JP2008241222A - Vaporizing combustion device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vaporizing combustion device shortening a waiting time until resuming combustion after feeding oil. <P>SOLUTION: The vaporizing combustion device comprises: a vaporizing part 9 having a heater 8 for vaporizing fuel oil; an intention detecting means 24 detecting an intention of refilling fuel oil after automatic fire extinction due to fuel oil shortage; and a control device 3 carrying a current to the heater 8 before combustion to preheat the vaporizing part 9. Since the control device 3 carries a current to the heater 8 for a predetermined time to preheat the vaporizing part 9 when the intention detecting means 24 detects the intention of refilling fuel oil, the intention of feeding oil is detected to preheat the vaporizing part during feeding oil, and combustion is immediately started by turning on an operating switch after refilling of fuel oil is completed. There is therefore no need to preheat after feeding oil and to wait for the start of combustion, which is extremely convenient, and usability is excellent particularly in the busy morning and immediately after coming home, because warmth can be obtained in an instant. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vaporization type combustion apparatus that vaporizes and burns fuel oil.

By the way, in this type of combustion device, when the amount of fuel oil falls below a predetermined amount, an alarm is issued and combustion in the combustion section is automatically stopped, so that the electromagnetic pump is blown or air flows into the fuel path. Was to prevent. (For example, see Patent Document 1)
Utility Model Registration No. 2588169

  However, with this conventional system, even if combustion is resumed after refueling, it will not be reignited immediately, and the vaporization section must wait until it is heated to a vaporizable temperature, which is particularly troublesome in busy mornings and immediately after returning home. Met.

  Therefore, in order to solve the above-described drawbacks, the present invention has a configuration, in particular, a vaporization unit equipped with a heater for vaporizing the fuel, intention detection means for detecting the intention of replenishing fuel after automatic extinguishing due to running out of fuel, Equipped with a control device that preheats the vaporization part by energizing the heater before combustion, and when the intention detection means detects the intention of refueling, the control device is energized for a predetermined time to vaporize The part is preheated.

  Further, the intention detection means detects extraction of the fuel tank after automatic fire extinguishing due to running out of fuel.

  The intention detecting means detects opening of the tank chamber lid after automatic fire extinguishing due to running out of fuel.

  The intention detecting means detects the removal of the fuel cap from the fixed tank after automatic fire extinguishing due to running out of fuel.

  As described above, according to the present invention, by detecting the intention of refueling and preheating the vaporizing section during refueling, fuel replenishment is completed and the operation switch is turned on, so that Combustion is started, and it is not necessary to preheat after refueling and wait for combustion to start.It is very convenient, especially in a busy morning or just after returning home, it gets warm immediately and is easy to use. is there.

  Furthermore, if the intention detection means detects the withdrawal of the fuel tank after automatic fire extinguishment due to running out of fuel, it can detect the intention of refueling more accurately, and it can be used immediately by preheating. Selfish.

  Furthermore, if the intention detection means detects the opening of the tank chamber lid after automatic fire extinguishing due to running out of fuel, it can be reliably determined that opening the tank chamber lid for refueling is regarded as the intention of refueling. It can be used with peace of mind without worrying about unnecessary preheating.

  Furthermore, if the intention detection means detects the removal of the fuel cap of the fixed tank after automatic fire extinguishing due to running out of fuel, it can also be used in a fixed tank type combustion device, and the range of use can be expanded. It is.

Next, an embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a fan heater main body constituting a vaporization combustion apparatus installed indoors. A control apparatus mainly composed of a vaporization burner 2 for combustion inside the main body 1 and a microcomputer for controlling the operation of the fan heater main body 1. 3, a convection blower 4 in the rear opening of the main body 1, a hot air outlet 5 on the front surface of the main body 1, and an operation unit 6 on the upper front side of the main body 1. Is blown into the room from the hot air outlet 5 by the convection fan 4 to perform heating.

  The vaporizing burner 2 includes a vaporizing section 9 having a heater 8 at the lower part of a burner head 7 having a plurality of flame holes. An oil receiving tray 10 is provided in the vaporizing section 9 heated by the heater 8. A liquid fuel is supplied through an oil feed nozzle 12 by driving a positive displacement electromagnetic pump 11, and a mixed gas of a vaporized gas obtained by vaporizing the liquid fuel and combustion air supplied from a combustion blower 13 through a blower passage 14 is used. Burning is performed in the flame holes of the burner head 7, and during the combustion, heat is recovered from the flame by an annular heat recovery ring 15 provided at the upper end of the vaporizing portion 9 so as to face the plurality of flame holes, and the heater 8 is energized. It is a reduction, and it performs quiet vaporization combustion with a wide turndown ratio.

  The operation unit 6 includes an operation switch 16 for instructing start / stop of operation, a room temperature setting unit 19 configured by a room temperature increase switch 17 and a room temperature decrease switch 18 to set a desired room temperature, a timer switch, Various operation switches such as an extension switch and a display unit 20 for displaying time and set room temperature are provided.

  Reference numeral 21 denotes a vaporization temperature sensor for detecting the temperature of the vaporization section 9 heated by the heater 8. The control device 3 turns off the heater 8 when the temperature detected by the vaporization temperature sensor 21 reaches a predetermined upper limit temperature. When the predetermined lower limit temperature is reached, the heater 8 is turned on to keep the temperature of the vaporizing section 9 within a temperature range in which the liquid fuel can be vaporized well.

  The control device 3 monitors the temperature detected by the vaporization temperature sensor 21 according to the operation command of the operation switch 16 and heats the vaporization unit 9 to a temperature at which the liquid fuel can be vaporized by the heater 8. Is increased to a temperature suitable for combustion, the electromagnetic pump 11 and the combustion blower 13 are started to drive, and the ignition device 22 ignites the mixed gas to start the combustion. The electromagnetic pump 11 and the combustion blower 13 are controlled to vary the combustion thermal power according to the deviation between the detected room temperature of the room temperature sensor 23 provided in the vicinity and the set room temperature set by the room temperature setting means 19 to vary the combustion thermal power. Control is performed so that the room temperature set by the room temperature setting means 19 is reached.

  Reference numeral 24 denotes intention detection means for detecting the intention of refueling after automatic fire extinguishing due to running out of fuel, and here, it is constituted by an open / close switch that is closed by contacting the bottom of the fuel tank 25 and opened by extracting the fuel tank 25. The float switch 26 detects that the fuel in the oil receiving tray 10 that temporarily stores the fuel from the fuel tank 25 has become a predetermined amount or less and automatically extinguishes the combustion. In order to replenish the fuel after the automatic fire extinguishing, the fuel tank 25 is removed from the main body 1 to confirm the intention of fuel supply, and the energization of the heater 8 is controlled through the control device 3 to preheat the vaporizer 9. Enter.

  27 starts counting at the same time as the above preheating starts. If combustion does not start within a predetermined time and within 30 minutes, a safety timer that stops preheating causes the intention detection means 24 to detect an erroneous intention. In addition, preheating is continued for a long time to prevent wasteful power consumption.

  Next, the operation of this embodiment will be described with reference to the flowchart shown in FIG. 5. The fuel tank 25 is empty during combustion by the vaporizing burner 2 and the amount of fuel in the oil pan 10 decreases with combustion. When the float switch 26 detects a predetermined amount or less (step 28), the routine proceeds to step 29, where the combustion of the vaporizing burner 2 is extinguished or the operation is stopped by the instruction of the operation switch 16 and YES. Then, the process proceeds to the next step 30, where the intention detecting means 24 detects that the fuel tank 25 has been extracted for fueling, and proceeds to step 31 with YES to start counting of the safety timer 27 and the heater 8 Is started to preheat the vaporizing section 9.

  Further, the routine proceeds to step 32, where it is determined whether or not the operation switch 16 is turned on. If YES, the routine proceeds to step 33, where the count of the safety timer 27 is first reset and stopped, and the normal combustion start control by the control device 3 is performed. Combustion is started, but the time until the start of combustion is shortened because preheating has already been started by the intention detection means 24, or if it takes time to refuel, combustion starts immediately without waiting. It is easy to use without wasted time.

  On the other hand, if NO in step 32, the process proceeds to step 34 to determine whether the safety timer 27 has finished counting for 30 minutes. YES, that is, the operation switch 16 is not turned ON even if 30 minutes have elapsed since the start of preheating. If combustion is not started, the routine proceeds to step 35, where the preheating of the vaporizing section 9 is terminated, thereby preventing unnecessary power consumption and improving safety.

  In addition, a switch that detects the opening of the tank chamber lid 36 that is opened to take out the fuel tank 25 may be used as the intention detection means 24. In the case of a fixed tank type, a switch that detects the removal of the fuel cap is intention detection. Means 24 may be used, and any of them can accurately detect the intention of refueling.

The perspective view which shows the vaporization type combustion apparatus which attached | subjected one Example of this invention. The principal part sectional drawing. The principal part block diagram. The block diagram of the control circuit. Same flowchart

Explanation of symbols

2 Vaporization burner 3 Control device 8 Heater 9 Vaporization part 24 Intention detection means

Claims (4)

  Equipped with a vaporizer equipped with a heater that vaporizes the fuel, intention detection means for detecting the intention of refueling after automatic fire extinguishing due to running out of fuel, and a controller for preheating the vaporizer by energizing the heater before combustion A vaporization type combustion apparatus characterized in that the intention detection means detects the intention of fuel replenishment to energize the controller for a predetermined time to preheat the vaporization section.   The vaporization type combustion apparatus according to claim 1, wherein the intention detection means detects extraction of a fuel tank after automatic fire extinguishing due to running out of fuel.   The vaporization type combustion apparatus according to claim 1, wherein the intention detection means detects opening of a tank chamber lid after automatic fire extinguishing due to running out of fuel.   The vaporization type combustion apparatus according to claim 1, wherein the intention detection means detects removal of a fuel cap from a fixed tank after automatic fire extinguishing due to running out of fuel.

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