JPS6346319A - Hot water feed system - Google Patents

Abstract

PURPOSE:To eliminate a risk of high temperature hot water erroneously pouring and to enable a single mixing valve to be safely commonly used, by a method wherein the opening of a hot and cold water mixing valve is adjusted to the set temperature, at a hot water feed port having a high priority order, of hot water temperatures set by a hot water temperature set part. CONSTITUTION:A mixture ratio of hot water to cold water is changed according to the opening of a motor-operated mixing valve 1 controlled by a control device 4. A hot water temperature value set by a hot water temperature set part 8a of each of three hot water feed port devices 8A, 8B, and 8C is inputted to a priority selecting part 10. Since, when, for example, a hot water feed switch 8b in the first hot water feed port device 8A is depressed, output of set values by the hot water temperature parts 8a of other two hot water feed port devices 8B and 8C is prohibited, a hot water temperature set value at the first hot water feed port device 8A is inputted with the highest in most priority to a comparing part 11. Since a hot water temperature detected by a temperature sensor 6 is inputted to the comparing part 11, the sensor value is compared with a hot water temperature inputted from the priority selecting pat 10. According to the comparing result, the motor-operated mixing valve 1 is actuated to control its opening so that the set value is coincided with the sensor value.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a system that allows hot water to be simultaneously tapped from a single hot water mixing valve to a plurality of hot water taps.

(Prior Art) Conventionally, a hot water tap system shown in FIGS. 5 and 6 is known as a method of supplying mixed hot water to a plurality of hot water taps using a hot water mixing valve.

The hot water supply system shown in Fig. 5 uses one hot water mixing valve C, and the hot water mixing valve C is provided at the relay point between the hot water pipe a and the water pipe A, and the opening degree of the hot water mixing valve C is The temperature of the hot water is adjusted accordingly, and mixed hot water is supplied to the hot water supply pipe d. The hot water supply pipe d is branched into a plurality of hot water outlets, and each hot water outlet is provided with a faucet e for adjusting the amount of hot water.

(Problem to be Solved by the Invention) However, in this hot water system, when hot water is being used at a certain outlet, when the faucet e at another outlet is opened, hot water from that outlet is used. It is also dangerous because hot water comes out at the same high temperature. A hot water tapping system shown in FIG. 6 is used to prevent this danger.

The hot water system shown in Fig. 6 is equipped with a mixing valve f and a faucet g for each of a plurality of tap holes, and according to this, the mixed hot water can be adjusted individually for each tap. Fifth
Although the problem described in the figure can be solved, it is necessary to provide a mixing valve f for each outlet, which increases the cost.

(Means for Solving the Problems) According to the present invention, the opening degrees of a plurality of hot water outlet valves are adjusted from one hot water mixing valve.

Note that the priority is set depending on the specific usage environment, and for example, between a shower and a bathtub, the former is set to have a higher priority from a safety standpoint.

(Function) When the hot water temperature is set in the hot water temperature setting section provided for each outlet, the hot water temperature setting with the highest priority among the predetermined priorities among these hot water temperature setting values is selected. The temperature set in the section is selected, the opening degree of one hot water mixing valve is adjusted in accordance with this temperature, and hot water is dispensed at the hot water temperature of the set value with the highest priority at the plurality of outlets.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic diagram showing a control system of a hot water tapping system according to the present invention.

This example is a system using a solenoid valve 7 as a faucet for adjusting the amount of hot water.

The electric mixing valve 1 is provided at a relay point between a hot water pipe 2 and a water pipe 3, and the opening degree of the electric mixing valve 1 is controlled by a control device 4. That is, since the mixing ratio of hot water and water changes depending on the opening degree of the electric mixing valve 1, the temperature of hot water discharged into the hot water tap 5 changes according to the opening degree of the electric mixing valve 1. The temperature of the hot water flowing through the tap pipe 5 is detected by a temperature sensor 6 and input to the control device 4 . Further, the tap water pipe 5 is branched into a plurality of tap holes 5',
The electromagnetic valve 7 is provided at each outlet.

This electromagnetic valve 7 is used to adjust the amount of hot water to be tapped into each tap, and its opening degree is controlled by a tap tap device 8. Of course, an electric two-way valve may be used instead of the solenoid valve 7.

The tap device 8 is a device that includes a hot water temperature setting section 8a and a hot water tap switch 8b (see FIG. 2). The hot water temperature setting section 8a can set a desired hot water temperature using, for example, a volume or a multi-stage switch, and the hot water tap switch 8b is operated when hot water is to be tapped from the hot water tap 5' of the corresponding tap tap device 8. It's a switch.

FIG. 2 is a block diagram for explaining the functions of the control device 4. As shown in FIG. In addition, this example has three self-equipped hot springs waA, 8
The case where B and 8C are provided is shown.

In FIG. 2, three tap devices 8A, 8B.

The hot water temperature values set in each hot water temperature setting section 8a of 8C are input to the priority selection section 10, respectively. The priority selection section 10 consists of six gates, and this gate is a circuit that combines two functionally divided gates: a first gate 9a and a second gate 9b. The first gate 9a is a hot water temperature setting section 8a.
This is a gate that opens when the hot water tap switch 8b of the hot water tap device provided with the hot water tap is pressed. The second gate 9b is a gate that closes when the hot water tap switch 8b is pressed. The hot water temperature value set by the hot water temperature setting section 8a in the first tap tap device 8A can be input to the comparison section 11 via the first gate 9a. The hot water temperature value set by the hot water temperature setting unit 8a in the second tap device 8B is controlled by the second gate 9a and the hot water tap switch 8b of the first tap device 8A. Comparison unit 11 via 9b
can be entered. The hot water temperature value set in the hot water temperature setting section 8a in the third tap device 8c is determined by the first gate 9a.
and the first and second tapping devices 8A.

2 controlled by the operation of each hot water tap switch 8b of 8B.
The data can be input to the comparison section 11 via the second game (second game) 9b. When the hot water tap switch 8b in the first tap tap device 8A is pressed, output of the set value in the hot water temperature setting section 8a of the other two tap tap devices 8B and 8C is prohibited. The hot water temperature set value at the outlet device 8A is inputted to the comparison unit 11 with the highest priority. Further, when the hot water tap switch 8b in the second tap tap device 8B is operated on the condition that the hot water tap switch 8b in the first tap tap device 8A is not pressed, the tap tap switch 8b in the second tap tap device 8B is operated. Since the output of the set value in the hot water temperature setting section 8a is prohibited, the hot water temperature set value in the second tap device 8A is given priority over the hot water temperature set value in the third tap device 8C, is input. moreover,
The hot water temperature set value at the third tap device 8C can be input to the comparison unit 11 only when the hot water tap switches 8b of the first and second tap devices 8A, 8B are not pressed.

That is, the priority selection unit 10 of this example sets the first tap device 8A as the first priority, the second tap device 8B as the second priority, and the third tap device 8C as the third priority. Of course, the priority is not limited to this, but if a hot water tap device with a lower priority is connected to the output side of the corresponding hot water temperature setting section 8a, many second gates 9b can be connected. good.

Further, the number of tap devices is not limited to three as in this example, but may be four or more.

Since the hot water temperature (sensor value) detected by the temperature sensor (thermistor) 6 is input to the comparison section 11, this sensor value and the hot water temperature input from the priority selection section 10 are compared. Then, depending on the comparison result, the opening degree of the electric mixing valve 1 is controlled so that the set value and the sensor value match.

FIG. 3 illustrates a case in which the gate 11 constituting the priority selection section 10 is constituted by an analog switch 14, and the comparison section 11 is constituted by a comparator 13 with hysteresis.

The hot water temperature setting section 8a is configured to be able to be continuously adjusted by a volume VR. For example, the higher the voltage value set by the volume VR, the higher the hot water temperature value is set. The tap switch 8b is constituted by a press switch 12, and by turning on the press switch 12, it controls opening and closing of the analog switch 14 and also controls opening and closing of the electromagnetic valve 7.

FIG. 4 is a schematic diagram showing another embodiment. This embodiment shows a case where hot water is manually controlled without using the hot water tap switch 8b and the electromagnetic valve 7, and in this case, the gate 9
In order to control the flow rate, a flow rate switch 16 may be provided for each tap, and the flow rate value detected by the flow rate switch 16 may be input to the tap tap device 8.

(Effects of the Invention) As described above, according to the present invention, hot water is dispensed from all outlets according to the temperature with the highest priority among the hot water temperatures set in each outlet device. This eliminates the danger of being exposed to high-temperature water and allows one mixing valve to be shared safely.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an embodiment of a hot water tap system according to the present invention, FIG. 2 is a block diagram showing the configuration of a control device, FIG. 3 is a circuit diagram showing a case where the control device is configured with a microcomputer, and FIG. FIG. 4 is a schematic diagram showing another embodiment, and FIGS. 5 and 6 are schematic diagrams showing a conventional hot water tapping system. 1... Electric mixing valve 4... Control device 6...
Temperature sensor 7... Solenoid valve 8... Outlet device 9... Gate 10... Priority selection section Fig. 1

Claims (1)

[Claims] 1) In a system in which mixed hot water can be dispensed from a single hot water mixing valve to multiple outlets, a priority order is determined for each outlet, and each outlet is provided with a different hot water temperature setting section. A hot water tapping system characterized in that the opening degree of the hot water mixing valve is adjusted in accordance with the set temperature of a hot water tap having a high priority among the hot water temperatures set by a hot water temperature setting section.