# US 2018/0023906 A1 · Passive heat exchanger valve > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0023906 A1 - Document ID: US20180023906A1 - Status: Published application - Kind: A1 - Application number: 15/213,931 - Filed: 2016-07-19 - Published: 2018-01-25 - Earliest claimed: 2016-07-19 - Assignees: Unison Industries, LLC - Applicants: Unison Industries, LLC - Inventors: Gordon Tajiri; Michael Thomas Kenworthy; Yanzhe Yang; Dattu GV Jonnalagadda - Web page: https://patentgrep.com/patent/US20180023906A1 ## CPC - F28F 27/02: for controlling the distribution of heat-exchange media between different channels ({static flow control means in header boxes F28F9/026}; arrangements of guide plates or guide vanes F28F9/22, F28F25/12) - F01D 25/12: Cooling - F02C 3/04: having a turbine driving a compressor (power transmission arrangements F02C7/36; control of working fluid flow F02C9/16) - F02C 7/14: of fluids in the plant {, e.g. lubricant or fuel (F02C7/185 takes precedence)} - F02C 7/18: the medium being gaseous, e.g. air {(F02C7/125 takes precedence)} - F02C 7/185: {Cooling means for reducing the temperature of the cooling air or gas} - F02C 9/18: by bleeding, bypassing or acting on variable working fluid interconnections between turbines or compressors or their stages {(F02C3/113 takes precedence)} - F02K 3/115: by means of indirect heat exchange - F16K 17/38: of excessive temperature - F16K 31/002: {actuated by temperature variation (thermo-electric F16K31/025)} - F16K 31/44: Mechanical actuating means - F05D 2260/213: by the provision of a heat exchanger within the cooling circuit - F05D 2300/505: Shape memory behaviour - Y02T 50/60: Efficient propulsion technologies, e.g. for aircraft - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00) - F02K: JET-PROPULSION PLANTS (features of jet-propulsion plants common to gas-turbine plants, air intakes or fuel supply control of air-breathing jet-propulsion plants F02C7/00, F02C9/00) - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} - 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 A valve and a heat exchanger apparatus for a gas turbine engine include a valve body having a valve seat and an actuation component including a plate formed from a set of metal layers and responsive to a change in at least one of a thermal condition and a pressure exerted thereon such that the plate moves and the valve moves between an opened and a closed position where a portion of the plate engages with the valve seat. ## Claims ### Claim 1 A valve, comprising: a valve body having a valve seat; and an actuation component including a plate formed from a set of metal layers responsive to a change in at least one of a thermal condition or a pressure exerted thereon such that the valve moves between an opened and a closed position where the plate engages with the valve seat. ### Claim 2 (depends on 1) The valve of claim 1 wherein the plate is mounted to the valve body at a first end and a second end of the plate defines a free end. ### Claim 3 (depends on 2) The valve of claim 2 wherein the plate comprises an extension at its free end that is configured to engage with the valve seat of the valve body. ### Claim 4 (depends on 3) The valve of claim 3 wherein the plate is configured to move the extension to the closed position in response to a predetermined temperature exerted thereon. ### Claim 5 (depends on 1) The valve of claim 1 wherein the plate includes a monolithic composite metal sheet. ### Claim 6 (depends on 1) The valve of claim 1 wherein the plate includes a bi-metal strip comprising a layer of aluminum alloy and a layer of aluminum silicon carbide. ### Claim 7 (depends on 6) The valve of claim 6 wherein the coefficient of thermal expansion for the layer of aluminum silicon carbide ranges from 20 ppm/C to 7 ppm/C. ### Claim 8 (depends on 1) The valve of claim 1 wherein the valve is incorporated in a heat exchanger. ### Claim 9 (depends on 8) The valve of claim 8 wherein the heat exchanger is an air-cooled oil cooler for a turbine engine. ### Claim 10 (depends on 1) The valve of claim 1 wherein the plate comprises two fixed ends and a central extension configured to engage the valve seat of the valve body. ### Claim 11 (depends on 1) The valve of claim 1 wherein the plate further comprises a secondary temperature controlled portion that is configured to allow bi-modal flows. ### Claim 12 (depends on 1) The valve of claim 1 wherein the valve is part of a cartridge assembly to retrofit existing valve systems. ### Claim 13 A heat exchanger apparatus for use in an oil cooling system of an aircraft engine comprising: an air-cooled oil cooler disposed in a bypass fan duct of the aircraft engine; and a valve, in fluid communication with the air-cooled oil cooler, the valve comprising: a valve body having a valve seat; and an actuation component including a plate formed from a set of metal layers and responsive to a change in at least one of a thermal condition and a pressure exerted thereon such that the plate moves and the valve moves between an opened and a closed position where the plate engages with the valve seat. ### Claim 14 (depends on 13) The heat exchanger apparatus of claim 13 wherein the actuation component is configured to move to the closed position in response to a predetermined temperature exerted thereon and to an open position in response to the predetermined temperature exerted thereon. ### Claim 15 (depends on 13) The heat exchanger apparatus of claim 13 wherein the plate is mounted to the valve body at a first end and a second end of the plate defines a free end. ### Claim 16 (depends on 13) The heat exchanger apparatus of claim 13 wherein the plate includes a strip with the set of metal layers. ### Claim 17 (depends on 13) The heat exchanger apparatus of claim 13 wherein the plate comprises two fixed ends and a central extension configured to engage the valve seat of the valve body. ### Claim 18 (depends on 13) The heat exchanger apparatus of claim 13 wherein the valve is configured to provide a bypass for at least a portion of a hot engine oil directed toward the air-cooled oil cooler and direct it back to an engine core prior to reaching the air-cooled oil cooler. ### Claim 19 A turbine engine, comprising: a core engine; and a heat exchanger apparatus comprising: an air-cooled oil cooler disposed in a bypass fan duct of the turbine engine; and a bypass valve, in fluid communication with the air-cooled oil cooler, the bypass valve comprising: a valve body having a valve seat; and an actuation component including a plate formed from a set of metal layers and responsive to a change in at least one of a thermal condition or a pressure exerted thereon such that the plate moves and the valve moves between an opened and a closed position where the plate engages with the valve seat; and wherein the valve is configured to provide a bypass for at least a portion of a hot engine oil directed toward the air-cooled oil cooler and direct it back to the engine core prior to reaching the air-cooled oil cooler. ### Claim 20 (depends on 19) The gas turbine engine of claim 19 wherein the plate is a strip formed from a set of metal layers. ### Claim 21 (depends on 19) The gas turbine engine of claim 19 wherein the plate curves and straightens based on thermal conditions.