JPH067092Y2 - Waste water time delay device for shower system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a waste water time delay device for a shower system, and is particularly used for body showers.

(Prior Art) In a conventional body shower device, an opening / closing valve is provided in each pipe for supplying and stopping hot water to the shower room. As such an on-off valve, there are a sluice valve, a globe valve, etc. as a manual one, and a solenoid valve, an electric two-way valve etc. as an electrically operated valve.

(Problems to be solved by the invention) In the case of a solenoid valve, the time from full close to full open is instantaneous,
Therefore, when the solenoid valve is used to control the opening and closing, there is a problem that a so-called water hammer phenomenon occurs due to a sudden and pressure change. Also, in the case of a solenoid valve, there is no such sudden pressure change, but from fully closed to fully open,
Alternatively, it takes several seconds (usually 3 to 6 seconds) from full opening to full closing. Therefore, after one solenoid valve is normally completely opened or closed, the other solenoid valve is opened or closed. Even when the closing operation has to be started, there is a problem in that there is a state in which both solenoid valves are opened at the same time.

(Means for Solving the Problem) The waste water time delay device of the present invention has been made in view of the above circumstances, and the waste water time delay device and the shower room are connected to the hot water supply pipe via the first electric two-way valve. A common pipe for supply is connected, a drain water pipe is connected to a lower end portion of the common pipe via a second electric two-way valve, and a plurality of shower pipes from the common pipe form an electric two-way valve for hot water discharge. In a shower system having a structure branched via the opening / closing operation, the opening / closing operation of the tapping electric two-way valve, the first electric two-way valve and the opening / closing operation are interlocked via a delay means for delaying a predetermined time. Is.

(Operation) The opening / closing operation of the hot water outlet electric two-way valve and the opening / closing operation of the first electric two-way valve are made to interlock with each other via a delay means for delaying a predetermined time. Here, the fixed time is an operation time from the fully closed to the fully opened or from the fully opened to the fully closed of the electric two-way valve, and is set to about 3 to 6 seconds. For example, when the drainage water is started before the shower switch is turned on, the tapping electric two-way valve that is completely open is controlled to be closed, and then the delaying means delays the tapping electric two-way valve for a certain period of time. Is completely closed and then the first electric two-way valve is controlled to be opened. This makes the first
When the motorized two-way valve is opened, the waste water does not flow before the tapping electric two-way valve.

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

FIG. 1 shows a schematic piping diagram and an electric wiring diagram of the shower system of the present invention, and FIG. 2 shows a schematic block diagram of only the electric control system of the apparatus.

The electric mixing valve 1 is for adjusting the hot water temperature, and the water supply pipe 2
a and the hot water supply pipe 2b are connected. This electric mixing valve 1
The hot water mixed at a predetermined temperature is supplied through the hot water supply pipe 3 to the common pipe 4 for hanging down the waste water and supplying it to the shower chamber 9. A waste water pipe 5e is connected to the lower end of the common pipe 4, and the waste water pipe 5e
A plurality of (three in this example) shower pipes 5a, 5b, 5c are branched from the common pipe 4 above e. One end of one of the branched shower pipes 5a, 5b, 5c is provided with a nozzle port 10 provided on the ceiling of a shower chamber 9 formed of a cylindrical private chamber unit.
connected to a. Further, the tips of the shower pipes 5b and 5c other than the shower pipe 5a are connected to the two nozzle openings 10b and 10c provided on the peripheral wall of the shower chamber 9, and the tips are branched. The shower chamber 9 is circulated about a half round along the outer peripheral surface of the shower chamber 9, and is connected to another two nozzle openings 10b 'and 10c' arranged at positions substantially opposite to the nozzle openings 10b and 10c, respectively. .

The hot water supply pipe 3 is provided with a hot water supply pressure pump 6 for adjusting the hot water supply pressure and a thermistor sensor (hot water temperature detection unit) 7 for detecting the hot water supply temperature, and at the outlet side of the hot water supply pressure pump 6. First electric two-way valve for waste water (first electric two-way valve)
8e is provided. A second electric two-way valve for waste water (second electric two-way valve) 8f is provided in the waste water pipe 5e. The thermistor sensor 7 is a shower pipe 5a, 5
It can also be provided in b and 5c. Also, shower piping 5
Electric power two-way valves 8a, 8 for hot water discharge are provided in each of a, 5b, 5c.
b and 8c are provided.

The display panel 1 of the main remote controller 12 (see FIG. 2) for setting the hot water temperature and controlling the hot water discharge on the inner wall of the shower room 9.
3 is provided. The main remote controller 12 includes a setting unit 14 including a shower switch for instructing the start of hot water, and a display unit 1 including an LED for displaying the hot water status by lighting.
5. It has a function such as a buzzer output section 16 for notifying an abnormality of the hot water temperature.

The hot water temperature detected by the thermistor sensor 7 is controlled by the controller 1.
The temperature is compared with a preset temperature in 9 and, based on the comparison result, the electric mixing valve 1, the hot water supply pressurizing pump 6, the hot water outlet two-way valves 8a, 8b,
8c, the first electric two-way valve for draining water 8e, and the second electric two-way valve for draining water 8f are controlled. In addition, the rotary shafts of the electric mixing valve 1, the hot water tapping two-way valves 8a, 8b, 8c, the first drainage electric two-way valve 8e, and the second drainage electric two-way valve 8f Potentiometers 18 (see FIG. 3) for detecting the open / closed state are respectively provided, and the control unit 1
9 confirms the fully open state and the fully closed state while calculating and monitoring the opening degree of each of the electric two-way valves 8a to 8f based on the outputs of these potentiometers 18. Then, by checking the fully open state and the fully closed state, each electric two-way valve 8
The timings of the opening operation and the closing operation of a to 8f are controlled.

FIG. 11 shows a flow chart illustrating the wastewater control procedure,
4 to 10 show the open / closed state of each electric two-way valve during each operation when this shower system is used.

Here, in the state before the shower switch is turned on, if the detected hot water temperature of the hot water remaining in the shower pipes 5a, 5b, 5c is equal to or lower than a predetermined temperature, the shower pipe discard water flag is set in a step described later. Set,
Hot water in the shower pipes 5a, 5b, 5c is discarded and water is controlled. On the other hand, if the detected hot water temperature is the predetermined temperature, the shower pipe discard water flag remains reset.

First, when the shower switch is turned on by the bather in the shower room 9 in step, it is determined in step whether or not the shower pipe discard water flag is set. When this flag is set, the low-temperature hot water in the shower pipes 5a, 5b, 5c has already been discarded (the state shown in FIG. 4), so the steps are first executed to release the electric two-way valve for hot water discharge. The control of the closing operation of 8a, 8b, 8c is started. Then, in steps, the outputs of the potentiometers 18 provided on the hot-water tapping two-way valves 8a, 8b, 8c are monitored, and the hot-water tapping two-way valves 8a, 8b,
After confirming that 8c is completely closed (state of FIG. 5), in the next step, the closed first electric two-way valve for drain water 8e is controlled to be opened, and the waste water of the hot water supply pipe 3 is removed. Execute (state of FIG. 6). Next, in step, the shower pipe waste water flag is reset, and in step, the hot water supply pipe waste water flag is set. This hot water supply pipe waste water flag is a flag for shifting to steps for controlling hot water discharge for the bather as a result of the waste water of the hot water supply pipe 3 in the above steps. That is, if the shower switch after discarding water by steps ,, and is in the ON state, the process moves to step →→, and if the hot water supply pipe discard water flag is confirmed in this step, the hot water temperature detected by the thermistor sensor 7 and the predetermined temperature are determined in step. And when the detected hot water temperature is above this predetermined temperature,
In a step, the second electric two-way valve for waste water 8f is closed and controlled, and in a step, the electric hot water outlet two-way valves 8a, 8b, 8c are controlled to open to discharge hot water (state of FIG. 7). At the step, the hot water supply pipe waste water flag is reset and the process returns, and after returning, the process moves from the step to the step to control the opening of the hot water outlet electric two-way valves 8a, 8b, 8c.

Next, when the shower switch is turned off, the hot water outlet electric two-way valves 8a, 8b, 8c are controlled to be closed in steps (state of FIG. 8). When it is confirmed in step that the hot water supply pipe waste water flag is not set, waste water control of the shower pipes 5a, 5b, 5c in steps 1 to 5 is performed. That is, the hot water temperature detected by the thermistor sensor 7 is compared with a predetermined temperature in step, and if the detected hot water temperature is higher, the shower pipe discard water flag is set in step, and the shower pipe when the shower switch is turned on is operated. Prepare for waste water control (steps ~) of 5a, 5b, 5c. Then, control of the closing operation of the first electric two-way valve for draining water 8e is started in step, and the potentiometer 1 provided in the first electric two-way valve for draining water 8e is started in step.
After confirming that the first electric drainage two-way valve 8e for drainage water is completely closed (state of FIG. 9), the next step is to close the electric two-way hot water outlet Valves 8a, 8
b and 8c are controlled to be opened, and in step, the closed second electric motor-operated two-way valve for drainage 8f is controlled to be opened to drain the shower pipe (state in FIG. 10).

In the above embodiment, the step and the closing operation in the step are confirmed by monitoring the output of the potentiometer, but the present invention is not limited to such a method, and for example, from the fully opened to the fully closed of each electric two-way valve. Or the time from fully closed to fully opened is stored in the control unit 19 in advance, and this stored time is counted after the output of fully opened or fully closed of the electric two-way valve, and after the lapse of time, the process proceeds to the next step. You may

(Effect of the Invention) As described above, according to the waste water time delay device of the shower system according to the present invention, the shower switch is turned on.
When operated, first the electric hot water outlet two-way valve is closed, and after confirming that it is fully closed, the first electric two-way valve is opened. Water does not spout from the shower nozzle,
A more reliable drainage function can be realized.

[Brief description of drawings]

FIG. 1 is a schematic piping diagram and electric wiring diagram of a shower system equipped with a waste water time delay device of the present invention, and FIG. 2 is a schematic block diagram showing only an electric control system of the system, and FIG.
FIG. 4 is a diagram showing a potentiometer, FIGS. 4 to 10 are diagrams showing the open / closed state of each electric two-way valve at each operation when the present shower system is used, and FIG. It is a flow chart. 3 ... Hot water supply piping 4 ... Common piping 5a to 5c ... Shower piping 5e ... Waste water piping 8a to 8c ... Hot water discharge two-way valve 8e ... First waste water electric two-way valve 8f ... Second waste water electric motor Two-way valve 18 ... Potentiometer 19 ... Control unit

Claims (1)

[Scope of utility model registration request] 1. A common pipe for draining water and for supplying to a shower room is connected to a hot water supply pipe via a first electric two-way valve, and a second electric two-way valve is provided at a lower end portion of the common pipe. In the shower system having a structure in which a drain water pipe is connected via the common pipe and a plurality of shower pipes are branched from the common pipe through a hot water discharge two-way valve, the opening / closing operation of the hot water discharge two-way valve and the first A drainage time delay device for a shower system, characterized in that the opening / closing operation of the electric two-way valve of No. 1 is linked through a delay means for delaying a certain time.