JP2015040648A - Discharge igniter of oil combustor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure of an igniter in which the size between a core and an electrode can be adjusted without removing the core and the electrode body.SOLUTION: A core 4 is attached to a gap of a core housing cylinder 3, and an ignition window hole 8 is provided at a core outer cylinder 2 opposed to the side surface of the core 4. A discharge electrode 5 and a counter electrode 6 are attached by facing the core 4 from the ignition window hole 8, and an insulator 7 covering an outer circumference of the discharge electrode 5 is attached on the upper surface of a receiving edge 2a disposed outside the core outer cylinder 2 by a bracket 9. The discharge electrode 5 is bent in the L-shape, and the tip is positioned downward from the upper end of the core 4 lifted, and the counter electrode 6 constitutes a curved part 6b so as to be opposed with the tip of the discharge electrode 5. The bracket 9 is provided with a locking member 10 for rotatably holding the insulator 7. The insulator 7 is rotated while being attached by the bracket 9, and adjusts the core 4 and the electrode to an optimal position by changing a height of the tip of the discharge electrode 5.

Description

  The present invention relates to a discharge type ignition device for an oil combustor that uses a discharge to ignite a core.

  As an ignition device for an oil combustor, there is one that uses a dry battery as a power source to generate a discharge spark using a discharge electrode for ignition and a counter electrode to ignite the core. In the case of using a dry battery as a power source, there is a problem that the spark due to discharge is weak and the power source voltage fluctuates greatly. For this reason, it is necessary to devise a technique for arranging the discharge electrode so as to be in contact with or slightly buried in the side surface of the core and maintaining the dimension between the core and the electrode at the optimum position.

  In order to solve such problems, conventionally, an insulator is arranged around the discharge electrode, and the insulator is attached and fixed to the outside of the core outer cylinder. The core outer cylinder has an ignition window hole. The insulator is inserted through the ignition window hole.At this time, the insulator is positioned by the ignition window hole, so that the dimensions of the core and the discharge electrode are maintained at the optimum position, and the ignition performance is maintained. (See Patent Document 1).

JP-A-6-2011127

  Insulators that position discharge electrodes require dimensional accuracy, but insulators are generally used with insulators. Insulators are subject to dimensional errors in the manufacturing process, which makes dimensional management difficult and increases costs. There are challenges.

In addition, since the core is made of fiber, it is difficult to make an accurate dimension, and the height of the tip of the core is likely to cause individual differences depending on the product, and even if the discharge electrode is attached correctly, There may be some variation in the dimensions.
The direction in which the discharge spark flies is the shortest distance between both electrodes, and if the height of the tip of the lead changes, the lead may not ignite in the direction of the discharge spark. In order to obtain stable ignition performance, it is necessary to adjust the position of the core and electrode, but it is difficult to adjust, and it may be necessary to remove the core and electrode to perform adjustment work, which is laborious and inefficient. .

  Also, as the burn time elapses, the height of the lead may change, tar may adhere, and subtle deformation may occur on the surface of the lead. Even if it is generated, the spark may leave the core and not ignite. In this case, attempts were made to improve the core by baking or replacing the core. However, after the core was burned or replaced, it was necessary to readjust the distance between the core and the electrode, which was troublesome. .

  The present invention solves the above-described problem, and includes a core 4 that is mounted in a space between a core housing cylinder 3 constituted by a core inner cylinder 1 and a core outer cylinder 2 so as to be movable up and down, and a core 4 that is exposed by being raised. The discharge electrode 5 disposed at a position facing the side surface on the core outer cylinder 2 side, the counter electrode 6 disposed in the vicinity of the discharge electrode 5 on the core outer cylinder 2 side, and the counter electrode 6 form an insulating state. An insulator 7 covering the outer periphery of the discharge electrode 5 is provided, and a gap is formed between the upper portion of the core outer tube 2 and the raised core 4, and an ignition window hole 8 is formed in this portion of the core outer tube 2. And a receiving edge 2a which is disposed below the ignition window hole 8 and extends to the outside of the core outer cylinder 2 is provided. The discharge electrode 5 is fitted with an insulator 7 in the ignition window hole 8 while the tip thereof is fitted. The insulator 7 is attached to the top surface of the receiving edge 2a by means of a bracket 9, and is attached to the discharge electrode 5 and the front. In the oil combustor that ignites the core 4 by discharging a discharge spark between the counter electrode 6 and the counter electrode 6, the discharge electrode 5 is positioned below the upper end of the core 4 that is bent in an L shape and the tip is raised, The counter electrode 6 is attached to the side of the discharge electrode 5, and has a horizontal portion 6 a that penetrates the ignition window 8, and a curved portion that extends upward from the horizontal portion 6 a and curves upward of the discharge electrode 5. 6b, the curved portion 6b is provided so as to face the tip of the discharge electrode 5, and the bracket 9 is provided with a locking portion 10 that rotatably holds the insulator 7, and the insulator 7 The discharge electrode 5 and the insulator 7 rotate while being attached to the bracket 9, and the insulator 7 is held by the locking portion 10 at a position where the rotation is stopped. Distance between counter electrode 6 and core 4 And adjusting the optimum distance.

  Further, a locking surface 7a is provided on the outer peripheral surface of the rear portion of the insulator 7, and the locking member 10 is constituted by a movable body 10a made of an elastic material attached to the bracket 9, and the movable body 10a is made by an elastic force. The insulator 7 is held by the bracket 9 by pressing the locking surface 7a, and when the insulator 7 is rotated, the movable body 10a is deformed away from the locking surface 7a, and the insulator 7 rotates. Since the engaging surface 7a is pressed and held by the elastic force of the movable body 10a at the position where the discharge is stopped, the position of the discharge electrode 5 is fixed. It can be rotated while attached to the upper surface, and the position of the discharge electrode 5 can be easily changed.

  Further, since the insulator 7 can be rotated by a certain angle by forming the outer peripheral surface of the insulator 7 in a polygonal shape and forming the locking surface 7a, the position of the discharge electrode 5 can be easily finely adjusted. is there.

  In the present invention, while the insulator 7 covering the outer periphery of the discharge electrode 5 is attached to the upper surface of the receiving edge 2a by the bracket 9, the discharge electrode 5 and the insulator 7 are rotated and bent into an L shape of the discharge electrode 5. The position of the tip can be changed. The counter electrode 6 forms a curved portion 6b from the side of the discharge electrode 5 toward the top of the tip of the discharge electrode 5, and the tip of the discharge electrode 5 and the curved portion 6b of the counter electrode 6 face each other and are disposed at the shortest distance. Thus, a discharge spark is generated between the tip of the discharge electrode 5 and the curved portion 6 b of the counter electrode 6.

  When the position of the tip is changed by rotating the discharge electrode 5, the position of the tip of the discharge electrode 5 with respect to the core 4 while keeping the tip of the discharge electrode 5 and the curved portion 6 b of the counter electrode 6 at the shortest distance. Thus, the discharge electrode 5 can be adjusted to an optimum position for the ignition of the core 4.

  Therefore, when it is necessary to check the height of the tip of the core 4 and adjust the position of the tip of the core 4 and the position of the discharge electrode 5 at the time of production line or core replacement, simply rotate the discharge electrode 5. Since the adjustment can be made without removing the core 4 and the electrode, the adjustment work can be simplified and the workability and productivity can be improved.

  In addition, a locking surface 7a is provided on the outer peripheral surface of the rear portion of the insulator 7, a movable body 10a made of an elastic material is provided on the bracket 9, and the movable body 10a presses the locking surface 7a with an elastic force, thereby insulating the insulator. 7 is held by the bracket 9. For this reason, when the insulator 7 is rotated in order to adjust the position of the discharge electrode 5, the movable body 10a is deformed in a direction away from the locking surface 7a, and when the rotation of the insulator 7 is stopped, the movable body 10a is restored to the original state. Since the shape is restored and the insulator 7 is held by pressing the locking surface 7a by the elastic force of the movable body 10a, the position of the discharge electrode 5 can be reliably fixed. In this configuration, when the insulator 7 is rotated, a tool is not necessary, and it can be rotated by hand, so that adjustment work can be easily performed.

  In addition, when the outer peripheral surface of the insulator 7 is formed in a polygonal shape and the locking surface 7a is configured, resistance is felt every time the insulator 7 rotates by a certain angle, so the angle of the tip of the discharge electrode 5 changes. This makes it easy to confirm, the position where rotation stops is easily understood, and the tip of the discharge electrode 5 can be adjusted by a certain angle, so that the adjustment work can be facilitated.

It is a front view of the ignition device of the oil combustor which shows the Example of this invention. It is a top view of the ignition device of the oil combustor which shows the other Example of this invention. It is a front view of the ignition device of the oil combustor which shows the other Example of this invention. It is a front view which shows the state after adjustment of a discharge electrode in the Example shown in FIG. It is a disassembled perspective view of the ignition device of the oil combustor which shows the other Example of this invention. It is principal part sectional drawing of the oil combustor provided with the ignition device of this invention.

  The present invention will be described with reference to the embodiments shown in the drawings. Reference numeral 11 is an oil tank for storing fuel, 1 is a core inner cylinder formed from the bottom plate of the oil tank 11, 2 is a core outer cylinder provided on the upper surface of the oil tank 11, 3 is A core housing cylinder 4 composed of the core inner cylinder 1 and the core outer cylinder 2 is a core mounted in the gap between the core housing cylinders 3 so as to be movable up and down, and the lower part of the core 4 is extended into the fuel in the oil tank 11. The fuel in the oil tank 11 is sucked at the lower part of the lead 4 and supplied to the tip of the lead 4. Reference numeral 12 denotes a core vertical axis for moving the core 4 up and down. When the core vertical axis 12 is rotated, the core 4 moves up and down in the gap of the core housing cylinder 3.

  5 is a discharge electrode mounted on the side surface of the raised core 4, 6 is a counter electrode disposed above the discharge electrode 5, and 13 is an oscillation circuit to which the discharge electrode 5 is connected. Electric power is supplied to the oscillation circuit 13, and the oscillation circuit 13 operates to generate a discharge spark between the discharge electrode 5 and the counter electrode 6, and ignites the core 4.

  The upper portion of the core outer cylinder 2 forms a gap with the raised core 4, and the portion where the gap is provided is taller than the core 4, and this gap is formed between the discharge electrode 5 and the counter electrode 6. The storage part. Reference numeral 8 denotes an ignition window hole provided on the side surface of the core outer cylinder 2 facing the raised core 4 through a gap, 2a denotes a receiving edge formed outside the core outer cylinder 2, and the receiving edge 2a is an ignition window. It is attached at a position lower than the hole 8.

  7 is an insulator that covers the outer periphery of the discharge electrode 5 and creates an insulation state with the counter electrode 6, 9 is a bracket for receiving the insulator 7 and fixing it to the edge 2 a, and 9 a is a screw that attaches the bracket 9 to the edge 2 a. The discharge electrode 5 is inserted into the ignition window hole 8, the insulator 7 is received on the edge 2a, the bracket 9 is attached to the insulator 7 installed on the receiver edge 2a, and the screw 9a is attached. When the bracket 9 is fixed to the receiving edge 2a, the discharge electrode 5 is fixed. At this time, the insulator 7 is fitted into the ignition window hole 8 so that the discharge electrode 5 is not electrically connected to the core outer tube 2 and the counter electrode 6.

  2b is an external flame tube receiver continuous with the upper portion of the core outer tube 2, 14 is an internal flame tube disposed on the upper portion of the core inner tube 1, and 15 is an external flame disposed on the outer flame tube receiver 2b of the core outer tube 2. When the core 4 is raised by the core lifting device and the tip is protruded above the core housing cylinder 3 and an ignition operation is performed to discharge between the discharge electrode 5 and the counter electrode 6, Combustion starts by igniting the fuel supplied to the tip, and the generated combustion flame and combustion gas are sent to the gap between the inner flame cylinder 14 and the outer flame cylinder 15. Then, air that rises in the internal space of the core inner cylinder 1 and flows into the inner flame cylinder 14 and is supplied to the gap, and air that is supplied to the gap from the outside of the outer flame cylinder 15 are vaporized from the core 4. Combustion is completed by mixing with the spent fuel. And at the time of fire extinguishing, if the core 4 is lowered | lowered and the core 4 is accommodated in the core accommodating cylinder 3, it will extinguish.

  In the embodiment of the present invention, the discharge electrode 5 and the counter electrode 6 constitute an electrode body attached to the bracket 9, and this electrode body is attached to the receiving edge 2a. When the discharge electrode 5 and the counter electrode 6 are inserted from the ignition window hole 8 and are placed on the receiving edge 2a by receiving the insulator 7 and the bracket 9, and the screw 9a is attached to the bracket 9 and fixed to the receiving edge 2a, the discharge electrode 5 The counter electrode 6 can be attached to the side surface of the core 4. Reference numeral 16 denotes an ignition lid that penetrates the tip of the insulator 7 of the discharge electrode 5 and the counter electrode 6. When the electrode body is attached, the ignition lid 16 closes the ignition window hole 8 so that unnecessary air is removed. Is not supplied.

  The electrode body is adjusted in advance so that the distance between the discharge electrode 5 and the counter electrode 6 is an optimum position, and the positions of the discharge electrode 5 and the counter electrode 6 are determined when the electrode body is attached to the receiving edge 2a. Adjustment between the electrodes is unnecessary, and the attachment of the discharge electrode 5 and the counter electrode 6 is simplified.

The discharge electrode 5 is formed in an L shape and has a tip facing upward, and the tip of the discharge electrode 5 is positioned below the tip of the raised core 4. On the other hand, the counter electrode 6 is disposed at a position higher than the discharge electrode 5, and the tip of the discharge electrode 5 and the counter electrode 6 are opposed to each other so as to have the shortest distance.
The discharge electrode 5 is arranged so as to be in contact with or slightly buried in the side surface of the core 4. When a discharge spark is generated between the tip of the discharge electrode 5 and the counter electrode 6, the core above the discharge electrode 5 is disposed. 4 fuel can be ignited.

  Since the core 4 is made of glass fiber yarn, the length of the core 4 varies, and the tip position of the core 4 protruding above the core housing cylinder 3 may cause a slight error. . When the lead 4 is long and the tip position is high, the flame is extended and the combustion state is deteriorated. On the other hand, when the tip position of the core 4 is lower than the tip position of the discharge electrode 5, the tip of the discharge electrode 5 is not in contact with the side surface of the core 4, so that a discharge spark is generated between the tip of the discharge electrode 5 and the counter electrode 6. Even so, the fuel in the core 4 cannot be ignited. In such a case, it is necessary to adjust the positions of the core 4 and the electrode. When the core 4 is long and the tip position is high, it can be adjusted by cutting the tip of the core 4 and adjusting the height. When 4 is short and the tip position is low, the core 4 and the electrode body may be reattached or replaced, which may take time.

  The present invention simplifies the adjustment work by adjusting the distance between the core 4, the discharge electrode 5 and the counter electrode 6 so that the distance between the core 4, the discharge electrode 5 and the counter electrode 6 is the optimum dimension. 9b is a holding portion to which the rear portion of the insulator 7 formed at the center of the bracket 9 is fitted, 9c is a mounting piece to the receiving edge 2a formed on both sides of the holding portion 9b, and 10 is a bracket. 9 is a locking member for holding the insulator 7 attached thereto, and when the insulator 7 is attached to the holding portion 9b of the bracket 9 and the locking member 10 is engaged with the bracket 9, the insulator 7 is held by the holding portion 9b. And the locking member 10.

  The insulator 7 has a circular outer peripheral surface, so that it can be rotatably mounted in the bracket 9 while being held in the holding portion 9b by the locking member 10, and the distal end of the discharge electrode 5 is the insulator. 7 can be rotated around the center.

  The counter electrode 6 is attached to the side surface of the bracket 9 located on the side of the discharge electrode 5 and penetrates through the ignition window hole 8 to form a horizontal portion 6a toward the side surface of the core 4, and the horizontal portion 6a is The curved portion 6b is formed by bending upward at a position not in contact with the core 4. The bending portion 6 b extends upward from the side of the discharge electrode 5 and then curves upward toward the tip of the discharge electrode 5, and is formed in a concentric shape centering on the rotation center of the discharge electrode 5. The tip of the discharge electrode 5 and the curved surface inside the curved portion 6b of the counter electrode 6 are opposed to each other so as to be the shortest distance, and a discharge spark is generated between the tip of the discharge electrode 5 and the curved portion 6b of the counter electrode 6. Will occur.

  The electrode body constituted by the discharge electrode 5, the counter electrode 6 and the bracket 9 is formed by inserting the discharge electrode 5 and the counter electrode 6 from the ignition window hole 8 and installing the bracket 9 on the edge 2a. A screw 9a is attached to the electrode body to fix the electrode body to the edge 2a. At this time, the tip of the discharge electrode 5 is oriented in the direction of 12 o'clock, and the tip of the discharge electrode 5 is positioned below the tip of the raised core 4 at a position where the tip of the discharge electrode 5 contacts or is slightly buried. It is supposed to be.

  If an error occurs in the height of the lead 4 and the lead 4 is shortened, the tip position of the lead core 4 may be lower than the tip position of the discharge electrode 5, and the tip of the discharge electrode 5 may be the side surface of the lead 4. No contact with. In the present invention, since the insulator 7 can be rotated in the holding portion 9b of the bracket 9 with the electrode body attached to the receiving edge 2a, the tip position of the discharge electrode 5 is set to the horizontal portion 6a side of the counter electrode 6. , The angle of the tip of the discharge electrode 5 is changed while maintaining the shortest distance between the tip of the discharge electrode 5 and the curved portion 6b of the counter electrode 6, and the height of the tip of the discharge electrode 5 is increased. Can be changed.

  If the rotation is stopped when the tip of the discharge electrode 5 is located below the tip position of the core 4, the tip of the discharge electrode 5 can be brought into contact with the side surface of the core 4. Even if the tip of the discharge electrode 5 faces obliquely upward, the tip of the discharge electrode 5 and the curved portion 6b of the counter electrode 6 face each other at the shortest distance, so the tip of the discharge electrode 5 and the curved portion of the counter electrode 6 Discharge sparks were generated between 6b and the fuel in the core 4 could be ignited.

  For this reason, even when the tip position of the lead 4 and the tip position of the discharge electrode 5 do not match, the position can be adjusted without removing the lead 4 or the electrode body, and the adjustment work can be simplified. Moreover, since the angle of the tip of the discharge electrode 5 is merely changed and adjustment can be performed while checking the position, workability can be improved.

  3 and 4 showing a specific structure, 10a is a movable body made of an elastic material constituting the locking member 10, 9d is an engaging portion with the movable body 10a provided on the bracket 9, and 7a is an insulator 7. An engaging surface 7b provided on the outer peripheral surface of the rear portion is an engaging groove whose diameter is reduced with respect to the engaging surface 7a. The insulator 7 is attached to the holding portion 9b of the bracket 9, and the bracket 10 is deformed while deforming the movable body 10a. 9, the movable body 10 a presses the locking surface 7 a of the insulator 7, and the elastic force of the movable body 10 a acts in a direction to push the insulator 7 against the holding portion 9 b of the bracket 9. The locking surface 7a of the insulator 7 is pressed by the holding portion 9b, and the insulator 7 is held by the bracket 9 so that the discharge electrode 5 can be fixed. Further, since the movable body 10a engages with the locking groove 7b, the insulator 7 is prevented from moving in the front-rear direction, and the discharge electrode 5 can be positioned in the front-rear direction at the same time.

  When the insulator 7 attached to the bracket 9 is rotated, it can be rotated by deforming the movable body 10a, which is an elastic material, in a direction away from the locking surface 7a, and the insulator 7 can be rotated at a desired position. When the rotation is stopped, the movable body 10a is restored to its original shape and presses the locking surface 7a of the insulator 7, so that the insulator 7 can be held.

  In this configuration, the operator can rotate the discharge electrode 5 and the insulator 7 by hand, and it is not necessary to prepare a special tool for adjustment and the adjustment work can be easily performed. In addition, the insulator 7 can be reliably held by the movable body 10a, which is an elastic material, and the position of the discharge electrode 5 can be fixed.

  In another embodiment of the present invention, the outer peripheral surface of the insulator 7 is polygonal, and the locking surface 7a is constituted by the polygonal surface. The locking groove 7b is not necessarily polygonal and may be circular. The insulator 7 is pressed by the holding portion 9b at the polygonal surface portion and is held by the bracket 9. When the insulator 7 is rotated, the movable body 10a is moved when the corner portion of the polygon hits the holding portion 9b. When deformed, the insulator 7 moves away from the holding portion 9b and moves to the adjacent surface beyond the corner portion, so that the movable body 10a returns to the original shape, and the insulator 7 is a polygonal surface portion. Is pressed against the holding portion 9b. For this reason, since the resistance changes every time the insulator 7 is rotated by a certain angle, a click feeling is obtained, and it becomes easy to confirm that the angle of the tip of the discharge electrode 5 has changed, and the position where the rotation of the insulator 7 is stopped. Is easy to understand and can be adjusted easily.

DESCRIPTION OF SYMBOLS 1 core inner cylinder 2 core outer cylinder 2a receiving edge 3 core accommodating cylinder 4 core 5 discharge electrode 6 counter electrode 6a horizontal part 6b curved part 7 insulator 7a locking surface 8 ignition window hole 9 bracket 10 locking member 10a movable body

Claims (3)

In a position facing the side surface of the core 4 that is exposed to rise and exposed in the gap between the core housing cylinder 3 constituted by the core inner cylinder 1 and the core outer cylinder 2 and the core 4 that is exposed ascending. Disposed discharge electrode 5, counter electrode 6 disposed in the vicinity of discharge electrode 5 on the core outer tube 2 side, and insulator 7 covering the outer periphery of discharge electrode 5 so as to form an insulating state with counter electrode 6. Provided,
A gap is formed between the upper part of the core outer cylinder 2 and the raised core 4, and an ignition window hole 8 is provided in the core outer cylinder 2 of this part, and is arranged below the ignition window hole 8. A receiving edge 2a extending outside the core outer cylinder 2 is provided,
The discharge electrode 5 is attached by inserting the insulator 7 into the ignition window hole 8 while the tip is inserted into the core 4, and the insulator 7 is attached to the upper surface of the receiving edge 2 a by a bracket 9. In the oil combustor that ignites the core 4 by discharging a discharge spark between the discharge electrode 5 and the counter electrode 6,
The discharge electrode 5 is positioned below the upper end of the core 4 bent in an L shape and raised at the tip,
The counter electrode 6 is attached to the side of the discharge electrode 5, a horizontal portion 6 a that penetrates the ignition window hole 8, and a curve that extends upward from the horizontal portion 6 a and curves upward of the discharge electrode 5. And a curved portion 6b provided to face the tip of the discharge electrode 5,
The bracket 9 includes a locking member 10 that rotatably holds the insulator 7, and the discharge electrode 5 and the insulator 7 rotate while the insulator 7 is attached to the bracket 9. The insulator 7 is held by the locking member 10 at a position where the rotation is stopped, and the distance between the discharge electrode 5, the counter electrode 6 and the core 4 is adjusted to an optimum distance. Type ignition device. A locking surface 7a is provided on the outer peripheral surface of the rear portion of the insulator 7, and the locking member 10 is composed of a movable body 10a made of an elastic material attached to the bracket 9,
The movable body 10a presses the locking surface 7a by elastic force to hold the insulator 7 to the bracket 9,
When the insulator 7 is rotated, the movable body 10a is deformed away from the locking surface 7a, and the locking surface 7a is pressed by the elastic force of the movable body 10a at a position where the rotation of the insulator 7 is stopped. The discharge ignition device for an oil combustor according to claim 1, wherein the position of the discharge electrode is fixed.   The discharge type ignition device for an oil combustor according to claim 2 or 3, wherein the outer peripheral surface of the insulator (7) is formed in a polygonal shape to constitute the locking surface (7a).

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