JPS6222736Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to an oil combustor that is easy to use and can withstand long-term use with few breakdowns.

BACKGROUND TECHNOLOGY As shown in FIG. 4, in a conventional oil combustor, fuel is supplied to a vaporizer 42 by a pump 41, and the fuel is preheated and vaporized by the vaporizer 42, and then sent to the spout 44 of a vaporization pipe 43. Atomized fuel is injected into a mixing pipe and burned in a burner.Unvaporized fuel that is not sufficiently atomized in the preheated state prior to combustion is returned to the fuel source 46 through the condensation passage 45, and during combustion, the condensation passage 45 is closed, the atomized fuel is jetted and supplied from the jet port 44 of the vaporizing pipe 43 into the mixing pipe, and the supply of atomized fuel from the jet port 44 provided at the tip of the vaporizing pipe 43 is stopped. There is a prior application to this application in which a solenoid body 48 automatically controls opening and closing of an on-off valve 47 that opens and closes a communication port 49 to a spout 44 and a condensing passage 45 in order to automatically open and close a communication port 49 to a spout 44 and a condensing passage 45. (Refer to Utility Model Application Publication No. 167026/1983).

Problems that the invention attempts to solve: However, this device usually
During the preheating time, the unvaporized fuel supplied from the vaporizer 42 into the vaporization pipe 43 by operating the pump 41 contracts at the valve seat hole 50 and flows into the valve seat hole side chamber 5.
The unvaporized fuel is condensed through a complicated flow path including expansion at 1, contraction at the communication passage 53 bored in the center of the plunger 52, expansion at the fixed core side chamber 54, and contraction at the fixed core hole 55. Since the fuel is returned to the fuel source 46, the structure is extremely complicated, and the solenoid body 48 for automatically operating the on-off valve 47 requires two springs, a first spring 56 and a second spring 57. However, since the second spring 57 is required to resist the force of the first spring 56, the shape of the solenoid body 48 becomes large, making it unsuitable for this type of device used in household kerosene stoves, etc. Since the communication hole 49 is not closed, if the unvaporized fuel that is continuously sent from the vaporizing pipe 42 during the preheating time is insufficiently condensed, an odor will occur. Since fuel is supplied at This idea solves the above problems, and the vaporizer tube 2 is
The ignition time to the burner is shortened without supplying fuel to the solenoid 6, and the movable piece 8 moves smoothly within the solenoid 10 without generating odor, and the number of assembled parts is reduced to avoid the risk of failure. The purpose of this project is to obtain an oil combustor that is more convenient to use and that prevents this from occurring.

Means for Solving the Problem The structure of this invention to achieve the above object is that the ejection tube 4 attached to the tip of the inner tube 1 is bored in the opening 22 of the mixing tube 20 connected to the burner 21. The jet nozzle 2 of the jet cylinder 4 is directed toward the jet nozzle 2
A valve seat 3 is provided in the inner pipe 1, and a needle valve 5 for entering and exiting the spout 2 is provided in the inner pipe 1, and a valve rod 7 having a valve element 6 for opening and closing the valve seat 3 is provided. A cylinder body 11 equipped with a solenoid 10 is fixed to the rear end, and a movable piece 8 to which the base of the valve rod 7 is attached and a suction piece 9 are provided in the cylinder body 11. A movable valve seat 12 and a suction valve element 13 are provided on opposing surfaces, respectively, and a pressing spring 14 is installed between them.
A discharge port 1 is provided on the opposite side of the adsorption valve 13 and communicates with an oil tank 25 via an oil drain pipe 24.
5 is provided with an oil drain port 16, an oil drain gap 27 is provided between the outer peripheral surface of the movable piece 8 and the cylinder body 11, and a heater cylinder 17 that generates heat when energized is provided in the inner tube 1. A heating tube 18 is fitted on the outer periphery of the heater cylinder 17, and one end 2 of the heating tube 18 is provided on the outer circumference of the heater cylinder 17.
8 is connected to the inner pipe 1 at a position close to the ejection cylinder 4, and the other end 29 is connected to an oil feed pump 19 connected to an oil tank 25 at a position close to the solenoid 10 to form a vaporizer body 26, Moreover, the heater cylinder 17 is activated at the beginning of energization.
The oil combustor is equipped with a control device that energizes only the solenoid 10 and the oil pump 19 after the temperature of the vaporizing pipe 26 rises to a certain level.

In this invention, when igniting, the main switch (not shown) is closed and energized by the above-mentioned means, and only the heater cylinder 17 is energized, raising the temperature of the vaporizer 26, but the spout 2 is in contact with the valve seat 3. The fuel oil remaining inside the heating tube 18 and the inner tube 1, which is still closed by the valve 6 of the valve rod 7, is heated and expands.

Thus, the spout 2 is closed, and the heating pipe 18 is connected to the oil pump 19.
9 is stopped, the expanded residual fuel cannot flow out from the spout 2. At this time, the movable piece 8 is separated from the suction piece 9 by the action of the pressing spring 14, and therefore the movable valve seat 12 is separated from the suction valve element 13, so that the residual fuel flows from the discharge port 16 through the oil drain pipe 24. The oil is sent to the oil tank 25. When the inner tube 1 and heating tube 18 of the vaporizer body 26 have sufficiently risen in temperature, by energizing the solenoid 10, the movable piece 8 overcomes the pressure of the pressing spring 14 due to magnetic force and approaches the adsorption piece 9. The movable valve seat 12 comes into close contact with the adsorption valve 13 to close the oil drain port 16. At the same time, the needle valve 5 separates from the spout 2, and the valve seat 3 and valve element 6
A gap is formed between them. Furthermore, the oil feed pump 19 is also energized, and the oil feed pump 19 starts, and the fuel flows into the heating pipe 18, is warmed, gradually rises in temperature, becomes vaporized, and flows into the inner pipe 1, where it flows into the valve seat 3 and the valve element 6. The primary air is ejected from the ejection port 2 toward the opening 22 of the mixing tube 20 through the gap, and at the same time, primary air is sucked in. The primary air and vaporized fuel are mixed in a mixing pipe, ejected in a burner 21, and ignited and burned by a spark plug 23.

Embodiment This embodiment will be described below with reference to the drawings.
The jet nozzle 2 formed in the jet cylinder 4 attached to the tip of the inner pipe 1 is oriented toward the spout 2, and a valve seat 3 is provided on the jet nozzle 2 of the jet cylinder 4, and the jet nozzle 2 is provided inside the inner pipe 1. A needle valve 5 for going in and out is provided, and a valve rod 7 having a valve element 6 for opening and closing the valve seat 3 is provided, and a cylinder body 11 equipped with a solenoid 10 is fixed to the rear end of the inner cylinder 1.
A movable piece 8 to which the base of the valve rod 7 is attached and a suction piece 9 are provided in the cylindrical body 11, and a movable valve seat 12 and a suction valve 13 are provided on opposing surfaces of the movable piece 8 and the suction piece 9, respectively. A pressure spring 14 is interposed between the adsorption valve element 13 and an oil tank 2 provided on the opposite side thereof.
5 and an oil drain port 15 communicating with the oil drain pipe 24, an oil drain port 16 is provided, and an oil drain gap 27 is provided between the outer peripheral surface of the movable piece 8 and the cylindrical body 11. A heater tube 17 that generates heat when energized is fitted onto the tube 1, and a heating tube 18 is provided on the outer periphery of the heater tube 17, and one end portion 28 of the heating tube 18 is provided.
is connected to the inner cylinder 1 at a position close to the ejection cylinder 4, and the other end 29 is connected to the oil tank 2 at a position close to the solenoid 10.
The vaporizing pipe 2 communicates with the oil feed pump 19 connected to the
6, and when de-energized, the valve element 6 provided on the valve rod 7 and the valve seat 3 provided on the ejection tube 4 contact to close the ejection port 2, and the movable valve seat 12 and the adsorption valve The child 13 is detached to open the oil drain port 16, and when energizing, only the heater tube 17 is energized at the initial stage of energization.
The solenoid 10 and the oil pump 19 are configured to be energized after the temperature of the vaporizing pipe 26 rises to a certain level. Reference numeral 30 denotes a temperature sensor attached to the vaporizer body 26, which senses a certain temperature rise in the vaporizer body 26 and operates a switch mechanism (not shown) to control the solenoid 10, oil pump 19, and burner 21. This is to energize the spark plug 23 installed oppositely.

When extinguishing a fire, the main switch (not shown) is turned off, and the oil pump 19 stops feeding oil. At the same time, the movable piece 8 of the solenoid 10 is pushed by the pressing spring 14 and the movable valve seat 12 is pushed by the suction valve 13. Release and
The valve element 6 of the valve rod 7 and the valve seat 3 come into contact to close the spout 2.

Effects of the invention This invention has the above-mentioned configuration, and includes a jet nozzle 2 formed in the jet pipe 4 attached to the tip of the inner pipe 1 at the opening 22 of the mixing pipe 20 connected to the burner 21.
A valve seat 3 is provided at the spout 2 of the spout cylinder 4, and a needle valve 5 for entering and exiting the spout 2 is provided in the inner pipe 1, and a valve 6 for opening and closing the valve seat 3 is provided. A valve rod 7 is provided, and a cylinder 11 equipped with a solenoid 10 is fixed to the rear end of the inner pipe 1.
A movable piece 8 to which the base of the valve rod 7 is attached and a suction piece 9 are provided in the interior of the valve 1, and a movable valve seat 12 and a suction valve 13 are provided on opposing surfaces of the movable piece 8 and suction piece 9, respectively. A pressing spring 14 is interposed,
An oil drain port 16 is provided passing through the adsorption valve 13 and an oil tank 25 provided on the opposite side thereof and a drain port 15 that communicates with the oil drain pipe 24, and between the outer peripheral surface of the movable piece 8 and the cylinder body 11. A drain oil gap 27 is provided in the inner tube 1, and a heater tube 17 that generates heat when energized is fitted onto the inner tube 1. A heating tube 18 is provided on the outer periphery of the heater tube 17, and one end portion 28 of the heating tube 18 is provided on the outer periphery of the heater tube 17. Spout tube 4
The vaporizer body 26 is formed by communicating with the inner pipe 1 at a position close to the solenoid 10 and communicating the other end 29 with the oil feed pump 19 connected to the oil tank 25 at a position close to the solenoid 10. Only the heater cylinder 17 is energized, and after the temperature of the vaporizer pipe 26 rises to a certain level, the solenoid 1
0 and the oil feed pump 19, in the initial stage of energization at the beginning of use, only the heater cylinder 17 is energized, and the solenoid 10 and the oil feed pump 19 are not energized, so that the vaporizer body is not energized. The spout 2 is closed until the temperature at which the fuel 26 rises to a certain temperature and the fuel can be brought into a vaporized state for combustion, while the cylinder 11 equipped with the solenoid 10
The movable valve seat 12 and the adsorption valve 13 are separated from each other, and the interior of the carburetor body 26 communicates with the oil tank 25. Since the vaporizer body 26 is not damaged by the pressure increase accompanying the temperature rise, and residual fuel is discharged, the temperature of the vaporizer body 26 can be quickly raised.

Further, after the temperature of the vaporizer body 26 which has discharged residual fuel has risen to a certain level, the solenoid 10 is energized to simultaneously open the jet port 2 and close the oil drain port 16, and the oil feed pump 19 is energized to close the vaporizer body 26. Oil tank 25 inside
Since the fuel sent by the oil feed pump 19 can promote the vaporization state necessary for combustion within the vaporizer body 26 without being hindered by residual fuel, The vaporizer body 26 is provided with a heating pipe 18 on the outer periphery of the heater cylinder 17, and the vaporizer body 26 is provided with a heating pipe 18 on the outer periphery of the heater cylinder 17, and the vaporizer body 26 is provided with a heating pipe 18 on the outer periphery of the heater cylinder 17. One end 28 of the pipe 18 is connected to the ejection tube 4
The oil tank 25 is connected to the oil tank 25 at a position close to the solenoid 10 because the other end 29 is connected to the oil pump 19 which is connected to the oil tank 25 at a position close to the solenoid 10. The temperature rise in the vaporizer body 26 is reduced by the unheated room temperature fuel sent via the oil feed pump 19, thereby preventing the influence of the temperature rise on the solenoid 10 as much as possible, thereby insulating the coil. The present invention provides a durable solenoid 10 that prevents deterioration of characteristics and has excellent magnetic properties.Furthermore, the movable piece 8 in the cylinder body 11 to which the solenoid 10 is mounted is used to press the spout 2 in the direction of closing it when not energized. Pressed by the spring 14 to close the jet port 2 and close the oil drain port 1.
When the solenoid 6 is opened and the solenoid 10 is energized, the movable piece 8 moves against the pressing spring 14 to open the spout 2 and close the oil drain port 16. It is possible to open and close the spout 2 and the oil drain port 16 with a simple configuration in conjunction with the operation of the solenoid 10, without requiring a means to provide a spring separately from the pressing spring 14 provided in between. Yes, when the force that operates the movable piece 8 of the solenoid 10 is energized, the pressing spring 1
4 is sufficient to resist solenoid 10.
It is suitable for this type of device, which has good performance and is required to be miniaturized.
In addition, by providing the oil drainage gap 27 between the outer circumferential surface of the movable piece 8 and the cylinder 11, the movable piece 8 and the cylinder 11
To ensure smooth movement of a movable piece 8 by reducing frictional resistance between the oil and the oil outlet, thereby ensuring reliable opening/closing of a spout 2 and an oil drain port 16 when energized or de-energized, thereby minimizing troubles such as ignition failure. It is something that can be done.

Furthermore, it has a simple structure, is suitable for mass production, and can be provided at low cost, and has many practical effects.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view, Fig. 2 is a longitudinal sectional view of the main part when not energized, Fig. 3 is a longitudinal sectional view of the main part when energized, and Fig. 4 is an explanatory diagram of the conventional product. . 1...Inner pipe, 2...Spout port, 3...Valve seat, 4...
...Ejection tube, 5...Needle valve, 6...Valve element, 7...Valve rod, 8...Movable piece, 9...Adsorption piece, 10...Solenoid, 11...Cylinder body, 12...Movable valve seat, 13
...Adsorption valve, 14...Press spring, 15
...Discharge port, 16...Oil drain port, 17...Heater tube, 18...Heating tube, 19...Oil pump, 2
0... Mixing pipe, 21... Burner, 22... Opening, 23... Spark plug, 24... Oil drain pipe, 25
...oil tank, 26 ... vaporizer body, 27 ... oil drain gap, 28 ... one end, 29 ... other end, 30 ...
Temperature sensor.

Claims (1)

[Scope of utility model registration request] Opening 2 of mixing tube 20 connected to burner 21
2, a valve seat 3 is provided on the spout 2 of the spout 4, and a valve seat 3 is provided on the spout 2 of the spout 4 attached to the tip of the inner pipe 1; A needle valve 5 for entering and exiting the valve is provided, and a valve rod 7 having a valve element 6 for opening and closing the valve seat 3 is provided, and a cylindrical body 11 equipped with a solenoid 10 is fixed to the rear end of the inner tube 1. A movable piece 8 to which the base of the valve rod 7 is attached and a suction piece 9 are provided in the cylindrical body 11, and a movable valve seat 12 and a suction valve 13 are provided on opposing surfaces of the movable piece 8 and the suction piece 9, respectively. Meanwhile, the pressing spring 14
A discharge port 1 is provided on the opposite side of the adsorption valve 13 and communicates with an oil tank 25 via an oil drain pipe 24.
5 is provided with an oil drain port 16, an oil drain gap 27 is provided between the outer peripheral surface of the movable piece 8 and the cylinder body 11, and a heater cylinder 17 that generates heat when energized is provided in the inner tube 1. A heating tube 18 is fitted on the outer periphery of the heater cylinder 17, and one end 2 of the heating tube 18 is provided on the outer circumference of the heater cylinder 17.
8 is connected to the inner pipe 1 at a position close to the ejection cylinder 4, and the other end 29 is connected to an oil feed pump 19 connected to an oil tank 25 at a position close to the solenoid 10 to form a vaporizer body 26, Moreover, the heater cylinder 17 is activated at the beginning of energization.
The oil combustor is equipped with a control device that energizes only the solenoid 10 and the oil pump 19 after the temperature of the vaporizing pipe 26 rises to a certain level.