JP2019032138A - Combustion system - Google Patents

Abstract

To provide a technology capable of appropriately stopping combustion by means of a combustion apparatus when an earthquake occurs while suppressing wrong detection of the earthquake obtained by a seismoscope.SOLUTION: A combustion system includes: an indoor apparatus installed at an indoor side; and a combustion apparatus installed at an outdoor side. The indoor apparatus includes a seismoscope for detecting occurrence of an earthquake, and is configured to transmit an occurrence signal indicating that the earthquake has occurred from the combustion apparatus when the seismoscope detects the occurrence of the earthquake. The combustion apparatus includes: a combustor for heating a heating target by burning fuel; a communication section capable of communicating with the indoor apparatus; and a control section. The control section is configured to stop the combustion by means of the combustor when the communication section receives the occurrence signal from the indoor apparatus in a state of combustion by means of the combustor.SELECTED DRAWING: Figure 1

Description

  The technology disclosed in this specification relates to a combustion system including an indoor device installed indoors and a combustion device installed outdoors.

  Combustion devices installed outdoors are known. For example, the combustion apparatus of Patent Document 1 includes a seismic device that detects the occurrence of an earthquake. The combustion device stops combustion when the seismic device detects the occurrence of an earthquake. In the combustion apparatus of patent document 1, the sensitivity of a seismoscope is changed according to the outdoor environment where the combustion apparatus is installed. For example, if the combustion device is installed in an environment that is susceptible to vibrations caused by factors other than earthquakes, such as crosswinds (for example, the combustion device is installed on a base that is anchored on an outdoor base surface) In the case of the combustion apparatus of Patent Document 1, the sensitivity of the seismic device is dulled. As a result, it is possible to avoid a situation in which combustion is unnecessarily stopped due to erroneous detection of vibration caused by a cross wind or the like as the occurrence of an earthquake.

JP 2005-98650 A

  If the sensitivity of the seismoscope is made dull, it is possible to suppress erroneous detection of vibrations caused by crosswinds or the like as an occurrence of an earthquake, but the detection sensitivity when an earthquake actually occurs is reduced. In this case, there is a possibility that an inappropriate situation in which the combustion is not stopped is caused in the situation where the combustion of the combustion apparatus should be stopped with the occurrence of the earthquake. A technology that can appropriately stop the combustion of the combustion apparatus when an earthquake occurs is expected while suppressing erroneous detection of the earthquake by the seismoscope.

  This specification provides the technology which can stop combustion of a combustion device appropriately at the time of the occurrence of an earthquake, suppressing the false detection of an earthquake by a seismic device.

  The combustion system disclosed in this specification includes an indoor device installed indoors and a combustion device installed outdoors. The indoor device includes a seismic device that detects the occurrence of an earthquake, and when the seismic device detects the occurrence of an earthquake, the indoor device is configured to transmit a generation signal indicating that the earthquake has occurred to the combustion device. . The combustion device includes a combustor that heats an object to be heated by combustion of fuel, a communication unit that can communicate with an indoor device, and a control unit. The control unit is configured to stop the combustion of the combustor when the communication unit receives a generation signal from the indoor device in a state where the combustor is burning.

  According to the above configuration, since the seismic device is installed indoors, the seismic device is affected by factors other than earthquakes, such as crosswinds, compared to when the seismic device is installed outdoors. It is hard to receive. Accordingly, it is possible to suppress erroneous detection of earthquakes by the seismoscope. Moreover, according to said structure, when a seismic device detects generation | occurrence | production of an earthquake, combustion of a combustor can be stopped. According to said structure, combustion of a combustion apparatus can be stopped appropriately at the time of the occurrence of an earthquake, suppressing the misdetection of the earthquake by a seismic device.

The block diagram of the combustion system which concerns on each Example is shown. The flowchart of the process which the stove which concerns on 1st Example performs is shown. The flowchart of the process which the water heater based on each Example performs is shown. The flowchart of the process which the stove which concerns on 2nd Example performs is shown.

  The main features of the embodiments described below are listed. The technical elements described below are independent technical elements and exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Absent.

(Feature 1) The indoor device may be a stove including a burner that heats the object to be cooked by burning fuel. The indoor device may be configured to stop the burning of the burner when the seismic device detects the occurrence of an earthquake in a situation where the burner is burning. A stove equipped with a burner has a high risk of spreading fire when an earthquake occurs. For this reason, safety can be secured by incorporating a seismic device in the stove and stopping the burner combustion when an earthquake occurs. According to said structure, the seismic device integrated in the indoor stove can be used together as a seismic device for stopping the combustion of an outdoor combustion apparatus.

(Feature 2) The indoor device is configured to stop the burning of the burner when the seismoscope detects the occurrence of an earthquake having a strength greater than or equal to the first strength when the burner is burning. May be. The indoor device may be configured to send a generated signal to the combustion device when the seismic device detects the occurrence of an earthquake having a second strength greater than the first strength. . According to this configuration, when an earthquake having a strength equal to or greater than the second strength occurs, combustion of the burner and the combustor stops. On the other hand, when an earthquake having a strength smaller than the second strength and greater than the first strength occurs, the burner combustion is stopped, but the combustor combustion is continued. In other words, the user can continue to use the combustion apparatus that is safer than the stove. User convenience is improved.

(First embodiment)
The combustion system 2 according to the first embodiment will be described with reference to the drawings. As shown in FIG. 1, the combustion system 2 includes a stove 10, a water heater 100, and a hot water remote controller 200. The stove 10 and the hot water remote controller 200 are installed inside the house 1 (that is, indoors). The water heater 100 and a gas meter 300 described later are installed outside the house 1 (that is, outdoors).

  Gas (that is, fuel) is supplied to the stove 10 and the water heater 100 from a gas supply source (for example, an LP (abbreviation for Liquefied Petroleum) gas container or city gas pipe) via a gas meter 300. In FIG. 1, the gas supply pipe is represented by a solid line, the wiring of each part in each device 10, 100, 200, 300 and the cable between the water heater 100 and the hot water remote controller 200 are represented by a broken line.

(Configuration of stove 10)
The stove 10 is a gas combustion type stove used in a kitchen. The stove 10 includes a microcomputer 12, a seismic device 14, a burner 16, an on-off valve 18, a supply circuit 30, a valve control circuit 32, and a wireless communication circuit 34. The microcomputer 12 controls the operation of each component of each circuit 30, 32, 34. The burner 16 heats the object to be cooked by gas combustion. The on-off valve 18 is an electrically driven valve that opens and closes the supply pipe 6 that supplies gas to the burner 16.

  The seismic sensor 14 detects the occurrence of an earthquake. Specifically, the seismic device 14 includes an acceleration sensor. The seismoscope 14 measures acceleration (vibration) caused by an earthquake with an acceleration sensor and outputs a signal having a voltage value corresponding to the magnitude of the acceleration. In the modification, the seismic device 14 may include a magnet type or steel ball type sensor that operates in response to vibration caused by an earthquake having a predetermined seismic intensity or higher. In other words, the seismic device 14 operates when an earthquake with a predetermined seismic intensity or more occurs and outputs a predetermined signal, and does not operate when an earthquake with a seismic intensity lower than the predetermined seismic intensity occurs. May not be output.

  The supply circuit 30 supplies the signal output from the seismic sensor 14 to the microcomputer 12. The valve control circuit 32 controls the opening / closing of the on-off valve 18. The wireless communication circuit 34 performs wireless communication with the hot water supply remote controller 200 in accordance with a predetermined wireless communication method (for example, wireless LAN method, Bluetooth (registered trademark) method, infrared communication method).

(Configuration of water heater 100)
The water heater 100 generates hot water and supplies it to the house 1. The water heater 100 includes a microcomputer 112, a combustor 116, an on-off valve 118, a valve control circuit 132, and a wired communication circuit 136. The microcomputer 112 controls the operation of each component of the circuits 132 and 136. The combustor 116 heats water to be heated by gas combustion. The on-off valve 118 is an electrically driven valve that opens and closes the supply pipe 8 that supplies gas to the combustor 116.

  The valve control circuit 132 controls opening / closing of the on-off valve 118. The wired communication circuit 136 performs wired communication with the hot water supply remote controller 200. The wired communication circuit 136 is connected to the communication cable 4. In the modification, the water heater 100 may include a wireless communication circuit instead of the wired communication circuit 136. The water heater 100 may perform wireless communication with the hot water remote controller 200.

(Configuration of hot water remote controller 200)
The hot water supply remote controller 200 is a controller for operating the water heater 100 from inside. The hot water remote controller 200 includes a microcomputer 212, a wireless communication circuit 234, and a wired communication circuit 236. The microcomputer 112 controls the operation of each component of each circuit 234, 236. The wireless communication circuit 234 performs wireless communication with the wireless communication circuit 34 of the stove 10. The wired communication circuit 236 performs wired communication with the wired communication circuit 136 of the water heater 100. The wired communication circuit 236 is connected to the communication cable 4.

  The operation of the hot water remote controller 200 will be described. When the wireless communication circuit 234 receives a signal from the wireless communication circuit 34 of the stove 10, the microcomputer 112 supplies the received signal to the wired communication circuit 236. Thereby, the wired communication circuit 236 transmits the received signal to the wired communication circuit 136 of the water heater 100 via the communication cable 4. That is, the wired communication circuit 136 of the water heater 100 can communicate with the stove 10 via the hot water remote controller 200.

(Configuration of gas meter 300)
The gas meter 300 measures the amount of gas used in the water heater 100 and the stove 10. The gas meter 300 includes a microcomputer 312, a seismic sensor 314, an on-off valve 318, a supply circuit 330, and a valve control circuit 332. The microcomputer 312 controls the operation of each component of the circuits 330 and 332. The seismic sensor 314 outputs a predetermined signal when an earthquake having a seismic intensity equal to or higher than a preset seismic intensity (hereinafter, set seismic intensity) occurs. The on-off valve 318 is an electrically driven valve that opens and closes the supply pipe 9 that connects the gas supply source and the supply pipes 6 and 8. The supply circuit 330 supplies the signal output from the seismic sensor 314 to the microcomputer 312. The valve control circuit 332 controls opening / closing of the on-off valve 318.

  The operation of the gas meter 300 when an earthquake occurs will be described. The microcomputer 312 acquires a predetermined signal from the seismic sensor 314 via the supply circuit 330 when an earthquake having a set seismic intensity or more occurs. When the microcomputer 312 acquires a predetermined signal from the supply circuit 330, the microcomputer 312 supplies a closing signal for closing the on-off valve 318 to the valve control circuit 332. As a result, the valve control circuit 332 closes the on-off valve 318. That is, the gas meter 300 has a function of shutting off the gas supply from the gas supply source to the water heater 100 and the stove 10 when an earthquake having a predetermined seismic intensity or more occurs.

(Cooking process; Fig. 2)
A process executed by the microcomputer 12 of the stove 10 will be described with reference to FIG. The process of FIG. 2 is started when power is supplied to the microcomputer 12.

  In S <b> 10, the microcomputer 12 monitors whether the seismic device 14 acquires a signal from the seismic device 14 due to the occurrence of the earthquake. When acquiring a signal from the seismic device 14, the microcomputer 12 determines YES in S10, and proceeds to S12.

  In S12, the microcomputer 12 calculates the seismic intensity from the voltage value indicated by the signal acquired from the seismic sensor 14, and determines whether the calculated seismic intensity is equal to or higher than the first seismic intensity. If the calculated seismic intensity is greater than or equal to the first seismic intensity (YES in S12), the microcomputer 12 proceeds to S14. On the other hand, when the calculated seismic intensity is smaller than the first seismic intensity (NO in S12), the microcomputer 12 skips the processes after S14 and returns to S10. Here, the first seismic intensity is set to a value smaller than the set seismic intensity of the gas meter 300. Since the burner 16 is exposed in the stove 10, there is a high risk of fire spread when an earthquake occurs. For this reason, safety can be ensured by incorporating the seismic device 14 in the stove 10 and stopping the combustion of the burner 16 in S14 described later.

  In S <b> 14, the microcomputer 12 supplies a closing signal for closing the on-off valve 18 to the valve control circuit 32. Thereby, the valve control circuit 32 closes the on-off valve 18. By closing the on-off valve 18, the supply of gas to the burner 16 is shut off. In the situation where the burner 16 is burning, the combustion of the burner 16 is stopped.

  In S <b> 16, the microcomputer 12 supplies a generation signal indicating that an earthquake has occurred to the wireless communication circuit 34. Thereby, wireless communication circuit 34 transmits the generated signal to wireless communication circuit 234 of hot water supply remote controller 200 in accordance with a predetermined wireless communication method. When receiving the generated signal from the stove 10, the hot water remote controller 200 transmits the generated signal to the water heater 100 via the communication cable 4. When S16 ends, the process returns to S10.

(Water heater processing; Fig. 3)
With reference to FIG. 3, the process which the microcomputer 112 of the water heater 100 performs is demonstrated. The process in FIG. 3 is started when power is supplied to the microcomputer 112.

  In step S <b> 30, the microcomputer 112 monitors whether the wired communication circuit 136 receives a generation signal from the hot water supply remote controller 200. When the wired communication circuit 136 receives the generated signal from the hot water remote controller 200, the microcomputer 112 determines YES in S30, and proceeds to S32.

  In S <b> 32, the microcomputer 112 supplies a closing signal for closing the on-off valve 118 to the valve control circuit 132. As a result, the valve control circuit 132 closes the on-off valve 118. By closing the on-off valve 118, the supply of gas to the combustor 116 is shut off. That is, in the situation where the combustor 116 is burning, if the seismic intensity equal to or higher than the first seismic intensity is generated, the combustion of the combustor 116 is stopped. When S32 ends, the process returns to S30.

  The combustion system 2 according to the first embodiment has been described above. As is clear from the above description, since the seismic device 14 of the stove 10 is installed indoors, the seismic device is installed outdoors (for example, when the water heater 100 includes a seismic device). In comparison with the above, the seismic device 14 is less susceptible to factors other than earthquakes, such as crosswinds. Accordingly, it is possible to suppress erroneous detection of earthquakes by the seismoscope.

  Further, according to the configuration of the first embodiment, when an earthquake occurs, the water heater 100 receives a generation signal from the stove 10 installed indoors (YES in S30 of FIG. 3), and the combustor The combustion of 116 can be stopped. That is, according to the configuration of the first embodiment, it is possible to appropriately stop the combustion of the water heater 100 when an earthquake occurs while suppressing erroneous detection of the earthquake by the seismic device.

  According to the configuration of the first embodiment, the stove 10 stops the combustion of the burner 16 when the seismic device 14 incorporated in the stove 10 detects the occurrence of an earthquake (YES in S10 in FIG. 2). At the same time, the generation signal is transmitted to the water heater 100 (S16). That is, according to the configuration of the first embodiment, the seismic device 14 incorporated in the indoor stove 10 can be used in combination as a seismic device for stopping the combustion of the outdoor water heater 100.

(Correspondence)
The stove 10 and the water heater 100 are examples of an “indoor device” and a “combustion device”, respectively. The wired communication circuit 136 and the microcomputer 112 are examples of “communication unit” and “control unit”, respectively.

(Second embodiment)
A combustion system 2 according to a second embodiment will be described. The combustion system 2 is the same as that of the first embodiment except that the processing of the stove 10 is partially different.

(Cooking process; Fig. 4)
With reference to FIG. 4, the process which the microcomputer 12 of the stove 10 performs in 2nd Example is demonstrated. The process of FIG. 4 is the same as the process of FIG. 2 according to the first embodiment except that the process of S18 is executed after S14.

  When the microcomputer 12 supplies the close signal to the valve control circuit 32 in S14, the microcomputer 12 determines whether or not the seismic intensity calculated in S12 is equal to or greater than the second seismic intensity in S18. Here, the second seismic intensity is set to a value larger than the first seismic intensity and smaller than the set seismic intensity of the gas meter 300. If the microcomputer 12 determines that the seismic intensity is greater than or equal to the second seismic intensity (YES in S18), the microcomputer 12 proceeds to S16. On the other hand, when the microcomputer 12 determines that the seismic intensity is smaller than the second seismic intensity (NO in S18), the microcomputer 12 skips S16 and returns to S10. That is, the generated signal is not transmitted to the water heater 100.

  The combustion system 2 according to the second embodiment has been described above. As apparent from the above description, when the seismic device 14 detects the occurrence of an earthquake having a seismic intensity greater than or equal to the second seismic intensity (YES in S18), the water heater 100 is connected to the stove 10 via the hot water remote controller 200. Is generated (YES in S30), and combustion of the combustor 116 is stopped. That is, when an earthquake having a seismic intensity equal to or greater than the second seismic intensity occurs, combustion of the stove 10 and the water heater 100 is stopped. On the other hand, when an earthquake having a seismic intensity smaller than the second seismic intensity and greater than or equal to the first seismic intensity occurs (NO in S18), the water heater 100 does not receive the generation signal and continues the combustion of the combustor 116. That is, the user can continue to use the hot water heater 100 that is safer than the stove 10. User convenience is improved.

(Correspondence)
The first seismic intensity and the second seismic intensity are examples of “first strength” and “second strength”, respectively.

  Each embodiment has been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. Modifications of the above embodiments are listed below.

(Modification 1) The “indoor device” is not limited to the stove, but may be other gas equipment installed indoors, for example, a gas heater. In addition, the “indoor device” may be another device that is installed indoors and does not use gas, such as a floor heater, an air conditioner, and an oil fan heater.

(Modification 2) The “combustion device” is not limited to a water heater, and may be a heater for heating a medium (for example, water) for heating an indoor space. Further, the “combustion device” may be a hot water heater that has both the function of a water heater and the function of a heater.

(Modification 3) The combustion system 2 may not include the hot water supply remote controller 200. In this case, the water heater 100 may receive the generated signal directly from the stove 10 without going through another device. Generally speaking, the “combustion system” may include an indoor device and a combustion device.

(Modification 4) According to each of the above embodiments, the stove 10 includes the seismic device 14. Instead of this, the stove 10 may not include a seismic device, and the hot water remote controller 200 may include a seismic device. In this modification, the hot water remote controller 200 is an example of an “indoor device”.

(Modification 5) According to each of the above embodiments, the microcomputer 12 executes the process of S12 of FIG. 2 using the seismic intensity as a unit indicating the intensity of the earthquake. Instead of this, the microcomputer 12 may execute the process of S12 using units other than seismic intensity, for example, magnitude or gull. According to this modification, “strength” is expressed by magnitude and gull.

(Modification 6) According to the second embodiment, the stove 10 executes the process of S18 of FIG. Instead, the stove 10 wirelessly communicates a generated signal including seismic intensity information indicating the seismic intensity calculated in S12 (that is, the seismic intensity detected by the seismic sensor 14) after S14 without executing S18. It may be supplied to the circuit 34. Then, when the water heater 100 determines YES in S30 of FIG. 3 and determines that the seismic intensity indicated by the seismic intensity information included in the generated signal is greater than or equal to the second seismic intensity, executes the process of S32. May be. In the present modification, the generated signal including seismic intensity information indicating the seismic intensity equal to or greater than the second seismic intensity is an example of the “generated signal”.

  The technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology exemplified in this specification or the drawings can achieve a plurality of objects at the same time, and has technical usefulness by achieving one of the objects.

1: Housing 2: Combustion system 4: Cable 6, 8, 9: Supply pipe 10: Stove 12: Microcomputer 14: Shock absorber 16: Burner 18: On-off valve 30: Supply circuit 32: Valve control circuit 34: Wireless communication circuit 100: Hot water heater 112: Microcomputer 116: Combustor 118: Open / close valve 132: Valve control circuit 136: Wired communication circuit 200: Hot water remote controller 212: Microcomputer 234: Wireless communication circuit 236: Wired communication circuit 300: Gas meter 312: Microcomputer 314: Sensor 318: Open / close valve 330: Supply circuit 332: Valve control circuit

Claims (3)

A combustion system comprising an indoor device installed indoors and a combustion device installed outdoors,
The indoor device includes a seismic device for detecting the occurrence of an earthquake, and configured to transmit a generation signal indicating that an earthquake has occurred to the combustion device when the seismic device detects the occurrence of an earthquake. Has been
The combustion device comprises:
A combustor for heating an object to be heated by combustion of fuel;
A communication unit capable of communicating with the indoor device;
A control unit;
With
The controller is
A combustion system configured to stop combustion of the combustor when the communicator receives the generated signal from the indoor device in a situation where the combustor is burning. The indoor device is a stove including a burner that heats a cooking object by burning fuel;
The combustion of claim 1, wherein the indoor device is configured to stop burning of the burner when the seismic device detects the occurrence of an earthquake in a situation where the burner is burning. system. The indoor device is configured to stop burning of the burner when the occurrence of an earthquake having a strength greater than or equal to a first strength is detected in the situation where the burner is burning. Has been
The indoor device is configured to transmit the generated signal to the combustion device when the seismic device detects the occurrence of an earthquake having a second strength greater than the first strength. The combustion system according to claim 2.

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