JPH0226875Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present application relates to a refueling device that supplies oil such as gasoline or diesel oil to automobiles at a refueling station.

(b) Prior art A refueling system used at a refueling station consists of a pump, a flow meter, a refueling hose, a nozzle, and a display (the display usually has two display surfaces), making it a single system. However, since it is necessary to refuel everything from large trucks to small passenger cars when using light oil, a large nozzle capable of high-speed refueling, as seen in Japanese Patent Application Laid-Open No. 55-38214, is used.
In some cases, small nozzles that can be easily refueled at relatively low speeds are incorporated into one system, so that refueling can be performed using either nozzle. The display of this type of refueling device is arranged so that the display is on the front and rear sides of the refueling device, and each nozzle is installed on the left and right sides of the refueling device, and whether the nozzle is large or small is displayed on one display surface. is also available for use.

(c) Problems that the invention aims to solve However, since the amount of refueling can be checked on the front and rear display surfaces regardless of which nozzle is used, for convenience of use, both display surfaces must return to zero at the same time. It will be done. In this case, if another worker removes the nozzle immediately after finishing refueling with one nozzle in order to start refueling with the other nozzle, the previous refueling amount display will immediately return to zero, making it impossible to reconfirm and causing inconvenience. It was hot.

(d) Structure and operation to solve the problem Therefore, in the present application, in order to solve the above problem, even if one nozzle is returned and the other nozzle is removed immediately, the display of the previous oil supply amount disappears. It consists of a pump that pumps out oil and sends it to the flow meter, a motor that drives this pump, and a secondary pipe line of the flow meter that is branched to form multiple branch pipes. An oil flow path in which a hose and a nozzle are connected to the tips of the branch pipes, a pulse signal generating means for outputting a number of pulse signals corresponding to the amount of oil measured by the flowmeter, and a count value for counting the pulse signals. a counting means for supplying the amount of oil to the display as a refueling amount signal and returning the counted value to zero by inputting a return signal;
a nozzle storage section provided for each nozzle and held when each nozzle is not refueled; a nozzle detection switch provided in association with the nozzle storage section and generating a nozzle signal specific to each storage section when the nozzle is absent in the storage section; When the nozzle signal disappears, a predetermined period of time begins to be counted, and if the same nozzle signal as the last nozzle signal that disappeared is generated, a zero signal is generated unconditionally, and if the nozzle signal is different, the above-mentioned zero signal is generated. a zero return control means that generates a return signal and applies it to the counting means on the condition that the return signal occurs after a certain period of time has elapsed; If it is removed, the previous refueling value will not return to zero, making refueling impossible.

(e) Embodiment 2 is a housing for an oil supply device, inside of which there is a pump 6 driven by a motor 4, a flowmeter 10 that measures oil pumped through a pipe 8, and a flowmeter 10 that measures unit oil. A flow rate pulse oscillator 12 that outputs one pulse signal p every time a quantity (1/200 liter) is measured, a display D that displays the amount of refueling and has display surfaces on the front and back sides, and a nozzle N when not refueling. ₁ , _N2
Cases (storage parts) C ₁ , C ₂ that store the nozzles N 1 , N ₂ are arranged in association with the cases C ₁ , C 2 , and output nozzle signals n ₁ , n ₂ corresponding to the presence or absence of the nozzles N ₁ , N ₂ . Nozzle detection switches S ₁ , S ₂ and a control section Z are provided.

H ₁ and H ₂ are hoses, one end of which is connected to nozzles N ₁ and N ₂ , and the other end connected to the case respectively.
It is connected to a branch pipe 14 branched from the secondary side pipe line of the flowmeter 10 on the same side as the mounting surface of C ₁ and C ₂ .

In FIG. 2, 20 is a counting circuit, and the oscillator 12
The display drive circuit 22 counts the number of pulse signals p output from the display drive circuit 22 and uses the counted value as the oil supply amount signal l.
and display the amount of oil supplied on display D.

24 is a motor drive circuit, each with a switch
Nozzle signals n ₁ and n that are output while S 1 and S ₂ cannot detect nozzles _{N 1 and} N ₂ , that is, while nozzles N ₁ and N ₂ are removed from cases C ₁ and C ₂ , respectively. ₂
Only when one of the two is input, the motor 4 is energized and the pump 6 is driven. Note that this motor drive circuit 24 does not energize the motor 4 when both nozzle signals n ₁ and n ₂ are inputted, and when both are not inputted.

Reference numeral 26 denotes a signal generation circuit (zero return control means) which detects when both nozzle signals n ₁ and n ₂ cease to exist, that is, when both nozzles N ₁ and N ₂ are returned to cases C ₁ and C ₂ . Then, the number of clock signals c outputted from the clock signal generation circuit 28 is counted and timed, and a return signal r, a flushing signal u, and an energization inhibiting signal t are selected and outputted according to conditions to be described later. Reference numeral 30 denotes a setting circuit for setting a certain period of time (for example, 5 seconds), and its setting value is output as a setting signal m.

In the above configuration, nozzles N ₁ and N ₂ are connected to the case.
When one nozzle N ₁ is removed from the state housed in C ₁ and C ₂ , a nozzle signal n ₁ is output from switch S ₁ . The motor 4 is energized by this signal _n1 to drive the pump 6, and the signal generation circuit 26 outputs a return to zero signal r to return the count value (previous oil supply value) of the counting circuit 20 to zero. After this, oil can be supplied by opening a built-in valve (not shown) in the nozzle, and the amount of oil supplied is displayed on the display D.

After the desired amount of oil has been filled, move the nozzle N ₁ to case C ₁
When the nozzle signal _n1 is returned to , the nozzle signal n1 disappears, the motor 4 is deenergized, and the drive of the pump 6 is stopped. At this time, the signal generating circuit 26 starts timekeeping by counting the clock signal c at the same time as the nozzle signal _n1 disappears.

If you subsequently refuel using the nozzle _N1 side again, it is assumed that the previous refueling operator and the current refueling operator are the same person, and the amount of refueling from the previous time has been confirmed, and the amount of refueling from the previous time has been confirmed. No problem will occur even if the amount of oil supplied is eliminated, so when nozzle N ₁ is removed from case C ₁ , the motor 4 is immediately energized and the counting circuit 20 is also returned to zero due to the generation of the return to zero signal r, making it ready for refueling. However, if you use nozzle _N2 to refuel this time instead of nozzle _N1 that was used last time, the previous refueling operator and the current refueling operator are not the same person, and the amount of refueling was not confirmed last time. Since there is a possibility that nozzle N ₁ is returned to case C ₁ and the nozzle signal n ₁ disappears, nozzle N ₂ is returned to case C _2.
The time it takes for the nozzle signal _n2 to be generated after the nozzle is disconnected from the
2 seconds), that is, the count value of the clock signal c in the signal generation circuit 26 is 5 seconds.
If it is within seconds, only in this case, the return to zero signal r is not output, and the counting circuit 20 is not returned to zero, but instead the energization prevention signal t and the flushing signal u are output.

The motor 4 is prevented from being energized by the energization prevention signal t, and the display drive circuit 22 flashes the displayed value on the display D by the flushing signal u to prompt confirmation of the previous refueling. 4 is in a de-energized state and informs that refueling is not possible.

Once the energization prevention signal t and the flushing signal u are output, the time value of the clock signal c becomes the setting signal m.
continues to be output even if the value exceeds (5 seconds),
This state continues until the nozzle N ₂ is once returned to the case C ₂ and the nozzle signal n ₂ disappears.

When the nozzle _N2 is returned to the case _C2 , the nozzle signal _n2 disappears, so the energization prevention signal t and the flushing signal u disappear, and the display returns to its normal continuous lighting state.

After checking the amount of oil supplied last time, nozzle N ₂
When removed from case C ₂ , the signal generation circuit 26
Since the time value of the clock signal c in , it has been more than 5 seconds since the nozzle signal _n1 disappeared first, the energization prevention signal t and the flushing signal u are not output, and only the return signal r is output, and the counting circuit 20 is returned to zero and the motor 4 is also energized.

Note that the above series of operations is performed in exactly the same way when nozzle _N1 is used after nozzle _N2 has been used. Furthermore, this device can be effectively used not only for diesel oil but also for gasoline and kerosene.

(F) Effect Since the configuration is as detailed above, if the amount of oil supplied by multiple nozzles connected to one flowmeter is displayed on one display, it is difficult to supply oil using one nozzle. This solves the problem where another refueling worker uses the other nozzle immediately after the previous refueling amount display disappears before being confirmed, and can continue refueling with the same nozzle. In some cases, the refueling worker is the same person and the previous refueling amount display has been confirmed, so the next refueling work can be carried out immediately, eliminating trouble with customers and ensuring speedy refueling work. This will have a negative effect.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a schematic configuration of the oil supply system, and FIG. 2 is a block diagram showing an electric circuit within the control section. N ₁ , N ₂ ... Nozzle, C ₁ , C ₂ ... Case, 6...
...Pump, 10...Flowmeter.

Claims (1)

[Scope of utility model registration request] There is a pump that pumps out oil and sends it to the flowmeter, a motor that drives this pump, and a secondary pipe line of the flowmeter that branches off to form multiple branch pipes, each with a hose and nozzle at the tip. A connected oil flow path, a pulse signal generating means for outputting a number of pulse signals corresponding to the amount of oil measured by the flowmeter, counting the pulse signals and giving the counted value to the display as an oil supply amount signal, and A counting means that resets the count value to zero upon input of a zero return signal, a nozzle storage section provided for each nozzle to hold each nozzle when it is not refueled, and a nozzle storage section provided in association with the nozzle storage section to prevent malfunctions in the nozzle storage section. There is a nozzle detection switch that generates a nozzle signal specific to each storage section when the nozzle signal is present, and a nozzle detection switch that starts counting a predetermined period of time when the nozzle signal disappears, and when the nozzle signal that is the same as the last nozzle signal that disappeared is generated, there is no nozzle detection switch. A refueling device comprising: a return-to-zero control means for generating a return-to-zero signal under a condition, and in the case of a different nozzle signal, generating a return-to-zero signal under the condition that the return-to-zero signal is generated after the elapse of the predetermined time period, and applying the return signal to the counting means.