JPS61125533A - Controlling device for mixing of hot water and water - Google Patents

Abstract

PURPOSE:To provide a safe hot water and mixing control device by controlling to forcibly stop a mixing valve by a timer means until high temperature hot water can be supplied upon resupplying to use mixed hot water. CONSTITUTION:Ordinarily, a mixing valve 3 is controlled to adjust the hot water temperature in accordance with a deviation signal so that the temperature of mixed hot water becomes equal to the set hot water temperature, and mixed hot water of the set hot water temperature. However, when mixed hot water is not used but is resupplied after the lapse of a long time, it is detected that mixed hot water has begun to flow by flow quantity detection means 12, and timer means 13 is started. When comparison means 15 detects that an output signal of timer means 13 is smaller than the timer set value of timer setting means 14, a stop signal is outputted to actuation quantity setting means 17 so as not to actuate the mixing valve 3. When the output value of timer means 13 becomes larger than the timer set value, the mixing valve 3 carries out adjustment of the hot water temperature control. Thus, by forcibly stopping the operation of the mixing valve 3 for a predetermined period of time, hot water 3 is not supplied suddenly.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hot water mixing control device that adjusts the mixing ratio of water and water to obtain an appropriate temperature.

Conventional technology A conventional hot water mixing control device of this type is shown in FIG.

In FIG. 3, 1 is a water supply port, 2 is a mixing outlet, and 3 is a mixing valve for adjusting the mixing ratio of hot water and water. The mixing valve 3 includes a water side valve 3o% intestinal side valve 3b, and hot water and water side valves 3a and 3bt'.
A spring 3c biases inward.

3d, and a shaft 3e to which the water side valve 3a and hot water side valve 3b are fixed. A roller 4 is attached to the tip of the shaft 3e and is slid over the cam 5.
be in contact with Reference numeral 6 denotes a driving means (for example, a motor) that fixes the cam S to the driving shaft. A heat source means 7 supplies hot water to the mixing valve 3 through a pipe 8. Reference numeral 9 represents a mixed water temperature detection means for detecting the mixed water temperature, and 1o represents a mixed water temperature setting means. 11
is a control device which compares the output signals of the mixed hot water temperature detecting means 9 and the mixed hot water temperature setting means 10 and energizes the driving means 6.

Next, the operation will be explained. The mixed water temperature detected by the mixed water temperature detection means 9 and the setting value of the mixed water temperature setting means 10 are controlled by the control device i.
11, and the driving means 6 is energized. When the drive means 6 is energized, the valve position of the mixing valve 3 changes via the cam 5, and the mixing ratio of hot water changes.

In this way, the mixing valve 3 is adjusted via the control device [11] so that the hot water temperature is equal to the set temperature.

The problem that the invention aims to solve However, the above configuration has the following problems.

When the mixed hot water is opened and stopped for a long time, the temperature of the hot water inside the pipe 8 from the heat source means 7 to the mixing valve 3 decreases due to heat radiation loss due to the lack of water supply. Next, when the user starts dispensing hot water to use hot water at a certain set temperature, the temperature of the supplied hot water is adjusted until high temperature water comes out from the heat source means 7. Low temperature hot water and water from the pipe 8 yen are mixed by the mixing valve 3. . Therefore, when the user sets a hot water temperature other than the water temperature, the mixing valve a opens the hot water side. However, when the hot and cold water in the pipes is drained out, hot water suddenly enters the mixing valve 3, and vice versa.
Even if you try to close the hot water side and open the water side, the temperature cannot be adjusted to the set temperature instantly. As a result, users suddenly have to use hot water at a high temperature, which is extremely dangerous. Also, using mixed hot water in the shower may pose life-threatening risks such as burns.

The present invention has been made in view of this point, and an object of the present invention is to provide a safe hot water mixing control device that has a simple configuration and does not use P8iIh.

Means for Solving the Problems In order to solve the above problems, the present invention provides a mixing valve for adjusting the mixing ratio of hot water and water, a driving means for energizing the mixing valve, and energizing the driving means. energizing amount setting means for setting the mixed flow rate, flow rate detection means for detecting the mixed flow rate, timer means activated by an output signal of the flow rate detection means, and a timer setting a timer value to be compared with the output signal of the timer means. and a comparison means for comparing the output signal of the timer setting means and the timer means and outputting a stop signal to the energizing amount setting means if the output signal of the timer means is smaller than the timer setting value. ing.

Operation According to the above-described configuration, the present invention first detects that the user has tapped the hot water using the flow rate detection means and starts the timer means. The hot water temperature adjustment control by the mixing valve is forcibly stopped in order to discharge the cold and hot water clogged in the piping of the mixing valve ratio from the heat source means until a certain period of time has elapsed. When high temperature water starts to be supplied to the mixing valve after a certain period of time has elapsed, the stop control of the mixing valve is released. In this way, the danger of users suddenly using boiling water is prevented.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. FIG. 1 is a system diagram showing an embodiment of the hot water mixing control device of the present invention, and FIG. 2 is a control block diagram of the same device.

In FIGS. 1 and 2, the same numbers as those in FIG. 3 are given the same numbers. In FIG. 1, reference numeral 12 denotes a flow rate detection means, which determines whether the user has started using the mixed hot water based on whether the flow rate value of the mixed hot water has exceeded a predetermined value.

In FIG. 2, numeral 13 is a timer means which is activated when the flow rate detection means 12 detects that the user has started using the mixed hot water. 14 is a timer setting means for setting a timer value to be compared with the output signal of the timer means 13; 15 is a means of comparison,
The output signals of the timer means 13 and the timer setting means 14 are compared. 16 is a deviation detecting means which compares the output signals of the mixed hot water temperature detecting means 9 and the mixed hot water temperature setting means 10, calculates a temperature deviation, and outputs it to the energizing amount setting means 17. Biasing amount calculation means 1
7 sets the biasing amount of the drive means 6 based on the deviation signal.

The output section of the comparing means 15 is connected to the energizing amount setting means 17 and outputs a signal for controlling the operation or stopping of the driving means 6. Normally, the mixing valve 3 is controlled to adjust the hot water temperature according to the deviation signal so that the mixed hot water temperature becomes the set hot water temperature, and the user uses the mixed hot water at the set hot water temperature. However, if the patient injects his bowels again after a long period of time without using the mixed hot water, the flow rate detection means 12 detects that the mixed hot water has started flowing and starts the timer means 13. When the comparison means 15 detects that the output signal of the timer means 13 is smaller than the timer setting value of the timer setting means 14, a stop signal is output to the energizing amount setting means 17 in order to prevent the mixing valve 3 from operating. When the output value of the timer means 13 becomes larger than the timer set value, the mixing valve 3 adjusts the hot water temperature.

In this way, the timer maintains the hot water mixing ratio of the mixing valve 3 at the previously set value for a certain period of time, and all of the cold and hot water from the 8 yen pipe is discharged. By forcibly stopping the mixing valve 3 for a certain period of time t, hot water does not suddenly come out, making it extremely safe and easy to use.

Effects of the Invention One more thing that has been described above is the hot water mixing control device (ζ
According to the above, when mixed hot water is re-discharged and used, a timer is used to forcibly stop the mixing valve until hot water can be supplied, the cold and hot water in the piping flows out, and after a certain period of time t has elapsed. By releasing the stop control of the mixing valve, the user does not have to use boiling water or put his or her life in danger, thereby achieving an extremely safe and easy-to-use effect.

[Brief explanation of drawings]

FIG. 1 is an overall system diagram of a hot water mixing control device according to an embodiment of the present invention, FIG. 2 is a control block diagram of the same device, and FIG. 3 is a system diagram of a conventional hot water mixing control device. 3... Mixing valve, 6... Drive means, 12 - Flow rate detection means, 13. Timer means, 14... Timer setting means, 17-. Force amount setting means. Name of agent: Patent attorney Toshio Nakao b) 18 No. 1 Figure 3 Current 4-6...Kyotokui-shu Figure 2 Figure 3

Claims (1)

[Claims] A mixing valve for adjusting a mixing ratio of hot water and water, a driving means for energizing the mixing valve, an energizing amount setting means for setting an energizing amount of the driving means, and a flow rate detecting means for detecting a mixed flow rate. ,
timer means activated by the output signal of the flow rate detection means;
a timer setting means for setting a timer value that compares the output signal of the timer means; and a timer setting means for comparing the output signals of the timer means and the timer setting means, and if the output signal of the timer means is smaller than the timer setting value, the energization is performed. A hot water mixing control device comprising a comparing means for outputting a stop signal to a quantity setting means.