JP2016176670A - Control device for water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control device for water heater capable of efficiently storing hot water in a hot water supply tank.SOLUTION: A control device 60 is the control device for a water heater 10 which includes: heat source units 11 for heating water taken in from a water supply line 14; a hot water supply tank 12 in which the water heated in the heat source units 11 is stored; and a hot water use unit 13 for allowing a user to use the hot water delivered from the hot water supply tank 12. The control device includes: a heat source control unit for allowing the heat source units 11 to perform a basic boiling operation and an additional boiling operation; a use record storage region for storing actual data of a use amount of the hot water used in the hot water use unit 13; and a calculation processing unit for determining a tank target hot water amount, which is a target amount of the hot water stored in the hot water supply tank 12, based on the actual data. The calculation processing unit determines the tank target hot water amount for each day of the week. Then, the heat source control unit allows the heat source units 11 to perform the basic boiling operation and/or additional boiling operation according to the tank target hot water amount determined by the calculation processing unit.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a control device for a water heater.

  Conventionally, in a water heater provided with a heat source unit and a hot water supply tank in which water heated by the heat source unit is stored, a basic boiling operation performed in a predetermined time zone and a time zone other than the predetermined time zone are executed. There is one that causes the heat source unit to perform an additional boiling operation. For example, in a water heater disclosed in Patent Document 1 (Japanese Patent Application Laid-Open No. 2013-87961), a boiling operation performed in a midnight time zone as a predetermined time zone and a daytime as a time zone other than the predetermined time zone A heating pump heating means as a heat source unit is made to perform the boiling increase operation performed in the time zone.

  Here, the boiling-up operation of the water heater disclosed in Patent Document 1 is an operation for boiling up the amount of heat that cannot be boiled up by the boiling-up operation. And in order to suppress the heat radiation from the hot water tank caused by the heating operation being performed faster than necessary, the timing for starting the heating operation according to the degree of variation in the amount of heat used every day for the past week. Is shifting.

  By the way, in recent years, in a water heater that performs basic boiling operation and additional boiling operation, it is desired to store hot water in a hot water tank more efficiently.

  Then, the subject of this invention is providing the control apparatus of the hot water supply machine which can store hot water efficiently in a hot water supply tank.

  The control device according to the first aspect of the present invention is sent from the heat source unit that heats water taken from the water supply line, the hot water tank that stores water heated by the heat source unit, and the hot water tank via the hot water line. A hot water supply control device having a hot water use section for allowing a user to use hot water, and includes a heat source control section, a storage section, and a determination section. The heat source control unit causes the heat source unit to perform a basic boiling operation and an additional boiling operation. The basic boiling operation is executed in a predetermined time zone. The additional boiling operation is executed in a time zone other than the predetermined time zone. The accumulating unit accumulates actual data on the amount of hot water used in the hot water using unit. A determination part determines the tank target hot water amount which is the target amount of hot water stored in a hot water supply tank based on performance data. The determining unit determines the target tank hot water amount for each day of the week. The heat source control unit causes the heat source unit to perform a basic boiling operation and / or an additional boiling operation in accordance with the tank target hot water amount determined by the determining unit.

  Here, as a feature of how hot water of a water heater is used in a predetermined property such as a commercial facility, there is a feature that the amount of hot water required varies greatly every day of the week compared to a general household.

  In the control device according to the first aspect of the present invention, the basic boiling operation and / or the additional boiling is performed according to the tank target hot water amount determined for each day of the week based on the actual usage data of the hot water used in the hot water use section. The action is executed. For this reason, hot water can be efficiently stored according to the use situation of the user. In particular, in properties where the hot water usage varies greatly depending on the day of the week, the tank target hot water volume is determined for each day of the week. For example, the tank is based on the average value of actual water usage data for the past week. The basic boiling operation and / or the additional boiling operation can be executed at a timing at which hot water can be stored in the hot water supply tank more efficiently than when the target hot water amount is determined.

  Thereby, hot water can be efficiently stored in the hot water supply tank.

  In the control device according to the second aspect of the present invention, in the control equipment according to the first aspect, the determining unit determines the target tank hot water amount for each time zone. For this reason, in this control device, since the basic boiling operation and / or the additional advance operation is performed according to the target tank hot water amount based on the usage record data for each time period, for example, every day (that is, every 24 hours). An appropriate amount of hot water can be stored in the hot water supply tank rather than determining the tank target hot water amount.

  In the control device according to the third aspect of the present invention, in the control device according to the first aspect or the second aspect, the determining unit determines the tank target hot water amount using the outside air temperature information and / or weather information.

  When the hot water tank is installed outdoors, the hot water stored in the hot water tank tends to be easily affected by outside air temperature and weather.

  In this control apparatus, since the tank target hot water amount is determined using the outside air temperature and weather information, the hot water amount stored in the hot water supply tank can be appropriately controlled.

  The control apparatus which concerns on the 4th viewpoint of this invention is a control apparatus in any one of a 1st viewpoint to the 3rd viewpoint, and is provided with the remote control part for managing a hot water heater remotely. For this reason, in this control apparatus, performance data, tank target hot water quantity, etc. can be monitored remotely.

  In the control device according to the fifth aspect of the present invention, in any one of the control devices according to the first to fourth aspects, the heat source control unit causes the heat source unit to perform a heat retaining operation. The heat retaining operation is an operation for setting the temperature of the hot water stored in the hot water tank to the target temperature based on the temperature of the hot water stored in the hot water tank. In this control device, by causing the heat source unit to perform the heat retaining operation, it is possible to reduce the possibility that the temperature of the hot water stored in the hot water supply tank is excessively lowered.

  The control device according to the sixth aspect of the present invention is the control device according to the fifth aspect, in which the operation history data of the heat retaining operation is stored in the storage unit. The determining unit determines the tank target hot water amount using the operation history data.

  Here, when the hot water stored in the hot water supply tank is set to the target temperature, the COP (coefficient of performance) may be better when the additional boiling operation is performed than when the heat retaining operation is performed.

  In this control device, the tank target hot water volume is determined using the operation history data of the heat retention operation, thereby reducing the number of times the heat retention operation is performed or performing an additional boiling operation instead of the heat retention operation. Can do. Thereby, the electric power consumed by the water heater can be suppressed.

  The control device according to a seventh aspect of the present invention is the control device according to any one of the first to sixth aspects, wherein the tank target hot water amount is set according to a demand time limit of the equipment in the property where the water heater is installed. It is determined using the power consumption of the water heater.

  Here, since the equipment installed in the property is supplied with power, the equipment can be a power consumption source. In general, the higher the total power consumption, the higher the basic fee paid to the contracted power company. In recent years, there has been a movement to reduce the total power consumption of various devices including equipment. Is growing.

  In this control device, the tank target amount is determined so as to suppress the power consumption amount of the hot water heater in a predetermined time period according to the demand time period, so that it corresponds to the use situation of the hot water of the user and the facility The amount of power consumed by the entire device can be adjusted.

  A control device according to an eighth aspect of the present invention is the control device according to any one of the first to seventh aspects, wherein the water heater has a water receiving tank that stores water that is sent to the heat source unit via the water supply line. . For this reason, in this control apparatus, the water heater which has a water receiving tank is controllable.

  In the control device according to the first aspect of the present invention, hot water can be efficiently stored in the hot water supply tank.

  In the control device according to the second aspect of the present invention, an appropriate amount of hot water can be stored in the hot water supply tank.

  In the control device according to the third aspect of the present invention, the amount of hot water stored in the hot water supply tank can be appropriately controlled.

  In the control device according to the fourth aspect of the present invention, it is possible to remotely monitor the performance data, the tank target hot water amount, and the like.

  In the control device according to the fifth aspect of the present invention, it is possible to reduce the possibility that the temperature of the hot water stored in the hot water supply tank is excessively lowered.

  In the control device according to the sixth aspect of the present invention, the power consumed by the water heater can be suppressed.

  With the control device according to the seventh aspect of the present invention, it is possible to adjust the amount of power consumed by the entire equipment as well as responding to the use situation of the user's hot water.

  With the control device according to the eighth aspect of the present invention, a water heater having a water receiving tank can be controlled.

The schematic block diagram of the water heater using the control apparatus which concerns on one Embodiment of this invention. The schematic block diagram of the control apparatus which concerns on one Embodiment of this invention. The schematic block diagram of a controller. The figure which shows the various area | regions contained in the memory | storage part which a controller has. The figure which shows an example of daily report data. The schematic block diagram of a management server. The figure which shows the various area | regions contained in the memory | storage part which a management server has. The figure which shows the flow of a process in a controller and a management server. The figure which shows the correspondence of the pattern of the next day of a property, property information, etc. The figure which shows the correspondence of the pattern of the next day of a property, and the tank target hot water volume at each time. The schematic block diagram of the water heater in the modification B. The figure which shows an example of each operation time according to the tank target hot water amount before tuning, and use results. The figure which shows an example of each operation time according to the tank target hot water volume after tuning, and a use performance.

  A control device 60 of a water heater 10 according to an embodiment of the present invention will be described with reference to the drawings. In addition, the following embodiment of this invention can be suitably changed in the range which does not deviate from the meaning of this invention.

(1) Overall configuration of the water heater 10 FIG. 1 is a schematic configuration diagram of the water heater 10 using the control device 60 of the present invention. FIG. 2 is a schematic configuration diagram of the control device 60. The hot water heater 10 is a hot water supply facility used in large facilities such as accommodation facilities, lunch centers, canteens, hospitals, and welfare facilities. As shown in FIG. 1, the water heater 10 mainly includes a heat source unit 11, a hot water tank 12, a hot water use unit 13, a controller 60, a water supply line 14, a hot water line 15, and hot water as a hot water line. And a circulation path 16. The water supply line 14 is a pipe connecting the water receiving tank 17 and the heat source unit 11. The hot water line 15 is a pipe connecting the heat source unit 11 and the hot water supply tank 12. The hot water circulation path 16 is a pipe that connects the hot water supply tank 12 and the hot water use section 13. In FIG. 1, arrows along the water supply line 14, the hot water line 15, and the hot water circulation path 16 indicate the direction in which water or hot water flows.

(2) Detailed configuration of water heater 10 (2-1) Receiving tank 17
The water receiving tank 17 is installed outdoors and is a tank for storing water used in the water heater 10. The water receiving tank 17 is connected to a water supply or the like. The water receiving tank 17 supplies water to the heat source unit 11 through the water supply line 14.

(2-2) Heat source unit 11
The heat source unit 11 is installed outdoors. The heat source unit 11 heats water using a heat pump that exchanges heat with the refrigerant circulating in the refrigeration cycle, thereby generating hot water. The heat source unit 11 receives supply of water from the water receiving tank 17 through the water supply line 14. The heat source unit 11 heats the water taken from the water supply line 14. The heat source unit 11 sends hot water that is heated water to the hot water supply tank 12 via the hot water supply line 15.

  The hot water line 15 is provided with a hot water generation amount detection sensor 90 for detecting the amount of hot water generated in the heat source unit 11 and a generated hot water temperature detection sensor 91 for detecting the temperature of hot water flowing through the hot water line 15. (See FIG. 3). The detection values of the hot water generation amount detection sensor 90 and the generated hot water temperature detection sensor 91 are sent to the controller 20.

(2-3) Hot water tank 12
The hot water supply tank 12 is an open or sealed tank for storing water supplied from the heat source unit 11 through the hot water line 15, that is, hot water. Hot water stored in the hot water supply tank 12 is supplied to the hot water use section 13 via the hot water circulation path 16. As shown in FIG. 1, the hot water circulation path 16 has an annular shape, and hot water stored in the hot water supply tank 12 is sent to the hot water use section 13 via the hot water circulation path 16. Hot water not used in the section 13 is returned to the hot water supply tank 12 via the hot water circulation path 16.

  The hot water supply tank 12 is provided with a remaining hot water amount detection sensor 92 for detecting the amount of hot water accumulated in the hot water supply tank 12 (hereinafter referred to as the remaining hot water amount) (see FIG. 3). As this sensor, for example, a water pressure sensor or a water temperature sensor is employed. Taking a water pressure sensor as an example, the water pressure sensor is attached to the lower part of the hot water supply tank 12, and the remaining hot water amount in the hot water supply tank 12 is estimated by detecting the water pressure due to the hot water inside the hot water supply tank 12. The detection value of the remaining hot water amount detection sensor 92 and the detection value of the remaining hot water temperature detection sensor 93 for detecting the temperature of the hot water stored in the hot water supply tank 12 are sent to the controller 20.

(2-4) Hot water use part 13
The hot water use unit 13 is for allowing the user to use hot water stored in the hot water supply tank 12 such as a kitchen, a shower, and a pool. Hot water stored in the hot water supply tank 12 is supplied to the hot water use section 13 through the hot water circulation path 16 by the hot water supply pump 16a.

(2-5) Control device 60
The control device 60 is a device for controlling each part 11, 16 a of the water heater 10. The control device 60 mainly includes a controller 20 disposed in a property where the water heater 10 is installed, and a management server 40 as a remote control unit installed remotely so as to be communicable with the controller 20.

(3) Detailed configuration of control device 60 (3-1) Controller 20
FIG. 3 is a schematic configuration diagram of the controller 20. The controller 20 is connected to the units 11 and 16a of the hot water heater 10 of the property, and controls the operation of the water heater 10 by transmitting a control signal to the units 11 and 16a. Here, as shown in FIG. 1, the controller 20 is attached to the outer wall of the hot water supply tank 12.

  Further, the controller 20 creates daily report data related to the water heater 10 and transmits the created daily report data to the management server 40. In addition, when a charge system is adopted in which the nighttime power time zone as a predetermined time zone is lower than the daytime power time zone as a time zone other than the predetermined time zone, the daily report data here is Various information acquired from the start time of the night power hours to the end time of the daytime hours is included. For example, if the start time of the nighttime power period on January 1 is 22:00 and the end time of the daytime power period is 22:00 on January 2, the controller 20 Daily report data is created based on various information for 24 hours from 2:00 to 22:00 on January 2nd. Here, the case where the said charge system is employ | adopted is demonstrated as an example. In the following description, 24 hours from the start time of the night power hours to the end time of the daytime hours is defined as one day. Here, the day of the week to which the daytime power time period belongs is processed as the day of the week to which various information belongs.

  The controller 20 transmits predetermined information to the management server 40 in addition to the daily report data in response to a request from the management server 40 or automatically. Moreover, the controller 20 receives the information regarding the schedule of the next day from the management server 40, and sets the information regarding this schedule.

  The controller 20 mainly includes an input unit 21, an output unit 22, a communication unit 23, a storage unit 24, a daily report data creation unit 25, and a heat source control unit 26.

(3-1-1) Input unit 21
The input unit 21 receives input of various information and various operations from the user of the water heater 10. The input unit 21 is an input device such as a keyboard or a touch panel display, for example.

(3-1-2) Output unit 22
The output unit 22 outputs various information such as input information. The output unit 22 is an output device such as a display, for example.

(3-1-3) Communication unit 23
The communication unit 23 is connected to the Internet 61 via a predetermined network device and receives information on the next day's schedule from the management server 40. The information related to the schedule includes information related to the tank target hot water volume for each time zone.

  In addition, the communication unit 23 transmits predetermined information including daily report data of the previous day to the management server 40. The predetermined information includes data related to the amount of hot water in the hot water supply tank 12 immediately before the start of the night power hours on the next day, that is, data related to the amount of hot water in the hot water tank 12 immediately before the end of the daytime power hours on that day.

(3-1-4) Storage unit 24
FIG. 4 is a diagram illustrating various areas 24 a to 24 d included in the storage unit 24. The storage unit 24 stores various information received by the input unit 21, various data transmitted from the various sensors 90 to 94 of the water heater 10, various programs necessary for controlling the heat source unit 11, and the like.

  The storage unit 24 includes a remaining hot water storage area 24a, a hot water generation storage area 24b, an outside air temperature storage area 24c, and a schedule storage area 24d.

  In the remaining hot water storage area 24a, a detection value detected by the remaining hot water detection sensor 92, that is, data relating to the remaining hot water amount in the hot water supply tank 12 (hereinafter referred to as remaining hot water data) is stored. Here, the remaining hot water amount storage area 24a stores at least the remaining hot water amount data at the end point time of a predetermined period of one day.

  The hot water generation amount storage area 24b stores a value detected by the hot water generation amount detection sensor 90, that is, data relating to the amount of hot water generated in the heat source unit 11 (hereinafter referred to as hot water generation amount data). Here, whenever the hot water generation amount detection sensor 90 detects the flow of hot water, the hot water generation amount storage area 24b stores hot water generation amount data in association with the detection time.

  The outside temperature storage area 24c stores a value detected by the outside temperature detection sensor 94, that is, data related to the outside temperature in the area where the water heater 10 is installed (hereinafter referred to as outside temperature data). Here, the outside temperature detection sensor 94 is provided in the heat source unit 11, for example, and sends the detected value to the controller 20 every predetermined time. Then, every time a detection value is transmitted from the outside temperature detection sensor 94, outside temperature data is stored in the outside temperature storage area 24c in association with the detection time.

  The schedule storage area 24 d is an area for storing information on the next day's schedule transmitted from the management server 40. As shown in FIG. 4, the information related to the schedule for the next day includes information related to the tank target hot water amount for each time zone, here, information related to the tank target hot water amount for each predetermined time (every hour).

(3-1-5) Daily report data creation unit 25
FIG. 5 is a diagram showing an example of daily report data sent from the controller 20 to the management server 40. The daily report data creating unit 25 creates daily report data to be transmitted to the management server 40 based on various information stored in the storage unit 24. Here, the daily report data creation unit 25 creates daily report data for the previous day during the night power hours of the day.

  The daily report data includes hot water generation amount data, hot water usage amount data, and outside air temperature data for a predetermined period of a day. The hot water generation amount data in a predetermined period (for example, 22:00 to 23:00) is the hot water generation amount data belonging to the predetermined period (22: 0 to 23:00) stored in the hot water generation amount storage area 24b. It is obtained by accumulating. The amount of hot water used in a predetermined period (for example, 22:00 to 23:00) is determined based on the remaining hot water amount data at the end point (23:00) of the predetermined period stored in the remaining hot water storage area 24a. It is obtained by subtracting the value of the hot water production amount data at (22:00 to 23:00). The outside air temperature data in a predetermined period (for example, 22:00 to 23:00) can be obtained by calculating the average value of the outside air temperature data belonging to the predetermined period (22:00 to 23:00). In FIG. 5, the hot water generation amount data, the hot water usage amount data, and the outside air temperature data in a predetermined period (for example, 22:00 to 23:00) are stored in the column of the start time (22:00) of the predetermined period. The method shown is adopted.

(3-1-6) Heat source control unit 26
The heat source control unit 26 generates hot water stored in the hot water supply tank 12 by controlling the heat source unit 11. Here, the heat source control unit 26 includes a basic boiling operation and an additional boiling operation so that the hot water tank 12 does not run out (so that the remaining hot water amount in the hot water tank 12 does not fall below a safety factor described later). The hot water supply operation is performed by the heat source unit 11. The basic boiling operation is an operation that is performed during the nighttime power period, and the additional boiling operation is an operation that is performed during the daytime power period. The heat source control unit 26 causes the heat source unit 11 to perform the basic boiling operation to perform the heat storage operation, and the heat source unit 11 performs the additional boiling operation to perform the hot water storage operation.

  Further, the heat source control unit 26 causes the heat source unit 11 to perform the basic boiling operation and the additional boiling operation in accordance with the tank target hot water amount for each time zone stored in the schedule storage area 24d. The tank target hot water volume is set every predetermined time, and the heat source control unit 26 performs a predetermined operation on the heat source unit 11 so that the hot water volume in the hot water supply tank 12 at the predetermined time becomes the tank target hot water volume corresponding to the time. Let it be done. For example, when the tank target hot water amount at 8:00 as the predetermined time is 100%, the hot water amount in the hot water supply tank 12 at 8:00 that is the predetermined time is 100% that is the tank target hot water amount corresponding to the time. Thus, the heat source control unit 26 causes the heat source unit 11 to perform a predetermined operation between 7:00 and 8:00 which is a predetermined period. For this reason, when the tank target hot water amount is determined, the operation timing of the heat source unit 11 in each time zone is determined.

(3-2) Management server 40
FIG. 6 is a schematic configuration diagram of the management server 40. The management server 40 stores information related to the water heater 10 transmitted from the controller 20 via the Internet 61, creates information related to the schedule for the next day, and transmits the information to the controller 20. The management server 40 includes an input unit 41, an output unit 42, a communication unit 43, a storage unit 44, and an arithmetic processing unit 45.

(3-2-1) Input unit 41
The input unit 41 receives input of various information and various operations from the user of the management server 40. The input unit 41 is an input device such as a mouse or a keyboard.

(3-2-2) Output unit 42
The output unit 42 outputs various information such as input information. The output unit 42 is an output device such as a display, for example.

(3-2-3) Communication unit 43
The communication unit 43 is connected to the Internet 61 via a predetermined network device and receives various types of information including daily report data transmitted from the controller 20. Furthermore, the communication unit 43 transmits information regarding the next day schedule created on the management server 40 side to the controller 20.

(3-2-4) Storage unit 44
FIG. 7 is a diagram showing various areas 44 a and 44 b included in the storage unit 44. The storage unit 44 stores various types of information received by the input unit 41, various calculation programs including a program related to creation of a schedule executed by the calculation processing unit 45, various data necessary for calculation processing of the calculation processing unit 45, and the like. Is done.

  The storage unit 44 includes a property information storage area 44a and a usage record storage area 44b as an accumulation unit.

  Information related to the target property is stored in the property information storage area 44a. The information on the target property includes information on the name, business type, equipment, usage pattern, and margin rate course of the target property. The information related to the equipment includes information related to the maximum amount of hot water stored in the hot water supply tank 12. The information on the usage pattern includes information on whether or not the hot water storage operation is necessary in the property, and whether or not hot water is used in the night power hours. The information on the margin rate course is information on the ratio of the amount of surplus hot water in the hot water supply tank 12, for example, a 10% surplus water amount course generally used as a standard, a 0% surplus water amount course for the purpose of energy saving than the standard, and a hot water outage Courses including a 20% surplus hot water course for the purpose of prevention are provided. The information regarding the target property is input from the user of the water heater 10 via the input unit 21 of the controller 20 and sent from the communication unit 23 to the management server 40 via the Internet 61 and stored in the property information in the storage unit 44. It is stored in the area 44a.

  Various information in the daily report data transmitted from the controller 20 is stored in the usage record storage area 44b. Various information in the daily report data includes information on hot water generation amount data, hot water usage amount data, and outside air temperature data for each predetermined period. In other words, the usage data storage area 44b stores actual data on the amount of hot water used in the hot water usage unit 13. These pieces of information are stored in the usage record storage area 44b as data for each predetermined period.

(3-2-5) Arithmetic processor 45
The arithmetic processing unit 45 is an arithmetic processing unit such as a CPU that reads out and executes various programs stored in the storage unit 44 and performs various calculations and processes. In particular, the arithmetic processing unit 45 reads out and executes a program related to the creation of a schedule stored in the storage unit 44, so that hot water stored in the hot water supply tank 12 based on the past hot water usage data of the water heater 10. It functions as a determination unit that determines the tank target hot water amount that is the target amount. The arithmetic processing unit 45 includes a constant calculation unit 45a, a tank target hot water volume calculation unit 45b, and a schedule creation unit 45c.

  The constant calculation unit 45a is based on the data accumulated in the usage record storage area 44b, and a usage amount constant for calculating the predicted amount of hot water to be used the next day (hereinafter referred to as predicted hot water usage amount), and the next day. A generation amount constant for calculating a predicted amount of hot water to be generated (hereinafter referred to as a predicted hot water generation amount) is obtained.

  Here, since the amount of hot water used tends to change depending on the outside air temperature, the amount of hot water used can be expressed as a function of the outside air temperature. On the other hand, since the amount of hot water used varies depending on the day of the week and the time zone, here, a usage amount constant for each time zone is obtained for each day of the week. When obtaining the usage amount constant, for example, outside temperature data and hot water usage data for the past year are extracted from the previous day out of the outdoor temperature data and hot water usage data corresponding to the property. Then, data of the same day of the week (hereinafter, referred to as a predetermined day of the week) of the extracted outside air temperature data and hot water usage data is further extracted. At this time, noise data may be omitted based on usage patterns, property data, and the like. Next, an approximate expression is created based on the outside temperature data and hot water usage data for each time zone in the extracted data. Thereby, the usage constant corresponding to the predetermined time zone on the predetermined day of the week can be obtained.

  Moreover, since the production amount of hot water tends to change depending on the outside air temperature, the production amount of hot water can be expressed as a function of the outside air temperature. Here, a generation amount constant at a predetermined time is obtained. When obtaining the generation amount constant, for example, hot water generation amount data for the past year is extracted from the previous day from the hot water generation amount data corresponding to the property. And the hot water generation amount data when the heat source unit 11 operates for a predetermined time (here, 60 minutes) in the nighttime electric power time period in the extracted hot water generation amount data, and the outside air temperature corresponding to the hot water generation amount data Data is further extracted. At this time, noise data may be omitted based on usage patterns, property data, and the like. Next, an approximate expression is created based on the extracted data. Thereby, the production amount constant of the next day can be calculated | required. In addition, although the temperature (water supply temperature) of the water which flows through the water supply line 14 may also influence the amount of hot water generated, since the water supply temperature tends to change in proportion to the outside air temperature, the generation amount constant is calculated here. Shall be excluded from the calculation item.

  The tank target hot water amount calculation unit 45b determines the tank target hot water amount according to the time zone of the next day using the use amount constant and the generation amount constant calculated by the constant calculation unit 45a. Here, the tank target hot water amount calculation unit 45b uses the property data and the outdoor temperature data on the next day in addition to the usage amount constant and the generation amount constant. The tank target hot water amount calculation unit 45b first makes a provisional determination of a part of the target tank hot water amount for the next day based on the acquired various constants and the acquired various data. And the tank target hot water amount calculation part 45b calculates the tank target hot water amount according to the time zone of the next day based on property data and the remaining hot water amount data just before the start of the night electric power time zone of the next day.

  The schedule creation unit 45c creates information related to a schedule for the next day according to the tank target hot water amount for each time zone calculated by the tank target hot water calculation unit 45b.

(4) Process Flow in Controller 20 and Management Server 40 FIG. 8 is a diagram showing a process flow in the controller 20 and management server 40. Hereinafter, the flow of processing in the controller 20 and the management server 40 will be described with reference to FIG. FIG. 8 shows the temporal relationship of the processes executed by the three elements (the water heater 10, the controller 20 and the management server 40) involved in the tuning of the tank target hot water volume, and the flow of data passed between these elements. Yes. In FIG. 8, the flow of time is defined from top to bottom. In the following description, it is assumed that property data including information on the type of business, equipment, usage pattern, and margin rate course corresponding to the target property is already stored in the property information storage area 44a of the management server 40.

  In S1, in order to calculate the average value of the amount of hot water generated in the heat source unit 11 for each predetermined period, the amount of hot water used for the predetermined period in the hot water use unit 13, and the outside air temperature for each predetermined period, the controller 20 Various data such as remaining hot water amount data, hot water production amount data, and outside air temperature data transmitted from 10 are received. The controller 20 performs various processes such as an integration process and an average process on the received various data, and stores the processed data in the storage areas 24a, 24b, and 24c of the storage unit 24.

  In S <b> 2, the daily report data creation unit 25 of the controller 20 creates daily report data for the previous day based on various data stored in the storage unit 24.

  In S3, the controller 20 transmits the created daily report data to the management server 40. In S4, the management server 40 accumulates various types of information included in the received daily report data in the usage record storage area 44b of the storage unit 44.

  In S <b> 5, the arithmetic processing unit 45 of the management server 40 provisionally determines a part of information related to the schedule for the next day of the water heater 10. First, the constant calculation unit 45a of the arithmetic processing unit 45 calculates a usage amount constant and a generation amount constant based on various data accumulated in the usage record storage area 44b. Next, the tank target hot water amount calculation unit 45b extracts information on the business type, equipment, usage pattern, and margin rate course corresponding to the property from the property data stored in the property information storage area 44a. Further, the tank target hot water volume calculation unit 45 b receives the next day's weather information distributed from the company or the like that provides the weather information providing service via the Internet 61. This weather information includes outdoor temperature data for each time zone of the next day. Regarding weather information, it is preferable to obtain the latest information as much as possible. At this time, the tank target hot water volume calculation unit 45b may receive information on the day of the next day or holiday setting via the Internet 61. And the tank target hot water amount calculation part 45b provisionally determines the information regarding the schedule of the next day based on these acquired various data and the usage amount constant and production | generation amount constant which the constant calculation part 45a of the arithmetic processing part 45 calculated.

  Specifically, the tank target hot water amount calculation unit 45b first calculates the predicted hot water usage amount for the next day based on the outside air temperature data and the usage amount constant. More specifically, the tank target hot water amount calculation unit 45b is classified according to the time zone of the next day from the usage amount constant corresponding to each time zone calculated by the constant calculation unit 45a and the outside air temperature data of the next day corresponding to each time zone. Calculate the predicted usage. For example, if the predicted hot water usage for the time zone from 13:00 to 14:00 on Friday, April 11 is calculated, the constant calculation unit 45a calculates the predicted outside air temperature from 13:00 to 14:00 on Friday, April 11. It can be calculated by multiplying the calculated usage constant corresponding to 13:00 to 14:00 on Friday.

  Next, the tank target hot water amount calculation unit 45b, based on the predicted hot water usage amount and property data of the next day, the tank target hot water amount at each time belonging to the night electric power hours and the tank target hot water amount at each time belonging to the daytime electric power hours. Are calculated respectively.

  More specifically, the tank target hot water amount calculation unit 45b first adds up the predicted hot water usage calculated for each time zone, and calculates the predicted hot water usage for the next day (hereinafter referred to as the predicted total hot water usage). .

  Next, the tank target hot water amount calculation part 45b calculates | requires the maximum tank target hot water amount (unit is%) of the next day based on the predicted total hot water consumption and the maximum hot water storage amount. The maximum tank target hot water amount can be obtained by multiplying the value obtained by dividing the predicted total hot water use amount by the maximum hot water storage amount by 100 and adding the ratio of the margin rate course.

  Then, the tank target hot water amount calculation unit 45b calculates the tank target hot water amount (unit:%) at the daytime power start time. The tank target hot water amount at the daytime power start time can be obtained by multiplying the value obtained by dividing the predicted hot water usage amount during the night power hours by the maximum hot water storage amount by 100, and subtracting this from the maximum tank target hot water amount. Note that the predicted hot water usage during the night power hours can be obtained by summing up the predicted hot water usage for all time zones belonging to the night power hours among the predicted hot water usage calculated for each time zone.

  Thereafter, the tank target hot water amount calculation unit 45b calculates the tank target hot water amount (unit:%) at each time in the daytime power time zone excluding the daytime power start time. For example, the tank target hot water amount at a predetermined time (for example, 9:00) in the daytime electric power hours is the predicted hot water usage amount in a predetermined period (8:00 to 9:00) with the predetermined time (9:00) as an end time. Is multiplied by 100, and this is multiplied by the tank target hot water amount at the time (8:00, hereinafter referred to as the previous time) when the tank target hot water amount immediately before the predetermined time (9:00) is determined. It can be obtained by reducing.

  In this way, the tank target hot water amount calculation unit 45b provisionally determines the tank target hot water amount at each time in the daytime electric power time zone. At the time of provisional determination, the tank target hot water amount at the daytime power start time may exceed 100% in calculation. Further, when the tank target hot water amount at each time in the daytime power period excluding the daytime power start time is obtained and the tank target hot water amount at the previous time exceeds 100%, the tank target hot water amount at the previous time is set to 100%. It shall be calculated as

  In step S <b> 6, when the time immediately before the start of the nighttime power time zone of the next day is reached, the controller 20 sends a current remaining hot water amount data acquisition command to the water heater 10.

  In step S <b> 7, when the water heater 10 receives an acquisition command from the controller 20, it sends the current remaining hot water amount data to the controller 20.

  In step S <b> 8, the controller 20 sends the acquired remaining hot water amount data to the management server 40.

  In step S <b> 9, the management server 40 creates information related to the next day's schedule based on the current remaining hot water amount data sent from the controller 20.

  Specifically, first, the tank target hot water amount calculation unit 45b of the management server 40 extracts information regarding the usage pattern of the property stored in the property information storage area 44a. Next, the tank target hot water amount calculation unit 45b refers to the table shown in FIG. 9, and calculates the maximum target hot water amount for the next day, the tank target hot water amount at the daytime power start time temporarily determined, and the extracted usage pattern information. The pattern of the next day of the target property is determined. For example, the maximum target hot water volume is 100% or more, the tank target hot water volume at the daytime power start time is 100% or more, hot water storage operation is available, and the use of hot water at night power hours is available. If it is none, the pattern of the next day of the target property is determined as pattern A. In addition, the maximum target hot water volume is 100% or more, the tank target hot water volume at daytime power start time is 100% or more, hot water storage operation is available, and the use of hot water at night power hours is If yes, the pattern of the next day of the target property is determined as pattern B.

  Thereafter, the tank target hot water amount calculation unit 45b determines the tank target hot water amount at each time with reference to the table shown in FIG. More specifically, first, the tank target hot water amount calculation unit 45b refers to the table shown in FIG. 10, and based on the determined pattern of the next day of the target property and the current remaining hot water amount data at each time of the night power hours. Determine the target tank volume. For example, in the case of patterns B and C, the tank target hot water amount at each time belonging to the night power hours is determined to be 100%. In the case of pattern E, the calculated maximum target hot water amount is determined as the tank target hot water amount at each time belonging to the night power hours.

  In the case of Patterns A and D, the tank target hot water amount calculation unit 45b further calculates the tank target hot water amount at each time belonging to the night power hours based on the current remaining hot water amount data.

  Specifically, the tank target hot water amount calculation unit 45b first obtains the necessary amount of generation based on the temporarily determined daytime power start time tank target hot water amount and the current remaining hot water amount data. The required amount of production can be obtained by multiplying the value obtained by subtracting the current tank hot water amount from the tank target hot water amount at the tentatively determined daytime power start time by the maximum hot water storage amount. The current amount of hot water in the tank can be obtained by multiplying the value obtained by dividing the current amount of remaining hot water by the maximum amount of stored hot water by 100.

  Next, the tank target hot water amount calculation unit 45b obtains the necessary time for the heat storage operation based on the predicted hot water production amount and the necessary production amount. The necessary time for the heat storage operation can be obtained by adding a preset safety time to a value obtained by dividing the necessary production amount by the predicted hot water production amount.

  And the tank target hot water amount calculation part 45b determines the tank target hot water amount in each time which belongs to a night electric power time slot | zone. Specifically, the tank target hot water amount calculation unit 45b sets the tank target hot water amount at the time to which the time obtained by subtracting the necessary time for the heat storage operation from the start time of the daytime power time zone equal to the tank target hot water amount at the daytime power start time. To decide. On the other hand, the tank target hot water amount calculation unit 45b determines the tank target hot water amount at other times belonging to the nighttime power hours to the minimum hot water amount (for example, the same hot water amount as the safety factor).

  Moreover, the tank target hot water amount calculation part 45b determines the tank target hot water amount in the start time of a daytime electric power time slot | zone with reference to the table shown in FIG. For example, in the case of patterns A and B, the tank target hot water amount at the start time of the daytime power time zone is determined to be 100%. In the case of patterns C, D, and E, the tank target hot water amount at the daytime power start time temporarily determined is determined as the tank target hot water amount at the daytime power start time.

  Further, the tank target hot water amount calculation unit 45b determines the tank target hot water amount at each time belonging to the daytime power time period excluding the start time of the daytime power time period with reference to the table shown in FIG. For example, in the case of the patterns A and B, the tank target hot water amount at each time in the daytime power time zone temporarily determined is determined as the tank target hot water amount at each time in the daytime power time zone. In the case of patterns C, D, and E, the minimum amount of hot water (for example, the same amount of hot water as the safety factor) is determined as the tank target hot water amount at each time in the daytime power hours.

  And the schedule preparation part 45c produces the information regarding the schedule of the next day based on the tank target hot water quantity in each time of the next day which the tank target hot water calculation part 45b calculated.

  In step S <b> 10, the management server 40 transmits information regarding the created schedule for the next day to the controller 20. And the controller 20 receives the information regarding the schedule of the next day transmitted from the management server 40, and memorize | stores it in the schedule memory | storage area | region 24d.

  In step S11, the heat source control unit 26 controls the heat source unit 11 according to the tank target hot water amount at each time stored in the schedule storage area 24d.

(5) Features (5-1)
2. Description of the Related Art Conventionally, there is a water heater configured such that water heated by a heat source unit, that is, hot water is stored in a hot water supply tank and the hot water stored in the hot water supply tank is used by a user.

  Here, in order not to cause hot water shortage, which is a state where there is no hot water stored in the hot water supply tank, it is necessary to store in the hot water supply tank hot water that exceeds the amount of hot water used by the user. In other words, the hot water supply tank 12 needs to store at least hot water used by the user before the user uses it. On the other hand, since it is necessary to operate the heat source unit 11 in order to generate hot water to be stored in the hot water supply tank 12, if the hot water more than the amount of hot water used by the user is stored in the hot water supply tank 12, the surplus Therefore, the heat source unit 11 consumes extra power to generate hot water.

  In the present embodiment, the tank target hot water amount is determined using a usage amount constant and a production amount constant calculated based on past usage record data, and this is set as a schedule for the next day. Then, the basic boiling operation and the additional boiling operation are executed according to the set schedule for the next day. For this reason, hot water can be efficiently stored in the hot water supply tank according to the use situation of the user.

  In addition, as a characteristic of how hot water is used in commercial facilities such as accommodation facilities, lunch centers, canteens, hospitals and welfare facilities, the amount of hot water required varies greatly on each day of the week compared to ordinary households. . In the present embodiment, the tank target hot water amount is determined by using the usage constant for each day of the week calculated based on past usage record data. Specifically, a usage constant is calculated based on the usage record data on the same day of the week as the next day in the past usage record data, and the tank target hot water volume for the next day is determined using this usage constant. That is, the tank target hot water amount is determined for each day of the week. For this reason, in particular, in a property where the hot water usage varies greatly depending on the day of the week, the basic boiling operation and the additional boiling operation can be performed at a timing at which hot water can be stored in the hot water supply tank 12 more efficiently. .

  Thereby, hot water can be efficiently stored in the hot water supply tank 12.

(5-2)
In this embodiment, the tank target hot water amount is determined for each time zone (for each time). Specifically, a usage constant is calculated based on the usage record data of each time zone in the past usage record data, and the tank target hot water volume for each time zone of the next day is determined using this usage constant. ing. That is, it is possible to determine the tank target hot water amount according to the past hot water usage record data. Thus, for example, an appropriate amount of hot water can be stored in the hot water supply tank 12 rather than the tank target hot water amount being determined every day.

(5-3)
Here, when the hot water supply tank 12 and the water receiving tank 17 are installed outdoors, the temperature of the hot water stored in the hot water supply tank 12 tends to be easily influenced by the outside air temperature and the weather.

  In the present embodiment, the tank target hot water amount is determined using outside air temperature data. For this reason, the amount of hot water stored in the hot water supply tank 12 can be appropriately controlled.

(5-4)
The control device 60 of the present embodiment includes a management server 40 for managing the water heater 10 remotely. For this reason, usage record data, tank target hot water volume, etc. can be monitored remotely. In addition, it can be used when determining the target hot water volume of the tank by acquiring the outside air temperature information and weather information of the next day distributed from a company that provides weather information providing service.

(5-5)
The water heater 10 of the present embodiment includes a water receiving tank 17 that stores water that is sent to the heat source unit 11 via the water supply line 14. For this reason, the water heater 10 having the water receiving tank 17 can be controlled.

  Further, since the water receiving tank 17 is provided, a large amount of water can be temporarily used, and water can be used even when water supply is cut off due to a disaster or an accident.

  Furthermore, in this embodiment, since the water receiving tank 17 is installed outdoors, the water stored in the water receiving tank 17 tends to be easily influenced by the outside air temperature. Here, since the tank target hot water amount is determined by using the outside air temperature information, the amount of hot water stored in the hot water supply tank 12 can be appropriately controlled even in the water heater 10 including the water receiving tank 17.

(6) Modification (6-1) Modification A
In the above embodiment, the control device 60 includes the controller 20 and the management server 40, and the controller 20 and the management server 40 are connected via the Internet 61 and can be managed remotely.

  However, the control device 60 according to the present invention is not limited to this, and may be configured only from a controller that is not connected to a network, for example. In this case, the controller further includes an arithmetic processing unit in addition to the configuration of the controller 20 of the above-described embodiment, and the storage unit 24 further includes a property information storage area and a usage record storage area as an accumulation unit. . Then, the tank target hot water amount calculation unit of the arithmetic processing unit calculates the tank target hot water amount at each time of the next day using the outside air temperature data in the past predetermined period (for example, the past one week). As described above, even if the tank is not connected to the network, the tank target hot water amount can be determined for each day of the week and / or for each time period, so that hot water can be efficiently stored in the hot water supply tank 12.

(6-2) Modification B
FIG. 11 is a schematic configuration diagram of a water heater 10 ′ including the heat retaining line 18. Note that the water heater 10 'has the same configuration as the water heater 10 except that a heat retaining line 18 is further provided in addition to the configuration of the water heater 10 of the above embodiment. The description of the same configuration as in FIG.

  In the above embodiment, the basic heating operation and the additional boiling operation are performed by the heat source unit 11, but in addition to these operations, the temperature of the hot water stored in the hot water supply tank 12 is kept at the target temperature. The operation may be performed by the heat source unit 11. The heat retention operation is an operation performed by the heat source control unit 26 based on the temperature of hot water stored in the hot water supply tank 12 (residual hot water temperature), and the heat source control unit 26 causes the heat source unit 11 to perform the heat retention operation. Is done. When the remaining hot water temperature falls to a predetermined temperature (for example, 60 degrees), the heat retaining operation is performed regardless of the tank target hot water volume until the remaining hot water temperature reaches the target temperature (for example, 63 degrees). By performing the heat insulation operation, the hot water stored in the hot water supply tank 12 is returned to the heat source unit 11 through the heat insulation line 18 shown in FIG. Is sent to the hot water supply tank 12 again. Thus, by performing the heat retaining operation, it is possible to reduce the possibility that the temperature of the hot water stored in the hot water supply tank 12 is excessively lowered.

  By the way, when heat insulation operation is performed in addition to heat storage operation or hot water storage operation, hot water stored in the hot water supply tank 12 is set to a target temperature, and hot water having a high temperature is supplied to the hot water supply tank 12 by the heat storage operation or the hot water storage operation. And increasing the amount of hot water stored in the hot water supply tank 12 while increasing the amount of hot water stored in the hot water supply tank 12 and hot water in the hot water supply tank 12 without increasing the amount of hot water stored in the hot water supply tank 12 by the heat insulation operation. There is a way to raise the temperature of the. Hot water storage operation and heat storage operation are performed according to the tank target hot water amount, but heat insulation operation is performed according to the remaining hot water temperature regardless of the tank target hot water amount, so the heat storage operation and hot water storage operation are performed immediately after the heat insulation operation is performed. May be. Further, when the hot water stored in the hot water supply tank 12 is set to the target temperature, the COP may be better when the hot water storage operation or the heat storage operation is performed than when the heat retention operation is performed.

  Therefore, when the heat retention operation is performed in addition to the heat storage operation or the hot water storage operation, the operation history data of the heat retention operation may be accumulated, and this operation history data may be used when determining the tank target hot water amount for the next day. For example, based on the accumulated operation history data, if there is a day of the week when the number of times of warming operation is higher than other days of the week, when creating a schedule, the tank target hot water volume for that day is reduced, basic boiling operation or addition The tank target hot water volume may be determined so that the timing of the boiling operation is advanced.

  FIG. 12 is a diagram illustrating an example of each operation and actual use performed according to the tank target hot water volume determined without using the operation history data of the heat retaining operation. FIG. 13 is a diagram illustrating an example of each operation and actual use performed according to the tank target hot water amount determined by using the operation history data of the heat retaining operation. 12 and 13, the hot water storage operation and the heat storage operation are collectively referred to as a hot water supply operation. When the tank target hot water amount is adjusted using the operation history data of the warming operation, in FIG. 13 showing the tank target hot water amount after adjustment, compared to FIG. 12 showing the tank target hot water amount before adjustment, Adjustment is made to increase the tank target hot water amount at 15:00 and 16:00 while reducing the tank target hot water amount from 17:00 to 19:00. Thereby, the frequency | count of the hot water supply driving | operation in the daytime time slot | zone and the frequency | count of a heat retention driving | operation can be reduced. Thus, by determining the tank target hot water amount using the operation history data of the heat retention operation, the number of times the heat retention operation is performed can be reduced, or the hot water storage operation and the heat storage operation can be performed instead of the heat retention operation. it can.

(6-3) Modification C
In the above embodiment, communication of daily report data and remaining hot water amount data is mainly performed between the controller 20 and the management server 40. In addition to these communications, bi-directional communications may always be performed.

  For example, various data related to the water heater 10 may be transmitted from the controller 20 to the management server 40 every predetermined time (for example, one minute). Thereby, various data related to the hot water heater 10 such as the remaining hot water amount and the remaining hot water temperature of the hot water tank 12 are constantly monitored remotely, the tank target temperature, the generated hot water temperature, etc. are changed remotely, or the hot water tank 12 When the amount of remaining hot water is insufficient or when an abnormality occurs in various devices of the water heater 10, it is possible to notify the administrator or user by means such as e-mail. Furthermore, daily report data can be edited and created on the management server 40 side.

(6-4) Modification D
The water heater 10 of the above embodiment includes a water receiving tank 17, and the water stored in the water receiving tank 17 is supplied to the heat source unit 11, but the present invention is applied to a water heater without the water receiving tank 17. May be. In this case, the water supply line 14 is connected to a water supply unit such as a water supply, and water is supplied from the water supply unit to the heat source unit 11. Since there is no water receiving tank, the space for installing the water receiving tank in the property can be reduced.

(6-5) Modification E
In the said embodiment, since the performance data for tuning is inadequate until after a predetermined period (for example, 2 weeks) passes after installing the controller 20 in the water heater 10, it is based on performance data. The tank target hot water volume may not be tuned, and an initial installation value set in advance by day of the week and by time may be determined as the tank target hot water volume by an administrator or the like. Furthermore, since the actual data for tuning may not be sufficient for a predetermined period (for example, two weeks to one month) after the controller 20 is installed in the water heater 10, there is a set margin. Regardless of the information related to the rate course, the tank target hot water amount may be calculated with a surplus hot water amount 20% course. Thereby, the hot water runout in the hot water supply tank 12 can be prevented.

  Moreover, in the said embodiment, when the setting of property data and the tank target hot water volume is changed by the user, the setting change by a user may be given priority.

  Furthermore, in the above embodiment, when various data cannot be acquired due to poor communication between the controller 20 and the management server 40, an initial set value set by an administrator or the like may be determined as the tank target hot water amount.

(6-6) Modification F
In the said embodiment, the tank target hot water amount is determined using the outside temperature data of the next day. However, the present invention is not limited to this, and meteorological information on the next day other than the outside air temperature (for example, weather etc.) is used instead of the outside air temperature or in addition to the outside air temperature to determine the tank target hot water amount. May be.

(6-7) Modification G
In the above embodiment, the pattern of the next day of the property is determined, and the tank target hot water amount at each time is determined with reference to the table shown in FIG. 10 stored in advance. The table shown in FIG. 10 referred to at this time shows an example and is not limited to this.

  For example, in the table shown in FIG. 10, when the pattern of the next day of the property is patterns C, D, and E, the tank target hot water amount at each time in the daytime power hours is determined as the minimum hot water amount (for example, safety factor). Has been. In addition, if the hot water supply tank 12 has run out more than a predetermined number of times when it is operated with the minimum target hot water volume at each time in the daytime power hours, this is indicated to an administrator or user. While notifying by e-mail or the like, the tank target hot water amount at each time in the daytime power time zone temporarily determined may be determined as the tank target hot water amount at each time in the daytime power time zone. Thereby, the possibility that the hot water supply tank 12 may run out due to the sudden use of hot water by the user in the daytime power hours can be reduced.

  Further, for example, in the table shown in FIG. 10, when the pattern of the next day of the property is the patterns B and C, the tank target hot water amount at each time belonging to the night power hours is determined to be 100%. Instead of this, similarly to the patterns A and D, the tank target hot water amount at each time belonging to the night electric power time zone may be further calculated based on the current remaining hot water amount data. Thereby, since the start time of heat storage operation can be delayed, the heat dissipation loss in the hot water supply tank 12 can be reduced.

(6-8) Modification H
Here, since the equipment installed in the building is supplied with power, the equipment can be a power consumption source. In general, the higher the total power consumption, the higher the basic fee paid to the contracted power company. In recent years, there has been a movement to reduce the total power consumption of various devices including equipment. Is growing.

  Therefore, in addition to the above-described embodiment, the tank target hot water amount is determined by using the power consumption amount of the water heater 10 set according to the demand time limit of the equipment in the property where the water heater 10 is installed. Also good. Thus, the tank target hot water amount is determined so that the power consumption amount of the water heater 10 in the predetermined time zone is suppressed, so that it corresponds to the use situation of the hot water of the user and the power consumption amount of the entire equipment is reduced. Can be adjusted.

  According to the present invention, hot water can be efficiently stored in the hot water tank, so that it is effective to apply to a control device for a hot water heater having a hot water tank.

DESCRIPTION OF SYMBOLS 10 Hot water heater 11 Heat source unit 12 Hot water tank 13 Hot water use part 14 Water supply line 16 Hot water circulation path (hot water supply line)
17 Water receiving tank 26 Heat source control unit 40 Management server (remote control unit)
44b Usage record storage area (accumulation unit)
45 Arithmetic processing part
60 Control device

JP 2013-87961 A

Claims (8)

A heat source unit (11) for heating water taken from the water supply line (14), a hot water supply tank (12) for storing water heated by the heat source unit, and a hot water supply line (16) from the hot water supply tank. A hot water use section (13) for allowing a user to use the hot water produced, and a control device for a water heater (10),
A heat source control section (26) for causing the heat source unit to perform a basic boiling operation performed in a predetermined time zone and an additional boiling operation performed in a time zone other than the predetermined time zone;
An accumulating unit (44b) for accumulating actual data on the amount of hot water used in the hot water using unit;
A determination unit (45) for determining a target amount of hot water, which is a target amount of hot water stored in the hot water tank, based on the actual data;
With
The determination unit determines the tank target hot water amount for each day of the week,
The heat source control unit causes the heat source unit to perform the basic boiling operation and / or the additional boiling operation according to the tank target hot water determined by the determining unit.
Control device (60). The determining unit determines the target amount of hot water for each tank according to a time period;
The control device according to claim 1. The determination unit determines the tank target hot water amount using outside air temperature information and / or weather information.
The control device according to claim 1 or 2. A remote control unit (40) for remotely managing the water heater;
Comprising
The control device according to any one of claims 1 to 3. The heat source control unit causes the heat source unit to perform a heat retaining operation for setting the temperature of the hot water stored in the hot water tank to a target temperature based on the temperature of the hot water stored in the hot water tank.
The control device according to claim 1. In the storage unit, operation history data of the heat retention operation is stored,
The determination unit determines the tank target hot water amount using the operation history data.
The control device according to claim 5. The tank target hot water amount is determined using the power consumption amount of the water heater set according to the demand time limit of the equipment in the property where the water heater is installed.
The control device according to any one of claims 1 to 6. The water heater has a water receiving tank (17) for storing water sent to the heat source unit via the water supply line.
The control device according to any one of claims 1 to 7.

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