JP2000120124A - Faucet control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove the defective closing of a valve by preventing the chattering of a valve element occurring in the case of changing over the discharge of hot or cold water. SOLUTION: This faucet control method is equipped with a hot water passage on-off valve 1 and a cold water passage on-off valve 2; a flow regulating valve 5 for regulating the flow rate of the hot water and water or their mixed hot water on the downstream side of the valves 1, 2; a shower nozzle 3 and a faucet 4 for discharging the hot water from the flow regulating valve 5; and a switching valve 6 to switch a passage between the flow regulating valve 5 and the shower nozzle 3 and a switching valve 7 to switch a passage between the flow regulating valve 5 and the faucet 4. In the case where the hot water and the cold water are changed over through the passage on-off valves 1, 2, the flow rate is throttled using the flow regulating valve 4, and after either of passage on-off valves 1, 2 for hot or cold water is closed, the other is opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a faucet control method for switching between hot water and cold water discharge, and more particularly to a technique for preventing chattering of a valve body at the time of switching to eliminate a valve closing defect. Things.

[0002]

2. Description of the Related Art Conventionally, a flow path opening / closing valve for hot water and a flow path opening / closing valve for cold water, a flow rate adjusting valve downstream of these for adjusting the flow rate of hot water or water or a mixed hot water thereof, A shower nozzle and a curan for discharging hot and cold water from the regulating valve, an on-off valve for opening and closing a passage between the flow regulating valve and the shower nozzle, and an on-off valve for opening and closing a passage between the flow path regulating valve and the curan The method of controlling the faucet is to switch the hot water and cold water flow path on-off valves simultaneously.

[0003]

However, according to such a control method, for example, the pressure on the secondary side of the hot water flow path opening / closing valve, which is operated from the open state to the closed state, becomes unstable. There has been a problem that the unstable state lasts for a long time and, for example, a valve element such as a diaphragm vibrates, chattering occurs, and a valve closing failure may occur.

An object of the present invention is to solve such a problem, and to provide a control method of a faucet which can prevent chattering of a valve body which occurs when switching between discharge of hot water and cold water and eliminate a valve closing defect. The task is to provide.

[0005]

According to a first aspect of the present invention, a flow path opening / closing valve for hot water, a flow path opening / closing valve for cold water, and hot water or water or a mixture of hot and cold water are provided downstream thereof. A flow control valve 5 for adjusting the flow rate; a shower nozzle 3 and a curran 4 for discharging hot water from the flow control valve 5; an on-off valve 6 for opening and closing a passage between the flow control valve 5 and the shower nozzle 3; This is a method of controlling a faucet having an on-off valve 7 for opening and closing a passage between a regulating valve 5 and a curran 4, wherein a flow rate adjustment is performed when hot water and cold water are switched by the flow path on-off valves 1 and 2. The flow rate is reduced by the valve 4, and one of the flow opening / closing valves 1 and 2 for hot or cold water is closed, and then the other is opened. According to such a configuration, first, the flow rate on the secondary side of the flow path opening / closing valves 1 and 2 is reduced by the flow rate adjustment valve 5 to increase and stabilize the pressure on the secondary side, and thereafter, one flow path By opening the other flow passage opening / closing valve 2 after closing the opening / closing valve 1, chattering of the valve body at the time of closing the valve can be avoided, and poor valve closing can be prevented.

According to a second aspect of the present invention, a temperature sensor is provided on the upstream side of the shower nozzle and the curan, and the discharge from the shower nozzle is detected by the curan based on a detection result of the temperature of the temperature sensor. And discharge is stopped after a set time. According to such a configuration, when the shower nozzle 3 is used after the case where the previous user has set a high temperature, the on-off valve 6, based on the detection result of the hot water temperature that has become a certain temperature or higher. 7 is switched and high-temperature water is discharged from the curran 4, so that high-temperature water can be prevented from being injected from the shower nozzle 3 and can be prevented from being exposed to high-temperature water. In addition, the discharge from the curran 4 is stopped after a certain period of time, which is safe.

In the third aspect, the flow path on-off valves 1 and 2 and the on-off valves 6 and 7 are closed by the plunger 11 actuated by the electromagnetic force and the plunger 11 being pressed. And a diaphragm 12 which is opened and actuated by water pressure at the time of retreat. The diaphragm 12 is constituted by an electromagnetic valve V having a through hole 13 opened and closed by a plunger 11, and water is stopped upstream of the faucet. The stoppers 9 and 9 are provided, the drainage stopper 10 is provided between the water stopcock 9 and the faucet, and all the valves 1, 2, 6 and 7 are opened and the atmosphere is opened to the atmosphere through the through hole 13 of the diaphragm 12. It is characterized in that air is supplied by ventilation from the side to drain water from the drain plug 10. According to such a configuration, when draining water in the vicinity of the pipe and the solenoid valve V, the water stopcocks 9, 9 disposed at the most upstream side are closed and the water pressure of the hot and cold water supply reaches. After that, for example, the on-off valve 6 of the shower nozzle 3 or the on-off valve 7 of the curan 4 is opened to open the secondary sides of the on-off valves 6, 7 to the atmosphere,
By opening all the valves 1, 2, 6, and 7, air can be supplied from the atmosphere side through the through holes 13 of the diaphragm 12 of these valves 1, 2, 6, and 7. In addition, the residual water in the vicinity of the valves 1, 2, 6, and 7 can be drained from the drain plug 10 as well as in the piping, so that there is no need to perform a special freeze prevention treatment on the piping, and use in cold regions. Is possible.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a faucet control method according to the present invention will be described below with reference to the drawings of a faucet apparatus. FIG.
FIG. 4 is an explanatory view of a faucet device.

A faucet 14 is installed in the bathroom, and a hot water supply pipe 15 from a water heater and a cold water pipe 16 from a water supply are connected. For example, by operating a touch switch, the shower nozzle 3 or 4 allows hot water, cold water or mixed hot water to be discharged. Touch switches include a shower switch, a callan switch, a stop switch, a hot / cold water switch, and the like.

The hot water pipe 17 of the faucet 14 is provided with a flow path opening / closing valve 1 for hot water, and the cold water pipe 18 is provided with a flow path opening / closing valve 2 for cold water. A flow control valve 5 for adjusting the flow rate of the mixed hot water, a shower nozzle 3 and a curran 4 for discharging hot water from the flow control valve 5, and an opening and closing for opening and closing a passage between the flow control valve 5 and the shower nozzle 3. An on-off valve 7 for opening and closing a passage between the valve 6, the flow control valve 5 and the callan 4 is provided. The valves 1, 2, 6, and 7 use a solenoid valve V described later. The flow control valve 5 is a kind of bypass valve, and a small flow is caused by the bypass 20 in the bypass hole even in the closed state. In the case of opening the flow control valve 5,
A large flow rate flows by the bypass 20 and the valve opening by the bypass hole.

When controlling the faucet 14 as described above, when switching from a state in which hot water is supplied from the shower nozzle 3 or the curan 4 to a state in which cold water is supplied, if a switch for switching between hot water and cold water is operated, first,
After closing the flow rate control valve to reduce the flow rate and closing the flow path opening / closing valve 1 for hot water to stabilize the pressure on the secondary side, actually, about 1 second after the closing of the flow path opening / closing valve 1 After a lapse of time, the flow path on-off valve 2 for chilled water is opened, and the flow control valve 5 is also opened. Such control can be easily performed by a timer. As described above, when switching from hot water to cold water, first, the flow rate on the secondary side of the flow path on-off valves 1 and 2 is reduced by the flow rate regulating valve 5 to increase and stabilize the pressure on the secondary side. By closing the one flow path on-off valve 1 and then opening the other flow path on-off valve 2 and opening the flow control valve 5, chattering of the valve body at the time of valve closing can be avoided, and poor valve closing can be prevented. You can do it.
The switching from the water to the hot water is performed in the same manner.

Table 1 shows the open / close states of the valves 1, 2, 5, 6, and 7 when the shower switch, the callan switch, the hot / cold water switch, and the stop switch are operated.

[Table 1] FIG. 2 shows another embodiment. However, the basic configuration of this embodiment is the same as that of the above-described embodiment, and the common parts are denoted by the same reference numerals and description thereof is omitted.

In this embodiment, a temperature sensor 8 is provided upstream of the shower nozzle 3 and the curran 4 and upstream of the flow control valve 5.
The control method is such that the discharge from the shower nozzle 3 is switched to the discharge from the curran 4 based on the detection result of the temperature equal to or higher than a predetermined value and the discharge is stopped after a set time.

According to such a control method, when a later user uses the shower nozzle 3 after setting a high temperature by a previous user, the temperature of the hot water becomes higher than a certain level. The open / close valves 6 and 7 are switched based on the detection result, and high-temperature water is discharged from the curran 4, so that high-temperature water can be prevented from being injected from the shower nozzle 3,
It can prevent exposure to high-temperature water. In addition, the discharge from the curran 4 is stopped after a certain period of time, which is safe.

In this case, after the discharge from the shower nozzle 3 is switched to the curan 4 side, a control method for providing a chilled water supply mode for supplying chilled water from the curran 4 until the discharge from the curran 4 is stopped is adopted. Thus, all the high-temperature water in the faucet 14 is drained.

Further, in this embodiment, when the tapping button, which is a call switch, is kept pressed for a certain period of time, the tapping button is controlled without detecting the temperature based on the detection result. According to such a control method, high-temperature water in a pipe between the water faucet 14 and the hot water heater for the water faucet 14 can be drained, which is safe.
Furthermore, if the hot water remains in the piping due to the operation of the safety device due to an abnormality in the water heater or the wrong setting of the user, etc., the hot water cannot be drained depending on the detection result of the temperature detecting device for safety. That is no longer the case, and you can recover so that you can tap out quickly. In FIG. 2 (b), reference numeral 21 denotes a manual thermoblock which supplies / stops hot water and supplies / stops cold water.
The temperature is adjusted by adjusting the mixing amount of hot and cold water.
The control method of the present invention is implemented when switching from hot water to cold water and switching from cold water to hot water. The control method of the present embodiment assumes that the water heater can or cannot control the temperature.

FIGS. 3 and 4 show still another embodiment. However, the basic configuration of this embodiment is the same as that of the above-described embodiment, and the common parts are denoted by the same reference numerals. The description is omitted.

FIG. 4 shows an electromagnetic valve V, which is used as the flow-path on-off valves 1 and 2 and the on-off valves 6 and 7 in the above embodiment. The diaphragm 1 is provided with a plunger 11 that is actuated by pressing the plunger 11, and is opened and closed by hydraulic pressure when the plunger 11 is retracted.
2 is provided in the valve hole 22, and the diaphragm 12 is freely movable separately from the plunger 11, and the diaphragm 12 has a through hole 13 opened and closed by the plunger 11.

As shown in FIG. 3, water stopcocks 9 and 9 are provided in a pipe upstream of the water tap 14. Further, the water drainage plugs 10, 10 for draining residual water in the water faucet 14 are provided at the lowest position.

In the control method of the present embodiment, when water is drained from the piping of the faucet 14 and the vicinity of the solenoid valve V, the water stopcocks 9 and 9 arranged at the most upstream side are closed. After the water pressure of the hot and cold water supply is not reached, the lowest drain plugs 10, 10 are opened. Next, the on-off valve 6 of the shower nozzle 3 and the on-off valve 7 of the curran 4 are opened, and the secondary sides of the on-off valves 6 and 7 constituted by the solenoid valve V are opened to the atmosphere side, and the shower nozzle 3 is opened. The remaining water in the pipe is drained from the curran 4 side, and the flow path on-off valves 1 and 2 of the solenoid valve V are opened. In this case, although the plungers 11 of the valves 1 and 2 are operating, the diaphragm 12 does not receive water pressure, so the diaphragm 12 does not open apart from the valve hole 22, but is formed in the diaphragm 12. Through hole 1
3 is open and the shower nozzle 3 is open to the atmosphere
Then, air is sent from the curan 4 side to the upstream side, and the residual water in the pipe in the faucet 14 is drained from the drain plug 10.

As described above, before opening the valves 1 and 2, the valves 4 and 7 of the shower nozzle 3 and the shower nozzle 3 are opened, and the remaining water in the piping of the shower nozzle 3 is drained from the callan 4. , Both the curran 4 and the shower nozzle 3 are opened to the atmosphere side to supply the air, thereby improving the air supply efficiency.

Therefore, the valves 1, 2,
The remaining water in the vicinity of 6 and 7 can be drained from the drain plug 10, and there is no need to perform a special antifreeze treatment on the piping.
It can be used in cold regions. FIG. 5 shows still another embodiment, in which the manual thermoblock 2 is used.
1 is provided.

[0023]

According to the first aspect of the present invention, there is provided a flow path opening / closing valve for hot water and a flow path opening / closing valve for cold water, and a flow rate adjusting means for adjusting a flow rate of hot water or water or a mixed hot water thereof at a downstream side thereof. A valve, a shower nozzle and a curan that discharges hot and cold water from the flow control valve, an on-off valve that opens and closes a passage between the flow control valve and the shower nozzle, and an open and close that opens and closes a passage between the flow control valve and the curan A method of controlling a faucet comprising a valve, wherein when switching between hot water and cold water by the flow path opening and closing valve, while reducing the flow rate with a flow rate adjusting valve, the flow path opening and closing valve for hot or cold water Since one is closed and the other is opened, first, the flow rate on the secondary side of the flow path on-off valve is reduced by the flow regulating valve to increase and stabilize the pressure on the secondary side. After closing the flow path open / close valve, open the other flow path open / close valve. In, can avoid chattering of the valve body during closing, there is an advantage that it is possible to prevent the closing failure.

According to a second aspect of the present invention, a temperature sensor is provided on the upstream side of the shower nozzle and the curan, and the discharge from the shower nozzle is switched to the discharge from the curan based on the detection result of a temperature equal to or higher than a predetermined value by the temperature sensor. Since the discharge is stopped after a time, in addition to the effect of claim 1, when the shower nozzle is used after the previous user has set the high temperature, the detection of the temperature of the hot water that has become higher than a certain level is detected. The high-temperature water is discharged from the curran by switching the on-off valve based on the result, and therefore, there is an advantage that the high-temperature water can be prevented from being jetted from the shower nozzle and can be prevented from being exposed to the high-temperature water. In addition, the discharge from the curan is stopped after a predetermined time, which is safe.

According to a third aspect of the present invention, the flow passage opening / closing valve and the opening / closing valve are operated to be closed by a plunger operated by electromagnetic force and pressed by the plunger, and are also opened by water pressure when the plunger is retracted. With a diaphragm
The diaphragm consists of a solenoid valve with a through hole that can be opened and closed by a plunger.A water stopcock is provided upstream of the faucet, a drainage plug is provided at the bottom, and all valves are opened. Through the through hole of the diaphragm to supply air by ventilation from the atmosphere open side and drain the water from the drain plug,
In addition to the effect of the first aspect, when draining water in the vicinity of the piping and the solenoid valve, the water stopcock provided at the most upstream side is closed so that the water pressure of hot and cold water supply does not reach. After that, for example, the on-off valve of the shower nozzle or the on-off valve of the callan is opened to open the secondary side of the on-off valve to the atmosphere side, and all the valves are opened to open the diaphragms of these valves. Air can be supplied from the atmosphere side through the hole, so that the residual water in the piping as well as in the vicinity of the valve can be drained from the drain plug, eliminating the need for special antifreeze treatment on the piping. This has the advantage that it can be used in cold regions.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention.

FIG. 2 shows another embodiment of the above, and (a) and (b) are explanatory diagrams.

FIG. 3 shows still another embodiment of the above, and (a)
(B) is an explanatory view.

FIGS. 4A and 4B are sectional views showing the solenoid valve according to the first embodiment; FIGS.

FIG. 5 is an explanatory diagram of another embodiment of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flow path opening / closing valve for hot water 2 Flow path opening / closing valve for cold water 3 Shower nozzle 4 Callan 5 Flow rate adjustment valve 6 Opening / closing valve on shower nozzle side 7 Opening / closing valve on Karan side 8 Temperature sensor 9 Water stopcock 10 Drain stopcock 11 Plunger 12 through hole

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takayuki Ikeda 1048 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works Co., Ltd. F-term (reference) 2D032 FA08 2D060 BB01 CA04 CA20

Claims (3)

[Claims] 1. A flow path opening / closing valve for hot water and a flow path opening / closing valve for cold water, a flow control valve downstream of these for adjusting the flow rate of hot water or water or a mixed hot water thereof, and a flow control valve A shower nozzle and a curan that discharge hot and cold water from
A method for controlling a faucet, comprising: an on-off valve that opens and closes a passage between a flow control valve and a shower nozzle; and an on-off valve that opens and closes a passage between a flow passage adjustment valve and a curan, When switching between hot water and cold water by an on-off valve, the flow rate is controlled by a flow control valve, and one of the hot- or cold-water flow path on-off valves is closed, and then the other is opened. How to control the tap. 2. A temperature sensor is provided on the upstream side of the shower nozzle and the curan, and the discharge from the shower nozzle is switched to the discharge from the curan based on a detection result of a temperature equal to or higher than a predetermined value, and the discharge is performed after a set time. The method of controlling a faucet according to claim 1, wherein the faucet is stopped. 3. The flow path on-off valve and the on-off valve include a plunger actuated by electromagnetic force and a diaphragm which is closed by pressing the plunger and opened by water pressure when the plunger is retracted. The diaphragm consists of a solenoid valve with a through hole that can be opened and closed by a plunger.A water stopcock is provided upstream of the faucet, a drainage plug is provided at the bottom, and all valves are opened. 2. The method according to claim 1, wherein the air is supplied from the open side of the diaphragm through the through hole of the diaphragm to supply air to drain the water from the drain plug.
The control method of the faucet described in the above.