JP2021042867A - Water filling system - Google Patents

Abstract

To provide a water filling system capable of unfailingly securing daily life water.SOLUTION: In a bathroom 11 of a building 10, a bathtub 12 is provided. A water supply pipe 18 is connected to the bathtub 12, and to the water supply pipe 18, a hot water supply pipeline 21 and a water supply pipeline 22 are connected. In the middle of the hot water supply pipeline 21, a water heater 24 is provided, and in the middle of the water supply pipeline 22, a water supply valve 25 is provided. When hot water is supplied to the bathtub 12 through the hot water supply pipeline 21 and the water supply pipe 18 by the water heater 24, hot water filling is performed in the bathtub 12 by the supplied hot water. Also, when the water supply valve 25 is opened, water is supplied to the bathtub 12 through the water supply pipeline 22 and the water supply pipe 18, and water filling is performed in the bathtub 12 by the supplied water. A controller determines whether or not the hot water is discharged from the bathtub 12, and in the case it is determined that the hot water is discharged from the bathtub 12, the water supply valve 25 is opened and water is supplied to the bathtub 12, and water filling in the bathtub 12 is performed.SELECTED DRAWING: Figure 1

Description

The present invention relates to a water filling system.

If a water outage occurs in the event of a disaster such as an earthquake, it will be difficult to secure domestic water. Therefore, in the event of a disaster, fill the bathtub with water (emergency water) in case of a water outage. It is done to secure. Therefore, some water filling systems have been proposed in which the bathtub is automatically filled with water in the event of such a disaster. For example, Patent Document 1 discloses a water filling system including a receiving means for receiving an emergency warning broadcast such as an earthquake warning and a control means for executing water filling of a bathtub when the emergency warning broadcast is received by the receiving means. Has been done. According to the system of Patent Document 1, the bathtub can be filled with water before a disaster such as an earthquake occurs. Therefore, it is possible to fill the bathtub with water before damage such as water outage or power outage occurs due to the occurrence of a disaster, and it is possible to avoid a situation in which water cannot be filled due to water outage or power outage.

Japanese Unexamined Patent Publication No. 2008-45839

By the way, in the water filling system of Patent Document 1, if the emergency warning broadcast is not broadcast, the bathtub is not filled with water. Therefore, in this case, it becomes impossible to secure water for domestic use.

Even if an emergency warning broadcast is broadcast, if a disaster occurs immediately after the broadcast, it is assumed that the bathtub will not be filled due to water outage or power outage during (or before) filling. Therefore, even in this case, it may be difficult to secure domestic water.

The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a water filling system capable of reliably securing domestic water.

In order to solve the above problems, the water filling system of the first invention includes a water supply means for supplying water to the bathtub, a hot water supply means for supplying hot water to the bathtub, an opening / closing means for opening and closing the drain port of the bathtub, and the above. When the drainage port is opened by the opening / closing means, the discharge determination means for determining whether or not all the hot water in the bathtub is discharged through the drainage port and the discharge determination means discharge all the hot water in the bathtub. When it is determined that the drainage port has been closed, the opening / closing control means for controlling the opening / closing means to close the drainage port, and when the drainage port is closed by the control of the opening / closing control means, the water supply means to the bathtub. It is characterized by providing a water filling control means for supplying water to the bathtub and filling the bathtub with water.

According to the present invention, when all the hot water in the bathtub is discharged through the drain port of the bathtub, the drain port is closed by the opening / closing means and the bathtub is filled with water. In this case, while the bathtub is not filled with hot water, the bathtub can be basically filled with water, so that it is possible to reliably secure water for daily life in the event of a disaster or the like.

In the water filling system of the second invention, in the first invention, the bathtub is filled with hot water at a predetermined set temperature, and the opening / closing control means is the bathtub by the water filling control means. When the hot water filling operation for starting the hot water filling in the bathtub is performed while the water is filled in the bathtub, the opening / closing means is controlled so as to temporarily open the drain port in the bathtub. A partial wastewater treatment for partially discharging water is performed, and after the partial wastewater treatment, the hot water supply means is controlled so as to supply hot water having a temperature higher than the set temperature to the bathtub, and the water in the bathtub is treated. It is characterized by providing a hot water filling control means for adding hot water to fill the hot water.

According to the present invention, when the bathtub is filled with water and the bathtub is filled with water, the drain port is temporarily opened and a part of the water in the bathtub is discharged. After that, hot water is supplied to the bathtub, and the hot water is added to the water in the bathtub to fill the bathtub. That is, in this case, hot water is added to a part of the water filled in the bathtub, so that the hot water is filled at the set temperature. For example, it is conceivable to heat the water in the bathtub by additional cooking to generate hot water, but in this case, it is inefficient in terms of energy efficiency and it takes time to generate hot water (boil). Conceivable. In that respect, according to the above configuration in which the hot water is filled with the addition hot water, the hot water can be filled in a relatively short time with energy saving.

In the first or second invention, the water filling system of the third invention includes a lid closing detecting means for detecting that the bathtub lid provided in the bathtub is closed, and the water filling controlling means detects the lid closing. When it is detected that the bathtub lid is closed by the means, the bathtub is filled with water by the water supply means.

According to the present invention, the bathtub is filled with water on condition that the bathtub lid is closed. As a result, it is possible to prevent foreign substances from entering the water filled in the bathtub, so that it is possible to keep the domestic water in a clean state. Further, since the bathtub is not filled with water unless the bathtub lid is closed, if the bathtub lid is forgotten to be closed, it can be noticed that the bathtub lid is forgotten to be closed. Therefore, in this case, the above-mentioned effect can be surely obtained.

In the water filling system of the fourth invention, in any one of the first to third inventions, when it is determined by the cleaning means for cleaning the bathtub and the discharge determination means that all the hot water in the bathtub has been discharged. The bathtub is provided with a cleaning control means for cleaning the bathtub by the cleaning means, and the opening / closing control means closes the drain port when the bathtub is cleaned by the cleaning control means. It is characterized in that the opening / closing means is controlled.

According to the present invention, when hot water is discharged from the bathtub, the bathtub is automatically washed. Then, after cleaning the bathtub, the drain port is closed by the opening / closing means, and the bathtub is filled with water. This makes it possible to keep the domestic water clean in the bathtub.

In the water filling system of the fifth invention, in the fourth invention, the washing means has a washing water tank for storing washing water used for washing the bathtub, and water or hot water discharged from the bathtub is used as the washing water. It is characterized by being provided with an introduction means to be introduced into a tank.

According to the present invention, the water or hot water discharged from the bathtub can be introduced into the washing water tank that stores the washing water of the bathtub. Therefore, the water or hot water discharged from the bathtub can be effectively used as the washing water of the bathtub.

In the fifth invention, the water filling system of the sixth invention is such that the bathtub is filled with hot water at a predetermined set temperature, and the opening / closing control means is the bathtub by the water filling control means. When the hot water filling operation for starting the hot water filling in the bathtub is performed while the water is filled in the bathtub, the opening / closing means is controlled so as to temporarily open the drain port in the bathtub. A partial wastewater treatment for partially discharging water is performed, and after the partial wastewater treatment, the hot water supply means is controlled so as to supply hot water having a temperature higher than the set temperature to the bathtub, and the water in the bathtub is treated. A hot water filling control means for adding hot water to fill the water, and an introduction control means for controlling the introduction means so that the water discharged from the bathtub by the partial wastewater treatment is introduced into the washing water tank. It is characterized by being prepared.

According to the second invention, when the bathtub is filled with hot water, a part of the water filled in the bathtub is discharged, and then hot water is added to the bathtub. The hot water is filled by this. When a part of the water in the bathtub is discharged, the discharged water is introduced into the washing water tank. In this case, the water discharged from the bathtub before being filled with the footbath can be effectively used as cleaning water.

The schematic which shows the structure of the water filling system in 1st Embodiment. A flowchart showing the water filling process. A flowchart showing a hot water filling process. The schematic which shows the structure of the water filling system in 2nd Embodiment. A flowchart showing the water filling process. A flowchart showing a hot water filling process.

[First Embodiment]
Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. In the present embodiment, the present invention is embodied as a water filling system for filling a bathtub in a building with water. FIG. 1 is a schematic view showing the configuration of a water filling system.

As shown in FIG. 1, a bathroom 11 is provided in a building 10 such as a house. The bathroom 11 is provided with a bathtub 12. The bathtub 12 is provided with a bathtub lid 13, and the bathtub 12 is opened and closed by the bathtub lid 13. Further, the bathtub 12 is provided with a lid closing sensor 15 for detecting that the bathtub lid 13 has been closed. The lid closing sensor 15 corresponds to the lid closing detecting means.

The bathtub 12 is provided with a water supply port 17 on the side wall portion thereof. A water supply pipe 18 is connected to the water supply port 17, and a hot water supply pipe 21 and a water supply pipe 22 are connected to the water supply pipe 18. Both the hot water supply pipe 21 and the water supply pipe 22 are connected to a water supply pipe (not shown), and water is supplied to these pipes 21 and 22 from the water supply pipe.

A water heater 24 is provided in the middle of the hot water supply pipe 21. The water heater 24 is installed outdoors and generates hot water by heating the water flowing through the hot water supply pipe 21. The hot water generated by the water heater 24 is supplied to the bathtub 12 through the hot water supply pipe 21 and the water supply pipe 18, and the hot water supplied is used to fill the bathtub 12. The hot water supply means includes the water heater 24 and the hot water supply pipe 21. Further, the water heater 24 has a hot water temperature adjusting function for adjusting the temperature of the generated hot water.

A water supply valve 25 is provided in the middle of the water supply pipe 22. The water supply valve 25 is an on-off valve that opens and closes the water supply pipe 22. When the water supply pipe 22 is opened by the water supply valve 25, water is supplied to the bathtub 12 through the water supply pipe 22 and the water supply pipe 18, and the bathtub 12 is filled with the supplied water. The water supply means includes the water supply valve 25 and the water supply pipe 22.

The water supply pipe 18 is provided with a temperature sensor 26 and a water level sensor 27 in the middle thereof. The temperature sensor 26 detects the temperature of hot water or water in the bathtub 12. Further, the water level sensor 27 detects the water level of hot water or water in the bathtub 12.

The bathtub 12 is provided with a drainage port 31 at the bottom thereof. The drain port 31 is provided with an opening / closing device 32 that opens and closes the drain port 31. The switchgear 32 has a drain plug 33 that opens and closes the drain port 31, and a drive unit 34 that drives the opening and closing of the drain plug 33. The drive unit 34 is composed of, for example, a motor or the like, and the drain plug 33 is driven up and down by the drive unit 34 to open and close the drain port 31. The switchgear 32 corresponds to the switchgear means.

A drain pipe 36 is connected to the drain port 31. When the drain port 31 is opened by the opening / closing device 32 when the bathtub 12 is filled with hot water or water, the hot water or water in the bathtub 12 is discharged through the drain port 31 and the drain pipe 36.

The bathroom 11 is provided with an operation unit 38 for performing a hot water filling operation of the bathtub 12. The operation unit 38 is provided on the wall surface of the bathroom 11, for example. The operation unit 38 has a hot water filling button 38a for filling the bathtub 12 with hot water, a drain button 38b for discharging hot water from the bathtub 12, and the like.

Next, the electrical configuration of the water filling system will be described.

The water filling system includes a controller 40 that controls the control of the system. The controller 40 is configured to include a well-known microcomputer including a CPU, a ROM, a RAM, and the like, and is provided, for example, on the wall surface of a dressing room. The controller 40 corresponds to an open / close control means, a water filling control means, and a hot water filling control means.

A lid closing sensor 15, a temperature sensor 26, and a water level sensor 27 are connected to the controller 40. Sequential detection results are input to the controller 40 from these sensors 15, 26, and 27.

Further, an operation unit 38 is connected to the controller 40. When the hot water filling button 38a or the drainage button 38b of the operation unit 38 is operated, an operation signal corresponding to the button operation is input to the controller 40 from the operation unit 38.

A switchgear 32 (specifically, a drive unit 34) is connected to the controller 40. In the switchgear 32, the drive unit 34 opens and closes the drain plug 33 based on a command from the controller 40, thereby opening and closing the drain port 31.

A water heater 24 is connected to the controller 40. The water heater 24 supplies hot water to the bathtub 12, that is, fills the bathtub 12 with hot water, based on a command from the controller 40. Further, a water supply valve 25 is connected to the controller 40. The water supply valve 25 is opened based on a command from the controller 40 to fill the bathtub 12 with water.

The controller 40 performs a water filling process for filling the bathtub 12 with water and a hot water filling process for filling the bathtub 12. Therefore, in the following, these water filling treatments and hot water filling treatments will be described in order. First, the water filling process will be described based on the flowchart shown in FIG. This process is started with the operation of the drain button 38b of the operation unit 38 as a trigger. Further, here, it is assumed that the drain button 38b is operated in a state where the bathtub 12 is filled with hot water.

As shown in FIG. 2, first, in step S11, the drain plug 33 is opened by driving the drive unit 34 of the switchgear 32, thereby opening the drain port 31. As a result, the hot water in the bathtub 12 is discharged from the drain port 31.

In the following step S12, it is determined whether or not all the hot water in the bathtub 12 has been discharged based on the detection result from the water level sensor 27 (corresponding to the discharge determination means). That is, in this step, it is determined whether or not all the hot water is discharged from the bathtub 12 and the inside of the bathtub 12 is empty. When all the hot water in the bathtub 12 is discharged, the process proceeds to step S13. On the other hand, if hot water still remains in the bathtub 12, this determination is repeated until all the hot water is discharged from the bathtub 12.

It is desirable to wash the bathtub 12 after all the hot water in the bathtub 12 is discharged. By doing so, it becomes possible to keep the water filled in the bathtub 12 in a clean state by the subsequent filling with water.

In step S13, it is determined whether or not the bathtub lid 13 is closed based on the detection result from the lid closing sensor 15. When the bathtub lid 13 is closed, the process proceeds to step S14. On the other hand, when the bathtub lid 13 is not closed, this determination is repeated until the bathtub lid 13 is closed.

In step S14, the drain plug 33 is closed by driving the drive unit 34 of the switchgear 32, thereby closing the drain port 31. As a result, the bathtub 12 can be filled with water.

In the following step S15, the bathtub 12 is filled with water. In this case, by opening the water supply valve 25, water is supplied to the bathtub 12 through the water supply pipe 22 and the water supply pipe 18. As a result, the bathtub 12 is filled with water. The bathtub 12 is filled with water until the water in the bathtub 12 reaches a preset set amount of water (target amount of water). Specifically, when filling the bathtub 12 with water, it is sequentially determined whether or not the amount of water in the bathtub 12 has reached the set amount based on the detection result from the water level sensor 27. Then, when the amount of water in the bathtub 12 reaches the set amount, the water supply valve 25 is closed and the filling of the bathtub 12 with water is completed. After the filling of the bathtub 12 with water is completed, this process is completed. The set amount of water filling can be variably set based on the operation of the operation unit 38.

Subsequently, the hot water filling process will be described based on the flowchart shown in FIG. This process is started with the operation of the hot water filling button 38a of the operation unit 38 as a trigger. Further, here, it is assumed that the hot water filling button 38a is operated while the bathtub 12 is filled with water by the water filling treatment described above.

As shown in FIG. 3, first, in step S21, it is determined whether or not the inside of the bathtub 12 is filled with water based on the detection result from the water level sensor 27. If the inside of the bathtub 12 is not filled with water, that is, if the inside of the bathtub 12 is empty, this process is terminated, and if the inside of the bathtub 12 is filled with water, the process proceeds to step S22.

In step S22, the drain plug 33 is opened by driving the drive unit 34 of the switchgear 32, thereby opening the drain port 31. As a result, the water in the bathtub 12 is discharged from the drain port 31.

In the following step S23, it is determined whether or not a predetermined amount of water has been discharged from the bathtub 12 based on the detection result from the water level sensor 27. Here, the predetermined amount is set to, for example, about 1/3 to 1/2 of the set water filling amount. When a predetermined amount of water is discharged from the bathtub 12, the process proceeds to step S24, and the drive unit 34 of the switchgear 32 is driven to close the drain plug 33. As a result, the drain port 31 is closed. If a predetermined amount of water has not been discharged from the bathtub 12, the determination in step S23 is repeated until the predetermined amount of water is discharged.

As described above, in steps S22 to S24 described above, by temporarily opening the drain port 31 by the opening / closing device 32, a partial drainage treatment is performed in which only a part (predetermined amount) of the water in the bathtub 12 is discharged. ..

In the following steps S25 and S26, a process for filling the bathtub 12 with hot water is performed. The bathtub 12 is filled with hot water at a preset temperature and a preset amount of hot water. In the main hot water filling process, hot water having a temperature higher than the set temperature is supplied to the bathtub 12, and the hot water is added to the water in the bathtub 12 to fill the hot water at the set temperature.

Specifically, first, in step S25, a process of determining (calculating) the amount and temperature of the hot water supplied to the bathtub 12, that is, the addition hot water, is performed. In this process, by adding hot water to the water in the bathtub 12, the amount of hot water and the hot water temperature of the hot water are calculated so that the hot water in the bathtub 12 has the set temperature and the set amount of hot water. That is, in this process, the amount of hot water and the temperature of the additional hot water are calculated so that the bathtub 12 is filled with hot water at the set temperature and the set amount of hot water. This calculation is performed based on the amount of water in the bathtub 12 acquired based on the detection result of the water level sensor 27 and the temperature of the water in the bathtub 12 acquired based on the detection result of the temperature sensor 26.

In the following step S26, a hot water treatment is performed in which the hot water is supplied from the water heater 24 to the bathtub 12. In this process, additional hot water is supplied to the bathtub 12 with the amount of hot water and the hot water temperature calculated in step S25. As a result, the footbath is added to the water in the bathtub 12, so that the bathtub 12 is filled with hot water at a set temperature and a set amount of hot water. After that, this process ends.

According to the configuration of the present embodiment described in detail above, the following excellent effects can be obtained.

When it was determined that all the hot water in the bathtub 12 was discharged, the water supply valve 25 was opened to supply water to the bathtub 12. That is, the bathtub 12 was filled with water. In this case, while the bathtub 12 is not filled with hot water, the bathtub 12 can be basically filled with water, so that it is possible to reliably secure domestic water in the event of a disaster or the like.

Further, it is conceivable to secure the hot water used in the bathtub 12 as the domestic water by keeping the hot water stored in the bathtub 12, but considering the hygiene of the domestic water, it is possible to secure such the domestic water. It seems that the method is not preferable. In that respect, according to the above configuration, since the bathtub 12 can be filled with clean water, the domestic water can be kept in a clean state.

When the hot water filling button 38a is operated while the bathtub 12 is filled with water, the opening / closing device 32 (specifically, the drain plug 33) is opened to temporarily open the drain port 31. Part of the water in the bathtub 12 was drained. After that, hot water having a temperature higher than the set temperature was supplied to the bathtub 12 from the water heater 24, and the hot water was added to the water in the bathtub 12 to fill the bathtub 12 with hot water at the set temperature. For example, it is conceivable to heat the water filled in the bathtub 12 by additional cooking to generate hot water, but in this case, it is inefficient in terms of energy efficiency and it takes time to generate hot water (boil). it is conceivable that. In that respect, according to the above configuration, energy saving and hot water filling can be performed in a relatively short time.

When the bathtub lid 13 is closed, the bathtub 12 is filled with water. As a result, it is possible to prevent foreign matter from entering the water filled in the bathtub 12, so that the domestic water can be kept in a clean state. Further, since the bathtub 12 is not filled with water unless the bathtub lid 13 is closed, if the bathtub lid 13 is forgotten to be closed, the forgetting to close the bathtub lid 13 can be noticed. Therefore, in this case, the above-mentioned effect can be surely obtained.

[Second Embodiment]
Next, the second embodiment will be described. The water filling system of the present embodiment includes a cleaning means for automatically cleaning the bathtub 12. The water filling system of the present embodiment is different in configuration from the water filling system of the first embodiment in that respect, and the water filling system of the present embodiment will be described below focusing on the differences. Note that FIG. 4 is a schematic view showing the configuration of the vicinity of the bathtub 12 in the water filling system of the present embodiment, and will be described below based on FIG. Further, in the following description, the description of the same configuration as that of the first embodiment will be simplified or omitted as appropriate.

The water filling system of the present embodiment is provided with a cleaning device 50 that cleans the bathtub 12 with water (cleaning water) and detergent. The cleaning device 50 includes a water supply unit 51 that supplies cleaning water to the bathtub 12, and a detergent supply unit 52 that supplies detergent to the bathtub 12. The cleaning device 50 corresponds to the cleaning means.

The water supply unit 51 has a washing water tank 54 for storing washing water, a water pipe 55 connected to the washing water tank 54, and a water nozzle 56 connected to the water pipe 55 and arranged at the bottom of the bathtub 12. The wash water tank 54 is made of, for example, a resin tank, and is arranged at a position lower than the bathtub 12. Further, the water pipe 55 is provided with a water pump 58 in the middle thereof. When the water pump 58 operates, the water in the washing water tank 54 is supplied to the water nozzle 56 through the water pipe 55, and the supplied water is ejected from the water nozzle 56 into the bathtub 12. As a result, the bathtub 12 is washed (for example, rinsed) with the water. The water pump 58 constitutes a water supply unit 51 together with a washing water tank 54 and the like.

The detergent supply unit 52 has a detergent tank 61 for storing detergent (liquid detergent), a detergent pipe 62 connected to the detergent tank 61, and a detergent nozzle 63 connected to the detergent pipe 62 and arranged at the bottom of the bathtub 12. .. A detergent pump 65 is provided in the middle of the detergent pipe 62. When the detergent pump 65 operates, the detergent in the detergent tank 61 is supplied to the detergent nozzle 63 through the detergent pipe 62, and the supplied detergent is ejected from the detergent nozzle 63 into the bathtub 12. As a result, the bathtub 12 is washed with the detergent. The detergent pump 65 constitutes a detergent supply unit 52 together with a detergent tank 61 and the like.

Both the water pump 58 and the detergent pump 65 are connected to the controller 40. Each of these pumps 58 and 65 operates based on a command from the controller 40, and by the operation, cleaning of the inside of the bathtub 12 with cleaning water and detergent, that is, cleaning processing by the cleaning device 50 is performed. In the cleaning process, the bathtub 12 is cleaned by alternately supplying the cleaning water and the detergent to the bathtub 12. For example, in the cleaning process, first, cleaning water is supplied to the bathtub 12 to perform preliminary cleaning, then detergent is supplied to the bathtub 12 to perform main cleaning, and then cleaning water is supplied to the bathtub 12 again to rinse. Will be done.

The water filling system of the present embodiment is provided with an introduction means capable of introducing a part of the water discharged from the bathtub 12 into the washing water tank 54. Therefore, in the following, the configuration of the introduction means will be described.

An introduction pipe 67 for introducing water into the washing water tank 54 is connected to the washing water tank 54. The introduction pipe 67 is connected to the drain pipe 36, and the drain pipe 36 is provided with a drain valve 69 on the downstream side of the connection portion with the introduction pipe 67. The drain valve 69 is an on-off valve that opens and closes the drain pipe 36. When the water in the bathtub 12 is discharged from the drain port 31 with the drain pipe 36 closed by the drain valve 69, the water is introduced into the washing water tank 54 through the drain pipe 36 and the introduction pipe 67. As a result, the water discharged from the bathtub 12 is stored in the washing water tank 54 as washing water. The introduction means is configured to include the introduction pipe 67 and the drain valve 69. Further, the drain valve 69 is connected to the controller 40 and is opened and closed based on a command from the controller 40. In this embodiment, the controller 40 corresponds to the introduction control means.

Subsequently, the water filling process and the hot water filling process executed by the controller 40 will be described. Treatments related to the cleaning device 50 are added to the water filling treatment and the hot water filling treatment of the present embodiment, respectively. In this embodiment, the flow of the water filling treatment and the hot water filling treatment is different from that of the first embodiment. Therefore, in the following, the flow of the water filling treatment and the hot water filling treatment will be described focusing on the differences.

First, the water filling process will be described based on the flowchart shown in FIG. Note that this process is started with the operation of the drain button 38b as a trigger, as in the first embodiment.

As shown in FIG. 5, in this process, steps S31 to S33 are the same processes as steps S11 to S13 in the water filling process (FIG. 2) of the first embodiment. If it is determined in step S32 that all the hot water in the bathtub 12 is discharged and the bathtub lid 13 is closed in step S33, the process proceeds to step S34.

In step S34, the cleaning process of the bathtub 12 is executed. In this cleaning process, as described above, the water pump 58 is driven to inject cleaning water into the bathtub 12, and the detergent pump 65 is driven to inject detergent into the bathtub 12. As a result, the bathtub 12 is washed by the washing device 50.

Steps S35 and S36 after the cleaning process are the same as steps S14 and S15 in FIG. That is, in step S35, the opening / closing device 32 (drain plug 33) is opened and the drain port 31 is closed, and in step S36, the water supply valve 25 is opened to fill the bathtub 12 with water. As a result, in this treatment, the bathtub 12 is filled with water after the bathtub 12 is automatically washed. After filling with water, this process is completed.

Next, the hot water filling process will be described based on the flowchart shown in FIG. Note that this process is started by the operation of the hot water filling button 38a as a trigger, as in the first embodiment.

As shown in FIG. 6, in this process, steps S41, S42, S44 and S45 are the same processes as steps S21 to S24 in the hot water filling process (FIG. 3) of the first embodiment. That is, steps S42, S44 and S45 in this process are the same processes as steps S22 to S24 in FIG. 3, and therefore, in each of these steps S42, S44 and S45, the drain port 31 is temporarily closed by the opening / closing device 32. By opening the bathtub, a partial discharge treatment is performed to partially discharge the water in the bathtub 12.

In step S43 after step S42, the drain valve 69 is closed. As a result, in this treatment, the drain pipe 36 is closed when the partial discharge treatment is executed, so that the water discharged from the bathtub 12 by the partial discharge treatment is introduced into the washing water tank 54 through the introduction pipe 67 ( Equivalent to introduction control means). Therefore, in this treatment, the water discharged by the partial wastewater treatment is stored in the washing water tank 54 as washing water.

Although not shown, when the amount of water in the washing water tank 54 exceeds a predetermined amount, the excess amount is returned to the drain pipe 36 (more specifically, on the downstream side of the drain valve 69) through the overflow pipe. ing. As a result, the above-mentioned predetermined amount of water can be stored in the washing water tank 54. Further, the predetermined amount is larger than the amount of cleaning water required for one cleaning treatment.

In step S46 after step S45, that is, in step S46 after the partial discharge treatment, the drain valve 69 is opened. As a result, the drain pipe 36 is opened so that the water in the bathtub 12 can be discharged through the drain pipe 36. The drain valve 69 is basically in the open state, and therefore, when the water filling treatment (FIG. 5) is performed, the drain valve 69 is always in the open state.

Subsequent steps S47 and S48 are the same processes as steps S25 and S26 of FIG. By the processing of each of these steps S47 and S48, the bathtub 12 is filled with hot water by adding hot water. After that, this process ends.

According to the configuration of the present embodiment described in detail above, the same effect as that of the first embodiment can be obtained. Further, according to the configuration of the present embodiment, each of the following effects can be further obtained.

When it is determined that all the hot water has been discharged from the bathtub 12, a cleaning process for cleaning the bathtub 12 is executed, and after the cleaning process, the drain port 31 is closed by the opening / closing device 32, and the bathtub 12 is filled with hot water. I tried to do. In this case, it is possible to keep the domestic water in the bathtub 12 in a clean state.

An introduction pipe 67 for connecting the drain pipe 36 connected to the drain port 31 of the bathtub 12 to the washing water tank 54 and a drain valve 69 for opening and closing the drain pipe 36 on the downstream side of the connection portion with the introduction pipe 67 are provided. It was. Then, by closing the drain valve 69, the water discharged from the drain port 31 of the bathtub 12 can be introduced into the washing water tank 54 through the introduction pipe 67. In this case, the water discharged from the bathtub 12 can be effectively used as the cleaning water for the bathtub 12.

Specifically, by closing the drain valve 69 at the time of executing the partial discharge treatment for partially discharging the water in the bathtub 12, the water discharged by the discharge treatment is introduced into the washing water tank 54. I tried to do it. In this case, the water discharged from the bathtub 12 before the addition to the bathtub 12 can be effectively used as the washing water of the bathtub 12.

[Other Embodiments]
The present invention is not limited to the above embodiment, and may be implemented as follows, for example.

-In each of the above embodiments, it is determined whether or not all the hot water in the bathtub 12 has been discharged based on the detection result of the water level sensor 27, but it is not always necessary to determine whether or not all the hot water has been discharged in this way. There is no. For example, the elapsed time from the opening of the drain port 31 by the processing of steps S11 and S31 may be measured, and it may be determined whether or not all the hot water in the bathtub 12 has been discharged based on the measured elapsed time.

-In each of the above embodiments, the drain port 31 is closed by the opening / closing device 32 and the bathtub 12 is filled with hot water on the condition that the bathtub lid 13 is closed. It is not necessary to condition that the bathtub lid 13 is closed. That is, when it is determined that all the hot water in the bathtub 12 has been discharged, each of the above processes may be performed only when the determination is made in more detail. In this case, since it is not necessary to provide the lid closing sensor 15, the configuration can be simplified.

-In each of the above embodiments, a part of the water filled in the bathtub 12 is discharged, and then hot water is added to the water in the bathtub 12 to fill the bathtub. However, this is changed to the bathtub 12. Hot water may be generated (boiled) by heating the water inside by additional cooking. However, in this case, it is considered that the energy efficiency is low and it takes time for the hot water to boil. Therefore, in view of this point, it is desirable to fill the hot water with additional hot water as in each of the above embodiments.

-In the second embodiment, a part of the water discharged from the bathtub 12 by the partial wastewater treatment is guided to the washing water tank 54, but this is changed to change the hot water discharged from the bathtub 12. It may be led to the washing water tank 54. In this case, the hot water discharged from the bathtub 12 is stored in the washing water tank 54 as washing water.

-In the second embodiment, when the bathtub 12 is washed, the washing water stored in the washing water tank 54 is supplied to the bathtub 12, but this is changed to directly supply tap water or the like to the bathtub 12. May be supplied as cleaning water. In that case, since the washing water tank 54 is not required, it is possible to obtain an advantage that it is not necessary to secure a space for the tank.

10 ... Building, 12 ... Bathtub, 13 ... Bathtub lid, 15 ... Lid closing sensor as lid closing detection means, 31 ... Drain port, 32 ... Opening and closing device as opening and closing means, 40 ... Opening and closing control means, water filling control means, hot water A controller as a tension control means and a lead-out control means, 50 ... a cleaning device as a cleaning means, 54 ... a cleaning water tank.

Claims (6)

Water supply means to supply water to the bathtub and
A hot water supply means for supplying hot water to the bathtub and
An opening / closing means for opening / closing the drain of the bathtub,
When the drainage port is opened by the opening / closing means, a discharge determination means for determining whether or not all the hot water in the bathtub is discharged through the drainage port, and
An opening / closing control means that controls the opening / closing means so as to close the drainage port when it is determined by the discharge determination means that all the hot water in the bathtub has been discharged.
When the drainage port is closed by the control of the opening / closing control means, the water filling control means for supplying water to the bathtub by the water supply means and filling the bathtub with water.
A water filling system characterized by being equipped with. The bathtub is filled with hot water at a predetermined temperature.
The opening / closing control means temporarily opens the drain port when a hot water filling operation for starting hot water filling in the bathtub is performed while the bathtub is filled with water by the water filling control means. The opening and closing means is controlled so as to perform a partial wastewater treatment to partially discharge the water in the bathtub.
After the partial wastewater treatment, the hot water supply means is controlled so as to supply hot water having a temperature higher than the set temperature to the bathtub, and the hot water is added to the water in the bathtub to fill the bathtub. The water filling system according to claim 1, further comprising means. A lid closing detecting means for detecting that the bathtub lid provided in the bathtub is closed is provided.
The water filling control means according to claim 1 or 2, wherein when the lid closing detecting means detects that the bathtub lid is closed, the water filling means fills the bathtub with water. The water filling system described. A cleaning means for cleaning the bathtub and
A cleaning control means for cleaning the bathtub by the cleaning means when it is determined by the discharge determining means that all the hot water in the bathtub has been discharged is provided.
Any one of claims 1 to 3, wherein the opening / closing control means controls the opening / closing means so as to close the drain port when the bathtub is washed by the cleaning control means. Water filling system described in. The cleaning means has a cleaning water tank for storing cleaning water used for cleaning the bathtub.
The water filling system according to claim 4, further comprising an introduction means for introducing water or hot water discharged from the bathtub into the washing water tank. The bathtub is filled with hot water at a predetermined temperature.
The opening / closing control means temporarily opens the drain port when a hot water filling operation for starting hot water filling in the bathtub is performed while the bathtub is filled with water by the water filling control means. The opening and closing means is controlled so as to perform a partial wastewater treatment to partially discharge the water in the bathtub.
After the partial wastewater treatment, the hot water supply means is controlled so as to supply hot water having a temperature higher than the set temperature to the bathtub, and the hot water is added to the water in the bathtub to fill the bathtub. Means and
An introduction control means that controls the introduction means so that the water discharged from the bathtub by the partial wastewater treatment is introduced into the washing water tank.
5. The water filling system according to claim 5.

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