JP4281519B2 - Toilet bowl cleaning device - Google Patents

Description

  The present invention relates to a toilet bowl cleaning apparatus that supplies cleaning water to a western style toilet bowl, and more particularly to a toilet bowl cleaning apparatus that is employed when the western style toilet bowl is a siphon jet type western style toilet bowl. More specifically, the present invention relates to an improvement in a toilet cleaning device that supplies cleaning water to a Western-style toilet using tap water pressure without installing a tank such as a low tank or a high tank.

  Many Western-style toilets that have been used in the past are of a low tank type in which a low tank is installed on the upper surface of the rear part of the toilet body and water in the low tank is supplied to a rim or the like.

  This low tank type Western-style toilet is traveling backwards by the amount of the low tank, and in recent years, Western-style toilets that have significantly reduced the rear protrusion of the Western-style toilet by omitting the low tank and supplying cleaning water with tap water pressure have rapidly become available. It is becoming popular. In this toilet flushing device using tap water pressure, a siphon jet cleaning system that forms a siphon discharge water flow by ejecting water from the jet hole to the trap part of the toilet bowl in order to strongly discharge dirt and paper from the toilet bowl. The method is adopted.

  By the way, since flow resistance is generated when water flows in the water pipe, the tap water pressure at the time of water supply is generally lower than the tap water pressure at the time of static water. And since this flow resistance becomes so large that flow volume is large, when supplying water to a toilet bowl with a tap water pressure, it becomes difficult to supply washing water to a toilet bowl with sufficient water power. As a countermeasure, JP-A-7-300891 discloses that a pressure accumulator is provided in the middle of a water pipe.

Further, in FIG. 2 of Japanese Patent Application Laid-Open No. 11-148162, for example, a pressure accumulation tank is installed in the jet flow path branched from the original flow path, and water in the pressure accumulation tank is directed toward the jet hole when supplying water to the jet hole. A toilet bowl cleaning device for discharge is described.
JP-A-7-300891 JP-A-11-148162

  In the Western-style toilet equipment disclosed in Japanese Patent Application Laid-Open No. 7-300891, the Western-style toilet is a blow-out type Western-style toilet, and it is necessary to accumulate the entire amount of washing water supplied to the Western-style toilet using an accumulator. Become a large volume.

  Even in the toilet bowl cleaning device disclosed in Japanese Patent Application Laid-Open No. 11-148162, since the total amount of water supplied to the jet holes is used as the pressure accumulation tank discharge water, the pressure accumulation tank has a large volume. Moreover, in this toilet bowl cleaning apparatus, since the accumulated water is not supplied to the rim, the rim cleaning may be insufficient.

  An object of this invention is to provide the toilet bowl washing | cleaning apparatus which had sufficient toilet bowl washing | cleaning capability even if it used the small pressure accumulator.

The toilet flushing apparatus of the present invention includes an original flow path for supplying flush water to the toilet, a rim flow path and a jet flow path branched from the original flow path, and a pressure accumulation tank that is always in communication with the original flow path. A toilet flushing device comprising a rim water supply valve provided in the rim flow path and a jet water supply valve provided in the jet flow path. (T ₁₎ is opened, then the rim water supply valve to close the by storing water while accumulating pressure tank of a predetermined waiting time (T _2), said waiting time (T ₂₎ said jets water after the lapse the valve a predetermined time (T ₃₎ is opened, after the closing of the jet water supply valve, characterized in that a valve control means Ru is opened for a predetermined time (T ₄₎ by the rim water supply valve is there.

  In the toilet flushing apparatus of the present invention, the accumulated water accumulates in the accumulator tank during hydrostatic pressure (when both the rim water supply valve and the jet water supply valve are closed and the water pressure in the original flow path is high). When the rim water supply valve or the jet water supply valve is opened and the original flow path becomes a water flow state and the water pressure in the original flow path becomes low, the accumulated water in the pressure accumulation tank is added to the original flow path, The water pressure of the road becomes high. Thus, since this invention adds the pressure accumulation water of a pressure accumulation tank in order to raise the water pressure of a flow path, the volume of a pressure accumulation tank is enough compared with the prior art example which accumulates the whole quantity of washing water.

In the toilet bowl cleaning device of the present invention, the accumulated water is supplied to the rim during the predetermined time (T ₁ ), so that the rim can be sufficiently cleaned.

After completion of this rim cleaning, the system waits for a predetermined time (T ₂ ), and then the jet water supply valve is opened. During this waiting time (T ₂ ), water is stored in the pressure accumulation tank. And if a jet water supply valve opens, pressure accumulation water will be added with respect to jet water.

The waiting time (T ₂ ) is preferably 1 to 4 seconds, particularly about 2 to 3 seconds.

  The maximum water storage amount of the pressure accumulating tank is preferably about 150 to 600 cc, particularly about 200 to 500 cc, especially about 250 to 450 cc.

In the present invention, after the jet water supply valve a predetermined time (T ₃₎ was shown closed elapsed, Ru causes the rim water supply valve a predetermined time (T ₄₎ is opened. Trap water is stored in the toilet bowl during this predetermined time (T ₄ ).

  In the present invention, the valve control means includes an electric drive device including a motor, a solenoid and the like for driving the rim water supply valve and the jet water supply valve, and an operation piece capable of manually operating the rim water supply valve and the jet water supply valve. It is good also as a structure which has. When configured in this way, the toilet bowl can be washed manually even during a power failure, and the toilet bowl is washed by supplying pressure-accumulated water in the same manner as during a non-power failure.

  Hereinafter, embodiments will be described with reference to the drawings. FIG. 1A is a perspective view of a Western-style toilet equipment equipped with a toilet cleaning device according to the embodiment, FIG. 1B is a configuration diagram of the electric valve unit, and FIG. 2A is a cleaning water supply flow path. A system diagram and FIG. 2B are water supply timing charts of the cleaning water supply flow path.

  The pottery-made western style toilet 1 includes a bowl portion 2 at the front, and a rim 3 is provided on the upper inner periphery of the bowl portion 2. Wash water is supplied to the rim 3 through the rim nozzle 4. In addition, the trap portion of the bowl portion 2 is provided with a jet nozzle 5 that ejects water (jet water) for inducing a siphon discharge flow into the trap portion. This trap part has a rising part that rises obliquely upward from the bottom of the pot part 2 and a rising part that continues to the rising part and falls downward, and this rising part is connected to a drain pipe (not shown). ing. This trap structure itself is well known.

  The end of the water supply pipe protrudes from the wall surface of the toilet room, and a stop cock 10 is attached to the end of the water supply pipe. This stop cock 10 is connected to the strainer 12 installed in the rear part of the Western-style toilet 1 via the water supply pipe 11 and the non-return valve 11a as an original flow path. The water that has passed through the strainer 12 can be supplied to the electric valve unit 20.

  The electric valve unit 20 drives a rim water supply valve 22 and a jet water supply valve 23 arranged inside by a motor 21 to supply a rim nozzle water supply pipe 24 as a rim flow path or a jet nozzle water supply pipe as a jet flow path. Water is supplied to 25. Note that a manual washing handle 28 is attached to the rotating shaft of the motor 21 so that the toilet can be used even during a power failure. The electric valve unit 20 is arranged in a cover casing (not shown).

  The electric valve unit 20 is provided with vacuum breakers 26 and 27 for breaking the negative pressure in the rim nozzle water supply pipe 24 and the jet nozzle water supply pipe 25. The vacuum breakers 26 and 27 are configured to open when negative pressure is generated in the water supply pipe 24 or 25 and to communicate the inside of the water supply pipe 24 or 25 with the atmosphere. Although not shown, check valves are respectively provided in the rim nozzle water supply pipe 24 and the jet nozzle water supply pipe 25.

  An inlet / outlet port 41 of the pressure accumulation tank 40 is connected to the water supply pipe 11 as the original flow path via a pipe 30. The pressure accumulation tank 40 has a pressure accumulation chamber 42 defined by a diaphragm 43. The atmospheric pressure chamber 44 above the diaphragm 43 is always in communication with the atmosphere through the opening 46. A spring 45 that presses the diaphragm 43 in the pressure accumulation direction is installed in the atmospheric pressure chamber 44.

The pressure accumulating chamber 42 of the pressure accumulating tank 40 is always in communication with the water supply pipe 11 via the pipe 30. Therefore, when both the valves 22 and 23 of the electric valve unit 20 are in the closed state, the water pressure in the water supply pipe 11 is the water supply static pressure of the water supply pipe (for example, 1.0 to 2.0 kgf / cm ² ). Due to this water pressure, water in the water supply pipe 11 flows into the pressure accumulation tank 40, and finally, water having a pressure equal to the hydrostatic pressure in the water supply pipe 11 is stored in the pressure accumulation tank 40.

When supplying the wash water to the Western-style toilet 1 after the stool (stool), the valve 22 is _first opened for a predetermined time (T ₁ ) as shown in FIG. The dirt adhering to is washed off to the trap part. While the valve 22 is opened and supplying water to the rim 3, water in the pressure accumulating tank 40 is added to the rim water supply. For this reason, the water supply pressure to the rim 3 is increased, water is sufficiently distributed to the end of the rim 3, and the entire bowl surface can be washed with water evenly.

When the predetermined time (T ₁ ) elapses, the valve 22 is closed, and during the predetermined standby time (T ₂ ), both the valves 22 and 23 are closed, and during this time, the pressure accumulation tank 40 is filled. Accumulated water is stored.

When this waiting time (T ₂ ) elapses, the jet water supply valve 23 opens for a predetermined time (T ₃ ), water is ejected from the jet nozzle 5, siphon is induced in the trap portion, and sewage is discharged to the drain pipe. The

  Since the accumulated water in the accumulator tank 40 is also added to the jet water from the jet nozzle 5, the amount of water jetted from the jet nozzle 5 and the water pressure increase, and a strong siphon discharge water flow is formed in the trap portion. . As a result, solids that are difficult to flow, such as paper floating on or near the water surface in the bowl, are also quickly discharged.

Thereafter, the jet water supply valve 23 is closed, and water supply to the jet nozzle 5 is stopped. Thereafter, the motor-operated valve unit 20 opens the rim water supply valve 22 for a predetermined time (T ₄ ) to supply water to the rim 3, and stores a required amount of trap water at the bottom of the toilet bowl. Thereafter, the rim water supply valve 22 is closed and both the valves 22 and 23 are closed, so that the accumulated water is stored in the accumulator tank 40.

  Thus, according to this embodiment, by adding the accumulated water in the accumulation tank 40 to the rim water supply, the bowl surface can be cleaned evenly. Further, by adding the accumulated water in the accumulator tank 40 to the water supply to the jet nozzle 5, it is possible to form a strong siphon discharge flow, and it is possible to reliably discharge paper that is difficult to flow. In addition, since this accumulated pressure water is added to the water flowing through the water supply pipe 11 and the water pressure in the water supply pipe 11 is sufficiently high just by adding a small amount, the amount of accumulated water to be added is small. It ’s enough. For this reason, the pressure accumulation tank 40 is sufficient with a small volume.

  Further, the motor-driven valve unit 20 is provided with a manual cleaning handle 28, and the same cleaning operation as described above can be performed even in the event of a power failure.

  In the above embodiment, the pipe 30 is branched from the upstream side of the check valve 11a, but may be branched from the downstream side of the check valve 11a.

  The accumulator tank 40 may be disposed inside the western-style toilet (for example, inside the pedestal) or may be disposed outside the western-style toilet.

(A) The figure is a perspective view of the Western-style toilet equipment provided with the toilet bowl washing | cleaning apparatus which concerns on embodiment, (b) is a block diagram of the motor operated valve unit. FIG. 5A is a system diagram of the cleaning water supply flow path, and FIG. 5B is a water supply timing chart of the cleaning water supply flow path.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Western style toilet bowl 2 Bowl part 3 Rim 4 Rim nozzle 5 Jet nozzle 10 Stop cock 11 Water supply pipe (original flow path)
12 Strainer 20 Electric valve unit 24 Water supply pipe for rim nozzle (Rim channel)
25 Water supply pipe for jet nozzle (jet flow path)
40 Accumulation tank

Claims (1)

An original flow path for supplying cleaning water to the toilet, a rim flow path branched from the original flow path, and a jet flow path;
An accumulator tank that is in constant communication with the original flow path;
A rim water supply valve provided in the rim flow path;
A toilet cleaning device comprising a jet water supply valve provided in the jet flow path,
Upon toilet flushing, firstly the rim water supply valve a predetermined time (T ₁₎ is opened, then allowed to storing water while accumulating pressure tank by closing the rim water supply valve a predetermined waiting time (T _2), said stand time (T ₂₎ predetermined time the jet water supply valve after the elapse of (T ₃₎ is opened, after the closing of the jet water supply valve, the predetermined time (T ₄₎ by a valve control Ru is opened the rim water supply valve A toilet cleaning device comprising means.

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