JPH11132449A - Catalytic combustion equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To freely set a temperature of a combustion unit in portable catalytic combustion equipment where a liquefied fuel gas is caused to burn by a catalyst so as to use the heat thereof, control the temperature to a high accuracy with a simple construction, and ensure a positive igniting operation in case of an ignition miss by controlling an ignition unit so as to cause the ignition unit to actuate again. SOLUTION: Supply of a fuel gas to a combustion unit 3, wherein the fuel gas and air are caused to react by oxidation to generate heat, is controlled by a fuel controlling unit 7, an output fuel gas from the fuel controlling unit 7 is ignited by an ignition unit 5, and an output signal of a temperature detection unit 4 for detecting a temperature of the combustion unit 3 is inputted into a controlling unit 11 thereby to control the fuel controlling unit 7 and the ignition unit 5. A power source unit 12 is arranged to have a plurality of voltage outputs for actuating the fuel controlling unit 7, ignition unit 5, and controlling unit 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable and convenient catalytic combustion apparatus utilizing catalytic heat of liquefied fuel gas.

[0002]

2. Description of the Related Art Conventionally, this type of catalytic combustion apparatus has been configured as shown in FIG. Hereinafter, the configuration will be described.

As shown in FIG. 6, a catalyst 29 is fixed to an inner surface of a case 30 made of a material having good thermal conductivity. An electric insulator 32 such as ceramic is provided on the inner surface of the case 30 between the exhaust hole 31 provided in the case 30 and the catalyst 29, and the electric insulator 32 discharges a spark at the time of ignition to ignite the catalyst 29. 33 and the catalytic combustion unit 3
4.

[0004] The temperature-sensitive ferrite 35 has a Curie point at which the magnetic characteristics change rapidly, is formed in a ring shape, and is fixed to the outer shell 36. The magnet 37 is provided on the inner surface of the outer shell 36 so as to face the temperature-sensitive ferrite 35 with a predetermined gap 38 interposed therebetween, and attracts the temperature-sensitive ferrite 35. A valve member 39 is provided on the surface opposite to the temperature-sensitive ferrite 35. Is fixed. The spring 40 urges the magnet 37 in a direction away from the temperature-sensitive ferrite 35.

[0005] The valve element 41 is provided with a valve port 42 facing the valve member 39 to form a valve 43, and a valve port 4
A nozzle 44 for ejecting the vaporized fuel gas toward the catalyst 29 is provided at a position opposite to the position 2.

Temperature-sensitive ferrite 35, outer shell 36, magnet 3
7. A temperature control section 45 for controlling the combustion temperature of the combustion section 34 is constituted by the valve member 39, the spring 40, the valve element 41 and the like.
Is press-fitted and fixed to the inner surface of one end of the case 30. 46 is a fuel gas supply port. A hole 47 for taking in air is provided between the catalyst 29 and the nozzle 44.

When the fuel gas is supplied from the fuel gas supply port 46, the fuel gas passes through the center of the temperature-sensitive ferrite 35 and passes through the temperature-sensitive ferrite 3.
From the gap between the magnet 5 and the magnet 37, it passes through the gap 38 between the magnet 37 and the outer shell 36, reaches the valve port 42, and blows out from the nozzle 44. At this time, air is drawn from the holes 47 by the flow rate of the fuel gas, and becomes a mixture of the fuel gas and the air.
Supplied to

Then, a spark is blown from the discharge electrode 33 by giving an impact to the piezoelectric ceramic element or the like, so that a flame is generated on the discharge electrode 33 side of the catalyst 29. The generated flame heats the catalyst 29 and starts a catalytic reaction.
When the catalyst 29 starts the catalytic reaction, only the exhaust gas comes to the flame and disappears naturally. The case 30 is heated by the catalytic reaction, and the heat also heats the outer shell 36.

When the outer shell 36 is heated, the temperature-sensitive ferrite 35 fixed to the outer shell 36 is heated. When the temperature of the temperature-sensitive ferrite 35 reaches a Curie point determined by the composition, the magnet 37 is turned on. As a result, the valve member 39 is moved from the temperature-sensitive ferrite 35 by the spring 40 to the valve body 41 and closes the valve port 42.

As a result, the fuel gas is not supplied to the catalyst 29, and the temperature drops. When the temperature of the temperature-sensitive ferrite 35 decreases, the magnet 37 attracts the temperature-sensitive ferrite 35 again, opens the valve port 42, and supplies the fuel gas. When the fuel gas is supplied, the catalytic reaction starts again. By repeating this operation, the temperature of case 30 can be kept constant.

The igniter generates a high voltage by, for example, applying a mechanical impact to the piezoelectric ceramic element to generate a spark at the discharge electrode 33 and ignite the fuel gas. In the method of igniting by applying an impact to the piezoelectric element, a spark is generated only when the impact is applied. If ignition is not performed at this time, ignition failure occurs and the catalytic combustion device does not operate. Therefore, by using the ignition device shown in FIG. 7, it is possible to reliably ignite. Hereinafter, the configuration will be described.

As shown in FIG. 7, a transformer T1, a transistor Q1, a resistor R1, and a diode D1 constitute an oscillation circuit, and the DC voltage E1 is applied to the secondary side of the transformer T1 by a high frequency and a high frequency. Converted to voltage. This high frequency and high voltage are rectified by the diode D2 and charged in the capacitor C1. When the terminal voltage of the capacitor C1 becomes equal to or higher than the trigger voltage VON of the trigger element Q2, the trigger element Q2 is turned on, and the charge of the capacitor C1 is discharged via the trigger element Q2 and the primary winding of the step-up transformer T2.

Assuming that the terminal voltage of the capacitor C1 is V1, the voltage waveform of V1 is shown in FIG. When the voltage V1 reaches the voltage VON at which the trigger element Q2 triggers on while the time t1 is charging the capacitor C1, the capacitor C1 is rapidly discharged, and the voltage V1 becomes zero.
The discharge current of the capacitor C1 is defined as i1, and the current i
1 is shown in FIG. This discharge current is a large value, and the peak value is about 40 to 50A.

The number of turns on the primary side of the step-up transformer T2 is 20
The number of turns on the secondary side is 2000 to 3000
As described above, a large current flows through the primary side as described above, and a high voltage as shown in FIG. 8C is obtained on the secondary side. The voltage V2 obtained on the secondary side is several tens of kV, and this voltage is applied to the discharge electrodes P1, P2 at predetermined intervals.
In addition, a discharge is caused between the discharge electrodes P1 and P2. Therefore, the voltage V2 is determined by the interval between the discharge electrodes P1 and P2, and is higher when the interval between the discharge electrodes P1 and P2 is wider.
It becomes low when it is narrow.

The resistor R2 is for discharging the charge remaining in the capacitor C1 when the operation is stopped by turning off the DC voltage E1 applied to the oscillation circuit. As described above, ferrite is used as a core in the step-up transformer T2 in order to apply a large current pulse to the primary side and efficiently obtain a high voltage on the secondary side. Further, a polyester film has been used as a dielectric of the capacitor C1 through which a large current pulse flows.

[0016]

However, in such a conventional configuration, the temperature control level is only one point determined by the material of the temperature-sensitive ferrite 35. If the temperature is too high during use, or If the temperature is too low, the temperature cannot be lowered or set to a high temperature.

The igniter obtains a high voltage by applying a mechanical shock to the piezoelectric ceramic element and the like, and discharges the discharge electrode 33.
In the event of poor ignition, the user recognizes the poor ignition,
It is necessary to perform the ignition operation again, and unless the ignition failure is noticed, the normal operation cannot be performed, which is inconvenient.

Therefore, the transformer T1, the transistor Q
1. When the ignition part that constitutes the oscillation circuit is used for the resistor R1 and the diode D1, if ferrite is used for the core of the step-up transformer T2, the size of the step-up transformer T2 becomes large because the ferrite has a small saturation magnetic flux density. And it became heavy. Furthermore, since ferrite is a baked product, there is a problem that the size and shape are limited and the ferrite is broken by an impact such as dropping.

If a polyester film capacitor is used as the capacitor C1 through which the pulse current flows, the polyester film has a large dielectric loss tangent, so that the pulse current is attenuated by the capacitor C1 and is sufficiently large on the primary side of the step-up transformer T2. Therefore, there is a problem that a sufficient current cannot be obtained and a sufficiently high voltage cannot be obtained in the secondary coil. Further, there is a problem that the capacitor C1 is damaged due to a loss due to a large dielectric loss tangent.

The present invention solves the above-mentioned conventional problems. In addition to enabling the temperature of the combustion section to be freely set, the temperature can be controlled accurately with a simple configuration. It is a first object of the present invention to control the ignition unit to operate the unit so that the ignition operation can be performed reliably.

It is a second object of the present invention to obtain a catalytic combustion device which is portable and convenient by forming the boosting transformer of the ignition section thin and small and light, and configuring the ignition section small and lightweight.

It is a third object of the present invention to reduce the loss in the capacitor of the ignition portion and to obtain a high voltage and high energy spark at the electrode portion.

[0023]

SUMMARY OF THE INVENTION In order to achieve the first object, the present invention controls the supply of fuel gas to a combustion unit that generates heat by oxidizing a fuel gas and air by a fuel adjustment unit. The fuel gas output from the fuel control unit is ignited by an ignition unit, and an output signal of a temperature detection unit for detecting the temperature of the combustion unit is input to the control unit to control the fuel control unit and the ignition unit. The power supply unit for operating the fuel control unit, the ignition unit, and the control unit is configured to have a plurality of voltage outputs.

Thus, the optimum power supply voltage can be applied to each of the fuel control section, the ignition section, and the control section. Therefore, the fuel control section, the ignition section, and the control section can be constituted by independent units, and the combustion can be performed. In addition to being able to set the temperature of the part freely, it is possible to accurately control the temperature with a simple configuration, and to control the ignition part to operate the ignition part again in the case of ignition failure, to ensure An ignition operation can be performed.

Further, in order to achieve the second object, the supply of fuel gas to the combustion section, which generates heat by oxidizing the fuel gas and air, is controlled by the fuel control section. The output fuel gas is ignited by an ignition section. The ignition part is configured to supply a pulse current to the primary side of the step-up transformer and obtain a high voltage on the secondary side to generate a spark, and the core of the step-up transformer of the ignition part is formed by laminating thin sheets of amorphous metal. Things.

Thus, since the amorphous metal has a higher saturation magnetic flux density and magnetic permeability than ferrite, the core of the step-up transformer can be made smaller, the step-up transformer can be formed thin and small, and the ignition portion can be made small and lightweight. Can,
A portable catalytic combustion device can be obtained.

In order to achieve the third object, the supply of the fuel gas to the combustion section, which generates heat by oxidizing the fuel gas and air, is controlled by the fuel control section, and the fuel control section controls the supply of the fuel gas from the fuel control section. The output fuel gas is ignited by an ignition section. The ignition section is configured to cause a discharge current of the electric charge charged in the capacitor to flow to the primary side of the step-up transformer, to obtain a high voltage to the secondary side to generate sparks, and to configure the dielectric of the capacitor of the ignition section to be polypropylene. Things.

By forming the dielectric of the capacitor from polypropylene, the loss in the capacitor is small and a large current can flow to the primary side of the step-up transformer.
High voltage and high energy spark can be obtained in the electrode section. In addition, since the power consumption of the capacitor is small, a highly reliable ignition portion that can be used without any problem for a long time without damaging the capacitor can be configured.

[0029]

DETAILED DESCRIPTION OF THE INVENTION The invention according to claim 1 of the present invention is directed to a combustion section for generating heat by oxidizing a fuel gas and air, a temperature detection section for detecting the temperature of the combustion section, A fuel adjustment unit that controls supply of fuel gas to the combustion unit;
An ignition unit that ignites the output fuel gas from the fuel adjustment unit, a control unit that receives an output signal of the temperature detection unit and controls the fuel adjustment unit and the ignition unit, and the fuel adjustment unit, the ignition unit, and a control unit. A power supply unit for operating the unit, the power supply unit is configured to have a plurality of voltage outputs, the fuel adjustment unit, the ignition unit, it is possible to apply an optimal power supply voltage to each of the control unit, therefore , The fuel control unit, the ignition unit, and the control unit can be configured as independent units,
The temperature of the combustion section can be set freely,
The temperature can be controlled accurately with a simple configuration.
In the case of poor ignition, the ignition operation can be reliably performed by controlling the ignition unit to operate the ignition unit again.

According to a second aspect of the present invention, in the first aspect of the present invention, the power supply unit includes a battery unit and a booster that boosts an output voltage of the battery unit. Alternatively, the ignition unit, the fuel adjustment unit, or the control unit is configured to be operated by the output of the booster unit. The ignition unit or the fuel adjustment unit that consumes a large amount of current is operated directly by the output of the battery unit. By increasing the output voltage of the battery unit and applying it to the control unit by increasing the output voltage of the battery unit, the control unit can control the fuel adjustment unit with the output of the control unit. An easy-to-use device that can change the temperature can be configured, and the driving of the ignition unit can be controlled by the control unit, so that there is no ignition failure and a reliable ignition operation can be performed. Equipment It can be formed.

According to a third aspect of the present invention, there is provided a combustion section for generating heat by oxidizing a fuel gas and air, a fuel adjustment section for controlling the supply of the fuel gas to the combustion section, and a fuel adjustment section. An ignition section for igniting the output fuel gas from
The ignition unit is configured to apply a pulse current to a primary side of a step-up transformer and obtain a high voltage on a secondary side to generate a spark, and the core of the step-up transformer is configured by laminating thin sheets of amorphous metal. Since amorphous metal has higher saturation magnetic flux density and magnetic permeability than ferrite, the core of the step-up transformer can be made smaller, the step-up transformer can be formed thin and small and light, and the ignition section can be made small and lightweight, A convenient catalytic combustion device can be obtained.

According to a fourth aspect of the present invention, there is provided a combustion section for generating heat by oxidizing a fuel gas and air, a fuel adjusting section for controlling the supply of the fuel gas to the combustion section, and a fuel adjusting section. An ignition section for igniting the output fuel gas from
The igniter is configured so that a discharge current of the electric charge charged in the capacitor flows through the primary side of the step-up transformer and a high voltage is generated on the secondary side to generate a spark, and the dielectric of the capacitor is formed of polypropylene. Since the capacitor dielectric is made of polypropylene, the loss in the capacitor is small, a large current can flow to the primary side of the step-up transformer, and a high voltage and high energy spark can be obtained at the discharge electrode. Can be. Also, because the power consumption of the capacitor is small, it does not damage the capacitor,
A highly reliable ignition portion that can be used for a long time without any problem can be configured.

[0033]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) As shown in FIG. 1 and FIG. 2, a heating unit 1 is provided with a combustion unit 3 for generating a heat by oxidizing a mixed gas of fuel gas and air sent from a fuel unit 2 to generate heat. And a temperature detection unit 4 for detecting the temperature of the combustion unit 3 and an ignition unit 5 for igniting the fuel gas from the fuel unit 2. The fuel unit 2 includes a fuel tank 6 for storing fuel gas, a fuel adjusting unit 7 for controlling the supply of fuel gas to the combustion unit 3, and a power switch 8.

The combustion section 3 generates heat by oxidizing a mixed gas of fuel gas and air sent from the fuel unit 2. The ignition unit 5 is configured using a high voltage discharge or a heater or the like, and ignites the fuel gas from the fuel adjustment unit 7.
The fuel adjusting section 7 is constituted by an electromagnetic valve or the like, and supplies or shuts off the fuel gas from the fuel tank 6 to the combustion section 3.

The power supply unit 9 is constituted by a control unit 11 which receives an output signal of the temperature detection unit 4 and an output signal of the setting unit 10 and controls the fuel adjustment unit 7 and the ignition unit 5, and a power supply unit 12. I have. The control unit 11 has a plurality of temperature control levels,
Of the plurality of temperature control levels in the output signal of the setting unit 10,
It is configured to select one of the temperature control levels.

The power supply section 12 obtains a plurality of voltages by using a plurality of batteries 13 or boosts the output of the battery 13
And a plurality of voltages are obtained by obtaining a high voltage or the like, and the control unit 11, the ignition unit 5, the fuel adjustment unit 7 and the like are operated at the optimum voltage.

The setting unit 10 is connected to the control unit 11 by a cable 15.
The control unit 11 inputs the output of the setting switch 16 to the control unit 11, and sets a desired temperature control level among a plurality of temperature control levels previously provided to the control unit 11. Display 17
Is composed of a display element such as a light emitting diode, and displays the temperature control level set by the setting switch 16.

The display unit 17 turns on a display element corresponding to the set temperature control level, and indicates which temperature control level is set. The preset temperature control level of the control unit 11 is set to a “high” temperature setting, a medium “medium” temperature setting, a low temperature “low” temperature setting, and a “off” for stopping the operation of the device, in which the temperature of the combustion unit 3 is high The setting is switched by the setting switch 16.

The heating sheet 18 is attached to the heating unit 1 and is heated by the heating unit 1 to heat an object to be heated.
It is made of a heat conductive material such as a heat conductive fiber. The heating unit 1 is connected to an intake pipe 19 that takes in air and an exhaust pipe 20 that emits exhaust gas, and is configured to suck and exhaust through an intake and exhaust unit 21.

When the power switch 8 is turned on, the power supply voltage is supplied to the solenoid valve constituting the fuel adjusting section 7, the solenoid valve is opened, and the fuel gas from the fuel tank 6 is discharged by the combustion section. Supply to 3. At the same time, the control unit 11 controls the ignition unit 5 to operate for a predetermined time, and the high voltage generated by the ignition unit 5 causes arc discharge at the discharge electrode 22 to ignite the fuel gas.

When the ignition section 5 ignites the fuel gas to generate a flame, the operation becomes unnecessary. The generated flame is the catalyst part 2.
3 is heated and it shifts to catalytic combustion. Upon transition to catalytic combustion, the gas flowing into the ignition section 5 becomes exhaust gas, and the flame goes out.

The temperature of the combustion section 3 is detected by the temperature detection section 4,
The detection output is input to the control unit 11. The control unit 11 compares the output of the temperature detection unit 4 with the temperature detection level set by the setting unit 10, outputs the comparison output to the fuel control unit 7, and controls the combustion unit 3 at a desired temperature. Then, the object to be heated is heated via the heating sheet 18.

Further, the control unit 11 sets the ignition unit 5 at the start of the operation.
Is operated for a predetermined time, and when a predetermined temperature rise is not obtained from the output of the temperature detection unit 4 even though the ignition unit 5 is operating, it is determined that an ignition failure has occurred, and the ignition unit 5 is restarted. Make it work.

As described above, according to the present embodiment, the power supply unit 12
Is composed of a battery unit 13 and a boosting unit 14 for boosting its output voltage, so that the fuel adjusting unit 7 is configured by an electromagnetic valve or the like that operates at a low power supply voltage but consumes a large amount of current, The output voltage of the battery unit 13 is directly applied to the ignition unit 5 that ignites at a high power supply voltage, and the output voltage of the boosting unit 14 is applied to the control unit 11 that consumes less current. And the power supply unit 12 can be made small and lightweight.

(Embodiment 2) The ignition section 5 is configured as shown in FIG. 3, and an oscillating circuit including a transformer T1, a transistor Q1, a resistor R1, and a diode D1 causes a DC voltage E1 to be equal to that of the transformer T1. High frequency on the secondary side,
Converted to high voltage. This high frequency and high voltage are rectified by the diode D2 and charged in the capacitor C0. When the terminal voltage of the capacitor C0 becomes equal to or higher than the trigger voltage VON of the trigger element Q2, the trigger element Q2 is turned on, and the charge of the capacitor C0 is reduced by the trigger element Q2 and the step-up transformer T.
It discharges through the 0 primary winding.

The number of turns on the primary side of the step-up transformer T0 is 20
The number of turns on the secondary side is 2000 to 3000
As described above, a large current flows through the primary side as described above, and a high voltage is obtained on the secondary side. The voltage V2 obtained on the secondary side is several tens of kV. This voltage is applied to the discharge electrodes P1 and P2 having a predetermined interval, and the discharge electrodes P1 and P2 are applied.
Discharge is caused between P2.

The step-up transformer T0 is configured as shown in FIG. 4, and the core 24 is formed by laminating thin sheets of amorphous metal. The electric insulator 25 is formed of a resin or the like, and holds the core 24 and forms a bobbin of the primary winding 26. A secondary winding 27 is provided outside the primary winding 26.
The bobbin 28 is made of an electric insulator such as a resin. Since the bobbin 28 has a high voltage generated in the secondary winding 27, a barrier is provided on the bobbin so that no leakage occurs between the windings, and the secondary winding is divided into windings. Other configurations are the same as those in the first embodiment.

The operation of the above configuration will be described. The ignition section 5 is incorporated in the heating unit 1 as shown in FIG. This means that the high voltage generated from the ignition section 5
When the spark is generated in the discharge electrode 22 by sending to the discharge electrode 22 provided therein, the wiring length of the high voltage is shortened as much as possible,
This is for suppressing generation of noise. Further, the heating unit 1 needs to be arranged close to the heated portion, and needs to be as small and lightweight as possible.

The size of the ignition section 5 is limited by the step-up transformer T0 and the capacitor C0. By forming the core 24 of the step-up transformer T0 by laminating amorphous metal thin plates, the amorphous metal thin plate has a large saturation magnetic flux density and a large magnetic permeability as shown in (Table 1). Therefore, the size of the step-up transformer T0 can be reduced. In addition,
In Table 1, an iron-based amorphous material is used as the amorphous metal thin plate, and is compared with a ferrite for a high-frequency transformer.

[0051]

[Table 1]

Further, by forming the core 24 of the step-up transformer T0 by laminating thin sheets of amorphous metal, the core is strong against impact, and the conventional ferrite core may be damaged by a drop impact or the like. Absent. Further, as shown in FIG. 5, when the step-up transformer T0 is mounted on the printed circuit board P, the height H of the step-up transformer T0 can be reduced, and the mounting of the ignition unit 5 can be facilitated.

(Embodiment 3) The capacitor C0 in FIG.
Is made of polypropylene. Other configurations are the same as those in the first or second embodiment.

The operation of the above configuration will be described. When the dielectric of the capacitor C0 is made of polypropylene, the dielectric loss tangent is smaller than that of the capacitor made of polyester, as shown in Table 2 below. The loss in the capacitor C0 is small, and the large current
It can flow to the next side, and a high voltage and high energy spark can be obtained in the electrode section. In addition, since the power consumption of the capacitor is small, a highly reliable ignition portion that can be used without any problem for a long time without damaging the capacitor can be configured.

[0055]

[Table 2]

Further, since the size of the condenser C0 can be reduced, and as shown in FIG. 5, the condenser C0 can be reduced, the ignition part 5 can be made smaller and the heating unit 1 can be made smaller. it can.

[0057]

As described above, according to the first aspect of the present invention, a combustion section that generates heat by oxidizing a fuel gas and air, and a temperature detection section that detects the temperature of the combustion section Unit, a fuel adjustment unit that controls supply of fuel gas to the combustion unit, an ignition unit that ignites the output fuel gas from the fuel adjustment unit, and an output signal of the temperature detection unit that inputs an output signal of the temperature detection unit. And a control unit for controlling the ignition unit, and the fuel adjustment unit, the ignition unit, comprising a power supply unit for operating the control unit, since the power supply unit is configured to have a plurality of voltage outputs,
Optimum power supply voltage can be applied to each of the fuel control unit, ignition unit, and control unit. The fuel control unit, ignition unit, and control unit can be configured as independent units, and the temperature of the combustion unit can be set freely. In addition, the temperature can be accurately controlled with a simple configuration, and in the case of poor ignition, the ignition operation can be reliably performed by controlling the ignition unit to operate the ignition unit again.

According to the second aspect of the present invention, the power supply unit includes the battery unit and the boosting unit that boosts the output voltage of the battery unit, and outputs the output of the battery unit or the output of the boosting unit. Since the ignition unit or the fuel adjustment unit or the control unit is configured to operate, the ignition unit or the fuel adjustment unit that consumes a large amount of current is operated directly by the output of the battery unit, and the control unit configured by an IC such as a microcomputer is the battery unit. By increasing the output voltage of the control unit and applying the voltage to the control unit to a voltage that allows sufficient operation, the output of the control unit can be used to control the fuel adjustment unit, so that it is easy to use, such as high-precision temperature control and variable control temperature. A device can be obtained.

According to the third aspect of the present invention, there is provided a combustion section for generating heat by oxidizing a fuel gas and air, and a fuel adjusting section for controlling supply of the fuel gas to the combustion section. An ignition unit for igniting the output fuel gas from the fuel control unit, wherein the ignition unit supplies a pulse current to the primary side of the step-up transformer and obtains a high voltage on the secondary side to generate a spark. Since the core of the step-up transformer is formed by laminating thin sheets of amorphous metal, the core of the step-up transformer can be made smaller, the step-up transformer can be formed thin and small and light, and the ignition unit can be made small and lightweight. A convenient catalytic combustion device can be obtained.

According to the fourth aspect of the invention, there is provided a combustion section for generating heat by oxidizing a fuel gas and air, a fuel adjusting section for controlling supply of the fuel gas to the combustion section, An ignition unit for igniting the fuel gas output from the fuel control unit. The ignition unit supplies a discharge current of the electric charge charged to the capacitor to the primary side of the step-up transformer, and obtains a high voltage to the secondary side to generate a spark. And the dielectric of the capacitor is made of polypropylene, the loss in the capacitor is small, a large current can flow to the primary side of the step-up transformer, and a high voltage and a large energy can be applied to the discharge electrode. You can get a spark. In addition, since the power consumption of the capacitor is small, a highly reliable ignition portion that can be used without any problem for a long time without damaging the capacitor can be configured.

[Brief description of the drawings]

FIG. 1 is a block diagram of a catalytic combustion device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the catalytic combustion device.

FIG. 3 is a circuit diagram of an ignition section of the catalytic combustion device.

FIG. 4 is an enlarged sectional view of a step-up transformer in an ignition section of the catalytic combustion device.

FIG. 5 is a partially cutaway perspective view of an ignition portion of the catalytic combustion device.

FIG. 6 is a sectional view of a conventional catalytic combustion device.

FIG. 7 is a circuit diagram of another example of an ignition section of the catalytic combustion device.

FIG. 8 (a) is a terminal voltage waveform diagram of a capacitor in an ignition portion of the catalytic combustion device. FIG. 8 (b) is a discharge current waveform diagram of a capacitor in an ignition portion of the catalytic combustion device. Secondary voltage waveform diagram of transformer

[Explanation of symbols]

 3 Combustion unit 4 Temperature detection unit 5 Ignition unit 7 Fuel control unit 11 Control unit 12 Power supply unit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenjiro Tomita 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (4)

[Claims] 1. A combustion unit that generates heat by oxidizing a fuel gas and air to generate heat, a temperature detection unit that detects a temperature of the combustion unit, and a fuel adjustment unit that controls supply of the fuel gas to the combustion unit. An ignition unit that ignites the output fuel gas from the fuel adjustment unit, a control unit that receives an output signal of the temperature detection unit and controls the fuel adjustment unit and the ignition unit, the fuel adjustment unit, and an ignition unit And a power supply unit for operating a control unit, wherein the power supply unit has a plurality of voltage outputs. 2. The power supply section includes a battery section and a booster section for boosting an output voltage of the battery section, and operates an ignition section, a fuel adjustment section, or a control section by the output of the battery section or the output of the booster section. 2. The catalytic combustion device according to claim 1, wherein the catalytic combustion device is configured to perform the control. 3. A combustion unit that generates heat by oxidizing a fuel gas and air to generate heat, a fuel adjustment unit that controls supply of the fuel gas to the combustion unit, and ignites an output fuel gas from the fuel adjustment unit. An ignition section for generating a spark by applying a pulse current to the primary side of the step-up transformer and obtaining a high voltage on the secondary side, and forming a core of the step-up transformer into a thin plate of amorphous metal. Is a catalytic combustion device configured by laminating. 4. A combustion unit that generates heat by oxidizing a fuel gas and air to generate heat, a fuel adjustment unit that controls supply of the fuel gas to the combustion unit, and ignites an output fuel gas from the fuel adjustment unit. An ignition unit that performs a discharge current of the electric charge charged to the capacitor on the primary side of the step-up transformer, and obtains a high voltage on the secondary side to generate a spark; A catalytic combustion device whose body is made of polypropylene.