JP2022024755A - Bathing system - Google Patents

Abstract

To provide a bathing system capable of improving safety of a bather by a simple structure using an original configuration.SOLUTION: A bathing system includes: a bathtub water circulation circuit K circulating bathtub water in a bathtub 1; a bathtub water circulation pump 37 circulating bathtub water through the bathtub water circulation circuit K; a bathtub water heating part D heating the bathtub water flowing in the bathtub water circulation circuit K; and an operation control part C performing after-boiling operation control that operates the bathtub water circulation pump 37 in the state that the bathtub water heating part D is operated when an after-boiling operation command is given. When an abnormal state is detected by an abnormality detection part Q that detects that it is in an abnormal condition that a bather bathing in the bathtub 1 can be abnormal, the operation control part C executes bathtub water temperature lowering control that operates the bathtub water circulation pump 37 in the state that heating operation of the bathtub water heating part D is stopped.SELECTED DRAWING: Figure 1

Description

The present invention includes a bathtub water circulation circuit in which bathtub water in a bathtub is circulated, a bathtub water circulation pump in which bathtub water is circulated through the bathtub water circulation circuit, and a bathtub water heating unit for heating bathtub water flowing in the bathtub water circulation circuit. The present invention relates to a bathing system provided with an operation control unit for executing a reheating operation control for operating the bathtub water circulation pump in a state where the bathtub water heating unit is heated and operated when a reheating operation command is issued.

In such a bathing system, the temperature of the bathtub water in the bathtub is raised to a temperature preferred by the bather (for example, 41 ° C.) by executing the reheating operation control, and good bathing can be performed.
That is, when the bathtub water in the bathtub is lower than the bather's favorite temperature (for example, 41 ° C.), the temperature of the bathtub water in the bathtub is changed to the bather's preference by executing the reheating operation control. The temperature can be raised to the above temperature (for example, 41 ° C.).

As a conventional example of such a bathing system, when an abnormality occurs such as when the heart rate detected by the heart rate sensor that detects the heart rate of a bather bathing in the bathtub exceeds the threshold value, the drain plug of the bathtub is opened. Some are designed to improve the safety of bathers by draining bathtub water (see, for example, Patent Document 1).

Further, as another conventional example, a human sensation sensor that detects the position information of a bather bathing in a bathtub, or a heart rate detected by a heart rate sensor that detects the heart rate or when the bather does not move for a certain period of time or more. When an abnormality occurs, such as when the number exceeds the threshold value, water is supplied to the bathtub to lower the temperature of the bathtub water in the bathtub to the set lowering temperature (for example, 36 ° C.). (See, for example, Patent Document 2).

By the way, in Patent Document 2, in order to prevent hot water from overflowing from the bathtub or drowning a fainted bather by supplying water to the bathtub, the drain plug of the bathtub is opened and the bathtub water is used. Is configured to drain.

Japanese Unexamined Patent Publication No. 2004-275347 Japanese Unexamined Patent Publication No. 2018-164691

One of the abnormalities that can occur during bathing is heat stroke of the bather. In such a case, the bather continues to bathe in hot water (for example, 41 ° C) without consciousness. That is dangerous.
In Patent Document 1, when an abnormality of a bather is detected, the bathtub water can be discharged to avoid the danger of the bather. However, in order to discharge the bathtub water, the drain plug of the bathtub is automatically operated. It is necessary to configure it so that it can be opened and closed with, and there is a disadvantage that the overall configuration is complicated and expensive due to the installation of a drain valve that can be opened and closed automatically.

In Patent Document 2, when an abnormality of a bather is detected, water is supplied to the bathtub so as to lower the temperature of the bathtub water in the bathtub to a set lowering temperature (for example, 36 ° C.). The existing configuration can be used to avoid the danger of bathers.
However, in order to prevent the fainted bather from drowning, it is necessary to open the drain plug of the bathtub to drain the bathtub water, and even in this case, install a drain valve that can be opened and closed automatically. This has the disadvantage that the overall configuration is complicated and expensive.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a bathing system capable of improving the safety of a bather with a simple configuration using the original configuration.

The bathing system of the present invention includes a bathtub water circulation circuit in which bathtub water in a bathtub is circulated, a bathtub water circulation pump in which bathtub water is circulated through the bathtub water circulation circuit, and bathtub water for heating bathtub water flowing in the bathtub water circulation circuit. A heating unit and an operation control unit that executes a reheating operation control to operate the bathtub water circulation pump in a state where the bathtub water heating unit is heated and operated when a reheating operation command is commanded are provided. And its characteristic composition is
An abnormality detection unit is provided to detect that the bather bathing in the bathtub is in an abnormal state that can be abnormal.
When the abnormality detection unit detects the abnormality state, the operation control unit executes the bathtub water temperature drop control for operating the bathtub water circulation pump in a state where the heating operation of the bathtub water heating unit is stopped. At the point.

That is, when an abnormal state is detected by the abnormality detecting unit that detects that the bather bathing in the bathtub is in an abnormal state that can be abnormal, the operation control unit stops the heating operation of the bathtub water heating unit. In, the bathtub water temperature drop control for operating the bathtub water circulation pump will be executed.

When the bathtub water temperature drop control is executed, the bathtub water flows through the bathtub water circulation circuit in a state where the heating operation of the bathtub water heating unit is stopped, so that the heat of the bathtub water flows from the pipeline surface of the bathtub water circulation circuit. By dissipating heat to the atmosphere, the temperature of the circulating bathtub water decreases, and as a result, the temperature of the bathtub water in the bathtub decreases.

By the way, in the state where the bathtub water circulation pump is stopped, the temperature of the hot water remaining in the bathtub water circulation circuit is considerably lower than the temperature of the bathtub water in the bathtub. When executed, the temperature of the bathtub water in the bathtub will also decrease due to the flow of the low-temperature hot water remaining in the bathtub water circulation circuit into the bathtub.

Therefore, the temperature of the bathtub water in the bathtub is lowered to prevent the bather who bathes in the bathtub from continuing to bathe in the hot bathtub water, and the bather who bathes in the bathtub bathes in the low temperature bathtub water. It is possible to improve the safety of bathers because it can bring about a state of bathing.

Moreover, the bathtub water temperature drop control can be performed by using the originally equipped configuration for executing the reheating operation control without adding new equipment, so that the configuration is simple. It will be possible to improve the safety of bathers.

In short, according to the characteristic configuration of the bathing system of the present invention, the safety of the bather can be improved by a simple configuration using the original configuration.

A further characteristic configuration of the bathing system of the present invention is that the operation control unit increases the circulation amount of bathtub water through the bathtub water circulation circuit in the bathtub water temperature decrease control as compared with the reheating operation control. The point is to operate the bathtub water circulation pump.

That is, when the bathtub water temperature drop control is executed, the circulation amount of the bathtub water through the bathtub water circulation circuit becomes larger than that of the reheating operation control. The efficiency of dissipating heat from the surface of the bathtub water circulation circuit to the atmosphere can be increased, and the temperature of the bathtub water in the bathtub can be rapidly lowered.

By the way, when the bathtub water temperature drop control is executed, the rotation speed of the bathtub water circulation pump is increased in order to increase the circulation amount of the bathtub water, but in the reheating operation control, the rotation speed of the bathtub water circulation pump is not set. Since it is not increased as necessary, it is possible to suppress premature deterioration of the bathtub water circulation pump.

In short, according to a further characteristic configuration of the bathing system of the present invention, the temperature of the bathtub water in the bathtub can be rapidly lowered.

A further characteristic configuration of the bathing system of the present invention is a burner heating type heat exchanger in which the bathtub water heating unit is heated by a bathtub water heating burner.
In the reheating operation control, the operation control unit burns and operates the bathtub water heating burner in a state where the bathtub water blower fan that supplies combustion air to the bathtub water heating burner is operated, and the bathtub water temperature. The point is to maintain the bathtub water heating burner in the combustion stop state in the reduction control.

That is, the tub water heating unit is configured to include a burner heating type heat exchanger that is heated by the tub water heating burner, and in the reheating operation control, the tub water that supplies combustion air to the tub water heating burner. The tub water heating burner will be burned and operated with the blower fan activated.

On the other hand, in the bathtub water temperature drop control, the bathtub water heating burner is maintained in the combustion stop state, and the heating of the bathtub water flowing through the bathtub water circulation circuit is stopped.
Then, when the bathtub water flowing through the bathtub water circulation circuit flows through the burner heating type heat exchanger, the temperature of the bathtub water can be lowered by the heat dissipation action of the burner heating type heat exchanger, so that the bathtub water in the bathtub can be lowered. The temperature can be lowered quickly.

In this case, as described above, if the rotation speed of the circulation pump is increased to increase the circulation amount of the bathtub water, the efficiency of heat dissipation by the burner heating type heat exchanger is increased, and the bathtub in the bathtub is used. It is possible to lower the temperature of water more quickly.

In short, according to a further characteristic configuration of the bathing system of the present invention, the temperature of the bathtub water in the bathtub can be rapidly lowered by the heat dissipation action of the burner heating type heat exchanger.

A further characteristic configuration of the bathing system of the present invention is that the operation control unit operates the bathtub water blower fan in the bathtub water temperature drop control.

That is, in the bath water temperature drop control, the bath water heating burner is maintained in the combustion stop state, but the bath water blower fan is operated, so that the burner heating type heat is generated by the air blown by the bath water blower fan. By cooling the exchanger, the efficiency of heat dissipation by the burner heating type heat exchanger can be further increased, and the temperature of the tub water in the tub can be lowered more quickly.

In short, according to a further characteristic configuration of the bathing system of the present invention, the efficiency of heat dissipation by the burner heating type heat exchanger can be further increased, and the temperature of the bathtub water in the bathtub can be lowered more quickly.

A further characteristic configuration of the bathing system of the present invention is that the bathtub has a larger amount of air supplied by the blower fan for bathtub water than the reheating operation control in the bathtub water temperature drop control. The point is to operate the water blower fan.

That is, when the bathtub water temperature drop control is executed, the amount of air supplied by the bathtub water blower fan becomes larger than that of the reheating operation control. , The efficiency of heat dissipation by the burner heating type heat exchanger can be further increased, and the temperature of the bathtub water in the bathtub can be rapidly lowered.

By the way, when the bathtub water temperature drop control is executed, the rotation speed of the bathtub water blower fan is increased in order to increase the air supply amount by the bathtub water blower fan, but in the reheating operation control, the bathtub water is used. Since the rotation speed of the blower fan for bathtub water is not increased unnecessarily, premature deterioration of the blower fan for bathtub water can be suppressed.

In short, according to the further characteristic configuration of the bathing system of the present invention, the efficiency of the heat dissipation action by the burner heating type heat exchanger can be further increased, and the temperature of the bathtub water in the bathtub can be rapidly lowered.

A further characteristic configuration of the bath system of the present invention is a heat medium circulation circuit in which a heat medium is circulated, a heat medium circulation pump that circulates the heat medium through the heat medium circulation circuit, and heat flowing in the heat medium circulation circuit. A heat medium heating heat exchanger for heating the medium, a heat medium heating burner for heating the heat medium heating heat exchanger, and a heat medium blowing fan for supplying combustion air to the heat medium heating burner are provided. Be,
The bathtub water heating unit is a liquid heat exchanger that exchanges heat between the bathtub water flowing through the bathtub water circulation circuit and the heat medium flowing through the heat medium circulation circuit.
In the reheating operation control, the operation control unit burns and operates the heat medium heating burner in a state where the heat medium circulation pump and the heat medium blower fan are operated, and in the bath water temperature drop control, the operation is described. The point is to maintain the heat medium heating burner in the combustion stopped state while the heat medium circulation pump is operated.

That is, a heat medium circulation circuit for circulating the heat medium is provided for the heat consumption terminal such as a floor heating panel, and the heat medium circulation pump is used to circulate the heat medium while operating the heat medium blower fan. By burning the heat medium heating burner, the circulated heat medium can be heated to a high temperature and heat can be supplied to the heat consuming terminal.
Then, the bath water can be reheated by exchanging heat between the bath water flowing through the bath water circulation circuit and the heat medium flowing through the heat medium circulation circuit with a liquid heat exchanger.

That is, in the reheating operation control, the bathtub water can be reheated by burning the heat medium heating burner while operating the heat medium circulation pump and the heat medium blower fan.

On the other hand, in the bath water temperature drop control, the heat of the heat medium is transferred to the pipeline surface of the heat medium circulation circuit by keeping the heat medium heating burner in the combustion stop state while the heat medium circulation pump is operated. As a result of the heat being dissipated into the atmosphere and the heat of the heat medium being dissipated by the heat exchanger for heating the heat medium, the temperature of the circulated heat medium is lowered, and as a result, the bath water flowing through the bath water circulation circuit By exchanging heat with the heat medium flowing through the heat medium circulation circuit with a liquid heat exchanger, the temperature of the bath water flowing through the bath water circulation circuit can be lowered.

By the way, in the liquid heat exchanger as the bath water heating part, the heating operation is stopped by stopping the combustion of the heat medium heating burner, but the heat medium heating burner is burning until just before. In the state, even if the heat medium heating burner is stopped from burning, the heat medium flowing through the heat medium circulation circuit may temporarily become hot, but after that, the heat flowing through the heat medium circulation circuit may become high. The temperature of the medium will drop.

In this case, as described above, if the rotation speed of the bathtub water circulation pump is increased to increase the circulation amount of the bathtub water, the bathtub water flowing through the bathtub water circulation circuit and the heat flowing through the heat medium circulation circuit are heated. It becomes easier to cool with a medium, and the temperature of the bathtub water in the bathtub can be lowered more quickly.

Therefore, in the bathtub water temperature drop control, the heat of the bathtub water is radiated to the atmosphere from the pipeline surface of the bathtub water circulation circuit, so that the temperature of the circulated bathtub water is lowered and the bathtub water is lowered. The heat is dissipated even in the liquid heat exchanger, and the temperature of the bath water in the bathtub can be quickly lowered.

In short, according to a further characteristic configuration of the bathing system of the present invention, the temperature of the bathtub water in the bathtub can be rapidly lowered by the heat dissipation action of the liquid heat exchanger.

Further characteristic configurations of the bathing system of the present invention are
The operation control unit operates the heat medium circulation pump so that the circulation amount of the heat medium through the heat medium circulation circuit is larger than that of the reheating operation control in the bathtub water temperature drop control. ..

That is, when the bath water temperature drop control is executed, the circulation amount of the heat medium through the heat medium circulation circuit becomes larger than that of the reheating operation control. The efficiency of dissipating the heat of the heat medium from the pipeline surface of the heat medium circulation circuit to the atmosphere can be increased to appropriately lower the temperature of the heat medium, and as a result, the temperature of the bath water in the bathtub can be rapidly lowered. can do.

By the way, when the bath water temperature drop control is executed, the rotation speed of the heat medium circulation pump is increased in order to increase the circulation amount of the heat medium, but in the reheating operation control, the rotation speed of the heat medium circulation pump is increased. Is not unnecessarily increased, so that premature deterioration of the heat medium circulation pump can be suppressed.

In short, according to a further characteristic configuration of the bathing system of the present invention, the temperature of the bathtub water in the bathtub can be rapidly lowered.

A further characteristic configuration of the bathing system of the present invention is that the operation control unit operates the blower fan for a heat medium in the bathtub water temperature drop control.

That is, in the control of lowering the temperature of the bath water, the heat medium heating burner is maintained in the combustion stop state, but the heat medium blower fan is operated, so that the air blown by the heat medium blower fan is used for heat medium heating. By cooling the heat exchanger, the efficiency of heat dissipation by the heat exchanger for heating the heat medium is further increased, the temperature of the heat medium is lowered more appropriately, and as a result, the temperature of the bath water in the bath is made faster. Can be reduced to.

In short, according to the further characteristic configuration of the bathing system of the present invention, the efficiency of heat dissipation by the heat exchanger for heating the heat medium can be further increased, and the temperature of the bathtub water in the bathtub can be lowered more quickly.

A further characteristic configuration of the bathing system of the present invention is that the operation control unit increases the amount of air supplied by the blower fan for the heat medium in the bathtub water temperature decrease control as compared with the reheating operation control. The point is to operate the medium blower fan.

That is, when the bath water temperature drop control is executed, the amount of air supplied by the heat medium blower fan becomes larger than that of the reheating operation control, so that the flow velocity of the air supplied to the heat medium heating heat exchanger increases. As a result, the efficiency of heat dissipation by the heat exchanger for heating the heat medium can be further increased, and the temperature of the heat medium can be lowered more appropriately, and as a result, the temperature of the bath water in the bath can be lowered more quickly. Can be done.

By the way, when the bath water temperature drop control is executed, the rotation speed of the heat medium blower fan is increased in order to increase the air supply amount by the heat medium blower fan, but in the reheating operation control, the heat medium is used. Since the rotation speed of the blower fan for heat medium is not increased unnecessarily, premature deterioration of the blower fan for heat medium can be suppressed.

In short, according to the further characteristic configuration of the bathing system of the present invention, the efficiency of the heat dissipation action by the heat exchanger for heating the heat medium can be further increased, and the temperature of the bathtub water in the bathtub can be rapidly lowered.

A further characteristic configuration of the bathing system of the present invention is a bypass state in which the heat medium flowing through the heat medium circulation circuit is made to flow by bypassing the bath water heating unit and a non-flowing state via the bath water heating unit. A switching unit for switching to the bypass state and a heat medium temperature detecting unit for detecting the temperature of the heat medium flowing through the heat medium circulation circuit are provided.
When the heat medium temperature detected by the heat medium temperature detection unit is higher than the setting start temperature in the bath water temperature drop control, the operation control unit puts the switching unit in the bypass state and sets the heat medium. When the heat medium temperature detected by the temperature detection unit is equal to or lower than the set start temperature, the switching unit is placed in the non-bypass state.

That is, in the bath water temperature drop control, when the heat medium temperature detected by the heat medium temperature detector that detects the temperature of the heat medium flowing through the heat medium circulation circuit is higher than the set start temperature, the heat medium circulation circuit The heat medium flowing through the bath water circulation circuit is bypassed and flowed to prevent the bath water flowing through the bath water circulation circuit from being heated by the high-temperature heat medium flowing through the heat medium circulation circuit.

Then, when the heat medium temperature detected by the heat medium temperature detection unit is equal to or lower than the set start temperature, the heat medium flowing through the heat medium circulation circuit is flowed through the bath water heating unit to flow the heat medium circulation circuit. The tub water flowing through the tub water circulation circuit is cooled by a low-temperature heat medium flowing through the tub water circulation circuit.

That is, when the heat medium heating burner is burning or immediately after the heat medium heating burner is burned when the bath water temperature drop control is started, the temperature of the heat medium flowing through the heat medium circulation circuit is high. At such a high temperature, when the heat medium flowing through the heat medium circulation circuit is made to flow through the bath water heating unit, the bath water flowing through the bath water circulation circuit is made to flow through the heat medium circulation circuit. There is a risk of heating with a high-temperature heat medium, but when the heat medium temperature detected by the heat medium temperature detector is equal to or lower than the set start temperature, the heat medium that flows through the heat medium circulation circuit Is allowed to flow through the bath water heating unit, so that the bath water flowing through the bath water circulation circuit can be appropriately cooled by the low-temperature heat medium flowing through the heat medium circulation circuit.

In short, according to a further characteristic configuration of the bathing system of the present invention, the bathtub water flowing through the bathtub water circulation circuit can be appropriately cooled by the low temperature heat medium flowing through the heat medium circulation circuit.

A further characteristic configuration of the bathing system of the present invention is provided with a heat medium temperature detecting unit for detecting the temperature of the heat medium flowing through the heat medium circulation circuit.
When the heat medium temperature detected by the heat medium temperature detection unit is higher than the set start temperature in the bath water temperature drop control, the operation control unit stops the bath water circulation pump and the heat medium temperature. When the heat medium temperature detected by the detection unit is equal to or lower than the set start temperature, the bath water circulation pump is operated.

That is, in the bath water temperature drop control, when the heat medium temperature detected by the heat medium temperature detector that detects the temperature of the heat medium flowing through the heat medium circulation circuit is higher than the set start temperature, the heat medium circulation circuit The bath water circulation pump is stopped in order to prevent the bath water flowing through the bath water circulation circuit from being heated by the high temperature heat medium flowing through the bath water circulation circuit.

Then, when the heat medium temperature detected by the heat medium temperature detection unit is equal to or lower than the set start temperature, the bath water circulation pump is operated to flow the bath water circulation circuit by the low temperature heat medium flowing through the heat medium circulation circuit. Cool the bath water.

That is, when the heat medium heating burner is burning or immediately after the heat medium heating burner is burned when the bath water temperature drop control is started, the temperature of the heat medium flowing through the heat medium circulation circuit is high. At such a high temperature, when the bath water flowing through the bath water circulation circuit is flowed through the bath water heating unit, the bath water flowing through the bath water circulation circuit is heated by the high temperature flowing through the heat medium circulation circuit. There is a risk of heating with the medium, but when the heat medium temperature detected by the heat medium temperature detector is equal to or lower than the set start temperature, the heat medium circulation circuit is operated by operating the bath water circulation pump. The low-temperature heat medium flowing through the tub water circulation circuit can appropriately cool the tub water flowing through the tub water circulation circuit.

In short, according to a further characteristic configuration of the bathing system of the present invention, the bathtub water flowing through the bathtub water circulation circuit can be appropriately cooled by the low temperature heat medium flowing through the heat medium circulation circuit.

A further characteristic configuration of the bathing system of the present invention is characterized in that when the operation control unit detects the abnormal state, it activates an external notification unit that notifies the abnormal state to the outside of the bathroom.

That is, when the abnormality detecting unit that detects that the bather bathing in the bathtub is in an abnormal state that can become abnormal detects the abnormal state, the external notification unit notifies the outside of the bathroom of the abnormal state.

Therefore, when a bather bathing in a bathtub becomes an abnormal state that can be abnormal, the external notification unit notifies others such as a cohabitant in the kitchen or living room that the abnormal state is present. It is possible to promptly take measures to protect the bather by another person who knows that the condition is abnormal, and the safety of the bather can be further improved.

In short, according to the further characteristic configuration of the bathing system of the present invention, the safety of the bather can be further improved.

A further characteristic configuration of the bathing system of the present invention is that a voice notification unit is provided in the bathroom.
When the operation control unit detects the abnormal state, the voice notification unit is activated.

That is, when the abnormality detecting unit detects the abnormal state, the voice notification unit provided in the bathroom can be activated to make the bather recognize the abnormal state.

Therefore, when the bather who bathes in the bathtub becomes abnormal, the voice notification unit provided in the bathroom operates to wake up the bather who has lost consciousness, and to be careful of the bather who bathes in the bathtub. It becomes possible to arouse, and the safety of bathers can be further improved.

In short, according to the further characteristic configuration of the bathing system of the present invention, the safety of the bather can be further improved.

It is a schematic diagram which shows the whole structure of a bathing system. It is a flowchart of bathtub water temperature lowering process. It is a schematic diagram which shows the whole structure of the bathing system of another embodiment. It is a flowchart of the bathtub water temperature lowering process of another embodiment.

[Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Overall configuration of heat source equipment)
As shown in FIG. 1, the heat source equipment (an example of a bathing system) is a heat source machine G, an operation control unit C that controls the operation of the heat source machine G, and a main that commands various control commands to the operation control unit C. It is equipped with a remote controller R1 and a bathroom remote controller R2.
Then, the heat source machine G circulates and supplies hot water to the tub 1 and the hot water tap 2 and heat medium for heating to the heat consuming terminal 3 such as the floor heating panel and the bathroom heater / dryer. , And, it is configured to perform a reheating process for reheating the bath water of the bath 1.

That is, the operation control unit C controls the operation of the heat source machine G based on the commands of the main remote controller R1 and the bathroom remote controller R2 to execute the hot water supply process, the heat medium supply process, and the reheating process. It is configured.
Incidentally, the main remote controller R1 is provided near the kitchen or the like, and the bathroom remote controller R2 is provided on the wall surface or the like adjacent to the bathtub 1 inside the bathroom Y where the bathtub 1 is installed.

As shown in FIG. 1, the heat source machine G heats water from a water supply channel 4 connected to a water pipe for general households, and supplies the heated hot water to the hot water supply plug 2 and the bathtub 1 for hot water supply heating. A unit A and a heating unit B for a heat medium that heats the heat medium that is circulated and supplied to the heat consuming terminal 3 are provided.

A hot water supply passage 5 for supplying the hot water water heated by the hot water supply heating unit A to the hot water supply plug 2 is provided, and the hot water supply passage 6 for supplying the hot water flowing through the hot water supply passage 5 to the bathtub 1 is the hot water supply passage 5. It is provided in a state of branching from.
Further, a heat medium circulation circuit J for circulating the heat medium between the heat medium heating unit B and the heat consumption terminal 3 and a heat medium circulation pump 7 for circulating the heat medium through the heat medium circulation circuit J are provided. ing.

(Structure of heating part for hot water supply and heating part for heat medium)
The hot water supply heating unit A includes a hot water supply heat exchanger 8 to which a water supply channel 4 is connected to the inlet side and a hot water supply channel 5 to the outlet side, a hot water supply burner 9 for heating the hot water supply heat exchanger 8, and a hot water supply burner 9. The hot water supply burner 9 is provided with a hot water supply blower fan 10 for supplying combustion air, and is configured to heat the hot water flowing through the hot water supply heat exchanger 8 with the combustion gas of the hot water supply burner 9.

The heat medium heating unit B is a heat medium heating heat exchanger 13 in which the return path 11 of the heat medium circulation circuit J is connected to the inlet side and the outward path 12 of the heat medium circulation circuit J is connected to the outlet side. The heat medium heating burner 14 for heating the heat medium heating heat exchanger 13 and the heat medium heating blower fan 15 for supplying combustion air to the heat medium heating burner 14 are provided, and the heat medium heating heat exchanger 13 is provided. The heat medium flowing through the heat medium is configured to be heated by the combustion gas of the heat medium heating burner 14.

A hot water supply side gas supply path 16 for supplying fuel gas such as city gas is connected to the hot water supply burner 9 equipped in the hot water supply heating unit A, and the heat medium heating burner 14 installed in the heat medium heating unit B is connected to the hot water supply side gas supply path 16. Is connected to a gas supply path 17 on the heat medium side that supplies fuel gas such as city gas.
The hot water supply side gas supply path 16 and the heat medium side gas supply path 17 are provided with an electromagnetic gas proportional valve 18 for adjusting the fuel gas supply amount and an intermittent valve 19 for interrupting the fuel gas supply.
Although not shown, an igniter for ignition and a frame rod for detecting ignition will be provided near the hot water supply burner 9 and the heat medium heating burner 14.

(Configuration for general hot water supply)
The water supply channel 4 is provided with a water supply thermistor 20 for detecting the water supply temperature and a water amount sensor 21 for detecting the amount of water supply. A water supply bypass path 22 that bypasses the exchanger 8 is connected to the hot water supply path 5.

At the connection point between the hot water supply passage 5 and the water supply bypass passage 22, a mixing valve 23 for adjusting the mixing ratio of the amount of hot water from the hot water supply heat exchanger 8 and the amount of water from the water supply bypass passage 22 is provided, and the hot water supply passage 5 is provided with a mixing valve 23. A hot water thermista 24 for detecting the temperature of hot water sent from the hot water supply heat exchanger 8 is provided on the upstream side of the connection point of the water supply bypass path 22, and is located on the upstream side of the connection point of the water supply bypass path 22 in the hot water supply path 5. On the downstream side, in order from the upstream side, a hot water supply thermista 25 that detects the temperature of hot water after being mixed by the mixing valve 23, a water proportional valve 26 that adjusts the amount of hot water, and an interrupt detection that detects interruptions in general hot water supply. A water heater 27 is provided.

(Structure for heat medium circulation)
An expansion tank 28 is interposed in the return path 11 of the heat medium circulation circuit J, and the above-mentioned heat medium circulation pump 7 is provided at a position downstream of the expansion tank 28 in the return path 11 to hot water in the expansion tank 28. Is provided in a form of sucking and sending the heat medium to the heat exchanger 13 for heating the heat medium.

In the outward path 12 of the heat medium circulation circuit J, a heat medium thermista 29 (an example of a heat medium temperature detection unit) for detecting the temperature of the heat medium after being heated by the heat medium heating heat exchanger 13 and a heat medium temperature detecting unit are provided. A terminal thermal valve 30 is provided to interrupt and interrupt the supply of the heat medium to the heat consuming terminal 3.
Further, the circulation bypass path 31 for circulating the heat medium by bypassing the heat consuming terminal 3 between the location on the downstream side of the heat medium thermistor 29 in the outward path 12 and the location on the upstream side of the expansion tank 28 in the return path 11. It is connected by.

(Configuration for reheating)
A reheating path 32 is provided to connect a portion downstream of the connection point of the circulation bypass path 31 in the outward path 12 and a location upstream of the connection location of the circulation bypass path 31 in the return path 11, and the reheating path 32 is provided. Is provided with a reheating heat exchanger 33 for reheating the bathtub water in the bathtub 1 and a reheating heat valve 34.
By the way, the reheating heat valve 34 has a bypass state and liquid heat in which the heat medium flowing through the heat medium circulation circuit J is made to flow by bypassing the reheating heat exchanger 33 constituting the bath water heating unit D. It functions as a switching unit for switching to a non-bypass state in which flow is performed via the exchanger 33.

The bathtub water circulation circuit K in which the bathtub water circulates inside the bathtub 1 is provided in a state of being connected to the circulation adapter H provided on the lower side of the side wall portion of the bathtub 1 and connected to the reheating heat exchanger 33. There is.
That is, the bathtub water return path 35 in the bathtub water circulation circuit K is provided in a state of connecting the circulation adapter H and the reheating heat exchanger 33, and the bathtub water outbound path 36 in the bathtub water circulation circuit K is the reheating heat. A bathtub water circulation pump 37 for circulating bathtub water through the bathtub water circulation circuit K is provided in a state where the exchanger 33 and the circulation adapter H are connected to each other, and the bathtub water return path 35 is provided.

Incidentally, the reheating heat exchanger 33 is a liquid heat exchanger that exchanges heat between the bath water flowing through the bath water circulation circuit K and the heat medium flowing through the heat medium circulation circuit J, and is also a bath water circulation circuit K. Corresponds to the bath water heating unit D that heats the flowing bath water.

Therefore, by operating the heat medium circulation pump 7 with the terminal heat valve 30 closed and the reheating heat valve 34 open, the heat exchanger 13 was heated. The heat medium is circulated and supplied to the reheating heat exchanger 33 in a state of bypassing the heat consuming terminal 3.
Then, in that state, by operating the bathtub water circulation pump 37, the bathtub water stored inside the bathtub 1 is circulated and supplied to the reheating heat exchanger 33 through the bathtub water return path 35 and the bathtub water outbound path 36. By doing so, the bathtub water in the bathtub 1 can be reheated.

The bathtub water return path 35 has a bathtub water temperature detection sensor 38 that detects the temperature of the bathtub water returning from the bathtub 1 in order from the upstream side, and a bathtub by detecting the pressure of the hot water inside the bathtub water return path 35. A water level sensor 39 for detecting the internal water level, a water flow switch 40, and the above-mentioned bathtub water circulation pump 37 are provided.
Further, the bathtub water outward passage 36 is provided with a bathtub forward temperature detection sensor 47 that detects the temperature of the bathtub water heated by the reheating heat exchanger 33.

(Structure for hot water filling)
A hot water supply path 6 for supplying hot water from the hot water supply path 5 to the bathtub 1 is branched from a location between the water supply bypass path 22 and the interrupt detection water amount sensor 27 in the hot water supply path 5, and the hot water supply path 6 is branched. , In the bathtub water return path 35, is connected to a corresponding portion between the bathtub water circulation pump 37 and the reheating heat exchanger 33.
The Yubari path 6 is provided with a Yubari solenoid valve 42 for opening and closing the Yubari path 6 and a Yuhari check valve 43 in order from the upstream side.

Further, an air layer forming hopper 44 communicating with the Yubari passage 6 is interposed between the Yuhari solenoid valve 42 and the Yuhari check valve 43 in the Yuhari passage 6.
The air layer forming hopper 44 is provided with a drainage channel 45 for draining hot water and an electromagnetic drainage valve 46 for opening and closing the drainage channel 45, and the end of the drainage channel 45 is a bathtub water return path 35. It is connected to a location between the bathtub water circulation pump 37 and the water flow switch 40.
Since the configuration and the function of the air layer forming hopper 44 are well known, detailed description thereof will be omitted in the present embodiment.

Therefore, when the hot water supply solenoid valve 42 is opened, the hot water that is heated by the hot water supply heating unit A and then supplied through the hot water supply path 6 is supplied to the bathtub water return path 35 and supplied to the bathtub water return path 35. The hot water is diverted toward both the existing side of the bathtub 1 and the existing side of the reheating heat exchanger 33. That is, the hot water supplied through the Yubari passage 6 is supplied to the bathtub 1 through the bathtub water outbound passage 36 and the bathtub water return passage 35.

(Operation control of heat source machine)
The heat source machine G is equipped with the above-mentioned equipment, and as is clear from the above description, as the hot water supply treatment, the general hot water supply treatment for supplying the heated hot water to the hot water tap 2 and the heated hot water for the bathtub 1 It is configured to execute a hot water filling process for supplying water to the bathtub, a heat medium supply process for circulating and supplying the heated heat medium to the heat consuming terminal 3, and a reheating process for reheating the bathtub water of the bathtub 1. Has been done.

That is, the operation control unit C operates the equipment equipped with the heat source machine G based on the command information of the main remote controller R1 and the bathroom remote controller R2 and the detection information of the sensors equipped with the heat source machine G, and is generally used. General hot water supply operation corresponding to hot water supply processing, automatic hot water filling operation and additional hot water operation corresponding to hot water filling processing, keep operation performed following automatic hot water filling operation, terminal heating operation corresponding to heat medium supply processing, and reheating It is configured to perform a reheating operation corresponding to the processing.

By the way, the main remote controller R1 and the bathroom remote controller R2 are configured in the same manner, and although not shown, an operation switch for instructing the start and stop of operation, an automatic bathtub switch for instructing an automatic bathtub operation command, and a general one. Hot water supply temperature setting switch to set hot water supply temperature, bathtub temperature setting switch to set target hot water filling temperature, water level setting switch to set target water level as setting water level in bathtub, additional to bathtub 1 Addition hot water switch to instruct the addition hot water operation command to supply hot water, reheating switch to instruct the reheating operation command, display unit to display various information such as set temperature, terminal operation switch to instruct the start of terminal heating operation, In addition, a notification device for notifying that the hot water filling has been completed is provided.

(Overview of operation control)
The operation control unit C is in a controllable state when the operation switch is operated, and when the hot water tap 2 is opened, the operation control unit C executes a general hot water supply operation of supplying hot water from the hot water tap 2.
Further, when the automatic bath switch is turned on and the automatic hot water filling operation command is commanded, the operation control unit C automatically supplies hot water into the bathtub 1 and completes hot water filling at the target hot water level at the target hot water filling temperature. It is configured to perform a hot water filling operation.
That is, when the hot water filling operation command is commanded, the operation control unit C fills the bathtub 1 so that the temperature of the bathtub water becomes the target hot water filling temperature and the water level of the bathtub water of the bathtub 1 becomes the target water level. It is configured to perform automatic hot water filling operation.

Further, after the automatic hot water filling operation is completed, the operation control unit C is instructed to, in other words, an automatic hot water filling operation command until the on-operated bath automatic switch is turned off. During the period, assuming that the keep operation is in progress, the bathtub water in the bathtub 1 becomes the target hot water filling temperature and the water level in the bathtub becomes the target water level every set keep operation cycle (for example, 10 minutes). It is configured to perform a keep operation of reheating the bathtub water and additionally supplying the bathtub water to the bathtub 1.

Further, in the operation control unit C, during the keep operation, when the reheating switch is operated and the reheating operation command is commanded, or when the automatic bath switch is turned off, the automatic hot water filling operation command is canceled and the keep operation is performed. When the reheating switch is operated and the reheating operation command is commanded in the state where is stopped, the reheating operation is executed, and the addition is performed during the keep operation or in the state where the keep operation is stopped. When the hot water switch commands the hot water operation command, the hot water operation is executed.

Hereinafter, each operation of general hot water supply operation, automatic hot water filling operation, keep operation, and reheating operation will be described.
Incidentally, the operation control unit C executes the bathtub water temperature decrease control in addition to these operations, and the bathtub water temperature decrease control will be described later.

(General hot water supply operation)
The operation control unit C executes a general hot water supply operation when the hot water supply tap 2 is opened and the amount of water detected by the water amount sensor 21 exceeds a predetermined amount.
In the general hot water supply operation, after driving the hot water supply blower fan 10 in the hot water supply heating unit A, the intermittent valve 19 is opened, the hot water supply burner 9 is ignited by the igniter, and the general hot water supply temperature and water volume sensor by the hot water supply temperature setting switch. Based on the detected water amount of 21, the detected water temperature of the water supply thermista 20, the detected temperature of the hot water supply thermista 24, and the detected temperature of the hot water supply thermista 25, the detected temperature of the hot water supply thermista 25 becomes the general hot water supply temperature set by the hot water supply temperature setting switch. As described above, the process of adjusting the opening degree of the gas proportional valve 18 and the opening degree of the mixing valve 23 is executed.
When the water flow sensor 21 no longer detects water flow, the intermittent valve 19 is closed to stop the combustion of the hot water supply burner 9, the hot water supply blower fan 10 is stopped, and the general hot water supply operation is terminated. Become.

(Terminal heating operation)
When the operation control unit C is instructed to start the terminal heating operation by the terminal operation switch, the operation control unit C executes the terminal heating operation.
In the terminal heating operation, the heat medium circulation pump 7 is operated with the terminal heat valve 30 opened and the reheating heat valve 34 closed, and the heat medium is circulated through the heat medium circulation circuit J. At the same time, after driving the heat medium blower fan 15 in the heat medium heating unit B, the intermittent valve 19 is opened and the heat medium heating burner 14 is ignited by the igniter to detect the temperature of the heat medium thermista 29. Is executed to adjust the opening degree of the gas proportional valve 18 so that the temperature reaches the target circulation temperature (for example, 70 ° C.).

(Determination process)
When the operation control unit C executes the automatic hot water filling operation, the keep operation, and the addition hot water operation, the operation control unit C executes the following determination process to obtain the on / off information of the water flow switch 40 and the detected water level of the water level sensor 39. Based on this, the water level in the bathtub is detected, and the temperature of the bathtub water in the bathtub 1 is detected based on the on / off information of the water flow switch 40 and the detection temperature of the bathtub water temperature detection sensor 38.

That is, in the determination process, the bathtub water circulation pump 37 is operated with the drain valve 46 closed for the set time for circulation determination, and the water flow switch 40 and the bathtub water temperature are operated while the bathtub water circulation pump 37 is operating. The detection information of the detection sensor 38 is read, the presence or absence of the bathtub water is confirmed, and the temperature of the bathtub water is detected when the bathtub water is present.
Further, on condition that the water flow switch 40 detects the water flow, after the bathtub water circulation pump 37 is stopped and the standby set time elapses, the detection information of the water level sensor 39 is read to detect the water level in the bathtub. It is configured in.

(Automatic hot water filling operation)
The operation control unit C is configured to execute the automatic hot water filling operation when the water level of the hot water in the bathtub 1 determined by the determination process is lower than the target water level when the automatic bath switch is turned on. ..
In the automatic hot water filling operation, the hot water pouring process in which hot water is supplied to the bathtub 1 for the set time for pouring and the above-mentioned determination process are alternately executed until the detected water level of the water level sensor 39 becomes equal to or higher than the target water level. When the detected water level of the water level sensor 39 becomes equal to or higher than the target water level, the automatic hot water filling operation is terminated after performing a reheating process for reheating so that the temperature of the bathtub water reaches the target hot water filling temperature.

In the hot water pouring process in the automatic hot water filling operation, the operation control unit C opens the hot water filling electromagnetic valve 42, ignites the hot water supply burner 9 in the same manner as the above-mentioned general hot water supply operation, and presses the bath temperature setting switch. The detection temperature of the hot water supply thermistor 25 is the target hot water filling temperature based on the set target hot water filling temperature, the detected water amount of the water volume sensor 21, the detected water temperature of the water supply thermistor 20, the detection temperature of the hot water supply thermistor 24, and the detection temperature of the hot water supply thermistor 25. The opening degree of the gas proportional valve 18 and the opening degree of the mixing valve 23 are adjusted so as to be, and when the set time for pouring elapses, the hot water filling electromagnetic valve 42 is closed and the hot water supply burner 9 is used. It is configured to stop burning.

Further, in the reheating process, the operation control unit C operates the heat medium circulation pump 7 and the bath water circulation pump 37 in a state where the terminal thermal valve 30 is closed and the thermal valve 34 for reheating is opened. Then, the hot water in the tub 1 is circulated through the tub water return path 35 and the tub water outbound path 36, and at the same time, the heat medium blower fan 15 in the heat medium heating section B is driven, and then the intermittent valve 19 is opened. The heat medium heating burner 14 is ignited by the igniter, and the gas proportional valve 18 is further set so that the detection temperature of the bath forward temperature detection sensor 47 becomes the set hot water temperature for reheating (for example, 60 ° C.). The opening will be adjusted.

Then, when the detection temperature of the bath water temperature detection sensor 38 becomes equal to or higher than the target hot water filling temperature, the intermittent valve 19 is closed to stop the combustion of the heat medium heating burner 14, and the heat medium blower fan 15 is stopped to follow up. Finish the burning process.

If the detection temperature of the bath water temperature detection sensor 38 is equal to or higher than the target hot water filling temperature when the hot water pouring process of the automatic hot water filling operation is completed, the operation control unit C operates the notification device at that point to automatically operate the hot water. If the end of tensioning is notified and the detection temperature of the bath water temperature detection sensor 38 is lower than the target hot water filling temperature when the automatic hot water filling operation is finished and the reheating process is executed, the reheating process is completed. At that point, the notification device is activated to notify the end of the automatic hot water filling operation.

(Keep operation)
The operation control unit C executes a determination process every time the keep operation cycle elapses during the keep operation while the bath automatic switch is on after the automatic hot water filling operation is completed, and the bathtub. The temperature of the hot water of 1 and the water level of the hot water of the bathtub 1 are detected.

When the water level of the hot water in the tub 1 is lower than the target water level as a result of executing the determination process, the water level sensor 39 detects the process of executing the pouring process and the determination process in order regardless of the temperature of the hot water in the tub 1. Repeat until the water level rises above the target water level, and when the detected water level rises above the target water level, if the detection temperature of the bath water temperature detection sensor 38 is lower than the target hot water filling temperature, the bath water temperature detection sensor 38 detects it. The reheating process is executed until the temperature reaches the target Yubari temperature or higher.

As a result of executing the determination process, when the water level of the hot water in the bathtub 1 is higher than the target water level and the temperature of the hot water in the bathtub 1 is lower than the target hot water filling temperature, the detection temperature of the bathtub water temperature detection sensor 38 is the target hot water filling temperature. The reheating process is executed until the above is reached.
Incidentally, as a result of executing the determination process, when the water level of the hot water in the bathtub 1 is equal to or higher than the target water level and the temperature of the hot water in the bathtub 1 is equal to or higher than the target hot water filling temperature, of course, no special process is executed.

(Reheating operation)
When the reheating switch is operated, the operation control unit C operates the bathtub water circulation pump 37 with the drain valve 46 closed, and after that, when the set elapsed time (for example, 10 seconds) elapses, the bathtub water temperature is detected. Read the detected temperature of the sensor 38.

When the detection temperature of the bath water temperature detection sensor 38 is lower than the target hot water filling temperature, the terminal thermal valve 30 is closed and the thermal valve 34 for reheating is opened in the same manner as in the above-mentioned reheating process. In this state, the heat medium circulation pump 7 and the tub water circulation pump 37 are operated to circulate the hot water in the tub 1 through the tub water return path 35 and the tub water outbound path 36, and at the same time, in the heat medium heating section B. After driving the heat medium blower fan 15, the intermittent valve 19 is opened and the heat medium heating burner 14 is ignited by the igniter, and the detection temperature of the bath forward temperature detection sensor 47 is set for reheating. The opening degree of the gas proportional valve 18 is adjusted so that the hot water temperature (for example, 60 ° C.) is reached, and the bath water is heated.

Then, when the detection temperature of the bathtub water temperature detection sensor 38 becomes equal to or higher than the target hot water filling temperature, the bathtub water is continuously heated for a set additional time (for example, 30 seconds) from that point, and then the intermittent valve 19 is closed. The combustion of the heat medium heating burner 14 is stopped, and the heat medium blower fan 15 is stopped to end the reheating operation.

(Additional hot water operation)
When the footbath switch is operated and the footbath operation command is commanded, the operation control unit C executes the above-mentioned determination process, and in the determination process, the water level of the hot water in the bathtub 1 is lower than the target water level. If it is determined, the hot water operation will be executed.
In the addition hot water operation, the process of alternately executing the hot water pouring process and the determination process is configured to repeat until the detected water level of the water level sensor 39 becomes equal to or higher than the target water level.

(Bathtub water temperature drop control)
An abnormality detection unit Q is provided to detect that the bather bathing in the bathtub is in an abnormal state that can become abnormal, and when the operation control unit C detects the abnormal state in the abnormality detection unit Q, the bathtub water is heated. It is configured to execute the bathtub water temperature lowering control (bathtub water temperature lowering treatment) for operating the bathtub water circulation pump 37 in a state where the heating operation of the reheating heat exchanger 33 as the part D is stopped.

That is, the bathtub water temperature drop control (bathtub water temperature drop process) is executed until the setting confirmation time (for example, 3 hours) elapses during the keep operation or after the keep operation is stopped. Has been done.
Further, as described later, the reheating heat exchanger 33 as the bathtub water heating unit D is in a state where the heating operation is stopped by keeping the heat medium heating burner 14 in the combustion stopped state.

In the present embodiment, a human sensor 48 for detecting a bather bathing in the bathtub 1 is provided in the bathroom remote control R2, and the operation control unit C is in a state where the bather is detected by the human sensor 48. Based on the bathing time corresponding to the duration and the target hot water filling temperature (bathtub water temperature), it is configured to determine that the bather bathing in the bathtub 1 is in an abnormal state that can be abnormal.

Specifically, for example, when the bathtub water temperature (target hot water filling temperature) is 41 ° C. and the bathing time for the bather to bathe in the bathtub 1 is 10 minutes or more as the allowable time, or when the bathtub water temperature is 40. Bathtub water, such as determining that the bather bathing in bathtub 1 is in an abnormal state when the bathing time for the bather to bathe in bathtub 1 becomes 15 minutes or more as an allowable time at ° C. It is configured to determine whether it is in an abnormal state based on the temperature (hot water filling temperature) and the permissible time for the bathing time set in relation to the temperature.

Further, in the present embodiment, regardless of the bathtub water temperature, it is configured to determine that the bather is in an abnormal state when the bathing time for the bather to bathe in the bathtub 1 elapses from the upper limit time (for example, 20 minutes). Has been done.
Incidentally, in the present embodiment, the abnormality detection unit Q is configured with the operation control unit C and the motion sensor 48 as the main units.

In the present embodiment, the bathtub water circulation pump 37 causes the operation control unit C to make the amount of circulation of bathtub water through the bathtub water circulation circuit K larger than that of the reheating operation control (reheating operation) in the bathtub water temperature drop control. Is configured to operate.

In the present embodiment, the operation control unit C operates the heat medium circulation pump 7 in order to stop the heating operation of the reheating heat exchanger 33 as the tub water heating unit D in the tub water temperature drop control. In this state, the heat medium heating burner 14 is maintained in the combustion stopped state.
Specifically, the heat medium circulation pump 7 is operated with the terminal heat valve 30 closed and the reheating heat valve 34 opened, and the heat medium heating burner 14 is put into a combustion stop state. It will be maintained and the heating operation of the reheating heat exchanger 33 will be stopped.
By the way, by closing the thermal valve 30 for the terminal, it is suppressed that the low temperature heat medium is circulated and supplied to the heat consuming terminal 3.

Further, in the present embodiment, in the control of lowering the temperature of the bath water, the heat medium blower fan 15 is operated in a state where the amount of air supplied by the heat medium blower fan 15 is larger than that of the reheating operation (reheating operation control). In addition, in the bath water temperature drop control, the heat medium circulation pump 7 is operated so that the circulation amount of the heat medium through the heat medium circulation circuit J is larger than that in the reheating operation (reheating operation control). It is configured as follows.

Further, in the present embodiment, the operation control unit C reheats when the heat medium temperature detected by the heat medium thermista 29 is higher than the set start temperature (for example, 35 ° C.) in the bath water temperature drop control. When the heat transfer valve 34 is closed and the heat medium temperature detected by the heat medium thermista 29 is equal to or lower than the set start temperature, the reheating heat valve 34 is opened and the reheating heat exchanger 33 is used. It is configured to prevent the bath water from being unnecessarily heated.
Incidentally, in a state where the terminal thermal valve 30 and the reheating thermal valve 34 are closed, the heat medium is circulated through the circulation bypass path 31.

Then, after the bath water circulation pump 37 is operated, when the detection temperature detected by the bath water temperature detection sensor 38 becomes the stop temperature (for example, 37 ° C.) or less, the bath water circulation pump 37, the heat medium circulation pump 7, and heat The medium blower fan 15 is stopped, and the bath water temperature drop control is terminated.

(Notification of abnormal condition)
The main remote controller R1 is provided with an external notification unit 50 for notifying the outside of the bathroom Y of an abnormal state.
Then, when the operation control unit C detects an abnormal state, the external notification unit 50 is configured to operate the external notification unit 50 in order to notify the abnormal state to the outside of the bathroom Y.
Incidentally, the external notification unit 50 may be configured to emit an alarm sound, but it is preferable to configure it in a voice notification type. In such a configuration, for example, "the bather is abnormal. The information that informs the bather that the bather is abnormal, such as "is," will be notified to the outside as a voice.

Further, a voice notification unit 49 is provided in the bathroom Y. In the present embodiment, the voice notification unit 49 is attached to the bathroom remote controller R2.
Then, when the operation control unit C detects an abnormal state, the voice notification unit 49 is configured to operate.
For example, information such as "bathing time is too long" or "dangerous bathing" is notified to the bather as a voice.

(Details of bathtub water temperature lowering treatment)
Next, the control operation of the operation control unit C in the bathtub water temperature drop control (bathtub water temperature drop process) will be described based on the flowchart of FIG.
First, it is determined whether or not the bather bathing in the bathtub 1 is in an abnormal state that can become abnormal (# 1), and if it is not in an abnormal state, the patient waits until the abnormal state is detected.

If it is determined in # 1 that the state is abnormal, it is determined whether or not the heat medium heating burner 14 is burning (# 2), and if it is burning, the combustion stop processing of the heat medium heating burner 14 (# 2) is performed. Execute # 3).

When it is determined in # 2 that combustion is not in progress or after the combustion stop process (# 3) is executed, the process of closing the terminal thermal valve 30 is executed (# 4), and then the heat medium blower fan is executed. In order to increase the amount of air supplied by 15 more than the reheating operation control (reheating operation), the heat medium blower fan 15 is driven at high speed (# 5), and the amount of heat medium circulation through the heat medium circulation circuit J. The heat medium circulation pump 7 is driven at high speed (# 6) in order to increase the number of heat medium circulation pumps 7 to more than the reheating operation control (reheating operation).
Subsequently, the reheating thermal valve 7 is closed (# 7), and the bathtub water circulation pump 37 is driven at high speed (# 8).

After that, it is determined whether or not the heat medium temperature detected by the heat medium thermista 29 is below the set start temperature (# 9), and if the heat medium temperature is not below the set start temperature, the heat medium temperature is set. Wait until the temperature drops below the starting temperature.
When it is determined in # 9 that the heat medium temperature is equal to or lower than the set start temperature, the heat medium flowing through the heat medium circulation circuit J is used for reheating to cool the bath water flowing through the bath water circulation circuit K. Open the thermal valve 7 (# 10).

After that, it is determined whether or not the bathtub water temperature detected by the bathtub water temperature detection sensor 38 is below the stop temperature (# 11), and if the bathtub water temperature is not below the stop temperature, the bathtub water temperature is stopped. Wait until the temperature drops below the temperature.
When it is determined in # 11 that the bathtub water temperature is equal to or lower than the stop temperature, a stop process for stopping the bathtub water circulation pump 37, the heat medium circulation pump 7, and the heat medium blower fan 15 is executed (# 12).

Although the description is omitted in the flowchart shown in FIG. 2, when it is determined in # 1 that the abnormal state is present, the external notification unit 50 is operated to notify the abnormal state to the outside of the bathroom Y, and the bather is notified of the abnormal state. The voice notification unit 49 is activated to notify that the abnormality is occurring.

[Another Embodiment]
Next, another embodiment will be described. In this other embodiment, the heat medium heating unit B and the heat medium circulation circuit J in the above embodiment are omitted, and the reheating heat exchanger 51 (burner heating type heat exchanger) is omitted. (One example) is different from the above embodiment in that it is provided as a bath water heating unit D for reheating, and other configurations are the same as those of the above embodiment, so that it is the same as the above embodiment. The above-mentioned configurations are designated by the same reference numerals as those in the above-described embodiment, and detailed description thereof will be omitted.

That is, as shown in FIG. 3, the bathtub water return path 35 and the bathtub water outbound path 36 in the bathtub water circulation circuit K are connected to the reheating heat exchanger 51.
Further, a reheating burner 52 (an example of a bath water heating burner) that heats the reheating heat exchanger 51 with combustion gas, and a reheating blower fan 53 (of a bath water blower fan) that supplies combustion air. An example) is provided.

Then, the operation control unit C performs each operation of general hot water supply operation, automatic hot water filling operation, keep operation, and reheating operation, and bathtub water temperature decrease control (bathtub water temperature decrease process), as in the above embodiment. However, the terminal heating operation will not be performed.

In the reheating operation (reheating operation control), the operation control unit C burns and operates the reheating burner 52 in a state where the bathtub water blower fan that supplies combustion air to the reheating burner 52 is operated. In the bathtub water temperature lowering control (bathtub water temperature lowering treatment), the reheating burner 52 is configured to maintain the combustion stopped state in a state where the reheating blower fan 53 is operated.

Further, in the present embodiment, the operation control unit C adds the air supply amount by the reheating blower fan 53 to be larger than the reheating operation control in the bathtub water temperature lowering control (bathtub water temperature lowering process). It is configured to operate the heating blower fan 53.

Further, in the present embodiment, the operation control unit C makes the bathtub water circulation amount through the bathtub water circulation circuit K larger than that in the reheating operation control (reheating operation) in the bathtub water temperature drop control. It is configured to operate the water circulation pump 37.

Then, after the bathtub water circulation pump 37 is operated, when the detection temperature detected by the bathtub water temperature detection sensor 38 becomes the stop temperature (for example, 37 ° C.) or less, the bathtub water circulation pump 37 and the reheating blower fan 53 are turned on. It will be stopped and the bathtub water temperature drop control will be terminated.

(Details of bathtub water temperature lowering treatment)
Next, the control operation of the operation control unit C in the bathtub water temperature drop control (bathtub water temperature drop process) will be described based on the flowchart of FIG.
First, it is determined whether or not the bather bathing in the bathtub 1 is in an abnormal state that can become abnormal (# 21), and if it is not in an abnormal state, the patient waits until the abnormal state is detected.

When it is determined in # 21 that the state is abnormal, it is determined whether or not the reheating burner 52 is burning (# 22), and if it is burning, the combustion stop processing of the reheating burner 52 is performed. Execute (# 23).

When it is determined in # 22 that combustion is not in progress, or after the combustion stop processing (# 23) of the reheating burner 52 is executed, the air supply amount by the reheating blower fan 53 is controlled by the reheating operation (reheating operation). ), The reheating blower fan 53 is driven at high speed (# 24), and the amount of circulation of bathtub water through the bathtub water circulation circuit K is larger than that of the reheating operation control (reheating operation). In addition, the bathtub water circulation pump 37 is driven at high speed (# 25).

After that, it is determined whether or not the bathtub water temperature detected by the bathtub water temperature detection sensor 38 is below the stop temperature (# 26), and if the bathtub water temperature is not below the stop temperature, the bathtub water temperature is stopped. Wait until the temperature drops below the temperature.
When it is determined in # 6 that the bathtub water temperature is equal to or lower than the stop temperature, a stop process for stopping the bathtub water circulation pump 37 and the reheating blower fan 53 is executed (# 27).

Although the description is omitted in the flowchart shown in FIG. 4, when it is determined in # 21 that the abnormal state is present, the external notification unit 50 is operated to notify the abnormal state to the outside of the bathroom Y, and the bather is notified of the abnormal state. The voice notification unit 49 is activated to notify that the abnormality is occurring.

[Other Other Embodiments]
Next, another embodiment will be described.
(1) In the above embodiment and another embodiment, the operation control unit C determines the circulation amount of the bathtub water through the bathtub water circulation circuit K in the bathtub water temperature drop control rather than the reheating operation control (reheating operation). The case where the bathtub water circulation pump 37 is operated so as to increase the number is illustrated, but in the bathtub water temperature drop control, the circulation amount of the bathtub water through the bathtub water circulation circuit K is the same as the reheating operation control (reheating operation). As described above, the bathtub water circulation pump 37 may be operated.

(2) In the above embodiment, in the bath water temperature drop control, the heat medium blower fan 15 is operated in a state where the amount of air supplied by the heat medium blower fan 15 is larger than that of the reheating operation control (reheating operation). Although the case of operating is illustrated, the heat medium blower fan 15 is operated so that the air supply amount by the heat medium blower fan 15 is the same as the reheating operation control (reheating operation) in the bath water temperature drop control. It may be carried out in a form, or may be carried out in a form in which the blower fan 15 for a heat medium is stopped in the control of lowering the temperature of the bath water.

(3) In the above embodiment, in the bath water temperature drop control, the heat medium circulation pump 7 so that the circulation amount of the heat medium through the heat medium circulation circuit J is larger than that of the reheating operation control (reheating operation). In the bath water temperature drop control, the heat medium circulation pump 7 is operated so that the circulation amount of the heat medium through the heat medium circulation circuit J is the same as that of the reheating operation control (reheating operation). May be carried out in the form of operating.

(4) In the above embodiment, a bypass state in which the heat medium flowing through the heat medium circulation circuit J is allowed to flow by bypassing the reheating heat exchanger 33 constituting the bath water heating unit D and the heating heat exchanger. Although the case of being configured to switch to the non-bypass state in which the heat is flowed via the 33 is illustrated, the heat medium flowing in the heat medium circulation circuit J is always flowed via the heat exchanger 33 for burning. It may be carried out at.

In this case, when the heat medium temperature detected by the heat medium thermista 29 is higher than the set start temperature (for example, 35 ° C.) in the operation control unit C in the bath water temperature drop control, the bath water circulation pump 37 Is stopped, and when the heat medium temperature detected by the heat medium thermista 29 is equal to or lower than the set start temperature, the bath water circulation pump 37 is configured to operate, and the heat exchanger for reheating as the bath water heating unit D is configured. At 33, it is possible to prevent the bath water from being unnecessarily heated.

(5) In the above separate embodiment, the embodiment in which the reheating heat exchanger 51 heated by the reheating burner 52 and the hot water supply heat exchanger 8 heated by the hot water supply burner 9 are separately provided is exemplified. Even if the reheating heat exchanger 51 and the hot water supply heat exchanger 8 are integrally formed as one fin tube type heat exchanger and heated by the combustion gas of a common heating burner. good.

(6) In the above embodiment and another embodiment, the hopper 44 for forming an air layer is provided in the hot water filling path 6, and when the hot water filling path 6 is not filled, the connection state between the hot water filling path 6 and the bathtub water circulation circuit K is opened to the atmosphere. Although the case of the state is illustrated, it may be carried out in the form of providing an air release valve instead of the air layer forming hopper 44.

(7) In the above embodiment and another embodiment, the human sensor 48 detects a bather bathing in the bathtub 1, but the water level sensor 39 detects an increase in the water level even though the water level sensor 39 does not fill the bathtub. By detecting the bather who bathes in the bathtub 1, the sensor that detects the weight of the bathtub 1 detects the increase in weight even though the bathtub is not filled with water, thereby detecting the bather who bathes in the bathtub 1. The configuration for detecting a bather bathing in the bathtub 1 can be changed in various ways.

The configuration disclosed in the above embodiment (including another embodiment, the same shall apply hereinafter) can be applied in combination with the configuration disclosed in other embodiments as long as there is no contradiction. The embodiments disclosed in the present specification are examples, and the embodiments of the present invention are not limited thereto, and can be appropriately modified without departing from the object of the present invention.

1 Bath 7 Heat medium circulation pump 13 Heat medium heating heat exchanger 14 Heat medium heating burner 15 Heat medium blower fan 29 Heat medium temperature detection unit 33 Liquid heat exchanger 34 Switching unit 37 Bath water circulation pump 49 Voice notification unit 50 External notification unit 51 Burner heating type heat exchanger 52 Bath water heating burner 53 Bath water blower fan C Operation control unit D Bath water heating unit J Heat medium circulation circuit K Bath water circulation circuit Q Abnormality detection unit Y Bathroom

Claims (13)

A bathtub water circulation circuit that circulates bathtub water in the bathtub, a bathtub water circulation pump that circulates bathtub water through the bathtub water circulation circuit, a bathtub water heating unit that heats bathtub water flowing in the bathtub water circulation circuit, and a reheating operation. A bathing system provided with an operation control unit that executes reheating operation control to operate the bathtub water circulation pump in a state where the bathtub water heating unit is heated and operated when a command is issued.
An abnormality detection unit is provided to detect that the bather bathing in the bathtub is in an abnormal state that can be abnormal.
When the abnormality detection unit detects the abnormality state, the operation control unit executes the bathtub water temperature drop control for operating the bathtub water circulation pump in a state where the heating operation of the bathtub water heating unit is stopped. Bathing system. The first aspect of claim 1, wherein the operation control unit operates the bathtub water circulation pump so that the circulation amount of the bathtub water through the bathtub water circulation circuit is larger than that of the reheating operation control in the bathtub water temperature drop control. Bathing system. The bathtub water heating unit is a burner heating type heat exchanger that is heated by the combustion gas of the bathtub water heating burner.
In the reheating operation control, the operation control unit burns and operates the bathtub water heating burner in a state where the bathtub water blower fan that supplies combustion air to the bathtub water heating burner is operated, and the bathtub water temperature. The bathing system according to claim 1 or 2, wherein the bathtub water heating burner is maintained in a combustion stopped state in the reduction control. The bathing system according to claim 3, wherein the operation control unit operates the bathtub water blower fan in the bathtub water temperature drop control. The fourth aspect of claim 4, wherein the operation control unit operates the bathtub water blower fan so that the amount of air supplied by the bathtub water blower fan is larger than that of the reheating operation control in the bathtub water temperature drop control. Bathing system. A heat medium circulation circuit in which a heat medium is circulated, a heat medium circulation pump that circulates the heat medium through the heat medium circulation circuit, and a heat medium heating heat exchanger that heats the heat medium flowing in the heat medium circulation circuit. A heat medium heating burner that heats the heat medium heating heat exchanger with combustion gas and a heat medium blowing fan that supplies combustion air to the heat medium heating burner are provided.
The bathtub water heating unit is a liquid heat exchanger that exchanges heat between the bathtub water flowing through the bathtub water circulation circuit and the heat medium flowing through the heat medium circulation circuit.
In the reheating operation control, the operation control unit burns and operates the heat medium heating burner in a state where the heat medium circulation pump and the heat medium blower fan are operated, and in the bath water temperature drop control, the operation is described. The bathing system according to claim 1 or 2, wherein the heat medium heating burner is maintained in a combustion stopped state while the heat medium circulation pump is operated. 6. The operation control unit operates the heat medium circulation pump so that the circulation amount of the heat medium through the heat medium circulation circuit is larger than that of the reheating operation control in the bathtub water temperature decrease control. The bathing system described in. The bathing system according to claim 6 or 7, wherein the operation control unit operates the blower fan for a heat medium in the bathtub water temperature drop control. The eighth aspect of the invention, wherein the operation control unit operates the heat medium blower fan so that the amount of air supplied by the heat medium blower fan is larger than that of the reheating operation control in the bathtub water temperature drop control. Bathing system. A switching unit that switches the heat medium flowing through the heat medium circulation circuit between a bypass state in which the heat medium flows by bypassing the bath water heating unit and a non-bypass state in which the heat medium flows through the bath water heating unit, and the heat. A heat medium temperature detector is provided to detect the temperature of the heat medium flowing through the medium circulation circuit.
When the heat medium temperature detected by the heat medium temperature detection unit is higher than the setting start temperature in the bath water temperature drop control, the operation control unit puts the switching unit in the bypass state and sets the heat medium. The bathing system according to any one of claims 6 to 9, wherein when the heat medium temperature detected by the temperature detection unit is equal to or lower than the set start temperature, the switching unit is placed in the non-bypass state. A heat medium temperature detection unit for detecting the temperature of the heat medium flowing through the heat medium circulation circuit is provided.
When the heat medium temperature detected by the heat medium temperature detection unit is higher than the set start temperature in the bath water temperature drop control, the operation control unit stops the bath water circulation pump and the heat medium temperature. The bathing system according to any one of claims 6 to 9, wherein when the heat medium temperature detected by the detection unit is equal to or lower than the set start temperature, the bath water circulation pump is operated. The bathing system according to any one of claims 1 to 11, wherein when the operation control unit detects the abnormal state, the external notification unit for notifying the abnormal state to the outside of the bathroom is activated. A voice notification unit is installed in the bathroom,
The bathing system according to any one of claims 1 to 12, wherein when the operation control unit detects the abnormal state, the voice notification unit is activated.

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