JP4517976B2 - Toilet bowl cleaning device - Google Patents

Description

  The present invention relates to a toilet bowl cleaning apparatus, and more particularly, to a toilet bowl cleaning apparatus that accelerates the activation of a siphon using negative pressure generated by an ejector.

  Early siphon formation by exhausting air from the first trap part connected to the lower part of the toilet bowl, the second trap part downstream of the first trap part, and between the first trap part and the second trap part during toilet cleaning Japanese Patent Laid-Open No. 10-96255 discloses a Western-style toilet facility provided with a negative pressure generating aspirator for converting the pressure into a negative pressure.

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 a jet pump using an ejector action and the air is discharged to a descending conduit of the trap. ing.
Japanese Patent Laid-Open No. 10-96255 JP 2002-61262 A

  In the above Japanese Patent Laid-Open Nos. 10-96255 and 2002-61262, the negative pressure generated by the ejector (aspirator, jet pump) is not stored. Can not be sucked out.

  An object of this invention is to provide the toilet bowl washing | cleaning apparatus which can form rapidly the siphon discharge flow rapidly exhausted from the trap.

The toilet flushing device according to claim 1 is a water supply means for supplying toilet flush water to a toilet bowl, a drainage channel connected downstream of a trap of the toilet, and an intake / exhaust unit for sucking and exhausting air from the drainage channel And the intake / exhaust means is a toilet cleaning device having an ejector for generating a negative pressure and an air tank for storing the negative pressure generated in the ejector, and the ejector water supply valve from the water supply means A branch water supply flow path comprising a branch and connected to the inflow port of the ejector, and the air tank and the air suction port of the ejector allow air to flow from the air tank to the ejector and It is connected via a check valve device that prevents air from flowing in the opposite direction, and the air tank and the drainage channel are connected by a negative pressure passage having a negative pressure passage valve. It is what.

  The toilet bowl cleaning device of claim 2 is characterized in that, in claim 1, the ejector is installed in the air tank.

  The toilet bowl cleaning device according to claim 3 is characterized in that, in claim 1, the ejector is installed on an outer wall of the air tank, and a tip of a suction pipe of the ejector is disposed in the air tank. It is.

  According to a fourth aspect of the present invention, the toilet cleaning device according to any one of the first to third aspects is characterized in that the tip of the suction pipe of the ejector is disposed in the vicinity of the bottom of the air tank.

According to a fifth aspect of the present invention, there is provided a toilet flushing device according to any one of the first to fourth aspects, further comprising a water conduit that guides the discharged water from the ejector to the negative pressure passage .
The toilet flushing device according to claim 6 is the toilet device cleaning device according to any one of claims 1 to 5, wherein the negative pressure passage detects a water level of the negative pressure passage and prevents intrusion of sewage from the drain passage. The sewage intrusion prevention means is a float valve device in which the float valve rises and closes when sewage flows in, and the float valve support is provided inside the float valve device. The float valve is characterized in that the float valve can move up and down on the upper side of the float valve support.
A toilet flushing device according to a seventh aspect is the toilet flushing device according to the sixth aspect, further comprising a water conduit that guides the discharged water of the ejector to the negative pressure passage, and the water conduit is connected to the float valve device. It is characterized by that.

In toilet flushing equipment of the present invention, when the toilet flushing, accumulated a negative pressure generated by the ejector air tank, since the air suction and discharge from the drain passage of the trap downstream side by the negative pressure in the air tank, rapid suction It can be discharged. For this reason, the siphon discharge flow which flows out from a toilet bowl to a drainage channel is formed at an early stage.

  In this invention, the installation space of an ejector is abbreviate | omitted by installing this ejector in an air tank. Further, by installing this ejector on the outer wall of the air tank, it is easy to manufacture the ejector and the air tank.

  Even if the ejector is condensed or water leaks from the ejector, the condensed water or the water leaks at the bottom of the air tank, so that it does not spill on the toilet room floor.

  By disposing the tip of the suction pipe of the ejector in the vicinity of the bottom of the air tank, the water accumulated at the bottom of the air tank can be sucked and discharged by the ejector.

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

  FIG. 1 is a schematic diagram of Western-style toilet equipment equipped with a toilet cleaning device according to an embodiment, and FIG. 2 is a flow diagram for explaining the operation of the toilet cleaning device of FIG. FIGS. 3 to 8 show the Western-style toilet equipment of FIG. 1 in the order of non-cleaning, toilet bowl water level raising process, filth discharge process, trap-sub and lap pressure release process, It is a schematic diagram which shows the operation state when it exists in a pressure accumulation process and a standby state. In FIGS. 3 to 8, a part of FIG. 1 is omitted for easy understanding.

  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, and the lowest portion 6b is submerged in the sealed water of the sub trap 6 when the toilet is not used. Yes.

  However, the lowest-order part 6b may be slightly higher than the highest-order part 6a, and may be located slightly higher than the sealing surface of the sub-trap 6 when the toilet is not used. Thus, even when the lowest level portion 6b is higher than the sealing surface, when the water level rises due to negative pressure being applied to the drainage channel 5 or water flowing into the sub-trap 6, the lowest level The part 6b can be immersed in the sealed water to separate the inside of the drainage channel 5 and the drainage port 7 side.

  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 3 with respect to the rim 3. When water is supplied forward from the water supply pipe 10 toward the right or left rim 3 from the rear side of the toilet bowl, a clockwise or counterclockwise swirling flow is formed in the toilet bowl 2.

The water supply pipe 10 is provided with a main valve V ₁ , a pressure regulating valve V _REG , a water turbine unit 11 having a water wheel 12, and a vacuum breaker 14 in order from the upstream side.

The main valve V ₁ was seated on the valve seat portion of the valve body by applying a water supply pressure to the head side of the valve body and causes closed, the pressure of the head-side first activation valve V ₂ or the second activation valve a hydraulic control type valve which opens by opening the V _7.

Drainage side of the first activation valve V ₂ is connected between the main valve V ₁ DOO regulating valve V _REG through the pipe 18a. Drainage side of the second activation valve V ₇ is communicated with the casing 50 to be described later through a pipe 18b. First activation valve V ₂ is opened by pushing, consisting of self-closed valve closed when released.

A pipe 15 provided with an ejector water supply valve V ₄ is branched from a position between the water turbine unit 11 and the vacuum breaker 14 of the water supply pipe 10. The end of the pipe 15 is connected to an inflow port of an ejector 21 disposed in the negative pressure accumulating air tank 20.

  Since the ejector 21 is arranged in the air tank 20 as described above, a smaller installation space is sufficient compared to the case where the ejector 21 is arranged outside the air tank 20. In addition, even if the ejector 21 is condensed or water leaks from the joint between the ejector 21 and its piping, the condensed water and the water are collected at the bottom of the air tank 20 and do not wet the toilet room floor. .

  A base end of an air suction pipe 22 provided with a check valve 23 is connected to an air suction port provided in the throat portion of the ejector 21. The tip of the pipe 22 is disposed near the bottom surface of the air tank 20, and even when water accumulates in the air tank 20, this water can be sucked and discharged through the pipe 22 when the ejector 21 is operated. .

  The check valve 23 allows air to flow from the air suction pipe 22 to the ejector 21 and prevents air from flowing in the opposite direction.

  One end of the pipe 16 is connected to the outlet of the ejector 21, and the other end of the pipe 16 is drawn out of the air tank 20 and connected to the water port 30 a at the upper part of the float valve device 30. The lower part of the float valve device 30 communicates with the upper part of the drainage flow path 5 through a pipe 33. The configuration of the float valve device 30 will be described later.

The ejector 21 is installed with the water flow direction facing upward, and the pipe 15 falls from the ejector water supply valve V ₄ and continues to the inlet at the lower end of the ejector 21. The pipe 16 is connected to the outlet at the upper end of the ejector 21 and rises upward. These pipe 15, ejector 21 and pipe 16 constitute a substantially U-shaped trap. This trap has a function of blocking the flow of water from the pipe 16 to the pipe 15 side.

However, the direction of the ejector 21 may be reversed upside down and the water flow direction may be set downward. In this case, the pipe 15 falls from the ejector water supply valve V ₄ and continues to the inlet at the upper end of the ejector 21. The pipe 16 rises upward in connection with the outlet at the lower end of the ejector 21.

A pipe 24 for transmitting negative pressure is connected to the upper part of the air tank 20, and the pipe 24 is connected to a negative pressure port 30 b at the upper end of the float valve device 30 via an on-off valve V ₅ and a pipe 25.

  A float valve support 32 is provided in the lower part of the float valve device 30, and a float valve 31 that can be moved in the vertical direction is disposed above the float valve support 32. When the float valve 31 is placed on the support 32, the ports 30 a and 30 b communicate with the drainage flow path 5 through the pipe 33. When water flows into the float valve device 30 from the drainage flow path 5 via the pipe 33, the float valve 31 rises on the water and sits on the port 30b from below to close the port 30b. The sewage is prevented from flowing into the air tank 20 rather than the pipe 25.

A pipe 26 is branched from a middle portion of the pipe 25, and the end of the pipe 26 is connected to the downstream side of the sub-trap 6 (near the drain port 7). Off valve V ₆ is provided in the pipe 26.

The ejector water supply valve V ₄ is opened by applying a water supply pressure to the head side of the valve body to seat the valve body on the valve seat portion and closing the valve body, and opening the water pressure on the head side by the start valve V ₈ . This is a hydraulically controlled valve. The starting valve V ₈ is communicated with the head side of the ejector water supply valve V ₄ through a pipe 35.

The second start valve V ₇ for controlling the main valve V _1, the ejector start valve V _8, and the on-off valves V ₅ and V ₆ are all cam-driven and have a common camshaft. Actuated by cams 41, 42, 43, 44 fixed to 40 and cam rods 41a, 42a, 43a, 44a. The camshaft 44 is connected to the water wheel 12 in the water wheel unit 11 via a gear train 45. A manual lever 46 is fixed to the camshaft 40 and can be turned manually.

Casing 50 is provided so as to surround the boot valve _V 7, _{V 8.} Drainage from the start valves V ₇ and V ₈ is discharged from the casing 50 to the rim 3 via the pipe 51.

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

[Non-cleaning (Fig. 3)]
In Figure 2, the unwashed time earlier than time point t _1, the first, second activation valve V _2, V ₇ for the main valve V ₁ and the main valve are closed.

In this state, which is the ejector activated valve V ₈ is opened, ejector water supply valve V ₄ is also in the open. However, since water is not passed through the water supply pipe 10, the ejector 21 is stopped.

In this state, the opening and closing valve V ₅ is closed, the air tank 20 is sealed. Accordingly, the negative pressure accumulated in the air tank 20 in the water covering / negative pressure accumulating step described later is maintained as it is.

In this state, the opening and closing valve V ₆ is opened. Since the opening and closing valve V ₆ is opened, the drainage channel 5 through the drainage pipe and communicates, usually has the atmospheric pressure.

[Toilet bowl water level rising process (Fig. 4)]
After defecation, the first activation valve V ₂ or manual lever 45 is operated by the toilet user.

For convenience of explanation, here it is described the case where the first start valve V ₂ is operated.

When starting valve V ₂ is operated, the water pressure on the head side of the main valve V ₁ is missing to the downstream side of the main valve V ₁ via the starting valve V _2, the main valve V ₁ is opened. As a result, 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. At this time, a part of the water in the toilet bowl 2 overflows and flows out of the highest trap portion 4a. However, since the amount of inflow water from the rim 3 is larger, the water level in the toilet bowl 2 rises. With this swirling flow, solid excrement is collected on the center side of the toilet bowl, and the paper loosens and blends into the water and becomes dispersed in the water, so when the siphon discharge flow is formed later, the excrement and paper Is discharged smoothly. In addition, the water overflowing the trap highest portion 4 a is collected in the sub trap 6. For this reason, even when the water level in the sub-trap 6 is lowered due to drying or the like, the water level in the sub-trap 6 is increased by this overflow water. This facilitates the formation of a siphon discharge flow described later.

  Further, when the cleaning water flows into the water supply pipe 10, the water wheel 12 in the water wheel unit 11 rotates, and the camshaft 40 rotates at a speed lower than that of the water wheel 11 through the gear train 45.

Cam 42, 43 and 44 is also rotated with the rotation of the camshaft 40, the valve _{V 8, V 5, V 6} is opened at a predetermined timing.

  The timing for opening and closing the valve will be described with reference to FIG.

When the rotation of the cam shaft 40 at the time point t ₁ is started immediately second activation valve V ₇ for the main valve is opened. Therefore, even after the first activation valve V ₂ Release the first activation valve V ₂ is closed, not applied water pressure on the head side of the main valve V _1, the main valve V ₁ was left open It becomes. Incidentally, the main valve V ₁ was, as described below, the second activation valve V ₇ remains open until closed.

After opening of the main valve V _1, the predetermined time is bowl surface is cleaned with the water level in the toilet bowl 2 is increased, also, as described above swirling flow is formed.

At this time, since the ejector activation valve V ₈ is in the left in and ejector water supply valve V ₄ is also opened in the open, negative pressure water flows to the ejector 21 when water flows through the water supply pipe 10 is generated, this A negative pressure is accumulated in the air tank 20 due to the negative pressure. The discharged water from the ejector 21 is discharged to the drainage flow path 5 through the pipe 16 and the float valve device 30. The inside of the float valve device 30 is washed with water by the ejector drainage at this time. In addition, the ejector waste water is accumulated in the sub trap 6 through the drain passage 5, and the water level in the sub trap 6 is thereby raised.

Becomes a time point t ₂ when the predetermined time has elapsed, the ejector activation valve V ₈ is closed, the ejector water supply valve V ₄ is closed. Thereby, all the water passing through the water supply pipe 10 is supplied to the toilet bowl 2.

If this t ₂ and the time point t ₃ when the same or closely spaced reached, closing valve V ₆ is closed, communicating via a pipe 25 with the drain passage 5 and the water discharge port 7 side is cut off, drain passage 5 is a closed space.

[Soil discharge process (Fig. 5)]
off valve _{V 5} to reach the point of t ₄ to open. Thereby, the negative pressure in the air tank 20 is transmitted to the drainage flow path 5 via the pipes 24 and 25, the float valve device 30, and the pipe 33, and the inside of the drainage flow path 5 is decompressed. At this time, the air in the drainage flow path 5 is quickly sucked and discharged by the low-pressure and large-capacity negative pressure accumulated in the air tank 20. Further, the water level in the toilet bowl 2 is sufficiently high as shown by ΔH in FIG. 1, and the water head difference ΔH with respect to the highest trap portion 4a is sufficiently large. For this reason, the sewage in the toilet bowl 2 is expelled from the trap 4 to the drainage flow path 5 by virtue of a powerful biasing force that is a combination of this water head difference ΔH and a sufficient negative pressure in the drainage flow path 5. In addition, a strong siphon discharge flow is formed in the drainage flow path 5.

  Thus, in this process, since it is not necessary to supply water to the ejector 21 for negative pressure accumulation, all the water passing through the water supply pipe 10 is supplied to the toilet bowl 2. For this reason, the water level in the toilet bowl 2 becomes sufficiently large, and a strong siphon discharge flow is formed. Further, a sufficient negative pressure is accumulated in the air tank 20 in advance in the toilet bowl water level raising step, and this negative pressure is transmitted to the drainage channel 5 in this step, so the inside of the drainage channel 5 is instantaneously reduced in pressure. Siphon discharge flow is formed early.

  In addition, when the sewage in the drainage flow path 5 is attracted | sucked in the float valve apparatus 30, the float valve 31 will raise by buoyancy and will close the port 30b. Thereby, the sewage in the drainage flow path 5 is prevented from flowing back into the pipe 25 or the air tank 20. Further, as described above, the inner surface of the float valve device 30 contaminated with sewage is washed with the ejector discharge water during the operation of the ejector 21.

Becomes a time t ₅ of the end of the soil discharging process, on-off valve V ₅ is closed, a negative pressure transmission from the air tank 20 is stopped.

[Step of releasing pressure between trap and sub trap (Fig. 6)]
Thereafter, at time t ₅ ′, the release valve V ₆ is opened, the trap 4 and the sub trap 6 communicate with the drain port 7, and the trap 4 and the sub trap 6 return to atmospheric pressure. . Thereby, it is possible to stably cover and seal the toilet bowl 2, the trap 4 and the sub-trap 6 in the covering / negative pressure accumulating step described later.

[Water-covering / negative-pressure accumulation process (Fig. 7)]
Thereafter, at a time point t _6, is the ejector activated valve V ₈ is opened, thereby are ejector water supply valve V ₄ is opened. Moreover, the opening and closing valve _{V 6} is opened. The sewage in the toilet bowl 2 at the time of t ₆ are almost all are discharged, toward the drain passage 5 make a so-called gurgling sound by mixing sewage and air flow. At this time, since the on-off valve V ₅ is closed, without air flows into the air tank 20, it is avoided wasteful consumption of the negative pressure in the air tank 30.

negative pressure in the drain passage 5 is eliminated by being off valve V ₆ is opened at the time of t _6, also stopped draining from the toilet bowl 2. At this time, since water supply to the rim 3 is continued through the main valve V ₁ and the water supply pipe 10, water gradually accumulates in the toilet bowl 2 and water covering is performed. The water level in the toilet bowl 2 rises to the same water level as that of the highest trap portion 4a.

Incidentally, by becoming ejector water supply valve V ₄ is opened at the time of t _6, to start the ejector 21, the negative pressure is accumulated again in the air tank 20.

[Standby state (Fig. 8)]
comes to a point t _7, the second activation valve V ₇ for the main valve is closed, the main valve V ₁ and following this is closed, the water flow of the water supply pipe 10 is stopped. Thereby, the toilet bowl cleaning apparatus is in a standby state.

  With the stoppage of the water supply pipe 10, the water supply to the ejector 21 is also stopped. Since the check valve 23 is provided between the throat portion of the ejector 21 and the air tank 20, the atmosphere does not flow into the air tank 20 from the stopped ejector 21, and the negative pressure accumulated in the air tank 20 Is maintained as it is.

Note that the ejector water supply valve V ₄ and the on-off valve V ₆ remain open even at time t ₇ , and this state continues until the next toilet flush (operation of the first start valve V ₂ ).

<Operation during manual steering>
The above description of the operation is a case of operating the first activation valve V ₂ for the main valve, similar series of operations even when operating the manual handle 46 is carried out. In this case, the first activation valve V ₂ for the main valve remains closed. Main valve V ₁ was opened and closed following the opening and closing of the second activation valve V _7. The operation order of the other valves V _{4 to} V ₆ and V ₈ is the same as that in FIG.

<Time difference between _{t 1} and _{t 4>}
The time difference between the time point t _{1 at} which the main valve V ₁ is opened and water supply to the rim 3 is started and the time point t ₄ at which suction in the drainage channel 5 is started is preferably about 3 to 20 seconds, particularly about 7 to 15 seconds. Thus, instead of setting the interval between t ₁ and t ₄ with a time difference, the interval may be set with the amount of water supplied to the rim 3.

<Another aspect>
This embodiment is an example of the present invention, and the present invention is not limited to the above embodiment. For example, the ejector 21 may be installed on the side wall of the air tank 21A as shown in FIG. 9, the ejector 21 may be installed on the upper wall of the air tank 21B as shown in FIG. 10, and the ejector as shown in FIG. 21 may be installed on the lower wall of the air tank 21C. In the case of FIG. 11, the air suction pipe 22 is omitted, but the water accumulated in the air tank 20C can be sucked by the ejector 21 through the check valve 23.

  Further, all or some of the valves may be opened / closed by electric control.

  Although the above embodiment is a siphon type cleaning, it may be a siphon jet type cleaning.

  Further, the washing process may be different between stool and urine.

It is a schematic diagram of the Western-style toilet equipment which concerns on embodiment. It is a flow explaining the action | operation of the western-style toilet equipment of FIG. It is a schematic diagram explaining the action | operation of the western style toilet bowl equipment of FIG. 1 at the time of non-washing. It is a schematic diagram explaining the action | operation of the western-style toilet equipment of FIG. 1 in a toilet bowl water level raising process. It is a schematic diagram explaining the action | operation of the western-style toilet equipment of FIG. 1 in a filth discharge process. It is a schematic diagram explaining the action | operation of the western-style toilet equipment of FIG. 1 in the air | atmosphere release process of the trap-subtrap pressure. It is a schematic diagram explaining the action | operation of the western style toilet equipment of FIG. 1 in a water covering and negative pressure accumulation | storage process. It is a schematic diagram explaining the action | operation of the western-style toilet equipment of FIG. 1 in a standby state. It is a schematic diagram of another western style toilet bowl equipment. It is a schematic diagram of another Western-style toilet equipment. It is a schematic diagram of different Western style toilet equipment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Toilet body 2 Toilet bowl 3 Rim 4 Trap 5 Drain flow path 6 Sub trap 7 Drain port 10 Water supply pipe 11 Water turbine unit 20, 20A, 20B, 20C Air tank 21 Ejector 22 Air suction piping 23 Check valve 30 Float valve device 40 Cam Shaft 41, 42, 43, 44 Cam

Claims (7)

Water supply means for supplying toilet flushing water to the toilet bowl,
A drainage channel connected to the downstream side of the toilet trap,
Intake / exhaust means for sucking and discharging air from the drainage channel;
The suction / exhaust means is a toilet cleaning device having an ejector for generating negative pressure and an air tank for storing the negative pressure generated in the ejector ,
A branch water supply flow path provided with an ejector water supply valve is branched from the water supply means and connected to the inlet of the ejector;
The air tank and the air suction port of the ejector are connected via a check valve device that allows air to flow from the air tank to the ejector and prevents air from flowing in the opposite direction;
The toilet cleaning apparatus, wherein the air tank and the drainage flow path are connected by a negative pressure passage having a negative pressure passage valve.   2. The toilet bowl cleaning apparatus according to claim 1, wherein the ejector is installed in the air tank.   2. The toilet bowl cleaning apparatus according to claim 1, wherein the ejector is installed on an outer wall of the air tank, and a tip of a suction pipe of the ejector is disposed in the air tank. The toilet bowl cleaning device according to any one of claims 1 to 3, wherein a tip of the check valve device is disposed in the vicinity of a bottom portion in the air tank. The toilet bowl cleaning apparatus according to any one of claims 1 to 4, further comprising a water conduit that guides the discharged water of the ejector to the negative pressure passage. 6. The sewage infiltration prevention means according to any one of claims 1 to 5, wherein the negative pressure passage has a means for detecting a water level of the negative pressure passage and preventing sewage from entering the drainage passage. And
The sewage intrusion prevention means is a float valve device that floats and closes when sewage flows.
A toilet flushing device, wherein a float valve support is provided inside the float valve device, and the float valve can move up and down on the upper side of the float valve support. In Claim 6, It is a toilet bowl washing device provided with the water guide way which guides the discharge water of the ejector to the negative pressure passage,
The toilet flushing device is characterized in that the water conduit is connected to the float valve device.

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