JP2011174255A - Toilet bowl water supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an amount of the water flowing to a bowl part side and a flow of the water flowing to a private part washing nozzle side from fluctuating by effectively utilizing a flow sensor. <P>SOLUTION: A water supply passage 1 to which water is supplied from a water source is branched into a main flow passage 2 communicating with the bowl part of a toilet bowl device and an auxiliary flow passage 3 communicating with the private part washing nozzle of the toilet bowl device. A main solenoid valve 5 is installed in the main flow passage 2. An auxiliary solenoid valve 7 is installed in the auxiliary flow passage 3. A flow sensor 9 is installed in the auxiliary flow passage 3 on the downstream side of the auxiliary solenoid valve 7. When water is supplied to the private part washing nozzle by opening the auxiliary solenoid valve 7, the flow of the water flowing in the auxiliary flow passage 3 is detected by the flow sensor 9. On the basis of the detected information, the auxiliary solenoid valve 7 is controlled during supply of water to the private part washing nozzle. On the basis of the information detected by the flow sensor 9 when water is supplied to the private part washing nozzle, the main solenoid valve 5 is controlled so that a predetermined amount of water is supplied to the bowl part when water is supplied to the bowl part by opening the main solenoid valve 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a toilet water supply device for supplying water to a toilet device.

  In the toilet device disclosed in Patent Document 1, a hot water cleaning device having a local cleaning function is provided in a toilet body having a bowl portion. In this toilet device, a water supply channel directly connected to the water supply is branched into a main flow channel leading to the bowl portion of the toilet device and a sub flow channel leading to the local cleaning mechanism, and the tap water is supplied to the bowl portion via the main flow channel. The tap water can be supplied to the local cleaning mechanism via the sub-flow path.

  By the way, the water pressure of the water supply which becomes a water source of a toilet device may differ for every installation place of a toilet device and use of a toilet device. For this reason, for example, when the solenoid valve provided in the water supply channel is opened for a certain period of time to supply water to the bowl part, the amount of water flowing to the bowl part side varies, and the cleaning effect is reduced or more than necessary. Water may be supplied to the bowl.

  In this respect, the toilet device of Patent Document 1 is provided with a flow sensor downstream of the electromagnetic valve of the water supply channel, and after opening the electromagnetic valve to start water supply to the bowl, the flow sensor supplies the bowl with the flow sensor. The solenoid valve is set to close when it is detected that the amount of water that has reached a certain amount. For this reason, the quantity of the water which flows into the bowl part side is stabilized.

JP 2004-353201 A

  Here, the flow sensor of Patent Document 1 is provided to stabilize the amount of water flowing to the bowl side, and it is preferable that this flow sensor be used more effectively. In addition, the pressure change of the water supply also affects the local cleaning mechanism connected through the sub-flow path, and there is a concern that the flow rate of water flowing to the local cleaning mechanism side changes according to the pressure change of the water supply. .

  The present invention has been made in view of the above circumstances, and can effectively prevent variation in the amount of water flowing to the bowl portion side and the flow rate of water flowing to the local cleaning nozzle side by effectively using the flow rate sensor. It is an object to provide a toilet water supply device.

  In order to solve the above-described problems, the toilet water supply device of the present invention branches a water supply channel to which water is supplied from a water source into a main channel that leads to a bowl portion of the toilet device and a sub-channel that leads to a local washing nozzle of the toilet device. A main electromagnetic valve is provided in the main flow path, a sub electromagnetic valve is provided in the sub flow path, a flow sensor is provided in a sub flow path downstream of the sub electromagnetic valve, and the sub electromagnetic valve is opened. The flow rate sensor detects the flow rate of the water flowing through the sub-flow path when supplying the local cleaning nozzle, and controls the sub electromagnetic valve when supplying the local cleaning nozzle based on this detection information. Based on the detection information detected by the flow sensor during nozzle water supply, the main solenoid valve is controlled so that a predetermined amount of water is supplied to the bowl portion when water is supplied by opening the main solenoid valve. Characterized by comprising a control unit that.

  In the present invention, the flow rate sensor can be effectively used to increase the accuracy of the flow rate of water flowing to the local cleaning nozzle side and the amount of water flowing to the bowl side.

It is explanatory drawing which shows the toilet bowl water supply apparatus of embodiment of this invention.

  Hereinafter, the present invention will be described with reference to the accompanying drawings. The toilet bowl water supply apparatus of this embodiment supplies water to the bowl part of the toilet apparatus and the local cleaning nozzle of the local cleaning mechanism of the toilet apparatus. In addition, the conventionally well-known general thing is used as a toilet device, for example, the thing provided with the warm water washing apparatus which has a local washing mechanism in the toilet bowl body provided with the bowl part is utilized.

  As shown in FIG. 1, the toilet water supply device of this embodiment includes a water supply channel 1. The upstream side of the water supply channel 1 is directly connected to a water supply serving as a water source (not shown).

  The water supply channel 1 is branched into two channels, a main channel 2 that leads to the bowl part and a sub-channel 3 that leads to the local cleaning nozzle. A water stopcock (not shown) is provided on the upstream side of the branch portion of the main flow path 2 and the sub flow path 3 of the water supply path 1, and water is stopped as necessary.

  The main flow path 2 is provided with a main electromagnetic valve 5 that opens and closes the main flow path 2 to switch the presence / absence of water supply to the bowl portion, and a pressure regulating valve 6 located on the downstream side.

  The sub flow path 3 is also provided with a sub electromagnetic valve 7 that opens and closes the sub flow path 3 to switch the presence / absence of water supply to the local cleaning nozzle, and a pressure regulating valve 8 positioned on the downstream side. The sub electromagnetic valve 7 is a valve whose opening degree can be adjusted. By adjusting the opening degree, the amount of water flowing per unit time, that is, the flow rate, can be changed by adjusting the opening degree. Further, on the downstream side of the pressure regulating valve 8 of the sub-flow channel 3, a heating unit comprising a flow rate sensor 9 for detecting the flow rate of water flowing through the sub-flow channel 3, a heater for heating the water flowing through the sub-flow channel 3, and the like. 10 is provided. Further, the toilet water supply device includes a control means 11 composed of a microcomputer for controlling the operations of the main solenoid valve 5 and the sub solenoid valve 7.

  A state where the stop cock is opened and the main solenoid valve 5 and the sub solenoid valve 7 are closed is a standby state. In this standby state, when the operation unit of the toilet device (not shown) is operated after the stool and the control unit 11 is instructed to start local cleaning, the control unit 11 opens the sub electromagnetic valve 7. Thereby, the water supplied from the water supply to the water supply channel 1 is supplied to the local cleaning nozzle through the sub-channel 3. This water is heated to an appropriate temperature by the heating means 10 and then sprayed from the local cleaning nozzle toward the local area of the toilet user, whereby local cleaning is performed. When the operation unit is operated and the control unit 11 is instructed to stop the local cleaning, the sub electromagnetic valve 7 is closed by the control unit 11 and the water supply to the local cleaning nozzle is stopped.

  Although the secondary flow path 3 is provided with a pressure regulating valve 8 that keeps the flow rate substantially constant when a change in water pressure occurs on the primary side, the flow rate that flows to the secondary side of the pressure regulating valve 8 is made completely constant. I can't. For this reason, at the time of water supply of the local cleaning nozzle, there is a possibility that the flow rate of water flowing to the local cleaning nozzle side changes due to the influence of the water pressure change of the water source. Therefore, the detection information detected by the flow sensor 9 is always transmitted to the control means 11 during the local cleaning, and the control means 11 is set to change the opening degree of the sub electromagnetic valve 7 based on this information. That is, the control means 11 performs feedback control to reduce the opening degree of the sub electromagnetic valve 7 as the flow rate detected by the flow sensor 9 during local cleaning increases, and is thereby supplied to the local cleaning nozzle side. The accuracy of water flow rate can be increased.

  Further, when the operation unit is operated in the standby state and the control unit 11 is instructed to supply water to the bowl unit, the main electromagnetic valve 5 is opened by the control unit 11. Then, the water supplied from the water supply to the water supply channel 1 is supplied to the bowl part through the main channel 2, and after the inner surface of the bowl part is washed, the water is discharged together with dirt through a trap (not shown). Then, the control means 11 closes the main electromagnetic valve 5 when a preset set time has elapsed since the main electromagnetic valve 5 was opened. Thereby, the water supply to the bowl part is stopped, and the bowl part returns to the water reservoir state before washing.

  The main flow path 2 is also provided with a pressure regulating valve 6. However, as in the case of local cleaning, when the water pressure changes on the primary side, the water supplied to the bowl portion side when the bowl portion is supplied. There is a concern that the total amount of water flowing to the bowl portion side may change due to the change in the flow rate of the water. Therefore, the opening time of the main solenoid valve 5 when the bowl portion is supplied, that is, the set time is set so as to be changed by the control means 11 based on detection information detected by the flow rate sensor 9 when the local cleaning nozzle is supplied. Has been.

  Specifically, the control means 11 determines the opening time of the main solenoid valve 5 based on the opening degree of the sub solenoid valve 7 set at the time of the latest local cleaning nozzle water supply. That is, the opening time of the main solenoid valve 5 is set to be shorter as the opening degree of the sub solenoid valve 7 set during the local cleaning is smaller.

  Further, the opening time of the main electromagnetic valve 5 may be determined as follows. That is, the toilet water supply device has a table of the opening time of the main electromagnetic valve 5 that changes according to the flow rate detected by the flow rate sensor 9 for each opening degree of the sub electromagnetic valve 7 scheduled to be changed. Then, referring to this table, the control means 11 determines the main solenoid valve based on the opening of the sub solenoid valve 7 set at the time of the latest local cleaning nozzle water supply and the flow rate detected by the flow sensor 9 at this time. 5 open time is determined. That is, in this case, the smaller the opening degree of the sub electromagnetic valve 7 set at the time of local cleaning, the shorter the opening time of the main electromagnetic valve 5, and the higher the flow rate detected by the flow sensor 9 at the time of local cleaning. The opening time of the main solenoid valve 5 is set short.

  By setting the opening time of the main solenoid valve 5 as described above, it is possible to increase the accuracy of the amount of water supplied to the bowl portion side when the bowl portion is supplied. Here, since the local cleaning is performed prior to the bowl portion water supply and the bowl portion water supply is performed immediately after the local portion cleaning, the change in water pressure between the local cleaning and the bowl portion water supply is relatively small. For this reason, the accuracy of the amount of water flowing into the bowl portion can be reliably increased by detecting and feeding back the flow rate of the water flowing through the auxiliary flow path 3 as described above.

  The toilet water supply apparatus described above controls the operation of the main solenoid valve 5 and the sub solenoid valve 7 based on the detection result of the flow sensor 9 provided in the sub flow path 3, and the flow rate of water flowing to the local washing nozzle side. And it can prevent variation in the quantity of the water which flows into the bowl part side. That is, the accuracy of the flow rate of the water flowing to the local cleaning nozzle side and the amount of the water flowing to the bowl portion side can be increased using the single flow rate sensor 9, and the flow rate sensor 9 can be used effectively.

  In the present embodiment, the opening time of the main solenoid valve 5 is changed in order to stabilize the amount of water supplied to the bowl portion side. However, for example, the main electromagnetic valve 5 can be adjusted in opening degree, and the main electromagnetic valve 5 is opened for a certain period of time so that water is supplied to the bowl portion side, and the flow rate detected by the flow sensor 9 at the time of local cleaning. Accordingly, the opening degree of the main electromagnetic valve 5 may be adjusted, thereby improving the accuracy of the flow rate of water supplied to the bowl portion side and stabilizing the total amount of water supplied to the bowl portion side. . In this embodiment, the flow rate of the water flowing through the sub-flow path 3 is detected by the flow sensor 9 every time the local cleaning is performed, and the opening degree of the sub-electromagnetic valve 7 and the opening time of the main electromagnetic valve 5 are set. It was made to be. However, the opening of the sub electromagnetic valve 7 and the opening time of the main electromagnetic valve 5 may be set only at the initial setting.

DESCRIPTION OF SYMBOLS 1 Water supply path 2 Main flow path 3 Sub flow path 5 Main solenoid valve 7 Sub solenoid valve 9 Flow rate sensor 11 Control means

Claims (1)

  A water supply channel to which water is supplied from a water source is branched into a main channel that leads to the bowl portion of the toilet device and a sub-channel that leads to a local washing nozzle of the toilet device, and a main solenoid valve is provided in the main channel and the sub-channel A sub-electromagnetic valve is provided in the flow path, a flow sensor is provided in the sub-flow path downstream of the sub-electromagnetic valve, and the sub-flow is supplied by the flow sensor during local cleaning nozzle water supply performed by opening the sub-electromagnetic valve. Detecting the flow rate of water flowing through the path, controlling the sub electromagnetic valve at the time of water supply of the local cleaning nozzle based on this detection information, and based on the detection information detected by the flow sensor at the time of water supply of the local cleaning nozzle, A toilet water supply apparatus comprising control means for controlling the main electromagnetic valve so that a predetermined amount of water is supplied to the bowl portion when water is supplied to the bowl portion when the main electromagnetic valve is opened.

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