JPH0439533A - Hot water and cold water mixing device - Google Patents

Abstract

PURPOSE:To shorten a changing-over time between a hot water feeding and a cold water feeding by a method wherein a hot water feeding circuit and a cold water feeding circuit for mixing hot water are independently provided. CONSTITUTION:In the event that mixed hot water is fed out of a cock 33, cold water and hot water fed out of a cold water feeding pipe 16 and a hot water feeding pipe 18 are mixed at a mixing valve 20. The mixing operation is carried out by comparing a set temperature set by a setting device 29 with a temperature of mixed water detected by a temperature detector 22 by a control device 32 and by driving a mixing valve driving device 21 in response to a driving amount corresponding to a difference value. Feeding out/stopping water of the mixed hot water are carried out by electrically opening or closing a mixed hot water feeding-out or stopping valve 23 by a mixed hot water feeding-out or stopping valve driving device 24. In the event that the cold water is fed out, the cold water is fed from a secondary side of a check valve 17 at a cold water feeding pipe 16 through a cold water distributing pipe 26 to a cold water stopping valve 25 and the mixed hot water feeding and stopping valve driving device 24 is electrically opened or closed so as to perform the cold water feeding/cold water stopping operation.

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 for adjusting the ratio of hot water to water, 3 is a mixing valve driving device for driving the mixing valve 2, and 4 is for controlling the temperature of the mixed water. A temperature sensor detects temperature, 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 5. Reference numeral 7 denotes a setting device for setting the temperature of mixed hot water and instructing hot water to be turned on and off, and a controller for controlling the mixing valve drive device 3 and the water stop valve drive device 6 based on the signal from the temperature detector 4 and the instruction from the setting device 7. It consists of 8 containers.

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, in the above-mentioned configuration, since the temperature is controlled by the mixing valve 2, there is an inconvenience that it takes time to switch between cold and hot water.

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 does not take much time to switch between hot and cold water.

Means for Solving the Problems In order to solve the above problems, the hot water mixing device of the present invention includes a mixing valve that provides check valves in the middle of the hot water supply pipe and the water supply pipe to adjust 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 water, a run section, and a dispensing unit for discharging the mixed hot water from the run section.
A hot water switch for instructing tap water, a mixed hot water tap water stop valve for discharging mixed hot water, a mixed hot water tap water stop valve driving device for electrically driving the mixed hot water tap water stop valve, and the water supply pipe. A water pipe that branches from the secondary side of the check valve on the side and reaches the run-off part, a water switch that instructs to stop the water from flowing out of the run-off part, and the water outflow water stop valve is electrically driven. It has a controller that controls a cold water stop valve drive device, the mixing valve drive device, a temperature sensor, a hot water switch, a water switch, a mixed hot water water stop valve drive device, and a cold water stop valve drive device, The hot water supply circuit for mixed hot water and the water supply circuit are configured independently.

Furthermore, the hot water mixing device of the present invention is provided with a water pipe check valve between the mixing valve and a branch point of the water pipe on the secondary side of the check valve on the water supply pipe side.

Effect: According to the hot water mixing device of the present invention, the hot water supply circuit for the mixed hot water and the water supply circuit are provided independently, so that the time required to change the temperature between the hot water and the hot water can be shortened. .

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. 2o, a mixing valve drive device 21 that drives the mixing valve 20, a temperature detector 22 that detects the temperature of the mixed hot water, a mixed hot water tap water stop valve 23 that performs hot water supply/stopping of the mixed hot water, and a mixed hot water tap water shutoff valve 20 that drives the mixing valve 20; A mixed hot water tap 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 stop valve 25 that outputs/stops water. and water stop valve 26
The water output water stop valve drive device 27 that drives the water supply, and the check valve 28 for water piping installed in the middle of the water conduit to the mixing valve 2Q on the secondary side of the branch point to the water piping 26, and the mixed hot water temperature setting. A setting device 29, a hot water switch 30 for instructing the mixed hot water to start/stop, a water switch 31 for instructing the water to start/stop, and the setting device 29.
and temperature detector 22, hot water switch 30, water switch 3
Based on the signal from 1, the mixing hot water tap water stop valve drive device 24
, water stop valve drive device 27, mixing valve drive device 21,
It is composed of a controller 32 for controlling the drive, a cold water stop valve 26 , and a water conduit 34 for mixed hot water and water from the mixed hot water tap water stop valve 23 to the power run section 33 . Next, the operation will be explained. When mixed hot water is discharged from the drain section 33, water and hot water are mixed at the mixing valve 2Q from the water supply pipe 16 and the hot water supply pipe 18, respectively. For mixing, the controller 32 compares the set temperature set by the setting device 29 and the mixed water temperature detected by the temperature detector 22, and the mixing valve driving device 21 drives the driving amount corresponding to the deviation amount. . The mixed hot water starts/stops,
Mixing hot water tap water stop valve 23 is connected to mixing hot water tap water stop valve driving device 24
This is done by electrically opening and closing.

When water is discharged from the drain section 33, the water is supplied to the water supply pipe 1.
The water is led from the secondary side of the check valve 17 on the 6 side to the water outflow water stop valve 25 through the water pipe 26, and the mixed hot water exit water stop valve drive device 24
Water is turned on and off by electrically opening and closing.

In the case of water outflow, the check valve 28 for water piping allows the water supply pipe 1
In addition, by narrowing the inner diameter of the water pipe 26, it is possible to prevent the flow of hot water from flowing into the water pipe 26 from the 8 side. can be prevented.

Effects of the Invention As described above, according to the hot water mixing device of the present invention, the hot water supply circuit for mixed hot water and the cold water supply circuit are provided independently, so that when changing the temperature of hot water using the mixed hot water tapping circuit alone, The time required to switch between hot and cold water can be reduced.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing the configuration 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 tap water stop valve drive device, 25...
...Water stop valve, 26...Water piping, 27...
...Water outflow water stop valve drive device, 28...Check valve for water piping, 3o...Hot water switch, 31...
...Water switch, 32...Controller, 33...
...Karan Department.

Claims (2)

[Claims] (1) A check valve installed 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 drive device that electrically drives the mixing valve, and a mixed water temperature. a temperature sensor that detects the flow of water, a flushing section, a hot water switch that instructs to turn on and off the mixed hot water from the running section, a mixed hot water tap stop valve that turns on and off the mixed hot water, and the mixed hot water tap. A mixed hot water tap water stop valve drive device that electrically drives the water stop valve;
A water pipe that branches from the secondary side of the check valve on the water supply pipe side and reaches the water outflow water stop valve, a water switch that instructs to stop the water outflow from the water supply pipe, and the water outflow water stop valve. A cold water stop valve drive device that electrically drives the water stop valve, and a water stop valve drive device that controls the mixing valve drive device, the temperature sensor, the hot water switch, the water switch, the mixed hot water water stop valve drive device, and the cold water stop valve drive device. A hot water mixing device that has a controller and has separate hot water circulation circuits and water circulation circuits for mixed hot water. (2) Check valve on the water supply pipe side The hot water mixing device according to claim 1, further comprising a water pipe check valve between the branch point of the water pipe on the secondary side and the mixing valve.