JP3845985B2 - Catalytic combustion device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a portable catalytic combustion apparatus that can be used in high altitudes, offshore areas, and cold areas where it is difficult to supply power and gas.
[0002]
[Prior art]
As portable heaters, there are widespread use of kerosene using petroleum fuel as an energy source. However, with a squirrel furnace, it is not possible to heat a wide area of the human body simply by heating the local area.
[0003]
In addition, heating clothes and mats with a battery and electric resistors distributed inside are considered, but current batteries have a low energy density per weight and provide sufficient heat for a long time. It cannot be supplied to the mat. If enough heat is supplied for a sufficient time, the battery becomes large and extremely heavy, making it unsuitable for carrying.
[0004]
Therefore, a catalytic combustion device has been developed that burns petroleum-based fuels with a much higher energy density than batteries, heats liquids such as water, and circulates the liquid at an appropriate temperature in the main body of the equipment to warm the whole. ing. Further, a catalytic combustion apparatus that uses butane gas and a combustion catalyst to warm the whole by catalytic combustion has been developed.
[0005]
[Problems to be solved by the invention]
In the conventional catalytic combustion apparatus using the catalytic combustion, it is unclear whether or not the fuel gas was surely ignited at the time of starting, and if the ignition fails, the user does not know the fuel gas as it is. It has the problem of being released. Moreover, even if it turns out that ignition has failed, the user has the subject that it is necessary to perform ignition operation again.
[0006]
In addition, when it is impossible to ignite due to equipment failure or for some reason, it is necessary to immediately stop the equipment and stop the release of unnecessary fuel gas.
[0007]
Further, a battery is often used as the power source of such a catalytic combustion apparatus, and the usage time of the device depends on the capacity of the battery. Therefore, in order to lengthen the usage time of the device, there is a problem that it is necessary to reduce the power consumption of the device.
[0008]
[Means for Solving the Problems]
The present invention solves the problems of the above-described conventional configuration , and includes a control unit that controls the fuel adjustment unit and the ignition unit by an input from the temperature detection unit, and the control unit includes: A temperature storage unit that stores the temperature of the combustion unit at the start of ignition, and a decrease determination unit that determines whether the temperature of the combustion unit has decreased from the output of the temperature detection unit and the temperature storage unit to the temperature at the time of ignition And a control unit that controls the fuel adjustment unit and the ignition unit based on outputs of the decrease determination unit and the temperature detection unit, and the control unit reduces the temperature of the combustion unit to a temperature at the time of starting. In addition, the ignition unit is driven again to perform an ignition operation.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention includes a combustion section that has a combustion catalyst and generates heat by oxidizing a fuel gas and air, a temperature detection section that detects the temperature of the combustion section, and the combustion section The fuel adjustment unit that controls the supply of the fuel gas to the fuel, the ignition unit that ignites the fuel gas supplied to the combustion unit, and the fuel adjustment unit and the ignition unit that are controlled by input from the temperature detection unit A temperature storage unit that stores the temperature of the combustion unit at the start of ignition, and the temperature of the combustion unit from the output of the temperature detection unit and the temperature storage unit to the temperature at the time of ignition. And a control unit that controls the fuel adjusting unit and the ignition unit based on outputs of the decrease determining unit and the temperature detecting unit, and the control unit controls the combustion. If the temperature of the By driving the ignition portion again it has to perform the ignition operation, if the temperature of the combustion unit is lowered to a temperature at starting, by driving the ignition unit again corresponds to the misfire by performing ignition operation automatically A catalytic combustion apparatus that performs reignition and performs reliable ignition.
[0010]
The invention according to claim 2 of the present invention, in addition to the first aspect of the invention, and a timing unit that measures an elapsed time after the ignition portion operate with are initialized for each operation of the ignition portion, the If the completion of ignition is not detected even after a predetermined time has elapsed after the ignition unit is driven, the temperature of the combustion unit decreases to the temperature at the start or decreases to the predetermined temperature by driving the ignition unit In this case, the catalyst combustion apparatus automatically performs re-ignition when a predetermined time has elapsed after driving of the ignition unit, which is timed by the timing unit, and performs reliable ignition.
[0011]
The invention according to claim 3 of the present invention comprises, in addition to the invention according to claim 1 , an ignition determination means for determining that the combustion gas has ignited by the ignition portion, so that the ignition determination means confirms the ignition. In addition, when the temperature of the combustion section is lowered to a predetermined temperature by the control section, the catalytic combustion apparatus performs re-ignition automatically in response to misfiring to perform reliable ignition by driving the ignition section again and performing an ignition operation. It is said.
[0012]
The invention described in claim 4 of the present invention has a counting unit for counting the number of operations of the ignition unit in addition to the invention described in claim 1 , and the control means is a predetermined temperature or a temperature at the time of ignition from the output of the temperature detection unit. The ignition unit is driven when the temperature of the combustion unit has dropped to a point, and when the ignition operation is executed a predetermined number of times by the output of the counting unit, the fuel adjustment unit is controlled by the output of the decrease determination unit to stop the fuel gas Thus, the counting unit counts the number of times the ignition unit is driven by the control unit, and the control unit controls the fuel adjustment unit when the ignition determination unit cannot confirm the ignition even if the ignition unit is driven a predetermined number of times by the control unit. Thus, the fuel gas supply is stopped, and the operation of the equipment is stopped, so that the release of unnecessary fuel gas is suppressed and the highly safe catalytic combustion apparatus is provided.
[0013]
【Example】
( Reference Example 1)
Figure 1 is a configuration diagram showing the main configuration of the present reference example, and FIG. 2 is a block diagram. Reference numeral 11 denotes a heating sheet, which is made of a heat conductive material such as a metal foil, a metal mesh, or a heat conductive fiber having good heat conductivity. Examples of the heat conductive fiber include a fiber knitted glass yarn with good thermal diffusibility, a knitted glass fiber, a woven carbon fiber, and a synthetic resin that is flexible around the yarn such as natural fiber or synthetic fiber. A material formed by forming a metal particle layer dispersed in a binder, a material composed of metal fibers, or a material in which metal fibers and non-metal fibers are interwoven are used.
[0014]
A fuel unit 41 includes a gas cartridge, a gas on-off valve, and a fuel adjustment unit 8. Reference numeral 42 denotes a heating unit, which includes a combustion unit 3, an ignition unit 4, and a temperature detection unit 1. Further, reference numeral 43 denotes a controller unit which includes an ignition determination means 2 and a control means 5.
[0015]
The ignition unit 4 is composed of an ignition circuit and an ignition electrode, and uses a battery to generate a high pressure of about 10 kV to 15 kV by a booster circuit in the ignition circuit, and generates a spark by the ignition electrode to flow through the combustion chamber. Burn the gas. When this mixed gas is ignited by the ignition part 4, the combustion catalyst 32 is combusted.
[0016]
The ignition determination means 2 stores a temperature setting value for determining that the fuel gas has ignited, and the combustion temperature is stored in the setting memory 21 from the output of the temperature detector 1. It is comprised from the determination part 22 which determines whether it is more than predetermined temperature.
[0017]
Further, the fuel adjusting unit 8 actually uses an electromagnetic valve that can be electrically opened and closed. In addition, a temperature detection unit 1 is installed in the combustion unit 3 to detect the temperature in the combustion unit 3. Further, the control unit 5 is provided with a display unit 7 connected by electric wires.
[0018]
When the user closes the start switch 9, the gas on-off valve linked to the start switch 9 is opened and the power switch linked to the start switch 9 is closed, whereby the power from the dry cell is supplied to each part. When power is supplied to the control means 5, the fuel adjustment unit 8 is opened and the ignition unit 4 is operated simultaneously to perform an ignition operation. When the fuel adjustment unit 8 is opened by the control means 5, the fuel gas stored in the gas cartridge is supplied to the combustion unit 3 through the gas on-off valve and the fuel adjustment unit 8.
[0019]
Then, as described above, the fuel gas is ignited by the spark from the igniter 4 and combustion is started.
[0020]
Hereinafter, the operation of this embodiment will be described. When the user operates the start switch 9, the control means 5 opens the fuel adjustment unit 8 to supply fuel gas, and the mixed gas is supplied to the combustion chamber 3. In the combustion chamber 3, since the control means 5 drives the ignition circuit to generate a high voltage, the ignition electrode generates a spark and the mixed gas is ignited.
[0021]
When the mixed gas is ignited, the combustion catalyst starts to burn. As described above, when the fuel gas is ignited and the combustion catalyst is surely combusted, the temperature in the combustion chamber detected by the temperature detector 1 rises. At this time, in this embodiment, the determination unit 22 monitors the temperature inside the combustion unit 3 detected by the temperature detection unit 1 and determines that the fuel gas stored in the setting storage unit 21 has ignited. Compare with When the temperature reaches a preset temperature, the fact is output to the control means 5 and the control means 5 notifies the fact by the display 7.
[0022]
As described above, the present embodiment is a catalytic combustion apparatus that can perform a reliable ignition determination by determining whether the temperature of the combustion section 3 after ignition reaches a predetermined temperature by the temperature detection section 1 and determining the ignition of the fuel gas. It is said.
[0023]
( Reference Example 2)
Next, a second reference embodiment of the present invention will be described. In this embodiment, as shown in FIG. 3, the ignition determination means 2 stores the temperature storage unit 23 that stores the temperature during operation of the ignition unit, and the combustion unit temperature is stored in the temperature storage unit 23 from the output of the temperature detection unit 1. And a rise determination unit 24 for judging whether or not the temperature has risen by a predetermined temperature or more from the temperature at which the ignition unit is operated.
[0024]
With the above configuration, in this embodiment, when the user closes the start switch 9, the control means 5 opens the fuel adjustment unit 8, controls the ignition unit 4 and starts ignition, and the temperature storage unit 23 detects the temperature at that time. The internal temperature of the combustion unit 3 detected by the unit 1 is stored.
[0025]
And after the control means 5 controls the ignition part 4 and complete | finishes ignition operation (for example, it is made to complete | finish for a fixed time), the raise determination part 24 monitors the temperature inside the combustion part 3 detected by the temperature detection part 1. FIG. Then, it is determined whether or not the temperature of the combustion unit 3 before ignition stored in the temperature storage unit 23 has increased by a predetermined temperature or more. When the temperature rises above a predetermined temperature, the fact is output to the control means 5, and the control means 5 notifies the fact by the display / operation unit 7.
[0026]
As described above, in the present embodiment, it is possible to make a reliable ignition determination by determining whether or not the fuel gas is ignited by the temperature detection unit 1 because the temperature of the combustion unit 3 after ignition has risen by a predetermined temperature or more from before the ignition. It is a catalytic combustion device.
[0027]
( Reference Example 3)
Next, a third reference embodiment of the present invention will be described. In the present embodiment, as shown in FIG. 4, the control unit 5 sets the re-ignition determination temperature setting value for driving the ignition unit 4 again in the event of a misfire, the temperature detection unit 1 and the setting. A reduction determination unit 52 that determines whether or not the combustion unit temperature has decreased to a predetermined temperature from the output of the storage unit 51, and the fuel adjustment unit 8 and the ignition unit 3 based on the outputs of the decrease determination unit 52 and the temperature detection unit 1. It is comprised from the control part 53 which controls.
[0028]
With the above configuration, when the user closes the start switch 9, the control unit 53 opens the fuel adjusting unit 8, controls the ignition unit 4, and starts ignition.
[0029]
And after the control part 53 controls the ignition part 4 and complete | finishes ignition operation (for example, it is made to complete | finish for a fixed time), the setting temperature which the setting memory | storage part 51 has memorize | stored and the combustion part which the temperature detection part 1 detects When the temperature of the combustion part falls below a predetermined temperature stored in the setting storage part 51 due to misfiring or the like, the reduction judgment part 52 compares the temperature and outputs the fact to the control part 53, and the control part 53 ignites. The unit 4 is driven to perform reignition.
[0030]
As described above, in this embodiment, the decrease determination unit 52 determines whether or not the temperature of the combustion unit has decreased to a predetermined temperature after ignition, and when it decreases, the ignition unit 4 is driven to perform re-ignition. It is a catalytic combustion device that provides reliable combustion that automatically performs re-ignition in response to misfire of the part.
[0031]
(Example 1 )
Next, a first embodiment of the present invention will be described. In the present embodiment, as shown in FIG. 5, the control means 5 includes a temperature storage unit 54 that stores the temperature during operation of the ignition unit, and the combustion unit 3 after ignition from the outputs of the temperature detection unit 1 and the temperature storage unit 54. A determination unit 52 for determining whether or not the temperature of the fuel has decreased to the temperature before ignition, and a control for controlling the fuel control unit 8 and the ignition unit 3 based on the outputs of the decrease determination unit 52 and the temperature detection unit 1. The unit 53 is configured.
[0032]
With the above configuration, when the user closes the start switch 9, the control unit 53 opens the fuel adjustment unit 8, controls the ignition unit 4 and starts ignition, and the temperature storage unit 54 detects the temperature at that time. The internal temperature of the combustion unit 3 detected by the unit 1 is stored. And after the control part 53 controls the ignition part 4 and complete | finishes ignition operation (for example, it is made to complete | finish for a fixed time), the temperature of the combustion part 3 before the ignition which the temperature memory | storage part 54 has memorize | stored, and a temperature detection part 1 is detected by the lowering determination unit 52, and if the combustion unit temperature falls below the temperature stored in the temperature storage unit 54 due to misfiring or the like, or if there is no temperature increase at all, that effect Is output to the control unit 53, and the control unit 53 drives the ignition unit 4 to perform re-ignition.
[0033]
As described above, in this embodiment, the decrease determination unit 52 determines whether or not the combustion unit temperature has decreased to the temperature before ignition after ignition, and when it decreases, the ignition unit 4 is driven to perform re-ignition. The catalytic combustion apparatus provides reliable combustion that automatically performs re-ignition in response to misfiring of a combustion section.
[0034]
( Reference Example 4 )
Next, a fourth reference embodiment of the present invention will be described. In this embodiment, as shown in FIG. 6, it has a timer 13 for measuring the operation time of the device body. The control means 5 controls the ignition unit 4 and the fuel adjustment unit 8 from the outputs of the temperature detection unit 1 and the time measuring unit 15.
[0035]
The operation of this embodiment having the above configuration will be described. When the user closes the start switch 9, the control means 5 opens the fuel adjustment unit 8, controls the ignition unit 4 and starts ignition, and the timer unit 15 starts measuring time.
[0036]
After the ignition operation is completed, the decrease determination unit 52 compares the set temperature stored in the setting storage unit 51 with the combustion unit temperature detected by the temperature detection unit 1, and the control unit 5 decreases the time measured by the time measuring unit 15. The output from the determination unit 52 is monitored. Thereby, the control part 53 drives the ignition part 4 and performs re-ignition when predetermined time passes or the temperature inside the combustion part 3 falls to predetermined temperature.
[0037]
As described above, according to the present embodiment, in addition to the case where the temperature of the combustion section 3 is lowered to a predetermined temperature due to misfire or the like, combustion is performed by driving the ignition section 4 and performing reignition after a predetermined time after the ignition operation. When the temperature inside the unit 3 is lowered due to misfire, the catalytic combustion apparatus is configured to facilitate ignition in the re-ignition operation by performing the re-ignition operation before the temperature is lowered to a predetermined temperature.
[0038]
In the present embodiment, the determination of re-driving of the ignition unit 4 by the control means 5 is performed when the temperature is lowered to a predetermined temperature. it is configured so as to perform the ignition of course to obtain the same effect.
[0039]
(Example 2 )
Next will be described a second embodiment of the present invention. In the present embodiment, as shown in FIG. 7, it is cleared every time the ignition unit 4 is driven, and has a timer unit 13 that measures the elapsed time after the ignition operation. Further, the ignition determination means 2 described in the first and second embodiments for determining success or failure of ignition of the fuel gas is provided.
[0040]
With the above configuration, when the user operates the start switch 9 to close, the control means 5 opens the fuel adjustment unit 8 to control the ignition unit 4 to start ignition, and the timer unit 15 starts measuring time. . After completion of the ignition operation, the control means 5 determines whether or not the ignition has been successfully performed within a predetermined time based on the outputs from the ignition determination means 2 and the timer unit 15.
[0041]
When the ignition completion means 2 does not detect completion of ignition within a predetermined time, the control means 5 controls the ignition unit 4 to perform re-ignition and at the same time clears the time counted by the time measuring unit 15. That is, the re-ignition is repeated when the control means 5 does not detect completion of ignition within a predetermined time after the ignition operation.
[0042]
As described above, according to the present embodiment, as a catalytic combustion device that provides reliable combustion by automatically performing re-ignition and repeating this when ignition completion is not detected even after a predetermined time has elapsed after the ignition operation. Yes.
[0043]
(Example 3 )
Next, a third embodiment of the present invention will be described. In the present embodiment, as shown in FIG. 8, the control means 5 has a setting storage unit 51 that stores a reignition determination temperature setting value that drives the ignition unit 4 again in the event of a misfire, and a temperature detection unit 1 and a setting. A reduction determination unit 52 that determines whether or not the combustion unit temperature has decreased to a predetermined temperature from the output of the storage unit 51, and the fuel adjustment unit 8 and the ignition unit 3 based on the outputs of the decrease determination unit 52 and the temperature detection unit 1. And includes an ignition determination means 2 described in the first and second embodiments for determining whether or not the fuel gas is ignited.
[0044]
With the above configuration, after the ignition operation, after the completion of ignition is detected by the ignition determination means 2, the set temperature stored in the setting storage unit 51 and the combustion unit temperature detected by the temperature detection unit 1 are reduced. When the judgment part 52 compares and the combustion part temperature falls below the predetermined temperature memorize | stored in the setting memory | storage part 51 by misfire etc., the fact is output to the control part 53, and the control part 53 drives the ignition part 4 And reignite.
[0045]
As described above, according to the present embodiment, once the completion of ignition is detected, when the misfire is caused for some reason and the temperature of the combustion section decreases to a predetermined temperature, the ignition section 4 is driven and reignition is performed. Even after completion of ignition, the catalytic combustion apparatus provides reliable combustion that automatically performs reignition in response to misfiring of the combustion section. In the present embodiment, the determination of re-driving of the ignition unit 4 by the control means 5 is performed when the temperature is lowered to a predetermined temperature. It goes without saying that the same effect can be obtained even if it is configured to perform ignition.
[0046]
(Example 4 )
Next, a fourth embodiment of the present invention will be described. In the present embodiment, as shown in FIG. 9, a counting unit 16 that counts the number of operations of the ignition unit 4 is provided, and the control unit 53 is configured to reduce the combustion unit temperature from the output of the temperature detection unit 1 to a predetermined temperature. The ignition unit is driven, and when the ignition operation is executed a predetermined number of times by the output of the counting unit 16, the fuel adjusting unit 8 is controlled by the output of the lowering determination unit 52 to stop the fuel gas.
[0047]
The operation of the present invention having the above configuration will be described. When the user closes the start switch 9, the control unit 53 opens the fuel adjustment unit 8 to control the ignition unit 4 to start ignition and count up the counting unit 16 to count the number of operations of the ignition unit 4.
[0048]
And after the control part 53 controls the ignition part 4 and complete | finishes ignition operation (for example, it is made to complete | finish for a fixed time), the setting temperature which the setting memory | storage part 51 has memorize | stored and the combustion part which the temperature detection part 1 detects When the temperature of the combustion part falls below a predetermined temperature stored in the setting storage part 51 due to misfiring or the like, the reduction judgment part 52 compares the temperature and outputs the fact to the control part 53, and the control part 53 ignites. The unit 4 is driven to perform re-ignition and the counting unit 16 is counted up to count the number of operations of the ignition unit 4. In the control unit 53, the number of operations of the ignition unit 4 counted by the counting unit 16 reaches a predetermined number of times (for example, four times) each time the decrease determination unit 52 detects that the combustion unit temperature has decreased below a predetermined temperature. If the predetermined number of times has not been reached, the ignition unit 4 is operated and the counting unit is counted up.
[0049]
When the predetermined number of times has been reached (when ignition is performed four times), the fuel adjusting unit 8 is controlled to cut off the fuel gas.
[0050]
As described above, in the present embodiment, the decrease determination unit 52 determines whether or not the combustion unit temperature has decreased to a predetermined temperature, and when it has decreased, the control unit 53 confirms the number of ignitions from the output of the counting unit 16. If the predetermined number of times has already been executed, the fuel adjustment unit 8 is controlled to stop the fuel gas, and the ignition cannot be performed even if the predetermined number of times of ignition operation is performed due to a failure of the ignition unit or other factors. The catalytic combustion apparatus ensures the safety of stopping the ejection of unnecessary fuel gas.
[0051]
In the present embodiment, the determination of re-driving of the ignition unit 4 by the control means 5 is performed when the temperature is lowered to a predetermined temperature. it is configured so as to perform the ignition of course to obtain the same effect.
[0052]
( Reference Example 5 )
Next, a fifth reference embodiment of the present invention will be described. In this embodiment, as shown in FIG. 10, the lamp heights 71 to 74 for display and the setting switch 75 are provided, and the display unit 7 for displaying the operation state of the device is provided. When the completion of ignition is confirmed by the above, the display method by the display unit is changed.
[0053]
The operation of the present invention having the above configuration will be described. When the user operates the start switch 9, the control means 5 controls the fuel adjustment unit 8 to supply fuel gas to the combustion unit 3, controls the ignition unit 4 to perform an ignition operation, and displays the display unit 7 with, for example, a lamp height. 71 is blinked (for example, 0.2 seconds ON, 0.1 seconds OFF) to notify that the device has started.
[0054]
Here, the lamp heights 71 to 73 of the display section correspond to the high temperature, medium temperature, and low temperature of the operating temperature set values of the combustion apparatus of the present embodiment, respectively, the lamp 71, the lamp 72, and the lamp 73, and the lamp off 74 stops the equipment. Corresponds to the case. Each time the setting switch 75 is pressed, the set temperature is switched from high temperature → medium temperature → low temperature → off (device stop) → high temperature.
[0055]
When combustion of the combustion catalyst 32 is started by the ignition operation, the temperature inside the combustion unit 82 detected by the temperature detection unit 1 increases. At this time, the determination unit 22 monitors the temperature inside the combustion unit 3 detected by the temperature detection unit 1 and compares it with a temperature set value for determining that the fuel gas stored in the setting storage unit 21 has ignited. When the temperature reaches a preset temperature, a message to that effect is output to the control means 5 and the control means 5 changes the display method of the display unit 7. For example, when the lamp 71 is blinking, the control unit 53 delays the blinking cycle of the lamp 71 (for example, 0.3 second ON, 0.7 second OFF), and notifies the user to that effect.
[0056]
As described above, in this embodiment, when the determination unit 22 detects completion of ignition, the control unit 53 changes the display method of the display unit 7 to notify the user of that fact. In other words, the catalytic combustion apparatus can notify the user that the completion of the ignition is detected without changing the display method of the existing display lamps and requiring special display means.
[0057]
In this embodiment, the display method has been described by changing the blinking cycle. However, the same effect can be obtained by changing from blinking to lighting or from lighting to blinking. the has been described by performing when it reaches a predetermined temperature, to obtain a structure with the same effect even as a determination by the predetermined temperature rise from the temperature of the pre-ignition operation as in example 2 is needless to say Yes.
[0058]
( Reference Example 6 )
Next, a sixth reference embodiment of the present invention will be described. In the present embodiment, as shown in FIG. 11, the control unit 5 includes a temperature detection control unit 55 that controls the frequency of operation of the temperature detection unit 1 based on the output of the ignition determination unit 2, and the temperature detection unit 1 and the ignition determination. The fuel control unit 8 and the control unit 53 that controls the ignition unit 4 are configured by the output of the means 2.
[0059]
Further, as shown in FIG. 12, the temperature detector 1 divides the power supply voltage by a temperature sensor 1a composed of a thermistor or the like, a resistor 1b and a capacitor 1c, and detects the divided voltage by an AD converter 1d or the like. It is realized with a circuit that This AD converter 1d converts an analog input into a digital signal and outputs it. As described above, when a voltage divided by the temperature sensor 1a and the resistor 1b is input, a digital output corresponding to the temperature detected by the temperature sensor 1a is output. In general, when this conversion is performed, a current of about several mA is consumed.
[0060]
The operation of the present invention having the above configuration will be described. When the user closes the start switch 9, the control means 5 opens the fuel adjustment unit 8, controls the ignition unit 4, and starts ignition. When the ignition determination means 2 detects the completion of ignition from the output of the temperature detection unit 1 after the ignition operation is completed, the fact is output to the temperature detection control unit 55 and the control unit 53. The temperature detection control unit 55 switches so that the execution frequency of the temperature detection unit 1 is reduced by this ignition completion signal. (For example, the driving of the temperature detection unit once every 0.1 second before completion of ignition is switched to once per second after completion of ignition.)
As described above, according to the present embodiment, when the ignition determination unit 2 determines the ignition, the temperature detection unit 1 increases the frequency of execution of the temperature detection unit 1 to accurately detect the ignition, and the ignition determination unit 2 After 2 detects the completion of ignition, the temperature detection unit 1 reduces the execution frequency of the temperature detection unit 1 to reduce the power consumption of the temperature detection unit 1 per unit time, thereby realizing a longer battery life. It is a combustion device.
[0061]
【The invention's effect】
As described above, the invention according to claim 1 of the present invention includes a combustion part that has a combustion catalyst and generates heat by oxidizing the fuel gas and air, a temperature detection part that detects the temperature of the combustion part, A fuel adjustment unit that controls supply of fuel gas to the combustion unit, an ignition unit that ignites the fuel gas supplied to the combustion unit, and an input from the temperature detection unit, the fuel adjustment unit and the ignition unit Control means for controlling the temperature of the combustion part at the start of ignition, a temperature storage part for storing the combustion part temperature, and the combustion from the output of the temperature detection part and the temperature storage part to the temperature at the time of ignition A controller for controlling the fuel adjusting unit and the ignition unit based on the output of the decrease determining unit and the temperature detecting unit, and determining whether or not the temperature of the unit has decreased. As a result, the temperature of the combustor decreased to the starting temperature. The case, it is so arranged perform the ignition unit drives again ignition operation, after ignition operation, the combustion unit temperature to the temperature at the time of ignition can be automatically re-ignition operation at such misfires as reduced .
[0062]
The invention according to claim 2 of the present invention, and a timing unit that measures an elapsed time after being initialized for each operation of wearing the fire section Rutotomoni the ignition unit operation, after driving the ignition portion, predetermined When the completion of the ignition is not detected even after a lapse of time, the ignition unit is driven. Therefore, the re-ignition is automatically performed and this can be repeated to realize reliable combustion .
[0063]
Since the invention according to claim 3 of the present invention has the ignition determination means for determining that the combustion gas has been ignited by the ignition part , after detecting completion of the ignition once, it is misfired for some reason and the temperature of the combustion part is When the temperature is lowered to a predetermined temperature, the ignition unit is driven to perform re-ignition, and even after completion of ignition, reliable combustion can be realized in which re-ignition is automatically performed in response to misfiring of the combustion unit .
[0064]
The invention of claim 4 wherein the present invention has a counting unit for counting the number of operations of the wearing fire unit, the control unit, when the combustion unit temperature to a predetermined temperature or temperature during ignition from the output of the temperature detection portion is lowered the ignition unit drives, because more ignition operation by the output of the counting unit is configured to stop the fuel gas by controlling the fuel control unit from the output of the reduction determination unit when executed predetermined number of times, the ignition portion If ignition cannot be performed even if the ignition operation is performed a predetermined number of times due to a failure or other factors, it is possible to ensure the safety of stopping the ejection of unnecessary fuel gas .
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a catalytic combustion apparatus according to a first embodiment of the present invention. FIG. 2 is a block diagram illustrating a control configuration of the catalytic combustion apparatus . FIG. 3 is a catalytic combustion apparatus according to a second embodiment of the present invention. FIG. 4 is a block diagram showing the configuration of the catalytic combustion apparatus in Reference Embodiment 3 of the present invention. FIG. 5 is a block diagram showing the configuration of the catalytic combustion apparatus in the first embodiment of the present invention. 6] a of the block diagram showing the configuration of a catalytic combustion apparatus in the second embodiment of the block diagram FIG. 7 the invention showing a configuration of a catalytic combustion apparatus in reference example 4 of the invention [8] present invention block diagram showing the configuration of a catalytic combustion apparatus in embodiment 3 of 9 catalytic combustion in reference example 5 of the fourth block diagram showing a configuration of a catalytic combustion apparatus in the embodiment of the invention; FIG of the present invention Configure the device FIG. 11 is a block diagram showing a configuration of a catalytic combustion apparatus in Reference Example 6 of the present invention. FIG. 12 is an explanatory diagram of a temperature detection unit of the catalytic combustion apparatus .
DESCRIPTION OF SYMBOLS 1 Temperature detection part 2 Ignition determination means 3 Combustion part 4 Ignition part 5 Control means 7 Display part 8 Fuel control part 15 Time measuring part 16 Counting part

Claims (4)

A combustion unit for generating heat by the fuel gas and air have a combustion catalyst is an oxidation reaction, and a temperature detector for detecting the temperature of the combustion portion, fuel control for controlling the supply of fuel gas to the combustion section and parts, and an ignition unit for igniting the fuel gas supplied to the combustion unit, the input from the temperature sensing unit, and a control means for controlling said ignition section and said fuel control unit, said control means includes a temperature storage unit for storing the combustion portion temperature at the start of ignition, decreased judgment temperature of the combustion section and the temperature detecting portion to the temperature at the time of ignition from the output of the temperature storage unit determines whether decreased comprising a part, and a control unit for controlling said reduction determination unit and said fuel control unit from the output of the temperature detecting portion and the ignition part, the temperature of the combustion portion is lowered to a temperature at the start by the control unit In this case, the ignition unit is driven again to perform the ignition operation. Catalytic combustion apparatus which Migihitsuji. Together they are initialized for each operation of the ignition portion and a timing unit that measures an elapsed time after the ignition unit operation, after driving the ignition unit, even after the lapse of a predetermined time is not detected the completion of the ignition when the catalytic combustion apparatus of claim 1, wherein for driving the ignition unit. Catalytic combustion apparatus 請 Motomeko 1, wherein having an ignition determination means for determining that the ignited combustion gases by igniting unit. The controller has a counting unit that counts the number of operations of the ignition unit, and the control means drives the ignition unit when the temperature of the combustion unit decreases from the output of the temperature detection unit to a predetermined temperature or a temperature at the time of ignition. outputted by the ignition operation is catalytic combustion apparatus according to claim 1, wherein stopping the fuel gas by controlling the fuel control unit from the output of the reduction determination unit when executed a predetermined number of times.

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