JPH0827014B2 - Hot water mixing device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot and cold water mixing apparatus for controlling supply and stop of hot water.

2. Description of the Related Art Conventionally, as a device related to this kind of hot and cold water mixing device, there is one shown in FIG. (For example, Jitsuko Sho 61-24
The water supplied from the water supply passage 1 is supplied to the water supply target through the solenoid valve 2. In the middle of the water supply passage 1, there is provided a flow rate detecting means 3 for detecting a water flow rate and outputting a flow rate signal corresponding to the water flow rate. When the desired flow rate integrated value is set by the setting device 4 and water supply is started, the flow rate detected by the flow rate detecting means 3 is integrated by the controller 5, and the solenoid valve is reached when the flow amount integrated value set by the setting device 4 is reached. 2 is closed and a certain amount of water is poured into the bathtub.

Problems to be Solved by the Invention However, the above configuration has the following problems.

(1) It is necessary to boil the supplied water in a bath kettle to an appropriate temperature, which is inconvenient and time consuming.

(2) Even when there is no person, it is inconvenient because the hot water supply cannot be started or stopped at a certain time, and the hot water cannot be supplied on time.

It should be noted that there is a conventional mixing faucet that adjusts the mixing ratio of hot water and water, and a mechanism of a water meter is incorporated in this mixing faucet, and when a predetermined integrated flow rate value is reached, as in the above-mentioned conventional example. There were some that stopped the supply of mixed hot water, but the inconvenience of not being able to supply hot water on time was the same.

The present invention solves such a conventional problem, and an object of the present invention is to provide a hot and cold water mixing apparatus capable of supplying hot water at regular intervals.

Means for Solving the Problems In order to solve the above problems, a hot and cold water mixing apparatus of the present invention includes a flow control valve for supplying / stopping mixed hot water, and a flow control valve for electrically driving the flow control valve. Drive means, switching valve for switching hot water supply target of mixed hot water, time setting means for setting time, controller for controlling flow control valve according to setting of this time setting means, and setting of time setting means by this controller When the hot water is supplied at regular intervals in accordance with the above, the switching valve is configured to switch the switching valve to a predetermined hot water supply target.

The present invention has the above-described configuration, in which the flow control valve supplies and stops the mixed hot water, and the controller controls the flow control valve through the flow control valve drive means according to the setting of the time setting means, and when hot water is supplied at regular intervals. The hot water is supplied on time by switching the switching valve to a predetermined hot water supply target.

Embodiments Embodiments of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, the hot water and the water supplied through the hot water flow path 6 and the water flow path 7 are introduced into the valve frame body 8, and the pressure is equalized by a pressure balance valve 9 for balancing the pressure of the hot water and the water. To be done. Downstream of the pressure balance valve 9, there is provided a control valve 10 which also serves as a hot water mixing valve and a flow rate control valve. This control valve 10
Is a hot water valve 14 including a hot water valve seat 11, a hot water valve body 12 and a valve shaft 13.
And a water side valve 18 including a water side valve seat 15, a water side valve body 16 and a valve shaft 17.
It is composed of and. And hot water valve 14 and water valve 18
Is a water-side motor 19 and a water-side motor 20 which are electric driving means.
Driven by the reduction gears 21 and 22 and the linear motion conversion mechanisms 23 and 24. The temperature of the mixed hot water whose ratio is adjusted by the control valve 10 and mixed is detected by the thermistor 25 and the flow rate is detected by the flow rate sensor 26. The signals of the thermistor 25 and the flow rate sensor 26 are transmitted to the controller 27, and the controller 27 controls the hot water side motor 19 and the water side motor 20 by the signal of the setting device 28 which is also transmitted. The setting device 28 includes a switch 29 for supplying a predetermined mixing hot water temperature, a mixing flow rate, and an integrated value to the mixing flow rate, and a switch 3 for lowering the mixing hot water temperature.
0, switch 31 to raise, switch 3 to select the size of the flow rate
2, a switch 33 for stopping the supply of the mixed hot water, a time control start switch 34 which is a time setting means, and a time adjustment setting unit 35,
A display unit 36 for displaying the temperature of the mixed hot water, the mixed flow rate, the time, etc. is provided. For the mixed hot water temperature, the mixed flow rate, and the integrated value of the mixed flow rate, it is possible to set a value when the switch 29 is operated and a value at the time of hot water supply by the presetter 37 which is signaled to the setter 28. it can. Further, the setting device 28 is provided with a changeover switch 38 which is a changeover control means, and an electric changeover valve 39
The mixed hot water supplied through the mixed hot water flow path 42 to the discharge port 40 to the bathtub and the shower 41 can be switched and used. FIG. 2 is a control block diagram of the main part of this embodiment. The time adjustment setting section 35 of the setting device 28 is
And a time setting unit 45 and a comparison unit 46. The signal of the preset device 37 is stored in the storage unit 47 in the controller 27,
It is taken out by the memory take-out section 48. The signal of the flow rate sensor 26 is compared with the set mixed hot water flow rate in the flow rate comparison section 49, and also integrated in the flow rate integration section 50 and compared with the set value in the integrated flow rate comparison section 51. The signal of the thermistor 25 is compared with the set value in the mixed hot water temperature comparison unit 52. These signals are amplified and adjusted by the adjustment unit 53,
The hot water side motor 19 and the water side motor 20 are controlled. Switches and displays of other setting devices, and corresponding controllers 27
The control block inside is omitted.

Next, the operation of this embodiment will be described. To start hot water supply from a state where hot water supply is stopped, first press the switch 29 of the setting device 28. Then, the memory extractor 48 is used to preset 37
Then, the contents set in and stored in the storage unit 47 are taken out. For example, signals are taken out such as a mixed hot water temperature of 42 ° C., a mixed flow rate of 12 l / min, and an integrated value of the mixed flow rate of 200 l. At the same time, the controller 27 operates to open the hot water side valve 14 and the hot water side valve 18, and the mixed hot water starts to be supplied from the discharge port 40. Immediately the thermistor
The signal of 25 and the signal of the flow rate sensor 26 are compared with the set value taken out by the memory take-out section, and the mixed hot water temperature is adjusted to 42 ° C. and the mixed flow rate is adjusted to 12 l / min. At the same time, the signals of the flow rate sensor 26 are integrated by the flow rate integrating unit 50, and when the set value is reached, the hot water side valve 14 and the water side valve 18 are closed and the hot water supply is stopped. When the switch 33 is pressed before the accumulated flow rate reaches the set value of 200 l, hot water supply is stopped and the accumulated value is returned to zero. If you want to switch the outlet 40 to the bathtub and the shower 41 while hot water is being supplied, select the switch
By operating 38, the user can arbitrarily switch the hot water supply destination. If you want to get hot water on time, set the time
Set the time you want to start hot water supply with 45, and set the content you want to take out hot water with the preset device 37 when the scheduled time comes. For example, if a mixed hot water temperature of 45 ° C., a mixed flow rate of 20 l / min, and an integrated value of mixed flow rate of 200 l are set, this set value is stored in the storage unit. When the time control start switch 34 is turned on, the hot water supply mode is set, and the hot water side valve 14 and the water side valve 18 are in a closed state and wait for the fixed time to come. When the scheduled time arrives, hot water is supplied at the set mixed hot water temperature and mixed flow rate as in the case of operating the switch 29. At this time, the switching valve 39 automatically switches to the discharge port 40 of the bathtub so as not to accidentally eject the mixed hot water from the shower 41. In this example, the mixed water is supplied to two locations,
The control inside the controller 27 is simple, but if there are many hot water supply destinations and it is desired to select a plurality of hot water supply destinations at the time of hot water supply, the presetting device 37 can be used. Hot water supply is automatically stopped when the integrated value of the mixed flow rate reaches the set value. Therefore, by setting the time to hot water supply in the time adjustment setting unit 35 and simply turning on the time control start switch 34, when the user leaves the place on time, a suitable amount of hot water will be provided. It can be automatically placed in the bathtub 43. The advantage of using the hot and cold water mixing valve to supply hot water on time is that water heaters that boil water during a limited time period of the day, such as water heaters that use electricity at midnight and solar water. Great when used. That is, in the case of a midnight power water heater or a solar water heater, since the boiled hot water is stored in the tank, the heat radiation loss is large. If you mix it with water before using it and store it in the bathtub 43 as a low temperature,
The amount of heat lost before use can be greatly reduced.
Of course, there is also an advantage in terms of convenience that hot water can be supplied on time. Further, the advantage of reducing the amount of heat loss is the same as in the method of making hot water in a bathtub first and filling it with water at the time of use to achieve an appropriate temperature, which is often done in a hot water supply system using an instantaneous water heater. Furthermore, at the time of hot water supply on a regular basis, the hot water supply destination is automatically switched to the discharge port 40 to the bathtub, so that the problem that the mixed hot water is accidentally discharged from the shower 41 and the hot water is not accumulated in the bathtub can be solved, which is convenient. The mixing device is more effective both in terms of energy saving and energy saving.

The effect of the present embodiment is that the switching valve 39 employs an electrically controlled system, so switching of the hot water supply destination to the bathtub 43 side at the time of hot water discharge can be easily achieved in a controllable manner. Can be mentioned. In addition, since the hot water supply target is the bathtub 43 and the shower 41, it is possible to easily switch the hot water supply destination at the time of hot water discharge on a control basis, and it is possible to achieve the reliable hot water supply to the bathtub without wasting energy. Have.

In the above embodiment, the system in which the switching valve 39 is electrically controlled is taken as an example, but it may be mechanically switched to the bathtub side in conjunction with the operation of the time control start switch 34, for example. Further, although the control valve 10 serves both as a hot and cold water mixing valve and a flow rate control valve, there is also a method of separately providing such a combination of the electromagnetic valve and the mixing stopper described in the section of the prior art.

Effects of the Invention As described above, according to the hot and cold water mixing apparatus of the present invention, the following effects can be obtained.

(1) Even if the user is absent, the hot water supply can be started or stopped when the predetermined time comes, which improves convenience.

(2) Since the hot water is supplied on time by controlling the flow rate control valve according to the setting of the time setting means, it is not necessary to further heat the hot water as in the conventional case, and the hot water can be used immediately.

(3) Since the switching valve is switched to a predetermined hot water supply target at the time of hot water supply, it is possible to reliably supply hot water to the hot water supply target to which the mixed hot water is to be supplied, and to prevent hot water supply to the target other than the target to be supplied by mistake.
Convenience and energy saving effects are further enhanced.

[Brief description of drawings]

FIG. 1 is a partially cutaway sectional view of a hot and cold water mixing apparatus according to an embodiment of the present invention, FIG. 2 is a control block diagram of the apparatus, and FIG.
The figure is a block diagram showing a conventional water supply device. 10: control valve (flow control valve), 19: hot water side motor (electrical drive means), 20: water side motor (electrical drive means),
27 ... Controller (controller, switching valve control means), 28 ... Changeover switch (switching valve control means), 35 ... Time adjustment setting section (time setting means).

Claims (3)

[Claims] 1. A flow control valve for supplying / stopping mixed hot water, a flow control valve driving means for electrically driving this flow control valve, a switching valve for switching the hot water supply target of the mixed hot water, and a time for setting the time. Setting means, a controller for controlling the flow rate control valve according to the setting of the time setting means, and a switching for switching the switching valve to a predetermined hot water supply object at the time of hot water supply according to the setting of the time setting means by the controller A hot and cold water mixing device including a valve control means. 2. The hot and cold water mixing apparatus according to claim 1, wherein the switching valve uses an electrically controlled system. 3. The hot and cold water mixing apparatus according to claim 1, wherein hot water is supplied to a bathtub and a shower.