JP2009281674A - Storage water heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a storage water heater easily preventing a malfunction caused by aged deterioration. <P>SOLUTION: In configuring the storage water heater 120A carrying out water from to a hot water storage tank 20 from a water supply passage 30, boiling water taken in from the hot water storage tank 20 into hot water by a heat source machine 10 and storing it in the hot water storage tank, and supplying the hot water stored in the hot water storage tank to a predetermined supply destination by a hot water supply passage 70, hot water supply detection parts 71, 75 are provided for detecting the presence or absence of consumption at the hot water supply destination, a cumulative number of times of the consumption of hot water at the hot water supply destination is determined on the basis of a detection result of the hot water supply detection parts, a notifying signal generating part is provided for generating a notifying signal when the cumulative number of times of consumption exceeds a first condition value, and a display part 105 is provided for displaying information evoking maintenance on reception of the notifying signal. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a hot water storage type hot water supply device that stores hot water boiled by a heat source device in a hot water storage tank and supplies the hot water to a desired hot water supply destination.

  A hot water storage type hot water heater inevitably deteriorates like other devices, and if the hot water storage type hot water heater is used without being noticed, the hot water storage type water heater suddenly fails. In order to prevent the occurrence of defects due to aging, it is desired to perform maintenance by detecting or predicting aging.

  Although it is not a hot water storage type water heater, Patent Document 1 discloses a washing machine in which all processes of washing, rinsing, and dehydration automatically proceed according to the course set in the control device. There is described a washing machine provided with storage means for storing the integrated value and displaying a prompt for periodic inspection when the number of course operations reaches a predetermined value. Specifically, in this washing machine, the number of course operations is integrated when a course switch for selecting course operation is pressed.

JP 2000-271390 A

  The above-described function in the washing machine described in Patent Document 1 is effective for a product that requires a switch operation when it is used, but also operates by opening and closing a faucet that is not directly connected to the product. It cannot be applied to a hot water storage type water heater.

  This invention is made | formed in view of said situation, and it aims at obtaining the hot water storage type hot water supply machine which is easy to prevent generation | occurrence | production of the malfunction resulting from aged deterioration.

  The hot water storage type water heater of the present invention supplies water from a water supply line to a hot water storage tank, boiles water taken from the hot water storage tank into hot water by a heat source machine, stores the hot water in the hot water storage tank, and stores the hot water stored in the hot water storage tank. Is a hot water storage hot water supply system that supplies hot water at a hot water supply destination, and a hot water supply detection unit that detects whether or not hot water is consumed at the hot water supply destination, and the cumulative consumption of hot water at the hot water supply destination based on the detection results of the hot water supply detection unit It has a notification signal creation unit that obtains the number of times and creates a notification signal when the cumulative number of times of consumption exceeds the first condition value, and a display unit that displays information for invoking maintenance upon receiving the notification signal It is what.

  Since the hot water storage type water heater of the present invention has a function of displaying information for invoking maintenance on the display unit when the cumulative consumption number of hot water at the hot water destination exceeds the first condition value, When the deterioration over time has progressed to some extent due to the pressure change in the hot water tank accompanying the consumption of hot water or the pressure change in the pipe connected to the hot water tank, the above information can prompt the user to take appropriate measures. it can. Therefore, in the hot water storage type hot water heater of the present invention, it is easy to prevent the occurrence of problems due to deterioration over time.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a hot water storage type water heater of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiments described below.

Embodiment 1 FIG.
FIG. 1 is a schematic view showing an example of a hot water storage type hot water supply apparatus of the present invention. The hot water storage type water heater 120A shown in the figure has a function of boiling low-temperature water such as city water into hot water with a heat source machine and supplying hot water to a desired location, and a function of chasing the bath water 150a used in the bathtub 150. The hot water storage type water heater 120A includes a heat pump unit 10 and a hot water supply unit 110A. Hereinafter, each component of the hot water storage type water heater 120A will be described.

The heat pump unit 10 includes a compressor 1 that compresses refrigerant, a heat exchanger 3 for boiling, an expansion valve 5, an evaporator 7, and a refrigeration pipe 9 that connects these in an annular shape. It has a cycle system and functions as a heat source machine. In the refrigeration cycle system, for example, supercritical carbon dioxide is used as a refrigerant, and after the refrigerant is compressed by the compressor 1 to become a high temperature and a high pressure, the heat is dissipated by the boiling heat exchanger 3, and the expansion valve The pressure is reduced at 5, the heat is absorbed by the evaporator 7, becomes a gas state, and is sucked into the compressor 1. The refrigeration cycle system is housed in the unit case UC _1.

On the other hand, the hot water supply unit 110A includes a hot water storage tank 20, a water supply line 30, a boiling circulation line 40, a heat source circulation line 50, a reheating heat exchanger 55, a recirculation circulation line 60, and a hot water supply line. 70, pressure relief valve 85, the control unit 100, and a remote controller 105 and the unit case UC _2,.

  The hot water storage tank 20 stores water supplied from the water supply pipe 30 and stores hot water boiled by the heat pump unit 10, and is always kept in a full water state. When the hot water storage type hot water heater 120 </ b> A is used, temperature stratification is formed in the hot water storage tank 20.

  The water supply pipe 30 is a pipe for supplying low temperature water such as city water to the hot water storage tank 20, the first hot water mixing valve 65 a, the second hot water mixing valve 65 b, the first hot water tap 160, and the second hot water tap 165. The first to fifth water supply pipe sections 30a to 30e and the pressure reducing valve 25 are provided. The first water supply pipe portion 30a connects a water source (not shown) such as a water supply and the pressure reducing valve 25, and the second water supply pipe portion 30b is a pressure reducing valve 25, each of the first hot water mixing valve 65a and the second hot water mixing valve 65b. The third water supply pipe portion 30 c connects the pressure reducing valve 25 and the lower part of the hot water storage tank 20. Further, the fourth water supply pipe section 30d branches from the first water supply pipe section 30a and connects the first water supply pipe section 30a and the first hot water tap 160, and the fifth water supply pipe section 30e extends from the first water supply pipe section 30a. It branches and connects the 1st water supply pipe part 30a and the 2nd hot-water tap 165. The pressure reducing valve 25 reduces the pressure of water flowing from the first water supply pipe part 30a to the second water supply pipe part 30b and the third water supply pipe part 30c to a predetermined value or less.

  The boiling circulation pipe 40 is a pipe that takes water from the lower part of the hot water storage tank 20 and returns it to the hot water storage tank 20 from the upper part of the hot water storage tank 20, and includes an outgoing pipe 40a, a return pipe 40b, a bypass pipe 40c, The first three-way valve 35a and the second three-way valve 35b are provided. The forward pipe 40a connects the lower part of the hot water storage tank 20 to the boiling heat exchanger 3, and a first three-way valve 35a is provided in the middle of the forward pipe 40a. The return pipe 40b connects the boiling heat exchanger 3 and the upper part of the hot water storage tank 20, and a second three-way valve 35b is provided in the middle of the return pipe 40b. The bypass pipe 40c connects the first three-way valve 35a and the second three-way valve 35b. A boiling water pump 43 is provided on the downstream side of the first three-way valve 35a in the forward pipe 40a.

  The heat source circulation pipe 50 is a pipe that takes hot water from the upper part of the hot water storage tank 20 and returns the hot water to the hot water storage tank 20 from the lower part of the hot water storage tank 20, and has an outward pipe 50a and a return pipe 50b. The forward pipe 50a and the return pipe 50b are connected to a reheating heat exchanger 55, respectively. The forward pipe 50 a connects the upper part of the hot water storage tank 20 and the upper part of the reheating heat exchanger 55, and the return pipe 50 b connects the lower part of the reheating heat exchanger 55 and the lower part of the hot water storage tank 20. A heat source water supply pump 57 is provided in the middle of the return pipe 50b.

  The recirculation circulation pipe 60 is a pipe that takes the bath water 150a from the side of the bathtub 150 and returns the bath water 150a to the bathtub 150 from the side of the bathtub 150, and includes the forward pipe 60a and the return pipe 60b. . The forward pipe 60 a connects the side of the bathtub 150 and a bathtub-side inlet (not shown) at the bottom of the reheating heat exchanger 55, and the return pipe 60 b is at the upper part of the reheating heat exchanger 55. A bathtub-side outlet (not shown) and the side of the bathtub 150 are connected. A tracking water pump 63 is provided in the middle of the forward pipe 60a. As the reheating heat exchanger 55, for example, a plate heat exchanger is used, and the reheating heat exchanger 55 flows through hot water flowing through the heat source circulation line 50 and the recirculation circulation line 60. Heat is exchanged with the bath water 150a to warm the bath water 150a.

  The hot water supply pipe 70 is a pipe that supplies the hot water stored in the hot water storage tank 20 to the bathtub 150, the first hot water tap 160, or the second hot water tap 165. The first to third hot water supply pipe sections 70a to 70c, It has the 1 hot water mixing valve 65a and the 2nd hot water mixing valve 65b.

  The end of the first hot water supply pipe section 70a on the hot water storage tank 20 side is shared with the forward pipe 50a of the heat source circulation pipe 50, and the downstream end of the first hot water supply pipe section 70a is divided into two flow paths. One of the branches is connected to the first hot water mixing valve 65a, and the other is connected to the second hot water mixing valve 65b. Each of the first hot water mixing valve 65a and the second hot water mixing valve 65b is an electric mixing valve. The second hot water supply pipe section 70 b connects the first hot water mixing valve 65 a and the reheating heat exchanger 55, and the recirculation circulation pipe 60 is a part of the hot water supply pipe 70. The upstream end of the third hot water supply pipe 70c is connected to the second hot water mixing valve 65b, and the downstream end of the third hot water supply pipe 70c is branched into two flow paths, one of which is connected to the first hot water tap 160. The other is connected to the second hot water tap 165.

  The second hot water supply pipe section 70b includes a bathtub temperature sensor 71 that detects the temperature of hot water flowing through the second hot water supply pipe section 70b, and a bathtub flow volume that detects the flow of hot water flowing through the second hot water supply pipe section 70b. The sensor 73 is provided in this order from the upstream side. The third hot water supply pipe portion 70c includes a hot water temperature sensor 75 that detects the temperature of hot water flowing through the third hot water supply pipe portion 70c, and a hot water supply flow rate that detects the flow rate of hot water flowing through the third hot water supply pipe portion 70c. The sensor 77 is provided in this order from the upstream side.

  The pressure relief valve 85 is connected to the top of the hot water storage tank 20 via a pipe 80 to prevent the internal pressure of the hot water storage tank 20 from rising excessively. The control device 100 receives information and instructions input by the user from the remote controller 105, and detection results of sensors such as the bath temperature sensor 71, the bath flow sensor 73, the hot water temperature sensor 75, and the hot water flow sensor 77. Based on the heat pump unit 10, the first three-way valve 35a, the second three-way valve 35b, the boiling water pump 43, the heat source water pump 57, the reheating water pump 63, the first hot water mixing valve 65a, and the second hot water. The operation of the mixing valve 65b is controlled.

  The remote controller 105 includes an operation unit 105a used for inputting information and commands, and a display unit 105b for displaying information and commands input from the operation unit 105a or information obtained from the control device 100. The control device 100 is wired or wirelessly connected and functions as an input device and a display device for the control device 100.

The remaining components excluding the above-mentioned water supply line 30, boiling circulation line 40, recirculation circulation line 60, hot water supply line 70, and remote controller 105 constituting the hot water supply unit 110A are unit cases. It is stored in UC ₂ . A part of each of the water supply pipe 30, the boiling circulation pipe 40, the recirculation circulation pipe 60, and the hot water supply pipe 70 extends to the outside of the unit case UC _2. 105 is installed outside of the unit case UC _2.

  In the hot water storage type water heater 120A configured as described above, when the boiling start time set by the user is reached, the heat pump unit 10 and the boiling water pump 43 operate under the control of the control device 100, and the boiling operation is performed. Done. At this time, water taken from the lower part of the hot water storage tank 20 flows through the boiling circulation pipe 40 and is heated to hot water in the process of passing through the heat exchanger 3 for boiling, and from the upper part of the hot water storage tank 20 to the hot water storage tank. Returned to 20.

  However, for a while after the start of operation, that is, until the boiling temperature in the boiling heat exchanger 3 reaches the set temperature, the hot water boiled in the boiling heat exchanger 3 is supplied to the second three-way valve. 35b, the bypass pipe 40c, and the first three-way valve 35a are returned to the forward pipe 40a. A temperature sensor (not shown) is provided in the middle of the return pipe 40b. The control device 100 monitors the temperature detected by the temperature sensor and switches the second three-way valve 35b when the detected temperature reaches a predetermined temperature. The hot water boiled by the boiling heat exchanger 3 is caused to flow not to the bypass pipe 40c but to the hot water storage tank 20. The hot water storage tank 20 is also provided with a temperature sensor (not shown), and the control device 100 monitors the temperature detected by the temperature sensor and ends the boiling operation when the detected temperature reaches a predetermined temperature.

  When the user instructs hot water filling from the remote controller 105, the operation of the first hot water mixing valve 65a is controlled by the control device 100, the hot water in the hot water storage tank 20 is adjusted to a predetermined hot water temperature, and a predetermined amount of hot water is supplied to the bathtub 150. The When the user instructs the remote controller 105 to refill the bath water 150a, the heat source water pump 57 and the reheating water pump 63 operate under the control of the control device 100, and the reheating operation is performed. A temperature sensor (not shown) is provided in the return pipe 60b in the recirculation circulation line 60, and the control device 100 monitors the temperature detected by the temperature sensor and adds the temperature sensor when the temperature reaches a predetermined temperature. End the whisper operation.

  When the user opens the first hot-water tap 160 or the second hot-water tap 165, the control device 100 controls the operation of the second hot-water mixing valve 65b to adjust the hot water in the hot water storage tank 20 to a predetermined hot water temperature. Hot water is discharged from the first hot-water tap 160 or the second hot-water tap 165.

  The control device 100 in the hot water storage type hot water heater 120A operating in this way displays information for invoking maintenance when the cumulative number of hot water consumption at the hot water supply destination exceeds the first condition value. 105b is displayed. Hereinafter, the specific configuration of the control device 100 will be described with reference to FIG. 2 while appropriately quoting the reference numerals used in FIG.

  FIG. 2 is a functional block diagram schematically showing a control device in the hot water storage type water heater shown in FIG. As shown in the figure, the control device 100 includes a control unit 91, a storage unit 93, and a transmission / reception processing unit 95. The control unit 91 includes a main control unit 91a and a notification signal creation unit 91b. .

  The main control unit 91a includes the operation program stored in the storage unit 93, the information input by the user from the remote controller 105, the command input by the user from the remote controller 105, the bathtub temperature sensor 71, and the bathtub Various control signals are created based on the detection results of sensors such as the flow sensor 73, the hot water temperature sensor 75, and the hot water flow sensor 77. Specifically, the heat pump unit 10, the first three-way valve 35a, the second three-way valve 35b, the boiling water pump 43, the heat source water pump 57, the reheating water pump 63, the first hot water mixing valve 65a, and the first A control signal for the two hot water / water mixing valve 65b (see FIG. 1) is created. Specific examples of the above information include boiling start time, boiling temperature, amount of hot water, hot water temperature, etc. Specific examples of the above commands include hot water start command, reheating start command, hot water temperature, etc. Examples include a change command.

  The notification signal creation unit 91b obtains the cumulative consumption number of hot water at the hot water supply destination, and creates the notification signal when the cumulative consumption count exceeds the first condition value. The number of times hot water is consumed at the hot water supply destination is detected by using, for example, a bath temperature sensor 71, a bath flow sensor 73, a hot water temperature sensor 75, or a hot water flow sensor 77 (see FIG. 1) as a hot water detector. It can be obtained based on the presence or absence of consumption of hot water at the hot water supply destination detected from the detection result of the section. The notification signal creation unit 91b determines whether or not hot water is consumed at the hot water supply destination based on the detection result of the hot water detection unit. When it is determined that hot water is consumed, information indicating the consumption of hot water is sequentially stored in the storage unit 93. The accumulated number of hot water consumptions at the hot water supply destination is stored and the cumulative number of hot water consumptions at the hot water supply destination is obtained.

  For example, the notification signal generation unit 91b includes a counter, and when it is determined that hot water has been consumed at the hot water supply destination, the count value of the counter is incremented and stored in the storage unit 93. It is determined whether or not a condition value of 1 has been exceeded. In addition, if the temperature sensor 71 for bathtubs or the flow sensor 73 for bathtubs is used as said hot-water supply detection part, the frequency | count of hot water consumption in the bathtub 150 can be calculated | required, and the hot water temperature sensor 75 or the hot-water flow sensor 77 detects hot water supply. If it uses as a part, the frequency | count of consumption of the hot water in the 1st hot-water tap 160 and the 2nd hot-water tap 165 (refer FIG. 1) can be calculated | required.

  From the viewpoint of accurately obtaining the cumulative number of hot water consumption, it is desirable to prevent consumption of water at the hot water supply destination from being included in the cumulative consumption frequency. It is preferable to configure the hot water supply detection unit using at least two sensors of the temperature sensor 75 for use. In the present embodiment, it is assumed that a hot water supply detection unit is configured by the bathtub temperature sensor 71 and the hot water supply temperature sensor 75.

  In the storage unit 93, the above-described operation program, information, detection result of the hot water detection unit, the cumulative consumption number of hot water at the hot water destination obtained by the notification signal creation unit 91b, and the first condition value regarding the cumulative consumption number Is stored. The first condition value is set by the manufacturer of hot water storage type hot water supply machine 120A (see FIG. 1) and stored in advance in storage unit 93.

  The transmission / reception processing unit 95 receives information and commands input from the remote controller 105 and transmits them to the main control unit 91a. In addition, detection results of sensors such as the bathtub temperature sensor 71, the bathtub flow sensor 73, the hot water temperature sensor 75, and the hot water flow sensor 77 are received and transmitted to the main controller 91a. Further, the control signal generated by the main control unit 91 a is transmitted to the device to be controlled, and the notification signal generated by the notification signal generation unit 91 b is transmitted to the remote controller 105.

  Since the control device 100 configured in this manner has the notification signal creation unit 91b for obtaining the cumulative number of hot water consumption at the hot water supply destination, each pipe line connected to the hot water storage tank 20 and the hot water storage tank 20 is provided. The number of pressure fluctuations occurring within 30, 40, 50, 70 can be indirectly determined. When the cumulative number of consumption times exceeds the first condition value, the notification signal creation unit 91b creates a notification signal, and the transmission / reception processing unit 95 transmits the notification signal to the remote controller 105.

  In general, the pressure in the hot water storage tank 20 and the pressure in each of the pipes 30, 40, 50, 70 connected to the hot water storage tank 20 are the bath 150 which is the hot water supply destination in the hot water storage type hot water heater 120A (see FIG. 1). When the hot water in the hot water storage tank 20 is not consumed in each of the first hot-water tap 160 and the second hot-water tap 165, the pressure is adjusted by the pressure reducing valve 25. On the other hand, when the consumption of hot water is started at the hot water supply destination, the pressure in the hot water storage tank 20 and the pressure in the pipes 30, 40, 50, 70 connected to the hot water storage tank 20 are reduced. When the consumption of hot water is finished at the hot water supply destination, the pressure in the hot water storage tank 20 and the pressure in the pipes 30, 40, 50, 70 connected to the hot water storage tank 20 are restored. Such pressure fluctuations occur not only in the hot water storage type hot water heater 120A but also universally in the hot water storage type hot water heater, and cause deterioration over time.

  Since the hot water storage type water heater 120A shown in FIG. 1 includes the above-described control device 100, the notification signal creation unit 91b appropriately selects the first condition value that triggers the creation of the notification signal. The notification signal generator 91b generates a notification signal when the deterioration has progressed to some extent, and the remote controller 105 that has received the notification signal can display information for invoking maintenance on the display unit 105b. By displaying the information on the display unit 105b, it is possible to prompt the user to take an appropriate measure, for example, a request for inspection, etc. Therefore, in the hot water storage type water heater 120A, it is easy to prevent the occurrence of problems due to deterioration over time. As a result, long-term use of the product is facilitated.

  Various procedures can be selected for the processing by the notification signal generator 91b in the hot water storage hot water heater 120A that exhibits such a technical effect. Hereinafter, the procedure of the processing by the notification signal creation unit 91b will be specifically described with reference to FIG. 3 while appropriately quoting the reference numerals used in FIG.

  FIG. 3 is a flowchart schematically showing an example of a processing procedure by the notification signal creation unit in the control device shown in FIG. In the example shown in the figure, the notification signal generator 91b performs steps S1 to S4 to generate a notification signal.

  In step S1 performed first, the notification signal creation unit 91b detects whether or not hot water is consumed at the hot water supply destination based on the detection result of the hot water supply detection unit. When consumption of hot water is not detected, step S1 is repeated, and when consumption of hot water is detected, the process proceeds to step S2. In step S2, the notification signal creating unit 91b stores information indicating consumption of hot water in the storage unit 93 (see FIG. 2), and calculates the cumulative number of times hot water is consumed at the hot water supply destination.

  Next, in step S3 to be performed, the notification signal creation unit 91b determines whether or not the cumulative number of consumptions exceeds the first condition value. When it is determined that the first condition value is not exceeded, the process returns to step S1 and the steps S1 and after are repeated. When it is determined that the first condition value is exceeded, the process proceeds to step S4. The notification signal creation unit 91b creates a notification signal in step S4, sends the notification signal to the transmission / reception processing unit 95, and ends the process.

  Regardless of the processing procedure performed by the notification signal generator 91b, when the hot water storage water heater 120A is inspected or replaced, the information for invoking maintenance is at an inappropriate time. It is preferable to configure the hot water storage type hot water heater 120A (see FIG. 1) so as not to be displayed on the display unit 105b (see FIG. 1) of the remote controller 105. For example, the hot water storage type can be changed so that the first condition value can be changed to a larger value by an input operation from the remote controller 105, or the cumulative consumption frequency can be reset to 0 (zero) or a predetermined value. It is preferable to configure water heater 120A (see FIG. 1). This also applies to the hot water storage type water heater of Embodiment 2 described later.

Embodiment 2. FIG.
When hot water is consumed at the hot water supply destination, hot water flows from the hot water storage tank to the hot water supply line, while water flows from the hot water supply pipe to the hot water storage tank. Therefore, in the hot water storage type water heater of the present invention, A hot water supply detection part can also be provided in an upstream area (1st hot water supply pipe part) and a downstream area (3rd water supply pipe part) in a water supply pipe line. In addition to the temperature sensor and the flow rate sensor, the hot water supply detection unit can also be configured with a flow switch, a pressure sensor, and the like.

  FIG. 4 is a schematic diagram showing an example of a hot water storage type hot water heater in which a hot water supply detection unit is provided in the first hot water supply pipe part of the hot water supply pipe line, and FIG. 5 is a hot water supply detection in the third water supply pipe part of the water supply pipe line. It is the schematic which shows an example of the hot water storage type water heater provided with the part.

Water storage type water heater 120B shown in FIG. 4, except that hot water supply detection unit SD ₁ is provided with a hot water supply unit 110B provided in the first supply pipe portion 70a of the hot water supply pipe 70, the hot water storage shown in FIG. 1 It has the same configuration as the water heater 120A. Further, hot-water storage type water heater 120C shown in FIG. 5, except that hot water supply detection section SD ₂ to the third water supply pipe portion 30c of the water supply conduit 30 is provided with a hot water supply unit 110C provided, shown in Figure 1 The hot water storage type hot water heater 120A has the same configuration. Among the constituent elements shown in these drawings, those common to the constituent elements shown in FIG. 1 are denoted by the same reference numerals as those used in FIG.

In any hot water storage type water heater 120B, 120C, the control device 100 has a notification signal generation unit similar to the notification signal generation unit 91b shown in FIG. 2, and the notification signal generation unit is a hot water supply detection unit SD. obtains a cumulative consumption count Yu for hot water destination ₁ or the detection results hot water supply detection section SD ₂ based, to create a broadcast signal when the該累product consumption count exceeds a first condition value. The notification signal is sent to the remote controller 105, and the remote controller 105 that has received the notification signal displays information for invoking maintenance on the display unit 105b. Therefore, each hot water storage type hot water heater 120B, 120C has the same technical effect as the hot water storage type hot water heater 120A described in the first embodiment.

Embodiment 3 FIG.
The hot water storage type hot water supply apparatus of the present invention is provided with an operation history management unit that integrates at least one of the number of times of operation of the heat source machine for boiling water into hot water and the energization time of the heat source machine, and cumulative consumption of hot water at the hot water supply destination In addition to the case where the number of times exceeds the first condition value, the notification signal generation unit is configured to generate the notification signal when the integrated value of the operation history management unit exceeds the second condition value. You can also. The configuration of the hot water storage type hot water heater having such a function is, for example, the hot water storage type hot water heaters 120A to 120A described in the first and second embodiments except that the operation history management unit is added to the control device 100 (see FIG. 2). Since the configuration can be the same as that of 120C (see FIG. 1, FIG. 4, or FIG. 5), the illustration is omitted here.

  The above operation history management unit, for example, based on the control signal of the main control unit 91a (see FIG. 2) for the heat pump unit 10 (see FIG. 1) that is a heat source machine, to the heat pump unit 10 and the number of operations. Are sequentially stored in the storage unit 93, and at least one of the number of operations of the heat pump unit 10 and the energization time to the heat pump unit 10 is integrated. The operation history management unit that integrates the number of operations of the heat pump unit 10 is provided with a counter function, and the operation history management unit that integrates the energization time to the heat pump unit 10 is provided with a timekeeping function.

  In addition to when the cumulative number of consumptions exceeds the first condition value, the notification signal creation unit 91b (see FIG. 2) also when the integrated value of the driving history management unit exceeds the second condition value. Create a notification signal. The second condition value is set by, for example, the manufacturer of the hot water storage type hot water heater and stored in advance in the storage unit 93 (see FIG. 2).

  The notification signal generated by the notification signal generation unit 91b is sent to the remote controller 105, and the remote controller 105 that has received the notification signal displays information for invoking maintenance on the display unit 105b (see FIG. 1). Therefore, the hot water storage type water heater has the same technical effect as the hot water storage type water heaters 120A to 120C described in the first and second embodiments. Furthermore, since the heat pump unit 10 can also display information for invoking maintenance, occurrence of problems due to deterioration over time even compared to the hot-water storage water heaters 120A to 120C described in the first and second embodiments. It is easy to prevent.

  As mentioned above, although the hot water storage type hot water heater of the present invention has been described with reference to the embodiment, the present invention is not limited to the above-described form as described above. The hot water storage type hot water heater of the present invention only needs to have the above-described hot water supply detection unit, notification signal generation unit, and display unit, and the configuration of the hot water storage type hot water supply device can be appropriately selected. For example, whether or not to provide a bath water replenishment function to the hot water storage type water heater can be appropriately selected. In addition to the heat pump unit, a heater disposed in a gas combustion device or a hot water storage tank can be used as a heat source device for boiling water into hot water.

  The location of the hot water detector that detects whether or not hot water is consumed at the hot water supply destination, the total number of hot water detectors, and the type (detection principle) of each hot water detector when multiple hot water detectors are installed can be selected as appropriate. It is. The hot water storage type water heater of the present invention can be variously modified, modified, combined, etc. in addition to those described above.

  The present invention can be applied to a hot water storage hot water heater for home use or business use.

It is the schematic which shows an example of the hot water storage type water heater of this invention. It is a functional block diagram which shows roughly the control apparatus in the hot water storage type water heater shown in FIG. It is a flowchart which shows roughly an example of the procedure of the process by the alerting signal preparation part in the control apparatus shown in FIG. It is the schematic which shows an example in which the hot water supply detection part was provided in the 1st hot water supply pipe part of the hot water supply pipe | tube among the hot water storage type water heaters of this invention. It is the schematic which shows an example in which the hot water supply detection part was provided in the 3rd water supply pipe part of the water supply pipe line among the hot water storage type hot water heaters of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Heat pump unit 20 Hot water storage tank 30 Water supply line 40 Boiling circulation line 50 Heat source circulation line 60 Reheating circulation line 70 Hot water supply line 71 Bath temperature sensor (hot water detection part)
73 Flow sensor for bathtub 75 Temperature sensor for hot water supply (hot water detector)
77 Flow rate sensor for hot water supply 91 Control unit 91a Main control unit 91b Notification signal creation unit 93 Storage unit 100 Control device 105 Remote controller 105a Operation unit 105b Display unit 110 Hot water supply unit 120A, 120B, 120C Hot water storage type hot water supply 150 Bathtub 160 First hot water supply Stopper 165 Second hot-water tap SD ₁ , SD ₂ Hot-water detector

Claims (7)

Water is supplied from a water supply pipe to a hot water storage tank, the water taken from the hot water storage tank is boiled into hot water by a heat source device and stored in the hot water storage tank, and the hot water stored in the hot water storage tank is supplied to a predetermined hot water supply destination through the hot water supply pipe. A hot water storage water heater
A hot water supply detector for detecting the presence or absence of hot water consumption at the hot water supply destination;
Based on the detection result of the hot water detection unit, the cumulative consumption frequency of hot water at the hot water supply destination is determined, and a notification signal creation unit that creates a notification signal when the cumulative consumption frequency exceeds a first condition value;
A display unit that displays information for invoking maintenance in response to the notification signal;
A hot water storage type water heater characterized by comprising: A control device for controlling the operation of the heat source unit;
A remote controller that functions as an input device of the control device;
Further comprising
The notification signal creation unit is provided in the control device,
The display unit is provided in the remote controller,
The hot water storage type water heater according to claim 1. An operation history management unit that integrates at least one of the number of operations of the heat source unit and the energization time of the heat source unit;
The notification signal generation unit generates the notification signal not only when the cumulative consumption count exceeds the first condition value but also when the integrated value of the operation history management unit exceeds the second condition value. To
The hot water storage type water heater according to claim 1 or 2.   The hot water storage type hot water supply apparatus according to any one of claims 1 to 3, wherein the hot water supply detection unit is a temperature sensor provided in at least one of the water supply pipe line and the hot water supply pipe line.   The hot water storage type hot water supply apparatus according to any one of claims 1 to 4, wherein the hot water supply detection unit is a flow switch provided in at least one of the water supply pipe line and the hot water supply pipe line.   The hot water storage type hot water supply apparatus according to any one of claims 1 to 5, wherein the hot water supply detection unit is a flow rate sensor provided in at least one of the water supply pipe line and the hot water supply pipe line.   The hot water storage type hot water heater according to any one of claims 1 to 6, wherein the hot water supply detection unit is a pressure sensor provided in at least one of the water supply pipe line and the hot water supply pipe line.

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