JPH01159538A - Hot/cold water mixing controller - Google Patents

Abstract

PURPOSE:To improve facility by a method wherein a device is formed with a mixing means, a flow rate regulating means, a flow rate set means, a flow rate detecting means, a flow rate deviation computing means, and an energizing amount set means. CONSTITUTION:Hot water produced by a mixing means 14 is fed through a faucet 11 or a shower 12. During the starting or the stop of the feed of hot water, a flow rate regulating means 10 is driven at a high speed to rapidly start or stop the feed of hot water. When a flow rate is regulated during the feed of hot water, a flow rate deviation is determined by means of a flow rate set means 16 and a flow rate detecting means 9. When the flow rate deviation is high, the flow rate regulating means 10 is driven by means of a high energizing amount, and with the decrease in the flow rate deviation, an energizing amount is decreased non-linearly. This constitution enables rapid regulation and setting of a flow rate to a set value.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hot water mixing control device for mixing high temperature hot water and water to create a suitable temperature station.

Conventional (6') Outline 9↓The conventional hot water mixing control device is, for example, disclosed in Japanese Patent Application Laid-open No. 61-1161.
As shown in Publication No. 85, the structure was as shown in FIG. 4. First, a conventional configuration will be explained using FIG. 4. In Figure 4, a water side valve 3 and a hot water side valve 4 are placed between the water side piping 1 and the hot water side piping 2.
is attached, and the valve opening degree is adjusted by a water side drive section 5 (for example, a motor, etc.) and a hot water side drive section 6. The water side pipe 1 and the hot water side pipe 2 merge to form a mixing pipe 7, and a temperature sensor 8 and a flow rate sensor 9 are provided along the way. A switching valve 10 is attached to the downstream side of the mixing pipe 7 to switch to the Karan 11 or Java 12. Temperature sensor 8 and flow rate sensor 9
is input to the control unit 13, and the water side valve 3 and hot water side valve 4 are adjusted so that the set temperature and flow rate are achieved.

Next, the operation of the conventional configuration will be explained. FIG. 5 is a flowchart showing the operation. First, selector valve 1 when starting hot water supply
0 opens to Kallang side 10 or Java side 11. When hot water starts to be tapped, the temperature sensor 8 and flow rate sensor 9 in the mixing pipe 7
Based on the hot water temperature and hot water output amount signals, the control unit 13 compares and determines the set temperature and the mixed hot water temperature, and the set flow rate and the hot water output amount, and adjusts the valve opening degrees of the water side valve 3 and the hot water side valve 4. Here, if the comparison judgment result of the amount of hot water dispensed with respect to the set flow rate is expressed as the amount of 1 output minus the set flow rate l divided by the tolerance, the controller 13 controls the hot water side valve at a speed proportional to the value of 1 set flow rate minus the amount of hot water dispensed. The opening degree of No. 4 is adjusted. As a result, the amount of hot water produced increases. Further, the flow rate sensor 9 detects the flow rate and feeds it back to the control unit 13, and the opening degree is adjusted so that the absolute value of 1 set flow rate - hot water output amount 1 falls within an allowable error.

Problems to be Solved by the Invention However, in such a hot water mixing control device, in order to quickly adjust the flow rate to the set flow rate, the speed must be increased in proportion to 1 set flow rate - hot water output amount 1. However, if this is done, the set flow rate will be exceeded and a hunting condition will likely occur. If you try to adjust the flow rate to near the set flow rate for correspondence, you will have to reduce the speed. In this case, it takes time to adjust the flow rate, and it appears to the user that the flow rate has not changed, making it inconvenient to use.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a water shortage mixing control device that can quickly adjust the flow rate to a set flow rate and has improved usability.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a hot water mixing control device of the present invention, which includes a mixing means for adjusting the mixing ratio of drought water, and a flow rate adjusting means for adjusting the flow rate of the mixed hot water. , a flow rate setting means for adjusting the flow rate of mixed hot water, a flow rate detection means for detecting the amount of hot water dispensed, a flow rate deviation calculation means for calculating a flow rate deviation from the flow rate setting means and the flow rate detection means, and a flow rate deviation calculation means for calculating the flow rate deviation based on the flow rate deviation. The biasing amount setting means non-linearly and continuously changes and outputs the biasing amount of the control valve as the biasing amount approaches the set flow rate.

Function In the above configuration, the hot water made by the mixing means is discharged from a kalan or java. When starting or stopping hot water supply, the flow rate regulating means is driven at high speed to quickly start or stop hot water supply. Next, when adjusting the flow rate during hot water supply, first the flow rate deviation is determined from the flow rate setting means and the flow rate detection means. When the flow rate deviation is large, the flow rate control valve is driven with a large biasing amount, and as the flow rate deviation gradually decreases, the biasing amount is decreased nonlinearly, thereby quickly adjusting the flow rate to the set flow rate and stabilizing it.

Embodiment An embodiment of the present invention will be described with reference to the drawings. Identical equivalents are given the same numbers in FIGS. 1 and 4.

In FIG. 1, 14 is a mixing means for adjusting the mixing ratio of hot water and water.

Here, the mixing means includes a case where the water side valve and the hot water side valve for adjusting the water amount and it are energized by one driving means (for example, a motor, etc.) or two driving means. Reference numeral 15 is an operating means that outputs a command to start or stop hot water supply and a flow rate adjustment command to increase or decrease the flow rate to the control unit 13.

FIG. 2 shows an embodiment of the control section. Reference numeral 16 denotes a flow rate setting means which inputs into the flow rate deviation calculation means 17 together with the flow rate detection means 9. The flow rate deviation calculated by the flow rate deviation calculating means 17 is outputted to the energizing amount setting means 18. The biasing amount setting means 18 sets the biasing amount of the mixing means 14 according to the magnitude of the flow rate deviation.

Next, the operation of the configuration of the present invention will be explained. The flowchart in FIG. 3 shows the operation. The operating means 15 outputs a hot water supply start instruction to the control unit 13 . The flow control valve 10 opens,
The mixing means 14 produces hot water at a temperature set by the operating means 15, and the hot water is supplied from the Karan 11, Java 12, etc. via the flow control valve 10. Next, the desired flow rate is set using the flow rate setting means 16. A flow rate detection means 9 provided in the middle of the mixing pipe 7 detects the amount of hot water and determines the flow rate deviation ε.

Next, the biasing amount setting means 18 sets the magnitude of the biasing amount of the flow rate regulating valve 10 according to the magnitude of the flow rate deviation E3, and depending on the sign of the flow rate deviation E3, for example, if the sign is positive, the direction of opening the flow rate regulating valve is set. If it is negative, the rotation direction is set to the closing direction. Hunting is prevented from occurring near the set flow rate where the magnitude of the biasing amount is nonlinearly reduced as the flow rate deviation becomes smaller. In addition, if the flow rate deviation is large, the energizing amount is increased, so the flow rate can be quickly reduced or adjusted to the set flow rate.

Effects of the Invention As described above, according to the hot water mixing control device of the present invention, the flow rate deviation is determined from the flow rate setting means and the flow rate detection means by the flow rate deviation calculating means, and from this value, the biasing amount setting means adjusts the flow rate regulating valve. Since the energization amount is set non-linearly and continuously, the user can arbitrarily set the flow rate of the mixed hot water according to his/her preference.
If the flow rate deviation value is large, the energizing amount is increased to quickly adjust the flow control valve to near the set flow rate, and as the set flow rate is approached, the energizing amount is decreased non-linearly, so the set flow rate is reached without hunting. The flow rate adjustment is slow, or conversely, the flow rate is not restricted too much, and the flow rate is not too tight, making the user feel uneasy, especially the discomfort that occurs when using Java, and the ease of use is greatly improved. effective.

[Brief explanation of the drawing]

FIG. 1 is a system diagram of a hot water mixing control device according to an embodiment of the present invention, and FIG. 2 is a control block diagram of the same device. FIG. 3 is a flowchart showing the operation of the device, FIG. 4 is a system diagram of a conventional hot water mixing control device, and FIG. 5 is a flowchart showing the operation of the device. 9...Flow rate detection means, 10...Flow rate adjustment means, 14...Mixing means, 16...Flow rate setting means, 17...Flow rate Deviation calculation means, 18
...Biasing amount setting means.

Claims (1)

[Claims] a mixing means for adjusting the mixing ratio of high temperature hot water and water; a flow rate adjusting means for adjusting the flow rate of the mixed hot water from the mixing means and starting or stopping hot water supply; and a flow rate setting means for setting the flow rate of the mixed hot water; a flow rate detection means for detecting the amount of hot water discharged from the mixing means; a flow rate deviation calculation means for calculating a flow rate deviation from the flow rate setting means and the flow rate detection means; A hot water mixing control device comprising an energizing amount setting means that continuously changes and drives the energizing amount of a flow rate control valve.