JPS61160117A - Hot water/cold water mixing control device - Google Patents

Abstract

PURPOSE:To prevent a user from being suddenly dashed with boiling water or the danger of use of boiling water by operating the heat energy of mixed hot water flowing out on the basis of the output signals of a mixed hot water temperature detecting means and a flow rate detecting means, and when the temperature of supplying hot water in a pipe is low, outputting a stop signal to a mixing valve. CONSTITUTION:When the outflow of mixed hot water is stopped for a long period, the temperature of supplying hot water in the pipe 8 is dropped and becomes equal to a water temperature. After the start of hot water flowing, the temperature of the mixed hot water is low and its heat energy is low. During the low level of the heat energy, a driving means 6 of the mixing valve 3 is stopped. Since the setting place of a heat source means 7 is different in each time, the length of the piping 8 is changed. Thereby, the quantity of hot water of which temperature is close to the water temperature in the pipe 8 is different in each hole. Therefore, the heat energy capacity of the mixed hot water is operated on the basis of a hot water temperature signal obtained from a mixed hot water temperature detecting means 9 and a flow rate signal obtained from a flow rate detecting means 12 and the total energy required until highly hot water is supplied to the mixing valve 3 is found out. On the basis of the studying function, a time required for outputting the stop signal to the mixing valve 3 is optionally controlled. When the highly hot water starts to be supplied to the mixing valve 3, hot water temperature control is started.

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 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 3d%, a hot water side valve 3b, and a spring 3c that biases the hot water and water side valves 3a and 3b inward.

3d, and a shaft 3 to which a water side valve 3a and a hot water side valve 3b are fixed. A core a4 is attached to the tip of the shaft 3 and contacts the cam 5. Reference numeral 6 denotes a driving means (for example, a motor, etc.) which fixes the cam 6 to the driving shaft. 7 is a heat source means that supplies hot water to the mixing valve 3 through a pipe 81. 9 is a mixed water temperature detection means;
The mixed water temperature is detected, and 10 is a mixed water temperature setting means. 1
Reference numeral 1 denotes a control device that compares output signals from the mixed hot water temperature detection 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 transmitted to the control device 1.
1 and energizes the driving means 6. When the driving means 6 is energized, the valve position of the mixing valve 3 changes via the cam 5, and the mixing ratio of hot water and water changes.

In this way, the mixing valve 3 is adjusted via the control device 11 so that the hot water temperature reaches 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 no hot water being supplied. 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 by mixing the low temperature hot water in the piping 8 and the water at the mixing valve 3 until the hot water comes out from the heat source means 7. . Therefore, if the user sets a high hot water temperature other than the water temperature, the mixing valve 3 opens the hot water side. However, when the cold and hot water in the pipes is drained, high-temperature water suddenly enters the mixing valve 3, so even if you try to close the hot water side with the mixing valve 3 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, which is extremely dangerous. Also, showers (using mixed hot water may pose life-threatening injuries 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 hot water.

Means for Solving the Problems In order to solve the above problems, the present invention provides a mixing valve, a driving means for energizing the mixing valve, a mixing water temperature detecting means, a mixing water temperature setting means, and a mixing valve. (7) edge difference detection means for determining a temperature deviation from the temperature detection means and the mixed hot water temperature setting means; energization amount setting means for setting the energization amount of the drive means; A pipe that supplies hot water to the valve, and calculates the thermal energy of the mixed hot water discharged from the output signals of the mixed hot water temperature detection means and the flow rate detection means, and when the temperature of the supplied hot water in the pipe is low, the mixing valve and arithmetic means for outputting a stop signal.

Operation The present invention has the above-mentioned configuration, and has a learning function that converts the amount of hot water accumulated in different piping lengths of the mixing valve salt from the heat source means to each household as thermal energy. This learning function stops the driving means of the mixing valve while detecting low-temperature hot water in the pipe. Is there a danger that when high-temperature water starts being supplied, the stop control of the mixing valve is released and the water temperature is adjusted, causing users to suddenly use hot water? It 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, 12 is a flow rate detection means that outputs the amount of mixed hot water to the control device. In FIG. 2, reference numeral 13 denotes a deviation detection means for determining the temperature difference between the mixed water temperature and the set value. Reference numeral 14 denotes a biasing amount setting means for setting the biasing amount of the driving means 6 based on the magnitude of the temperature deviation. The 15 calculation means calculates the thermal energy of the mixed hot water from the output signals of the mixed hot water temperature detection means 9 and the flow rate detection means 12, and when the hot water temperature in the pipe θ is low, the energizing amount setting means 14 is set to the driving means 6. Outputs a stop signal.

Next, the operation of the configuration of the above embodiment will be explained. The temperature of the hot water supplied in the pipe θ, where the supply of mixed hot water is stopped for a long time, decreases and becomes equal to the water temperature. After hot water starts to be dispensed, the mixed water temperature is low and the thermal energy is small. The driving means 6 of the dark mixing valve 3, which requires small heat energy, is stopped. However, each household has different heat source means7.
Since the installation locations are different, the lengths of the piping 8 are different. Therefore, the amount of hot water, which is close to the water temperature in the pipe θ, differs from household to household. Therefore, the amount of thermal energy possessed by the mixed hot water is calculated from the hot water temperature signal from the mixed hot water temperature detection means 9 and the flow rate signal from the flow rate detection means 12, and the total energy required until the high temperature hot water is supplied to the mixing valve 3 is determined. With this learning function, the time for outputting the stop signal to the mixing valve 3 can be freely controlled. Hot water temperature adjustment control is performed for the first time when high-temperature water begins to be supplied to the mixing valve 3.

In this way, the learning FIA function of the calculating means 15 is used to check the temperature of the hot water supplied in the pipe 8 to prevent the user from suddenly bathing in or using hot water.

Effects of the Invention As described above, according to the hot water mixing control bag device of the present invention, the thermal energy of the mixed hot water is calculated by the calculation means until high temperature water can be supplied to the mixing valve when the mixed hot water is dispensed. . This learning function stops the water temperature adjustment by the mixing valve until the low-temperature water in the piping is exhausted, eliminating the danger of the user suddenly bathing in hot water or using it again, making it extremely easy to use and safe. We are getting a lot of effects.

[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 an overall system diagram of a conventional hot water mixing control device. a...Mixing valve, 6...Driving means, 9...
・Mixed hot water temperature detection means, 10...Mixed hot water temperature setting means, 12. ...flow rate detection means, 13...deviation detection means,
14... energization amount setting means, 15... calculation means. Name of agent: Patent attorney Toshio Nakao and 1 other person3 ・
Figure 3

Claims (1)

[Claims] a mixing valve that adjusts the mixing ratio of hot water and water; a driving device that energizes the mixing valve; a mixing water temperature detecting device that detects the mixed water temperature; and a mixing water temperature setting device that sets the mixed water temperature; deviation detection means for detecting a temperature deviation from the mixed water temperature detection means and the mixed water temperature setting means; and energization amount setting means for setting and outputting the energization amount of the drive means based on the output signal of the deviation detection means. a flow rate detection means for detecting the amount of mixed hot water discharged; a pipe connected to the mixing valve for supplying hot water; A hot water mixing control device comprising calculation means for calculating and outputting a stop signal to the mixing valve when the temperature of supplied water in the piping is low.