicles B60K11/00; heat-transfer, heat-exchange or heat-storage materials C09K5/00; {cooling of gas-turbine engines F02C7/12}; heat exchange in general, radiators F28) ## Abstract The invention relates to an engine fan device for a vehicle, characterized in that the engine fan device (10) has at least one or more receiving contours (24, 30, 50), in which one or more balancing elements (28) can be received, wherein at least one receiving contour (24) has at least two planes (26), and/or wherein at least two receiving contours (24) each have at least one plane (26), wherein both planes (26) are different from each other. ## Claims ### Claim 1 An engine fan device for a vehicle, characterized in that the engine fan device (10) has one or more mounting contours (24, 30, 50) in which one or more balancing elements (28) are mounted, the one or more mounting contours (24, 30, 50) forming two planes (26) that are different from one another, the one or more balancing elements (28) being mounted to the one or more mounting contours (24, 30, 50) along the two planes (26) such that the one or more balancing elements (28) do not move relative to the one or more mounting contours (24, 30, 50). ### Claim 2 (depends on 1) The engine fan device as claimed in claim 1, characterized in that the one or more mounting contours (24) are embodied in the form of at least one or more grooves (30) that run around at least a portion of a circumference of the fan device. ### Claim 3 (depends on 1) The engine fan device as claimed in claim 1, characterized in that the two planes (26) are planes of rotation. ### Claim 4 (depends on 1) The engine fan device as claimed in claim 1, characterized in that one of the one or more mounting contours (24) is arranged in a hub area (18) of a fan appliance (12) of the engine fan device (10) and one of the one or more mounting contours (24) is arranged on an outside (46) of a fan wheel (16) of the fan appliance (12) and one of the one or more mounting contours (24) is arranged adjoining the hub area (18) and one of the one or more mounting contours (24) is arranged at an outer end of a blade element (14). ### Claim 5 (depends on 1) The engine fan device as claimed in claim 1, characterized in that one of the one or more mounting contours (24) is in the form of a groove (30) that runs around at least a portion of a circumference of the fan device, the groove (30) being divided by one or more ribs (36) in order to form one or more chambers (38) in which the one or more balancing elements (28) are mounted. ### Claim 6 (depends on 1) The engine fan device as claimed in claim 1, characterized in that the one or more mounting contours (24, 30, 50) includes multiple mounting contours (24) in the form of grooves (30) arranged in a circle around an axis of rotation (34), the multiple mounting contours (24) comprising chambers (38) in which the at least one or more balancing elements (28) are mounted. ### Claim 7 (depends on 1) The engine fan device as claimed in claim 1, characterized in that a fan appliance (12) of the engine fan device (10) comprises at least one or more blade elements (14), at least one of the blade elements (14) having openings (50) in which at least one of the one or more balancing element (28) is mounted. ### Claim 8 (depends on 1) The engine fan device as claimed in claim 1, characterized in that the one or more balancing elements (28) are selected from a group consisting of a spherical element (58), a rivet element (52), a mushroom-shaped element (54) a pin element (56) or a cylindrical element, an expanding spring element (62), a rectangular block element (60) and a casting compound (64). ### Claim 9 (depends on 8) The engine fan device as claimed in claim 8, wherein the one or more mounting contours (24) is selected from a group consisting of a groove (30) and an opening (50). ### Claim 10 (depends on 8) The engine fan device as claimed in claim 8, wherein the one or more mounting contours (24) is an opening (50) of circular design. ### Claim 11 (depends on 1) The engine fan device as claimed in claim 1, characterized in that one of the one or more balancing elements (28) is externally clamped and fixed thereby to the one or more mounting contours (24, 30, 50). ### Claim 12 (depends on 1) The engine fan device as claimed in claim 1, characterized in that two of the one or more balancing elements (28) are of different design in respect of their shape, dimensions, weight and/or material. ### Claim 13 (depends on 12) The engine fan device as claimed in claim 12, wherein the one or more balancing elements (28) is made of metal or metallic. ### Claim 14 (depends on 12) The engine fan device as claimed in claim 12, wherein the one or more balancing elements (28) is metallic, having a metal content of 25 to 100% by weight. ### Claim 15 (depends on 1) The engine fan device as claimed in claim 1, wherein the engine fan device has an axis of rotation, and the two planes (26) are perpendicular to the axis of rotation. ### Claim 16 (depends on 1) The engine fan device as claimed in claim 1, characterized in that the two planes (26) are planes of rotation and the one or more mounting contours (24) are arranged concentrically around an axis of rotation (34) of the engine fan device (10). ### Claim 17 (depends on 1) The engine fan device as claimed in claim 1, wherein the one or more balancing elements (28) are mounted to the one or more mounting contours (24, 30, 50) with adhesive. ### Claim 18 (depends on 1) The engine fan device as claimed in claim 1, wherein the engine fan includes three mounting contours (24, 30) forming three planes (26), each of the three planes (26) being different, the one or more balancing elements (28) being mounted to the three mounting contours (24, 30) along the three planes (26). ### Claim 19 (depends on 18) The engine fan device of claim 18, wherein one of the one or more mounting contours (30) is disposed at an inner end (40) of a blade element (14). ### Claim 20 (depends on 1) The engine fan device of claim 1, wherein one of the mounting contours (30) is open in a first direction, and two of the other mounting contours (24) are open in an opposite direction. ### Claim 21 (depends on 1) The engine fan device of claim 1, wherein the two planes (26) are fixed axially. ### Claim 22 (depends on 1) The engine fan device of claim 1, wherein the two planes (26) are stationary relative to a hub area (18).