JP2003221859A - Washing water discharging device for water closet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing water discharging device for a toilet having high washing capacity and the effect of saving water. <P>SOLUTION: The washing water discharging device of the toilet includes a washing water supply means for supplying washing water, a washing water jetting outlet connecting to the washing water supply means and jetting the washing water, an air introduction inlet opening the air and introducing the air as the fresh air, an air contact mixing room connecting to the air introduction inlet, tentatively storing the air to be introduced and contacting/mixing the jetting washing water with the storing air and a stepped part disposed down stream of the air contact mixing room for making the washing water collide with to retain, and a washing water discharge port disposed down stream of the stepped part and opened in the air for discharging mixed washing water and air. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aeration method for flushing flush toilet bowl flushing water, in which air is mixed with flush toilet bowl flushing water.
The present invention relates to a flush water discharge device for flush toilets that mixes air with flush water for flush toilets.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication (Kokai) No. 6-299585 discloses a bubble siphon toilet having an air intake path formed in a water supply path for jet spout water for the purpose of improving a cleaning effect and a water saving effect. In addition, in Japanese Patent Laid-Open No. 9-125502,
For the purpose of reducing noise generated during cleaning, a net is installed in the pipeline that conveys the cleaning water supplied from the storage tank that stores the cleaning water, and a mixture of air and cleaning water is passed therethrough. Discloses a flush toilet having an air mixing member for crushing air bubbles and dispersing the air bubbles in the wash water.

[0003]

The bubbly flow in which a large number of air bubbles are dispersed and mixed in the wash water has less water splash and noise when it collides with the solid surface, and due to the high frequency vibration generated when it collides with the solid surface. Has high detergency. In addition, it is possible to save water used for cleaning.

When air and wash water are simply brought into contact with each other to release the mixture, there is no means for actively crushing the air, so that a huge air mass is present in the wash water, which is very unstable. It becomes a flow. If the washing water having such an air squirt is released, a burst noise of an air mass is generated at the time of ejection,
Or because the flow of washing water is interrupted by the air trap,
The cleaning water is spouted intermittently, causing unnecessary vibrations and water splashing. In particular, this phenomenon becomes more remarkable as the air bubble mixing ratio increases, and when mixing a very small amount of air, a stable air bubble flow can be obtained because the probability of contact between air bubbles is low, but the cleaning effect is improved and If the air bubble mixing ratio is increased for the purpose of saving water, the chance of contact between air bubbles is dramatically increased, and the stability is greatly impaired.

In order to solve such a problem, it is necessary to subdivide the bubbles and disperse them in the washing water, but in order to subdivide and disperse the bubbles, the bubbles are made uniform by passing through a net or the like. Must be crushed. However, when a mixture of air and wash water is passed through a net in this way, the highly viscous wash water must also pass through the narrow passages of the net at the same time. A large applied pressure is required in order to obtain a sufficiently high air bubble mixing ratio to obtain the effect and the high cleaning effect. However, in order to obtain such a large applied pressure, external energy such as a pressurizing pump is required, so the device becomes large and it becomes difficult to install the device in a narrow toilet room, and the habitability of the user is greatly increased. Lower. Further, since a special power source for driving the pressurizing pump is required, not only unnecessary energy is used, but also a new device is required for avoiding water leakage in the toilet room and leakage accident due to high humidity. Such is not preferable for practical use. Further, when a net or the like is provided in the water passage, dust contained in the wash water is trapped in the net, so that the required pressure is further increased and the pipe is easily blocked. When the pipe is blocked in this way, the rate of air bubbles and the amount of washing water decrease over time, so the washing power and water-saving effect decrease, and the user needs to perform frequent maintenance.

The present invention has been made to solve the above-mentioned problems, and it is possible to obtain a large air entrainment rate with a small amount of energy without using a special driving means, and even if the air bubble entrainment rate is increased, noise can be increased. An object of the present invention is to provide a flush water discharge device for a toilet bowl having a high flushing ability and a water-saving effect that makes it possible to obtain stable spouting without splashing water.

[0007]

In order to achieve the above object, the first aspect of the present invention provides a cleaning water supply means for supplying cleaning water, and a cleaning means for communicating with the cleaning water supply means and ejecting cleaning water. A water jet outlet, an air inlet that is open to the atmosphere and introduces air that is the outside air, and communicates with the air inlet, temporarily stores the introduced air, and jets the washed water and the stored air. An air contact mixing chamber for contacting and mixing, a step portion installed downstream of this air contact mixing chamber for colliding and accumulating wash water, and a wash water discharge device that is installed near this step portion and fixes the wash water discharge device In the flush toilet which is installed downstream of the fixed part and the fixed part of this flush water discharge device and discharges the mixed flush water and air from the flush water discharge port opened to the atmosphere, the flush water outlet upstream side pipe line is expanded. Characterized by the structure that has been. By expanding the washing water outlet upstream side pipe line, the angle for causing the water streams to collide with each other can be increased when the washing water outlet has a plurality of openings. By increasing the angle, the focal length at which the water stream collides can be shortened. As a result, the flush water discharge device can be made compact, and the cost can be reduced and the flush water discharge device can be mounted on a space-saving toilet bowl with a small mounting space.

The invention according to claim 2 is characterized in that the angle for colliding the water streams with each other is from 20 to 90 degrees when the washing water ejection port has a plurality of openings. According to the invention,
By setting the angle of the cleaning water ejection port to 20 to 90 degrees, the cleaning water ejected from the cleaning water ejection port and the air introduced from the air introduction port can be ejected in an optimal mixed state. By the above action, the flush water can wash the ball surface of the flush toilet at an ideal flow rate, and the dirt can be quickly washed off. Further, since the cleaning water discharged from the cleaning water discharge port is uniformly mixed with air, noise generated from the discharge port can be reduced.

According to a third aspect of the present invention, the upstream end portion of the opening of the wash water outlet is smoothly connected to the upstream pipe line of the wash water outlet. According to the present invention, since the upstream end portion of the opening of the cleaning water jet is smoothly connected to the upstream pipe line of the cleaning water jet, the washing water flowing from the cleaning water supply means is sprayed with the washing water. It is possible to reduce the pressure loss when flowing in from the upstream side of the opening of the outlet. As a result, the water force can be jetted from the wash water spout without weakening, so that the wash water and air can be efficiently mixed, and the washing power of the ball surface can be increased.

According to a fourth aspect of the present invention, there is provided a flush toilet having a flush water discharge device for a flush toilet, wherein the flush water discharge device fixing portion is inserted outwardly by inserting the flush water discharge device fixing portion. It is characterized in that it is fixed to the flush toilet by using a nozzle insert collar fitted in a mounting hole of the flush toilet, the diameter of which is expanded. According to the present invention, the nozzle insert collar is inserted into the mounting hole, and the cleaning water discharger fixing portion having the outer periphery screw-processed in the central opening of the nozzle insert collar is screwed while being rotated. At this time, since the lower part of the nozzle insert collar opening is narrowed, the lower part of the nozzle insert collar is expanded by screwing in the cleaning water discharge device fixing part. As a result, there is no gap between the mounting hole and the nozzle insert collar, and it is possible to adhere and fix them.

According to a fifth aspect of the present invention, the nozzle insert collar is composed of a plurality of elastic bodies having an elastic force different from that of the cleaning water discharger fixing portion and having different hardness. According to the present invention, when the cleaning water discharge device fixing portion of the cleaning water discharge device is inserted into the nozzle insert collar, the screw part is damaged even when tightened with high torque because only the screw part is a hard elastic body. Since it does not, it can be securely tightened and can be more firmly fixed.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described. Figure 1
As shown in FIG. 1, the flush toilet body 1 is a reverse type S in which one end communicates with a bowl 2 that stores accumulated water and one end communicates with the bottom of the bowl 2 and the other end connects to an external discharge pipe (not shown).
A trap 3 and a device storage compartment 5 that stores a valve unit 6 behind the bowl portion 2 are provided. The valve unit 6 is connected to a water supply pipe 10 connected to a water pipe 12 via a water shutoff valve 11.

FIG. 2 shows a section A of FIG. An overhang portion 4 is formed at the upper edge of the inner wall surface of the bowl portion 2 so that the upper portion thereof projects to the inner peripheral side. Further, above the stationary interface of the accumulated water in the bowl portion 2 and immediately below the overhang 4, there is provided a wash water discharge port 13 that is open to the atmosphere on the inner wall of the bowl portion 2. Returning to FIG. 1 again, the cleaning water discharge port 13
Is connected to the bubble mixing device 7 whose one end is connected to the valve unit 6.

Inside the valve unit 6 housed in the equipment housing compartment 5, as shown in FIG. 3, an electromagnetic valve 8 connected to the water supply pipe 10 from the upstream side, a constant flow valve 9, and an internal connecting pipe 14 are provided. The electromagnetic valve 8 is linked with an operating device 15 for instructing a toilet cleaning operation.

As shown in FIG. 4, the bubble entraining device 7 has a valve connection port 16 connected to the internal pipe 14 of the valve unit 6 and a flow passage cross-sectional area smaller than the flow passage cross-sectional area of the valve connection port 16. A water outlet 17, an air contact mixing chamber 18 having an inner diameter larger than that of the wash water outlet 17, and an air inlet which is located immediately downstream of the wash water outlet 17 and communicates with the air contact mixing chamber 18 and is open to the atmosphere. Air introduction pipe 2 having 19
0, which is in communication with the air contact mixing chamber 18 immediately downstream thereof and is smaller than the flow passage cross-sectional area of the air contact mixing chamber 18.
And a cleaning water discharge device fixing portion 25 which is installed near the step portion and has an outer periphery screwed to fix the cleaning water discharge device, and the cleaning water discharge port 13 from the downstream of the cleaning water discharge device fixing portion 25. A bubbly flow transport pipe 22 that connects the
Composed of.

The operation of the flush water discharger for a toilet bowl according to this embodiment will be described. When the toilet user operates the operating device 15 to instruct the toilet cleaning, the electromagnetic valve 8 of the valve unit 6 opens, and the flush water pressure-fed from the water pipe 12 by the water pressure is flowed by the constant flow valve 9. Is adjusted to a predetermined amount and flows into the valve connection port 16 through the internal connection pipe 14.

FIG. 5 shows the flow of cleaning water and air from the valve connection port 16 to the air contact mixing chamber 18. The washing water flowing into the valve connection port 16 is jetted into the air contact mixing chamber 18 filled with air from the washing water jet ports 17 having a plurality of openings. It should be noted that the plurality of openings for the washing water 17 are made to collide with each other in the substantially central axis direction of the air contact mixing chamber 18 so that the colliding water flows become finer and air is mixed by the ejector action. At this time, since the inner diameter 29 of the upstream pipe line 29 of the flush water spout 17 is expanded more than the inner diameter 30 of the upstream port of the valve connection port, the flush water spout 17 has a plurality of openings for colliding the water flows. The angle can be increased. By increasing the angle, the focal length at which the water stream collides can be shortened. As a result, the flush water discharge device can be made compact, and the cost can be reduced and the flush water discharge device can be mounted on a space-saving toilet bowl with a small mounting space.

Further, the stepped portion 21 which is smaller than the flow passage cross-sectional area of the air contact mixing chamber 18 serves as a resistance against the water flow and can effectively mix the wash water and the air. By these actions, the cleaning water ejected from the cleaning water ejection port 17 is scattered toward the downstream side of the air contact mixing chamber 18 while entraining a large amount of air. The flow rate of the wash water spouted from the wash water spout 17 is adjusted to a predetermined proper flow rate by the constant flow valve 9 in the valve unit 6, and thus the flow rate of the wash water spouted from the wash water spout 17 is proper. The value has been adjusted.

The broken line arrow shown at the air inlet 19 in FIG. 5 represents the flow of air. As described above, since the air in the air contact mixing chamber 18 flows down together with the cleaning water ejected from the cleaning water ejection port 17, the air contact mixing chamber 18
Is negative pressure. Using this negative pressure, air is naturally sucked into the air contact mixing chamber 18 from the air introduction port 19 which is opened to the atmosphere via the air introduction pipe 20. The air introducing port 19 and the air introducing pipe 20 have an opening area sufficient to suck air.

Since noise generated when the wash water and the air are mixed in the air contact mixing chamber is heard through the air inlet, it is desirable to provide a silencer to reduce the noise.

Returning to FIG. 4, the bubbly flow in which the cleaning water and the air are mixed in the air contact mixing chamber 18 passes through the bubbly flow transport pipe 22 having a predetermined length while maintaining the flow velocity. Bubbly flow transport pipe 2
Since the inner diameter of the flow passage 2 is constant, the washing water that has become a bubbly flow does not cause a turbulent flow, and is discharged from the washing water discharge port 13 into the bowl portion 2 while maintaining a stable bubbling flow. .

Returning to FIG. 1, the cleaning water that has become a bubbly flow discharged from the cleaning water discharge port 13 is discharged substantially horizontally along the inner wall of the bowl portion 2 above the stationary interface of the accumulated water. The bubbly flow of cleaning water has less water splash and noise when it collides with the inner wall surface of the bowl portion 2, so that cleaning of the inner wall surface of the bowl portion 2 is sanitized and quieter. The cleaning water that has become a bubble flow cleans the inner wall surface of the bowl portion 2 while circulating on the inner wall surface of the bowl portion 2 above the stationary interface of the accumulated water. In addition, the overhang portion 4 is
The wash water is prevented from jumping out from the inner wall surface of the bowl portion 2. Since the cleaning water that has become a bubble flow circulating on the inner wall surface of the bowl 2 stays on the inner wall surface of the bowl 2 for a long time,
Combined with the high cleaning power of the bubble flow itself caused by the high frequency vibration, the inner wall surface of the bowl portion 2 above the stationary interface of the accumulated water is strongly cleaned. A large number of air bubbles are dispersed and mixed in the cleaning water, so that the cleaning water required for cleaning the inner wall surface of the bowl portion 2 can be saved.

When the cleaning water is continuously discharged from the cleaning water discharge port 13 into the bowl portion 2 for a predetermined time, the S trap 3 is filled with dirty water and a siphon phenomenon occurs. Due to the siphon phenomenon, the dirty water in the bowl portion 2 is immediately discharged to the external discharge pipe via the S trap 3. The siphon phenomenon ends due to the air suction of the S trap 3, and the bubble mixing device 7
When the flush water is continuously discharged to the inside of the bowl portion 2 for a predetermined time, the electromagnetic valve 8 is closed, the flush water is discharged from the flush water discharge port 13, and the toilet flush is finished.

As can be seen from the above description, in the flush toilet according to the present embodiment, tap water pressure is used as an energy source, a bubbly flow is generated with a simple structure, and the bubbly flow is discharged as flush water. Thus, it is possible to save water for cleaning the inner wall surface of the bowl portion 2, to sanitize and quiet the inner wall surface of the bowl portion 2, and to enhance the cleaning power of the inner wall surface of the bowl portion 2.

By providing a device for introducing the cleaning agent into the air contact mixing chamber as an additional function, it is possible to create a bubbly flow having a stronger cleaning power. Further, by adding an fragrance to the cleaning agent, the scent can be contained in the bubbles, and the scent can be diffused at the same time when the bowl surface is ruptured and the bubbles are burst.

FIG. 6 shows a second embodiment. The washing water jets 17 having a plurality of openings make the water streams collide with each other toward the substantially central axis direction of the air contact mixing chamber 18 so that the colliding water streams become finer and air is mixed by the ejector action. Washing water spout 1 with multiple openings
By setting the angle of 7 to 20 degrees to 90 degrees, the cleaning water ejected from the cleaning water ejection opening 17 and the air introduced from the air introduction opening 19 can be discharged in an optimal mixed state. By the above action, the flush water can wash the bowl surface 2 of the flush toilet body 1 at an ideal flow rate, and the dirt can be quickly washed off. Further, since the cleaning water discharged from the cleaning water discharge port 13 is uniformly mixed with air, noise generated from the cleaning water discharge port 13 can be reduced.

FIG. 7 shows a third embodiment as a countermeasure for low pressure loss near the cleaning water jet 17. When the wash water pumped from the valve connection port 16 flows to the wash water jet port 17 having a plurality of openings, the opening upstream side end portion 27 of the wash water jet port 17 is gently connected to the wash water jet port upstream side pipe line 28. By adopting a structure in which the fluid is communicated with, it is possible to greatly reduce the pressure loss that occurs when the fluid flows in the tube having the unevenness.

FIG. 8 shows a method of fixing the cleaning water discharger.
In order to fix the flush water discharge device 7 to the mounting hole 23 opened in the flush toilet body 1, a nozzle insert collar 24 having an outwardly expanding diameter is inserted into the mounting hole 23, and a central opening portion of the nozzle insert collar 24 is inserted. The cleaning water discharger fixing portion 25 having the outer periphery screwed therein is screwed in while being rotated. At this time, since the lower part of the opening of the nozzle insert collar 24 is narrowed, the lower part of the nozzle insert collar 24 is expanded by screwing in the fixing part 25 of the flush water discharge device. As a result, there is no gap between the mounting hole 23 and the nozzle insert collar 24, and it is possible to adhere and fix them.

FIG. 9 shows a second fixing method for the cleaning water discharge device. When inserting the wash water discharge device fixing portion 25 of the wash water discharge device 7 into the nozzle insert collar 24, the screw portion 26 is not damaged even when tightened with high torque because only the screw portion 26 is a hard elastic body. Therefore, it can be securely tightened and can be more firmly fixed.

[Brief description of drawings]

FIG. 1 is a perspective view of a flush toilet including a “flushing device for flush toilet” according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the upper end of the bowl portion of the flush toilet including the “flushing device for flush toilet” according to the embodiment of the present invention.

FIG. 3 is a configuration diagram of a valve unit included in the “flushing device for flush toilet” according to the embodiment of the present invention.

FIG. 4 is a cross-sectional perspective view of an air bubble mixing device provided in a “flushing water discharge device for a flush toilet” according to an embodiment of the present invention.

FIG. 5 is a water droplet radiation dispersion state of washing water in the air contact mixing chamber of the bubble mixing device.

FIG. 6 is a cross-sectional perspective view of the jet angle at the washing water jet port of the bubble mixing device.

FIG. 7 is a cross-sectional perspective view of a low pressure loss countermeasure processing portion at the cleaning water jet port of the bubble mixing device.

FIG. 8 is a cross-sectional perspective view of a method 1 for fixing a bubble mixing device.

FIG. 9 is a cross-sectional perspective view of a bubble mixing device fixing method 2.

[Explanation of symbols]

1… Main body of flush toilet bowl 2 ... Bowl 3 ... S trap 4 ... Overhang part 5: Equipment storage compartment 6 ... Valve unit 7 ... Bubble mixing device 8 ... Electromagnetic valve 9 ... Constant flow valve 10 ... Water supply piping 11 ... Stopcock 12 ... Water pipe 13 ... Washing water outlet 14 ... Internal piping 15 ... Operating device 16 ... Valve connection port 17 ... Washing water spout 18 ... Air mixing contact chamber 19 ... Air inlet 20 ... Air introduction pipe 21 ... Step 22 ... Bubble flow transport pipe 23 ... Mounting hole 24 ... Insert color 25 ... Cleaning water discharge device fixing part 26 ... screw part 27 ... Opening upstream end 28 ... Pipeline on upstream side of wash water spout 29 ... upstream side pipe inner diameter 30 ... Valve connection port upstream side inner diameter

Claims (5)

[Claims] 1. Washing water supply means for supplying washing water, a washing water spout that communicates with the washing water supply means and spouts washing water, and an air introduction port that is open to the atmosphere and introduces air that is the outside air. , Communicates with the air introduction port, temporarily stores the introduced air, and makes contact between the jetted cleaning water and the stored air.
An air contact mixing chamber to be mixed, a step portion installed downstream of the air contact mixing chamber for colliding and retaining wash water, and a wash water discharge device fixing portion which is installed near this step portion and fixes the wash water discharge device In the flush toilet which is installed downstream of the fixed portion of the flush water discharge device and discharges the mixed flush water and air from the flush water discharge port opened to the atmosphere, the flush water outlet upstream side pipe line is expanded. A flush water discharge device for flush toilets characterized by the structure. 2. The flush water discharge device for a flush toilet according to claim 1, wherein the flush water spout has a structure in which an angle for colliding water streams in the case of a plurality of openings is 20 to 90 degrees. . 3. The flush water discharge of a flush toilet according to claim 1, wherein the flush water jet outlet has an opening upstream side end that is in smooth communication with the flush water jet outlet upstream side pipe line. apparatus. 4. A flush toilet comprising the flush water discharge device for flush toilet according to claim 1, wherein the flush water discharge device fixing portion is externally provided by inserting the flush water discharge device fixing portion. A flush toilet characterized by being fixed to the flush toilet with a nozzle insert collar fitted in a mounting hole of the flush toilet, the diameter of which is expanded in one direction. 5. The flush toilet bowl according to claim 4, wherein the nozzle insert collar is made of a plurality of elastic bodies having elasticity and hardness different from those of the flush water discharge device fixing portion.