JPS62118176A - Hot water mixing device - Google Patents

Abstract

PURPOSE:To stop the discharge of mixed water when a control valve becomes uncontrollable, and to obtain a desired hot water condition, by providing a shut-off valve which may be closed upon power failure, and by electrically performing the change-over into the discharge end of the mixed water. CONSTITUTION:By comparing a temperature set by a setting unit 31 with a temperature detected by a temperature detector 22, a controller transmits a signal in accordance with the deviation between both temperatures to a mixing valve drive device, to increase and decrease the opening degrees of the hot water section 13 and water valve section 16 of a mixing valve in a reverse proportional manner, so that the volume of hot water is at once controlled to a designated amount. As to the discharge port, a selector valve 29 is electrically driven to automatically change over the passage of hot water to an end which is set by the setting unit.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides an electrically driven hot water mixing device that electrically controls the mixing ratio of hot water and water and the discharge state of the mixed water to discharge hot water under desired hot water supply conditions. Regarding.

2. Description of the Related Art Conventionally, there has been a hot water mixing device of this type as shown in FIG.

In Figure 2, a mixing valve 1 that adjusts the mixing ratio of hot water and water
, a drive device 2 that drives this mixing valve 1, a temperature detector 3 that detects the temperature of the mixed water, a flow rate sensor 4 that detects the flow rate, and an electric drive that controls the supply/stop of the mixed water and the instantaneous flow rate. There is a control valve 5, a setting device 7 for setting the temperature, instantaneous flow rate, etc. of the mixed water, and a controller 8 for controlling the mixing valve 1 and the control valve 5 based on the signals from the temperature detector a and the flow rate sensor 4.
Regarding the temperature of the mixed water, the temperature detected by the temperature detector 3 and the temperature set by the setting device 7 are compared, and the opening degree of the hot water side of the mixing valve 1 is determined based on the amount of deviation. The mixed water temperature is controlled to be equal to the set temperature by changing inversely proportionally. To dispense or stop the mixed water, the control valve 5 is electrically opened and closed, and the instantaneous flow rate value set by the setting device 7 is compared with the signal from the flow rate sensor 4 that detects the instantaneous flow rate value of the mixed water. The device adjusts the opening degree of the valve 5, and when the desired state quantity of mixed water is set with the setting device 7, the setting is immediately set.Problems to be Solved by the InventionHowever, with the above configuration, the control If the control valve becomes uncontrollable due to a malfunction in the electrical system surrounding the valve 5 and the control valve 5, or a power outage during hot water dispensing, there is no way to stop the discharge, and the hot water will flow out unnecessarily. It is also dangerous when hot water is being tapped.

The present invention solves such conventional problems by providing a shutoff valve that can be closed in the event of a power outage, closing the discharge in an emergency, and electrically driving the switching of the discharge destination of the mixed water to the shower or flush. The purpose is to provide a fully automatic compact hot water mixing device.

Means for Solving the Problems In order to solve the above problems, the hot water mixing device of the present invention includes a hot water flow path, a water flow path, a hot water valve portion that changes the opening area of the hot water flow path, and a water flow path. a mixing valve configured with a water valve section that changes the opening area of the mixing valve; an electric mixing valve drive device that independently drives the hot water valve section and the water valve section of the mixing valve; and a mixing valve downstream of the mixing valve. a temperature detector that detects the temperature of water;
A flow rate sensor that detects the flow rate of mixed water, a shutoff valve that closes a mixed water flow path, a switching valve that switches the discharge of mixed water between shower and flush, and a switching valve drive device that electrically drives the switching valve. , a setting device for setting the discharge destination of mixed water and hot water supply conditions, and a controller for controlling the mixing valve drive device and the switching valve drive device based on signals from the temperature detector, flow rate sensor, and setting device. There is.

Operation With the above configuration, the controller compares the temperature set by the setting device with the temperature detected by the temperature detector, and depending on the deviation amount, the controller sends a signal to the mixing valve driving device to activate the hot water valve part of the mixing valve. , the valve opening of the water valve is inversely increased or decreased to control the mixed water temperature to be equal to the set temperature. The valve openings of the hot water and water valves are proportionally increased or decreased to instantly control the amount of hot water that is directed, and for the discharge port, the switching valve is electrically driven to adjust the amount set by the setting device. In other words, all hot water supply conditions can be automatically obtained electrically by simply pressing a button on the setting device.If control is lost due to an electrical system failure or power outage, or mixed water is being discharged, if there is,
By automatically or manually closing the shutoff valve, the discharge can be stopped, and in the event of hot water being dispensed at a high temperature due to an erroneous operation or malfunction, the shutoff valve can be immediately shut off to avoid danger.

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

In FIG. 1, a hot water flow path 9, a water flow path 10, a hot water valve section 13 consisting of a hot water side valve body 11 and a hot water side valve seat 12 provided in the hot water flow path 9, and a water side provided in the water flow path 10 are shown. Valve body 14 and water side valve seat 1
5, and a mixing valve driving device (hot water side 18 ．．
a flow rate sensor 21 that is provided on the water side 19) and detects the instantaneous flow rate of the mixed water in the mixed water flow path 20 downstream of the mixing valve 17;
A temperature detector 22 that detects the mixed water temperature and a mixed water flow path 2
A shutoff valve 25 composed of a shutoff valve body 23 and a shutoff valve seat 24 for closing the water is provided, and the mixed water flow path 20 can be closed by manual operation of a shutoff handle 26 connected to the shutoff valve body 23. A switching valve 29 that switches the discharge of mixed water to the shower 27 and the flush 28, and a switching valve driving device 30 that electrically drives the switching valve 29 are provided downstream of the shutoff valve 25,
A setting device 31 for setting hot water supply conditions such as a discharge destination of mixed water, temperature, and instantaneous flow rate, the flow rate sensor 21, and a temperature detector 22.
and a controller 3 that controls the mixing valve drive device 18, 19 and the switching valve drive device 30 based on the signals from the setting device 31.
It consists of 2.

With the above configuration, by operating the button on the setting device 31, the controller 32
controls the mixing valve 17 and the switching valve 29 to automatically obtain mixed water equal to the set hot water supply conditions, and also controls the flow rate sensor 2.
When the signal No. 1 indicates an instantaneous flow rate value of 0, a signal is sent to the mixing valve drive device 18.19, and the hot water side valve body 11 and the water side valve body 14 are activated.
control so that they operate in the direction of closing both. Also,
When the discharge destination is set to the shower 27, the controller 32 energizes the switching valve drive device 30 to open the switching valve 29 to the shower side, and when the setting is to click, the controller 32 stomps the energization to the drive device 30, and then switches. The valve 29 is configured to open on the flush side. Therefore, in this embodiment, if the control becomes uncontrollable due to a power outage during use, the discharging of mixed water can be temporarily stopped by operating the closing handle 26 to prevent wasteful discharge of hot water. Since the mixing valve 17 stops at the position immediately before the power outage, if the temperature is appropriate, the hot water can be dispensed and stopped using the closing handle 26 and continued use.

When the power goes out, after operating the closing handle 26 and stopping the discharge of mixed water, if the power is turned on again, the flow rate sensor 2
The signal No. 1 detects the flow rate value O, and since the controller 32 is configured to control the valve position of the mixing valve 17 to close from the valve position immediately before the power outage, the controller 32 notices that it has been energized and closes the closing handle. When the opening operation of 26 is performed, the mixed water will not be discharged, and dangers such as when the hot water supply condition during a straight power outage is hot water discharge can be avoided. In addition, the switching valve 29 is normally configured to discharge to the cooker 28 side, and the shower 27
Since the switching valve driving device 30 is configured to be energized to control the switching valve only when switching to the shower 27, power consumption in the switching valve driving device 30 can be reduced, and if a power outage occurs while the shower 27 is in use, the shower 28 is automatically switched on. It is safe to switch to discharge.

Effects of the Invention As described above, the hot water mixing device of the present invention provides the following effects.

(1) By simply pressing a button on the setting device, everything from the start of hot water supply to the mixed water temperature, instantaneous flow rate, and discharge destination are automatically controlled, allowing the desired hot water supply state to be achieved with a single touch. - (2) If control becomes uncontrollable due to a power outage or failure of the electrical system during use, the shutoff valve can be used to temporarily stop the hot water supply, thereby preventing wasteful release of hot water.

(3) When hot water is inadvertently discharged due to malfunction or operation, danger can be avoided by manually operating the water shutoff valve.

(4) The hot water supply status can be monitored and displayed using signals from the temperature detector and flow rate sensor.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a drought water mixing device according to an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional pumped water mixing device. 9...Hot water flow path, 10...Water flow path, 13.
Mark/Hot water valve section, 16...Water valve section, 17...Mixing valve, 18°19...Mixing valve drive device, 21...
...Flow rate sensor, 22...Temperature detector, 25
......Shutoff valve, 27...-Shower, 28.
...Current, 29...Switching valve, 30...
...Switching valve drive device, 31...Setting device, 32...
...Controller. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 7 β

Claims (3)

[Claims] (1) A mixing valve consisting of a hot water flow path, a water flow path, a hot water valve section that changes the opening area of the hot water flow path, and a water valve section that changes the opening area of the water flow path; an electric mixing valve drive device that independently drives the valve part and the water valve part;
A temperature detector that detects the temperature of the mixed water downstream of the mixing valve, a flow rate sensor that detects the flow rate of the mixed water, a shutoff valve that closes the mixed water flow path, and a switch for switching the discharge of the mixed water between shower and flush. a switching valve, a switching valve driving device that electrically drives the switching valve, a setting device that sets the discharge destination of the mixed water and hot water supply conditions, and A hot water mixing device consisting of a controller that controls a mixing valve drive device and a switching valve drive device. (2) When the signal of the flow rate sensor detects a flow rate of 0, the controller sends a signal to the mixing valve driving device, and the hot water valve part of the mixing valve,
The hot water mixing device according to claim 1, wherein the water valve portions are controlled to close together. (3) The hot water mixing device according to claim 1, wherein the switching valve is configured to switch to shower discharge when the switching valve driving device is energized, and switch to flush discharge when a power outage occurs.