JPH05596B2 - - Google Patents

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.

Conventional technology Conventionally, this type of hot water mixing control device is shown in Figures 3 and 4.
As shown in the figure. FIG. 3 shows an overall system diagram of a conventional hot water mixing control device, and FIG. 4 shows a control block diagram of the same 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. Reference numeral 5 denotes a driving means for energizing the mixing valve 4. 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. Numeral 10 is a biasing amount setting means for setting the biasing amount of the drive means 5.

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 energizing amount setting means 10 controls the driving means 5 based on the temperature deviation signal.
Set and output the bias amount. The mixing valve 4 adjusts the hot water temperature and dispenses mixed hot water at a set hot water temperature.

Problems to be Solved by the Invention However, the above configuration has the following problems.
When 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 mixed hot water temperature does not rise due to the low temperature water in the pipe 2, so 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 an appropriate valve position, the user suddenly has to use boiling water, which can result in burns or even life-threatening situations.

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 a supply water temperature drop detection means that detects that the water temperature in the pipe is low, and stops the mixing valve when the supply water temperature drop detection means detects that the water temperature in the pipe is low. and a notification means for notifying that the supplied hot water temperature is low.

Effect If the mixed hot water is not used for a long time, the temperature of the hot water supplied in 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 hot water temperature in the pipe is low. As a result, the user does not have to use hot water suddenly, and it is possible to notify why the mixed water temperature is low at the beginning of hot water dispensing, thereby preventing troubles such as the user suddenly increasing the mixed water temperature setting value.

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

1 and 2 that are equivalent to those in FIGS. 3 and 4 are given the same numbers. 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 reporting means, such as an alarm such as a buzzer, an LED lamp, or a 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 of 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. . The supply hot water temperature drop detection means 12 in FIG. 2 is an embodiment that 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 energy exceeds the energy that allows the hot water temperature to be adjusted by the mixing valve 4. .

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 hot water mixture is mixed. By stopping the valve and notifying the user using the alarm means, it is easy to use and highly safe, without using hot water suddenly or without changing the setting to a high temperature without the user knowing the mixed water temperature. It's getting an effect.

[Brief explanation of the drawing]

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. FIG. 3 is a control block diagram of the device. 1...Heat source means, 2...Piping, 4...Mixing valve,
5... Drive 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).

Claims (1)

[Claims] 1. A mixing valve for adjusting the mixing ratio of hot water and water, a driving means for energizing the mixing valve, an energizing amount setting means for setting the energizing amount of the driving means, and a energizing amount setting means for controlling the amount of hot water supplied to the mixing valve. a pipe connecting the heat source means to the mixing valve; 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 operates 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 at the same time, the temperature of hot water discharged from the mixing valve is supplied. A hot water mixing control device comprising a reporting means for notifying that a set temperature is not reached due to a drop in hot water temperature.