JP2008045277A - Flush toilet bowl - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flush toilet bowl which can effectively discharge floating human waste by using siphoning force while reducing siphon releasing noise. <P>SOLUTION: According to the operation of the flush toilet bowl, a bowl surface is flushed with a flushing water from rim spouts, and a vertical swirl flow is formed in a standing water section by the flushing water from a side jet spout, to thereby feed the human waste in the standing water section into a drainage ditch. The flush toilet bowl is composed of a siphonage preventing means in a space where siphonage of the drainage ditch can arise. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a flush toilet equipped with a side jet spouting port (second ejection port) for ejecting washing water to a reservoir portion in addition to a rim water spouting port for cleaning a bowl surface.

  There are two types of flush toilets: siphon type and non-siphon type. As shown in FIG. 6, in the siphon type, when the cleaning water is supplied from the water outlet of the rim from the state (a) where the water is stored in the water storage part, the water is stored as shown in the state (b). The water level in the section rises, and at the same time, the amount of drainage is less than the amount of water supplied by the throttling section, so the trap becomes full. When the amount of water supply decreases, the wastewater in the trap is discharged to the outside as shown in the state (c), and along with this, the floating filth is discharged and most of the accumulated water is discharged as shown in the state (d). Therefore, water is supplied from the rim spout.

  Since the siphon type flush toilet described above draws filth into the drainage channel by the siphon action, no light floating filth remains in the water reservoir. However, the siphon action is terminated by drawing the accumulated water into the trap by the siphon action at the time of drainage, and finally sucking in the air. At that time, a large abnormal noise (siphon break sound) is generated. On the other hand, in the case of a non-siphon type in which filth is pushed into the drainage channel with washing water, although there is no abnormal noise, light floating filth may remain in the water reservoir.

Patent Documents 1 to 6 disclose flush toilets equipped with a side jet spouting port (second ejection port) in addition to a rim water spouting port for effective cleaning with a small amount of washing water.
Patent Document 1 discloses that a flush hole is provided in the vicinity of the bottom of the toilet bowl, a swirling flow is generated by jetting from the flush hole, and waste in the toilet bowl is quickly discharged by the swirling flow and siphon action. ing.
Patent Document 2 discloses that a jet outlet is formed at a position lower than the water storage surface of a recess (reservoir) at the bottom of the bowl, and the washing water from the jet outlet forms a swirling flow. Yes.
In Patent Document 3, a sub-jet ejection portion is provided on the side surface of the bowl portion, and the cleaning water discharged from the sub-jet ejection portion progresses while creating a swirling flow along the wall surface of the bowl portion, resulting in an upward flow. It is disclosed.
Patent Document 4 discloses that a jet outlet is formed at a position lower than the water storage surface of the bowl portion, and a swirling flow is caused by water discharged from the jet outlet.
Patent Document 5 discloses that a downward water discharge opening is provided on the lower surface of the rim, and filth is pushed into the drainage channel with the wash water from the water discharge opening.
Patent Document 6 discloses that a water discharge port is provided above the water storage surface, and floating waste is poured into a drainage channel with washing water from the water discharge port.

JP-A-7-310353 JP 2002-97704 A JP 2004-100307 A Table 98-05829 No. 98-16696 WO 2004/022862 pamphlet

  In the conventional siphon toilet as described above, the generation of abnormal noise has been a problem that cannot be eliminated in order to improve the waste discharging ability.

  In order to solve the above-mentioned problem, the present invention cleans the bowl surface with the cleaning water from the rim spout and forms a swirling flow in the vertical direction in the water reservoir by the cleaning water from the side jet spout. In the flush toilet in which the filth is poured into the drainage channel, the flush toilet has a siphon action suppressing means for the space causing the siphon action of the drainage channel.

  As the siphon action suppressing means, it is conceivable to reduce the degree of throttling provided at the downstream side of the space causing the siphon action, or to increase the volume of the space causing the siphon action.

  By setting it as the said structure, the siphon action sound can be suppressed by suppressing the drawing-in force of the strong water of a siphon action, and ending a siphon action before inhaling air. For this reason, the lowering of the pulling force is effectively formed by the vertical swirling flow of the water storage part due to the washing water from the side jet outlet and the washing water from the rim water spouting, and the vertical swirling flow pushed into the drainage channel is formed. It becomes possible to discharge filth.

  According to the present invention, instead of generating a strong siphon action as in the prior art, the siphon action is intentionally weakened, the abnormal sound generated when the siphon is cut off is reduced, and the upper and lower sides from the side jet spout are reduced. Dirt can be effectively discharged by the swirl flow in the direction.

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a sectional view of a flush toilet according to the present invention, and FIG. 2 is a plan view of the flush toilet according to the present invention.
The flush toilet is provided with a rim portion 2 at the upper edge of the bowl portion 1 that receives filth, and the bottom portion of the bowl portion 1 serves as a reservoir portion 3, and a drainage channel 4 is continuously formed in the reservoir portion 3.

  The rim portion 2 has an inner wall surface projecting inward, the inside is a closed type, and a part of the inner wall surface is a shelf portion 5. A washing water supply path 6 is formed at the upper part of the rear part of the toilet bowl, and the tip of the washing water supply path 6 serves as a rim discharge outlet 7 for the washing water on the right side of the toilet bowl. It discharges horizontally along the inner surface of the rim part 2, further swivels along the shelf part 5, and collects from the middle while forming the main flow of washing water from a position slightly beyond the toilet tip with a small radius of curvature. Head for water part 3.

  A tip of the drainage channel 4 serves as a drainage port 8 that opens into the reservoir 3, and an intermediate part of the drainage channel 4 serves as a trap unit 9. A throttle portion 10 is provided in the drainage channel 4 on the downstream side of the trap portion 9. The throttle unit 10 is for restricting the amount of drainage when the cleaning water is supplied, and for filling the space causing the siphon action (the space of the trap unit) with the cleaning water.

  In the present embodiment, the degree of restriction of the restriction unit 10 is made looser than that of a normal siphon type toilet. As a result, since the pulling is not strong until the air is further sucked after the stored water is drawn, the siphoning sound can be suppressed.

A side jet spouting port 11 as a second water spouting port is formed on the side wall of the bowl portion 1 on the side where the rim water spouting port 7 is formed. The side jet outlet 11 is located near the water level rising position of the water reservoir 3, more specifically, at a position below the water surface when the water level becomes the highest as a result of the supply of cleaning water into the bowl portion 1 during cleaning. A water discharge port 11 is formed.
By adopting such a configuration, the washing water from the jet outlet 11 forms a swirling flow in the vertical direction, and it becomes possible to stir the filth floating on the surface of the stored water into the stored water, Since the swirling flow in the vertical direction flows toward the drainage port 8 while entraining the dirt as it is, it is possible to sufficiently ensure the effect of discharging the dirt even if the siphon action is weak.

The operation of the flush toilet having the above configuration will be described with reference to FIGS.
First, in FIG. 3A, in the initial state, the stored water and floating waste are present in the stored water portion 3. From this state, cleaning water is supplied from the rim water spouting port 7 and the side jet water spouting port 11. Then, as shown in FIG.3 (b), the water level of the water storage part 3 rises.

  However, as described above, in the present embodiment, the degree of throttling of the throttling portion 10 is loosened, so that the inside of the trap portion 9 does not become full immediately.

  However, during this time, the swirling water from the spout 11 forms a swirling flow in the vertical direction in the reservoir 3 and is sufficiently covered by the swirling flow in the vertical direction as shown in FIG. The filth floating on the upper surface of the water is drawn into the drainage channel 4.

  Thereafter, as shown in FIG. 3 (c), the inside of the trap unit 9 is filled with water, and the washing water containing dirt is discharged by the siphon action, and the siphon action is stopped as shown in FIG. 3 (d). To do. Since the siphon action is suppressed at this time, the drop in the water level is small and the inhalation of air is suppressed, so there is almost no siphon sound. Further, since the retained water remains, there is an advantage that it is not necessary to replenish the retained water (refill washing water).

  FIG. 5 is a sectional view similar to FIG. 1 showing another embodiment. In this embodiment, the delay means for delaying the time until the space causing the siphon action (the space of the trap portion) is filled with the washing water. As a result, the volume of the trap portion 9 is increased.

  If the volume of the trap portion 9 is increased, the siphon action is suppressed, and thus the siphon break noise can be suppressed as described above.

Cross section of flush toilet according to the present invention Plan view of flush toilet according to the present invention (A)-(d) is the figure explaining the effect | action of the flush toilet which concerns on this invention. The figure explaining the swirling flow of the up-down direction among the actions of the flush toilet according to the present invention Cross-sectional view of a flush toilet according to another embodiment Sectional drawing explaining the effect | action of the conventional siphon type flush toilet

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Bowl part, 2 ... Rim part, 3 ... Reservoir part, 4 ... Drainage channel, 5 ... Shelf part, 6 ... Washing water supply channel, 7 ... Rim discharge port, 8 ... Drainage port, 9 ... Trap, 10 ... Restriction part, 11... Jet discharge port.

Claims (3)

In the flush toilet which wash | cleans a bowl surface with the wash water from a rim spout and forms a swirl flow in the up-and-down direction in the reservoir part with the wash water from a side jet outlet, and pours the filth in the reservoir part into the drainage channel, This flush toilet is provided with siphon action suppression means for the space that causes the siphon action of the drainage channel. 2. The flush toilet according to claim 1, wherein the throttle part provided at a downstream side of the space causing the siphon action is loosened as the siphon action suppressing means. The flush toilet according to claim 1, wherein a volume of a space causing a siphon action is increased as the siphon action suppressing means.