JP4124080B2 - Combustion device - Google Patents

Description

  The present invention relates to a combustion apparatus equipped with a seismic device, and more particularly to a technique that allows the detection sensitivity of a seismic device to be changed according to the installation situation.

  2. Description of the Related Art Conventionally, it is known that a combustor is provided with a seismic device so that combustion of a burner is forcibly stopped when vibration (vibration) caused by an earthquake is detected (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 11-182845

  However, in the above-described conventional combustion apparatus, depending on the installation situation, a vibration other than earthquake motion such as wind is detected, and the output of the vibration detection signal thereby stops the combustion even if it is not the vibration that should originally stop the combustion. There is an inconvenience that it causes them to become unusable.

That is, in the case of a connected type in which two or more combustion apparatuses are connected in parallel, these two or more combustion apparatuses are usually fixedly installed on a gantry 6 as shown in FIGS. 4 and 5, for example. Will be. The gantry 6 has a base end fixed to the base surface (floor surface or foundation surface) and a tip protruding into the upper space to become a free end. Signal may be output). Such inconvenience is that even if the combustion device is installed alone, if the rigidity of the installed wall or the like is low, the wall will be shaken for some reason, and the seismoscope will be shaken. May cause inconveniences similar to those described above. In addition, such inconvenience is caused by the presence of a seismic device for detecting combustion regardless of whether the combustion device burns gas fuel (gas) or liquid fuel (petroleum, etc.). It can occur in the same way if it is configured to stop.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a combustion apparatus that can change the sensitivity of the seismic device operation according to the situation of the installation location (installation situation) and the like. There is to do.

In order to achieve the above object, in the first or second aspect of the invention, a seismic device that operates upon generation of vibration and outputs a vibration detection signal, an output duration of the vibration detection signal output from the seismic device, and And / or safety determination processing means for determining whether or not to output a safe operation signal based on the determination criterion in response to a vibration detection signal output from the seismoscope, in which a determination criterion for the number of outputs is preset. The above-described combustion apparatus is used as a premise that it includes external operation means that is connected to the safety determination processing means and changes and sets the determination criteria by external operation (claims 1 and 2 ).

In the case of this premise configuration , when the installation target of the combustion apparatus is in an installation situation that is easily affected by passive vibration other than an earthquake, the occurrence of an earthquake, etc. ( The safety operation signal can be changed so as to be output only when it is necessary to perform a truly safe operation (for example, forced stop of combustion). In other words, it is possible to change the sensitivity setting by sharpening the degree of sensitivity (sensitivity) whether or not to output a safe operation signal based on the operation of the seismoscope, or conversely by changing the judgment criteria. become. As a result, when the safe operation signal is output based on the standard criteria set in advance, the seismic device is activated under the influence of crosswinds and fine vibrations other than the occurrence of an earthquake, resulting in the output of a safe operation signal. Thus, it is possible to avoid the occurrence of a situation in which the combustion apparatus becomes unusable due to a forced stop of combustion or the like. Alternatively, if the installation target is strong and the user wants to perform a safe operation even with a slight shake, the determination criterion is set to a smaller value using the external operation means. It is also possible to satisfy the user's request by changing the setting. Note that the above “installed object” refers to the wall or frame of the object where the combustion device is installed, and “the installed object is susceptible to the effects of passive vibration other than earthquakes” When the device is installed and fixed on a wall, etc., the wall of the installation location is low in rigidity, or when two or more combustion devices are installed in parallel on a frame, etc. It is in the installation situation such as being easy to roll (hereinafter the same).

The above as the external operating means in premise construction, Ru can constitute the criterion stepwise or continuously variable on a larger value side. As a result, depending on the level of the installation status of the installation target that is susceptible to passive vibration other than the above-mentioned earthquake, the judgment criteria are changed to a larger value side, such as one stage and two stages, and the actual installation It becomes possible to adapt more to the situation.

As the external operating means in premise configuration of the remote control, Ru can be constituted by one or more combinations of the selector switch and switching the connection terminal. Thereby, an external operation means can be specified more specifically. In other words, in the case of a remote control, for example, it is possible to change and set a determination criterion by an input setting operation from the remote control. In the case of a connection terminal for switching, the installation status, etc. from among a plurality of terminals on the male and female sides, in which determination criteria for each of a plurality of stages from the small value side to the large value side are preset. By connecting the terminals on the other side of the male and female to the terminals selected according to the above, it becomes possible to set the desired switching of the determination criteria.

And in the said 1st invention , in addition to said premise structure, the alerting means and the 1st integration process means which accumulates and memorize | stores the output frequency of the vibration detection signal output from the said seismic device within the range of a setting period. And notification processing means for performing notification processing to the effect that the determination criterion can be changed and set by the notification means when the number of integrated outputs within the set period by the first integration processing means exceeds the set number of times. and thus (claim 1). In this case, when the cumulative number of outputs within the set period exceeds the set number, it is determined that the combustion device is installed in a relatively weak installation target where the seismoscope operates frequently, and the above notification is made. By the processing, the user is notified by the notification means. By this notification, the user himself / herself or a serviceman who has been contacted by the user operates the external operation means to change and set the determination criterion, whereby the sensitivity setting suitable for the installation situation can be changed.

In addition, in the second invention, in addition to the above-mentioned premise configuration, a reporting unit and a second integration processing unit for accumulating and storing the number of outputs of the safe operation signal output from the safety determination processing unit within a set period And notification processing means for performing notification processing to the effect that the determination criterion can be changed and set by the notification means when the number of times of cumulative output within the set period by the second integration processing means exceeds the set number of times. and thus (claim 2). In this case, notification by the notification means is performed based on the number of outputs of the safe operation signal, as in the case of claim 1 , and the service person who has been contacted by the user himself or herself by this notification uses the external operation means. By operating and changing and setting the determination criterion, the sensitivity setting can be changed to suit the installation situation.

In the third aspect of the invention, a seismic device that operates when vibration is generated and outputs a vibration detection signal, and a determination criterion for the output duration and / or the number of times of output of the vibration detection signal output from the seismic device are set in advance. In response to a vibration detection signal output from the seismic device, a safety determination processing means for determining whether or not to output a safe operation signal based on the determination criterion, the following specific matters are targeted: I decided to prepare. That is, when it is detected that the installation situation detection means detects whether or not the installation situation is likely to be subject to passive vibration caused by other than an earthquake, and the installation situation detection means is susceptible to the passive vibration. It is provided with a reference change setting means for changing the determination reference to a larger value stepwise or continuously (Claim 3 ).

In the case of the third invention, the sensitivity setting change can be realized by automatic processing, not the sensitivity setting change based on the manual operation in the first or second invention. That is, when it is detected by the installation status detection means that the installation status is susceptible to passive vibration, the criterion is automatically changed and set to a larger value by the reference change setting means in response to the detection. It will be. As a result, as in the case of the first or second invention, the sensitivity setting based on the seismic device operation is changed more dullly according to the installation situation, and the output of the safe operation signal is performed based on the preset standard judgment criterion. As a result of the seismic device operating under the influence of crosswinds other than the occurrence of an earthquake, a safe operation signal is output and the combustion device cannot be used due to a forced stop of combustion, etc. It will be.

As the installation status detection means in the third invention, it is possible to detect whether the installation status is a single installation status or a connection type installation status in which two or more units are connected. It can be set as the structure which detects that it is the installation condition which is easy to receive (Claim 4 ). When the combustion apparatus is in a single installation state, it is usually installed on a highly rigid wall or the like, while two or more combustion apparatuses are connected in parallel to form one combustion apparatus as a whole. When installed, it is usually installed on a stand that is easily affected by passive vibration (rolling), so a configuration that detects that it is susceptible to passive vibration is adopted in a connected installation situation. As a result, it is possible to provide a means for executing the change setting of the criterion according to the actual installation state by automatic processing. In this case, the installation status detection means may be configured to detect that it is a connected installation status based on a connection signal by connection of a communication connection line (Claim 5 ). Thereby, the detection that it is a connection type installation situation can be detected simply and accurately.

In the fourth aspect of the invention, a seismic device that operates upon generation of vibration and outputs a vibration detection signal, and a determination criterion for the output duration and / or the number of times of output of the vibration detection signal output from the seismic device are set in advance. In response to a vibration detection signal output from the seismic device, a safety determination processing means for determining whether or not to output a safe operation signal based on the determination criterion, the following specific matters are targeted: I decided to prepare. That is, a first integration processing unit that accumulates and stores the number of outputs of the vibration detection signal output from the seismic device within a set period, and the integrated output count within the set period by the first integration processing unit There was decided and a reference change setting means for changing set stepwise or continuously the criteria on a larger value side when more than predetermined number of times (claim 6).

In the case of the fourth invention, the sensitivity setting can be changed by automatic processing by means different from the third invention. That is, when the accumulated output count within the set period exceeds the set count, the combustion device is installed in a relatively weak installation target where the seismoscope operates frequently, not due to the occurrence of the original earthquake. Therefore, the reference change setting means automatically receives the output indicating that the number of accumulated outputs within the set period exceeds the set number from the first accumulation processing means, and the decision reference is automatically set to the larger value side. It will be changed. In other words, the installation status can be grasped according to the number of times of output of the vibration detection signal within the setting period, and the sensitivity setting change can be realized by automatic processing based on the grasped result. As a result, as in the case of the first invention, the sensitivity setting based on the operation of the seismic device is changed more dullly according to the installation situation, and the output of the safe operation signal is executed based on the preset standard criterion. As a result of the seismic device operating under the influence of crosswinds and fine vibrations other than the occurrence of an earthquake, a safety operation signal is output and the combustion device becomes unusable due to a forced stop of combustion, etc. It can be avoided.

In the fourth aspect of the invention, when the cumulative number of outputs within the set period by the notification means and the first integration processing means exceeds the set number of times, the notification means that the determination criterion is changed and set by the notification means is performed. You may make it further provide an alerting | reporting process means (Claim 7 ). In this case, the notification by the notification means allows the user to grasp the operation setting status against the earthquake of the combustion device currently in use, and can continue to use the combustion device after grasping it.

In the fifth aspect of the present invention, a seismic device that operates upon generation of vibration and outputs a vibration detection signal, and a determination criterion for the output duration and / or the number of times of output of the vibration detection signal output from the seismic device are set in advance. In response to a vibration detection signal output from the seismic device, a safety determination processing means for determining whether or not to output a safe operation signal based on the determination criterion, the following specific matters are targeted: I decided to prepare. That is, a second integration processing unit that accumulates and stores the number of outputs of the safe operation signal output from the safety determination processing unit within a set period, and an integrated output within the set period by the second integration processing unit number was decided and a reference change setting means for setting stepwise or continuously changes the criterion when exceeds the set number of times on a larger value side (claim 8).

In the case of the fifth invention, the sensitivity setting can be changed by automatic processing by means different from the third invention or the fourth invention. That is, when the accumulated output count within the set period exceeds the set count, the combustion device is installed in a relatively weak installation target where the seismoscope operates frequently, not due to the occurrence of the original earthquake. Therefore, the reference change setting means automatically receives the output indicating that the accumulated output number within the set period exceeds the set number from the second accumulation processing means, and the decision reference is automatically set to the larger value side. It will be changed. In other words, if the installation status is grasped by how many times the safe operation signal is output within the set period, in other words, if the frequency at which the safe operation signal is output is high enough to prevent the occurrence of an earthquake, or If the safety operation signal is output so frequently that it cannot be the occurrence of an original earthquake, the installation status is likely to cause a seismic device operation due to factors other than the original earthquake, and as a result, the above-mentioned safe operation signal is output. Therefore, the sensitivity setting can be changed by automatic processing based on such a determination method. And by the change setting by such automatic processing, the sensitivity setting based on the seismic device operation is changed more dullly according to the installation situation as in the case of the first or second invention, and the preset standard determination When the safety operation signal is output based on the standard, the seismic device is activated under the influence of crosswinds other than the occurrence of an earthquake, and as a result, the safety operation signal is output and the combustion device is used for forced combustion stop etc. Occurrence of a situation that would make it impossible is avoided.

In the fifth aspect of the invention, when the number of times of cumulative output within the set period by the notification means and the second integration processing means exceeds the set number of times, the notification means that the determination criterion is changed and set by the notification means is performed. You may make it further provide an alerting | reporting process means (Claim 9 ). In this case, the notification by the notification means allows the user to grasp the operation setting status against the earthquake of the combustion device currently in use, and can continue to use the combustion device after grasping it.

In any one of the third to fifth inventions described above, the apparatus further comprises external operation means connected to the safety determination processing means and configured to change and set the determination criteria by external operation, and change of the determination criteria by the external operation means. setting, it is possible to add the configuration that overrides change settings criterion by the reference change setting means (claim 10). In this case, even if the determination criteria change setting by the automatic processing is executed, or even if the execution condition for the determination criteria change setting by the automatic processing is satisfied, the determination criteria change setting by the operation of the external operation means is established. When the change is made, the change setting by the automatic processing is canceled, and the change operation of the user or the like using the external operation means is prioritized and changed to the determination criterion based on the change operation. For this reason, even if the determination criterion is changed and set to a larger value than the standard by automatic processing, it is returned to the original determination criterion by operation of the external operation means, that is, the change setting by automatic processing is canceled, Alternatively, it is possible to realize that the change setting to the large value side by the automatic processing is further increased and set to the large value side based on the change intention of the user or the like.

As the combustion apparatus in the above first to fifth invention of any one of, it may be assumed to have a hot water supply function for tapping after the incoming water is heated by combustion heat, heating (claim 11) . That is, the present invention can be suitably applied to a combustion apparatus that is configured as a so-called hot water heater that includes a combustor (combustion burner) and heats incoming water with the combustion heat of the combustor to discharge hot water.

As described above, according to the combustion apparatus of claim 1 or 2 , when the installation target of the combustion apparatus is in an installation state that is easily affected by passive vibration other than an earthquake, a seismic device is activated. The criterion for determining whether or not to output a safe operation signal based on the above can be changed and set by the external operation means. In other words, it is possible to change the sensitivity setting as to whether or not to output a safe operation signal based on the seismic device operation by changing the determination criterion. As a result, it can be changed so that a safe operation signal is output only when there is a need for a truly safe operation such as the occurrence of an earthquake, while it is based on the influence of crosswinds and fine vibrations other than the actual occurrence of an earthquake. Occurrence of a situation where the combustion apparatus becomes unusable can be avoided.

In particular , according to the first aspect of the present invention, the combustion apparatus is installed in a relatively weak installation target in which the seismic device is frequently operated depending on the number of times the vibration detection signal is output from the seismic device. The situation can be automatically grasped, and the grasping result can be notified to the user or the like by the notifying means. By this notification, it is possible to prompt the user or the like to change the determination criterion by operating the external operation means, and to change the sensitivity setting to suit the installation situation.

Further , according to claim 2 , the combustion apparatus is installed in a relatively weak installation target in which the seismic device frequently operates depending on the number of times of safe operation signal integration output from the safety judgment processing means. Thus, it is possible to automatically grasp the state of installation, and to notify the user or the like of the grasped result by the notifying means. By this notification, it is possible to prompt the user or the like to change the determination criterion by operating the external operation means, and to change the sensitivity setting to suit the installation situation.

According to one of the combustion apparatus of claims 3 to 5, can be implemented by an automatic processor to change the sensitivity setting for earthquake detector operation. That is, if it is detected by the installation status detection means that the installation status is susceptible to passive vibration, the criterion can be automatically changed and set to the larger value side by the reference change setting means. As a result, the sensitivity setting based on the operation of the seismic device can be changed more slowly depending on the installation situation, and even if the seismic device malfunctions due to the influence of crosswinds and fine vibrations other than the occurrence of an earthquake, Occurrence of a situation in which the operation signal becomes difficult to be output and the combustion apparatus becomes unusable can be avoided.

In particular, according to claim 4 , whether or not the installation situation is susceptible to passive vibration can be accurately determined by detecting whether it is a single installation situation or a connected installation situation where two or more units are connected. Can be detected. Further, according to the fifth aspect , it is possible to easily and accurately detect the above-described connection type installation state based on a connection signal by connection of a communication connection line.

According to the combustion apparatus of claim 6 or claim 7 , it is possible to accurately grasp the installation status of the combustion apparatus depending on the number of times of output of the vibration detection signal of the seismic device within the set period. By adopting a simple grasping method, it is possible to realize the change setting to the judgment standard adapted to the installation situation by automatic processing. And as a result of such a change setting by automatic processing, the sensitivity setting based on the operation of the seismic device is changed more slowly depending on the installation situation, so it is affected by crosswinds and fine vibrations other than the occurrence of earthquakes. Even if the seismic device is erroneously activated due to this, it is possible to suppress the output of the safe operation signal. As a result, it is possible to avoid the occurrence of a situation where the combustion apparatus becomes unusable due to factors other than the occurrence of the original earthquake. In particular, according to the seventh aspect , it is possible to allow the user to grasp the operation setting status against the earthquake of the combustion apparatus currently in use by the notification by the notification means, and to continue using the combustion apparatus after grasping it. it can.

According to the combustion device of claim 8 or claim 9 , it is possible to accurately grasp the installation status of the combustion device by the output frequency of the safe operation signal, and adapting to the installation status by adopting such a grasping method. The change setting to the determined criterion can be realized by automatic processing. And as a result of such a change setting by automatic processing, the sensitivity setting based on the operation of the seismic device is changed more slowly depending on the installation situation, so it is affected by crosswinds and fine vibrations other than the occurrence of earthquakes. Therefore, it is possible to avoid the occurrence of a situation in which the safe operation signal is erroneously output and the combustion apparatus becomes unusable. In particular, according to the ninth aspect , it is possible to allow the user to grasp the operation setting status against the earthquake of the combustion apparatus currently in use by the notification by the notification means, and to continue using the combustion apparatus after grasping it. it can.

According to the combustion apparatus of claim 10, in the combustion apparatus in which the change setting of the determination criterion is realized by automatic processing, even if the change setting of the determination criterion by the automatic processing is executed, the change setting is externally operated. It can be canceled by operating the means to return to the original determination standard, or the change setting to the large value side by the automatic processing can be further increased to the large value side for change setting. Thereby, in addition to the convenience based on the change setting by automatic processing for the sensitivity setting for the seismic device operation, the change setting based on the change intention of the user or the like can be prioritized to provide an easy-to-use combustion apparatus.

Further, according to claim 11 , by configuring the combustion device of each of the above claims to have a hot water supply function, it is possible to provide a suitable hot water heater for general household use or business use. .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The combustion apparatus of the present invention is suitably implemented in the form of a water heater that includes a combustion burner and heats incoming water with the combustion heat of the combustion burner to discharge the hot water. The water heater, gas water heaters and for burning gaseous fuel, there is an oil water heater Ru by burning liquid fuel (eg kerosene), both may be implemented as a combustion apparatus of the present invention. FIG. 1 shows an oil water heater as an example. This oil water heater 2 burns fuel oil (for example, kerosene), heats the incoming water from the inlet 220, and discharges the heated hot water to the outlet 230, and has such a function. If so, another type that does not use the heat exchanger 21 described later can be used. Details of the oil water heater 2 will be described below based on the example shown in FIG.

  The oil water heater 2 includes a heat exchanger 21 disposed in the combustion can body 20, a water inlet pipe 22 for allowing water from a water supply path (not shown) to enter the heat exchanger 21 through a water inlet 220, and the heat The hot water heated by the exchanger 21 is discharged to the hot water outlet 230, the hot water discharged from the heat exchanger 21, the bypass tube 24 for mixing the hot water, and the heat exchanger 21 is burned. A combustion burner 25 that is heated by heat, and a fuel supply pipe 27 that supplies fuel oil (kerosene) from a fuel tank 26 to the combustion burner 25 via a fuel connection port 270 are provided.

  The inlet pipe 22 is provided with an incoming water temperature sensor 221 and an incoming water flow rate sensor 222, while the hot water outlet pipe 23 is heated by the combustion can body 20 at a position upstream of the joining position with the downstream end of the bypass pipe 24. A hot water temperature sensor 231 and a water amount servo valve 232 for detecting the hot water temperature after the hot water are provided, and a hot water temperature sensor 233 is provided at a position downstream of the merging position. The bypass pipe 24 is provided with a hot water mixing valve 241 for mixing the hot water from the hot water outlet pipe 23 with water from the incoming water pipe 22 at a predetermined mixing ratio. The water amount servo valve 232 has a normal function capable of adjusting the opening degree within a predetermined valve opening amount range and a fully closed function capable of closing to a fully closed state where the valve opening amount is zero based on a command from the controller 29 described later. is doing. As a result, when a plurality of oil water heaters are connected and used as a connected type, the use / non-use switching by the number control is set to the operation state of the normal function of the water volume servo valve 232 or the fully closed function. Depending on whether or not it is in a fully closed switching state, it is not necessary to provide an external separate solenoid on-off valve. Further, the hot water / water mixing valve 241 also has a fully-closed function that makes the amount of water flow from the inlet pipe 22 side zero.

  The combustion burner 25 is disposed so as to inject the flame downward, and is constituted by, for example, a gun type burner having a return type spray nozzle. The combustion burner 25 sprays and burns kerosene supplied by a fuel supply pipe 27 in which an electromagnetic on-off valve 251 and an electromagnetic supply pump 252 are interposed, and a part of the supplied kerosene passes through a return pipe 253 and the electromagnetic It returns to the fuel supply pipe 27 between the on-off valve 251 and the electromagnetic supply pump 252. The return pipe 253 is provided with an oil temperature detection sensor 254 for detecting the oil temperature of the return oil, a flow rate control valve 255 for proportionally controlling the flow rate of the return oil, and a check valve for flowing the return oil only to the return side. Has been. Then, by changing and adjusting the flow rate of the return oil by the flow rate control valve 255 according to the number of tapping hot water, the change of the spray amount from the combustion burner 25 is performed, so that the combustion amount is proportionally controlled. It has become. The combustion system is constituted by the combustion burner 25, the electromagnetic on-off valve 251, the electromagnetic supply pump 252, and the like, and the operation of the combustion system is controlled by a controller 29 described later.

  The oil water heater 2 is provided with a seismic device 28 at a predetermined position (for example, the position of the inner wall of the casing of the oil water heater 2). A vibration detection signal is output to 29. When it is determined that a safety process is necessary based on the output of the vibration detection signal, a safe operation signal described later is output, and the controller 29 stops the operation of the combustion system 29 by the output of the safe operation signal. The combustion of the combustion burner 25 is forcibly stopped.

  As shown in FIG. 1, an example of the above-described seismic device 28 is held at a lower position by its own weight when the ball 281 is vibrated and jumps upward or moves sideways. When the plunger 282 receives an elastic restoring force from the movable piece 283 that functions as a switch, the plunger 282 jumps upward, and in conjunction with the plunger 282, the movable piece 283 swings around the fulcrum 284 to turn off the contact 285, An operation signal is output. In other words, the energized state is always output and an ON signal is output. On the other hand, when the ball 281 moves in response to vibration or the like, the ball is turned OFF and the vibration detection signal is output.

  The controller 29 includes a remote control connection port 290 and a communication connection port 291. When the above oil water heater 2 is used alone, the remote control connection port 290 has a remote control 292 that also serves as a notification unit. Will be connected. The controller 29 is basically provided with hot water supply control by a hot water supply control unit, and is connected to two or more of the same oil water heaters 2 in parallel. A control unit for connection control when used as a connection type is also provided. Briefly describing the hot water supply control, for example, when a hot water tap is opened at a hot water supply destination connected to the hot water outlet 230, water is introduced into the water inlet 22 from a water supply path (for example, a water pipe) connected to the water inlet 220. When the incoming water flow rate is equal to or higher than the minimum operating flow rate (detected by the incoming water flow rate sensor 222), the combustion system is controlled to operate, the combustion burner 25 is combusted, and hot water having a predetermined temperature heated by the heat exchanger 21 is discharged. The hot water is discharged to a hot water supply path (not shown) through the water amount servo valve 232 and the hot water outlet 230 in an open state, and is supplied to the hot water supply destination.

  FIG. 2 shows a case where it is installed and used in a simple two-connection type. In this case, two oil water heaters 2 (indicated by reference numerals 2a and 2b in FIG. 2) having the same configuration are used, one of which is a master machine (see reference numeral 2a) and the other one is a slave machine ( 2b), the two communication connection ports 291 and 291 of both 2a and 2b are connected by a predetermined communication connection line 11, and both controllers 29 and 29 of both oil water heaters 2a and 2b are connected so that bidirectional communication is possible. Is done. The communication connection line 11 is a combination of three lines for identification signals for recognizing transmission, reception, and simple two-connection types. Then, a remote controller 292 that also serves as a notification unit is connected to the remote controller connection port 290 of the oil water heater 2a serving as the master machine. That is, when the communication connection line 11 is connected, the controllers 29 and 29 recognize that the two controllers 29 and 29 are of the simple two-link type and execute hot water supply control for the simple two-link, while the remote controller 292 is connected. The controller 29 of the oil water heater 2a on the side receiving the continuity signal recognizes that it is a master device of the simple two-connection type and executes control as a master device stored and stored in advance. The controller 29 of the oil water heater 2b on the side where the continuity signal is not input recognizes itself as a slave device of the simple two-connection type, and similarly executes control as a slave device stored and stored in advance. It has become.

  FIG. 3 shows a case where the unit is installed and used. In this case, three or more oil water heaters 2 having the same configuration are used (FIG. 3 shows an example in which three oil water heaters are connected, and reference numerals 2a, 2b, and 2c are given in order), The water inlet 220 and the hot water outlet 230 are connected in parallel to the water supply path 3 that receives water from a water pipe or the like and the hot water supply path 4 that follows the hot-water tap 41. In this case, in addition to the controller 29 of each oil water heater 2a, 2b, 2c, a system controller 5 for controlling the control of the number of units and the like is installed, and each oil water heater 2a, 2b is connected to this system controller 5. , 2c are connected to each other through the communication connection line 12 so as to be able to communicate with each other. In other words, each controller 29 is individually connected to the system controller 5 through the communication connection line 12 so as to be capable of bidirectional communication, thereby recognizing that it is a connected type installation and executing a hot water control for the connected type stored and stored in advance. It is supposed to be. In this case, a main remote controller 51 that also serves as a notification unit is connected to the system controller 5. Although the system controller 5 is illustrated as being installed separately from the oil water heater, in practice, the system controller 5 may be installed separately from the oil water heater or installed in any of the oil water heaters. Sometimes it is done. Moreover, the code | symbol 31 in FIG. 3 is a check valve for the backflow prevention to a feed water upstream.

  In the case of the simple two-connection type and the connection type, each oil water heater 2 is fixed and installed on a gantry 6 as shown in FIGS. 4 and 5. The gantry 6 includes a base portion 61 that is anchored to a base surface such as outdoors, and a support frame portion 62 that is fixed to the base portion 61 so as to protrude upward from the base portion 61. It is formed in a reverse T-shape. The number of oil water heaters 2, 2,... For the number of units connected to the support frame portion 62 (FIG. 5 shows a case where five units are connected) is fixedly installed side by side at the upper end portion, and below them. A water supply path 3, a fuel supply path 261, and a hot water supply path 4 are sequentially extended in the lateral direction and fixed from the top to the bottom side. The water supply path 3 is branched and connected to a water inlet 220 (see FIG. 3) of each oil water heater 2, and connected to the hot water supply path 4 so that a hot water outlet 230 (see FIG. 3) of each oil water heater 2 joins. In addition, the fuel supply path 261 is branched and connected to the fuel connection port 270 of each oil water heater 2. A water supply pipe or the like is connected to the connecting end 32 on one end side of the water supply path 3, a hot water supply pipe to the hot water supply destination 41 is connected to a connecting end 42 on one end side of the hot water supply path 4, and the fuel supply path An extension pipe to the fuel tank 26 (see FIG. 3) is connected to a connecting end 262 on one end side of the H.261.

  In the above installation situation, in the case of single installation, it is fixed to the installation target having relatively high support rigidity such as a building wall, while in the case of the above simple two-connection type installation or connection type installation, the above-mentioned Thus, since the upper end protrudes upward and is fixed to the gantry 6 which is a free end, the installation target is easily affected by a side wind or fine roll vibration. As a result, the seismic device 28 installed in each oil water heater 2 is also easier to operate (the ball 281 is easier to move) than in the case of single installation. For this reason, the controller 29 of each oil water heater 2 manually or automatically sets the sensitivity setting as to whether or not to output a safe operation signal based on the operation of the seismic sensor 28 according to such installation conditions. It can be changed by. Hereinafter, this point will be described in detail.

<First Embodiment>
In FIG. 6, as a configuration of the controller 29 in the case where both the change by the automatic processing and the change by the manual (external operation) are included, the safe operation based on the control part related to the safety process and the operation of the above-described seismic sensor 28 The control part and the component part concerning the change of the sensitivity setting of whether or not to perform are mainly extracted and shown.

  The controller 29 includes safety determination processing means 13, safe operation control means 14, notification processing means 15, installation status detection means 16, and reference change setting means 17. In the safety judgment processing means 13, a standard judgment standard for the output duration time and / or the number of times of output of the vibration detection signal output from the seismic device 28 is set in advance, and the vibration detection output from the seismic device 28 is detected. It is configured to receive the signal and determine whether to output a safe operation signal based on the determination criterion. An example of the determination based on the standard determination criterion will be described. The output of the vibration detection signal (OFF signal in the present embodiment) from the seismic sensor 28 is the output continuation time within the standard determination time T (for example, 5 to 8 seconds). If less than X (ms) occurs three times, or if X (ms) or more occurs once, it is determined that a vibration that should perform safe operation has occurred, and a safe operation signal is output.

  The safe operation control means 14 is configured to perform control to receive a safe operation signal output from the safety determination processing means 13 and execute a predetermined safe operation, and the notification processing means 15 It is configured to perform a notification process for notifying the user of execution or a change of a determination criterion described later. The safe operation by the safe operation control means 14 means that if the combustion burner 25 is in combustion, the combustion is forcibly stopped by the operation control of the combustion system 25 or the like, or the combustion is forcibly stopped for safety by the occurrence of vibration. For example, a notification command indicating that it has been made is transmitted.

  The installation status detection means 16 detects whether or not the installation status is likely to be subject to passive vibration caused by other than an earthquake. The oil water heater 2 is detected based on hardness (support rigidity) of whether or not the oil water heater 2 is fixedly installed. That is, it is determined whether or not the oil water heater 2 is in a single installation state, specifically, whether it is a single installation state as described above, a simple two-connection type installation situation, or a connection type installation situation. It is detected that the installation situation is difficult to receive passive vibration, and if it is a simple two-connection installation situation, it is detected that the installation situation is somewhat susceptible to passive vibration. Detects the situation. Specifically, it is determined whether or not the communication connection line 12 (see FIG. 3) is connected, and if it is connected, it is determined that the system controller 5 is connected, that is, it is in a connected installation state. If it is not connected, it is next determined whether or not the communication connection line 11 (see FIG. 2) is connected. If it is connected, it is determined that it is in a simple two-link installation state, and it must be connected. It is determined that it is in a single installation situation. If the determination result is a single installation status, the standard determination criterion is used as it is without outputting a change command. If the determination result is a simple two-connection type installation status, the standard determination criterion is changed to one step large value side. Is output to the reference change processing means 17, and if it is a connected installation situation, a command to change the standard determination reference to the two-stage large value side is output to the reference change setting means 17.

  The reference change setting means 17 receives an output of a change command from the installation status detection means 16 or receives an operation command from the external operation means 18 described later, and sets a standard criterion that has been set stepwise or continuously. Change to be set to. The stepwise change switching as described above may be performed by multiplying the determination time value, the output duration value and / or the number of outputs of the standard determination criterion by a preset step ratio, or the above determination time. Depending on whether the value, the output duration value and / or the specific number of times of output are arranged in advance and set in advance, it is set so as to select from them. To explain an example, when changing the above-mentioned standard judgment criterion to the one-stage large value side, the judgment time value T is doubled, the output duration value X is 1.5 times, and the number of times of output is three times. Is doubled. When changing to the two-level large value side, the determination time value T is doubled, the output duration value X is quadrupled, and the number of times of output is tripled. The ratio and specific values for changing to the large value side are as follows. The oil water heaters 2, 2,... Are actually fixed to the gantry 6 shown in FIG. Or an optimum value may be set after forcibly loading a crosswind or the like and testing in advance.

  The above is a case where the change of the determination standard by the standard change setting unit 17 is performed by automatic processing based on the detection result by the installation status detection unit 16, but the controller 29 is manually operated by the standard change setting unit 17. An external operation means 18 for changing the determination criterion is also provided. The external operation means 18 includes one or more of a remote controller 292, a changeover switch 181 and a changeover connection terminal 182. When the remote controller 292 is used as the external operation means 18, the remote controller 292 is provided with a switch for changing the determination criteria, a display unit, and the like. A desired criterion is selected from the display screen of the stepwise criterion on the large value side. When the changeover switch 181 is used, the changeover operation can switch between the standard side and the one-step large value side. Normally, it is set to the neutral position. In the case of using the switching connection terminal 182, a plurality of female terminals, for example, a standard judgment standard, a one-stage large value side judgment standard, a two-stage large value side judgment standard, etc., and these female terminals The controller 29 is provided with a male terminal for connecting to a female terminal selected from among the above-mentioned female terminals, and the determination standard changing operation is performed by reconnecting the male terminal to the female terminal selected from among the female terminals. It has become. In this case, normally, the male terminal is not connected.

  Even if the reference change setting unit 17 executes the change of the determination standard by automatic processing based on the change command from the installation state detection unit 16, the change of the determination standard based on the operation command from the external operation unit 18 is input. Then, priority is given to the change by the external operation (manual operation).

  When the criterion change setting unit 17 changes the determination criterion, the notification processing unit 15 performs notification processing to the effect that the determination criterion has been changed for the user. If it is changed by automatic processing, for example, if the display or voice guidance such as “Automatic processing changes and sets the sensitivity of the safety processing due to earthquake detection to the optimum one” or the like is changed by external operation, for example, “ “The sensitivity of the safety process by earthquake detection has been changed and set to level 2 by the current operation” or voice guidance is performed via the remote control 292, for example.

  It should be noted that the control parts 13 to 15 related to the safety process as described above, the control parts 16 and 17 related to the change of sensitivity setting as to whether or not to perform a safe operation based on the operation of the seismic sensor 28, and the external operation means 18 are provided. These components may be provided in the system controller 5. In this case, the controller 29 of each oil water heater 2 recognizing that it is connected type installation only sends the vibration detection signal from the seismic device 28 provided to the system controller 5, and from the system controller 5. The safe operation of the own oil water heater 2 may be executed based on the output of the safe operation signal. In this case, the main remote controller 51 is used as the notification means.

  According to the above, if the installation status is susceptible to passive vibration, that is, if the seismic device 28 is likely to operate due to cross wind or fine vibration that is a factor other than the occurrence of an earthquake, the determination criterion is set to a larger value side. As a result, the sensitivity setting is changed dull. In other words, even if the seismic device 28 malfunctions due to a factor that is different from the occurrence of an earthquake that should normally perform safe operation, the safe operation signal is changed to be difficult to output, so the combustion is forcibly stopped due to a factor other than the occurrence of the earthquake. Therefore, the occurrence of a situation where it becomes unusable will be suppressed / prevented. On the other hand, since it is changed by automatic processing to the optimum judgment standard according to the actual installation situation, safe operation processing at the time of occurrence of an earthquake can be performed accurately. In addition, since the change operation by the external operation means 18 is given priority, not only the determination standard is changed to the large value side but also the automatic determination of the determination standard changed to the large value side by automatic processing. It is also possible to cancel the change setting based on the user, and it is possible to prioritize the change intention / cancellation intention of the user or the like and to improve the usability.

Second Embodiment
FIG. 7 shows a controller 29 according to the second embodiment. The second embodiment includes a first integration processing unit 19 instead of the installation state detection unit 16 of the table embodiment, and the reference change setting unit 17 uses the change command output from the first integration processing unit 19. The determination criteria are changed.

  In addition, since the other component of the said 2nd Embodiment is the structure similar to the thing of 1st Embodiment, the same code | symbol is attached | subjected to the same component and the detailed description is abbreviate | omitted.

  The first integration processing means 19 integrates and stores the number of output of the vibration detection signal output from the seismic sensor 28 within the range of the set period, and the accumulated output number within the set period exceeds the set number A change command for changing the determination reference to a larger value stepwise or continuously is output to the reference change setting means 17. The above set period and set number of times are judged as being impossible in normal cases that vibration detection signals exceeding the set number of times are output within the set period, that is, the occurrence of earthquakes frequently occurs in a short period of time. It is only necessary to set the conditions. An example is once or more per week. In other words, it is usually difficult to imagine that an earthquake will occur more than once a week, and if the output of vibration detection signals occurs frequently, the above-mentioned cross winds other than earthquakes, repeated fine vibrations, or single installation Also, it is determined that the wall to be installed has low support rigidity and is easily affected by passive vibration, and the change command is output.

  When a change command is output from the first integration processing means 19, a command is also output to the notification processing means 15, and the remote control 292 as the notification means, for example, “optimizes the sensitivity of safety processing by earthquake detection by automatic processing. “Change to thing” or display a voice guidance to the user.

  In the second embodiment, the change operation using the external operation means 18 is given priority, or the system controller 5 is provided with a similar control part and the system controller 5 controls the processing. This is the same as in the first embodiment.

  In the case of the second embodiment, the same effect as that of the first embodiment can be obtained.

<Other embodiments>
The present invention is not limited to the first and second embodiments described above, but includes other various embodiments. That is, in the first and second embodiments, an example is shown in which determination criteria change setting by automatic processing (sensitivity setting change) and determination criterion change setting by manual operation using the external operation means 18 are used in combination. However, the present invention is not limited to this. For example, a control part by automatic processing (installation state detection means 16 in the first embodiment, first integration processing means 19 in the second embodiment) is omitted, and manual operation using the external operation means 18 is performed. You may comprise so that only the change setting of the determination reference | standard by operation is permitted.

  In the second embodiment, the first integration processing means 19 that integrates the number of output of the vibration detection output of the seismic sensor 28 is used, but instead of or in combination, it is safe within the set period. A second integration processing unit that accumulates and stores the number of outputs of the safe operation signal output from the determination processing unit 13 is provided. When the number of integration outputs by the second integration processing unit within the set period exceeds the set number You may make it output the change instruction | command for changing the determination reference | standard to the larger value side stepwise or continuously with respect to the change setting means 17. FIG.

  In the first and second embodiments, the case where the present invention is applied has been described by taking the oil water heater 2 as an example. However, the present invention is not limited to this, and the present invention is not limited to this. The present invention may be applied.

It is a schematic diagram which shows the example of an oil water heater as embodiment of this invention. It is a schematic diagram which shows the structure in the case of installing the oil water heater of FIG. 1 in a simple 2 connection type | mold. It is a schematic diagram which shows the structure in the case of installing the oil water heater of FIG. 1 in three or more connection type | molds. It is a side view which shows the installation state in the case of installing in a connection type | mold. FIG. 5 is a front view of FIG. 4. It is a block diagram which shows the content of a part of controller in 1st Embodiment. FIG. 7 is a diagram corresponding to FIG. 6 illustrating a controller in the second embodiment.

Explanation of symbols

2, 2a, 2b, 2c Oil water heater (combustion device)
DESCRIPTION OF SYMBOLS 11, 12 Communication connection line 13 Safety judgment processing means 15 Notification processing means 16 Installation condition detection means 17 Reference change setting means 18 External operation means 19 First integration processing means 28 Shock absorber 51 Main remote control (notification means)
181 changeover switch 182 changeover connection terminal 292 remote control (informing means)

Claims (11)

A seismic device that operates when vibration is generated and outputs a vibration detection signal, and criteria for determining the output duration and / or the number of times of output of the vibration detection signal output from the seismic device are set in advance. A combustion apparatus comprising: a safety determination processing unit that receives an output vibration detection signal and determines whether to output a safe operation signal based on the determination criterion;
External operation means connected to the safety determination processing means and changing and setting the determination criteria by external operation ;
Notification means;
First accumulation processing means for accumulating and storing the number of outputs of the vibration detection signal output from the seismic device within a set period;
Ru Bei Etei a notification processing unit that performs a notification process to the effect can be changed setting the judgment criteria by the informing means when the integrated output times in the set period exceeds the set number of times according to the first accumulation process unit ,
Combustion apparatus, characterized in that. A seismic device that operates when vibration is generated and outputs a vibration detection signal, and criteria for determining the output duration and / or the number of times of output of the vibration detection signal output from the seismic device are set in advance. A combustion apparatus comprising: a safety determination processing unit that receives an output vibration detection signal and determines whether to output a safe operation signal based on the determination criterion;
External operation means connected to the safety determination processing means and changing and setting the determination criteria by external operation ;
Notification means;
Second integration processing means for integrating and storing the number of outputs of the safe operation signal output from the safety determination processing means within a set period;
Ru Bei Etei a notification processing unit that performs a notification process to the effect can be changed setting the judgment criteria by the informing means when the integrated output times in the set period exceeds the set number of times by the second accumulation process unit ,
Combustion apparatus, characterized in that. A seismic device that operates when vibration is generated and outputs a vibration detection signal, and criteria for determining the output duration and / or the number of times of output of the vibration detection signal output from the seismic device are set in advance. A combustion apparatus comprising: a safety determination processing unit that receives an output vibration detection signal and determines whether to output a safe operation signal based on the determination criterion;
Installation status detection means for detecting whether or not the installation status is susceptible to passive vibration caused by other than an earthquake;
A reference change setting means for changing or setting the determination criterion to a larger value stepwise or continuously when it is detected by the installation state detection means that the installation condition is likely to receive the passive vibration. Combustion device characterized by. The combustion apparatus according to claim 3 , wherein
The installation status detection means detects whether it is a single installation status or a connected installation status in which two or more units are connected, and is an installation status that is susceptible to the passive vibration by detecting that it is a connected installation status. A combustion device configured to detect. A combustion apparatus according to claim 4 , wherein
The combustion apparatus configured to detect that the installation state detection means is a connected type installation state based on a connection signal by connection of a communication connection line. A seismic device that operates when vibration is generated and outputs a vibration detection signal, and criteria for determining the output duration and / or the number of times of output of the vibration detection signal output from the seismic device are set in advance. A combustion apparatus comprising: a safety determination processing unit that receives an output vibration detection signal and determines whether to output a safe operation signal based on the determination criterion;
First accumulation processing means for accumulating and storing the number of times of output of the vibration detection signal output from the seismoscope within a set period;
A reference change setting means for changing the determination criterion to a larger value stepwise or continuously when the number of accumulated outputs within the set period by the first integration processing unit exceeds the set number. Combustion device characterized. The combustion apparatus according to claim 6 , wherein
Notification means;
Combustion apparatus further comprising notification processing means for performing notification processing to change and set the determination criterion by the notification means when the number of integrated outputs within the set period by the first integration processing means exceeds the set number of times. . A seismic device that operates when vibration is generated and outputs a vibration detection signal, and criteria for determining the output duration and / or the number of times of output of the vibration detection signal output from the seismic device are set in advance. A combustion apparatus comprising: a safety determination processing unit that receives an output vibration detection signal and determines whether to output a safe operation signal based on the determination criterion;
Second integration processing means for integrating and storing the number of outputs of the safe operation signal output from the safety determination processing means within a set period;
And a reference change setting means for changing or setting the determination reference to a larger value stepwise or continuously when the number of integrated outputs within the set period by the second integration processing means exceeds the set number. Combustion device characterized. A combustion device according to claim 8 ,
Notification means;
Combustion apparatus further comprising notification processing means for performing notification processing to change and set the determination criterion by the notification means when the number of integrated outputs within the set period by the second integration processing means exceeds the set number of times. . A combustion apparatus according to any one of claims 3 , 6 , 7 , 8, or 9 ,
An external operation means connected to the safety determination processing means to change and set the determination criteria by an external operation;
A combustion apparatus configured such that a determination criterion change setting by the external operation means has priority over a determination criterion change setting by the reference change setting means. It is a combustion apparatus in any one of Claims 1-10 ,
A combustion apparatus having a hot water supply function of heating incoming water with combustion heat and discharging the hot water after heating.

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