JPH0119014B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a device for capturing and transporting odors in a toilet, and more specifically, a toilet device equipped with a toilet flushing water tank with a built-in overflow pipe. The present invention relates to a device for capturing and transporting odors in a toilet.

(Prior art and its problems) In general, a method for removing odors in the toilet is to install a ventilation fan to exhaust the odor-laden air from inside the toilet to the outdoors, while also bringing in fresh air from outside. It is being done.

However, such ventilation fans are usually located above the user (in the urinal position), and the air intake is located below, for example in the gap between the bottom edge of a door and the floor. It is located in This creates an upward airflow from the air intake to the ventilation fan;
During defecation, the odor of excrement present in the toilet bowl and the odor of gas discharged at the same time as excretion are taken with them and emanated out of the toilet bowl. Therefore, the user who is using the toilet feels the odor even more strongly than when the ventilation fan is not operated, and the use of the ventilation fan has the opposite effect.

One possible way to eliminate the above-mentioned odors is to flush the excrement with water at the same time as it is excreted, so that the ventilation fan can only excrete the odor of gas or the like remaining in the toilet. However, washing with water every time you defecate in this way has the disadvantage of using a large amount of water, and the water discharge operating means such as the operating handle is located in a position that is difficult to operate from the normal position during defecation. However, there is a drawback that an unreasonable posture is required for the operation.

However, the odor of excrement and the odor of the gas discharged at the same time are stuck in and around the toilet bowl, and it is thought that these can be sufficiently removed by local suction; After flushing the excrement with water, almost no odor remains in the toilet, and subsequent odor removal is considered to be almost unnecessary.
However, according to the above-mentioned method using a ventilation fan, the entire air in the toilet must be ventilated to remove odors, so the cost of the ventilation fan and the waste of electrical energy due to the need for more ventilation capacity than necessary are unavoidable. Even after flushing, the odor remains in the toilet, requiring continuous ventilation, which has the disadvantage of consuming a large amount of electrical energy.

In addition, the overflow pipe installed in the water tank is not only for draining water from the auxiliary water pipe into the toilet bowl in siphon-type or siphon jet-type toilet devices, but also for the purpose of overflowing the water tank in the event of a ball tap malfunction. This is to prevent water from overflowing. This is also because the toilet user leaves the toilet immediately after operating the handle, so the water level reaches the specified level and it is not possible to confirm that the water from the ball tap has stopped, and the reason why the ball tap breaks down is when there is no one in the toilet. This is because it is likely to occur from time to time. Therefore, even if a breakdown occurs, overflow pipes are installed to prevent water from overflowing from the water tank. However, in such facilities, the purpose of the overflow pipe must not be obstructed by installing an odor transport device, and the suction mechanism such as a fan for transporting odors must be turned off after using the toilet. However, since we live on the assumption that water level adjustment mechanisms such as ball taps are functioning properly, we may sometimes forget to turn off the water, and even if an automatic stop mechanism is installed, it will not work properly. It is also possible that the stop mechanism is malfunctioning. Therefore, it is essential that the odor trapping and conveying device be configured so that even in such a situation, the water in the water tank will flow down to the toilet side, and the suction mechanism will not be affected in any way.

Furthermore, the water level in the water tank is not necessarily maintained at a specified level. If you try to install a device that assumes that the water level in the water tank is at the specified water level and that it will not function unless the water level is maintained, then the tank to be installed will not meet the specified water level. If the water level is not high enough, you must bend the arm of the ball tap upward or downward to return it to the specified water level. However, bending the arm rod is not an easy task even with specialized knowledge. In other words, the arm bar may be compressed and broken. The more years have passed since the equipment was installed, the more likely it is. This is because the metal arm rod is in contact with tap water that may still contain residual chlorine from disinfection, and the humidity inside the tank is extremely high, making it the perfect environment for metal to deteriorate over time. Because it's the environment.
Therefore, the installation of the odor trapping and conveying device is recommended in an existing water tank that exhibits an upward water level change due to wear of the ball tap gasket, or a downward water level change when the arm rod is intentionally bent downward from the standpoint of water conservation. If the water level is within a common sense range, it is desirable that the water level can be adjusted to the current water level without adjusting the water level by bending the arm rod.

(Means for Solving the Problems) In view of the above, an object of the present invention is to prevent the user from feeling any odor while using the stool, to eliminate the need for washing with water during the use of the toilet, and to minimize the The purpose of this is to provide a toilet odor trapping and conveying device that can remove odors in the toilet by adjusting the ventilation amount and ventilation time, and does not cause any problems with the operation of existing equipment. An overflow pipe connected to the toilet flushing water tank is installed inside the toilet flushing water tank.
This overflow pipe is provided with a pipe, and the toilet odor trapping and conveying device is configured to suck mainly the odor inside the toilet bowl from the outflow opening through the pipe, and the pipe is provided with a pipe. An air intake valve mechanism is provided with a valve body that opens and closes, and the air intake valve mechanism is configured such that the valve body for the pipe line is located at least at a level of the wash water inside the water tank. It is in a closed state when the water level is at the upper limit regulated by a water level adjustment mechanism provided in the water tank, and is in an open state when wash water flows out from the outflow opening via the water discharge valve mechanism provided inside the water tank or the overflow pipe. This is achieved by configuring the pipe to allow air to flow into the pipe.

(Embodiment) Next, a first embodiment of the present invention will be described with reference to FIGS. 1 to 5.

In the seated corner low tank type toilet device shown in FIG.
This is an operation handle that is operated to discharge the internal flushing water into the toilet bowl 1, and the flushing pipe 3 communicates with an outflow opening (not shown) appropriately provided on the inner and lower surface of the rim portion 1a of the toilet bowl 1. .

Next, the main structure inside the water tank 2 will be explained according to FIG. 2. 5 is a water discharge valve mechanism to the washing pipe 3;
The valve element 5a of the water discharge valve mechanism 5 is connected via a chain 7 to a lever 6 that is linked to the operating handle 4, and is based on the rotation of the operating handle 4. The water tank 1 is opened by being pulled up to the top, and the water inside the water tank 1 is discharged into the toilet bowl 1 from the outflow opening through the flush pipe 3. Reference numeral 8 denotes an overflow pipe connected to the water discharge valve mechanism 5, which communicates with the cleaning pipe 3 when the valve body 5a is closed, and whose upper end is set at a predetermined height above the upper limit water level WLo of the cleaning water regulated by the ball tap 9. It is open at the top.

Reference numeral 10 denotes a concentric cylindrical cover body that covers the upper end of the overflow pipe 8, and includes a disk-shaped upper plate 11, and an inner cylinder 12 and an outer cylinder 13 that are integrally formed in a hanging manner on the lower surface of this upper plate 11.
It is equipped with The inner cylinder 12 has an inward protrusion 12a on its inner peripheral surface, and the cover body 10 has an inner cylinder 12.
is fitted onto the upper end of the overflow pipe 8 and is fixed to the overflow pipe 8 with the inward protrusion 12a locked onto the upper end surface thereof. In this state, the lower end of the inner cylinder 12 is located below the upper limit water level WLo. The inner cylinder 12 also has a plurality of openings 14 to 14 on its side surface, the lower ends of which are substantially flush with the upper end surface of the overflow pipe 8, and the lower ends of these openings 14 to 14 are approximately equal to the upper limit water level WLo. An annular water return portion 12b that projects outward in the horizontal direction is provided at an intermediate height position. On the other hand, the lower end of the outer cylinder 13 is at the upper limit water level.
It is located above WLo, and an annular water return portion 13b that projects horizontally inward is formed at the lower end. Reference numeral 15 denotes a concentric cylindrical lifting tube that is screwed onto the inner circumferential surface of the outer tube 13 and forms an outer wall together with the outer tube 13, and in FIG. 2, its lower end is slightly (approximately 2.5 mm) below the upper limit water level WLo. This position is determined by the upper limit water level WLo and fluctuations in the water level due to vibrations, etc., or by the rise in the water level inside the cover body 1 due to static pressure during odor capture and transportation, which will be explained in detail later. In consideration of the accompanying drop in water level outside the cover body 10, etc., the cover body 10 is set at a position where air does not flow in from the lower surface of the cover body 10. 16, its upper end is the upper plate 1
1, and its lower end extends into the overflow pipe 8 to an appropriate depth (approximately 30 mm). Reference numeral 17 is a conduit whose one end is screwed into the upper part of the opening 11a, and whose other end is connected to the outside of the toilet from a bellows pipe or the like (not shown) through a suction mechanism, and an air vent is provided at the open end of a branch pipe 18 that branches from the middle of the conduit. A valve entry mechanism 19 is provided. 2
Reference numeral 0 designates an auxiliary water pipe connected to the auxiliary water supply pipe 9a of the ball tap 9, which is located within the overflow pipe 8 like the suction pipe 16, and its lower end extends below the lower end of the suction pipe 16. Further, connection holes of the auxiliary water pipe 20 are provided at two locations in the diametrical direction, and a blind screw 20a (see FIG. 3) is screwed into the connection hole on the side that is not used. (For models without auxiliary water pipes, blind screws 20a are screwed into each connection hole.) Next, to explain the configuration of the air intake valve mechanism 19 in more detail, 21 connects the lower end to the upper plate 11. A support rod is screwed into one of screw holes 22, 22 provided diametrically opposite each other and tightened and fixed with nuts 23, 23. A lever 24 is attached to the upper end of this support rod 21 via a pin 25. Rotatably supported. (A blind screw 26 is screwed into the other screw hole 22.) One arm 24a of the lever 24
As shown in FIG. 3, it has a plate shape that is flat in the vertical direction, and has a plurality of holes 27 to 27 at equal intervals in the longitudinal direction. 28 is a small diameter hole 29
This connecting piece 28 has a bowl-shaped water receiving tray 30 fixed to one end in the center.
It has two holes 28a of the same shape as each hole 27 of the arm 24a, spaced approximately half the distance between the holes 27 of the arm 24a. 27, and is fixed by screws 31 and nuts 32. The water receiving tray 30 is disposed appropriately below the water supply port 9b into the water tank of the ball tap 9, and is adapted to receive water flow therefrom. A support arm 36 is connected to the end of one arm 24b of the lever 24 and rotatably supports a valve shaft 34 connected to the lever 6 of the operating handle 4 via a chain 33 via a pin 35. . This support arm 36 has an elongated hole 38 into which a screw rod 37 (see FIG. 4) fixed to the end of the arm 24b is inserted, and is formed above and below this elongated hole 38, so that the arm 24b can be slid in the longitudinal direction. The supporting arm 36 can be opened by screwing the nut 40 onto the threaded rod 37 and tightening it with the valve shaft 34 aligned with the center of the opening at the end of the branch pipe 18. It is fixed to arm 24b. 41 is a disc-shaped weight screwed and fixed to the valve shaft 34;
The lower surface has a stepped portion 41a. Reference numeral 42 denotes a circular plate-shaped valve body made of rubber or the like, which is inserted into the valve shaft 34 and is tightened and fixed via a washer 44 by a nut 43 with its center abutting the lower surface of the stepped portion 41a of the weight 41. There is. Reference numeral 45 denotes a box body which is screwed onto the outer periphery of the open end of the branch pipe 8 through a screw hole 46, and is formed to surround the weight 41, the valve body 42 and the support arm 36, and has a valve shaft on the top surface. 34, and a vertical groove 48 on the side surface through which the end of the support arm 36 is inserted, and an annular projection 49 having a slightly smaller diameter than the valve body 42 is provided around the screw hole 46. .

Next, the functions and effects of the first embodiment will be explained.

First, before the operation handle 4 is operated, that is, before the water discharge operation, the water level is at the upper limit water level WLo,
The lever 24 is urged counterclockwise in the figure by the weight 41. Therefore, the valve body 42 has an annular projection 49
The branch pipe 18 is brought into contact with the branch pipe 18 and deformed into a concave shape as shown in FIG. 5, and the open end of the branch pipe 18 is completely closed. Further, the lower end of the elevating cylinder 15 of the cover body 10 is submerged in water, and the inside of the cover body 10 forms a chamber that is blocked from air inflow from the outside. Therefore, a series of pipes is formed between the outflow opening of the toilet bowl 1 and the suction mechanism, with no flow of external air in the middle.
In this state, when the user defecates while operating the suction mechanism, the odor from the excrement does not emanate to the outside of the toilet bowl 1, but is sucked through the outflow opening and guided out of the toilet. can relieve themselves without experiencing any odor.

Next, when the user operates the operating handle 4 after using the toilet to activate the water discharge valve mechanism 5, the water in the water tank 2 flows into the cleaning pipe 3 at once, blocking it, and causing the water to flow out from the overflow pipe 8. In the conduit leading to the suction mechanism via the cover body 10, the water level reaches the cover body 10 as described below.
Since there is no air inflow section until it falls below the lower end of , the amount of air sucked by the suction mechanism becomes insufficient and a large load is applied to the suction mechanism, causing a failure. Furthermore, the outflow of water through the flush pipe 3 to the toilet bowl 1 side is obstructed, and knocking may occur in the water discharge valve 5. However, in this embodiment, the valve shaft 34 of the air intake valve mechanism 19 is connected to the arm portion 6 of the operating handle 4 through the chain 33, and is pulled upward at the same time as the operating handle 4 is operated.
Since the open end of 8 is opened to allow air to be taken in, the suction mechanism is not affected by negative pressure, water, etc., and does not cause abnormal noise within the pipe. Immediately after the operation handle 4 is operated, water discharged from the water supply port 9b of the ball tap 9 as the water level falls is received by the water receiving tray 30. Such released water exerts downward pressure on the water receiving tray 30 and simultaneously fills the inside of the water receiving tray 30, and although it gradually falls downward from the hole 29 at the bottom, it always remains within the water receiving tray 30 almost always. In order to keep it full, the weight of the water receiving tray 30 increases and the lever 24 is rotated clockwise in the figure. Therefore, the open end of the branch pipe 18 is always maintained in an open state even after the operation handle is restored, and when the water level reaches the original upper limit water level WLo and the water supply from the water supply port 9b is stopped, the water in the water receiving tray 30 is kept open. All of the accumulated water falls downward through the hole 29, which reduces its weight, and the lever 24 is automatically rotated counterclockwise by the weight 41, and the open end of the branch pipe 18 is closed again. Return to Here, in the process of lowering the water level as described above, the water level is lower than the elevation tube 1 of the cover body 10.
When descending below the lower end of cylinder 5, the external air
Opening 14 of inner cylinder 12 from between the lower end of 5 and the water surface
The water can flow into the overflow pipe 8 through the water pipe 14, and the water can flow into the washing pipe 3 even more easily, so that the ability to wash excrement with water is not reduced at all, and auxiliary water can be supplied from the auxiliary water pipe 20 without difficulty. It can be carried out.

In addition, as mentioned above, when the water level falls below the lower end of the lifting tube 15 of the cover body 10, the cover body 1
Since it is possible for air to flow in from the bottom of the 0, it is conceivable to bring the lower end of the elevator tube 15 as close to the water surface as possible, but when the suction mechanism is activated, air may flow from the bottom surface of the cover body 10 due to fluctuations in the water surface. Considering that inflow must be prevented, it is necessary to set the water at a considerable depth, and it takes a certain amount of time for the water level to reach the lower end of the elevator tube 15 or below.

Furthermore, if the water supply cannot be stopped due to a malfunction of the ball tap 9, etc., the water level will be lowered to the overflow level WL.
1 and reaches the openings 14 to 14 of the inner cylinder 12,
Water is then discharged into the toilet bowl 1 through an overflow pipe 8. In addition, if the suction mechanism is activated while water is being drained from the overflow pipe 8 to the toilet bowl 1, the water will flow through the cover body 10 to the suction mechanism for the same reason as stated regarding the water discharge operation above. Since there is no air inlet in the pipe, a large negative pressure is applied to the suction mechanism, causing a malfunction.Furthermore, the water trying to flow out and the air flow toward the suction mechanism conflict with each other, causing damage to the suction mechanism side. Air mixed with water is sucked in, causing an electrical failure in the suction mechanism.
In addition, in the pipeline from the overflow pipe 8 to the toilet bowl 1, the toilet bowl of the toilet bowl 1, the hollow part of the rim part 1a, the cleaning pipe 3, and the overflow pipe 8 act as resonance parts, producing a gurgling noise that is more than expected. let However, in such a state, water is always flowing out from the water supply port 9a of the ball tap 9, and the water receiving tray 30 receives this flowing water, so the lever 24 is tilted toward the water receiving tray 30 side and the branch pipe 18 is closed. Since the opening end is open,
This allows air to flow in, and the overflow pipe 8 can perform its original function without any of the phenomena described above.

Further, since the conduit 17 is screwed and connected to the opening 11a of the upper plate 11 of the cover body 10, it can be rotated in any direction, and the support rod 2 of the lever 24 can be adjusted.
Since the lever 24 can be selectively attached to either of the holes 22, 22, the lever 24 can be attached to the water supply port 9b.
When oriented in this direction, these mechanisms can be placed in a position that does not interfere with the operation of other existing mechanisms, such as the ball tap 9. In addition, water tray 30
can be freely adjusted to the position directly below the water supply port 9b by fixing the connecting piece 28 to the arm 24a of the lever 24 at an arbitrary position, and since the arm 24a has a flat plate shape, it can be bent by hand, for example. By doing so, the water supply port 9b of the water receiving tray 30
The height can also be set freely. In addition, piping to the conduit 17 can be carried out using one of the two holes for water supply pipes provided in the water tank 2, which is not used, which is very convenient.

Further, in the above configuration, the elevating tube 15 is the outer tube 1.
3, the suction mechanism can be raised and lowered by screwing into the toilet, but it may also be configured to simply lock with a screw.The above-mentioned suction mechanism is not limited to manual operation, but can also be operated by opening and closing the toilet door, or by opening and closing the toilet (particularly the seat type). ) may be provided with a pressure sensitive switch so that it is activated only when the user is seated. Furthermore, the above-mentioned suction mechanism is connected to an appropriate deodorizing device, such as an activated carbon type, platinum type, ion type, or jet type deodorizing device, to release the deodorized air into the toilet interior, and a heater that heats the deodorized air. It is also possible to install a heater and use it for heating the toilet.

In addition, in the embodiments described above, air is allowed to flow in not only from the air intake valve mechanism 19 but also from the lower end of the cover body 10 when water is discharged, that is, when the water level drops. It is also possible to perform all of this only through the air intake valve mechanism 19, and an example of such a device will be described below as a second embodiment.

A second embodiment of the present invention will be described below with reference to FIGS. 6 and 7.

In FIG. 6, reference numeral 110 denotes a cover body forming a rectangular conduit that has downwardly extending pipe portions 113, 113 on both lower surfaces and a cylindrical portion 112 fitted to the overflow pipe 8 on the central lower surface. As shown in FIG. 7, its inner width is set larger than the outer diameter of the overflow pipe 8, and the inner periphery of the upper end of the cylindrical portion 112 has an inner surface that is engaged with the upper end surface of the overflow pipe 8. A protrusion 112a is formed. Reference numeral 117 is a conduit whose one end is screwed into an opening 114 formed in the center of the upper part of the cover body 110, and the other end is connected to a bellows pipe (not shown) or the like, and further, via a suction mechanism, to the outside of the toilet or to an appropriate deodorizing device. . 111, 111 are extension pipe parts 1 whose upper ends correspond
13, 113 with the bag nut 11 protruding inside.
5,115, each water guide pipe 111,1 is fixed to the lower end of the extension pipe section 113,113.
J-shaped tube portions 111a, 111a whose tips extend vertically upward are formed at the lower end portions of the tubes 11. Further, the tip of each J-shaped pipe portion 111a opens upward below the upper limit water level WLo regulated by the ball tap. In addition, each water pipe 11
1 has a plurality of rectangular openings 116, 116 inside the corresponding extension pipe portion 113.
are provided for each. 120 is an auxiliary water pipe. 118 and 119 are floats 12 that slide up and down inside the water pipe 111 as the water level changes.
1, 122, a first air intake valve mechanism and a second air intake valve mechanism that open and close openings 123a, 123b formed in a part of the pipe line 110, respectively;
The configurations of these mechanisms will be explained below.

In the first air intake valve mechanism 118, 134 is a valve shaft having a weight 141 having a stepped portion 141a and a valve body 142 tightened and fixed to the upper end via a washer 144 with nuts 143, 143, and the lower end thereof is a float. Sliding pipe 1 attached to the top of 121
24. 125 is a spring cylinder formed surrounding the lower part of the valve shaft 134;
Reference numeral 6 denotes a spring inserted into the sliding tube 124 , the lower end of which comes into contact with the upper surface of the float 121 , and the upper end inserted into the spring tube 125 . 12
A cylindrical valve seat 7 is screwed into the opening 123a, and its lower end is rounded. Here, the mounting position of the valve body 142 with respect to the valve shaft 134 is the upper limit water level at which the water level of the cleaning water is regulated by the ball tap.
When the pressure reaches WLo or above, the float 121 pushes up the valve shaft 134 via the spring 126, and the valve body 142 is pressed against the lower surface of the valve seat 127 as shown in the figure, thereby closing the opening 123a. In addition, a float 1 is provided inside the corresponding water pipe 111.
An annular inward projection 111b regulating the lowering limit of 21
is formed.

In the second air intake valve mechanism 119, similarly to the valve shaft 134 of the first air intake valve mechanism 118, 184 connects a weight 191 with a stepped portion 191a and a valve body 192 to a washer 194 using nuts 193, 193. The lower end of the valve shaft is tightly fixed to the upper end of the corresponding water pipe 111 through a hole 128a provided in the center of the lid 128 formed at the upper end of the corresponding water pipe 111, and the float 122
is connected to. Reference numeral 176 is a spring inserted into the valve shaft 184 that connects the lower surface of the lid part 128 and the float 1.
It is interposed between the end portion of 22. A cylindrical valve seat 177 is screwed into the opening 123b and has a rounded upper end. Here, the valve body 19
The mounting position for the valve stem 184 in No. 2 is such that the water level is at the overflow level.
Slightly below (5 to 10 mm) below WL1, the valve stem 184 is connected to the spring 17 along with the float 122.
6, the valve body 192 is pressed against the upper surface of the valve seat 177 as shown in the figure, thereby closing the opening 123b.

Next, the functions and effects of the second embodiment will be explained.

First, before the water discharge operation, the water level is the upper limit water level.
The openings 123a and 123b are closed by the first air intake valve mechanism 118 and the second air intake valve mechanism 119, respectively. In addition, wash water flows into each extension pipe section 113 through the opening 116 of the corresponding water conduit pipe 111, and when the user uses the suction mechanism in this state to defecate, the excrement is removed. The odor is sucked out from the outflow opening of the toilet bowl 1 as in the first embodiment, and the user can relieve himself without feeling any odor.

Next, when the user performs a water spraying operation, the first air intake valve mechanism 118 immediately opens the opening 123a by lowering the float 121, allowing air to flow into the cover body 110. Therefore, the suction mechanism is not subjected to any sudden load, the flushing water flows smoothly into the toilet bowl 1, and the water discharge valve mechanism does not cause any knocking.

On the other hand, in the case where the water supply cannot be stopped due to a failure of the ball tap, when the water level reaches the overflow level WL1, the first air intake valve mechanism 18 opens the opening 123a.
is in the closed state, but the second air intake valve mechanism 11
9, as the float 122 rises, the valve shaft 184 is pushed upward against the spring 176;
The valve body 192 is separated from the valve seat 177 and opens into the opening 123b.
is in an open state, allowing air to flow into the cover body 110. Therefore, as in the first embodiment, the cleaning water can flow into the overflow pipe 8 without being affected by the suction mechanism, and the suction mechanism is not subjected to any sudden load. In addition, the cover body 11
Since the internal width L of 0 is larger than the diameter of the overflow pipe 8, the cleaning water flows as shown in FIG.
Water flows into the overflow pipe 8 from its entire circumference, so its function is not hindered in any way.

Here, in the water discharging process, the cleaning water remains in each J-shaped pipe portion 111a after water discharging to form a water seal, so air inflow is caused by the first air intake valve mechanism 118.
The air can flow into the cover body 110 only when the second air intake valve mechanism 119 is opened.

In addition, since the second air intake valve mechanism 119 opens when the water level reaches 5 to 10 mm below the overflow level WL1, the suction mechanism when the water discharge valve mechanism is operated when the water level reaches near the overflow level WL1 It also functions as a safety valve to eliminate the load on the

Note that the auxiliary water pipes 20, 1 in the above embodiments
20 is installed in siphon type or siphon jet type toilet devices, and we will explain below based on reality what kind of harm will occur if these auxiliary water pipes are not available.

First of all, after using the toilet, wash away the dirt, paper, etc. that you dropped into the toilet bowl before coming out of the toilet.
When you operate the tank lever, the water in the water tank flows out into the toilet bowl at once. Then, the water flowing out of the toilet bowl creates a siphon effect, transporting the filth, paper, etc. inside the toilet bowl to the sewer system without leaving any behind. However, since the water is drained using a siphon phenomenon, there is not even any water left in the toilet bowl, so if this continues, the odor from the sewer side will flow back into the toilet, which is a problem. You will notice that water is flowing out from the outflow opening, albeit little by little.
This water ultimately creates a water seal inside the toilet bowl that shuts out odors from the sewer.

However, if you think about it, there is no way that the water in the water tank that was flowing so forcefully earlier is already left in the water tank, and since the water discharge valve in the water tank is already closed, there is no way that water will flow out. So where is the water that is currently flowing coming from?

In fact, this water is poured from the auxiliary water pipe, and even if the water tank discharge valve is closed, it is water from the overflow pipe that is constantly communicating with the water tank.

In this way, siphon and siphon jet toilets use the siphon effect of the toilet bowl to drain waste, and after draining the toilet, water from an auxiliary water pipe is passed through an overflow pipe to stop the odor coming from the sewer. A feature not found in other toilets is that it flushes through the toilet.

In other words, if the water from the auxiliary water pipe is not flushed into the toilet bowl, the toilet will become stinky due to the odor coming from the sewerage system, and the present invention also takes measures against such odors.

(Effects) As described above, the present invention provides an overflow pipe that communicates with the outflow opening of toilet flushing water inside the toilet flushing water tank, provides a pipe in the overflow pipe, and connects the overflow pipe to the outflow opening. An in-toilet odor trapping and conveying device configured to suck in odors mainly from the toilet bowl, the pipe being equipped with an air intake valve mechanism having a valve body for opening and closing the pipe. The air intake valve mechanism closes the valve body for the pipe when the water level of the wash water inside the water tank is at least at the upper limit water level regulated by a water level adjustment mechanism provided inside the water tank. and is configured to be in an open state to allow air to flow into the pipe line when wash water flows out from the outflow opening via a water discharge valve mechanism provided inside the water tank or the overflow pipe. As a result, if the water discharge valve mechanism is activated while the suction mechanism for suctioning odors is in operation, for example, after using the toilet, the water discharge valve mechanism is activated and the flushing water in the water tank is flushed into the toilet bowl. Even if the water spills out, the negative pressure inside the pipe is released by the operation of the air intake valve mechanism, which prevents the pressure inside the overflow pipe from suddenly becoming negative due to the flowing water. This has the advantage that excessive pressure on the suction mechanism due to negative pressure is prevented, the flushing water in the water tank can flow smoothly into the toilet bowl, and knocking of the water discharge valve mechanism does not occur. In addition, even if the suction mechanism is activated while flush water is flowing into the toilet bowl through the overflow pipe, air can flow into the pipe due to the operation of the air intake valve mechanism. This prevents inflowing cleaning water from being sucked into the suction mechanism, thereby eliminating damage to the electrical system such as the fan and motor that make up the suction mechanism or overloading the suction mechanism, and preventing cleaning water from flowing into the overflow pipe. Because the inflow of water is not blocked by negative pressure, washing water does not overflow to the outside of the water tank.
Furthermore, it has the advantage that generation of abnormal noise within the pipe can be completely prevented.

[Brief explanation of drawings]

1 to 5 show a first embodiment of the present invention,
Fig. 1 is a perspective view of a seated corner low tank type toilet device, Fig. 2 is a front view of the inside of the water tank mainly showing the toilet odor capture and conveyance device, Fig. 3 is a plan view of the main part of Fig. 2, Fig. 4 is an enlarged cross-sectional view taken along the line - in Fig. 2, Fig. 5 is an enlarged view of the main part of Fig. 2 showing a state in which the air intake valve mechanism is closed, and Figs. 6 and 7 are views of the present invention. FIG. 6 is a front view showing the toilet odor trapping and conveying device, and FIG. 7 is a sectional view taken along the line - in FIG. 6. DESCRIPTION OF SYMBOLS 1... Toilet bowl, 1a... Rim part, 2... Water tank, 3... Washing pipe, 5... Water discharge valve mechanism, 8... Overflow pipe, 9... Ball tap, 10, 110... Cover body, 13 ... Outer cylinder, 17,117 ... Conduit,
19... Air intake valve mechanism, 21... Support rod,
24...Lever, 30...Water tray, 42,142
... Valve body, 34, 134 ... Valve shaft, 111 ... Water pipe, 118 ... First air intake valve mechanism, 119 ...
...Second air intake valve mechanism, 121...Float.

Claims (1)

[Scope of Claims] 1. An overflow pipe that communicates with an outflow opening for flushing water of the toilet bowl is provided inside the toilet flushing water tank, and a pipe is provided in the overflow pipe so that water flows mainly from the outflow opening into the toilet bowl through the pipe. The toilet odor trapping and conveying device is configured to suck in the odor of the toilet, and the pipe is equipped with an air intake valve mechanism equipped with a valve body for opening and closing the pipe. The valve opening mechanism closes the valve body for the pipe when the water level of the wash water inside the water tank is at least at the upper limit water level regulated by a water level adjustment mechanism provided inside the water tank, and When the wash water flows out from the outflow opening via a water discharge valve mechanism provided inside the tank or the overflow pipe, the pipe is opened to allow air to flow into the pipe. This is a toilet odor capture and transport device. 2. Claims characterized in that the air intake valve mechanism is configured to open and close the pipe line with the valve body in conjunction with water supply into the water tank by the water level adjustment mechanism. The toilet odor capture and conveyance device according to item 1. 3 The air intake valve mechanism has a water receiving tray on one end side that receives the pressure of the water supply from the water level adjustment mechanism, and a lever equipped with the valve body on the other end side, and has a lever equipped with the valve body, Claim 2, wherein when the dish receives pressure from the water level adjustment mechanism, the lever rotates and the valve body opens the conduit. Toilet odor capture and transport device. 4. When the water level in the water tank falls below the upper limit water level regulated by the water level adjustment mechanism, the air intake valve mechanism opens an opening provided in the pipe line with the corresponding valve body, thereby opening the pipe line. a first air intake valve mechanism that allows air to flow into the tank; and a valve body that is separate from the valve body of the first air intake valve mechanism when the water level in the tank reaches the upper end of the overflow pipe or higher. Claim 1, further comprising a second air intake valve mechanism that opens a separate opening provided in the conduit to allow air to flow into the conduit. The toilet odor capture and conveyance device described above. 5. The valve bodies of the first air intake valve mechanism and the second air intake valve mechanism operate in conjunction with floats that move up and down in accordance with fluctuations in the water level of the water tank, respectively, so that the valve bodies of the first air intake valve mechanism and the second air intake valve mechanism are connected to the corresponding 5. The toilet odor trapping and conveying device according to claim 4, characterized in that the opening is configured to open and close.