JPS62284134A - Hot and cold water mixing device - Google Patents

Abstract

PURPOSE:To supply hot water at a predetermined fixed time by providing a hot and cold water mixing valve which regulates the ratio of hot water and cold water and a controller which controls by opening and closing a flow rate control valve according to a setting by a time setting means. CONSTITUTION:The temperature of hot and cold water mixture the ratio of which is regulated by a control valve 10 is detected by a thermistor 25 and its flow rate is detected by a flow rate sensor 26. According to signals from those sensors and the signal from a setting device, a motor 19 on the hot water side and a motor 20 on the cold water side are controlled by a controller 27. The setting device 28 is provided with a switch 29 which supplies a hot and cold water mixture at a predetermined mixture temperature, mixture flow rate and counted value of mixture flow rates and a start time control switch 34 and a time regulation setting section 35, and it is possible to set the temperature of mixture hot water by a switch 38, the mixture flow rate by a switch 39 and the counted value of mixture flow rates by a switch 40 by means of a switch 38. Lastly, the hot water mixture can be supplied to a bath tub 43 provided with a time setting means.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention Industrial Application Field The present invention relates to a hot water mixing device that mixes hot water and water to obtain an appropriate temperature and controls the supply and stop of the mixed hot water. .

2. Prior Art Conventionally, as a device related to this type of hot water mixing device, the third
There was something like the one shown in the figure. (For example, Jikko Sho 61-2
Publication No. 438) Water supplied from the water supply channel 1 is supplied to the water supply target via the electromagnetic valve 2. In the middle of the water supply channel 1, the water flow rate is detected,
A flow rate detection means 3 is provided that outputs a flow rate signal corresponding to the water flow rate. When you set the flow rate integrated value you want to obtain with the setting device 4 and start water supply, the flow rate detected by the flow rate detection means 3 is integrated in the controller 5, and when the flow rate integrated value set by the setting device 4 is reached, the solenoid valve is activated. 2 and fill the bathtub with a predetermined amount of water.

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

(1) Since only water could be supplied, it was necessary to boil the bath to the appropriate temperature in a bathtub, which was inconvenient and time-consuming.

(2) Even if no one is present, it is inconvenient because it is not possible to supply hot water at a fixed time by starting or stopping water supply at a certain time.

Furthermore, mixing faucets that adjust the mixing ratio of hot water and water have long been available, and a water meter mechanism is incorporated into these mixing faucets, so that when a predetermined integrated flow rate is reached, as in the conventional example described above, There were some that stopped the supply of mixed hot water, but the inconvenience of not being able to supply hot water at a fixed time was the same.

The present invention is intended to solve these conventional problems, and an object of the present invention is to provide a hot water mixing device that can supply hot water at scheduled times.

Means for Solving the Problems In order to solve the above-mentioned problems, the hot water mixing device of the present invention includes a hot water mixing valve that adjusts the mixing ratio of hot water and water, and a hot water mixing valve that is driven by an electric drive means to mix hot water. The flow rate control valve is configured to include a flow rate control valve for supplying and stopping, a time setting means for setting the time, and a controller for controlling opening and closing of the flow rate control valve according to the settings of the time setting means.

Effect of the Invention With the above-described configuration, the mixing valve mixes hot water and water at an appropriate temperature and supplies the mixture to the hot water supply target, and the flow rate control valve supplies and stops the mixed hot water, and controls the mixture according to the settings of the time setting means. The flow rate control valve is opened or closed at a scheduled time via a drive means for the flow rate control valve in the device, thereby supplying hot water at a scheduled time.

Example Embodiments of the present invention will be described below based on the accompanying drawings.

In FIG. 1, hot water and water supplied through the vortex flow path 6 and water flow path 7 are introduced into a valve frame 8, and the pressure is equalized by a pressure balance valve 9 that balances the pressure of hot water and water. Ru.

A control valve 10 that serves as both a hot water mixing valve and a flow rate control valve is provided downstream of the pressure balance valve 9. This control valve 10
The hot water side valve 14 consists of a hot water side valve seat 11, a hot water side valve body 12, and a valve stem 13, a water side valve seat 15, a water side valve body 16, and a valve stem 17.
The water side valve 18 consists of: The hot water side valve 14 and the water side valve 18 are operated by the hot water side motor 19 and the water side motor 20, which are electrical drive means, to reduce the speed of the reduction gear 21.2.
2 and linear motion conversion mechanisms 23 and 24.

The temperature of the mixed hot water whose ratio is adjusted and mixed by the control valve 10 is detected by a thermistor 25, and the flow rate is detected by a flow sensor 2.
He was tested at 6. These thermistor 25 and flow sensor 2
The signal No. 6 is transmitted to the controller 27, and the controller 27 controls the hot water side motor 19 and the water side motor 2o based on the similarly transmitted signal from the setting device 28. The setting device 28 includes a switch 29 for supplying mixed hot water at a predetermined mixed water temperature, mixed flow rate, and integrated value of the mixed flow rate, a switch 30 for lowering the mixed hot water temperature, a switch 31 for increasing the mixed water temperature, and a switch for selecting the magnitude of the flow rate. 32. Switch 3 to stop the supply of mixed hot water
3. A time control start switch 34 serving as time setting means, a time adjustment setting section 35, and a display section 36 for displaying the mixed water temperature, mixed flow rate, time, etc. are provided.

The integrated value of the mixed water temperature, mixed flow rate, and mixed flow rate can be set using the setting device 28.
The preset device 37 is connected to the switch 29 in terms of signal.
The value when is operated and the value when hot water is supplied on time can be determined in advance. The mixed water temperature can be set with a switch 38, the mixed flow rate can be set with a switch 39, and the integrated value of the mixed flow rate can be set with a switch 40. The mixed hot water passes through a mixing vortex flow path 41 and is supplied from a discharge port 42 to a bathtub 43 to which hot water is to be supplied.

FIG. 2 is a control block diagram of the main parts of this embodiment.

The time adjustment setting section 35 of the setting device 28 includes a clock section 44, a time setting section 45, and a comparison section 46. Further, the signal J8- of the brisector 37 is stored in the storage section 47 in the controller 27 and taken out by the storage retrieval section 48. Flow rate sensor 2
The signal No. 6 is compared with the set mixed molten metal flow rate in a flow rate comparison section 49, and is also integrated in a flow rate integration section 5o and compared with a set value in a flow rate integration comparison section 51. The signal from the thermistor 25 is compared with a set value by a mixed hot water temperature comparison section 52. These signals are amplified and adjusted by the adjustment section 53, and the hot water side motor 19 and the water side motor 2
Controls 0. Switches and displays of other setting devices,
Also, the corresponding control blocks in the controller 27 are omitted.

Next, the operation of this embodiment will be described.

To start hot water supply from a stopped state, first press the switch 29 of the setting device 28. Then, the memory retrieval unit 4
At step 8, the contents set by the preset device 37 and stored in the storage section 47 are retrieved.

For example, the mixed water temperature is 42°C, the mixed flow rate is 121/min, and the integrated value of the mixed flow rate is 200/min! The signal is extracted in this way. At the same time, the hot water side valve 14 and the water side valve 1 are controlled by the controller 27.
8 is opened, and mixed hot water begins to be supplied from the discharge port 42. Immediately, the signal of the thermistor 25 and the signal of the flow rate sensor 26 are compared with the set value retrieved by the memory retrieval unit 48,
Adjust the mixing water temperature to 42°C and the mixing flow rate to 127:/min.

At the same time, the signal from the flow rate sensor 26 is integrated by the flow rate integration unit 50, and when it reaches a set value, the hot water side valve 14 and the water side valve 18 are closed to stop the hot water supply. 2001 when the flow rate integrated value is the set value!
If the switch 33 is pressed before reaching , hot water supply is stopped and the integrated value is returned to zero. If you want to have hot water dispensed at a scheduled time,
A time setting section 45 is used to set the time at which hot water supply is to be started, and a preset device 37 is used to set the contents at which hot water is to be dispensed at the scheduled time.

For example, the mixed water temperature is 45°C and the mixed flow rate is 201! /min
, integrated value of mixing flow rate 200/! When set, storage section 4
This setting value is stored in 7. Then, when the time control start switch 34 is turned "on", the hot water dispenser mode enters the scheduled hot water dispensing mode, and the hot water side valve 14 and the water side valve 18 are kept closed while waiting for the scheduled time to arrive. When the set time arrives, hot water is supplied at the set mixed water temperature and mixed flow rate, similar to when the switch 29 is operated, and the hot water supply is automatically stopped when the set integrated value of the mixed flow rate is reached. Therefore, by simply setting the desired time for hot water supply in the time adjustment setting section 35 and turning on the time control start switch 34, the user can have hot water at the appropriate temperature and amount at the scheduled time even if he or she leaves the place. The bathtub 43 can be automatically filled. The advantage of using a hot water mixing valve in a hot water system to supply hot water on a scheduled basis is especially for water heaters that heat water during limited hours of the day, such as water heaters that use electricity late at night or water heaters that use solar heat. Larger when using . In other words, in the case of late-night electric water heaters and solar water heaters, boiled water is stored in a tank, so heat radiation loss is significant. Before using the stored hot water, mix it with water at the time when the water heater reaches boiling point.
If it is stored in the bathtub 43 at a low temperature, the amount of heat lost until it is used can be greatly reduced. Of course, there is also the advantage of convenience by being able to supply hot water at scheduled times. In addition, this is often done with hot water systems using instant water heaters.
Compared to the method of first filling a bathtub with hot water and then filling it with water to bring the bathtub to the appropriate temperature, it has the same advantage in terms of reducing heat loss.

In addition, in this embodiment, the water stop during scheduled hot water supply is performed by the flow rate sensor 2.
A quantitative water stop method was adopted in which the signal No. 6 is integrated by the flow rate integration unit 50 and compared with the set value. There is also a method of opening the hot water side valve 14 and the water side valve 18 for a predetermined time to supply hot water. The former has the advantage that the flow rate sensor 26 can also be used to control the mixed flow rate and the integrated flow rate value is not disturbed by fluctuations in hot water pressure and water pressure, and the latter has the advantage that the time measurement can be shared with the clock unit 44 for dispensing hot water at a fixed time. .

The advantage of this embodiment is that the hot water mixing valve is electrically controlled using the control valve 10 driven by the hot water side motor 19 and the water side motor 20, so complex control can be performed.
First of all, it is possible to display the temperature on the display section 36 using the detection signal of the thermistor 25.

Next, the control valve 10, which also serves as a flow rate control valve, is connected to the flow rate sensor 2.
Since the fixed amount of water is stopped using the signal No. 6, it is possible to fill the bathtub 43 with a predetermined amount of mixed hot water even if the hot water pressure and water pressure fluctuate. Further, when hot water is supplied at a scheduled time, the mixed hot water temperature can be supplied at a temperature set in advance by the preset device 37, which has the effect of eliminating the need for special fine adjustment of the temperature.

Furthermore, if instead of fixed-dose tap water, a method is adopted in which hot water supply is stopped after a predetermined period of time has elapsed after starting hot water supply at a fixed time, control can be performed using the clock section 44 of the time adjustment setting section 35, which is a time setting means. This has the advantage of not requiring the use of special sensors.

In this embodiment, a method is used in which the hot water mixing valve and the flow rate control valve are combined, but they may be provided separately.

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

(1) Even if the user is absent, hot water supply can be started or stopped at a predetermined time, increasing convenience.

(2) The current time can be known using the time setting means.

(3) Since hot water can be heated to the appropriate temperature using the hot water mixing valve, once the hot water supply is completed after the scheduled time, you can take a bath or use the bath without taking a long time.

(4) By supplying hot water at an appropriate temperature at a fixed time using a hot water mixing valve, heat radiation loss can be greatly reduced compared to when hot water is kept at a high temperature.

[Brief Description of the Drawings] Fig. 1 is a partially cutaway sectional view of a hot water mixing device in an embodiment of the present invention, Fig. 2 is a control block diagram of the device, and Fig. 3 is a control block diagram of the device.
The figure is a configuration diagram showing a conventional water supply device. 10... Control valve (hot water mixing valve, flow rate control valve),
19...Hot water side motor (electric drive means), 20
...Water side motor (electric drive means), 27...
. . . Controller, 35 . . . Time adjustment setting section (time setting means). Name of agent: Patent attorney Toshio Nakao and 1 other person10
--Ichirei 1F#Ben 271 --Gekakusakuki 35~-Ichitsuyakutai-setsu raftedatekan 3rd figure?

Claims (5)

[Claims] (1) A hot water mixing valve that adjusts the mixing ratio of hot water and water, a flow control valve that supplies and stops mixed hot water, an electric drive means that drives this flow control valve, and a time setting means that sets the time. and a controller that opens and closes the flow control valve via the electric drive according to the setting of the time setting means. (2) The hot water mixing device according to claim 1, wherein the hot water mixing valve is electrically controlled. (3) The hot water mixing device according to claim 1, wherein the flow rate control valve has a quantitative water stop function. (4) The hot water mixing device according to claim 1, which supplies mixed hot water at a predetermined temperature during scheduled hot water supply. (5) The hot water mixing device according to claim 1, wherein the controller opens the flow rate control valve for a predetermined time to supply a predetermined amount of hot water.