WO2001057441A1

WO2001057441A1 - Liquid fuel combustion device

Info

Publication number: WO2001057441A1
Application number: PCT/JP2001/000658
Authority: WO
Inventors: Tsutomu Tsuda; Kazuo Yamasaki; Akemi Tanno; Hiroshi Kitagaito; Toyokazu Shirouchi; Masahiko Goto; Yasuaki Kuwahara; Mamoru Morikawa
Original assignee: Sharp Kabushiki Kaisha
Priority date: 2000-01-31
Filing date: 2001-01-31
Publication date: 2001-08-09
Also published as: CN100402929C; KR100606297B1; EP1256762A1; CN1396998A; KR20020069028A; EP1256762A4

Abstract

A liquid fuel combustion device comprising an oil feed tank (6) removably mounted on the main body, a combustion having a vaporizer (B1) for heating and vaporizing the fuel and a burner (B2) for burning the vaporized fuel, and an oil feed pump (EP) for feeding the fuel in the oil feed tank to the vaporizer, wherein when a vessel to be disposed below the oil feed tank for temporarily storing fuel is dispensed with and when the oil feed tank is mounted on the main body, an oil feed path extending from the oil feed tank to the combustion section is connectively formed, for which purpose the oil feed tank side is provided with an oil feed joint (9) while the main body side is provided with an oil feed joint support (10) which is removably connectable to the oil feed joint.

Description

Description Liquid fuel combustion equipment Technical field

The present invention relates to a heating device such as an oil fan heater. Background art

Conventionally, petroleum fan heaters have been widely used in ordinary households as heating equipment in winter. FIG. 119 is a schematic partially omitted front sectional view showing an example of a conventional oil fan heater, and FIG. 120 is a side sectional view thereof. FIG. 121 is a cross-sectional view of a fueling cap and a receiving member of a fueling tank.

As shown in Fig. 119, an oil supply tank 102 is provided in front of the oil fan heater main body 101 to inject and store liquid fuel 104 such as kerosene in advance. A sufficient amount of liquid fuel 104 is supplied to the fuel tank 103 connected below the fuel tank 102.

The liquid fuel 104 accommodated in the fuel tank 103 is guided to the vaporizer 107 via the oil supply pipe 106 by the fuel pump electromagnetic pump 105. Here, the sent liquid fuel 104 is vaporized by a vaporizer heater (not shown) provided in the vaporizer 107. Numeral 109 denotes a combustion chamber, and at the bottom thereof, a parner 108 is fixedly supported.

The fuel vaporized by the carburetor 107 is vigorously injected from a nozzle, and is introduced into the parner 108 together with combustion air to form a flame. Combustion occurs at the mouth 108a, and the air in the combustion chamber 109 is heated. Then, as indicated by the arrow in Fig. 120, the filter is turned on by a blower fan 1 1 1 attached to a fan motor 110 consisting of a single-phase induction motor on the back of the main unit 101. The air in the chamber sucked in through 1 1 2 is blown into the room from the outlet 1 13 as warm air together with the heated air and combustion gas in the combustion chamber 1 09.

On the other hand, the frame sensor 114 provided slightly above the flame outlet 108a detects the flame current due to the combustion flame. The air is blown into the room from the air outlet 113 as warm air with the air sucked in from the room. At this time, the room temperature is detected by the room temperature sensor 115, and based on the temperature difference between the room temperature and the set temperature, the control device (not shown) operates the fuel pump electromagnetic pump 105 (1st 19th). By controlling the driving of the fuel cell, the supply amount of the liquid fuel 104 to the carburetor 107 is adjusted, and the thermal power of the combustion flame in the parner 108 is adjusted.

For example, if 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 carburetor 107 is increased, and the room temperature is rapidly raised to the set temperature. Adjust the feed rate to keep it constant near the set temperature.

Also, as shown in Fig. 121, when refueling the fuel tank 102, remove the fuel tank 102 from the main body 101, turn it upside down, and open the valve part of the fuel tank 102. Remove the refueling cap 1 16 from the tank, inject fuel from the ferrule 1 17 and check that the fuel has been supplied to the refueling tank 102.Then, refuel the cap on the thread of the ferrule 1 17 And turn it over so that the lubrication cap 1 1 6 is down. And insert it into the main body 101, attach it to the upper surface of the fuel tank 103, insert the refueling cap 1 16 into the receptacle 1 18 and place it on the fuel tank 103 .

By the way, in the conventional oil fan day, it is necessary to remove the fuel tank from the main body to refuel the fuel tank and turn the fuel tank upside down so that the fuel cap is turned upward. It is necessary to turn the oil tank upside down again to close the cap and insert it into the main unit, which is cumbersome to handle.

In addition, the fuel cap is tightened with the base and screws.If the fuel cap is not tightened properly, the fuel cap may come off when the fuel tank is turned over or the fuel may flow out. was there. In particular, in the elderly society, there has been a demand for improvement due to a decrease in grip strength and a decrease in the ability to tighten screws.

Also, when supplying fuel to the fuel tank (the fuel level rises to the valve of the filler cap, and the air in the filler tank is supplied while maintaining the constant oil level by replacing the air. The valve part is always wet with fuel, and when removing the refueling cap to refuel the refueling tank, fuel sticks to the hand and slips when tightening the screw. There was a problem of smelling hands and getting dirty.

In addition, when cleaning the impurities in the vaporizer by baking, it is necessary to remove the oil tank from the main unit and remove the residual oil in the fuel tank located below the oil tank with a pump or the like. Was dissatisfied.

SUMMARY OF THE INVENTION In view of the above problems, the present invention does not turn over during refueling of a refueling tank, has no fuel attached to hands, and has an empty burner for a carburetor. An object of the present invention is to provide a liquid fuel combustion device that can clean without removing fuel during cleaning. Disclosure of the invention

The present invention provides a fuel supply tank detachably mounted in a main body of a liquid fuel combustion device, a combustion unit having a vaporizer for heating and vaporizing the fuel and a parner for burning the vaporized fuel, An oil feed pump that feeds fuel to the vaporization section; and a first connection section that connects and forms an oil feed path from the oil supply tank to the combustion section when the oil supply tank is mounted on the main body. A liquid fuel characterized in that the connection portion of (1) has an oil supply joint provided on the oil supply nozzle side and an oil supply joint receiver provided on the main body detachable from the oil supply joint. In the combustion device. As a result, the fuel tank that temporarily stores fuel below the conventional fuel tank is abolished, the fuel in the fuel tank can be fed directly to the combustion section, and the number of components in the oil feed path is reduced, and the fuel tank is reduced. The refueling tank is no longer required to be turned over when refueling.

Further, a second connection portion is provided for connecting the oil supply tank to a return oil path from the combustion section, and the second connection portion is provided with a return oil joint provided on the oil supply tank side and the return oil joint. The fuel can be returned to the supply tank by having the return oil joint receiver provided on the main body side that is detachable from the fuel tank.

The oil supply joint or the oil supply joint, the oil supply joint receiver, and the return oil joint are provided with a valve mechanism for opening and closing the oil supply path, so that oil supply to the combustion section can be reliably performed. Can be shut off.

In addition, a shield for shutting off the supply of fuel from the fuel tank to the combustion section. By providing a valve shutoff in the oil feed path, fuel supply can be reliably shut off by controlling the shutoff valve. The shutoff valve is an air valve that cuts off the supply of fuel from the fuel tank to the combustion unit by sending air into the oil supply path.

Further, by arranging the passage in the oil supply joint connected to the suction passage in the fuel tank above the fuel level in the fuel tank, the fuel tank is in a full state of the fuel. To prevent overflow.

Further, a fuel passage connecting the fuel tank and the oil pump forms a rising passage which is formed in an inverted U-shape, and an upper end of the rising passage is disposed above a fuel level in the fuel tank. By doing so, it is possible to prevent the fuel tank from overflowing even when the fuel tank is full.

Further, by forming the rising passage on the main body side and disposing the shut-off valve at the upper end of the passage of the rising passage, it is possible to prevent the fuel tank from overflowing even when the fuel tank is full.

Further, the outlet of the fuel passage of the return oil joint on the fuel tank side is disposed above the fuel level of the fuel tank, or is directed upward so as to be higher than the fuel level of the fuel tank. By arranging, it is possible to prevent the fuel tank from overflowing even when the fuel tank is full, and also to refuel even if the air intake of the air valve is arranged above the fuel level of the fuel tank. Even if the tank is full of fuel, it can be prevented from overflowing.

In addition, by providing an air hole on the upper surface of the fuel tank, it is possible to prevent a rise in pressure in the fuel tank due to a rise in temperature, and by providing a closing mechanism for closing the air hole when the tank falls, Fuel leakage from the air holes can be prevented. By making the inner diameter of the passage of the return oil passage larger than the inner diameter of the passage of the oil supply passage, the fuel in the pipe can be quickly returned to the oil supply tank.

When the refueling tank is mounted on the main body, the refueling tank can be mounted on the main body in only one direction, so that other parts can be prevented from being damaged when the refueling tank is mounted.

The oil supply joint and the return oil joint on the oil tank side are integrated to form a fuel tank joint part, and the oil supply joint receiver and the return oil joint receiver on the main body side are integrated. By configuring the main body side joint receiving portion, the first and second connecting means can be made compact, and the number of assembling processes can be reduced.

The location of the joint portion on the refueling tank side is not particularly limited as long as it is above the refueling tank, but when the refueling tank is inserted into the tank housing chamber from above the main body, the joint portion and the combustion portion When a configuration is used in which the joint is connected to the joint receiver on the side, no functional parts can be arranged below the oil transfer joint in the lubrication tank.

Therefore, the oil supply joint portion substantially protrudes from the outer surface of the fuel tank, and the projected area of the oil tank increases. Generally, the lubrication tank is formed by joining a U-shaped tank member and a flat tank member in plan view.To reduce the projected area of the lubrication tank, the lubrication tank must be joined. It is preferable that a part of the inverted U-shaped tank member on the side opposite to the surface is retracted inward, and a joint portion is provided in the concave portion.

At the joint of the refueling tank, it is necessary to connect the pipe for the suction passage from the inside of the refueling tank and the return pipe for returning the fuel to the inside of the tank. Although it is necessary, if the joint is provided with means for positioning these pipes in the fuel tank and connecting them to the joint, the piping can be easily positioned without any special jig.

In this case, if the connection in the oil tank is connected to the joint on the oil tank side by means of connecting the pipe in the oil tank, the pipe connection processing is easy and the processing space can be reduced.

The main body side joint receiving section has a shutoff valve for shutting off the supply of fuel from the fuel tank to the combustion section, and a protective cover for protecting the shutoff valve. The joint section on the fuel tank side prevents impact. It has a cushion cover, and when installing the refueling tank to the main body, by using both covers as guides for inserting the tank, the power bar has protection and insertion guide functions when the refueling tank is installed. Can be used for both purposes.

In order to detect water in the refueling tank, there is provided a water detecting unit including a first electrode contacting a water receiving tray provided on a bottom surface of the refueling tank, and a second electrode contacting the refueling tank. However, at least one of the two electrodes is cantilevered on the detection table and has a fulcrum other than the fixed portion, so that the stress applied to the electrodes can be dispersed.

By providing a fuel container for temporarily storing fuel and a cooling unit for cooling fuel in the return oil path between the combustion unit and the second connection unit, the return fuel from the carburetor can be cooled.

Furthermore, referring to the shape of the refueling tank, when the refueling tank is installed inside the body, the first connection part and the Z or the second connection part on the refueling tank side are arranged within the outer and ridge lines in the top view of the refueling tank. By adopting the configuration, for example, even if the tank falls over when the tank is carried, it is possible to prevent the connection portions from being damaged. These connections are shockproof Even in the case of the structure provided with the stopping means, it is preferable to adopt a structure including the impact preventing means and arranged in the outer contour / ridge of the top view of the fuel tank.

Here, arranging the connection portion and the like in the outer contour and ridge of the top view of the fuel tank means, for example, that the side face is receded from the ridge formed by crossing adjacent side faces of the fuel tank toward the center of the evening tank. In this way, a substantially triangular or substantially rectangular space area is formed within the outer and ridge lines of the top view of the refueling tank, and connection parts are placed in this space area, or the center of the tank is located on the side of the refueling tank. By retreating in the direction, it means that a recess is formed in the outline and ridgeline of the top view of the refueling tank, and a connection portion and the like are arranged in the recess.

It is to be noted that the connection portion and the like also include other members attached to the fuel tank, such as an air valve, and it is preferable that the connection portion and the like be disposed in the outer ridge line of the top view of the tank.

By providing a member for fixing the fuel suction passage to the fuel pump to the inside of the fuel tank, contact between the suction passage and the inner wall of the fuel pump during transportation can be prevented, and mutual damage can be prevented.

Further, by disposing the first connection portion and / or the second connection portion above the liquid level of the fuel in the refueling tank, the fuel in the refueling tank does not overflow.

Further, the fuel tank is provided with a suction pipe for sucking fuel to be sent to a fuel pump, and a suction port for sucking fuel of the suction pipe is located near a lower portion in the fuel tank so that the fuel is efficiently used. Can be sucked.

In addition, the first connection part and the second connection part are provided with guide guide members that can be separated from and connected to each other on the fuel tank side and the combustion part side. Connection with the body can be smooth.

That is, in the present invention, the fuel tank for temporarily storing fuel below the fuel tank is abolished, the fuel in the fuel tank is directly fed to the combustion section, and the number of components of the oil feed path is reduced. To improve the handling of the refueling tank and to provide a connection means to connect the refueling tank to the oil supply path to the combustion section when the refueling tank is mounted on the main unit. Eliminated the need.

The combustion method in this case can be applied to any of the pot method, pressure spray method, rotary atomization method, jet atomization method, and vaporization method specified in JISS 330. is there. The pot type is a method in which the fuel is evaporated by an evaporating dish, in which a vaporizing section that heats and vaporizes the fuel and a parner that burns the vaporized fuel are integrated. The pressure atomization method is a method in which fuel is atomized by pressure, evaporates and burns, and the vaporization part and the combustion part are integrated. Rotary atomization is a method of atomizing fuel by centrifugal force and evaporating and burning. The jet spray method is a method in which the fuel is atomized by an air jet and is evaporated and burned, and the carburetor and the combustion section are combined. The vaporization type is a method in which fuel is evaporated in a vaporization chamber or a vaporizer, and has a vaporization section and a combustion section.

Among them, particularly, the pot type, the pressure spray type, the rotary atomization type, and the jet spray type in which the vaporizing section and the combustion section are integrated are suitably used. That is, a refueling tank that is removably mounted in the main body of the device, a combustion unit that integrates a vaporizer that heats and vaporizes the fuel and a parner that burns the vaporized fuel, and vaporizes the fuel in the fuel tank. In a liquid fuel combustion system equipped with an oil feed pump that feeds fuel to a section, a fuel tank that temporarily stores fuel is It was abolished and fuel from the fuel tank was sent directly to the combustion section.

In such a direct oil supply type liquid combustion device, the fuel is not temporarily stored in the fuel tank as in the past, so the fuel supply to the oil supply path from the refueling tank to the combustion section is cut off. It is preferable to provide a valve so that oil supply to the combustion section can be reliably shut off.

In addition, in the case of a combustion system in which the vaporization section and the combustion section are integrated, it is not necessary to return the fuel from the vaporization section, so it is sufficient to provide a connection means for connecting the refueling tank to the oil supply path leading to the combustion section. As an example of the connecting means, an embodiment constituted by an oil supply joint on the oil supply tank side and an oil supply joint receiving on the combustion section side can be exemplified. Also, if a valve mechanism is provided in the oil supply joint and the oil supply tank is set to open when the oil supply tank is attached to the main unit and closed when the oil supply tank is removed from the main unit, the tank There is no risk of fuel leaking from the fuel tank at the time of removal, and when the tank is installed, the oil supply path is reliably opened.

This shut-off valve may be arranged in the oil supply path either in the path connecting the oil supply tank and the oil supply pump or in the path connecting the oil supply pump and the combustion section. The shut-off valve may have any structure as long as it has a function of shutting off the oil supply path. Examples thereof include a solenoid valve and an air valve. The solenoid valve can be integrated with an oil feed pump composed of an electromagnetic pump or the like to save space and shorten the machining process when connecting the oil feed path.

The air valve is provided to take in the air that shuts off the fuel supply to the oil supply path, and can be arranged at an appropriate position in the oil supply path. Collocated in the tray If this is the case, the piping connection process can be simplified as compared with the case of arranging in other routes. The air valve is preferably installed at a position higher than the fuel level of the tank in order to prevent the fuel from leaking from the air valve when the fuel tank is full.

The arrangement of the oil supply pump can be set at an appropriate position in the oil supply passage, such as a structure arranged on the combustion section side of the connection means or a structure arranged on the oil supply tank side of the connection means.

On the other hand, the suction passage for pumping the fuel in the refueling tank to the oil supply pump is long enough to reach the bottom of the refueling tank.Therefore, means to fix the passage in the refueling tank so that it does not move is provided. Can be opened.

In addition, since the refueling tank is of a type in which lubrication is performed without being turned upside down, it is desirable that the refueling tank be provided with a refueling port for injecting fuel at an upper portion of the refueling tank and a refueling cap for closing the refueling port. Okina It is preferable to provide a valve mechanism in the oil cap to release the pressure inside the tank, so that the tank internal pressure rises due to the temperature difference between the inside and outside of the tank so that the fuel does not overflow.

That is, the invention of the present application is provided with a removable fuel tank inside the body, a vaporizer for heating and vaporizing the fuel, an electromagnetic pump for feeding the fuel in the fuel tank to the vaporizer, and a burner for burning the vaporized fuel, A liquid fuel combustion device is characterized in that a container for temporarily storing fuel is eliminated below the fuel tank.

Connection means for connecting a fuel filler port for injecting fuel into the fuel tank, a fuel filler cap for closing the fuel filler port, and a fuel suction passage to the electromagnetic pump when the fuel filler tank is mounted on the main body; Through the connection means and through the lubrication tank and the electromagnetic pump to the vaporizer. A liquid fuel combustion apparatus characterized by having a fuel path that is provided. Further, there is provided a liquid fuel combustion apparatus characterized in that an air valve is provided in the middle of a passage connecting the fuel tank and the electromagnetic pump.

Further, the liquid fuel combustion device is characterized in that a connection mechanism for connecting the fuel pump of the electromagnetic pump to the fuel pump when the fuel tank is mounted on the main body is provided with a valve mechanism for shutting off the fuel flow. .

Further, there is provided a liquid fuel combustion device comprising: connecting means for connecting the vaporizer to a fuel tank; and a fuel return path connecting the vaporizer and the fuel tank through the connecting means. .

Further, there is provided a connecting means for connecting the carburetor to the fuel tank, and a valve mechanism for shutting off a flow of the fuel which connects the carburetor and the fuel tank through the connecting means is provided. It is a device.

Further, there is provided a liquid fuel combustion apparatus characterized in that a heat pump of a container for temporarily storing fuel is provided in the middle of a fuel return passage connecting the vaporizer and a fuel tank.

Further, a liquid fuel combustion device is provided in the fuel tank, which is provided with a valve mechanism for releasing pressure and a fuel cap serving also as a lid.

Further, in the liquid fuel combustion device, the refueling joint of the connecting means is disposed above the liquid level of the fuel in the refueling tank. Further, the liquid fuel combustion device is characterized in that a passage communicating with the refueling joint of the connecting means is provided inside the refueling tank, and a filter for removing dust is provided at the end of the passage.

Further, the liquid fuel combustion device is characterized in that the air valve is opened during the operation stop to clean the carburetor by baking to remove impurities deposited on the carburetor.

Claims

Further, there is provided a body fuel combustion apparatus characterized in that a means for cooling the fuel in the passage is provided in the fuel passage for returning the fuel from the carburetor to the heat pump. Further, in order to solve the above-mentioned problems, the present invention eliminates the fuel tank for temporarily storing fuel, and feeds the fuel in the fuel tank directly to the fuel unit. The fuel did not get wet. In this case, the refueling tank has a refueling port provided at an upper portion thereof, a refueling cap for closing the refueling port, and a fuel pump to be supplied to the refueling pump when the refueling tank is attached to the main body. A first connection means connected to the ascending passage, and an oil supply path communicating with the carburetor via the oil supply tank and the oil supply pump is formed through this connection means. The fuel can be replenished and mounted on the main body without returning. The first connection means includes an oil supply joint on the oil supply tank side and an oil supply joint receiver on the combustion section detachable from the oil supply joint, and is connected to the oil supply joint. By providing a valve mechanism that opens when the fuel tank is attached to the main body and closes when the fuel tank is removed from the main body, it is possible to prevent fuel from leaking when the tank is removed from the main body. Of course, it is also possible to adopt a mode in which a similar valve mechanism is provided in the oil transfer joint receiver, and the valves are opened when the tank main body is mounted. In addition, a second connecting means for connecting the vaporizer to the fuel tank is provided, and a return oil route of the fuel that connects the vaporizer and the fuel tank through the second connecting means is formed. Fuel gas can be returned to the fuel tank. The second connection means includes a return oil joint on the refueling tank side and a return oil joint receiver on the combustion section detachable from the return oil joint. If a valve mechanism is provided that opens when the refueling tank is attached to the main unit and closes when the refueling tank is removed from the main unit, fuel can be removed when the tank is removed from the main unit, as in the first connection method. Can be prevented from leaking. Of course, it is also possible to adopt a mode in which a similar valve mechanism is provided in the return oil joint receiver, and the valves are opened when the tank body is mounted. Further, it is also possible to adopt a configuration in which the first connection means and Z or the second connection means is provided with an impact prevention means for mitigating an impact to protect the connection portion from an impact. Further, if the first connection means and the second connection means are disposed above the fuel level of the fuel in the fuel tank, it is possible to prevent the fuel in the full state of the ink from overflowing. Further, it is possible to adopt a configuration in which a means for shutting off the supply of fuel is provided in the middle of an oil supply path connecting the oil supply tank and the oil supply tank, and the supply of fuel is reliably shut off. A solenoid valve or an air valve can be exemplified as the means for shutting off. The air valve is for taking in air for shutting off the supply of fuel, and its arrangement is not particularly limited. However, it is preferable that the air valve is arranged in the oil transfer joint receiver of the first connection means. By arranging this air valve above the fuel level of the fuel tank, it is possible to prevent the fuel in the tank full state from overflowing. If a pressure valve mechanism for adjusting the pressure in the fuel tank is provided in the second connection means, it is possible to prevent fuel from overflowing from the tank due to a decrease in the tank internal pressure. The pressure valve mechanism opens the valve when the oil tank is mounted on the main unit and is connected to the oil tank, and the oil tank is removed from the main unit. If the valve is set to open when it comes out, the tank pressure can be adjusted automatically by opening the valve when the main unit is installed, and the valve will automatically close when the main unit is removed, preventing fuel leakage from the tank. Can be prevented. It is also possible to provide a means for fixing the fuel suction passage from the refueling tank to the oil feed pump in the fuel tank so that the suction passage is not moved. Further, according to the present invention, the fuel tank includes a refueling tank for storing detachable fuel inside the main body, and a combustion unit for heating and burning the fuel, and the fuel tank for temporarily storing fuel below the refueling tank is eliminated. The fuel in the tank is fed directly to the oil pump that sends it to the combustion section, and the number of components in the fuel path is reduced to improve the ease of handling of the fuel tank. A first connection means for connecting a suction passage for sending fuel from the fuel tank to the oil pump when the oil tank is mounted in the body between the oil tank and the oil pump; Need not be turned over when refueling. If an air valve is provided in the passage connecting the fuel tank and the oil pump, the operation of the air valve shuts off the fuel path connecting the oil tank and the oil pump. Further, a means for fixing the fuel suction passage to the oil supply pump in the oil supply tank may be provided so that the suction passage is not moved in the tank so that the suction passage is not deformed. The combustion unit can be exemplified by a configuration including a vaporizer for heating and vaporizing the fuel, and a burner for burning the fuel vaporized by the vaporizer. In this combustion system using a carburetor, if a passage for returning fuel is provided between the carburetor and the fuel tank, and a second connection portion connected to this passage is provided in the fuel tank, the fuel can be transferred from the fuel tank to the oil pump. Fuel —No strikes. If a heat pump for temporarily storing fuel or a cooling means for cooling the fuel in the passage is provided in this return passage, the return fuel from the vaporizer can be cooled and liquefied. Further, if the first connection means and the second connection means are provided with a valve mechanism for shutting off the flow of fuel when the fuel tank is removed from the body, fuel does not leak from the fuel tank connection means. The first connecting means and the second connecting means can be integrated to reduce the number of constituent parts and to achieve compactness. Further, a means for mitigating an impact can be provided around the first connection means and the second connection means. Further, if the first connection means and Z or the second connection means is disposed above the fuel level of the fuel tank, the fuel in the fuel tank does not overflow. If the first connection means and the second connection means are provided with guide means that can be separated from and connected to each other on the refueling ink tank side and the body side, they will be connected smoothly to the body receiving side of the connection means. Can be. On the other hand, the refueling tank is provided with a suction pipe for sucking the fuel to be sent to the oil pump, and the suction port for suctioning the fuel is located near the lower part of the refueling tank. Better fuel suction. Furthermore, if a filter for removing dust is provided at the fuel suction inlet of the suction pipe, it is possible to prevent dust and dust from being sucked into the suction pipe. The refueling cap that closes the refueling port that injects fuel into the refueling tank is provided with a valve mechanism that releases air pressure in the refueling tank, eliminating the risk of fuel overflow due to air pressure expansion due to the temperature difference between the refueling tanks. Monkey When the fuel combustion operation of the liquid fuel combustion device was stopped, air was sent to the carburetor instead of fuel by opening the air valve, and accumulated on the carburetor. By having an empty bake cleaning function of a vaporizer that bake impurities, cleaning can be performed without removing fuel. Further, in order to solve the above-mentioned problems, the present invention eliminates the fuel tank for temporarily storing fuel, and feeds the fuel in the refueling tank directly to the combustion section, thereby refilling the refueling tank with a refueling port cap. In addition to ensuring that the fuel tank does not get wet with fuel, various functions required with the elimination of the fuel tank have been added to the refueling tank. In order to detect the shortage of fuel in the refueling tank as soon as possible, there is a structure to provide a fuel amount detecting means for detecting the amount of fuel in the refueling tank, and a water detecting means to detect water generated in the refueling tank. Equipped with a configuration that eliminates problems caused by water being supplied to the combustion section and an ink tank installation detection unit that detects whether or not the refueling tank is installed so that operation cannot be started unless the tank is installed. The configuration was adopted. In this case, the fuel amount detecting means, the water detecting means, and the tank mounting detecting means may be provided at any place of the tank, however, in consideration of the physical properties of the fuel and water or the detecting function, the bottom of the tank is considered. The configuration provided on the side is preferable. The fuel amount detection means includes, for example, a float with a magnet arranged inside the tank, and a lead switch installed on the tank mounting table side to turn off when the magnet approaches and separates. The configuration can be exemplified. As the water detecting means, a conductive water tray provided on the bottom of the conductive tank for storing dewed water, and an electrode contacting the water tray. An electrode that contacts the refueling tank; An insulator for electrically insulating the water pan and the oil tank from each other; With the water stored in the water pan An example is a configuration in which water is detected based on a difference between an electric resistance value and fuel. The water tray is To perform water detection accurately, It is preferable to form it separately from the tank and attach it to the mounting hole on the bottom of the tank via an electrical insulator. The material is made of conductive material, With stainless steel, It is suitable in that generation of shrinkage can be prevented. As an electrical insulator, A peripheral wall of a hole formed on the bottom of the tank, An example is a non-conductive packing having a strong force and interposed between the periphery of the water receiving tray. If you apply water repellent treatment to this packing, Even after draining, water is hard to collect, The electrodes that contact the water tray and tank, respectively, can prevent malfunction. For example, on the tank mounting table outside the tank, The configuration in which the water receiving tray and the tank are brought into contact with the respective electrodes is also suitable from the viewpoint of electrode arrangement. in this case, The position where the water tray and the tank come closest to each other functions as the tip electrode, Water detection is performed based on the difference in resistance between water and fuel stored during this time. On this occasion, A needle with a narrow width and a sharp-edged tip is provided in a part of the hole on the tank This part functions as the tank-side tip electrode, Also, By applying non-conductive paint to part of the water pan, Water can be detected with higher accuracy. Also, On the tank side where the water pan is mounted, If you attach a guard to guard the water tray, When removing the tank from the main unit and refueling, Scratches and dents on the water tray can be prevented. Tank mounting detection means, For example, A micro switch installed on the top of the tank mounting table, An example is a configuration including a magnet installed on the bottom of the tank and a lead switch on the tank mounting table. These fuel amount detection means, Water detection means, When the liquid fuel combustion device is controlled by an input signal from the In the control section, Control to stop operation when the tank mounting detection means is 0 F F (no tank), Similarly, when 〇N, control can be performed to drive the operation mode for baking the vaporizer. Also, When the tank mounting detection means is in the ON state, When the fuel amount detection means for detecting the fuel amount is in the OFF state (with fuel), Judging that operation is possible, It can also be controlled to start operation. In addition, When the tank mounting detection means is in the ON state (in the evening state), When the fuel amount detection means for detecting the fuel amount is in the 〇N state (no fuel), Control to stop operation is possible, Alternatively, control for informing the display unit of refueling in the ON state of the fuel amount detection means is also possible. Also, The liquid fuel combustion device according to the present invention, A refueling tank that is removably mounted inside the body, A combustion unit including a vaporization unit that heats and vaporizes the fuel, and a burner that burns the vaporized fuel; An oil feed pump that sends fuel from the refueling tank to the vaporization section, First connecting means for connecting the fuel tank to the oil supply path to the combustion section when the fuel tank is mounted on the main body is provided. Abolished the fuel tank that temporarily stores fuel below the refueling tank, The fuel in the fuel tank is sent directly to the combustion section. According to this configuration, When refueling the refueling tank, refueling can be performed without turning over, Also, With the abolition of the fuel tank, The oil tank can be enlarged by that amount, Alternatively, the size of the main unit can be made compact. In addition to the above configuration, A second connection means is provided to connect the refueling tank to the return oil path from the combustion section when the refueling tank is mounted on the main unit. If Fuel from the vaporizer can be returned to the refueling tank. in this case, If the inner diameter of the return oil path passage pipe is set larger than the inner diameter of the oil supply path passage pipe, The fuel in the pipe can be quickly returned to the fuel tank. If there are two routes, oil transfer route and return oil route, As the first connection method, It consists of an oil transfer joint on the oil supply tank side and an oil transfer joint receiver on the combustion section that is detachable from it. Also, As a second connection method, One example is a return oil joint on the refueling tank side and a return oil joint receiver on the combustion section side that is detachable from this. And The oil supply joint on the oil tank side and the return oil joint are integrated into a joint part on the oil tank side. Also, If the oil transfer joint receiver and return oil joint receiver on the combustion section side are integrated into a combustion section side joint receiver, The joint part and the joint receiving part become compact, Less assembly and processing. The location of the joint on the refueling tank side is There is no particular limitation as long as it is above the refueling tank, When the refueling nozzle is inserted into the tank chamber from above the main unit, When a configuration is adopted in which the joint part and the joint receiving part on the combustion part side are connected, In the refueling tank, No functional components can be placed below the oil transfer joint. for that reason, In effect, the oil transfer joint protrudes from the outer surface of the oil tank, The projected area of the refueling tank increases. Generally, the refueling tank is Because it is formed by joining a U-shaped tank member and a flat tank member in plan view, To reduce the projected area of the refueling tank, Reverse U on the side opposite to the joint processing surface of the refueling nozzle Part of the U-shaped tank member is retracted inward, A configuration in which a joint is provided in the recess is preferable. Also, At the joint of the refueling tank, It is necessary to connect the piping for the suction passage from the fuel tank and the return pipe for returning the fuel to the tank. If provided in the section, Piping can be easily positioned without special jigs. in this case, By connecting the piping inside the oil tank to the joint part on the oil tank side, Piping connection processing is easy, and the processing space is small and good. on the other hand, In the joint receiving part on the combustion part side, There is an oil pump between the combustion unit and If this oil pump is fixed to the same member on the substantially same plane as the joint receiving part on the combustion part side, Assembling and inspection and dimensional control of both will be easy. by the way, Since the fuel in the fuel tank is fed directly to the combustion section, When removing the refueling tank, it is desirable to shut off the fuel securely at the joint and the joint receiving part. Therefore, A valve mechanism is installed in the oil transfer joint and return oil joint at the oil tank side joint, A valve mechanism is installed in the joint receiving part on the combustion part side, It is sufficient to prevent fuel leakage in the oil supply path and the return oil path. in this case, In the joint receiving part on the combustion part side, A structure in which a valve mechanism is installed in both the oil transfer joint receiver and the return oil joint receiver. Or, If there is a shut-off valve or oil pump near the oil transfer joint receiver to shut off the fuel supply, Without providing a valve mechanism in the oil transfer joint receiver, a valve mechanism is installed only in the return oil joint receiver. Any of the configurations to be mounted can be adopted. When this valve mechanism is incorporated in the fuel passage of the connection joint and its joint receiver, An opening for incorporating a valve mechanism; A closing part (valve cap) for closing the opening is provided. A configuration in which the closing portion is screwed into the opening, Alternatively, it is possible to adopt a configuration in which it is closed by another fixing member so that it cannot come out. In another aspect, The connection joint and its joint receiving part are fixed to the refueling tank and combustion part by fixing means, respectively. Using this fixing means, By adopting a configuration that keeps the closing part from getting out of the opening, In addition to eliminating the need for screwing the closed part and other fixing members, This is advantageous in that it can be easily incorporated. In addition, The state of holding the closed part using the fixing means It can be used for one or both of the connection joint part and the joint receiving part. Also, In the middle of the lubrication route, A shut-off valve is provided to shut off fuel supply from the refueling tank to the combustion section, It is desirable to have a configuration that prevents fuel from being inadvertently sent into the combustion section. As a shutoff valve, A valve mechanism that directly shuts off the oil supply path, Alternatively, any configuration using an air valve that opens the oil supply path to the outside air can be adopted, A system using an air valve from the mechanism is preferable. Also, To reliably prevent fuel leakage from the oil supply path, A configuration in which the passage of the oil supply joint connected to the suction passage in the refueling tank is located above the fuel level in the refueling tank; It is preferable to arrange the air intake of the air valve above the fuel level of the fuel tank. In addition, The fuel passage connecting the refueling tank and the oil pump is set up in a U-shape, Make the upper end of the passage above the fuel level in the fuel tank. If you arrange so that It is possible to prevent the fuel in the fuel tank from being inadvertently sent to the oil pump side. This launch passage, Although it can be set at an appropriate place in the piping on the combustion section side, Formed in the joint receiving part on the combustion part side, Also, If the shut-off valve is arranged at the upper end of the rising passage, Space for bending the piping is not required, Fuel supply can be reliably shut off at the compact joint receiving part. on the other hand, In the return oil path, To prevent the fuel in the refueling tank from flowing back through the return oil path due to the rise in temperature due to the temperature rise, It is preferable that the fuel passage of the return oil joint on the refueling tank side and the pipe outlet on the refueling tank side are disposed above the fuel level of the refueling tank. In particular, A configuration in which the pipe outlet on the oil tank side of the return oil joint is arranged upward so as to be above the fuel level of the oil tank. In addition, In the refueling tank, In order to prevent the tank pressure from becoming negative, An air hole is formed on the top of the tank. Fuel may flow out of the air hole when the tank falls, It is preferable to provide a means for closing the air hole when the tank is overturned to reliably prevent fuel leakage. Also, If the refueling tank can be attached to the main body only in one direction when the refueling tank is mounted on the main body, This prevents other parts from being damaged when the tank is installed. Regarding the mounting of this refueling tank on the main body, A protective cover for protecting the shut-off valve integrally fixed to the joint receiving portion on the combustion section side, An impact prevention cover is provided to prevent the impact of the joint on the refueling tank side. When installing the refueling tank body, Insert both covers into the tank If used as a guide, The cover can serve both the function of protecting parts and the function of inserting guides. Also, To detect the water in the refueling tank, A first electrode contacting a water pan provided on the bottom of the tank; Providing a water detection means having a second electrode in contact with the tank; At least one of these electrodes is cantilevered to the detection table, If the electrode is configured to be displaced around a fulcrum other than the fixed part, The stress applied to the electrode can be dispersed. BRIEF DESCRIPTION OF THE DRAWINGS FIG. It is a schematic configuration diagram of a liquid fuel combustion device according to Example 1 of the first embodiment of the present invention, Figure 2 shows It is a front view showing a part of the refueling tank in cross section, Figure 3 shows FIG. Figure 4 shows It is a cross-sectional view showing a fixing structure of the lower end of the suction pipe, Figure 5 shows FIG. 6 is a cross-sectional view of the oil supply cap with a pressure valve of the oil supply tank. It is a cross-sectional view showing a state where the electromagnetic pump and the electromagnetic valve are integrated, Figure 7 shows It is a schematic configuration diagram of a liquid fuel combustion device according to Example 2 of the first embodiment of the present invention, Figure 8 shows It is a schematic configuration diagram of a liquid fuel combustion device according to Example 3 of the first embodiment of the present invention, Figure 9 shows It is a schematic configuration diagram of a liquid fuel combustion device according to Example 4 of the first embodiment of the present invention, FIG. 10 It is a sectional view of an oil feed joint receiver, Fig. 11 shows It is a structure sectional view of an air valve similarly, Fig. 12 FIG. 5 is a schematic configuration diagram of a liquid fuel combustion device according to Example 5 of the first embodiment of the present invention, Figure 13 shows FIG. 9 is a front partial cross-sectional view of an oil fan heater according to a second embodiment of the present invention, Figure 14 shows FIG. 13 is a schematic diagram of the liquid fuel combustion device of FIG. 13, Figure 15 shows FIG. 15 is a schematic view of the fuel tank of FIG. 14, Figure 16 shows The refueling evening refueling join in FIG. 4 is a diagram showing a mounting structure of a lubricating join-out; Figure 17 shows FIG. 14 is a structural diagram of a refueling joint-in in FIG. 14, Figure 18 shows FIG. 14 is a structural diagram of a lubrication joint of FIG. 14 and a suction pipe in a lubrication tank; Figure 19 shows that FIG. 15 is a structural diagram of a lubrication joint out of FIG. 14; FIG. 20 shows FIG. 14 is a structural view of a refueling joint out and a refueling tank in FIG. 14, Figure 21 shows that FIG. 15 is a structural view of a lubrication cap with a pressure valve of the lubrication tank in FIG. 15; Figure 22 shows FIG. 14 is a structural diagram of a refueling join-in receiver and an air valve shown in FIG. 14; Figure 23 shows FIG. 14 is a structural view of a lubrication joint out receiver of FIG. 14; Figure 24 shows FIG. 14 is a structural diagram of the wrench and the wrench of FIG. Figure 25 shows FIG. 14 is a structural view of the heat pump of FIG. 14; Figure 26 shows FIG. 14 is a structural diagram of the cooling fin of FIG. 14; Figure 27 shows (A) is a view of the mounting state of the lubrication joint-in and the lubrication joint-in receptacle without the air valve of the lubrication 1 tank in Fig. 14 Yes, (B) is a front view of the receiving portion 61, Figure 28 Fig. 14 is a view showing the mounting state of the lubrication joint out of the lubrication 1 tank and the lubrication joint out receiver in Fig. 14. Figure 29 shows FIG. 13 is a front partial cross-sectional view of a petroleum fan according to Example 1 of a third embodiment of the present invention, FIG. It is a block diagram of a liquid fuel combustion device similarly, Figure 31 shows It is a schematic diagram of a fuel tank similarly, Figure 32 shows It is a perspective view of the connection part of a refueling evening tank similarly, Figure 33 It is a structure sectional view of an oil supply joint similarly, Figure 34 shows It is a cross-sectional view of the structure of the return oil joint, Figure 35 shows FIG. 3 is a structural cross-sectional view of the oil-feeding-side connecting means, Figure 36 shows It is a structural sectional view of an oil feed joint receiving portion, Figure 37 shows It is a structure sectional view of a return oil side connection means similarly, Figure 38 shows FIG. 16 is a plan view of a connection means according to Example 2 of the third embodiment of the present invention, Figure 39 shows It is also the front view, Fig. 40 FIG. 3 is a cross-sectional view of an oil feed joint side, Figure 41 shows It is a sectional view of the return oil joint side, Fig. 42 shows It is a sectional view of the joint receiving side, Figure 43 shows It is also the front view, Figure 4 FIG. 9 is a front partial cross-sectional view of a petroleum fan tray according to Example 1 of a fourth embodiment of the present invention, Figure 45 shows FIG. Figure 46 shows It is a partial sectional view of a fuel tank similarly, Figure 47 shows FIG. 46 is a sectional view taken along the line B—B in FIG. 46; Figure 48 shows It is a partial cross-sectional view of the suction port of the refueling tank, Fig. 49 FIG. 4 is a cross-sectional view of a lubrication cap with a pressure valve of the lubrication tank. Fig. 50 FIG. 4 is a cross-sectional view of a refueling joint-in receiver, a refueling joint-out receiver, and an air valve; Figure 51 shows It is a sectional view of an air valve, Figure 52 shows FIG. 5 is an explanatory view of mounting a refueling join toin of a refueling tank and a refueling join toy receiver; Figure 53 shows FIG. 44 is a sectional view taken along the line A—A in FIG. Figure 54 shows FIG. 53 is a top view of FIG. 53; Figure 55 FIG. 5 is an explanatory view showing a state where a refueling join ton of a refueling tank and a refueling joint-in receiver are mounted; Figure 56 shows FIG. 5 is an explanatory view of a refueling tank after a refueling joint in and a refueling joint in receiver are mounted. Figure 57 shows It is a perspective view of a refueling tank showing Example 2 of the fourth embodiment of the present invention, Figure 58 shows It is a top view of a fuel tank similarly, Figure 59 shows Similarly, FIG. Fig. 60 It is a top view of a refueling tank showing Example 3 of the fourth embodiment of the present invention, Figure 61 shows Similarly, FIG. Figure 62 shows It is a top view of a refueling tank showing Example 4 of the fourth embodiment of the present invention, Figure 63 shows It is a top view when the impact prevention means is also attached, Figure 64 shows FIG. 14 is a front partial cross-sectional view of an oil fan lounger according to Example 1 of a fifth embodiment of the present invention, Figure 65 It is a block diagram of a liquid fuel combustion device similarly, Figure 66 shows It is a schematic diagram of a fuel tank similarly, Figure 67 It is a perspective view of the connection part of a fuel tank similarly, Figure 68 FIG. Figure 69 It is a cross-sectional view of the structure of the return oil joint, Figure 70 shows FIG. 3 is a structural cross-sectional view of the oil-feeding-side connecting means, Figure 71 shows that It is a structural sectional view of an oiling joint receiving part, Figure 72 shows It is a structure sectional view of a return oil side connection means similarly, Figure 73 shows It is a side view of a refueling tank, Figure 74 shows FIG. Figure 75 It is a sectional view showing a refueling opening state similarly, Figure 76 shows FIG. 4 is a cross-sectional view showing a relationship between a refueling tank and a mounting table, Figure 77 It is a bottom sectional view of a fuel tank similarly, Figure 78 FIG. 3 is a perspective view of the water receiving pan mounting hole of the refueling tank as viewed from the tank interior, Figure 79 FIG. 3 is a control circuit diagram of the liquid fuel combustion device, Fig. 80 FIG. 16 is a perspective view of a fuel filler port of a fuel tank according to Example 2 of the fifth embodiment of the present invention, Figure 8 1 It is a side view of a fuel tank showing Example 3 of the fifth embodiment of the present invention, Figure 82 shows that FIG. 14 is a partial cross-sectional view of a fuel tank showing Example 4 of the fifth embodiment of the present invention, Figure 83 shows An embodiment of the present invention, It is a main body perspective view, Figure 84 shows FIG. 83 is a rear perspective view of the oil fan heater of FIG. FIG. 8 is a schematic configuration diagram of the liquid fuel combustion device of FIG. 83, Figure 86 shows Fig. 83 is a state diagram in which a part of the front plate is cut off in the front view of the main body in Fig. 83; Figure 87 shows FIG. 8 is a schematic diagram of a combustion unit and a vaporization unit in FIG. 83, Fig. 8.8 FIG. 8 is a schematic diagram of the vaporizer of FIG. Figure 89 shows FIG. 83 is a side sectional view of a combustion section of the main body of FIG. 83, Figure 90 shows FIG. 83 is a front view of a combustion section of the main body of FIG. 83, Figure 91 shows FIG. 83 is a schematic view of the fuel tank shown in FIG. 83; Figure 92 shows FIG. 83 is a tank-side top view of the main body of FIG. 83, Figure 93 shows FIG. 9 is a schematic view of an air hole closing means of the fuel tank in FIG. Figure 94 shows FIG. 9 is a schematic view of a connection joint portion of the fuel tank in FIG. Figure 95 shows FIG. 9 is a cross-sectional view of the oil supply side joint of FIG. Figure 96 (A) is an exploded perspective view showing the assembled state of the oil supply side joint and the suction pipe, (B) is a sectional view taken along the line A-A of (a) of FIG. Figure 97 shows FIG. 9 is a cross-sectional view of the return oil side joint of FIG. Figure 98 (A) is an exploded perspective view showing an assembled state of the return oil side joint and the return pipe, (B) is a cross-sectional view taken along line BB of (a) of FIG. Fig. 99 FIG. 9 is a schematic view of a fuel supply port closing means of the fuel tank of FIG. FIG. Water detection means and fuel for the fuel tank in Fig. 91 It is a schematic diagram of a detection means, Figure 101 shows that FIG. 3 is a schematic diagram of a tank mounting detection means of a refueling tank, Fig. 102 FIG. 86 is a schematic view of the detection table on the refueling tank side of FIG. Fig. 103 (A) is a perspective view of the electrode lever on the water tray side of the detection table. (B) is a view showing the same mounting state. Fig. 104 It is a mounting state diagram of the electrode lever on the tank side of the detection table, Fig. 105 It is a schematic diagram of a tank mounting detection means, FIG. 106 It is a top view of a refueling tank storage room, FIG. 107 FIG. 4 is an exploded perspective view of a tank guide and a tank guide fixing member, FIG. 108 It is a front view of a tank guide fixing member, FIG. 109 FIG. 4 is an exploded perspective view showing a connection state between a joint receiving portion and a pipe, Fig. 110 FIG. 4 is a schematic view of a joint receiver on an oil supply side and a pneumatic valve on a combustion section side, Fig. 1 1 1 FIG. 3 is a schematic view of a return oil side joint receiver on a combustion section side, Fig. 1 1 2 (A) is a top view of the connection joint receiving part on the air valve side, (B) is a schematic sectional view of the air valve and the joint receiving portion, Fig. 113 Refueling tank, Connection joint, And a joint receiving section, It is a relationship diagram of the fuel level of the air valve, Fig. 114 FIG. 83 is a block diagram of a control device mounted on the main body of FIG. 83, Fig. 115 Fig. 86 is a schematic diagram of the oil transfer side joint and the joint receiver when the tank is inserted in Fig. 86; Figure 1 16 Fig. 86 is a schematic diagram of the oil-supply-side joint and its joint receiver when the evening-ink is attached, and Fig. 117 Fig. 86 is a schematic diagram of the return oil side joint and the joint receiver when the tank is inserted in Fig. 86; Fig. 118 FIG. 86 is a schematic diagram of the return oil side joint and the joint receiver when the tank is mounted in FIG. 86. Fig. 119 It is a partially omitted front sectional view of a conventional oil fan heater, Fig. 120 FIG. 4 is a schematic side sectional view of the oil fan heater, Figure 1 2 1 FIG. 3 is a cross-sectional view of a main part of a fuel tank and a receiving device. BEST MODE FOR CARRYING OUT THE INVENTION First Embodiment (Example 1) FIG. 1 is a schematic configuration diagram of a liquid fuel combustion apparatus according to the present invention. As shown in the figure, The liquid fuel combustion device 1 of the present embodiment includes: A vaporizing section B1 for heating and vaporizing the fuel; In a rotary atomization type liquid fuel combustion device having a combustion part B integrated with a burner B2 for burning vaporized fuel, A refueling tank 6 that is detachable from the main unit, An oil pump E P for sending fuel from the refueling tank 6 to the vaporizing section B 1, When refueling tank 6 is attached to the main unit, A connecting means C is provided for connecting to the oil supply path T leading to the combustion section B, One below the refueling tank 6 Abolished the fuel tank that stores fuel occasionally, The fuel in the refueling tank 6 is fed directly from the oil pump EP to the combustion section B. The configuration of the rotary atomizing combustion section B is of a known structure as shown in JIS S300, To briefly explain the configuration, Combustion section B A cylindrical vaporized part B 1 with a bottom, A burner B2 that covers the upper surface of the vaporizing section B1 and mixes and burns the fuel vaporized in the vaporizing section B1 with the primary combustion air is integrated. In the bottom hole H at the bottom of the vaporization section B 1 A piping nozzle at the end of the oil supply path is provided, An atomizing motor M and a rotating body R for atomizing the fuel discharged from the nozzle by centrifugal force are provided. further, A combustion air passage A P is connected to the center hole H at the bottom of the vaporization section B 1, Blower F supplies combustion air through combustion air passage AP. Burner B 2 A combustion chamber BR is provided to surround this, Above burner B2, Electrode EL for combustion gas ignition, A flame rod RD for detecting the flame of the burner B2 is provided. Although not shown, In addition, a convection blower is located above the combustion chamber BR, The indoor air sucked into the oil fan heater body is blown out from the outlet on the front of the body as warm air together with the heated air and combustion gas in the combustion chamber BR. Fig. 2 is a front view showing a part of the fuel tank in cross section, FIG. 3 is a sectional view showing the connecting means in the same manner. As shown in the figure, Refueling tank 6 It is formed in a vertical box shape so that it can be removably stored in the tank storage chamber of the oil fan heater. Handle 2 3 for carrying on top of it, A lubrication cap 24 with a pressure valve provided on the same surface as the handle 23; The fuel close to the oil cap with pressure valve 24 An oil gauge 25 extending vertically to make it possible to visually recognize the state of refueling, An oil supply joint 9 of connection means C for connecting to the oil supply path T when the main body of the oil supply tank 6 is mounted; A fuel supply port 26 is provided to supply fuel by loosening the fuel cap 24 with a pressure valve. Connection means C As shown in Figure 3, An oil transfer joint 9 provided on the oil tank side, And an oil transfer joint receiver 10 provided in the oil transfer path T on the combustion section side. These oil transfer joint 9 and oil transfer joint receiver 10 It is located above the maximum fuel level in the fuel tank 6, Fuel overflow from refueling tank 6 is prevented. Oil transfer joint 9 is The upper side of the refueling tank 6 is covered with a protective cover 28 to prevent impact. It is attached by the mounting plate 27 through this protective cover 28, A spindle type valve mechanism 30 is provided inside, A suction pipe 31 is connected to suck up the fuel in the fuel tank 6 and send it to the electromagnetic pump EP for transportation. The suction pipe 3 1 One end extends to near the lower surface of the refueling tank 6, The other end penetrates the upper surface of refueling nozzle 6 and is bent into a substantially inverted U-shape. The tip is connected to the valve mechanism 30 of the refueling joint. The protective cover 2 8 It protects the oil transfer joint 9 and covers the substantially inverted U-shaped communication part of the suction pipe 31 protruding from the upper surface of the oil tank 6. The valve mechanism 30 of the oil transfer joint 9 is Join body 3 3, Disc 3 4, Circular 0-ring packing 3 5, Spring 36, And a joint body packing 37. The joint body 3 3 Expanding a metal pipe into a roto shape, Join on the way A stringing portion 3 3 cl formed in a flange shape to fit the main body 3 3 into the inside of the cover 28, A cylindrical body 3 3 a, A cylindrical taper part (closed surface) 33 b, whose diameter gradually narrows downward from its lower end, At the lower end of the tapered portion 33b, a cylindrical portion 33c maintaining a predetermined diameter and a predetermined length is formed continuously. The lower end of the cylindrical portion 33c is tapered so as to further reduce the diameter. At the upper end of the joint body 3 3, An inner flange is formed, The distal end of the suction pipe 31 is connected to the flange 33e via the joint body packing 37 so as to communicate with the inside of the joint body. In addition, The material of the joint body 3 is not limited to metal, It may be made of resin, Also, Body 3 3 a, The cross-sectional shape and the like of the tapered portion 33b and the cylindrical portion 33c are not limited to circular shapes. The joint body packing 3 7 is molded from rubber, It has a seal function for the joint body 33 and a connection seal function for the suction pipe 31. The valve element 3 4 It has a shape similar to the funnel-shaped inner shape of the joint body 33, The joint body 33 is shaped so that it can reciprocate within the interior. That is, A substantially conical plug (closed surface) 3 4 a and At the lower end of the plug part 34a, it is thinner than the cylindrical part 33c, With a long columnar movable part 3 4 b, A ring-shaped 0-ring packing 35 is provided on the tapered portion of the plug portion 34a so as to be able to pivotally contact the tapered portion 33b of the joint body 33. The length of the movable part 3 4 b is In order to control the connection and disconnection between the stopper part 34a and the taper part 33b of the joint body 33, In the valve-closed state where the sealing packing 35 of the plug part 34a is tightly closed inside the tapered part 33b, The length is set so that the tip protrudes beyond the cylindrical portion 33c. The spring 36 is It is installed in the body 3 3 a of the joint body 3 3, It is interposed between the inner flange 3 3 e at the upper end and the plug 34 a of the valve element 34, The valve element 34 is urged in the valve closing direction. Mounting plate 27 Box-shaped mounting part 2 7a for mounting the impact prevention cover 2 8 An insertion guide section 27b is provided below the guide tank when installing the refueling tank 6. It is welded to the side of the refueling tank 6. Oil transfer joint receiver 10 is At the center, there is a projection 60 that engages with the valve element 34 of the oil transfer joint 9, A valve-receiving body 62 on a cylinder having an annular groove 69 around the oil-transmitting path T, A cylindrical bellows-shaped rubber joint seal member 63 protruding upward from the valve receiving body 62 so as to surround the protrusion 60; A spring 64 interposed between the upper end of the seal member and the valve receiver main body 62 for urging the seal member upward to promote its expansion and contraction; A holding plate 66 for fixing the lower end of the sealing member 63 to the valve receiving body 62 is provided. At the upper end of the sealing member 63, A passage hole 70 that is in close contact with the valve body 34 on the oil transfer joint side is formed. The oil transfer joint receiver 10 With the refueling joint receiving plate 72, It is fixed to the tank guide 71 that defines the tank storage chamber of the device body. Refueling joint receiving plate 7 2 It is bent into a U-shape that opens upward, The oil transfer joint receiver 10 is fixed to the bottom plate, One side plate is fixed to the tank guide 71. The side plate 7 3 bent on the other side (tank side) of the receiving plate 7 2 The tip is rounded, It is a guide part 7 4 when the main body of the oil tank 6 is inserted. Also, On the tank guide side of the receiving plate 72, A resilient guide receiving plate 75 with a curved shape is provided on the refueling tank side. Have been. This guide receiving plate 75 Only its upper side is fixed, When inserting the main unit of refueling tank 6, The guide function is provided so that the oil transfer joint 9 and the joint receiver 10 can be connected smoothly by contacting the protective cover 28 of the oil transfer joint 9. FIG. 4 is a sectional view showing a fixing structure of a lower end portion of the suction pipe. The suction pipe 31 is Reached near the bottom of the lubrication tank 6 opposite the handle 2 3, A suction port 4 4 is provided at the tip, A filter 45 that is impermeable to water and dust is inscribed in the suction port 44. In addition, Suction port 4 4 The suction pipe 31 may be provided on the bottom surface other than the side surface at the tip. This suction pipe 3 1 In the state before the right and left adriyan processing of refueling tank 6, After the filter 1 45 is inscribed in the suction port 4 4, the suction pipe 3 1 is passed through the cutout hole 4 6 a of the suction pipe fixing plate 4 6 Assemble by performing Adriyan processing on the right and left of refueling tank 6. The above-configured suction pipe 3 1 The movement is fixed when the oil tank 6 is carried by the suction pipe fixing plate 4 6. The suction port 4 4 of the suction pipe 3 1 no longer contacts the inner wall of the oil tank 6, The damage can be prevented. FIG. 5 is a sectional view of a refueling cap with a pressure valve in the refueling nozzle. Oil cap with pressure valve 24 A cap 53 screwed into a lubrication port 26 threaded to the outer periphery, which is provided on the upper surface of the lubrication tank 6, and Having a pressure valve mechanism 54, The filler port 26 is screwed through a rubber packing 55. This cap 5 3 has A pressure release hole 5 to release pressure is provided through the center. Sides are threaded, The terminal is curled. Rubber packing 5 5 Acts as a seal between filler port 26 and cap 53 A pressure release hole 57 for releasing pressure is formed at the center. The pressure valve mechanism 54 A valve element 58 disposed in a space between the rubber packing 55 and the top surface of the cap 53; A spring 59 is provided for urging the valve body 58 in the valve closing direction of the pressure release hole 52. This pressure valve mechanism 54 was provided for the following reason. The storage location of fuel to be supplied to refueling tank 6 is generally stored in a cool place. After refueling the refueling tank 6, Because it is used in a room where the temperature is high, The ambient temperature of the oil tank 6 in the main body 1 is high, The air in the space other than the fuel in the fuel tank 6 expands due to the temperature difference, The air pressure rises, The fuel level in the tank 6 may rise and fuel may overflow. To prevent this, a pressure valve mechanism 54 is provided. Also, Conversely, to prevent the oil tank from becoming negative pressure, On the top of rubber packing 55 and cap 53, Diameter 1. Through holes 77, 78 with a small diameter of 5 mm or less are formed to communicate with each other. As shown in Fig. 1, the oil supply path T from the oil supply joint receiver 10 to the combustion section T has an electromagnetic pump EP as an oil supply pump that sends fuel to the combustion section B, and shuts off the fuel supply. A solenoid valve EV is provided as a shut-off valve. The electromagnetic pump EP and the electromagnetic stool 80 may be provided separately in the oil supply path T, but in the present embodiment, both are integrated and disposed in the oil supply path T. FIG. 6 is a sectional view showing a state where the electromagnetic pump EP and the electromagnetic valve EV are integrated. As shown in the figure, the solenoid valve EV is housed in a cylindrical valve body EVI and a valve chamber EV2 of the valve body EV1, and has a zero ring or a leading end to open and close a communication path EV3 with the electromagnetic pump EP. A cylindrical valve EV 4 with a rubber sheet EV 7 attached thereto; a solenoid coil EV 5 arranged around the valve body EV 1 to move the valve EV 4 in the valve opening direction; and a valve. Between the exit side of room EV 2 and valve 4 2 And a coil spring EV6 for urging the valve EV4 in the valve closing direction. A fitting recess EV8 for the electromagnetic pump EP is formed on the inlet side of the valve chamber EV1 via the communication passage EV3, and the convex portion P on the outlet side of the electromagnetic pump EP is formed in the recess EV8 via an O-ring OR. Are fitted and fitted. Further, a pipe connection port T C1 is formed on the valve chamber outlet side of the solenoid valve EV, and a pipe connection port T C2 is also formed on the inlet side of the electromagnetic pump EP. An oil feed pipe Tl connecting the electromagnetic pump EP and the oil feed joint receiver 10 and an oil feed pipe T2 connecting the connection port TCI of the solenoid valve EV and the vaporizing section B1 are made of copper pipe. And form the oil supply route T. The oil feed pipe T 1 connecting the oil feed joint receiver 10 and the electromagnetic pump EP may be a resin pipe. In the oil fan heater with the above configuration, when the fuel in the refueling tank 6 becomes empty, open the lid of the main unit 1, take out the refueling tank 6 with the handle 23, and with the handle 23 on the upper side. Loosen and remove the refueling cap with pressure valve 24 and supply fuel from the refueling port 26 of the refueling tank 6. In this case, the refueling tank 6 is replenished by placing the handle 23 on a flat surface and replenishing the tank.Therefore, it is not necessary to turn the refueling tank 6 upside down. Easy and reliable refueling without fuel contamination. After refueling is completed, open the lid of main unit 1 and set refueling tank 6 with fuel in main unit 1 in place. Then, the insertion guide portion 27 a extending below the mounting plate 27 is guided between the insertion guide 74 extending above the lubricating joint receiving plate 72 and the valve receiving body 62. In addition, the guide plate 7 5 protects the fuel tank 6 with the protective cover 2 8 , The valve element 34 of the oil supply joint 9 is guided and inserted into the passage hole 70 of the oil supply joint receiver 10, and the bellows of the seal member 63 shrinks, thereby The valve body 34 of the oil joint 9 comes into contact with the projection 60 of the valve receiving body 62. When the refueling tank 6 is further inserted into the main body 1, the valve element 34 of the oil supply joint 9 moves upward, the spring 36 becomes compressed, the valve element 34 becomes open, and the oil supply tank is closed. The oil supply path flowing from the suction pipe 31 of 6 to the electromagnetic pump EP of the oil supply path T through the connection means C is formed in an open state. When the power switch is turned on by operating the operation switch (not shown) of the oil fan heater with this tank installed, the solenoid EV5 of the solenoid valve EV is excited, and the valve EV4 opens. Then, the oil supply path T from the electromagnetic pump EP to the vaporizing section B1 side is opened, and fuel is sent to the vaporizing section B1 side through the electromagnetic pump EP. In the vaporizing section B1, the fuel sent by the electromagnetic pump EP is atomized and evaporated by the rotating body R of the centrifugal atomizer, and is blown out from the flame of the upper burner B2, where it is ignited. Burns in the combustion chamber. At this time, based on the difference between the room temperature detected by the room temperature thermistor and the set temperature set from the operation unit, a controller (not shown) controls the drive of the electromagnetic pump EP to control the amount of liquid fuel sent to the vaporization unit B 1. By changing the value, the amount of heat generated by combustion is adjusted appropriately. When combustion is started and the flame sensor detects a flame current equal to or greater than a preset current value, a fan motor (not shown) is energized and the blower fan rotates to suck indoor air. The rotation speed is controlled by a control device. The sucked indoor air is supplied to combustion chamber B In the R, the radiant heat obtained is taken away, and it is blown out into the room from the outlet as warm air together with the combustion gas.The room temperature rises and controls the temperature.When the operation of the main body 1 is stopped, the operation of the electromagnetic pump EP is stopped. At the same time, the solenoid valve EV is demagnetized and closed, and the fuel supply is reliably shut off. Embodiment 2 FIG. 7 is a schematic configuration diagram of a liquid fuel combustion apparatus shown in Embodiment 2. In the present embodiment, an electromagnetic valve EV that shuts off the supply of fuel is disposed closer to the oil supply joint receiver 10 than the electromagnetic pump EP. Also in this case, the electromagnetic valve EV and the electromagnetic pump EP can be integrated to save space and simplify the piping connection process. Other configurations are the same as those in the first embodiment, and a description thereof will not be repeated. Embodiment 3 FIG. 8 is a schematic configuration diagram of a liquid fuel combustion apparatus according to Embodiment 3. In the present embodiment, the electromagnetic pump EP is arranged on the suction pipe 31 side of the oil supply tank 6 rather than the oil supply joint 9 side, and is fixed to the upper surface of the oil supply tank 6 with screws or the like. The suction side of the electromagnetic pump EP is connected to a suction pipe 31, and the discharge side is connected to an oil transfer joint 9 via a pipe. In addition, the solenoid valve EV is disposed in the oil supply path T between the oil supply joint receiver 10 and the vaporizing section B 1 as in the first embodiment. Also in the above configuration, when the refueling tank 6 is mounted on the main unit, the lubricating joint 9 and the joint receiver 10 are connected to form the lubricating path from the lubricating tank 6 to the vaporizing section B1. The fuel can be sent to the vaporization section by the electromagnetic pump EP. The power supply to the electromagnetic pump may be made such that when the detachable oil tank 6 is mounted on the main body, the main body is connected to the power supply by a connection plug (not shown). Other configurations are the same as those in the first embodiment, and a description thereof will be omitted. (Embodiment 4) FIG. 9 is a schematic configuration diagram of a liquid fuel combustion apparatus according to Embodiment 4, FIG. 10 is a cross-sectional view of an oil transfer joint receiver, and FIG. 11 is a structure of an air valve similarly. It is sectional drawing. In this embodiment, an air valve 110 is provided as a shutoff valve for shutting off the fuel supply, instead of the solenoid valve EV used in the first to third embodiments, and this air valve 110 is connected to an oil feed joy. It is installed in the receiver 10. The air valve 110 is used for taking in air for shutting off fuel in the oil supply path from the oil supply tank 6 to the electromagnetic pump 13, and is provided with a groove 69 of the oil supply joint 9 b. A communication path 112 is provided on the combustion section B side, which is branched from an oil supply path T connected to the combustion section B, and is disposed in the communication path 112. Further, the arrangement of the air valve 110 is set to be higher than the maximum liquid level of the fuel in the refueling tank 6 as in the case of the refueling joint receiver 10, and the fuel overflows from the refueling tank 6. Is to be prevented. As shown in FIG. 11, the structure of the air valve 110 has an opening 113 opening on one side to the outside air and a valve chamber 114 communicating on the other side to the communication passage 112. Cylindrical valve body 1 15, a substantially conical valve 1 1 6 which is housed in the valve chamber 1 14 of the valve body 1 15 and opens and closes the opening 1 13, and this valve 1 1 A solenoid coil 1 17 arranged around the valve body 1 15 to move 6 in the valve opening direction, and a valve chamber 1 1 4 Coil spring 118 interposed between the opening side of the valve and the valve element 116 to urge the valve element 116 in the valve closing direction, and is disposed on the closing face side of the valve element 116. A ring 1 19 is provided. This air valve 110 is closed by the control device (not shown) during the operation of the oil fan heater 117 during the operation of the oil fan coil 117, and is turned off when the oil fan heater 110 is stopped. It is demagnetized and opened by the biasing force of the springs 118, so that air that shuts off fuel in the oil supply path T from the oil supply tank 6 to the electromagnetic pump EP is taken into the oil supply path T. The control of the air valve 110 may be opened or closed mechanically or manually, in addition to the above-mentioned electric control. Further, the electromagnetic pump EP is disposed closer to the combustion section B than the oil transfer joint 9b, as in the first and second embodiments. In the above configuration, when the refueling tank 6 is mounted on the main body, the refueling joint 9 and the joint receiver 10 are connected to form a refueling path from the refueling tank 6 to the vaporizing section B1. The fuel can be sent to the vaporization section B1 by the electromagnetic pump EP. When shutting off the fuel supply, by opening the air valve 110, air can be taken into the oil supply path T, whereby the supply of fuel from the oil supply tank 6 can be stopped. Other configurations and operations are the same as those in the first embodiment, and therefore, description thereof will be omitted. Fifth Embodiment FIG. 12 is a schematic configuration diagram of a liquid fuel combustion device according to a fifth embodiment. In the present embodiment, as in the third embodiment, the electromagnetic pump EP is installed on the suction tank 31 side of the oil supply tank 6 rather than the oil transfer joint 9, and as in the fourth embodiment, the fuel pump EP Shut off supply An air valve 110 is used as a valve, and the air valve 110 is disposed in an oiling joint receiver 10. Since these configurations and operations are the same as those of the third and fourth embodiments, description thereof will be omitted. (Other Examples) The present invention is not limited to the above-described embodiment, and it goes without saying that many modifications and changes can be made within the scope of the present invention. For example, in the above embodiment, the power described in the refueling method in the rotary atomization type liquid fuel combustion device is not limited to this, but may be applied to other combustion methods such as a pot type, a pressure spray type, or a jet spray type. Of course, it can be applied. Oil pumps are not limited to electromagnetic pumps as long as they can send fuel, and pumps of other structures can be used. Further, as the closing means for closing the oil supply port of the oil supply tank, an oil supply cap screwed to the oil supply port has been exemplified, but a rotatable opening / closing type oil supply cap may be used. Furthermore, in the above-described embodiment, the configuration in which the pressure valve is attached to the oil supply cap has been exemplified. However, the pressure valve mechanism is not limited to the oil supply cap, and may be a configuration provided in the oil supply joint. Further, in the above-described embodiment, a configuration in which the valve mechanism that opens when the main body of the fuel tank is mounted and closes when the tank is removed is provided only in the oil joint, but such a valve mechanism is provided with the oil joint. A configuration may also be adopted in which it is also provided on the receiver side. As described above, according to the present invention, in a liquid fuel combustion apparatus that employs another combustion method such as a rotary atomization type, a pot type, a pressure spray type, or a jet spray type, the refueling tank is connected to the device main body. When installed on the oil supply, a connection means is provided to connect to the oil supply path to the combustion section. The fuel tank that temporarily stores fuel under the oil tank was abolished, and the fuel in the fuel tank was fed directly to the oil pump that sends the fuel to the combustion section. The fuel tank can be mounted and refueled without turning over the fuel tank, so that the handleability of the fuel tank is improved. [Second Embodiment] An embodiment of the present invention will be described with reference to the drawings. FIG. 13 is a schematic front view of a petroleum fan equipped with the liquid fuel combustion device according to the present embodiment, and FIG. 14 is a schematic diagram of the liquid fuel combustion device. The main body 1 has a front plate 2 detachably provided, a top plate 3 formed integrally with the side surface, an operation unit 4 for operating the operation, an outlet 5 for blowing hot air, A lid 7 is provided on the right side of the upper surface of the top plate 3 to open and close the fuel tank 6 and can be opened and closed. The lid 7 is mounted and fixed on a mounting table 8 that receives liquid fuel when it leaks. As shown in Fig. 13 or Fig. 14, inside the main body 1, a removable fuel tank 6 for temporarily storing fuel, a vaporizer 12 for vaporizing liquid, and vaporization from a fuel tank 6. Electromagnetic pump 13 for sending fuel to the heater 12, a burner 14 for mixing and burning the fuel vaporized by the carburetor 12 and the primary combustion air, and a combustion chamber 15 surrounding the burner 14 And a partition plate 16 for separating the parna 14 and the combustion chamber 15, a parna box 17 for accommodating the parna 14, a heat pipe 18 for storing fuel from the carburetor 12, and a carburetor 1 And a cooling fin 19 for cooling the fuel between the heating pipe 2 and the heat pipe 18. As shown in Fig. 15, the refueling tank 6 has a portable 23, refueling cap with pressure valve 24, oil meter 25, refueling port 26, refueling join toin 9 with built-in valve for opening and closing pipe and passage for sucking up fuel A and a refueling joint out 21 A for sending the return fuel from the vaporizer from the heat pipe 18 to the refueling tank 6 are provided. FIG. 16 is a schematic view of the refueling tank 6 as viewed from an obliquely upward direction. The refueling tank 6 is configured to be detachable, and the refueling join toin 9A and the refueling joint out 21A are respectively provided with the refueling joint toin receiver 10A and the refueling joint to out. It is structured so that it can be attached and detached at the receiver 22A. As shown in FIGS. 15 and 18, the refueling join tonine 9A includes a spindle mechanism valve mechanism 28A and a suction pipe 27A for sucking up the fuel in the refueling tank 6. The refueling joint port 21A is provided with a spindle type valve mechanism 29A and a return pipe 3OA for returning liquefied fuel into the refueling tank 6. The refueling join tongue 9A is screwed into the refueling nozzle 6 via a rubber packing 50A through a mounting hole 47A provided in the refueling tank 6 on the refueling joint 9 side. As shown in FIG. 17 which is fixed, the valve mechanism 28 A is composed of a convex valve element 31 A, a circumferential 0-ring packing 33 A, and a spring 35 A. It is fitted in the recess of the guard 30 OA having a through hole at the bottom of the recess, and is fixed by a lid nut 39 A via a seal packing 37 A. The valve body 31A has a convex portion fitted into a through hole provided at the bottom of the concave portion of the guard 300A via the O-ring packing 33A, and The bush 35A is disposed in a space 302A between the upper part of the valve body 31A and the cover nut 39A. A passage 43A for feeding fuel into the space 302A is provided, and is connected to the suction pipe 27A for sucking up the fuel in the refueling tank 6. As shown in FIG. 18, the suction pipe 27 A extends to near the bottom of the fuel tank 6 through an insertion hole 46 A provided on the upper surface of the fuel tank 6. Is provided with a suction port 44A and a filter 45A. The suction port 44A may be provided on a side surface other than the tip of the suction pipe 27A. As shown in FIGS. 19 and 20, the valve mechanism 29 A has a convex valve body 32 A, a circumferential 0-ring packing 34 A, and a spring. 36 A, which is fitted into the recess of the guard 310 A having a through hole at the bottom of the recess and fixed by the cover nut 40 A via the seal packing 38 A. I have. The valve body 32A has a convex portion fitted into a through hole provided at the bottom of the concave portion of the guard 301A via the O-ring packing 34A. 6A is disposed in a space 303A between the upper portion of the valve body 32A and the lid nut 40A. Further, the return pipe 3OA returning fuel into the fuel tank 6 is provided in communication with the space 303A. The lubricating joint 21A is screwed to the lubricating tank 6 through a rubber packing 51A through a mounting hole 49A provided on the lubricating joint 21 side of the lubricating tank 6. An insertion hole 48 A into which the return pipe 30 A is inserted is provided in the fuel tank 6. Further, as shown in FIG. 21, a lubricating cap 24 with a pressure valve (FIG. 13) provided on the upper surface of the lubricating tank 6 has a threaded outer surface. Oil filler 26, a cap 53 screwed through a rubber packing 55 serving as a seal with the oil filler 26, and a pressure valve mechanism 54. . The refueling port 26 has a hole 300A opened on the same surface as the mounting surface of the refueling joint out 21A, and a wall protruding outward from an end of the hole 300A. The cap 53 is covered with the projecting oil supply port 26 and is locked by a wall 26a. In addition, the side surface of the cap 53 and the wall portion 26a are processed into a shape such that both can be engaged with each other. In particular, FIG. 21 shows an example in which a waveform shape is added. The pressure valve mechanism 54 includes a valve element 58 and a spring 59, and a pressure release hole for releasing pressure is provided near the center of the rubber packing 55 and the cap 53. 56 and 57 are provided. Further, as shown in FIG. 22, the refueling join-in receiver 1OA (FIG. 13) includes a valve mechanism for receiving the valve element 31A of the valve mechanism 28A (FIG. 17). 60 A, a guard 68 A, and a valve receiver 61 A provided with a lattice hole 66 A fitted to the guard. Further, the valve mechanism 6OA includes a valve body 62A, a spring 63A and a sealing ring 64A, and the valve receiver 61A is provided with the valve body 62A. When the lubricating join-in 9A (FIG. 16) is stored in the lubricating join-in receiver 10A, the side portion 6 2A of the valve body 6 2A a is held by the valve receiver 65A of the valve receiver 61A. Further, the lubricating joint-in receiver 10A receives electromagnetic force from a sealing surface 67A for sealing with the valve mechanism 28A of the lubricating joint-in 9A and the lattice hole 66A of the valve receiver 61A. Passage to pump 1 3 6 9 A In the middle of the passage, a passage 70 A communicating with the air valve 20 composed of an electromagnetic coil or the like is provided. As shown in FIG. 23, the lubrication joint out receiver 22A (FIG. 16) receives the valve body 32A of the valve mechanism 29A (FIG. 20). It is composed of a valve mechanism 71 A, a guard 79 A, and a valve receiver 72 A provided with a lattice hole 77 A fitted to the guard 79 A. The valve mechanism 71A includes a valve body 73A, a spring 74A, and a sealing O-ring 75A, and the valve receiver 72A includes the valve body 73A. Plays the role of a stopper for A, and stores the refueling joint out 21A (Fig. 16) in the guard 79A of the refueling joint out receptacle 22A. In this case, the side portion 73a of the valve body 73A is held by the valve receiving portion 72a of the valve receiver 72A. With the above structure, when the refueling ink 6 is set on the main body 1, the valve mechanism 28A of the refueling join toin 9A and the refueling joint out 21A which are connection means are provided. The valve mechanism 29A is mounted at predetermined positions on the refueling joint-in receiver 10A and the refueling joint-port receiver 22A, and the O on the outside of the valve mechanisms 28A and 29A is mounted. The rings 41A (Fig. 17) and 42A (Fig. 19) are the seal face 67A (Fig. 22) of the lubricating joint receiver 10A and the lubricating joint out. The receiver is sealed by the sealing surface 78A (Fig. 23) of the receiver 22A, and it is sealed. During operation, the air valve 20 (FIG. 22) is closed and the air valve 20 is closed by the electromagnetic pump 13 (FIGS. 13 and 14). The liquid fuel in the refueling tank 6 is sent to the carburetor 12, and is opened when the fuel is stopped. Further, the vaporizer 1 2 At the time of air baking cleaning, the air valve 20 is opened, and the electromagnetic pump 13 is driven to send air to the vaporizer 12. (Structures of vaporizer and parner) Fig. 24 is a diagram showing the structure of the vaporizer and parner. As shown in the figure, the vaporizer 12 is composed of a vaporizing element 81 that heats and vaporizes the fuel contained in the main body, a nozzle 82 that ejects the fuel vaporized by the vaporizing element 81, and a nozzle 8 The fuel is supplied to a needle 83 that opens and closes by reciprocating the hole 2, a solenoid valve 84 that is connected to the needle 83 and moves the needle 83, and a vaporizing element 81. It comprises a fuel inlet 85, a return circuit 86 for sending out fuel inside the carburetor 12 when the operation is stopped, and a heat recovery unit 87 for recovering the combustion heat of the parner 14. The vaporizing element 81 is obtained by sintering fine particles of ceramic into a cylindrical shape, and tar generated when the fuel is vaporized is deposited from the surface of the vaporizing element 81 toward the inside. The fuel inlet 85 of the carburetor 12 has a double structure of an outer stainless steel pipe 88 and an inner copper pipe 89. The reason for using the stainless steel pipe 88 is to reduce the heat conduction from the carburetor 12 and to suppress the temperature rise of the fuel entering the carburetor 12. Further, the diameter of the stainless steel pipe 88 is larger than that of the copper pipe, so that heat conduction from the stainless steel pipe 88 to the copper pipe is further suppressed. The tip of the copper pipe 89 extends to a position outside the carburetor 12. The solenoid valve 84 includes an electromagnetic coil 90 wound in a coil shape, a movable piece 91 that can move in the axial direction together with a needle inside the solenoid coil 90, a suction piece 92, and a pressing spring 9. 3 and from The movable piece 9 1 is attracted to and detached from the attracting piece 9 2 by de-energizing the electromagnetic coil 90, and the dollar 8 3 connected to the movable piece 9 1 moves. The hole of the nozzle 82 of the vaporizer 12 is opened and closed. The parner 14 includes a mixing pipe 94 for mixing the combustion gas vaporized by the vaporizer 12 and the primary combustion air, and a flame 95 for burning the mixed combustion gas. (Structure of electromagnetic pump, storage container and cooling fin) As shown in Fig. 14, the electromagnetic pump 13 sucks up the fuel in the fuel tank 6 and sends it to the carburetor 12 side. The control unit controls the fuel discharge amount and the like. FIG. 25 is a sectional view of the storage container. As shown in the figure, the storage vessel 18 remains in the vaporizer 12 during the period from the start of operation to the stoppage due to the stop of the electromagnetic pump 13 and the blocking of the nozzle 82 of the vaporizer 12 in the room temperature control. It is provided for temporarily storing the returned fuel when returning the fuel to the refueling tank 6 for cooling. The container body 96 of the storage container 18 is sealed, and its capacity is set at about 20 C C. This is because, as described above, when the partially vaporized fuel remaining in the vaporizer 12 is returned to the refueling tank 6, it is liquefied to become fuel, but the return of this combustion is approximately 0. 3-0. 5 C C Z times. Assuming that the number of times the electromagnetic pump 13 stops when the amount of combustion changes due to room temperature control when the oil fan heater is operated throughout the day is approximately 10 times, the amount of unreturned fuel per day is about 3 to 5 CC. Therefore, the container body 96 has a capacity (approximately 20 C C) capable of sufficiently storing the return amount. The side of the container body 96 is provided with the combustion gas from the vaporizer 12. An opening 97 is formed, and an outlet 98 of the fuel accumulated in the container body 96 is formed on the upper surface of the container body 96. At the outlet 98 on the upper surface of the container, a pipe 99 reaching the bottom of the container main body 96 is disposed, and the lower end thereof is formed as a trumpet-shaped suction port 200, through which fuel accumulated in the container is exposed. It is easy to be sucked in without generating tension. FIG. 26 is a cross-sectional view of the cooling fin 19 provided on the way connecting the vaporizer 12 and the storage vessel 18. As shown in the figure, the cooling fin 19 is formed by a large number of thin fins 201 formed outside the pipe 202, and the partially vaporized fuel returning from the vaporizer 12 is formed. Plays the role of radiating heat. The refueling join-in receiver 10A and the electromagnetic pump 13; the electromagnetic pump 13 and the vaporizer 12; the vaporizer 12 and the cooling fin 19; and the cooling fin 19 And the heat pipe 18, and the oil pipes 203, 204, 205, 206, and 206 that connect the heat pipe 18 and the respective parts of the refueling join-in receiver 10 A are It is made of steel pipe. The operation of the above configuration will be described. Open the lid 7 of the main body 1 and remove the empty fuel tank 6 (Fig. 13) by holding the hook 23 of the oil tank 6 and pulling the hook 23 upward. In this state, the fuel cap with pressure valve 24 is loosened and removed, and fuel is supplied from the fuel port 26 of the fuel tank 6. When the refueling is completed, the fuel tank 6 with the fuel put into the main body 1 is opened and the cover 7 of the main body 1 is opened, and set at a predetermined position. As shown in FIGS. 27 and 28, The valve mechanism 28 A of the refueling joint toin 9 A and the valve mechanism 29 A of the refueling joint outlet 21 A, which are connecting means of the refueling tank 6, Each of the valve bodies 31A and 32A is connected to the valve mechanism 60A of the lubricating join-in receiver 10A and the valve mechanism of the lubricating joint-out receiver 22A as connecting means. When the respective valve bodies 62A, 73A of 71A are pressed, the valve bodies 62A, 73A are lowered, and the side portions 62a of the valve bodies 62A, 73A are lowered. , 73a correspond to the bearing portions 65A, 72A of the valve body bearings 61A, 72A, and the valve mechanism 28A of the lubricating joint 9A and the lubricating joint out. G The respective valve elements 31A and 32A of the valve mechanism 29A of 21A move upward, and the biased springs 35A and 36A are compressed. The closing surfaces of the valve bodies 31A and 32A are provided between the ring packings 33A and 34A between the lubricating joint-in 9A and the lubricating joint-out 21A. A pause, Passage route is by Ri fuel in the gap flows into the electromagnetic pump 1 3 side from the heat pump 1 8 to the oil supply tank 6 is made form. Next, when the power switch is turned on by operating the operation switch (not shown) of the oil fan heater, the vaporizer heater (not shown) attached to the vaporizer 12 causes the vaporizer 1 to operate. 2 is heated. 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. The liquid fuel in the refueling tank 6 is sucked up through the suction pipe 27A, and the refueling join toin 9A and the refueling join tonine receiver 1 OA are connected to the vaporizer 1 via the OA. Sent to 2. The liquid fuel is gasified by the heated vaporizer 12, is blown out from the burner port 95 of the burner 14, is ignited at the burner port 95, and burns in the combustion chamber. This At this time, the controller 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 to be sent to the carburetor 12. By changing it, the calorific value of combustion is adjusted appropriately. Then, when the flame sensor detects a flame current equal to or greater than a preset current value after the combustion is started, power is supplied to the fan motor, the blower fan rotates, and the room air is sucked. The rotation speed is controlled by the control device. The sucked air in the room deprives the radiant heat in the combustion chamber 15, and is blown out together with the combustion gas as warm air from the outlet 5 to the outside (room) of the main body 1 to increase the indoor temperature. The Rukoto. Next, when the operation of the main body 1 is stopped, the drive of the electromagnetic pump 13 is stopped, and the energization of the carburetor heater is stopped. At the same time, when the energization of the solenoid valve 84 is turned off and the movable piece 91 and the suction piece 92 are opened, and the hole of the nozzle 82 is closed by the needle 83, Partially vaporized fuel remaining inside the vaporizer 12 passes through the return port 86 (FIG. 24) and passes through the oil supply pipe 205 (FIG. 14). It is stored in the heat pump 18. In the cooling fin 19 provided between the oil supply pipe 205 and the oil supply pipe 206, the partially vaporized fuel having a high temperature is radiated and sent to the heat pipe 18. It is possible. The temperature of the partially vaporized fuel sent into the heat pipe 18 decreases over time, and the fuel changes from gas to liquid and is stored. At the time of ignition, the nozzle 82 is closed until the fuel changes from liquid to gas in the vaporizer 12 (about 1 to 2 minutes). The internal pressure in 2 is about 0. Rise to 2 kg / cm, The pressure is applied inside the heat pipe 18, The liquid in the heat pipe 18 is pushed up to send the liquid from the trumpet-shaped port 200 at the lower end of the pipe 99 (FIG. 25) provided inside the heat pipe 18. The oil pipe 200 (FIG. 14) passes through the passage 80 A (FIG. 23) of the refueling joint out receptacle 22 A through the passage 80 A (FIG. 23) of the refueling joint out 21 A It is fed into the refueling tank 6 via a return pipe 30A (FIG. 20). or, When the liquid fuel is heated inside the vaporizer 1 2 to vaporize the fuel, impurities are generated, During long-term operation, impurities accumulate inside the vaporizer 12 and the amount of gas ejected from the nozzles 82 of the vaporizer 12 decreases. In order to remove impurities deposited inside the vaporizer 12, The empty baking cleaning of the vaporizer 12 is performed in the following procedure. With the refueling tank 6 set in the main body 1, When the baking cleaning switch is set to 0 N, The temperature of the vaporizer 12 is automatically increased to the baking cleaning temperature, At the same time, the air valve 20 (FIG. 14) is energized to be opened and the electromagnetic pump 13 is driven. At that time, Since the pressure of the air entering from the air valve 20 is higher than the pressure in the refueling tank 6, After air is sucked from the air valve 20, It is sent to the vaporizer 12 by the electromagnetic pump 13. And The impurities in the vaporizer 12 are removed by baking for a certain period of time together with the air sent into the vaporizer 12. According to this method, In order to draw air into the electromagnetic pump 13, The inside of the carburetor 12 can be easily cleaned without the trouble of removing the fuel. According to the present invention as described above, During operation stop, The air Open the valve, By performing baking cleaning of the vaporizer to remove impurities accumulated in the vaporizer, Cleaning of the vaporizer can be easily done without removing the oil tank from the main unit. or, The fuel in the fuel path can be shut off by the air valve. or, No fuel spills when falling. or, Partially vaporized fuel can be changed to liquid and returned to the fuel tank. or, The refueling tank is provided with a refueling cap that also serves as a lid and a valve mechanism to release pressure. Fuel does not overflow even if a temperature difference occurs. or, By disposing the refueling joint of the connection means above the fuel level of the refueling tank, The fuel in the refueling evening tank does not overflow. or, A passage communicating with the refueling joint of the connecting means is provided inside the refueling tank, By installing a dust filter at the end of the passage, No suction of water or dust. or, By providing a means for cooling the fuel in the passage in the middle of the fuel passage returning the fuel from the carburetor to the heat pump, The temperature of the fuel returned from the vaporizer can be reduced. Third Embodiment (Example 1) FIG. 29 is a schematic front view of a petroleum fan equipped with a liquid fuel combustion device according to a third embodiment of the present invention, FIG. 30 is a schematic diagram of a liquid fuel combustion device. As shown, Oil fan Hey Yu body 1 Box shaped Thing, A front plate 2 detachably provided, A top plate 3 integrally formed with the side, An operation unit 4 for operating the driving operation, Outlet 5 that blows out hot air, An openable and closable lid 7 is provided on the right side of the top surface of the top plate 3 to access the oil tank 6 A. In the unlikely event that this body The liquid fuel is mounted and fixed on a mounting table 8 which receives the liquid fuel when it leaks. Inside of main unit 1 As shown in Fig. 29 and Fig. 30, By the tank guide 11 and the partition 16 A tank storage chamber la that houses the refueling tank 6 A, A function part storage chamber 1 b for storing the vaporizer 12, the electromagnetic pump 13, etc. It is divided into a combustion chamber 1 C in which a parner 14 and a combustion chamber 15 are arranged. In tank accommodation room 1a, 6 A removable cartridge refueling tank for temporary fuel storage, Oil supply side connecting means 9 A, which removably connects oil supply path 300 for supplying the fuel in oil supply tank 6 A to the carburetor side and oil supply tank 6 A, 1 0 A, Return oil side connection means 2 1 B, which removably connects the return oil path 301 to return fuel from the carburetor 2 to the oil supply tank 6 A and the oil supply tank 6 A 22 A is arranged. At the bottom of the tank chamber l a, When storing the refueling tank, Connection means 9 A, 10 A and 21 B, A cushioning mounting table 1 d is provided to absorb and mitigate the impact on 22 A. Also, In the tank chamber l a, When storing the refueling tank 6 A, Oil supply side connection means 9 A, 1 0 A and return oil side connection means 2 1 B, 2 Make sure that 2 A It is preferable to form a guide portion. The oil supply side connection means Oil transfer joint 9 A with a built-in valve to open and close the suction pipe and passage, The oil joint 10A is configured to receive a valve of the oil joint 9A. Oiling joint At 10 A, An air valve 20 is connected to the oil supply path to shut off the oil supply path 300 supplied from the oil supply tank 6 A to the electromagnetic pump (oil supply pump) 13. This oil transfer joint receiver 10 A It is mounted on the wall of the evening guide 11 whose upper part protrudes toward the functional component storage room. Functional component accommodation room 1 b Which is disposed between the tank storage chamber 1a and the combustion section chamber 1c, A vaporizer 1 2 that vaporizes the fuel from the refueling tank 6 A, An electromagnetic pump 13 that sends fuel from the fuel tank 6 A to the carburetor 1 2, A storage vessel 18 for storing partially vaporized fuel from the vaporizer 1 2, A cooling fin 19 for cooling partially vaporized fuel is accommodated between the vaporizer 12 and the storage vessel 18. The combustion chamber l c is Divided by a partition plate 16 A parner 14 for mixing and burning the fuel vaporized by the vaporizer 12 and the primary combustion air, A combustion chamber 15 surrounding a burning parner 14; A parner box 17 for accommodating a burner 14 is accommodated therein. The carburetor 12 and the wrench 14 constitute a combustion section for burning fuel. Oil transmission path 300 Oil transfer joint receiver 1 O Piping connecting A to electromagnetic pump 13 And a pipe 204 connecting the electromagnetic pump 13 and the vaporizer 12. Also, Return oil path 3 0 1 Piping 205 connecting the vaporizer 12 to the cooling fin 19 Pipe 206 connecting cooling fin 19 and storage vessel 18 And a pipe 207 connecting the storage vessel 18 and the return oil joint receiver 1 OA. These pipes 203 to 207 are all formed of copper pipes. In addition, The piping from piping 6 A to the electromagnetic pump 13 and the piping 2 07 Pipes made of resin or the like other than copper pipes may be used. Fig. 31 is a schematic diagram of the refueling tank, Fig. 32 is a perspective view showing the connection part of the fuel tank, Fig. 33 is a sectional view showing the connection between the oil supply joint and the suction pipe in the oil supply nozzle. Fig. 34 is the structural diagram of the return oil joint. As shown, Refueling tank 6 A Conductive metal materials (for example, Formed into a vertical box shape by zinc plating Handles 2 3 installed on the top of the tank to carry fuel and carry, A fuel supply port 26 disposed on the upper surface where the handle 23 is provided; Oil filler cap 24 with rubber packing closing this oil filler port 26, It is provided on the side near this filler port 26, A total oil amount of 25 that makes it possible to visually confirm the state of fuel supply, On the upper surface where the handle 23 is provided, An oil supply joint 9A and a return oil joint 21B are provided on the opposite side of the oil supply port 26. Oil transfer joint 9 A As shown in Fig. 33, A horizontal L-shaped connecting pipe 43A projecting from the top of the refueling tank 6A to the tank side, A joint body 9Aa having a spindle mechanism valve mechanism 28A provided at the end of the connection pipe 43A is provided. The joint body 9 A a Formed into a vertical cylindrical shape, On its lower surface is formed a cylindrical small-diameter protruding cylinder 9 Ab that fits on the oil transfer joint receiver 10 A side, A 0-ring 41 A for a connection seal is fitted around the outer periphery. Also, An openable / closable cover nut 38A for inserting the valve mechanism 28A is screwed into the upper end opening of the joint body 9Aa. The valve mechanism 28 A in the joint body 9 A a The center valve hole 9 Ac of the small-diameter projecting cylinder 9 Ab of the joint body 9 A a, In the joint body Spindle-shaped valve element 31 A that can be freely attached to and detached from the inverted conical valve seat 9 A d formed at the bottom of A spring 35A interposed between the upper end of the valve body 31A and the lid nut 38A to urge the valve body 31A in the valve closing direction; A sealing ring 33 A fitted to the valve seat 31 A peripheral surface of the valve body 31 A; In the valve closed state, the lower end of the valve element 31A projects downward from the small-diameter projecting cylinder 9Ab. Connection tube 4 3 A A suction passage 43a communicating with the valve chamber in the joint body 9Aa is formed therein, The end protruding to the side of the tank is integrally connected to the side of the joint body 9Aa. The lower end of the connection pipe 43A is inserted into the tank through the insertion hole 46A on the top of the oil tank 6A. A flange 43b formed at a lower portion is fixed to a hole 47A on the upper surface of the oil supply tank 6A by a screw via a rubber packing 5OA. A male screw is engraved on the outer peripheral surface of the lower end of the connecting pipe 43A, The upper end of the suction pipe 27 A in the refueling tank is screwed to this male screw. The suction pipe 27 A is Reached near the bottom of refueling tank 6 A, A suction port 45 A formed on the lower side surface is provided with a filter 45 A that is impermeable to water and dust. The suction port 44A may be provided on the bottom surface of the lower end of the suction pipe 27A. This suction pipe 27 A Oil tank 6 A right 左 left adriyan Before machining, After the filter 45 A is inscribed in the suction port 44 A, the suction pipe 27 A is passed through the notch hole 50 a of the suction pipe fixing plate 50 formed in a crank shape, After that, the right and left adriyan machining of the refueling tank 6A is performed to assemble. This suction pipe 27 A is Since it is fixed by the fixing plate 50, The movement is restricted when carrying the refueling tank 6 A, Suction pipe 27 A suction port 4 4 A is refueled No longer touches the inner wall of Link 6 A, The damage can be prevented. on the other hand, Return oil joint 21 B As shown in Fig. 34, It is installed side by side on the upper surface of the refueling tank 6A together with the refueling joint 9A. The point where the suction pipe 27 A is not connected, And the provision of a pressure valve mechanism 700 of the refueling tank 6 A, The structure is basically the same as that of the oil transfer joint 9A. Therefore, Structures other than the above differences will be briefly described. Return oil joint 21 B As shown in Fig. 34, A horizontal L-shaped connecting pipe 30 A projecting from the top of the refueling tank 6 A to the tank side, And a joint body 21a provided with a spindle mechanism 29A at the end of the connection pipe 3OA. The joint body 2 l a Formed into a vertical cylindrical shape, On its lower surface, a cylindrical small-diameter projecting cylinder 2 lb that fits on the return oil joint receiver 22 A side is formed, An O-ring 42 A for connection seal is fitted around the outer peripheral portion. Also, An openable / closable cover nut 40A for inserting the valve mechanism 29A and the pressure valve mechanism 700 is screwed into the upper end opening of the joint body 21a. The valve mechanism 29A in the joint body 21a is The center valve hole 2 1c of the joint main body 2 1a of the small-diameter projecting cylinder 2 lb, A spindle-shaped valve element 32 A, which can be freely attached to and detached from an inverted conical valve seat 21 d formed at a lower portion in the joint body; A spring 36 A for urging the valve body 32 A in the valve closing direction; It has a sealing 0-ring 34 A fitted to the valve seat 32 A on the valve seat side peripheral surface. The valve body 32A has a lower end that is closed and protrudes downward from the small-diameter projecting cylinder 21b. Also, Pressure valve mechanism at upper end 70 A push rod 709 capable of pressing the zero ball valve element 703 is formed. Spring 36 A is It is interposed between the upper surface of the valve body 32A and the lower surface of the valve seat body 720 of the pressure valve mechanism 700 described later. Connecting tube 3 O A A return passage 30a communicating with the valve chamber in the joint body 21a is formed therein, The end protruding to the side of the tank is integrally connected to the side of the joint body 21a. The lower end of the connecting pipe 3 O A is inserted into the tank through the insertion hole 48 A on the top of the oil tank 6 A, A flange 30 b formed at a lower portion is fixed to a hole 49 A on an upper surface of the oil supply tank 6 A by a screw via a rubber packing 51. In the present embodiment, In order to prevent the air pressure in the tank from rising due to the temperature difference between the inside and outside of the refueling tank 6 A, and the liquid level in the tank from rising, causing a fuel leak, A pressure valve mechanism 700 is provided at the return oil joint 21B. This pressure valve mechanism 700 A valve seat 70 2 with a cylindrical valve hole 70 1 disposed above the valve 32 A; A ball valve 703 which can be freely attached to and detached from the closing surface in a valve chamber above the valve hole 701 of the valve seat body 702; A spring 704 for urging the ball valve 703 toward the seating side, And a cover nut 40A for positioning the valve seat body 702 in the joint body 21a. For the lid nut 40 A, A pressure relief hole 705 is formed in the center of the hole, Spring 704 It is interposed between the ball valve 703 and the lid nut 40A. The valve hole 7 0 1 The diameter of the push rod 7 09 of the valve body 32 A is set so that it can penetrate. Return oil joint 21B is fitted and connected to return oil joint receiver 22A (Fig. 32). When the disc 3 2 A is pushed upward, Push rod 7 0 9 passes through valve hole 7 0 1 And push up ball valve element 70 3 to open valve hole 70 1, The inside of the tank and the pressure release hole 705 of the lid nut 4OA communicate with each other via the connection pipe 3OA. The oil transfer joint 9 A (FIG. 32) and the return oil joint 21 B are In each case, the valve body of the joint body 31 A, 3 2 A is set downward and And placed at the same level, An oil feed joint receiver 10A and a return oil joint receiver 22A, which are arranged facing upward and facing upward, are fitted and connected in the vertical direction. Therefore, Simply install refueling tank 6A from above tank chamber 1a, Both connection means 9 A, 10 A and 21 B, 22 A can be connected smoothly. The first connection means on the oil supply side and the second connection means on the return oil side are: With the oil tank installed, It is located above the fuel level of the fuel tank in the refueling tank. It is designed to prevent a tank full of fuel from overflowing from the tank. Fig. 35 shows the connection means 9 A, Configuration diagram of 10 A, Fig. 36 shows the structure of the oil transfer joint receiving part. FIG. 37 is a structural diagram of the return oil side connection means. As shown, In the tank chamber l a (Fig. 29), With the refueling tank 6 A tank stored, An oil transfer joint receiver 10A and a return oil joint receiver 22A (FIG. 32) are arranged below the oil transfer joint 9A and the return joint 21B. Oil transfer joint receiver 1 O A As shown in Fig. 35, A cylindrical receiving section 61A opening at the upper surface of the cylindrical receiving main body 10Aa and having a circular cross section that allows the lower end small-diameter projecting cylinder 9Ab of the oil transfer joint 9A to intervene, Oil receiving joint 9 A valve mechanism arranged in this receiving part 6 1 A 28 A valve A valve mechanism 60 A that opens and closes by contact and separation with the body 31 A is provided. At the upper end of the concave receiving portion 61A, an annular sealing surface 67A that can be in close contact with the periphery of the small-diameter projecting cylinder 9Ab of the oil feeding joint 9A is formed. Also, On the bottom of the receiving part 61 A, a valve receiving part 68 A is recessed, The valve receiver 65 A is fitted to the valve receiver housing 68 A. The valve bearing 6 5 A A valve hole 60b communicating with a valve chamber 60a formed at a lower portion of the receiving body 10Aa is formed, A lattice-shaped passage 66 A around which fuel flows is formed. Valve mechanism 6 O A A valve body 62A, which is freely detachable from and seated on the valve seat of the valve chamber 60a and whose upper end projects through the valve hole 60b to the receiving portion 61A side; Interposed between the head of this valve body 62A and the valve receiver 65A, A spring 63 A that urges the valve body 62 A in the valve closing direction, The valve body 62A is formed of a ring 64A which is fitted on the valve chamber 60a side of the valve body 62A and seals the space between the valve body and the valve seat. This valve mechanism 60 A The valve body 3 3 A of the lubrication joint 9 A opens when the head of the valve body 62 A on the receiving side comes into contact with the valve body. The valve closes when it is separated from the head of the valve body 6 2 A. In the lower part of the valve body 60 a of the receiving body l O A a, A passage 69 A (FIG. 36) communicating with the piping 203 connected to the electromagnetic pump 13 (FIG. 30) is formed. Also, On the side of the valve chamber 60a, The passage 7OA of the air valve 20 is connected. This air valve 20 and passage 70 A The fuel tank is located above the liquid level when the fuel in the tank is full, The fuel from the tank can be prevented from overflowing. The air valve 20 is Oil supply from oil tank 6 A to electromagnetic pump 13 It is provided to take the air that shuts off the fuel in the path 300 into the oil supply path 300, Valve 20 a located in the air intake passage of the valve body, An electromagnetic coil 20 which is arranged on the outer periphery of the valve body and moves the valve 20 a in the valve closing direction of the passage 7 O A by excitation thereof; A spring 20c for urging the valve 20a in the valve opening direction is provided. The operation of this air valve 20 is During operation, the air valve 20 is closed, Also, During stop, it is open and plays the role of taking in the air that shuts off the fuel in oil supply path 300. Also, The air valve 20 is At the time of empty bake cleaning of the vaporizer 1 and 2, the air is sucked in as open. It also drives the electromagnetic pump 13 to send air to the vaporizer 12. on the other hand, Return oil joint receiver 2 2 A The structure is basically the same as that of the oil transfer joint receiver 10 A except that the air valve 20 does not exist. Therefore, To briefly explain the structure, Return oil Joint receiver 22 A As shown in Fig. 37, A concave receiving portion 7 2 A formed on the upper surface of the receiving body 22 a; A valve mechanism 71A is provided in the receiving portion 72A and opens and closes by contact pressure and separation with a valve mechanism 32A of the return oil joint 21B of the return oil joint 21B. An annular sealing surface 78 A is formed at the upper end of the receiving portion 72 A, Also, A valve receiver 76A is fitted into a valve receiver housing part 79A recessed on the bottom surface of the receiver 72A. The valve bearing 7 6 A A valve hole 7 1b communicating with the lower valve chamber 7 1a of the receiving body 2 2a is formed, There is a grid-like passage 77 A around which fuel flows. The valve mechanism 7 1 A A valve body 73A, which is freely detachable and seatable on the valve seat of the valve chamber 71a and whose upper end projects through the valve hole 71b to the receiving section 72a side, This valve It is interposed between the head of 7 3 A and the valve receiver 7 2, A spring 74 A for urging the valve body 73 A in the valve closing direction; The valve body 73 A of the valve body 7 1 a side is fitted with a sealing 0 ring 75 A, which is tightly fitted to the outside. Return Oil joint 2 1 B valve body 3 2 A opens by contact pressure of the head of receiving valve body 73 A, The valve closes when separated from the head of valve body 73A. At the bottom of the valve chamber 7 1a of the receiving body 2 2a, A passage 8 O A communicating with the pipe 200 connected to the storage container 18 is formed. Refueling tank 6 A and connecting means 9 A, 10 eight and two eighteen, In the 2 2 A configuration, When refueling tank 6A is set from above into tank storage chamber 1a of main body 1, The oil transfer joint 9 A and return oil joint 21 B of the connection means Oil joint receiver 10 A and return oil joint receiver 22 9 A a, 2 l a small diameter protrusion 9 A b, 2 1 (Fig. 33, 0 ring 4 1 A, outside of (Fig. 34) 4 2 A is sealed by the oil feed joint receiver 1 O A seal surface 67 A and the return oil joint receiver 22 A seal surface 78 A to be hermetically sealed. at the same time, Valve mechanism of each joint 28 A, 2 9 A and its receiving valve mechanism 6 O A, 7 1 A valve elements press each other, The valve is opened. In addition, Return oil joint 2 1 On the B side, By opening the valve 32 A, The valve 3 2 A moves upward, Since the upper push rod 709 moves upward from the valve hole 701 of the pressure valve mechanism 702 and pushes up the ball valve 703 upward, Open the valve hole 70 1. for that reason, A communication passage is formed from the inside of the tank through the connection pipe 3 O A and through the valve hole 701 and the pressure release hole 705 in the joint body 21 a, Make the tank internal pressure equal to the tank external pressure, Fuel leakage due to temperature rise in the tank Can be prevented. Vaporizer 1 2 and Pana 1 4, Electromagnetic pump 1 3, Reservoir 1 8, For the configuration of the cooling fins 19, It is the same as the previous configuration, Description is omitted. (Operation of Oil Fan Heater) The operation of the oil fan heater will be described. Open the cover 7 of the main unit 1 with the empty refueling tank 6 A, After holding the handle 2 3 of the refueling tank 6 A and taking it out, With the handle 23 up, open the fueling cap 24 and supply fuel through the fueling port 26. Once refueling is complete, Open the lid 7 of the main unit 1 with the fuel tank 6 A filled with fuel, Set in place. Then, As shown in Fig. 35 and Fig. 37, Refueling tank 6 A oil supply joint 9 A valve mechanism 28 A and return oil joint 2 1 B valve mechanism 29 9 A valve element 3 1 A, 3 2 A Oil transfer joint receiver 1 O A valve mechanism 60 A and return oil joint receiver 22 A valve mechanism 71 A each valve element 6 2 A, 7 Hold 3 A, Valve 6 2 A, 7 Lower 3 A. These valves 6 2 A, 7 3 A head 6 2 a, 7 3a is valve receiver 6 1 A, 7 2 A Oil transfer joint 9A valve mechanism 28A and return oil joint 21B valve mechanism 29A each valve element 31A, 3 2 A moves upward, Spring 3 5 A biased in valve closing direction, 3 6 A becomes compressed, Valve body 3 1 A, 3 2 A closing surface 0 ring 3 3 A, There is a gap between the closing surface of the oil transfer joint 9 A and the return oil joint 21 B of 34 A, An oil supply path 300 through which fuel flows from the gap to the electromagnetic pump 13 side, The return oil path 301 from the storage container 18 to the oil supply tank 6A is opened. Operate the oil fan operating switch (not shown) to power If に N By the vaporizer heater (not shown) attached to the vaporizer 12, The vaporizer 12 is heated. At this time, The temperature of the vaporizer 12 is detected by a vaporizer (not shown). When the vaporizer 12 is heated to a predetermined temperature, The electromagnetic pump 13 is driven to draw up the liquid fuel in the refueling tank 6 A through the suction pipe 27 A, Oil transfer joint 9 A, It is sent to the vaporizer 12 via the oil transfer joint receiver 10A. The liquid fuel is gasified by the heated vaporizer 1 2, It is blown out from the flame 9 5 of the burner 1 4, The fuel is ignited at the flame port 95 and burns in the combustion chamber 15. At this time, The room temperature detected by the room temperature sensor 15 3 (thermistor) Based on the difference from the set temperature set by the room temperature setting switch The controller 950 controls the drive of the electromagnetic pump 13 to change the amount of liquid fuel sent to the carburetor 12, Adjust the calorific value of combustion appropriately. Combustion starts, When the flame sensor detects a flame current higher than the preset current value, The fan fan is energized in the evening and the blower fan rotates to suck indoor air. In addition, The rotation speed is controlled by the control unit. The inhaled indoor air is Takes radiant heat obtained in combustion chamber 15 As hot air with the combustion gas, it is blown out of the body 1 from the outlet 5 (indoor), The room temperature rises and controls at the optimal temperature. (Embodiment 2) FIG. 38 is a plan view of the connection means of Embodiment 2, Fig. 39 is the same front view, Fig. 40 is a sectional view of the lubrication joint side. Fig. 41 is a cross-sectional view of the return oil joint side. Fig. 42 is a cross-sectional view of the joint receiving side. FIG. 43 is a front view of the same. As shown, In this embodiment, In the connection means on the oil supply side and the connection means on the return oil side, Combine oil transfer joint 9 A and return oil joint 21 C, Also, The point where the oil transfer joint receiver 10 A and the return oil joint receiver 22 A and the air valve 20 are integrated, The point that a protective cover 800 is provided as an impact prevention means at the oil transfer joint 9 A and the return oil joint 21 C Return oil joint 2 1C ball valve 70 2a Example 1 differs from Example 1 in that the valve mechanism of the oil joint receiver 1 O A was eliminated. In other respects, the configuration is basically the same as that of the first embodiment. Therefore, Only the above differences will be described in detail. As shown, The oil transfer joint 9 A and the return oil joint 21 C are It is installed side by side on the upper side of the refueling tank 6 A, The oil tank side of these joint bodies 9 Aa and 21 a is integrated by the connecting plate 800, This connecting plate 800 is screwed to the side wall of the oil supply tank 6A via a sealing member 802. Also, A substantially U-shaped reinforcing plate 8004 is covered so as to surround the three sides of the oil transfer joint 9A and the return oil joint 21C, and is fixed to the connecting plate 801, further, A resin protective cover — 800 — is in contact with its outer surface and is fixed to the reinforcing plate 800 by screws 806, The impact on the oil transfer joint 9A and the return oil joint 21C is reduced. Therefore, When carrying the refueling tank 6 A, Alternatively, the joint part can be protected from impact when the fuel tank 6A is mounted on the main body. on the other hand, Oil transfer joint receiver 10 A and return oil joint receiver 22 A also It is juxtaposed on the wall of the tank storage room, These joint bodies 10 Aa, 2 2 a is also integrated by the connecting body 8 1 0, Further, an air valve 20 connected to the valve chamber of the oil transfer joint receiving body 1OAa through a communication passage 7OA is also integrally connected to the receiving body 1OAa. However, Oil joint receiver 1 O A A cylindrical receiving main body 1 O A A opening at the upper surface of a a and a concave receiving part 61 A having a circular cross section which allows the lower end small-diameter projecting cylinder 9 A b of the oil feeding joint 9 A to intervene; The receiving portion 61A projects upward from the center and is protruded upward from the center. The valve mechanism 28A of the oil transfer joint 9A is brought into contact with the valve body 31A of the oil transfer joint 9A and the valve mechanism 28A of the oil transfer joint 9A. And a projection 8 1 2 for opening the valve. An annular groove 8 13 around the projection 8 1 2 has a communication passage 7 O A to the air valve 20, A communication path (not shown) to the electromagnetic pump 13 is formed. The structure and function of the return oil joint receiver 22A are basically the same as those of the first embodiment. However, Of the valve mechanism 71 A installed inside the return body 22 a of the return oil joint receiver 22 a, The spring 63A, which urges the valve body 62A in the valve closing direction, The difference is that the valve body 60a of the receiving body 22a is interposed between the bottom wall and the valve body 62A. This valve mechanism 7 1 A When removing the refueling nozzle 6 A from the main unit, This is provided to prevent the unburned fuel from leaking from the carburetor 1 and 2, Thereby, generation of odor can be prevented. Refueling tank 6 A and connection means 9 A, In the 10 A and 2 122 A configurations, When refueling tank 6A is set from above into tank storage chamber 1a of main body 1, The oil transfer joint 9 A and the return oil joint 21 C of the connection means Oil transfer joint receiver 10 A and return oil joint receiver 22 Each joint body 9 A a, 2 1 a small diameter protrusion 9 A b, 2 O-ring outside 1 b A 4 1 A, 42 A is sealed by the seal face 67 A of the oil feed joint receiver 10 A and the seal face 78 A of the return oil joint receiver 22 A to be in a sealed state. at the same time, The valve mechanism 28 A of the lubricating joint 9 A is pressed against the valve body of the receiving valve mechanism 60 A to open the valve, Also, The valve mechanism 29 A of the return oil joint 21 C is pressed by the valve elements of the receiving valve mechanism 71 A to open each other. further, Return oil joint 21 On the C side, By opening the valve 32 A, The valve 3 2 A moves upward, Since the upper push rod 709 moves upward from the valve hole 701 of the pressure valve mechanism 7000 and pushes the ball valve 703 upward, Open the valve hole 70 1. for that reason, A communication passage is formed through the connection pipe 30a into the tank, the valve hole 701 in the joint body 21a and the pressure release hole 705, and Make the tank pressure equal to the tank pressure, Fuel leakage due to temperature rise in the tank can be prevented, Further, the inside of the tank is prevented from becoming negative pressure. Other configurations and operation and effects are the same as those in the first embodiment. The description is omitted. (Other Embodiments) It is not limited to the above embodiment of the present invention, Many modifications and changes can be made within the scope of the present invention. For example, In the above embodiment, Refueling joint, Although the configuration in which the return oil joints extend sideways from the top surface of the oil supply tank has been illustrated, Not limited to this, As in the second embodiment, a configuration projecting from the side surface may be adopted. Also, The oil supply port of the oil tank is not only on the top, It may be located on the side of the tank as long as it is located above the tank. As explained above, According to the present invention, Abolished the fuel tank that temporarily stores fuel, Directly feed fuel in the refueling tank to the oil pump I tried to oil, There is no need to attach the filler port of the fuel tank to the fuel tank, The filler cap is not wet by the fuel in the fuel tank, Especially because the fuel tank is not required, The number of components can be reduced. Moreover, An oil feed path that sends fuel from the oil tank to the combustion section, And Z or Connecting means is provided in the return oil path from the combustion section to the oil tank, Open the valve to these connection means with the main unit of the fuel tank installed, A valve mechanism is provided to close the valve when it is removed from the main body. No more fuel leaks when removing the tank from the body. In addition, An air valve was installed in the oil supply path to take in air that shuts off fuel supply. The supply of fuel can be reliably shut off. Also, A pressure valve mechanism for adjusting the tank internal pressure using the return oil joint of the second connection means was provided, Even if the pressure difference inside and outside due to the temperature difference inside and outside the tank, You can eliminate this and prevent fuel from overflowing from inside the tank, Also, No negative pressure in the tank Fluctuation of the fuel sucking and the amount of sucking can be prevented. Fourth Embodiment (Example 1) An embodiment of the present invention will be described with reference to the drawings. FIG. 44 is a schematic view of a petroleum fan heater 1 equipped with the liquid fuel combustion device according to the present invention, wherein a part of the front is cut away. FIG. 45 is a schematic view operatively showing a liquid fuel combustion device. Fig. 46 is a front view showing a part of the refueling tank 6 in cross section. FIG. 47 is a sectional view taken along the line BB of FIG. 46. FIG. 48 is an explanatory diagram showing a partial cross section of the suction port 44, etc. Fig. 49 is a sectional view of the oil supply cap 24 with a pressure valve of the oil tank 6. FIG. 50 is a sectional view of a refueling joint receiver. As shown in Fig. 44, the oil fan A front plate 2 that is detachably mounted, A top plate 3 formed integrally with the side, An operation unit 4 for operating the driving operation, The outlet 5 that blows out hot air, On the right side of the upper surface of the top plate 3, there is a lid 7 that can be opened and closed to insert and remove the refueling tank 6, By any chance It is mounted and fixed on a mounting table 8 that receives liquid fuel when it leaks. Inside the oil fan heater body 1, Fig. 44, As shown in Fig. 45, A removable fuel tank 6 to temporarily store fuel, Refueling join-in 9a, which is the connection means, A refueling joint in receiver 10a connectable to the refueling joint 9a valve; An air valve 20 (FIG. 45) for shutting off fuel in a fuel path between the fuel tank 6 and an electromagnetic pump 13 (FIG. 45) described later; A tank guide 11 for positioning and holding the refueling joint toin receiver 10a at a predetermined position; A vaporizer 1 2 for vaporizing the fuel from the fuel tank 6, An electromagnetic pump 1 3 that sends fuel from the fuel tank 6 to the carburetor 1 2, A parner 14 for mixing and burning the fuel vaporized by the vaporizer 12 and the primary combustion air; A combustion chamber 15 surrounding a burning parner 14; A partition plate 16 for separating the burner 14 and the combustion chamber 15 from other parts, A parner box 17 containing the burner 14, A heat pipe 18 (FIG. 45) for storing partially vaporized fuel from the vaporizer 12; A cooling fin 19 (FIG. 45) for cooling the partially vaporized fuel between the carburetor 12 and the heat pipe 18; A refueling joinout 9b (FIG. 45), which is a connection means for sending the return fuel from the vaporizer from the heat pipe 18 to the refueling tank 6; A refueling joint out receiver 1 Ob as a means for connecting the refueling tank 6 is provided. Figure 46 shows FIG. 3 is a front view showing a part of the refueling tank 6 in cross section. No. 4 7 Fig. 46 shows a cross-sectional view taken along the line BB in Fig. 46. The box-shaped refueling tank 6 for storing fuel A handle 2 3 for carrying it on its upper surface, A lubrication cap 24 with a pressure valve provided on the same surface as the handle 23; An oil amount meter 25 extending vertically so that the state in which fuel has been supplied can be visually recognized in the vicinity of the oil supply cap 24 with the pressure valve; A connection means 9 for the oil supply path when the main body of the oil tank 6 is mounted, A fuel supply port 26 is provided to supply fuel by loosening the fuel cap 24 with a pressure valve. Connection means 9 As shown in Fig. 46 and Fig. 47, one end extends to near the lower surface of refueling tank 6, A fuel suction pipe 3 l a with the other end formed in a substantially inverted U-shape, Refueling joint 9a connected to the substantially inverted U-shaped side of the fuel suction pipe 3 1a A refueling joint out 9b, which is a means for connecting a return fuel passage from the carburetor 12; A substantially inverted U-shaped return pipe 3 1b communicating the refueling joint out 9b with the refueling tank 6; Further, the refueling joint 9a, Refueling joint out 9 b, Fuel suction pipe 3 1a, And the return pipe 3 1 is maintained at a predetermined position with respect to the refueling nozzle 6. And a protective cover 28 for preventing impact from covering. The protective cover 2 8 It is positioned on the side of the refueling nozzle 6 via the mounting plate 27. The refueling joint 9a and the refueling joint 9b have the same configuration. As shown in Figure 47, A spindle-type valve mechanism is installed, A suction pipe 31a for sucking up the fuel in the fuel tank 6 and sending it to the electromagnetic pump 13 is connected to the refueling joint 9a side. The other side of the refueling joint 9b is a carburetor 12 (Fig. 44, A return pipe 3 lb for returning the return fuel from Fig. 45) to the refueling tank 6 is connected. As shown in Fig. 47, the valve mechanisms of the refueling joint toin 9a and the refueling joint out 9b are respectively Join body 3 3, Disc 3 4, Circumferential ring packing 35, Spring 36 and And a joint body packing 37. The shape of the joint body 3 3 is As shown in the figure, a metal pipe is expanded into a funnel shape, A stringing portion 33d is formed on the way to protrude in a flange shape so as to fit the joint body 33 inside the cover 28. That is, the shape of the joint body 33 is The body part 3 3a that maintains the cylindrical shape, Body 3 3a Tapered section (closing surface) 3 3b that gradually narrows the diameter from the end to the tip, At the tip of the taper part 33b, there is a cylindrical part 33c that maintains a predetermined diameter and a predetermined length at the tip end, The tip of the cylindrical portion 33c is tapered so as to further reduce the diameter. Also, At the other end of the joint body 3 3 An opening 33d is formed for maintaining the suction pipe 31a and the return pipe 31b in a concentric manner via the joint body packing 37. And The string portion 33d protruding in a flange shape is formed on the body portion 33a adjacent to the tapered portion 33b. still, The material of the joint body 33 may be made of resin instead of metal. Also, Body 3 3 a, The cross-sectional shape and the like of the tapered portion 33b and the cylindrical portion 33c are not limited to circular shapes. Also, The joint body packing 3 7 is molded from rubber, A joint seal between the seal of the joint body 33 and the pipe of the oil supply path is formed. The valve element 3 4 The joint body 33 has a shape almost similar to the funnel-like internal shape of 3, The interior of the joint body 3 is shaped to be reciprocable. That is, A substantially conical plug (closed surface) 3 4a, At the tip of the plug portion 34a, it is thinner than the cylindrical portion 33c, Long columnar movable part 3 4 b The spring 36 is connected to the other end of the plug 34 a, Also, A ring-shaped ring packing 35 is provided on the tapered portion of the plug portion 34a so as to be able to pivotally contact the port-shaped tapered portion 33b of the joint body 33. Since the O-ring packing 35 and the tapered part 33b of the joint body 33 are controlled via the movable part 34b, The length of the operating part 34 is such that the tip protrudes beyond the cylindrical part 33 c when the O-ring packing 35 of the plug part 34 a is in close contact with the inside of the tapered part 33 b. . The spring 36 is Connect one end to the opening 33 d of the The other end is connected to the plug 3 4 a, With the sealing packing 35 of the plug part 34 a closely attached to the inside of the tapered part 33 b, An urging force is working to maintain such a state. That is, the spring 36 is in an extended state. Therefore, If no external force acts, the O-ring packing 35 and the inside of the tapered portion 33b are pressed and adhered by the biasing force of the spring 36. The assembly of the refueling joint 9a and the refueling joint 9b First, Attach a circumferential O-ring packing 35 to the valve body 34 at a predetermined position. After fitting the spring 36 to the valve body 34, Insert from the opening 3 3d side of the joint body 3 3 Attach the joint body packing 37 to the joint body 33, and Assemble by fixing with adhesive. The mounting plate 27 provided on the refueling tank 6 A box-shaped mounting part 2 7 a for mounting a cover 2 The lower part consists of an insertion guide part 27 b that serves as a guide means when installing the refueling tank 6. Welded to refueling tank 6. The cover 2 8 for impact prevention As shown in Fig. 46, after the hippo 3 9, Before hippo 4 0, The cover consists of 4 1. After the cover 3 9 The longitudinal direction of the refueling join toin 9a and the refueling joint partner 9b is maintained in the vertical direction. It is concave so that it can be stored, A concave groove 3 9 a for receiving the cord 3 3 d of the joint body 3 3, Screw holes 39b at three places for fixing to the mounting plate 27 are provided. Before the hippo 4 0, After the cover, as in 39, refueling join toin 9a, A recess is provided to accommodate the refueling joinout 9b, A groove for receiving the joining portion 3 3 d of the joint body 3 3, Screw holes for fixing the mounting plate 27 of the refueling tank 6 A receiving portion 42 for fixing the upper cover 41 is formed. Before the hippo 4 0 and after the cover 3 9 The concave receiving parts are provided facing each other, With the refueling joint 9a and the refueling joint 9b Each screw hole becomes the same position, It is fixed to the mounting plate 27 by common screws. 4 1 on the cover Not shown to prevent misalignment of suction pipe 31a for sending fuel to refueling joint 9a and refueling joint 9b and return pipe 31b for returning fuel to refueling tank 6. There are several guide pins, Further, a fixing hook 4 3 for engaging with the receiving portion 4 2 of the front 40 of the cover, A screw hole 41 a for fixing to the mounting plate 27 is formed. The suction pipe 3 1 a for sucking up fuel from the fuel tank 6 is As shown in Fig. 46, the oil tank 6 reaches near the bottom face opposite to the handle 23 of the oil tank 6, A suction port 44 is provided at the tip (Fig. 46, (Fig. 4 8), Water and dust permeable filters 45 are inscribed. The sucking Entrance 4 4 It may be provided on the side surface other than the bottom surface of the tip of the suction pipe 31a. Also, The suction pipe 3 1 a In the state before the left and right adriyan addition of refueling tank 6, After infiltrating the fill pipe 45 into the suction port 44, the suction pipe 31a is passed through the notch hole 46a of the suction pipe fixing plate 46 formed in a crank shape. Assemble by performing the right and left adriyan processing of refueling tank 6. The suction pipe 3 1 a Since the movement of the fuel tank 6 during carrying is fixed by the suction pipe fixing plate 4 6, the suction port 4 4 of the suction pipe 31 a does not come into contact with the inner wall of the fuel tank 6. Damage can be prevented. Assembling the refueling joint toin 9a and the refueling joint out 9b of the connection means of the refueling tank 6 Insert the connection packing 4 7 into the suction pipe 3 1 a, Attach it to the specified position of the refueling tank 6. Further, the lubrication joint ton 9a and the lubrication joint 33d of the lubrication joint out 9b are fitted into the groove 39 of the rear 39 after the cover. Similarly, insert 40 before the cover so that the refueling joint toin 9 a and refueling joint out 9 b are sandwiched between the cover after the cover 39. Fix it to the mounting plate 27 with multiple screws. And For the two joint bodies 3 3 against the joint packing 3 7, Insert the corresponding suction pipe 3 1a and return pipe 3 1b into their centers. Also, Attach the fixing hook 4 3 on the cover 4 1 Insert it into the fixing receiving part 4 2 of the front 40, Fix to the mounting plate 27 with screws via the screw holes 41a. As explained above, The cover 28, which is a means to reduce the impact, was provided on the refueling joint 9a and the refueling joint 9b, which are the means for connecting the refueling tank 6, Even if impact force is applied from outside, Since 2 8 can reduce the impact, Refueling evening 6 and refueling joint toin 9a, There is no risk of damaging the refueling joint out 9b. Oil cap with pressure valve 24 Fig. 46, As shown in Figure 49, A cap 5 3 which is screwed into a lubrication port 2 6 having a threaded outer periphery protruding from an upper surface of the refueling tank 6, It has a pressure valve mechanism 54, The oil filler 26 is screwed through a rubber packing 55. The cap 53 includes: A pressure release hole 5 6 for releasing pressure is provided through the center, Sides are threaded, The terminal is curled. The rubber packing 55 Acts as a seal between filler 26 and cap 53, A pressure release hole 57 for releasing pressure is provided at the center. The pressure valve mechanism 54 includes: The fuel storage for the refueling tank 6, which has a valve element 58 and a spring 59, is generally stored in a cool place. After refueling Refueling evening 6 Because it is used in places with high indoor temperatures, When the ambient temperature of the oil tank 6 in the main body 1 is high, The air in the space other than the fuel inside the fuel tank 6 expands due to the temperature difference, As the air pressure rises, The fuel level in the fuel tank 6 rises, The pressure valve mechanism 54 is provided to prevent fuel from overflowing from the refueling tank 6. Also, Diameter 1 to prevent negative pressure in refueling tank 6. Holes 97 and 98 each having a diameter of 5 mm or less are formed to communicate with the rubber packing 55 and the top surface of the cap 53. These holes 97 and 98 may be provided on the upper surface of the fuel tank. As shown in FIG. 45, below the refueling join toin 9a, a refueling join tongue 10a serving as a receiving side connection means is provided. Under the valve mechanism of the outlet 9b, there is formed a lubrication joint receiver 10b serving as a receiving side connecting means. Functions as connection means. The configuration of the refueling joint toin receiver 10a and the refueling joint out receiver 10b will be described with reference to FIG. The lubricating joint-in receiver 10a and the lubricating joint-out receiver 10b have a protruding valve receiver 60 that engages with the valve element 34, a standing wall 61 around the valve, and a valve that forms a fuel passage inside. A bellows-shaped joint-in receiver 63 for sealing the receiving body 62, the lubricating joint receiver 10a, the lubricating joint-out receiver 10b and the valve receiving body 62, and a bellows-shaped joint A spring 64 for promoting expansion and contraction of the joint receiver 63, a spring receiver 65 for receiving the spring 64, and a holding plate 66 for holding the joint receiver 63 are provided. They are integrally formed in parallel at intervals. The receiving surface 67 of the valve receiver 60 is formed to be larger than the contact surface of the distal end portion 68 of the valve element 34 constituting the valve mechanism of the lubricating join ton 9a to ensure the engagement. A concave groove 69 is provided around the valve receiver 60, and a passage 71 a to the electromagnetic pump 13 and a passage 71 b to the heat pipe 18 communicate with each other. An air valve 20, which is a valve that takes in air to shut off the fuel flow, is connected to the fuel path 71a on the refueling joint-in receiver 10a side (Figs. 45, 50, 50). A hole Ί1c communicating with the fuel path 71a is provided. The communicating hole 71c is located above the liquid level of the filled fuel tank. As described above, lubrication joint 9a and lubrication joint out By integrating the valve receiver 60 on the 9b side, the structure including the mounting of the valve receiver main body 62 can be made compact. The joint receiver 63 is for sealing the lubricating joint receiver 10a and the valve receiver main body 62, and is made of elastic rubber and has a plurality of bellows formed on a side surface. The elasticity has been improved. A convex rib 63 b for mounting is provided on the lower part 63 a of the joint receiver 63 with the valve receiving body 62, and an inwardly folded edge is provided on the insertion side of the valve element 34. By forming the portion 63c, a through hole 70 closely contacting the valve element 34 is realized. A spring receiver 65 that supports one end of the spring 64 is provided between the lower part of the joint receiver 63 and the valve receiver main body 62. The spring receiver 65 has an edge formed around a portion receiving the spring 64, and a hole 65a for fuel passage is provided in the center. The presser plate 6 6 is used to press the joint receiver 6 3 against the valve receiver main body 62, and the lower part 63 a of the joint receiver 63 is sandwiched between the valve receiver main body 62 and screwed. ing. The air valve 20 (Fig. 45, Fig. 50, Fig. 51) is provided to take in air that sends air to shut off fuel in the oil supply path from the oil supply tank 6 to the electromagnetic pump 13 When the oil fan heater is operating, the air valve 20 is closed, and when the oil fan heater is stopped, it is kept open to refuel the oil supply path 7 1a from the oil supply nozzle 6 to the electromagnetic pump 13. Intake blocking air. The air valve 20 is opened when the carburetor 12 is cleaned by baking, sucks air into the oil supply path 71 a, drives the electromagnetic pump 13, and supplies air to the carburetor 12. send. Air valve 20 is shown in Fig. 5 1 As shown in (1), any structure can be used as long as it can form the air hole 71c communicating with the oil supply path 71a based on a control signal from a control device (not shown). For example, it can be constituted by a solenoid valve or the like. Further, in addition to the above-described electric control, an air valve 20 that opens and closes the air hole mechanically or manually may be used. To assemble the lubricating joint-in receiver 10a described above, the spring receiver 65 is inserted into a predetermined position of the valve receiving body 62, and the spring 64 is fitted inside the spring receiver 65. After fitting the bellows-shaped joint-in receiver 63 from above the spring 64 into the recess at a predetermined position of the valve receiver main body 62, the holding plate 66 is fixed to the valve receiver main body 62 with screws. The assembly of the refueling join-out receiver 10b is also configured by using the other of the valve receiver main body 62 in the same manner as the assembly of the refueling joint toin receiver 10a. Finally, an air valve 20 is attached and fixed to a hole 71 c portion provided in the middle of the passage 71. As shown in Fig. 52, the lubrication joint Toin receiver 10a and the lubrication joint out receiver 10b integrated with the valve support body 62 are used to fix the oil to the tank guide 11 as shown in Fig. 52. Secure to the joint receiving plate 72. The lubricating joint receiving plate 72 has a vertical wall 73 that is higher than the lubricating joint-in receiver 10a and the lubricating joint-out receiver 1Ob, and the tip of the tank 6 side wall is bent. The guide part 74 when the main body of the refueling tank 6 is inserted is formed. Also, on the fixed side of the tank guide 11 of the refueling joint receiving plate 72, a guide receiving plate 75 made of an elastic material and bent in the shape of an R-bend toward the refueling tank is fixed only on the upper side. To insert the refueling tank 6 to the opposite side of the combustion chamber 15 when the refueling tank 6 is inserted into the main body 1. It fulfills the guiding function. FIG. 53 is a cross-sectional view taken along the line A--A of FIG. 44. FIG. 54 is a top view from the direction of arrow C when the cover 28 in FIG. 53 is removed. is there. The vaporizer 12, the parner 14, the heat pump 18, and the cooling fin 19 are the same as those described above and will not be described. The operation of the oil fan heater with the above configuration will be described below.Open the lid 7 of the tank 1 with the empty oil tank 6, remove the oil tank 6 by holding the handle 2 3 of the oil tank 6, and pull the handle 2 3 upward. In this state, loosen and remove the refueling cap with pressure valve 24 and supply fuel from the refueling port 26 of the refueling tank 6. After refueling is complete, open the lid 7 of the main unit 1 with the fuel tank 6 filled with fuel in the main unit 1 and set it in place.As shown in Fig. 52, Fig. 55 and Fig. 56 In addition, an insertion guide portion 38 extending below the mounting plate 27 is guided between the insertion guide 74 extending above the lubricating joint receiving plate 72 and the valve receiving body 62, and At the same time, press the cover front 40 of the connection means of the refueling tank 6 with the guide receiving plate 75, and move the refueling tank 6 to the opposite side of the combustion chamber 15 to refuel the join-in receiver 10a and refuel. The valve body 34 is inserted into the through hole 70 of the joint receiver 63 of the joint out receiver 10b, the bellows of the joint receiver 63 shrink, and the valve body 34 of the valve receiver body 62 is received. 60, and when the refueling tank 6 is inserted into the main body 1 as shown in Fig. 56, the lubricating joint 9a and the lubricating joint The valve body 34 of the out 9b moves upward, the spring 36 becomes compressed, and the 0 ring 35 provided on the closing surface of the valve body 34 becomes the joint body 33 of the joint body 33. A gap S is created between the valve and the closing surface. The path through which the water flows to the electromagnetic pump 13 and the return path from the heat pump 18 to the refueling tank 6 are formed separately. When the operating switch (not shown) of the oil fan heater is operated to set the power to ◦N, the vaporizer 12 is heated by the vaporizer heater (not shown) attached to the vaporizer 12. You. At this time, the temperature of the carburetor 12 is detected by a carburetor thermistor (not shown). When the carburetor 12 is heated to a predetermined temperature, the electromagnetic pump 13 is driven to drive the oil supply tank. The liquid fuel in 6 is sucked up through the suction pipe 31a and sent to the carburetor 12 through the refueling joint 9a and the refueling joint-in receiver 10a. The liquid fuel is gasified by the heated vaporizer 12, blows out from the flame port 95 of the parner 14, is ignited in the flame 95, and burns in the combustion chamber. At this time, a controller (not shown) controls the drive of the electromagnetic pump 13 and sends it to the carburetor 12 based on the difference between the room temperature detected by the room temperature error and the set temperature set from the operation unit 4. By changing the amount of liquid fuel, the amount of heat generated by combustion is appropriately adjusted. When combustion starts and the flame sensor detects a flame current higher than the preset current value, the fan motor is energized and the blower fan rotates to suck air in the room. The rotation speed is controlled by the control device. The sucked indoor air takes the radiant heat obtained in the combustion chamber 15 and blows it out of the outlet 5 to the outside of the main unit 1 (indoor) from the outlet 5 together with the combustion gas, and the indoor temperature rises and controls the temperature. I do. When the operation of the main body 1 is stopped, the drive of the electromagnetic pump 13 is stopped, and the energization of the carburetor heater is stopped. At that time, the energization of the relay valve 84 is turned off, and the movable piece 91 of the solenoid valve 84 becomes a suction piece. The needle 83, which is opened from 2 and is attached to the suction piece 92, closes the hole of the nozzle 82 of the vaporizer 12. Partially vaporized fuel remaining in the carburetor 12 passes through the gap between the main body of the solenoid valve 84 and the closing surface of the needle 83, passes through the oil supply pipe, and passes through the oil supply pipe. Pump 18. The high-temperature partially vaporized fuel passing through the pipe 202 is radiated by the cooling fins 19 provided in the middle of the oil supply pipe, and the partially vaporized fuel is cooled to reduce the temperature. Sent to 8. The partially vaporized fuel in the heat pipe 18 is present as a gas when it is sent, and after a lapse of time, the temperature decreases and the gas changes to a liquid and is stored. At the time of ignition, the temperature of the fuel is raised in the carburetor 12 to convert it from a liquid to a gas, and the nozzle 82 is closed with the needle 83 for 1 to 2 minutes until the fuel is ejected from the nozzle 82. Since the hole of the nozzle 82 of the vaporizer 12 is closed, the internal pressure of the vaporizer 12 is about 0. 2 Go to [kg g cm 2] The pressure is applied inside the heat pipe 18 via the oil supply pipe, Pressure is applied to the surface of the fuel that has become liquid in the container 96 of the heat pipe 18 and the oil level is pushed down, so that the trumpet-shaped mouth 200 at the lower end of the pipe 99 provided inside the heat pipe 18 Liquid fuel is sent, Refueling joint out-out receiver via oil supply pipe 202b 1 Ob passage 7 1b Feeds to refueling tank 6 via refueling joint outlet 9b return pipe 3lb . When the liquid fuel is heated inside the vaporizer 1 2 to convert the fuel into gas, impurities are generated. During long-term operation, impurities accumulate inside the vaporizer 1 2 and the amount of gas ejected from the nozzle 8 2 of the vaporizer 1 2 decreases. so, In order to remove impurities accumulated inside the vaporizer 12 to return to the original gas amount, Clean the carburetors 1 and 2 with empty baking. The empty baking cleaning of the vaporizer 1 and 2 Perform the following procedure. First, With refueling tank 6 set in body 1, When you turn on the switch for air-fired cleaning, Automatically raise the temperature of the vaporizer 1 to 2 to the baking cleaning temperature, Open the air valve 20 and open it. When electromagnetic pump 13 is driven, Since the atmospheric pressure of the air entering from the air valve 20 is greater than the pressure in the refueling tank 6, Inlet air from the air valve 20 into the passage 7 l a, Further, the air is sent to the vaporizer 12 by the electromagnetic pump 13, The impurities in the vaporizer 12 are removed by raising the temperature inside the vaporizer 12 and baking for a certain time together with the air. In order to draw air into the electromagnetic pump 13 as before, There is no way to remove fuel from the oil supply route, Removing the fuel from the oil supply passage The carburetor 12 can be easily cleaned without any hassle. Also, When refueling refueling tank 6, Pull out oil tank 6 from main body 1 and Refuel from another container outside the main body, At that time, place the refueling tank 6 on a flat surface with the handle 23 facing up. Loosen and remove the lubrication cap with pressure valve 24 on the surface where the handle 23 is located. Refuel using the refueling pump from refueling port 26 of refueling tank 6. When refueling refueling tank 6 in this way, Since the refueling tank 6 is not turned upside down, As before, the fuel cap in the fuel tank 6 does not become dirty with fuel, Simple, Fuel can be supplied reliably. Also, The fuel to be replenished is often stored outside at low temperatures, and the temperature of the fuel is low. on the other hand, Since the ambient temperature of the refueling tank 6 in the main body is high, the air in the refueling tank 6 expands due to the temperature difference, and the pressure rises. This increased air pressure is oiled with a pressure valve. Push up valve body 5 8 of kip 2 4 Air escapes through the escape hole 5 6 of the cap 5 3 and the air pressure in the oil tank 6 returns to the original state. Fuel does not overflow from refueling tank 6. Also, The refueling join-in 9a and refueling joint-out receptacle 10a, which are connection means, Since it is located above the maximum liquid level of the refueling tank 6, The fuel tank 6 is prevented from overflowing. (Example 2) FIG. 57 is a perspective view of a fuel tank showing Example 2 of the embodiment, FIG. 58 is a top view of the fuel tank. In this embodiment, Even if the refueling tank 6B falls, the connection means such as the refueling joint toin 9a and the refueling joint out 9b will not be damaged. The refueling joint toin 9a and the refueling joint out 9b are arranged inside the outer and ridge lines 600 in the top view of the refueling tank 6B. In particular, As shown in FIGS. 57 and 58, In the oil tank 6 B formed in a substantially rectangular parallelepiped shape, Adjacent side 6 B 1, From the ridge line 6 B 3 formed by the intersection of 6 B 2 with each other, the side surface 6 B 1 6 Retract B 2 toward the tank center, A substantially triangular space area 6 B 4 is formed within the outer and ridge lines 6 B 0 of the top view of the refueling tank 6 B, In addition to installing the refueling join ton 9a and the refueling joint out 9b on the tank wall 6B5 in this space 6B4, These are arranged in the space area 6B4. The tank wall 6 B 5 in the space 6 B 4 It is formed from the upper end to the lower end of the refueling tank 6B, A refueling joint-in 9a and a refueling joint-out 9b formed separately from each other are fixed to the tank wall via mounting plates 27. In addition, Although not shown, Joy The fuel intake pipe 3la and the fuel return pipe 3lb are connected to the inlet 9a and the joint out 9b, respectively. Also, As in the first embodiment, a spindle mechanism is built in, It constitutes a part of the oil supply route and the return oil route. Also, The ridge line 6 B 3 adjacent to the ridge line 6 B 3 where the space area 6 B 4 of the refueling tank is formed includes: 2 side 6 B 2, adjacent to the tank top An inclined surface 6 B 9 is formed over 6 B 8, A refueling port 26 is formed on this inclined surface, A refueling cap 24 is rotatably opened and closed at the refueling port. This refueling cap 24 is also disposed in the outer and ridgeline 6B0 of the top view of the refueling tank 6, The cap 24 can be prevented from being damaged when the tank falls. Fig. 59 is a top view of the case where impact prevention means is provided, In addition to the configuration in Fig. 57 and Fig. 58, A protective cover 28 for shock reduction is arranged outside the lubricating joint toin 9a and the lubricating joint out 9b. A substantially U-shaped protection cover 28 viewed from the top is also arranged in a substantially triangular space area 6B4 within the outer contour / ridgeline 6B0 of the top view of the fuel tank 6B. In the above configuration, Both the refueling join toin 9a, refueling joint 9b, and protective cover 28 that are the connection means Since it is located in the substantially triangular space area 6 B 4 within the outer and ridge lines 6 B 0 in the top view of the refueling tank 6 B, Even if the tank accidentally falls when carrying the tank, Tank 6 side 6 B 1, 6 B 2, 6 B 8 hits the floor, Refueling join toin 9a and refueling joint out 9b can be prevented from directly hitting the floor, Damage to these joints can be prevented. In addition, Other configurations are the same as those of the first embodiment, The description is omitted. (Example 3) Fig. 60 is a top view of a fuel tank showing Example 3 of the present embodiment. In this embodiment, Instead of forming a substantially triangular space as in Example 2, Forming a substantially rectangular space area 6 C 4 In this space area 6C4, a refueling joint toin 9a and a refueling joint out 9b are arranged. That is, Refueling tank 6 C Its adjacent side 6 C 1, By retreating from the ridgeline 6 C 3 formed by the intersection of 6 C 2 toward the tank center, A substantially rectangular space area 6C4 is formed within the outer and ridgeline 6C0 of the top view of the refueling tank 6C, In this space, refueling join toin 9a and refueling joint out 9b are arranged, The mounting plate 27 secures to the tank wall 6 C 5. Other configurations and operations are the same as those of the second embodiment. FIG. 61 shows the embodiment of FIG. FIG. 8 is a top view showing an example in which a protective cover 28 for preventing impact that is curved along the outer contour / ridgeline 6 C0 is provided; The protective cover 28 is disposed within the outer / ridge line 6C0. In any of the examples, The same operation and effect as those of the second embodiment are obtained. The connection portion can be prevented from being damaged. (Example 4) FIG. 62 is a top view of a fuel tank showing Example 4 of the present embodiment, FIG. 63 is a top view in the case where a protective cover 28 for preventing impact is provided. In this embodiment, By retreating the side 6D1 of the refueling tank 6D toward the tank center, A recess 6D4 is formed inside the outer ridge 6D0 of the top view of the refueling tank 6D, The lubricating joint toin 9a and the lubricating joint out 9b are arranged in this recessed space 6D4. Attach the mounting plate 27 to the tank wall 6D5 corresponding to the bottom wall of the recess 6D4. Fixed Also, Fig. 63 shows a protective cover 28 with a U-shaped cross section that protects the lubricating joint 9a and the lubricating joint 9b in addition to this, and is arranged inside the outer and ridgeline 6D0. I have. Also in this embodiment, As in the second and third embodiments, This prevents damage to the connection. (Other Embodiments) It is not limited to the above embodiment, Of course, many modifications and changes can be made within the scope of the present invention. For example, In the above embodiment, A configuration in which a pressure valve is attached to the lubrication cap is shown. The pressure valve mechanism is Not only for refueling caps, A configuration provided at the refueling joint may be employed. Also, In Examples 2 to 4, It is also possible to adopt a configuration in which the air valve 20 shown in the first embodiment is also arranged in the outer contour / ridge line. As explained above, According to the present invention, Abolished the fuel tank that temporarily stores fuel below the refueling tank, The fuel in the refueling tank should be fed directly to the oil pump that feeds the combustion section, By reducing the components of the fuel path, The handleability of the oil tank is improved. Also, Since there is no need to temporarily store fuel below the refueling tank, The degree of freedom in designing the refueling tank increases, The fuel outlet of the fuel tank is not limited to the lower part, There is no need to add a fuel discharge function to the refueling cap. The outside of the refueling cap does not contact the fuel, The hands are not contaminated with fuel by opening and closing the refueling cap when refueling. Also, Even if the refueling cap is loose, there is no fear of fuel spilling. In addition, The connection means of the refueling tank and the anti-shock bar to protect it The outline of the top view of the refueling Since it was placed within the ridgeline, Oppose connection means No fire, The damage can be prevented. Fifth Embodiment FIG. 64 is a schematic front view of an oil fan heater equipped with a liquid fuel combustion device according to a fifth embodiment of the present invention. Figure 65 is a schematic diagram of a liquid fuel combustion device. As shown, Oil fan heater body 1 It is formed in a box shape, A front plate 2 detachably provided, A top plate 3 integrally formed with the side, An operation unit 4 for operating the driving operation; Outlet 5 that blows out hot air, On the right side of the top surface of the top plate 3, a lid 7 that can be opened and closed to open and close the oil tank 6E is provided. This body 1 is By any chance The liquid fuel is mounted and fixed on a mounting table 8 which receives the liquid fuel when it leaks. Inside of main unit 1 As shown in Figures 64 and 65, By the tank guide 11 and the partition 16 A tank storage chamber la that houses the refueling tank 6E, A function component storage chamber 1 b for storing the vaporizer 12, the electromagnetic pump 13, etc. It is divided into a combustion chamber 1 c in which a parner 14 and a combustion chamber 15 are arranged. In tank accommodation room 1a, A removable cartridge-type refueling tank 6 E for temporarily storing fuel, Oil supply side connecting means 9 A, which removably connects the oil supply path 300 for supplying the fuel in the oil supply tank 6 E to the carburetor side and the oil supply tank 6 E. 1 O A, A return oil side connecting means 2 1 2 2 A for detachably connecting the return oil path 301 for returning fuel from the carburetor 12 to the fuel tank 6 E and the fuel tank 6 E is arranged. At the bottom of the tank chamber 1a, When storing the refueling tank, Connection means 9 A, 10 A and 21 C, A shock-absorbing mounting table 1 d is provided to absorb and mitigate the impact on 22 A. Ma Was In the tank chamber l a, When storing refueling tank 6 E, Oil supply side connection means 9 A, 10 A and return oil side connection means 2 1 C, 2. Make sure that 2 A It is preferable to form a guide part. The oil supply side connection means Oil transfer joint 9 A with a built-in valve that opens and closes the suction pipe and passage, An oil transfer joint receiver 10A is provided for receiving a valve of the oil transfer joint 9A. Oil joint receiver 1 O A An air valve 20 is connected to the oil supply path to shut off the oil supply path 300 supplied from the oil supply tank 6 E to the electromagnetic pump (oil supply pump) 13. This oil transfer joint receiver 1 O A It is mounted on the wall of the tank guide 11 whose upper part protrudes toward the functional component storage room. Functional component accommodation room 1 b Which is disposed between the tank storage chamber 1a and the combustion section chamber 1c, A vaporizer 1 2 that vaporizes the fuel from the fuel tank 6 E, An electromagnetic pump 1 3 that sends fuel from the refueling tank 6 E to the carburetor 1 2, A storage vessel 18 for storing partially vaporized fuel from the vaporizer 1 2, A cooling fin 19 for cooling partially vaporized fuel is accommodated between the vaporizer 12 and the storage vessel 18. The combustion section chamber 1 c Divided by a partition plate 16 A parner 14 for mixing and burning the fuel vaporized by the vaporizer 12 and the primary combustion air, A combustion chamber 15 surrounding a burning parna 14 A parna box 17 containing a parna 14 is housed therein. An oil supply path 300 in which a combustion unit for burning fuel is constituted by the carburetor 12 and the parner 14 etc. Piping between oil transfer joint receiver 1 O A and electromagnetic pump 13 And the connection between electromagnetic pump 13 and vaporizer 1 2 Tube 204. Also, Return oil path 3 0 1 Piping 205 extending between vaporizer 12 and cooling fan 19 Piping 206 through cooling fin 19 and reservoir 18 And a pipe 2 07 connecting the storage vessel 18 and the return oil joint receiver 1 O A. These pipes 203 to 207 are all formed of copper pipes. In addition, The piping from the lubrication tank 6 E to the electromagnetic pump 13 is Pipes made of resin or the like other than copper pipes may be used. (Composition of refueling tank) Fig. 66 is a schematic diagram of the refueling tank, Fig. 67 is a perspective view showing the connection part of the fuel tank, Fig. 68 is a cross-sectional view showing the connection between the oil transfer joint and the suction pipe in the oil tank. Fig. 69 shows the structure of the return oil joint. As shown, Refueling tank 6 E Conductive metal materials (for example, Formed into a vertical box shape by zinc plating Handles 2 3 installed on the top of the tank to carry fuel and carry, An inclined surface 501 formed between the upper surface on which the handle 23 is provided and one side surface adjacent thereto; A fuel supply port 26 disposed on this slope 501 for fuel supply, Closing means 600 for closing the oil supply port 26 so as to be able to open and close freely; It is provided on the side near this filler port 26, An oil meter 25 that makes it possible to visually confirm the state of fuel supply, On the upper surface where the handle 23 is provided, An oil supply joint 9A and a return oil joint 21C are provided on the opposite side of the oil supply port 26. Oil transfer joint 9 A As shown in Fig. 68, A horizontal L-shaped connecting pipe 43A projecting from the top of the refueling tank 6E to the side of the tank, It has a built-in spindle type valve mechanism 28 A provided at the end of the connection pipe 43 A. And a joint body 9Aa. The joint body 9 A a Formed into a vertical cylindrical shape, On its lower surface is formed a cylindrical small-diameter projecting cylinder 9 Ab that fits on the oil transfer joint receiver 1 OA side, A ring 41 A for a connection seal is fitted on the outer peripheral portion. Also, An openable / closable cover nut 38A for inserting the valve mechanism 28A is screwed into the upper end opening of the joint body 9Aa. The valve mechanism 2 8A in the joint body 9A a The central body 9Ac of the joint body 9A a small-diameter projecting cylinder 9Ab and A spindle-shaped valve element 31A, which can be freely attached to and detached from an inverted conical valve seat 9Ad formed at a lower portion in the joint body; A spring 35A interposed between the upper end of the valve body 31A and the lid nut 38A to urge the valve body 31A in the valve closing direction; And a sealing ring 3 3A fitted to the valve seat side peripheral surface of the valve body 31A. In the closed state, the lower end of the valve body 31A projects downward from the small-diameter projecting cylinder 9Ab. Connection tube 4 3 A A suction passage 43a communicating with the valve chamber in the joint body 9Aa is formed therein, The end projecting to the side of the tank is integrally connected to the side of the joint body 9Aa. The lower end of the connecting pipe 43A is inserted into the tank through the insertion hole 46A on the top of the oil tank 6E. A flange 43b formed at a lower portion is fixed to a hole 47A on the upper surface of the refueling nozzle 6E via a rubber packing 50A with a screw. A male screw is engraved on the outer peripheral surface of the lower end of the connecting pipe 43A, The upper end of the suction pipe 27A in the oil supply tank is screwed to this male screw. The suction pipe 27A is Reaching near the bottom of refueling tank 6E, A filter that does not allow water or dust to pass through the suction port 4 4 B formed on the lower end side 45 B is provided. The suction port 44B may be provided on the bottom surface of the lower end of the suction pipe 27A (see FIG. 82). Return oil joint 21 C As shown in Fig. 69, Along with the oil transfer joint 9A, it is arranged side by side on the upper surface of the oil tank 6E, No suction pipe 27 A connected, And the oil supply tank 6 E has a pressure valve mechanism 700 The structure is basically the same as the oil transfer joint 9A. Therefore, Structures other than the above differences will be briefly described. Return oil joint 21 C As shown in Fig. 69, A horizontal L-shaped connecting pipe 30 A projecting from the upper surface of the fuel tank 6 E to the side of the evening tank, A joint body 21a having a spindle mechanism valve mechanism 29A is provided at the end of the connection pipe 3OA. The joint body 2 l a Formed into a vertical cylindrical shape, On its lower surface, a cylindrical small-diameter projecting cylinder 2 1b that fits on the return oil joint receiver 22 A side is formed, An O-ring 42 A for connection seal is fitted around the outer peripheral portion. Also, An openable / closable lid nut 4OA for inserting the valve mechanism 29A and the pressure valve mechanism 700 is screwed into the upper end opening of the joint body 2la. The valve mechanism 29A in the joint body 21a is The center valve hole 2 1 c of the joint main body 2 1 a of the small-diameter projecting cylinder 2 1 b, A spindle-shaped valve element 32A, which can be freely attached to and detached from an inverted conical valve seat 21d formed at a lower portion in the joint body; A spring 36 A for urging the valve body 32 A in the valve closing direction; A sealing ring 34 A fitted to the valve seat 32 A on the valve seat side peripheral surface is provided. The valve body 32A has a lower end that is closed and protrudes downward from the small-diameter projecting cylinder 21b. Also, Pressure valve mechanism at upper end 70 A push rod 709 capable of pressing the 0 ball valve element 703 is formed. Spring 36 A is It is interposed between the upper surface of the valve body 32A and the lower surface of a valve seat 70a of the pressure valve mechanism 700 described later. Connecting tube 30 A A return passage 30a communicating with the valve chamber in the joint body 21a is formed therein, The end protruding to the side of the tank is integrally connected to the side of the joint body 21a. The lower end of the connecting pipe 3 O A is inserted into the tank through the insertion hole 48 A on the top of the oil tank 6 E. A flange 30b formed at a lower portion is fixed to a hole 49A on the upper surface of the fuel tank 6E by a screw via a rubber packing 51A. In the present embodiment, The temperature difference between the inside and outside of the refueling tank 6E causes the air pressure in the tank to rise, causing the liquid level in the tank to rise and causing fuel leakage. To prevent negative pressure inside the tank, A pressure valve mechanism 700 is provided at the return oil joint 21C. This pressure valve mechanism 700 A valve seat body 70 2 a with a cylindrical valve hole 70 1 disposed above the valve body 32 A; A ball valve 703 that can be freely attached to and detached from the closing surface in the valve chamber above the valve hole 7001 of the valve seat body 702a; A spring 704 for urging the ball valve 703 toward the seating side; And a cover nut 40A for positioning the valve seat body 702a in the joint body 21a. For the lid nut 4 O A, A pressure relief hole 705 is formed in the center of the Spring 704 It is interposed between the ball valve 70 3 and the lid nut 40 A. The valve hole 7 0 1 The push rod 7 09 of the valve body 32 A is set to a diameter that allows it to penetrate, Return oil joint 2 1 C is mated and connected with return oil joint receiver 2 2 A, When the valve body 32 A is pushed upward, Push rod 7 0 9 penetrates valve hole 7 0 1 and pushes ball valve 7 0 3 upward By pushing up, the valve hole 7 0 1 is opened, The inside of the tank and the pressure release hole 705 of the lid nut 4OA are connected to each other via the connection pipe 3OA. The oil transfer joint 9A and the return oil joint 21C are: In each case, the valve body 31 A of the joint body, 3 2 A is set downward, And are placed at the same level, An oil feed joint receiver 10A and a return oil joint receiver 22A, which are arranged facing upward and facing upward, are fitted and connected in the vertical direction. Therefore, Simply install refueling tank 6E from above the evening chamber 1a, Both connection means 9 A, 10 A and 21 C, 22 A can be connected smoothly. Fig. 70 shows the oil supply side connection means 9A, 1 OA configuration diagram, Fig. 71 is a structural diagram of the lubrication joint receiving part, FIG. 72 is a structural diagram of the return oil side connection means. As shown, In tank accommodation room 1a, Refueling tank 6 E An oil feed joint receiver 1 OA and a return oil joint receiver 22 A are arranged below the oil feed joint 9 A and the return joint 21 C. Oil joint receiver 1 OA As shown in Fig. 71, Cylindrical receiving body l O A a concave receiving part 61 A with a circular cross section that opens on the upper surface of a A valve mechanism 6 OA is provided in the receiving portion 61 A, and is opened and closed by contact and separation with a valve mechanism 33 A of the oil joint 9 A and a valve body 33 A of the oil transfer joint 9 A. At the upper end of the concave receiving portion 61A, there is formed an annular sealing surface 67A that can be in close contact with the periphery of the small diameter projecting cylinder 9Ab of the oil transfer joint 9A. Also, On the bottom surface of the receiving part 61A, a valve receiving part 68A is recessed, A valve receiver 65 A is fitted into the valve receiver housing 68 A. The valve 65A is Valve body formed at the lower part of the receiving body 1 O A a 60 a A valve hole 60 b communicating with A grid-like passage 66 A through which fuel flows is formed around the periphery. Valve mechanism 6 O A A valve body 62A, which can be freely attached to and detached from the valve seat of the valve chamber 60a and whose upper end projects through the valve hole 60 to the receiving portion 61A side; Interposed between the head of this valve body 62A and the valve receiver 65A, A spring 63A that urges the valve body 62A in the valve closing direction; An O-ring 64 A is fitted on the valve chamber 60 a side of the valve body 62 A so as to be in close contact with the outside and seals between the valve seat and the valve seat. This valve mechanism 6 O A The valve 3 3 A of the lubricating joint 9 A opens when the head of the valve 6 2 A on the receiving side comes into contact with the valve, and the valve opens. The valve closes when it is separated from the head of the valve body 62A. Also, In the lower part of the valve body 60 a of the receiving body l O A a, A passage 69 A communicating with the pipe 203 connected to the electromagnetic pump 13 is formed, Also, On the side of the valve chamber 60a, The passage 70 A of the air valve 20 is connected. This passage 7 O A The fuel tank is located above the liquid level when the fuel tank is full. The air valve 20 is This is provided to take in air that shuts off fuel in the oil supply path 300 from the oil supply tank 6E to the electromagnetic pump 13 into the oil supply path 300, Valve 20 a located in the air intake passage of the valve body, An electromagnetic coil 20 b that is arranged on the outer periphery of the valve body and moves the valve element 20 a in the valve closing direction of the passage 7 O A by excitation thereof; A spring 20c for biasing the valve 20a in the valve opening direction is provided. The operation of this air valve 20 is During operation, the air valve 20 is closed, Also, During stop, it is open and plays the role of taking in the air that shuts off the fuel in oil supply path 300. Also, The air valve 20 is At the time of empty bake cleaning of the vaporizer 1 and 2, the air is sucked as open. See The electromagnetic pump 13 is also driven to send air to the vaporizer 12 by driving. on the other hand, Return oil joint receiver 2 2 A The structure is basically the same as that of the oil transfer joint receiver 10 A except that the air valve 20 does not exist. Therefore, To briefly explain the structure, Return oil joint receiver 22A As shown in Fig. 72, A concave receiving portion 72A formed on the upper surface of the receiving body 22a; A valve mechanism 71A that is disposed in the receiving portion 72A and that opens and closes by contact and separation with the valve body 32A of the return oil joint 21C and the valve body 29A of the return oil joint 21C is provided. An annular sealing surface 78 A is formed at the upper end of the receiving portion 72 A, Also, A valve receiver 76A is fitted into a valve receiver housing part 79A recessed on the bottom surface of the receiver 72A. The valve bearing 7 6 A A valve hole 7 1b communicating with the lower valve chamber 7 1a of the receiving body 2 2a is formed, There is a grid-like passage 77 A around which fuel flows. The valve mechanism 71A is A valve body 73A, which is freely detachable from and seated on the valve seat of the valve chamber 71a and whose upper end projects through the valve hole 71b to the receiving section 72A side, Interposed between the head of this valve body 7 3 A and the valve receiver 72 A, A spring 74 A for urging the valve body 73 A in the valve closing direction; A sealing ring 75 A, which is closely fitted to the valve chamber 71 a side of the valve body 73 A, Return Oil joint 2 1 C valve body 3 2 A opens by contacting the head of receiving valve body 73 A with pressure. The valve closes when separated from the head of valve body 73A. At the bottom of the valve chamber 7 1a of the receiving body 2 2a, A passage 8 O A communicating with the pipe 200 connected to the storage container 18 is formed. Oil tank 6 E and connection means 9 A, 10 A and 21 C, In the 22 A configuration, Refueling tank in tank storage chamber 1a of main unit 1 6 When E is set from above, The oil transfer joint 9 A and return oil joint 21 C of the connection means Oil transfer joint receiver 10 A and return oil joint receiver 22 Each joint body 9 A a, 2 1 a Small diameter protrusion 9 A b, Ring 4 1 A, outside of 2 1 b 42 A is sealed by the oil supply joint receiver 10 A seal surface 67 and return oil joint receiver 22 A seal surface 78 A, and it is sealed. at the same time, Valve mechanism of each joint 28 A, 29 A and its receiving valve mechanism 60 A, By pressing the 7 1 A valves together, The valve is opened. further, Return oil joint 2 1 On the C side, By opening the valve 32 A, The valve 3 2 A moves upward, Since the upper push rod 709 moves upward from the valve hole 701 of the pressure valve mechanism 702 and pushes the ball valve 703 upward, Open the valve hole 70 1. for that reason, A communication passage is formed from the inside of the tank, through the connection pipe 3OA, through the valve hole 701 and the pressure release hole 705 in the joint body 21a, Make the tank pressure equal to the tank pressure, Fuel leakage due to temperature rise in the tank, A negative pressure in the tank can be prevented. (Composition of refueling port) Fig. 73 is a side view of the refueling tank, Fig. 74 is a cross-sectional view of the oil filler port with the oil tank main body attached. Fig. 75 is a cross-sectional view of the fuel filler port when the fuel tank is taken out of the main body. As shown, Refueling tank 6 E An inclined surface 501 having a predetermined angle is formed between the upper surface 6d and a side surface 6E adjacent to the upper surface 6d and downward from the upper surface of the tank. The oil supply port 26 is arranged on the inclined surface 501. The inclination angle of the inclined surface 501 is Minimal volume cut in the refueling tank, Refueling port 2 6 Is set to an angle that cannot be opened and closed. The refueling port 26 is closed by a rotatable lid member. That is, The closing means 600 of the filler port 26 is As shown in Figure 74, A fixed plate 601, which has a hole that fits into the filler port 26, is spot welded to the inclined surface 501, and is integrated, On the upper handle side of the fixed plate 601, a movable plate 603 supported rotatably by a standing piece 602, A lid member 6 05 with a packing 6 0 4 which is disposed on the inner surface side of the movable plate 6 0 3 and closes a refueling port 2 8 A base 2 6 a; A coiled spring member 600 interposed between the lid member 605 and the inner surface of the movable plate 603 and pressing the lid member 605 toward the base 26 a of the oil filler 26, Locking means for holding the movable plate in a closed position. The fixed plate 6 0 1 It extends from the slope 501 to the top of the tank, A bearing portion (not shown) that supports the lower leg portion of the handle 21C so as to be able to move up and down is formed in the extended portion. The movable plate 6 03 The handle side is used as a pivot 6 1 1, Locking means 6 07 is arranged on the open end side, With the main body attached, Even if you try to open the movable plate 6 03, So that its open end abuts the tank guide 11 and cannot be opened. The movable plate length is set. The lid member 6 05 Formed in a deep dish shape, The outer end flange 6 08 cannot come out of the annular stopper member 6 10 formed on the inner surface of the movable plate 6 It is movably locked in a direction perpendicular to the plate surface of the movable plate. Packing 6 0 4 An annular member fitted to an outer peripheral portion of the central projecting portion of the lid member, The upper end of the base 26a is pressed. Panel members 600 are It is arranged in the internal space between the movable plate 603 and the lid member 605. The locking means 6 7 The open end side of the movable plate 6 03 opposite to the pivot 6 1 1 That is, It is arranged on the tank guide 11 side of the tank storage chamber on the lower end side of the inclined surface 501, and A locking lever 6 15 with a pin-shaped locking portion 6 14 supported rotatably around the shaft 6 13 on the open end side of the movable plate; A hook-shaped locking receiving portion 6 16 provided on the fixed plate 61 so as to engage with the locking portion 61 4 and hold the movable plate 63 in the closed position; A lever panel 617 is provided for urging the lever 615 in the direction in which the locking portion 614 engages with the locking receiving portion 161. The lever springs 6 1 7 It is wound around the rotation axis 6 18 of the locking lever 6 15, One end is locked by the cut-and-raised piece 6 1 9 of the locking lever, The other end is a coil-shaped spring member locked to the stopper member 6110 of the movable plate 603, and It is located on the inner side of the locking lever 6 1 5, The locking lever 6 15 is configured to be biased outward from the movable plate 63. The locking receiver 6 1 6 It has a space between the base and the side wall of the base 26 a to allow the intervention of the locking portion 6 1 4, And open to the base 26a side. In this embodiment, the locking portions 614 are removably locked. The locking levers 6 1 5 A part of the outer end is extended to form a triangle, The rear surface faces the tank guide 11 in the locking position of the locking lever 6 15, There is a small gap between the two to make it impossible to insert a finger to release the locking lever. And In the locked state of the locking levers 1-6, Although it does not protrude outward from the tank side, With the tank body attached, Even if you try to release and rotate the locking lever 6 1 5 Extension section 6 20 and tank chamber wall Surface 1 1 abuts, The lock levers 6 15 prevent rotation release of the levers. In the above configuration, When the locking lever 6 15 is pressed toward the base with the locking lever 6 15 locked, The locking portion 6 13 is disengaged from the locking receiving portion 6 16 to release the locking of the closing means 600, When the tank 6E is mounted on the body, Install the filler port on the inclined surface 501, In addition, since the extension 6 20 is provided in the locking lever 6 15, Even if you try to release the locking levers 6 1 5 The locking lever 6 1 5 is hidden by the movable plate 6 0 3, With the back of the locking lever 6 15 facing the wall of the tank storage chamber, Because you can not reach into the gap, Locking lever 6 1 5 cannot be released. for that reason, Oiling tank 6 E I ca n’t refuel, Fuel spillage during refueling into the main body 1 can be prevented. In addition, In the above embodiment, Although the example where the locking lever was arranged on the movable plate side was shown, A configuration in which the locking lever is disposed on the fixed plate side may be employed. (Structure of tank bottom) Fig. 76 is a sectional view showing the structure of the tank bottom. Fig. 77 is a sectional view of the tank interior, FIG. 79 is a perspective view of a water receiving pan mounting hole on the bottom of the tank. As shown, In the fuel tank 6E of the present embodiment, At the bottom of the tank, Fuel amount detection means 7500 (Fig. 77) for detecting the amount of fuel in the refueling tank; A water detection means W for detecting dew condensation water generated in the refueling tank; Tank mounting detecting means 900 for detecting the presence or absence of the main body of the refueling tank is provided. Evening stand Id It has legs 7 55 on its outer periphery to be placed on the mounting table 8, The central part protrudes downward, On the upper surface side, a receiving recess 7 5 4 of the water receiving tray W 1 that is recessed downward is formed, The outer periphery is the bottom of the tank 6 b, the mounting table 7 5 7 The central convex portion 756 is fitted and mounted in the hole 8a of the mounting table 8. Water detection means W A conductive water pan W 1 provided on the bottom of the conductive tank for storing dew condensation water, An electrode W 2 contacting the water pan W 1, An electrode W 3 that contacts the bottom of the refueling tank 6 E; A watertight packing W4 as an insulator for electrically insulating the water tray W1 and the oil tank 6E, The water tray W 1, which detects water based on the difference in electric resistance between the water stored in the water tray W 1 and the fuel, It is molded separately from tank 6E using stainless steel plate to prevent the occurrence of shrinkage, The top side is dish-shaped, A peripheral flange W7 extending outward in the radial direction is formed on the outer periphery thereof, The flange W7 is attached to the bottom mounting hole W5 of the oil tank 6E via a rubber packing W4. Packing W 4 With the peripheral wall of the mounting hole W5 on the bottom of the lubrication tank 6E, A non-conductive material having a strong force interposed between the peripheral flange W 7 of the water tray W 1 and The flange W 7 of the water tray W 1 is sandwiched from above and below. Packing W 4 It is fixed around the tank mounting hole W5 by a ring-shaped holding member W9 and screw W10 arranged on its lower surface, This allows The water tray W1 is fixed to the mounting hole W5 in a watertight state. This rubber packing W 4 Has non-conductive oil resistance, And a water-repellent rubber member, Specifically, NBR (ditryl butadiene rubber) having excellent oil resistance and fluorine rubber having excellent water repellency are used. In particular, If the packing has poor water repellency , Water accumulates Even after draining, water remains in the packing and the metal part of the oil tank 6E. It may cause malfunction, In the present embodiment, Because we used rubber material having water repellency, Accurate, Accurate water detection becomes possible. The electrode W 2 on the water pan W 1 and the electrode W 3 on the tank are Both are mounted on the tank mounting table 1 d outside the refueling tank. The electrode W 2 on the water pan W 1 It protrudes from the bottom wall of the water tray receiving recess 7 5 4 toward the tank, It is a needle electrode that comes into contact with the outer surface of the water tray W 1 when the tank is mounted. The tank side electrode W 3 is A needle-shaped electrode that is exposed on the outer mounting surface 757 of the mounting table Id and contacts the bottom surface 6b of the tank when the tank is mounted. By connecting both electrodes to the power supply, From the power supply to the water pan side electrode W 2, Water tray W l, Fuel or water inside it, Tank bottom 6 b, Tank side electrode W 3, And an electrical closed circuit to the power supply Due to the difference in resistance of the liquid (fuel or water) inside the water pan W 1 It can detect the presence of water. In order to increase this water detection accuracy, The mounting hole W5 on the tank side for mounting the water pan W1 is bent downward, At intervals at a plurality of locations in the circumferential direction of the bent portion W 1 1, A needle W12 with a narrow width and a sharp tip is formed to protrude downward, This needle portion W 1 2 functions as the tip electrode on the ink side, The tank side electrode W 3 and the tank bottom are connected to each other as a conductive path. In addition, The suction port 4 4 B that sucks up fuel from inside the tank is It is provided above the needle section W 1 and 2, The water in the internal water receiver of the water tray W1 is not sucked directly. Also , Inside the bottom of the water pan W 1 By covering the part except the outer part with non-conductive paint, etc. If water remains on the metal parts of the packing W 4 and the oil tank 6 E, it will not cause a malfunction. Absent. Also, On the inside of refueling tank 6E, Suction port for sucking up fuel from inside the tank 4 4 B By coating with non-conductive paint, etc., The harmful effects of water in a method other than the water detection method using electricity can be prevented. Around the conductive water pan W 1 provided on the bottom of the refueling tank 6 E, A tank die 9 1 for guarding the water tray W 1 is welded. The shape of this tank die 901 is Higher than the surface to be welded to refueling tank 6E Further, a rib having a height higher than the height of the water receiving tray W1 or a U-shaped 902 shape is provided on the periphery. For this reason, Take out the refueling tank 6 E from the main body, When refueling with the filler port up, Even if there is foreign matter on the bottom of E 6 and the surface that contacts the water pan W 1 It is possible to protect the bottom of the sunset and the water tray W 1 from scratches and dents. Malfunction of water detection can be prevented. Also, The fuel amount detection means 750 A float 752 with a built-in magnet 751 that is located inside the tank and functions as a detected part; A lead switch 753 is provided on the tank mounting table 1d so as to face the float 752 so that the magnet 751 approaches and separates as the magnet 751 approaches and separates. Float 7 52 is With the magnet placed on the lower side, A permeable cylindrical guide with a canopy is mounted inside the permeable tubular guide 754 so that it can move up and down as the fuel level fluctuates. The lower end surface of the guide 754 is integrally fixed to the inner surface side of the water tray W 1 of the water detecting means W. Lead Switch 7 5 3 So as to face float 7 52 It is fixed to the lower surface of the central convex part of the tank mounting table Id. Guide 7 5 4 Refueling tank 6 To protect the commercially available refueling hose from coming into contact with the float 7 When this guide 754 is made of metal, the inside is processed to prevent burrs. Therefore, When the fuel inside the refueling tank 6 E decreases to a certain level, The lead switch 753 senses by the magnet of the float 752, The operation is sent to the control section 950, The display section 952 can inform the user of running out of fuel and the like. Tank mounting detection means 900 The switch body 9 0 1 a is installed on the lower surface of the tank mounting table 1 d, The movable contact 9 0 1 b is constituted by a micro switch 9 0 1 which is set to be able to protrude and retract from a hole 7 5 8 formed on the outer peripheral mounting surface 7 5 7, When the tank 6E is mounted on the mounting surface 757, the movable contact 9101b is pushed by the tank and retreats. ON. Fig. 79 shows these fuel amount detection means Water detection means W, And evening, FIG. 3 is a configuration diagram of a control circuit that controls various operation modes in accordance with a signal from a work mounting detection means 900. As shown, The control unit 950 is CPU , It consists of a microcomputer with a built-in ROM and RAM, On the input side, fuel amount detection means 7500, Water detection means W, And the sunset setting detection means 900 are connected, The electromagnetic pump drive circuit 951 on the output side Display 9 5 2, And the valve drive circuit 9 5 3 are connected, Operation control is performed by various input signals. For example, When the fuel tank is pulled out during operation, When tank mounting detection means 900 is OFF (no tank), By inputting that signal to output a stop signal for the electromagnetic pump to the pump drive circuit 951, and outputting an open signal for the air valve 20 to the valve drive circuit 953 to stop the operation, Similarly, the tank mounting detection means 9 0 0 At the time of 制御, control to drive the dry-burning cleaning operation mode in which the vaporizers 1 and 2 are dry-burned can also be performed. Sky grilling cleaning is By opening the air valve 20 during shutdown, Sending air instead of fuel to carburetor 1 2 This refers to baking the impurities deposited on the vaporizer. This sky-baked cleaning is When the air-burning cleaning switch (not shown) is turned ON, The temperature of the vaporizer 1 and 2 is automatically increased to the baking cleaning temperature, Open the air valve 20 and open it. This is performed by driving the electromagnetic pump 13 to send air to the carburetor. With this control, Since the atmospheric pressure of the air entering from the air valve 20 is greater than the pressure in the refueling tank 6E, Inhale air from the air valve 20 This is sent to the vaporizer 12 side, The impurities in the vaporizer 12 are removed by raising the temperature of the vaporizer 12 and baking the air with air for a certain period of time. In such empty cleaning, There is no way to remove fuel from the oil supply route, Eliminates the hassle of removing fuel from the oil supply path. Also, In the control section 950, When the tank mounting detection means 900 is in the ON state, When the fuel amount detection means for detecting the fuel amount is in the OFF state (with fuel), It is also possible to control to start the operation by driving the electromagnetic pump 13 based on an operation command from an operation switch (not shown). further, During the combustion operation, the tank mounting means 900 is in the ON state (tank mounted state). When the fuel amount detection means for detecting the fuel amount is in the ON state (no fuel), the operation can be controlled to be stopped. Also, Fuel quantity detection means When the 5N state of 75 0 (out of fuel) is detected, The display unit 952 can also notify the refueling. Vaporizer, Pana, Electromagnetic pump, Storage container, The configuration of the cooling fin The description is omitted because it is the same as above. (Operation of Oil Fan Hee) The operation of the oil fan hee will be described. Open the lid 7 of the main unit 1 with the empty refueling tank 6 E, After holding the handle 2 3 of the refueling tank 6 E and taking it out, The closing means 600 is opened with the handle 23 turned upward, and fuel is supplied from the filler port 26. Once refueling is complete, Open the lid 7 of the main unit 1 with the fuel tank 6 E filled with fuel, Set in place. Then, As shown in Fig. 71 and Fig. 73, Valve mechanism 28 A for oil supply joint 9 A of lubrication tank 6 E and valve mechanism 29 A for return oil joint 21 C 3 2 A Oil transfer joint receiver 1 O A valve mechanism 6 O A and return oil joint receiver 22 A valve mechanism 71 A Respective valve bodies 62 A, 7 Hold 3 A, Valve body 6 2 A, 7 Lower 3 A. These valves 6 2 A, 7 3 8 head 6 2 3, 7 3a is valve receiver 6 1A, 7 2 A The valve mechanism of the oil transfer joint 9 A 28 A and the valve mechanism of the return oil joint 21 C 3 2 A moves upward, Spring 35 A biased in the valve closing direction, 3 6 A becomes compressed, Valve body 3 1 A, 3 2 A closing surface 0 ring 3 3 A, 3 4 A has gaps between the oil supply joint 9 A and the return oil joint 21 C with the respective closing surfaces. An oil supply path 300 through which fuel flows from the gap to the electromagnetic pump 13 side, The return oil path 301 from the storage vessel 18 to the oil tank 6E is opened. By operating the oil fan heater operation switch (not shown) and setting the power supply to 〇N, By the vaporizer heater (not shown) attached to the vaporizer 1 and 2, The vaporizer 12 is heated. At this time, The temperature of the vaporizer 12 is detected by a vaporizer (not shown). And When the vaporizer 12 is heated to a predetermined temperature, The electromagnetic pump 13 is driven to suck up the liquid fuel in the fuel tank 6 E through the suction pipe 27 A, Oil transfer joint 9 A, It is sent to the carburetor 12 via the oil transfer joint receiver 10A. The liquid fuel is gasified by the heated vaporizer 1 2, It is blown out from the flame 9 5 of the burner 1 4, The fuel is ignited at the flame port 95 and burns in the combustion chamber 15. At this time, The room temperature detected by the room temperature sensor 1 5 3 Based on the difference from the set temperature set by the room temperature setting switch The controller 950 controls the drive of the electromagnetic pump 13 to change the amount of liquid fuel sent to the carburetor 12, Adjust the calorific value of combustion appropriately. Combustion starts, When the flame sensor detects a flame current higher than the preset current value, The fan fan is energized in the evening and the blower fan rotates to suck indoor air. In addition, The rotation speed is controlled by the controller 950. The inhaled indoor air is Steals radiant heat obtained in combustion chamber 15 As hot air along with the combustion gas, it blows out from the outlet 5 to the outside (indoor) of the main unit 1, The room temperature rises and controls at the optimal temperature. (Embodiment 2) FIG. 80 is a perspective view showing Embodiment 2 relating to the formation position of an upper fueling port of a fueling tank. In this embodiment, The upper surface 6 d of the refueling tank and its adjacent two side surfaces 6 e, 6 e forms a slope 5 0 1 with a constant angle between An oil supply port 26 and a closing means 600 for closing the opening and closing rotation are provided on the inclined surface 501, On this slope, An oil meter 25 that can visually confirm the full state is provided near the oil filler 26. In the above configuration, The tank is formed with a constant angled inclined surface 501 so as to have a minimum volume cut. By placing an oil meter 25 near the oil inlet 26 on the inclined surface 501, Refueling can be done while looking directly at the oil meter 25, The fuel can be prevented from overflowing. Also, Compared to the case where the oil meter is formed on the side of the tank, the oil meter 25 can be viewed in a comfortable posture. Other configurations and operations are the same as those of the first embodiment. (Embodiment 3) Fig. 81 shows Embodiment 3 of the refueling tank. In this example, A refueling port 26 is formed on the upper side surface of the refueling tank 6F, Oil filler cap 24 is screwed into oil filler 26, Refueling port 26 cannot be opened when the main unit is mounted. On the bottom side of tank 6F, Evening attachment detection means 900 a, Water detection means W and fuel amount detection means 75 are provided. Tank mounting detection means 900 a A magnet 910 placed in the bottom recess of the tank 6F, And a reed switch 911 arranged on the tank mounting table 1d side so as to face the magnet 910. Water detection means W Same as the first embodiment, Also, The fuel amount detection means 75 0 Guide rods 7 6 0 standing inside water tray W 1, A magnet-equipped float # 61 is provided along the guide rod so as to be movable up and down as the liquid level of the fuel fluctuates. A lead switch is arranged on the tank mounting table 1d side facing this float 761, as in the first embodiment. The lead switch operates by the up and down movement of the float, so that it is possible to detect the running out of fuel. Other configurations are the same as those of the first embodiment, Its description is omitted. (Embodiment 4) FIG. 82 is a sectional view showing Embodiment 4 of the fuel amount detecting means. The first, In the second embodiment, As the fuel amount detection means 7500, An example is shown in which the float 761 is installed on the water tray W1. As shown in Fig. 82, It may be configured to be arranged at the lower end of the suction pipe 27 A. A cylindrical float 761 is externally fitted to the cylindrical suction port body 766 fixed externally to the lower end of the suction pipe 27A so as to be vertically movable. With a magnet 7 6 3 built in its inner surface, The lead switch 753 built in the suction port body 7 6 6 detects and operates. It may be configured to be able to detect running out of fuel. Other configurations are the same as the above embodiment, The description is omitted. (Other Embodiments) It is not limited to the above embodiment of the present invention, Many modifications and changes can be made within the scope of the present invention. For example, In the above embodiment, Refueling join, In the above examples, the return oil joints are extended laterally from the top surface of the oil tank. Not limited to this, In the upper part of the refueling tank, Not only on the top, A configuration projecting from the side may be adopted. Also, In the above embodiment, Tank mounting detection means, Fuel amount detection means, And an example in which all of the water detection means are provided, Of these, a configuration combining one or two means may be used. Similarly, In the control operation of the control unit, The tank mounting detection means, Fuel amount detection means, The operation may be controlled on the basis of an input signal from the water detection means alone or a combination of the two means. As explained above, According to the present invention, Abolished the fuel tank that temporarily stores fuel, Directly feed fuel in the refueling tank to the oil pump I tried to oil, There is no need to attach the filler port of the fuel tank to the fuel tank, The filler cap is not wet by the fuel in the fuel tank, Especially because the fuel tank is not required, The number of components can be reduced. Moreover, On the bottom side of the refueling tank, Tank mounting detection means, Fuel amount detection means, In addition, at least one water detection means is provided, Since the operating state is controlled by these input signals, Usability can be improved. [Sixth Embodiment] Fig. 83 is a perspective view of a petroleum heating apparatus according to the present invention, as viewed from the front of the main body. FIG. 84 is a perspective view of the oil heating equipment as viewed from the back thereof. Figure 83, As shown in Figure 84, In oil heating equipment, The appearance of the body A1 that houses the combustion section and the oil tank is Front plate A 6 with force bar on the front, A side back plate A 7 covering the side and back, It is formed in a box shape with a lower opening from the upper plate A 8 that covers the upper surface, The main body A1 is placed on the table A5. At the bottom of the front plate A 6, An outlet A2 for blowing warm air into the room is formed, At the upper part of the front plate A6, an operation unit A3 in which switches for switching the operation state are accommodated is arranged. The upper plate A 8 has an outlet A4 b for the oil tank, A tank lid A4 is provided at the outlet A4b so as to be freely opened and closed. On the back side (Fig. 84) of side back plate A7, A convection fan A 9 that sucks indoor air is located, The convection fan A9 is guarded by a net-like convection guard A10 so as to prevent dust from being sucked. Also, On the back side of the side back plate A 7, Detect indoor temperature A temperature sensor A11 is provided. FIG. 85 is a schematic diagram showing a liquid fuel combustion device and its fuel path in the oil heating equipment of FIG. 83. Liquid fuel combustion device A Oil tank A 1 2 that can be removed from main unit A 1, The first connection means A 13 and the second connection means A 17 for connecting the fuel tank A l 2 to the carburetor A 15 of the combustion part A 25 when the fuel tank A 12 is mounted on the main body. , An electromagnetic pump A 14 as an oil pump for sending fuel from the fuel tank A 12, A vaporizer A 15 which heats the fuel from the electromagnetic pump A 14 into vaporized gas, A burner A 16 that blows out the vaporized gas of the vaporizer A 15 from the nozzle and mixes it with the combustion air to burn; An air valve A 18 as a shut-off valve that sends air to the oil supply path and shuts off fuel supply to the electromagnetic pump A 14 side; An oil supply path B for connecting these members to supply fuel from the fuel tank A 12 to the carburetor A 15; A return oil path C for returning partially vaporized fuel from the vaporizer A 15 to the fuel tank A 12 is formed. In oil transfer route B, The connection between the first connection means A 13 on the oil supply side of the oil tank and the electromagnetic pump A 14 is performed by piping A 21. Also, The electromagnetic pump A 14 and the carburetor A 15 are connected to each other by a pipe A 22. In return oil path C, The return oil piping A23 connects between the vaporizer A15 and the second connection means A17 on the return oil side. A connecting means A 1 3 for connecting the fuel tank A 1 2 to the combustion section A 25, A 17 is A first connection means A 13 provided in the middle of an oil supply path B from the oil supply tank A 12 to the electromagnetic pump A 14; A second connection means A 17 is provided in the return oil path C for returning partially vaporized fuel from the carburetor A 15 to the fuel tank A 12. Each connection means A 1 3, A 17 is The connection joint on the oil tank side, Combustion section connection The structure is separated from the joint receiving part. Also, As described below, On the lubrication tank A12 side, First and second connection means A 13, A 17 joint connection A l 3 a, A 17 a is integrated to form a joint A 47, Also, The first and second connection means A 13, A 1 7 connection joint receiver A 1 3 b, A 17 b is integrated to form a joint receiving portion A 100 (FIG. 107), It has a compact structure. FIG. 86 is a view showing a state where the front plate side of the main body of FIG. 83 is partially cut. As shown in the figure, When viewed from the front of body A1, On the left is the combustion section A 25, A fuel tank A12 and an electromagnetic pump A14 are provided on the right side. The left side of body A 1 A combustion section A25 incorporating a burner A16 and a vaporizer A15, A combustion section frame A 26 surrounding the periphery of the combustion section A 25, It consists of a combustion section frame A26 and a front of the combustion section frame A27 which covers the upper front part of the combustion section frame A26. Combustion section A 25 Vaporizer A 15 and Pana A 16 and Pana box A 2 8 for storing PANA A 16 A parner partition plate A 29 for fixing the burner box A 28, And a combustion chamber A 30 surrounding the flame of Pana A 16. FIG. 87 and FIG. 88 show the configuration of the vaporizer A 15 and the parner A 16. As shown in the figure, The vaporizer A 15 A vaporizing element A15a, which heats and vaporizes the fuel inside the body, A nozzle A 31 ejecting the fuel vaporized by the vaporizing element A 15 a, 21 dollars A 3 2 which open and close the hole of this nozzle A 3 1, A solenoid valve A33 connected to the needle A32 to move the dollar A32, A fuel inlet A 15 b for supplying fuel to the vaporizing element A 15 a, A return oil pipe A2 3 for sending out the fuel inside the carburetor A15 when the operation is stopped, Banner A The heat recovery unit A 15 c recovers the combustion heat of 16. The vaporizing element A 15 a It is made by sintering fine particles of ceramic into a cylindrical shape. Evening generated when the fuel is vaporized is deposited from the surface of the vaporizing element A15a toward the inside. The fuel inlet A 15 b of the carburetor A 15 The outer stainless steel pipe A3 4 It has a double structure with the inner copper pipe A22. The stainless steel pipe A 3 4 on the outside is Reduces the heat transfer from the vaporizer A15, This is to suppress the temperature rise of the fuel entering the carburetor A15. Also, The diameter of the stainless steel pipe A34 is larger than the copper pipe, The heat conduction from the stainless steel pipe A34 to the copper pipe is further suppressed. The tip of the copper pipe A22 is The position is outside the vaporizer A 15. Solenoid valve A 33 An electromagnetic coil A 3 3 a wound in a coil shape, A movable piece A33b which is movable in the axial direction together with the needle A32 inside thereof, The attracting piece A33c that attracts and moves the movable piece A33b in the nozzle closing direction by excitation of the electromagnetic coil A33a, And a pressing spring A33d for urging the movable piece A33b in the nozzle opening direction. In the solenoid valve A33 of the above configuration, By energizing and de-energizing the electromagnetic coil A 33 Movable piece A33b adsorbs to and detaches from adsorption piece A33c. The needle A 3 2 connected to the movable piece A 3 3 b moves, The hole of the nozzle A31 of the vaporizer A15 is opened and closed. Pana A 16 A mixing pipe A16a for mixing the combustion gas vaporized by the vaporizer A15 with the primary combustion air; It is composed of a flame port A16b that burns the mixed combustion gas. Pana box A 28 As shown in FIGS. 89 and 90, The upper part is open and it has a box shape that can accommodate Pana A 16, On the bottom side, a substantially rectangular square hole for attaching the flange of the mixing pipe of Pana A 16 is formed, On the side, mounting holes for the ignition heater A35 and the frame sensor A36 are provided. A bottom cover A37 is attached to the lower surface of the parna box A28. Burner cover A 37 In the shape of an inverted chevron, It is located below Banner A 16 It is fixed to burner box A28 with sound absorbing material Absorption of combustion noise, The temperature of the parner itself is prevented from lowering. Pana partition plate A 29 As shown in FIGS. 89 and 90, The left and right ends and the back side are bent upward, and the front side is bent diagonally downward. A substantially rectangular square hole is formed in the center, The upper opening edge of the banner box A28 is fixed around it, The burning flame of Pana A 16 passes through the square hole. Also, Around the partition plate A29, a plurality of mounting holes for the combustion chamber A30 are provided. Combustion chamber A 30 As shown in Figure 89, Enclose the burning flame of Pana A 16 from all sides, An opening is formed on the upper front side, It consists of A38 before the combustion chamber and A39 after the combustion chamber. A 3 8 in front of the combustion chamber Bend the left and right inward, The upper part is inclined slightly inward, The lower side is bent outward and fixed to the partition plate A29. Also, A 3 8 in front of the combustion chamber The heat-resistant material is used so that it will not burn out even if abnormal combustion occurs. When viewed from the top, it has an inverted U shape, The left and right front parts are bent inward to form erected parts, Installed in front of combustion chamber A38. Above the rear wall of A39 after the combustion chamber And Also, The lower side is bent outward and fixed to the partition plate A29. The left and right sides of A 39 after the combustion chamber are cut and raised pieces A 39 a, A3 9 b are provided respectively, Part of the wind from the convection fan A9 flows into the combustion chamber A30, As the secondary combustion air, the combustibility is improved and the combustion temperature is reduced. The upper part of the rear part of A3 9 after the combustion chamber is shaped to be extruded inwardly, An air hole A3 9 c is formed in that part, A part of the air flow from the convection fan A9 arranged on the back side flows into the combustion chamber A30, The secondary combustion air is used to suppress the rise of the combustion flame. A38 before the combustion chamber and A39 after the Both inside, Heat-resistant paint or black treatment is applied to the outer surface, The heat resistance is improved. The combustion section frame A 26 As shown in Figure 89, Inverted U-shaped box shape It is arranged so as to surround the combustion chamber A30, The convection fan A9 sucks the air in the room to form a passage for the air that has taken the heat of the combustion chamber A30. This combustion section frame A26 The left and right sides of the side back plate A7 of the main unit A1 and the back side are fixed to the table A5 with female screws. The combustion section frame A2 6 is A slope A26a is formed by cutting the upper front diagonally, A locking portion for fixing the louver of the outlet A2 is formed in the front portion in a bent shape. On the slope A2 6a, After attaching the burner A25 incorporating the Pana A16 and the vaporizer A15 to the burner frame A26, A27 in front of the combustion section frame can be mounted diagonally above the front part of the main body A1. A 27 before the combustion section frame The convection fan A 9 guides the air taken in by the convection fan A 9 to the outlet A 2 on the front of the main unit A 1. On the front side, the convection fan protects the main unit when the air flow decreases for some reason. A device is provided. Also, The structure of A 27 in front of the combustion section frame has a double structure, It is designed to prevent local thermal effects. The right side of body A 1 As shown in Figure 92, A lid A4a for opening and closing the tank lid A4 on the top of the main unit A1 to removably store the refueling tank A12, A detection table A40 (FIG. 86) which is disposed on the bottom side of the storage section A4a and has one component member of a fuel amount detection means A69 and a water detection means A70 described later; In storage section A 4 a, A connection receiving part A100 (Fig. 107) on the combustion part side is provided, in which the connection part A47 on the fueling tank side is attached and detached when the main unit of the fueling tank A12 is mounted. ing. Tank storage room A 4 a The tank is separated by a tank guide A41 (Fig. 86) that guides the fuel tank A12 when the tank is attached or detached. At the right front of this tank guide A41, At the part where the force was applied diagonally, A tank guide fixing member A42 for fixing the joint receiving portion A100 is attached. In addition, Storage room A 4 a Since the conventional fuel tank was abolished, The volume of the fuel tank can be allocated to increase the capacity of the refueling tank or to reduce the volume of the main body, There is an advantage that the space at the place of use is small and does not take up space. The shape of the insertion part including the tank outlet A4b (Fig. 92) of the storage part A4a is As shown in Figure 92, It is a little larger than the shape seen from the top of refueling tank A 1 2 and has almost the same shape. The left side is almost perpendicular to the front and rear sides of main body A1, The right side is almost perpendicular to the front and rear sides of main unit A1, The front and rear corners are both rounded. Also, In the right front corner, As shown in Figure 101, The tank guide fixing member A42 supporting the connection joint receiving part A100 on the combustion part side is fixed from the upper surface A8 of the main body A1 It is located below at a distance. (Composition of refueling nozzle) Fig. 9 1 is a perspective view of refueling tank A 1 2 as viewed from the rear side. FIG. 92 is a plan view showing a state where the refueling tank is stored in the tank storage chamber A4a. As shown in the figure, Oil tank A 1 2 Substantially flat oil tank left member A 1 2a A right-angled lubricating ink member A1 2b press-formed into a U-shaped cross-section with a left-side open container is joined by adrian processing to form a substantially rectangular parallelepiped shape. , It is almost rectangular when viewed from the top, The corners before and after your side are rounded. for that reason, When inserting refueling tank A 1 2 into storage section A 4 a, As shown by the two-dot chain line in Fig. 92, Even if you try to insert it into storage room A 4a with the left and right reversed, The front and rear corners of the right lubrication tank A 1 2b hit the right and left R-shaped corners of the tank outlet A 4 b, Tank A 1 2 cannot be inserted. On the lubrication tank right member A 1 2 b side, A handle A43 consisting of a metal ring A43b attached to the top and bottom of the tank and a resin grip A43a fixed to the center thereof; A fuel inlet A4 4 formed on an inclined surface A1 2c formed by connecting the three sides of both sides and the upper surface, A closing means A 19 for closing the oil supply port A 44 is provided. Also, On the side near the blocking means A 19, An oil level meter is installed to visually check the fuel level in the fuel tank A 1 2 The side near this oil meter, That is, A concave portion A1 2d is formed in which the right front corner of the tank right member is depressed inside. A connection joint A47 on the oil tank side is fixed to the recess A12d. This connection joint part A 47 is By being fixed to the recess A 1 2 d of the oil tank, It is set so that it does not protrude outward from the substantially rectangular tank projection surface, It is designed to fit in a substantially rectangular tank storage room A4a. On the bottom side of refueling tank A 1 2 The water tray A 71, which is a component of the water detection means A 68 (Fig. 91) for detecting water in the tank A12, is protruded, To protect this water pan A 7 1 A tank leg A50 projecting downward is welded and fixed around the periphery. On the top side of refueling tank A 1 2 Small air hole A 5 1 (approximately 1. About 5 mm) The inside of the refueling tank A12 is kept from being under negative pressure. This air hole A5 1 has Even if refueling tank A 1 2 falls, fuel in tank A 1 2 will not leak from air hole A 5 1 An air hole closing means A52 (FIG. 93) for closing the air hole A51 is provided. FIG. 93 is a sectional view showing the air hole closing means A52. As shown in the figure, Air hole closing means A 52 Of bellows type, Bellows A4 8 provided on the inner surface side of air holes A5 1, An annular bellows for holding this inside is composed of a guide A49. Bellow A4 8 It is made of elastic rubber, A4 8b around it and A4 8c in the center are thick, Others have a thin shape, A small hole A48a is formed in the thin portion. Bellow Guide A49 It has a Z-shaped cross section, A4 8b around bellows A4 8 A hole A49a is formed in the center. In the above configuration, By any chance If refueling tank A1 2 falls, Refueling tank A12 fuel comes into contact with bellows A4 8 in A4 9 Bellows A4 8 move in the direction of air hole A 51, The central thick part A4 8c of the bellows A4 8 blocks the air hole A5 1, Refueling evening In order to prevent the fuel in Al 2 from leaking out from air hole A5 1, Also, Normally, air enters and exits through a small hole A48a in the hole A48. (Structure of connection joint) Fig. 94 is a perspective view showing the structure of the connection joint. Fig. 95 is a cross-sectional view showing the joint A13a on the oil supply side. FIG. 96 is an exploded perspective view showing a connection state with the suction pipe A20 on the tank side. Fig. 97 is a cross-sectional view showing the joint A17a on the return oil side. FIG. 98 is an exploded perspective view showing a connection state with the pipe A63 on the tank side. As shown in Figure 94, The connection joint A4 7 on the tank side The connection joint A13a on the oil supply side and the connection joint A17a on the return oil side are integrated. Each connection joint A1 3a, Al 7a is Joint body A 55 Valve mechanism A56, With valve retainer A5 7 The base flanges A55 d of the main bodies A55 are connected to each other and integrated. This connection joint A4 7 It is located in the recess A 1 2 d formed in the right front corner on the side of the refueling tank A 12 It is fixed with screws A54f to the bottom surface of the recess A12d of the lubrication tank A12 via the packing A53 with the joint holding plate A54. Each joint body A5 5 As shown in Figure 95, A cylindrical body A5 5a on the tip side, A tubular projection A55 e protruding from each body A55a toward the oil tank side A 5 5 f It is formed of synthetic resin from a base end flange 55 d that protrudes radially outward at an intermediate portion of the protrusion A 55 e, Both connection joints A1 3 a, The base flanges A55 d of A17a are connected to each other and integrated. The body A 5 5a has A cylindrical tapered portion (closing surface) A55b, whose diameter is gradually reduced downward from its lower end, At the lower end of the tapered portion A 55 b, a cylindrical portion 55 c maintaining a predetermined diameter and a predetermined length is integrally and continuously formed, A valve mechanism A56 is provided inside. Each valve mechanism A 56 installed inside the cylindrical body A 55 Oil supply path B from oil tank A 12 to electromagnetic pump A 14 (Fig. 85) This is to shut off the return oil path C from the vaporizer A 15 to the oil tank A 12 so that it can be opened and closed freely. It is composed of a valve element A59, a valve element ring A60, and a valve element spring A61. Valve body A 59 is Body A 55 of the joint body A 55 Part of A5 5b, And a shape substantially similar to the inner shape of the cylinder A55c. The joint body A55 is shaped so that it can reciprocate inside. That is, Valve body A 59 is A substantially conical plug (closing surface) A59b It is connected to the lower end of the plug part A59b and is thinner than the cylindrical part A55c, And a long columnar movable part A59a, An annular ring packing A60 is provided on the tapered portion of the plug portion A59b so as to be able to pivotally contact the tapered portion A55b of the joint body A55. The length of the movable part A 5 9 a is In order to control the connection and disconnection of the stopper part A59b and the taper part A55b of the main body A55, With the O-ring packing A60 of the plug A59b close to the inside of the taper A55, the valve is closed. The length is set so that the tip protrudes from the cylindrical portion A55a. Valve retainer A 57 The upper hole of the cylindrical body A55a is sealed via the O-ring A58, An annular concave groove is formed on the back surface to make it easier to receive the valve body spring A61. The disc spring A 6 1 Inside the body A 55 Top valve It is interposed between the presser A 57 and the plug A 59 b of the valve body A 59, The valve body A 59 is urged in the valve closing direction. The proximal flange A 55 d is for both joints A 13 a, A17a is formed in a substantially rectangular plate shape extending radially outward to integrally connect the An annular joint packing A53 is fitted inside the flange A55d, Overhang A 5 5 e, It is designed to prevent fuel leakage from around A55F. A5 5e on the tank side A 55 f is Formed into a tube, The inner side of the base end flange A55d is inserted inside from the opening A64 formed in the tank wall of the oil tank A12, The ends of the suction pipe A20 and the return pipe A63 are connected to the internal passage. The level of this internal passage is It is located above the fuel level of the fuel tank, The fuel in the tank is prevented from flowing to the body A55a side carelessly. Overhang A5 5 e, The internal passage of A5 5 f As shown in Figure 97, The suction pipe A20 and the return pipe A63 are set to a diameter that can be fitted inside, The pipe fixing member is formed to have a large diameter so that the pipe fixing member can be fitted from the middle of the passage to the inside of the tank. At the step A55r between the large-diameter passage A55q and the small-diameter passage A55s on the outer end side, a drawer portion A20a of a suction pipe A20 and a return pipe A63 are provided. A63a (Fig. 98) can be positioned. The small passage A5 5 s (Fig. 97) It communicates with the valve chamber of the body A55a (Fig. 95). Overhang A5 5 e (Fig. 95, (Figure 96), At the inner end of A5 5 f (Fig. 97) Slit hole A5 5 g (Fig. 96) penetrating in the radial direction, A5 5 m (Fig. 98) is formed, It is set to be able to expand the diameter by taking advantage of its properties. This slit hole A 55 g, A5 5 m Insertion grooves A5 5J, which can engage with the cord A5 of the suction pipe A20 and the return pipe A63 5 5 n (Fig. 96 (b), Figure 98 (b)) is formed. In addition, As shown in Figure 96, The dimensions in the tank of the protrusion A55e on the oil supply side are It is set shorter than that of the protrusion A55f (Fig. 98) on the return oil side, The connection of the suction pipe A 20 is made easy. The suction pipe A20 is Formed into an inverted L-shape, The upper horizontal part is connected to lubrication joint A1 3a (Fig. 95), The lower end of the vertical portion reaches near the bottom of the refueling tank A12 to suck up the fuel in the refueling tank A12, and is connected to the suction port A66 (Fig. 100). At the tip of the horizontal part of the suction pipe A20, When connecting with connection joint A47, A flange-shaped tie-down portion A20a (Fig. 96) for positioning the ring is formed. The protruding part A 55 f (Fig. 98) on the return oil side is It is formed longer than the protrusion A55e on the oil supply side, A slit hole A5 5k above and below it, A 55 m is formed. Upper and lower slit holes A5 5k, A5 out of 5 m The upper slit hole A 55 k is set larger than the lower slit hole A 55 m, The inner diameter is slightly larger than the outer diameter of the return pipe A63. Inside there is a hole into which the return pipe A 63 is inserted, A stringing groove A55n for locking the stringing portion A65a of the pipe fixing member A65 outward is formed. Return pipe A63 is In order to return partially vaporized fuel from the carburetor A12 to the refueling tank A12, In the refueling tank A12, it is bent into an L shape, The pipe outlet A63b is disposed facing upward. this is, Fuel in fuel tank A1 2 rises abnormally due to temperature difference. Even when With the pipe outlet A63 protruding above the fuel level in the fuel tank A12, This is to prevent fuel from inadvertently leaking to the combustion section. The suction pipe A 20 and the return pipe A 63 protrude and the projection A 55 e 5 5 f A pipe fixing member A65 having a C-shaped cross section as shown in FIGS. 96 and 98 is provided. Pipe fixing member A6 5 The protrusion A5 5 e on its outer surface, A5 5 f internal insertion groove A5 5 j, A5 5n is formed with a flange-shaped cord portion A6 5a that can be engaged with A slit hole A65b is formed in one direction, Its inner diameter is slightly smaller than the outer diameter of the suction pipe A20 and the return pipe A63. In addition, The material of the joint body A 55 (Fig. 95) is not limited to resin, It may be metal, Also, Body A5 5a, Tapered part A 5 5 b, The cross-sectional shape and the like of the cylindrical portion A55c are not limited to a circle. The joint presser plate A54 that fixes the connection joint section A47 to the lubrication tank A12 is As shown in Figure 94, A metal plate A54a is formed by cutting and raising the center of the metal plate upward. The cut and raised piece A 5 4 a Hypothetical join A1 3 a, The valve holder A57 of A17a is pressed from above to hold it so that it cannot escape from the body A55a. The connection joint A1 3a is connected to the center of the cut and raised piece A5 4a. A1 7a overhang A5 5e, A relief hole A 5 4 b penetrating A 5 5 f is formed, The periphery of this relief hole A54b is a peripheral holding part A54d with a rib A54c holding the circumference of the connection joint part A47. Also, From the lower central part of the escape hole A5 4b to the central holding part A54e, both connecting joints A13a, It is extended between Al 7a. The peripheral holding part A5 4d and the center holding part A5 4e are It is fixed to the lubrication tank A12 with screws A54f together with the proximal flange A55d of the connection joint A47. Also, The escape hole A54b and the center holding part A54e prevent the left and right position of the connection joint part A47 from shifting. This connection joint part A 47 As shown in Figures 92 and 94, In order to prevent the connection joint part A47 from coming into contact with other members when the fuel tank A12 falls over, A cushion cover A120 having an L-shaped cross section is covered from the upper surface of the fuel tank A12. The outer surface of this cushion cover A120 is a flat guide surface A120a, The protective cover A covers the air valve Al 8 (Fig. 85) of the connection joint receiving part A 100 (Fig. 85). It functions as a guide when the refueling tank is mounted on the main unit. The suction port A66 at the lower end of the vertical section of the suction pipe A20 (Fig. 100) A braided part is formed in the same manner as the connection part with the connection joint part, Suction port A66 is connected. Suction port A6 6 It is formed in a substantially cylindrical shape, With multiple feet at the lower end, A stainless steel mesh filter A66a was simultaneously processed and inscribed at the base, A pair of slit holes A66b for connecting the suction pipe A20 is formed on the upper side to face each other. The suction pipe A20 is connected to the upper end. Suction port A6 6 As shown in FIG. It is attached to the hole of the suction port fixing plate A 67 of the oil tank A1 2 so that it cannot be moved, Make sure that the suction port A66 does not collide with the inner wall of the oil tank A12. I have. In the above configuration, The procedure for assembling the connection part A 47 to the lubrication tank A 12, the suction pipe A 20 and the return pipe A 63 is as follows. Refueling tank Left and right members A 1 2a, After pressing A 1 2b, Refueling evening left member A1 2 a, And before joining the right member A 1 2 b The connecting joint A47 is fixed to the specified position of the right member A12b of the refueling ink via the packing A53 (Fig. 97) with the joint holding plate A54 (Fig. 95) and screws. . At this time, Joint valve retainer A 57 Since it is pressed from above by the cut-and-raised pieces A54 of the joint holding plate A54 (Fig. 95), The valve retainer A57 is held by the cut-and-raised piece A54a of the joint retainer plate A54 without protruding from the connection joint portion A47. From the inside of the lubrication tank right member A 1 2 b, Projection A55 e of joint body A55 (Fig. 95), A5 5f (Fig. 97) The method of inserting and fixing the suction pipe A20 and the return pipe A63 respectively is as follows. Suction □ After incorporating A66 into suction pipe A20, Fit the 0-ring A64 to the end of the tie-down section A20a (Fig. 96) of the suction pipe A20, Fit it into the protrusion A55 e of the joint body A55. afterwards, The pipe fixing member A65 is inserted through the slit hole A65b into the suction port side of the suction pipe A20 from the cord section A20a. Push in the connection joint section A4 7 side, Push the tie A65a of the pipe fixing member A65 into the inner tie groove A55J of the protrusion A55e until it is inserted. Then, Pipe fixing member A6 5 is reduced in diameter, The suction pipe A20 is fixed to the protrusion A5 5 e, Connection Joint part A47 can be prevented from falling off. How to fix the return pipe A 63 As shown in Figure 98, Return pipe Fit the O-ring A64 at the end of the tie-down part A63a of A63, When fitting it into the protrusion A5 5f hole of the joint body A55, When the return pipe A63 passes through the large hole of the slit hole A55k of the projecting part A55f of the joint main board A55, The return pipe A 63 is arranged upward. afterwards, Insert the pipe fixing member A65 from above the return pipe A63 through its slit hole A65b, Push it into the overhang A5 5 f, Push the tie A6 5a of the pipe fixing member A65 until it is inserted into the inner tie groove A55 n of the protruding part A5 5f. Pipe fixing member A6 5 is reduced in diameter, Return pipe A6 3 is fixed to protrusion A5 5 f, It is possible to prevent the connection joint part A47 from falling off. in this way, When connecting suction pipe A20 or return pipe A63 to connection joint A47, It can be easily connected without welding using the pipe fixing member A65, It is suitable for use in places and places where the space for assembly processing is small, Also, Since parts can be disassembled, maintenance costs are reduced. (Composition of tank filler port) It is sectional drawing of a tank filler opening. As shown in the figure, Oil tank A 1 2 An inclined surface A 1 2c is formed between the upper surface and the two side surfaces adjacent to the upper surface and has a slope of at least 30 degrees downward from the upper surface of the tank, An oil supply port A44 is arranged on the inclined surface A12c. Refueling port A44 has a base A44a that protrudes outward from the inclined surface, The opening of the base A44a is openably and closably closed by a pivotable lid member. That is, Refueling port closing means A19 of refueling port A44 Has a hole that fits with the base A44a of the filler port A44 and has a spot on the inclined surface A12c. Fixed plate A8 2 welded and integrated, A movable plate A83, which is rotatably supported by a standing piece A82a on the handle side on the upper side of the fixed plate A82, A lid member A 85 with packing A 84 that is disposed on the inner surface side of the movable plate A 83 and closes the base A 44 of the fuel filler A 44. A coiled spring member A86 interposed between the lid member A85 and the inner surface of the movable plate A83 to press the lid member A85 toward the base A44a of the oil filler port A44; Locking means A87 for holding the movable plate A83 in the refueling position. Fixed plate A 82 It is formed from below the inclined surface A1 2c to near the upper surface of the tank. The movable plate A 83 is The upper surface side of the tank is defined as a pivot point A8 8, A locking means A87 is arranged on the open end side, Even if you try to open the movable plate A 83 with the main body attached, Make sure that the open end does not come into contact with tank guide A4 1 and cannot be opened. The movable plate length is set. The lid member A85 is Formed in a deep dish shape, The outer end flange A89 cannot escape from the annular stopper member A90 formed on the inner surface of the movable plate A83, It is movably locked in a direction perpendicular to the plate surface of the movable plate A83. Packing A 84 An annular member fitted with the bottom convex portion of the lid member A85, The base A44 is pressed by the upper edge of the a. The spring member A 86 is It is arranged in the internal space between the movable plate A83 and the lid member A85. The locking means A 87 The open end side of the movable plate A 83 opposite to the rotation fulcrum A 88, That is, Which is located on the lower end side of the inclined surface A1 2c and on the tank guide A41 side of the tank accommodating chamber, A locking lever A93 with a pin-shaped locking portion A92 supported rotatably around the shaft A96 on the open end side of the movable plate A83; Can be engaged with locking part A92 A hook-shaped locking receiving portion A 94 provided on the fixed plate A 82 so as to hold the moving plate A 83 in the closed position; A lever panel A95 for urging the locking portion A92 in a direction engaging with the locking receiving portion A94. Lever spring A 95 It is wound around the rotation axis A96 of the locking lever A93, One end is locked to the cut-and-raised piece A 9 3 a of the locking lever, The other end is a coil-shaped spring member locked to the stopper member A90 of the movable plate A83, It is located on the inner side of the locking lever A 93, The locking lever A93 is configured to urge the movable plate A83 more outward than the movable plate A83. Lock receiving part A 94 A space is provided between the side wall of the base A44a and the interlocking portion A92, And the base is open to the A44a side. The locking portion A92 is configured to be removably locked. The locking lever A 93 is A part of the outer end side is extended A97 to form a substantially triangular shape, With the locking lever A93 in the locked position, the back is opposed to the tank guide A41, There is a small gap between them that makes it impossible to insert a finger to release the locking lever A93. And When the locking lever A 93 is locked, Although it does not protrude outward from the tank side, With the tank body attached, Even if you try to release and rotate the locking lever A 93, The extended portion A97 of the locking lever A93 comes into contact with the tank guide A41 on the wall of the tank storage chamber, In the configuration described above, the rotation release of the locking lever A 93 is prevented. If the locking lever A 93 is pressed toward the base with the locking lever A 93 locked, The locking portion A92 is disengaged from the locking receiving portion A93, and the locking of the oil filler closing means A19 is released. Tank A 1 2 With the main unit attached, Install the filler port A44 on the slope A12c, And, since the extension A 97 is provided on the locking lever A 93, If you try to release the locking lever A 93 The locking lever A93 is hidden by the movable plate A83, With the back of the locking lever A 93 facing the wall of the tank chamber, It is impossible to reach into the gap, Locking lever A 93 cannot be released. To release the locking lever A 93, Even if the release member is forcibly inserted into the gap between the locking lever A93 and the tank guide A41 to release the locking of the locking lever A93, The extended portion A97 of the locking lever A93 and the open end of the movable plate A83 come into contact with the wall surface of the tank chamber (tank guide) A41, The release of the movable plate A 83 is prevented. for that reason, If you do not remove refueling tank A 1 2 from the main unit, I ca n’t refuel, It is possible to prevent refueling into the main body A 1. In addition, In the above embodiment, Although the example where the locking lever was arranged on the movable plate side was shown, A configuration in which the locking lever is disposed on the fixed plate side may be employed. (Configuration of Refueling Tank Bottom Side) FIG. 100 is a sectional view showing the bottom side of the refueling tank 12. FIG. 101 is a sectional view showing the tank mounting detecting means. As shown in Fig. 100, At the bottom of refueling tank A 1 2 A water detecting means A 68 for detecting water generated in the refueling tank, Fuel amount detecting means A 69 for detecting the amount of fuel in the fuel tank A 12, Tank mounting detection means A70 for detecting whether or not the refueling tank A12 is mounted on the main body is provided. Water detection means A 68 A conductive water tray A 71 installed on the bottom of the conductive tank to store water, An electrode A 72 contacting the water tray A 71, An electrode A 7 3 that contacts the bottom of the oil tank A 1 2; An insulator that electrically insulates the water pan A 71 from the oil tank A 1 2 With watertight packing A 7 4 Water is detected based on the difference in electric resistance between the water stored in the water tray A71 and the fuel. The water pan A 7 1 It is formed separately from tank A12 using stainless steel plate to prevent the occurrence of cracks. The upper surface has a dish-shaped shape or a shape with a downward taper at the center. A peripheral flange A 7 1 a extending radially outward is formed on the outer periphery thereof, The flange A71a is attached to the bottom mounting hole A12d of the oil supply nozzle A12 via a rubber packing A74. Also, The water pan A 7 1 A non-conductive paint is applied to the inner surface from the outside of the contact portion with the electrode A By applying to the outer surface, Eliminates the cause of malfunction when water remains, It enables accurate and accurate water detection. Packing A 74 Oiling nozzle A 1 2 bottom mounting hole A 1 2d An elastic non-conductive material interposed between the peripheral flange A 71 a of the water tray A 71 and The flange A 71 a of the water tray A 71 is sandwiched from above and below. Packing A 7 4 A ring-shaped holding member A75 and a screw A76 arranged on the lower surface fix it around the mounting hole A12d. This allows The water tray A71 is fixed to the mounting hole A12d in a watertight manner. This rubber packing A 7 4 Has non-conductive oil resistance, And is composed of a rubber member having water retention properties, Specifically, NBR (dibutyl butadiene rubber) having excellent oil resistance and fluorine rubber having excellent water repellency are used. In particular, If packing A 74 has poor water repellency, Water accumulates Even after draining, water remains in the packing A74 and the metal part of the oil tank A12, which may cause malfunction. , In this embodiment, Because we used rubber material having water repellency, Accurate and accurate water detection is possible. The electrode A 72 on the water pan A 71 1 side and the electrode A 73 on the tank side Both are mounted on the detection stand A40 outside the refueling tank A12. The electrode A 7 2 on the water tray A 7 1 It is projected from the bottom wall of the water tray receiving recess A40a of the detection table A40 toward the tank A122 side, When the tank A12 is placed, it is a needle-shaped electrode that comes into contact with the outer surface of the water tray A71 or an electrode that has a line contact shape. Tank side electrode A 73 A needle electrode that is exposed to the outer mounting table A40b of the detection table A40 and comes into contact with the bottom surface A12f of the tank A12 when the tank A12 is mounted. Both electrodes A 7 2, By connecting A73 to the power supply, From the power supply to the water tray side electrode A72, Water pan A7 1, Fuel or water inside it, Tank bottom A1 2 f, Tank side electrode A7 3, And an electrical closed circuit to the power supply Water receiver A 7 1 Due to the difference in electrical resistance of the liquid (fuel or water) inside, It can detect the presence of water. In order to increase this water detection accuracy, The mounting hole A1 2d on the tank side for mounting the water pan A71 is bent downward, At intervals at a plurality of locations in the circumferential direction of the bent portion A1 2 d, A narrow A1 2e with a sharp tip is formed to project downward, This needle part A1 2 e functions as the tip electrode on the ink side, The tank side electrode A73 and the tank bottom surface are connected to each other as a conductive path. In addition, The suction port A6 6 that sucks up fuel from inside the tank A1 2 is It is located above the needle A1 2 e, The water in the internal water receiver of the water receiver A 71 is not sucked directly. Also, Inside the bottom of the water pan A 7 1 Cover the area except the outside with non-conductive paint By, Water is left on the packing A74 and the metal part of the oil tank A12 so that it does not cause a malfunction. Also, Inside the refueling tank A 1 2 From the inside of the tank A 1 2 up to the intake port A 66 that sucks up the fuel, By covering with non-conductive paint etc., The harmful effects of water in a method other than the water detection method using electricity can be prevented. On the bottom of refueling tank A12, As shown in Figure 91, The tank leg A50 for welding the water pan A71 is welded around the water pan A71. The shape of this tank leg A50 is Higher than the bottom of the tank that is welded to refueling tank A12, Also, A rib or a U-shaped leg A50a that is higher than the height of the water tray is formed at both left and right ends. For this reason, Take out the refueling tank A 1 2 from the main body A 1 and When refueling with lubrication port A24 up, Oil tank A1 2 bottom, Water tray A7 Protect the surface that comes into contact with the 1 side from scratches or dents even if there is a foreign object, etc. The malfunction of water detection is prevented. Fuel amount detection means A 69 As shown in FIG. A float A77 with a built-in magnet A78, which is located inside the tank A12 and functions as a detected part; A reed switch A79 is installed on the detection table A40 side, facing the float 77, so that the magnet A78 turns on and off in accordance with the approach and separation of the magnet A78. Float A7 7 With the magnet placed on the lower side, It is housed in a permeable cylindrical guide A80 with a canopy so that it can move up and down as the fuel level changes. The lower end surface of the guide A80 is integrally fixed to the inner surface side of the water tray A71 of the water detecting means A68. Lead switch A 79 To face float A7 7, Inspection It is fixed to the lower surface of the central concave portion A40a of the Chidai A40. Guide A80 protects the commercially available refueling hose from contacting float A77 when removing fuel from refueling tank A12. If it is metal processed, it is processed to prevent burrs on the inside. Therefore, When the fuel inside the fuel tank A1 2 decreases to a certain level, The lead switch A799 senses by the magnet of the float A77, The operation is sent to the control unit A80, The display section A81 1 can notify the user of running out of fuel. Tank leg A50 A plate-shaped member that has been pressed, In the center, there is a hole for the escape of the water tray A71, U-shaped legs A50a are formed on both left and right ends in the front-rear direction, Also, At the part corresponding to the rear side of the main body, The tank receiving surface A50d for receiving the lever of the tank mounting detecting means A70 is formed in a substantially Z shape. This tank leg A 50 It is fixed to the bottom side of the lubrication tank A12 in a welded state. (Configuration of tank storage area) (Configuration of detection table) At the bottom of storage room A4a, A detection table A40 on which the refueling tank A12 is mounted is mounted. This detection table A 40 is As shown in FIGS. 100 to 102, Attached to the table A5 below the refueling tank A12, Tank mounting detection means A7 0 for detecting the presence or absence of refueling tank A1 2; A mechanism for mounting the electrode of the water detecting means A68. Detection table A 40 A standing wall A40s is formed on the upper and lower sides at the left and right ends, The tip of the upper standing wall A 40 s has a shape that extends outward. At the approximate center of the detection table A40, Water tray A7 recessed downward 1 accommodation recess A4 0a is formed, On both left and right sides of the accommodation recess A40a, Two long storage recesses A40t are recessed in the front and rearward direction to receive the tank legs A50 on the lower surface of the refueling tank A12. Also, On the lower standing wall on the right side of the detection table A40, A plurality of V-grooves A40c (Fig. 104) for supporting and fixing the lead wire are formed. Accommodation recess A 40 a, On the mounting surface A 40 b (Fig. 100) on the left side of the accommodation recess A 400 t, Water detection means A6 8 electrode A7 2, Square hole with A7 3 contact point going up and down A4 0d, A4 0 e (Fig. 102) Lever receiving part that serves as an electrode A4 0 h, A40 g is provided in two places. At four places in front, back, left and right Tank guide A4 1 Mounting boss A4 0 J for fixing is provided, Near the rear mounting boss, a rail A40k is provided for guiding the tank guide A41 to the side back plate A7. The recess A400n (Fig. 103 (b)) formed on the back surface of the accommodation recess A400a of the detection table A40 includes: A lead switch A79 is attached as a proximity switch of the fuel amount detection means A69. Electrodes A72 of water detection means A68 (Fig. 100) A73 is It consists of an electrode lever A1 15 (Fig. 103 (a)). This electrode lever A1 5 1 As shown in Fig. 103 (a), It is formed by bending a strong stainless steel plate in a step shape, At the bottom of the lead wire connector insertion receptacle A1 5 1a, there is a screw hole A1 5 1b for fixing the detection table, A receiving hole A 15 1 c formed on the distal end side is formed, The tip is bent upward in an L-shape. On the detection table A40 side to be attached to this electrode lever A1 51, Lever One mounting boss A4 0 Q protrudes downward, A fixing hole A 40 is formed in the boss, further, Lever A 1 5 1 near the mounting part A circular convex receiving portion A40h serving as a fulcrum of vertical movement of the projection is formed. How to attach electrode lever A 1 5 1 After inserting the electrode lever A15 1 into the receiving hole A15 Align the screw holes A151b of the lever A151 with the mounting holes A40Q of the detection base A40, and screw them to the boss A4Op. Then, The tip of the electrode lever A1 5 1 has a square hole A4 0d, It will jump out to the front side from A40e. In order to regulate this protrusion size, A rib A40 m protrudes from the back surface of the detection table A40. in this way, The electrode lever A1 5 1 is Because the rocking fulcrum and the fixed part at the base are different, Stress is not concentrated on the fixed part, The durability becomes good. Tank mounting detection means A70 Which is located behind the detection table A40, As shown in FIG. A tank detection plate Al 17 fixed behind the detection table A 40, Attached to this detection plate A1 17 so that it can swing upward and downward, Lever Al 13 that swings in contact with the bottom of the oil tank when oil tank A 12 is attached to the main body, A micro switch A 1 1 2 attached to the detection plate A 1 1 7 so that the switch is turned on and off by the vertical movement of this lever. A lever spring A116 is provided for urging when the lever Al13 moves. Lever Al 13 It is formed in an L-shape in a narrow plan view At one end is formed a boss A 1 1 3b that serves as a pivot point, The other end is formed as a tank receiving surface A113a which protrudes from the tank detection plate Al17 toward the detection table A40 and receives the fuel tank itself. The tank detection plate Al 17 It is formed by bending a plate-like member into a U-shape, Shaft A 1 17 a for mounting the lever on the upright wall, micro Switch A 1 1 2 mounting recess A 1 1 7 b and A square hole Al17c substantially equal to the movable width when the tank receiving surface of the lever A113 moves up and down is formed. Lever spring A 1 1 6 Both ends are locked by the upper plate of tank detection plate A 1 17 and lever Al 13, The lever A113 is urged in the direction of 〇N the microswitch Al12. Assembling of the above mounting detection means A 70 After inserting the lever spring A 1 16 into the lever Al 13 and locking it, Pass the tank receiving surface A 1 13 b of the lever Al 13 through the square hole Al 17 c of the tank detection plate Al 17, afterwards, A1 17 of the tank detection plate A11 Insert the boss A 1 13 b at one end of the lever A 1 13 and secure with the retaining ring. Also , Insert the microswitch Al12 into the pin of the storage recess A111b of the tank detection plate A117 and fix it with the retaining ring to complete. The operation of this tank mounting means A70 is When refueling tank A1 2 is attached to body A1, The tank receiving surface Al 13 a of the lever Al 13 is pushed down by the oil tank A 12, Micro switch A 1 1 2 is open, On state in circuit. vice versa, When refueling tank A 1 2 is not attached to the body, Since the tank receiving surface A 1 13 a of lever Al 13 does not receive the lubrication tank A 12, Pushed upward by lever spring A 1 16 The microswitch Al 1 2 becomes blocked, In the circuit, the state becomes 〇 F F The movable contact of microswitch A 1 1 2 is opened when the evening light is attached, Uses a closed state when the tank is removed, There is a large allowance when the microswitch A112 is operated in the upper and lower strokes of the refueling tank A12. In trouble Occurrence is reduced. (Structure of tank guide) The configuration around the refueling tank will be described. Fig. 106 is a top view of tank storage room A4a, FIG. 107 is an exploded plan view showing the positional relationship between the tank guide and the connection joint receiving portion. FIG. 108 is a front view of the tank fixing member, FIG. 109 is an exploded perspective view showing a connection state between the oil supply pipe and the return oil pipe and the joint receiving portion; Fig. 110 is a sectional view of the lubrication joint receiver. Fig. 1 1 1 is a sectional view of the return oil joint receiver. Fig. 1 12 (a) is a plan view of the rising passage, FIG. 3B is a longitudinal sectional view of the air valve. As shown in FIG. 102 and FIG. 106, Four surfaces around the storage section A4a of the refueling tank 12 are surrounded by tank guide A41. This tank guide A 41 It is formed into a rectangular frame shape in plan view with only the center part on the back side opened by bending the metal plate material, The rear center left and right opening edges are bent outward in an L shape, The upper side of the bent part A 41 c is hooked on the back part of the body side back plate A 7 with a hook. The lower side is fixed with screws. At the bottom of this rear opening A 4 1 d, Tank mounting detection means A 70 is arranged. The lower side of the tank guide A 41 is It is located along the inside of the left and right standing walls A40s (Fig. 102) of the detection table A40, Similarly, the front part is located outside the front wall of the detection base A40 and the boss A40j, Also, The rear side is located between the boss A 40 j and the rising wall A 40 k, The front and rear lower ends are fastened to the detection table A50 by screws. The right corner of the tank guide A 41 is It is cut open from the upper end to near the middle and opened, The tank guide fixing member A42 is fixed to the open end A41a by the two wing pieces A41b cut and raised with screws and screws. ing. Tank guide fixing member A 42 Attaching the joint receiving part A100 and electromagnetic pump A14, A U-shaped box, A connection joint receiving portion A100 is fixed to a predetermined position with a screw on the upper surface, An electromagnetic pump A14 is fixed to the lower surface with screws. The inner surface of the fixing member A42 is When refueling ink A1 2 is attached to the main unit, To the extent that the recesses A12d (Fig. 100) that fix the connection Evening storage room A 4 The joint receiving portion A100 on the upper surface can be connected to the connecting joint A47 on the tank side. The connection joint receiver A 100 The oil-supply-side joint receiver A1 3b and the return-oil-side joint receiver A17b are integrated, and Copper-based outgoing pipe A2 1 is connected to oil-supply-side joint receiver A1 3 b, A copper return oil pipe A23 is connected to return oil side joint receiver A17 b. The connection between the connection joint receiving part A100 and the outgoing pipe A21 and the return oil pipe A23 is as follows. As shown in FIG. Piping A2 1, A2 1 a, a flange-shaped corded portion formed at the tip of A23 Fit the sealing ring A 9 9 on the tip side of A2 3a, Predetermined hole A98c of connection joint receiving part A100, Insert into Α9 8 、 Piping A 21, A2 3 Stringing part A 2 1 a, From the outside of A2 3 a, U-shaped groove A101a formed on the lower side of the pipe fixing plate A101 A 2 3 Screw holes A 101 b formed in the fixing plate A 101 and the joint receiving part A 100, respectively. What is necessary is just to fix both by screwing to Al0a. Outgoing piping A 21 and return oil piping A 23 Using copper-based material, Going The inside diameter of the return pipe A 21 and the return oil pipe A 23 are set to the smaller diameter for the house pipe A 21. In particular, The inner diameter of the injection pipe A 2 1 is 1. It is set to 5 mm, and the inner diameter of return oil piping A 23 is set to 3 mm. Set the inside diameter of the outgoing pipe A 2 1 to 1. If the diameter is larger than 5 mm, the amount of fuel remaining in the outgoing pipe A 21 at the time of fire extinguishing increases, and it is necessary to return the remaining fuel at the start of operation or re-ignition from the carburetor A 14 to the fuel tank A 12. This takes time and causes odor. Also, when the inner diameter of the return oil pipe A23 becomes 4 mm or more, a phenomenon occurs in which air in the pipe is replaced with fuel, making it difficult for the fuel to return to the fuel tank A12, and fuel is accumulated in the pipe. However, it may cause odor. Conversely, if the inner diameter is smaller than 3 mm, only the air is sent due to the resistance of the piping, and it may be difficult for the fuel to return to the fuel tank A12. In addition, a difference is made between the diameters of the two pipes to prevent connection errors during assembly processing. (Structure of the connection joint receiving portion) The connection joint receiving portion A100 is composed of a receiving body A98 fixed to the upper surface of the evening guide fixing member A42 with screws, and a feeder arranged in parallel with the receiving body. It has an oil-side joint receiver A13b, a return oil joint receiver A17b, and an air valve A18 as a shut-off valve arranged in the receiver body A98. As shown in Fig. 110, the oil-supply-side joint receiver A13b is a rod-shaped valve receiver A98 that projects upward from the center of the recess formed on the upper surface of the receiver body A98. a, a substantially cylindrical rubber connection packing A102 mounted on the upper surface of the receiving body A98 so as to cover the periphery thereof, and a packing A1 covering the periphery of the packing A102. Substantially cylindrical shape that receives the lower end flange of A2 and fixes it to the upper surface of the main body A98 with screws And a horizontal tubular passage A98c communicating from the groove A98b formed around the valve receiver A98a to the electromagnetic pump A14 side. The receiving body A98 is formed. In the middle of the passage A98c, an inverted U-shaped rising passage A98d which rises above the passage A98c is formed as shown in FIG. 11 (b). The rising passage A98d is formed in a cylindrical portion A98h integrally formed on the upper surface of the receiving body A98, and a packing A10 is formed in a concave portion on the upper surface of the cylindrical portion A98h. The air valve A18 is fixed with screws via 4, and the outlet A18a of the air valve A18 is open to the upper end of the inverted U-shaped passage A98d. Further, as shown in Fig. 11 (a), the rising passage A98d is a vertically upward crescent-shaped passage A communicating with the joint receiver A13b across the partition wall A98i. 9 8 d 1 and a vertical downward passage A 9 8 d 2 having a circular cross section communicating with the outgoing pipe A 21 on the electromagnetic pump A 14 side, and both passages A 9 8 dl and A 9 8 d 2 The ends communicate with each other above the partition wall A98i. The passage area of the two passages A98d1 and A98d2 is set smaller than the area of the passage A98d1 of the passage A98d2. This is to reduce the amount of fuel remaining at the time of fire extinguishing and to reduce the time required to return the remaining fuel to the fuel tank from the carburetor at the start of operation or re-ignition. This further eliminates the factor of odor generation and returns the fuel to the refueling tank side quickly to shut off the route. The connection packing A102 (Fig. 110) reduces the impact and seals when the valve body A59 on the oil transmission joint A13a side is inserted into the oil transmission side joint receiver A13b. To make a circle A cylindrical portion A55c on the side of the oil transfer joint A13a and a hole A102a into which the valve body A59 can enter are formed on the upper surface of the cylindrical shape. The packing retainer A103 serves to improve the sealing performance by pressing the connection packing A102 from above and to function as a guide when receiving the connection joint A47 from above. There is formed a hole A103a into which the body part A55a and the tapered part A55b on the connection joint A13a side can enter. The air valve A18 is used to take in air from outside the oil supply path to the electromagnetic pump A14 from the oil supply tank A12 to the electromagnetic pump A14, and to shut off the fuel supply in the oil supply path. As shown in (b), the electromagnetic coil A 18 d arranged around the valve chamber A 18 b, and the electromagnetic coil A 18 d is deenergized to move in the valve chamber and the upper valve holder A 1 A18g, which opens and closes the air hole A18f formed in 8e, and a coil spring A18, which urges this valve A18g in the opening direction of the air hole A18ί h, and a communication outlet A18a formed below the valve chamber to communicate with the inverted U-shaped passage A98d on the oil supply side, and the valve body A18g is excited by the electromagnetic coil A18d. Moves to close the air hole A18f, and demagnetize the electromagnetic coil A18d to open the air hole A18f with the biasing force of the coil spring A18h, and the valve body A18g Pass around Thus, air is supplied from the communication outlet A18a to the rising passage A98d. The valve element Al 8 g is composed of a bottomed cylindrical body A 18 i, a valve element A 18 j that is internally provided at the upper end opening, and a spring for urging the valve element A 18 j to the projecting side. A18k is provided to reduce the collision with the valve holder A18e when the air hole A18f is closed. The outer periphery of this air valve A18 has an air valve cover to protect it. -Al 11 is fastened together with the receiving body 98 of the connection joint receiving portion A 100. The air valve cover A111 has at least its lubricated joint receiver A13b side as the vertical surface A111a, which is connected when the lubrication tank A12 is mounted on the main body. A guide function is provided to face the protection cover A120 of the joint portion A47 and guide it. On the other hand, as shown in FIG. 11, the return oil side joint receiver A17b of the second connection means is provided with a valve below the valve hole A98e formed on the upper surface of the receiver main body A98. The valve mechanism A105 is accommodated in the chamber A98i, and a passage A98f from the carburetor A14 is formed in the side of the valve chamber A98i so as to communicate horizontally. The valve mechanism A105 includes a receiving valve element A106 for opening and closing the valve hole A98e, a receiving valve element cap A108 for closing the lower part of the valve chamber A98i, and this cap. Receiving valve body spring A107 interposed between A108 and receiving valve element A106 to urge receiving valve element A106 in the valve hole closing direction, and receiving valve element A An O-ring A109 fitted to the closing surface of 106 and a cap ring A110 for sealing the receiving valve body cap A108 are provided. The reason why the receiving valve element A106 is provided is to receive the valve element A59 of the joint A17a on the return oil side, which is the second connection means, and to remove the odor when removing the oil tank A12. This is to prevent leakage. The receiving valve body spring A107 is brought into a compressed state when the connection joint A17a presses the receiving valve body A106 when the refueling ink A12 is set in the main body. The receiving valve cap A108 guides the lower part of the receiving valve element A106 when the receiving valve element A106 moves downward by a certain distance by the valve element A59 of the connection joint A17a. Concave A receiving portion A108a and a receiving surface A108b of a receiving valve body spring A107 formed around the receiving portion A108a are provided. The receiving valve cap A108 is inserted through the opening of the fuel passage on the bottom side of the connection joint receiving portion A100, and the connection joint receiving portion A100 is fixed to the tank guide fixing member A42. When the tank guide fixing member A42 is pressed in place by screws, the valve guide cap A108 that has been inserted will protrude from the connection joint receiving portion A100. Has been prevented. The connection joint receiver A 17 b has a connection packing A 102 disposed on the receiver body A 98 in the same manner as the first connection joint receiver, and is provided from above the connection packing A 102. Packing retainer A103 is fixed with screws. An electromagnetic pump A14 as an oil feed pump is fixed at a predetermined position below the tank guide fixing member A42. The connection of the outgoing pipe A 21 connected to the electromagnetic pump A 14 and the return oil pipe A 23 from the carburetor A 15 to the connection joint receiving section A 100 is as described above. Insert the O-rings A99 into the ties A21a and A23a of the living piping A21 and the return oil piping A23, and then insert them into the specified holes of the receiving body A98. Then, after passing the pipes A 21 and A 23 through the U-shaped groove A 101 a of the pipe fixing plate A 101, it may be fixed with screws. In the above configuration, the fuel in the fuel tank A 1 2 flows from the connection joint A 13 a to the connection joint receiver A l 3 b by driving the electromagnetic pump A 14. If the suction pipe A20 sucks up, the fuel enters from the lateral direction of the connection joint A47 and the valve mechanism A56 which is opened is opened. Flows into the connection joint receiver A1 3 and the groove A The fuel is sent from the electromagnetic pump A 14 to the carburetor A 15 through the passage A 98 d from the lower end of the air valve A 18 c via the passage A 98 c from the passage 98 b. (Position relation between refueling tank liquid level and connecting means) FIG. 13 is a diagram showing the liquid level of the fuel in the refueling tank A12 and the positional relation between the connecting means. As shown in the figure, at the connection part A47 of the refueling tank A12, the passage A55p through which the fuel of the refueling tank A12 is sucked up and passed is filled with the refueling tank A12 It is arranged above the indicated liquid level L 0, so that fuel leakage at the ink connection part of the connection joint A 47 can be avoided. In the connection joint receiving section A100, the rising end of the riser passage A98d below the air valve A18d A98d i The upper end is set above the fuel level L0 in the refueling nozzle A12 Have been. Here, the fuel level in the refueling tank is the level of the fuel filling display at normal times. Also, even when the fuel level in the fuel tank A12 rises abnormally due to the temperature difference, the fuel tank A12 from the carburetor A15 side of the connection joint part A47 will be The return oil pipe A 63 is set so that the pipe outlet A 63 b is higher than the abnormal fuel level L 1 in the fuel tank A 12, and the fuel returns from the fuel tank to the return oil path. Through the carburetor A15. Also, at this time, even if the fuel is sent from the connection joint part A47 to the electromagnetic pump A14 side, the fuel is not sent any further because the pump A14 is stopped. Further, the position of the air hole A 18 f of the air valve A 18 is set so as to be always above the abnormal liquid level L 1, and the fuel is supplied from the fuel tank A 12 to the air valve A 18. To prevent leakage to the outside. Also, at the connection joint receiving part A100, the air valve A18 Since the upper end of the partition A98i of the rising passage A98d is always above the normal liquid level L0 of the oil tank A12, the air valve A18 is opened during fire extinguishing and the oil supply path When the air is taken into the tank, the rising passage A98d has a large passage area A98d1 on the fuel tank side, so that the fuel is quickly returned to the fuel tank side and the fuel supply is surely shut off. (Structure of the control device) Fig. 114 shows the control of various operation modes by signals from these fuel amount detecting means A69, water detecting means A68, and tank mounting detecting means A70. FIG. 3 is a configuration diagram of a control circuit. As shown in the figure, the control unit 140 is composed of a microcomputer with a built-in CPU, ROM, and RAM, and has a fuel amount detecting means A69, a water detecting means A68, and a tank mounting detecting means A7 on the input side. 0 is connected, the electromagnetic pump drive circuit A118, display unit A143, and valve drive circuit A119 are connected to the output side, and operation control is performed by various input signals. . For example, when the oil tank is pulled out during operation and the tank mounting detection means A70 is OFF (no tank), the signal is input and the pump drive circuit Al18 stops the electromagnetic pump A14. Control to output a signal and output an open signal of the air valve A18 to the valve drive circuit A119 to stop the operation. Also, when the tank mounting detection means A70 is ON, the vaporizer Al5 It is also possible to control to drive the empty baking cleaning operation mode in which the baking is performed. (Operation of Oil Fan Heater) Next, the operation of the above-described oil fan heater will be described. When the fuel in fuel tank A 1 2 becomes empty, open lid A 4 of main unit A 1, take out fuel tank A 1 2 with handle A 4 3, and close means A with handle A 4 3 on top. 1 Remove 9 and refuel tank A1 2 Refueling port A 4 Refuel with 4. In this case, the refueling tank A 1 2 is refilled by placing it on a flat surface with the handle A 4 3 up, so there is no need to turn the refueling tank A 1 2 upside down. Fuel can be easily and reliably replenished without refueling the refueling cap (2). When refueling is completed, open the tank lid A4 of the main unit A1 and set the fuel tank A12 containing fuel in place. At this time, as shown in FIGS. 115 to 118, the lower part of the cushion cover A 120 attached to the connection joint A 47 of the refueling tank A 12 Along the outside of the air valve protection cover A111 of the connection joint receiving section A100, it is guided below the connection joint receiving section A100, and further, the oil tank A12 The connection joint section A 407 is connected to the joint receiving section A 100 on the combustion section side. At this time, in the oil joint A13a of the connection joint part A47, the valve body A59 is fitted with the packing retainer A103 of the oil joint joint receptacle A13b. It is guided and inserted into 103 a, enters the hole A 102 a of the connection packing A 102, and comes into contact with the valve receiver A 98a. At this time, the hole A102a of the connection packing A102 is closed and sealed by the main plate cylindrical portion A55c of the connection joint portion A47, so that fuel does not leak from this connection portion. Furthermore, when the oil tank A12 is inserted into the main body A1, the valve body A59 of the oil feed joint A13a is pushed upward by the valve receiver A98a, and the valve body spring is moved. A61 is in a compressed state, valve body A59 is in an open state, and flows from suction pipe A20 of refueling tank A12 to electromagnetic pump A14 through connection joint A13a. Oil supply path B is open. Similarly, the joint A 17 a on the return oil side of the lubrication tank A 12 performs the same movement, and the valve body A 590 of the connection joint A 17 a Force connection joint receiving portion A 1 0 Packing presser of A 0 A3 of A103 is guided and inserted into hole A103, enters into hole A1002a of connecting packing A102, and returns oil side joint Valve of A13a The body A59 contacts the valve body A106 of the valve mechanism A105 of the receiving body A98. At this time, the connection packing A102 and the cylindrical portion A55c of the connection joint portion A47 are closed and sealed, so that fuel does not leak. Further, when the refueling tank A1 2 is inserted into the main body A1, the receiving valve body A106 of the valve mechanism A105 moves downward to hit the bottom of the receiving valve body cap A108 with the concave portion A108a, After that, the valve element A59 of the return oil joint A17a is pushed upward by the receiving valve element A106, and the valve element spring A611 is in a compressed state, and the valve element A59 is The valve is opened. As a result, the return oil path C returning from the carburetor A15 to the fuel tank A12 via the pipe A23 is opened. When refueling tank A1 2 is attached to main body A1, and when the bottom of refueling tank A12 reaches detection table A40 at the bottom of storage room A4a, tank legs A5 of refueling tank A12 The rear lever contact surface A50d is the tank mounting detection means A70 Lever Al13 lever lever tank receiving surface Al13a is pushed down to turn on the microswitch Al12 on the circuit. When the power switch is turned on by operating the operation switch (not shown) of the oil fan heater with the refueling tank installed, the electromagnetic pump A14 is opened because the air valve A18 is open in the demagnetized state. When driven, air is taken in from the air hole A 18 f of the air valve A 18, and is sent to the oil supply path B. Therefore, the fuel in the fuel tank A1 2 The fuel remaining in the oil supply path B, which cannot be sucked up, is sent to the carburetor A 15, and the return oil is returned together with the partially vaporized fuel remaining in the carburetor A 15. Return to fuel tank A 1 2 from route C so that no fuel remains in the route. In the carburetor A 15, the ON of the operation switch heats the carburetor heater and preheats the carburetor A 15 to a predetermined temperature. When the preheating completion temperature is reached, the air valve A 18 is energized, the electromagnetic coil A 18 d is excited, and the valve body A 18 g moves in the direction to close the air hole A l 8 f, Stop air intake from air hole A 18 f. Then, the oil supply path B flowing from the oil supply tank A 12 to the electromagnetic pump A 14 through the connection means becomes in communication, and the fuel in the oil supply tank A 12 is sent to the oil supply path B. In the carburetor A 15, the fuel sent by the electromagnetic pump A 14 is vaporized to be a gas in the carburetor A 15. Then, the mixture is blown out from the burner port A16b of the Pana A16, and ignited at the burner port A16b and burns in the combustion chamber A30. At this time, based on the difference between the room temperature detected by the room temperature thermistor A11 and the set temperature set from the operation unit A3, the control unit 140 controls the drive of the electromagnetic pump A14 to control the vaporizer. Adjust the amount of heat generated by combustion by changing the amount of liquid fuel sent to A15. When combustion is started and the flame sensor A36 detects a flame current of a predetermined current value or more, a fan motor (not shown) is energized, and the blower fan A9 rotates to suck indoor air. The rotation speed of the fan motor is controlled by the control unit 140. The air in the sucked chamber takes away the radiant heat obtained in the combustion chamber A30, and the combustion gas At the same time, the air is blown into the room from outlet A2 as warm air, and the room temperature rises to control the temperature. When the operation of the main body A 1 is stopped, the drive of the electromagnetic pump A 14 is stopped, and the air valve A 18 is opened, so that air enters the path from the outside, and the supply of fuel is reliably stopped and shut off. As described above, in the present invention, the fuel tank for temporarily storing fuel below the fuel tank is abolished, and the fuel in the fuel tank is directly fed to the combustion section, thereby eliminating the fuel tank. It has the advantage of being able to increase the size of the fuel tank by increasing the size of the fuel tank, making the size of the main unit smaller and more compact, and taking up less space. In such a liquid fuel combustion device, first connection means for connecting a refueling tank to an oil supply path leading to a combustion section, and second connection means for connecting a refueling tank to a fuel return oil path from the combustion section. By integrating them, the connecting means becomes compact, the number of assembling and processing is small, the structure can be simplified, and the whole can be made compact. It goes without saying that each configuration described in each embodiment and each example can be applied to other embodiments within an applicable range. INDUSTRIAL APPLICABILITY As described above, the liquid fuel combustion device according to the present invention can be used for a heater in a winter or a cold region, such as an oil fan heater, in which a refueling tank is extracted from a main body and charged after filling with fuel. Are suitable. The scope of the claims

1. A refueling tank removably mounted in the body of the liquid fuel combustion device,

A combustion unit having a vaporization unit that heats and vaporizes the fuel and a burner that burns the vaporized fuel;

An oil feed pump for feeding fuel from the fuel tank to the vaporizer, and a first connecting part for connecting and forming an oil feed path from the fuel tank to a combustion part when the fuel tank is mounted on the main body. The first connection portion has an oil supply joint provided on the oil supply tank side and an oil supply joint receiver provided on the main body detachably attached to the oil supply joint. Liquid fuel combustion device.

2. A second connection portion is provided for connecting the oil supply tank to a return oil path from the combustion portion,

The said 2nd connection part has the return oil joint provided in the refueling tank side, and the return oil joint receiver provided in the main body side detachable to this return oil joint, The claim characterized by the above-mentioned. 2. The liquid fuel combustion device according to item 1.

3. The liquid fuel combustion device according to claim 1, wherein the oil transfer joint includes a valve mechanism that opens and closes an oil transfer path.

4. The oil supply joint according to claim 2, wherein the oil supply joint, the oil supply joint receiver, and the return oil joint include a valve mechanism for opening and closing an oil supply path. Liquid fuel combustion device.

5. The fuel supply passage according to claim 1 or 2, wherein a shutoff valve for shutting off the supply of fuel from the fuel tank to the combustion section is provided. A liquid fuel combustion device according to the item.

6. The liquid fuel combustion according to claim 5, wherein the shutoff valve is an air valve that shuts off supply of fuel from a fuel tank to a combustion unit by sending air into an oil supply path. apparatus.

7. The fuel supply tank according to claim 1, wherein a passage in the oil supply joint connected to the suction passage in the fuel tank is disposed above a fuel level in the fuel tank. Liquid fuel combustion as described in paragraph 2

8. The fuel passage connecting the refueling tank and the oil pump forms a rising passage rising in an inverted U-shape, and the upper end of the rising passage is disposed above the fuel level in the refueling tank. 3. The liquid fuel combustion device according to claim 1 or 2, wherein:

9. The rising passage is formed on the main body side,

3. The liquid fuel combustion device according to claim 1, wherein the shut-off valve is disposed at an upper end of the rising passage.

10. The liquid fuel according to claim 2, wherein the outlet of the fuel passage of the return oil joint on the refueling ink tank side is disposed above the fuel level of the refueling tank. 10. Combustion equipment.

11. The fuel injection system according to claim 10, wherein the outlet of the fuel passage of the return oil joint is disposed upward so as to be higher than the fuel level of the fuel tank. A liquid fuel combustion device as described.

12. The liquid fuel combustion apparatus according to claim 6, wherein the air intake of the air valve is disposed above a fuel level of a fuel tank.

1 3. The refueling tank has an air hole on the upper surface and the air hole when the tank falls. Claims having a closing mechanism for closing the stoma

3. The liquid fuel combustion device according to item 1 or 2.

14. The liquid fuel combustion device according to claim 2, wherein an inner diameter of the passage of the return oil passage is larger than an inner diameter of the passage of the oil supply passage.

15. The liquid fuel combustion device according to claim 1, wherein the fuel tank is mounted on the main body only in one direction when the fuel tank is mounted on the main body.

16. The liquid fuel combustion device according to claim 1, wherein the oil supply joint on the oil supply tank side is disposed on a side opposite to a joint processing surface of the oil supply tank. .

1 7. The oil supply joint and return oil joint on the oil supply tank side are integrated to form the oil supply tank side joint part, and the oil supply joint receiver and return oil joint receiver on the main body side 5. The liquid fuel combustion device according to claim 2, wherein the liquid fuel combustion device is integrated with a main body side joint receiving portion.

18. The liquid fuel combustion device according to claim 17, wherein the refueling tank-side joint portion is disposed on a side opposite to a joint processing surface of the refueling tank.

19. The liquid fuel combustion apparatus according to claim 17, wherein the refueling tank-side joint portion has positioning means for positioning a pipe in the refueling tank.

20. The liquid fuel combustion device according to claim 17, wherein the refueling tank-side joint section is configured to fasten a pipe in the refueling tank by a tightening process.

2 1. The joint receiving part on the main body side A shutoff valve for shutting off the supply of the feedstock and a protective cover for protecting the shutoff valve,

The joint on the refueling tank side has a cushion force bar to prevent impact,

18. The liquid fuel combustion apparatus according to claim 17, wherein when the refueling tank is mounted on the main body, the two covers serve as tank insertion guides.

2 2. A water detecting unit provided with a first electrode that contacts a water tray provided on the bottom of the refueling tank and a second electrode that contacts the refueling tank in order to detect water in the refueling tank. Has,

The liquid fuel combustion according to claim 1 or 2, wherein at least one of the two electrodes is cantilevered on a detection table and has a fulcrum other than the fixed portion. apparatus.

23. The liquid fuel combustion apparatus according to claim 2, wherein a fuel container for temporarily storing fuel is provided in a return oil path between the combustion section and the second connection section.

24. The liquid fuel combustion device according to claim 2, wherein a cooling unit that cools fuel is provided in a return oil path between the combustion unit and a second connection unit.

2 5. A refueling tank, which is detachably mounted in the tank housing chamber in the main body, a combustion section for fuel combustion, and an oil pump for feeding fuel from the refueling tank to the combustion section, are provided below the refueling tank. A liquid fuel combustion system in which the fuel tank for temporarily storing fuel is eliminated and the fuel in the fuel tank is fed directly to the oil feed pump,

It has a first connection part that connects to the fuel suction passage to the oil supply pump when the refueling tank is installed inside the body, and the connection part on the refueling ink tank side refuels. A liquid fuel combustion device located within the outer and ridge lines of the top view of the tank.

26. A second connection portion that connects to a passage for returning fuel from the combustion section to the fuel tank when the fuel tank is installed in the tank storage chamber is provided in the fuel tank, and the second connection portion is a top view of the fuel tank. 26. The liquid fuel combustion apparatus according to claim 25, wherein the liquid fuel combustion apparatus is disposed within a contour and a ridgeline of the liquid fuel combustion apparatus.

27. The refueling tank is retracted in the direction of the center of the tank from the ridgeline formed by the adjoining side surfaces of the refueling tank. 27. The liquid fuel combustion device according to claim 25, wherein the first connection portion and the Z or the second connection portion are arranged in the space.

28. The refueling tank is retreated toward the center of the tank from the ridgeline where the adjacent side surfaces intersect each other, so that a substantially rectangular space area is defined within the outer and ridgelines of the top view of the refueling tank. 27. The liquid fuel combustion device according to claim 25, wherein the first connection portion and / or the second connection portion are formed in the space area.

29. The fuel tank is retracted on the side surface toward the center of the tank, so that a recess is formed in the outer contour and ridge of the top view of the fuel tank, and the first connecting portion, and the or 27. The liquid fuel combustion device according to claim 25, wherein the second connection portion is disposed.

30. The liquid fuel combustion apparatus according to claim 25 or 26, wherein a member for fixing a fuel suction passage to the fuel pump to a fuel tank is provided. .

3 1. Connect the first connection and Z or the second connection 27. The liquid fuel combustion device according to claim 25, wherein the liquid fuel combustion device is disposed above a liquid level of the fuel of the fuel tank.

32. The fuel tank is provided with a suction pipe for sucking fuel to be sent to a fuel pump, and a suction port for sucking fuel of the suction pipe is located near a lower part in a fuel tank. 27. The liquid fuel combustion device according to claim 25 or 26.

33. The first connection portion and the second connection portion are provided with guide guide members that can be separated from and connected to the refueling tank side and the combustion portion side. Liquid fuel combustion device according to paragraph 5 or 26