# US 10,865,651 B2 · Sealing assembly for a fluid kinetic machine, method for producing a sealing assembly as well as fluid kinetic machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,865,651 B2 - Document ID: US10865651B2 - Status: Granted - Kind: B2 - Application number: 16/183,357 - Filed: 2018-11-07 - Published: 2019-05-09 - Granted: 2020-12-15 - Earliest claimed: 2017-11-09 - Assignees: MTU Aero Engines AG; Almecon Technologie GmbH - Applicants: MTU Aero Engines AG; Almecon Technologie GmbH - Inventors: Markus Schlemmer; Klaus Pirker; Ralph Kropp; Lorenz Vinke; Waldemar Wiebe - Web page: https://patentgrep.com/patent/US10865651B2 ## CPC - F01D 11/001: {for sealing space between stator blade and rotor} - F01D 11/003: {by packing rings; Mechanical seals} - F16J 15/444: {with facing materials having honeycomb-like structure} - F05D 2230/234: Laser welding - F05D 2230/54: by sheet metal manufacturing - F05D 2240/55: Seals - F05D 2240/56: Brush seals - F05D 2250/283: honeycomb - F05D 2250/75: given by its similarity to a letter, e.g. T-shaped - Y02T 50/60: Efficient propulsion technologies, e.g. for aircraft - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F16J: PISTONS {(specially adapted for dampers F16F9/32)}; CYLINDERS; SEALINGS - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract The invention relates to a sealing assembly for a fluid kinetic machine, in particular for an aircraft engine, for sealing a radial gap between a rotor and a stator, including at least one sealing support for retaining and/or fixing at least one sealing element, wherein the sealing support includes a first and a second radial web extending in a radial extension direction as well as an axial web extending in an axial extension direction, firmly bonded to the radial webs, and the radial webs form a receptacle for receiving an element of the stator. Therein, the radial webs are formed as sheet elements formed elongated in radial direction, wherein a radially interior end of the radial webs is respectively firmly bonded, in particular welded, to a radially exterior surface of the axial web. ## Claims ### Claim 1 A sealing assembly for an aircraft engine, for sealing a radial gap between a rotor and a stator, including at least one sealing support for retaining and/or fixing at least one sealing element, wherein each sealing support includes a first and a second radial web extending in a radial extension direction as well as an axial web extending in an axial extension direction, firmly bonded to the radial webs, and the radial webs form a receptacle for receiving an element of the stator, wherein the radial webs are formed as flat sheet elements formed elongated in the radial direction, wherein a radially interior, non-bent end of the radial webs is respectively firmly bonded to a radially exterior surface of the axial web edge to edge. ### Claim 2 (depends on 1) The sealing assembly according to claim 1, wherein the radial webs are welded to the radially exterior surface of the axial web. ### Claim 3 (depends on 2) The sealing assembly according to claim 2, wherein the welding is effected by a laser. ### Claim 4 (depends on 2) The sealing assembly according to claim 2, wherein the welding is performed in a direction, which is inclined to the radial and axial direction of a fluid kinetic machine and the sealing support, respectively, at an angle between 30° and 60°, preferably 115°. ### Claim 5 (depends on 1) The sealing assembly according to claim 1, wherein the axial web is formed as a sheet element. ### Claim 6 (depends on 1) The sealing assembly according to claim 1, wherein the sealing support is T-shaped such that the axial web extends beyond a connection area between the radial webs and the axial web on both sides in the axial direction. ### Claim 7 (depends on 1) The sealing assembly according to claim 1, wherein an axially extending outer flange is formed at a radially outer end of at least one of the radially extending radial webs. ### Claim 8 (depends on 1) The sealing assembly according to claim 1, wherein the sealing assembly includes a front ring or a front ring segment and/or a rear ring and/or a rear ring segment viewed in a flow direction, wherein the front ring or the front ring segment is connected to the first radial web and/or the rear ring or the rear ring segment is connected to the second radial web in a force-fit and/or firmly bonded manner. ### Claim 9 (depends on 8) The sealing assembly according to claim 8, wherein the front ring or the front ring segment and/or the rear ring or the rear ring segment are formed as sheet elements. ### Claim 10 (depends on 1) The sealing assembly according to claim 1, wherein the element of the stator is a blade foot or a blade foot segment of a guide blade ring, a guide blade ring segment or a guide blade of a fluid kinetic machine. ### Claim 11 (depends on 1) The sealing assembly according to claim 1, wherein at least one slide stone is arranged between the radial webs and connected to them by at least one axial bolt. ### Claim 12 (depends on 1) The sealing assembly according to claim 1, wherein the sealing element is formed as a honeycomb or brush seal. ### Claim 13 (depends on 1) The sealing assembly according to claim 1, wherein the sealing assembly is a static inner air seal ring or a ring segment thereof. ### Claim 14 (depends on 1) The sealing assembly according to claim 1, wherein the axial web is formed as a sheet element. ### Claim 15 (depends on 1) The sealing assembly according to claim 1, wherein at least one sealing assembly is configured and arranged in a fluid kinetic machine.