EP1275613A1 - Buse de distribution - Google Patents

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Publication number
EP1275613A1
EP1275613A1 EP01116200A EP01116200A EP1275613A1 EP 1275613 A1 EP1275613 A1 EP 1275613A1 EP 01116200 A EP01116200 A EP 01116200A EP 01116200 A EP01116200 A EP 01116200A EP 1275613 A1 EP1275613 A1 EP 1275613A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
fuel
line
valve
pressure
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.)
Withdrawn
Application number
EP01116200A
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German (de)
English (en)
Inventor
Karlheinz Ehlers
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP01116200A priority Critical patent/EP1275613A1/fr
Publication of EP1275613A1 publication Critical patent/EP1275613A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • B67D7/32—Arrangements of safety or warning devices; Means for preventing unauthorised delivery of liquid
    • 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
    • B67D7/54—Filling nozzles with means for preventing escape of liquid or vapour or for recovering escaped liquid or vapour

Definitions

  • the invention relates to a nozzle for filling Fuel through a petrol pump into a fuel tank a motor vehicle, with a nozzle housing, a delivery nozzle connected to the nozzle housing and a nozzle connected to the nozzle housing.
  • nozzles are generally used today used at all pressure-operated petrol stations.
  • the nozzle valves known from practice are are so-called self-closing nozzles. If one shortly before the refueling process at the dispensing nozzle existing sensor nozzle of the in the filler neck of the Tanks of rising fuel being covered includes Mechanism automatically dispenses fuel. Likewise are Facilities available that have an automatic shutdown fuel delivery if, for example, that Dispensing valve with outflowing fuel with the delivery nozzle raised above the horizontal or when the fuel nozzle is spilled falls on the floor. The most recently known from practice Dispensing valves also have a device for the suction of when filling the fuel into the Fuel vapors released (so-called Vapor recovery system).
  • the refueling from the Fuel displaced fuel vapors are used with this Aspirated device and returned to the underground tank.
  • the Suction is carried out to avoid the harmful to health Fuel vapors escape into the environment can.
  • Devices for the extraction of fuel vapors (Gas recirculation systems) have proven to be prone to failure and often proven to be in need of repair. In such Malfunctions either omit the entire suction or the prescribed suction power cannot be provided. The problem is that malfunctions occur these facilities are often not recognized from the outside can. Such can only be done through extensive checks Faults are or can be determined which facilities are in need of repair. First the necessary repair can then be arranged.
  • the invention is the technical problem based on specifying a nozzle of the type mentioned, in which an ongoing control or monitoring the device for the extraction of fuel vapors simple and inexpensive way is possible.
  • the invention teaches a fuel nozzle for filling fuel via a fuel dispenser into a fuel tank of a motor vehicle, with a nozzle valve housing, a delivery nozzle connected to the nozzle valve housing and a nozzle hose connected to the nozzle valve housing, wherein a device for the suction of fuel vapors released when filling the fuel into the fuel tank is provided and the device comprises at least one suction line and wherein the nozzle furthermore has a safety device, the safety device working with the proviso that in the event of an interruption or malfunction in the extraction of the fuel vapors, the normal fuel delivery is switched off by the nozzle and only emergency refueling with reduced output is possible.
  • the fuel flow is interrupted or reduced if the gas recirculation does not work or if the returned gas volume is too small.
  • the nozzle valve works according to the invention only correct if the gas recirculation works correctly.
  • the normal Fuel delivery is turned off automatically and only an emergency delivery is possible.
  • this emergency delivery of the Fuel is a compared to the normal Fuel output greatly reduced output.
  • this greatly reduced Power output corresponds to the power output that is sets when the operating lever of the nozzle in the first (lower) locking position is engaged. In this output position of approximately 15 l / min achieved. It is within the scope of the invention that this output power to which the fuel supply at Interruption or failure of the fuel vapor extraction is reduced in the range between 10 and 20 l / min lies.
  • the device for the extraction of fuel vapors fuel vapors are sucked out, which are mixed with air can be and the suction is conveniently on Discharge port.
  • the device for Suction of the fuel vapors on a gas valve that expediently in the rear area of the nozzle valve housing is arranged and for example via a Gas hose to a vacuum source in the gas pump is connected (EP 0 703 186 A1).
  • the suction line for the Fuel vapors has at least one vacuum section, in which vacuum section during suction the fuel vapors a negative pressure can be generated and wherein in the absence of negative pressure, the normal fuel delivery can be switched off automatically and only one Emergency refueling with reduced output is possible. Absence of negative pressure means on the one hand that in the Vacuum section no vacuum at all and on the other hand also means that it is not sufficient Vacuum arises and thus a minimum value of Vacuum is not reached.
  • the negative pressure in the Suction line is conveniently with the help of a the suction line provided gap, in particular Filter gap or with one in the suction line provided the constriction.
  • a negative pressure of about 20 to 25 mbar.
  • one to the front end sensor pipe leading the dispensing nozzle is provided, being through the sensor line when dispensing fuel Air can be sucked in through the nozzle valve and at Interruption of this air flow by fuel delivery the nozzle can be switched off automatically.
  • the sensor line is to a shutdown device in the nozzle housing connected, in which shutdown device at a negative pressure is generated to a fuel flow, expediently with the help of a Venturi nozzle. by virtue of this negative pressure becomes air through the sensor line sucked. If this air supply is interrupted, as a result of what occurs in the shutdown device Vacuum the fuel flow is automatically switched off.
  • Air is usually drawn in at the front of the Dispensing nozzle.
  • a sensor nozzle expedient arranged through which the air is sucked. If at End of the refueling process of the tank of the motor vehicle is filled and the opening of the sensor nozzle with fuel the air supply is interrupted. Accordingly the fuel delivery then switches automatically from.
  • Ball tilt valve integrated. With the help of the ball tilt valve the air flow through the sensor line is interrupted, if the fuel nozzle with the Dispensing nozzle is raised above the horizontal or if the nozzle is open when fuel is flowing out the floor falls.
  • the air supply through the sensor line is still interrupted with the help of the ball tilt valve, if the nozzle is turned vertically upwards Dispensing nozzle is removed from the petrol pump and the fuel pump starts up. If with the help of Ball tilt valve the air supply through the sensor line interrupted, arises, as already described above, a negative pressure in the switch-off device, which leads to that the fuel delivery is switched off automatically.
  • Vacuum section of the suction line to a control valve connected in the sensor line Vacuum section of the suction line to a control valve connected in the sensor line. With a negative pressure is in the vacuum section of the suction line the control valve and thus the sensor line opened. At the Reduction of the negative pressure and / or in the absence of In contrast, the control valve and thus the negative pressure Sensor line transferred to the closed state. at The presence of negative pressure works for the extraction of the fuel vapors (gas recirculation) perfectly. This vacuum causes the control valve remains in the open position and thus the sensor line is open is. Accordingly, there is an unrestricted fuel delivery possible if the gas recirculation works.
  • the vacuum in the vacuum section is the Suction line either less or completely missing. Then the control valve is closed and consequently is no more air intake through the sensor line possible. As a result, builds up in the shutdown device a negative pressure and this will result in fuel delivery automatically switched off. In other words, at defective gas recirculation the fuel delivery automatically interrupted.
  • the Vacuum section of the suction line via a vacuum line to the control valve in the sensor line connected. It is expedient in the vacuum line between the vacuum section and the control valve a vacuum device arranged. With the help of Vacuum device, the control valve can be used Vacuum can be opened or if it is missing or closed low negative pressure can be closed. With the control valve it is preferably a ball valve.
  • the nozzle valve housing via a pressure line with the control valve in the Sensor line connected and with a low output this control valve due to being in the pressure line building pressure can be transferred to the open position.
  • a pressure device is expediently located in the pressure line integrated, with which opening or closing of the control valve is possible. When pressurized this pressure device opens the control valve. So if only small amounts of fuel from the nozzle given, builds up due to the fuel pressure a pressure in the nozzle valve housing in the pressure line and the control valve is therefore in the open position.
  • the mentioned low output of the fuel corresponds to that in the claim 1 listed reduced output, with which the Fuel delivery in the event of an interruption or malfunction Suction of the fuel vapors is still possible.
  • the reduced output is expediently achieved, when the trigger valve operating lever is in its first (lower) locking position or locking step is arranged.
  • the Output power here usually corresponds to about 15 to 20 l / min.
  • the nozzles described here have in the Usually three locking positions for the operating lever. If now tried with faulty or defective gas recirculation the operating lever into the middle or upper locking position Bring the fuel delivery right away automatically switched off.
  • the invention is based on the knowledge that with the Dispensing valve according to the invention in a simple and inexpensive manner Way the function of gas recirculation automatically and can be checked continuously in a self-monitoring manner. Malfunctions in the extraction of fuel vapors are caused by automatic shutdown of normal fuel delivery and reducing fuel delivery to a strong reduced output due to complaints from Customers identified by the petrol station staff at short notice. The petrol station staff can then do the necessary Take measures for checking the gas recirculation.
  • the dispensing valve according to the invention takes over, as it were automatic control and monitoring function of the gas recirculation. For this function of the nozzle valve according to the invention becomes the vacuum situation in the suction line as well as the pressure situation in the fuel line exploited.
  • Dispensing valve is the option in case of faulty or defective gas recirculation nonetheless a tank emergency operation maintain until the gas recycle failure is eliminated.
  • the Monitoring the gas recirculation according to the invention on relative little complex and inexpensive way is achieved.
  • electrical energy as well as batteries, cable connections and the like which is undesirable on fuel pumps and dispensers are to be completely dispensed with. When monitoring the gas recirculation only the vacuum conditions or pressure conditions in the nozzle are used.
  • the invention is based on only one Exemplary embodiment illustrating the drawing.
  • the only figure shows a section through one nozzle according to the invention.
  • the nozzle according to the invention is for filling Fuel through a petrol pump into a fuel tank provided a motor vehicle.
  • the nozzle has a Nozzle housing 1, one to the nozzle housing 1 connected discharge nozzle 2 and also to the Nozzle hose 3 connected.
  • the nozzle is also equipped with a sensor line 4, that from the front end of the dispensing nozzle 2 to one Shutdown device 5 in the nozzle housing 1 leads.
  • a sensor line 4 that from the front end of the dispensing nozzle 2 to one Shutdown device 5 in the nozzle housing 1 leads.
  • Fuel flow through the nozzle housing 1 builds up the shutdown device 5 has a negative pressure, which causes air to be drawn in through the sensor line 4, namely at the front end of the delivery nozzle 2 arranged sensor nozzle 6. If the air supply is interrupted is because, for example, the sensor nozzle 6 when filled Tank is covered by the fuel, the vacuum can develop build up in the shutdown device 5 and this leads to an automatic shutdown of the fuel delivery.
  • the Sensor line 4 is also a ball tilt valve 7 is arranged, with which ball tilt valve 7 the air supply through the sensor line 4 can also be interrupted.
  • the nozzle valve according to the invention has a device for the suction of when filling the fuel into the Fuel vapors released.
  • This Device comprises a suction line 8 for the suction the released fuel vapors.
  • This suction is indicated schematically in the figure by arrows Service.
  • a filter gap 9 is provided in the Suction line 8 .
  • the Filter gap 9 forms in the suction line 8 Narrowing point so that when the fuel vapors are extracted normal output at the filter gap 9 a negative pressure arises.
  • the suction of the fuel vapors is in the Other expediently caused by the fact that Suction line 8 to a vacuum source, not shown is connected and through the suction Fuel vapors are returned to the petrol pump's underground tank.
  • the nozzle valve according to the invention is with a safety device equipped which safety device with the provision works that in the event of an interruption or malfunction the extraction of the fuel vapors the normal fuel delivery performance is switched off by the nozzle and the fuel delivery is only possible in a greatly reduced manner.
  • the safety device according to the invention comprises Embodiment the pressure line 10, the printing device 11, the control valve 12, the vacuum device 13 and the vacuum line 14. The function of the safety device, on the vacuum or pressure conditions based on the nozzle will be shown below explains:
  • the pressure drops only up to about 0.8 to 1.5 cash instead.
  • This still relatively high pressure in the nozzle housing 1 with the low output in the pressure line 10 is still sufficient to with the help of the printing device 11, the control valve 12, which is preferably and in Embodiment is designed as a ball valve, open to keep. In this state, the output can be low be refueled.
  • This output power is, for example in the first (lower) locking position of the Actuation lever 15 reached (emergency refueling).
  • the inventive method works Dispensing valve as follows: if the output is increased, for example, the normal delivery of about 30 to 40 l / min, the pressure in the nozzle housing 1 drops to 0.5 up to 0.7 bar. This latter pressure is not enough more to a sufficiently high in the pressure line 10 Build up pressure that cause the printing device 11 could keep the control valve 12 open. If it works However, gas recirculation is in the range of Filter gap 9 of the suction line 8 a negative pressure generated so that the suction line 8 here has so-called vacuum section 16. The negative pressure caused in the vacuum section 16 via the vacuum line 14 the vacuum device 13, the control valve 12 to be transferred to an open position.
  • sensor line 4 also at normal output (e.g. 30 to 40 l / min) open. As a result, there is an unrestricted fuel delivery possible.
  • the in the vacuum section 16 of the Suction line 8 generated negative pressure is about 20 to 25 mbar.
  • the extraction of the fuel vapors is faulty or if the gas recirculation is defective, it works Dispensing valve according to the invention as follows: If the normal Output (for example 30 to 40 l / min) corresponding position of the operating lever 15 is set the pressure in the nozzle housing 1 is relative low and accordingly builds up in the pressure line 10 not enough pressure to push the control valve 12 in to be able to hold the open position. If, on the other hand, the Suction line 8 transported no fuel vapors or an insufficient amount of fuel vapors conveyed, the negative pressure in the negative pressure section is sufficient 16 not out to the control valve 12 using the vacuum device 13 to open or close hold. Consequently, the control valve 12 is then in its closed state and the air supply through the Sensor line 4 is interrupted. Accordingly, with the Switch-off device 5 switches off the fuel delivery.
  • the Switch-off device 5 switches off the fuel delivery.
  • the operating lever 15 for example, in its first brought (lower) rest position. At this low output is again the pressure in the nozzle housing 1 large enough to be in the pressure line 10 can build up a sufficiently high pressure. Accordingly causes the printing device 11 to open the Control valve 12 and thus is an air supply through the Sensor line 4 possible. A fuel delivery at low Output is therefore also in the case of defective gas recirculation possible. If the output is then increased, for example to 30 to 40 l / min by e.g. B. the Operating lever 15 opens further, the fuel delivery switches automatically in the manner described above.
  • a greatly reduced output for example about 15 l / min

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
EP01116200A 2001-07-04 2001-07-04 Buse de distribution Withdrawn EP1275613A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01116200A EP1275613A1 (fr) 2001-07-04 2001-07-04 Buse de distribution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01116200A EP1275613A1 (fr) 2001-07-04 2001-07-04 Buse de distribution

Publications (1)

Publication Number Publication Date
EP1275613A1 true EP1275613A1 (fr) 2003-01-15

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EP01116200A Withdrawn EP1275613A1 (fr) 2001-07-04 2001-07-04 Buse de distribution

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EP (1) EP1275613A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8752597B2 (en) 2008-09-17 2014-06-17 Franklin Fueling Systems, Inc. Fuel dispensing nozzle
US20230174367A1 (en) * 2019-11-29 2023-06-08 Elaflex Hiby Gmbh & Co. Kg Filling valve with leakage protection device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5174346A (en) * 1991-05-29 1992-12-29 Healy Systems, Inc. Fuel dispensing nozzle
US5655577A (en) * 1995-06-05 1997-08-12 Shell Oil Company Fuel dispenser
GB2352437A (en) * 1999-07-23 2001-01-31 Tokheim Services France A method of checking the correct operation of a vapour recovery system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5174346A (en) * 1991-05-29 1992-12-29 Healy Systems, Inc. Fuel dispensing nozzle
US5655577A (en) * 1995-06-05 1997-08-12 Shell Oil Company Fuel dispenser
GB2352437A (en) * 1999-07-23 2001-01-31 Tokheim Services France A method of checking the correct operation of a vapour recovery system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8752597B2 (en) 2008-09-17 2014-06-17 Franklin Fueling Systems, Inc. Fuel dispensing nozzle
US20230174367A1 (en) * 2019-11-29 2023-06-08 Elaflex Hiby Gmbh & Co. Kg Filling valve with leakage protection device
US11999610B2 (en) * 2019-11-29 2024-06-04 Elaflex Hiby Gmbh & Co. Kg Filling valve with leakage protection device

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