当前申请(专利权)人：
WOODWARD, INC. | DAM, BIDHAN | CROSBY, MOWGLI | SARKER, SUDIPA
原始申请(专利权)人：
WOODWARD, INC. | DAM, BIDHAN | CROSBY, MOWGLI | SARKER, SUDIPA
当前申请(专利权)人地址：
1081 Woodward Way,Fort Collins, Colorado 80524 US | 700 North Centennial Street,Zeeland, Michigan 49464 US
发明人：
DAM, BIDHAN | CROSBY, MOWGLI | SARKER, SUDIPA
摘要：
A multiphase fuel injector has an injector body with a fuel inlet at a first end and a fuel outlet at a second end opposite the first end. A primary circuit disposed proximate the fuel inlet extends into a central portion of the injector body. The primary circuit is configured to receive a first flow of pressurized fuel from the fuel inlet that discharges into a spin chamber in the injector body downstream from the fuel inlet. The primary circuit is configured to impart a swirling action to the first flow of pressurized fuel. A secondary circuit is located in the injector body radially outward from the primary circuit. The secondary circuit is configured to receive a second flow of pressurized fuel from the fuel inlet that discharges into the fuel outlet. The secondary circuit is configured to impart a swirling action to the second flow of pressurized fuel.
权利要求：
WHAT IS CLAIMED IS:
1 . A multiphase fuel injector, comprising: an injector body having a fuel inlet at a first end of the injector body and a fuel outlet at a second end of the injector body opposite the first end; a primary circuit disposed proximate the fuel inlet and extending into a central portion of the injector body, the primary circuit configured to receive a first flow of pressurized fuel from the fuel inlet and discharge the fuel into a spin chamber located in the injector body dow nstream from the fuel inlet, the primary circuit configured to impart a swirling action to the first flow of pressurized fuel; a secondary circuit located in the injector body radially outward from the primary circuit, the secondary circuit configured to receive a second flow' of pressurized fuel from the fuel inlet and discharge the fuel into the fuel outlet, the secondary circuit configured to impart a swirling action to the second flow of pressurized fuel.
2. The multiphase fuel injector of claim 1, wherein the primary circuit includes a flow plate attached to a biasing spring, wherein the flow' plate blocks fuel from flowing into the secondary circuit when the biasing spring is fully extended, and allows fuel to flow' into the secondary circuit when the biasing spring is compressed.
3. The multiphase fuel injector of claim 2, wherein the biasing spring is configured such that the primary circuit facilitates ignition of fuel at a flow rate of less than 50 pounds per hour (PPH).
4. The multiphase fuel injector of claim 2, wherein the biasing spring is configured such that the primary and secondary circuits together facilitate a maximum fuel flow' rate greater than 6,000 pounds per hour (PPH).
5. The multiphase fuel injector of claim 1, wherein the primary circuit includes one or more helical primary openings formed in the inj ector body, the one or more helical primary' openings configured to direct the first flow' of pressurized fuel in the primary' circuit to the spin chamber and to impart a sw irling motion to the first flow' of pressurized fuel.
6. The multiphase fuel injector of claim 5, wherein the secondary' circuit includes one or more helical secondary' openings formed in the injector body, the one or
more helical secondary openings configured to direct the second flow of pressurized fuel to the fuel outlet and to impart a swirling motion to the second flow of pressurized fuel.
7. The multiphase fuel injector of claim 6, wherein the secondary circuit includes one or more helical secondary openings are located radially outward from the one or more helical primary openings.
8. The multiphase fuel injector of claim 1, wherein the primary circuit includes a fuel swirler inserted into an opening in the injector body, the fuel swirler having one or more helical grooves in an exterior surface of the fuel swirler, the fuel swirler being configured to impart a swirling motion to fuel flowing through the primary circuit.
9. A method of making a multiphase fuel injector, the method comprising the steps of: using additive manufacturing to construct an injector body, wherein using additive manufacturing to construct the injector body comprises constructing the injector body to include: a fuel inlet at a first end of the injector body and a fuel outlet at a second end of the injector body opposite the first end; a primary circuit disposed within the injector body proximate the fuel inlet, and extending into a central portion of the injector body, the primary circuit having one or more helical primary openings formed in the injector body, the one or more helical primary openings configured to direct a first flow of pressurized fuel to a spin chamber and to impart a swirling motion to the first flow of pressurized fuel; and a secondary circuit located within the injector body and positioned radially outward from the primary circuit, the secondary circuit having one or more helical secondary openings formed in the injector body, the one or more helical secondary openings configured to direct a second flow of pressurized fuel toward a fuel outlet and to impart a swirling action to the second flow of pressurized fuel.
10. The method of claim 9, further comprising inserting a flow plate and spring into an opening within the injector, the flow plate abutting the biasing spring, wherein the flow plate blocks fuel from flowing into the secondary circuit when the biasing spring is fully extended, and allows fuel to flow into the secondary circuit when the biasing spring is compressed.
11. A method of making a multiphase fuel injector, the method comprising the steps of: using additive manufacturing to construct an injector body, wherein using additive manufacturing to construct the injector body comprises constructing the injector body to include: a fuel inlet at a first end of the injector body and a fuel outlet at a second end of the injector body opposite the first end; a primary circuit disposed within the injector body proximate the fuel inlet, and extending into a central portion of the injector body, the primary circuit having a fuel swirler disposed in an opening within the injector body, the fuel swirler configured to direct a first flow of pressurized fuel to a spin chamber and to impart a swirling motion to the first flow of pressurized fuel; and a secondary circuit located within the injector body and positioned radially outward from the primary7circuit, the secondary circuit having one or more helical secondary openings formed in the injector body, the one or more helical secondary openings configured to direct a second flow of pressurized fuel toward a fuel outlet and to impart a swirling action to the second flow of pressurized fuel.
12. The method of claim 1 1 , wherein the fuel swirler is cylindrical with helical grooves formed in an exterior surface of the fuel swirler.