CN104074247B - Flush toilet device - Google Patents

Abstract

The invention provides a kind of flush toilet device, it is utilize water jet pump to the flush toilet device of the mode of pelvic part supply washing water, in the formation trunnion entirety being formed as reverse U shape be accommodated in small-sized water tank, and the efficiency of water jet pump effect also can not reduce.This flush toilet device (FT) possesses water tank (20) and jet pump units (300).The trunnion (320) of jet pump units (300) has: the first line part, is formed as extending with linearity from intake (331) towards oblique upper; And second line part, be formed as extending towards the entrance on the water guide road (130) being positioned at lower side with linearity, its entirety becomes the pipe of reverse U shape under side-looking.Trunnion (320) is configured to, and makes the central axis of the second line part less relative to vertical angulation than the central axis of the first line part relative to vertical angulation under side-looking.

Description

Flush toilet device

Technical field

The present invention relates to a kind of flush toilet device utilizing washing water dirt to be expelled to gutter.

Background technology

As the mode for the pelvic part supply washing water to flush toilet device, there will be a known and utilize the high hydraulic pressure in running water pipe for the mode (direct press type) of feedwater or the mode (water tank type) supplying feedwater from the pinnacled water tank of configuration.

Because direct press type flush toilet device is the device water in running water pipe being directly supplied to pelvic part, clean therefore, it is possible to carry out continuous print.But, because the flow of washing water reduces when being arranged on hydraulic pressure in running water pipe low environment, therefore there is the problem that washing (-)off properties reduces.

Because water tank type flush toilet device utilizes the potential energy of the water be stored in water tank to pelvic part for the device fed water, be not therefore subject to the impact of the hydraulic pressure in running water pipe just can supply the washing water of large discharge.But, need to carry out water filling to water tank after cleaning, be therefore difficult to carry out continuous print and clean, there is the problem being unsuitable for the situation that flush toilet device is used by frequent.

Except aforesaid way, a kind of water jet pump that utilizes is proposed in recent years to the flush toilet device of the mode of pelvic part supply washing water.Such as in the flush toilet device described in following patent document 1, possess the water tank of storage of water, be configured with jet pump units in the inside of this water tank with the state be submerged.Jet pump units has trunnion, and one end of this trunnion is connected to towards the stream of pelvic part, is formed with opening at the other end.From injection nozzle via opening with during towards the mode injection water of trunnion inside, bring out water jet pump effect, flow through the water of large discharge in the inside of trunnion towards pelvic part thus.Be not only the water sprayed from injection nozzle, flow through the inside of trunnion because the water be stored in water tank is also drawn into, therefore to the water of pelvic part supply large discharge.

So, because the flush toilet device of mode utilizing water jet pump to supply washing water utilizes water jet pump effect to the device of the water of pelvic part supply large discharge, therefore can the hydraulic pressure of restraint measure in running water pipe low environment time the reduction of washing (-)off properties.In addition, the washing water total amount to pelvic part supply is roughly equal with the water yield added in the water yield being stored in water tank after the water yield of spraying from nozzle.Therefore, need the water yield that is stored in advance in water tank fewer than the situation of existing water tank type, can water tank miniaturization be made.In addition, although need to carry out water filling to water tank after pelvic part clean completes, the time needed for water filling is shorter than the situation of water tank type, cleans even if therefore also can carry out continuous print when flush toilet device is used by frequent.

Patent document 1: Japanese Laid-Open 2004-156382 publication

Utilizing water jet pump to supply in the flush toilet device of the mode of washing water, there is the flow of water in trunnion and reduce because of the efficiency reduction of water jet pump effect, thus to the situation that the discharge that pelvic part supplies reduces.Its result, exists and fails to discharge dirt from pelvic part or fully do not clean the situation on pelvic part surface.

Can think that the efficiency reduction of water jet pump effect interferes because of the inner face and current that produce viscous flow vortex or trunnion in the current in trunnion, the resistance of result suffered by larynx in-pipe flow becomes large and produces.Thus, in order to bring out water jet pump effect (in order to by the water in water tank efficiently suction trunnion) efficiently, needing the interference suppressing viscous flow vortex as described above or trunnion inner face, suppressing the resistance suffered by larynx in-pipe flow.

Viscous flow vortex in current in trunnion is not mainly the part (part that stream is bending) of linearity because of the high-velocity flow stream arrived in trunnion from nozzle, and these current are peeled off from trunnion inner face and produced.Especially due to the jet close to nozzle near the entrance of trunnion, therefore high-velocity flow is in the state be partially in flowing path section in a part of region, thus easily produces stripping as described above.Thus, the stream in trunnion is bending near entrance, can says and easily produce viscous flow vortex.

So, in order to suppress to produce viscous flow vortex, can consider to impose measure to the shape of trunnion.Specifically, can consider that entrance from trunnion is until its downstream, form the straight sections that the injection direction along injection nozzle extends with linearity.

Velocity flow profile in flowing path section homogenising gradually during water flows through straight sections.Therefore, in the flowing path section in the downstream in straight sections, high-velocity flow be in almost do not have inclined state.Its result, is not easy to produce stripping as described above in than the sweep of straight sections downstream, is also not easy to produce viscous flow vortex.

In sweep, the inner face of trunnion and current are interfered, and the direction of advance of current is changed (current collide).When if the stream in trunnion is bending near entrance (when straight sections is shorter), then because high-velocity flow is being partially the interference being subject to trunnion inner face under the state in flowing path section in a part of region, therefore at trunnion inner easily generation adverse current or viscous flow vortex, thus water jet pump effect is hindered.On the other hand, if be formed with longer straight sections at the upstream side of trunnion as described above, then the inclined of high-velocity flow is relaxed in state, suppresses the interference of (especially at entrance side) trunnion inner face on the impact of current.

So, in order to suppress the resistance suffered by larynx in-pipe flow, suppress the efficiency of water jet pump effect to reduce thus, it is then effective for forming sufficiently long straight sections at the upstream side (entrance side) of trunnion.

But, when the mode being adequately suppressed the length of degree forms above-mentioned straight sections longer like that, trunnion can be caused together to maximize with it, thus the water tank being accommodated in inside also can maximize with the interference becoming viscous flow vortex or trunnion inner face.

In addition, for making flush toilet device integral miniaturization, and wishing rear side top water tank being configured in lavatory pan body, reducing the size on the fore-and-aft direction of flush toilet device thus.Now, become from water tank bottom surface to lavatory pan body for feedwater.Therefore, on the basis making trunnion be formed as in reverse U shape under side-looking, need its entirety instead of a part to be accommodated in water tank inside.In this formation, when forming the straight sections of sufficient length at the upstream side of trunnion, water tank can maximize further.

So, although adopting by an advantage of the mode of water jet pump supply washing water is to make water tank miniaturization, or when the efficiency of water jet pump effect will be suppressed imposing measure to the shape of trunnion to reduce, causing water tank to maximize, there is the problem damaging above-mentioned advantage.

Summary of the invention

The present invention carries out in view of above-mentioned problem, its object is to provide a kind of flush toilet device, it is utilize water jet pump to the flush toilet device of the mode of pelvic part supply washing water, in the formation trunnion entirety being formed as reverse U shape be accommodated in small-sized water tank, and the efficiency of water jet pump effect also can not reduce.

In order to solve above-mentioned problem, flush toilet device involved in the present invention is the flush toilet device utilizing washing water dirt to be expelled to gutter, it is characterized in that, possess: lavatory pan body, there is the pelvic part catching dirt, be formed with the water guide road for the described pelvic part that led by the water supplied as washing water in inside; Water tank, at internal storage water, it is configured in the rear side top of described lavatory pan body, this water can be supplied to the entrance on described water guide road; And jet pump units, be configured in the inside of described water tank, described jet pump units has: trunnion, the entrance on its described water guide road for one end is connected to and be formed with the pipe of intake at the other end, and described intake is configured to the bottom being arranged in described water tank inside; And nozzle, by from described intake to the internal spray of described trunnion water at a high speed, thus bring out water jet pump effect, described trunnion has: the first line part, is formed as extending with linearity from described intake towards oblique upper; The bend formed deviously is the part than described first line part downstream; Second line part, it is the part than described bend downstream, be formed as extending towards the entrance on the described water guide road being positioned at lower side with linearity, its entirety becomes the pipe of reverse U shape under side-looking, it is configured under side-looking, make the central axis of described second line part less relative to vertical angulation than the central axis of described first line part relative to vertical angulation, and the flow path cross sectional area of described first line part is formed as diminishing gradually along with leading to downstream from upstream side on the whole.

Flush toilet device involved in the present invention possesses water tank and jet pump units as the mechanism for the pelvic part supply washing water to lavatory pan body.

Water tank is at internal storage water, and it is configured in the rear side top of lavatory pan body, this water can be supplied to the entrance on water guide road.Water guide road refers to the stream of the water being formed in lavatory pan body interior, and it is formed as the water supplied from its entrance to lead as washing water pelvic part.

Because water tank is configured in the rear side top of lavatory pan body, in other words, owing to being configured to make a part for a part for water tank and lavatory pan body overlapped under overlooking, the size of the flush toilet device entirety therefore on fore-and-aft direction diminishes.

Jet pump units is configured in the inside of water tank, has trunnion and nozzle.

Trunnion is that one end is connected to the entrance on water guide road and is formed with the pipe of intake at the other end.As described later, above-mentioned intake be utilize water jet pump effect and the water be stored in water tank is sucked trunnion inner time the opening becoming entrance, it is configured in the bottom in water tank inside.The water being stored in water tank inside flows through trunnion inside from this intake and flows into water guide road, and is directed to pelvic part.

Nozzle is the parts being brought out water jet pump effect by the water of the high speed from intake to trunnion internal spray.From nozzle to trunnion internal spray during water at a high speed, utilize this current, the water being stored in water tank inside is drawn into the inside of trunnion.Its result, the discharge flowing to water guide road along trunnion inside is more than the discharge of spraying from nozzle.

Trunnion has: the first line part, is formed as extending with linearity from intake towards oblique upper; The bend formed deviously is the part than the first line part downstream; And second line part, be the part than bend downstream, extend towards the waterway inlet of leading being positioned at lower side with linearity, its entirety becomes the pipe of reverse U shape under side-looking.

Because the first line part is formed as extending with linearity from intake towards oblique upper, the length of the straight section of trunnion middle and upper reaches side therefore can be guaranteed in water tank inside.

In addition, trunnion is configured as follows in water tank, and (downstream) second central axis of line part is little relative to vertical angulation relative to the central axis of vertical angulation ratio (upstream side) first line part.

By this formation, thus about the length along water tank fore-and-aft direction, the length of the first line part is longer than the length of the second line part.Therefore, the major part in space limited in water tank effectively can be utilized as following space, namely for guarantee in order to produce water jet pump effect efficiently and the length of the first line part.That is, even if being integrally provided in by the trunnion be made up of the first line part, bend and the second line part in forming in small-sized water tank, the length of the first line part also fully can be guaranteed.

Due to flow through velocity flow profile in the flowing path section of the water of the first line part inside before arrival bend during by full and uniformization, therefore can suppress to produce viscous flow vortex in the inside of trunnion, or the inner face of trunnion is interfered with the high-velocity flow of local.Its result, owing to can suppress the resistance suffered by larynx in-pipe flow, suppresses the efficiency of water jet pump effect to reduce, therefore, it is possible to make flow increase also guide water route efficiently supply feedwater.

In addition, in flush toilet device involved in the present invention, also preferred described water tank the second water tank portion of having the first water tank portion and being formed in the mode that a part for the diapire making described first water tank portion extends downwards, described intake is configured in be overlooked down on the position overlapping with described second water tank portion.

In the preferred embodiment, water tank the second water tank portion of there is the first water tank portion and being formed in the mode that a part for the diapire making this first water tank portion extends downwards.In addition, the intake (lower end of the first line part) of trunnion is configured in and overlooks down on the position overlapping with the second water tank portion.In other words, in the lower side of intake, a part for tank bottom wall is in the shape extended downwards.

By becoming this formation, thus the intake of trunnion can be configured in more below, guarantee the length of the first line part more fully.In addition, although need to configure nozzle in the space of ratio intake in water tank side on the lower, the inside in the second water tank portion can be utilized as space for this reason.In other words, do not need to shorten the first line part at the below of intake configuration nozzle.

In addition, in flush toilet device involved in the present invention, also preferably described first line part is formed as making the flow path cross sectional area in downstream less than the flow path cross sectional area of upstream side.

In the inside of the first line part, from the view point of the velocity flow profile homogenising made in flowing path section, wish that flow path cross sectional area is less.If flow path cross sectional area is less, velocity flow profile then owing to flowing through the water of the first line part is homogenized in a shorter period, therefore in the first line part of finite length, (before water arrives bend) can make velocity flow profile homogenising effectively.

On the other hand, from producing water jet pump effect efficiently, the viewpoint that the washing water of large discharge is supplied to pelvic part being set out, wishing that flow path cross sectional area in the first line part is comparatively large, especially wish that the aperture area of the entrance of water and intake is larger.

So in the preferred embodiment, the first line part is formed as making the flow path cross sectional area in downstream less than the flow path cross sectional area of upstream side.Because the flow path cross sectional area of upstream side is comparatively large, its result, the aperture area of intake is also comparatively large, therefore can produce water jet pump effect efficiently, the washing water of large discharge is supplied to pelvic part.

In addition, because the flow path cross sectional area in downstream diminishes, therefore flow through velocity flow profile in the flowing path section of the water of the first line part before water arrives bend by homogenising effectively.Its result, can suppress the inner face producing vortex or trunnion in the inside of trunnion to be interfered with the high-velocity flow of local further.

In addition, in flush toilet device involved in the present invention, also preferably described first line part is formed as inner wall surface thereof entirety smoothly, and leads to downstream along with from upstream side, and its flow path cross sectional area gradually changes.

Unsmooth at the internal face of the first line part, such as, when being formed with bight in a part, then current are peeling in this part sometimes, produce viscous flow vortex thus.Its result, the efficiency of water jet pump effect reduces sometimes.

So in the preferred embodiment, it is overall level and smooth that the first line part is formed as inner wall surface thereof, and lead to downstream along with from upstream side, and its flow path cross sectional area gradually changes.By this formation, the stripping or the viscous flow vortex that produce current in the inside of the first line part can be suppressed further.

In addition, in flush toilet device involved in the present invention, also preferably described second line part is formed as inner wall surface thereof entirety smoothly, and leads to downstream along with from upstream side, and its flow path cross sectional area gradually changes.

As mentioned above, more lead in the then less mode in downstream making the flow path cross sectional area of the first line part, consider that the velocity flow profile of the water making to flow through becomes the same, the flow path cross sectional area (being alternatively the flow path cross sectional area in the upstream-side-end of bend and the second line part) in the end of downstream side of the first line part is designed to become best size.

On the other hand, consider the washing water of the water guide road supply large discharge to lavatory pan body, the flow path cross sectional area in the end of downstream side of the second line part is designed to become best size.Thus, the best size of the flow path cross sectional area in the upstream-side-end of the second line part is mutually different from the best size of the flow path cross sectional area in end of downstream side.

So in the preferred embodiment, the second line part is formed as leading to downstream along with from upstream side, and its flow path cross sectional area gradually changes.By this formation, the flow path cross sectional area at the second line part two ends can be made to become mutually different sizes, to make respective optimization.In addition, the internal face due to the second line part is overall level and smooth, does not form bight etc., therefore can not produce stripping or the viscous flow vortex of current in the inside of the second line part.Its result, can suppress the efficiency of the water jet pump effect in trunnion to reduce further.

In addition, in flush toilet device involved in the present invention, also preferably described first line part is configured under overlooking, and is in the state that its central axis is tilted relative to the fore-and-aft direction of described water tank.

In the preferred embodiment, the first line part is configured to be under overlooking the state that its central axis is tilted relative to the fore-and-aft direction of water tank.That is, overlook the central axis of lower first line part not along fore-and-aft direction or the left and right directions of water tank, but tilting (being alternatively tilt relative to left and right directions) relative to the fore-and-aft direction of water tank.

Owing to making the first line part not only have a down dip in side-looking, also tilt under overlooking, therefore more effectively can utilize the space in water tank, thus fully guarantee the length of the first line part.Its result, can form flush toilet device entirety compactly, and the efficiency of water jet pump effect can also be suppressed further to reduce.

In addition, in flush toilet device involved in the present invention, also preferably possess further: lever, is arranged on the lateral surface of described water tank; Valve cell, is configured in the inside of described water tank, switches for the opening and closing of nozzle described in subtend for the stream of feedwater; And transmission mechanism, for the action of described lever is passed to described valve cell, in described valve cell and described transmission mechanism, at least one is configured in the top of the first line part described in described water tank inner space.

In the preferred embodiment, the lever be arranged on water tank lateral surface is possessed.In addition, possess in the inside of water tank: valve cell, switch for the opening and closing of subtend nozzle for the stream of feedwater; And transmission mechanism, for the action of lever is passed to aforementioned valve cell.User operates lever, when its action being passed to valve cell via transmission mechanism, starts from nozzle injection water and clean pelvic part.

At this, the first line part due to trunnion is configured to its central axis is tilted relative to vertical, therefore above the first line part, is formed with space.So in the preferred embodiment, by valve cell and transmission mechanism, at least one is configured in the top of the first line part, can effectively utilize the space be formed in above the first line part thus, and water tank can be suppressed to maximize.

In addition, in valve cell, sometimes comprise vacuum breaker, in transmission mechanism, sometimes also comprise electro-motor.That is, valve cell or the transmission mechanism situation that must be configured on the position that is not submerged in water tank is more.To this, due to be formed in space above the first line part be at least partially water tank be in full water water level time the space that is not also submerged, even if therefore valve cell or transmission mechanism are configured in this space, also can not be submerged and the bad phenomenon caused.

According to the present invention, a kind of flush toilet device can be provided, it is utilize water jet pump to the flush toilet device of the mode of pelvic part supply washing water, and in the formation trunnion entirety being formed as reverse U shape be accommodated in small-sized water tank, and the efficiency of water jet pump effect also can not reduce.

Accompanying drawing explanation

Fig. 1 is the sectional view of the flush toilet device represented involved by first embodiment of the invention.

Fig. 2 is the top view of the flush toilet device shown in Fig. 1.

Fig. 3 is the figure of the water tank inside representing the flush toilet device shown in Fig. 1.

Fig. 4 is the figure of the water tank inside representing the flush toilet device shown in Fig. 1.

Fig. 5 is the exploded perspective view of the concrete structure representing the trunnion being configured in the water tank inside shown in Fig. 3.

Fig. 6 is the figure of the action for illustration of the trunnion shown in Fig. 5.

Fig. 7 is the figure of the formation of the water tank inside representing the flush toilet device shown in Fig. 1.

Fig. 8 is the figure that medelling represents the velocity flow profile of the shape of trunnion and the current of inside thereof.

Fig. 9 is the top view representing the intake of trunnion and the position relationship of lavatory pan body.

Figure 10 is the top view of the formation of the water tank inside of the flush toilet device represented involved by second embodiment of the invention etc.

Figure 11 is the front view of the formation of the water tank inside representing the flush toilet device shown in Figure 10.

Figure 12 is the figure that the phenomenon for becoming level to the water surface entirety in water tank is described.

Figure 13 is the figure that medelling represents the current of the water tank inside of the flush toilet device shown in Figure 10.

Figure 14 is the figure that medelling represents the mounting structure of the water tank in the flush toilet device shown in Figure 10.

Symbol description

10,10a-lavatory pan body; 101, above 101a-; 110,110a-pelvic part; 120-inner edge portion; 130,130a-water guide road; 131-entrance; 132-first water guide road; 133-exports; 134-second water guide road; 135-exports; 140-drain elbow pipeline; 141-rising stream; 142-decline stream; 20,20a-water tank; 201-upper cover; 210,210a-first water tank portion; 211,211a-diapire; 212-opening; Wall on front side of 213-; Wall on the left of 214-; 220,220a-second water tank portion; 221,221a-diapire; 231,231a-feed pipe; 232-constant flow rate valve; 233,233a-main valve; 234-pilot valve; 235,235a-vacuum breaker; 236, the manual handle of 236a-; 237,237a-transmission mechanism; 238,238a-float; 239,239a-tube connector; 240,240a-dividing plate; 241,241a-opening and closing window; 260, the little water tank of 260a-; 300,300a-jet pump units; 310,310a-nozzle; 311,311a-jet; 320,320a-trunnion; 330-first trunnion; 331,331a-intake; 332-opening; 333-projection; 341-axle; 350-aux. venturi; 351-vertical portion; 352-bend; 353-opening; 354-block; 380-float; 381-inclined plane; 390a-stream switching mechanism; 391a-float; B-bolt; FT, FTa-flush toilet device; SW-gutter; VU, VUa-valve cell; The WS-water surface; WT-water shutoff.

Detailed description of the invention

Below, with reference to accompanying drawing, embodiments of the present invention are described.To facilitate understanding of the description, in the drawings and in which identical symbol is marked as much as possible to identical inscape, omit repeat specification.

With reference to Fig. 1 and Fig. 2, the flush toilet device involved by first embodiment of the invention is described.Fig. 1 is the sectional view of flush toilet device FT, and section during flush toilet device FT is cut off in expression along the face perpendicular to its left and right directions.Fig. 2 is the top view of flush toilet device FT.In fig. 2, in order to represent the internal construction of the water tank 20 illustrated below, draw the state of the upper cover 201 pulling down water tank 20.

As shown in Figures 1 and 2, flush toilet device FT possesses lavatory pan body 10 and is arranged on the water tank 20 above on 101 of lavatory pan body 10 at the rear side (in Fig. 1 right side, in Fig. 2 upside) of lavatory pan body 10.Flush toilet device FT catches dirt by lavatory pan body 10, and utilizes the water (washing water) supplied from water tank 20 this dirt to be expelled to the device of gutter SW.

In addition, in the following description, only otherwise do specified otherwise, then look from the user of the state be sitting in lavatory pan body 10 and right side (in Fig. 2 left side) to be called on " right side ", looking from the user of the state be sitting in lavatory pan body 10 is called left side (in Fig. 2 right side) in " left side ".In addition, look front side (on the left of in Fig. 1 from the user of the state be sitting in lavatory pan body 10, downside in Fig. 2) be called " front side " or " front side ", look from the user of the state be sitting in lavatory pan body 10 and rear side (in Fig. 1 right side, in Fig. 2 upside) is called " rear side " or " rear side ".

Lavatory pan body 10 has pelvic part 110, inner edge portion 120, water guide road 130 and drain elbow pipeline 140.Pelvic part 110 is the parts temporarily catching the dirt fallen from top.Inner edge portion 120 is formed in the rising wood of pelvic part 110, as shown in Figure 1, and the shape that the part in the medial surface making pelvic part 110 retreats to outer peripheral side.As will be explained later, inner edge portion 120 becomes the stream of the water convolution flowing supplied to pelvic part 110.Inner edge portion 120 is formed as the stream of the circular (overlooking) rounded along the upper limb of pelvic part 110.

Water guide road 130 is the streams in order to the water supplied from water tank 20 guiding pelvic part 110 being formed in lavatory pan body 10 inside.One end 101 upper sheds on lavatory pan body 10 on water guide road 130, become the entrance 131 of the water supplied from water tank 20.The position being formed with entrance 131 is the part of rear side in 101 above of lavatory pan body 10, and the middle body of left and right directions.

Water guide road 130 branches into two streams (the first water guide road 134, water guide road 132, second) in its downstream.The outs open on the stream i.e. end of downstream side on the first water guide road 132 right side in inner edge portion 120 of side, this opening becomes the outlet 133 of water.During from water tank 20 to entrance 131 for feedwater, its part, through the inside on the first water guide road 132, sprays from outlet 133 and is supplied to inner edge portion 120.

The stream i.e. end of downstream side on the second water guide road 134 of opposite side left side and outs open near rear in inner edge portion 120, this opening becomes the outlet 135 of water.During from water tank 20 to entrance 131 for feedwater, its part, through the inside on the second water guide road 134, sprays from outlet 135 and is supplied to inner edge portion 120.

Water is the direction of the circumference along the inner edge portion 120 being formed as circular stream from the direction that outlet 133 sprays, and is counterclockwise overlooking lower.Water is also the direction of the circumference along the inner edge portion 120 being formed as circular stream from the direction that outlet 135 sprays, and is counterclockwise overlooking lower.Therefore, the water sprayed to inner edge portion 120 from outlet 133 and outlet 135 all to circle round flowing counterclockwise along inner edge portion 120, and flows down from inner edge portion 120 entirety to pelvic part 110.

Drain elbow pipeline 140 connects the lower end of pelvic part 110 and the stream of gutter SW.Drain elbow pipeline 140 has: rising stream 141, is formed as along being upstroke slope from the lower end of pelvic part 110 towards the direction in downstream; And decline stream 142, be formed as along being descending grade from the upper end of rising stream 141 towards the direction in downstream.By this formation, can in the part from the lower transition of pelvic part 110 to the bottom of rising stream 141 storage of water, utilize the water of storage to form water shutoff WT.Gutter SW is connected with in the lower end of decline stream 142.Gutter SW is the pipe arrangement being configured in interior of building, and the end in its downstream is connected to sewer pipe.

During from water tank 20 to pelvic part 110 for feedwater, as mentioned above, this water circles round along inner edge portion 120 and flows, and flows down from inner edge portion 120 entirety to pelvic part 110.Add water relative to pelvic part 110 from top, it is discharged from bottom via rising stream 141 and decline stream 142.Its result, the water (water shutoff WT) be stored in pelvic part 110 produces downward current.

In pelvic part 110, utilized the water that supplies from the inner edge portion 120 of top by the dirt temporarily caught and be pushed to below, the lower end to pelvic part 110 is moved.Thereafter, dirt utilizes current and arrives decline stream 142 through rising stream 141, falls together with water to gutter SW.

Water tank 20 is the containers at internal storage water, for this water being supplied to the entrance 131 on water guide road 130.The second water tank portion 220 that water tank 20 has the first water tank portion 210 and formed in the mode that a part for the diapire 211 making the first water tank portion 210 extends downwards.First water tank portion 210 and the second water tank portion 220 are all the containers of roughly cuboid, and both inner spaces are interconnected.Second water tank portion 220 is connected in the part of rear side in the diapire 211 in the first water tank portion 210.

The diapire 211 in the first water tank portion 210 (part than side on the front, the second water tank portion 220) relative to lavatory pan body 10 above in 101 the part of rear side be in the state close from top.Specifically, although on lavatory pan body 10 in 101 rear side part on be formed with entrance 131, but the diapire 211 in the first water tank portion 210 above 101 is in the state close from top relative to lavatory pan body 10, cover entrance 131 around from top.In addition, diapire 211 is formed with the opening 212 of the roughly same shape with entrance 131, opening 212 and entrance 131 overlook lower overlap.Therefore, the water being stored in water tank 20 inside flows into the inside on water guide road 130 via opening 212 and entrance 131, can flow to pelvic part 110.

As above configure the result in the first water tank portion 210, the second water tank portion 220 is positioned at rear compared with lavatory pan body 10.That is, the state being positioned at more rear side compared with the rear side end of lavatory pan body 10 is in.In addition, the diapire 221 in the second water tank portion 220 is configured on the 101 low positions above than lavatory pan body 10.

By as above configuring water tank 20, thus the leading section of water tank 20 is positioned at front side compared with the rearward end of lavatory pan body 10.In addition, the bottom of water tank 20 is positioned at lower side compared with above lavatory pan body 10.Its result, the size of the fore-and-aft direction of flush toilet device FT entirety and the size of above-below direction all diminish, and the design of flush toilet device FT improves.

In addition, owing to only the second water tank portion 220 to be arranged on the lower side on the lower above than lavatory pan body 10 in water tank 20, the water-head of the water be stored in water tank 20 can therefore be kept.Its result, as mentioned above, can realize the miniaturization of flush toilet device FT entirety, and can also keep the performance of the jet pump units 300 illustrated (supplying the performance of the water of ormal weight and regulation flow to inner edge portion 120) below.

Below, the Inner Constitution of water tank 20 is described.Fig. 3 is the rear elevation of water tank 20 inside represented when observing flush toilet device FT from rear side.In addition, Fig. 4 is the stereogram of water tank 20 inside represented when observing flush toilet device FT from rear side.As shown in Figures 3 and 4, feed pipe 231, main valve 233, pilot valve 234 and jet pump units 300 is configured with in the inside of water tank 20.

Feed pipe 231 is the pipes for supplying feedwater to main valve 233, and it is configured to extend above vertical from the diapire 221 in the second water tank portion 220.One end of feed pipe 231 is connected to not shown running water pipe in the outside of water tank 20.In addition, the other end (upper end) of feed pipe 231 is connected to main valve 233 from below in the inside of water tank 20.On position on the left of feed pipe 231 is configured in the inside of water tank 20 and is in compared with the central authorities of left and right directions.

Constant flow rate valve 232 not shown in Fig. 3 and Fig. 4 is configured with in the midway (between running water pipe and main valve 233) of feed pipe 231.The state opened at main valve 233 dirty enter the discharge of main valve 233 utilize constant flow rate valve 232 and in certain, can not change because of the hydraulic pressure of running water pipe.

Main valve 233 is open and close valves, and it carries out the opening and closing from feed pipe 231 towards the stream of the water of jet pump units 300.Between main valve 233 and jet pump units 300, possess vacuum breaker 235, the upstream side of vacuum breaker 235 is in the anti-sealing adverse current of negative pressure.In addition, as mentioned above, feed pipe 231 extends upward, and main valve 233 and vacuum breaker 235 are configured on position higher in water tank 20.Therefore, even if under the state being in full water at water tank, vacuum breaker 235 also can not be submerged.

Pilot valve 234 is possessed, in the formation that the opening and closing utilizing the action of pilot valve 234 to main valve 233 switches in main valve 233.Pilot valve 234 is connected with via the transmission mechanism 237 being configured in water tank 20 inside the manual handle 236 be configured in outside water tank 20.In addition, pilot valve 234 is also connected with the float 238 being configured in water tank 20 inside.

When operating manual handle 236 by the user of flush toilet device FT, this operation is passed to pilot valve 234 via transmission mechanism 237, and pilot valve 234 is opened.Main valve 233 is in the state be opened thus, and water flows to jet pump units 300 from feed pipe 231.As will be explained later, the water flowing to jet pump units 300 is supplied to water guide road 130 as washing water together with being stored in the water of water tank 20 inside.Therefore, the water level of water tank 20 inside reduces gradually.

After the clean end of pelvic part 110, main valve 233 is not closed yet, and water continues to flow to jet pump units 300 from feed pipe 231.The water flowing to jet pump units 300 is supplied to the inside of water tank 20, stores in order to next time cleans.Time carrying out supplying water (to water tank 20 water filling) in inside to water tank 20, the water level of water tank 20 inside rises gradually.The float 238 being connected to pilot valve 234 in the inside of water tank 20 rises with the rising of water level, and pilot valve 234 is closed thus.That is, when the water level of water tank 20 inside rises, the buoyancy of pilot valve 234 suffered by float 238 changes and is closed.When pilot valve 234 is closed, main valve 233 is in pent state, stops from feed pipe 231 to jet pump units 300 for feedwater.Regulate the configuration of float 238, the amount (becoming the full water water level of regulation) making the water yield being now stored in water tank 20 inside become required in order to next time cleans.

Jet pump units 300 brings out water jet pump effect by the water supplied from feed pipe 231, supplies water thus for guide water route 130.Jet pump units 300 has nozzle 310 and trunnion 320.

Nozzle 310 is that one end is connected to vacuum breaker 235 via tube connector 239, is formed with the pipe of jet 311 at the other end.Nozzle 310 is configured near the diapire 221 in the second water tank portion 220.When main valve 233 is opened, flows through tube connector 238 from the water of feed pipe 231 supply and arrive nozzle 310, ejecting from jet 311 as high-velocity flow.Nozzle 310 is configured in rear side in the second water tank portion 220 and one of right side jiao (one jiao under overlooking).As shown in Figures 3 and 4, nozzle 310 is in U-shaped, turns back from above-mentioned one jiao in its downstream.Under state as shown in Figures 3 and 4, jet 311 makes its injection direction towards the inside of trunnion 320.

Trunnion 320 is the rounded pipes in cross section, through be formed at diapire 211 opening 212 state under be configured in the inside of water tank 20.One end of trunnion 320 is connected to the entrance 131 on water guide road 130, is formed with opening and intake 331 at the other end.The part of entrance 131 side on the water guide road 130 of trunnion 320 is along vertical, and the part of intake 331 side is inclined relative to horizontal.Therefore, it is overall in reverse U shape.As shown in Figure 2, trunnion 320 is configured in the inside of water tank 20 under overlooking with the state tilted relative to fore-and-aft direction.

The concrete formation of trunnion 320 is described with reference to Fig. 5.Fig. 5 is the exploded perspective view of trunnion.As shown in Figure 5, trunnion 320 is in the formation making two pipes (the first trunnion 330, aux. venturi 350) be connected in series to be a pipe.

First trunnion 330 is parts of intake 331 side in trunnion 320, as mentioned above, is the part of the state configuration be inclined relative to horizontal.First trunnion 330 is cylindrical tube of its caliber roughly uniformity on the whole.Opening and intake 331 is formed in the lower end of the first trunnion 330.First trunnion 330 is alternatively be formed as from intake 331 obliquely upward with the part (the first line part) that linearity extends.

Intake 331 is formed as making the overall face along the inclined relative to the first trunnion 330, its edge, and under the state shown in Fig. 3 and Fig. 4, the edge of intake 331 is along horizontal plane.That is, the edge of intake 331 is parallel with the water surface in water tank.On the other hand, the face of edge along the central axis relative to the first trunnion 330 of the opening 332 of the first trunnion 330 upper end is formed in.Be fixed with float 380 in the bottom bolt B of the first trunnion 330, it surrounds the surrounding (side) of intake 331.

Aux. venturi 350 is parts of side, water guide road 130 in trunnion 320.Aux. venturi 350 has: vertical portion 351, extends above vertical from the entrance 131 on water guide road 130 with linearity; And bend 352, bending towards the mode of the first trunnion 330 with the upper end from vertical portion 351.In bend 352, the end of the first trunnion 330 side is formed with opening 353.The edge of opening 353 is along the face vertical relative to the path direction of the bend 352 in this part.

Vertical portion 351 is cylindrical tube of its caliber roughly uniformity on the whole.Vertical portion 351 is the parts than bend 352 downstream, is alternatively the part (the second line part) being formed as extending towards the entrance 131 on the water guide road 130 being positioned at lower side with linearity.The caliber in vertical portion 351 is larger than the caliber of the first trunnion 330.In bend 352, the caliber of side, vertical portion 351 is equal with the caliber in vertical portion 351.In addition, in bend 352, the caliber of the first trunnion 330 side is equal with the caliber of the first trunnion 330.Therefore, the vertical portion 351 that caliber is mutually different can be connected by bend 352 smoothly with the first trunnion 330.

In addition, as mentioned above, although the caliber of the first trunnion 330 roughly uniformity on the whole, the caliber in vertical portion 351 also roughly uniformity on the whole, but be not strict on uniformity, caliber (also can be called flow path cross sectional area) is formed as along stream gradually and change a little.Above-mentioned caliber (flow path cross sectional area) is described in detail below.

First trunnion 330 and aux. venturi 350, under the state making opening 332 and opening 353 mutually align, connect via bar-shaped axle 341.Axle 341 is configured in the lower side of opening 332 and opening 353.In addition, axle 341 is configured to make its central axis level and relative to the central axis of the first trunnion 330.First trunnion 330 with axle 341 for axis of rotation, can move relative to aux. venturi 350 in rotary manner.Trunnion 320 is as above moved by the first trunnion 330, thus can obtain opening 332 and the mutual state abutted of opening 353 and the state being formed with gap between opening 332 and opening 353 very close to each otherly.

Outstanding projection 333 is formed near opening 332 downwards in the top side of the first trunnion 330.In addition, in the following side of aux. venturi 350 and be formed near opening 353 to raised 333 lower side extend tabular block 354.Under opening 332 and mutual very close to each other the state abutted of opening 353, front end and the block 354 of projection 333 leave.On the other hand, when the first trunnion 330 rotates for axis of rotation with axle 341, when the gap be formed between opening 332 and opening 353 becomes large gradually, the front end of projection 333 and abutting above of block 354, the first trunnion 330 cannot further rotate again.

Be described further with reference to the action of Fig. 6 to the first trunnion 330.Fig. 6 (A) represents opening 332 and the mutual state abutted of opening 353 very close to each otherly.In addition, also the position of the first trunnion 330 of this state is called " primary importance " below.

When water level in water tank 20 is full water water level, float 380 entirety being fixed on the first trunnion 330 lower end is submerged, and is subject to buoyancy.Due to this buoyancy, on the first trunnion 330, effect has the revolving force in the direction from the second place towards primary importance.Its result, the first trunnion 330 is in the state being maintained at primary importance.

As shown in Fig. 6 (A), time under the state that the first trunnion 330 is positioned at primary importance from jet 311 injection water of nozzle 310, the inside of current direction first trunnion 330 of the high speed of spraying.Part on the downside of in first trunnion 330 and nozzle 310 are submerged in the inside of the water be stored in water tank 20.Therefore, the part being stored in the water in water tank 20 is drawn into the inside of the first trunnion 330 due to the high-velocity flow sprayed from jet 311, thus flows to water guide road 130.Bring out the result of this water jet pump effect, not only from the water that the jet 311 of nozzle 310 sprays, also flow to the inside of the first trunnion 330 from the water of intake 331 surrounding suction.These water flow through water guide road 130 as washing water, be supplied to inner edge portion 120.

So, in flush toilet device FT, the discharge being supplied to inner edge portion 120 is larger than the discharge of spraying from the jet 311 of nozzle 310.In other words, even if the discharge of spraying from the jet 311 of nozzle 310 is little, the water of enough flows can also be supplied to inner edge portion 120 as washing water.Therefore, even if when the environment that hydraulic pressure flush toilet device FT being arranged on running water pipe is lower, also sufficient washing (-)off properties can be played.

In addition, the total amount being supplied to the water of inner edge portion 120 (and pelvic part 110) as washing water is the water yield add the water yield of spraying from the jet 311 of nozzle 310 in the water yield being stored in water tank 20 inside in advance after.Inner owing to not needing all washing waters to be stored in advance water tank 20, therefore water tank 20 realizes miniaturization, and its design improves.

But, be stored in the water in water tank 20, be present in the inside that can not be supplied to the first trunnion 330 than the water in intake 331 part on the lower from intake 331.Its result, remains in the inside of water tank 20 as residual water (also can be described as useless water).But as shown in Fig. 3 etc., nozzle 310 and intake 331 are all configured in (narrow) second inside in water tank portion 220.Therefore, become less than quantity of residual residual in intake 331 part on the lower.

By this formation, in flush toilet device FT, the quantity of residual at the end of can reducing for the water supply of inner edge portion 120.Its result, as the space for storing the water (can not become the water of residual water) supplied relative to inner edge portion 120, can utilize part nearly all in the inner space of water tank 20, water tank 20 can be suppressed further to maximize.

In addition, in the present embodiment, although intake 331 to be configured in the inside in the second water tank portion 220, also intake 331 can be configured in the position (and overlooking the lower position overlapping with the second water tank portion 220) slightly higher than the upper end in the second water tank portion 220.Even if in this case, the major part remaining in the useless water of intake 331 lower side is also stored in the second little water tank portion 220 of volume, can reduce the amount of useless water.

When supplying washing water to inner edge portion 120, the water level in water tank 20 reduces gradually.When water level is reduced near float 380, the buoyancy suffered by float 380 diminishes, and therefore the first trunnion 330, moves downwards with axle 341 for axis of rotation rotates because of its deadweight.

Fig. 6 (B) represents the state of the first trunnion 330 from Fig. 6 (A) with axle 341 for axis of rotation rotates, the front end of projection 333 and the state abutted above of block 354.In other words, represent that the gap be formed between opening 332 and opening 353 becomes maximum state.In addition, also the position of the first trunnion 330 of this state is called " second place " below.

As shown in Fig. 6 (B), time under the state that the first trunnion 330 is positioned at the second place from jet 311 injection water of nozzle 310, the water due to sprayed high speed departs from intake 331, therefore can not be supplied to the inside of the first trunnion 330.Be supplied to the inside (the first trunnion 330 around) of water tank 20 from the water of jet 311 injection, be stored in water tank 20.

Under the state of jet 311 injection water from nozzle 310, when the position of the first trunnion 330 switches to the second place from primary importance, stop supplying feedwater to inner edge portion 120, start to water tank 20 water filling.So, in flush toilet device FT, by making a part for trunnion 320 mobile in water tank 20 inside, thus the switching (hereinafter also referred to " stream switching ") of following state can be carried out, the state namely inner edge portion 120 (pelvic part 110) supplied water and the state of carrying out water filling to water tank 20.In other words, trunnion 320 plays a role as flow channel switching valve, and it switches the supply target of the water that the jet 311 from nozzle 310 sprays.Owing to not needing mechanism part such at the valve of the inside of water tank 20 configuration switching stream separately, water tank 20 therefore can be suppressed to maximize.

The part being positioned at the first trunnion 330 top side in float 380 is formed with inclined plane 381, and it is formed as erecting above the first trunnion 330 (with reference to Fig. 5 and Fig. 6).Inclined plane 381 is faces of the inclined relative to the first trunnion 330, and its width is slightly larger than the internal diameter of jet 311.As shown in Fig. 6 (B), after the first trunnion 330 moves to the second place, the water sprayed from jet 311 contacts with inclined plane 381, makes it flow to and changes upward.

Inclined plane 381 is subject to downward power due to the contact of water of spraying from jet 311.In other words, as making the flow direction of the water sprayed from jet 311 change caused reaction upward, inclined plane 381 is subject to downward power.Its result, the first trunnion 330 is applied with the revolving force in the direction from primary importance towards the second place.By this revolving force, the first trunnion 330 is maintained in the second place.

Thereafter, the water sprayed from jet 311 is also continued to be supplied in water tank 20.Although the water level in water tank 20 rises, float 380 is in the state be again submerged, and during jet 311 injection water, due to above-mentioned revolving force, the first trunnion 330 is still maintained in the second place.When water level in water tank 20 gradually rises and becomes full water water level, as already described, pilot valve 234 and main valve 233 are in pent state, stop from feed pipe 231 to jet pump units 300 for feedwater.Stop from jet 311 injection water, the first trunnion 330 utilizes the buoyancy suffered by float 380 and is back to primary importance, and flush toilet device FT is in holding state.

Referring again to Fig. 4, other formation of water tank 20 inside is described.As shown in Figure 4, the dividing plate 240 that the vertical portion 351 of encirclement trunnion 320 is such is configured with in the inside of water tank 20.Dividing plate 240 is formed as extending upward from diapire 211.Divided a part for the inner space of water tank 20 by the diapire 211 in the front side wall 213 of dividing plate 240, water tank 20, left side wall 214 and the first water tank portion 210, thus form little water tank 260.Little water tank 260 is its top containers to the inner open of water tank 20, is configured in front side in the first water tank portion 210 and one of left side jiao.The end portion in the vertical portion 351 of trunnion 320 is configured in the inner side of little water tank 260.In addition, intake 331 is configured in the outside of little water tank 260.

Opening and closing window 241 is provided with near bottom in dividing plate 240.Opening and closing window 241 is in the state be opened usually, and inside and outside (space than dividing plate 240 side rearward) of little water tank 260 is communicated with via opening and closing window 241.Therefore, under the state (holding state) cleaned of not carrying out pelvic part 110, the water level being stored in the water in water tank 20 is equal with the water level of the water be stored in little water tank 260.

Manual handle 236 can operate to both direction (general orientation, little direction).When manual handle 236 is operated to general orientation, opening and closing window 241 keeps the state be opened, and pilot valve 234 and main valve 233 are opened.The water be stored in little water tank 260 flows through opening and closing window 241 and flows out to the second water tank portion 220, arrives intake 331.Therefore, be stored in the water of water tank 20 inside, comprise the part be stored in little water tank 260 and be almost all drawn into the inside of trunnion 320 and be supplied to inner edge portion 120.

On the other hand, when manual handle 236 is operated to little direction, opening and closing window 241 is pent while, pilot valve 234 and main valve 233 are opened.Therefore, the water be stored in little water tank 260 be stored in the water of water tank 20 inside cannot flow through opening and closing window 241, and still remains in the inside of little water tank 260.Its result, the water yield being supplied to inner edge portion 120 as washing water becomes on a small quantity.

In addition, when pointing out " being stored in the water level of the water in water tank 20 " or " water level in water tank 20 " etc. in the following description, then the water level of little water tank 260 outside is represented.That is, by dividing plate 240 space dichotomous, the water level of the water be stored in the space being configured with intake 331 is represented.Do not consider the water level of the water be stored in little water tank 260 in the following description.

Fig. 7 medelling represents the formation of water tank 20 inside.As already described, feed pipe 231, main valve 233, pilot valve 234, little water tank 260 and jet pump units 300 is configured with in the inside of water tank 20.

Cleaning not by under the state (holding state) of carrying out at pelvic part 110, the water level of water tank 20 is in full water water level, and the first trunnion 330 is in primary importance.When operating manual handle 236 by the user of flush toilet device FT, as already described, main valve 233 is in the state be opened, from jet 311 injection water (the arrow A R1 of Fig. 7) of nozzle 310.The water being stored in water tank 20 inside is drawn into the inside of trunnion 320 (the arrow A R2 of Fig. 7), is supplied to inner edge portion 120 (the arrow A R3 of Fig. 7) as washing water.

At the end of water supply for inner edge portion 120, the position of the first trunnion 330 switches to the second place from primary importance, starts to water tank 20 water filling (the arrow A R4 of Fig. 7).Water level in water tank 20 rises gradually, by float 238, pilot valve 234 is closed the time marquis becoming full water water level.Meanwhile terminating to water tank 20 water filling by closing main valve 233, being back to holding state.

So, in the flush toilet device FT involved by present embodiment, owing to being utilize water jet pump effect to supply the formation of feedwater to lavatory pan body 10, therefore can make water tank 20 miniaturization.Its result, becomes the shorter time to the time needed for water tank 20 water filling, can realize in fact continuous print and clean.

Configuration in the concrete shape of trunnion 320 and water tank 20 is described further.As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 etc., the central axis of the first trunnion 330 tilts relative to fore-and-aft direction under overlooking, and is also inclined relative to horizontal under backsight.Therefore, in the limited space of water tank 20, the flow path length of the first trunnion 330 can be guaranteed as far as possible longly.In other words, the part of trunnion 320 middle and upper reaches side and the stream (than the stream of bend 352 by upstream side) of linearity can be guaranteed as far as possible longly.

Therefore, the water flowing to aux. venturi 350 along the inside of the first trunnion 330 before arrival bend 352 during, make the velocity flow profile homogenising in its flowing path section.Its result, when water arrives bend 352, can suppress to produce the current peeled off from flow path wall surface, or produce viscous flow vortex in the inside of bend 352.Can suppress, because the water jet pump performance caused by the shape of trunnion 320 reduces, to guarantee the current smoothly in the inside of trunnion 320.In addition, later the relation of the length of the first trunnion 330 and the velocity flow profile of current is described in detail.

In addition, observation Fig. 1 etc. are known, trunnion 320 is configured in water tank 20 as follows, makes the central axis in vertical portion 351 (the second line part) less relative to vertical angulation than the central axis of the first trunnion 330 (the first line part) relative to vertical angulation (in present embodiment being 0 degree).

By this formation, thus about length along the longitudinal direction, the length of the first trunnion 330 (the first line part) is longer than the length in vertical portion 351 (the second line part).Therefore, the major part in space limited in water tank 20 is effectively utilized as following space, namely for guarantee in order to produce water jet pump effect efficiently and the space of length of the first trunnion 330.That is, in the formation be integrally provided in by trunnion 320 in small-sized water tank 20, fully can also guarantee the length of the first trunnion 330 (the first line part) simultaneously.

Therefore, due to flow through velocity flow profile in the flowing path section of the water of the first trunnion 330 inside before arrival bend 352 during by full and uniformization, therefore can suppress to produce viscous flow vortex in the inside of trunnion 320, or the inner face of trunnion 320 is interfered with the high-velocity flow of local.Its result, owing to can suppress the resistance in trunnion 320 suffered by current, suppresses the efficiency of water jet pump effect to reduce, therefore, it is possible to make flow increase also guide water route 130 efficiently supply feedwater.

In addition, as already described, intake 331 is configured in the inside in the second water tank portion 220.Its result, the lower end of the first trunnion 330 and intake 331 are configured in be overlooked down on the position overlapping with the second water tank portion 220.In other words, in the lower side of intake 331, a part for the diapire of water tank 20 is in the shape extended downwards.

Owing to being this formation, therefore intake 331 can being configured in more below, guaranteeing the length of the first trunnion 330 (the first line part) more fully.In addition, although configure nozzle 310 in the space of ratio intake 331 in water tank 20 side on the lower, the inside in the second water tank portion 220 is utilized as space for this reason.In other words, form in following, need not in order to nozzle arrangement be shortened the first trunnion 330 (the first line part) in the below of intake 331.

In addition, in the present embodiment, although intake 331 to be configured in the inside in the second water tank portion 220, also intake 331 can be configured on the position higher than the upper end in the second water tank portion 220.Even if in this case, also wish intake 331 to be configured in overlook down on the position overlapping with the second water tank portion 220.

As shown in Fig. 6 (A), under the state that the first trunnion 330 is positioned at primary importance, intake 331 is formed as making its edge overall along horizontal plane.The opening that the intake 331 with the edge of this shape is formed when can be described as the end cutting off trunnion 320 along the horizontal plane.

In the intake 331 so formed, because the height of its upper end, edge is identical with the height of lower end, edge, therefore there is not the space be clipped between the two, although namely nozzle 310 cannot be configured and accumulate the space of useless water.Thus, the first trunnion 330 can be extended downwards to make the upper end of intake 331 mode approached near nozzle 310.Its result, although make water tank 20 miniaturization, can effectively be utilized as washing water (reducing the amount of useless water) by the major part of the water be stored in water tank 20, fully guarantee the time producing water jet pump effect, play high washing (-)off properties.

In addition, by as above forming intake 331, can prevent air from flowing into the inside of trunnion 320 from intake 331, and the water level of the water being stored in water tank 20 inside is reduced near intake 331.Because the water being stored in water tank 20 inside can not utilize with being wasted, water tank 20 miniaturization further therefore can be made.

Fig. 8 is the figure that medelling represents the velocity flow profile of the shape of trunnion 320 and the current of inside thereof.As already described, although the caliber of the first trunnion 330 roughly uniformity on the whole, not uniformity on strict, caliber (also can be called flow path cross sectional area) is formed as changing a little along stream.Specifically, upstream extremity and intake 331 place caliber the widest, more lead to downstream and be then formed as narrowing gradually.In addition, the change of this caliber is level and smooth, and namely the internal face of the first trunnion 330 is overall level and smooth, does not form the position that bight is such.

In addition, the vertical portion 351 about aux. venturi 350 is also the same.Not uniformity on the caliber in vertical portion 351 is strict, caliber is formed as changing a little along stream.Specifically, the narrowest with connecting portion (upstream extremity in vertical portion 351) place's caliber of bend 352, more lead to downstream and be then formed as broadening gradually.In addition, the change of this caliber is level and smooth, and namely the internal face of aux. venturi 350 is overall level and smooth, does not form the position that bight is such.In addition, even if it is overall to observe trunnion 320, inner wall surface thereof entirety also presents smoothly, does not form the position that bight is such.

Be all draw following situation large than reality in fig. 8, the situation that namely caliber of the first trunnion 330 is more then narrower towards downstream and the caliber in vertical portion 351 lead to the then wider situation in downstream.

Represent from jet 311 injection water in fig. 8, water flows to the state on water guide road 130 along the inside of trunnion 320.In addition, the velocity flow profile each flowing path section of 11 positions (being followed successively by position P1, P2 position, position P11 from upstream side) in trunnion 320 is represented with arrow medelling respectively.

As shown in Figure 8, close in the flowing path section at the P1 place, position of intake 331 in the first trunnion 330, due to the impact of the jet flow from jet 311, in the region (jet flow interior zone) near the central axis J (central axiss of the current sprayed) in this flowing path section, flow velocity becomes large.On the other hand, in the region away from central axis J (region close to the first trunnion 330 inwall: jet flow exterior zone) in this flowing path section, because the impact of the jet flow from jet 311 is less, therefore flow velocity is little compared with the region near central axis J.So, the state in a part of region (region near central axis J) that high-velocity flow is in flowing path section is partially in.

At jet flow outer edge (boundary member of jet flow interior zone and jet flow exterior zone), the vortex utilizing the speed difference inside and outside by jet flow to produce and make the fluid chemical field inside and outside jet flow.Thus, along with towards downstream, the flow of the internal flow of jet flow conveying is by by external fluid, suction is inner and increase (water jet pump effect) gradually.In other words, carry out the handing-over of momentum between the fluid key element in jet flow outer edge inside and outside jet flow, external fluid accepts momentum from internal flow and is accelerated and is drawn into jet flow inside, and internal flow externally fluid is paid momentum and slows down.That is, the velocity flow profile of the water in flowing path section homogenising gradually during water flows through the first trunnion 330 (stream of linearity).In fig. 8, at position P1 to position P5 respectively as shown by arrows, the flow velocity (peak flow rate (PFR)) of the water in the region near central axis J is more then less towards downstream with the difference close to the flow velocity (lowest speed) of the water in the region of the first trunnion 330 inwall.Its result, at position P6 as shown by arrows, the velocity flow profile arriving the water of bend 352 is in the state of roughly homogenising on the whole at flowing path section.

Can be understood by above explanation, when if the length of the first trunnion 330 (stream of linearity) is inadequate, then flows through the water of the first trunnion 330 (high-velocity flow is still the state in a part of region partially) when its velocity flow profile is also not homogenized and just arrive bend 352.Now, the high-velocity flow arriving the local of bend 352 is peeled off from the inwall of bend 352 inner circumferential side, and current form the viscous flow vortex be detained thus.During owing to producing viscous flow vortex in current, in viscous flow basin, energy is consumed in vain, and the discharge therefore supplied to lavatory pan body 10 reduces.Its result, exists and fails to discharge dirt from pelvic part 110 or fully do not clean the situation on pelvic part 110 surface.

In addition, due to when the length of the first trunnion 330 is inadequate, distance from jet 311 to bend 352 shortens, therefore from the current (high speed jet of local) of jet 311 injection and the inner faces contact (interfering with current) of bend 352, pressure near the downstream of the first trunnion 330 thus uprises, and pressure is along with close to bend 352 sharply rise (barometric gradient steepening).Thus, in a part for the first trunnion 330 inside, produce adverse current, and then in the first trunnion 330, form the viscous flow vortex of current delay.When producing viscous flow vortex in the first trunnion 330, while viscous flow basin energy is consumed in vain, by suppressed for the water jet pump effect of external fluid suction jet flow inside, the discharge supplied to lavatory pan body 10 reduces further.

So, in the present embodiment, as mentioned above, by fully guaranteeing the length of the first trunnion 330, thus suppressing the current in trunnion 320 form viscous flow vortex or interfere with trunnion 320 inner face, suppressing the discharge supplied to lavatory pan body 10 to reduce.

And the first trunnion 330 of present embodiment is described above, because the flow path cross sectional area of upstream side is larger than downstream, and the aperture area of intake 331 is also comparatively large, therefore the water of the large discharge from intake 331 can be absorbed.Its result, can produce water jet pump effect efficiently, the washing water of large discharge is supplied to lavatory pan body 10.

In addition, because the flow path cross sectional area in the first trunnion 330 downstream diminishes, therefore flow through velocity flow profile in the flowing path section of the water of the first trunnion 330 flowing through more short-range period and become uniformity.That is, arrive before bend 352 at water, the velocity flow profile in flowing path section is by homogenising effectively.Its result, suppresses the situation that the internal face producing vortex or the first trunnion 330 in the inside of the first trunnion 330 is interfered with the high-velocity flow of local further.

In addition, described above to the flow path cross sectional area of bend 352 from the first trunnion 330, consider the homogenising of velocity flow profile and be designed.Its result, the flow path cross sectional area of the upstream-side-end on the flowing path section sum water guide road 130 of the end of downstream side of bend 352 usually inconsistent (the latter is larger in the present embodiment).So, in the present embodiment, by imposing measure to the shape in vertical portion 351, and make both connect smoothly.Specifically, lead to downstream along with from upstream side, the flow path cross sectional area in vertical portion 351 is formed as change gradually (expansion).Internal face due to vertical portion 351 is overall level and smooth, does not form bight etc., therefore can not produce stripping or the viscous flow vortex of current in the inside in vertical portion 351.In fig. 8, at position P8 to position P11 respectively as shown by arrows, the inside in vertical portion 351 under the state that the velocity flow profile of water in flowing path section keeps roughly uniformity, is flow through.Its result, suppresses the efficiency of the water jet pump effect in trunnion 320 to reduce further.

Next, the various measures for realizing water tank 20 miniaturization are described.In flush toilet device FT, in trunnion 320, the part (the first trunnion 330) of intake 331 side is in the inside overlooking and be all configured in the state tilted under side-looking water tank 20.Specifically, under side-looking, this part is in towards the downward-sloping state of intake 331.In addition, under overlooking, this part is in the state tilted relative to fore-and-aft direction.

By being configured in water tank with this state by trunnion 320, thus water tank 20 can not being made to maximize, can guaranteeing to effectively produce water jet pump effect and required (substantially linear) flow path length.So, in flush toilet device FT, by imposing measure to the configuration of trunnion 320, thus the performance of not sacrificing jet pump units 300 just can make water tank miniaturization.

Fig. 9 is the top view of the position relationship representing intake 331 and lavatory pan body 10, overlooks lower medelling and represent the configuration of the trunnion 320 of water tank 20 inside.In addition, the group facility be made up of feed pipe 231, constant flow rate valve 232, main valve 233, pilot valve 234 and vacuum breaker 235 that in Fig. 9, label symbol VU represents.Below, as valve cell VU, they are described.

As shown in Figure 9, intake 331 is configured in and overlooks down on not overlapping with lavatory pan body 10 position.Although there is the diapire 221 in nozzle 310 (not shown in Fig. 9) and the second water tank portion 220 in the below of intake 331, more there is not lavatory pan body 10 in below at it.Therefore, the shape of the inferior portion of the nozzle in diapire 221 can not be limited in order to lavatory pan body 10, can become suitable shape to configure nozzle 310.Such as, in the present embodiment, a part for water tank 20 is extended downwards, be in 101 low positions above than lavatory pan body 10 to make diapire 221.So, the upper end position not increasing water tank 20 just can be guaranteed wider space and configure nozzle 310 between intake 331 and diapire 221.Its result, can suppress water tank 20 to maximize.In addition, by the lower end (intake 331) of the first trunnion 330 being configured in the inside in the second water tank portion 220, thus the flow path length of the first trunnion 330 is guaranteed.By this formation, the performance of jet pump units 300 is also made to improve.

As shown in Figure 9, the left and right directions of valve cell VU in water tank 20 is configured to across with the space of side (right side) opposition side (left side) and the space of aux. venturi 350 rear side that are configured with intake 331.In other words, effectively utilize by making trunnion 320 overlook have a down dip configuration and the space (space of aux. venturi 350 rear side) widely vacated, and be configured with valve cell VU on the position of not interfering with intake 331.Therefore, configure valve cell VU in water tank 20 while, water tank 20 can also be suppressed to maximize.

As illustrated with reference to Fig. 4, little water tank 260 is configured in front side in the first water tank portion 210 and one of left side jiao.In other words, be configured on the left and right directions in water tank 20 inside and be configured with in the part of side (right side) opposition side (left side) of intake 331.In addition, little water tank 260 and valve cell VU (main valve 233 etc.) arranged side by side along the longitudinal direction.Effectively utilize the space beyond the part in the space in water tank 20 shared by trunnion 320, and configure little water tank 260 and valve cell VU.Therefore, configure these parts in water tank while, water tank 20 can also be suppressed to maximize.

As illustrated with reference to Fig. 4, be configured with transmission mechanism 237 in the inside of water tank 20.Transmission mechanism 237 is configured in the top of the first trunnion 330 in water tank 20 inside.In other words, as the space for configuring transmission mechanism 237, effectively utilize the space formed by configuring the first trunnion 330 with the state be inclined relative to horizontal.Therefore, configure transmission mechanism 237 in water tank 20 while, the water tank 20 caused because of it can also be suppressed to maximize.

Also can above the first trunnion 330, replace transmission mechanism 237 or configure part or all of the equipment that forms above-mentioned valve cell VU together with transmission mechanism 237.In addition, valve cell VU is described above, comprises vacuum breaker 235.In addition, sometimes also electro-motor is comprised in transmission mechanism 237.That is, valve cell VU or transmission mechanism 237 situation that must be configured on the position that is not submerged in water tank 20 is more.To this, due to be formed in space above the first trunnion 330 be at least partially water tank 20 be in full water water level time the space that is not also submerged, even if therefore valve cell VU or transmission mechanism 237 are configured in this space, also can not be submerged and the bad phenomenon caused.

As shown in Figure 4, in the present embodiment, the diapire 211 (part than side on the front, the second water tank portion 220) in the first water tank portion 210 is in level.Also can replace aforesaid way, make diapire 211 (above) downward-sloping towards the second water tank portion.Now, in the process that the water level of the water being stored in water tank 20 inside reduces gradually, the water being present in the first inside, water tank portion 210 is smooth and easy and flow into the second water tank portion 220 effectively.Due to water rest on diapire 211 above on, prevent water surface WS to be reduced to than intake 331 below on the lower, air therefore can also be suppressed to flow into from intake 331 noise that trunnion 320 inside produces.

Next, the flush toilet device FTa involved by second embodiment of the invention is described.Figure 10 is the top view of the formation around the formation of the water tank 20a inside representing flush toilet device FTa and water tank 20a.In addition, Figure 11 is the front view of the formation representing water tank 20a inside.

Flush toilet device FTa is mainly different from flush toilet device FT in the configuration of the shape of water tank 20a, the valve cell VUa of water tank 20a inside etc., is then the formation roughly the same with flush toilet device FT about other formation.Below, the point different from flush toilet device FT is described.

Water tank 20a is compared with the water tank 20 in the first embodiment, and the size of its fore-and-aft direction shortens.As shown in Figure 10, the rear side end being configured in the water tank 20a on the rear side top part of rear side (above in 101a) of lavatory pan body 10a is positioned at front side compared with the rear side end of lavatory pan body 10a.Therefore, the overall dimensions of the fore-and-aft direction of flush toilet device FTa does not become large because of configuration water tank 20a.

Size (width) on the left and right directions of water tank 20a is larger than the width being configured with the part of water tank 20a in the 101a above of lavatory pan body 10a.Water tank 20a gives prominence to the left and right from lavatory pan body 10a, overlooks down and have not overlapping with lavatory pan body 10a part respectively about it.

The second water tank portion 220a that water tank 20a has the first water tank portion 210a and formed in the mode that the part of the diapire 211a making the first water tank portion 210a extends downwards.First water tank portion 210a and the second water tank portion 220a is the container of roughly cuboid, and both inner spaces are interconnected.

As shown in Figures 10 and 11, the second water tank portion 220a in present embodiment is only formed in lower side in water tank 20a and in the part in left side.Specifically, it is part not overlapping with lavatory pan body 10a under overlooking in the diapire 211a of the first water tank portion 210a, and is formed as only making the part of giving prominence to the left from lavatory pan body 10a extend downwards.

Nozzle 310a is configured in the inside of the second water tank portion 220a as above formed.In addition, upstream-side-end (lower end) the i.e. intake 331a of trunnion 320a is configured in the top of this nozzle 310a, and under overlooking, its entirety is configured on the position overlapping with the second water tank portion 220a.In other words, the second water tank portion 220a also can at least make its part be formed in overlook down on the position overlapping with the intake 331a of trunnion 320a.

In order to the effect below at intake 331a being formed to the second water tank portion 220a is described, first with reference to Figure 12, the phenomenon that cannot become level to the water surface entirety in water tank is described.Figure 12 is the ideograph observed water tank 20a inside from rear side and draw, and medelling represents the state producing water jet pump effect when not forming the second water tank portion 220a in water tank 20a.

In the present embodiment, because the size of the fore-and-aft direction of water tank 20a shortens, therefore trunnion 320a is configured under overlooking, make its central axis roughly along left and right directions.In addition, intake 331a is configured near the end in left side in water tank 20a inside.Because trunnion 320a and intake 331a thereof is so configured, although therefore the size along the longitudinal direction of water tank 20a diminishes, or the flow path length in order to efficiently produce water jet pump effect and required trunnion 320a can be guaranteed.

But, short in the size of the fore-and-aft direction of water tank 20a like this, and intake 331a be configured in left side (or right side) end near formation in, the water be present in water tank 20a away from the position of intake 331a cannot arrive intake 331a sometimes swimmingly.Such as, as shown in figure 12, when intake 331a is configured in the left end of water tank 20a, although the water be present on the left of water tank 20a arrives intake 331a swimmingly, the water be present on the right side of water tank 20a cannot arrive swimmingly.Its result, the water surface WS in water tank 20a cannot make its integral level, and the water surface WS of the side (left side) that intake 331a exists is slightly lower than the water surface WS of opposite side (right side).When there is this phenomenon, not yet complete although clean, the air in water tank 20a is inhaled in trunnion 320a, and the efficiency of water jet pump effect reduces.

On the other hand, in the present embodiment, by forming the second water tank portion 220a in the below of intake 331a, thus prevent the as above water surface WS entirety from cannot become the phenomenon (phenomenon of a part of step-down of water surface WS) of level.Figure 13 is the figure that medelling represents the current of the water tank 20a inside in present embodiment.

Be formed with the second water tank portion 220a in the below of intake 331a, owing to widely ensure that the space of this part, therefore water leads to intake 331a via various path.That is, near the right-hand end of water tank 20a, (from intake 331a position farthest) leads to the water of intake 331a is not only via path in the horizontal direction, such as, also can via the path (path that in Figure 13, label symbol FL represents) leading to intake 331a after near the diapire 221a first temporarily dropping to the second water tank portion 220a.Lead to the path of the water of intake 331a by the result widely guaranteed, the flowing of this water becomes smooth and easy, can suppress the phenomenon that the water level that intake 331a side occurs first reduces, and the water surface WS in water tank 20a is overall to be reduced with approximate horizontal state.Its result, the air in water tank 20a can not be inhaled into trunnion 320a, can play the high washing (-)off properties of water jet pump effect.

The diapire 221a of the second water tank portion 220a is configured in position not overlapping with lavatory pan body 10a under overlooking, namely lavatory pan body 10a side, side and be in the position of lower side compared with the 101a above of lavatory pan body 10a.Due to this formation, about the size of the fore-and-aft direction of flush toilet device FTa entirety and the size of short transverse, all do not become large because forming the second water tank portion 220a.In other words, do not change their size and form the second water tank portion 220a, can prevent the efficiency of water jet pump effect from reducing.

In the present embodiment, because the second water tank portion 220a is only formed in the left side of water tank 20a, the position of centre of gravity being therefore stored in the water entirety in water tank 20a is in the position (near the position being configured with intake 331a side on the left and right directions of water tank 20a) in close left side.In addition, as shown in figure 14, O shape circle 280a (elastomeric element) is above the bottom surface of water tank 20a and lavatory pan body 10a between 101a.That is, water tank 20a be arranged on across elastomeric element lavatory pan body 10a above on 101a.Therefore, water tank 20a can tilt centered by the position of O shape circle 280a, and be stored in the position of centre of gravity of the water entirety in water tank 20a as mentioned above near left side, result water tank 20a is in easily the state that (intake 331a side) to the left tilts.

Water tank 20a is when because its deadweight, (intake 331a side) tilts to the left, and the water be stored in water tank 20a becomes and easily arrives intake 331a swimmingly.Therefore, the phenomenon that the water level on the intake 331a side that trunnion 320a occurs can be suppressed further first to reduce.

In the present embodiment, by the left side making the second water tank portion 220a only be formed in water tank 20a, thus make the center of gravity deflection left side of stored water, easily make water tank 20a as surface thereof.The left side not making the second water tank portion 220a only be formed in water tank 20a, and be formed in the mode of the left and right sides, make water tank 20a be formed as left side (intake 331a side) the second water tank portion 220a Capacity Ratio on the right side of (with intake 331a opposition side) the second water tank portion 220a capacity greatly.

Referring again to Figure 10 and Figure 11, the configuration of the feed pipe 231a in water tank 20a etc. is described.

Being configured with pipe arrangement and the feed pipe 231a of the water for spraying from nozzle 310a from outside (running water pipe) supply in the inside of water tank 20a, making it extend upward from the diapire 211a of water tank 20a.In other words, to be configured with feed pipe 231a through the mode of the water being stored in water tank 20a inside in the vertical direction.

Feed pipe 231a is configured on the left and right directions in water tank 20a inside and is configured with in the part of side (left side) opposition side (right side) of intake 331a.If when there is obstruction near intake 331a, the current collected to intake 331a significantly can be hindered because of obstruction, but in the present embodiment, owing to being configured on the position away from intake 331a by feed pipe 231a, therefore in water tank 20a, feed pipe 231a can not hinder the current leading to intake 331a.Its result, can suppress the phenomenon that the water level that intake 331a side occurs first reduces further.

Be configured with in the inside of water tank 20a: main valve 233a (open and close valve), subtend nozzle 310 switches for the opening and closing of the stream of feedwater; And float 238a, be connected to main valve 233a.In the present embodiment, float 238a be configured in water tank 20a inside left and right directions on be configured with in the part of side (left side) opposition side (right side) of intake 331a.Owing to being configured on the position away from intake 331a by float 238a, therefore float 238a can not hinder the current leading to intake 331a.Its result, can suppress the phenomenon that the water level that intake 331a side occurs first reduces further.

Little water tank 260a is configured with in the inside of water tank 20a, variable for the water yield making the entrance of guide water route 130a in stored water supply.In the present embodiment, little water tank 260a be configured in water tank 20a inside left and right directions near be configured with on the position of side (left side) opposition side (right side) of intake 331a.Owing to being configured on above-mentioned position by little water tank 260a, therefore little water tank 260a can not hinder the current leading to intake 331a.Its result, can suppress the phenomenon that the water level that intake 331a side occurs first reduces further.

Flush toilet device FTa possesses stream switching mechanism 390a in the end of downstream side (between intake 331a and nozzle 310a) of trunnion 320a.Stream switching mechanism 390a has float 391a.Stream switching mechanism 390a is configured to the action according to the float 391a corresponding to the water level of water tank 20a, and the water sprayed the jet 311a from nozzle 310a leads to the state (state to water tank 20a water filling) that the state of trunnion 320a inside and this water supplies in water tank 20a and switches.

Stream switching mechanism 390a is configured to when supplying water to pelvic part 110a (when producing water jet pump effect), water level in water tank 20a is reduced to the time marquis of the switching water level of regulation, the supply target of the water sprayed from jet 311a is switched in water tank 20a from the inside of trunnion 320a.That is, in the water level be configured in water tank 20a is reduced to and switches water level, water jet pump effect is stopped, starting to water tank 20a water filling.In addition, above-mentioned switching water level is set in the position higher than the upper end position of the second water tank portion 220a.

If by switching water level settings when the position lower than the upper end position of the second water tank portion 220a, the then part on intake 331a side local step-down compared with other parts in water surface WS, air flows in trunnion 320a from intake 331a thus, produces noise sometimes.

In the inside of the second narrower water tank portion 220a, there is the tendency of the flow velocity step-down of water in the near wall around encirclement intake 331a, water surface WS entirety is difficult to similarly reduce.Can think the reduction of the water surface WS producing above-mentioned local therefrom.

So, in the present embodiment, by above-mentioned switching water level settings in the position higher than the upper end of the second water tank portion 220a.That is, when being configured to before becoming the state that water exists only in the second narrower water tank portion 220a, water jet pump effect being stopped, starting to water tank 20a water filling.Therefore, the reduction of the water surface WS of local as described above can not be produced, can prevent from producing noise in water surface WS.

In addition, in the present embodiment, although be configured to utilize stream switching mechanism 390a as described above to carry out stream switching, also can be configured to replace it and carry out stream switching by the formation the same with the flush toilet device FT in the first embodiment.

In addition, in the present embodiment, as shown in figure 11, the position roughly equal with the upper end of the second water tank portion 220a is configured with intake 331a.Also can replace this mode, in the position (inside of second water tank portion 220a) lower than the upper end of the second water tank portion 220a, upper configuration intake 331a, will switch water level settings in the position lower than the upper end of the second water tank portion 220a in addition.In this formation, because water jet pump effect produces to becoming state that water exists only in the second narrower water tank portion 220a, therefore tail off further without water supply volume.

Above, with reference to concrete example, embodiments of the present invention are illustrated.But the present invention is not limited to above-mentioned concrete example.As long as that is, those skilled in the art in above-mentioned concrete example suitably in addition the concrete example of technology alteration possess feature of the present invention, just also belong to scope of the present invention.Such as, each key element of possessing of aforementioned each concrete example and configuration, material, condition, shape, size etc. are not limited to illustrative situation and can suitably change.In addition, combine in the scope that each key element that aforementioned each embodiment possesses can allow in technology, as long as comprise feature of the present invention after their combinations, just also belong to scope of the present invention.

Claims (5)

1. a flush toilet device, is the flush toilet device utilizing washing water dirt to be expelled to gutter, it is characterized in that possessing:

Lavatory pan body, has the pelvic part catching dirt, is formed with the water guide road for the described pelvic part that led by the water supplied as washing water in inside;

Water tank, at internal storage water, it is configured in the rear side top of described lavatory pan body, this water can be supplied to the entrance on described water guide road;

And jet pump units, be configured in the inside of described water tank,

Described jet pump units has:

Trunnion, the entrance on its described water guide road for one end is connected to and be formed with the pipe of intake at the other end, described intake is configured to the bottom being arranged in described water tank inside;

And nozzle, by from described intake to the internal spray of described trunnion water at a high speed, thus bring out water jet pump effect,

Described trunnion has:

First line part, is formed as extending with linearity from described intake towards oblique upper;

The bend formed deviously is the part than described first line part downstream;

And second line part, be the part than described bend downstream, be formed as extending with linearity towards the entrance on the described water guide road being positioned at lower side,

Its entirety becomes the pipe of reverse U shape under side-looking,

It is configured under side-looking, make the central axis of described second line part less relative to vertical angulation than the central axis of described first line part relative to vertical angulation,

The flow path cross sectional area of described first line part is formed as diminishing gradually along with leading to downstream from upstream side on the whole.

2. flush toilet device according to claim 1, is characterized in that, the second water tank portion that described water tank has the first water tank portion and formed in the mode that a part for the diapire making described first water tank portion extends downwards,

Described intake is configured in be overlooked down on the position overlapping with described second water tank portion.

3. flush toilet device according to claim 1 and 2, is characterized in that, it is overall level and smooth that described second line part is formed as inner wall surface thereof, and lead to downstream along with from upstream side, and its flow path cross sectional area gradually changes.

4. flush toilet device according to claim 2, is characterized in that, described first line part is configured under overlooking, and is in the state that its central axis is tilted relative to the fore-and-aft direction of described water tank.

5. flush toilet device according to claim 2, is characterized in that, also possesses:

Lever, is arranged on the lateral surface of described water tank;

Valve cell, is configured in the inside of described water tank, switches for the opening and closing of nozzle described in subtend for the stream of feedwater;

And transmission mechanism, for the action of described lever is passed to described valve cell,

In described valve cell and described transmission mechanism, at least one is configured in the top of the first line part described in described water tank inner space.