MAIN VALVE OF A FUEL DISPENSING NOZZLE

Abstract: The invention relates to a fluid dispensing nozzle (1) for fluid, comprising: a main valve (11) which is movable between an open situation, in which it opens a main through-flow opening for the fluid, and a closed situation in which it substantially closes the main through-flow opening; an auxiliary valve (12) which is movable relative to the main valve between an open situation, in which it opens an auxiliary through-flow opening for the fluid, and a closed situation in which it substantially closes the auxiliary through-flow opening; wherein a trigger (13) is adapted to move the auxiliary valve from the closed to the open situation counter to the action of first biasing means (14), such that when the trigger is operated the auxiliary valve is first carried from the closed to the open situation and the main valve is subsequently carried from the closed to the open situation, wherein second biasing means (15) are provided which are adapted to open the main valve when the auxiliary valve is open.

Description: MAIN VALVE OF A FUEL DISPENSING NOZZLE The invention relates to a fluid dispensing nozzle which is connectable to a fluid reservoir for filling a tank with fluid, which fluid dispensing nozzle is provided with a through-flow channel for the fluid which debouches into a spout and with a trigger for operating at least one valve in the through- flow channel for opening and/or closing the through- flow channel, which fluid dispensing nozzle comprises: - a main valve which is movable between an open situation, in which it opens a main through-flow opening for the fluid, and a closed situation in which it substantially closes the main through-flow opening; - an auxiliary valve which is movable relative to the main valve between an open situation, in which it opens an auxiliary through- flow opening for the fluid, and a closed situation in which it substantially closes the auxiliary through-flow opening; wherein the trigger is adapted to move the auxiliary valve from the closed to the open situation counter to the action of first biasing means, this such that when the trigger is operated the auxiliary valve is first carried from the closed to the open situation and the main valve is subsequently carried from the closed to the open situation. Such a fluid dispensing nozzle is known in practice in the form of a nozzle for filling with fuel. In the known nozzle the pressure of the fuel on the main valve is decreased by first opening the auxiliary valve which has a smaller surface. In view of the smaller surface of the auxiliary valve, it can be opened first by a user relatively easily. Opening of the main valve then requires less effort. In the known nozzle the surface of the auxiliary through-flow opening is such that a small pressure drop is created with the purpose of enabling ) to to H P 1 in o in o in o in tr 0 PJ φ P- CQ rt Hi 3 co rt PJ 3 ft J tr 3 tr P- 0 P- TJ Hi J d 0 Hi CL tr 3 TJ Hi . d d 3 d P- tr 0 J d tr Hi φ PJ d P- J P- d TJ d H 0 J 0 Hi O d φ 0 H P- CL c N Φ Hi P- Hi Φ Φ PJ w X J P- PJ < Φ 0 d Hi N d Hi Hi Hi Φ P 1 3 rt >• 0 rt φ Ω d Hi d φ P- CD d CQ φ Hi ft <! d ft N 0 d P- φ Φ CO P 1 φ tr CL d- CO Φ P- Hi tr CD CQ P- P- d PJ tr P- CL P- P 1 TJ CL d P- CQ P- PJ Φ 2 P- Φ 0 P- <! 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Φ d P- CL tQ φ d 0 rt P" iQ rt s: CQ d rt CL Φ CL Φ J O d rt 0 H TJ tr P 1 0 tr tr tQ tr Hi CD ft IQ ft tr Hi φ Φ P- Hi Φ φ Φ ft Φ tr Φ d CD d 0 φ auxiliary valve, filling with only a small quantity of fluid can take place easily. The auxiliary valve is preferably movable between the closed and open situation thereof when the main valve is open. The flow rate is maximal when both the main valve and the auxiliary valve are situated in the open positions. In a further preferred embodiment the auxiliary valve and/or the main valve is movable in a direction substantially opposed to the flow direction of the fluid during operation of the fluid dispensing nozzle. In this preferred embodiment an excellent closure of the main through- flow opening and the auxiliary through- flow opening is achieved under the pressure of the fluid in the closed situation of the main valve respectively the auxiliary valve. The nozzle according to the invention thereby has excellent protection against leakage of fuel . The invention will now be described in more detail with reference to the drawings, in which figure 1 shows a cross-sectional view of a modular nozzle according to the invention in a first embodiment ; figure 2 shows a cross-sectional view of the modular nozzle according to the invention in a second embodiment; figure 3 shows the basic module of the nozzle in more detail with the opened auxiliary valve; figure 4 shows the basic module with opened main valve; figure 5 shows the basic module with opened auxiliary and main valve; figure 6 shows a graph in which the required force to be exerted by a user is plotted schematically against the stroke of the valve rod; figure 7 is a graph which shows schematically the fuel flow plotted against the stroke of the valve rod; figure 8 is a detailed side cross-sectional view of the end valve of the nozzle according to the invention in the first, closed position; figure 9 shows the end valve of figure 8 in top cross-sectional view; figure 10 shows the end valve of figure 9 in the second, open position; figure 11 shows the end valve in the third, open position; and figure 12 shows the nozzle with hose connecting module. Figure 1 shows as an example of a fluid dispensing nozzle according to the invention a cross- sectional view of a modular fuel nozzle in a first embodiment designated with 1. Figure 2 shows an alternative embodiment of the nozzle designated with 10. Nozzle 1 comprises a basic module 2 on which one or more further modules can be releasably mounted. The set of further modules contains for instance a closing module 3, a passage module 7, a spout 5 and/or an adapter sleeve 9. In the case of nozzle 1 or 10 nut 4 can be unscrewed, whereafter closing module 3 or passage module 7 can be pushed as desired into the basic module. In figure 2 nozzle 10 is provided with passage module 7. This latter connects vapour return channel 8 to the hose of the fuel pump (not shown) to which the nozzle is connected. Evaporated fuel can hereby be recovered during filling. Conversely, closing module 3 of figure 1 closes the vapour return channel. In nozzle 1 no vapour recovery is possible. Spout 5 can likewise be mounted releasably onto basic module 2 by means of nut 6. A spout of suitable diameter can be added in simple manner to the basic module. Alternatively, spout 5 can be embodied with a narrower diameter so that it is suitable in particular for use with fuel tanks of vehicles running on unleaded petrol . By placing an adapter sleeve 9 on spout 5 this latter can be made suitable for fuel tanks of vehicles running on leaded petrol or diesel, or unsuitable for fuel tanks of vehicles running on unleaded petrol . Nozzle 1 is suitable in the shown embodiment for filling with diesel. Nozzle 1 can also be used for filling with leaded petrol without applying vapour recovery. Nozzle 10 is suitable in the shown embodiment for filling with unleaded petrol. The set of modules also comprises a display module (not shown) which is fixed for instance to the basic module, for displaying information such as advertising messages. Figure 3 shows the basic module of the nozzle in more detail. Main valve 11 opens a main through- flow opening for the fuel. Received in main valve 11 is an auxiliary valve 12 which opens an auxiliary through-flow opening for the fuel. Auxiliary valve 12 is coupled to rod 16 which runs through the main valve and is movable therein. Rod 16 is coupled for movement to trigger 13. Rod 16 is provided with a stop 17 against which rest first biasing means 14 and second biasing means 15. Biasing means 14 and 15 are spring means. First biasing means 14 engage on the other side thereof on the seat 18 of main valve 11. Second biasing means 15 engage on the other side thereof on the main valve 11 itself. The operation of the nozzle is as follows. By exerting a relatively small force on handle 13 the user opens auxiliary valve 12 through movement of rod 16. This opened situation of the auxiliary valve is shown in figure 3. During movement of rod 16 first and second biasing means 14 and 15 are biased. The quantity of fuel which flows through the auxiliary through-flow opening preferably lies in the range of 10 to 50% of the maximum fuel flow through the nozzle. The dimensions of the auxiliary through-flow opening and the main through-flow opening are more preferably such that approximately 25% of the maximum fuel flows through the auxiliary through- flow opening. 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Φ rt rt φ Z d Φ CO Hi Z tr to Φ Hi Φ Hi - Ω d Hi tr 0 Φ Φ P- Hi Hi to CL TJ t H{ rt 0 d 0 < CL tr P 1 Φ P d to to Hi to P- 0 P- Hh P 1 φ • > < P" CO d Hi H o H Φ d CD 0 Ω CL Hi rt Φ φ J CQ 0 CD d ft tr Φ rt Ω P- φ 3 CQ Hi Ω 1 • tr P Hi TJ tr 0 TJ U> Hh O d 0 d 0 CD Φ ^ d 0 o Hi φ d 0 tV> P s; P- < Hi ft 1 Φ Tl P- d 0 CD Φ to CQ - P 1 tr ft d Φ Φ tr P Ω P- Φ tQ Φ Hh P- 0 P φ P- Φ tr IQ CQ Φ Ω ft iQ d d P" (t CO P- d iQ (t Z CD d Φ P- ft P- d CL Hi • ft P- d P X d P- P- d o Ω ra Φ P- 0 H Φ tr 0 Hi tr P- Φ 0 P 1 P rt ID O d O d φ < Φ d φ P" d d P 1 z tr CQ d Ω CL d P P CD 1 φ P- rt • P φ P- d d Hf P 1 ID TJ CL 0 P Hi ^ rt d ft Φ < z [Q d Φ Hi CD Hi ^ H Φ Hi d CL Φ P P P- < CQ φ tr 3 TJ z ^ tr ft d P φ H{ rt rt P- tr 0 TJ φ ft P- 3 P- d 3 Φ rt φ < tr φ 0 o Z - d tr rt 0 ro Hi Φ P 1 Φ rt CL φ Z Z l-h ω CL Φ Ω P < d 3 CL ft 0 ~ rt CO tr Φ tr Φ P c TJ tr tr tr ft P P d < 1 < Hi Hi d P- φ ft > < P- Φ M rt tr ft P O φ rt ro Hi P 3 d tr rt d tr Φ CL P 1 • TJ l-h 0 0 0 d TJ TJ Φ rt P- CL φ φ 0 Hi P 3 Φ ft Hi tr Hi d d rt UJ ≤ d d rt P P- tr φ P Φ 0 d < φ 0 P O tr Hi 3 CL tr TJ ft U) ro Φ CO Ω Hf Φ P d N P- Φ Φ ^^ Φ TJ tr -j O rt 3 Hi CL N z d Hi Ω o Φ CD TJ d P- Φ CD P 1 φ P- Φ tr H P- P Z O Hi 0 d z Φ < Φ CL rt rt P Φ Φ 0 d P- CQ Φ d rt TJ P P tr d d ft Hi CO J CL rt P- d P to P ro Φ Hi P- tr ft Φ - Ω rt O o Hi Hi H Ω P- Ω d ra Φ Hi tr P- Hh Hh P- ft Φ Ω CL d 3 P- 0 P P Φ 0 0 ft 0 φ 0 o Ω 3 d Hf rt CD CL d rt CQ CD 0 Hi P 0 H{ CD N tr P- P P- tr J d Hi Hi CL Ω Φ N P ro P- Hi H{ d P 0 CO φ H{ tr CO φ P- Hi d d P- 0 IQ Hi tr P- P TJ ro Hi d 0 ft Φ d rt tQ H{ Hi 0 Hi d φ o P- IQ CQ tr φ tr < d H- 1 TJ Φ Z d tQ Ω < d P CQ CQ Φ P- P" d P H Φ 0 CD P d Φ ft Φ rt d rt 1 ra m P 1 Φ Hf CO d d P 1 3 d Hi Hf 0 CD < P- <: CQ P- P" CL P- • φ rt ft in 0 Φ Φ P tr ra Hi Φ U> rt ft d P 0 d Hi rt Ω TJ d φ - UJ p- ft tt d Hi P 3 CD tr rt 0 d P P CT\ 0 ft tr Hh d CO ft P- d Φ P- d iQ P* Hi • d tr Φ P- CL tr • CL ω P- 0 Hi P- φ Φ Q t Φ d d d P- N JO rt Hi d Ω P d φ 0 0 Φ Hi tr CL CL 0 Φ Hi tr 0 CL rt ft T Hi P- P P" J Hi Hι < Hi Hi ro t ft CD 3 Hi TJ t rt CL 3 Hi < to t CQ CD 3 < Hi H 0 J φ tr tr 0 H{ φ tr Φ 0 d d P P- H-" S -0 tr d Φ d Hi H tr Φ Φ P" P H ιl 3 TJ Φ P P 1 O CL φ ft P P to 0 < Hi < CO Φ φ J P" d P- Φ tr P φ 0 Hi P* P 0 P> P H( P 0 • * Hi φ ft rt P- 3 φ d Φ P- H- 1 0 P- rt P- Hi CD d P 1 < ^ -. 0 P- d z < P- P- P 1 P- d < rt z P Ω TJ tt d P- CL Ω CD Φ ft CO P- CD d < CQ φ d CO P d CO Φ > ft ft ft α P- rt rt P- Ω z Hi d tr tr P H- 1 CL tr tQ Φ Hi Ω tQ ra rt CJ φ P- tr Φ 0 tr CL CL 0 P P- iQ Hh Ω ^ d Ω φ Φ 0 tr H P P to Hf TJ CQ to to J d 0 Φ O d φ φ TJ Φ d Hi 3 Hi 0 0 rt O <; CL z Φ Ω rt P> Φ H ft Ω H Φ P CL P- d Ω ft Hi ft Hi P 1 P- CO 0 Hi d rt P- 3 φ d rt CL tr Φ P Φ H{ tr ~ Φ Φ d P Hj - ^ 0 φ φ Φ P- P- X ft 3 Hi d 0 P TJ P 1 z tr - P- • P- ro Hi 0 P Ω CL P 1 CD 3 d P- Hi TJ Ω ra Ω d Φ tr Φ P Φ P 1 H{ p- Hi P- Φ φ d φ Φ X Hi 0 z 0 P- Hf Φ X tr P- Φ ft CD ft CD Φ CL Hi ft 3 Ω rt P 1 P- P- rt tr d P < ^ ra Hi Φ P d tr P- Z Hf Φ P P- Φ IQ Hi P- d P- Z ft tr Φ rt tr < CD d tr Φ d φ tr tr CL z • P • Ω ft P- d Φ P* d CL d P 0 Hi 0 tr Φ Φ Φ Hh P P- P Hi P z CD Φ Ω iQ CO Φ tr tr rt H{ Ω Hi CL P- CO P- Hi rt d φ d - tr CL TJ rt d P- H{ 0 P- *ι P 1 Hi Φ P- tr ft d P P P Φ P- Ω P 1 P rt rt P z P P tr Φ 0 IQ H{ 0 ft d Ω P- ^ tr Hi tr tr Φ CQ tr o Hi tr d Ω CL Ω tr z tr ft P d < P Hi Φ N d 0 CL tr CD tr iQ Φ P- d TJ Φ z Hi *< o to tQ tr P- tr d tr d P- P- P" P P 1 Φ N Hf ^ P Φ d TJ Cfl rt Hi P- Φ < — P Hi P rt P Φ ro P P< P 1 Φ rt P 1 P" Φ P rt P- H Hi O rt Φ 0 d Hi rt ft P Φ TJ d Hi d tr P- P- P- 3 < P φ o Ω 0 ft Φ 0 TJ P- <! 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P rt d d TJ d * P- tr Φ Ω CL Φ ≥! ft P" 3 d d N d tr iQ rt φ TJ P- 0 Φ tr φ d P to Φ 0 CD φ P 1 d Φ ra 3 P 0 d d d P- CO tr rt n^ Φ CL rt Ω Φ Φ rt tr Hi Hh tQ - CD TJ > < CD < P 1 < d Φ ft P 0 0 o Φ rt Hf P P 1 P- Φ P" P P- H TJ Hi CL d Ω tr d Φ 3 H Φ P CQ φ CL d P- J rt P- rt 0 Z P Φ d < Hf Φ Φ φ *> tQ P CD Φ tr ft 3 d tr ft CL Φ 0 P P- < P Hi o UJ 0 Ω d Φ tr Φ rt Hf P- Φ d Φ d ft d CD Φ CL < • oo Hi 3 O P CL Φ d tr CD Ω Hf 0 CD rt P ra P Φ 0 0 <; φ rt P Φ tr P N P- CO Hf >1 J CD ft CL HJ 0 CL Hi rt P" N Hi ^ o O rt tr d CL P- 0 tr P- P Hh Φ Hh Φ P- CL d Hi P- Φ ra Φ tr Hi 0 Φ d φ P- d P Hi iQ CL CL P Φ

Claims: CLAIMS 1. Fluid dispensing nozzle which is connectable to a fluid reservoir for filling a tank with fluid, which fluid dispensing nozzle is provided with a through-flow channel for the fluid which debouches into a spout and with a trigger for operating at least one valve in the through- flow channel for opening and/or closing the through- flow channel, which fluid dispensing nozzle comprises : - a main valve which is movable between an open situation, in which it opens a main through-flow opening for the fluid, and a closed situation in which it substantially closes the main through-flow opening; - an auxiliary valve which is movable relative to the main valve between an open situation, in which it opens an auxiliary through-flow opening for the fluid, and a closed situation in which it substantially closes the auxiliary through-flow opening; wherein the trigger is adapted to move the auxiliary valve from the closed to the open situation counter to the action of first biasing means, this such that when the trigger is operated the auxiliary valve is first carried from the closed to the open situation and the main valve is subsequently carried from the closed to the open situation, characterized in that second biasing means are provided which are adapted to open the main valve when the auxiliary valve is open. 2. Fluid dispensing nozzle as claimed in claim 1, wherein the second biasing means are adapted such that movement of the auxiliary valve from the closed to the open situation takes place counter to the action of the second biasing means. 3. Fluid dispensing nozzle as claimed in claim 1 or 2, wherein the ratio of the size of the auxiliary through-flow opening to the size of the main through-flow opening lies substantially in the range of 1:9 to 1:1 and is preferably 1:3. 4. Fluid dispensing nozzle as claimed in any of the foregoing claims, wherein the auxiliary valve is movable between the closed and open situation thereof when the main valve is open. 5. Fluid dispensing nozzle as claimed in any of the foregoing claims, wherein the auxiliary valve and/or the main valve is movable in a direction substantially opposed to the flow direction of the fluid during operation of the fluid dispensing nozzle. 6. Fluid dispensing nozzle as claimed in any of the foregoing claims, wherein the auxiliary valve is coupled to a rod which runs through the main valve and is movable therein, which rod is also coupled for movement to the trigger. 7. Fluid dispensing nozzle as claimed in claim 6, wherein the rod is provided with a stop on which the second biasing means engage on one side thereof. 8. Fluid dispensing nozzle as claimed in claim 7, wherein the second biasing means engage on the other side thereof on the main valve. 9. Fluid dispensing nozzle as claimed in claim 7 or 8 , wherein the first biasing means engage on one side thereof on the stop. 10. Fluid dispensing nozzle as claimed in claim 9, wherein the first biasing means engage on the other side thereof on the seat of the main valve. 11. Fluid dispensing nozzle as claimed in any of the foregoing claims, wherein the first and/or second biasing means are spring means. 12. Fluid dispensing nozzle as claimed in any of the foregoing claims, wherein the fluid dispensing nozzle is a nozzle for filling a tank with fuel.

Inventors: GIESEN LEONARDUS HENRICUS WILH, NIJSEN ANDREAS JACOBUS LOUIS, GIESEN, LEONARDUS, HENRICUS, WILHELMUS, NIJSEN, ANDREAS, JACOBUS, LOUIS
Applicants: GIESEN LEONARDUS HENRICUS WILH, NIJSEN ANDREAS JACOBUS LOUIS, OPW FUELING COMPONENTS EUROP B, GIESEN, LEONARDUS, HENRICUS, WILHELMUS, NIJSEN, ANDREAS, JACOBUS, LOUIS, OPW FUELING COMPONENTS EUROPE B.V.
Application year: 1998
Main classification: B67D5
IPC codes: B67D5