JPH0375436B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention allows a user to set a desired oil supply amount as a preset amount by operating a preset amount designation switch consisting of a single switch provided in the middle of a refueling nozzle or a hose, and to set the desired amount of oil supply as a preset amount. The present invention relates to a refueling device that can notify the amount of fuel.

Conventionally, refueling devices that allow gas station workers to preset the amount of refueling to be refueled to a vehicle while holding the refueling nozzle in their hands have been equipped with a number of devices near the refueling nozzle in order to set the desired preset amount. Some types are known, such as those equipped with a switch box with an array of preset switches, and those equipped with a preset dial near the refueling nozzle.

However, because the refueling system handles dangerous substances such as gasoline, the switchbox must have an explosion-proof structure. Because of the preset dial, the refueling nozzle was not only easy to operate, but also had the disadvantage that the switchbox or the like could collide with the vehicle and strip the vehicle's paint. Furthermore, the number of signal lines increases, which complicates the intrinsically safe explosion-proof circuit and causes an increase in disconnection accidents.

SUMMARY OF THE INVENTION An object of the present invention is to provide a fuel supply device that solves the drawbacks of the conventional oil supply device described above, reduces the size of the switch box in which a preset switch is provided, and improves the operability of the fuel nozzle. It is.

In order to achieve this object, the present invention provides a pump and a flow meter in the middle of a pipe that connects to a tank at one end, connects a hose having a refueling nozzle at the tip to the other end of the pipe, and uses the flow meter to connect a hose to the other end of the pipe. A refueling device comprising a display meter for displaying the measured amount of refueling at a position easily visible to the customer, comprising a single switch provided at the refueling nozzle or in the middle of a hose near the refueling nozzle, the switch being operated. A preset amount designation switch that specifies a preset amount for each tank, and a plurality of refueling amounts including a full tank amount are memorized in advance as preset amounts, and when the refueling nozzle is set to a refueling state, the full tank amount is selected from among the plurality of preset amounts. preset amount designation means for specifying the preset amount by sequentially scanning the plurality of preset amounts one by one each time the preset amount designation switch is operated; a preset amount indicator that notifies one refueling amount as a preset amount; a storage means that sets and stores one preset amount specified by the preset amount designation means; and a refueling amount measured by the flowmeter during refueling. and a refueling stop control means for outputting a refueling stop signal by comparing the amount with a preset amount set and stored in the storage means, and a refueling stop means for stopping refueling in response to a refueling stop signal from the refueling stop control means. It is characterized by what it did.

According to the present invention, when the refueling nozzle is ready for refueling, the preset specifying means specifies the full tank amount, which is the largest preset amount among a plurality of preset amounts, causes the preset amount indicator to notify the full tank amount, and normally Refueling or full tank refueling is possible.On the other hand, when performing preset refueling, multiple refueling amounts are sequentially scanned one by one as preset amounts in accordance with the operation of a preset amount designation switch consisting of a single switch, and the preset amount is set. This is notified by the alarm and stored in the storage means, so that each time the fuel station operator operates the preset amount designation switch, he or she can set the desired amount of refueling as the preset amount.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a case in which the oil supply system of the present invention is applied to a suspended type oil supply system will be described together with embodiments shown in the drawings.

In FIG. 1, a building 2 including an office and the like is provided on a gas station site 1, and an elevated area 3 consisting of a ceiling, beams, canopy, etc. is formed above the building 2. A pipe 4 is provided along the building 2, one end of the pipe 4 opens into a tank 5 installed underground in the site 1, and the other end is connected to a hose elevator to be described later. In the middle of the piping 4, there is a pump 7 driven by a pump drive motor 6, a meter 8 that measures the amount of oil to be supplied, and a valve that opens in response to a signal from a control circuit to be described later, when a preset amount is reached. A stop valve 9 is provided as a refueling stop means for closing, and a flow rate transmitter 10 is attached to the flow meter 8 for transmitting a flow rate signal proportional to the amount to be measured.

Further, a hose elevator 11 is installed at the high place 3, and the hose elevator 11 is composed of a rotatably provided hose reel 12 and a hose elevator motor 13 that rotates the hose reel 12 in forward and reverse directions. One end of the piping 4 is connected to the hose reel 12, and a hose 14 is wound thereon, and a refueling nozzle 15 is attached to the tip of the hose 14. On the other hand, a switch box 16 for detecting the nozzle position is provided in the hose elevator 11, and a motor 13 is installed in the switch box 16.
Alternatively, a switch ( (not shown) is built-in.

A switch box 17 is provided at the refueling nozzle 15 or at a position near the refueling nozzle 15 in the middle of the hose 14, and the switch box 17 includes a lowering switch 18 for lowering the refueling nozzle 15 from the standby position B to the refueling position C. , a lift switch 19 that raises the refueling nozzle 15 from the refueling position C to the standby position B, and a single preset amount designation switch 20 that designates the preset amount by an operation described below. 20 is connected to a control circuit 27, which will be described later, via a signal line 21 wound around the hose 14, and the lowering switch 18 is provided with an operating string 22.

On the other hand, 23 is a display case set in a position that is easy for customers to see, such as at a high place in the building 2. Inside the display case 23, there is a display meter 24 for displaying the amount of refueling measured by the flowmeter 8; A preset amount indicator 25 is provided which, when a predetermined amount of refueling is designated by the preset amount designation switch 20, displays the refueling amount as a preset amount by emitting light or emitting sound. Here, as the display meter 24, an electrical display such as a reversing plate display, a liquid crystal display, a light emitting diode display, etc. is used. Also,
The preset amount indicator 25 indicates "10", "20", "30",
5 alarms 2 that display or vocalize "40" and "Full tank" (corresponding to the full tank level of 50)
5A, 25B, 25C, 25D, and 25E, each of these alarms 25A to 25E is composed of a lamp, a light emitting diode, a liquid crystal, etc. in the case of a light emitting display method, and a speaker in the case of an audible method. (The following description assumes that a lamp is used). Then, when the refueling nozzle 15 reaches the refueling position C, the preset amount indicator 25 lights up only the indicator 25E that indicates "Full" among the indicators 25A to 25E, and performs normal operations other than preset refueling. In preparation for refueling work, when a desired amount of refueling is designated by the number of times the preset amount designation switch 20 is operated, one indicator continues to display the refueling amount as the preset amount, and the preset amount is stored in a control circuit to be described later. .

Next, a control panel 26 is provided in an office or the like of the building 2, and a control circuit 27 shown in FIG. 2 is provided within the control panel 26. The control circuit 27 executes calculations according to a predetermined program, and receives the count signal from the calculation processing circuit 28, which constitutes the preset amount designation means, the refueling stop control means, and the storage means according to the present invention. When the refueling nozzle 15 reaches the refueling position, the display meter drive circuit 29 that drives each digit of the display meter 24 lights up the "full" indicator 25E, which indicates the maximum refueling amount, and the preset amount is specified. An alarm drive circuit 30 that keeps the alarm lit when the alarm occurs, an electromagnetic relay 31 that opens and closes between the pump drive motor 6 and the power source E, and an electromagnetic relay 31 that opens and closes between the lifting motor 13 and the power source E and It is composed of a lifting motor drive circuit 32 and the like that rotates the motor 13 in forward and reverse directions. The arithmetic processing circuit 28 includes a main lift switch (not shown) that raises and lowers the refueling nozzle 15 between the storage position A and the standby position B, the stop valve 9, and the flow rate transmitter 1.
0, each position detection switch in the switch box 16, lowering switch 1 in the switch box 17
8, rise switch 19, preset amount designation switch 20, each drive circuit 29, 30, electromagnetic relay 3
1. Connected to the lifting motor drive circuit 32.

Here, the arithmetic processing circuit 28 opens and closes the main lifting switch, each position detection switch in the switch box 16, the lowering switch 18, and the raising switch 19, thereby driving the hose lifting motor 13 via the lifting motor drive circuit 32. Elevation control function for forward and reverse rotation, and preset amount designation switch 2
0, the specified preset amount is memorized, the flow rate signal from the flow transmitter 10 is counted, and the amount of oil supplied is compared with the preset amount to determine whether the amount of oil supplied is the preset amount. or when the so-called overshoot amount is subtracted from the preset amount, a refueling stop signal is output and the stop valve 9 is closed, and the refueling nozzle 15
This function opens the stop valve 9 when it reaches the refueling position C and closes it when it reaches the standby position B. It also displays the amount of refueling on the display meter 24 via the display meter drive circuit 29, and also displays the amount of refueling for the next time. A function to reset to zero when the refueling nozzle 15 reaches the refueling position C during refueling, and a function to reset the preset amount indicator 2 via the alarm drive circuit 30.
5, and a function of driving the pump drive motor 6 via the electromagnetic relay 31 when the refueling nozzle 15 is at the refueling position C, and stopping it when the refueling nozzle 15 is at the standby position B.

The oil supply system of the present invention is constructed as described above, and its operation will now be explained with reference to the flowchart shown in FIG. 3.

It is now assumed that the main lift switch has been operated and the refueling nozzle 15 is in the standby position B.

First, to lower the refueling nozzle 15 to the refueling position C, pull the string 22 as in STEP 1 and close the lowering switch 18.
The lifting motor 13 rotates downward via the
When the refueling position C is reached as shown in STEP 3, the position detection switch in the switch box 16 is opened and the rotation of the motor 13 is stopped. When the refueling position C is reached, the pump drive motor 6 starts driving via the electromagnetic relay 31 as shown in the next STEP 4, and the stop valve 9 opens, and the display meter 2 changes in STEP 5.
The previous displayed value displayed at 4 is reset to zero.

Further, when the refueling nozzle 15 reaches the refueling position C as shown in STEP 6, the arithmetic processing circuit 28
A flag indicating "full tank" is set in the preset processing area constituting the preset amount designation means, and an indicator 25E indicating "full tank" lights up from the preset processing area toward the alarm drive circuit 30. On the other hand, I is 0, 10, 20, 30, 40, 50 (I=0, I=
50 corresponds to "full tank"), then at the same time as the refueling position C, I=0 in the preset processing area of the arithmetic processing circuit 28 as shown in STEP 7.
The process is executed, and as described above, the flag indicating "full tank" is set and the output is stopped except for the signal that lights up the alarm 25E.

Next, in STEP 8, turn the preset amount specification switch 2.
The operation when operating 0 will be described. In this case, when the switch 20 is pressed once, twice, three times, etc., in the preset processing area of the arithmetic processing circuit 28, as shown in STEP 9, based on the formula I=(I+10), I=10, Calculations of 20, 30, etc. are performed. Now, if the determination as to whether I=50 is YES in STEP 10, it means that the preset amount designation switch 20 has been pressed 5n times (n=1, 2, 3, . . . ). As a result, as shown in STEP 11, a flag indicating "full tank" is set in the preset processing area, and in STEP 12, I=0.
The update process is performed, and a signal to turn on the alarm 25E is output to the alarm drive circuit 30, and step 13
The lamp indicating "Full" lights up.

On the other hand, if the determination as to whether I=50 in STEP 10 is NO, it means that the preset amount designation switch 20 has been pressed an arbitrary number of times other than 5n times. As a result, the arithmetic processing circuit 28
As shown in STEP 14, the flag indicating "full tank" disappears, and in STEP 15, I is calculated as the preset amount, and in STEP 16, a signal is sent to the alarm drive circuit 30 to light the lamp corresponding to I among the alarms 25A to 25D. is output. Further, I as the preset amount is transferred to a predetermined area of the refueling amount comparison circuit region of the arithmetic processing circuit 28, which constitutes the refueling stop control means, and is stored therein.

However, first, we will describe the operation when the refueling nozzle 15 is inserted into the fuel tank of the vehicle and the refueling nozzle 15 is opened immediately to perform normal refueling work without operating the preset amount designation switch 20 in STEP 8. That is, as shown in STEP 3 to 7, when the refueling nozzle 15 is lowered to the refueling position C, the display meter 24 is reset to zero and the tank is "full".
A flag indicating the amount is raised, and the preset amount indicator 25
is the alarm 25 corresponding to the maximum refueling amount (full tank amount)
Since E is lit, when the oil supply nozzle 15 is opened, the oil in the tank 5 is supplied via the pipe 4, pump 7, flow meter 8, stop valve 9, and hose 14. As a result, as shown in STEP 17, the first flow rate signal from the flow rate transmitter 10 is transmitted to the arithmetic processing circuit 2.
8, the flow rate signal is sent to the arithmetic processing circuit 2.
8, and the instantaneous flow rate is measured by the display drive circuit 29.
is displayed on the display meter 24 via. When the desired amount of refueling is reached, the refueling nozzle 15 is closed to complete refueling of one vehicle. After that, when the lift switch 20 is closed in STEP 20, the hose lifting motor 13 rotates upward, and as in STEP 21 and 22, the pump drive motor 6 is stopped and the stop valve 9 is closed, and the standby position B is reached. The first refueling work is completed,
Prepare for the next refueling operation.

On the other hand, the operation in the case where the preset amount designation switch 20 is operated a predetermined number of times in STEP 8 without immediately opening the refueling nozzle 15 as described above will be described. First, when the refueling operator presses the preset amount designation switch 20 once, the variable I is updated in STEP 9 and I=10 is calculated, and I=10 is calculated as the preset amount in STEP 14 and 15, and the preset amount is The alarms 25A to 25E of the alarm 25 are scanned from 25E to 25A in STEP 16, the alarm 25A is selected, and the lamp is lit. By this, 10
This means that the refueling amount has been specified, and 10 is also stored as the preset amount in the predetermined area of the refueling amount comparison circuit area of the arithmetic processing circuit 28.
Therefore, after I=0 is processed in STEP 7, when the gas station operator presses the preset amount designation switch 20, for example, three times, STEPs 8, 9, 10,
By repeating steps 14, 15, 16, and 17, the preset amount is updated and I=30 is calculated, and the alarms 25A to 25E of the preset amount indicator 25 change from 25E to 25.
Lighting is scanned in the order of A→25B→25C. As a result, the oil supply amount of 30 is specified, and along with this, the preset amount of 30
will be memorized. If you wish to change the preset amount before refueling, operate the preset amount designation switch 20 again and press it 4 and 5 times to update the variable I in sequence.
When I = 50, follow STEP 10 to 13 to "fill up"
A flag indicating "Full Tank" is displayed, and the "Full Tank" indicator 2 is displayed.
Since 5E lights up and I=0,
If the switch 20 is pressed again two more times (seven times in total) in STEP 8, the preset amount will be sequentially updated and can be changed to I=20.

Next, when the refueling nozzle 15 is inserted into the fuel tank of the vehicle and the valve is opened, refueling is performed in the same manner as in the normal refueling operation described above. The flow rate signal from the flow rate transmitter 10 is input to the arithmetic processing circuit 28, and the instantaneous flow rate is displayed on the display meter 24. In addition, at this time, as shown in STEP 19, the flag indicating "full tank" is not set, so as shown in STEP 23, the preset amount and A comparison is made with the actual amount of oil supplied. The amount of oil supplied is the preset amount (30
), a refueling stop signal is sent to the stop valve 9, and the stop valve 9 is closed for a fixed amount. This results in 30
This means that refueling with the preset amount has been completed. Thereafter, when the lift switch 19 is closed in STEP 25, the pump drive motor 6 is stopped in accordance with STEPs 21 and 22 as described above, and the refueling nozzle 15 is raised to the standby position B, preparing for the next refueling operation. Note that if the refueling nozzle 15 is closed before the quantitative valve closing in STEP 23, the process will be similar to normal refueling work.

Thus, the preset amount designation means according to the present invention corresponds to STEPs 6 to 17 executed in the preset processing area of the arithmetic processing circuit 28, while the refueling stop control means according to the present invention corresponds to the refueling amount comparison circuit area of the arithmetic processing circuit 28. This applies to STEP 23 and 24, which are executed in .

In addition, in the preset amount designation means of this embodiment,
In STEP 15, when the variable I is I=10, 20, 30, 40, the value of the variable I itself is directly set as the preset amount.
Preset amounts corresponding to 30 and 40 may be stored in advance in a storage device as a data table, and data corresponding to the value of variable I may be read from the storage device and used as the preset amount. On the other hand, the preset amount is 10,
Of course, it is not limited to 20, 30, 40, and "full tank."

In addition, in the embodiment, the stop valve 9 was illustrated as a specific example of the refueling stop means, and the stop valve 9 was described as being closed by the refueling stop signal output from the arithmetic processing circuit 28. However, the present invention is not limited to this, and the oil supply stop means may be configured to supply a fixed amount of oil by stopping the drive of the pump drive motor 6. In this case, the stop valve 9 can be eliminated.

Further, in this embodiment, the zero reset of the display meter 24 was described as being carried out when the refueling nozzle 15 was lowered to the refueling position C, but the switch box 17 may be provided with a reset switch. Zero reset is performed while the nozzle 15 is in the refueling position C, and the next vehicle can be continuously refueled. Furthermore, although it has been described that the switch box 17 is provided with a down switch 18, an up switch 19, and a preset amount designation switch 20, these switches are eliminated and a single switch is used. Descending, ascending, preset amount designation, etc. may be performed depending on the operating mode such as time.
Furthermore, a large-sized display for displaying the preset amount may be provided separately from the preset amount indicator 25.

Furthermore, in this embodiment, the refueling nozzle 15
Although the suspension-type refueling device has been described in which the hose 14 having a hose 14 is suspended so as to be raised and lowered by the hose elevator 11, and the display meter 24 is installed at a high place 3 where it can be easily seen by the customer, the present invention is not limited to this. An island is installed on site 1, and a housing containing a pump, flow meter, motor, etc. is installed on the island,
It is also possible to use a fixed type oil supply device in which the display meter is provided at the front of the casing where it can be easily seen by the customer.

The oil supply device according to the present invention has been described in detail above, and has the following effects.

A preset amount designation switch is provided in the refueling nozzle or in the middle of the hose near the refueling nozzle, and multiple refueling amounts are stored in advance as preset amounts, and when the refueling nozzle is in a state where refueling is possible, the maximum of the multiple preset amounts is set. A preset amount specifying means is provided for specifying a full tank amount, which is a preset amount, and sequentially scanning and specifying the plurality of preset amounts one by one each time the preset amount specifying switch is operated. Therefore, when the refueling nozzle is ready for refueling, normal refueling or full refueling is possible without operating the preset amount designation switch, while when refueling the desired amount of preset refueling, the preset amount designation switch must be operated. Therefore, when refueling is possible, normal refueling or full tank refueling can be prioritized.

During preset refueling, each time the preset amount designation switch is operated, a plurality of previously stored refueling amounts are scanned one by one in order, so the gas station operator sets the desired refueling amount from among them as the preset amount. Therefore, the preset operation is extremely simple, as it is possible to hold the refueling nozzle with one hand and use the other hand to perform setting operations by pressing the preset amount designation switch one time at a time.

Since a single preset amount designation switch is sufficient, the shape of the switch box can be made smaller, and compared to the conventional technology in which many preset switches and preset dials are arranged near the refueling nozzle, the refueling nozzle It can be installed in narrow places such as in the middle of a hose near a fuel tank, and the switch does not interfere with the refueling operation of the refueling nozzle, making the refueling nozzle easy to operate and preventing collisions of the switch box with vehicles. I can do it.

Each time the preset amount designation switch is pressed, multiple preset amounts are sequentially scanned one by one, and the specified one oil supply amount is notified as the preset amount. It is sufficient to confirm the preset amount by the preset amount informing means after pressing the switch a desired number of times without drawing attention to the setting switch, so that the setting operation can be performed safely and reliably.

Since the preset amount notification means can light up a lamp or make a sound, etc.,
It is possible to appeal to customers that the preset lubrication operation is in progress.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram of a refueling device according to the present invention,
FIG. 2 is a control circuit diagram, and FIG. 3 is a flow diagram explaining the operation. 1... Site, 3... High place, 4... Piping, 5...
Tank, 6... Pump drive motor, 7... Pump, 8... Flow meter, 9... Stop valve, 14... Hose, 15... Refueling nozzle, 17... Switch box, 20... Preset amount specification Switch, 23
... Display case, 24 ... Display meter, 25 ... Preset amount indicator, 27 ... Control circuit, 28 ... Arithmetic processing circuit, 29 ... Display meter drive circuit, 30 ...
Alarm drive circuit.

Claims (1)

[Claims] 1. A pump,
In a refueling device, a flowmeter is provided, a hose having a refueling nozzle at the tip is connected to the other end of the pipe, and a display meter is provided at a position where the customer can easily see the amount of refueling measured by the flowmeter, It consists of a single switch installed in the middle of the refueling nozzle or a hose near the refueling nozzle, and includes a preset amount designation switch that specifies the preset amount each time the switch is operated, and a plurality of refueling amounts including the full tank amount. is stored in advance as a preset amount, and when the refueling nozzle is ready for refueling, the full tank amount is specified among the plurality of preset amounts, and when the preset amount designation switch is operated, the preset amount is A preset amount specifying means for sequentially scanning and specifying the preset amounts one by one; a preset amount indicator for notifying one oil supply amount specified by the preset amount specifying means as a preset amount; and the preset amount specifying means. a storage means for setting and storing a specified preset amount;
a refueling stop control means for outputting a refueling stop signal by comparing the refueling amount measured by the flowmeter with a preset amount set and stored in the storage means during refueling; and refueling from the refueling stop controlling means. A refueling device comprising: refueling stop means for stopping refueling in response to a stop signal. 2. The refueling device according to claim 1, wherein the hose having a refueling nozzle at its tip is suspended from a high place at a gas station so as to be able to rise and fall freely, and the indicator is provided at a position easily visible to customers, such as at a high place at a gas station. 3. The oil supply device according to claim 1, wherein the pump and flow meter are provided in a casing provided on an island, and the display meter is provided at a front position of the casing where it can be easily seen by the customer. 4. The oil supply system according to claim 1, wherein the preset amount indicator is provided near the indicator. 5. The oil supply device according to claim 1, wherein the oil supply stop means is a stop valve provided in the middle of the pipe. 6. The oil supply device according to claim 1, wherein the oil supply stop means is a motor for driving the pump.