CN107854065B

CN107854065B - Bathroom

Info

Publication number: CN107854065B
Application number: CN201710859829.0A
Authority: CN
Inventors: 佐藤基和; 石井克典; 福冨达也; 林训広; 芹泽大介
Original assignee: Toto Ltd
Current assignee: Toto Ltd
Priority date: 2016-09-21
Filing date: 2017-09-21
Publication date: 2020-09-04
Anticipated expiration: 2037-09-21
Also published as: CN107854065A

Abstract

The invention provides a bathroom capable of inhibiting mold generation on a bathroom floor. The present invention is a bathroom, comprising: a cleaning unit having a nozzle portion for spraying cleaning water into the bathroom; and a control unit for controlling the cleaning unit. The control unit controls the cleaning unit to perform a black mold inhibiting step of spilling the cleaning water so that keratin, which causes black mold, remaining on the bathroom floor is drained from the bathroom floor to the drain opening. In the black mold suppressing step, the washing water sprayed from the nozzle portion removes keratin on the bathroom floor and flows so that the removed keratin is not accumulated in the corner between the periphery of the bathroom floor and the bathroom wall.

Description

Bathroom

Technical Field

The invention relates to a bathroom, which is used for cleaning the floor of the bathroom.

Background

In stains on bathroom floors in bathrooms, residues of toilet soaps, shampoos and the like used for washing the human body, dirt (proteins, carbohydrates, oils, salts and the like) generated from the human body, and the like are present.

The present applicant has already developed a cleaning device for removing the above-mentioned stains and suppressing the generation of mold on the floor of the bathroom, and has already made a patent (patent document 1).

In the technique disclosed in patent document 1, a sterilizing water having an antibacterial metal is discharged to a bathroom floor to sterilize the bathroom floor (bacteriostatic step).

Patent document 1: japanese patent No. 4035662 publication

Disclosure of Invention

The present inventors have studied for a long time a bathroom technology which is the most demanding of customers and can suppress the generation of mold on the floor of a bathroom.

The technique disclosed in patent document 1 is actually commercialized by the present applicant as a technique for sterilizing Ag in a drain opening of a bathroom. However, since the Ag sterilized water has a property of being effective slowly to the bathroom floor while a high sterilizing effect to the drain opening can be expected, the Ag sterilized water cannot exhibit a sufficient effect, and is not sufficient from the viewpoint of measures against mold to the bathroom floor. Specifically, the Ag disinfectant water has a low quick-acting property, and therefore has a problem that it flows from the floor of the bath room to the drain opening before it attacks mold.

If a large amount of the Ag sterilizing water continuously flows on the floor of the bath room, the effect can be expected because the mold is attacked for a long time. However, in this case, a problem in terms of water saving remains.

The present inventors have studied the application of a technique using hypochlorous acid in order to improve the effect of mold on the floor of a bath room, which is highly demanded by customers. The technique using hypochlorous acid is expected to have an effect in attacking mold because quick action is expected, but the following problems need to be solved.

First, since the bathroom has a certain area and the water discharge distance is long to some extent, the hypochlorous acid concentration is "decayed". That is, in order to expect a sufficient effect of attack on mold after water spraying, it is considered that hypochlorous acid having a relatively high concentration is used in consideration of the attenuated portion.

However, the chlorine component contained in tap water is limited, and it is not easy to increase the concentration. Although a method of adding chlorine or the like is also conceivable, various troubles are caused in the flow of adding chlorine, and it is not practical.

Even if the concentration is increased, if the water is sprayed (spouted) in a state where the flow rate is reduced, there is a possibility that corrosion resistance measures for the equipment are required to be taken along with the increase in the cleaning time.

As a result of long-term studies, the present inventors have found that a practically excellent cleaning technique is capable of suitably and significantly reducing mold generation on a bathroom floor without using a high concentration technique such as addition of chlorine even when water containing hypochlorous acid is used for cleaning the bathroom floor.

That is, the present inventors have found that, unlike the conventional method, the bactericidal action of killing black mold after generation is relatively effective, but that it is effective in inhibiting or killing substances that cause the growth of black mold that may be generated in a bathroom. Instead of the after-production countermeasure technique, a practically excellent bathroom cleaning technique using the prior countermeasure technique for removing the production source has been found.

Specifically, it has been found that it is effective to take measures against black mold by removing cutin, which causes black mold, from the floor surface.

Fig. 33 is a graph showing the experimental results for explaining that the remaining cutin is a main cause of black mold generation. This is an experiment result in which 2500cfu/ml of a mold spore (Cladosporium spp.) was added after mixing each stain component at 500ppm and the mixture was cultured at 25 ℃ in an 80% Rh atmosphere for 7 days. As shown in fig. 33, significant production of black mold was confirmed in the results of the culture of cutin.

The present invention has been made based on the above knowledge. The invention aims to provide a bathroom, which can inhibit mildew from generating on a bathroom floor of the bathroom.

The present invention is a bathroom, comprising: a bath room floor; a drain outlet for draining residual water on the floor of the bath room; a bathroom wall upstanding from a periphery of the bathroom floor; a washing unit for spraying washing water to the floor of the bath room; and a control unit for controlling the cleaning unit, wherein the control unit controls the cleaning unit so as to perform a mold black suppression step of discharging keratin remaining on the bathroom floor from the bathroom floor to the drain opening, the mold black suppression step including: a step 1 of spraying the flowing water obtained by peeling off the keratin from the floor of the bath room; and a 2 nd flowing water sprinkling step of conveying the peeled cutin to the water outlet.

According to the present invention, by performing the black mold inhibition step of removing cutin which is a cause of black mold remaining on the floor of the bath room, the cutin on the floor of the bath room can be significantly reduced, and further, the generation of mold on the floor of the bath room can be significantly inhibited.

When the black mold suppressing step is performed, it is important to peel off the keratin remaining on the floor of the bath room and remove the keratin without remaining in the drain.

When only water is sprayed to remove the cutin, it is important that the cutin does not adhere to the floor surface of the bathroom floor again and reach the drain opening.

Further, even if water is sprayed to remove cutin from the bathroom floor and cutin can be removed, the washing water sprayed from the nozzle portion is sprayed in one direction, and therefore reaches a corner portion between the bathroom floor and the bathroom wall on the extension of the one direction, and cutin which is not easily peeled off is likely to collide with the corner portion and be accumulated at the corner portion, and even if it is possible to suppress the occurrence of black mold on the bathroom floor, there is a problem that the occurrence of black mold at the corner portion cannot be sufficiently suppressed.

According to the present invention, the washing water sprayed from the nozzle portion in the mold black inhibition step removes cutin from the bathroom floor and flows so as not to accumulate the removed cutin at the corner between the bathroom floor periphery and the bathroom wall, and therefore mold black can be inhibited from occurring not only on the bathroom floor but also at the corner.

Preferably, the control unit performs a reattachment prevention watering step of controlling the washing unit to further spill the washing water for preventing the cutin removed from the bathroom floor from reattaching to the bathroom floor.

Even if the keratin is peeled off by the spilled washing water, the keratin contained in the washing water may adhere to the floor of the bath room again in the course of flowing to the drain opening.

Therefore, the reattachment preventing step is a step of surely preventing the reattachment of the cutin and surely removing the cutin from the floor of the bath room by performing the reattachment preventing water spraying step, and the reattachment preventing water spraying step is a step of further spraying the washing water for preventing the cutin removed from the floor of the bath room from reattaching to the floor of the bath room.

Preferably, the washing water sprayed from the nozzle portion in the mold black inhibition step includes: (ii) flowing water No. 1 for initially contacting cutin remaining on the bathroom floor to strip the cutin from the bathroom floor; and 2 nd flowing water for conveying the cutin peeled from the bathroom floor to the water outlet.

Even if the keratin is peeled off by the spilled washing water, the keratin contained in the washing water is easily reattached to the floor of the bath room particularly in the vicinity of the drain port or the like due to the reduction in the washing water level accompanying the diffusion of the washing water in the course of flowing to the drain port.

Therefore, it is effective to separately spill the 1 st flowing water and the 2 nd flowing water, the 1 st flowing water is a water flow for peeling off cutin from the floor of the bathroom by first contacting the cutin remaining on the floor of the bathroom, and the 2 nd flowing water is a water flow for transporting the cutin peeled off from the floor of the bathroom to the drain outlet.

If reattachment of cutin to the floor of a bath room caused by the reduction of the water level accompanying the diffusion of cleaning water during the flowing process to the water outlet is restrained only by the No. 1 flowing water for peeling off the cutin, a large amount of cleaning water needs to be sprayed at one time, thereby preventing the reattachment of the cutin caused by the reduction of the water level.

When the No. 1 running water and the No. 2 running water are separated, the No. 1 running water is sprinkled for peeling off cutin, and the No. 2 running water is sprinkled for conveying the peeled cutin, the cutin can be removed from the floor of the bathroom with less washing water amount, and the cutin can be reliably discharged to the water outlet.

Preferably, the 1 st flowing water flows on a predetermined portion of the floor of the bath room, and the 2 nd flowing water flows on the predetermined portion after a predetermined time elapses from when the 1 st flowing water reaches the predetermined portion.

If the No. 1 flowing water and the No. 2 flowing water are sprayed simultaneously, the aim of separately controlling the two water sprays is not effective, and even if the time between the two water sprays is too long, the keratin is dried and easily reattached, which is not preferable.

Thus, it is effective to appropriately control the time between two sprinkles. For example, if the 1 st flowing water flows on a predetermined portion of the floor of the bath room and the 2 nd flowing water flows on the predetermined portion after a predetermined time has elapsed from the arrival of the 1 st flowing water at the predetermined portion, the keratin reattachment can be reliably prevented with a small amount of washing water by a simple structure.

Preferably, at the predetermined portion, a flow rate of the 2 nd flowing water toward the drain opening is higher than a flow rate of the 1 st flowing water toward the drain opening, and the 2 nd flowing water joins the 1 st flowing water until reaching the drain opening.

The water level is lowered by the diffusion of the No. 1 flowing water accompanying the approach of the outlet, and the cutin is easily reattached.

Therefore, it is preferable that the time required for the 1 st flowing water to reach the predetermined position and the time required for the 2 nd flowing water to reach the predetermined position are controlled to be constant in each part of the floor of the bath room, and that the time required for the water to reach the drain opening is shortened by approaching the drain opening, and the water to reach the drain opening is merged.

This makes it possible to effectively compensate for the drop in water level caused by the diffusion of the 1 st flowing water, and to more reliably prevent the reattachment of the cutin.

Preferably, the nozzle portion is configured to rotate around an axis perpendicular to the floor of the bath room, and the control unit controls the rotation of the nozzle portion to adjust a flow rate of the 2 nd flowing water to the drain opening at the predetermined portion to be higher than a flow rate of the 1 st flowing water to the drain opening.

In this case, for example, by controlling the feed rate of the rotation of the nozzle section, the flow rate of the 1 st flow water to the drain opening and/or the flow rate of the 2 nd flow water to the drain opening can be controlled relatively easily, and the lag time between the two and the position at which the two join each other can be adjusted relatively easily.

Preferably, the control unit controls the rotation of the nozzle unit such that the rotation speed of the nozzle unit is lower when the flush water is applied to a region distant from the nozzle unit than when the flush water is applied to a region close to the nozzle unit.

Since the water potential of the spilled washing water decreases as the sprinkling distance increases, the speed of the washing water flowing toward the drain port also decreases.

To compensate for this tendency, the number of revolutions is reduced as the distance between the water jets is increased, and the amount of water jetted is increased, whereby the optimal water jetting control for the 1 st flow water and the optimal water jetting control for the 2 nd flow water can be achieved by simple control.

Drawings

Fig. 1 is a schematic perspective view showing an example of a bathroom provided with a bathroom cleaning device according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of the vicinity of the table of fig. 1 in an enlarged view.

Fig. 3 is a schematic view illustrating a bathroom cleaning device according to an embodiment of the present invention.

Fig. 4 is a front view and a sectional view illustrating a detailed structure of the nozzle portion of fig. 1.

Fig. 5 is a perspective view, a side view, and a plan view illustrating a detailed structure of the nozzle portion of fig. 1.

Fig. 6 is a schematic view showing a control flow of the bathroom cleaning device according to the embodiment of the present invention.

Fig. 7 is a schematic view showing an example of a rotational operation of the nozzle portion shown in fig. 1.

FIG. 8 is a plan view showing a bathroom floor corresponding to the mold black suppressing step.

Fig. 9 is a schematic diagram showing a time chart in the black mold suppressing step.

FIG. 10 is a plan view showing a bathroom floor corresponding to a pink mold suppressing step.

Fig. 11 is a schematic view showing a time chart in the pink mold inhibition step.

FIG. 12 is a plan view of the bath room floor showing the results of the experiment concerning the effect of the pink mold inhibition step.

Fig. 13 is a schematic view illustrating a relationship between a low-concentration sterilizing water generating unit and a removing device in a bathroom cleaning device according to an embodiment of the present invention, fig. 13(a) is a schematic perspective view, and fig. 13(b) is a schematic cross-sectional view.

Fig. 14 is a schematic diagram showing another configuration example of the low-concentration sterilizing water producing unit and the removing device, fig. 14(a) is a schematic perspective view, and fig. 14(b) is a schematic cross-sectional view.

Fig. 15 shows an alternative example 1 of the low-concentration sterilized water producing unit, which corresponds to fig. 3.

Fig. 16 shows an alternative example of the 2 nd embodiment of the low-concentration sterilizing water producing unit, which corresponds to fig. 3.

Fig. 17 shows a 1 st modification of the low-concentration sterilized water producing unit, which corresponds to fig. 3.

Fig. 18 is a plan view for explaining the effect of local sterilization.

FIG. 19 is a graph showing the relationship between the sterilization time and the water spray amount of Mucor and Micromyces pink generated in a bathroom at each effective chlorine concentration.

FIG. 20 is a graph showing concentration decay after sprinkling water at each effective chlorine concentration.

FIG. 21 is a graph showing the killing time of Methylobacterium at each effective chlorine concentration.

Fig. 22 is a schematic view showing the flow state of the 1 st flowing water (1 st water wave) and the 2 nd flowing water (2 nd water wave) according to the present embodiment, fig. 22(a) is a schematic plan view, and fig. 22(b) to 22(d) are schematic cross-sectional views.

Fig. 23 is a graph summarizing an example of appropriate watering conditions.

Fig. 24 is a schematic view showing an example of the water application range of tap water and low-concentration sterilizing water.

Fig. 25 is a schematic view showing an example of a water application range of the low-concentration sterilizing water.

Fig. 26 is a schematic diagram showing an example of temporary stop control of the front surface of the drain port.

Fig. 27 is a schematic view showing a time chart in the mold black suppressing step using the temporary stop control in front of the drain port.

Fig. 28 is a schematic view showing a time chart in a pink mold suppressing step using the temporary stop control of the front surface of the drain opening.

Fig. 29 is a schematic diagram showing a state in which water waves transport keratin, fig. 29(a) is a schematic plan view, and fig. 29(b) is a schematic cross-sectional view.

Fig. 30 is a schematic diagram showing a state in which cutin is likely to reattach due to a decrease in water level.

FIG. 31 is a schematic view showing the state of the washing water joined to the 1 st and 2 nd water-binding portions.

FIG. 32 is a schematic view showing a state where washing water having further condensed on the 3 rd water condensation portion merges together.

Fig. 33 is a graph showing the experimental results for explaining that residual cutin is a main cause of black mold generation.

Description of the symbols

10 a-a nozzle portion; 10 x-axis of rotation; 11 a-nozzle opening No. 1; 12 a-nozzle No. 2 opening; 13-a water reservoir; 14 a-1 st water reservoir; 14 b-2 nd water reservoir; 17-an electric motor; 20-a low-concentration sterilized water generating part; 30-control part (sprinkling control part, rotation control part); 30 a-an execution condition changing unit; 30 b-a manual change unit; 35-an operating part; 51-a water supply pipe; 52-hot water supply pipe; 53a, 53 b-filters; 54 a-1 st solenoid valve; 54 b-solenoid 2; 55-pressure regulating valve; 56-check valve; 57-vacuum break valve; 100-a cleaning device; 500-bathroom; 510-a bath; 520-bath room floor; 521-a water outlet; 530-a table; 531-top plate; 532-lower cover; 541 ~ 544-1 st to 4 th walls.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals as much as possible, and redundant description is omitted for easy understanding.

An example of a bathroom

First, an example of a bathroom in which the bathroom cleaning device 100 according to the embodiment of the present invention is installed will be described. Fig. 1 is a schematic perspective view showing an example of such a bathroom. Also, the bathroom may be a shower stall without a bath tub.

As shown in fig. 1, a bathroom 500 provided with the bathroom cleaning device 100 includes a 1 st wall 541, a 2 nd wall 542, a 3 rd wall 543, and a 4 th wall 544, which are arranged corresponding to 4 side surfaces of a substantially rectangular parallelepiped. The 2 nd wall 542 is opposed to the 1 st wall 541, and the 4 th wall 544 is opposed to the 3 rd wall 543. The 1 st wall 541 and the 2 nd wall 542 are connected to the 3 rd wall 543 and the 4 th wall 544, respectively.

For convenience of explanation, in the present specification, the direction from the 2 nd wall 542 (the wall on the back side in fig. 1) toward the 1 st wall 541 (the wall on the front side in fig. 1) is referred to as "front", and the opposite direction is referred to as "rear". In addition, a direction perpendicular to the front-rear direction and the up-down direction is referred to as a lateral direction.

A bath 510 is provided on the 4 th wall 544 side, and a bathroom floor 520 (bathroom floor) is provided between the bath 510 and the 3 rd wall 543. That is, the bath 510 and the bath floor 520 both extend in a front-to-rear direction and are laterally aligned. The bath floor 520 is connected to a portion of wall 1 541 and a portion of wall 2 542 in addition to wall 3 543.

A drain 521 is provided in the bath room floor 520. The drain 521 is provided near the center of the bath floor 520 in the front-rear direction and at the end on the bath 510 side in the lateral direction of the bath floor 520. The bath room floor 520 is provided with a gentle (e.g., about 1 to 5 °) drainage slope (inclination) toward the drain opening 521. In addition, the surface of the bath floor 520 is subjected to a hydrophilic coating treatment.

A table 530 is provided on a part of the 2 nd wall 542 connected to the bath floor 520 (on the rear side of the bath room 500). A mirror, a water faucet, a shower hose, and the like are appropriately provided on the 2 nd wall 542 of the bathroom 500.

Fig. 2 is a schematic perspective view of the vicinity of the enlarged stage 530. As shown in fig. 2, the table 530 has a top plate 531 and a lower cover 532, and is disposed to be spaced upward from the bath floor 520. The table 530 has a substantially rectangular shape that is laterally long when viewed from above. The width of the table 530 in the front-rear direction of the bath room 500 is 80cm, and the width (length) of the table 530 in the lateral direction of the bath room 500 is substantially equal to the lateral width of the bath room floor 520.

Water channel of cleaning device for bathroom

Next, fig. 3 is a schematic view illustrating the bathroom cleaning device according to the embodiment of the present invention, and shows a state where the table 530 is viewed from the side. As shown in fig. 3, a bathroom cleaning device 100 according to the present embodiment (hereinafter simply referred to as "cleaning device 100" for convenience of explanation) includes: a nozzle part 10a protruding to the lower part of the table 530; and a control unit 30 (as will be described later, serving as both a watering control unit and a rotation control unit) housed inside the table 530.

As also shown in FIG. 2, the nozzle portion 10a is disposed below the table 530 at a position away from the bath floor 520. The nozzle portion 10a of the present embodiment is provided near the lateral center of the table 530. That is, the nozzle portion 10a is disposed near the lateral center of the bath floor 520.

Returning to fig. 3, a water supply pipe 51 and a hot water supply pipe 52 are provided outside the bathroom 500 (for example, behind the 2 nd wall 542). The water supply pipe 51 is connected to a tap water pipe not shown. Thereby, tap water is supplied from the water supply pipe 51 to the cleaning device 100.

The 1 st filter 53a, the 1 st electromagnetic valve 54a, the 2 nd electromagnetic valve 54b, the pressure regulating valve 55, the vacuum break valve 57, the check valve 56, the sterilized water producing unit 20, the 2 nd filter 53b, and the control unit 30 are provided inside the table 530 (between the top plate 531 and the lower cover 532). The 1 st strainer 53a is connected to the water supply pipe 51, and the tap water flow path is branched into 2 downstream of the 1 st strainer 53 a.

Tap water (an example of water) is directly supplied to the nozzle portion 10a through the 1 st electromagnetic valve 54a in one flow path on the downstream side of the 1 st filter 53 a. Tap water is supplied to the nozzle portion 10a by opening the 1 st electromagnetic valve 54 a.

On the other flow path on the downstream side of the 1 st filter 53a, a 2 nd electromagnetic valve 54b, a pressure regulating valve 55, a vacuum break valve 57, a check valve 56, the low concentration sterilized water producing unit 20, and the 2 nd filter 53b are connected in this order from the upstream side, and the low concentration sterilized water is supplied to the nozzle unit 10 a.

The 1 st solenoid valve 54a and the 2 nd solenoid valve 54b perform an operation of opening the water flow path and an operation of closing the water flow path, respectively.

The pressure regulating valve 55 controls the pressure of the supplied tap water. This makes it possible to adjust the flow rate of tap water supplied to the low-concentration sterilized water producing unit 20 (an example of a sterilizing agent producing device), which will be described later, to a desired flow rate. The flow rate of the low-concentration sterilizing water supplied to the nozzle portion 10a is controlled by adjusting the flow rate of the tap water supplied to the low-concentration sterilizing water generating portion 20. (of course, the flow rate of tap water may be adjusted by using the 2 nd solenoid valve 54b instead of or in addition to the pressure regulating valve 55.)

The low-concentration sterilized water producing unit 20 is an electrolytic chamber (electrolytic cell) having an anode and a cathode. The low-concentration sterilized water producing unit 20 generates hypochlorous acid with a low concentration by applying a voltage between the anode and the cathode and electrolyzing tap water flowing between these electrodes. Since tap water contains chloride ions, hypochlorous acid is generated by electrolyzing the chloride ions.

The downstream part of the low-concentration sterilized water producing unit 20 of the present embodiment is a removing device 20b, and the hypochlorous acid produced in the hypochlorous acid producing tank 20a (an example of a sterilizing agent producing apparatus) which is the upstream part of the low-concentration sterilized water producing unit 20 kills methylobacterium in tap water to produce washing water containing no methylobacterium. The chlorine concentration of the washing water in the outlet region of the low-concentration sterilized water producing section 20 is 0.4 to 1.0ppm (the chlorine concentration of tap water is usually 0.1 to 0.3 ppm). Thus, the low-concentration sterilized water producing unit 20 produces low-concentration sterilized water (an example of washing water not containing methylobacterium) from tap water without complicating the flow path structure.

The low-concentration sterilizing water may be metal ion water (for example, water containing metal ions such as silver ions, copper ions, or zinc ions) or ozone-containing water. For example, when tap water is electrolyzed, acid radicals (H) are consumed on the cathode⁺) The pH value near the cathode rises. That is, alkaline water is generated in the vicinity of the cathode. On the other hand, the consumption of alkali (OH) on the anode^-) The pH near the anode decreases. That is, acidic water is generated in the vicinity of the anode. By changing the flow rate in the low-concentration sterilized water producing unit 20, the concentration of the component contained in the low-concentration sterilized water can be controlled. Needless to say, the low-concentration sterilized water producing unit 20 is not limited to the electrolytic cell.

At least a part of the

filters

53a and 53b, the

electromagnetic valves

54a and 54b, the pressure regulating valve 55, the vacuum break valve 57, the check valve 56, the low-concentration sterilized water producing unit 20, and the control unit 30 may be provided outside the table 530 or outside the bathroom 500. For example, as shown by a dotted line in fig. 1, the control section 30 may be provided outside the bathroom 500.

The 1 st electromagnetic valve 54a, the 2 nd electromagnetic valve 54b, the pressure regulating valve 55, and the low-concentration sterilized water producing unit 20 are appropriately controlled by the control unit 30 as a water spray control unit. This makes it possible to independently control the discharge of tap water (an example of water) from the nozzle section 10a and the discharge of low-concentration sterilizing water from the nozzle section 10 a.

Specifically, the 1 st solenoid valve 54a and the 2 nd solenoid valve 54b open and close the tap water flow path in response to a signal from the control unit 30. This controls the flow rate of the tap water supplied to the downstream side. The low-concentration sterilized water producing unit 20 switches the electrolysis chamber on/off in response to a signal from the control unit 30. In this way, the control unit 30 can control: the concentration of each constituent component in the low-concentration sterilized water; an instantaneous flow rate (flow rate per unit time) of the discharged washing water (tap water or low-concentration sterilizing water); and the total amount of water of the discharged washing water.

Detailed structure of nozzle part of cleaning device for bathroom

In the present embodiment, the position and posture of the nozzle portion 10a can be changed so that the shower area of the washing water (tap water or low-concentration sterilizing water) on the bath floor 520 is changed. Specifically, the nozzle portion 10a is rotationally driven by the electric motor 17. The electric motor 17 is constituted by a stepping motor, for example.

The electric motor 17 is controlled by a control unit 30 as a rotation control unit. Thus, the rotation angle and the rotation speed of the nozzle portion 10a are changed by controlling the electric motor 17 based on the signal from the control portion 30. Further, an operation unit 35 is connected to the control unit 30, and a user in the bathroom can perform an appropriate operation.

Fig. 4(a) is a front view illustrating a detailed structure of the nozzle unit according to the present embodiment, and fig. 4(b) is a cross-sectional view taken along line a-a of fig. 4 (a). As shown in fig. 4(a) and 4(b), the nozzle portion 10a of the present embodiment includes a 1 st water storage part 14a, a 2 nd water storage part 14b, a 1 st nozzle opening 11a, and a 2 nd nozzle opening 12 a.

The 1 st nozzle opening 11a is a hole communicating the inside and the outside of the 1 st water storage portion 14a, and the 2 nd nozzle opening 12a is a hole communicating the inside and the outside of the 2 nd water storage portion 14 b. Tap water passing through the 1 st solenoid valve 54a is supplied into the 1 st water storage part 14a and discharged from the 1 st nozzle opening 11 a. The low-concentration sterilizing water generated by the low-concentration sterilizing water generating unit 20 is supplied into the 2 nd water storage unit 14b and discharged from the 2 nd nozzle opening 12 a.

Naturally, the water storage part and the nozzle opening can be used in common for the tap water and the low-concentration sterilizing water. With such a configuration, although the nozzle portion 10a has a simple configuration, it is not possible to simultaneously spray both tap water and low-concentration sterilizing water.

Fig. 5(a) is a perspective view showing a state where low-concentration sterilizing water is discharged as washing water from the 2 nd nozzle opening 12a, and fig. 5(b) is a perspective view showing a state where tap water is discharged as washing water from the 1 st nozzle opening 11 a.

Fig. 5(c) and 5(d) are side views when the states shown in fig. 5(a) and 5(b) are viewed along the X direction in the figure, respectively. In this way, the cleaning water is spread in the Z direction perpendicular to the X direction in a fan shape or a triangular shape, and is discharged from the 1 st nozzle opening 11a and the 2 nd nozzle opening 12a, respectively.

Fig. 5(e) and 5(f) are plan views of the states shown in fig. 5(a) and 5(b) viewed along the Z direction, respectively. The spread of the discharged washing water is narrower when viewed in the Z direction than when viewed in the X direction. For example, when viewed in the Z direction, the 1 st nozzle opening 11a and the 2 nd nozzle opening 12a discharge the washing water in a linear shape. The diffusion of the discharged washing water can be adjusted by the shapes of the 1 st nozzle opening 11a and the 2 nd nozzle opening 12 a.

The nozzle portion 10a has a shaft 10x extending in the Z direction. In this example, the nozzle portion 10a is disposed such that the axis 10x is substantially parallel to the vertical direction (vertical direction). The nozzle portion 10a receives the driving force of the electric motor 17 and is rotatable about the shaft 10 x. In order to discharge the cleaning water from the nozzle 10a in a direction intersecting the axis 10x, the discharge area of the cleaning water can be changed by rotating the nozzle 10 a.

The term "jetting direction" in the present specification refers to a jetting direction of the washing water when viewed along the axis 10 x. That is, in this example, the "jetting direction" refers to the jetting direction of the washing water when viewed from above. When the washing water is dispersed in a plurality of directions and discharged when viewed from above, the center of the plurality of directions can be defined as the "water discharge direction". Alternatively, when the washing water is dispersed in a fan shape or a triangular shape around the

nozzle openings

11a and 12a and discharged as viewed from above, the direction bisecting the range of the fan shape or the triangular shape can be defined as the "water discharge direction".

Operation of the present embodiment

Next, an operation example (operation) of the cleaning apparatus 100 according to the present embodiment configured from the above results will be described. Fig. 6 is a schematic diagram showing a control flow of the cleaning apparatus 100 according to the present embodiment.

The control unit 30 of the cleaning apparatus 100 according to the present embodiment performs the mold black suppression step S1 in which tap water (an example of water) is sprinkled from the nozzle unit 10a onto the bathroom floor 520 as a sprinkling control unit, and keratin on the bathroom floor 520 is caused to flow to the drain opening 521 together with the tap water. Here, when the black mold suppressing step S1 is performed as the rotation control unit, the control unit 30 of the present embodiment controls the electric motor 17 to continuously spray tap water from the nozzle portion 10a onto the bath floor 520 while the nozzle portion 10a is rotating.

Further, the controller 30 of the present embodiment performs a pink mold suppression step S3 (although the low-concentration sterilized water in the present embodiment is merely an example of washing water targeting zero methylobacterium, if having a sterilization effect, it can obtain a secondary effect described later with reference to fig. 18) in which, after the black mold suppression step S1, low-concentration sterilized water, which is an example of washing water not containing methylobacterium, is sprinkled from the nozzle portion 10a onto the bathroom floor 520, and tap water on the bathroom floor 520 is caused to flow to the drain opening 521, thereby replacing the tap water on the bathroom floor 520 with the low-concentration sterilized water. Here, even when the control unit 30 of the present embodiment performs the pink mold suppression step S3 as the rotation control unit, the electric motor 17 is controlled to continuously spray the low concentration sterilizing water from the nozzle portion 10a onto the bath floor 520 while the nozzle portion 10a is rotating.

Fig. 7 is a schematic view showing an example of the rotational operation of the nozzle section 10a according to the present embodiment. In the arrows in fig. 7, when the nozzle unit 10 is rotated in the direction indicated by the broken line, the nozzle unit 10 does not discharge the washing water (tap water or low-concentration sterilizing water). Conversely, when the nozzle unit 10 is rotated in the direction indicated by the solid line, the nozzle unit 10 discharges cleaning water (tap water or low-concentration sterilizing water). The movement of the nozzle unit is not limited to the circular rotation movement shown in fig. 7, but may be a rectangular movement, a zigzag movement, or the like.

In the present embodiment, when the black mold suppressing step S1 is started, the nozzle portion 10a starts to rotate from a position (initial position P1) at which the nozzle portion 10a can direct the tap water substantially vertically toward the 2 nd wall 542 of the lower portion of the table 530.

As described later, in the present embodiment, after the pink mold suppressing step S3 is completed, the nozzle portion 10a is moved to the initial position P1. Naturally, since the nozzle portion 10a may be rotated after that, if necessary, the nozzle portion 10a is first moved to the above-described initial position P1 (origin finding step a 01). During this origin finding step a01, tap water discharge does not start.

Next, the nozzle portion 10a performs clockwise rotation operation in the counterclockwise direction (1 st clockwise rotation operation a02) from the initial position P1 (1 st position where the tap water can be applied to the drain opening 521 at one side position) to the position where the nozzle portion 10a applies the tap water to the drain opening 521 (2 nd position P2) as described above. During this time, the 1 st solenoid valve 54a is opened (turned on) to discharge tap water, and the first half of the mold black suppressing step S1 is performed.

As shown in fig. 8, while the nozzle portion 10a passes through the 4 th position P4 symmetrical to the 2 nd position P2 as viewed in the lateral direction during the forward rotation operation, as shown in fig. 9, the average rotation speed from the initial position P1 to the 4 th position P4 is higher than the average rotation speed from the 4 th position P4 to the 2 nd position P2 in the present embodiment.

Fig. 8 is a schematic plan view showing the area of the bath floor 520 in the mold release step S1 according to the control flow of the present embodiment. Fig. 9 is a schematic diagram showing a time chart in the black mold suppressing step S1.

As shown in fig. 9, the control unit 30 of the present embodiment performs control of alternately repeating a rotation state and a stop state of the electric motor 17 as a rotation control unit (thereby forming a water wave (pulse) of flowing water as described later with reference to fig. 29). Further, the control section 30 changes the average rotation speed of the nozzle section 10a by changing the length of time in the stopped state. As shown in fig. 9, the average rotation speed of the nozzle portion 10a is reduced by making the period from the 4 th position P4 to the 2 nd position P2 longer than the period from the 1 st position P1 to the 4 th position P4 in the stopped state. Accordingly, the average rotation speed of the nozzle section 10a can be changed very easily and with high accuracy.

In fig. 9 (and fig. 11 described later), in the graph showing "nozzle rotation", 1 "indicates that the nozzle 10a rotates counterclockwise (forward rotation operation)," 0 "indicates that the nozzle 10a stops rotating, and" -1 "indicates that the nozzle 10a rotates clockwise (reverse rotation operation).

Thereafter, the nozzle portion 10a continues the counterclockwise forward rotation operation (2 nd forward rotation operation a03) from the 2 nd position P2 (a position where the tap water can be applied to the drain opening 521) to the initial position P1. However, during this time, the 1 st electromagnetic valve 54a is in a closed state (off) and does not discharge tap water, and the rotation speed of the nozzle portion 10a also becomes high.

Thereafter, when the nozzle portion 10a reaches the initial position P1, the reverse rotation operation in the clockwise direction is started this time (1 st reverse rotation operation a 04). During this reverse rotation operation to return to the 2 nd position P2, the 1 st solenoid valve 54a is opened (turned on) to discharge tap water, and the second half of the mold black suppressing step S1 is performed.

Thereafter, the nozzle portion 10a continues the counter-rotation operation in the clockwise direction from the 2 nd position P2 (the position where the tap water can be applied to the drain opening 521) to the initial position P1 (the 2 nd counter-rotation operation a 05). During this time, the 1 st electromagnetic valve 54a is in a closed state (off) and does not discharge the tap water, and the rotation speed of the nozzle portion 10a is also high (water stopping step S2).

According to the mold black suppressing step S1, tap water is continuously sprayed from the nozzle portion 10a onto the bath floor 520 while the nozzle portion 10a is rotated, and thus the tap water becomes a water flow to which a force is applied in accordance with the rotation of the nozzle portion 10a, and the cutin on the bath floor 520 can be effectively washed away.

Further, according to the black mold suppressing step S1, tap water is discharged during the 1 st forward rotation a02 and the 1 st reverse rotation a04, but is not discharged during the 2 nd forward rotation a 03. That is, the discharged tap water continuously flows from the upstream area to the downstream area of the drainage gradient. This enables the keratin on the bath floor 520 to flow to the drain 521 more effectively together with the tap water.

Next, the nozzle portion 10a performs a clockwise rotation operation (alternate to the 1 st clockwise rotation operation a06) in the counterclockwise direction from the initial position P1 (the 1 st position where the low concentration sterilizing water can be applied to the one side position with respect to the drain opening 521) to the position where the nozzle portion 10a can apply the low concentration sterilizing water to the drain opening 521 (the 2 nd position P2). During this time, the 1 st solenoid valve 54a is returned to the closed state (off), the 2 nd solenoid valve 54b is opened (on), and the low-concentration sterilizing water is discharged, thereby performing the first half of the pink mold suppressing step S3.

As shown in fig. 10, while the nozzle portion 10a passes through the 4 th position P4 which is symmetrical to the 2 nd position P2 when viewed in the lateral direction during the forward rotation operation, as shown in fig. 11, in the (first half of) the pink mold suppression process S3 according to the present embodiment, the average rotation speed from the initial position P1 to the 4 th position P4 is higher than the average rotation speed from the 4 th position P4 to the 2 nd position P2, as in the (first half of) the black mold suppression process S1.

Fig. 10 is a schematic plan view of the bath room floor 520 area in the pink mold suppression step S3 implemented by the control flow of the present embodiment, and fig. 11 is a schematic time chart in the pink mold suppression step S3.

As shown in fig. 11, the control unit 30 of the present embodiment performs control in which the electric motor 17 alternately repeats a rotation state and a stop state as a rotation control unit. Further, the control section 30 changes the average rotation speed of the nozzle section 10a by changing the length of time in the stopped state. As shown in fig. 11, the average rotation speed of the nozzle portion 10a is reduced by making the period from the 4 th position P4 to the 2 nd position P2 longer than the period from the 1 st position P1 to the 4 th position P4 in the stopped state. Accordingly, the average rotation speed of the nozzle section 10a can be changed very easily and with high accuracy.

In the present embodiment, the average rotational speed when the black mold suppressing step S1 shown in fig. 9 is performed is different from the average rotational speed when the pink mold suppressing step S3 shown in fig. 11 is performed. That is, the most suitable average rotation speed of the nozzle section 10a is adopted for each of the black mold suppressing step S1 and the pink mold suppressing step S3.

In particular, in the present embodiment, the average rotational speed when the pink mold suppression step S3 is performed is smaller than the average rotational speed when the black mold suppression step S1 is performed. Accordingly, the pink mold suppressing step S3 (fig. 8 and 10 show the rotation time of the nozzle portion 10a in each area of the bath floor 520) is performed more slowly than the black mold suppressing step S1. Accordingly, for example, the sprinkling region (water spouting distance) of the low-concentration sterilizing water in the pink mold suppression step S3 can be easily set to be wider (longer) than the sprinkling region (water spouting distance) of the tap water in the black mold suppression step S1. In this case, tap water spilled on the bathroom floor 520 can be more reliably replaced with low-concentration sterilizing water. Such an example will be described later with reference to fig. 24 and 25.

Thereafter, the nozzle portion 10a continues clockwise rotation (alternate to the 2 nd clockwise rotation a07) from the 2 nd position P2 (the position where the low-concentration sterilizing water can be applied to the drain opening 521) to the initial position P1. However, during this time, the 2 nd electromagnetic valve 54b is in the closed state (off) and does not discharge the low-concentration sterilizing water, and the rotation speed of the nozzle portion 10a also becomes high.

Thereafter, when the nozzle portion 10a reaches the initial position P1, the clockwise reverse rotation operation (alternate 1 st reverse rotation operation a08) is started. During this reverse rotation operation to return to the 2 nd position P2, the 2 nd electromagnetic valve 54b is opened (turned on) to discharge the low-concentration sterilizing water, and the second half of the pink mold suppression step S3 is performed.

Thereafter, the nozzle portion 10a of the present embodiment may temporarily stop at the 2 nd position P2 (a position toward the drain port 521 where the low-concentration sterilized water can be applied), and concentrate the low-concentration sterilized water to replace the tap water at the drain port 521. The temporary stop time is, for example, 50 seconds.

Thereafter, the nozzle portion 10a continues the counter-rotation operation in the clockwise direction from the 2 nd position P2 (the position where the low-concentration sterilizing water can be applied to the drain opening 521) to the initial position P1 (the 2 nd counter-rotation operation a 09). During this time, the 2 nd electromagnetic valve 54b is in the closed state (off) and does not discharge the tap water, and the rotation speed of the nozzle portion 10a is also high (water stopping step S4).

According to the pink mold suppression step S3 performed by the control flow described above, since the low-concentration sterilized water is continuously sprayed from the nozzle portion 10a onto the bath floor 520 while the nozzle portion 10a is rotating, the low-concentration sterilized water becomes a water flow to which a force is applied in accordance with the rotation of the nozzle portion 10a, and tap water on the bath floor 520 can be effectively flushed away.

In addition, according to the pink mold suppression step S3 performed by the control flow, the low-concentration bactericidal water is discharged during the alternate 1 st forward rotation a06 and the alternate 1 st reverse rotation a08, and the low-concentration bactericidal water is not discharged during the alternate 2 nd forward rotation a 07. That is, the discharged low-concentration sterilizing water continuously drips from the upstream area to the downstream area of the drainage slope. Thus, since the tap water on the bath floor 520 can be more effectively flowed to the drain 521, the tap water on the bath floor 520 can be more effectively replaced with the low concentration sterilizing water.

FIG. 12 shows the actual experimental results of the area of the bath floor 520 where only the mold growth inhibiting step S1 was repeatedly performed after the bather had taken a bath for 1 month and the area of the bath floor 520 where only the mold growth inhibiting step S3 was performed after the mold growth inhibiting step S1 was performed. In the area of the bath floor 520 where only the mold growth inhibition step S1 was performed, although the remaining amount of keratin was almost zero, no mold growth was observed, but pink mold growth was observed. On the other hand, in the area of the bath room floor 520 in which the mold pink suppression step S3 was performed after the black mold suppression step S1 was performed, the remaining amount of cutin was almost zero, and the generation of black mold and the generation of mold pink were not observed.

As described above, according to the present embodiment, after the black mold suppressing step S1 in which tap water (an example of water) is sprinkled to remove cutin on the bathroom floor 520, the pink mold suppressing step S3 in which tap water on the bathroom floor 520 is replaced with low-concentration sterilized water by sprinkling low-concentration sterilized water to reduce the amount of methylobacterium can be performed, thereby significantly reducing the amount of methylobacterium remaining on the bathroom floor 520. This effectively suppresses the generation of slime on the bath floor 520.

In addition, according to the present embodiment, as shown in fig. 9, the average rotation speed of the nozzle portion 10a is small and the amount of tap water sprayed per unit area increases during the rotation from the 4 th position P4 to the 2 nd position P2. This corresponds to a case where organic matter such as dirt generated from a human body remains more in the area of the bath floor 520 (relatively distant area from the nozzle portion 10a) from which tap water is spilt during rotation from the 4 th position P4 to the 2 nd position P2 than in the area of the bath floor 520 (relatively close area to the nozzle portion 10a) from which tap water is spilt during rotation from the 1 st position P1 to the 4 th position P4. In this way, in an area where organic matter, particularly keratin, has a high tendency to remain (or a large amount of remaining), the amount of water sprayed per unit area, the amount of water sprayed per unit time, or the total amount of water is increased, thereby more effectively suppressing the generation of black mold on the bathroom floor 520.

Further, according to the present embodiment, as shown in fig. 11, the average rotation speed of the nozzle portion 10a is small and the amount of low-concentration sterilizing water sprayed per unit area increases during the rotation from the 4 th position P4 to the 2 nd position P2. This corresponds to the case where a greater amount of tap water is sprayed per unit area during rotation from the 4 th position P4 to the 2 nd position P2 than during rotation from the 1 st position P1 to the 4 th position P4. In this way, in an area where the amount of spread of tap water is large, by increasing the amount of spread of low-concentration sterilizing water per unit area, increasing the amount of spread of low-concentration sterilizing water per unit time, or increasing the total amount of low-concentration sterilizing water, it is possible to more effectively suppress the generation of slime on the bathroom floor 520.

Further, the control unit 30 of the present embodiment can change the time for which tap water or low-concentration sterilizing water is sprayed from the nozzle portion 10a onto the bath room floor 520 by controlling the rotation speed of the nozzle portion 10a when the black mold suppressing step S1 is performed and/or when the pink mold suppressing step S3 is performed. Thus, the black mold suppressing step S1 and/or the pink mold suppressing step S3 can be performed under a fine control condition for each area of the bath floor 520. The cleaning device 100 of the present embodiment has the water spray time changing function, which is effective in achieving a desired water spray amount when the water supply pressure of tap water is low (the water supply amount per unit time is small).

Effects of the present embodiment

As described above, the cleaning apparatus 100 according to the present embodiment is a bathroom floor cleaning apparatus for cleaning a bathroom floor 520 having a drain opening 521 in addition to a bathroom constituting a bathroom 500, and includes: a nozzle part 10a as a washing unit for spraying washing water onto the bath room floor 520; and a control unit 30 for controlling the nozzle unit 10 a. The controller 30 controls the nozzle unit 10a to perform a black mold suppression step S1 and a pink mold suppression step S3, wherein the black mold suppression step S1 is a step of spraying the cleaning water so that the horny substances that cause black mold remaining on the bathroom floor 520 are discharged from the bathroom floor 520 to the drain opening 521, and the pink mold suppression step S3 is a step of spraying the cleaning water so that the residual water containing the methylobacterium remaining on the bathroom floor 520 is replaced with the cleaning water from which the methylobacterium has been removed.

According to the cleaning apparatus 100 of the present embodiment, the black mold suppressing step S1 and the pink mold suppressing step S3 are performed to significantly reduce cutin and methylobacterium on the bathroom floor 520 and to significantly suppress mold generation on the bathroom floor 520, the black mold suppressing step S1 is a step of removing cutin which causes black mold generation and remains on the bathroom floor 520, and the pink mold suppressing step S3 is a step of removing remaining water including methylobacterium which remains on the bathroom floor 520.

In particular, in the pink mold inhibition step S3, the residual water containing methylobacterium remaining on the bathroom floor 520 is replaced with low-concentration sterilized water from which methylobacterium have been removed, whereby the methylobacterium on the bathroom floor 520 can be significantly reduced without using high-concentration, quick-acting sterilized water. Further, since the small amount of methylobacterium is killed, not the sterilization in the bathroom 500, but the entire nutrient source is not killed or removed, the low concentration sterilized water sprinkled in the pink mold suppression step S3 does not have to be the conventionally conceivable high concentration, quick-acting sterilized water, and the running cost can be suppressed to a low level.

The cleaning apparatus 100 of the present embodiment is not a technology for dealing with the situation that sterilization is performed after mold or pink mold is generated, but a technology for dealing with the situation that these generation sources are eliminated in advance. When the types of mold generated in the bathroom 500 are black mold and pink mold, the cleaning device 100 according to the present embodiment can achieve a customer satisfaction of 99% or more by suppressing these types.

The present inventors have found (discovered) a substance that causes black mold and pink mold in bathroom 500. Namely, the present inventors have found the following: the cause of black mold is cutin (see fig. 33); and pink mold is generated due to trace amount of methylobacterium in tap water and proliferation on the floor of the bath room. Further, since the above-mentioned matters can be specified, a technique for removing the causative substances of mold and pink mold in advance without killing them after they are produced has been developed. Further, the present embodiment has been established as a cleaning technique that does not require high concentration of sterilizing water or sterilization for a long time.

In the present embodiment, tap water is sprinkled as the 1 st washing water for removing cutin from the bath floor 520 in the nigral mildew inhibition step S1, and low-concentration sterilized water is sprinkled as the 2 nd washing water for removing methylobacterium from the bath floor 520 in the pink mildew inhibition step S3, and the nigral mildew inhibition step S1 and the pink mildew inhibition step S3 are performed separately from each other in time.

This makes it possible to independently perform: the first washing water used in the black mold inhibition step S1 for washing by peeling off cutin from the floor surface is sprayed: and spilling of the 2 nd washing water in place of the 1 st washing water in the pink mold suppression step S3. For example, the former requires a certain water potential and water amount, while the latter does not require much water potential and water amount. In the latter case, when a treatment using a filter or a sterilizer for removing or killing methylobacterium is required, the conditions can be independently set when 2 kinds of washing water having different requirements are sprinkled.

In the present embodiment, the cleaning unit further includes a low-concentration sterilized water producing unit 20 as a removing device in the flow path upstream of the nozzle unit 10a in addition to the nozzle unit 10a, the nozzle unit 10a is configured to discharge tap water as the 1 st cleaning water and low-concentration sterilized water as the 2 nd cleaning water, and the low-concentration sterilized water producing unit 20 removes methylobacterium from the tap water. The No. 2 washing water is water in a state that before the water is spilled to the bath floor 520, the methylobacterium are removed and the methylobacterium are not present in the water.

Importantly, the cutin remaining on the bathroom floor 520 may be removed with water. In the case of water, the water potential and the amount of water required for exfoliating keratin can be easily ensured. This enables the cutin to be removed reliably at low cost. On the other hand, for removing methylobacterium, a large amount of 2 nd washing water as replacement water is required to reliably remove methylobacterium sprinkled over a wide floor surface. If the removal failure occurs, it causes pink mold to be generated. Accordingly, by providing a removing device in the flow path upstream of the nozzle portion 10a and removing the methylobacterium by the removing device before sprinkling, the residual water remaining in the bath floor 520 can be replaced with water in which the methylobacterium is not present. Thus, methylobacterium can be reliably removed, and the generation of pink mold can be prevented in a short time with a small amount of water.

As described above, the cleaning apparatus 100 according to the present embodiment establishes an extremely excellent practical bathroom cleaning technique capable of reliably preventing the generation of black mold or pink mold on the bathroom floor 520 at low cost in a short time.

In the present embodiment, the black mold suppressing step S1 is always performed first, and the pink mold suppressing step S3 is always performed later.

In the mold black inhibition step S1, inexpensive tap water was used as the 1 st washing water, and water containing methylobacterium was sprinkled. Therefore, if this is performed in a subsequent step, the cause of the pink mold is produced again. Accordingly, by spraying the 2 nd washing water after the black mold suppressing step S1 is performed, generation of black mold and pink mold can be reliably suppressed.

In the present embodiment, the control unit 300 controls the nozzle unit 10a as the cleaning unit to perform the water stopping step, which is a standing step for prohibiting the water from being sprayed, after the pink mold suppressing step S3.

Thus, since the washing water containing Methylobacterium is not spilled by mistake, the growth of Micromyces pink can be effectively suppressed.

In the present embodiment, the 2 nd washing water is water containing hypochlorous acid or water containing hypochlorous acid after the bactericidal concentration is reduced. The low-concentration sterilized water producing unit 20 has a hypochlorous acid producing tank 20a, and a removing device 20b is provided continuously to the hypochlorous acid producing tank 20 a. Since tap water passes through the removal device 20b, the hypochlorous acid generated in the hypochlorous acid generation tank 20a acts as a second cleaning water for removing methylobacterium due to the bactericidal action of the hypochlorous acid. The hypochlorous acid generating tank 20a generates hypochlorous acid by electrolyzing tap water, and the supply of electricity to the hypochlorous acid generating tank 20a is continued at least during the discharge of the 2 nd washing water from the nozzle portion 10 a.

From the viewpoint of the purpose of cleaning the bathroom 500, a technique of using water containing hypochlorous acid has been studied. However, in the conventional technical common knowledge, the hypochlorous acid concentration needs to be high in order to have a sufficient fungicidal effect after sprinkling water. Specifically, if the concentration is about hypochlorous acid generated from chlorine in tap water, the bactericidal action is low, and the bactericidal action (bactericidal power) is further reduced by the decrease in concentration during sprinkling (spitting), so that a special treatment for increasing the concentration is required, and the bactericidal treatment also requires a long time.

That is, hypochlorous acid having a low concentration may be used as the 2 nd washing water of the present embodiment. In addition, the cleaning water 2 of the present embodiment may be any cleaning water as long as methylobacterium is removed, and may be any cleaning water that loses its bactericidal activity after sprinkling water and becomes water only.

Further, since the removing device of the present embodiment is provided in the hypochlorous acid generation tank 20, the 2 nd washing water can be generated with an extremely simple configuration.

In this case, since the supply of electricity to the hypochlorous acid generation tank 20 is continued until the discharge of the 2 nd washing water from the nozzle portion 10a is completed, it is possible to reliably prevent the true water from being spilled, although the control is simple. Thus, the generation of pink mold due to false sprinkling of true water can be simply and reliably prevented.

Further, the bathroom 500 of the present embodiment includes: a bath room floor 520 which constitutes a bath room of the bath room 500 and has a drain opening 521; the above-described cleaning apparatus 100; a table 530 disposed at one side of the bath room 500; and bath walls 541 to 544 provided around the periphery of the bath 500, wherein the nozzle unit 10a as the cleaning unit is disposed on the side of the table 530, but the nozzle unit 10a as the cleaning unit may be configured such that the 1 st cleaning water and/or the 2 nd cleaning water is flush with the bath walls 541 to 544 located on the upstream side of the drain opening 521 in the drain flow flowing toward the drain opening 521 on the bath floor 520.

The floor part where horny substances and methylobacterium are most likely to remain is the position where a person has washed his/her body and is present on the table 530. By disposing the nozzle portion 10a as the cleaning device at this position, for example, when water for removing Methylobacterium with hypochlorous acid is used as the 2 nd cleaning water, the concentration of hypochlorous acid is sufficiently low even if the concentration is low because the concentration in the discharged water (sprinkled water) is low.

At this time, by the flow of the discharged water flowing to the water discharge opening 521, a high water potential can be provided in the vicinity of the water discharge opening 521, and the water potential can act to press keratin or the like into the water discharge opening 521. In general, in the vicinity of the drainage port 521, the water level is lowered by the diffusion of water, and thus, it may be difficult to remove the keratin due to the reattachment of the keratin or the like. In particular, when the nozzle portion 10a as the cleaning unit makes the 1 st cleaning water and/or the 2 nd cleaning water flush with the bath walls 541 to 433 on the upstream side of the drain opening 521 in the drain flow flowing toward the drain opening 521 on the bath floor 520, cutin can be more surely removed.

In addition, it is preferable to perform a hydrophilic coating treatment on the surface of the bath room floor 520. In this case, even if horny or methylobacterium adheres to the bathroom floor 520, the bathroom floor 520 has a high affinity for water, and therefore functions extremely effectively in removing horny or bacteria. That is, black mold inhibition (cutin removal) or pink mold inhibition (replacement with water containing no methylobacterium) can be rapidly and sufficiently achieved even with a small amount of washing water and a low washing water potential.

Preferably, a groove 522 extending in a direction non-parallel to the water absorption direction of the 1 st washing water and/or the 2 nd washing water is formed in the bath floor 520 (see fig. 29 (b)). At this time, when the spilled washing water collides with the bath floor 520 and flows on the bath floor 520, the washing water collides with the grooves 522 to form water waves (water pulses) in the vertical direction. Due to such turbulence of the water flow, horny and methylobacterium are easily peeled off from the bath floor 520. In addition, even when the washing water spreads and flows on the bath floor 520, the water waves prevent horny substances and methylobacterium from being attached to the floor again. Thus, even if the water potential and the water amount of the spilled washing water are small, cutin and methylobacterium can be reliably removed from the floor.

Preferably, the controller 300 controls the nozzle unit 10a as the cleaning unit to perform a water spray standby step of waiting for the discharge of the 1 st cleaning water to the drain opening 521 after the mold black suppressing step S1 and before the mold pink suppressing step S3. In this case, the amount of the 2 nd washing water required for replacing the 1 st washing water with the 2 nd washing water may be small.

When the cleaning device 100 of the present embodiment is used to clean the bathroom floor 520 of the bathroom 500, it is preferable to adopt a standard according to the use form of the user. Specifically, this is because if water is sprayed from the washing apparatus 100 against the will of the user, the water may collide with the person or the removal and replacement of the keratin may be affected by the collision. In addition, it is important to prevent splashing to the outside of the bathroom.

For example, the controller 300 preferably prohibits the black mold suppressing step S1 and/or the pink mold suppressing step S3 from being performed or performs an emergency stop under a predetermined condition. Specifically, for example, the controller 300 preferably prohibits the black mold suppression step S1 and/or the pink mold suppression step S3 from being performed or performs an emergency stop in response to a signal indicating the presence of the user in the bathroom 500. Alternatively, for example, the controller 300 preferably prohibits the black mold suppressing step S1 and/or the pink mold suppressing step S3 from being performed or performs an emergency stop in response to a signal indicating that the door of the bathroom 500 is opened.

Variation of sprinkling control

The cleaning apparatus 100 of the present embodiment is a bathroom floor cleaning apparatus for cleaning a bathroom floor 520 having a drain opening 521 in addition to a bathroom constituting a bathroom 500, and includes: a nozzle part 10a as a washing unit for spraying washing water onto the bath room floor 520; and a control unit 30 for controlling the nozzle unit 10 a. The controller 30 controls the nozzle unit 10a to perform a black mold suppression step S1 and a pink mold suppression step S3, wherein the black mold suppression step S1 is a step of spraying the cleaning water so that the horny substances that cause black mold remaining on the bathroom floor 520 are discharged from the bathroom floor 520 to the drain opening 521, and the pink mold suppression step S3 is a step of spraying the cleaning water so that the residual water containing the methylobacterium remaining on the bathroom floor 520 is replaced with the cleaning water from which the methylobacterium has been removed. The controller 300 is configured to change the water spray to the bath room floor 520 in the black mold suppression step S1 and the pink mold suppression step S3.

In the black mold suppressing step S1, it is important to peel off the keratin remaining on the bathroom floor 520 and discharge the keratin without remaining in the drain 521. When the cutin is removed by merely spraying water, it is important to swell the cutin and then peel it off, and it is preferable to increase the amount of water or the water potential.

On the other hand, in the pink mold inhibition step S3 in which washing water containing no methylobacterium is prepared and the water is spilled to replace the remaining water, if the removal of the methylobacterium is insufficient, the spilled methylobacterium causes the generation of pink mold. Therefore, higher removal performance is required. In addition, when the washing water sprinkled in the pink mold suppression step S3 does not have bactericidal properties or has a low bactericidal component concentration, the generated pink mold cannot be removed, and therefore, high precision is required for the removal performance of the methylobacterium before sprinkling.

Thus, there are different requirements in the 2 steps of the present embodiment, and for example, if the pink mold suppressing step S3 is performed with the amount and the water potential of the water sprayed in the black mold suppressing step S1, the performance of the removing unit is required to be extremely high in order to remove the methylobacterium with high accuracy before the water spraying.

In the present embodiment, based on the knowledge peculiar to the present inventors that swelling and exfoliation are not required in the pink mold inhibition step S3, the simple structure in which the water spray method is optimally changed satisfies the requirements of both steps at a high level, and improves the removal performance for methylobacterium.

The nozzle portion 10a as the cleaning unit is configured to use water as the cleaning water used in the black mold suppressing step S1, and the controller 30 performs the pink mold suppressing step S3 after performing the black mold suppressing step S1.

Here, the controller 30 preferably controls the nozzle unit 10a to spray water onto the bathroom floor 520 and the lower parts of the bathroom walls 541 to 544 standing around the bathroom floor 520 in both the black mold suppressing step S1 and the pink mold suppressing step S3, and more preferably, the spray position of the cleaning water from which methylobacterium is removed onto the lower parts of the bathroom walls 541 to 544 in the black mold suppressing step S3 is higher than the spray position of the tap water onto the lower parts of the bathroom walls 541 to 544 in the black mold suppressing step S1, and the spray position of the cleaning water from which methylobacterium is removed onto the lower parts of the bathroom walls 541 to 544 in the pink mold suppressing step S3 performed after the black mold suppressing step S1.

The present inventors have found that the majority of the cause of black mold generation in bathroom 500 is cutin, and have also found that water is also acceptable if cutin is removed. Therefore, it is preferable to perform the mold black suppressing step S1 with the cheapest and safe water such as tap water.

On the other hand, when the mold black inhibition step S1 is performed with water, it is also equivalent to sprinkling water so as to increase the number of methylobacterium in the water. Therefore, it is preferable that the black mold suppressing process S1 be performed before the pink mold suppressing process S3.

By adopting the simple control mode, the problem of inhibiting black mold by using water can be solved.

In addition, since keratin is generated when the user washes his/her body, keratin is likely to be accumulated on the edges of the bathroom walls 541 to 544 by the influence of a shower or the like. Therefore, by allowing the water spray in the mold black suppressing step S1 to reach the wall lower portion, the cutin on the wall side can be reliably removed.

On the other hand, if the Methylobacterium is spilled to the wall side, the possibility of pink mold generation at the wall side is also increased. Therefore, the water spray area in the pink mold suppression step S3 is set to a range larger than the water spray area in the black mold suppression step S1 so that the former includes the latter, i.e., the water is sprayed to a position higher than the bath walls 541 to 544 in the pink mold suppression step S3. This makes it possible to realize washing with inexpensive water with simple control, and provides an extremely useful effect in practice.

Preferably, the controller 30 controls the nozzle portion 10a as the cleaning unit so that the amount of water sprayed per unit time in the pink mold suppression step S3 is smaller than the amount of water sprayed per unit time in the black mold suppression step S1.

In the pink mold inhibition step S3, for example, water from which methylobacterium in the water before being sprinkled is removed is sprinkled, but the water does not need to have a function of swelling or peeling off the cutin attached to the floor surface. That is, in the pink mold suppressing step S3, the amount of water sprayed per unit time is sufficient even if it is small. Further, when the amount of water to be sprayed is small, it is easier to remove Methylobacterium before spraying water.

On the other hand, if the water spray amount (flow rate) in the pink mold suppression step S3 is increased, the replacement performance is improved, and the time required for replacement can be shortened. However, high production performance is required to ensure the production amount of washing water containing no methylobacterium.

In the pink mold control step S3, it is preferable to reduce the amount of water sprayed per unit time based on the knowledge of the amount of unnecessary water sprayed and the water potential. This makes it possible to construct a system that is inexpensive and that can reliably replace the residual water.

Preferably, the controller 30 controls the nozzle unit 10a as the cleaning unit to perform a sprinkling waiting step of stopping sprinkling after the black mold suppressing step S1 is performed and before the pink mold suppressing step S3 is performed.

In the mold black inhibition step S1, which is performed using water, for example, a large amount of water is sprinkled, leaving a large amount of residual water. In order to perfectly replace all of these with washing water not containing methylobacterium, it is necessary to produce a large amount of washing water not containing methylobacterium. Therefore, it is preferable to provide a standby step of waiting for the residual water remaining after the sprinkling in the mold blacking out step S1 to be discharged to the drain opening 521. This can further suppress the amount of washing water produced without methylobacterium, and can provide a more inexpensive and simple structure.

Preferably, the controller 30 controls the nozzle portion 10a, which is the cleaning unit, so that the water spray potential per unit time in the pink mold suppression step S3 is smaller than the water spray potential per unit time in the black mold suppression step S1.

Accordingly, the methylobacterium in the residual water in the bath floor 520 can be prevented from splashing to the bath walls 541 to 544 and the like in association with the water spray in the pink mold prevention step S3. This can prevent the residual water splashed to the bathroom walls 541-544 from splashing to the bathroom floor 520 which has been replaced later, and from generating pink mold on the bathroom floor 520.

Preferably, the control unit 30 controls the nozzle unit 10a as the cleaning unit so that the total amount of the sprayed water per unit area of the bath floor 520 in the pink mold suppression step S3 is larger than the total amount of the sprayed water per unit area of the bath floor 520 in the black mold suppression step S1.

In the bathroom 500, even if the water level is high at the water landing position of the shower, the water level is lowered by spreading on the floor surface of the bathroom 500 in the process of draining the water toward the drain opening 521, and the flow rate of the drained water is also lowered. Therefore, in the pink mold suppression step S3 (replacement process), the methylobacterium in the residual water is maintained in a state of adhering to the floor surface, and there is a risk of a replacement failure occurring. Therefore, in the pink mold suppression step S3 (replacement process), even when the amount of water sprayed per unit time is reduced, the amount of water sprayed per unit area of the floor surface of the bath room floor 520 is increased, thereby effectively preventing insufficient replacement.

Preferably, the controller 30 controls the nozzle unit 10a as the cleaning unit so that the total amount of the sprayed water in the pink mold suppression step S3 is larger than the total amount of the sprayed water in the black mold suppression step S1.

The control mode of generating washing water containing no methylobacterium slowly and accurately, spraying a small amount of water slowly, and increasing the total amount of water sprayed to the whole can prevent the generation of pink mold reliably at the lowest cost.

The nozzle 10a as the cleaning unit is provided on one side of the bathroom 500 and sequentially cleans the bathroom floor 520 while rotating, and the controller 30 is configured to control the rotation and the rotation speed of the nozzle 10a as the cleaning unit at the same time, and more preferably, the controller 30 controls the nozzle 10a so that the rotation speed of the nozzle 10a in the pink mold suppressing step S3 is smaller than the rotation speed of the nozzle 10a in the black mold suppressing step S1.

In other words, the water spray for cutin removal in the mold smut suppression step S1 is preferably such that a large amount of strong water is sprayed and the rotation speed of the nozzle portion 10a serving as the cleaning unit is increased to reliably prevent reattachment of cutin to the floor surface, which is likely to occur due to a decrease in the discharge water flow rate or the discharge water flow rate, and the cleaning water containing no bacteria in the mold pink suppression step S3 is preferably such that a small amount of cleaning water is slowly sprayed to prevent scattering, and the rotation speed of the cleaning unit is preferably low to prevent insufficient replacement due to a decrease in the water level due to a decrease in the water flow rate.

Corresponding to the change of the sprinkling control condition

The cleaning apparatus 100 of the present embodiment is a bathroom floor cleaning apparatus for cleaning a bathroom floor 520 having a drain opening 521 in addition to a bathroom constituting a bathroom 500, and includes: a nozzle part 10a as a washing unit for spraying washing water onto the bath room floor 520; and a control unit 30 for controlling the nozzle unit 10 a. The controller 30 controls the nozzle unit 10a to perform a black mold suppression step S1 and a pink mold suppression step S3, wherein the black mold suppression step S1 is a step of spraying the cleaning water so that the horny substances that cause black mold remaining on the bathroom floor 520 are discharged from the bathroom floor 520 to the drain opening 521, and the pink mold suppression step S3 is a step of spraying the cleaning water so that the residual water containing the methylobacterium remaining on the bathroom floor 520 is replaced with the cleaning water from which the methylobacterium has been removed.

The control unit 30 of the present embodiment further includes an execution condition changing unit 30a that changes sprinkling of water on the bath room floor 520 in at least one of the black mold suppressing step S1 and the pink mold suppressing step S3 according to a preset condition (see fig. 3).

When the present inventors developed a cleaning technique for inhibiting mold in bathroom 500, a technique for coping with the mold in advance can be obtained, instead of a technique for killing the mold that has been generated. This is a technique that can suppress mold generation for an extremely long time in a short time by using simple washing water such as water without using a high-concentration bactericide or the like.

When water, bacteria-removed water, or low-concentration sterilized water is used as cleaning water, if black mold or pink mold is produced, the cleaning water is spilled to prevent the growth of black mold or pink mold. Therefore, it is important to prevent the generation of black mold and pink mold.

More specifically, although water can basically remove keratin, when there is a large amount of keratin or when keratin dries and adheres to the floor surface, it is difficult to remove the keratin and the keratin may remain. For this reason, black mold is produced. In addition, if pink mold is generated, it is difficult to remove the pink mold with water because the pink mold is covered with mucous membrane, and therefore, it is necessary to deal with the pink mold with washing water having high bactericidal performance.

Therefore, it is preferable to provide the execution condition changing means 30a for setting conditions corresponding to the risk of mold occurrence in advance and finely changing the watering control in each of the steps S1 and S3 depending on the situation. Thus, compared with manual control or constant (fixed) control, the generation of mold and pink mold is successfully and dramatically suppressed.

For example, the preset condition is based on a standing time from the start of washing after bathing.

If the shelf life is long after bathing and before washing starts, the cutin becomes dry and the thin cutin adheres firmly to the floor surface. In addition, the methylobacterium in the water is also dried and adhered to the bath floor 520. In a state where keratin adheres to the bath floor 520, countermeasures for improving the removal performance of keratin need to be taken.

Therefore, for example, it is determined that the longer the standing time is, the more the drying progresses and the adhesion progresses, and the shorter the standing time is, the less adhesion progresses, and at the time of starting the washing, it is preferable to perform the sprinkling control (washing control) such as corresponding to the standing time. This can improve both water saving performance and removability.

Alternatively, the preset condition is a condition based on any one of bathroom temperature, humidity, and time period, for example.

If the temperature is higher, adhesion easily occurs because the keratin dries faster. In addition, if the humidity is high, mold and the like grow rapidly. The information on the temperature and humidity can be estimated based on information on the time (season) in addition to the measurement results of these. By controlling these conditions, it is possible to suppress the occurrence of mold and pink mold in the bathroom 500 for a long period of time, which are finally unpleasant.

Alternatively, for example, the preset condition is a condition based on the period of use of the bathroom 500.

Since a scar or a concave-convex portion is formed on the bath floor 520 by using the bath room for a long time, cutin and pink mold are easily adhered. In addition, the water drainage property is reduced due to adhesion of stains and aging of coating materials, and the like, so that there is a high possibility that cutin and pink mold are likely to remain on the floor surface. Accordingly, it is preferable to adopt the cleaning control according to the state of the bathroom 500 which changes due to aging. If the aging repair is performed according to the use period of the bathroom 500, the effect of the present invention can be improved with a simple structure and no trouble.

Alternatively, the preset condition is a condition based on the number of bathers, for example.

When the number of bathers increases, the amount of horny substances increases and the amount of water used increases, so that the number of remaining methylobacterium bacteria also increases. By adopting the washing control suitable for the number of bathers, the most suitable inhibition of black mold and pink mold can be realized on the basis of maintaining the water-saving performance.

Further, the condition changing means 30a is preferably configured to change, according to predetermined conditions, at least one of the time for performing the steps S1 and S3, the total amount of water sprayed per unit area of the washing water in the steps S1 and S3, the washing water potential in the steps S1 and S2, the water temperature of the washing water in the steps S1 and S3, and the hypochlorous acid concentration when the washing water in the steps S1 and S3 contains hypochlorous acid, in at least one of the black mold suppressing step S1 and the pink mold suppressing step S3.

When removing cutin and replacing with washing water containing no methylobacterium, at least one of the water amount, water potential, water temperature, and bactericidal concentration is changed according to the usage state of bathroom 500, and therefore, the washing intensity can be changed, and washing optimal to the state can be achieved.

In particular, the condition changing means 30a is preferably executed to change the total amount of water sprayed per unit area of the cleaning water in each of the steps S1 and S3 in both the black mold suppressing step S1 and the pink mold suppressing step S3 according to the preset conditions.

For example, as a measure for sticking to a floor surface by drying cutin or methylobacterium, it is preferable to cope with this by using water even if the cutin is swollen again, and it is preferable to increase the amount of water sprayed to replace with washing water not containing methylobacterium, thereby improving the reliability of replacement. Accordingly, the factors causing black mold and pink mold can be removed reliably at low cost by changing the total amount of water sprayed per unit area of the washing water in each of steps S1 and S3.

The controller 30 of the present embodiment further includes a manual change unit 30b that changes the water spray to the bath room floor 520 in at least one of the black mold suppressing step S1 and the pink mold suppressing step S3 according to the user input conditions (see fig. 3). The manual changing unit 30b is connected to the operation unit 35 (see fig. 1).

The bath floor 520 can maintain a "clean state" for a long time even by the automatic control based on the preset conditions as described above. However, if the manual changing means 30b is provided, which can manually adjust the control content in accordance with the input conditions of the user, the satisfaction and the ease of use of the user can be further improved so that the user can meet the demand that each person in the "clean state" should have an evaluation value, a variation (severity) in the use state, a visitor or the like should be in a "clean state" more than usual.

Preferably, the control unit 30 is capable of performing both pre-response control consisting of alternate water sprinkles for removing cutin and generating water not containing methylobacterium and sprinkling the water, and post-response control for killing mold or pink mold generated on the floor surface of the bathroom floor 520 as post-response.

By providing not only the pre-response control but also the existing type of post-response control, the "clean state" of the bathroom floor 520 of the bathroom 500 can be maintained for a long time more reliably, and the labor and time for cleaning can be considerably reduced, the pre-response control is a control for maintaining the "clean state" of the bathroom floor 520 of the bathroom 500 for a long time by removing the cause of the occurrence of mold or pink mold, and the existing type of post-response control can also respond to the occurrence of mold or pink mold.

In this case, the control unit 30 preferably executes the preliminary response control in a predetermined 1 st cycle and the post-response control in a predetermined 2 nd cycle longer than the 1 st cycle.

By optimizing the frequencies of the pre-response control and the post-response control in this manner, the "clean state" can be maintained more reliably for a long time while optimizing the running cost.

Preferably, the control unit 30 is capable of arbitrarily performing the post-processing control at irregular intervals according to the input condition of the user as follows.

The bath floor 520 can maintain a "clean state" for a long time even by automatic control based on the preset conditions as described above. However, it is difficult to reliably prevent mold from being generated in any situation. For example, pink mold is generated when mold is produced due to accumulation of nutrients other than cutin, when methylobacterium splashes, or when water other than replacement water is spilled after replacement. When black mold and pink mold had been produced, these could not be removed by water, washing water containing no methylobacterium. Thus, for example, if a manual mode is provided for cleaning to improve the bactericidal performance, the function of maintaining the "clean state" for a long time can be provided, and the function of killing the mold and the like that have been generated can be provided, thereby further improving the satisfaction of the user.

Effect of the pink mold inhibition step

The cleaning apparatus 100 of the present embodiment is a bathroom floor cleaning apparatus for cleaning a bathroom floor 520 having a drain opening 521 in addition to a bathroom constituting a bathroom 500, and includes: a nozzle part 10a as a washing unit for spraying washing water onto the bath room floor 520; and a control unit 30 for controlling the nozzle unit 10 a. The controller 30 controls the nozzle unit 10a to perform the pink mold suppression step S3, and the pink mold suppression step S3 is a step of spilling the washing water so that the residual water containing methylobacterium remaining in the bath room floor 520 is replaced with the washing water from which methylobacterium has been removed.

According to the present embodiment, the pink mold inhibiting step S3 of removing the residual water containing methylobacterium remaining on the bathroom floor 520 is performed, whereby bacteria, particularly methylobacterium, on the bathroom floor 520 can be significantly reduced, and further, the generation of mold on the bathroom floor 520 can be significantly inhibited.

In particular, in the pink mold inhibition step S3, the residual water containing methylobacterium remaining in the bathroom floor 520 is replaced with washing water produced by removing methylobacterium in tap water and not containing methylobacterium, whereby the methylobacterium on the bathroom floor 520 can be significantly reduced without using high-concentration, quick-acting sterilizing water. Further, since the washing water sprayed in the pink mold inhibition step S3 does not need to be a conventionally conceivable high-concentration, quick-acting sterilizing water because only a trace amount of methylobacterium is killed, not all of the nutrient sources are killed or removed, and the running cost can be kept low.

In the present embodiment, it can be said that the generation source is eliminated beforehand, not the technique of dealing with the post-occurrence of sterilization after the generation of pink mold. With regard to pink mold generated in the bathroom 500, the cleaning device 100 according to the present embodiment can achieve a customer satisfaction of 99% or more by suppressing the pink mold.

The present inventors found (discovered) a substance that causes pink mold in the bathroom 500. That is, the present inventors have found that the generation of pink mold is caused by a trace amount of methylobacterium in tap water and that the pink mold is generated by the proliferation thereof on the bath room floor 520. Further, since the above-mentioned contents can be specified, a technique of removing a causative substance of the generation of the pink mold in advance, instead of killing the pink mold after the generation of the pink mold, has been developed. The cleaning apparatus 100 of the present embodiment is established as a cleaning technique that does not require high concentration of sterilizing water or long-term sterilization.

The cleaning unit further includes a low-concentration sterilized water producing unit 20 in a flow path upstream of the nozzle unit 10a in addition to the nozzle unit 10a, the nozzle unit 10a discharges tap water as 1 st cleaning water and low-concentration sterilized water as 2 nd cleaning water, and the low-concentration sterilized water producing unit 20 includes a removing device 20b that removes methylobacterium from the tap water. The No. 2 washing water is water in a state that before the water is spilled to the bath floor 520, the methylobacterium are removed and the methylobacterium are not present in the water.

To kill the methylobacterium in the water sprayed on the wider bathroom floor 520, a large amount of sterilizing water is required to reliably attack the methylobacterium. In addition, the occurrence of the attack failure causes the generation of pink mold. Accordingly, the methylobacterium can be reliably removed by providing a removing device in the flow path upstream of the nozzle portion 10a, removing the methylobacterium by the removing device before sprinkling, and replacing the residual water remaining on the bath floor 520 with water in which the methylobacterium is not present. Thus, generation of pink mold due to poor killing can be prevented in a shorter time with a smaller amount of water.

In the bathroom 500 of the present embodiment, the bathroom floor 520 is formed to be inclined toward the drain opening 521, the nozzle portion 10a as the cleaning unit is disposed on the side of the table 530 provided on one side in the bathroom 500 and is disposed closer to the upstream side in the flow of the drain water flowing toward the drain opening 521 on the bathroom floor 520 than the drain opening 521, the nozzle portion 10a as the cleaning unit is rotated to spray water from the upstream side of the bathroom floor 520 toward the drain opening 521 in sequence, and the control portion 30 changes the rotation speed of the nozzle portion 10a in such a manner that the cleaning water sprayed later is sprayed at a position closer to the upstream side than the cleaning water flowing on the bathroom floor 520 after being sprayed from the nozzle portion 10a in the pink mold suppression step S3.

Accordingly, the flush water flows along the inclination of the bath floor 520 toward the drain port 521 as a drain flow, and is sequentially sprayed toward the drain port 521 by the rotation of the nozzle portion 10a, so that the flush water flush with the bath floor 520 is easily pushed into the drain port 521 by the mutual coupling of the above, and the entire floor surface of the bath floor 520 can be easily replaced.

In addition, the wash water spilled first flows along the inclination of the bath floor 520 while forming a water film after the wash water is applied to the bath floor 520. Since the water film of the washing water flowing on the bath floor 520 flows toward the drain opening 521 while spreading, the water film is torn, and a portion through which the washing water passes and a portion through which the washing water does not pass are generated. Here, since the rotation speed is changed so that the washing water spilt later is located on the upstream side of the washing water spilt earlier and flows on the bath floor 520, the washing water spilt later is supplied to the water film on the bath floor 520 where the water spilt earlier is performed, and the water film is prevented from being torn. This enables the entire surface of the bath floor 520 to be replaced with the washing water more reliably.

Even when the water film state can be maintained, if the washing water sprayed later is sprayed on the downstream side of the washing water sprayed earlier, water is splashed during spraying, water containing methylobacterium splashes, and even if the water containing bacteria is replaced with washing water, water containing bacteria is splashed on the replaced area. Accordingly, water splashing including bacteria can be prevented when water is applied at a position upstream of the washing water that has been sprayed first to form a water film.

It is preferable that at least a part of the washing water sprinkled from the nozzle portion 10a is applied to the bath walls 541 to 544 standing upward from the bath floor 520.

The water containing Methylobacterium also adheres to the bathroom walls 541-544 due to the user's bathing action. Furthermore, if the sheet adheres to the bathroom walls 541 to 544 for a long time, pink mold is generated on the bathroom walls 541 to 544. Accordingly, by applying at least a part of the washing water to the bath walls 541 to 544, the bath walls 541 to 544 can be replaced with water not containing methylobacterium. In addition, the connection parts between the bathroom walls 541 to 544 and the bathroom floor 520 are also configured such that the cleaning water flowing through the bathroom walls 541 to 544 flows, and therefore, the replacement can be reliably performed. That is, the corners between the wall surfaces of the bathroom walls 541 to 544 and the bathroom floor 520 can be reliably replaced.

Further, the nozzle portion 10a preferably starts to spray water from a wall surface on the upper side in the discharge water flow flowing toward the drain opening 521.

When water is sprayed from the wall surface of the bath room floor 520 on the inclined upper side, the washing water bounced by the wall surface forms a water flow toward the drain opening 521. Thus, water containing methylobacterium present on bathroom floor 520 can be efficiently discharged to drain opening 521 by the flow of washing water rebounded from the wall surface. Therefore, water containing methylobacterium can be prevented from being retained at the lower parts of the wall surfaces of the bath chamber walls 541-544, and pink mold can be effectively prevented from being generated.

Preferably, the control unit 30 rotates the nozzle portion 10a, which is the cleaning unit, at a speed slower than the speed of the discharged water flow flowing on the inclined surface of the bath floor 520.

The washing water bounced back by the wall surface travels on the bath floor 520 while forming a water film, but the water film is spread as the washing water travels, and the water film is torn, and a portion through which the washing water passes and a portion through which the washing water does not pass are generated. Accordingly, the rotation speed can be studied to prevent the water film from being torn, and the entire bath room floor 520 can be more reliably replaced with the washing water.

It is preferable that the washing water near the wall surface of the table 530 is sprayed at a position above the washing water far from the wall surface of the table 530.

The water that has impinged on the bath floor 520 near the nozzle portion 10a as the cleaning unit has a high velocity component in the water discharge (jetting) direction of the nozzle portion 10a as the cleaning unit, and further proceeds toward the wall surface side. When the surface of the substrate is moved forward, Methylobacterium concentrates on the surface of the substrate, and the possibility of producing pink mucus is increased. Accordingly, it is effective that the water attached to the wall surface flows together with the water attached to the wall surface while increasing the energy toward the drain opening 521 due to the water attached to the wall surface at a high position, and the water attached to the water is prevented from being directed toward the wall surface.

If the water is attached to a higher position of the wall surface far from the nozzle portion 10a, which is the cleaning unit, the water may pass through the inclined ridge line of the floor surface of the bath room floor 520. That is, there is a possibility that reverse flow occurs and water containing bacteria reaches a region where replacement is completed with water containing no bacteria. Accordingly, the water applied to the floor surface and the velocity component of the water from the wall surface cancel each other by applying the water to a lower position on the wall surface far from the nozzle portion 10a as the cleaning unit, and the occurrence of the above-described back flow can be effectively suppressed.

Preferably, the bathroom 500 further includes a storage unit for storing the appliances, and the storage unit is provided above the floor surface of the bathroom floor 520.

In a state where the bathroom 500 is placed on the floor surface of the bathroom floor 520, the flow of the washing water flowing to the drain opening 521 formed in the wall surface may be stopped, and the entire floor surface of the bathroom floor 520 may not be replaced. Accordingly, by providing the storage section for storing the bathroom 500 appliance above the floor surface of the bathroom floor 520, the bathroom 500 appliance is prevented from being placed on the floor surface of the bathroom floor 520, and the entire surface of the bathroom floor 520 can be replaced without blocking the flow of the washing water discharged from the wall surface.

At this time, the controller 30 more preferably controls the nozzle unit 10a as the cleaning unit to perform the pink mold suppressing step S3 after the concentrated sprinkling step is performed on the storage unit.

If the collective watering step of the storage unit is performed after the pink mold suppression step S3 is performed, the washing water in the collective watering step may pass through the area after the bath floor 520 is replaced with the washing water, and the replacement of the bath floor 520 may end up in a state of insufficient completion. Then, by performing the pink mold suppressing step S3 after the concentrated watering step for the storage section is performed, it is possible to prevent an insufficient area from being replaced.

In addition, as for the effect of the pink mold suppressing step S3, it is preferable to perform a hydrophilic coating treatment on the surface of the bathroom floor 520.

In this case, even if the methylobacterium adheres to the bath floor 520, the methylobacterium functions extremely effectively in removing bacteria because the bath floor 520 has a high affinity for water. That is, the pink mold can be quickly and sufficiently suppressed (replaced with water containing no methylobacterium) even with a small amount of washing water and a low washing water potential.

In addition, as for the effect of the pink mold suppressing step S3, it is also preferable that the bath room floor 520 has a groove 522 formed therein, which extends in a direction non-parallel to the water wetting direction of the washing water (see fig. 29 (b)).

At this time, when the spilled washing water collides with the bath floor 520 and flows on the bath floor 520, the washing water collides with the grooves 522 to form water waves (water pulses) in the vertical direction. Due to such turbulence of the water flow, the methylobacterium easily peels off from the bath floor 520. In addition, even when the washing water is diffused and flowed on the bath floor 520, the water wave suppresses the adhesion of the methylobacterium to the floor again. Thus, even if the water potential and the amount of the spilled washing water are small, the methylobacterium can be surely removed from the floor.

Change of generation of low concentration sterilizing water

The cleaning unit further includes a low-concentration sterilized water producing unit 20 in a flow path upstream of the nozzle unit 10a in addition to the nozzle unit 10a, the nozzle unit 10a discharging tap water as the 1 st cleaning water and low-concentration sterilized water as the 2 nd cleaning water, and the low-concentration sterilized water producing unit 20 including a removing device 20b for removing methylobacterium from water.

More specifically, as shown in fig. 13, the downstream part of the low-concentration sterilized water producing unit 20 of the present embodiment is a removing device 20b, and the hypochlorous acid produced in the hypochlorous acid producing tank 20a, which is an example of the sterilizing agent producing device, which is the upstream part of the low-concentration sterilized water producing unit 20, is used to kill methylobacterium in tap water, thereby producing cleaning water containing no methylobacterium.

The removing device 20b has a dispersing unit 20c for dispersing the raw water concentration including hypochlorous acid (an example of a bactericide) generated in a hypochlorous acid generation tank 20a, which is an example of a bactericide generation device, upstream of the low-concentration sterilized water generation unit 20, thereby killing methylobacterium in the raw water and generating washing water not including methylobacterium. Specifically, the dispersing unit 20c is formed by partition walls 20d arranged differently from each other. In fig. 13, 20e is an electrode, and 20f is an outer shell.

Here, as shown in fig. 14, the removing device 20b may be configured separately from the hypochlorous acid generating tank 20 a. In this case, the removing device 20b is provided between the hypochlorous acid generating tank 20a and the nozzle portion 10 a.

Fig. 15 is a schematic diagram showing an alternative example 1 of the low-concentration sterilized water producing unit. In the case of fig. 15, instead of using the hypochlorous acid generation tank 20a and the removal device 20b, a coil 21 is provided for heating tap water flowing through a pipe to kill methylobacterium in the tap water. With this configuration, the methylobacterium in the raw water can be killed, and washing water containing no methylobacterium can be produced.

Fig. 16 is a schematic diagram showing an alternative example 2 of the low-concentration sterilized water producing unit. In the case of fig. 16, instead of using the hypochlorous acid generation tank 20a and the removal device 20b, an ultraviolet lamp 22 is provided for irradiating tap water flowing through a pipe having ultraviolet permeability with ultraviolet rays to kill methylobacterium in the tap water. With this configuration, the methylobacterium in the raw water can be killed, and washing water containing no methylobacterium can be produced.

Fig. 17 is a schematic diagram showing a 1 st modification of the low-concentration sterilized water producing unit. In the case of fig. 17, the hypochlorous acid generating tank 20a of fig. 3 is provided with a coil 21 of fig. 15 in addition to the hypochlorous acid generating tank 20a, and a salt adding device 23 for adding salt to the hypochlorous acid generating tank 20a is added. With this configuration, it is possible to kill Methylobacterium in raw water and produce sterilized water having a desired sterilizing effect without including Methylobacterium.

Even with any of the configurations shown in fig. 3 and 15 to 17, the removal can be performed at the bacterial stage of methylobacterium, not at the pink mold stage, and moreover, since methylobacterium is removed from the water before sprinkling, the washing water containing no methylobacterium can be efficiently produced.

However, when the configuration of fig. 3 is adopted, that is, when the removing device 20b disposed in the flow path upstream of the nozzle portion 10a and the hypochlorous acid generating tank (an example of the bactericide generating apparatus) 20a disposed in the flow path upstream of the removing device 20b are used, if the quick-acting property is provided, the pink mold which may be generated on the floor surface of the bath room can be suppressed very inexpensively and reliably by the hypochlorous acid having an extremely low concentration.

Further, removal device 20b of the present embodiment produces, as cleaning water, sterilizing water in which methylobacterium is killed, and after being discharged from nozzle portion 10a, has a low sterilizing power in range 1, which is shorter than the entire length of bathroom 500.

Thus, in the pink mold suppressing step S3, the sterilization and replacement can be performed within the above-described range 1 of the bath floor 520, and only the replacement can be performed within the range 2 outside the above-described range 1 of the bath floor 520.

By replacing the residual water with washing water containing no methylobacterium, the generation of pink mold can be significantly prevented, and a clean state can be maintained for a long time. However, since the water in the water tub is washed or spilled even in the bathroom 500, it is difficult to maintain the state where the methylobacterium is not present at all. Further, if once pink mold is generated by methylobacterium, the pink mold cannot be removed by washing water not containing methylobacterium which does not have bactericidal property, and it is necessary for the user to manually remove (wipe off or use a bactericide to remove).

On the other hand, if the sterilization is performed at the bacterial stage of the methylobacterium, the aging of the bactericide is low, and the bactericidal property at a low concentration is easily maintained even after the killing, and it is not difficult to produce such a bactericide, and if the bactericidal property at a low concentration, the influence on the apparatus is small.

Accordingly, in the present embodiment, as an appropriate mode, it is possible to realize safe and easily ensured bactericidal watering in the range of 1, without maintaining bactericidal properties to the entire bathroom floor 520. Within this range, the bactericidal activity can be maintained even if the residual water is replaced to maintain "clean", and thus, the water spilled after replacement can be removed of methylobacterium, or the produced pink mold can be attacked. This can further maintain "clean", and can significantly reduce the labor and time required for cleaning.

The nozzle portion 10a of the present embodiment is disposed on the table 530 side of the bathroom 500, and the range 1 includes the table 530 and the drain 521.

As described above, in the range 1, the bactericidal performance can be ensured while maintaining the "cleanness" achieved by the replacement. Accordingly, investigation was conducted so that the platform 530 and the drain opening 521 were located within range 1, whereby bactericidal properties could be secured for portions where pink mold, which is likely to remain in methylobacterium, is highly concerned. That is, the greatest effect can be obtained in the bathroom 500 by a study of a simple configuration.

Fig. 18 is a schematic diagram showing an example of such a sterilization area and an alternative area. In this example, approximately half of the bath floor 520 on the table 530 side (nozzle portion 10a side) is a sterilization area, and approximately half of the side distant from the table 530 (and nozzle portion 10a) is a replacement area.

Regarding the sterilization effect, the controller 30 preferably controls the nozzle unit 10a as the cleaning unit to spray the cleaning water as if the cleaning water were directly supplied to the drain opening 521 through the air.

When the washing water reaches drain outlet 521 through bath floor 520, the bactericidal concentration of the washing water decreases due to contact with organic matter or contact with residual water, and a bactericidal effect may not be expected. In order to avoid this, if control is employed such that water is directly supplied to the drain opening 521 through the air, replacement of the drain opening 521 having a high risk of pink mold generation can be more reliably performed with a simple configuration.

In this case, the nozzle portion 10a is more preferably disposed on the side of the table 530 and close to the drain opening 521.

Since the bactericidal concentration of the bactericide decreases by contact with air only through the air, the bactericide has a low concentration and an effect cannot be expected in some cases. Accordingly, by disposing the nozzle portion 10a in the vicinity of the drain opening 521 in a manner offset, it is possible to suppress the deterioration of the bactericidal concentration with a simple configuration, that is, it is not necessary to make the bactericidal agent high in concentration, that is, it is possible to kill the pink mold in the drain opening 521 by the bactericidal agent obtained by killing the methylobacterium.

In the pink mold suppressing step S3, it is preferable that the washing water is sprayed so that the washing water is also sprayed on the lower portion of the wall surface of the bathroom walls 541 to 544 standing from the periphery of the floor surface of the bathroom floor 520 in the range 1, and the spraying is performed so that the spraying height of the wall surface on the side of the table 530 is the highest.

In the periphery of the table 530, as described below, bath water and shower water from a bather are scattered in a large amount, and particularly, pink mold is likely to be generated on the wall surface of the shower wall 542 on the table 530 side. Accordingly, the replacement water is allowed to be attached to the wall surface on the stage 530 side to reliably replace the water, and the bactericidal action is maintained even in the region where the risk is high, whereby the generation of pink mold can be reliably suppressed, and the "clean state" can be maintained for a long time.

The nozzle portion 10a of the present embodiment is disposed below the table 530.

The most splashing of water occurs below the table 530, and the greatest risk of pink mold formation on the walls below the table 530. By disposing the nozzle portion 10a below the table 530, the above-described risk can be significantly reduced.

The control unit 30 of the present embodiment can change the 1 st range by controlling the removal device 20 b.

Although the clean state can be maintained for a long time by the replacement of the washing water in the pink mold inhibition step S3, if pink mold is generated once by sprinkling water or the like after the replacement, it is impossible to cope with this by sprinkling washing water not containing methylobacterium. If the entire area of the bath floor 520 is set to the 1 st range where the bactericidal action is secured, the concentration needs to be increased, which may cause waste and corrosion of the apparatus. Therefore, it is advantageous to provide flexible measures against various demands of users by varying the 1 st range, that is, adjusting the concentration of the bactericidal component in the washing water. This suppresses the labor and time required for cleaning, and the reduction in the time required for protecting the equipment and cleaning the equipment, which is associated with the reduction in the frequency of increasing the concentration, thereby reducing the problems of the replacement technique while exhibiting such practically useful effects.

Specifically, according to the control unit 30 of the present embodiment, by controlling the removal device 20b, it is possible to implement a mode in which the 1 st range of the bath floor 520 is set to zero and the entire floor surface of the bath floor 520 is set to the 2 nd range, and it is also possible to implement a mode in which the 2 nd range of the bath floor 520 is set to zero and the entire floor surface of the bath floor 520 is set to the 1 st range.

The low-concentration sterilized water producing unit 20 (an example of a sterilizing agent producing apparatus) of the present embodiment produces washing water containing no methylobacterium by decomposing chlorine in tap water as a quick-acting sterilizing agent by using electrodes serving as sterilizing component producing means to produce hypochlorous acid, and using the generated hypochlorous acid to kill methylobacterium in the tap water by the removing apparatus 20 b.

In the case where tap water is used, hypochlorous acid having a low concentration but a quick action is generated from chlorine in the tap water. Although hypochlorous acid has a high air attenuation and thus a large range of 2, if the removing device 20b for removing methylobacterium is disposed in the vicinity, sufficient bactericidal activity for killing methylobacterium can be easily secured, and thus it is practically useful.

Chlorine concentration in low concentration sterilized water

In the present embodiment, as described above, tap water having a chlorine concentration of usually 0.1 to 0.3ppm is electrolyzed to generate hypochlorous acid, and methylobacterium in the tap water is killed with the hypochlorous acid, thereby generating washing water containing no methylobacterium. Thus, the low-concentration sterilized water producing unit 20 can efficiently produce low-concentration sterilized water (an example of washing water not containing methylobacterium) from tap water without complicating the flow path structure.

The chlorine concentration of the cleaning water in the interior of the removal device 20b, particularly in the outlet region, is adjusted to 0.4 to 1.0 ppm. The reason for this is that the cleaning water effective in the pink mold suppressing step S3 is the cleaning water having the chlorine concentration of 0.4 to 1.0ppm in the interior of the removing device 20b, particularly in the outlet region, based on the knowledge of the present inventors.

In order to remove pink mold once generated on the bath floor 520, it is necessary to use sterilizing water having a high concentration of chlorine. The concentration required for killing pink mould is more than 1 ppm. However, in the present embodiment, methylobacterium causing the generation of pink mold can be removed by only slightly increasing the concentration of chlorine components contained in the raw water (0.1 ppm in a region where the chlorine concentration is low, and 0.3ppm as the average value of the chlorine concentration in the tap water in the country) to 0.4 to 1.0 ppm.

As described above with reference to fig. 13, the removing apparatus 20b of the present embodiment has the dispersing unit 20c that disperses the raw water concentration including hypochlorous acid (an example of a bactericide) generated in the hypochlorous acid generating tank 20a, which is an example of a bactericide generating apparatus, upstream of the low-concentration sterilized water generating unit 20, thereby killing methylobacterium in the raw water and generating cleaning water not including methylobacterium.

By effectively dispersing hypochlorous acid, which can be generated locally in the hypochlorous acid generation tank 20a, in raw water in the dispersing section 20c, even if the chlorine concentration of hypochlorous acid is low, it is possible to more reliably react with methylobacterium, and thus, the methylobacterium in raw water can be effectively removed.

As described above, the removal device 20b of the present embodiment produces, as cleaning water, sterilizing water in which methylobacterium is killed, and after being discharged from the nozzle portion 10a, has a low sterilizing power in the 1 st range shorter than the entire length of the bathroom 500.

Thus, in the pink mold suppressing step S3, the sterilization and replacement can be performed within the above-described range 1 of the bath floor 520, and only the replacement can be performed within the range 2 of the bath floor 520 other than the above-described range 1.

In the case of the present embodiment, it is preferable that the chlorine concentration of the washing water after the 1 st range of the bath floor 520 is flushed is 0.4ppm or more.

Here, it is more preferable that the chlorine concentration of the washing water after the 1 st range of the bath floor 520 is wetted is 0.8ppm or more.

As an item that requires a high level of customers of the bathroom 500, there is a countermeasure against black mold. Among them, the water outlet 521 and the elbow pipe, which have a high tendency to accumulate and retain keratin, which causes black mold generation after the user's bathing behavior, are particularly required to suppress black mold generation. By setting the chlorine concentration of the washing water in the range of 1 including the stage 530 and the drain 521 to 0.8ppm or more, black mold can be removed in addition to Methylobacterium.

The nozzle section 10a as the cleaning unit preferably includes a high concentration unit (for example, a salt adding device 23) for increasing the chlorine concentration in the cleaning water generated by the removing device 20b (see fig. 17). In this case, the control unit 30 can perform a high concentration removal process of sterilizing and replacing the entire floor surface of the bath room floor 520 by controlling the high concentration unit. In this case, it is preferable to selectively perform the pink mold inhibition step S3 and the high concentration removal step.

In a bathroom with a large number of users (a large number of bacteria causing stains) or a bathroom that has not been used for a long time, there is a possibility that methylobacterium and black mold exist on the entire bathroom floor 520 (black mold floats in the air). Since the chlorine concentration of the washing water spilled in the pink mold inhibition step S3 is low, methylobacterium and black mold cannot be killed in such a situation. In order to cope with such a situation, a high concentration removal step is provided, whereby methylobacterium and black mold can be killed in a bathroom with many users or a bathroom unused for a long time.

The following 3 graphs are also applied to the above description of the effects.

FIG. 19 is a graph showing the relationship between the sterilization time and the water spray amount of Mucor and Micromyces pink generated in a bathroom at each effective chlorine concentration. Accordingly, it was confirmed that the sterilization time and the water spray amount of black mold and pink mold were in a trade-off relationship with each other. Further, it was confirmed that the higher the effective chlorine concentration, the shorter the sterilization time of black mold and pink mold and the smaller the amount of water sprayed.

However, even if the effective chlorine concentration after spraying is 1ppm, the amount of water sprayed is not significantly reduced, and a corresponding amount of water sprayed is still required.

As in the present embodiment, the pink mold suppression step S3 is performed using the washing water for killing bacteria before sprinkling, which is very effective in water saving.

FIG. 20 is a graph showing concentration decay after sprinkling water at each effective chlorine concentration. As shown in FIG. 20, even if the effective chlorine concentration before sprinkling is 1ppm, the effective chlorine concentration after the application of water is greatly reduced due to the concentration attenuation of the sprinkled water in the bathroom.

If the effective chlorine concentration of the entire bathroom 500 after water application reaches 0.4ppm by spraying the washing water to the entire bathroom 500 (spraying distance is about 2 m), it is necessary to make the effective chlorine concentration at the time of water discharge about 2ppm as shown in fig. 20. However, it is not easy to realize such a high effective chlorine concentration from the effective chlorine component in tap water (a high concentration unit is required).

FIG. 21 is a graph showing the killing time of Methylobacterium at each effective chlorine concentration. As shown in FIG. 21, if the effective chlorine concentration is 0.4ppm, the Methylobacterium is killed almost instantaneously. That is, the generation of pink mold can be suppressed by replacing the residual water with the washing water of the concentration obtained by the prior treatment before sprinkling (before attenuation). (conversely, it can be said that Methylobacterium survives at an effective chlorine concentration of 0.3 ppm.)

Effect of Black mold inhibition step

The bathroom 500 of the present embodiment includes: a bath floor 520 of a bath room constituting the bath room 500; a drain outlet 521 provided in the bath floor 520 to drain the residual water on the bath floor 520; bathroom walls 541-544 erected from the periphery of the bathroom floor 520; a cleaning unit having a nozzle portion 10a for spraying cleaning water onto the bath floor 520; and a control unit 30 for controlling the nozzle unit 10a of the cleaning unit. The controller 30 controls the nozzle unit 10a to perform the mold black suppression step S1, and the mold black suppression step S1 is a step of spraying the washing water so that the keratin that causes mold black generation remaining on the bathroom floor 520 is discharged from the bathroom floor 520 to the drain opening 521.

The washing water sprayed from the nozzle portion 10a in the mold blackness suppression step S1 is used to remove the cutin of the bath floor 520 and to flow so that the removed cutin is not deposited at the corner between the periphery of the bath floor 520 and the bath walls 541 to 544.

According to the present embodiment, by performing the black mold suppressing step S1 of removing cutin which is a cause of black mold remaining on the bath floor 520, the cutin on the bath floor 520 can be significantly reduced, and further, the mold generation on the bath floor 520 can be significantly suppressed.

In the black mold suppressing step S1, it is important to peel off the keratin remaining on the bathroom floor 520 and remove the keratin without remaining in the drain opening 521. When only water is sprayed to remove the cutin, it is important that the cutin does not adhere to the floor surface of the bath floor 520 again and reach the drain opening 521.

Further, even if water is sprayed to remove cutin from the bath floor 520 and cutin can be removed, the washing water sprayed from the nozzle portion 10a is sprayed in one direction and reaches the corner between the bath floor 520 and the bath walls 541 to 544 on the extension of the one direction, and the cutin which is not easily peeled off collides with the corner and is accumulated at the corner, and even if the generation of black mold on the bath floor 520 can be suppressed, there is a problem that the generation of black mold at the corner cannot be sufficiently suppressed.

According to the cleaning apparatus 100 of the present embodiment, the cleaning water sprayed from the nozzle portion 10a in the mold release step S1 removes the cutin of the bath floor 520 and flows so that the removed cutin is not deposited at the corner between the periphery of the bath floor 520 and the bath walls 541 to 544, so that mold release can be suppressed not only at the bath floor 520 but also at the corner.

Further, it is preferable that the controller 30 of the present embodiment performs a reattachment prevention watering step, which is a step of controlling the nozzle portion 10a to further spill washing water for preventing the cutin removed from the bath floor 520 from reattaching to the bath floor 520.

Even if the keratin is peeled off by the spilled washing water, the keratin contained in the washing water may be attached to the bath room floor 520 again in the course of flowing to the drain opening 521. Therefore, the reattachment preventing step is a step of surely preventing the cutin from reattaching to the bath floor 520 by performing the reattachment preventing water sprinkling step, and the reattachment preventing water sprinkling step is a step of sprinkling washing water for preventing the cutin removed from the bath floor 520 from reattaching to the bath floor 520.

As shown in fig. 22, the washing water sprayed from the nozzle portion 10a in the mold blacking out step S1 of the present embodiment includes: flowing water No. 1 for initially contacting cutin remaining on the bath floor 520 to peel the cutin from the bath floor 520; and flowing water No. 2 for carrying the keratin peeled off from the bath floor 520 to the drain 521. Fig. 22 is a schematic diagram showing the flow state of the 1 st flowing water (1 st water wave) and the 2 nd flowing water (2 nd water wave) according to the present embodiment.

Even if the keratin is peeled off by the spilled washing water, the keratin contained in the washing water is easily attached to the bath floor 520 again, particularly in the vicinity of the drain opening 521 or the like, due to the reduction in the washing water level accompanying the diffusion of the washing water in the course of flowing to the drain opening 521. Therefore, it is effective to separately spill (flow) the 1 st flowing water and the 2 nd flowing water, the 1 st flowing water is a water flow for peeling off cutin remaining on the bathroom floor 520 from the bathroom floor by first contacting the cutin, and the 2 nd flowing water is a water flow for transporting the cutin peeled off from the bathroom floor to the drain outlet 521.

If reattachment of the cutin to the floor of the bath room due to the decrease in the water level accompanying the diffusion of the washing water during the flow to the drain opening 521 is suppressed only by the No. 1 flowing water for peeling off the cutin, it is necessary to spill a large amount of the washing water at a time, thereby preventing reattachment of the cutin due to the decrease in the water level. If the No. 1 running water and the No. 2 running water are separated, the No. 1 running water is sprinkled for peeling off the cutin, and the No. 2 running water is sprinkled for conveying the peeled cutin, the cutin can be removed from the bath room floor 520 with a smaller amount of washing water, and the water can be reliably discharged to the water outlet 521.

In the present embodiment, the 1 st flowing water flows on a predetermined portion of the bath floor 520, and the 2 nd flowing water flows on the predetermined portion after a predetermined time has elapsed from the 1 st flowing water reaching the predetermined portion.

If the No. 1 flowing water and the No. 2 flowing water are sprayed simultaneously, the aim of separately controlling the two water sprays is not effective, and even if the time between the two water sprays is too long, the keratin is dried and easily reattached, which is not preferable. Thus, it is effective to appropriately control the time between two sprinkles. In the present embodiment, since the 1 st flowing water flows on a predetermined portion of the bath floor 520 and the 2 nd flowing water flows on the predetermined portion after a predetermined time has elapsed from the arrival of the 1 st flowing water at the predetermined portion, the keratin reattachment can be reliably prevented with a small amount of washing water by a simple configuration.

In the present embodiment, the flow rate of the 2 nd flowing water toward the drain opening 521 is higher than the flow rate of the 1 st flowing water toward the drain opening 521 at the predetermined position, and the 2 nd flowing water merges with the 1 st flowing water before reaching the drain opening 521.

The water level is lowered by the diffusion of the 1 st flowing water as the water approaches the drain opening 521, and the cutin is easily reattached. Therefore, it is more effective to shorten the time of the approach to the drain opening 521 and to merge the water before reaching the drain opening 521, than to control the time until the 2 nd flowing water reaches the predetermined position from the 1 st flowing water to be constant in each part of the bath floor 520. This makes it possible to effectively compensate for the drop in water level caused by the diffusion of the 1 st flowing water, and to more reliably prevent the reattachment of the cutin.

The nozzle portion 10a of the present embodiment is configured to rotate around an axis perpendicular to the floor 520 of the bath room, and the rotation of the nozzle portion 10a is controlled by the control unit 30, whereby the flow rate of the 2 nd flow water to the drain opening 521 at the predetermined position is adjusted to be faster than the flow rate of the 1 st flow water to the drain opening 521.

That is, by controlling the feed rate of the rotation of the nozzle portion 10a, the flow rate of the 1 st flowing water to the drain opening 521 and/or the flow rate of the 2 nd flowing water to the drain opening 521 can be controlled relatively easily, and the lag time between the two and the position at which the two join together can be adjusted relatively easily.

In the present embodiment, when the flush water is to be injected into a region distant from the nozzle portion 10a, the control unit 30 controls the rotation of the nozzle portion 10a so that the rotation speed of the nozzle portion 10a is lower than when the flush water is to be injected into a region close to the nozzle portion 10 a.

Since the water potential of the spilled washing water decreases as the sprinkling distance increases, the speed of the washing water flowing toward the drain opening 521 also decreases. To compensate for this tendency, the number of revolutions is reduced as the distance between the water jets is increased, and the amount of water jetted is increased, whereby the optimal water jetting control for the 1 st flow water and the optimal water jetting control for the 2 nd flow water can be achieved by simple control.

Effect of controlling water sprinkling from both sides of water outlet

The bathroom 500 of the present embodiment includes: a bath floor 520 of a bath room constituting the bath room 500; a drain outlet 521 provided in the bath floor 520 to drain the residual water on the bath floor 520; bathroom walls 541-544 erected from the periphery of the bathroom floor 520; a cleaning unit having a nozzle portion 10a provided on one side of the bathroom 500 and spraying cleaning water onto the bathroom floor 520 while rotating; and a control unit 30 for controlling the nozzle unit 10a of the cleaning unit. The controller 30 controls the nozzle unit 10a to perform the mold black suppression step S1, and the mold black suppression step S1 is a step of spraying the washing water so that the keratin that causes mold black generation remaining on the bathroom floor 520 is discharged from the bathroom floor 520 to the drain opening 521.

Then, the rotation of the nozzle portion 10a is controlled in the mold inhibiting step S1, thereby performing the 1 st cleaning step (the mold inhibiting step in the first half) and the 2 nd cleaning step (the mold inhibiting step in the second half), wherein the 1 st cleaning step (the mold inhibiting step in the first half) is a step of moving the attachment position of the cleaning water sprayed from the nozzle portion 10a from one side of the bathroom 500 toward the drain opening 521, and the 2 nd cleaning step (the mold inhibiting step in the second half) is a step of moving the attachment position of the cleaning water sprayed from the nozzle portion 10a from the other side of the bathroom 500 toward the drain opening 521.

In the black mold suppressing step S1, it is important to peel off the cutin remaining on the bathroom floor 520 and to reliably convey the cutin to the drain opening 521 while preventing the cutin from adhering to the floor surface of the bathroom floor 520 again. For this purpose, if water is simply sprayed, there is a possibility that keratin is deposited on the corner between the periphery of the bathroom floor 520 and the bathroom walls 541 to 544, and cannot be reliably conveyed to the drain opening 541.

According to the present embodiment, the problem is surely solved by studying a method of spilling the washing water. Specifically, the nozzle portion 10a for spraying washing water onto the bathroom floor 520 while rotating is used, and the cutin is reliably conveyed to the drain opening 521 by performing the 1 st washing step and the 2 nd washing step, the 1 st washing step is a step of moving the landing position of the washing water sprayed from the nozzle portion 10a from one side of the bathroom 500 toward the drain opening 521 by controlling the rotation of the nozzle portion 10a, and the 2 nd washing step is a step of moving the landing position of the washing water sprayed from the nozzle portion 10a from the other side of the bathroom 500 toward the drain opening 521 by controlling the rotation of the nozzle portion 10 a.

In the present embodiment, the 1 st cleaning step (first half mold black suppression step) is completed in a state where the flush position of the washing water sprinkled from the nozzle portion 10a includes the drain opening 521. Thus, the peeled off keratin is reliably discharged to the water discharge opening 521, and the peeled off keratin is prevented from being deposited on the corner portion beyond the water discharge opening 521.

In addition, since the region (2 nd cleaning region) which is not cleaned in the 1 st cleaning step (first half of the mold black inhibition step) is separated and cleaned in the 2 nd cleaning step (second half of the mold black inhibition step), the keratin in the 2 nd cleaning region is also reliably discharged to the water outlet 521.

Thus, since the simple water spray method such as separate cleaning up to the drain opening 521 is adopted, the cleaning apparatus 100 of the present embodiment can reliably carry the cutin remaining on the floor surface to the drain opening 521 while reliably peeling off the cutin, and the cutin is not deposited at the corner between the floor surface of the bathroom floor 520 and the bathroom walls 541 to 544.

The bath floor 520 of the present embodiment is substantially rectangular in plan view, and a table 530 is provided on the 1 st side of the bath floor 520, the nozzle portion 10a is disposed on the table 530, and the drain opening 521 is disposed on the 3 rd side which is one of the two sides of the bath floor 520 excluding the 1 st side and the 2 nd side opposite to the 1 st side.

Thus, since the nozzle section 10a and the drain opening 521 are not disposed on the same side, deposition of keratin at the corner can be effectively prevented. If the nozzle section 10a and the drain opening 521 are disposed on the same side, the risk of deposition of keratin on the corner of the 1 st side increases even if the washing is stopped at the drain opening position by washing and peeling and collecting keratin. This risk is reduced by adopting the configuration described above in the present embodiment.

In particular, by disposing the nozzle section 10a on the side of the table 530 (side 1), the removal performance of the cutin is improved. Specifically, although a large amount of keratin remains before the table 530 when washing the body, the nozzle section 10a is disposed on the 1 st side, so that the water potential or the water amount of the washing water can be secured, and the keratin can be more reliably peeled off.

Further, if the drain opening 521 is disposed on the 2 nd side, the risk of keratin deposition (remaining) on the 2 nd side due to the water potential of the spilled washing water increases even if the spilling of washing water is stopped at the position of the drain opening 521 because the drain opening 521 faces the spilling direction of the washing water from the nozzle portion 10 a. At this time, it is difficult to reliably convey keratin to the drain opening 521. In contrast, in the present embodiment, by disposing the drain opening 521 on the 3 rd side, the cutin is not deposited (remains) at any one of the corners, and the cutin can be reliably guided to the drain opening 521.

The nozzle portion 10a of the present embodiment is disposed in the middle between the 3 rd side and the 4 th side opposite to the 3 rd side, but may be disposed on the 4 th side with respect to the middle.

The washing water containing more keratin peeled off by the washing water finally reaches around the drain opening 521. The washing water spreads while flowing down from the upstream, and the water level and the flow rate decrease in the downstream. Due to these factors, keratin is likely to adhere to the floor surface around the drain opening 521 again. In consideration of this tendency, by disposing the nozzle portion 10a on the 4 th side including the middle of the 3 rd side and the 4 th side, if the washing water spilled from the nozzle portion 10a flows in the direction of the drain opening, the surroundings of the drain opening 521 to which cutin is likely to adhere again are easily cleaned directly, and the force of pushing the cutin into the drain opening 521 is easily increased by raising the water level of the washing water (drain water flow) on the floor of the bath room. This effectively prevents the keratin from adhering to the periphery of the drainage opening 521 again.

The first cleaning step (first half mold black suppression step) of the present embodiment includes a state where the flush position of a part of the cleaning water sprayed from the nozzle portion 10a is the drain opening 521, and the second cleaning step (second half mold black suppression step) also includes a state where the flush position of a part of the cleaning water sprayed from the nozzle portion 10a is the drain opening 521.

As described above, keratin concentrated with the washing water tends to accumulate around the drain opening 521, and the risk of black mold is high. When the shower of the washing water is stopped around the drain opening 521, the drainage of the washing water to the drain opening 521 is improved, but a part of the keratin may be attached to the periphery of the drain opening 521 again. Accordingly, in both of the 1 st washing step and the 2 nd washing step, a part of the washing water is directly applied to the drainage opening 521, that is, the periphery of the drainage opening 521 to which the keratin is likely to adhere again is finely washed 2 times, whereby the residual keratin can be more effectively suppressed.

In the first cleaning step (first half mold black suppressing step) of the present embodiment, the flush position of the cleaning water sprayed from the nozzle portion 10a is moved in the order of the 1 st side, the 4 th side, the 2 nd side, and the 3 rd side of the bath floor 520, and in the second cleaning step (second half mold black suppressing step), the flush position of the cleaning water sprayed from the nozzle portion 10a is moved in the order of the 1 st side and the 3 rd side of the bath floor 520. Then, the 1 st cleaning step is performed and the 2 nd cleaning step is performed.

When the first cleaning step 1 and the second cleaning step 2 are performed in a time-staggered manner, when the cleaning of one cleaning region is completed, a part of the cleaning water containing the horny substance may diffuse to the other cleaning region, and the horny substance contained in the part of the cleaning water may adhere to the other cleaning region again. Further, if the time from the end of one washing step to the start of the other washing step is long, the risk of the cutin adhering to the bath floor 520 again due to the progress of the discharge of the washing water increases. Thus, the time between 2 washing steps is preferably short. Therefore, as in the present embodiment, differences are provided in advance in the cleaning regions to be cleaned in the 1 st cleaning step and the 2 nd cleaning step so that the time from the end of one cleaning step to the start of the other cleaning step is short, and by performing cleaning over a wide range first, the risk of reattachment of the cutin can be reduced.

In the present embodiment, a floor surface of the bath room floor 520 is provided with a drainage slope toward the drainage port 521. Therefore, it is preferable to clean the 4 th side, which is the opposite side of the drain opening 521. At this time, the washing water on the 4 th side can be forcibly flowed toward the drain opening 521 due to the inclination of the drain water, and can be splashed into the region to be washed only in the 2 nd washing step, but the 2 nd washing step is further performed, so that no problem occurs. On the other hand, although there is a possibility that the washing water spilled in the 2 nd washing step may be splashed into the region to be washed only in the 1 st washing step, the flow velocity is slow and the splashing degree is significantly low because the washing water climbs up in the flow direction above the inclination of the drain.

Before the 1 st cleaning step, the 1 st cleaning step may be performed to maintain the flush position of the cleaning water sprayed from the nozzle portion 10a at the above-described 1 st side of the bath floor 520.

More cutin remains around the table 530, and particularly, cutin is likely to be accumulated in the back of the table 530. Accordingly, by performing the 1 st side cleaning step of cleaning the 1 st side in advance, the cutin can be pushed out from the 1 st side to each cleaning region cleaned in the 1 st cleaning step and the 2 nd cleaning step, and as a result, the cleaning performance of the periphery of the table 530 can be improved.

In the present embodiment, the number of the nozzle portions 10a is one, and the control portion 30 stops (or may reduce) the washing water spilled from the nozzle portions 10a after the first washing step is performed, rotates the nozzle portions 10a to the start position of the second washing step, and then performs the second washing step.

The 1 st cleaning step and the 2 nd cleaning step may be performed by providing 2 nozzle units and performing each nozzle unit. For example, sprinkling may be performed simultaneously so as to sandwich the drain opening 521 from both sides. However, providing 2 nozzle portions increases the cost. The present embodiment has confirmed that even 1 nozzle unit can achieve substantially the same effect as the case of providing 2 nozzle units. That is, even if the washing water sprayed from the nozzle portion 10a is stopped (or reduced) after the first washing step 1 is performed, and the second washing step 2 is performed after the nozzle portion 10a is rotated to the start position of the second washing step 2, high removal performance for keratin can be achieved. The reason why the shower of the washing water is stopped or reduced after the 1 st washing step is to save water and to prevent the peeled keratin from being transported to the 1 st side (the 2 nd washing zone).

Specific example of more appropriate sprinkling control conditions

As a result of various experiments on the cleaning apparatus 100 according to the present embodiment, in order to more reliably suppress the generation of slime on the bathroom floor 520, when the control unit 30 performs the pink mold suppressing step S3, it is preferable to replace 80 to 100% of tap water remaining on the bathroom floor 520 after the black mold suppressing step S1 with low-concentration sterilized water.

In order to achieve such a replacement rate, according to knowledge obtained by various experiments by the present inventors, when the control unit 30 performs the black mold suppressing step S1, tap water is preferably sprayed from the nozzle section 10a onto the bath floor 520 at a water spray rate of 0.4 to 4.0L/min per unit time, and when the control unit 30 performs the pink mold suppressing step S3, low-concentration sterilizing water is preferably sprayed from the nozzle section 10a onto the bath floor 520 at a water spray rate of 0.2 to 2.0L/min per unit time. According to the verification of the present inventors, in the comparison between the amount of tap water sprayed per unit time in the black mold suppressing step S1 and the amount of low-concentration sterilizing water sprayed per unit time in the pink mold suppressing step S3, the latter amount can be made smaller than the former amount. When such a balance of water application per unit time is adopted, a higher replacement rate can be achieved.

From another viewpoint (based on other parameters), according to the knowledge obtained by the present inventors, when the control unit 30 performs the mold black suppression step S1, the area per unit is preferably 0.05 to 0.5L/cm²The amount of tap water to be sprayed from the nozzle part 10a to the bathroom floor 520, and when the control part 30 performs the pink mold suppressing step S3, the amount of tap water to be sprayed is preferably 0.06 to 0.6L/cm per unit area²The shower amount of (2) is to shower low-concentration sterilizing water from the nozzle portion 10a onto the bath floor 520. When such a balance of water application per unit time is adopted, a higher replacement rate can be achieved.

From another viewpoint (based on other parameters), according to the knowledge obtained by the inventors of the present invention, when the control unit 30 performs the black mold suppressing step S1, tap water is preferably sprayed from the nozzle section 10a onto the bathroom floor 520 at a spray amount of 0.8 to 8.0L of the total water amount, and when the control unit 30 performs the pink mold suppressing step S3, low-concentration sterilizing water is preferably sprayed from the nozzle section 10a onto the bathroom floor 520 at a spray amount of 1.0 to 10.0L of the total water amount. According to the verification of the present inventors, in the comparison between the total amount of tap water sprayed in the black mold suppressing step S1 and the total amount of low-concentration sterilizing water sprayed in the pink mold suppressing step S3, the latter amount can be made smaller than the former amount. When such a balance of total water amount is adopted, a higher replacement rate can be achieved.

From another viewpoint (based on other parameters), according to the knowledge obtained by the present inventors, when the control unit 30 performs the black mold suppressing step S1, tap water is preferably sprayed from the nozzle section 10a onto the bath floor 520 at a flow rate of 0.8 to 8.0m/S, and when the control unit 30 performs the pink mold suppressing step S3, low-concentration sterilizing water is preferably sprayed from the nozzle section 10a onto the bath floor 520 at a flow rate of 0.8 to 8. m/S. When such flow rate balancing is employed, a higher replacement rate can be achieved.

From another viewpoint (based on other parameters), according to the knowledge obtained by the present inventors, when the control unit 30 performs the black mold suppressing step S1, tap water is preferably sprayed from the nozzle portion 10a onto the bath floor 520 with a particle size of 100 to 500 μm, and when the control unit 30 performs the pink mold suppressing step S3, low-concentration sterilizing water is preferably sprayed from the nozzle portion 10a onto the bath floor 520 with a particle size of 100 to 300 μm. When such a particle size balance is adopted, a higher substitution rate can be achieved.

Fig. 23 is a diagram showing an example of the appropriate watering conditions described above.

In addition, as described above, it is effective that no cutin (removal) is present on the bath floor 520 on the basis of the inhibition of the generation of black mold. Accordingly, when the control unit 30 performs the mold blackness suppressing step S1, it is preferable that tap water be sprayed from the nozzle portion 10a onto the bath floor 520, so that, in particular, keratin on the bath floor 520 is caused to flow to the drain opening 521 together with the tap water. Specifically, for example, if information on the amount of remaining keratin (or the tendency to remain) in each area on the bath floor 520 is provided, it is preferable to apply such information when the black mold suppressing step S1 is performed. For example, in a region where the amount of keratin remaining is large (or the remaining tendency is high), it is effective to perform correction such as increasing the amount of tap water discharged per unit area, increasing the amount of tap water discharged per unit time, increasing the total amount of tap water, or increasing the flow rate of tap water.

In order to reliably replace tap water with low-concentration sterilized water, when the control unit 30 performs the pink mold suppression step S3, as shown in fig. 24 and 25, it is preferable to spill the low-concentration sterilized water from the nozzle portion 10a to an area larger than the area where the tap water is spilled onto the bath floor 520 when performing the black mold suppression step S1. This can be achieved by controlling the flow rate at the time of discharging the low-concentration sterilizing water to be larger than the flow rate at the time of discharging the tap water.

Temporary stop control in front of drain

According to further studies by the present inventors, in the mold blackness suppressing step S1, it is preferable that the rotation of the nozzle section 10a be temporarily stopped when the tap water is sprayed from the nozzle section 10a to a position in front of the drain opening 521, or the average rotation speed of the nozzle section 10a be reduced to an ultra-low speed (for example, about 1 to 3 °/S) in a rotation region including the position.

When such control is adopted, as shown in fig. 26, the state in which tap water sprinkled from the nozzle portion 10a flows into the drain opening 521 as a water flow can be temporarily maintained. This allows cutin on the bath floor 520 to be efficiently flushed toward the drain 521.

Fig. 27 is a schematic view showing a time chart in the mold blackness suppressing step S1 in which the temporary stop control of the front surface of the drain port is adopted.

As shown in fig. 27, the controller 30 of the present embodiment temporarily stops the rotation of the nozzle portion 10a by extending the stop time of the electric motor 17 (for example, about 20 seconds) at a position P5 at which the region of the tap water sprinkled from the nozzle portion 10a reaches the front surface of the drain opening 521 while the nozzle portion 10a is rotated from the 4 th position P4 to the 2 nd position P2. This can temporarily maintain the state in which tap water sprinkled from the nozzle portion 10a flows into the drain opening 521 as a water flow.

Here, if the tap water reaches the position P5 in front of the drain opening 521 in the tap water region sprayed from the nozzle portion 10a and strikes the 2 nd wall 542 at an acute angle θ (for example, 5 to 85 °) in plan view, the tap water striking the 2 nd wall 542 flows into the drain opening 521 as a rebounding water flow rebounded by the 2 nd wall 542, and the state is temporarily maintained due to the temporary stop (or deceleration) of the rotation of the nozzle portion 10a, so that the horns on the bathroom floor 520 can be more effectively pushed toward the drain opening 521.

Similarly, according to a further study by the present inventors, in the pink mold suppression step S3, it is also preferable to temporarily stop the rotation of the nozzle portion 10a at a position where the region of the low-concentration sterilized water sprayed from the nozzle portion 10a reaches the front surface of the drain opening 521, or to reduce the average rotation speed of the nozzle portion 10a to an ultra-low speed in the rotation region including the position.

When such control is adopted, as shown in fig. 27, the state in which the low-concentration sterilizing water sprinkled from the nozzle portion 10a flows into the water flow and flows toward the drain opening 521 can be temporarily maintained. This allows tap water on the floor 520 of the bath room to be efficiently flushed toward the drain 521.

As shown in fig. 28, the controller 30 of the present embodiment temporarily stops the rotation of the nozzle portion 10a by extending the stop time of the electric motor 17 (for example, about 40 seconds) at a position P5 at which the low-concentration sterilizing water sprinkled from the nozzle portion 10a reaches the front surface of the drain opening 521 while the nozzle portion 10a is rotated from the 4 th position P4 to the 2 nd position P2. This can temporarily maintain the state in which the low-concentration sterilizing water sprinkled from the nozzle portion 10a flows into the water flow and flows toward the drain opening 521.

Here, if the low-concentration sterilizing water sprayed from the nozzle portion 10a reaches the position P5 in front of the drain opening 521 and if the low-concentration sterilizing water impinges on the 2 nd wall 542 at an acute angle θ (for example, 5 to 85 °) in plan view, the low-concentration sterilizing water impinging on the 2 nd wall 542 becomes a bouncing water current bouncing off the 2 nd wall 542 and flows to the drain opening 521, and the state is temporarily maintained due to the temporary stop (or deceleration) of the rotation of the nozzle portion 10a, so that the tap water on the bathroom floor 520 can be more effectively flushed toward the drain opening 521.

Effective utilization of wall surface rebound water

The bathroom 500 of the present embodiment described above includes: a bath floor 520 of a bath room constituting the bath room 500; a drain outlet 521 provided in the bath floor 520 to drain the residual water on the bath floor 520; bath walls 541-544 erected from the periphery of the bath floor; a cleaning unit having a nozzle portion 10a provided at one side of the bathroom 500 and spraying cleaning water into the bathroom 500; and a control unit 30 for controlling the nozzle unit 10a of the cleaning unit. The controller 30 controls the nozzle unit 10a to perform the mold black suppression step S1, and the mold black suppression step S1 is a step of spraying the washing water so that the keratin that remains on the bathroom floor 520 and causes mold black generation is discharged from the bathroom floor 520 to the drain opening 521.

In the present embodiment, at least a part of the cleaning water sprayed from the nozzle portion 10a in the mold blackness suppression step S1 is also sprayed to the bathroom walls 541 to 544, and the cleaning water sprayed to the bathroom walls 541 to 544 bounces in the direction of the drain opening 521 due to the collision with the bathroom walls 541 to 544, thereby forming wall surface bouncing water that flows so as to lead the peeled cutin to the drain opening 521 while peeling off the cutin accumulated at the corner between the bathroom floor 520 and the bathroom walls 541 to 544.

According to such an embodiment, the cutin on the bathroom floor 520 can be significantly reduced and the generation of mold on the bathroom floor 520 can be significantly suppressed by performing the black mold suppressing step S1 of removing cutin remaining on the bathroom floor 520, which causes the generation of black mold.

In addition, in the black mold suppressing step S1, it is important to peel off the keratin remaining on the bathroom floor 520 and remove the keratin without remaining on the drain opening 521. When only water is sprayed to remove the cutin, it is important that the cutin does not adhere to the floor surface of the bath floor 520 again and reach the drain opening 521.

Here, if a plurality of nozzle portions with different angles are provided so as to face the drain opening 521, it is considered that the keratin is effectively removed without remaining. However, such a countermeasure requires a plurality of nozzles in the bathroom 500, which is not practical because of a space problem and the complexity of the water supply piping to each nozzle.

Although the single nozzle unit 10a is normally set on the bathroom 500 side as in the present embodiment, it is not easy to flow all of the washing water spilled from the nozzle unit 10a to the drain port 521, and there is a possibility that the keratin is caught by the wall of the bathroom 500 due to the force of the spilled washing water, and as a result, black mold may be generated.

Specifically, there are cases where keratin deposits are formed at the corners between the periphery of the bathroom floor 520 and the bathroom walls 541 to 544 by shower water or water that wets the body before bathing. When removing the accumulated keratin, if water is sprayed from one side, the force of peeling off the keratin from the corner cannot be applied in all directions, and at least in a part of the force, the water spraying force acts to press the keratin to the corner. Even when water is sprayed to a floor surface from which cutin is to be peeled off, the cutin peeled off from the floor surface by the water spray may be positively accumulated in the corner portion.

The present inventors have found that the excellent water spray method can smoothly remove cutin without increasing the cost and can collect cutin without driving the cutin to the wall side in the method of spraying washing water from one side of the bathroom floor 520.

Specifically, a part of the washing water is spilled from the nozzle portion 10a so as to positively collide with the wall. With such a simple structure, the direction of the washing water that is spilled from the nozzle portion 10a and does not face the drain opening 521 can be changed to the direction facing the drain opening 521. That is, by a simple study such as the bouncing of the wall of the bathroom 500, the spilled washing water can surely remove the keratin while flowing to the drain opening 521, and the removed keratin can be guided to the drain opening 521. The water bounced off the wall surface drops down from the wall surface to peel off cutin at the corner between the periphery of the bathroom floor 520 and the bathroom walls 541 to 544 (the wall side of the bathroom floor 520), and the cutin can be prevented from accumulating at the corner, and can be surely made to flow toward the drain outlet 521.

In the present embodiment, a table 530 is provided on the bathroom 500 side, and the nozzle portion 10a is disposed on the table 530 side. In addition, in the mold black suppression step S1, at least a part of the washing water sprayed from the nozzle unit 10a impinges on the bath wall 542 on the table 530 side, and in the mold black suppression step S1, at least another part of the washing water sprayed from the nozzle unit 10a impinges on the

bath walls

541, 543, 544 other than the bath wall 542 on the table 530 side, and the water potential of the wall surface-bound water generated by the washing water impinging on the bath wall 542 on the table side is higher than the water potential of the wall surface-bound water generated by the washing water impinging on the

bath walls

541, 543, 544 other than the bath walls on the table side.

The most horny substance remains in the area on the table 530 side where the person washes his/her body. In addition, there is a possibility that the cutin of the part is firmly adhered to the floor surface due to the stepping on of the user. Accordingly, by providing the nozzle portion 10a on the side of the table 530, the water potential of the washing water for washing the bath room floor 520 on the side of the table 530 can be maintained high. This enables even a firmly adhered cutin to be reliably removed.

In the present embodiment, the nozzle portion 10a sprays the washing water onto the bathroom walls 541 to 544 and the bathroom floor 520 while rotating, and the washing water sprayed onto the bathroom floor 520 collides with the wall surface bounce water generated by the washing water sprayed onto the bathroom walls 541 to 544, and does not directly act on the corner portions between the periphery of the bathroom floor 520 and the bathroom walls 541 to 544.

Since the washing water bounced off by the wall is diffused by the bounce, a high degree of washing control is required to surely remove the keratin without leaving the keratin on the entire surface of the bath floor 520. Further, if wash water is spilled from one side of the bathroom floor 520, the wash water flow directed to the corner facing the one side collides with the bathroom wall (orthogonally), and thus acts to press the horn to the corner. Thus, the corner cutin and the floor cutin can be surely removed by not only removing the corner cutin by the wall surface bounce water but also cleaning the bathroom floor 520 by the cleaning water which has been applied to the bathroom floor 520 and causing the cleaning water which has been applied to the bathroom floor 520 to collide with the wall surface bounce water generated by the cleaning water which has been applied to the bathroom walls 541 to 544 and which has been sprayed first so as not to exert the function of pressing the cutin against the corner. Further, since it is sufficient to arrange 1 nozzle unit 10a, the cost can be greatly reduced and the construction is easy.

The nozzle portion 10a of the present embodiment has a nozzle opening that is longer in the vertical direction than in the lateral direction.

For example, when the nozzle 10a sprays washing water while rotating, the bounce angle of the bathroom walls 541 to 544 gradually changes. If the wall surface bouncing water with the changed reflection angle blocks the bouncing, there is a possibility that the removal of the keratin at the corner is poor or a force pressing the keratin against the corner is applied. In other words, in any case, it is preferable that the shower walls 541 to 544 stably bounce.

Accordingly, since the

nozzle openings

11a and 12a longer in the vertical direction than in the lateral direction are used, it is effective to narrow and stabilize the water application position. This can suppress the influence of the change in the reflection angle of the wall surface reflected water, and can stably remove the keratin. In addition, the water is sprayed to the bath room walls 541 to 544 and the water is sprayed to the bath room floor 520 through one nozzle part 10 a. Furthermore, since the nozzle portion 10a is provided for controlling the wall surface bouncing water generated when the washing water having impinged on the bath floor 520 collides with the washing water having impinged on the bath walls 541 to 544, the water application timing can be stabilized, and the control can be performed reliably. Thus, it is possible to more reliably prevent the horn from being pressed.

Effective utilization of water sprinkle without overtaking wall surface rebound water

From another viewpoint, the bathroom 500 of the present embodiment described above includes: a bath floor 520 of a bath room constituting the bath room 500; a drain outlet 521 provided in the bath floor 520 to drain the residual water on the bath floor 520; bath walls 541-544 erected from the periphery of the bath floor; a cleaning unit having a single nozzle portion 10a installed at one side of the bathroom 500 to spray cleaning water onto the bathroom floor 520 while rotating; and a control unit 30 for controlling the nozzle unit 10a of the cleaning unit, wherein the control unit 30 controls the nozzle unit 10a to perform a black mold suppressing step S1, and the black mold suppressing step S1 is a step of spraying the cleaning water so that the horny substance remaining in the bathroom floor 520 and causing black mold is discharged from the bathroom floor 520 to the water outlet 521.

The washing water sprayed simultaneously from the single nozzle unit 10a in the mold blackness suppression step S1 is controlled so as to be watered: a 1 st water adhering part adhering water on the lower parts of the bathroom walls 541-544; and a 2 nd water-applying part applying water on the floor surface of the bath room floor 520.

The No. 1 water landing part generates wall surface bouncing water bouncing on the lower part of the bathroom walls 541-544, and the wall surface bouncing water turns to a direction toward the water outlet 521, and flows toward the water outlet 521 on the floor surface of the bathroom floor 520 while removing horns remaining on the floor surface of the bathroom floor 520.

When the control unit 30 performs the mold blackness suppressing step S1, the rotation of the nozzle unit 10a is controlled so as to follow the region where the wall surface bouncing water flows, so that the wall surface bouncing water is not overtaken by the cleaning water that has been sprayed at the predetermined 1 st time and has been adhered to the 1 st water adhering unit, and the wall surface bouncing water that has been generated is caused to flow on the floor surface of the bathroom floor 520 at the predetermined 2 nd time later.

Specifically, a part of the washing water can be spilled from the nozzle portion 10a so as to positively collide with the wall. With such a simple structure, the direction of the washing water that is spilled from the nozzle portion 10a and does not face the drain opening 521 can be changed to the direction facing the drain opening 521. That is, by a simple study such as the bouncing of the wall of the bathroom 500, the spilled washing water can surely remove the keratin while flowing to the drain opening 521, and the removed keratin can be guided to the drain opening 521. The water bounced off the wall surface drops down from the wall surface to peel off cutin at the corner between the periphery of the bathroom floor 520 and the bathroom walls 541 to 544 (the wall side of the bathroom floor 520), and the cutin can be prevented from accumulating at the corner, and can be surely made to flow toward the drain outlet 521.

The inventors of the present invention have found that it is effective to control the rotation of the nozzle portion 10a, particularly the rotation speed. Since the wall surface rebound water flows on the bathroom floor 520 at first, the residual cutin is contained most. By spraying water so as not to overtake the wall surface, return of the keratin, which has not been easily removed, to the area where washing has been completed, or reattachment of the keratin is suppressed. By further sprinkling the washing water to the bath floor 520 in this manner, the cutin removing property can be improved. Thus, even 1 nozzle unit 10a can maintain the "clean state" of the bath room floor 520 for a long time.

Further, the control unit 30 of the present embodiment controls the rotation of the nozzle unit 10a such that the cleaning water sprayed to the 2 nd water-binding portion does not overtake and merges with the wall surface-bound water generated from the cleaning water that has been bound to the 1 st water-binding portion at the 1 st time at the 2 nd time after the 1 st time, and compensates for the diffusion and the water level decrease that occur in the process of the wall surface-bound water flowing on the floor surface of the bathroom floor 520.

The washing water sprayed to the bath floor 520 is diffused in the course of flowing on the bath floor 520, and the water level must be lowered. The cutin which is not easily removed due to such a water level decrease may be attached to the floor of the bath room again. Then, the removal performance of the cutin can be improved by controlling the rotation of the nozzle unit 10a so that the water is attached to the 2 nd water attachment unit at a later time and the water is joined to the wall surface-bound water generated by the washing water attached to the 1 st water attachment unit without overtaking (catching up, following). In particular, by suppressing the drop in water level accompanying diffusion, reattachment of the cutin can be effectively suppressed.

Further, the controller 30 of the present embodiment controls the rotation of the nozzle unit 10a such that the cleaning water sprayed to the 2 nd water-binding segment at the 2 nd time after the 1 st time does not overtake and merges with the wall surface bound water generated from the cleaning water that has bound water to the 1 st water-binding segment at the 1 st time, and applies a propulsive force to the wall surface reflected water to flow in the direction of the drain opening 521.

The thrust force is applied to maintain or increase the speed of the wall surface rebounding water (drainage water flow) after the confluence. In this case, the feed rate of keratin contained in a large amount in the water rebounded from the wall surface to the drain opening 521 can be increased. If the moving speed is low, not only the removal force for keratin is reduced, but also the reattachment of keratin is increased, and by increasing the moving speed, the time can be shortened, and the removal force for keratin can be increased and the reattachment can be prevented.

The control unit 30 of the present embodiment is configured to change the rotation speed of the nozzle unit 10a at a predetermined position.

The rebounded force of the cleaning water is changed by the rebounding angle of the bathroom walls 541-544. Further, if the water application distance is long, the water application energy is reduced, the force of the water rebounded by the wall is also reduced, and the flow speed of the washing water after application of water is reduced. According to this tendency, the removal force of the keratin and the reattachment prevention performance can be maintained or improved by adjusting the number of rotations of the nozzle portion 10a and adjusting the amount of water sprayed.

The controller 30 of the present embodiment controls the rotation of the nozzle 10a such that the rotation speed of the nozzle 10a is lower when the flush water is applied to the region distant from the nozzle 10a than when the flush water is applied to the region close to the nozzle 10 a.

If the water application distance is long, the water application energy is reduced and the force of the water rebounded from the wall is also reduced, so that the flow speed of the washing water after application of water is reduced. According to this tendency, the removal force of the keratin and the reattachment prevention performance can be maintained or improved by adjusting the number of rotations of the nozzle portion 10a and adjusting the amount of water sprayed.

Pulsating effect of flowing water

The above-described cleaning device 100 according to the present embodiment is a bathroom floor cleaning device for cleaning a bathroom floor 520 having a drain opening 521 in addition to a bathroom constituting a bathroom 500, and includes: a cleaning unit having a nozzle portion 10a for spraying cleaning water onto the bath floor 520; and a control unit 30 for controlling the nozzle unit 10 a. The controller 30 controls the nozzle unit 10a to perform the mold black suppression step S1, and the mold black suppression step S1 is a step of spraying the washing water so that the keratin that causes mold black generation remaining on the bathroom floor 520 is discharged from the bathroom floor 520 to the drain opening 521.

In the present embodiment, when the mold black suppressing step S1 is performed, the washing water sprayed to the bath room floor 520 flows while generating a continuous water wave until reaching the drain opening 521, so that energy for peeling off the keratin attached to the bath room floor 520 is generated by the rising energy of the water wave.

In the black mold suppressing step S1, it is important to peel off the keratin remaining on the bathroom floor 520 and remove the keratin without remaining in the drain opening 521. When only water is sprayed to remove the cutin, if the cutin is adhered to the bathroom floor 520, a measure such as spraying a large amount of washing water is required. However, if a large amount of washing water is spilled, it is disadvantageous in terms of cost, and since the washing water cannot enter the bathroom 500, there is also a problem in terms of convenience that the long-time restriction of entering the room is required.

The present inventors have found, as a result of long-term studies, a technique that allows keratin in a state of adhering to the bathroom floor 520 to be cleanly peeled off in a short time without spilling a large amount of washing water. Meanwhile, a technique that can be solved has also been found for solving the problem that the cutin is attached to the floor of the bath room again during the transportation of the cutin to the drain outlet 521 after being peeled off.

Specifically, in the present embodiment, the washing water sprayed on the bath floor 520 flows while forming a continuous water wave in the process of reaching the drain opening 521. The amplitude generated by the water wave generation generates energy toward the upper side of the floor surface of the bath room floor 520. By which the cutin attached to the bath floor 520 can be peeled off from the bath floor 520. When the keratin peels off from the bath floor 520, the keratin floats on the water surface or is contained in the water, and is therefore less affected by the downward energy associated with the water wave amplitude. That is, the influence of rising energy of water waves is significantly large for cutin.

It is important that the water wave (pulse) is generated to peel off the keratin smoothly and cleanly. In addition, it is particularly effective that the water wave is made continuously in the process of reaching the drain opening 521. This allows cutin to be removed without fail over the entire surface of the bathroom floor 520, and allows the removed cutin to be continuously subjected to an increasing energy, thereby more reliably preventing the cutin from adhering to the bathroom floor 520 again.

In the present embodiment, the washing water sprayed from the nozzle portion 10a in the mold blackness suppression step S1 is controlled so as to be watered: a 1 st water-receiving part (referred to as 1 st flowing water, see fig. 22) for first contacting the cutin adhered to the bath floor 520 and peeling off the cutin from the bath floor 520; and a 2 nd water supply part (2 nd flowing water, see fig. 22) at a passing part of the washing water supplied to the 1 st water supply part on the bath room floor 520.

In the present embodiment, the controller 30 controls the rotation of the nozzle portion 10a such that the propulsive force toward the drain opening 521 is increased by merging the washing water having been wetted in the 1 st water-binding portion and the washing water having been wetted in the 2 nd water-binding portion while the washing water having been wetted in the 1 st water-binding portion flows through the passage portion of the bathroom floor 520 in the step of performing the mold suppressing step S1.

In the bathroom 500, the water level of the wash water drops as the wash water spilled out moves on the bathroom floor 520 toward the drain opening 521 while spreading widely on the bathroom floor 520. Since the water level is lowered and the cutin comes into contact with the bathroom floor 520, the cutin is easily reattached (see fig. 30). According to the present embodiment, the water level can be raised by the confluence. That is, the effect of preventing the reattachment of the cutin can be enhanced not only by the rising energy of the water wave but also by the effect of increasing the water level.

In addition, in the present embodiment, the rising energy of the water wave can be generated reliably. That is, when the washing water having been supplied to the 1 st water supply segment and the washing water having been supplied to the 2 nd water supply segment are merged, the washing water having been supplied to the 1 st water supply segment merges so as to increase the potential of the washing water having been supplied to the 2 nd water supply segment, and the rising energy of the water wave of the washing water having been supplied to the 1 st water supply segment is reliably generated, by controlling the rotation speed of the nozzle unit 10a so that the washing water having been supplied to the 1 st water supply segment increases the propulsive force in the direction toward the drain opening 521 with respect to the washing water having been supplied to the 2 nd water supply segment (see fig. 31). Thus, the washing water applied to the 1 st water applying part peels off more horny substances, and can remove the horny substances from the floor of the bath room more efficiently.

In the present embodiment, the washing water sprayed from the nozzle portion 10a in the mold blackness suppressing step S1 is controlled so as to be supplied to the 3 rd water supply portion, and the 3 rd water supply portion is the 2 nd passing portion on the bath room floor 520 after the washing water supplied to the 1 st water supply portion and the 2 nd water supply portion join together. Then, the controller 30 controls the rotation of the nozzle unit 10a such that, when the mold black suppressing step S1 is performed, the washing water having been supplied to the 1 st water supplying unit and the washing water having been supplied to the 2 nd water supplying unit are merged and then flow through the 2 nd passing portion of the bath floor 520, the washing water having been supplied to the 1 st and 2 nd water supplying units further increases the propulsive force in the direction of the drain opening 521 due to the further merging of the washing water having been supplied to the 3 rd water supplying unit (see fig. 32).

In the present embodiment as described above, the rising energy of the water wave can be made more reliably. That is, since the washing water having been supplied to the 1 st and 2 nd hydrating segments are merged and then merged with the washing water having been supplied to the 3 rd hydrating segment, the rotation speed of the nozzle 10a is controlled so that the propulsive force toward the drain opening 521 is further increased. Thus, the washing water applied to the No. 1, No. 2 and No. 3 water applying parts can peel off more horny substances, and can remove the horny substances on the floor of the bathroom more efficiently. After that, the washing water having been condensed in the 4 th condensed water portion and thereafter may be sequentially merged to more reliably generate the rising energy of the water wave in the 1 st condensed water portion.

As shown in fig. 29(b), the bath room floor 520 of the present embodiment is provided with a groove 522 extending in a direction non-parallel to the direction of the 1 st water receiving part or the 2 nd water receiving part to which water is applied.

Thus, when the spilled washing water (washing water attached to the 1 st or 2 nd water attachment unit) collides with the bath floor 520 or flows on the bath floor 520, the washing water collides with the groove 522 to form water waves (water pulses) in the vertical direction. Since such water flow is disturbed, the cutin is easily peeled off from the bath floor 520. In addition, even when the washing water spreads and flows on the bath floor 520, the water waves suppress the keratin from being attached to the floor again. This enables cutin to be reliably removed from the floor even when the water pressure and the amount of the spilled washing water are small.

When the washing water sprinkled from the nozzle 10a is flush with the 2 nd water-receiving portion of the shower wall 541 facing the nozzle 10a, the controller 30 of the present embodiment controls the rotation of the nozzle 10a so as to reduce the rotation speed of the nozzle 10 a.

If the sprinkling distance is long, the sprinkling energy is reduced, and the flow speed of the washing water after the application of water is reduced. By adjusting the rotation speed of the nozzle section 10a according to such a tendency, particularly the tendency of the 2 nd water-binding portion, it is possible to easily adjust the continuous water wave formed by the washing water merged in the 1 st water-binding portion, and it is possible to improve the removal force of the keratin and to maintain or improve the reattachment prevention performance.

Effect of large and small water waves

In the present embodiment, the continuous water waves include at least 2 types of water waves, i.e., small water waves having a relatively small amplitude and large water waves having a relatively large amplitude.

According to the present embodiment, the small water waves mainly act as water waves for preventing reattachment, and the large water waves act as water waves that generate a large force for peeling off cutin from the floor surface. For example, by optimizing the location of the generation of a large water wave, it is possible to target a location where keratin is likely to accumulate. This enables to effectively remove the horny substance that is difficult to be removed by the rising energy of the small water wave, and to further improve the removal performance of the horny substance.

In the present embodiment, a small water wave (mainly caused by the pulse of the stepping motor) and a large water wave (mainly caused by the confluence of flowing water) are generated in a superposed manner, and the washing water sprayed on the bath floor 520 flows so that the frequency of the small water wave is greater than the frequency of the large water wave in the process of reaching the drain opening 521.

In a state where only the washing water is made to flow regularly on the floor surface of the bath floor 520, the cutin is not easily peeled off, and the peeled cutin is easily attached to the bath floor 520 again in some cases. Accordingly, in order to effectively prevent the reattachment of the horny layer, the frequency of generation of the small water wave is made higher than the frequency of generation of the large water wave as in the present embodiment, and the small water wave of high frequency, which can be referred to as continuity, is generated. On the other hand, the rim of the bathroom floor 520 where keratin is likely to accumulate may be difficult to peel off due to strong adhesion force only by spraying washing water. By making a large water wave corresponding to such a region, cutin can be removed more surely.

The small water waves and the large water waves of the present embodiment are generated by changing the rotational feed speed of the nozzle portion 10 a.

As a method of generating the water wave, various methods may be adopted, and for example, a method of applying vibration to the floor surface of the bath room floor 520, a method of generating vibration by an air flow, or the like may be adopted. However, the water waves can be generated more easily by changing the rotational feed speed of the rotating nozzle portion 10 a. In this case, the configuration is simple and inexpensive, and the most suitable configuration in the bathroom 500 can provide more reliable effects.

In the present embodiment, the washing water sprayed simultaneously from the nozzle unit 10a in the mold blackness suppression step S1 is controlled so as to be: a 1 st water adhering part adhering water on the lower parts of the bathroom walls 541-544; and a 2 nd water-receiving part which is attached with water on the floor surface of the bathroom floor 520, the washing water attached with water on the 1 st water-receiving part is rebounded by the lower part of the bathroom walls 541-544 to generate wall surface rebounded water, the direction of the wall surface rebounded water is changed to the direction of the water outlet 521, and the washing water flows towards the water outlet 521 on the floor surface of the bathroom floor 520 while removing horny substances remained on the floor surface of the bathroom floor 520.

When the control unit 30 performs the mold blackness suppressing step S1, the rotation of the nozzle unit 10a is controlled so as to follow the region where the wall surface reflected water flows, so that the wall surface reflected water generated by the 1 st water adhering unit on which the washing water spilled at the predetermined 1 st time flows on the floor surface of the bathroom floor 520 receives a propulsive force moving toward the drain opening 521 due to the confluence of the washing water at the 2 nd water adhering unit on which the washing water spilled at the predetermined 2 nd time thereafter flows. The large water wave is generated by the combination of the wall surface bouncing water and the washing water sprayed at the predetermined 2 nd time onto the 2 nd water-binding portion.

According to the present embodiment, by a simple study such as the bouncing of the bathroom walls 541 to 544, the spilled washing water can surely remove the keratin while flowing to the drain opening 521, and the removed keratin can be guided to the drain opening 521. By this wall surface, water rebounds, so that keratin is not deposited on the wall side of the bathroom floor 520, and the keratin can be reliably made to flow toward the drain opening 521.

Horny substances are likely to be deposited at the corners between the periphery of the bathroom floor 520 and the bathroom walls 541 to 544, and it is difficult to generate a force for peeling off the horny substances deposited at the corners by sprinkling water. However, since the wall surface reflected water flows so as to peel off the keratin, the keratin can be peeled off even in an area where the keratin is difficult to peel off, such as a corner.

Further, the wall surface reflected water receives a propulsive force moving toward the outlet 521 due to the confluence of the washing water of the 2 nd water binding part with the water sprayed at the subsequent predetermined 2 nd time, and even in this way, the keratin can be reliably conveyed to the outlet 521 and removed, and the reattachment of the keratin can be prevented.

In addition, since the large water wave is generated by the confluence of the wall surface reflected water and the washing water sprayed at the 2 nd water spray part at the predetermined 2 nd time, the large water wave can be reliably generated at the target position, and the cutin can be effectively peeled even in the region where the cutin is difficult to peel. In addition, this method is also relatively easy because the feed rate of the rotation of the nozzle section 10a needs to be controlled so as to correspond to the merging timing.

In the bathroom 500, the water level of the sprayed washing water drops because the washing water moves forward while spreading widely on the bathroom floor 520 while moving toward the drain opening 521 on the bathroom floor 520. Since the water level is lowered and the cutin comes into contact with the bathroom floor 520, the cutin is easily reattached. According to the present embodiment, the water level can be raised by the confluence.

That is, the effect of preventing the reattachment of the cutin can be enhanced not only by the rising energy of the water wave but also by the effect of the increase of the water level.

As described above, the rotation of the nozzle portion 10a in the present embodiment is driven by the stepping motor. The small water waves are generated because a minute speed change is imparted to the rotation of the nozzle portion 10a by the speed change of the stepping motor.

It is not easy to control the generation of the small water waves and the large water waves by overlapping them. In particular, since large water waves require timing, detailed design and control are required. However, since the small water wave has a property that it is generated substantially continuously in order to prevent the reattachment of the keratin, it is preferable to generate the small water wave with a simple structure.

In the present embodiment, since the stepping motor is a driving system of 1-step and 1-step feeding, a speed change is automatically (mechanically) generated every time 1 step is fed. In other words, the intermittent feeding system. Even if the speed change of the stepping motor is small and cannot be visually confirmed, if the enlargement is performed by the rotation of the nozzle portion 10a, the enlargement is large at the water landing position, and a large speed change can be exhibited. Then, the change in the water spray amount occurs at the water landing position due to the speed change, and a small water wave can be generated.

That is, if the stepping motor as in the present embodiment is used, small water waves can be generated simply by automatically feeding the nozzle portion 10 a. In other words, a mechanical structure in which minute vibrations are amplified by the nozzle portion 10a using a stepping motor can easily generate small water waves which are practically useful.

Further, the nozzle portion 10a according to the present embodiment is preferably rotated again after temporarily stopping rotation at a predetermined position as described above with reference to fig. 26 and the like.

In order to optimize the merging timing in all the areas of the wall surface rebounded water flowing toward the drain opening 521 on the bath floor 520, there is a possibility that the nozzle section 10a has to be rotated very slowly. This is because the flow velocity of the water rebounded from the wall surface is slow in the region where the repulsive force is weak. It is not easy to control the rotation of the nozzle portion 10a very slowly, that is, if water is erroneously sprayed during the slow movement, the confluence is likely to occur at an incorrect timing, and even the horns may be returned to the upstream side. Thus, the timing can be more easily and accurately optimized by stopping the feed once.

Further, the control unit 30 is more preferably capable of performing both temporary stop control at the predetermined position of the nozzle portion 10a and speed variable control in each predetermined region of the nozzle portion 10 a.

The control of the rotation speed of the nozzle section 10a can be performed with a higher degree of freedom by performing both the temporary stop control and the speed variable control, thereby performing the control of the preferable merging timing.

The controller 30 of the present embodiment controls the rotation of the nozzle 10a so that the rotation speed of the nozzle 10a is lower when the flush water is applied to the region distant from the nozzle 10a than when the flush water is applied to the region close to the nozzle 10a (see fig. 8 to 11, 27, and 28).

Preferably, the predetermined position is a position where the rinsing water is applied to the corner of the bath floor 520 (see fig. 26).

In a region where the sprinkling distance is long, the flow velocity of the wash water is low, and therefore the flow velocity of the wall surface-bound water is also low. Also, the washing water is bounced by 2 walls at four corners, i.e., corners, of the bath floor 520. In addition, since keratin is likely to accumulate in the corners of the four corners, it is important to smoothly discharge keratin from the corners and to prevent the washing water sprayed thereafter from flowing back to the No. 2 water-landing part.

In such corner portions, it is preferable that the rotation of the nozzle portion 10a is stopped to promote the wall surface bouncing water to flow slowly in the direction of the drain opening 521, and that the wall surface bouncing water is made to flow sufficiently in the direction of the drain opening 521, and then the later-sprinkled adhesion water is merged with the cleaning water in the 2 nd adhesion water portion, to effectively avoid the cleaning water from returning to the corner portions.

If the rotation of the nozzle section 10a is stopped and the confluence is delayed, although there is a possibility that the keratin might be reattached due to the lowering of the water level, a sufficient amount of water can be expected due to the concentration of the sprinkled water in the corner portions, and it can be confirmed that reattachment due to the lowering of the water level does not occur even if the confluence is delayed.

In addition, a drain slope toward the drain opening 521 is set on the bath room floor 520 of the present embodiment. Further, the predetermined position may be a position corresponding to a corner portion of the bath floor 520 downstream of the drainage gradient as the position of the flush water of the washing water, and may be a position corresponding to another corner portion of the bath floor 520 upstream of the drainage gradient as the position of the flush water of the washing water, and the nozzle portion 10a may be temporarily stopped for a shorter time than the stop time at the predetermined position or decelerated.

In the corner portion on the downstream side where the drain opening 521 is provided, for example, the keratin collected from the upstream side is likely to be accumulated. The corner is a region where the drainage gradient is completed, and is a region where the washing water collides with the wall, reaches zero speed, then moves further in the lateral direction, and advances toward the drain opening 521. Therefore, since the washing water is scattered by the collision with the wall and the flow is slow, it is preferable that the washing water scattered later merge at the 2 nd water landing part at a timing after the wall surface bouncing water becomes stable and sufficiently starts to move laterally in the direction of the drain opening 521. Therefore, at such a position corresponding to the corner portion, it is preferable that the rotation of the nozzle portion 10a is temporarily stopped. In this case, the washing water sprayed further downstream to the 2 nd water deposition part can cleanly remove the washing water containing the scattered keratin.

In order to improve the removal performance of keratin at the upstream corner, the device is preferably stopped only temporarily for a time shorter than the stop time at the position corresponding to the downstream corner, or decelerated.

Countermeasure against contamination of nozzle

In the above embodiment, when the black mold suppressing step S1 is started, the nozzle 10a starts to rotate from a position (initial position P1) at which the nozzle 10a can direct the tap water substantially vertically toward the 2 nd wall 542 of the lower portion of the table 530. Therefore, even if the nozzle portion 10a is contaminated when the black mold suppressing step is started, and the influence of the temporary disturbance of the tap water in the water discharge direction, which may occur due to the contamination, appears only when the water is discharged substantially perpendicularly to the 2 nd wall 542, the contamination is immediately scattered and disappears due to the discharged tap water, and therefore does not appear when the water is discharged to the central portion of the bathroom floor 520 thereafter. Therefore, even if the nozzle portion is temporarily stained, the water discharge control in the mold black suppression step S1 can be performed in the center portion of the bath floor 520 according to the design.

According to the present invention, the initial position at which the black mold suppressing step S1 is started is not limited to the position at which the tap water can be applied substantially perpendicularly to the 2 nd wall 542, and the above-described effects can be obtained if the tap water can be applied within a range of ± 10 ° around the closest portion of the 2 nd wall 542 to the nozzle section 10 a.

In addition, as in the present embodiment, when the table 530 is provided adjacent to a part of the bath room wall, the nozzle portion 10a is preferably disposed below the table 530. At this time, since the nozzle portion 10a is hidden by the table 530, the nozzle portion 10a is prevented from being contaminated by residue of soap, shampoo, or the like used for washing the human body. At this time, the shortest distance between the 2 nd wall 542 and the nozzle portion 10a is, for example, 80cm or less.

Further, as in the present embodiment, the nozzle portion 10a is preferably disposed at a position lower than the height of the bath wall. At this time, if the jetting direction of the tap water or the low-concentration sterilizing water from the nozzle portion 10a is designed to be horizontal or lower, the tap water or the low-concentration sterilizing water jetted from the nozzle portion 10a does not enter the bath tub over the bath tub wall.

Relation of AND gate

In addition, in general, bathroom 500 further includes: an entrance and an exit; and a door for opening and closing the entrance. Preferably, the controller 30 is configured to apply tap water from the nozzle portion 10a to the area in front of the door on the bath floor 520 so as not to spray water to the door when performing the mold black suppressing step S1, and to apply low-concentration sterilizing water from the nozzle portion 10a to the area in front of the door on the bath floor 520 so as not to spray water to the door when performing the mold pink suppressing step S3.

At this time, even if the mold blacking out step S1 and the mold pink inhibiting step S3 are performed in a state where the door is opened, it is possible to prevent tap water and low-concentration sterilizing water from splashing out of the bathroom 500.

Claims

1. A bathroom is provided with:

a bath room floor;

a drain outlet for draining residual water on the floor of the bath room;

a bathroom wall upstanding from a periphery of the bathroom floor;

a washing unit for spraying washing water to the floor of the bath room;

and a control section for controlling the cleaning unit, characterized in that,

the control unit controls the cleaning unit to perform a mold black suppression step of discharging keratin remaining on the bathroom floor from the bathroom floor to the drain opening,

the black mold inhibition step includes: a step 1 of spraying the flowing water obtained by peeling off the keratin from the floor of the bath room; and a 2 nd flowing water sprinkling step of conveying the peeled cutin to the water outlet.

2. The bathroom of claim 1,

the 1 st flowing water flows on a specified part of the floor of the bath room,

the 2 nd flowing water flows over the predetermined portion after a predetermined time has elapsed from the 1 st flowing water reaching the predetermined portion.

3. The bathroom of claim 2,

the flow rate of the 2 nd flow water to the drain opening is higher than the flow rate of the 1 st flow water to the drain opening at the predetermined portion,

the 2 nd flowing water merges with the 1 st flowing water until reaching the drain opening.

4. A bathroom according to claim 2 or 3,

the cleaning unit is provided with a nozzle part,

the nozzle unit is configured to spray washing water to the bathroom wall and the bathroom floor while rotating,

the control unit controls the rotation of the nozzle unit so that the flow speed of the 2 nd flow of water toward the drain opening is faster than the flow speed of the 1 st flow of water toward the drain opening at the predetermined position.

5. The bathroom of claim 4 wherein the rotational speed of the nozzle is variable at predetermined locations.

6. The bathroom according to claim 4, wherein the control portion controls the rotation speed of the nozzle portion to be lower when the washing water is impinged on the area away from the nozzle portion than when the washing water is impinged on the area close to the nozzle portion.

7. The bathroom of claim 4 wherein said nozzle portion has a nozzle opening that is longer in the up-down direction than in the lateral direction.

8. The bathroom of claim 1,

in the black mold suppressing step, at least a part of the 1 st flowing water sprinkled from the cleaning unit is applied to the wall of the bath,

the No. 1 flowing water which is attached to the bathroom wall rebounds towards the water outlet due to the collision with the bathroom wall, so as to generate wall surface rebounding water,

the wall surface rebounded water flows in a manner of guiding the peeled cutin to the water outlet while peeling off the cutin accumulated at the corner between the periphery of the bathroom floor and the bathroom wall.

9. The bathroom of claim 8,

a table is arranged on one side of the bathroom,

the cleaning unit is arranged on the table side,

in the black mold inhibition step, the black mold is inhibited,

at least a part of the No. 1 flowing water spilled from the washing unit is applied to the bathroom wall on the side of the table,

at least a part of the 1 st flowing water hits a bathroom wall other than the counter side bathroom wall,

the wall surface reflected water generated by the 1 st flowing water has a stronger water potential than the wall surface reflected water generated by the 2 nd flowing water.

10. The bathroom of claim 8 wherein said 2 nd flowing water collides with wall bounce water generated by said 1 st flowing water and does not directly act on a corner between the periphery of the bathroom floor and the bathroom wall.

11. The bathroom of claim 1,

in the step of inhibiting black mold, the 1 st flowing water is attached to the 1 st water attaching part positioned at the lower part of the bathroom wall, the 2 nd flowing water is attached to the 2 nd water attaching part positioned on the floor surface of the bathroom floor,

the 1 st flowing water attached to the 1 st water attaching part is rebounded by the lower part of the bathroom wall to generate wall surface rebounded water,

the water rebounded from the wall surface is converted into a direction toward the drain opening, and flows toward the drain opening on the floor surface of the bathroom floor while removing the horns remaining on the floor surface of the bathroom floor,

the control unit controls the cleaning unit so as to follow a region in which the wall surface bouncing water flows, so that the wall surface bouncing water is not overtaken by the 2 nd flowing water which is sprinkled at the 2 nd predetermined time later, in a process in which the wall surface bouncing water generated by the 1 st flowing water which is sprinkled at the 1 st predetermined time flows on the floor surface of the bathroom floor.

12. The bathroom according to claim 11, wherein the control unit controls the cleaning unit in such a manner that the 2 nd flowing water merges with the wall surface bouncing water generated from the 1 st flowing water without overtaking, and compensates for diffusion of the wall surface bouncing water and a decrease in water level.

13. The bathroom according to claim 11, wherein the control unit controls the cleaning unit in such a manner that the 2 nd flowing water merges with the wall surface bouncing water generated from the 1 st flowing water without overtaking, and that a propulsive force flowing in the direction of the drain opening is applied to the wall surface bouncing water.