JP6065039B2 - Hot water supply control system - Google Patents

Description

  The present invention relates to a system for controlling a plurality of heat pump water heaters installed in a predetermined target area, each having a hot water storage tank.

  Conventionally, a heat pump type water heater as disclosed in Patent Document 1 is known. The water heater in Patent Document 1 includes a heat pump unit as a heating unit that heats water, and a tank unit that stores water heated by the heat pump unit. Below, the operation which heats water is called boiling operation.

  A plurality of water heaters according to Patent Document 1 are installed in an apartment house. In particular, in Patent Document 1, in order to suppress the total power consumption of all the water heaters in the apartment house, each water heater is set such that the water heater belongs to one of a plurality of groups. Control is performed to change the group of water heaters that perform the heating operation every unit time.

JP 2014-222130 A

  In Patent Document 1, which hot water heater belongs to which group is determined when the hot water heater is installed, or is automatically changed. Then, the user is in a state where it is not possible to grasp which group the hot water heater used by the user belongs to and when to perform the heating operation.

  On the other hand, for the user, for example, depending on the schedule of the visitor, the amount of heated water used may increase temporarily, or the time period during which much heated water is used may differ from other days. You may feel anxious about the lack of water. Then, it is assumed that the desired execution time of the boiling operation by the user changes according to the situation of the user who uses the water heater.

  This invention is made | formed in view of this point, The objective is that a heat pump water heater performs a boiling operation at the time which a user desires as much as possible.

  The first invention controls a plurality of heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) Installed in a predetermined target area (15), each having a hot water storage tank (75). A hot water supply control system comprising a plurality of heat pump water heaters (60a, 60b, 60c, 60d) such that the amount of power supplied from the commercial power source (10) to the target area (15) is less than or equal to a reference power amount (Wu). , 60e,...), By selecting the target water heater for the boiling operation in each reference time zone (ts), each of the heat pump water heaters (60a, 60b, 60c, 60d, 60e,.・ The determination unit (46) for determining the operation schedule of the heating operation in () and the request to change the operation schedule for any of the heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) The accepting part (86) that can be accepted from and the accepting part (86) accepts the change request If the change target water heater that is the heat pump water heater (60a, 60b, 60c, 60d, 60e,...) Corresponding to the change request performs the boiling operation, the first scheduled time zone is set. An update unit (47) that updates the operation schedule by changing to a second scheduled time zone that is different from the time zone, and the heat pump water heaters (60a, 60b, 60c, 60d, 60e, ...) is provided with an operation command section (48) for executing a boiling operation.

  Here, in which reference time zone (ts) each heat pump water heater (60a, 60b, 60c, 60d, 60e, ...) performs boiling operation, each heat pump water heater (60a, 60b, 60c, 60d, 60e,...)). If there is a request from the user to change the operation schedule for a water heater to be changed that is an arbitrary heat pump water heater (60a, 60b, 60c, 60d, 60e,...), The heat pump water heater (60a, 60b , 60c, 60d, 60e, ...) changed the reference time zone (ts) (first scheduled time zone) for boiling operation to another reference time zone (ts) (second scheduled time zone) Control is performed. That is, the scheduled time zone of the heating operation of the change target water heater is changed. Therefore, the change target water heater can perform a boiling operation at a time desired by the user as much as possible.

  According to a second invention, in the first invention, the change request includes a priority request that the change target water heater performs a boiling operation in the second scheduled time zone earlier than the first scheduled time zone, Is a hot water supply control system.

  A priority request | requirement is a request | requirement of raising the priority of the boiling operation in a change object water heater. Here, the heat pump water heaters (60a, 60b, 60c, 60d, 60e, ...) that have been requested by the user in preference to the reference time zone (ts) (first scheduled time zone) originally planned The boiling operation can be performed in the early reference time zone (ts) (second scheduled time zone).

  According to a third aspect of the present invention, there is provided the hot water supply control system according to the second aspect, wherein the change request further includes an urgent request that the change target water heater immediately performs a boiling operation.

  The urgent request is a request for increasing the priority of the boiling operation in the change target water heater, and in particular, a request for immediately boiling the change target water heater. Here, the heat pump water heater (60a, 60b, 60c, 60d, 60e,...) That was urgently requested by the user is not the originally scheduled reference time zone (ts) (first scheduled time), The boiling operation can be performed in the reference time zone (ts) (second scheduled time zone) immediately after the emergency request.

  According to a fourth invention, in the second invention or the third invention, a plurality of the heat pump water heaters including the change target water heater are included in the operation target water heater that performs the boiling operation in the second scheduled time zone. The renewal unit (47) selects a predetermined number of the heat pump water heaters from the operation target water heaters that perform the boiling operation in the second scheduled time period in the order of lower priority, Is excluded from the operation target water heater in the second scheduled time zone.

  If the heating operation of the change target water heater is simply changed to the second scheduled time zone, the operation target water heater in the second scheduled time zone is already scheduled to be heated in the second scheduled time zone before the change. In addition to the other heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) That have been changed, the change-target water heater is applicable. Then, the total power consumption amount of the heat pump water heater (60a, 60b, 60c, 60d, 60e,...) In the second scheduled time zone increases. However, here, the control is performed to exclude the heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) Having a low priority from the operation target water heaters in the second scheduled time zone. Thereby, the raise of the total value of the power consumption of the heat pump water heater (60a, 60b, 60c, 60d, 60e, ...) in the second scheduled time zone can be suppressed.

According to a fifth invention, in any one of the first to fourth inventions, the change request includes the change target water heater in the second scheduled time zone earlier than the first scheduled time zone. A request selection display unit that includes a priority request for performing a boiling operation and an emergency request that the change target water heater immediately performs a boiling operation, and displays the priority request or the emergency request in a selectable manner. (86),
Is a hot water supply control system.

  Accordingly, the user can make a priority request for raising the priority of the boiling operation in any heat pump water heater (60a, 60b, 60c, 60d, 60e,...) Or any heat pump water heater (60a, An emergency request to immediately boil 60b, 60c, 60d, 60e,...) Can be instructed via the reception unit (86). Therefore, the hot water supply control system (40) can cause the heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) To perform a boiling operation according to the user's wishes.

  According to a sixth invention, in any one of the first to fifth inventions, the heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) Are communicably connected. A schedule display unit (86) for displaying the operation schedule in the connected heat pump water heater (60a, 60b, 60c, 60d, 60e,...), And the schedule display unit (86) The hot water supply control system is characterized in that the operation schedule to be displayed is changed in accordance with the operation of updating the operation schedule by the update unit (47).

  Thereby, the user using each heat pump water heater (60a, 60b, 60c, 60d, 60e,...) Can grasp the latest operation schedule from the corresponding schedule display section (86). Therefore, the user can confirm whether the boiling operation is performed in a desired time zone from the latest operation schedule.

  According to the first aspect, the change-target water heater can perform the boiling operation at the time desired by the user as much as possible.

  According to the second invention, the heat pump water heater (60a, 60b, 60c, 60d, 60e,...) That has been requested by the user has the reference time zone (ts) that was initially scheduled (first schedule). The boiling operation can be performed in a reference time zone (ts) (second scheduled time zone) earlier than the time zone.

  According to the third invention, the heat pump water heater (60a, 60b, 60c, 60d, 60e,...) Requested by the user in an urgent manner is the reference time zone (ts) (first schedule) The boiling operation can be performed not in (time) but in the reference time zone (ts) (second scheduled time zone) immediately after the emergency request.

  According to the fourth invention, it is possible to suppress an increase in the total power consumption amount of the heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) In the second scheduled time zone.

  According to the fifth aspect of the invention, the hot water supply control system (40) can cause the heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) To perform a boiling operation according to the user's wishes. it can.

  According to the sixth aspect, the user can confirm whether the boiling operation is performed in the desired time zone from the latest operation schedule.

FIG. 1 is a schematic configuration diagram of an apartment house provided with a hot water supply control system and a plurality of heat pump water heaters according to the present embodiment. FIG. 2 is a schematic diagram showing the hot water supply control system of FIG. 1 in a more simplified manner. FIG. 3 is a schematic configuration diagram of each heat pump water heater. FIG. 4 is a diagram schematically showing the configuration of the hot water supply control system. Fig. 5 shows the predicted power consumption (y (n)) for each evaluation time zone of other electrical equipment installed in the apartment and the amount of power (ΔW) that can be used for the heating operation of the heat pump water heater. It is a graph which shows. FIG. 6 is a diagram for explaining the prioritization of the boiling operation priority. FIG. 7 is an example of a normal screen displayed on the touch panel. FIG. 8 is an example of an operation schedule screen displayed on the touch panel. FIG. 9 is an example of a warning screen displayed on the touch panel. FIG. 10 is a diagram for explaining the flow of the control operation of the boiling operation performed by the hot water supply control system.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following embodiments are essentially preferable examples, and are not intended to limit the scope of the present invention, its application, or its use.

<Embodiment>
<Overview>
In the apartment house (15) of FIG. 1 and FIG. 2 (corresponding to a predetermined target area), for example, 100 dwelling units (15a, 15b, 15c, 15d, 15e,...) Are provided. Each dwelling unit (15a, 15b, 15c, 15d, 15e,...) Is provided with one heat pump water heater (60a, 60b, 60c, 60d, 60e,...).

  Here, the power distribution system (20) of the apartment house (15) will be described with reference to FIG. In addition, in FIG. 1, two dwelling units (15a, 15b, ...) are illustrated and the connection state of the various apparatus provided in the inside and a peripheral device is represented. Other dwelling units (15c, 15d, 15e,...) Also have the same configuration as FIG.

  The distribution system (20) is provided with a receiving / transforming facility (21). The substation equipment (21) is connected to the commercial power supply (10) via the trunk line (22), and is connected to each dwelling unit (15a, 15b, 15c, 15d, 15e, ...) via the branch line (23). It is connected to the electrical panel (24a, 24b, ...). The power receiving / transforming equipment (21) is also connected to an electrical appliance (for example, a lighting fixture in a hallway) installed in the shared section (16). For example, when receiving high-voltage power of 6600V from the commercial power source (10), the power receiving / transforming equipment (21) steps down the voltage to 100V or 200V to each dwelling unit (15a, 15b, 15c, 15d, 15e, ... ). Each distribution unit (15a, 15b, 15c, 15d, 15e, ...) has a heat pump water heater (60a, 60b, 60c, 60d, 60e, ...) on the distribution board (24a, 24b, ...). ) And electrical appliances (65a, 65b,...) Other than the heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) Are connected.

  The electric appliances (65a, 65b,...) Are not shown, but include air conditioners, refrigerators, washing machines, electromagnetic cookers, lighting fixtures, and the like. In addition, an electric appliance (65a, 65b, ...) means what operate | moves by supplying electric power from the power distribution system (20) of an apartment house (15). Accordingly, appliances that operate in a state where they are disconnected from the power distribution system (20) using, for example, dry batteries as a power source are not included in the other electrical appliances (65a, 65b,...).

  As shown in FIGS. 1 and 2, the hot water supply control system (40) controls a plurality of heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) Installed in the apartment house (15). System. The hot water supply control system (40) includes a central server (42) installed outside the apartment house (15).

  The central server (42) is connected to the backbone watt-hour meter (35) and the optical line terminal devices (34a, 34b,...) Via the communication network (30). One core electricity meter (35) is installed corresponding to one apartment house (15). The main electricity meter (35) is installed on the main line (22) and measures the amount of power supplied from the commercial power supply (10) to the apartment house (15) (that is, the power consumption of the entire apartment house (15)). To do. Each of the optical line terminators (34a, 34b,...) Has a corresponding router (33a, 33b, 33c, 33d, 33e,...), HUB (31a, 31b,...), Communication adapter (32a , 32b, 32c, 32d, 32e,...) To the heat pump water heater (60a, 60b, 60c, 60d, 60e,...). Each HUB (31a, 31b,...) Is further connected with an individual watt hour meter (36a, 36b,...). The individual watt hour meter (36a, 36b, ...) consists of a distribution board (24a, 24b, ...) and a heat pump water heater (15a, 15b, 15c, 15d, 15e, ...) and a heat pump water heater ( 60a, 60b, 60c, 60d, 60e,...)). Individual watt hour meter (36a, 36b, ...) is a heat pump water heater (60a, 60b, 60c, 60d, 60e) in the dwelling unit (15a, 15b, 15c, 15d, 15e, ...) ,...) Is measured.

  The hot water supply control system (40) predicts the power consumption of the heat pump water heater (60a, 60b, 60c, 60d, 60e,...) And controls the heating operation. The configuration and operation will be described later. To do.

<Heat pump water heater>
-Constitution-
Here, the configuration of the heat pump water heater (60a, 60b, 60c, 60d, 60e,...) Will be described. Each heat pump water heater (60a, 60b, 60c, 60d, 60e,...) Has the same configuration.

  As shown in FIGS. 2 and 3, each heat pump water heater (60a, 60b, 60c, 60d, 60e,...) Has a refrigerant circuit (70) and a hot water storage tank (75). The refrigerant circuit (70) performs a vapor compression refrigerant cycle. As shown in FIG. 3, the refrigerant circuit (70) includes a compressor (71), a water heat exchanger (72), an expansion valve (73), and an air heat exchanger ( 74) is composed of closed circuits connected by piping in order.

  The compressor (71) is a rotary or scroll type hermetic compressor. The water heat exchanger (72) has a primary channel (72a) to which the refrigerant circuit (70) is connected and a secondary channel (72b) to which the water circuit (76) is connected. The water heat exchanger (72) performs heat exchange between the water flowing through the secondary channel (72b) and the refrigerant flowing through the primary channel (72a). The expansion valve (73) is a so-called electronic expansion valve and depressurizes the refrigerant filled in the refrigerant circuit (70). The air heat exchanger (74) exchanges heat between the refrigerant flowing through the refrigerant circuit (70) and outdoor air supplied by an outdoor fan (not shown).

  The hot water storage tank (75) is a cylindrical container installed in a standing state. The volume of the hot water storage tank (75) is, for example, about 300 to 500 liters. A water circuit (76) is connected to the hot water storage tank (75). One end of the water circuit (76) is connected near the lower end of the hot water storage tank (75), and the other end is connected near the upper end of the hot water storage tank (75). The water circuit (76) is connected to the secondary side flow path (72b) of the water heat exchanger (72) and the pump (77). The pump (77) is installed on the upstream side of the water heat exchanger (72).

  The hot water storage tank (75) is connected to a water supply pipe (78) and a hot water discharge pipe (79). The water supply pipe (78) is connected to the vicinity of the lower end of the hot water storage tank (75), and supplies tap water to the hot water storage tank (75). The hot water discharge pipe (79) is connected to the vicinity of the upper end of the hot water storage tank (75), and sends hot water in the hot water storage tank (75) toward a hot water tap, a bathtub, or the like.

  The hot water storage tank (75) is provided with six temperature sensors (80 to 85). The temperature sensors (80 to 85) are arranged at equal intervals in the vertical direction of the hot water storage tank (75). Specifically, the temperature sensor (80) is installed at the upper end of the hot water storage tank (75), and the temperature sensor (85) is installed at the lower end of the hot water storage tank (75).

―Boiling operation―
The heat pump water heater (60a, 60b, 60c, 60d, 60e,...) Having the above-described configuration generates hot water by heating the water in the hot water storage tank (75), and then the hot water is again stored in the hot water storage tank ( Perform the operation to return to 75), that is, the boiling operation. During the boiling operation, the compressor (71) and the pump (77) operate.

  During the boiling operation, the refrigerant circulates in the refrigerant circuit (70) and a refrigeration cycle is performed. Specifically, the refrigerant discharged from the compressor (71) flows into the primary flow path (72a) of the water heat exchanger (72) and dissipates heat to the water flowing through the secondary flow path (72b). The refrigerant after heat dissipation expands when passing through the expansion valve (73), then flows into the air heat exchanger (74), absorbs heat from the outdoor air, and evaporates. The refrigerant that has passed through the air heat exchanger (74) is sucked into the compressor (71) and compressed.

  During the boiling operation, water flows through the water circuit (76). The pump (77) sucks in water at a relatively low temperature (for example, about 20 ° C) existing at the bottom of the hot water storage tank (75) and discharges it toward the secondary flow path (72b) of the water heat exchanger (72). To do. The water that has flowed into the secondary flow path (72b) of the water heat exchanger (72) is heated by the refrigerant flowing through the primary flow path (72a) and is heated to a relatively high temperature (for example, about 80 ° C.) Become. The high temperature water that has flowed out of the water heat exchanger (72) is supplied to the upper part of the hot water storage tank (75).

  In the hot water storage tank (75), the internal space is always filled with water. Therefore, when hot water is supplied to the hot water storage tank (75) by the boiling operation, in the hot water storage tank (75), the region where the high temperature water exists expands downward as the amount of the stored hot water increases. Therefore, the amount of hot water in the hot water storage tank (75) is detected according to the temperature distribution of the water in the vertical direction of the hot water storage tank (75) detected by each temperature sensor (80 to 85).

<Hot water supply control system>
In the hot water supply control system (40) according to the present embodiment, each heat pump water heater (60a, 60b, 60c, 60d, 60e) is controlled so that the amount of electric power supplied from the commercial power supply (10) to the apartment house (15) is suppressed. ,...) Is a system that realizes a reduction in power consumption by setting a time zone during which the heating operation should be performed. Furthermore, the hot water supply control system (40) according to the present embodiment is assumed that the amount of hot water used is larger than usual or the time zone in which much hot water is used differs from usual due to, for example, a sudden visitor. In order to be prepared, the specification is such that it can respond to the user's wishes while realizing a reduction in power consumption.

  Below, the structure of such a hot water supply control system (40) is demonstrated using FIGS.

  As shown in FIG. 4, the hot water supply control system (40) mainly includes an overall control unit (43), a water heater side control unit (50), a touch panel corresponding to a reception unit, a request selection display unit, and a schedule display unit. (86). One central control unit (43) is provided in the central server (42), and the hot water heater side control unit (50) and the touch panel (86) are heat pump water heaters (60a, 60b, 60c, 60d, 60e). ,...) Are provided in correspondence with each.

−General control unit−
The overall control unit (43) includes a memory, a CPU, and the like, and comprehensively controls a plurality of heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) In the apartment house (15). The overall control unit (43) includes a communication state determination unit (44), a power consumption prediction unit (45), a heating target selection unit (46) corresponding to a determination unit, and a heating target update unit ( 47) and the operation command section (48).

-Communication state determination unit-
The communication status determination unit (44) communicates with each heat pump water heater (60a, 60b, 60c, 60d, 60e, ...) in each dwelling unit (15a, 15b, 15c, 15d, 15e, ...). The state confirmation operation and the storage operation of the measurement results of each watt-hour meter (35, 36a, 36b,...) In the memory are performed.

  In particular, in the communication state confirmation operation, the communication state determination unit (44) communicates with the water heater side control unit (50) of each heat pump water heater (60a, 60b, 60c, 60d, 60e,...). A response request for checking the status is transmitted (polling operation). When a predetermined communication interval has elapsed since the response request was sent, the response to the response request is sent to the water heater side controller (50) of any heat pump water heater (60a, 60b, 60c, 60d, 60e, ...) The communication state determination unit (44) determines that communication with the hot water heater side control unit (50) is normal at this time. These operations are performed between the overall control unit (43) and each water heater side control unit (50) at predetermined communication intervals. That is, the hot water heater side control unit (50) transmits a response to the central server (42) side at a timing when a predetermined communication interval has elapsed after receiving the response request from the communication state determination unit (44). The communication state determination unit (44) receives the response from the water heater side control unit (50), and at the timing when a predetermined communication interval has passed, each heat pump water heater (60a, 60b, 60c, 60d, 60e, ..)) To the water heater side control unit (50).

  When there is a water heater side control unit (50) for which a response has not been transmitted when a predetermined communication interval has elapsed since the transmission of the response request, the communication state determination unit (44) Start counting the number of times the response from (50) has not been received. When the number of times that the number of times is counted continuously reaches, for example, three times, the communication state determination unit (44) determines the heat pump water heater (60a, 60b, 60c, 60d, 60e,.・ ・) The hot water heater side controller (50) judges that communication is impossible and clears the number of times. The heat pump water heaters (60a, 60b, 60c, 60d, 60e, ...) corresponding to the non-communication hot water heater side control unit (50) are controlled at least as long as communication is not possible. It is excluded from the following various control objects by the unit (43).

  An example of the predetermined communication interval is 5 minutes.

-Power consumption prediction part-
The power consumption prediction unit (45) evaluates the total power consumption of other electrical appliances (65a, 65b, ...) in the apartment house (15) from the current time to the point of 24 hours ahead. Predict every time zone (te). In FIG. 5, the predicted value for each evaluation time zone (te) of the total value of the power consumption of other electric appliances (65a, 65b,...) Is expressed as “y (1), y (2), y”. (3), y (4), ... ”.

  The evaluation time zone (te) is set longer than the predetermined communication interval, for example, 30 minutes.

  At the time of this prediction, the power consumption amount prediction unit (45) uses the measurement result of each watt hour meter (35, 36a, 36b,...). For example, the power consumption prediction unit (45) performs an operation for subtracting the total value of all the measured values of the individual watt-hour meters (36a, 36b,...) From the measured value of the core watt-hour meter (35). This is done for each measured value of the band (te). The measured value of the main electricity meter (35) is the actual value of the heat pump water heater (60a, 60b, 60c, 60d, 60e, ...) of each dwelling unit (15a, 15b, 15c, 15d, 15e, ...) Therefore, the above subtraction result is the actual power consumption for every evaluation time zone (te) of all other appliances (65a, 65b, ...) installed in the apartment house (15). It corresponds to. From the subtraction result, the power consumption forecasting unit (45) takes into account the day characteristics such as weekdays and holidays, and all other electrical appliances (65a, 65b, ...) are 24 hours ahead of the current time. The electric energy “y (1), y (2), y (3), y (4),...” Predicted to be consumed for each evaluation time period (te) is obtained.

  Further, the power consumption prediction unit (45) calculates the total power consumption of all the heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) In the apartment house (15) from the current time. Predict every evaluation time zone (te) up to the point in time ahead. At the time of this prediction, the power consumption prediction unit (45) takes 24 hours from the present time, considering the daily characteristics, etc. from the total value of all measured values of the individual energy meters (36a, 36b,...). By the time, all the heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) Are estimated to consume electric power that is expected to be consumed for each evaluation time zone (te).

-Boiling target selection section-
The boiling target selection unit (46) sets the upper limit electric energy (Wu) that is the reference electric energy based on the above two prediction results of the electric energy consumption prediction unit (45), and sets the upper limit electric energy (Wu). Based on this, the operation target hot water heater (60a, 60b, 60c, 60d, 60e,...) In each heat pump water heater (60a, 60b, 60e,...) Is determined.

  Specifically, the boiling target selection unit (46) sums the predicted power consumption values of all heat pump water heaters (60a, 60b, 60c, 60d, 60e ...) for each evaluation time zone (te). In addition, the predicted electric power consumption values “y (1), y (2), y (3), y () for all other electrical appliances (65a, 65b,...) For each evaluation time period (te). 4), ... ”is added up. The boiling target selection unit (46) further adds these two total values and obtains an average value for each evaluation time zone (te) from the result. Next, the boiling target selecting unit (46) predicts “y (1), y (2) for all the electric appliances (65a, 65b,...) For each evaluation time zone (te). ), Y (3), y (4),... The boiling target selection unit (46) sets the larger one of the maximum value and the average value as the upper limit electric energy (Wu) that is the reference electric energy. In FIG. 5, as an example, the maximum value that is the predicted value of the power consumption of all the other electrical appliances (65a, 65b,...) Between 18:30 and 19:00 is the upper limit power (Wu). The case where it is set as is shown.

  Next, the boiling target selection unit (46) determines the predicted value “y (1), y (2), y (3), y (4),.・ When the maximum value from “” (predicted value “y (1)” in FIG. 5) is extracted, the power difference (ΔW) between the upper limit electric energy (Wu) and the extracted value “y (1)” is calculated. Ask. The calculated power difference (ΔW) is the amount of power that can be used by the heat pump water heater (60a, 60b, 60c, 60d, 60e, ...) for boiling operation during the reference time zone (ts) It corresponds to.

  The reference time zone (ts) is longer than the predetermined communication interval (5 minutes) and the evaluation time zone (te) (30 minutes), and is determined to be an integral multiple of the evaluation time zone (te) as an example. FIG. 5 shows an example in which the reference time zone (ts) is set to about 2 hours, which is about four times the evaluation time zone (te).

  The heating target selection unit (46) is configured to allow the heating pump water heater (60a, 60a, 60a, 60b) to permit the heating operation based on the power difference (ΔW) described above and the power consumption per unit time of one heat pump water heater. 60b, 60c, 60d, 60e, ...) are determined. Then, the heating target selection unit (46) is the heat pump water heaters (60a, 60b, 60b, 60c, 60d, 60e,...) For the number of heat pump water heaters (60a, 60b, 60e,. , 60c, 60d, 60e,...) And this is selected as a water heater to be operated in the boiling operation. As a result, the water heater to be operated can be supplied to the housing complex (15) from the plurality of heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) In the housing complex (15). The amount of power from the power source (10) is selected to be equal to or lower than the upper limit power amount (Wu).

  As described above, in the selection operation according to the present embodiment, the operation target water heater to be heated is determined with the reference time zone (ts) as one unit. In one selection operation, the hot water heater to be operated is selected for each reference time zone (ts) by dividing the current time up to 24 hours ahead for each reference time zone (ts). In this way, the operation schedule indicating which reference time zone (ts) to perform boiling operation from the current time to 24 hours ahead is the heat pump water heater (60a, 60b, 60c, 60d, 60e, ...・ It is decided every time.

  The operation schedule of each heat pump water heater (60a, 60b, 60c, 60d, 60e, ...) is reviewed by the heating target selection unit (46) for each reference time zone (ts) and operated as necessary. The schedule is recreated. This is because the hot water in the hot water storage tank (75) is used by the user, and the order in which the hot water storage amount is small may change every moment.

-Heating target update unit-
When an operation schedule change request for any heat pump water heater (60a, 60b, 60c, 60d, 60e,...) Is made by the user via the touch panel (86), the boiling target update unit (47) Then, the operation schedule of the heat pump water heater (60a, 60b, 60c, 60d, 60e,...) Requested to be changed is updated.

  Specifically, when a change request is made by the user via the touch panel (86), the heating target update unit (47) is configured to respond to the change request by a heat pump water heater (60a, 60b, 60c, 60d, 60e, ...) is determined to be the water heater to be changed. The boiling target update unit (47) sets the first scheduled time zone, which is set in the operation schedule as the reference time zone (ts) for the change target water heater to perform the boiling operation, as the first scheduled time zone. Change to the second scheduled time zone which is a different reference time zone (ts).

  As an example, there is a request that the heating pump hot water heater (60a) is heated earlier than the first scheduled time zone through the touch panel (86) connected to the heat pump hot water heater (60a). It is assumed that one scheduled time zone is a reference time zone (ts) from 20:00 to 22:00. The boiling target update unit (47) determines that the heat pump water heater (60a) is the target hot water heater to be changed, and sets the time zone for the heating operation of the heat pump water heater (60a) as a reference time zone between 20:00 and 22:00 ( ts) (first scheduled time zone) is changed to a reference time zone (ts) (second scheduled time zone) from 14:00 to 16:00. Thereby, the heat pump water heater (60a) is changed from the operation target water heater in the first scheduled time zone to the operation target water heater in the second scheduled time zone.

  Furthermore, the boiling target update unit (47) operates the heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) Other than the change target water heater when changing the operation schedule of the change target water heater. Change the schedule accordingly. Depending on the number of operating water heaters and the heat storage status in the time zone to be changed (second scheduled time zone), the total power consumption of all the operating water heaters in the second scheduled time zone is the power difference (ΔW). As a result, there is a possibility that the total value of the power consumption of the entire apartment house (15) in the second scheduled time zone may exceed the upper limit power consumption (Wu). If the total value of the power consumption of the apartment house (15) as a whole exceeds the upper limit power consumption (Wu), it is difficult to say that it is preferable because the electricity charge increases.

  Therefore, the heating target renewal unit (47) is configured so that the total power consumption of the entire apartment house (15) in the second scheduled time zone does not exceed the upper limit power (Wu). Judge the suitability of the target water heater. Specifically, in a state where a plurality of heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) Including the target water heater to be changed are selected as the water heaters to be operated in the second scheduled time zone. The boiling target update unit (47) arranges the operation target water heaters in the second scheduled time period in descending order of priority of the boiling operation as shown in FIG. The heating target update unit (47) selects a predetermined number of heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) From the operation target water heaters in ascending order of priority. Excluded from the water heaters to be operated during the scheduled time. FIG. 6 shows an example in which only the heat pump water heater with the lowest priority among the operation target water heaters is excluded from the operation target water heaters.

  Here, the priority is determined by the presence / absence of the hot water heater to be changed, the predicted value of the amount of hot water stored in the second scheduled time zone, and the like, and represents the necessity of preferentially performing the boiling operation.

  FIG. 6 shows, as an example, a case where the priority of the hot water heater to be changed is the highest, and the priority is higher as the predicted value of the hot water storage amount in the second scheduled time zone is smaller. Note that the priority ranking method for the heating operation is not limited to that shown in FIG. 6, and any method may be used. For example, for heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) That are predicted to have a very small amount of hot water storage and run out of hot water, the priority is higher than the water heater to be changed. In addition, the priority of the boiling operation may be ranked.

  Even if the scheduled time zone of the heating operation of the change target water heater is changed from the first scheduled time zone to the second scheduled time zone by the above-described operation of excluding the target hot water heater during the second scheduled time zone, The total power consumption amount of the apartment house (15) in the second scheduled time zone can be within the upper limit power amount (Wu).

-Operation command section-
The operation command unit (48) is configured so that each heat pump water heater (60a, 60b, 60c, 60c, 60c, 60c, 60c, 60c, 60c, 60c, 60c, 60c, 60c, 60c, 60c) is operated according to the operation schedule generated by the boiling target selection unit (46). 60d, 60e,...)) Perform boiling operation.

  For example, the operation command section (48) is individually determined in the operation schedule for each of the water heater side control sections (50) of the heat pump water heater (60a, 60b, 60c, 60d, 60e, ...). A command indicating that the boiling operation should be performed in the reference time zone (ts) is transmitted. In addition, when it becomes necessary to perform a sudden heating operation in the heat pump water heater (60a, 60b, 60c, 60d, 60e, ...), the operation command section (48) is the heat pump that is currently performing the boiling operation. A boiling operation stop command is transmitted to any one of the water heater side control units (50) of the water heaters (60a, 60b, 60c, 60d, 60e,...).

-Hot water heater side control section-
As shown in FIGS. 2 and 4, the water heater-side control unit (50) is mainly composed of a router (33a, 33b, 33c, 33d, 33e,...) And an HP control unit (51). It is provided corresponding to the heat pump water heater (60a, 60b, 60c, 60d, 60e,...). That is, the hot water heater side control unit (50) is communicably connected to the general control unit (43) by the router (33a, 33b, 33c, 33d, 33e,...), And the general control unit (43). The corresponding heat pump water heater (60a, 60b, 60c, 60d, 60e,...) Can be controlled on the basis of the operation command from.

  The HP controller (51) is provided in the corresponding heat pump water heater (60a, 60b, 60c, 60d, 60e,...). The HP control unit (51) includes a CPU, a memory, and the like, and functions as a hot water storage amount determination unit (52), a boiling operation control unit (53), and a screen control unit (54).

-Hot water storage volume determination section-
Based on the detection result of the temperature sensor (80 to 85) of the corresponding heat pump water heater (60a, 60b, 60c, 60d, 60e, ...), the hot water storage amount determination unit (52) 60b, 60c, 60d, 60e, ...) is determined. For example, in FIG. 3, when the condition of high-temperature water is defined as “50 degrees or more”, the hot water storage amount determination unit (52) determines the temperature sensor (80 to 85) where the detection result indicates 50 degrees or more. Know the amount of hot water stored.

-Boiling operation control part-
The boiling operation control unit (53) controls the corresponding heat pump water heater (60a, 60b, 60c, 60d, 60e,...) To perform the boiling operation or stop the boiling operation. . Specifically, when an instruction to perform the boiling operation is sent from the overall control unit (43), the boiling operation control unit (53) sends the corresponding heat pump water heater (60a, 60b, 60c, 600d). , 60e,...) Is heated for the reference time period (ts) (first scheduled time period) determined in the operation schedule. On the contrary, when a stop command for the boiling operation is sent from the general control unit (43), the boiling operation control unit (53) sends the corresponding heat pump water heater (60a, 60b, 60c, 60d, 60e,. Stop the boiling operation in response to.

-Screen control unit-
The screen control unit (54) performs control related to the corresponding touch panel (86). For example, the screen control unit (54) generates screen information to be displayed on the touch panel (86) and transmits the screen information to the touch panel (86). Further, the screen control unit (54) grasps the contents input by the user on the touch panel (86). The grasped contents are transmitted to the overall control unit (43) via the router (33a, 33b, 33c, 33d, 33e,...).

-Touch panel-
The touch panel (86) is communicably connected to the HP controller (51) of the corresponding heat pump water heater (60a, 60b, 60c, 60d, 60e, ...), and displays various screens associated with the screen information. It is possible to accept input by the user while displaying. The types of input that the touch panel (86) receives from the user include a request for changing the operation schedule of the corresponding heat pump water heater (60a, 60b, 60c, 60d, 60e), the heat pump water heater (60a, 60b, 60c, 60d, In addition to the amount of hot water stored in the hot water storage tank (75) of 60e,.

  Here, the operation schedule change request will be described. The change request according to the present embodiment includes a priority request and an emergency request. The priority request is a request that the change target water heater performs the boiling operation in the second scheduled time zone that is earlier than the first scheduled time zone, that is, a request that the priority of the boiling operation in the change target water heater increases. It is. The emergency request is a request that the boiling operation is performed in the second scheduled time period earlier than the first scheduled time period, as in the priority request, but is immediately heated for reasons such as feeling uneasy about the amount of stored hot water. This request is selected by the user when it is desired to execute the operation. Therefore, when the emergency request that the change target water heater immediately performs the boiling operation is selected, the priority of the boiling operation is higher than when the priority request is selected, and the change target water heater is selected when the priority request is selected. The boiling operation is performed in an earlier reference time zone (ts).

  Next, screen examples displayed on the touch panel (86) will be described with reference to FIGS. FIG. 7 shows a normal screen (sc1), FIG. 8 shows an operation schedule screen (sc2), and FIG. 9 shows a warning screen (sc3) related to the boiling operation.

  In FIGS. 7 to 9, the touch panel (86) is turned on, and four tabs of “a bath”, “tank”, “setting”, and “schedule” are displayed in a selectable manner in the upper part of the screen. ing.

  The normal screen (sc1) in FIG. 7 shows the hot water stored in the bathtub, the temperature of the shower, and the current hot water storage amount of the hot water storage tank (75).

  In the operation schedule screen (sc2) of FIG. 8, the “Schedule” tab is active, and the heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) Connected to the touch panel (86). The operation schedule is expressed in a graph form with the horizontal axis representing time and the vertical axis representing hot water storage volume. As an example, in FIG. 8, the boiling operation is scheduled to be performed from 20:00 to 22:00, the amount of hot water gradually increases from 20:00 to 22:00, and a relatively large amount of hot water is stored after 22:00. This means that the amount is constant.

  In particular, on the operation schedule screen (sc2) of FIG. 8, an OK button (bt21) and an operation schedule change button (bt22) are displayed selectably below the operation schedule graph. Next to the operation schedule change button (bt22), an input field (bt23) is displayed in which the user can input the boiling completion time desired when the operation schedule change button (bt22) is selected. The operation schedule change button (bt) corresponds to a button that displays either a priority request or an emergency request in a selectable manner according to the time input in the input field (bt23).

  When the OK button (bt21) is selected, the touch panel (86) switches the display screen from the operation schedule screen (sc2) to the normal screen (sc1).

  Operation with a time (for example, 14:00) that is different from the completion time (for example, 22:00) of the scheduled time zone of the boiling operation displayed on the operation schedule screen (sc2) being entered in the input field (bt23) When the schedule change button (bt22) is selected, the screen control unit (54) transmits a message to that effect to the overall control unit (43). The heating target update unit (47) of the overall control unit (43) is connected to the heat pump water heater (60a, 60b, 60c, 60d, 60e, etc.) corresponding to the touch panel (86) with the operation schedule change button (bt22) selected.・ ・ Update the operation schedule of all heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) So that the boiling operation of () is completed at the time entered in the input field (bt23). Try. When the update according to the user's request is completed, the updated operation schedule is sent to each of the corresponding touch panels (86) and redisplayed as shown in FIG.

  In the warning screen (sc3) in FIG. 9, although the operation schedule change button (bt22) is selected in FIG. 8, it is difficult to complete the boiling operation at the time entered in the input field (bt23). It is displayed when the update according to the request of was not possible. When the update according to the user's request is not possible, in the second scheduled time zone of the change destination, other heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) Because the amount of hot water storage is expected to be significantly lower, the priority of other heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) Must be made higher than the target water heater. As a result, considering that the power consumption of the entire apartment house (15) should be less than the upper limit electric energy (Wu), the scheduled time zone for the heating operation of the water heater to be changed is changed to the second scheduled time zone. It cannot be changed. For example, according to the predicted value of the hot water storage volume of other heat pump water heaters (60a, 60b, 60c, 60d, 60e, ...) that were originally the operation target water heaters in the second scheduled time zone, priority is given to the water heater. If the temperature is higher than the target hot water heater and therefore it is not possible to remove one of the hot water heaters from the target hot water heater, the target hot water heater is further changed to the target hot water heater for the second scheduled time zone. If added, the power consumption of the entire apartment house (15) will exceed the upper limit power consumption (Wu). In such a case, it becomes impossible to change the scheduled time zone of the hot water heater to be changed to the second scheduled time zone according to the user's desire.

  Therefore, the warning screen (sc3) in FIG. 9 displays a message indicating that the boiling operation cannot be completed at the time input in the input field (bt23) in FIG. Are displayed so that a return button (bt31) and an emergency boiling button (bt32) corresponding to an emergency request can be selected. When the return button (bt31) is selected, the operation schedule screen (sc2) in FIG. 8 is displayed again on the touch panel (86). At this time, the scheduled heating time zone of the heat pump water heater (60a, 60b, 60c, 60d, 60e, ...) connected to the touch panel (86) is not changed and remains in the first scheduled time zone. It becomes. When the emergency boiling button (bt32) is selected, the priority of the heating operation of the corresponding heat pump water heater (60a, 60b, 60c, 60d, 60e, ...) is the highest, and the heat pump water heater ( 60a, 60b, 60c, 60d, 60e,...)) Is immediately prepared for starting the boiling operation.

<Control operation of boiling operation>
Control operation of the boiling operation performed by the hot water supply control system (40) according to the present embodiment will be described with reference to FIG.

  As a premise, it is assumed that all the heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) Can communicate. The power consumption predicting unit (46) of the general control unit (43) included in the central server (42) is a heat pump water heater (15) in the apartment house (15) up to 24 hours ahead for each evaluation time zone (te). 60a, 60b, 60c, 60d, 60e, ...) The total value of all power consumption and the total power consumption of all other appliances (65a, 65b, ...) up to 24 hours ahead Assume that the values continue to be predicted. It is assumed that the hot water storage amount determination unit (52) of each hot water heater side control unit (50) constantly detects the hot water storage amount of the corresponding hot water storage tank (75).

  In step S1, the heating target selection unit (46) of the overall control unit (43) uses the prediction result of the power consumption prediction unit (45) to each reference time zone (ts from the current time to 24 hours ahead) ) Operation schedule showing which reference time zone (ts) each heat pump water heater (60a, 60b, 60c, 60d, 60e, ...) performs boiling operation by selecting the operation target water heater Create The operation command unit (48) causes each heat pump water heater (60a, 60b, 60c, 60d, 60e,...) To perform a boiling operation according to the created operation schedule.

  Specifically, when the current time is immediately before the start of each reference time zone (ts), the operation command unit (48) is the heat pump water heater (60a, 60b, 60c, 60d) , 60e,...) Is transmitted to the hot water heater side control unit (50). The water heater side controller (50) responds that the heating operation has been stopped after stopping the heating operation of the corresponding heat pump water heater (60a, 60b, 60c, 60d, 60e, ...). Is transmitted to the central server (42) side. After receiving the response, the operation command unit (48) on the central server (42) side receives the heat pump water heater (60a, 60b, 60c, 60d, 60e,...) Is transmitted to the hot water heater side control section (50). As a result, after the heat pump water heater (60a, 60b, 60c, 60d, 60e,...) That was the operation target water heater in the immediately preceding reference time zone (ts) has stopped boiling operation, a new reference time is set. Heat pump water heaters (60a, 60b, 60c, 60d, 60e, ...) that are the target water heaters in the band (ts) perform boiling operation, so consumption at the time of switching the reference time band (ts) A temporary increase in the amount of electric power can be prevented.

  In step S2, the driving schedule created in step S1 is transmitted to each corresponding touch panel (86). The touch panel (86) in which the “schedule” tab is activated by the operation of the user is shown in FIG. 8 as the operation schedule screen (sc2) of the corresponding heat pump water heater (60a, 60b, 60c, 60d, 60e,...). Display as shown.

  The user selects the operation schedule change button (bt22) by entering the completion time of the desired boiling operation in the input field (bt23) through one of the touch panels (86) displaying the operation schedule screen (sc2) (Yes in step S3). The time input in the input field (bt23) is earlier than the completion time of the reference time zone (ts) determined in step S1 (that is, the first scheduled time zone), but it is not necessary to perform the boiling operation immediately. If so, the screen controller (54) of the water heater-side controller (50) corresponding to the touch panel (86) determines that a priority request has been made by the user (Yes in step S4).

  In step S5, the boiling target update unit (47) of the overall control unit (43) attempts to update the operation schedule so that the boiling operation is completed as much as possible at the time input in the input field (bt23). At this time, the heating target update unit (47) not only changes the operation schedule of the water heater to be changed, but also other heat pump water heaters that are affected by changing the scheduled time zone of the heating operation of the change target water heater ( 60a, 60b, 60c, 60d, 60e,...) Are also tried to change the operation schedule. In particular, the heating target update unit (47) inputs the scheduled time zone of the heating operation of the heat pump water heater (change target water heater) corresponding to the touch panel (86) in step S3 from the first scheduled time zone. The time inputted in (bt23) is changed to the second scheduled time zone which is the completion time, and another heat pump water heater (60a, 60a, which has already been set as the operation target water heater in the second scheduled time zone in step S1. At least one of 60b, 60c, 60d, 60e, ...) is excluded from the operation target water heater.

  In the above update operation, the heat pump water heaters (60a, 60b, 60a, 60b, 60a, 60b, When the update of the operation schedule of 60c, 60d, 60e,... Is successfully completed (Yes in step S6), the updated operation schedule is transmitted to and displayed on each of the corresponding touch panels (86) (steps). S7).

  After step S7, unless any of the plurality of touch panels (86) accepts a request for changing the operation schedule, each hot water heater side control unit (50) responds according to the updated operation schedule. The heat pump water heater (60a, 60b, 60c, 60d, 60e,...) Is caused to perform a boiling operation (step S8).

  On the other hand, when the update according to the user's wishes cannot be performed in step S6 (No in step S6), the boiling target update unit (47) ends the update operation, and the screen control unit (54) The warning screen (sc3) of No. 9 is displayed on the touch panel (86) of Step S3 (touch panel (86) corresponding to the hot water heater to be changed) (Step S9).

  When the time input to the input field (bt23) in step S3 is a time that requires immediate boiling operation (No in step S4), or a warning displayed on the touch panel (86) in step S9 When the emergency boiling button (bt32) is selected from the screen (sc3), the water heater side control unit (50) determines that a priority request has been made by the user (Yes in step S10).

  In step S11, the boiling target updating unit (47) updates the operation schedule so that the boiling operation is started immediately. At this time, the heating target update unit (47) sets the priority of the hot water heater to be changed in the operation schedule to the highest priority, and sets the scheduled time zone of the hot water heater to be changed from the first scheduled time zone. To the scheduled time zone (second scheduled time zone) or the reference time zone (ts) including the current time. Further, the heating target update unit (47) also applies other heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) To the latest scheduled time zone (second schedule) already in step S1, for example. The operation schedule is updated by, for example, excluding at least one of the water heaters set as the operation target water heater in the time zone) from the operation target water heater.

  In addition, in step S11, when making the change target water heater perform a boiling operation in the middle of the reference time zone (ts) including the current time, another heat pump water heater (60a, 60a, It is preferable that after the operation of at least one of 60b, 60c, 60d, 60e,...) Is stopped, control for causing the water heater to be changed to perform a boiling operation is performed.

  Next, in step S12, the operation schedule updated in step S11 is transmitted to and displayed on each of the corresponding touch panels (86). In step S13, each water heater side control part (50) boils up to each corresponding heat pump water heater (60a, 60b, 60c, 60d, 60e, ...) according to the operation schedule updated in step S11. Run the operation.

<Effect>
In the present embodiment, which heat pump water heater (60a, 60b, 60c, 60d, 60e,...) Performs the boiling operation in which reference time zone (ts) depends on each heat pump water heater (60a, 60b, 60c, 60d, 60e,...)). If there is a request from the user to change the operation schedule for a water heater to be changed that is an arbitrary heat pump water heater (60a, 60b, 60c, 60d, 60e,...), The heat pump water heater (60a, 60b , 60c, 60d, 60e, ...) changed the reference time zone (ts) (first scheduled time zone) for boiling operation to another reference time zone (ts) (second scheduled time zone) Control is performed. That is, the scheduled time zone of the heating operation of the change target water heater is changed. Therefore, the change target water heater can perform a boiling operation at a time desired by the user as much as possible.

  Here, the change request includes a priority request that the change target water heater performs a boiling operation in a second scheduled time zone that is earlier than the first scheduled time zone. That is, the priority request is a request for increasing the priority of the boiling operation in the hot water heater to be changed. The heat pump water heaters (60a, 60b, 60c, 60d, 60e, ...) that have been requested by the user have a reference time earlier than the originally scheduled reference time zone (ts) (first scheduled time zone) The boiling operation can be performed in the zone (ts) (second scheduled time zone).

  The change request further includes an urgent request that the change target water heater immediately performs a boiling operation. That is, the emergency request is a request for raising the priority of the boiling operation in the change target water heater, and in particular, a request for immediately boiling the change water heater. The heat pump water heaters (60a, 60b, 60c, 60d, 60e, ...) that were urgently requested by the user are not based on the originally scheduled reference time zone (ts) (first scheduled time) but the urgent request The boiling operation can be performed in the reference time zone (ts) (second scheduled time zone) immediately after there is.

  By the way, when the heating operation of the change target water heater is simply changed to the second scheduled time zone, the operation target water heater in the second scheduled time zone is already heated in the second scheduled time zone before the change. In addition to the other planned heat pump water heaters (60a, 60b, 60c, 60d, 60e,...), The change target water heater is applicable. Then, the total power consumption amount of the heat pump water heater (60a, 60b, 60c, 60d, 60e,...) In the second scheduled time zone increases. However, in the present embodiment, control is performed to exclude heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) Having a low priority from the operation target water heaters in the second scheduled time period. Thereby, the raise of the total value of the power consumption of the heat pump water heater (60a, 60b, 60c, 60d, 60e, ...) in the second scheduled time zone can be suppressed.

  In addition, using the various buttons (bt22, bt32) and the input field (bt23) shown in FIGS. 8 and 9, the user can instruct a priority request or an emergency request via the touch panel (86). Therefore, the hot water supply control system (40) can cause the heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) To perform a boiling operation according to the user's wishes.

  Moreover, in this embodiment, the driving schedule displayed on a touch panel (86) is changed with the update operation of a driving schedule. Thereby, the user using each heat pump water heater (60a, 60b, 60c, 60d, 60e,...) Can grasp the latest operation schedule from the corresponding touch panel (86). Therefore, the user can confirm whether the boiling operation is performed in a desired time zone from the latest operation schedule.

<< Other Embodiments >>
About the said embodiment, it is good also as the following structures.

  The input unit that receives various instructions from the user, the schedule display unit that displays the operation schedule, and the request selection display unit that selectively displays the priority request or the emergency request are configured by one touch panel (86) as in the above embodiment. Instead, they may be configured separately, or may be configured separately in the input unit and the display unit.

  The display form of the operation schedule is not limited to the graph form as shown in FIG. 8, and may be any form as long as the user can grasp at least the scheduled time zone of the boiling operation.

  The display screen that displays the priority request and the urgent request in a selectable manner is not limited to FIGS. 8 and 9. The priority request and the emergency request may be displayed so as to be selectable on one screen, or a priority request key and an emergency request key may be physically provided instead of the display.

  In the above-described embodiment, an example has been described in which the scheduled time zone of the heating operation of the change target water heater is advanced with respect to the update of the operation schedule. However, the update of the operation schedule may include a case where the scheduled time zone of the heating operation of the change target water heater is changed to a second scheduled time zone that is later than the first scheduled time zone.

  In the above embodiment, regarding the update of the operation schedule, a predetermined number of heat pump water heaters are selected from the operation target water heaters that perform boiling operation in the second scheduled time period in order of priority, and this is the second schedule. Control was excluded from the water heaters to be operated in the time zone. However, even if the target hot water heater is included in the second scheduled time zone, the total power consumption of the entire apartment house (15) will not exceed the upper power limit (Wu) However, the above exclusion control may not be performed.

  The touch panel (86) does not necessarily have to change the operation schedule to be displayed in accordance with the update operation.

  In addition, the target area is not limited to a single apartment building (15), but is a combination of multiple apartment groups, a group of detached houses built densely in a specific area, and a combination of an apartment house and a detached house. Also good. The target area is a virtual area constructed by a plurality of selected houses when a plurality of houses are selected in advance from houses connected to the central server (42) via the communication network (30). May be a complex housing group.

  Further, the high-voltage collective power receiving means is not necessarily applied. When the commercial power and the generated power based on renewable energy are simply supplied to the target area, the hot water supply control system can be provided.

  As described above, the present invention is useful as a system for controlling a plurality of heat pump water heaters that are installed in a predetermined target area and each have a hot water storage tank.

15 Housing complex (target area)
40 Hot water supply control system
46 Boiling target selection section (determination section)
47 Heating target update unit (update unit)
48 Operation command section
60a, 60b, 60c, 60d, 60e, ... Heat pump water heater
75 Hot water storage tank
86 Touch panel (reception part, request selection display part, schedule display part)

Claims (6)

A hot water supply control system for controlling a plurality of heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) Each installed in a predetermined target area (15) and having a hot water storage tank (75). ,
A plurality of heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) So that the amount of power supplied from the commercial power source (10) to the target area (15) is less than the reference power amount (Wu). By selecting the target water heater for the heating operation in each reference time zone (ts) from among the above, the heating operation of each heat pump water heater (60a, 60b, 60c, 60d, 60e, ...) A determination unit (46) for determining an operation schedule;
A reception unit (86) capable of receiving from the user a request to change the operation schedule for any of the heat pump water heaters (60a, 60b, 60c, 60d, 60e, ...);
When the receiving unit (86) receives the change request, the change target water heater that is the heat pump water heater (60a, 60b, 60c, 60d, 60e,...) Corresponding to the change request is heated up. An update unit (47) for updating the operation schedule by changing the first scheduled time zone for performing the second scheduled time zone different from the first scheduled time zone;
A hot water supply control comprising an operation command unit (48) for causing each of the heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) To perform a boiling operation according to the updated operation schedule. system. In claim 1,
The hot water control system according to claim 1, wherein the change request includes a priority request that the water heater to be changed performs a boiling operation in the second scheduled time zone earlier than the first scheduled time zone. In claim 2,
The hot water supply control system, wherein the change request further includes an urgent request that the change target water heater immediately performs a boiling operation. In claim 2 or claim 3,
The operation target water heater that performs the boiling operation in the second scheduled time zone includes a plurality of the heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) Including the change target water heater. Have been selected
The update unit (47) is configured so that the heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) From the operation target water heaters that perform the boiling operation in the second scheduled time period in ascending order of priority. A hot water supply control system, wherein a predetermined number is selected and excluded from the operation target water heater in the second scheduled time zone. In any one of Claims 1-4,
The change request includes a priority request that the change target water heater performs a boiling operation in the second scheduled time period earlier than the first scheduled time period, and the change target water heater immediately performs a boiling operation. And an urgent request to do so,
A request selection display section (86) for selectively displaying the priority request or the emergency request;
A hot water supply control system, further comprising: In any one of Claims 1-5,
The heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) Are communicably connected to the heat pump water heaters (60a, 60b, 60c, 60d, 60e,...).・) Schedule display section (86) for displaying the above operation schedule in
Further comprising
The said schedule display part (86) changes the said operation schedule to display with the update operation | movement of the said operation schedule by the said update part (47), The hot water supply control system characterized by the above-mentioned.

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