Bathroom disinfection system

Abstract

To provide a bathroom sterilization system capable of suppressing a reduction in sterilization effect in a bathroom even when a door of the bathroom is opened during operation of spraying sterilized water.SOLUTION: A bathroom sterilization system 20 comprises: a sterilized water generating portion generating sterilized water; a water sterilizing device 22 having a nozzle portion spraying / ejecting the sterilized water; a bathroom drying device 26 vaporizing the sterilized water by circulating air in a bathroom 1; a control device 30 controlling the water sterilizing device and the bathroom drying device 26; and a door sensor detecting an open / closed state of a door 9 of the bathroom. The control device comprises a bathroom sterilizing mode causing the water sterilizing device and the bathroom drying device to perform sterilized water ejecting operation and circulation operation, and performs the bathroom sterilizing mode according to a command from a user. The control device also comprises a sterilization / circulation stop mode causing the water sterilizing device and the bathroom drying device to stop the sterilized water ejecting operation and the circulation operation, and performs the sterilization / circulation stop mode when the door sensor detects that the door is opened during the operation of the sterilization / circulation stop mode.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a bathroom sterilization system for sterilizing a bathroom. Background Art

[0002] Users have great dissatisfaction with bacterial and mold contamination in bathrooms. In order to suppress such contamination, for example, as disclosed in Patent Document 1, a bathroom ventilation fan is known which is configured to sterilize the interior of a bathroom by sprinkling mist-like electrolyzed water (sterilized water) into the bathroom from an electrolyzed water spraying device mounted on the ceiling of the bathroom, and then ventilate the bathroom.

[0003] Also, as described in Patent Document 2, a bathroom heating ventilation fan is known which sprays electrolyzed water from an electrolyzed water spray unit mounted on the ceiling of a bathroom to suppress the generation of dirt such as slime caused by yeasts and the like proliferating on the floor surface of the bathroom, and further performs a drying operation and an air blowing operation thereafter to effectively suppress the proliferation of yeasts and the like in the bathroom.

[0004] On the other hand, Patent Document 3 and Patent Document 4 describe mist sauna devices that spray hot water in the form of mist into a bathroom. In the mist sauna devices of Patent Documents 3 and 4, when a door sensor detects that the bathroom door is open or that the door has been closed for a predetermined time or longer during mist operation, the mist operation is stopped. Prior Art Literature Patent Documents

[0005] Patent Document 1 Japanese Unexamined Patent Application Publication No. 2006-292183 Patent Document 2 Japanese Unexamined Patent Application Publication No. 2019-165831 Patent Document 3 Japanese Unexamined Patent Application Publication No. 2001-204788 Patent Document 4 Japanese Unexamined Patent Application Publication No. 8-266584 (Heisei 8) Summary of the Invention [Problems that the invention aims to solve]

[0006] In the devices described in the aforementioned prior art, Patent Documents 1 and 2, electrolyzed water (disinfectant water) is sprayed from the ceiling of the bathroom. As a result, the electrolyzed water settles on visible surfaces and cannot act on the back surfaces or crevices of the objects to be disinfected. Therefore, in conventional devices, electrolyzed water is sprayed, and then the air in the bathroom is circulated by a ventilation fan to allow the electrolyzed water to act. However, if the mist of the sprayed electrolyzed water is fine, the electrolyzed water vaporizes during circulation, and the concentration of the active ingredients in the electrolyzed water decreases. By the time it reaches the back or crevices of the object to be disinfected, the disinfecting effect is lost. Furthermore, the mist of the electrolyzed water adheres to various parts of the bathroom, causing limescale to form and damaging the appearance.

[0007] Furthermore, in the devices described in the prior art Patent Documents 1 and 2, when the air in the bathroom is circulated and electrolyzed water is applied, it is conceivable that the user may accidentally open the bathroom door. When the door is opened, the airflow in the bathroom is disturbed, making it impossible to direct the flow of electrolyzed water to the target area, and thus making it difficult to effectively apply the disinfecting effect.

[0008] Therefore, the inventors of the present invention diligently conducted research to solve the problems of the prior art described above. Building upon the conventional method of disinfecting bathrooms by considering factors such as the spray distance, water concentration, and water volume of disinfectant water, they discovered that by dissolving the active ingredients of the disinfectant water that vaporize after spraying—which are not used for disinfection in the conventional method—into the residual water remaining in the bathroom, the disinfectant can reach every corner of the bathroom, thereby disinfecting a wider area within the bathroom.

[0009] The inventors of this invention further researched and found that even if the bathroom door is accidentally opened while the disinfectant water is being sprayed, the reduction in the disinfecting effect can be suppressed.

[0010] This invention aims to solve the problems of the prior art and to provide a bathroom disinfection system that can disinfect over a wide area by obtaining a disinfecting effect even on parts that the disinfecting water cannot directly adhere to, and furthermore, can suppress the reduction of the disinfecting effect even if the door is opened during the disinfecting water spraying operation. [Means for solving the problem]

[0011] To achieve the above-mentioned objectives of the present invention, the present invention provides a bathroom disinfection system for disinfecting a bathroom, comprising: a disinfection water generating unit that generates disinfection water; a disinfection water dispensing unit that sprays disinfection water; a circulation unit that circulates air in the bathroom to vaporize the disinfection water; a control unit that controls the disinfection water unit and the circulation unit; and a door sensor that detects the open / closed state of the bathroom door, wherein the control unit includes a bathroom disinfection mode that executes the disinfection water dispensing operation by the disinfection water unit and the circulation operation by the circulation unit, and executes the bathroom disinfection mode in response to a command from the user. The control unit is equipped with a disinfection / circulation stop mode that stops the disinfection water discharge operation by the disinfection water device and the circulation operation by the circulation device, and is characterized in that it executes the disinfection / circulation stop mode when the door sensor detects that the door has been opened while the bathroom disinfection mode is running. In the present invention configured as described above, the control unit includes a bathroom disinfection mode that executes the disinfection water discharge operation by the disinfection water device and the circulation operation by the circulation device, and executes the bathroom disinfection mode upon command from the user, and further includes a disinfection / circulation stop mode that stops the disinfection water discharge operation by the disinfection water device and the circulation operation by the circulation device, and executes the disinfection / circulation stop mode when the door sensor detects that the door has been opened while the bathroom disinfection mode is being executed. Therefore, according to the present invention, even if the door is opened while the bathroom disinfection mode is being executed and the user accidentally enters the bathroom, the disinfection / circulation stop mode is executed, so it is possible to prevent the user from getting wet with disinfection water and to prevent disinfection water from being wasted outside the bathroom.

[0012] In the present invention, preferably, the circulation device is capable of performing a ventilation operation to discharge the air inside the bathroom to the outside of the bathroom in response to a command from the control unit, and the control unit controls the circulation device to perform a ventilation operation to discharge the air inside the bathroom to the outside of the bathroom when the disinfection / circulation stop mode is executed during the bathroom disinfection mode. In the present invention configured as described above, when the control unit executes the disinfection / circulation stop mode during the bathroom disinfection mode, it controls the circulation device to perform a ventilation operation that discharges the air inside the bathroom to the outside of the bathroom. Therefore, the disinfection / circulation stop mode not only stops the discharge of disinfectant water into the bathroom, but also discharges the air inside the bathroom to the outside of the bathroom, thereby allowing the disinfectant water inside the bathroom to be discharged outside the bathroom. As a result, according to the present invention, discomfort to the user, such as getting wet from the disinfectant water, can be suppressed.

[0013] In the present invention, preferably, the control unit includes a disinfection circulation mode in which, after executing the bathroom disinfection mode, the discharge of disinfection water is stopped and only circulation is performed, and in the disinfection circulation mode, if the door sensor detects that the bathroom door has been opened, the control unit executes a circulation stop control to stop the circulation operation of the circulation device. In the present invention configured as described above, the control unit performs a bathroom disinfection mode, and then, in the disinfection circulation mode, which stops the discharge of disinfectant water and only circulates it, if the door sensor detects that the bathroom door has been opened, it performs a circulation stop control to stop the circulation operation of the circulation device. Therefore, even after the discharge of disinfectant water has stopped, disinfectant water is still floating in the bathroom, so by stopping the circulation operation, the airflow is stopped, and the wasteful discharge of disinfectant water outside the bathroom can be suppressed.

[0014] In the present invention, preferably, when the control unit performs circulation stop control during the sterilization circulation mode, it causes the circulation device to perform a ventilation operation to discharge the air in the bathroom to the outside of the bathroom. In the present invention configured as described above, when the control unit performs a circulation stop control during the sterilization circulation mode, it causes the circulation device to perform a ventilation operation to discharge the air in the bathroom to the outside of the bathroom, thereby suppressing discomfort such as the user's body getting wet.

[0015] In the present invention, preferably, after the control unit has performed disinfection and circulation stop control, if the door sensor detects that the door has been closed, it executes the bathroom disinfection mode to restore the disinfection water discharge operation of the disinfection water device and the circulation operation of the circulation device. In the present invention configured as described above, if the door is closed after the control unit has performed disinfection and circulation stop control, it executes the bathroom disinfection mode to restore the disinfection water discharge operation of the disinfection water device and the circulation operation of the circulation device. Therefore, if the opened door is closed again, the disinfection water discharge operation and circulation operation are restored, and the bathroom can be disinfected again.

[0016] In the present invention, preferably, after the control unit has performed disinfection and circulation stop control, if the door sensor detects that the door has been closed within a predetermined time after detecting that the door has been opened, the control unit executes the bathroom disinfection mode to restore the operation of the disinfection water dispenser and the circulation device. In the present invention configured as described above, if the control unit closes the door within a predetermined time after the door has been opened following the execution of the disinfection and circulation stop control, it executes the bathroom disinfection mode to restore the disinfection water discharge operation of the disinfection water device and the circulation operation of the circulation device. Therefore, if the door is closed within a predetermined time (for example, if the door is opened for only a short time to store something forgotten in the bathroom), the disinfection water device and the circulation device are automatically restored, thus saving the lifespan of the electrodes of the water discharge device while obtaining a sufficient antibacterial and antifungal effect.

[0017] In the present invention, preferably, after the control unit has performed circulation stop control, if the door sensor detects that the door has been closed, it executes a sterilization circulation mode to restore the circulation operation of the circulation device. In the present invention configured as described above, the control unit executes a disinfection circulation mode to restore the circulation operation of the circulation device if the door opens and then closes after the circulation stop control has been performed. Therefore, if the opened door is closed again, the circulation operation is automatically restored, and the bathroom can be disinfected again.

[0018] In the present invention, preferably, after executing circulation stop control, if the door sensor detects that the door is closed within a predetermined time after detecting that the door has been opened, the control section executes a sterilization circulation mode to restore the circulation operation of the circulation device. In the present invention configured as described above, when the door is closed within a predetermined time after being opened after the control section executes circulation stop control (for example, when the door is opened only for a short time to retrieve a forgotten item in the bathroom), the sterilization circulation mode is executed to restore the circulation operation of the circulation device, so a sufficient bacteria and mold suppression effect can be obtained.

Effects of the Invention

[0019] According to the bathroom sterilization system of the present invention, a sterilization effect can be obtained even in areas to which sterilized water cannot directly adhere, so sterilization can be performed over a wide range, and furthermore, reduction of the sterilization effect can be suppressed even if the door is opened during the spraying operation of the sterilized water.

Brief Description of Drawings

[0020] [Figure 1] It is a perspective view showing a bathroom in which the bathroom sterilization system according to an embodiment of the present invention is used. [Figure 2] It is an enlarged perspective view of the vicinity of the counter in FIG. 1. [Figure 3] It is a partial cross-sectional view of the water discharge device taken along line III-III in FIG. 1. [Figure 4] FIG. 4(a) is a front view showing a nozzle section of the water discharge device, and FIG. 4(b) is a cross-sectional view taken along line A-A. [Figure 5] It is a perspective view showing a state where sterilized water is being sprayed from a sterilized water nozzle opening of a nozzle section of the water discharge device. [Figure 6] It is a perspective view showing a state where tap water is being sprayed from a retained water nozzle opening of a nozzle section of the water discharge device. [Figure 7]Figure 7 is a cross-sectional view showing a bathroom drying device of a bathroom disinfection system according to an embodiment of the present invention, where Figure 7(a) shows the "ventilation damper open state" and Figure 7(b) shows the "ventilation damper closed state". [Figure 8] This is a plan cross-sectional view showing a bathroom with a bathroom disinfection system according to an embodiment of the present invention. [Figure 9] This is a time chart showing the basic operation of the bathroom disinfection system according to an embodiment of the present invention. [Figure 10] The flowchart shows the basic operation of the bathroom disinfection system according to an embodiment of the present invention. [Figure 11] This diagram and table illustrate the "disinfectant water discharge operation" performed by the bathroom disinfection system according to an embodiment of the present invention. [Figure 12] This diagram illustrates part of the principle of the bathroom disinfection system according to an embodiment of the present invention. [Figure 13] This is a flowchart showing the operation of the first example of the bathroom disinfection system according to an embodiment of the present invention when the door is in the open position. [Figure 14] This is a flowchart showing the operation of a second example of the bathroom disinfection system according to an embodiment of the present invention when the door is in the open position. [Figure 15] This flowchart shows the operation of a third example of the bathroom disinfection system according to an embodiment of the present invention when the door is in the open position. [Modes for carrying out the invention]

[0021] First, a bathroom in which the bathroom disinfection system according to an embodiment of the present invention is used will be described with reference to Figures 1 and 2. Figure 1 is a perspective view showing a bathroom in which the bathroom disinfection system according to an embodiment of the present invention is used, and Figure 2 is an enlarged perspective view of the area near the counter in Figure 1. As shown in Figure 1, the bathroom 1 comprises a first wall 2, a second wall 4, a third wall 6, and a fourth wall 8, which form four sides of a roughly rectangular parallelepiped. A door 9, which can be opened and closed by the user, is attached to the first wall 2, indicated by a dashed line. A bathtub 10 is provided on the side of the second wall 4, and a washing area floor 12 is provided below the area between the fourth wall 8 and the bathtub 10. A drain 14 is provided near the bathtub 10 on this washing area floor 12, and hot water is discharged to the outside from this drain 14.

[0022] A counter 16 is provided on a part of the side of the third wall 6. Above the counter 16 on the third wall 6, a mirror, a water tap, a shower hose, etc. are provided. On the underside of the counter 16, a water dispensing device 22 is provided for dispensing disinfectant water and tap water (water), which constitute part of the bathroom disinfection system 20 according to this embodiment.

[0023] A ceiling 24 is attached to the upper ends of the first wall 2 to the fourth wall 8 described above, and a bathroom drying device 26 is provided on this ceiling 24 for ventilating and drying the air inside the bathroom 1, which constitutes part of the bathroom disinfection system 20. As will be described later, this bathroom drying device 26 is a device for vaporizing the disinfectant water that has been sprayed. Furthermore, outside the bathroom 1, there is an operation panel 28 for operating the bathroom disinfection system 20 and a control device 30 for operating the water discharge device 22 and the bathroom drying device 26 mentioned above.

[0024] As a variation of this embodiment, the operation panel 28 may be formed as an operation screen displayed on the screen of an electronic device such as a smartphone or remote control. That is, the operation panel 28 may form an operation unit that receives operation input from the user via operation buttons on such an operation screen. In this case, the operation panel 28 of the electronic device such as a smartphone or remote control is electrically connected to the control unit 30 by wireless communication such as the Internet or infrared communication. In other variations, the operation panel 28 may be a voice operation unit that receives operation input from the user via voice input, or a gesture operation unit that receives operation input from the user via gesture input of the user's fingers, etc. (for example, the user's fingers, etc. are detected when the user holds their fingers, etc. over a predetermined space for a certain period of time, and this is detected as operation input and accepted).

[0025] As shown in Figure 2, the counter 16 has a top plate 16a and a lower cover 16b, and is installed spaced above the washing area floor 12.

[0026] Next, the water discharge device 22 will be described with reference to Figures 3 to 6. Figure 3 is a partial cross-sectional view of the water discharge device along line III-III in Figure 1, Figure 4(a) is a front view showing the nozzle section of the water discharge device, Figure 4(b) is a cross-sectional view along line AA, Figure 5 is a perspective view showing disinfectant water being sprayed from the disinfectant water nozzle opening of the nozzle section of the water discharge device, and Figure 6 is a perspective view showing tap water being sprayed from the stagnant water nozzle opening of the nozzle section of the water discharge device.

[0027] As shown in Figure 3, a water discharge device 22 is provided inside the counter 16 (between the top plate 16a and the lower cover 16b), and this water discharge device 22 is equipped with a nozzle portion 32 that protrudes downward from the lower cover 16b of the counter 16. As shown in Figure 2, the nozzle section 32 is positioned below the counter 16, spaced apart from the washing area floor 12. Furthermore, the nozzle section 32 is located near the center of the counter 16 in the lateral direction, that is, near the center of the washing area floor 12 in the lateral direction.

[0028] Returning to Figure 3, the water discharge device 22 is equipped with a first strainer 36, a first solenoid valve 38, a second solenoid valve 40, a pressure regulating valve 42, a vacuum breaker 44, a check valve 46, a disinfectant water generation unit 48, and a second strainer 50. The first strainer 36 is connected to an external water supply pipe (not shown), and downstream of the first strainer 36, the water flow path of the tap water branches into two. Note that the vacuum breaker 44 is not required.

[0029] One of the flow paths 51 downstream of the first strainer 36 is configured to supply tap water directly to the nozzle section 32 via the first solenoid valve 38. By opening the first solenoid valve 38, tap water is supplied to the nozzle section 32. The first solenoid valve 38 and the nozzle section 32 provided in this one flow path 51 spray tap water onto the washing area floor 12, forming residual water on the washing area floor 12, and thus constitute a "residual water forming means".

[0030] The other flow path 52 downstream of the first strainer 36 is connected in the following order from upstream: second solenoid valve 40, pressure regulating valve 42, vacuum breaker 44, check valve 46, disinfectant water generation unit 48, and second strainer 50, to supply disinfectant water to the nozzle unit 32.

[0031] The first solenoid valve 38 and the second solenoid valve 40 are configured to perform the operation of opening the aforementioned water channels 51 and 52 for tap water, and the operation of closing the water channels 51 and 52, respectively.

[0032] The pressure regulating valve 42 controls the pressure of the supplied tap water. This allows the flow rate of tap water supplied to the disinfectant water generation unit 48, which will be described in detail later, to be adjusted to a desired value. By adjusting the flow rate of tap water supplied to the disinfectant water generation unit 48, the flow rate of disinfectant water supplied to the nozzle unit 32 is adjusted. Alternatively, the flow rate of tap water may be adjusted by a second solenoid valve 40 instead of the pressure regulating valve 42, or in addition to the pressure regulating valve 42.

[0033] The disinfectant water generation unit 48 is an electrolytic chamber (electrolytic cell) having an anode and a cathode. The disinfectant water generation unit 48 generates disinfectant water containing hypochlorous acid by applying a voltage between the anode and cathode and electrolyzing tap water flowing between these electrodes. Since tap water contains chloride ions, hypochlorous acid is generated by electrolyzing these chloride ions. Here, the disinfectant water generation unit 48 corresponds to the "disinfectant water generation unit," and the nozzle unit 32 corresponds to the "disinfectant water discharge unit."

[0034] The first solenoid valve 38, the second solenoid valve 40, the pressure regulating valve 42, and the disinfectant water generation unit 48 are appropriately controlled by the control device 30. This allows the spraying of tap water from the nozzle unit 32 and the spraying of disinfectant water from the nozzle unit 32 to be controlled independently of each other.

[0035] Specifically, the first solenoid valve 38 and the second solenoid valve 40 open and close the tap water flow paths 51 and 52 based on signals from the control device 30. This controls the flow rate of tap water supplied to the downstream side. The disinfectant water generation unit 48 also switches the electrolysis chamber ON / OFF based on signals from the control device 30. In this way, the control device 30 can control the concentration of various components in the disinfectant water, the instantaneous flow rate (flow rate per unit time) of the tap water and disinfectant water discharged, and the total amount of disinfectant water discharged.

[0036] The disinfectant water described above is functional water that has the function of reducing bacteria, mold, and yeast, and is, for example, water containing hypochlorous acid. Tap water contains chloride ions, so hypochlorous acid is produced by electrolyzing these chloride ions. As a result, the electrolyzed water changes into a liquid containing hypochlorous acid (HOCl). This hypochlorous acid vaporizes to become disinfectant water gas (Cl2O). This dichlorine monoxide is the active ingredient in disinfectant water gas. The disinfectant water may be water containing metal ions (for example, water containing metal ions such as silver ions, copper ions, or zinc ions) or water containing ozone. For example, when tap water is electrolyzed, acid (H) is present at the cathode. +) is consumed, and the pH rises near the cathode. In other words, alkaline water is produced near the cathode. On the other hand, at the anode, alkali (OH) - As the gas is consumed, the pH decreases near the anode. In other words, acidic water is produced near the anode. By changing the flow rate in the disinfectant water generation unit 48, the concentration of components contained in the disinfectant water can be controlled. In this case, metal ions such as silver ions, copper ions, or zinc ions, or ozone (O3), are vaporized active ingredients. In addition, while the disinfectant water generation unit 48 described above generates disinfectant water by electrolysis, it is not limited to this method, and for example, disinfectant water may be generated by dissolving a disinfectant agent in tap water.

[0037] In this embodiment, "effective" in the context of the active ingredients of vaporized disinfectant water refers to, for example, a reduction rate of 10% or more of bacteria, mold, and yeast attached to the object. More specifically, vaporized disinfectant water is defined as effective when the amount of bacteria, mold, and yeast attached to the object is reduced to 90% or less by the vaporized disinfectant water.

[0038] In this embodiment, as will be described in detail later, the nozzle portion 32 is rotationally driven by an electric motor 53. The electric motor 53 is, for example, a stepping motor. The electric motor 53 is controlled by the control device 30. As a result, the rotation angle and rotation speed of the nozzle section 32 change based on signals from the control device 30, as the electric motor 53 is controlled (see Figure 11). In addition, an operation panel 28 equipped with a switch for starting the disinfection process is connected to the control device 30, allowing bathroom users to perform operations other than disinfection as needed.

[0039] As shown in Figures 4(a) and 4(b), the nozzle section 32 includes a first water passage section (stagnant water passage section) 54, a second water passage section (disinfectant water passage section) 56, a stagnant water nozzle opening 58 formed in the stagnant water passage section 54, and a disinfectant water nozzle opening 60 formed in the disinfectant water passage section 56.

[0040] The tap water that has passed through the first solenoid valve 38 is supplied into the first water storage section 54 and discharged from the first nozzle opening 58. The disinfected water generated by the disinfected water generation section 48 is supplied into the second water storage section 56 and discharged from the second nozzle opening 60.

[0041] As shown in Figures 5 and 6, tap water is discharged from the stagnant water nozzle opening 58 in a vertical direction, and disinfectant water is discharged from the disinfectant water nozzle opening 60 in a vertical direction. Furthermore, the nozzle section 32 rotates around its axis by the electric motor 53, enabling the discharge of tap water and disinfectant water over a wide horizontal area.

[0042] Next, the bathroom drying device 26 installed on the ceiling 24 of the bathroom 1 will be described with reference to Figure 7. Figure 7 is a cross-sectional view showing the bathroom drying device of the bathroom disinfection system according to an embodiment of the present invention, where Figure 7(a) shows the "ventilation damper open state" and Figure 7(b) shows the "ventilation damper closed state".

[0043] As shown in Figure 7, the bathroom drying device 26 comprises a housing 70, the lower part of which communicates with the interior of the bathroom 1 through an opening 72. A fan 74 is provided inside the housing 70 and rotates by an electric motor, drawing in air from inside the bathroom 1. Furthermore, an exhaust damper 76 and a heater 78 are provided downstream of the fan 74 inside the housing 70. Further downstream of the exhaust damper 76, an exhaust port 80 is provided.

[0044] As shown in Figure 7(a), when the bathroom drying device 26 ventilates the bathroom 1, the exhaust damper 76 is opened, and the air inside the bathroom 1 that has been drawn in by the fan 74 is discharged to the outside through the exhaust port 80.

[0045] Next, as shown in Figure 7(b), first, when heating the bathroom 1 before and during bathing, the exhaust damper 76 is closed, the air inside the bathroom 1 drawn in by the fan 74 is heated by the heater 78, and this heated air returns to the bathroom 1 through the opening 72. In this way, the air inside the bathroom 1 is circulated with the bathroom drying device 26, and the air inside the bathroom 1 is maintained at a desired temperature (for example, 20°C).

[0046] Even when the "disinfectant water discharge" is performed using the bathroom disinfection system 20 according to this embodiment, as shown in Figure 7(b), the exhaust damper 76 is closed, the air inside the bathroom 1 drawn in by the fan 74 is heated by the heater 78, and this heated air returns to the bathroom 1 through the opening 72, so that the air inside the bathroom 1 is circulated between the bathroom 1 and the bathroom drying device 26. At this time, the inside of the bathroom 1 is not ventilated, so the air inside the bathroom 1 is trapped inside the bathroom 1.

[0047] Next, as shown in Figure 8, a door sensor 82 is provided at a position opposite one end 9a of the door 9 on the first wall 2 of the bathroom 1 to detect the open / closed state of the door 9. Known magnetic sensors and optical sensors are used for this door sensor 82. If the door sensor 82 is a magnetic sensor, a magnetic material is provided at one end 9a, and the magnetic sensor detects the magnetic force of this material to detect the open / closed state of the door 9. If the door sensor 82 is an optical sensor, a reflector is provided at one end 9a, and the open / closed state of the door 9 is detected by detecting the light reflected by this reflector. Alternatively, as the door sensor 82, a door lock sensor that detects the opening and closing of door 9 by detecting the locked state of door 9 may be used, or a human body detection sensor that detects the opening and closing of the door by detecting that a person has entered the bathroom 1 may be used.

[0048] Next, the "pre-washing" and "disinfectant water discharge" performed by the bathroom disinfection system 20 according to this embodiment will be explained with reference to Figures 9 and 10. Figure 9 is a time chart showing the basic operation of the bathroom disinfection system according to an embodiment of the present invention, and Figure 10 is a flowchart showing the basic operation of the bathroom disinfection system according to an embodiment of the present invention.

[0049] First, as shown in Figure 9, for 12 minutes from the start of operation, the bathroom drying device 26 ventilates the air inside the bathroom 1 (see Figure 7(a)), and in this state, the water discharge device 22 sprays water onto the washing area floor 12 of the bathroom 1 to perform a "pre-wash".

[0050] Next, after 12 minutes have elapsed since the start, the bathroom drying device 26 closes the exhaust damper 76 and stops ventilation for 34 minutes (see Figure 7(b)), and in that state, turns on the heater 78 to warm the air in the bathroom 1 and circulates the warmed air. After 12 minutes have elapsed since the start, the water dispensing device 22 will stop dispensing water for 4 minutes and wait. Then, for 30 minutes, the water dispensing device 22 will intermittently dispense disinfectant water as shown in Figure 11, which will be described later, and then the disinfectant water dispensing will end.

[0051] When the water discharge device 22 is dispensing disinfectant water, the bathroom drying device 26 closes the exhaust damper 76 to stop ventilation, heats the air in the bathroom 1 with the heater 78, and circulates the warmed air. This circulating air causes the discharged disinfectant water to volatilize and vaporize. While the circulation of warmed air is effective in vaporizing the disinfectant water, the disinfectant water can also be vaporized by simply turning off the heater 78 and blowing air.

[0052] The bathroom drying device 26 then keeps the exhaust damper 76 closed and stops ventilation for 26 minutes, and turns off the heater 78 to circulate the air in the bathroom 1. After that, the bathtub drying device 26 opens the exhaust damper 76 and ventilates the air in the bathroom 1 for 24 hours (see Figure 7(a)), and then stops ventilation.

[0053] Next, Figure 10 will illustrate the control flow performed by the bathroom disinfection system according to this embodiment. The control flow shown in Figure 10 and the explanation in Figure 9 described above are fundamentally the same. In Figure 10, "S" indicates each step.

[0054] As shown in Figure 10, in S1, the switch on the control panel 26 for starting the bathroom disinfection system is turned ON. In S2, the ventilation operation by the bathtub drying device (drying device) 26 is started, and at the same time, the "pre-wash" operation by the water discharge device 22 is also started. Next, proceed to S3 and determine whether 12 minutes have elapsed. Continue operating in S2 until 12 minutes have passed.

[0055] This "pre-wash" operation by the water discharge device 22 allows the necessary amount of residual water to form on the washing area floor 12, and the active ingredients of the vaporized disinfectant water described later dissolve in this residual water, thereby obtaining a further disinfecting effect.

[0056] If it is determined that 12 minutes have elapsed in S3, the process proceeds to S4, where the ventilation operation by the drying device 26 is stopped (the exhaust damper is closed), and the "pre-wash" operation by the water discharge device 22 is also stopped.

[0057] Next, the process proceeds to S5 to determine whether the water discharge device 22 has stopped the "pre-wash" operation and waited for 4 minutes. Until 4 minutes have passed, the process proceeds to S6 to determine whether the temperature inside the bathroom is 20°C or higher. If it is not 20°C or higher, the process proceeds to S7, where the heater 78 of the drying device 26 is turned ON, and a circulation operation is performed to warm and circulate the air inside the bathroom. This operation in S7 is performed immediately after the exhaust of the drying device is stopped in S4, if the temperature inside the bathroom is not 20°C or higher. Furthermore, if it is determined in S6 that the temperature inside the bathroom is 20°C or higher, the process proceeds to S8, where the drying device performs a circulation operation to circulate the air with the exhaust damper closed.

[0058] In S5, if it is determined that the water dispensing device 22 has been waiting for 4 minutes, the process proceeds to S9, and the water dispensing device 22 starts "disinfectant water dispensing". This "disinfectant water dispensing" will be explained in detail later with reference to Figure 11.

[0059] Next, the process proceeds to S10 to determine whether 30 minutes have passed since the water discharge device 22 started "disinfectant water discharge". Until 30 minutes have passed, the process proceeds to S11 to determine whether the bathroom temperature is 20°C or higher. If it is not 20°C or higher, the process proceeds to S12, where the drying device 26 turns on the heater 78 with the exhaust damper 76 closed and performs a circulation operation to warm and circulate the air in the bathroom. This operation in S12 is performed immediately after the disinfectant water discharge by the water discharge device 22 in S9, if the bathroom temperature is not 20°C or higher. Furthermore, if it is determined in S11 that the bathroom temperature is 20°C or higher, the process proceeds to S13, where the drying device 26 performs a circulation operation to circulate the air with the exhaust damper 76 closed.

[0060] In this way, the disinfectant water discharged from the water discharge device 22 is acted upon by the circulating air heated by the drying device 26, causing the disinfectant water to vaporize. The active ingredients of this vaporized disinfectant water then dissolve in the residual water remaining on the washing area floor 12, thereby improving the disinfecting effect. Furthermore, if the temperature inside the bathroom is 20°C or higher, the disinfectant water can be easily vaporized even if the heater 78 is turned OFF.

[0061] In S10, if it is determined that 30 minutes have elapsed since the start of disinfectant water discharge by the water discharge device 22, the process proceeds to S14, where the heater 78 of the drying device 26 is turned OFF and the system operates in a circulating manner with the exhaust damper 76 closed. At this time, the "disinfectant water discharge" by the water discharge device 22 is stopped.

[0062] Next, the process proceeds to S15, where it is determined whether 26 minutes have elapsed since the heater 78 of the drying device 26 was turned OFF in S14. If 26 minutes have elapsed, the process proceeds to S16, where the circulation operation of the drying device 26 with the exhaust damper 76 closed is stopped. Next, the process proceeds to S17, where the ventilation operation of the drying device 26 is continued for 24 hours with the exhaust damper 76 open. This completes the bathroom disinfection operation by the bathroom disinfection system according to this embodiment.

[0063] Next, the "disinfectant water discharge operation" performed by the water discharge device 22 will be explained with reference to Figure 11. Figure 11 is a configuration diagram and table illustrating the "disinfectant water discharge operation" performed by the bathroom disinfection system according to an embodiment of the present invention. As shown in Figure 11, disinfectant water is discharged (sprayed) from the disinfectant water nozzle opening 60 of the nozzle section 32 of the water discharge device 22 toward the washing area floor 12 of the bathroom 1. At this time, the nozzle section 32 can rotate, so it performs operations 1 → 2 → 3 → 4 → 5 → 6 → 7 in order. In operation 7, the nozzle section 32 stops, and no disinfectant water is discharged. The discharge range of the disinfectant water is in the range of 25 to 335 degrees. The angular velocity of rotation of the nozzle section 32 is slow in the central area of ​​the washing area floor 12 (operations 2 and 5) and fast in the side areas (operations 1, 3, 4, and 6), so that as much disinfectant water as possible is sprayed in the central area of ​​the washing area floor 12. Furthermore, operations 1 to 7 are performed for approximately 2.5 minutes, and this intermittent water discharge operation of the water discharge device 22 is performed for 12 rotations, so disinfectant water is discharged for a total of approximately 30 minutes.

[0064] Next, with reference to Figure 12, the basic principle of the bathroom disinfection system according to this embodiment will be explained. Figure 12 is a diagram illustrating a part of the principle of the bathroom disinfection system according to an embodiment of the present invention. As shown in Figure 12, conventionally, disinfectant water with chlorine concentration A was sprayed from a nozzle, and it was necessary that the disinfectant water reached the target area where it would exert its effect at a concentration B. Furthermore, the amount of water that landed at the target area and the duration of action were also important.

[0065] In this conventional technology, the disinfectant water sprayed from the nozzle would volatilize (vaporize) before reaching the destination, resulting in a decrease in the concentration of the disinfectant water. Therefore, it was necessary to consider "concentration × amount of water applied × duration of action" when spraying the disinfectant water, making it difficult to disinfect a wide area of ​​the bathroom.

[0066] Here, since the active ingredients of the disinfectant water that volatilize (vaporize) between the time the disinfectant water leaves the nozzle and the point of application are not utilized in the disinfection process, the inventors have discovered that these volatilized (vaporized) active ingredients of the disinfectant water can be utilized in the disinfection process. Specifically, the volatilized (vaporized) disinfectant water is dissolved in the residual water remaining on the washing area floor, bathtub apron, back of the counter, walls, etc., through the aforementioned "pre-washing" operation, thereby utilizing the active ingredients of the vaporized disinfectant water and enabling disinfection over a wide area.

[0067] Next, with reference to Figure 13, the operation of the first example of the bathroom disinfection system according to this embodiment when the door is open will be explained. This first example is an example of the operation when the door 9 is opened by the user while the bathroom drying device 26 is in heater ON circulation operation and the water discharge device 22 is intermittently discharging disinfectant water. Figure 13 is a flowchart showing the operation of the first example of the bathroom disinfection system according to the embodiment of the present invention when the door is open. In Figure 13, "T" indicates each step.

[0068] As shown in Figure 13, at T1, the switch on the control panel 28 is turned ON, and at T2, the water discharge device 22 starts the "pre-wash" operation. Next, the process proceeds to T3 to determine whether 12 minutes have elapsed. If 12 minutes have elapsed, the process proceeds to T4, and the "pre-wash" operation of the water discharge device 22 is stopped. Next, the process proceeds to T5, and the bathroom drying device 26 performs a heater ON circulation operation with the exhaust damper 76 closed, and the water discharge device 22 also starts intermittent disinfection water discharge.

[0069] Next, the process proceeds to T6, where the door sensor 82 determines whether door 9 is open or closed. If door 9 is closed (NO), the process proceeds to T7. At T7, the bathroom drying device 26 performs a heater-off circulation operation and stops the discharge of disinfectant water by the water discharge device 22. Next, the process proceeds to T8, where it is determined whether 26 minutes have elapsed. If 26 minutes have elapsed, the process proceeds to T9, where the heater-off circulation operation by the bathroom drying device 26 is stopped. Next, the process proceeds to T10, where the bathroom drying device 22 performs a 24-hour ventilation operation.

[0070] Next, in T6, if door 9 is open (YES), proceed to T11. In T11, the heater ON circulation operation by the bathroom drying device 26 is stopped, and the intermittent discharge of disinfecting water by the water discharge device 22 is also stopped. Next, proceed to T12, and the bathroom drying device 26 performs ventilation operation with the exhaust damper 76 open.

[0071] Next, the process proceeds to T13, where the door sensor 82 again determines whether door 9 is open or closed. If door 9 is open (YES), the process proceeds to T10. If door 9 is closed (NO), the process returns to T5, where the bathroom drying device 26 turns on the heater and the water discharge device 22 intermittently dispenses disinfectant water, thereby restoring the operation of the bathtub drying device 26 and the water discharge device 22. After this, the process proceeds again via T6 to T7-T10, and the operation ends.

[0072] Next, with reference to Figure 14, the operation of the second example of the bathroom disinfection system according to this embodiment when the door is open will be explained. This second example is an example of the operation when the door 9 is opened by the user while the bathroom drying device 26 is in heater ON circulation operation and the water discharge device 22 is intermittently discharging disinfectant water, and furthermore, when the door remains open for a predetermined time or not. Figure 14 is a flowchart showing the operation of the second example of the bathroom disinfection system according to the embodiment of the present invention when the door is open. In Figure 14, "P" indicates each step.

[0073] As shown in Figure 14, at P1, the switch on the control panel 28 is turned ON, and at P2, the water discharge device 22 starts the "pre-wash" operation. Next, the process proceeds to P3 to determine whether 12 minutes have elapsed. If 12 minutes have elapsed, the process proceeds to P4, and the "pre-wash" operation of the water discharge device 22 is stopped. Next, the process proceeds to P5, where the bathroom drying device 26 performs a heater ON circulation operation with the exhaust damper 76 closed, and the water discharge device 22 also starts intermittent disinfection water discharge.

[0074] Next, the process proceeds to P6, where the door sensor 82 determines whether door 9 is open or closed. If door 9 is closed (NO), the process proceeds to P7. At P7, the bathroom drying device 26 performs a heater-off circulation operation and stops the discharge of disinfectant water by the water discharge device 22. Next, the process proceeds to P8, where it is determined whether 26 minutes have elapsed. If 26 minutes have elapsed, the process proceeds to P9, where the heater-off circulation operation by the bathroom drying device 26 is stopped. Next, the process proceeds to P10, where the bathroom drying device 22 performs a 24-hour ventilation operation.

[0075] Next, if door 9 is open (YES) at P6, proceed to P11. At P11, the heater ON circulation operation by the bathroom drying device 26 is stopped, and the intermittent discharge of disinfecting water by the water discharge device 22 is also stopped. Next, proceed to P12, where the bathroom drying device 26 performs ventilation operation with the exhaust damper 76 open.

[0076] Next, the process proceeds to P13, where the door sensor 82 again determines whether door 9 is open or closed. If door 9 is open (YES), the process proceeds to P10; if door 9 is closed (NO), the process proceeds to P14. In P14, it is determined whether the time elapsed from the detection of door 9 being open in P6 to the detection of door 9 being closed in P13 is within a predetermined time. If it is not within the predetermined time (NO), the process proceeds to P10. If it is within the predetermined time (YES), the process returns to P5, where the bathroom drying device 26 is turned on and the water discharge device 22 intermittently discharges disinfected water, thereby restoring the operation of the bathtub drying device 26 and the water discharge device 22. When the system is restored, it may be necessary to operate the system for the difference between the time that the bathroom drying device 26 is normally operated in (heater ON mode) and the water dispensing device 22 is intermittently dispensing disinfectant water, and the time that the bathroom drying device 26 was operating in (heater ON mode) and the water dispensing device 22 was intermittently dispensing disinfectant water before the door 9 was opened. After this, the system proceeds again via P6, then to P7-P10, and the operation ends.

[0077] Here, the predetermined time at P14 is preferably within 1 hour from the shutdown of the bathtub drying device 26 and the water discharge device 22 at P11, and more preferably between 1 second and 10 minutes.

[0078] Next, with reference to Figure 15, the operation of the third example of the bathroom disinfection system according to this embodiment when the door is open will be explained. This third example is an example of the operation when the door 9 is opened by the user while the heater OFF circulation operation of the bathroom drying device 26 and the intermittent disinfection water discharge of the water discharge device 22 are stopped, and furthermore, when the door remains open for a predetermined time or not. Figure 15 is a flowchart showing the operation of the third example of the bathroom disinfection system according to the embodiment of the present invention when the door is open. In Figure 14, "Q" indicates each step.

[0079] As shown in Figure 15, in Q1, the switch on the control panel 28 is turned ON, and in Q2, the water discharge device 22 starts the "pre-wash" operation. Next, the process proceeds to Q3 to determine whether 12 minutes have elapsed. If 12 minutes have elapsed, the process proceeds to P4, and the "pre-wash" operation of the water discharge device 22 is stopped. Next, the process proceeds to Q5, where the bathroom drying device 26 performs a heater ON circulation operation with the exhaust damper 76 closed, and the water discharge device 22 also starts intermittent disinfection water discharge.

[0080] Next, proceed to Q7, where the door sensor 82 determines whether door 9 is open or closed. If door 9 is closed (NO), proceed to Q8, where it is determined whether 26 minutes have elapsed. If 26 minutes have elapsed, proceed to Q9, where the heater OFF circulation operation by the bathroom drying device 26 is stopped. Next, proceed to Q10, where the bathroom drying device 22 performs 24-hour ventilation operation.

[0081] Next, in Q7, if the door 9 is open (YES), proceed to Q11, and the heater OFF circulation operation by the bathroom drying device 26 is stopped. Next, proceed to Q12, and the bathroom drying device 26 performs ventilation operation with the exhaust damper 76 open.

[0082] Next, the process proceeds to Q13, where the door sensor 82 again determines whether door 9 is open or closed. If door 9 is open (YES), the process proceeds to Q10; if door 9 is closed (NO), the process proceeds to Q14. In Q14, it is determined whether the time elapsed from the detection of door 9 being open in Q7 to the detection of door 9 being closed in Q13 is within a predetermined time. If it is not within the predetermined time (NO), the process proceeds to Q10. If it is within the predetermined time (YES), the process returns to Q6, the heater OFF circulation operation by the bathroom drying device 26 is stopped, and the intermittent disinfection water discharge by the water discharge device 22 continues to stop, thereby restoring the operation of the bathtub drying device 26. When the system is restored, it is acceptable for the system to operate for only the difference between the time the bathroom drying device 26 is normally operated and the water dispensing device 22 is intermittently dispensing disinfectant water, and the time the bathroom drying device 26 was operating and the water dispensing device 22 was intermittently dispensing disinfectant water before the door 9 was opened. After this, the system proceeds again through Q7, then through Q8 to Q10, and the operation ends.

[0083] Here, the predetermined time in Q14 is shorter than the predetermined time in P14 of the second example described above, and is preferably within 30 minutes from the time the heater of the bath drying device 26 is turned off and the circulation operation stops in Q11, and more preferably between 1 second and 5 minutes.

[0084] Here, in the third example described above, Q14, which is used to determine whether or not the predetermined time has passed, may be omitted, as in the first example. In this case, if the result in Q13 in Figure 15 is NO, the process returns to Q6.

[0085] Next, the effects and benefits of the bathroom disinfection system according to this embodiment described above will be explained. Firstly, in the bathroom disinfection system 20 according to this embodiment, the control device 30 is equipped with a bathroom disinfection mode (corresponding to T5 in Figure 13, P5 in Figure 14, and Q5 in Figure 15) which executes the disinfection water discharge operation of the disinfection water device 22 and the circulation operation of the bathroom drying device 26, and executes the bathroom disinfection mode upon command from the user. Furthermore, it is equipped with a disinfection / circulation stop mode (corresponding to T11 in Figure 13 and P11 in Figure 14) which stops the disinfection water discharge operation of the disinfection water device 22 and the circulation operation of the bathroom drying device 26, and executes the disinfection / circulation stop mode when the door sensor 82 detects that the door 9 has been opened while the bathroom disinfection mode is being executed. Therefore, according to this embodiment, even if the door 9 is opened while the bathroom disinfection mode is being executed and the user accidentally enters the bathroom 1, the disinfection / circulation stop mode is executed, so that the user does not get wet with disinfection water and disinfection water is not wasted outside the bathroom 1.

[0086] Secondly, in the bathroom disinfection system 20 according to this embodiment, when the control device 30 executes the disinfection / circulation stop mode during the bathroom disinfection mode, it controls the bathroom drying device 26 to perform a ventilation operation that discharges the air inside the bathroom 1 to the outside of the bathroom 1 (corresponding to T10 and T12 in Figure 13, P10 and P12 in Figure 14, and Q10 and Q12 in Figure 15). Therefore, not only is the discharge of disinfectant water into the bathroom 1 stopped by the disinfection / circulation stop mode, but the disinfectant water inside the bathroom 1 can also be discharged to the outside of the bathroom 1 by discharging the air inside the bathroom 1 to the outside of the bathroom 1. As a result, according to this embodiment, discomfort to the user, such as getting wet from the disinfectant water, can be suppressed.

[0087] Thirdly, in the bathroom disinfection system 20 according to this embodiment, after the control device 30 has executed the bathroom disinfection mode, in the disinfection circulation mode (corresponding to T7 in Figure 13, P7 in Figure 14, and Q6 in Figure 15), which stops the discharge of disinfection water and only performs circulation, if the door sensor 82 detects that the door 9 of the bathroom 1 has opened, the control device 30 executes a circulation stop control (corresponding to Q11 in Figure 15) which stops the circulation operation of the bathroom drying device 26. Therefore, even after the discharge of disinfection water has stopped, disinfection water is still floating in the bathroom 1, so by stopping the circulation operation, the airflow is stopped, and the wasteful discharge of disinfection water outside the bathroom can be suppressed.

[0088] Fourth, in the bathroom disinfection system 20 according to this embodiment, when the control device 30 performs a circulation stop control during the disinfection circulation mode, it causes the bathroom drying device 26 to perform a ventilation operation to discharge the air inside the bathroom 1 to the outside of the bathroom 1, thereby suppressing discomfort such as the user's body getting wet.

[0089] Fifth, in the bathroom disinfection system 20 according to this embodiment, if the door 9 is closed after the control device 30 has performed disinfection and circulation stop control, it executes the bathroom disinfection mode to restore the disinfection water discharge operation of the disinfection water device 22 and the circulation operation of the bathroom drying device 26. Therefore, if the opened door 9 is closed again, the disinfection water discharge operation and circulation operation are restored, and the bathroom 1 can be disinfected again.

[0090] Sixth, in the bathroom disinfection system 20 according to this embodiment, if the control device 30 detects that the door 9 has opened after performing disinfection and circulation stop control and then closes within a predetermined time, it executes the bathroom disinfection mode to restore the disinfection water discharge operation of the disinfection water device 22 and the circulation operation of the bathroom drying device 26. Therefore, if the door is closed within a predetermined time after it has opened (for example, if the door is opened for just a short time to retrieve something forgotten in the bathroom), the disinfection water device 22 and the bathroom drying device 26 are automatically restored, thus saving the lifespan of the electrodes of the water discharge device 22 while obtaining a sufficient antibacterial and antifungal effect.

[0091] Seventh, in the bathroom disinfection system 20 according to this embodiment, if the door 9 is closed after the control device 30 has executed a circulation stop control, it executes a disinfection circulation mode to restore the circulation operation of the bathroom drying device 26. Therefore, if the opened door 9 is closed again, the circulation operation is automatically restored, and the bathroom 1 can be disinfected again.

[0092] Eighth, in the bathroom disinfection system 20 according to this embodiment, if the control device 30 executes a circulation stop control and the door 9 is opened and then closed within a predetermined time (for example, if the door is opened for a short time to find something forgotten in the bathroom), the control device 30 executes a disinfection circulation mode to restore the circulation operation of the bathroom drying device 26, thereby obtaining a sufficient fungal and mold suppression effect. [Explanation of Symbols]

[0093] 1 bathroom 9 doors 10 Bathtubs 12 Washing area floor 14 Drain 16 counters 20 Bathroom disinfection system 22 Water discharge device 26 Bathroom drying equipment 30 Control device 32. Nozzle section (disinfectant water discharge section) 48 Sterilization water generation section 51, 52 Channels 53 Electric motor 58 Nozzle opening for stagnant water 60 Nozzle opening for disinfectant water 74 Fans 76 Exhaust damper 78 Heater 80 Outlet 82 Door Sensor

Claims

1. A bathroom disinfection system that disinfects the bathroom, A disinfectant water device comprising a disinfectant water generating unit that generates disinfectant water and a disinfectant water dispensing unit that sprays disinfectant water, The above-mentioned circulating device circulates the air in the bathroom to vaporize the disinfectant water, An exhaust damper that, when closed, traps the air inside the bathroom and when opened, exhausts the air inside the bathroom. A control unit that controls the above-mentioned disinfectant water device, the above-mentioned circulation device, and the exhaust damper, The above-mentioned bathroom door has a door sensor that detects the open / closed state, The control unit described above includes a bathroom disinfection mode that performs the disinfection water discharge operation by the disinfection water device and the circulation operation by the circulation device, and executes the bathroom disinfection mode in response to a command from the user. The control unit is equipped with a disinfection / circulation stop mode that stops the disinfection water discharge operation by the disinfection water device and the circulation operation by the circulation device, and when the exhaust damper is closed and the air in the bathroom is trapped, the door sensor detects that the door has been opened, and the disinfection / circulation stop mode is executed. Furthermore, when the door sensor detects that the door has been closed within a predetermined time after detecting that the door has been opened, the bathroom disinfection mode is executed, and the disinfection water discharge operation of the disinfection water device and the circulation operation of the circulation device are restored.

2. The above-mentioned circulation device is capable of performing a ventilation operation to discharge the air inside the bathroom to the outside of the bathroom in response to a command from the above-mentioned control unit. The bathroom disinfection system according to claim 1, wherein the control unit controls the circulation device to perform a ventilation operation to discharge the air in the upper bathroom to the outside of the bathroom when the disinfection / circulation stop mode is executed during the bathroom disinfection mode.

3. The control unit described above includes a disinfection circulation mode that, after executing the bathroom disinfection mode, stops the discharge of disinfection water and only performs circulation. The bathroom disinfection system according to claim 1, wherein the control unit, in the disinfection circulation mode, executes a circulation stop control to stop the circulation operation of the circulation device when the door sensor detects that the bathroom door has been opened.

4. The bathroom disinfection system according to claim 3, wherein when the control unit executes the circulation stop control during the disinfection circulation mode, it causes the circulation device to perform a ventilation operation to discharge the air in the bathroom to the outside of the bathroom.

5. The bathroom disinfection system according to claim 3, wherein the control unit, after executing the circulation stop control, executes the disinfection circulation mode when the door sensor detects that the door has been closed, to restore the circulation operation of the circulation device.

6. The bathroom disinfection system according to claim 3, wherein the control unit, after performing circulation stop control, if the door sensor detects that the door has been closed within a predetermined time after detecting that the door has been opened, it executes the disinfection circulation mode to restore the circulation operation of the circulation device.

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