[go: up one dir, main page]

WO2001040110A1 - Appareil et procede de fermeture de distributeur de carburant, dans lesquels un venturi variable est utilise - Google Patents

Appareil et procede de fermeture de distributeur de carburant, dans lesquels un venturi variable est utilise Download PDF

Info

Publication number
WO2001040110A1
WO2001040110A1 PCT/US2000/032953 US0032953W WO0140110A1 WO 2001040110 A1 WO2001040110 A1 WO 2001040110A1 US 0032953 W US0032953 W US 0032953W WO 0140110 A1 WO0140110 A1 WO 0140110A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
venturi
vacuum
shut
center body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2000/032953
Other languages
English (en)
Inventor
Delton M. Boardman
James W. Burke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shell USA Inc
Original Assignee
Shell Oil Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shell Oil Co filed Critical Shell Oil Co
Priority to AU19454/01A priority Critical patent/AU1945401A/en
Publication of WO2001040110A1 publication Critical patent/WO2001040110A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
    • B67D7/0401—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants arrangements for automatically fuelling vehicles, i.e. without human intervention
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/42—Filling nozzles
    • B67D7/44—Filling nozzles automatically closing
    • B67D7/46—Filling nozzles automatically closing when liquid in container to be filled reaches a predetermined level
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
    • B67D7/0401—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants arrangements for automatically fuelling vehicles, i.e. without human intervention
    • B67D2007/0403—Fuelling robots
    • B67D2007/0419—Fuelling nozzles

Definitions

  • This invention relates generally to dispensing a fluid such as gasoline through
  • Such systems may include an overhead gantry which supports a carriage upon which a robot is supported for appropriate movement relative to the vehicle to position the robot adjacent the fuel door on the vehicle.
  • the robotic system may be supported on an island adjacent the vehicle and then moved to a position adjacent the fuel door.
  • Such a system is shown generally in Patent 5,238,034.
  • the robotic system may be stowed underground and after positioning of the vehicle retrieved and moved to a point adjacent the fuel door.
  • hose assembly which includes a nozzle for delivery of fuel into the fuel tank of the
  • the fuel hose must be inserted through the vehicle fuel filler pipe and into a
  • the fuel hose assembly is extended from the robot arm
  • the stowed position and the refueled vehicle may leave the robotic refueling station.
  • Patent Nos. 5,609,190; 5,628,351 and 5,634,503 which are assigned to the assignee of
  • a robot is stored on an overhead carriage which in turn is supported for movement upon a gantry so that the robot may be positioned on either side of the vehicle in accordance with the position of the fuel filler door.
  • the fuel filler door is automatically opened by the robot and the fuel hose inserted into the fuel filler pipe on the vehicle so that fuel may be inserted into the vehicle fuel tank.
  • the fuel hose assembly is extracted from the fuel filler pipe, retracted into the robot arm, and the robot is then appropriately stored on the carriage and returned to its stowed position on the gantry until it is reactivated for refueling another vehicle.
  • Such automatic cut off utilizes a vapor path from the nozzle outlet back to a venturi around the fuel flow path within the nozzle. A sufficiently high pressure must be maintained at a point within this path to indicate that vapor is being drawn into the vapor
  • the fuel flow is cut off usually by a mechanical trip.
  • One apparatus to solve this problem includes utilizing fuel flow through a venturi in such a manner as to create negative pressures (vacuum) which are communicated to the end of the fuel dispensing nozzle in such a manner that when the fuel tank is full, the outlet carrying the negative pressure is covered thereby providing a large differential pressure which may be utilized to activate a transducer to provide a signal to effect the fuel shut off.
  • negative pressures vacuum
  • U.S. Patent No. 5,613,535 which is also assigned to the applicant of the present invention and the disclosure of which is also
  • a fuel dispenser shut off system including a venturi generated vacuum for
  • constricting means disposed within the venturi is a movable body which is positioned by
  • the movable body also carries an elastomeric member
  • the present invention further includes the method of providing a fuel dispensing
  • apparatus including a venturi having an orifice through which fuel flows into a vehicle fuel tank; varying the cross-sectional area of the orifice proportionally to the rate of fuel flow through the orifice to develop a relatively constant vacuum at said orifice;
  • Figure 1 is an elevational view of a fuel tube/fuel nozzle assembly
  • Figure 2 is an end view of the structure shown in Figure 1;
  • Figure 3 is a partial cross-sectional view of the structure shown in Figure 1 taken about the lines 3-3 thereof;
  • Figure 4 is a perspective view of a center body constructed in accordance with the principles of the present invention.
  • Figure 5 is a plan view of the center body shown in Figure 4.
  • Figure 6 is a cross-sectional view of the center body shown in Figure 5 taken about the lines 6-6 thereof;
  • Figure 7 is a partial cross-sectional view of the portion A of the structure illustrated in Figure 6;
  • Figure 8 is a perspective view of a guide number utilized in the venturi of the present invention.
  • Figure 9 is a cross-sectional view of the structure shown in Figure 8 taken about the lines 9-9 thereof;
  • Figure 10 is a graph showing the generation of vacuum with respect to fuel flow when utilizing the structure of the present invention. Detailed Description of the Invention
  • the vacuum generated is communicated to a point adjacent the nozzle
  • the present invention is an improvement over the system shown on U.S. Patent No. 5,613,535 and provides a venturi which includes a center body disposed within a venturi throat defined by converging and diverging cones.
  • the center body is movable from a shut off position which is maintained by a compression spring to an infinitely variable position depending upon flow rate of fuel through the venturi.
  • the principle involved is to maintain the vacuum generated by the fuel flow through the venturi substantially constant irrespective of the fuel flow rate through the fuel tube.
  • the flow of fuel through the fuel tube is controlled by a fuel cutoff valve positioned upstream from
  • the fuel tube/fuel nozzle assembly 10 includes a fuel hose 12 terminated with a dispensing nozzle 14 having a pair of openings 16, 18 which are
  • Tube 20 carries the vacuum created by the fuel flow as will be described below while tube 22 is referenced to atmosphere and is used as a base against which the vacuum is measured.
  • a vacuum is generated in the tube 20.
  • the fuel level in the tank (not shown) reaches a pre-determined position it will cover the opening 16 creating an increase in the vacuum
  • a first member disposed within the fuel tube 24 is a first member forming a
  • the convergent cone includes a continuous lip 40 which defines a continuous shoulder 42 facing downstream of the fuel flow through the tube.
  • the lip 40 in forming the shoulder 42 functions to form the terminus of the venturi, to
  • the center body 46 includes an upstream facing point 48 which tapers in a diverging conical surface 50 from which a plurality of fins 52,
  • the conical surface 50 terminates at circular surface 58 which in turn terminates at a shoulder 60 continuing downstream from the shoulder 60 the center body defines a conically converging surface 62 which terminates a downstream end 64 of the center body 46.
  • the surfaces 50 and 62 define opposing surfaces as defined by the converging cone 32 and the diverging cone 34 disposed in the fuel tube 24. As is shown more specifically in Figs. 6 and 7 the shoulder 60 is cut away to
  • the shoulder 60 has a recess 66
  • the O-ring 44 is then secured within the recess 66 formed therein.
  • O-ring 44 is then secured within the recess 60 through the utilization of an adhesive
  • the O-ring defines a surface or complimentary shoulder 70 which engages the shoulder
  • the center body 46 defines a re-entrant bore 72 at the end 64
  • the re-entrant bore 72 is utilized to support the center body 46 in a operative
  • a cylindrical body 76 defining an opening 78 therein a groove 80 is formed
  • the rod 86 includes an
  • flange 88 which defines a shoulder 90 against which a compression spring 92 (Fig. 3) is seated.
  • the outer surface 92 of the flange 88 has a diameter which is slightly less than the inner diameter of the bore 72, thus, allowing the body 46 to freely move in an upstream and downstream direction against the force of the spring 92 as will
  • the center body 46 is held in position within the venturi throat 72 on the venturi
  • center body 46 at its upstream end as it reciprocates responsive to variations in fuel flow
  • the volume of the venturi changes in response to the fuel flow rate to maintain the vacuum level in the sensor tube 20 substantially constant. This is accomplished by making the venturi throat through which the fuel flows adjacent the opening 36 smaller at lower fuel flows and larger at higher fuel flows. As a result the velocity of the fuel flow is maintained substantially constant and thus the
  • the signal is also applied to a vacuum source 100 to the fuel line 24
  • This feature substantially eliminates the possibility of any residual fuel remaining in the fuel line 24 from passing by the center body 46 and dripping out the end of the nozzle 14 subsequent to fuel shut
  • the vacuum source 100 may be any such source well know to the art such as an
  • accumulator with a piston, a system source, a dedicated vacuum pump or the like.
  • flow rate is to provide a basis for always being able to identify when high level shut off
  • the sensor tube end 16 is covered by the fuel and the vacuum jumps to a higher level such as shown by the dashed line 104, such for example as 80 inches of water, then it can
  • variable venturi which utilizes a movable center body to develop the constant vacuum and which also

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

L'invention concerne un distributeur de carburant comportant un tube à carburant débouchant dans une buse d'alimentation en carburant à insérer dans le réservoir de carburant d'un véhicule. Un venturi est prévu dans le tube d'alimentation en carburant et comporte un corps qui se déplace en va-et-vient dans le col du venturi, de manière que sa section transversale varie proportionnellement au débit de carburant dans le venturi et qu'un vide constant soit produit au niveau dudit col. Le vide constant est envoyé à la buse, si bien que lorsque le niveau de carburant dans le réservoir de carburant recouvre la buse, le vide est interrompu, et un signal est envoyé à une soupape d'arrêt qui stoppe l'écoulement de carburant. Le corps à va-et-vient porte un élément élastomère qui repose contre un épaulement prévu dans le col de venturi, de manière qu'il fonctionne comme un clapet de retenue pour empêcher le carburant résiduel de goutter de la buse en l'absence d'écoulement de carburant dans le tube d'alimentation en carburant.
PCT/US2000/032953 1999-12-06 2000-12-05 Appareil et procede de fermeture de distributeur de carburant, dans lesquels un venturi variable est utilise Ceased WO2001040110A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU19454/01A AU1945401A (en) 1999-12-06 2000-12-05 Fuel dispenser shut-off apparatus and method utilizing variable venturi

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16913499P 1999-12-06 1999-12-06
US60/169,134 1999-12-06

Publications (1)

Publication Number Publication Date
WO2001040110A1 true WO2001040110A1 (fr) 2001-06-07

Family

ID=22614371

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/032953 Ceased WO2001040110A1 (fr) 1999-12-06 2000-12-05 Appareil et procede de fermeture de distributeur de carburant, dans lesquels un venturi variable est utilise

Country Status (2)

Country Link
AU (1) AU1945401A (fr)
WO (1) WO2001040110A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10189350B2 (en) 2017-01-17 2019-01-29 Ford Global Technologies, Llc Fuel drip retention

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR853435A (fr) * 1938-04-25 1940-03-19 Pour Tous App Mecaniques Sa Perfectionnements aux appareils distributeurs de liquides
FR1586606A (fr) * 1967-01-20 1970-02-27
WO1999011566A1 (fr) * 1997-09-01 1999-03-11 Opw Fueling Components Europe B.V. Buse de distribution de carburant comportant une vanne antigouttes et un venturi situes dans l'extremite en aval de la buse

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR853435A (fr) * 1938-04-25 1940-03-19 Pour Tous App Mecaniques Sa Perfectionnements aux appareils distributeurs de liquides
FR1586606A (fr) * 1967-01-20 1970-02-27
WO1999011566A1 (fr) * 1997-09-01 1999-03-11 Opw Fueling Components Europe B.V. Buse de distribution de carburant comportant une vanne antigouttes et un venturi situes dans l'extremite en aval de la buse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10189350B2 (en) 2017-01-17 2019-01-29 Ford Global Technologies, Llc Fuel drip retention

Also Published As

Publication number Publication date
AU1945401A (en) 2001-06-12

Similar Documents

Publication Publication Date Title
US8955561B2 (en) Refilling apparatus with jet level sensor
US6837262B2 (en) Non tank pressurizing fast fill receiver and system for vehicles
EP0888236B1 (fr) Systeme de recuperation des vapeurs pouvant etre utilise avec des vehicules orvr
US5655577A (en) Fuel dispenser
US5474115A (en) Specialty fuel dispensing nozzle
US5676181A (en) Vapor recovery system accommodating ORVR vehicles
US4796678A (en) Liquid delivery apparatus
US4735243A (en) Safety device for a liquid-dispensing nozzle for fuel
WO1982000125A1 (fr) Buse de distribution de combustible
US5476125A (en) Vapor recovery gasoline dispensing nozzle
US5386859A (en) Fuel dispensing nozzle having transparent boot
JPH0676119B2 (ja) 燃料分配ノズル
US5004023A (en) Gasoline nozzle with emergency shut-off
WO1994006713A1 (fr) Appareil de regulation de l'ecoulement de vapeur de carburant
US5299607A (en) Gasoline nozzle with retrofitted emergency shut-off valve
WO2001040110A1 (fr) Appareil et procede de fermeture de distributeur de carburant, dans lesquels un venturi variable est utilise
US5078188A (en) Flow rate limiting device for an automatic shut-off liquid dispensing nozzle
CA1084015A (fr) Tuyere a fermeture automatique a venturi regle
US5842611A (en) Dispensing device
US4258760A (en) Arrangement for sensing the presence of liquid in a vapor line
US5609192A (en) Fuel dispenser
US4245681A (en) Automatic shut-off nozzle having an independent sensor arrangement for sensing the presence of liquid in vapor return means of the nozzle
US4276916A (en) Sensing arrangements for sensing the presence of liquid in a vapor line
US4139032A (en) Liquid dispensing nozzle having controlled shut-off mechanism
US3312257A (en) Automatic dispensing nozzle

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP