JP4432114B2 - Western-style flush toilet pump unit - Google Patents

Description

  The present invention relates to a Western-style flush toilet, and more particularly to a pump unit used in a siphon-jet flush toilet capable of discharging flush water from a rim water passage and the jet hole.

  Conventionally, it is formed on the peripheral edge of the upper opening of the toilet body, and it is opposed to the rim water passing part that allows the wash water to flow down the inner wall of the toilet body to wash the inside of the toilet body, and the trap inlet formed at the bottom of the toilet body. There is a Western-style flush toilet equipped with a zet hole that opens to a position where the water is discharged and discharges the washing water toward the trap inlet to forcibly cause a siphon phenomenon to discharge filth and the like.

  In such flush toilets, flush toilets having a configuration in which a low tank for storing flush water is abolished to improve appearance and water can be directly supplied from the water pipe to the rim water passing portion and the jet hole are also known. ing.

  Such a tankless flush toilet is smart and luxurious because there is no tank, but it is difficult to install because the washing flow rate required to discharge filth cannot be obtained where the water supply pressure is low. There was a problem.

  Therefore, a flush toilet equipped with a configuration that can sufficiently wash the inside of the toilet bowl even when the water pressure is low has been proposed for the purpose of enabling installation as a tankless tank even when the water pressure is not sufficient.

  For example, a water supply pipe that is connected to a water pipe and can supply the water in the water pipe as cleaning water, and a cleaning means that is connected to the water supply pipe and can wash the toilet bowl main body with cleaning water, is fixed to the toilet main body. There is a cover provided with a pressurizing pump that can pressurize the wash water supplied from the water supply pipe and supply it to the toilet body (see Patent Document 1, for example).

There is also a tankless flush toilet equipped with a storage tank in the toilet body that communicates with the jet hole and a pump that pumps the water in the storage tank to the jet hole as washing water. It has been. The storage tank can be stored in the tank when communicating with the rim water passing portion and supplying water to the rim water passing portion (see, for example, Patent Document 2).
JP 2003-138623 A Japanese Patent No. 2800421

  However, since the flush toilet disclosed in Patent Document 1 has a structure in which a pump is directly attached to a water supply pipe connected to a water pipe, when the pump is driven, for example, another faucet terminal branched from the water pipe There is a possibility that the water supply capacity to the water supply may be reduced, and there is a risk of inconvenience other users when a plurality of flush toilets are attached or users of other faucet terminals sharing a water pipe.

  Further, in the flush toilet disclosed in the above-mentioned Patent Document 2, since the washing water that is pumped and pumped to the jet hole is stored water in the tank, there is no fear that the above-mentioned problem occurs, but water is supplied to the rim water passing portion. Since water is also sometimes stored in the tank, the flow rate for rim water flow may be reduced, and it is difficult to control the flow rate. Further, when the storage tank and the pump are incorporated in the toilet body, the maintenance of the pump is particularly troublesome and may take time. In addition, for example, it has been extremely difficult to retrofit these to an existing flush toilet.

  An object of the present invention is to provide a flush toilet that can solve the above-described problems.

  In this invention of Claim 1, it connects with a water pipe, the water supply pipe which can supply the water in this water pipe as washing water, the piping for rims which supplies washing water to the rim of a Western-style toilet body, A water supply pipe for a Western-style flush toilet that includes a water supply pipe for supplying cleaning water to the trap, and supplies the cleaning water supplied from the water supply pipe to the pipe for the rim and the pipe for the jet in a predetermined order. A Western-style flush toilet pump unit connected to the tank, the pump unit comprising a tank for storing the wash water, a pump for ejecting the stored wash water, and a control means for controlling the drive of the pump. The control means is connected to the Western style flush toilet and receives a washing operation signal. Based on the inputted washing start signal, the control means drives the pump to eject water in the tank, and during the washing operation. Disposing a pump unit for a Western style flush toilet, wherein the pump is stopped and water from the water pipe is stored in the tank, and then the pump is driven again to eject the water in the tank. did.

  In the present invention according to claim 2, the Western-style flush toilet bowl supplies cleaning water from the rim piping at the start of cleaning, then supplies cleaning water from the jet piping, and then supplies cleaning water from the rim piping. The control means stops the pump after supplying the cleaning water from the first rim pipe, stores the water from the water pipe in the tank, and then drives the pump again to store the water in the tank. A Western style flush toilet pump unit characterized in that water is supplied from a pipe for a jet.

  In the present invention according to claim 3, the Western-style flush toilet bowl supplies cleaning water from the rim piping at the start of cleaning, then supplies cleaning water from the jet piping, and then supplies cleaning water from the rim piping. The control means stops the pump after supplying cleaning water from the jet pipe, stores the water from the water pipe in the tank, and then drives the pump again to drain the water in the tank. A Western-style flush toilet pump unit that is supplied from a rim pipe.

  According to a fourth aspect of the present invention, in the flush toilet according to any one of the first to third aspects, the tank is provided with a water level detecting means, and the control means detects the water level predetermined water level by the water level detecting means. The pump unit for a Western-style flush toilet is characterized by stopping the pump until.

  In this invention of Claim 5, the water supply pipe connected with a water pipe and which can supply the water in this water pipe as washing water, the piping for rims which supplies washing water to the rim of a Western-style toilet body, A Western-style flush toilet that supplies cleaning water supplied from a water supply pipe to the rim piping and the jet pipe in a predetermined order. The pipe includes a tank for storing cleaning water and a pump for ejecting the stored cleaning water, and drives the pump based on a cleaning operation to eject water in the tank, and the cleaning operation is in progress Control means for stopping the pump at the time of switching the supply between the rim pipe and the jet pipe and storing the water from the water pipe in the tank, and then driving the pump again to eject the water in the tank. To have prepared It is a Western style flushing toilet of the symptoms.

  (1) In the present invention described in claim 1, a water supply pipe connected to a water pipe and capable of supplying the water in the water pipe as cleaning water, a rim pipe for supplying cleaning water to the rim of the Western-style toilet body, and Western style A Western-style flush toilet that is equipped with a jet pipe for supplying cleaning water to the trap of the toilet body, and that supplies the cleaning water supplied from the water supply pipe to the rim pipe and the jet pipe in a predetermined order for cleaning. A Western-style flush toilet pump unit connected to the water supply pipe, the pump unit comprising a tank for storing cleaning water, a pump for ejecting the stored cleaning water, and a control means for controlling driving of the pump The control means is connected to the Western-style flush toilet and receives a washing operation signal, drives the pump based on the inputted washing start signal and ejects water in the tank, and washing operation The pump unit for a Western style flush toilet, wherein the pump is stopped and water from the water pipe is stored in the tank, and then the pump is driven again to eject the water in the tank. Even when the pump is driven as compared with a pump unit having a structure in which a pump is directly attached to a water pipe, there is no possibility that the water supply capacity to other faucet terminals will be reduced. Therefore, when a plurality of flush toilets are attached, there is no risk of inconvenience to other toilet users or users of other faucet terminals sharing a water pipe.

  (2) In the present invention as set forth in claim 2, the Western-style flush toilet bowl supplies cleaning water from the rim piping at the start of cleaning, then supplies cleaning water from the jet piping, and then cleaning from the rim piping. Water is supplied, and the control means stops the pump after supplying cleaning water from the first rim pipe, stores water from the water pipe in the tank, and then drives the pump again. Since the water in the tank is supplied from the pipe for the jet, the time for supplying and storing the water to the tank can be sufficiently secured, and the required capacity of the tank can be reduced accordingly. As a result, the tank installation space can be reduced, so even if combined with a smart and high-quality tankless flush toilet, the product image will not be spoiled.

  (3) In the present invention described in claim 3, the Western-style flush toilet bowl supplies cleaning water from the rim piping at the start of cleaning, then supplies cleaning water from the jet piping, and then cleaning from the rim piping. The control means is for supplying water, and the control means stops the pump after supplying cleaning water from the jet pipe, stores the water from the water pipe in the tank, and then drives the pump again to drive the inside of the tank. Therefore, sufficient time for supplying and storing water to the tank can be secured, and the required capacity of the tank can be reduced accordingly.

  (4) The present invention described in claim 4 is characterized in that the tank is provided with a water level detection means, and the control means stops the pump until the water level detection means detects a predetermined water level. As a result, it is possible to detect the necessary amount of water in the tank necessary for cleaning, and if the pump is driven after detection, a constant amount of cleaning water can be always supplied, so that stable cleaning performance can be ensured.

  (5) In the present invention according to claim 5, a water supply pipe connected to a water pipe and capable of supplying the water in the water pipe as washing water, a rim pipe for supplying washing water to the rim of the Western-style toilet body, A Western-style flush toilet comprising a jet pipe for supplying cleaning water to the trap of the Western-style toilet body, and supplying the cleaning water supplied from the water supply pipe to the rim pipe and the jet pipe in a predetermined order for cleaning. The water supply pipe includes a tank for storing the cleaning water and a pump for ejecting the stored cleaning water, and drives the pump based on a cleaning operation to eject the water in the tank and Western-style water washing characterized by comprising control means for stopping the pump in the middle of operation to store water from the water pipe in the tank, and then driving the pump again to eject the water in the tank This is a type toilet And pump unit, a control unit that drives the pump to eject water in the tank, a set of control set in the control unit, it is possible to form a tankless toilet which can sufficiently filth discharging.

  The configuration of the present invention includes a rim water passing portion formed on the periphery of the upper opening of the toilet body, and a jet hole opened toward the trap inlet formed at the bottom of the toilet body, the rim water passing portion and the jet A flush toilet capable of discharging flush water from each of the holes, a flush water supply means which is housed integrally in the flush toilet body, and can selectively supply water to the rim water passage and the jet hole, and flush water A tank for storing cleaning water, a pump for ejecting the stored cleaning water, and a tank between an integrated toilet unit configured with a control unit that controls the supply means, and a water supply pipe communicated with the water pipe A water supply valve for supplying water, a water level detection means for detecting the current water level, a pump drive, a control part for controlling the drive of the water supply valve in synchronization with the water level detection means, and a control part for taking in a water level detection signal, User cleaning signal A control unit which is input is obtained by arranging the pump unit with integrally.

  In other words, even if the water supply pressure is low, water from the water pipe is supplied to the tank so that the filth can be discharged reliably by securing a sufficient amount of water for washing. When activation is detected, the water stored in the tank is forcibly pumped to the toilet using a pump. The water supplied from the water source to the water pipe is not limited to tap water but may be middle water.

  The washing water supply means can be constituted by a combination of a constant flow valve attached to the water supply pipe, an on-off valve and a flow path switching valve arranged on the downstream side thereof, and this water supply pipe together with a negative pressure release valve and the like The unit can be provided as a unit, and this unit can be housed in the toilet body as a valve unit.

  In this way, a plurality of valve mechanisms are packed together in a compact manner in the toilet bowl body or in the local cleaning device cover, so that the mechanisms such as the valves are not exposed and the toilet room where the flush toilet is installed, etc. It does not impair the aesthetics and improves cleanability. Moreover, since it is unitized compactly, even if it is stored in the toilet body, the entire toilet does not increase in size, and there is no risk of impairing the smart appearance of the flush toilet itself.

Further, in the present embodiment, water supply control means for controlling water supply at a predetermined timing is provided to the rim water passing portion and the jet hole so that toilet flushing can be performed efficiently with respect to the cleaning water supply means. ing.
Because this water supply control means is also housed in the toilet bowl body or in the local cleaning device cover,
Like the washing water supply means, there is no risk of impairing the smart appearance of the flush toilet itself.

  On the other hand, the pump unit of this embodiment is also provided with pump water supply control means. This pump water supply control means detects an open signal to an on-off valve of a cleaning water supply means, which will be described later, and uses it as a trigger to send an activation signal to the pump to start driving. That is, a signal supplied to the water supply control means provided in the toilet body is detected as a user's washing activation signal, and simultaneously with the detection, an activation signal is transmitted to the pump to drive the pump.

  When the pump is driven, water in the tank is ejected to supply water to the cleaning water supply means. On the cleaning water supply means side, an electromagnetic on-off valve 22 configured in the cleaning water supply means based on the cleaning start signal. At the same time, the water supply switching is performed to supply the flow path switching valve to the rim piping or the jet piping, and the rim cleaning, the jet cleaning, and the water sealing are sequentially performed.

  From the moment the pump is driven, the amount of water in the tank that is used continues to drop from a predetermined water level position (full water position or initial position).

  A water supply valve is integrally formed above the pump unit in order to replenish the used water. This water supply valve is connected to the pump water supply control means by a control line such as a connector or a harness.

  Similarly, the water level detection means for detecting the water level state in the tank is also integrally formed above the pump unit, and the pump water supply control is connected by a control line such as a connector or a harness.

  This water supply valve is designed to operate in synchronization with the water level detection means. When the pump water supply control means detects an OFF signal of the water level detection means (a state where the water in the tank is not full), it outputs an open signal to the open / close valve of the water supply valve and starts water discharge. When the ON signal of the water level detection means (the water in the tank is full) is detected, a closing signal is output to the on-off valve to stop water discharge.

  Therefore, when the pump is driven and the water in the tank is discharged to the toilet bowl, the water level starts to drop immediately, so the water level detection means is turned off, the water supply valve is opened, and the tank is replenished with water. It becomes. Water is supplied into the tank until the water level detecting means is turned on.

  The synchronous control of the water supply valve, the water level detection means, and the pump water supply control means is an important control for reducing the size of the tank.

  In this embodiment, after the first rim cleaning, the pump drive is temporarily stopped, the water supply valve is opened, and the water from the water pipe is stored in the tank. This storage is continued until the water level detection means is turned on. That is, water is supplied until the tank recovers to a predetermined water level. After recovering to the predetermined water level, the pump is driven again to supply the water in the tank from the pipe for the jet, so that the siphon is raised and the filth is transported, and the water is further supplied to the rim pipe for the ball portion. Complete the sump.

This pump control stops the pump, opens the water supply valve, supplies the water to the specified water level in the tank, recovers the pump, drives the pump again, and performs subsequent cleaning. I am letting.

  On the upstream side of the water supply valve, a constant flow valve for controlling the water to a constant flow rate is configured. The flow rate of the constant flow valve is set to flow slightly less than the discharge flow rate of the pump. This is because if the amount of inflow into the tank is larger than the pump discharge flow rate, the tank will always be full of water, and if that state continues, there will be a risk of affecting the strength of the tank.

  In addition, when an overflow pipe described later is installed, the water in the tank overflows every time it is used, and waste water is always generated. Therefore, the inflow amount into the tank is set to be constant while the pump is driven by the operation of the constant flow valve.

  As described above, the tank is provided with an overflow pipe. The opening end of the overflow pipe is attached to the tank so as to have an opening portion at least above the ON-OFF contact switch of the water level detection means. The other end of the overflow pipe is connected with a soft tube or the like so as to guide the overflow water to the ball surface opening of the toilet bowl.

  This overflow pipe is designed to prevent water from flowing into the tank without causing strong damage to the tank when water exceeds the expected level due to a water supply valve failure or constant flow valve failure. The purpose is to discharge.

  Moreover, the reason why the opening end of the overflow pipe is attached so as to open above the water level detection means is that it does not hinder the operation of the water level detection means during normal operation and the ON / OFF control of the water supply valve.

  The overflow pipe also serves as an air inlet, separately from the above purpose. That is, the pump is driven when toilet flushing is performed, but the pump pumps the water in the tank to the toilet side with a strong force, so that the tank can be in a negative pressure state due to suction. Since this negative pressure state can occur every time the pump is driven, there are concerns about the durability and long-term reliability of the tank. However, the other end of the overflow pipe is opened and attached to the ball surface of the toilet bowl, and even when the atmosphere is introduced from here and the water in the tank is pumped intensely when the pump is driven, the tank has a negative pressure. It is also responsible for keeping the tank safe.

  Hereinafter, embodiments of the present invention will be described more specifically based on the drawings. Note that the flush toilet according to the present embodiment is a Siphon Zet type Western flush toilet. 1 is a perspective view from the left front of the flush toilet and pump unit according to the present embodiment, FIG. 2 is a schematic explanatory view of the flush toilet and pump unit, and FIG. 3 is from the diagonally left rear of the flush toilet and pump unit. 4 is an explanatory diagram in which a pump unit, a valve unit, and piping are arranged in the perspective view of FIG. 3, FIG. 5 is an explanatory diagram of the pump unit, and FIG. 6 is an oblique view of the flush toilet and the pump unit from the diagonally right front. FIG. 7 is a washing time chart of the flush toilet and the pump unit, FIG. 8 is another embodiment of the washing time chart of the flush toilet and the pump unit, and FIG. 9 is another embodiment of the cleaning time chart of the flush toilet and the pump unit.

  As shown in FIGS. 1 and 2 to 4, the flush toilet 1 is provided with a toilet seat 11 that can be freely opened and closed at the upper surface opening of the toilet body 10, and an openable and closable seat on the toilet seat 11. A toilet lid 12 is provided, and a functional part casing 13 is provided at the rear of the toilet body 10. In this functional part casing 13, a local cleaning device (not shown) and a valve unit 2 described later are accommodated.

  As shown in FIG. 2, the toilet body 10 is partitioned into a bowl portion 14 and a trap drainage channel 15 by a partition wall 16, and a rim portion 17 is formed on the upper peripheral edge of the bowl portion 14. A rim water passing portion 4 is formed on the slightly rear side of 17. 41 is a rim water passage opening.

  In addition, the trap drainage channel 15 has a substantially inverted U shape so as to connect a trap inlet 15a formed in the lower rear part of the bowl portion 14 and a drainage port 15b opened substantially at the bottom center of the toilet body 10. Is formed. Reference numeral 15c denotes a dam part which is the uppermost part of the trap drainage channel 15, and 15d is a straight pipe part which forms the downstream side of the dam part 15c.

  Moreover, the bottom part of the bowl part 14 is provided with the jet hole 51 which injects washing water toward the said trap inflow port 15a in the position facing the said trap inflow port 15a. Reference numeral 5 denotes a water pipe for a jet that is disposed in the toilet body 10 and is formed in a substantially J-shape, and is provided with a jet nozzle 51a that opens the jet hole 51 at the tip.

  In the flush toilet 1 according to the present embodiment, in the above configuration, a water supply valve 6a is connected in communication with a water conduit 6 that is connected in communication with the water source 3, and the water supply valve 6a, a tank 71 for storing water, and a tank 71 The pump unit 7 including the pump 72 that supplies the stored water to the valve unit 2 is characterized.

  That is, the water conduit 6 is connected to the water source 3 piped facing the wall W (see FIG. 2) of the toilet room Q from the outside, and the tip of the water conduit 6 is connected to the water supply valve 6 a of the pump unit 7. .

  On the other hand, a water conduit R3 is extended from the upper wall 71d through a pump 72 attached to the tank 71, and the end thereof is connected to a water supply pipe R0 to which the valve unit 2 is attached.

  Here, as shown in FIG. 2, the valve unit 2 disposed in the functional part casing 13 of the toilet body 10 includes a constant flow rate portion 21 and a constant flow rate portion 21 from the upstream side of the water supply pipe R0. A solenoid-type electromagnetic solenoid opening / closing valve 22 and the flow path switching valve 23 arranged in order on the downstream side, and two downstream water supply pipes extending from the flow path switching valve 23 and provided with a negative pressure breaking valve 24, respectively. It is constructed by distracting.

  Then, the water conduit R1 is connected to one of the downstream water supply pipes, and the water conduit R2 is connected to the other, and the rim water conduit 42 forming the tip side of the water conduit R1 is extended into the rim water passage portion 4, A rim nozzle 43 attached to the tip of the rim water pipe 42 is made to face the rim water opening 41. On the other hand, the leading end side of the water conduit R <b> 2 is extended to the water passage 5 for the jet and connected to the jet hole 51 attached to the front end of the water passage 5 for the jet. In FIG. 2, reference numeral 61 denotes a water stop plug provided in the water conduit 6, and includes a water stop valve 61a and a filter 61b. Moreover, the constant flow part 61c is formed in the water stop cock part 61 substantially integrally, and controls the water which passed 61 to a fixed flow rate. Thereby, even if the feed water pressure fluctuates, the tank 71 is supplied with a constant flow rate of water. Reference numeral 62 denotes a branch channel for branching from the water conduit 6 to supply water to the local cleaning device.

  With this configuration, even when the water supply pressure from the water source 3 is low, the water from the water conduit 6 is supplied to the tank 71, so that the water stored in the tank 71 is forcibly forced by the pump 72. In addition, it can be pumped to the jet hole 51, and a sufficient amount of washing water can be secured to discharge filth reliably.

  Next, the pump unit 7 will be described with reference to FIGS. 4 and 5. The pump unit 7 extends and links the water conduit 6 from the constant flow rate portion 61c. The pump 72 is installed below the substantially cylindrical tank 71.

  The pump 72 has a cylindrical shape. When the pump 72 is installed in the tank 71, an O-ring is disposed on the cylinder body of the pump and attached to the tank, thereby ensuring watertightness.

  The pump 72 is connected to a pump water supply control means 81 through a pump control line 80 in order to receive a start signal and control driving start or stop.

  A water supply valve 6 a is configured on the upper surface of the pump unit 7, and is connected by a pump water supply control means 81 and a water supply valve control line 82. The water supply valve 6a opens and closes a water channel by an electromagnetic valve, and operates in synchronization with a water level detection means (hereinafter referred to as a float switch) 74 described later. Therefore, the pump water supply control means 81 controls the water supply valve 6 a according to the input state of the water level detection means 74 to supply water into the tank 71 and stop water supply.

  The float switch 74 is configured on the upper surface of the pump unit 7. The float switch 74 is connected by a pump water supply control means 81 and a float switch control line 83. Further, the water level in the tank 71 can be detected by turning the float switch 74 on and off.

  Specifically, when the float switch 74 is OFF, the pump water supply control means 81 of this system outputs an ON signal to the water supply valve 6a and opens the electromagnetic valve. On the other hand, when the float switch 74 is ON, an OFF signal is output to the water supply valve 6a, and the solenoid valve is closed. This is because when the water in the tank 71 is at a predetermined water level, the water supply is stopped, and when the water falls from the predetermined water level, the water is supplied immediately, so that the water can be replenished in the tank 71 as quickly as possible. This is to prevent the tank 71 from becoming empty.

The pump water supply control means 81 is installed below the tank 71. Further, as a driving power source for the pump 71, the water supply valve 6a, the float switch 74, and the pump water supply control means 81, a general-purpose 100V power supply is used, so that the outlet 90 is extended from the pump water supply control means 81. .
Further, as a trigger for starting driving of the pump 71, it is necessary to receive a user's cleaning start signal. Therefore, in order to take the signal into the pump water supply control means 81, the water supply control means 86 in the functional section casing 13 is connected to the control means connecting line 89.

An overflow pipe 84 is attached to the substantially cylindrical tank 71 from the bottom surface of the tank 71 upward. The lower end of the overflow pipe 84 is connected to a water conduit 85 (such as a hose), and the other end of the water conduit 85 is installed so as to open to the ball portion 14 of the toilet bowl. In addition, about the attachment to a toilet bowl, it is fixing with the suction cup or the adhesive tape.
This overflow pipe 84 is for letting it escape to the ball surface of the toilet bowl through this overflow pipe 84 when the water supply valve 6a described above fails or the constant flow rate portion 61c fails. Further, as described above, the overflow pipe 84 also serves as a safety air introduction part for releasing the negative pressure in the tank 71.

  In addition, a substantially cylindrical tank lid 71 a having a diameter substantially the same as the tank diameter is formed on the upper portion of the tank 71. This is a cover that covers the water supply valve 6a, the float switch 74, the water supply pipe connecting member and the like attached to the upper surface of the tank. As a result, a clean appearance can be realized without the parts being exposed.

  Here, the water supply control method performed by the pump water supply control means 81 and the water supply control means 86 will be described with reference to FIGS.

  The water supply control means 86 includes a timer, and basically controls to supply water to the rim water passing portion 4 and the jet hole 51 at a predetermined timing as shown in FIG. . Therefore, the amount of water supplied is determined by the constant flow rate unit 21 that controls the flow rate and the timer.

First, a predetermined amount of stored water exists in the tank 71 of the pump unit 7 in the initial standby state. Therefore, in this state, the float switch 74 is in the ON state.
When the user of the flush toilet 1 executes a washing operation by, for example, pressing a washing switch (not shown) provided on the toilet body 10 or a remote controller, the pump water supply control means 81 is connected to the pump unit 7. The pump 72 is driven by outputting a drive signal.

At the same time, the water supply control means 86 outputs a drive signal for opening the electromagnetic solenoid on / off valve 22 and the flow path switching valve 23 of the valve unit 2 (t1), and makes the water supply pipe R0 and the rim water communication pipe 42 communicate with each other. Is supplied to the rim water passing portion 4. That is, the water path at that time is pumped to the pump 72 → the water supply pipe R0 → the constant flow portion 21 → the electromagnetic solenoid on / off valve 22 → the flow path switching valve 23 → the rim water passage portion 4 → the rim water passage opening 41, and the bowl The water discharged into the part 14 starts washing while turning the inner wall of the bowl part 14.
At this time, the pump unit 7 is driven, the water level in the tank 71 is lowered, and the float switch 74 is turned off. That is, when OFF is detected, the water supply valve 6 a is turned on, water discharge is started, and the tank 71 is replenished. The constant flow rate portion 21 and the constant flow rate portion 61c are set so that the flow rate relationship at this time is such that the pump water discharge amount ≧ the water supply valve water discharge amount.

  When a predetermined time sufficient for rim cleaning elapses, the pump water supply control means 81 temporarily stops driving the pump 72 (t2). As described above, the amount of water discharged from the pump is greater than or equal to the amount of water discharged from the water supply valve. Therefore, at the moment of stopping, the water in the tank 71 is lower than the predetermined water level. That is, the water supply valve 6a discharges water until the float switch 74 is turned on, and on the other hand, the drive of the pump 72 is stopped until the water in the tank 71 becomes full. Thus, by incorporating a process of temporarily stopping during washing and supplying water to the required amount (recovered to a predetermined water level) in the tank 71, the capacity of the tank 71 can be reduced to about 2 to 3 liters. .

  On the other hand, when the driving of the pump 72 is temporarily stopped, the water supply control means 86 outputs a drive signal to the flow path switching valve 23 of the valve unit 2 to connect the water supply pipe R0 and the water pipe 5 for the jet. Moreover, the valve unit 2 maintains the state.

  Subsequently, the pump water supply control means 81 outputs a drive signal to the pump 72 at the moment when the above-described float switch 74 is turned ON by the water discharge of the water supply valve 6a (the predetermined water level is restored) to start the jet cleaning. (T3). That is, at this time, the pump 72 is driven to supply water into the toilet. At that time, the water path is as follows: pump 72 → water supply pipe R0 → constant flow rate portion 21 → electromagnetic solenoid on / off valve 22 → flow path switching valve. 23 → jet water pipe 5 → jet hole 51 in order, and negative pressure is generated in the trap drainage channel 15 by the wash water ejected from the jet hole 51 toward the trap inlet 15a. The reservoir water is drawn in, a siphon phenomenon is caused in the trap drainage channel 15, and zet cleaning is performed in which the filth flows out to the discharge port 15b.

  The amount of water required for such zet cleaning is approximately 20 liters / min, and the pump 72 is selected and installed so that it can discharge the amount of water.

  In addition, zet cleaning is started, the pump 72 is driven, and the water level in the tank 71 is lowered. At that time, the float switch 74 is turned off. The water supply valve 6 a starts water discharge and starts replenishment in the tank 71 at the stage where it is in the OFF state. This is the same as the control at the time of rim cleaning described above, and is useful control for reducing the tank capacity.

  The time required for this jet cleaning is determined in advance by a timer in the water supply control means 86, and when the predetermined time has elapsed (t4), the water supply control means 86 is in a state where the pump 71 continues to be driven. A drive signal is output to the flow path switching valve 23 of the unit 2 so that the water supply pipe R0 and the rim pipe 42 are communicated again. Thereby, the water in the tank 71 is supplied to the rim water passing portion 4 and seals the inside of the bowl portion 14 of the toilet body 10. In addition, the time required for this water sealing is also preset by the water supply control means 86, and water supply control is performed by time management using a timer.

  When the water sealing time elapses, the water supply control means 86 outputs a valve closing drive signal to the electromagnetic solenoid on / off valve 22, and at the same time, the pump water supply control means 81 stops driving the pump 72. This completes the water supply control to the toilet. (T5)

  On the other hand, since the pump 72 is always driven after the jet cleaning, and the water in the tank 71 is continuously discharged, the water in the tank 71 is lower than the predetermined water level. The float switch 74 is always OFF during this time, so that the water supply valve 6a is ON, and water is always supplied to the tank 71 while the pump 72 is driven. This tank water supply continues after the pump 71 is stopped, that is, after the completion of the water supply control, and continues until the water level recovers to the predetermined water level. Therefore, when the water supply valve 6a discharges water into the tank 71, the float switch 74 is turned ON, and the water supply valve 6a is stopped, the series of control of the pump unit 7 and toilet flushing is completed. (T6)

  As mentioned above, although this invention has been demonstrated through embodiment, this invention is not limited to the said embodiment.

For example, in the above description, the pump 72 is driven, and after the rim cleaning, the pump 72 is stopped until the water in the tank 71 recovers to a predetermined water level. However, as shown in FIG. Further, the control of the pump 72 may be stopped until the water in the tank 71 is restored to a predetermined water level after the jet cleaning.
Further, as shown in FIG. 9, the pump 72 is stopped during each process of rim cleaning, zet cleaning, and water sealing, and the next process is not advanced until the water in the tank 71 is restored to a predetermined water level. It is also possible to incorporate control. In this case, the tank capacity can be minimized, but there is a problem that the total time for one operation is the longest.

  Furthermore, although the flush toilet 1 described above has been described as a configuration including the pump unit 7 in advance, for example, the pump unit 7 can be retrofitted to an existing tankless flush toilet.

  When this pump unit is attached, a water supply pipe R3 connected to the pump unit 7 and the flush toilet 1, a constant flow rate portion 61c connecting the pump unit 7 and the stop cock 61, and the water conduit 6 are attached. Further, a connector 87 extended from the water supply control means 86 and a connector 88 extended from the pump water supply control means 81 are connected in order to capture a cleaning activation signal from the user. Further, by supplying 100V power as the power supply for the water supply control means 86 and the pump water supply control means 81, the pump unit can be retrofitted to the existing tankless toilet.

  If the water supply control is different when the existing tankless flush toilet and the pump unit are installed, install two controls in advance in the water supply control means so that they can be switched on-site with an external switch. If you do, you can respond immediately.

  Thereby, even if a tankless toilet is attached to a site where the water pressure is low, the tankless toilet can be used by connecting the pump unit without replacing the toilet itself.

The perspective view from the left front of the flush toilet and pump unit which concerns on this embodiment. Schematic explanatory drawing of the flush toilet and pump unit. The perspective view from the diagonally left rear of the flush toilet and pump unit. Explanatory drawing which has arrange | positioned the pump unit, the valve unit, and piping in the perspective view of FIG. Explanatory drawing of a pump unit. Explanatory drawing which has arrange | positioned the pump unit, the valve unit, and piping to the perspective view from the diagonally right front of the flush toilet and the pump unit. Cleaning time chart of the flush toilet and pump unit. The other embodiment of the washing time chart of the flush toilet and pump unit. The other embodiment of the washing time chart of the flush toilet and pump unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flush toilet 2 Valve unit 3 Water source 4 Rim passage part 5 Zet passage pipe 6 Water conduit 6a Water supply valve 7 Pump unit 21 Constant flow part 22 Electromagnetic switching valve 23 Channel switching valve 43 Rim nozzle 51 Zet hole 51a Zet nozzle 61c Flow rate section 71 Tank 72 Pump 74 Water level detection means or float switch 81 Pump water supply control means 86 Water supply control means

Claims (5)

A water supply pipe that is connected to a water pipe and can supply the water in the water pipe as cleaning water, a rim pipe that supplies cleaning water to the rim of the western-style toilet body, and a jet that supplies cleaning water to the trap of the western-style toilet body A Western-style flush toilet that is connected to the feed pipe of a Western-style flush toilet that supplies the washing water supplied from a water supply pipe to the rim pipe and the jet pipe in a predetermined order for cleaning. A pump unit comprising a tank for storing wash water, a pump for ejecting the stored wash water, and a control means for controlling the drive of the pump, the control means comprising the Western style flush toilet A cleaning operation signal is input and the pump is driven based on the input cleaning start signal to eject water in the tank, and the pump is stopped during the cleaning operation to stop the water pipe. Et of water was stored in the tank, western flushing toilet pump unit, characterized in that subsequent to driving again said pump for ejecting water in the tank. The Western-style flush toilet supplies cleaning water from the rim piping at the start of cleaning, then supplies cleaning water from the jet piping, and then supplies cleaning water from the rim piping. After supplying cleaning water from the first rim pipe, the pump is stopped, water from the water pipe is stored in the tank, and then the pump is driven again to supply the water in the tank from the jet pipe. The Western-style flush flush toilet pump unit according to claim 1. The Western-style flush toilet supplies cleaning water from the rim piping at the start of cleaning, then supplies cleaning water from the jet piping, and then supplies cleaning water from the rim piping. The pump is stopped after supplying the cleaning water from the pipe for the jet, the water from the water pipe is stored in the tank, and then the pump is driven again to supply the water in the tank from the pipe for the rim. A pump unit for a Western style flush toilet according to claim 1. The said tank is provided with a water level detection means, and the said control means detects the water level predetermined water level, and the said control means drives or stops the said pump. Western style flush toilet pump unit. A water supply pipe that is connected to a water pipe and can supply the water in the water pipe as cleaning water, a rim pipe that supplies cleaning water to the rim of the Western-style toilet body, and a jet that supplies cleaning water to the trap of the Western-style toilet body In a Western-style flush toilet that supplies and cleans wash water supplied from a water supply pipe to the rim pipe and the jet pipe in a predetermined order.
The water supply pipe includes a tank for storing cleaning water and a pump for ejecting the stored cleaning water, and drives the pump based on a cleaning operation to eject water in the tank, and in the middle of a cleaning operation The pump is stopped when the supply of the rim pipe and the jet pipe is switched, the water from the water pipe is stored in the tank, and then the pump is driven again to eject the water in the tank. A Western-style flush toilet comprising a means.

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