JPS6319013A - Hot water mixing controller - Google Patents

Abstract

PURPOSE:To eliminate a feeling of incongruity, and to heighten safety, by outputting the signal of a temperature comparison means to a driving means preferably than that of a flow rate comparison means, when temperature deviation exceeds a set value. CONSTITUTION:A hot water mixing controller is constituted of a deviation detecting means 15 which finds the temperature deviation from a temperature detecting means 10 for tepid water and a temperature setting means 13 for tepid water, a flow rate deviation detecting means 16 which finds flow rate deviation from a flow rate detecting means 12, and a flow rate setting means 14, a first and a second comparison means 18 and 21, an energizing quantity setting means 19, and a first and a second driving means 6 and 8. At this time, when the temperature deviation exceeds the value of a first deviation setting means 17 in the process of a flow rate adjustment, an output signal from the first comparison means 18 is inputted to the energizing quantity setting means 19 preferably, thereby, a temperature to generate hot water is always adjusted so as to be drawn back to a set temperature. As a result, a user can always use the tepid water set at a safe and comfortable temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hot water mixing control device for mixing high temperature hot water and cold water to produce suitable temperature hot water for use in showers, washrooms, etc.

Conventional Technology In the past, there were mechanical automatic temperature control mixing faucets that used wax thermostats, but there was no electronically controlled hot water mixing control device.

Problems to be Solved by the Invention As shown in Figure 5, the mechanical automatic temperature control mixer faucet using a sock thermostat may cause a large overshoot in the hot water temperature when the set flow rate is changed. Undershoot was occurring. Furthermore, when the set flow rate is changed, the water temperature becomes a constant deviation from the set temperature. In particular, when using a shower and changing the set flow rate, I suddenly found myself bathing in overshooting hot water, or conversely, in cold water, which was extremely dangerous and uncomfortable.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a hot water mixing control device that is easy to use and does not cause the danger of suddenly being bathed in hot water, nor the discomfort of being bathed in cold water. shall be.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a water side valve and a hot water side valve that adjust the amount of water and hot water, and first and second valves that drive the water side valve and the hot water side valve. a driving means, a hot water temperature detecting means for detecting the hot water temperature in the mixing part where the pipes to which the water side valve and the hot water side valve are attached join to form a mixing part, and a hot water temperature setting means for setting the hot water temperature; Flow rate detection means and flow rate setting means for detecting and setting the mixed flow rate; deviation detection means and flow rate deviation detection means for determining temperature deviation and flow rate deviation; and output signals of the deviation detection means and flow rate deviation detection means. 1st and 2nd compared with
a first comparing means for comparing the deviation detecting means and the first deviation setting means; and a second comparing means for comparing the flow rate deviation detecting means and the second deviation setting means. energizing amounts of the first and second driving means are determined from the output signals of the first and second comparing means, and when the set flow rate is changed, the output signal of the first comparing means is determined from the output signal of the first comparing means. The biasing amount setting means outputs the signal with priority over the output signal of the comparison means.

Consider a case where hot water is being supplied at a set temperature and flow rate, and the user changes the set flow rate. Since the flow rate deviation is larger than the first deviation of the second deviation setting means, the energizing amount setting means determines the energizing amount based on the output signal from the second comparing means and outputs it to the first and second driving means. Ru. The flow rate is adjusted in this manner, but if the hot water temperature fluctuates during the process and exceeds one shift of the first deviation setting means, the output signal from the first comparison means is activated.

It is entered in the retirement stage. In this case, the output signals from the first and second comparison means are both input to the energizing amount setting means, but the output signal from the first comparison means is given priority and the outlet temperature is always returned to the set temperature. Adjust. Therefore, users can always use hot water at a safe and comfortable temperature.

Example An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a hot water mixing control device according to an embodiment of the present invention.

First, the present invention will be explained in detail.

In FIG. 1, 1 is a water side pipe, and 2 is a hot water side pipe that supplies high temperature water from a heat source. Reference numeral 3 denotes a water side valve, which is located in the middle of the water side piping 1, and 4, a hot water side valve, which is installed in the middle of the hot water side piping 2. The water side piping 1 and the hot water side piping 2 merge further downstream to form a mixing section and form a single piping, and the hot water is discharged from a mixing outlet 5 (Callan, etc.). 6 is a first driving means (for example, a stepping motor, etc.), which drives the water side valve 3 through a rotational linear motion converter 7.
to adjust the amount of water. 8 is a second driving means (for example, a stepping motor or the like), which drives the hot water side valve 4 via the rotary 6-benzo linear motion converter 9 to adjust the amount of hot water. Numeral 10 is a hot water temperature detection means that detects the hot water temperature in the mixing section and inputs it to the control device 11 . 12 is a flow rate detection means that detects the mixed flow rate flowing into and out of the mixing section and inputs it to the control device. 13.
14 is a hot water temperature setting means and a flow rate setting means of the mixing section.

FIG. 2 shows one embodiment of the control device 11. Reference numeral 15 denotes a deviation detecting means for determining a temperature deviation from the hot water temperature detecting means 10 and the hot water temperature setting means 13. Reference numeral 16 denotes a flow rate deviation detection means for determining a flow rate deviation from the flow rate detection means 12 and the flow rate setting means 14. 1
7 is a first deviation setting means that sets a chain to be compared with the temperature deviation obtained by the deviation detection means 15, and sets a temperature deviation that allows the water temperature to be determined to be near the set temperature. Reference numeral 18 denotes a first comparing means which compares the deviation detecting means 15 and the first deviation setting means 17 and sends an output signal to the energizing amount calculating unit 19 if the temperature deviation is greater than the set deviation value. 20 is a second deviation setting means that sets a value to be compared with the flow deviation obtained by the flow deviation detection means 16, and the flow deviation 1 allows the flow rate to be determined to be near the set flow rate.
Set direct.

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Reference numeral 21 denotes a second comparison means that compares the flow rate deviation detection means 16 and the second deviation setting means 20 and sends an output signal to the energizing amount calculation means 19 if the flow rate deviation is set. The biasing amount calculating means 19 calculates and outputs the biasing amounts of the first and second driving means 6.8 based on the output signals of the first and second comparing means 18.21.

Next, the operation of the configuration of the present invention will be explained. In FIG. 2, the hot water temperature T0 of the mixing section is determined by the hot water temperature detecting means 10, and the hot water temperature setting means 13
The set temperature Ts is obtained and inputted to the deviation detection means 15 to obtain the temperature deviation En (En=T5-To). Next, the flow rate QO of the mixing section is determined by the flow rate detection means 12, and the set flow rate Fs is determined by the flow rate setting means 14, and the flow rate deviation detection means 1
6 to find the flow rate deviation E1. In the flowchart of FIG. 3, they are Pl, P2, P3, P4, P5, and P6.

Next, the obtained temperature deviation En and the setting [EnA of the first deviation setting means 17 are input to the first comparison means 17 and compared.

If the temperature deviation En is less than the set point EnJ, the flow rate deviation E1 and the second setting 1ifIE1ref are inputted to the second comparing means 21 and compared without outputting a drive signal to the energizing amount setting means 19. Flow rate deviation E1 is set flikElre
If it is less than f, the second comparing means 21 does not output a drive signal to the energizing amount setting means 19. In this case, the energizing amount setting means 19 does not output any energizing amount to the first and second driving means 6.8, so they are stopped.

Assume that in this state, the user operates the flow rate setting means 14 to change the flow rate setting f+fFs. At P8 of the flowchart in FIG. 3, the flow rate deviation E1 is compared with the setting 1-direction Elref of the second deviation setting means 20, and if it is larger than the set value Elref, the second comparison means 21 sends a drive signal to the energizing amount setting means 19. is output, so the biasing amount setting means 19 biases the first and second drive means 6.8 in the direction of increasing or decreasing the flow rate (ie, in the same direction). It is Plo of the flowchart of FIG. 3.

While driving the first and second driving means 6.8 to adjust the flow rate to the set flow rate, the temperature of the hot water fluctuates and a temperature deviation E occurs.
When becomes larger than the set 1st shift Eno of the first deviation setting means 17, the flow rate adjustment is immediately stopped and the temperature deviation En7 is controlled to be within the set 1st shift EnZ. That is, the output signal from the first comparing means 18 is outputted to the energy setting means 19, and the first and second driving means 6.8 are controlled in temperature with priority over the output signal of the second comparing means 21. Force in directions (opposite directions). pti in the flowchart in Figure 3
It is. If the temperature deviation En becomes less than the setting @EnΔ of the first setting means 16 again, no signal is outputted from the first comparing means 18, so that the flow rate adjustment is performed again.

In this way, when a user changes the hot water flow rate while using a shower, etc., if the hot water temperature fluctuates, the hot water temperature is immediately adjusted with priority over flow rate control, making the user feel that the water is always hot or cold. Now you can use it safely and comfortably.

Effects of the Invention As described above, according to the hot water mixing control device of the present invention, when the flow rate setting value is changed, the output signals of the flow rate deviation detection means and the second deviation setting means are compared by the second comparison means. When outputting a drive signal for energizing the first and second drive means 10 to the force setting means, the temperature of the hot water fluctuates and the temperature deviation changes to the setting of the first deviation setting means. If the signal becomes larger than the above, the signal from the first comparing means is given priority over the signal from the second comparing means and is output from the energizing amount setting means to the first and second driving means, so that the user can start the shower. It is extremely safe and easy to use because it always monitors the water temperature with priority over the flow rate, without causing the discomfort of being hot or cold during use, and without the risk of being exposed to boiling water due to large overshoots. It's getting an effect.

[Brief explanation of the drawing]

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 control system diagram of the device, Fig. 3 is a flowchart of the device, and Fig. 4 shows the results of the device. FIG. 5 is a diagram showing the results of a conventional mechanical mixing faucet. 3...Water side valve, 4...Hot water side valve, 6...
...First drive means, 8...Second drive means, 10...Hot water temperature detection means, 12...
Flow rate detection means, 13...Hot water temperature setting 11, -retirement stage, 14...Flow rate setting means, 15...
... Deviation detection means, 16 ... Flow rate deviation detection means, 17 ... First deviation setting means, 18 ...
...First comparison means, 19...Busting amount setting means, 20...Second deviation setting means, 21...
...Second means of comparison.

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, first and second driving means that drive the water side valve and the hot water side valve, and the water side valve and the hot water side valve are attached. The water side piping and the hot water side piping merge further downstream to form a mixing section, and include a hot water temperature detecting means for detecting the hot water temperature in the mixing section, a hot water temperature setting means for setting the hot water temperature in the mixing section, and a hot water temperature setting means for setting the hot water temperature in the mixing section; a deviation detecting means for determining a temperature deviation from the temperature detecting means and the hot water temperature setting means; a first deviation setting means to be compared with an output signal of the deviation detecting means; and the deviation detecting means and the first deviation setting. a flow rate setting means for setting the flow rate of the mixing section; a flow rate detection means for detecting the flow rate of the mixing section; and a flow rate deviation from the flow rate setting means and the flow rate detection means. a flow rate deviation detection means to be determined; a second deviation setting means to be compared with an output signal of the flow rate deviation detection means;
a second comparing means for comparing the deviation setting means of the flow rate deviation with the flow rate deviation detecting means; and an output section of the first comparing means and the second comparing means inputs the output part of the first and second driving means. A hot water mixing control device comprising an energizing amount setting means that calculates an energizing amount and outputs an output signal of the first comparing means with priority over an output signal of the second comparing means when changing the flow rate.