KR20050088256A - Liquid fuel combustion device - Google Patents

Abstract

A liquid fuel combustion device in which an oil feed tank (6) having in its upper region an oil feed port (28) and an oil feed cap (22) therefor is removably received in the tank receiving chamber (500) of a device main body (1), wherein there is installed an oil feed port release preventing means which prevents the release of the closing member in the mounted state of the main body of the oil feed tank. The oil feed port release preventing means is formed such that portions of the upper surface of the oil feed tank and its lateral surface are formed as an inclined surface (501), with the oil feed port formed in this inclined surface; in the mounted state of the main body, release of the oil feed cap is prevented by the wall surface of the tank receiving chamber.

Description

LIQUID FUEL COMBUSTION DEVICE}

The present invention relates to a liquid fuel combustion device such as a petroleum fan heater.

FIG. 84 is a partially omitted front sectional view schematically showing an example of a conventional petroleum fan heater, FIG. 85 is a sectional side view thereof, and FIG. 86 is a sectional view showing an oil supply cap and a socket of the oil supply tank.

As shown in FIG. 84, in the conventional petroleum fan heater, the oil supply tank P2 for pre-injecting and storing liquid fuel P4, such as kerosene, is arranged in the inner side of the main body P1. A sufficient amount of liquid fuel P4 is supplied to the fuel tank P3 connected to the lower side of the oil supply tank P2.

The liquid fuel P4 housed in this fuel tank P3 is guided to the vaporizer | carburetor P7 via the oil feed pipe P6 by the fuel pump electromagnetic pump P5. Here, the liquid fuel P4 sent by the vaporizer heater (not shown) provided in the vaporizer P7 is vaporized. P9 is a combustion chamber, and the burner P8 is supported and fixed to the bottom part.

The fuel vaporized by the vaporizer | carburetor P7 is injected finely through a nozzle, is introduced into the burner P8 with the fuel air, and combusts in the flame hole P8a, and the air in the combustion chamber P9 is heated. Then, as shown by the arrow in Fig. 85, the room is sucked through the filter P12 by the blowing fan P11 installed in the fan motor P10 made of a single-phase guide motor or the like provided on the rear surface of the main body P1. Air is blown into the room through the blowing port P13 as hot air together with the heated air and the combustion gas in the combustion chamber P9.

On the other hand, the flame sensor Pl4 provided slightly above the flame hole P8a detects the flame current by the combustion flame, and when it detects a flame current of a predetermined value or more, it energizes the fan motor Pl0, Accordingly, the blowing fan P11 rotates and blows the air sucked in the room into the room through the blower outlet P13 as the warm air.

At this time, the room temperature is detected by the room temperature thermistor P15, and the control device (not shown) controls the driving of the fuel pumping electron pump P5 based on the temperature difference between the room temperature and the set temperature, so that the liquid fuel P4 The amount of power supplied to the vaporizer P7 is adjusted to adjust the fire power of the fuel flame at the burner P8.

Therefore, for example, when the operation of the petroleum fan heater is started when the room temperature is low, the supply amount of the liquid fuel P4 is increased by the vaporizer P7, and the room temperature is rapidly raised to the set temperature, after which the liquid fuel P4 Adjust the supply amount of to maintain a constant near the set temperature.

In addition, the fuel supply of the oil supply tank P2 removes the oil supply cap P16 which removes the oil supply tank P2 from the main body Pl, reverses an up-down direction, and removes the oil supply cap P16 which has the valve part of the oil supply tank P2, and stops a metal plug. Fuel is injected through P17 (FIG. 86). After confirming that the fuel has been supplied to the oil supply tank P2, tighten the oil supply cap P16 to the threaded portion of the metal plug Pl7, turn the oil supply cap Pl6 upside down, and insert the fuel cap Pl6 into the main body P1, and insert the fuel tank. It attaches to the upper surface of P3, and inserts the oil supply cap part P16 into the socket P18, and mounts on the fuel tank P3.

However, in the conventional petroleum fan heater, the fuel tank needs to be taken out of the main body for refueling the fuel tank, and the fuel tank needs to be turned upside down so that the fuel cap is turned upward. Handling is cumbersome because it is necessary to reverse the up and down direction of the oil supply tank.

In addition, the fastening of the oil supply cap is fastened by a metal stopper and a screw, and when the oil supply tank is turned upside down due to insufficient fastening of the oil supply cap, the oil supply cap is peeled off and fuel is leaked. In particular, in the elderly society, the grip force is weakened, and the force to tighten the screw is weakened, the improvement is desired.

In addition, when supplying fuel to the fuel tank, the oil surface rises up to the valve portion of the oil inlet cap, and supplies the fuel in the oil supply tank while maintaining the oil surface determined by air replacement, so that the valve portion of the oil supply cap is always fueled. When the fuel cap was removed when refueling the fuel tank in the wet state, the fuel was stained with the hand and slipped when the screw was tightened. At the same time, there was a problem that the hand smelled or became dirty.

In addition, when the oil supply tank is refueled in a state stored in the oil fan heater body, there is a problem that fuel overflows into the oil fan heater body.

According to the present invention, it is not necessary to turn the oil supply tank upside down during the fuel supply to the oil supply tank, fuel can be supplied so that the fuel does not get dirty in the hand, and the oil supply tank is housed in the oil fan heater body. It is an object of the present invention to provide a liquid fuel combustion device having a fuel supply tank in which fuel supply to the fuel supply tank is impossible in one state.

In the liquid fuel combustion device in which the oil supply tank provided with the oil supply port and its closing means in the upper part is separably accommodated in the tank storage chamber of the apparatus main body, the supply which prevents the release of the blocking means in the body mounting state of the oil supply tank is carried out. Equipped with the means for preventing the freeing of the mouth, it is necessary to remove the fuel tank from the main body so that the fuel can be supplied.

In this case, as an oil supply system, an indirect oil supply method or fuel supply in which a fuel tank is provided below the oil supply tank and fuel is supplied to the combustion unit through the fuel tank, as long as the oil supply port of the oil supply tank is disposed above the main body mounted state. Although it can be applied to any of the direct refueling method of supplying fuel to the direct combustion unit in the tank, it is preferable to adopt to the direct combustion method.

Various aspects can be adopted as a means of preventing the liberation of oil tanks. As a 1st blocking means, the structure of which a part of the upper surface and the side surface of the oil supply tank is made into the inclined surface, the oil supply port is arrange | positioned on this inclined surface, and the release | release of the obstruction means is prevented by the inclined surface and the wall surface of the tank storage chamber in the main body mounting state, That is, the structure which makes the space between the inclined surface and the wall surface of a tank storage chamber the magnitude | size so that a blocking means cannot be released from an oil supply port can be illustrated.

This inclined surface may be not only an inclined surface formed over the upper surface of the oil supply tank and a part of one side surface, but also an inclined surface formed at a predetermined angle between the upper surface of the oil supply tank and two side surfaces adjacent to the upper surface.

As a 2nd oil supply opening release prevention means, the oil supply opening is arrange | positioned above the side surface of a tank, and the structure which prevents the release of a closure means by the tank side and the wall surface of the tank storage chamber in the main body mounting state of the oil supply tank, ie, the tank side, A configuration in which the space between the wall surfaces of the tank storage chamber is sized to prevent the closing means from being released from the oil inlet can be exemplified.

As a 3rd oil supply opening release prevention means, the structure which arrange | positions an oil supply opening on a tank upper surface, and provides the regulation member which regulates the release of a closure means in the main body mounting state of a tank can be illustrated.

Although this restriction member may be provided in any one of the tank side or the wall surface of a tank storage chamber, the structure which cannot be released by manual in the main body mounting state of an oil supply tank is preferable. For example, the aspect which detects attachment of the main body of a oil supply tank, and restrict | limits a blocking member by a solenoid etc. is mentioned. Moreover, in the case of the system by which the blocking means rotates with respect to the oil inlet, the rotation support point of the blocking means is arrange | positioned at the wall surface side of a tank storage chamber, and the restricting member is arrange | positioned at the outer end side, and the wall surface of a tank storage chamber is arranged. The step may be formed so as to retreat laterally to face the regulating member, and the regulating member may come in contact with the step to prevent opening when the closing means is attempted to rotate open in the main body mounted state.

Moreover, as a blocking means, it is provided in the structure which used the cap which screwed together with the metal stopper of an oil supply port, the fixed plate integrated with the oil supply port as mentioned above, the movable plate freely supported by the rotation plate to this fixed plate, and this movable plate, The structure provided with the cover member with a packing which closes an oil supply port, and the locking means which supports a movable plate in an oil supply port closed position can be illustrated.

The locking means is arranged on the open end side opposite to the pivot support point of the movable plate, and is provided with a locking lever with a locking portion freely supported on one side of the movable plate and the fixed plate, and engaged with the locking portion to support the movable plate in a closed position. The configuration can be exemplified by a latch receiving portion provided on the other side of the movable plate and the fixed plate, and a lever spring that elastically supports the locking lever in a direction in which the locking portion engages the locking portion.

As an oil supply opening release prevention means when this locking means is arrange | positioned at the wall surface side of a tank storage chamber, a part of a locking lever is extended, and this contact part and the tank storage chamber wall surface contact with the main body mounting state of the oil supply tank. The structure which prevents rotation release of a latching lever can be illustrated.

The oil supply port release preventing means may be configured individually or in combination of a plurality. For example, the release of the blocking means can be reliably prevented by organically combining the configuration of the inclined surface which is the first blocking means and the configuration of the speech portion or the regulating member in the rotational blocking means provided with the locking means.

The oil supply tank of the said structure can also add the structure which detects that it was attached to the apparatus main body, and can confirm that.

Moreover, the structure which detects the liquid level of fuel by providing the means which detects the liquid level of the fuel in a tank below the oil supply tank can also be added. In this case, the liquid level detecting means has a structure in which a water discharge hole is formed in the bottom surface of the oil supply tank, and is arranged in a cover member which opens and closes the water discharge hole, or in the lower part of the suction pipe for pumping fuel of the oil supply tank. Any arrangement to arrange may be adopted.

In order to achieve the above object, a liquid fuel combustion apparatus according to the present invention includes a refueling tank having a separation freely mounted in a main body, a combustion section including a vaporization section for heating and vaporizing fuel and a burner for burning the vaporized fuel; And an oil supply pump for supplying fuel from the oil supply tank to the vaporization unit, and a connecting means for connecting the oil supply tank to the oil supply path leading to the combustion section when the oil supply tank is mounted on the main body, and temporarily collects fuel under the oil supply tank. The fuel tank is abolished so that the fuel of the oil supply tank is directly fed to the combustion section so that the fuel can be supplied even if the fuel supply tank is not turned over.

In the liquid fuel combustion apparatus having the above-described configuration, since the fuel tank for collecting the fuel is abolished and the fuel of the oil supply tank is directly fed to the combustion unit, it is preferable to form an air hole opening in the oil supply tank so as not to be negative pressure. In the open state of the air hole, the fuel may fly out of the tank during transportation at the time of refueling or the fuel may leak out when the oil supply tank is turned over.

Therefore, in the present invention, an air hole blocking means is provided in the air hole opened in the oil supply tank so as not to be under negative pressure to prevent fuel from scattering during transportation of the tank or leaking of fuel during tank inversion.

As a first means of closing the air hole, a communication hole is formed on the inner surface side of the air hole, surrounded by a fuel scattering prevention plate, and communicating with the air hole in the tank at a position deviated from the position just below the air hole on the scattering prevention side. And a configuration that makes it difficult for the fuel in the tank to fly through the air holes during transportation. In this case, if the bottom surface of the shatterproof plate is inclined, and a communication hole is formed at the deepest position of the inclined surface and an air hole is directly above the shallowest position, the positions of both holes are greatly displaced to increase the fuel scattering prevention effect. It is preferable at the point.

Further, as a second means for closing the air hole, a guide guide disposed on the inner surface side of the air hole, a weight embedded in the guide guide so as to be movable up and down, interposed between the weight and the air hole and following the up and down movement of the weight The aspect which comprises the blocking plate which occludes an air hole can also be illustrated. According to this configuration, there is an advantage that the air hole can be reliably closed by the obstruction plate by moving further in the vertical direction when the tank is inverted.

In this case, when the contact side corner portion with the guide of the obstruction plate is referred to as the R surface, the movement is smooth on the R plane of the obstruction plate so that the obstruction plate can be reliably guided. Moreover, if the bottom part of a weight guide guide is made into a taper surface, and adopts the structure which moves up and down by rolling to the additional taper surface, it becomes a compact structure and the impact sound according to the up-down movement of a weight can also be reduced.

The air hole closing means using the weight is a mechanism in which the air hole is opened when the oil supply tank is taken out of the main body (in transport), but as a third air hole closing means, a valve for blocking the air hole and the valve And a tank valve lever which swings upward and downward from the outside of the tank, and a movable rod that moves the tank valve lever in the vertical direction, and presses the movable rod to the body side member when the main body of the oil supply tank is mounted to be moved upward. By swinging the tank valve lever to the valve opening side, and adopting a configuration in which the tank valve lever is swinged in the closed valve direction by self-weight or forced movement by a spring at the time of separation from the main body of the oil supply tank, It can be closed when the oil supply tank is detached from the main body and opened when the main body is mounted.

In this case, if the air hole blocking means side is configured to function faster than the connecting means of the oil supply route when the main body of the oil supply tank is mounted, abnormal pressure in the oil supply tank can be released before the connecting means is connected by the opened air hole. Fuel flows smoothly. In addition, when the oil supply tank is taken out of the main body, since the air hole of the tank is closed, fuel does not leak out even when the tank is inverted.

As a structure which functions the air hole blocking means side earlier than the connection means of a oil supply path, what is necessary is just to set so that a movable rod may contact a main body side member earlier than the connection of a oil supply tank side connection joint part, when the main body of a oil supply tank is mounted. As an example, the movable rod is freely embedded in the vertical hole formed in the oil supply tank side connection joint portion, and the lower end thereof protrudes below the connection joint portion, and the movable rod side is mounted when the main body of the oil supply tank is mounted. The structure which makes a movable rod move up and down faster than the connection of an oil supply path by making it contact a receiving surface of a joint receiving part can be illustrated. In this case, since a part structure (moving rod) of the air hole blocking means is arrange | positioned to the oil supply tank side connection joint part, it becomes a compact structure.

In addition, since the oil supply port of the oil supply tank always faces upward, if the filter for removing the dirt etc. in a fuel is provided in the oil supply port, dirt and dust will not enter inside an oil supply tank when fuel is replenished.

In this case, if the filter is formed in a cylindrical shape and a mesh portion through which fuel passes is provided near the oil supply port, the passage area of the fuel increases, and malfunction of the injection pump can be prevented. In addition, when the protrusion is formed upward in the bottom of the filter, a gap is formed in the tip of the injection pump inserted into the filter and in the bottom of the filter to facilitate the supply of fuel.

In addition, when the hose guide guide of the infusion pump is provided on the inner surface of the cylindrical filter, the hose of the infusion pump becomes difficult to be pulled out of the filter, so that the hose of the infusion pump is pulled out of the oil supply tank at the time of refueling so that fuel is not scattered.

Moreover, the structure which arrange | positions the mesh part which passes water in the upper part, and the mesh part which does not let water pass in the lower part in the mesh part of the filter side surface, The side part part, and the mesh part which did not let water pass through the mesh part which let water pass through By adopting the arrangement arranged in the above, when the fuel is supplied to the oil supply tank, the mixing of water does not directly enter the tank, but the post-treatment of the water can be simplified in the filter.

Moreover, in the liquid fuel combustion device, a configuration in which an oil return path for returning fuel from the combustion section back to the oil supply tank is set, and an oil return side connecting means for connecting the oil supply tank to the oil return path is also adopted. In such a liquid fuel combustion device, a part of the pipe connecting the combustion section and the oil return side connecting means is arranged to be elongated in the substantially horizontal direction, and the approximately horizontal section functions as a retention section for temporarily retaining fuel. It is done.

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention eliminates a fuel tank that temporarily collects fuel, and allows the fuel in the oil supply tank to be directly fed to the combustion unit so that the oil supply cap of the oil supply tank is not wetted by the fuel and at the same time the fuel tank. In addition, the oil tanks were to be equipped with various functions required for the abolition.

That is, in order to quickly detect the shortage of fuel in the oil supply tank, a fuel amount detecting means for detecting the amount of fuel in the oil supply tank is provided, or a water detection means for detecting water generated in the oil supply tank is provided to provide water. A configuration is adopted in which the problem caused by the supply to the combustion section is eliminated or a tank mounting detecting means for detecting the presence or absence of the main body mounting state of the oil supply tank is installed so that the operation can be started only when the tank is mounted.

In this case, the fuel amount detecting means, the water detecting means, and furthermore the tank mounting detecting means may be formed in any part of the tank. However, in consideration of the physical properties and the detecting functionality of the fuel and water, the configuration provided on the bottom side of the tank is preferable.

As fuel amount detection means, the structure provided with the float attached with the magnet arrange | positioned inside a tank, and the reed switch provided in the tank mounting side so that it may turn ON / OFF according to the approach / distance operation | movement of this magnet can be illustrated, for example.

As the water detection means, a conductive drip tray provided on the bottom of the conductive tank to collect condensed water, an electrode in contact with the drip tray, an electrode in contact with the oil supply tank, and an insulator electrically insulating the drip tray and the oil supply tank It can be provided, and the structure which detects water by the difference of the electrical resistance value of the water and fuel which are stored in the drip tray can be illustrated.

In order to accurately perform water detection, the drip tray is preferably formed separately from the tank and mounted in an attachment hole in the bottom of the tank via an electrical insulator. The material is composed of a conductive material, but a stainless steel sheet is preferable in that rust can be prevented.

As an electrical insulator, the elastic nonelectroconductive packing interposed between the circumferential wall of the hole formed in the bottom face of the tank, and the circumference | surroundings of the drip tray can be illustrated. When this packing is subjected to a water repellent treatment, water hardly collects even after draining, thereby preventing malfunction.

The electrode which contacts a drip tray and a tank, respectively, is provided in the tank mounting stand outside a tank, for example, and it is preferable on the electrode arrangement structure that a drip tray and a tank contact each electrode. In this case, the position closest to the drip tray and the tank functions as the tip electrode, and water is detected by the difference in the resistance value of the water or fuel stored in the meantime. Moreover, detection of water can be performed more accurately by apply | coating a non-conductive paint part of a drip tray. In addition, if the guard means for guarding the drip tray is attached to the tank side on which the drip tray is mounted, it is possible to prevent scratches and other marks on the drip tray when the tank is removed from the main body and refueled.

The tank mounting detection means can illustrate the structure which consists of a micro switch provided in the upper surface of a tank mounting stand, the magnet provided in the tank bottom surface, and the reed switch of a tank mounting object, for example.

In the case where the liquid fuel combustion device is controlled by input signals from these fuel amount detection means, water detection means and tank mounting detection means, the control unit controls to stop the operation when the tank mounting detection means is OFF (no tank), or similarly. It is also possible to control to drive the operation mode in which the carburetor burns out when it is ON. In addition, when the tank mounting detection means is in the 0N state and the fuel amount detection means for detecting the fuel amount is in the OFF state (with fuel), it is determined that the operation can be started, and the control can be controlled to start. In addition, when the tank mounting detecting means is in an ON state (tank mounting state) and the fuel amount detecting means for detecting a fuel amount is in an ON state (no fuel), it is possible to control to stop the operation, or in the ON state of the fuel amount detecting means. It is also possible to control to inform the display unit of oil supply.

Furthermore, in order to solve the said subject, the fuel tank which temporarily collects fuel is abolished, and the fuel in a fuel tank is sent directly to a combustion part, so that the fuel cap of a fuel tank does not get wet by fuel, In order to minimize as much as possible the water that may accumulate in the oil supply tank is sent to the combustion side and affect the combustion unit as the fuel tank is abolished, the combustion control circuit receives a signal from the water detection means to perform combustion control.

That is, according to the present invention, a combustion section for burning fuel fed from a fuel supply tank, flame detection means for detecting the state of the flame in the combustion section as the spark current value, and the value detected by the flame detection means is used. A combustion control circuit for controlling the combustion section is provided, and water detection means for detecting water in the oil supply tank is provided, and the combustion control circuit receives the water detection signal from the water detection means as well as the signal from the flame detection means to control the combustion section. It is to prevent the water accumulated in the oil supply tank to be sent to the combustion unit.

As this water detection means, it is preferable to carry out electricity supply between the 1st electrode formed in the oil supply tank, and the 2nd electrode formed outside the oil supply tank, and to detect water using the difference of the electrical resistance value of water and fuel.

The water detection should always be read by the combustion control circuit. When the water detection is performed at all times, the micro current flows between the electrodes as described above to detect the water. Occurs. Therefore, it is preferable to perform water detection at a predetermined time.

In addition, since both the water detecting means and the water detecting means energize the electrode and read the current value, since both detecting means become a common electrode (earth electrode) and may interfere with each other, the accuracy can be achieved by operating both at the same time. High detection may not be possible in some cases. Therefore, if only one of the flame detection means and the water detection means is operated, detection accuracy can be improved. As the priority in this case, detection of the combustion state should be given priority in terms of combustion function. Therefore, it is preferable to give priority to the operation of the flame detection means among the flame detection means and the water detection means and to read the current value.

In addition, in order to prevent tipping of the tank, water detection is preferably performed only when combustion is in a predetermined state. That is, the combustion control circuit prompts the water detection means to energize only when the combustion state is a predetermined state and receives a signal from the water detection means, and at other times, prioritizes the determination of the combustion state by the flame current value from the flame detection means. The configuration is preferred.

Herein, the predetermined state is valid for a predetermined time immediately after the start of operation and a predetermined time period during combustion while the operation is stopped. During operation stop, no flame is detected in the combustion section, and since the predetermined time immediately after the start of operation is a period of preheating the carburetor, no flame is detected in the combustion section. In addition, both detection means can be effectively operated if it is made to perform only in predetermined period (comparative short time) during the period in which combustion is stable during combustion.

In addition, the water detection period may malfunction due to the presence of remaining water immediately after the tank is mounted on the main body after the water is discharged from the tank even during operation stop. In addition, immediately after refueling, the tank outer wall may be condensed by low temperature fuel. Therefore, it is desirable to perform the water detection by avoiding this period. That is, a tank mounting detecting means for detecting the presence or absence of the main body mounting state of the oil supply tank is provided, and the combustion control circuit does not receive the signal from the water detecting means for a predetermined time after receiving the tank mounting signal from the tank mounting detecting means. This can prevent malfunction of water detection.

As a tank mounting detection means, the micro switch provided in the upper surface of the tank mounting stand can be illustrated, In addition, a reed switch etc. may be sufficient.

Moreover, as a process in the combustion control circuit by water detection information, the control which outputs a combustion stop signal to a combustion part, and / or informs a display part is possible. In addition, even if the display detects the water detection, it is possible to control the combustion as it is and to stop the combustion when the flame is lowered to a certain level to prevent malfunction of the water detection.

That is, in the combustion control circuit, when the water detection signal from the water detection means is received during combustion, the flame current value from the flame detection means is read out, and when the flame detection level is larger than the preset flame level, combustion continues as it is and the flame It is also possible to adopt control to stop the combustion only when the detection level is below the set level.

As water detection means, an electrically conductive drip tray provided on the bottom of the conductive oil supply tank for collecting water, a first electrode in contact with the oil supply tank, a second electrode in contact with the drip tray, and a drip tray and the oil supply tank electrically The structure which provided the insulator which insulates, and was able to detect water by the difference of the electrical resistance value of the water and fuel which are stored in the drip tray by energizing between both electrodes can be illustrated.

[First Embodiment]

(Example 1)

Best Mode for Carrying Out the Invention Embodiments of the present invention will be described below with reference to the drawings. 1 is a front schematic view of a petroleum fan heater equipped with a liquid fuel combustion device according to the present invention, and FIG. 2 is a schematic view of a liquid fuel combustion device.

The oil fan heater main body 1 includes a front plate 2 provided with detachable attachment, a ceiling plate 3 formed integrally with the side surface, an operation unit 4 for operating a driving operation, a blower outlet 5 for blowing warm air, and a ceiling. It is comprised by the lid | cover 7 freely opening and closing that the oil supply tank 6 was taken out and put in the upper surface right side of the board | plate 3, and it mounts and is fixed to the base 8 which receives this when liquid fuel leaks in the case of emergency.

Inside the main body 1, as shown in Fig. 1 or 2, the fuel tank 6 temporarily stores the fuel, and the pipes and passages for pumping up the fuel of the oil tank 6 can be opened and closed. Lubrication joint 9 of the connecting means having a built-in valve, tank supply 11 supporting the valve of oil supply joint 9, tank guide 11 equipped with oil supply joint receiving 10, oil supply tank 6 Vaporized fuel vaporized by the vaporizer 12, the electronic pump l3 sending fuel to the vaporizer 12 from the oil supply tank 6, and the fuel vaporized by the vaporizer 12 and the primary combustion air Burner 14, combustion chamber 15 surrounding combustion burner l4, partition plate 16 separating burner 14 or combustion chamber 15, burner box l7 housing burner 14, Cooling to cool the fuel between the heat pipe 18 (FIG. 2), which collects fuel from the vaporizer 12, and between the vaporizer 12 and the heat pipe 18. The air valve 20 which sends the air which cuts off the fuel of the fin 19, the oil supply joint receiving part 10, and the electromagnetic pump 13 is provided.

 As shown in FIG. 3, the oil supply tank 6 is freely received in the tank storage chamber 500 partitioned by the side wall of the main body and the tank guide 1l (FIG. 1). Handle 21 installed on the upper surface of the tank body of the vertical rectangular parallelepiped type, a flow meter 23 disposed on a surface close to the oil supply port to confirm the state of fuel supply, and a handle for taking out fuel of the oil supply tank 6 Refueling joint 9 provided on the upper surface on which 21 is installed, fuel supply port 28 arranged on the inclined surface 501 (FIG. 4B) formed between the upper surface and the side surface of the oil supply tank 6, and this The oil supply cap 22 with a pressure discharge valve which opens and closes the oil supply port 28 is provided.

The oil supply joint 9 is a connecting means for connecting the oil supply path of the main body 1 when the oil supply tank 6 is inserted into the tank accommodating chamber 500 of the main body 1. It consists of the mechanism 24 and the suction pipe 25 which pumps up the fuel in the oil supply tank 6.

In the case of refueling the oil supply tank 6, if the fuel supply tank 6 is removed from the main body 1 and the fuel is not supplied, in the case of refueling, the fuel supply is carried out with the fuel supply tank 6 inserted into the main body 1. Since fuel may overflow at the time and lead to a fire, it has a structure which can supply oil only when the oil supply tank 6 is taken out from the main body 1. As shown in FIG.

The structure of the oil supply tank 6 in this embodiment is the upper surface 26 in which the handle 21 of the oil supply tank 6 is arrange | positioned, and the oil supply tank 6 of FIG. An inclined surface 501 is formed by obliquely connecting any one surface having the side surface 27 on which the flowmeter 23 is installed, and an oil supply port 28 is formed on the inclined surface 50l, and the oil supply port 28 is provided. The surface 501 is formed in a shape that is set at an angle at which the oil supply cap 22 with a pressure valve screwed to the oil supply port 28 can not be opened while the cover 7 of the main body 1 is opened. have. That is, as shown in 4b, the space between the inclined surface 501 and the wall surface of the tank guide 11 of the tank accommodating chamber 500 can release the oil supply cap 22, which is a closing means, from the oil supply port 28. It becomes the size which does not exist, and the head part of the cap 22 abuts against the wall surface of the tank guide 11 at the time of release, and it cannot become open.

The angle at which the oil supply cap 22 with the pressure valve screwed to the oil inlet 28 cannot be opened is the size of the opening surface of the lid 7 and the tank guide ll covering the circumference of the oil supply tank 6. Although it depends on the positional relationship of, the gradient of at least 30 degrees is given downward from the upper surface of the surface in which the handle 21 of the oil supply tank 6 is arrange | positioned.

With the above configuration, since the oil supply cap 22 with a pressure valve screwed to the oil supply port 28 of the oil supply tank 6 cannot be opened while the oil supply tank 6 is inserted into the main body 1. When lubricating, the lubrication tank 6 must be taken out of the main body 1 and lubricated, so there is no fear that fuel will leak into the main body 1 at the time of refueling the lubrication tank.

The valve mechanism 24 of the oil supply joint 9, which is a connecting means of the oil supply passage when the main body of the oil supply tank 6 is attached, is spaced apart from the valve seat around the valve hole formed in the lower side of the valve box as shown in FIG. The valve seat 33 is inserted into a conical closed surface of the inverted conical valve body 33 having a protruding rod 33a protruding downwardly through the valve hole at the lower end of the seat. It is provided with the cylindrical O-ring packing 34 which isolate | separates between and the spring 35 which elastically supports the valve body 33 to a valve closing direction.

The coil-shaped valve body spring 35 is interposed between the valve body 33 and the lid nut 37 fitted into the upper opening of the valve box via the sealing packing 36. The lower valve hole of the valve box protrudes downward, and an O-ring 38 for sealing the oil supply joint receiving 10 is fitted around the protrusion, and the fuel from the vaporizer 12 is liquefied in the outer peripheral part thereof. The inlet of the return passage 40 for returning to the oil supply tank 6 is formed.

A passage 39 for pumping fuel from the oil supply tank 6 is formed upstream of the valve mechanism 24, and along with the suction passage 39, the fuel from the vaporizer 12 is liquefied to supply the fuel tank ( The return passage 40 for returning to 6) is formed. On the surface connecting the oil supply joint 9 to the oil supply tank 6, a mounting insertion hole 41 (FIG. 6) of the suction pipe 25 from the oil supply tank 6 and an insertion hole which is a return port of the return fuel from the vaporizer. A mounting hole 43 for screwing the lower part of the 42 and the oil supply joint 9 to the oil supply tank is formed. The oil supply joint 9 is screwed to the oil supply tank 6 via a rubber packing 447.

A suction pipe 25 for pumping fuel from the oil supply tank 6 is connected to the passage 39 flowing in the upstream side of the valve mechanism 24 of the oil supply joint 9. The suction pipe 25 reaches near the bottom surface on the opposite side to the handle 21 of the oil supply tank 6, and a filter 45 which does not allow water or dirt to pass through is provided at the suction port 444 at the tip. In addition, the suction port 444 may be formed on side surfaces of the suction pipe 25 other than the tip bottom surface.

In addition, as shown in Fig. 6, means for detecting the residual oil of the fuel in the oil supply tank 6 is provided near the inlet 444. This detection means is comprised by the float 46 incorporating the magnet 504 which functions as a to-be-detected part, and the reed switch 448 provided opposite this float 46. As shown in FIG. Float 46 is freely inserted up and down in accordance with the fluctuation of the fuel with respect to the cylindrical inlet body 47 fixed to the lower end of the suction pipe 25 from the outside, the liquid level in the fuel tank 6 constant liquid level In this case, the reed switch 448 built into the suction inlet main body is sensed by the magnet 504 of the float 46, and the operation is transmitted to the operation unit 4 so that a display notification such as fuel shortage can be made. have.

The oil supply cap 22 with a pressure valve, as shown in FIG. 7, has a pressure with the cap 48 fitted to the metal stopper of the oil supply port 28 screwed outward formed on the oil supply tank 6 side. The valve mechanism 49 is provided, and the oil supply port 28 is screwed together via the rubber packing 50. The cap 48 is provided with a pressure relief hole 51 for releasing pressure in the ceiling surface, the side surface is screwed, and the terminal is curled. The rubber packing 50 serves to seal between the oil inlet 28 and the cap 48, and a pressure discharge hole 52 is formed in the center to release the pressure. The pressure valve mechanism 49 includes a valve body 53 disposed in a space between the rubber packing 50 and the ceiling surface of the cap 48, and the valve body 53 of the pressure discharge hole 52. The spring 54 is elastically supported in the valve closing direction. In addition, in order to prevent the oil supply tank from becoming negative pressure, holes 97 and 98 having a diameter of 1.5 mm or less are formed in the ceiling surface of the rubber packing 50 and the cap 48. These holes 97 and 98 may be formed on the upper surface of the oil supply tank.

In the main body mounting state of the oil supply tank 6, there is an oil supply joint receiving base 10 (FIG. 12) below the valve mechanism 24 of the oil supply joint 9. As shown in FIG. 8, the oil supply joint receiving part 10 is comprised from the valve receiving part 55 and the receiving main body 56 which support the valve body 33 of the valve mechanism 24 of the oil supply joint 9. As shown in FIG.

The valve support 55 includes a valve support portion 57 that supports the valve body 33 of the valve mechanism 24 of the oil supply joint 9, and a lattice hole 58 having a lattice passage through which fuel flows. It is. The receiving body 56 is connected to the sealing surface 59 which seals with the valve mechanism 24 of the oil supply joint 9, the accommodating part 60 of the valve receiving, and the lattice hole 58 of the valve receiving 55. A passage 61 connected to the electromagnetic pump 13 and a passage 62 to the T-shaped air valve 20 (FIG. 2) in the middle of the passage are formed. An annular concave groove 63 is formed around the valve support 55, and a passage 64 to the heat pipe 18 is formed in the concave groove 63, and the fuel from the heat pipe 18 is formed. It is a passage back. And the threading process is given to the fitting part of the nut which fixes the oil supply pipe which connects another component to the exit of each channel | path.

The oil supply joint receiving part 10 has an annular groove portion 65 on the outside of the concave groove 63, a cylindrical corrugated packing 60 is attached to the groove portion 65, and the oil supply tank is attached to the main body 1. When (6) is set, the valve mechanism 24 of the oil supply joint 9 is mounted at a predetermined position of the oil supply joint receiver 10, and the O-ring 38 outside the valve mechanism 24 is supplied with the oil supply joint receiver 10. Is sealed at the sealing surface 59 of the valve receiving body 56 of the valve receiving body 56, and the oil supply joint 9 is sealed with the pleated packing 66 of the oil supply joint receiving 10 to be sealed.

As shown in FIG. 2, the air valve 20 is provided in order to cut off the fuel of the oil supply path from the oil supply tank 6 to the electromagnetic pump 13, and the receiving main body 56 of the oil supply joint receiving base 10 is shown. In the middle of the passage 61 to the solenoid pump 13 in the middle of the passage 61 to form the passage guided by the air valve 20 from the passage 62 separated by the T-shape, and the passage 62 is filled with water in the oil supply tank 6. It is arrange | positioned above the liquid level of city. The air valve 20 is in a closed state during operation and is set in an open state during stop. Then, air is supplied to the oil supply path from the oil supply joint receiving part 10 to the electronic pump 13 to serve to block fuel. In addition, the air valve 20 is opened at the time of air cleaning of the vaporizer | carburetor 12, and air is sent to the vaporizer | carburetor 12 by driving the electromagnetic pump 13. As shown in FIG.

As shown in FIG. 9, the vaporizer | carburetor 12 has the vaporization element 67 which heats and vaporizes a fuel, the nozzle 68 which ejects the gaseous fuel by the vaporization element 67, and the hole of the nozzle 68. As shown in FIG. The needle 69 for opening and closing the valve, the solenoid valve 70 using electricity for moving the needle 69, the fuel inlet 71 for supplying fuel to the vaporization element 67, and the inside of the vaporizer 12 when the operation is stopped. The return port 72 which delivers fuel, and the heat recovery part 773 which collect | recovers the heat of combustion of the burner 14 are provided.

The vaporization element 67 is a cylindrical sinter of fine particles of ceramic, and tar generated when the fuel is vaporized is deposited inward from the surface of the vaporization element 67. The fuel inlet 71 of the vaporizer 12 has a double pipe structure in which a stainless steel pipe 73 is provided on the outside and a copper pipe 74 is provided on the inside, and the vapor inlet 12 is reduced by lowering the heat conduction from the vaporizer 12. The temperature rise of the fuel entering) is suppressed. And the diameter of the stainless steel pipe 73 is set larger than the copper pipe 74, and the heat conduction is further reduced by making the front-end | tip of the copper pipe 74 to a position outside from the vaporizer | carburetor 12. Moreover, as shown in FIG.

The solenoid valve 70 is comprised by the electromagnetic coil 75, the movable piece 76, the adsorption piece 77, and the spring for pressure 78, and when the electromagnetic coil 75 is energized or non-energized, the movable piece ( 76 is adsorbed or detached from the suction piece 77, and the needle 69 mounted on the movable piece 76 moves so that the hole portion of the nozzle 68 of the vaporizer 12 is opened or closed.

The burner 14 is comprised from the mixing pipe 79 which mixes the combustion gas vaporized by the vaporizer 12, and primary combustion air, and the flame hole 80 which burns the mixed fuel gas.

The electromagnetic pump 13 is a pump for supplying fuel. The air is prevented from accumulating in the electromagnetic pump by arranging the suction side at the lower side and the discharge side at the upper side.

In the heat pipe 18, as shown in FIG. 10, an inlet 82 of fuel from the vaporizer 12 is formed on the side surface of the container body 81, and the outlet of the fuel is formed on the upper surface of the container body 81. 83 is formed, and the outlet 83 is comprised by inserting the pipe 84 in which the tip was formed with the trumpet-shaped hole 85 to the vicinity of the inner bottom face of the container main body 81. As shown in FIG. Then, when the electromagnetic pump 13 is stopped by room temperature control from the start of operation to the stop, the nozzle 68 of the vaporizer 12 is closed and the fuel in the vaporizer 12 is supplied to the oil supply tank through the heat pipe 18. (6) Go back inside. Since the return portion of the fuel is 0.3 to 0.5 mW / time, and the petroleum fan heater is operated daily, the number of times the electromagnetic pump 13 stops is about 10 times, so that the volume of the container body 81 is approximately. It is set to about 20㏄.

And along the path | route which connects the vaporizer | carburetor 12 and the heat pipe 18, the cooling fin 19 (FIG. 2) which dissipates the heat of the fuel returned from the vaporizer | carburetor 12 is provided. This cooling fin 19 is comprised from the pipe 87 and the thin fin 86 formed in the outer side as shown in FIG.

In addition, as shown in FIG. 2, the oil supply joint receiving part 10, the electromagnetic pump 13, the electromagnetic pump 13, the vaporizer 12, the vaporizer 12, the cooling fin 19, the cooling fin 19, Oil supply pipes 88, 89, 90, 91, 92, which connect the components of the heat pipe 18, the heat pipe 18 and the oil supply joint receiver 10, the air valve 20 and the oil supply joint receiver 10, 93 is molded from a copper tube product. And from the oil supply tank 6 to the electromagnetic pump 13, you may use piping made from resins other than a copper pipe.

3 and 4, the oil supply tank 6 is mounted on the main body 1 on the surface 29 opposite to the surface 26 on which the handle 21 of the oil supply tank 6 is disposed. As a means for detecting, a magnet 30 serving as a detection unit is arranged, while a detection unit of the reed switch 32 is provided in the oil supply tank receiving 31 (FIG. 4) of the main body facing the detection unit of the oil supply tank 6. When the oil supply tank 6 is inserted into the main body 1, the tank detection means consisting of the magnet 30 and the reed switch 32 can detect and start operation.

The operation of the above configuration will be described. Opening the lid 7 of the main body 1 with the empty oil supply tank 6, and pulling out the handle 21 of the oil supply tank 6, and the oil supply cap 22 with a pressure valve in the state which raised the handle 21 to the upper side. Loosen to separate, and refuel the fuel through the oil supply port 28 of the oil supply tank (6).

When oil supply is completed, the cover 7 of the main body 1 is opened, and the oil supply tank 6 which put fuel is set in the tank storage chamber 500. When the oil supply tank 6 is attached to the main body, the reed switch 32 provided in the main body part by the magnet 30 of the tank bottom surface is operated, and it is discriminated that the tank 6 was mounted in the main body.

When the main body of the oil supply tank 6 is mounted, the valve body 33 of the valve mechanism 24 of the oil supply joint 9 presses the valve receiving part 57 of the oil supply joint receiver 10 (Fig. 12). (33) moves upwards and the valve body spring 35, which has been elastically supported, becomes compressed, and a gap is formed between the O-ring packing 34 and the valve seat on the closed surface of the valve body 33. The gap forms a path through which fuel flows to the electron pump 13 side.

When the power supply is turned on by operating an operation switch (not shown) of the petroleum fan heater, the vaporizer 12 is heated by a vaporizer heater (not shown) attached to the vaporizer 12. At this time, when the temperature of the vaporizer 12 is detected by a vaporizer thermistor (not shown), and the vaporizer 12 is heated to a predetermined temperature, the electromagnetic pump 13 is driven to drive the liquid fuel in the oil supply tank 6. It is pumped up through the suction pipe 25 and sent to the carburetor 12 via the oil supply joint 9 and the oil supply joint receiving base 10.

By the heated vaporizer 12, the liquid fuel is gasified and ejected through the flame hole 80 (FIG. 9) of the burner 14, which is ignited in this flame hole 80 and combusted 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 by the operation unit, the controller (not shown) controls the driving of the electronic pump 13 to send the amount of liquid fuel to the vaporizer 12. By changing, the calorific value by combustion is appropriately adjusted.

When combustion starts and a flame electric current more than the preset electric current value is detected by a flame sensor, it energizes a fan motor, a blowing fan rotates, and the air of a room is sucked in. And the rotation speed of a blowing fan is controlled by a control apparatus. The sucked indoor air deprives radiant heat obtained in the combustion chamber 15, and is blown out together with the combustion gas to the outside (indoor) of the main body 1 through the blower outlet 5 as a warm air, thereby raising the room temperature.

Subsequently, when the operation of the main body 1 is stopped, the driving of the electromagnetic pump 13 is stopped, and the energization of the vaporizer heater is stopped. At the same time, the energization of the solenoid valve 70 is also turned off, the movable piece 76 and the suction piece 77 are opened, and the hole of the nozzle 68 is blocked by the needle 69 mounted on the suction piece 77. . The fuel remaining in the vaporizer 12 passes through a gap between the main body of the solenoid valve 70 and the closed surface of the needle 69 and passes through the oil supply pipes 90 and 91 to the heat pipe 18. Are stored in.

The fuel having a high temperature is dissipated by the cooling fins 19 provided in the middle of the oil feed pipe 90 and the oil feed pipe 91 to be cooled and sent to the heat pipe 18. Part of the fuel in the heat pipe 18 is in a gaseous state when it is sent, but as time passes, the temperature decreases to change from gas to liquid.

That is, when the operation is stopped or combustion is turned off by room temperature control, the energization of the solenoid valve 70 is turned off, and the movable piece 76 of the solenoid valve 70 opens than the suction piece 77, and the suction is carried out. When the needle 69 mounted on the piece 77 closes the hole of the nozzle 68 of the vaporizer 12, the fuel remaining in the vaporizer 12 passes through the main body of the solenoid valve 70 and the needle ( It passes through the clearance gap of the closed surface of 69, and is sent to the heat pipe 18 via piping 88 and 89 which are oil supply pipes.

At the time of ignition, although the temperature of the fuel in the vaporizer | carburetor 12 is raised to liquid to gas, and the fuel 68 is closed for 1 to 2 minutes from the nozzle 68 to a jet, the nozzle 68 is closed. When the hole of the block is blocked, the internal pressure of the vaporizer 12 is raised to about 0.2 kg / cm, and the pressure is applied to the inside of the heat pipe 18 via the oil feed pipes 90 and 91.

Then, a pressure is applied to the surface of the liquid fuel in the container 81 of the heat pipe 18 to push down the oil surface to form a trumpet at the bottom of the pipe 84 provided inside the heat pipe 18. The liquid fuel is sent from the hole 85 and is recessed via the passage 64 of the receiving body 56 of the oil supply joint receiving 10 (FIG. 10) via the oil supply pipe 92 (FIG. 2). It is sent to the oil supply tank 6 via the return passage 40 (FIG. 5) of the oil supply joint 9 via 63, and is stored.

When refueling the oil supply tank 6, the fuel supply tank 6 is taken out of the main body 1, and the fuel is supplied from a separate container outside the main body, where the oil supply tank 6 moves the handle 21 upward. The oil supply cap 22 with the pressure valve on the surface with the handle 21 is removed, and the fuel is supplied using the oil supply pump through the oil supply port 28 of the oil supply tank 6.

Thus, when supplying fuel to the oil supply tank 6, the oil supply tank 6 is not inverted up and down, and the fuel supply cap of the oil supply tank 6 can be refueled without being polluted by fuel like conventionally.

In the state where the oil supply tank 6 is set in the main body, the oil supply port 28 is disposed on the inclined surface 501 (FIG. 4B), and even if it tries to open the oil supply cap 22, it contacts the tank guide 11 of the main body and opens the cap. Since it is impossible, oil supply in the main body mounting state of the tank is prevented and safety can be ensured.

(Example 2)

Fig. 13 shows the structure of the oil supply tank of the second embodiment. The oil supply hole 152 is provided in the arbitrary surface of the side surface 151 in which the flowmeter 23 of the oil supply tank 6 is provided, and the oil supply cap 22 with a pressure valve is closed in the state which closed the cover 7. It is a structure that cannot be opened.

With such a structure, since oil supply can be performed only when the oil supply tank is taken out of the main body, fuel overflow when the fuel is supplied into the main body 1 can be prevented.

Moreover, the float switch 154 of the liquid level is provided in the surface 153 on the opposite side to the surface in which the tank handle 21 is provided, as a means of detecting the residual oil in a fuel supply tank. The float switch 154 is attached to a cover 155 for opening and closing a water discharge hole for discharging water accumulated in the oil supply tank 6, and when the fuel in the oil supply tank 6 reaches a constant liquid level, The float switch operates to notify the operation unit of the main body of display of fuel shortage or the like. Other configurations and operations are the same as those of the first embodiment.

(Example 3)

14 and 15 show the structure of the oil supply tank according to the third embodiment. An oil supply port 28 and a handle 21 are provided together on the upper surface of the oil supply tank 6, and the handle 21 is freely supported by the oil supply tank in a rotatable manner, and the oil supply tank 6 is supported by the main body. The bracket 21 is attached to the handle 21 to press the oil supply cap 22 with the pressure valve screwed to the oil supply port 28 after insertion into the oil supply port 28. On the side of the oil receptacle 28 on the wall surface of the tank storage chamber, a stopper for preventing the rotation of the handle 21 and the metal fittings 183 in the state in which the handle after the oil supply tank 6 is inserted into the main body 1 is fallen ( 181 (FIG. 15) and a solenoid 182 made of an electromagnetic coil are provided.

Specifically, when the oil supply tank 6 is inserted into the main body 1 and the handle 21 is turned over to the oil supply port 28 side to close the lid 7, the oil supply tank 6 is placed on the main body 1. The tank detecting means detects that it has been inserted, and the stopper bracket 181, which is energized by the electromagnetic coil and mounted on the solenoid 182, moves to the oil supply tank 6 side to supply the oil supply cap 22 with the pressure valve of the oil supply tank 6. ) Is pressed down from the upper side.

As a result, the oil supply cap 22 with the pressure valve screwed to the oil supply port 28 of the oil supply tank 6 cannot be opened in the state of being inserted into the main body 1, so the oil supply tank must be removed from the main body. Since lubrication can be performed, the fuel overflow at the time of refueling into the main body 1 can be prevented.

And the tank detection means is comprised by the magnet 30 and the reed switch 32 similarly to the said Example 1, When the oil supply tank 6 is inserted into the main body 1, insertion of a fuel supply tank is detected and it starts operation. You can do it.

(Example 4)

Figures 16 to 18 show a fourth embodiment, Figure 16 is a perspective view of the oil supply tank, Figure 17 is a sectional view of the oil supply port in the main body mounting state of the oil supply tank, Figure 18 is a state where the oil supply tank is removed from the main body. It is sectional drawing of the oil supply hole part in this.

As shown, the oil supply tank 6 has an inclined surface 501 of a predetermined angle, which is a gradient of at least 30 degrees from the upper surface of the tank to the lower side, between the upper surface and two side surfaces adjacent to the upper surface, and the inclined surface 501 Is provided with an oil supply port 28 (FIG. 17).

The oil supply port 28 is closed by the rotational lid member. That is, the closing means 600 of the oil inlet port 28 has a hole fitted to the oil inlet port 28, and is fixed to the inclined surface 501 by spot welding to the integrated plate 601, the upper handle of the fixing plate 601 The movable plate 603 whose rotation opening and closing is freely supported by the standing piece 602 from the side, and the packing 604 which is arrange | positioned at the inner surface side of this movable plate 603, and closes the metal stopper 28a of the oil supply hole 28 is A coiled spring interposed between the attached lid member 605, the lid member 605, and the inside of the movable plate 603, and presses the lid member 605 to the oil stop 28 to the metal plug 28a side. A locking means 607 for supporting the member 606 and the movable plate 603 in the oil hole closing position is provided.

The fixed plate 601 extends from the inclined surface 501 to the tank upper surface, and the bearing portion 623 (Fig. 16) which allows the lower leg portion of the handle 21 to be freely rotated freely by the extended mounting portion thereof. Formed. As for the movable plate 603, the handle side becomes the rotation support point 611, and the locking means 607 is arrange | positioned at the open end side, Even if it tries to open the movable plate 603 in a main body mounting state, the open end is a tank guide. The length of the movable plate is set so that it is in contact with (11) and cannot be opened.

The lid member 605 is formed in a deep dish shape, the outer flange 608 of which is not displaceable to the annular stopper member 610 formed on the inner surface of the movable plate 603 and in a direction perpendicular to the plate surface of the movable plate. The movement is free to hang. The packing 604 is an annular member fitted to the outer circumferential surface of the central protrusion of the lid member and is pressed against the upper edge of the metal stopper 28a. The spring member 606 is disposed in the inner space of the movable plate 603 and the lid member 605.

The locking means 607 is arranged on the tank guide 11 side of the tank storage chamber as the open end side opposite to the pivot support point 611 of the movable plate 603, that is, the lower end side of the inclined surface 501, and the movable plate is opened. The locking lever 615 with the pin-shaped locking portion 614 attached to the shaft 613 freely supported around the shaft 613 is engaged with the locking portion 614 to support the movable plate 603 in the closed position. A hook-shaped locking receiver 616 provided on the fixed plate 601 and a lever spring 617 that elastically supports the lever 615 in a direction in which the locking portion 614 is engaged with the locking receiver 616. Doing.

The coil spring 617 is wound on the rotation shaft 618 of the locking lever 615, one end of which is caught by the lancing piece 619 of the locking lever, and the other end of the coil is caught by the stopper member 610 of the movable plate 603. As a spring member of a shape, it is arrange | positioned at the inner surface side of the locking lever 615, and is comprised so that the locking lever 615 may be elastically supported in the outward direction than the movable plate 603. As shown in FIG. The use of the coil-shaped spring member on the pivot support point 611 of the movable plate 603 is such that the movable plate 603 moves upward of the oil supply tank 6 when the latching state of the latching lever 615 is released. This is to prevent jumping and turning, thereby eliminating instability such as getting hurt.

The locking portion 616 has a space allowing the engagement of the locking portion 614 between the sidewall of the metal stopper 28a, and is open to the metal stopper 28a side. 614 is a sun that can be freely hanged and peeled off.

The locking lever 615 is formed in a triangular shape by extending a portion of its outer end side, and the rear surface of the locking lever 615 is opposed to the tank guide 11 in a locking posture of the locking lever 615, and releases the locking lever between them. There is a slight gap that makes it impossible to insert the finger for the. In addition, in the locked state of the locking lever 615, although the state does not protrude outward from the tank side, the extension part 620 and the tank accommodating even when the locking lever 615 is attempted to rotate freely in the main body mounting state of the tank. The wall surface 11 of the seal abuts to prevent rotation release of the locking lever 615.

In the above configuration, when the locking lever 615 is pushed toward the metal stopper side in the locking state of the locking lever 615, the locking portion 613 is peeled off the locking portion 616 to lock the closing means 600 (Fig. 18). Although the main body of the tank 6 is released, the oil supply port is provided on the inclined surface 501 and the extension lever 620 (Fig. 17) is formed on the locking lever 615, so that the locking lever 615 is opened. Since the locking lever 615 is covered by the movable plate 603 even when the rotation is to be released, the locking lever 615 is locked because the back surface of the locking lever 615 faces the wall surface of the tank storage chamber so that the hand cannot be inserted into the gap. The lever 615 cannot be released.

In order to release the locking lever 615, even if the release member is forcibly inserted into the gap between the locking lever 615 and the tank guide 11 to release the locking lever 615, the extension portion of the locking lever 615 is released. 620 and the open end 63a of the movable plate 603 abut against the wall surface (tank guide) 11 of the tank storage chamber, thereby preventing the release of the movable plate 603. Therefore, it is possible to refuel when only the oil supply tank 6 is taken out of the main body, thereby preventing the fuel overflow during the fuel supply into the main body 1.

Since other configurations and operations are the same as those of the first embodiment, description thereof is omitted. In addition, although the said Example showed the example which arrange | positioned the latching lever on the movable board side, the structure which arrange | positioned the latching lever on the fixed board side may be sufficient.

(Example 5)

Fig. 19 is a sectional view of an oil supply port portion showing the fifth embodiment. This embodiment is the same as the fourth embodiment in that the rotational closing means and the locking means 607 are provided on the inclined surface 501, but the open end side is disposed on the tank center side, and the rotation support point 611 is tank guide. It is different from Example 4 in that it is arrange | positioned at the (11) side, and the restriction member 625 which prevents the opening of a blocking means in the main body mounting state of a tank is provided outside from the rotation support point 611 of a movable plate.

That is, the outer end portion is bent upward from the rotation support point 611 of the movable plate 603 to become the regulating member 625 facing the tank guide 11, and the locking means is released in the main body mounting state to release the movable plate ( Even if it is going to open-rotate 603, the restricting member 625 abuts against the wall surface of the tank guide 11, and is unable to open.

In the above configuration, the inclined surface 501, the restricting member 625, and the tank guide wall 11 constitute an oil supply port release blocking means in the main body mounted state, and the oil supply tank 6 is removed from the main body to supply oil. Since it is possible to prevent the fuel overflow when the fuel supply into the main body (1).

Since the other structure in a blocking means is the same as that of Example 4, and the other structure is the same as that of Example 1, the description is abbreviate | omitted.

(Example 6)

20 is a sectional view of an oil supply port portion showing the sixth embodiment. This embodiment is an example in which the blocking means 600 is formed on the upper surface of the tank without being formed on the inclined surface. When the blocking means of the rotation system similar to Example 4 is provided in the tank upper surface, it becomes easy to open the blocking means 600 even if it is a main body mounted state.

In this embodiment, in order to prevent the release of this blocking means 600, the pivot support point 611 of the movable plate 603 is arranged on the outer circumferential side of the oil supply tank 6 rather than the open end, so that the movable plate 603 The outer circumferential side is bent downward to form the L-shaped restricting member 625 from the pivot support point, while the upper portion of the tank guide wall 11 is retracted laterally to form a stepped portion 627, and the restricting member in the tank mounting state. The lower end of step 625 and the stepped part 627 are opposed to each other with a contact or a slight gap.

In the above configuration, when the closing means is to be rotated openly, the lower end of the pivot support point 611 side restricting member 625 abuts against the step portion 627 of the tank guide, so that the movable plate 603 can be opened further. It becomes impossible. Therefore, it is possible to refuel when only the oil supply tank 6 is taken out of the main body, and it is possible to prevent the fuel overflow during the refueling into the main body 1.

Since the other structure in a blocking means is the same as that of Example 4, and the other structure is the same as that of Example 1, the description is abbreviate | omitted.

(Other Examples)

In addition, this invention is not limited to the said embodiment, Of course, many corrections and changes can be added within the scope of the present invention. Since the present invention is characterized in that the opening of the oil inlet disposed in the upper portion of the tank is prevented in the main body mounting state, the other configuration, for example, the combustion method, is not limited to the configuration having the vaporizer and the burner portion described in the drawing. Can adopt an appropriate method.

In addition, in the said embodiment, although the connection means of the oil supply tank demonstrated what provided with the oil supply path and the oil return path, the structure provided with only the oil supply path may be sufficient. In addition, although the oil supply path and the oil return path were comprised by one joint in the said embodiment, you may comprise both paths by another joint.

As described above, according to the present invention, since the oil supply port release blocking means for preventing the opening of the closing means for blocking the oil supply port in the main body mounting state of the oil supply tank is provided, the oil supply can only be performed by removing the oil supply tank from the main body. There is no fear of fuel leaking out, which can improve safety.

Further, by providing means for detecting that the oil supply tank is attached to the main body, the mounting of the oil supply tank can be confirmed, and it is possible to prevent the operation from starting when the oil supply tank is not attached to the main body. Then, by providing a means for detecting the liquid level of the fuel in the oil supply tank, it is possible to perform notification and display of oil supply.

Second Embodiment

[Configuration of the body]

21 is a front conceptual view of a petroleum fan heater equipped with a liquid fuel combustion device according to a second embodiment of the present invention, and FIG. 22 is a schematic view of a liquid fuel combustion device.

As shown, the petroleum fan heater main body 1 is formed in a box shape, the front plate 2 installed detachably and freely, the ceiling plate 3 formed integrally with the side surface, the operation unit 4 for operating a driving operation, The blower outlet 5 which blows off warm air, and the lid 7 which open and close the oil supply tank 6 in the upper surface right side of the ceiling board 3 are removed, and this main body leaks liquid fuel in case of emergency. When it came out, it is mounted and fixed to the base 8 which receives this.

The inside of the main body 1 has a tank accommodating chamber 1a, a vaporizer A12, and an electromagnetic pump, which accommodate the oil supply tank 6 by the tank guide 11 and the partition plate 16 as shown in Figs. It is partitioned into the functional part accommodating chamber 1b which accommodates (13) etc., and the combustion part chamber 1c in which the burner 14 and the combustion chamber 15 were arrange | positioned.

In the tank storage chamber 1a, a cartridge type oil supply tank 6 for freely storing fuel is freely provided, and an oil supply path 300 for supplying fuel from the oil supply tank 6 to the vaporizer side and a fuel supply tank 6 are provided. Oil for detachably connecting the oil return path 301 and the oil supply tank 6 which return fuel to the oil supply tank 6 from the oil supply side connection means A9 and A10 and the vaporizer | carburetor A12 side which attach and detach freely. Return side connection means A21 and A22 (Fig. 24) are arranged. At the bottom of the tank accommodating chamber 1a, a cushioning mounting table 1d for absorbing and mitigating the shock applied to the connecting means A9, A10 and A21, 22 is provided. In the tank housing chamber 1a, a guide portion is formed so that the oil supply side connecting means A9 and A10 and the oil return side connecting means A21 and A22 are fitted and connected securely when the oil supply tank 6 is accommodated. desirable.

The oil supply side connection means is comprised with the oil supply joint A9 which built the valve which opens and closes a suction pipe, and a passage, and the oil supply joint receiving part A10 which supports the valve of this oil supply joint A9. An air valve 20 for supplying air to the oil supply path is connected to the oil supply joint receiving A10 in order to block the oil supply path 300 supplied from the oil supply tank 6 to the electromagnetic pump (oil supply pump) 13. This oil-feed joint receiving base A10 is attached to the wall surface of the tank guide 11 which the upper part protruded toward the functional part storage chamber side (FIG. 21).

The functional part accommodating chamber 1b is arranged between the tank accommodating chamber 1a and the combustion chamber part 1c, and is a vaporizer | carburetor A12 which vaporizes the fuel from the oil supply tank 6, and a vaporizer in the oil supply tank 6; Electronic pump 13 which sends fuel to A12, the storage container 18 (FIG. 22) which collects the fuel from vaporizer A12, and the cooling which cools fuel between vaporizer A12 and the storage container 18. As shown in FIG. The pin 19 is accommodated.

The combustion chamber part 1c is divided by the partition board 16, the burner 14 which mixes and combusts the fuel vaporized by the vaporizer A12, and primary combustion air, and the combustion chamber surrounding the burner 14 which burns ( 15 and a burner box 17 containing the burner 14 is housed. The combustion part which burns fuel by the said vaporizer | carburetor A12, the burner 14, etc. is comprised.

The oil supply path 300 (FIG. 22) shows the piping 203 which connects the oil supply joint receiving part A10 and the electromagnetic pump 13, and the piping 204 which connects the electromagnetic pump 13 and the vaporizer A12. Equipped. In addition, the oil return path 301 includes a pipe 205 connecting the vaporizer A12 and the cooling fin 19, a pipe 206 connecting the cooling fin 19 and the storage vessel 18, and a storage vessel ( 18) and a pipe 207 for connecting the oil return joint holder A10. These pipes 203 to 207 are all molded from copper pipes. The piping from the oil supply tank 6 to the solenoid valve 13 may be a pipe made of a resin other than a copper pipe.

[Configuration of Refueling Tank]

Fig. 23 is a schematic diagram of the oil supply tank, Fig. 24 is a perspective view showing the connection portion of the oil supply tank, Fig. 25 is a sectional view showing a connection state between the oil supply joint and the suction pipe in the oil supply tank, and Fig. 26 is a structural diagram of the oil return joint.

As shown, the oil supply tank 6 is formed in a vertical box shape by a conductive metal material (for example, a galvanized steel sheet), and has a handle A23 provided on the upper surface of the tank for transporting fuel, Opening / closing the inclined surface 501 formed between the upper surface on which the handle A23 is provided and one side surface adjacent thereto, the fuel supply oil inlet A26 disposed on the inclined surface 501, and the oil inlet A26 are opened and closed. In the upper surface which is provided with the oil supply cap 600 which rotates and closes freely, this side which is close to this oil supply port A26, and is provided with the flowmeter A25 and the handle A23 which make it possible to see the state in which fuel was supplied. The oil supply joint A9 and the oil return joint A21 arrange | positioned on the opposite side to the oil supply opening A26 are provided.

As shown in FIG. 25, the oil feed joint A9 is provided with a horizontal L-shaped connecting pipe A43 protruding toward the tank side from the upper surface of the oil supply tank 6, and is provided at the distal end of the connecting pipe A43. The joint main body 9a incorporating the valve mechanism A28 is provided.

The joint main body 9a is formed in a vertical cylindrical shape, and a cylindrical diameter small projection barrel 9b fitted to the oil-feeding joint receiving base A10 (Fig. 24) is formed on the lower surface thereof, and is connected and sealed on its outer peripheral part. O-ring A41 is inserted from outside and is in close contact. In addition, an opening and closing lid nut A38 for inserting the valve mechanism A28 is screwed into the upper end opening of the joint body 9a.

The valve mechanism 28 in the joint body 9a is spaced apart from the central valve hole 9c of the protruding cylinder 9b of which the diameter of the joint body 9a is small, and the reverse conical valve seat 9d formed in the lower part of the joint body. And a valve A30 having a freely seated spindle shape, a spring A35 for elastically supporting the valve body A31 interposed between the upper end of the valve body A31 and the cover nut A38 in the valve closing direction, and the valve. A sealing O-ring (A33) is fitted to the valve seat side circumferential surface of the sieve (A31), and the lower end of the valve body (A31) protrudes downward from the small-diameter projection tube (9b) in the valve closed state. It is in a state.

The connection pipe A43 has a suction passage 43a communicating therewith with the valve chamber in the joint body 9a, and an end portion projecting toward the tank side is integrally connected to the side of the joint body 9a. It is. The lower end of the connecting pipe A43 communicates with the inside of the tank from the insertion hole A46 on the upper surface of the oil supply tank 6, and the flange 43b formed at the lower portion of the upper surface of the oil supply tank 6 through the rubber packing A50. It is fixed to A47 by a screw. A male screw is formed on the outer circumferential surface of the lower end portion of the connecting pipe A43, and an upper end of the suction pipe A27 in the oil supply tank is screwed to this male screw.

The suction pipe A27 reaches near the bottom face of the oil supply tank 6 and is provided with a filter A45 which does not allow water or dust to pass through the suction port A44 formed on the lower end side thereof. The suction port A44 may be provided at the bottom bottom of the suction pipe A27.

As shown in Fig. 26, the oil return joint A21 is installed side by side on the upper surface of the oil supply tank 6 together with the oil supply joint A9, and the inlet pipe A27 is not connected, and the oil supply tank 6 Except for installing the pressure valve mechanism 700 of), it is basically the same structure as the oil supply joint A9. Therefore, a structure other than the above difference will be briefly described.

As shown in Fig. 26, the oil return joint A21 is provided with a horizontal L-shaped connecting pipe A30 protruding toward the tank side from the upper surface of the oil supply tank 6, and is provided at the distal end of the connecting pipe A30. The joint main body 21a incorporating the valve mechanism A29 of the system is provided.

The joint main body 21a is formed in the shape of a vertical cylindrical shape, and on the lower surface thereof, a cylindrical small diameter protrusion cylinder 21b fitted to the oil return joint receiving A22 (Fig. 29) side is formed, and the outer peripheral portion thereof is formed. The O-ring A42 for connection sealing is stuck in the outside and is in close contact. Further, an openable lid nut A40 for inserting the valve mechanism A29 and the pressure valve mechanism 700 is screwed into the upper opening of the joint body 21a.

The valve mechanism A29 in the joint body 21a is spaced apart from the central valve hole 21c of the projection cylinder 21b of which the diameter of the joint body 21a is small, and the reverse conical valve seat 21d formed in the lower part of the joint body. For sealing mounted on a valve seat A32 having a freely seated spindle, a spring A36 elastically supporting the valve body A32 in the valve closing direction, and a valve seat side peripheral surface of the valve body A32; O-ring A34 is provided.

The valve body A32 is in a state in which the lower end protrudes downward from the small diameter projecting cylinder 21b in a valve closed state, and the spherical valve 703 of the pressure valve mechanism 700 can be pressurized to the upper end side. The push bar 709 is integrally formed. The spring A36 is interposed between the upper surface of the valve body A32 and the lower surface of the valve seat body 702 of the pressure valve mechanism 700 described later.

The return pipe 30a which connects to the valve chamber in the joint main body 21a is formed in the connection pipe A30, and the edge part which protruded to the tank side side is integrally connected to the side part of the joint main body 21a. It is. The lower end of the connecting pipe A30 communicates with the inside of the tank from the insertion hole A48 of the upper surface of the oil supply tank 6, and the flange 30b formed at the lower portion of the upper portion of the upper surface of the oil supply tank 6 is provided through the rubber packing A51. It is fixed to A49 by a screw.

In the present embodiment, the pressure valve mechanism 700 is used to prevent the air pressure in the tank from rising due to the temperature difference between the oil supply tank 6 and the liquid level in the tank to rise so that fuel leaks out and the tank becomes negative. Is installed in the oil return joint (A21).

The pressure valve mechanism 700 has a valve seat 702 in which a cylindrical valve hole 701 disposed above the valve body A32 is formed, and a valve hole 701 located above the valve seat 702. Position the spherical valve 703 which is free from seating and closing with respect to a closed surface in a valve chamber, the spring 704 which elastically supports this spherical valve 703 to a seating side, and the said valve body 702 in a joint main body 21a. The cover nut A40 to determine is provided.

An air hole 705 is formed at the center of the cover nut A40, and the spring 704 is interposed between the spherical valve 703 and the cover nut A40. The valve hole 701 is set to a diameter through which the push bar 709 of the valve body A32 can penetrate, and the oil return joint A21 fits and connects with the oil return joint receiving base A22, thereby providing a valve body A32. Is pushed upward, the push bar 709 penetrates the valve hole 701 and pushes the spherical valve 703 upward to open the valve hole 701, and the inside of the tank through the connection pipe A30. The air hole 705 of the cover nut A40 is made to penetrate (FIG. 24).

The oil supply joint A9 and the oil return joint A21 are both the oil supply joint receiving valve bodies A31 and A32 of the joint main body set downward and arranged at the same level, and upwardly arranged opposite thereto. A10) and oil return joint receiving part A22 are fitted and connected in an up-down direction. Therefore, both connecting means A9, A10, A21, and A22 can be connected smoothly only by mounting the oil supply tank 6 through the upper side of the tank chamber 1a.

Fig. 27 is a structural diagram of oil feed side connecting means A9 and A10, Fig. 28 is a structural diagram of oil feed joint receiving portion, and Fig. 29 is a structural diagram of oil return side connecting means. As shown, the tank housing chamber 1a (FIG. 21) has an oil supply joint receiving base A10 and oil facing the oil supply joint A9 and the lower side of the return joint A21 in the tank receiving state of the oil supply tank 6. Return joint receiving part A22 is arrange | positioned.

As shown in FIG. 28, the oil supply joint receiving part A10 opens to the upper surface of the cylindrical receiving main body 10a, and can penetrate the protrusion cylinder 9b (FIG. 26) with a small diameter of the lower end of the oil supply joint A9. By a pressure contact and separation between the concave receiving portion A61 having a circular cross section and the valve body A31 of the valve mechanism A28 (Fig. 27) of the oil feed joint A9. A valve mechanism A60 for opening and closing is provided.

At the upper end of the concave receiving portion A61, an annular sealing surface A67 that is close to the circumference of the projection 9b with a small diameter of the oil feed joint A9 is formed. In addition, the valve receiving part A68 (FIG. 27) is recessed in the bottom face of the receiving part A61, and the valve receiving part A65 is fitted to this valve receiving part A68. In the valve support A65, a valve hole 60b communicating with the valve chamber 60a formed in the lower part of the support body 10a is formed, and a lattice-shaped passage A66 through which fuel flows is formed. .

The valve mechanism A60 is a valve body A62 which is freely spaced and seated on the valve seat of the valve chamber 60a and whose upper end protrudes toward the receiving part A61 side through the valve hole 60b, and this valve body ( Interposed between the head of the valve A62 and the valve support A65, the spring A63 elastically supports the valve body A62 in the valve closing direction, and is fitted to the valve chamber 60a side of the valve body A62 from the outside. It consists of an O-ring A64 which is in close contact and seals the valve seat. The valve mechanism A60 opens the valve by pressurizing the head of the receiving valve body A62 to the valve body A31 of the oil feed joint A9, and closes the valve by separating it from the head of the valve body A62. have.

In addition, a passage A69 is formed in the lower portion of the valve chamber 60a of the receiving main body 10a to communicate with a pipe 203 for connecting to the electromagnetic pump 13 (Fig. 22). A passage A70 (FIG. 28) of the air valve 20 communicates with the side portion. The passage A70 is formed above the liquid level in the full water level of the fuel in the oil supply tank.

The air valve 20 is installed in order to insert the air which cuts off the fuel of the oil supply path 300 from the oil supply tank 6 to the electromagnetic pump 13 to the oil supply path 300, and to the air introduction passage of the valve body. A valve 20a disposed, an electromagnetic coil 20b disposed in the outer circumference of the valve body and moving the toilet 20a in the valve closing direction of the passage A70 by the excitation of the valve, and the valve 20a A spring 20c that elastically supports in the opening direction is provided.

The operation of the air valve 20 is in the closed state of the air valve 20 during operation, and in the open state during the stop, and serves to insert air to cut off the fuel in the oil supply path 300. The air valve 20 also sucks air in the open state during the cleaning of the vaporizer A12 (Fig. 22), drives the electromagnetic pump 13, and also sends air to the vaporizer A12.

On the other hand, the oil return joint receiving part A22 is basically the same structure as the oil supply joint receiving part A10 except that the said air valve 20 does not exist. Therefore, if the structure is briefly explained, the oil return joint receiving part A22 is arrange | positioned in the receiving part A72 and the receiving part A72 formed in the upper surface of the receiving main body 22a as shown in FIG. And a valve mechanism A71 that opens and closes by press-contacting and separating the valve body A32 of the valve mechanism A29 of the oil return joint A21.

An annular seal surface A78 is formed at the upper end of the receiving portion A72, and the valve receiving portion A76 is fitted to the valve receiving portion A79 which is concave at the bottom of the receiving portion A72. The valve holder A76 has a valve hole 71b communicating with the lower valve chamber 71a of the receiver main body 22a, and has a grid-shaped passage A77 through which fuel flows.

The valve mechanism is a valve body A73 which is freely spaced and seated on the valve seat of the valve chamber 71a and whose upper end passes through the valve hole 71b and protrudes toward the receiving part A61 side. For sealing sealing interposed between the head and the valve support A72, the spring A74 elastically supporting the valve body A73 in the valve closing direction, and being fitted in close contact with the valve chamber 71a side of the valve body A73. The valve body A32 is composed of an O-ring A64, and the valve body A32 of the oil return joint A21 presses the head of the receiving valve body A73 to open the valve, and separates the valve from the head of the valve body A73. It is supposed to close. In the lower part of the valve chamber 71a of the receiving main body 22a, a passage A80 (Fig. 29) is formed in communication with the pipe 207 to be connected to the storage container 18 (Fig. 22).

In the configuration of the oil supply tank 6 and the connecting means A9, A10 and A21, A22, when the oil supply tank 6 is set in the tank storage chamber 1a of the main body 1 from the upper side, the oil supply of the connecting means The joint A9 and the oil return joint A21 are mounted at predetermined positions of the oil feed joint receiver A10 and the oil return joint receiver A22, and each of the joint bodies 9a and 21a has a small diameter projecting tube 9b, O-rings A41 and A42 on the outside of 21b) are sealed at the sealing surface A67 of the oil feed joint receiving table A10 and the sealing surface A78 of the oil return joint receiving table A22 to be in a sealed state. At the same time, the valve mechanisms A28 and A29 of each joint and the valve bodies of the receiving valve mechanisms A60 and A71 are pressurized with each other to bring the valve into an open state.

On the oil return joint A21 (Fig. 26) side, the valve body A32 moves upward by opening of the valve body A32, and the upper push bar 709 moves the valve of the pressure valve mechanism 700. The valve hole 701 opens because it moves upward from the hole 701 and pushes the spherical valve 702 upward. Therefore, a communication path is formed in the tank through the valve hole 701 and the air hole 705 in the joint main body 21a through the connecting pipe A30, and the tank internal pressure is made equal to the tank external pressure to thereby maintain the temperature in the tank. The rise prevents fuel from leaking out and negative pressure in the tank.

Fig. 30 is a side view of the oil supply tank, Fig. 31 is a sectional view showing the structure of the tank bottom, Fig. 12 is a sectional view of the inside of the tank, and Fig. 33 is a perspective view of the mounting hole of the drip tray at the bottom of the tank. As shown, the oil supply tank 6 of this embodiment has the fuel amount detection means 750 (FIG. 32) which detects the quantity of the fuel of the oil supply tank in the tank bottom part, and the water detection means which detects the water accumulated in the oil supply tank. 800 and tank mounting detection means 900 (FIG. 31) which detect the presence or absence of the main body mounting state of the oil supply tank are provided.

The tank mounting base 1d (FIG. 32) has a leg portion 755 mounted on the pedestal 8 at the outer circumferential portion, the center portion protrudes downward, and the receiving recess of the drip tray 801 concave downward on the upper surface side thereof. A portion 754 is formed, and the outer circumference portion is made of synthetic resin that is a mounting table 757 of the tank bottom surface 6b, and the central convex portion 756 (Fig. 31) is formed in the hole 8a of the pedestal 8; It is fitted and mounted.

The water detection unit 800 contacts the first and second electrodes 803 and 803 which are in contact with the bottom of the refueling tank 6, the conductive drip tray 801 provided at the bottom of the conductive tank to collect condensed water. The second electrode 802 and a watertight packing 804 as an insulator electrically insulating the drip tray 801 and the oil supply tank 6, and the electric resistance values of water and fuel stored in the drip tray 801 The water is to be detected by the difference of. The first electrode 803 serves as an electrode provided in the oil supply tank, and the second electrode 802 functions as an electrode provided outside the oil supply tank, and flows a minute current between these electrodes to reduce the electrical resistance of water and fuel. The difference is used to detect the presence of water in the tank.

The drip tray 801 is formed separately from the tank 6 by using a stainless steel sheet to prevent the occurrence of rust, the upper surface side is concave in the shape of a plate, the peripheral edge extending radially outward in the outer peripheral portion A flange 807 is formed, and this flange 807 is attached to the bottom mounting hole 805 of the oil supply tank 6 via the rubber packing 804.

The packing 804 is an elastic non-conductive material interposed between the circumferential wall of the bottom mounting hole 805 of the oil supply tank 6 and the peripheral flange 807 of the drip tray 801, and the drip tray 801 Flange 807 is fitted in the vertical direction. The packing 804 is fixed around the tank mounting hole 805 by a ring-shaped pressing member 809 and a screw 810 disposed on the bottom thereof, whereby the drip tray 801 is mounted to the mounting hole 805. It is fixed in watertight state.

The rubber packing 804 is composed of a rubber member having non-conductive oil resistance and water repellency. Specifically, NBR (nitrile butadiene rubber) having excellent oil resistance, fluorine rubber having excellent water repellency, and the like are used. In particular, when the packing lacks water repellency, water accumulates and water remains in the metal parts of the packing and the oil supply tank 6 even after draining, which causes malfunction. In this embodiment, a rubber material having water repellency is present. Because of using, high precision and accurate water detection is possible.

The drip tray 801 side electrode 802 and the tank side electrode 803 are both attached to the tank mounting stand 1d outside the oil supply tank. The electrode 802 of the drip tray 801 protrudes to the tank side from the bottom wall of the drip tray accommodating recess, and is a needle-shaped electrode which contacts the outer surface of the drip tray 801 in a tank mounting state. The tank side electrode 803 is a needle-shaped electrode which is exposed to the outer circumferential mounting table 757 of the mounting table 1d and contacts the bottom face 6b of the tank in the tank mounting state. By connecting both electrodes to a power source, an electrical closed circuit from the power source to the drip tray electrode 802, the drip tray 801, the fuel or water on its inner surface, the tank bottom 6b, the tank side electrode 803, and the power supply The presence of water can be detected by the difference of the electrical resistance value of the liquid (fuel and water) inside the drip tray 801.

In order to improve this water detection accuracy, the hole wall of the tank side mounting hole 805 which mounts the drip tray 801 is bent downward, and at several places in the circumferential direction of the bent part 811 (FIG. 33). A needle portion 812 having a narrow width and a sharp tip at an interval is formed to protrude downward, and the needle portion 812 functions as a tank side tip electrode, and the tank side electrode 803 and the tank bottom face are connected to each other. It is conducting. In addition, the inlet port A44 for pumping fuel in the tank is provided above the needle portion 812, and does not directly pump water from the internal drip tray portion of the drip tray 801. In addition, by covering the inner side and the outer side of the bottom of the drip tray 801 with a non-conductive paint or the like, even if water is accumulated in the metal part of the packing 804 and the oil supply tank 6, as a factor of malfunction, It doesn't work.

In addition, the inner surface of the oil supply tank 6 is covered with a non-conductive paint or the like from the inlet port A44 for pumping fuel up to the upper side, thereby preventing damage by water in a manner other than the electric water detection method. can do.

A tank die 901 for guarding the drip tray 801 is welded to the bottom of the conductive drip tray 801 provided on the bottom surface of the oil supply tank 6. The tank die 901 has a shape having a rib or U-shape 902 which is higher than the surface welded to the oil supply tank 6 and higher than the height of the drip tray. Therefore, when the oil supply tank 6 is removed from the main body and the oil supply port is oiled upward, even if there is foreign matter on the bottom surface of the oil supply tank 6 or the surface contacting the drip tray 801 side, the tank bottom surface and the drip tray 801 ) Can be protected from scratches and other marks, and water detection can be prevented from malfunctioning.

Further, the fuel amount detecting means 750 (Fig. 32) for detecting the amount of fuel in the tank includes a float 752 having a magnet 751 disposed inside the tank and functioning as a detection unit, and a magnet 751. A reed switch 753 provided on the tank mounting table 1d side is provided to face the float 752 so as to be turned on and off in accordance with the approach and separation operation.

The float 752 is incorporated in the permeable cylindrical guide 754 with the upper lid in a state in which the magnet is disposed below the upper and lower movable parts in accordance with the liquid level fluctuation of the fuel, and the lower end of the guide 754 is water detection means. It is fixed to the inner surface side of the drip tray 801 of 800. The reed switch 753 is fixed to the lower surface of the center recess of the tank mounting base 1d so as to face the float 752. The guide 754 is for protecting the commercially available oil supply hose from contacting the float 752 when the fuel of the oil supply tank 6 is withdrawn. When the guide 754 is made of metal, burrs are not generated inside. Processing that is not done.

Therefore, when the fuel in the oil supply tank 6 decreases and reaches a constant liquid level, the reed switch 753 is sensed by the magnet of the float 752, and the operation is sent to the control circuit 850 (Fig. 32) side. The display unit 952 can notify the fuel shortage and the like.

In the tank mounting detecting means 900 (Fig. 31), the switch main body 901a is provided on the lower surface of the tank mounting table 1d, and the movable contact 901b is formed in the hole 758 formed in the outer peripheral mounting surface 757. When the tank 6 is mounted on the mounting surface 757, the movable contact 901b is pushed back by being pushed back to the tank and turned ON.

[Configuration of Carburetor and Burner]

34 is a configuration diagram of a carburetor and a burner unit. As shown, the vaporizer | carburetor A12 opens and closes the vaporization element A81 which heats fuel and vaporizes, the nozzle A82 which ejects the fuel vaporized by this vaporization element A81, and the hole of this nozzle A82. Needle A83, a solenoid valve A84 connected to the needle A83 to move the needle A83, a fuel inlet A85 for supplying fuel to the vaporization element A81, and a vaporizer A12 when the operation is stopped. A return circuit A86 for discharging the internal fuel and a heat recovery unit A87 for recovering combustion heat of the burner 14.

The vaporization element A81 is a cylindrical sinter of fine particles of ceramic, and tar generated when the fuel is vaporized is deposited from the surface of the vaporization element A81 toward the inside. The fuel inlet A85 of the vaporizer | carburetor A12 becomes the dual structure of the outer stainless pipe A88 and the inner copper pipe A89. The stainless steel pipe A88 is used to suppress the temperature rise of the fuel entering the vaporizer A12 by lowering the thermal conductivity from the vaporizer A12. In addition, the diameter of the stainless steel pipe A88 is made larger than that of the copper pipe A89 to further suppress heat conduction transferred from the stainless steel pipe A88 to the copper pipe A89. The tip of the copper pipe A89 is located to a position outside of the vaporizer A12.

The solenoid valve A84 is comprised with the electromagnetic coil A90, the movable piece A91, the adsorption piece A92, and the spring for pressure A93, and is movable part A91 by the energization and non-energization to the electromagnetic coil A90. The needle A83 attached to the movable piece A91 is moved to the suction piece A92, and the needle A83 is moved to open and close the hole of the nozzle A82 of the vaporizer A12.

The burner 14 is comprised from the mixing pipe A94 which mixes the combustion gas vaporized by the vaporizer A12, and primary combustion air, and the flame hole A95 which burns the mixed fuel gas. The flame rod 953 as a flame detection means is arrange | positioned above this flame hole A95, and this flame rod 953 and the electroconductive burner 14 become a pair of electrodes, and a micro current flows between both. The state of the flame can be detected by using the flow of the flame current according to the resistance value by the action of ions present in the flame.

[Configuration of Electronic Pump, Storage Vessel, Cooling Fin]

As shown in FIG. 22, the solenoid pump 13 pumps the fuel in the oil supply tank 6 and feeds it to the vaporizer | carburetor A12 side, A fuel discharge amount etc. are controlled by the control circuit 950 (FIG. 37). It is becoming.

35 is a sectional view of the storage container. As shown, the storage container 18 is in the vaporizer | carburetor A12 by the stop of the electromagnetic pump 13 in the room temperature control, and the block | closure of the nozzle A82 of the vaporizer | carburetor A12 during operation from start to stop. When returning the stored fuel to the oil supply tank 6, it is installed in order to collect | restore the return part temporarily and to cool it.

The container main body A96 of the storage container 18 is in a sealed state, and its capacity is set to about 20 kPa. As described above, when the fuel remaining in the vaporizer A12 is returned to the oil supply tank 6, part of the vaporized fuel is liquefied into fuel, and the return portion of this combustion gas is approximately 0.3 to 0.5 mW / time. to be. When the amount of combustion changes by room temperature control during operation of the petroleum fan heater during the day and the number of times that the electromagnetic pump 13 stops is about 10 times, the return amount of fuel per day is about 3 to 5 kW. Therefore, the container main body A96 is a container (about 20 kPa) which can fully collect this return amount.

The inlet A97 of the combustion gas from the vaporizer | carburetor A12 is formed in the side surface of this container main body A96, and the outlet A98 of the fuel accumulated in the container main body A96 is formed in the upper surface of the container main body A96. It is. The outlet A98 of the upper surface of the container is provided with a pipe A99 that reaches near the bottom of the inside of the container body A96, and the lower end thereof is a trumpet-shaped inlet 200, and fuel accumulated in the container generates surface tension. It is easy to inhale without letting.

Fig. 36 is a sectional view of the cooling fin 19 provided in the middle of the path connecting the vaporizer A12 and the storage vessel 18. Figs. As shown, the cooling fin 19 is formed by forming a plurality of thin fins 201 on the outside of the pipe 202, and serves to dissipate heat of fuel returned from the vaporizer A12.

[Configuration of Control Unit]

37 is a configuration diagram of a control circuit for combustion control by signals from the water detection means 800 (FIG. 32), the flame detection means 953 (FIG. 34), and the tank mounting detection means 900 (FIG. 31). . In the combustion control by the flame detection means 953, the main feature of the present invention is the reception period of the water detection, etc., and the fuel amount detection means not directly related to this in Figs. 750 is omitted.

As shown in the drawing, the control circuit 950 is composed of a microcomputer incorporating a CPU, a ROM, and a RAM. The flame detection means 953, the water detection means 800, the tank-mounted detection means 900, and the operation on the input side are provided. A switch 954 is connected, a combustion section (including loads such as a carburetor heater, an electromagnetic pump, a valve drive section, etc.) 955 and a display section 952 are connected to the output side to execute combustion control by various input signals. It is.

The control circuit 950 receives the signal from the water detection means 800 and receives the signals from the water detection determination means 961 and the flame detection means 953 to detect the presence or absence of water, and compares the flame current value with the set flame level. Flame detection determining means 962 for detecting the combustion state, tank mounting determining means 963 for determining whether the tank is mounted by receiving a signal from the tank mounting detecting means 900, and the result of the determination thereof, and The control part 965 which receives the signal from the operation switch 954 and the measurement means 964 of a timer, and outputs a control signal to the combustion part 955 and the display part 952 is provided.

Fig. 38 is an analog electric circuit diagram. As shown in this figure, in the electric circuit, power is supplied from the AC power supply AC through the transformer TR, and after full-wave rectification of the power supply by the diode bridge DB, the 24V is applied by the three-terminal regulator IC2. Get the power source. The 24V power supply is stabilized by the electrolytic capacitor C5 and the film capacitors C3 and C4, and is supplied to the flame rod 953, so that the flame current value can be detected by the control circuits IC1 and 950. The 5V power supply is obtained from the 24V power supply by the three-terminal regulator IC3. The 5V power is stabilized by the electrolytic capacitor C8 and the film capacitors C6 and C7, and is supplied to the power lines of the operation switch 954 and the tank-mounted detection micro switch 900, and the combustion control circuit IC1 950 The ON / OFF can be detected by

In the combustion control circuit 950, the flame detection means 953 takes precedence over the water detection means 800 to operate to read the current value, and the reading operation of the water detection means 800 is limited only to a predetermined state. Doing. That is, the combustion control circuit 950 prompts the electricity supply to the water detection means 800 to receive a signal from the water detection means 800 during the operation stop, the predetermined time immediately after the start of operation or the predetermined period during the combustion. have. In addition, the combustion control circuit 950 prevents the signal from the water detection means 800 from being received for a predetermined time after receiving the tank mounting signal from the tank mounting detection means 900.

Therefore, since the water detection is to be read only for a limited period of time, the contact of the tank can be prevented, and since only one of the flame detection means 953 and the water detection means 800 is operated, the earth power source is common. Even if the detection accuracy can be improved.

In the control unit 965 (Fig. 37), when the water detection signal is received by the water detection determination unit 961, the control unit 965 informs the display unit 952 of the water detection state to prompt the user to drain the water in the tank. The control is performed so that the driving of the electromagnetic pump 13 in the combustion section 955 is stopped at the same time as the water is detected during or immediately after the operation is stopped.

When water is detected during combustion, the water detection unit notifies the display unit 952. Instead of stopping the operation as it is, the flame current value from the flame detection unit 953 is read once, and the flame detection level is set at a preset flame level. When it is larger, combustion is continued as it is, and a signal for stopping the electromagnetic pump 13 of the combustion unit 955 is outputted so as to stop combustion only when the flame detection level is below the set level. Therefore, even if the water detecting means 800 malfunctions during combustion, the operation can be continued as it is, so that efficient combustion control is possible.

[Operation of Oil Fan Heater]

Next, the operation of the petroleum fan heater will be described briefly. Open the empty oil supply tank 6 by opening the cover 7 of the main body 1, take out the handle A23 of the oil supply tank 6, and then open the closing means 600 with the handle A23 upward. To supply fuel through the oil supply port A26.

When lubrication is completed, the fuel supply tank 6 containing fuel is opened and the cover 7 of the main body 1 is set to a predetermined position. Then, as shown in Figs. 27 and 29, the valve body A31 of each of the valve mechanism A28 of the oil supply joint A9 of the oil supply tank 6 and the valve mechanism A29 of the oil return joint A21, A32 presses the valve bodies A62 and A73 of the valve mechanism A60 of the oil feed joint receiver A10 and the valve mechanism A71 of the oil return joint receiver A22 to lower the valve bodies A62 and A73. .

When the heads A62a and A73a of these valve bodies A62 and A73 touch the upper surface portions of the valve holders A61 and A72, the valve mechanism A28 of the oil supply joint A9 and the valve of the oil return joint A21 are provided. The valve bodies A31 and A32 of the mechanism A29 move upward, and the springs A35 and A36 elastically supported in the valve closing direction are in a compressed state, and the closed surface O of the valve bodies A31 and A32 is The rings A33 and A34 have a gap in the closed surface of each of the oil feed joint A9 and the oil return joint A21, and the fuel flow path 300 through which the fuel flows toward the electromagnetic pump 13 (FIG. 22). And the oil return path 301 from the storage container 18 to the oil supply tank 6 is opened.

When the power source is turned on by operating the operation switch 954 (Fig. 37) of the petroleum fan heater, the vaporizer A12 is heated by a vaporizer heater (not shown) attached to the vaporizer A12. At this time, when the temperature of the vaporizer A12 is detected by a vaporizer thermistor (not shown) and the vaporizer A12 is heated up to a predetermined temperature, the electronic pump 13 is driven to suck the liquid fuel in the oil supply tank 6. It is pumped up through (A27) (FIG. 22), and is sent to the vaporizer | carburetor A12 via the oil feed joint A9 and the oil feed joint receiving base A10. By the heated vaporizer A12, the liquid fuel is gasified and ejected through the flame opening A95 of the burner 14, which is ignited by the flame opening A95 and combusts in the combustion chamber 15.

At this time, based on the difference between the room temperature detected by the room temperature sensor 153 (thermistor) and the set temperature set by the room temperature setting switch 157 of the operation unit, the control circuit 950 controls the electronic pump 13. The amount of heat generated by combustion is appropriately adjusted by controlling the driving of the gas and changing the amount of liquid fuel sent to the vaporizer A12.

When combustion starts and the flame sensor 953 detects a flame current equal to or greater than a preset current value, it is energized by the fan motor and the blowing fan rotates to suck in the indoor air. The rotation speed is controlled by the controller 950. The sucked indoor air takes the radiant heat obtained in the combustion chamber 15 and becomes warm air together with the combustion gas and blows it out to the outside (indoor) of the main body 1 through the blower outlet 5 to control the optimum temperature. .

In addition, this invention is not limited to the said Example, Of course, many corrections and changes can be added within the scope of the present invention. For example, although the flame detection and water detection in the oil supply tank which can be taken out were demonstrated in the said embodiment, the combustion control by this flame detection and water detection is applicable also to the oil supply tank fixed to the main body.

As described above, according to the present invention, since the flame state of the combustion unit is detected by the spark current value, the water in the oil supply tank is detected by the difference of the electrical resistance value with the fuel, and the combustion unit is controlled by these detection results. Water can be prevented from being sent to the side.

In this case, if only one of the flame detection means and the water detection means is operated, the detection accuracy of both detection means can be improved, and the water detection can be improved during the operation stop, the predetermined time immediately after the start of operation, the predetermined period during combustion, etc. If the flame detection is limited to an unnecessary period, combustion control can be effectively executed.

[Third Embodiment]

[Configuration of the body]

Fig. 39 is a perspective view of the main body of the petroleum heating machine according to the present invention, and Fig. 40 is a perspective view of the main body rear of the petroleum heating machine. 39 and 40, in the petroleum heating machine, the exterior portion of the main body B1 accommodating the combustion portion and the oil supply tank includes a front plate B6 covering the front surface, and a side plate covering the side surface and the rear surface ( B7) and the upper plate B8 covering the upper surface, are formed in a lower open box shape, and the main body B1 is mounted on the pedestal B5.

In the lower part of the front plate B6, a blower outlet B2 for blowing hot air is formed inside the front plate B6, and in the upper part of the front plate B6, an operation unit B3 containing switches for switching the operation state is disposed. The top port B8 is provided with a blowout port 4b of the oil supply tank, and the tank cover B4 is provided at the blowout port 4b to open and close freely.

On the back side of the side plate B7, a convection fan B9 for sucking air in the room is disposed, guarded by a mesh-like convection guard B10 of the convection fan B9, to prevent inhalation of dust. I can do it. Moreover, the temperature sensor B11 which detects room temperature is provided in the back side of the side plate B7.

FIG. 41 is a schematic diagram showing a liquid fuel combustion device and its fuel path in the petroleum heating device of FIG. The liquid fuel combustion device A is a vaporizer of the oil supply tank B12 and the combustion part B25 when the oil supply tank B12 which can be freely separated from the main body B1 and the oil supply tank B12 are attached to the main body. The fuel from the solenoid pump B14 and the solenoid pump B14 which serve as the oil feed pump which sends the fuel of the 1st connection means B13 and the 2nd connection means B17 which connect B15, and the oil supply tank B12, Vaporizer B15, which is a vaporized gas, vaporizer gas of vaporizer B15 is ejected through a nozzle, burner B16 mixed with combustion air and combusted, and air is sent to the oil supply path to supply fuel to the electromagnetic pump B14. An air valve B18 serving as a shut-off valve for interrupting the supply, and a supply path B for supplying fuel from the oil supply tank B12 to the vaporizer B15 by connecting these members, and the oil supply tank in the vaporizer B15. The oil return path C which returns fuel to B12 is formed.

In the oil supply path B, the pipe B22 is connected between the oil supply side first connecting means B13 and the electromagnetic pump B14 of the oil supply tank by a pipe B21, and between the electromagnetic pump B14 and the vaporizer B15 is a pipe B22. Are connected to each other. In the oil return path C, between the vaporizer | carburetor B15 and the oil return side 2nd connection means B17 is connected by the oil return piping B23.

Connection means B13 and B17 which connect the oil supply tank B12 and the combustion part B25 are the 1st connection means B13 provided in the middle of the oil supply path B from the oil supply tank B12 to the electromagnetic pump B14. ) And second connecting means B17 provided in the middle of the oil return path C for returning fuel from the vaporizer B15 to the oil supply tank B12. Each connecting means B13, B17 is comprised by the oil tank side connection joint part, and a combustion part side connection joint receiving part, respectively. Further, as will be described later, both connection joints B13a and B17a of the first and second connection means B13 and B17 are integrated on the oil supply tank B12 side to form a joint portion B47 (FIG. 49), Moreover, the joint receiving part B13b, B17b of the 1st and 2nd connection means B13, B17 is integrated in the combustion part side, and the joint receiving part 100 (FIG. 64) is comprised, and it is a compact structure.

FIG. 42 is a state diagram in which the front plate side of the main body of FIG. 39 is partially cut. FIG. As shown in the figure, the combustion part B25 is provided in the left side and the oil supply tank B12 and the electromagnetic pump B14 are provided in the front side of the main body B1. The left side of the main body B1 includes a combustion section B25 having a burner B16 and a vaporizer B15, a combustion section frame B26 surrounding the combustion section B25, and a combustion section frame B26. Combustion frame front (B27) covering the front upper portion.

The combustion part B25 is the vaporizer | carburetor B15, the burner B16, the burner box B28 which accommodates the burner B16, the burner partition board B29 which fixes the burner box B28, and the burner B16. The combustion chamber B30 which surrounds the flame | flame of this is provided.

43 and 44 are schematic diagrams of the vaporizer B15 and the burner section 16. As shown, the vaporizer | carburetor B15 is built in the said main body, The vaporization element B15a which heats fuel and vaporizes, The nozzle B31 which ejects the fuel vaporized by this vaporization element B15a, and this nozzle B31. Needle (B32) for opening and closing the hole of the), solenoid valve (B33) connected with the needle (B32) to move the needle (B32), fuel inlet (B15b) for supplying fuel to the vaporization element (B15a), and operation stop. Is composed of an oil return pipe B23 for discharging the fuel in the vaporizer B15, and a heat recovery unit B15c for recovering combustion heat of the burner B16.

The vaporization element B15a is a cylindrical sintered ceramic fine particle, and tar generated when the fuel is vaporized is deposited toward the inside from the surface of the vaporization element B15a.

The fuel inlet B15b of the vaporizer | carburetor B15 becomes the dual structure of the outer stainless pipe B34 and the inner copper pipe B22. The outer side is made of the stainless steel pipe B34 in order to reduce the heat conduction in the vaporizer | carburetor B15 and to suppress the temperature rise of the fuel which enters the vaporizer | carburetor B15. In addition, the diameter of the stainless steel pipe B34 is made larger than that of the copper pipe A89 to further suppress heat conduction transferred from the stainless steel pipe B34 to the copper pipe. The tip of the copper pipe A22 is from the vaporizer B15 to the external position.

The solenoid valve B33 is movable piece by excitation of the electromagnetic coil B33a wound by the coil shape, the movable piece B33b and the electromagnetic coil B33a which were movable axially with the needle B32 inside. It consists of the adsorption piece B33c which adsorbs and moves B33b to a nozzle closing direction, and the press spring B33d which elastically supports the movable piece B33b to a nozzle opening direction.

In the solenoid valve B33 of the above structure, the movable piece B33b is adsorbed and detached from the suction piece B33c by the energization and non-energization of the electromagnetic coil B33a, and the needle B32 is connected to the movable piece B33b. ) Moves to open and close the hole of the nozzle B31 of the vaporizer | carburetor B15.

The burner B16 is composed of a mixing tube B16a for mixing the combustion gas vaporized by the vaporizer B15 and the primary combustion air, and a flame hole B35 (FIG. 41) for burning the mixed fuel gas. have.

45 and 46, the burner box B28 has a box shape in which the upper side is opened and can accommodate the burner B16, and a flange of the mixing pipe of the burner B16 is mounted on the bottom side. A substantially rectangular rectangular hole is formed, and the mounting hole of the ignition heater B35 and the flame sensor B36 is formed in the side surface.

Burner cover B37 is attached to the lower surface of burner box B28. The burner cover B37 is inverted and is installed on the lower side of the burner B16, and the sound absorbing and insulating material is fixed to the burner box B28 in a state of sticking to the inside to absorb the combustion sound and the burner itself. It is supposed to prevent the temperature drop.

As shown in Figs. 45 and 46, the burner partitioning plate B29 is bent upwardly at the left and right ends and the rear side, and at the same time, the front side is bent at an oblique lower side, and a rectangular rectangular hole is formed at the center. The upper opening edge of burner box B28 is fixed around it, and the combustion flame of burner B16 passes through the square hole. Further, a plurality of mounting holes of the combustion section B30 are formed around the partition plate B29.

As shown in FIG. 45, the combustion chamber B30 surrounds the combustion flame of the burner B16 in all directions, and the opening part was formed in the upper front side, and is comprised by the combustion chamber front B38 and the combustion chamber back B39.

The combustion chamber front B38 bends left and right inward, inclines the upper side slightly inward, and lower side is bent outward and is fixed to the partition board B29. In addition, the heat-resistant material is used in front of the combustion chamber B39 so that it may not burn even if it burns abnormally.

The combustion chamber back B39 has an inverted U-shape as viewed from the upper surface, the front left and right sides of the combustion chamber are bent inward to form an edge standing portion, and is mounted in front of the combustion chamber B38. The upper side of the rear wall behind the combustion chamber B39 is inclined inward, and the lower side is bent outward and fixed to the partition plate B29. Lansing pieces B39a and B39b are respectively formed at the left and right side portions behind the combustion chamber B39 to introduce a part of the wind from the convection fan B9 into the combustion chamber B30, thereby improving combustibility as secondary combustion air. It is intended to lower the combustion temperature.

The upper part of the rear part behind the combustion chamber B39 becomes the shape which pushed in << inward, The air hole B39c is formed in the part, and a part of the blowing air from the convection fan B9 arrange | positioned at the back side is a combustion chamber. It is made to flow in in B30, and the rise of a combustion flame as secondary combustion air is suppressed. Both the front and rear surfaces of the combustion chambers B38 and B39 are subjected to heat-resistant coating or black treatment on the inner and outer surfaces thereof to improve the heat resistance.

As shown in Fig. 45, the combustion section frame B26 is formed in an inverted U-shaped box shape to surround the combustion chamber B30. The combustion chamber B26 sucks the air in the room from the convection fan B9 and burns the combustion chamber B30. The heat is taken to form a passage through which the air passes. This combustion part frame B26 is fixed to the left side part, the back part, and the base B5 of the side plate B7 of the main body B1 with a protrusion and a screw. The burner frame B26 is formed with an inclined surface portion B26a with an oblique cut on the upper front side, and a locking portion for fixing the louver of the jet port 2 is bent at the front surface portion. In the inclined surface portion B26a, after the combustion section B25 having the burner B16 or the vaporizer B15 is mounted on the combustion section frame B26, the front of the combustion section frame B27 is placed in front of the main body B1. It can be attached to the upper side at an angle more than a portion.

The combustion chamber frame B27 guides the air sucked from the convection fan B9 to the jet port B2 in the front portion of the main body B1. An overheat protection device is provided to protect the body. In addition, the configuration of the combustion unit frame front B27 has a double structure to prevent local thermal effects.

47 and 69, the right side of the main body B1 is an accommodating portion 4a which opens and closes the tank cover B4 on the upper surface of the main body B1 to detach and store the oil supply tank B12 freely. A detection stand B40 (FIG. 69) disposed on the bottom side of the housing portion 4a and having one component of the fuel amount detecting means B69 and the water detecting means B70 to be described later is provided, and the storage portion 4a is provided. The combustion part side joint receiving part 100 (FIG. 63, FIG. 64) which attaches and detaches freely the oil supply tank side connection joint part B47 (FIG. 49) at the time of main body mounting of the oil supply tank B12 is provided.

The tank storage chamber 4a is divided into tank guides B41 (Figs. 43 and 64) for guiding the oil supply tank B12 when the tank is attached and detached. The tank guide fixing member B42 which fixes the joint receiving part 100 is attached to the part cut obliquely in the right front part of this tank guide B41 (FIG. 64). Since the storage chamber 4a has abolished the fuel tank as in the prior art, the volume of the fuel tank can be allocated to increase the oil supply tank capacity or reduce the main body volume. There is an advantage that does not occupy.

The shape of the insertion point including the tank outlet 4b of the storage part 4a is larger than the shape seen from the upper side of the oil supply tank B12 as shown in FIGS. 47 and 69, and is almost the same shape. The left side is almost perpendicular to the front side and the back side of the main body B1, the right side is almost perpendicular to the front side and the rear side of the main body B1, and both of the front and rear corner portions are R-shaped. In addition, a tank guide fixing member B42 for supporting the combustion-side combustion joint receiving part 100 is provided on the upper right corner at a predetermined distance from the upper surface B8 of the main body B1 as described above. have.

[Configuration of Refueling Tank]

Fig. 48 is a perspective view of the oil supply tank B12 viewed from the back side, and Fig. 49 is a schematic diagram showing the joint portion on the oil supply tank side. As shown in the figure, the oil supply tank B12 has a substantially flat plate oil supply tank left side member B12a and a cross section U-shaped left side surface of the container shape in which the oil supply tank right side member B12b is press-formed. Formed in a substantially rectangular parallelepiped shape, which is formed into a substantially rectangular shape as viewed from the upper surface side, and the corners of the right and left front and rear are formed in an R shape.

Therefore, even when the oil supply tank B12 is inserted into the storage chamber 4a in a state in which the left and right sides are reversed when the oil supply tank B12 is inserted into the storage portion 4a, the oil supply tank right side at the R-shaped corners at the right and left sides of the tank outlet 4b. Corner portions before and after the member B12b touch the tank B12 so that the tank B12 cannot be inserted.

On the oil supply tank right side member B12b side, the handle A43 which consists of the metal ring B43b with which relief rotation is freely attached to the tank upper surface, and the resin handle B43a fixed to the center part, both sides, and three surfaces of an upper surface are shown. A fuel injection oil supply port B44 formed on the inclined surface portion B12c formed and connected, and a closing means B19 for closing the oil supply port B44 are provided.

Further, a flowmeter for visually recognizing the fuel level in the oil supply tank B12 is provided on a side surface near the means for blocking B19, and a recess in which the side portion near the flowmeter, that is, the corner portion on the right front side of the tank right member enters the inside ( B12g) is formed, and oil supply tank side connection joint part B47 is being fixed to this recessed part B12g. This connection joint part B47 is set so that it may not go out with respect to the substantially rectangular tank projection surface by being fixed to the recessed part B12g of the oil supply tank, and it enters into the substantially rectangular tank storage chamber 4a.

On the bottom face side (FIG. 48, FIG. 60) of the oil supply tank B12, the drip tray B71 (FIG. 60) which is one component of the water detection means B68 which detects the water in the tank B12 protrudes, In order to protect this drip tray B71, the tank leg part B50 (FIG. 48) which protrudes downward around it is welded and fixed.

50-55, the small air hole B51 (about 1.5 mm in diameter) is formed in the upper surface side of the oil supply tank B12, and the inside of the oil supply tank B12 does not become a negative pressure state. have. Further, the air hole B51 has a measure for preventing fuel from flying out of the fuel tank during transportation, or a measure for preventing the fuel in the fuel tank B12 from leaking from the air hole even when the fuel tank is turned over. It is preferable to implement measures such as opening / closing the oil supply tank in accordance with the presence or absence of the oil supply tank, and the following aspects can be adopted as air hole closing means for this purpose.

That is, Embodiment 1 of the air hole blocking means B52 which prevents fuel from flying out of the oil supply tank during transportation of the oil supply tank, as shown in FIG. It is provided with the fuel scattering prevention plate 301 surrounding an inner surface side, and the communication hole 302 formed so that it may communicate with the inside of a tank in the position which deviated from the position just under the air hole B51 in the bottom face side of this scattering prevention plate. .

The scattering prevention plate 301 is formed in the shape of a dish so as to surround the air hole B51 and welded to the inner surface of the tank. ) Is formed and the air hole B51 is formed just above the shallowest part.

In the above structure, even when the fuel is supplied to the oil supply tank B12, the fuel enters through the hole 302 of the fuel scattering prevention plate 301 even when the handle A43 is held and transported. Since the inner volume of the tank becomes a cushion and fuel is accumulated inside the scattering prevention plate 301 or is discharged through the communication hole 302, the fuel is ejected from the air hole B51 even when the fuel tank B12 is transported. none.

As an embodiment 2 in which the fuel in the oil supply tank B12 does not leak from the air hole B51 even when the oil supply tank B12 is inverted, the air blocking means C52 as shown in FIG. 55 can be exemplified.

That is, in this Embodiment 2, the press plate 310 in which the air hole B51 was formed in the ceiling surface is in close contact with the opening 320 formed in the upper surface of the oil supply tank B12 by the O-ring 314, and the air blocking means C25 includes a guide guide 313 disposed on the inner surface side of the air hole B51, a spherical weight 312 built in the guide guide 313 so as to be movable up and down, and the weight 312 and the air hole. It is comprised by the obstruction plate 311 which obstructs the up-and-down movement of the weight 312 interposed between B51, and closes the air hole B51.

A plurality of locking means 315 for mounting with the oil supply tank B12 on the side of the pressing plate 310 are formed at intervals in the circumferential direction, and for screwing the cylindrical guide guide 313 having a bottom inside thereof. The screw 322 is formed. The locking means 315 is composed of a wedge-shaped hook projecting radially outward, and the hook 315 is engaged with the edge locking portion 321 protruding from the tank opening edge.

The obstruction plate 311 is for blocking the air hole B51, and the peripheral edge portion 316 of the ceiling surface becomes the R surface, so that the inside of the guide guide 313 is easily moved. And the peripheral edge part of the bottom face of the blocking plate 311 may also be R surface.

The guide guide 313 has a bottomed cylindrical shape, the inner bottom portion of which is formed with an inclined tapered surface 317 having a central portion at a lowermost position for moving the cloud weight 312, and a tapered surface 317. At the bottom of the hole, a hole 319 through which air flows is formed. In addition, the outer side of the upper side of the guide guide 313, a screw 323 for screwing engagement with the female screw formed on the inner side of the pressing plate 310 is formed. In the tapered surface 317, a plurality of grooves 318 are formed from the upper portion to the lower hole 319, and the air flows in the standing state of the oil supply tank B12. The tapered surface 317 is an angle at which the air hole B51 can be blocked by the rolling weight 312 moving along with the rolling weight 312 and the obstruction plate 311 moving upward when the oil supply tank B12 is turned over. It is set.

In the above configuration, when the refueling tank B12 is inverted, the rolling weight 312 rolls the tapered surface 317 of the bottom of the guide guide 313, and further rolling the side surface, and the rolling weight 312 is closed plate 311. ) Is pushed toward the air hole B51 to block the air hole B51 with the closing plate 311 so that the fuel in the oil supply tank B12 does not leak from the air hole B51.

In the standing state of the oil supply tank B12, the cloud weight 312 is located on the tapered surface 317 of the bottom portion of the guide guide 313 by its own weight, and is formed in the groove 319 formed in the tapered surface 318. As a result, the hole 319 communicating with the oil supply tank and the air hole B51 are in communication with each other so that the inside of the tank does not become a negative pressure.

In addition, as Example 3 of the air hole opening and closing color means D52, the air hole B51 is made into the opening / closing state according to whether or not the air hole B51 is attached to the main body of the oil supply tank B12. That is, the air hole opening and closing color means D52 is equipped with a valve 330 and a valve 330 which open and close the air hole B51 of the oil supply tank B12 freely as shown in Figs. 49 to 51. One tank valve lever 331, the lever cover 332 for housing the tank valve lever 331, the movable rod 333 for moving the tank valve lever 332 up and down, and the movable rod 333 elastically up and down The lever spring 334 which supports is provided.

In the tank valve lever 331, the mounting portion of the valve 330 forms a convex portion 335, one end thereof is Z-shaped, and functions as a support point 336, and the movable rod 333 is joined to the other end thereof. A joining hole 337 is formed. The joining hole 337 becomes a shape with some margin at the time of joining with the movable rod 333. As shown in FIG.

The lever cover 332 has a recess for accommodating the tank valve lever 331. One end of the concave portion is opened, and the other end side is closed, and a supporting slit hole 338 of the support point 336 of the lever 331 is formed. At one end of the open side of the concave portion, a screw hole 339 for fixing the cushion cover 120 of the connection joint portion B47 (Fig. 49) is formed.

The movable rod 333 moves the tank valve lever 331 up and down and penetrates the vertical hole part 340 formed in the center part of the joint main body B55 of the connection joint part B47, and can move to an up-down direction. have.

The valve 330 is provided with a valve body 34l having a fin-shaped tip end that vertically moves the air hole B51 of the oil supply tank B2 and a sealing packing 343 attached to the root portion of the fin part. . Moreover, the air hole B5l is formed in the upper side of the spherical part 343 formed so that it may protrude outward on the upper surface of the oil supply tank B12.

In the above configuration, in order to incorporate the air blocking means D52 in the connection joint portion B47, the movable rod 333 in which the lever spring 334 is inserted into the central longitudinal hole portion 340 of the joint body B55. Is inserted from the lower side, the Z-shaped support point portion 336 of the tank valve lever 331 is inserted into the slit hole 338 of the housing portion of the lever cover 332, and the other end hole of the tank valve lever 331 is inserted. The upper end of the movable rod 333 can be assembled to the 337 by a speed nut.

When the oil supply tank B12 is attached to the main body B1, the lower contact sheet 350 of the movable rod 333 attached to the connection joint B47 of the oil supply tank B12 receives the combustion side connection joint. In contact with the upper rib portion of the packing pressing portion 103 of the portion 100, the movable rod 333 moves upward by being pushed by the rib portion, and the tank valve lever 331 also swings upward to follow the tank valve. Since the valve 330 attached to the lever 33l also rises upward at the same time, a gap is formed between the valve 330 and the air hole B51 of the spherical portion 343 of the oil supply tank Bl2, whereby air It flows into the oil supply tank B12 through the hole B51, and the internal pressure of the oil supply tank B22 is always in an atmospheric pressure state (FIG. 51).

At this time, before connecting the oil supply tank side connection joint part B47 and the combustion part side joint receiving part 100, the movable rod 333 of the air hole opening-and-closing means D52 is a packing pressing part of the joint receiving part l00. By setting the upper and lower positional relations in contact with the upper rib portion of the 103 to open the air hole B5l, troubles such as leaks in the connecting means are prevented even if the main body is connected to the main body at a high pressure in the oil supply tank. do.

Moreover, when the oil supply tank B12 is taken out from the main body B1, the movable rod 333 attached to the connecting means of the oil supply tank B12 will have the packing press part 103 of the combustion side connection joint receiving part 100. The valve 330 attached to the tank valve lever 331 is also opened because the one that has been in contact with the upper rib portion of the opening is opened and the movable rod 333 is forced to move downward by the elastic support force of the lever spring 334. At the same time, it goes down and puts the air hole D5l in the valve closed state. Therefore, air does not flow into the oil supply tank B12 through the air hole B51, and even if the oil supply tank B12 is conducted, the fuel in the oil supply tank B12 does not overflow.

Moreover, since the spherical part 343 in which the air hole B51 is formed is a convex part upward, dirt and dust are hard to accumulate, and the trouble by long time use disappears.

Subsequently, in the fourth embodiment of the air hole closing means E52, as shown in FIGS. 49, 52, and 53, the air hole B51 is formed at the bottom of the concave surface portion 348 formed on the upper surface of the oil supply tank Bl2. Is formed, and the valve body 346 whose pin-shaped tip is vertically moved up and down by the air hole B51 of the oil supply tank B12 has the valve 330 which opens and closes this air hole B51 freely, and the pin part It consists of a sealing O-ring 346 mounted at the base. The rest of the configuration is the same as in the third embodiment.

In the above configuration, since the concave surface portion 348 in which the air hole B5l is empty is concave downward, dirt and dust are easy to accumulate, but dirt and dust are formed at the front end of the valve body 345 of the valve 330. Since the pin portion moves up and down to remove dirt and dust, there is no trouble regarding opening and closing of the air hole B5l. In addition, the formation of the concave surface portion has an advantage that the mold structure is simplified compared with the formation of the convex spherical surface portion in the third embodiment.

In addition, in the third and fourth embodiments, the lever spring 334 is used to force the tank valve lever 331 to be elastically supported in the valve closing direction, but the tank valve lever is not used without the lever spring 334. The method of closing the valve using its own weight of the movable rod 333 may also be adopted. In addition, in the third and fourth air hole closing means D52 and E52, the movable rod 333 moves freely through the connecting joint portion B47 to freely move the air hole before connection of the connecting means at the time of mounting the main body of the oil supply tank. In addition to adopting the configuration of opening the valves, these devices are installed at the same location to compact the device, but the air hole closing means is provided at a location separate from the connection joint to open the air holes before the connection means. The configuration may be. In this case, what is necessary is just to set the contact position of a movable bar to contact a member separate from a main body side connection joint receiving part.

(Configuration of Connection Joint)

Fig. 56 is a sectional view showing an oil supply side joint B13a of the connecting joint part, Fig. 57 is an exploded perspective view showing a connection state with the tank side suction pipe B20, and Fig. 58 is an oil return side joint B17a. 59 is an exploded perspective view showing a connection state with the tank side pipe B63.

As shown in FIG. 49, the tank side connection joint part B47 integrates the oil supply side connection joint B13a and the oil return side connection joint B17a. Each connection joint B13a, B17a is provided with the joint main body B55, the valve mechanism B56, and the valve | bulb press part B57, as shown to FIG.56 and FIG.59, and the base end of each main body B55. The side flanges B55d (Fig. 56) are connected to each other and integrated. This connection joint part B47 is arrange | positioned in the recessed part Bl2g (FIG. 48) formed in the right front corner part of the oil supply tank B12 side, and the oil supply tank through the packing B53 by the joint press plate B54. The bottom surface of the recess B12g of B12 is fixed by a screw B54f.

As shown in Figs. 56 and 58, each of the joint main bodies B55 includes a tip-side cylindrical body part B55a, tubular protrusions B55e and B55f protruding from the body part B55a toward the oil supply tank side, and The proximal end flange B55d protrudes radially outwardly from the middle of the projecting portion B55e, which is formed of a synthetic resin, and the proximal end flanges B55d of both connection joints B13a and Bl7a are connected to each other. It is integrated.

In the trunk | drum B55a, the cylindrical taper part (closed surface) B55b which tapered the diameter gradually from the lower end part to the lower side, and the cylindrical shape which keeps a predetermined diameter the predetermined length at the lower end of this taper part B55b. The part B55c is continuously formed integrally, and the valve mechanism B56 is provided inside.

Each valve mechanism B56 incorporated in the tubular body portion B55a has an oil supply path B from the oil supply tank B2 to the electromagnetic pump B14 and an oil return path from the vaporizer B15 to the oil supply tank B12. Opening and closing of (C) is made freely, and is comprised from the valve body B59, the valve body O-ring B60, and the valve body spring B61.

The valve body B59 has a shape substantially similar to the lot internal shape of the trunk portion B55a, the taper portion B55b, and the cylindrical portion B55c of the joint body B55, and the inside of the joint body B55. The reciprocating drive is freely shaped. That is, the valve body B59 is connected to the lower end of the stopper portion (closed surface) B59b and the stopper portion B59b, which are almost conical, are thinner than the cylindrical portion B55c, and have a columnar movable portion B59a. The ring-shaped O-ring packing B60 is attached to the tapered portion of the stopper portion B59b so as to be able to contact the tapered portion B55b of the joint body B55 in a pivotal contact shape.

The length of the movable part B59a is such that the O-ring packing B60 of the stopper B59b has a tapered part B55b in order to control the contact between the stopper B59b and the tapered part B55b of the main body B55. It is set to the length which the front-end | tip protrudes from the cylindrical part B55a in the state of valve closeness close to the inside.

The valve pressing portion B57 seals the upper hole of the cylindrical body portion B55a through the 0 ring B58, and an annular recessed groove for easily supporting the valve body spring B61 is provided on the rear surface thereof. Formed.

The valve body spring B6 is built in the body portion B55a and is interposed between the valve presser B57 at the upper end and the stopper portion B59b of the valve body B59 to move the valve body B59 in the valve closing direction. Elastic support.

The proximal end flange B55d extends radially outward so as to integrally connect both joints B13a and B17a, and is formed in a substantially rectangular plate shape, and has an annular joint packing (inside the flange B55d). B53 is fitted to the outside to prevent the fuel from leaking out from the periphery of the projections B55e and B55f.

The tank-side protrusions B55e and B55f are formed in a tubular shape, and the inner side portion of the tank side protrusions B55e and B55f is inserted inwardly through the opening B64 formed in the tank wall of the oil supply tank B12, and the inner passageway thereof. The front end of the suction pipe B20 and the return pipe B63 is connected. The level of this internal passage is located above the liquid level of the fuel of the oil supply tank, and the fuel in a tank does not inadvertently flow to the fuselage | body part B55a side.

56 and 58, the inner passage of the protrusions B55e and B55f is set to a diameter to which the suction pipe B20 and the oil return pipe B63 can be fitted inside, and the tank inner end side in the middle of the passage. The suction pipe B20 or the return pipe is formed at the end B55r between the passage B55q having a large diameter and the passage B55s having a small diameter at the outer end side, and having a large diameter for fitting the pipe fixing member to the inside. The washer portions B20a and B63a (Figs. 57 and 59) of the B63 can be positioned. The small-diameter passage B55s (FIG. 58) communicates with the valve chamber of the body portion B55a.

Slit holes B55g and B55m penetrating in the radial direction are formed on the inner end sides of the protrusions B55e and B55f, and the diameters thereof are set to be wider using the elasticity. Insertion grooves B55j and B55n, which allow the washer portion B65a, which is a separation prevention member B65 of the suction pipe B20 or the return pipe B63, to fit on the inner circumferential surface of both tubes with the slit holes B55g and B55m interposed therebetween. (Fig. 59 (b)) is formed.

In addition, as shown in FIG. 57, the dimension in the tank of the oil feed side protrusion B55e is set shorter than that of the oil return side protrusion B55f (FIG. 59 (a)) so that the suction pipe B20 can be easily connected. It is supposed to be.

The suction pipe B20 is formed in an inverted L shape, its upper horizontal portion is connected to the oil supply joint B13a (Fig. 41), and the lower end of the vertical portion of the oil supply tank Bl2 for pumping fuel of the oil supply tank Bl2. It reaches near the bottom and is connected to the suction port 66 (FIG. 60). At the tip of the horizontal portion of the suction pipe B20, a flange-shaped washer portion B20a (Fig. 57) for positioning the zero ring at the time of connection with the connection joint portion B47 is formed.

The oil return side protrusion B55f (Fig. 59) is formed longer than the oil feed side protrusion B55e (Fig. 57), and the slit holes B55k and B55m are formed above and below. Of the upper and lower slit holes B55k and B55m, the upper slit hole B55k is set larger than the lower slit hole B55m, and the inner diameter is formed to have a dimension slightly larger than the outer diameter of the return pipe B63, and the return pipe inside A washer groove B55n for hooking and fixing the washer portion B65a of the pipe fixing member B65 toward the hole for inserting (B63) and the outside thereof is formed.

The return pipe B63 is bent in an L shape in the oil supply tank Bl2 so that the fuel from the vaporizer B15 is returned to the oil supply tank B12, and the pipe outlet B63b is provided upward. . This prevents the fuel outlet from inadvertently leaking to the combustion side because the pipe outlet B63b protrudes above the fuel level in the oil supply tank B12 even when the fuel in the oil supply tank B12 rises abnormally due to the temperature difference. To do this.

As a means for fixing the suction pipe B20 and the return pipe B63 so as not to fall out by the projections B55e and B55f, a pipe fixing member B65 having a cross-sectional C-shape as shown in Figs. 57 and 59 is provided. The pipe fixing member B65 is provided with a flange-shaped washer portion B65a that can be engaged with the inner surface insertion grooves B55j and B55n of the protrusions B55e and B55f on its outer surface, and the slit hole B65b in one direction. ) Is formed, and the inner diameter thereof is slightly smaller than the outer diameter of the suction pipe B20 or the return pipe B63.

In addition, the raw material of the joint main body B55 is not limited to resin, but may be metal, and the cross-sectional shape of the trunk | drum B55a, the taper part B55b, the cylindrical part B55c, etc. is not limited to circular shape. .

As for the joint press plate B54 which fixes the connection joint part B47 to the oil supply tank B12, as shown in FIG. 56, the center of a metal plate is cut out and the lancing piece B54a is formed. The lancing piece B54a is configured to support the valve pressing portion B57 of the connecting joints Bl3a and B17a from the upper side so as not to be pulled out of the body portion B55a. The release hole B54b which penetrates the protrusion parts B55e and B55f of the connection joints Bl3a and B17a is formed in the center which cut | disconnected this lancing piece B54a, and the circumference | surroundings of this release hole B54b is a connection joint part ( It becomes the peripheral press part B54d with the rib B54c which presses the peripheral edge of B47), and the center press part B54e extends between both connection joints B13a and B17a in the lower center part of the release hole B54b, and have.

The peripheral pressing part B54d and the center pressing part B54e are fixed to the oil supply tank B12 with the screw B54f with the base end side flange B55d of the connection joint part B47. Moreover, the left-right position shift of the connection joint part B47 is prevented by the release hole B54b and the center press part B54e.

As for the connection joint part B47, as shown in FIG. 49, in order to prevent the connection joint part B47 from contacting another member when the oil supply tank B2 falls, the cross-sectional L-shaped cushion cover 120 is prevented. Is covered from the upper surface of the oil supply tank B12. The outer surface of the cushion cover 120 is a flat guide surface 120a, and a protective cover ll1 (Fig. 68 (b)) covering the air valve B18 (Fig. 66) of the connection joint receiving portion 100. It serves as a guide guide when the oil supply tank is attached to the main body by facing the guide face 11a (Figs. 65 and 66) formed on the opposing surface of the apparatus.

The washer portion B66 (Fig. 60) side connection portion at the lower end of the vertical portion of the suction pipe B20 is also formed with a washer portion similar to the connection portion with the connection joint portion, and the suction port B66 is connected. The suction port B66 is formed in a substantially cylindrical shape and has a plurality of feet at the lower end thereof. The stainless steel mesh filter B66a is simultaneously machined and inscribed in the base portion, and the suction pipe B20 is connected to the upper side thereof. A pair of slit holes B66b are formed to face each other, and a suction pipe B20 is connected to the upper end thereof.

As shown in FIG. 60, the inlet port B66 is mounted on the hole of the inlet fixing plate B67 of the oil supply tank B12 so as not to move so that the inlet port B66 does not collide with the inner wall of the oil supply tank B12. Doing.

In the above configuration, the order of assembling the connecting joint portion B47, the suction pipe B20, and the return pipe B63 to the oil supply tank B12 is the oil supply tank left side member and the right side members Bl2a and B12b (FIG. 48). After press working, the packing tank 53 is placed at a predetermined position of the oil supply tank right member Bl2b before the adjoining process of joining the oil supply tank left member Bl2a and the right member B12b through the packing B53 (Figs. 56 and 58). The connection joint part B47 is fixed by the joint press plate B54 and a screw.

At this time, since the valve pressing portion B57 of the joint is pressed from above by the lancing piece B54a of the joint pressing plate B54, the valve pressing portion B57 is pressed against the lancing piece B54a of the joint pressing plate B54. By this, it is supported without protruding from the connection joint part B47.

The suction port B20 and the return pipe B63 are inserted into and fixed to the projections B55e (FIGS. 56 and B55f (FIG. 58)) of the joint body B55 from the inside of the oil supply tank right member Bl2b. After (B66) is built in the suction pipe (B20), the O-ring (B64) is inserted into the tip of the washer (B20a) (Fig. 57 (a)) of the suction pipe (B20), and the protrusion of the joint body (B55). Then, the pipe fixing member B65 is inserted into the suction port side of the suction pipe B20 through the slit hole B65b and pushed toward the connection joint portion B47 side than the washer portion B20a of the suction pipe B20. And pushes the washer portion B65a of the pipe fixing member B65 until it is inserted into the inner washer groove B55j of the protrusion B55e, which causes the pipe fixing member B65 to shrink inwardly. The suction pipe B20 is fixed to the protrusion B55e and can be prevented from coming out of the connection joint part B47.

The method for fixing the return pipe B63 (Fig. 59) is to insert the O-ring B64 at the tip of the washer portion B63a of the return pipe B63, and to fix the hole of the protrusion B55f of the joint main plate B55. When the slit hole B55k of the projection B55f of the joint body B55 passes through the return pipe B63 to the larger side, the return pipe B63 is provided in the upper direction. Thereafter, the pipe fixing member B65 is inserted through the slit hole B65b on the return pipe B63 and pushed toward the protrusion B55f to push the washer portion B65a of the pipe fixing member B65 to the protrusion B55f. ), The pipe fixing member B65 is reduced in diameter and the return pipe B63 is fixed to the protrusion B55f so as to be pulled out from the connecting joint B47. Can be prevented.

Thus, when connecting the suction pipe B20 and the return pipe B63 to the connection joint part B47, it can connect simply without welding using the pipe fixing member B65, and the space of the assembly process is small. In addition, it is suitable for use at a place, and since parts can be disassembled, maintenance cost is also low.

Fig. 60 is a sectional view showing the bottom side of the oil supply tank B12. As shown in the figure, at the bottom of the oil supply tank B12, water detecting means B68 for detecting water generated in the oil supply tank and fuel amount detecting means B69 for detecting the amount of fuel in the oil supply tank B12 are provided. It is.

The water detection means B68 includes a conductive drip tray B71 provided on the bottom of the conductive tank for collecting water, an electrode B72 in contact with the drip tray B71, and an electrode in contact with the bottom of the oil supply tank B12 ( B73) and a watertight packing (B74) as an insulator electrically insulating the drip tray (B71) and the oil supply tank (B12), and the water is stored in the drip tray (B71) by the difference in the electrical resistance of the water and the fuel. It is supposed to detect.

The drip tray B71 is formed separately from the tank B12 using a stainless steel sheet in order to prevent the occurrence of rust, and has an upper surface side in the shape of a plate having a recessed pan shape or a tapered portion downward in the center thereof. A peripheral flange B71a extending radially outward is formed in the outer peripheral portion thereof, and the flange B71a is attached to the bottom mounting hole B12d of the oil supply tank B12 via a rubber packing B74. In addition, when the drip tray B71 applies the non-conductive paint from the outer side of the contact portion with the electrode B72 to the upper side, the drip tray B71 is applied to the outer surface, thereby eliminating the cause of malfunction in the state where water remains and thus accurate water detection. To make it possible.

The packing B74 is an elastic non-conductive material interposed between the circumferential wall of the bottom mounting hole B12d of the oil supply tank B12 and the peripheral flange B71a of the drip tray B71, and the drip tray B71 Flange B71a is fitted in the vertical direction. The packing B74 is fixed to the periphery of the tank mounting hole Bl2d by the ring-shaped pressing member B75 and the screw B76 disposed on the lower surface thereof, whereby the drip tray B71 is placed in the mounting hole Bl2d. It is fixed in watertight state.

The rubber packing (B74) is composed of a rubber member having non-conductivity, oil resistance, and water resistance, and specifically, NBR (acrylonitrile butadiene rubber) having excellent oil resistance, fluorine rubber having excellent water repellency, and the like are used. In particular, when the water repellency of the packing B74 is insufficient, water is accumulated and water remains in the metal parts of the packing B74 and the oil supply tank B12 even after draining, which causes malfunction. Since a rubber material having water repellency was used, high precision and accurate water detection is possible.

Both the drip tray B71 side electrode B72 and the tank side electrode B73 are attached to the detection stand B40 outside the oil supply tank B12. The electrode B72 of the drip tray B71 protrudes from the bottom of the drip tray accommodating recess B40a of the detection stand B40 toward the tank B12 side, and the drip tray B71 is mounted in the tank B12 mounted state. It is a needle-shaped electrode which contacts an outer surface, or an electrode of the shape which linearly contacts.

The tank side electrode B73 is a needle-shaped electrode which is exposed to the outer mounting table B40b of the detection table B40 and contacts the bottom surface B12f of the tank B21 in the mounted state of the tank B21. By connecting both electrodes B72 and B73 to the power source, the drip tray side electrode B72, the drip tray B71, the fuel or water on its inner surface, the tank bottom surface B12f, the tank side electrode B73 and the power source The electrical closed circuit which leads to is comprised, and presence of water is detectable by the difference of the electrical resistance value of the liquid (fuel and water) inside the drip tray B71.

In order to improve this water detection accuracy, the hole wall of the tank side mounting hole B12d for mounting the drip tray B71 is bent downward, and the width is spaced at a plurality of places in the circumferential direction of the bent portion B12d. The thin needle tip B12e having an acute angle protrudes downward, and the needle portion B12e functions as a tank side tip electrode, and conducts the tank side electrode B73 and the tank bottom as a conductive path. have.

The suction port B66 for pumping fuel in the tank B12 is disposed above the needle portion B12e so as not to directly pump water from the internal drip tray portion of the drip tray B71. In addition, by covering the inner and outer portions of the bottom portion of the drip tray B71 with a non-conductive paint or the like, even if water is accumulated in the metal portions of the packing B74 and the oil supply tank B12, the cause of the malfunction may be a factor. I do not want to. In addition, by covering with a non-conductive paint or the like from the inlet port B66 for pumping fuel from the inside of the tank B12 to the upper side from the inner surface of the oil supply tank B12, the damage caused by water in a system other than the electric water detection method is eliminated. It can prevent.

Moreover, the tank leg part B50 which guards the drip tray B71 at the bottom of the drip tray B71 is welded to the bottom face of the oil supply tank B12 as shown in FIG. The shape of the tank leg portion B50 is that ribs or U-shaped legs B50a which are higher than the bottom of the tank welded to the oil supply tank B12 and higher than the height of the drip tray are formed at both left and right ends.

Therefore, even if there are foreign substances on the bottom face of the oil supply tank B12 and the surface of the drip tray B71 when the oil supply tank B12 is removed from the body B1 and the oil supply port B24 is turned upward, the foreign matters may be scratched. It prevents malfunctions of water detection by protecting it from scratches and other marks.

As shown in FIG. 60, the fuel amount detecting means B69 is arranged inside the tank B21, and the float B77 in which the magnet B78 which functions as a detection unit is incorporated, and the magnet B78 is approached and separated. The reed switch B79 provided on the detection stand B40 side facing the float B77 is provided so that ON / OFF may be performed.

The float B77 is built in the permeable cylindrical guide B80 with the upper lid in a state where the magnet is disposed below the upper and lower sides so as to be able to move up and down in accordance with the liquid level fluctuation of the fuel, and the lower end of the guide B80 is provided with water detection means ( It is fixed to the inner surface side of the drip tray B71 of B68).

The reed switch B79 is fixed to the lower surface of the center recess of the detection stand B40 so as to face the float B77. The guide B80 is for protecting the commercially available oil supply hose from contacting the float B77 when the fuel of the oil supply tank B12 is withdrawn. When the metal is machined, the burr does not occur inside. It is carried out.

Therefore, when the fuel in the oil supply tank B12 decreases and reaches a constant liquid level, the reed switch B79 is sensed by the magnet of the float B77, and the operation is sent to the control unit B80 and the display unit B81. It is possible to report the fuel shortage and the like.

The tank leg B50 (FIG. 48) is a press-formed plate-shaped member, has a hole for release of the drip tray B71 in the center portion, and U-shaped legs B50a are formed long in the front-rear direction on both left and right ends. In addition, the tank support surface B50d which supports the lever of the tank mounting detection means B70 (FIG. 69) is formed in substantially Z shape in the site | part corresponded to the back side of a main body. This tank leg part B50 is being fixed in the welding state to the bottom face side of the oil supply tank B12.

Fig. 6L is a sectional view of the tank oil inlet portion. As shown, the oil supply tank B12 has an inclined surface B12c which is a gradient of at least 30 degrees from the upper surface of the tank to the lower side between the upper surface and two side surfaces adjacent thereto, and the oil supply port (B12c) is provided on the inclined surface B12c. B44) is arranged. The oil supply port B44 has a metal plug B44a projecting outward from the inclined surface, and the opening and closing of the metal plug B44a is closed by the rotationally driven lid member.

The oil supply port blocking means B19 of the oil supply port B44 of the oil supply tank B2 has a hole fitted to the oil supply port B44, and a fixed plate B82 which is spot welded to the inclined surface B12c and is integrated with the fixing plate B82. Z-shaped standing piece B82a cut out to the upper handle side of (B82), movable plate B83 freely supported for rotational driving opening and closing by fixed angle 160 welded to the standing piece B82a, and movable Cover member B85 which is arrange | positioned at the inner surface side of plate B83, and with the packing B84 which closes the metal stopper B44a of oil supply port B44, and this cover member B85 and the inner surface of movable plate B83. Interlocking means B87 which supports the cover member B85 to press the cover member B85 to the metal stopper B44a side of the oil supply port B44, and the movable plate B83 in an oil supply port closed position. And a release handle 161 for releasing the locking means B86.

The fixed plate B82 is formed from the lower side of the inclined surface B12c to the vicinity of the tank upper surface. As for the movable plate B83, the tank upper surface side becomes the rotation support point B88, and the locking means B87 is arrange | positioned at the open end side, Even if it tries to open the movable plate B83 in the main body mounting state, the open end is a tank guide. The movable plate length is set so as to be in contact with (B41) and cannot be opened.

The lid member B85 is formed in a deep dish shape, the outer flange B89 of which is not displaceable to the annular stopper member B90 formed on the inner surface of the movable plate B83 and in a direction perpendicular to the plate surface of the movable plate. The movement is free to hang. The packing B84 is an annular member fitted over the surface of the recess in the outer flange outer peripheral portion of the lid member, and is configured to be pressed against the upper edge of the metal stopper B44a. The spring member B86 is disposed in the inner space of the movable plate B83 and the lid member B85.

The locking means B87 is arranged on the tank guide B41 side of the tank storage chamber as the open end side opposite to the rotation driving support point B88 of the movable plate B83, that is, the lower end side of the inclined surface B12c. Hook-shaped locking lever B93 in which rotational driving is freely supported around the shaft B91 on the open end side, and is engaged with the locking lever B93 so as to support the movable plate B83 in the closed position to the fixed plate B82. A pin-shaped locking receiving portion B94 provided and a lever spring B95 for elastically supporting the locking lever B93 in the direction in which the locking lever B93 is engaged with the locking receiving portion B94 are provided.

The coil spring B95 is wound around the rotation shaft B96 of the locking lever B93, one end of which is caught by the lancing piece B93a of the locking lever, and the other end of the coil is caught by the stopper member B90 of the movable plate B83. As a spring member of a shape, it is arrange | positioned in the inner surface of the latching lever B93, and is comprised so that the latching lever B93 may be elastically supported inwardly from the movable plate B83.

As for the locking lever B93, the handle 161 is integrally formed in the outer side, and the back surface of this handle 161 opposes the tank guide B41 by the locking posture of the locking lever B93, and the locking lever is between them. There is a slight gap that makes it impossible to insert the finger for release. Further, even when the locking lever B93 is to be released and rotated in the tank main body mounting state, the handle 161 of the locking lever B93 and the tank guide B41 on the wall of the tank storage chamber abut against each other to engage the locking lever B93. It is to prevent the release of the rotational drive of.

The handle 161 of the locking lever is disposed on the outer surface side of the locking lever B93 as shown in Fig. 62, and is integrally molded of resin in a state substantially the same as the shape of the locking lever B93. The R-shaped concave portion 162 is formed so that a finger can be inserted into it, and both sides 163 have a shape that can be held by a finger tip, and a fine concavo-convex portion is formed on the surface thereof so that the finger tip does not slip. Further, the lever handle 16l is provided with a plurality of pins inside thereof and welded to the locking lever B93.

In the above configuration, when the locking lever handle 161 (locking lever B93) is pulled out in the locked state of the locking lever B93, the hook portion is held against the elastic bearing force of the spring member B95. Out of B94), the latch of the oil outlet closing means B19 is released. However, in the main body mounting state of the tank B2, since the oil inlet B44 is provided on the inclined surface B12c and the lever handle 161 is formed on the locking lever B93, the locking lever B93 is rotated and driven. Even if it is to be released, since the hand cannot be inserted into the gap between the handle 161 and the tank guide B41, the locking lever B93 cannot be released. Therefore, fuel supply can be performed only when the oil supply tank B2 is taken out of the main body, and thus refueling into the main body B1 can be prevented.

Moreover, in the said embodiment, although the example which arrange | positioned the latching lever on the movable board side was shown, the structure which arrange | positioned the latching lever on the fixed board side may be sufficient.

Fig. 63 is an exploded plan view showing the tank guide fixing member, Fig. 64 is an exploded plan view showing the positional relationship between the tank guide and the joint receiving part, and Fig. 65 is an exploded perspective view showing the connection state of the oil supply pipe and the oil return pipe and the joint receiving part. 66 is a sectional view of the oil feed joint receiver, FIG. 67 is a sectional view of the oil return joint receiver, FIG. 68A is a plan view of the standing passage, FIG. 69B is a longitudinal sectional view of the air valve, and FIG. 69 is a plan view of the detector.

As shown in Fig. 69, four peripheral surfaces of the housing portion 4a of the oil supply tank B12 are surrounded by the tank guide B41. This tank guide B41 is formed in the planar rectangular frame shape which bent the metal board | plate material and opened only the back side center part as shown in FIG. 69, The back side center left and right opening edges are bent to the outer side by L-shape, The upper side of the bent portion B41c is caught by the projection on the back portion of the main body side back plate B7, and the lower side is fixed with a screw. The tank mounting detection means B70 is arrange | positioned under this back side opening B41d.

The lower side of the tank guide B41 is disposed along the inside of the left and right standing walls B40s of the detection stand B40, and similarly, the front side is disposed outside the front wall of the detection stand B40 and the boss portion B40j. Moreover, it is arrange | positioned between the rear boss part B40j and the standing wall B40k, and the front-back lower part is fastened to the detection stand B50 (FIG. 70) by a screw.

The left edge of the tank guide B4l (Fig. 64) is cut outward from the upper end to near the middle, and is opened, and both wing pieces B4lb cut by the tank guide fixing member B42 to the opening part B41a. It is fixed with protrusions and screws.

The tank guide fixing member B42 mounts the joint receiving portion l00 and the electromagnetic pump B14. The tank guide fixing member B42 forms a c-shaped box, and the joint receiving portion l00 is screwed at a predetermined position on the upper surface thereof. On the lower surface, the electromagnetic pump B14 is fixed with a screw. The inner side surface of the fixing member B42 is tank storage room so that the recessed part B12g (FIG. 48) which fixes the connection joint part B47 of the oil supply tank does not contact when the oil supply tank B12 is attached to a main body. It protrudes to the side (4a), and the joint receiving part 100 of the upper surface and the tank side connection joint part B47 (FIG. 49) can be connected.

The joint joint receiving part l00 (Fig. 64) is an oil-feeding joint receiving part 13b and an oil return-side joint receiving part B17b integrated with each other, and a copper-based supply pipe B21 is provided to the oil-feeding joint receiving part 13b. This communication connection is carried out, and the copper-type oil return piping B23 is connected to the oil return side joint receiving part B17b.

As shown in Fig. 65, the connection joint receiving portion l00, the supply pipe B21 and the oil return pipe B23 have flange-shaped washer portions B21a, which are formed at the ends of the pipes B21 and B23. Insert the sealing O-ring (B99) on the front end side of B23b) and insert it into the predetermined holes (98c, 98f) of the connection joint receiving portion (l00) to remove the washers (B21a, B23a) of the pipes (B21, B23). The U-shaped groove 10la formed on the lower side of the pipe fixing plate 101 from the outside is inserted into the pipes B21 and B23 through the upper side, and the screw holes 10lb, respectively formed in the fixing plate 10l and the joint receiving part l00, respectively. The two may be fixed to the 100a) using a screw.

The supply piping B21 and the oil return piping B23 use copper-based material, and set the inner diameter dimension of the supply piping B21 and the oil return piping B21 to the small diameter of the supply piping B2l side. Specifically, the inner diameter of the supply pipe B21 is set to 1.5 mm, and the inner diameter of the oil return pipe B23 is set to 3 mm. When the inner diameter of the supply pipe B21 is made larger than l.5 mm, the fuel remaining amount of the supply pipe B21 at the time of fire extinguishing increases, and the fuel remaining at the time of starting operation or re-ignition is discharged from the vaporizer l4. It takes a long time to return to the oil supply tank Bl2, which causes a bad smell. In addition, when the inner diameter of the oil return pipe B23 is 4 mm or more, a phenomenon in which the air in the pipe is replaced with the fuel occurs, and the fuel hardly returns to the oil supply tank Bl2. Becomes On the contrary, when the inner diameter is smaller than 3 mm, only air is sent by the resistance of the pipe, and it may be difficult for the fuel to return to the oil supply tank B12. In addition, the diameters of both pipes are different so that there is no connection error during assembling.

The oil return pipe B23 (FIG. 63) extends downwardly from the vaporizer B15 once inside the main body, as shown in FIG. 42, and again in the horizontal direction of the oil supply tank B12 from the front of the main body. After passing through the front side, it extends substantially vertically to the right side of a main body, and is connected to the connection joint receiving part 100 of the oil supply tank B12.

In this way, a part of the oil return pipe B23 is formed in a substantially horizontal state at the point from the vaporizer B15 to form the pipe B23d so that the vaporized fuel remaining in the vaporizer B15 when the operation is stopped is supplied to the oil supply tank ( When returning to Bl2), the state remains temporarily in the horizontal pipe portion (almost horizontal portion) B23d. At the ignition start, the nozzle is closed for one to two minutes until the fuel in the vaporizer B15 is turned from liquid to gas and the fuel is ejected through the nozzle B31, but the hole of the nozzle B31 is blocked. Therefore, the internal pressure of the vaporizer | carburetor B15 raises, the pressure is applied to the oil return piping B23, and pushes up the fuel which remain | survives in the oil return piping B23, The connection joint receiving part 100 and the connection joint part B47. ) Is returned to the oil supply tank B2.

In addition, since the fuel remaining in the vaporizer B15 at the time of extinguishing is temporarily held in the substantially horizontal portion B23d of the oil return pipe B23, the high-temperature fuel lowers the temperature in the meantime, and the low-temperature fuel is supplied. A material that can be sent to the connecting means side and which has a low heat resistance grade can also be used, which brings advantages of improved durability and cost.

The joint joint receiving part 100 includes a receiving main body B98 fixed with a screw to an upper surface of the tank guide fixing member B42, an oil supply side joint receiving 13b and an oil return joint receiving Bl7b provided in parallel with the receiving main body, And an air valve B8 as a shutoff valve disposed on the receiving body B98.

As shown in FIG. 66, the oil-feeding side joint receiving base 13bb has a rod-shaped valve receiving 98a projecting upward from the concave center position formed on the upper surface of the receiving main body B98, and the receiving main body so as to cover the periphery thereof. An approximately cylindrical rubber connection packing 102 mounted on the upper surface of (B98), and the upper flange of the main body B98 that covers the periphery of the packing 102 and receives the lower flange l02b of the packing l02. The receiving main body is provided with a horizontal cylindrical passage 98c having a substantially cylindrical packing pressing portion 03 fixed by screws and communicating from the groove portion 98b formed around the valve receiving portion 98a to the electromagnetic pump B14 side. It is formed in (B98).

In the middle of the passage 98c, as shown in FIG. 68, an inverted U-shaped raised passage 98d that rises above the passage 98c is formed. This raised passage 98d is formed in the cylinder part 98h integrally formed in the upper surface of the receiving main body B98, and the air valve B8 is provided through the packing 104 in the upper surface recessed part of this cylinder part 98h. It is fixed with a screw and it is in the state which the outlet 18a of the air valve B8 opened to the upper end of the reverse U-shaped channel | path 98d.

As shown in FIG. 68 (a), the raised passage 98d has a longitudinal upward passage 98d1 having a substantially super crescent cross section communicating with the joint receiving portion 13b with the partition 98i interposed therebetween. And a downward passage 98d2 in the longitudinal direction having a circular cross section communicating with the supply pipe B2l on the electromagnetic pump B14 side, and the upper ends of both passages 98dl and 98d2 communicate with the upper side of the partition 98i. It is supposed to be done.

The passage area of these passages 98d1 and 98d2 is set such that the passage 98d2 is smaller than the area of the passage 98dl. This is to reduce the amount of fuel remaining at the time of extinguishing and to shorten the time it takes to return the remaining fuel at the start of the operation or during re-ignition from the carburetor to the oil supply tank. It removes the fuel and quickly returns the fuel to the oil supply tank side to block the path.

The connection packing 102 (FIG. 66) is used for smoothing and sealing the impact when the oil supply joint B13a (FIG. 56) valve body B59 is inserted into the oil supply side joint receiver Bl3b (FIG. 66). As a substantially cylindrical shape, a hole 110a through which the oil-feeding joint B13a side cylindrical portion B55c and the valve body B59 can enter is formed in the upper surface.

The packing pressing portion 103 serves as a guide for improving the sealing property by pressing the connecting packing 110 from above and supporting the connecting joint B47 from the upper side, and connecting the connecting joint B13a to a substantially cylindrical upper surface. Hole 103a through which the side body part B55a and the taper part B55b can penetrate is formed.

The air valve B18 (FIG. 68 (b)) is for receiving air from the outside of the path in the oil supply path from the oil supply tank B12 to the electromagnetic pump Bl4 and cutting off the fuel supply in the oil supply path. The valve body which opens and closes the air hole B18f formed in the valve | bulb press part B18e of the upper side by operating the electromagnetic chamber B18d arrange | positioned around B18b, and the element of this electromagnetic coil B18d ( B18g), a coil spring Bl8h for elastically supporting the valve body B18g in the opening direction of the air hole B18f, and a communication outlet formed at the lower side of the valve chamber so as to communicate with the reverse U-shaped passage 98d on the oil feed side. (Bl8a), the valve body (Bl8g) moves by excitation of the electromagnetic coil (B18d) to close the air hole (B18f), and the elasticity of the coil spring (B18h) by the element of the electromagnetic coil (B18d). The air hole B18f is opened by the support force, passes through the periphery of the valve body B18g, and communicates with the outlet B18a. ), Air is supplied to the ridge passage 98d.

The valve body B18g includes a bottomed cylinder B18i, a toilet B18j freely embedded in the upper end opening thereof, and a spring B18k elastically supporting the valve B18j toward the protruding side. The collision with the valve | bulb press part B18e is made soft at the time of closing of the hole Bl8f.

On the outer circumference of the air valve B18, an air valve cover 11l for protecting it is fastened together with the main body B98 by the connection joint receiving portion l00. The air valve cover 111 has at least its oil supply joint receiving portion B13b (Fig. 66) on the vertical surface 11la, and the protective cover of the connecting joint portion B47 when the oil supply tank B12 is attached to the main body ( 120 (FIG. 50) is provided with a guide function for guiding this.

On the other hand, the oil return side joint receiving portion Bl7b of the second connecting means has a valve mechanism (98) in the lower valve chamber 98i of the valve hole 98e formed in the upper surface of the receiving main body B98 as shown in FIG. 105 is accommodated, and the passage 98f from the vaporizer | carburetor 14 is formed in the horizontal direction in communication with the valve chamber 98i.

The valve mechanism 105 includes a receiving valve body l06 for closing and closing the valve hole 98e freely, a receiving valve body cap 108 for closing the lower side of the valve chamber 98i, the cap 1008 and the receiving device. A valve body spring 107 interposed between the valve bodies 106 to elastically support the receiving valve body 106 in the valve hole closing direction, an O-ring 109 fitted to a closed surface of the receiving valve body l06, And a cap O ring 110 for sealing the receiving valve body cap 108.

The receiving valve body 106 is provided to support the valve body B59 of the oil return side joint B17a, which is the second connecting means, and to prevent odor from leaking when the oil supply tank B12 is removed. To do this.

When the oil supply tank B12 is set to the main body, the receiving valve body spring 1107 is in a compressed state by pressurizing the receiving valve body 1006 by the connecting joint B17a. The receiving valve body cap l08 is a concave receiving guide for guiding the lower portion of the receiving valve body 106 when the receiving valve body 06 moves a certain distance downward by the valve body B59 of the connecting joint B17a. The part 108a and the receiving surface 108b of the receiving valve body spring 107 formed around it are provided.

The receiving valve body cap 108 is inserted through the opening of the bottom side fuel passage of the connecting joint receiving portion l00, and the connecting joint receiving portion l00 is screwed at a predetermined position of the tank guide fixing member B42. When the tank guide fixing member B42 presses the portion, the receiving valve body cap 108 is prevented from popping out of the connection joint receiving portion l00.

As for the connection joint receiving part Bl7b, the connection packing 102 is arrange | positioned similarly to a 1st connection joint receiving in the receiving main body B98, and the packing pressing part l03 is screwed from the upper side of this connection packing 102, and is screwed. have.

The electromagnetic pump B14 as an oil feed pump is fixed to the predetermined position below the tank guide fixing member B42. The connection to the connection joint receiving part l00 of the supply piping B21 and the oil return pipe B23 from the vaporizer | carburetor B15 connected to this electromagnetic pump B14 is the supply piping B21 and the above-mentioned. The O-ring B99 is inserted into the washer portions B2la and B23a of the oil return pipe B23, and then inserted into the predetermined holes of the receiving body B98. Then, the U-shaped groove 10la of the pipe fixing plate l0l. What is necessary is just to fix it with a screw, after passing through piping B2l, B23 in FIG.

In the above configuration, the fuel in the oil supply tank B12 flows from the connection joint B13a (FIG. 56) to the connection joint receiving B13b (FIG. 66) by the operation of the electromagnetic pump B14 to supply the oil supply tank B12. When the fuel in the tank is pumped up by the suction pipe B20, the gap between the main body cylindrical portion B55c and the main body B55 of the valve mechanism B56 opened by opening the fuel in the transverse direction of the connection joint portion B47 is opened. It flows to the connection joint receiving part l3b, and the fuel flows from the solenoid pump B14 to the vaporizer | carburetor B15 via the channel | path 98c from the groove part B98b, and through the raised passage 98d below the air valve Bl8. Is sent.

Fig. 69 is a plan view showing the configuration of the detector, Fig. 70 is a schematic view showing the mounting position of the tank mounting detecting means, Fig. 71 is a schematic view of the drip tray electrode, Fig. 72 is a schematic view of the tank side electrode, and Fig. 73 is a tank mounting. It is a schematic diagram of a detection means.

As shown in the figure, the detection stand B40 (FIG. 70) which mounts the oil supply tank B2 is arrange | positioned at the bottom part of the storage chamber 4a. This detection stand B40 is attached to the pedestal B5 of the lower side of the oil supply tank B12, and the tank mounting detection means B70 which detects the presence or absence of the oil supply tank B12, and the water detection means B68 A mechanism for mounting the electrode is provided.

In the detection stand B40, the up-and-down wall B40s is formed in the left and right ends, and the tip end of the up-side-standing wall B40s spreads outward. An accommodating recess B40a of the pan drip tray B71 is formed near the center of the detection table B40 and the tank leg of the lower surface of the oil supply tank B12 is disposed on both left and right sides of the accommodating recess B40a. The storage recess B40t long in the front-back direction which supports (B50) (FIG. 48) is recessed in two places. Further, a plurality of V-shaped grooves B40c for supporting and fixing the lead wire are formed in the right lower entrance wall of the detection table B40.

The mounting recess B40a and the mounting surface B40b on the left side of the accommodation recess B40t are formed of rectangular holes B40d and B40e in which the contacts of the electrodes B72 and B73 of the water detection means B68 move up and down. Lever receiving parts B40h and B40g are formed in two places.

Mounting screws (B40J) for fixing the tank guide (B41) are installed at the front, rear, left and right four positions of the detection table (B40), and for guiding when fixing the tank guide (B41) to the side plate (B7) near the rear mounting screws. The rail B40k is provided.

The reed part B40n formed in the back surface of the accommodating part B40a of the detection stand B40 is equipped with the reed switch B79 as a switch near the fuel amount detection means B69.

The electrodes B72 and B73 of the water detection means B68 are constituted by the electrode lever 115. This electrode lever 151 is formed by bending a resilient stainless steel sheet in a stepped shape as shown in Fig. 71 (a), and the insertion hole 151a of the lead wire connector of the base portion is provided with a screw hole for fixing the detection table. 151b and the receiving hole 151c formed in the front end side rather than this are formed, and the front end is bent to the upper side in L shape.

On the detection stand B40 side to which the electrode lever 151 is mounted, the lever mounting screw B40q protrudes upward, a fixing hole B40p is formed in the screw, and the lever ( A circular convex receiving portion B40h serving as a support point for the vertical motion of 151 is formed to protrude.

The mounting method of the electrode lever 151 inserts the receiving part B40h of the detection stand B40 into the receiving hole 151c of the electrode lever 151, and then detects the screw hole 151b of the lever 151. The screw is fixed to the screw B40p in accordance with the mounting hole B40q of the base B40. Then, the tip end portion of the electrode lever 151 protrudes from the square holes B40d and B40e toward the surface side. In order to regulate this protruding dimension, the rib B40m protrudes from the back surface of the detection table B40. Thus, since the electrode lever 151 differs from the fixed part of the base and the rocking support point, stress is not concentrated in the fixed part, and durability becomes favorable.

The tank mounting detecting means B70 is disposed at the rear side of the detecting table B40, and as shown in FIG. 61, the tank detecting plate 117 fixed to the rear side of the detecting table B40, and the detecting plate 117. The valve 113 is freely mounted in the up and down direction, and when the oil supply tank B12 is mounted on the main body, a lever 113 which swings in contact with the bottom of the oil supply tank and a switch for contacting and separating by the up and down movement of the lever are detected. The micro switch 112 (FIG. 71, 73) attached to the board 117, and the lever spring 116 which elastically support at the time of the operation | movement of the lever 113 are provided.

The lever 113 is formed in an L shape when viewed in a narrow plane, and one end thereof is formed with a screw 113 serving as a rotation driving support point, and the other end protrudes from the tank detection plate 117 to the detection table B40 side. And the tank base 113a which supports the oil supply tank itself.

The tank detecting plate 117 is formed by bending a plate-shaped member in a U-shape, the shaft portion 117a for mounting the lever on the entrance wall surface, the storage recess 117b for mounting the micro switch 112, and the lever. A square hole 117c substantially equal to the movable width when the tank receiving surface of 113 is moved up and down is formed.

Both ends of the lever spring 116 are caught by the upper plate of the tank detection plate 117 and the lever 113, and the lever 113 is elastically supported in the direction of turning on the micro switch 112.

In the assembly of the mounting detecting means B70, after inserting the lever spring 116 into the lever 113, the tank receiving surface of the lever 113 is 113b in the square hole 117c of the tank detecting plate 117. ), And then, one end side threaded portion 113b of the lever 113 is inserted into the shaft portion 117a of the tank detection plate 117 and fixed by a fixing ring. Moreover, the micro switch 112 is inserted into the pin of the accommodating recess 117 of the tank detection plate 117, and it fixes by a fixing ring and is completed.

The operation of this tank mounting means B70 is that when the oil supply tank B12 is attached to the main body B1, the tank receiving surface 113a of the lever 113 is pushed down by the oil supply tank B12, The microswitch 112 is opened, and it is turned ON on a circuit. On the contrary, when the oil supply tank B12 is not attached to the main body, since the tank receiving surface 113a of the lever 113 does not support the oil supply tank B12, it is pushed upward by the lever spring 116, The micro switch 112 is closed, and is turned off on the circuit.

In this way, the movable contact of the micro switch 112 is open when the tank is mounted, and the use method of closing the tank is adopted. Therefore, the micro switch 112 of the micro switch 112 in the strokes above and below the oil supply tank B12 is adopted. The large margin during operation reduces the occurrence of trouble.

Then, referring to the liquid level of the fuel in the oil supply tank B12 and the positional relationship between the respective connecting means, a passage through which the fuel of the oil supply tank B12 is pumped up from the connection joint portion B47 of the oil supply tank B12 and passes therethrough. (B55p) (FIG. 56) is located above the water level display liquid level of the oil supply tank B12, and it is possible to avoid the fuel leakage from the tank connection part of the connection joint part B47.

In the connection joint receiving part 100, the upper end of the partition 98i of the raised passage 98d (FIG. 68) below the air valve B18 is set above the fuel level in the oil supply tank B12. Here, the fuel liquid level in the oil supply tank is a liquid level position of the normal full water display.

In addition, even when the fuel level in the oil supply tank B12 rises abnormally due to the temperature difference, the pipe outlet B63 of the oil return pipe B63 from the vaporizer B15 side of the connection joint B47 to the oil supply tank B12. ) Is set to be higher than the abnormal liquid level of the fuel in the oil supply tank B12, thereby preventing the fuel from returning to the vaporizer B15 side through the oil return path on the oil supply tank side. In addition, since pump B14 stops even when it is sent from the connection joint part B47 to the electromagnetic pump B14 side, fuel is not sent any more earlier than that. And the position of the air hole B18f of the air valve B18 is set so that it may always be located above the abnormal liquid level, and it prevents fuel from leaking out through the air valve B18 from the oil supply tank B12 to the outside. .

In addition, in the connection joint receiving part 100, since the upper end of the partition 98i of the raised passage 98d below the air valve B18 is always higher than the normal liquid level of the oil supply tank B12, at the time of fire extinguishing, When the air valve B18 is opened and air is supplied into the oil supply path, the fuel tank side path area 98d1 of the raised passage 98d is large, and the fuel is quickly returned to the oil supply tank side, thereby reliably interrupting the supply of fuel.

[Configuration of Control Unit]

Fig. 74 is a configuration diagram of a control circuit for controlling various operation modes by signals from the fuel amount detecting means B69, the water detecting means B68, and the tank mounting detecting means B70. As shown in the drawing, the control unit 141 is composed of a microcomputer 141 incorporating a CPU, a ROM, and a RAM, and on the input side, the fuel amount detecting unit B69, the water detecting unit B68, and the tank mounting detecting unit B70. ) Is connected, and the electromagnetic pump drive circuit 118, the display unit 149, and the valve drive circuit 119 are connected to the output side, and operation control is executed by various input signals.

For example, when the oil supply tank is removed during operation and the tank mounting detecting means B70 is OFF (no tank), the signal is inputted to output the stop signal of the electromagnetic pump B14 to the pump drive circuit 118. At the same time, the control for stopping the operation by outputting the open signal of the air valve B18 to the valve driving circuit 119, or the air cleaning operation mode in which the carburetor B15 is combusted when the tank mounting detecting means B70 is ON. Control to drive can also be executed.

[Operation of Oil Fan Heater]

Next, operation | movement of the petroleum fan heater of the said structure is demonstrated. When the fuel in the oil supply tank B12 is empty, the cover B4 of the main body B1 is opened, and the oil supply tank B12 is pulled out while holding the handle B43, and the closing means B19 is in the state where the handle B43 is upward. ), And refuel the fuel through the oil supply port B44 of the oil supply tank B12. In this case, since the oil supply tank B12 is placed on a flat surface with the handle B43 upward, the oil supply tank B12 does not need to be inverted up and down, and the oil supply cap of the oil supply tank B12 is fueled as in the prior art. It does not get dirty and can supply fuel easily and reliably.

When oil supply is completed, the fuel supply tank B12 which contained fuel opens the tank cover B4 of the main body B1, and sets it to a predetermined position. At this time, the lower side of the cushion cover 120 attached to the connecting joint portion B47 of the oil supply tank B12 is connected to the connecting joint receiving portion along the outside of the air valve protective cover 111 of the combustion-side connecting joint receiving portion 100. Guided to the lower part of the part 100, and the oil supply tank B12 side connection joint part B47 is connected to the combustion part side joint receiving part 100 (FIGS. 75-78).

At this time, in the oil feed side joint B13a of the connection joint part B47, the valve body B59 is guided and inserted into the hole 103a of the packing pressing part 103 of the oil feed side joint receiving 13b. , It enters the hole 102a of the connection packing 102 and contacts the valve support 98a. At this time, the hole 102a of the connection packing 102 is closed-sealed by the main plate cylindrical part B55c of the connection joint part B47, and fuel does not leak out from the connection part.

Then, when the oil supply tank B12 is inserted into the main body B1, the valve body B59 of the oil supply joint B13a moves upward, and the valve body spring B61 is in a compressed state when the oil supply tank B12 is inserted into the main body B1. Then, the valve body B59 enters the valve open state, and the oil supply path B flowing from the suction pipe B20 of the oil supply tank B12 to the electromagnetic pump B14 side through the connection joint B13a is opened.

Similarly, the oil return side joint B17a (FIG. 58) of the oil supply tank B12 performs the same operation, and the valve body B59 of the connection joint B17a is the packing pressing part 103 of the connection joint receiving part 100. The valve body B59 of the oil return-side joint B13a enters the hole 102a of the connection packing 102 and is inserted into and inserted into the hole 103a of the coupling body 102 of the valve mechanism 105 of the receiving body B98. It is connected to the valve body 106. At this time, the main body cylindrical part B55c of the connection packing 102 and the connection joint part B47 is sealed-sealed, and fuel will not leak out.

Then, when the oil supply tank B12 is inserted into the main body B1, the receiving valve body 106 of the valve mechanism 105 (FIG. 67) moves downward to recess the recess 108a in the receiving valve body cap 108. At the bottom, the valve body B59 of the oil return joint B17a is pushed by the receiving valve body 106 to move upward, and the valve body spring B61 is compressed to the valve body B59. Becomes the valve open state. As a result, the oil return path C returned from the vaporizer B15 to the oil supply tank B12 side through the pipe B23 is opened.

When the oil supply tank B12 is attached to the main body B1, and the bottom surface of the oil supply tank B12 reaches the detection stand B40 at the bottom of the storage chamber 4a, the tank leg of the oil supply tank B12 ( The rear lever contact surface B50d of B50 pushes down the lever tank receiving surface 113a of the lever 113 of the tank mounting detecting means (FIGS. 69 and 73) to turn the micro switch 112 on on the circuit.

When the power supply is turned on by operating the operation switch (not shown) of the petroleum fan heater in the oil supply tank mounting state, the air valve B18 is opened in the element state, and thus, when the electromagnetic pump B14 is driven, the air valve ( Air is introduced through the air hole B18f (FIG. 68B) of B18, and air is sent to the oil supply path B. FIG. Therefore, the fuel of the oil supply tank B12 cannot be pumped up from the suction pipe B20, and conversely, the fuel remaining in the oil supply path B is sent to the vaporizer B15, and together with the fuel remaining in the vaporizer B15. Return from the oil return path (C) to the oil supply tank (B12) to ensure that no fuel remains in the path.

In the vaporizer | carburetor B15, the vaporizer | carburetor and a heater are heated by ON of an operation switch, and the vaporizer | carburetor B15 is preheated to predetermined temperature. When the preheating completion temperature is reached, the air valve B18 is energized, the electromagnetic coil B18d is excited, and the valve body B18g moves the air hole B18f in the valve closing direction so that the air from the air hole B18f. Stop the introduction of. Then, the oil supply path B which flows through the connection means from the oil supply tank B12 to the electromagnetic pump B14 becomes in communication, and the fuel in the oil supply tank B12 is sent to the oil supply path B. As shown in FIG.

In the vaporizer | carburetor B15, the fuel sent by the electromagnetic pump B14 turns into vaporization gas form, it ejects from the nozzle B31 of the vaporizer | carburetor B15, mixes combustion air and a burner, and the flame hole 16b of the burner B16. Blows through), and is ignited in the flame hole 16b to combust in the combustion chamber B30. At this time, the control unit 141 (Fig. 74) controls the driving of the electronic pump B14 based on the difference between the room temperature detected by the room temperature thermistor B11 and the set temperature set by the operation unit B3, and the vaporizer B15. By varying the amount of liquid fuel sent to), the amount of heat generated by combustion is appropriately adjusted.

When combustion is started and the flame sensor B36 (FIG. 42) detects a flame current equal to or greater than a preset current value, a fan motor (not shown) is energized, and the blowing fan B9 rotates to suck air in the room. The rotation speed of the fan motor is controlled by the controller 141. The air in the sucked room takes the radiant heat obtained in the combustion chamber B30 and blows it with the combustion gas into the warm air and blows it into the room through the spout 2 to control the temperature.

When the operation of the main body B1 is stopped, the driving of the solenoid pump B14 is stopped and the air valve B18 is opened, the air enters the path from the outside, and the supply of fuel is reliably shut off.

[Other Embodiments]

This invention is not limited to the said embodiment, Of course, many correction changes can be added within the scope of the present invention. For example, of course, the configuration including the filter shown in Figs. 79 to 83 in addition to the configuration of Fig. 61 may be adopted as the configuration of the oil supply port.

Fig. 79 is a schematic cross sectional view showing another embodiment of the oil inlet closure portion, Fig. 80 (a) is a plan view of the filter, Fig. 80 (b) is a sectional side view of the filter, and Fig. 81 is an enlarged view of the top of the filter body.

79 and 80, the filter 300 is provided in the oil supply port B44 of the oil supply tank 6, and when the fuel is supplied to the oil supply tank 6 to remove dirt and dust in the fuel. It is.

The filter 300 is comprised from the filter main body 301 and the mesh part 302 which has fine eyes. The filter main body 301 is formed in a cylindrical shape with a bottom, and is formed in considerable length below the full water level of the fuel of the oil supply port B44 in the state fitted to the oil supply port, and the oil supply port B44 is formed in the upper opening edge. The flange 301a to be mounted on the upper edge of the metal stopper is formed, and the side surface is formed in a lattice shape from the vicinity of the flange to the vicinity of the bottom surface portion.

As shown in Fig. 80, a plurality of ribs 303 protrude to the inside of the upper side of the filter main body 301, and when the hose is inserted by guiding a hose of a commercially available injection pump at the time of lubrication, the shape is hard to come out. It is. As a countermeasure when the diameter of the hose of a commercially available infusion pump is different, as shown in FIG. 81, the lower end of the rib 310 which protruded inwardly in the shape of an arch is opened, and when a hose is inserted, the rib 310 will open | release. Preferred is an embodiment that widens outward to guide the hose into the filter.

In addition, as shown in FIG. 80, an air hole 305 is formed in the inner inner surface of the flange 301a of the filter main body 301 to avoid the negative pressure state caused by the flow of fuel during refueling, and remains in the oil supply tank. When the fuel or water is removed, the oil supply tank is turned over and discharged to the outside through the air hole 305.

An inner convex rib 304 is formed on the inner bottom surface of the filter main body 301 so that even if the tip of the hose of the infusion pump, which is a commercially available product at the time of lubrication, comes in contact with the bottom, the bottom surface of the filter main body 301 is between the bottom surface of the filter main body 301. The gap is formed so that the fuel flows smoothly.

The mesh portion 302 is about 200 mesh and has fine eyes, and is provided in the side grating portion of the filter main body 301 from the upper flange vicinity to the bottom surface. This mesh part 302 is co-molded at the time of shaping | molding of the filter main body 301. FIG.

FIG. 82 is a sectional view showing Embodiment 2 of filter 300. FIG. As shown, the filter 300a divides the side grid portion of the filter main body 301 into two stages up and down in order to prevent mixing of water from the outside during refueling, and the mesh portion installed in the grid portion is also arranged in two stages up and down. When the upper portion of the mesh portion 303 on the open side is made to pass water or oil, and the lower mesh portion 303 is a portion subjected to water repellent treatment that does not allow water to pass through. The incorporation of water does not directly enter the tank, but collects in the filter to simplify post-treatment of water.

83 is a sectional view showing Embodiment 3 of filter 300. As shown in FIG. As shown in the drawing, the filter 300b includes a side mesh portion 302 installed in a lattice portion formed on the side of the filter main body 301 and a bottom mesh portion 320 provided in an opening formed in the bottom surface of the filter main body 301. The side mesh portion 302 is a portion for passing water or oil, and the bottom mesh portion 320 is a portion for water repellent treatment that does not allow water to pass therethrough. The incorporation does not enter the tank directly, but makes it possible to simplify the post-treatment of the accumulated water in the filter.

As can be seen from the above description, in the present invention, since the fuel tank that temporarily collects the fuel in the lower side of the oil supply tank is abolished and the fuel of the oil supply tank is directly fed to the combustion section, You can refuel without turning over.

In this manner, in the liquid fuel combustion device in which the fuel tank is closed and the fuel of the oil supply tank is directly fed to the combustion unit, air for preventing fuel from flying or leaking through the air hole opened so that the oil supply tank does not become negative pressure. Since the hole blocking means is provided, it is possible to prevent fuel from scattering during transportation of the tank or leakage of fuel during the tank conduction.

In addition, since the oil supply port of the oil supply tank always faces upward, a filter for removing dirt and the like in the fuel can be provided at the oil supply port to prevent dirt and dust from entering the oil supply tank when refueling. have.

As mentioned above, the liquid fuel combustion apparatus which concerns on this invention is suitable for the heating apparatus used in winter and cold districts, for example, a petroleum fan heater, etc. which load a fuel tank from a main body, and load after filling a fuel.

1 is a front partial sectional view of a petroleum fan heater according to Example 1 of the first embodiment of the present invention.

2 is a schematic view of the liquid fuel combustion apparatus.

3 is a schematic view of an oil supply tank.

Fig. 4A is a view showing the main body mounting state of the oil supply tank, and Fig. 4B is a view showing the oil supply cap release blocking state.

5 is a structure of an oil supply joint.

6 is a structural diagram of an oil supply joint and a suction pipe in an oil supply tank.

7 is a structural diagram of a fuel supply cap to which a pressure valve of a fuel supply tank is attached.

8 is a structural diagram of an oil supply joint receiver.

9 is a structural diagram of a burner and a vaporizer.

10 is a structural diagram of a heat pump.

11 is a structural diagram of a cooling fin.

12 is a state diagram of a connecting portion of the oil supply tank.

Fig. 13 is a schematic diagram of an oil supply tank according to Example 2 of the first embodiment of the present invention.

Fig. 14 is a schematic diagram of an oil supply tank according to Example 3 of the first embodiment of the present invention.

Fig. 15 is a state diagram of mounting the main body of the oil supply tank.

Fig. 16 is a perspective view of an oil supply tank according to example 4 of the first embodiment of the present invention.

Fig. 17 is a sectional view of the oil supply port portion in the main body mounting state of the oil supply tank.

Fig. 18 is a sectional view of the oil supply port in the main body mounting state where the oil supply tank is taken out.

Fig. 19 is a sectional view of an oil supply port section showing Example 5 of the first embodiment of the present invention.

20 is a cross-sectional view of an oil supply port section showing Example 6 of the first embodiment of the present invention.

Fig. 21 is a sectional front view of a petroleum fan heater according to the second embodiment of the present invention.

22 is a block diagram of the liquid fuel combustion device.

23 is a schematic view of the oil supply tank.

24 is a perspective view of a connecting portion of the oil supply tank.

25 is a structural sectional view of the oil feed joint.

Fig. 26 is a structural sectional view of the oil return joint.

Fig. 27 is a structural sectional view of the oil feed side connecting means.

Fig. 28 is a structural sectional view of the oil feed joint receiving portion;

Fig. 29 is a structural sectional view of the oil return side connecting means.

30 is a side view of the oil supply tank.

Fig. 31 is a sectional view showing the relationship between the oil supply tank and the mounting table.

32 is a bottom sectional view of the oil supply tank.

Fig. 33 is a perspective view of the drip tray mounting hole of the oil supply tank seen from the inside of the tank;

34 is a structural diagram of the burner and the vaporizer.

35 is a structural diagram of the storage container.

36 is a structural diagram of the cooling fin.

37 is a control circuit diagram of the liquid fuel combustion device.

Fig. 38 is an analog electric circuit diagram.

39 is a perspective view of a main body of a petroleum fan heater according to the third embodiment of the present invention.

40 is a rear perspective view of the petroleum fan heater of FIG. 39;

FIG. 41 is a schematic configuration diagram of the liquid fuel combustion device of FIG. 39. FIG.

FIG. 42 is a front view of the main body of FIG. 39 with a portion of the front plate cut; FIG.

43 is a schematic view of the combustion section and the vaporization section in FIG. 39;

Fig. 44 is a schematic diagram of the vaporizer of Fig. 43;

FIG. 45 is a side sectional view of the combustion section of the main body of FIG. 39; FIG.

46 is a front view of the combustion unit of the main body of FIG. 39;

FIG. 47 is a tank side top view of the main body of FIG. 39; FIG.

48 is a schematic diagram of the oil supply tank of FIG.

FIG. 49 is a schematic view of the connecting joint portion of the oil supply tank of FIG. 48; FIG.

50 is a schematic sectional view showing Embodiment 3 of the air hole closing means in FIG.

Fig. 51 is a schematic sectional view of the air hole closing means when the oil supply tank is mounted on the main body.

FIG. 52 is a schematic sectional view showing Embodiment 4 of the air hole closing means in the figure; FIG.

Fig. 53 is a schematic sectional view of the air hole closing means when the oil supply tank is mounted on the main body.

FIG. 54 is a schematic sectional view showing Embodiment 1 of the air hole closing means in FIG.

FIG. 55 is a schematic sectional view showing Embodiment 2 of the air hole closing means of FIG.

Fig. 56 is a sectional view showing the oil feed side joint in the connecting joint in Fig. 49;

Fig. 57 (a) is an exploded perspective view showing the inlet pipe connection state of the oil feed side joint; Fig. 57 (b) is a sectional view taken along the line A-A in Fig. 57 (a).

FIG. 58 is a sectional view showing the oil return side joint in the connecting joint in FIG. 49; FIG.

Fig. 59 (a) is an exploded perspective view showing a return pipe connection state of the oil return side joint; Fig. 59 (b) is a sectional view taken along the line B-B in Fig. 59 (a).

60 is a schematic diagram of water detection means and fuel amount detection means of the oil supply tank of FIG.

Fig. 61 is a schematic diagram of the oil supply port closing means of the oil supply tank of Fig. 48;

FIG. 62 is a side view of the latch lever portion of FIG. 61; FIG.

FIG. 63 is a front schematic view of the connection of the combustion-side connection joint receiving portion and the electromagnetic pump in FIG. 48; FIG.

Fig. 64 is a schematic top view of the combustion-side connection joint receiving portion and the electromagnetic pump in Fig. 48;

Fig. 65 is a schematic diagram of the connection joint receiving part and the pipe in Fig. 63;

Fig. 66 is a schematic diagram of an oil supply side joint receiver and an air valve in the joint joint receiver of Fig. 63;

FIG. 67 is a schematic view of an oil return side joint receiver in the joint joint receiver of FIG. 63; FIG.

FIG. 68 (a) is a rear view of the air valve of FIG. 66, and FIG. 68 (b) is a schematic sectional view of the air valve and the joint receiving part.

FIG. 69 is a schematic view of the oil supply tank side detection table of FIG. 42;

Fig. 70 is a schematic related view of the oil supply tank side tank mounting detecting means of Fig. 42;

Fig. 71A is a perspective view of the drip tray plate side electrode lever of the detection table of Fig. 69, and Fig. 71B is a mounting state diagram thereof.

FIG. 72 is a mounting state diagram of the tank side electrode lever of the detection table of FIG. 69; FIG.

FIG. 73 is a schematic diagram of the tank mounting detecting means of FIG.

74 is a combustion control block diagram of FIG.

Fig. 75 is a schematic diagram of an oil supply side joint and its joint receiving when the tank is inserted in Fig. 42;

Fig. 76 is a schematic diagram of an oil supply side joint and its joint receiving when the tank is mounted in Fig. 42;

Figure 77 is a schematic diagram of the oil return side joint and its joint receiving when the tank is inserted in Figure 42;

Fig. 78 is a schematic view of the oil return side joint and its joint receiving when the tank is mounted in Fig. 42;

FIG. 79 is a schematic sectional view of the oil supply port portion with a filter in the oil supply tank of FIG. 42; FIG.

80A is a plan view of the filter of FIG. 79, and FIG. 80B is a front view thereof.

81 is a schematic diagram of the filter body upper portion.

82 is a schematic sectional view showing the second embodiment of the filter;

83 is a schematic sectional view showing the third embodiment of a filter;

84 is a partially omitted front sectional view of a conventional petroleum fan heater.

85 is a schematic side cross-sectional view of the petroleum fan heater.

86 is a sectional view of principal parts of the oil supply tank and the socket;

Claims (23)

A fuel supply tank having a fuel supply tank freely mounted therein, a vaporization unit for heating and vaporizing fuel, a burner for burning the vaporized fuel, a oil supply pump for sending fuel from the fuel supply tank to the vaporization unit, and a fuel supply tank. When attached to the main body, a connecting portion for connecting the oil supply tank to the oil supply path leading to the combustion section is provided, and a fuel tank that temporarily collects fuel at the lower side of the oil supply tank is abolished so that the fuel of the oil supply tank is directly fed to the combustion section. Liquid fuel combustion device, An air hole opened in the oil supply tank so that the oil supply tank does not become negative pressure, In order to prevent fuel from flying out or leaking from the air hole, a valve disposed outside the oil supply tank and freely closing and closing the air hole, a tank valve lever equipped with the valve and swinging in an up and down direction, And a movable rod for moving the tank valve lever in the up and down direction, and the movable rod is urged and moved to a member on the main body side when the main body of the oil supply tank is mounted, thereby causing the tank valve lever to swing to the valve opening side, And an air hole closing mechanism for swinging the tank valve lever in the valve closing direction upon separation from the main body. The liquid fuel combustion apparatus according to claim 1, wherein a spring is provided for forcibly swinging said tank valve lever in a valve closing direction upon separation from a main body of an oil supply tank. The liquid fuel combustion device according to claim 1, wherein the air hole closing mechanism is made to function earlier than the connection portion of the oil supply passage when the main body of the oil supply tank is mounted. The liquid fuel combustion apparatus according to claim 1, wherein the movable rod is freely built up and down in a vertical hole formed in a connection portion on the oil supply tank side, and the lower end protrudes below the connection portion. A fuel supply tank having a fuel supply tank freely mounted therein, a vaporization unit for heating and vaporizing fuel, a burner for burning the vaporized fuel, a oil supply pump for sending fuel from the fuel supply tank to the vaporization unit, and a fuel supply tank. When attached to the main body, a connecting portion for connecting the oil supply tank to the oil supply path leading to the combustion section is provided, and a fuel tank that temporarily collects fuel at the lower side of the oil supply tank is abolished so that the fuel of the oil supply tank is directly fed to the combustion section. Liquid fuel combustion device, A filter for removing dirt and the like in the fuel is provided in the oil supply port of the oil supply tank, And a convex portion formed upwardly in a bottom portion of the filter. The liquid fuel combustion apparatus according to claim 5, wherein a hose guide guide of an infusion pump for replenishing fuel into a tank is provided on an inner surface of the filter. The liquid fuel combustion device according to claim 5, wherein in the mesh portion provided on the side of the filter, a mesh portion for allowing water to pass through is disposed in the upper portion, and a mesh portion for not allowing water to pass in the lower portion is disposed. The tank containing chamber in the apparatus main body is provided with an oil supply tank freely received therein, and a combustion unit for combusting the fuel delivered from the oil supply tank, and a fuel tank for temporarily collecting fuel is abolished to directly feed the fuel from the oil supply tank to the combustion unit. Liquid fuel combustion device, A fuel detection unit for detecting fuel is provided on the bottom side of the oil supply tank, The fuel detection unit has a magnet that functions as a detection unit, is provided on a float that moves up and down in accordance with liquid level fluctuation of the fuel in the oil supply tank, and is installed on the tank mounting side opposite to the float, and is used for approaching and separating operation of the magnet. A liquid fuel combustion device having a reed switch to be turned on and off accordingly. The liquid fuel combustion device according to claim 8, wherein a water discharge hole is formed in a bottom surface of the oil supply tank, and the liquid level detection unit is disposed in a lid member that opens and closes the water discharge hole. The liquid fuel combustion apparatus according to claim 8, wherein the float is provided in the oil supply tank, and the reed switch is provided on a tank mount side opposite to the float. The tank containing chamber in the apparatus main body is provided with an oil supply tank freely received therein, and a combustion unit for combusting the fuel delivered from the oil supply tank, and a fuel tank for temporarily collecting fuel is abolished to directly feed the fuel from the oil supply tank to the combustion unit. Liquid fuel combustion device, On the bottom side of the oil supply tank, a water detection unit for detecting water in the oil supply tank is provided, The water detection unit includes a conductive drip tray provided on the bottom of the conductive tank for collecting water, an electrode in contact with the drip tray, an electrode in contact with the oil supply tank, and an insulator electrically insulating the drip tray and the oil supply tank. And detecting the water by the difference between the water and the electrical resistance of the fuel stored in the drip tray. 12. The liquid fuel combustion apparatus as claimed in claim 11, wherein the drip tray is formed separately from the refueling tank and mounted through an electrical insulator in a bottom mounting hole of the refueling tank. The liquid fuel combustion device according to claim 11 or 12, wherein the drip tray is formed of a stainless steel sheet. The liquid fuel combustion device according to claim 13, wherein a non-conductive paint is applied to a bottom portion of the drip tray formed of the stainless steel plate. 13. The liquid fuel combustion apparatus as claimed in claim 12, wherein the electric insulator is composed of a non-conductive packing interposed between the circumferential wall of the hole formed in the bottom surface of the oil supply tank and the circumference of the drip tray. The liquid fuel combustion apparatus according to claim 15, wherein the packing is subjected to a water repellent treatment. The liquid fuel combustion device according to claim 11, wherein a guard member for guarding the drip tray is attached to the oil supply tank side on which the drip tray is mounted. The tank containing chamber in the apparatus main body is provided with an oil supply tank freely received therein, and a combustion unit for combusting the fuel delivered from the oil supply tank, and a fuel tank for temporarily collecting fuel is abolished to directly feed the fuel from the oil supply tank to the combustion unit. Liquid fuel combustion device, The tank mounting detection part which detects the presence or absence of the main body mounting state of the oil supply tank is provided in the bottom surface side of the oil supply tank, And a tank switch detecting unit comprising a micro switch installed on an upper surface of a fuel tank mounting table. 19. The liquid fuel combustion apparatus according to claim 18, wherein a control unit is configured to stop operation when a tank no signal is input from the tank mounting detection unit. 19. The liquid fuel combustion apparatus according to claim 18, wherein a control unit is configured to drive an operation mode in which a carburetor of a combustion unit is combusted when a tank presence signal is input from the tank mounting detection unit. The tank mounting detector for detecting the presence or absence of the main body mounting state of the oil supply tank is provided, and operation is started by input of a tank mounting signal from the tank mounting detection unit and a fuel presence signal from the fuel detection unit. Liquid fuel combustion device to control. The tank mounting detection unit for detecting the presence or absence of the main body mounting state of the oil supply tank is provided, and the operation is stopped by input of a tank mounting signal from the tank mounting detection unit and a fuel free signal from the fuel detection unit. Liquid fuel combustion apparatus. The liquid fuel combustion device according to claim 8, further comprising a display unit for displaying a detection result of the fuel detector, wherein the fuel is notified to the display unit by input of a fuel free signal from the fuel detector.