JPH0531455Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a waste water control device for a shower system, and is particularly applicable to a body shower device.

(Prior Art) Conventionally, a body shower device has been provided in which a plurality of showers are arranged around the inner surface of a shower chamber and the shower can be showered radially.

(Problem that the invention aims to solve) However, in such a body shower device, when the shower is first used, the cold water remaining in the hot water supply piping and the shower piping comes out, so it takes a long time until comfortable hot water starts to come out. I had to wait naked in the shower room. Furthermore, if water remained in the shower piping, there was a risk that the water in the shower piping would freeze in winter and damage the shower piping.

(Means for Solving the Problems) In order to solve the above problems, the waste water control device for the shower system of the present invention has a hot water supply pipe that leads hot water from a water heater, and a water supply pipe that is connected in the middle of this hot water supply pipe. a shower pipe, a waste water pipe connected to the tip of the hot water supply pipe, and a first waste water on-off valve for controlling waste water provided on the upstream side of the connection part of the shower pipe of the hot water supply pipe. , a second waste water on-off valve that controls discarded water to a drain inserted between the hot water supply pipe and the waste water pipe; and a hot water outlet on-off valve that controls the hot water output provided in the shower pipe. a hot water temperature detecting means for detecting the hot water temperature in the hot water supply pipe or the shower pipe; a comparing means for comparing the detected hot water temperature by the hot water temperature detecting means with a preset temperature; and a shower room. and when the temperature detected by the comparing means becomes equal to or lower than the set temperature while the shower button is in the OFF state, the opening/closing valve for hot water and the second opening/closing valve for waste water are controlled to open. At the same time, the first on-off valve for discarding water is controlled to close, and when the temperature detected by the comparison means becomes equal to or higher than the set temperature while the shower button is in the ON state, the on-off valve for discharging hot water and the first The second waste water on-off valve is controlled to open and the second waste water on-off valve is controlled to close.

(Function) When the shower button is in the OFF state, that is, when the shower is not in use, the control means controls the hot water tap opening/closing valve and In addition to controlling the opening/closing valve for waste water in No. 2,
The first waste water on-off valve is controlled to close. As a result, the hot water in the shower piping is discarded and the shower piping is emptied.

Further, when the temperature detected by the comparison means becomes equal to or higher than the set temperature while the shower button is in the ON operation state, the opening/closing valve for hot water and the first on/off valve for waste water are controlled to open, and the second opening/closing valve is controlled to open. Controls the closing of the waste water on-off valve. As a result, hot water at a comfortable temperature comes out of the shower nozzle from the beginning of use.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic piping diagram and electrical control diagram showing an embodiment of a waste water control device for a shower system according to the present invention.

The electric mixing valve 1 is for adjusting the temperature of the hot water.
A water supply pipe 2 and a hot water supply pipe 3 are connected. A hot water supply pipe 4 is connected to this electric mixing valve 1.
A plurality of shower pipes 5a to 5d are connected to the middle of the hot water supply pipe 4. In addition, hot water supply pipe 4
A waste water pipe 5e for discharging water to a drain (not shown) is connected to the tip thereof. That is, hot water mixed at a predetermined ratio with the temperature desired by the bather by the electric mixing valve 1 is fed to the hot water supply pipe 4.
The water is then branched into a plurality of shower pipes 5a to 5d and a waste water pipe 5e.

The hot water supply pipe 4 is provided with a hot water supply pressure pump 6 for adjusting the hot water supply pressure and a thermistor sensor 7 for detecting the hot water supply temperature. However, this thermistor sensor 7 is
may be provided respectively. Shower piping 5a-5
Each of d is provided with electric two-way valves 8a to 8d for tapping hot water, respectively. Further, a first electric two-way valve 8e for waste water is provided on the outlet side of the hot water supply pressure pump 6 of the hot water supply pipe 4, and a second waste water valve 8e is provided between the tip of the hot water supply pipe 4 and the waste water pipe 5e. An electric two-way valve 8f is provided.

The shower room 9 consists of a cylindrical private room unit, and the shower pipe 5a is piped to a ceiling shower opening 10a attached to the ceiling of the shower room 9, and the shower pipes 5b to 5d other than the shower pipe 5a are connected to the shower pipe 5a. One end of each has a nozzle port 10
The nozzle ports 10b to 10d are piped to the nozzle ports 10b to 10d, and are branched to extend upwardly along the outer circumferential surface of the shower chamber 9 to extend into pipes 11.
10d is connected to nozzle ports 10b' to 19d' arranged substantially opposite to each other on the inner circumferential surface.

A main remote controller (not shown) for setting the hot water temperature and controlling the hot water tap is provided inside the shower room 9 having the above configuration. In addition, the display panel 13 of another main remote controller 12 displays a shower button 14 and the hot water supply status by lighting.
15 LEDs are provided.

The water temperature detected by the thermistor sensor 7 is
The comparison means 18 compares the temperature with a preset temperature, and the comparison result is sent to the electric mixing valve 1, the hot water supply pressurizing pump 6, the hot water tapping electric two-way valves 8a to 8d, and the first wastewater valve via the control unit 19. Electric two-way valve for water 8
e and the operation of the second electric two-way valve 8f for waste water is controlled. Further, the control unit 19 is connected to the main remote controller 12, and is configured to turn on the shower button 14,
In addition to detecting the OFF operation, it also controls the lighting of LED15. Furthermore, the control unit 19 includes potentiometers (not shown) for detecting the open/close states of the electric mixing valve 1, the electric two-way valves 8a to 8d for tapping hot water, and the first and second electric two-way valves 8e and 8f for discarding water. (omitted) signals are received, and the open/closed status of these valves is confirmed.

In addition, in the drawing, the area surrounded by the broken line is constituted by the microcomputer 20.

FIG. 2 is a flowchart illustrating the waste water control procedure.

In the state before the shower button 14 is turned on (that is, the shower room is not in use), if the detected temperature of the hot water remaining in the shower pipes 5a to 5d is below a predetermined temperature, the steps described below are executed. , the shower pipe waste water flag is set, and the hot water in the shower pipes 5a to 5d is controlled to be used as waste water. On the other hand, if the detected hot water temperature is above the predetermined temperature, the shower pipe waste water flag remains reset. In other words, the hot water used last time remains in the shower pipes 5a to 5d. In this state, when the shower button 14 is turned on by the bather in the shower room 9 in step, In step 1, it is determined whether the shower pipe waste water flag is set. When this flag is set, the shower pipes 5b to 5 are connected as described above.
Since the low temperature hot water in d has already been discarded,
Next, execute water supply piping waste water control in step . That is, the first and second electric two-way valves 8e and 8f for discarding water are controlled to open, and the electric two-way valves for tapping hot water 8a to 8d are controlled to be closed. Then,
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 piping waste water flag is a flag for moving to step ~ for controlling the supply of hot water that is comfortable for bathers as a result of the water being discarded from the hot water supply pipe 4 in the step described above.

After this, if the shower button 14 continues to be in the ON state even after the water is discarded in step , then when the shower pipe is returned to step , it is determined that the shower pipe waste water flag has been reset in step. Proceed with the action. That is, in this step, the hot water temperature detected by the thermistor sensor 7 is compared with a predetermined temperature, and when the detected temperature is higher than the predetermined temperature, the second electric two-way valve 8f for discarding water is activated in this step.
The electric two-way valve 8a for tapping hot water is controlled to close.
~8d is opened and hot water is tapped. In other words, the shower will be used normally.

Thereafter, in a step, the hot water supply piping waste water flag is reset and the process returns, and after returning, the operation proceeds from step to step again. At this time, since the water supply piping waste water flag has been reset in step, the operation proceeds to step and the control unit 19 sets the hot water tap electric two-way valves 8a to 8a.
Continue the opening control of 8d. From then on, the steps... until the shower button 14 is turned off.
, are repeated, and the bather can take a shower with hot water controlled to an optimal temperature.

In such an operating state, when the shower button 14 is turned OFF, the operation moves from step to step, and in each step, the control section 19 controls the electric two-way hot water tapping valves 8a to 8d to close. Then, after confirming that the hot water supply pipe waste water flag is not set in step 1, the operation proceeds to step ~ to perform water waste control for the shower pipes 5a to 5d.

That is, in a step, the temperature detected by the thermistor sensor 7 is compared with a predetermined temperature, and if the detected temperature is higher, a shower pipe waste water flag is set in a step. This shower pipe waste water flag is used to control the waste water of the hot water supply pipe 4 (from step to step) when the shower button 14 is turned on again later.
) is a flag for transitioning to

Thereafter, in step, the first electrically operated two-way valve 8e for waste water is controlled to close, and in step, the electrically operated two-way valves 8a to 8d for hot water and the second electrically operated two-way valve 8f for discarded water are controlled to open.

Although the shower system in this example is a body shower system, it may of course be a normal shower system.

(Effect of the invention) The waste water control device for the shower system according to the invention has the following effect: when the shower button is in the OFF state,
When the temperature detected by the comparison means becomes equal to or lower than the set temperature, the hot water tap opening/closing valve and the second waste water opening/closing valve are controlled to open, the first waste water opening/closing valve is controlled to close, and the shower button is pressed. In the ON operation state, when the temperature detected by the comparison means exceeds the set temperature, the hot water tap opening/closing valve and the first
Since the configuration is configured such that the waste water on-off valve is controlled to open and the second waste water on-off valve is controlled to close, after using the shower, the main shower piping after the first waste water on-off valve is closed. The cold water remaining in the shower can be reliably discarded, and the next time you use the shower, you can take a bath at a comfortable temperature from the beginning. Moreover, since the cold hot water remaining mainly in the shower pipes after the first waste water on-off valve can be reliably discarded, freezing of the shower pipes in winter can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a control system diagram showing an embodiment of a waste water control device for a shower system according to the present invention, and FIG. 2 is a flowchart showing a procedure for controlling waste water. 1...Electric mixing valve, 4...Hot water supply piping, 5a-5
d...Shower piping, 5e...Disposal water piping, 6...
...Hot water supply pressure pump, 8a to 8d...Electric two-way valve for tapping hot water, 8e...First electric two-way valve for discarding water, 8f
...Second electric two-way valve for discarding water, 9...Shower room, 12...Main remote control, 14...Shower button.

Claims (1)

[Scope of Claim for Utility Model Registration] A hot water pipe that leads hot water from a water heater, a shower pipe connected to the middle of the hot water pipe, a waste water pipe connected to the tip of the hot water pipe, and the hot water pipe a first on-off valve for waste water that controls waste water, which is provided upstream from the connection part of the shower pipe; and a first waste water on-off valve that controls waste water, and discards water to a drain inserted between the hot water supply pipe and the waste water pipe. a second waste water on-off valve for controlling; a hot water outlet on-off valve provided in the shower piping for controlling hot water output; and a hot water temperature detection means for detecting the temperature of hot water in the hot water supply piping or the shower piping. , a comparison means for comparing the hot water temperature detected by the hot water temperature detection means with a preset temperature; a shower button provided in the shower room; and a shower button provided in the shower room;
When the temperature detected by the comparing means becomes equal to or lower than the set temperature, the hot water tap opening/closing valve and the second waste water opening/closing valve are controlled to open, and the first waste water opening/closing valve is controlled to close; of the shower button
In the ON operation state, when the temperature detected by the comparison means is equal to or higher than the set temperature, the opening/closing valve for tapping hot water and the first on/off valve for waste water are controlled to open, and the second on/off valve for waste water is controlled to open. A waste water control device for a shower system, comprising a control means for controlling the closing of the shower system.