# US 2014/0150399 A1 · Diverter damper > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0150399 A1 - Document ID: US20140150399A1 - Status: Published application - Kind: A1 - Application number: 14/232,157 - Filed: 2012-07-12 - Published: 2014-06-05 - Earliest claimed: 2011-07-13 - Assignees: Global Power Netherlands B.V. - Inventors: Wolfgang Schawag; Arthur Joseph Hendrikus Franciscus Knoors; Frank Willems - Web page: https://patentgrep.com/patent/US20140150399A1 ## CPC - F01D 25/30: Exhaust heads, chambers, or the like - B23P 11/00: Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for (connecting sheet metal or metal tubes, rods or profiles B21D39/00; riveting B21J; soldering, unsoldering, welding B23K; hand tools for connecting wire or strip B25B25/00; connecting metal parts by adhesives F16B11/00) - F02C 7/08: Heating air supply before combustion, e.g. by exhaust gases - F16K 11/052: with pivoted closure members, e.g. butterfly valves - F16K 31/52: with crank, eccentric, or cam - F23L 11/00: Arrangements of valves or dampers after the fire - Y10T 29/49323: Assembling fluid flow directing devices, e.g., stators, diaphragms, nozzles - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q) - 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) - 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)} - F23L: SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ({air-supply arrangements for fluent fuels F23C;} firebridges with means for feeding air or steam F23M3/04; baffles or shields with air supply passages F23M9/04); VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS {(dampers and throat restrictors for open fire-places F24; air inlet valves for open fire fronts F24)}; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The invention relates to a diverter damper for controlling a gas flow in a gas duct of large cross section, said diverter damper comprising:—a housing having an inlet and two outlets,—a pivotable flap which in a first extreme position closes a first outlet and in a second extreme position closes a second outlet,—a drive shaft connected to the pivotable flap, wherein the drive shaft extends at least partly between two opposite housing walls and through at least one of the two opposite housing walls,—at least one actuator mechanism that is located outside the housing near or against the at least one housing wall through which the drive shaft extends, wherein said actuator mechanism comprises at least one cylinder piston unit connected to said drive shaft for pivoting the flap into one of the extreme positions or into a position between the extreme positions. ## Claims ### Claim 1 A diverter damper for controlling a gas flow in a gas duct of large cross section, said diverter damper comprising: a housing having an inlet and two outlets, a pivotable flap which in a first extreme position closes a first outlet and in a second extreme position closes a second outlet, a drive shaft connected to the pivotable flap, wherein the drive shaft extends at least partly between two opposite housing walls and through at least one of the two opposite housing walls, at least one actuator mechanism that is located outside the housing near or against the at least one housing wall through which the drive shaft extends, wherein said actuator mechanism comprises at least one cylinder piston unit connected to said drive shaft for pivoting the flap into one of the extreme positions or into a position between the extreme positions, characterized in that said drive shaft comprises at least one hollow actuator pipe end part, said actuator pipe end part extends through the at least one housing wall such that said actuator pipe end part is located both inside the housing where said actuator pipe end part is connected to the flap and outside the housing where the actuator pipe end part is connected to the at least one cylinder piston unit. ### Claim 2 (depends on 1) A diverter damper according to claim 1 , wherein said drive shaft comprises two spaced apart, substantially identically dimensioned and substantially identically hollow actuator pipe end parts having a common virtual centre axis, each actuator pipe end part extending through one of the two opposite housing walls. ### Claim 3 (depends on 2) A diverter damper according to claim 2, wherein the end parts of the actuator pipe are connected with each other by means of at least one middle actuator pipe section such that a single hollow actuator pipe with a substantially uniform diameter and uniform wall thickness is provided. ### Claim 4 (depends on 1) A diverter damper according to claim 1, wherein the actuator pipe end part inside the housing is connected to the flap by means of levers configured in an elbow construction. ### Claim 5 (depends on 1) A diverter damper according to claim 1, wherein outside the housing the end part or end parts of the actuator pipe comprise at least one, preferably at least two, connection flanges for providing a connection between the actuator pipe and the at least one cylinder piston unit, which connection flanges are in one-piece with the actuator pipe end part or end parts. ### Claim 6 (depends on 1) A diverter damper according to claim 1, wherein the actuator mechanism comprises further a first frame and a second frame, wherein the second frame comprises two second frame parts between which the first frame is located. ### Claim 7 (depends on 6) A diverter damper according to claim 6, wherein the first frame is composed of the at least one connection flanges, which first frame is pivotally mounted directly to at least one piston rod of the cylinder piston unit for rotating the end part of the actuator pipe. ### Claim 8 (depends on 7) A diverter damper according to claim 7, wherein each second frame part is connected by means of one sleeve bearing to the end part of the actuator pipe. ### Claim 9 (depends on 6) A diverter damper according to claim 6, wherein the two second frame parts are connected to a cylinder barrel of the cylinder piston unit, which cylinder barrels are supported pivotally about a pivot axis by means of at least one external support. ### Claim 10 (depends on 4) A diverter damper according to claim 4, wherein each actuator pipe end part inside the housing is provided with connection means to be connected to one of the levers, which connection means are formed in one-piece with the actuator pipe end part. ### Claim 11 (depends on 4) A diverter damper according to claim 4, wherein one of the levers is formed in one piece with the actuator pipe end part. ### Claim 12 (depends on 1) A diverter damper according to claim 1, wherein the at least one hollow actuator pipe end part is provided at least partly with insulation located inside the hollow pipe end part. ### Claim 13 (depends on 12) A diverter damper according to claim 12, wherein the insulation has a shape having a diameter corresponding approximately to the inner diameter of the hollow pipe end part for in use blocking heat from the part of the hollow pipe end part located inside the housing to the part of the hollow pipe end part located outside the housing. ### Claim 14 (depends on 1) A diverter damper according to claim 1, wherein the at least one housing wall through which said actuator pipe end part extends, comprises a smaller wall part which is manufactured as one whole with the drive shaft, which smaller wall part is connected on the building site to a larger wall of the at least one housing wall part. ### Claim 15 (depends on 1) Method for building a diverter damper according to claim 1, wherein at least on of each wall of the opposite housing walls comprises a smaller wall part, through which smaller wall part the actuator pipe end part extends, wherein the method comprises the step of welding each smaller wall part to a larger wall part of said housing wall for positioning the actuator mechanism including the actuator pipe end parts on the building site. ### Claim 16 (depends on 1) Use of a diverter damper according to claim 1.