JPH0755211B2 - Shower device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shower device,
In particular, it relates to an improved operation when the shower is stopped.

[0002]

2. Description of the Related Art As a shower device, for example, hot and cold water is appropriately mixed by a mixing valve according to a user's designation and discharged from a shower nozzle. The shower nozzle according to a user's designation. The amount of hot water discharged from the water is controlled.

In the hot water supply passage, a drainage passage is connected to a portion upstream of the hot water discharge control valve of the shower nozzle. This drainage channel
It is used when the temperature of the discharged hot water falls below a set temperature and is discharged without discharging the cold hot water from the shower nozzle.

[0004]

By the way, when the shower is stopped, normally, the control valve for the hot water discharge amount of the shower nozzle is immediately fully closed. However, the ejection strength is set to a large value. In this case, when the flow of hot water is suddenly stopped, an excessive hot water pressure is momentarily applied to the control valve. Such a phenomenon is called a water hammer phenomenon, whereby a collision noise of hot and cold water may sound in the hot and cold water supply passage to surprise the user, and the durability of the hot and cold water discharge control valve of the shower nozzle is deteriorated. May bring.

In view of such circumstances, it is an object of the present invention to eliminate the collision noise of hot and cold water accompanying the occurrence of the water hammer phenomenon when the shower is stopped and the adverse effect on the valve controlled in connection with the shower use.

[0006]

A shower device according to the present invention comprises a shower nozzle, a first control valve for adjusting the amount of hot water discharged from the shower nozzle, and a hot water mixing valve for adjusting the mixing ratio of hot water discharged from the shower nozzle. And a second control valve provided in the hot and cold water supply path from the hot and cold water mixing valve to the first control valve to adjust the hot water passing amount, and connected to the hot and cold water supply path from the second control valve to the first control valve Drainage channel,
A drainage valve provided in the middle of this drainage channel, an operation unit that outputs a signal for setting at least the use start / stop of the shower, the jet strength, and the hot and cold water temperature, and each of the valves in response to the output signal from the operation unit. And a control unit for controlling respective operations by outputting required control signals to each other, and when the shower is stopped, the control unit opens the drain valve and gradually opens the second control valve. It functions to close the first control valve after closing it.

[0007]

In short, the pressure of the hot and cold water when the shower is stopped is borne by the second control valve instead of the first control valve, while reducing the load of the hot and cold water pressure on the second control valve. . Therefore, the water hammer phenomenon does not occur.

[0008]

1 is a block diagram of an embodiment of the shower device of the present invention. In the figure, 1 is a water supply channel, 2 is a hot water supply channel, 3 is a hot water supply channel, 4 is a drainage channel, 5 is various shower nozzles, 6 is a water heater, 7 is an operating unit, 8 is a control unit, 9 Is a water temperature sensor, 10 is a hot water temperature sensor, 11 is a hot water temperature sensor, 1
2 is a water amount sensor. The shower nozzle 5 is, for example, a hand shower nozzle, a squall shower nozzle,
There are four types, such as a shower water nozzle and a mist shower nozzle.

V1 ... is a first control valve, V2 is a hot and cold water mixing valve, V3 is a drain valve, and V4 is a second control valve. It should be noted that the first control valves V1 are provided in a number corresponding to each of the plurality of shower nozzles 5 ... Each of which controls the amount of hot water discharged from each shower nozzle 5.

The operation unit 7 is for starting / stopping use of the shower,
It has various operation switches (not shown) for setting at least the ejection strength and the hot and cold water temperature, and outputs individual signals in response to the pressing operation of these operation switches.

The control section 8 outputs required control signals to the respective valves V1 to V4 in response to the output signal from the operating section 7 to control the operations thereof, and functions as described below. To do.

Next, the operation will be described.

The user sets the shower mode to be used, the jet strength and the hot and cold water temperature on the operation unit 7, and sets the shower use start on the operation unit 7.

In response to this, the control section 8 responds to the output signal from the operating section 7 and responds to the drainage valve V3 and the second control valve V.
4 is opened and the first control valve V1 is opened to a degree smaller than the set ejection intensity. As a result, the water heater 6 is operated and hot water from it is supplied to the hot water supply passage 2. Therefore, the control unit 8 controls the hot water temperature, the temperature detected by the hot water temperature sensor 9, and the hot water temperature to be set. Temperature sensor 10
The hot water mixing ratio by the hot water mixing valve V2 is controlled based on the detected temperature of. When the hot water heater 6 starts up, the temperature of the hot water passing through the hot water supply passage 3 is usually lower than the set temperature, so the control unit 8 detects this with the hot water temperature sensor 11 and uses the first control valve. V1 is closed and drain valve V3 is opened to discharge. After that, when the temperature of the hot water passing through the hot water supply passage 3 reaches the set temperature, the control unit 8 detects it by the hot water temperature sensor 11, closes the drain valve V3, and sets the first control valve V1 according to the set jet strength. The hot water of the set temperature is discharged from the shower nozzle 5 by opening it.

After that, when the shower stop is set by the operation unit 7, the control unit 8 responds to the output signal from the operation unit 7 to control the valves V1 to V4 according to the timing chart of FIG. That is, the control unit 8 first determines the drain valve V.
3 is opened, and then the first control valve V is delayed by a predetermined time t1.
1 is closed and the second control valve V4 is gradually closed. Then, after the second control valve V4 is fully closed, the drain valve V3 is closed after a predetermined time t2 delay. In this way, the so-called water hammer phenomenon does not occur.

[0016]

As described above, according to the present invention, the occurrence of the water hammer phenomenon can be prevented when the shower is stopped.
The collision noise of hot and cold water is not generated when the shower is stopped, and the load on the valve controlled in connection with the use of the shower can be reduced, which contributes to a longer life of the shower device.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of a shower device according to the present invention.

FIG. 2 is a time chart used to explain the operation of the apparatus.

[Explanation of symbols]

 1 Water Supply Channel 2 Hot Water Supply Channel 3 Hot Water Supply Channel 4 Drainage Channel 5 Shower Nozzle 7 Operation Section 8 Control Section V1 First Control Valve V2 Hot Water Mixing Valve V3 Drain Valve V4 Second Control Valve

Continuation of the front page (72) Inventor Tatsuro Arai 32 No. Akashi-cho, Chuo-ku, Kobe-shi, Hyogo Inside Noritsu Co., Ltd. (56) References JP-A-3-224525 (JP, A) JP-A-4-49923 (JP , A)

Claims (1)

[Claims] 1. A shower nozzle, a first control valve for adjusting the amount of hot and cold water discharged from the shower nozzle, and a hot and cold water mixing valve for adjusting the mixing ratio of hot and cold water discharged from the shower nozzle.
A second control valve, which is provided in the hot and cold water supply path from the hot and cold water mixing valve to the first control valve, for adjusting the hot water passing amount, and is connected to the hot and cold water supply path from the second control valve to the first control valve A drainage channel, a drainage valve provided in the middle of this drainage channel, an operation unit that outputs a signal for setting at least the use start / stop of the shower, the jet strength, and the hot and cold water temperature, and a signal that responds to the output signal from the operation unit. And a control unit that outputs a required control signal to each of the valves to control their operations, and the control unit opens the drain valve and gradually opens the second control valve when stopping the shower. A shower device having a function of closing the first control valve after closing the first control valve.