JPH11148162A - Closet bowl - Google Patents

Abstract

PROBLEM TO BE SOLVED: To economize water as flushing capacity is left as it is maintained even at the time of low water supply pressure. SOLUTION: A closet bowl 100 has a jet spout port 106 while being faced to an inlet 121 for a drain trap 102, and has a jet conduit 161 and an air nozzle 372 on the interior side of the jet spout port 106. A jet pump is composed of the air nozzle 372 and the jet conduit 161 because the jet conduit 161 is used as the passage of a fluid discharged from the air nozzle 372. A flush-water storage section 104 communicated with the jet conduit 161 through a communicating hole 141 is formed. The air nozzle 372 discharges pressure air to the jet conduit 161 at high speed arid high pressure at the time of stool flushing. The pressure air causes ejector action at the time of passage through the jet conduit 161, and rolls flush water into the flush-water storage section 104.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toilet bowl for cleaning dirt by transferring dirt in a bowl portion of the toilet bowl to outside of the toilet bowl using flush water.

[0002]

2. Description of the Related Art In toilets, flush water is usually stored in a flush water tank for flushing the toilet, and the flush water is discharged into the toilet. Then, by the release of the washing water, the wastes and the like in the toilet are flushed directly to the drainage section by the pressure and conveyed to the outside of the toilet. Alternatively, a so-called siphon flow path formed by curving upward in the toilet is filled with flush water to the curved portion by discharging flush water, and a siphon action is generated in the siphon flow path. In addition, wastes and the like are drawn into the discharge portion by using the siphon action together, and the wastes are transported outside the toilet. In this case, the washing water in the ball portion is also transported along with the transport of the filth, and the toilet bowl is cleaned. In order to carry out waste transfer and toilet flushing with the washing water in the tank as described above, generally, a tank capable of storing 10 liters or more of water is required to have about 3 tanks.
It is necessary to dispose it at a height of about 0 cm and apply potential energy to the water in this tank. This is for the following reasons.

[0003] Tap water is generally used for flushing toilets, and the pressure of household water varies depending on the area, season, weather and the like, and is not always constant. In Japan, even in such a case,
It is said that the minimum tap water pressure is about 4.9 × 10 ⁴ Pa (about 0.5 kgf / cm ² ). However, when a water storage tank is provided in a high-rise house or an apartment house or in a specific area, the above-mentioned minimum pressure may not be obtained. Further, even if the pressure when the tap water is not supplied is sufficient, when the supply is started, the flow pressure of the tap water may be significantly reduced due to blockage of the pipe line due to aging of the pipe system and the like. . Therefore, even if such water pressure fluctuations occur, in order to secure energy that is indispensable for conveying waste,
The tank as described above is arranged at a predetermined height.

[0004] By the way, in recent years, population concentration in large cities,
Unseasonable weather worldwide has made it difficult to provide a stable supply of domestic water. Therefore, local governments and governments are regulating and calling for water conservation in various fields. Toilet bowls are no exception, for example, in 1994 when the US government reduced the water regulation for toilet flushing from 3.5 gallons (about 13 liters) to 1.6 gallons (about 6 liters), and Taiwan. And Singapore are also keen to save water. or,
In Japan, municipalities are also seeking ways to conserve water.

[0005] As a method often used for saving water, for example, bricks are put into a washing water tank to reduce an apparent water storage amount. However, this method is not sufficient in that it does not provide the required amount of flush water for flushing the toilet and causes poor cleaning.

[0006]

Some proposals have been made for the above-mentioned demand for water saving. One of the proposals is Japanese Patent Application Laid-Open No. 54-18137 and Japanese Patent Publication No. 6-99952.
There is something shown in the issue. In the technology proposed in these publications, a sub-tank for storing cleaning water by pressurizing it to approximately the same level as tap water pressure is stored in an existing cleaning water tank. And
At the time of flushing the toilet, pressurized water stored in the sub tank and having energy equivalent to the tap water pressure is directly discharged to the toilet.
However, while these technologies can reduce the amount of washing water,
The size of the washing water tank increases as required to install the sub tank. For this reason, when the toilet room is small, this toilet cannot be installed in some cases. Also, low flush type toilet bowls, which have the flush water tank lower in position and integrated with the toilet, cannot be large enough to accommodate the sub-tank due to design constraints. It was difficult.

Therefore, in a low silhouette type toilet, a water pipe is directly connected to a pipe for flushing a toilet, and flush water is directly discharged at a tap water pressure.
However, even with such a configuration, the tap water pressure may have a fluid pressure of about 2.94 × 10 ⁴ to about 2.94 × 10 ⁴ due to some cause, for example, water cutoff or discharge of a large amount of water from another faucet or blockage of a pipeline.
4.9 × 10 ⁴ Pa (about 0.3 to 0.5 kgf / c
m ² ), waste transport and toilet flushing are incomplete. And in the low water pressure area where the common tap water pressure is often less than the above-mentioned pressure, tap water cannot be directly discharged.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to save water while maintaining a cleaning ability even at a low water supply pressure (at a low fluid pressure).

[0009]

Means for Solving the Problems and Their Functions and Effects In order to solve such problems, a first toilet according to the present invention is a toilet which conveys filth in a ball portion of the toilet to the outside of the toilet. A discharge member that discharges cleaning water for transporting filth, and, when the cleaning water is discharged, amplifies a flow rate of cleaning water used for transporting filth in the ball portion, and discharges the cleaning water to the water discharging member. And amplifying means for mixing and ejecting both fluids using air supplied from an air source as a driving fluid and washing water prepared for conveying dirt in the ball portion as a driven fluid. A jet pump, a driving nozzle that ejects air supplied from the air source, and a throat that forms a passage for the two fluids corresponding to the driving nozzles and guides the two fluids to the discharge member. Having Characterized in that it comprises the serial jet pump.

[0010] In the first toilet of the present invention having the above-described configuration, the contaminant is conveyed by discharging the cleaning water from the discharge member, using the cleaning water whose flow rate has been amplified by the jet pump as follows.

From the driving nozzle, an air pressure substantially equal to the air source (generally, about 9.8 × 10 ^{4 to} 1.96 × 10 ⁵⁾
High-speed, high-pressure air having an energy of about Pa (about 1 to ² kgf / cm ² ) is ejected. The high-speed and high-pressure jet air causes an ejector action when passing through the throat as a driving fluid, and becomes a jet that entrains cleaning water prepared in advance as a driven fluid. In addition, since jet jetting is performed by a jet pump,
The instantaneous flow rate at that time is increased. For this reason, the cleaning water prepared in advance is drawn into the jet air, and the flow is amplified and the instantaneous flow is increased, and the cleaning water is guided from the throat to the discharge member and discharged. Therefore, since the waste in the ball portion is conveyed to the outside of the toilet by the cleaning water mixed air which has undergone the flow rate amplification and the instantaneous flow increase, the toilet capacity can be maintained, so that the cleaning ability can be maintained. In addition, since it is not necessary to use water as the driving fluid, only a small amount of cleaning water prepared in advance is required for cleaning water for transporting waste. Therefore, further water saving can be achieved.

Further, in order to increase the flow rate of the cleaning water and increase the instantaneous flow rate, no water supply is required for the driving nozzle. Therefore, about 2.94 × 10 ⁴ Pa (about 0.3 kg
According to the first toilet of the present invention, even in a low water pressure area of about f / cm ² ) or an area or time when the water pressure drop to this degree frequently occurs, high flushing capacity and high water saving are achieved. be able to.

Moreover, there is no need for any portion protruding from the upper surface of the toilet, such as a washing tank device separate from the toilet. Therefore, the first toilet of the present invention can be easily applied to a low silhouette type toilet having a high degree of freedom in design. In this way, it is possible to expand the area where the low silhouette type toilet can be installed.

Furthermore, even when a sanitary washing device or the like for performing local washing by discharging washing water is installed on the upper surface of the toilet,
There is no need to impose size and shape restrictions on the sanitary washing device and the like. For this reason, the degree of freedom in designing the entire periphery of the toilet including the sanitary washing device is increased, and a toilet with a higher quality can be provided.

For the sake of convenience in the following description, the washing water whose flow rate has been increased and the instantaneous flow rate has been increased via a jet pump will be simply referred to as flow rate amplified washing water.

A second toilet according to the present invention is a toilet bowl for transporting filth in a bowl portion of the toilet to the outside of the toilet, wherein a discharge member for discharging washing water for transporting the filth, When the cleaning water is discharged, amplifying means for amplifying the flow rate of the cleaning water used for conveying the dirt in the ball portion and guiding the cleaning water to the water discharging member, and pressurizing the water supplied from the water supply source. Pressurizing means, wherein the amplifying means mixes the two fluids by using the pressurized water pressurized by the pressurizing means as a driving fluid and the washing water prepared for conveying dirt in the ball portion as a driven fluid. A jet pump for jetting the pressurized water, the jet pump having a throat that forms a passage for the two fluids corresponding to the drive nozzles and guides the two fluids to the discharge member. Equipped with The features.

In the second toilet of the present invention having the above configuration, water from the supply source is pressurized before water is ejected from the drive nozzle. Therefore, water is ejected from the driving nozzle at high pressure and high speed by this pressurization, and the washing water prepared in advance is involved in the ejected water to amplify the flow rate and increase the instantaneous flow rate. To discharge. For this reason,
As described above, even in a low water pressure area or a low water pressure period, or in a low flow rate area or a low flow rate period, according to the second toilet of the present invention, high washing capacity and high water saving can be achieved. Can be planned. Therefore, the area where the low silhouette type toilet can be installed can be expanded.

A third toilet according to the present invention is a toilet bowl for transporting filth in a bowl portion of the toilet to the outside of the toilet, wherein the discharge member discharges washing water for transporting the filth, and Amplifying means for amplifying the flow rate of the washing water used for conveying the dirt in the ball portion when the washing water is discharged, and guiding the washing water to the water discharging member; Pressurizing means for pressurizing at the time of water pressure, wherein the amplifying means mixes and ejects both fluids using the supplied water as a driving fluid and the washing water prepared for conveying the dirt in the ball portion as a driven fluid. A jet pump that ejects the supplied water, and a throat that forms a passage for the two fluids corresponding to the drive nozzles and guides the two fluids to the discharge member. Equipped with a jet pump, front The jet pump includes a first drive nozzle for directly ejecting water supplied from the water supply source, a second drive nozzle for ejecting water pressurized by the pressurizing means, the first and second drive nozzles. And selecting means for selecting the driving nozzle according to the water supply pressure of the water supply source.

In the third toilet of the present invention having the above configuration, when water is ejected from the driving nozzle, water is supplied from the supply source prior to the ejection at the time of low supply pressure, and the water is ejected from the first driving nozzle. By this pressurization, water (pressurized water) is jetted at high pressure and high speed. Then, the cleaning water prepared in advance is involved in the jetted water to increase the flow rate and increase the instantaneous flow rate, and in this state, the cleaning water is discharged for conveying the waste. On the other hand,
When the water supply pressure is high, the water from the water supply source can be blown out from the second drive nozzle with the high water supply pressure to increase the flow rate and increase the instantaneous flow rate. Then, these two drive nozzles are selectively used according to the water supply pressure. For this reason, according to the third toilet of the present invention, high flushing performance and high water saving can be achieved regardless of the presence or absence of the above-described low water pressure. And since the pressurization of water is only required at the time of low supply water pressure, the energy required for pressurization can be reduced. Specifically, the pressurizing device may be driven intermittently or temporarily, so that energy can be saved.

A fourth toilet according to the present invention is a toilet bowl for transporting filth in a bowl portion of the toilet to the outside of the toilet, wherein the discharge member discharges washing water for transporting the filth, and When the cleaning water is discharged, amplifying means for amplifying the flow rate of the cleaning water used for transporting the dirt in the ball portion and guiding the cleaning water to the water discharging member, and pressurizing the water supplied from the water supply source. Mixing means for mixing air, wherein the amplifying means uses pressurized air mixed water in which the pressurized air is mixed by the mixing means as a driving fluid, and a washing water prepared for conveying dirt in the ball portion. A jet nozzle that mixes and ejects both fluids as a driven fluid, comprising: a drive nozzle that ejects the pressurized air mixed water; To the discharge member. Characterized by comprising the jet pump and a chromatography bets.

In the fourth toilet of the present invention having the above-mentioned structure, prior to the ejection of water from the drive nozzle, the water from the supply source is mixed with pressurized air to pressurize the water. Therefore, water (pressurized air mixed water) is spouted from the drive nozzle at high pressure and high speed by this pressurized air mixing, and washing water prepared in advance is involved in the spouted water to increase the flow rate and increase the instantaneous flow rate. In this state, the washing water is discharged for conveying the waste.
Therefore, even with the fourth toilet according to the present invention, high washing performance and high water saving can be achieved even in a low water pressure area or a low water pressure period as described above. Therefore, the area where the low silhouette type toilet can be installed can be expanded.

The fourth toilet according to the present invention having the above configuration can also adopt the following modes. In a first aspect, in the fourth toilet according to the present invention, the mixing means may include means for driving the mixing means at a low water supply pressure to mix the pressurized air.

According to the first aspect, when water is ejected from the drive nozzle, the water is pressurized by mixing the water from the supply source with pressurized air prior to the ejection when the water supply pressure is low. Therefore, at the time of low supply water pressure, water (pressurized air mixed water) is jetted from the drive nozzle at high pressure and high speed by this pressurized air mixing. Then, the cleaning water prepared in advance is involved in the jetted water to increase the flow rate and increase the instantaneous flow rate, and in this state, the cleaning water is discharged for conveying the waste. On the other hand,
When the water supply pressure is high, water from the water supply source is jetted from the drive nozzle with the high water supply pressure, so that flow amplification and instantaneous flow increase can be achieved. For this reason, according to this embodiment, high washing performance and high water saving can be achieved regardless of the occurrence of the low water pressure as described above. And
Since the mixing of the pressurized air is required only at the time of the low water supply pressure, the pressure required for the air and the energy required for the mixing can be reduced. Specifically, the pressurizing device may be driven intermittently or temporarily, so that energy can be saved.

According to a second aspect, in the fourth toilet of the present invention, the mixing means has a start switch operated by a user, and is driven by operating the start switch to supply the pressurized air. It can be mixed.

According to the second aspect, when the start switch is operated to eject water from the drive nozzle, pressurized air is mixed with the water from the supply source, and the water is supplied from the drive nozzle at high pressure and high speed. Spouts water (pressurized air mixed water).
Then, the cleaning water prepared in advance is involved in the jetted water to increase the flow rate and increase the instantaneous flow rate, and in this state, the cleaning water is discharged for conveying the waste. On the other hand, when the start switch is not operated, the water from the water supply source is blown out from the drive nozzle at the same water supply pressure, so that the flow rate can be amplified and the instantaneous flow rate can be increased. Therefore, according to this aspect,
Through the operation of the start switch, high washing performance and high water saving can be achieved. Since the mixing of the pressurized air is required only when the start switch is operated, the energy required for pressurizing the air and mixing the air can be reduced. Specifically, the pressurizing device may be driven intermittently or temporarily, so that energy can be saved.

According to a third aspect, in the fourth toilet of the present invention, the mixing means is provided in a water supply line from the water supply source to the drive nozzle of the jet pump, and in the water supply line. Bubble flow means for mixing air from the aeration unit into the water in the water supply conduit, and converting the flow of water that has undergone aeration from the aeration unit into a bubble flow in which air is dispersed and mixed into the water; Mixing ratio adjusting means for adjusting a mixing ratio of water and air in the bubble flow so that an air mixing ratio η defined by a value Qa / Qw of a ratio of a feedwater flow rate Qw to an air flow rate Qa is 1.3 or more. Can be provided.

According to the third aspect, there are the following advantages.

When jetting water from a nozzle, not only water but also water mixed with air is jetted. It is known that, in this manner, the flow rate of the jet water can be increased and the momentum can be increased as compared with the case where only water is jetted. And
As described above, even if air is simply mixed, the amount of water jetted from the nozzle can be reduced. In this case, a technique of simply mixing air from the branch pipe into the water pipe is adopted for air mixing.

By the way, in order to increase the momentum of water by mixing air into the water, it is necessary to surely transmit the momentum of the mixed air to the water. However, the method of simply mixing air using a branch pipe does not sufficiently transmit the momentum of air to water as described below, and has various problems.

The air from the branch pipe is cut off by the shearing force received from the flow of water while expanding into the pipe at the opening at the end of the branch pipe, becomes bubbles, and enters the water. If a large amount of air is mixed into the water by increasing the amount of air mixed by such an air mixing method, the air bubbles are cut off in a state where the air becomes large due to the increase in the amount of air. Therefore, a relatively large bubble lump is easily generated. And
Such bubble masses coalesce easily. For this reason, in the pipeline downstream of the branch pipe, even if it is a flow of water in which air is mixed with water, the flow aspect is a slag flow or an annular flow in which the gas phase is somewhat continuous.

When the amount of air mixed in is further increased by adopting the above-described air mixing method, the flow approaches a flow state in which water droplets are mixed in the air flow, and tends to become a spray flow as described below. That is, since the bubble density increases with an increase in the amount of mixed air, the chance of coalescence of bubbles increases and the frequency of bubble coalescence increases. Therefore, the bubble diameter increases, and the continuation of the gas phase progresses to form a continuous gas phase. In this state, since the contact area between the water and the air is small and the resistance is low, the momentum is not transmitted from the air to the water. Therefore, water flows at low speed along the pipe wall surface, and air flows at high speed through the center of the pipe. In this way, when water and air flow through the pipeline, the water on the pipeline wall is crushed by the vibration of the gas-liquid interface generated when air flows at high speed and the shearing force due to the turbulent flow. A phase spray flow.

In the flow aspect of the slag flow and the annular flow including the spray flow (hereinafter, this flow aspect is collectively referred to as an undesired flow aspect), since the gas phase is continuous, water and The air contact area is reduced. In addition, since the contact resistance between water and air is low, the effect of increasing the speed of water by air mixing is low, and the effect of increasing the speed of jet water, that is, the momentum, is reduced. For this reason, in an undesired flow mode such as a slag flow, although a small amount of water can be obtained by aeration, the momentum of the water itself is low and the degree of transmission of the momentum from the air is low due to the small amount, so that a high momentum from the nozzle Can not squirt water. Therefore, in the above-described air mixing method, an undesired flow aspect such as a slag flow is exhibited even if an increase in the mixed air amount is attempted, so that the mixed air amount is limited from the viewpoint of securing the momentum of the jetted water. The reduction of water is inhibited by the amount. Under these circumstances, the effectiveness of water saving was not always sufficient.

In this case, the air entrapment rate at the boundary where the bubble flow and the spray flow invert as described above, that is, the air entrapment defined by the value Qa / Qw of the ratio of the water supply flow rate Qw to the air flow rate Qa. The ratio η was found to be approximately 1.3, assuming that air is mixed in the vicinity of the nozzle outlet. That is, in the above-described aeration method, even if the aeration ratio is set higher than 1.3, not only can the water be jetted by the spray flow, but the jetting water speed does not increase and the water saving rate associated therewith is saturated. . Therefore, in the above-mentioned conventional aeration method, the critical point of the aeration rate is approximately 1.3.

By the way, in order to secure the velocity of the jetted water while exhibiting the above-mentioned undesired flow aspect, it is necessary to supply water with a high momentum, that is, at a high water force, and the water is supplied with air. It is necessary to mix them. Therefore, the supply of the washing water cannot be performed only by the tap water pressure, and the water supply requires a high-performance pump that consumes a large amount of power.
In addition, a high-performance pump is required that consumes a large amount of power even when air is mixed. This makes it difficult to save water and requires extra energy for water supply and air mixing.
In addition, since such a pump is large in size, the downsizing of a toilet bowl is hindered due to the built-in pump.

On the other hand, in the toilet of the third embodiment having the above-described structure, the flow of water after aeration is mixed with water to form a bubble flow in which air and water flow at the same speed.
The entrained air is present in the water separated from each other. Therefore, the momentum of the mixed air can be reliably transmitted to the water by the dispersed and mixed air, so that the flow velocity of the water is increased and the momentum is also increased. Then, the water having the increased flow velocity and momentum is jetted from the drive nozzle of the jet pump as the above-mentioned pressurized air mixed water in a bubble flow state. As a result, the cleaning water prepared in advance is involved in the jetted water to increase the flow rate and increase the instantaneous flow rate, and in this state, the cleaning water is discharged for conveying the waste. For this reason, according to this aspect, it is possible to achieve high washing performance and high water saving even in a low water pressure area or a low water pressure period as described above. Therefore, the area where the low silhouette type toilet can be installed can be expanded.

Furthermore, by setting the air mixing ratio η to 1.3 or more, which was the upper limit in the past, it is possible to reduce the amount of water more than before. Furthermore, since the mixed air is divided as the above-mentioned bubble flow, even if the air mixing ratio η is higher than the conventional upper limit of 1.3, the chance of coalescence of bubbles is reduced and the bubble diameter is increased. In addition, a continuous phase of the gas phase does not occur. Therefore, an undesirable flow appearance such as a spray flow is not caused. Therefore, the effectiveness of water saving can be reliably improved by air mixing at a high air mixing rate. In addition, since the water having the increased momentum is ejected from the driving nozzle as the above-described bubble flow having no continuous gas phase, the washing water can be discharged, so that the nozzle ejection in an undesired flow mode such as a spray flow can be performed. Unlike this, the waste can be transported reliably. Further, since the momentum of the mixed air can be reliably transmitted to the water, energy loss can be suppressed, and there is no need to supply the water itself (water supplied to the drive nozzle) with a high momentum. Therefore, not only does a high-capacity pump device with large power consumption be required for water supply, but also a high-performance pump device is not required for aeration.
As a result, the power saving effect can be improved.

In this case, the air mass is miniaturized in order to obtain a completely independent state of water and air through the air dispersion as described above. The degree of the micronization is as follows: the bubble diameter is 100 to 1000 μm. It is preferred that That is, considerable energy is required to make the bubbles finer until the bubble diameter becomes 100 μm or less. Further, when the bubble diameter is 1000 μm or more, bonding between adjacent bubbles is likely to occur, and the bubble flow containing a large amount of air having a volume ratio of 1.3 times or more becomes unstable.

The toilet according to the third aspect described above can also adopt the following aspects. That is, the mixing ratio adjusting means controls the bubble flow means to control the amount of air mixed in, the first adjusting means for adjusting the air flow rate Qa, and the supply of water supplied to the water supply pipe. It may have at least one of the first and second adjusting means of the second adjusting means for controlling the amount and adjusting the feedwater flow rate Qw.

In this way, the air flow rate Qa and the feedwater flow rate Qw
Through the adjustment of either or both
Can be reliably set to 1.3 or more.

The mixing ratio adjusting means controls the bubble flow means based on the supply amount of water supplied to the water supply pipe to control the amount of air mixed in, thereby adjusting the air flow rate Qa. Means.

In this way, even if the water supply flow rate fluctuates due to some cause, for example, an inadvertent pressure drop on the supply source side such as a water pipe, the air mixing ratio η can be reliably set to 1.3 or more.

Further, the air mixing section may have a fine bubble mixing means for mixing fine bubbles into the water in the water supply conduit.

In this way, the air becomes fine bubbles and mixes with the water in the water supply conduit, and the mixed bubbles keep the state of closed cells because they are fine. For this reason, the chance of coalescence with surrounding bubbles can be further reduced. Therefore, the above-mentioned bubble flow can be obtained with more reliable dispersion and mixing of air, and an undesired flow aspect such as a slag flow is not obtained, so that a high water-saving effect can be easily obtained.

In this case, the fine bubble supply means can mix fine bubbles having an average diameter of about 100 μm to 1000 μm into the washing water. In this case, the bubbles have a high rigidity due to the specified particle size, and the deformation of the bubble shape can be suppressed. Therefore, in addition to reducing the chance of the coalescence of the bubbles, the coalescence of the bubbles can be less likely to occur, so that the water can be ejected from the driving nozzle in a state of the bubble flow in which the air is stably dispersed and mixed. In addition, because it does not cause unnecessary movement of bubbles in the water of the water supply line,
Energy losses in transferring the momentum of the air to the water are also reduced. Therefore, as described above, the effectiveness of water saving and the power saving effect can be further improved.

Further, the fine bubble supply means may have a large number of divided independent openings on a surface of the water supply pipe which is in contact with water. In this way, the air is separately mixed as individual bubbles into the water of the water supply pipe through the respective independent openings, and each bubble maintains a state of a closed bubble from the beginning. Each of these bubbles has a small diameter and a substantially spherical shape depending to some extent on the independent aperture, and therefore has high rigidity and is hardly deformed. Therefore, in addition to reducing the chance of the coalescence of the bubbles, the coalescence of the bubbles can be made less likely to occur, so that a bubble flow in which the air is stably dispersed and mixed can be obtained. In addition, since the bubbles are individually formed from the respective independent openings and mixed with the washing water in a state of the closed bubbles, the bubbles are mixed with the water in the pipeline from the beginning with high dispersion efficiency. The air bubbles mixed in this way are diffused due to the turbulence of the flow of water in the water supply pipe, and are uniformly dispersed in the water. Therefore, coupled with the fact that bubble coalescence is unlikely to occur as described above, the momentum of the bubbles (mixed air) is more efficiently transmitted to the water in the pipeline, and the water is ejected from the driving nozzle with a high momentum. As a result, as described above, the effectiveness of water saving and the power saving effect can be further enhanced.

Further, the independent openings of the fine bubble supply means can be arranged regularly.
In this case, the number of holes per unit area can be increased, and the distance between the bubbles can be kept uniform. Therefore, since undesired flow aspects such as a slag flow are unlikely to occur when bubbles are generated, it is possible to reliably transmit the momentum of the mixed air to the washing water. In addition, the size can be reduced by increasing the aperture density, and it is not necessary to increase the diameter of the water supply pipe in which the air mixing section having the fine bubble supply means is mounted.

Further, the air mixing section may constitute a part of the water supply pipe. This way,
In the aeration section, the flow of water in the pipeline is not disturbed or the flow does not stagnate. By the way, if turbulence or stagnation occurs in the water in which the bubbles are mixed, the chance of contact between the bubbles increases or the residence time increases, so that the coalescence of the bubbles is likely to occur and the diameter of the bubbles tends to increase. However, as described above, since the turbulence and stagnation of the flow of water are not generated, the bubbles can be appropriately dispersed and mixed, and the water can be imitated from the driving nozzle in this state. For this reason, the water-saving effect and the power-saving effect can be further enhanced.

In this case, the air mixing portion may be formed of a porous material, or may have a substantially mesh structure over a region of the pipe in contact with the washing water. This makes it possible to easily provide each of the microbubble mixing means in the water supply conduit. Also, the mesh structure
It can be easily formed by laminating or weaving fibers etc., and by controlling the thickness, spacing and orientation of the fibers etc., it is easy to adjust the opening shape, area and distance between openings of the mesh it can. Therefore, the bubbles can be more reliably dispersed and mixed through these adjustments.

Further, the air mixing section may be provided near the ejection port of the driving nozzle. In this case, the water of the bubble flow in which the air is dispersed and mixed is quickly spouted from the spout. Therefore, coalescence of bubbles during the flow in the pipeline can be suppressed, and water can be jetted out with a stable bubble flow. Further, since the length of the path through which the water flows in the state of the bubble flow is shortened, the pipe resistance at the time of passing the water is reduced. Therefore,
The water pressure required for supplying water and the mixed air pressure can be reduced, and the water saving efficiency at low water pressure can be improved.

[0050] Further, the bubble-flowing means is provided in a pipe downstream of the aeration section to break up bubbles contained in the flow of water in the water supply pipe, and to break the flow of water into bubbles. Having a bubble crushing means that changes to a bubble flow mixed and dispersed in the air. In this way, even if the flow of the water after the aeration is an undesired flow mode such as a slag flow including a continuous gas phase, the bubble mass contained in the flow of the water can be crushed to change to a bubble flow. Therefore, the cleaning water can be discharged for conveying the waste through the jet of the water after the change to the bubble flow, so that the water-saving effect and the power-saving effect can be surely enhanced as described above.

The crushing of the bubble mass by the bubble crushing means
It is preferable that the cell diameter as a result of the crushing is 100 to 1000 μm. That is, considerable energy is required to crush the bubbles until the bubble diameter is reduced to 100 μm or less, and the bubble crushing means has a large flow resistance against the water in the water supply conduit. Further, when the bubble diameter is 1000 μm or more, bonding between adjacent bubbles is likely to occur, and the bubble flow containing a large amount of air having a volume ratio of 1.3 times or more becomes unstable.

In this case, the bubble crushing means can be provided near the ejection port of the driving nozzle. In this way, the water that has been converted to the bubble flow is quickly spouted from the spout, so that the water saving efficiency at low water pressure can be increased as described above.

[0053]

Other aspects of the present invention The present invention can also adopt the following other aspects. The first other aspect is the above-mentioned toilet bowl of the present invention, There is provided a storage portion formed so as to be separated from the ball portion so that the stored stored water can flow in, and stores the flowed water as the prepared water in advance before starting the transfer of the filth.

According to the first other aspect, the storage portion stores the cleaning water discharged from the rim and the water stored in the ball portion, and this water can be used as a driven fluid. Therefore, a special configuration only for storing water in the storage section is not required, and the configuration can be simplified.

[0055]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a toilet according to the present invention will be described based on examples. FIG. 1 is a schematic sectional view of a toilet bowl 100 according to a first embodiment of the present invention. As shown, the toilet 100 of the first embodiment is a so-called low silhouette toilet having no flush water tank separate from the toilet. The toilet bowl 100 includes a ball portion 101 slightly forward of a toilet body 101a.
An entrance 121 of the drain trap 102 is provided on the bottom wall of the dirt drop recess 112 at the bottom of the ball 101. In addition, the front wall of the dirt dropping recess 112 faces the entrance 121 of the drain trap 102 so as to face the jet discharge port 1.
06 (wash water discharge port) is set up facing the same. When the washing water is discharged from the jet water outlet 106, so-called jet washing is performed, in which the dirt of the ball portion 101 is conveyed together with the washing water from the drain trap 102 to wash the toilet.

The drain trap 102 has a riser 122 formed by rising from an inlet 121 and a riser 12
2 and a drainage port 125 at the lower end of the toilet
And a downcomer 123 leading to For this reason, when the washing water is sent to the drain trap 102, the air above the weir 127 is flushed to cause a siphon action, and the dirt and the washing water in the dirt sinking recess 112 are removed from the drain trap 10.
I am drawn to 2.

The toilet 100 is provided with a water supply valve 105 and a water supply valve 105 for storing water in the ball portion 101.
And an introduction pipe 105a for guiding the washing water to the water rim 103. The water supply valve 105 opens a pipeline from a water supply source for a predetermined time after flushing the toilet, and supplies a necessary amount of flush water to the stored water. Therefore, the water supply valve 105 allows the introduction pipe 105
When the washing water is led to the water passing rim 103 via a, the washing water flows down from the rim water outlet 132 toward the surface of the ball portion 101, and the water is stored in the ball portion. Note that the surface of the ball portion is washed by the flow of the washing water on the surface of the ball portion during the accumulated water.

Further, the toilet 100 is provided with a toilet body 101a.
The washing water storage part 104 is provided in front of the washing water storage part 104. The washing water storage part 104 is formed by being partitioned by the ball part 101 and the partition wall 101b. In this case, the washing water storage unit 104 is formed inside a pedestal that supports the ball unit 101.

The washing water storage section 104 has a communication hole 141 communicating with the jet water outlet 106. The jet outlet 106 is opposed to the inlet 121 of the drain trap 102 and serves as a passage for washing water. For this reason, if the washing water is stored in the ball portion 101 as described above,
The washing water flows into the washing water storage unit 104 via the jet water outlet 106 and the communication hole 141. Therefore, a predetermined amount of wash water is stored in the wash water storage unit 104 every time the water is stored. Further, the ball portion 1 is passed through the communication hole 141 and the jet water outlet 106 from the side of the washing water storage portion 104.
Cleaning water can also be poured into 01. In the first embodiment, the inner volume of the flush water storage unit 104 is set to about 0.5 liter, and the flush water is used for flushing the toilet. In other words, the amount of water stored in the washing water storage unit 104 is approximately 1 to the normal amount of stored water 2 liters in the ball unit 101.
/ 4. A very small air hole is provided at the top of the washing water storage unit 104 so that the flow of the stored water into the washing water storage unit 104 is not hindered. Have been.

The toilet 100 is provided with a water jet channel 161 formed below the washing water storage section 104, and has an air nozzle 372 at the back (left side in the figure). The tip of the air nozzle 372 has a cleaning water storage section 104.
Of the toilet wall 10 in front of the communication hole 141 of the toilet.
1c is fixed in a watertight manner, and is connected to a compressor 374 which is a source of pressurized air. In other words, a jet pump is configured by the air nozzle 372 and the z-conducting channel 161 located in front of the air nozzle 372 and serving as a passage for fluid from the nozzle. The compressor 374 is controlled by a controller 376, and the controller 376
8 according to the signal (optical signal) from the air nozzle 372
Start or stop the pressurized air supply from.

Therefore, when the operation panel 378 sends an optical signal for flushing the toilet to the controller 376 and the compressor 374 sends the pressurized air under pressure, the air nozzle 372 sends the pressurized air to the jet water conduit 161 at high speed and high pressure. Discharge. This pressurized air causes an ejector action when passing through the Z-head conduit 161, and causes the washing water storage unit 104.
Involve the washing water inside.

For this reason, the jet 1
To 21, the discharge air (pressurized air) whose flow rate has been amplified and the instantaneous flow rate has increased due to the entrainment of the wash water in the wash water storage section 104 is directly discharged along the Z water conduit 161. Therefore, a large amount of pressurized air containing washing water is sent into the drain trap 102 at a time. In such a cleaning of the ball portion 101 (jet cleaning), only pressurized air is discharged, but flow-amplification cleaning water flows into the ball portion 101. And the filth in the filth drop recess 112 is
The water is flushed by the large amount of washing water, is strongly pushed into the drain trap 102, and is discharged from the drain trap 102. That is, the wastewater in the ball portion is transported to the outside of the toilet by the cleaning water mixed air that has caused the flow rate amplification and the instantaneous flow rate increase by the jet pump, and the toilet is cleaned. Therefore, high cleaning performance can be maintained. In addition, since it is not necessary to discharge the cleaning water from the water supply source when transporting the waste, the cleaning water for transporting the waste is stored in the cleaning water storage unit 10.
Only a small amount of washing water in 4 is needed. Specifically, the amount of water for forming the jet stream may be about 0.5 liter as described above. Therefore, further water saving can be achieved.

When the discharge of the washing water from the jet water outlet 106 is completed, the operation panel 378 operates the water supply valve 105.
The water supply valve 105 opens and closes the pipeline in response to this. Therefore, as described above, the stored water and the cleaning water for cleaning the surface of the ball portion are discharged from the water flowing rim 103.

As described above, the water supply from the water supply source only needs to be from the water flow rim 103 for storing the water in the ball portion 101, and there is no need to discharge the cleaning water from the water supply source to the ball portion 101. In addition, a constant pressure of pressurized air can be sent from the compressor 374 regardless of the level of the water supply pressure of the water supply source. Therefore, about 2.94 × 10 ⁴ Pa
Even in a low water pressure area of about (about 0.3 kgf / cm ² ) or an area or time when the water pressure drop to this level occurs frequently, high washing performance and high water saving can be achieved. Therefore, the area where the low silhouette type toilet can be installed can be expanded.

The following advantages are obtained if the pressurized air is continuously discharged from the air nozzle 372 even after the siphon effect generated in the drain trap 102 has disappeared. Even if the dirt is returned together with the washing water from the riser pipe 122 when the siphon action is extinguished for some reason, this dirt is discharged by the pressurized air to remove the dirt.
Can be blown off to the riser pipe 122 and, consequently, the descender pipe 123. Therefore, the reliability of the waste transport can be improved.

Next, a second embodiment will be described. FIG.
Is a schematic configuration diagram of a toilet bowl 400 of a second embodiment. The toilet bowl 400 according to the second embodiment has a flush water discharge from the water flowing rim 103 immediately after the start of flushing the toilet, a flush water discharge from the jet water outlet 106, and a flush water from the water flowing rim 103 again. And discharge are sequentially performed. That is, the toilet bowl 400 sequentially performs rim cleaning / jet cleaning / rim cleaning, and performs ball portion surface cleaning in the first rim cleaning.
The contaminated material and the toilet bowl are washed by the jet washing, and the water in the ball portion 101 is stored in the last rim washing. Further, a cleaning water supply system for rim cleaning and a cleaning water supply system for jet cleaning are separately provided.

As shown, the toilet bowl 400 has a water stopcock 402 which is connected to a water supply source and is normally in a valve open state. Further, the toilet bowl 400 has a rim-side connecting pipe 404 and a jet-side connecting pipe 406 that are branched downstream of the water stopcock 402.
And The rim side connecting pipe 404 is provided with a rim valve 4 which is opened and closed by a control device (not shown) in the middle of the pipe.
08 to direct the washing water from the water supply source to the water rim 103 when the valve is opened. That is, the water rim 103
Is supplied water pressure (flow pressure F) applied to the rim side connection pipe 404.
Cleaning water is supplied as it is in p), and this cleaning water is discharged from the rim water outlet 132 to perform the rim cleaning described above. Then, the ball surface cleaning is performed in the initial rim cleaning, and the stored water in the ball portion 101 and the cleaning water storage portion 104 are performed in the final rim cleaning.
Cleaning water is supplied.

The jet side connecting pipe 406 is connected to the pressurized tank 4
10 is connected to the import side of a control valve 412 incorporated in the pressure tank 410 via the control valve 412.
Supply the washing water from the water supply source inside. Note that a check valve 405 that shuts off the flow of the washing water from the pressurized tank 410 side is arranged in the pipeline of the jet-side connecting pipe 406.

A connection pipe 137 having a jet valve 414 in the middle of the pipe is connected to the out port of the control valve 412, and the washing water in the pressurized tank 410 is sent to the discharge nozzle 35 via the connection pipe 137. . The discharge nozzle 35 is installed on the inner side of the jet water conduit 161 and faces the inlet 121 via the jet water outlet 106. Therefore, if the cleaning water is discharged from the discharge nozzle 35,
By the jet pump constituted by the discharge nozzle 35 and the Z water conduit 161, the flow-amplified cleaning water is discharged toward the inlet 121, and the jet cleaning described above is performed. And by this jet cleaning, waste conveyance and toilet cleaning are performed. Note that the jet valve 414 is also opened and closed by the control device.

The pressurized tank 410 maintains the pressurized washing water in the tank at a predetermined pressure by a control valve 412 of the pressurized tank 410, and the connecting pipe 137 always supplies the cleaning water in the tank to the discharge nozzle 35 at this predetermined pressure. Is sent out. This has the following advantages.

Flow pressure F applied to jet-side connecting pipe 406
p changes depending on the use condition of another faucet or the like, and may drop to about 1/5 of the feed water stop pressure Sp which is the primary side set pressure. The pressurized tank 410 introduces the cleaning water into the tank by the control valve 412 even if the cleaning water is guided from the jet-side connection pipe 406 at the fluid pressure Fp.
And when sending out the washing water in the tank, the washing water in the tank pressurized to the water supply stop water pressure Sp in the tank,
The water is supplied to the connection pipe 137 at the water supply stop pressure Sp. Therefore, even if the fluid pressure Fp decreases, the cleaning water pressurized to the water supply stop water pressure Sp can be always sent to the discharge nozzle 35.

In this case, the washing water flow rate Q and the tank capacity V which can be sent out at the water supply stop water pressure Sp were calculated as follows.

When the pressurized tank 410 is in a state in which flush water can be supplied to the discharge nozzle 35 at the flush water flow rate Q at the flush stop water pressure Sp, the pressure in the air in the pressurized tank 410 is the flush water stop pressure Sp. Assuming that the air volume at this time is V1, the following relational expression is established from the state equation (PV = nRT).

(1 + Sp) V1 = nRT

On the other hand, after the cleaning water in the tank is sent out, the pressurized tank 410 is entirely filled with air, and the air pressure is the fluid pressure Fp. Therefore, the following relational expression is established from the state equation.

(1 + Fp) V = nRT

Since the tank capacity V is equal to the sum of the air volume V1 and the flow rate Q of the washing water, the above equation becomes as follows.

(1 + Fp) (V1 + Q) = nRT

In these two states, the number of moles of air in the container and the temperature are equal, so the following relational expression is established.

(1 + Sp) V1 = (1 + Fp) (V1 + Q) V1 = ((1 + Fp) Q) / (Sp−Fp)

In this embodiment, since the jet cleaning is performed with the flow amplification cleaning water by the jet pump, the flow rate Q of the cleaning water is set to about 1.2 liters. And the water supply stop water pressure Sp
Was set to 1.47 × 10 ⁵ Pa (1.5 kgf / cm ² ), and the fluid pressure Fp was set to 4.9 × 10 ⁴ Pa (0.5 kgf / cm ² ).
² ), the air volume V1 is 1.8 liters. That is, the tank capacity V of the pressurized tank 410 is 3.0
Liters. As described above, since the tank capacity V may be as small as 3 liters, the pressurized tank 410 may have a size that can be incorporated into the toilet main body 101a.

When a jet pump is incorporated on the rim side, and the wash water is sent from the pressurized tank 410 to the discharge nozzle of the jet pump on the rim side at the feed water stop water pressure Sp, the pressurized tank 410 is connected to the jet pump. Min tank capacity V
Should be large.

In the above-mentioned toilet bowl 400, the toilet bowl is cleaned as follows. First, before the toilet flushing is performed, the rim valve 408 and the jet valve 414 are in a closed state, and the water stopcock 402 is open. Flows in. Before the flushing of the toilet, the washing water in the tank is supplied to the pressurized tank 410 by the water supply stop water pressure Sp.
Pressurized.

When the cleaning button on the operation panel (not shown) is pressed, the rim valve 408 is opened first. This allows
The cleaning water is guided from the water supply source to the water passing rim 103, and the rim cleaning for the ball surface cleaning is performed as described above. Next, the jet valve 4 is closed simultaneously with the closing of the rim valve 408.
The valve 14 is opened, and the pressurized washing water is sent from the pressurized tank 410 to the discharge nozzle 35 via the connecting pipe 137. Therefore, the discharge nozzle 35 discharges the pressurized cleaning water at a high pressure (water supply stop water pressure Sp) at a high speed. For this reason, even if the fluid pressure Fp is low, the washing water can always be discharged from the discharge nozzle 35 at the high water supply cutoff pressure Sp. Further, even when the flow rate of the water supplied from the water supply source is small, the flush water having the amount of water that can be supplied in the pressurized tank 410 (the flush water flow rate Q described above) is supplied to the water supply stop pressure Sp.
At the discharge nozzle 35. Then, the washing water in the washing water storage section 104 is involved in the ejection of the washing water so as to amplify the flow rate and increase the instantaneous flow rate.

Therefore, even in the toilet bowl 400, high flushing performance and water saving can be achieved by discharging the flow-amplified flush water by the jet pump. Moreover, since such high washing performance and water saving are realized irrespective of the level of the fluid pressure Fp, even in a low water pressure area where the water supply stop water pressure Sp is originally low or at a time when the water supply pressure is low for some reason, High washing capacity and high water saving can be achieved. In addition, even in an area where the amount of water supplied to the toilet bowl 400 is small due to the large amount of water used in the other faucet, or even when the amount of water supplied to the toilet bowl 400 is originally small, high washing capacity and High water savings can be achieved. Therefore, the area where the low-silhouette type toilet can be installed can be expanded to a low water pressure area and a low flow rate area.

When the jet cleaning described above is completed, the rim valve 4 is closed simultaneously with the closing of the jet valve 414.
08 is opened, and the rim cleaning for replenishment of the stored water of the ball portion 101 and the cleaning water storage portion 104 described above is performed again.

Next, a third embodiment will be described. The third embodiment is characterized in that pressurized cleaning water is discharged only at a low water supply pressure. In the third embodiment, the following configuration is added to the above toilet bowl 400. As shown by a two-dot chain line in FIG. 2, the third embodiment has a discharge nozzle 35C in line with the discharge nozzle 35. Then, to the discharge nozzle 35C, the cleaning water from the water supply source is guided to the discharge nozzle 35C at the current water supply pressure via a bypass pipe 415 that branches off from the jet side connection pipe 406 and bypasses the pressurized tank 410 and a connection pipe 137C. In this case, the bypass pipe 415 is provided with a jet valve 417 that opens and closes the pipe.
For convenience of description, the jet valve 414 will be referred to as a first jet valve 414, and the jet valve 417 will be referred to as a second jet valve 414.
The two valves are called jet valves 417 to distinguish them. Further, the discharge nozzle 35 is connected to the first discharge nozzle 35.
And the discharge nozzle 35C is referred to as a second discharge nozzle 35C, and the two nozzles are distinguished from each other.

Therefore, in the third embodiment having the above-described structure, the first discharge nozzle 35 and the second discharge nozzle 35C can be selectively used.
Toilet flushing can be performed with the flow amplification flushing water. In the third embodiment, both nozzles are selectively used as follows. FIG. 3 is a flowchart illustrating the toilet flushing process performed in the third embodiment.

The toilet flushing process shown in FIG. 3 is executed every time the flush button on the operation panel is operated by the control device (not shown) of the toilet of the third embodiment. When this process is started, first, the rim valve 408 is opened (step S500), the first rim cleaning for ball surface cleaning is performed, and the pipeline is placed under fluid pressure. Next, the water supply pressure P (flow pressure Fp) at that time is read from a pressure sensor (not shown) provided downstream of the water stopcock 402 (step S50).
5). Then, the read water supply pressure P becomes a predetermined pressure P
It is determined whether the value is equal to or greater than 0 (step S510).
This pressure P0 is about 6.86 × 10 ⁴ according to the present embodiment.
Pa (about 0.7 kgf / cm ² ), and
With this level of pressure, even if the washing water from the water supply source is directly ejected from the ejection nozzle, high-speed and high-pressure washing water can be ejected from this nozzle. The above pressure P0 is specified as being obtained to an extent suitable for cleaning.

If an affirmative determination is made in step S510, the water supply pressure at that time is high, so the subsequent step S520
Then, the following valve control is performed, and the jet cleaning / rim cleaning is sequentially performed after the first rim cleaning. That is,
First, the rim valve 408 is closed to finish the first rim cleaning, and then the second jet valve 417 is opened. As a result, the washing water from the water supply source is directly sent to the second discharge nozzle 35C with the water supply pressure at that time, and the second
Cleaning water is discharged from the discharge nozzle 35C at high pressure and high speed, and jet cleaning using the second discharge nozzle 35C is performed. At this time, as described above, it is possible to achieve high washing performance and water saving by involving the washing water in the washing water storage unit 104, and to surely carry out filth transfer and toilet flushing. After that, the second jet valve 41
7 and the rim valve 408 are opened again,
Perform a final rim wash to replenish the pool and wash water.

On the other hand, if a negative determination is made in step S510, the water supply pressure at that time is low, so that even if the cleaning water is discharged from the discharge nozzle at that pressure, high-pressure and high-speed cleaning water discharge cannot be expected. Therefore, in this case, step S53
At 0, the following valve control is performed, and the jet cleaning / rim cleaning is executed sequentially after the first rim cleaning. First,
As in the case of step S520, the first rim cleaning is completed through closing of the rim valve 408. Subsequently, through the control of the first jet valve 414, the cleaning water that has already been pressurized in the pressurized tank 410 up to the water supply stop water pressure Sp is sent to the first discharge nozzle 35, and the high pressure water is discharged from the first discharge nozzle 35.・ Implement cleaning water discharge at high speed. Therefore, in this case as well, high cleaning performance and water saving can be achieved by the jet cleaning using the first discharge nozzle 35, and also the filth transfer and the toilet cleaning can be reliably performed. Thereafter, as in step S520, the rim valve 40
The final rim cleaning is performed through the control 8 again.

In the above-described toilet bowl of the third embodiment, when flushing the toilet with the flow-amplified flush water using the jet pump, the flush water that has been pressurized in the pressurized tank 410 in advance is used when the supply pressure is low. The high-pressure, high-speed discharge is performed from one discharge nozzle 35, and the flow-amplification cleaning water flows into the inlet 121 (step S530). On the other hand, when the water supply pressure is high,
The water from the water supply source is discharged from the second discharge nozzle 35C with the high water supply pressure, and the flow-amplified cleaning water flows into the inlet 121 (step S520). Therefore, even with the toilet of the third embodiment, it is possible to achieve high washing performance and high water saving irrespective of the level of the water supply pressure, and it is possible to surely carry out filth transfer and toilet washing.

Next, a fourth embodiment will be described. The fourth embodiment is characterized in that cleaning water mixed with pressurized air is discharged from a discharge nozzle. FIG. 4 is an enlarged sectional view of a main part of the fourth embodiment. As shown in the figure, the toilet of the fourth embodiment is provided with a discharge nozzle 435 in place of the discharge nozzle 35 of the above-mentioned embodiment, which is fixed to the toilet wall surface 101c in a watertight manner. The directivity and the like of the discharge nozzle 435 are the same as those of the discharge nozzle 35.

The discharge nozzle 435 has an air mixture 436 near the connection with the connecting pipe 137. This air mixture 436 is a porous air mixture pipe section 4.
37 and a closed chamber 439 that hermetically surrounds the closed space 37. The air mixing pipe section 437 only needs to be able to mix air from the outside into the fluid (washing water) flowing therein, and there is no restriction on the material or manufacturing method. An example of the air mixing tube section 437 will be described later. In addition, if the air mixing pipe portion 437 is formed of a porous body having fine holes as independent openings that can perform a gas-liquid separation function that does not allow liquid such as water to permeate but allow gas such as air to permeate, This is more preferable because the inflow of the washing water into the mixing pipe portion 437 can be easily prevented.

Since the air mixing pipe portion 437 is a porous body, the fine holes in the air mixing pipe portion 437 are not unevenly distributed but exist in a regular opening arrangement. Further, pressurized air is pressure-fed from the pressurizing pump 440 to the closed chamber 439. For this reason, the washing water sent from the connecting pipe 137 passes through the discharge nozzle 435 along the pipe, and the washing water flows from the air mixing pipe 437 into the pipe downstream of the air mixing pipe 437. The permeated pressurized air mixes. Therefore, the discharge nozzle 43
From 5, cleaning water mixed with pressurized air is discharged,
The flow rate-amplified cleaning water obtained by the jet pump constituted by the discharge nozzle 435 and the Z water conduit 161 flows into the inlet 121.

In this case, the pressure pump 440 may have a pressure of about 4.9 × 10 ^{4 to} 9.8 × 10 ⁴ Pa (about 0.5 to 1.0 Pa).
Any type can be used as long as it can perform steady operation with a pumping capacity of about 0 kgfcm ² ), and various types such as a rolling pump, a vane pump, a rotary pump, and a linear pump can be employed.

Here, how air is mixed into the cleaning water in the air mixing pipe section 437 will be described. Air mixture 4
Since 36 functions as a bubble pump, it can be shown as a schematic diagram in FIG. 5 schematically illustrating the concept of the pump. As shown in FIG. 5, this bubble pump 8
0 is an aerated mixed housing 81 corresponding to the closed chamber 439
And a bubble dispersing element 83 supported by an air chamber 82 therebetween. This air bubble dispersion 83 is the air mixing tube section 437. In this case, the diameter of the washing water pipe 84, the diameter of the central through hole of the bubble dispersion 83, and the like are the same as the diameter of the connecting pipe 137 and the diameter of the through hole of the air mixing pipe section 437 shown in FIG. 6 to 15 mm.

[0098] The bubble dispersion 83 forms a continuous pipe line with the washing water pipe 84, and is provided with a large number of independent openings on the surface in contact with the washing water flowing through the pipe, that is, the entire circumference of the pipe wall. Therefore, the air pressure-fed from the air introduction pipe 85 to the air chamber 82 is sent into the pipe from each of the above-described independent openings of the bubble dispersion 83, and expands at each of the openings. In this case, the air chamber 82
Functions as a buffer region for absorbing pressure fluctuations and pressure distribution of the pumped air, so that the air passes through the bubble dispersion member 83 without causing a significant speed difference. The air swells are cut off by the shearing force received from the flow of the cleaning water at the respective openings, and become bubbles, which are individually mixed into the cleaning water.

In this embodiment, the independent openings in the bubble dispersion 83 (air mixing tube section 437) are formed such that the diameter of bubbles formed from each independent opening is about 100 to 1000 μm. Therefore, bubbles having such a small diameter are independently mixed and mixed into the cleaning water. In addition, since each bubble maintains a state of a closed cell from the beginning of formation and has a substantially spherical shape having a small diameter depending to some extent on the independent opening, it has high rigidity and is hardly deformed. For this reason, the chance of coalescence of the mixed air bubbles is reduced, and the coalescence of the air bubbles itself can be made difficult to occur. It can be flow. At this time, the bubbles are individually formed from the respective independent openings as described above, and are mixed with the washing water in a state of independent bubbles, so that the bubbles are mixed with the washing water from the beginning with high dispersion efficiency.
That is, air mixing, miniaturization,
Dispersion mixing will be performed simultaneously.

Since the bubble dispersion 83 forms a continuous pipe line to the washing water pipe 84, the flow of the washing water does not cause turbulence or stagnation. Opportunities can be reduced. Also, the washing water pipeline 8
Since a large number of independent openings are provided along the flow direction of the washing water in No. 4, air bubbles can be mixed from many places in the flow direction of the washing water to reduce the bubble generation density. Therefore, even if a large amount of air is mixed in from the bubble dispersion body 83, coalescence of bubbles at the time of bubble generation hardly occurs and fine closed cells can be generated.

As described above, the air mixture 436 schematically represented as the bubble pump 80 ensures that the bubbles are dispersed and mixed in the washing water so that the bubbles do not easily coalesce. Therefore, the flow of the cleaning water downstream of the air mixture 436 becomes a cleaning water flow of a bubble flow as shown in FIG. 6 (FIG. 6A), and a slag flow in which a gas phase mixed in the cleaning water exists as a continuous phase. (FIG. 6B) and the annular flow (FIG.
(C)) or the undesired flow of the spray flow (FIG. 6 (d)). Therefore, in this embodiment, the momentum (energy) of the compressed air can be reliably, efficiently, and quickly transmitted to the cleaning water. In addition, fine bubbles have high rigidity and are not easily deformed, and do not perform unnecessary movement, so that energy loss is small. When the photograph of the flow of the washing water jetted from the bubble pump 80 was photographed, as shown in the read image of the photograph in FIG. 7, the jetted cleaning water jet spouted straight from the jet port without spreading. There was found. In addition, the jet cleaning water flow was milky white because it was a bubble flow in which bubbles were dispersed and mixed as described above.
In the present embodiment (fourth embodiment), the cleaning water is discharged from the discharge nozzle 435 in the state of the bubble flow obtained in this manner, and the jetted cleaning water is supplied to the jet water conduit 161.
Then, the washing water in the washing water storage unit 104 is involved to make flow rate amplified washing water. Then, this flow amplification cleaning water is supplied to the inlet 1
Pour toward 21 to carry out filth transfer and toilet flushing.

Here, the air mixing tube 437, that is, the air bubbles dispersed and mixed by the air bubble dispersion 83 of the air bubble pump shown in FIG. 5 will be described. The bubble diameter immediately after being generated by the bubble dispersion 83 was measured, and the relationship between the bubble diameter and the flow rate of the washing water flowing into the bubble pump 80 was examined. For measuring the bubble diameter, the washing water flow was photographed with a high-speed video camera equipped with a macro lens, and the image was enlarged and measured for dimensions. The result is shown in FIG.
Shown in The vertical axis in FIG. 8 is a logarithmic axis of the diameter of the generated bubble.

As shown in FIG. 8, the bubble diameter immediately after the bubble generation changes depending on the flow rate of the flowing washing water. The bubble diameter decreases as the washing water flow rate increases, and the bubble diameter decreases as the washing water flow rate decreases. Was found to have a growing relationship.
This can be explained as follows. In other words, as the flow rate of the washing water increases, the shearing force involved in cutting off the bubbles increases, so that the bubbles increase as the flow rate of the washing water increases. From this, it is possible to control the generated bubble diameter by changing the flow rate of the washing water when generating the bubbles. In this case, if the flow rate of the washing water flowing into the air mixing pipe 437 (the bubble dispersion 83) is substantially constant, the air mixing pipe 4
The bubble diameter can be controlled by changing the washing water flow velocity by changing the washing water passage cross-sectional area in 37 (bubble dispersion 83). Further, if the cross-sectional area of the washing water passage in the air mixing pipe section 437 (bubble dispersion 83) does not change as in this embodiment, the bubble diameter can be controlled by controlling the washing water flow rate. Also,
If the effect of the shearing force is the same, the bubble diameter of the generated bubble is approximately proportional to the open area of the surface of the air mixing pipe portion 437 (bubble dispersion 83) in contact with the washing water. It may be controlled. In this embodiment, the cleaning water flow rate is set to about 2
４4 m / s, the generated bubble diameter is about 100 to about 1000
It was ensured that it was within the range of μm.

The relationship between the residence time in the pipe and the growth of bubbles due to the coalescence of the bubbles in the above-mentioned bubble flow obtained in the air mixing tube portion 437 (bubble dispersion 83) was examined. The bubble diameter is measured at the two measurement points separated by different distances from the ejection port of the bubble pump 80 by the above-described measurement method. It was calculated from each distance and the washing water flow rate. FIG. 9 shows the result. The vertical axis in FIG. 9 is a logarithmic axis representing a bubble diameter growth ratio obtained by dividing the grown bubble diameter D by the bubble diameter Db at the time of generation.

As shown in FIG. 9, even if the bubble flow stays in the pipeline for about 12 ms, the bubble grows only about 2.5 times, and even if the bubble stays in the pipeline for about 17 ms. Bubbles grew only about four times.

Further, a bubble pump 80 having a washing water pipe 84 having various diameters is prepared, and a washing water passage pipe having a pipe length of about 100 mm is connected to an ejection port of the bubble pump 80.
The relationship between the pipe diameter and the residence time of the washing water in the passage pipe was examined.
In this case, the washing water passage pipe corresponds to a nozzle pipe part downstream of the air mixing pipe part 437 of the discharge nozzle 435 in this embodiment. The result is shown in FIG. Wash water was poured into the bubble pump 80 at a flow rate of 8 liters / minute, and air was pumped and mixed into the bubble dispersion 83 at a flow rate of 16 liters / minute through an air introduction pipe 85. In this case, the air mixing ratio (air mixing amount / wash water amount) is 200%.

The residence time of the washing water (bubble flow) in the nozzle pipe portion of the discharge nozzle 435 having a pipe length of about 100 mm is as shown in FIG. 10 because the pipe diameter is about 7 mm.
As shown in FIG. Therefore, when the result of FIG. 9 is applied to the toilet of the present embodiment having the discharge nozzle 435, about 100 to 1 generated by the air mixing pipe portion 437 is obtained.
A bubble having a diameter of 000 μm is increased by about 2.8 times to about 280 to 280.
Only grow to 0 μm. For this reason, the discharge nozzle 43
From 5, the cleaning water is discharged in a bubble flow in which the bubbles are still dispersed and mixed in a fine state, and the cleaning water in the cleaning water storage unit 104 is involved in such discharged cleaning water to increase the flow rate. Water. Then, the flow-amplified cleaning water is poured toward the inlet 121 to carry out filth transfer and toilet flushing.

Next, the effect obtained by the air mixture 436 will be described with reference to the bubble pump 80 shown in FIG. First, the effect of increasing the momentum of the washing water due to air mixing will be described. The momentum of the washing water can be grasped by the load caused by the ejected washing water when the washing water is ejected from the ejection port of the bubble pump 80. Therefore, the load-side fixed device was arranged opposite to the ejection port of the bubble pump 80, and the load of the jetted washing water was measured for the washing water of the bubble flow having various air mixing rates. The result is shown in FIG. Note that the vertical axis in FIG. 11 is a load ratio obtained by dividing the washing water that is not mixed with air (air mixing ratio = 0) by the load obtained when the cleaning water is ejected from the bubble pump 80. Also,
In the figure, what is taken as the present embodiment means a bubble pump 80 equivalent in size and the like to the air mixture 436. What is considered to be the prior art is a bubble pump in which a tube having only a single aeration hole formed in the peripheral wall is incorporated in place of the bubble dispersing member 83, and air is simply introduced from the branch pipe into the pipe. This is a conventional method that merely mixes in the conventional method. The straight line indicated as the theoretical value in the figure is derived as follows.

The momentum Eu of the fluid passing through the pipeline can be expressed by the following equation (1), where S is the pipeline area, ρ is the fluid density, and V is the fluid velocity.

Eu = ρ · S · V ² (1)

Since the density ρa of the air is negligibly small compared to the density ρw of the water, the density of the mixed cleaning water in which air is mixed into the cleaning water is determined by the air mixing ratio η (air flow rate / wash water flow rate) and the cleaning water rate. Ρw / (1 + η) from the density ρw of The speed of the mixed washing water is V · (1 + η) from the air mixing ratio η and the washing water speed V. Therefore, the momentum Eu of the mixed cleaning water having the air mixing ratio η is expressed by the following equation (2).
Can be expressed as

Eu = (ρw / (1 + η)) · S · V ² · (1 + η) ² = ρw · S · V ² · (1 + η) (2)

Then, the momentum of this equation (2) is calculated as the momentum (ρw · S · V) of the non-air mixed cleaning water (air mixing ratio = 0).
^The momentum ratio (1 + η) divided by ² ) corresponds to the load ratio described above, and this momentum ratio is shown in the figure as a theoretical value. The mixed wash water at this theoretical value is not only wash water of a bubble flow in which air is ideally dispersed and mixed in the wash water, but also wash water of an undesired flow aspect such as a slag flow in which a continuous gas phase exists. is not. Therefore, the closer the load ratio is to the theoretical value, the more the wash water is a bubble flow in which air is ideally dispersed and mixed.

From FIG. 11, the load ratio in the prior art is different from the above theoretical value from the time of the air entrapment ratio lower than 1.
When the air mixing ratio is about 1.3, only a load ratio of about 1.5 can be obtained. Therefore, in the prior art, even if the air mixing ratio is increased to 1 or more with respect to the flow rate of the cleaning water, it is not possible to obtain a bubble flow in which air is ideally dispersed and mixed in the cleaning water, and undesired flows such as slag flow. It only has a flowing appearance. For this reason, even if an attempt is made to save water through the incorporation of air into the washing water, because of this undesirable flow aspect, the washing power is reduced as described above. Need. In addition, in this prior art, even when the air mixing ratio is about 1.3 or more, no increase change is observed in the load ratio.
It is considered that, as described above, this air entrapment ratio is reversed to the spray flow, and no further increase in momentum can be obtained.

On the other hand, in the present embodiment, the above-mentioned theoretical value was met and a high load ratio of about 4.5 at the maximum could be obtained until the air entrapment ratio was almost close to 4. Therefore, according to the present embodiment, even with a high air mixing ratio of 1.3 or more, which is reversed to the spray flow in the prior art, a bubble flow in which air is ideally dispersed and mixed in the wash water can be reliably achieved. Can be obtained. Therefore, the momentum of the cleaning water can be surely increased by mixing with air through the use of the cleaning water of the bubble flow. Therefore, a small amount of cleaning water is discharged from the discharge nozzle 4
It is only necessary to supply water to 35, and the effectiveness of water saving can be enhanced. This is because, as described above, the air is mixed with fine bubbles and dispersed and mixed by the air mixing pipe portion 437 (bubble dispersion 83) having the above-described independent openings.

Further, since it is in agreement with the above theoretical value, especially in the range of the air entrapment ratio up to about 3, it very well matches, so that the momentum of air can be transmitted to the washing water without loss. Therefore, the energy input when air is mixed (eg, air pressure energy), specifically, the driving energy of the pressure pump 440 can be reduced. This is considered to be due to simultaneous mixing and dispersion mixing with fine bubbles.

Also in this embodiment, as the air mixing ratio approaches 4, the degree of increase in the load ratio decreases. This is presumably because, even if mixing with fine bubbles and dispersion mixing are performed through the independent openings, the chances of bubble coalescence increase due to an increase in the air mixing rate, and bubble coalescence occurs to some extent.
Therefore, even in the case of mixing and dispersion and mixing of microbubbles through the independent openings, if the air mixing ratio exceeds 4, phase change to a spray flow may occur. Therefore, the air mixing ratio in this embodiment is 4 or less. It is preferable that

Next, the energy efficiency when air is mixed in the air mixture 436 will be described using the bubble pump of FIG. In FIG. 5, P represents the pressure of the fluid, V represents its velocity, Q represents its flow rate, and ρ represents its density. The subscript w attached to these symbols indicates that it is for water, the subscript a indicates that it is for air, and the subscript t indicates that it is for a bubble flow. However, for Pa, the air pressure loss when passing through the bubble dispersion is excluded, and the air density ρa
Is so small as to be negligible compared to the density of water ρw, so that the kinetic energy of the air itself is neglected.

In the bubble pump 80 shown in FIG. 5, the energy of the cleaning water increases due to the inclusion of bubbles as described with reference to FIG. Assuming that the energy of the cleaning water flowing in is Ew and the energy of the cleaning water flowing out, that is, the cleaning water of the bubble flow is Et, the energy amplifying effect due to the inclusion of bubbles is Et.
/ Ew. Further, the energy of the compressed air is Ea
Then, the energy efficiency of the bubble pump 80 is expressed by Et / (Ew + Ea) obtained by dividing the output energy by all the input energies, and is the total efficiency of the pump. The energy amplification effect Et / Ew, the overall efficiency Et / (Ew + Ea) and the air mixing ratio η (Qa /
Qw) is shown in FIG. In this case, the respective energies can be represented by the following equations.

Energy of cleaning water flowing in Ew = PwQw + (ρw / 2) QwVw ² ... Energy of cleaning water (bubble flow) flowing out Et = PtQt + (ρt / 2) QtVt ² ... Energy of compressed air Ea = PaQa.

From FIG. 12, if the cleaning water of the bubble flow described above in this embodiment is used (see FIGS. 6A and 7), and the air mixing rate at that time is changed from 1.3 to 4.0, It is preferable in view of the energy amplification effect Et / Ew and the total efficiency Et / (Ew + Ea).

That is, as described above, when the air mixture 436 serving as a bubble pump independently generates fine single bubbles when air is mixed in and disperses and mixes a large amount in cleaning water, the momentum of air is reduced. It can be transmitted to the water and the momentum of the washing water can be surely increased. When the bubble generation, dispersion, and mixing are performed simultaneously, the bubble speed becomes almost the same as the washing water speed immediately after the bubble is mixed. Therefore, it functions as a bubble pump that can transmit the pressure momentum of the air to the cleaning water very efficiently.In addition, if the bubble diameter is small, the rigidity is high, so that unnecessary deformation and vibration do not occur in the cleaning water. Energy loss due to being in the wash water. If the air entrapment ratio exceeds approximately 4, the function as a bubble pump is reduced due to the transition from the bubble flow to the annular flow or the spray flow. Therefore, it is desirable that the air entrapment ratio be 4 or less in the operating conditions.

In view of the above, in the fourth embodiment,
The air mixing ratio η of the air mixture 436 was set to about 2. Specifically, the connection pipe 13 is supplied from the tap water supply source.
It is assumed that the flow rate of the washing water (tap water) to be supplied to the discharge nozzle 435 (discharge port diameter: φ7) via the nozzle 7 is about 8 liters / minute, and the air mixing ratio η
The pressure pump 440 was operated in a steady state so as to be (about 2).

Next, the discharge nozzle 435 and the Z water conduit 1
The degree of flow amplification that can be obtained by the jet pump according to the fourth embodiment constituted by 61 and the transition of the energy (jet energy) of the discharge cleaning water will be described.

As described above, the jet energy E of the washing water discharged from the jet discharge port 106 through the discharge nozzle 435 is such that the density of the water is ρw, the opening area of the jet discharge port 106 is S, and the jet flow velocity is V. Then, it is represented by the following formula.

E = (1/2) ρw · S · V ³

[0127] The zeta energy E expressed by this equation is obtained when there is no air mixing.

Now, assuming that air is mixed into the washing water at the mixing ratio η, the mixing ratio η is Qa / Qw, where Qa is the air flow rate and Qw is the cleaning water flow rate. Further, assuming that the density of the air is ρa, the cleaning water density ρ ′ in a state where the air is mixed at a mixing ratio η is obtained by using the water density ρw, the air flow rate Qa, the cleaning water flow rate Qw, and the air density ρa. It is expressed as follows.

Ρ ′ = (ρw · Qw + ρa · Qa) / (Qw + Qa) ≒ (ρw · Qw) / (Qw + Qa) = (ρw · Qw) / Qw · (1 + η) = ρw / (1 + η)

Accordingly, the jet energy E ′ of the cleaning water mixed with air at the mixing ratio η is expressed as follows.

E ′ = (１ ／) ρ ′ · S · V ³

By substituting the above ρ ′, V is calculated as (Qw + Qa)
By substituting this expression with / S, the zet energy E 'is expressed as follows.

E ′ = (１ ／) ρw · S · V ³ · (1 + η) ² = E (1 + η) ²

Therefore, according to the toilet of the fourth embodiment, by the above-mentioned dispersion and mixing of the air into the washing water passing through the discharge nozzle 435 and the flow amplification by the jet pump, the washing is performed only by (1 + η) ² times. The jet energy E of the water can be increased. For this reason, the discharge nozzle 4
Even if the supply pressure of the wash water sent to 35 is low,
With such a high energy, that is, in a state where the flow rate is amplified and the instantaneous flow rate is increased, the flow rate amplified cleaning water can be poured from the jet discharge port 106 toward the inlet 121. Therefore, even with the toilet of the fourth embodiment, it is possible to achieve high washing performance and high water saving irrespective of the level of the water supply pressure, and it is possible to surely carry out filth transfer and toilet washing.

Moreover, in the fourth embodiment, fine air bubbles are generated when air is mixed and dispersed and mixed in the washing water, so that a large amount of air bubbles can be stably mixed with the washing water. Therefore, as described above, the slag flow, the annular flow, and the spray flow do not have an undesired flow appearance, and the momentum of the washing water can be surely increased with a small input energy, and the water saving effect is high. Then, the cleaning water having the increased momentum is discharged from the discharge nozzle 435, and the flow-amplified cleaning water is poured toward the inlet 121 as described above, so that the toilet cleaning power is increased and further water saving is achieved, as well as wastewater. Transport reliability can be improved. The bubble diameter varies depending on the residence time after bubble generation.However, after the momentum of the air is reliably transmitted to the washing water and the speed of the bubble and the speed of the washing water become substantially the same, the air is almost completely lost. Since there is no energy, the behavior of air such as expansion of the bubble diameter does not affect the water saving rate.

Further, in the fourth embodiment, the shearing force between the washing water and the air, that is, the washing water speed, the opening area of the pores in the air mixing pipe portion 437, and the residence time after the generation of bubbles are controlled. By doing so, the bubble diameter can be controlled. By controlling the bubble diameter in this way, the discharge nozzle 43
It is also possible to control the toilet flushing power indicated by 5.

Next, the porous air mixing pipe section 437 for dispersing and mixing fine bubbles as described above will be described. In the above embodiment, the air mixing pipe section 437
Heat molding of approximately spherical particles of ultra-high molecular weight polyethylene,
Is formed. That is, when the substantially spherical particles are filled in a mold for forming the air mixing tube portion 437 and heat-molded, as shown in FIG.
The surface of 37 has independent openings in which voids are divided by particles, and is suitable for generating closed cells. Further, by filling the particles with substantially uniform particles, the openings are arranged regularly in a substantially lattice shape, and bubbles are less likely to coalesce at the time of generation. In addition, ultra-high molecular weight polyethylene generally has a low melt index (MI) and its properties when molten are close to rubber, so that it hardly flows even in a molten state, and the particles have a structure in which only the contacts are adhered without changing the shape. . The MI of the ultrahigh molecular weight polyethylene used here is 0.2
From 1.0, which is about 1/10 of that of a normal resin material for injection molding, so that the heating temperature is sufficiently controlled to melt the resin at a temperature slightly higher than the melting point of the resin. Are formed in a shape almost similar to point contact.
Since only the contact points are fused,
Since the surface shape is substantially determined by the shape, particle size distribution and packing ratio of the raw material particles, it has physical properties that make it very easy to control the surface properties even during production. Further, since it is chemically stable, it is suitable for a cleaning liquid containing chlorine, an acid base, an organic solvent, and the like, and is also suitable for application to water since it has almost no water absorption.

The air mixing tube 437 may be formed of substantially spherical particles of acrylic resin. FIG.
Shows the surface state of the air mixing tube portion 437 formed by heating substantially spherical particles of acrylic resin. The surface of the air mixing tube portion 437 has a structure close to a network structure due to the fact that the particles are bonded to each other, although the flowability is slightly high. This is also suitable. By filling substantially uniform particles, the openings are arranged regularly in a substantially lattice-like manner, and bubbles are less likely to coalesce during generation. The acrylic resin has a low surface tension and a high affinity for water. In addition, if the particle size distribution is uniform, the pore diameter is likely to be uniform and the pore shape is easy to control.

As described above, when a heat-fusible material obtained by heat molding is used for the production of the air mixing tube portion 437, particles having excellent strength against water pressure and air pressure due to fusion of particles are obtained. Can be provided. The average particle size of the particles is 5
Although pores having a diameter of 0 μm to 300 μm are used, pores can be controlled by controlling the particle diameter of the material, so that the bubble diameter of generated bubbles is determined by the average particle diameter of the material. When the particles having an average particle diameter of 50 μm to 300 μm are used, 100 μm to 100 μm
Pores are formed to obtain a bubble diameter of 0 μm. To increase the cell diameter, the particle diameter of the material may be increased, and to decrease the cell diameter, the particle diameter of the material may be decreased.

Further, even in a structure in which a fiber material such as nylon is knitted in a substantially lattice shape, the pores are separated from each other as shown in FIGS. If it is made substantially uniform, it is possible to obtain a regular lattice-shaped regular hole arrangement. Furthermore, since the fiber diameter and the interval can be set arbitrarily, it is suitable for controlling the surface shape such as the inter-pore distance, the pore diameter, and the opening ratio. FIG. 15 shows an example of a case where the air mixing tube section 437 is made of a nylon mesh. In the air mixing pipe section 437, a nylon mesh 90 having independent openings is formed by being heat-welded to a support body 91, and has sufficient strength.
The opening shape of the mesh 90 can be arbitrarily adjusted according to the thickness and the interval of the fibers used. In other words, when a fiber material is used, since the fiber itself usually does not have sufficient strength, stable operation can be ensured by installing the fiber material on the support. In addition, since the fiber surface slightly vibrates due to the flow, the generation of bubbles and the amount of local air entrapment change, and there is also an effect of suppressing the adhesion of dust and scale in water. In addition, since the pressure fluctuation of the cleaning water is easily transmitted to the air chamber because the fiber material etc. does not have sufficient thickness, unstable behavior may occur when air is mixed, and vibration may occur. It is preferable to overlap.

As the material used for the air mixing tube 437, other than these, metals such as bronze and stainless steel, glass, and the like may be used. A material in which continuous pores are formed using phase change glass, a ceramic material, or the like may be used.

The porous air mixing pipe section 4 as described above
When 37 is incorporated, it is preferable to prevent the flow of cleaning water from the nozzle into the air mixing pipe portion 437. That is, it is more preferable that the air mixing pipe portion 437 can exhibit the gas-liquid separation function as described above from the viewpoint of preventing the inflow of the washing water. If the gas-liquid separation function is insufficient, an inflow prevention mechanism such as a check valve may be provided in the air conduit for guiding air to the air mixing pipe portion 437, or the air conduit may be slightly suspended during non-cleaning. The inflow may be prevented by maintaining the pressure at a high level.

This fourth embodiment can be modified as follows. In the first modified example, similarly to the above-described third embodiment, the supply pressure of the cleaning water sent to the discharge nozzle 435 is detected by the pressure sensor. If the detected pressure is lower than the pressure P0 at which high-pressure and high-speed cleaning water discharge is not expected even if the cleaning water is discharged from the discharge nozzle at that pressure, specifically, air mixing is performed. . In the first modified example, the pressurizing pump 4 is used only when the supply pressure of the washing water is low.
By driving 40, mixing of air can be achieved, and cleaning water can be discharged with high energy. Therefore, the pressurizing pump 440 may be driven intermittently or temporarily.
Energy can be saved.

The second modification has a drive switch for the pressurizing pump 440. When the drive switch is operated by the user, the pressurizing pump 440 is driven to perform air mixing as described above. In the second modified example, only when the drive switch is operated, the pressurizing pump 440 is driven to mix the air and discharge the washing water with high energy. For this reason, the pressurizing pump 440 may be driven intermittently or temporarily, and energy can be saved.

The third modification is different from the fourth embodiment in that the pressurizing pump 440 is operated in a steady state on the assumption that the flow rate of water supplied to the discharge nozzle 435 is substantially constant. It is characterized in that the air flow rate is adjusted based on the flow rate. FIG. 16 is a main block diagram of the third modification. As shown in the figure, a third modified example includes a flow control valve 442 installed in a downstream pipe of a pressurizing pump 440 and a flow sensor installed in the middle of a pipe of a connecting pipe 137 and detecting a supply water flow rate in the pipe. 444, a water supply valve 445 for opening and closing the conduit of the connecting pipe 137, a pressurizing pump 440 and a flow regulating valve 4.
An electronic control unit 446 for controlling the operation of the control unit 42 and the like, and an operation panel 448 for setting the air mixing ratio η are provided. The electronic control unit 446 is configured as a logical operation circuit centered on a CPU, a ROM, and a RAM.
Pump 440 and flow control valve 4 based on the detected flow rate of
42 is driven and controlled. The operation panel 448 includes a setting switch 450 for setting the air mixing ratio η, and a cleaning switch 452 for starting toilet flushing. in this case,
The setting switch 450 sets the air mixing ratio η to about 1.3 to 4.
The set air mixing ratio η is input to the electronic control unit 446.

In the third modification, air mixing control is performed by the electronic control unit 446 described above. FIG.
It is a flowchart showing this air mixing control. The air mixing control shown in FIG. 17 is started when the cleaning switch 452 of the operation panel 448 is operated, and is repeatedly executed for a time required for flushing the toilet. When the above switch is operated, first, the water supply valve 445 is controlled to open (step S600), and cleaning water is guided from a water supply source (not shown) to the discharge nozzle 435 via the connection pipe 137. Next, the flow rate sensor 444 is scanned to read the supply flow rate (step S610). Thereafter, from the supplied flow rate of the supplied water and the air mixing ratio η set by the setting switch 450, the amount of air to be mixed to calculate the air mixing ratio η is calculated (step S620). The opening of the flow control valve 442 is adjusted by controlling the opening of the flow control valve 442 so that the calculated amount of mixed air (pressurized air) is mixed into the discharge nozzle 435 through the air mixing pipe 437, and the pressurization is performed. The pump 440 is driven (Step S630). When the above-described series of processes is first executed, the toilet flushing through the discharge of the aerated water is started as described above. Therefore, in the following step S640, the elapsed time from when the toilet flushing is started is measured, and it is determined whether or not a predetermined flushing time has elapsed. If the cleaning time has not elapsed, the processing from step S600 is repeated. On the other hand, if the cleaning period has elapsed, the water supply valve 445 and the flow control valve 4
The control of closing the valve 42 and the stop control of the pressurizing pump 440 are performed (step S650), and this routine ends.

According to the third modification for performing the air mixing control described above, even if the water supply flow rate fluctuates due to some cause, for example, an inadvertent pressure drop on the supply source side such as a water pipe, the flow rate fluctuation is not affected. Adjust the mixed air amount accordingly. Therefore, the washing water from the discharge nozzle 435 for generating the flow-amplified washing water for the conveyance of the waste and the flushing of the toilet as described above is in a bubble flow in which air is dispersed and mixed at an air mixing ratio η of 1.3 or more. Can be ejected. For this reason, as in the above-described embodiment and its modifications, regardless of the level of the water supply pressure and the amount of water supply, it is possible to achieve high washing performance and high water saving, and to achieve reliable waste transfer and toilet flushing. it can. In addition, since the air mixing ratio η of 1.3 or more is reliably ensured, it is possible to more reliably improve the cleaning ability and improve the water saving efficiency.

In the third modification, the amount of air to be mixed is adjusted according to the flow rate of the supplied water in order to make the air mixing ratio η 1.3 or more. However, the following modifications can be made. That is, the fourth modification has a flow control valve for adjusting the flow rate of the water supplied from the water supply source, and the pressurized pump 440 supplies the air mixture 436.
And the feedwater flow rate is adjusted so that the air mixing rate η is 1.3 or more. Even in the fourth modification, the cleaning water can be discharged from the discharge nozzle 435 in a state of a bubble flow in which air is dispersed and mixed at an air mixing ratio η of 1.3 or more. The cleaning water discharged from the apparatus can have a large momentum. Therefore, according to the fourth modified example as well, it is possible to achieve high washing performance and high water saving, and it is possible to surely convey filth and wash the toilet.

Next, a fifth modified example will be described. FIG. 18 is an enlarged sectional view of a main part of a toilet according to the fifth modification. As shown in the drawing, the fifth modified example is characterized in that the air mixture 436 is provided in the vicinity of the ejection port of the discharge nozzle 435. That is, the air mixture 436 is fixed to the toilet wall surface 101c in a water-tight manner, and the air mixture 436 is approximately 100 mm from the ejection port of the discharge nozzle 435.
mm. According to the fifth modified example, the cleaning water of the bubble flow in which the air is dispersed and mixed in the air mixing pipe section 437 is quickly discharged from the outlet of the air mixture 436. Therefore, the coalescence of bubbles during reaching the ejection opening of the discharge nozzle 435 can be made difficult to occur, and the washing water can be discharged from the air mixture 436 in a state of a stable bubble flow, which is preferable. Further, the passage distance of the washing water in the state of the bubble flow is shortened, so that the pipeline resistance when the washing water passes can be reduced. Therefore, it is possible to reduce the water pressure necessary for supplying cleaning water such as tap water and the air pressure mixed by the pressurizing pump 440, and to increase the water saving efficiency at low water pressure.

Next, a fifth embodiment will be described. In the fifth embodiment, after air is mixed into the cleaning water discharged from the discharge nozzle 435, the bubble mass is pulverized, and
It is characterized in that washing water having a bubble flow similar to that of the embodiment is obtained.
FIG. 19 is an enlarged sectional view of a main part of the toilet according to the fifth embodiment. FIG. 20 is an explanatory view for explaining an air mixing pipe section 165 in the air mixing body 436 used in the fifth embodiment, and FIGS.
Enlarged view of the aeration part in FIG. 23 to FIG.
FIG. 9 is an explanatory view illustrating a narrowed pipe section 170 provided in a downstream pipe of the air mixing pipe section 165 to pulverize a bubble mass and use the bubble stream as washing water.

As shown in FIG. 19, the air mixing body 436 of the fifth embodiment is configured by incorporating an air mixing pipe section 165 and a constriction pipe section 170 from the side of the connection pipe 137 into the pipe of the discharge nozzle 435. ing. The air mixing tube 165 is
As shown in FIG. 20, an air inlet 167 is provided on the outer wall of the washing water pipe 166. A pressure pump 440 is connected to the air inlet 167 with a flow control valve 442 interposed therebetween. Therefore, the air inlet 16 from the pressurizing pump 440
The air supplied to 7 is mixed with the washing water in the pipeline from the inlet opening 168 in the same manner as in the conventional method. The inlet opening 168 is formed along the flow direction so that shear force is easily transmitted to bubbles without disturbing the flow. At this time, air is mixed through the inlet opening 168 in a volume 1.3 times or more the volume of the supplied washing water,
Since it is merely a mixture from the opening, it is mixed with the washing water in a state of bubbles.

As shown in FIGS. 21 and 22, the inlet opening 168 may be a simple opening or a divided opening. In this case, if the opening is divided as shown in FIG.
This is preferable because bubbles having a smaller diameter can be generated as compared with the first opening.

The stenosis tube portion 170 shown in FIGS.
Has a narrowed portion 171 at a part of the washing water pipe 166 of the air mixing pipe section 165 to reduce the pipe area. Then, at the constricted portion 171, the flow of the washing water passing through the pipeline is disturbed and a shearing force is exerted on the washing water to crush the air bubbles mixed in the washing water. Thereby, the stenosis tube portion 170
In this method, air is dispersed and mixed in the state of fine bubbles in the state of air, and the same air flow as in the fourth embodiment flows at the same speed. Therefore, according to the fifth embodiment as well, the cleaning water is discharged from the discharge nozzle 435 in a state of a bubble flow, and the inlet 121 is discharged as described above.
Since the flow-amplification washing water is poured toward the, the toilet bowl washing power can be increased and further water saving can be achieved, as well as the reliability of the conveyance of filth.

In this case, the stenosis tube portion 170 in FIG. 23 has a smaller opening area at the stenosis portion than that in FIG. Therefore, in the constriction tube portion 170 in FIG. 23, the cleaning water passage speed is increased, so that the bubble crushing effect by the shearing force is large, and the cleaning water in the bubble flow including a smaller bubble diameter can be discharged from the discharge nozzle 435.

The stenotic tube section 170 shown in FIGS. 25 and 26 has a plurality of stenotic portions 171 so as to divide the channel area. FIG.
The stenotic tube portion 170 of FIG. 5 and the stenotic tube portion 170 of FIG. 26 have substantially the same sum of the opening areas, so that the washing water passage speeds are substantially equal. However, the stenosis tube portion 170 in FIG.
Has a smaller hole area per hole than that of FIG. Therefore, the stenosis tube portion 17 of FIG.
In the case of 0, the effect of the shear by the wall surface is large, and the cleaning water containing a smaller bubble diameter can be discharged from the discharge nozzle 435. Although the shape of the stenosis tube is circular, it may be polygonal.

The air mixing tube 165 shown in FIG.
Can be an air mixing pipe section 165 shown in FIGS. 27 and 28. The air mixing pipe section 165 shown in FIG.
It has a plurality of inlet openings 168 in the circumferential direction of the conduit. FIG.
8 has a slit-like inlet opening 168. These are convenient for large aeration. In addition, in the case of an elongated continuous slit as shown in FIG. 28 or by dividing in the circumferential direction, the aspect ratio (aspect ratio)
In the case of a large air outlet, the opening area of the air discharge port that affects the shearing force between water and air is determined by the length L, and the circumferential length is not much affected.

Next, a modification of the fifth embodiment will be described. FIG. 29 is an enlarged cross-sectional view of a main part of a toilet according to this modification. As shown in FIG.
As in the fifth modification of the embodiment, the present embodiment is characterized in that the air mixture 436 is provided in the vicinity of the ejection port of the discharge nozzle 435. In other words, the air mixture 436 is
1c in a watertight manner, and the narrowed portion 171 of the narrowed tube portion 170 in the air mixture 436 is
The distance from the 35 nozzles was about 100 mm.
According to this modified example, the washing water, which is a bubble flow in which air is dispersed and mixed through the air mixing in the air mixing tube portion 165 and the air bubble dispersion in the constriction tube portion 170, is quickly mixed with the air mixture. It is discharged from the spout 436. Therefore, according to this modification, the same effect as that of the fifth modification can be obtained. Note that the distance of the constricted portion 171 from the ejection port of the discharge nozzle 435 is not limited to the above-described one, and it is only necessary that the bubble mass pulverization by the constricted portion 171 and the dispersion and mixing of air downstream thereof are performed appropriately. Point 1
71 may be separated from the ejection port by 100 mm or more. Also,
It may be closer than this.

Although the embodiments of the present invention have been described above,
The present invention is not limited to the above-described examples and embodiments at all, and it goes without saying that the present invention can be implemented in various modes without departing from the gist of the present invention.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a toilet bowl 100 according to a first embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a toilet bowl 400 according to a second embodiment.

FIG. 3 is a flowchart illustrating a toilet flushing process performed in a third embodiment.

FIG. 4 is an enlarged sectional view of a main part of a fourth embodiment.

FIG. 5 is a schematic diagram schematically showing a concept of a bubble pump equivalent to an air mixture 436 provided in a discharge nozzle 435 of a fourth embodiment.

FIGS. 6A and 6B are explanatory diagrams for explaining cleaning water of a bubble flow obtained from an air mixture 436 in comparison with a flow aspect obtained by a conventional air mixing method, and FIG. (B), (c) and (d) show a washing water flow in which a gas phase mixed in the washing water exists as a continuous phase, (b) shows a washing water flow of a slag flow, and (c) shows a washing water flow of a slag flow. () Shows an annular washing water flow, and (d) shows a spray washing water flow.

FIG. 7 is a read image of a photograph taken of the state of the flow of the washing water ejected from the bubble pump 80.

FIG. 8 shows an air mixing pipe section 437 of the air mixing body 436;
That is, it is a graph showing the relationship between the bubble diameter immediately after generation and the flow rate of the washing water for the bubbles dispersed and mixed by the bubble dispersing element 83 of the bubble pump of FIG.

FIG. 9 is a graph showing the relationship between the residence time in a pipe and the growth of bubbles in the cleaning water of the bubble flow obtained in the air mixing tube section 437 (bubble dispersion 83).

FIG. 10 shows that the pipe length of the jet port of the bubble pump 80 is about 100.
9 is a graph showing the relationship between the pipe diameter and the washing water residence time of the passage pipe when the washing water passage pipe (discharge nozzle 435) of mm is connected.

FIG. 11 is a graph showing the relationship between the washing water load spouted from the bubble pump 80 and the air mixing rate.

FIG. 12 is a graph showing the total energy efficiency Et / (Ew + Ea) obtained by dividing the output energy Et of the bubble pump 80 by all the input energies (Ew + Ea), and the relationship between the energy amplification effect Et / Ew and the air mixing ratio η. is there.

FIG. 13 is a read image of an electron micrograph of the surface of an air mixing tube section 437 formed by heating and molding ultra-high molecular weight polyethylene substantially spherical particles.

FIG. 14 is a read image of an electron micrograph of the surface of an air mixing tube section 437 formed from substantially spherical particles of acrylic resin.

FIG. 15 is a schematic view showing an example of an air mixing tube section 437 formed by supporting a nylon mesh.

FIG. 16 is a main block diagram showing a third modification of the fourth embodiment.

FIG. 17 is a flowchart showing air mixing control executed in the third modified example.

FIG. 18 is an enlarged sectional view of a main part of a toilet bowl according to a fifth modification.

FIG. 19 is an enlarged sectional view of a main part of a toilet according to a fifth embodiment.

FIG. 20 is an explanatory diagram illustrating an air mixing pipe section 165 in an air mixing body 436 used in the fifth embodiment.

FIG. 21 is an enlarged view of an air mixing portion in the air mixing pipe section 165.

FIG. 22 is an enlarged view of an air-mixed portion in another air mixing pipe section.

FIG. 23 is a stenotic tube section 170 provided in a downstream pipe of an air mixing pipe section 165 to pulverize a bubble mass and to use the bubble stream as washing water.
FIG.

FIG. 24 is an explanatory view similarly explaining another stenosis tube section 170.

FIG. 25 is an explanatory view illustrating another stenosis tube section 170.

FIG. 26 is an explanatory view illustrating still another stenosis tube section 170.

FIG. 27 is an explanatory diagram illustrating another air mixing pipe section 165.

FIG. 28 is an explanatory diagram for explaining another air mixing pipe section 165.

FIG. 29 is an enlarged sectional view of a main part of a toilet according to a modification of the fifth embodiment.

[Explanation of symbols]

 35: Discharge nozzle (first discharge nozzle) 35C: Discharge nozzle (second discharge nozzle) 80: Bubble pump 81: Air mixing chamber 82: Air chamber 83: Bubble dispersion 84: Cleaning water pipe 85: Air introduction pipe Reference Signs List 100 toilet bowl 101 ball part 101a toilet body 101b partition wall 101c toilet wall 102 drain trap 103 water rim 104 wash water storage part 105 water supply valve 105a introduction pipe 106 jet discharge port 112 dirt Falling recess 121 ... Inlet 122 ... Ascending pipe 123 ... Downcoming pipe 125 ... Toilet drain port 127 ... Weir section 132 ... Rim water outlet 137 ... Connecting pipe 137C ... Connecting pipe 141 ... Communication hole 161 ... Zet water conduit 165 ... Air mixing Pipe part 166 ... Washing water pipe line 167 ... Air introduction port 168 ... Introduction port opening 170 ... Stenosis pipe part 171 ... Stenosis part 37 ... Air nozzle 374 ... Compressor 376 ... Controller 378 ... Control panel 400 ... Toilet bowl 402 ... Stopcock 404 ... Rim side connection pipe 405 ... Check valve 406 ... Jet side connection pipe 408 ... Rim valve 410 ... Pressure tank 412 ... Control Valve 414 ... Jet valve (first jet valve) 415 ... Bypass pipe 417 ... Jet valve (second jet valve) 435 ... Discharge nozzle 436 ... Air mixture 437 ... Air mixing pipe section 439 ... Closed chamber 440 ... Pressure pump 442 ... Flow control valve 444 ... Flow sensor 445 ... Water supply valve 446 ... Electronic control device 448 ... Operation panel 450 ... Setting switch 452 ... Wash switch

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masaki Kitamura 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture Totoki Equipment Co., Ltd. (72) Yumiko Kataoka 2 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka 1-1-1 Toto Kiki Co., Ltd. (72) Inventor Kiyoshi Fujino 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture Toto Kiki Co., Ltd. (72) Noboru Niihara Kokura, Kitakyushu-shi, Fukuoka (1-2) Inventor Takahiro Ohashi 2-1-1 Nakajima, Kita-ku Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture Totoki Equipment Co., Ltd. (72) Inventor Hisato Haraga 2-1, 1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka

Claims (19)

[Claims] 1. A toilet bowl for transporting filth in a bowl portion of a toilet bowl to the outside of the toilet, comprising: a discharge member configured to discharge cleaning water for transporting the filth; and Amplifying means for amplifying the flow rate of the washing water used for transporting the contaminants in the ball portion and guiding the washing water to the water discharging member, wherein the amplifying means uses air supplied from an air source as a driving fluid, A jet pump that mixes and ejects both fluids with the cleaning water prepared for the conveyance of the waste of the ball portion as a driven fluid,
The jet pump having a driving nozzle for ejecting air supplied from the air source, and a throat for forming a passage for the two fluids corresponding to the driving nozzle and guiding the two fluids to the discharge member. A toilet bowl comprising: 2. A toilet bowl for transporting filth in a bowl portion of a toilet bowl to the outside of the toilet, comprising: a discharge member configured to discharge cleaning water for transporting the filth; and Amplifying means for amplifying the flow rate of the washing water used for transporting the dirt in the ball portion and guiding the washing water to the water discharging member; and a pressurizing means for pressurizing water supplied from a water supply source, The means is a jet pump that mixes and ejects both fluids by using pressurized water pressurized by the pressurizing means as a driving fluid and cleaning water prepared for conveying dirt in the ball portion as a driven fluid. A toilet bowl comprising: a jet nozzle having a driving nozzle for ejecting the fluid and a throat for forming a passage for the two fluids corresponding to the driving nozzle and guiding the two fluids to the discharge member. 3. A toilet bowl for transporting filth in a bowl portion of a toilet bowl to the outside of the toilet, comprising: a discharge member configured to discharge cleaning water for transporting the filth; and Amplifying means for amplifying the flow rate of the washing water used for transporting the dirt in the ball portion and guiding the washing water to the water discharging member, and pressurizing means for increasing the pressure of the water supplied from the water supply source at a low water supply pressure. The amplifying means is a jet pump that mixes and ejects both fluids using the supplied water as a driving fluid and the cleaning water prepared for conveying dirt in the ball portion as a driven fluid. A jet nozzle having a throat that forms a passage for the two fluids corresponding to the drive nozzles and guides the two fluids to the discharge member, the jet pump comprising: Said A first driving nozzle for directly ejecting the water supplied from the water source, a second driving nozzle for ejecting the water pressurized by the pressurizing means, and a water supply source for the first and second driving nozzles. A selecting means for selecting according to the water supply pressure of the toilet. 4. A toilet bowl for transporting filth in a bowl portion of a toilet bowl to the outside of the toilet, comprising: a discharge member configured to discharge cleaning water for transporting the filth; and Amplifying means for amplifying the flow rate of the washing water used for transporting the dirt in the ball portion and guiding the washing water to the water discharging member; and mixing means for mixing pressurized air with water supplied from a water supply source. The amplifying means mixes and ejects the two fluids using the pressurized air mixed water mixed with the pressurized air by the mixing means as a driving fluid and the washing water prepared for conveying the dirt of the ball portion as a driven fluid. A jet nozzle that jets the pressurized air mixed water, and a throat that forms a passage for the two fluids corresponding to the drive nozzles and guides the two fluids to the discharge member. The jet Toilet, characterized in that it comprises a pump. 5. The toilet according to claim 4, wherein the mixing means is driven at a low supply pressure to mix the pressurized air. 6. The toilet according to claim 4, wherein the mixing means has a start switch operated by a user, and is driven by operating the start switch to mix the pressurized air. toilet bowl. 7. The toilet according to claim 4, wherein the mixing means includes: a water supply pipe extending from the water supply source to the drive nozzle of the jet pump; and an air mixing unit provided in the water supply pipe. Air mixing means for mixing air into the water in the water supply pipe from above, and making the flow of the water mixed with the air from the aeration section into a bubble flow in which air is dispersed and mixed in the water; and a water supply flow rate Qw in the bubble flow And a mixing ratio adjusting means for adjusting a mixing ratio of water and air in the bubble flow such that an air mixing ratio η defined by a value Qa / Qw of a ratio between the air flow rate Qa and the air flow rate Qa is 1.3 or more. toilet bowl. 8. The toilet according to claim 7, wherein the mixing ratio adjusting means controls the bubble flow means to control the amount of air mixed in and adjusts the air flow rate Qa. Means for controlling a supply amount of water supplied to the water supply line, and a water supply flow rate Qw
A toilet having at least one of the first and second adjusting means of the second adjusting means for adjusting the toilet. 9. The toilet according to claim 7, wherein the mixing ratio adjusting means controls the bubble flow means based on a supply amount of water supplied to the water supply pipe to mix air. A toilet having means for controlling the volume and adjusting the air flow Qa. 10. The toilet according to claim 7, wherein the air mixing unit has a fine bubble mixing unit that mixes fine bubbles into the water in the water supply conduit. 11. The toilet according to claim 10, wherein the fine bubble supply means has an average diameter of about 100 μm to 1 μm.
A toilet bowl in which fine air bubbles of 000 μm are mixed with water in the water supply conduit. 12. The toilet according to claim 10, wherein the microbubble supply means has a multiplicity of independent apertures on a surface of the water supply pipe which contacts the water. 13. The toilet according to claim 12, wherein the independent openings of the fine bubble supply means have a regular opening arrangement. 14. The toilet according to claim 10, wherein the air mixing part forms a part of the water supply pipe. 15. The toilet according to claim 14, wherein the aeration part is formed of a porous material. 16. The toilet according to claim 14, wherein the aeration unit has a substantially mesh structure over a region of the conduit that contacts the cleaning water. 17. The toilet according to claim 10, wherein the air mixing section is provided near an ejection port of the driving nozzle. 18. The toilet according to claim 7, wherein the bubble-flowing means crushes a bubble lump included in a flow of water in the water supply pipe in a pipe downstream of the aeration section. A toilet having bubble crushing means for changing the flow of water into a bubble flow in which crushed bubbles are dispersed and mixed in water. 19. The toilet according to claim 18, wherein the bubble crushing means is provided near an ejection port of the driving nozzle.