JP2007224622A - Flush toilet bowl device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flush toilet bowl device which is equipped with a small-sized minute bubble generating device that can uniformly mix gas into flushing water by a gas mixing section, and can uniformly generate minute bubbles by a minute bubble generating section. <P>SOLUTION: According to the structure of the flush toilet bowl device, an inclined peripheral surface 20 is formed on an external peripheral surface of a jet nozzle 14 protruding into a gas mixing chamber 6 so as to be inclined toward the center of a flushing water channel 3 as it goes to a downstream side. Then the gas mixing section 4 is formed by making a gas exit port 13a of a gas feeding passage 13 face a location of the gas mixing camber 6, that corresponds to a maximum diameter portion 20a of the inclined peripheral surface 20 in a flushing water flowing direction, or to a location of the gas mixing chamber 6 that is on the upstream side of the maximum diameter portion 20a of the inclined peripheral surface 20. Further a diameter restricted portion 16 of a venturi tubular channel 15 formed in the flushing water channel 3, is connected to the downstream side of the gas mixing chamber 6, and the minute bubble generating section 5 is formed of a diameter extended section 17 of the venturi tubular channel 15. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a flush toilet apparatus that mixes gas into washing water.

  Conventionally, for example, Patent Document 1 discloses a device in which a gas is mixed into the washing water to the bowl portion 2 of the flush toilet apparatus to achieve a washing effect, a water saving effect, and a silent effect of the bowl portion 2. Here, as a device for mixing a gas into cleaning water, a device using an ejector effect or a device forcibly mixing using an air pump is generally used. Since the latter apparatus is increased in size by an air pump that is a driving component, the former apparatus is preferably applied to a flush toilet apparatus in which it is difficult to secure an installation space.

For example, in the flush toilet apparatus of Patent Document 1, a gas mixing unit 4 using the ejector effect as shown in FIG. 12 is used. In the gas mixing section 4, a gas mixing chamber 6 is provided in the cleaning water flow path 3, and the gas outlet 13 a of the gas supply path 13 is disposed in the gas mixing chamber 6 so as to be substantially orthogonal to the flow direction of the cleaning water. The outlet 14a of the ejection nozzle 14 with the flow path diameter through which the wash water flows is formed in the upstream chamber wall of the gas mixing chamber 6 so as to be opened. According to the gas mixing unit 4, a negative pressure is generated in the gas mixing chamber 6 by the cleaning water ejected from the outlet 14 a of the ejection nozzle 14, and gas is introduced into the gas mixing chamber 6 from the gas outlet 13 a of the gas supply path 13 by this negative pressure. Flows in, and this gas is mixed into the washing water ejected from the outlet 14 a of the ejection nozzle 14. Specifically, since the gas outlet 13a of the gas supply path 13 is disposed so as to directly face the side surface of the cleaning water ejected from the outlet 14a of the ejection nozzle 14, the gas is substantially the gas outlet 13a of the gas supply path 13. Is mixed into the cleaning water from the side surface portion of the cleaning water opposite to (arrow B). However, the gas mixed in this way is mixed in the washing water as a large bubble with a bias, and there is a problem that the gas cannot be mixed substantially evenly during the cleaning.
JP 2001-279787 A

  By the way, the present applicant has advanced the research on the effect of the fine bubbles contained in the water and the technology relating to the generation of the fine bubbles. For example, the shear force is applied to the bubbles by applying pressure to the washing water mixed with the bubble-like gas. It has been found that a technique for generating fine bubbles by miniaturizing the bubbles and an effect that the fine bubbles have an adsorption action and the like and can improve the washing action on the object to be washed. However, if the gas mixing unit 4 of FIG. 12 is adopted in the fine bubble generating device, the gas mixed in the water by the gas mixing unit 4 cannot be uniformly present in the water, and the fine bubbles generated by the fine bubble generation unit Since the bubble diameter is uneven, water containing fine bubbles having a uniform diameter cannot be obtained, that is, the effect of the fine bubbles cannot be effectively exerted on the object to be cleaned.

  In addition, when the length of the washing water flow path 3 from the gas mixing unit 4 to the fine bubble generating unit is increased, the gas mixed in the water in the gas mixing unit 4 is gradually diffused into the water and gradually and uniformly exists. However, such a fine bubble generator 10 cannot be used in a flush toilet device having a limited installation space.

  The present invention has been made in view of the above-described conventional problems, and is a small-sized gas that can be mixed in the cleaning water in a uniform state in the gas mixing portion and can generate uniform fine bubbles in the fine bubble generating portion. It is an object of the present invention to provide a flush toilet apparatus equipped with a fine bubble generating apparatus.

  In order to solve the above-mentioned problem, the flush toilet apparatus according to claim 1 of the present invention has the ejector effect of the wash water flowing through the wash water flow path 3 in order from the upstream side of the wash water flow path 3 reaching the bowl portion 2 of the toilet bowl. A flush toilet apparatus comprising a gas mixing unit 4 for mixing gas into the cleaning water and a micro-bubble generating device 10 provided with a micro-bubble generating unit 5 for minimizing the gas mixed into the cleaning water. The gas mixing chamber 6 is provided in a part of the path 3, and the outlet 14 a of the ejection nozzle 14 for ejecting the cleaning water is projected from the upstream side of the gas mixing chamber 6, and the ejection nozzle 14 protruding into the gas mixing chamber 6 is provided. On the outer peripheral surface, an inclined peripheral surface 20 that is inclined toward the center side of the cleaning water flow path 3 is formed on the downstream side, and the gas outlet 13a of the gas supply passage 13 is formed at the maximum diameter portion 20a of the inclined peripheral surface 20 in the flow direction of the cleaning water. Is the corresponding gas mixing chamber 6 position? Is arranged facing the position of the gas mixing chamber 6 on the upstream side of the maximum diameter portion 20a of the inclined peripheral surface 20 to constitute the gas mixing portion 4, and a narrowed portion having a narrowed flow channel diameter in the washing water flow channel 3 16. A venturi tubular water channel 15 is formed by continuously connecting the enlarged diameter portion 17 having an enlarged flow channel diameter from the upstream side, and the reduced diameter portion 16 of the venturi tubular water channel 15 is connected to the downstream side of the gas mixing chamber 6. The fine bubble generating part 5 is constituted by the enlarged diameter part 17 of the venturi tubular water channel 15.

  According to this, when gas is mixed into the cleaning water ejected from the ejection nozzle 14 by the ejector effect, the gas supplied from the gas outlet 13 a of the gas supply path 13 to the gas mixing chamber 6 is the inclined peripheral surface 20 of the ejection nozzle 14. In other words, the gas can be mixed from the entire circumference of the washing water from the oblique outer side of the washing water toward the central side of the washing water. Therefore, even when the fine bubble generating unit 5 is disposed immediately downstream of the gas mixing unit 4 in the cleaning water flow path 3, the cleaning can be performed. Since the gas mixed in the water almost uniformly without any deviation can be refined by the microbubble generator 5, stable and uniform microbubbles can be obtained. That is, since the fine bubble generating part 5 can be disposed close to the gas mixing part 4, the small fine bubble generating apparatus 10 required for the flush toilet device can be obtained.

  Further, the flush toilet apparatus according to claim 2 is characterized in that, in claim 1, the inclined peripheral surface 20 is formed continuously to the edge of the outlet 14a of the ejection nozzle 14. According to this, the gas flowing along the inclined peripheral surface 20 can be mixed into the cleaning water squeezed out from the ejection nozzle 14 immediately after jetting, and the gas can be mixed in the cleaning water in a substantially uniform state without bias. Can promote.

  Further, the flush toilet apparatus according to claim 3 is characterized in that, in claim 1 or 2, an ejection enlarged-diameter portion 21 whose inner diameter increases toward the downstream is provided at the edge of the outlet 14a of the ejection nozzle 14. To do. According to this, the washing water ejected from the outlet 14a of the ejection nozzle 14 is ejected so as to spread radially outward by the ejection enlarged diameter portion 21, and the flow direction and the ejection nozzle at the outer surface portion of the ejected washing water The crossing angle with the flow direction of the gas along the 14 inclined peripheral surfaces 20 can be increased, and the gas-liquid interface can be increased by turbulently mixing the gas into the cleaning water. It is possible to promote mixing in a substantially uniform state without bias.

  Moreover, the flush toilet apparatus according to claim 4 is the flush toilet apparatus according to any one of claims 1 to 3, wherein the rectifying restricting portion 22 having a gradually reduced inner diameter is provided in the wash water flow path 3 on the downstream side of the fine bubble generating portion 5. It is provided. According to this, the flow velocity of the washing water can be increased by the rectifying diameter reducing portion 22 with respect to the washing water containing the fine bubbles, and the fine bubbles contained in the washing water collide with each other. Can be prevented.

  Further, the flush toilet apparatus according to claim 5 is the rectifying plate 19 according to any one of claims 1 to 4, wherein the flow of wash water is adjusted in the wash water flow path 3 at a portion continuous downstream of the fine bubble generating unit 5. Is provided. According to this, the flow of washing water can be adjusted by the baffle plate 19 with respect to the washing water containing the fine bubbles immediately after passing through the fine bubble generating unit 5, and the fine bubbles contained in the washing water collide with each other. Thus, unification can be prevented.

  Further, the flush toilet apparatus according to claim 6 is characterized in that, in any one of claims 1 to 5, a rectifying plate 19 for adjusting a flow of washing water is provided at a washing water outlet 10a of the fine bubble generating device 10. To do. According to this, the flow of the cleaning water can be adjusted by the baffle plate 19 with respect to the cleaning water containing the fine bubbles coming out of the fine bubble generating device 10, and the fine bubbles contained in the cleaning water collide with each other. It is possible to prevent unification.

  Further, the flush toilet apparatus according to claim 7 is characterized in that, in any one of claims 1 to 6, the agent addition section 23 is provided in the flush water flow path 3 upstream of the fine bubble generating section 5. According to this, for example, when a surfactant is added to the cleaning water from the agent addition part 23, the surfactant reduces the surface tension of the cleaning water and mixes in the fine bubble generation part 5 Therefore, it is possible to promote the generation of stable and homogeneous microbubbles in the microbubble generating unit 5, and to downsize the microbubble generator 10.

  Further, in the flush toilet apparatus according to claim 8, the agent outlet 25 a of the agent supply passage 25 included in the agent addition portion 23 is arranged in the diameter reducing portion 16 of the venturi tubular water passage 15 of the washing water passage 3 in claim 7. It was set up. According to this, the addition of the agent to the washing water in the agent addition unit 23 can be performed by the ejector effect by the washing water flowing through the washing water flow path 3, and a special drive such as a pressure pump is added to the addition of the agent addition unit 23. No parts are required, and the configuration of the agent addition unit 23 can be simplified.

  Further, the flush toilet apparatus according to claim 9 is characterized in that, in claim 7 or 8, the opening diameter of the agent outlet 25a of the agent supply path 25 of the agent addition section 23 is reduced by the ejector effect when flowing through the washing water flow path 3. When the cleaning water is sucked into the cleaning water and the cleaning water does not flow into the cleaning water flow path 3, the agent is formed in a diameter that can be held by surface tension. According to this, the presence or absence of the supply of the agent to the washing water by the agent addition unit 23 without the agent pump for forcibly feeding and adding the agent to the washing water, the presence or absence of the flow of the washing water in the washing water channel 3 Therefore, it is possible to ensure the operation of supplying the agent while securing a simple configuration of the agent adding unit 23.

  According to the present invention, since the gas can be mixed in the cleaning water in a uniform state at the gas mixing section, even if the fine bubble generation section is provided immediately downstream of the gas mixing section of the cleaning water flow path, uniform micro bubbles can be generated. It has the advantage that it can be generated, and the gas mixing part and the fine bubble generating part can be arranged in close proximity so that the fine bubble generating device can be miniaturized.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  1 and 2 show an example of an embodiment of the present invention. As shown in FIG. 1, the flush toilet apparatus of the present example includes a pottery body 1 made of ceramic or resin that includes a bowl portion 2 and a siphon trap 27. The siphon trap 27 forms water at the bottom of the bowl portion 2. An upper portion of the bowl portion 2 is provided with a water discharge port 7 that is an outlet of the cleaning water flowing through the cleaning water flow path 3. The washing water flow path 3 is directly connected to a water pipe (not shown), and the washing water flow path 3 is provided with a washing water supply valve 8 constituted by an electromagnetic valve. The washing water supply valve 8 is controlled by a control unit (not shown) so as to be opened when the washing water is discharged to the bowl unit 2.

  In this cleaning water flow path 3, a gas composed of toilet room air is mixed into the cleaning water flow path 3, and the gas mixed in the cleaning water flow path 3 is refined so that micro bubbles can be generated. Is provided. In this example, the microbubble generator 10 is used so as to be small enough to be installed in the toilet body 1 in front of the water discharge port 7 of the washing water flow path 3.

  The fine bubble generating apparatus 10 has a cylindrical main body case 11 through which the cleaning water flow path 3 penetrates, and a gas mixing unit 4 that mixes gas from the upstream side of the cleaning water flow path 3 in the main body case 11. In addition, a fine bubble generation unit 5 that makes it possible to generate fine bubbles by refining the mixed gas is sequentially provided.

  The gas mixing unit 4 includes a gas mixing chamber 6 provided in the washing water flow path 3, a gas supply path 13 having a check valve 12 and a gas outlet 13 a facing the gas mixing chamber 6, and an internal portion of the gas mixing chamber 6. And an ejection nozzle 14 for ejecting washing water passed through the outlet 14a. The ejection nozzle 14 is formed in a conical cylindrical shape having an inner diameter and an outer diameter that are narrower toward the outlet 14a side. The ejection nozzle 14 is disposed on the coaxial line of the washing water flow path 3, and the portion on the outlet 14a side of the ejection nozzle 14 is a gas mixing chamber. 6 is projected from the upstream side. On the outer peripheral surface of the projecting portion of the jet nozzle 14 into the gas mixing chamber 6 (the portion in the vicinity of the outlet 14a of the jet nozzle 14), there is an inclined peripheral surface 20 that inclines toward the center of the wash water flow path 3 toward the downstream side. Is formed. The inclined peripheral surface 20 is formed so as to continue to the end surface of the ejection nozzle 14 on the outlet 14a side. Further, the gas outlet 13a of the gas supply path 13 is a portion on the upstream side of the cleaning water flow channel 3 with respect to the outlet surface 14a of the ejection nozzle 14 in the gas mixing chamber 6, and an inclined circumferential surface in the flow direction of the cleaning water. It is provided at the position of the gas mixing chamber 6 corresponding to the 20 maximum diameter portions 20 a so as to open facing the maximum diameter portion 20 a of the inclined peripheral surface 20.

  The fine bubble generating unit 5 is a part that makes it possible to generate fine bubbles by refining a bubble-like gas mixed in the cleaning water. In this example, the bubble-like gas is refined by a pressure sudden change portion provided in the washing water flow path 3, and the venturi tubular water passage 15 capable of applying pressure reduction and pressurization to the bubbles is adopted as the pressure sudden change portion. Has been. In this sudden pressure change part, when the bubble passes through the reduced diameter part 16 that is the inlet of the venturi tubular water channel 15, the flow velocity becomes faster and the pressure is reduced and expanded, and the washing water channel 3 is expanded in the enlarged diameter part 17 of the venturi tubular water channel 15. As the cross-sectional area increases, it is pressurized and contracts, but the bubbles are refined by being divided by the shearing force generated at this time. The reduced diameter portion 16 of the venturi tubular water channel 15 is connected so as to open to the downstream side of the gas mixing chamber 6 of the gas mixing portion 4. Strictly speaking, the fine bubble generating portion 5 is a venturi where fine bubbles are generated. The enlarged diameter portion 17 of the tubular water channel 15 constitutes this.

  In the fine bubble generating device 10 of this example, the rectifying plate 19 made of a plate material having a mesh structure or a porous structure is disposed in the washing water flow path 3 downstream of the fine bubble generation unit 5, and the fine bubbles are further removed. While subdividing and rectifying the washing water, it is possible to prevent the fine bubbles from uniting and the bubble diameter to increase, but the rectifying plate 19 may be installed arbitrarily.

  Specifically, the main body case 11 of the microbubble generator 10 is formed by integrally connecting an upstream pipe member 11a, a midstream pipe member 11b, and a downstream pipe member 11c on the same axis. The upstream pipe member 11a is formed with a conical tube-shaped ejection nozzle 14 at a downstream side portion thereof. The middle flow pipe member 11b has a gas outlet 13a portion of the gas supply path 13 and a gas mixing chamber 6 formed in an upstream part thereof, and a venturi tubular water channel 15 formed in a downstream part thereof. A rectifying plate 19 is provided on the downstream pipe member 11c. The ejection nozzle 14 of the upstream pipe member 11a is connected so as to be fitted on the upstream side portion of the middle flow pipe member 11b, and the gas mixing chamber 6 is closed on the upstream side. When washing water flows into the washing water flow path 3 so as to be supplied to the bowl portion 2, washing water is ejected from the outlet 14 a of the ejection nozzle 14. At this time, negative pressure is generated in the gas mixing chamber 6. Thus, gas is mixed into the cleaning water by the ejector effect.

  Here, when gas is mixed into the washing water ejected from the ejection nozzle 14 by the ejector effect, the gas supplied from the gas outlet 13a of the gas supply path 13 to the gas mixing chamber 6 is as shown in FIG. In addition, the gas flows over and along the entire circumference of the inclined peripheral surface 20 of the ejection nozzle 14 due to the Coanda effect, that is, the gas flows from the oblique outer side of the washing water to the central side of the washing water from the entire circumference of the washing water. A cylindrical gas layer A that is relatively thin in the radial direction of the cleaning water flow path 3 and continuous in the flow direction of the cleaning water flow path 3 in a relatively inner portion of the cleaning water. Gas can be mixed into the cleaning water so that the cleaning water flowing through the cleaning water flow path 3 passes through the gas mixing part 4 and can be mixed almost evenly with no deviation in the cleaning water. It is done

  As described above, since the gas mixing unit 4 can mix the gas into the cleaning water almost evenly, the fine bubble generation unit 5 refines the bubble-like gas mixed almost uniformly without any bias in the cleaning water. Homogeneous fine bubbles can be stably obtained. Therefore, the fine bubble generating part 5 can be disposed at a position immediately downstream of the gas mixing part 4 as in this example. That is, in the gas mixing unit 4 in the prior art, gas can be mixed only in a state where the cleaning water is biased, and in order for the bubbled gas to exist almost uniformly in the cleaning water, the bubbled gas is natural. Generation of fine bubbles of this example having a gas mixing portion 4 that allows gas to be mixed substantially evenly in the cleaning water without being biased. In the apparatus 10, it is not necessary to provide the long washing water flow path 3 in order to ensure the stable generation of homogeneous microbubbles by micronization by the microbubble generating unit 5, and the microbubbles are finely positioned immediately downstream of the gas mixing unit 4. The bubble generating unit 5 can be disposed, and therefore, the small fine bubble generating device 10 required for the flush toilet device can be obtained. In particular, as in the present example, in the case where the enlarged diameter portion 17 is provided immediately downstream of the gas mixing portion 4 of the cleaning water flow path 3, the cleaning water can flow between the inner surface of the enlarged diameter portion 17 and the gas layer A to form a gas. It was possible to contribute to the improvement of the mixing efficiency into the washing water.

  When the cleaning water containing the fine bubbles generated by the fine bubble generating unit 5 is discharged into the bowl part 2, the surface of the bowl part 2 exhibits the dirt removal effect and the antifouling effect by the fine bubbles and has a visual effect on the cleaning water. It can be demonstrated. Specifically, a large amount of fine bubbles spread throughout the washing water collide with the surface of the bowl portion 2 and rupture, thereby peeling off the dirt attached to the surface of the bowl portion 2, The dirt adhered to the surface of the bowl part 2 is peeled off or decomposed by sound waves, or adsorbed on the dirt or suspended substances attached to the surface of the bowl part 2 by the adsorption characteristics (Marangoni effect, etc.) possessed by the fine bubble interface. The apparent specific gravity of dirt and suspended solids can be reduced, separated, levitated and separated, or the surface of fine bubbles can be negatively charged and electrostatically adsorbed to the suspended matter to wrap the suspended matter in fine bubbles. By being able to do so, the dirt removal effect of the bowl part 23 is acquired. Moreover, since fine bubbles can adhere to and cover the surface of the bowl part 2 due to the above-mentioned adsorption characteristics and the like, it is possible to prevent filth from adhering to the surface of the bowl part 2 and to obtain an antifouling effect. In addition, a large amount of fine bubbles that spread throughout the wash water can change the degree of light scattering in the wash water, resulting in a visual effect that makes the wash water cloudy. Needless to say, the effect (water splash prevention effect, noise reduction effect, and water saving effect) obtained by including bubbles in the washing water can be obtained as well. Specifically, the cleaning water containing bubbles reduces the frictional resistance to the bowl part 2 and can prevent water splashing, and the cleaning sound is reduced to obtain a silent effect, and also contains bubbles. Since the apparent bulk specific gravity of the washing water is reduced, a water-saving effect can be obtained. The dirt removal effect and antifouling effect peculiar to the fine bubbles can be effectively obtained when the bubble diameter is about 200 μm or less. Furthermore, when the bubble diameter is about 50 μm or less, the fine bubbles can stay in the washing water for a long time, and the above-mentioned stain removal effect and antifouling effect can be continuously obtained. Note that the above-described effects of the fine bubbles can be remarkably obtained when the bubble diameter is particularly μm (less than 1 mm). As described above, in the present example, even if the microbubble generator 10 is small, the generation of microbubbles in the microbubble generator 5 is made stable, so that the various effects of the microbubbles can be ensured in the bowl 2. It was possible to act on.

  Hereinafter, other examples of the embodiment of the present invention will be listed. Parts having the same configurations as those of the example described above are denoted by the same reference numerals, description thereof is omitted, and different parts will be described.

  The example of FIG. 3 is an example in which the ejection enlarged-diameter portion 21 whose inner diameter increases toward the downstream is provided at the edge of the outlet 14 a of the ejection nozzle 14. According to the enlarged diameter portion 21 for ejection, the washing water ejected from the outlet 14a of the ejection nozzle 14 can be ejected so as to spread outward in the radial direction, and the flow at the outer surface portion of the ejected washing water is performed. Since the crossing angle between the direction of the gas and the flow direction of the gas along the inclined peripheral surface 20 of the ejection nozzle 14 can be increased, that is, the gas-liquid interface can be increased by making the gas mixture into the cleaning water turbulent. Therefore, it is possible to promote the mixing of the gas in the cleaning water without being biased in a substantially uniform state.

  The example of FIG. 4 is an example in which a cusp 28 is formed at the edge of the outlet 14 a of the ejection nozzle 14. The cusp 28 is formed by continuing the inclined peripheral surface 20 up to the end edge of the outlet 14a of the ejection nozzle 14 (the end of the inner surface of the outlet 14a on the gas mixing chamber 6 side). The gas flowing along the inclined peripheral surface 20 can be mixed into the washing water discharged from the jet nozzle 14 immediately after jetting, and the mixing of the gas into the washing water can be promoted in a substantially uniform state.

  Further, in the example of FIG. 5, a rectifying reduced diameter portion 22 in which the diameter of the washing water flow path 3 is reduced instead of the rectifying plate 19 is formed on the downstream side of the fine bubble generating portion 5. According to the rectifying diameter reducing portion 22, the flow rate of the washing water can be increased, and similarly to the rectifying plate 19, the fine bubbles contained in the washing water can be prevented from colliding with each other.

  Further, the example of FIG. 6 is an example in which the rectifying plate 19 is provided in the washing water flow path 3 at a portion continuous downstream of the fine bubble generating unit 5. According to this, the flow of washing water can be adjusted by the baffle plate 19 with respect to the washing water containing the fine bubbles immediately after passing through the fine bubble generating unit 5, and the fine bubbles contained in the washing water collide with each other. Thus, unification can be prevented.

  Further, the example of FIG. 7 is an example in which the rectifying plate 19 is provided at the washing water outlet 10 a of the fine bubble generating device 10. According to this, the flow of the cleaning water can be adjusted by the baffle plate 19 with respect to the cleaning water containing the fine bubbles coming out of the fine bubble generating device 10, and the fine bubbles contained in the cleaning water collide with each other. It is possible to prevent unification. Further, the rectifying plate 19 provided at the washing water outlet 10a of the fine bubble generating device 10 can be easily cleaned and removed, and can be improved in maintenance. The rectifying plates 19 and the rectifying diameter reducing portions 22 arranged at the appropriate positions can be used in combination.

  Further, the example of FIG. 8, the example of FIG. 9, and the examples of FIGS. 10 and 11 are examples in which an agent addition unit 23 for adding a surfactant to the cleaning water is provided. These agent addition parts 23 are arranged on the upstream side of the fine bubble generation part 5 in the washing water flow path 3.

  The agent addition unit 23 in the example of FIG. 8 connects an agent supply path 25 to an agent tank 24 filled with a surfactant, and a check valve 26 for preventing a backflow of washing water is disposed in the agent supply path 25. The agent outlet 25 a of the agent supply path 25 is disposed in the gas mixing chamber 6. That is, a structure in which the agent is added to the cleaning water by the ejector effect using the negative pressure generated in the gas mixing chamber 6 by the cleaning water discharged from the outlet 14a of the ejection nozzle 14 is employed.

  Here, as an agent with which the agent addition part 23 is filled, surfactant and a fragrance | flavor are mentioned, for example. The agent may be any of gas, liquid or solid. According to the addition of the surfactant to the cleaning water by the agent addition unit 23, the surface tension of the cleaning water can be reduced, and the finer bubble is promoted by the shearing force and the like performed in the fine bubble generating unit 5 to have a smaller diameter. It can contribute to the generation of fine bubbles. In addition, since the surfactant can be included in the fine bubble interface, it is possible to improve the cleaning effect particularly on the oil content of the filth, and it is difficult for the bubbles to burst and disappear even if they rise to the water surface. In addition, a fine bubble layer can be formed on the surface of the stored water, so that the effect of preventing odor diffusion and the effect of preventing water splash can be improved. Furthermore, since the surface of the stored water can be covered with a fine bubble layer, the escape of the fine bubbles contained in the stored water into the gas can be suppressed, and the anti-fouling effect can be achieved by containing the fine bubbles in the stored water over a long period of time. Can be demonstrated. According to the addition of the fragrance to the washing water by the agent addition unit 23, fine bubbles containing the fragrance component can be obtained, staying in the stored water for a long time, and rupturing gradually, Due to the characteristics of the fine bubbles such as going out to the outside toilet space, it is possible to gradually dissipate the fragrance component in the toilet room and to float the incense for a long time in the toilet room to enhance the feeling of use. Here, since the agent component added to the washing water gathers at the gas-liquid interface between the fine bubbles and the washing water and the agent concentration is high, the effect of the agent components is effective in synergy with the effect of the fine bubbles. Can be demonstrated. The agent supply path 25 may be provided with an agent pump for forcibly feeding and adding the agent to the cleaning water, but the agent outlet 25a is a portion where the negative pressure of the cleaning water channel 3 is generated as in this example. By providing in, the ejector effect can be utilized and the output of the agent pump can be reduced.

  9 and FIG. 10, each agent addition unit 23 connects an agent supply path 25 to an agent tank 24 filled with an agent, and an agent outlet 25 a of the agent supply path 25 is connected to the venturi tube of the microbubble generator 10. It is provided facing the reduced diameter portion 16 of the water channel 15. That is, a structure is employed in which the agent is added to the cleaning water by the ejector effect using the negative pressure generated by the cleaning water flowing through the reduced diameter portion 16 of the venturi tubular water channel 15. Note that the agent tank 24 of FIG. 10 is integrally provided on the circumferential side surface portion of the main body case of the fine bubble generating device 10. The agent has different viscosities depending on the type of the agent, but when the flow rate of the agent outlet 25a of the agent supply channel 25 flows through the washing water channel 3 in consideration of the viscosity of the component, the agent shown in FIG. Thus, the agent is sucked into the washing water by the ejector effect, and when the washing water does not flow into the washing water flow path 3, the diameter of the agent is maintained at the agent outlet 25a by the surface tension as shown in FIG. It is also preferable to form. According to this, the presence or absence of the supply of the agent to the cleaning water by the agent addition unit 23 can be reliably defined by the presence or absence of the flow of the cleaning water in the cleaning water flow path 3 without using the agent pump. The certainty of the operation of supplying the agent can be provided while ensuring a simple configuration. This also eliminates the need for the check valve 26 provided in the agent supply path 25. In each of the above examples, an example in which one agent addition unit 23 is provided in the fine bubble generating device 10 is illustrated. However, a plurality of agent addition units 23 of different agents are provided in the fine bubble generating device 10 to simultaneously obtain the effects of different agents. It may be demonstrated.

It is a flush toilet device of the example of embodiment of this invention, Comprising: (a) is a schematic sectional side view of the whole, (b) is a sectional side view of the principal part. (A) is a block diagram of the configuration of the fine bubble generating apparatus same as above, and (b) is an explanatory diagram explaining the gas mixing operation into the cleaning water same as above. It is a sectional side view of the principal part of the flush toilet apparatus of the further another example of embodiment of this invention. It is a sectional side view of the principal part of the flush toilet apparatus of the further another example of embodiment of this invention. It is a sectional side view of the principal part of the flush toilet apparatus of the further another example of embodiment of this invention. It is a sectional side view of the principal part of the flush toilet apparatus of the further another example of embodiment of this invention. It is a sectional side view of the principal part of the flush toilet apparatus of the further another example of embodiment of this invention. It is the flush toilet apparatus of the further another example of embodiment of this invention, (a) is the whole sectional side view, (b) is a principal part sectional side view. It is a sectional side view of the principal part of the flush toilet apparatus of the further another example of embodiment of this invention. It is a sectional side view of the principal part of the flush toilet apparatus of the further another example of embodiment of this invention. It is explanatory drawing explaining operation | movement of a chemical | medical agent supply part same as the above, (a) shows the state by which the chemical | medical agent is hold | maintained by the surface tension in the chemical | medical agent outlet when the washing water is not flowing into the washing water flow path, (b) Indicates a state in which the agent is added to the cleaning water from the outlet of the agent by the ejector effect when the cleaning water flows in the cleaning water flow path. It is a sectional side view of the gas mixing part of the example of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Toilet body 2 Bowl part 3 Washing water flow path 4 Gas mixing part 5 Fine bubble production | generation part 6 Gas mixing chamber 10 Fine bubble generating apparatus 13 Gas supply path 14 Jet nozzle 15 Venturi tubular water path 16 Diameter reduction part 17 Expanding part 20 Inclined circumference Surface 20a Maximum diameter part

Claims (9)

  In order from the upstream side of the wash water flow path to the bowl part of the toilet bowl, a gas mixing part for mixing gas into the wash water by the ejector effect of the wash water flowing through the wash water flow path, and fine bubbles for miniaturizing the gas mixed in the wash water A flush toilet apparatus provided with a microbubble generator having a generation unit, wherein a gas mixing chamber is provided in a part of a washing water flow path, and an outlet of a jet nozzle for jetting washing water is provided in the gas mixing chamber. An inclined peripheral surface is provided on the outer peripheral surface of the jet nozzle that protrudes from the upstream side and protrudes into the gas mixing chamber. The inclined peripheral surface is inclined toward the central side of the cleaning water channel toward the downstream side. The gas mixing part is configured by facing the position of the gas mixing chamber corresponding to the maximum diameter part of the inclined peripheral surface in the flow direction or the position of the gas mixing chamber upstream of the maximum diameter part of the inclined peripheral surface And a squeezed part with a reduced diameter in the washing water channel, A venturi tubular water channel is formed by connecting the enlarged diameter portions with enlarged diameters in order from the upstream side, and the narrowed portion of the venturi tubular water channel is connected to the downstream side of the gas mixing chamber, so that the enlarged diameter portion of the venturi tubular water channel A flush toilet device characterized in that a fine bubble generating part is configured. 2. The flush toilet apparatus according to claim 1, wherein the inclined peripheral surface is formed continuously to the edge of the outlet of the ejection nozzle. The flush toilet apparatus according to claim 2 or 2, wherein an enlarged diameter portion for ejection whose inner diameter increases toward the downstream is provided at an end edge of the outlet of the ejection nozzle. The flush toilet apparatus according to any one of claims 1 to 3, wherein a rectifying throttle part having a gradually reduced inner diameter is provided in a washing water flow path downstream of the fine bubble generating part. The flush toilet apparatus according to any one of claims 1 to 4, wherein a rectifying plate for regulating a flow of the washing water is provided in a washing water flow path at a site continuous downstream of the fine bubble generating unit. The flush toilet apparatus according to any one of claims 1 to 5, wherein a rectifying plate for adjusting a flow of the washing water is provided at a washing water outlet of the fine bubble generating apparatus. The flush toilet apparatus according to any one of claims 1 to 6, wherein an agent addition section is provided in the washing water flow path upstream of the fine bubble generating section. 8. The flush toilet apparatus according to claim 7, wherein the agent outlet of the agent supply channel of the agent addition unit is disposed at a narrowed portion of the venturi tubular channel of the cleaning water channel. The opening diameter of the agent outlet of the agent supply path of the agent addition section is set so that the agent is sucked into the washing water by the ejector effect when flowing through the washing water flow path, and the surface tension of the agent when the washing water does not flow into the washing water flow path. 9. The flush toilet apparatus according to claim 7 or 8, wherein the flush toilet apparatus is formed to have a diameter that can be held by the above-described method.

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