Combustion machine

Abstract

To provide a burner which can use a power-accumulation type power supply device which is easy in portability.SOLUTION: An evaporation heater 8 is composed of a plurality of heaters 8a, 8b which are different from each other in capacities, and a control part 3 heats an evaporation part 9 by carrying electricity to the heater 8a which is large in the capacity when an input power supply is a commercial power supply, also heats the evaporation part 9 by carrying electricity to the heater 8b which is small in the capacity when the input power supply is other than the commercial power supply, and heats the evaporation part 9 by carrying electricity to the capacity-large heater 8a when the input power supply is the commercial power supply, thus shortening a time up to an ignition. When the input power supply is other than the commercial power supply, since the control part heats the evaporation part 9 by carrying electricity to the small-capacity heater 8b, even if a power-accumulation type power supply device which is small in output power is used, a current which is larger than a rated current does not flow to the power-accumulation type power supply device, and a burner can be operated without stopping an output of the power supply device.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a combustion device that burns fuel oil. [Background technology]

[0002] Conventionally, this type of device has been connected to a commercial power source indoors, and when an operation switch issues a start command, it monitors the temperature detected by a vaporization temperature sensor and heats the vaporizer by energizing the vaporization heater to a temperature at which the fuel can be vaporized. Once the vaporizer temperature has risen to a temperature suitable for combustion, it starts driving the electromagnetic pump and combustion fan, ignites the mixed gas with an ignition device to start combustion, detects the flame with a combustion sensor using a flame rod, stops energizing the vaporization heater, and controls the electromagnetic pump and combustion fan to vary the combustion power depending on the deviation between the room temperature detected by a room temperature sensor located near the convection fan on the back of the appliance body and the set room temperature set by the room temperature setting means, thereby controlling the room temperature to match the room temperature set by the room temperature setting means (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-46964 Summary of the Invention [Problem to be solved by the invention]

[0004] However, this conventional system was used for indoor heating and was mainly powered by a domestic commercial power source, so it could not be operated when there was a long power outage outdoors or due to a disaster, etc., because the commercial power source was unavailable.

[0005] Therefore, when attempting to use an easily portable storage-type power supply unit as a power source so that the unit can be operated outdoors or during long power outages, the heater capacity of the vaporizer in the combustion machine is, for example, 500W or 700W, while the portable storage-type power supply unit has a rated output power of, for example, 200W or 500W. When a storage-type power supply unit with a rated output power of 200W or 500W is used, a current greater than the rated current flows through the storage-type power supply unit, which activates the overcurrent protection circuit within the storage-type power supply unit and stops the output of the storage-type power supply unit, posing a problem in that the combustion machine cannot be operated. [Means for solving the problem]

[0006] In order to solve the above problems, claim 1 of the present invention provides a combustion machine comprising: a combustion unit having a vaporizing unit that vaporizes fuel oil; vaporizing unit heating means that heats the vaporizing unit; fuel oil supply means that supplies fuel oil to the vaporizing unit; a combustion blower that supplies combustion air; ignition means that ignites the fuel oil vaporized in the vaporizing unit; flame detection means that detects a flame in the combustion unit; vaporizing unit temperature detection means that detects the temperature of the vaporizing unit; and a control unit that controls combustion in the combustion unit, an input power source setting means for setting whether the input power source is a commercial power source by operation, and the control unit determines whether the input power source is a commercial power source or a non-commercial power source based on the setting of the input power source setting means; The vaporization section heating means consists of multiple heaters of different capacities, and the control section energizes the heater with a larger capacity to heat the vaporization section when the input power source is a commercial power source, and energizes the heater with a smaller capacity to heat the vaporization section when the input power source is other than a commercial power source.

[0007] Also, in claim 2, a combustion machine is provided with a combustion section having a vaporizing section that vaporizes fuel oil, vaporizing section heating means that heats the vaporizing section, fuel oil supply means that supplies fuel oil to the vaporizing section, a combustion blower that supplies combustion air, ignition means that ignites the fuel oil vaporized in the vaporizing section, flame detection means that detects a flame in the combustion section, vaporizing section temperature detection means that detects the temperature of the vaporizing section, and a control section that controls combustion in the combustion section, an input power source setting means for setting, by operation, whether the input power source is a commercial power source or a storage-type power source device having an output power smaller than that of the commercial power source, and the control unit determines whether the input power source is a commercial power source or the storage-type power source device based on the setting of the input power source setting means; The vaporizer heating means comprises a plurality of heaters, and the control unit energizes all of the heaters to heat the vaporizer when the input power is a commercial power supply, and Storage power supply unitAt this time, at least one of the heaters is not energized to heat the vaporizing section. Then, when the fuel oil in the vaporization section reaches a temperature at which it can be vaporized, combustion begins. . [Effects of the Invention]

[0009] According to claim 1 of this invention, the vaporization section heating means consists of a plurality of heaters of different capacities, and the control section energizes a heater with a larger capacity to heat the vaporization section when the input power source is a commercial power source, and energizes a heater with a smaller capacity to heat the vaporization section when the input power source is other than a commercial power source.Therefore, when the input power source is a commercial power source, energization is applied to a heater with a larger capacity to heat the vaporization section, thereby shortening the time until ignition, and when the input power source is other than a commercial power source, energization is applied to a heater with a smaller capacity to heat the vaporization section.Therefore, even if a storage-type power supply device with a small output power is used, a current greater than the rated current will not flow through the storage-type power supply device, and the combustion unit can operate without the output of the power supply device being stopped.

[0010] Furthermore, according to claim 2, the vaporization section heating means consists of a plurality of heaters, and the control section energizes all heaters to heat the vaporization section when the input power source is a commercial power source, and heats the vaporization section without energizing at least one heater when the input power source is other than a commercial power source. Therefore, when the input power source is a commercial power source, all heaters are energized to heat the vaporization section, thereby shortening the time until ignition, and when the input power source is other than a commercial power source, fewer heaters are energized to heat the vaporization section. Therefore, even when a storage type power supply device is used, the time until ignition can be shortened while preventing a current greater than the rated current from flowing through the storage type power supply device, and the combustion unit can be operated without stopping the output of the power supply device.

[0011] also , Misao The control unit determines whether the input power source is a commercial power source or not based on the setting of the input power source setting unit, so that a discrimination unit that discriminates whether the input power source is a commercial power source or not is not required, and it is possible to prevent the control unit from making an erroneous judgment. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a cross-sectional view of a combustion unit according to an embodiment of the present invention. [Figure 2] The same configuration diagram.

[0013] Next, an embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes the main body of the combustion unit, which is provided inside the main body 1 and is equipped with a burner 2 which is the combustion part that performs the combustion, a control unit 3 which is mainly composed of a microcomputer that controls the operation of this combustion unit, a convection fan 4 which is a blower that is provided at the opening on the back of the main body 1 and discharges the combustion gas from the burner 2 into the room, a hot air outlet 5 on the front of the main body 1, and an operation unit 6 on the upper front side of the main body 1, and heating is performed by blowing the combustion gas from the burner 2 into the room using the convection fan 4 from the hot air outlet 5.

[0014] The burner 2 is configured to include a vaporization section 9 having a vaporization heater 8, which is a vaporization section heating means, at the bottom of a burner head 7 having multiple flame holes, and the vaporization heater 8 consists of multiple vaporization heaters 8a and 8b. Liquid fuel is supplied from an oil tray 10 into the vaporization section 9 heated by the vaporization heater 8 through an oil supply nozzle 12 driven by a positive displacement electromagnetic pump 11, which is a fuel supply means, and the mixture of the vaporized gas from this liquid fuel and combustion air supplied through an air duct 14 from a combustion fan 13, which is a combustion blower, is burned in the flame holes of the burner head 7.During combustion, heat is recovered from the flame by an annular heat recovery ring 15 provided at the upper end of the vaporization section 9 so as to face the multiple flame holes, thereby reducing the current flow to the vaporization heater 8.

[0015] The operation unit 6 is provided with an operation switch 16 for issuing commands to start / stop operation, a room temperature setting means 19 consisting of a room temperature increase switch 17 and a room temperature decrease switch 18 for setting the desired room temperature, various operation switches such as a timer switch and a preheat standby switch, a display unit 20 that displays the time, the set room temperature, and operation guides, and an input power setting means 21 consisting of multiple input power setting buttons 21a and 21b.

[0016] Reference numeral 22 is a vaporization temperature sensor consisting of a temperature thermistor, which is a vaporization section temperature detection means for detecting the temperature of the vaporization section 9 heated by the vaporization heater 8. When the temperature detected by this vaporization temperature sensor 22 reaches a predetermined upper limit temperature, the control section 3 turns off the vaporization heater 8, and when the temperature reaches a predetermined lower limit temperature, it turns on the vaporization heater 8 to maintain the temperature of the vaporization section 9 within a temperature range in which the liquid fuel can be vaporized well.

[0017] In addition, in response to an operation start command from the operation switch 16, the control unit 3 monitors the detected temperature of the vaporization temperature sensor 22 and heats the vaporization unit 9 using the vaporization heater 8 to a temperature at which the liquid fuel can be vaporized.When the temperature of the vaporization unit 9 has risen to a temperature suitable for combustion, it starts driving the electromagnetic pump 11 and combustion fan 13, ignites the mixed gas using the discharge electrode 23, which is an ignition means, to start combustion, detects the flame using the combustion sensor 24, which consists of a flame rod, which is a flame detection means, and controls the electromagnetic pump 11 and combustion fan 13 to vary the combustion power depending on the deviation between the room temperature detected by the room temperature sensor 25, which is located near the convection fan 4 on the back of the device main body 1, and the set room temperature set by the room temperature setting means 19, thereby controlling the room temperature to become the room temperature set by the room temperature setting means 19.

[0018] The control unit 3 also has a timer means 26 which is a timing means, and when the timer means 26 receives a timing start signal from the control unit 3, it starts timing and outputs the time being counted to the control unit 3, and when it receives a timing stop signal from the control unit 3, it stops timing and resets.

[0019] Furthermore, when the control unit 3 receives an operation stop command from the operation switch 16, it appropriately controls the convection fan 4, evaporation heater 8, electromagnetic pump 11, and combustion fan 13 to extinguish fire in accordance with the count of the timer means 26, thereby realizing comfortable fire extinguishing without odor or smoke, and also stops operation when the combustion sensor 24 detects incomplete combustion.

[0020] Numeral 27 denotes a hollow cylindrical metal flame tube, which is installed to enclose the upper part of burner 2 and stabilizes combustion by preventing the air from convection fan 4 from directly hitting the flame-forming part at the top of burner 2, and also prevents the flame from being fanned by the air from convection fan 4 and blowing out from hot air outlet 5.

[0021] Reference numeral 28 denotes an AC input power supply unit, which is connected to a domestic commercial AC 100V power supply or the output power of an easily portable storage-type power supply device.

[0022] Next, the operation of this embodiment will be described as a first embodiment with reference to FIGS. In this embodiment, vaporization heater 8a is configured as a vaporization heater with a large capacity, and vaporization heater 8b is configured as a vaporization heater with a small capacity. First, the user connects a domestic commercial power source to the input power source section 28, and then presses the operation switch 16, and the display section 20 displays a message indicating that the input power source has been selected.

[0023] Therefore, since the user has connected domestic commercial power to the input power supply unit 28, he presses the input power supply setting button 21a labeled "domestic commercial power supply" from among the multiple input power supply setting buttons of the input power supply setting means 21 of the operation unit 6.

[0024] As a result, control unit 3 determines that the input power source is a commercial power source, and starts heating vaporizer unit 9 by energizing vaporizer heater 8a, which has a larger capacity than the plurality of vaporizer heaters 8a, 8b, which are vaporizer heating means.

[0025] Here, in a conventional combustion machine used in a room where the input power source is only commercial power, for example, the capacity of the evaporative heater is 650W, whereas in this embodiment, evaporative heater 8a is 650W and evaporative heater 8b is 150W, which has a smaller capacity than evaporative heater 8a.In this embodiment, when control unit 3 determines that the input power source is commercial power, it passes electricity through evaporative heater 8a, which has a larger capacity, to heat evaporative unit 9.Therefore, compared to a combustion machine used in a room where the input power source is only commercial power and there is only one evaporative heater with a capacity of 650W, the time from pressing operation switch 16 to starting ignition operation is the same, and it can be used without any discomfort.

[0026] Next, a case where an easily portable storage-type power supply device is connected will be described. First, the user connects an easily portable storage-type power supply device to the input power supply unit 28, and then presses the operation switch 16, and the display unit 20 displays a message indicating that the input power supply has been selected.

[0027] Therefore, the user connects an easily portable rechargeable power supply device to the input power supply unit 28, and presses the input power supply setting button 21b labeled "rechargeable power supply device" from among the multiple input power supply setting buttons of the input power supply setting means 21 of the operation unit 6.

[0028] As a result, the control unit 3 determines that the input power source is a portable storage type power supply device, and begins heating the vaporization unit 9 by passing electricity through the vaporization heater 8b with the smaller capacity among the multiple vaporization heaters 8a, 8b, which are the vaporization unit heating means.

[0029] Here, in conventional combustion machines used indoors where the only input power source is commercial power, the capacity of the evaporative heater is, for example, 650 W, whereas in this embodiment, evaporative heater 8a is 650 W and evaporative heater 8b is 150 W, which has a smaller capacity than evaporative heater 8a.In this embodiment, if control unit 3 determines that the input power source is an easily portable storage type power supply, it will pass electricity through the smaller capacity evaporative heater 8b to heat evaporative unit 9.Therefore, even if the rated output power of the storage type power supply is a small capacity such as 200 W or 500 W, a current below the rated current will flow through the storage type power supply, and the combustion machine can be operated without activating the overcurrent protection circuit in the storage type power supply.

[0030] Next, the operation of this embodiment will be described as a second embodiment. In this embodiment, vaporization heater 8a is configured as a vaporization heater with a large capacity, and vaporization heater 8b is configured as a vaporization heater with a small capacity. First, the user connects a domestic commercial power source to the input power source section 28, and then presses the operation switch 16, and the display section 20 displays a message indicating that the input power source has been selected.

[0031] Therefore, since the user has connected domestic commercial power to the input power supply unit 28, he presses the input power supply setting button 21a labeled "domestic commercial power supply" from among the multiple input power supply setting buttons of the input power supply setting means 21 of the operation unit 6.

[0032] As a result, the control unit 3 determines that the input power source is a commercial power source, and starts heating the vaporization unit 9 by passing electricity through both the large-capacity vaporization heater 8a and the small-capacity vaporization heater 8b of the multiple vaporization heaters 8a, 8b, which are vaporization unit heating means.

[0033] Here, in a conventional combustion machine used in a room where the input power source is only commercial power, the capacity of the evaporative heater is, for example, 650 W, whereas in this embodiment, evaporative heater 8a is 500 W and evaporative heater 8b is 150 W, which has a smaller capacity than evaporative heater 8a.In this embodiment, when control unit 3 determines that the input power source is commercial power, it passes electricity through evaporative heater 8a with a larger capacity and evaporative heater 8b with a smaller capacity to heat evaporative unit 9.Therefore, the capacity of the evaporative heater is the same as that of a conventional combustion machine used in a room where the input power source is only commercial power, and the time from pressing operation switch 16 to starting the ignition operation is the same, so it can be used without any discomfort.

[0034] Next, a case where an easily portable storage-type power supply device is connected will be described. First, the user connects an easily portable storage-type power supply device to the input power supply unit 28, and then presses the operation switch 16, and the display unit 20 displays a message indicating that the input power supply has been selected.

[0035] Therefore, the user connects an easily portable rechargeable power supply device to the input power supply unit 28, and presses the input power supply setting button 21b labeled "rechargeable power supply device" from among the multiple input power supply setting buttons of the input power supply setting means 21 of the operation unit 6.

[0036] As a result, the control unit 3 determines that the input power source is a portable storage type power supply device, and begins heating the vaporization unit 9 by passing electricity only to the vaporization heater 8b with the smallest capacity among the multiple vaporization heaters 8a, 8, which are the vaporization unit heating means.

[0037] Here, in a conventional combustion machine used indoors where the only input power source is commercial power, for example, the capacity of the evaporative heater is 650W, whereas in this embodiment, evaporative heater 8a is 500W and evaporative heater 8b is 150W, which has a smaller capacity than evaporative heater 8a.In this embodiment, when control unit 3 determines that the input power source is an easily portable storage type power supply, it passes electricity only to the smaller capacity evaporative heater 8b to heat evaporative unit 9.Therefore, even if the rated output power of the storage type power supply is a small capacity such as 200W or 500W, a current below the rated current flows through the storage type power supply, and the combustion machine can be operated without activating the overcurrent protection circuit in the storage type power supply.

[0038] In this embodiment, the plurality of vaporization heaters are two vaporization heaters 8a and 8b, but more than two vaporization heaters may be provided. Alternatively, all the vaporization heaters may have the same capacity. For example, if three evaporative heaters are provided, the capacity of all evaporative heaters is set to 200W, and if the input power source is a commercial power source, power is applied to all three evaporative heaters. If the input power source unit 28 is a portable storage-type power supply device, the number of input power setting buttons on the input power setting means 21 is also increased, and the input power setting button labeled as a storage-type power supply device is provided with three input power setting buttons for rated output powers of less than 500W, 500W to less than 1500W, and 1500W or more.

[0039] When the input power setting button with a rated output power of less than 500W is pressed, the control unit 3 determines that the input power source is a portable, rechargeable power supply device with a rated output power of less than 500W and energizes one evaporative heater; when the input power setting button with a rated output power of 500W to less than 1500W is pressed, the control unit 3 determines that the input power source is a portable, rechargeable power supply device with a rated output power of 500W to less than 1500W and energizes two evaporative heaters; and when the input power setting button with a rated output power of 1500W or more is pressed, the control unit 3 determines that the input power source is a portable, rechargeable power supply device with a rated output power of 1500W or more and energizes all three evaporative heaters.

[0040] This allows current to flow within a range that does not exceed the rated current, in accordance with the capacity of the storage type power supply device, and the overcurrent protection circuit within the storage type power supply device does not activate, allowing the vaporization section 9 to heat up as quickly as possible, making it easier to use when using an easily portable storage type power supply device.

[0041] In this embodiment, a pump spray type burner has been described, but the present invention is not limited to this, and may be a vaporizing Bunsen type burner with a vaporizing heater or a natural evaporation pot type burner with a vaporizing heater. [Explanation of symbols]

[0042] 2 Burner (combustion part) 3. Control Unit 8. Vaporization heater (evaporation unit heating means) 9 Vaporization section 11 Electromagnetic pump (fuel supply means) 13 Combustion fan (combustion blower) 16 Operation switch 21 Input power setting means 22 Vaporization temperature sensor (evaporation unit temperature detection means) 23 Discharge electrode (ignition means) 24 Combustion sensor (flame detection means) 25 Timer means (timekeeping means) 28 Input power supply section

Claims

1. a combustion unit having a combustion section with a vaporizer that vaporizes fuel oil, a vaporizer heating means that heats the vaporizer, a fuel oil supply means that supplies fuel oil to the vaporizer, a combustion blower that supplies combustion air, an ignition means that ignites the fuel oil vaporized in the vaporizer, a flame detection means that detects a flame in the combustion section, a vaporizer temperature detection means that detects the temperature of the vaporizer, and a control unit that controls combustion in the combustion unit, the combustion unit further comprising an input power setting means that is operated to set whether the input power source is a commercial power source, the control unit determines whether the input power source is a commercial power source or not based on the setting of the input power setting means, the vaporizer heating means comprises a plurality of heaters of different capacities, and the control unit energizes the heater with a larger capacity to heat the vaporizer when the input power source is a commercial power source, and energizes the heater with a smaller capacity to heat the vaporizer when the input power source is not a commercial power source.

2. In a combustion machine comprising a combustion section having a vaporizing section for vaporizing fuel oil, vaporizing section heating means for heating the vaporizing section, fuel oil supply means for supplying fuel oil to the vaporizing section, a combustion blower for supplying combustion air, ignition means for igniting the fuel oil vaporized in the vaporizing section, flame detection means for detecting a flame in the combustion section, vaporizing section temperature detection means for detecting the temperature of the vaporizing section, and a control section for controlling combustion in the combustion section, a device for determining whether an input power source is a commercial power source or a storage type power supply device having an output power smaller than that of the commercial power source by operation a control unit that determines whether the input power source is a commercial power source or a storage-type power supply device based on the setting of the input power source setting unit; the vaporization unit heating unit comprises a plurality of heaters; when the input power source is a commercial power source, the control unit energizes all of the heaters to heat the vaporization unit, and when the input power source is a storage-type power supply device, the control unit heats the vaporization unit without energizing at least one of the heaters, and starts combustion when the fuel oil in the vaporization unit reaches a temperature at which it can be vaporized.

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