JP2006028757A - Direct connection without pressure regulation to house supply type closet bowl - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a direct connection without pressure regulation to house supply type closet bowl which can prevent the emission of an offensive odor into a toilet from drain piping by blocking the movement of air in the drain piping side of a trap and a space on the side of a bowl part to the utmost when flushing water is ejected from a trap spout. <P>SOLUTION: This direct connection without pressure regulation to house supply type closet bowl is equipped with a bowl spout for ejecting flushing water for flushing a bowl part, a trap spout for making the flushing water for bringing about a siphon action ejected to the trap communicating with a bottom of the bowl part, and a flushing water supply device for supplying the flushing water from water service to the bowl spout and the trap spout. The direct connection without pressure regulation to house supply type closet bowl supplies the flushing water by switching the bowl spout, the trap spout and the bowl spout in this order by means of the flushing water supply device. The direct connection without pressure regulation to house supply type closet bowl is characterized in that a negative pressure delay structure part is provided in the channel of the trap at least while blow flushing is performed by using the flushing water from the trap spout. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention includes a bowl water supply port for discharging cleaning water for cleaning the bowl portion of the toilet bowl, and a trap water supply port for discharging cleaning water for inducing siphon action to a trap communicated with the bottom of the bowl portion. It is related with the water pressure direct-pressure type toilet.

  The direct water pressure toilet that supplies tap water directly to the pipe and uses it for cleaning water is more compact and design than the tank toilet that stores and uses the cleaning water in a tank placed behind the toilet. In recent years, it has been widely applied to condominiums and the like. The toilet includes a rim water passage at the top of the bowl portion for spreading washing water for washing the bowl portion throughout the bowl portion, a bowl spout for discharging the washing water substantially horizontally to the rim water passage, Washing water is supplied to each of the bowl water outlet and the trap water outlet using the pressure of the water supply source (water supply) and the trap water outlet for discharging the cleaning water for inducing siphon action to the trap communicated with the bottom of the bowl portion. There is a thing provided with a washing water supply device which supplies water. (For example, see Patent Document 1)

  Details of a conventional water direct pressure toilet are described with reference to FIGS. 11 to 17. In this toilet, when a cleaning instruction is input from the user to the cleaning water supply device 1, first, the bowl water supply for cleaning the bowl portion 4 by supplying the cleaning water to the bowl spout 2 for a predetermined time. (FIG. 11), and subsequently supplying the cleaning water to the trap water outlet 3 for a predetermined time to fill the trap 6 and generate a siphon action to discharge dirt and accumulated water in the bowl portion 4. The trap water is supplied (FIGS. 12 to 14), and finally, the cleaning water is supplied again to the bowl outlet 2 for a predetermined time, so that the cleaning water is stored in the trap 6 and the bowl portion 4 to condense the stored water. Bowl water supply (FIG. 15) is performed to complete a series of cleaning operations. Here, the trap water supply activates the siphon, and the cleaning state shown in FIG. 12 in which most of the filth is discharged out of the toilet bowl together with the stored water, and the water storage surface 5 is lowered to the position of the trap inlet 8, and the air is trapped. FIG. 13 shows the state of cleaning shown in FIG. 13 when the siphon is cut or the seal water is introduced, and the blow shown in FIG. 14 discharges light filth such as floating filth that could not be discharged by the siphon action remaining in the stored water. There is a cleaning condition.

  FIG. 16 is a switching state transition diagram of the conventional bowl water supply and trap water supply. In the state transition diagram of FIG. 16, the bowl water supply and the trap water supply are controlled using a switching valve as a cleaning water supply device. There is a timing when the bowl water supply and the trap water supply overlap at the time of switching. Moreover, FIG. 17 is a switching state transition diagram of another prior art bowl water supply and trap water supply, which is controlled by using a direct valve having a water stop structure for each of the bowl water supply and the trap water supply. Sometimes the bowl water supply and the trap water supply do not overlap.

JP 2001-73434 A

   In recent years, many condominiums and detached houses have excellent sound insulation and airtightness, and the revised Building Standard Act aimed at combating sick house syndrome has made it mandatory to install a 24-hour ventilation system. Depending on the situation, a slightly negative pressure may occur in a relatively narrow closed space such as a toilet. In this state, there is a possibility that the odor in the pipe may be drawn into the toilet due to the pressure difference between the pressure in the pipe and the toilet space during the blow cleaning.

  Accordingly, the present invention provides a water tap provided with a bowl spout for discharging cleaning water for bowl portion cleaning, and a trap spout for discharging cleaning water for inducing a siphon action to a trap communicated with the bottom of the bowl portion. In a direct-pressure toilet, when rinsing water is discharged from the trap spout, air movement in the trap drain piping side and the space on the bowl side is blocked as much as possible, and odor from the drain piping is released into the tray. An object is to provide a direct water pressure toilet that can prevent water from flowing.

  In order to solve the above-mentioned problems, the present invention provides a bowl spout for discharging cleaning water for bowl cleaning, and a trap for discharging cleaning water for inducing siphon action to a trap communicated with the bottom of the bowl section. A water outlet, and a cleaning water supply device that supplies cleaning water from the tap water to the bowl water outlet and the trap water outlet, and the cleaning water supply device switches the bowl water outlet, the trap water outlet, and the bowl water outlet in this order. A water pressure direct pressure toilet that supplies wash water, and is provided with a negative pressure delay portion in the flow path of the trap at least during blow washing by the wash water from the trap spout. A direct water pressure toilet.

According to the present invention, since the negative pressure delay portion formed in the flow path of the trap is formed during the blow cleaning, which is affected by the negative pressure of the toilet space and odor is likely to move, The energy to reduce the atmospheric pressure in the drainage pipe can be relaxed and the movement of odor accompanying negative pressure formation can be almost blocked, so the discharge of filth etc. is almost finished, and the washing water containing filth etc. accompanying siphon action Even if part of the trap channel is blocked by the negative pressure delay section, the negative pressure delay section does not change the air pressure on the drain pipe side from the negative pressure delay section and prevents the strange smell in the drain pipe from being drawn into the toilet space it can.
For example, when a 24-hour ventilation system is applied, the atmospheric pressure difference is about 10 mmH ₂ O or less, so a negative pressure delay unit is required to receive almost all of the energy.

  Further, the negative pressure delay unit is a water curtain that is formed when the cleaning water discharged from the trap water outlet is poured into the stored water in the water storage unit provided in the middle of the trap. To do.

  In the blow cleaning state with the cleaning water from the trap water outlet after the occurrence of siphon action or the occurrence of the water seal breakage of the bowl portion, the cleaning water discharged from the trap water outlet and a part of the accumulated water discharged along therewith When the stored water scatters, it is combined with the cleaning water from the trap spout, and the cleaning water flows into the flow path in the trap. In some cases, an area where a layer of washing water that closes a part of the flow path exists can be formed. In addition, the effect which can prevent drawing in the odor in a drain pipe in a toilet space is the same as that of above-described invention.

  Further, the negative pressure delay part is formed by an elastic body provided in the middle of the trap and capable of opening and closing the trap flow path.

  The elastic body that can be opened and closed means that the discharge of filth and the like does not hinder the discharge, and is normally closed so as to substantially close the trap flow path, and from the trap spout. Excellent resistance to chemicals and durability of about 0.3 to 5 mm covering the cross section of the pipe so that the sealing performance is enhanced by the discharged water, for example, radial from the center of a rubber sheet such as fluorine rubber or EPDM. What formed the cut can be used suitably.

  Further, the negative pressure delay portion of the present invention is formed until just before the sealing water is recovered.

  As described above, the negative pressure delay unit is energy that reduces the pressure of the drain pipe so as to reduce the pressure difference between the bowl part side (toilet space: negative pressure) and the drain pipe side in the blow cleaning state. The purpose is to prevent the atmospheric pressure on the drain pipe from changing, and to prevent the odor in the drain pipe from moving. When the state is reached, the above-described purpose is achieved in that portion, so that the role of the negative pressure delay unit is terminated. That is, in the blow cleaning state, the period during which the negative pressure delay portion is formed is a period from the return of the stored water surface to the sealing position due to the difference between the discharge of the stored water, the supply of the bowl water and the trap water. A period is enough.

  The washing water supply device controls the flow rate to each water outlet simultaneously with switching to the bowl water outlet and the trap water outlet.

  According to the present invention, it comprises a bowl spout for discharging cleaning water for bowl part cleaning, and a trap spout for discharging cleaning water for inducing siphon action to a trap communicated with the bottom of the bowl part. In addition, it is possible to prevent the discharge of a strange odor from the drain pipe of a direct water pressure toilet.

Hereinafter, the present invention will be specifically described with reference to FIGS. The same parts as those in the prior art will be described with the same reference numerals.
(First embodiment)
In FIG. 1, reference numeral 1 denotes a cleaning water supply device connected to a water pipe that is a supply source of cleaning water (not shown). The washing water supply device 1 is concealed in a space in the upper rear part of the toilet 10, and is connected to the bowl water outlet 2 and the trap water outlet 3 through the water supply pipe. In addition, a bowl-shaped bowl portion 4 is formed inside the toilet 10, and a bent trap 6 is provided at the bottom of the bowl portion 4. In the initial state that is not in use, the cleaning water is accumulated in the recessed portion that is formed up to a portion where the flow path of the trap 6 rises from the bottom of the bowl portion and descends while being bent. The uppermost surface is referred to as a pool surface 5. Further, a drain socket 7 is provided at the end of the trap 6 and is connected to a drain pipe (not shown) that constitutes a part of the trap. Drainage sockets have been widely used in recent years without taking the trap configuration of pottery because of the commonality of different toilets and ease of construction. In addition, a part of the drain socket 7 (trap) is formed with a reservoir 9 for storing cleaning water.

Next, the operation of the first embodiment will be described with reference to FIGS.
When a cleaning instruction is input from the user to the cleaning water supply device 1, the toilet 10 first supplies bowl water for cleaning the bowl portion 4 by supplying cleaning water to the bowl spout 2 for a predetermined time. (FIG. 1), and subsequently supplying the cleaning water to the trap water outlet 3 for a predetermined time to fill the trap 6 and generate a siphon action to discharge the filth and accumulated water in the bowl 4 Trap water is supplied (FIG. 2). Next, the amount of water discharged from the trap water outlet 3 is adjusted, and the floating filth is discharged by blowing. At that time, the discharged water and the stored water in the water reservoir 9 provided in the drain socket 7 are used. Thus, a water film W is formed in the trap (FIG. 3). The water film W is formed during the blow cleaning state by controlling the flow rate or the like immediately after the siphon action is generated or immediately after the water storage surface 5 is lowered below the trap inlet 8 (after the seal water is cut off). It is like that. When the blow cleaning state is finished, the cleaning water is finally supplied again to the bowl spout 2 for a predetermined time, so that the cleaning water is stored in the trap 6 and the bowl portion 4 until the water reaches the initial water storage surface. A bowl water supply (FIG. 5) for condensing is performed to complete a series of cleaning operations.

  Next, bowl water supply and trap water supply from the washing water supply apparatus in the above-described operation description will be described with reference to FIG. FIG. 6 shows a bowl water supply and a trap water supply showing a state in which the wash water supply device 1 switches the bowl water supply, the trap water supply, and the bowl water supply in this order to supply the tap water directly to the bowl water outlet 2 and the trap water outlet 3. It is a switching state transition diagram.

  In FIG. 6, after the trap water supply is started, that is, the state of the cleaning state in FIG. 4, that is, after the reservoir surface 5 is positioned at the trap inlet 8 and the sealed water is cut off, the instantaneous flow rate of the trap water is The instantaneous flow rate of 1 is reduced to the second instantaneous flow rate, and cleaning water having an instantaneous flow rate that is the difference between the first instantaneous flow rate and the second instantaneous flow rate is simultaneously discharged from the bowl spout 2.

  Alternatively, although not shown, the state of the cleaning state is changed to the state shown in FIG. 2, that is, the trap feed water is filled with water and the siphon is generated. Compared to the flow rate, the flow rate is reduced to the second instantaneous flow rate, and the cleaning water having the instantaneous flow rate that is the difference between the first instantaneous flow rate and the second instantaneous flow rate is simultaneously discharged from the bowl spout 2.

  In FIG. 6, it is possible to effectively form a water film due to a synergistic effect with the stored water in the water storage portion of the drain socket while reducing the instantaneous flow rate of the trap water supply during blow cleaning. During cleaning, the bowl water supply is performed while trapping water is supplied, so that the bowl water supply can be covered with the trap water supply port 3 and the time for recovering the sealed water can be shortened. In the present embodiment, the switching water supply for bowl water supply and trap water supply has been described in the case of the cleaning water supply device using the switching valve. However, the direct water having a structure capable of stopping each of the bowl cleaning water and the trap cleaning water shown in FIG. It can also be applied to valve control.

Next, a specific operation description will be described with reference to FIG.
In FIG. 6, when a cleaning command is input to the cleaning water supply device 1, bowl water supply is performed at an instantaneous flow rate of 20 L / min for T1 seconds, and then the switching valve is switched to perform trap water supply. The trap water supply is performed at a momentary flow rate of 20 L / min for a period of T2 seconds from the start of water supply until the occurrence of siphoning or the occurrence of a dead seal, and after T2 seconds, the instantaneous flow rate is less than 20 L / min and the water supply is for T3 seconds. It is carried out. The bowl water supply is performed simultaneously with the trap water supply at the instantaneous flow rate Q2 during the T3 seconds. The instantaneous flow rate Q2 is the instantaneous flow rate (20-Q1) of the difference between the instantaneous flow rate 20L / min of trap water supply and Q1, and the instantaneous flow rate of cleaning water supplied from the cleaning water supply device 1 is 20L / min. Then, after T3 seconds of trap water supply, trap water supply is stopped and bowl water supply is performed at an instantaneous flow rate of 20 L / min.
Perform a series of cleaning operations for 4 seconds.

When the trap water supply and bowl water supply are performed simultaneously, the instantaneous flow rate of the trap water supply is 11 L / min or more because the trap water in the bowl with light filth cannot be discharged to the trap drain side if it is too small. Is necessary.
That is, a preferable range of the instantaneous flow rate of the trap water when the trap water supply and the bowl water supply are simultaneously performed is 11 L / min to 14.5 L / min.

  In addition, the time from when the siphon action occurs until the siphon action ends is about 1.5 seconds for the siphon type or siphon set type flush toilet stipulated by JIS, so T2 must be 1.5 seconds or more. is there.

  On the other hand, if this time T2 is too long, the siphon action ends and the trap water in the bowl is discharged to the trap drainage side by the momentum of the trap water supply, but only the trap water supply during the time T2 Therefore, it is preferable to shorten this time as much as possible.

  In the above-described embodiment, the timing of changing the instantaneous flow rate of the cleaning water in the trap water supply or the simultaneous water supply of the bowl water supply is performed by the timer built in the cleaning water supply device 1, but the siphon generation or the seal water breakage is provided separately. The detection unit may detect the change and the instantaneous flow rate of the cleaning water in the trap water supply may be changed or the bowl water supply may be simultaneously performed according to the detected signal. For example, a pressure sensor may be provided in the trap 6 to detect the pressure in the trap during cleaning, and a detection device capable of detecting the height of stored water in the bowl 4, such as a float switch, a non-contact type displacement meter, You may detect by the pressure sensor provided in the bowl bottom part, the water level sensor, etc.

  Moreover, although the floor drainage type was demonstrated in the said embodiment, it is the same also with a wall drainage type as shown in FIG.

(Second Embodiment)
The difference from the first embodiment is the structure of the drain socket, and the other parts are the same, so the structure of the drain socket will be described.
Reference numeral 11 in FIG. 8 is a drain socket, which is composed of a flange 11b and a bent tube 11a fixed to the floor surface, and an elastic body 12 having a notch 12a is interposed between the flange 11b and the bent tube 11a. Has been. The elastic body 12 may be provided between the drain socket and the ceramic trap of the toilet bowl.

  An example of the elastic body is shown in FIG. The elastic body 12 is a circular sheet of about 1 mm made of rubber, and has a cut 12a radially extending from the center, and can be opened and closed from the cut portion by pressing the surface.

  In FIG. 8, as described in the first embodiment, when filth or the like is discharged by siphon action, it opens from the notch 12a portion of the elastic body 12, and does not obstruct the discharge of filth. Under normal conditions, the inside of the trap is always closed, but when the flow rate during blow cleaning decreases, the cleaning water from the trap feed water forms a water film at the cut-in part, resulting in a complete seal structure. Therefore, the toilet space becomes a negative pressure, and it is possible to reliably prevent the odor in the drainage pipe from moving due to the pressure difference with the drainage pipe.

  In the case of wall drainage as shown in FIG. 7, the same effect can be expected if a cut is formed in a warm shape.

  In the above embodiment, the structure using the resin drainage socket as the trap has been described.

FIG. 3 is a transition diagram of the cleaning state of the first embodiment (bowl water supply). Transition diagram of the cleaning state of the first embodiment (trap water supply, siphon activation). Transition of the cleaning state of the first embodiment (trap water supply, sealed water out, siphon out). Transition diagram of cleaning state of the first embodiment (trap water supply, blow). FIG. 3 is a transition diagram of the cleaning state of the first embodiment (bowl water supply). The switching state transition diagram of bowl water supply and trap water supply of a 1st embodiment. The figure which shows the other modification of 1st Embodiment. The figure which shows 2nd Embodiment. The figure which shows the component of 2nd Embodiment. The figure which shows the component of 2nd Embodiment. Transition diagram of the cleaning state of the prior art (bowl water supply). Transition diagram of cleaning state of the prior art (trap water supply, siphon activation). Transition diagram of the cleaning state of the prior art (trap water supply, sealed water out, siphon out). Transition diagram of the cleaning state of the prior art (trap water supply, blow). Transition diagram of the cleaning state of the prior art (bowl water supply). The switching state transition diagram at the time of using a switching valve for switching of bowl water supply and trap water supply of a prior art. The switching state transition figure at the time of using a direct valve for switching of bowl water supply and trap water supply of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Washing water supply apparatus 2 ... Bowl water supply port 3 ... Trap water supply port 4 ... Bowl part 5 ... Reservoir surface 6 ... Trap 7 ... Drain socket 8 ... Trap inlet 9 ... Reservoir part 10 ... Toilet bowl 11 ... Drain socket 11a ... Flange 11b ... bent tube 12 ... elastic body 12a ... notch

Claims (5)

A bowl spout for discharging the wash water of the bowl cleaning,
A trap spout for discharging cleaning water for inducing a siphon action to a trap communicated with the bottom of the bowl part;
A cleaning water supply device for supplying cleaning water from a tap to the bowl spout and the trap spout;
A water direct pressure type toilet that supplies cleaning water by switching the bowl water outlet, the trap water outlet, and the bowl water outlet in this order by the cleaning water supply device,
A direct water pressure toilet with a negative pressure delay provided in the flow path of the trap at least during blow cleaning by the cleaning water from the trap spout.   The negative pressure delay unit is a water curtain formed by supplying wash water discharged from a trap water discharge port to water stored in a water storage unit provided in the middle of the trap. Item 1. A direct water pressure toilet according to item 1.   The negative pressure delay portion is formed by an elastic body that is provided in the middle of the trap and can be opened and closed.   The water direct pressure toilet according to any one of claims 1 to 3, wherein the negative pressure delay portion is formed at least until immediately before recovery of the sealed water. The water direct pressure type toilet according to any one of claims 1 to 4, wherein the flush water supply device controls a flow rate to each water outlet simultaneously with switching to a bowl water outlet and a trap water outlet.

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