JPH0441117Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a refueling device for refueling a fuel tank of a vehicle with gasoline or the like.

[Conventional technology]

In general, a fixed type refueling device outputs a refueling operation start signal when the refueling nozzle is removed from the nozzle hook, which is the storage position, and outputs a refueling operation end signal when the refueling nozzle is stored in the nozzle hook. It is designed to start and stop the motor.

On the other hand, in the case of a suspended refueling system, a refueling operation start signal is output while the refueling nozzle is removed from the storage standby position to the refueling position, and a hand lift switch is activated to raise the refueling nozzle from the refueling position. When the lift is operated, a refueling end signal is output, which starts and stops the pump drive motor.

[Problem that the invention attempts to solve]

However, for example, in the case of the above-mentioned suspension type refueling system, the pump drive motor is always driven and the pump is in operation from the time the refueling operation start signal is output until the refueling operation end signal is output. As a result, if a vehicle entering for refueling gets caught in the refueling nozzle or hose that has descended to the refueling position, the automatic valve closing mechanism of the refueling nozzle will operate and refueling will be interrupted or terminated. If you accidentally start the car with the refueling nozzle hooked to the fuel filler port of the fuel tank, the hose may be damaged or the refueling nozzle joint may come off, causing a large amount of oil to be scattered around, resulting in a fire, etc. There is a risk of causing danger.

Therefore, when the pump drive motor is started at the start of refueling work, if the refueling nozzle is not operated for a predetermined period of time, the pump drive motor is stopped for safety and refueling is forced. It is also conceivable to leave it in the finished state.

However, if the pump drive motor is simply configured to stop, for example, after the automatic valve closing mechanism of the refueling nozzle is activated, when additional refueling is attempted to reach the actual full tank position, it is difficult to move the refueling nozzle from the refueling position. It is necessary to return the pump to the standby position, lower it again to the refueling position, and restart the pump drive motor, which poses a problem in that the work is time-consuming. On the other hand, when the pump drive motor is restarted for additional lubrication, the lubrication amount display is reset to zero, so separate slips are issued for previous lubrication and additional lubrication, which makes the difference in appearance. There is a problem in that accounting procedures become complicated because independent refueling is performed twice. Note that this problem also applies to fixed oil supply devices.

The present invention was developed in view of the problems of the conventional technology, and even if the pump drive motor is stopped after the refueling nozzle is removed from the storage position, refueling can be restarted by simply operating a switch. It is an object of the present invention to provide a refueling device according to the present invention.

[Means for solving problems]

In order to solve the above problems, the present invention
As shown in the functional block diagram in the figure, there is a pipe 101 that communicates with a tank on one side and a hose 103 that has a refueling nozzle 102 at its tip on the other side, and a pump drive motor 104 installed in the middle of the pipe 101. A pump 105 driven by a pump 105, a flow meter 106 that measures the flow rate, and a flow pulse output from a flow pulse transmitter 107 attached to the flow meter 106 are calculated to display the amount of oil supplied on the amount display 108. Refueling amount calculation means 109; Refueling work start detection means 110 that detects when the refueling nozzle 102 is removed from the storage position and outputs a refueling work start signal; Refueling work start signal output from the refueling work starting means 110. A first oil supply control means 11 that starts the pump drive motor 104 and resets the oil supply amount display 108 to zero upon input of a signal.
1, after the pump driving motor 104 is started by the first oil supply control means 111, when the oil supply nozzle 102 does not perform oil supply for a predetermined period of time, the oil supply operation is interrupted or Refueling interruption/completion detection means 112 for detecting termination
and a second oil supply control means 113 that stops the pump drive motor 104 by inputting the detection signal output from the oil supply interruption/end detection means 112.
and a refueling continuation switch 114 provided midway through the refueling nozzle 102 or hose 103; and when the pump drive motor 104 is stopped by the second refueling control means 113, the refueling continuation switch 114 and a third oil supply control means 115 for restarting the pump drive motor 104 in response to input of an operation signal.

[Effect]

With this configuration, the flow rate pulse generator 10 is detected by the refueling interruption/completion detection means 112.
When the interruption or end of the refueling operation is detected based on the time when the flow rate pulse from 7 does not arrive, the pump drive motor 104 is controlled by the second refueling control means 113.
stop. After that, when you continue refueling,
When the refueling continuation switch 114 is operated, the pump drive motor 1 is controlled by the third refueling control means 115.
04 can be restarted.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 2 to 6.

FIG. 2 is an overall configuration diagram of the suspended refueling system applied to this embodiment. A building 2 equipped with an office is provided in the filling station site 1, and above the building 2 there is a ceiling,
A high place 3 consisting of a beam, a canopy, etc. is formed. A pipe 4 is provided along the building 2, and one end of the pipe 4 is connected to a tank 5 installed underground in the site 1.
The other end is connected to a hose elevator, which will be described later. A pump 7 driven by a pump drive motor 6 and a flow meter 8 for measuring the amount of oil supplied are installed in the middle of the piping 4, and the flow meter 8 transmits a flow signal proportional to the measured flow rate. A flow rate pulse transmitter 9 is attached.

Further, a hose elevator 10 is installed at the high place 3, and the hose elevator 10 is composed of a rotatably provided hose reel 11 and a hose elevator motor 12 that rotates the hose reel 11 in the forward and reverse directions. The other end of the pipe 4 is connected to the hose reel 11, and the base end of a hose 13 is wound around the hose reel 11, and a refueling nozzle 14 is attached to the tip of the hose 13. On the other hand, hose elevator 1
A nozzle position detection switch 15 is provided in the switch 15, and the refueling nozzle 14 is moved to the uppermost storage position A, approximately 1.8 m from the ground as shown in the figure, according to the rotation of the motor 12 or hose reel 11.
Switches 15A, 15B, 1 detect that the standby position B of the vehicle has become the refueling position C where the vehicle should be refueled.
Built-in 5C.

A hand switch box 16 is provided at the refueling nozzle 14 or at a position near the refueling nozzle 14 in the middle of the hose 13.
6, the refueling nozzle 14 is lowered from the standby position B to the refueling position C, and conversely from the refueling position C to the standby position B.
A hand-held lift switch 17 is provided, and a refueling continuation switch 18 is operated to continue refueling for additional refueling after refueling has been interrupted or completed. It is connected to the control panel described later.

Reference numeral 20 denotes a refueling amount indicator for displaying the amount of refueling, and the indicator 20 is installed at a position easily visible to customers, such as at a high place 3 in the building 2, for example.

Reference numeral 21 denotes a control panel installed in the office room of the building 2, and the control panel 21 has a built-in control circuit shown in FIG. 3, and is equipped with a main lift switch 22. 22 is designed to raise and lower the refueling nozzle 14 between the storage position A and the standby position B.

Furthermore, 23 is a control circuit provided in the control panel 21, and the control circuit 23 is configured as a microcomputer including, for example, a processing circuit (CPU) and a memory circuit (RAM and ROM), and the RAM includes a refueling amount counter. K, timer T is provided,
The programs shown in FIGS. 4 to 6 are stored in the ROM. The input side of the control circuit 23 is connected to the flow rate pulse transmitter 9, the nozzle position detection switch 15, the hand lift switch 17, the refueling continuation switch 18, and the main lift switch 22, and the output side is connected to the refueling amount indicator 20 and the hose. It is connected to the lifting motor drive circuit 24 and also to the pump drive motor drive circuit 25 . In addition,
The hose lifting motor drive circuit 24 is a control circuit 23
The hose elevating motor 12 is controlled to rotate in forward and reverse directions based on the hose elevating signal from the control circuit 2.
The pump drive motor 6 is controlled to be driven and stopped by the pump drive and stop signals from the pump drive motor 3.

Here, the control circuit 23 outputs a hose elevating signal based on the operation signal of the main elevating switch 22 and the detection signal of the nozzle position detecting switch 15, rotates the hose elevating motor 12, and operates the refueling nozzle 14. The first function is to raise and lower the hose between the storage position A and the standby position B, and the hose lift signal is output based on the operation signal of the hand lift switch 17 and the detection signal of the nozzle position detection switch 15. The second function rotates the motor 12 to move the refueling nozzle 14 up and down between the atmospheric position B and the refueling position C, and the nozzle position detection switch 15 moves the refueling nozzle 14 from the standby position B to the refueling position C.
When it is detected that the fuel supply nozzle 14 has left the fuel supply position C toward the standby position B, the pump drive signal is output. 3, and a fourth function that outputs a pump drive signal again in response to the input of the operation signal when the refueling continuation switch 18 is operated after the pump drive motor 6 is stopped by the process described later. have. Note that the first to third functions are conventionally known.

The present embodiment is configured as described above, and its operation will be described next.

First, FIG. 5 shows the flow rate pulse interrupt process. This process is performed as an interrupt process for the main routine shown in FIG. The count value of K is incremented in sequence (step 21), a count signal is output to the oil supply amount display 20 to display the oil supply amount (step 22), and each time a flow rate pulse signal is read, a reset request signal is sent to the timer T. Output (step 23).

On the other hand, FIG. 6 shows timer interrupt processing, and this processing is also performed as an interrupt processing for the main routine shown in FIG. 4 (step 7 in FIG. 4).
(see below), it constantly monitors whether or not the timer reset request signal has been output in step 23 described above (step 31), and if ``YES'', the timer T is reset to zero, and if ``NO'', the timer T is reset to zero with a clock pulse. Step T in sequence (step 32), for example 3
Determine whether the minute has elapsed (step 33),
If "YES", a pump drive motor stop request signal is output.

Now, referring to the program shown in Figure 4,
The refueling work process will be described. Note that in FIG. 4, the processing by the main lift switch 22 is omitted, and only the processing when the refueling nozzle 14 is between the standby position B and the refueling position C is shown.

Now, step 1 indicates a step for monitoring whether or not the hand lift switch 17 has been lowered. When the hand lift switch 17 is operated, a hose lowering signal is output to the motor drive circuit 24 for motor lift, and the motor lift switch 17 is operated to lower the hose. Rotate the hose 12 downward (step 2). As a result, the hose 13 wound around the hose reel 11 is unwound and the refueling nozzle 14 is lowered. At this time, when the nozzle position detection switch 15 detects that the refueling nozzle 14 has left the standby position B, a pump drive signal is output to the pump drive motor drive circuit 25, and the motor 6 Start pump 7 (step 3). Then, the nozzle position detection switch 1
5, when it is detected that the refueling nozzle 14 has reached the refueling position C (step 4), the output of the hose lowering signal is stopped in order to stop the lifting motor 12 (step 5), and at the same time the refueling amount is In order to reset the previous oil supply amount display value on the display 20 to zero, a display zero reset signal is output (step 6), and the oil supply amount counter K is reset to zero. Also,
In this state, the timer interrupt process shown in FIG. 6 starts (step 7).

Next, the refueling nozzle 14 reaches the refueling position C,
When the timer interrupt processing starts, a monitoring loop is formed to check whether the above-mentioned pump drive motor stop request signal has been output (step 8) and whether the hand lift switch 17 has been operated (step 9).

However, in most cases, actual refueling is performed by inserting the refueling nozzle 14 into the fuel tank, so when the refueling nozzle 14 is opened, the oil in the tank 5 is transferred to the piping 4, the pump 7, the flow meter 8, It is discharged from the oil supply nozzle 14 via the hose 13. During this time, the amount of oil supplied is measured by the flow meter 8, a flow pulse is output from the flow pulse transmitter 9, and the above-mentioned fifth
By the flow rate pulse interrupt process shown in the figure, the amount of oil to be supplied is displayed on the oil amount display 20.

If the refueling mode is normal refueling, when the desired amount of refueling is reached, the refueling nozzle 14 is closed, and the fuel nozzle 14 is closed.
Before a minute had passed, the hand lift switch 17
to raise the refueling nozzle 14. As a result, the pump drive motor stop request signal is not output in the judgment at step 8, so if the hand lift switch 17 is operated (step 9), the timer interrupt processing is stopped (step 10) and the pump stop signal is output. output to stop the pump drive motor 6 (step 11), and output a hose rise signal to rotate the lifting motor 12 upward (step 11).
17). As a result, the hose 1 is attached to the hose reel 11.
3 is wound up and the refueling nozzle 14 rises, and the nozzle position detection switch 15 causes the refueling nozzle 1 to
4 has reached the standby position B (step 18), the output of the hose rise signal is stopped,
The upward rotation of the hose lifting motor 12 is stopped (step 19), and the process is completed.

On the other hand, if the refueling mode is automatic full refueling and the automatic valve closing mechanism of the refueling nozzle 14 is activated, this may not be noticed even after 3 minutes have passed since the automatic valve closing mechanism was activated. be. In such a case, when three minutes have elapsed since the flow rate pulses were no longer output, a pump drive motor stop request signal is output from the timer T, so that a ``YES'' determination is made in step 8. As a result, from the control circuit 23 to the pump drive motor drive circuit 25
A pump stop signal is output, the pump drive motor 6 is stopped (step 12), and at the same time, the timer interrupt processing is stopped (step 13). The same applies to the case where three minutes have elapsed without any actual refueling even though the refueling nozzle 14 is at the refueling position C as a result of the processing in steps 1 to 7.
In this way, if three minutes elapse with the fuel nozzle 14 being inserted into the fuel tank or suspended at the fueling position C, the pump 7 will automatically stop.
Even if the oil supply nozzle 14 or the hose 13 is damaged, it is possible to prevent a large amount of oil from flowing out and causing a major accident.

Furthermore, after the processes of steps 12 and 13 described above are performed, a waiting loop is formed to determine whether or not the refueling continuation switch 18 has been operated (step 14), and whether or not the hand lift switch 17 has been operated (step 14). .
If the fuel tank becomes full during automatic refueling, refueling will end without additional refueling, so in this case, it is determined that the hand lift switch 17 was operated in step 15. Sometimes, the process proceeds in steps 15→17→18→19 and ends.

On the other hand, if additional refueling is required due to foaming in the fuel tank during automatic refueling, the refueling continuation switch 18 is operated, so in this case the process proceeds from steps 14 to 16, and the control circuit 23 outputs a pump drive signal to the pump drive motor drive circuit 25, and after restarting the pump 7, the process returns to step 7 to start timer interrupt processing. Then, the operator opens the refueling nozzle 14 again to perform additional refueling. As a result, oil is discharged from the oil supply nozzle 14, the amount of oil supplied is measured by the flow meter 8, the flow rate pulses are continuously counted by the amount counter K, and the amount of oil supplied is displayed on the amount display 20. Ru. Thus, even if the pump 7 once stops, it is possible to restart the pump 7 and perform additional refueling simply by operating the refueling continuation switch 18. and,
When the additional refueling is completed, the refueling nozzle 14 may be raised by operating the hand lift switch 17 in the same manner as described above.

In addition, in the embodiment, a suspended type oil supply device was illustrated as the oil supply device of the present invention, but it may also be applied to a fixed type oil supply device, and in this case, the nozzle switch provided on the nozzle hook is the nozzle position detection switch 1.
5. Applies to hand lift switch 17, etc.

Further, the flow rate pulse interrupt processing in Fig. 5 corresponds to the refueling amount calculation means, steps 4 to 6 in Fig. 4 correspond to the first refueling control means, and the timer interrupt processing in Fig. 6 corresponds to the refueling amount calculation means. This corresponds to the interruption/completion detection means, steps 8 and 12 in FIG. 4 correspond to the second oil supply control means, and steps 14 and 16 correspond to the third oil supply control means.

[Effect of idea]

The lubrication device according to the present invention is as described in detail above, and when lubrication is not performed for a predetermined period of time, the pump can be stopped once and then restarted simply by operating the lubrication continuation switch. Therefore, even if the hose or refueling nozzle is damaged while the pump is stopped, oil spill accidents can be minimized, and the refueling operation, counting and display of the amount of refueling can be continued with just a switch operation, and it is possible to process slips, etc. can be simplified.

[Brief explanation of drawings]

Figure 1 is a functional block diagram showing the configuration of the present invention.
Fig. 2 is an overall configuration diagram of the suspended oil supply system used in the embodiment of the present invention, Fig. 3 is a block diagram showing the circuit configuration, Fig. 4 is a flow chart showing the lubrication process, and Fig. 5 is a flow chart of the flow rate pulse interrupt. Flowchart showing processing. FIG. 6 is a flowchart showing timer interrupt processing. 4... Piping, 5... Tank, 6... Pump drive motor, 7... Pump, 8... Flow meter, 9...
Flow rate pulse transmitter, 10... Hose elevator, 13
... Hose, 14 ... Oil supply nozzle, 15 ... Nozzle position detection switch, 17 ... Hand lift switch, 18 ... Oil supply continuation switch, 20 ... Oil supply amount indicator, 23 ... Control circuit.

Claims (1)

[Scope of Claim for Utility Model Registration] Piping that communicates with a tank on one side and is connected to a hose with a refueling nozzle at the tip on the other side, a pump installed in the middle of the piping and driven by a pump drive motor, and a flow rate. a flow meter that measures the flow rate, a refueling amount calculation means that calculates the flow rate pulse output from a flow pulse transmitter attached to the flowmeter and displays the refueling amount on a refueling amount display, and the refueling nozzle is in a storage position. a refueling work start detecting means for detecting separation from the refueling work start signal and outputting a refueling work start signal; and starting the pump driving motor by inputting the refueling work start signal output from the refueling work start detecting means; a first refueling control means for resetting the refueling amount indicator to zero; and after the pump drive motor is started by the first refueling control means, refueling is performed by the refueling nozzle for a predetermined period of time. When the refueling work is not being carried out, a refueling interruption/end detection means detects the interruption or end of the refueling work, and a second stop of the pump driving motor is provided by inputting a detection signal output from the refueling interruption/end detecting means. a refueling control means; a refueling continuation switch provided in the middle of the refueling nozzle or hose; and when the pump drive motor is stopped by the second refueling control means, an operation signal from the refueling continuation switch. a third oil supply control means for restarting the pump drive motor in response to an input from the pump drive motor;