JP3013762B2 - Fuel supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for supplying fuel from an external fuel tank to a domestic water heater or heater using oil as fuel.

[0002]

2. Description of the Related Art Heretofore, this kind of fuel supply apparatus is generally as shown in Japanese Utility Model Laid-Open No. 2-54034. Hereinafter, the configuration will be described with reference to FIG. As shown in FIG.
The pump 3 is configured to pump up the fuel through the suction pipe 4 by using the pump 3 that rotates.
When the fuel is discharged from the discharge pipe 5 and the liquid level in the storage tank 1 drops, the float 6 detects the fuel level and operates. A display unit 7 is provided above the storage tank 1.
The display unit 7 displays the operating state of the pump 3 or the liquid level position of the storage tank 1.

[0003]

However, the conventional fuel supply device has only a function of pumping up the fuel by the pump 3 and supplying the fuel from the storage tank 1 to the combustion equipment with a head, so that the amount of fuel supplied to the combustion equipment can be measured. Had the problem of being unable to do so.

[0004] Further, since the supply state cannot be monitored over a long period of time from the measurement of the fuel supply amount, there has also been a problem that it is impossible to grasp or predict a failure during use.

The present invention solves such a conventional problem, and measures the supply amount of fuel pumped to a fuel supply device for a long period of time. The first purpose is to secure

A second object of the present invention is to ensure safety by stopping fuel supply when a pipe connecting the combustion equipment and the fuel supply device is damaged or dropped.

A third object of the present invention is to secure safety by stopping fuel supply when a leak occurs in a pipe connecting the combustion equipment and the fuel supply device.

It is a fourth object of the present invention to stop the fuel supply when the pipe connecting the combustion equipment and the fuel supply device is closed, thereby ensuring safety.

A fifth object is to ensure safety by stopping fuel supply when an abnormality occurs in the combustion equipment.

A sixth object of the present invention is to detect a failure of the pumping means of the fuel supply device and automatically stop the operation to ensure safety.

A seventh object is to ascertain the remaining amount of fuel in the fuel tank and stop the fuel supply before the fuel tank becomes empty to ensure safety.

An eighth object is to measure the supply amount of fuel pumped to the fuel supply device for a long period of time, and to stop the fuel supply when an abnormality occurs, to ensure safety, and to notify by an alarm. is there.

A ninth object is to secure safety by stopping fuel supply when an earthquake occurs.

[0014]

In order to achieve the first object, the present invention provides a pumping means for pumping fuel from a fuel tank to an internal tank, a supply means for discharging fuel,
Measuring means for measuring the fuel supply amount, recording means for storing the value obtained from the measuring means, evaluating means for monitoring the value obtained from the measuring means or the recording means, and stopping the supply means by the judgment of the evaluating means. It comprises a valve control section and display means for displaying a signal from the valve control section or the evaluation means.

Further, in order to achieve the second object of the present invention, the evaluation means is provided with a data receiving section for receiving a signal from the measuring means or the recording means, and an evaluation means which is larger than an initial set value or a value stored for a predetermined period. Sometimes, it is provided with a determination unit that determines that the piping of the combustion equipment has been damaged or dropped and gives an instruction to a valve control unit that stops the supply unit, and a monitor unit that displays the instruction content of the determination unit.

[0016] In order to achieve the third object of the present invention, the evaluation means comprises a data acquisition unit for receiving a signal from the measuring means or the recording means, and a fuel quantity smaller than the minimum fuel consumption of the combustion equipment to be used. When a predetermined time is supplied for a predetermined time or more, a determination unit that determines that fuel has leaked from the piping of the combustion equipment and issues an instruction to a valve control unit that stops the supply unit, and a monitor unit that displays the instruction content of the determination unit. It is provided.

Further, in order to achieve the fourth object of the present invention, the evaluation means is provided with a data receiving section for receiving a signal from the measuring means or the recording means, and an evaluation means which is smaller than an initial set value or a value stored for a predetermined period. Sometimes, it is provided with a judging unit for judging that the piping of the combustion equipment is blocked and giving an instruction to a valve control unit for stopping the supply means, and a monitor unit for displaying the contents of the instruction of the judging unit.

In order to achieve the fifth object of the present invention, the evaluation means includes a data capturing unit for receiving a signal from the measuring means or the recording means, a constant decreasing tendency or an irregular increasing or decreasing in the value of the fuel supply amount. When a state where repetition occurs occurs, a determination unit that determines that a failure has occurred in the combustion equipment and issues an instruction to a valve control unit that stops the supply unit, and a monitor unit that displays the instruction content of the determination unit. Things.

Further, in order to achieve the sixth object of the present invention, the evaluation means comprises: a data capturing section for receiving a signal from the pumping means; and an operation time of the pumping means operating in accordance with the liquid level detecting section of the internal tank. A determination unit that determines that a failure has occurred in the pumping means when the length is longer than the initial state, and issues an instruction to a valve control unit that stops the pumping means and the supply means; and a monitor unit that displays the instruction content of the determination unit. It is provided with.

Further, in order to achieve the seventh object of the present invention, the evaluation means comprises a liquid level detecting section provided in the fuel tank, and a control for stopping the pumping means and the supply means based on the judgment of the liquid level detecting section. And a monitor unit for displaying a signal from the control unit or the liquid level detection unit.

In order to achieve the eighth object of the present invention, a recording means for storing a value obtained from the measuring means, an evaluating means for monitoring the value obtained from the measuring means or the recording means, and a judgment by the evaluating means Thus, a control unit for stopping the pumping unit and the supply unit, and an alarm unit for transmitting a signal from the control unit or the evaluation unit to the outside are provided.

Further, in order to achieve the ninth object of the present invention, there is provided a vibration detecting means for detecting an earthquake vibration.

[0023]

According to the present invention, since the fuel supply amount is observed over a long period of time by using the measuring means and the recording means and the abnormal condition is confirmed by the evaluating means, the pumping means and the supplying means are used. Unnecessary spills can be prevented to ensure safety.

The judging section of the evaluation means judges whether the pipe to the combustion equipment is damaged or dropped, so that it is possible to promptly cope with the occurrence of a failure, to prevent unnecessary fuel loss and to ensure safety.

Further, since the determination unit of the evaluation means determines the fuel leakage from the pipe to the combustion equipment, it is possible to promptly cope with the occurrence of a failure and to prevent unnecessary loss of fuel to ensure safety.

Further, since the judging section of the evaluation means judges the state of the blockage of the pipe to the combustion equipment, it is possible to promptly cope with the occurrence of a failure and prevent the failure of the combustion equipment to ensure safety.

Further, since the abnormality in the operation of the combustion equipment is determined by the determination unit of the evaluation means, it is possible to promptly cope with the occurrence of a failure and to prevent unnecessary loss of fuel to ensure safety.

Further, the abnormality of the pumping means of the fuel supply device is determined by the determination section of the evaluation means, so that the failure can be dealt with promptly, the fuel supply device can be repaired or replaced, and the original function can be secured. is there.

Further, since the fuel capacity in the fuel tank is determined by the determining unit of the evaluation means, it is possible to confirm in advance that the fuel has run out, and to prevent air from entering the piping and running of the fuel pump.

Further, since the contents of the evaluation means are notified by the alarm means, the occurrence of a failure can be promptly dealt with, and the failure of the combustion equipment can be prevented to ensure safety.

Further, since the operation of the fuel supply device is stopped during an earthquake, unnecessary loss of fuel due to damage to the combustion equipment and piping can be prevented and safety can be ensured.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a sectional view of a main part of a first embodiment of the present invention.

In the drawing, reference numeral 8 denotes an internal tank for temporarily storing fuel, into which a discharge pipe 10 of a fuel pumping means 9 is inserted. This pumping means 9
Is composed of a plunger pump whose cylinder moves up and down, a rotary pump that rotates a screw by a motor, and the like. The suction pipe 11 of the pumping means 9 has its end communicating with a fuel tank 12 placed outside. Internal tank 8
Is provided with a liquid level detecting unit 13 for instructing replenishment of fuel. The liquid level detection unit 13 detects a liquid by detecting a vertical movement of the float, detects a change in refractive index due to permeation of the fuel liquid or permeation into the fuel liquid, or detects a weight of the fuel by pressure, or a fuel. And the like, which performs detection based on the electrical conductivity. There is provided a control unit 14 for controlling the energization of the pumping unit 9 on and off based on the detection of the liquid level detection unit 13. These liquid level detectors 13
Measuring means 15 for measuring the amount of fuel supplied by the controller and the controller 14
Is composed. Further, a recording means 16 for integrating the fuel consumption from the value of the measuring means 15 and storing the value is connected. The recording means 16 is composed of an integrator such as a microcomputer chip, a memory or a counter. Further, an evaluation means 17 is provided for constantly observing the value of the recording means 16, grasping a tendency or the like, and making a judgment. This evaluation means 1
Reference numeral 7 denotes a configuration in which a predetermined program such as a chip of a microcomputer, a relay switch, a sequencer, or the like is input digitally or analogly and mechanically or electrically output. A supply means 19 for turning on and off the supply of fuel from the internal tank 8 is provided in the middle of a fuel supply pipe 18 provided on the discharge side of the internal tank 8. This supply means 19
Is constituted by a valve for opening and closing the fuel supply pipe 18.
Further, a valve control unit 20 that stops the supply unit 19 according to the determination of the evaluation unit 17 is provided. These internal tanks 8,
The pumping means 9, the measuring means 15, the recording means 16, the evaluation means 17, and the like are arranged inside the exterior 21. Display means 22 for displaying a value determined by the evaluation means 17 or a signal of the valve control unit 20 is provided above the exterior 21. The display means 22 includes a liquid crystal screen, a photoelectric tube, a cathode ray tube, and the like. Further, the end of the fuel supply pipe 18 is provided with the combustion equipment 2.
3 are connected.

The operation of the above construction will be described. When the operation of the combustion equipment 23 is started, fuel is sent from the internal tank 8 through the fuel supply pipe 18. When the fuel in the internal tank 8 is consumed, the predetermined lower end of the fuel level is detected by the liquid level detecting unit 13, and when the signal is sent to the control unit 14, the pumping means 9 is operated, and the external fuel tank is operated. Fuel is pumped up from the pipe 12 through the suction pipe 11 and supplied to the internal tank 8 from the discharge pipe 10. When the fuel level rises and a predetermined uppermost end is detected by the liquid level detection unit 13 and the signal is sent to the control unit 14, the operation of the pumping means 9 is stopped and the supply of fuel to the internal tank 8 is stopped. Can be At this time, since the control unit 14 has received the ON and OFF signals of the pumping means 9, the signals are read by the recording means 16, the operation time is integrated and recorded, or the liquid level detection unit 1 is used.
The signal of the number of detections of No. 3 is read by the recording means 16, integrated, and recorded. The evaluation unit 17 constantly observes these values within a certain period (for example, on a monthly basis) and compares them with an evaluation pattern already incorporated in the evaluation unit 17 to make a determination. When the evaluation unit 17 determines that an abnormality has occurred, an instruction is given to the valve control unit 20, and the supply unit 19 is stopped to prevent fuel loss. In addition, the display means 22 displays the content of the abnormality and the failure portion. Further, the pumping means 9 is stopped by the control unit 14 together with the stop of the supply means 19 so that the internal tank 8 is not refilled with fuel.

According to the first embodiment of the present invention, the fuel supply amount is measured, and if an abnormality occurs, the fuel supply is stopped. Therefore, unnecessary loss of fuel can be prevented and safety can be ensured.

Since the supply state is monitored over a long period of time from the measurement of the fuel supply amount, it is possible to grasp or predict the failure of the in-use combustion equipment 23 and the life of the fuel supply device body.

Since the display 22 displays the contents of the abnormality, the fuel supplier and the user can quickly take countermeasures.

Further, since the assembled state of the fuel supply pipe 18 and the combustion equipment 23 on the pipe can be confirmed at the time of start-up, it is possible to easily find an initial failure.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a sectional view of a main part of a fuel supply device according to a second embodiment of the present invention. The difference between the second embodiment and the first embodiment is that the evaluation means 17 includes a data acquisition unit 24 which receives a signal from the measurement means 15 or the recording means 16.
When the value of the data capturing unit 24 abnormally increases from the value of the initial fuel consumption of the combustion device 23 or the value of the fuel supply amount stored for a predetermined period, the fuel supply pipe 18 or the combustion device A determination unit 25 that determines that the pipe 23 is damaged or has fallen off and issues an instruction to a valve control unit 20 that stops the pumping unit 9 or the supply unit 19; and a determination unit 25.
Of the monitor unit 26 for displaying the contents of the instruction.

According to the second embodiment of the present invention, it is determined whether the fuel supply pipe 18 or the piping of the combustion equipment 23 has been damaged or dropped, so that the occurrence of a failure can be promptly dealt with and unnecessary fuel loss can be prevented. Safety can be ensured.

Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 2 is a sectional view of a main part of a fuel supply device according to a third embodiment of the present invention. The difference between the third embodiment and the first embodiment is that the evaluation unit 17 includes a data acquisition unit 24 that receives a signal from the measurement unit 15 or the recording unit 16.
When the value of the data capturing unit 24 is smaller than the minimum fuel consumption of the combustion equipment 23 to be used, and the fuel is supplied for a predetermined time or more during the operation stoppage of the combustion equipment 23, A determination unit 25 that determines that fuel has leaked from the piping of the fuel pump 18 or the combustion equipment 23 and instructs the valve control unit 20 to stop the pumping unit 9 or the supply unit 19.
And a monitor unit 26 for displaying the instruction content of the determination unit 25.

According to the third embodiment of the present invention, fuel leakage from the fuel supply pipe 18 or the pipe of the combustion equipment 23 is determined, so that a failure can be promptly dealt with and unnecessary fuel loss can be prevented. Safety can be ensured.

Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 2 is a sectional view of a main part of a fuel supply device according to a fourth embodiment of the present invention. The difference between the fourth embodiment and the first embodiment is that the evaluation unit 17 includes a data acquisition unit 24 that receives a signal from the measurement unit 15 or the recording unit 16.
When the value of the data capturing unit 24 gradually decreases from the initial set value or the value stored for a predetermined period or abnormally decreases in a short time, the fuel supply pipe 18 and the pipe of the combustion device 23 It is determined that the blockage has occurred, and the pumping means 9
Alternatively, a determination unit 25 for giving an instruction to the valve control unit 20 for stopping the supply unit 19 and a monitor unit 26 for displaying the content of the instruction from the determination unit 25 are provided.

According to the fourth embodiment of the present invention, the state of blockage of the fuel supply pipe 18 and the piping of the combustion equipment 23 is determined, so that the occurrence of a failure is promptly dealt with and the failure of the combustion equipment 23 is prevented. Safety can be ensured.

Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 2 is a sectional view of a main part of a fuel supply device according to a fifth embodiment of the present invention. The difference between the fifth embodiment and the first embodiment is that the evaluation unit 17 includes a data acquisition unit 24 that receives a signal from the measurement unit 15 or the recording unit 16.
When the value of the data capturing unit 24 repeatedly changes irregularly, or when the fuel supply is not performed even though the instruction to operate the combustion equipment 23 is issued, the combustion equipment 23 Judging that a failure has occurred,
The determination unit 25 instructs the valve control unit 20 that stops the pumping unit 9 or the supply unit 19, and the monitor unit 26 that displays the instruction content of the determination unit 25.

According to the fifth embodiment of the present invention, the abnormality in the operation of the combustion equipment 23 is determined, so that the failure can be dealt with promptly, the unnecessary loss of fuel can be prevented and the safety can be ensured. Can be.

Next, a sixth embodiment of the present invention will be described with reference to FIG. FIG. 2 is a sectional view of a main part of a fuel supply device according to a sixth embodiment of the present invention. The difference between the sixth embodiment and the first embodiment is that the evaluation means 17 is different from the pumping means 9.
The operation time of the pumping means 9 operating in accordance with the liquid level detection unit 13 in the internal tank 8 is longer than the initial state in the data capturing unit 24 receiving the signal Sometimes pumping means 9
A determination unit 25 that determines that a failure has occurred and issues an instruction to the valve control unit 20 that stops the pumping unit 9 or the supply unit 19, and a monitor unit 26 that displays the instruction content of the determination unit 25. It is in.

According to the sixth embodiment of the present invention, since the abnormality of the pumping means 9 is determined, it is possible to promptly deal with the occurrence of the failure, repair or replace the fuel supply device, and secure the original function. Can be.

Next, a seventh embodiment of the present invention will be described with reference to FIG. FIG. 3 is a sectional view of a main part of a fuel supply device according to a seventh embodiment of the present invention. The difference of the seventh embodiment from the first embodiment is that the evaluation means 17
A liquid level detecting unit 27 provided therein, a control unit 28 for stopping the pumping means 9 and the supplying means 19 based on the determination of the liquid level detecting unit 27, and a monitor for displaying a signal of the control unit 28 or the liquid level detecting unit 27. That is, the unit 29 is configured.

According to the seventh embodiment of the present invention, since the fuel capacity in the fuel tank 12 is determined, it is confirmed in advance that the fuel has run out, and air mixing in the fuel supply pipe 18 and the piping of the combustion equipment 23 is prevented. It is possible to prevent the fuel pump from idling.

Next, an eighth embodiment of the present invention will be described with reference to FIG. FIG. 4 is a sectional view of a main part of a fuel supply device according to an eighth embodiment of the present invention. The eighth embodiment is different from the first embodiment in that a recording unit 16 for storing a value obtained from the measuring unit 15 and an evaluation unit 17 for monitoring a value obtained from the measuring unit 15 or the recording unit 16 are provided. A control unit 30 for stopping the pumping unit 9 and the supply unit 19 based on the judgment of the evaluation unit 17; an alarm unit 31 for transmitting a signal from the control unit 30 or the evaluation unit 17 to the outside;
Is that a sound is generated by a buzzer, a sound, a lamp is lit, or the like.

According to the eighth embodiment of the present invention, the contents of the evaluation means 17 are notified, so that the occurrence of a failure can be promptly dealt with.
Failures of the fuel supply pipe 18 and the combustion equipment 23 can be prevented to ensure safety.

Next, a ninth embodiment of the present invention will be described with reference to FIG. FIG. 5 is a sectional view of a main part of a fuel supply device according to a ninth embodiment of the present invention. The difference of the ninth embodiment from the first embodiment is that the vibration detecting means 32 for detecting the vibration of the earthquake and the control for stopping the pumping means 9 and the supply means 19 in response to the signal of the vibration detecting means 32 That is, a monitor 33 for displaying a signal of the controller 33 or the vibration detecting means 32 is provided.

According to the ninth embodiment of the present invention, the fuel supply is stopped in the event of an earthquake, so that unnecessary fuel loss due to damage to the fuel supply pipe 18 and the piping of the combustion equipment 23 is prevented to ensure safety. be able to.

[0055]

As is apparent from the above description, the following effects can be obtained according to the fuel supply system of the present invention.

The fuel supply amount is measured, and if an abnormality occurs, the fuel supply is stopped. Therefore, there is an effect that unnecessary loss of fuel can be prevented and safety can be ensured.

Further, since it is determined whether the fuel supply pipe or the pipe of the combustion equipment is damaged or dropped, it is possible to promptly cope with the occurrence of a failure and to prevent unnecessary loss of fuel to ensure safety.

Further, since the fuel leakage from the fuel supply pipe or the pipe of the combustion equipment is determined, it is possible to promptly cope with the occurrence of a failure and to prevent unnecessary loss of fuel to ensure safety.

Further, since the clogging state of the fuel supply pipe and the pipe of the combustion equipment is determined, it is possible to quickly cope with the occurrence of the failure and to prevent the failure of the combustion equipment 23 to ensure safety.

Further, since the abnormality in the operation of the combustion equipment is determined, it is possible to promptly cope with the occurrence of the failure, to prevent unnecessary fuel loss and to ensure safety.

Since the abnormality of the pumping means is determined,
The failure can be dealt with promptly, the fuel supply device can be repaired or replaced, and the original function can be secured.

Further, since the fuel capacity in the fuel tank is determined, it is possible to confirm in advance that the fuel has run out, and to prevent air from entering the fuel supply pipe and the piping of the combustion equipment and to prevent the fuel pump from being idle.

Further, since the contents of the evaluation means are notified, it is possible to promptly deal with the occurrence of a failure and to prevent the failure of the fuel supply pipe and the combustion equipment to ensure safety.

Also, the fuel supply is stopped during an earthquake,
Unnecessary loss of fuel due to damage to the fuel supply pipe and the piping of the combustion equipment can be prevented to ensure safety.

Since the supply state is monitored over a long period of time, it is possible to grasp or predict the failure of the combustion equipment in use and the life of the fuel supply device main body.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a fuel supply device according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a main part of a fuel supply device according to second to sixth embodiments of the present invention.

FIG. 3 is a sectional view of a main part of a fuel supply device according to a seventh embodiment of the present invention.

FIG. 4 is a sectional view of a main part of a fuel supply device according to an eighth embodiment of the present invention.

FIG. 5 is a sectional view of a main part of a fuel supply device according to a ninth embodiment of the present invention.

FIG. 6 is a sectional view of a conventional fuel supply device.

[Explanation of symbols]

 Reference Signs List 8 internal tank 9 pumping means 12 fuel tank 15 measuring means 16 recording means 17 evaluation means 19 supply means 20 valve control unit 22 display means

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-332599 (JP, A) JP-A-7-305841 (JP, A) JP-A-64-41717 (JP, A) JP-A-1- 308574 (JP, A) JP-A-7-119960 (JP, A) JP-A-6-40640 (JP, U) JP-A 7-5000 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F23N 5/24 101 F23N 5/24 111 F23N 5/26 101 F23N 5/04

Claims (9)

(57) [Claims] 1. Pumping means for pumping fuel from an externally provided fuel tank to an internal tank, measuring means for measuring a fuel supply amount pumped by the fuel pumping means,
Recording means for integrating and storing the values obtained from the measuring means, evaluation means for monitoring the values obtained from the recording means, supply means for discharging fuel from the internal tank, and judgment by the evaluation means A fuel supply device comprising: a valve control unit for stopping the supply unit; and a display unit for displaying a signal from the valve control unit or the evaluation unit. 2. An evaluation means comprising: a data capturing section which constantly receives a signal from the measuring means or the recording means; and a value of the data capturing section being based on an estimated fuel consumption of the combustion equipment or the value stored for a predetermined period. When the number of pipes of the combustion equipment also increases, a determination unit that determines that the piping of the combustion device has been damaged or has dropped, and issues an instruction to a valve control unit that stops the supply unit, and a monitor unit that displays the instruction content of the determination unit. The fuel supply device according to claim 1. 3. The evaluation means includes: a data capturing section which constantly receives a signal from the measuring means or the recording means; and a value of the data capturing section, which is smaller than the minimum fuel consumption of the combustion equipment during the stop of the combustion equipment. A determination unit that determines that fuel has leaked from the piping of the combustion equipment when supplying the fuel for a predetermined time or more, and issues an instruction to a valve control unit that stops the supply unit; and a monitor unit that displays the instruction content of the determination unit. The fuel supply device according to claim 1, wherein the fuel supply device comprises: 4. An evaluation means, comprising: a data capturing section which constantly receives a signal from the measuring means or the recording means; and a value of the data capturing section gradually decreasing from an initial set value or the signal value stored for a predetermined period. 2. The system according to claim 1, further comprising: a determination unit that determines that the piping of the combustion equipment is blocked and issues an instruction to a valve control unit that stops the supply unit, and a monitor unit that displays the instruction content of the determination unit. The fuel supply device as described in the above. 5. An evaluation means comprising: a data capturing section which constantly receives a signal from a measuring means or a recording means; and a state in which the value of the data capturing section repeats an irregular increase or decrease or the value during the operation of the combustion equipment. When a failure does not occur, it is determined that a failure has occurred in the combustion equipment, and a determination unit that gives an instruction to a valve control unit that stops the supply unit in advance, and a monitor unit that displays the instruction content of the determination unit. Claim 1
The fuel supply device as described in the above. 6. An evaluator includes: a data capturing unit that constantly receives a signal indicating an operation time of the pumping unit that operates in accordance with a liquid level detecting unit that detects a predetermined volume in an internal tank; A determination unit that determines that a failure has occurred in the pumping means and instructs a valve control unit to stop the pumping means and the supply means in advance when the length of the pumping means has exceeded a predetermined amount compared to the initial state, 2. The fuel supply device according to claim 1, further comprising a monitor for displaying the content of the instruction from the determination unit. 7. An evaluation means includes: a liquid level detection unit provided in a fuel tank having a predetermined capacity; a control unit for stopping the pumping means and the supply means based on the determination by the liquid level detection unit; The fuel supply device according to claim 1, further comprising a control unit or a monitor unit that displays a signal from the liquid level detection unit. 8. The fuel supply device according to claim 1, further comprising alarm means for transmitting a signal from the evaluation means to the outside. 9. The fuel supply device according to claim 1, further comprising a vibration detecting means for detecting an earthquake vibration.