JP2811958B2 - Cleaning water supply device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a flush water supply apparatus, and more particularly, to a flush water supply apparatus provided with a flow control valve (hereinafter, referred to as a flow control valve) and a flow detecting means connected in this order. Things.

(Prior Art) Conventionally, a flow regulating valve and a flow rate detecting means are provided in a pipe for supplying washing water to a toilet which has a rim for giving a swirl to stored water in a bowl part and generates a siphon action to discharge waste. A flush water supply device for a toilet provided connected in this order is known.

(Problems to be Solved by the Invention) However, in the conventional flush water supply device, when the flow regulating valve is driven to be opened at a stretch, a time lag occurs until the opening is adjusted to an appropriate degree. The amount of supplied water becomes excessive, which causes the bowl to turn more than necessary. By turning more than necessary, the center of the vortex becomes deeper, the water level of the sealed water falls below the weir of the trap drainage channel, air flows into the trap drainage channel, and the siphon action ends earlier than the original siphon action continuation time. The transport capacity is reduced, and the discharge of waste is insufficient.

Also, at the start of water supply, a change in the water supply pressure on the primary side causes a variation in the water supply characteristics, so that it is not possible to accurately supply the flush water at the set flow rate to the toilet, resulting in a variation in the transfer capacity.

An object of the present invention is to provide a washing and water supply apparatus that solves such a problem.

(Means for Solving the Problems) In order to solve the above problems, the washing water supply device according to the present invention, when a washing start input is applied, until the flow rate of the washing water flowing through the flow regulating valve reaches a predetermined flow rate. The flow control valve was gradually opened continuously from the start of washing water supply.

(Operation) According to the cleaning water supply device of the present invention, when the cleaning start input is applied, the flow regulating valve is gradually and gradually continued from the start of the cleaning water supply until the flow rate of the cleaning water flowing through the flow regulating valve reaches a predetermined flow rate. The water supply amount in the initial stage of water supply does not become excessive, and variation in the water supply amount is reduced.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a flush water supply apparatus according to a first embodiment of the present invention.

The cleaning water supply device 1 includes a cleaning start switch 2, a control unit 3,
A flow regulating valve 4, a flow detecting means 5 and a power supply 6 are provided. The water supply pipe 7 is connected to the toilet 8 via the flow regulating valve 4 and the flow detecting means 5.
Connected to As the flow regulating valve 4, for example, a multi-stage drive type that can control the opening and closing amount according to the number of applied pulses is used.

As shown in FIG. 2, the control unit 3 includes an A / D converter 31, an instantaneous flow rate calculating unit 32, a valve opening degree setting unit 33, and a valve driving circuit.
34, and a timer means 35.

The operation in this configuration will be described with reference to the flowchart of FIG. When the controller 3 receives the supply of power from the power supply 6 and operates the cleaning start switch 2, the timer 35 is started and the flow regulating valve 4 is opened by the opening set by the valve opening setting means 33 in advance. The valve drive circuit 34 is driven. The opening of the flow regulating valve 4 is maintained for the time set by the timer means. The washing water starts to flow downstream with the driving of the flow regulating valve 4. The flow rate of the washing water is detected by the flow detecting means 5 and input to the instantaneous flow calculating means 32 via the A / D converter 31. I do. After a lapse of the time set by the timer means, the valve driving circuit further opens the flow regulating valve 4 by the same degree as the opening degree previously set by the valve opening degree setting means 33.
Drive 34. This series of valve opening operations is performed by an instantaneous flow rate calculating means.
While calculating the instantaneous flow at 32, the process is repeated until the predetermined instantaneous flow is reached. That is, the flow rate increases stepwise. A predetermined amount of cleaning water is supplied to the rim for a predetermined period of time, and the stored water is swirled to generate a siphon action and discharge waste. After a predetermined time has passed and the siphon action state has been interrupted,
In addition, water is supplied for sealing. After that, the control unit 3
The supply of power from the power source 6 is stopped to close the flow control valve 4 to complete the flushing of the toilet.

Note that the opening degree set by the valve opening degree setting means 33 may be set based on the instantaneous flow rate at the time of the previous washing water supply.

The flow rate detecting means 5 includes a pressure sensor, a flow rate sensor, and the like.

Further, if a stepless drive type in which the opening and closing amount can be controlled according to the amount of electric power applied as the flow regulating valve 4 is used, the same operation as described above can be performed with a linear increase characteristic.

FIG. 4 is a block diagram of a flush water supply apparatus according to a second embodiment of the present invention. Here, the same reference numerals are given to the same portions as those in the first embodiment, and the description thereof will be omitted.

In this embodiment, a switching valve 9 is provided downstream of the flow rate detecting means 5, and the switching valve 9 is switched to a rim or a jet nozzle based on a control input from the control unit 3 and connected to the toilet 8.

The operation in this configuration will be described with reference to the flowchart of FIG. When the controller 3 receives the supply of power from the power source 6 and operates the cleaning start switch 2 to start the timer 35, the controller 3 opens the flow regulating valve 4 by the opening set in advance by the valve opening setting means 33. The valve drive circuit 34 is driven and the switching valve 9 is switched to the rim side. The opening of the flow regulating valve 4 is maintained for the time set by the timer means. The washing water starts flowing to the rim side of the switching valve 9 with the driving of the flow regulating valve 4. The flow rate of the washing water is detected by the flow rate detecting means 5, and the instantaneous flow rate is calculated via the A / D converter 31. Input to means 32. After the elapse of the time set by the timer means, the valve drive circuit 34 is further driven by the valve opening setting means 33 so as to open the flow regulating valve 4 by the same degree as the previously set opening degree. This series of valve opening operations is repeated while calculating the instantaneous flow rate by the instantaneous flow rate calculation means 32 until a predetermined instantaneous flow rate is reached. That is, the flow rate increases stepwise. After reaching a predetermined instantaneous flow rate, a predetermined flow rate of flush water is supplied to the rim for a preset predetermined time to perform pre-cleaning of the toilet 9. After a predetermined flow rate of the washing water is supplied to the rim, the switching valve 9 is switched to the jet nozzle to terminate the pre-washing, and the flow rate of the washing water supplied by the flow rate detecting means 5 is detected via the A / D converter 31. The instantaneous flow rate is input to the instantaneous flow rate calculating means 32, and the instantaneous flow rate calculating means 32 calculates the instantaneous flow rate. The valve drive circuit 34 is driven for a time set by the timer means so that the opening degree of the flow control valve 4 becomes the flow rate necessary for generating the siphon action from the calculated instantaneous flow rate, and the cleaning water of a predetermined flow rate is jetted. Supply to nozzle and discharge waste by siphon action. After a predetermined water supply time has elapsed, the water supply to the jet nozzle is terminated and the siphon operation state is interrupted, and then the switching valve 9 is switched to the rim again. At the same time, the supply flow rate of the washing water is detected by the flow rate detection means 5 and input to the instantaneous flow rate calculation means 32 via the A / D converter 31, and the instantaneous flow rate calculation means 32 calculates the instantaneous flow rate. The valve drive circuit 34 is driven so that the opening degree of the flow control valve 4 is changed from the calculated instantaneous flow rate to the instantaneous flow rate required for water sealing, and a predetermined flow rate of wash water is supplied to the rim for a predetermined time set by the timer means. I do. After the predetermined water supply time has elapsed, the control unit 3 stops the supply of power from the power supply 6, closes the flow control valve 4, and ends the flushing of the toilet.

In the second embodiment as well, as in the first embodiment, if a stepless drive type whose opening and closing amount can be controlled in accordance with the amount of electric power to be applied is used as the flow regulating valve 4, linear increase characteristics can be obtained. Accordingly, a similar operation can be performed.

(Effect of the Invention) According to the cleaning water supply apparatus of the present invention, when the cleaning start input is applied, the flow regulating valve is moved from the start of cleaning water supply until the flow rate of the cleaning water flowing through the flow regulating valve reaches a predetermined flow rate. Since it was gradually opened continuously, even if there is a time lag until the flow control valve is driven to the open state and adjusted to the appropriate opening, overshoot occurs and the amount of water supply at the beginning of water supply does not become excessive, In addition, the variation in the amount of water supply is reduced, so that complete discharge of waste can be achieved.

[Brief description of the drawings]

FIG. 1 is a block diagram of a flush water supply device according to a first embodiment of the present invention, FIG. 2 is a block diagram of a control unit thereof,
FIG. 3 is a flowchart showing the flow of the operation of the first embodiment, FIG. 4 is a block diagram of the flush water supply apparatus according to the second embodiment of the present invention, and FIG. 5 is a flowchart showing the flow of the operation. . 1. Cleaning water supply device 2. Cleaning start switch 3.
Control unit, 4 ... flow regulating valve, 5 ... flow rate detecting means, 6 ... power supply, 7 ... water supply pipe, 8 ... toilet bowl, 9 ... switching valve.

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E03D 5/10 E03D 11/08

Claims (1)

(57) [Claims] 1. A flow control valve and a flow detecting means are provided on a conduit for supplying washing water to a toilet for generating a siphon action and discharging wastes, the rim having a rim for imparting swirling to stored water in a bowl portion. In the flush water supply device of the toilet provided by connecting in order,
When a cleaning start input is applied, the flow rate control valve is gradually opened from the start of cleaning water supply until the instantaneous flow rate of the wash water flowing through the flow rate control valve reaches a predetermined instantaneous flow rate. Cleaning water supply device.