JPH05597B2 - - 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 2 and 3.
As shown in the figure. Figure 2 shows the overall system diagram. 1 is a water inlet, 2 is a hot water inlet, and 3 is a mixing outlet. 4 is a mixing valve that changes the hot water mixing ratio and adjusts the mixed water temperature. Reference numeral 5 denotes a first linear rotational motion converter, which converts the driving force of the first driving means 6 (for example, a motor, etc.) into linear motion. Reference numeral 7 is a mixed hot water temperature detection means that detects the temperature of the hot water. Reference numeral 8 denotes a flow rate control valve that controls and shuts off the amount of hot water. Reference numeral 9 denotes a second linear rotational motion converter, which converts the rotational driving force of the second drive means 10 into linear motion. Reference numeral 11 denotes a control section, which includes mixed hot water temperature setting means 12 and operating means 13 for instructing to start or stop hot water pouring. The control unit 11
As shown in the figure.

In FIG. 2, 13-A is a stop operation means that outputs an instruction signal to stop hot water supply. 14 is a deviation detection means;
Detect temperature deviation. Reference numeral 15 denotes a first biasing amount setting means for setting the biasing amount of the first drive means 6 that biases the mixing valve 4. 16 is a second biasing amount setting means;
The amount of energization of the second driving means 10 that energizes the flow control valve 8 is set.

Next, the operation will be explained. In order to open the flow rate control valve 8 and dispense hot water at the temperature set by the mixed hot water temperature setting means 12,
A temperature deviation from the hot water temperature detected by the mixed hot water temperature detection means 7 is detected. The amount of energization of the first drive means 6 is set and output according to the magnitude of the temperature deviation. The first driving means 6 drives the mixing valve 4 via the linear rotary motion converter 5 to change the mixing ratio of hot water and adjust the temperature of the hot water. The user operates the stop operation means 13-A (for example, a switch, etc.)
When operated, the second energizing amount setting means 16 outputs a signal to close the flow control valve 8, and the hot water supply is stopped.

Problems to be Solved by the Invention However, the above configuration has the following problems.
Let us consider a case where a user sets the mixed water temperature setting means 12 to a high temperature of, for example, 80° C. in order to pour hot water into a bath or the like. In this state, if the user operates the stop operation means 13-A without lowering the set temperature to a safe temperature of low temperature, for example, about 42°C, high-temperature water of 80°C remains in the pipe. Next, the user sets the temperature 42
When the water is lowered to around 80°C and the hot water is turned on again, if the hot water supply stop time is short, there is still high temperature water around 80°C remaining in the pipes.
When you use mixed hot water for showering, etc., your body will be bathed in boiling water,
It may cause burns, blindness, or be life-threatening.

The present invention has been made in view of the above, and an object of the present invention is to provide a highly 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-mentioned problems, the present invention provides a mixing valve, a first driving means for energizing the mixing valve, and setting the amount of energization of the first driving means. a first energization amount setting means, a first hot water temperature setting means for setting the mixed water temperature, a second hot water temperature setting means to be compared with the output signal of the first hot water temperature setting means; a comparison means for comparing the output signals of the first and second hot water temperature setting means; a mixed hot water temperature detection means for detecting the mixed hot water temperature; a deviation detection means for determining a deviation; a control valve; a second drive means for driving the control valve; a second energization amount setting means for setting an energization amount of the second drive means; Alternatively, it may include a stop operation means that outputs a stop operation instruction signal, and a timer means that is activated when the output signal is output from the stop operation means.

Function When the user operates the stop operation means to stop hot water dispensing, the mixing valve adjusts the hot water to the set value of the second hot water temperature setting means, regardless of the temperature value set by the first hot water temperature setting means. Adjust temperature. The timer means is activated and the control valve remains open until the mixed water temperature reaches the second set water temperature value. Therefore, if hot water is present in the piping, the timer means delays closing of the control valve until the hot water is completely discharged and the water temperature reaches a safe temperature. This allows users to use hot water at a safe temperature when refilling.

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

Components in FIG. 1 that are equivalent to those in FIGS. 2 and 3 are given the same numbers. In FIG. 1, 17 is a second hot water temperature setting means, which sets the temperature within a range that does not pose a danger to the human body. 18 is a comparison means that compares the first hot water temperature setting means 12 and the second hot water temperature setting means 17, and when the stop operation means 13-A is operated, the deviation detection means 14 is determined to be safe so as not to pose a danger to the human body. Outputs the water temperature value. 19 is a timer means and stop operation means 13-A
The second driving means 10 is activated by the output signal of and stops the second driving means 10 for a certain period of time.

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

The user sets the mixed water temperature using the first hot water temperature setting means 12. The mixing valve 4 is energized by the first driving means 6 so that there is no temperature deviation from the current mixed water temperature. For example, when hot water of about 80° C. is being dispensed and the stop operation means 13-A is operated to stop dispensing hot water, the timer means 19 and the comparison means 18 are activated. When the timer means 19 is activated, the closing of the control valve 8 is delayed for a certain period of time. Further, the comparison means 18 compares the first hot water temperature setting means 12 and the second hot water temperature setting means 17 and outputs a safe hot water temperature value to the deviation detection means 14. Therefore, the first driving means 6 of the mixing valve 4 is operated depending on the deviation between the safe water temperature value and the current mixed water temperature. Therefore, until the hot water temperature reaches a safe temperature,
The control valve 8 is opened by a timer means 19, and when the safe temperature is reached and the timer time of the timer means 19 has elapsed, the second driving means 10 is energized and the control valve 8 is closed.

The next time the user turns on the hot water again, the hot water can be used at a safe temperature, and the user can safely use it without putting the human body in a dangerous situation.

Effects of the Invention As described above, according to the hot water mixing control device of the present invention, even if the user operates to stop the hot water supply with the mixed hot water temperature set to a high temperature state, the tin temperature is adjusted to a safe hot water temperature. By delaying the closing of the valve by a certain period of time using a timer means, it is extremely easy to use and achieves a high degree of safety.

[Brief explanation of drawings]

FIG. 1 is a control block diagram of a hot water mixing control device according to an embodiment of the present invention, FIG. 2 is an overall system diagram of a conventional hot water mixing control device, and FIG. 3 is a control block diagram of the conventional hot water mixing control device. 4... Mixing valve, 6... First driving means, 7...
Mixed hot water temperature detection means, 8... control valve, 10... second
driving means, 12...first hot water temperature setting means, 13
-A... Stop operation means, 14... Deviation detection means,
15...first energizing amount setting means, 16...second energizing amount setting means, 17...second hot water temperature setting means,
18... Comparison means, 19... Timer means.

Claims (1)

[Claims] 1. A mixing valve for adjusting the mixing ratio of hot water and water, a first driving means for energizing the mixing valve, a mixing water temperature detecting means for detecting the mixed water temperature, and a first mixing valve for setting the mixed water temperature. a hot water temperature setting means; a deviation detecting means for determining a temperature deviation from the mixed hot water temperature detecting means and the mixed hot water temperature setting means; and setting an energizing amount of the first driving means based on an output signal of the deviation detecting means. a first energizing amount setting means for setting a hot water temperature, a second hot water temperature setting means for setting a hot water temperature to be compared with an output value of the first hot water temperature setting means, and the first and second hot water temperature setting means. Comparing means for comparing the output signals of the second hot water temperature setting means and outputting the output signal of the second hot water temperature setting means to the variation detecting means when they do not match;
a control valve that adjusts the amount of mixed hot water dispensed; a second drive means that energizes the control valve; and a second energization amount setting device that sets the amount of energization of the second drive means;
a stop operation means for outputting a signal to stop hot water output from the control valve; and a stop operation means activated by the output signal of the stop operation means to close the control valve until the hot water temperature reaches a set value of the second hot water temperature setting means. A hot water mixing control device comprising a timer means for delaying the time.