JPH0575199U - Refueling device - Google Patents

Abstract

(57) [Summary] [Structure] A suction means for sucking the oil vapor in the tank to be refueled for supplying the oil liquid by the fuel nozzle, and a discharging means for discharging the oil vapor sucked by the suction means and cleaning the oil vapor detecting means. Heating and keeping means 42 for heating and keeping
46 is provided. [Effects] Since the heating and heat retaining means 42 and 46 heat and retain the heat of the suction means and the discharge means, it is possible to eliminate the influence of the temperature drop on the suction means and the discharge means even in use in a cold region. The performance and the discharging performance of the discharging means are not deteriorated. Therefore,
It is possible to prevent deterioration of the performance of the suction means and the discharge means at low temperature, prevent a delay before the start of refueling operation at low temperature, and sufficiently clean the oil vapor detection means.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a refueling device, and more particularly to a refueling device suitable for use in cold regions.

[0002]

[Prior Art]

 For the purpose of preventing erroneous refueling, the refueling device includes a suction means for sucking the oil vapor in the refueling target tank that supplies the oil liquid by the refueling nozzle, and an oil vapor detecting means for detecting the oil vapor sucked by the suction means. , A discharge means for discharging the oil vapor sucked by the suction means and cleaning the oil vapor detection means. That is, this is because the suction means sucks the oil vapor in the tank to be refueled, the type of the sucked oil vapor is detected by the oil vapor detection means, and the detection result is the type of the oil liquid in the oil liquid storage tank. If the oil vapor is detected, the oil supply operation is performed, and the sucked oil vapor is discharged by the discharge means to clean the oil vapor detection means.

[0003]

[Problems to be solved by the device]

 However, since the diaphragm pump is generally adopted as the suction means and the discharge means in the oil supply device having the above-mentioned configuration, the diaphragm pump made of a rubber material is usually hardened at a low temperature of, for example, -10 ° C or lower. Will be done. For this reason, in the suction means, the suction performance such as the suction flow velocity decreases, and the time for the oil vapor to reach the oil vapor detection means from the oil supply nozzle becomes longer, depending on the detection result by the oil vapor detection means. There was a problem that it took a long time to start the refueling operation. Further, due to the same reason, the discharging performance of the discharging means is also deteriorated, which causes a problem that the oil vapor detecting means cannot be sufficiently cleaned. Furthermore, when the humidity is high, not only at low temperature, the discharge means cleans the oil vapor detection means with moist air, so that the oil vapor of the oil vapor detection means can be cleaned quickly. There was a problem that I could not.

Therefore, an object of the present invention is to prevent the deterioration of the performance of the suction means and the discharge means at a low temperature and the deterioration of the performance of the discharge means at a high humidity, thereby delaying the start of refueling operation at a low temperature. It is an object of the present invention to provide an oil supply device capable of preventing the above-mentioned problems, sufficiently cleaning the oil vapor detection means, and quickly cleaning the oil vapor of the oil vapor detection means at high humidity.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, an oil supply device of the present invention has an oil supply nozzle and a liquid supply means for supplying the oil liquid of an oil liquid storage tank to the oil supply nozzle, and the oil supply nozzle supplies the oil liquid. Suction means for sucking the oil vapor in the oil supply target tank to be supplied, oil vapor detection means for detecting the oil vapor sucked by the suction means, and oil vapor detection for discharging the oil vapor sucked by the suction means A discharging means for cleaning the means is provided, and a heating and warming means for heating and keeping the suction means and the discharging means warm is provided.

[0006]

[Action]

 According to the oil supply device of the present invention, since the heating and heat retaining means heats and heats the suction means and the discharge means, it is possible to eliminate the influence due to the temperature drop when they are used in cold regions. The suction performance of the means and the discharge performance of the discharge means are not deteriorated. Moreover, if the heater is operated according to the humidity, the air passing near the discharge means will be warmed to the dry state even when used under high humidity conditions, and the oil vapor of the oil vapor detection means will be cleaned well. be able to.

[0007]

【Example】

 An oil supply device according to an embodiment of the present invention will be described below with reference to the drawings.

First, the overall configuration of the oil supply apparatus of this embodiment will be described with reference to FIG. The oil supply device of the present embodiment includes a pipe 1 connected from an underground oil liquid storage tank (not shown) to a suction pipe (not shown), a pump unit 2 for pumping the oil liquid through the pipe 1, and a gas liquid A pump unit 4 having an air separator 3 for separating the pump, a pump motor 5 for driving the pump 2, and a relief pipe 6 provided between the pipe 1 and the air separator 3. , A flow meter 7 for measuring the flow rate, a flow rate pulse transmitter 8 for outputting a pulse proportional to the flow rate, a refueling hose 9 connected to the downstream side of the pipe 1, and a tip portion of the refueling hose 9 And a nozzle switch 12 that outputs an OFF / ON signal when the oil supply nozzle 10 is hooked / unhooked with respect to the nozzle housing portion 11. An intake hose 13 having one end opened to the tip of the discharge pipe 10A of the oil supply nozzle 10 and the other end communicating with an intake pipe to be described later for intake / exhaust of oil vapor, and an intake pipe communicating with the intake hose 13 14 and the oil that is sucked from the inside of the intake pipe 14 through the intake hose 13 and the intake pipe 14 from a detection reference tank (tank for determining the oil type of the underground tank) or a tank to be refueled such as a vehicle fuel tank. An oil vapor sensor 15 which is an oil vapor detecting means for detecting the concentration of vapor, an intake pump 16 which is a suction means for absorbing oil vapor, an exhaust pump 17 which is an exhausting means for exhausting residual oil vapor, and an intake / exhaust operation And an intake / exhaust unit 19 having an electromagnetic three-way valve 18 that is switched in accordance with the above. In addition, a lubrication indicator 20 that displays the amount of lubrication, etc., and a setting indicator 21 that displays the set oil type of the refueling device ・ Self-learning mode for the refueling device (identifies the oil type of the underground tank and sets the identified oil type of the refueling device Setting switch 22 for setting the oil type) and reset lubrication mode (the oil type determination function is in the released state, and the pump motor 5 is only operated under the condition that the oil supply nozzle 10 is removed from the nozzle housing portion 11). A self-learning setting operation section 24 having a reset switch 23 for driving and enabling refueling, and a reset flag (set state: the oil type determination function is in a released state, and the refueling nozzle 10 is in the nozzle housing section). Reset refueling state that allows refueling only when it is removed from 11. Reset state: Refueling when the fuel tank oil type and the set oil type match, with the oil type determination function activated. And a control unit 25 for controlling the built-fueling device each section normal lubrication state) to ability. The pump portion 2 and the pump motor 5 of the pump unit 4 described above constitute a liquid feeding means.

Next, the refueling process of the refueling device having the above configuration will be described with reference to FIG. When the worker removes the fueling nozzle 10 of the fueling device from the nozzle housing 11 in order to start fueling the fuel tank of the vehicle or the like, the control unit 25 is reset as the nozzle switch 12 is turned on (step SA1). The state of the flag is determined (step SA2). When the reset flag is in the set state (the state in which the oil type determination function is canceled and the fuel is supplied), the control unit 25 proceeds to step SA6, which will be described later, drives the pump motor 5, and drives the pump unit 2 from the underground tank. When the reset flag is in the reset state (the state in which the oil type determination function is activated to supply oil), the intake / exhaust unit 19 is driven to intake air (step SA3). ). As a result, when the worker inserts the refueling nozzle 10 into the fuel tank of the vehicle, the oil vapor in the fuel tank is sucked toward the oil vapor sensor 15 through the intake hose 13 and the intake pipe 14. Determines based on the detection result of the oil vapor sensor 15 whether the fuel tank oil type and the set oil type of the oil supply device match (step SA4). When the control unit 25 determines that the fuel tank oil type and the set oil type match, the suction drive of the intake / exhaust unit 19 is stopped (step SA5), the pump motor 5 is driven, and the pump unit 2 drives the fuel from the underground tank. The pumping of the oil liquid is started to be ready for refueling (step SA6). As the worker refuels the vehicle or the like, the control unit 25 performs measurement calculation of the refueling amount based on the flow rate pulse output from the flow rate pulse transmitter 8 (step SA7). On the other hand, when the control unit 25 determines in step SA4 that the fuel tank oil type and the set oil type do not match, the pump motor 5 is not driven, and thereafter, the operator sets the oil supply nozzle 10 to the nozzle. When the nozzle switch 12 is turned off by hooking it back into the storage section 11 (step SA8), the process proceeds to step SA12 described below, and the suction / exhaust unit 19 is driven to exhaust for a predetermined time, and the oil vapor sensor 15 and the intake hose are driven. Cleaning of 13 is performed.

Next, the control unit 25 determines whether the nozzle switch 12 is ON or OFF, that is, whether or not the worker hooks the refueling nozzle 10 back into the nozzle housing unit 11 at the end of refueling work (step SA9), When the oil supply nozzle 10 is hooked back into the nozzle housing portion 11, the drive of the pump motor 5 is stopped and the pumping of the oil liquid from the underground tank by the pump portion 2 is stopped (step SA10). Next, the control unit 25 determines the state of the reset flag (step SA11), and when the reset flag is in the reset state (a state in which the oil type determination function is activated to supply oil), the intake / exhaust unit 19 is driven for intake. After stopping, the exhaust drive is performed for a predetermined time, and the oil vapor sensor 15 and the intake hose 13 are cleaned (step SA12). As a result, the residual oil vapor of the intake hose 13, the intake pipe 14, and the oil vapor sensor 15 is exhausted to the outside of the oil supply device, so that both are cleaned. On the other hand, when the reset flag is in the set state (the state in which the oil type determination function is canceled to perform refueling) in step SA11, the control unit 25 resets the reset flag in preparation for the next refueling (step SA13). After this, the control unit 25 confirms whether or not the oil vapor sensor 15 has returned to the oil vapor detectable state at the next refueling due to the cleaning (step SA14), and if not recovered, the above step SA12. Returning to step S21, the evacuation drive of the suction / exhaust unit 19 is carried out for a predetermined time, while if it has returned, the above series of processing is terminated. The reset switch 23 is usually used when fueling, for example, a motorcycle having a shallow fuel tank.

In this embodiment, diaphragm pumps are used as the intake pump 16 and the exhaust pump 17 described above, and these are incorporated into the casing 31 as one unit 30 as shown in FIG. Has been. That is, the unit 30 forms the outer shell of the unit 31 and the casing 31 is provided with four external communication portions 32 to 35 on the side surface portion and the opening portion 36 on the upper surface portion, and inside the casing 31. The built-in intake pump 16 and exhaust pump 17, an intake tube 37a for communicating the two external communication parts 32 and 34 in the casing 31 with the intake pump 16 interposed therebetween, An exhaust tube 37b that connects the external communication portions 33 and 35 of other Nika places with the exhaust pump 17 interposed along the way, and a pump power supply that conducts electricity to the intake pump 16 and the exhaust pump 17 from an external power supply. Section 38. The intake pump 16 is designed to flow gas from the external communication portion 34 side to the external communication portion 32 side by driving an internal rubber diaphragm (not shown). Gas is made to flow from the side of the external communication portion 33 to the side of the external communication portion 35 by driving the diaphragm (the flow of gas is shown by the broken line arrow in FIG. 3). In addition, the external communication parts 34 and 35 are connected to the electromagnetic three-way valve 18 described above, and the external communication parts 32 and 33 are connected to the outside air.

As shown in FIG. 4, the unit 30 is provided with a cover 39 for maintenance, etc., which is attached to the lower surface portion of the casing 31 in FIG. 4 by a bolt or the like so as to close the opening 36 from the outside. It has. The cover 39 is provided with a recess 40 having a substantially rectangular shape which is recessed one step in a direction opposite to the mounting direction (downward in FIG. 4) at a central position corresponding to the opening 36 of the casing 31 when the casing 31 is mounted. As shown in FIG. 5, the bottom portion 41 of the recess 40 has a long side along one long side, one short side continuous with this, and the other long side continuous with this. The data 42 is embedded. The cover 39 is manufactured by casting aluminum, and the heater 42 is cast in the cover 39 in the above-described state when the cover 39 is cast. At both ends of the heater 42, as shown in FIGS. 5 and 6, there are provided a pair of cables 44, 45, one end of which is connected to a heater power supply 43 provided in the center of the cover 39 and electrically conductive from an external power source. The other ends are connected. A detector 46 fixed to the inside of the bottom surface 41 of the recess 40 is connected to one of the cables 44, and the detector 46 detects the temperature and a circuit. It is mainly composed of a substrate 47 (see FIG. 7). The circuit board 47 compares the temperature detected by the detection element 46a with a preset value, and outputs a signal to the switch circuit 48, which will be described later, when the detected temperature is equal to or lower than the set value. The switch circuit 48 receives the output signal from the comparison circuit 49 and energizes the heater 42. Here, the above heater 42 and the detector 46 constitute the heating and heat retaining means of this embodiment.

As described above, the oil supply system of this embodiment includes the heater 42 in the cover 39 that closes the opening 36 of the casing 31 that houses the intake pump 16 and the exhaust pump 17. The temperature in the casing 31 is detected by the detection element 46a of the detector 46, and the comparison circuit 49 constantly compares it with a preset value. When the temperature in the casing 31 becomes less than or equal to this preset value, the comparison circuit When a signal is output from the switch circuit 48 from 49, the heater 42 is energized to heat the inside of the casing 31. As a result, the inside of the casing 31 is always maintained within the predetermined temperature range, and even when the casing 31 is used in a cold region, it is possible to eliminate the influence of a decrease in the temperature on the casing 31 and improve the suction performance of the intake pump 16. The discharge performance of the exhaust pump 17 does not deteriorate. Therefore, it is possible to prevent performance deterioration of the suction pump 16 and the exhaust pump 17 at low temperature, especially due to hardening of these diaphragms, prevent delay until start of refueling operation at low temperature, and sufficiently clean the oil vapor sensor 15. You will be able to do it. Here, the temperature at which the heater 42 is operated is naturally set to a value at which the intake pump 16 and the exhaust pump 17 can be operated well.

Further, the detection element 46a of the detector 46 is not for detecting temperature but for detecting humidity, and the comparator circuit 49 outputs a signal when the humidity exceeds a predetermined value set in advance. By operating the heater 42 according to the humidity, the air passing near the exhaust pump 17 is warmed to be in a dry state even when the heater 42 is used under high humidity conditions. Therefore, it is possible to prevent the performance of the exhaust pump 17 from deteriorating at high humidity and to quickly clean the oil vapor of the oil vapor sensor 15 at high humidity.

Further, since the cover 39 is provided for closing the opening 36 of the casing 31 for maintenance, the heater 42, the detector 46, and the like are provided, so that the configuration is used in a cold region. It is possible to easily change the specifications of the oil supply device and the normal oil supply device that does not require the heater 42 and the like by changing the cover 39 or the like. Further, even in a refueling device which has been conventionally used, it is possible to easily take measures against cold regions by simply changing the cover 39 including the heater 42.

As the detector 46, it is of course possible to provide a thermistor instead of the detection element 46a and the circuit board 47 and keep the temperature constant by the thermistor.

[0017]

[Effect of the device]

 As described above, according to the oil supply device of the present invention, the heating / warming means heats and heats the suction means and the discharge means, so that even in use in a cold region, the influence of the temperature drop on these is affected. It can be eliminated and the suction performance of the suction means and the discharge performance of the discharge means are not deteriorated. Therefore, it is possible to prevent the performance of the suction means and the discharge means from deteriorating at low temperatures, prevent the delay until the start of refueling operation at low temperatures, and sufficiently clean the oil vapor detection means. Moreover, if the heater is operated in accordance with the humidity, the air passing near the discharge means will be warmed to a dry state even when it is used under high humidity conditions, and the oil vapor of the oil vapor detection means can be cleaned quickly and quickly. It can be done well.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an oil supply device according to an embodiment of the present invention.

FIG. 2 is a flowchart of a refueling process of a refueling device according to an embodiment of the present invention.

FIG. 3 is a plan view showing a state in which a cover in which a suction means and a discharge means of the oil supply device according to the embodiment of the present invention are housed is not attached.

FIG. 4 is a cross-sectional view taken along line XX in FIG. 3 showing a state in which the cover of the unit accommodating the suction means and the discharge means of the oil supply device according to the embodiment of the present invention is mounted.

FIG. 5 is a view showing a cover of an oil supply device according to an embodiment of the present invention as viewed from the Y direction in FIG.

FIG. 6 is a cross-sectional view taken along line ZZ in FIG. 5, showing a cover of an oil supply device according to an embodiment of the present invention.

FIG. 7 is a block diagram showing a heating and heat retaining means of an oil supply apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 2 pump part (liquid feeding means) 4 pump unit (liquid feeding means) 5 pump motor (liquid feeding means) 10 oil supply nozzle 15 oil vapor sensor (oil vapor detection means) 16 intake pump (suction means) 17 exhaust pump (discharging means) ) 42 heater (heating and heat retaining means) 46 detector (heating and heat retaining means)

Claims (1)

[Scope of utility model registration request] 1. A refueling nozzle, and a liquid feeding means for feeding the oil liquid in an oil liquid storage tank to the refueling nozzle, and sucking oil vapor in a refueling target tank for supplying the oil liquid by the refueling nozzle. And a suction means for detecting the oil vapor sucked by the suction means, and a discharge means for discharging the oil vapor sucked by the suction means and cleaning the oil vapor detection means. The oil supply device according to claim 1, further comprising heating and heat retaining means for heating and retaining the suction means and the discharge means.