JP2004156382A - Toilet bowl - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve a function of a toilet bowl equipped with a tank storing flushing water. <P>SOLUTION: A toilet bowl flushing tank device 207 provided on the inside of a flushing water tank 200 has a jet pump 13 submerged in the flushing water in the tank and downstream piping 214 following that. The downstream piping 214 is equipped with a rising pipe line 214b slantly lifted from a throat 132 and a lowering pipe line 214d in the downstream side, and the flushing water is led to a rim water-way 16b from a water outlet 214e. The jet pump 13 pumps injected flushing water together with the flushing water in the tank into the downstream piping 214, and a siphon function is induced to the downstream piping 214. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a toilet provided with a tank for storing flush water, and for flushing toilet bowls with flush water guided from the tank via a supply path.
[0002]
[Prior art]
In a general toilet, a method of storing washing water in a washing water tank disposed above the toilet and using a head for discharging the washing water to the toilet has been adopted. However, in recent years, various cleaning methods have been proposed as well as simply utilizing the head of the cleaning water.
[0003]
One example of such a cleaning method proposes a cleaning method for increasing the flow rate of the cleaning water when discharging the cleaning water using the head of the cleaning water as described above (for example, see Patent Document 1). In this cleaning method, a jet pump having an injection nozzle is submerged in a cleaning water tank, and cleaning water in the tank is supplied along with jetting of cleaning water from the jet pump. In this cleaning method, the discharge flow rate of the cleaning water is increased as compared with a cleaning method using only a head, so that the size of the entire tank can be reduced. Since the size of the tank can be reduced in this way, it is possible to save water for washing the toilet. In addition, although it is sufficient to supply flush water directly from the water supply source (for example, a water pipe) to the spray nozzle, it is sufficient to blow out the working water with the supply water, so that the flush water can be supplied to the toilet even at a relatively low supply pressure. Has been realized.
[0004]
[Patent Document 1]
International Publication No. WO01 / 23678 pamphlet
[0005]
[Problems to be solved by the invention]
However, there is still room for improvement in such a cleaning method using a jet pump, and there is a demand for further saving water and securing cleaning performance at a low water supply pressure.
[0006]
The present invention has been made in order to solve the above problems, and has as its object to improve the function of a toilet having a tank for storing flush water.
[0007]
[Means for Solving the Problems and Their Functions and Effects]
In order to solve at least a part of such a problem, the toilet of the present invention includes:
A toilet having a tank for storing washing water, wherein the toilet is cleaned with washing water guided from the tank via a supply path,
When sending the flush water in the tank to the toilet, the siphon action is induced in the supply path to guide the flush water to the toilet.
It is characterized by the following.
[0008]
In the toilet of the present invention having the above configuration, when supplying the flush water from the tank to the toilet, a siphon action is induced in the supply path to the toilet. For this reason, the flush water is supplied to the toilet by forcible suction of the flush water in the tank by the induced siphon action, and the flush water level reaching the toilet can be increased only by the forced suction. Therefore, the toilet can be washed with high water flushing water, and the washing ability can be improved. In addition, since a high water force can be obtained, it is possible to save water for washing water. Furthermore, since it is sufficient to supply energy capable of inducing a siphon action at the beginning of cleaning, energy for supplying cleaning water over the cleaning period is not required, and energy can be saved accordingly. If this energy is obtained by washing water supply, the amount of water supply can also be reduced and water saving can be promoted.
[0009]
The above-mentioned toilet of the present invention can also adopt the following modes. That is, the supply path is
An inlet submerged in the washing water of the tank,
A water outlet which is located lower than the water inlet and communicates with a flush water path of the toilet;
A supply pipe that rises from the water inlet to exceed the full water level of the tank and then falls to reach the water outlet,
The tank is
It is possible to have a washing water supply mechanism that sends washing water in the tank toward the water inlet and induces a siphon action in the supply pipe.
[0010]
In this case, the height difference between the water inlet and the water outlet, and the induction of the siphon action by the flush water supply mechanism, can surely induce the siphon action and supply the flush water to the toilet, which is preferable.
[0011]
In addition, the supply line is
An upstream side of the water outlet may be configured to have a pipe configuration that is bent from a location lower than the water outlet to the water outlet so that washing water is stored when not being washed.
[0012]
In this way, before the induction of the siphon action, the supply pipeline is closed by the stored cleaning water in the bent portion of the pipeline and the cleaning water in the tank on the water inlet side, and the air remains. Will be. Therefore, if the remaining air in the pipeline is pushed to the outflow side by the washing water from the water inlet, a siphon action can be induced in the supply pipeline. In this way, when the washing water is stored in the bent portion of the pipeline and the cleaning water remains, the backflow of the air from the water outlet can be prevented. All of the air inside can be easily pushed out to the outflow side by the washing water from the water inlet. As a result, the siphon action can be easily induced in the supply line, which is preferable.
[0013]
Further, the washing water supply mechanism includes:
A jet pump having an injection nozzle and submerged in washing water in the tank,
An injection nozzle water supply unit that supplies operating water to the injection nozzle and jets out operating water from the injection nozzle,
The washing water in the washing water tank may be caused to flow into the water inlet with the ejection of the washing water from the injection nozzle.
[0014]
In this way, the working water supplied by the water supply unit for the injection nozzle is jetted from the injection nozzle, causing the flow of the jetted cleaning water to flow into the water inlet, and the washing water in the cleaning water tank flowing into the water inlet due to the ejector action accompanying this. Let it. The washing water that has flowed into the water inlet in this way pushes out the air in the supply pipe, and reliably induces a siphon action in the supply pipe. Therefore, by the supply of the cleaning water at the high water force as described above, it is possible to surely achieve the effects of improving the cleaning performance and saving the cleaning water. Moreover, once the induction of the siphon action is completed, even if the supply of the working water from the water supply unit for the spray nozzle to the spray nozzle is stopped, the washing water in the tank can be supplied to the toilet by the siphon action thereafter. Therefore, the supply amount of working water can be reduced, and water saving can be promoted accordingly.
[0015]
Also, at the beginning of the induction of the siphon action, the flush water from the spray nozzle and the flush water in the tank can be poured into the supply pipe together. Therefore, it is possible to reliably increase the amount of washing water supplied to the toilet at the start of washing, and to further increase the water level at the beginning of washing.
[0016]
When the jet pump is employed as described above, a throat disposed opposite to the injection nozzle can be connected to the water inlet. In this case, the flushing water (operating water) from the ejection nozzle directly flows into the throat disposed opposite to the ejection nozzle without deceleration. In addition, it does not cause a situation in which the flushing water flows off the throat. As a result, the ejector action is induced with high efficiency, and the tank washing water around the jet pump submerged in the washing water tank is sucked in with the ejection of the washing water from the injection nozzle and flows into the throat. After this throat, the jet washing water and the tank washing water flowing into the throat flow into the supply pipe to more reliably induce the above-described siphon action.
[0017]
Further, the water supply unit for the injection nozzle may have a backflow avoiding valve for preventing the backflow of the washing water from the side of the injection nozzle. In this way, it is possible to prevent the wash water in the wash water tank from flowing back through the jet pump to the water supply unit for the injection nozzle and the upstream side primary water supply pipe. In this case, it is convenient to use a so-called vacuum breaker that opens the inside of the valve to the atmosphere as the check valve.
[0018]
In addition, the toilet bowl that receives the supply of cleaning water includes a rim formed so as to surround the bowl portion of the toilet bowl with an upper edge, and from the rim, a rim discharge water capable of discharging cleaning water along the surface of the ball portion. Have a mechanism,
The supply path may be connected to the rim water discharge mechanism.
[0019]
In this case, the tank cleaning water can be passed from the tank without any trouble to the rim water discharging mechanism, and the toilet can be washed by the rim water discharging. Further, the tank of the present invention can be applied to an existing toilet, and the performance can be improved.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described based on examples. FIG. 1 is a perspective view showing a toilet room in which the toilet 10 of the embodiment is installed, and FIG. 2 is a longitudinal sectional view of the toilet 10 and its washing water tank 200, showing the state of washing water storage and the arrangement of the jet pump 13 and the like. FIG. 3 is an explanatory view for explaining the internal equipment arrangement when the main part of the tank is viewed in a horizontal cross section, and FIG. 4 is an explanatory diagram for explaining the internal equipment arrangement when also viewing the main part of the tank in a vertical cross section. FIG.
[0021]
As shown in the figure, the toilet bowl 10 includes a toilet seat 11a and a toilet lid 14 on the upper edge of the ball portion 11, and is installed substantially at the center of the toilet room. A toilet storage box 40 is provided at the back of the toilet 10 in the toilet room. Note that the toilet seat 11a may be a cleaning toilet seat with a local cleaning function.
[0022]
The toilet storage box 40 stores therein a washing water tank 200 and a cleaning tool (not shown) for toilet cleaning, which will be described later, and also stores toilet paper and the like. The toilet storage box 40 includes a front panel 50 erected at the rear of the toilet 10 and right and left cabinets 60R and 60L arranged on both left and right sides thereof. A central portion of the cabinet upper surface is a hand-washing counter 80, in which a hand-washing sink 82 for receiving washing water discharged from a hand-washing curan 81 is incorporated.
[0023]
The area below the hand washing counter 80 is a storage area for the washing water tank 200, and a water supply pipe is provided in the storage box for the toilet to the tank, the hand washing curan 81 and the above-mentioned washing tool. The toilet 10 has a tank mounting portion (not shown) at the rear of the toilet, and the washing water tank 200 is placed and fixed on the tank mounting portion.
[0024]
The toilet 10 is a ceramic siphon-type toilet, and has a ball portion 11 and a siphon trap 15 having one end communicating with the bottom of the ball portion 11, as shown in FIG. In addition, as a configuration for discharging flush water to the ball portion 11 at the time of flushing the toilet, a rim 16 surrounding the upper edge of the ball portion 11 and having an annular rim water passage 16b inside is provided. A large number of water discharge holes 16a are formed on the bottom wall of the rim water passage 16b at intervals in the circumferential direction, and the cleaning water is discharged from the water discharge holes 16a to the ball unit wall surface. The other end of the siphon trap 15 is connected to a drain pipe (not shown). When the inside of the trap becomes full, the siphon trap 15 exerts a siphon action to drain the excrement discharged from the ball portion 11 together with the stored water in the ball and the supply cleaning water. Drain into pipe.
[0025]
The flush water tank 200 houses and arranges a toilet flush tank device 207 in an internal area 205 thereof. In the toilet flush tank device 207, the primary pipe 20 connected to a water supply source (water pipe) (not shown) is drawn directly into the internal region 205 of the tank. The primary side pipe 20 is connected to the water stop valve 9. The toilet flush tank device 207 is provided with a pressure reducing valve 21, a flush valve 211 and a pipe 12 in a pipe line after the water stop valve, and connects the pipe 12 to an injection nozzle 131 of the jet pump 13.
[0026]
Since the pressure reducing valve 21 is provided upstream of the jet pump as described above, there are the following advantages. The pressure reducing valve 21 not only makes the flow of the washing water flowing through the pipe line constant but also supplies the washing water to the downstream jet pump 13 at a constant water pressure. The toilet 10 of the present embodiment is intended to improve the supply and the cleaning capacity of the flush water to a suitable toilet under a low water supply pressure as described later. The area of application of the toilet bowl can be expanded.
[0027]
As shown in FIG. 2, the jet pump 13 is installed submerged in the washing water stored in the washing water tank 200 so as to be directed obliquely upward. A downstream pipe 214 described later is connected to the throat 132 in accordance with the direction of the throat 132. Prior to the description of the flush water supply system to the toilet including the jet pump 13, the water supply system will be described.
[0028]
The flash valve 211 has a vacuum breaker 212 in the secondary passage. Therefore, even if a backflow of the cleaning water from the jet pump 13 side to the flash valve 211 side occurs due to some cause (for example, generation of a negative pressure in the primary pipe upstream of the flash valve 211), the vacuum breaker 212 Thus, the backflow is eliminated. Note that the above valves including the flush valve 211 are fixed at a position above the flush water level WS as shown in the figure.
[0029]
The valve opening knob 213 of the flash valve 211 is connected to a conversion mechanism 220 that converts a forward / reverse rotation operation into a straight-ahead operation. The conversion mechanism section 220 includes a rotation transmission body 221. The rotation transmission body 221 rotates forward and backward following an operation handle 25 provided on the front panel 50 of FIG. 1 and operated at the time of cleaning. I have. Therefore, the conversion mechanism 220 is configured to push the valve opening knob 213 when the forward / reverse rotation of the operation handle 25 is received via the rotation transmitting body 221 and the rotation shaft 222. The flush valve 211 supplies cleaning water (tap water) to the secondary side, that is, the jet pump 13 side, by pushing the valve opening knob. In this case, the rotation directions of the operation handle 25 and the rotation transmitting body 221 are different between the washing for stool and the washing for small use. The rotation shaft 222 incorporates a link mechanism 224 for driving an opening / closing lid 223, which will be described later, only in the case of rotating the handle for small use.
[0030]
The flush valve 211 that is opened as described above has the same internal valve configuration as the existing one, and has a configuration that self-closes due to the pressure balance between the primary side and the secondary side. Regardless of the flush after stool (large flush) or the flush after small use (small flush), the flash valve 211 is kept open for a predetermined time and then closed (self-closed). Then, a predetermined amount of washing water (tap water) is supplied to the jet pump 13.
[0031]
Further, the toilet flushing tank device 207 has a replenishment pipe branched from immediately below the water stop valve 9, that is, a supply pipe branched from the water stop valve housing, and this pipe line is connected to the ball tap 115. The ball tap 115 replenishes the washing water in the internal area 205 of the washing water tank 200 by floating and floating the floating ball 117, and maintains the water level in the tank at the washing water full water level WS when not washing. In addition, when the water level in the tank reaches the washing water full water level WS, the ball tap 115 is configured to stop supplying the washing water.
[0032]
In addition, the toilet flush tank device 207 has a pump compartment container 225 surrounding the jet pump 13 in the internal region 205. The pump compartment container 225 has a bottom with an open upper end, and is fixed to the tank bottom. The pump compartment container 225 has a water passage opening 226 on a side surface on the rotation transmission body 221 side, an opening / closing lid 223 pivotally supported below the opening, and a weight 227 fixed to the lid. The water passage opening 226 is opened and closed by the opening / closing lid 223.
[0033]
The pump compartment container 225 is submerged in the washing water stored in the internal area 205, and the upper end thereof is lower than the full water level WS of the washing water. Further, the water passage opening 226 is formed such that the lowest water level WL of the washing water at the end of the washing is located in the opening. Therefore, the opening / closing lid 223 allows the tank-stored washing water to flow into the pump compartment container 225 while the water-flow opening 226 is in the illustrated open position. Thereby, in the jet pump 13, the stored washing water between the illustrated full water level WS and the minimum water level WL can flow into the throat 132. On the other hand, while the opening / closing lid 223 is in the opening closed position, the washing water cannot pass through the water opening 226. As a result, in the jet pump 13, the washing water in the internal region 205 of the tank between the full water level WS and the upper end of the pump compartment container 225, and the washing in the pump compartment container 225 between the upper end of the pump compartment container 225 and the lowest water level WL. Water can flow in, and the amount becomes smaller than when the water flow opening is opened.
[0034]
The opening / closing lid 223 is connected to the opening / closing operation rod 229 of the link mechanism 224 by a chain 228. The link mechanism section 224 lifts the opening / closing lid 223 by swinging the opening / closing operation rod 229 around the rotation shaft 222 only when the rotation transmitting body 221 is operated in the rotation direction of the small cleaning. Thereby, the water passage opening 226 is closed by the opening / closing lid 223. Further, the link mechanism 224 has a built-in delay drive mechanism including an oil damper, a gear, and the like. The drive mechanism allows the opening / closing operation rod 229 to operate for a predetermined time, specifically, a time from the start of the small washing to the end of the small washing. The posture is maintained, and then the opening / closing operation rod 229 is returned to the original position shown in the figure. Therefore, when the rotation transmission body 221 is driven by receiving the small washing operation, the amount of washing water that can flow into the throat 132 is limited to a small amount by closing the water passage opening 226 described above. When the opening / closing operation rod 229 is returned to the original position, the weight of the weight 227 acts on the opening / closing lid 223, so that the opening / closing lid 223 immediately moves away from the closed position of the water passage opening 226 to release the opening.
[0035]
Next, a washing water supply system from the washing water tank 200 to the toilet will be described. FIG. 5 is an explanatory diagram showing the configuration of the jet pump 13 as viewed in cross section.
[0036]
The flush water supply system to the toilet includes a pipe 12 downstream of the flush valve 211, a jet pump 13 that receives a supply of working water from the pipe, and a downstream pipe 214 that guides flush water from the jet pump to the toilet. The jet pump 13 has an injection nozzle 131 and a throat 132 arranged directly opposite the nozzle. The injection nozzle 131 includes an outer cylinder 131a having an appearance at the tip of the nozzle portion, and a hollow inner cylinder 131b disposed coaxially with the outer cylinder 131a. The outer cylinder 131a has a small-diameter tapered shape on the nozzle tip side, and integrally includes a flange 131g on the large-diameter side. The inner cylinder 131b is positioned and supported with respect to the outer cylinder 131a by a cup-shaped bottom wall 131e extending downward from the flange 131g. By adopting such a structure, the injection nozzle 131 turns a region surrounded by the outer cylinder 131a, the inner cylinder 131b, and the bottom wall 131e into a cylindrical flow path 131c surrounding the inner cylinder 131b.
[0037]
In addition, the injection nozzle 131 forms a continuous annular injection port 131d between the small-diameter end of the outer cylinder 131a and one end of the inner cylinder 131b, and uses this injection port as the upstream flow port. The opening has a width narrower than that of the road 131c. Further, the hollow portion of the inner cylinder 131b is formed as a through flow path 131h penetrating the injection nozzle 131, and the through flow path is provided so as to be surrounded by the above-described annular outlet 131d. The jet nozzle 131 is fixed to the pipe 12 by connecting the end of the pipe 12 described above to the opening 131f of the cup-shaped bottom wall 131e, and adopts a posture in which the jet port 131d is directed obliquely upward.
[0038]
The throat 132 facing the injection nozzle 131 is arranged in close proximity so that the nozzle outlet enters the cleaning water inflow side opening. The injection nozzle 131 and the throat 132 are fixed by screwing to fixed legs 131k erected at an equal pitch on the upper surface of the flange 131g, thereby forming an assembly. The throat 132 takes an attitude along the flow (jet) of the washing water jetted from the jet nozzle 131, and the center of the jet (the center of the jet port 131d) and the center of the throat pipe are substantially aligned.
[0039]
The jet pump 13 having the above configuration causes the washing water in the tank to flow into the throat 132 from the gap S between the jet port 131d of the jet nozzle 131 and the lower end flange 132e of the throat 132. Further, the tank cleaning water around the pump is caused to flow into the throat 132 via the through flow path 131h.
[0040]
In this case, in the jet pump 13, the inner cylinder 131b around the through channel 131h protrudes from the upper end of the outer cylinder 131a. For this reason, the jet washing water jetted from the jet port 131d flows into the throat 132 after being guided by the projecting portion of the through flow path 131h after the jet port 131d. Therefore, according to the jet pump 13, the jet cleaning water can be flown into the throat 132 without disturbing the flow, so that the suction efficiency of the cleaning water in the tank as shown by the outline arrow A in the drawing is improved. Therefore, the performance of increasing the flow rate of the cleaning water discharged from the jet pump 13 can be improved.
[0041]
The downstream pipe 214 into which the washing water flows from the jet pump 13 via the throat 132 takes the following route. That is, as shown in FIG. 1, the downstream pipe 214 is connected to the throat 132 at an inlet 214 a submerged in the tank cleaning water, and has a rising pipe 214 b that rises obliquely along the jetting direction of the jet pump 13. The downstream pipe 214 is curved at the rising end of the rising pipe 214b that has risen above the full water level WS of the washing water, and has a descending pipe 214d that extends downward from the curved portion 214c. 214e.
[0042]
The water outlet 214e is located lower than the water inlet 214a, and has substantially the same height as the rim water passage 16b of the toilet 10. The upstream side of the water outlet 214e is formed as a downward curved conduit 214f that is convex downward as shown in the figure, and the lower curved conduit 214f reaches the water outlet from a lower position than the water outlet 214e. The pipe top 214g is positioned below the tank bottom. Therefore, the washing water is stored in the downward curved pipe 214f at the time of non-washing.
[0043]
The downstream pipe 214 has a flange 215 on the water outlet 214e side, and has a fixing protruding claw 216 at an end. The downstream pipe 214 connects the water outlet 214e to the rim water passage 16b substantially horizontally through the protruding claw 216. When connecting to the rim water passage 16b, the protruding claw 216 is fitted into the fixing hole 16d at the rear end of the rim, and the jaw at the tip of the claw is hooked on the peripheral wall of the fixing hole. Note that the downstream pipe 214 penetrates the washing water tank 200 when taking the above-described route, and the penetrating portion is made watertight by a rubber bush 214h.
[0044]
Here, an operation state of the toilet 10 according to the present embodiment will be described.
As shown in FIG. 2, before flushing the toilet (before toilet), predetermined flush water is stored in the ball portion 11 and the flush water tank 200 in preparation for the next flush / wash. That is, in the ball portion 11, the stored water W1 is stored at the water level determined by the curved weir portion on the top of the pipeline of the siphon trap 15. In the washing water tank 200, the washing water W2 is stored at the water level (full water level WS) maintained by the floating ball 117 and the ball tap 115 described above.
[0045]
When the operation handle 25 of the front panel 50 is rotated in the direction for large cleaning, the flush valve 211 of the toilet cleaning tank device 207 is opened without closing the water passage opening 226. As a result, tap water flow from a not-shown water pipe to the toilet flush tank device 207 is started, and this tap water is supplied to the jet nozzle 131 of the jet pump 13 through the flush valve 211 and the pipe 12. That is, tap water from the water supply pipe is supplied as operating water for the jet pump 13. In this embodiment, the tap water supply pressure to the flush valve 211 and thereafter is limited with the pressure reducing valve 21 interposed, and the supply water pressure is reduced to about 0.04 to 0.07 MPa (about 0.4 to 0.7 kgf / cm). ² ) Degree. In other words, the toilet is washed at such a low water supply pressure.
[0046]
The tap water supplied to the injection nozzle 131 passes through the cylindrical flow path 131c of the injection nozzle 131 as shown by an arrow X in FIG. Since the passage width of the jet port 131d is smaller than that of the cylindrical channel 131c downstream thereof, the cylindrical jet becomes a high-speed jet whose flow velocity is increased.
[0047]
When the washing water is ejected from the ejection port 131d in this manner, since the ejection state is a cylindrical high-speed jet, the washing water is drawn inside the cylindrical jet as shown by an arrow Y in FIG. Happens. Further, inside the jet flow, there is a through-flow passage 131h of the washing water penetrating the injection nozzle 131, so that the washing water W2 around the jet pump is drawn into the inside of the flow passage from the lower end opening of the through flow passage 131h and entrained. Is done. Thus, the jet cleaning water of the cylindrical high-speed jet from the jet port 131d and the cleaning water W2 entrained by the jet cleaning water are jetted from the jet nozzle 131 toward the throat 132. The jet cleaning water and the entrained cleaning water flow into the throat 132 without deceleration due to the facing arrangement of the injection nozzle 131 and the throat 132.
[0048]
Further, the inflow of the cleaning water from outside of the cylindrical jet X occurs due to the flow of the cleaning water of the cylindrical jet from the jet port 131d into the throat 132. This drawing-in occurs in all directions of the inlet since the illustrated gap S is opened in all directions around the inlet 132a. At this time, the above-mentioned entrained wash water flows into the throat 132 in addition to the jet wash water. Therefore, the inflow of the washing water into the throat 132 is in a state where the amount of the washing water is increased, and the deceleration does not occur as described above, so that the suction of the washing water outside the cylindrical jet is increased. The amount of entrained washing water also increases. Then, the cleaning water (tap water) of the cylindrical high-speed jet and the cleaning water W2 entrained as described above inside and outside thereof are integrated, and as shown by the white arrow A in FIG. It is sucked. The mixed fluid of the high-speed jet cleaning water (tap water) and the cleaning water W2 is discharged from the throat 132 through the pipeline 132c, and further discharged from the jet pump 13.
[0049]
The mixed fluid of the tap water and the washing water W2 discharged from the jet pump 13 flows into the rising pipe 214b of the downstream pipe 214 that is inclined upward, and pushes the air in the pipe toward the rim water passage 16b. In this case, since the downstream pipe 214 is filled with water, a siphon effect is induced in the downstream pipe 214. Therefore, the washing water W2 in the tank is forcibly sucked into the downstream pipe 214 and supplied to the rim water passage 16b of the toilet 10 by the induced siphon action. Therefore, in addition to the jetting of the washing water by the jet pump 13, the amount of the washing water reaching the toilet 10 can be increased only by the forced suction. As a result, according to the toilet bowl 10 of the present embodiment, it is possible to perform toilet flushing (large flushing) with high water flushing water, and it is possible to improve the cleaning ability. Further, since a high water force can be obtained, it is possible to save water of the washing water. Furthermore, since it is sufficient to supply the working water to the jet pump 13 for a short time enough to induce the siphon action, it is possible to suppress the energy for supplying the working water, and further save the washing water. .
[0050]
The washing water (mixed fluid) that has flowed into the rim water passage 16b is discharged to the ball portion 11 and flushes the stored water W1 to the siphon trap 15 side to fill the siphon trap 15 with water. When the siphon trap 15 becomes full, a siphon action occurs. Therefore, the mixed fluid of the tap water and the washing water W2 discharged to the ball portion 11, the accumulated water W1, and the dirt in the accumulated water W1 are separated by the siphon trap. The air is discharged from the toilet 10 to the outside of the toilet at a stretch through 15.
[0051]
In this embodiment, even at the extremely low water supply pressure as described above, the toilet flushing ability equal to or higher than that of the existing siphon trap type toilet can be exhibited. Therefore, the toilet 10 of the present embodiment can be installed even in a low supply water pressure area, and the applicable range can be expanded.
[0052]
When the downstream pipe 214 was installed, the water inlet 214a and the water outlet 214e were provided with the above-described height difference. Therefore, the siphon effect in the downstream pipe 214 can be reliably induced, and the flush water can be supplied to the toilet 10 at a high water level, which is preferable.
[0053]
Moreover, a downward curved pipe 214f is provided in front of the water outlet 214e of the downstream pipe 214 so that the washing water is stored in the pipe. Therefore, when the siphon action is induced by the jetting of the washing water from the jet pump 13, the air sealed in the pipe upstream of the downward curved pipe 214f may be pushed out. In the situation where the air is sealed in this way, since there is a water column in the front and rear conduits of the sealed air portion, the extrusion of the air is performed when the air is not sealed and there is no water column before and after. It is easier than that. Therefore, according to the tenth embodiment, the siphon action can be easily induced in the downstream pipe 214, which is preferable.
[0054]
In addition, since the jet pump 13 having the injection nozzle 131 and the throat 132 is used to induce the siphon action in the downstream pipe 214, it is possible to realize the pushing of the air from the downstream pipe 214 and the reliable induction of the siphon action accompanying the jet. Therefore, by the supply of the cleaning water at the high water force as described above, it is possible to surely achieve the effects of improving the cleaning performance and saving the cleaning water. Moreover, even if the supply of the operating water to the injection nozzle 131 is stopped almost simultaneously with the completion of the induction of the siphon action in the downstream pipe 214, the washing water in the tank can be supplied to the toilet 10 by the siphon action thereafter. Therefore, the supply amount of working water can be reduced, and water saving can be promoted accordingly.
[0055]
Also, at the beginning of the induction of the siphon action, the flush water from the spray nozzle 131 and the flush water in the tank can be flowed into the downstream pipe 214 together. Therefore, it is possible to surely increase the supply amount of cleaning water to the toilet 10 at the start of cleaning, to increase the water force at the beginning of cleaning, and to improve the cleaning capacity.
[0056]
When the supply of the cleaning water in the tank proceeds and the level of the cleaning water W2 in the cleaning water tank 200 reaches the gap S between the throat 132 and the injection nozzle 131, the siphon action in the downstream pipe 214 due to the suction of air into the throat 132. Disappears. In this case, the supply of the washing water from the further tank is stopped, and the washing water remaining in the downstream pipe 214 flows into the toilet 10. This washing water becomes the pool water W1 in the ball portion 11 after the toilet bowl is washed.
[0057]
The flush valve 211 automatically closes when a predetermined amount of tap water flows. The supply of tap water to the jet pump 13 stops, and the operation of the jet pump 13 stops. The stop timing of the flash valve 211, that is, the timing of stopping the supply of tap water, is adjusted in anticipation of the time when the siphon action is induced in the downstream pipe 214 as described above. In this timing adjustment, the flush valve 211 is designed and manufactured so as to stop at a timing based on the amount of stored water, the degree of flow increase by the jet pump 13, the total amount of flush water used for flushing the toilet, and the like.
[0058]
The small cleaning in the toilet 10 is as follows. When the operation handle 25 of the front panel 50 is rotated in the direction opposite to the direction for small cleaning, the flush valve 211 is opened and the supply of cleaning water to the jet pump 13 starts as in the case of the large cleaning described above. Is done. At the same time, the water flow opening 226 is closed, and the amount of flush water flowing into the throat 132 is limited. That is, as described above, by closing the water passage opening 226, the flush water amount in this case is equal to the flush water in the internal region 205 between the full water level WS and the upper end of the pump compartment container 225, and the pump compartment container 225. It is limited to the sum of the flush water in the pump compartment container 225 between the upper end and the minimum water level WL. Therefore, although the mixed fluid is discharged from the jet pump 13 and the siphon action is induced in the downstream pipe 214 by opening the flash valve 211, the discharge cleaning water amount is limited to a small amount by the throat inflow amount restriction. Even at the time of this small washing, the jet pump discharge washing water is discharged from the water discharge hole 16a to the ball portion 11 through the downstream pipe 214 and the rim water passage 16b.
[0059]
For this reason, according to the toilet bowl 10 of the present embodiment, the toilet bowl is washed with a small amount of flush water after small use, and the toilet bowl is flushed with a larger amount of flush water after stool, depending on the operation condition of the operation handle 25. Washing can be performed. Therefore, in the toilet 10 of the present embodiment, the toilet can be washed with the amount of water according to the size of the toilet.
[0060]
In the above embodiment, it is also possible not to set the total amount of washing water at the time of large and small washing. In this case, members related to the flow rate setting, such as the link mechanism 224, the pump compartment container 225, and the associated opening / closing lid 223, may be omitted, and the jet pump 13 may be directly submerged in the washing water in the tank.
[0061]
Next, a modified example will be described. FIG. 6 is an explanatory view showing a toilet in cross section for explaining a modification, and FIG. 7 is an explanatory view showing a toilet in cross section for explaining another modification.
[0062]
In the toilet 10 of the modified example shown in FIG. 6, the descending conduit 214d of the downstream pipe 214 is simply a path descending to the water outlet 214e. Even in this modification, an effect associated with the induction of the siphon action in the downstream pipe 214 can be achieved.
[0063]
In the toilet 10 of the modified example shown in FIG. 7, the descending conduit 214 d of the downstream pipe 214 is simply made to descend to the water outlet 214 e, and the water outlet 214 e is connected to the rim water passage 16 b from above. Even in this modification, an effect associated with the induction of the siphon action in the downstream pipe 214 can be achieved.
[0064]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described examples and embodiments, and it is needless to say that the present invention can be carried out in various modes without departing from the gist of the present invention. is there.
[0065]
For example, the toilet 10 has the rim water passage 16b and the flush water is supplied from the water discharge hole 16a to the ball portion 11, but the present invention is not limited to this. That is, the cleaning water supplied from the tank can be directly applied to the stored water W1 of the ball portion 11 and the stored water can be applied to the flush toilet which pushes the ball portion stored water into the siphon trap 15.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a toilet room in which a toilet bowl 10 of an embodiment is installed.
FIG. 2 is an explanatory diagram for explaining a state of storing wash water, a state of disposing a jet pump 13, and the like when viewing the toilet bowl 10 and a wash water tank 200 thereof in a vertical cross section.
FIG. 3 is an explanatory diagram for explaining an internal device arrangement when a main part of the tank is viewed in a horizontal cross section.
FIG. 4 is an explanatory diagram for explaining an internal device arrangement when a main part of the tank is viewed in a vertical cross section.
FIG. 5 is an explanatory diagram showing a configuration of the jet pump 13 as viewed in cross section.
FIG. 6 is an explanatory view showing a toilet in cross section for explaining a modified example.
FIG. 7 is an explanatory view in cross section of a toilet for explaining another modified example.
[Explanation of symbols]
9 ... Water stop valve
10. Toilet bowl
11… Ball part
11a ... toilet seat
12 ... Piping
13. Jet pump
14 ... Toilet lid
15 ... Siphon trap
16 ... Rim
16a: spout hole
16b… Rim waterway
16d ... fixed hole
20… Primary side piping
21 ... Reducing valve
25 ... Operation handle
40 ... storage box for toilet
50 front panel
60L ... left cabinet
60R ... right cabinet
80 ... Hand wash counter
81 ... Hand wash Karan
82 ... Hand wash sink
115… Ball tap
117 ... Floating ball
131 ... injection nozzle
131a ... outer cylinder
131b ... inner cylinder
131c ... flow path
131d: spout
131e ... Bottom wall
131f ... opening
131g ... Flange
131h: through flow channel
131k ... fixed leg
132 ... Throat
132c ... Pipe section
132e ... lower end flange
200 ... Washing water tank
205: Internal area
207 ... Toilet washing tank device
211 ... Flash valve
212… Vacuum breaker
213: Valve opening knob
214 ... downstream piping
214a ... Inlet
214b ... ascending pipeline
214c ... bending part
214d ... descending pipeline
214e ... water outlet
214f ... downward curved pipeline
214g… top of pipeline
214h ... Rubber bush
215 ... Flange
216 ... Projecting claw
220 ... Conversion mechanism
221 ... Rotation transmission body
222 ... rotating shaft
223 ... Open / close lid
224 ... Link mechanism
225… Pump compartment container
226 ... Water opening
227 ... weight
228 ... chain
229… Open / close operation rod
W1 ... water
W2 ... Washing water
WL ... Lowest water level
WS: Full water level

Claims (7)

A toilet having a tank for storing washing water, wherein the toilet is cleaned with washing water guided from the tank via a supply path,
A toilet that induces a siphon action in the supply path and guides the wash water to the toilet when the wash water in the tank is sent to the toilet. The toilet of claim 1,
The water supply path is
An inlet submerged in the washing water of the tank,
A water outlet which is located lower than the water inlet and communicates with a flush water path of the toilet;
A supply pipe that rises from the water inlet to exceed the full water level of the tank and then falls to reach the water outlet,
The tank is
A toilet having a flush water supply mechanism for feeding flush water in the tank toward the water inlet to induce a siphon action in the supply pipe. The toilet according to claim 2,
The supply line includes:
A toilet having a pipe configuration that is bent upstream of the water outlet to reach the water outlet from a location lower than the water outlet so that washing water is stored when not being washed. The toilet according to claim 2 or claim 3,
The washing water supply mechanism,
A jet pump having an injection nozzle and submerged in washing water in the tank,
An injection nozzle water supply unit that supplies operating water to the injection nozzle and jets out operating water from the injection nozzle,
A toilet, wherein the flush water in the flush water tank flows into the water inlet with flushing of the flush water from the spray nozzle. The toilet of claim 4,
The jet pump,
A toilet having a throat disposed opposite to the injection nozzle and connected to the water inlet. The toilet according to claim 4 or claim 5,
The toilet bowl, wherein the water supply unit for a spray nozzle includes a backflow avoiding valve that prevents backflow of the wash water from the side of the spray nozzle. The toilet according to any one of claims 1 to 6,
A rim formed so as to surround the bowl portion of the toilet bowl with an upper edge, from the rim, a rim water discharge mechanism capable of discharging washing water along the ball portion surface,
A toilet having the supply path connected to the rim water discharge mechanism.

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