JPS61128028A - Forced oil feeding type kerosene stove - Google Patents

Abstract

PURPOSE:To enable an emergency diminishing of fire in case of occurrence of falling accident by a method wherein kerosene is fed to a gasification element and burned in a combustion cylinder and at the same time an instantaneous fire diminishing device operated under an abnormal condition is arranged between the oil feeding pump and the gasification element. CONSTITUTION:When a petroleum stove is fallen or vibrated more than the desired value, a sensing body 35 supported by a supporting body 41 is moved as indicated by an arrow, a latch 42 is also oscillated and the lever 43 is varied out a dotted line position and disengaged. Then, a switch 47 is turned OFF and the oil feeding pump 7 is stopped and at the same time the other end 45 is also moved to the dotted line position. An operating body 37 is extended by its own resilient force, its inner volume is increased to cause the kerosene in the oil feeding pipe 8 to be sucked into the operating body 37. The kerosene is rapidly passed in the flow passage 48 in the valve body 38, the loss in pressure at this time causes the valve body 38 to be moved against the spring 39 to close the valve seat 40. The suction of the oil from the oil feeding pump is stopped and all the kerosene is sucked from the gasification element, resulting in eliminating the kerosene in the gasification element and the flame is instantaneously diminished.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a kerosene stove that heats a living space by burning kerosene.

Conventional technology A conventional kerosene heater has a kerosene tank 1 as shown in Figure 7.
A lamp wick 3 made of cotton or glass fiber fabric is brought into contact with the kerosene surface 2 in the chamber, and the kerosene that rises due to the liquid suction action of this wick 3 is vaporized and burned by the heat of the combustion tube 4. Therefore, in order to stop combustion, the lever 5 that is integrated with the wick 3 is moved downward to move the wick 3 away from the combustion tube 4, minimizing the vaporization of kerosene, and at the same time stopping the air supply to the wick 3. I achieved it by doing so.

Problems to be Solved by the Invention However, in the above configuration, the lamp wick 3 is not connected to the lever 5.
Even if the temperature is lowered, the vaporization of kerosene does not stop immediately due to the surrounding heat capacity, and the combustion tube is also heated, so the vaporized gas comes into contact with the combustion tube, heats it up, and causes a foul odor. This is considered to be the biggest drawback of kerosene stoves.

The present invention solves such conventional problems, and also aims to provide a means for extinguishing an emergency fire in the event of an accident overturning a kerosene stove so that no foul odor will be generated even if the stove is extinguished.

Means for Solving the Problems In order to solve the above problems, the forced lubrication type kerosene stove of the present invention forcibly supplies kerosene with a pressured oil supply pump, and the supplied kerosene is fed through a vaporizing element. At the same time, an instant fire extinguishing device is installed between the fuel pump and the vaporizing element to operate in the event of an abnormality.

Function The present invention has the above-described configuration, so that the kerosene is fed to the vaporizing element by the fuel pump, so the amount of kerosene contained in the vaporizing element can be extremely reduced, and the supply of kerosene is immediately stopped when the fuel pump is stopped. Since the combustion stops without changing the vaporization status of the vaporizing element, there is no vaporization of kerosene after combustion stops like in the wick type, and therefore, comfortable heating can be obtained without causing bad odors. It becomes.

Furthermore, in the event of an abnormality such as an earthquake or an accident, it is necessary to quickly extinguish the fire, so an instant fire extinguisher is activated to immediately suck out the kerosene remaining in the vaporizing element, eliminating the odor. This increases safety during digestion.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. In FIG. 1, a kerosene tank 1 is configured to be supplied with kerosene from a cartridge tank 6 and to form a constant oil level. (This is usually widely used in kerosene heaters and is a well-known technique.) Furthermore, in the kerosene tank 1, the kerosene is placed below the surface.

An oil supply pump 7 having a suction port is provided, and an oil supply pipe 8
is connected to send kerosene to the combustion section 9. Further, an instantaneous fire extinguishing device 33 is provided in the middle of the oil pipe 8 and configured to allow kerosene to pass through the inside.

In FIGS. 2A and 2B, a porous vaporizing element 10 made of foamed metal or the like having air holes is embedded in the upper surface of the combustion section 9, and its tip 11 faces into the combustion tube 4. Further, the oil supply pipe 8 is connected to an annular oil supply groove 12 provided in the vaporizing element 10 and is stopped at the end. That is,
All of the kerosene from the oil pipe 8 is sent out through the pores of the vaporizing element 10. Bunching metal r is used in the combustion section 9.
The combustion cylinder 4 supported by the sills 13 is placed on it without being fixed. Combustion air is supplied from space 14.15. The igniter 16 is fixedly installed near the tip 11, and the temperature sensor 17 can detect the temperature of the combustion cylinder 4.
It is provided and fixed near the punching membrane 13 so as to receive thermal radiation. The recover pipe 18 is provided on the lower surface of the vaporizing element 10 and is arranged so as to return the kerosene discharged from the lower surface of the vaporizing element 10 to the kerosene tank 1.

FIG. 3 shows an embodiment of the oil supply pump 7 using a bimorph element, in which a suction port 20 provided in the pump body 19
and a discharge port 21 , and the discharge port 21 is connected to the oil pipe 8 . A reversal valve 22 is provided at the suction port 21, and a check valve 23 is provided at the discharge port 21, and these are communicated with each other through a pump chamber 24.

A sealing material 25 is attached to the pump body 19 facing the pump chamber 24.
By applying an alternating current voltage to this bimorph element 26, the volume of the pump chamber 24 is increased or decreased by the bending movement of the bimorph element 26, and this volume change is reflected by the reverse valves 22 and 23. It rectifies the flow and performs a pumping action. The alternating current voltage is generated according to the principle shown in the block diagram of FIG. The voltage of the battery 27 is increased to a predetermined value by a booster circuit 28, converted into an AC voltage signal by an oscillator 29, and then adjusted by a voltage amplifier 30 to obtain a desired voltage value. The voltage value to be adjusted is commanded by the amplification rate regulator 31. A signal 32 from the temperature sensor 17 is applied to an amplification rate regulator 31, and the voltage applied to the bimorph element 26 is adjusted according to the temperature of the combustion tube 4. This depends on the circuit settings, but
The present invention is designed to lower the voltage of the bimorph element 26 and reduce the pump flow rate when the temperature is low, and to increase the voltage when the temperature rises.

The instantaneous fire extinguishing device 33 includes an operating section 34 shown in FIG. 5 and a sensing section 35 shown in FIG. 6. Inside the operating section 34, there is a chamber 36 communicating with the oil pipe 8 and an operating body 37 communicating with the chamber 36.

The actuating body 37 is made of a metallic elastic body commonly called a bellows, and is hollow inside. A valve body a8 is present on the oil supply pump T side of the oil pipe 8, and is kept open at all times by a spring 39. The valve body 38 is arranged so as to close the valve seat 40i. In FIG. 6, the sensing portion 36 is configured to be movable around the support 41 and supported by a latch 42 against the lever 4a. The lever 43 rotates around a fulcrum 44, and the fulcrum 44 is fixed to the operating section 34. The lever 43 is made to engage the latch 42 at one end and compress the actuating body a7 at the other end 45f'i. The latch 42 is also arranged to operate a switch 47 that opens and closes the contact 46.

The operation will be described based on the above configuration.

When the battery 27 is turned on, the fuel pump 7 works and the vaporizing element 1
Kerosene is sent to o. Kerosene is deposited on the tip 11 through the 1° pores of the vaporizing element, and is vaporized and ignited by the igniter 16. When combustion begins, combustion air is sucked in by natural draft from the spaces 14 and 15, and is combusted in the combustion tube 4. The sensing part 35 in FIG. 6 is always perpendicular to the support 41, the switch 47 is turned on in this state, and the actuating body 37 is connected to the lever 41.
3 is compressed at the other end 45. At the beginning of combustion, vaporization element 1
0 and the combustion tube 4 are cold, so there is little vaporization. If enough kerosene is sent in this state, the unvaporized kerosene will cool the tip 11"f of the vaporizing element 1o, and combustion may be stopped. Therefore, the temperature The sensor 17 detects the temperature of the combustion cylinder 4 and applies feedback to the fuel pump 7 so as to supply the optimum amount of kerosene for the amount of vaporization.

In other words, when the temperature of the combustion tube 4 is low and the amount of vaporization is small, the amount of kerosene is decreased, and when the temperature of the combustion tube 4 rises and the amount of vaporization increases, the amount of kerosene is controlled to be increased, thereby ensuring stable combustion at all times.・0 Next, when combustion is to be stopped, when the battery 27 is turned off, the fuel supply from the fuel pump 7 is stopped and the remaining kerosene in the vaporizing element 10 is
Although it continues to vaporize, combustion continues and only stops when all of the kerosene is used up. During this time, combustion occurs, so no unburned gas is produced, and no foul odor is produced even after digestion.

However, there are problems with this phenomenon. That is, even if the fuel pump 7 stops, the residual kerosene in the vaporizing element 10 continues to burn, so the fire does not go out immediately.

This is extremely dangerous if the kerosene heater falls over due to an accident or the like. Therefore, in the present invention, instant fire extinguishment is performed by the following operation.

When the kerosene stove falls over or vibrates more than necessary, the sensing section 35 supported by the support body 41 moves in the direction of the arrow. Then, the latch 42 also swings and the lever 43 changes to a dotted line, as if it were released. Then, the switch 47 is turned off and the oil supply pump 7 is stopped, and at the same time, the other end 45 also changes to the position indicated by the dotted line.

Since the actuating body 37 expands due to its own elastic force, its internal volume increases and the kerosene in the oil pipe 8 is sucked into the actuating body 37. Then, kerosene suddenly tries to pass through the flow path 48 in the valve body 38, but the pressure loss at this time causes the valve body 38 to move against the spring 39 and close the valve seat 40. Then, the suction from the fuel pump 7 is stopped, so all the kerosene is sucked from the vaporizing element 10, the kerosene in the vaporizing element 10 runs out, and the fire is instantly extinguished. The movement of the valve body 38 is handled by the design of the spring 39 and the flow path 48 so that it does not move with the normal amount of kerosene in the fuel pump 7. The reason why the valve body 38 is necessary is that enough kerosene can be sucked in from the vaporizing element 1° to prevent kerosene from being sucked in from the fuel pump 7 side, and the extinguishing speed can be increased.

Once activated, the instantaneous fire extinguishing system (33) can be restarted manually.

The reason why bimorph is used for the fuel pump 7 is that it has extremely low power consumption and can be used for a sufficiently long time with the electrical capacity of a battery.
This is to fully enhance the advantage of ensuring durability.

Effects of the Invention As described above, the forced lubrication type kerosene stove of the present invention provides the following effects.

(1) Kerosene is supplied by a pump, and all of the kerosene in the vaporizing element vaporizes and extinguishes the fire, eliminating the odor caused by unburned gas when extinguishing the fire.

(2) When it is necessary to extinguish a fire in an emergency, the kerosene inside the vaporizing element is removed by the instant fire extinguishing device, so the fire can be extinguished quickly.
It's safe.

(3) Since a Vimo Lev is used for the fuel pump, power consumption is low, and a kerosene stove with good balk pull performance using batteries can be provided.

[Brief explanation of the drawing]

Fig. 1 is an external plan view of a forced refueling oil stopper according to an embodiment of the present invention, Fig. 2 is a sectional view of the combustion section and combustion tube, and Figs. A plan view and a side cross-sectional view of the hot water pump used, Figure 4 is a profile diagram of the power supply for the fuel pump using batteries, Figure 5 is a partial cross-sectional view of the instantaneous fire extinguishing system, and Figure 6 is the instantaneous fire extinguishing system. Fig. 7 is a partial sectional view of a conventional kerosene stove. 1...kerosene tank, 4...combustion cylinder, 7...
...Oil supply pump, 8...Oil pipe, 10...
... Vaporizing element, 16... Igniter, 17...
Temperature sensor, 19 pipe pump main body, 26...bimonoreff element, 33...instantaneous fire extinguishing device, 36...
...Sensing section, 37...Operating body, 3B...
・Valve body. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure B2 Lower Figure 3 Figure 4 Figure 5 at --- Support Figure 7

Claims (2)

[Claims] (1) A fuel pump that sucks up kerosene from the kerosene tank and sends it to the vaporization element, a combustion tube that mixes air with the vaporized kerosene from the vaporization element by natural convection and burns it, and a space between the fuel pump and the vaporization element. A forced lubrication type kerosene stove, which is equipped with an instantaneous extinguisher that detects vibration or overturning of the kerosene stove and stops the kerosene pump and at the same time sucks kerosene contained in the vaporizing element. (2) The drive source of the oil supply pump is configured with a bimorph element,
The forced lubrication type kerosene stove according to claim 1, wherein the bimorph element is driven by a battery.