JP5396927B2 - Hot water storage water heater - Google Patents

Description

  The present invention relates to a hot water storage type water heater having a human sensor in a bathroom remote controller.

  Conventionally, hot water storage type water heaters represented by heat pump water heaters are equipped with automatic hot water filling and reheating functions, which are now indispensable functions as the number of all-electric houses increases. In particular, the automatic bath operation function fills the bathtub up to the set water level or the set amount of water (automatic hot water filling function), automatically raises the temperature in the bathtub to the set temperature (automatic warming function), If the water level falls, the water is automatically replenished to the set water level (automatic addition hot water function), or has a very convenient function for the user (for example, see Patent Document 1).

FIG. 3 is a configuration diagram of a conventional hot water storage type water heater. As shown in FIG. 3, the conventional hot water storage type hot water heater includes a hot water storage tank 110 that stores hot water. The hot water in the hot water storage tank 110 is mixed with cold water by a mixing valve 123 and supplied to the bathtub 122. Further, when the hot water in the bathtub 122 is replenished, the temperature of the hot water in the bathtub is lower than a predetermined temperature after the circulating pump 126 is driven and the temperature of the hot water in the bathtub is detected by the bath thermistor 130. In the reheating heat exchanger 127, the bath water and the hot water in the hot water storage tank 110 are heat-exchanged to reheat the bath water.
Japanese Patent Application Laid-Open No. 09-170752

  However, in the conventional configuration, even if a person is not taking a bath, the circulation pump 126 is periodically driven every predetermined time to check the temperature of the bathtub with the bath thermistor 130. The cold water in the pipe connecting the tub and the tub is supplied into the tub, and as a result, not only the temperature drop due to heat dissipation but also the hot water temperature drop caused by supplying chilled water to the tub. As a result, the amount of heat for boiling is excessive, and there is a problem from the viewpoint of energy saving.

  In particular, a hot water heater having a hot water storage tank is a hot water heater based on the idea that hot water is stored in the hot water storage tank during nighttime when electricity is cheap and hot water in the hot water storage tank is used during high daytime power. So, if the hot water in the hot water tank causes a shortage of water before the nighttime when electricity is cheap, the hot water in the hot water tank will have to be boiled during the daytime when the power is high .

  This invention solves the said conventional subject, and it aims at providing the hot water storage type water heater which improved the energy-saving performance by optimizing the timing of heat retention operation | movement.

In order to solve the conventional problems, a hot water storage type water heater of the present invention includes a hot water storage tank for storing hot water, a reheating heat exchanger for exchanging heat between hot water in a bathtub and high temperature water in the hot water storage tank, A circulation pump for sending hot water in the bathtub to the reheating heat exchanger, a bathroom remote controller having an operation unit for setting a hot water supply temperature and a bath operation, and whether the bathroom remote controller has a person in the bathroom. A human sensor comprising: a human sensor for determining whether the human sensor detects a person in the human sensor, and starts a warming operation of hot water in the bathtub when the human sensor is operated, and the human sensor is operated by operating the operation unit. part of the decision level capable of setting and a speaker for informing the speech to the bathroom remote controller, while setting the determination level of the human sensor, in particular to inform the reaction state of the motion sensors by the speaker When the human sensor detects the heat insulation operation, the circulation pump is driven every predetermined time to supply the chilled water in the pipe connecting the bathtub and the heat exchanger to the bathtub. Therefore, the temperature of the hot water in the bathtub is not lowered, and the user can enter the heat retaining operation only when the user enters the bathroom. Connected.

  Also, whatever the size of the user's bathroom, the sensitivity of the human sensor unit 36 can be changed to a level that suits the installation conditions. It can be avoided that there is no person and there is no energy saving due to the heat insulation operation.

  The present invention can provide a hot water storage type hot water heater having improved energy saving performance by optimizing the timing of the heat retaining operation.

The hot water storage type water heater of the first invention is a hot water storage tank for storing hot water, a reheating heat exchanger for exchanging heat between the hot water in the bathtub and the hot water in the hot water storage tank, and the hot water in the bathtub. A circulation pump to be sent to the vessel, a bathroom remote control having an operation unit for setting hot water supply temperature and bath operation, and a human sensor in the bathroom remote control for determining whether there is a person in the bathroom, A water heater that starts a warming operation of hot water in a bathtub when a human sensor is detected by the human sensor unit, and is configured to be able to set a determination level of the human sensor unit by operating the operation unit, and the bathroom remote controller The sound sensor is provided with a speaker, and while the determination level of the human sensor is set , the circulation pump is driven every predetermined time by notifying the reaction state of the human sensor through the speaker , Heat exchange Since it is no longer necessary to supply the cold water in the pipe connecting to the bathtub to lower the temperature of the hot water in the bathtub, the user can enter the warming operation only when entering the bathroom, so it is useless Therefore, it is possible to reduce the amount of heat for heating, leading to improvement in energy saving, and the human sensor unit 36 at a level suitable for the installation conditions regardless of the size of the user's bathroom. Therefore, it is possible to avoid the case where no person is detected and the heat retaining operation is not performed or the heat retaining operation is not performed and energy is not saved even when there is no person. Furthermore, the bathroom remote controller is provided with a speaker for notifying the voice, and whether or not a person is detected by notifying the reaction state of the presence sensor through the speaker while setting the determination level of the presence sensor. It can be judged audibly and maintainability can be improved.

  The hot water storage type water heater according to the second aspect of the present invention, in particular, according to the first aspect of the present invention, is provided with a storage means for storing the judgment level of the human sensor unit, so that it is necessary to set every time when bathing is performed. Absent.

  The hot water storage type water heater of the third invention is installed by incorporating the step of setting the judgment level of the human sensor in the step of the test operation mode performed when the hot water heater is installed, particularly in the first or second invention. This is a step that is always set by the contractor during the trial run, and does not need to be set when the user uses it, so that the energy saving operation using the human sensor can be performed from the first hot water filling.

  The hot water storage type water heater according to the fourth aspect of the invention is particularly configured in the first to third aspects of the invention so that it can be set by specially operating the operation unit when setting the judgment level of the human sensor after the trial operation mode is completed. As a result, it is possible to prevent the user from changing the judgment level of the human sensor unnecessarily due to an operation error. .

  The hot water storage type water heater of the fifth invention, in particular, in the first to fourth inventions, is provided with a display unit for displaying a set temperature and an operating status on the bathroom remote controller, and while setting the judgment level of the human sensor, By displaying the reaction state of the human sensor on the display unit, it is possible to visually determine whether or not a person is detected when the determination level of the human sensor unit is switched. Can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a block diagram showing a hot water storage type hot water heater according to an embodiment of the present invention.

  As shown in FIG. 1, the hot water storage type water heater of the present invention has a hot water storage tank 10 for storing hot water therein, a hot water supply pipe 11 is connected to the upper part of the hot water storage tank 10, and a lower part of the hot water storage tank 10 is A water supply pipe 12 is connected. Further, the water supply pipe 12 is connected through a pressure reducing valve 14 for reducing the water pressure from a water supply port 13 to which a water supply is connected.

  In the hot water storage tank 10, hot water is separated into an upper part and water is separated into a lower part due to a difference in specific gravity, and temperature layers are formed vertically. When boiling hot water in the hot water storage tank 10, hot water is stored from the upper part of the tank 10, so that the hot water is pushed down to form a layer and stored. Then, a hot water supply terminal such as a shower 21 and a currant 20 is connected to the end of the hot water supply pipe 11, and when hot water is discharged from the hot water supply terminal, a water supply pipe 12 is connected to the lower part of the hot water storage tank 10, so that the constant water supply pressure is maintained. The water is supplied from the water supply pipe 12 into the tank 10, and the tank 10 is always filled with hot water.

  Further, a boiling pipe 15 connected from the lower part to the upper part is connected to the hot water storage tank 10, and a boiling pump 16 and a heat source unit 17 are interposed in the boiling pipe 15. At the time of boiling, the boiling pump 16 is driven to supply hot water in the lower part of the tank 10 to the heat source unit 17, and hot water is heated by the heat source unit 17 and then returned to the upper part of the tank 10 to store hot water. Go. The heat source unit 17 may be a heat pump having a heat pump cycle mechanism or a heat source such as a heater.

  In addition, a hot water supply mixing valve 43 that connects the hot water supply pipe 11 and the water supply branch pipe 42 branched from the water supply pipe 12 to generate hot water at an appropriate temperature is provided. In 43, it is mixed with hot water at a set temperature and supplied.

  Moreover, the hot water supply mixing valve 23 which connects the tap hot water pipe 11 and the supply water branch pipe 42, and produces | generates hot water of an appropriate temperature is provided, the hot water supply thermistor 24 and the hot water filling to a bath in the downstream of the hot water supply mixing valve 23 are provided. A bath pouring valve 25 for starting / stopping the bath, and when hot water filling to the bath is started, the bath pouring valve 25 is opened and hot water mixed at an appropriate temperature by the bath hot water mixing valve 23 is bathed. 22 is supplied. In addition, the control of the bath / hot water mixing valve 23 drives the bath / hot water mixing valve 23 so that the temperature detected by the bath / hot water thermistor 24 becomes the set hot water temperature.

  In addition, a reheating heat exchanger 27 for reheating the hot water in the bathtub 22 is provided, and the reheating heat exchanger 27 performs heat exchange between the hot water in the bathtub 22 and the high-temperature water in the hot water storage tank 10. doing. And the circulation pump 26 for supplying the hot water in the bathtub 22 to the reheating heat exchanger 27 is provided, and the bathtub 22, the circulation pump 26, and the reheating heat exchanger 27 are connected annularly by the hot water supply piping. .

Moreover, the hot water discharged from the hot water supply pipe 11 flows into the high-temperature water circulation side circuit of the reheating heat exchanger 27, and the hot water after heat exchange in the reheating heat exchanger 27 is returned to the bottom of the hot water storage tank 10. It is comprised so that. A reheating pump 29 is disposed between the bottom of the hot water storage tank 10 and the reheating heat exchanger 27, and the reheating pump 29 is driven to supply high-temperature water to the reheating heat exchanger 27. I am trying to supply.

  Further, between the circulation pump 26 and the reheating heat exchanger 27, a water level sensor 40 for detecting the level of hot water in the bathtub 22 and a bath thermistor 30 for detecting the temperature of hot water in the bathtub 22 are provided. A recirculating thermistor 28 is disposed on the downstream side of the water circulation side of the soaking heat exchanger 27. When the hot water in the bathtub 22 is replenished, the circulation pump 26 is first driven, the temperature of the bathtub water is detected by the bath thermistor 30, and the circulation pump 26 is driven until the detected temperature of the bathtub water reaches the set temperature. To do. Further, in order not to supply hot water to the bathtub 22 from the viewpoint of safety, the circulation pump 26 is driven so that the temperature detected by the reheating thermistor 28 does not exceed 60 degrees.

  A bathroom remote controller 32 is installed in the bathroom. The bathroom remote control 32 includes an operation unit 34 such as an UP / DOWN switch for changing the hot water supply temperature and a bath automatic operation switch for turning on / off the bath operation automatically. In addition, there is a display unit 35 for displaying the operation status of the water heater such as the hot water temperature and the bath automatic operation. The bathroom remote control 32 includes a human sensor unit 36 for detecting that a person has entered the bathroom and a storage unit (not shown) for storing the determination level of the human sensor unit 36. ing. Note that the human sensor 36 is an infrared sensor.

  Next, the hot water filling operation to the bathtub 22 will be described.

  First, the bath pouring valve 25 is opened when the automatic bath filling operation switch provided in the operation unit 34 of the bathroom remote controller 32 is turned on, or when the automatic hot water filling time is set in advance, the reserved time is reached. The hot water mixed by the bath hot water mixing valve 23 is supplied to the bathtub 22.

  When the hot water filling is completed to the set water level set by the bathroom remote controller 32 or another hot water supply remote controller (not shown) installed in the kitchen, the bath pouring valve 25 is closed, the circulation pump 26 is driven, and the bathtub The hot water in 22 is agitated, and heat is exchanged with hot water in the hot water storage tank 10 in the reheating heat exchanger 27 to raise the bath temperature to the set temperature.

  When the heating to the set temperature is completed, a notification sound is emitted from a speaker (not shown) provided in the bathroom remote controller 32, or a display notifying that the bath has boiled is displayed on the display unit 35. At this time, when the user takes a bath, the bath temperature is the set temperature, so that the user can take a bath comfortably.

  Next, the operation for keeping warm water in the bathtub 22 will be described.

  Originally, the whole family should bathe at the end of the hot water filling, but due to the difference in family life patterns, there may be a case where bathing takes place at a time later than the time when the hot water filling is completed. In this case, the conventional hot water storage type water heater automatically performs the heat insulation operation. However, as described above, the circulation pump 26 is driven every predetermined time, and the temperature of the hot water in the bathtub 22 is lowered every time the circulation pump 26 is driven.

  Therefore, in the present invention, while the human sensor unit 36 detects that a person is not in the bathroom, the warming operation is not automatically performed. That is, after detecting that the person has entered the bathroom by the human sensor unit 36, the circulation pump 26 is driven to start the heat insulation operation.

  As a result, compared with the case where the circulating pump 26 is driven every predetermined time (for example, every 15 minutes) and the heat insulation operation is automatically performed as in the conventional hot water storage type water heater, the heat exchange with the bathtub 22 is performed. Since the frequency | count that the cold water collected in the pipe | tube which connects with the container 27 enters into the bathtub 22 reduces extremely, it prevents preventing the temperature of the hot water in the bathtub 22 falling except heat dissipation.

  The heat insulation operation refers to an operation in which the temperature of the hot water in the bathtub 22 is maintained at a set temperature. In addition to performing the reheating with the reheating heat exchanger 27, the bath 22 can be used as long as the hot water does not overflow from the bathtub 22. The hot water valve 25 may be opened to supply hot water from the hot water storage tank 10 to raise the temperature in the bathtub 22.

  However, in consideration of the user's usability and preferences, the conventional warming operation may be more convenient than the warming operation using the human sensor unit 36. Therefore, in the hot water storage type water heater of the present embodiment, the human sensor unit 36 can be disabled and a normal heat retaining operation can be performed. Therefore, the user can select both the heat insulation operation using the human sensor 36 and the normal heat insulation operation, and the usability is greatly improved.

  When performing a conventional heat insulation operation, the function of the human sensor 36 is invalidated by performing a predetermined operation with the bathroom remote controller 32. As a result, as in the conventional heat insulation operation, the circulation pump 26 is driven every predetermined time (for example, every 15 minutes), the temperature in the bathtub 22 is detected by the bath thermistor 30, and the detected temperature is the predetermined temperature. When the temperature is lower than, the reheating pump 29 is driven to replenish hot water in the bathtub 22. In this way, whether or not to use the function of the human sensor 36 can be changed according to the user's preference.

  In addition, when the human sensor unit 36 is enabled, the circulation pump 26 may be driven only when the human sensor unit 36 detects a person. However, the absence time of the person is too long, and only the heat radiation. Even if it exists, the temperature of the hot water in the bathtub 22 may become extremely low. At that time, if the human sensor 36 detects a person and then chases the hot water in the bathtub 22, it chases to the set temperature after the person enters the bathtub 22 and enters the bathtub 22. You may not be able to.

  Therefore, in the first embodiment, when the human sensor unit 36 is enabled, the predetermined time during which the circulation pump 26 is moved is set longer when the human sensor unit 36 is disabled. Yes. That is, the circulation pump 26 is driven every predetermined time α when the human sensor unit 36 is disabled, and the driving time of the circulating pump 26 when the human sensor unit 36 is enabled is the predetermined time β. When performing each time, there is a relationship of a predetermined time α <a predetermined time β. As a result, when the human sensor unit 36 is enabled, the number of times the circulation pump 26 is driven is reduced compared to when it is disabled, and the hot water in the bathtub 22 generated by the circulation pump 26 being driven. Can be prevented.

  Further, in the heat insulation operation when the human sensor 36 is disabled, the temperature is detected by the bath thermistor 30 by driving the circulation pump 26, and the detected temperature of the hot water in the bathtub 22 becomes a predetermined temperature or less. If it is, the reheating pump 29 is driven to replenish hot water in the bathtub 22.

However, in the heat insulation operation in the case where the human sensor unit 36 is enabled, if the human sensor unit 36 detects that a person has entered the room, the person who has entered the bathtub 22 can use the bathtub 22 if the person does not immediately start chasing. By the time, the temperature of the hot water in the bathtub 22 cannot be raised. Therefore, in a normal heat retention operation, the circulation pump 26 is first driven and the temperature of the hot water in the bathtub 22 is detected by the bath thermistor 30, and if the temperature is lower than the predetermined temperature, the reheating pump 29 is driven. When the sensor unit 36 is enabled, when the human sensor unit 36 detects a person,
The circulation pump 26 and the reheating pump 29 are driven simultaneously. As a result, the temperature of the hot water in the bathtub 22 can be increased more quickly.

  Even when the human sensor 36 is enabled, if the time from when another user bathes until the next user bathes is shorter than the predetermined time A, the next Even if it is detected that the user has entered the bathroom, the heat insulation operation is not started. Since the time interval from another user to the next user is short, it is determined that the temperature of the hot water in the bathtub 22 has not decreased so much.

  For example, assume that the predetermined time A is set to 10 minutes. And if the time which detected the user Y's entrance after the bathing of the user X was 5 minutes, a heat retention operation will not be started. If the heat insulation operation is started when the time interval has not passed so much, the cold water remaining in the hot water supply pipe connecting the reheating heat exchanger 27 and the bathtub 22 enters, and conversely the hot water in the bathtub 22 This is because the temperature may be lowered.

  The heat retention operation when the human sensor 36 detects a person skips the step of checking the temperature in the bathtub 22 and drives the circulation pump 26 and the reheating pump 29 simultaneously as described above. Since the cold water remaining in the hot water supply pipe connected from the soaking heat exchanger 27 to the bathtub 22 is supplied to the bathtub 22 without being subjected to heat exchange, the temperature of the hot water in the bathtub 22 is lowered, so the time interval By not performing the heat insulation operation at the time when the temperature has not passed so much, the temperature drop of the hot water in the bathtub 22 is prevented.

  Next, adjustment of the determination level of the human sensor unit 36 will be described.

  The adjustment of the determination level of the normal human sensor 36 is performed when a hot water storage type hot water heater is installed. Usually, when a hot water storage type hot water heater is installed, it has a test operation mode for removing air or the like intervening in the piping of the hot water storage type hot water heater, and the operation unit is operated in accordance with instructions displayed on the display unit 35 of the bathroom remote control 32. By operating 34, the installer can execute the trial operation mode, and is performing a trial operation when the hot water storage hot water heater is installed.

  Therefore, in the first embodiment, a step of adjusting the determination level of the human sensor unit 36 is put in the test operation mode. That is, if the step of adjusting the determination level of the human sensor unit 36 is included in the instruction content displayed on the display unit 35 during the test run and the step of adjusting the determination level is not completed, the next step may be taken. I am trying not to. As a result, the user does not need to set himself / herself after the hot water storage type hot water heater is installed, and the user does not feel bothered by the user.

  In addition, after the installation contractor installs and executes a trial run, if the human sensor 36 does not function as the user desires, the user can set it. However, if the user can easily change the determination level by operating it, the determination level of the human sensor unit 36 may change without notice when the user casually touches the operation unit 34. unknown.

Therefore, in the first embodiment, the determination level can be changed by specially operating the operation unit 34. The special operation refers to an operation that is not performed by the normal operation method of the operation unit 34, for example, an operation method that is not performed unless the operation manual is viewed. . In the first embodiment, the mode is changed to a mode in which the determination level can be changed by simultaneously pressing the UP switch and the DOWN switch for 10 seconds. In this case, since the user knows that the UP switch and the DOWN switch are normally contradictory switches, the UP switch and the DOWN switch are hardly pressed at the same time for 10 seconds in normal operation. Taken as an example of operation. The special operation is not limited to this, and there is no problem with other operation methods.

  FIG. 2 is a flowchart for changing the determination level of the present invention.

  First, in STEP001, it is determined whether the user has performed a special operation. In the first embodiment, as a special operation, the UP switch and the DOWN switch are simultaneously pressed for 10 seconds to determine whether or not there is a special operation. When there is a special operation, a determination level change screen is displayed on the display unit 35, and the process proceeds to STEP002. On the other hand, if there is no special operation, the process returns to the beginning. Since the display unit 35 displays that the determination level can be changed with the UP switch or the DOWN switch, the user is prompted to press the UP switch or the DOWN switch to change the determination level.

  Next, in STEP002, it is determined whether or not the UP switch has been operated. If the UP switch is operated, the process proceeds to STEP 004, and the determination level is increased by (+1), and the process proceeds to STEP 006. That is, the reaction sensitivity of the human sensor unit 36 is increased. If the UP switch has not been operated, the process proceeds to STEP 003 and it is determined whether or not the DOWN switch has been operated. If the operation of the DOWN switch is correct, the process proceeds to STEP 005 and the determination level is set to (−1). That is, the reaction sensitivity of the human sensor unit 36 is lowered. If there is no operation of the DOWN switch, the process proceeds to STEP006.

  Next, when proceeding to STEP 006, the display unit 35 displays a message prompting the user to move to a desired location. For example, “Entering detection is performed with a human sensor after 5 seconds” is displayed, and during this time, the user moves in the bathroom to a place where the user wants to detect. For example, when it is desired to detect the human body with the human sensor unit 36 when entering the bathroom entrance, it is confirmed whether the human body is detected by moving to the bathroom entrance during this time. If a human body is detected, the process proceeds to STEP007. If no human body is detected, the process proceeds to STEP009.

  In STEP007, “1” indicating that a human body has been detected is displayed on the display unit 35, and “0” indicating that a human body has not been detected is displayed in STEP009. This display is not limited to “0” and “1”, and may be indicated by character information such as “detected” or “not detected”. By including such steps, the installer or the user can visually confirm. Then, after STEP007 and STEP009, the process proceeds to STEP008 and STEP010, respectively.

  In STEP008, a buzzer sound is emitted from a speaker provided in the bathroom remote control 32, and in STEP010, a buzzer sound is not sounded. By including such a step, the installer or the user can confirm it audibly. After STEP 008 and STEP 010, both proceed to STEP 011.

  In STEP 011, the determination level set in the storage means for storing the determination level of the human sensor unit is stored, and the process proceeds to STEP 012. In STEP 012, a message for confirming whether or not to end the determination level setting is displayed on the display unit 35 to prompt the user to select “Yes” or “No”. If the user selects “Yes”, the determination level setting ends, and the display unit 35 returns to the normal screen. If “No” is selected, the process returns to STEP 002 to set the determination level again.

Alternatively, in STEP 012, a message is displayed on the display unit 35 in order to confirm whether or not the setting of the determination level is finished. However, in STEP 011, if a certain period of time has passed without any UP / DOWN switch operation, the nonvolatile memory The changed determination level may be written and stored in the storage unit of the memory, and the process may be terminated. If the UP / DOWN switch is operated, the process may return to STEP002.

  As described above, a mode for adjusting the determination level of the human sensor unit 36 can be provided and changed to a determination level suitable for the installation conditions. It is possible to avoid the heat-saving operation and not saving energy even when not present, and the quality can be improved. Further, by making it possible to adjust the determination level of the human sensor unit only when a special operation is performed on the operation unit 34, the user does not easily change it, and the usability is not impaired.

  Further, the hot water storage type water heater of the present invention is provided with a test run that is activated only once, and includes an adjustment mode step that can always switch the judgment level of the human sensor unit 36 at this time. Has been. Therefore, it is not necessary to perform special operations to adjust the determination level of the human sensor unit 36, and the human sensor unit 36 can be adjusted according to the installation situation, so that the convenience during construction can be improved. .

  And since it is not delivered to the user without adjustment at the time of construction, the hot water temperature of the hot water in the bathtub is made by stirring the cold water in the piping from the hot water supply body to the bathtub every predetermined time in the bathtub Since the user can enter the heat-retaining operation when entering the bathroom, the use of unnecessary heat for heating is eliminated, leading to improved energy savings and improved usability.

  Further, when the determination level of the human sensor unit 36 is switched by a special operation of the bathroom remote controller 32, the reaction state indicating whether or not the human sensor unit 36 has detected is displayed on the display unit 35. . In the embodiment described above, “1” is displayed on the hot water temperature number display portion of the display unit 35 when the human sensor 36 detects a person, and “0” when no person is detected. To display. Further, the bathroom remote controller 32 includes a speaker for notifying voice guidance, and a buzzer sound is notified when the human sensor unit 36 detects a person. With this configuration, the determination level can be visually or audibly confirmed while the determination level of the human sensor is set, so that the adjustment can be easily performed and the maintainability can be improved.

  As described above, the hot water storage type hot water heater according to the present invention may use a heat source such as an electric heater, oil, or gas in addition to using a heat pump as a heat source.

Configuration diagram of hot water storage type water heater in Embodiment 1 Flow chart of determination level change in Embodiment 1 Configuration diagram of a conventional hot water storage water heater

DESCRIPTION OF SYMBOLS 10 Hot water storage tank 11 Hot water supply pipe 12 Water supply pipe 15 Boiling pipe 16 Boiling pump 17 Heat source part 20 Curan 21 Shower head 22 Bathtub 26 Circulation pump 27 Reheating heat exchanger 29 Reheating pump 30 Bath thermistor 32 Bathroom remote control 34 Operation part 35 Display 36 Human sensor

Claims (5)

A hot water storage tank for storing hot water, a reheating heat exchanger for exchanging heat between the hot water in the bathtub and the hot water in the hot water storage tank, a circulation pump for sending the hot water in the bathtub to the reheating heat exchanger, and hot water supply A bathroom remote controller having an operation unit for setting temperature and bath operation and a human sensor unit for determining whether or not a person is in the bathroom are provided in the bathroom remote controller. A hot water heater that starts a heat insulation operation of hot water in a bathtub when it is detected, and is configured to be able to set a judgment level of the human sensor unit by operating the operation unit, and to notify the bathroom remote controller of a sound A hot water storage type hot-water supply apparatus comprising a speaker, wherein the reaction state of the human sensor is notified by the speaker while the determination level of the human sensor is set . The hot water storage type hot water heater according to claim 1, further comprising storage means for storing a determination level of the human sensor unit. The hot water storage type hot water heater according to claim 1 or 2, wherein a step of setting a judgment level of the human sensor is incorporated in a step of a test operation mode performed when the hot water heater is installed. 4. The configuration according to claim 1, wherein when the determination level of the human sensor is set after the trial operation mode is completed, the operation level can be set by specially operating the operation unit. 5. Hot water storage water heater. The display unit for displaying a set temperature and an operation state on the bathroom remote controller, and displaying a reaction state of the human sensor on the display unit while setting a determination level of the human sensor. 5. A hot water storage type water heater according to any one of 1 to 4.