JP2014066512A - Bath water filling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bath water filling device capable of improving energy saving by suppressing the operation of water filling heating means as much as possible.SOLUTION: Control means H, upon receiving a water filling instruction, in the case where the temperature of hot water retained in a heat storage tank T is lower than the set target temperature, when it determines that a reheating amount is equal to the set allowable amount or less on the assumption that hot water retained in the heat storage tank T is filled into a bath tub 3 at a set target water filling amount, and then hot water in the bath tub 3 is heated to a set target temperature by reheating means F, fills the hot water retained in heat storage tank T into the bath tub 3 water at the set target water filling amount in a stop state of filling heating means 18, and then executes a heating stop water filling process for heating the hot water in the bath tub 3 to the set target temperature by the reheating means F.

Description

  The present invention is provided with hot water filling means for performing hot water filling of a bathtub using heat stored in a heat storage tank for storing heat generated by the heat source means, and control means for controlling the operation of the hot water filling means. The present invention relates to a bath bathing apparatus.

Such a bath-water filling device is installed and used in a general home, and is capable of filling a bathtub with water using heat stored in a heat storage tank.
Incidentally, as a heat source means for storing heat in the heat storage tank, when using a solar heat collector, when using exhaust heat recovery means for recovering exhaust heat of the engine driving the generator, exhaust heat for recovering exhaust heat of the fuel cell. There are a case where a recovery unit is used and a case where a heater driven by midnight power of a commercial power source is used.

  When the heat storage tank is configured to store a heat medium for heating the hot water to be filled, the hot water filling means heats the hot water from the water supply channel by the heat medium stored in the heat storage tank. A heat exchange unit for heating hot water to be discharged, and hot water from the water supply channel so that the temperature of the hot water heated and discharged by the heat exchange unit is higher than the set target temperature. Hot water mixing means for mixing the hot water and the hot water filling heating which operates to bring the temperature of the hot water to the set target temperature when the temperature of the hot water heated and discharged by the heat exchanger is lower than the set target temperature It will be comprised in the state provided with a means (for example, refer patent document 1).

  Further, when the heat storage tank is configured to store the hot water supplied to the bathtub, the hot water filling means sets the temperature of the hot water when the temperature of the hot water stored in the heat storage tank is higher than the set target temperature. A hot water mixing means for mixing hot water from the water supply channel and a hot water temperature stored in the heat storage tank when the temperature of the hot water is lower than the set target temperature so that the hot water temperature becomes the set target temperature. It is comprised in the state provided with the heating means for hot water filling which heats (for example, refer patent document 2).

JP 2002-333207 A Japanese Patent Laid-Open No. 2004-263941

  In bath hot water filling devices, it is desirable to save energy by performing hot water filling while minimizing the operation of the hot water heating means and using the heat stored in the heat storage tank as much as possible. However, there are cases where sufficient energy saving cannot be achieved, and improvement has been desired.

  That is, the heat storage tank is configured to store a heat medium for heating the hot water to be filled, and the hot water from the water supply path is heated by the heat medium stored in the heat storage tank to the hot water filling means. When the temperature of the hot water to be heated and the temperature of the hot water heated and discharged by the heat exchange unit is higher than the set target temperature, the hot water from the water supply channel is set to the set target temperature. Hot water mixing means for mixing, and heating means for hot water filling that operates to bring the temperature of the hot water to the set target temperature when the temperature of the hot water heated and discharged in the heat exchange section is lower than the set target temperature In the past, when the temperature of the hot water heated and discharged from the heat exchange unit is lower than the set target temperature, the hot water is simply heated by the hot water heating means. Heating means for hot water filling It was those that use frequency is high.

  Further, the heat storage tank is configured to store hot water supplied to the bathtub, and when the temperature of the hot water stored in the heat storage tank is higher than the set target temperature, the hot water filling means sets the temperature of the hot water to the set target temperature. Therefore, when the temperature of the hot water stored in the heat storage tank is lower than the set target temperature, the heating operation is performed to bring the temperature of the hot water to the set target temperature. In the case where the hot water filling heating means is provided, conventionally, when the temperature of the hot water stored in the heat storage tank is lower than the set target temperature, the hot water heating means is simply heated. For this reason, the hot water filling heating means is frequently used.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a bath bathing device that can suppress the operation of the bathing heating means as much as possible and can improve energy saving. It is in.

The bath hot water filling device of the present invention is a hot water filling means for hot water filling a bathtub using heat stored in a heat storage tank for storing heat generated by the heat source means, and a control means for controlling the operation of the hot water filling means. The first characteristic configuration is as follows:
The heat storage tank is configured to store hot water supplied to the bathtub,
When the temperature of the hot water stored in the heat storage tank is higher than the set target temperature, the hot water mixing means for mixing the hot water from the water supply channel with the hot water filling means so that the temperature of the hot water becomes the set target temperature, When the temperature of the hot water stored in the heat storage tank is lower than the set target temperature, the hot water filling heating means that operates to bring the temperature of the hot water to the set target temperature, and the hot water in the bathtub is tracked. And a heating means for reheating,
When the control means is instructed to fill water,
In the case where the temperature of hot water stored in the heat storage tank is lower than the set target temperature,
When it is assumed that hot water stored in the heat storage tank is filled in the bathtub at a set target hot water amount, and then the hot water in the bathtub is heated to the set target temperature by the heating means for reheating. Execute the determination process to determine whether the amount of tracking is within the set allowable amount,
When the replenishment amount is within the set allowable amount, the hot water stored in the heat storage tank is filled in the bathtub with the set target hot water amount when the hot water heating means is stopped. Then, when a heating stop hot water filling process for heating the hot water in the bathtub to the set target temperature is performed by the heating means for reheating, and when the reheating amount is not within the set allowable amount, The present invention is characterized in that a hot water filling process is performed in which hot water filling is performed in an operating state of the hot water filling heating means.

That is, hot water supplied to the bathtub is stored in the hot water storage tank, and the hot water is filled in the bathtub.
Then, when the temperature of the hot water stored in the heat storage tank is higher than the set target temperature, the hot water temperature is set by the hot water mixing means for mixing the hot water from the water supply channel so that the hot water temperature becomes the set target temperature. By adjusting the temperature, the hot water is filled to the set target temperature.

  Incidentally, when the temperature of the hot water stored in the heat storage tank is the set target temperature, the hot water can be filled to the set target temperature by supplying the hot water to the bathtub.

  In addition, when the temperature of the hot water stored in the heat storage tank is lower than the set target temperature, the control means executes a discrimination process, and based on the discrimination result, the heating stop hot water filling process or the hot water hot water process Will be executed.

That is, when the hot water filling command is instructed, the control means executes the determination process when the temperature of the hot water stored in the heat storage tank is lower than the set target temperature.
This determination process assumes that the hot water stored in the heat storage tank is filled in the bathtub at the set target hot water amount, and then the hot water in the bathtub is heated to the set target temperature by the heating means for reheating. It is determined whether or not the amount of tracking is within the set allowable amount.

Incidentally, the amount of reheating described above is obtained by calculation based on the temperature of hot water stored in the heat storage tank, the set target temperature, the set target hot water filling amount, and the heat efficiency of reheating.
In other words, by multiplying the set target temperature and the temperature and difference between the hot water stored in the heat storage tank and the set target hot water filling amount, the required heat amount can be obtained, and the required heat amount can be calculated with additional heat efficiency. By dividing, the amount of heat output by the heating means for tracking can be obtained as the amount of tracking.

The set allowable amount is determined in consideration of the minimum heating amount (minimum input) of the hot water heating means. In other words, the hot water filling heating means is generally provided with a gas burner as a heating source, but the minimum heating amount of such hot water filling heating means is not zero, but a value considerably larger than zero. become.
For this reason, when the temperature of the hot water stored in the heat storage tank is lower than the set target temperature, but the difference from the set target temperature is small, such hot water is heated with the heating means for filling the hot water with the minimum heating amount. Even so, the temperature of the hot water will be higher than the set target temperature, and the hot water that has become hot in this way will be adjusted to the set target temperature by the hot water mixing means and will be filled in the bathtub. It becomes.
The reason why the hot and cold water is adjusted to the set target temperature by the hot and cold mixing means is to avoid the danger that the hot and hot water is supplied to the empty bathtub.

  Therefore, when the temperature of the hot water stored in the heat storage tank is lower than the set target temperature but the difference from the set target temperature is small, the temperature of the hot water heated by the hot water heating means and the heat storage tank By multiplying the difference between the stored hot water temperature and the set target hot water amount, the amount of heat consumed can be obtained, and the amount of consumed heat is divided by the heating efficiency of the heating means for hot water filling. The amount of heat output from the hot water filling heating means can be obtained, and this amount of heat can be determined as a set allowable amount.

  As is apparent from the above description, the set allowable amount is related to the minimum heating amount of the hot water heating means, and the set allowable amount is determined by setting the temperature of the hot water stored in the heat storage tank to the set target temperature. The larger the limit is, the larger the set target hot water amount is. In other words, if the heating efficiency of the hot water filling heating means does not change due to a change in the temperature of hot water stored in the heat storage tank, the set allowable amount varies depending on the temperature of the hot water stored in the heat storage tank and the set target temperature. However, since the set target hot water amount for hot water does not vary greatly, based on the standard set target hot water amount, It is also possible to set a constant value as the set allowable amount.

  Then, based on the result of the discrimination process, the control means fills the hot water stored in the heat storage tank with the set target hot water amount in the bathtub when the reheating amount is within the set allowable amount, and then Then, the heating stop hot water filling process for heating the hot water in the bathtub to the set target temperature is executed by the reheating heating means, and if the reheating amount is not within the set allowable amount, the hot water heating means The hot water filling process for performing the hot water filling in the operating state is executed.

  Thus, when the temperature of the hot water stored in the heat storage tank is lower than the set target temperature, the hot water filling process is performed, so that the hot water filling means is not operated as much as possible. The tensioning process can be performed.

  In short, according to the first characteristic configuration of the present invention, the bath hot water filling device capable of suppressing the operation of the hot water heating means as much as possible and improving energy saving has been provided.

In addition to the first feature configuration, the second feature configuration of the present invention includes:
The hot water heating means is configured to heat a heating medium other than hot water for hot water filling,
The control means is configured to execute the hot water filling process when operating the hot water heating means for heating a heating medium other than the hot water for hot water filling. .

That is, the control means executes the hot water filling process when the hot water filling heating means is operated to heat a heating medium other than the hot water for hot water filling.
By the way, when heating means for hot water filling is operated to heat a heating medium other than hot water for hot water filling, when the hot water filling command is instructed, the heating medium other than hot water for hot water filling is heated. When the hot water filling heating means is already operated, and when the heating stop hot water filling process is executed, the hot water filling heating means is operated to heat a heating medium other than the hot water for hot water filling. Including the case.

  Thus, when the hot water heating means is operated to heat a heating medium other than the hot water for hot water filling, the hot water hot water filling process is performed without executing the heating stop process. While heating the heating medium other than the hot water for hot water filling and the hot water for hot water filling with the heating means, the hot water filling can be performed as appropriate, and the heat medium other than the hot water for hot water filling can be appropriately heated.

  In short, according to the second characteristic configuration of the present invention, in addition to the operational effects of the first characteristic configuration, hot water filling can be performed as appropriate, and a heat medium other than hot water for hot water filling can be appropriately heated. It came to provide the bathing equipment.

In addition to the first or second feature configuration described above, the third feature configuration of the present invention includes:
The heat source means is a solar heat collector.

That is, the heat collected by the solar heat collector is stored in the heat storage tank, and the bathtub is filled with the stored heat.
Thus, since the hot water filling is performed using solar heat, which is natural energy, the hot water filling of the bathtub can be performed in a form that saves energy.

  In short, according to the third characteristic configuration of the present invention, in addition to the operational effects of either the first or the second characteristic configuration, the hot water in the bathtub can be filled in a form that saves energy by effectively using natural energy. It came to provide the bathing equipment.

The figure which shows the heat supply apparatus of 1st Embodiment. The flowchart which shows the control action of 1st Embodiment. The figure which shows the heat supply apparatus of 2nd Embodiment. The flowchart which shows the control action of 2nd Embodiment.

Embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
The first embodiment, which is a reference embodiment of the present invention, will be described. As shown in FIG. 1, a solar heat combined heat and power supply system is generated by a solar heat combined heat and power supply apparatus 1 and the combined heat and power supply apparatus 1. It comprises a hot water storage unit 2 that uses the heated heat, and an operation control unit H as control means for controlling the operation of the combined heat and power supply device 1 and the hot water storage unit 2.

The hot water storage unit 2 is connected to a hot water storage tank T as a heat storage tank (heat storage), hot water supply to a general hot water tap (general hot water supply), hot water filling to the bathtub 3, chasing the bathtub 3, and to a terminal D for heating. The heating medium is supplied (heating).
In addition, as the terminal D for heating, a floor heating panel, a bathroom heating dryer, a fan convector, etc. will be provided.

The cogeneration device 1 includes a cogeneration panel P in which a solar heating unit 4 as a solar heating heater that heats a heat medium with solar heat and a solar power generation unit 5 that generates electric power with sunlight by photoelectric conversion action are incorporated. .
The generated power of the photovoltaic power generation unit 4 in the combined heat and power panel P is input to the grid interconnection inverter 6, and the inverter 6 receives the generated power of the photovoltaic power generation unit 5 from the commercial power supply 7. Is configured to adjust to the same voltage and frequency.
That is, the power of the commercial power supply 7 is supplied to the power load 9 such as a television, a refrigerator, a washing machine, etc. through the received power supply line 8. Then, the power adjusted by the inverter 6 is supplied to the received power supply line 8 through the generated power supply line 10, and as a result, the generated power of the solar power generation unit 5 is supplied to the power load 9. It is configured.

It is installed in the solar heating unit 4 and the hot water storage tank T as a circulation path for circulating the heat medium so that the heat stored in the hot medium heated by the solar heating unit 4 of the cogeneration apparatus 1 is stored in the hot water storage tank T. The heat transfer heat exchanger 11 as a heat radiating part and the heat medium circulation path 13 passing through the tank part 12 for gas-liquid separation are provided, and the heat medium heated by the solar heating part 4 is stored as hot water. A circulation pump 14 is provided as a circulation means for circulating through the heat medium circulation path 13 with respect to the tank T.
Therefore, in this embodiment, the heat generated by the solar heating unit 4 as the heat source means is stored in the hot water storage tank T as the heat storage tank.

  The gas-liquid separation tank unit 12 is connected to a reserve tank 15 that is open to the atmosphere for storing engine coolant for replenishment, and is set on the high pressure side where the pressure of the heat medium circulation path 13 is higher than the atmospheric pressure. When the pressure exceeds the pressure, the tank portion 12 is opened so as to communicate with the reserve tank 15, and when the pressure in the heat medium circulation path 13 becomes lower than the set pressure on the low pressure side lower than the atmospheric pressure, the tank portion 58 is opened. A pressure cap 16 that opens to communicate with the reserve tank 15 is provided in the tank portion 12.

The hot water storage unit 2 is provided with a heating circulation path 17 that circulates the heat medium taken out from the upper part of the hot water storage tank T so as to return to the bottom of the hot water storage tank T. The heating circulation path 17 is provided with a gas burner heating type. Auxiliary heat source unit 18, hot water supply heat exchanger 19 as a heat exchange unit, heating heat exchanger 20 as a heat exchange unit, bath reheating heat exchanger 21 as a heat exchange unit, and heat medium circulation A circulation pump 22 is provided.
As will be described later, the auxiliary heat source unit 18 functions as a hot water heating means when performing a hot water filling operation, and the hot water supply heat exchanger 19 serves as hot water when performing a hot water filling operation as described later. It will function as a heat exchanger for heating.

  A bypass passage 17A for bypassing the hot water storage tank T and flowing the heating medium is connected to the heating circulation passage 17, and a bypass state in which the heating medium flows through the hot water storage tank T and a bypass state in which the heating medium flows through the bypass passage 17 are connected. A three-way valve 23 for switching between the two is provided.

The hot water storage tank T is open to the atmosphere, and an overflow path 24 is connected to the upper part thereof.
Further, in the hot water storage tank T, a plurality of thermistors S serving as storage temperature detection means for detecting the temperature of the stored heat medium are provided at intervals in the vertical direction. And in this embodiment, the operation control part H is comprised so that the average value of the detected temperature of several thermistor S may be calculated | required as the temperature of the heat medium (hot water) stored in the hot water storage tank T. FIG.
Although not illustrated, the hot water storage tank T is provided with a heat medium supply port, and is configured so that the heat medium can be appropriately supplied.

  A water supply path 25 and a hot water supply path 26 for supplying water using tap water pressure are connected to the hot water supply heat exchanger 19. That is, the hot water supplied through the water supply passage 25 is heated by the heat medium flowing through the heating circulation passage 17, and the heated hot water is supplied through the hot water supply passage 26.

The hot water supply channel 26 is connected to a mixing water supply channel 27 branched from the water supply channel 25, and a mixing ratio between hot water from the hot water supply channel 26 and water from the mixing water supply channel 27 is adjusted at the connection location. A mixing valve 28 is provided as hot water mixing means for adjusting the hot water supply temperature.
A water supply thermistor 29 for detecting the water supply temperature is provided at a location upstream of the branch location of the mixing water supply channel 27 in the water supply channel 25.

  A hot water supply thermistor 30 that detects the temperature of hot water supplied from the hot water supply heat exchanger 19 to the hot water supply passage 26 is provided upstream of the mixing valve 28 in the hot water supply passage 26, and downstream of the mixing valve 28 in the hot water supply passage 26. The side portion includes a mixing thermistor 31 that detects the temperature of hot water mixed by the mixing valve 28 and a flow rate adjusting means that adjusts the flow rate of hot water supplied from the water supply path 25 to the hot water supply heat exchanger 19. The flow rate control valve 32 is provided.

A downstream side of the hot water supply channel 26 where the mixing thermistor 31 and the flow rate control valve 32 are provided is for supplying hot water to the general hot water supply channel 26A for supplying hot water to an unillustrated hot water tap such as a kitchen or a washroom. It branches off to the hot water passage 26B.
The general hot water supply path 26A is provided with a flow rate sensor 33 for detecting the flow rate of hot water flowing through the general hot water supply path 26A.
A hot water flow sensor 34 for detecting the flow rate of hot water flowing through the hot water passage 26B, a hot water solenoid valve 35, a vacuum breaker 36, and a hot water check valve 37 are provided in this order from the upstream side. ing.

The bath-heating heat exchanger 21 includes a bath return path 38 for returning hot water from the bathtub 3 to the bath-heating heat exchanger 21 and hot water heated by the bath-heating heat exchanger 21. A bath access path 39 for supplying to the bathtub 3 is connected, and a bath pump 40 is provided in the bath return path 38.
Then, by operating the bath pump 49 and circulating hot water in the bathtub 3 through the bath return path 38 and the bath going path 39, the hot water in the bathtub 3 is heated by the heating medium flowing through the heating circulation path 17. It is comprised so that it may heat with the heat exchanger 21 for bath reheating.
Therefore, in the present embodiment, the bath heating heat exchanger 21, the bath return path 38, the bath going path 39, and the bath pump 40 constitute the heating heater F for heating.

  In the bath return path 38, a water level sensor 41 that detects the water level of hot water in the bathtub 3 in order from the upstream side along the circulation direction of hot water in the bathtub 3, and a bath that detects the temperature of hot water in the bath return path 38. A return thermistor 42, a two-way valve 43, and a bath water flow switch 44 are provided.

  The hot water supply path 26B branched from the hot water supply path 26 described above is connected to the bath return path 38 from the bathtub 3 so that hot water can be supplied to the bathtub 3 through both the bath return path 38 and the bath return path 39. ing.

The heating heat exchanger 20 includes a heating return path 45 for returning the heating medium from the heating terminal D and a heating outgoing path 46 for supplying the heating medium heated by the heating heat exchanger 20 to the heating terminal D. Is connected, and the heating return path 45 is equipped with a heating pump 47.
Then, the heating pump 47 is operated to circulate the heating medium through the heating return path 37 and the heating outbound path 38, so that the heating medium is heated by the heating medium flowing through the heating circuit 17. It is comprised so that it may heat with the heat exchanger 20 for heating.

The heating return path 45 is provided with a heating return thermistor 48 for detecting the temperature of the heating medium in the heating return path 45 and an open-air expansion tank 49 in order from the upstream side along the circulation direction of the heating medium.
In addition, the heating outbound path 46 is provided with a heating outbound thermistor 50 that detects the temperature of the heating medium in the heating outbound path 46.
The heating return path 45 and the heating outgoing path 46 are connected in communication by a bypass path 51.

The operation control unit H executes hot water storage operation processing (heat storage operation) for controlling the operation of the circulation pump 14 in the combined heat and power supply device 1 by turning on the power, and heats the heat medium in the hot water storage tank T by the solar heating unit 4. Will do.
In addition, the operation control unit H is a general hot water supply process (general hot water supply operation) for supplying hot water of a target set temperature to the general hot water supply path 26A based on information instructed by the operation remote controller R, detection information of sensors, and the like. Hot water filling process (hot water filling operation) for supplying hot water at a target set temperature to the hot water supply passage 26B, reheating process (hot water operation) for keeping hot water in the bathtub 3 at the target set temperature, and a heating medium for heating The heating operation process (heating operation) for heating the to the target set temperature is executed.

  The operation control unit H activates the circulation pump 22 for circulating the heat medium when performing the general hot water supply process, the hot water filling process, the reheating process, and the heating operation process, and the hot water storage tank T When the temperature of the heat medium in the tank is equal to or higher than a set temperature (for example, 20 ° C.), the three-way valve 23 is switched so as to be in the state of passing through the tank, and the temperature of the heat medium in the hot water storage tank T is set to the set temperature ( For example, when the temperature is less than 20 ° C., the three-way valve 23 is switched so as to be in a bypass state, and when the temperature of the heat medium is insufficient, the auxiliary heat source unit 18 is operated.

  Incidentally, when the temperature of the heat medium in the hot water storage tank T is lower than a set temperature (for example, 20 ° C.), the three-way valve 23 is switched so as to be in a bypass state because the hot water storage tank T is not storing heat. When the auxiliary heat source unit 18 is operated and the heat medium is heated when the heat storage tank T is not storing heat in this way, the amount of heat generated by the auxiliary heater 18 is stored in the hot water storage tank T. This is because it is preferable not to do so.

  Although not described in detail, the auxiliary heat source unit 18 includes a control unit that controls the burner combustion amount, a heat medium temperature sensor that detects the temperature of the heated heat medium, and the like. In the operation process, the flowing heat medium is heated to a target set temperature (for example, 60 ° C.).

As is apparent from the above description, the present embodiment is configured to perform a general hot water supply process, a hot water filling process, a reheating process, and a heating operation process. Hereinafter, the hot water filling process will be described in detail. Detailed description of other processing is omitted in this document.
In the following description, the case where the temperature of the heat medium in the hot water storage tank T is equal to or higher than a set temperature (for example, 20 ° C.) will be described as an example.

When a hot water filling command is instructed by the driving remote controller R, the operation control unit H performs the hot water filling process.
However, the operation control unit H is set by a hot water supply flow rate sensor 33 installed in the general hot water supply passage 26A when a general hot water tap (not shown) to be installed at the tip of the general hot water supply passage 26A is opened. When water flow exceeding the amount is detected, the general hot water supply process of supplying hot water at the set target temperature while adjusting the mixing valve 28 is performed with priority over the hot water filling process.
The hot water filling command is a case where a hot water filling command is instructed by a hot water filling switch provided in the operation remote control R, or a hot water filling command is issued at the hot water filling time set by the driving remote control R. There are cases.

When the hot water filling process is started, the operation control unit H opens the hot water electromagnetic valve 35 and adjusts the flow rate control valve 32 for adjusting the flow rate of hot water supplied from the water supply path 25 to the hot water supply heat exchanger 19. The detected temperature of the hot water supply thermistor 30 (hereinafter abbreviated as hot water temperature) is higher, lower or the same as the set target temperature set by the operation remote controller R. Determine if there is.
Incidentally, the fact that the tapping temperature (detected temperature of the hot water supply thermistor 30) is the same as the set target temperature means that the difference between the tapping temperature and the set target temperature is within the set allowable range. Higher than the set target temperature means that the tapping temperature is higher than the set allowable range, and that the tapped temperature is lower than the set target temperature means that the tapped temperature is lower than the set allowable range. To do.

The operation control unit H operates the mixing valve 28 so as to reach the set target temperature (hereinafter abbreviated as a mixing process) when the tapping temperature (detected temperature of the hot water supply thermistor 30) is higher than the set target temperature. When the integrated value of the flow rate detected by the flow sensor 34 reaches the set target hot water filling amount set by the operation remote controller R, the hot water solenoid valve 35 is closed and the hot water filling process (hot water filling operation) is ended. Will do.
When hot water filling is started, even if the hot water temperature is higher than the set target temperature, and thereafter the hot water temperature becomes lower than the set target temperature, the hot hot water filling process described later is executed. .

  When the mixing control is performed (when the mixing valve 28 is operated), the operation control unit H feeds the mixing ratio of the mixing valve 28 based on the detected temperature of the hot water supply thermistor 30 and the detected temperature of the water supply thermistor 29. Based on the forward control and the detected temperature of the mixing thermistor 31, feedback control for correcting the mixing ratio set in the feedforward control is performed.

When the tapping temperature (detected temperature of the hot water supply thermistor 30) is the same as the set target temperature, the operation control unit H supplies the hot water as it is to the bathtub 3 and the flow rate detected by the hot water flow rate sensor 34. Is equal to the set target hot water amount set by the operation remote controller R, the hot water solenoid valve 35 is closed and the hot water filling process (hot water operation) is ended.
In addition, when hot water filling is started, even if the hot water temperature is the same as the set target temperature, if the hot water temperature becomes lower than the set target temperature thereafter, the hot water filling process described later is executed. If the detected temperature of the hot water supply thermistor 30 becomes higher than the set target temperature, the mixing process is executed.

  Incidentally, when the hot water temperature (detected temperature of the hot water supply thermistor 30) is the same as the set target temperature, when supplying hot water as it is to the bathtub 3, the mixing valve 28 does not mix hot water from the water supply passage 25. In the present embodiment, the mixing process is executed even when the tapping temperature is the same as the set target temperature.

  When the hot water temperature (detected temperature of the hot water supply thermistor 30) is lower than the set target temperature, the operation control unit H allows the hot water supplied from the water supply path 25 to the hot water supply heat exchanger 19 to pass while the auxiliary heat source unit 18 is stopped. By adjusting the flow rate to a lower side than the above-mentioned maximum amount by the flow rate adjustment valve 32, the temperature of the hot water heated by the hot water supply heat exchanger 19 (corresponding to the tapping temperature) is set to the set target temperature. When it is possible to adjust the temperature of the hot water heated by the hot water supply heat exchanger 19 and discharged from the hot water (corresponding to the hot water temperature) to the set target temperature, it is determined at that time A determination process is performed to determine whether or not the time required to fill the set target hot water amount with the hot water amount per unit time is within the set allowable time.

That is, when the hot water temperature (detected temperature of the thermistor 30) is lower than the set target temperature, the operation control unit H keeps the flow rate adjustment valve 32 from the opening corresponding to the maximum amount in the stopped state of the auxiliary heat source unit 18. Gradually adjust the opening to the side where the water decreases, and monitor the tapping temperature.
When the hot water temperature reaches the set target temperature before the opening of the flow rate adjustment valve 32 is adjusted to the minimum opening, the temperature of the hot water heated by the hot water supply heat exchanger 19 and discharged is set. If it is determined that the target temperature can be adjusted and the detected temperature of the hot water supply thermistor 30 does not reach the set target temperature even when the opening of the flow rate adjustment valve 32 is adjusted to the minimum opening, the hot water supply heat exchanger 19 is adjusted. It is determined that the temperature of the hot water that is heated and discharged at the temperature cannot be adjusted to the set target temperature.

Next, the operation control unit H can adjust the temperature of the hot water heated and discharged by the hot water supply heat exchanger 19 to the set target temperature by adjusting the flow rate adjustment valve 32 while the auxiliary heat source unit 18 is stopped. Is determined, the flow rate detected by the hot water flow rate sensor 34 is set as the hot water amount per unit time at that time, and the set target hot water amount is detected by the hot water flow rate sensor 34. By dividing by the flow rate, the time required to fill the set target hot water amount is obtained, and it is determined whether or not the time is within the set allowable time.
The setting allowable time is set as a time that does not cause inconvenience to the user, and is appropriately set, for example, between 15 minutes and 30 minutes.

The operation control unit H is in a stopped state of the auxiliary heat source unit 18 when the auxiliary heat source unit 18 is in a stopped state and can be filled with the set target temperature within the set allowable time by adjusting the flow rate control valve 32. In the case where the hot water filling process for filling the hot water of the set target temperature is performed by adjusting the flow control valve 32 and the hot water cannot be filled at the set target temperature within the set allowable time, the auxiliary heat source machine The hot water filling process is performed in which the hot water filling is performed in 18 operating states.
The integrated value of the flow rate detected by the hot water flow rate sensor 34 is set by the operation remote controller R in both cases of executing the hot water filling process and the hot water filling process. When the set target hot water filling amount is reached, the hot water solenoid valve 35 is closed, and the hot water filling process (hot water filling operation) is ended.

In the hot water filling process, first, the flow rate control valve 32 is adjusted to the maximum opening degree at which the flow rate becomes the maximum amount, and the auxiliary heat source unit 18 is operated with the adjustable minimum heating amount. When the detected temperature of the thermistor 30 is lower than the set target temperature, an increase in the heating amount of the auxiliary heat source unit 18 is obtained based on the detected temperature of the hot water supply thermistor 30 and the detected temperature of the water supply thermistor 29, and The adjustment of the heating amount is repeated.
By the way, the detected temperature of the hot water supply thermistor 30 when the auxiliary heat source unit 18 is operated with the adjustable minimum heating amount is set by adjusting the flow rate through the flow rate control valve 32 to the maximum opening degree. When the temperature is higher than the target temperature, the mixing process is performed so that the set target temperature is reached.

  Further, the detected temperature of the hot water supply thermistor 30 is set when the flow rate control valve 32 is adjusted to the maximum opening degree at which the flow rate becomes the maximum amount and the auxiliary heat source unit 18 is operated with the adjustable minimum heating amount. When it is the target temperature, the hot water is supplied to the bathtub 3 as it is.

  In addition, the operation control unit H, when the hot water filling command is commanded, when the auxiliary heat source unit 18 is operated for the heating operation process, and when performing the heating stop hot water filling process, When the auxiliary heat source unit 18 is operated for the heating operation process, the heating stop hot water filling process is not executed.

Hereinafter, the hot water filling process executed by the operation control unit H will be described based on the flowchart shown in FIG.
Incidentally, as described above, the operation control unit H sequentially performs the general hot water supply process, the hot water filling process, the reheating process, and the heating operation process, but in the following description, only the hot water filling process will be described. Further, if there is a request for the general hot water supply processing even during the hot water filling process, the operation control unit H interrupts the hot water filling process and executes the general hot water supply process. Description related to the processing is omitted.

First, it is determined whether or not a hot water filling is in progress (# 1). If the hot water filling is not in progress, it is determined whether or not there is a hot water filling command (# 2).
When the hot water filling instruction is not instructed, the process shifts to another process such as a heating operation process.

When it is determined at # 2 that a hot water filling command has been issued, the hot water solenoid valve 35 is opened, and a flow rate control valve 32 for adjusting the flow rate of hot water supplied from the water supply passage 25 to the hot water supply heat exchanger 19 is set. Then, the hot water filling start process is executed to adjust the maximum opening so that the flow rate becomes the maximum amount (# 3).
Thereafter, it is determined whether or not the hot water temperature (the temperature detected by the hot water supply thermistor 30) is lower than the set target temperature set by the operation remote controller R (# 4).

  When it is determined in # 4 that the tapping temperature is not lower than the set target temperature, that is, when it is determined that the tapping temperature is the same as the set target temperature or the tapping temperature is higher than the set target temperature, the mixing valve 28 is turned on. The mixing process to be operated is executed (# 5), and then the process proceeds to another process such as a heating operation process.

When it is determined at # 4 that the tapping temperature is lower than the set target temperature, a determination process is executed.
As described above, this determination processing is performed by gradually adjusting the flow rate adjustment valve 32 from the opening corresponding to the maximum amount to the opening on the side where the flow rate decreases while the auxiliary heat source unit 18 is stopped, and monitoring the tapping temperature. Thus, when the hot water temperature reaches the set target temperature before the opening of the flow rate adjustment valve 32 is adjusted to the minimum opening, the temperature of the hot water heated by the hot water supply heat exchanger 19 and discharged is set. It is determined that the temperature can be adjusted to the target temperature, and the temperature of the hot water heated and discharged by the hot water supply heat exchanger 19 is adjusted by adjusting the flow rate adjustment valve 32 while the auxiliary heat source unit 18 is stopped. When it is determined that the temperature can be adjusted, the flow rate detected by the hot water flow rate sensor 34 is set as the hot water amount per unit time, and the set target hot water amount is supplied to the hot water flow rate sensor 34. By dividing by the detected flow rate, Seeking time required to hot tension constant target water filling amount, the time is, so that it is determined whether within a set allowable time.

  Next, based on the determination result of the determination process (# 6), whether the hot water filling can be performed at the set target temperature within the set allowable time by adjusting the flow control valve 32 while the auxiliary heat source unit 18 is stopped. It is determined whether or not the heating can be stopped (# 7).

If it is determined in # 7 that heating cannot be stopped, the hot water filling process is executed (# 8), and then the process proceeds to another process such as a heating operation process.
In the hot water filling process, as described above, the auxiliary heat source unit 18 is operated while adjusting the heating amount, and the mixing valve 28 is operated as necessary.

  If it is determined in # 7 that the heating can be stopped, the heating stop flag used in the determination during filling is turned on as described later (# 9), and then the auxiliary heat source unit 18 is in operation. Is determined (# 10).

When it is determined at # 10 that the auxiliary heat source unit 18 is operated for the heating operation process or the like, the above-described # 8 heating hot water filling process is executed, and the auxiliary heat source unit 18 is also operated for the heating operation process. When it is determined that it is not operated for the reason, a heating stop hot water filling process is executed (# 11).
As described above, the heating stop hot water filling process is a process of filling hot water of the set target temperature by adjusting the flow rate control valve 32 while the auxiliary heat source unit 18 is stopped.
And after performing a hot water filling process and a heating stop hot water filling process, it will transfer to another processes, such as a heating process.

When it is determined in # 1 that the hot water filling is in progress, the integrated value of the flow rate detected by the hot water flow rate sensor 34, that is, the hot water filling amount is the set target hot water filling set by the operation remote controller R. It is determined whether or not the amount is reached (# 12).
If the hot water filling amount is the set target hot water filling amount, a stop process for closing the hot water solenoid valve 35 is executed (# 16), the heating stop flag is turned off (# 17), and then heating is performed. It shifts to another process such as an operation process.

When it is determined at # 12 that the hot water filling amount has not reached the set target hot water filling amount, it is determined whether or not the heating stop flag is “ON” (# 13), and it is determined that it is “ON”. If it is, it is determined whether or not the auxiliary heat source unit 18 is in operation by a heating operation process or the like (# 14).
When the auxiliary heat source unit 18 is not in operation, the # 11 heating stop hot water filling process is executed, and when the auxiliary heat source unit 18 is in operation, the hot hot water filling process # 8 is executed. .

When it is determined at # 13 that the heating stop flag is not “ON”, it is determined whether or not the hot water temperature (the detected temperature of the hot water supply thermistor 30) is lower than the set target temperature set by the operation remote controller R. (# 15).
When the tapping temperature is equal to or higher than the set target temperature, the # 5 mixing process is executed, and when the tapping temperature is lower than the set target temperature, the # 8 heating hot water filling process is executed.

  Incidentally, in the first embodiment, the case where the determination is made while actually adjusting the flow rate control valve 32 is exemplified as the determination processing. However, the temperature of the heat medium stored in the hot water storage tank T is supplied from the water supply path 25. On the basis of various information such as the temperature of hot water, the amount of hot water supplied from the water supply channel 25, the heat exchange rate of the heat exchanger 19 for hot water supply, etc. It is also possible to discriminate them.

[Second Embodiment]
Next, 2nd Embodiment which is embodiment of this invention is described based on drawing.
In the second embodiment, the configuration of the hot water storage tank T and the configuration of the hot water supply are different from those in the first embodiment, and accordingly, the control content executed by the operation control unit H is different. Since the configuration is the same as that of the first embodiment, only portions different from the first embodiment will be described.

That is, as shown in FIG. 3, the hot water storage tank T is hermetically sealed, and a tank water supply path 25 </ b> A branched from the water supply path 25 is connected to the bottom of the hot water storage tank T.
And the hot water supply path 26 is provided in the state branched from the heat-medium circulation path 17 which circulates the hot water supplied to the hot water storage tank T through the tank water supply path 25A.
A pressure relief valve 52 that opens when the tank internal pressure becomes equal to or higher than a set pressure is provided above the hot water storage tank T.

  That is, in the second embodiment, the hot water storage tank T is configured to store hot water used for general hot water supply or hot water filling, and when performing general hot water supply, the hot water storage tank is passed through the hot water supply passage 26 and the general hot water supply passage 26A. When the hot water of T is supplied and the hot water filling is performed, the hot water in the hot water storage tank T is hot filled in the bathtub 3 through the hot water supply passage 26 and the hot water filling 26B.

  The operation control unit H is configured to perform a general hot water supply process, a hot water filling process, a reheating process, and a heating operation process. Hereinafter, the hot water filling process will be described in detail, and other processes will be described. Detailed description will be omitted.

  When a hot water filling command is instructed by the driving remote controller R, the operation control unit H performs the hot water filling process.

  When the hot water filling process is started, the operation control unit H opens the hot water electromagnetic valve 35 and adjusts the flow rate control valve 32 for adjusting the flow rate of hot water supplied from the water supply path 25 to the hot water supply heat exchanger 19. Adjust the maximum opening so that becomes the maximum amount.

When the temperature of hot water stored in the hot water storage tank T (hereinafter referred to as hot water storage temperature) is higher than the set target temperature set by the operation remote controller R, the operation control unit H is set to the set target temperature. When the mixing valve 28 is operated (hereinafter abbreviated as a mixing process), and the integrated value of the flow rate detected by the hot water flow rate sensor 34 becomes the set target hot water amount set by the operation remote controller R, The hot water filling solenoid valve 35 is closed, and the hot water filling process (hot water filling operation) is ended.
In addition, when hot water filling is started, even if the hot water storage temperature is higher than the set target temperature, if the hot water storage temperature becomes lower than the set target temperature thereafter, the hot hot water filling process described later is executed. .

  When the mixing control is performed (when the mixing valve 28 is operated), the operation control unit H feeds the mixing ratio of the mixing valve 28 based on the detected temperature of the hot water supply thermistor 30 and the detected temperature of the water supply thermistor 29. Based on the forward control and the detected temperature of the mixing thermistor 31, feedback control for correcting the mixing ratio set in the feedforward control is performed.

When the hot water storage temperature is the same as the set target temperature, the operation control unit H supplies the hot water as it is to the bathtub 3, and the integrated value of the flow rate detected by the hot water flow rate sensor 34 indicates the operation remote controller R. When the set target hot water amount set in step S3 is reached, the hot water solenoid valve 35 is closed and the hot water filling process (hot water filling operation) is ended.
In addition, when hot water filling is started, even if the hot water storage temperature is the same as the set target temperature, if the hot water storage temperature becomes lower than the set target temperature after that, the hot water filling process described later is executed. Further, when the hot water storage temperature becomes higher than the set target temperature, the mixing process can be executed.

  By the way, when the hot water storage temperature is the same as the set target temperature, when the hot water is supplied to the bathtub 3 as it is, the mixing valve 28 is adjusted so as not to mix the hot water from the water supply path 25. In the present embodiment, description will be made assuming that the mixing process is performed even when the hot water storage temperature is the same as the set target temperature.

When the hot water storage temperature is lower than the set target temperature, the operation control unit H fills the hot water stored in the hot water storage tank T in the bathtub 3 with the set target hot water amount, and then uses the heating means F for reheating. A determination process is performed to determine whether or not the amount of reheating when the hot water of the bathtub 3 is heated to the set target temperature is within the set allowable amount.
Then, when the reheating amount is within the set allowable amount, the operation control unit H puts hot water stored in the hot water storage tank T into the bathtub 3 while the auxiliary heat source unit 18 serving as the hot water filling heating unit is stopped. Hot water filling is performed at the set target hot water amount, and then the heating stop hot water filling process for heating the hot water in the bathtub to the set target temperature is performed by the heating means F for additional heat, and the additional heat amount is within the set allowable amount. If not, the hot water filling process is performed in which the hot water filling is performed in the operating state of the hot water filling means.

The amount of reheating in the above-described determination processing is obtained by calculation based on the hot water storage temperature (temperature of hot water stored in the hot water storage tank T), the set target temperature, the set target hot water filling amount, and the heat efficiency of the reheating. It will be.
In other words, the required amount of heat can be obtained by multiplying the difference between the set target temperature and the hot water storage temperature by the set target hot water filling amount, and the required heat amount can be calculated by dividing the required heat amount by the additional heat efficiency. The amount of heat output by the heating means for firing can be obtained as the amount of reheating.

Further, the set allowable amount is determined in consideration of the minimum heating amount (minimum input) of the auxiliary heat source machine 18 as the hot water heating means.
That is, in the case of the present embodiment, the auxiliary heat source unit 18 as the hot water filling heating unit is operated in a state in which hot water (heat medium) flows through the heating circulation path 17. The minimum heating amount of 18 is considerably larger than zero.
Therefore, when the hot water storage temperature (the temperature of the hot water stored in the hot water storage tank T) is lower than the set target temperature but the difference from the set target temperature is small, such hot water is used as an auxiliary heat source device with the minimum heating amount. Even when heated at 18, the temperature of the hot water is higher than the set target temperature. In other words, the auxiliary heat source unit 18 outputs a larger amount of heat than the amount of heat necessary to heat the hot water at the hot water storage temperature to the set target temperature.

  Therefore, when the hot water storage temperature is lower than the set target temperature, but the difference from the set target temperature is small, the set target is set against the difference between the temperature of the hot water heated by the auxiliary heat source unit 18 and the hot water storage temperature. By multiplying the amount of hot water filling, the amount of heat consumed can be obtained, and by dividing the amount of heat consumed by the heating efficiency of the auxiliary heat source unit 18, the amount of heat output by the auxiliary heat source unit 18 can be obtained. The amount of heat can be set to a set allowable amount.

  As is apparent from the above description, the set allowable amount is related to the minimum heating amount of the auxiliary heat source unit 18 as the hot water heating means, and the set allowable amount is the hot water stored in the hot water storage tank T. The temperature (hot water storage temperature) increases as close as possible to the set target temperature, and increases as the set target hot water amount increases. That is, if the heating efficiency of the auxiliary heat source unit 18 does not change due to a change in the hot water storage temperature, the set allowable amount does not change depending on the hot water storage temperature or the set target temperature, but changes depending on the set target hot water filling amount. However, since the set target hot water amount for hot water filling does not vary greatly, it is possible to set a constant value as the set allowable amount based on the standard set target hot water amount.

  Then, based on the result of the discrimination process, the operation control unit H, when the replenishment amount is within the set allowable amount, the hot water stored in the hot water storage tank T is heated to the bathtub 3 at the set target hot water amount. After that, a heating stop hot water filling process for heating the hot water in the bathtub 3 to the set target temperature is performed by the heating means F for reheating, and when the reheating amount is not within the set allowable amount. Then, the hot water filling process for performing the hot water filling in the operating state of the hot water filling heating means is executed.

In the hot water filling process, the heating amount of the auxiliary heat source unit 18 is obtained based on the difference between the hot water storage temperature and the set target temperature and the hot water filling amount detected by the hot water filling amount sensor 34, and the heating amount is calculated. The auxiliary heat source unit 18 is operated so as to output, and the heating amount of the auxiliary heat source unit 18 is corrected based on the temperature detected by the hot water supply thermistor 30.
Incidentally, also in the hot water filling process, a mixing process is performed as necessary.

In addition, the operation control unit H, when the hot water filling command is commanded, when the auxiliary heat source unit 18 is operated for the heating operation process, and when performing the heating stop hot water filling process, When the auxiliary heat source unit 18 is activated for the heating operation process, the heating hot water filling process is executed without executing the heating stop hot water filling process.
Incidentally, when the auxiliary heat source unit 18 is operated in the heating operation process, in the case of this embodiment, the auxiliary heat source unit 18 discharges hot water (heat medium) having a set temperature (for example, 60 ° C.). Thus, the hot water filling process in the state where the auxiliary heat source device 18 is operated is performed by adjusting the temperature of the hot water so that the set target temperature is reached in the mixing process.

Hereinafter, the hot water filling process executed by the operation control unit H will be described based on the flowchart shown in FIG.
Incidentally, as described above, the operation control unit H sequentially performs the general hot water supply process, the hot water filling process, the reheating process, and the heating operation process, but in the following description, only the hot water filling process will be described. Further, if there is a request for the general hot water supply processing even during the hot water filling process, the operation control unit H interrupts the hot water filling process and executes the general hot water supply process. Description related to the processing is omitted.

First, it is determined whether or not the hot water is being filled (# 21). If not, it is determined whether or not there is a hot water command (# 22).
When the hot water filling instruction is not instructed, the process shifts to another process such as a heating operation process.

When it is determined at # 22 that a hot water filling command has been issued, the hot water solenoid valve 35 is opened, and the flow rate control valve 32 for adjusting the flow rate of hot water supplied from the water supply passage 25 to the hot water supply heat exchanger 19 is set. Then, a hot water filling start process is performed to adjust the maximum opening so that the flow rate becomes the maximum amount (# 23).
Thereafter, it is determined whether the hot water storage temperature (the temperature of the hot water stored in the hot water storage tank T) is lower than the set target temperature set by the operation remote controller R (# 24).

  When it is determined at # 24 that the hot water storage temperature is not lower than the set target temperature, that is, when it is determined that the hot water storage temperature is the same as the set target temperature or the hot water storage temperature is higher than the set target temperature, the mixing valve 28 is turned on. The mixing process to be operated is executed (# 25), and then the process proceeds to another process such as a heating operation process.

When it is determined at # 24 that the hot water storage temperature is lower than the set target temperature, a determination process is executed.
As described above, this discrimination processing is performed by filling the hot water stored in the hot water storage tank T into the bathtub 3 with the set target hot water amount, and then setting the hot water in the bathtub 3 with the additional heating means F to the set target temperature. It is determined whether or not the amount of tracking when it is assumed to be heated is within a set allowable amount.

  Next, based on the determination result of the determination process (# 26), the hot water stored in the hot water storage tank T is filled in the bathtub 3 with the set target amount of hot water, and then the reheating heating means F uses the bathtub. It is determined whether or not the reheating amount when it is assumed that the hot water of No. 3 is heated to the set target temperature is within the set allowable amount, that is, whether or not the heating can be stopped (# 27).

If it is determined in # 27 that heating cannot be stopped, the hot water filling process is executed (# 28), and then the process proceeds to another process such as a heating operation process.
In the hot water filling process, as described above, the auxiliary heat source unit 18 is operated while adjusting the heating amount, and the mixing valve 28 is operated as necessary.

  If it is determined in # 27 that the heating can be stopped, the heating stop flag used in the determination during filling is turned on as described later (# 29), and then the auxiliary heat source unit 18 is in operation. Is determined (# 30).

When it is determined at # 30 that the auxiliary heat source unit 18 is operated for the heating operation process or the like, the above-described heating hot water filling process of # 28 is executed, and the auxiliary heat source unit 18 is operated for the heating operation or the like. When it is determined that the operation is not performed for the reason, the heating stop hot water filling process is executed (# 31).
And after performing a hot water filling process and a heating stop hot water filling process, it will transfer to another processes, such as a heating operation process.

  In the heating stop hot water filling process, as described above, hot water stored in the hot water storage tank T is filled in the bathtub 3 with a set target hot water amount with the auxiliary heat source unit 18 stopped, and then the heating means for reheating In this embodiment, the hot water in the bathtub 3 is heated to the set target temperature by the heating means F for reheating. This is a configuration that is performed by a chasing process different from the tensioning process. For this reason, chasing setting (see # 38) is performed in the hot water tensioning process.

  When it is determined at # 21 that the hot water filling is being performed, the integrated value of the flow rate detected by the hot water flow rate sensor 34, that is, the hot water filling amount is set to the set target hot water filling set by the operation remote controller R. It is determined whether or not the amount is reached (# 32).

When it is determined at # 32 that the hot water filling amount has not reached the set target hot water filling amount, it is determined whether or not the heating stop flag is “ON” (# 33), and is determined to be “ON”. When it is determined, it is determined whether or not the auxiliary heat source unit 18 is in operation by a heating operation process or the like (# 34).
When the auxiliary heat source unit 18 is not in operation, the # 31 heating stop hot water filling process is executed, and when the auxiliary heat source unit 18 is in operation, the hot hot water filling process # 28 is executed. .

When it is determined at # 33 that the heating stop flag is not “ON”, it is determined whether or not the hot water storage temperature is lower than the set target temperature set by the operation remote controller R (# 35).
When the hot water storage temperature is equal to or higher than the set target temperature, the mixing process of # 25 is executed, and when the hot water storage temperature is lower than the set target temperature, the hot water filling process of # 28 is executed.

If it is determined at # 32 that the hot water filling amount is the set target hot water filling amount, a stop process for closing the hot water solenoid valve 35 is executed (# 36), and then the heating stop flag is “ON”. Is determined (# 37).
When the heating stop flag is “ON”, a reheating setting for heating the hot water in the bathtub 3 to the set target temperature is performed in a reheating process which is a process different from the main hot water filling process. (# 38).

  If it is determined in # 37 that the heating stop flag is not “ON”, or if a reheating setting is performed in # 38, the process proceeds to another process such as a heating operation process.

  In the reheating process described above, for example, the auxiliary heater 18 is operated so as to heat the hot water flowing through the heating circuit 17 to a set temperature (for example, 60 ° C.), and the bath pump 40 is operated. Then, when the temperature detected by the bath return thermistor 42 reaches the target set temperature, the chasing is terminated.

[Another embodiment]
Next, another embodiment will be described.
(B) In the above embodiment, the case where a solar heater is used as the heat source means for storing heat in the heat storage tank is illustrated, but the heat source means for storing heat in the heat storage tank collects exhaust heat of the engine that drives the generator. Various devices such as an exhaust heat recovery means, an exhaust heat recovery means for recovering exhaust heat of the fuel cell, and a heater driven by midnight power of a commercial power source can be used.

(B) In the above embodiment, the case where the general hot water supply process and the heating operation process are executed in addition to the hot water filling process is illustrated, but the general hot water supply process and the heating operation process may not be performed.

(C) Various forms of the hot water filling treatment can be applied, and the present invention may be implemented in forms other than those described in the above embodiment.

(D) In the above embodiment, the case where the auxiliary heat source machine constituting the heating means for hot water filling is used as the heat source of the heating means for heating, but the heat source of the heating means for heating is used as the auxiliary heat source machine. May be implemented separately.

(E) In the first embodiment, in the discrimination process, the control means uses the flow rate adjusting means to pass the flow rate of hot water supplied from the water supply path to the heat exchange section while the hot water heating means is stopped. By adjusting to a decreasing side rather than a large amount, it is determined whether or not the temperature of the hot water heated and discharged at the heat exchanging section can be adjusted to the set target temperature, and the temperature of the hot water discharged by the determination is determined. Can be adjusted to the set target temperature, it is determined whether the time required for filling the set target hot water amount is within the set allowable time based on the hot water amount per unit time at that time. If the hot water filling can be performed at the set target temperature within the set allowable time based on the result of the determination process, the set target temperature is adjusted by adjusting the flow rate adjusting means while the hot water heating means is stopped. Ka to fill the hot water If the hot water filling process is executed, and if the hot water filling cannot be performed at the set target temperature within the set allowable time, the hot water filling process is performed in which the hot water filling means is filled in the operating state of the hot water filling means. Although the case where it comprises is illustrated, when there is no particular attention to the time from the start to the end of hot water filling, it can be implemented in the form described below.

  That is, in the discrimination process, by adjusting the flow rate of the hot water supplied from the water supply path to the heat exchange part to the decreasing side from the maximum amount by the flow rate adjusting means in the stopped state of the hot water heating means, When it is possible to adjust the temperature of the hot water heated and discharged from the heat exchanger to the set target temperature, and when filling can be performed at the set target temperature, the heating means for filling is stopped. In the state, when the hot water filling process for filling the hot water at the set target temperature is performed by adjusting the flow rate adjusting means, and the hot water cannot be filled at the set target temperature within the set allowable time, You may comprise so that the hot water filling process which performs hot water filling in the operating state of the heating means may be performed.

3 Bath 4 Heat source means 18 Hot water heating means 19 Heat exchange section 25 for hot water heating Water supply path 28 Hot water mixing means 32 Flow rate adjustment means F Reheating heating means H Control means T Thermal storage tank

Claims (3)

Bath bathing apparatus provided with hot water filling means for hot water filling a bathtub using heat stored in a heat storage tank for storing heat generated by the heat source means, and control means for controlling the operation of the hot water filling means. Because
The heat storage tank is configured to store hot water supplied to the bathtub,
When the temperature of the hot water stored in the heat storage tank is higher than the set target temperature, the hot water mixing means for mixing the hot water from the water supply channel with the hot water filling means so that the temperature of the hot water becomes the set target temperature, When the temperature of the hot water stored in the heat storage tank is lower than the set target temperature, the hot water filling heating means that operates to bring the temperature of the hot water to the set target temperature, and the hot water in the bathtub is tracked. And a heating means for reheating,
When the control means is instructed to fill water,
In the case where the temperature of hot water stored in the heat storage tank is lower than the set target temperature,
When it is assumed that hot water stored in the heat storage tank is filled in the bathtub at a set target hot water amount, and then the hot water in the bathtub is heated to the set target temperature by the heating means for reheating. When the reheating amount is within the set permissible amount, a determination process is performed to determine whether or not the reheating amount is within the set permissible amount. Then, hot water stored in the heat storage tank is filled in the bathtub with the set target hot water amount, and then the hot water in the bathtub is heated to the set target temperature by the heating means for reheating. When the tensioning process is executed and the replenishment amount is not within the set allowable amount, the heating and hot water filling process is performed to perform the hot water filling in the operating state of the hot water filling heating means. Bath bathing equipment. The hot water heating means is configured to heat a heating medium other than hot water for hot water filling,
If the hot water filling command is issued when the control means is operating the hot water heating means for heating a heating medium other than hot water for hot water filling, the hot water filling process is executed. The bath hot-water filling device according to claim 1, which is configured to do so.   The bath hot-water device according to claim 1 or 2, wherein the heat source means is a solar heat collector.

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