JPS60217991A - Liquid feeder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a liquid supply device, and more particularly to a liquid supply device that can automatically perform integer quantity liquid supply and preset M liquid supply.

(Prior art) For example, when refueling a car's gasoline tank at a gas station, conventional devices automatically refuel when the tank is almost full, regardless of whether there is a fraction in the refueling amount. Because the system stops, there are inconveniences such as it becomes troublesome to calculate charges later and a fraction of the yen or less is added to the calculated value. For this reason, normally, when the tank is almost full, the nozzle valve opening degree is lowered and refueling is gradually performed while keeping an eye on the display meter, and additional refueling is performed until a whole number is reached. This kind of refueling operation is the same when refueling a predetermined amount, but it is not only extremely troublesome, but also significantly reduces refueling efficiency, especially when the user refuels himself/herself. With this method, such an operation is almost impossible.

(Purpose) The present invention was made in view of the above problems, and its purpose is to provide a simple structure capable of automatically supplying an integral amount of liquid and a set amount of liquid. The purpose of this invention is to provide a liquid device.

(Means for achieving the objective) That is, in order to achieve the objective, the present invention provides a liquid supply device with an integral quantity liquid supply function and a preset quantity liquid supply function, and also provides a liquid supply system that operates when supplying an integral quantity of liquid. The present invention provides a liquid supply device that shares a means for stopping liquid and a means for stopping liquid supply that operates when a preset amount of liquid is supplied.

(Example) The details of the present invention will be described below based on illustrated examples.

The drawing shows an embodiment of the present invention configured as a device for refueling an automobile tank, and a gasoline supply pipe designated by the reference numeral 1 in the drawing runs from a pump motor 2 to a flow meter 3 to a liquid supply stop means. It is connected to a self-closing nozzle valve 5 via a two-stage closure 1flft 4.

The flow meter 3 is provided with a pulse transmitter 6 operated by its output shaft, and its output signal a is input to a circuit 8 for one decimal place of a counting circuit 7 .

The L notation counting circuit 7 includes a 1st digit circuit 8 for 0.1 decimal places, a 1st digit circuit 9 for 1 decimal places, and 10 decimal places for 10 monsei places.
The carry circuit 10 is configured such that the carry signal of the 1st digit circuit 8 below the decimal point is introduced into the 1st digit circuit 9, and the carry circuit signal of the 1st digit circuit 9 is introduced into the 10th digit circuit IO. Further, the numerical signals of the digit circuits 8, 9, and 10 are simultaneously input to the oil supply amount display meter 11.

On the other hand, a change in the output of the pulse transmitter 6 is detected and the liquid supply stops [L
The signal change detection circuit 12 which outputs the preliminary operation signal C inputs the signal C to the AND circuit 14 together with the carry signal of the one decimal place circuit 8 of the counting circuit 7, and also inputs the signal C to the AND circuit 14. 16. Preset device 18 with 17
is connected to the counting circuit 13, and the 1st stage throttle signal d from the counting coefficient circuit 13 and the signal change detection circuit 12 and the 2nd stage fully closed signal e from the counting circuit 13 and the AND circuit 14 are connected to a common valve. Input to the opening/closing mechanism 19 and the two-stage opening/closing control valve 4
is configured to control.

Next, the operation of supplying oil in integral quantities by the above-mentioned apparatus will be explained.

The two-stage on-off control valve 4 is always open, and when the self-closing nozzle valve 5 is opened, gasoline flows to the pump motor 2 and flow meter 3.
and an automatic closing nozzle valve 5 via a two-stage opening/closing control valve 4.
It is supplied into the tank of the car. With this operation, the flowmeter 3 operates, and the pulse generator 6 outputs a pulse a for each 0.1 sentence as shown in the waveform diagram A in FIG.
is generated, inputted to the circuit 8 for the 1st digit after the decimal point of the counting circuit 7, counted here and sent to the circuit 9 for the 1st digit, and from the circuit 9 for the 1st digit to the circuit 10 for the 10th digit in order to send the product-hi signal. The digit signal enters the display meter 11 and is displayed as the refueling amount, and at the same time, the digit signal output from the decimal point circuit 8 as an integer amount signal of one digit is input to the AND circuit 14 each time.

When gasoline is placed in the car tank in this way, the bubbles close the self-closing nozzle valve 5 when the tank is almost full, and the output signal of the pulse transmitter 6 of the flow meter 3 changes to The state will be as shown in waveform diagram B in FIG.

This state is immediately detected by the signal change detection circuit 12, which outputs the liquid supply stop preliminary operation signal C to the AND circuit 14, and at the same time inputs it to the valve opening/closing mechanism 19 as the first stage throttling signal d, and then outputs the liquid supply stop preliminary operation signal C to the AND circuit 14. Throttle control valve 4.

Therefore, if there is a fraction in the refueling amount when the automatic closing nozzle valve 5 is opened again, the digit signal from the one decimal place circuit 8 is not input to the AND circuit 14.
: fP 14 continues to refuel in the throttled state.

Then, the amount of oil supplied reaches an integer amount, and at that stage, one decimal point
When the digit signal indicating the integer amount of one sentence is input from the digit circuit 8 to the AND circuit 14, the AND circuit 14 combines the liquid supply stop preliminary operation signal C from the signal change detection circuit 12 which has already been input and this signal. An output is generated by the digit signal, and this signal is sent to the valve opening/closing mechanism 19 as a two-stage fully closed signal e, and the two-stage opening/closing control valve 4, which is a liquid supply stop means, is closed to supply an integral amount of gasoline to the automobile tank. The operation is stopped in the state where it is supplied inside.

Note that when the automatic closing nozzle valve 5 is once closed and the oil supply stop preliminary operation signal C is generated from the signal change detection circuit 12, if the oil supply amount shows an integer value, the signal from the one decimal place circuit 8 is Since the digit signal is input to the AND circuit 14, the two-stage on-off control valve 4 is closed and the nozzle valve 5 is turned on again.
Refueling will not occur even if you open it.

Next, a case will be described in which the amount of oil to be supplied is set in advance and then the oil is supplied.

Oil supply amount setting device 18, 10 sentences, 20i.

For example, when the switch 15 of the push button switches 15, 16, and 17 for displaying 30 views is pressed, a preset area of 10 Jlj is stored in the counting circuit 13.

In this state, the two-stage on-off control valve 4 is open, so when the automatic closing nozzle valve 5 is opened, gasoline is supplied from the supply pipe 1 into the tank of the car, and from the pulse transmitter 6 0.
A pulse signal for each sentence is sent to a signal change detection circuit 12 and a coefficient circuit 13.

As a result, the counting circuit 13 subtracts the actual amount of refueling from the set amount, and when the remaining number memory amount reaches 0.5, it sends a first-stage throttling signal d to the valve f opening/closing mechanism 19 to open/close the second stage. control valve 4
Narrow down.

Subsequently, when +l becomes zero, the second stage fully close signal e is sent from the counting circuit 13 to the valve opening/closing mechanism 19, and the valve opening/closing mechanism 19 fully closes the two stage opening/closing control valve 4 based on this signal to finish refueling. .

By the way, the signal change detection circuit 12 detects the state in which the output signal from the pulse transmitter 6 is no longer transmitted, that is, the temporary stop of refueling or the closing of the nozzle valve. Two-stage control ft for refueling
4 is throttled, the liquid supply stop preliminary operation signal C is not output.

In addition, two-stage opening/closing control ft 4 is used as the liquid supply signal means.
Although the integer amount liquid supply and the set amount liquid supply are performed by using the fr4, the above-mentioned liquid supply can also be performed by controlling the motor 2 instead of this fr4. (
Effects) As described above, according to the present invention, the liquid supply device is provided with means for stopping the liquid supply when the integral amount is reached and means for stopping the liquid supply when the preset H is reached. The liquid supply efficiency can be improved by eliminating the complicated liquid supply operation performed while looking at a display meter, etc., and when applied to a self-supply device, it brings about excellent effects.

Moreover, since both of these liquid supply stop operations are performed by one mechanism, this type of liquid supply apparatus can be significantly simplified.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a liquid supply device showing an embodiment of the present invention, and FIG. 2 is a diagram showing output waveforms of a pulse oscillator generated in each state of liquid supply. 1... Supply pipe 2... Pump motor 3...
・Flowmeter 4...Two-stage opening/closing control valve 5...Automatic closing nozzle valve 6...Pulse transmitter 7...Counting circuit 8...
・One digit circuit after the decimal point 12...Signal change detection circuit 13...Counting circuit 18...Preset device 1
9...Valve opening/closing mechanism Applicant Tokyo Tatsuno Co., Ltd. Agent Patent attorney Keiji Nishikawa Figure 1 JP-A-Sho GO-217991 (4)

Claims (1)

[Claims] In a liquid supply device having an integral quantity liquid supply function and a preset quantity liquid supply function, the liquid supply stop means that operates when supplying an integral quantity of liquid and the liquid supply stop means that operates when supplying a preset quantity of liquid are shared. Characteristic liquid supply device.