JPS61149677A - Hot and cold water mixing control device - Google Patents

Abstract

PURPOSE:To obtain a hot and cold water mixing control device which is convenient to use and has high safety by stopping a mixing valve on detecting that the temperature of hot water in a pipeline is low, and providing alarm device for notifying that the temperature of hot water supplied is low. CONSTITUTION:There are provided urging amount set means 10 for setting the urging amount of driving means 5 and drop detection means 12 for detecting that hot water in a mixing valve 4 is not used, and the temperature of hot water in a pipeline 2 drops. When the supplied hot water temperature drop detection means 12 is operated to detect that the temperature of hot water in the pipeline 2 is low, a stop signal for stopping the mixing valve 4 is output to the urging amount set means 10. Further, there is provided alarm means 14 for notifying that the temperature of hot water from the mixing valve 4 does not reach a set temperature because the temperature of hot water supplied drops.

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 hot water and water to obtain an appropriate temperature.

2. Description of the Related Art A conventional hot water mixing control device of this type is shown in FIGS. 3 and 4. Figure 3 is an overall system diagram of a conventional hot water mixing control device.
FIG. 4 shows a control block diagram of the device.

In FIG. 3, 1 is a heat source means, and 2 is a pipe for supplying high-temperature hot water to the heat source means 1. 3 is a water pipe and 4 is a mixing valve. 6
energizes the mixing valve 4 by a driving means.

Reference numeral 6 represents a mixed water temperature detection means, and 7 represents a mixed water temperature setting means. 8 is a control section, an example of which is shown in FIG.

In FIG. 2, numeral 9 is a deviation detection means for determining temperature deviation. 10
The biasing amount of the driving means 5 is set by the biasing amount setting means.

Next, the operation will be explained. The deviation detection means 9 calculates a temperature deviation from the mixed water temperature value set by the user and the mixed water temperature detected by the mixed water temperature detection means 6. The biasing amount setting means 1o sets and outputs the biasing amount of the driving means 5 based on the temperature deviation signal.

The mixing valve 4 adjusts the hot water temperature and dispenses mixed hot water at a set hot water temperature.

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

If the mixed hot water is not used for a long time (for example, late at night), the temperature of the hot water in the pipe 2 decreases to about the water temperature.

When the user sets the set temperature to about 40'C and starts dispensing hot water, the temperature of the mixed water does not rise due to the low temperature water in the pipe 2, and the hot water side opens and the water side closes. When the low-temperature water in the pipe finishes being discharged, high-temperature water is suddenly pushed out from the heat source means 1. Since the mixing valve 4 is not in a continuous valve position, users may suffer burns or even endanger their lives if they suddenly use boiling water.

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 hot water.

Means for Solving the Problems In order to solve the above problems, the present invention provides a mixing valve, a driving means, an energizing amount setting means for setting the energizing amount of the driving means, and a heat source means for producing hot water. and the supply water temperature drop detection means detects that the temperature of hot water in the pipe is low, and when the supply water temperature drop detection means detects that the temperature of hot water in the pipe is low, it stops the mixing valve and supplies water. and a notification means for notifying that the water temperature is low.

If the mixed hot water is not used for a long time, the temperature of the hot water inside the pipes will drop. When detected by the supplied hot water temperature drop detection means, the mixing valve is stopped and the user is notified by the notification means that the temperature of the hot water in the pipe is low. As a result, the user does not have to use hot water suddenly, and the reason why the mixed water temperature is low can be notified at the initial stage of hot water dispensing, and troubles caused by the user suddenly raising the mixed water temperature setting can be prevented.

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

FIG. 1 is an overall system diagram of the hot water mixing control device of the present invention.
FIG. 2 is a control block diagram of the device.

In-phase vortex objects in FIGS. 1 and 2 are given the same numbers as in FIGS. 3 and 4. In FIG. 1, numeral 11 is a flow rate detection means for detecting the amount of mixed hot water. In FIG. 2, reference numeral 12 denotes supply water temperature drop detection means, which is composed of mixed hot water temperature detection means 6, flow rate detection means 11, and calculation means 13. 14 is a notification means such as an alarm such as a buzzer or r,
xn lamp or 7-segment numerical code display.

Next, the operation of the configuration of the present invention will be explained.

When the supplied hot water temperature drop detection means 12 detects that the supplied hot water temperature in the pipe 2 is low, a control signal for stopping the hot water temperature adjustment function of the mixing valve 4 is output to the energizing amount setting means 10, and the driving means 5 is stopped. do. The supply hot water temperature drop detection means 12 in FIG. 2 calculates the thermal energy of the mixed hot water from the mixed hot water temperature and the mixed hot water output amount, and determines whether the hot water at the mixing valve 4 exceeds the energy that can be adjusted. It is.

At the same time, when the temperature of the supplied hot water in the pipe 2 is low, the notification means 14 notifies the user that the supplied hot water temperature is low. This prevents the user from setting the mixed hot water temperature to a high temperature setting without knowing that the supplied hot water temperature has decreased, and also prevents the user from using high temperature hot water suddenly.

Effects of the Invention As described above, according to the hot water mixing control device of the present invention, when the supplied hot water temperature drop detection means detects that the supplied hot water temperature is low when the mixed hot water is re-discharged after not being used for a long time, the mixing is started. By controlling the valve to stop and notifying the user using the alarm means, it is easy to use and safe, without using hot water suddenly or without changing the setting to a high temperature without the user knowing the mixed water temperature. It has a highly effective 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, FIG. 3 is an overall system diagram of a conventional hot water mixing control device, and FIG. It is a control block diagram of the same apparatus. 1... Heat source means, 2... Piping, 4...
...Mixing valve, 6...--Driving means, 6...
... Mixed hot water temperature detection means, 7... Mixed hot water temperature setting means, 12... Supply hot water temperature drop detection means (6...
... Mixed hot water temperature detection means, 11 ... Flow rate detection means, 13 ... Calculation means) Name of agent Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2

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 hot water to be supplied to the mixing valve. a heat source means, a pipe connecting the heat source means to the mixing valve, a supply water temperature drop detection means for detecting that the hot water in the mixing valve is not being used and the temperature of the hot water in the pipe has decreased; When the supplied hot water temperature drop detection means is activated and detects that the hot water temperature in the piping is low, it outputs a stop signal to the energizing amount setting means to stop the mixing valve, and the temperature of the hot water discharged from the mixing valve is lower than the supplied hot water temperature. A hot water mixing control device comprising a notification means for notifying that the set temperature has not been reached because the temperature has decreased.