JP2007285607A - Hot water storage type water heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot water storage type water heater capable of improving energy saving property by executing reboiling operation according to a use pattern. <P>SOLUTION: A controller 200 includes a hot water discharge quantity storing means 246 for storing a hot water discharge quantity as data, a boiling target heat quantity calculation means 203 for calculating a boiling target heat quantity from the data stored by the hot water discharge quantity storing means 246, a required hot water storage quantity calculation means 205 for calculating a required hot water storage quantity in a hot water storage side of a hot water storage tank 1 from the boiling target heat quantity, a hot water discharge forecasting means 202 for forecasting a hot water discharge in large quantity by conducting a learning control from the data stored by the hot water discharge quantity storing means 246 and a first re-boiling means 233 for conducting a re-boiling operation for storing hot water for hot water supply of required hot water storage quantity in the hot water storage side of the hot water storage tank 1 by actuating a heat pump unit 2 before discharging the large quantity of hot water forecasted by the hot water discharge forecasting means 202. Thus, it is possible to improve the energy saving property. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hot water storage hot water supply apparatus including a hot water storage tank for storing hot water for hot water boiled by a heating means, and in particular, when predicting large hot water obtained by learning control from past hot water data. It relates to the control of boiling operation.

  Conventionally, as this type of hot water storage type hot water supply apparatus, for example, as shown in Patent Document 1, a hot water storage tank for storing hot water for hot water supply and a heating means for boiling up hot water for hot water supply in the hot water storage tank are provided. Stores the amount of hot water used for hot water supply from the hot spring side during the period, performs learning control from the amount of hot water used to predict the amount of heat required to be used in a day, and heats that required amount of heat before midnight A boiling operation for operating the means is performed to store in the hot water storage tank.

Outside the midnight time zone, when the amount of hot water stored in the hot water storage tank becomes equal to or less than a predetermined amount, a reheating operation is performed to activate the heating means so that hot water does not run out.
JP 2002-168524 A

  However, according to the above-mentioned Patent Document 1, there is a case where it takes a long time to store hot water for hot water supply in a hot water storage tank until it is used after being stored. In such a case, there is a problem that heat loss from the hot water storage tank is increased and energy saving is lowered.

  In addition, when the prediction is wrong and the amount of remaining hot water is increased, it is heated twice for the next day, and there is a problem that energy saving and COP (coefficient of performance) are lowered.

  Then, the objective of this invention is providing the hot water storage type hot-water supply apparatus which can perform the boiling increase operation according to a usage pattern and can improve energy saving property.

In order to achieve the above object, the technical means according to claims 1 to 16 are employed. That is, in the invention described in claim 1, water is supplied from the water supply source to the water supply side, the hot water storage tank (1) for storing hot water for hot water supply to the hot water storage side, and hot water that has been taken up from the water supply side and boiled up. A heating means (2) for feeding to the hot water storage side or the hot water side, and a control means (200) for controlling the heating means (2),
The control means (200) calculates the amount of tapping water or the amount of tapping heat more than a predetermined value used for hot water supply from the tapping side at least within the unit period, and stores the tapping amount or tapping heat amount as data. 246),
A boiling target heat amount calculating means (203) for calculating a boiling target heat amount from the data stored in the tapping amount storage means (246);
A required hot water storage amount calculating means (205) for calculating a required hot water storage amount stored in the hot water storage side of the hot water storage tank (1) based on the boiling target heat amount calculated by the boiling target heat amount calculation means (203);
Hot water prediction means (202) for predicting large hot water by performing learning control from the data stored in the hot water storage means (246),
Prior to pouring the large hot water predicted by the hot water prediction means (202), the heating means (2) is operated and hot water for hot water supply of the required hot water storage amount calculated by the required hot water storage amount calculation means (205) is stored in the hot water storage tank ( And 1) a first reheating means (233) for performing reheating operation for storing on the hot water storage side.

  According to the present invention, the hot spring prediction is performed by the hot water prediction means (202), and the shortage of the amount of hot water generated by the hot water is stored in the hot water storage side of the hot water storage tank (1) before the hot water is discharged. it can. That is, it is possible to secure the required amount of hot water according to the actual use in the hot water storage tank (1) as the required hot water storage amount in advance.

  Accordingly, the storage time for storing hot water in the hot water storage tank (1) can be shortened, so that heat loss can be reduced and energy saving can be improved. In addition, since only the shortage of the amount of heat discharged when the large hot spring is discharged is stored in the hot water storage tank (1) before the large hot water is discharged, the required hot water storage amount can be greatly reduced. Thereby, it can be set as the hot water storage tank (1) with a small capacity.

According to the second aspect of the present invention, when the large hot water predicted by the hot water prediction means (202) is poured into the control means (200), the hot water heated by the heating means (2) is discharged. A second boiling means (243) for performing a boiling increase operation to be fed to the side, and a predicted heat quantity calculating means (204) for calculating the amount of hot water discharged by the second boiling means (243) or the predicted heat quantity of the discharged hot water. Have
The required hot water storage amount calculation means (205) is calculated by the predicted heat amount calculation means (204) from the amount of hot water calculated by the boiling target heat amount calculation means (203) or the sum of the hot water amount and the preset minimum hot water storage amount. It is characterized by obtaining the required hot water storage amount by subtracting the predicted heat amount.

  According to the present invention, when the large hot water is required, the second boiling means (243) performs the boiling increase operation, so that it is possible to reduce the necessary hot water storage amount before the large hot water is discharged. As a result, the heat loss can be further reduced and the energy saving can be improved as compared with the first aspect described above.

  In the invention according to claim 3, the control means (200) maintains the preset minimum hot water storage amount at a time other than before the large hot water predicted by the hot water prediction means (202) is discharged. It is characterized by having a third reheating means (213) for performing a reheating operation for operating the heating means (2) and sending hot water boiled up to the hot water storage side. According to this invention, even if hot water other than large hot water is frequently used, it can be covered with the minimum amount of stored hot water.

  In the invention according to claim 4, the first, second, and third heating means (233, 243, 213) are heated at least during the time period when the charge setting is high when there are different time periods. It is characterized by operating the means (2). According to the present invention, when the hot water is poured out, it is generally a time zone in which the charge setting is high, so that energy saving can be improved as compared with operation and storage in a time zone in which the charge setting is low.

  In the invention according to claim 5, the first boiling means (233) subtracts the amount of hot water or the amount of heat discharged from the hot water storage amount or the amount of remaining hot water obtained by the boiling target heat amount calculation means (203) from the amount of hot water stored or the amount of remaining hot water. Alternatively, the amount of heat required is calculated, and the time required for the boiling is subtracted from the hot water time when the hot water predicted by the hot water prediction means (202) is discharged, and the hot water operation is started before that time. It is said. According to this invention, it is possible to ensure in the hot water storage tank (1) as a necessary hot water storage amount before pouring out the large hot water. This prevents hot water from running out.

  In the sixth aspect of the present invention, the first boiling means (233) subtracts the amount of hot water or the amount of discharged hot water obtained by the boiling target heat amount calculating means (203) from the current amount of stored hot water or the amount of remaining hot water, and predicts it. The amount of hot water calculated by the hot water prediction means (202) is calculated by adding the predicted heat amount calculated by the heat amount calculation means (204) to determine the shortage or shortage of heat, and the hot water predicted by the hot water prediction means (202) is discharged. It is characterized by subtracting from, and starting the boiling operation from before that time.

  According to the present invention, in the same manner as in the fifth aspect, it is possible to ensure the required amount of hot water in the hot water storage tank (1) before pouring out the large hot water. This prevents hot water from running out.

  In the invention according to claim 7, the hot water storage means (246) stores the hot water used for hot water supply from the hot water side as hot water of a predetermined value or more or the hot water of the hot water at a time. It is characterized in that the hot water is finished once, and when it is intermittent, hot water is stored as a hot water per time within a predetermined time.

  According to the present invention, large hot water can be regarded as a group of a certain range. For example, it is possible to detect hot water that cannot be heated by heating means (2) such as filling hot water in a bathtub or using a shower that consumes a large amount of hot water.

  In the invention described in claim 8, the hot water storage means (246) stores the hot water used for hot water supply from the hot water side as a hot water amount of a predetermined amount per unit time or a hot water amount of the hot water. It is characterized by.

  According to the present invention, for example, it is possible to detect hot water that cannot be heated by heating means (2) such as filling hot water in the bathtub and using a shower that consumes a large amount of hot water.

  In the invention as set forth in claim 9, the tapping amount storage means (246) stores the tapping amount or tapping heat amount data for which the unit period is equal to or more than a predetermined value in one day, and data for a past predetermined period. The hot water prediction means (202) obtains large hot water per time from the data for a predetermined period in the past in the order of the amount of hot water discharged per day or the amount of discharged hot water, and the amount of hot water discharged or the amount of discharged hot water is determined in the past. It is characterized by predicting large hot springs by performing learning control as an average value to a maximum value for a period.

  According to this invention, for example, when the past predetermined period is set to one week, it is possible to accurately predict the predicted daily hot water based on the data of the large hot water in that week. In addition, by taking the maximum value including the standard deviation in addition to the average value, it is possible to pour out hot water without running out of hot water.

  In the invention according to claim 10, the hot water prediction means (202) predicts the hot water discharge time of large hot water per time by performing learning control as an average value to a maximum value from data for a predetermined period in the past. It is a feature.

  According to the present invention, it is possible to predict the amount of hot water discharged from the second boiling means (243) depending on the hot water time. For example, if the tapping time is relatively long, the amount of tapping heat can be compensated for by increasing the boiling time by the heating means (2) during that time.

  In the invention described in claim 11, the hot water prediction means (202) predicts the hot water discharge time of the large hot water per time by performing learning control from the data for the past predetermined period as the earliest hot water time. It is said. According to the present invention, since the probability of exceeding the earliest hot water time is small, the occurrence of large hot water that runs out of hot water does not hesitate.

  The invention according to claim 12 is characterized in that the tapping hot water predicting means (202) predicts large tapping water by performing learning control by classifying the data for a predetermined period of time according to time zones. According to the present invention, prediction of large hot water can be made accurately. Moreover, it can be set as the hot water storage tank (1) with a small volume.

  In the invention according to claim 13, the control means (200) raises the heating means (2) during the boiling operation by the first, second, and third boiling means (233, 243, 213). It is characterized in that the temperature can be varied as required. According to this invention, the boiling operation of the heating means (2) can be performed at the boiling temperature corresponding to the predicted large hot water. Further, the COP can be improved.

  In the invention according to the fourteenth aspect, the control means (200) raises the heating means (2) during the boiling operation by the first, second and third boiling increase means (233, 243, 213). It is characterized by the ability to vary as needed. According to this invention, the boiling operation of the heating means (2) can be performed with the boiling capacity according to the predicted large hot water. Further, the COP can be improved.

  In the invention of claim 15, the second boiling means (243) is a large amount of hot water for discharging the amount of hot water or the amount of discharged hot water of a predetermined value or more per unit time, and less than a preset minimum hot water storage amount. At this time, the heating means (2) is operated to start boiling-up operation in which boiling water is sent to the outlet side. According to the present invention, when there is an unexpected large hot water, it is possible to cope with the hot water storage without causing the hot water to run out.

  In the invention according to claim 16, the control means (200) is configured to increase the amount of tapping water or the amount of tapping heat greater than a predetermined ratio when the predicted tapping time of the large tapping water elapses or at the predicted tapping time. When the hot water is discharged, prediction of large hot water after the current time is executed. According to this invention, the switching for the next predicted large hot water can smoothly transition.

  In addition, the code | symbol in the bracket | parenthesis of each said means shows a corresponding relationship with the specific means of embodiment mentioned later.

(First embodiment)
Hereinafter, the present invention is applied to a hot water storage type hot water supply apparatus in which a heat pump unit 2 composed of a heat pump cycle and a hot water storage tank 1 are combined as a heating means, and will be described with reference to FIGS. FIG. 1 is a schematic diagram showing an overall configuration of a hot water storage type hot water supply apparatus in the first embodiment.

  The hot water storage type hot water supply apparatus of this embodiment is used for general households, and has a hot water supply function for hot water stored in the hot water storage tank 1 to a kitchen, a washroom, a bathroom, and the like. As shown in FIG. 1, the hot water storage type hot water supply apparatus includes a hot water storage tank 1, a water supply pipe 12 that is a water supply path, first and second outlet pipes 14 and 19 that are outlet paths, and a hot water supply pipe 17 that is a hot water path, It is composed of mixing valves 15 and 16 as mixing means, a heat pump unit 2 as heating means, a control device 200 as control means, and the like.

  Reference numeral 1 denotes a metal (for example, stainless steel) hot water storage tank having excellent corrosion resistance, and a heat insulating material (not shown) is arranged on the outer peripheral portion, so that hot water for hot water supply can be kept warm. The hot water storage tank 1 has a vertically long shape, and an introduction port 11 is provided on the bottom surface thereof, and a water supply pipe 12 that is a water supply path for introducing tap water into the hot water storage tank 1 is connected to the introduction port 11.

  The water supply pipe 12 is provided with a water supply thermistor 75 as temperature detection means, and temperature information in the water supply pipe 12 is output to the control device 200 described later. Further, the water supply pipe 12 is provided with a pressure reducing valve 51 for adjusting the water pressure of the introduced tap water to a predetermined pressure. The water supply thermistor 75 and the pressure reducing valve 51 of the water supply pipe 12 are branched downstream from the position where the water supply thermistor 75 and the pressure reducing valve 51 are provided, and are connected to a hot water supply mixing valve 16 described later.

  On the other hand, a first outlet 13 is provided at the top of the hot water storage tank 1, and an outlet pipe 14, which is an outlet path for leading out hot water in the hot water tank 1, is connected to the first outlet 13. Yes. A discharge pipe 52 provided with a relief valve 53 is connected in the middle of the route of the lead-out pipe 14, and when the pressure in the hot water storage tank 1 rises above a predetermined pressure, the hot water in the hot water storage tank 1 is externally connected. The hot water storage tank 1 and the like are not damaged.

  In addition, a second outlet 18 is provided at an intermediate portion of the hot water storage tank 1, and the second outlet 18 is used to lead out a medium-temperature hot water whose temperature is lower than that of the hot water in the hot water storage tank 1. A lead-out pipe 19 that is a path is connected. A high / medium temperature mixing valve 15 serving as a mixing unit is provided at a downstream side joining portion of the outlet pipe 14 and the outlet pipe 19.

  The high / medium temperature mixing valve 15 adjusts an opening area ratio (a ratio of a hot water side opening degree communicating with the outlet pipe 14 and a hot water side opening degree communicating with the outlet pipe 19), which is a mixing ratio. The mixing ratio of the hot water from the hot water and the medium hot water from the outlet pipe 19 can be adjusted.

  The high / medium temperature mixing valve 15 is an electric valve that adjusts the opening degree of each path by driving a valve body by a drive source such as a servo motor. The hot water storage thermistor 32, the hot water temperature thermistor 73, and the boiling temperature thermistor described later. Based on the temperature information detected from 74, it is operated by a control signal from the control device 200 described later, and the operating state is output to the control device 200.

  The hot water thermistor 73 is provided on the outlet side of the high / medium temperature mixing valve 15 and detects the hot water temperature of the hot water mixed by the high / medium temperature mixing valve 15. A hot water supply pipe 17 is connected to the outlet side of the high / medium temperature mixing valve 15. The hot water supply pipe 17 is a hot water supply pipe that guides hot water of hot water adjusted to a set temperature to a hot water faucet, a shower faucet, etc. (not shown) provided in a downstream use terminal, and is in the middle of the flow path. Further, a hot water supply mixing valve 16, a hot water supply thermistor 71, and a flow rate counter 73 are provided.

  The hot water supply mixing valve 16 adjusts the opening area ratio (ratio of the opening degree on the hot water side derived from the high / medium temperature mixing valve 15 and the opening degree on the water side supplied from the water supply pipe 12) as a mixing ratio. Thus, the mixing ratio of hot water from the high / medium temperature mixing valve 15 and water from the water supply pipe 12 can be adjusted.

  The hot water supply mixing valve 16 is an electric valve that adjusts the opening degree of each path by driving a valve body by a drive source such as a servo motor, and is detected by a water supply thermistor 75, a hot water temperature thermistor 73, and a hot water supply thermistor 71. Based on the temperature information, the hot water storage thermistor 32, the hot water temperature thermistor 73, and the boiling temperature thermistor 74, which will be described later, operate according to a control signal from the control device 200, which will be described later, and control the operating state. The data is output to the apparatus 200.

  A hot water supply pipe 17 which is a hot water supply route to a faucet, a shower, a bath and the like is connected to the outlet side of the hot water supply mixing valve 16. The hot water supply pipe 17 is provided with a hot water supply thermistor 71 as hot water supply temperature detection means and a flow rate counter 72 as hot water discharge amount detection means. The hot water supply thermistor 71 shows temperature information in the hot water supply pipe 17 and a flow rate counter 72 shows. The flow rate information in the hot water supply pipe 17 is output to the control device 200 described later.

  The flow rate counter 72 detects the amount of hot water discharged from the hot water supply pipe 17 flowing through the hot water supply pipe 17 and detects the presence or absence of supply of mixed hot water flowing through the hot water supply pipe 17 based on the amount of hot water supplied. Information is output to the control device 200 at the speed of the pulse signal.

  Further, a hot water thermistor 32 for detecting the hot water temperature in the upper part of the hot water storage tank 1 is provided on the upper outer wall surface of the hot water storage tank 1, and the temperature information of the hot water discharged from the outlet 13 will be described later. The data is output to the apparatus 200.

  In addition, a plurality of (six in this example) water level thermistors 33a to 33f are arranged on the outer wall surface of the hot water storage tank 1 at substantially equal intervals in the vertical direction, so that the water filled in the hot water storage tank 1 at each water level level. The temperature information is output to the control device 200 described later.

  Therefore, the control device 200 detects the boundary position between the hot water heated up in the hot water storage tank 1 and the water before boiling in the hot water storage tank 1 based on the temperature information from the water level thermistors 33a to 33f. It can be done. The water level thermistor 33 c is provided in substantially the same height direction as the second outlet 18 and is a means for detecting the hot water temperature in the intermediate portion in the hot water storage tank 1.

  On the other hand, a suction port 21 for sucking water in the hot water storage tank 1 is provided at the lower part of the hot water storage tank 1, and a discharge port 22 for discharging hot water into the hot water storage tank 1 is provided on the upper side surface of the hot water storage tank 1. Is provided. The suction port 21 and the discharge port 22 are connected by a circulating water circuit 20, and a part of the circulating water circuit 20 is disposed in the heat pump unit 2.

  And in the part arrange | positioned in the heat pump unit 2 of the circulating water circuit 20, the circulating pump and the water refrigerant | coolant heat exchanger which are not shown in figure are provided. The circulation pump generates a water flow so that water is sucked from the suction port 21 provided at the lower part of the hot water storage tank 1 and passed through the water-refrigerant heat exchanger and returned to the discharge port 22 provided at the upper part of the hot water storage tank 1. It is a pump to make it.

  The circulation pump can adjust the flow rate according to the number of rotations of the built-in motor, and is controlled by the control device 200. One water-refrigerant heat exchanger heats the water in the hot water storage tank 1 sucked from the suction port 21 by heat exchange with the high-temperature refrigerant, and returns the water into the hot water storage tank 1 from the discharge port 22 to thereby store the water in the hot water storage tank 1. Water can be boiled into hot water.

  Furthermore, the circulating water circuit 20 on the downstream side of the heat pump unit 2 is provided with a three-way valve 25 that is a distributor. The three-way valve 25 switches between hot water boiled by the heat pump unit 2 to either the hot water storage side of the hot water storage tank 1 or direct delivery to the hot water discharge side bypassing the hot water storage tank 1.

  More specifically, one outlet of the three-way valve 25 is connected to communicate with the discharge port 22, and the other outlet is connected to the outlet pipe 19 that connects the high / medium temperature mixing valve 15 and the second outlet 18. Has been. That is, the middle of the outlet pipe 19 is branched, and the branch point is connected to the other outlet of the three-way valve 25 by the connection pipe 26.

  Thereby, the hot water boiled by the heat pump unit 2 is stored in the hot water storage tank 1, and the hot water boiled by the heat pump unit 2 can be sent to the hot water supply pipe 17 on the outlet side. In addition, the code | symbol 74 shown in the figure is the boiling temperature thermistor which detects the boiling temperature of the hot water boiled by the heat pump unit 2, and outputs the temperature information to the control apparatus 200 mentioned later. .

  Next, the heat pump unit 2 that heats the water taken in from the water supply side of the hot water storage tank 1 uses a supercritical heat pump cycle in which, for example, carbon dioxide gas is used as a refrigerant so that the refrigerant pressure on the high-pressure side becomes equal to or higher than the critical pressure of the refrigerant. Is used.

  As is well known, this heat pump cycle includes refrigeration cycle functional parts such as a compressor, a water refrigerant heat exchanger, an expansion valve, an evaporator, and an accumulator (not shown). Incidentally, the compressor (not shown) is driven by a built-in electric motor (not shown), compresses the gaseous refrigerant sucked from the accumulator to a critical pressure or more, and discharges it.

  A water-refrigerant heat exchanger (not shown) exchanges heat between refrigerant and hot water. For example, a refrigerant passage through which refrigerant flows and a heating fluid passage through which hot water flows are provided in a double-pipe structure, and It is a counterflow type heat exchanger comprised so that the flow direction of a refrigerant | coolant and the flow direction of the hot water supply water may oppose.

  The expansion valve (not shown) depressurizes the refrigerant flowing out of the water heat exchanger and supplies it to the evaporator (not shown). An evaporator (not shown) evaporates the refrigerant decompressed by an expansion valve (not shown) by heat exchange with the atmosphere. An accumulator (not shown) gas-liquid separates the refrigerant flowing out of the evaporator, sucks only the gas-phase refrigerant into the compressor, and stores excess refrigerant in the cycle.

  The heat pump unit 2 is operated by a control signal from a control device 200 described later, and outputs an operation state to the control device 200.

  Then, AC power is used as a power source, and hot water in the hot water storage tank 1 is boiled by using late-night power mainly in the late-night time zone (for example, 23: 00 to 7:00 the next morning) where the charge setting is cheap. While storing in the hot water storage side of the tank 1, the hot water heated by the heat pump unit 2 is sent to the hot water side in the case of large hot water (described later).

  The control device 200, which is a control means, is mainly composed of a microcomputer, and a built-in ROM (not shown) is provided with a preset control program. Receives temperature information, flow rate information, pressure information, signals from the heat pump unit 2 and the like from sensors.

  Then, based on signals such as temperature information from each of the thermistors 32, 33a to 33f, 71, 73, 74, 75 and flow rate information from the flow rate counter 72, the heat pump unit 2, the mixing valves 15, 16, the three-way valve 25, etc. Is configured to control. An operation panel (not shown) is installed in the vicinity of a place where hot water is used such as in a bathroom or kitchen, and the operation panel other than the operation panel is installed in a suitable place such as outdoors.

  In the present embodiment, the high / medium temperature mixing valve 15 as the mixing means is provided at the downstream side joining portion of the outlet pipe 14 and the outlet pipe 19, but the present invention is not limited to this, and is a three-way valve that switches the flow direction. Also good. According to this, the hot water in the hot water storage tank 1 is switched to either hot water or medium hot water, and either hot water in the hot water storage tank 1 or hot water heated up by the heat pump unit 2 is selected. Can do.

  Next, the operation of the hot water storage type hot water supply apparatus having the above configuration will be described with reference to FIGS. FIG. 2 is a time chart showing the operation of the hot water storage type hot water supply apparatus in the first half of the day (20:00 to 14:00), and FIG. 3 is a hot water storage type hot water supply in the second half of the day (14:00 to 2:00). It is a time chart which shows the action | operation of an apparatus.

  FIG. 4 is a flowchart showing a control process in the additional heating operation of the control device 200 based on the prediction of the heat pump unit 2. Fig.5 (a) is explanatory drawing which shows the setting reference | standard of the hot water storage means 246 in the learning control of large hot water, and FIG.5 (b) is a time chart which shows the operation | movement form.

  In the present embodiment, a large hot water that will run out of hot water if the hot water of the minimum hot water storage amount is not stored in the hot water storage side of the hot water storage tank 1 is predicted by learning control. The heating pump unit 2 is controlled to perform a reheating operation.

  More specifically, at least the amount of tapping or tapping heat, the tapping time, tapping time, tapping time, etc. of the large tapping hot water that produces a tapping amount or tapping heat amount exceeding a predetermined value within a unit period (for example, one day) is stored as tapping data. Keep it. At this time, the hot water that can be covered only by the heating operation by the heat pump unit 2 and the small amount of hot water that can be covered by the amount of hot water stored in the hot water storage tank 1 are not stored.

  Then, from the stored hot water data for a predetermined period in the past (for example, one week), the hot spring time of the hot spring on the day, the amount of hot water or the amount of hot water is predicted, and the amount of hot water required for the predicted hot spring is determined. Prior to the large hot water, the hot water heated by the heat pump unit 2 is heated to the hot water storage side of the hot water storage tank 1 and the reheating operation is performed.

  In other words, the present embodiment is a method different from the method of storing a large amount of hot water storage equivalent to the amount of heat used on the day, and is necessary in the hot water storage tank 1 whenever necessary. The hot water storage amount is stored. Then, when a large amount of hot water is discharged so as to reduce the capacity of the stored hot water as much as possible, the hot water that is heated by the heat pump unit 2 is sent to the hot water supply pipe 17 on the hot water supply side. I try to drive.

  Furthermore, the minimum amount of hot water stored in the hot water storage tank 1 is monitored, and when the minimum amount of hot water stored is less than a predetermined amount, the third boiling point for storing hot water heated by the heat pump unit 2 on the hot water storage side of the hot water storage tank 1 is added. The heating operation which is a means is performed.

  By the way, in a general home with about 4 family members, if you have a large amount of hot spring water that produces a hot water or a hot water that exceeds a predetermined value, you can use a hot water filling in the bathtub or a large amount of hot water in the shower. It is time to do. In addition, the usage pattern of the large hot springs is generally concentrated after the evening.

  Therefore, FIGS. 2 and 3 are for hot water supply in a general home of about 4 families, with a total amount of hot water of 500 L or a hot water amount of 15000 Kcal (42 ° C. hot water and water supply temperature of 12 ° C.) per day. The operation pattern learned when used as a time chart is shown in a time chart, and the day is divided into two parts, 2:00 to 14:00 and 14: 0 to 2:00.

  And when it becomes 2:00 every day, the hot spring out of the large hot spring on that day is predicted. In this example, there is no opportunity for a large hot spring in the first half of the day (20:00 to 14:00), and there is a large hot spring after the evening. Therefore, in the first half of the day, as shown in FIG. 2, if the end time of the time zone with the lowest price setting is 7:00 am, half of the expected usage amount is reduced to the time zone with the lower price setting. In addition, the heat pump unit 2 is operated to perform a boiling increase operation by the first boiling means to store hot water.

  More specifically, a hot water supply amount of 150 L is secured as a necessary hot water storage amount by heating up the amount of hot water for half a day (7500 Kcal or more) before the end time (7:00 am) of the time zone where the charge setting is cheap. In addition, the boiling temperature shown to (b) in the figure at this time boils at 65 degreeC (for example, (65 degreeC-12 degreeC) x150L = 7950Kcal). Moreover, the driving capability shown to (a) in the figure of the heat pump unit 2 operates at 6 kW which is a half of the maximum capability.

  Since it is only necessary to boil up before the end time (7:00 am) of the time zone where the fee setting is cheap, the operation is performed with a low capacity which is a better COP (performance efficiency). In addition, although the amount of calorie for half a day (7500 Kcal or more) was boiled here, it is not limited to this, and it may be boiled more or less.

  In addition, although the boiling temperature is boiled at 65 ° C. here, the present invention is not limited to this, and when the boiling temperature is increased to 90 ° C. and the boiling operation is performed at a higher temperature, the electricity charge can be reduced. Moreover, the amount of hot water calculated and the amount of hot water shown in (e) and (f) in the figure indicate the hot water conditions other than the large hot water, and at this time, the amount of hot water stored is covered.

  Then, as shown in FIG. 3, when the second half of the day (14:00 to 2:00), the predicted hot spring time of the hot springs is 20:00 and 23:00, and 20:00 In the case of, for example, it is a hot spring when hot water is filled in the bathtub, and in the case of 23:00, it is a large amount of hot water by shower.

  Then, by the first heating means for storing the hot water boiled up by the heat pump unit 2 at the hot water storage side of the hot water storage tank 1 at 19:00, for example, at 19:00 before the predicted hot spring time of the hot spring hot water. A certain warming operation is performed.

  When the predicted hot spring time (20:00) of the large hot spring is reached, if there is a hot water amount or a hot water amount equal to or greater than a predetermined value, the hot water heated by the heat pump unit 2 is the hot water supply pipe on the hot water side. The hot water filling operation is performed to supplement the hot water filling.

  Then, in the second predicted large hot spring after that, the amount of hot water required for the large hot spring is stored before the hot spring time, and the predicted hot spring time of the hot spring (23:00) is reached. In addition, a large amount of hot water discharged from the shower is supplemented by the additional heating operation that is the second additional heating means.

  In addition, when it becomes less than the minimum hot water storage amount (for example, 50 L) of 17:00, 10:00 at times other than large hot water, for example, the heat pump unit 2 is operated to increase the boiling as the third boiling means. The hot water storage tank 1 is operated to store more than the minimum amount of hot water.

  Next, the flowchart shown in FIG. 4 is a control process of the additional heating operation by the control device 200 for realizing the operation pattern shown in FIGS. 2 and 3, and the procedure will be described. First, as shown in FIG. 4, it is determined in step 201 whether or not the learning control start time has been reached. Here, when 2:00 is reached, the control process for the additional heating operation is started.

  In step 202, learning control is performed from the stored hot water data for a predetermined period in the past (for example, one week), and at least the hot water hot spring time, the amount of hot water or the amount of hot water discharged, and the hot water time are predicted. Here, from the data of the past predetermined period (for example, one week), the large hot water per time is obtained in the order of the amount of the hot water discharged per day or the amount of discharged hot water, and the amount of the hot water discharged or the amount of discharged hot water is determined in the past predetermined period ( For example, learning control may be performed with an average value to a maximum value for one week.

  At that time, the prediction of the hot water time is adopted by learning and controlling the earliest hot water time from the data for the past predetermined period (for example, one week). Moreover, the prediction of the hot water time is good to perform learning control from the average value to the maximum value from the data for the past predetermined period (for example, one week). In addition, the control process of the above step 202 is called the hot water prediction means in a claim.

  In step 203, the predicted target heat amount of the large hot water is calculated. Specifically, the maximum value including the average value or the standard deviation is calculated from the amount of discharged hot water of the stored hot water data for a predetermined period (for example, one week) stored. In step 204, the predicted calorific value of the predicted hot spring water is calculated.

  When the predicted amount of heat is discharged, the heat pump unit 2 is operated to perform a boiling increase operation as the second boiling means, and the hot water heated by the heat pump unit 2 is the hot water supply pipe on the outlet side. 17 is the amount of calorie fed into the hot water. In addition, the control process of the above step 203 is called a boiling heat quantity calculation means in the claims, and the control process of step 204 is called a predicted heat quantity calculation means in the claims.

  Next, in step 205, the necessary hot water storage amount to be stored before the predicted hot water discharge time is calculated. The required hot water storage amount is calculated by subtracting the predicted heat amount calculated in step 204 from the sum of the target heat amount calculated in step 203 and the preset minimum hot water storage amount. According to this, the required hot water storage amount can be reduced as much as possible. In addition, the control processing of the above step 205 is called the required hot water storage amount calculation means in the claims.

  In step 206, a start time for storing the required hot water storage amount calculated in step 204 is calculated. This start time is obtained by subtracting the hot water storage time in which the necessary hot water storage amount is stored in the hot water storage tank 1 from the predicted hot water discharge time. That is, it is obtained from the boiling start time = tapping time-Tw.

  Then, Tw is obtained from Tw = (target heat amount−Qa × 860 × (hot water time−5 minutes)) − current hot water storage amount + minimum hot water storage amount) / Qa. Here, Qa is the operating capacity of the heat pump unit 2, and 12 kW which is the maximum capacity of the heat pump unit 2 is used to cover this large hot water.

  Here, 5 minutes is a delay at the time of start-up of the heat pump unit 2, and when hot water boiled by this type of heat pump unit 2 is sent to the tapping side, the operation of the heat pump unit 2 is continued until the boiling temperature becomes stable. Since there is a delay of about 5 minutes after the start, Tw is calculated including this. In this embodiment, (target heat amount−Qa × 860 × (hot water time−5 minutes)) is used, but not limited to this, the predicted heat amount of Qa × 860 × (hot water time−5 minutes) is omitted, and Tw You may ask for.

  In step 210, the time zone is determined. If the current time is 2:00 to 14:00 in the first half of the day, the process proceeds to step 211. If the current time is 14:00 to 2:00 in the second half of the day, the process proceeds to step 230. That is, the operation pattern shown in FIG. 2 or FIG. 3 is determined in this step.

  In step 211, the current hot water storage amount is detected, and the remaining hot water heat amount in the hot water storage amount is calculated. Then, in step 212, it is determined whether or not the detected hot water storage amount is relative to a preset minimum hot water storage amount.

  Here, even if the heat pump unit 2 is operated simultaneously with the hot water discharged from the hot water supply pipe 17, the minimum amount of hot water storage is required for a predetermined time until the temperature boiling in the heat pump unit 2 reaches a predetermined temperature. It is the amount of hot water to be covered with hot water stored in 1, and the amount of collateral to prevent hot water from running out. In the present embodiment, for example, 50 L is the minimum hot water storage amount.

  Accordingly, if the current hot water storage amount is below the minimum hot water storage amount at step 212, the boiling operation is started at step 213. Specifically, the heat pump unit 2 is operated by switching the three-way valve 25 serving as a distributor to a direction in which the hot water is stored in the hot water storage tank 1 to perform a boiling operation.

  Thereby, the hot water boiled by the heat pump unit 2 is sent into the hot water storage tank 1. In step 214, the heat pump unit 2 is continuously heated until the boiling stop condition is satisfied, and the amount of stored hot water is increased.

  Here, as an additional stop condition, for example, if the hot water storage amount increases by 30L to the current hot water storage amount, the boiling operation is stopped in step 215. In other words, in cases other than the predicted large hot water, when the current hot water storage amount is monitored and falls below the preset hot water storage amount, the boiling operation is started in step 213. The control process of step 213 is referred to as third boiling means in the claims.

  If it is determined in step 212 that the amount is not less than the minimum hot water storage amount, it is determined in step 220 whether or not the current time is AM2: 0 to AM7: 00. If it is within this time, the target heat quantity is calculated in step 221. Here, as described above, it is a calculating means for obtaining the amount of calorie (7500 Kcal or more) for half a day of the day.

  Here, the operating capacity of the heat pump unit 2 is 6 kW, which is half of the maximum capacity, and the amount of discharged hot water heated to a boiling temperature of 65 ° C. (for example, (65 ° C.-12 ° C.) × 150 L = 7950 Kcal). Then, in step 222, a start time for starting the heating operation is calculated. Here, since the time zone where the charge setting is low ends at AM 7:00, for example, the target heat amount is heated up before reaching AM 7:00.

  In step 223, it is determined whether the start time has been reached. When the start time is reached, the boiling operation is started in step 224. Specifically, the three-way valve 25 is switched to the direction to send out to the hot water storage side of the hot water storage tank 1, and the heat pump unit 2 is operated to perform a boiling operation.

  In step 225, the boiling operation of the heat pump unit 2 is continued until the boiling stop condition is satisfied, and the target hot water storage amount is increased. Here, if the amount of hot water stored for the target amount of heat increases as the boiling increase stop condition, in step 226, the boiling increase operation is stopped. Thereby, the hot water storage amount (refer FIG. 2) equivalent to the target calorie | heat amount for half a day used by 14:00 can be stored in a hot water storage tank before AM 7:00.

  Next, in step 210, if the current time is 14:00 to 2:00 in the second half of the day, the process proceeds to step 230. Here, it is a determination means for determining the start time calculated in step 206, and when the start time is reached, in step 231, the current hot water storage amount is detected and the remaining hot water heat amount in the hot water storage amount is calculated. .

  Then, in step 232, the current hot water storage amount is compared with the required hot water storage amount calculated in step 205. If the current hot water storage amount is smaller than the necessary hot water storage amount, the boiling operation is started in step 233.

  Specifically, the three-way valve 25 is switched to the direction to send out to the hot water storage side of the hot water storage tank 1, and the heat pump unit 2 is operated to perform a boiling operation. Here, the operation capacity of the heat pump unit 2 is preferably 12 kW, which is the maximum capacity, and the boiling temperature is 50 ° C. Thereby, the hot water boiled by the heat pump unit 2 is sent into the hot water storage tank 1.

  In step 234, the heat pump unit 2 continues to be heated until the boiling stop condition is satisfied. Here, as the boiling stop condition, for example, if the hot water storage amount increases to the required hot water storage amount, the boiling increase operation is stopped in step 235. Thereby, before the predicted large hot water, the required hot water storage amount at the time of the large hot water predicted thereafter can be stored. In addition, the control process of step 233 is called the 1st boiling means in a claim.

  On the other hand, if it is determined in step 230 that the current time has not reached the predicted start time, it is determined in step 241 whether or not it is the predicted hot spring time zone. Here, if it is the predicted time zone of the large hot water, it is determined in step 242 whether or not the hot water is being discharged.

  This control process is a determination means for determining flow rate information from the flow rate counter 72, and determines whether it is a large tapping hot water that discharges a hot water amount equal to or greater than a predetermined value or a tapping water other than the large tapping water. . In other words, if the flow rate information from the flow rate counter 72 is equal to or greater than the predicted amount of tapping water or the amount of tapping heat (for example, 80%), it is determined that the tapping water is being tapped.

  Here, if it is during the predicted hot spring of the large hot water, the boiling operation is started in step 243. Here, the operation capacity of the heat pump unit 2 is preferably 12 kW, which is the maximum capacity, and the boiling temperature is 50 ° C.

  Specifically, the flow direction is switched to the direction in which the three-way valve 25 is sent out to the hot water outlet side, and the heat pump unit 2 is operated to send out hot water that has been boiled out to the outlet pipe 19 so that the hot water is discharged from the hot water supply pipe 17. . That is, the hot water heated by the heat pump unit 2 can be supplemented with the hot water from the large hot spring.

  Then, in step 244, for example, the boiling operation of the heat pump unit 2 is continued until the predicted hot water discharge time elapses as a boiling stop condition. Here, if the boiling increase stop condition is satisfied, the boiling increase operation is stopped in step 245.

  As a result, hot water heated up in the heat pump unit 2 is supplemented with the required amount of hot water stored in the hot water storage tank 1 and the predicted amount of hot water to be discharged without hot water. Note that the control processing in step 243 is referred to as second boiling means in the claims.

  In step 246, the amount of hot water or amount of heat discharged, the time of hot water, and the time of hot water are stored. That is, if the flow rate information from the flow rate counter 72 is a large tapping water that is tapped at a tapping amount equal to or greater than a predetermined value, at least the tapping amount or tapping heat amount, tapping time, tapping time at this time is stored.

  Specifically, since it is set according to the setting standard of the large hot water shown in FIG. 5 (a) and FIG. 5 (b), will be described below. As shown in FIG. 5 (a), only the amount of hot water supplied per unit time shown in 2 (heated heat amount) equal to or greater than a predetermined value indicated by 1 is stored only for a predetermined value or greater.

  More specifically, as shown in FIG. 5 (b), the predetermined value of the hot water supply amount (heat output heat amount) equal to or greater than the predetermined value shown in 1 is about 40L less than the minimum hot water storage amount, and the amount of hot water discharged per unit time shown in 2 The predetermined value is set to about 4 L / min which is equal to or less than the maximum operating capacity of the heat pump unit 2.

  And as shown in 3, it memorize | stores with the hot water per time, but memorize | stores as the hot water per time in the case of the intermittent hot water within a predetermined time (for example, about 5 minutes). The reason for this is to catch these hot springs as a group. More specifically, it takes about 5 minutes for the heat pump unit 2 to stop and restart and reach the boiling temperature.

  And the amount of hot water is memorize | stored in order with the large amount of hot water in the unit period (for example, 1 day) shown in 4, and the average value of the amount of hot water or the amount of hot water discharged from the data for the past predetermined period (for example, one week). The maximum value obtained from the standard deviation is calculated and stored. As a reason for this, it is preferable to store in the order of the amount of hot water, assuming the case of a user who has several occasions of large hot springs such as hot water filling and use of a large amount of showers within a unit period (for example, one day).

  And as shown in 5, it also memorize | stores the tapping time at this time together, and calculates and memorize | stores the maximum value calculated | required from the average value and standard deviation of tapping time from the data for the past predetermined period (for example, one week). To do. This hot water time is a time when the hot water heated by the heat pump unit 2 is supplemented with the hot water of the large hot water, and as shown in FIG. 5B, the time of a + b while the heat pump unit 2 is ON. Remember.

  And as shown in 6, it also memorize | stores together the hot water time to pour out hot water, and uses the earliest time for prediction from the data for the past predetermined period (for example, one week). Note that the shortest time expected from the variation for a predetermined period in the past (for example, one week) may be predicted. In addition, the control process of this step 246 is called the amount of hot water storage means in a claim.

  Then, after storing the data of the large hot water at step 246, the process returns to step 210, and at step 230, the start time of the next large hot water is monitored, and when there is no predicted large hot water, the process goes to step 212. The minimum amount of stored hot water is monitored, and the minimum amount of stored hot water is maintained by the third boiling means in step 213.

  By the way, when it is not executed even if the predicted large hot water reaches the predicted hot water time, it proceeds to the next predicted large hot water start time. Then, at the next start time, in step 232, the current hot water storage amount is compared with the necessary hot water storage amount at the time of the next predicted large hot water, and then the heat pump unit 2 is operated. When the hot water storage amount is larger than the necessary hot water storage amount, the process does not proceed to step 233.

  In step 233 and step 243, the boiling temperature in the additional heating operation is set to 50 ° C. However, the temperature is not limited to this and may be about 45 ° C. For example, if the boiling temperature is about 50 ° C., it is an appropriate temperature for hot water filling, and if it is about 45 ° C., it is the optimum temperature for general hot water supply.

  In step 230, the time zone of the day is divided into two parts of 2:00 to 14:00 and 14: 0 to 2:00. However, the present invention is not limited to this, and 2 according to the usage pattern of the user. It may be divided into more than division. Furthermore, in the above embodiment, the average value to the maximum value are predicted from the data for the past predetermined period (one week). However, the present invention is not limited to this. It may be predicted from data from weekdays.

  With the above control process, the hot water storage tank 1 can store the necessary amount of hot water as much as possible, and the heat pump unit 2 can reduce the capacity of the stored hot water as much as possible. Boiled hot water can be discharged. And when it is other than large hot water, the minimum hot water storage amount in the hot water storage tank 1 is monitored, and when the minimum hot water storage amount becomes less than a predetermined amount, the hot water heated by the heat pump unit 2 is transferred to the hot water storage side of the hot water storage tank 1. You can store hot water.

  According to the hot water storage type hot water supply apparatus according to the first embodiment described above, the control device 200 has an amount of discharged hot water or an amount of discharged hot water equal to or greater than a predetermined value used for hot water supply from the hot water side within at least a unit period (for example, one day). A hot water storage unit 246 that calculates and stores the amount of discharged hot water or the amount of heat of hot water as data, a boiling target heat amount calculation unit 203 that calculates a boiling target heat amount from the data stored in the hot water storage unit 246, and Based on the boiling target heat quantity obtained by the boiling target heat quantity calculating means 203, the required hot water storage quantity calculating means 205 for calculating the required hot water storage amount stored on the hot water storage side of the hot water storage tank 1 and the hot water storage quantity storage means 246 are stored. Hot water prediction means 202 that predicts large hot water by performing learning control from data, and hot water predicted by the hot water prediction means 202 Before the heat pump unit 2 is operated, first heating means 233 for performing a heating operation for storing hot water for hot water supply in the required hot water storage amount calculated by the required hot water storage amount calculation means 205 on the hot water storage side of the hot water storage tank 1 is provided. Have.

  According to this, it is possible to predict the large hot water by the hot water prediction means 202, and to store the shortage of the amount of heat generated by the large hot water in the hot water storage side of the hot water storage tank 1 before the hot water is discharged. That is, it is possible to secure in the hot water storage tank 1 the required amount of hot water according to the actual use as the required hot water storage amount in advance.

  Therefore, the storage time for storing hot water in the hot water storage tank 1 can be shortened, so that heat loss can be reduced and energy saving can be improved. In addition, since only the shortage of the amount of heat discharged when the large hot water is discharged is stored in the hot water storage tank 1 before the large hot water is discharged, the required hot water storage amount can be greatly reduced. Thereby, it can be set as the hot water storage tank 1 with a small volume.

  The control device 200 also includes a second boiling means for performing a reheating operation in which when the large hot water predicted by the hot water prediction means 202 is discharged, the heat pump unit 2 is operated to send the hot water heated to the outlet side. 243 and predicted heat amount calculating means 204 for calculating the amount of hot water discharged by the second boiling means 243 or the predicted heat amount of the discharged heat, and the necessary hot water storage amount calculating means 205 is the boiling target heat amount calculating means 203. The required hot water storage amount is obtained by subtracting the predicted heat amount obtained by the predicted heat amount calculation means 204 from the sum of the obtained hot water amount or the amount of hot water discharged and the preset minimum hot water storage amount.

  According to this, when the large hot water is necessary, the second boiling means 243 performs the boiling operation, so that the necessary hot water storage amount stored before the large hot water is discharged can be reduced. As a result, heat loss can be further reduced and energy savings can be further improved.

  Further, the control device 200 has a hot water boiled by operating the heat pump unit 2 so as to maintain the preset minimum hot water storage amount, except before the hot water predicted by the hot water prediction means 202 is discharged. By having the third reheating means 213 that performs the reheating operation for feeding the hot water to the hot water storage side, even if hot water other than the large hot water is frequently used, the minimum hot water storage amount can be provided.

  Further, the first, second, and third heating means 233, 243, and 213 are largely operated by operating the heat pump unit 2 at least during a time period when the charge setting is high when there are time periods when the charge setting is different. When the hot water is poured out, it is generally a time zone in which the fee setting is high, so that energy saving can be improved compared to operating and storing in a time zone in which the fee setting is low.

  Further, the first boiling means 233 obtains a deficient amount or a deficient heat amount by subtracting a tapping amount or a tapping heat amount obtained by the boiling target heat amount calculating means 203 from the current hot water storage amount or the remaining hot water heat amount, and increases the boiling amount. By subtracting the required time from the hot water time at which the hot water predicted by the hot water prediction means 202 is discharged, and starting the heating operation before that time, it is ensured that the necessary amount of hot water is stored before the hot water is discharged. It can be secured in the hot water storage tank 1. This prevents hot water from running out.

  Further, the first boiling increase means 233 subtracts the amount of hot water or the amount of discharged hot water determined by the boiling target heat amount calculation means 203 from the current amount of stored hot water or the amount of remaining hot water, and adds the predicted heat amount calculated by the predicted heat amount calculation means 204 to it. Then, the amount of deficiency or the amount of heat is obtained, and the time required to increase the boiling amount is subtracted from the hot water time when the large hot water predicted by the hot water prediction means 202 is discharged, and the additional heating operation is started before that time. Thus, it is possible to ensure the required amount of hot water in the hot water storage tank (1) before pouring out the large hot water. This prevents hot water from running out.

  Further, the hot water storage means 246 stores the hot water used for hot water supply from the hot water side as a hot water amount of a predetermined value or more per time, or a hot water amount of hot water, and once from the start of the hot water to the end of the hot water, In the case of intermittent hot water, if it is within a predetermined time, it is stored as hot water per time.

  According to this, large hot springs can be regarded as a group of a certain range. For example, it is possible to detect hot water that cannot be boiled by the heat pump unit 2 such as filling hot water in a bathtub or using a shower that consumes a large amount of hot water.

  Further, the hot water storage means 246 stores the hot water used for hot water supply from the hot water side as a hot water amount exceeding a predetermined value per unit time or as a hot water of the hot water amount. It is possible to detect hot water that cannot be heated by the heat pump unit 2 such as hot water filling and shower use that consumes a large amount of water.

  Further, the hot water prediction means 202 obtains the large hot water per time from the data for the past predetermined period in the order of the amount of the hot water discharged per day or the amount of the hot water discharged, and calculates the amount of hot water discharged or the amount of hot water discharged for the past predetermined period. By predicting large hot springs by performing learning control as an average value to a maximum value, assuming that the past predetermined period is one week, based on the data of the large hot springs in that week, It can be predicted accurately. In addition, by taking the maximum value including the standard deviation in addition to the average value, it is possible to pour out hot water without running out of hot water.

  Further, the hot water prediction means 202 predicts the hot water discharge time of the large hot water per time from the data for the past predetermined period by performing learning control from the average value to the maximum value, thereby increasing the second boiling means by the hot water time. 243 can predict the amount of discharged hot water that performs boiling operation. For example, if the hot water discharge time is relatively long, the amount of hot water discharged can be compensated by the boiling increase operation by the heat pump unit 2 during that time.

  Further, the hot water predicting means 202 predicts by making the learning control as the earliest hot water time from the data for a predetermined period in the past, so that the probability of exceeding the earliest hot water time is small. There is no hesitation in the occurrence of large hot springs that run out of water.

  Moreover, the hot water prediction means 202 can accurately predict large hot water by predicting large hot water by performing learning control by classifying the data for a predetermined period of time according to time periods. Moreover, it can be set as the hot water storage tank 1 with a small volume.

  Further, the control device 200 is predicted by being able to vary the boiling temperature of the heat pump unit 2 as necessary during the heating operation by the first, second, and third boiling means 233, 243, and 213. The heating operation of the heat pump unit 2 can be performed at the boiling temperature corresponding to the large hot water. Further, the COP can be improved.

  Further, the control device 200 is predicted by being able to vary the heating capacity of the heat pump unit 2 as necessary during the heating operation by the first, second, and third boiling means 233, 243, and 213. The heating operation of the heat pump unit 2 can be performed with the boiling capacity corresponding to the large hot water. Further, the COP can be improved.

  In addition, the second boiling means 243 operates the heat pump unit 2 when the amount of discharged hot water exceeds a predetermined value per unit time or when the amount of discharged hot water is large, and when the amount is less than a preset minimum hot water storage amount. By starting the reheating operation in which the hot water that has been boiled up is sent to the outgoing hot water side, when there is an unexpected large hot water, it is possible to cope with the current hot water storage without causing hot water shortage.

  Further, the control device 200 displays the current time when the predicted hot spring time of the large hot water has passed, or when the hot water having a predetermined ratio or more is discharged at the predicted hot water time or when the large hot water having the amount of discharged hot water is discharged. By executing the prediction of the subsequent large hot water, switching for the next predicted large hot water can be smoothly performed.

(Second Embodiment)
In the above first embodiment, as shown in FIG. 4, the time zone is determined in step 230, and the heat pump unit 2 is heated up according to the predicted hot water in that time zone. Not limited to this, specifically, as shown in FIG. 6, the heat pump unit 2 may be heated up according to the predicted hot water without providing step 230.

(Other embodiments)
In the above-described embodiment, the order of the amount of tapping of the predicted hot spring is described in order, but since the order of the size of the large hot water differs in the actual prediction pattern, the start time in each predicted hot water is monitored. The required hot water storage amount may be stored in the order of the large hot springs with the largest amount of hot water.

  Further, in the above embodiment, the heat pump unit 2 is configured from a supercritical heat pump cycle in which the refrigerant pressure on the high temperature side is equal to or higher than the critical pressure of the refrigerant. You may comprise with a heat pump cycle.

It is a schematic diagram which shows the whole structure of the hot water storage type hot water supply apparatus in 1st Embodiment of this invention. It is a time chart which shows the action | operation of the hot water storage type hot-water supply apparatus in the first half of the day (2: 0 to 14:00). It is a time chart which shows the action | operation of the hot water storage type hot-water supply apparatus in the second half of the day (14: 00-2: 00). It is a flowchart which shows the control processing in the heating increase operation of the control apparatus 200 in 1st Embodiment of this invention. (A) is explanatory drawing which shows the setting reference | standard of the hot water storage means 246 in the learning control of large hot water, (b) is a time chart which shows the operation | movement form. It is a flowchart which shows the control processing in the heating increase operation of the control apparatus 200 in 2nd Embodiment of this invention.

Explanation of symbols

1 ... Hot water storage tank 2 ... Heat pump unit (heating means)
200: Control device (control means)
202 ... Hot water prediction means 203 ... Boiling target calculation means 204 ... Predicted heat amount calculation means 205 ... Necessary hot water storage amount calculation means 213 ... Third boiling increase means 233 ... First boiling increase means 243 ... Second boiling increase means 246 ... Outflow hot water amount Storage means

Claims (16)

A hot water storage tank (1) in which water is supplied from the water supply source to the water supply side, and hot water for hot water supply is stored on the hot water storage side;
A heating means (2) for taking water from the water supply side and sending boiled hot water to the hot water storage side or the hot water side;
Control means (200) for controlling the heating means (2),
The control means (200) calculates the amount of tapping water or tapping heat amount greater than or equal to a predetermined value used for hot water supply from the tapping side in at least a unit period, and stores the tapping amount or tapping heat amount as data. (246),
A boiling target heat quantity calculating means (203) for calculating a boiling target heat quantity from the data stored in the hot water storage means (246);
A required hot water storage amount calculating means (205) for calculating a required hot water storage amount stored in the hot water storage side of the hot water storage tank (1) based on the boiling target heat amount obtained by the boiling target heat amount calculation means (203);
Hot water prediction means (202) for predicting large hot water by performing learning control from the data stored in the hot water storage means (246),
Before the large hot water predicted by the hot water prediction means (202) is discharged, the heating means (2) is operated to supply hot water for hot water supply of the required hot water storage amount calculated by the required hot water storage amount calculation means (205). A hot water storage type hot water supply apparatus comprising first boiling means (233) for performing a reheating operation for storing in the hot water storage side of the hot water storage tank (1). In the control means (200), when the large hot water predicted by the hot water prediction means (202) is discharged, the heating means (2) is operated to feed the hot water heated up to the hot water side. Second boiling means (243) for performing
A predicted calorific value calculating means (204) for calculating the amount of hot water discharged by the second boiling means (243) or the predicted calorific value of the discharged hot water;
The required hot water storage amount calculation means (205) is configured to calculate the predicted heat amount calculation means (204) based on the amount of hot water obtained by the boiling target heat amount calculation means (203) or the sum of the amount of hot water discharged and the preset minimum hot water storage amount. The hot water storage type hot water supply apparatus according to claim 1, wherein the required hot water storage amount is obtained by subtracting the predicted heat amount obtained in step 1.   The control means (200) is provided with the heating means (2) so as to maintain a preset minimum hot water storage amount other than before pouring the large hot water predicted by the hot water prediction means (202). The hot water storage hot water supply apparatus according to claim 1 or 2, further comprising a third reheating means (213) for performing a reheating operation in which hot water that has been operated and heated is sent to the hot water storage side.   The first, second, and third heating means (233, 243, 213) operate the heating means (2) at least during a time period when the charge setting is high when there are time periods when the charge setting is different. The hot water storage type hot water supply apparatus according to any one of claims 1 to 3, wherein   The first boiling increase means (233) obtains a deficiency or deficient heat by subtracting the amount of hot water or the amount of discharged hot water determined by the boiling target heat quantity calculation means (203) from the current amount of stored hot water or the amount of remaining hot water The time required for the reheating is subtracted from the time of pouring the large hot water predicted by the hot water prediction means (202), and the reheating operation is started before that time. The hot water storage type hot water supply apparatus according to claim 4.   The first boiling increase means (233) subtracts the amount of hot water or the amount of discharged hot water determined by the boiling target heat amount calculation means (203) from the current hot water storage amount or the amount of remaining hot water, and the predicted heat amount calculation means (204). Subtracting the amount of deficiency or heat deficiency by adding the predicted calorific value obtained in step 1, subtracting the time required for increasing the boiling from the tapping time for pouring the large tapping water predicted by the tapping prediction means (202), The hot water storage type hot water supply apparatus according to claim 1 or 4, wherein the heating operation is started from before the time.   The hot water storage means (246) stores the hot water used for hot water supply from the hot water side as a hot water of a predetermined amount or more per time, or a hot water of the amount of hot water, and once from the start of the hot water to the end of the hot water. The hot water storage type hot-water supply device according to claim 1, wherein the hot water storage is stored as hot water per one time within a predetermined time during intermittent hot water.   The hot-water storage means (246) stores hot-water used for hot-water supply from the hot-water side as hot-water with a predetermined value or more per unit time or with hot-water heat. The hot water storage type hot water supply apparatus described. In the hot water storage means (246), the unit period is data of the amount of hot water or the amount of heat of hot water having a predetermined value or more in a day, and data for a predetermined period in the past is stored.
The hot water prediction means (202) obtains large hot water per time from the data for the past predetermined period in the order of the amount of hot water discharged per day or the amount of hot water discharged, and determines the amount of hot water discharged or the amount of hot water discharged from the past predetermined amount The hot water storage type hot water supply apparatus according to claim 1, wherein large hot water is predicted by performing learning control as an average value to a maximum value for a period.   The said hot-water prediction means (202) predicts by performing learning control from the data for the past predetermined period as the average value to the maximum value of the hot water discharge time of the large hot water per time. The hot water storage type hot water supply apparatus described.   The said hot water prediction means (202) predicts by performing learning control from the data for the said predetermined period as the earliest hot water time from the hot water hot water hot water prediction means (202). Hot water storage system.   The hot water storage according to claim 1 or 9, wherein the hot water prediction means (202) predicts large hot water by performing learning control by dividing the data for the past predetermined period according to time periods. Water heater.   The control means (200) sets the boiling temperature of the heating means (2) as needed during the heating operation by the first, second, and third heating means (233, 243, 213). The hot water storage type hot water supply apparatus according to any one of claims 1 to 12, wherein the hot water storage type hot water supply apparatus is variable.   The control means (200) can increase the boiling capacity of the heating means (2) as needed during the heating operation by the first, second, and third boiling increase means (233, 243, 213). The hot water storage type hot water supply apparatus according to any one of claims 1 to 13, wherein the hot water storage type hot water supply apparatus is variable.   The second boiling means (243) is a heating means (24) that is used when the amount of tapping water or the amount of tapping heat is greater than a predetermined value per unit time, and when the amount is less than a preset minimum amount of hot water. The hot water storage type hot water supply apparatus according to any one of claims 1 to 14, wherein a boiling increase operation is started in which the hot water boiled by operating 2) is sent to a tapping side.   The control means (200) presents when the predicted hot spring time of the large hot water has passed or when the hot water of a predetermined ratio or more is discharged at the predicted hot water time or when the large hot water of the hot water is discharged. The hot water storage type hot water supply apparatus according to any one of claims 1 to 15, wherein the prediction of the next large hot water after the time is executed.

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