JPH109557A - Petroleum combustion equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable removal of a cap without contaminating a hand by providing a contact conducting with a drawing pump at the time of mounting a body case of a cartridge tank, controlling drive of the pump by an oil level detecting means of a fixed tank, and hence supplying oil without overturning the cartridge tank. SOLUTION: A coil 22 of a drawing pump 19 is connected to a contact 25 provided at a lower part of a cartridge tank 2. A contact 27 disposed on an upper surface of a fixed tank 5 and provided at a position opposed to the contact 25 of the tank 2 is connected to a drive circuit via a float switch 9. When the tank 2 is mounted in a body case, the switch 9 is turned ON in fuel in the tank 2 as a liquid level in the tank 5 is low, and simultaneously the contact of the lower surface of the tank 2 is conducted with the contact 27 of the upper surface of the tank 5 to energize the coil 22 of the pump 19, thereby pumping the fuel in the tank 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to fuel supply for an oil-fired apparatus, and more particularly to an oil-fired machine used in a general process.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4 and FIG.
The fuel supply pump 43 supplies the fuel in the fixed tank 44 and burns it. The fuel supply to the fixed tank
It is supplied from a cartridge tank 45 mounted thereon and detachably stored in the main body case 41.

To refuel the cartridge tank 45, the cartridge tank 45 is taken out of the main body case 41 and turned upside down.
Is removed, fuel is injected into the cartridge tank 45 from the base 48, and after the fuel has been supplied to the cartridge tank 45, the cap 47 is fastened to the threaded portion of the base 48, and the cap 47 is removed. Is turned down so that it is inserted into the main body case 41, and the receiver 49 attached to the upper surface of the fixed tank 44 is attached.
Then, the cap 47 is inserted into the container and placed on the fixed tank 44.

[0004] The valve at the cap of the cartridge tank 45 is opened by the center pin 50 of the receiver 49, and the fuel in the cartridge tank 45 flows into the fixed tank 44. When the oil level of the fixed tank 44 rises to the position of the valve of the cap 47, the fuel in the cartridge tank 45 stops flowing. When the fuel in the fixed tank 44 is supplied to the combustion unit 42 by the oil feed pump 43 to the combustion unit 42, the oil level in the fixed tank 44 decreases, and air enters the cartridge tank 45 from the valve part of the cap 47, The fuel flows out of the cartridge tank 4 so that the oil level of the fixed tank 44 is kept constant.
No. 4 fuel was supplied.

[0005]

In the above-described conventional oil-fired apparatus, the cartridge tank 45 is pulled out of the main body case 41 in order to supply fuel to the cartridge tank 45.
To turn the cap part upward, use the cartridge tank 45
Needs to be turned over, and after fuel supply, the cap 47 must be closed, and the cartridge tank 45 needs to be turned upside down again to be inserted into the main body case 41,
Handling was troublesome.

Further, the cap 47 is tightened with the base portion 48 and screws. When the cartridge tank 45 is turned over due to insufficient tightening of the cap 47, the cap 47 comes off and fuel flows out. there were.

[0007] Particularly in the recent aging society, the force for tightening the screws is reduced due to the decrease in grip strength, and rapid improvement is desired. Further, when fuel is supplied to the fixed tank 44, the oil level rises to the valve portion of the cap 47, and the cartridge tank 45 is maintained while maintaining a constant oil level by replacing air.
In order to supply the fuel inside, the valve portion of the cap 47 is always wet with the fuel, and when removing the cap 47 to refill the cartridge tank 45, the fuel adheres to the hand, smells, and becomes dirty. Had.

[0008]

In order to solve the above-mentioned problems, the present invention provides an oil supply port and a pump for pumping on the upper surface of a cartridge tank, and when inserted into a main body case, pumps the fuel in the cartridge tank by the pump. , And is supplied to the fixed tank. With the above configuration, since the oil filler port is at the upper part, there is no need to turn the cartridge tank upside down at the time of refueling, and no oil adheres to the hand when the cap of the filler port is removed.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a fixed tank having a combustion section in a main body case, an oil feed pump for supplying fuel to the combustion section and oil level detecting means, and a cartridge tank for supplying fuel to the fixed tank. The cartridge tank is configured to be detachable from the main body case, has an oil supply port for injecting fuel and a pump for supplying fuel to the fixed tank on the upper surface, and the cartridge tank is mounted on the main body case. A contact which is sometimes connected to the pump is provided, and the driving of the pump is controlled by oil level detecting means of the fixed tank.

When the fuel is supplied to the cartridge tank, the fuel supply port of the cartridge tank is provided on the upper surface, so that the fuel supply port lid is not wet with the fuel and the hands are not stained.

When the cartridge is mounted on the main body case, the cartridge tank is not turned over, so that the fuel supply port lid is removed and the fuel does not flow out. The liquid level in the fixed tank can be maintained at a constant level because the pump is controlled by the liquid level detecting means provided in the fixed tank.

Further, a discharge port is provided above a suction port of a pumping pump of a cartridge tank.

Accordingly, when the cartridge tank is taken out of the main body case, the pump at the same time as the pump stops, the fuel at the discharge port flows back into the cartridge tank by the siphon effect, and the fuel drip from the discharge port when transporting the cartridge tank. Never.

Further, a contact is provided between the main body case and the cartridge tank, and the contact is interrupted when the cartridge tank is lifted.

When the main body case falls down, the cartridge tank jumps out of the mounting portion of the main body case, the current conduction of the pumping pump is interrupted, and the pumping pump stops, so that the fuel in the cartridge tank stops flowing out. Can do things.

Further, the oil level detecting means of the fixed tank has a switch configuration in which the oil level is conductive when the oil level is low, and is cut off when the oil level is higher than a certain oil level.

Further, the pump for pumping up the cartridge tank has a circuit which starts driving in response to a driving signal of the oil level detecting means, stops driving in response to a stop signal, and a timer circuit which stops after a predetermined time.

Even if the liquid level detecting means in the fixed tank breaks down, the pumping of the cartridge tank is stopped after a certain period of time, thereby preventing the fuel from overflowing from the fixed tank.

The pump for pumping the cartridge tank outputs a flow rate larger than the flow rate of the oil supply pump by a drive signal of the oil level detection means, and controls the flow rate to be smaller than that of the oil supply pump by a stop signal of the oil level detection means. is there.

During normal operation, fuel can always flow through the pump. When the cartridge tank is taken out, the pump is stopped, the fuel at the discharge port flows back into the cartridge tank, and the pump is driven by air. Become. Since the viscosities of air and fuel are different, the pump has a drawback that the noise is high until the air is discharged. When the driving of the pump is ON-OFF controlled, air bites are generated every time, and the device becomes noisy. By keeping the liquid level in the fixed tank constant, it is possible to reduce dripping at the time of removal and noise during operation of the device.

Further, the discharge port of the pump for pumping up the cartridge tank has an oil receiving portion which opens downward and is open at a position facing the opening, and one of the oil receiving portions communicates with the fixed tank. .

Further, one of the oil receiving portions is configured to open at the center of the fixed tank. Thereby, when the main body falls, the oil level of the fuel in the fixed tank can be set at a position lower than the connection opening with the oil receiving portion, so that the fuel can be prevented from flowing out from the opening.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is an external cross-sectional view of an oil-burning apparatus according to Embodiment 1 of the present invention, and FIG.
FIG. 3 is a circuit diagram of an oil combustion device.

In FIG. 1, reference numeral 1 denotes a main body case, which has an openable / closable tank door 3 for attaching and detaching a cartridge tank 2 at an upper part thereof, and a propeller fan 4 for circulating hot air at a rear part thereof and a hot air outlet at an opposite surface thereof. (Not shown). Reference numeral 5 denotes a float 6 located at the lower part of the cartridge tank 2 and
A fixed tank having a float switch 9 having a switch 8 opened and closed by a magnet 7 provided in the
Numeral 11 denotes a vaporizer having a heater 11a therein, 12 a solenoid having a solenoid 13 at a lower portion thereof, a jet port having a nozzle therein, and the oil pump 10 and the vaporizer 11 comprising an oil pipe 14
It is communicated with.

Reference numeral 15 denotes a burner head which has a plurality of small holes on the outer peripheral side face facing the injection port 12, 16 denotes a combustion cylinder provided so as to cover the burner head, and an upper opening is provided. 16a denotes a burner head 15 and a combustion cylinder 16 mounted thereon. Place, body case 1
Is a box duct that communicates the propeller fan 4 with the hot air outlet.

At the upper part of the cartridge tank 2,
7 and an oil supply port lid 18 and a pumping pump 19 which are fitted to the oil supply port 17. The pump 19 has a cylindrical plunger 20 made of a magnetic material and a spring 21 inside, and is constituted by a coil part 22 on the outer periphery. A suction port 23 is opened at a lower part in the cartridge tank, and a discharge port 24 is formed on the side of the cartridge tank. It opens downward.

The coil portion 22 of the pump 19 is connected to a contact A25 provided at the lower portion of the cartridge tank 2. Reference numeral 26 denotes an oil receiving portion whose upper surface is opened at a position facing the discharge port 24 of the pumping pump 19 and one of which is communicated with the center of the upper surface of the fixed tank 5.

Reference numeral 27 denotes a contact B provided on the upper surface of the fixed tank 5 and opposed to the contact A 25 of the cartridge tank 2 and is connected to a drive circuit (not shown) via the flow and the switch 9. .

Next, the operation and operation will be described. When the operation switch 29 is turned on, the heater 11a of the vaporizer 11 is energized and the temperature of the vaporizer 11 rises and reaches a predetermined temperature. When the temperature reaches a predetermined temperature, the oil feed pump 10 is driven and the solenoid 13 provided at the lower part of the injection port 12 opens the nozzle. . The fuel sent from the oil feed pump 10 is gasified in the carburetor 11 and ejected from the nozzle.
The igniter 30 provided in the vicinity of the burner head 15 discharges, and the gas ejected from the nozzle is ejected from a small hole on the side of the burner head 15 and ignited to start combustion. At the same time, a propeller fan 4 provided on the back of the main body case 1 rotates, and warm air is blown out from a warm air outlet on the front to heat the room.

On the other hand, when the cartridge tank 2 is mounted on the main body case 1, the fuel in the cartridge tank 2 flows and switches 9 when the liquid level in the fixed tank 5 is low.
Is turned on, and at the same time, the contact A on the lower surface of the cartridge tank 2 and the contact B on the upper surface of the fixed tank 5 are energized, energizing the coil 22 of the pumping pump 19, the plunger 20 moves up and down, and the Is pumped up and discharged from the discharge port 24.

The fuel that has flowed out passes through the oil receiving portion 26 therebelow and flows into the fixed tank 5. When the oil level of the fixed tank 5 rises and the float 6 lifts up, the float switch 9
Are opened, the pumping pump 19 stops conducting, and the pumping pump 19 stops. When fuel is supplied to the carburetor 11 by the oil feed pump 10 and the oil level in the fixed tank 5 drops, the flow and the switch 9 are energized, and the pumping pump 19 of the cartridge tank 2 is driven again to supply fuel to the fixed tank. You.

The drive circuit of the pump 19 for pumping the cartridge tank 2 is provided with a timer circuit for receiving a signal indicating that the float switch 9 has been turned on and for shutting down after a predetermined time.

[0033]

As apparent from the above description, according to the present invention, the following effects can be obtained.

When the cartridge tank is taken out of the main body case, the contact A on the lower surface of the cartridge tank and the contact B on the upper surface of the fixed tank are separated, the conduction to the pump is cut off, and the pump stops. At the same time as the stop, the fuel in the pump will flow back into the cartridge tank due to the siphon effect because the suction port is below the discharge port.
There is no dripping from the discharge port. In addition, since the fuel supply to the cartridge tank can be performed by opening the fuel supply port lid at the top of the cartridge tank, there is no fear that the fuel supply port lid gets wet with fuel and the hands are not stained.

Further, even if the filler opening lid is not completely closed, there is no need to turn the cartridge tank over, so that the fuel inside does not flow out.

The contact point between the cartridge tank and the fixed tank is configured to conduct when the cartridge tank is placed on the fixed tank. Therefore, if the main unit falls over, the cartridge tank will slide upward. The contacts are broken and there is no danger of the pump operating.

Further, by providing the controller with a timer circuit for stopping the pump after a predetermined time has passed from the conduction signal of the float switch, even if the float of the float switch is caught on the way and the contact of the float switch cannot be opened. Before the fuel overflows from the upper surface of the fixed tank, the pump can be stopped so that the fuel does not spill out of the main body.

Further, when the pump for pumping the cartridge tank stops, the fuel inside flows backward, and the plunger portion becomes an air layer. When the fuel is pumped out by pumping air every time fuel is pumped into the fixed tank, the stroke of the flanger increases in the air layer due to the difference in viscosity between the air and the fuel, generating noise. By controlling the pump by the signal of the float switch and setting the flow rate to keep the liquid level of the fixed tank constant, the plunger portion can always be a liquid layer, and the noise due to air bite can be reduced. In addition, by connecting one of the oil receivers located at the position facing the discharge port of the pump to the center of the fixed tank, the amount of fuel received in the fixed tank increases when the main unit falls and the fuel flows out. The amount can be reduced.

[Brief description of the drawings]

FIG. 1 is an overall sectional view of a first embodiment of the present invention.

FIG. 2 is a sectional view of a main part in the first embodiment.

FIG. 3 is a circuit diagram according to the first embodiment.

FIG. 4 is an overall sectional view of a conventional combustion device.

FIG. 5 is a sectional view of a main part of a conventional combustion device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 2 Cartridge tank 5 Fixed tank 9 Float switch 10 Oil supply pump 17 Oil supply port 19 Pumping pump 23 Suction port 24 Discharge port 25 Contact A 27 Contact B

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshikatsu Fukunaga 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (8)

[Claims] A fixed tank having a combustion section, an oil feed pump for supplying fuel to the combustion section, and an oil level detecting means in a main body case; a cartridge tank for supplying fuel to the fixed tank; Is configured to be detachable from the main body case, has a filler port for injecting fuel and a pump for supplying fuel to the fixed tank on the upper surface,
An oil combustion device comprising: a contact that is electrically connected to the pump when the cartridge tank is mounted on the main body case; and controls driving of the pump by oil level detection means of the fixed tank. 2. The petroleum combustion apparatus according to claim 1, wherein a discharge port is provided above a suction port of the pumping pump of the cartridge tank. 3. The petroleum combustion apparatus according to claim 1, wherein a contact is provided between the main body case and the cartridge tank, and the contact is interrupted when the cartridge tank is lifted. 4. The oil combustion device according to claim 1, wherein the oil level detecting means of the fixed tank has a switch configuration in which a conductive state is established when the oil level is at a low level, and a cutoff state is established when the oil level is higher than a certain level. 5. A pump for pumping up a cartridge tank,
2. The petroleum combustion apparatus according to claim 1, further comprising: a circuit that starts driving according to a driving signal of the oil level detecting means and stops driving according to a stop signal, and a timer circuit that stops after a predetermined time. 6. A pump for pumping a cartridge tank,
5. The oil combustion device according to claim 4, wherein a flow rate higher than the flow rate of the oil supply pump is output by a drive signal of the oil level detection means, and the flow rate is controlled to be lower than that of the oil supply pump by a stop signal of the oil level detection means. 7. A discharge port of a pump for pumping up a cartridge tank has an oil receiving portion opened downward, and an oil receiving portion opened at a position opposed to the opening, and one of the oil receiving portions communicates with a fixed tank. An oil-burning apparatus as described. 8. The oil burning device according to claim 7, wherein one of the oil receiving portions is opened at a central portion of the fixed tank.