JP6675101B2 - Method of supplying sterilized water to flush toilet and flush toilet - Google Patents

Description

  The present invention relates to a method for supplying sterilized water to a water supply device and a flush toilet.

  With an increase in consumers who demand a clean and comfortable living environment, it is required for water-supply equipment in a house to suppress slime, mold, and propagation of various bacteria by removing bacteria.

  Conventionally, among such water circulating devices, a flush toilet for flushing ozone-containing water (sterilized water) generated by electrolysis has been proposed as a device for removing bacteria in a flush toilet (Patent Document 1). 2).

  Patent Literature 2 describes that, based on a command to start sterilization of a bowl portion of a toilet body, the level of stored water stored in the bowl portion is lowered from a standby time, and then ozone-containing water is poured into the bowl portion into the toilet. Cleaning is described. This flush toilet can effectively disinfect the portion of the bowl portion submerged in the stagnant water during normal use or during standby, and can suppress generation of dirt near the water line of the bowl portion. It has been.

JP-A-10-331231 JP 2010-248786 A

  However, simply flowing ozone-containing water through the bowl portion has made it difficult to spread the effect of ozone-containing water to the depth when bacteria are layered and adhered.

  That is, when bacteria are attached in layers, ozone-containing water is supplied to such layered bacteria from the surface (outermost layer) side. For this reason, it is difficult to spread the eradication effect of the ozone-containing water to the depth of the stacked bacteria even if the eradication effect is obtained for the bacteria located in the outermost layer.

  As described above, from the viewpoint of removing bacteria not only on the surface but also on the inside of the layered bacteria, further improvement in the bacteria removing effect has been desired.

  The present invention has been made in view of the above circumstances, and provides a method of supplying sanitized water to a water circulating device that can enhance the sanitizing effect as compared to a case of simply supplying sanitized water. That is the task.

  Another object of the present invention is to provide a flush toilet that can enhance the disinfection effect as compared with a case where disinfection water is simply supplied.

In order to solve the above-mentioned problems, a method for supplying sterilized water to a water supply device of the present invention comprises the following steps:
A first step of supplying normal water containing no disinfecting components to a disinfecting portion of the water circulating device, and
A second step of supplying disinfecting water containing a disinfecting component to the portion to be disinfected;
It is characterized by including.

Further, the flush toilet of the present invention,
A toilet body having a bowl portion,
A nozzle capable of supplying disinfecting water containing a disinfecting component to a disinfecting target portion of the bowl portion,
A water supply channel capable of supplying sterilized component-free ordinary water to the bowl portion,
A drainage channel capable of discharging the stored water of the bowl portion,
A flush toilet provided with a reservoir control unit capable of controlling the height of a draft line of the reservoir of the bowl portion,
The drainage channel is formed so as to be able to store the ordinary water supplied from the water supply channel in the bowl portion, and includes a trap portion that is at least partially movable.
The sterilization target portion includes a portion below the waterline at the time of standby of the stored water of the bowl portion,
The reservoir control unit is capable of controlling the height of the waterline of the reservoir by driving the trap unit,
In a state where the stored water in the bowl portion is discharged to the drainage channel by the control of the stored water control unit and the portion to be disinfected is exposed, the stored water control unit transfers the ordinary water to the portion to be disinfected. After the supply, it is possible to control the supply of the disinfecting water from the nozzle to the disinfection target portion.

  ADVANTAGE OF THE INVENTION According to this invention, a disinfection effect can be raised more than the case where only disinfection water is supplied.

It is a device block diagram in one Embodiment of the supply method of sterilization water to the water supply apparatus of this invention. It is a schematic sectional drawing which shows 1st embodiment of the supply method of sterilization water to a flush toilet in order of a process. It is a schematic sectional drawing which shows the 2nd embodiment of the supply method of sterilization water to a flush toilet in order of a process. It is a schematic sectional drawing which shows the 3rd embodiment of the supply method of sterilization water to a flush toilet in order of a process. It is an outline sectional view showing a 4th embodiment of a supply method of sterilization water to a flush toilet in order of a process. It is a schematic sectional drawing which shows 5th Embodiment of the supply method of sterilization water to a flush toilet in order of a process. It is a schematic sectional drawing which shows the modification of 1st embodiment of the supply method of sterilization water to the flush toilet shown in FIG. It is a schematic sectional drawing which shows the modification of 3rd embodiment of the supply method of sterilization water to the flush toilet shown in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In the method for supplying sterilized water to the water circulating device according to the present embodiment, a first step of supplying normal water containing no sterilizing component to a portion to be sterilized of the water circulating device; A second step of supplying disinfecting water containing a bacterial component to a portion to be disinfected.

  Here, the sanitizing water containing the sanitizing component is also simply referred to as “sanitizing water” below. Hereinafter, the normal water containing no disinfecting component having a higher spouting pressure than the disinfecting water is also simply referred to as “normal water”.

  In the present embodiment, the water supply device is a device provided with a water supply function, a drainage function, a water supply / drainage function, and the like, and is required to be kept in a sanitary condition. For example, a flush toilet, a dishwasher, a washing machine, a kitchen sink, a handwasher, a washbasin, a bathtub, and the like can be given.

  In the sterilized water, the sterilized components are dissolved. The disinfecting component according to the present embodiment is intended to be a component contained in water in order to obtain a disinfecting effect on bacteria attached to the disinfection target portion of the water circulating device. For this reason, components (hereinafter, also referred to as “residual chlorine and the like”) contained to obtain a bactericidal effect on substances contained in water, such as residual chlorine contained in tap water, are sterilized according to the present embodiment. The component is not the intended component. Of course, this does not mean that residual chlorine and the like are not contained in the sterilized water, and the residual water and the like may be contained in the sterilized water.

  Specific examples of the bacteria-eliminating component include ozone and hypochlorous acid. Sterilized water in which the sterilizing component is ozone (hereinafter, also referred to as “ozone water”) can be obtained, for example, by electrolyzing water to generate ozone gas, and dissolving the generated ozone gas in water. Bactericidal water in which the disinfecting component is hypochlorous acid can be obtained, for example, by electrolyzing water containing NaCl to generate chlorine gas, and reacting the generated chlorine gas with water.

  Ozone has a short life in water and has little concern about water pollution. Further, ozone can be generated by directly electrolyzing water such as tap water. For this reason, in the present embodiment, it is preferable that the sterilizing component is ozone.

  Ordinary water does not contain the disinfecting components contained in the disinfecting water. It is permissible to include residual chlorine and the like in ordinary water. A specific example of such ordinary water containing no bacteria-eliminating component is tap water.

  In order to achieve the eradication effect of the sanitizing water, the sanitizing water must be in direct contact with the bacteria, the sanitizing water must be active for the time necessary for the bacteria to die, and It is necessary that the effect be continued for a long time (frequency of application, effect at one time). However, there are cases where bacteria are attached in a layered manner to a part to be disinfected of a water supply device. Since the disinfecting water is supplied to the layered bacteria from the surface (outermost layer) side, the disinfecting effect of the disinfecting water is higher for the bacteria located in the outermost layer, but the disinfecting water is laminated. It is difficult to spread the effect of sanitizing water to the depth of the bacteria.

  Therefore, in this embodiment, it is possible to remove bacteria to the depth of the bacteria attached to the layer, and as a means to enhance the bacteria removal effect, wash the bacteria and dirt of the portion to be removed with ordinary water in advance, After that, sterilization water is applied.

  That is, the method of supplying the sterilizing water to the water circulating device according to the present embodiment, rather than simply spraying the bacteria with the sterilizing water, first, by applying normal water, the sterilizing component contained in the sterilizing water. It is based on the finding that it is effective against bacteria. And even if the time to apply the disinfecting water is the same, there is a difference in the disinfecting effect between the case where the normal water containing no disinfecting component is applied in advance and the case where it is not applied, before the disinfecting water is applied to the bacteria It was based on the finding that washing with normal water (washing the surface of the bacteria) improved the germicidal effect. In addition, after supplying normal water, sterilization water is supplied to the sanitization target part of the water circulating equipment, so that the adhesive force of the bacteria adhering to the sanitization target part can be weakened by the action of the sterilization component. And the proliferation of bacteria can be suppressed.

  In order to more effectively realize the effect of supplying the ordinary water, it is desirable to set the supply time of the ordinary water to about 10 seconds to 3 minutes. Further, the supply time of the sterilized water is desirably about 5 seconds to 3 minutes. Note that this cycle may be repeated a plurality of times, with the supply of ordinary water and the supply of sterilized water as one cycle.

  A water outlet for supplying ordinary water or sterilized water can be provided at an appropriate position that can be supplied to a part to be sterilized, such as a tip of a nozzle. In addition, a spreader may be provided at the water discharge port, or a movable nozzle capable of adjusting the water discharge direction may be provided in order to supply ordinary water or sterilized water to the entire part to be sterilized or to jet the water. .

  The water outlet for supplying normal water and sterilized water can be the same water outlet, for example, by providing a switching valve that switches the flow path of normal water and sterilized water using the same nozzle. . Alternatively, for example, by a method of providing a nozzle for supplying normal water and a separate nozzle for supplying sterilized water, a water outlet for supplying normal water and a water outlet for supplying sterilized water are separately provided. It may be.

  In the present embodiment, it is preferable that the ordinary water supplied to the part to be sterilized has a higher water discharge pressure than the sterilized water. Here, the water discharge pressure refers to the water supply pressure at the water discharge port.

  When supplying normal water to the part to be disinfected from a water outlet such as a nozzle, the normal water spouting pressure, that is, the supply pressure is set higher than that of the disinfected water, so that the normal water is more vigorously than the disinfected water. Can be discharged.

  When the water discharge pressure of the normal water is set higher than the water discharge pressure of the sterilized water, it is desirable that the water discharge pressure is set, for example, within a range of 1.2 to 5 times the water discharge pressure of the sterilized water. By making it 1.2 times or more, bacteria and dirt near the surface can be more easily removed from the part to be sterilized. By making it 5 times or less, it is possible to suppress the rebound of ordinary water in the part to be sterilized, and to prevent the peeled bacteria and dirt from scattering around with ordinary water.

  If the spouting pressure of ordinary water is higher than the spouting pressure of disinfecting water, the bacteria and dirt on the surface will be washed off from the part to be disinfected by the physical force of the force of the water, or the adhesion of bacteria on the surface will be weakened. Thus, the effect of the sanitizing water can be easily spread to the bacteria located inside. Thereafter, by supplying sterilized water, the bacteria-eliminating component can more effectively act on the bacteria inside this, and the bacteria-eliminating effect can be further enhanced.

  In this way, by supplying the normal water having a stronger momentum than the sterilized water to the portion to be sterilized before supplying the sterilized water, when simply supplying the sterilized water, or after supplying the normal water, The disinfection effect can be further improved than when disinfecting water is supplied.

  According to the method for supplying disinfecting water to the water supply device according to the present embodiment described above, by supplying ordinary water to the portion to be disinfected before supplying disinfecting water, bacteria and dirt are removed in advance. The effect of the sterilized water can be spread to the back of the bacteria that have been washed and stacked. Thereby, the disinfection effect can be enhanced as compared with the case where the disinfection water is simply supplied. Also, when the water discharge pressure of the normal water is set higher than the water discharge pressure of the disinfecting water, when supplying the normal water from the water discharge port such as a nozzle toward the portion to be disinfected, the normal water is discharged vigorously. The sterilization effect by the subsequent supply of sterilization water can be further enhanced.

  FIG. 1 is a device configuration diagram in one embodiment of a method for supplying sterilized water to a water supply device of the present invention.

  In the present embodiment, the ordinary water W1 from the water tank 1 and the ozone water (sterilized water W2) from the ozone water generator 2 are sterilized by the same nozzle 5 from the same nozzle 5 through the switching valve 4, It is supplied to the target part.

  As shown in FIG. 1, the water tank 1 is connected to a water supply. Tap water from a tap is supplied into the tank of the water tank 1, and ordinary water W1 is stored.

  The ozone water generator 2 is connected to the water tank 1 via a pipe 6a. A part of the tap water in the tank of the water tank 1 flows into the ozone water generator 2, and ozone gas is generated by electrolysis.

  In the ozone water generation device 2, the generated ozone gas is dissolved in water to generate ozone water (sterilized water W2). The start and stop of the generation of the ordinary water W1 in the water tank 1 and the start and stop of the generation of the sterilized water W2 in the ozone water generation device 2 are electrically connected to the water tank 1 and the ozone water generation device 2, respectively. This is performed by the nozzle control unit 3 that has been set.

  A switching valve 4 and a nozzle 5 are provided downstream of the water tank 1 and the ozone water generator 2 in this order from the upstream side.

  The switching valve 4 is connected to the water tank 1 via a pipe 6b, and is connected to the ozone water generator 2 via a pipe 6c. The nozzle 5 is connected to the switching valve 4 via a pipe 6d. The switching valve 4 is a valve that switches so that one of the normal water W1 and the sterilized water W2 is supplied to the nozzle 5.

  In other words, the switching valve 4 switches between flowing the normal water W1 by communicating the pipe 6b and the pipe 6d, or switching the flow of the sterilized water W2 by communicating the pipe 6c with the pipe 6d. The operation of the switching valve 4 is performed by the nozzle control unit 3 electrically connected to the switching valve 4.

  The nozzle 5 has a water outlet. The water supplied to the nozzle 5 is discharged from a water discharge port toward a part to be sterilized of the water circulating device. When the discharge pressure of the ordinary water W1 is set higher than that of the sterilized water W2, the ordinary water W1 is discharged more vigorously than the sterilized water W2.

  The supply of the ordinary water W1 and the sterilized water W2 to the water circulating device can be performed, for example, as follows. First, ordinary water W1 and sterilized water W2 are generated in the water tank 1 and the ozone water generation device 2, respectively.

  Next, the switching valve 4 is operated so that the pipe 6b communicates with the pipe 6d. Then, the ordinary water W1 is discharged from the water discharge port of the nozzle 5, and the ordinary water W1 is supplied to a portion to be sterilized of the water circulating device.

  After a lapse of a predetermined time, the switching valve 4 is operated so as to make the pipe 6c communicate with the pipe 6d. Thereby, the water discharged from the water outlet of the nozzle 5 is switched from the ordinary water W1 to the sterilized water W2.

  The water discharge pressure at the water discharge port of the nozzle 5 can be adjusted by the degree of opening of the switching valve 4, the pressure of the ordinary water W1 in the water tank 1, the pressure of the sterilized water W2 in the ozone water generator 2, and the like. it can. This makes it possible to adjust the water discharge pressure of the ordinary water W1 and the sterilized water W2 supplied to the sterilization target portion of the water circulating device.

  According to the method for supplying disinfecting water to the water supply device according to the present embodiment described above, by supplying ordinary water to the portion to be disinfected before supplying disinfecting water, bacteria and dirt are removed in advance. The effect of the sterilized water can be spread to the back of the bacteria that have been washed and stacked. Thereby, the disinfection effect can be enhanced as compared with the case where the disinfection water is simply supplied. Also, when the water discharge pressure of the normal water is set higher than the water discharge pressure of the disinfecting water, when supplying the normal water from the water discharge port such as a nozzle toward the portion to be disinfected, the normal water is discharged vigorously. The sterilization effect by the subsequent supply of sterilization water can be further enhanced.

  Further, in the present embodiment, since one nozzle 5 is used instead of separate nozzles for supplying the ordinary water W1 and the sterilized water W2, the size and cost of the device configuration can be reduced.

  Next, as a specific example of the method for supplying sterilized water to the water circulating device of the present invention, an embodiment in which the water circulating device is a flush toilet will be described. As will be described in detail below, in the present embodiment, the portion to be sterilized includes a portion of the bowl portion of the flush toilet below the waterline at the time of standing by of the stored water.

  2 (a) to 2 (d) are schematic sectional views showing a first embodiment of a method for supplying sterilized water to a flush toilet in the order of steps. 3 (a) to 3 (d) are schematic cross-sectional views showing a second embodiment of a method for supplying sterilized water to a flush toilet in the order of steps. 4 (a) to 4 (e) are schematic sectional views showing a third embodiment of a method for supplying sterilized water to a flush toilet in the order of steps. FIGS. 5A to 5F are schematic cross-sectional views showing a fourth embodiment of a method for supplying sterilized water to a flush toilet in the order of steps. 6 (a) to 6 (f) are schematic cross-sectional views showing a fifth embodiment of a method for supplying sterilized water to a flush toilet in the order of steps. 2 to 6, the same components are denoted by the same reference numerals, and redundant description is omitted below.

  As shown in FIG. 2 to FIG. 6, the flush toilet 10 of the present embodiment is a so-called Western toilet, which is used by a user sitting on the toilet. The flush toilet 10 includes a toilet body 10a having a bowl portion 11, and a toilet seat and a toilet lid (not shown) that can be placed above the bowl portion 11. In addition, the flush toilet 10 includes a reservoir control unit (not shown) that controls the height of the waterline of the reservoir 11 in the bowl.

  The toilet body 10a is fixed to a floor such as a toilet room, for example. Further, the toilet seat and the toilet lid are rotatably attached to one end of the toilet body 10a.

  The bowl portion 11 of the toilet body 10a has a bowl shape opened upward. Further, the toilet body 10a is provided therein with a water supply channel 21 for supplying ordinary water W1 to the bowl portion 11 and a drainage channel 22 for discharging accumulated water in the bowl portion 11 and the like.

  The upstream end of the water supply passage 21 protrudes outward from a rear portion of the toilet body 10a. Then, the upstream end is connected to an external water pipe (not shown), and tap water flows from the water pipe into the water supply channel 21 by the water pressure. The downstream end of the water supply channel 21 is disposed at the upper end of the bowl portion 11 and is provided facing the inside of the bowl portion 11. This downstream end discharges tap water flowing into the water supply passage 21 from the water pipe into the bowl portion 11 as washing water. Therefore, the downstream end of the water supply passage 21 is a water discharge part 21a that discharges the ordinary water W1 to the bowl part 11, as shown in FIG.

  For example, one water discharging section 21 a is provided in the water supply channel 21. The water discharging portion 21a discharges the ordinary water W1 from above (including the upper portion of the bowl portion 11) to the bowl portion 11 in the circumferential direction of the bowl portion 11 (the circumferential direction of the bowl) in plan view. For this reason, the normal water W1 from the water discharge part 21a flows downward while rotating in the circumferential direction along the inner surface of the bowl-shaped part of the bowl part 11, as shown by the curved arrow in FIG. In other words, the water supply channel 21 supplies the ordinary water W1 in a swirling flow from above the bowl portion 11.

  The water supply passage 21 is in a water-passing state by opening a water supply valve (not shown), and is in a water-stop state by closing the water supply valve. In other words, the water supply path 21 switches between discharging the ordinary water W1 to the bowl portion 11 and stopping it by opening and closing the water supply valve. For example, the water supply valve includes, for example, a stepping motor whose drive is controlled by a reservoir control unit, and a valve body that switches between opening and closing and switching of an opening amount at the time of opening by driving the stepping motor. Can be.

  The drainage channel 22 includes a cylindrical portion 22a, a trap portion 22b provided at a downstream end thereof, and a discharge portion (not shown) connected to an external drainage pipe (not shown). Then, the drainage channel 22 allows the pooled water, filth, and the like in the bowl portion 11 to flow from the cylindrical portion 22a to the discharge portion via the trap portion 22b, and discharges the drainage pipe from the discharge portion. As the trap portion 22b, a water sealing state (for example, a state shown in FIG. 2A) and a draining state (for example, a state shown in FIG. 4B) are caused by the vertical movement (vertical rotation) of the trap cylinder 22c. It is preferable to use a so-called rotary type which can be switched between the above-mentioned modes. More specifically, as shown in FIG. 2 (a), the flush toilet 10 is provided with the water supply channel 21 by the trap cylinder 22 c being in a posture in which the rear end thereof is directed upward (water sealing posture). The ordinary water W1 from the (water spouting section 21a) is in a sealed state in which it can be stored in the bowl section 11. Then, as shown in FIG. 4B, the flush toilet 10 can discharge the stored water to the drain passage 22 by the posture in which the rear end of the trap cylinder 22 c is turned downward (draining posture). Drainage condition. In addition, as shown in FIG. 2B, the rear end of the trap cylinder 22c is in a posture (partially draining posture) stopped at a position between the water sealing posture and the draining posture, so that the flush toilet is set. Reference numeral 10 denotes a partially sealed state in which a part of the stored water in the sealed state is discharged to the drain passage 22 and a smaller amount of the stored water than in the sealed state can be stored in the bowl portion 11.

  The reservoir control unit controls the height of the water line of the bowl 11 by driving the trap unit 22b, and exposes the sterilization target portion 15 below the water line 12a of the bowl 11 when the reservoir is on standby. Can be done. Then, in the state where the disinfection target portion 15 is exposed, the reservoir control unit supplies the normal water W1 to the disinfection target portion 15 and then supplies the disinfection water W2 from the nozzle 13 to the disinfection target portion 15. Control can be performed.

  More specifically, the reservoir control unit is electrically connected to the water supply valve of the water supply passage 21, controls the opening and closing of the water supply valve and the opening amount thereof, and controls the driving of the trap unit 22b (the control of the trap cylinder 22c). (Vertical rotation). The reservoir control unit detects a position detection signal serving as position information at the top and bottom of the rear end of the trap cylinder 22c, and based on the detected signal, drives or stops the trap cylinder 22c or turns the trap cylinder 22c in this drive. Control such as switching of the moving direction (vertical rotation direction) is performed. This causes the trap cylinder 22c to switch between the water-sealing posture, the draining posture, and the partially draining posture.

  Further, the flush toilet 10 is provided with a nozzle 13 for supplying the sterilized water W2 to the sterilization target portion 15 of the bowl portion 11. In addition, the nozzle 13 may be configured to be able to supply the ordinary water W1.

  The nozzle 13 can be provided at an appropriate position where the nozzle 13 can be supplied to the sterilization target portion 15. In the present embodiment, the nozzle 13 is provided on the rear upper side of the bowl portion 11. The nozzle 13 supplies the sterilized water W2 and the ordinary water W1 from the water discharge port 14 at the tip to the sterilization target portion 15. In order to supply the disinfecting water W2 or the ordinary water W1 to the entire disinfection target portion 15, a spreader may be provided at the water discharge port 14, or a movable nozzle capable of adjusting the water discharge direction may be provided as the nozzle 13. . For example, in the first embodiment shown in FIG. 2, as in FIG. 1, the same nozzle 13 is used to supply the ordinary water W1 and the sterilized water W2.

  The sanitization target portion 15 includes the vicinity of the water line 12a of the bowl portion 11 of the flush toilet 10 during standby, but when the flush toilet 10 is in the water-sealed state as described above, the lower portion of the bowl portion 11 is sealed with water. There is spilled water. For this reason, in the sealed state, even if the ordinary water W1 is supplied to the bowl portion 11 from the water supply channel 21 (water discharge portion 21a) or the water discharge port 14, the portion of the bowl portion 11 below the waterline 12a has the sterilization target portion 15. There is a possibility that it may be difficult to wash bacteria and dirt in advance and spread the effect of the sterilized water W2 to the depth of the laminated bacteria. Further, even if the disinfecting water W2 is supplied from the water discharge port 14 to the bowl portion 11, the disinfecting effect may be reduced in the portion of the bowl portion 11 below the waterline 12a. In other words, the concentration of the sterilized water W2 is reduced by the water that is appropriately discharged from the water supply channel 21 (water discharge unit 21a) as water for cleaning the bowl unit 11 (water discharge unit 21a), and temporarily stored as sealed water. There is a possibility that a portion below the waterline 12a at the time cannot be sterilized.

  Therefore, in the present embodiment, when the sterilized water W2 is supplied to the bowl section 11, the sterilization of the bowl section 11 is performed in a state where the level of the stored water is lowered to the draft line 12b lower than the standby water line 12a during standby. The entire target portion 15 is exposed.

In the flush toilet 10 having such a configuration, the normal water W1 and the sterilized water W2 are supplied as follows. The timing and the process time for performing each of the following steps are controlled by the reservoir control unit.
<First embodiment>
First, a first embodiment will be described with reference to FIG.

  As shown in FIG. 2A, when the flush toilet 10 is in the water-sealed state, the water level of the stored water in the bowl portion 11 of the flush toilet 10 is at the position of the waterline 12 a during standby. In such a case, first, as shown in FIG. 2B, the trap cylinder 22c is partially set to the draining posture. Thereby, the water level of the stored water is lowered to the draft line 12b below the draft line 12a in the standby state, and the entire sterilization target portion 15 of the bowl portion 11 is exposed.

  When a signal indicating that a sterilization operation is performed by supplying the normal water W1 and the subsequent sterilization water W2 is input in the sealed state, the reservoir control unit performs control to drive the trap unit 22b, The discharging operation is started. With this control, the trap cylinder 22c is slightly rotated downward to be in a partially drained attitude, and the water sealed in the trap portion 22b is partially drained. In this way, the water level of the stored water is lowered to the draft line 12b lower than the draft line 12a at the time of standby, and the entire sterilization target portion 15 of the bowl portion 11 is exposed.

  Next, as shown in FIG. 2 (c), the stored water is lowered to the waterline 12b, and the entire portion to be sterilized 15 of the bowl portion 11 is exposed. The normal water W1 is supplied from the water outlet 14 of the nozzle 13 to the sterilization target portion 15. At this time, since the entire sterilization target portion 15 is lowered from the waterline 12a during standby to the waterline 12b and is exposed, the normal water W1 from the water discharge port 14 of the nozzle 13 is directly applied to the entire sterilization target portion 15. Can be hung.

  In this way, by supplying the normal water W1 to the sterilization target portion 15 before supplying the sterilization water W2 described later, the bacteria and dirt are washed in advance, and the sterilization water is removed to the depth of the stacked bacteria. The effect of W2 can be spread, and the disinfection effect can be enhanced as compared with the case where the disinfection water W2 is simply supplied. When the water discharge pressure of the normal water W1 discharged from the water discharge port 14 of the nozzle 13 is higher than the water discharge pressure of the sterilized water W2, the normal water W1 is discharged more vigorously than the sterilized water W2. You. Therefore, the effect of cleaning bacteria and dirt by the ordinary water W1 in advance and the effect of removing bacteria by the sterilized water W2 can be further enhanced.

  Next, as shown in FIG. 2D, in a state where the stored water is lowered to the water line 12 b, under the control of the stored water control unit, the exposed part 15 to be sterilized is discharged from the water outlet 14 of the nozzle 13. Supply sterilized water W2. At this time, since the entire sterilization target portion 15 is lowered from the waterline 12a during standby to the waterline 12b and is exposed, the sterilization water W2 from the water discharge port 14 of the nozzle 13 is applied to the entire sterilization target portion 15. Can be hung directly.

  With the supply of the ordinary water W1, the bacteria and dirt on the surface of the sterilization target portion 15 are washed away in advance, or the adhesion of the bacteria on the surface is weakened. Therefore, by supplying the disinfecting water W2 to the disinfecting target portion 15, the effect of the disinfecting water can be easily spread to the bacteria located inside before washing with the ordinary water W1, and the disinfecting effect can be enhanced. it can. When the water discharge pressure of the normal water W1 discharged from the water discharge port 14 of the nozzle 13 is higher than the water discharge pressure of the sterilized water W2, the surface of the surface 15 to be sterilized is displaced by the vigorous normal water W1. Bacteria and dirt are washed away by the physical force of the force of water, or the adhesion of bacteria on the surface is weakened. Therefore, the disinfection effect by the disinfection water W2 can be further enhanced.

  After the supply of the disinfecting water W2, the water line 12b is returned to the water line 12a, which is the water level during standby, as shown in FIG. For example, under the control of the reservoir control unit, the trap cylinder 22c is turned upward to take the water-sealing position, the water supply valve of the water supply path 21 is opened, and the water supply path 21 is switched from the water stop state to the water supply state to supply water. By carrying out the water flow from the road 21 for a predetermined time, it is possible to return the stored water as the sealing water to the waterline 12a.

By condensing the stored water from the water line 12b to the water line 12a, the vicinity of the sterilization target portion 15 on which the sterilization water W2 is applied is immersed in the stored water. Therefore, the concentration of the sterilized water W2 is reduced by dilution of the sterilized water W2, and volatilization of the sterilized components contained in the sterilized water W2 can be suppressed.
<Second embodiment>
Next, a second embodiment will be described with reference to FIG.

  In the second embodiment, as shown in FIG. 3C, except that the normal water W1 is supplied from the water supply channel 21, the normal water W1 and the sterilized water W2 are Feeding takes place.

  More specifically, first, as shown in FIGS. 3A and 3B, the water level of the stored water in the bowl portion 11 of the flush toilet 10 is at the position of the water line 12 a at the time of standby, and then from the water line 12 a. Is also lowered to the draft line 12b below, exposing the entire sterilization target portion 15 of the bowl portion 11.

  Next, as shown in FIG. 3 (c), under the condition that the entire sterilization target portion 15 of the bowl portion 11 is exposed, the water removal passage 21 The normal water W1 is supplied from the water discharge section 21a. At this time, the normal water W1 discharged from the water discharge part 21a flows downward while rotating in the circumferential direction along the bowl-shaped inner surface of the bowl part 11, so that the normal water W1 is applied to the entire sterilization target portion 15. Can be hung directly.

  Thus, by supplying the normal water W1 to the sterilization target portion 15 before the supply of the sterilization water W2, the bacteria and dirt are washed in advance, and the sterilization water W2 is removed to the depth of the stacked bacteria. The effect can be spread, and the disinfection effect can be enhanced as compared with the case where the disinfection water W2 is simply supplied. When the water discharge pressure of the normal water W1 discharged from the water discharge part 21a of the water supply channel 21 is higher than the water discharge pressure of the sterilized water W2, the normal water W1 is discharged more vigorously than the sterilized water W2. Is done. Therefore, the effect of cleaning bacteria and dirt by the ordinary water W1 in advance and the effect of removing bacteria by the sterilized water W2 can be further enhanced.

  Next, as shown in FIG. 3D, in a state where the stored water is lowered to the water line 12 b, under the control of the stored water control unit, the exposed portion 15 to be sterilized is discharged from the spout 14 of the nozzle 13 to the exposed sterilization target portion 15. Supply sterilized water W2. At this time, since the entire sterilization target portion 15 is lowered from the waterline 12a during standby to the waterline 12b and is exposed, the sterilization water W2 from the water discharge port 14 of the nozzle 13 is applied to the entire sterilization target portion 15. Can be hung directly.

  With the supply of the ordinary water W1, the bacteria and dirt on the surface of the sterilization target portion 15 are washed away in advance, or the adhesion of the bacteria on the surface is weakened. Therefore, by supplying the disinfecting water W2 to the disinfecting target portion 15, the effect of the disinfecting water can be easily spread to the bacteria located inside before washing with the ordinary water W1, and the disinfecting effect can be enhanced. it can. When the water discharge pressure of the normal water W1 discharged from the water discharge part 21a of the water supply channel 21 is set higher than the water discharge pressure of the sterilized water W2, the surface of the sterilization target portion 15 is formed by the vigorous normal water W1. The bacteria and dirt are washed away by the physical force of the force of water, or the adhesion of bacteria on the surface is weakened. Therefore, the disinfection effect by the disinfection water W2 can be further enhanced.

After the supply of the disinfecting water W2, the water line 12b is returned to the water line 12a, which is the water level during standby, as shown in FIG.
<Third embodiment>
Next, a third embodiment will be described with reference to FIG.

  In the third embodiment, as shown in FIG. 4A, ordinary water W1 is supplied from the water supply channel 21 to the bowl portion 11 of the flush toilet 10 in a sealed state. This step includes, for example, a case in which ordinary water W1 is spouted from the spout 21a of the water supply passage 21 as water (wash water) for washing the bowl 11 after use of the flush toilet 10. At this time, the ordinary water W1 discharged from the water discharging part 21a flows downward while rotating in the circumferential direction along the inner surface of the bowl part 11 of the bowl part 11, and generates a swirling flow together with the stored water. It spreads over the entire portion 15 to be disinfected.

  Next, after a lapse of a predetermined time from the supply of the ordinary water W1 from the water supply channel 21, as shown in FIG. 4B, the trap cylinder 22c is set to the draining posture, and the flush toilet 10 is set to the draining state. For example, under the control of the reservoir control unit, the trap cylinder 22c is rotated downward to be in the draining posture, and the sealed water in the trap unit 22b is drained. In this way, the stored water in the bowl portion 11 is discharged to the drain passage 22.

  Next, as shown in FIG. 4C, the ordinary water W1 is supplied from the water supply channel 21 in a state in which the trap cylinder 22c is rotated upward by the control of the reservoir control unit to be in a partially drained posture. Then, the stored water is stored in the bowl portion 11 up to the water line 12b. At this time, the sterilization target portion 15 of the bowl portion 11 is in a state where the whole is exposed.

  Next, as shown in FIG. 4 (d), the stored water is stored up to the water line 12 b, and in the state where the entire sterilization target portion 15 of the bowl 11 is exposed, the exposed water is removed under the control of the water storage control unit. Disinfecting water W2 is supplied from the water discharge port 14 of the nozzle 13 to the bacteria target portion 15. At this time, since the entire sterilization target portion 15 is exposed, the sterilization water W2 from the water outlet 14 of the nozzle 13 can be directly applied to the entire sterilization target portion 15.

  With the supply of the ordinary water W1, the bacteria and dirt on the surface of the sterilization target portion 15 are washed away in advance, or the adhesion of the bacteria on the surface is weakened. Therefore, by supplying the disinfecting water W2 to the disinfecting target portion 15, the effect of the disinfecting water can be easily spread to the bacteria located inside before washing with the ordinary water W1, and the disinfecting effect can be enhanced. it can. When the water discharge pressure of the normal water W1 discharged from the water discharge part 21a of the water supply channel 21 is set higher than the water discharge pressure of the sterilized water W2, the surface of the sterilization target portion 15 is formed by the vigorous normal water W1. The bacteria and dirt are washed away by the physical force of the force of water, or the adhesion of bacteria on the surface is weakened. Therefore, the disinfection effect by the disinfection water W2 can be further enhanced.

After the supply of the disinfecting water W2, the water line 12b is returned to the water line 12a, which is the water level during standby, as shown in FIG. For example, under the control of the reservoir control unit, the trap cylinder 22c is rotated upward to take the water-sealing position, the water supply valve of the water supply path 21 is opened, and the water supply path 21 is switched from the water stop state to the water supply state to supply water. By carrying out the water flow from the road 21 for a predetermined time, it is possible to return the stored water as the sealing water to the waterline 12a.
<Fourth embodiment>
Next, a fourth embodiment will be described with reference to FIG.

  In the fourth embodiment, as shown in FIG. 5D, the pool water is stored up to the water line 12b, and the normal water W1 is supplied from the nozzle 13 in a state where the entire sterilization target portion 15 of the bowl portion 11 is exposed. After that, the sterilizing water W2 is supplied from the nozzle 13 as shown in FIG. Except for this step, the supply of the ordinary water W1 and the sterilized water W2 is performed in the same manner as in the third embodiment.

  More specifically, first, as shown in FIG. 5A, ordinary water W <b> 1 is supplied to the bowl portion 11 of the flush toilet 10 in the sealed state from the water discharge portion 21 a of the water supply channel 21. At this time, the ordinary water W1 discharged from the water discharging part 21a flows downward while rotating in the circumferential direction along the inner surface of the bowl part 11 of the bowl part 11, and generates a swirling flow together with the stored water. It spreads over the entire portion 15 to be disinfected.

  Next, after a lapse of a predetermined time from the supply of the ordinary water W1 from the water supply channel 21, as shown in FIG. 5B, the trap cylinder 22c is set to the draining posture, and the flush toilet 10 is set to the draining state. For example, under the control of the reservoir control unit, the trap cylinder 22c is rotated downward to be in the draining posture, and the sealed water in the trap unit 22b is drained. In this way, the stored water in the bowl portion 11 is discharged to the drain passage 22.

  Next, as shown in FIG. 5C, under the control of the reservoir control unit, the ordinary water W1 is supplied from the water supply channel 21 in a state where the trap cylinder 22c is rotated upward to partially take a drainage posture. Then, the stored water is stored in the bowl portion 11 up to the water line 12b. At this time, the sterilization target portion 15 of the bowl portion 11 is in a state where the whole is exposed.

  Next, as shown in FIG. 5D, in a state where the entire sterilization target portion 15 of the bowl portion 11 is exposed, the nozzle 13 is attached to the exposed sterilization target portion 15 under the control of the reservoir control unit. The ordinary water W1 is supplied from the spout 14. At this time, since the entire sterilization target portion 15 is exposed, the ordinary water W1 from the water discharge port 14 of the nozzle 13 can be directly applied to the entire sterilization target portion 15.

  In this way, after cleaning the bowl portion 11 and before supplying the disinfecting water W2, the normal water W1 is again supplied to the disinfection target portion 15, whereby the bacteria and dirt due to the normal water W1 are washed in advance. The effect and the disinfecting effect by the disinfecting water W2 can be further enhanced. When the water discharge pressure of the normal water W1 discharged from the water discharge port 14 of the nozzle 13 is higher than the water discharge pressure of the sterilized water W2, the normal water W1 is discharged more vigorously than the sterilized water W2. You. Therefore, the effect of washing bacteria and dirt with the ordinary water W1 in advance and the effect of removing bacteria with the sterilized water W2 can be further enhanced.

  Next, as shown in FIG. 5 (e), the stored water is stored up to the water line 12 b, and in the state where the entire sterilization target portion 15 of the bowl portion 11 is exposed, the exposed water is removed under the control of the water storage control unit. Disinfecting water W2 is supplied from the water discharge port 14 of the nozzle 13 to the bacteria target portion 15. At this time, since the entire sterilization target portion 15 is exposed, the sterilization water W2 from the water outlet 14 of the nozzle 13 can be directly applied to the entire sterilization target portion 15.

  With the supply of the ordinary water W1, the bacteria and dirt on the surface of the sterilization target portion 15 are washed away in advance, or the adhesion of the bacteria on the surface is weakened. Therefore, by supplying the disinfecting water W2 to the disinfecting target portion 15, the effect of the disinfecting water can be easily spread to the bacteria located inside before washing with the ordinary water W1, and the disinfecting effect can be enhanced. it can. When the water discharge pressure of the normal water W1 discharged from the water discharge port 14 of the nozzle 13 is higher than the water discharge pressure of the sterilized water W2, the surface of the surface 15 to be sterilized is displaced by the vigorous normal water W1. Bacteria and dirt are washed away by the physical force of the force of water, or the adhesion of bacteria on the surface is weakened. Therefore, the disinfection effect by the disinfection water W2 can be further enhanced.

After the supply of the disinfecting water W2, the water line 12b is returned to the water line 12a, which is the water level during standby, as shown in FIG.
<Fifth embodiment>
Next, a fifth embodiment will be described with reference to FIG.

  In the fifth embodiment, as shown in FIG. 6D, except that the ordinary water W1 is supplied from the water supply channel 21, the ordinary water W1 and the sterilized water W2 are removed in the same manner as in the fourth embodiment. Feeding takes place.

  More specifically, first, as shown in FIG. 6A, ordinary water W <b> 1 is supplied to the bowl portion 11 of the flush toilet 10 in the sealed state from the water discharge portion 21 a of the water supply channel 21. At this time, the ordinary water W1 discharged from the water discharging part 21a flows downward while rotating in the circumferential direction along the inner surface of the bowl part 11 of the bowl part 11, and generates a swirling flow together with the stored water. It spreads over the entire portion 15 to be disinfected.

  Next, after a lapse of a predetermined time from the supply of the ordinary water W1 from the water supply channel 21, as shown in FIG. 6B, the trap cylinder 22c is set to the draining posture, and the flush toilet 10 is set to the draining state. For example, under the control of the reservoir control unit, the trap cylinder 22c is rotated downward to be in the draining posture, and the sealed water in the trap unit 22b is drained. In this way, the stored water in the bowl portion 11 is discharged to the drain passage 22.

  Next, as shown in FIG. 6C, the ordinary water W1 is supplied from the water supply channel 21 in a state where the trap cylinder 22c is rotated upward and partially in the drainage position under the control of the reservoir control unit. Then, the stored water is stored in the bowl portion 11 up to the water line 12b. At this time, the sterilization target portion 15 of the bowl portion 11 is in a state where the whole is exposed.

  Next, as shown in FIG. 6 (d), in a state where the entire sterilization target portion 15 of the bowl portion 11 is exposed, the water removal passage 21 controls the exposed sterilization target portion 15 under the control of the reservoir control unit. The normal water W1 is supplied from the water discharge section 21a. At this time, the normal water W1 discharged from the water discharge part 21a flows downward while rotating in the circumferential direction along the bowl-shaped inner surface of the bowl part 11, so that the normal water W1 is applied to the entire sterilization target portion 15. Can be hung directly.

  In this way, after cleaning the bowl portion 11 and before supplying the disinfecting water W2, the normal water W1 is again supplied to the disinfection target portion 15, whereby the bacteria and dirt due to the normal water W1 are washed in advance. The effect and the disinfecting effect by the disinfecting water W2 can be further enhanced. When the water discharge pressure of the normal water W1 discharged from the water discharge part 21a of the water supply channel 21 is higher than the water discharge pressure of the sterilized water W2, the normal water W1 is discharged more vigorously than the sterilized water W2. Is done. Therefore, the effect of washing bacteria and dirt with the ordinary water W1 in advance and the effect of removing bacteria with the sterilized water W2 can be further enhanced.

  Next, as shown in FIG. 6 (e), the stored water is stored up to the water line 12 b, and in the state where the entire sterilization target portion 15 of the bowl portion 11 is exposed, the exposed water is removed under the control of the water storage control unit. Disinfecting water W2 is supplied from the water discharge port 14 of the nozzle 13 to the bacteria target portion 15. At this time, since the entire sterilization target portion 15 is exposed, the sterilization water W2 from the water outlet 14 of the nozzle 13 can be directly applied to the entire sterilization target portion 15.

  With the supply of the ordinary water W1, the bacteria and dirt on the surface of the sterilization target portion 15 are washed away in advance, or the adhesion of the bacteria on the surface is weakened. Therefore, by supplying the disinfecting water W2 to the disinfecting target portion 15, the effect of the disinfecting water can be easily spread to the bacteria located inside before washing with the ordinary water W1, and the disinfecting effect can be enhanced. it can. When the water discharge pressure of the normal water W1 discharged from the water discharge part 21a of the water supply channel 21 is set higher than the water discharge pressure of the sterilized water W2, the surface of the sterilization target portion 15 is formed by the vigorous normal water W1. The bacteria and dirt are washed away by the physical force of the force of water, or the adhesion of bacteria on the surface is weakened. Therefore, the disinfection effect by the disinfection water W2 can be further enhanced.

  After the supply of the disinfecting water W2, the water line 12b is returned to the water line 12a, which is the water level during standby, as shown in FIG.

  According to the method for supplying disinfecting water to the water supply device according to the present embodiment described above, by supplying ordinary water to the portion to be disinfected before supplying disinfecting water, bacteria and dirt are removed in advance. The effect of the sterilized water can be spread to the back of the bacteria that have been washed and stacked. Therefore, the disinfection effect can be enhanced as compared with the case where the disinfection water is simply supplied. Also, when the water discharge pressure of the normal water is higher than the water discharge pressure of the disinfecting water, when supplying the normal water from the water discharge port such as a nozzle to the part to be disinfected, discharge the normal water vigorously. The sterilization effect by the subsequent supply of sterilization water can be further enhanced.

  Further, in the present embodiment, since normal water and sterilized water can be directly applied to a portion to be sterilized below the waterline at the time of standby, the portion to be sterilized can be effectively sterilized, and the bowl portion can be effectively sterilized. Cleanliness and hygiene can be improved.

  In the present embodiment, a mechanical draining mechanism toilet having a rotatable drain having a bellows-type trap portion capable of inverting driving up and down is used, but instead, a so-called siphon jet type toilet or the like is used. Alternatively, a flush toilet for draining by another method may be used.

  Further, in the present embodiment, a flush toilet in which a part of the discharge mechanism is movable can be used in the toilet having the fixed discharge mechanism.

  FIG. 7 is a schematic sectional view showing a modified example of the first embodiment of the method for supplying sterilized water to the flush toilet shown in FIG.

  The flush toilet 100 shown in FIG. 7 includes a toilet body 100a having a bowl portion 110. The toilet body 100a includes a water supply passage 210 for supplying ordinary water W1 to the bowl portion 110 and a drainage passage 220 for discharging accumulated water in the bowl portion 110 therein.

  Further, the flush toilet 100 includes a nozzle 130 that supplies the sterilized water W2 to the sterilization target portion 150 of the bowl portion 110. Note that the nozzle 130 may be configured to be able to supply the ordinary water W1.

  Further, the flush toilet 100 includes a reservoir control unit (not shown) that controls the height of the waterline of the reservoir 110 in the bowl. The water supply channel 210, the nozzle 130, and the stored water control unit may have the same configuration as that described with reference to FIG. 2, and a description thereof will be omitted below.

  The drainage channel 220 includes a discharge portion 220a, a trap portion 220b, and a trap member 220c extending obliquely upward from the bottom surface 110a of the bowl portion 110. The discharge part 220a is connected to an external drain pipe (not shown). The trap member 220c includes a first trap member 220c1 extending from the bottom surface 110a of the bowl portion 110, and a second trap member 220c2 extending from the upper end of the first trap member 220c1. Further, the second trap member 220c2 is configured to be rotatable toward the discharge unit 220a side with the joint portion 220b3 with the first trap member 220c1 as a fulcrum, as shown in FIG. 7B.

  In this modified example, as shown in FIG. 7A, a trap structure is formed in the trap portion 220b by setting the upper end of the second trap member 220c2 to a posture obliquely upward (water sealing posture). As a result, the flush toilet 100 is in a sealed state in which the ordinary water W1 from the water supply channel 210 can be stored in the bowl portion 110, and the stored water is stored up to the waterline 120a during standby. Then, as shown in FIG. 7B, the upper end of the second trap member 220c2 is turned to the discharge part 220a side so as to be turned downward (partially draining posture), so that the pool of the bowl part 110 is stored. Part of the water is drained to the drain 220, and a partially sealed state is established in which a smaller amount of stored water than the sealed state can be stored in the bowl portion 110. At this time, the water level of the stored water is lowered to a draft line 120b lower than the standby draft line 120a.

  As described above, the upper end of the second trap member 220c2 is partially drained, the stored water is lowered to the water line 120b, and the entire sterilization target portion 150 of the bowl portion 110 is exposed, and the control of the stored water control unit is performed. The normal water W1 and the sterilized water W2 are supplied from the water outlet 140 of the nozzle 130.

  FIG. 8 is a schematic cross-sectional view showing a modification of the third embodiment of the method for supplying sterilized water to the flush toilet shown in FIG. In FIG. 8, the same components as those in FIG. 7 are denoted by the same reference numerals, and the duplicate description will be omitted below.

  In this modification, as shown in FIG. 8A, except that the ordinary water W1 is supplied from the water supply channel 21, the modification is the same as the modification of the first embodiment described with reference to FIG. , Normal water W1 and sterilized water W2 are supplied.

  More specifically, first, as shown in FIG. 8A, ordinary water W1 is supplied to the bowl portion 110 of the flush toilet 100 in the sealed state from the water discharge portion 210a of the water supply passage 210. At this time, the ordinary water W1 discharged from the water discharging unit 210a flows downward while rotating in the circumferential direction along the inner surface of the bowl portion 110, and generates a swirling flow together with the stored water. The entire part 150 to be disinfected is distributed.

  In the flush toilet 100, the stored water in the bowl portion 110 is discharged to the drainage channel 220 by supplying the ordinary water W1 from the water supply channel 210 for a predetermined time.

  After that, as shown in FIG. 8B, the upper end of the second trap member 220c2 is turned to the discharge part 220a side to take a partially drained posture, so that the pool water in the bowl part 110 is lowered to the water line 120b. State. Then, with the entire sterilization target portion 150 of the bowl portion 110 exposed, the sterilization water W2 is supplied to the exposed sterilization target portion 150 from the water outlet 140 of the nozzle 130 to the exposed sterilization target portion 150 under the control of the reservoir control unit. . At this time, since the entire sterilization target portion 150 is exposed, the sterilization water W2 from the water outlet 140 of the nozzle 130 can be directly applied to the entire sterilization target portion 150.

  After the supply of the disinfecting water W2, as shown in FIG. 8C, the upper end of the second trap member 220c2 is set in a water sealing posture in which the upper end is directed obliquely upward, and the water is supplied from the water supply passage 210 for a predetermined time. Then, the waterline 120b is returned to the waterline 120a, which is the water level during standby.

As described above, the method for supplying sterilized water to the water supply device of the present invention is characterized by including the following steps.
A first step of supplying normal water W1 containing no sterilizing component to the sterilization target portion 15 of the water circulating device.
A second step of supplying sanitizing water W2 containing the sanitizing component to the sanitizing target portion 15;

  In the method for supplying sterilized water to the water circulating device, the sterilized component in the second step is preferably ozone.

  In the method of supplying sterilized water to the water circulating device, it is more preferable that the water discharge pressure of the normal water in the first step is higher than the water discharge pressure of the sterilized water in the second step.

  In this method of supplying sterilized water to the water circulating device, the water circulating device is the flush toilet 10, and the sterilization target portion 15 is located below the water line 12 a of the bowl portion 11 of the flush toilet 10 during the standby time of the stored water. It is particularly preferred to include a moiety.

  The flush toilet 10 of the present invention includes a toilet body 10a having a bowl portion 11 and a nozzle 13 capable of supplying a sterilization water W2 containing a sterilization component to a portion of the bowl portion 11 to be sterilized. Further, the flush toilet 10 of the present invention includes a water supply channel 21 capable of supplying the bowl portion 11 with ordinary water W1 containing no sterilizing component, a drainage channel 22 capable of discharging stored water in the bowl portion 11, a bowl portion 11 And a reservoir control unit capable of controlling the height of the waterline 12a.

  The drainage channel 22 is formed so as to be able to store the ordinary water W1 supplied from the water supply channel 21 in the bowl portion 11, and includes a trap portion 22b that is at least partially movable. The sterilization target portion 15 includes a portion below the waterline 12a when the stored water in the bowl portion 11 is on standby. The reservoir control unit can control the height of the waterline 12a of the reservoir 11 by driving the trap unit 22b. In a state where the stored water in the bowl portion 11 is discharged to the drainage channel 22 under the control of the stored water control unit and the sterilization target portion 15 is exposed, the stored water control unit supplies the ordinary water to the sterilization target portion. In addition, it is possible to control the supply of disinfecting water from the nozzle to the disinfection target portion.

  In this flush toilet, the nozzle 13 can supply the disinfected water W2 and the normal water W1 containing no disinfecting component to the disinfection target portion 15. Control to supply the ordinary water W1 is possible.

  The method for supplying sterilized water to the water supply device and the flush toilet of the present invention are not limited to the above embodiments.

Hereinafter, the method for supplying sterilized water to the water supply device of the present invention will be described together with the examples. Not something.
<Example>
Tap water (normal water) and ozone water (sterilized water) were supplied to the part to be sterilized from the same nozzle. The experimental conditions are as follows.

  A plate formed of an acrylic resin was used as a substitute for the water circulating device. Then, about 106 Cladosporium bacteria were applied to the surface of this plate to obtain a test sample.

Then, to this test sample, sterilized water was supplied for 10 seconds at intervals of 5 seconds after supplying normal water for 50 seconds. Tap water was used as ordinary water, and ozone water obtained by dissolving about 2 mg / L of ozone gas in tap water was used as sterilization water. The supply of ordinary water was 1.5 times the pressure of the supply of ozone water.
<Comparative example>
Only ozone water (sterilized water) was supplied from the nozzle to the part to be sterilized. The experimental conditions are as follows.

For the same test sample as in the example, the same sterilized water as in the example was supplied for 60 seconds.
<Measurement of residual bacteria rate>
The residual rate of the bacteria in the test sample after each experiment of the examples and comparative examples was measured, and the eradication effect was evaluated.

  The residual bacteria rate was calculated as follows. The bacteria-coated surface of the test sample after each experiment was washed out with the extract, and the solution was spread on a potato dextrose agar medium (PDA medium), cultured, and the number of bacteria was measured. Then, the eradication rate with respect to the number of cells of the test sample that was not subjected to eradication was calculated.

  The residual bacteria ratio was 49.4% in the comparative example, but 0.01% in the example.

  As a result, there is a difference between the numerical values of the example and the comparative example. From this, it was confirmed that the sterilization effect was enhanced when the sterilized water was applied after supplying the normal water, rather than when only the sterilized water was applied.

  That is, it was found that, first, the bacteria were easily affected by spraying ordinary water containing no bacteria-eliminating component, rather than simply applying the bacteria-free water to the bacteria. In addition, even if the time for disinfecting water is shortened by applying ordinary water without disinfecting components having a higher discharge pressure than disinfecting water containing disinfecting components, simply apply the disinfecting water to the bacteria. The residual bacteria rate was significantly reduced as compared with the case where

W1 Ordinary water containing no disinfecting components W2 Disinfecting water containing disinfecting components 10, 100 Rinse toilet 10a, 100a Toilet bowl body 11, 110 Bowl portions 12a, 12b, 120a, 120b Water lines 13, 130 Nozzles 14 Spouts 15 Parts to be disinfected 21, 210 Water supply channel 22, 220 Drainage channel 22b, 220b Trap portion

Claims (6)

A method of supplying sterilized water to a flush toilet,
The flush toilet is
A nozzle capable of supplying disinfecting water containing a disinfecting component to a disinfecting target portion of the bowl portion,
A water supply channel capable of supplying sterilized component-free ordinary water to the bowl portion,
A drainage channel capable of discharging the stored water of the bowl portion ,
The drainage channel includes a trap portion at least partially movable,
The trap portion is a water-sealing posture capable of storing the ordinary water in the bowl portion, a drainage posture capable of discharging water stored in the bowl portion, and is located between the water-sealing posture and the drainage posture. It is possible to switch to a partially drained posture in which a smaller amount of stored water than in the closed water posture can be stored in the bowl portion,
The ordinary water from the water discharge section provided in the water supply channel flows downward while rotating in the circumferential direction along the inner surface of the bowl portion of the bowl portion,
The supply method includes:
The following steps:
A first step of supplying the normal water from the water discharging section to the sterilization target portion, and a second step of supplying the sterilization water from the nozzle to the sterilization target portion ,
A method for supplying sterilized water to a flush toilet , wherein the second step is performed in a state where the trap portion is kept in the partially drained posture .   The method for supplying sterilized water to a flush toilet according to claim 1, wherein the sterilizing component in the second step is ozone.   The supply of sterilized water to a flush toilet according to claim 1 or 2, wherein the water discharge pressure of the ordinary water in the first step is higher than the water discharge pressure of the sterilized water in the second step. Method.   The said sanitization target part contains the part below the draft line at the time of the standing water of the bowl part of the said flush toilet, The removal to the flush toilet according to any one of Claims 1 to 3 characterized by the above-mentioned. Bacterial water supply method. A toilet body having a bowl portion,
A nozzle capable of supplying disinfecting water containing a disinfecting component to a disinfecting target portion of the bowl portion,
A water supply channel capable of supplying sterilized component-free ordinary water to the bowl portion,
A drainage channel capable of discharging the stored water of the bowl portion,
A reservoir control unit capable of controlling the height of the waterline of the reservoir of the bowl portion,
The drainage channel includes a trap portion at least partially movable,
The trap portion is a water-sealing position capable of storing the ordinary water in the bowl portion, a drainage position capable of discharging stored water in the bowl portion, and is located between the water-sealing position and the drainage position. It is possible to switch to a partially drained posture in which a smaller amount of stored water than in the closed water posture can be stored in the bowl portion,
The normal water from the spout provided in the water supply channel is a flush toilet that flows downward while rotating in a circumferential direction along a bowl-shaped inner surface of the bowl portion,
Before SL eradication target portion includes a waterline following parts during standby of accumulated water in the bowl portion,
The reservoir control unit is capable of controlling the height of the waterline of the reservoir by driving the trap unit,
In a state where the stored water in the bowl portion is discharged to the drainage channel under the control of the stored water control portion and the portion to be sterilized is exposed, the stored water control portion removes the ordinary water from the water discharge portion. After the water is supplied to the bacteria target portion, it is possible to control the supply of the sterilization water from the nozzle to the bacteria removal target portion in a state where the trap portion is stopped in the partially drained posture. Toilet bowl.   The nozzle is capable of supplying the sterilizing water and the normal water containing no sterilizing component to the sterilization target portion, and the reservoir control unit supplies the normal water to the sterilization target portion from the nozzle. The flush toilet according to claim 5, wherein the flush toilet can be controlled.

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