JPS61190615A - Mixing device of hot water and cold water - Google Patents

Abstract

PURPOSE:To obtain optionally hot water up to boiling water independently of the set temperature of a hot water feeder by providing a flow rate control valve on a hot water flow passage above a mixing valve and providing an auxiliary heater between the mixing valve and a temperature detector and controlling them overall. CONSTITUTION:A mixing valve 3 which controls a mixture ratio of hot water to cold water is interposed between a hot water flow passage 1 and a cold water flow passage 2, and this valve 3 is controlled by a driving device 4, and the driving device 4 is controlled by a controller 9 so that the set temperature of a mixed water temperature setter 10a is equal to the temperature detected by a temperature detector 5. In this case, a flow rate control valve 6 is provided on the hot water flow passage above the mixing valve, and an auxiliary heater 8 is provided between the mixing valve 3 and the temperature detector 5, and a boiling water temperature setter 10b is added. When boiling water is required temporarily, a set signal is sent to the controller 9 to close the cold water flow passage 2 of the mixing valve 3. Further, water is heated again by the auxiliary heater 8, and the aperture area of the flow rate control valve 6 is controlled through a driving device 7 so that the detected temperature of the temperature detector 5 is equal to the set temperature of the boiling water temperature setter 10b.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hot water mixing device for mixing hot water and water to supply hot water to a place at an appropriate temperature.

2. Description of the Related Art A conventional hot water mixing device has a configuration in which the mixing ratio of hot water and water is adjusted by a mixing valve in accordance with the temperature set by a setting device.

An example of the above-mentioned conventional hot water mixing device will be described below with reference to the drawings.

FIG. 4 shows a conventional hot water mixing device, in which a mixing valve 3 is connected via an electric drive device 4 so that the temperature detected by a temperature detector 5 is equal to the temperature arbitrarily set in a setting device 10'. By operating the system, the mixing ratio of hot water and water was adjusted, and mixed water at a set temperature was supplied.

Problems to be Solved by the Invention However, the above configuration only mixes the hot water flowing through the hot water side flow path with the water flowing through the water side flow path; This method has the problem of not being able to handle cases where hot water is required, such as hot water at a temperature higher than that of hot water or boiling water.

The present invention solves the above-mentioned problems by normally supplying mixed water at a temperature set in a setting device, and if hot water, including boiling water, is temporarily required, a separate setting can be made to supply water up to boiling water. To provide a hot water mixing device capable of supplying hot water at any temperature.

Means for solving the problems and described above In order to solve the problems, the hot water mixing device of the present invention has the following features:
A flow control valve that limits the flow rate of the vortex via an electric drive device in the upstream flow path on the hot water side of the mixing valve, an auxiliary heater for reheating between the mixing valve and the temperature sensor, and This configuration includes a controller that controls the operation of the controller.

By having the above-mentioned structure, the present invention normally supplies mixed water at the temperature set in the setting device, and when hot water is temporarily required, by setting it with the hot water temperature setting device, The water side of the mixing valve is closed and only the field flows in.
Since this hot water is reheated by an auxiliary heater, it is possible to discharge hot water at a higher temperature than the hot water supply section.

Moreover, by using a temperature sensor installed downstream of the mixing valve and a controller that receives this detection signal to control the flow rate control valve, it is possible to supply hot water over a wide range up to boiling water. It is.

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

In Fig. 1, 1 is a flow path on the hot water side, 2 is a flow path on the water side, 3 is a mixing valve that adjusts the mixing ratio of tin and water, and 4 is an electric drive device that drives this mixing valve 3. is temperature sensor 5
The temperature of the mixed water detected by the mixed water temperature setting device I
The controller 9 drives the mixing valve 3 via the electric drive device 4 and adjusts the mixing ratio of hot water and water so that the temperature set by Qa becomes equal to the water mixture at the set temperature. supply This embodiment is used in combination with the hot water mixing device having the above configuration, and when hot water is temporarily required, the temperature of the hot water is set by the hot water temperature setting device 10b, and the temperature is set as shown in FIG. According to this control sequence, a setting signal is sent to the controller 9, and the controller 9 closes the water side flow path 1 of the mixing valve 3 via the electric drive device 4, and at the same time reheats it with the auxiliary heater 8. The controller 9 makes the temperature detected by the temperature detector 5 equal to the temperature set by the hot water temperature setting device 10b.
The flow rate of hot water is controlled by adjusting the opening area of the flow rate control valve 6 via the electric drive device 7.

With the above configuration, you can not only obtain mixed water at the temperature you normally require, but also obtain boiling water at the temperature you need whenever you need hot water with just a simple setting. . FIG. 3 is a diagram showing a comparison between the upper temperature limit of the conventional hot water mixing device and the temperature upper limit of the hot water mixing device of the present invention. This indicates that hot water up to boiling water can always be supplied regardless of the temperature of the water flowing through the channel (the set temperature of the water heater).

Effects of the Invention As described above, the present invention provides a flow control valve that controls the flow rate of hot water via an electric drive device in the hot water side upstream flow path of the mixing valve, and an auxiliary valve between the mixing valve and the temperature sensor. The following effects can be obtained by providing a heater and a control device that collectively controls these devices.

(1) Whenever hot water is needed, it is possible to easily obtain hot water at any temperature up to boiling water, regardless of the temperature of the water flowing through the hot water flow path.

(2) To reheat only the hot water that has flowed through the hot water side flow path,
The capacity of the auxiliary heater is small.

(3) Hot water up to boiling temperature can be freely used without changing the heating capacity of the heating device.

(4) It is possible to improve the matching accuracy between the discharge temperature of hot water and the set temperature of hot water.

[Brief explanation of the drawing]

Fig. 1 is a system diagram of a hot water mixing device according to an embodiment of the present invention, Fig. 2 is a relationship diagram between the temperature of hot water flowing through the hot water side flow path and the temperature of discharged water, Fig. 3 is a sequence diagram of the same, and Fig. 4 is a system diagram of a conventional hot water mixing device. 1...Hot water side flow path, 2...Water side flow path, 3
...Mixing valve, 4,7...--Electrical drive device, 5...Temperature detector, 6...Flow rate control valve, 8... ...Auxiliary heater, 9...Controller, 10a...Mixing water temperature setting device, 10b...
...Hot water temperature setting device. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
Figure 4

Claims (2)

[Claims] (1) Through an electric drive device, the opening area of the hot water side flow path and the opening area of the water side flow path are inversely increased or decreased, the mixing ratio of hot water and water is adjusted, and the hot water is heated by the driving direction and driving distance. Side channel/
A mixing valve configured to be able to close both water side flow paths, and an electric drive device in the hot water side upstream flow path of this mixing valve to adjust the flow rate of hot water by increasing or decreasing the opening area of the hot water side flow path. A flow rate control valve, a temperature detector provided downstream of the mixing valve to detect the discharge temperature of the mixed water, and an auxiliary heater provided between the temperature sensor and the mixing valve to reheat the hot water. , a mixing water temperature setting device for arbitrarily setting the discharge temperature of the mixed water, and a hot water temperature setting device for temporarily setting the discharge temperature of the hot water, and the mixing valve and A hot water mixing device comprising a controller that controls the flow rate control valve and an auxiliary heater. (2) When the discharge temperature is set in the hot water temperature setting device,
The controller causes the mixing valve to open on the hot water side and close on the water side, and at the same time makes the temperature detected by the temperature detector equal to the temperature arbitrarily set in the hot water temperature setting device. 2. The hot water mixing device according to claim 1, wherein the flow rate control valve is controlled via the controller.