JPS62282312A - Hot water/water mixing control device - Google Patents

Abstract

PURPOSE:To attain the hot water supply having a set temperature from the beginning of hot water supply by opening a water valve and a hot water valve by the energizing quantity determined by the output quantity of a temperature deviation detecting means or a flow deviation detecting means after the position at which the valves starts opening. CONSTITUTION:The water valve 12 and the hot water valve 13 are driven at an equal speed by drive means 15, 17 respectively at the start of hot water supply. Thus, the valves 12, 13 are driven by an overlap angle theta of the valves by closing position setting means 21, 22 and come to the position where no overlap of the valves exist. With the opening of the valves larger than the angle theta, water and hot water come from the valves 12, 13 and an output signal of a mixing hot water temperature detection means 18 is changed, then the opening of the valves 12, 13 is detected. Then the quantity of energizing the valves 12, 13 is determined by the output quantity of a temperature deviation detecting means 25 or a flow deviation detecting means 26 by means of a priority means 27.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention Field of Industrial Application The present invention relates to a hot water mixing control device that adjusts the mixing ratio of high temperature water and low temperature water to obtain an optimal mixed water temperature.

Conventional technology FIG. 4 is a block diagram of a conventional hot water mixing control device.

(For example, Japanese Utility Model Application No. 61-18424) 1 is a water supply pipe, 2 is a high temperature hot water supply pipe, and 3 is a mixed water outlet. 4 is a water side valve, and 5 is a hot water side valve. A thermistor 6 detects the mixed water temperature and notifies the control device 7 of the water temperature signal. A controller 8 is connected to the control device 7 and is used to set the temperature of hot water, and the set temperature is input to the control device 7. The control device 7 operates the water side valve 4 and the hot water side valve 5 based on the temperature difference between the mixed water temperature signal detected by the thermistor 6 and the set temperature signal set by the controller 8 to control the temperature of the mixed water. Adjust.

However, in order to obtain an appropriate mixed water temperature from the initial stage of hot water dispensing in the hot water mixing control device, the water side valve 4 and the hot water side valve 5 must be opened at the same time, and if one valve opens first, the set temperature will not be reached. There was a drawback that the hot water came out far from the water.

Problems to be Solved by the Invention In the above configuration, if the water side valve opens early at the start of hot water dispensing, the cold water will flow out from the mixing hot water outlet first, causing discomfort during use. On the other hand, if the hot water side valve opens too early, hot water will come out from the mixed hot water outlet, which is extremely dangerous.

The present invention has been made in consideration of this drawback, and an object of the present invention is to provide a safe hot water mixing control device.

Means for Solving the Problems In order to solve the above problems, the hot water mixing control device of the present invention includes a water side valve, a hot water side valve, and a first and hot water side valve that energizes the water side valve and the hot water side valve. a second driving means, a mixed hot water temperature detecting means for detecting the mixed hot water temperature, and a priority means for outputting the output signal of the mixed hot water temperature detecting means to the energization amount setting means with priority when the hot water is hot during tapping. Become.

Function: At the start of hot water dispensing, both the water side valve and the hot water side valve rotate by an angle θ. Then, from this position, the water side valve and the hot water side valve are opened with the bias amount determined by the output amount of the temperature deviation detection means or the flow rate deviation detection means to discharge hot water.

In this case, since the two valves start opening at the same time, it is safe because cold water or hot water does not come out immediately after the hot water is dispensed.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings. 1st
The figure is a sectional view of the hot water mixing control device of the present invention. 9 is a water supply pipe, 10 is a high temperature hot water supply pipe, and 11 is a mixed hot water outlet. 12 is a water side valve, and 13 is a hot water side valve. The water side valve 12 is fixed to a valve shaft 14 and is energized by a first driving means 15 (for example, a motor, etc.). Similarly, the hot water side valve 13 is also fixed to the valve shaft 16 and is biased by the second driving means 17. Reference numeral 18 denotes a mixed water temperature detection means for detecting the mixed water temperature. 1
9 is a flow rate detection means that detects output i&Jtl. 20 is a control device that includes a first drive means 15 and a second drive means 1.
7 is energized. 21 and 22 are closed position setting means (eg, microswitches, etc.).

FIG. 2 shows the structure of the water side valve 12 and the hot water side valve 13.

This is an example of the Fi′ control device 30. 23 is a hot water temperature setting means. 24 is a flow rate setting means. 25 is a temperature deviation detecting means for detecting a temperature deviation from the mixed hot water temperature detecting means 18 and the hot water temperature setting means 23; 26 is a flow rate deviation detecting means for detecting a flow deviation from the flow rate setting means 24 and the flow rate detecting means 19; It is. Reference numeral 28 denotes an urging amount setting means for setting the amount of urging of the first driving means 15 and the second driving means 17. Reference numeral 27 denotes priority means for outputting the output signal of the mixed hot water temperature detection means 18 to the energizing amount setting means with priority over the output signals of the temperature deviation detection means 25 and the flow rate deviation detection means 26 at the start of hot water dispensing. be.

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

At the start of hot water dispensing, the water measuring valve 12 and the hot water side valve 13 are driven at a constant speed by the first driving means 15 and the second driving means 17, respectively. Therefore, the water side valve 125 and the hot water side valve 13 are rotated by the valve overlap angle θ (FIG. 2) from the closed position setting means 21 and 22, and are brought to a position where the valve overlap is eliminated. When the rotation angle of the valve becomes larger than θ, water and hot water flow out from the water side valve 12 and the hot water side valve 13. At this time, the output signal of the mixed hot water temperature detection means changes due to the flowing water and hot water, so that it is detected that the water side valve 12 and the hot water side valve 13 are open.

After that, the priority means 2 completes the water side valve 12 and the hot water side valve 1.
The energization amount of No. 3 is determined by the output amount of the temperature deviation detection means 25 or the flow rate deviation detection means 26.

Therefore, after the valves are opened (4), the water side valve 12 and the hot water side valve 13 are
Open it and start brewing hot water.

Therefore, it is safe because cold water or hot water does not come out immediately after hot water is tapped.

Effects of the Invention As described above, according to the hot water mixing control device of the present invention, after aligning the opening positions of the valves, the water side valve is activated by the biasing amount determined by the output amount of the temperature deviation detection means or the flow rate deviation detection means. And since the hot water side valve is opened, it is possible to supply hot water at the preset temperature from the beginning of hot water supply, making it safer and dramatically more convenient to use, especially when using a shower, without cold or hot water coming out.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a hot water mixing control device according to an embodiment of the present invention, Fig. 2 is a plan view of a valve of the same device, Fig. 3 is a control block diagram of the same device, and Fig. 4 is a conventional hot water mixing control device. FIG. 2 is a block diagram of a control device. 12...Water side valve, 13...Hot water side valve, 1
8... Mixed hot water temperature detection means, 19... Flow rate detection means, 20... Control device. Name of agent: Patent attorney Toshio Nakao and 1 other person/2
- Water/side bowl/3--one bowl side bowl 20--one analysis

Claims (1)

[Claims] a water side valve that adjusts the amount of water; a hot water side valve that adjusts the amount of hot water; a first driving means that energizes the water side valve; a second driving means that energizes the hot water side valve; mixed water temperature detection means for detecting the temperature; close position setting means for setting the closed positions of the water side valve and the hot water side valve; and the biasing amount of the first drive means and the second drive means. A hot water mixing control device comprising an energizing amount setting means for setting, and a priority means for preferentially outputting an output signal of the mixed hot water temperature detecting means to the energizing amount setting means at the start of hot water dispensing.