JP6486756B2 - Water heater - Google Patents

Description

  The present invention relates to a water heater.

  A latent heat recovery type water heater is known (for example, see Patent Document 1). This type of latent heat recovery type water heater is provided with a neutralizer to neutralize acidic drain (condensed water). The neutralizing agent in the neutralizer decreases as the drain is neutralized. Therefore, when a water heater is used over a long period of time, maintenance of the neutralizer (replenishment with a neutralizing agent) is necessary. Therefore, in this type of water heater, a notification (warning) is displayed to the effect that the replenishment time of the neutralizing agent is approaching.

  Moreover, when a water heater is used over a long period of time, deterioration over time may occur in components of the water heater. When such deterioration over time is expected, special measures such as special display or voice notification (warning) may be taken, or the error recovery operation may be complicated.

JP 2009-92286 A

  However, even if the above-mentioned special display or voice notification is given, such notification alone does not cause any inconvenience in actual use of the water heater, and the user of the water heater has a problem in using the device. Can continue without. Therefore, there is a possibility that the user of the water heater will continue to use the water heater without making an inquiry to the trader (manufacturer, dealer, etc.).

  On the other hand, when the return operation from the error is complicated, the user cannot use the water heater until a specialized engineer visits the site. For this reason, if even maintenance / inspection is received, the user is forced to be inconvenienced even though the situation where the use of the water heater should not be immediately prohibited has been reached.

  In view of the above circumstances, it is desirable to provide a water heater that can prompt the user to make an inquiry to a supplier when maintenance and inspection are required.

  The hot water heater described below has a hot water supply section that heats water supplied from the water source and supplies it to the hot water outlet, and operates the pump to introduce water from the bathtub, and heats the water to the bathtub. And a control part that controls the operating state of the hot water supply part and the bath part, and the control part controls the hot water supply part and the bath part when receiving a hot water filling start command to the bathtub. A hot water filling processing unit for performing a hot water filling process for filling a bathtub with a predetermined amount of hot water, and a determination unit for determining whether or not the hot water supply part or the bath part has been used for a long period of time longer than a predetermined value. And a hot water that changes the time required from the start to the completion of the hot water filling process by the hot water treatment part when it is determined by the determination part that it has not reached the long-term use condition and when it has been determined that the long-term use condition has been reached. And a tension time changing unit.

  According to the water heater configured in this way, the hot water as described above is used when the hot water supply section or the bath section has not been used for a long period of time longer than a predetermined value and when the hot water supply section has reached a long-term use condition. The time required for the tensioning process is changed. For this reason, when it has been in a long-term use state, it will take longer than before to fill the bathtub, so users who have noticed this will feel uncomfortable, such as equipment failure I doubt. In addition, if the user wants to complete the filling of the bathtub in the same amount of time as before, the possibility that he / she wants to correct the malfunction of the device is also increased. Therefore, it is possible to increase the possibility that the user of the water heater makes an inquiry to the supplier, and it is possible to suppress the user from continuing to use the water heater without undergoing maintenance / inspection.

FIG. 1 is an explanatory view showing a configuration of a water heater. FIG. 2 is a flowchart of the hot water filling process exemplified as the first embodiment. FIG. 3 is a flowchart of the hot water filling process exemplified as the second embodiment. FIG. 4 is a flowchart of the hot water filling process exemplified as the third embodiment. FIG. 5 is a flowchart of the hot water filling process exemplified as the fourth embodiment. FIG. 6 is a flowchart of the hot water filling process exemplified as the fifth embodiment. FIG. 7 is a flowchart of the hot water filling process exemplified as the sixth embodiment. FIG. 8 is a flowchart of the hot water filling process exemplified as the seventh embodiment.

Next, the above-described water heater will be described with reference to an exemplary embodiment.
(1) First Embodiment First, a first embodiment will be described.

  As shown in FIG. 1, the water heater 1 has a hot water supply function for supplying hot water to a hot water tap or a bathtub 3 at a hot water outlet (not shown), and a bath function for keeping warm and reheating the hot water in the bathtub 3. It is an apparatus provided with.

  The water heater 1 has a hot water combustion chamber 5 and a bath combustion chamber 6. In the hot water combustion chamber 5, a hot water burner 11, a hot water primary heat exchanger 12A, a hot water secondary heat exchanger 12B, a hot water spark plug 13, a hot water frame rod 14, and the like are disposed. Further, a bottom burner 15, a bottom primary heat exchanger 16A, a bottom secondary heat exchanger 16B, a bottom spark plug 17, a bottom frame rod 18, a bottom combustion chamber thermistor 19 and the like are disposed in the bottom combustion chamber 6. ing.

  The hot water supply primary heat exchanger 12 </ b> A is a heat exchanger that mainly recovers sensible heat from the high-temperature exhaust gas generated by combustion in the hot water supply burner 11. The hot water supply secondary heat exchanger 12B is a heat exchanger that mainly recovers latent heat from the exhaust gas whose temperature has decreased due to heat exchange in the hot water supply primary heat exchanger 12A. The bath primary heat exchanger 16 </ b> A is a heat exchanger that mainly recovers sensible heat from the high-temperature exhaust gas generated by combustion in the bath burner 15. The bottom secondary heat exchanger 16B is a heat exchanger that mainly recovers latent heat from the exhaust gas whose temperature has decreased due to heat exchange in the bottom primary heat exchanger 16A.

  In the hot water supply secondary heat exchanger 12B and the bath secondary heat exchanger 16B, heat is further removed from the exhaust gas having a correspondingly high relative humidity. Therefore, the water vapor in the exhaust is condensed and drain (condensed water) is generated. In order to treat this drain, the water heater 1 is provided with drain drain pipes 20A and 20B, a neutralizer 21, and a drain pan 22. The drain collected by the drain pan 22 flows into the neutralizer 21 through the drain drain pipe 20A. The neutralizer 21 is provided to neutralize acidic drain containing nitrogen oxide or sulfur oxide. The neutralizer 21 is filled with a neutralizing agent (for example, calcium carbonate) that neutralizes the drain. Further, a neutralizer water level electrode 21 </ b> A that switches from off to on when the water level in the neutralizer 21 exceeds the upper limit value is provided inside the neutralizer 21. The neutralized drain that flows out from the neutralizer 21 is discharged to the outside through the drain drain pipe 20B.

  The hot water heater 1 has a combustion fan 23 and is configured to supply air to the hot water combustion chamber 5 and the bottom combustion chamber 6 by rotationally driving the combustion fan 23 by a fan motor 23A. An exhaust top 24 is provided above the hot water supply combustion chamber 5 and the bottom combustion chamber 6, and the exhaust can be exhausted to the outside of the hot water combustion chamber 5 and the bottom combustion chamber 6 through the exhaust top 24. In addition, an overheat prevention device 25 that forcibly stops the operation of the water heater 1 by fusing when the surroundings are in an abnormally high temperature state is provided near the hot water combustion chamber 5.

  The water heater 1 also includes a gas supply pipe 26 that serves as a gas supply path to the hot water burner 11 and the bottom burner 15. The gas supply pipe 26 has a main pipe 260 whose upstream end is connected to a gas supply source (for example, a city gas pipe or a propane gas pipe), and branch pipes 261, 262, 263, 264 branched from the main pipe 260. The gas is supplied to the hot water supply burner 11 and the bottom burner 15 via the branch pipes 261 to 264. In the gas supply pipe 26, a main gas electromagnetic valve 27 and a gas proportional valve 28 are provided in the main pipe 260. The branch pipes 261 to 264 are provided with hot water supply gas solenoid valves 291, 292 and 293 and bath gas solenoid valves 294.

  Furthermore, the hot water heater 1 includes hot water supply pipes 30 that form a water inlet to the hot water secondary heat exchanger 12B, hot water pipes 31 that form a hot water outlet from the hot water primary heat exchanger 12A, A bypass pipe 32 that branches off from the middle of the flow path of the water supply pipe 30 and communicates with the hot water discharge pipe 31 is provided. Further, as a bathing function piping, a bathing return pipe 33 that forms a bathing return passage for returning hot water in the bath 3 to the bathing secondary heat exchanger 16B, and bathing from the bathing primary heat exchanger 16A to the bath 3 A forward piping 34 that forms a flow path is provided. The bottom return pipe 33 and the bottom return pipe 34 form a part of a circulation channel that returns from the bathtub 3 to the bathtub 3 through the bottom secondary heat exchanger 16B and the bottom primary heat exchanger 16A. A branch pipe 35 that branches from the middle of the flow path of the hot water pipe 31 and communicates with the middle of the flow path of the bath return pipe 33 is provided between the hot water pipe 31 and the bath return pipe 33.

  Among these pipes, the water supply pipe 30 has an upstream end connected to a water supply source (for example, a water pipe). In the middle of the flow path from the upstream end side to the downstream end side of the water supply pipe 30, a strainer 36 for filtering water flowing from the upstream side to the downstream side in order from the upstream end side, and the amount of water flowing in the water supply pipe 30 are detected. There are provided a hot water supply water amount sensor 37, a hot water supply water thermistor 38 for detecting the temperature of the water flowing to the hot water primary heat exchanger 12A, a water amount control motor 39 for increasing / decreasing the amount of water flowing in the water supply pipe 30, and the like.

  The downstream hot water pipe 31 has a downstream end connected to a hot water outlet through a pipe. In the middle of the flow path from the upstream end side to the downstream end side of the hot water discharge pipe 31, in order from the upstream end side, a hot water supply emptying safety device 40 for forcibly stopping the hot water supply device 1 when hot water is detected, hot water supply Hot water supply heat exchanger thermistor 41 for detecting the temperature of hot water flowing out of the primary heat exchanger 12A, hot water supply hot water thermistor 42 for detecting the temperature of hot water downstream of the junction of the hot water discharge pipe 31 and the bypass pipe 32, and the hot water discharge pipe 31 An overpressure relief valve / water drain plug 43 that operates when the internal pressure becomes excessive and releases the pressure, and a water hammer buffer valve 44 that alleviates the water hammer action that occurs when hot water is stopped are provided. The bypass pipe 32 is provided with a bypass control motor 45 that performs increase / decrease control of the amount of water flowing through the bypass pipe 32.

  The branch pipe 35 is a pipe that forms a hot water supply path to the bath return pipe 33 on the downstream side with the hot water discharge pipe 31 side as the upstream side. In the middle of the flow path from the upstream end side to the downstream end side of the branch pipe 35, a dropped water electromagnetic valve 46 that is opened when hot water is supplied to the bathtub 3 through the branch pipe 35, and the amount of water flowing through the branch pipe 35 Are provided, and a check valve 48A, 48B and the like for preventing backflow in the branch pipe 35 are provided. The branch pipe 35 is provided with an edge cut-off valve 49, and due to a decrease in water pressure on the water supply side (water supply pipe 30 side) or the like, the flow that should be on the upstream side from the flow path that should be on the downstream side of the branch pipe 35. When a negative pressure that sucks water into the road is generated, the edge cut valve 49 is opened to prevent water from flowing back through the branch pipe 35.

  The upstream return pipe 33 is attached to the bathtub 3 via the bus adapter 50 on the upstream end side. In the middle of the flow path from the upstream end side to the downstream end side of the bath return pipe 33, hot water is supplied from the upstream side to the downstream side in the bath return thermistor 51 for detecting the temperature of hot water flowing in from the bathtub 3. Pump 52 for pumping, bath water flow switch 53 for detecting the flow of water (hot water) through the bath return pipe 33, a water level sensor 54 for detecting the water level in the bathtub 3 based on the pressure in the bath return pipe 33, etc. Is provided.

  Incidentally, when the hot water in the bathtub 3 is pressure-fed to the bath secondary heat exchanger 16B, the bath return pipe 33 has the upstream end on the bus adapter 50 side and the downstream end on the bath secondary heat exchanger 16B side as described above. However, when hot water is supplied to the bathtub 3 through the branch pipe 35, the hot water flows in the opposite direction from the junction of the bath return pipe 33 and the branch pipe 35 toward the bus adapter 50. It becomes a state.

  The downstream pipe 34 is attached to the bathtub 3 via the bus adapter 50 on the downstream end side. In the middle of the flow path from the upstream end side to the downstream end side of the bath piping 34, a bath safety device 55 and a bath primary heat exchanger 16 </ b> A for forcibly stopping the hot water heater 1 when it is detected. An outflow thermistor 56 is provided for detecting the temperature of hot water flowing out from the water.

  Moreover, drain pipes 57A, 57B, 57C, 57E, and 57F are provided in various pipes with which the water heater 1 is provided. By opening these drain pipes 57A to 57F, the water in the pipes is discharged to the outside. It is configured to be possible.

  In addition, the water heater 1 includes a controller 60 (corresponding to an example of a control unit referred to in the present specification) for controlling the operation state of the water heater function and the bath function, a hot water remote controller 61 disposed outside the bathroom, And a bathroom remote control 62 disposed in the bathroom. The controller 60 incorporates a microcomputer having a CPU, ROM, RAM, and the like. The various sensors described above (the hot-water supply frame rod 14, the bath frame rod 18, the hot-water supply water thermistor 38, the hot-water supply heat exchanger thermistor 41, the hot-water supply hot water supply). The information is input from the thermistor 42, the return thermistor 51, the forward thermistor 56, etc.), and the above-described various solenoid valves (the original gas solenoid valve 27, the gas proportional valve 28, the hot water supply solenoid valves 291 to 293, the bath gas solenoids). Valve 294, drop water electromagnetic valve 46, etc.), various motors (fan motor 23A, water amount control motor 39, bypass control motor 45), and operation of pump 52, etc. are controlled.

  In addition, the controller 60 is configured to store history information to that effect in a nonvolatile memory (corresponding to an example of a history storage unit in the present specification) when a long-term use state is reached. In the case of the present embodiment, the water heater 1 has been used for 10 years or more without being subjected to maintenance / inspection since the start of use, or has been used for 10 years or more since the last maintenance / inspection. In this case, it is determined that a long-term use state has been reached, and history information to that effect is stored in the nonvolatile memory.

  Both the hot water remote controller 61 and the bath remote controller 62 are provided with a user interface such as an input unit that accepts an input operation from a user and an output unit that displays information and outputs sound to the user, and the information input from the input unit is a controller. In addition to being transmitted to 60, information is displayed and sound is output from the output unit based on information transmitted from the controller 60. The input unit is provided with a plurality of switches including an operation switch that can switch whether the water heater 1 is in an operation state or an operation stop state.

  The sounds output from the hot water remote controller 61 and the bathroom remote controller 62 include an alarm sound or an alarm message for alerting the user, an acceptance sound output when various switches are operated, and the like. The hot water remote controller 61 and the bath remote controller 62 are configured such that a user can execute a call between the hot water remote controller 61 and the bath remote controller 62. When the user performs an operation for starting a call on one of the hot water remote controller 61 and the bath remote controller 62, a ringing tone is output on the other remote controller. When a predetermined operation is performed on the other remote controller according to the ringing tone, a call can be started between the hot water remote controller 61 and the bath remote controller 62.

[Operating state during hot water operation]
Next, the outline | summary is demonstrated about the operating state of the water heater 1 when a user performs hot water supply operation. When the user opens the hot water tap at the hot water outlet, the water flowing in from the water inlet goes to the hot water primary heat exchanger 12A through the hot water quantity sensor 37 and the hot water secondary heat exchanger 12B. At this time, a signal having a frequency corresponding to the flow velocity is output from the hot water supply amount sensor 37, and when the controller 60 senses that this signal has reached a specified frequency, the controller 60 controls the fan motor 23A to control the combustion fan 23. Rotate.

  After the combustion fan 23 rotates and the pre-purge operation is performed, the original gas solenoid valve 27 and the hot water supply gas electromagnetic valves 291 to 293 are simultaneously opened, the gas proportional valve 28 is operated in a slow ignition operation, and gas is supplied to the hot water supply burner 11. Is done. At the same time, the hot water supply spark plug 13 is continuously discharged to ignite the hot water supply burner 11. After ignition, when the flame is detected by the hot water supply frame rod 14 and it is confirmed that it is burning, the slow ignition operation is terminated.

  When the slow ignition operation is finished, the proportional control is subsequently started. When there is a difference between the hot water temperature detected by the hot water supply hot water thermistor 42 and the set temperature arbitrarily set by the user, the controller 60 determines that there is a difference, and opens and closes the hot water supply gas electromagnetic valves 291 to 293 and the gas proportional valve. By 28, the amount of gas is continuously changed to keep the hot water temperature constant. In addition, since the water amount control motor 39 adjusts to an appropriate amount of water, the maximum amount of tapping water is always ensured. At this time, a signal is sent from the controller 60 to the fan motor 23A in accordance with a change in the gas amount by the gas proportional valve 28, whereby the relationship between the gas amount and the air amount is always kept constant.

  In a situation where hot water is being supplied as described above, when the user closes the hot water tap, the frequency signal from the hot water supply amount sensor 37 disappears, so the controller 60 uses the original gas solenoid valve 27 and the hot water supply gas solenoid valve 291. ˜293 is closed, the fire is extinguished, and the post-purge operation is started. Thereafter, when the post-purge operation times out, the combustion fan 23 stops.

[Operation state during bath operation]
Next, the outline | summary is demonstrated about the operating state of the water heater 1 when a user performs bathing operation. When the user presses the automatic switch of the hot water remote controller 61 or the bath remote controller 62, the dropped water electromagnetic valve 46 is turned on, the hot water quantity sensor 37 is turned on, and the hot water combustion operation is started. Hot water is supplied to the bathtub 3 through the check valves 48 </ b> A and 48 </ b> B and the bath water sensor 47. Thereafter, when the amount of water detected by the boiling water amount sensor 47 becomes the set amount of water, the dropped water electromagnetic valve 46 is turned off, the hot water supply water amount sensor 37 is turned off, and hot water supply combustion stops.

  Next, the pump 52 is activated to start circulating hot water. Circulation of hot water is detected by the bath water flow switch 53. At this time, if the temperature sensed by the return thermistor 51 is equal to or lower than the set temperature, the controller 60 controls the fan motor 23A to rotate the combustion fan 23. When the combustion fan 23 is rotated and a rotation speed signal is transmitted to the controller 60, the original gas solenoid valve 27 and the bottom gas solenoid valve 294 are then opened and the bottom burner 15 is supplied with gas and the bottom ignition is performed at the same time. The plug 17 is continuously discharged.

  When the bottom burner 15 is ignited, flame is detected by the bottom frame rod 18, discharge by the spark plug is stopped, and heating of the bottom is started. When the bath water circulated by the pump 52 reaches the set temperature, the bath return burner 15 is extinguished by detecting the temperature by the bath return thermistor 51 and the pump 52 is stopped. Then, a notification buzzer is sounded to inform the boiling.

  When the reheating combustion as described above is stopped and the interval time until the bath 3 hot water temperature is confirmed thereafter, only the pump 52 is operated to circulate the bath water. At this time, if the temperature of the bath is lower than the set temperature, retreat is performed. Thereafter, when the temperature of the bath becomes equal to or higher than the set temperature, the operation of the pump 52 stops there, and the pump 52 is activated after the interval time has elapsed, and the same operation as described above is repeated. These series of operations are stopped when an automatic switch of the hot water remote controller 61 or the bath remote controller 62 is pressed.

[Water filling treatment]
Hereinafter, the hot water filling process executed in the water heater 1 of the present embodiment will be described with reference to FIG. This hot water filling process is a process executed in the controller 60 when the “floor automatic button” is pressed on the hot water remote controller 61 or the bath remote controller 62.

  When the hot water filling process is started, the controller 60 first determines whether or not the hot water heater 1 has been in a long-term use state (S1). The controller 60 that executes S1 corresponds to an example of a determination unit in this specification. In the case of this embodiment, when the water heater 1 has been used for 10 years or more without receiving maintenance / inspection since the start of use, or when it has been used for more than 10 years since the last maintenance / inspection. It is determined that the water heater 1 has been in a long-term use state.

  When it is determined in S1 that the water heater 1 has reached the long-term use state (S1: YES), the controller 60 has nonvolatile information that the controller 60 has history information indicating that the water heater 1 has reached the long-term use state. Store in the memory (S2). Then, after waiting for a predetermined time (S3), the process proceeds to S10. S3 is a processing step for delaying the time required from the start to completion of the hot water filling process, and the controller 60 that executes S3 corresponds to an example of the hot water filling time changing unit referred to in this specification. Note that how long to wait in S3 is arbitrary, but it is preferable that the user feels a delay, for example, a delay of about 5 minutes or 10 minutes is sufficient. On the other hand, when it is determined in S1 that the water heater 1 has not reached the long-term use state (S1: NO), the process proceeds to S10 without executing the above S2 and S3.

  Thus, when proceeding from either S1 or S3 to S10, the controller 60 opens the dropping water electromagnetic valve 46 to supply a predetermined amount of water, and during that time, the pump 52 is operated to supply priming water to the pump 52. Introduce (S10). Then, the controller 60 determines whether or not there is remaining hot water in the bathtub 3 based on whether or not the hot water circulation 53 is detected when the pump 52 is activated (S20).

  When it is determined in S20 that there is remaining hot water in the bathtub 3 (S20: YES), the controller 60 detects the remaining hot water amount in the bathtub 3 by the water level sensor 54, and the set hot water amount and the remaining hot water amount that are set arbitrarily by the user. Is set to the required amount of hot water (S30). Moreover, when it is judged in S20 that there is no remaining hot water in the bathtub 3 (S20: NO), the controller 60 sets the set hot water amount arbitrarily set by the user to the required hot water amount (S40).

  When S30 or S40 is finished, the controller 60 drops the required amount of hot water into the bathtub 3 (S50). In S50, the controller 60 opens the dropped water electromagnetic valve 46 and measures the amount of dropped hot water with the hot water supply amount sensor 37. When the measured amount of hot water reaches the required amount of hot water set in S30 or S40, the controller 60 opens the dropped water electromagnetic valve 46. close up.

  Subsequently, the controller 60 boils the hot water in the bathtub (S60). In S60, the controller 60 operates the pump 52 to circulate hot water between the bath primary heat exchanger 16A and the bath secondary heat exchanger 16B and the bathtub 3 to operate the combustion fan 23 and the bath gas electromagnetic. The hot water in the bathtub 3 is heated by opening the valve 294 and the like and igniting the gas in the bottom burner 15. The temperature of the hot water being circulated is detected by the bathing thermistor 51 and the bathing thermistor 56, and based on the temperature of the hot water detected here, the controller 60 allows the temperature of the hot water in the bathtub 3 to be arbitrarily determined by the user. It is determined whether or not the set temperature has been reached. When the hot water temperature in the bathtub 3 reaches the set temperature, the controller 60 closes the bath gas electromagnetic valve 294 and the like to stop the combustion in the bath burner 15 and stops the hot water circulation by the pump 52. Then, the operation of the combustion fan 23 is stopped.

When S60 ends, the controller 60 notifies the hot water filling remote controller 61 and the bath remote controller 62 of the hot water filling completion (S70), and the hot water filling process shown in FIG.
[effect]
As described above, according to the water heater 1, the hot water as described above is used when the hot water heater 1 has not been used for a long period of time longer than a predetermined value and when the hot water heater 1 has not been used for a long time. The time required for the tension processing (S1 to S70) is changed. More specifically, in the water heater 1, when the long-term use state is reached, the above-described priming water introduction start time (execution start time of S 10) is delayed as compared with the case where the long-term use state is not reached. Therefore, various processes (S20 to S70) executed after the introduction of priming water is also delayed, and the completion time of the hot water filling process shown in FIG. 2 can be delayed.

  Therefore, when it has been in a long-term use state, it takes more time than before to complete the filling of the bathtub 3, so that the user who has noticed this feels uncomfortable and the equipment has failed. I doubt. In addition, if the user wants to finish filling the bathtub 3 in the same amount of time as before, the possibility that he / she wants to correct the malfunction of the device is increased. Therefore, the possibility that the user of the water heater 1 makes an inquiry to the supplier can be increased, and the user can be prevented from continuing to use the water heater 1 without undergoing maintenance / inspection.

  Further, in the case of the water heater 1, history information indicating that it has been determined that a long-term use state has been reached by executing S <b> 2 is stored in the nonvolatile memory of the controller 60. Therefore, when a specialized engineer visits the site, by checking the history information, it is true whether the hot water filling process took a long time due to the long-term use state. It can be easily determined whether the hot water filling process has taken a long time due to a failure.

(2) Second Embodiment Next, a second embodiment will be described. In each of the embodiments after the second embodiment, only a part of the configuration exemplified in the embodiment that has been described above has been changed, and the details are mainly described with respect to differences from the embodiment that has been described previously. A detailed description of the same parts as those of the embodiment described and described earlier will be omitted.

[Water filling treatment]
Hereinafter, the hot water filling process in the second embodiment will be described with reference to FIG. In the hot water filling process of the first embodiment, the processing steps of S1 to S3 are executed before S10. Instead, in the hot water filling process of the second embodiment, the processing steps of S11 to S13 are performed in S10. This is executed after and before S20, and this is different from the first embodiment.

  That is, after introducing priming water into the pump 52 in S10, the controller 60 determines whether or not the water heater 1 has been in a long-term use state (S11). The controller 60 that executes S11 corresponds to an example of a determination unit referred to in this specification. Also in the case of this embodiment, when the water heater 1 has been used for over 10 years without receiving maintenance / inspection since the start of use, or when it has been used for over 10 years since the last maintenance / inspection. In addition, it is determined that the water heater 1 has been in a long-term use state. This point is the same as in the first embodiment.

  When it is determined in S11 that the water heater 1 has reached the long-term use state (S11: YES), the controller 60 has nonvolatile information that the controller 60 has history information indicating that the water heater 1 has reached the long-term use state. Store in the memory (S12). Then, after waiting for a predetermined time (S13), the process proceeds to S20. These S12 and S13 are processing steps equivalent to S2 and S3 shown in the first embodiment, and the controller 60 that executes S13 corresponds to an example of the filling time changing unit referred to in this specification. On the other hand, when it is determined in S11 that the water heater 1 has not reached the long-term use state (S11: NO), the process proceeds to S20 without executing the above-described S12 and S13.

In addition, since the process step after S20 is completely the same as 1st embodiment, it abbreviate | omits about further description.
[effect]
Even in the water heater 1 according to the second embodiment described above, the case where the water heater 1 has not been used for a long period of time longer than a predetermined value and when it has been used for a long period of time as described above. The time required for the hot water filling process (S10 to S70) is changed. More specifically, in the water heater 1, the determination time for determining the presence and amount of remaining hot water in the bathtub 3 when the long-term use state is reached (when the long-term use state is not reached) (the execution start time of S20) ) Is delayed. Therefore, the various processes (S30 to S70) executed after the determination of the presence / absence and amount of remaining hot water in the bathtub 3 are also delayed, and the completion time of the hot water filling process shown in FIG. 3 can be delayed.

  Therefore, if a user who notices such a delay suspects a malfunction of the device, the possibility of making an inquiry to the supplier can be increased, and the user continues to use the water heater 1 without undergoing maintenance and inspection. Can be suppressed.

(3) Third Embodiment Next, a third embodiment will be described.
[Water filling treatment]
Hereinafter, the hot water filling process in the third embodiment will be described with reference to FIG. In the hot water filling process of the first embodiment, the processing steps S1 to S3 are executed before S10. Instead, in the hot water filling process of the third embodiment, the processing steps of S41 to S43 are performed as S30 or S30. This is executed after S40 and before S50, and is different from the first and second embodiments in this respect.

  That is, after setting the required amount of hot water in S30 or S40, the controller 60 determines whether or not the water heater 1 has been in a long-term use state (S41). The controller 60 that executes S41 corresponds to an example of a determination unit referred to in this specification. The specific determination method is the same as in the first and second embodiments.

  When it is determined in S41 that the water heater 1 has reached the long-term use state (S41: YES), the controller 60 includes the history information indicating that the water heater 1 has reached the long-term use state. Store in the memory (S42). Then, after waiting for a predetermined time (S43), the process proceeds to S50. These S42 and S43 are processing steps equivalent to S2 and S3 shown in the first embodiment, and the controller 60 that executes S43 corresponds to an example of the filling time changing unit referred to in this specification. On the other hand, in S41, when it is determined that the water heater 1 has not reached the long-term use state (S41: NO), the process proceeds to S50 without executing the above-described S42 and S43.

In addition, since the process step after S50 is completely the same as that of the first embodiment, further explanation is omitted.
[effect]
Even in the water heater 1 of the third embodiment described above, the case where the water heater 1 has not been used for a long period of time longer than a predetermined value and when it has been used for a long period of time as described above. The time required for the hot water filling process (S10 to S70) is changed. More specifically, in the water heater 1, when the long-term use state is reached, the start time for dropping the required amount of hot water (the execution start time of S50) is delayed as compared with the case where the long-term use state is not reached. For this reason, various processes (S60 to S70) executed after completion of dropping of the required hot water amount are also delayed, and the completion time of the hot water filling process shown in FIG. 4 can be delayed. Therefore, if a user who notices such a delay suspects a malfunction of the device, the possibility of making an inquiry to the supplier can be increased, and the user continues to use the water heater 1 without undergoing maintenance and inspection. Can be suppressed.

(4) Fourth Embodiment Next, a fourth embodiment will be described.
[Water filling treatment]
Hereinafter, the hot water filling process in the fourth embodiment will be described with reference to FIG. In the hot water filling process of the first embodiment, the processing steps of S1 to S3 are executed before S10. Instead, in the hot water filling process of the fourth embodiment, the processing steps of S51 to S53 are performed in S50. This is executed after and before S60, and is different from the first to third embodiments in this respect.

  That is, after dropping the necessary amount of hot water into the bathtub 3 in S50, the controller 60 determines whether or not the water heater 1 has been in a long-term use state (S51). The controller 60 that executes S51 corresponds to an example of a determination unit in this specification. The specific determination method is the same as in the first to third embodiments.

  When it is determined in S51 that the water heater 1 has reached the long-term use state (S51: YES), the controller 60 has nonvolatile information that the controller 60 has history information indicating that the water heater 1 has reached the long-term use state. Store in the memory (S52). Then, after waiting for a predetermined time (S53), the process proceeds to S60. These S52 and S53 are processing steps equivalent to S2 and S3 shown in the first embodiment, and the controller 60 that executes S53 corresponds to an example of the filling time changing unit referred to in this specification. On the other hand, in S51, when it is determined that the water heater 1 has not reached the long-term use state (S51: NO), the process proceeds to S60 without executing the above-described S52 and S53.

Since the processing steps after S60 are exactly the same as those in the first embodiment, further explanation is omitted.
[effect]
Even in the water heater 1 of the fourth embodiment described above, the case where the water heater 1 has not been used for a long period of time longer than a predetermined value and when it has been in a long-term use condition, as described above. The time required for the hot water filling process (S10 to S70) is changed. More specifically, in the water heater 1, when the long-term use state is reached, the boiling start time (execution start time of S <b> 60) is delayed as compared with the case where the long-term use state is not reached. Therefore, the process (S70) executed after the completion of boiling is also delayed, and the completion time of the hot water filling process shown in FIG. 5 can be delayed. Therefore, if a user who notices such a delay suspects a malfunction of the device, the possibility of making an inquiry to the supplier can be increased, and the user continues to use the water heater 1 without undergoing maintenance and inspection. Can be suppressed.

(5) Fifth Embodiment Next, a fifth embodiment will be described.
[Water filling treatment]
Hereinafter, the hot water filling process in the fifth embodiment will be described with reference to FIG. In the hot water filling process of the first embodiment, the processing steps of S1 to S3 are executed before S10. Instead, in the hot water filling process of the fifth embodiment, the processing steps of S61 to S63 are performed in S60. This is executed after and before S70, and this is different from the first to fourth embodiments.

  That is, after boiling the hot water in the bathtub 3 in S60, the controller 60 determines whether or not the water heater 1 has been in a long-term use state (S61). The controller 60 that executes S61 corresponds to an example of a determination unit referred to in this specification. The specific determination method is the same as in the first to fourth embodiments.

  In S61, when it is determined that the water heater 1 has reached the long-term use state (S61: YES), the controller 60 has nonvolatile information that the controller 60 has history information indicating that the water heater 1 has reached the long-term use state. Store in the memory (S62). Then, after waiting for a predetermined time (S63), the process proceeds to S70. These S62 and S63 are processing steps equivalent to S2 and S3 shown in the first embodiment, and the controller 60 that executes S63 corresponds to an example of the filling time changing unit referred to in this specification. On the other hand, when it is determined in S61 that the water heater 1 has not reached the long-term use state (S61: NO), the process proceeds to S70 without executing the above-described S62 and S63.

In addition, since the process step after S70 is completely the same as that of the first embodiment, further explanation is omitted.
[effect]
Even in the water heater 1 according to the fifth embodiment described above, the case where the water heater 1 has not been used for a long period of time longer than a predetermined value and when it has been used for a long period of time as described above. The time required for the hot water filling process (S10 to S70) is changed. More specifically, in the water heater 1, when reaching the long-term use state, the hot water filling completion notification time (execution start time of S <b> 70) is delayed as compared with the case where the long-term use state is not reached. Therefore, it is possible to delay the user's notice of completion of filling. Therefore, if a user who notices that the hot water filling completion notification is delayed from the previous time, suspects that the equipment is faulty, etc., the possibility of making an inquiry to the supplier can be increased, and the user will not receive maintenance or inspection. It can suppress using the water heater 1 as it is.

(6) Sixth Embodiment Next, a sixth embodiment will be described.
[Water filling treatment]
Hereinafter, the hot water filling process in the sixth embodiment will be described with reference to FIG. In the first embodiment to the fifth embodiment, the timing of executing the processing steps S2, S12, S42, S52, and S62 for delaying the filling process is different for each embodiment. In the sixth embodiment, the filling process is performed. The timing for executing the processing step S5 for delaying the processing is the same as in the first embodiment. However, in the case of the first embodiment, the standby for a predetermined time is performed in S2, whereas in the case of the sixth embodiment, the inspection process is executed in S5.

  That is, when the hot water filling process is started, the controller 60 determines whether or not the water heater 1 has been in a long-term use state (S1). The controller 60 that executes S1 corresponds to an example of a determination unit in this specification. The specific determination method is the same as in the first to fifth embodiments.

  When it is determined in S1 that the water heater 1 has reached the long-term use state (S1: YES), the controller 60 has nonvolatile information that the controller 60 has history information indicating that the water heater 1 has reached the long-term use state. Store in the memory (S2). And an inspection process is performed (S5). As long as the inspection process executed in S5 is an inspection completed within a time equivalent to the delay assumed in S1, any inspection content may be used. It is good to check whether it is working.

  When the inspection process is completed, the process proceeds to S10. The controller 60 that executes S5 corresponds to an example of the filling time changing unit referred to in this specification. On the other hand, when it is determined in S1 that the water heater 1 has not reached the long-term use state (S1: NO), the process proceeds to S10 without executing the above-described S2 and S5.

In addition, since the process step after S10 is completely the same as that of 1st embodiment, it abbreviate | omits about further description.
[effect]
Even in the water heater 1 according to the sixth embodiment described above, the case where the water heater 1 has not been used for a long period of time longer than a predetermined value and when it has been in a long-term use condition, as described above. The time required for the hot water filling process (S10 to S70) is changed. More specifically, in the water heater 1, when the long-term use state is reached, the above-described priming water introduction start time (execution start time of S 10) is delayed as compared with the case where the long-term use state is not reached. Therefore, various processes (S20 to S70) executed after the completion of introduction of the priming water are also delayed, and the completion time of the hot water filling process shown in FIG. 7 can be delayed.

  Moreover, according to the water heater 1, when a long-term use state is reached, a predetermined inspection process that is not normally performed during the hot water filling process is executed, and the hot water filling process is performed for the time required for the inspection process. Completion time can be delayed. Therefore, the hot water filling process is not simply delayed, but the delay time can be effectively used for the inspection process.

(7) Seventh Embodiment Next, a seventh embodiment will be described.
[Water filling treatment]
Hereinafter, the hot water filling process in the seventh embodiment will be described with reference to FIG. In 7th embodiment, the timing which performs process step S41 which judges whether it has reached the long-term use state is the same as that of 3rd embodiment. However, in the case of the third embodiment, the standby for a predetermined time is performed in S43, whereas in the case of the seventh embodiment, the flow rate when the required amount of hot water is dropped into the bathtub 3 is changed in S55 and S56.

  That is, after setting the required amount of hot water in S30 or S40, the controller 60 determines whether or not the water heater 1 has been in a long-term use state (S41). The controller 60 that executes S41 corresponds to an example of a determination unit referred to in this specification. The specific determination method is the same as in the first to sixth embodiments.

  In S41, when it is determined that the water heater 1 has not been in a long-term use state (S41: NO), the controller 60 drops the required amount of hot water into the bathtub 3 at a standard flow rate (S55). On the other hand, if it is determined in S41 that the water heater 1 has reached the long-term use state (S41: YES), the controller 60 has history information indicating that the water heater 1 has reached the long-term use state. It memorize | stores in a non-volatile memory (S42). Then, the controller 60 drops the required amount of hot water into the bathtub 3 at a flow rate smaller than the standard flow rate (S56).

  In S56, the water amount control motor 39 is controlled so that the flow rate detected by the hot water supply amount sensor 37 is smaller than the standard flow rate (for example, 70% of the standard flow rate). Thereby, even if the required amount of hot water is the same in S55 and S56, the time required for S56 to drop the required amount of hot water becomes longer. The controller 60 that executes S56 corresponds to an example of the hot water filling time changing unit in this specification.

In addition, although it progresses to S60 after S55 or S56 is complete | finished, since the process step after S60 is completely the same as that of 1st embodiment, it abbreviate | omits about further description.
[effect]
Even in the water heater 1 of the seventh embodiment described above, the case where the water heater 1 has not been used for a long period of time longer than a predetermined value and when it has been in a long-term use condition, as described above. The time required for the hot water filling process (S10 to S70) is changed. More specifically, in the water heater 1, when the long-term use state is reached (when S56 is executed), the bathtub 3 is more than when the long-term use state is not reached (when S55 is executed). The flow rate of hot water supplied to the water is reduced, and the completion time of the hot water filling process can be delayed. Therefore, if a user who notices such a delay suspects a malfunction of the device, the possibility of making an inquiry to the supplier can be increased, and the user continues to use the water heater 1 without undergoing maintenance and inspection. Can be suppressed.

(8) Supplement Although the hot water heater has been described with reference to exemplary embodiments, the above-described embodiments are merely exemplified as one aspect of the present invention. That is, the present invention is not limited to the exemplary embodiments described above, and can be implemented in various forms without departing from the technical idea of the present invention.

  For example, in the above embodiment, the processing step of storing history information is performed in the above-described filling process, but the history information is stored in a process different from the filling process. The history information may be stored at different timings. In that case, in the hot water filling process described above, the processing step of storing history information may be omitted. When history information is stored in a process different from the hot water filling process, in the above hot water filling process, whether the history information stored by the separate process as described above is stored in the nonvolatile memory of the controller. By determining whether or not the hot water heater 1 has been in a long-term use state, it may be determined.

In addition, it can grasp | ascertain from the exemplary embodiment demonstrated above that the water heater demonstrated by this specification may be further provided with the structure as mentioned below.
First, in the water heater described in the present specification, the hot water filling processing unit performs a process of supplying priming water from the hot water supply unit to the pump provided in the bath portion when the hot water is filled in the bathtub. The hot water filling time changing unit delays the introduction time of the priming water by a predetermined time when the determination unit determines that the long-term use state has been reached, rather than when it is determined that the long-term use state has not been reached. Accordingly, the time required for the hot water filling process may be increased.

  According to the water heater configured as described above, when the long-term use state is reached, the introduction start time of the priming water is delayed as compared with the case where the long-term use state is not reached. Therefore, various processes executed after the completion of introduction of the priming water are also delayed, and the completion time of the hot water filling process can be delayed. Therefore, if a user who notices such a delay suspects a malfunction of the equipment, the possibility of making an inquiry to the supplier can be increased, and the user can continue to use the water heater without undergoing maintenance and inspection. Can be suppressed.

  Further, in the water heater described in the present specification, the hot water filling processing unit is configured to execute a process of determining the presence and amount of remaining hot water in the bathtub when the hot water is filled in the bathtub. When the determination unit determines that a long-term use state has been reached, the time change unit determines a determination time for determining the presence and amount of remaining hot water in the bathtub rather than determining that the long-term use state has not been reached. The time required for the hot water filling process may be increased by delaying the time.

  According to the water heater configured in this way, when the long-term use state is reached, the determination time for determining the presence and amount of the remaining hot water in the bathtub is delayed as compared with the case where the long-term use state is not reached. Therefore, the various processes executed after the completion of the determination of the presence and amount of remaining hot water in the bathtub are also delayed, and the completion time of the hot water filling process can be delayed. Therefore, if a user who notices such a delay suspects a malfunction of the equipment, the possibility of making an inquiry to the supplier can be increased, and the user can continue to use the water heater without undergoing maintenance and inspection. Can be suppressed.

  In addition, in the water heater described in the present specification, the hot water filling processing unit drops a necessary amount of hot water required for setting the amount of hot water in the bathtub from the hot water supplying unit to the bathtub when the hot water is filled in the bathtub. The hot water filling time changing unit is configured to perform the hot water filling time change unit when the determination unit determines that the long-term use state has been reached. The time required for the hot water filling process may be increased by delaying the predetermined time.

  According to the water heater configured as described above, when the long-term use state is reached, the start time for dropping the required amount of hot water is delayed as compared with the case where the long-term use state is not reached. Therefore, various processes executed after completion of dropping of the required hot water amount are also delayed, and the completion time of the hot water filling process can be delayed. Therefore, if a user who notices such a delay suspects a malfunction of the equipment, the possibility of making an inquiry to the supplier can be increased, and the user can continue to use the water heater without undergoing maintenance and inspection. Can be suppressed.

  Further, in the water heater described in the present specification, the hot water filling processing unit is configured to perform a process of boiling until the hot water temperature in the bathtub reaches a set temperature when the hot water is filled in the bathtub. When the determination unit determines that the long-term use state has been reached, the tensioning time changing unit delays the boiling start time by a predetermined time compared to the case where it is determined that the long-term use state has not been reached. The time required for the tensioning process may be increased.

  According to the water heater configured as described above, when the long-term use state is reached, the boiling start time is delayed as compared with the case where the long-term use state is not reached. Therefore, various processes executed after the completion of boiling are also delayed, and the completion time of the hot water filling process can be delayed. Therefore, if a user who notices such a delay suspects a malfunction of the equipment, the possibility of making an inquiry to the supplier can be increased, and the user can continue to use the water heater without undergoing maintenance and inspection. Can be suppressed.

  Further, in the water heater described in the present specification, the hot water filling processing unit is configured to execute a process of notifying the user that the hot water filling is completed when the hot water filling to the bathtub is performed, The hot water filling time changing unit delays the hot water filling completion notification time to the user by a predetermined time when the judgment unit judges that the long-term use state has been reached, rather than when it is judged that the long-term use state has not been reached. By doing so, the time required for the hot water filling process may be increased.

  According to the water heater configured as described above, when the long-term use state is reached, the notification timing of the completion of the hot water filling is delayed compared to the case where the long-term use state is not reached. Therefore, it is possible to delay the user's notice of completion of filling. Therefore, if a user who notices that the hot water filling completion notification is delayed from the previous time, suspects that the equipment is faulty, etc., the possibility of making an inquiry to the supplier can be increased, and the user will not receive maintenance or inspection. It is possible to suppress the continued use of the water heater.

  Moreover, in the water heater described in the present specification, the hot water filling time changing unit moves to the bathtub more than the case where it is determined that the long-term use state has not been reached when the determination unit determines that the long-term use state has been reached. The time required for the hot water filling process may be increased by decreasing the flow rate of the hot water supplied.

  According to the water heater configured in this way, the flow rate of hot water supplied to the bathtub is reduced when the long-term use state is reached, compared with the case where the long-term use state is not reached, and the completion time of the hot water filling process is reduced. Can be delayed. Therefore, if a user who notices such a delay suspects a malfunction of the equipment, the possibility of making an inquiry to the supplier can be increased, and the user can continue to use the water heater without undergoing maintenance and inspection. Can be suppressed.

  Further, in the water heater described in the present specification, when the hot water filling time changing unit determines that the long-term use state has not been reached by the determination unit, the hot water filling process is performed. The time required for the hot water filling process may be increased by executing a predetermined inspection process that is not performed inside.

  According to the water heater configured as described above, when a long-term use state is reached, a predetermined inspection process that is not performed during the hot water filling process is performed, and the hot water filling process is completed for the time required for the inspection process. The time can be delayed. Therefore, if a user who notices such a delay suspects a malfunction of the equipment, the possibility of making an inquiry to the supplier can be increased, and the user can continue to use the water heater without undergoing maintenance and inspection. Can be suppressed. In addition, the hot water filling process is not simply delayed, but the delay time can be effectively used for the inspection process.

  Moreover, in the water heater described in the present specification, the control unit may include a history storage unit that stores history information to that effect when the determination unit determines that a long-term use state has been reached.

  According to the water heater configured as described above, history information indicating that the determination unit has determined that a long-term use state has been reached is stored in the history storage unit. Therefore, when a specialized engineer visits the site, by checking the history information, it is true whether the hot water filling process took a long time due to the long-term use state. It can be easily determined whether the hot water filling process has taken a long time due to a failure.

  DESCRIPTION OF SYMBOLS 1 ... Hot water heater, 3 ... Bathtub, 5 ... Hot water combustion chamber, 6 ... Bath combustion chamber, 11 ... Hot water burner, 12A ... Hot water primary heat exchanger, 12B ... Hot water secondary heat exchanger, 13 ... Hot water spark plug, 14 ... Hot water frame rod, 15 ... Buro burner, 16A ... Buro primary heat exchanger, 16B ... Buro secondary heat exchanger, 17 ... Buro spark plug, 18 ... Buro frame rod, 19 ... Buro combustion chamber thermistor, 20A, 20B ... Drain drain pipe, 21 ... neutralizer, 21A ... neutralizer water level electrode, 22 ... drain pan, 23 ... combustion fan, 23A ... fan motor, 24 ... exhaust top, 25 ... overheat prevention device, 26 ... gas supply pipe, 260 ... Main pipe, 261,262,263,264 ... Branch pipe, 27 ... Original gas solenoid valve, 28 ... Gas proportional valve, 291,292,293 ... Hot water gas solenoid valve, 294 ... Buro gas solenoid valve, 30 ... Water pipe 31 ... Hot water supply pipe, 32 ... Bypass pipe, 33 ... Full return pipe, 34 ... Full return pipe, 35 ... Branch pipe, 36 ... Strainer, 37 ... Hot water supply water quantity sensor, 38 ... Hot water supply water thermistor, 39 ... Water quantity control motor, 40 ... Hot water supply emptying safety device, 41 ... Hot water supply heat exchanger thermistor, 42 ... Hot water supply hot water thermistor, 43 ... Overpressure relief valve and water drain valve, 44 ... Water hammer buffer valve, 45 ... Bypass control motor, 46 ... Drop water solenoid valve 47 ... Blow water amount sensor, 48A, 48B ... Check valve, 49 ... Edge cut valve, 50 ... Bus adapter, 51 ... Blow back thermistor, 52 ... Pump, 53 ... Blow water flow switch, 54 ... Water level sensor, 55 ... Buff Evacuation safety device, 56 ... Flood thermistor, 57A, 57B, 57C, 57E, 57F ... Drain plug, 60 ... Controller, 61 ... Hot water supply remote control, 62 ... The filtrate remote control.

Claims (13)

A hot water supply section for heating the water supplied from the water source side and supplying it to the hot water outlet,
A bath that operates the pump to introduce water from within the bathtub, heats the water and circulates it into the bathtub;
A control unit for controlling the operating state of the hot water supply unit and the bath unit,
The controller is
When a hot water filling start instruction to the bathtub is received, a hot water filling processing unit for controlling the hot water supply part and the bath part to perform a hot water filling process for filling the bathtub with a predetermined amount of hot water,
A determination unit for determining whether or not the hot water supply unit or the bath has reached a long-term use state in which the hot water supply unit or the bath unit has been used for a long period of time greater than or equal to a predetermined period;
The time required from the start to the completion of the hot water filling process by the hot water filling processing unit is changed between the case where it is determined that the long-term use state has not been reached by the determination unit. have a and hot water filling time changing unit that,
The hot water filling processing unit is configured to execute a process of supplying priming water from the hot water supply unit to the pump provided in the bath when the hot water filling to the bathtub is performed,
The hot water filling time changing unit determines the introduction start timing of the priming water for a predetermined time when it is determined that the long-term use state has not been reached when the determination unit determines that the long-term use state has been reached. By delaying, the time required for the filling process is increased.
Water heater. The water heater according to claim 1 ,
The hot water filling processing unit is configured to perform a process of determining the presence and amount of remaining hot water in the bathtub when the hot water is filled in the bathtub,
When the hot water filling time changing unit determines that the long-term use state has been reached by the determination unit, the presence and amount of remaining hot water in the bathtub is greater than when it is determined that the long-term use state has not been reached. The hot water heater is configured such that the time required for the hot water filling process is lengthened by delaying the determination time for determining the predetermined time. A hot water supply section for heating the water supplied from the water source side and supplying it to the hot water outlet,
A bath that operates the pump to introduce water from within the bathtub, heats the water and circulates it into the bathtub;
A control unit for controlling the operating state of the hot water supply unit and the bath unit,
The controller is
When a hot water filling start instruction to the bathtub is received, a hot water filling processing unit for controlling the hot water supply part and the bath part to perform a hot water filling process for filling the bathtub with a predetermined amount of hot water,
A determination unit for determining whether or not the hot water supply unit or the bath has reached a long-term use state in which the hot water supply unit or the bath unit has been used for a long period of time greater than or equal to a predetermined period;
The time required from the start to the completion of the hot water filling process by the hot water filling processing unit is changed between the case where it is determined that the long-term use state has not been reached by the determination unit. have a and hot water filling time changing unit that,
The hot water filling processing unit is configured to perform a process of determining the presence and amount of remaining hot water in the bathtub when the hot water is filled in the bathtub,
When the hot water filling time changing unit determines that the long-term use state has been reached by the determination unit, the presence and amount of remaining hot water in the bathtub is greater than when it is determined that the long-term use state has not been reached. The time required for the hot water filling process is lengthened by delaying the determination time for determining the predetermined time.
Water heater. It is a water heater as described in any one of Claim 1- Claim 3,
The hot water filling processing unit is configured to perform a process of dropping a necessary hot water amount required for setting the hot water amount in the bathtub to a set hot water amount from the hot water supply unit to the bathtub when the hot water filling to the bathtub is performed. ,
When the hot water filling time changing unit determines that the long-term use state has been reached by the determination unit, the hot water filling time changing unit sets the required hot water amount dropping start time for a predetermined time than when it is determined that the long-term use state has not been reached. The hot water heater is configured so that the time required for the hot water filling process is increased by delaying only the hot water. A hot water supply section for heating the water supplied from the water source side and supplying it to the hot water outlet,
A bath that operates the pump to introduce water from within the bathtub, heats the water and circulates it into the bathtub;
A control unit for controlling the operating state of the hot water supply unit and the bath unit,
The controller is
When a hot water filling start instruction to the bathtub is received, a hot water filling processing unit for controlling the hot water supply part and the bath part to perform a hot water filling process for filling the bathtub with a predetermined amount of hot water,
A determination unit for determining whether or not the hot water supply unit or the bath has reached a long-term use state in which the hot water supply unit or the bath unit has been used for a long period of time greater than or equal to a predetermined period;
The time required from the start to the completion of the hot water filling process by the hot water filling processing unit is changed between the case where it is determined that the long-term use state has not been reached by the determination unit. have a and hot water filling time changing unit that,
The hot water filling processing unit is configured to perform a process of dropping a necessary hot water amount required for setting the hot water amount in the bathtub to a set hot water amount from the hot water supply unit to the bathtub when the hot water filling to the bathtub is performed. ,
When the hot water filling time changing unit determines that the long-term use state has been reached by the determination unit, the hot water filling time changing unit sets the required hot water amount dropping start time for a predetermined time than when it is determined that the long-term use state has not been reached. The time required for the filling process is increased by delaying only
Water heater. It is a water heater as described in any one of Claim 1-5 ,
The hot water filling processing unit is configured to perform a process of boiling until the hot water temperature in the bathtub reaches a set temperature when the hot water is filled in the bathtub,
The hot water filling time changing unit delays the boiling start time by a predetermined time when the determination unit determines that the long-term use state has been reached, rather than when it is determined that the long-term use state has not been reached. The hot water heater is configured to increase the time required for the hot water filling process. A hot water supply section for heating the water supplied from the water source side and supplying it to the hot water outlet,
A bath that operates the pump to introduce water from within the bathtub, heats the water and circulates it into the bathtub;
A control unit for controlling the operating state of the hot water supply unit and the bath unit,
The controller is
When a hot water filling start instruction to the bathtub is received, a hot water filling processing unit for controlling the hot water supply part and the bath part to perform a hot water filling process for filling the bathtub with a predetermined amount of hot water,
A determination unit for determining whether or not the hot water supply unit or the bath has reached a long-term use state in which the hot water supply unit or the bath unit has been used for a long period of time greater than or equal to a predetermined period;
The time required from the start to the completion of the hot water filling process by the hot water filling processing unit is changed between the case where it is determined that the long-term use state has not been reached by the determination unit. have a and hot water filling time changing unit that,
The hot water filling processing unit is configured to perform a process of boiling until the hot water temperature in the bathtub reaches a set temperature when the hot water is filled in the bathtub,
When the hot water filling time changing unit is determined to have reached the long-term use state by the determination unit, than when it is determined that the long-term use state has not been reached, at the start of boiling,
The time required for the hot water filling process is increased by delaying the period by a predetermined time.
Water heater. A water heater according to any one of claims 1 to 7 ,
The hot water filling processing unit is configured to perform a process of notifying the user that the hot water filling is completed when the hot water filling to the bathtub is performed,
When the hot water filling time changing unit determines that the long-term use state has been reached by the determination unit, the hot water filling time changing unit is configured to notify the user that the hot water filling is complete, rather than when it is determined that the long-term use state has not been reached. A water heater configured to increase the time required for the hot water filling process by delaying by a predetermined time. A hot water supply section for heating the water supplied from the water source side and supplying it to the hot water outlet,
A bath that operates the pump to introduce water from within the bathtub, heats the water and circulates it into the bathtub;
A control unit for controlling the operating state of the hot water supply unit and the bath unit,
The controller is
When a hot water filling start instruction to the bathtub is received, a hot water filling processing unit for controlling the hot water supply part and the bath part to perform a hot water filling process for filling the bathtub with a predetermined amount of hot water,
A determination unit for determining whether or not the hot water supply unit or the bath has reached a long-term use state in which the hot water supply unit or the bath unit has been used for a long period of time greater than or equal to a predetermined period;
The time required from the start to the completion of the hot water filling process by the hot water filling processing unit is changed between the case where it is determined that the long-term use state has not been reached by the determination unit. have a and hot water filling time changing unit that,
The hot water filling processing unit is configured to perform a process of notifying the user that the hot water filling is completed when the hot water filling to the bathtub is performed,
When the hot water filling time changing unit determines that the long-term use state has been reached by the determination unit, the hot water filling time changing unit is configured to notify the user that the hot water filling is complete, rather than when it is determined that the long-term use state has not been reached. By delaying for a predetermined time, the time required for the hot water filling process is increased.
Water heater. A water heater according to any one of claims 1 to 9 , wherein
The hot water filling time changing unit is not implemented during the hot water filling process when it is determined that the long-term use state has not been reached when the determination unit determines that the long-time use state has been reached. A hot water heater configured to increase the time required for the hot water filling process by executing an inspection process. A hot water supply section for heating the water supplied from the water source side and supplying it to the hot water outlet,
A bath that operates the pump to introduce water from within the bathtub, heats the water and circulates it into the bathtub;
A control unit for controlling the operating state of the hot water supply unit and the bath unit,
The controller is
When a hot water filling start instruction to the bathtub is received, a hot water filling processing unit for controlling the hot water supply part and the bath part to perform a hot water filling process for filling the bathtub with a predetermined amount of hot water,
A determination unit for determining whether or not the hot water supply unit or the bath has reached a long-term use state in which the hot water supply unit or the bath unit has been used for a long period of time greater than or equal to a predetermined period;
The time required from the start to the completion of the hot water filling process by the hot water filling processing unit is changed between the case where it is determined that the long-term use state has not been reached by the determination unit. have a and hot water filling time changing unit that,
The hot water filling time changing unit is not implemented during the hot water filling process when it is determined that the long-term use state has not been reached when the determination unit determines that the long-time use state has been reached. By executing the inspection process, the time required for the hot water filling process is increased.
Water heater. It is a water heater as described in any one of Claim 1 to 11 ,
The hot water filling time changing unit determines the flow rate of hot water supplied to the bathtub when it is determined by the determination unit that the long-term use state has been reached, rather than when it is determined that the long-term use state has not been reached. A hot water heater configured to increase the time required for the hot water filling process by reducing the hot water filling process. A water heater according to any one of claims 1 to 12 ,
The said control part has a history memory | storage part which memorize | stores the historical information to that effect, when it determines with the said determination part having reached the said long-term use state.