JP2007218038A - Suction-exhaust device of toilet bowl drainage channel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction-exhaust device of a toilet bowl drainage channel capable of controlling a suction speed and a suction quantity when sucking and exhausting air from the toilet bowl drainage channel. <P>SOLUTION: A main valve V<SB>1</SB>is opened, and flush water is supplied to the rim 3 via a water supply pipe 10, and a toilet bowl is flushed, and a part of the flush water passes through into an ejector 21 via a pipe 12. Thus, negative pressure is accumulated in a negative pressure tank 30. Next, an operation valve V<SB>4</SB>is opened, and the negative pressure tank 30 communicates with a first chamber 41 of an operation tank 40. Thus, a diaphragm 43 in the operation tank 40 is pulled up, and the air in the drain flow passage 5 is sucked and exhausted in a second chamber 42 of the operation tank 40, and a siphon discharge flow is formed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a toilet drainage intake / exhaust device for accelerating siphon formation, and more particularly to the intake / exhaust device having a negative pressure generator.

  A siphon that exhausts air from a first trap portion connected to the lower portion of the toilet bowl, a second trap portion downstream of the first trap portion, and a drainage channel between the first trap portion and the second trap portion when cleaning the toilet bowl. Japanese Patent Laid-Open No. 10-96255 discloses a Western-style toilet facility provided with a negative pressure generating aspirator for accelerating formation. In addition, the air sucked out from the drainage channel is discharged to the rim water channel together with the aspirator discharge water.

Japanese Patent Application Laid-Open No. 2002-61262 describes a toilet cleaning method in which air is sucked out from the top of a trap by an ejector and the discharged water of the ejector is discharged to a descending conduit of the trap when cleaning the toilet. Yes.
Japanese Patent Laid-Open No. 10-96255 JP 2002-61262 A

  In the above-mentioned JP-A-10-96255 and JP-A-2002-61262, the negative pressure generated in the ejector is directly transmitted to the drainage channel. Adjustment is difficult.

  An object of the present invention is to provide a suction / exhaust device for a toilet drainage channel capable of controlling the suction speed and the suction amount when air is sucked and discharged from the drainage channel.

  A suction / exhaust device for a toilet drainage channel according to claim 1 is a suction / exhaust device that sucks and exhausts air from a toilet drainage channel by a negative pressure generator, and a negative pressure tank that stores the negative pressure generated by the negative pressure generator, and the inside is movable. A working chamber partitioned into a first chamber and a second chamber by a partition; switching means for switching between communication and blocking between the first chamber and the negative pressure tank; the second chamber and the toilet drainage And a communication path that communicates with the road.

  According to a second aspect of the present invention, there is provided an air intake / exhaust device for a toilet drainage channel according to the first aspect, further comprising an air release valve that communicates and shuts off the first chamber and the atmosphere.

  The intake / exhaust device for the toilet drainage channel of the present invention has a negative pressure tank that stores the negative pressure generated by the negative pressure generator. Siphon formation in the drainage channel is effective by transferring the negative pressure stored in the negative pressure tank to the first chamber of the working chamber and sucking and exhausting air in the toilet drainage channel to the second chamber of the working chamber. Done.

  In the present invention, when the first chamber communicates with the negative pressure tank by the switching means, the first chamber side becomes negative pressure, the negative pressure acts to move the movable partition to the first chamber side, and the second chamber The chamber volume increases. Since the increase amount of the volume of the second chamber at this time is constant, the amount of air sucked and exhausted from the toilet drainage channel to the second chamber becomes constant as the volume of the second chamber increases. For this reason, the siphon formation in the drainage channel is stably performed, and it is prevented that water is sucked together with the air in the drainage channel.

  In addition, by selecting the internal volume of the working chamber, the amount of air sucked and exhausted from the toilet drainage channel to the second chamber can be set to an appropriate amount.

  Further, by selecting the internal volume of the negative pressure tank, the vent diameter of the switching means, etc., the speed of suction and exhaust from the toilet drainage channel to the second chamber can be controlled. For example, when the internal volume of the negative pressure tank is small, the negative pressure in the negative pressure tank suddenly decreases when the first chamber and the negative pressure tank are communicated by the switching means, so the intake / exhaust speed decreases. On the other hand, if the internal volume of the negative pressure tank is increased, the negative pressure in the negative pressure tank does not weaken much when the first chamber and the negative pressure tank are communicated by the switching means, so the intake / exhaust speed is slow. Don't be.

  In the present invention, the first chamber and the second chamber are partitioned by the movable partition, and only the second chamber side is communicated with the toilet drainage channel, so that the sewage or odor-containing air in the toilet drainage channel has a negative pressure. It is prevented from entering the tank or the negative pressure generator.

  The intake / exhaust device for a toilet drainage channel according to the present invention preferably further includes an air release valve for communicating and blocking the first chamber and the atmosphere. In this case, the first chamber can be returned to atmospheric pressure by opening the air release valve after suction and exhaust from the toilet drainage channel to the second chamber. Thereby, the movable partition is returned to the original position, and the next cleaning is performed stably.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 to 6 are Western-style toilet equipment equipped with an intake / exhaust device for a toilet drainage channel according to an embodiment, respectively, in the non-washing state, toilet bowl washing / negative pressure accumulating step, intake / exhaust step, initial stage of additional water step It is a schematic diagram which shows the operation state when it exists in the last stage of a follow-up water process and air | atmosphere release and a water covering process. FIG. 7 is a timing chart for explaining the operation of the Western-style toilet equipment of FIGS.

  A rim 3 is provided on the inner periphery of the upper part of the toilet bowl 2 in the porcelain western-style toilet body 1. The toilet bowl 2 communicates with a drain outlet 7 via a trap 4, a drain channel 5, and a sub-trap 6. The drainage flow path 5 falls downward from the highest trap portion 4 a and continues to the sub-trap 6. The drain port 7 is connected to a drain pipe.

  The sub-trap 6 is composed of a U-shaped channel that goes around the lower side of the lowest portion 6b below the pipe wall of the drainage channel 5 and then reaches the highest portion 6a for overflow. The height of the highest portion 6a of the sub trap 6 is slightly higher than the lowest portion 6b.

  However, the lowest-order part 6b may be slightly higher than the highest-order part 6a. In this case, even if water accumulates in the sub-trap 6, the height of the water surface is lower than the lowest position portion 6b. However, if a negative pressure is applied to the drainage channel 5 as described later and a large amount of water flows into the sub-trap 6, the water level in the sub-trap 6 rises above the lowest portion 6b, and the sub-trap 6 is sealed. Watered. Thereby, the inside of the drainage flow path 5 and the drainage port 7 side are sealed.

  A water supply pipe 10 is connected to the rim 3. The toilet body 1 is of a one-way water supply system in which water is supplied only from the rear side of the toilet bowl to the right side or the left side of the rim 3. For this reason, when water is supplied from the water supply pipe 10 toward the rim 3, a clockwise or counterclockwise swirling flow is formed in the toilet bowl 2.

  Pipes 11, 12, and 13 are branched from the water supply pipe 10. A vacuum breaker 11 a is provided at the tip of the pipe 11.

The pipe 12 is introduced into the water tank 20 and its tip is connected to the inlet of an ejector 21 as a negative pressure generator. The base end of the pipe 23 is connected to the outlet of the ejector 21, and the tip of the pipe 23 is open in the water tank 20. The air suction port provided in the throat portion of the ejector 21, the proximal end of the air suction pipe 22 is connected with a check valve V _3. The end of the pipe 22 is drawn out of the water tank 20 and connected to the negative pressure tank 30.

The check valve V ₃ is one in which air is allowed to flow from the air suction pipe 22 into the ejector 21 prevents this and that the air flows in the opposite direction. This check valve V ₃ is provided outside the water tank 20.

The negative pressure tank 30 is connected to the base end of a pipe 31 provided with an operating valve V ₄ as a switching means, and the tip of the pipe 31 is connected to the upper part of the operating tank 40. The working tank 40 is partitioned into an upper first chamber 41 and a lower second chamber 42 by a diaphragm 43 serving as a movable partition. The pipe 31 is connected to the first chamber 41. Further, the first chamber 41 of the hydraulic tank 40 is connected to the proximal end of the atmosphere open pipe 32 with the air release valve V _5, the tip of the pipe 32 is open to the atmosphere. The second chamber 42 of the working tank 40 and the upper end portion of the drainage flow path 5 communicate with each other via a communication path 44.

A pipe 13 is connected to the downstream side of the connection portion of these pipes 11 and 12 in the water supply pipe 10. The pipe 13 is provided with an on-off valve V ₂ , and the tip of the pipe 13 is introduced into the water tank 20 and connected to the inlet on the lower end side of the jet pump 24. A water suction port 24 a provided in the throat portion of the jet pump 24 is open in the water tank 20. The water suction port 24 a is located at the lower part in the water tank 20.

  A base end of a water follow-up pipe 25 is connected to an outlet of the jet pump 24, and a front end of the pipe 25 is drawn from the water tank 20 and connected to the rim 3.

This Western-style toilet equipment is provided with control means (not shown) for controlling the opening and closing timings of the main valve V ₁ , the on-off valve V ₂ , the operation valve V ₄ and the atmosphere release valve V ₅ . The control means is not particularly limited, and for example, each valve may be opened / closed by an electric signal, or the valve may be mechanically opened / closed. When the valve is mechanically opened and closed, for example, a water wheel is provided in the water supply pipe 10, the rotation of the water wheel is transmitted to a shaft provided with a plurality of cams via a gear train, and each cam driven valve is rotated by the rotation of each cam. V ₁ , V ₂ , V ₄ and V ₅ may be opened and closed.

  Although not shown, the water tank 20, negative pressure tank 30, working tank 40, control means and the like are housed in a unit case provided at the rear part of the Western-style toilet body 1.

  Next, the operation of the Western-style toilet equipment configured as described above will be described.

[Non-cleaning (Fig. 1)]
In FIG. 7, the main valve V ₁ , the on-off valve V ₂ , the operation valve V _4, and the atmosphere release valve V ₅ are closed at the time of non-cleaning before the time t ₁ .
In this state, the diaphragm 41 in the working tank 40 is in contact with the bottom surface in the working tank 40.

[Toilet bowl washing and negative pressure accumulation process (Fig. 2)]
After defecation, at a time point t ₁ of FIG. 7, the main valve V ₁ is being opened operated by the toilet user.
When the main valve V ₁ is opened, wash water is supplied from the water supply pipe 10 to the rim 3, and flows down while turning along the inner surface of the toilet bowl 2, and a swirling flow is formed in the toilet bowl 2. This swirling flow collects solid excrement in the center of the toilet bowl, loosens the paper and blends in with water, and disperses in the water. For this reason, when a siphon discharge flow is formed later, excrement and paper are discharged smoothly.

A part of the cleaning water flowing in the water supply pipe 10 is stored in the water tank 20 through the pipe 12, the ejector 21 and the pipe 23. By this ejector water flows into 21, ejector 21 sucks the exhaust in the water tank 20 through the air pipe 22 and the check valve V ₃ in the vacuum tank 30. Thereby, the negative pressure is gradually accumulated in the negative pressure tank 30.

  The air supplied from the negative pressure tank 30 into the water tank 20 accumulates in the upper part of the water tank 20.

  By supplying water from these pipes 12 and air from the negative pressure tank 30 into the water tank 20, the inside of the water tank 20 is gradually pressurized.

[Intake and exhaust process (Fig. 3)]
At the time of t _2, hydraulic valve V ₄ is opened by the control means. Thus, the negative pressure in the negative pressure tank 30 is transmitted to the first chamber 41 of the hydraulic tank 40 through the pipe 31 and the operating valve V _4, the first chamber 41 is reduced. Due to the reduced pressure in the first chamber 41, the diaphragm 43 in the working tank 40 is pulled up, and the diaphragm 43 moves and contacts the ceiling surface of the working tank 40 as shown in FIG.

  As the diaphragm 43 moves, the air in the drainage channel 5 is sucked and exhausted into the second chamber 42 of the working tank 40 via the communication path 44, and the inside of the drainage channel 5 is decompressed. At this time, the water level in the toilet bowl 2 is sufficiently high due to the water supply from the water supply pipe 10, and the water head difference from the highest trap portion 4a is sufficiently large. For this reason, the sewage in the toilet bowl 2 is vigorously discharged from the trap 4 to the drainage channel 5 by the biasing force of the head difference and the negative pressure in the drainage channel 5, and the trap 4 and the drainage channel 5. A strong siphon discharge flow is formed inside.

  Due to the formation of the siphon discharge flow, the water in the toilet bowl 2 flows vigorously, the water level in the toilet bowl 2 decreases, and the water level approaches the height of the trap 4 entrance. For this reason, a lightweight object floating in water such as paper is easily discharged from the entrance of the trap 4.

As described above, in this embodiment, the inside of the drainage flow path 5 is set to a negative pressure by using the negative pressure sufficiently accumulated in the negative pressure tank 30. Therefore, when opening the operation valve V _4, rapidly drain passage 5 is decompressed, the toilet bowl 2 to the trap 4 is as water flows vigorously, efficiently siphon discharge flow is formed.

  In the present embodiment, the inside of the working tank 40 is partitioned into a first chamber 41 and a second chamber 42 by the diaphragm 43, and only the second chamber 42 communicates with the drainage flow path 5. For this reason, the sewage of the drainage flow path 5 or the air containing odor is prevented from entering the negative pressure tank 30 or the ejector 21 side.

  In the present embodiment, the diaphragm 43 moves from a position where it contacts the bottom surface of the working tank 40 to a position where it contacts the ceiling surface of the working tank 40, so that a certain amount of air corresponding to the volume of the working tank 40 flows into the drainage flow. It is sucked and exhausted from the passage 5. Accordingly, by appropriately selecting the volume of the working tank 40, an appropriate amount of air can be sucked and exhausted from the drainage channel 5 without excess or deficiency.

  In addition, the amount of air sucked and exhausted from the drainage channel 5 to the second chamber 42 is appropriately selected by selecting the internal volume of the working tank 40 according to the volume of the toilet bowl 2, the trap 4 and the drainage channel 5. The amount can be made.

Further, the opening diameter of the volume and operating valve V ₄ of the negative pressure tank 30, the opening degree, by adjusting the tube diameters of the pipe 31, it is possible to adjust the intake and exhaust velocity of air in the drainage flow path 5. For example, when the volume of the negative pressure tank 30 is large and a large volume of negative pressure can be stored, the diaphragm 43 is rapidly pulled up by the negative pressure in the negative pressure tank 30, and the drainage flow path The air intake / exhaust speed from inside 5 is increased. If you increase the opening degree of the hydraulic valve V ₄ is the same. On the other hand, or to reduce the volume of the negative pressure tank 30, in the case of small degree of opening of the actuated valve V _4, intake and exhaust velocity of the air from the water discharge flow channel 5 becomes slow.

[Initial water replenishment process (Fig. 4)]
At time of t ₃ when the water level in the toilet bowl 2 is reduced to the height near the inlet of the trap 4, the on-off valve V ₂ is opened by the control means. As a result, part of the cleaning water in the water supply pipe 10 is diverted and supplied to the rim 3 via the pipe 13, the jet pump 24 and the pipe 25. At this time, the water stored in the water tank 20 is stored in the jet pump 24 by the water flow of the cleaning water flowing in the jet pump 24 and the applied pressure generated in the water tank 20 in the steps of FIGS. Is sucked from the water suction port 24 a and supplied to the rim 3 through the pipe 25 together with the washing water from the pipe 13. Thereby, the water level in the water tank 20 falls.

  In this way, in addition to the wash water supplied from the water supply pipe 10 to the rim 3, additional supply water (additional water) from the pipe 25 is also supplied to the toilet bowl 2, so that the water level of the toilet bowl 2 rises. For this reason, the trap 3 does not break, the siphon operation continues without interruption, and the waste discharge capability is high. In addition, this additional water strongly discharges lightweight materials such as paper remaining in the toilet bowl 2.

In the present embodiment, the water supplied to the ejector 21 in the steps of FIGS. 2 to 3 is stored in the water tank 20 and this stored water is used as additional water, so that effective use of water is achieved. Further, since the discharged water of the ejector 21 is once stored in the water tank 20 and supplied to the toilet bowl 2 by the jet pump 24, a large amount of additional water can be supplied to the toilet bowl 2 at a stretch. Note that by selecting the opening timing of the opening and closing valve V _2, it is possible to freely set the timing of the start and stop of the add water.

  In the present embodiment, the water tank 20 is sealed and, as described above, the water tank 20 is in a pressurized state at the start of water replenishment, so that the water in the water tank 20 is energized by this pressure. And is sucked by the ejector 24 at a high flow rate and in large quantities. For this reason, the supply amount per unit time when water is additionally supplied from the water tank 20 to the toilet bowl 2 can be increased.

  In the present embodiment, since water is taken out from the lower part of the water tank 20 and sent to the toilet bowl 2, the bubbles are separated from the water in the water tank 20, and the additional supply water has no or almost no bubbles. Does not include. As a result, the generation of abnormal noise (for example, bubble burst sound) when the additional supply water flows out to the toilet bowl 2 is prevented.

[End of water replenishment process (Fig. 5)]
As FIG. 5, at time t ₄ when a while elapsed from the time of t _3, the opening and closing valve V ₂ is closed by the control means. As a result, there is no supply of additional water from the pipe 25 to the rim 3, and the water level in the toilet bowl 2 is lowered. When the water level further decreases, the trap 4 is broken and the siphon operation is stopped.

Incidentally, when t ₄ when closing the on-off valve V ₂ is, may be after the water level in the water tank 20 becomes lower than the water suction port provided in the throat of the jet pump 24, the water suction port It is preferable that it is before becoming lower. In this case, the air in the water tank 20 is prevented from being sucked from the water suction port. For this reason, the jet pump 24 is prevented from sucking the air in the water tank 20 to generate abnormal noise, and the water entrained with air flows out of the rim 3 through the pipe 25 and generates abnormal noise. Is also prevented.

[Opening to the atmosphere and water covering process (Fig. 6)]
with operating valve V ₄ is closed by the control means at the time of t _5, the air release valve V ₅ is opened. As a result, the first chamber 41 in the working tank 40 returns to the atmospheric pressure, and the diaphragm 43 is pushed downward by the atmospheric pressure and the dead weight of the diaphragm 43 to come into contact with the bottom surface of the working tank 40, so that the state shown in FIG. Return.
Thereafter, the atmosphere opening valve V ₅ are closed by the control means at the time of t _6.

Later passed since siphon operation stops and the water accumulated in the toilet bowl 2, the main valve V ₁ is being closed at a time point t _7. This returns to the non-cleaning state and the cleaning is completed.

This embodiment is an example of the present invention, and the present invention is not limited to the above embodiment. For example, in the present embodiment, the pipe 32 provided with the atmosphere release valve V ₅ is connected to the upper part of the working tank 40, but is connected to a part of the pipe 31 between the working valve V ₄ and the working tank 40. Also good.

A valve provided on the upstream side of the ejector 21 of the pipe 12, the water passing step may be opened on-off valve V ₂ after closing the valve. In this case, since the amount of washing water flowing in the pipe 13 increases, the stored water in the water tank 20 is sucked and discharged more strongly by the jet pump 24, and the water flow of the additional water becomes stronger.
The water tank 20 is a sealed tank, but may be a non-sealed tank.

It is a schematic diagram which shows a state when the Western-style toilet equipment provided with the suction / exhaust device of the toilet drainage channel which concerns on embodiment is at the time of non-washing. It is a schematic diagram which shows an operating state when the western-style toilet equipment of FIG. 1 exists in a toilet bowl washing | cleaning and negative pressure accumulation process. It is a schematic diagram which shows an operation state when the western-style toilet equipment of FIG. 1 exists in an intake / exhaust process. It is a schematic diagram which shows an operation state when the Western-style toilet equipment of FIG. 1 exists in the water replenishment process initial stage. It is a schematic diagram which shows an operating state when the Western-style toilet equipment of FIG. 1 exists in the last stage of a water replenishment process. It is a schematic diagram which shows an operating state when the Western-style toilet equipment of FIG. 1 exists in an air | atmosphere open | release and water covering process. It is a timing chart explaining the action | operation of the western style toilet equipment of FIGS.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Toilet bowl 2 Toilet bowl 3 Rim 4 Trap 5 Drain flow path 6 Sub trap 7 Drain outlet 10 Water supply pipe 20 Water tank 21 Ejector 24 Jet pump 30 Negative pressure tank 40 Actuation tank 41 First chamber 42 Second chamber 43 Diaphragm 44 Connection aisle

Claims (2)

In an intake / exhaust device that sucks and exhausts air from a toilet drainage channel using a negative pressure generator,
A negative pressure tank for storing negative pressure generated by the negative pressure generator;
A working chamber whose interior is partitioned into a first chamber and a second chamber by a movable partition;
Switching means for switching between communication and blocking between the first chamber and the negative pressure tank;
An air intake / exhaust device for a toilet drainage channel, comprising: a communication passage communicating the second chamber and the toilet drainage channel.   2. The intake / exhaust device for a toilet drainage channel according to claim 1, further comprising an air release valve that communicates and blocks the first room and the atmosphere.

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