JPH0420800Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Field of industrial application The present application relates to a device for refueling fuel oil, and particularly to a refueling device effective for dispensing oil into a large number of small cans for kerosene.

(b) Prior art During the winter, large quantities of kerosene cans and drums are brought to gas stations, and workers are busy refueling.

Especially in the case of kerosene cans, there are transactions based on the number of cans.
There are many cases where the number of cans is not known when a large customer brings in cans, and in such cases, each can is counted one by one, but the work area is cluttered with other customers bringing in cans, and I often make mistakes in counting.

Also, sometimes oil-filled cans and empty cans are mixed together, which is especially confusing.

Therefore, various proposals have been made to improve work efficiency.

JP-A No. 57-163697 describes a repeat preset system, but the problem is that it is necessary to specify the number of repeats in advance, which means that it is necessary to first confirm the number of cans to be refueled (number of empty cans). There is a point.

Furthermore, JP-A No. 49-109925 states that the number of times preset lubrication is repeated is stored.
For example, it is used to confirm the number of times of repetition in one day, and automatic reset is not performed when starting supply to the next customer, so it is not possible to confirm the number of cans for each customer.

In addition, for the purpose of saving the display unit, JP-A-52-74111
Although there is a description of using one display by switching, the circuit configuration allows the display contents to be switched at any time, so it is possible to switch between the refueling amount, preset amount, and number of times (number of cans) during refueling. No measures have been taken to prevent the risk of misunderstanding or confusion caused by switching to

(C) Purpose The present application does not require counting the number of cans in advance even when transactions are made in cans, and can automatically count the number of cans for each customer, and can also switch the display from the amount of refueling to the number of cans. To prevent miscounting of cans and occurrence of trouble by providing a refueling device that prevents cans from being carried out during refueling.

(d) Structure and operation Therefore, the present application makes it possible to display the number of cans refueled this time instead of the amount of refueling by operating a switch after the refueling operation is completed. A refueling pulse transmitter that sequentially connects the pump to be rotated, the flow meter, and the nozzle and outputs a number of pulse signals corresponding to the amount measured by the flow meter, and the presence or absence of the nozzle in the non-refueling position. A nozzle detection switch that outputs a nozzle signal corresponding to a display for inputting a preset value; and a means for inputting a preset value.
A preset value setting circuit in which this input value is set, a preset value storage circuit in which the preset value is stored, a start switch installed near the nozzle and outputting a start signal, and a start switch installed in the vicinity of the nozzle to output a start signal; A signal generation circuit that outputs a restart signal when a start signal is input under the conditions that the motor is not present and the motor is de-energized, and a signal generation circuit that counts the number of pulse signals and inputs a restart signal or moves the nozzle from the non-lubrication position. Counting circuit B that returns to zero and counting circuit B
A comparator circuit that compares the counted value and a preset value and outputs a match signal when the two match, a motor control circuit that de-energizes the motor when a match signal is input and starts the motor when a restart signal is input, and a match signal. A counting circuit C that counts the number of occurrences of , and returns to zero when the nozzle moves from the non-lubricating position, a teaching switching switch that outputs a switching signal, and a switching signal that is conditioned on the presence of the nozzle in the non-lubricating position. It consists of a display switching circuit that displays the preset value and the value of the counting circuit C on the display instead of the counted value of the counting circuit A, and the number of times the refueling of the preset value is completed is changed. In addition to being counted as the number of cans or the number of refueling times, this counted value can be switched and displayed on the condition that the nozzle is returned to the non-refueling position, and furthermore, this counted value can be reset to zero by moving the nozzle from the non-refueling position. Ru.

(E) Embodiment In Figures 1 and 2, 1 is the main body of the oil supply system, in which a pump and a flow meter (not shown) are housed.
Oil measured by a flow meter is supplied through a hose 2 and a nozzle 3.

Reference numeral 4 indicates an oil supply amount display, and reference numeral 5 indicates a preset value setting keyboard, each of which has keys PB ₁ to PB ₆ for specifying and writing the setting values, and lamps L ₁ to _{L 6} provided corresponding to each key. is in place. 6 is a display changeover switch, 7 is a remote start switch installed near the nozzle 3, 8
is a nozzle case in which the nozzle 3 is housed when not being refueled.

Next, referring to FIG. 3, reference numeral 9 denotes a nozzle detection switch, which is disposed in relation to the nozzle case 8, and its output signal n, which is the nozzle signal n, is L (low level) when the nozzle 3 is stored and held in the nozzle case 8. ) state and is in the H (high level) state when it is removed from the case 8.

10, the flowmeter (not shown) measures the unit flow rate (1/100
) is a refueling pulse transmitter that outputs one refueling pulse signal p each time it is measured and supplies it to the counting circuit A11 and the counting circuit B12.
is removed from case 8 (i.e. signal n
The pulse signal p that is input during the period from when the signal n changes from L to H until it is returned (that is, until the signal n changes from H to L) is counted, and the counted value is output as the refueling amount signal a. .

13 is a preset value setting circuit, and the keyboard 5
When any of the keys PB ₁ to _{PB 6} is operated to set a preset value, it takes in the numerical signal b, stores the preset value (designated value), and outputs the preset value as the preset value signal c. It is applied to the preset value storage circuit 14 and comparison circuit 15. This signal c continues to be output until the nozzle signal n output from the nozzle detection switch 9 changes from H to L.

At this time (when signal c is output), the lamp signal d is also output from the setting circuit 13, and the lamp drive circuit 16 checks the preset value of the lamp _L1.
~L Make one of ₆ blink.

17 is a signal generating circuit that outputs a restart signal e (one pulse) when the conditions described below are met; 18 is a counting circuit C that counts the number of times of repeated refueling and outputs a frequency signal f; 19 is a switch output from the display changeover switch 6. Preset value storage circuit 1 depending on the presence or absence of signal g.
4, a preset value signal c' outputted from the counter circuit C18, and a number signal f outputted from the counting circuit C18,
A display switching circuit 21 outputs an energizing signal i to control the energization of a motor M for driving a pump (not shown). At the same time, when the motor M is de-energized, a de-energized signal j is output and the signal generation circuit 1
This is the motor control circuit that feeds the motor.

In the above configuration, the operation during refueling will be described below.

When refueling, first operate key PB ₁ on the keyboard 5 to preset 18. Then, a numerical signal b indicating 18 is output and applied to the preset value setting circuit 13. As a result, the setting circuit 13 outputs the preset value signal c and applies it to the comparator circuit 15 as well as to the preset value storage circuit 14. However, at this time, the memory circuit 14 does not take in this signal c. Further, at this time, a lamp signal d is also output from the setting circuit 13 and given to the lamp drive circuit 16, and the drive circuit 16 blinks the lamp _L1 provided corresponding to the designated key _PB1 , and displays the key PB1. ₁ has been operated.

Next, when the nozzle 3 is removed from the case 8, the nozzle signal n, which is the output signal of the nozzle detection switch 9, is
changes from L to H, and at this time, the counting circuit A11
is returned to zero and a zero display is made on the display 4, and at the same time, the counting circuit B12 and the counting circuit C18 are returned to zero,
Further, in the preset value storage circuit 14, the current preset value, ie, 18, is stored in place of the previously stored preset value for the previous time.

When the nozzle 3 is set in the filler port of a kerosene can and the remote start switch 7 is operated, a start signal h is outputted from the switch 7 and applied to the signal generation circuit 17.

The signal generation circuit 17 restarts on the condition that the de-energizing signal j exists, that is, the motor M is in the de-energized state, the nozzle signal n is in the H state, and the start signal h is input. signal e
(one pulse) is output.

The counting circuit B12 returns the count value to zero by inputting this signal e (this time, it was previously returned to zero when the nozzle signal n changed from L to H, so it will return to zero again).Motor control The circuit 21 receives the restart signal e
outputs the energizing signal i according to the input of the motor M
Rotate and energize to drive the pump. Now you can refuel at any time, so pull the lever 3' of the nozzle 3 and use the nozzle's built-in valve (not shown).
When opened, refueling takes place.

The pulse signal p output from the refueling pulse transmitter 10 as refueling progresses is counted by the counting circuit A11 and the counting circuit B12, and the count value of the counting circuit A11 is passed through the display switching circuit 19 as the refueling amount signal a. The amount is fed to the display drive circuit 20 and displayed numerically on the display 4 as the amount of oil to be supplied.

On the other hand, the count value in the counting circuit B12 is the refueling amount signal k.
The signal is applied to the comparator circuit 15 as a signal.

The comparison circuit 15 constantly compares the counted value of the counting circuit B12 and the preset value set and stored in the preset value setting circuit 13, and when the two match, a match signal 1 is output. Upon input of this signal l, the counting circuit C18 counts 1, assuming that one preset amount of refueling has been completed, and the motor control circuit 2
1, the output of the energizing signal i is stopped by the signal l, the motor M is deenergized, and the oil supply is stopped.

After this, the worker resets the nozzle 3 to the next kerosene can and operates the start switch 7 again, thereby starting the signal generation circuit 1 in the same way as the previous operation.
7 to output a restart signal e to return the counting circuit B12 to zero, and at the same time cause the motor control circuit 21 to reenergize the motor M. Then, when the preset amount (18) is refilled and the count value matches the preset value in the counting circuit B12, the comparator circuit 1
5 outputs the coincidence signal l again, and at this time, the counting circuit C18 adds 1 to the previously counted count value 1 to make the count value 2, while the motor control circuit 21 de-energizes the motor M.

If the above operation is repeated and all the kerosene cans have been refueled when the total amount of refueling reaches 360, then 360.00 will be displayed on the display as shown in FIG. 4.

Next, when the nozzle 3 is returned to the case 8, the signal n changes from H to L, which resets the preset value setting circuit 13 and clears the previously memorized preset value.At the same time, the preset signal C and ramp signal d are reset. Disappear.

Therefore, when it is desired to know the number of refueled cans, the display changeover switch 6 is operated to generate a changeover signal g, which is applied to the display changeover circuit 19. Then the display switching circuit 19
On condition that the signal n is in the L state, the preset value signal c' and the number signal f are used instead of the oil supply amount signal a.
is output to the display drive circuit 20, and the number of repetitions shown in FIG. 5 is 20 and the preset setting amount is 18.
and is displayed. These displays return to their original state when the switching signal g disappears, that is, when the switching operation of the display switching switch 6 is stopped.

In this embodiment, the display changeover switch 6 and the remote start switch 7 are provided separately, but the changeover signal g output from the former is different from the nozzle signal n when the nozzle signal n is L.
It only takes effect when the nozzle 3 is returned to the case 8, and in the latter case the nozzle signal n is H.
Since it is designed to work only when the nozzle 3 is removed from the nozzle case 8, one of the switches 6 and 7 can be abolished and used as a common switch, or both switches 6 and 7 can be used as a common switch. It is also possible to make it possible for either switch 6 or 7 to perform the above action. In addition, remote start switch 7 is its contact part (signal generation part)
It is also possible to adopt a type in which the refueling machine body 1 is installed with only the part that accepts manual operation provided near the nozzle 3.

(f) Effects Since the configuration is as detailed above, the number of times refueling has been completed can be switched and displayed on the display by repeating preset refueling, and even if there are a large number of kerosene cans, the trouble of counting the number of cans can be avoided. Furthermore, since the switching display is not possible during refueling, a useful refueling system can be obtained in which there is no fear of confusion due to a display different from the refueling amount during refueling.

[Brief explanation of the drawing]

Fig. 1 shows the external shape of the oil supply device, Fig. 2 shows the electric circuit according to the present application in block form, and Fig. 3 shows the outline of the oil supply device.
The figure shows the key arrangement of the keyboard,
FIG. 4 shows the state of the indicator in which the amount of refueling is displayed, and FIG. 5 shows the state in which the display has been switched from the state shown in FIG. 4. 1...Body, 2...Hose, 3...Nozzle, 8
...Nozzle case.

Claims (1)

[Scope of utility model registration request] A pump rotated by a motor, a flow meter, and a nozzle are sequentially connected, and a refueling pulse transmitter outputs a number of pulse signals corresponding to the amount measured by the flow meter, and a refueling pulse transmitter that outputs a number of pulse signals corresponding to the amount measured by the flow meter, and a nozzle detection switch that outputs a nozzle signal corresponding to the presence or absence of a nozzle; a counting circuit A that counts pulse signals and returns the counted value to zero when the nozzle moves from the non-lubrication position; and a counted value of the counting circuit A. means for inputting a preset value, a preset value setting circuit for setting the input value, a preset value storage circuit for storing the preset value, and a start signal installed near the nozzle. a start switch that outputs a start switch, a signal generation circuit that outputs a restart signal when a start signal is input under the conditions that the nozzle is not in the non-lubrication position and the motor is de-energized, and the number of pulse signals is counted. counting circuit B, which returns to zero upon input of a restart signal or movement of the nozzle from the non-lubricating position, and counting circuit B.
A comparator circuit that compares the counted value and a preset value and outputs a match signal when the two match, a motor control circuit that de-energizes the motor when a match signal is input and starts the motor when a restart signal is input, and a match signal. A counting circuit C that counts the generation circuit and returns to zero when the nozzle moves from the non-lubricating position, a display changeover switch that outputs a switching signal, and a switching signal that is generated when the nozzle is in the non-lubricating position. and a display switching circuit that causes the display to display a preset value and the value of the counting circuit C instead of the counted value of the counting circuit A upon occurrence of the above.