JP2002106033A - Private parts washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a decline of antibacterial property even in a state of low chlorine density in city water. SOLUTION: This private parts washing device using jetting wash water to wash private parts is provided with a water supply line 21 for supplying wash water, having a filter part 14 with a filter medium 16a disposed. The water supply line 21 is constituted to hold a heavy metal antibacterial agent 17 dissolved in the wash water filtered by the filter part 14, independently of the filter medium 16a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a local cleaning device for cleaning a local part such as an anus and a part around the anus.

[0002]

2. Description of the Related Art Conventionally, a local cleaning apparatus of this type has a cleaning water tank, a cleaning nozzle for spraying the cleaning water to clean a local area (anus, an anus or the like), and a filtering unit provided with a filtering material. And a water supply path for supplying the cleaning water, and the cleaning water filtered by the filtration unit is jetted to clean the local area.

[0003] The filtration unit is disclosed in, for example, Japanese Patent Application Laid-Open
As shown in FIG. 11, the filter cartridge 101 and the apparatus main body 102 are provided.

The filter cartridge 101 has a double structure composed of an inner cylinder 101a and an outer cylinder 101b having water permeability. Both ends of the filter cartridge 101 are closed by caps 101c and 101d.
A water inlet 101e communicating with a is opened, and a filter medium 101f made of carbon fiber with silver powder adhered thereto via a binder is filled between the inner cylinder 101a and the outer cylinder 101b. The apparatus main body 102 is formed in a hollow shape and is separable, having an inlet 102a on one side and an outlet 102b on the other side.

[0005] The filtering section, that is, Japanese Patent Application Laid-Open
In the filtration unit disclosed in Japanese Patent Application No. 258273, the filter cartridge 101 is loaded in the apparatus main body 102 so that the water guide port 101e is connected to the above-described inlet port 102a so as to be able to enter and exit, and flows in from the inlet port 102a. All the tap water is caused to flow out of the outlet 102b through the filter cartridge 101.

[0006]

In the above-mentioned conventional local cleaning apparatus, the above-mentioned filtering section allows the silver powder to function as an antibacterial agent even when chlorine in tap water is removed. Antimicrobial properties can be improved.

However, the filter material 101f
Is obtained by adhering silver powder to carbon fiber via a binder.If an organic suspension adheres to carbon fiber, even the surface of silver powder is covered by the organic suspension. Therefore, the antibacterial property may be reduced.

[0008] The present invention has been made in view of the above points, and an object of the present invention is to provide a local cleaning apparatus which does not decrease the antibacterial property even in a state where tap water contains little chlorine.

[0009]

According to a first aspect of the present invention, there is provided a local cleaning apparatus having a filtration unit provided with a filtering material and having a water supply path for supplying cleaning water. In a local cleaning apparatus that cleans a local area by injecting cleaning water filtered by a filtration unit, the water supply path holds a heavy metal antibacterial agent to be dissolved in the cleaning water as a separate body from the filter material. It has a configuration.

[0010] The local cleaning apparatus according to the second aspect is the first aspect.
In the local cleaning device described above, the water supply path is configured such that a tank for storing the cleaning water is provided upstream of a jetting point of the cleaning water, and the antibacterial agent is held upstream of the tank. .

[0011] The local cleaning device according to the third aspect is the first aspect.
Alternatively, in the local cleaning device according to claim 2, the water supply path has a configuration in which the filtering section holds the antibacterial agent.

According to a fourth aspect of the present invention, there is provided a local cleaning apparatus according to the first aspect.
4. The local cleaning device according to claim 3, wherein the antibacterial agent is made of at least one of silver and a silver compound. 5.

According to a fifth aspect of the present invention, there is provided a local cleaning apparatus according to the first aspect.
5. The local cleaning device according to claim 4, wherein the water supply path has a configuration in which a heavy metal adsorbent is disposed between a location where the antibacterial agent is held and a location where the cleaning water is ejected.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 1 denotes an apparatus main body having a support portion 1a projecting forward on both sides thereof. Inside the support portion 1a,
The toilet seat 2 and the cover 3 are vertically rotatably supported by pivotally connecting the mounting piece 2a of the toilet seat 2 and the attachment piece 3a of the cover 3. In addition, the apparatus main body 1 supports a nozzle 9 which is a jetting point for jetting a washing water for washing a local part (anus and a part around the anus) so as to be stretchable.

Further, the apparatus main body 1 is integrally provided with an operation means housing section 1b for housing various operation means described later for operating as a local cleaning apparatus. The operating means storage portion 1b is formed integrally with the outer surface of the one support portion 1a, and is located on the side of the toilet seat 2 and the lid 3. An operation unit 4 having a local washing operation key 4a, a washing water flow rate operation key 4b, a washing water temperature operation key 4c, a toilet seat temperature operation key 4d, and a hot air operation key 4e is provided on the upper surface of the operating means storage unit 1b.
Is provided.

The local cleaning operation key 4a is used for the local cleaning water 23.
This operation is performed when the local area is cleaned by moving the nozzle 9 for injecting the air. The cleaning water flow rate operation key 4b is of a manual up-down type, and is used when cleaning a local area.
It is operated when changing the amount of water. The cleaning water temperature operation key 4c is operated to change the temperature of the local cleaning water 23 when cleaning the local area. The toilet seat temperature operation key 4d is operated when changing the temperature of the toilet seat 2. The hot air operation key 4e is
The operation is performed when starting the blowing of the warm air or when changing the temperature or the amount of the warm air. These various operation keys 4
When the user operates a, 4b, 4c, 4d, and 4e, the key input information (operation signal) is transmitted to the main control means 8 described later, and the operation of the local cleaning device is controlled.

Next, various operating means stored in the operating means storage section 1b, that is, the operating means 5, the toilet seat temperature adjusting means 6, the cleaning means 7, and the main control means 8 will be described.

The operation means 5 includes the operation keys 4a, 4
It comprises an electric circuit electrically connected to b, 4c, 4d, 4e, and is electrically connected to the main control means 8.

The toilet seat temperature adjusting means 6 is constituted by an electric circuit electrically connected to the main control means 8, and includes a seat detecting means 6a, a toilet seat temperature varying means 6b and a toilet seat temperature detecting means 6.
c. The seating detecting means 6a includes a seating sensor (not shown), and detects that the user is seated on the toilet seat 2 by the seating sensor, and sends the detection result to the main control means 8. The toilet seat temperature changing means 6b receives an instruction to change the temperature of the toilet seat from the main control means 8 and operates a heater (not shown) stored in the toilet seat 2 based on the instruction to change the temperature of the toilet seat 2. Change or keep at the indicated temperature. The toilet seat temperature detecting means 6c includes a temperature sensor (not shown), detects the temperature of the toilet seat 2 by this temperature sensor, and sends the detection result to the main control means 8.

The cleaning means 7 is constituted by an electric circuit electrically connected to the main control means 8 and comprises a cleaning flow rate varying means 7.
a. The cleaning flow rate varying means 7a is provided with a local cleaning water 23 injected from a nozzle 9 provided in the main cleaning apparatus.
Receiving the change instruction of the amount of water from the main control means 8,
Based on this change instruction, the pump 10 provided in the main cleaning device is operated to change the amount of the local cleaning water 23 injected from the nozzle 9 or to maintain the specified water amount.

The main control means 8 controls the temperature of the toilet seat 2 and controls the jetting of the local cleaning water 23 from the nozzle 9 and the cleaning operation in accordance with the instructions of the user sitting on the toilet seat 2. , The operation keys 4a, 4b, 4c, 4
By receiving the change instruction input to the operation means 5 by the operations of d and 4e, the toilet seat temperature adjustment means 6 changes the control amounts such as the toilet seat temperature and the cleaning flow rate based on the change amounts in the operation means 5. And an instruction to the cleaning means 7.

The apparatus body 1 has a built-in tank 1c for storing the local cleaning water 23. This device body 1
It is placed on the rear side of the upper surface of the toilet 11 and is fixed to the toilet 11 by a dedicated fixing bracket (not shown). In this state,
The apparatus main body 1 is located on the front side of a low tank 12 that stores toilet flush water that flows to clean the toilet 11. The apparatus main body 1 is supplied with power by a power cord 13.

Reference numeral 14 denotes a filtration portion, as shown in FIGS. 1, 7, 8 and 9, a substantially cylindrical case portion 14a having an opening 14e serving as an access port upward, and an opening 14e of the case portion 14a. 14b, case part 14a
Pipe 14c projecting from the upper peripheral surface of the
a of a supply pipe projecting from the bottom surface of FIG. The communication port between the supply pipe 14d and the inside of the case portion 14a is a discharge hole.

The case portion 14a has a mounting screw portion 14f formed on the inner periphery of the upper opening 14e.
The valve housing portion 14g for housing 5 is protruded from the bottom surface so as to communicate with the inside of the case portion 14a. This valve storage part 14
g, the communication port between the internal storage space and the case portion 14a is:
It is formed at a position adjacent to a through hole 16h of a holder 16 described later. The supply pipe 14d communicating with the inside of the valve storage part 14g is integrally provided on the bottom surface of the valve storage part 14g. A communication port between the inside of the supply pipe 14d and the internal storage space of the valve storage portion 14g is formed at a position adjacent to a water hole 15d of the check valve 15 described later.

The cap 14b has a threaded portion 14 on its outer periphery.
h is formed, and the O-ring 1
A groove 14k in which 4j is mounted is recessed over the entire circumference. The cap 14b has a handle 14m on its upper surface.
Is provided, and a sealing portion 14n protrudes from the bottom surface.

The cap 14b is screwed to a mounting screw 14f of the case 14a to form an opening 14e.
And attached to the case part 14a. When the cap 14b is attached or detached, the cap 14b is rotated, and by rotating the cap 14b, the cap 14b can be easily rotated by gripping the handle 14m of the cap 14b.

When the cap 14b is attached in the above-described procedure, the sealing portion 14n on the bottom surface is inserted into an input port 16j of the holder 16 to be described later.
By closing the inlet 16j with n, it is possible to prevent an antimicrobial agent 17 described later from leaking from the inlet 16j due to water pressure or the like.
By elastically contacting the inner surface of 4e, the inside of the case portion 14a is sealed.

Reference numeral 15 denotes a check valve, which comprises a valve seat 15a and a valve body 15
b, and a water hole 15d is provided in the valve seat 15a. The valve seat 15a and the valve element 15b are connected by a spring 15c, and the valve element 1 is connected by the spring 15c.
5b is constantly biased downward.

Reference numeral 16 denotes a holder, which is an opening 14e of the filtration unit 14.
The case portion 14a is detachably inserted into and housed in the case portion 14a, and a bottom surface portion 16e described later is provided with a through hole 1 of the case portion 14a.
6h, the filter section 1 is locked by the upper opening edge.
4 is held.

The holder 16 includes a stainless steel mesh (filter material) 16a and a holder main body 16b that supports the mesh 16a. The holder body 16b
A cylindrical tubular portion 16d made of polypropylene and having a flange 16c protruding from the outer periphery, a disc-shaped bottom portion 16e located below the tubular portion 16d, and a bridge between the flange 16c and the bottom portion 16e. And a plurality of reinforcing ribs 16f. The cylindrical portion 16d, the bottom surface portion 16e, and the reinforcing rib 16f are integrally formed. And the cylinder part 1
6d between the flange 16c and the bottom 16e and the reinforcing rib 16
f, a cylindrical mesh 16 is attached to the holder main body 16b.
By attaching a over the entire circumference, the holder 16 is formed.

[0032] Inside the mesh 16a of the holder 16, a storage portion 16 for storing an antibacterial agent 17 described later is held.
g. The mesh 16a of the holder 16 is
The antibacterial agent 17 is prevented from flowing out of the storage section 16g, and impurities contained in the tap water 24 are removed.
The holder 16 is provided with a through hole 16h serving as an inlet of the storage portion 16g on the bottom portion 16e, and a portion of the mesh 16a serves as an outlet of the storage portion 16g. Therefore, the inflow port of the holder 16 is provided below the outflow port.

The holder 16 has an inlet 16j for introducing the antibacterial agent 17 into the storage portion 16g.
It is provided in. Further, the holder 16 is provided with a fall prevention mesh 16k on the upper surface of the bottom portion 16e so as to cover the through hole 16h.
To prevent falling.

Numeral 17 denotes an antibacterial agent for supplying water in which microorganisms have propagated from an aged elevated water tank, or a tank 1c for a long time.
And the like, and sterilizes or disinfects the washing water in which free chlorine is completely consumed by staying in the water supply path and microorganisms have propagated.
The antibacterial agent 17 contains at least one of silver oxide, silver chloride and silver nitrate, and is formed in a granular, fine or tablet form.

The antibacterial agent 17 is not limited to a solid substance consisting of at least one of silver oxide, silver chloride and silver nitrate, but may be a form-reinforcing agent for reinforcing the form, a solvent gradually adjusting to gradually dissolve, or the like. It may be mixed, supported on zeolite or the like, or packaged in a nonwoven fabric. Further, the antibacterial agent 17 is not limited to a silver compound such as silver oxide, silver chloride or silver nitrate, but may be metallic silver. As described above, the antibacterial agent 17 is
6 is held and held in the mesh 16a, and is separate from the mesh 16a.

Reference numeral 18 denotes a branch faucet, which is a toilet plumbing system.
And divides the tap water 24 supplied by the tap pipe 19 into a main stream and a tributary stream. The main stream of tap water 24 diverted by the branch faucet 18 is supplied to the low tank 12 through a low tank pipe (not shown), and is used as toilet flush water for cleaning debris in the toilet 11 after defecation and urination. On the other hand, the tributary of the tap water 24 diverted by the branch faucet 18 is supplied to a filtration unit 14 to be described later through a flexible hose 20, and after the contaminants are removed by the filtration unit 14, the local washing water 23 is used. Water is stored in the tank 1c.

Therefore, the water supply path 21 of the main cleaning device is
Refers to a flow path of water from the water supply pipe 19 to the nozzle 9 through the branch faucet 18, the flexible hose 20, and the filtration unit 14, and by holding the holder 16 in the case 14a of the filtration unit 14. The storage portion 16g of the antibacterial agent 17 is disposed in the middle of the water supply path 21, specifically, upstream of the tank 1c, and the antibacterial agent 17 is held upstream of the tank 1c.

Next, the operation of the local cleaning apparatus will be described with reference to FIG. First, when the user sits on the toilet seat 2, it is detected by the seating detection means 6a, and the local cleaning device enters a standby mode. Next, when the user turns on the local cleaning operation key 4a after defecation, the nozzle 9 expands in accordance with an instruction from the main control means 8, the pump 10 operates with the expansion of the nozzle 9, and the water supply in the water supply path 21 further proceeds. The solenoid valve 22 opens.
Then, when the pump 10 operates, the local cleaning water 23 is jetted from the nozzle 9 toward the local area, and the local area is cleaned. The supply of the local cleaning water 23 to the nozzle 9 is as follows.
This is performed via a pump 10 from a tank 1c built in the apparatus main body 1.

The supply of the local washing water 23 to the tank 1c is performed from the filtration unit 14 via the opened water supply solenoid valve 22. Thereafter, when the user operates the local cleaning operation key 4a as a stop switch, the pump 10 stops according to an instruction from the main control means 8, the nozzle 9 contracts, and the water supply electromagnetic valve 22 closes. In this manner, the local cleaning is completed, and the local cleaning apparatus is in a standby state.

Next, based on FIGS. 1A and 1B,
The state of the filtration unit 14 before and after the local washing will be described. FIG. 3A shows the state of the filtration unit 14 when water is not flowing, that is, before and after performing local cleaning, and FIG. 4B shows the state of filtration when water is flowing, that is, when local cleaning is being performed. The state of the unit 14 is shown.

In the non-water-permeable state, as shown in FIG. 3A, the valve body 15b moves downward by the bias of the spring 15c,
It is stored in the valve storage part 14g, and the water hole 15d is closed by the valve body 15b. That is, the check valve 15 disposed on the upstream side of the through hole 16h of the storage portion 16g allows
The local washing water 23 stored in the filtration unit 14 is prevented from flowing back to the supply pipe 14d based on the concentration difference from the tap water 24. Therefore, unnecessary dissolution of the antibacterial agent 17 is eliminated,
The life of the antibacterial agent 17 can be extended.

The check valve 15 also prevents the antibacterial agent 17 from dropping through the through hole 16h of the storage portion 16g and flowing into the supply pipe 14d, in addition to the backflow of the local washing water 23.
Further, the check valve 15 also prevents the antibacterial agent 17 from flowing into the supply pipe 14d from the valve storage portion 14g through the eyes of the fall prevention mesh 16k by melting and becoming small.

The antibacterial agent 17 is settled (deposited) in the local washing water 23 stored in the storage portion 16g. In this state, a flow space is provided above the antibacterial agent 17 in the upper portion of the storage portion 16g. A portion 16m is formed. This flow space 1
6 m can be formed by storing the antibacterial agent 17 so as not to fill the storing portion 16g.

When the local cleaning is started from the non-water-passing state as described above, the water-passing state shown in FIG. That is, when the user turns on the local cleaning operation key 4a, the pump 10 is operated and the water supply electromagnetic valve 22 is opened, and the pump 10 is operated, whereby the supply pipe 14d is turned on.
From the flexible hose 20 connected to the supply pipe 14d
Tap water 24 flows into the tank.

Next, the tap water 24 flowing into the supply pipe 14d
Flows into the valve housing 14g through the communication port and the water hole 15d between the inside of the supply pipe 14d and the internal housing space of the valve housing 14g by the operation of the pump 10. At this time, the valve body 15b is pushed up by the water pressure of the tap water 24 against the force of the spring 15c, and the water hole 15d is opened.

Next, the tap water 2 flowing into the valve housing 14g
4 is a communication port and a holder 1 between the internal housing space of the valve housing portion 14g and the case portion 14a by the operation of the pump 10.
6 through the through hole 16h. At this time, the bottom surface portion 16e of the holder 16 is fitted to the valve housing portion 14g.
Almost all of the tap water 2 because it is in close contact with the upper opening edge of the communication port between the internal accommodating space and the case portion 14a.
4 flows into the storage portion 16g from the through hole 16h.

Since the flow space 16m is formed in the upper part of the storage part 16g, the antibacterial agent 17 moves so as to flow through the whole of the storage part 16g by the water pressure of the flowing tap water 24. Stirring. And the storing part 16g
As the antibacterial agent 17 dissolves in the tap water 24 flowing into the water, the local cleaning water 23 is generated. After that, the local cleaning water 23 flows out of the mesh 16a by the operation of the pump 10, and the inside of the case 14a Through the discharge port 14c.

Next, the local washing water 23 flowing into the discharge pipe 14c flows into a water supply hose (not shown) by the operation of the pump 10, and flows into the tank 1c via the water supply electromagnetic valve 22 from the water supply hose. I do. Thereafter, the local cleaning water 23 is injected from the nozzle 9 as described above. Also, when the user operates the local cleaning operation key 4a, the pump 10 stops and the water supply electromagnetic valve 22 closes, so that the pump 10 stops operating and the water supply state ends, and FIG. State.

In this local cleaning device, the heavy metal antibacterial agent 17 to be dissolved in the local cleaning water 23 is held separately from the mesh 16a.
a, the surface of the antibacterial agent 17 is not covered with the organic suspension, and the antibacterial property does not decrease even when the amount of chlorine in the tap water 24 is small. And urinary tract infections can be prevented. In addition, since the antibacterial property does not decrease, formation of a biofilm in the flow path including the nozzle 9 can be prevented.

The antibacterial agent 1 is located upstream of the tank 1c.
7, the tank 1c stores the sterilized and antibacterial local washing water 23.
The growth of microorganisms can be suppressed. Furthermore, since the adhesion of a biofilm to a heater or the like in the tank 1c can be suppressed, the inside of the tank 1c can be effectively heated.

The presence of contaminants and the like in the filtration part 14 makes it easy to become a propagation source of microorganisms. However, by retaining the antibacterial agent 17 in the filtration part 14, it is possible to suppress the proliferation of microorganisms. Can be.

Further, since the antibacterial agent 17 is made of a silver compound, it can be sterilized and antibacterial at a low concentration, and can supply the local cleansing water 23 to the human body more safely.

Next, a second embodiment of the present invention will be described below with reference to FIG. The same members as those in the first embodiment are denoted by the same reference numerals, and only the parts different from those in the first embodiment will be described. This embodiment is basically the same as the first embodiment, except that the water supply path 21 is provided between the filtration unit 14 holding the antibacterial agent 17 and the nozzle 9 which is the jetting point of the washing water.
For example, a configuration is provided in which a heavy metal adsorbent storage section 26 in which a heavy metal adsorbent 25 such as an ion exchange membrane or zeolite is stored is provided.

In such a local cleaning device, in addition to the effect of the first embodiment, the filtering unit 14 holding the antibacterial agent 17
The excess antibacterial agent 17 in the local cleaning water 23 is adsorbed by the heavy metal adsorbent 25 disposed between
The effect of the antibacterial agent 17 on the human body can be reduced.

[0055]

According to the first aspect of the present invention, since the heavy metal antibacterial agent to be dissolved in the washing water is held separately from the filter medium, the organic suspension adheres to the filter medium. However, even the surface of the antibacterial agent is not covered with the organic suspension, and the antibacterial property does not decrease even in a state where tap water is low in chlorine.

The local cleaning apparatus according to the second aspect is the first aspect.
In addition to the effect of the local cleaning device described, by holding the antibacterial agent upstream of the tank, the tank stores the sterilized and antibacterial cleaning water, so that the growth of microorganisms in the tank can be prevented. Can be suppressed.

According to the third aspect of the present invention, there is provided a local cleaning apparatus according to the first aspect.
Or, in addition to the effect of the local cleaning device according to any one of claims 2, the presence of contaminants and the like in the filtration portion makes it easy to become a propagation source of microorganisms, but retains the antibacterial agent in the filtration portion. By doing so, propagation of microorganisms can be suppressed.

The local cleaning apparatus according to the fourth aspect is the first aspect.
In addition to the effect of the local cleaning device according to any one of claims 3 to 3, since the antibacterial agent is made of at least one of silver and a silver compound, it can be sterilized and antibacterial at a low concentration, and can be applied to the human body. It is possible to supply safer washing water.

The local cleaning device according to the fifth aspect is the first aspect of the invention.
In addition to the effect of the local cleaning device according to any one of claims 4 to 4, an excess antibacterial agent in the washing water is provided by the heavy metal adsorbent disposed between the holding position of the antibacterial agent and the jetting point of the washing water. Is absorbed, and the influence on the human body by the heavy metal antibacterial agent can be further reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a filtration unit according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the same.

FIG. 3 is a partial perspective view of the above, viewed from a different direction from FIG. 2;

FIG. 4 is a block diagram of a control unit according to the first embodiment;

FIG. 5 is a block diagram showing the operation of the above.

FIG. 6 is a flowchart showing the operation of the above.

FIG. 7 is an exploded perspective view of the filtration unit.

FIG. 8 is a perspective view of the holding tool.

FIG. 9 is a bottom view of the holder.

FIG. 10 is a block diagram showing the operation of the second embodiment of the present invention.

FIG. 11 is a cross-sectional view of a filtration unit disclosed in Japanese Patent Application Laid-Open No. 10-258273.

[Explanation of symbols]

 1c Tank 9 Cleaning nozzle 14 Filtration unit 16a Mesh (filter material) 17 Antibacterial agent 21 Water supply path 23 Local cleaning water 25 Heavy metal adsorbent

Claims (5)

[Claims] 1. A local cleaning apparatus, comprising: a filtration unit provided with a filtering material; and a water supply path for supplying cleaning water, wherein the cleaning unit jets the cleaning water filtered by the filtration unit to clean a local unit. The local cleaning device is characterized in that the water supply path holds a heavy metal antibacterial agent to be dissolved in the cleaning water separately from the filtering material. 2. The local part according to claim 1, wherein the water supply path is provided with a tank for storing the washing water upstream of a jetting point of the washing water and holding the antibacterial agent upstream of the tank. Cleaning equipment. 3. The local cleaning device according to claim 1, wherein the water supply path holds the antibacterial agent in the filtration unit. 4. The local cleaning device according to claim 1, wherein the antibacterial agent comprises at least one of silver and a silver compound. 5. The local cleaning device according to claim 1, wherein the water supply path is provided with a heavy metal adsorbent between a location where the antibacterial agent is held and a location where the cleaning water is ejected. .