JPH02197706A - Kerosene burner - Google Patents

Abstract

PURPOSE:To operate a fan not excessively nor insufficiently for reducing odor after fire extinguishing and attempt to enhance pleasantness by providing a thermo-sensitive switch at a position to cope with the temperature of an outer fire plate and making it possible to set the operation time of the fan for discharging the air in an oil tank to the atmosphere by said switch. CONSTITUTION:A switch 25 on one side that is installed in an electric power supply circuit to a fan motor 24 is installed near a wick lifting and lowering mechanism, and the switch 25 is changed over from opening to closing when a wick 15 is lowered. A switch 26 on the other side is a thermo-sensitive switch and installed on the side face of a wick outer cylinder 13. The switch 26 closes when the temperature of the wick outer cylinder 13 rises above a set value with the temperature of the outer fire plate 13a and closes when the temperature of the wick outer cylinder 13 falls below the set value. When the combustion is started by lifting the wick 15, the switch 25 is changed over from closing to opening. When the fire plate temperature rises as the combustion proceeds, the switch 26 is changed over from opening to closing. If, in this state, the wick 15 is lowered and the fire is extinguished, the switch 26 is changed over from opening to closing, and a motor 24 is supplied with electricity from a dry battery 30 and a fan 23 starts rotating, and it continues to run until the temperature of the outer fire plate 13a that is detected by the switch 26 falls below a set value.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an oil combustor such as an upper and lower wick type.

BACKGROUND OF THE INVENTION Conventionally, as shown in FIG. 6, a gas suction means 2 made of a turbo fan or the like is provided in an oil combustion unit of a top-and-bottom type oil combustion system, communicating with the upper space of an oil tank l, as shown in FIG. There is a structure in which the means 2 is configured to be activated when the wick 3 is lowered to extinguish the fire, so that the odor of petroleum vapor at the time of extinguishing the fire is greatly reduced in acidity. That is, when the fire is extinguished by lowering the wick 3, the draft caused by the operation of the suction means 2 causes
The petroleum vapor that is still flowing into the hot combustion tube 4 and is about to be thermally decomposed and turned into odor is sucked into the upper space of the oil tank 1, and released into the atmosphere from the exhaust port 5 without being thermally decomposed. As shown in Figure 7, it has become common to see products that emit a pungent fire extinguishing odor.
When combustion is started, the switch 7 is switched to the power supply side, charging the capacitor 8, and at the same time as extinguishing the fire, the switch 7 is switched to the 7a side, the transistor 9 is made conductive by the voltage of the capacitor 8, and the current from the power supply 10 is turned on to the motor. Flows to 11,
Drive the odor absorption fan. This continues for a certain period of time until the discharge of the capacitor 8 is completed, and when the discharge of the capacitor 8 is completed, the transistor 9 is opened and the motor 11 is stopped. With the above-described configuration, the motor 11 is driven for a predetermined period of time that is initially set after the completion of combustion.

Problems to be Solved by the Invention However, the time taken for the extinguishing odor of the oil combustor to occur changes depending on the combustion surrounding temperature. Therefore, if the drive + J + time of the suction means 2 is fixed constant as in the conventional case, the drive of the suction means 2 will be unnecessarily long in strong twist firing where the temperature of the fire pan 6 is low, and in weak combustion where the temperature of the fire pan 6 is high, after extinguishing. There was also the problem that the odor remained. In addition, if the driving time is set to be long in accordance with the odor that often occurs during weak combustion, the suction means 2 will needlessly be driven for a long time during strong twist firing, and the sound of the suction means 2 will be long and unpleasant, and the power supply will be cut off. The battery life is also shortened, and the suction means 2 continues to rotate for a certain period of time even if there is a mistake in the operation of the operating lever to ignite the wick 3, or even if the ignition is extinguished immediately after ignition and almost no extinguishing odor is generated. The present invention has been made in view of these points, and aims to solve the above-mentioned problems, to ensure that the suction means operates properly in the low range of extinguishing odor, and to improve the pleasantness of oil-burning appliances. It is something to do.

Means for Solving the Problems In order to achieve the above object, the present invention provides a heat-responsive switch at a position corresponding to the temperature of the outside pan, and also absorbs the air inside the oil tank into a passage that communicates the inside of the oil tank with the atmosphere. A suction means is provided, and the operation time of the suction means can be set by a thermally responsive switch.

Effect The present invention has the above-mentioned configuration, so that the driving time of the suction means changes depending on the combustion temperature, such as being short for strong twist firing (or longer for weak combustion), and the extinguishing signal is not activated when the temperature is extremely low. Even in this case, the suction means is not operated, which is 1tIII control.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

In FIG. 1, 11 is an oil tank, and 12 is an oil tank 11.
A vertically installed core guide tube, 13 is a core outer tube fixed on the oil tank ll, 14 is a core gap formed by the core guide tube 12 and core outer tube 13, and I5 is provided within this core gap 14. The tip of the wick is exposed to an appropriate extent above the inner and outer cooking pans 12a and 13a of the core guide tube 12 and outer core tube 13, respectively. Reference numeral 17 denotes a combustion cylinder consisting of an outer cylinder and an inner cylinder having a large number of air holes, which is mounted on an inner fire plate 12a and an outer fire plate 13a, and inside the combustion cylinder, petroleum vapor generated from the fuel vaporization part of the wick 15 and Configured to combust a mixture of air and gag. 18 is a suction means consisting of a turbo fan etc. fixed on the oil tank +1;
The air in the upper space 11a of the oil tank +1 is sucked and discharged through a suction port 19 formed on the upper surface of the oil tank +1, and its configuration will be explained below. A fan case 20 covers the suction port 19 of the oil tank 11, and forms a passage 22 that communicates the inside of the oil tank 11 with the atmosphere 21. 23 is this passage 2
The fan is installed in the middle of the fan case 20 and is driven by a motor 24 attached to the fan case 20.

FIG. 2 shows a drive circuit for the motor 24. In this circuit, 25 and 26 are switches connected to the power supply circuit to the motor 24. One switch 25 is provided near the core up/down mechanism and is connected to the core +5. When lowered, it switches from open to closed. The other switch 26 is a thermally responsive switch, and as shown in FIG.
It is attached to the side and the closed side or open side can be selected depending on the temperature of this part. That is, the switch 26
is turned on (closed) when the temperature of the core outer cylinder 13 rises above the set value according to the temperature of the outer fire pan 13a, and turns off when it falls.
(open). Is 30 in the figure dry? It's an IT pond.

In the above configuration, when the wick 15 is raised to start combustion, the switch 25 changes from closed to open. When the temperature of the fire pan rises with combustion, the switch 26 changes from open to closed. In such a state, when the wick 15 is lowered to extinguish the fire, the switch 25 switches from open to closed, and the switch 26
Since the is already closed, electricity is supplied to the motor 24 from the dry battery 30, and the fan 23 starts rotating. This rotation of the fan 23 continues until the temperature of the switch 26 falls below the set value and opens. In other words, the fan 23 is activated by the outer fire pan 13a detected by the switch 26 from when the wick 15 is lowered.
Electricity is supplied from the dry cell battery 30 and the rotation continues until the temperature of the battery falls below the set value. Here, FIG. 3 shows the relationship between the temperature of the outer fire pan 13a and the odor during extinguishing. As can be seen from this figure, the higher the outside fire pan temperature 'rα, the greater the odor α during extinguishing. According to the above configuration, since the switch 26 is installed at a position corresponding to the outside fire pan temperature, the higher the fire pan temperature is, the longer the operation time of the suction fan 23 becomes.

FIG. 4 shows this relationship by showing how the grate temperature decreases after the fire is extinguished in weak combustion where the grate temperature is high and strong combustion where the grate temperature is low. If the allowable 1ij fire odor is α, then the fire pan temperature T
It is sufficient to rotate the suction fan until α is reached, and the time is Lβ for strong combustion and Lα for weak combustion. According to the above configuration, by providing the thermally responsive switch 26 at a position corresponding to the temperature of the external cooking pan, the above control can be easily performed.

Next, another embodiment of the present invention will be described using FIG. Note that the same parts as in the embodiment of FIG. 1 are given the same reference numerals and detailed explanations are omitted. In FIG. 5, the thermally responsive switch 26 is configured to directly measure the temperature of the outer fire pan 13a without using the core outer cylinder 13.

Compared to the first embodiment, accurate control without delay can be performed using Ig that directly measures the temperature of the outer fire pan 13a.

In each of the above embodiments, the switch 26 was explained using a mechanical bimetal switch as an example, but this is an electronic circuit switch that detects the temperature of the pan using a thermistor and opens and closes based on the detected output. Of course, it may be.

Effects of the Invention As described above, according to the present invention, the driving time of the suction means can be optimally controlled, and the driving time of the suction means is too long, causing noise, shortening the battery life, or conversely. This eliminates the possibility that the suction means is driven too short and odor is generated after the suction means is stopped.

In addition, it is possible to perform ideal control that greatly improves battery life, such as preventing malfunctions when igniting or extinguishing the fire immediately after ignition, in situations where there is almost no need to drive the suction means. can.

In addition, if the control of the present invention is directly controlled using a bimetal type heat-responsive swing as in the first and second embodiments, it is possible to control the suction fan with good performance at a lower cost than conventional control. can.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of essential parts showing an embodiment of the oil combustor of the present invention, Fig. 2 is a circuit diagram of the same, Fig. 3 is a diagram of the relationship between the temperature of the external fire pan and extinguishing odor, and Fig. 4 is the external fire pan. Figure 5 is a perspective view of a heat-responsive switch mounting part according to another embodiment of the present invention; Figures 1 and 2 are a cross-sectional view and circuit of a suction fan for a conventional oil-fired VF device; It is a diagram. 11... Oil tank, 12... Core guide cylinder, 13... Core outer cylinder, 14... Core gap, 1
5... Core, 18... Suction means, 26.
·····switch. Name of agent: Patent attorney Shigetaka Awano Haka 1iI 1
Zuyu Tariwa I2-・-te'& yen M 13-100m9) fi 14-te A! !胛I5--"The foot chart, the funeral map, the funeral map, the funeral diagram, the closing diagram at the time of the meeting (S).

Claims (2)

[Claims] (1) An oil tank with a core gap formed by a core guide cylinder and a core outer cylinder, and a wick that is arranged vertically movably within the core gap of this oil tank and burns when rising and extinguishes when falling. , a suction means for suctioning the air in the oil tank when the wick is lowered, and a thermally responsive switch provided at a position similar to the combustion temperature, and the driving time of the suctioning means is controlled by the thermally responsive switch. An oil burner made like this. (2) The oil combustor according to claim (1), wherein a thermally responsive switch is installed at a position corresponding to the temperature around the outer fire pan.