JP5243945B2 - Combustion device and gas detection device - Google Patents

Description

  The present invention relates to a combustion apparatus including a combustion unit that burns fuel and a gas detection unit that detects a detection target gas, and a gas detection device that can be attached to such a combustion device.

2. Description of the Related Art There is a combustion apparatus that includes combustion means for burning a gas such as methane or propane or a fuel such as kerosene and uses the combustion heat for heating. For example, if it is a gas fan heater, it is comprised so that air may be heated using the combustion heat obtained by burning gas, and the warmed air may be blown out. In order to use such a combustion apparatus safely, it is necessary to prepare a system for detecting the leakage of combustible gas derived from fuel and the generation of incomplete combustion gas due to incomplete combustion of fuel. . Specifically, it is preferable that the combustion apparatus includes a gas detection unit capable of detecting both the combustible gas and the incomplete combustion gas.
Patent Document 1 describes a gas detection means capable of detecting a combustible gas derived from a fuel and an incomplete combustion gas of the fuel. This gas detection means is configured by housing a detection element for detecting the presence of a combustible gas and an incomplete combustion gas in a cylindrical casing. In addition, a filter to which the non-detection target gas adheres so that the non-detection target gas different from the combustible gas and the incomplete combustion gas to be detected does not enter the inside of the housing in which the detection element is accommodated. The part is provided in the flow path between the outside and the inside of the housing. Examples of the filter part include activated carbon and silica gel.

JP 2000-193623 A

  Combustion devices used for heating, such as fan heaters, are generally kept unused during the summer. Moreover, it is often stored in a closet or the like at the time of storage. That is, the combustion apparatus is stored for a long time in a closet filled with component gases of insect repellents such as naphthalene and paradichlorobenzene. Therefore, when the combustion apparatus is used again in winter, the component gas of the insect repellent is started to be used while being attached to the gas detection means (for example, a detection element or a filter unit). . In such a case, when the temperature of the gas detection means rises with use, the component gas of the insect repellent that has adhered may be released, and the gas detection means may not be able to normally detect the detection target gas. There is sex.

  The present invention has been made in view of the above problems, and its purpose is to prevent the non-detection target gas attached to the gas detection means while not being used from adversely affecting the detection of the detection target gas. It is in the point which provides the comprised combustion apparatus and the gas detection apparatus with which such a combustion apparatus is mounted | worn.

In order to achieve the above object, the characteristic configuration of the combustion apparatus according to the present invention includes combustion means for burning fuel,
Combustion start command receiving means for receiving a combustion start command for the combustion means;
A casing, a detection element that is provided inside the casing and detects a detection target gas including a combustible gas derived from the fuel and an incomplete combustion gas generated by incomplete combustion of the fuel; and A gas detection means having a filter part provided in a flow path extending from the outside of the housing to the inside of the housing where the detection element is provided, to which a non-detection target gas adheres;
Heating means capable of heating the gas detection means;
The gas detection control for determining the presence state of the detection target gas based on the detection result of the detection element, and the combustion means when starting combustion according to the combustion start command received by the combustion start command reception means And a control means capable of executing a heating operation control for heating the heating means for a set period.

According to the above characteristic configuration, in addition to performing normal gas detection control, the control means heats the heating means for a set period when starting combustion according to the combustion start command received by the combustion start command receiving means. The heating operation control is executed. That is, a gas (for example, a component gas of an insect repellent) attached to the gas detection unit while the combustion unit stops burning is forcibly released from the gas detection unit by the heating operation control. As a result, it is possible to prevent the gas that has adhered to the gas detection means while the combustion means has stopped burning from adversely affecting the detection of the detection target gas by the gas detection control.
Therefore, it is possible to provide a combustion apparatus configured such that the non-detection target gas attached to the gas detection means while not being used does not adversely affect detection of the detection target gas.

In order to achieve the above object, the characteristic configuration of the combustion apparatus according to the present invention includes combustion means for burning fuel,
Combustion start command receiving means for receiving a combustion start command for the combustion means;
A casing, a detection element that is provided inside the casing and detects a detection target gas including a combustible gas derived from the fuel and an incomplete combustion gas generated by incomplete combustion of the fuel; and A gas detection means having a filter part provided in a flow path extending from the outside of the housing to the inside of the housing where the detection element is provided, to which a non-detection target gas adheres;
Heating means capable of heating the gas detection means;
Gas detection control for determining the presence state of the detection target gas based on the detection result of the detection element, and the combustion start command receiving means after the combustion means has stopped after the combustion means stops the combustion by the combustion start command receiving means And a control unit capable of performing a heating operation control for heating the heating unit for a set period when a start command is received.

According to the above characteristic configuration, in addition to performing normal gas detection control, the heating unit is set when a combustion start command is received by the combustion start command receiving unit after a predetermined period has elapsed since the combustion unit stopped burning. The heating operation control for performing the heating operation only for a period is executed. That is, gas (for example, a component gas of an insect repellent) attached to the gas detection unit while the combustion unit has stopped burning for a predetermined period or longer is forcibly released from the gas detection unit by heating operation control. In particular, the control means controls the heating operation after a predetermined period has elapsed since the combustion means stopped burning, that is, after a predetermined amount or more of the component gas of the insect repellent was attached to the gas detection means. Execute. As a result, it is possible to prevent the gas that has adhered to the gas detection means while the combustion means has stopped burning from adversely affecting the detection of the detection target gas by the gas detection control.
Therefore, it is possible to provide a combustion apparatus configured such that the non-detection target gas attached to the gas detection means while not being used does not adversely affect detection of the detection target gas.

  Another characteristic configuration of the combustion apparatus according to the present invention is that the control means starts combustion of the combustion means after finishing the heating operation control.

  According to the above characteristic configuration, after the heating operation control is executed and the component gas of the insect repellent adhering to the gas detection unit is released, the combustion unit starts burning. As a result, after the combustion means starts burning, detection of combustible gas and incomplete combustion gas is performed in a state where the component gas of the insect repellent does not adversely affect detection of the detection target gas by gas detection control. Can be executed.

Another characteristic configuration of the combustion apparatus according to the present invention is:
A heating operation command receiving means for receiving a heating operation command of the heating means;
In the heating operation control, the control unit is configured to heat the heating unit for a set period when the heating operation command receiving unit receives a heating operation command of the heating unit.

According to the above characteristic configuration, when the control means receives the heating operation command of the heating means by the heating operation command receiving means, the heating means performs heating operation control for heating the heating means for a set period. That is, the heating operation control is performed based on the judgment of the user of the combustion apparatus, and the gas (for example, the component gas of the insect repellent) attached to the gas detection means is forcibly released. As a result, it is possible to prevent the gas that has adhered to the gas detection means while the combustion means has stopped burning from adversely affecting the detection of the detection target gas by the gas detection control.
Therefore, it is possible to provide a combustion apparatus configured such that the non-detection target gas attached to the gas detection means while not being used does not adversely affect detection of the detection target gas.

  Another characteristic configuration of the combustion apparatus according to the present invention is that the heating means is a resistance heater attached to the casing.

  According to the above characteristic configuration, the heating means can be reduced in size. In addition, when controlling the heating operation of the heating means, it is only necessary to control the energization amount to the resistance heater, so that the heating operation control can be easily executed.

In order to achieve the above object, the gas detector according to the present invention is characterized by combustion means for burning fuel, control means for a combustion device for controlling the operation of the combustion means, and a combustion start command for the combustion means. There is a gas detection device that can be attached to a combustion device comprising a combustion start command receiving means for receiving ,
A casing, a detection element that is provided inside the casing and detects a detection target gas including a combustible gas derived from the fuel and an incomplete combustion gas generated by incomplete combustion of the fuel; and A gas detection means having a filter part provided in a flow path extending from the outside of the housing to the inside of the housing where the detection element is provided, to which a non-detection target gas adheres;
Heating means capable of heating the gas detection means;
Gas detection control for determining the presence state of the detection target gas based on the detection result of the detection element, and control means for gas detection equipment capable of performing heating operation control for heating the heating means for a set period. Prepared,
A heating operation control in which the gas detector control means heats the heating means only for a set period when the combustion means starts combustion according to the combustion start command received by the combustion start command acceptance means as the heating operation control. Alternatively, it is possible to execute a heating operation control for heating the heating unit for a set period when the combustion start command receiving unit receives the combustion start command after a predetermined period or more has elapsed since the combustion unit stopped burning. Composed of
The gas detection device control means is configured to output a determination result of the presence state of the detection target gas to the combustion device control means after the heating operation control is completed.

According to the above characteristic configuration, the control means for gas detection equipment executes the heating operation control for heating the heating means for the set period in addition to executing the normal gas detection control. That is, a gas (for example, a component gas of an insect repellent) attached to the gas detection unit while the combustion unit stops burning is forcibly released from the gas detection unit by the heating operation control. As a result, it is possible to prevent the gas that has adhered to the gas detection means while the combustion means has stopped burning from adversely affecting the detection of the detection target gas by the gas detection control.
Furthermore, since the gas detection device control means outputs the determination result of the presence state of the detection target gas to the combustion device control means after the heating operation control is completed, the combustion device control means has a normal determination result. If there is, the combustion means can start combustion, and when the determination result is abnormal (that is, when combustible gas or incomplete combustion gas is present in a predetermined amount or more), the combustion means does not start combustion, An anomaly state can be notified to the user of the combustion apparatus by operating a notifying means using sound or light.

<First Embodiment>
Hereinafter, a combustion apparatus according to a first embodiment and a gas detection device attached to the combustion apparatus will be described with reference to the drawings.
FIG. 1 is a functional block diagram of a combustion apparatus 10 according to the first embodiment. In this embodiment, a fan heater is illustrated as the combustion device 10. FIG. 2 is a cross-sectional view illustrating the configuration of the gas detection means 4 and the heating means 5 provided in the gas detection device 1.
As illustrated in FIGS. 1 and 2, the combustion apparatus 10 includes a combustion apparatus control unit C <b> 1 (C), a power switch 2, a combustion unit 3, a fan F, and a gas detection device 1. The gas detection device 1 includes a gas detection unit 4, a heating unit 5, and a gas detection device control unit C2 (C). In FIG. 1, the combustion device control means C1 and the gas detection device control means C2 are illustrated as separate devices, but they are configured as an integral control means C, and the control means C is the combustion device 10 and It can also comprise so that operation control of the gas detection apparatus 1 may be performed. The power switch 2 receives commands for starting and stopping the operation of the combustion apparatus 10. That is, the power switch 2 functions as a combustion start command receiving unit that receives a combustion start command for the combustion unit 3. The combustion device control means C1 controls the operation of the combustion means 3 and the fan F according to the operation start command and the operation stop command of the combustion device 10 received by the power switch 2. Specifically, the combustion device control means C1 can burn the fuel such as methane or propane or the fuel such as kerosene by operating the combustion means 3 to generate combustion heat. Further, the combustion device control means C1 can actuate the fan F to form an air flow that sucks air from the intake port 6 and blows it out from the air outlet 7. As a result, while the combustion unit 3 and the fan F are operating in the combustion apparatus 10, the air sucked from the intake port 6 is heated by the combustion heat of the combustion unit 3, and the heated air is discharged from the blowout port 7. Blow out.

  The gas detection device 1 is provided to detect a detection target gas. The detection target gas is a combustible gas derived from the fuel of the combustion means 3 and an incomplete combustion gas generated by incomplete combustion of the fuel. Specifically, as the combustible gas, there is a gas such as methane or propane used as a fuel for the combustion means 3 or a gas in which a liquid such as kerosene used as a fuel for the combustion means 3 is vaporized. Incomplete combustion gas includes carbon monoxide generated by incomplete combustion of fuel in the combustion means 3. The gas detection device 1 is provided near the intake port 6 for sucking in air in the room so that incomplete combustion gas existing in the room where the combustion apparatus 10 is used can be detected correctly.

  The gas detection means 4 included in the gas detection device 1 includes a housing 11, a detection element 12 provided inside the housing 11 for detecting a detection target gas, and a detection element 12 from the outside of the housing 11. It has the filter part 16 provided in the flow path 19 between the inside of the housing | casing 11 provided, and the non-detection object gas adheres. The casing 11 is configured by using cylindrical members having various shapes such as a circular shape or a polygonal cross section, and one end side thereof is opened with an opening 18 provided, and the other end side is a bottom member 20. It is closed by.

The detection element 12 provided inside the housing 11 includes a gas sensitive body 21, a center electrode 14 provided penetrating the inside of the gas sensitive body 21, and around the central electrode 14 inside the gas sensitive body 21. And a lead wire 13 formed in a coil shape so as to surround the. The gas sensitive body 21 changes its electrical resistance characteristically when a combustible gas to be detected adheres at least while it is in a predetermined high temperature range, and the gas sensitive body 21 is on the lower temperature side than the high temperature range. A material whose electrical resistance changes characteristically when incomplete combustion gas to be detected adheres while it is in a predetermined low temperature range is used. For example, a sintered body of a metal oxide semiconductor such as tin oxide (SnO ₂ ) can be used as the gas sensitive body 21. Moreover, it is preferable that this metal oxide semiconductor carries the catalyst for reducing the sensitivity with respect to non-detection object gas other than detection object gas. For example, one or a plurality of types such as Pd, W, Pt, Rh, Ce, Mo, and V can be used as such a catalyst. The gas sensitive body 21 can have various shapes such as a spherical shape, an elliptical spherical shape, and a plate shape.

  In the detection element 12, one end of the lead wire 13 is connected to the terminal 15a, the other end of the lead wire 13 is connected to the terminal 15c, and the center electrode 14 is connected to the terminal 15b. A portion of the lead wire 13 formed in a coil shape and embedded in the gas sensitive body 21 functions as a heater for heating the gas sensitive body 21. In the present embodiment, the heater formed by the coiled portion is different from the heating means 5. Further, the coiled portion of the lead wire 13 and the center electrode 14 can be used as detection electrodes for detecting a change in electric resistance of the gas sensitive body 21. Each terminal 15a, 15b, 15c penetrates the bottom member 20 and is exposed to the outside of the housing 11, and is used for connection with the gas detection device control means C2.

The detection target gas reaches the detection element 12 inside the housing 11 through the opening 18 and the flow path 19 from the outside of the housing 11. As described above, the filter unit 16 to which the non-detection target gas adheres is provided in the flow path 19 extending from the outside of the housing 11 to the inside of the housing 11 where the detection element 12 is provided. The filter unit 16 is made of activated carbon, silica gel, or the like. Moreover, it can also comprise combining activated carbon and a silica gel. NO _X, vapor of organic solvent such as an alcohol, and silicon vapor is to be gassed are removed by adhering to the filter unit 16. As a result, it is possible to prevent the performance of the detection element 12 from being degraded by NO _x , organic solvent vapor, silicon vapor, or the like. Further, the opening 18 is provided with a wire mesh 17 for preventing foreign matter from entering the inside of the housing 11.

  The heating means 5 is configured to be able to heat the gas detection means 4. The heating means 5 can be configured using a resistance heater that uses Joule heat. In FIG. 2, the heating means 5 using a resistance heater is mounted on almost the entire side surface of the cylindrical housing 11. That is, since the heating means 5 is disposed so as to surround the filter portion 16 and the detection element 12, the temperature of the filter portion 16 and the detection element 12 is reliably increased when the heating means 5 is heated. The gas detection device control means C2 can control the operation of the heating means 5 (that is, the temperature of the gas detection means 4) by controlling the amount of current supplied to the resistance heater mounted outside the casing 11.

The gas detection device control means C2 can execute gas detection control for determining the presence state of the detection target gas based on the detection result of the detection element 12, and heating operation control for heating the heating means 5 for a set period. It is.
When executing the gas detection control, the gas detection device control means C2 increases the amount of current supplied to the lead wire 13 to increase the amount of heat generated in the coiled portion, thereby setting the temperature of the gas sensitive body 21 to a predetermined high temperature range. The presence of the combustible gas is determined with reference to the electrical resistance of the gas sensitive body 21 at that time (that is, the electrical resistance between the coiled portion of the lead wire 13 and the center electrode 14). . In addition, the gas detection device control means C2 reduces the amount of electricity supplied to the lead wire 13 in the gas detection control to reduce the amount of heat generated in the coiled portion, thereby bringing the temperature of the gas sensing body 21 to a predetermined low temperature range. The presence of incomplete combustion gas is determined with reference to the electrical resistance of the gas sensing element 21 at that time (that is, the electrical resistance between the coiled portion of the lead wire 13 and the center electrode 14). . The gas detection device control means C2 outputs the detected amounts of combustible gas and incomplete combustion gas (present state) to the combustion apparatus control means C1. When the combustion device control means C1 determines that the amount (existing state) of the combustible gas detected by the gas detection device 1 exceeds the set threshold value, the combustion means 3 stops combustion, and the detected incomplete combustion gas. If it is determined that the amount (existing state) exceeds the set threshold value, the combustion means 3 is stopped.

  Like this embodiment, the combustion apparatus 10 utilized for heating, such as a fan heater, is generally stored without being used during summer. Moreover, it is often stored in a closet or the like at the time of storage. Therefore, the combustion apparatus 10 is stored for a long time in a closet filled with component gases of insect repellents such as naphthalene and paradichlorobenzene. Therefore, when the combustion apparatus 10 is used again in the winter, the component gas of the insect repellent is started to be used with the gas detection means 4 (for example, the detection element 12 and the filter unit 16) attached. Will be. In such a case, when the temperature of the gas detection means 4 increases with use, the component gas of the insect repellent that has adhered is released and adheres to the gas sensitive body 21, and the gas detection means 4 detects the gas to be detected by the gas detection means 4. There may be a problem that detection cannot be performed normally.

  In view of such a problem, in this embodiment, the gas detection device control means C2 controls the combustion means 3 according to the combustion start command received by the combustion device control means C1 with the power switch 2 (combustion start command reception means). Prior to starting combustion, the above heating operation control is executed. For example, when the combustion device control means C1 starts combustion of the combustion means 3 in accordance with the combustion start command received by the power switch 2 (combustion start command reception means), the heating means 5 is set to the gas detection device 1 for a set period. Only the heating operation control is performed to perform the heating operation. That is, the combustion device control means C1 executes the heating operation control every time a combustion start command is received by the power switch 2 (combustion start command receiving means). The gas detection device 1 executes this heating operation control and heats the gas detection means 4 to a temperature at which the non-detection target gas adhering to the gas detection means 4 is released, whereby the combustion device 10 is heated. However, while the operation is stopped (that is, the combustion means 3 is stopped), the non-detection target gas attached to the gas detection means 4 can be forcibly released as soon as possible.

  Specifically, when the combustion device control means C1 receives the combustion start command by the power switch 2 (combustion start command receiving means), the power switch 2 (combustion start command receiving means) before the combustion means 3 is operated for combustion. ) To notify the gas detection device 1 that the combustion start command has been received, and request the output of the determination result of the presence state of the combustible gas and the incomplete combustion gas. The gas detection device control means C2 of the gas detection device 1 first sets the heating means 5 when there is an output request for the determination result of the existence state of combustible gas and incomplete combustion gas from the combustion device control means C1. The heating operation control for performing the heating operation only for a period is executed. When the gas detection device control means C2 executes the heating operation control of the heating means 5, even if the component gas of the insect repellent adheres to the gas detection means 4, it is released. As a result, it is ensured that the component gas of the insect repellent does not adversely affect the detection of the detection target gas by the gas detection control. Then, after the heating operation control is completed, the gas detection device control means C2 outputs the determination result of the presence state of the detection target gas executed using the gas detection means 4 to the combustion device control means C1.

The combustion device control means C1 starts combustion of the combustion means 3 when the determination result of the presence state of the detection target gas output from the gas detection device 1 is normal. Alternatively, the combustion apparatus control means C1 determines that the detection result of the detection target gas output from the gas detection device 1 is abnormal (that is, a predetermined amount or more of combustible gas or incomplete combustion gas exists). The combustion means 3 is not started to burn, and a notification means (not shown) using sound or light is operated to notify the user of the combustion apparatus 10 of the abnormal state.
As described above, by performing the heating operation control before executing the gas detection control, the component gas of the insect repellent that has adhered to the gas detection means 4 has an adverse effect on the detection of the detection target gas by the gas detection control. It can be prevented.

  In the heating operation control, the heating unit 5 is heated and operated until the electric resistance of the gas sensitive body 21 (that is, the electric resistance between the coiled portion of the lead wire 13 and the center electrode 14) becomes a normal value. (That is, a period until it can be considered that the release of the non-detection target gas such as the component gas of the insect repellent from the gas detection means 4 is completed). This set period can be stored in advance in the internal memory of the gas detection device control means C2, for example, 30 minutes. In that case, it can be configured that the gas detection device control means C2 performs time measurement using an internal timer, and stops the heating operation control when the set period is reached. Alternatively, the gas detection device control means C2 monitors the electric resistance of the gas sensitive body 21 during the execution of the heating operation control, and determines that the set period has elapsed when the electric resistance reaches a normal value, and heats the gas. It can be configured to stop the operation control.

Second Embodiment
The combustion apparatus of the second embodiment is different from the first embodiment in the content of the heating operation control of the heating means executed by the control means for gas detection equipment. Although the structure of the combustion apparatus and gas detection apparatus of 2nd Embodiment is demonstrated below, description is abbreviate | omitted about the structure similar to 1st Embodiment.

  The apparatus configuration of the combustion apparatus of the second embodiment is the same as that illustrated in FIGS. 1 and 2. What is characteristic in the present embodiment is that the gas detection device control means C2 determines the presence state of the detection target gas based on the detection result of the detection element 12, and the combustion means 3 burns. The heating operation control is performed to heat the heating unit 5 for a set period when a combustion start command is received by the power switch 2 (combustion start command receiving unit) after a predetermined period has elapsed since the stop. Specifically, the gas detection device control means C2 measures the period after the combustion means 3 has stopped burning using an internal timer. The period after the combustion means 3 stops burning can be regarded as a period during which the combustion apparatus 10 is stored. Therefore, when a predetermined period or more has elapsed since the combustion means 3 stopped burning, when a predetermined amount or more of the component gas of the insect repellent adheres to the gas detection means 4 and the gas detection control is executed next, It can be considered that there may be a problem that detection of the detection target gas by the gas detection means 4 cannot be performed normally.

In view of such a problem, in the present embodiment, the gas detection device control means C2 has received the power switch 2 (combustion start command receiving means) after a predetermined period has elapsed since the combustion means 3 stopped burning. When starting combustion of the combustion means 3 in accordance with the combustion start command, the gas detection device 1 is caused to perform heating operation control for heating the heating means 5 for a set period.
Specifically, when the combustion device control means C1 receives the combustion start command by the power switch 2 (combustion start command receiving means), the power switch 2 (combustion start command receiving means) before the combustion means 3 is operated for combustion. ) To notify the gas detection device 1 that the combustion start command has been received, and request the output of the determination result of the presence state of the combustible gas and the incomplete combustion gas. When the control unit C2 for the gas detection device 1 of the gas detection device 1 requests the combustion device control unit C1 to output the determination result of the presence state of the combustible gas and the incomplete combustion gas, the combustion unit 3 first burns. It is determined whether or not a predetermined period has elapsed since the stop. And the control means C2 for gas detection apparatuses performs the heating operation control which heats the heating means 5 only for a set period, when the predetermined period or more has passed since the combustion means 3 stopped combustion. As a result, it is ensured that the component gas of the insect repellent does not adversely affect the detection of the detection target gas by the gas detection control. Then, after the heating operation control is completed, the gas detection device control means C2 uses the determination result of the presence state of the detection target gas obtained by the gas detection control executed using the gas detection means 4 as the combustion device control means C1. Output to.
Further, the gas detection device control means C2 has an adverse effect on the detection of the detection target gas by the gas detection control when the combustion means 3 has not combusted for a predetermined period or longer. Since it is determined that it does not reach, the heating operation control is not executed, and the determination result of the presence state of the detection target gas executed using the gas detection means 4 is output to the combustion apparatus control means C1.

< Reference example >
The combustion apparatus of the reference example is different from the above embodiment in the content of the heating operation control of the heating means executed by the control means for gas detection equipment. Although the structure of the combustion apparatus of a reference example is demonstrated below, description is abbreviate | omitted about the structure similar to the said embodiment.

FIG. 3 is a functional block diagram of the combustion apparatus 30 of the reference example . As illustrated in FIG. 3, the combustion device 30 includes a combustion device control unit C1 (C), a power switch 2, a combustion unit 3, a fan F, a gas detection device 1 (a gas detection unit 4, a heating unit 5, and a gas detection unit). Device control means C2 (C)) and heating operation command receiving means 8 are provided. The heating operation command receiving means 8 is a switch for receiving a heating operation command of the heating means 5 from the user of the combustion device 30. When the heating operation command receiving means 8 receives the heating operation command of the heating means 5, the combustion device control means C <b> 1 performs heating operation control that causes the gas detection device 1 to heat the heating means 5 for a set period. Let it run. The gas detection device control means C2 of the gas detection device 1 performs a heating operation control for heating the heating means 5 for a set period when there is an execution command of the heating operation control of the heating means 5 from the combustion device control means C1. Run. When the gas detection device control means C2 executes the heating operation control of the heating means 5, even if the component gas of the insect repellent adheres to the gas detection means 4, it is released. Then, after the heating operation control is completed, the gas detection device control means C2 outputs the determination result of the presence state of the detection target gas executed using the gas detection means 4 to the combustion device control means C1.

As described above, in this reference example , it can be determined whether or not the user of the combustion device 30 performs the heating operation of the heating means 5. In other words, when the user of the combustion device 30 uses the combustion device 30 stored in a closet during the summer again in the winter, the user operates the heating operation command receiving means 8 to heat it before actual use. What is necessary is just to issue the start command of the heating operation of the means 5.

<Another embodiment>
<1>
In the above embodiment, the heating unit 5 is described as being mounted on almost the entire side surface of the cylindrical casing 11 (so that both the filter unit 16 and the detection element 12 are surrounded). The means 5 may be mounted in other forms. For example, the heating unit 5 may be attached to the side surface of the housing 11 so as to surround only the periphery of the filter unit 16. In this case, by heating the heating means 5, the gas adhering to the filter unit 16 (for example, a component gas of an insect repellent) can be surely released.

<2>
In the above embodiment, the heater formed of a coiled portion and embedded in the gas sensitive body 21 is different from the heating means 5, but the heater may be used as the heating means 5.

<3>
The combustion apparatus 10 described in the first embodiment and the second embodiment may be equipped with the heating operation command receiving means 8 and its function described in the reference example . Specifically, the combustion device 10 described in the first embodiment and the second embodiment includes a heating operation command receiving unit 8 that receives a heating operation command of the heating unit 5, and the combustion device control unit C1 includes: When the heating operation command receiving means 8 receives a heating operation command of the heating means 5, the heating operation control is performed to heat the heating means 5 for a set period with respect to the gas detection device control means C <b> 2 of the gas detection device 1. It may be modified so that
That is, when the first embodiment is modified, the gas detection device control means C2 receives the heating operation command when the power switch 2 (combustion start command reception means) instructs the combustion means 3 to start combustion. When the heating operation of the heating means 5 is commanded by the means 8, the heating operation control is executed.
Further, when the second embodiment is modified, the gas detection device control means C2 uses the power switch 2 (combustion start command acceptance means) of the combustion means 3 after a predetermined period has elapsed since the combustion means 3 stopped burning. When the start of combustion is commanded, and when the heating operation of the heating unit 5 is commanded by the heating operation command receiving unit 8, the heating operation control is executed.

  The present invention relates to a combustion apparatus configured such that a non-detection target gas attached to a gas detection means while not in use does not adversely affect detection of the detection target gas, and a gas detection attached to such a combustion apparatus. Available for equipment.

Schematic functional block diagram of the combustion device The figure explaining the structure of a gas detection means and a heating means Functional block diagram of combustion equipment

Explanation of symbols

1 Gas detector 2 Power switch (combustion start command receiving means)
DESCRIPTION OF SYMBOLS 3 Combustion means 4 Gas detection means 5 Heating means 8 Heating operation command reception means 10 Combustion apparatus 11 Housing | casing 12 Detection element 16 Filter part 19 Flow path 30 Combustion apparatus C Control means C1 Combustion apparatus control means C2 Control for gas detection equipment means

Claims (6)

Combustion means for burning fuel;
Combustion start command receiving means for receiving a combustion start command for the combustion means;
A casing, a detection element that is provided inside the casing and detects a detection target gas including a combustible gas derived from the fuel and an incomplete combustion gas generated by incomplete combustion of the fuel; and A gas detection means having a filter part provided in a flow path extending from the outside of the housing to the inside of the housing where the detection element is provided, to which a non-detection target gas adheres;
Heating means capable of heating the gas detection means;
The gas detection control for determining the presence state of the detection target gas based on the detection result of the detection element, and the combustion means when starting combustion according to the combustion start command received by the combustion start command reception means A combustion apparatus comprising: control means capable of executing heating operation control for heating the heating means for a set period. Combustion means for burning fuel;
Combustion start command receiving means for receiving a combustion start command for the combustion means;
A casing, a detection element that is provided inside the casing and detects a detection target gas including a combustible gas derived from the fuel and an incomplete combustion gas generated by incomplete combustion of the fuel; and A gas detection means having a filter part provided in a flow path extending from the outside of the housing to the inside of the housing where the detection element is provided, to which a non-detection target gas adheres;
Heating means capable of heating the gas detection means;
Gas detection control for determining the presence state of the detection target gas based on the detection result of the detection element, and the combustion start command receiving means after the combustion means has stopped after the combustion means stops the combustion by the combustion start command receiving means A combustion apparatus comprising: control means capable of executing heating operation control for heating the heating means for a set period when a start command is received.   The combustion apparatus according to claim 1 or 2, wherein the control means starts combustion of the combustion means after finishing the heating operation control. A heating operation command accepting means for accepting a command for heating operation before Symbol heating means,
Said control means, in said heating operation control, any one of claims 1 to 3 in which only the thermally setting period the heating means upon receiving a command for heating operation of said heating means in the heating operation command receiving means The combustion apparatus as described in .   The combustion apparatus according to any one of claims 1 to 4, wherein the heating means is a resistance heater attached to the housing. A gas detection device that can be attached to a combustion apparatus , comprising combustion means for burning fuel, control means for a combustion apparatus for controlling the operation of the combustion means, and combustion start command receiving means for receiving a combustion start command for the combustion means. And
A casing, a detection element that is provided inside the casing and detects a detection target gas including a combustible gas derived from the fuel and an incomplete combustion gas generated by incomplete combustion of the fuel; and A gas detection means having a filter part provided in a flow path extending from the outside of the housing to the inside of the housing where the detection element is provided, to which a non-detection target gas adheres;
Heating means capable of heating the gas detection means;
Gas detection control for determining the presence state of the detection target gas based on the detection result of the detection element, and control means for gas detection equipment capable of performing heating operation control for heating the heating means for a set period. Prepared,
A heating operation control in which the gas detector control means heats the heating means only for a set period when the combustion means starts combustion according to the combustion start command received by the combustion start command acceptance means as the heating operation control. Alternatively, it is possible to execute a heating operation control for heating the heating unit for a set period when the combustion start command receiving unit receives the combustion start command after a predetermined period or more has elapsed since the combustion unit stopped burning. Composed of
The gas detection device control means is configured to output a determination result of the presence state of the detection target gas to the combustion device control means after the heating operation control is completed.

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