JPH08334224A - Oil combustion heater - Google Patents

Abstract

PURPOSE: To provide a comfortable and economical oil combustion heater restricting the generation of odor during extinguishing and lowering power consumption. CONSTITUTION: This heater is provided with a vaporization part 1 to vaporize a fuel supplied by a fuel pump 8, a nozzle part 4 to jet a fuel gas vaporized communicating with the vaporization part 1, a temperature detection means 7 to detect the temperature of the vaporization part 1, a combustion part 10 to burn a vaporized gas, a needle 5 to open or close the nozzle part 4, a solenoid 6 to drive the needle 5 and a control part 14. The control part 14 performs a control so that the solenoid 6 is energized in a specified time after the driving of the fuel pump 8 is stopped during the extinguishing to close the nozzle part 4 with the needle 5 and the electric energization of the solenoid 6 is stopped when the temperature of the vaporization part 1 falls below a specified temperature while the nozzle part 4 is opened. Thus, the generation of the vaporized gas by remaining heat of the vaporization part 1 is restricted to lower odor while shortening energizing time of the solenoid 6 thereby reducing power consumption.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a petroleum combustion heating apparatus which vaporizes a liquid fuel and jets the vaporized gas from a nozzle portion to burn it, thereby reducing the odor generated during fire extinguishing.

[0002]

2. Description of the Related Art Conventionally, a fire extinguishing odor reducing means of an oil burning heating apparatus of this type has a nozzle for ejecting vaporized gas, a needle for opening and closing the nozzle, and a needle, as disclosed in Japanese Patent Laid-Open No. 4-283306. It is equipped with a solenoid to drive the fuel pump, and when the temperature of the carburetor drops below a specified temperature after the fuel pump is stopped during fire extinguishing, the solenoid is operated to close the nozzle with a needle to prevent leakage of vaporized gas after extinguishing the fire. It is used.

[0003]

However, in the conventional combustion apparatus having such a structure, it is possible to prevent leakage of vaporized gas immediately after extinguishing a fire, but in order to reduce power consumption at the time of extinguishing fire, after a certain period of time, When the energization of the solenoid was stopped again and the nozzle was opened, the residual vaporized gas leaked and odor was generated, which was not satisfactory.

The present invention is intended to solve the above problems, and an object thereof is to provide a comfortable heating device which suppresses odors generated during fire extinguishing with low power consumption.

[0005]

In order to achieve the above object, the present invention provides a vaporization section for vaporizing fuel supplied by a fuel pump, a heater for heating the vaporization section, and a vaporization section communicating with the vaporization section. Nozzle part for ejecting the fuel gas,
Controls the temperature detecting means for detecting the temperature of the vaporizing section, the combustion section for burning the fuel gas ejected from the nozzle section, the needle for opening and closing the nozzle section, the solenoid for driving the needle, and the solenoid. A control unit is provided, and the control unit energizes the solenoid to block the nozzle unit with the needle after a predetermined time has elapsed after the fuel pump stops driving when extinguishing the fire, and the temperature of the vaporization unit becomes equal to or lower than a predetermined temperature. At this time, the solenoid is stopped to energize and the needle is opened.

Further, a convection fan located on the back surface of the combustion section for circulating hot air and a control section for controlling the solenoid and the convection fan are provided, and the control section stops the driving of the fuel pump when the fire is extinguished. After a predetermined time from, energize the solenoid to close the nozzle portion with the needle,
When the temperature of the vaporization part becomes lower than a predetermined temperature, the solenoid and the convection fan are de-energized and the needle is opened.

Further, when the control unit extinguishes the fire, a predetermined time after the fuel pump is stopped, the solenoid is energized to close the nozzle unit with the needle, so that the temperature of the vaporizing unit becomes first.
Control to stop energization to the convection fan when the temperature falls below a predetermined temperature, and to stop the energization to the solenoid to open the needle when a temperature falls below a second predetermined temperature lower than the first predetermined temperature. It was configured to do.

[0008]

In this type of oil-fired heating system, in order to reduce the odor of fire extinguishing, first stop the fuel pump when extinguishing,
Then, the convection fan is stopped, the solenoid is operated to close the nozzle with the needle, and the convection fan is restarted after a predetermined time. A configuration is often used in which the convection fan is stopped and the needle is opened after a predetermined time has elapsed.
This is because a small amount of vaporized gas generated when the flame of combustion is extinguished by stopping the fuel pump, burning the vaporized gas remaining in the vaporized gas path of the combustion unit, and stopping the convection fan by the convection air. It prevents discharge to the outside and suppresses the generation of odors when extinguishing a fire. Furthermore, after closing the nozzle, the convection fan is restarted to promote cooling of the heating device and enhance safety. In this case, the odor emitted to the outside of the heating device immediately after extinguishing the fire is small, but if the vaporization part is not cooled sufficiently when the energization of the solenoid is stopped and the needle is opened after a predetermined time, the fuel remaining inside the vaporization part Will vaporize little by little, causing odor.

According to the present invention, according to the above-mentioned structure, when the fire is extinguished, the solenoid is once energized to close the nozzle portion with the needle, and when the vaporization part becomes below a predetermined temperature, the energization to the solenoid is stopped and the nozzle portion is opened. Therefore, by setting the predetermined temperature to be equal to or lower than the vaporization temperature of the fuel, it is possible to prevent generation of vaporized gas that causes odor even if the nozzle portion is opened. At this time, if a means for stopping energization of the solenoid is used after a fixed time has elapsed after stopping the fuel pump,
Since the temperature of the carburetor when the fuel pump is stopped depends on the amount of combustion at that time, it is necessary to energize the solenoid for the same amount of time as when the carburetor temperature is low and when the carburetor temperature is high, and the power consumption for holding the solenoid increases. .

According to the configuration of the present invention, since the energization of the solenoid is stopped depending on the temperature of the vaporization section, when the temperature of the carburetor when the fuel pump is stopped is low, the energization time of the solenoid is shortened and power consumption is reduced. Can be reduced.

Further, even when the convection fan is driven after the fuel pump is stopped to accelerate the cooling of the vaporization section, the power consumption can be reduced by stopping the driving of the convection fan depending on the temperature of the carburetor. .

Further, by stopping the convection fan when the temperature of the vaporization section is the first predetermined temperature, the generation of cold air by the convection fan is suppressed, and the solenoid is operated at the second predetermined temperature lower than the first predetermined temperature. It is possible to stop the energization and open the nozzle portion to suppress the generation of vaporized gas.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 are cross-sectional views of a main part and a device of the petroleum combustion heating device of the present application. In the figure, reference numeral 1 denotes a vaporization section, in which a vaporization chamber 2 is provided. Reference numeral 3 is a heater for heating the vaporization section 1, 4 is a nozzle section for ejecting vaporized gas vaporized in the vaporization chamber 2, 5 is a needle for opening and closing the ejection hole of the nozzle section 4, and a solenoid 6
Moves up and down by. Reference numeral 7 is a temperature detecting means for detecting the temperature of the vaporizing section 1, and 8 is a fuel pump for supplying fuel to the vaporizing section 1. Reference numeral 9 is a mixing tube for mixing the vaporized gas ejected from the nozzle portion 4 and the air sucked from the opening of the vaporizer 1,
Reference numeral 10 is a combustion section for burning the air-fuel mixture, 11 is a convection fan that supplies air that becomes warm air by mixing with combustion gas, 12 is a convection air intake port that takes in the convection air, and 13 is hot air blowout that discharges the warm air Ports and 14 are control units for controlling the heater 3, the solenoid 6, the fuel pump 8, the convection fan 11 and the like by a signal from the temperature detecting means 7 and the like.

In the above structure, the fuel pump 8 and the convection fan 11 are energized during normal combustion. Therefore, the needle 5 is located below, the nozzle portion 4 is opened, and the liquid fuel supplied from the fuel pump 8 is heated by the combustion heat in the heater 3 or the combustion portion 10 in the vaporization chamber 2 in the vaporization portion 1. It is heated inside and becomes vaporized gas, which is jetted from the nozzle portion 4 and mixed with air in the mixing pipe 9 and jetted from the combustion portion 10 to be burned. The burned exhaust gas is mixed with the air supplied from the convection fan 11 to become warm air, which is blown out from the air outlet 13. When the fire is extinguished, the fuel pump 8 stops and then the convection fan 1
1 stops. The vaporized gas remaining in the vaporization chamber 2 is temporarily ejected from the nozzle portion 4 to continue combustion. When the amount of vaporized gas jetted decreases, the solenoid 6 is energized and the connected needle 5 moves upward to close the nozzle portion 4 and stop combustion. When the solenoid 6 is energized and combustion is stopped, the convection fan 11 is energized again to drive the fan, thereby promoting cooling of the vaporization unit 1 and the entire apparatus. When the temperature detected by the temperature detecting means 7 provided in the vaporizer 1 reaches a predetermined temperature, the convection fan is stopped, the solenoid 6 is de-energized, the needle 5 is lowered, and the nozzle portion 4 is opened.

If the temperature of the vaporization section 1 is too high when the power supply to the final solenoid 6 is stopped, the fuel remaining in the vaporization chamber 2 is vaporized by the residual heat and discharged from the nozzle section, which causes odor. If the nozzle portion is opened after cooling the temperature of the vaporizing section 1 to an unnecessarily low temperature, the solenoid 6
This leads to a longer energization time, higher power consumption, and shorter life of the solenoid 6. Since the temperature of the carburetor 1 when the fuel pump 8 is stopped differs depending on the amount of combustion just before the stop, if the final stop of energization of the solenoid 6 is set by the time from the stop of the fuel pump 8, the final stop of energization of the solenoid 6 will occur. When the combustion amount is large, the temperature of the vaporizer 1 becomes high and may generate an odor. Further, when the combustion amount is small, it becomes lower than necessary, and the solenoid 6 consumes extra power.

According to the configuration of the present invention, since the final stoppage of energization of the solenoid 6 is controlled by the temperature of the vaporizing section 1 detected by the temperature detecting means 3, regardless of the amount of combustion when the fuel pump 8 is stopped. Energization of the solenoid 6 is stopped at a predetermined temperature, and the nozzle portion 4 is opened. Therefore, when the combustion amount is high, the nozzle portion 4 is opened after the temperature has dropped to the predetermined temperature, so that the generation of odor can be prevented. Further, when the combustion amount is small, the energization time to the solenoid 6 is shortened, so that the power consumption can be reduced. The temperature of the vaporization section 1 for stopping energization of the solenoid 6 varies depending on the boiling point of the fuel, but according to experiments, if kerosene is approximately 473 K or less, vaporization due to residual heat is scarce and practically no odor is generated.

Next, the vaporization section 1 for detecting the stop of energization of the convection fan 11 together with the final solenoid 6 by the temperature detecting means 3
By controlling according to the temperature of 1, the power consumption of the convection fan 11 as well as the power consumption of the solenoid 6 can be reduced.

Further, when the fuel pump 8 is stopped at the time of extinguishing the fire, the solenoid 6 is energized to close the nozzle portion 4 with the needle 5 and the temperature of the vaporizing portion 1 detected by the temperature detecting means 3 is the first. Convection fan 1 when a predetermined temperature is reached
1 is stopped, and when the second predetermined temperature lower than the first predetermined temperature is reached, the solenoid 6 is stopped from being supplied with the current, so that the convection fan 1 is operated at the first predetermined temperature.
It is possible to prevent the cold air from blowing out from the blowout port 13 due to the stop of No. 1 and the second temperature lower than the first predetermined temperature.
Since the nozzle portion 4 is opened at the predetermined temperature, it is possible to suppress the generation of vaporized gas due to the residual heat of the vaporization portion 1.

[0019]

As described in the above embodiments, the petroleum combustion heating device of the present invention has the following effects.

(1) When the fire is extinguished, the energization of the solenoid is stopped at the temperature of the vaporizing section and the nozzle is opened, so that the odor and the power consumption can be suppressed during the fire extinguishing.

(2) When the fire is extinguished, the energization of the solenoid and the convection fan is stopped at the temperature of the vaporizing section, so that the odor and the power consumption can be suppressed during the fire extinguishing.

(3) By stopping the energization of the convection fan at a temperature higher than the temperature of the vaporizing section for stopping the energization of the solenoid at the time of extinguishing the fire, the generation of cold air can be prevented and the odor can be reduced.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part of an oil-fired heating system according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the heating device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vaporization part 3 Heater 4 Nozzle part 5 Needle 6 Solenoid 7 Temperature detection means 8 Fuel pump 10 Combustion part 11 Convection fan 14 Control part

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location F24H 3/04 305 F24H 3/04 305A 305B

Claims (3)

[Claims] 1. A vaporization section for vaporizing fuel supplied by a fuel pump, a heater for heating the vaporization section, and a nozzle section for communicating with the vaporization section and ejecting vaporized fuel gas.
Temperature detecting means for detecting the temperature of the vaporization section, a combustion section for burning the fuel gas ejected from the nozzle section, a needle for opening and closing the nozzle section, a solenoid for opening and closing the needle, and a control for the solenoid. Of the vaporization unit for detecting the temperature by the temperature detection means, energizing the solenoid to energize the solenoid after a predetermined period of time after the fuel pump is stopped to extinguish the fire, and to close the nozzle unit with the needle. An oil-fired heating device configured to stop energization of the solenoid and open the needle when the temperature falls below a predetermined temperature. 2. A vaporization section for vaporizing the fuel supplied by a fuel pump, a heater for heating the vaporization section, and a nozzle section for communicating with the vaporization section and ejecting vaporized fuel gas.
Temperature detecting means for detecting the temperature of the vaporization section, a combustion section for burning the fuel gas ejected from the nozzle section, a needle for opening and closing the nozzle section, a solenoid for driving the needle to open and close, and the vaporization section A fuel pump that supplies fuel, a convection fan that is located on the back surface of the combustion unit and circulates warm air, and a control unit that controls the solenoid and the convection fan, and the control unit drives the fuel pump when extinguishing a fire. After a lapse of a predetermined time after the stop, the solenoid is energized to close the nozzle portion with the needle, and when the temperature of the vaporizing portion detected by the temperature detecting means becomes a predetermined temperature or less, the solenoid and the convection fan An oil-fired heating system configured to control energization to stop and open the needle. 3. A vaporization section for vaporizing the fuel supplied by a fuel pump, a heater for heating the vaporization section, and a nozzle section for communicating with the vaporization section and ejecting vaporized fuel gas.
Temperature detecting means for detecting the temperature of the vaporization section, a combustion section for burning the fuel gas ejected from the nozzle section, a needle for opening and closing the nozzle section, a solenoid for driving the needle to open and close, and the vaporization section A fuel pump that supplies fuel, a convection fan that is located on the back surface of the combustion unit and circulates warm air, and a control unit that controls the solenoid and the convection fan, and the control unit drives the fuel pump when extinguishing a fire. After a lapse of a predetermined time from the stop, the solenoid is energized to close the nozzle portion with the needle, and the convection fan is energized when the temperature of the vaporizing portion detected by the temperature detecting means is equal to or lower than a first predetermined temperature. Stop the first
Oil combustion heating apparatus configured to control so as to stop energizing the solenoid and open the needle when the temperature falls below a second predetermined temperature lower than the predetermined temperature.