JPH04225714A - Liquid fuel burner - Google Patents

Abstract

PURPOSE:To enable long time combustion by providing a plurality of oil receiving sections which store oil pumped up by a fuel pump and a plurality of oil supply tanks which supply oil to said oil receiving sections and enabling the supply of oil to a combustion section until said tanks are emptied. CONSTITUTION:On both sides of an oil fan heater there are installed a right oil receiving tank 16 and a right oil supply tank on the right side, and a left oil receiving tank 18 and a left oil supply tank 19. Both the oil receiving tanks 16 and 18 are connected with a hollow communication pipe 22. For example, when the right oil supply tank 17 is consumed and emptied, the oil level in both the oil receiving tanks 16 and 18 is lowered so that the left oil receiving tank 18 may be released to the atmosphere by way of the communication pipe 22 and the right oil receiving tank 16, which makes it possible to replace the oil in the left oil supply tank with the air. As a result, the oil in the left oils supply tank is transferred to the right oil receiving tank 16 by way of the communication pipe 22 while a fuel pump continues its supply to a vaporizer.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to liquid fuel combustion devices such as oil fan heaters and oil stoves.

0002

[Prior Art] In this type of liquid fuel combustion device, a predetermined amount of oil is supplied from an oil supply tank to an oil receiving tank, and a fuel pump such as an electromagnetic pump is used to supply combustion parts such as burners from the oil receiving tank. By supplying oil to the combustion chamber, combustion occurs in the combustion section. However, since the capacity of the fuel tank (3 to 5 liters) was small, it was necessary to refuel frequently.

[0003] Therefore, in the system disclosed in Japanese Utility Model Publication No. 46-5412, a fuel tank and an oil receiving tank are provided on the left and right sides of the combustion section, respectively, and the heights of the oil outlet of the left and right fuel tanks are different. By setting this, even if one fuel tank becomes empty, oil is replenished from the other fuel tank and combustion continues.

0004

[Problems to be Solved by the Invention] Such a liquid fuel combustion device has the advantage that combustion can be continued for a longer period of time compared to a device with one fuel tank and one oil receiving tank, and the hassle of refueling is reduced. There is. However, because the left and right oil tanks are in communication, if the combustion equipment is installed at an angle, there is a risk that the oil in one oil tank will move to the other tank, causing an oil leak. .

[0005] Therefore, in recent years, a safe liquid fuel combustion device has been developed that does not cause oil leakage even when the combustion device is installed at an angle (the angle of inclination is within 10 degrees). This combustion device is shown in FIG. 9. When one oil supply tank 1 becomes empty and the oil in one oil receiving tank 2 decreases, the oil transfer pump 3 is driven and the oil is transferred from the other oil tank 4 to the other oil tank 2. Oil replenished in the oil receiving tank 5 is transferred to one oil receiving tank 2, and this transferred oil is supplied to the combustion section 7 by the fuel pump 6.

[0006] With this system, oil is transferred from the other oil tank 5 only when the oil level in one oil tank 2 decreases, so even if the combustion device is installed tilted, The oil in the oil receiving tank 5 does not flow out to one of the oil receiving tanks 2, and there is no fear of oil leakage.

By the way, the conventional liquid fuel combustion apparatus shown in FIG. 9 requires a pump for transferring oil in addition to the fuel pump that supplies oil to the combustion section, which has the disadvantage of significantly increasing costs. Ta.

The present invention has been made in view of the above-mentioned circumstances, and is an object of the present invention to reduce the troublesomeness of refueling, prevent oil leakage when a combustion device is installed at an angle, and suppress an increase in cost. The purpose of this project is to provide a liquid fuel combustion device that can burn liquid fuel.

[0009]

[Means for Solving the Problems] The present invention provides a combustion section such as a burner, a fuel pump that supplies oil to the combustion section, a plurality of oil receiving sections that store oil pumped by the fuel pump, and a fuel pump that supplies oil to the combustion section. It is equipped with a plurality of oil supply tanks that replenish oil to oil receivers, and a communication part that communicates the plurality of oil receivers, one of the plurality of oil receivers is open to the atmosphere, and the other is a fuel tank. It is constructed to be airtight when set.

Further, according to the present invention, in the liquid fuel combustion apparatus described above, the communication portion has an upward slope from one oil receiving portion open to the atmosphere to the other oil receiving portion.

Further, the present invention provides a combustion section such as a burner, a fuel pump that supplies oil to the combustion section, a plurality of oil receivers for storing oil pumped by the fuel pump, and a plurality of oil receivers provided in these oil receivers. a plurality of oil supply tanks fitted into the respective receivers, and a communication portion that communicates the plurality of oil receivers, one of the plurality of oil receivers is open to the atmosphere, and The other side is configured to be airtight when the oil tank is set, and at least the oil receiver tray on the side open to the atmosphere is provided with an oil spill hole in the side wall close to the outside of the oil receiver. The configuration is as follows.

0012

[Operation] With this structure, oil continues to be supplied to the combustion section until the plurality of oil supply tanks become empty, making it possible to continue combustion for a long period of time. Since oil from multiple oil tanks is used in this way, there is no need to refuel frequently. In addition, while one oil pan is open to the atmosphere, the other oil pan is airtight when the fuel tank is installed, so even if the combustion equipment is installed at an angle, one oil pan will remain open to the atmosphere. It is possible to prevent oil from continuing to move to the other oil receiving part, so there is no need to worry about oil leakage, and there is no need for an oil transfer pump separate from the fuel pump that supplies oil to the combustion part, so it is not expensive. This eliminates the need to increase the number of pumps used, increasing safety and suppressing cost increases.

Furthermore, in the liquid fuel combustion apparatus of claim 2, even if the heights of the oil outlets of the plurality of fuel tanks are approximately the same, the oil in one fuel tank can always be consumed first. For example, there is no need to use tank fixing stands of different heights to make the heights of the oil receiving tanks different, which simplifies the configuration. This is very convenient as the fuel tank will be emptied first.

Furthermore, in the liquid fuel combustion device of claim 3, when the combustion device is installed at an angle, the oil outlet of the fuel tank is submerged under the residual oil level in the saucer, so that the oil in the fuel tank is This reliably prevents air displacement, prevents the oil tank from being continuously replenished with oil, and further prevents oil leaks.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a kerosene fan heater will be described below with reference to the drawings of FIGS. 1 to 4.

In FIGS. 1 and 2, reference numeral 11 denotes an exterior case having a hot air outlet (not shown) on the front surface. Inside this exterior case 11 is a burner fan 12, and from this burner fan 12 there is a combustion air outlet. Evaporative burner 1 supplied with air
3, and a combustion cylinder 1 with an open top connected to this burner 13.
4, a ventilation guide device 15 facing the combustion tube 14,
An air intake port (
A warm air blower fan (not shown) is installed in the center to guide air flowing in from the airflow guide device 15, mix it with combustion gas from the combustion tube 14, and discharge it from the hot air outlet. A right oil receiving tank 16 and a right oil supply tank 17, and a left oil receiving tank 18 and a left oil supply tank 19 are provided on both the left and right sides thereof, respectively.

The height of the oil outlet 17A of the right fuel tank 17 is 5 to 8 mm higher than the oil outlet 19A of the left fuel tank 19.
It is set mm higher.

The right oil receiving tank 16 is provided with a fuel pump 21 such as an electromagnetic pump that supplies oil (kerosene) in the right oil receiving tank 16 to the burner 13 via an oil pipe 20. The receiving tank 16 is always open to the atmosphere,
Further, the lower end of the pumping pipe 21A of the fuel pump 21 faces near the inner bottom of the right oil receiving tank 16, and a hollow pipe-shaped pipe is provided between both oil receiving tanks 16 and 18 to communicate them. A communication pipe 22 is provided.

The communication pipe 22 is provided substantially horizontally, and its right end portion is connected to the oil outlet 17 of the right oil tank 17.
It is connected to the side wall of the right oil receiving tank 16 located slightly lower than A, while the left end is connected to the oil outlet 1 of the left oil tank 19.
It is connected to the side wall of the left oil receiving tank 18, which is located at approximately the same height as 9A.

Inside the oil receiving tanks 16 and 18,
Receptacles 25 and 26 are provided, and these receptacles 2
The mouthpieces 27 and 28 of both oil supply tanks 17 and 19 having the oil outflow ports 17A and 19A are fitted into the holes 5 and 26, respectively, and the bottom walls of the receiving trays 25 and 26 have oil outflow holes 29, 30 are provided.

[0021] Also, the saucer 26 of the left oil pan 18
A ring-shaped packing 32 made of an elastic and sealing material such as oil-resistant rubber and having an opening 31 approximately in the center is disposed on the top of the packing 32.
When setting the fuel tank 19, which has the mouthpiece 28 of the left fuel tank 19 passed through the opening 31, the edge of the opening 31 comes into close contact with the outer peripheral surface of the mouthpiece 28, and the communication pipe 22 is filled with oil. When sealed, the left oil tank 18 becomes airtight.

[0022] In the above configuration, when operation is started,
The vaporization heater (not shown) heats the carburetor (not shown) of the burner 13, and when the vaporizer is sufficiently heated, the burner fan 12 and fuel pump 21 are driven and the igniter (not shown) is activated. is activated, and the burner 13 starts combustion. At this time, the fuel pump 21 pumps up oil from the right oil receiving tank 16 and supplies the oil to the carburetor of the burner 13 via the oil feed pipe 20. Also, as shown in FIG. The right oil supply tank 17 is being replenished with oil.

The combustion gas of the burner 13 is transferred to the combustion tube 14.
The hot air rises inside and flows out into the air guide device 15, where it mixes with air from a hot air blower fan (not shown) to become warm air, and is discharged into the room from a hot air outlet (not shown). and perform heating.

Now, when the oil in the right oil tank 17 is consumed and becomes empty, as shown in FIG.
The oil level in the left oil receiving tank 18 has become lower than the state shown in Figure 1.
is opened to the atmosphere via the communication pipe 22 and the right oil receiving tank 16. In this way, the oil in the left oil tank 19 can be replaced with air, the oil in the left oil tank 19 is replenished into the left oil tank 18, and this oil moves to the right oil receiving tank 16 through the communication pipe 22. , the fuel pump 21 continues to supply oil to the carburetor. In this way, combustion continues until both the right fuel tank 17 and the left fuel tank 19 are empty of oil.

Next, as shown in FIG. 3, when this oil fan heater is installed tilted upward to the left at an angle of approximately 10 degrees, the oil in the left oil receiving tank 18 initially flows through the communication pipe 22. Although it flows into the right oil tank 16, the communication pipe 22 is immediately sealed with oil, and the left oil tank 18 is made airtight by the action of the packing 32 by setting the left oil tank 19. Therefore, the oil in the left fuel tank 19 is only slightly replaced by air, and the oil outlet 1 of the left fuel tank 19
Even if 9A is exposed above the oil surface, the oil from the left oil supply tank 19 will stop flowing out, and the movement of oil from the left oil tank 18 to the right oil tank 16 will stop.

Further, as shown in FIG. 4, when the oil fan heater is installed tilted upward to the right, contrary to the above-mentioned tilted state, the oil in the right oil receiving tank 16 passes through the communication pipe 22 and flows into the left oil fan heater. The oil flows out into the left oil receiving tank 18, but since this left oil receiving tank 18 is closed by the packing 31 and the mouthpiece 28 of the left oil supply tank 19, the oil does not flow out to the outside and remains in the left oil receiving tank 18. Then, when the oil level in the right oil tank 16 rises and the oil outlet 17A of the right oil tank 17 sinks below the oil level, the oil from the right oil tank 17 stops flowing out.

According to this embodiment, while there is oil in the right oil tank 17, the right oil tank 16 is drained from the right oil tank 17.
The oil replenished from the left oil tank 19 is pumped up by the fuel pump 21 and supplied to the burner 13, and when the right oil tank 17 becomes empty, the oil replenished from the left oil tank 19 to the left oil receiving tank 18 is supplied to the burner 13. Therefore, both oil tanks 17 and 19
This allows combustion to continue until the fuel is empty, eliminates the hassle of frequent refueling, and is highly user-friendly.

Further, the right oil receiving tank 16 is always open to the atmosphere, but the left oil receiving tank 18 has a packing 32 provided on the upper part of the receiving tray 26 and a left oil supplying tank tightly fitted into the opening 31 of this packing 32. Since the tank 19 is airtight with the mouthpiece 28, even if the oil fan heater is installed at an angle, the oil in one oil tank will not continue to move to the other oil tank, preventing oil leaks. There is no need to worry about causing damage, and it is extremely safe.

Furthermore, a packing 32 is attached to the left oil receiving tank 18.
This eliminates the need for a pump for transferring oil in addition to the fuel pump 21 that supplies the burner 13 as in the past, so there is no need to increase the number of expensive pumps used, and the cost is significantly reduced. It never rises.

FIG. 5 shows another embodiment. In the embodiment described above, the left and right oil receiving tanks are connected through a substantially horizontal communication pipe 22, but in this embodiment, the side opened to the atmosphere is The left and right oil tanks 16 and 18 are connected by a communication pipe 22 that slopes upward from the right oil tank 16 to the left oil tank 18. The oil outlet ports 17A and 19A are at approximately the same height.

In this embodiment, when the oil in the right oil supply tank 17 is consumed and becomes empty, the oil levels in both oil receiving tanks 16 and 18 drop below the state shown in FIG. The receiving tank 18 is temporarily connected to the communication pipe 22 and the right oil receiving tank 16.
It is opened to the atmosphere through the left oil supply tank 19, allowing the oil in the left oil supply tank 19 to be replaced with air, and the oil in the left oil supply tank 19 is replenished into the left oil receiving tank 18. When the oil level rises during oil replenishment at this time, the left oil receiver tank 18 becomes airtight again and oil replenishment stops, but the fuel pump 21
6 is supplied to the burner 13 to lower the oil level, and the left oil receiving tank 18 is again opened to the atmosphere via the communication pipe 22 and the right oil receiving tank 16, and the oil in the left oil supply tank 19 is replenished. . Since such a state will be repeated, even if the right oil tank 17 is empty, the oil replenished from the left oil tank 19 to the left oil receiving tank 18 will be supplied to the burner 13, and both oil tanks 17, Burning can continue until 19 is empty.

In this embodiment, both oil receiving tanks 16
, 18 is sloped upward from the right oil receiving tank 16 to the left oil receiving tank 18, so that the outflow ports 17A, 19 of the left and right oil supply tanks 17, 19
Even if the heights of A are approximately the same, the oil in the right oil tank 17 can always be consumed first.In order to determine the priority, tank fixing stands with different heights are used to connect the left and right oil tank 17. There is no need to design or manufacture parts to make the heights of 16 and 18 different, simplifying the configuration, and since one fuel tank is always emptied first, only one fuel tank can be used. This is convenient when refueling.

FIGS. 6 to 8 show still another embodiment, in which the oil outflow holes 29 and 30 of the receiving trays 25 and 26 provided in both oil receiving tanks 16 and 18 are connected to each other. These are provided on the peripheral walls of the receiving trays 25 and 26 at locations close to the outside of the oil receiving tanks 16 and 18.

In this embodiment, as shown in FIGS. 7 and 8, the kerosene fan heater moves about 1 inch in either the left or right direction.
Even if it is installed at an angle of 0 degrees, the left and right saucers 25,
A reservoir of oil is maintained in 26, and these saucers 25, 26
Since the oil outflow ports 17A and 19A of the left and right oil supply tanks 17 and 19 remain submerged below the residual oil level inside, the oil and air exchange in both oil supply tanks 17 and 19 is quickly and reliably prevented. This prevents oil leakage from occurring due to the oil in the oil supply tank being continuously replenished into the oil receiving tank, making it possible to better prevent oil leakage.

In the embodiments shown in FIGS. 6 to 8, oil outflow holes 29 and 30 are provided in the peripheral walls of the left and right receiving pans 25 and 26, but the right oil receiving tank is always open to the atmosphere. An oil outflow hole may be provided only in the receiving tray 25 on the 16 side in the peripheral wall facing the outer side of the oil receiving tank 16.

[0036]

[Effects of the Invention] Since the present invention is constructed as described above, combustion can be continued until multiple refueling tanks are empty, and the frequency of refueling can be reduced, which can only improve usability. Even if the equipment is installed at an angle, oil can continue to be replenished from the oil supply tank and prevent it from overflowing from the oil receiver, improving safety and reducing the need for expensive pumps. This makes it possible to suppress cost increases and provide an easy-to-use, safe, and inexpensive device.

[0037] Furthermore, in the communication part that communicates the plurality of oil receiving parts,
Since the slope is upward from one oil pan open to the atmosphere to the other oil pan, it is possible to prioritize the use of the oil without having to change the height of the oil outlet of each fuel tank. This is advantageous when only one fuel tank is used for refueling, and the configuration can be simplified.

[0038]Furthermore, at least the tray of the oil receiver on the side that is open to the atmosphere has an oil spill hole in the side wall close to the outside of the oil receiver, so if the device is installed at an angle, Furthermore, replenishment of oil from the oil supply tank can be quickly and reliably prevented, and the risk of oil leakage can be more reliably prevented.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the internal structure of a petroleum fan heater showing an embodiment of the liquid fuel combustion device of the present invention.

FIG. 2 is an explanatory diagram of the internal structure in a state where the right fuel tank is also empty.

FIG. 3 is an explanatory diagram illustrating a state in which the device is installed tilted upward to the left.

FIG. 4 is an explanatory diagram illustrating a state in which the device is installed tilted upward to the right.

FIG. 5 is an explanatory diagram of the internal structure of a kerosene fan heater as another embodiment.

FIG. 6 is an explanatory diagram of the internal structure of a kerosene fan heater as yet another embodiment.

FIG. 7 is an explanatory diagram illustrating a state in which the oil fan heater of FIG. 6 is installed tilting upward to the left.

FIG. 8 is an explanatory diagram illustrating a state in which the oil fan heater of FIG. 6 is installed with an upward slope to the right.

FIG. 9 is an explanatory diagram of the internal structure of a conventional oil fan heater.

[Explanation of symbols]

13 Burner (combustion part) 16 Right oil pan (oil pan) 17 Right fuel tank (fuel tank) 18 Left oil pan (oil pan) 19 Left fuel tank (fuel tank) 21 Fuel pump 22 Communication pipe (communication part) 25 Saucer 26 Saucer 29 Oil spill hole 30 Oil spill hole

Claims (3)

[Claims] Claim 1: A combustion section such as a burner, a fuel pump that supplies oil to the combustion section, a plurality of oil receivers that store oil pumped up by the fuel pump, and a system for replenishing oil to these oil receivers. It is equipped with a plurality of oil supply tanks and a communication part that communicates a plurality of oil receivers, one of the plurality of oil receivers is open to the atmosphere, and the other is airtight when the fuel tank is set. A liquid fuel combustion device characterized by comprising: 2. The communication portion according to claim 1, wherein the communication portion has an upward slope from one oil receiving portion open to the atmosphere to the other oil receiving portion. Liquid fuel combustion equipment. Claim 3: A combustion section such as a burner, a fuel pump that supplies oil to the combustion section, a plurality of oil receivers that store oil pumped up by the fuel pump, and a receiver provided in these oil receivers. , a plurality of oil supply tanks each fitted into the receiving tray, and a communication portion that communicates the plurality of oil receiving portions, one of the plurality of oil receiving portions is open to the atmosphere, and the other is open to the atmosphere. When setting up the oil tank, it should be configured to be airtight, and at least the side of the oil receiver that is open to the atmosphere should have an oil spill hole in the side wall close to the outside of the oil receiver. Characteristics of liquid fuel combustion equipment.