EP1327604B1 - Zapfventil für Kraftstoff - Google Patents
Zapfventil für Kraftstoff Download PDFInfo
- Publication number
- EP1327604B1 EP1327604B1 EP02000727A EP02000727A EP1327604B1 EP 1327604 B1 EP1327604 B1 EP 1327604B1 EP 02000727 A EP02000727 A EP 02000727A EP 02000727 A EP02000727 A EP 02000727A EP 1327604 B1 EP1327604 B1 EP 1327604B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- main
- flow
- closure body
- fuel
- reduced 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.)
- Expired - Lifetime
Links
Images
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
- B67D7/06—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
- B67D7/48—Filling nozzles automatically closing when liquid in container to be filled reaches a predetermined level by making use of air suction through an opening closed by the rising liquid
Definitions
- the invention relates to a nozzle with a shut-off valve for the fuel, which is a main closing body and one has to be operated from the outside, the Movements of the main closing body are affected, and with a switch-off for fuel delivery triggered by negative pressure.
- valve In such a valve (DE-AS-1 197 776) is in one Main locking body arranged pre-locking body with a lever in connection. If you operate this lever, it flows first a small amount of fuel through the locking body. This creates an initially existing pressure balance finished, which acted on the main closing body, so that the main closing body is also moved into the open position and so that the fuel can flow to the outflow opening.
- the bypass line that leads through the pre-closing body and can be closed by it is a narrowing provided a negative pressure due to the flowing fuel is generated (Venturi arrangement). Because of this negative pressure air is drawn in through a tube that is nearby the outflow opening of the nozzle ends. There is always air is sucked in, there can initially be no significant negative pressure form.
- the pre-closing body If the pre-closing body is only opened a little, it flows in essentially all of the fuel with very small amounts only through the pre-closing body and the bypass path. For these small flow rates make the Venturi arrangement optimal designed so that even with these small flow rates a large negative pressure is created, by which the Fuel supply reliably switched off when the tank is full becomes. Typical flow rates through this tributary flow path are in the range between 0 and 5 liters per minute. But if the main closing body is now fully open, so the fuel flows through the Main flow path of the nozzle with flow rates in the Order of magnitude of 50 liters per minute. The Pressure difference in the bypass path and thus the one generated there Vacuum is reduced, so that a safe shutdown filled tank is no longer guaranteed.
- the object of the invention is to create a Dispensing valve of the type mentioned, in which a safe Shutting off the fuel supply at both low and is ensured at high flow rates.
- the solution according to the invention consists of one mentioned at the beginning Dispensing valve in that for switching off both a Main current generated negative pressure as well as a secondary flow of the closing body generated negative pressure is used. This enables a quick shutdown both at low and even at high flow rates or filling speeds ensured.
- Vacuum constrictions both in the main stream as well as in the bypass flow provided via one-way valves or check valves with the piston-cylinder unit or membrane unit are connected by which the shutdown is effected.
- the one-way or check valves Through the one-way or check valves the larger negative pressure on the piston-cylinder unit or membrane unit. At low flow rates, where the fuel is only or essentially through the channel to be closed by the pre-closing body flows, this negative pressure is that in the area of the secondary flow generated negative pressure. At high flow rates, the negative pressure generated in the main flow effective.
- the negative pressure of the main flow is downstream of the place where the negative pressure of the secondary flow creates becomes.
- the main closing body expediently has on the outflow side a rounded, constricting the outflow channel, essentially mushroom-shaped or teardrop-shaped projection. In the flow velocity is increased in this area, whereby a negative pressure is generated in the main stream here.
- the projection can have bores that with the Outflow side of the pre-closing body are connected. By these holes can be passed by the pre-closing body Leak fuel.
- the main closing body is opened and will therefore have a greater flow velocity in the When the main flow is reached, the vacuum generated by this acts in the area of the bores, increases the outflow speed through the channel, which are closed by the locking body can, as well as the negative pressure in the area of the pre-closing body.
- By increasing the flow velocity one finds further increase in the vacuum in the area of the pre-closing body instead, so this vacuum, which to turn off is used, even at high flow rates for a safe Switching off is sufficient.
- the protrusion is as one the outflow opening of the channel in which the pre-closing body is arranged, except for a substantially annular opening closing element formed. On the edge of this annular opening then forms the negative pressure of the Main current from the negative pressure in the area of the pre-closing body as well as increasing the flow rate, thereby as I said, the negative pressure in the area of the pre-closing body is further increased.
- the main closing body an annular elevation around the annular opening which has the main current around the projection of the main closing body deflected to the outflow opening.
- FIG. 1 the structure of an inventive is schematic Nozzle shown.
- the fuel flows through a line 1 into the nozzle and leaves it through a line 2.
- a valve arrangement 4 is provided in a housing 3, through which the fuel flow is controlled.
- This valve arrangement 4 on the one hand has a main closing body 5, by a compression spring 6 in the figure down against one Valve seat 7 is pressed.
- the main closing body points thereby a bore 8 through which a small amount of fuel from the lower space 9 of the valve 4 into the upper space 10 can flow.
- the main closing body 5 also has one conical central bore 11 through a pre-closing body 12 is closed by a compression spring 13 is pressed down.
- This locking body 12 is formed conical in the lower area and points inside Channels 14 on.
- These channels 14 are connected via a line 15 a check valve 16 and a membrane unit 17 connected.
- This membrane unit 17 is via a further check valve 18 and a line 19 with a constriction 20 in the inflow line 1 connected.
- the left cavity in Fig. 1 21 of the membrane unit 17 is not only with the check valves 16 and 18 connected, but also with a tube 23, which ends near the outflow opening of the tube 2.
- the Pre-locking body 12 can by a lever 24 against the force the spring 13 can be moved upwards and by a locking device 25 in the upward position be determined. Serves as an abutment for the lever 24 thereby a toggle joint 26, the kink angle in the active Position can be set by a device 27 can.
- the toggle joint 26 is by a compression spring 28 pushed to the right in FIG. 1. About a rod 29 is on the other hand, the toggle joint with the membrane 30 of the membrane unit 17 connected.
- the valve 22 serves to close the line 23 if the nozzle is tilted up or dropped to in this too Trap to shut off the fuel supply.
- Fig. 2 shows an embodiment in which the narrowing 20 is dispensed with in the area of the feed line 1.
- the main closing body 5 is in this case essentially by one teardrop-shaped projection 32 supplemented by webs 37th is held and the outflow channel 34 through the pre-closing body 12 can be closed except for one closes annular gap 38.
- Region 33 generates a negative pressure, which via line 14 to the cavity 21 of the membrane unit 17 (Fig. 1) is passed. This is done via lateral holes shown in Fig. 2 in Area 33.
- the main closing body 5 as shown in Fig. 2 is opened on the annular opening 38 creates a negative pressure, which over the Channel 34 on the one hand increases the negative pressure at 33.
- FIGS. 3 and 4 is also on the constriction 20 in the main flow is dispensed with.
- the negative pressure in the Rather, the main flow is in the area of the main closing body generated.
- the main closing body 5 essentially has one mushroom-shaped projection 32, which in the outflow line 2 protrudes. With the main closing body 5 closed, like this 3, the fuel flows through the throttle line 8 and past the locking body 12 and generated at 33 a negative pressure that through line 14 to the Chamber 21 of the membrane unit 17 (Fig. 1) is transferred.
- the Fuel then continues to flow through a channel 34 and openings 35 in the mushroom-shaped projection 32 into the outflow line Second
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jet Pumps And Other Pumps (AREA)
- Fuel-Injection Apparatus (AREA)
- Feeding And Controlling Fuel (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Check Valves (AREA)
Description
- Fig. 1
- eine erste Ausführungsform der Erfindung;
- Fig. 2
- Einzelheiten eines Ventils einer zweiten Ausführungsform;
- Fig. 3
- Einzelheiten einer dritten Ausführungsform eines Ventils mit geschlossenem Hauptschließkörper; und
- Fig. 4
- das Ventil der Fig. 3 mit geöffnetem Hauptschließkörper.
Claims (8)
- Zapfventil mit einem Absperrorgan (4) für den Kraftstoff, das einen Hauptschließkörper (5) und einen von außen zu betätigenden Vorschließkörper (12) aufweist, der die Bewegungen des Hauptschließkörpers (5) beeinflußt, und mit einer durch Unterdruck auslösbaren Abschaltung (17, 29, 30, 26) für die Kraftstofförderung, dadurch gekennzeichnet, daß zum Abschalten sowohl ein im Hauptstrom erzeugter Unterdruck als auch ein im Nebenstrom des Vorschließkörpers (12) erzeugter Unterdruck verwendet werden.
- Zapfventil nach Anspruch 1, dadurch gekennzeichnet, daß Rückschlagventile (16, 18) vorgesehen sind, die so geschaltet sind, daß jeweils der höhere Unterdruck zum Abschalten verwendet wird.
- Zapfventil nach Anspruch 1, dadurch gekennzeichnet, daß der Unterdruck des Hauptstroms an einer Stelle erzeugt wird, so daß dieser den Unterdruck und die Strömungsgeschwindigkeit des Nebenstroms erhöht.
- Zapfventil nach Anspruch 1 oder 3, dadurch gekennzeichnet, daß der Unterdruck des Hauptstroms stromab (36, 38) von der Stelle (33) erzeugt wird, wo der Unterdruck des Nebenstroms erzeugt wird, und dadurch der Unterdruck und die Strömungsgeschwindigkeit des Nebenstroms erhöht werden.
- Zapfventil nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß der Hauptschließkörper (5) auf der Ausströmseite einen den Ausströmkanal (2) einengenden abgerundeten, im wesentlichen pilz- oder tropfenförmigen Vorsprung aufweist.
- Zapfventil nach Anspruch 5, dadurch gekennzeichnet, daß der Vorsprung (32) Bohrungen (35) aufweist, die mit der Ausströmseite des Vorschließkörpers (12) verbunden sind.
- Zapfventil nach Anspruch 5, dadurch gekennzeichnet, daß der Vorsprung als ein die Ausströmöffnung des Kanals (34), in dem der Vorschließkörper (12) angeordnet ist, bis auf eine im wesentlichen ringförmige Öffnung (38) verschließendes Element ausgebildet ist.
- Zapfventil nach Anspruch 7, dadurch gekennzeichnet, daß der Hauptschließkörper (5) um die ringförmige Öffnung (38) eine ringförmige Erhebung (39) aufweist, der den Hauptstrom um den Vorsprung (32) des Hauptschließkörpers (5) zur Ausströmöffnung umlenkt.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50201455T DE50201455D1 (de) | 2002-01-11 | 2002-01-11 | Zapfventil für Kraftstoff |
AT02000727T ATE281407T1 (de) | 2002-01-11 | 2002-01-11 | Zapfventil für kraftstoff |
EP02000727A EP1327604B1 (de) | 2002-01-11 | 2002-01-11 | Zapfventil für Kraftstoff |
ES02000727T ES2232685T3 (es) | 2002-01-11 | 2002-01-11 | Valvula de surtidor para carburante. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02000727A EP1327604B1 (de) | 2002-01-11 | 2002-01-11 | Zapfventil für Kraftstoff |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1327604A1 EP1327604A1 (de) | 2003-07-16 |
EP1327604B1 true EP1327604B1 (de) | 2004-11-03 |
Family
ID=8185239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02000727A Expired - Lifetime EP1327604B1 (de) | 2002-01-11 | 2002-01-11 | Zapfventil für Kraftstoff |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1327604B1 (de) |
AT (1) | ATE281407T1 (de) |
DE (1) | DE50201455D1 (de) |
ES (1) | ES2232685T3 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8752597B2 (en) | 2008-09-17 | 2014-06-17 | Franklin Fueling Systems, Inc. | Fuel dispensing nozzle |
DE202009001520U1 (de) | 2009-02-06 | 2010-08-05 | Horn Gmbh & Co. Kg | Zapfventil zum Befüllen von Flüssigkeitsbehältern |
US8371341B2 (en) | 2009-09-24 | 2013-02-12 | Deleware Capital Formation, Inc. | Magnetically actuated vapor recovery valve |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1197776B (de) | 1958-01-09 | 1965-07-29 | Tokheim International A G | Zapfpistole |
JPS5664999A (en) * | 1979-10-19 | 1981-06-02 | Tokico Ltd | Lubricating system |
FR2668761B1 (fr) * | 1990-11-02 | 1996-06-21 | Schlumberger Ind Sa | Lance de distribution d'hydrocarbure. |
US5297594A (en) * | 1992-06-03 | 1994-03-29 | Rabinovich Joshua E | Vapor recovery nozzle |
NL1006900C2 (nl) * | 1997-09-01 | 1999-03-02 | Opw Fueling Components Europ B | Vulpistool met verbeterde hoofdklep. |
-
2002
- 2002-01-11 AT AT02000727T patent/ATE281407T1/de not_active IP Right Cessation
- 2002-01-11 EP EP02000727A patent/EP1327604B1/de not_active Expired - Lifetime
- 2002-01-11 ES ES02000727T patent/ES2232685T3/es not_active Expired - Lifetime
- 2002-01-11 DE DE50201455T patent/DE50201455D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1327604A1 (de) | 2003-07-16 |
ATE281407T1 (de) | 2004-11-15 |
DE50201455D1 (de) | 2004-12-09 |
ES2232685T3 (es) | 2005-06-01 |
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