JP2003090074A - Water closet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the problem described below in a water closet having a jet pump, when the duration of syphon is longer than the duration of jet pump, that is, it is longer than the period of rolling-in of water in a storage section due to the design of external appearance, the performance of internal configuration of trap or the like or water supply condition, water in the storage section disappears during the continuation of the syphon, and thus the jet flow becomes weak in the middle of syphon, and the function of supporting the jet current created by the jet pump becomes weak in the middle, and the function to support the dirt ejection by syphon is degraded and the function to support the dirt ejection by syphon is degraded and the dirt ejecting capacity is degraded in some case and this must be eliminated. SOLUTION: Timing for drive completion of the jet pump, that is, the timing for completing the state of turning the washing water prepared for dirt carrying of the ball portion into a fluid to be driven provided for the dirt carrying of the ball portion is located behind the completion timing of the syphon occurring in the water closet.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toilet bowl that cleans a toilet bowl by transporting filth inside the bowl of the toilet bowl to outside the toilet bowl with cleaning water.

[0002]

2. Description of the Related Art As the awareness of the importance of water resources increases, the demand for water saving of toilet bowls is increasing. At the same time, it is gaining recognition as a toilet as a living space, and in some cases, the water tank has been eliminated and a toilet bowl with a design that has never existed has been attracting attention from the market. As a water supply system for the toilet without a tank, there is a system shown in republished patent WO98 / 05829. That is, when the flush button for flushing the toilet bowl is pressed and the like, and the supply destination of the flush water is switched to the flush side of the bowl portion by the switching valve, the flush water is discharged from the discharge nozzles arranged in the jet conduit. Is discharged as a jet stream from. For this reason, the jet flow from this discharge nozzle causes the water in the zet water guide channel and the water in the wash water storage part to be discharged toward the inlet of the drain trap through the zet water guide channel like a jet spout by a jet pump. It As a result, a large amount of cleaning water is sent to the drain trap at a time with the amount of water being amplified, and the waste in the bowl begins to flow out.
With this configuration, unlike the so-called tank water supply system, a tankless toilet that does not have a water supply tank for flush water and that operates with a smaller instantaneous water supply flow rate than the so-called flush valve toilet has been made possible.

[0003]

Problem to be Solved by the Invention WO98 / 05829
In the jet pump with a built-in toilet shown in, the storage part is configured below the rim surface, specifically, on the back side of the bowl surface, and the water inside the storage part is entrained by the jet pump to the trap entrance. The water is discharged as a Zet flow.
The volume of this storage part is determined by the external design and dimensions of the toilet bowl. When cleaning filth, a jet stream created by a jet pump forms a siphon and discharges filth.The duration of the generated siphon depends on the so-called accumulated amount of water stored in the bowl surface and the siphon generated. Will be determined by the power of. In discharging the waste, the role of the zet flow is to form a siphon in the initial stage of the cleaning operation, and from the end of the siphon to the waste drawn by the siphon action,
Further pushing is required to promote the discharge, and after the siphon is finished, it is required to have an effect of pushing the waste that cannot be completely discharged by the siphon into the trap and discharging it. However, if the duration of the siphon is longer than the duration of the jet pump, that is, the time that the jet pump is entraining the water in the reservoir, the water in the reservoir will be exhausted during the continuation of the siphon, and the jet flow will form a siphon. Since it becomes weaker while pulling in filth, the function of supporting the effluent discharge by the siphon is reduced, and the situation may occur where the filth discharge capacity is reduced.
It should be noted that this state is related to the volume of the storage part, which is restricted by the external design of the toilet bowl, the internal configuration of the trap, the state of the siphon generated by the water supply conditions, and the like. In addition, since the connection position of the drain trap is higher than that of the underfloor drainage type in the above-ground drainage type toilet bowl, the water level difference for draining is not sufficient compared with the underfloor drainage type toilet bowl The power of the siphon is weak. Therefore, in the floor drain type toilet bowl, the support function for discharging waste by the above-mentioned zet flow becomes a more important condition, and weakening of the function becomes a problem related to the basic function of the toilet bowl. Therefore, in the present invention, by optimizing the relationship between the duration of the siphon and the driving time of the jet pump, that is, the time during which the jet pump entrains the water in the stored water, the underfloor drainage type toilet bowl or the floor drainage type toilet bowl The purpose was to propose a means for ensuring a suitable discharge function.

[0004]

Means for Solving the Problems and Actions / Effects In order to achieve the above object, the invention of claim 1 is a toilet bowl for transporting the waste in the bowl part of the toilet bowl to the outside of the toilet bowl by means of washing water. And a discharge member for discharging the cleaning water for transporting the cleaning water, and amplifying the flow rate of the cleaning water used for transporting the waste in the bowl portion when the cleaning water is discharged to the discharge member. A jet pump that has an amplifying unit that guides, and the amplifying unit uses the water supplied from a water supply source as a driving fluid, and the washing water prepared for the transfer of the filth in the bowl as a driven fluid, and jets both fluids together. In the toilet bowl having the above, the timing at which the jet pump ends the state in which the cleaning water prepared for the dirt transport of the ball portion is the driven fluid is more than the end timing of the siphon generated in the toilet bowl. Characterized in that it is a behind. According to the invention, in a toilet bowl having the jet pump, the jet pump creates a so-called ZET flow. This Zet flow forms a siphon and draws in dirt. At the same time, the waste flow is pushed by the Zet flow, and the waste flow is effectively discharged to the outside of the toilet by the action of these two flows. However, if the Zet flow becomes weak during siphon generation, the above-mentioned urging action of the filth becomes weak, so that the effect of discharging the filth decreases. Therefore, the end timing of driving the jet pump, that is, the timing when the jet pump ends the state in which the cleaning water prepared for the dirt transport of the ball portion is used as the driven fluid is the end of the siphon generated in the toilet bowl. Being behind the timing, in other words, the siphon draws the timing at which the water level of the washing water prepared for transporting the waste in the bowl reaches the upper edge of the inlet of the jet pump. By setting the water level inside the trap to the upper edge of the trap entrance and setting it behind the timing when the atmosphere enters the trap, it is possible to ensure that the filth is drawn in by the siphon and pushed in by the zet flow while the siphon continues. Therefore, it is possible to secure an effective sewage discharge state. In addition, unlike the zet flow of a normal tank type toilet bowl, the zet flow created by the jet pump can maintain a stable water force, so that the jet pump is used to convey the waste of the ball portion as described above. By setting the timing when the prepared wash water is used as the driven fluid to end after the end timing of the siphon generated in the toilet bowl, the residue that could not be discharged from the bowl during siphon generation remains. Due to the thick flow-amplified flow rate, it becomes possible to discharge the waste into the drain pipe connected to the toilet bowl more effectively than the direct flow from the water supply source.

The invention according to claim 2 is the toilet bowl according to claim 1, wherein the jet pump ejects water supplied from the water supply source, and the drive nozzle corresponding to the drive nozzle. A throat that forms a passage for both fluids and guides both fluids to the discharge member, and a ratio value d / D between the nozzle diameter d of the drive nozzle and the throat diameter D of the throat is about 0. It is characterized by being set to 7 to 0.9. Generally, a jet pump has a parameter, which is a ratio of a diameter d of a drive nozzle and a diameter D of a throat, which is a constituent element of the jet pump, and a flow rate ratio which is a ratio of a driving fluid to inject a driven fluid and a jet pump. The head ratio, which is the ratio of the total head and the head of the discharge flow from the jet pump, changes. When d / D approaches 1,
It is known that the flow ratio tends to decrease and the lift ratio tends to increase. In the discharge state, the ratio of entrained driven fluid decreases and conversely the discharge pressure of the flow entrained driven fluid increases. . Therefore, the value of d / D is set to a value close to 1, specifically, 0.7 to 0.9, and a measure is taken to extend the time for entraining the driven fluid by reducing the flow rate ratio. Thus, the timing at which the above-described jet pump ends the state in which the cleaning water prepared for transporting the dirt of the ball portion as the driven fluid is set to be later than the ending timing of the siphon generated in the toilet bowl. it can.

A third aspect of the invention is the toilet bowl according to the second aspect, wherein the throat length L of the jet pump is about 3 to 6 times the throat diameter D of the throat. To do. In the case where the above d / D is to be close to 1, if the same instantaneous flow rate is secured by increasing the nozzle diameter d of the jet pump, the energy given from this nozzle becomes small, so D becomes small. Although it is preferable to do so, the area for pushing the filth or sewage will be reduced accordingly, and the discharge of filth will be affected. Therefore, the length L of the throat is set to about 3 to the diameter D of the throat.
By making it 6 times, the velocity distribution inside the throat is averaged. As a result, a uniform flow can be produced by using the full aperture, so that it is possible to ensure the effect of pushing dirty water and dirt even when the throat diameter is reduced as described above.

The invention according to claim 4 is the toilet bowl according to claim 2, further comprising a drain trap for discharging the accumulated water accumulated in the bowl portion to the outside, and the jet pump is
The drainage trap is arranged so as to be oriented from the rising portion of the rising pipe to the pipeline of the rising pipe. Here, by arranging the jet pump from the rising portion of the drain trap so as to point to the pipeline of the rising pipe, the rising pipe can be regarded as the throat portion and the water discharge port of the jet pump can be regarded as the nozzle portion. it can. The jet pump includes a drive nozzle that ejects water supplied from the water supply source, and a throat that forms a passage for the both fluids corresponding to the drive nozzle and guides the two fluids to the ejection member. And the drive nozzle and the throat are
When the ratio value d / D of the nozzle diameter d of the drive nozzle and the throat diameter D of the throat is configured to be about 0.7 to 0.9, the form of the discharge flow from the jet pump is: As compared with the case where d / D is smaller than the above range, the above-described lift ratio, that is, the discharge pressure becomes higher, and the pressure energy transmitted in the trap becomes higher. As a result, the action of drawing in sewage and dirt is enhanced by the ejector effect generated when the flow discharged from the jet pump enters the drain trap.

The invention according to claim 5 is the toilet bowl according to claim 4, wherein the ratio D / K of the throat diameter D of the throat and the conduit diameter K of the rising pipe is about 0.1 to 0. It is characterized by being set to .3. According to claim 4, by disposing the jet pump from the rising portion of the drain trap so as to point to the pipeline of the ascending pipe, the ascending pipe can be regarded as a throat part and the water discharge port of the jet pump can be regarded as a nozzle part. Although the relationship that can be achieved is shown, the throat and the rising pipe have a ratio D / K of the ratio between the throat diameter D of the throat and the pipe diameter K of the rising pipe that is sufficiently smaller than 1, specifically, By setting it to about 0.1 to 0.3, this jet pump configuration has the characteristic that the above-mentioned flow rate ratio is set high. That is, a large amount of sewage, which is the non-driving fluid, is drawn in, so that the effect of discharging sewage and sewage can be set high.

The invention according to claim 6 is the toilet bowl according to claim 1, characterized in that the direction of the drain trap outlet is substantially horizontal to the floor surface. In the above-ground drainage type, since the connection position of the drainage trap is higher than that in the underfloor drainage type, the generated siphon power is weak. Therefore, at the end of the siphon, that is, when the water level in the bowl surface pulled by the siphon reaches the upper edge of the trap entrance and the atmosphere enters the trap, the effluent discharge capability is similar to the underfloor drainage type toilet bowl. It becomes significantly weaker than. However, the timing at which the above-mentioned jet pump ends the state in which the cleaning water prepared for conveying the filth of the ball portion as the driven fluid is ended after the end time of the siphon generated in the toilet bowl. By doing so, the decrease in the discharge capacity at the end of the siphon can be complemented by the stable ZET flow created by the jet pump, and the discharge capacity of the waste can be secured.

The invention of claim 7 is the toilet bowl according to claim 6, wherein the height of the center position of the drain trap outlet is in the range of 100 mm to 200 mm from the floor surface, and the valve portion for supplying water is provided in the toilet bowl. It is characterized by being stored in the rear storage part. In the so-called floor drainage type, the decrease in discharge capacity at the end of the siphon is always a problem, but the timing at which the state where the jet pump uses the cleaning water prepared for conveying the waste in the bowl as the driven fluid ends Is set to be after the end timing of the siphon generated in the drain trap, the decrease in siphon force can be complemented by the jet flow created by the jet pump. Also, by ensuring that the height of the center of the drain trap outlet is 100 mm or more from the floor, the workability when installing the toilet can be greatly improved, and the valve for water supply can be stored in the storage part at the rear of the toilet. , It will look good and you can take measures against mischief when installed in public toilets.

The invention according to claim 8 is the toilet bowl according to claim 6, wherein the height of the center position of the outlet part of the drain trap is in the range of 100 mm to 200 mm from the floor and the bottom part is closed. It is characterized by being wall-mounted. In the floor drainage type, the decrease in discharge capacity at the end of siphoning always poses a problem, but the timing at which the state where the jet pump is used as the driven fluid is the wash water prepared for the transfer of the filth in the bowl is ended. By setting the siphon generated at the drain trap to be after the end timing of the siphon, the decrease in siphon force can be complemented by the jet flow created by the jet pump. Also, by ensuring that the height of the center of the drain trap outlet is 100 mm or more from the floor surface, the workability at the time of mounting the toilet can be greatly improved, and at the same time the so-called wall-mounted toilet bowl whose bottom is closed. By doing so, it is possible to improve usability such as cleanability and approach in a wheelchair.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a first embodiment of the present invention, showing an end face of a flush toilet bowl cut along the center line, and FIGS. It is a time series showing the movement of the flush water in the toilet bowl shown in. In the flush toilet shown in FIG. 1, a so-called toilet bowl portion is composed of a bowl portion 11 and a storage portion 14 formed on the back side of the bowl portion 11, and the storage portion 14 further includes a jet pump 1 in between. And is connected to the accumulated water in the bowl 11. A packing 3 is attached to the jet pump 1 to block inflow / outflow of water from around the mounting portion of the jet pump 11.

The pressurized cleaning water supplied from the water supply pipe 7 is distributed to the rim water supply pipe 9 and the jet water supply pipe 2 by the water supply valve 8. The cleaning water valve 8 may be a sequential valve, and the pressurized cleaning water may be switched between the rim water supply pipe 9 and the jet water supply pipe 2 to discharge water. The pressurized cleaning water supplied to the rim water supply pipe 9 passes through the rim water passage 17 and is discharged from the rim water spray port 23 to clean the bowl portion 11. At this time, the pressurized cleaning water supplied to the jet water supply pipe 2 is injected into the jet pump 1. FIG. 6 is an enlarged view of the periphery of the jet pump 1 shown in FIG. 1 so that the structure of the jet pump 1 and its mounting state can be seen. The pressurized cleaning water supplied from the jet water supply pipe 36 is jetted into the gap 32 through the jet nozzle 33, passes through the throat 31, and is discharged to the bowl surface 39 as a so-called zet flow. In this process, the water stored in the storage section 40 through the gap 32 is used as a driven fluid and is drawn in by the ejector effect, so that the amount of water is amplified. By changing the value d / D of the ratio between the nozzle diameter d of the jet nozzle 33 and the throat diameter D of the throat 31, the instantaneous flow rate of the flow discharged from the throat 31 and the discharge pressure can be changed. For example, d /
When D is close to 1, the flow rate ratio decreases and the lift ratio, that is, the discharge pressure increases. In the flow at this time, the ratio of the driven fluid stored in the storage section 40 being involved is reduced, and the discharge pressure is increased. This means that the jet pump 1 can change the characteristics of the jet flow.

The action of the jet pump can be continued until the driven fluid can no longer be taken in. Therefore, in FIG. 6, the reservoir 40 is moved from the gap 32 until the water level on the reservoir surface reaches the throat upper edge position 42. The water of the jet pump is taken in and the function of the jet pump continues. Since the atmosphere opening port 16 is provided above the storage unit 14 in FIG. 1, even if the water stored in the storage unit 8 is drawn by the jet pump 1, the inside of the storage unit 14 maintains the atmospheric pressure. Since it does not become a negative pressure, the action of the jet pump can be stably ensured.

The flow discharged from the jet pump 1 as a zet flow enters the drain trap 4 and produces a siphon action. By this siphon action, the dirty water stored in the bowl portion 11 is drawn in, and the bowl portion reservoir surface 12 is lowered. This will be described below with reference to FIGS. 1 to 5. FIG. 1 shows an initial state in which the cleaning water is not yet supplied. That is, the pressurized cleaning water is not supplied to the jet pump 1, the stored water of the bowl portion 11 and the stored water of the storage portion 14 communicate with each other through the water discharge port of the jet pump 1, and above the storage portion 14. Since the atmosphere opening port 16 is provided, the bowl surface water level 12 and the reservoir water level surface 15 have the same water level.

In FIG. 2, pressurized cleaning water is supplied to the jet pump 1, and the water discharged from the water discharge port of the jet pump 1 is amplified by the ejector effect to the rising pipe of the drain trap 4 as a so-called zet flow. It shows a situation in which a siphon state is formed in the drain trap 4 while spouting and entraining the accumulated water in the bowl 11. Since the generated siphon strongly draws the stored water in the bowl portion 11, the position of the bowl surface water surface 12 goes down, but the gap around the jet pump 1 is filled with the packing 3, so that the jet pump 1 While water is being discharged from the water outlet, the communication between the storage portion of the bowl surface 11 and the storage portion 14 is lost. Therefore, the descending speed of the reservoir water surface 15 is not related to the descending speed of the bowl water surface 12, and the jet flow from the jet nozzle 33 shown in FIG.
It is determined by the amount of the stored water in the storage unit 40 that is involved via the two.

In FIG. 3, due to the generated siphon, the water level of the bowl surface 12 is set to the upper edge position 2 of the trap suction port.
The figure shows a situation where the atmosphere is sucked in when the temperature drops below 1 and the siphon ends. In FIG. 6, the trap suction port upper edge position 41 is shown. Here, the drive end timing of the jet pump 1, that is, the timing at which the jet pump 1 ends the state in which the cleaning water prepared for the waste transport of the bowl portion 11 is the driven fluid is generated in the toilet bowl. In other words, the water level of the washing water prepared for the transfer of the waste of the ball portion 11, that is, the storage surface 15 of the storage portion is the upper edge position 4 of the throat portion in FIG.
As the timing to reach the throat upper edge position 22 shown as 2, the timing is set after the timing when the water level of the bowl reservoir surface 12 reaches the trap suction port upper edge position 21 and the atmosphere enters the drain trap 4. There is. With this setting, while the siphon continues, the filth is surely received by the siphon and pushed by the Zet flow, so that an effective filth discharge state can be secured.

In FIG. 4, after the siphon is finished, the bowl portion 11
The filth remaining inside is effectively drained by the so-called Zet flow whose water amount is amplified by the jet pump 1.
Show that it can be pushed inward. The duration of this state can be set by adjusting the capacity of the stored water in the storage unit 14 and the amount of the stored water entrained by the jet pump 1.

In FIG. 5, the reservoir surface 15 reaches the upper edge position 42 of the throat shown in FIG. 6 and continues to discharge the water discharged from the jet nozzle 31 through the throat 20 even after the function as the jet pump is completed. Indicates that the fine dirt remaining in the bowl portion 11 can be discharged by the flow from the jet nozzle 31.

Further, FIG. 6 shows a modification of the first embodiment. The water discharge port of the jet pump 30, that is, the throat 31 is arranged from the rising position of the drain trap 37 toward the pipeline of the rising pipe. As described above, the instantaneous flow rate of the flow discharged from the throat 31 and the discharge pressure are changed by changing the value d / D of the ratio of the nozzle diameter d of the jet nozzle 33 and the throat diameter D of the throat 31. be able to. FIG. 7 is a graph showing the relationship. The horizontal axis of the graph is d / D, and the vertical axis is
Flow rate ratio, that is, the ratio Qs / Qj of the discharge flow rate Qj discharged from the jet nozzle 33 and the flow rate Qs sucked into the throat 31 from the storage section 40, and the head ratio, that is, the water head from the jet nozzle 33 and the storage section 40. The ratio H / He of the total head H of the head of water and the head of water discharged from the throat 31 and the head He of water discharged from the throat 31 is taken. In a general jet pump, these d / D, Qs / Qj, H /
As shown in FIG. 7, it is known that as d / D of He approaches 1, the lift ratio increases and the flow ratio decreases. That is, when this relationship is applied to the present invention,
When d / D is small, the flow discharged from the throat 31 can output a larger flow rate, but the discharge pressure is smaller, and when d / D is larger, the flow discharged from the throat 31 is larger. However, the discharge flow rate becomes smaller. By decreasing the flow rate ratio Qs / Qj, it is possible to extend the time during which the jet pump 30 takes in the water stored in the storage section 40 as a driven fluid. Further, since the discharge pressure becomes high at the same time, the energy transmitted through the jet water supply pipe 36 can be transmitted to the depth of the suction port of the drain trap 37 in the form of pressure energy. Therefore, in FIG. 6, the value d / D of the ratio between the nozzle diameter d of the jet nozzle 33 and the throat diameter D of the throat 31 is set to 0.7. From FIG. 7, if the value d / D of the ratio of the nozzle diameter d of the jet nozzle 33 and the throat diameter D of the throat 31 is in the range of about 0.7 to 0.9, the flow rate ratio Qs / Qj is Drop, jet pump 30
However, it can be seen that it is possible to extend the time for driving by driving the driven fluid stored in the storage section 40. As a result, the timing at which the jet pump 30 ends the state in which the cleaning water prepared for transporting the dirt of the ball portion 39 as the driven fluid ends is after the end timing of the siphon generated in the drain trap 37. Therefore, the function of discharging filth is improved. Further, since it is not necessary to change the volume of the storage section 40, it is possible to secure the appearance design and the like of the toilet bowl.

In order to increase the value of d / D shown in FIG. 6, it is conceivable to decrease the inner diameter D of the throat 31 or increase the inner diameter d of the jet nozzle 33. However, when d is increased, if the water supply conditions are the same, the flow velocity of the discharge flow from the jet nozzle 33 decreases, and the kinetic energy that can be transmitted to the drain trap 37 decreases. The smaller the value, the better. However, if the discharge flow from the throat 31 is as thick as possible, it will be easy to contact and move the filth, so it is preferable to create a flow that uses the full inner diameter of the throat 31. Therefore, in FIG.
By setting the length of 1 to be about four times the throat diameter D, the velocity distribution inside the throat 31 is averaged, and the throat 31
Velocity distribution of the discharge flow from the outlet of the
We make a flow using the full inner diameter of 1 to ensure the effect of maintaining sewage and dirt. In addition, throat 31
The same effect can be obtained as long as the length is in the range of about 3 to 6 times the throat diameter D.

Further, in FIG. 6, the jet pump 30
Is arranged from the rising portion of the drain trap 37 so as to be oriented to the pipeline of the ascending pipe,
Can be likened to the throat portion and the throat 31 to the nozzle portion. At this time, the nozzle diameter d of the jet nozzle 33
The value d / D of the ratio between the throat diameter D and the throat diameter D of the throat 31 is configured to be a numerical value within the range, for example, about 0.7,
The timing at which the jet pump 30 ends the state in which the cleaning water prepared for conveying the dirt of the ball portion 39 is used as the driven fluid can be set to be after the ending timing of the siphon generated in the drain trap 37. At the same time, the value D / K of the ratio between the throat diameter D of the throat 31 and the ascending pipeline diameter K of the drain trap 37 is set to about 0.12, and the jet pump 30 has a characteristic that the flow rate ratio is set high, and the bowl portion 39 The large amount of sewage stored in the jet pump 30 is used as a driven fluid for the jet pump 30 to enhance the effect of discharging sewage and filth. As can be seen from FIG. 7, if the D / K is in the range of about 0.1 to 0.3,
It is possible to give the jet pump 30 a characteristic in which the flow rate ratio is set high.

FIG. 8 shows a second embodiment of the present invention. The drain trap 52 is horizontal to the floor surface at a drain trap outlet 61, which is the outlet thereof, and is joined to the drain pipe opened on the wall surface. In the so-called floor drainage type as shown in FIG. 8, the decrease in the discharge capacity at the end of the siphon is always a problem, but the jet pump 50 uses the cleaning water prepared for conveying the waste of the ball portion 57 as the driven fluid. By setting the timing at which the state of turning on ends to be after the ending timing of the siphon generated in the drain trap 52, the decrease in siphon force is complemented by the Zet flow created by the jet pump 50. Further, by ensuring that the height of the center position of the drain trap outlet portion 61 is 100 mm or more from the floor surface, the workability at the time of mounting the toilet bowl can be greatly improved, and the valve portion 55 for supplying water can be stored in the storage portion 54 at the rear portion of the toilet bowl. By doing so, if you want to improve the appearance of the toilet bowl as a whole and install it in a public toilet, etc.,
It also serves as a countermeasure against mischief for the water supply device.

FIG. 9 shows a third embodiment of the present invention. By ensuring that the height of the central position of the drain trap outlet 83, which is the connecting portion of the drain trap 81, is 100 mm or more from the floor surface, the workability at the time of mounting the toilet can be greatly improved, and the valve portion 75 for supplying water can be installed at the rear portion of the toilet. By storing it in the storage part 74 of the
In addition, when it is installed in a public toilet or the like, it becomes possible to take measures against mischief with the water supply device. In addition, since the wall-mounted toilet bowl has a shape in which the bottom of the toilet bowl portion 82 is closed, it is possible to improve cleanability and usability such as approaching in a wheelchair, and to use drainage pipes when attaching the toilet bowl. The workability of joining the drain trap 81 is improved. When the bottom of the toilet bowl portion 82 is closed in this way, a separate component such as the jet water supply pipe 2 shown in FIG. 1 cannot be used structurally, so the jet pump 70 in FIG. Is inserted into and fixed to a jet water conduit 71 integrally formed with a toilet body connected to a water supply valve 75 via a jet water supply pipe 72.

[Brief description of drawings]

FIG. 1 is an end view of a toilet bowl showing a first embodiment of the present invention.

FIG. 2 is an end view of the toilet bowl according to the first embodiment of the present invention, showing a state in which a siphon is formed and waste is discharged.

FIG. 3 is an end view of the toilet bowl showing the first embodiment of the present invention, showing a state just before the end of the siphon.

FIG. 4 is an end view of the toilet bowl according to the first embodiment of the present invention, showing a state where the jet pump is driven with the siphon completed.

FIG. 5 is an end view of the toilet bowl showing the first embodiment of the present invention, showing a state in which the siphon ends and the jet pump entrains no driven fluid.

FIG. 6 is an enlarged view of a jet pump and its vicinity in an end view of the toilet bowl shown in FIGS. 1 to 5.

FIG. 7 is a graph showing the relationship between d / D, which is a jet pump parameter, and Qs / Qj and H / He.

FIG. 8 is an end view of a toilet bowl showing a second embodiment of the present invention.

FIG. 9 is an end view of a toilet bowl showing a third embodiment of the present invention.

[Explanation of symbols] d ... Nozzle diameter D ... Throat diameter K ... Pipe diameter of riser 1, 30, 50, 70 ... Jet pump 2,36,51,72 ... Jet water pipe 3,34 ... packing 4,37,52,81 ... Drain trap 5,38 ... Trap suction port 6 ... Drainage socket 7,53,73 ... Water supply pipe 8,55,75 ... Water supply valve 9,56,76 ... Rim water supply pipe 10, 54, 74 ... Storage 11,39,57,77 ... Bowl 12 ... Bowl surface 13 ... filth 14,40,60,80 ... Reservoir 15 ... Reservoir surface 16,59,79 ... Atmosphere opening 17 ... Rim waterway 18,58,78 ... rim 19 ... Bowl part initial water level 20 ... initial position of reservoir surface 21, 41 ... Trap suction port upper edge position 22, 42 ... Upper edge position of throat part 23 ... Rim water spout 31 ... Throat 32 ... Gap 33 ... Jet nozzle 35 ... packing 61 ... Drain trap outlet 71 ... Jet headrace 82 ... Toilet bowl 83 ... Drain trap outlet

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Mitsuhiro Suenaga             2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City, Fukuoka Prefecture             No. Totoki Equipment Co., Ltd. F-term (reference) 2D039 AA02 AC04 AD04 CA01

Claims (8)

[Claims] 1. A urinal for transporting filth in a bowl part of a toilet bowl to the outside of the urinal by flushing water, and a discharge member for discharging flush water for transporting the filth, and when the flush water is discharged. Further has an amplifying means for amplifying the flow rate of the wash water used for transporting the waste in the bowl portion and guiding the wash water to the water discharge member, wherein the amplifying means drives the water supplied from the water supply source to the driving fluid. In a toilet bowl having a jet pump that mixes and jets both fluids by using the cleaning water prepared for the filth transport of the bowl as a driven fluid, the jet pump is prepared for the filth transport of the ball. The timing of ending the state where the wash water is the driven fluid is
A toilet bowl that is behind the end timing of the siphon that occurs in the toilet bowl. 2. The toilet bowl according to claim 1, wherein the jet pump ejects water supplied from the water supply source, and a passage through which the two fluids pass corresponding to the drive nozzle. And a throat that guides both of the fluids to the discharge member, and has a nozzle diameter d of the drive nozzle.
And a value d / D of the ratio between the throat diameter and the throat diameter D of the throat is about 0.7 to 0.9. 3. The toilet bowl according to claim 2, wherein the throat length L of the jet pump is about 3 to 6 times the throat diameter D of the throat. 4. The toilet bowl according to claim 2, further comprising a drain trap for discharging the accumulated water stored in the bowl portion to the outside, wherein the jet pump is provided with a rising pipe of the drain trap. A toilet bowl arranged from the rising point toward the conduit of the rising pipe. 5. The toilet bowl according to claim 4, wherein a ratio value D / K between the throat diameter D of the throat and the conduit diameter K of the rising pipe is about 0.1 to 0.3. Toilet bowl. 6. The toilet bowl according to claim 1, wherein the direction of the drain trap outlet is substantially horizontal to the floor surface. 7. The toilet bowl according to claim 6, wherein the height of the center position of the drain trap outlet is 100 m from the floor surface.
A toilet bowl with a water supply valve in the range of m to 200 mm, which is stored in the storage part at the rear of the toilet. 8. The toilet bowl according to claim 6, wherein the height of the center position of the drain trap outlet is 100 m from the floor surface.
The toilet bowl is characterized in that it is in the range of m to 200 mm, its bottom is closed, and it is wall-mounted.