JPH0821620A - Liquid fuel feeding device - Google Patents

Abstract

PURPOSE:To prevent a generation of a driving sound at an operation, by composing a liquid fuel supplying device by a piezoelectric element making a capacity of a pump room change and check valves respectively set at a suction entrance to the pump room and an exhaust opening from the pump room. CONSTITUTION:After a fuel oil is stored in an oil quantity regulating device body, by a voltage and frequency control from a controlling device, and through connection lines 33a, 34a from terminals 37a, 37b, if a controlling of an electricity passage to an piezoelectric element 34 of a pump arranged at a cover 21 of a body upper section is executed, in a case wherein the piezoelectric element 34 executes a shrinkage, an oscillating plate 33 bends to upward, in a case wherein the piezoelectric element 34 extends, the oscillating plate 33 bends to downward. By a bending of this oscillating plate 33, a capacity of a recess section of a body 28 changes, through an umbrella valve 30 which opens when the capacity extends, a fuel oil in an oil room executes an inflow through a suction hole 24, through an umbrella valve 31 which opens when the capacity executes a shrinkage, the fuel in the recess section is fed to a burner through an exhaust hole 25 and the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid fuel supply device used in a heating appliance or the like, and more particularly, a pump for supplying liquid fuel in an oil amount regulator to a burner emits a driving noise. The present invention relates to a liquid fuel supply device that operates without any operation.

[0002]

2. Description of the Related Art As a conventional general liquid fuel supply device, the one disclosed in Japanese Utility Model Publication No. 62-1562 filed by the present applicant can be mentioned. Therefore, a conventional liquid fuel supply device disclosed in the publication will be described with reference to the drawings. Therefore, FIG. 7 is a diagram showing a plane of the conventional liquid fuel supply apparatus, and FIG.
FIG. 9 is a view showing a cross section A, FIG. 9 is a cross section taken along line BB in FIG. 7, and FIG. 10 is a view showing a cross section taken along line CC of FIG. The liquid fuel supply device is roughly classified into an oil amount controller 5
0, an electromagnetic pump 60, and a valve mechanism 70. As shown in FIG. 7, these are configured by externally attaching the electromagnetic pump 60 and the valve mechanism 70 to the oil amount regulator.

Therefore, first, as shown in FIG. 8, the oil amount regulator 50 supplies a liquid fuel to a main body 51 of a mold such as a bath container formed by a size of 10 cm square, and the main body 51. An inflow pipe 52 is formed on the bottom surface. A float 53, which plays a role of floating, is disposed inside the main body 51 via a float arm 56 that rotates about a support shaft 57 as a fulcrum. Further, the inflow pipe 52
The valve body 55 of the inlet valve 54 for adjusting the supply of the liquid fuel supplied from the inside to the main body 51 is sandwiched by the support shaft 57 and the float 5
3 and the float arm 56 are connected to each other in a pair. Next, the electromagnetic pump 60 and the valve mechanism 70 are for supplying the liquid fuel supplied to the main body 51 of the oil amount regulator 50 to a burner (not shown), and as shown in FIG. Is configured.

Therefore, as shown in FIG. 9, the electromagnetic pump 60 has a suction port 61 provided in the lower portion thereof communicated with the main body 51 of the oil amount regulator via a communication passage 62. Since the open end of the communication passage 62 is designed at a position lower than the oil level OL in the oil amount adjuster body 51, the lower intake port 61 of the electromagnetic pump 60 is always immersed in the fuel oil. . In this electromagnetic pump 60, iron pipes 65a and 65b are vertically arranged around a plunger 64 which is biased by springs 63a and 63b from above and below, and a coil 66 is wound around the iron pipes 65a and 65b. By the way, in this plunger 64, the flow path hole 64a is formed along the central axis,
At its lower end, the spherical valve body 64b is biased from above by a spring 64c having a small biasing force, and the valve hole 64d is closed. At the upper part of the electromagnetic pump 60, a valve body 67a is provided at the upper end of the pore 69 and a spring 6 having a small biasing force from above.
It is biased by 7b and is in contact with the valve seat 67c.
Then, it is communicated with the valve mechanism 70 via the communication pipe 68.

Further, as shown in FIG. 10, the valve mechanism 70 is connected from the oil amount regulator main body 51 to the valve chamber 71 through a flow rate regulating hole 72, an air vent pipe 73 and a pilot fuel supply passage 74. . Further, the valve chamber 71 has the outflow port 75.
To a burner (not shown) via a supply pipe 76. In the valve chamber 71, a valve body 77 is fixedly attached to the lower end of a valve plug 78 so as to close a valve hole 80 communicating with the pilot fuel supply passage 74. On the other hand, although not shown, the valve plug 78 is provided. The upper end of is inserted in a state of protruding from the upper end of the opened insertion chamber 79.

The liquid fuel supply device having such a structure operates as follows. Here, the flow of the fuel oil is supplied to the burner via the oil amount regulator 50, the electromagnetic pump 60 and the valve mechanism 70 during normal operation, and therefore will be described below with reference to FIGS. 8 to 9. First, when the fuel oil is supplied from the inflow pipe 52 into the oil amount adjuster main body 51 through the inlet valve 54, the fuel oil is accumulated in the oil amount adjuster main body 51 and its liquid level rises, and Float 53 as the oil level rises
Rises. Then, the float arm 56 to which the float 53 is attached rotates about the support shaft 57, and the valve body 55 connected to the float arm 56 descends in the opposite direction to the float 53 and the inlet valve 54. Will be blocked. Therefore,
The oil level of the fuel oil in the oil amount controller body 51 is at the oil level O.
When L is satisfied, the supply of fuel oil is limited and the fuel oil becomes stable at that level.

When the fuel oil is filled up to the oil level OL in the oil amount adjuster main body 51 and the lower portion of the electromagnetic pump 60 is filled with the fuel oil through the communication passage 62, the electromagnetic pump 60 causes the fuel oil to fill. Is pumped up and supplied to the burner. At this time, the open end (not shown) of the communication passage 62 in the oil amount adjuster body 51 is designed at a position lower than the oil level OL in the oil amount adjuster body 51, so that the electromagnetic pump 60 lower intake port 61 is always immersed in fuel oil.

Therefore, when a current is applied to the coil 66,
In the direction in which the plunger 64 is pulled downward, the iron pipes 65a, 6a
A magnetic field is generated in 5b, the plunger 64 moves downward against the biasing force of the spring 63b, and the lower part thereof is immersed in the fuel oil. At this time, the fuel oil with which the lower suction port 61 of the electromagnetic pump 60 is filled is supplied with a predetermined pressure from the oil amount regulator main body 51 side.
The spherical valve element 64b is lifted up against the biasing force of the spring 64c by the pressure of the fuel oil flowing into the flow path hole 64a when the pressure is absorbed. Then, the fuel oil flows into the flow path hole 64a, and the amount of fuel oil above the plunger 64 increases. After that, when a reverse current is applied to the coil 66, the plunger 64 is pulled upward and moves upward against the biasing force of the spring 63a. At this time, since the valve hole 64d is closed by the spherical valve body 64b, the fuel oil is pushed up by the plunger 64 and the fine hole 69d.
Then, the valve body 67a is further lifted and discharged to the communication pipe 68.

Then, the fuel oil supplied to the insertion chamber 79 flows down to the valve chamber 71. At this time, since the valve hole 80 to the pilot fuel supply path 74 communicating with the valve chamber 71 is closed by the valve body 77, the fuel oil to the valve chamber 71 flows out to the outflow port 75.
Flow to the side and from there it is supplied to the burner via the supply pipe 76.

On the other hand, when the electromagnetic pump 60 stops due to a power failure or the like, the valve body 77 of the valve mechanism 70 causes the pilot fuel supply passage 74 to move.
The hydraulic pressure of the fuel oil from rises to open the valve. Then, a certain amount of fuel oil regulated by the flow rate regulating hole 72 from the oil amount regulator 50 is passed through the pilot fuel supply path 74 and the valve hole 80.
To the valve chamber 71, flows from there to the outlet port 75 side, and is supplied to the burner via the supply pipe 76.

[0011]

By the way, the conventional liquid fuel supply device having such a structure has a problem that noise generated during operation becomes noise. That is, in cold regions, it is necessary to continuously use the heater to which the liquid fuel supply device is attached throughout the night, and minute combustion is performed even after all of the people have been asleep at midnight. At this time, combustion noise, wind noise from the blower fan, and vibration noise are generated by the operation of the heater, but especially the driving noise of the electromagnetic pump that drives when fuel oil is supplied is heard by the sleeping person. It was easy to attach and gave unpleasant feelings. For example, in the conventional electromagnetic pump as described above, the plunger 64
When pumping up the fuel oil by the vertical movement of the fuel oil, driving noise such as the sliding noise of the plunger and the noise of the fuel oil flowing vigorously in the pump is generated, and is further generated by the plunger driving performed 4 to 5 times per second. A sound of ~ 4 KHz is amplified by the attachment of a device or the like and gives an unpleasant feeling. Further, in the conventional liquid fuel supply device, an electromagnetic pump is externally attached, which also causes the sound to particularly disturb the sleep even in the absence of other sounds at midnight. On the other hand, in the conventional liquid fuel supply device, since the pump is externally attached, the mounting space is required,
There was also a problem that the device became large.

Therefore, in view of such problems, the present invention provides
An object of the present invention is to provide a liquid fuel supply device that prevents drive noise generated during operation. Another object of the present invention is to provide a compact liquid fuel supply device that saves space.

[0013]

A liquid fuel supply apparatus of the present invention is a liquid fuel supply apparatus for supplying a liquid fuel in an oil quantity controller to a burner by using a pump, wherein the pump is provided in the pump chamber. A piezoelectric element for changing the volume, a suction port for sucking the liquid fuel from the oil amount regulator into the pump chamber, and a check valve provided for a discharge port for discharging the liquid fuel from the pump chamber to the burner. And have. Further, in the liquid fuel supply apparatus of the present invention, it is desirable that the pump be arranged in a container that constitutes the oil amount regulator. Further, in the liquid fuel supply apparatus of the present invention, it is preferable that the check valve is an umbrella valve provided at an intake port and a discharge port formed at a bottom portion of a bottomed short tubular body member.

[0014]

The liquid fuel supply device of the present invention supplies the liquid fuel accumulated in the oil amount regulator to the burner by a pump. According to the present invention, the mechanical strain of the piezoelectric element causes When the volume of the pump chamber is changed and the volume is increased, the check valve provided at the intake port is opened with the check valve provided at the discharge port closed, and the liquid fuel is fed from the oil regulator. Was pumped into the pump chamber, and conversely, when the volume was reduced, the check valve provided at the discharge port was opened with the check valve at the inlet closed, and then pumped into the pump chamber. Liquid fuel is discharged to the burner. Therefore,
Since the liquid fuel is pumped up by using the piezoelectric element in this way, the number of driving parts is smaller than that of the conventional electromagnetic pump, the driving sound is extremely quiet, and the operation with a very high noise prevention effect is performed. Further, in the liquid fuel supply device of the present invention, the pump formed in the oil amount adjuster changes the volume of the pump chamber by mechanical strain of the piezoelectric element to pump up the liquid fuel in the oil amount adjuster, The liquid fuel is discharged to the burner. Therefore, the pump is formed inside the oil quantity controller and driven, and thus the operation of which the noise prevention effect is greatly enhanced is performed.

Further, in the liquid fuel supply apparatus of the present invention, when the pump pumps up the liquid fuel in the oil quantity regulator, the piezoelectric element is distorted to increase the volume in the body. The umbrella valve provided at the formed intake port opens due to fluid pressure, and liquid fuel is pumped into the body through the communication hole of the joint member, but the umbrella valve provided at the discharge port remains closed, so When the volume is stored and then the piezoelectric element is distorted and the volume inside the body is reduced, the umbrella valve attached to the discharge port formed at the bottom of the body opens and liquid fuel is discharged and supplied to the burner. To be done. Therefore, since the liquid fuel is pumped up by using the piezoelectric element as well, the operation of which the noise prevention effect is greatly enhanced is performed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the liquid fuel supply apparatus according to the present invention will be described in detail with reference to the drawings. Here, FIG. 1 is a plan view of the liquid fuel supply apparatus according to the present embodiment,
2 is a view showing an AA cross section of FIG. 1, FIG. 3 is a view showing a BB cross section of FIG. 1, and FIG. 4 is a view showing a CC cross section of FIG. By the way, in the liquid fuel supply apparatus of the present embodiment, only the oil amount regulator and the pump will be described, and the valve mechanism mentioned in the conventional example will not be shown and the description thereof will be omitted.

First, the structure of the oil amount regulator main body (hereinafter referred to as "main body") 1 will be described with reference to FIG.
The main body 1 of the present embodiment is also formed by providing the pump 20 on the upper surface of the oil amount regulator main body 1 in which the oil chamber 2 of a type such as a bath container of 10 cm square is formed. A supply pipe 3 for supplying oil to the oil chamber 2 is formed on the bottom surface of the main body 1. The supply pipe 3 is provided in the longitudinal direction, an inflow port 4 is formed on one end side surface thereof, and a supply port 5 penetrating into the main body 1 is formed on the other end side of the supply pipe 3. By the way, a strainer 6 is fitted in the supply pipe 3 for removing foreign matters contained therein when the oil is supplied. The strainer 6 is provided with a take-out lid 7 on the supply pipe 3 so that the strainer 6 can be taken out at any time. Also,
An inlet valve 8 is formed at the supply port 5. The inlet valve 8 has a tubular shape, and a valve hole 8b having a smaller diameter is formed at a lower end portion of the inlet valve 8 so as to limit an inflow amount, and the inlet valve 8 is provided so as to abut against the valve seat 8a. The rubber valve body 8d is formed at the tip of the stem 9.

On the other hand, inside the main body 1, a float 10 formed of plastic, foamed NBR or the like and serving as a float is supported by a float arm 11. The float arm 11 is formed of a magnetic material, and a stepped portion is formed on the upper surface of the float arm 11 to form an abutting surface 11a that abuts the attracting iron pieces 14, 14 held by the holder 12 with the magnet 13 interposed therebetween. . On the other hand, a leaf spring 15 is fixedly provided on the lower surface side of the float arm 11. The leaf spring 15 is fixed at a stepped portion of the float arm 11, and is curved upward, and a shaft hole 15a is located in a wide diameter hole 11b portion formed in a side plate of the float arm 11. Further, a shaft holder 16 supported by the same pin through the shaft hole 15a and the wide-diameter hole 11b is fixed to the main body 1 by a screw at an upper portion. Then, the large-diameter hole 11b,
The shaft hole 15a and a pin (not shown) communicating with the shaft hole (not shown) of the shaft holder 16 form a center, and the float arm 11 has a stem 9 through which a lock nut pin 17 is provided vertically. Supported.

Next, the structure of the pump 20 provided on the upper surface of the main body 1 will be described. Here, FIG. 5 is an enlarged cross-sectional view of the pump 20, and FIG. 6 is an exploded perspective view of members constituting the pump 20, which will be described with reference to FIG. First, the pump 20 is configured such that an in-out joint 22 is supported on the upper surface of the main body 1 and below a cover 21 that covers the upper surface of the main body. The in-out joint 22 has a groove portion 23 having a predetermined width so as to cross the center of the disc portion 23 on the upper surface.
a is formed, and further, a large and small mushroom-shaped suction side recess 23b and discharge side recess 23c are formed in the groove 23a. The suction side recess 23b and the discharge side recess 23c are respectively formed with a suction port 23d and a discharge port 23e, and a suction hole 24 and a discharge hole 25 are connected to them. On the other hand, the in-out joint 22 has a disc portion 23.
The cover 21 is screw-fastened to the lower surface of the cover 21 by screw-fastened portions 26 formed in four directions on the circumference of the.

Into the groove portion 23a of the in-out joint 22, a packing 27 having the same holes as the suction side concave portion 23b and the discharge side concave portion 23c is fitted. A body 28 is arranged on the packing 27. by the way,
Each member described after the body 28 is arranged in the convex portion 21 a of the cover 21. The body 28 is in the shape of a short cylinder with a bottom, and a mushroom-shaped recess 29 is formed in the center of the bottom surface. Umbrella valves 30 and 31 are fitted into the recess 29. Then, in the recess 29 into which the umbrella valves 30, 31 are fitted, a thin communication hole 32 is formed so as to penetrate along the circumference of the umbrella portion of the umbrella valves 30, 31. Further, the bottom surface of the body 28 is provided with a mortar-like slope toward the center.

By the way, the umbrella valves 30, 31
Are mounted upside down. That is, the umbrella valve 30 is fitted in the widened portion of the recess 29 with the umbrella facing upward, and the umbrella valve 31 is fitted in the other part with the umbrella facing the bottom surface of the body 28. On the other hand, on the inner bottom surface of the body 28, a piezoelectric element 34 is fixed to an oscillating plate 33 having an insulating treatment on the concave portion 29 side by an adhesive and fitted.
That is, the vibration plate 33 has the same diameter as the bottom surface of the body 28, the piezoelectric element 34 having a small diameter is fixed to the top surface thereof, and the bottom surface side is insulated by an insulating film or the like. Therefore, by this, the recess 29 of the body 28 is sealed and forms a part of the flow path of the fuel oil, and the suction hole 24 → the suction side recess 23b → the umbrella valve 30 → the recess 2 of the body 28
9-> umbrella valve 31-> discharge side recess 23c-> discharge hole 25
A flow path of one through hole to is formed.

Further, an O-ring 35 is arranged above the vibration plate 33 along the outer periphery thereof, and a pressing ring 36 is fitted from above to press the vibration plate 33 through the O-ring 35. Has been done. Connection lines 33a and 34a are connected to the vibration plate 33 and the piezoelectric element 34, respectively, and further,
The other ends of the connection lines 33a and 34a are connected to terminals 37a and 37b fixed to the central convex portion of the pressing ring 36. Then, press the pushing ring 3 so that the terminals 37a and 37b are passed through.
A terminal cover 38 is arranged on the upper part 6. By the way, in order to supply the fuel oil pumped up by the pump 20 to the burner, the discharge hole 25 is inserted into the burner supply hole 39 as shown in FIG. 4, and the burner supply hole 39 is connected to a burner (not shown). There is.

The liquid fuel supply system of this embodiment having the above-mentioned structure supplies the fuel oil as follows. First, the oil flowing from the inflow port 4 into the supply pipe 3 is transferred to the strainer 6
The impurities are removed by, and the impurities flow into the oil chamber 2 through the inlet valve 8 to store a predetermined amount of oil. That is, when the oil level of the oil stored in the oil chamber 2 does not reach the steady oil level,
The float 10 also descends as the oil level descends. Therefore, as the float arm 11 rotates in the clockwise direction, the stem 9 rises, and accordingly, the valve body 8 of the inlet valve 8 increases.
d rises, the valve hole 8b is opened, and the oil flows into the oil chamber 2.

On the other hand, when the oil level rises due to an increase in the oil in the oil chamber 2, the float 10 also rises as the oil level rises. Further, even if the strainer 6 is provided, impurities may be trapped in the valve hole 8b due to long-term use or the like, and the valve hole may not be completely closed only by the buoyancy of the float, causing an abnormal rise in the oil level. Occurs. However, when the oil level exceeds the steady oil level in this way, the adsorption iron piece 1
Since the float arm 11 is close to the magnets 4 and 14, the contact surface 11a of the float arm 11 is attracted to the attracting iron pieces 14 and 14 by the magnetic force of the magnet 13, and the float 10 is forcibly lifted. At this time, the front arm 11 rotates counterclockwise, the stem 8c descends, the valve body 8d contacts the valve seat 8a, and the valve hole 8b is forcibly closed. At this time, the float 10 is closed. The reaction force of the leaf spring 15 having a larger force than the buoyancy of the above is applied to the valve body 8d. Therefore, the inflow of oil into the oil chamber 2 is restricted and the position of the oil surface does not exceed the oil level.

When the fuel oil is stored in the oil amount regulator main body 1 in this way, the fuel oil is pumped up by the drive of the pump 20 and supplied to the burner. Specifically, the voltage is applied to the piezoelectric element 34 from the terminals 37a and 37b through the connection lines 33a and 34a by voltage and frequency control from a control device (not shown). For example, when a positive voltage is applied, the piezoelectric element 34 is distorted, but at this time, the piezoelectric element 34 contracts, so that the vibrating plate 33 is fixed.
Bends upward due to the force. On the contrary, when a negative voltage is applied, the vibrating plate that is fixed due to the expansion of the piezoelectric element 34 bends downward. Therefore, when the diaphragm 33 bends upward, the volume inside the recess 28 of the body 28 covered by the diaphragm 33 increases, and when curved downward, the volume decreases.

Therefore, when the vibrating plate 33 bends upward, the volume of the concave portion 29 of the body 28 increases, and the umbrella valve 30 (umbrella valve 31 that opens there due to fluid pressure).
Fuel oil flows in from the oil chamber 2 of the oil amount regulator body 1 via Next, when the vibration plate 33 is curved downward continuously, the fuel oil is pushed when the volume inside the concave portion 29 of the body 28 is reduced, and the umbrella valve 31 opened by the fluid pressure (the umbrella valve 30 remains closed). Is discharged from the discharge hole 25 to the burner through the burner supply hole 39. Therefore, by continuously distorting the diaphragm 33, the fuel oil is pumped up from the oil amount regulator main body 1 and supplied to the burner.

As described above, according to the liquid fuel supply system of the present embodiment, the pump 20 pumps the fuel oil by using the piezoelectric element 34 as a driving source, so that its driving member is small and its momentum is small. The generated drive noise could be made extremely low. Further, in the prior art, the pump is externally attached, but in the present embodiment, the pump 20 is arranged in the oil amount regulator main body 1, so that the sound leakage is eliminated and the driving sound generated at the time of operation is eliminated. I was able to hold it down. And this also realized downsizing of the device.
Further, since the pump 20 is provided inside the oil amount regulator main body 1,
Since the fuel oil passage inside the pump exists inside the main body, even if liquid leakage occurs, there is no concern that the fuel oil will flow out of the main body, and safety is improved. Further, since the pump is configured by the piezoelectric element, it is possible to downsize the pump and further downsize the liquid fuel supply device itself.
With such a simple configuration, it is possible to reduce the production cost.

The liquid fuel supply apparatus of the present invention is not limited to that of the above embodiment, and various modifications can be made without departing from the spirit of the invention. For example, in the above embodiment, the pump is provided above the oil amount adjuster, but it may be provided on the side surface of the oil amount adjuster. Also,
For example, although the umbrella valve is used as the check valve in the embodiment, the shape of the check valve is not limited as long as it is a check valve.

[0029]

As described above, the liquid fuel supply apparatus of the present invention has the piezoelectric element for changing the volume of the pump chamber, the suction port for sucking the liquid fuel from the oil amount regulator into the pump chamber, and the burner from the pump chamber. Since it was a pump with check valves provided at the discharge ports for discharging the liquid fuel of
It has become possible to provide a liquid fuel supply device that prevents drive noise generated during operation. In addition, it is possible to provide a small-sized liquid fuel supply device that does not occupy a space because of the fact that the pump is formed in the container that constitutes the oil amount regulator.

[Brief description of drawings]

FIG. 1 is a plan view showing a liquid fuel supply device according to an embodiment of the present invention.

FIG. 2 is a view showing a cross section taken along the line AA of FIG.

3 is a diagram showing a BB cross section of FIG. 1. FIG.

FIG. 4 is a view showing a cross section taken along the line CC of FIG.

FIG. 5 is an enlarged sectional view showing a pump of the liquid fuel supply device according to the embodiment of the present invention.

FIG. 6 is an exploded perspective view showing a pump of the liquid fuel supply apparatus according to the embodiment of the present invention.

FIG. 7 is a plan view showing a conventional liquid fuel supply device.

8 is a diagram showing a cross section taken along the line AA of FIG. 7. FIG.

9 is a diagram showing a cross section taken along the line BB of FIG. 7. FIG.

10 is a diagram showing a cross section taken along line CC of FIG. 7. FIG.

[Explanation of symbols]

 1 Oil amount regulator main body 8 Inlet valve 10 Float 20 Pump 21 Cover 22 In-out joint 27 Packing 28 Body 30 Umbrella valve 31 Umbrella valve 33 Vibration plate 34 Piezoelectric element 35 O-ring 36 Pushing ring 38 Terminal cover

Claims (3)

[Claims] 1. A liquid fuel supply apparatus for supplying liquid fuel in an oil amount regulator to a burner by using a pump, wherein the pump changes the volume of the pump chamber, and the oil amount regulator. A liquid fuel supply apparatus, comprising: a suction port for sucking the liquid fuel from the pump chamber to the pump chamber; and a check valve provided at a discharge port for discharging the liquid fuel from the pump chamber to the burner. 2. The liquid fuel supply apparatus according to claim 1, wherein the pump is arranged in a container forming the oil amount regulator. 3. The liquid fuel supply device according to claim 1, wherein the check valve is an umbrella valve provided at an intake port and an exhaust port formed in a bottom portion of a body member having a short tubular shape with a bottom. A liquid fuel supply device characterized by being present.