JP4581565B2 - Oil combustor core lifting device - Google Patents

Description

  The present invention relates to a structure of a core lifting device for performing a core lifting operation of a core lifting oil combustor.

  The core up / down type oil combustor is used to rotate the core up / down axis by operating the dial / lever type operating device, and the core up / down operation. The wick that has moved up is ignited and burned. And if a core up-and-down axis | shaft rotates in a core lowering direction during combustion, a core will move down and it will extinguish a fire.

  In addition, recent core lifting devices are equipped with a structure that automatically extinguishes by vibrations such as earthquakes, and when the core vertical axis is rotated in the direction of core lifting and the core is raised to the center lifting position, the core is lowered by a return spring. The rotating plate that rotates in the direction and the stopper that operates on the seismic device are engaged to maintain the rotational force of the rotating plate. The seismic device detects the vibration and moves the stopper. When the rotating plate is detached from the rotating plate, the rotating plate is driven in the core lowering direction by the return spring, and the rotating plate rotates the core vertical axis in the core lowering direction via the locking portion to lower the core.

In addition, the vertical axis of the core is provided so that it can rotate independently with the rotating plate and stopper engaged, and the core height can be adjusted by operating the vertical axis of the core to adjust the heating power or during normal operation. Can be extinguished (see Patent Document 1).
Japanese Utility Model Publication No. 61-19286

  In the above-described core lifting device, if the bearing supporting the core vertical shaft is brought into close contact with the core vertical shaft, the resistance during rotation of the core vertical shaft increases, which hinders the rotation of the core vertical shaft, and is seismic. However, if a clearance is provided between the bearing and the upper and lower shafts so that the upper and lower shafts can rotate, the weight of the core that sucks up the fuel will cause the cores to fall. In some cases, the vertical axis rotates in the core lowering direction and the core height is lowered.

  For this reason, conventionally, a ring-shaped packing is attached to the rotation plate, and the rotation of the core vertical axis is regulated by bringing the packing into close contact with the side surface of the core vertical axis, and the rotation plate is engaged with the stopper. In this state, the upper and lower shafts are prevented from rotating in the direction of lowering the core, and at the time of automatic fire extinguishing due to the operation of the seismic sensor, the rotating plate and the upper and lower shafts rotate together. Although it can be surely extinguished without obstruction, this structure requires packing and parts for fixing the packing to the rotating plate, which increases the number of parts, complicates the structure, and facilitates assembly work. There is a drawback that it takes time and effort, resulting in high costs.

  In addition, if the packing deteriorates due to wear due to rotation of the core vertical axis or adhesion of dust or oil, the rotation of the core vertical axis cannot be restricted, and the proper core height cannot be maintained. There was a case.

  The present invention solves the above-described problems, and is provided with a core vertical shaft 1 for performing a core vertical operation, and a core vertical shaft 1 that is pivotably mounted around the core vertical shaft 1 and when the core vertical shaft 1 is rotated in the center-up direction. A rotation plate 3 driven by the locking portion 2, a return spring 4 attached to the rotation plate 3 that drives the core vertical shaft 1 in the core lowering direction via the locking portion 2, and rotation by the return spring 4 In the oil combustor provided with the stopper 5 for holding the rotational force of the plate 3 and provided so that the core vertical shaft 1 can be rotated independently with the rotating plate 3 engaged with the stopper 5. 3, a cylindrical body 3a having an inner diameter larger than the outer diameter of the core vertical shaft 1 is formed. A plurality of independent protrusions 3b are formed at the tip of the cylinder 3a, and the tip of the protrusion 3b is formed. Is formed with a protrusion 3c toward the center, and the tip position of the protrusion 3c is set smaller than the outer diameter of the core vertical shaft 1, It is characterized in that the front end of the output unit 3c is protrusion 3c spread upon insertion of the core vertical shaft 1 into close contact with the side surface of the core vertical shaft 1.

  Further, the core vertical shaft 1 is formed with a groove portion 1a outside the tip of the protruding portion 3b of the rotating plate 3, and the groove portion 1a is fitted with a ring-shaped retaining member 6 provided with an opening 6a in part. The retainer 6 is in close contact with the groove 1a of the core vertical shaft 1, and the rotating plate 3 is formed with an engaging piece 3d extending forward from the protruding portion 3b. And the opening 6a of the retainer 6 are engaged with each other, so that the rotation of the core vertical shaft 1 is regulated by the protrusion 3c of the rotation plate 3 and the retainer 6 so that the core vertical shaft 1 is reliably secured. It can be held at the center raising position.

  A bearing 8 is attached to the periphery of the through hole 7 a on the side wall of the oil tank 7 through which the core vertical shaft 1 passes, and a cylindrical portion 8 a through which the core vertical shaft 1 is inserted is provided outside the oil tank 7. The cylindrical body 3a of the rotating plate 3 attached to the core vertical shaft 1 is provided so as to project, and the outer diameter of the cylindrical portion 8a of the bearing 8 and the inner diameter of the cylindrical body 3a of the rotating plate 3 are matched. Since the rotating plate 3 is supported so as to be rotatable about the bearing 8, the rotating plate 3 can be easily attached and the core vertical shaft 1 can be rotated smoothly. It became moving.

  In the present invention, a plurality of independent protruding portions 3b are provided at the tip of a cylindrical body 3a formed on the rotating plate 3, and a protruding portion 3c is formed at the tip of the protruding portion 3b inwardly. When the shaft 3 is inserted into the core vertical shaft 1, the tip of the protrusion 3 b spreads and the protrusion 3 c comes into close contact with the core vertical shaft 1, and the protrusion 3 c presses the core vertical shaft 1 to rotate the core vertical shaft 1. Because it regulates, separate parts such as packing are not required, the number of parts can be reduced, and only the rotating plate 3 is attached to the core vertical shaft 1, so that the work time and work process can be greatly reduced, and the cost is reduced. Reduction was achieved.

  Further, even in the above-described configuration, when the protrusion 3c weakens the force pressing the core vertical shaft 1 due to wear due to the rotation of the core vertical shaft 1 or adhesion of oil or dust, the core vertical shaft 1 cannot be held in the core up position. There is. In the present invention, since the engaging piece 3d provided on the rotating plate 3 is engaged with the opening 6a of the retainer 6 attached to the groove 1a of the core vertical shaft 1, the rotating plate 3 and the stopper 5 are in the engaged state. When the core vertical axis 1 is rotated, the rotation of the core vertical axis 1 can be restricted not only by the protrusion 3c of the rotation plate 3 but also by the retainer 6 so that the core vertical axis 1 is reliably positioned at the center-up position. It became something that could be held.

  Further, the cylindrical body 3a of the rotating plate 3 is fitted to the outer wall surface of the cylindrical portion 8a of the bearing 8 supporting the core vertical shaft 1, and the rotating plate 3 is rotatably supported by the cylindrical portion 8a of the bearing 8. Thus, when the rotating plate 3 is attached, only the protrusion 3c contacts the core vertical shaft 1, so that the rotating plate 3 can be inserted smoothly and the rotating plate 3 can be attached easily. Further, since the rotation plate 3 rotates around the cylindrical portion 8a of the bearing 8, the engagement between the rotation plate 3 and the stopper 5 is released, and the rotation plate 3 rotates together with the core vertical shaft 1. Even when the core vertical shaft 1 can rotate smoothly, the reliability of fire extinguishing can be improved.

  The present invention will be described with reference to the embodiments shown in the drawings. Reference numeral 7 denotes an oil tank of an oil combustor, 9 denotes a core inner cylinder erected from the bottom plate of the oil tank 7, and 10 denotes a core outer cylinder attached to the upper plate of the oil tank 7. , 11 is a core that is mounted in the gap between the core inner cylinder 9 and the core outer cylinder 10 so as to be movable up and down. The fuel in the oil tank 7 is sucked up at the lower end of the core 11 and supplied to the upper end of the core 11. .

  1 is a core vertical shaft that is inserted from the outside of the oil tank 7 to perform the core vertical operation, 1b is a pinion gear provided at the inner end of the core vertical shaft 1, 12 is a core holder attached to the outer periphery of the core 11, 12a Is a rack gear provided in the lead holder 12, and the rack gear 12a and the pinion gear 1b mesh with each other. The oil combustor of the embodiment shown in the figure is provided with a dial-type core lifting device, and 13 is an operation knob which is attached to the outer end of the core vertical shaft 1 and rotates the core vertical shaft 1. When the core vertical shaft 1 is rotated by operating the knob 13, the rack gear 12 a meshing with the pinion gear 1 b is driven, and the core 11 moves up and down in the gap between the core inner cylinder 9 and the core outer cylinder 10.

  14 is a combustion cylinder disposed above the core inner cylinder 9 and the core outer cylinder 10, and the core vertical axis 1 is rotated in the center raising direction so that the upper end of the core 11 is looked at the lower part of the combustion cylinder 14. When the ignition device is ignited, the fuel sucked up at the lower end of the wick 11 starts burning at the upper end of the wick 11, and the generated combustion flame and combustion gas are supplied with air in the combustion cylinder 14 to complete the combustion.

  Reference numeral 3 denotes a rotating plate composed of a gear rotatably mounted around the core vertical shaft 1, 2 a denotes a locking pin provided on the core vertical shaft 1, 2 b denotes a locking piece provided on the rotating plate 3, 2 Is a locking portion constituted by a locking pin 2a and a locking piece 2b. When the core vertical shaft 1 is rotated in the center raising direction, the locking pin 2a constituting the locking portion 2 is engaged with the rotating plate 3. Since the stop piece 2b is pushed, the core vertical shaft 1 and the rotating plate 3 rotate together.

  Reference numeral 4 denotes a return spring attached between the oil tank 7 and the rotating plate 3. Reference numeral 5 denotes a stopper which engages with the rotating plate 3 at the center raising position. The rotating plate 3 moves the return spring 4 during the center raising operation. When the winding plate 3 and the stopper 5 are engaged with each other in the centering position, the rotating plate 3 holds the rotational force in the core lowering direction by the return spring 4.

  Reference numeral 15 denotes a seismic device connected to the stopper 5. When the seismic device 15 detects vibration, the stopper 5 is moved to disengage the rotating plate 3 from the stopper 5, and the stopper 5 is turned off. The plate 3 is rotated in the core lowering direction by the force of the return spring 4, and the locking piece 2b pushes the locking pin 2a, so that the core vertical shaft 1 rotates in the core lowering direction together with the rotating plate 3 to extinguish the fire. To do.

  Further, when the pivot plate 3 and the stopper 5 are in the engaged state, the core vertical shaft 1 can be independently rotated by the locking pin 2a away from the locking piece 2b. It can be moved up and down, and the core height can be changed by the operation of the core vertical shaft 1 to perform normal fire extinguishing and adjustment of the thermal power.

  7a is a through hole provided in the side wall of the oil tank 7 through which the core vertical shaft 1 passes, 8 is a bearing attached to the through hole 7a to hold the core vertical shaft 1, and 8a projects outward from the oil tank 7 and has a core. A cylindrical portion 8b of the bearing 8 surrounding the periphery of the vertical shaft 1 is a packing which is sandwiched between the oil tank 7 and the bearing 8 and is in close contact with the periphery of the through hole 7a of the oil tank 7, and the core vertical shaft 1 is a packing 8b. Is held rotatably by the cylinder portion 8a while maintaining oil tightness.

  1a is a groove formed in the core vertical shaft 1, 6 is a ring-shaped retaining member attached to the groove 1a of the core vertical shaft 1, and 6a is an opening formed by cutting out a part of the ring-shaped retaining member 6. The stopper 6 is attached to the groove portion 1a by being inserted into the groove portion 1a of the core vertical shaft 1 through the opening 6a, and is in close contact with the groove portion 1a of the core vertical shaft 1. The stopper 6 is located at the tip of the rotating plate 3, and the stopper 6 prevents the rotating plate 3 from being pulled out toward the outer end of the core vertical shaft 1.

  In the core lifting device having the above configuration, if the resistance of the core vertical shaft 1 during rotation is small, the core vertical shaft 1 may rotate in the core lowering direction due to the weight of the core 11 that sucks up the fuel. If the lead height is lowered at the lead-up position, the combustion state may be deteriorated. On the other hand, if the resistance when the core vertical shaft 1 is rotated is increased, the core vertical shaft 1 may not be rotated to the core lowering position by the force of the return spring 4 during automatic fire extinguishing when the seismic sensor 15 operates. For this reason, when the core vertical shaft 1 is set at the center-up position, the core vertical shaft 1 is held so that the core height does not decrease, and the core vertical shaft 1 is reliably secured by the force of the return spring 4 during automatic fire extinguishing. A structure capable of rotating to the lowered position is required.

  Conventionally, as a countermeasure, a packing is attached between the inner wall surface of the rotating plate 3 and the outer wall surface of the core vertical shaft 1, and when the rotating plate 3 is engaged with the stopper 5 at the center raising position, the packing is The rotation of the core vertical shaft 1 is regulated by being in close contact with the outer wall surface of the core vertical shaft 1, and the core vertical shaft 1 does not rotate in the core lowering direction due to the weight of the core 11. The core height can be maintained. On the other hand, since the rotating plate 3 and the core vertical shaft 1 rotate together during automatic fire extinguishing when the seismic device 15 is operated, even if the packing is attached, the rotation of the core vertical shaft 1 is not hindered, and automatic When the fire is extinguished, the core vertical shaft 1 can reliably rotate to the core lowering position.

  However, since this structure requires packing and parts for fixing the packing, the number of parts increases, the structure of the rotating plate 3 becomes complicated, and the work takes time and effort. It will be disadvantageous in terms of cost. Further, when the packing deteriorates due to friction caused by the rotation of the core vertical shaft 1 or adhesion of dust or oil, the core vertical shaft 1 may not be held at the center-raised position.

  The present invention solves the above-mentioned problem, 3a is a cylinder through which the core vertical shaft 1 formed on the rotating plate 3 is inserted, 3b is a plurality of independent protrusions extending from the tip of the cylinder 3a, Reference numeral 3c denotes a protrusion extending from the tip of the protrusion 3b toward the center. The inner diameter of the cylindrical body 3a of the rotating plate 3 is set to be larger than the outer diameter of the core vertical shaft 1, and the protrusion 3b The tip position of the formed protrusion 3c is set smaller than the outer diameter of the core vertical shaft 1.

  Since the protruding portion 3b provided at the tip of the cylindrical body 3a of the rotating plate 3 is independent, the protruding portion 3b is bent and the protruding portion 3b is movable, and the rotating plate 3 is inserted into the core vertical shaft 1. Then, the protrusion 3 c provided at the tip of the protrusion 3 b spreads outward by the core vertical shaft 1, and the protrusion 3 c at the tip of the protrusion 3 b is in close contact with the outer wall surface of the core vertical shaft 1.

  Since the core vertical shaft 1 is pressed from the side by the protrusion 3c of the rotating plate 3, the protrusion 3c becomes a resistance when the core vertical shaft 1 is rotated while the rotating plate 3 and the stopper 5 are engaged. The weight of the core 11 does not cause the core vertical axis 1 to rotate, and the core height at the center raising position can be maintained. On the other hand, when the seismic device 15 is activated and the stopper 5 is removed, the rotating plate 3 and the core vertical shaft 1 rotate together, so that the rotation of the core vertical shaft 1 is not hindered, and the return spring 4 With this force, the core vertical shaft 1 can be reliably rotated to the core lowering position.

  And if it is this structure, components, such as packing, will become unnecessary, and while the number of parts can be reduced, the rotation plate 3 is assembled | attached to the core up-and-down shaft 1 only by inserting the rotation plate 3 in the core up-and-down shaft 1. As a result, assembly work becomes easy and it can be manufactured at low cost.

  In the embodiment of the present invention, reference numeral 3d denotes an engaging piece formed on the rotating plate 3, and the engaging piece 3d extends forward from the protruding portion 3b of the rotating plate 3. A stopper 6 attached to the groove 1 a of the core vertical shaft 1 is positioned at the tip of the protrusion 3 b of the rotating plate 3, and the engagement piece 3 d is engaged with the opening 6 a of the stopper 6.

  In this configuration, when the core vertical shaft 1 is rotated in a state where the rotating plate 3 is engaged with the stopper 5, the retainer 6 that engages with the engaging piece 3d of the rotating plate 3 does not rotate. Since the retainer 6 is in close contact with the groove 1a of the core vertical shaft 1, not only the protrusion 3c of the rotating plate 3 but also the retainer 6 serves as a rotational resistance of the core vertical shaft 1. Therefore, even if the force by which the protrusion 3c presses the core vertical axis 1 is weakened due to wear due to the rotation of the core vertical axis 1 or adhesion of oil or dust, the core vertical axis 1 will not easily rotate. The core height at the center raising position can be reliably maintained. On the other hand, when the seismic device 15 is actuated and the stopper 5 is removed, the rotation plate 3 and the retainer 6 are rotated together with the core vertical shaft 1 so that the rotation of the core vertical shaft 1 is not hindered. The core vertical shaft 1 can be reliably rotated to the core lowering position by the force of the return spring 4.

  Further, since this structure uses the retaining plate 6 of the rotating plate 3, it can be constructed with a simple configuration without increasing the number of parts.

  In the embodiment of the present invention, the cylindrical body 8a of the bearing 8 is extended to the mounting position of the rotating plate 3, and the inner diameter of the cylindrical body 3a of the rotating plate 3 is matched with the outer diameter of the cylindrical portion 8b of the bearing 8. When the rotating plate 3 is attached to the core vertical shaft 1, the cylindrical body 3 a of the rotating plate 3 is fitted to the outer wall surface of the cylindrical portion 8 a of the bearing 8, and the rotating plate 3 is supported by the cylindrical portion 8 a of the bearing 8. Is configured to be supported.

  In this configuration, when the rotary plate 3 is inserted into the core vertical shaft 1, only the protrusion 3 c of the rotary plate 3 contacts the core vertical shaft 1. The resistance at the time is small and can be inserted smoothly, and the assembly work of the core vertical shaft 1 and the rotating plate 3 becomes easy.

  Further, if the rotating plate 3 is attached to the side wall surface of the core vertical shaft 1, when the stopper 5 is detached from the rotating plate 3 and the rotating plate 3 and the core vertical shaft 1 rotate together, the core vertical Since the rotation plate 3 rotates around the shaft 1, the rotation axis of the core vertical shaft 1 may not be stable, and the rotation of the core vertical shaft 1 may be hindered. Since it rotates around the cylindrical portion 8a of the bearing 8, the rotation axis of the core vertical shaft 1 can be stabilized and the core vertical shaft 1 can be rotated smoothly, and the reliability of fire extinguishing during automatic extinction is improved. became.

It is principal part sectional drawing of the oil combustor provided with the core raising / lowering apparatus of the Example of this invention. In the core raising / lowering apparatus of the Example of this invention, it is a perspective view of the principal part which shows the state before attaching a rotation board to a core vertical axis | shaft. In the core raising / lowering apparatus of the Example of this invention, it is a perspective view of the principal part which shows the state before fixing the rotation board attached to the core vertical axis | shaft. It is a front view of the oil combustor provided with the core raising / lowering apparatus of the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Core vertical shaft 1a Groove part 2 Locking part 3 Rotating plate 3a Tubular body 3b Protruding part 3c Protruding part 3d Engagement piece 4 Return spring 5 Stopper 6 Retaining 6a Opening 7 Oil tank 7a Through-hole 8 Bearing 8a Cylinder

Claims (3)

A core vertical axis 1 for performing the core vertical operation;
A rotation plate 3 that is pivotally mounted about the core vertical axis 1 and is driven by the locking portion 2 when the core vertical axis 1 is rotated in the center-up direction;
A return spring 4 attached to a rotating plate 3 that drives the core vertical shaft 1 in the direction of lowering the core via the locking portion 2, and a stopper 5 that holds the rotational force of the rotating plate 3 by the return spring 4;
In the oil combustor in which the core vertical shaft 1 is rotatably provided with the rotating plate 3 engaged with the stopper 5,
The rotating plate 3 is formed with a cylindrical body 3a having an inner diameter larger than the outer diameter of the core vertical shaft 1;
A plurality of independent protrusions 3b are formed at the tip of the cylindrical body 3a, and a protrusion 3c is formed at the tip of the protrusion 3b toward the center.
The tip position of the protrusion 3c is set smaller than the outer diameter of the core vertical shaft 1,
A core lifting device for an oil combustor, wherein the tip of the projecting portion 3c is widened when the core vertical shaft 1 is inserted, and the projecting portion 3c is in close contact with the side surface of the core vertical shaft 1. The core vertical shaft 1 is formed with a groove portion 1a outside the tip of the protruding portion 3b of the rotating plate 3, and the groove portion 1a is fitted with a ring-shaped retaining member 6 provided with an opening 6a in part. The stopper 6 is in close contact with the groove 1a of the core vertical shaft 1, and
The rotating plate 3 is formed with an engagement piece 3d extending forward from the protrusion 3b,
The core lifting / lowering device for an oil combustor according to claim 1, wherein the engaging piece (3d) of the rotating plate (3) is engaged with the opening (6a) of the retainer (6). A bearing 8 is attached around the through hole 7a on the side wall of the oil tank 7 through which the core vertical shaft 1 passes,
The bearing 8 is provided with a cylindrical portion 8a that passes through the core vertical shaft 1 so as to protrude outward from the oil tank 7,
And the outer diameter of the cylindrical portion 8a of the bearing 8 and the inner diameter of the cylindrical body 3a of the rotating plate 3 are matched,
The cylindrical body 3a of the rotating plate 3 attached to the core vertical shaft 1 is fitted to the outer wall surface of the cylindrical portion 8a of the bearing 8,
The core lifting device of the oil combustor according to claim 1 or 2, wherein the rotating plate (3) is supported so as to be rotatable about a bearing (8).

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