JPS61116219A - Ignition device for petroleum stove - Google Patents

Abstract

PURPOSE:To make a long life of an igniter unit by a method wherein a timer circuit for energizing an igniter heater for a specified period of time under a closed condition of the switch is arranged. CONSTITUTION:When a switch 58 is instantaneously closed, a capacitor 63 is charged instantaneously through a resistor R1 and a high level output is outputted by AND circuit 62. Due to this operation, a transistor 64 is conducted and another transistor 61 is also conducted, a filament 38 of an igniter heater is energized and the lifted wick is ignited. When the switch 58 is returned and opened, the capacitor 63 is discharged at once through the resistor R2. An energization time of the filament 38 can be set by the resistor R2 and the capacitor 63. In this way, it is possible to limit an energization time of the igniter heater, prevent a non-required electric power and extend a long life of the igniter heater.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an ignition device for a kerosene stove in which a wick is moved upward and then ignited by an ignition heater to cause combustion.

(B) Conventional technology In conventional stoves of this type, as disclosed in Publications No. 55-4692 and Publication No. 48278/1980, etc., the wick is moved to the ignition position by operating a rotary knob, etc. After raising the wick, the ignition heater was brought close to the top of the wick and ignited by operating the ignition knob using the control lever.

(c) Problems to be solved by the invention Therefore, in the above-mentioned conventional technology, the ignition peak energization time for ignition is not constant, resulting in wasted power.
The life of the heater was also shortened. For this reason, the present invention makes the energization time of the ignition heater constant, prevents unnecessary power consumption, and thereby extends the life of the ignition heater.

B) Means for solving the problem To this end, the present invention provides an ignition heater for igniting a wick that can be moved up and down between a wick guide tube and a wick guide outer tube, and a switch that is closed by the ignition operation. and a timer circuit that energizes the ignition heater for a predetermined period of time when the switch is closed.

(E) Operation When the rotary knob (91) protruding from the front panel (8) is operated, the binion (Ill) of the wick vertical axis αl also rotates, and when the predetermined rotation is made, the lamp wick is A) protrudes upward from the core guide cylinder. In this state, the locking portion (53 of the actuating member 6υ of the vibration sensing device
7), the coil spring t21+ is engaged with the pawl 0 to store force and prevent the ratchet body αD from rotating in the opposite direction. Then, when the ignition operating member (551) is pressed against the spring egg, the switch trowel is instantaneously closed, and the capacitor is charged during this closing.Then, both transistors 611- conducts, the filament (to) of the ignition heater (c) is energized, and the lifted lamp wick 0e is ignited. When the switch field returns, the capacitor field is discharged, and after the so-called timer period has elapsed, both transistors Ua4) become non-conductive, and the energization of the filament (to) of the ignition heater (to) also stops.

(f) Example An embodiment of the present invention will be described in detail below with reference to the drawings.

(1) is a kerosene stove cabinet with a top plate (2) and a stand (3) attached to the bottom; (4) is a combustion tube; (5)
(6) is a vertical reflector having a semicircular cross-sectional shape in plan view, (7) is a horizontal reflector, and (8) is a front panel from which a rotary knob (9) is protruded.

Next, CIα is a core vertical shaft, a21, which has the rotation knob (91) fixed on the front end and has a binion (11) on the rear end.
is a bolt body fixed to the middle part of the shaft, and the bolt body a
On the outer circumferential surface of z, a large number of knurls 0 are formed parallel to the shaft (101), and a protrusion (1 knurling) is formed respectively.

Kasumi is a nut body that engages with the protrusion α4 of the bolt body (12+), and the nut body (151 has a protrusion 161 (161) protruding from it.

The frame is a ratchet body fixed to one end of a cylindrical pipe that is rotatably inserted through the core vertical axis Ou, and a large number of pawls a1 are formed on the outer periphery of the ratchet body (Iη), and the nut body A hole (211) into which the 19 protruding rod (161) is inserted is bored. (211 has one end fixed to the cap body (c) which is fixed to the main body pipe n, and the other end is attached to the cylindrical pipe. The coil spring fixed to the other end of αυ, (
(goods) is the core vertical axis (101) with a clip (
It is a roller body that is installed to prevent弼 is a tank body consisting of an upper tank ridge and a lower tank ridge that pass through the main body pipe device, (to) is a core guide tube installed in the lower tank (to), and A plurality of air circulation holes Gυoz are opened on the top surface, and a cylindrical body (described later) is installed around the periphery.
A placing part (G) on which Q is placed is formed.

(2) is a heater support fixed to the top surface of the top ■, (c)
is an ignition heater held by the elasticity of the support, and the heater (c) has a filament (c) between a pair of conductors (C37) protruding from between the main bodies made of ceramic.
The other end of the conductor GD is connected to a timer circuit (to be described later).
is connected to.

(40 is a cylindrical body, the cylindrical body (4G has a celestial cylinder shape,
A large number of air holes (43J) are provided on the circumferential side, and a through hole (42) is provided to penetrate the heater body (G).In addition, a plurality of communication ports (42) are provided on the top surface C3. , a mounting portion (4) is formed on the periphery on which the inner flame tube (not shown) of the combustion tube (4) is placed.

(46) is a lamp wick that is slidably disposed around the wick guide tube. The lower end of the lamp wick is connected to the liquid fuel N in the tank body
immersed in it. (4n is a support frame that supports the lamp wick, and this frame (4η forms a rack body (48), and the wick upper and lower shaft (pinion I of 101 meshes with the old pinion)
When the lamp rotates, the lamp wick (46) is moved up and down. (491 is a wick guide outer cylinder that surrounds the lamp wick (46), and the lower end of the outer cylinder 0!1 is fixed to the frame of the upper tank, and forms a fire pan part (■) at the upper end, and the outer flame of the combustion tube (4) Tube (4A
) are listed. (4B) is an outer cylinder provided outside the outer flame cylinder (4A).

FIG. 4 is a diagram showing a seismic sensing device (2) that extinguishes fire by lowering the lamp wick (06) when an earthquake or the like occurs. all is an actuating member that rotates in conjunction with a swinging weight, with a locking portion 6z having one end that engages with a pawl σ9 provided on the ratchet body αD; . In the event of an earthquake, the weight hammer K swings, and as shown by the two-dot chain line, the engagement between the locking part 6z and the claw tl'J is released, and the coil spring energizes the lamp wick. (c) descends and extinguishes the fire.

In addition, the front panel (8) has operation holes (8 people).
When the ignition operating member mark is pushed backwards through the hole (8A) against the spring (T), the switch (T) attached to the mounting plate 57) is closed.

Next, FIG. 5 shows the control circuit for the ignition barrel, including the timer circuit, hammer, etc. The button is a battery that serves as a power source, and the e side of it is a PNP
It is connected to the emitter of the type transistor 6υ and also to the switch trowel. The other end on the switch side is a resistor (
A capacitor connected to the AND circuit 64 via R1) (R4) and grounded to the connection point (2) between the resistors (R1) and (R4) is also grounded to the connection point (Bl). The other end of the AND circuit 0 is connected to the pace of the NPN transistor (product) via the resistor (R,). A series circuit of a resistor (R3) and a diode is provided between the connection point with the circuit 67J (0 and the connection point 03).The collector of the emitter-grounded transistor is connected to the resistor (R1). is connected to the base of the transistor 6υ via
The collector of Dystaro D is connected to the filament of the ignition heater.

The operation of the above configuration will be explained below.

First, when the rotary knob (9) protruding from the front panel (8) is rotated, the pinion (111) of the core vertical axis u1 also rotates, and when the rotation reaches approximately 270°, the rack body +4
8 and the support frame (4'rI), the lamp wick (A) projects approximately 8n upwards from the mounting part (to) of the wick guide tube (C).
(indicated by a chain double-dashed line). At this time, even if you release your hand from the rotary knob (9), the engaging part 5z of the actuating member 611 of the vibration sensing device ■
engages with the claw spring 9 of the ratchet body αη, causing the coil gripper (2D) to store force and prevent reverse rotation of the ratchet body αn.

In this state, when the ignition operating member (to) is pressed against the spring (2) through the operation hole (8A) of the front panel (8), the switch (to) is instantaneously closed. This closed time varies depending on how the user uses it, but
It is assumed that the time is approximately 0.1 seconds, and during this closing, the capacitor is instantly charged via the resistor (R1) set to a small resistance value. When the capacitor Q is charged, the AND circuit @ outputs a high level output. Therefore, the transistor becomes conductive, and the other transistor 6υ also becomes conductive, so that the filament of the ignition heater (g) is energized and the raised lamp wick (46) is ignited. When the switch trowel returns and opens, the capacitor Q immediately discharges via the resistor (R3). This resistor (R1) and the capacitor r/D31 can set the filament's energization time, which is about 20 seconds. Of course, if the closing time of the switch 6e is longer, the time will increase accordingly. Also, due to this discharge, the output of the AND circuit changes from high level to low level, but at that time, the threshold level of the Oo path R varies, so the output of the AND circuit! 621
When the output of the circuit I2 becomes low level, the charge on the capacitor So is rapidly dropped to the ground via the circuit I2, thereby eliminating variations. When the output of the AND circuit 16 becomes low level, both transistors 16411υ become non-conductive, and the current flow to the filament is stopped.

(g) Effects of the Invention As described above, the present invention can limit the energization time of the ignition heater, prevent unnecessary electric power, and extend the life of the ignition heater. Moreover, even if the switch operated to ignite the ignition peak is only slightly closed, the ignition heater can be energized for a predetermined period of time, so the operation is reliable and can be used with peace of mind.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of a kerosene stove to which the igniter of the present invention is applied, Fig. 2 is a front view of the kerosene stove, Fig. 3 is an exploded perspective view of the core guide tube and cylinder, and Fig. 4 is an earthquake sensor. A longitudinal front view to illustrate the device, FIG. 5 shows a control circuit diagram for ignition including a timer circuit.翰... Core guide tube, (to)... Ignition heater, ■・
...Lamp wick, four...wick guide outer cylinder, ciS...ignition operating member, □□□...switch, 61...timer circuit.

Claims (1)

[Claims] (1) An ignition heater for igniting a wick that is movable up and down between a wick guide tube and a wick guide outer tube; a switch that closes when the ignition is operated; and closing the switch causes the ignition heater to ignite for a predetermined period of time. An ignition device for an kerosene stove, comprising a timer circuit for energizing.