JP2014149094A - Hot water supply device - Google Patents

Abstract

An object of the present invention is to provide a hot water supply apparatus that can handle a real schedule without extra energy consumption while receiving convenience of automatic boiling operation by learning.
A boiling operation by a heat pump is performed so that a hot water use scheduled for a predetermined time predicted based on a past record of a hot water usage is completed before the scheduled use time. Information related to the predicted amount of hot water to be used is displayed on the remote controller 101 as guides 121 and 123, and by operating the cross button 113, the displayed amount of hot water can be increased or decreased to the amount of hot water to be used according to the actual schedule. When the amount of hot water to be used is changed and set, guide information 124 is also provided for information on how long the wash and shower can be used.
[Selection] Figure 3

Description

  The present invention relates to a hot water supply device that combines a hot water storage type hot water heater and an instantaneous heating type combustion hot water heater, and in particular, a scheduled heat storage amount corresponding to the amount of hot water obtained by learning based on past use results. The present invention relates to a hot water supply apparatus that can be automatically operated so as to store heat until immediately before, while the heat storage amount can be changed and set manually by a user according to an actual schedule.

  Conventionally, in Patent Document 1, as a heat pump type hot water storage hot water heater, the amount of hot water used is heated up and stored in the middle of the night based on the amount of hot water set in advance, and if the amount of hot water in the hot water storage tank decreases, it is added during the day. A device for requesting a setting operation for determining whether or not to perform boiling is disclosed. If the user performs a setting operation to perform additional boiling, the amount of heat stored by boiling during midnight hours should be less than the set hot water volume, and additional boiling in the daytime must not occur. For example, if the set operation hot water amount is set to a small amount, or if a setting operation is performed not to perform additional boiling, the hot water will be heated to the set hot water amount at midnight to store heat. Has been proposed.

  In Patent Document 2, in a hot water supply device that combines a heat pump hot water storage hot water heater and an instantaneous heating combustion hot water heater, when hot water is filled into a bathtub using hot water in a hot water storage tank, past hot water filling is performed. It is disclosed that the accumulated time is accumulated and the boiling operation is performed before the hot water filling time based on the accumulated data to complete the heat accumulation in the hot water storage tank.

JP 2012-102983 A JP 2012-112594 A

  By the way, in a hot water supply device that combines a hot water storage type hot water heater and an instantaneous heating type combustion hot water heater, the heat storage amount corresponding to the expected hot water amount obtained by learning based on the past actual hot water amount actual data is stored before the start of use. When performing an automatic boiling operation based on learning to store heat in the tank, the following inconvenience may occur. That is, when an actual event different from daily life, for example, a visitor or a part of a family member goes on a trip, the amount of hot water used differs from the amount of hot water to be used based on learning. In this case, if there is a shortage of hot water storage, the combustion water heater will be controlled to increase boiling, while hot water storage will be wasted. For this reason, excessive energy consumption occurs, or heat is dissipated unnecessarily, leading to deterioration of efficiency.

  The present invention has been made in view of such circumstances, and the purpose of the present invention is to make it a real plan without extra energy consumption while receiving the convenience of automatic boiling operation based on learning. An object of the present invention is to provide a hot water supply device that can be used.

  In order to achieve the above object, according to the present invention, a hot water storage tank, heating means for storing hot water in the hot water storage tank by heating the hot water in operation, and learning based on the past record of the amount of hot water used Instantaneous heating type combustion hot water supply for a hot water storage type hot water heater comprising a control means for controlling the operation of the heating means so that the predicted use heat quantity within the period is stored before the scheduled use start time The following specific items were provided for the hot water supply device combined with a water heater. That is, a heat amount setting means for changing and setting the predicted expected heat quantity to be used to an actual expected heat quantity is provided. As the control means, a change setting operation of the expected heat quantity to be used is performed by the heat quantity setting means. In such a case, the operation of the heating means is controlled based on the actual amount of heat to be used that has been changed and set (claim 1).

  In the case of the present invention, the operation control of the heating means by the control means learns based on the past actual amount of hot water used, and the predicted use heat quantity within a predetermined period is stored in the hot water storage tank before the scheduled use start time. . On the other hand, even if an extraordinary actual schedule occurs, the user can change the actual amount of heat to be used by the user using the heat amount setting means according to the actual schedule. Heat is stored in the hot water storage tank before the start time. Thereby, it is not necessary to operate the instantaneous heating type combustion water heater. For this reason, it is possible to store heat by the heating means in correspondence with the actual schedule without accompanying extra energy consumption while receiving convenience by the automatic boiling operation based on learning.

  In the hot water supply apparatus of the present invention, as the heat quantity setting means, a guidance notification section for guiding and reporting information related to the predicted usage heat quantity can be provided. By doing in this way, the user can change the increase / decrease of the planned heat amount according to the actual planned event (for example, visitor schedule) etc. while referring to the planned heat amount based on the currently set learning. It becomes possible.

  Further, in the hot water supply apparatus of the present invention, the heat amount setting means is configured to accept the setting of information related to the type of the hot water tap to be used and the scheduled time value for using the hot water tap, Can be obtained by calculation based on the hot water supply temperature and flow rate information set in advance in the hot water tap that has been accepted and the scheduled time value that has been accepted (claim 3). This makes it easier for the user to make change settings. In other words, the user simply sets the type of hot water tap such as a shower (shower faucet) or washing (kitchen hot water tap) and the scheduled time value that will be used in practice, and automatically calculates the appropriate value. The amount of hot water to be used is changed and set.

  Furthermore, in the hot water supply apparatus of the present invention, it is assumed that a predetermined time is predicted as one unit as the predicted use amount of heat, and the unit is similarly set and changed for each unit as the actual use amount of heat, If the amount of heat to be used is changed and set, the time value at which hot water can be used in each hot water tap can be guided and notified for each type of hot water tap (Claim 4). By doing in this way, prediction of the amount of hot water to be used is predicted every time when the day is divided into the above units, and the amount of hot water to be used for each hour is changed and set. For this reason, it becomes possible to change and set more finely according to the user's actual schedule, and the usability is further improved. In addition, for the scheduled hot water volume to be changed, the time value at which hot water can be used in each hot water tap is notified for each type of hot water tap, making it easier to understand the change setting and changing the setting. Can be performed more accurately.

  As explained above, according to the hot water supply apparatus of the present invention, the operation control of the heating means by the control means learns based on the past actual amount of hot water used and starts using the predicted use heat quantity predicted within a predetermined period. While it is possible to store heat in the hot water storage tank before the time, even if an unforeseen actual schedule occurs, the user can change it to the actual scheduled heat usage by the heat amount setting means according to the actual schedule In addition, the scheduled use amount of heat based on the actual schedule can be stored in the hot water storage tank before the scheduled use start time. This eliminates the need to operate the instantaneous heating type combustion water heater, so that the heating means can be adapted to the actual schedule without extra energy consumption while receiving the convenience of automatic boiling operation based on learning. It will be possible to store heat.

  In particular, according to the hot water supply apparatus of the second aspect, the user is currently set by providing a guidance notification unit for guiding and notifying information related to the predicted usage heat amount as the heat amount setting means. It is possible to change the increase / decrease in the scheduled heat amount according to the actual planned event such as a visitor while referring to the planned heat amount based on the learning.

  Further, according to the hot water supply apparatus of claim 3, the heat quantity setting means is configured to accept the setting of information related to the type of the hot water tap to be used and the scheduled time value for using the hot water tap. For the user, the planned use amount of heat is obtained by calculation based on the hot water supply temperature and flow rate information preset in the hot water tap that has been accepted for setting and the expected time value that has been accepted for setting. Change settings can be made more easily. In other words, the user simply sets the type of hot water tap such as a shower (shower faucet) or washing (kitchen hot water tap) and the scheduled time value that will be used in practice, and automatically calculates the appropriate value. It becomes possible to make a change setting of the amount of hot water to be used.

  Further, according to the hot water supply apparatus of claim 4, it is assumed that the predicted use heat quantity is predicted for each unit with a predetermined time as one unit, and the actual use heat quantity is similarly changed and set for each unit. In addition, if the amount of heat to be used is changed and set, the time value at which each hot-water tap can be used can be guided and notified for each type of hot-water tap, thereby dividing the day into the above units. The estimated amount of hot water to be used is predicted every hour, and the amount of hot water to be used for each hour can be changed and set. For this reason, it is possible to change and set more finely according to the actual schedule of the user, and to improve usability. In addition, for the scheduled hot water volume to be changed and set, the time value at which hot water can be used in each hot water tap is informed and notified for each type of hot water tap, making the change setting guidelines easier to understand and changing settings. Can be performed more accurately.

It is a schematic diagram of the hot water supply apparatus which concerns on embodiment of this invention. It is a control block diagram of the hot-water supply apparatus of FIG. It is an expansion front explanatory view of the remote control of FIG.

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

  FIG. 1 shows a hot water supply apparatus according to an embodiment of the present invention, which is a combination of a heat pump hot water storage hot water heater and an instantaneous heating type hot water heater for backup (for auxiliary heat source). ing. This hot water supply apparatus includes a heat pump hot water storage hot water heater mainly composed of a heat pump operating system 2 and a hot water storage tank 3 as heating means, a water supply path 4 for supplying tap water to the hot water storage tank 3 and the like, and hot water storage A hot water supply path 5 for supplying hot water to the hot water tap 7 or the like using hot water heated by the hot water stored in the tank 3 or the instantaneous heating type combustion water heater 6, and a heating circuit 8 using the hot water from the hot water supply path 5 as a heating heat source, Similarly, a bath reheating circuit 9 that uses hot water from the hot water supply passage 5 as a reheating heat source and a controller 10 that controls the operation of the hot water supply device are provided. In FIG. 1, only one hot water tap 7 is shown, but this hot water tap 7 is only shown as a representative example. In fact, a kitchen hot water tap for uses such as washing items and a washroom hot water supply for uses such as a wash surface are shown. Shows a stopper, etc., and a shower faucet for a shower.

  The heat pump operating system 2 is for heating and warming the hot water in the hot water storage tank 3 to a predetermined temperature by the heat exchange heating with the exhaust heat of the heat pump 21 as the main heat source, and storing the hot water in the hot water storage tank 3. The heat pump operating system 2 includes the heat pump 21, a circulation pump 22, a boiling switching valve 23, an inlet side temperature sensor 24, and an outlet side temperature sensor 25. Then, at the time of the operation by the control by the controller 10, for example, heat is exchanged between the refrigerant at a high temperature in the heat exchanger for condensation (not shown) of the heat pump 21 and the water supplied from the bottom of the hot water storage tank 3 by the circulation pump 22. By doing so, water is heat-exchanged and heated, and the heated hot water is returned to the top of the hot water storage tank 3 to form a temperature stratification in the hot water storage tank 3 to be stored. At this time, information on the temperature difference between the hot water temperature from the bottom of the hot water storage tank 3 by the inlet side temperature sensor 24 and the hot water temperature after heat exchange heating by the outlet side temperature sensor 25, the refrigerant temperature on the heat pump 21 side, and boiling Based on the adjustment of the flow rate to the heat pump 21 side by the switching valve 23, operation control is performed so that the hot water temperature after the heat exchange heating returned to the top of the hot water storage tank 3 becomes a predetermined boiling temperature.

  The hot water storage tank 3 is hermetically sealed and has a heat insulating structure with the outside. The hot water storage tank 3 is not of a relatively large capacity (for example, 350 L to 500 L) capable of storing all the hot water used for one day. By controlling the hot water scheduled to be used for each predetermined time period to be heated up immediately before the use time, a relatively small capacity, for example, a capacity of about 90 L is sufficient. Hot water storage temperature sensors 31a, 31b, 31c, and 31d that detect internal hot water storage temperatures at the respective positions in the vertical direction are installed at predetermined positions in the vertical direction of the hot water storage tank 3.

  In the water supply channel 4, the upstream end of the main water supply channel 41 is connected to an external water supply or the like, and the downstream end is connected to the bottom of the hot water storage tank 3 via a check valve 42. A mixed water supply channel 44 branched from the upstream side of the main water supply channel 41 via a check valve 43 is connected to a first mixing valve 55 (to be described later) of the hot water supply channel 5 so that water can be supplied. Further, a branch water supply passage 45 branched from the downstream side of the main water supply passage 41 is connected to a second mixing valve 53 (to be described later) of the hot water supply passage 5 so that water can be supplied. Reference numeral 46 in FIG. 1 is a water supply temperature sensor that detects the temperature of water supplied through the water supply passage 4.

  The hot water supply path 5 includes an auxiliary heating path 51 through which hot water discharged from the top of the hot water storage tank 3 is supplied to the instantaneous heating type combustion water heater 6 for auxiliary heating, and hot water storage from which the hot water is directly discharged. It is possible to branch to the direct hot water supply path 52. The combustion hot water heater 6 burns gaseous fuel (for example, city gas) or liquid fuel (for example, kerosene) to instantaneously heat the hot water passed through the heat exchanger. The auxiliary heating path 51 leads hot water to the combustion hot water heater 6 through the second mixing valve 53 and the heating pump 54 that can be mixed with the feed water from the branch water supply path 45, and is auxiliary heated by the combustion hot water heater 6. The hot water outlet 60 is led to the first mixing valve 55 for final temperature control. At this time, hot water after auxiliary heating (auxiliary heated hot water) passes through a first proportional valve 56 with a closing function in a hot water outlet 60 between the combustion water heater 6 and the first mixing valve 55. The hot water storage direct hot water supply passage 52 can supply hot water to the first mixing valve 55 by having the downstream end join the hot water discharge passage 60 on the downstream side of the first proportional valve 56 at the junction 50. It has become. Reference numeral 58 in FIG. 1 is a hot water supply temperature sensor that detects the hot water supply temperature of hot water that is finally supplied at a downstream position of the first mixing valve 55, and reference numeral 59 is high-temperature water due to the occurrence of equipment abnormality or the like. This is a high-temperature hot water avoidance valve that is opened to supply water from the mixed water supply channel 44 to prevent and avoid hot water supply. Reference numeral 61 is a second proportional valve for hot water supply, and 62 is a post-heating temperature sensor for detecting the temperature of hot water after auxiliary heating by the combustion water heater 6.

  The heating circuit 8 heats the circulating heat medium for heating in the heating circuit 81 by liquid-liquid heat exchange in the heat exchanger 82, and the heated circulating heat medium is heated to a high-temperature heating terminal (for example, a bathroom dryer) 83, A low temperature heating terminal (for example, floor heating) 84 is circulated and supplied. And as the heating source (heating heating source) of the liquid-liquid heat exchange in the heat exchanger 82, the heated hot water discharged from the combustion hot water heater 6 or the non-actuated combustion hot water heater 6 was passed. Hot water in the hot water storage tank 3 is circulated and supplied to the heat source side of the heat exchanger 82. That is, hot water as a heat source is supplied as a heat source to the heat exchanger 82 through a heat source supply path 85 branched from the branch point 80 of the outlet hot water path 60 on the downstream side of the combustion water heater 6, and the temperature is lowered due to liquid-liquid heat exchange. Hot water is led out to the branch water supply passage 45 through the open / close solenoid valve 86 and, in normal times, led to the second mixing valve 53 through the branch water supply passage 45 and then to the combustion water heater through the heating pump 54. It is circulated such that it is returned to 6 and reheated. The circulating heat medium heated by the liquid-liquid heat exchange in the heat exchanger 82 is supplied to the high-temperature heating terminal 83 or the low-temperature heating terminal 84 to radiate heat, and then passes through the expansion tank 87 and the heating pump 88. It is returned to the heat exchanger 82 and reheated.

  The bath reheating circuit 9 operates the reheating pump 91 to circulate hot water in the bathtub 92 through the recirculation path 93 and the heat exchanger 94, and the liquid-liquid heat in the heat exchanger 94 is obtained. It is designed to heat up by exchanging. On the heat source side of the heat exchanger 94, similarly to the heating circuit 8, the heated hot water discharged from the combustion hot water heater 6 or the hot water in the hot water storage tank 3 is added through a heat source supply path 95 branched from the branch point 90. Hot water, which is circulated as a heating source for watering and whose temperature is lowered by the liquid-liquid heat exchange in the heat exchanger 94, is led out to the branch water supply passage 45 through the open / close solenoid valve 96. In the same manner as above, it is circulated so that it is returned to the combustion water heater 6 and reheated. A pouring passage 97 for diverting hot water after temperature regulation by the first mixing valve 55 is connected to the recirculation circulation passage 93, and the temperature is regulated via the pouring passage 97. After the hot water is supplied to the bathtub 92, the hot water filling can be performed. The hot water supply passage 97 is provided with a bath drop valve 98 (hot water filling means) comprising an electromagnetic on-off valve, and when the bath drop valve 98 is operated, that is, opened, a hot water supply path from the hot water storage tank 3 to the bathtub 92 is opened. Hot water can be poured into the bathtub 92.

  The above circuits 5, 8, and 9 constitute a heat load operating system 11 (see FIG. 2). The operation of the heat pump operation system 2 and the heat load operation system 11 is performed by outputting input setting signals and operation signals from the remote controller 101, and various temperature sensors 24, 25, 31a to 31d, 46, 58, 62. The operation of the controller 10 is controlled by receiving the output of the detection signal from the above. In particular, the boiling operation (heat storage operation) of hot water in the hot water storage tank 3 by the heat pump operating system 2 is performed immediately before the scheduled use start time (for example, 10 minutes) with respect to the scheduled use amount of hot water every predetermined time set based on learning. Operation control is performed by the operation control unit 102 each time so that the boiling is completed (heat storage is completed) by 20 minutes before). As a result, the heat loss is suppressed as much as possible to improve the efficiency, and the hot water storage tank 3 is made compact, and thus the entire device is made compact. In the present embodiment, the controller 10 and the remote controller 101 constitute a control means for controlling the heat pump operating system 2 as a means for heating hot water in the hot water storage tank 3. Although only one remote controller 101 is shown in FIG. 1, it is possible to provide two or more remote controllers such as a kitchen remote controller and a bathroom remote controller. The remote controller 101 is configured to be able to set the hot water supply temperature to the hot water tap 7 and the bathtub 92 by the user's operation, and the controller 10 uses the set temperature as the target temperature of the final hot water supply temperature. The mixing ratio of hot water and water in the first mixing valve 55 is controlled based on the detection value of the sensor 46 and the like. In addition, the remote controller 101 can change and set the scheduled amount of hot water to be used based on learning each time according to the actual schedule by a manual operation by the user. Is output to the operation control unit 102 via the change setting processing unit 105, and the scheduled use hot water amount based on learning that has already been set is rewritten to the actual scheduled use hot water amount. The remote controller 101 constitutes a heat storage amount setting means for setting and operating the heat storage amount in the hot water storage tank 3. Note that the change setting processing unit 105 can be provided not on the controller 10 side but on the remote controller 101.

  The controller 10 is mainly composed of a CPU and a microcomputer having a rewritable memory, and performs heat storage operation control and hot water supply control to the hot water storage tank 3 based on programs and various data stored in the memory. . Various types of control can be used in the prior art. In particular, in the present embodiment, the controller 10 includes a performance information storage unit 104 that stores past performance information on the amount of hot water used in connection with the heat storage operation control by the heat pump operation system 2. The track record information storage unit 104 can be provided, for example, for each day of the week. As track record information on the amount of hot water used on each day of the week, the hot water in the hot water storage tank 3 to the hot water tap 7, the heating circuit 8, the bath reheating circuit 9, and the bathtub 92 is provided. The actual value of the amount of hot water used for each day of the week and every predetermined time can be stored, and when auxiliary heating by the combustion water heater 6 is performed, the amount of hot water corresponding to this auxiliary heating amount is also used. Can be taken into account. The actual value of the amount of hot water used on each day of the week for each predetermined time can be set based on the actual amount of hot water used for the corresponding predetermined time on the same day in the past, and the controller 10 learns in order to respond to fluctuations in the user's lifestyle. Based on the detection value of a flow sensor (for example, a flow sensor indicated by reference numeral 63 in FIG. 1), the update unit 103 sets the actual amount of hot water used every predetermined time on the last day of the end. Calculated and acquired, the average value of the actual amount of hot water used every predetermined time corresponding to the acquired date and the actual value of the amount of hot water used every predetermined time of the corresponding day of the week is appropriately rounded, etc. Can be updated and stored as the actual value of the amount of hot water used for each predetermined time. The learning method of the actual amount of hot water used may be any other appropriate method, and is not limited to a specific learning method. Moreover, as the “predetermined time”, one day is divided every predetermined time, and the amount of hot water used is learned by using the divided predetermined time as one unit. In this embodiment, “1 hour” is used for simplicity. Is described below as one unit.

  Furthermore, the learning update unit 103 of the controller 10 predicts the scheduled usage amount for every hour corresponding to the next day based on the above-mentioned performance information of the amount of hot water used for every hour stored in the result information storage unit 104. The planned amount of use may be a planned amount of heat using a thermodynamic unit of heat such as joule (J) or calorie (cal), but in the hot water supply apparatus of the present embodiment, the hot water storage tank 3 is used. The hot water storage temperature (boiling temperature) is controlled to be a predetermined temperature such as 80 degrees Celsius (the same applies hereinafter), and the amount of stored hot water and the amount of stored heat have a substantially linear relationship. Therefore, the amount of hot water stored at a predetermined hot water storage temperature in the hot water storage tank 3 is regarded as the amount of heat stored, and the amount of hot water expected to be discharged from the hot water storage tank 3 on the next day is regarded as the expected heat amount of use. It is possible to control.

  The prediction of the amount of hot water to be used may be information that uses the hourly information on the day of the week corresponding to the day of the operation that is stored as the actual information of the amount of hot water to be used as the amount of hot water to be used. It may be predicted as the amount of hot water to be used every hour after being appropriately corrected based on the temperature of the water supply or the like, or may be corrected by taking into account the amount of heat released from the hot water storage tank 3 that varies depending on the season. Is possible.

  Based on the amount of hot water scheduled to be used for every hour of the next day determined in this manner, the controller 10 determines whether the heat storage / hot water of the amount of hot water to be used immediately before the scheduled time of use depends on the amount of hot water to be used for each hour. The heat pump operation system 2 is operated so as to complete the process so that heat is stored and stored in the hot water storage tank 3. For example, from the output (heat storage speed) of the heat pump operating system 2 and the amount of hot water remaining in the hot water storage tank 3, the required boiling time until the predicted amount of hot water is stored and stored is calculated and the scheduled use time starts The time required for boiling is calculated backward from the time, and a boiling start time is obtained by adding a little extra time to this, and the heat storage operation by the heat pump operating system 2 can be started from this boiling start time.

  In addition, the hot water supply apparatus according to the present embodiment has a large amount of hot water for a shower or the like when a large capacity hot water supply (washing, etc.) is required at a time such as a visitor or when a part of the family is planning to travel. Is configured so that the scheduled amount of hot water to be used set based on learning can be changed and set by a predetermined operation of the remote controller 101. Such a remote controller 101 constitutes a heat storage amount setting means. doing.

  An example of setting for changing the scheduled hot water volume using the remote controller 101 will be described with reference to the illustration of FIG. 3. The menu button 111 is pressed to select a hot water volume change from a menu screen (not shown), and the hot water volume used on the display unit 112 is selected. The schedule screen 120 is displayed. This hot water usage schedule screen 120 includes a graph display unit 121 that displays the learned hot water usage of today for each hour by a bar graph display in which the horizontal axis indicates the time and the vertical axis indicates the hot water amount, and the lower column includes the time axis and the time axis. A cursor display unit 122 that can be moved in parallel, a schedule information display unit 123 that displays information about the amount of hot water to be used for one hour at a specific time pointed by the cursor display unit 122 in the upper field, and a change A change information display unit 124 that similarly displays input information as text information when a setting input operation is performed is provided. The cursor display section 122 can be moved along the time axis by pressing the right movement button section 131 or the left movement button section 132 of the cross button 113. The cursor display section 122 is moved to the selected desired time and then presses the decision button section 133. For example, information about the amount of hot water to be used for one hour at the selected time is displayed on the schedule information display unit 123. In the example of FIG. 3, the cursor display unit 122 points to 8 o'clock in the morning, and the scheduled use amount of hot water for 1 hour at 8 o'clock is displayed as a guide on the schedule information display unit 123 as “schedule use amount of hot water 40L”. In the schedule information display section 123, a guide indicating how many minutes of washing or showering is possible is displayed together with the amount of hot water for 40L, such as “washing for 5 minutes or showering for 3 minutes”. For these conversions, for example, a calculation guideline is stored in the controller 10 in advance, such as a flow rate of 8 L / min at a set temperature of 38 degrees for a wash, and a flow rate of 13 L / min at a set temperature of 40 degrees for a shower. Based on this, it is converted and displayed. Such a schedule information display unit 123 constitutes a guidance notification unit for guiding and notifying information related to the predicted amount of heat to be used. Note that voice notification can also be performed as guidance notification instead of or in addition to the guidance display.

    In order to change and set the scheduled hot water usage amount, the cursor display unit 122 is moved so as to indicate the time to be changed and set, and the determination button portion 133 is pressed to correspond to the scheduled hot water usage for one hour corresponding to that time. The bar graph part to be selected is selected, and the up button 134 or the down button 135 of the cross button 113 is pressed to increase or decrease by a desired amount. Along with this increase / decrease, the change information display unit 124 displays the amount of hot water after the increase / decrease change. In the example of FIG. 3, the cursor display unit 122 points to 8 o'clock in the morning, and the bar graph unit 126 corresponding to the amount of hot water to be used for 1 hour from 8 o'clock is increased or decreased by the up / down button unit 134 or the down button unit 135. The amount of hot water corresponding to the amount of hot water to be used after the change is expanded or reduced on the upper side, and the changed hot water amount is displayed as guidance on the change information display section 124 as “changed set hot water amount 50 L”. An indication of how many minutes of washing or showering is possible is displayed on the change information display section 124, such as “washing 6.25 minutes or shower 3.8 minutes”, according to the amount of hot water for 50 L after the change. By such a change information display unit, it is possible to configure a guidance notification unit for guiding and reporting information related to the actual amount of hot water to be used.

  The change setting method of the scheduled hot water volume can be various. For example, when the remote controller 101 is provided with a hot water volume addition operation unit or a hot water volume reduction operation unit and operates these hot water volume addition operation units or hot water volume reduction operation units, it is constant. The amount of additional hot water (for example, the addition of heat for 10 L at the set hot water temperature) or the amount of reduced hot water (similarly, the reduction of heat for 10 L at the set hot water temperature) is added to or reduced from the original scheduled hot water volume to be used. Alternatively, when the additional hot water amount or the reduced hot water amount at the set hot water supply temperature is changed and set by arbitrarily specifying a numerical value with the remote controller 101, the additional or reduced heat storage amount corresponding to the set numerical value is calculated and set. Further, the amount of additional hot water or the amount of hot water to be reduced according to the setting item selected by the user selecting from a plurality of setting items prepared in advance may be set. It may be configured to be constant. In addition, the above-mentioned scheduled hot water volume (heat volume) is displayed individually for each scheduled usage time, or the hot water usage schedule of the entire scheduled hot water usage for the day is displayed, referring to this according to the user's actual schedule The desired change can be set and operated. In these cases as well, information on the usage guideline (a guideline indicating how many minutes the washing or showering is possible) with the changed amount of hot water can be displayed together.

  Further, the remote controller 101 is configured so that the user can specify the additional number of visitors by the customer, and when the additional number is specified by the user, a predetermined additional hot water amount is automatically set according to the additional number of people. Also good. For example, the amount of additional hot water in the case of shower + washing surface can be a value obtained by multiplying the estimated heat of use per person by the number of additional people. As a specific example, the amount of additional hot water = {(shower flow rate × shower time × set hot water temperature ) + (Washing flow rate × washing time × set hot water supply temperature)} × additional number of people. As a specific example, a shower can be (13 L × 5 minutes × 40 degrees) / 1 person. In addition, information related to the type of hot water tap 7 scheduled to be used on the remote controller 101 (for example, the type of kitchen hot water tap for washing or shower water tap for shower) and the scheduled time value for using this hot water tap 7 A setting operation unit is provided for accepting the setting, and based on the type of the hot water tap 7 input by the setting operation and the estimated time value for using it, the actual scheduled heat usage is calculated and obtained by calculation. It can also be. In this case, the scheduled use amount of heat may be obtained by calculation based on the hot water supply temperature and flow rate information set in advance in the hot water tap 7 for each application and the scheduled time value accepted. For example, a calculation guideline such as a flow rate of 8 L / min at a set temperature of 38 degrees for a kitchen hot water tap for washing, and a flow rate of 13 L / min at a set temperature of 40 degrees for a shower faucet are previously stored in the controller 10. It is only necessary to store and set the calculated amount of heat to be used by calculating using this calculation guideline, and to change and set it.

  According to the above embodiment, the heat storage / hot water storage of the scheduled hot water amount for every predetermined time based on learning can be completed in advance by the scheduled use start time by the automatic boiling operation, which is highly convenient for the user. Become. Moreover, since the amount of hot water to be used is predicted and set every predetermined time, and the heat storage and hot water storage for the amount of hot water to be used every predetermined time is completed immediately before the scheduled start time of use, the entire daily use Compared with the case where the scheduled amount of hot water is stored and stored in the midnight time zone in advance, the hot water storage tank 3 with a small capacity can be made compact, and the heat dissipation loss can be suppressed as much as possible. Furthermore, since the heat amount setting means using the remote controller 101 can change and set the scheduled hot water amount for every predetermined time based on the learning according to the user's actual schedule, While enjoying convenience by automatic boiling operation based on learning based on actual use, heating operation of the heat pump operating system 2 is also taken into account in consideration of user convenience due to the occurrence of extraordinary events caused by actual schedules. It can be carried out. As a result, it is no longer necessary to perform the combustion operation of the combustion water heater 6 that has conventionally been operated for the shortage of the heat storage amount (hot water storage amount) based on extraordinary fluctuations, thereby reducing energy consumption accordingly. Can do. In addition, it is possible to avoid generation of useless heat dissipation loss when the heat storage amount (hot water storage amount) becomes excessive, and to improve the thermal efficiency.

<Other embodiments>
The present invention is not limited to the above-described embodiment, but includes other various embodiments. For example, as a heating means, it is possible to employ an electric heater although the power efficiency is inferior instead of a heat pump. Also, controlling the operation of the heat pump operating system 2, which is a heating means, so that the planned use amount of heat for a predetermined period learned and predicted based on the past amount of hot water used is stored before the scheduled use start time. In addition, heat is stored before the scheduled use start time, and after the start of use, the heat storage operation is continued and the heat storage operation (boiling operation of hot water in the hot water storage tank 3) is performed while using hot water. The control state is also included.

2 Heat pump operation system (heating means)
3 Hot water storage tank 10 Controller (control means)
101 Remote control (control means, heat quantity setting means)
123 Schedule information display part (guidance notification part)

Claims (4)

A hot water storage tank, a heating means for storing hot water in the hot water storage tank by heating the hot water in the hot water storage tank during operation, and learning based on the actual amount of hot water used in the past, and the expected heat usage within a predetermined period In a hot water supply apparatus that combines a hot water storage type hot water heater provided with a control means for controlling the operation of the heating means so that heat is stored before the scheduled start time,
A calorific value setting means for performing a change setting operation to an actual planned calorific value with respect to the predicted calorific value;
The control means is configured to control the operation of the heating means on the basis of the actual scheduled use amount of heat that is changed and set when the change setting operation of the expected use amount of heat is performed by the amount of heat setting means.
A water heater characterized by that. The hot water supply apparatus according to claim 1,
The heat quantity setting means is a hot water supply apparatus provided with a guidance notification unit for guiding and notifying information related to the predicted amount of heat to be used. In the hot water supply apparatus according to claim 1 or claim 2,
The calorific value setting means is configured to accept a setting of information related to a type of a hot water tap to be used and a scheduled time value for using the hot water tap,
The actual amount of heat to be used is configured to be obtained by calculation based on the hot water supply temperature and flow rate information preset in the hot water tap that has been accepted for setting and the expected time value for which the setting has been accepted. , Water heater. In the hot-water supply apparatus in any one of Claims 1-3,
The predicted use heat quantity is predicted for each unit with a predetermined time as one unit, and the actual use heat quantity is also changed and set for each unit.
A hot water supply apparatus configured to provide guidance and notification of a time value at which hot water can be used in each hot-water tap for each type of hot-water tap if the change setting operation is scheduled to be used.

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