JP2008137699A - Oiling equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide oiling equipment which enables a fuel tank to be completely filled with fuel oil, without making the fuel oil overflow from the fuel tank of an automobile. <P>SOLUTION: This oiling equipment is provided with a refueling control unit (28) which is equipped with a control means for outputting a full opening signal to a control valve (15) by receiving an on-signal of a nozzle switch (22), for outputting a driving signal into a pump driving motor (13), for outputting a closing signal to the control valve (15) by receiving a first liquid detection signal of a liquid level sensor (26), for outputting a stop signal to the pump driving motor (13), for outputting a small opening signal to the control valve (15) after a lapse of a set amount of time, for outputting the driving signal to the pump driving motor (13), for outputting the closing signal to the control valve (15) by receiving a second liquid detection signal of the liquid level sensor (26), and for outputting the stop signal into the pump driving motor (13). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fueling device that supplies fuel oil to an automobile, and more particularly to a fueling device that can be suitably implemented in a self-service type fueling station where a customer himself supplies fuel.

  In recent years, self-service gas stations that are refueled by customers themselves are becoming popular. The refueling equipment installed at the self-service refueling station is equipped with a liquid level sensor at the refueling nozzle so that customers who are unfamiliar with refueling can refuel. When the liquid level sensor detects oil, the refueling automatically stops. In addition, the danger of oil overflowing from the oil filler opening is prevented.

  By the way, the fuel oil of an automobile is easy to foam, and when the tank is almost full, the foam on the liquid level rises in the fuel filler opening of the fuel tank, and the liquid level sensor detects this foam and the fuel supply automatically stops. When the bubbles disappear after the fuel supply is automatically stopped in this way, there is a considerable space in the fuel tank where the fuel can be supplied, and refueling is performed to fill the space and fill the tank completely. This additional oil supply is dangerous because the amount of oil supply is small, and if the oil is supplied with a large discharge amount, the oil may overflow.

  Patent Document 1 discloses an oil supply device that includes a liquid level sensor including a transmitter and a receiver in an oil supply nozzle, and closes a control valve and automatically stops oil supply when the liquid level sensor detects oil. Although this is effective, since refueling is stopped by the first liquid detection, there is a disadvantage that refueling cannot be performed to a full tank.

Further, in Patent Document 2, when the lever is pulled to the upper stage, the main valve is fully opened. When the liquid level sensor detects the liquid level, the main valve is closed and refueling automatically stops. When the lever is pulled to the middle stage, the main valve is opened. A refueling nozzle is disclosed in which the main valve is closed and the refueling automatically stops when the liquid level sensor detects the liquid level. This is also effective, but if the lever is pulled too much when the closed main valve is restarted, the main valve may be fully opened and refueling is resumed with a large discharge, which may cause the oil to overflow.
JP 58-208628 A JP-A-8-230999

  The present invention has been made in view of the above, and an object of the present invention is to provide an oil supply device that can completely fill the fuel tank without causing oil to overflow from the fuel tank of the automobile.

  The oil supply device of the present invention includes a pump (14), a control valve (15), and a flow meter (17) interposed in an oil supply pipe (12), and an oil supply hose (19) in a discharge pipe (18) of the flow meter (17). ), A liquid level sensor (26, 49, 69) is provided on the oil supply nozzle (20, 41, 61) provided at the tip of the oil supply hose (19), and a nozzle for applying the oil supply nozzle (20, 41, 61) A nozzle switch (22) is provided on the hook (21), and an on / off signal of the nozzle switch (22) and a liquid detection signal of the liquid level sensors (26, 49, 69) are input to the oil supply control device (28) to supply oil. The controller (28) inputs an open / close signal to the control valve (15) and a drive / stop signal to the pump drive motor (13), and the oil supply controller (28) turns on the nozzle switch (22). In response to the signal, a fully open signal is output to the control valve (15). The drive signal is output to the pump drive motor (13), the first liquid detection signal of the liquid level sensor (26, 49, 69) is received, and the close signal is output to the control valve (15). A stop signal is output to the drive motor (13), a small opening signal is output to the control valve (15) after a certain time, a drive signal is output to the pump drive motor (13), and the liquid level sensor (26 49, 69), a control means for receiving a second liquid detection signal and outputting a close signal to the control valve (15) and outputting a stop signal to the pump driving motor (13).

  Further, the discharge pipes (25, 46, 66) of the oil supply nozzles (20, 41, 61) are provided with spears (27, 50, 70) for nozzle insertion positioning and oil droplet scattering prevention.

The present invention has the following excellent effects.
(1) First, oil is supplied with a large discharge, and when the tank is almost full, the oil is supplied with a small discharge, so that it can be supplied to a full tank in a short time.
(2) After the tank is almost full, the oil is supplied with small discharge, so the oil does not overflow.
(3) Since the control valve is opened slightly for small discharge, it is easy to operate the valve opening lever.
(4) Since the discharge pipe of the oil supply nozzle is provided with a soot, if the soot is brought into contact with the oil supply port and the oil is supplied, the liquid level sensor is positioned at a predetermined depth and the liquid level can be detected accurately. There is no risk of oil overflow.
(5) Since the discharge pipe of the oil supply nozzle is provided with a soot, it is possible to return the oil droplet that pops out into the oil supply port and prevent the risk of oil jumping out.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a fueling device of the present invention. A housing 2 of the fueling device 1 has a plurality of oiling systems, for example, high octane gasoline 3, regular gasoline 4, and light oil 5 incorporated therein. An oil supply operation panel 6 and an oil supply amount indicator 7 are provided on the front surface of the housing 2, and an indicator lamp 8 is provided on the housing 2. The refueling operation panel 6 is provided with a device 9 for specifying the type of oil to be refueled, a device 10 for paying a refueling fee, a call button 11 for calling a worker, and the like. The call button 11 is pressed by a customer who has a question about the refueling work and turns on the indicator lamp 8 to notify the worker at the refueling station.

FIG. 2 is a schematic diagram of the oil supply device 1. The oil supply pipe 12 of each of the oil supply systems 3, 4, 5 has a pump 14 driven by a motor 13, an electromagnetic control valve 15, and a flow rate pulse transmitter 16. 17 is provided, and an oil supply nozzle 20 is provided at the tip of an oil supply hose 19 connected to the discharge pipe 18 of the flow meter 17. The oil supply nozzle 20 is hung on a nozzle hook 21, and the nozzle hook 21 is provided with a nozzle switch 22.
The control valve 15 may be provided in the discharge pipe 18 on the downstream side of the flow meter 17 as indicated by a dotted line 15a.

  FIG. 3 is a side view of the oil supply nozzle 20. The oil supply nozzle 20 is attached to the tip of the oil supply hose 19, a main valve 24 that is opened and closed by a lever 23 is provided, and a liquid level sensor 26 is provided at the tip of the discharge pipe 25. It has been. In addition, as the liquid level sensor 26, the optical liquid level sensor which has a transmission part and a receiving part as shown in patent document 1 mentioned above can be implemented suitably. Further, the flange 27 provided at the rear end of the discharge pipe 25 positions the insertion depth of the discharge pipe 25 into the fuel filler port of the automobile, and prevents the oil splashing from the fuel filler port from falling on the operator. It is a guard.

  FIG. 4 is a block diagram showing the control relationship of the oil supply device 1. The on / off signal of the nozzle switch 22, the flow rate signal of the flow rate pulse transmitter 16, and the liquid detection signal of the liquid level sensor 26 are input to the oil supply control device 28. is doing. From the oil supply control device 28, a drive / stop signal is input to the motor 13 that drives the pump 14, an oil supply amount display signal is input to the oil supply amount indicator 7, and an open / close signal is input to the control valve 15.

  The oil supply control device 28 includes a counting means 29 that receives a flow rate pulse signal from the flow rate pulse transmitter 16 and counts the amount of oil supply, a time measuring means 30 that measures the progress after receiving a liquid detection signal from the liquid level sensor 26, and a motor. 13, motor drive means 31 for outputting a drive / stop signal, indicator drive means 32 for outputting the oil supply amount to the oil supply amount indicator 7, valve opening storage means 33 for storing the valve opening, and valve opening storage means 33. The valve drive means 34 for outputting an open / close signal to the control valve 15 based on the stored value is provided.

Next, the mode of refueling will be described based on the flow chart of the refueling operation shown in FIG.
The car that has come to the refueling station stops at the refueling device 1, designates the oil type to be refueled with the device 9 that designates the oil type of the refueling operation panel 6, and pays with the device 10 that settles the refueling fee. input. Then, the discharge pipe 25 of the fueling nozzle 20 removed from the nozzle hook 21 of the fueling device 1 is inserted until the rod 27 comes into contact with the fueling port of the automobile, the lever 23 of the fueling nozzle 20 is pulled and the valve 24 is opened to lubricate. Begin.

In this way, if the reed 27 is brought into contact with the oil supply port to supply oil, the liquid level sensor 26 is positioned at a predetermined depth, so that the liquid can be detected accurately and there is no possibility of overflowing the oil. Further, the oil droplets that are about to jump out from the fuel filler port can hit the spear 27 and return into the fuel filler port, thereby preventing the danger of jumping out.
When the oil supply nozzle 20 is removed from the nozzle hook 21, an ON signal is input from the nozzle switch 22 to the oil supply control device 28 (ST1), and the valve drive means 34 of the oil supply control device 28 is stored in the valve opening degree storage means 33. Based on the valve opening, a fully open signal is output to the control valve 15, and the motor drive means 31 outputs a drive signal to the motor 13 (ST2). In response to this fully open signal, the control valve 15 is fully opened, and in response to the drive signal, the motor 13 rotates to drive the pump 14.

  When the main valve 24 is opened by pulling the lever 23 of the oil supply nozzle 20, the oil supply is started with a large discharge of, for example, about 35 L / min. The oil in the oil supply pipe 12 is pump 14, control valve 15, flow meter 17, discharge pipe. 18, fuel is supplied into the fuel tank of the automobile through a fuel hose 19 and a fuel nozzle 20.

  In this way, the large discharge fuel supply process is executed, the liquid level in the fuel tank rises, and when the liquid level sensor 26 of the fuel supply nozzle 20 detects bubbles on the liquid level, the main valve 24 of the fuel supply nozzle 20 is closed. At the same time, a liquid detection signal is input to the oil supply control device 28 (ST3), the valve driving means 34 outputs a closing signal to the control valve 15, and the motor driving means 31 outputs a stop signal to the motor 13 (ST4). In response to this close signal, the control valve 15 is fully closed, and in response to the stop signal, the motor 13 stops and the drive of the pump 14 is stopped.

  When the time on which the bubbles on the liquid level in the fuel filler port of the automobile are expected to disappear, for example, 3 seconds, is counted by the time measuring means 30 (ST5), the valve driving means 34 outputs a small opening signal to the control valve 15. The motor drive means 31 outputs a drive signal to the motor 13 (ST6). In response to this small opening signal, the control valve 15 opens small, and in response to the driving signal, the motor 13 rotates and the pump 14 is driven.

When the lever 23 of the fueling nozzle 20 is pulled and the main valve 24 is opened again, the fueling is resumed with a small discharge of, for example, about 20 L / min. In this way, when refueling is resumed after the tank is almost full, there is no possibility that the control valve 15 is pressed by small discharge and refueled, and the oil overflows.
Thus, when the small discharge oil supply process is performed and the liquid level in the fuel tank rises and the liquid level sensor 26 detects the liquid level, the main valve 24 of the fuel supply nozzle 20 is closed. At the same time, a liquid detection signal is input to the oil supply control device 28 (ST7), the control valve 15 is fully closed, the motor 13 is stopped, and the drive of the pump 14 is stopped (ST8).

  Finally, the refueling nozzle 20 pulled out from the refueling port of the automobile is hung on the nozzle hook 21 and the OFF signal of the nozzle switch 22 is input to the refueling control device 28 (ST9), and the refueling end processing such as the refueling fee settlement is performed. (ST10), the refueling operation is completed.

FIG. 6 is a flowchart showing an aspect of displaying the amount of oil supply. When the oil supply nozzle 20 is removed from the nozzle hook 21 and an ON signal is input from the nozzle switch 22 to the oil supply control device 28 (ST21), the counting means of the oil supply control device 28 is displayed. The previous refueling amount stored in 29 is returned to zero (ST22).
When refueling is performed and a flow rate signal is input from the flow rate pulse transmitter 16 of the flow meter 17 to the refueling control device 28 (ST23), the refueling amount is calculated by the counting means 29, and the refueling amount indicator 7 is displayed from the display driving means 32. An oil supply amount display signal is output and displayed (ST24).

  Then, the refueling is finished, the refueling nozzle 20 is hung on the nozzle hook 21, and an off signal is input from the nozzle switch 22 to the refueling control device 28 (ST25), and the control of the refueling amount display is finished.

  Next, an embodiment in which the liquid level sensor and the spear according to the present invention are provided in an oil supply nozzle as shown in Patent Document 2 will be described. As shown in FIGS. 7 and 8, a negative pressure is generated in the fuel supply nozzle 41 by a diaphragm 43 that releases the valve opening hold of the main valve 42, a diaphragm chamber 44 partitioned by the diaphragm 43, and a discharged liquid flow. The negative pressure generating part 45 and a liquid level detecting port 47 are provided at the tip of the discharge pipe 46, and the diaphragm chamber 44, the negative pressure generating part 45 and the liquid level detecting port 47 are connected by a conduit 48. A liquid level sensor 49 is provided in the diaphragm chamber 44, and a gutter 50 is provided at the rear end of the discharge pipe 46.

  As the liquid level sensor 49, a pressure sensor for detecting the negative pressure in the diaphragm chamber 44 or a deflection sensor for detecting the deflection of the diaphragm 43 can be suitably implemented. In addition, as described above, the rod 50 provided in the discharge pipe 46 positions the insertion depth of the discharge pipe 46 into the fuel filler port of the automobile, and the oil splashing from the fuel filler port falls on the operator. It is a guard to prevent it.

  When the lever 51 of the oil supply nozzle 41 is pulled, the small valve 52 opens, the oil in the hydraulic pressure chamber 58 flows out from the outflow passage 53, the main valve 42 is opened by the operating pressure on the main valve 42, and the oil in the oil supply hose 54 is It is discharged from the discharge pipe 46 into the fueling port of the automobile. Then, when the liquid level detection port 47 is blocked by the bubbles that are filled up to a substantially full level and rise in the oil supply port, the negative pressure generated in the negative pressure generating unit 45 enters the diaphragm chamber 44 via the conduit 48. Then, the diaphragm 43 is bent, the locking of the rod 56 by the locking pin 55 is released, the small valve 52 is closed, and the fluid pressure chamber 58 becomes positive pressure by the oil flowing in from the inflow passage 57, and the main valve 42 is closed. .

  The fact that the negative pressure has been transmitted into the diaphragm chamber 44 is detected by the liquid level sensor 49, and a liquid detection signal of the liquid level sensor 49 is output to the oil supply control device 28. Then, after a certain period of time, the control valve 15 is opened slightly, and the lever 51 is pulled to add and refuel, so that no large discharge occurs regardless of the opening of the main valve 42 and the oil does not overflow.

  Next, a description will be given of an embodiment in which the liquid level sensor and the ridge according to the present invention are provided on a conventional oiling nozzle. As shown in FIGS. 9 and 10, a negative pressure is also generated in the fuel supply nozzle 61 by the diaphragm 63 for releasing the main valve 62 from being held open, the diaphragm chamber 64 partitioned by the diaphragm 63, and the discharged liquid flow. The negative pressure generating section 65 and the discharge pipe 66 are provided with a liquid level detecting port 67 at the tip, and the diaphragm chamber 64, the negative pressure generating section 65, and the liquid level detecting port 67 are connected by a conduit 68. A liquid level sensor 69 is provided in the diaphragm chamber 64, and a flange 70 is provided at the rear end of the discharge pipe 66.

  As described above, as the liquid level sensor 69, a pressure sensor for detecting the negative pressure in the diaphragm chamber 64 or a deflection sensor for detecting the deflection of the diaphragm 63 can be suitably implemented. Moreover, the flange 70 provided in the discharge pipe 66 positions the insertion depth of the discharge pipe 66 to the fuel filler port of the automobile, and prevents the oil splashing from the fuel filler port from falling on the operator. It is.

  When the lever 71 of the oil supply nozzle 61 is pulled, the main valve 62 is opened, and the oil in the oil supply hose 72 is discharged from the discharge pipe 66 into the oil supply port of the automobile. Then, when the liquid level detection port 67 is blocked by the bubbles that are filled up to a substantially full level and rise in the filling port, the negative pressure generated in the negative pressure generating unit 65 enters the diaphragm chamber 64 through the conduit 68. Then, the diaphragm 63 is bent, the locking of the rod 74 by the locking pin 73 is released, and the main valve 62 is closed.

  The fact that the negative pressure has been transmitted into the diaphragm chamber 64 is detected by the liquid level sensor 69, and the liquid detection signal of the liquid level sensor 69 is output to the oil supply control device 28. Then, the control valve 15 is opened slightly after a certain period of time, and even if the lever 71 is pulled and the main valve 62 is opened widely for refueling, there is no large discharge and no oil overflows. Therefore, according to the present invention, as shown in FIGS. 7 to 10, a known oiling nozzle in which the opening degree of the main valve 42 or 62 cannot be adjusted can be used effectively.

  Since the fuel can be fully filled in a short time and there is no risk of overflowing even if the full tank is filled, an oil supply device that can be suitably installed in a self-service gas station where the customer himself refuels can be provided.

The front view of the oil supply apparatus of this invention. The schematic diagram of a fueling apparatus. The side view of a fueling nozzle. The block diagram which shows the control relationship of a fueling apparatus. The flowchart which shows the aspect of the oil supply operation of a fuel supply apparatus. The flowchart which shows the aspect of the oil supply amount display of an oil supply apparatus. Side surface sectional drawing which implemented this invention to the oil supply nozzle of patent document 2. FIG. The plane sectional view which carried out the present invention to the oil supply nozzle of patent documents 2. Side surface sectional drawing which implemented this invention to the conventional oil supply nozzle. The plane sectional view which carried out the present invention to the conventional oil supply nozzle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Lubrication device 2 ... Housing 3, 4, 5 ... Lubrication system 6 ... Lubrication operation panel 7 ... Lubrication amount indicator 8 ... Indicator light 9 ... Designate oil type Equipment 10 ... Equipment 11 for refueling charges ... Call button 12 ... Oil supply pipe 13 ... Motor 14 ... Pump 15 ... Control valve 16 ... Flow rate pulse transmitter 17. .... Flow meter 18 ... Discharge pipe 19 ... Fueling hose 20 ... Fueling nozzle 21 ... Nozzle hook 22 ... Nozzle switch 23 ... Lever 24 ... Main valve 25 ... Discharge Pipe 26 ... Liquid level sensor 27 ... 鍔 28 ... Lubrication control device 29 ... Counting means 30 ... Timing means 31 ... Motor drive means 32 ... Display drive means 33 ... .Valve opening degree storage means 34... Valve driving means 41, 61. 3, 63 ... Diaphragms 44, 64 ... Diaphragm chambers 45, 65 ... Negative pressure generators 46, 66 ... Discharge pipes 47, 67 ... Liquid level detection ports 48, 68 ... Conduit 49, 69 ... Liquid level sensors 50, 70 ... 鍔 51, 71 ... Lever 52 ... Small valve 53 ... Outflow passage 54, 72 ... Refueling hose 55, 73 ... Stop pins 56, 74 ... Rod 57 ... Inflow passage 58 ... Hydraulic chamber

Claims (2)

A pump, a control valve, and a flow meter are installed in the oil supply pipe, an oil supply hose is connected to the discharge pipe of the flow meter, a liquid level sensor is provided at the oil supply nozzle provided at the tip of the oil supply hose, and a nozzle hook for applying the oil supply nozzle is used. Nozzle switch is provided, nozzle switch ON / OFF signal and liquid level sensor liquid detection signal are input to the lubrication control device, open / close signal from the lubrication control device to the control valve, and drive / stop signal to the pump drive motor The oil supply control device receives the ON signal of the nozzle switch, outputs a fully open signal to the control valve, outputs a drive signal to the pump driving motor, and the first liquid detection signal of the liquid level sensor In response, a closing signal is output to the control valve, a stop signal is output to the pump driving motor, a small opening signal is output to the control valve after a certain time, and a driving signal is output to the pump driving motor. 2nd of surface sensor Oiler liquid detection signal receiving outputs the close signal to the control valve, characterized in that the motor for the pump drive is provided with control means for outputting a stop signal. The oil supply device according to claim 1, wherein the discharge pipe of the oil supply nozzle is provided with a nozzle for positioning for inserting the nozzle and preventing oil droplets from scattering.

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