KR20010022937A - Cleaning water discharge apparatus - Google Patents

Abstract

The washing water discharge device includes a washing water discharge means, a water supply means for supplying the washing water to the washing water discharge means, and a bubble mixing means for mixing bubbles in the washing water flowing through the washing water flow path. Bubbles dispersed in the container are discharged.

Description

Washing water discharge device {CLEANING WATER DISCHARGE APPARATUS}

In Japanese Patent Laid-Open No. 56-70338 and Japanese Patent Laid-Open No. 5-33377, air bubbles are mixed into the washing water discharge means, the water supply means for supplying the washing water to the washing water discharge means, and the washing water flowing through the washing water flow path. A human body washing apparatus is disclosed, which includes bubble mixing means and discharges washing water containing bubbles to increase the washing power of the washing water or to impart a soft washing feeling.

Japanese Patent Laid-Open No. Hei 10-18391 discloses a human body washing apparatus that incorporates a large amount of air into washing water to increase the speed of ejecting the washing water and to drastically save water.

In order to discharge the washing water containing bubbles to increase the cleaning power or to impart a soft washing feeling, it is necessary to actually contain a large amount of bubbles in the classification of the washing water reaching the surface to be cleaned. The techniques disclosed in Japanese Patent Application Laid-open No. 56-70338 and Japanese Patent Laid-Open No. 5-33377 did not guarantee that a large amount of bubbles were actually included in the classification of the washing water reaching the surface to be cleaned.

In order to realize significant saving water, the washing water must be reliably increased by the mixing of air. The technique disclosed in Japanese Patent Application Laid-open No. Hei 10-18391 does not guarantee that the washing water is reliably increased by the incorporation of air, and therefore, does not guarantee the realization of significant water saving.

The present invention relates to a washing water discharge device.

1 (a) to 1 (d) are diagrams showing a flow mode of gas and liquid two phases;

Fig. 1 (a) shows bubbles, Fig. 1 (b) shows slags, Fig. 1 (c) shows bubbles and Fig. 1 (d) shows cyclic sprays.

2 is a view showing a state in which classification impinges on a surface to be cleaned.

Fig. 3 is a diagram showing a relationship between pressure and gas-liquid ratio generated when bubbles flow on the surface to be cleaned.

Fig. 4 is a diagram showing the relationship between the amount of washing water and the gas-liquid ratio when the pressure generated when the bubbles collide with the surface to be cleaned is kept constant.

5 is a configuration diagram of a washing water discharge device according to the first embodiment of the present invention.

6 is a view showing a discharge state of bubbles.

7 is an enlarged electron microscope view of the surface of a heated formed body of approximately spherical particles of ultra high molecular weight polyethylene.

8 is an electron microscope enlarged view of the surface of a heated formed body of approximately spherical particles of an acrylic resin.

9 is a configuration diagram of a washing water discharge device according to a second embodiment of the present invention.

10 (a) to 10 (c) are views showing an example of an automatic removal device of dirt attached to the inner surface of the bubble generating member, and FIG. 10 (a) is an overall configuration diagram, FIGS. 10 (b) and 10 (b). 10 (c) is an enlarged view of the portion enclosed by the broken line in FIG. 10 (a).

Fig. 11 is a block diagram of a human body washing apparatus in which the washing water discharge apparatus according to the third embodiment of the present invention is inserted.

12 is a plan view of the washing water discharge nozzle of the washing water discharge device according to the third embodiment of the present invention.

FIG. 13 is a cross-sectional view taken along the line A-A 'of FIG. 12;

14 is a diagram showing a relationship between bubble diameter and water flow velocity in bubble generation.

Fig. 15 is a diagram showing a relationship between bubble growth degree and bubble residence time.

Fig. 16 is a sectional view of the washing water discharge nozzle included in the washing water discharge device according to the fourth embodiment of the present invention.

Fig. 17 is a sectional view of a flow path switching device of the washing water discharge device according to the fourth embodiment of the present invention.

Fig. 18 is a graph showing the relationship between the air mixing rate and the energy amplification rate of the bubble pump, and the relationship between the air mixing rate and the total efficiency.

19 is a diagram illustrating a modification of the bubble generating member.

The figure which shows the result of the calcium carbonate precipitation suppression effect confirmation test of a surface treating agent.

The structural diagram of the test apparatus used for the calcium carbonate precipitation suppression effect confirmation test of a surface treating agent.

The figure which shows the result of the confirmation test of the influence of the water flow form on the precipitation of calcium carbonate.

Fig. 23 shows the results of the confirmation test of the influence of the water passage form on the precipitation of calcium carbonate.

The figure which shows the result of the calcium carbonate precipitation suppression effect confirmation test of a surface treating agent.

The figure which shows the result of the calcium carbonate precipitation suppression effect confirmation test of a surface treating agent.

The figure which shows the result of the calcium carbonate precipitation suppression effect confirmation test of a surface treating agent.

The figure which shows the result of the calcium carbonate precipitation suppression effect confirmation test of a surface treating agent.

The figure which shows the result of the calcium carbonate precipitation suppression effect confirmation test of a surface treating agent.

The figure which shows the result of the calcium carbonate precipitation suppression effect confirmation test of a surface treating agent.

30 is a configuration diagram of a hot water supply device in which the washing water discharge device according to the first embodiment of the present invention is inserted.

FIG. 31A is a configuration diagram of a shower device in which the washing water discharge device according to the first embodiment of the present invention is inserted, and FIG. 31B is a sectional view of the bubble generating member.

32 is a top view of the hair washing apparatus with the washing water discharging device inserted according to the first embodiment of the present invention.

33 is A-A embodiment of FIG.

FIG. 34 is a B-B embodiment of FIG. 32;

Fig. 35 is a configuration diagram of a power receiving mechanism in which the washing water discharge device according to the first embodiment of the present invention is inserted.

36 is a top view of the power receiving mechanism of FIG. 35;

FIG. 37 is a side view of the power receiving mechanism of FIG. 35; FIG.

38 is a block diagram of a washing water discharge device including the bubble crushing device.

39 (a), 39 (b) and 39 (c) are cross-sectional views of the bubble crushing apparatus included in the washing water discharge device of FIG.

This invention is made | formed in view of the said subject, Comprising: It aims at providing the wash water discharge apparatus which can classify the wash water containing a large amount of foam | bubble to a to-be-cleaned surface, and can realize a significant water saving.

In order to solve the above problems, the present invention includes a washing water discharge means, a water supply means for supplying the washing water to the washing water discharge means, and bubble mixing means for mixing bubbles in the washing water flowing through the washing water flow path, Provided is a washing water discharge device characterized by discharging bubbles in which a large amount of fine bubbles are dispersed in the washing water.

As a result of intensive research, the inventor of the present invention optimizes the flow mode of the gas and liquid two-phase flows through the washing water flow path, so that a large amount of bubbles are actually included in the classification of the washing water reaching the surface to be cleaned. It was found that the washing water can be reliably increased by incorporation of air. Hereinafter, the knowledge obtained by the inventor of the present invention will be described in detail.

(1) Flow mode of gas and liquid two phases

Regarding the gas-liquid two-phase flow through the washing water flow path, the following facts exist.

(1) By simply incorporating a large amount of air into the washing water, the flow mode of the gas and liquid two-phase flows through the washing water flow path is characterized by the columnar air layer and the columnar liquid layer as shown in FIG. Alternately continuous slags, foams in which the air and liquid layers of the slag collapsed as shown in FIG. 1 (c) are collapsed, and mist-like water drops as shown in FIG. 1 (d). It is easy to become the cyclic | annular spray stream which the layer of wash water surrounds the circumference | surroundings of the columnar air layer to contain.

When slag, foam and ring spray are discharged from the washing water nozzle, the column air layer and the column air layer containing the collapsed column air and the columnar air layer containing the mist droplets are immediately dispersed into the atmosphere. Only a few bubbles remain in the washing water colliding with the surface to be washed, and the washing power of the washing water is lost, or the soft washing feeling is lost.

In slag, foam, and annular spray streams, the columnar air layer extends substantially continuously to the washing water outlet at the end of the washing water flow path, so that most of the air mixed in the washing water is not mixed with the washing water. Is discharged through the air flow path. As a result, even if a large amount of air is mixed into the washing water, the air only passes through the columnar air flow path at high speed, and it is impossible to significantly increase the flow rate of the washing water, and it is impossible to realize a significant water saving.

(2) When a large amount of fine bubbles are dispersed and mixed in the washing water, the flow mode of the gas and liquid two-phase flows through the washing water flow path is a bubble in which a large amount of fine bubbles are dispersed in the washing water as shown in FIG. do.

When bubbles are discharged from the washing water nozzle, bubbles dispersed in the washing water are not dispersed in the air, so a large amount of bubbles remain in the washing water colliding with the surface to be cleaned, and the washing power of the washing water is increased, or the feeling of soft washing is increased. Is obtained.

In the air bubbles, the air mixed in the washing water moves in unison with the washing water mixed with the washing water, so that the flow rate of the fluid flowing through the washing water flow path increases only by the flow rate of the mixed air, thereby increasing the washing water flow rate. . Therefore, if the flow mode of the gas-liquid two-phase flow in the washing water flow path is bubble, the air can be mixed in a large amount in the washing water to greatly increase the flow rate of the washing water, and a great saving water can be realized.

(2) Cleansing power of bubble flow

The theoretical considerations are described below with respect to the cleaning power for classifying bubbles.

The average value Ps of the pressure generated at the surface to be cleaned when the classification of the washing water collides with the surface to be cleaned is represented by Equation (1).

Ps = △ W / S _S

= ρ (S ₁ / S _S ) V ₁ ²

In the above equation,? W is a change in the momentum of the classification of the washing water due to the collision with the surface to be cleaned. ρ is the density of the washing water. As shown in Fig. 2, S ₁ is the cross-sectional area of the jet of the washing water, S _S is the surface to be cleaned, and V ₁ is the flow rate of the jet of the washing water.

In Equation 1, (S ₁ / S _S ) can be considered to be approximately constant as long as the kind, temperature, S _1, etc. of the washing water do not change extremely. Therefore, it is possible to transform Equation 1 into Equation 2.

Ps = ρ (S ₁ / S _S ) V ₁ ²

≒ CρV _l ²

In the above equation, C = S ₁ / S _S , which is approximately a constant value.

When the classification of the washing water is the classification of bubbles, the density ρ of the washing water is represented by the following equation.

ρ = (ρ _G Q _G + ρ _L Q _L ) / (Q _G + Q _L )

= (ρ _G η + ρ _L ) / (1 + η)

≒ ρ _L / (1 + η)

In the above equation, ρ _G is the density of the gas constituting the bubble, ρ _L is the density of the washing water not containing bubbles, Q _G is the volume flow rate of the gas constituting the bubbles, Q _L is not containing bubbles The volume flow rate of the washing water, η is Q _G / Q _L , and is a ratio of the volume flow rate of the gas constituting the bubble to the volume flow rate of the washing water not containing bubbles, that is, the gas and liquid ratio. Where ρ _G 《ρ _L. Assuming that spherical bubbles of the same diameter are filled in the most dense cubic lattice, the theoretical maximum of the gas-liquid ratio η is about 2.85. If the bubble is a polyhedron that can be filled more densely than a sphere, the gas-liquid ratio (η) becomes larger, but when the gas-liquid ratio becomes excessive, the bubbles coalesce to become large diameters and stop in the classification. Since there is a possibility of becoming impossible, the gas-liquid ratio η cannot be excessively increased. Therefore, it is thought that ρ _G η can be ignored for ρ _L in the intermediate expression of the above equation. As a result, the following equation (3) can be obtained from the equation in the middle of the equation.

Based on the equations (2) and (3), Ps in the case where the bubble classification collides with the surface to be cleaned is obtained.

Substitute Equation 3 into Equation 2.

Ps = CρV ₁ ² (Equation 2)

≒ Cρ _L V ₁ ² / (1 + η)

In the above equation

V ₁ = (Q _G + Q _L ) / S ₁

= (ηQ _L + Q _L ) / S ₁

= (η + 1) Q _L / S ₁

If you substitute

Ps ≒ Cρ _L V ₁ ² / (1 + η)

≒ Cρ _L (1 + η) (Q _L / S ₁ ) ²

According to Equation 5, if the flow rate Q _L of the washing water containing no bubbles is constant, the more the gas-liquid ratio η increases, that is, the larger the gas mixing amount, the more the classification of bubbles will collide with the surface to be cleaned. It turns out that the average pressure Ps which generate | occur | produces in a to-be-cleaned surface at the time increases, and also the washing power increases.

It is assumed that Q _L is constant, and Fig. 3 shows ξ = Ps (η) / Ps (η = 0) obtained from the equation (5). Fig. 3 shows the correlation between ξ and η obtained in an experiment conducted using tap water under Q _L constant conditions. In Fig. 3, it can be seen that the correlation between ξ and η obtained in Equation 5 and the correlation between ξ and η obtained in the experiment are in good agreement. It can be seen from FIG. 3 that the cleaning power for classifying the bubbles increases with the increase of the gas and liquid ratio.

When Ps is kept constant in Equation 5, it can be seen that by increasing the gas / liquid ratio η, the flow rate Q _L of the washing water containing no bubbles is reduced, that is, saving water is achieved. . As can be seen from Equation 4, when the gas-liquid ratio η increases, that is, when the gas mixing amount increases, the flow rate V ₁ of the fractionation of the washing water increases, so the flow rate of the washing water Q _L Even if the) is reduced, the momentum of the classification of the washing water is kept constant, and the change in the momentum of the classification of the washing water due to the collision with the surface to be washed is kept constant, and as a result, Ps is kept constant.

It is assumed that Ps is constant, and φ = Q _L (η) / Q _L (η = 0) obtained from Equation 5 is shown in FIG. 4. In FIG. 4, the correlation between (phi) and (eta) obtained by the experiment performed using tap water on Ps constant conditions is shown. It can be seen from FIG. 4 that the correlation between φ obtained from the equation (5) and η coincides well with the correlation obtained by the experiment. In the case where Ps is kept constant in FIG. 4, it can be seen experimentally that the flow rate Q _L of the washing water containing no bubbles is reduced by increasing the gas / liquid ratio η.

The present invention is based on the above findings, and by using the gas-liquid two-phase flow flowing in the washing water flow path as a bubble, the classification of the washing water containing a large amount of bubbles reaches the surface to be cleaned, and a significant water saving is realized. will be.

In the present invention, the washing water discharge means, the water supply means for supplying the washing water to the washing water discharge means, and a large amount of fine bubbles are generated while blocking the coalescing of the bubbles, and dispersed in the washing water flowing through the washing water flow path. It is provided with the bubble mixing means to mix, and provides the washing | cleaning water discharge apparatus characterized by discharging the bubble which disperse | distributes a large amount of fine bubbles in washing water.

In addition, in the present invention, the washing water discharge means, the water supply means for supplying the washing water to the washing water discharge means, and a large amount of fine bubbles are generated while blocking the coalescing of the bubbles, and are substantially uniform in the washing water flowing through the washing water flow path. It is provided with a bubble mixing means for dispersing and mixing the same, and discharges bubbles in which a large amount of fine bubbles are dispersed substantially uniformly in the washing water.

In order to make the gas-liquid two-phase stream which flows through a washing water flow path into a bubble flow, it is necessary to mix a large amount of fine bubbles in the washing water which flows through a washing water flow path. In order to mix a large amount of fine bubbles in the washing water flowing through the washing water flow path, it is necessary to generate a large amount of fine bubbles. When a large amount of fine bubbles are generated within a limited region, bubbles are coalesced and largely cured when the fine bubbles are generated, and large bubbles are mixed in the washing water. When large diameter bubbles are mixed in the washing water in large quantities, the large diameter bubbles are small, easy to deform, and easy to coalesce, and thus they are more coalesced, so that the flow mode of the gas and liquid two-phase flow is slag, foam, and annular. It is easy to become a spray flow. Therefore, in order to obtain bubbles in which a large amount of fine bubbles are dispersed in the washing water, coalescence of the bubbles must be prevented at the time of generating the fine bubbles. In addition, the generated fine bubbles are dispersed in the washing water flowing through the washing water flow path, and more preferably, it is necessary to disperse and mix it approximately uniformly. This is because bubbles are dispersed, and more preferably, they are substantially uniformly dispersed, thereby preventing the coalescence of bubbles mixed in the washing water and preventing the occurrence of slag, bubbles, and cyclic sprays.

In the present invention, there is provided a washing water discharge means, a water supply means for supplying the washing water to the washing water discharge means, and bubble mixing means for generating bubbles and mixing the bubbles in the washing water flowing through the washing water flow path. When the energy of the washing water in the upstream region immediately near the bubble mixing portion of the flow passage is E _W and the energy of the washing water in the downstream region immediately near the bubble mixing portion is E _t , E _W <E _t . A washing water discharge device is provided.

When a large amount of fine bubbles are produced and dispersion of fine bubbles is simultaneously carried out in the washing water flowing through the washing water flow path, the washing water is increased immediately after mixing of the bubbles, and the energy of the washing water increases. That is, by simultaneously producing, dispersing and mixing a large amount of fine bubbles, the mixed fine bubbles function as a bubble pump. As a result, E _W <E _t .

In the present invention, the washing water discharge means, the water supply means for supplying the washing water to the washing water discharge means, the bubble mixing means for mixing the bubbles into the washing water flowing through the washing water flow path, and the mixed bubbles as fine bubbles Provided is a bubble crushing means for crushing, and discharges the bubbles in which a large amount of fine bubbles are dispersed in the washing water.

Instead of generating and mixing the fine bubbles, even if the bubbles are broken into fine bubbles after the mixing of the bubbles, the gas and liquid two-phase flows flowing through the washing water flow path can be used as bubbles, and the bubbles can be discharged.

In a preferable aspect of the present invention, the washing water discharge device includes forced air supply means for forcibly supplying gas to the bubble mixing means.

By forcibly supplying gas to the bubble mixing means, a large amount of bubbles can be mixed into the washing water.

In a preferable embodiment of the present invention, the average diameter of the fine bubbles mixed in the washing water is 100 µm to 100 µm.

Fine bubbles having an average diameter of 100 mu m to 100 mu m are difficult to coalesce because the rigidity hardly deforms. Stable bubbles can be obtained by mixing fine bubbles having an average diameter of 100 탆 to 100 탆 in washing water.

In the case where the washing water discharge device according to the present invention is attached to a human body washing device, in consideration of piping dimensions, nozzle dimensions, and the like, the average diameter of the bubbles in the bubbles is such that the bubbles flow through the washing water flow path without any problems. It is preferable to set it as 100 micrometers or less. On the other hand, it is technically difficult to generate excessively fine bubbles. Taking these into consideration, it is preferable that the average diameter of the bubble in the bubble discharged from the washing | cleaning water discharge apparatus mounted in a human body washing | cleaning apparatus is 100 micrometers-100 micrometers.

In a preferable embodiment of the present invention, the ratio of the volume flow rate of the gas mixed into the washing water and the volume flow rate of the washing water is 0.5 to 4.0.

In the case of forcibly supplying gas to the bubble mixing means, the theoretical maximum value of the gas-liquid ratio is about 2.85, assuming that bubbles of the same diameter are filled in the most dense cubic lattice. If the bubble is a polyhedron that can be filled more densely than a sphere, the gas-liquid ratio is further increased. However, if the gas-liquid ratio is excessive, there is a possibility that the bubbles mixed in the washing water coalesce, and the gas-liquid two-phase flow forms slag, foam, and cyclic spray flow. On the other hand, if the gas / liquid ratio is too small, the cleaning power of the jet cannot be increased. In view of these, it is reasonable to set the ratio of the volume flow rate of the gas mixed into the washing water and the volume flow rate of the washing water to 0.5 to 4.0.

In a preferred embodiment of the present invention, the cross-sectional area of the downstream region is set to be larger than the projected area of a sphere having a diameter equal to the average diameter of the mixed bubbles than the bubble mixing portion and the bubble mixing portion of the washing water flow path, and the bubbles of the washing water flow path The cross-sectional area of the downstream region is set to be larger than the cross-sectional area of the bubble mixing portion than the mixing portion.

As a result of intensive research, the inventor of the present invention finely bubbles and disperses gas into the washing water flowing through the flow path in the pipe, and then, while the microbubbles are mixed and dispersed in a large amount, the washing water is discharged from the pipe. In order to reach the to-be-cleaned surface, it turned out that the flow path through which washing water flows needs to satisfy the following conditions.

(1) The cross-sectional area of the downstream region is greater than the projected area of a sphere having a diameter equal to the average diameter obtained from the average volume of the mixed bubbles, than the bubble mixing portion and the bubble mixing portion of the flow path.

If the cross-sectional area of the downstream region than the bubble mixing portion and the bubble mixing portion of the flow passage is less than or equal to the projection area of a sphere having a diameter equal to the average diameter obtained from the average volume of the mixing bubbles, the flow mode of gas-liquid two-phase flow through the flow passage is It consists of slag and foam. If the cross-sectional area of the downstream region than the bubble mixing portion and the bubble mixing portion of the flow path is larger than the projected area of a sphere having a diameter equal to the average diameter obtained from the average volume of the mixing bubbles, the flow mode of gas-liquid two-phase flow through the flow path is bubble Ryu.

② The cross-sectional area of the downstream area is greater than the cross-sectional area of the bubble mixing part than the bubble mixing part of the flow path.

If there is a portion whose cross-sectional area is less than the cross-sectional area of the bubble mixing portion in the downstream region than the bubble mixing portion of the flow passage, the flow mode of the gas-liquid two-phase flow through the flow passage downstream from the portion becomes a cyclic spray flow. At the site where the cross-sectional area is less than the cross-sectional area of the bubble mixing portion, bubbles dispersed in the washing water are gathered at the center of the flow, and a large amount of bubbles are coalesced to form a columnar gas layer at the center of the flow. When the cross-sectional area of the downstream region is set to be equal to or larger than the cross-sectional area of the bubble mixing portion than the bubble mixing portion of the flow passage, the flow mode of the gas-liquid two-phase flow through the flow passage becomes bubble flow.

In a preferred embodiment of the present invention, the downstream region extends in a substantially straight line than the bubble mixing portion of the washing water flow path.

If the downstream region is curved than the bubble mixing portion of the washing water flow path, when the bubbles flow through the curved portion, the dispersed fine bubbles are subjected to centrifugal force to coalesce, and the bubbles may change into slag and foam. . When the downstream region extends in a substantially straight line than the bubble mixing portion of the washing water flow path, the aggregate of fine bubbles due to centrifugal force does not occur and the bubbles are maintained.

In a preferable embodiment of the present invention, bubble mixing means is provided in the washing water discharge means.

In a preferable embodiment of the present invention, bubble mixing means is provided near the washing water discharge port of the washing water discharge means.

When the bubble mixing means is provided in the washing water discharge means, more preferably, when the bubble mixing means is provided near the washing water discharge port, the time for the bubbles to stay in the washing water flow path is shortened, and the possibility of coalescence of fine bubbles decreases, thereby The likelihood of the flow being maintained increases.

In a preferred embodiment of the present invention, bubble mixing means is provided in the vicinity of the washing water discharge port of the washing water discharge means, and a portion near the washing water discharge port of the washing water discharge means is detachably attached to another portion.

In the case where the bubble mixing means is provided in the vicinity of the washing water discharge port of the washing water discharge means, if the vicinity of the washing water discharge port of the washing water discharge means is detachably attached to other portions, the bubble mixing means can be easily repaired. .

In a preferred embodiment of the present invention, the bubble mixing means includes a bubble generating member in which a plurality of independent opening holes are formed on a surface in contact with the washing water flowing through the washing water flow path.

Independent bubbles are generated in a plurality of independent open holes formed in a surface of the bubble generating member in contact with the washing water. If the plurality of openings formed on the surface of the bubble generating member in contact with the washing water are continuous openings in which a plurality of openings are connected, a plurality of bubbles are likely to be formed in the continuous openings, respectively, and they merge to form large diameter bubbles. easy. If the plurality of open holes formed on the surface of the bubble generating member in contact with the washing water are independent open holes, coalescence of bubbles at the time of bubble generation is prevented and large curing of the bubbles is prevented. The single bubbles generated in each of the plurality of independent open holes grow until they reach a predetermined bubble diameter, are entrained in the washing water flowing through the washing water flow path, and are separated from the independent open holes and dispersed in the washing water. Since a plurality of fine bubbles are generated and discharged into the washing water from a plurality of independent open holes formed on a surface having a predetermined width, the fine bubbles are dispersed and mixed in the washing water. As a result, bubbles are surely generated.

In the preferable aspect of this invention, the said independent opening hole is arrange | positioned regularly in grid form.

When the independent open holes are arranged regularly in a lattice shape, the open hole density can be increased, and the bubble mixing means can be miniaturized. In addition, the distance between bubbles generated can be kept uniform, and coalescing of bubbles during bubble generation can be prevented.

In a preferable embodiment of the present invention, the bubble mixing means includes a bubble generating member having a mesh structure on the surface of the bubble mixing means in contact with the washing water flowing through the washing water flow path.

When the surface which contacts the washing | cleaning water which flows through the washing | cleaning water flow path of a bubble generating member is made into a mesh structure, an independent opening hole is formed by this mesh structure. The mesh structure can be easily formed by overlapping the fibers or weaving the fibers. The thickness, spacing, and orientation of the fibers can be controlled to easily adjust the shape of the open hole, the distance between the open holes, and the like.

In a preferable embodiment of the present invention, the bubble generating member is an aggregate of substantially spherical fine particles.

Since the aggregate of substantially spherical microparticles | fine-particles is easy to raise a particle filling rate, and can shape the shape of an open hole, the continuous open hole to which open holes are connected is hard to generate | occur | produce, and an independent open hole is easy to be formed.

In a preferable embodiment of the present invention, the average particle diameter of the substantially spherical fine particles forming the aggregate is 50 µm to 300 µm.

In a preferable embodiment of the present invention, the gap between the substantially spherical fine particles forming the aggregate is 50 µm to 300 µm.

When the average particle diameter of substantially spherical microparticles | fine-particles is 50 micrometers-300 micrometers, when the particle | grains are filled in the densest cubic lattice form, the average diameter of the independent open hole which is a gap between substantially spherical microparticles | fine-particles will be 50 micrometers-300 micrometers. The average diameter of the bubbles produced and dispersed from the independent open holes having an average diameter of 50 µm to 300 µm is 100 µm to 100 µm.

In a preferable embodiment of the present invention, the filling rate of the substantially spherical fine particles forming the aggregate is 70% or more.

When spherical particles of the same diameter are filled in the most dense cubic lattice, the theoretical filling rate is 74%. Considering that it is difficult to fill the densest cubic lattice with the generation of static electricity or the like, in order to obtain independent open holes, the filling rate of the substantially spherical fine particles forming the aggregate is preferably 70% or more.

In a preferable embodiment of the present invention, the bubble generating member is a heated molded body of a heat-melt powder.

When heat-molding hot melt powder, the contact surface between particle | grains melt-bonds and an independent open hole is formed. The heated molded body of the hot melt powder has sufficient strength against water pressure and air pressure at the time of use.

In a preferred embodiment of the present invention, the surface in contact with the washing water of the bubble generating member extends coincident with the circumferential wall of the washing water flow path.

If the surface in contact with the washing water of the bubble generating member extends coincident with the circumferential wall of the washing water flow path, turbulence and stagnation of the washing water flow by the bubble generating member do not occur. Thus, bubbles are coalesced by the turbulence of the washing water flow. Alternatively, the retention time of bubbles increases due to the accumulation of washing water, thereby reducing the possibility of bubbles coalescing.

In a preferable embodiment of the present invention, the bubble generating member is a cylindrical porous body constituting the washing water flow path.

By supplying air to the tubular porous body constituting the washing water flow path, a large amount of bubbles can be mixed into the washing water flowing through the washing water flow path.

In a preferable embodiment of the present invention, a gas flow path is formed around the cylindrical porous body. When a gas flow path is formed around the cylindrical porous body, bubbles can be easily mixed into the washing water flowing through the cleaning water flow path in the cylindrical porous body through the cylindrical porous body.

In a preferred embodiment of the present invention, the cross-sectional area of the washing water flow path in the cylindrical porous body is constant or gradually enlarges from the upstream end to the downstream end.

By making the cross-sectional area of the washing water flow path in the cylindrical porous body constant or gradually expanding from the upstream end to the downstream end, it is possible to prevent the gas-liquid two-phase flow flowing in the washing water flow path in the cylindrical porous body from becoming a cyclic spray flow.

In a preferred embodiment of the present invention, the cylindrical porous body is press-fitted to the washing water discharge means.

By press-fitting and fixing the cylindrical porous body to the washing water discharging means, gas can be mixed into the washing water through the gap between the fixing portions, and it is possible to prevent the unexpected large diameter bubbles from mixing into the washing water.

In a preferable embodiment of the present invention, the inner diameter of the press-fitted portion of the cylindrical porous body is set larger than that of other portions.

By setting the inner diameter of the press-fitted portion of the cylindrical porous body larger than the inner diameter of the other portion, the inner diameter of the press-fitted portion after the press-fitting can be made the same as the inner diameter of the other portion, and the occurrence of turbulent flow of the washing water can be prevented.

In a preferred embodiment of the present invention, both ends of the cylindrical porous body are press-fitting portions, and the inner diameter of either press-fitting portion is set larger than that of the other portion.

By press-fitting both ends of the cylindrical porous body, the cylindrical porous body can be firmly fixed to the washing water discharge means. Although a cylindrical porous body is generally powder-molded, when the inner diameter of both ends of a cylindrical porous body is made large compared with the internal diameter of another site | part, a burr will arise on one side. Therefore, it is preferable to set the inner diameter of one end part larger than the inner diameter of another site | part.

In a preferable embodiment of the present invention, all or part of the bubble generating member is made of a water repellent material, or water repellent treatment is performed on the surface of the flow path of the bubble generating member.

When tap water is used as the washing water, calcium ions contained in a large amount in the tap water may precipitate in the form of calcium carbonate or the like in the openings of the bubble generating member, and the openings may be blocked, resulting in deterioration of the bubble generating member. In addition, the function of the bubble generating member may decrease due to the penetration pressure caused by the capillary phenomenon in the open hole. All or part of the bubble generating member is constituted by a water repellent member such as PTFE or ETEF, or water repellent treatment is performed on the surface of the bubble generating member using paraffin, carnauba, or the like to remove water into the open hole. It is possible to prevent entry and lower the penetration pressure due to the capillary phenomenon in the opening, thereby preventing deterioration of the bubble generating member and deterioration of the function.

In a preferred embodiment of the present invention, all or part of the bubble generating member is made of a hydrophilic material or hydrophilic treatment is performed on the surface of the flow path of the bubble generating member.

The wettability of the bubble generating member surface affects the bubble diameter. When the bubble generating member is hard to get wet (high water repellency), the gas flowing out from the open hole tends to stay on the bubble generating member surface, and the bubble diameter tends to be large. When the bubble generating member is well wetted (high hydrophilic), the gas flowing out from the open hole does not stay well on the bubble generating member surface, and the bubble diameter does not become large. All or part of the bubble generating member may be made of hydrophilic materials such as HDPE, LDPE, PP, PA, PET, MMA, glass, polyolefin, cellulose, or hydrophilic treatment using acrylic acid or the like on the surface of the bubble generating member. By carrying out or carrying out the hydrophilic treatment by plasma treatment, chromic acid treatment, silica coat or the like, it is possible to reduce the bubble diameter and prevent the generation of slag and bubbles.

In a preferred embodiment of the present invention, the surface of the flow path of the bubble generating member is coated with a surface treating agent that suppresses precipitation of calcium.

By covering the surface of the flow path of the bubble generating member with a surface treating agent that suppresses the precipitation of calcium, clogging of the open hole on the surface of the flow path can be prevented and the function degradation of the bubble generating member can be prevented.

In a preferred embodiment of the present invention, the component of the surface treating agent contains a siloxane bond.

When the component of the surface treating agent contains a siloxane bond, the precipitation of calcium on the flow path surface of the bubble generating member made of an acrylic material and the precipitation of calcium on the flow path surface of the bubble generating member made of a polyethylene material are effectively suppressed.

In a preferred embodiment of the present invention, the component of the surface treating agent contains acryl and silicone.

When acrylic and silicone are contained in the component of the surface treating agent, precipitation of calcium on the surface of the flow path of the bubble generating member made of acrylic material and precipitation of calcium on the flow path surface of the bubble generating member made of polyethylene material are effectively suppressed. .

In a preferable embodiment of the present invention, the bubble generating member is a polyethylene porous body, and the component of the surface treating agent contains an alkyl polysiloxane.

When alkyl polysiloxane is contained in the component of a surface treating agent, precipitation of calcium to the flow path surface of the bubble generation member which consists of a polyethylene porous body is suppressed effectively.

In a preferable embodiment of the present invention, the bubble generating member is an acrylic porous body, and the component of the surface treating agent contains a room temperature cured glass.

When the room temperature hardened glass is contained in the component of a surface treating agent, precipitation of calcium to the flow path surface of the bubble generation member which consists of an acrylic porous body is suppressed effectively.

In a preferred embodiment of the present invention, the washing water discharge device includes solute concentration control means for dissolving the solute to a predetermined concentration in the washing water.

Depending on the object of washing, it is preferable to dissolve solutes such as drugs and surfactants in the washing water to a predetermined concentration. By maintaining the flow rate of the washing water at a predetermined value, control of dissolution of the solute into the washing water is facilitated.

In a preferred embodiment of the present invention, the washing water discharge device includes water flow control means for intermittently stopping the water supply of the washing water in the washing water flow path during the operation of the forced air supply means.

By stopping the water supply of the washing water to the washing water flow path intermittently during the operation of the forced air supply means, precipitation of calcium on the surface of the flow path of the bubble generating member is effectively suppressed.

In a preferred embodiment of the present invention, the water supply means includes a washing water tank for storing the washing water, and the forced supply means forcibly supplies the bubble mixing means, and forcibly supplies the washing water tank to pressurize the washing water to pressurize the washing water. The washing water is discharged from the tank.

The washing water discharge device having the washing water tank can be widely applied to various kinds of portable washing devices. By using the forced air supply means not only for the gas but also for the washing water, the number of parts is reduced and the manufacturing cost of the washing water discharge device is reduced as compared with the case where the washing water feeding means is separately provided. By mixing bubbles in the running water of the washing water, fine bubbles can be mixed in the washing water in a large amount, and the washing effect of the washing water can be enhanced.

In a preferred embodiment of the present invention, a pressure regulating valve is provided in a pipe connecting the forced air supply means and the washing water tank and / or a pipe connecting the forced air supply means and the bubble mixing means.

The amount of bubble mixing into the washing water can be controlled by providing a pressure regulating valve in the pipe connecting the forced air supply means and the washing water tank and / or the pipe connecting the forced air supply means and the bubble mixing means.

In a preferred embodiment of the present invention, the size, weight, and power consumption of the washing water discharge device are set to values suitable for carrying.

By setting the dimensions, weight, and power consumption of the washing water discharging device to a value suitable for being portable, various washing apparatuses including the washing water discharging device can be made portable.

In the present invention, there is provided a human body washing apparatus, comprising any of the washing water discharging apparatuses described above.

In the human body washing apparatus according to the present invention, high cleaning power can be obtained by discharging bubbles, and a significant water saving effect can be obtained.

In a preferred embodiment of the present invention, the washing water discharging device of the human local washing apparatus includes a forced air supply means for forcibly supplying gas to the bubble mixing means, and the human local cleaning device also supplies the water supply means and the forced air supply at predetermined time intervals. And a control device for driving the means.

By driving the water supply means and the forced air supply means at predetermined time intervals, it is possible to automatically repair the human body local washing apparatus, and to maintain the function of the human body local washing apparatus for a long time.

In a preferred embodiment of the present invention, the bubble mixing means of the washing water discharge device included in the human local washing device includes a bubble generating member in which a plurality of independent opening holes are formed on a surface in contact with the washing water flowing through the washing water flow path. The generating member comprises a tubular porous body constituting the washing water flow path, and the tubular porous body is disposed in the washing water discharge means and in the vicinity of the washing water discharge port and obliquely downstream of the downstream end.

By installing the cylindrical porous body obliquely in the washing water discharge means and in the vicinity of the washing water discharge port, the downstream end thereof is obliquely upward, the washing water flow path downstream of the cylindrical porous body can be extended substantially linearly to prevent coalescing of bubbles. have.

In a preferred embodiment of the present invention, the human body washing apparatus includes volatile component mixing means for mixing volatile components into a gas supplied to the bubble mixing portion of the washing water flow path.

Usability of a human body washing | cleaning apparatus improves by mixing volatile components, such as a deodorant and a fragrance, into the gas in the bubble mixed with wash water.

In a preferred embodiment of the present invention, the washing water discharging means of the washing water discharging device included in the human body washing apparatus includes a plurality of washing water discharge ports, and the air bubbles are formed by either of the plurality of washing water discharge ports through the flow path switching means. Optional flow.

If a plurality of washing water discharge ports are provided in the washing water discharge means, and the human body local washing apparatus is configured to selectively discharge and discharge bubbles to one of the plurality of washing water discharge ports through the flow path switching means, Usability of the local cleaning device is improved.

In the present invention, any one of the above-described washing water discharging devices is provided. A shower device, a hair washing device, a face washing device, a face washing device, a palatal washing device, a hand washing device, a faucet ( We provide utensils, bathtub.

By applying the washing water discharge device to a shower device, a hair washing device, a face washing device, a face washing device, a palate cleaning device, a hand washing device, a power receiving device, a bath tub, and the like, it is possible to increase the cleaning power of these devices and to save the washing water. Become.

In this invention, the ultrasonic cleaning apparatus provided with any one said washing | cleaning water discharge apparatus is provided.

When the bubbles discharged from the washing water discharge device according to the present invention collide with the surface to be cleaned, ultrasonic vibration is generated on the surface to be cleaned by the difference between the kinetic energy of the gas in the bubble and the kinetic energy of the washing water between the bubbles. The cleaning power of the becomes high.

In this invention, the hot water supply apparatus provided with any one said washing | cleaning water discharge apparatus is provided. By applying the washing water discharge device to the hot water supply device, it is possible to save the amount of hot water used, to reduce the size of the heating device, and to further reduce the size of the hot water supply device and to save energy.

A. First Embodiment

A-1 Structure of Washing Water Discharge Device

The washing water discharge device according to the first embodiment of the present invention will be described.

As shown in FIG. 5, the washing water discharge device A according to the first embodiment of the present invention includes a washing water discharge nozzle 1 and a pipe forming a washing water flow path leading to the washing water discharge nozzle 1 ( 2), the bubble mixing apparatus 3 provided in the middle of the piping 2, the forced air supply apparatus 4 forcing air supply to the bubble mixing apparatus 3, and the bubble mixing apparatus 3 in the middle of the piping 2 further. A constant flow valve 5 provided upstream of the valve is provided. The upstream end of the pipe 2 is connected to a power receiving jig of a water supply not shown.

The bubble mixing apparatus 3 is provided with the cylindrical bubble generating member 3a which consists of a porous material which forms the washing water flow path. The inner circumferential surface of the cylindrical bubble generating member 3a extends coincident with the circumferential wall of the front and rear washing water flow paths. A large number of independent opening holes are formed in the inner circumferential surface of the bubble generating member 3a. The cross-sectional area of the washing water flow path in the bubble generating member 3a is gradually expanding from the upstream end to the downstream end. The pressure chamber 3b is formed around the bubble generating member 3a.

The forced air supply device 4 includes a pipe 4a connected to the pressure chamber 3b of the bubble mixing device 3. In the middle of the piping 4a, the check valve 4b, the air pump 4c, and the air filter 4d for vibration damping are provided in order from the downstream side. The pipe 4a upstream of the air filter 4d is opened to the atmosphere. The control apparatus 4e which controls the operation | movement of the air pump 4c is provided.

The cross-sectional area of the washing water flow passage formed by the pipe 2 and the washing water discharge nozzle 1 in the downstream region than the bubble generating member 3a and the bubble generating member 3a is the washing water flow passage by the bubble generating member 3a. It is set larger than the projected area of a sphere having a diameter equal to the average diameter determined from the average volume of bubbles mixed in the washing water flowing through. In addition, the cross-sectional area of the washing water flow path in the downstream region than the bubble generating member 3a is set to be equal to or larger than the cross-sectional area of the downstream end of the bubble generating member 3a.

In the washing water discharge device A having the above configuration, when the power receiving jig of the tap water (not shown) is opened, the tap water flows into the pipe 2, and the flow rate is compressed to a predetermined value through the constant flow valve 5. Tap water of a predetermined flow rate flows into the bubble generating member 3a of the bubble mixing apparatus 3 through the pipe 2.

When power is supplied to the control device 4e, the air pump 4c operates under the control of the control device 4e. Air is sucked into the pipe 4a and is damped through the air filter 4d. The damped air is pumped into the pressure chamber 3b through the air pump 4c and the check valve 4b. The pressurized air introduced into the pressure chamber 3b passes through the fine holes of the bubble generating member 3a made of a porous material, and forms independent bubbles in each of a plurality of independent open holes formed in the inner circumferential surface of the bubble generating member 3a. . The bubbles grow to a predetermined bubble diameter, and are entrained in tap water flowing through the washing water flow path formed by the inner circumferential surface of the bubble generating member 3a, are separated from the independent openings, become fine bubbles, and are dispersed and mixed in the tap water. .

A large amount of air becomes fine bubbles and is dispersed and mixed in tap water, and the flow of tap water becomes bubbles. Bubbles flow through the pipe 2 and are separated from the washing water discharge nozzle 1 and discharged. The classification of bubbles has a high cleaning power, impinges on the surface to be cleaned and sufficiently cleans the surface. High water saving effect can be obtained by discharging bubbles.

6 is a view of bubbles discharged from a washing water discharge device such as the washing water discharge device A. As shown in FIG. It can be seen that a large amount of fine bubbles are contained in the washing water. Since the bubble is kept by the washing water, it does not interfere with the atmosphere even after discharge, and reaches the surface to be cleaned reliably.

In the washing | cleaning water discharge apparatus A, a single independent bubble is produced | generated in each of the independent opening hole provided in the inner peripheral surface of the bubble generation member 3a. If a large number of opening holes formed in the inner circumferential surface of the bubble generating member 3a are continuous openings in which a plurality of opening holes are connected, a plurality of bubbles are likely to be generated in each opening hole, and these bubbles coalesce to easily harden the bubbles. In the washing | cleaning water discharge apparatus A, since many opening holes formed in the inner peripheral surface of the bubble generation member 3a are independent opening holes, coalescing of bubbles at the time of bubble generation is prevented, and large hardening of bubbles is prevented. Since the inner circumferential surface of the bubble generating member 3a forms the circumferential wall of the washing water flow path, bubbles generated by the openings formed in the inner circumferential surface of the bubble generating member 3a grow in a direction substantially perpendicular to the direction of the washing water flow. . As a result, the shearing force is applied to the bubbles during production from the flowing water of the washing water, and the bubbles are entrained in the washing water at the initial stage of growth, leave the open holes, and are dispersed and mixed in the washing water. As a result, fine bubbles are dispersed and mixed in the washing water.

In the washing water discharge device A, since bubbles are discharged substantially uniformly into the flowing water of tap water from the entire inner circumferential surface of the bubble generating member 3a, fine bubbles are dispersed and mixed into the flowing water of the tap water almost uniformly.

Therefore, in the washing water discharge device A, a large amount of fine bubbles are dispersed and mixed substantially uniformly in the tap water flowing through the washing water flow path to form bubbles.

In the washing water discharge device A, the cross-sectional area of the washing water flow path formed by the piping 2 and the washing water discharge nozzle 1 in the downstream region is less than the bubble generating member 3a and the bubble generating member 3a. The generating member 3a is set larger than the projection area of a sphere having a diameter equal to the average diameter determined from the average volume of bubbles mixed in the tap water flowing through the washing water flow path. This configuration controls the diameter of the micropore of the porous material constituting the bubble generating member 3a, and furthermore, the diameter of the independent open hole formed in the inner circumferential surface, or the apparent flow rate of the tap water (volume flow rate of the tap water alone is the cross-sectional area of the flow path). Control value), or by controlling the wettability of the porous material as described below, and controlling the average volume of bubbles to be mixed in tap water.

In the washing water discharge device A, the cross-sectional area of the washing water flow path formed by the inner circumferential surface of the bubble generating member 3a gradually increases from the upstream end to the downstream end. In addition, the cross-sectional area of the washing water flow path in the downstream region than the bubble generating member 3a is set to be equal to or larger than the cross-sectional area of the downstream end of the bubble generating member 3a.

Therefore, in the washing water discharge device A, tap water in which a plurality of fine bubbles are dispersed and mixed is discharged from the washing water discharge nozzle 1 and reaches the surface to be cleaned while maintaining a state in which the fine bubbles are dispersed and mixed in a large amount. .

As can be seen from the above description, the washing water discharge device A can discharge the classification of the bubbles of the tap water in which the fine bubbles are dispersed and mixed in a large amount from the washing water discharge nozzle 1.

In the washing | cleaning water discharge apparatus A, the control apparatus 4e controls the applied voltage of the air pump 4c so that the range of gas-liquid ratio (eta) may be 0.5-4.0. When the pressurized air is mixed in tap water by using a pump, the gas / liquid ratio (η) can be raised to 2.85 or more, which is the theoretical maximum of the gas / liquid ratio when the spherical bubble is filled in the most dense cubic lattice. have. However, if the gas / liquid ratio η becomes excessive, there is a possibility that bubbles mixed in the tap water coalesce and the flow mode of the gas-liquid two-phase flow becomes slag and foam. Therefore, in the washing | cleaning water discharge apparatus A, the maximum value of the gas-liquid ratio (eta) was set to 4.0 from a viewpoint of preventing generation | occurrence | production of slag and foams. In addition, when the gas / liquid ratio η was too small, the cleaning power of the fractionation was increased and a high water saving effect could not be obtained. Therefore, the minimum value of the gas / liquid ratio was set to 0.5.

Supplement the explanation about the gas and liquid ratio.

The irritation sensation generated when bubbles of washing water collide with the surface to be cleaned increases as the gas / liquid ratio η increases. In a washing mode with a small flow rate of washing water that reduces light dirt, strong washing power is not required, and the need for saving water is low. Therefore, it is preferable to set the gas / liquid ratio η to 1.0 or less to weaken the stimulus. .

In the washing mode with a large amount of washing water flow to drop the strong dirt, it is preferable to set the gas-liquid ratio η to 1.6 or more in order to obtain strong washing power and high water saving effect. However, when the flow rate of the washing water is large, the turbulence of the washing water increases due to the increase of the washing water flow rate, so that the bubbles are coalesced and largely cured, and the stability of the bubbles is impaired, and the possibility of generating slag or foam is increased. Therefore, in order to ensure the stability of bubbles, it is preferable to set the gas-liquid ratio η to 2.3 or less.

The theoretical maximum value of the gas-liquid ratio η in the bubbles is 2.85 achieved when the spherical bubbles are filled in the most dense cubic lattice. When the gas-liquid ratio (eta) exceeds 2.85, the bubbles are theoretically large in contact and coalescing with each other, and the stability of the bubbles is impaired. However, since bubbles can be deformed, even if bubbles are actually in contact with each other, by deforming with each other, coalescing between bubbles is suppressed and the stability of bubbles is maintained. Moreover, since the bubble diameter distribution of the bubble contained in a bubble is disperse | distributed to some extent, it is possible to press the bubble of a relatively small diameter among the bubbles of a relatively large diameter. As a result, the gas-liquid ratio η can be raised to about 4.0 while maintaining the stability of the bubbles. In the washing | cleaning mode of the moderate washing | cleaning water flow volume which is easy to acquire the stability of foam | bubble, it is preferable to raise the setting value of gas-liquid ratio (eta) to about 4.0, and to implement strong washing | cleaning power and high water saving effect.

In the washing | cleaning water discharge apparatus A, since the flow volume of the tap water which flows through the washing | cleaning water flow path of the bubble generation member 3a is controlled by the fixed flow volume by the constant flow valve 5, the voltage applied to the air pump 4c. By controlling only the gas and liquid ratio η, it is possible to easily control the gas / liquid ratio η, and furthermore, to easily control the cleaning power for classifying the bubbles discharged from the washing water nozzle 1.

In the washing water discharge device (A), since forced air is supplied to the cylindrical bubble generating member 3a made of the porous material constituting the washing water flow path using the air pump 4c, a large amount of tap water flows through the washing water flow path. Microbubbles can be easily mixed.

In the washing water discharge device A, since the pressure chamber 3b is formed around the cylindrical bubble generating member 3a, the washing water in the bubble generating member 3a is forced to supply the pressure chamber 3b. Bubbles can be easily mixed into the tap water flowing through the flow path through the bubble generating member 3a.

In the washing water discharge device A, since the inner circumferential surface of the cylindrical bubble generating member 3a extends coincident with the circumferential wall of the front and rear washing water flow paths, the water flow by the bubble generating member 3a No turbulence or pooling occurs. When the tap water flows into turbulent flow, the possibility of bubbles coalescing increases, and when tap water accumulates, the time that the bubbles stay in the washing water flow path increases, which increases the possibility of bubbles coalescing. In the washing | cleaning water discharge apparatus A, since turbulence or pooling does not generate | occur | produce in tap water flow, since it is unlikely that a bubble will coalesce, favorable bubble flow is discharged.

In the washing | cleaning water discharge apparatus A, the check valve 4b which prevents the backflow of the tap water to the air pump 4c is provided in the cylindrical bubble generation member 3a, and tap water flows in into the air pump 4c, The occurrence of the situation in which the function of the pump 4c falls is prevented.

In the washing water discharge device A, an air filter 4d is provided upstream of the air pump 4c to prevent clogging due to dust of the bubble generating member 3a, and the function of the bubble generating member 3a. It prevents a fall.

A-2 Specific Measures to Form Independent Opening Holes

The concrete measures for forming an independent opening hole in the inner peripheral surface of the bubble generating member 3a will be described.

(1) heating molding of fine particles of a heat-melt material

The electron microscope enlarged view of the surface of the heat-molded article formed by filling a metal mold | die with the substantially spherical microparticles | fine-particles of ultra high molecular weight polyethylene to heat, and is formed is shown. As can be seen in FIG. 7, a number of independent open holes are formed on the surface of the heated molded article. Since the aggregate of substantially spherical microparticles | fine-particles is easy to raise a particle filling rate, and can shape the shape of an open hole, the continuous open hole to which open holes are connected is hard to generate | occur | produce, and an independent open hole is easy to be formed. When the particle diameter is made uniform, the open holes can be arranged regularly in a lattice shape. By arranging the open holes regularly in a lattice shape, the distance between bubbles to be generated can be maintained uniformly, and the coalescing of bubbles at the time of bubble generation can be prevented. Further, by regularly arranging the open holes in a lattice shape, the open hole density can be increased, the bubble generating member 3a can be downsized, and the washing water discharge device can be downsized.

Ultra-high molecular weight polyethylene does not flow well in a molten state because its melt index (MI) is low and the property at the time of melting is close to rubber. When approximately spherical fine particles of ultra high molecular weight polyethylene are filled into a mold and heated to a temperature slightly above the melting point, only the contacts are melt-bonded without changing the shape of the particles and the particles. Therefore, the diameter of the independent opening hole formed in the inner peripheral surface of the bubble generation member 3a can be freely controlled by controlling the particle diameter and the filling rate by using substantially spherical fine particles of ultra high molecular weight polyethylene. Since ultrahigh molecular weight polyethylene is chemically stable, it is suitable for a cleaning liquid containing chlorine, an acid group, an organic solvent, and the like, and is also suitable for a cleaning liquid made of water because it has little water absorption.

8, the electron microscope enlarged view of the surface of the heat-molded article formed by filling the metal mold | die with the substantially spherical microparticles | fine-particles of an acrylic resin, and heating is shown. As can be seen from FIG. 8, a number of independent open holes are formed in the surface of the heat-molded article in a substantially mesh shape. Since acrylic resin has low surface tension and high affinity with water, it is suitable for generation of fine bubbles as described later.

The bubble generating member 3a may be formed by heat-molding fine particles of a heat-melt material such as metal such as bronze or stainless steel, glass or various ceramics.

When the fine particles and powder of the heat-melting material are heat-molded, the particles are fused, so that the bubble generating member 3a having sufficient strength with respect to water pressure or air pressure can be obtained.

It is preferable that the average particle diameter of the substantially spherical microparticles | fine-particles of a heat-melting material shall be 50 micrometers-300 micrometers. When the average particle diameter of the substantially spherical fine particles is 50 μm to 300 μm, when the approximately spherical fine particles are filled in the most dense cubic lattice, the average diameter of the independent open holes, which are the gaps between the approximately spherical fine particles, becomes 50 μm to 300 μm. The average diameter of the bubbles produced and dispersed from the independent open holes having an average diameter of 50 µm to 300 µm is 100 µm to 100 µm. Fine bubbles having an average diameter of 100 µm to 100 µm do not coalesce well because the rigidity does not deform very well. Stable bubbles can be obtained by mixing fine bubbles having an average diameter of 100 탆 to 100 탆 in washing water. In the case where the washing water discharge device A is attached to the human body washing device, in consideration of piping dimensions and nozzle dimensions, the average diameter of the bubbles in the bubbles is 100 μm in order to flow bubbles into the washing water flow path without any problems. It is preferable to set it as follows. On the other hand, it is technically difficult to generate excessively fine bubbles. Taking these into consideration, it is preferable that the average diameter of the bubble in the bubble discharged from the washing | cleaning water discharge apparatus attached to a human body washing | cleaning apparatus is 100 micrometers-100 micrometers.

It is preferable that the filling rate of the substantially spherical microparticles | fine-particles of a heat-melting material shall be 70% or more.

When spherical particles of the same diameter are packed into the most dense cubic lattice, the theoretical maximum filling rate is 74%. In view of the difficulty in filling into the most dense cubic lattice shape due to the generation of static electricity, it is preferable to make the filling rate of the substantially spherical particles forming the aggregate to be 70% or more in order to obtain independent open holes.

(2) woven fabric, nonwoven fabric

A mesh structure can be formed by knitting, weaving or superposing a fiber material such as nylon to form a woven or nonwoven fabric. The mesh structure forms an independent opening hole. When the thickness and spacing of the fibers are made substantially uniform, regular open holes of a substantially lattice shape can be formed. The thickness, spacing, and orientation of the fibers can be controlled to easily adjust the shape of the open hole, the distance between the open holes, and the like. Since the woven fabric and the nonwoven fabric do not have sufficient strength, it is preferable to fix them to the support. By stacking a plurality of woven fabrics and nonwoven fabrics, vibration of the woven fabric and the nonwoven fabric can be suppressed, and the bubble mixing operation can be stabilized.

(3) other

Continuous pores may be formed by using a phase glass.

A-3 water repellent treatment, hydrophilic treatment

In the washing water discharge device (A), all or part of the cylindrical bubble generating member 3a made of a porous material is made of a water repellent material such as PTFE or ETEF, or a cylindrical bubble generating member made of a porous material ( Water repellent treatment may be performed on the surface of the flow path of 3a) using paraffin, carnauba or the like. When tap water is used as the washing water, calcium ions contained in large amounts in the tap water are precipitated in the form of calcium carbonate or the like in the fine pores of the porous material, and the fine pores are clogged to deteriorate the bubble generating member 3a. have. In addition, there is a possibility that the function of the bubble generating member 3a may decrease due to the penetration pressure caused by the capillary phenomenon on the surface of the porous material. All or part of the cylindrical bubble generating member 3a made of a porous material is formed of a water repellent material such as PTFE or ETEF, or paraffin or carnau on the surface of the flow path of the cylindrical bubble generating member 3a made of a porous material. The water-repellent treatment is performed using a bar or the like to prevent water from entering the micropores of the porous material and lower the penetration pressure due to capillary action on the surface of the porous material, thereby degrading the bubble generating member 3a and degrading the function. Can be prevented.

In the washing water discharge device (A), all or part of the cylindrical bubble generating member 3a made of a porous material is made of hydrophilic materials such as HDPE, LDPE, PP, PA, PET, MMA, glass, polyolefin, and cellulose. Or hydrophilic treatment may be performed on the surface of the flow path of the cylindrical bubble generating member 3a made of a porous material using acrylic acid or the like, or hydrophilic treatment may be performed by plasma treatment, chromic acid treatment, silica coating or the like.

The wettability of the surface of the porous material affects the bubble diameter. When the porous material is not wet well (high water repellency), the gas flowing out from the micropores does not stay well on the surface of the porous material, and the bubble diameter is not large. When the porous material is well wetted (high hydrophilic), the gas flowing out of the micropores does not stay well on the surface of the porous material, and the bubble diameter is not large. All or part of the cylindrical bubble generating member 3a made of a porous material is composed of hydrophilic materials such as HDPE, LDPE, PP, PA, PET, MMA, glass, polyolefin, cellulose, or a cylindrical shape made of a porous material. Hydrophilic treatment is carried out on the surface of the flow path of the bubble generating member 3a using acrylic acid or the like, or hydrophilic treatment is performed by plasma treatment, chromic acid treatment, silica coat, or the like to reduce the bubble diameter and generate slag and bubbles. Can be prevented.

A-4 Addition of various functions

In the washing water discharge device (A), a temperature control device for heating tap water to a predetermined temperature is connected to a pipe (2) between the constant flow valve (5) and the bubble mixing device (3), or to the tap water to a predetermined concentration. You may connect the solute concentration control apparatus which melt | dissolves solutes, such as a chemical | medical agent and surfactant.

Depending on the washing target, it is preferable to heat the washing water to a predetermined temperature or to dissolve solutes such as a drug and a surfactant in the washing water to a predetermined concentration. In the washing water discharge device A, since the flow rate of the tap water flowing through the washing water flow path of the bubble generating member 3a is controlled by the constant flow rate by the constant flow rate valve 5, heating control of the tap water and solute to the tap water. Its dissolution control is easy.

In the washing water discharge device (A), the air pump (4c) and the control device (4e) are removed, and the bubble generating member (3a) is subjected to the negative pressure of the tap water flowing through the washing water flow path of the bubble generating member (3a). The air may be supplied by sucking air. In this case, the gas / liquid ratio is about 0.5.

In the washing water discharge device A, the bubble generating member 3a may be formed in a cylindrical shape having a constant cross-sectional area from the upstream end to the downstream end. Even if the shape of the bubble generating member 3a is a cylindrical shape having a constant cross-sectional area from the upstream end to the downstream end, the flow mode of the gas-liquid two-phase flow in the washing water flow path of the bubble generating member 3a does not become an annular spray flow. Therefore, the bubble generating member 3a may be formed in a cylindrical shape having a constant cross-sectional area from the upstream end to the downstream end.

Although the bubble generating member 3a was a cylindrical member extending over the entire circumference of the circumferential wall of the washing water flow path, a part of the circumferential direction of the circumferential wall of the washing water flow path may be formed of a bubble generating member made of a porous material. Also in this case, fine bubbles can be dispersed and mixed in the washing water.

B. Second Embodiment

A washing water discharge device according to a second embodiment of the present invention will be described.

As shown in FIG. 9, the washing | cleaning water discharge apparatus B which concerns on the 2nd Example of this invention is the piping which forms the washing water discharge nozzle 11 and the washing water flow path which reaches the washing water discharge nozzle 11 (12), the bubble mixing device 13 provided in the middle of the piping 12, the forced air supply device 14 forcibly supplying the bubble mixing device 13, and the washing water tank provided upstream of the pipe 12 ( 15).

The bubble mixing apparatus 13 is provided with the cylindrical bubble generating member 13a which consists of the porous material which comprises the washing water flow path. A large number of independent opening holes are formed in the inner circumferential surface of the bubble generating member 13a. The cross-sectional area of the washing water flow path of the bubble generating member 13a gradually increases from the upstream end to the downstream end. The pressure chamber 13b is formed surrounding the bubble generating member 13a.

The forced air supply device 14 includes a pipe 14a connected to the pressure chamber 13b of the bubble mixing device 13. In the middle of the piping 14a, the pressure regulating valve 14b, the air pump 14c, and the damping air filter 14d are provided in order from the downstream side. The piping 14a upstream from the air filter 14d is open | released to air | atmosphere. The control apparatus 14e which controls the operation | movement of the air pump 14c is provided. The pipe 14a 'extending from the air pump 14c is connected to the upper portion of the washing water tank 15 via the pressure regulating valve 14b'.

The cross-sectional area of the washing water flow passage formed by the pipe 12 and the washing water discharge nozzle 11 in the downstream region than the bubble generating member 13a and the bubble generating member 13a is the washing water flow passage by the bubble generating member 13a. It is set larger than the projected area of a sphere having a diameter equal to the average diameter determined from the average volume of bubbles mixed in the washing water flowing through. Moreover, the cross-sectional area of the washing | cleaning water flow path of a downstream region rather than the bubble generation member 13a is set more than the cross-sectional area of the downstream end of the bubble generation member 13a.

The dimension, weight, and power consumption of the washing water discharge device B are set to values suitable for carrying.

In the washing water discharge device B having the above configuration, when the power is supplied to the control device 14e, the air pump 14c operates under the control of the control device 14e. Air is sucked into the pipe 14a and is damped through the air filter 14d. The damped air is passed through the air pump 14c and the pressure regulating valve 14b 'to the washing water tank 15. The washing water in the washing water tank 15 is pressurized, discharged from the washing water tank 15, passes through the pipe 12, and flows into the bubble generating member 13a of the bubble mixing apparatus 13.

The air passing through the air pump 14c passes through the pressure regulating valve 14b and is pumped into the pressure chamber 13b. The pressurized air introduced into the pressure chamber 13b passes through the fine holes of the bubble generating member 13a made of a porous material, passes through a plurality of independent open holes formed in the inner circumferential surface, and is formed inside the bubble generating member 13a. Fine bubbles are dispersed and mixed into the washing water flowing in the water passages almost uniformly.

A large amount of air becomes fine bubbles and is dispersed and mixed in the washing water, and the flow of the washing water becomes bubbles. Bubbles flow through the pipe 12 and are discharged after being separated from the washing water discharge nozzle 11. The classification of bubbles has a high cleaning power, impinges on the surface to be cleaned and sufficiently cleans the surface. By discharging bubbles, a high water saving effect can be obtained.

The washing water discharge device B including the washing water tank can be widely applied to various kinds of portable washing devices. By using the air pump 14c of the forced air supply device 14 not only for gas but also for washing water, the number of parts is reduced as compared with the case where a separate pump is provided for washing water feeding, and the washing water discharge device B Manufacturing cost is reduced. When bubbles are mixed into the remaining washing water through the bubble generating member 13a, if the bubble diameter does not increase to some extent, the bubbles do not fall from the bubble generating member 13a and are not mixed in the washing water. When bubbles are mixed into the flowing water of the washing water via the bubble generating member 13a, even if the bubble diameter is small, bubbles are separated from the bubble generating member 13a by the flowing water and mixed into the washing water. Since the washing water discharge device B does not mix bubbles in the remaining washing water, but mixes bubbles in the flowing water of the washing water, fine bubbles can be mixed in the washing water in a large amount, thereby improving the washing effect of the washing water. It can increase.

The pressure adjustment valve 14b is provided in the piping 14a, the pressure of the air which flows into the pressure chamber 13b is adjusted, the bubble production | generation amount from the bubble generation member 13a is adjusted, and also the piping 14a 'is carried out. By installing a pressure regulating valve l4b 'in the air, adjusting the pressure of the air flowing into the washing water tank 15 to adjust the flow rate of the washing water flowing through the washing water flow path formed inside the bubble generating member 13a. The amount of bubble mixing into the washing water can be controlled. Only one of the pressure regulating valves 14b and 14b 'can control the amount of bubbles mixed into the washing water.

Since the size, weight, and power consumption of the washing water discharge device B are set to values suitable for carrying, a shower, a human body washing device, a hand washing device, a palatal washing device provided with the washing water discharge device B are provided. Various washing | cleaning apparatuses, such as these, can be made portable.

C. Sewage removal device of bubble generating member

10 (a) to 10 (c) show an example of the automatic removal device of dirt attached to the inner surface of the bubble generating member.

A bubble generating member of the bubble mixing device such as the bubble mixing device 3 of the first embodiment and the bubble mixing device 13 of the second embodiment in the middle of a pipe 22 for supplying the washing water to the cleaning water discharge nozzle 21 ( 23a) and the pressure chamber 23b are provided. The pipe 22 is bent at a substantially right angle at an upstream position of the bubble generating member 23a. These various members are integrated and are driven in the left-right direction in FIGS. 10A to 10C by a driving device not shown.

An opening 22a is formed in the bent portion of the pipe 22. The rod-shaped member 25 passes through the opening 22a and is inserted into the pipe 22 and the bubble generating member 23a. The end of the portion extending out of the opening 22a of the rod-shaped member 25 is fixed to the floating support member. The 1st cover member 26a is fixed to the fixed end vicinity of the rod-shaped member 25, and the 2nd cover member 26b is fixed to the other end. The brush 27 is being fixed in the vicinity of the other end of the rod-shaped member 25.

When the washing water is not supplied to the pipe 22 and the washing water discharge nozzle 21 is stopped, the various members integrated are not shown in Figs. 10 (a) to 10 (c) by a driving device not shown. ), The first lid member 26a closes the opening 22a of the pipe 22, as shown in FIG. 10 (b).

Before the washing water is supplied to the pipe 22, the various members integrated together are driven to the left as shown in Fig. 10 (c) by a drive device (not shown). At this time, the fixed and floating brush 27 rubs the inner surface of the bubble generating member 23a to remove dirt attached to the inner surface of the bubble generating member 23a. The second lid member 26b closes the opening 22a of the pipe 22.

The washing water is supplied to the pipe 22, bubbles generated in the bubble generating member 23a are mixed into the flowing water of the washing water, and bubbles are discharged from the washing water discharge nozzle 21.

When the discharge of the bubbles from the washing water discharge nozzle 21 is finished, the various members integrated together are driven to the right as shown in Fig. 10B by a driving device not shown. At this time, the fixed and floating brush 27 rubs the inner surface of the bubble generating member 23a to remove dirt attached to the inner surface of the bubble generating member 23a. The first lid member 26b closes the opening 22a of the pipe 22.

Repair of the washing water discharge device by using the above-mentioned automatic removal device of the dirt attached to the inner surface of the bubble generating member as the washing water discharge device using water containing a lot of ions which are easy to precipitate such as calcium ions and magnesium ions. In this way, the function of the washing water discharge device can be maintained for a long time.

D. Third Embodiment

A washing water discharge device according to a third embodiment of the present invention will be described.

The washing water discharge device C according to the present embodiment is assembled to a human body washing device attached to the toilet bowl. As shown in FIG. 11, tap water is supplied to the heat exchanger 31 via the sole-single valve 30 which has a pressure adjustment function. The first water level sensor 33, the second water level sensor 34, and the water temperature in the heat exchanger for detecting the heater 32 and the water level in the heat exchanger to prevent unnecessary heating and the like in the heat exchanger 31. The temperature sensor 35 is provided. The tap water heated up to an appropriate temperature is led to the water flow path switching valve 37 via the atmospheric opening valve 36. Based on the operation of the operation unit 38 by the user in the feeding channel switching valve 37, the flow rate is adjusted, the flow path is switched, and the tap water whose flow rate is adjusted in the selected flow path among the plurality of feeding paths installed in the nozzle 39 Supplied. The air pressurized by the air pump 40 is led to the air flow path switching valve 41. Based on the operation of the operation unit 38 by the user in the air flow path switching valve 41, the flow path is switched, and pressurized air is supplied to the selected flow path among the plurality of air flow paths provided in the nozzle 39.

As shown in FIG. 12, FIG. 13, the front-end | tip part of the nozzle 39 comprises the detachable nozzle head 39a. The butt cleaning discharge ports 42 and 43 and the bidet cleaning discharge ports 44 and 45 are formed on the upper surface of the nozzle head 39a. The bubble mixing apparatus 46 is provided directly under the discharge port 44. The bubble mixing apparatus 46 is provided with the straight cylindrical bubble generating member 46a which consists of a resin heat-sintering material which is a porous material. A large number of independent opening holes are formed in the inner circumferential surface of the bubble generating member 46a. Both end portions of the bubble generating member 46a are fixed to the nozzle head 39a by press-fitting the nozzle head 39a. The inner diameter of one end of the bubble generating member 46a is set to a larger value than the inner diameter of the other portion. The inner circumferential surface of the bubble generating member 46a forms a washing water flow path. The bubble generating member 46a is provided so as to obliquely face the downstream end of the washing water flow path formed by the inner circumferential surface upwardly. The downstream end of the washing water flow path formed by the inner circumferential surface of the bubble generating member 46a is formed in the nozzle head 39a and communicates with the discharge port 44 through the straight washing water flow passage 47 extending obliquely upward. have. The upstream end of the washing water flow path formed by the inner circumferential surface of the bubble generating member 46a communicates with the washing water flow passage 48 formed inside the nozzle head 39a. The washing water flow passage 48 extends beyond the bubble generating member 46a to the end of the nozzle head 39a, is formed in the nozzle head 39a, and is formed in the substantially straight washing water flow passage 49 extending obliquely upward. Communicating. The washing water flow passage 49 communicates with the discharge port 45. The upstream end of the washing water flow path 48 is connected to a washing water pipe (not shown) provided in the nozzle 39. The pressure chamber 46b is formed around the bubble generating member 46a. The pressure chamber 46b communicates with the air flow path 50 formed inside the nozzle head 39a. The upstream end of the air flow path 50 is connected to an air pipe (not shown) provided in the nozzle 39.

A bubble mixing device such as the bubble mixing device 46 is provided just below the discharge ports 42 and 43. The washing water pipe and the air pipe communicating with the bubble mixing device provided directly below the discharge port 42 in the nozzle 39, and the washing water pipe and the air pipe communicating with the bubble mixing device provided directly below the discharge port 43 are provided. It is installed.

A member downstream from the feeding channel switching valve 37 constitutes the washing water discharge device C. In Fig. 11, reference numeral 51 denotes a control device of the human body washing unit, 52 denotes a power supply unit, and an operation unit of a main power source. Reference numeral 53 is a use detection device for detecting the use of the toilet.

In this human body washing | cleaning apparatus, normally, the use detection means 53 detects use of a toilet bowl automatically, and cancels a standby state. When the user operates the operation unit 38 and selects the discharge of the washing water from the discharge ports 44 and 45, the washing is carried out through the switching channel 37 and the washing water pipe (not shown) provided in the nozzle 39. Tap water is supplied to the water passage 48, and pressurized air is supplied to the air passage 50 through an air passage switching valve 41 and an air pipe (not shown) provided in the nozzle 39. In the bubble mixing device 46, a large amount of fine bubbles are dispersed and mixed substantially uniformly in the tap water to generate bubbles. Bubbles are discharged from the discharge port 44. Tap water in which bubbles are not mixed is discharged from the discharge port 45. Bubbles and tap water that do not mix are hit by the government and clean the government.

When the user operates the operation unit 38 to select the discharge of the washing water from the discharge port 42 or the discharge port 43, the water supply switching valve 37 and the washing water pipe (not shown) provided in the nozzle 39 are not shown. The washing water is supplied to the bubble mixing apparatus installed directly below the discharge port 42 or the discharge port 43 through the air outlet switch 42 and the discharge port 42 through an air pipe (not shown) installed in the nozzle 39. Or pressurized air is supplied to the bubble mixing apparatus installed directly below the discharge port 43. In the bubble mixing device provided directly below the discharge port 42 or the discharge port 43, a large amount of fine bubbles are dispersed and mixed substantially uniformly in the tap water and bubbles are generated. Bubbles are discharged from the discharge port 42 or the discharge port 43 to clean the target parts.

In the washing | cleaning water discharge apparatus C, the washing water flow path 47 downstream from the bubble generation member 46a extends substantially linearly. If the washing water flow passage 47 is curved, when the bubbles flow through the curved portion, the dispersed fine bubbles are aggregated under centrifugal force, and the bubbles may become slag and bubbles. When the washing water flow passage 47 is extended substantially in a straight line, the aggregates of fine bubbles due to the centrifugal force do not occur and the bubbles are maintained.

In the washing | cleaning water discharge apparatus C, since the bubble mixing apparatus 46 is provided in the nozzle head 39a, More specifically, just below the discharge port 44 formed in the nozzle head 39a, foam | bubble flows The time to stay in the washing water flow path is shortened. As a result, the possibility that the microbubbles dispersed in the tap water will coalesce before the discharge is reduced, and the possibility that the bubbles are maintained until the discharge is increased.

In the washing water discharge device C, since the nozzle head 39a with the bubble mixing device 46 is detachably attached to the nozzle 39, the nozzle head 39a is removed from the nozzle 39. FIG. Thus, the inner circumferential surface of the bubble generating member 46a can be easily cleaned. Therefore, in the washing | cleaning water discharge apparatus C, repair of the bubble mixing apparatus 46 is easy.

In the washing | cleaning water discharge apparatus C, since the bubble generation member 46a is press-fitted and fixed to the nozzle head 39a, pressurized air mixes into tap water through the clearance gap of a fixed part, and an unexpected large diameter bubble is made into tap water. It can be prevented from getting mixed in.

In the washing water discharge device C, since the inner diameter of the press-fitting portion of the bubble generating member 46a is set larger than that of other portions, the inner diameter of the press-fitting portion after the press-fitting becomes the same as the inner diameter of the other portion, The occurrence of turbulent flow is prevented, and large curing by coalescence of bubbles is prevented.

In the washing water discharge device C, both ends of the bubble generating member 46a are press-fitting portions, and the inner diameter of either press-fitting portion is set larger than that of the other portion. By press-fitting both ends of the bubble generating member 46a, the bubble generating member 46a can be firmly fixed to the nozzle head 39a. Although the bubble generating member 46a is generally powder-molded, if the inner diameter of both ends of the bubble generating member 46a is made larger than the inner diameter of another site | part, due to a mold relationship, burr will generate | occur | produce on one side. Therefore, it is preferable to set the inner diameter of one end part larger than the inner diameter of another site | part.

In the washing water discharge device (C), the bubble generating member 46a is installed in the nozzle head 39a and directly below the discharge port 44 such that the downstream end of the washing water flow path formed inside is obliquely upward. Since the washing water flow path 47 downstream from the bubble generating member 46a can be extended substantially linearly, coalescing of bubbles can be prevented.

In the human body washing apparatus according to the present embodiment, the feed passage switching valve 37 and the air flow passage switching valve 41 are driven synchronously by a motor, respectively. The feeding channel switching valve 37 and the air flow channel switching valve 41 may be driven by one motor. The air pump 40 is a rolling pump, but may be a vane pump, a rotary pump, a linear pump, or the like. The heat exchanger 31 is a storage type having a small change in temperature and a temperature difference, but may be a semi-storage type that combines the advantages of a storage type and an instant type, which can be compactly and continuously tapped. In the semi-storage type, the storage portion is smaller than the conventional storage type heat exchanger, and the heater capacity is large, so that the temperature rise capability is high and the temperature gap is small as in the instant type. In the semi-storage type, a small storage portion provided downstream of the heat exchanger functions as a temperature buffer for retaining the washing water for a predetermined time in order to close the temperature gap. Semi-storage heat exchangers are also energy-saving and at the same time contribute to the usability of the local human scrubber. The air mixing rate may be controlled so that the user can arbitrarily control the feeling of use. In this case, it is preferable to be able to control the air mixing rate separately from the water strength control. A heater may be installed in the air pump 40 and heated air may be supplied to the bubble mixing apparatus 46. In this case, hot water generated in the heat exchanger 31 may be, for example, hot water of about 25 ° C. to 30 ° C., and heated air may be mixed with lukewarm water, so that the temperature of the air bubbles discharged may be about body temperature. By using warm water generated in the heat exchanger 31 as lukewarm water, for example, about 25 ° C. to 30 ° C., the thickness of the heat dissipation material installed in the heat exchanger 31 can be reduced, thereby miniaturizing the human body cleaning device. The heat exchanger 31 may be removed, and cold water and heated air may be supplied to the bubble mixing apparatus 46 to generate bubbles of hot water.

14 shows an example of the relationship between the washing water flow rate in the washing water discharge device C and the bubble diameter immediately after bubble generation. It can be seen from FIG. 14 that the generated bubble diameter can be controlled by controlling the washing water flow rate. If the washing water flow rate is large, the shear force from the washing water applied to the bubbles during production is large, so the bubbles are entrained in the washing water at the initial stage of growth and dispersed and mixed in the washing water. Therefore, if the washing water flow rate is large, the bubble diameter is small. When the washing water flow rate is constant, the generated bubble diameter increases and decreases approximately in proportion to the open hole area of the independent opening hole formed on the surface in contact with the washing water of the bubble generating member. Therefore, when the washing water flow rate is constant, the generated bubble diameter can be controlled by controlling the opening hole diameter of the independent opening hole.

15 shows an example of the relationship between the residence time of bubbles in the washing water discharge device C in the washing water flow path and the bubble growth degree. In the figure, Db indicates bubble diameter immediately after generation, and D indicates bubble diameter after retention. It can be seen from FIG. 15 that while the residence time increases, bubbles are coalesced to grow bubbles, and the bubble diameter increases. The residence time can be controlled to control the bubble diameter. By controlling the flow rate of the washing water, the residence time can be controlled to control the bubble diameter. When the washing water flow rate is small, since the washing water flow rate is small and the residence time is long, a large bubble diameter can be obtained, and a bubble which gives a soft feel can be obtained. When the flow rate of the washing water is large, the flow rate of the washing water is large and the residence time is short. Therefore, a small bubble diameter can be obtained, and a bubble which gives a hard feel can be obtained.

E. Fourth Example

A washing water discharge device according to a fourth embodiment of the present invention will be described.

As shown in FIG. 16, FIG. 17, the washing | cleaning water discharge apparatus D which concerns on a present Example is equipped with the washing water discharge nozzle 60. As shown in FIG. The front end of the washing water discharge nozzle 60 constitutes a detachable nozzle head 60a. A first discharge port 61 and a second discharge port 62 are formed in the nozzle head 60a. A washing water flow path 63 connected to the first discharge port 61 and a washing water flow path 64 connected to the second discharge port 62 are formed in the nozzle head 60a of the cleaning water discharge nozzle 60. . The cross-sectional area of the washing water flow path 64 is set to a value larger than that of the washing water flow path 63. A movable bubble mixing device 65 is provided at the base of the washing water discharge nozzle 60. The bubble mixing apparatus 65 is provided with the cylindrical bubble generating member 65a which consists of a porous material which forms the washing | cleaning water flow path. A large number of independent opening holes are formed in the inner circumferential surface of the bubble generating member 65a. The cross-sectional area of the washing water flow path in the bubble generating member 65a gradually increases from the upstream end to the downstream end. The pressure chamber 65b is formed around the bubble generating member 65a. The bubble mixing apparatus 65 is provided with the nipple 66 connected to the upstream end of the washing | cleaning water flow path in the bubble generation member 65a, and the reverse L type nipple 67 which communicates with the pressure chamber 65b. The nipple 66 is connected to a source of washing water through a flexible tube (not shown), and the nipple 67 is connected to a pressurized air source through a flexible tube (not shown). The bubble mixing apparatus 65 is slidably accommodated in the guide member 68 fixed to the base of the washing water discharge nozzle 60. The opening hole 69 formed in the guide member 68 communicates with the washing water flow path 63, and the opening hole 70 communicates with the washing water flow path 64. An engaging portion 71 of a drive belt, not shown, is formed in the guide member 68. In the guide member 68, a spring 72 for biasing the bubble mixing apparatus 65 is provided. The washing water discharge device D is inserted into a human body washing device attached to a toilet not shown.

In the washing water discharge device D, the washing water is supplied to the bubble mixing device 65 from a washing water supply source (not shown), and pressurized air is supplied to the bubble mixing device 65 from a pressurized air supply source (not shown). A large amount of fine bubbles are dispersed and mixed substantially uniformly through a plurality of independent open holes formed in the inner circumferential surface of the bubble generating member 65a in the washing water flowing through the washing water flow path formed by the inner circumferential surface of the bubble generating member 65a. Is formed. As shown in FIG. 16, the generated bubbles are discharged from the first discharge port 61 through the opening hole 69 of the guide member 68 and the washing water flow passage 63.

When the drive belt (not shown) is operated to press the engaging portion 71 of the guide member 68, the washing water discharge nozzle 60 moves in the direction indicated by the arrow in FIG. 17, that is, in the direction of the nozzle head 60a. . When the washing water discharge nozzle 60 moves in the direction of the nozzle head 60a, the nipple 67 is engaged with the fixing protrusion member 73, and the bubble mixing device 65 is opposed to the biasing force of the spring 72. Move. As a result, as can be seen from FIG. 17, the washing water flow path formed by the inner circumferential surface of the bubble generating member 65a communicates with the opening hole 70 of the guide member 68. As can be seen in FIG. 17, the bubbles generated by the bubble mixing apparatus 65 pass through the opening hole 70 and the washing water flow path 64 of the guide member 68 and are separated from the second discharge port 62. Discharged.

Since the cross-sectional area of the washing water flow path 64 is larger than the cross-sectional area of the washing water flow path 63, when the flow rates of the washing water flowing both are approximately equal, the flow rate of the washing water flowing through the washing water flow path 64 is the washing water. It is smaller than the flow velocity of the washing water flowing through the flow path (63). Since the washing water flow path 63 and the washing water flow path 64 have substantially the same length, the time for the bubbles to stay in the washing water flow path 64 is longer than the time for the bubbles to stay in the washing water flow path 63. As a result, the diameter of the bubbles contained in the bubbles discharged from the discharge port 62 is larger than the diameter of the bubbles included in the bubbles discharged from the discharge port 61, and the bubbles discharged from the discharge port 62 are discharge holes 61. Compared to the bubbles discharged from the filament, a soft cleaning feeling is produced. When the discharge port 61 is used for washing the buttocks and the discharge port 62 is used for the bidet, and the air bubbles are selectively supplied to any one of the discharge ports through the flow channel switching means as described above, the human local washing apparatus Usability is improved.

When the supply of air is stopped during the operation of the washing water discharge device D, a part of the washing water is forced through the fine holes of the bubble generating member 65a and the air by the pressure due to the water penetration pressure and the pipe resistance. Since a small amount of pressurized air is supplied to the pressure chamber even when discharging the washing water containing no bubbles, a small amount of air is introduced into the washing water through the bubble generating member 65a. It is preferable to comprise so that it may be incorporated. After the discharge of the washing water is stopped, only air is discharged for a predetermined time in order to remove the remaining water in the washing water discharge nozzle 60, so that water droplets and dust adhering to the periphery of the discharge ports 61 and 62 can also be removed.

An example of the bubble pump effect obtained by the washing | cleaning water discharge apparatus D is shown in FIG. In the figure, Et / Ew shows the energy amplification effect. Et represents the output energy in the downstream region immediately near the bubble mixing apparatus 65 of the bubble stream, and Ew is the energy of the washing water in the upstream region immediately near the bubble mixing apparatus 65. The efficiency is expressed as Et / (Ew + Ea), which is the total efficiency as the limiting pump with the output energy Et at all input energy. Ea is the energy of entrained air. Et, Ew, and Ea are represented by the following formulas.

E _w = P _w Q _w + (ρ _w / 2) Q _w V _w ²

E _t = P _t Q _t + (ρ _t / 2) Q _t V _t ²

E _a = P _a Q _a

In the above equation, P denotes pressure, Q denotes volume flow rate, ρ denotes density, and V denotes velocity, and the subscript w denotes the washing water at the time of no gas mixing in the upstream region immediately adjacent to the bubble mixing apparatus 65. , Subscript t denotes washing water which has become two-phase upstream after gas mixing in a downstream region immediately near the bubble mixing apparatus 65, subscript a denotes air, and Pa denotes the bubble mixing apparatus 65. Air inlet pressure minus through pressure loss. When a large amount of fine bubbles are produced and mixed and mixed with the washing water into the flowing water at about the same time, the mixed bubbles function as a bubble pump and immediately increase the washing water to increase the energy of the washing water. If the bubble diameter of the mixed bubble is small, the bubble rigidity is high, and since unnecessary deformation and vibration are not caused in the washing water, there is little energy loss due to the bubble in the washing water.

When the bubble mixing apparatus 65 which functions as a bubble pump is used, it becomes possible to install a human body washing | cleaning apparatus with a low energy consumption in the place with low water pressure, such as the upper floor of a high-rise mansion and the second floor of a general household. Even in the case where a water pump or the like is provided so as to install a local human washing apparatus in a place where the water pressure is low, the bubble mixing apparatus 65 can be used to reduce the size of the pump. When a water pump is connected to the water pipe for pump up, a reservoir opened to the atmosphere between the water pipe and the water pump to prevent backflow of sewage by the operation of the water pump affecting the water pressure. Need to install Since the bubble pump constituted by the bubble mixing device 65 has a completely different operating principle from the conventional water pump, and does not affect the water pressure even when the bubble pump is operated, it is possible to connect directly to the water pipe. When the human local washing apparatus is installed in a place where the water pressure is low, the human local washing apparatus can be greatly simplified.

When the bubble mixing device 65 having the bubble pump function is used, the water pressure of tap water can be lowered, so that the pressure required for air mixing can also be lowered.

When using the bubble mixing apparatus 65 in the area | region where water hardness is high, there exists a possibility that the independent opening hole formed in the inner peripheral surface of the bubble generation member 65a may be blocked by compounds of hardness components, such as calcium carbonate. Occlusion of independent open holes reduces the amount of entrained air flow. When using the bubble mixing apparatus 65 in the area | region where water hardness is high, it is preferable to form the normally closed opening hole for flowing an acidic aqueous solution to the washing water flow path upstream rather than the bubble mixing apparatus 65. . By flowing an acidic aqueous solution, the compound of the hardness component adhering to the inner peripheral surface of the bubble generating member 65a can be easily dissolved and removed. An acidic aqueous solution generating device may be provided so that an acidic aqueous solution can be generated when needed. The acidic aqueous solution generating device may be an apparatus for generating an acidic product by electrolyzing the washing water, or a device for introducing an acidic substance when dissolved in the washing water. The acidic aqueous solution generating device may be operated at predetermined time intervals to clean the inner circumferential surface of the bubble generating member 65a, or may be configured to be operated by the user as necessary.

19 shows a bubble generating member 65a 'in which independent openings are formed by nylon mesh. In the bubble generating member 65a ', a nylon mesh 74 having a mesh-shaped independent opening is heated and welded to a tubular and lattice-like support 75. The bubble generating member 65a 'has sufficient strength. The open hole shape of the mesh 74 can be arbitrarily adjusted by changing the thickness, spacing, and orientation of the fibers to be used.

F. Preventing Function Deterioration of Bubble-Producing Members

Precipitation of calcium carbonate to the inner circumferential surface of the bubble generating members 3a, 13a, 46a, 65a in the washing water discharge devices A, B, C, and D is suppressed, and the bubble generating members 3a, 13a, 46a are suppressed. , 65a) was examined on the basis of the test measures to suppress the functional decline over time.

(1) Confirmation of principal components of scale

The tap water was passed through the cylindrical porous body, pressurized air was supplied around the porous body, bubbles were mixed into the tap water flowing through the porous body, and the tap water containing the bubbles was discharged from the porous body. As a result of continued water flow, scale was attached to the surface of the flow path of the porous body to prevent air bubbles from entering the tap water. X-ray diffraction confirmed that the main component of the scale was calcium carbonate.

(2) Water flow test not to mix bubble

Half of the length of the microtube of the acrylic porous body was immersed in the following three kinds of coating agents, lifted up, and dried.

Half of the length of the microporous polyethylene porous body was immersed in the following three types of coating agents, lifted up, and dried.

① Coating agent which mixed acryl and silicone {Acryl main Q166 by Mitsui Toatsu Chemical Co., Ltd., silicone FS710 by fats and oils of Japan, Mitsui Toatsu Chemical Co., Ltd. hardener P53-70S, toluene solvent Mixed. The formulation was made 1 weight percent of hardener based on 5 weight percent of the subject. Silicone and solvent added appropriately}.

(2) A glass car (manufactured by Nihon Synthetic Rubber Co., Ltd.) and an isopropyl alcohol solvent were mixed, in which an alkyl polysiloxane was a main component. The formulation was made into 1 weight% of B agent with respect to 3weight% of agent A. Isopropyl alcohol solvent added appropriate amount}.

(3) The coating agent {GO-100-SX (the subject, hardening | curing agent) made by Nikko Corporation) which hardened at normal temperature and turns into glass was used. The formulation was made 1 weight percent of the curing agent per 10 weight percent of the subject}.

The tap water whose hardness was adjusted to 300 was circulated and passed through at a flow rate of 0.5 dm ³ / min without mixing bubbles in the microtubes of the acrylic porous body and the microtubes of the polyethylene porous body.

After the water passage was continued for a predetermined time, the flow path surface of the microtube of the acrylic porous body and the microtube of the polyethylene porous body was visually observed and observed. The test results are shown in FIG. 20.

20 shows the following.

(1) For the microtube of the acrylic porous body, a coating agent mixed with acrylic and silicone, and a coating agent that is cured at room temperature and becomes glass is effective for suppressing precipitation of calcium carbonate.

(2) For the microporous polyethylene porous body, a coating agent mixed with acrylic and silicone and a coating agent composed mainly of alkyl polysiloxane are effective for suppressing precipitation of calcium carbonate.

③ The coating agent which mixed acrylic and silicone, the coating agent whose main component is alkyl polysiloxane, and the coating agent which hardens at room temperature and becomes glass contains the component which has a siloxane bond (Si-0 bond). Therefore, the coating agent containing the component which has a siloxane bond is effective in suppressing precipitation of calcium carbonate.

(3) Water flow test that mixed bubbles

① Confirmation test of the effect of water flow form on the precipitation of calcium carbonate

Capillary tube made of polyethylene porous material is not a surface treatment (outer diameter × inside diameter × length = 8mm × 2mm × 10mm, the average fine hole diameter = 26㎛) 1dm the air into the housing, and the pressure chamber through an air pump into a pressure chamber ³ While supplying at a flow rate of / min, tap water having a hardness of 300 was passed through the microtube of the polyethylene porous body at a flow rate of 0.5dm ³ / min, and bubbles were discharged from the microtube of the polyethylene porous body. The test apparatus is shown in FIG.

In the case of continuous water supply, the case of repeating water supply stoppage (continue supply of air) for 5 seconds after water supply for 1 minute and the case of repeating water supply stoppage (continue supply of air) for 30 seconds after water supply for 1 minute, the pressure The pressure rise over time of the air entering the seal was measured. The test results are shown in FIG. 22.

In FIG. 22, when the water flow to the microtubules of the polyethylene porous material is stopped intermittently, it can be seen that the rate of pressure rise of the air flowing into the pressure chamber decreases as compared to the case of continuous water flow. It can be seen that precipitation of calcium carbonate on the surface of the flow path of the tubule is suppressed. It is thought that the scale adhered to the flow path surface is peeled off by the air blown out from the minute hole on the flow path surface at the time of stopping the passage. In addition, it can be seen that there is no significant difference in the effect of inhibiting the precipitation of calcium carbonate when the water supply stoppage is repeated for 5 seconds after water passage for 1 minute and the water supply stoppage is repeated for 30 seconds after water passage for 1 minute.

While tapping air into the pressure chamber at a flow rate of ¹ dm ³ / min through the air pump using the test apparatus of FIG. 21, tap water having a hardness of 150 was adjusted at a flow rate of 0.5 dm ³ / min to the microporous polyethylene porous body. Water flow was carried out and the foam | bubble was discharged from the microtube of a polyethylene porous body.

In the case of continuous water flow and in the case where water flow stoppage was repeated for 5 seconds after water flow for 1 minute, the pressure rise over time of the air flowing into the pressure chamber was measured. Test results are shown in FIG.

Even if the hardness of the tap water passed through FIG. 23 changes, it can be seen that by intermittently stopping the water passage of the polyethylene porous body to the microtubules, the precipitation of calcium carbonate on the surface of the flow path of the microporous polyethylene porous body is suppressed.

② Test to confirm calcium carbonate precipitation inhibiting effect of coating agent

A mixture of acrylic, silicone, and fluororesin using a test apparatus as shown in FIG. 21 (acrylic main body Q166 manufactured by Mitsui Toatsu Chemical Co., Ltd., silicone FS710 manufactured by Nippon Oil Industries, Ltd., fluorine F200 manufactured by Nippon Oil Industries, Ltd.) Toaz Chemical Co., Ltd. hardener P53-70S and the toluene solvent were mixed. The formulation was made 1 weight percent of hardener based on 5 weight percent of the subject. The microtube (outer diameter X inner diameter X length = 8mmx2mm * 10mm, average micropore diameter = 40micrometer) of the acrylic porous body which apply | coated appropriate | suitable amount of silicone, fluorine, and solvent} was stored in the pressure chamber, While supplying air to the pressure chamber through the pump at a flow rate of ¹ dm ³ / min, the tap water with a hardness of 3OO was passed through the microtube of the acrylic porous body at a flow rate of 0.5 dm ³ / min, and the Bubbles were discharged from the tubules. After the passage of water for 1 minute and the passage of water for 5 seconds was repeated, the pressure rise over time of the air flowing into the pressure chamber was measured. The test results are shown in FIG. The result of having performed the same test using the microtube of the acryl porous body of the same dimension not surface-treated in FIG. 24 is shown together.

In FIG. 24, surface treatment is carried out using a mixture of acrylic, silicone and fluorine resins, whereby the rate of increase in pressure of the air flowing into the pressure chamber is lowered, and further, precipitation of calcium carbonate onto the inner surface of the microtube of the acrylic porous body. It can be seen that this is suppressed.

A mixture of acrylic and silicone (acrylic main body Q166 manufactured by Mitsui Toatsu Chemical Co., Ltd., silicone FS710 manufactured by Nippon Oil Industries, Ltd., curing agent P53-70S manufactured by Mitsui Toatsu Chemical Co., Ltd.); Toluene solvent was mixed. The formulation was made 1 weight percent of hardener based on 5 weight percent of the subject. The blending of silicone was made into three types of 0 weight%, 0.3 weight%, and 3 weight%. Solvent was added to the inner surface of the microporous tube (outer diameter × inner diameter × length = 8mm × 2mm × 10mm, average micropore diameter = 36㎛) of the acrylic porous body coated on the inner surface in a pressure chamber, and the pressure While supplying air to the chamber at a flow rate of ¹ dm ³ / min, tap water having a hardness of 3OO was passed through the microtube of the acrylic porous body at a flow rate of 0.5 dm ³ / min, and air bubbles flow from the microtube of the acrylic porous body. Was discharged. After the passage of water for 1 minute and the passage of water for 5 seconds was repeated, the pressure rise over time of the air flowing into the pressure chamber was measured. The test results are shown in FIG. 25.

It can be seen from FIG. 25 that even when the surface treatment is performed using a mixture of acrylic and silicone containing no fluorine resin, precipitation of calcium carbonate to the inner surface of the microtube of the acrylic porous body is suppressed. In addition, when using the mixture of acryl and silicone which does not contain a fluororesin, it turns out that it is effective to make silicon distribution 0.3 weight%.

The coating agent {GO-100-SX (made by Nikko Co., Ltd. make), which hardens at normal temperature and becomes glass using the test apparatus like FIG. 21 was used. The compounding was made into 1 weight percent of hardener based on 10 weight percent of the main material), and the microtube (outer diameter x inner diameter x length = 8 mm x 2 mm x 10 mm, average fine pore diameter = 30 µm) of the acrylic porous body coated on the inner surface was pressurized. While storing in the inside, and supplying air to the pressure chamber through the air pump at a flow rate of 1dm ³ / min, the tap water adjusted to a hardness of 150 to the micro-tubules of the acrylic porous body is passed through at a flow rate of 0.5dm ³ / min, Bubbles were discharged from the microtubes of the acrylic porous body. After the passage of water for 1 minute and the passage of water for 5 seconds was repeated, the pressure rise over time of the air flowing into the pressure chamber was measured. The test results are shown in FIG. 26. 26 shows the result of the same test using the microtube of the acryl porous body of the same dimension which did not surface-treat.

In FIG. 26, it can be seen that precipitation of calcium carbonate to the inner surface of the microtube of the acrylic porous body is suppressed by performing a surface treatment using a coating agent that is cured at room temperature and becomes glass.

A mixture of acrylic and silicone (acrylic main body Q166 manufactured by Mitsui Toatsu Chemical Co., Ltd., silicone FS710 manufactured by Nippon Oil Industries, Ltd., curing agent P53-70S manufactured by Mitsui Toatsu Chemical Co., Ltd.); Toluene solvent was mixed. The formulation was made 1 weight percent of hardener based on 5 weight percent of the subject. The formulation of silicone was made into 0.3 weight%. The appropriate amount of solvent was added to the inner surface of the polyethylene porous body (outer diameter x inner diameter x length = 8 mm x 2 mm x 10 mm, average micropore diameter = 25 μm) was stored in the pressure chamber, and the pressure was While supplying air to the chamber at a flow rate of ¹ dm ³ / min, tap water having a hardness of 150 was passed through the microtube of the polyethylene porous body at a flow rate of 0.5 dm ³ / min, and air bubbles were discharged from the microtube of the polyethylene porous body. Discharged. After passing through the water for 1 minute, the water flow was stopped for 5 seconds, and the pressure rise of the air flowing into the pressure chamber was measured. Test results are shown in FIG. 27.

It can be seen from FIG. 27 that the surface treatment using a mixture of acrylic and silicone suppresses the precipitation of calcium carbonate to the inner surface of the microtube of the polyethylene porous body.

Using the test apparatus as shown in Fig. 21, a coating agent (produced by Nihon Synthetic Rubber Co., Ltd., a glass car (manufactured by A and B) and an isopropyl alcohol solvent) containing alkyl polysiloxane as a main component was mixed. The formulation was made into 1 weight% of B agent with respect to 3weight% of agent A. Isopropyl alcohol solvent was added appropriately}, the microporous tube (outer diameter x inner diameter x length = 8 mm x 2 mm x 10 mm, average micropore diameter = 25 to 300 mu m) of the polyethylene porous body coated on the inner surface was stored in a pressure chamber. While supplying air to the pressure chamber through the air pump at a flow rate of 1dm ³ / min, the tap water with a hardness of 150 and 300 was passed through the polyethylene microporous tube at a flow rate of 0.5dm ³ / min, and the polyethylene Bubbles were discharged from the microtubules of the porous body. After the passage of water for 1 minute and the passage of water for 5 seconds was repeated, the pressure rise over time of the air flowing into the pressure chamber was measured. Test results for tap water with a hardness of 150 are shown in FIG. 28, and test results for tap water with a hardness of 300 are shown in FIG. 29.

It can be seen from FIG. 28 and FIG. 29 that the precipitation of calcium carbonate on the inner surface of the microtube of the polyethylene porous body is suppressed by surface treatment using the coating agent of which the alkyl polysiloxane is a main component.

G. Application of the washing water discharge device to various devices

G-1 Application to Local Body Wash

You may apply the washing | cleaning water discharge apparatus A shown in FIG. 5 to the human body washing | cleaning apparatus which attaches to a toilet seat. In the human body washing device in which the washing water discharge device A is assembled, an opening / closing valve is provided in the middle of the pipe 2 upstream from the flow rate valve 5, and the flow rate valve 5 and the bubble mixing device 3 are provided. A heating device for heating the washing water is provided in the middle of the pipe 2 between the pipes), and a driving device for advancing and retracting the washing water nozzle 1 is provided. In such a human body washing apparatus, by discharging bubbles, a high cleaning power can be obtained, a soft cleaning feeling can be obtained, and a high water saving effect can be obtained.

In the human body washing apparatus including the washing water discharge device A, the control device 4e may be variably controlled to apply the voltage of the air pump 4c. By variably controlling the voltage applied to the air pump 4c and variably controlling the amount of air mixing into the washing water, and further, the amount of bubble mixing, the washing power and the washing feeling of the washing water can be variably controlled. As a result, the usability of a human body washing | cleaning apparatus improves.

In the human body washing apparatus provided with the washing water discharge device (A), a pressure sensor is provided in the pipe 4a downstream of the air pump 4c, and air is supplied to the control device 4e based on the output of the pressure sensor. The voltage applied to the pump 4c may be variably controlled. Alternatively, a rotation speed detection device that detects the rotation speed of the air pump 4c may be provided, and the applied voltage of the air pump 4c may be variably controlled by the control device 4e based on the output of the rotation speed detection device. Alternatively, the air release valve may be provided in the pipe 4a downstream of the air pump 4c, and the control device 4e may be configured to control the opening and closing of the air release valve. Control the applied voltage of the air pump 4c based on the pressure in the pipe 4a downstream of the air pump 4c or control the applied voltage of the air pump 4c based on the rotation speed of the air pump 4c. Alternatively, by controlling the opening and closing of the air release valve installed in the pipe 4a downstream from the air pump 4c, the amount of air mixing into the washing water, and also the amount of bubble mixing is controlled to variably control the washing power and the washing feeling of the washing water. Can be. As a result, the usability of the human body washing unit is improved.

In the local human washing apparatus having the washing water discharge device (A), the opening and closing valve provided in the middle of the pipe (2) upstream of the constant flow valve (5) in the control device (4e) is opened at predetermined time intervals for cleaning. The washing water may flow into the water discharge device A, and the control device 4e may be driven to drive the air pump 4c at predetermined time intervals. At predetermined time intervals, the washing water flows through the washing water discharge device A, and the air pump 4c is driven to supply pressurized air to the bubble generating member 3a, thereby automatically repairing the bubble generating member 3a. Thus, the function of the local cleaning device can be maintained for a long time.

In the local human washing apparatus having the washing water discharge device (A), an on / off valve provided in the control device (4e) during the operation of the air pump (4c) in the middle of the pipe (2) upstream than the constant flow valve (5). May be intermittently closed to stop the water flow to the washing water flow passage intermittently. During the operation of the air pump 4c, the water flow to the washing water flow passage is intermittently stopped, air is discharged from the bubble generating member 3a, and the calcium adhered to the inner circumferential surface is peeled off, thereby to the surface of the flow passage of the bubble generating member 3a. Precipitation of calcium is effectively suppressed.

In the local human body washing apparatus provided with the washing water discharge device (A), after the operation switch is turned on, before the washing water discharge nozzle (1) is driven to a predetermined position, the constant flow rate valve (5) is provided to the control device (4e). The on / off valve provided in the middle of the upstream pipe 2 may be opened to allow the washing water to flow into the washing water discharge device A, or to drive the air pump 4c to the control device 4e. By performing such a preliminary operation, it is possible to reliably discharge bubbles from the washing water discharge nozzle 1 moved to a predetermined position.

In the human body washing apparatus provided with the washing water discharge device A, a volatile component mixing device may be connected in the middle of the pipe 4a downstream from the air pump 4c. Usability of a human body washing | cleaning apparatus improves by mixing volatile components, such as a deodorant and a fragrance | flavor, into the gas in the bubble mixed with wash water.

Application to G-2 hot water supply device

The washing water discharge device A shown in FIG. 5 may be applied to the hot water supply device. As shown in FIG. 30, the flow rate sensor 80, the water temperature sensor 81, the water heating device 82, the hot water sensor 83, and the water supply are sequentially flowed from the upstream to the downstream in the piping 2 The mixing device 84, the mixing water temperature sensor 85, and the flow control valve 86 are provided. The washing water discharge device A is provided downstream of the flow control valve. The washing water discharge nozzle 1 of the washing water discharge device A constitutes a shower nozzle provided in a bathroom, a faucet mechanism, a faucet mechanism provided in a washbasin, and the like. The control device 4e of the washing water discharge device A is configured to control the operations of the water heating device 82, the hot water mixing device 84, the flow rate control valve 86, and the like.

In the hot water supply device having the above-described configuration, the controller 4e uses water based on the water supply flow rate detected by the flow rate sensor 80, the water temperature detected by the water temperature sensor 81, and the hot water detected by the hot water sensor 83. The operation of the heating device 82 is controlled to produce hot water at a desired temperature. The control device 4e controls the operation of the hot water mixing device 84 based on the hot water detected by the hot water sensor 83 and the mixed water temperature detected by the mixed water temperature sensor 85 to appropriately mix hot water and water. To produce a mixture of the appropriate temperature. The device 4e controls the operation of the flow control valve 86 to cause the mixture of the proper temperature and the proper flow rate to flow in the pipe 2. The control device 4e controls the operation of the air pump 4c of the washing water discharge device A to disperse and mix a large amount of fine bubbles in the mixture at a suitable temperature flowing through the pipe 2. Hot water bubbles are discharged from a shower nozzle provided in a bathroom, a power receiving mechanism, a power receiving mechanism provided in a washbasin, and the like, which the washing water discharge nozzle 1 of the water discharge device A constitutes. A flow rate sensor may be provided upstream immediately near the shower nozzle or upstream immediately near the power receiving device, and when hot water is discharged from the power receiving device, the air pump 4c may be stopped to discharge hot water without bubbles. .

In the hot water supply apparatus including the washing water discharge device A, the amount of hot water used decreases due to the water saving effect of the washing water discharge device A. FIG. As a result, the water heating apparatus 82 can be downsized, and furthermore, the water heater can be downsized and energy can be reduced.

Application to G-3 shower unit

You may apply the washing | cleaning water discharge apparatus A shown in FIG. 5 to a shower apparatus. In the washing water discharge device A applied to the shower device, as shown in Figs. 31 (a) and 31 (b), the washing water discharge nozzle 1 constitutes a shower nozzle, and the bubble mixing device ( 3) is provided in the washing water discharge nozzle 1. Bubble generating member (3a) is constituted of a cylindrical body (3a _1), and end plates for sealing both ends of the cylindrical body (3a ₁₎ (3a ₂₎ formed of a porous material. The cylindrical body 3a ₁ and the end plate 3a ₂ are formed with a plurality of through holes 3a ₃ . Many fine independent openings are formed in the peripheral surface of the through hole 3a ₃ formed in the cylindrical body 3a ₁ . The bubble generation member 3a is press-fitted to the washing water discharge nozzle 1. The dispersing plate 1a is detachably attached to the distal end of the washing water discharge nozzle 1. The dispersion plate 1a is formed with a plurality of discharge holes 1a ₁ communicating with the through holes 3a ₃ of the bubble generating member 3a. The pressure chamber 3b is formed around the bubble generating member 3a. The washing water discharge nozzle 1 is provided with a washing water flow passage 1b in communication with the through hole 3a ₃ of the bubble generating member 3a and an air passage 1c in communication with the pressure chamber 3b. The washing water flow path 1b is connected to the pipe 2, and the air flow path 1c is connected to the pipe 4a. The shower device has the same configuration as the hot water supply device of FIG. 30 except that the washing water discharge nozzle 1 constitutes a shower nozzle, and the bubble mixing device 3 is installed in the washing water discharge nozzle 1. Has

In the shower device, hot water and pressurized air at an appropriate temperature are supplied to the washing water discharge nozzle 1. The hot water passes through the washing water flow passage 1b and flows into the through hole 3a ₃ of the bubble generating member 3a. Pressurized air passes through the air flow path 1c and flows into the pressure chamber 3b. The pressurized air becomes a large amount of fine bubbles through the bubble generating member 3a, and is dispersed and mixed in hot water flowing through the through hole 3a ₃ . Bubbles mixed with a large amount of fine bubbles dispersed in hot water pass through the dispersion plate 1a to be discharged as a shower of bubbles.

In the shower apparatus provided with the washing | cleaning water discharge apparatus A, strong washing | cleaning power and a high water saving effect are acquired.

G-4 Application to Hair Washing Devices

You may apply the washing | cleaning water discharge apparatus A shown in FIG. 5 to a hair washing apparatus. 32 to 34, a drainage hole 90a is formed in the bottom wall of the ball 90, a plurality of shower nozzles 91 for the head and the back of the head and a plurality of shampoos are formed on the side wall of the ball 90. The nozzle 92 and the shower nozzle 93 for the front head are attached. The ball 90 is attached to a pedestal not shown. The washing | cleaning water discharge apparatus provided with the shower nozzles 91 and 93 is comprised by the washing | cleaning water discharge apparatus A applied to the shower apparatus shown to FIG. 31 (a) and FIG. 31 (b). In the washing water discharge device A applied to the hair washing apparatus, however, washing water and pressurized air are supplied to the plurality of washing water discharge nozzles. Shampoo is supplied to the shampoo nozzle 92 from the supply apparatus which is not shown in figure.

The user of this hair washing apparatus puts the back head on the ball 90 in the state which looked at. A cover (not shown) is placed on the ball 90 to cover the front head and the head. The control switch (not shown) is pressed, the shampoo liquid is discharged from the shampoo nozzle 92 to wash the hair, and the air bubbles of the washing water are discharged from the shower nozzles 91 and 93 to rinse the wound hair. Waste water is discharged from the drain hole 90a. The cover which is not shown in figure prevents scattering of shampoo liquid and washing | cleaning water during hair washing.

In the hair washing apparatus provided with the washing | cleaning water discharge apparatus A, strong washing | cleaning power and a high water saving effect can be acquired. In the hair washing apparatus having the washing water discharge device A, since a large amount of fine bubbles are dispersed and mixed in the washing water, the contact area between the washing water and the air is very large. As a result, chlorine contained in the washing water (tap water) is quickly degassed. By chlorine degassing from the washing water, damage to the hair caused by reactive chlorine is prevented. In order to accelerate the degassing of chlorine, gas such as carbon dioxide gas having a high absorption rate into water may be mixed in the washing water. Since dechlorination of chlorine is performed immediately before discharge of the washing water, there is no fear that germs will propagate in the washing water due to dechlorination of chlorine. In the case where the washing water discharge device A is applied to a washing device for washing the skin of the human body, similarly, the effect of preventing damage to the skin caused by degassing of chlorine can be obtained.

G-5 Application to Faucet Mechanism

You may apply the washing | cleaning water discharge apparatus A shown in FIG. 5 to a power receiving mechanism. In the washing water discharge device A applied to the power receiving mechanism, as shown in FIGS. 35 to 37, the washing water discharge nozzle 1 constitutes the jet head of the power receiving mechanism, and the bubble mixing device 3 is provided. Is installed in the washing water discharge nozzle 1. The washing water discharge nozzle 1 is provided with a washing water flow passage 1d in communication with the bubble generating member 3a, and an air passage 1e in communication with the pressure chamber 3b. The washing water discharge nozzle 1 is screwed to the rotatable water jetting pipe 101 of the power receiving mechanism main body 100. The washing water flow path 1d of the washing water discharge nozzle 1 is connected to the pipe 2 through a pipe (not shown) formed in the water discharge pipe 101, and the air flow path 1e of the washing water discharge nozzle 1 is It is connected to the pipe 4a via the piping which is not shown in the water discharge pipe 101. As shown in FIG. 35 to 37, the washing water discharge nozzle 1 constitutes the jet head, the bubble mixing device 3 is provided in the washing water discharge nozzle 1, the power receiving device main body Except having 100 and the water discharge pipe 101, this power receiving mechanism has the structure similar to the hot water supply apparatus of FIG.

In this power receiving mechanism, the amount of water feeding and the flow amount of air are adjusted by the operation part 100a of the power receiving mechanism main body 100.

In the power receiving mechanism including the washing water discharge device A, a strong washing power and a high water saving effect can be obtained.

G-6 application to face wash

You may apply the washing | cleaning water discharge apparatus A shown in FIG. 5 to a face washing device. The specific structure of the face washing apparatus may be the same as the hair washing apparatus of bath 32-34.

In the face-washing apparatus provided with the washing | cleaning water discharge apparatus A, strong washing | cleaning power and a high water saving effect can be acquired.

G-7 Application to Cleansing Equipment

You may apply the washing | cleaning water discharge apparatus A shown in FIG. 5 to a face-washing apparatus. The concrete constitution of the face-washing device is a flexible pipe having a downstream pipe 2 than the air mixing device 3 of the washing water discharge device A of FIG. 5, and the washing water discharge nozzle 1 is simple and easy to carry. It is sufficient that it was made into the size, and to wash face easily.

In the face-washing apparatus provided with the washing | cleaning water discharge apparatus A, a soft washing feeling and sufficient washing | cleaning power can be acquired by setting gas and liquid ratio comparatively low.

G-8 Application to the palatal cleaning device

You may apply the washing | cleaning water discharge apparatus A shown in FIG. 5 to a palate cleaning apparatus. The specific configuration of the palate cleaning is to make the piping 2 downstream from the air mixing device 3 of the washing water discharge device A of FIG. 5 as a flexible pipe, and the washing water discharge nozzle 1 is thin and simple and portable. It is good to make it easy to make a palate cleaning in size easy to do.

In the palate cleaning apparatus provided with the washing water discharge device A, a strong washing power and a high water saving effect can be obtained.

G-9 Application to Hand Washing Devices

You may apply the washing | cleaning water discharge apparatus A shown in FIG. 5 to a hand washing apparatus. The specific structure of the hand washing apparatus may be the same as that of the power receiving mechanism of FIGS. 35 to 37, or may be configured to provide a warm air discharge device in the vicinity of the power receiving mechanism of FIGS. 35 to 37 so that drying after washing may be performed.

In the hand washing apparatus provided with the washing | cleaning water discharge apparatus A, strong washing | cleaning power and a high water saving effect can be acquired.

Application to G-10 bathtub

You may apply the washing | cleaning water discharge apparatus A shown in FIG. 5 to a bathtub. The concrete constitution of the bathtub may be such that the washing water discharge nozzle 1 of the washing water discharge device A of FIG. 5 is attached to the side wall of the bathtub.

In the bathtub provided with the washing | cleaning water discharge apparatus A, a massage effect can be acquired by making a bubble hit a body.

G-11 Application to Ultrasonic Cleaning Devices

The washing water discharge device A may be applied to the ultrasonic cleaning device.

When the bubble classification impinges on the surface to be cleaned, the water between the bubbles of low density and low kinetic energy and the bubbles of high density and high kinetic energy alternately collides with the surface to be cleaned. As a result, pressure fluctuations, that is, vibrations, occur on the surface to be cleaned. Since the frequency of vibration can be controlled by changing the number of bubbles colliding per unit time, it is also possible to generate ultrasonic vibration with high cleaning power. Since the ultrasonic vibration has a short wavelength, it is possible to reach and clean dirt, for example, from wrinkles and irregularities on the surface of the human body, and the cleaning power is particularly high.

The high frequency vibration has a short wavelength and can be cleaned up to minute unevenness, but the damping of the vibration is fast and the cleaning area is small. Low frequency vibrations have long wavelengths and low local cleaning powers, but have low attenuation of vibrations and thus have large cleaning areas. The bubble diameter can be controlled based on the same amount of air, and the number of bubbles colliding with the surface to be cleaned per unit time can be controlled to control the frequency of vibration generated in the surface to be cleaned. That is, it is possible to control the range and intensity which the washing | cleaning force exerts by controlling bubble diameter. When the bubble diameter is large, the vibration frequency is low, so that a wide range can be washed without leaving a wide range. When the bubble diameter is small, the vibration frequency is high, so that local strong dirt can be dropped. In addition, since the attenuation is high when the vibration frequency is high, vibration is attenuated on the surface of the human body, so that the stimulation on the surface of the skin is strongly felt, and when the vibration frequency is low, the stimulation on the skin surface can be weakened. The frequency range of about 5Hz to 30Hz is very suitable because it roughly matches the frequency of the free vibration near the skin surface of the human body and gives a high amount of massage effect with a small amount of washing water.

H. A washing water discharge device including the bubble crushing device.

In the washing water discharge apparatus according to the above embodiment, the bubble generation member made of a porous material was used to generate fine bubbles and to disperse them into the washing water. However, after mixing the bubbles into the washing water, the mixed bubbles were mixed. It may be crushed and refined.

As shown in FIG. 38, in the washing | cleaning water discharge apparatus E, the constant flow valve 111, the bubble mixing apparatus 111, in order from the upstream in the middle of the piping 110 which forms a washing water flow path, The bubble crushing apparatus 113 is attached, and the washing | cleaning water discharge nozzle 114 is attached to the downstream end of the piping 110. As shown in FIG.

The bubble mixing apparatus 112 is comprised by the piping 112a which forms the washing | cleaning water flow path, and the microtube 12b which opens on the inner surface of the side wall of the piping 112a substantially perpendicular to the piping 112a.

As shown in FIG. 39 (a), the bubble crushing apparatus 113 includes a pipe 113a for forming a washing water flow path and a baffle plate 113b having a single opening 113b ₁ attached to the pipe 113a. 39 (b) or a baffle plate 113c having a pipe 113a for forming a washing water flow path and a plurality of openings 113c ₁ attached to the pipe 113a. (C), or as shown in FIG.39 (c), it is comprised by the piping 113a which forms a washing | cleaning water flow path, and the mesh 113d attached in the piping 113a. The mesh 113d is formed by stacking a plurality of woven and nonwoven fabrics of synthetic resin fibers and metal fibers.

The forced air supply device 115 including the air pump 115a is connected to the microtubule 112b of the bubble mixing device 112.

In the washing water discharge device E, the pressurized air supplied from the forced air supply device 115 is mixed into the washing water flowing in the pipe 112a through the microtube 112b. Since the microtubules 112b open on the inner surface of the side wall of the pipe 112a, bubbles generated at the ends of the microtubules 112b grow in a direction substantially perpendicular to the washing water flow. As a result, the bubble receives a shear force from the washing water flowing through the pipe 112a, and leaves the end of the microtubule 112b at the initial stage of growth to entrain into the washing water. Therefore, bubbles of relatively small diameter are mixed in the washing water. When the washing water into which the small diameter bubbles are passed passes through the opening 113b ₁ of the baffle plate 113b of the bubble crushing device 113, or when the washing water into which the small diameter bubbles are mixed is the blocking plate of the bubble crushing device 113 ( When passing through the opening 113c ₁ of 113c), the cross-sectional area of the flow path decreases, the flow velocity of the washing water increases, the shear force from the washing water applied to the small-diameter bubbles increases, and the small-sized bubbles are crushed into fine bubbles. . When the washing water in which the small diameter bubbles are mixed passes through the mesh 113d of the bubble crushing device 113, the small diameter bubbles are broken by the mesh 113d to form fine bubbles. Bubbles of the washing water in which a large amount of fine bubbles are dispersed and mixed are discharged from the washing water discharge nozzle 114. By discharging bubbles of the washing water, the washing power of the washing water increases, and a water saving effect can be obtained.

According to the present invention, there is provided a washing water discharge device capable of discharging bubbles to increase the washing power of the washing water, to realize a soft washing feeling, and to realize a great saving water.

Claims (55)

A washing water discharge means, a water supply means for supplying the washing water to the washing water discharge means, and bubble mixing means for mixing the bubbles into the washing water flowing through the washing water flow path, and bubbles having a large amount of fine bubbles dispersed in the washing water. Washing water discharge device characterized in that for discharging the flow. Washing water discharge means, water supply means for supplying the washing water to the washing water discharge means, and bubble mixing means for generating a large amount of fine bubbles while preventing coalescence between the bubbles and dispersing and mixing them in the washing water flowing through the washing water flow path. And discharging bubbles in which a large amount of fine bubbles are dispersed in the washing water. The washing water discharge means, the water supply means for supplying the washing water to the washing water discharge means, and a bubble for generating a large amount of fine bubbles while preventing the coalescing of the bubbles from being dispersed and mixed into the washing water flowing through the washing water flow path substantially uniformly. And a mixing means, for discharging bubbles in which a large amount of fine bubbles are dispersed substantially uniformly in the washing water. A washing water discharge means, a water supply means for supplying the washing water to the washing water discharge means, and bubble mixing means for generating bubbles and mixing the bubbles in the washing water flowing through the washing water flow path; immediately the washing water of the energy in the upstream zone of a close E _w La, and the washing water of the energy of the bubble forming unit immediately downstream region of close when hayeoteul E _t d, the washing water, characterized in that E _w <E _t Discharge device. Washing water discharge means, water supply means for supplying washing water to the washing water discharge means, bubble mixing means for mixing bubbles into the washing water flowing through the washing water flow path, and bubble crushing means for crushing the mixed bubbles into fine bubbles; And discharging bubbles in which a large amount of fine bubbles are dispersed in the washing water. The washing water discharge device according to any one of claims 1 to 5, further comprising a forced air supply means for forcibly supplying gas to the bubble mixing means. The washing water discharge device according to any one of claims 1 to 6, wherein the average diameter of the fine bubbles in the bubbles is 100 µm to 1000 µm. The washing water discharge device according to any one of claims 1 to 7, wherein a ratio of the volume flow rate of the gas mixed into the washing water and the volume flow rate of the washing water is 0.5 to 4.0. The cross-sectional area of the downstream area | region is set larger than the projected area of the sphere which has a diameter equal to the average diameter of a mixed bubble, rather than the bubble mixing part and the bubble mixing part of a washing | cleaning water flow path, The cross-sectional area of the downstream region is set to be equal to or greater than the cross-sectional area of the bubble mixing portion than the bubble mixing portion of the washing water flow passage. The washing water discharge device according to any one of claims 1 to 9, wherein a region downstream from the bubble mixing portion of the washing water flow path extends substantially linearly. The washing water discharge device according to any one of claims 1 to 10, wherein bubble mixing means is provided in the washing water discharge means. 12. The washing water discharge device according to claim 11, wherein the bubble mixing means is provided in the vicinity of the washing water discharge port of the washing water discharge means. The washing water discharge device according to claim 12, wherein a portion near the washing water discharge port of the washing water discharge means is detachably attached to another portion. 14. The washing water discharging device according to any one of claims 1 to 13, wherein the bubble mixing means includes a bubble generating member having a plurality of independent opening holes formed on a surface of the foam mixing means in contact with the washing water flowing in the washing water flow path. . 15. The washing water discharge device according to claim 14, wherein the independent opening holes are arranged regularly in a lattice shape. The washing water discharge device according to any one of claims 1 to 13, wherein the bubble mixing means includes a bubble generating member having a mesh structure on a surface of the bubble mixing means in contact with the washing water flowing through the washing water flow path. The apparatus for discharging water according to claim 14 or 15, wherein the bubble generating member is an aggregate of substantially spherical particles. 18. The washing water discharge apparatus according to claim 17, wherein the average particle diameter of the substantially spherical particles is 50 µm to 300 µm. 18. The washing water discharge apparatus according to claim 17, wherein the gap between the particles having a substantially particulate shape is 50 µm to 300 µm. 20. The washing water discharge apparatus according to any one of claims 17 to 19, wherein the filling rate of the substantially spherical particles is 70% or more. The washing water discharge device according to claim 14 or 15, wherein the bubble generating member is a heat-molded body of a heat-melt powder. The washing water discharge device according to any one of claims 14 to 21, wherein a surface of the bubble generating member that is in contact with the washing water extends coincident with the peripheral wall of the washing water flow path. The cleaning water discharge device according to any one of claims 14 to 22, wherein the bubble generating member is a cylindrical porous body constituting the cleaning water flow path. The cleaning water discharge device according to claim 23, wherein a gas flow path is formed around the cylindrical porous body. The washing water discharge device according to claim 23 or 24, wherein the cross-sectional area of the washing water flow path in the cylindrical porous body is constant or gradually enlarged from the upstream end to the downstream end. The washing water discharge device according to any one of claims 23 to 25, wherein the cylindrical porous body is press-fitted and fixed to the washing water discharge means. The washing water discharge device according to claim 26, wherein an inner diameter of the press-fitting portion of the cylindrical porous body is set larger than an inner diameter of another portion. The washing water discharge device according to claim 27, wherein both ends of the cylindrical porous body are press-fitting portions, and an inner diameter of one press-fitting portion is set larger than an inner diameter of another portion. 29. The washing water discharge device according to any one of claims 14 to 28, wherein all or part of the bubble generating member is made of a water repellent material, or water repellent is applied to the surface of the flow path of the bubble generating member. 29. The washing water discharge device according to any one of claims 14 to 28, wherein all or part of the bubble generating member is made of a hydrophilic material or hydrophilic treatment is performed on the surface of the flow path of the bubble generating member. The cleaning water discharge device according to any one of claims 14 to 28, wherein the surface of the flow path of the bubble generating member is coated with a surface treating agent that suppresses the precipitation of calcium. 32. The washing water discharging device according to claim 31, wherein the component of the surface treating agent contains a siloxane bond. The cleaning water discharge device according to claim 31, wherein the components of the surface treating agent contain acrylic and silicone. 32. The washing water discharging device according to claim 31, wherein the bubble generating member is a porous polyethylene body, and the component of the surface treating agent contains an alkyl polysiloxane. The cleaning water discharge device according to claim 31, wherein the bubble generating member is an acrylic porous body, and the component of the surface treating agent contains a room temperature cured glass. 36. A washing water discharge device according to any one of claims 1 to 35, comprising solute concentration control means for dissolving the solute to a predetermined concentration in the washing water. The washing water discharge device according to claim 6, further comprising a water supply control means for intermittently stopping the water supply of the washing water to the washing water flow path during the operation of the forced air supply means. 38. The water supply means according to any one of claims 6 to 37, wherein the water supply means has a washing water tank for storing the washing water, and the forced air supply means forcibly supplies the bubble mixing means, while forcibly supplying and washing the washing water tank. Washing water discharging device, characterized in that to pressurize the water to discharge the washing water from the washing water tank. The washing water discharge device according to claim 38, wherein a pressure adjustment valve is provided in a pipe connecting the forced air supply means and the washing water tank and / or a pipe connecting the forced air supply means and the bubble mixing means. A washing water discharge device according to claim 38 or 39, wherein the dimensions, weight, and power consumption are set to values suitable for carrying. The human body washing | cleaning apparatus provided with the washing water discharge apparatus in any one of Claims 1-40. 42. A human local cleaning comprising the washing water discharge device according to any one of claims 6 and 37 to 40, comprising a control device for driving the water supply means and the forced air supply means at predetermined time intervals. Device. 43. The bubble mixing means according to any one of claims 41 to 42, wherein the bubble mixing means includes a bubble generating member having a plurality of independent open holes formed on a surface in contact with the washing water flowing in the washing water flow path, and the bubble generating member is a washing water flow path. And a cylindrical porous body constituting the cylindrical body, wherein the cylindrical porous body is disposed in the washing water discharge means and in the vicinity of the washing water discharge port and obliquely facing the downstream end upward. The human body washing apparatus according to any one of claims 41 to 43, further comprising volatile component mixing means for incorporating a volatile component into a gas supplied to the bubble mixing portion of the washing water flow path. 45. The washing water discharge means according to any one of claims 41 to 44, wherein the washing water discharge means includes a plurality of washing water discharge ports, and the bubbles selectively flow to any one of the plurality of washing water discharge ports through the flow path switching means. The local human body washing apparatus. A shower device comprising the washing water discharge device according to any one of claims 1 to 40. The washing | cleaning water discharge apparatus in any one of Claims 1-40 is provided, The hair washing apparatus characterized by the above-mentioned. A face wash apparatus comprising the washing water discharge device according to any one of claims 1 to 40. The washing | cleaning water discharge apparatus in any one of Claims 1-40 is provided, The face-washing apparatus characterized by the above-mentioned. The palatal washing apparatus provided with the washing | cleaning water discharge apparatus in any one of Claims 1-40. A hand washing device comprising the washing water discharge device according to any one of claims 1 to 40. A power receiving device, comprising the washing water discharge device according to any one of claims 1 to 40. A bath comprising the washing water discharge device according to any one of claims 1 to 40. 40. An ultrasonic cleaning device comprising the cleaning water discharge device according to any one of claims 1 to 40. 41. A hot water supply device comprising the washing water discharge device according to any one of claims 1 to 40.