Gaseous fuel and air mixing venturi insert device for carburetor
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01F-003/04
F02M-007/02
F02M-019/08
F02M-021/04
F02M-019/10
B01F-005/04
F02M-013/08
출원번호
US-0459009
(2014-08-13)
등록번호
US-9541033
(2017-01-10)
발명자
/ 주소
Yates, Kristian W.
출원인 / 주소
CONTINENTAL CONTROLS CORPORATION
대리인 / 주소
Procopio, Cory, Hargreaves & Savitch, LLP
인용정보
피인용 횟수 :
0인용 특허 :
11
초록▼
A gaseous fuel and air mixing venturi device is adapted for installation in a gaseous fuel carburetor and has a venturi body defining annular inner and outer venturi passageways which each have a throat of reduced cross-sectional area and have inlet ends in communication with an air inlet of the car
A gaseous fuel and air mixing venturi device is adapted for installation in a gaseous fuel carburetor and has a venturi body defining annular inner and outer venturi passageways which each have a throat of reduced cross-sectional area and have inlet ends in communication with an air inlet of the carburetor. A fuel inlet is configured for connection to a fuel port of the carburetor, and communicates with a plurality of fuel supply ports in the body communicating radially with the inner and outer venturi passages to mix with the air flowing in the passageways.
대표청구항▼
1. A gaseous fuel and air mixing venturi device for a gaseous fuel carburetor, comprising: a venturi body having at least two venturi passageways, each passageway having an air inlet end, an air-fuel mixture outlet end, and a venturi throat of reduced cross-sectional area;the venturi body being of p
1. A gaseous fuel and air mixing venturi device for a gaseous fuel carburetor, comprising: a venturi body having at least two venturi passageways, each passageway having an air inlet end, an air-fuel mixture outlet end, and a venturi throat of reduced cross-sectional area;the venturi body being of predetermined shape and dimensions adapted for seating engagement in a carburetor housing between the carburetor air inlet and air-fuel mixture outlet such that the air inlet ends of the venturi passageways communicate with the air inlet of the carburetor and the air-fuel mixture outlets of the venturi passageways communicate with the air fuel mixture outlet of the carburetor, the venturi body having a fuel inlet chamber with an inlet configured for communication with a gaseous fuel inlet port of the carburetor; andthe body having a plurality of fuel supply ports communicating with the fuel inlet chamber for supplying fuel to throat areas of the venturi passageways to mix with the air flowing in the venturi passageways. 2. The device of claim 1, wherein the venturi passageways comprise coaxial inner and outer venturi passageways. 3. The device of claim 2, wherein each venturi passageway is of annular cross-sectional shape and the fuel supply ports are located at spaced intervals around a periphery of each passageway to direct fuel radially into the passageway. 4. The device of claim 3, wherein the fuel supply ports are located at the venturi throat of each passageway. 5. The device of claim 2, wherein the venturi body comprises a central hub containing the fuel inlet chamber, an inner annular member secured to the central hub with an annular space between the inner annular member and the central hub comprising the inner venturi passageway, and an outer annular member secured to the inner annular member with an annular space between the inner and outer annular members comprising at least part of the outer venturi passageway. 6. The device of claim 5, wherein the inner annular member has an annular gas supply chamber, and at least two radial members extend between the central hub and annular gas supply chamber, each radial member having an internal passageway having inner and outer ends and communicating with the fuel inlet chamber at the inner end and with the annular gas supply chamber at the outer end, and the inner annular member having an inner wall having a ring of spaced first fuel supply ports configured to direct fuel from the gas supply chamber into the inner venturi passageway and an outer wall having a ring of spaced second supply ports configured to direct fuel from the gas supply chamber into the outer venturi passageway. 7. The device of claim 6, wherein the central hub has a ring of spaced third fuel supply ports configured to direct fuel from the inlet fuel chamber outwardly into the inner venturi passageway, whereby fuel is directed in both radially inward and outward directions into the inner venturi passageway. 8. The device of claim 6, wherein the first fuel supply ports are axially offset from the second fuel supply ports. 9. The device of claim 5, further comprising at least two spaced connecting portions between the inner and outer annular member defining a predetermined annular gap between the annular members forming part of the outer venturi passageway. 10. The device of claim 9, wherein the outer annular member comprises an annular rim configured for seating on an air-fuel mixer seating rim of an annular wall of the air-fuel mixing section of the carburetor, the outer venturi passageway having an inner annular wall comprising an outer wall of the inner annular member and an outer annular wall comprising the annular rim and part of the annular wall of the air-fuel mixing section of the carburetor. 11. The device of claim 1, wherein the venturi body has a central seat portion and an annular plate engaged over the seat portion and extending over the inlet end of the inner venturi passageway, the annular plate and seat portion being configured for engagement with a carburetor biasing spring extending between the annular plate and a cover plate of the carburetor, and the annular plate forming at least part of a passageway for air flow into the ends of the venturi passageways. 12. The device of claim 2, wherein the venturi body comprises a central hub portion, a first annular member surrounding the central hub portion, the inner venturi passageway comprising annular inner passageway between the central hub portion and first annular member, and a second annular member surrounding the first annular member to define at least an inlet end of the outer venturi passageway between the first and second annular members. 13. The device of claim 12, wherein the first annular member has an internal annular fuel supply chamber having a plurality of inwardly directed fuel outlets and outwardly directed fuel outlets for supplying fuel in a radial direction to the throat portions of the inner and outer venturi passageways, respectively. 14. The device of claim 13, wherein the hub portion contains the fuel inlet chamber and has a plurality of fuel outlets spaced around the periphery of the fuel inlet chamber and configured to supply fuel radially outwardly from the fuel inlet chamber to the throat portion of the inner venturi passageway. 15. A gaseous fuel and air mixing venturi device for a gaseous fuel carburetor, comprising: a venturi body having at least one venturi passageway having an air inlet end, an air-fuel mixture outlet end, and a venturi throat of reduced cross-sectional area;the venturi body being of predetermined shape and dimensions adapted for seating engagement in a carburetor housing between the carburetor air inlet and air-fuel mixture outlet such that the air inlet end of the venturi passageway communicates with the air inlet of the carburetor and the air-fuel mixture outlet of the venturi passageway communicates with the air fuel mixture outlet of the carburetor, the venturi body having a fuel inlet chamber with an inlet configured for communication with a gaseous fuel inlet port of the carburetor;the body having a plurality of fuel supply ports communicating with the fuel inlet chamber for supplying fuel in a radial direction only to throat area of the venturi passageway to mix with the air flowing in the venturi passageway; andwherein the venturi body comprises a central hub containing the fuel inlet chamber, and an annular member secured to the central hub with an annular space between the annular member and the central hub defining the venturi passageway, the annular member having an annular gas supply chamber communicating with the fuel inlet chamber, the central hub having a first ring of spaced fuel supply ports spaced around the hub for directing fuel radially outward from fuel inlet chamber into the venturi passageway, and the annular member having an inner wall having a second ring of spaced fuel supply ports configured for directing fuel radially inward from the annular gas supply chamber into the inner venturi passageway. 16. A method of retrofitting a carburetor with an air-fuel mixing venturi insert device, comprising: removing an existing cover plate and air-fuel mixing device from a carburetor to leave a cavity and expose at least one air-fuel mixer seating rim of the carburetor;placing an air-fuel mixing venturi insert device having at least two annular venturi passageways into the cavity left by removal of the prior air-fuel mixing device, with a fuel inlet port of the air-fuel mixing venturi insert device aligned with a fuel inlet port of the carburetor and an outer rim of the air-fuel mixing venturi insert device aligned and engaged with the air-fuel mixer seating rim of the carburetor; andre-attaching the existing cover plate to the carburetor over the air-fuel mixing venturi insert device with a biasing spring acting extending between a spring seat on the inner surface of the cover and a spring seating recess at the end of the air-fuel mixing venturi insert device.
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이 특허에 인용된 특허 (11)
Brown William J. (Whatcom County WA), Apparatus for converting a carburetor for gaseous fuel.
Greenway Donald O. (6275 Georgia Hwy. 85 Riverdale GA 30274) Davis Frank J. (6275 Georgia Hwy. 85 Riverdale GA 30274), Natural gas and air mixing device.
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