JPH02110203A - Up-and-down wick type kerosine stove - Google Patents

Abstract

PURPOSE:To produce a low-cost motor-suction type device for reducing odor at the time of extinguishment by using a mechanical timer based on a speed reducer directly connected with a motor as a timer for energizing the motor for a set time after extinguishment of fire. CONSTITUTION:A mechanical timer 8 comprises a speed reducer 5, cam 6, and cam switch 7. The cam 6 operates the cam switch 7. An ignition heater 10 or a motor 4 carry no current during the combustion. When the fire is put out, a switch 12 interlocking with an up-and-down wick is reset to turn on the motor 4. After a specified revolution (for a specified time) of a fan 3, a part B of the cam 6 resets the cam switch 7 to restore the condition of no combustion. In extinguishing the fire, the kerosine gas is drawn from the upper space in a stationary tank 1 into a suction opening 2a, passed through a fan casing 2, and discharged out of the tank 1 through an outlet 2b.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an upper-and-lower wick kerosene stove equipped with an odor reduction device during extinguishing, which sucks kerosene gas around the wick using a fan motor and discharges it outside the main unit. It is something.

Conventional technology What is the motor suction type fire extinguishing odor reduction device?
This is described in Japanese Patent No. 743, and the general idea is to discharge kerosene gas around the wick out of the main body via a fuel tank using a fan motor when extinguishing a fire. In addition, a timer is installed to rotate this fan motor for a predetermined period of time after extinguishing the fire and then stop it.
It is shown in Publication No. 40017.

Problems to be Solved by the Invention The electronic timer shown in the above-mentioned Japanese Utility Model Publication No. 61-154410 is an electronic timer that operates on dry batteries, and the circuit is difficult to construct because it compensates for voltage fluctuations of the dry batteries and operates at a low voltage. It's complicated and expensive.

Furthermore, the device disclosed in Japanese Patent Application Laid-open No. 61-240017 is susceptible to the effects of wind, room temperature, and malfunctions due to abnormalities such as falling.
Considering the heat resistance of the lead wire, etc., it is difficult to determine what temperature should be detected, and there is currently no product that has been commercialized.

An object of the present invention is to stop the fan motor after a predetermined period of time has elapsed after extinguishing a fire without using an electronic timer or thermostat.

Means for Solving the Problems The above object is achieved by using a mechanical timer that utilizes the rotation of a fan motor.

It can be used as a mechanical timer by providing a speed reducer on the unused shaft side of the fan motor and a cam switch that operates after the motor has rotated a predetermined amount.

Example An embodiment of the present invention will be described below with reference to the drawings.

Figure 1 shows the fan motor part, where the fan casing 2 is placed on top of the fixed tank 1 of the upper and lower core oil pump.
is attached, and a kerosene gas suction port 2a is provided on the bottom surface, and a discharge port 2b is provided on the top surface.

A fan 3 is disposed inside the fan casing 2, and the fan 3 is directly connected to the shaft of a motor 4 fixed to the upper surface of the fan casing 2. A reducer 5 is attached to the shaft at the other end of the motor 4.
(worm gears, multistage combinations of gears, etc.) are directly connected. The cam 6 rotates the fan 3 at a predetermined speed (
It is designed to rotate once per predetermined time.

The cam switch 7 is operated by the cam 6. FIG. 2 is a view of an example of the cam 6 and the cam switch 7 as viewed from the axial direction of the cam 6, and shows the operation of the cam switch 7.

In this invention, these reducers 5. Cam 6, cam switch 7
This constitutes the mechanical timer 8.

FIG. 3 is an example of an electric circuit diagram, in which a dry battery power source 9, an ignition heater 10, and an ignition switch 11 are connected in series.

A power supply 9, a motor 4, a core vertical interlocking switch 12, and a cam switch 7 are connected in series to this series circuit. FIG. 4 shows the operation of FIG. 3, and when the stove is not burning, the motor 4 and the ignition heater 10 are not energized as shown in FIG. 4 (a). Next, when raising the core, the fourth
As shown in Figure (b), the core up/down interlocking switch 12 operates, the motor 4 rotates, and the cam switch 7 is moved to the start position (
Figure 2 A).

The motor 4 rotates in order to switch the cam switch 7, and only takes a short time. When the motor reaches the start position, the cam switch 7 operates to turn off the power to the motor 4. During ignition, the ignition switch 11 is turned on as shown in Figure 4 (c).
The ignition heater 10 is energized and the wick is ignited. During combustion, the ignition heater 10 and motor 4 are not electrically connected, as shown in FIG. 2(d). When the fire is extinguished, the wick up/down interlocking switch 12 returns to its original state as shown in FIG.
(see Fig. 2) returns the cam switch 7 to the non-burning state shown in Fig. 4 (a). The kerosene gas at the time of extinguishing the fire enters the suction port 2a from the upper space of the fixed tank 1, passes through the fan casing 2, and is discharged to the outside of the main body 1 from the discharge port 2b.

Effects of the Invention The present invention uses a mechanical timer, and can provide a motor suction type fire extinguishing odor reduction device that is cheaper than an electronic timer. In addition, it uses a switch linked to the top and bottom of the wick, so unlike electronic timers, there is no chance of boiling over on the printed circuit board and causing the motor to rotate during combustion. In conventional products, the operating voltage of the electronic circuit (current product 1.5V) is much higher than the motor starting voltage (current product actual performance O, SV), so the battery life is determined by the operating voltage of the electronic circuit, but mechanical timers The battery life is determined by the starting voltage, and the battery lasts a long time.

[Brief explanation of drawings]

Fig. 1 is a partial vertical sectional view showing a part of a fan motor and mechanical timer according to an embodiment of the present invention, Fig. 2 is a side view showing an example of the same cam and cam switch, and Fig. 3 is the same electric circuit. 4(a), (b), (c), (d), and (e) are circuit diagrams showing the operation of FIG. 3. 1 is a fixed tank, 2 is a fan casing, 3 is a fan,
4 is a motor, 5 is a speed reducer, 6 is a cam, 7 is a cam switch, 8 is a mechanical timer, 10 is an ignition heater, 11 is an ignition switch, and 12 is a core vertical link switch.

Claims (2)

[Claims] (1), a fan (
3) In a wick type kerosene stove equipped with a fire extinguishing odor reduction device that sucks kerosene gas around the wick and discharges it outside the main body, a timer that energizes the motor (4) for a predetermined period of time after extinguishing operation. A kerosene stove with an upper and lower wick, characterized in that the device is a mechanical timer (8) using a speed reducer (5) directly connected to the motor (4). (2) The core vertical oil type petroleum oil according to claim (1), characterized in that the motor (4), the cam switch (7), and the core vertical interlocking switch (12) are connected in series to the power source (9). Stove.