JP5794109B2 - Oil combustor fuel supply structure - Google Patents

Description

  The present invention relates to a fuel supply structure for a core up-down type oil combustor capable of easily burning a core.

  The core vertical oil combustor consists of a core inner cylinder standing up from the bottom plate of the oil tank and a core outer cylinder attached to the top plate of the oil tank. A core is attached, and a combustion cylinder is disposed on the upper part of the core accommodating cylinder.

  A cartridge tank is detachably attached to the oil tank provided in the frame body, and fuel is supplied to the oil tank. A cap with an open / close valve is attached to the base of the cartridge tank, and the upper surface plate of the oil tank is attached. The oil receiver is attached to the oil tank, and the on-off valve provided on the cap is pushed open by the protrusion provided on the oil receiver, so that the fuel in the cartridge tank flows out and flows into the oil tank from the outlet of the oil receiver. Supplied.

  Then, when the upper end of the lead is protruded from the upper part of the lead receiving cylinder by the lead lifting device and is put into the lower part of the combustion cylinder, and ignited by ignition means such as an ignition heater, the fuel in the oil tank sucked up by the lower end of the lead is discharged. Vaporizes at the upper end of the wick and burns with the supply of air in the combustion cylinder. When the fuel is used for combustion and the oil level in the oil tank drops, air enters the cartridge tank from the on-off valve, Fuel flows out and the oil tank is held at a constant oil level.

  By the way, if the kerosene used in the oil combustor is a modified kerosene, the high molecular weight component contained in the kerosene may be tarned at the upper end of the lead and remain attached to the lead. Even when normal kerosene is used, tar may adhere to the core as the service period becomes longer. When tar adheres to the core, the odor becomes stronger during combustion, or causes ignition failure and fire extinguishing failure.

  Tar adhering to the core can be removed by baking the core at an early stage, and it is desirable to perform regular baking before a large amount of tar adheres to the core. An increasing number of users do not know the knowledge and methods of baking. Also, even if the user understands the necessity of empty baking, recent oil combustors are equipped with a safety device that activates the fire extinguishing device in conjunction with removal of the cartridge tank from the frame. When doing this, it is necessary to transfer the fuel in the cartridge tank to another container and set it again, or wait for the cartridge tank to become empty. I couldn't expect to have an empty-bake.

As a countermeasure for this, an opening / closing means for opening and closing the fuel outlet of the oil receiver is provided, an operation part is provided for enabling the opening / closing means to be operated from outside the frame body, and the opening / closing means is set to the closed position by operating the operation part. Then, the open / close means closes the fuel outlet and stops the fuel supply to the oil tank, so that it can be easily baked even if the fuel is still in the cartridge tank. We can expect regular empty baking work. (See Patent Document 1).
JP 2008-249295 A

However, in the above-mentioned Patent Document 1, the opening / closing means is brought into close contact with the fuel outlet of the oil receiver and closed, and packing is required to improve the adhesion between the fuel outlet and the opening / closing means. For this reason, there is a gap between the fuel outlet and the opening / closing means, for example, the packing deteriorates due to long-term use or dust in the fuel is caught between the fuel outlet and the opening / closing means of the oil receiver. As a result, it becomes impossible to stop the fuel supply, and it becomes impossible to burn the fuel. In this case, fuel is supplied even if the open / close means is set to the empty burning combustion position, but there is a possibility that the combustion may continue without being noticed.
Fried cores are often required after a certain period of use, but as the service period is extended, the packing is likely to deteriorate and dust is likely to be mixed in. There were still problems and it was not yet put into practical use.

  The present invention solves the above-described problems. In the frame 1, an oil tank 2, an inner core cylinder 3 standing from the bottom plate of the oil tank 2, and an outer core attached to the upper surface plate 2b of the oil tank 2 are provided. A cylinder 4, a core 6 that is vertically movable in a gap of a core housing cylinder 5 constituted by the core inner cylinder 3 and the core outer cylinder 4 and that has a lower end reaching the fuel in the oil tank 2 is provided. An oil receiver 7 is provided on the upper surface plate 2 b of the tank 2 toward the oil tank 2, and a cap 9 having an opening / closing valve 9 a is attached to a cap of the cartridge tank 8 that supplies fuel to the oil tank 2. The cap 9 is attached to the oil receiver 7, and the projection 7 a provided from the bottom surface of the oil receiver 7 pushes open the opening / closing valve 9 a of the cap 9 to supply fuel from the cartridge tank 8 into the oil tank 2. In the oil combustor that holds the inside on a constant oil level, the oil receiver 7 A fuel outlet 7b is provided on the bottom surface or side surface around the protrusion 7a, and a bottomed cylindrical movable body 10 is provided so as to surround the bottom surface and side surface of the oil receiver 7. The movable body 10 is provided with the oil receiver 7. A predetermined space is formed between the bottom surface and the side surface of the movable body 10, a fuel passage 10 a is provided on the side surface of the movable body 10, and the movable body 10 is movable in the vertical direction along the side surface of the oil receiver 7. A normal combustion position in which the fuel passage port 10a is positioned lower than the on-off valve 9a of the cartridge tank 8 mounted on the oil receiver 7, and the fuel passage port 10a is located higher than the on-off valve 9a. The fuel sent from the cartridge tank 8 through the fuel outlet 7b of the oil receiver 7 to the movable body 10 is transferred to the movable body 10 when the movable body 10 is in the normal combustion position. OK When the movable body 10 is supplied to the oil tank 2 through the fuel passage port 10a in the body 10 and the movable body 10 is in the empty burning combustion position, the oil level in the movable body 10 is lower than the fuel passage port 10a. It is formed in the position, The fuel supply to the oil tank 2 is interrupted | blocked, It is characterized by the above-mentioned.

  In addition, the movable body 10 is partially exposed to the outside of the frame body 1 and has an operation unit 11 that can switch the movable body 10 from the outside of the frame body 1 between the normal combustion position and the burned combustion position. Since it is provided, the fuel supply from the cartridge tank 8 to the oil tank 2 can be cut off even when the cartridge tank 8 is mounted on the frame 1, and the core can be easily baked.

  Further, the movable body 10 is provided with a locking piece 12, the oil receiver 7 is provided with a locking guide portion 13 that engages with the locking piece 12, and the locking piece 12 is connected to the locking guide portion 13. Since the movable body 10 is attached so as to be movable in the vertical direction and the movable body 10 is held in the normal combustion position and the unburned combustion position, the locking means 14 is formed. It has become possible to move smoothly and easily switch between the normal combustion position and the empty burning combustion position.

  Further, the locking piece 12 is formed by a plurality of protrusions 12 a protruding from the upper surface of the movable body 10, and a flange portion 15 that increases the outer diameter is formed on the outer peripheral surface of the oil receiver 7. A plurality of recesses 13a are formed on the lower surface of the flange 15 so as to face the lower surface of the portion 15 and the upper end of the projection 12a, and the height of the projection 15a is changed. The locking guide portion 13 is formed by the flange 15 and the recess 13a. A spring means 14a is provided between the oil receiver 7 and the movable body 10 to press the protrusion 12a against the lower surface of the flange portion 15 to form the locking means 14, and the movable body 10 has the protrusion 12 a moves along the locking guide portion 13 while contacting the lower surface of the flange portion 15, and is rotatably attached along the side surface of the oil receiver 7 in a circumferential manner. The movable when facing the recess 13a 10 is moved upward so that the protrusion 12a is positioned in the recess 13a, and the fuel passage port 10a of the movable body 10 is connected to the opening / closing valve of the cartridge tank 8 at a position where the protrusion 12a does not face the recess 13a. When the protrusion 12a is positioned in the recess 13a, the fuel passage port 10a is set so as to be positioned higher than the on-off valve 9a of the cartridge tank 8, and the movable body 10 Since the normal combustion position and the non-burning combustion position are switched by the rotation operation, the switching operation between the normal combustion position and the non-burning combustion position can be easily performed.

In the present invention, a bottomed cylindrical movable body 10 is provided so as to surround the bottom surface and the side surface of the oil receiver 7 and a predetermined space is formed between the oil receiver 7 and the movable body 10 is an oil receiver. 7 moves up and down along the side surface and can be switched between a normal combustion position and an empty burning combustion position. When the movable body 10 is set at the normal combustion position, the fuel passage port 10a provided on the side surface of the movable body 10 is positioned lower than the on-off valve 9a of the cartridge tank 8 attached to the oil receiver 7, while When set to the combustion position, the fuel passage port 10 a of the movable body 10 is positioned higher than the on-off valve 9 a of the cartridge tank 8.
Therefore, the fuel that has flowed out of the cartridge tank 8 and sent to the movable body 10 can be supplied to the oil tank 2 through the fuel passage 10a at the normal combustion position, and can be supplied from the cartridge tank 8 at the empty combustion position. The fuel that has flowed out and sent to the movable body 10 forms an oil level at a position lower than the fuel passage port 10a and stops the flow of fuel from the cartridge tank 8, so that the supply of fuel to the oil tank 2 is shut off. be able to.

With this configuration, the core 6 can be baked while the cartridge tank 8 containing the fuel is mounted, and the cartridge tank 8 can wait until the cartridge tank 8 becomes empty, or the fuel in the cartridge tank 8 can be discharged. It is no longer necessary to transfer to another container, and it can be easily baked at any time.
In addition, the fuel outlet 7b of the oil receiver is not directly closed as in the prior art, but the fuel supply can be stopped by the positional relationship between the oil surface formed in the movable body 10 and the fuel passage 10a. Therefore, there is no concern that the fuel supply cannot be cut off due to dust trapping or deterioration of the packing, and the fuel can be cut off reliably by setting the position of the movable body 10 to the empty burning combustion position.

In addition, the movable body 10 is provided with an operation portion 11 that is partially exposed outside the frame 1, and by operating the operation portion 11, the movable body 10 can be easily moved from the outside of the frame 1 to the normal combustion position. Since it is possible to switch between the burning combustion positions, it is possible to perform empty baking with a simple operation.
In addition, the presence of the operation unit 11 makes it easy for the user to understand the necessity of baking, and the user can expect to periodically burn the core, which can prolong the life of the core and product. It became.

  Further, when the locking piece 12 provided on the movable body 10 is engaged with the locking guide portion 13 provided on the oil receiver 7 and the movable body 10 is moved in the vertical direction, the locking piece of the movable body 10 is the oil receiver. 7, the movable body 10 can be moved smoothly, and the normal combustion position and the unburned combustion position can be easily switched. The movable body 10 is provided with a locking means 14 for locking the locking piece 12 when the movable body 10 is set at the normal combustion position and the idling combustion position, and the movable body 10 is held at the normal combustion position and the idling combustion position. Therefore, the movable body 10 can be reliably set at the empty burning combustion position.

The movable body 10 is rotatably attached along the side surface of the oil receiver 7, and the locking piece 12 of the movable body 10 is constituted by a plurality of protrusions 12 a protruding from the upper surface of the movable body 10. The stop guide portion 13 is composed of a flange portion 15 formed on the outer peripheral surface of the oil receiver 7 and a concave portion 13a provided on the lower surface of the flange portion 15, and a spring means 14a is provided between the oil receiver 7 and the movable body 10, The protrusion 12a is pressed against the lower surface of the flange 15 to be in contact therewith. When the movable body 10 rotates in this state, the protrusion 12a of the movable body 10 moves along the lower surface of the flange portion 15, and the vertical position of the movable body 10 changes when moving into the recess 13a. It was possible to switch between the position and the empty burning combustion position, and the switching operation could be reliably performed with a simple operation.
Further, since the movable body 10 is pressed against the flange portion 15 by the spring means 14a, the movable body 10 has a resistance in the rotation direction of the movable body 10, and the movable body 10 is reliably held at the normal combustion position or the empty burning combustion position. can do.

It is principal part sectional drawing in the oil tank which shows the state at the time of empty burning combustion and normal combustion in the Example of this invention. It is principal part sectional drawing in the oil tank which shows the state at the time of the empty burning combustion and normal combustion which show the other Example of this invention. It is a top view which shows the state at the time of empty burning combustion and normal combustion in the Example shown in FIG. It is a front view of the oil combustor of this invention. It is a principal part front view of the oil combustor provided with the fuel supply structure of the Example of this invention.

  The present invention will be described with reference to the embodiments shown in the drawings. Reference numeral 1 denotes a frame of an oil combustor, 2 denotes an oil tank for storing fuel installed in the frame 1, and 3 denotes a core cylinder standing from a bottom plate of the oil tank 2. 2b is an upper surface plate of the oil tank 2, 4 is a core outer cylinder attached to the upper surface plate 2b of the oil tank 2, 5 is a core housing cylinder composed of the core inner cylinder 3 and the core outer cylinder 4, and 6 is a core housing cylinder. 5 is a core that is mounted in the gap 5 so as to be movable up and down. The lower part of the core 6 reaches the fuel in the oil tank 2, and the fuel in the oil tank 2 is sucked up by the lower part of the core 6 and supplied above the core 6. ing.

  16 is a combustion cylinder placed on the core housing cylinder 5, and 17 is a core lifting device attached to the outside of the core housing cylinder 5. The core lifting apparatus 17 raises the core 6 and houses the tip of the core 6 in the core housing. When the core 6 is ignited by an ignition device (not shown) that protrudes from the cylinder 5 to the lower part of the combustion cylinder 16, the fuel in the oil tank 2 sucked up at the lower part of the core 6 starts to combust at the upper part of the core 6 and is generated The combustion gas completes combustion in the combustion cylinder 16.

  8 is a cartridge tank that is detachably mounted in the frame 1 and supplies fuel to the oil tank 2, 9 is a cap that is detachably provided on the base of the cartridge tank 8, and 9 a is an opening / closing unit that is built into the cap 9. It is a valve. 7 is a bottomed cylindrical oil receiver attached to the opening of the upper surface plate 2b of the oil tank 2, 7a is a protrusion formed upward from the center of the bottom surface of the oil receiver 7, and 7b is provided on the bottom surface around the protrusion 7a. Fuel outlet.

  When the cap 9 of the cartridge tank 8 is attached to the oil receiver 7 with the cap 9 facing downward, the projection 7a pushes open the on-off valve 9a and air flows into the cartridge tank 8, and instead the fuel in the cartridge tank 8 flows out and oil When the oil tank 2 is supplied to the oil tank 2 from the fuel outlet 7b of the receiver 7 and the oil level in the oil tank 2 rises and reaches the tip of the on-off valve 9a, the air cannot flow into the cartridge tank 8 and the fuel outflow stops. . When fuel is used by combustion and the oil level in the oil tank 2 is lowered, air flows into the cartridge tank 8 from the on-off valve 9a, and the fuel flows out instead.

  When the lead 6 is lowered by the lead lifting device 17 during combustion of the oil combustor and the tip of the lead 6 is accommodated in the lead accommodating cylinder 5, the flame at the tip of the lead 6 is drawn into the lead accommodating cylinder 5. The amount of petroleum gas that evaporates from the wick 6 decreases, the temperature gradually decreases while burning the unburned gas, and the flame remaining above the wick 6 gradually decreases and extinguishes. In addition, although not shown, an automatic fire extinguishing device that automatically lowers the core 6 and quickly extinguishes when an earthquake occurs or the oil combustor falls is provided.

  In addition, recent oil combustors are equipped with a safety device that activates an automatic fire extinguishing device when the cartridge tank is removed from the frame for refueling. When the cartridge tank is removed during use of the oil combustor, the fire extinguisher must be extinguished. It has become. If you forget to close the cap of the cartridge tank after refueling or if it is insufficiently closed, there is a risk that the cap will come off when the cartridge tank is attached to the frame, causing fuel to overflow and hit the oil combustor. Since the combustor is always extinguished, a fire accident can be prevented.

  By the way, if the kerosene which is a fuel is a modified kerosene, the tar component contained in kerosene cannot be burned in the core up-down type oil combustor, and may be tarred and remain at the tip of the core 6. Even when normal kerosene is used, the kerosene vapor vaporized from the wick 6 may not be combusted in the combustion cylinder 16 and may be condensed and returned to the wick 6. Once kerosene vaporized and condensed, the kerosene is denatured. Therefore, it becomes tar and adheres to the core 6 while it is repeatedly burned and extinguished.

  The tar adhering to the lead 6 causes odor at the time of ignition or extinguishing, and if the amount of tar adhering to the tip of the lead 6 increases as it continues to be used, the lead 6 and the lead containing cylinder 5 The gap becomes narrow and hinders the up / down operation of the lead, and causes a trouble such that the lead 6 stops in the middle of lowering the core and cannot be extinguished.

  When tar adheres to the wick 6 as described above, tar can be removed if the wick is baked at a stage where the amount of tar is small. Since the fire extinguishing device is activated, when empty baking is performed, the combustion continues until the fuel in the cartridge tank 8 becomes empty or the fuel in the cartridge tank 8 is transferred to another container such as a plastic tank and then becomes empty. In addition, it is necessary to mount the cartridge tank 8 on the frame body 1 and burn it, so that the baking operation is troublesome.

  For this reason, conventionally, the fuel outlet of the oil receiver is directly closed by the opening / closing means, so that the fuel supply from the cartridge tank to the oil tank is shut off and the cartridge tank containing the fuel remains empty even when it is mounted on the frame. Although a structure that can be baked is realized, this conventional structure requires a packing to improve the adhesion between the opening and closing means and the fuel outlet, and the opening and closing means when the packing is deteriorated or dust mixed in the fuel is caught A gap is formed between the fuel outlet and the fuel outlet, and the supply of fuel cannot be shut off. For practical use, it has been a challenge to realize a structure that can shut off the fuel reliably.

  The present invention solves the above-mentioned problem. Reference numeral 10 denotes a bottomed cylindrical movable body arranged so as to surround the bottom surface and the side surface of the oil receiver 7, and the movable body 10 extends along the outer peripheral surface of the oil receiver 7. It is attached so that it can move up and down. Reference numeral 10a denotes a large number of fuel passage openings provided on the outer peripheral surface of the movable body 10, and the position of the fuel passage opening 10a is changed by moving the movable body 10 up and down, and the movable body 10 is moved upward. Then, the fuel passage port 10a is positioned higher than the tip position of the opening / closing valve 9a of the cartridge tank 8 attached to the oil receiver 7, and when the movable body 10 is moved downward, the fuel passage port 10a is moved from the tip position of the opening / closing valve 9a. It has a low position. And when the movable body 10 is in a high position, it is set as an empty burning combustion position, and when the movable body 10 is in a low position, it is set as a normal combustion position.

  In the above configuration, when the movable body 10 is installed at the normal combustion position, the fuel flowing out from the on-off valve 9a of the cartridge tank 8 flows from the fuel outlet 7b of the oil receiver 7 to the movable body 10 and moves to the movable body 10. When the oil level rises and reaches the fuel passage 10a, the fuel overflows from the movable body 10 and is supplied into the oil tank 2. Then, the oil level of the oil tank 2 rises above the fuel passage port 10a of the movable body 10, and when the oil level reaches the tip of the on-off valve 9a of the cartridge tank 8, air cannot flow into the cartridge cartridge tank 8, Fuel spillage stops. When the fuel in the oil tank 2 is used by combustion, the oil level in the oil tank 2 becomes lower than the tip of the on-off valve 9a, and when air flows into the cartridge tank 8, the cartridge tank 8 is replaced. Fuel will flow out.

  On the other hand, when the movable body 10 is changed from the normal combustion position to the empty burning combustion position, the fuel passage port 10a of the movable body 10 is positioned higher than the oil level position at the tip of the on-off valve 9a of the cartridge tank 8. The fuel accumulated at the bottom of 10 does not reach the height of the fuel passage 10 a of the movable body 10, and no fuel is supplied to the oil tank 2. Even if combustion is continued in this state and the fuel in the oil tank 2 is used, the fuel accumulated in the movable body 10 does not flow into the oil tank 2 and the oil level in the movable body 10 does not change. The outflow of fuel from the tank 8 remains stopped, and if the combustion is continued as it is, the fuel in the oil tank 2 disappears and the core can be baked.

  The present invention is a review of the method of shutting off the supply of fuel from the cartridge tank 8 to the oil tank 2, and in the conventional configuration in which the fuel outlet of the oil receiver is directly closed by an opening / closing member, Although there was a problem of incomplete closing of the outlet due to dust, in the configuration of the present invention, the movable body 10 does not contact the fuel outlet 7b of the oil receiver 7, and the position of the fuel passage 10a of the movable body 10 is changed. Thus, no packing is required, and the problem of poor closing due to dust trapping does not occur at all, and the supply of fuel to the oil tank 2 can be reliably shut off.

  Reference numeral 11 denotes an operation unit connected to the movable body 10 arranged so that a part thereof is exposed to the outside of the frame body 1 from an opening provided in the frame body 1, and 11 a denotes an operation lever exposed to the outside of the frame body 1 of the operation unit 11. Yes, by operating the operation lever 11a from the outside of the frame body 1, the movable body 10 can move up and down to switch between the normal combustion position and the unburned combustion position. For this reason, the core 6 can be easily baked by simply switching the operation unit 11 without taking out the cartridge tank 8 containing the fuel from the frame 1, and the operation unit 11 is normally burned after the calcination combustion. It can be used normally only by returning it to the position, and the handleability can be improved.

  Reference numeral 12 denotes a locking piece formed on the movable body 10, reference numeral 13 denotes a locking guide portion with which the locking piece 12 provided on the oil receiver 7 engages, and reference numeral 14 denotes a movable body 10 held in a normal combustion position and an empty burning combustion position. The locking means 12 locks the locking piece 12 so that the movement of the movable body 10 is restricted by the locking piece 12 moving along the locking guide portion 13. Therefore, the movable body 10 can be always held at the normal combustion position or the empty burning combustion position.

As a specific embodiment, in FIG. 1, the locking guide portion 13 is configured by a rail-like protrusion 13 b formed on the outer peripheral surface of the oil receiver 7 and extending in the vertical direction, and the locking piece 12 is formed on the inner peripheral surface of the movable body 10. The engaging groove 12b is formed, and the engaging groove 12a is fitted with the rail-like protrusion 13b, and the movable body 10 moves up and down along the rail-like protrusion 13b. Further, 10b is a pair of locking pins provided on the outer peripheral surface of the movable body 10, 11b is a support shaft serving as the center of rotation of the operation portion 11, and 11c is the engagement portion formed at the inner end of the frame 1 of the operation portion 11. When the operating portion 11 is movable around the support shaft 11a, the movable body 10 is moved up and down via the connecting portion 11c and the locking pin 10b.
11d is a hemispherical protrusion provided on the side surface of the operation portion 11, 14b is a locking hole provided in the locking means 14 with which the protrusion 11d of the operation portion 11 is fitted. Arranged in two stages, the upper stage is set to the normal combustion position, and the lower stage is set to the empty burning combustion position.

  The locking means 14 of the embodiment is made of a synthetic resin or an elastic member. When the operating portion 11 is moved from a state in which the protruding portion 11d is fitted in the locking hole 14b, the protruding portion 11d is detached from the locking hole 14b. When the locking means 14 is deformed and spreads out, when the operating portion 11 is moved and the protrusion 11d is fitted again into the locking hole 14b, the expanded locking means 14 returns to the original position. The position of the operation unit 11 can be held. With this configuration, when the movable body 10 is in the normal combustion position, the protrusion 11d of the operation portion 11 is fitted in the upper locking hole 14b of the locking means 14 so that the burning is performed. When the operation lever 11a outside the frame 1 of the operation unit 11 is pushed downward, the projection 11d is detached from the upper locking hole 14b, and the operation unit 11 rotates about the support shaft 11b. When the portion 11c moves up and the locking pin 10b is lifted to move the movable body 10 up and the movable body 10 moves to the empty burning combustion position, the projection 11d of the operation portion 11 enters the lower locking hole 14b. Since the fitting is performed, the movable body 10 is held at the burning position, and the core 6 can be burned.

  When the burn-in combustion is completed, when the operation lever 11a of the operation unit 11 is lifted upward, the projection 11d is disengaged from the locking hole 14b and the operation unit 11 rotates about the support shaft 11b, so that the movable body 10 is lowered. When moved to the normal combustion position, the protrusion 11d of the operating portion 11 engages with the upper hole 14b, so that the movable body 10 can be held at the normal combustion position. For this reason, the movable body 10 moves up and down smoothly along the rail-like protrusion 13b of the oil receiver 7, and the movable body 10 can be reliably held in either the empty burning combustion position or the normal combustion position. Switching between burning and burning is now easy and reliable.

  In another embodiment of the present invention shown in FIG. 2, 12a is a plurality of protrusions arranged at regular intervals upward from the upper surface of the movable body 10, and 15 is an outer formed on the outer peripheral surface of the oil receiver 7. It is a collar part which enlarges a diameter dimension, and the protrusion 12a of the movable body 10 and the lower surface of the collar part 15 are facing. Reference numeral 13 a denotes a plurality of recesses arranged at regular intervals on the lower surface of the flange part 15, and the locking guide part 13 is constituted by the recesses 13 a and the flange part 15.

  Reference numeral 18 denotes a bottomed cylindrical movable body holder disposed so as to surround the bottom surface and side surface of the movable body 10, 18a denotes an opening provided on the bottom surface of the movable body holder 18, and the movable body 10 includes the oil receiver 7 and the movable body holder. 18 between the lower side surface of the movable body 10 and the lower side surface of the movable body holder 18, and between the bottom surface of the movable body 10 and the bottom surface of the movable body holder 18. A gap is formed, and the fuel flowing out from the fuel passage port 10a of the movable body 10 flows through the gap and is supplied to the oil tank 2 from the opening 18a. A spring means 14a is disposed between the bottom surface of the movable body 10 and the bottom surface of the movable body holder 18 and urges the movable body 10 upward. The projection 12a of the movable body 10 is applied by the force of the spring means 14a. Is pressed against the lower surface of the flange 15. In addition, as shown in FIG. 2, the protrusion 12 a and the recess 13 a are formed with inclined surfaces formed in the rotational direction of the movable body 10.

In the above configuration, when the movable body 10 is rotated in the circumferential direction of the oil receiver 7, the protrusion 12 a moves while sliding on the lower surface of the flange 15 with the upper surface of the protrusion 12 a contacting the lower surface of the flange 15. To do. When the position of the protrusion 12a reaches the position of the recess 13a formed on the lower surface of the flange 15, the protrusion 12a moves into the recess 13a while sliding on the inclined surface of the recess 13a. 10 moves upward.
Further, when the movable body 10 is rotated in the reverse direction from the state in which the projection 12a is fitted in the recess 13a, the projection 12a moves while sliding on the inclined surface of the recess 13a, and the movable body 10 resists the force of the spring means 14a. The projection 12a moves downward and moves away from the recess 13a and moves to the lower surface of the flange 15. The vertical position of the movable body 10 can be changed by rotating the movable body 10.
Thus, when the protrusion 12a is in contact with the lower surface of the flange 15, the fuel passage port 10a is in the normal combustion position so as to be lower than the on-off valve 9a, while the protrusion 12a is positioned in the recess 13a. When it is, the fuel passage port 10a is set higher than the on-off valve 9a to set the empty burning combustion position.

With this configuration, it is possible to switch between normal combustion and idling combustion only by sliding the operation unit 11 in the horizontal direction, so that switching can be surely performed with a simple operation.
Further, since the spring means 14a presses the movable body 10 against the flange 15 and the force becomes a resistance when the movable body 10 rotates, the movable body 10 easily moves when the operating portion 11 is accidentally touched. The movable body 10 can be reliably held at the normal combustion position and the empty burning combustion position.

  FIG. 2 shows a specific embodiment of the operation unit 11, 19 is an operation plate extending from the movable body 10, and the operation plate 19 is connected to the end of the operation lever 11 a inside the frame 1. When 11a moves in the front-rear direction, the movable body 10 rotates in the lateral direction. The operation lever 11a is biased to the front side of the frame body 1 by a spring, and when the operation lever 11a is pushed into the frame body 1, the lock mechanism is locked and held at that position. Moreover, if it pushes in the frame 1 inside in the pushed position, a lock will be cancelled | released and it will return outside by the force of a spring, and the operation lever 11a will drive in the front-back direction.

  As described above, since the operation lever 11a is limited only to the movement in the front-rear direction, the movable body 10 is not moved more than necessary, and the switching between the normal combustion position and the empty burning combustion position is facilitated. Moreover, since the space where the operation lever 11a is exposed to the front plate of the frame 1 can be reduced, the design of the product is hardly damaged.

DESCRIPTION OF SYMBOLS 1 Frame 2 Oil tank 2b Top plate 3 Core inner cylinder 4 Core outer cylinder 5 Core accommodating cylinder 6 Core 7 Oil receiver 7a Projection 7b Fuel outlet 8 Cartridge tank 9 Cap 9a Open / close valve 10 Movable body 10a Fuel passage 11 Operation part 12 Locking piece 13 Locking guide part 13a Recessed part 14 Locking means 14a Spring means 15 Gutter part

Claims (4)

In the frame (1), there are an oil tank (2), a core inner cylinder (3) erected from the bottom plate of the oil tank (2), and an outer core attached to the top plate (2b) of the oil tank (2). A cylinder (4), a core inner cylinder (3), and a core outer cylinder (4) are mounted in a gap between a core housing cylinder (5) so as to be movable up and down, and the lower end serves as fuel in the oil tank (2). With a reachable core (6),
The upper surface plate (2b) of the oil tank (2) is provided with an oil receiver (7) toward the oil tank (2), and a nozzle of the cartridge tank (8) for supplying fuel to the oil tank (2) A cap (9) having an on-off valve (9a) is attached, the cap (9) of the cartridge tank (8) is mounted on the oil receiver (7), and a protrusion (7a) provided from the bottom surface of the oil receiver (7) In an oil combustor that pushes and opens the on-off valve (9a) of the cap (9) to supply fuel from the cartridge tank (8) into the oil tank (2) and keep the oil tank (2) at a constant oil level. ,
A fuel outlet (7b) is provided on the bottom or side surface around the protrusion (7a) of the oil receiver (7),
A bottomed cylindrical movable body (10) is provided so as to surround a bottom surface and a side surface of the oil receiver (7), and the movable body (10) is disposed between the bottom surface and the side surface of the oil receiver (7). A predetermined space is formed, a fuel passage port (10a) is provided on a side surface of the movable body (10), and
The movable body (10) is attached so as to be movable in the vertical direction along the side surface of the oil receiver (7), and the cartridge tank (8) in which the fuel passage port (10a) is mounted on the oil receiver (7). ) And a normal combustion position located lower than the on-off valve (9a), and an empty burning combustion position where the fuel passage port (10a) is located higher than the on-off valve (9a),
The fuel sent from the cartridge tank (8) to the movable body (10) through the fuel outlet (7b) of the oil receiver (7) is movable when the movable body (10) is in the normal combustion position. Passed through the fuel passage opening (10a) in the body (10) and supplied to the oil tank (2),
When the movable body (10) is in the empty burning combustion position, the oil level in the movable body (10) is formed at a position lower than the fuel passage port (10a), and fuel to the oil tank (2) is formed. A fuel supply structure for an oil combustor, characterized in that the supply is cut off.   A part of the movable body (10) is exposed to the outside of the frame (1), and the movable body (10) is switched between the normal combustion position and the burned combustion position from outside the frame (1). The fuel supply structure for an oil combustor according to claim 1, further comprising an operation section (11) capable of operating. The movable body (10) is provided with a locking piece (12), and the oil receiver (7) is provided with a locking guide portion (13) with which the locking piece (12) is engaged. 12) is moved along the locking guide portion (13), and the movable body (10) is attached to be movable in the vertical direction,
The fuel supply structure for an oil combustor according to claim 1 or 2, wherein a locking means (14) for holding the movable body (10) at a normal combustion position and an empty burning combustion position is formed. The locking piece (12) is formed by a plurality of protrusions (12a) protruding on the upper surface of the movable body (10),
A flange portion (15) having an increased outer diameter is formed on the outer peripheral surface of the oil receiver (7). The lower surface of the flange portion (15) and the upper end of the protrusion (12a) are opposed to each other, and the flange portion (15 ) Is formed with a plurality of recesses (13a) whose height is changed, and the locking guide portion (13) is constituted by the flange portion (15) and the recess portion (13a),
A spring means (14a) is provided between the oil receiver (7) and the movable body (10) to press the protrusion (12a) against the lower surface of the flange (15) to form the locking means (14). And
The movable body (10) moves along the locking guide portion (13) while the protrusion (12a) is in contact with the lower surface of the flange portion (15), along the side surface of the oil receiver (7). It is rotatably attached to a circumferential method, and when the projection (12a) faces the recess (13a), the movable body (10) moves upward to cause the projection (12a) to move to the recess (13a). 13a)
In a position where the protrusion (12a) does not face the recess 13a, the fuel passage port (10a) of the movable body (10) is positioned lower than the on-off valve (9a) of the cartridge tank (8), and the protrusion (12b ) Is positioned in the recess 13a, the fuel passage port (10a) is set to be positioned higher than the on-off valve (9a) of the cartridge tank (8),
The fuel supply structure for an oil combustor according to claim 3, wherein the normal combustion position and the idling combustion position are switched by a rotating operation of the movable body (10).

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