JP2847752B2 - Oil burner - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil combustor of a vertical core type or the like.

2. Description of the Related Art Conventionally, as shown in FIG. 6, a gas suction means 2 composed of a turbo fan or the like is provided in a core up-and-down type oil combustor so as to communicate with an upper space in an oil tank 1. Means 2
Is configured to operate when the fire is extinguished by the descent of the wick 3,
It can be seen that the odor of petroleum vapor during fire extinguishing is greatly reduced. That is, at the time of fire extinguishing due to the descent of the core 3, the oil vapor which is still flowing out into the hot combustion cylinder 4 and is going to be thermally decomposed to change to odor is sucked into the upper space in the oil tank 1 by the draft of the suction means 2, and is kept as it is. By releasing to the atmosphere from the exhaust port 5 without thermal decomposition,
Some have been found to significantly reduce the irritating fire odor. In this oil combustor, as shown in FIG. 7, when the combustion is started, the switch 7 is switched to the contact 7b on the power supply side to charge the capacitor 8, and when the fire is extinguished, the switch 7 is switched to the contact 7a. As a result, the transistor 9 is turned on by the voltage of the capacitor 8, and the current of the power supply 10 flows to the motor 11 to drive the odor absorbing fan. This is performed for a certain period of time until the discharging of the capacitor 8 is completed. When the charging of the capacitor 8 is completed, the transistor 9 opens and the motor 11 stops. Motor with the above configuration
11 is a motor 11 for a fixed period of time initially set after the end of combustion.
Was to be driven.

Problems to be Solved by the Invention However, the generation time of the fire extinguishing odor of the above oil combustor changes depending on the surrounding temperature of combustion. Therefore, if the driving time of the suction means 2 is fixed at a fixed value as in the prior art, the driving of the suction means 2 becomes unnecessarily long in the case of the strong combustion of the fire tray 6 at a low temperature, and the odor remains even after the fire is extinguished in the weak combustion of the fire tray 6 at a high temperature. There was a problem that remains. Further, if the driving time is set to be long according to the odor generated during the weak combustion, the driving of the suction means 2 is unnecessarily long in the strong combustion, so that the sound of the suction means 2 is long and gives an unpleasant feeling. Battery life is also shortened. Further, there is a problem that the suction means 2 continues to rotate for a set period of time even when the operation lever for igniting the core 3 is erroneously operated or the fire is extinguished immediately after the ignition and the fire extinguishing odor is less generated.

The present invention has been made in view of such a point, and an object of the present invention is to solve the above-mentioned problems, to operate the suction means without any excess or shortage to reduce the fire odor, and to improve the comfort of the oil combustor.

Means for Solving the Problems In order to achieve the above object, the present invention provides an oil tank having a core gap formed by a core guide cylinder and a core outer cylinder, and an oil tank arranged vertically movable within the core gap of the oil tank. A wick that burns when rising and extinguishes fire when descending, a timer that operates when the wick descends, a heat-responsive switch provided on an outer fire plate at a position similar to the combustion temperature, and suction means that sucks air in the oil tank When the heat responsive switch is in the closed state at the time of core descent, the suction means secures operation for at least an operation time corresponding to a predetermined outside fire tray temperature, and operates the heat responsive switch. Regardless of the open / closed state, the timer operates for a predetermined period of time.

Effect of the Invention With the above configuration, according to the above configuration, the combustion time is long, the driving time of the suction means is short in the strong combustion and long in the weak combustion during the fire extinguishing operation when the thermally responsive switch is in the closed state. So that it changes according to the outside fire temperature
In addition to the effective suction operation, the timer operates for a certain period of time to eliminate the odor immediately after ignition even when the combustion time after ignition is short and the heat responsive switch is not closed.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, 11 is an oil tank, 12 is a lead guide tube erected on the oil tank 11, 13 is a lead outer tube fixed on the oil tank 11,
Reference numeral 14 denotes a core gap formed by the core guide cylinder 12 and the core outer cylinder 13, and reference numeral 15 denotes a core provided in the core gap 14, and the inner fire tray 12a and the outer fire tray of the core guide cylinder 12 and the core outer cylinder 13, respectively. The tip is appropriately exposed above 13a. Reference numeral 17 denotes a combustion cylinder comprising an outer cylinder having a number of air holes and an inner cylinder, which is mounted on the inner fire tray 12a and the outer fire tray 13a, and inside which the oil vapor and the air generated from the combustion vaporization portion of the wick 15 are removed. It is configured to burn the mixed gas. Reference numeral 18 denotes a suction means composed of a turbo fan or the like fixed on the oil tank 11, which sucks and exhausts the air in the upper space 11a of the oil tank 11 from a suction port 19 formed on the upper surface of the oil tank 11. The configuration will be described. 20
Is a fan case covered on the suction port 19 of the oil tank 11,
A passage 22 for communicating the inside of the oil tank 11 with the atmosphere 21 is formed. Reference numeral 23 denotes a fan provided in the middle of the passage 22, which is driven by a motor 24 mounted on the fan case 20.

FIG. 2 shows a control circuit (control section) of the motor 24,
Switches 25 and 26 of this circuit are connected to the power supply circuit to the motor 24, and one switch 25 is provided in the near chamber of the core lifting mechanism and switches from open to closed when the core 15 is lowered. It has become. The other switch 26 is a thermally responsive switch, as shown in FIG. 1, which is mounted on a position for detecting a temperature similar to the combustion temperature, for example, on the side surface of the core outer cylinder 13, and opens and closes depending on the temperature of this portion. The side is to be selected.

That is, the switch 26 is turned on (closed) when the temperature similar to the combustion temperature according to the temperature of the outer fire tray 13a, for example, the temperature of the core outer cylinder 13 rises above a set value, and turns off when the temperature falls.
(Open). Reference numeral 31 denotes a switch that switches to a contact 31b on the power supply side when combustion starts, charges the capacitor 33, and at the same time as the fire extinguishes, the switch 31 switches to the contact 32a to make the transistor 34 conductive by the voltage of the capacitor 33. The current of 30 flows to the motor 24 to drive the odor absorbing fan. This is performed for a fixed time until the discharge of the capacitor 33 is completed. When the discharge of the capacitor 33 is completed, the transistor 34 is opened and the motor 24 is stopped. With the above configuration, the motor 24 drives the motor 24 for a predetermined period of time initially set after the fire extinguishing to absorb the fire extinguishing odor, even if the temperature of the thermal responsive switch 26 does not rise immediately after the fire is extinguished. In the figure, reference numeral 30 denotes a dry battery.

In the above configuration, when the wick 15 is raised to start combustion, the switch 25 is changed from closed to open. When the temperature of the fire tray rises with the combustion, the heat responsive switch 26 is closed from open. In such a state, when the wick 15 is lowered to extinguish the fire, the switch 25 is switched from open to closed, and the thermoresponsive switch 26 is closed.
Is already closed, electricity is supplied from the dry battery 30 to the motor 24, and the fan 23 starts rotating. This fan 23
Is continued until the temperature of the thermoresponsive switch 26 drops below the set value and opens. That is, the fan 23 is supplied with electricity from the dry battery 30 until the temperature of the outer fire tray 13a detected by the thermally responsive switch 26 becomes equal to or lower than the set value when the core 15 is lowered, and continues to rotate. Here, FIG. 3 shows the relationship between the temperature of the outer fire tray 13a and the generation of odor during fire extinguishing. As can be seen from this figure, the higher the outside fire tray temperature Tα, the greater the odor generation α during fire extinguishing. According to the above configuration, the thermally responsive switch 26
Is installed at a position corresponding to the temperature of the outside fire tray,
The operation time of the suction fan 23 becomes longer as the fire tray temperature becomes higher.
FIG. 4 shows the relationship between the low temperature of the hot plate after the extinguishing and the low temperature of the hot plate and the strong combustion of the low temperature. Assuming that the allowable firefighting odor is α, the fire tray temperature Tα
It is sufficient that the suction fan is rotated until the time becomes, which is tβ for strong combustion and tα for weak combustion. That is, when the heat responsive switch is in the closed state, the operation time of the suction fan should be at least a temperature similar to the combustion temperature, for example, the operation time corresponding to the fire tray temperature should be at least tβ for strong combustion, and at least tα for weak combustion. I have to. According to the above configuration, the control can be easily performed by providing the thermally responsive switch 26 at a position corresponding to the temperature of the outside fire tray. Also,
Until the temperature of the heat responsive switch 26 rises sufficiently, such as after a fire immediately after ignition, the suction operation time corresponding to the outer fire tray temperature Tα that satisfies the allowable fire extinguishing odor α is set to a certain time by a timer circuit. Turn 24 to reduce fire odor.

Next, another embodiment of the present invention will be described with reference to FIG.
The same parts as those in the embodiment of FIG. 1 are denoted by the same reference numerals, and detailed description is omitted. In FIG. 5, the thermoresponsive switch 26 is configured to directly measure the temperature of the outer fire tray 13a without passing through the core outer cylinder 13. Outside fire tray 13a compared to the first embodiment
By measuring the temperature directly, accurate control without delay can be performed.

In each of the above embodiments, the case where the switch 26 is constituted by a mechanical bimetal switch has been described as an example, but this is an electronic circuit switch that detects the temperature of the fire tray with a thermistor and opens and closes based on the detected output. Of course, it is possible.

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 of the suction means is too long, resulting in noise, shortening the battery life, and conversely, of the suction means. The drive is so short that no odor remains even after the suction means is stopped. Further, even when the fire is extinguished immediately after ignition and the temperature of the heat responsive switch has not risen, the timer circuit can be used to rotate the drive motor for a certain period of time to control the generation of odor and control the battery life to be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of an essential part showing an embodiment of the oil combustor of the present invention, FIG. 2 is a circuit diagram thereof, FIG. 3 is a diagram showing the relationship between the temperature of a fire tray and fire extinguishing odor, and FIG. Time change diagram of fire plate temperature, 5th
FIG. 6 is a perspective view of a heat-responsive switch mounting portion according to another embodiment of the present invention, and FIGS. 6 and 7 are a sectional view and a circuit diagram of a suction fan of a conventional oil combustor. 11 ... Oil tank, 12 ... Core guide cylinder, 13 ... Core outer cylinder, 14 ...
... core gap, 15 ... core, 18 ... suction means, 26 ... switch.

Continuation of the front page (56) References JP-A-61-130709 (JP, A) JP-A-61-130711 (JP, A) JP-A-62-119324 (JP, A) JP-A-62-119325 (JP, A) , A) Japanese Utility Model Showa 62-54514 (JP, U) Japanese Utility Model Showa 63-90712 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F23D 3/18 F23Q 25/00 355

Claims (1)

(57) [Claims] 1. An oil tank having a core gap formed by a core guide cylinder and a core outer cylinder, and a core disposed vertically movable within the core gap of the oil tank to burn when rising and extinguish a fire when descending. When,
A timer that operates when the core is lowered, a heat-responsive switch provided on an outer fire plate at a position similar to the combustion temperature, and suction means for sucking air in the oil tank; When in the closed state, at least the operation time corresponding to the operating time corresponding to the predetermined outside fire temperature is ensured, and regardless of the open / close state of the heat responsive switch, the timer is used for a predetermined constant time. Petroleum combustor made to work.