JPH07331722A - Water flow control device of hot water washing seat - Google Patents

Abstract

PURPOSE:To prevent sudden pressure variation in a hot water tank at opening a flow passage from the hot water tank to a washing nozzle, while preventing deterioration of the efficiency of the hot water tank due to inflow of air to the hot water tank and the flow passage from the hot water tank to the washing nozzle at beginning of washing, generation of an abnormal sound at beginning of washing, and dispersion of washing flow. CONSTITUTION:This water flow control device is provided with a flow adjusting means 17 controlling a water quantity by controlling to rotate a flow adjusting valve body 26 by a motor, a solenoid valve 19 for stopping water, and a time difference opening means 21 controlling to open the flow adjusting means 17 after opening the solenoid valve 19 for stopping water. At beginning of washing, the flow adjusting means 17 gradually increases the opening under the condition in which water feed pressure is applied to the flow adjusting means 17, and hence inflow of air can be prevented and sudden pressure variation applied to a hot water tank can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flush water flow controller for a hot water flush toilet seat.

[0002]

2. Description of the Related Art Conventionally, as a water flow control device for this kind of warm water flush toilet seat, for example, there is one described in Japanese Utility Model Laid-Open No. 4-122781. As shown in FIG. 2, this hot water washing toilet seat is connected to a hot water supply system for heating and supplying the water supply to the washing nozzle 1, and the hot water supply system is provided with various types of water supply pipes from the outside for performing opening / closing and pressure adjustment. The valve unit 2 provided with the electromagnetic valve or the needle valve of 1 is connected, and water is supplied to the hot water tank 3 from this. The hot water tank 3 is provided with a heating means 3a, a temperature sensor 3b, etc.,
The inflowing water is heated to a set temperature and sent to the cleaning nozzle 1. An intermittent supply device 4 for intermittently supplying hot water to the back side or the bidet side of the cleaning nozzle 1 is incorporated in the path from the warm water tank 3 to the cleaning nozzle 1. The intermittent supply device 4 is driven by a motor 5 so that the interval of intermittent supply of wash water from the hot water tank 3 can be appropriately set. Then, the motor 5 of the intermittent supply device 4, the motor 1a of the cleaning nozzle 1, the valve unit 2
The opening and closing of, the heating in the hot water tank 3, and the driving of the intermittent supply device 4 are all controlled by the control unit 6, and the operation device 7 can operate the cleaning device. FIG. 3 shows the details of the intermittent supply device 4, in which the casing 8 communicates with the inflow passage 9 connected to the hot water tank 3 and the bidet side or the posterior side of the washing nozzle 1.
Outflow paths 10a and 10b of the system are formed. A rotor 11 that connects the inflow passage 9 and the outflow passages 10a and 10b is incorporated in the middle of the inflow passage 9 and the outflow passages 10a and 10b. The output shaft of the motor 5 is directly connected to the shaft portion of the rotor 11, and when the motor 5 is activated by a signal from the control unit 6, the rotor 11 rotates forward and backward at a set speed.

When the washing switch (not shown) of the operation switch 7 is turned on to either the posterior side or the bidet side by the above-mentioned configuration, the valve unit 2 opens the flow path to warm the hot water heated to the preset temperature. It is pushed out from the tank 3 and supplied to the cleaning nozzle 1. At the same time, the motor 5 of the intermittent supply device 4 operates and the rotor 11 rotates in the forward and reverse directions. On the other hand, in the intermittent supply device 4, the flow passage grooves 11a and 11b of the rotor 11 are rotated in the direction of the arbitrarily selected outflow passages 10a and 10b in the switch-on state and adjusted to an arbitrary flow passage area. That is, the flow channel 11a and the outflow channel 10
a, the outflow groove 11b and the outflow passage 10b are not communicated with each other, the rotor 11 rotates to rotate the flow passage groove 1
When 1a overlaps the flow passage cross section of the outflow passage 10a, the flow passage is opened and hot water is sent to the back side of the cleaning nozzle 1. The amount of hot water sent to the cleaning nozzle 1 is determined by the flow channel groove 1
The flow passage area is controlled by the flow passage area formed by 1a and the outflow passage 10a. Since the cross-sectional area of the flow passage groove changes along the circumferential direction, the flow passage area can be increased or decreased by rotating the rotor 11 by the motor 5. You can

[0004]

However, in the above-mentioned conventional configuration, the motor of the intermittent supply device starts to rotate to rotate the rotor at the same time when the opening signal is output to the valve unit. Since the solenoid valve or needle valve is provided, there is no guarantee that the valve unit will be opened immediately after the opening signal is output and the wash water will flow into the warm water tank. That is, for example, the valve that opens and closes in the valve unit is a pilot type,
When the valve seat such as the solenoid valve or the needle valve for pressure regulation is stuck, there is some time delay from the output of the opening signal to the actual opening of the valve unit. Therefore, after the intermittent supply device is opened, the valve unit is opened and the washing water in the hot water tank may be guided to the washing nozzle after the flow path from the hot water tank to the washing nozzle is connected. In such a state, the flow path from the cleaning nozzle to the hot water tank is open to the atmosphere, so that air may flow in from the cleaning nozzle although it is a small amount. For this reason, air accumulation occurs in the hot water tank, resulting in a decrease in efficiency of the hot water tank, and air accumulation in the flow path, which causes abnormal noise at the start of cleaning and variations in the cleaning start flow rate. There was a problem.

The present invention has been made to solve the above-mentioned conventional problems, and a water shutoff solenoid valve provided in the middle of a water supply passage, a washing nozzle for ejecting washing water supplied from a hot water tank, and a washing nozzle from the hot water tank. In the hot water washing toilet seat having an electric valve for adjusting the opening of the flow path leading to the hot water tank, it is possible to prevent air from flowing into the hot water tank and the flow path from the hot water tank to the washing nozzle, resulting in a decrease in the efficiency of the hot water tank. A first object of the present invention is to provide a water flow control device for a warm water toilet seat that does not cause discomfort due to abnormal noise at the start of cleaning and variations in the flow rate of cleaning start.

A second object of the present invention is to provide a water shutoff solenoid valve provided midway in the water supply passage, a washing nozzle for ejecting washing water supplied from the hot water tank, and a passage extending from the hot water tank to the washing nozzle. In a hot water washing toilet seat that has an electric valve that adjusts the opening degree of the hot water tank, the efficiency of the hot water tank decreases due to air flowing into the hot water tank and the flow path from the hot water tank to the washing nozzle, and abnormal noise occurs at the start of washing. Also, it is possible to prevent variations in the cleaning start flow rate, and to prevent rapid pressure fluctuations in the hot water tank that occur when the flow path from the hot water tank to the cleaning nozzle is opened, preventing hot water tank destruction and water leakage. An object of the present invention is to provide a water flow control device for a flush toilet seat.

[0007]

In order to achieve the above-mentioned first object, a water flow control device for a hot water washing toilet seat according to the present invention includes a hot water tank having heating means internally provided and having an inlet and an outlet. A water supply channel for guiding the cleaning water to the inflow port, a water shutoff solenoid valve provided in the middle of the water supply channel, a cleaning nozzle for ejecting the cleaning water supplied from the hot water tank, and the cleaning nozzle from the hot water tank. The electric valve for adjusting the opening degree of the flow path leading to the cleaning means, the operating means, and the cleaning valve from the hot water tank are delayed after opening the water shutoff solenoid valve by the cleaning start signal from the operating means. And a time difference opening means for outputting a signal to open the flow path to the nozzle.

In order to achieve the above-mentioned second object, the water flow control device for a hot water washing toilet seat according to the present invention is a hot water tank having a heating means provided therein and having an inlet and an outlet, and washing water to the inlet. The flow rate of washing water is adjusted by controlling the rotation of a water supply channel to be guided, a water shutoff solenoid valve provided on the way of the water supply path, and a flow regulating valve body rotatably provided in the valve housing. Flow control means, a cleaning nozzle connected to the flow control means, an operating means, and the water flow control means delays after opening the water shutoff solenoid valve in response to a cleaning start signal from the operating means. And a time difference opening unit that outputs a signal to open a flow path from the tank to the cleaning nozzle.

[0009]

According to the water flow control device for the toilet bowl of the present invention, the time difference opening means first opens the water shutoff solenoid valve when the operating means gives an instruction to start washing. As a result, the wash water flows in from the water supply port, and the wash water that has been heated and stored in the hot water tank is pushed out of the outflow port and reaches the motor-operated valve. At this time, since the electric valve remains in the state where the flow path to the washing nozzle is closed, the water supply pressure acts on the inlet side of the electric valve and the washing water is retained at the inlet side of the electric valve. . Here, the time difference opening means outputs the drive signal to the motor-operated valve after a certain delay time after outputting the open signal to the water shutoff solenoid valve. The motor-operated valve that receives the opening signal from the time difference opening means acts to open the flow path from the warm water tank to the washing nozzle, and the washing water guided from the warm water tank reaches the washing nozzle and is ejected. As a result, at the start of cleaning, the flow path is always opened with the water supply pressure acting on the inlet side of the motorized valve.
It is possible to prevent air from flowing in from the cleaning nozzle, and as a result, it is possible to prevent the efficiency of the hot water tank from decreasing, the occurrence of abnormal noise, and the variation in the cleaning start flow rate.

Further, according to the water flow control device for a warm water flush toilet seat of the present invention, the time difference opening means first opens the water shutoff solenoid valve when the operation means gives an instruction to start washing. As a result, the wash water flows in from the water supply port, and the wash water heated and stored in the hot water tank is pushed out from the outflow port to reach the flow adjusting means. At this time, since the flow control means keeps the flow path to the cleaning nozzle closed, the inlet water of the flow control means is in a state in which the feed water pressure acts on the inlet side of the flow control means. Be detained. Here, the time difference opening means outputs a signal for driving the motor provided in the flow adjusting means after a certain delay time after outputting the opening signal to the water shutoff solenoid valve. When a signal is output by the time difference opening means, the motor turns the flow regulating valve body in response to the signal and gradually increases the communication area from the state where the flow path from the hot water tank to the cleaning nozzle is closed. Then, finally, it works so that the flow path from the warm water tank to the cleaning nozzle is made to communicate with each other at a predetermined opening degree. As a result, at the start of cleaning, the flow path is opened in the state where the water supply pressure acts on the inlet side of the flow control means, so that there is no concern that air will flow in from the cleaning nozzle. Furthermore, since the flow control valve element is rotationally controlled by the motor and the flow passage area from the hot water tank to the cleaning nozzle is gradually increased, the inflow of air described above is further less likely to occur, and
It is also possible to mitigate a sudden pressure fluctuation in the hot water tank that occurs when the flow path from the hot water tank to the cleaning nozzle is opened.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing a system of a warm water washing toilet seat in one embodiment of the present invention. In the figure, hot water tank 1
Reference numeral 2 includes a heating means 13, a temperature sensor 14, etc., and heats and stores cleaning water supplied from a water supply passage 16 connected to an inlet 15a of the hot water tank 12 at an appropriate temperature, and an outlet 15b.
Through the flow adjusting means 17 to the first washing nozzle 18a for washing the buttocks or the second nozzle 18b for washing the female local area. In the present embodiment, the flow control means 17 is a flow control switching valve capable of controlling the flow rate of the cleaning water and selectively switching the flow paths from the two-system hot water tank to the cleaning nozzle. In addition, a water shutoff solenoid valve 19 is provided in the water supply passage 16 to control the inflow of washing water into the hot water tank 12. That is, the cleaning water supplied from the water supply passage 16 reaches the flow adjusting means 17 through the inflow port 15a, the hot water tank 12, and the outflow port 15b, and reaches the first cleaning nozzle 18a or the second cleaning nozzle 18b. After the selection and the flow rate adjustment are performed, the first cleaning nozzle 17a or the second cleaning nozzle 17a
It is ejected from b to the human body part. This first cleaning nozzle 1
8a or the selection of the flow path system to the second cleaning nozzle 18b and the adjustment of the flow rate thereof and the start and stop of cleaning are all controlled by the control device 20.
7 by outputting an electric drive signal.

Next, the control device 20 will be described in detail. The control device 20 is provided with a time difference opening means 21. The time difference opening means 21 outputs a signal to open the water shutoff solenoid valve at the start of cleaning and then delays the flow adjustment means 17 to cause the hot water tank 12 to operate. The control is performed so that the flow path from the first cleaning nozzle 18a to the second cleaning nozzle 18b is connected at the cleaning start opening. Here, the delay time in this embodiment is set to about 100 msec.

Next, the flow adjusting means 17 will be described in detail. The flow adjusting means 17 has a valve housing 24 having a wash water inflow path 22, a first outflow path 23a and a second outflow path 23b, and a water passage hole 25 on a cylindrical side surface, and is rotatable in the valve housing 24. And a motor 27 that is directly connected to the flow control valve body 26 and controls the rotation of the flow control valve body 26. The cleaning water flowing into the cleaning water inflow passage 22 is supplied to the flow control valve body 26. Depending on the rotational angle position of the water passage hole 25 provided, the water is guided to the first outflow passage 23a or the second outflow passage 23a.
It is determined whether or not it is led to b, and further the flow rate is adjusted by the area of communication between the water passage hole 25 and the first outflow passage 23a or the second outflow passage 23b, and it is led to the selected cleaning flow passage system.

Next, the operation of the above embodiment will be described.
First, the temperature of the cleaning water that has flowed into the hot water tank 12 through the water supply passage 16 and is stored therein is detected by the temperature sensor 14, and is heated by the heating means 13 until the temperature is set by the operating means 28. Here, the operation means 28
When an instruction to start the posterior washing is issued in step 2, the time difference opening means 21 provided in the control device 20 causes the water shutoff solenoid valve 1 to operate.
After outputting the opening signal to 9, the signal is sent by the flow adjusting means 17 after a certain delay time so that the flow path from the hot water tank 12 to the first washing nozzle 18a for washing the buttocks is communicated at the opening degree of washing. Output. That is, the time difference opening means 21 provided in the control device 20 first outputs an opening signal to the water shutoff solenoid valve 19 at the start of cleaning. Solenoid valve for stopping water 1
9 tries to operate when it receives the opening signal,
If the valve seat is stuck, there will be some time delay and the flow path will be opened later. When the water shutoff solenoid valve 19 opens the flow path from the water supply passage 16 to the hot water tank 12, the pressure of the wash water supplied from the water supply passage 16 acts on the hot water tank 12 through the inflow port 15a, and the inside of the hot water tank 12 The wash water, which has been heated and stored in the above, is about to be pushed out from the outflow port 15b. However, at this point, the flow adjusting means 17 is on standby with the flow path to the first cleaning nozzle 18a closed, so that the cleaning water is stopped by the flow adjusting means 17, and the supply water pressure is supplied to the cleaning water inflow path 22. It is in a working state. Here, the time difference opening means 21 is a solenoid valve 19 for stopping water.
The drive signal is output to the motor 27 with some delay time after the open signal is output. Here, the motor 27 turns the flow control valve body 26 by the signal sent from the time difference opening means 21, and the water passage hole 2 provided in the flow control valve body 26.
5 and the first outflow passage 22a communicating with the first cleaning nozzle 18a
From the state where the communication is closed, the communication area is gradually expanded to finally reach the cleaning start opening. In this operation, when the operation means 28 gives an instruction to start the local cleaning of the woman, the water passage hole 25 provided in the flow regulating valve body 26 is moved in the direction of the second outflow passage 23b communicating with the second cleaning nozzle 18b. It is the same except that the orientation and the communication area are adjusted. As a result, at the start of cleaning, the flow path from the warm water tank 12 to the first cleaning nozzle 18a or the second cleaning nozzle 18b is opened with the water supply pressure acting on the cleaning water inflow passage 22 of the flow adjusting means 17. Therefore, it is possible to reliably avoid the situation where air flows in from the first cleaning nozzle 18a or the second cleaning nozzle 18b. Further, since the flow regulating valve body 26 is rotationally driven by the motor 27 to gradually increase the flow passage area, the water supply solenoid valve 19 is operated in the post-warm water tank 12 opened. The water pressure does not suddenly change and gradually decreases, so that the hot water tank 12 can be prevented from being broken or leaking.

[0015]

As described above, according to the water flow control device of the warm water washing toilet seat of the present invention, the following effects can be obtained.

(1) A solenoid valve for water stoppage provided in the middle of the water supply passage, a cleaning nozzle for ejecting cleaning water supplied from the hot water tank, and an opening adjustment of the flow path from the hot water tank to the cleaning nozzle. Equipped with a motor-operated valve and a time-difference opening means that outputs a signal to open the flow-stop valve from the hot water tank to the cleaning nozzle with a delay after opening the water shutoff solenoid valve in response to a cleaning start signal from the operating means. Therefore, it is possible to prevent air from flowing into the hot water tank and the washing flow path, and as a result, prevent the efficiency of the hot water tank from decreasing, noise at the start of washing, and variations in the washing start flow rate. (2) Water supply channel By controlling the rotation of the water shutoff solenoid valve provided on the way, the washing nozzle for jetting the washing water supplied from the warm water tank, and the flow control valve element rotatably provided in the valve housing by the motor. Washing A signal to open the flow control means from the hot water tank to the cleaning nozzle with a delay after opening the water shutoff solenoid valve by the flow control means for adjusting the flow rate of water and the cleaning start signal from the operating means. Since it is equipped with a time difference opening means for outputting, the efficiency of the hot water tank decreases due to air flowing into the hot water tank and the flow path from the hot water tank to the washing nozzle, and abnormal noise at the start of washing and variation in the washing start flow rate are generated. In addition, the flow passage area from the hot water tank to the cleaning nozzle is gradually changed to prevent a rapid pressure change in the hot water tank, and as a result, it is possible to prevent the hot water tank from being destroyed or leaking water.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a system of a warm water washing toilet seat in one embodiment of the present invention.

FIG. 2 is a block diagram of a conventional warm water washing toilet seat.

FIG. 3 is a block diagram of a flow adjusting means in the toilet seat for washing with hot water.

[Explanation of symbols]

 12 hot water tank 13 heating means 15a inflow port 15b outflow port 16 water supply channel 17 flow control means 18a first cleaning nozzle 18b second cleaning nozzle 19 water shut off solenoid valve 21 time difference opening means 24 valve housing 26 flow control valve body 27 motor 28 Operation means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Gendo Kato 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. A hot water tank having heating means therein and having an inflow port and an outflow port, a water supply channel for introducing wash water to the inflow port, and a water shutoff solenoid valve provided in the middle of the water supply channel. By a cleaning nozzle that ejects cleaning water supplied from the hot water tank, an electric valve that adjusts the opening degree of the flow path from the hot water tank to the cleaning nozzle, an operating unit, and a cleaning start signal from the operating unit. Water flow control of a hot water washing toilet seat, which is provided with a delay after opening the water shutoff solenoid valve, and a time difference opening means for outputting a signal so that the electrically operated valve opens the flow path from the hot water tank to the washing nozzle. apparatus. 2. A hot water tank having a heating means therein and having an inflow port and an outflow port, a water supply channel for introducing washing water to the inflow port, and a water shutoff solenoid valve provided in the middle of the water supply channel. A flow adjusting means for adjusting the flow rate of wash water by controlling the rotation of a flow adjusting valve body rotatably provided in the valve housing by a motor; a washing nozzle connected to the flow adjusting means; and an operating means. , A time difference opening which outputs a signal so that the flow control means opens the flow passage from the hot water tank to the cleaning nozzle with a delay after opening the water shutoff solenoid valve by a cleaning start signal from the operating means. And a water flow control device for a warm water washing toilet seat.