JP4241091B2 - Toilet bowl cleaning device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
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.
[0002]
[Prior art]
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.
[0003]
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 of the toilet bowl in order to powerfully discharge dirt and paper from the toilet bowl. The method is adopted.
[0004]
By the way, when water is supplied to the toilet bowl by tap water pressure, the wash water cannot be supplied to the toilet bowl by a sufficient water force if the tap water pressure is low. As a countermeasure, JP-A-7-300891 discloses that a pressure accumulator is provided in the middle of a water pipe.
[0005]
[Patent Document 1]
JP-A-7-300891 [0006]
[Problems to be solved by the invention]
I. In the Western-style toilet equipment disclosed in JP-A-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.
[0007]
A first object of the present invention is to provide a toilet cleaning device having a sufficient discharge capacity even when a small pressure accumulator is used.
[0008]
II. Further, in the toilet cleaning device of the same publication, even when the supply water pressure fluctuates and becomes high, the accumulated water is supplied to the Western-style toilet, so an excessive load is applied to the packing of the Western-style toilet etc. There is a fear.
[0009]
The second object of the present invention is to provide a toilet cleaning device in which the accumulated water is supplied to the jet water only when necessary.
[0010]
[Means for Solving the Problems]
The toilet bowl cleaning device of the present invention has rim water supply means for supplying water to the rim of a toilet bowl of a Western-style toilet and jet water supply means for supplying water to a jet hole facing the trap portion, and the rim water supply means is supplied from a water pipe. in the toilet flushing apparatus is intended to supply water to the rim by the water pressure, and the jet assisting means for replenishing the accumulator water and accumulator in the accumulator to the jet water supply means, the water supplied to the rim water hand stage flow or A toilet flushing device comprising a control means for detecting the water pressure by the detection means and operating the jet assisting means when the detected value is equal to or lower than a predetermined value. The rim water supply means is operated for a predetermined time, and then the jet water supply means is operated for a predetermined time. When the detection value of the detection means is not more than the predetermined value, the jet water supply means is activated. It is characterized in that only the pressure accumulating water arrival time period until the jet water supply means by prior to start operation jet assisting means from the accumulator than.
[0011]
In the toilet cleaning device of the present invention, only water (preferably a part of this water) ejected from the jet hole is accumulated by the accumulator, and the rim water supply does not accumulate, so the volume of the accumulator is small. It ’s enough.
[0012]
In the present invention, when the water supply source pressure is high and jet assistance by the pressure accumulator is not required, the accumulated water is not replenished to the jet water from the pressure accumulator, so that excessive water pressure is applied to the packing and valves of the jet flow path. There is no. Thereby, these durability improves. Also, since it is used when the flow rate and pressure are low, useless water is not used.
[0013]
In the toilet bowl cleaning device of the present invention, when flushing the toilet bowl, first, water is poured into the rim for a predetermined time to wash away the bowl surface deposits, and then water is ejected from the jet holes to form a siphon discharge water stream in the trap portion.
[0014]
In the present invention, to detect the flow rate or water pressure at the rim water supply operation, so as to supply the jet water by the flow rate or water pressure accumulator when less than a predetermined value.
[0015]
In the present invention, when replenishing accumulator water jet water to replenish the accumulator water jet cleaning beginning. In this way, it is possible to form a powerful jet discharge water flow from the beginning. In this case, considering the arrival delay of the accumulating water from the accumulator to the jet water supply path, only the delay time period than the jet water supply starts operating, Ru is preceded accumulator water release operation of the pressure accumulator.
[0016]
When supplying the 蓄 divider the accumulator water to the jet channel may be at once the total amount released the accumulator water drainage valve from the accumulator as a fully open, based on the detection result of the detecting means, the opening and the opening of the water discharge valve The valve duration time may be controlled to control the discharge flow rate or the discharge duration time of the accumulated water.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments and reference examples will be described below with reference to the drawings. FIG. 1A is a perspective view of a Western-style toilet facility equipped with a toilet cleaning device according to the embodiment, FIG. 1B is a configuration diagram of the motor-operated valve unit, and FIG. 2 is a system diagram of a cleaning water supply flow path. FIG. 3 is a water supply timing chart of the cleaning water supply channel.
[0018]
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.
[0019]
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 a strainer 12 installed at the rear part of the Western-style toilet 1 via a water supply hose 11. The water that has passed through the strainer 12 can be supplied to the electric valve unit 20, and can be supplied to the pressure accumulator 61 through the pipe 13 branched from the strainer 12. In addition, water can be supplied from a secondary side of the strainer 12 to a hot water tank (not shown) of the hot water washing apparatus of the human body part via another pipe (not shown). A cap 12 a is provided at the drain outlet at the bottom of the strainer 12.
[0020]
The electric valve unit 20 drives the valve devices 22 and 23 disposed therein by a motor 21 to supply water to the rim nozzle water supply pipe 24 or the jet nozzle water supply pipe 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).
[0021]
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.
[0022]
When supplying cleaning water to the Western-style toilet 1 after a stool (stool), first, the valve 22 is opened for a predetermined time, and the cleaning water is supplied to the rim 3 so that the dirt adhering to the bowl surface is washed off to the trap portion. Next, the valve 23 is opened for a predetermined time, water is ejected from the jet nozzle 5, a siphon is induced in the trap portion, and sewage is discharged to the drain pipe. Thereafter, the valve 22 is opened again for the required time, and trap water is stored.
[0023]
As shown in FIG. 2, the pipe 13 communicates with the inlet / outlet of the pressure accumulator 61 through a check valve 60. Further, the introduction / discharge port communicates with the jet nozzle 5 via the electromagnetic valve 62 and the pipe 63.
[0024]
In this embodiment, only the water pressure sensor 40 for detecting the water pressure (dynamic pressure) is provided on the primary side of the strainer 12. (The sensor 50 is used in a reference example which will be described later, and is not employed in this embodiment.) The detection signal of the sensor 40 is input to a control circuit (not shown). A signal is given to the electric valve unit 20 and the electromagnetic valve 62. Note that a flash switch signal provided in a remote controller or the like is also input to this control circuit.
[0025]
The accumulator 61 has a known structure in which the pressure-resistant outer shell container is partitioned into an air accumulator chamber and a water accumulator chamber by a stretchable elastic diaphragm. If the solenoid valve 62 is closed when the valves 22 and 23 are closed, water gradually flows into the pressure accumulator 61 due to the tap water pressure, and water having a pressure equal to the tap water pressure (static pressure) is accumulated. It is stored in 61. When the electromagnetic valve 62 is opened, the accumulated water in the accumulator 61 is supplied to the jet nozzle 5.
[0026]
The tap water pressure from the water pipe becomes a considerably low value due to a large amount of water discharge when the water pipe is thin. However, since water flows into the pressure accumulator 61 little by little, water can be stored in the pressure accumulator 61 at a water pressure substantially equal to the water supply source pressure. In this embodiment, sufficient discharge capacity can be obtained even if the water supply source pressure is about ² to 3 kg / cm ² .
[0027]
In the toilet flushing apparatus configured as described above, when the toilet flushing is started in response to the operation of the flush switch, the motor-operated valve unit 20 first opens the valve 22 for a predetermined time and supplies water to the rim nozzle 4 for a predetermined time as shown in FIG. And wash off any dirt on the toilet bowl surface. At this time, the valve 23 and the electromagnetic valve 62 are closed, water is supplied only to the rim nozzle 4, and water is not supplied to the jet nozzle 5.
[0028]
After stopping water supply to the rim nozzle 4, the valve 23 is opened, water is supplied to the jet nozzle 5 by direct pressure of tap water pressure, water is ejected from the jet nozzle 5, siphon is induced in the trap part, and the filth is combined with water Drain from the trap to the drain.
[0029]
In the reference example, the water supply pressure (water supply source pressure) from the water pipe before the start of the cleaning operation is monitored by the sensor 40, and the water supply source pressure is monitored at a predetermined pressure (for example, 0.7 kg / cm ² ( When the pressure is higher than the dynamic pressure)), the accumulated water in the accumulator 61 is not discharged, and jet water is ejected only by the water pressure.
[0030]
When the water supply original pressure is low, the solenoid valve 62 is opened together with the valve 23 being opened, and the accumulated water in the accumulator 61 is supplied to the jet nozzle 5. As a result, 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.
[0031]
Incidentally, the release of accumulating water in the accumulator 61 is relatively short, the solenoid valve 62 is closed before the valve 23. For this reason, the pressure accumulator 61 is sufficient with a small capacity.
[0032]
Thereafter, the valve 23 is closed, and the water supply to the jet nozzle water supply pipe 25 by the electric valve unit 20 is stopped. Thereafter, the motor-operated valve unit 20 opens the valve 22 for a predetermined time to supply water to the rim nozzle 4, and stores a required amount of trap water at the bottom of the toilet bowl. Thereafter, the accumulated pressure water is stored in the accumulator 61 because the valves 22 and 23 and the electromagnetic valve 62 are closed.
[0033]
Thus, according to this reference example , when the water supply original pressure is low, the accumulated water of the accumulator 61 is supplied to the jet nozzle 5, so that a strong siphon discharge flow can be formed. It becomes possible to discharge reliably.
[0034]
In this reference example , the accumulated water is replenished at the beginning of the opening of the valve 23 to form a strong jet water flow, and papers that are difficult to flow are discharged by a strong siphon flow from the beginning of siphon discharge. Therefore, the amount of accumulated water supplied from the pressure accumulator 61 can be reduced. Moreover, since the pressure accumulation water discharge | release time zone is shorter than the valve opening time zone of the valve 23, the pressure accumulator 61 needs to have a small volume.
[0035]
Next, this embodiment will be described. When the flow path from the pressure accumulator 61 to the jet nozzle 5 is longer than the flow path from the valve 23 to the jet nozzle 5, the opening timing of the electromagnetic valve 62 is set earlier than the opening timing of the valve 23. The water supply and the pressure-accumulated water supply from the electromagnetic valve 62 are configured to reach the jet nozzle 5 almost simultaneously .
[0036]
In the embodiment of this, since the monitoring water source pressure sensor 40, it is possible to determine in advance whether or not to open the solenoid valve 62 in the control circuit.
[0037]
However, the sensor 40 is used as a flow rate sensor, the flow rate when only the valve 22 is opened and rim cleaning is performed is detected, and when this flow rate is equal to or lower than the predetermined flow rate, it is determined that the supply water source pressure is low. The electromagnetic valve 62 may be opened at the time of jet cleaning, and when the flow rate is higher than a predetermined flow rate, it may be determined that the supply water source pressure is high, and the electromagnetic valve 62 may be left closed.
[0038]
In the reference example , the flow sensor 50 may be provided in the vicinity of the jet nozzle 5 instead of the sensor 40. In this case, at the time of jet cleaning, only the valve 23 is first opened. When the detected flow rate of the flow rate sensor 50 at this time is equal to or lower than the predetermined flow rate, the electromagnetic valve 62 is opened to supply the accumulated pressure water to the jet nozzle 5.
[0039]
Of course, both of the sensors 40 and 50 may be provided, and the necessity of opening the solenoid valve 62 may be comprehensively determined based on signals from these sensors.
[0040]
In the present invention, the flow rate adjustable valve provided in place of the openable solenoid valves 62, when the detected value of the sensor 4 0 is less than the predetermined value, the difference between the sensor detection value with a predetermined value (reference value) The valve opening degree may be controlled according to the size, and the discharge flow rate of the accumulated water may be controlled. For example, this difference may be proportional to the accumulated water discharge flow rate. Instead of or in conjunction with controlling the discharge flow rate, the discharge duration may be adjusted longer or shorter. That is, the accumulated water discharge duration time may be increased as the above difference increases.
[0041]
The present invention is not limited to the above embodiment, and may take other forms. For example, an on-off valve may be used instead of the check valve 60 and the valve may be opened only when water is stored in the pressure accumulator 61.
[0042]
【The invention's effect】
As described above, according to the present invention, even if the tap water pressure is low, a strong siphon discharge flow can be formed using the pressure accumulator. Further, according to the present invention, it is possible to reduce the volume of the pressure accumulator.
[Brief description of the drawings]
FIG. 1A is a perspective view of a Western-style toilet facility equipped with a toilet cleaning device according to an embodiment, and FIG. 1B is a configuration diagram of the motor-operated valve unit.
FIG. 2 is a system diagram of a cleaning water supply channel.
FIG. 3 is a water supply timing chart of a cleaning water supply channel.
[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 hose 12 Strainer 20 Electric valve unit 40,50 Sensor 61 Accumulator

Claims (2)

Rim water supply means for supplying water to the rim of the toilet bowl of the western style toilet, and jet water supply means for supplying water to the jet holes facing the trap part,
In the toilet cleaning device, the rim water supply means supplies water to the rim by tap water pressure from a water pipe.
Jet assisting means for replenishing the jet water supply means with accumulated water accumulated by an accumulator;
Detected by the flow rate or water pressure detecting means of water supplied to the rim water hands stage, and a control means for actuating the jet assisting means when the detected value is less than a predetermined value,
A toilet bowl cleaning device comprising:
The toilet bowl cleaning device first operates the rim water supply means for a predetermined time during the cleaning operation, and then operates the jet water supply means for a predetermined time,
When the detection value of the detection means is equal to or less than a predetermined value, the operation of the jet assisting means is started prior to the start of the operation of the jet water supply means by the accumulated water arrival time from the pressure accumulator to the jet water supply means. Toilet bowl cleaning device. Oite to claim 1, wherein the jet assisting means all SANYO to flow out via an on-off valve accumulator water from the accumulator,
When the detected value of the detecting means is less than or equal to the predetermined value, the jet assisting means increases the accumulated water discharge flow rate or lengthens the discharge time as the difference between the predetermined value and the detected value increases. toilet bowl cleaning device, characterized in der Rukoto controls so.

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