JP3024292B2 - Oil burner safety equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for an oil burning machine such as an oil heater or an oil fan heater, and relates to ensuring safety when gasoline or the like is erroneously used.

[0002]

2. Description of the Related Art In general, as shown in FIG. 5, a detachable cartridge tank 23 is mounted on an oil supply port 22 of a fixed tank 21 and a fixed liquid is supplied from the cartridge tank 23 into the fixed tank 21 as shown in FIG. Kerosene is charged so as to maintain the surface, and the kerosene is supplied to a combustion section (not shown) via a pump or a wick to be burned.

[0003]

However, if gasoline is accidentally charged into the above-described oil-fired machine and burned without the user noticing it, the fuel supply port 22 of the fixed tank 21 is not filled.
There was a danger that gasoline would overflow and ignite, causing a fire. That is, when the combustion is started, the temperature of the cartridge tank 23 rises due to the heat from the combustion part, and the gasoline in the cartridge tank 23 evaporates accordingly, and the pressure in the cartridge tank 23 rises.
Gasoline in the cartridge tank 23
The gas is forcibly fed into the tank and gasoline continues to enter the fixed tank 21 , and finally overflows from the refueling port 22 which is an opening.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to prevent a fire accident due to misuse of gasoline and to inform a user that fuel is running out.

[0005]

In order to achieve the above object, the present invention provides an apparatus body having a combustion section, a fixed tank open to the atmosphere provided in the apparatus body, and detachably attached to an oil supply port of the fixed tank. And a cartridge tank, which is disposed in the fixed tank and at least
And a fuel detecting means capable liquid level detection when mixed gasoline, lower Rutotomoni, than normal liquid level provided place on the first detection position below the filler opening is the fuel detecting means than normal liquid level above The second detection position is provided at an appropriate position, and the liquid level in the fixed tank rises above the normal liquid level and reaches the first detection position.
When it becomes abnormal, it is determined that there is an abnormality such as gasoline
Send a signal to stop combustion or issue an alarm,
The liquid level in the fixed tank falls below the normal liquid level and the second detection
When it reaches the out position, it judges that the fuel is running out and sends a signal to the control unit.
It is sent to alert .

[0006]

According to the present invention , the liquid in the fixed tank is constituted by the above structure.
When the level rises and falls below the normal
Since the baking is stopped or an alarm is issued,
For example, when gasoline is mixed in , the fuel detection means detects gasoline in the fixed tank before it overflows from the filler port and stops combustion or issues an alarm based on the detection signal. It is possible to prevent a fire accident and make sure that the fuel is running out.
To improve the usability by notifying the user.
And be able to.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a gasoline detection in one embodiment of the present invention.
FIG. 2 shows a state of the sensing operation, and FIG.
FIG. 3 is a control block diagram, and FIG.
Enlarge showing the safety device of oil combustor in one embodiment of Ming
It is sectional drawing. 1 to 4, reference numeral 1 denotes an apparatus main body, 2
Is a combustion part accommodated in the equipment main body 1, 3 is a fixed tank provided in the equipment main body 1, 4 is a filler port of the fixed tank 3,
Reference numeral 5 denotes a fueling pin protruding from the bottom surface of the fueling port 4, 6 denotes a cartridge tank detachably mounted on the fueling port 4, 7
Reference numeral denotes an oil supply cap having a valve mechanism provided in the cartridge tank 6. Numeral 8 denotes a fuel detecting means for detecting the liquid level of the fuel in the fixed tank 3 set in the fixed tank 3, and includes a liquid level B above the steady liquid level A and a liquid level C below.
It has a configuration having a detection position at a place. In this embodiment, a float switch is used. In the following description of the embodiment, a float switch will be used. Reference numeral 9 denotes a ring-shaped float that is movable up and down and has a specific gravity lower than that of gasoline constituting the float switch 8. Reference numeral 10 denotes a ring-shaped magnet provided inside the float 9. Reference numeral 11 denotes a position inside the float 9. A guide section 12 for guiding the inner surface of the float 9 up and down, and 12 is a switch provided inside the guide section 11 and operated by magnetism of the magnet 10 of the float 9,
The switch 12 is provided at a position corresponding to the liquid level B which can be detected before fuel overflows from the fuel supply port 4 of the fixed tank 3. A control unit 13 stops combustion or issues an alarm based on a signal detected by the switch 12, and sends a signal to a load 14 such as a combustion unit or an alarm device. Reference numeral 15 denotes a remaining fuel detection switch in the fixed tank 3.
Is consumed, and the float 9 moves below the steady liquid level A.
A switch that operates when the liquid level drops to the liquid level C.
3 to perform processing when fuel runs out by sending a detection signal
I have to. Note that, as described above, A is the fuel cap 7
In steady liquid level in a normal state is located in the vicinity of the tip, B is Ah detection liquid level when gasoline use switch 12 detects
C is the remaining fuel detection switch located below the steady liquid level A.
This is the remaining fuel detection liquid level detected by the fuel tank 15.

In the above configuration, first, gasoline is mixed.
Of the detection operation when the cartridge tank 6 is used
If the user mistakenly mounts the cartridge tank 6 containing gasoline on the fuel supply port 4 of the fixed tank 3, the fuel supply pin 5 pushes the valve mechanism of the fuel supply cap 7 and gasoline is supplied from the tip of the fuel supply cap 7. Is fixed tank 3
Flows into. When the liquid level of the gasoline that has flowed in reaches the tip of the refueling cap 7, the flow path is blocked, the pressures in the cartridge tank 6 and the fixed tank 3 are balanced, and gasoline inflow stops at the position of the steady liquid level A. However, when combustion starts here, the temperature of the cartridge tank 6 naturally rises because the temperature of the entire apparatus main body 1 rises due to the heat of the combustion section 2. When the temperature of the cartridge tank 6 rises, the temperature of gasoline in the cartridge tank 6 rises. Since gasoline is very easy to vaporize compared to kerosene, vaporization is promoted by a rise in temperature, and a large amount of vaporized gas is generated in the cartridge tank 6. The pressure in the cartridge tank 6 rises due to the generated vaporized gas, the pressure balance in the fixed tank 3 is broken, and the gasoline in the cartridge tank 6 is forcibly sent to the fixed tank 3, and the gas in the fixed tank 3 is removed. Gasoline level rises steadily. The rising liquid level raises the float 9 of the float switch 8 along the guide portion 11. The switch 12 operated by the magnetism of the magnet 10 of the float 9 that has risen detects the liquid level B before gasoline overflows from the oil supply port 4 of the fixed tank 3.
Since the detection signal is transmitted to the control unit 13 to stop the combustion or issue an alarm, a fire accident due to misuse of gasoline can be prevented.

[0009] The low have liquid level than the liquid level constant liquid level A in the fixed tank 3 there is no fuel in the cartridge tank 6
When it drops to C, float 9 descends and remains
The fuel detection switch 15 is operated, and an alarm is issued based on the signal. According to the configuration of this embodiment, it is possible to prevent fire caused by misuse of gasoline in one float switch, there is an effect that also can inform the user that the fuel is over eliminated.

[0010]

As described above, the safety device for an oil-fired machine according to the present invention usually has a detection position above and below the liquid level.
To provide a fuel detection means in a fixed tank
In a simple configuration Te, be burned using gasoline incorrectly user, the liquid level in the fixed tank be higher than the normal liquid level
If it is detected by the fuel detection means, the fuel is detected based on the detection signal.
Since the baking is stopped or an alarm is issued , gasoline in the fixed tank does not overflow from the filler port ,
It is possible to prevent fire accidents due to misuse of gasoline and use the fact that fuel is running low.
Because it can inform users, it is safe and easy to use
It is possible to provide a safety device for an oil-fired machine for improvement.
You.

[Brief description of the drawings]

FIG. 1 illustrates a gasoline detection operation according to an embodiment of the present invention.
Diagram showing status

FIG. 2 is a sectional view of an oil-fired machine according to one embodiment of the present invention .

FIG. 3 is a control block diagram of a safety device in the oil combustion machine.

FIG. 4 is an enlarged view showing a safety device for an oil combustor according to one embodiment of the present invention .

FIG. 5 is a cross-sectional view of a main part of a conventional oil burner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device main body 2 Combustion part 3 Fixed tank 4 Filler port 6 Cartridge tank 8 Fuel detection means (float switch) 10 Float 12 Switch 13 Control part

Claims (1)

(57) [Claims] 1. A device main body having a combustion section, a fixed tank open to the atmosphere provided in the device main body, a cartridge tank detachably attached to an oil supply port of the fixed tank, and disposed in the fixed tank. At least in the fixed tank
And a liquid level detection can fuel detecting means during mixing gasoline to, the fuel detecting means provided the first detection position in place below the fuel supply port than the normal liquid level in the upper Rutotomoni normally liquid surface A second detection position is provided at an appropriate position below, and the liquid level in the fixed tank rises above the normal liquid level and the first detection position
When the control unit is in
Send a signal to stop combustion or issue an alarm
The liquid level in the fixed tank falls below the normal liquid level and
When it reaches the detection position of
A safety device for an oil-fired machine that sends a signal and issues an alarm .