JPH0443233A - Hot water and cold water mixing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hot water mixing device, and particularly to one provided with a water supply circuit.

BACKGROUND ART In a conventional hot water mixing device 1 shown in FIG. 2, 2 is a mixing valve that adjusts the ratio of hot water to water, 3 is a mixing valve driving device that drives the mixing valve 2, and 4 detects the temperature of mixed water. 5 is a water stop valve that turns on and off water, and 6 is a water stop valve drive device that drives the water stop valve 6. 7 is the mixed water temperature setting and
This is a setting device that issues hot water supply/water shutoff instructions, and is composed of a controller 8 that controls the mixing valve drive device 3 and the water cutoff valve drive device 6 based on the signal from the temperature detector 4 and the instructions from the setting device 7.

Next, in the piping system, a hot water supply pipe 9 and a water supply pipe 10 are connected to the hot water mixing device 1, and a cut-off part 1 is connected to the secondary side of the water stop valve 5.
A mixed water pipe 12 is provided to guide the mixed water up to 1.

Problems to be Solved by the Invention However, the above configuration has the following problems. Since all operations are performed based on electrical signals, there is an inconvenience that it becomes unusable during a power outage.

The present invention is intended to solve such inconveniences, and an object of the present invention is to provide a hot water mixing device that can supply only water even during a power outage.

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 supply pipe and a check valve provided in the middle of the water supply pipe, and a mixing valve that adjusts the mixing ratio of hot water and water. , a mixing valve driving device that electrically drives the mixing valve, a temperature detector that detects the temperature of the mixed hot water, a run section, a hot water switch that instructs to output or stop the mixed hot water from the run section, and a mixing valve. A mixed hot water tap water stop valve for discharging and stopping hot water, a mixed hot water tap water stop valve that electrically drives the mixed hot water tap water stop valve, and a mixing hot water tap water stop valve that electrically drives the mixed hot water tap water stop valve, and a water stop valve for the mixed hot water tap from the mixed hot water tap water stop valve to the above-mentioned run-out part. a water pipe that branches from the secondary side of the check valve on the water supply pipe side and reaches the water supply valve, and a water switch that instructs to stop water flow from the water supply pipe; A cold water tap driving device that electrically drives the cold tap water valve, the mixing valve driving device, a temperature sensor, a hot water switch, a water switch, a mixed hot water tap water stop valve driving device, a controller that controls the valve drive device;
A bypass pipe that branches from the water pipe and reaches the secondary side of the mixed hot water tap water stop valve and the cold water tap water valve, and a water stop valve in the middle of the bypass pipe, and a flow rate on the secondary side of the water stop valve. It is equipped with a control valve.

Operation With this configuration, the hot water mixing device of the present invention can prevent power outage by simply opening the bypass pipe and the stop valve provided in the middle of the bypass pipe, which branches from the water pipe to the secondary side of the water supply valve. Only water can be supplied at any time.

EXAMPLE Hereinafter, a hot water mixing device according to an example of the present invention will be described with reference to the drawings.

In FIG. 1, the hot water mixing device 16 includes a water supply pipe side check valve 17 from the water supply pipe 16, a hot water supply pipe side check valve 19 from the hot water supply pipe 18, and a mixing valve that adjusts the mixing ratio of water and hot water. 20, a mixing valve drive device 21 that drives the mixing valve 2o, a temperature detector 22 that detects the temperature of mixed hot water, a mixed hot water tap water stop valve 23 that performs tapping/stopping of the mixed hot water, and a mixed hot water tap water shutoff valve 20 that drives the mixing valve 2o. A mixed hot water tap water stop valve driving device 24 that drives the valve 23, and a water pipe 26 that branches from the secondary side of the water supply pipe side check valve 17 and leads to a water tap water valve 265 that performs water supply/water shutoff. , water tap water valve 2
6, a water supply valve drive device 27 that drives the water supply valve 26, a mixed water pipe 29 that runs from the mixed hot water supply stop valve 23 to the power run part 28, and a water supply pipe 29 that branches off from the middle of the water pipe 26. A bypass pipe 30 leading to the secondary side of the water supply valve 26 (the run section 28 and the mixed water pipe 29), a water stop valve 31 provided at the base of the run water valve 28, and a water stop valve 31 provided on the secondary side of the water stop valve 31. a flow rate control valve 32 provided in the run unit 28, a setting device 33 for setting the mixed hot water temperature, a hot water switch 34 for instructing the mixed hot water to start/stop, and a water switch 36 for instructing the water to start/stop. Setting device 33, temperature detector 22, hot water switch 34,
It is composed of a controller 36 that controls the driving of the mixed hot water tap water stop valve driving device 24 , the cold water tap water valve driving device 27 , and the mixing valve driving device 21 based on a signal from the water switch 36 .

Next, the operation will be explained. When hot water is discharged from the drain section 28, water and hot water are mixed at the mixing valve 2o from the water supply pipe 16 and the hot water supply pipe 18, respectively. For mixing, the controller 36 compares the set temperature set by the setting device 33 and the mixed water temperature detected by the temperature detector 22, and the mixing valve drive device 21 controls the driving amount corresponding to the deviation amount. drive The mixed hot water is turned on and off by airtightly opening and closing the mixed hot water tap water stop valve 23 by the mixed hot water tap water stop valve driving device 24. When water is to be discharged from the drain section 28, the water is guided from the secondary side of the water supply pipe side check valve 17 through the water pipe 26 to the discharge water tap water valve 26, and the water discharge tap water valve drive device 27 When it is electrically opened and closed, water comes out/stops.

By narrowing the inner diameter of the water pipe 26, it is possible to prevent a change in flow rate that occurs when switching between hot water and cold water when there is a pressure difference between hot and cold water.

With the above configuration, in the event of an abnormality in the mixing valve drive device 21 or a power outage, the water stop valve 31 in the middle of the bypass pipe 30 branching from the middle of the water pipe 26 can be opened and closed manually (or with an electric storage type). By opening the shikaran part 2 with a valve (also available)
Water can be spouted from 8 onwards.

As described above, according to this embodiment, by providing a bypass pipe and providing a water stop valve 31 at the base of the stopper portion 28, a configuration is achieved that has good operability and allows water to flow out even during a power outage.

Effects of the Invention As described above, the hot water mixing device of the present invention has the following effects because the flow control valve is provided on the secondary side of the water stop valve.

(1) In the event of a power outage or an abnormality in the mixing valve drive device, only water can be released by opening the water stop valve.

Q) Operability can be improved by configuring the stopcock at the base of the collar.

(3) By providing a flow rate control valve on the secondary side of the water stop valve, the flow rate can be adjusted even during normal times, power outages, or abnormalities in the mixing valve drive device.

G4) By branching the bypass pipe from the middle of the water piping, it is possible to prevent hot water from being drawn out at an inappropriate temperature due to the position of the mixing valve in the event of a power outage or an abnormality in the mixing valve drive device.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a hot water mixing device according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of a conventional hot water mixing device. 16...Water supply pipe, 18...Hot water supply pipe, 1
7.19...Check valve, 2o...Mixing valve, 21...Mixing valve drive device, 22...
Temperature detector, 23... Mixed hot water tap water stop valve, 24
...Mixed hot water direct ratio valve drive device, 26...
...Water stop valve, 26...Water piping, 27...
・・・・Water output water stop valve drive device, 28・・・・Current part, 29・・・・Mixed water piping, 3o・・・・
Bypass pipe, 31... Water stop valve, 32...
・Flow rate control valve, 34...Hot water switch, 36...
...Water switch, 36...Controller. Name of agent: Patent attorney Shigetaka Awano and 1 other person 2nd
figure

Claims (1)

[Claims] A check valve provided in the middle of a hot water supply pipe and a water supply pipe, a mixing valve that adjusts the mixing ratio of hot water and water, a mixing valve driving device that electrically drives the mixing valve, and a mixing valve that detects the temperature of the mixed water. a temperature sensor, a flushing section, a hot water switch for instructing the discharging and stopping of the mixed hot water from the flushing section, a mixed hot water tap stop valve for dispensing and stopping the mixed hot water, and the mixed hot water tap water shutoff valve. a mixing water tap water stop valve drive device that electrically drives the mixing water tap water stop valve, a mixing water pipe extending from the mixing hot water tap water stop valve to the said run section, and a mixing water pipe branching from the secondary side of the check valve on the water supply pipe side. a water pipe leading to the water stop valve, a water switch that instructs to stop the water from flowing from the drain section, a water stop valve driving device that electrically drives the water stop valve; A mixing valve driving device, a temperature sensor, a hot water switch, a water switch, a mixing hot water tap water stop valve driving device, a controller for controlling the cold water tap water stopping valve driving device, and a controller that controls the water tap water tap branching from the water piping to connect the mixing hot water tap. A hot water mixing device comprising a bypass pipe leading to a secondary side of a water stop valve and a water output water stop valve, a water stop valve in the middle of the bypass pipe, and a flow rate control valve provided on the secondary side of the water stop valve.