JPH04151421A - Liquid fuel burner - Google Patents

Abstract

PURPOSE:To improve safety performance by installing an on/off valve which opens and closes a suction port of a first suction pipe and that of a second suction pipe respectively in conformity with fluctuations in the oil level in a first oil receiving pan and a second oil receiving pan. CONSTITUTION:When an oil fan heater is slantingly installed with the right side raised at an inclination angle of about 10 degrees, a float switch 17 in a left sided oil receiving pan 9 is turned on, thereby halting combustion and closing an on/off valve 15, which forces to break up the communication between a right sided oil receiving pan 7 and the left sided oil receiving pan 9 and prevents the oil in the right sided oil receiving par from flowing out into the left sided oil receiving pan 9. When the oil fan heater is slantingly installed with the left side raised, a float switch 16 in the right sided oil receiving pan 10 is turned on, thereby closing the on/off valve 15. Therefore, even when the heater is installed with the left side raised, there will be no communication between the right sided oil receiving pan 7 and the left sided oil receiving pan 9, which prevents the oil in the left sided oil receiving pan 9 from flowing out into the right sided oil receiving pan 7.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to liquid fuel combustion devices such as oil fan heaters and oil stoves.

(b) Conventional technology In this type of liquid fuel combustion device, a predetermined amount of oil is supplied from the oil supply tank to the oil pan. By supplying oil to a combustion part such as a burner using a fuel pump such as a magnetic pump, combustion is performed in the combustion part. However, since the capacity of the fuel tank (3 to 51) was small, it was necessary to refuel frequently. Therefore, in the method disclosed in Japanese Utility Model Publication No. 46-5412, a fuel tank and an oil pan are provided on the left and right sides of the combustion section, and the heights of the oil outlet of the left and right fuel tanks are set to be different. Even if one fuel tank becomes empty, fuel is supplied from the other fuel tank and combustion continues.

(c) Problems to be Solved by the Invention This type of liquid fuel combustion device has the advantage that combustion can be continued for a longer period of time compared to a device with a single fuel tank and oil pan, and the hassle and hindrance of refueling can be reduced. be. However, since the left and right oil pans communicate through the combustion part, if the combustion device is installed tilted, there is a risk that the oil in one oil pan will move to the other oil pan, causing an oil leak. there were.

Therefore, in recent years, a safe liquid fuel combustion device has been developed that does not cause oil leakage even if the combustion device is installed at an angle (inclination angle of 10 degrees or less). This combustion device is shown in Figure 6. When one oil supply tank (A) becomes empty and the oil in one oil pan (B) decreases, the oil transfer pump (C) is activated and the other oil tank (A) becomes empty. The oil replenished from the oil supply tank (d) to the other oil pan (ladle) is transferred to one oil pan (b), and the oil that was blocked in the transfer is transferred to the combustion part (to) to the fuel pump (to). ).

In this case, the combustion device is installed at an angle because oil is transferred from the other oil pan (wood) to one oil pan (b) only when the oil level in one oil pan (b) decreases. Even in the case of oil leakage, the oil from the other oil pan (0) will not flow out into one oil pan (0), and there is no risk of oil leakage.

However, the conventional liquid fuel combustion apparatus shown in FIG. 6 requires a pump for transferring oil in addition to a fuel pump for supplying oil to the combustion section, which has the drawback of significantly increasing costs.

The present invention was developed in view of the above-mentioned circumstances, and is capable of reducing the troublesomeness of refueling, preventing oil leakage due to movement of oil between a plurality of oil pans, and suppressing increases in costs. The purpose is to provide liquid fuel combustion equipment.

(d) 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, and first and second oil pumps that store the oil pumped by the fuel pump. A first pumping pipe led out from the first oil receiving tray and a second pumping pipe led out from the second oil receiving tray, comprising a receiving tray and first and second oil supply tanks for replenishing oil to these oil receiving trays. At least one of the pumping pipes is provided with an on-off valve, or an on-off valve is provided in at least one of the pumping pipes on the upstream side of the fuel pump, or a valve is installed in the first and second oil pans to respond to fluctuations in the oil level in these oil pans. 1st and 2nd
The structure is equipped with on-off valves that open and close the suction ports of the pumping pipes.

(f) Effect With this configuration, oil continues to be supplied to the combustion section until the oil in the first oil tank and the second oil tank are emptied, so that combustion can be continued for a long time. In this way, since the oil in both the first oil tank and the second oil tank is used, there is no need to refuel frequently.
The first pumping pipe led out from the first oil receiving tray and the second pumping pipe led out from the second oil receiving tray are communicated with each other on the upstream side of the fuel pump, and at least one pumping pipe is provided with an on-off valve. , by providing on-off valves in the first and second oil pans that open and close the suction ports of the first and second pumping pipes, respectively, in accordance with fluctuations in the oil level in these oil pans, the combustion device can be activated. If the installation is tilted, the oil in one oil pan can be prevented from being transferred to the other oil pan, so there is no need to worry about oil leakage, and the oil can be transferred separately from the fuel pump that supplies oil to the combustion section. Since it does not require a separate pump, there is no need to increase the number of expensive pumps used.
It is possible to suppress a significant increase in costs while increasing safety.

(F) Embodiment Hereinafter, an embodiment of the present invention suitable for an oil furnace will be described with reference to the drawings of FIGS. 1 to 3.

In Figures 1 to 3, (1) is an exterior case that has a horizontally elongated hot air outlet (2) in the center of the front, and inside this exterior case (1) are a burner fan (3) and a burner fan (3). A vaporizing burner (4) that can be supplied with combustion air from a fan (3), a combustion tube (5) with an open top connected to this burner (4), and a ventilation guide that faces this combustion tube (5). The air flowing in from the device (6) and the air suction port (not shown) provided at the center of the back of the outer case (1) is guided to the ventilation guide device (6), and the combustion gas from the combustion tube (5) is A blower fan (
A right oil pan (7) and a right oil tank (8), and a left oil pan (9) and a left oil tank (10) are provided on both left and right sides of the oil tank (not shown). ing.

The height of the oil outlet (8A) of the right fuel tank (8) is approximately 5 to 50 mm higher than the oil outlet (IOA) of the left fuel tank (10).
8■It is set too high.

In addition, at the top of the first pumping pipe (11) that has been led out from the right oil pan (7), there is a fuel such as an electromagnetic pump that supplies oil (kerosene) to the burner (4) through an oil feed pipe (12). A pump (13>) is provided, and the tip of the second pumping pipe (14>) led out from the left oil pan (9) is connected to the first pumping pipe (11) on the upstream side of the fuel pump (13). An on-off valve (15) such as a solenoid valve is provided at a suitable location in the middle of the second pumping pipe (14).In addition, the right oil pan (7) and the left oil pan (9) ) are provided with float switches (16) and (17) as oil level detectors, and when these float switches 16) and <17) are off, the on-off valve (15) is opened. and these float switches (16) and (17
) is turned on, the on-off valve (15
) is now closed. The float switches (16) and <17) are connected to the first and second pumping pipes (11) and (1) located in the left and right oil pans (7) <9).
4), but the pumping pipe (11
) and (14) may be separate from
(18) is a residual oil switch that senses the weight of the right fuel tank (8), and this residual oil switch (18) is activated when the right fuel tank (8) is empty. ).

In the above configuration, when the operation starts, the vaporization heater (
A burner (not shown) heats the carburetor (4), and when the carburetor is sufficiently heated, the burner fan (3) and fuel pump (13) are driven, the igniter is activated, and the burner (4) is heated.
4) starts combustion. At this time, the fuel pump (13) pumps up the oil in the right oil pan (7) through the first pumping pipe (11), and sends the oil to the vaporizer of the burner (4) through the oil feed pipe (12). is supplied to. The combustion gas of the burner (4) rises inside the combustion tube (5) and passes through the ventilation guide device (6).
There, the heated air mixes with air from a blower fan (not shown) to become warm air, which is then discharged into the room from the warm air outlet (2) to heat the room.

Now, when the oil in the right fuel tank (8) is consumed and becomes empty, the remaining oil switch (18) is activated, and the alarm or right fuel tank (8) is activated.
8), the fuel pump (13) pumps up oil from the left oil pan (9) via the second pumping pipe (14), and continues to supply oil to the carburetor of the burner (4). . In this way, combustion continues until the right fuel tank (8) and the left fuel tank (10) are empty of oil.

Next, as shown in Fig. 3, when this oil fan heater is tilted upward to the right at an inclination angle of approximately 10 degrees, the float switch 17) in the left oil pan (9) is turned on.
As a result, combustion is stopped and the on-off valve 15〉 is closed, and the right oil pan (7) and the left oil pan (9) no longer communicate with each other, and the oil in the right oil pan (7) is transferred to the left oil pan (7). 9) If the oil fan heater is installed tilted upward to the left, contrary to the tilted state described above, the float switch (16) in the right oil pan (10) will turn on. Since the on-off valve (15) is closed, even if the installation is tilted upward to the left, the right oil pan (7) and the left oil pan (9) will no longer communicate with each other, and the left oil pan (9) will not communicate with the left oil pan (9). Oil is on the right oil pan (7)
It does not flow out to the side.

According to this embodiment, as long as there is oil in the right oil tank (8), the oil that has been refilled from the right oil tank (8) to the right oil pan (7) is pumped up to the fuel pump (13) and the burner is heated. (
4) and when the right oil tank (8) becomes empty, the oil replenished from the left oil tank (10) to the left oil pan (9) can be supplied to the burner (4), so both tanks (8) (1
0) can continue combustion until it is empty, eliminating the trouble of frequent refueling and providing excellent usability.

In addition, the first pumping pipe (
11) and the tip of the second pumping pipe (14) led out from the left oil pan (9) on the upstream side of the fuel pump (13).
), so even if the kerosene fan heater is installed at an angle, there is no need to worry about oil from one oil pan moving to the other oil pan and causing an oil leak. , which has excellent safety, and does not require a pump for oil transfer in addition to the fuel pump (13) that supplies oil to the burner (4), which is required in the past, reducing the number of expensive pumps used. There is no need to increase the cost, and the cost does not increase significantly.

In addition, in this embodiment, the on-off valve (15) is connected to the second pumping pipe (
14>, but it may be provided in the first pumping pipe (11) upstream of the communication part with the second pumping pipe (14).

Moreover, FIGS. 4 and 5 show the internal structure of an oil fan heater showing another embodiment of the present invention. Saucer (7)
(9) Float-type on-off valves (19) (20) that open and close the suction ports (IIA) (14A) of the first and second pumping pipes (11) (14), respectively, according to fluctuations in the oil level.
has been established. In this case, when the oil fan heater is installed tilting upward to the right as shown in Fig. 5, the suction port (IIA) of the first pumping pipe (11) will open and close as the opening/closing valve (IIA) changes as the oil level changes. 19), and when the oil fan heater is installed tilting upward to the left, the suction port (14A) of the second pumping pipe <14> is closed by the on-off valve (20). .

Other operations are similar to those of the embodiment described above.

(G) Effects of the Invention Since the present invention is configured as described above, combustion can be continued until multiple refueling tanks are empty, reducing the frequency of refueling, which not only improves usability. This prevents oil from moving from one oil pan to the other even if the equipment is installed tilted, eliminating the risk of oil leakage, improving safety, and eliminating the need for expensive pumps. There is no need to increase the number of devices used, the increase in cost can be suppressed, and an inexpensive device can be provided.

[Brief explanation of the drawing]

1 to 5 relate to an embodiment in which the liquid fuel combustion device of the present invention is applied to an oil fan heater, FIG. 1 is a front view of the oil fan heater, and FIG. 2 is an explanatory diagram of the internal structure, Figure 3 is an explanatory diagram of the internal structure of a kerosene fan heater installed at an angle, Figure 4 is an explanatory diagram of the internal structure of a kerosene fan heater as another embodiment, and Figure 5 is an illustration of the interior of a kerosene fan heater installed at an angle. FIG. 6 is an explanatory diagram of the internal structure of a conventional oil fan heater. (4)...Burner (combustion part), (7)...Right oil pan, (8)...Right oil tank, (9)...Left oil pan, (1o)...Left oil supply Tank, (11)...
First pumping pipe, (lIA)... Suction port of first pumping pipe, (13)... Fuel pump, (1
4)...Second pumping pipe, (14A)...Second
Suction port of pumping pipe, (15)...Opening/closing valve,
(19) (20)...Float type on-off valve.

Claims (2)

[Claims] (1) A combustion section such as a burner, a fuel pump that supplies oil to this combustion section, first and second oil pans that store oil pumped up by this fuel pump, and replenishing oil to these oil pans. a first pumping pipe leading out from the first oil tank and a second pumping pipe leading out from the second oil tank communicating with each other on the upstream side of the fuel pump; A liquid fuel combustion device characterized in that at least one of the pumping pipes is provided with an on-off valve. (2) A combustion section such as a burner, a fuel pump that supplies oil to this combustion section, first and second oil pans that store oil pumped up by this fuel pump, and replenishing oil to these oil pans. a first pumping pipe leading out from the first oil tank and a second pumping pipe leading out from the second oil tank communicating with each other on the upstream side of the fuel pump; At the same time, in the first and second oil pans, as the oil level in these oil pans fluctuates, the first and second oil pans are filled.
A liquid fuel combustion device characterized by being provided with on-off valves that open and close the suction ports of the pumping pipes.