JPS6221595Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an oil supply device that can repeatedly supply a predetermined amount of oil at predetermined time intervals.

At a gas station, the same amount of oil may be sequentially supplied to a large number of containers with the same volume (for example, kerosene plastic containers or drums). In this case, if the set amount of refueling is large (for example, 200 liters) when refueling many drums one after another, it will take time to refuel each time, so the operator may leave the refueling area while refueling and perform other tasks. During this time, it is dangerous if the set amount of oil has been refilled and the settings are automatically reset and refueling is resumed. However, a certain amount of oil cannot be avoided, which is inconvenient.

The present invention has been proposed to solve the above problems, and includes: a) a refueling nozzle; b) a pump for feeding oil to the refueling nozzle; c) a motor for driving the pump; and d) a control circuit for the motor. and e has a plurality of refueling value setting keys for setting different predetermined refueling values, and when any one of the refueling value setting keys is operated, a preset refueling value corresponding to the preset refueling value is set. a keyboard that generates a signal a and generates a re-preset preparation signal a' together with the preset oil supply value signal a when a setting key with a relatively small predetermined value among the oil supply value setting keys is operated; a flow rate pulse generator that generates a flow rate pulse corresponding to the amount of oil supplied by the refueling nozzle; g a counting circuit that counts the flow rate pulse and generates a count value signal corresponding to the count value; h based on the count value signal. a display device that displays the refueling value; i. a preset circuit that receives the preset refueling value signal a and holds the preset refueling value and generates a signal corresponding to the preset refueling value; j) a signal corresponding to the preset refueling value and the current refueling value. an arithmetic circuit that generates a motor stop signal d' and applies it to the motor control circuit to de-energize the motor when the current oil supply value matches the preset oil supply value; k. When the motor stop signal d' is received from the arithmetic circuit on the condition that the preparation signal a' is input, the refueling nozzle is normally required to take out the oil supply nozzle from the oil filler port of one container and insert it into the oil filler port of another container. After a predetermined period of time has elapsed, a re-preset signal e is generated, and this signal is applied to the preset circuit to cause the arithmetic circuit to reset the preset oil supply value held there, and also to output the motor stop signal.
a re-preset signal generating circuit for reenergizing the motor by eliminating d'; l generating a refueling position signal when the refueling nozzle is moved from a non-refueling position to a refueling position and controlling this signal to the motor; circuit and the counting circuit respectively to energize the motor and reset the counting circuit, and when the refueling nozzle is placed in the non-refueling position, a non-refueling position signal is generated and this signal is sent to the preset circuit. , a nozzle switch that applies a signal to an arithmetic circuit, a re-preset signal generating circuit and a motor control circuit to respectively reset the preset circuit, the arithmetic circuit and the re-preset signal generating circuit and de-energize the motor.

The illustrated embodiment will be described below.

In FIG. 1, 1 is a housing of a ground-mounted oil supply system, 2 is an oil pumping pipe from an underground oil storage tank (not shown), 3 is a fuel pump, 4 is a drive motor for pump 3, 5 is a flow meter, 6 is a transmitter that emits a pulse (flow rate pulse) b corresponding to the amount of oil supply measured by the flowmeter; 7 is a control unit; 8 is an oil supply amount indicator;
9 is a refueling hose, 10 is a refueling nozzle, 11 is a nozzle case which is the non-refueling position of the refueling nozzle, 11'
is a nozzle switch installed inside the nozzle case, and when the nozzle 10 is removed from the nozzle case 11, the signal (nozzle signal) c from the nozzle switch 11' is
rises from a low (L) level to a high (H) level (i.e., a refueling position signal is generated), and when the nozzle is returned to the nozzle case, the nozzle signal c falls (i.e., a non-refueling position signal is generated). 12 is a keyboard for presetting the refueling amount, for example 18, 20, 100,
It has oil supply value setting keys 12 ₁ to 12 ₅ and free keys 12 ₆ for setting oil supply values of 200 and 500,
By pressing each key, the oil supply amount for that key is set. When the free key ₁₂₆ is pressed, no presetting is performed and normal refueling becomes possible. 13 is a speaker.

The operation of the apparatus of the present invention will be explained with reference to FIG. When any of the setting keys 12 ₁ to 12 ₅ on the keyboard 12 is pressed, a preset oil supply value signal a (hereinafter simply referred to as signal a) corresponding to the preset oil supply value is output.

If, for example, the key ₁₂₁ is pressed to preset 18, the preset circuit 14 temporarily holds the preset value (18) and supplies this set value to the subtraction circuit 15.

When the nozzle 10 is removed from the nozzle case 11, the nozzle signal c rises (that is, the refueling stop signal is generated), the motor 4 starts rotating, and the counter circuit 16 and therefore the display 8 return to zero. . When refueling is performed by operating the nozzle, the flow rate pulse b output from the transmitter 6 as refueling progresses is counted by the counting circuit 16, and the counted value is displayed on the display 8 via the display drive circuit 20. , this count value (oil supply amount) is subtracted from the memory content of the subtraction circuit 15 (18 in the above example). The result of this subtraction (remaining amount to be refueled) is a certain amount (e.g. 0.3
), the subtraction circuit 15 outputs the small flow refueling signal d.
(1 pulse) to output the motor control circuit 17
When the subtraction value of the subtraction circuit 15 reaches another constant value (for example, 0.0) and the preset amount of lubrication is completed, the subtraction circuit 15 decelerates the rotation of the motor 4 to supply oil with a small flow rate. A stop signal d' (hereinafter simply referred to as signal d') is output to stop the motor 4 via the control circuit 17. signal
d' is also input to the timer circuit 19, which operates the speaker 13 for a certain period of time (for example, 3 seconds) to notify that one preset amount of refueling has been completed. The signal d' is a continuous signal and is sent to the subtraction circuit 15 as described later.
When the content exceeds 0.0, it disappears.

When the key ₁₂₁ of the keyboard 12 is pressed first, a re-preset preparation signal a' (hereinafter simply referred to as signal a') is applied to the re-preset signal generating circuit 18. The re-preset signal generation circuit 18 operates for a predetermined period of time after the input of the signal d' (when the nozzle is pulled out from the oil filler port of one container and inserted into the oil filler port of another nearby container), on condition that the signal a' is input. After the normally required time (for example, 3 seconds) has elapsed, a re-preset signal e (one pulse) is applied to the preset circuit 14.

In response to the input of the signal e, the preset circuit 14 again provides the held preset value (18 in the above example) to the subtraction circuit 15. The value of subtraction circuit 15 is
When it becomes larger than 0.0, the signal d' disappears and the motor control circuit 17 restarts the motor 4.

After the motor 4 is stopped (signal d' is generated), the nozzle is inserted into, for example, a new empty container within 3 seconds and the motor 4 is restarted to perform the next preset lubrication. The operation at this time is the same as the operation described above. However, the amount of refueling is displayed in addition to the amount of refueling up to the previous time.

When the 20 key ₁₂₂ on the keyboard 12 is pressed, the signal a' is also output, and the same operation as when the 18 key ₂₁₁ is pressed is performed.

However, when keys ₁₂₃ to ₁₂₅ of 100 or more are pressed, signal a' is not output, so signal e is not output even if the initial preset amount of refueling is completed, and therefore automatic resetting of the preset amount is not possible. Not done. In this case, to perform preset lubrication again, return the nozzle to the nozzle case as described below and press the setting key again.

When the nozzle is returned to the nozzle case 11, the nozzle signal c falls (that is, a non-lubrication position signal is generated), which resets the preset circuit 14, the subtraction circuit 15, and the re-preset signal generation circuit 18, and the motor 4 is deactivated.

Although the embodiments have been described above, the present invention can be modified in various ways. For example, the number of set keys on the keyboard and the set value of each key can be arbitrarily selected, and the keys that do not generate the signal a' can also be freely selected. Further, it may be configured such that generation or non-generation of the signal a' can be selected for each key.

A so-called numeric keypad type keyboard may be used. That is, the preset amount may be set by selectively pressing keys from 0 to 9, and in this case as well, the preset amount that does not generate the signal a' can be freely selected.

Further, the refueling amount may be preset instead of or alternatively to the refueling amount. Therefore, in this specification, the refueling value includes both the amount and the amount.

As described above, according to the present invention, it is possible to automatically refuel even after refueling at the preset value is completed, making it possible to easily and quickly perform repeated refueling at the preset amount. By disabling automatic resetting when the value is large, it is possible to eliminate the inconvenience associated with automatic resetting in such a case.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of an oil supply system according to an embodiment of the present invention, and FIG. 2 is a block diagram showing an example of a control section. 2... Oil pumping pipe, 3... Pump, 5... Flow meter, 6... Flow rate pulse transmitter, 7... Control unit, 8
...Indicator, 11'...Nozzle switch, 12...
...keyboard, 13...speaker.

Claims (1)

[Scope of Claim for Utility Model Registration] a. A refueling nozzle, b. A pump for sending oil to the refueling nozzle, c. A driving motor for the pump, d. A control circuit for the motor, and e. Different predetermined refueling values. It has a plurality of oil supply value setting keys for setting the oil supply value, and when any one of the oil supply value setting keys is operated, a preset oil supply value signal a corresponding to the preset oil supply value is generated, and the oil supply value setting key a keyboard that generates a re-preset preparation signal a' together with the preset oil supply value signal a when a setting key with a relatively small predetermined value is operated; and f a flow rate pulse corresponding to the amount of oil supplied by the oil supply nozzle. g) a counting circuit that counts the flow rate pulses and generates a count value signal corresponding to the count value; h) a display that displays the refueling value based on the count value signal; i) the above. a preset circuit that receives a preset oiling value signal a, holds the preset oiling value, and generates a signal corresponding to the preset oiling value; an arithmetic circuit that generates a motor stop signal d' when the value matches the value and applies this signal to the motor control circuit to de-energize the motor; When a motor stop signal d' is received from the arithmetic circuit, the refueling nozzle is removed from the oil filler port of one container and restarted after a predetermined time normally required for inserting it into the filler port of another container. Generating a preset signal e and applying this signal to the preset circuit to cause the arithmetic circuit to reset the preset lubrication value held there, and also to eliminate the motor stop signal d' and reenergize the motor. a re-preset signal generation circuit that causes the refueling nozzle to be moved from a non-refueling position to a refueling position, and generating a refueling position signal and applying this signal to the motor control circuit and the counting circuit to respectively control the motor; It energizes and resets the counting circuit, and when the refueling nozzle is placed in the non-refueling position, it generates a non-refueling position signal and sends this signal to the preset circuit, arithmetic circuit, re-preset signal generation circuit and motor control. 1. A refueling device comprising: a nozzle switch that is applied to a circuit to reset the preset circuit, the arithmetic circuit, and the re-preset signal generation circuit, respectively, and deenergize the motor.