JP2008247407A - Fuel feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent fuel from overflowing liquid feeding port due to an erroneous operation when a cooperative operation is carried out after a liquid feeding nozzle is automatically closed. <P>SOLUTION: A control device 250 of a fuel feeding device 100 is operated such that each of signals outputted from a nozzle switch 150a and a pulse transmitter 190a of a flow meter 190 is supplied and at the same time a predetermined calculation processing is carried out to control a pump motor 200a of a liquid feeding pump 200 and a flow rate control valve 230 and then a present measured and a fed amount of liquid is displayed at a flow rate display unit 270. In addition, the control device 250 has a low flow rate discriminating means for reading a flow rate measured by the flow meter and judging whether or not a fed liquid less than a predetermined low flow rate continues for a predetermined period of time, a target flow rate setting means for setting a numerical value becoming an integer subsequent to the judgment when the fed liquid having a flow rate less than a low flow rate is judged to continue for a predetermined period of time, and a preset control means for stopping a fuel supplying means when a set target flow rate is supplied. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fuel supply device, and in particular, is configured to detect a liquid level by using a negative pressure generated by a flow rate of a discharge and to supply fuel using a supply nozzle that closes a valve body. The present invention relates to a fuel supply device.

  As a fuel supply device, a liquid supply device installed in a gas station such as a gas station will be described below as an example. In recent years, a self-service type liquid supply apparatus in which a driver himself operates a liquid supply nozzle has been widely used, and a driver who is not used to operating a liquid supply nozzle often supplies fuel to an automobile.

  The liquid supply nozzle is provided with an automatic valve closing mechanism that automatically closes when the liquid level of the oil supplied to the fuel tank rises and reaches the vicinity of the liquid supply port. And the oil liquid is prevented from overflowing from the liquid supply port.

  Here, a general configuration of the liquid supply nozzle will be described. FIG. 1 is a longitudinal sectional view of a liquid supply nozzle. FIG. 2 is a cross-sectional view of the liquid supply nozzle. As shown in FIGS. 1 and 2, the liquid supply nozzle 10 includes a discharge pipe 12 that is inserted into a liquid supply port of a fuel tank of an automobile, an air introduction port 14 that is provided on the front end side of the discharge pipe 12, The valve seat 20 is provided in the middle of the liquid supply flow path communicating with the discharge pipe 12 and opens and closes in response to the nozzle lever 16 and the flow rate of the liquid discharged from the discharge pipe 12. A negative pressure generator 22 for generating a negative pressure.

  Further, the liquid supply nozzle 10 includes an air suction conduit 24 that sucks air from the air introduction port 14 by the negative pressure generated in the negative pressure generating unit 22, and a diaphragm 26 that is displaced according to the pressure of the negative pressure generating unit 22. The valve 26 is locked to the diaphragm 26, and the valve shaft 28 of the main valve body 18 is locked to the valve opening position by the valve opening operation of the nozzle lever 16, and the air inlet 14 is blocked by the liquid level, and from the air suction line 24 There is a locking member 30 that releases the locking of the valve shafts 28 and 29 of the main valve body 18 by the operation of the diaphragm 26 that is displaced when the air introduction is blocked.

  In this liquid supply nozzle 10, air is supplied from the air introduction port 14 in order to generate a negative pressure corresponding to the flow rate at the negative pressure generating unit 22 in the middle of the liquid supply in which the liquid level is separated below the discharge pipe 12. Is introduced into the negative pressure generating portion 22, and the diaphragm 26 is in a locking position where the locking members 30 hold the valve shafts 28 and 29. As the liquid level in the tank rises as the liquid is supplied, the air introduction from the air introduction port 14 stops when the air introduction port 14 is closed. The locking member 30 is moved away from the valve shafts 28 and 29 by operating in the unlocking direction by the pressure.

As a result, the valve shaft 28 moves in the axial direction with respect to the valve shaft 29 to which the nozzle lever 16 is connected, so that the main valve body 18 operates in the valve closing direction together with the valve shaft 28 and contacts the valve seat 20. Stop supplying liquid. Since the liquid supply nozzle 10 incorporates such an automatic valve closing mechanism, the liquid supply is automatically stopped when the liquid level closes the air inlet 14 even when the nozzle lever 16 is opened. be able to.
On the other hand, when the automatic valve closing mechanism of the liquid supply nozzle 10 is operated and the liquid supply is stopped, the one-digit numerical value of the liquid supply amount or the liquid supply amount displayed on the display by the driver becomes zero. In some cases, the nozzle lever 16 is opened. At that time, the driver intermittently opens the nozzle lever 16 of the liquid supply nozzle 10 so that the liquid supply amount or the amount of the liquid supply amount is made zero by performing a small amount of liquid supply multiple times. I am doing so.

As described above, when performing a combination operation for intermittently opening the nozzle lever 16 of the liquid supply nozzle 10, an extra time is required until the liquid supply is completed. As a means for shortening the time required for such a combination operation, the fractional part of the liquid supply amount is displayed and the cumulative flow rate value measured by the flow meter is changed from “.90” to “.99”. When the elapsed time is longer than the predetermined time, it is determined that the merging operation is being performed and the first stage valve of the valve mechanism is closed, and the integer liquid supply with a small flow rate is enabled by the two stage valve. Some control the valve opening (see, for example, Patent Document 1).
JP 2000-79996 A

  However, in the above-described conventional fuel supply device, the driver operates the nozzle lever of the liquid supply nozzle while viewing the accumulated flow value measured by the flow meter on the display. If you do not look at the liquid inlet, you may not notice even if the oil liquid overflows from the liquid inlet, the oil liquid overflows without the driver knowing, and the oil is sprayed on the concrete surface of the filling station There was a risk of becoming.

  In view of the above circumstances, an object of the present invention is to provide a fuel supply device that solves the above-described problems.

  In order to solve the above problems, the present invention has the following means.

The present invention has an air inlet that discharges fuel at a flow rate corresponding to the valve opening of a valve element that opens or closes by operating a nozzle lever, and introduces air by a negative pressure generated by the flow rate of the fuel. A liquid supply nozzle having an automatic valve closing mechanism for releasing the lock of the valve portion of the valve body by closing the liquid surface and closing the valve portion, and a fuel for supplying fuel to the liquid supply nozzle A fuel supply device having a supply means and a flow meter for measuring a flow rate of fuel supplied from the fuel supply means, reads a flow rate by the flow meter, and supplies a liquid having a predetermined low flow rate or less from the flow rate for a predetermined time. A low flow rate determination unit that determines whether or not the flow rate is low, and when the low flow rate determination unit determines that the liquid supply of the low flow rate or lower continues for a predetermined time, a numerical value that is an integer after that Target flow rate setting means to set as target flow rate By providing a preset control means for stopping the fuel supply means when the target flow rate set by the target flow rate setting means is supplied, the is intended to solve the above problems.
The present invention has an air inlet that discharges fuel at a flow rate corresponding to the valve opening of a valve element that opens or closes by operating a nozzle lever, and introduces air by a negative pressure generated by the flow rate of the fuel. A liquid supply nozzle having an automatic valve closing mechanism for releasing the lock of the valve portion of the valve body by closing the liquid surface and closing the valve portion, and a fuel for supplying fuel to the liquid supply nozzle A fuel supply device having a supply means and a flow meter for measuring a flow rate of fuel supplied from the fuel supply means, reads a flow rate by the flow meter, and supplies a liquid having a predetermined low flow rate or less from the flow rate for a predetermined time. A low flow rate determination means for determining whether or not the liquid flow is continued, and when it is determined by the low flow rate determination means that the liquid supply at the low flow rate or lower continues for a predetermined time, the subsequent liquid supply amount and unit price Aim for a figure where the fraction of the amount of money obtained from is zero A target amount setting means for setting as a sum, and a preset control means for stopping the fuel supply means when a flow rate corresponding to the target amount set by the target amount setting means is supplied. To do.
The present invention has an air inlet that discharges fuel at a flow rate corresponding to the valve opening of a valve element that opens or closes by operating a nozzle lever, and introduces air by a negative pressure generated by the flow rate of the fuel. A liquid supply nozzle having an automatic valve closing mechanism for releasing the lock of the valve portion of the valve body by closing the liquid surface and closing the valve portion, and a fuel for supplying fuel to the liquid supply nozzle A fuel supply device having a supply means and a flow meter for measuring a flow rate of fuel supplied from the fuel supply means, reads a flow rate by the flow meter, and supplies a liquid having a predetermined low flow rate or less from the flow rate for a predetermined time. A low flow rate determination unit that determines whether or not the flow rate is low, and when the low flow rate determination unit determines that the liquid supply of the low flow rate or lower continues for a predetermined time, a numerical value that is an integer after that Target flow rate setting means to set as target flow rate When the low flow rate determining means determines that the liquid supply below the low flow rate has continued for a predetermined time, the target amount is a numerical value at which the fraction of the amount obtained from the subsequent liquid supply amount and unit price becomes zero Target amount setting means to be set, and preset control for stopping the fuel supply means when a target flow rate set by the target flow rate setting means or a flow rate corresponding to the target amount set by the target amount setting means is supplied And the merge mode designation means for designating either the target flow rate setting means or the target amount setting means.
According to the present invention, the low flow rate determining means operates the flow meter after a predetermined time has elapsed or a predetermined amount of liquid has been reached after the nozzle lever of the liquid supply nozzle is opened to start supplying liquid. The above-described problem is solved by determining whether or not a liquid supply whose measured flow rate is equal to or lower than a preset low flow rate continues for a predetermined time.

  According to the present invention, when it is determined that the liquid supply equal to or lower than the preset low flow rate has continued for a predetermined time, a numerical value that is an integer thereafter is set as the target flow rate, and the target flow rate is supplied. In order to stop the fuel supply means when the so-called merging operation after stopping the liquid supply by the automatic valve closing mechanism of the liquid supply nozzle is set so that the fraction of the liquid supply amount or the liquid supply amount becomes zero Preset control for automatically stopping the liquid supply can be performed, and the combination can be performed without looking at the flow rate indicator. For this reason, the operator can automatically perform the combination without stopping the supply port and the supply nozzle of the fuel tank and stop the supply of the liquid, so that the oil does not overflow from the supply port. In the unlikely event that the oil liquid is likely to overflow, it is possible to prevent the oil liquid from overflowing by returning the nozzle lever of the liquid supply nozzle to the valve closing position.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 3 is a block diagram showing an embodiment of the fuel supply apparatus according to the present invention. As shown in FIG. 3, the fuel supply device 100 includes a self-service weighing machine in which a driver (customer) himself performs a liquid supply operation. A liquid supply hose 140 connected to the liquid supply nozzle 130 is drawn out on the side surface of the housing 120 of the fuel supply apparatus 100. The liquid supply nozzle 130 is normally hooked on a nozzle hook 150 provided on the side surface of the casing 120. For example, when the customer's vehicle 160 arrives at a gas station, the liquid supply nozzle 130 is detached from the nozzle hook 150. Then, it is inserted into the liquid supply port 160b of the fuel tank 160a of the vehicle 160.

  The nozzle switch 150a provided on the nozzle hook 150 is turned on when the liquid supply nozzle 130 is removed from the nozzle hook 150, and is turned on when the liquid supply nozzle 130 is returned to the nozzle hook 150. Switch.

  The liquid supply hose 140 is connected to a liquid supply pipe line (liquid supply path) 170 that forms a liquid supply system path in the housing 120 via a joint 142. The leading end 170a of the liquid supply pipe line 170 is extended and inserted to an underground tank 180 as an oil liquid storage tank. A flow meter 190 and a liquid supply pump 200 are disposed in the middle of the liquid supply pipe line 170. Has been. In addition, a flow rate control valve 230 for controlling the supply of the oil supplied to the liquid supply nozzle 130 is disposed in the liquid supply pipe line 170. The flow rate control valve 230 has an actuator for adjusting the valve opening degree of the valve body, and is configured to control the flow rate supplied to the liquid supply nozzle 130 by a control signal input to the actuator. .

  In addition, the underground tank 180 is provided for every oil type, for example, regular gasoline is stored, and the underground tanks of other oil types are also provided separately although not shown. Further, in the fuel supply apparatus 100, a plurality of liquid supply nozzles are provided for each oil type, but in FIG. 3, only one liquid supply nozzle 130 is shown for convenience of explanation. In addition, the liquid supply nozzle 130 has an automatic valve closing mechanism that releases the locking of the main valve using the negative pressure generated according to the flow rate, like the liquid supply nozzle 10 shown in FIGS. 1 and 2 described above. Since it is configured, description of the configuration is omitted.

  When the liquid supply nozzle 130 is removed from the nozzle hook 150, the nozzle switch 150a is turned on and the liquid supply pump 200 is activated. When the discharge pipe 132 of the liquid supply nozzle 130 is inserted into the liquid supply port 160b, the liquid can be supplied by opening the nozzle lever (see FIGS. 1 and 2) of the liquid supply nozzle 130.

  The control device (control means) 250 is supplied with each signal output from the nozzle switch 150a and the pulse transmitter 190a of the flow meter 190, and performs a predetermined calculation process to perform the pump motor 200a of the feed pump 200 and the flow rate. The control valve 230 is controlled, and the current liquid supply amount measured by the flow rate indicator 270 is displayed. A control program (low flow rate determination means) that reads the flow rate from the flow meter 190 into the memory 252 of the control device 250 and determines whether or not the supply liquid below a predetermined low flow rate continues for a predetermined time from the flow rate. When it is determined that the liquid supply below the low flow rate has continued for a predetermined time, a control program (target flow setting means) that sets a numerical value that is an integer after that as a target flow rate, and the set target flow rate is A control program (preset control means) for stopping the fuel supply means when supplied is stored.

  Here, control processing executed by the control device 250 will be described. FIG. 4 is a main flowchart for explaining a control process executed by the control device 250. FIG. 5 is a flowchart for explaining a subroutine of the low flow rate determination process of S18.

  In S11 of FIG. 4, the control device 250 checks whether the nozzle switch 150a is on. When the driver (customer) removes the liquid supply nozzle 130 from the nozzle hook 150, the nozzle switch 150a is turned on (in the case of YES), so the process proceeds to S12 and the display of the flow rate display 270 is reset to zero.

  In the next S13, the pump motor 200a of the liquid supply pump 200 is activated to pump up the oil in the underground tank 180. Then, it progresses to S14 and the flow control valve 230 is opened (valve opening degree full open). Then, after the driver inserts the discharge pipe 132 of the liquid supply nozzle 130 into the liquid supply port 160b, the liquid supply at a large flow rate is started by operating the nozzle lever of the liquid supply nozzle 130 in the valve opening direction.

  In next S15, the target liquid supply amount Q is set to zero (not set), and the low flow rate determination time T is set to zero.

  Subsequently, the process proceeds to S16, and when the nozzle lever of the liquid supply nozzle 130 is operated to open the liquid supply, the flow rate pulse output from the pulse transmitter 190a of the flow meter 190 is integrated to measure the flow rate. To do.

  In S <b> 17, the flow rate measurement value measured together with the start of liquid supply is displayed on the flow rate display 270. In the next S18, the low flow rate determination process for determining whether or not the flow rate measurement value measured by the flow meter 190 is below a preset low flow rate (meaning a low flow rate range not including zero). (Details will be described later).

  When the low flow rate determination process of S18 (details are shown in FIG. 5) is completed, the process proceeds to S19, where it is checked whether or not the measured integrated flow rate is equal to the target liquid supply amount (target amount). As the target liquid supply amount in S19, a value obtained by adding 1.00 to the current liquid supply amount rounded down in S37 of the low flow rate determination process described later is set as the target liquid supply amount Q.

  In S19, when the measured integrated flow rate does not reach the target liquid supply amount Q (in the case of NO), the process proceeds to S20, in which it is checked whether the nozzle switch 150a is off, and the nozzle switch 150a is on (NO In the case of (5), the process returns to S16, and the processes after S16 are repeated. In S20, when the nozzle switch 150a is OFF (in the case of YES), since the liquid supply nozzle 130 has been returned to the nozzle hook 150, it is determined that the liquid supply has ended, and the flow proceeds to S21, where the flow control valve 230 is closed, the energization to the pump motor 200a of the liquid supply pump 200 is stopped, and the current liquid supply process is terminated.

  In S19, when the measured integrated flow rate is equal to the target liquid supply amount Q (in the case of YES), the liquid supply amount (integrated flow rate) measured by the flow meter 190 reaches the target liquid supply amount Q. Therefore, the process proceeds to S22, the flow control valve 230 is closed, and energization of the pump motor 200a of the liquid supply pump 200 is stopped. Thereby, the liquid supply amount at the end of the liquid supply becomes an integer value not including a fraction. Further, in S23, it is checked whether or not the nozzle switch 150a is off. When the nozzle switch 150a is off (in the case of NO), a standby state is entered, and the nozzle switch 150a is on (in the case of YES). In some cases, since the liquid supply nozzle 130 has been returned to the nozzle hook 150, it is determined that the liquid supply has ended, and the current liquid supply process ends.

  Here, the details of the low flow rate determination processing in S18 will be described. In S31 of FIG. 5, it is checked whether or not the target liquid supply amount Q is zero (not set: full tank liquid supply mode). In S31, when the target liquid supply amount Q is not zero (in the case of NO), it is determined that the target liquid supply amount has been set, and the low flow rate determination process is terminated.

  In S31, when the target liquid supply amount Q is zero (in the case of YES), since the target liquid supply amount Q is not set, the process proceeds to S32 and is output from the pulse transmitter 190a of the flow meter 190. The flow velocity is calculated from the cycle of the flow rate pulse or the number of pulses per unit time.

  Subsequently, in S33, it is checked whether or not the calculated flow velocity is greater than or equal to a preset lower limit determination value and less than or equal to a preset upper limit determination value. In S33, when the current flow rate is not in the low flow rate range (not including zero) that is greater than or equal to the lower limit determination value and less than or equal to the upper limit determination value (in the case of NO), the valve opening degree of the liquid supply nozzle 130 is fully open. Since the combining operation has not yet been performed by the liquid supply nozzle 130, the process proceeds to S34, and the low flow rate determination time T is set to zero.

  In S33, when the current flow velocity is in the low flow rate range (not including zero) that is greater than or equal to the lower limit determination value and less than or equal to the upper limit determination value (in the case of YES), the operation of combining with the liquid supply nozzle 130 is performed. If it is determined that the operation is being performed, the process proceeds to S35, and 1 is added to the low flow rate determination time T.

  Subsequently, in S36, it is checked whether or not the low flow rate determination time T has reached the determination time t. In S36, when T <t (in the case of NO), since the low flow rate determination time T has not reached the determination time t, the current low flow rate determination process is terminated. For example, when the number of times of processing in S35 is 1, if t = 5 with respect to the low flow rate determination time T = 1, since (T <t), the current low flow rate determination process is terminated. The process of S36 corresponds to a process of determining whether the liquid supply within the low flow rate range (excluding zero) continues for a predetermined time, and can accurately determine the presence or absence of the merging operation. it can. The reason why the low flow rate range does not include zero is, for example, to prevent erroneous determination that the liquid supply operation is not performed immediately after the liquid supply nozzle 130 is removed from the nozzle hook 150 as a combined operation. It is.

  In S36, when T ≧ t (in the case of YES), since the low flow rate determination time T has reached the determination time t or more, it is determined that the merging operation is performed at the liquid supply nozzle 130. Then, the process proceeds to S37. For example, when t = 5 is set, the process of S35 is repeated five times. When T = 5, T = 5 (T ≧ t) with respect to t = 5, and thus the process proceeds to S37.

  In S37, a value obtained by adding 1.00 to the current liquid supply amount rounded down after the decimal point is set as the target liquid supply amount. Thereby, the target liquid supply amount Q is a numerical value that becomes a reference value to be compared with the liquid supply amount in S19 described above, and a numerical value that becomes the next integer is set from the numerical value of the current liquid supply amount. For example, if the current liquid supply amount is 29.3 liters, 30.0 obtained by adding 1.0 to 29.0 is set as the target liquid supply amount Q. Thus, the target liquid supply amount Q in S19 is always set to an integer value.

  In next S38, the valve opening degree of the flow control valve 230 is reduced to a small flow rate, and the flow rate discharged from the liquid supply nozzle 130 is decreased. This completes the low flow rate determination process and returns to the process of S19 described above.

By this low flow rate determination processing, the target liquid supply amount is set to the target liquid supply amount Q by adding 1.00 to the current liquid supply amount that has been rounded down in S37. When the charging operation is performed, preset control can be performed so that the liquid supply is always stopped at an integer value with no fraction. Therefore, even when an operator who operates the liquid supply nozzle 130 operates the liquid supply nozzle 130 without looking at the liquid supply port 160b, it is possible to prevent the oil liquid from overflowing from the liquid supply port 160b.
Next, a modified example will be described. FIG. 6 is a flowchart showing Modification 1 of the low flow rate determination process. In FIG. 6, the same processes as those in FIG. 5 described above are denoted by the same reference numerals, and the description thereof is omitted.

  In S37a of FIG. 6, calculation is performed so that the fraction of the target amount is zero. In the first modification, it is checked in S19 whether or not the liquid supply amount has reached the target amount.

  In S37a, first, the current liquid supply amount is calculated by multiplying the liquid supply amount by the unit price. Next, the current liquid supply amount is divided by 100 to obtain a provisional amount. At this time, the numerical value after the decimal point is rounded down. Next, the provisional amount is multiplied by 100 so that the fraction of the current liquid supply amount becomes zero, and 100 is further added to obtain the target amount with the fraction being zero.

  Next, the target amount is calculated by dividing the target amount by the unit price. Thereby, in the modified example 1, in S19, the preset control can be performed using the target liquid supply amount in which the fraction of the liquid supply amount is zero, and the liquid supply with the fraction of the liquid supply amount being zero is possible. Become.

  FIG. 7 is a flowchart showing a second modification of the low flow rate determination process. In FIG. 7, the same processes as those of FIG. 5 described above are denoted by the same reference numerals and description thereof is omitted.

In S37b to S37d of FIG. 7, when either one of the money amount selection button 310 or the liquid supply amount selection button 320 of the selection switch (merging mode specifying means) 300 indicated by a broken line in FIG. The preset control mode can be designated so as to selectively perform preset control with the amount of money as a target amount or preset control with the amount of liquid supply as a target amount.
If the supply amount selection button 320 of the selection switch 300 is turned on in S37b, the process proceeds to S37c, and 1.00 is added to the current supply amount that is rounded down after the decimal point as in S37 described above. Set the target value to the target liquid supply amount.

  In S37b, if the money amount selection button 310 is turned on, the process proceeds to S37d, and the calculation is performed so that the fraction of the target money amount becomes zero as in S37a described above.

  As described above, in the second modification, by operating the money amount selection button 310 or the liquid supply amount selection button 320, preset control with the liquid supply amount as the target amount or preset control with the liquid supply amount as the target amount is designated. Therefore, preset control according to the operator's preference can be performed.

  FIG. 8 is a flowchart showing a third modification of the low flow rate determination process. In FIG. 8, the same processes as those of FIG. 5 described above are denoted by the same reference numerals, and the description thereof is omitted.

  In S31a of FIG. 8, when the target amount is zero (not set) and the liquid supply amount is equal to or larger than the predetermined determination start amount (in the case of YES), the process proceeds to S32, and the processes after S32 described above are executed. . In S31a, when the target amount is not zero (not set) or the liquid supply amount is less than the predetermined determination start amount (in the case of NO, that is, the nozzle lever of the liquid supply nozzle is opened). If the liquid supply amount after the start of liquid supply is less than the determination start amount), the flow returns to S19 without performing the low flow rate determination process.

  In S31a, when the target amount is zero (not set) or the liquid supply amount is equal to or greater than a predetermined determination start amount (in the case of YES, that is, the nozzle lever of the liquid supply nozzle is opened). In the case where the liquid supply amount after the liquid supply is started is equal to or greater than the determination start amount), the above-described processing after S32 is executed.

  As a result, since the low flow rate determination process is not performed until the liquid supply amount reaches a predetermined amount (determination start amount) from the start of the liquid supply, the flow rate may be increased due to a lever operation immediately after the liquid supply starts or an automatic valve closing mechanism malfunctioning. An unstable situation can be excluded. Therefore, even when a driver unfamiliar with the operation of the liquid supply nozzle 130 operates, it is possible to reliably perform the low flow rate determination process during the merging operation.

  In the present embodiment, the low flow rate determination process is performed when the liquid supply amount after the nozzle lever of the liquid supply nozzle is opened to supply the liquid is less than the determination start amount. However, instead of this, the low flow rate determination process is performed when the elapsed time from the start of the liquid supply by opening the nozzle lever of the liquid supply nozzle exceeds the predetermined elapsed time. May be.

  In the above embodiment, the fuel supply device installed in the fueling station has been described as an example. However, the present invention is not limited to this, and the present invention can also be applied to a fuel supply device installed in a facility other than the fueling station. Of course.

  In the above embodiment, the fuel supply device for supplying an oil liquid such as gasoline or light oil has been described. However, the present invention can be applied to a case of supplying a liquid fuel other than the oil liquid. is there.

It is a longitudinal cross-sectional view of a liquid supply nozzle. It is a cross-sectional view of a liquid supply nozzle. It is a block diagram which shows one Example of the fuel supply apparatus by this invention. 3 is a main flowchart for explaining a control process executed by control device 250. It is a flowchart for demonstrating the subroutine of the low flow volume determination process of S18. It is a flowchart which shows the modification 1 of a low flow volume determination process. It is a flowchart which shows the modification 2 of a low flow volume determination process. It is a flowchart which shows the modification 3 of a low flow volume determination process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Fuel supply apparatus 130 Liquid supply nozzle 150 Nozzle hook 150a Nozzle switch 160 Vehicle 160a Fuel tank 160b Liquid supply port 170 Liquid supply line 180 Underground tank 190 Flowmeter 200 Liquid supply pump 230 Flow control valve 250 Control apparatus (control means)
252 Memory 270 Flow rate display 300 Selection switch 310 Amount selection button 320 Supply amount selection button

Claims (4)

Discharges fuel at a flow rate corresponding to the valve opening of the valve element that opens or closes by operating the nozzle lever, and the air inlet that introduces air by the negative pressure generated by the flow rate of the fuel is blocked at the liquid level A liquid supply nozzle having an automatic valve closing mechanism for releasing the locking of the valve portion of the valve body and closing the valve portion;
Fuel supply means for supplying fuel to the liquid supply nozzle;
A flow meter for measuring the flow rate of fuel supplied from the fuel supply means;
In a fuel supply device having
Low flow rate determination means for reading a flow rate by the flow meter and determining whether or not a liquid supply of a predetermined low flow rate or less from the flow rate continues for a predetermined time;
When it is determined by the low flow rate determination means that the liquid supply below the low flow rate has continued for a predetermined time, target flow rate setting means for setting a numerical value that is an integer after that as a target flow rate;
Preset control means for stopping the fuel supply means when the target flow rate set by the target flow rate setting means is supplied;
A fuel supply device comprising: Discharges fuel at a flow rate corresponding to the valve opening of the valve element that opens or closes by operating the nozzle lever, and the air inlet that introduces air by the negative pressure generated by the flow rate of the fuel is blocked at the liquid level A liquid supply nozzle having an automatic valve closing mechanism for releasing the locking of the valve portion of the valve body and closing the valve portion;
Fuel supply means for supplying fuel to the liquid supply nozzle;
A flow meter for measuring the flow rate of fuel supplied from the fuel supply means;
In a fuel supply device having
Low flow rate determination means for reading a flow rate by the flow meter and determining whether or not a liquid supply of a predetermined low flow rate or less from the flow rate continues for a predetermined time;
When it is determined by the low flow rate determination means that the liquid supply below the low flow rate has continued for a predetermined time, a numerical value at which the fraction of the amount obtained from the subsequent liquid supply amount and unit price becomes zero is set as the target amount Target amount setting means to
Preset control means for stopping the fuel supply means when a flow rate corresponding to the target money amount set by the target money amount setting means is supplied;
A fuel supply device comprising: Discharges fuel at a flow rate corresponding to the valve opening of the valve element that opens or closes by operating the nozzle lever, and the air inlet that introduces air by the negative pressure generated by the flow rate of the fuel is blocked at the liquid level A liquid supply nozzle having an automatic valve closing mechanism for releasing the locking of the valve portion of the valve body and closing the valve portion;
Fuel supply means for supplying fuel to the liquid supply nozzle;
A flow meter for measuring the flow rate of fuel supplied from the fuel supply means;
In a fuel supply device having
Low flow rate determination means for reading a flow rate by the flow meter and determining whether or not a liquid supply of a predetermined low flow rate or less from the flow rate continues for a predetermined time;
When it is determined by the low flow rate determination means that the liquid supply below the low flow rate has continued for a predetermined time, target flow rate setting means for setting a numerical value that is an integer after that as a target flow rate;
When it is determined by the low flow rate determination means that the liquid supply below the low flow rate has continued for a predetermined time, a numerical value at which the fraction of the amount obtained from the subsequent liquid supply amount and unit price becomes zero is set as the target amount Target amount setting means to
Preset control means for stopping the fuel supply means when a target flow rate set by the target flow rate setting means or a flow rate corresponding to the target money amount set by the target money amount setting means is supplied;
A fuel supply apparatus comprising: a combination mode designating unit that designates either the target flow rate setting unit or the target amount setting unit.   The low flow rate determining means is a flow rate measured by the flow meter after a predetermined time has elapsed after reaching a predetermined liquid supply amount after opening the liquid supply nozzle by opening the nozzle lever of the liquid supply nozzle. 4. The fuel supply device according to claim 1, wherein it is determined whether or not a liquid supply with a flow rate equal to or lower than a preset low flow rate continues for a predetermined time.

Images