JP3880776B2 - Liquid fuel combustion equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid fuel combustion apparatus mounted on a heating device such as an oil fan heater, and more particularly to a fuel tank.
[0002]
[Prior art]
Conventionally, oil fan heaters have been widely used in ordinary homes as winter heating equipment. FIG. 21 is a partially omitted front sectional view schematically showing an example of a petroleum fan heater equipped with a conventional liquid fuel combustion apparatus, and FIG. 22 is a side sectional view thereof. FIG. 23 is a cross-sectional view of an oil supply cap and a receiving tool of an oil supply tank.
[0003]
As shown in FIG. 21, an oil supply tank 102 for injecting and storing liquid fuel 104 such as kerosene in advance is provided inside the oil fan heater main body 101. A sufficient amount of liquid fuel 104 is supplied to the fuel tank 103 connected downward.
[0004]
The liquid fuel 104 accommodated in the fuel tank 103 is guided to a vaporizer 107 via an oil feed pipe 106 by a fuel pressure feed electromagnetic pump 105. Here, the sent liquid fuel 104 is vaporized by a vaporizer heater (not shown) provided in the vaporizer 107. Reference numeral 109 denotes a combustion chamber, and a burner 108 is supported and fixed to the bottom of the combustion chamber.
[0005]
The fuel gas vaporized by the vaporizer 107 is jetted vigorously from the nozzle and burned together with the combustion air at the flame port 108a of the burner 108, and the air in the combustion chamber 109 is heated. Then, as indicated by an arrow A in FIG. 22, the air was sucked through the filter 112 by the blower fan 111 attached to the fan motor 110 configured by a single-phase induction motor or the like provided on the back surface of the main body 101. The room air is blown into the room from the air outlet 113 as warm air together with the air and combustion gas heated in the combustion chamber 109.
[0006]
On the other hand, the frame sensor 114 provided substantially above the flame outlet 108a detects a flame current due to the combustion flame. When a flame current exceeding a preset value is detected, the fan motor 110 is energized. The blower fan 111 rotates, and the air sucked from the room is blown into the room from the air outlet 113 as warm air.
[0007]
At this time, the room temperature thermistor 115 detects the room temperature, and a control device (not shown) controls the driving of the fuel pumping electromagnetic pump 105 based on the temperature difference between the room temperature and the set temperature. Thereby, the supply amount of the liquid fuel 104 to the vaporizer 107 is adjusted, and the thermal power of the combustion flame in the burner 108 is adjusted. For example, when the operation of the oil fan heater is started when the room temperature is low, the supply amount of the liquid fuel 104 to the vaporizer 107 is increased, the room temperature is rapidly raised to the set temperature, and once the temperature is raised to the set temperature, The supply amount of the liquid fuel 104 is adjusted so as to be constant at the temperature.
[0008]
In the fuel tank 102, as shown in FIG. 23, a cap 116 for replenishing the liquid fuel 104 is provided at a position on the fuel tank 103 side when mounted on the main body 101, and on the opposite side is a port for carrying. A handle 118 is rotatably attached. An oil supply cap 117 having a valve mechanism is screwed onto the base 116.
[0009]
When refueling the refueling tank 102, take out the refueling tank 102 by holding the handle 118, turn it upside down so that the refueling cap 117 is up, remove the refueling cap 117, and remove fuel from the base 116. After injecting and confirming that the fuel has been supplied to the fuel tank 102, the fuel cap 117 is tightened to the screw portion of the base 116, and the fuel cap 117 is turned over so that the fuel cap 117 is positioned downward, and inserted into the main body 101. The fuel supply cap 117 is inserted into the receiving member 119 attached to the upper surface of the fuel tank 103 and placed on the fuel tank 103.
[0010]
[Problems to be solved by the invention]
By the way, in the oil fan heater equipped with the above-described prior art liquid fuel combustion device, when refueling the fuel tank, take out from the oil fan heater body, turn the fuel tank upside down and the base part upward, After the oil is supplied, the oil supply cap is tightened and inserted into the main body, so it is necessary to reverse the oil supply tank up and down again, which is cumbersome to handle.
[0011]
In addition, the cap of the fuel cap is tightened with the cap and the screw, and there is a problem that when the fuel tank is turned upside down due to insufficient tightening of the cap, the cap is removed and fuel flows out. It was.
[0012]
Also, when fuel is supplied to the fuel tank, the oil level rises to the valve part of the fuel cap, and the fuel in the fuel tank is supplied while maintaining the constant oil level by air replacement. When the fueling cap is removed when the fuel cap is removed, there is a problem that the fuel adheres to the hand and slips when the screw is tightened, and at the same time, the hand smells and becomes dirty.
[0013]
Furthermore, in the case where the oil supply tank supplies oil while being stored in the oil fan heater body, there is a problem that fuel spills into the oil fan heater body.
[0014]
Therefore, the present invention does not turn the fuel tank upside down when refueling the fuel tank, so that fuel can be replenished without the fuel sticking to the hand and without getting dirty. It is an object of the present invention to provide a liquid fuel combustion apparatus having a fuel tank that makes it impossible to supply fuel to the fuel tank when stored.
[0015]
[Means for Solving the Problems]
To achieve the above object, according to the present invention, there is provided a liquid fuel combustion apparatus in which an oil supply tank having an oil supply port and its closing means is detachably accommodated in a tank accommodating chamber of the apparatus body. In the mounted state, an oil filler opening prevention means for preventing the release of the closing means is provided so that the oil cannot be supplied unless the oil tank is taken out from the main body.
[0016]
In this case, as a fueling method, as long as the fueling port of the fueling tank is arranged at the upper part with the main body mounted, a fuel tank is provided below the fueling tank, and an indirect fueling method of supplying fuel to the combustion section through the fuel tank, or The present invention can be applied to any of the direct fuel supply systems in which fuel is directly supplied from the fuel tank to the combustion section, but it is preferable to adopt the direct combustion system.
[0017]
Various modes can be adopted as the fuel filler opening prevention means. As the first blocking means, a part of the upper surface and the side surface of the fuel tank is an inclined surface, and an oil supply port is disposed on the inclined surface, and the closing means is released by the inclined surface and the wall surface of the tank storage chamber when the body is mounted. An example of the configuration for blocking, that is, a configuration in which the space sandwiched between the inclined surface and the wall surface of the tank storage chamber does not lead to the release of the closing means from the fuel filler port.
[0018]
This inclined surface is not only an inclined surface formed over the upper surface of the fuel tank and a part of one side surface, but also an inclined surface formed at a predetermined angle between the upper surface of the oil tank and two side surfaces adjacent to the upper surface. It may be.
[0019]
As the second fuel filler opening prevention means, a structure in which the fuel filler is disposed above the side surface of the tank and the release of the closing means is prevented by the tank side face and the wall surface of the tank storage chamber when the fuel tank body is mounted, that is, the tank side face A configuration in which the space sandwiched between the tank storage chamber and the wall surface of the tank storage chamber does not release the closing means from the fuel filler port can be exemplified.
[0020]
An example of the third fuel filler opening prevention means is a configuration in which a fuel filler opening is disposed on the upper surface of the tank, and a restricting member that restricts the release of the closing means in a state where the tank is mounted.
[0021]
The regulating member may be installed either on the tank side or on the wall surface of the tank storage chamber, but it is desirable that the regulating member be manually released when the fuel tank is attached to the main body. For example, there is a mode in which the regulation member restrains the closing means by a solenoid or the like by detecting the mounting of the main body of the fuel tank. Further, in the case of the method in which the closing means pivots and opens with respect to the fuel filler port, the turning fulcrum of the closing means is arranged on the wall surface side of the tank housing chamber, and the regulating member is arranged on the outer end side than that, while the tank When the wall surface of the storage chamber is retracted to the side to form a stepped portion that faces the restricting member, the restricting member abuts the stepped portion and prevents the opening when the closing means is rotated and opened when the main body is mounted. You may comprise.
[0022]
In addition, as a closing means, the structure using the cap screwed to the nozzle | cap | die of a fuel filler opening, as mentioned above, the fixed board integrated with the fuel filler mouth, and the movable supported by this fixed board so that rotation opening and closing is possible. The structure provided with the board, the cover member with a packing which is provided in this movable plate and closes an oil supply port, and the latching means which hold | maintains a movable plate in an oil supply port closed attitude | position can be illustrated.
[0023]
The locking means is disposed on the open end side opposite to the rotation fulcrum of the movable plate, and has a locking lever with a locking portion rotatably supported by one of the movable plate and the fixed plate, A latch receiving portion provided on the other of the movable plate and the fixed plate and a latch lever are engaged with the latch receiving portion so that the movable plate is held in a closed position by engaging with the stopper. The structure provided with the lever spring urged | biased in the direction to unite can be illustrated.
[0024]
When this locking means is arranged on the wall surface side of the tank storage chamber, as the fuel filler opening prevention means, a part of the locking lever is extended, and when the fuel tank is attached to the main body, The structure which prevents rotation release of a latching lever by contact | abutting with the wall surface of a tank storage chamber can be illustrated.
[0025]
Each of the fuel filler opening prevention means can be configured singly or in combination. For example, the configuration of the inclined surface which is the first blocking means and the configuration of the extending portion or the regulating member in the rotary closing means provided with the locking means are organically combined to reliably release the closing means. It is possible to prevent.
[0026]
The fuel tank having the above-described configuration may be provided with a means for detecting that the fuel tank is attached to the apparatus main body and confirming the means.
[0027]
Further, a means for detecting the liquid level of the fuel in the tank by providing means for detecting the liquid level of the fuel in the tank can be added. In this case, when a drain hole is formed in the bottom surface of the fuel tank, the liquid level detection means is configured to be arranged on a lid member that opens and closes the drain hole, or a suction pipe that sucks up fuel in the fuel tank Any of the configurations arranged in the lower part of can be adopted.
[0028]
DETAILED DESCRIPTION OF THE INVENTION
[First Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic front view of a petroleum fan heater equipped with a liquid fuel combustion apparatus according to the present invention, and FIG. 2 is a schematic view of the liquid fuel combustion apparatus.
[0029]
The oil fan heater body 1 includes a front plate 2 detachably provided, a top plate 3 formed integrally with the side surface, an operation unit 4 for operating operation, a blowout port 5 for blowing warm air, a ceiling An openable and closable lid 7 is provided on the right side of the upper surface of the plate 3 to allow the fuel tank 6 to be taken in and out, and is mounted and fixed to a table 8 that receives liquid fuel in the unlikely event.
[0030]
As shown in FIG. 1 or FIG. 2, the main body 1 has a detachable fuel tank 6 for temporarily storing fuel, a pipe for sucking up fuel in the fuel tank 6, and a valve for opening and closing the passage. From the fuel supply joint 9, the fuel supply joint receiver 10 that receives the valve of the fuel supply joint 9, the tank guide 11 to which the fuel supply joint receiver 10 is attached, the vaporizer 12 that vaporizes the fuel from the fuel supply tank 6, and the fuel supply tank 6 An electromagnetic pump 13 that sends fuel to the carburetor 12, a burner 14 that mixes and burns the fuel gas vaporized by the carburetor 12 and primary combustion air, a combustion chamber 15 that surrounds the burner 14 that burns, and the burner 14 and combustion A partition plate 16 that partitions the chamber 15, a burner box 17 that houses the burner 14, a heat pipe 18 that stores unburned gas from the vaporizer 12, and the vaporizer 12 Includes a cooling fin 19 for cooling the unburned gas between the heat pipe 18, an air valve 20 for sending air to block the fuel and oil supply joint receiving 10 and electromagnetic pump 13.
[0031]
As shown in FIG. 3, the fuel tank 6 is detachably accommodated in a tank accommodating chamber 500 defined by the side wall of the main body and the tank guide 11, and is filled with fuel. Therefore, a handle 21 attached to the upper surface of the vertical rectangular parallelepiped tank body, an oil meter 23 disposed on the surface close to the fuel filler port for visually confirming the state of fuel supply, and the fuel in the fuel tank 6 A refueling joint 9 installed on the upper surface on which a handle 21 is provided, and a refueling refueling port 28 disposed on an inclined surface 501 formed between the upper surface and the side surface of the fuel tank 6, An oil supply cap 22 with a pressure valve with a pressure relief valve mechanism for opening and closing the oil supply port 28 is provided.
[0032]
The oil supply joint 9 is a connecting means for connecting to the oil supply path of the main body 1 when the oil supply tank 6 is inserted into the tank housing chamber 500 of the main body 1. The suction pipe 25 is configured to suck up the fuel in the tank 6.
[0033]
In order to replenish the fuel in the fuel tank 6, if the fuel tank 6 is not taken out from the main body 1 and the fuel is not replenished, the fuel overflows when the fuel is replenished with the fuel tank 6 inserted into the main body 1. Since there is a possibility of spreading to a fire, the fuel tank 6 is structured so that fuel cannot be supplied unless the fuel tank 6 is taken out from the main body 1.
[0034]
As shown in FIGS. 3 and 4, the structure of the oil tank 6 in the present embodiment includes an upper surface 26 on which the handle 21 of the oil tank 6 is disposed and a side surface 27 on which the oil amount meter 23 of the oil tank 6 is provided. An inclined surface 501 is formed by obliquely connecting a certain surface, and an oil supply port 28 is provided on the inclined surface 501, and the surface 501 provided with the oil supply port 28 is in a state where the lid 7 of the main body 1 is opened. The oil supply cap 22 with the pressure valve screwed into the oil supply port 28 has a shape set at an angle at which it cannot be opened. That is, as shown in FIG. 4B, the space sandwiched between the inclined surface 501 and the wall surface of the tank guide 11 of the tank storage chamber 500 does not release the oil filler cap 22 as the closing means from the oil filler port 28. The size of the cap 22 is such that the head of the cap 22 abuts against the wall surface of the tank guide 11 when released.
[0035]
The angle at which the oil supply cap 22 with the pressure valve screwed into the oil supply port 28 cannot be opened differs depending on the size of the opening surface of the lid 7 and the positional relationship between the tank guide 11 covering the periphery of the oil supply tank 6, but the oil supply tank 6 is provided with a gradient of at least 30 degrees downward from the upper surface of the surface on which the handle 21 is provided.
[0036]
With the above configuration, the oil supply cap 22 with the pressure valve that is screwed into the oil supply port 28 of the oil supply tank 6 cannot be opened with the oil supply tank 6 inserted into the main body 1. Therefore, there is no risk of fuel leakage into the main body 1 when the fuel tank is refueled.
[0037]
As shown in FIG. 5, the valve mechanism 24 of the oil supply joint 9, which is a means for connecting the oil supply path when the main body of the oil supply tank 6 is mounted, can be freely attached and detached to a valve seat around the valve hole formed below the valve box. Thus, a reverse conical valve body 33 having a projecting rod 33a protruding through the valve hole at the lower end and a circle fitted into the conical closing surface of the valve body 33 to close the valve seat. A circumferential O-ring packing 34 and a spring 35 that urges the valve body 33 in the valve closing direction are provided.
[0038]
The coil-shaped valve body spring 35 is interposed between the valve body 33 and a lid nut 37 fitted into the upper opening of the valve box via a seal packing 36. The periphery of the valve hole below the valve box protrudes downward, and an O-ring 38 that seals the oil supply joint receiver 10 is fitted around the protrusion, and the unburned gas from the carburetor 12 is inserted around the outer periphery. Is formed in the return passage 40 for returning to the fuel tank 6.
[0039]
A passage 39 that sucks up fuel from the fuel tank 6 is formed on the upstream side of the valve mechanism 24, and unburned gas from the carburetor 12 is liquefied along with the suction passage 39 and returns to the fuel tank 6. A return passage 40 is formed. On the surface where the fuel supply joint 9 is connected to the fuel supply tank 6, the mounting insertion hole 41 of the suction pipe 25 from the fuel supply tank 6, the insertion hole 42 which is the return port of the return fuel from the vaporizer, and the fuel supply joint 9 A mounting hole 43 for screwing the lower part to the fuel tank is formed. The oil supply joint 9 is fixed to the oil supply tank 6 with a screw through a rubber packing 447.
[0040]
A suction pipe 25 that sucks up fuel from the fuel tank 6 is connected to a passage 39 that flows from the upstream side of the valve mechanism 24 of the fuel joint 9. The suction pipe 25 reaches near the bottom surface on the side opposite to the handle 21 of the fuel tank 6, and a filter 45 that does not allow water or dust to pass through is provided at the suction port 444 at the tip thereof. The suction port 444 may be provided on a side surface other than the bottom surface of the suction pipe 25.
[0041]
Furthermore, as shown in FIG. 6, means for detecting the remaining oil in the fuel tank 6 is provided in the vicinity of the suction port 444. This detection means includes a float 46 having a built-in magnet 504 that functions as a detected portion, and a reed switch 448 provided to face the float 46. The float 46 is externally fitted to a cylindrical suction port body 47 that is externally fitted and fixed to the lower end portion of the suction pipe 25 so as to be movable up and down by fuel fluctuations, and the fuel inside the fuel tank 6 is constant. When the liquid level is reached, the magnet 504 of the float 46 senses the reed switch 448 built in the main body of the suction port, and transmits the operation to the operation unit 4 so that a notice such as running out of fuel can be made. Yes.
[0042]
As shown in FIG. 7, the oil cap 22 with a pressure valve includes a cap 48 that fits into a base of an oil supply port 28 that is screwed to the outside provided on the oil tank 6 side, and a pressure valve mechanism 49. The oil supply port 28 is screwed through a rubber packing 50. The cap 48 is formed with a pressure release hole 51 for releasing pressure on the top surface, the side surface is threaded, and the end is curled. The rubber packing 50 serves to seal between the oil filler 28 and the cap 48, and a pressure release hole 52 for releasing pressure is formed at the center. The pressure valve mechanism 49 includes a valve body 53 disposed in a space between the rubber packing 50 and the top surface of the cap 48, and a spring 54 that urges the valve body 53 in the valve closing direction of the pressure relief hole 52. It consists of and. In addition, holes 97 and 98 having a diameter of 1.5 mm or less are provided on the top surfaces of the rubber packing 50 and the cap 48 in order to prevent the fuel tank from becoming negative pressure. The holes 97 and 98 may be provided on the upper surface of the fuel tank.
[0043]
There is an oil supply joint receiver 10 on the lower side of the valve mechanism 24 of the oil supply joint 9 in a state where the main body of the oil supply tank 6 is mounted. As shown in FIG. 8, the fuel supply joint receiver 10 includes a valve receiver 55 that receives the valve body 33 of the valve mechanism 24 of the fuel supply joint 9 and a receiver body 56.
[0044]
The valve receiver 55 is provided with a valve receiving portion 57 that receives the valve element 33 of the valve mechanism 24 of the fuel supply joint 9 and a lattice hole 58 in which a passage through which fuel flows is formed in a lattice shape. The receiving body 56 includes a sealing surface 59 that seals with the valve mechanism 24 of the fuel supply joint 9, a storage portion 60 for the valve receiver, a passage 61 that connects the lattice hole 58 of the valve receiver 55 to the electromagnetic pump 13, and a passage therefor. A passage 62 to the T-shaped air valve 20 is provided from the middle. An annular concave groove 63 is provided around the valve receiver 55, and a passage 64 to the heat pump 18 is provided in the concave groove 63, so that a liquefied residual gas from the heat pump 18 returns. . In addition, the threading process is given to the fitting part of the nut which fixes the oil-feeding pipe which connects another part to the exit 3 places of each channel | path.
[0045]
The oil supply joint receiver 10 has an annular groove 65 outside the concave groove 63, and a cylindrical bellows-like packing 66 is attached to the groove 65. When the oil supply tank 6 is set in the main body 1, the oil supply joint 9 The valve mechanism 24 is mounted at a predetermined position of the oil supply joint receiver 10, the O-ring 38 outside the valve mechanism portion 24 is sealed by the seal surface 59 of the valve receiver body 56 of the oil supply joint receiver 10, and the oil supply joint receiver 10 The fuel supply joint 9 is sealed by the bellows-shaped packing 66 and is in a sealed state.
[0046]
As shown in FIG. 2, the air valve 20 is provided to shut off the fuel in the oil supply path from the oil supply tank 6 to the electromagnetic pump 13, and is connected to the electromagnetic pump 13 of the receiving body 56 of the oil supply joint receiver 10. A path that leads to the air valve 20 from a path 62 separated in a T shape is provided in the middle of the path 61, and the path 62 is disposed above the liquid level when the oil tank 6 is full. The air valve 20 is set to a closed state during operation, and is set to an open state when stopped. And it plays the role for sending air to the oil feeding path from the fuel supply joint receiver 10 to the electromagnetic pump 13 and shutting off the fuel. In addition, the air valve 20 is opened when the vaporizer 12 is cleaned by air, and air is sent to the vaporizer 12 by driving the electromagnetic pump 13.
[0047]
As shown in FIG. 9, the vaporizer 12 includes a vaporizing element 67 that heats and vaporizes the fuel, a nozzle 68 that ejects the fuel gas that has become a gas in the vaporizing element 67, and a needle 69 that opens and closes a hole in the nozzle 68. A solenoid valve 70 using electricity for moving the needle 69, a fuel inlet 71 for supplying fuel to the vaporizing element 67, a return port 72 for sending fuel gas inside the vaporizer 12 when operation is stopped, and combustion of the burner 14 And a heat recovery unit 773 that recovers heat.
[0048]
The vaporizing element 67 is obtained by sintering fine ceramic particles into a cylindrical shape, and tar components generated when the fuel is vaporized are deposited from the surface of the vaporizing element 67 toward the inside. The fuel inlet 71 of the carburetor 12 has a double pipe structure in which a stainless pipe 73 is disposed on the outside and a copper pipe 74 is disposed on the inside. By reducing the heat conduction from the carburetor 12, The temperature rise of the fuel entering the vaporizer 12 is suppressed. The diameter of the stainless pipe 73 is set to be larger than that of the copper pipe 74, and the heat conduction is further reduced by setting the tip of the copper pipe 74 to a position outside the vaporizer 12.
[0049]
The solenoid valve 70 includes an electromagnetic coil 75, a movable piece 76, an adsorption piece 77, and a pressing spring 78. When the electromagnetic coil 75 is energized or de-energized, the movable piece 76 is adsorbed to the adsorption piece 77. Alternatively, the hole 69 of the nozzle 68 of the vaporizer 12 is opened or closed when the needle 69 attached to the movable piece 76 moves away.
[0050]
The burner 14 includes a mixing pipe 79 that mixes the combustion gas vaporized by the carburetor 12 and the primary combustion air, and a flame port 80 that burns the mixed combustion gas.
[0051]
The electromagnetic pump 13 is a pump that feeds fuel, and prevents air contamination by disposing the suction side downward and the discharge side upward.
[0052]
As shown in FIG. 10, in the heat pipe 18, a fuel gas inlet 82 from the vaporizer 12 is formed on the side surface of the container main body 81, and a fuel gas outlet 83 is provided on the upper surface of the container main body 81. Is constructed by inserting a pipe 84 formed with a trumpet-shaped mouth 85 to the vicinity of the inner bottom surface of the container body 81. When the electromagnetic pump 13 is stopped by the room temperature control from the start to the stop of operation, the nozzle 68 of the vaporizer 12 is closed, and the residual gas in the vaporizer 12 flows to the heat pipe 18 and is liquefied. It is returned to the fuel tank 6. The return amount of the residual gas is 0.3-0. When the oil fan heater is operated for one day, the number of times that the electromagnetic pump 13 stops is about 10 times, so the volume of the container body 81 is set to about 20 CC.
[0053]
Further, cooling fins 19 for radiating the heat of the unburned gas returning from the vaporizer 12 are provided in the middle of the path connecting the vaporizer 12 and the heat pump 18. As shown in FIG. 11, the cooling fin 19 includes a pipe 87 and a thin fin 86 provided outside the pipe 87.
[0054]
Further, as shown in FIG. 2, the oil supply joint receiver 10 and the electromagnetic pump 13, the electromagnetic pump 13 and the vaporizer 12, the vaporizer 12 and the cooling fin 19, the cooling fin 19 and the heat pipe 18, and the heat pipe 18 and the oil supply joint receiver 10. The oil feeding pipes 88, 89, 90, 91, 92, 93 connecting the air valve 20 and the oil supply joint receiver 10 are made of copper pipe. In addition, piping from resin other than a copper pipe may be used from the oil supply tank 6 to the electromagnetic pump 13.
[0055]
As shown in FIGS. 3 and 4, the surface 29 opposite to the surface 26 on which the handle 21 of the fuel tank 6 is disposed is detected as means for detecting that the main body 1 is mounted. On the other hand, when the detection unit of the reed switch 32 is provided in the oil tank receiver 31 of the main body facing the detected part of the oil tank 6, and the oil tank 6 is inserted into the main body 1, The tank detecting means comprising the magnet 30 and the reed switch 32 can detect and start operation.
[0056]
The operation of the above configuration will be described. Open the lid 7 of the main body 1 and take out the empty oil tank 6 by holding the handle 21 of the oil tank 6, loosen and remove the oil valve cap 22 with the pressure valve while the handle 21 is on the upper side, and the oil tank 6. The fuel is supplied from the oil supply port 28.
[0057]
When the refueling is completed, the lid 7 of the main body 1 is opened and the fuel tank 6 filled with fuel is set in the tank housing chamber 500. When the fuel tank 6 is attached to the main body, the reed switch 32 provided in the main body portion is operated by the magnet 30 on the bottom surface of the tank, and it is determined that the tank 6 is attached to the main body.
[0058]
When the valve body 33 of the valve mechanism 24 of the oil supply joint 9 presses the valve receiving portion 57 of the oil supply joint receiver 10 when the oil supply tank 6 is mounted, the valve element 33 moves upward and is energized. 35 is compressed, and a gap is formed between the O-ring packing 34 on the closing surface of the valve body 33 and the valve seat, and a path through which fuel flows to the electromagnetic pump 13 side is formed through this gap.
[0059]
When the operation switch (not shown) of the oil fan heater is operated to turn on the power, the vaporizer 12 is heated by the vaporizer heater (not shown) attached to the vaporizer 12. At this time, the temperature of the vaporizer 12 is detected by a vaporizer thermistor (not shown), and when the vaporizer 12 is heated to a predetermined temperature, the electromagnetic pump 13 is driven and the liquid fuel in the fuel tank 6 is discharged. It sucks up through the suction pipe 25 and is sent to the vaporizer 12 through the oil supply joint 9 and the oil supply joint receiver 10.
[0060]
The liquid fuel is gasified by the heated carburetor 12 and blown out from the flame port 80 of the burner 14, ignited in the flame port 80 and burned in the combustion chamber. At this time, the control device (not shown) controls the drive of the electromagnetic pump 13 based on the difference between the room temperature detected by the room temperature thermistor and the set temperature set from the operation unit, and determines the amount of liquid fuel sent to the vaporizer 12. By changing, the calorific value by combustion is adjusted appropriately.
[0061]
When combustion starts and a flame current greater than or equal to a preset current value is detected by the frame sensor, the fan motor is energized, the blower fan is rotated, and the room air is sucked. The rotational speed of the blower fan is controlled by the control device. The sucked indoor air takes the radiant heat obtained in the combustion chamber 15 and is blown out together with the combustion gas as warm air from the outlet 5 to the outside of the main body 1 (inside the room), thereby raising the room temperature.
[0062]
Next, when the operation of the main body 1 is stopped, the driving of the electromagnetic pump 13 is stopped and the energization of the vaporizer heater is stopped. At the same time, the energization of the solenoid valve 70 is turned off, the movable piece 76 and the suction piece 77 are opened, and the hole portion of the re-nozzle 68 is closed by the needle 69 attached to the suction piece 77. The unburned gas remaining inside the vaporizer 12 passes through the clearance between the main body of the solenoid valve 70 and the needle 69 and is stored in the heat pump 18 via the oil feeding pipes 90 and 91. It is done.
[0063]
Further, the unburned gas having a high temperature is radiated by the cooling fins 19 provided in the middle of the oil feeding pipe 90 and the oil feeding pipe 91 and is sent to the heat pipe 18 at a low temperature. The unburned gas in the heat pipe 18 is in a gaseous state when it is sent, but as time passes, the temperature decreases and changes from gas to liquid.
[0064]
That is, when the operation is stopped or the combustion is turned off by room temperature control, the energization of the solenoid valve 70 is turned off, and the movable piece 76 of the solenoid valve 70 is released from the suction piece 77 and attached to the suction piece 77. When the hole of the nozzle 68 of the carburetor 12 is closed by the needle 69, the unburned gas remaining inside the carburetor 12 passes through the clearance between the main body of the solenoid valve 70 and the needle 69. Passed and sent to the heat pump 18 via pipes 88 and 89 that are oil feeding pipes.
[0065]
Further, at the time of ignition, the nozzle 68 is closed for 1 to 2 minutes from the time when the temperature of the fuel is raised in the carburetor 12 to change from liquid to gas and the fuel gas is ejected from the nozzle 68. Is blocked, the internal pressure of the vaporizer 12 is about 0. 0. The pressure is increased to 2 kg / cm, and the pressure is applied to the inside of the heat pipe 18 via the oil feeding pipes 90 and 91.
[0066]
Then, pressure is applied to the surface of the fuel gas that has become a liquid in the container 81 of the heat pipe 18, and the liquid level is pushed down so that the liquid is discharged from the trumpet-shaped mouth 85 at the lower end of the pipe 84 provided inside the heat pipe 18. The fuel gas thus formed is fed and refueled via the oil feed pipe 92 to the receiving body 56 of the fuel supply joint receiver 10, via the passage 64, via the concave groove 63, and via the return passage 40 of the fuel supply joint 9. It is sent to the tank 6 and stored.
[0067]
When refueling the fuel tank 6, the fuel tank 6 is extracted from the main body 1 and fuel is supplied from another container outside the main body. At this time, the fuel tank 6 is placed on a flat surface with the handle 21 facing upward. Then, the oil cap 22 with the pressure valve on the surface with the handle 21 is loosened and removed, and the fuel is supplied from the oil supply port 28 of the oil supply tank 6 using an oil supply pump.
[0068]
In this way, when refueling the fuel tank 6, the fuel can be replenished without the fuel tank 6 being turned upside down and without the fuel cap of the fuel tank 6 being contaminated with the fuel.
[0069]
In a state where the fuel tank 6 is set in the main body, the fuel filler port 28 is disposed on the inclined surface 501, and even if the fuel cap 22 is opened, the cap cannot be opened by touching the tank guide 11 of the main body. Refueling is prevented when the main unit is mounted, ensuring safety.
[0070]
[Second Embodiment]
FIG. 13 shows the structure of an oil supply tank according to the second embodiment. The oil supply port 152 is provided on one side of the oil supply tank 6 where the oil amount meter 23 is provided, and the oil supply camp 22 with a pressure valve cannot be opened when the lid 7 is opened. Has been.
[0071]
With this structure, fuel cannot be supplied unless the fuel tank is taken out of the main body, so that fuel spillage during refueling into the main body 1 can be prevented.
[0072]
Further, on the surface 153 opposite to the surface on which the tank handle 21 is disposed, a float level inch 154 at a liquid surface level is disposed as a means for detecting residual fuel in the fuel tank 6. . The float switch 154 is attached to a lid 155 that opens and closes a drain hole for draining water accumulated in the fuel tank 6, and when the fuel inside the fuel tank 6 reaches a certain liquid level, the float switch 154 Operates to notify the operation unit of the main body of the display such as running out of fuel. Other configurations and operations are the same as those in the first embodiment.
[0073]
[Third Embodiment]
14 and 15 show the structure of the oil tank according to the third embodiment. An oil supply port 28 and a handle 21 are provided on the upper surface of the oil supply tank 6, and the handle 21 is supported by the oil supply tank so as to be able to swing up and down. After the oil supply tank 6 is inserted into the main body 1, A metal fitting 183 for holding the screwed oil cap with pressure valve 22 is attached to the handle 21. Furthermore, on the side of the oil supply port 28 on the wall surface of the tank housing chamber, there are a metal fitting 181 and an electromagnetic coil for preventing rotation of the handle 21 and the metal fitting 183 in the handle lying down state after the oil supply tank 6 is inserted into the main body 1. A solenoid 182 is provided.
[0074]
Specifically, when the fuel tank 6 is inserted into the main body 1 and the handle 21 is tilted toward the fuel inlet 28 to close the lid 7, the tank detecting means detects that the fuel tank 6 has been inserted into the main body 1, and the electromagnetic coil The blocking metal fitting 181 that is energized and attached to the solenoid 182 moves to the fuel tank 6 side, and the metal fitting 183 that holds the oil cap with pressure valve 22 of the fuel tank 6 is pressed from above.
[0075]
As a result, the oil cap 22 with the pressure valve screwed into the oil supply port 28 of the oil tank 6 cannot be opened in the state of being inserted into the main body 1, so that the oil cannot be supplied unless the oil tank is taken out from the main body. Fuel spillage during refueling can be prevented.
[0076]
The tank detection means includes a magnet 30 and a reed switch 32 as in the first embodiment. When the fuel tank 6 is inserted into the main body 1, the insertion of the fuel tank is detected and the operation can be started. It is said.
[0077]
[Fourth Embodiment]
FIGS. 16 to 18 are views showing a fourth embodiment, FIG. 16 is a perspective view of a fuel tank, FIG. 17 is a cross-sectional view of a fuel filler port when the fuel tank is mounted, and FIG. 18 is a main body take-out of the fuel tank. It is sectional drawing of the oil filler opening part in a state.
[0078]
As shown in the figure, the oil supply tank 6 is formed with an inclined surface 501 having a predetermined angle with a gradient of at least 30 degrees downward from the upper surface of the tank between the upper surface and two side surfaces adjacent to the upper surface. An oil supply port 28 is disposed at 501.
[0079]
The fuel filler port 28 is closed by a rotating lid member. That is, the closing means 600 of the fuel filler port 28 includes a fixing plate 601 that has a hole that fits into the fuel filler port 28 and is spot welded to the inclined surface 501, and a standing piece on the upper handle side of the fixing plate 601. A movable plate 603 that is supported by the movable plate 602 so as to be pivotable to be opened and closed, a lid member 605 with packing 604 that is disposed on the inner surface side of the movable plate 603 and closes the base 28a of the fuel filler port 28, and A coiled spring member 606 that is interposed between the inner surface and presses the lid member 605 to the base 28a side of the fuel filler port 28, and a locking means 607 that holds the movable plate 603 in a closed position of the fuel filler port.
[0080]
The fixed plate 601 extends from the inclined surface 501 to the upper surface of the tank, and a bearing portion 623 that supports the lower end leg portion of the handle 21 so as to be able to swing up and down is formed in the extended portion. The movable plate 603 has a rotation fulcrum 611 on the handle side, and a locking means 607 is disposed on the open end side. Even when the movable plate 603 is to be opened when the main body is mounted, the open end is the tank guide 11. The length of the movable plate is set so that it cannot be released by abutting against.
[0081]
The lid member 605 is formed in a deep dish shape, and its outer end flange 608 cannot be removed by an annular stopper member 610 formed on the inner surface of the movable plate 603 and is movable in a direction perpendicular to the plate surface of the movable plate. It is locked to. The packing 604 is an annular member fitted to the outer peripheral portion of the center projecting portion of the lid member, and is pressed against the upper end edge of the base 28a. The spring member 606 is disposed in the internal space between the movable plate 603 and the lid member 605.
[0082]
The locking means 607 is disposed on the open end side of the movable plate 603 opposite to the rotation fulcrum 611, that is, on the lower end side of the inclined surface 501 and on the tank guide 11 side of the tank storage chamber. The movable plate 603 is brought into a closed position by engaging with a locking lever 615 with a pin-shaped locking portion 614 supported on the open end side of the movable plate so as to be rotatable around the shaft 613 and the locking portion 614. A hook-shaped latch receiving portion 616 provided on the fixing plate 601 to hold the lever 615 and a lever spring 617 that biases the lever 615 in a direction in which the latch portion 614 engages with the latch receiving portion 616 are provided.
[0083]
The lever spring 617 is wound around the rotation shaft 618 of the locking lever 615, one end is locked by the cut and raised piece 619 of the locking lever, and the other end is locked by the stopper member 610 of the movable plate 603. These spring members are arranged on the inner surface side of the locking lever 615 and are configured to urge the locking lever 615 outward from the movable plate 603. The reason for not using the spring member in the rotating fulcrum 611 portion of the movable plate 603 is that the movable plate 603 jumps above the fuel tank 6 and rotates when the locking state of the locking lever 615 is released. In order to prevent this, unsafeness such as injury is eliminated.
[0084]
The latch receiving portion 616 has a space that allows the latch portion 614 to intervene between the side wall of the cap 28a and is open to the cap 28a side. It has become a mode to lock.
[0085]
The locking lever 615 is formed in a triangular shape by extending a part of the outer end side thereof, and the rear surface of the locking lever 615 is opposed to the tank guide 11 in the locking posture of the locking lever 615. A slight gap is formed that makes it impossible to insert a finger for release. When the locking lever 615 is locked, it does not protrude outward from the tank side surface. The portion 620 and the wall surface 11 of the tank storage chamber are in contact with each other, and the rotation release of the locking lever 615 is prevented.
[0086]
In the above configuration, when the locking lever 615 is pushed toward the base while the locking lever 615 is locked, the locking portion 613 is detached from the locking receiving portion 616, and the locking of the closing means 600 is released. When the tank 6 is mounted on the main body, the oil filler opening is provided on the inclined surface 501 and the extending portion 620 is provided on the locking lever 615. Therefore, the locking lever 615 is movable even if the locking lever 615 is rotated and released. Since the cover 603 is hidden and the back surface of the locking lever 615 faces the wall surface of the tank housing chamber, the locking lever 615 cannot be released because the hand cannot be put into the gap.
[0087]
Even if the release member is forcibly inserted into the gap between the lock lever 615 and the tank guide 11 to release the lock lever 615, the extended portion 620 of the lock lever 615 is released. And the open end 603a of the movable plate 603 comes into contact with the wall surface (tank guide) 11 of the tank storage chamber, and the release of the movable plate 603 is prevented. Therefore, if the fuel tank 6 is not taken out from the main body, it becomes impossible to supply fuel, and it is possible to prevent fuel spillage during refueling into the main body 1.
[0088]
Since other configurations and operations are the same as those of the first embodiment, description thereof is omitted. In the above-described embodiment, an example in which the locking lever is disposed on the movable plate side is shown, but a configuration in which the locking lever is disposed on the fixed plate side may be employed.
[0089]
[Fifth Embodiment]
FIG. 19 is a cross-sectional view of a fuel filler port portion showing a fifth embodiment. The present embodiment is the same as the fourth embodiment in that the rotary closing means and the locking means 607 are provided on the inclined surface 501, but the open end side is disposed on the center side of the tank, and the rotation is performed. Unlike the fourth embodiment, the fulcrum 611 is disposed on the tank guide 11 side, and a restricting member 625 that prevents the closing means from being opened when the main body of the tank is mounted is provided outside the pivot fulcrum 611 of the movable plate. To do.
[0090]
In other words, the outer end portion of the movable plate 603 is bent upward from the pivot fulcrum 611 so as to be the restricting member 625 facing the tank guide 11, and when the main body is mounted, the locking means is released to move the movable plate 603. Even if the opening is attempted to rotate, the restricting member 625 abuts against the wall surface of the tank guide 11 and cannot be opened.
[0091]
In the above configuration, the inclined surface 501, the regulating member 625 and the tank guide wall 11 constitute the oil supply port release preventing means in the state where the main body is mounted. If the oil supply tank 6 is not taken out from the main body, oil supply cannot be performed. It is possible to prevent fuel spillage during refueling in the main body 1.
[0092]
The other configuration of the closing means is the same as that of the fourth embodiment, and the other configuration is the same as that of the first embodiment, so that the description thereof is omitted.
[0093]
[Sixth Embodiment]
FIG. 20 is a cross-sectional view of a fuel filler port portion showing a sixth embodiment. This embodiment is an example in which the closing means 600 is not formed on the inclined surface of the tank but on the upper surface. When the rotation-type closing means as in the fourth embodiment is provided on the upper surface of the tank, the closing means 600 can be easily opened even when the main body is mounted.
[0094]
In the present embodiment, in order to prevent the closing means 600 from being released, the rotation fulcrum 611 of the movable plate 603 is arranged on the outer peripheral side of the fuel tank 6 with respect to the open end, and the outer periphery than the rotation fulcrum of the movable plate 603. The part side is bent downward to form an L-shaped restricting member 625, while the upper part of the tank guide wall surface 11 is retreated to the side to form a stepped part 627. When the tank is attached, the lower end of the restricting member 625 The stepped portion 627 is opposed to each other with contact or a slight gap.
[0095]
In the above configuration, when the closing means is to be opened and rotated, the lower end of the regulating member 625 on the rotation fulcrum 611 side comes into contact with the stepped portion 627 of the tank guide, and the movable plate 603 cannot be opened any more. Therefore, if the fuel tank 6 is not taken out from the main body, it becomes impossible to supply fuel, and fuel spillage at the time of fuel supply to the main body 1 can be prevented.
[0096]
The other configuration of the closing means is the same as that of the fourth embodiment, and the other configuration is the same as that of the first embodiment, so that the description thereof is omitted.
[0097]
[Other Embodiments]
Note that the present invention is not limited to the above-described embodiment, and it is needless to say that many modifications and changes can be made within the scope of the present invention. Since the present invention is characterized in that it prevents opening of the fuel filler opening arranged in the upper part of the tank in the state where the main body is mounted, other configurations, for example, the vaporization unit described in the drawings for the combustion system and Not only the structure provided with a burner part but a suitable system is employable.
[0098]
Further, in the above embodiment, the connection means for the oil supply tank is exemplified as having the oil supply path and the return oil path, but it may be configured to have only the oil supply path. Furthermore, in the said embodiment, although the oil transmission path | route and the return oil path | route were comprised with one joint, you may comprise both paths with a separate joint.
[0099]
【The invention's effect】
  As explained above, according to the present invention,The oil supply port is arranged on a part of the upper surface and the side surface of the oil tank, or the inclined surface formed between the upper surface of the oil tank and the two side surfaces adjacent to the upper surface, and the open end is the lower end side than the rotation fulcrum. In the closing means for closing the oil supply port by the opening and closing operation of the movable plate in the oil tank, the release of the closing means is prevented by the wall surface of the tank storage chamber when the oil supply tank is mounted. If it is not taken out more, it will not be possible to refuel, and there will be no fear of fuel leakage, improving safety.
  In particular, an extended portion is provided on the locking lever arranged at the open end of the movable plate. When the tank is mounted on the main body, the extended portion faces the tank guide in the locking posture of the locking lever, and the locking lever is Even if the rotation is to be released, the extended portion and the wall surface of the tank housing chamber come into contact with each other and the rotation release of the locking lever is prevented, which improves safety.
  In the case of the closing means in which the pivot point of the movable plate is arranged on the inclined surface closer to the outer peripheral portion of the fuel tank than the open end, a regulating member is provided on the pivot point side of the movable plate and the main body of the fuel tank is mounted. In this state, the movable plate is prevented from being pivoted and released by the contact between the regulating member and the wall of the tank storage chamber.If the fuel tank is not removed from the main body, fuel cannot be supplied and there is a risk of fuel leakage. Safety can be improved.
[Brief description of the drawings]
FIG. 1 is a partial front sectional view of an oil fan heater according to a first embodiment of the present invention.
FIG. 2 is a schematic view of the liquid fuel combustion apparatus.
[Fig. 3] Schematic of the oil tank
4A is a view showing a state where a fuel tank is mounted on a main body, and FIG. 4B is a view showing a state where a fuel cap is not released.
[Fig.5] Structure of the oil supply joint
[Fig. 6] Structure of oil supply joint and suction pipe in oil tank
[Fig. 7] Structure of the oil cap with the pressure valve of the oil tank
[Fig. 8] Structure of oil supply joint receiver
Fig. 9 Structure of burner and vaporizer
Fig. 10 Structure of heat pump
FIG. 11 Structure of cooling fin
[Fig. 12] State diagram of the connection part of the oil tank
FIG. 13 is a schematic view of a fuel tank according to a second embodiment.
FIG. 14 is a schematic view of a fuel tank according to a third embodiment.
FIG. 15 is a diagram showing a state in which the oil tank is mounted on the main body.
FIG. 16 is a perspective view of a fuel tank according to a fourth embodiment.
FIG. 17 is a cross-sectional view of the oil filler port when the fuel tank is mounted on the main body.
FIG. 18 is a cross-sectional view of a fuel filler port in a state where a main body of a fuel tank is removed.
FIG. 19 is a sectional view of a fuel filler port portion showing a fifth embodiment.
FIG. 20 is a sectional view of a fuel filler port portion showing a sixth embodiment.
FIG. 21 is a partially omitted front sectional view of an example of a conventional oil fan heater.
FIG. 22 is a schematic side sectional view of the oil fan heater.
FIG. 23 is a cross-sectional view of an essential part of the oil tank and the receiver.
[Explanation of symbols]
1 body
2 Front plate
3 Top plate
4 Operation part
5 outlets
6 Refueling tank
7 Lid
8 table
9 Refueling joint
10 Refueling joint receiver
11 Tank guide
12 Vaporizer
13 Electromagnetic pump
14 Burner
15 Combustion chamber
16 Partition plate
17 Burner box
18 Heat pipe
19 Cooling fin
20 Air valve
21 Handle
22 Oil cap with pressure valve
23 Oil meter
24 Valve mechanism
25 Suction pipe
26 Top view
27 Side
28 Refueling
29 Opposite side
31 Refueling tank receiver
32 Reed switch
33 Disc
34 O-ring packing
35 Valve spring
36 Seal packing
37 lid nut
38 O-ring
39 Passage
40 passage
41 Insertion hole
42 Insertion hole
43 Mounting holes
45 filters
46 Float
47 Suction port body
48 cap
49 Pressure valve mechanism
50 Rubber packing
51 Pressure relief hole
52 Pressure relief hole
53 Disc
54 Spring
55 Benches
56 Receiving body
57 Valve seat
58 lattice holes
59 Seal surface
60 storage
61 passage
62 passage
63 concave groove
64 passage
65 groove
66 Packing
67 Vaporizer
68 nozzles
69 needle
70 Solenoid valve
71 Fuel inlet
72 Return
73 Stainless pipe
74 Copper pipe
75 Electromagnetic coil
76 Movable piece
77 Adsorption piece
78 Spring for pressing
79 Mixing tube
80
81 containers
82 entrance
83 Exit
84 pipe
85 Trumpet-shaped mouth
86 Fin
87 pipe
88, 89, 90, 91, 92, 93 Oil supply pipe
773 Heat recovery unit
447 Packing
448 Reed switch
444 Suction port
500 tank compartment
501 Inclined surface
600 Blocking means
601 Fixed plate
603 Movable plate
607 Locking means
615 Locking lever

Claims (3)

In a liquid fuel combustion apparatus in which a fuel tank having a fuel filler opening and its closing means is detachably accommodated in a tank housing chamber of the apparatus main body, the upper surface and part of the side surface of the fuel tank or the upper surface of the fuel tank An inclined surface having a predetermined angle is formed between the upper surface and the two side surfaces adjacent to the upper surface, and an oil supply port is disposed on the inclined surface, and the closing means is integrated with the oil supply port, and the fixed plate A movable plate that is rotatably supported by the movable plate, a lid member with packing that is provided on the movable plate and closes the oil supply port, and a rotation fulcrum of the movable plate for holding the movable plate in a closed posture of the oil supply port. Engaging means disposed on the opposite open end side, the open end side of the movable plate being disposed below the pivot point of the movable plate on the lower end side of the inclined surface, When the main body is mounted, the closure means is released from the tank storage chamber. Liquid fuel combustion apparatus characterized by being blocked by the surface. The locking means includes a fixed plate integrated with an oil filler port, a movable plate supported by the fixed plate so as to be freely rotatable and openable, a lid member with packing provided on the movable plate and closing the oil filler port, In order to hold the movable plate in the closed position of the fuel filler opening, the movable plate is provided with a locking means disposed on the open end side opposite to the pivot point of the movable plate, and is freely rotatable on one of the movable plate and the fixed plate. A locking lever with a locking portion supported by the locking plate, and a locking receiving portion provided on the other of the movable plate and the fixed plate so as to engage with the locking portion and hold the movable plate in a closed position. A lever spring that urges the lever in a direction in which the latching portion engages with the latch receiving portion, and a portion on the outer end side of the latching lever is extended to form an extending portion, and the tank When the main body is mounted, the extended part is opposed to the tank guide in the locking posture of the locking lever, and the locking lever is released and rotated. Even if, in contact and a wall surface of the extending portion and the tank housing chamber skilled, liquid fuel combustion apparatus according to claim 1, characterized in that it is configured to prevent the rotation release of the locking lever. In a liquid fuel combustion apparatus in which a fuel tank having a fuel filler opening and its closing means is detachably accommodated in a tank housing chamber of the apparatus main body, the upper surface and part of the side surface of the fuel tank or the upper surface of the fuel tank An inclined surface having a predetermined angle is formed between the upper surface and the two side surfaces adjacent to the upper surface, and an oil supply port is disposed on the inclined surface, and the closing means is integrated with the oil supply port, and the fixed plate A movable plate that is rotatably supported by the movable plate, a lid member with packing that is provided on the movable plate and closes the oil supply port, and a rotation fulcrum of the movable plate for holding the movable plate in a closed posture of the oil supply port. Engaging means disposed on the opposite open end side, and the pivot point of the movable plate is disposed on the outer peripheral portion side of the oil supply tank from the open end on the inclined surface, and the pivot point of the movable plate A regulating member is provided on the side, and the main body of the oil tank is installed State, the liquid fuel combustion apparatus characterized by being prevented by abutment of the wall surface of the rotating opening of the movable plate said regulating member and the tank housing chamber.

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