JPH0573973B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an oil-water mixing device for hot water supply that mixes hot water and water to obtain an appropriate temperature.

BACKGROUND ART Conventionally, there has been a hot water mixing device of this type as shown in FIG. (For example, Japanese Utility Model Application Publication No. 55-59223) In FIG. A side valve body 6 is provided. The hot water side valve body 5 and the water side valve body 6 are attached to a shaft 7 and are driven by a motor 10 via a linear motion conversion mechanism 8 and a gear 9 provided outside. A mixing water temperature detector 11 for detecting the mixed water temperature is provided near the mixing water outlet 3, and the mixing water temperature value set by the mixing water temperature setting device 12 and the mixing water temperature value detected by the mixing water temperature detector 11 are provided. A controller 13 compares the hot water temperature values and controls the motor 10. A faucet 14 for supplying mixed hot water is provided at the terminal. Then, open the faucet 14 and mix water temperature setting device 1.
2 is manually operated to set the mixed water temperature, the controller 13 compares the value of the mixed water temperature detector 11 and the set value of the mixed water temperature, and the motor 10 is driven and controlled to eliminate the temperature deviation between the two. be done.

Problems to be Solved by the Invention However, the above configuration is premised on the use of a commercial power source, and therefore has the following problems.

(1) It was inconvenient that hot water could not be mixed during a power outage.

(2) The work to bring in commercial power was difficult and the work cost was high.

(3) Because high-voltage commercial power is drawn into areas where hot water and water are used, there was a risk of electrical leakage.
As a countermeasure, a transformer was required to lower the voltage.

The present invention solves these conventional problems and aims to provide a hot water mixing device that does not use commercial power.

Means for Solving the Problems In order to solve the above problems, the hot water mixing device of the present invention includes a mixing valve that adjusts the mixing ratio of hot water and water;
An electric drive means for electrically driving the mixing valve, a setting device for setting the mixing water temperature, a controller for controlling the electric drive means according to the setting value of the setting device, and an electric drive means. It is equipped with power generation means to supply power to the controller.

Effects According to the present invention, the controller adjusts the electric drive means, the mixing valve adjusts the mixing ratio of hot water, and the power generation means so that the set value of the setting device can be obtained. It generates electricity and supplies power to electrical drive means and controllers.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

FIG. 1 shows an example in which a thermoelectric generating element that generates electricity by utilizing the temperature difference between hot water and water is used as a power generating means.

The hot water and water supplied through the hot water flow path 15 and the water flow path 16 are supplied through a pressure balance valve 18 provided in the valve body 17.
Then, the hot water pressure and the water pressure are equalized and flow into the mixing valve 19 . The mixing valve 19 has a hot water side valve body 20 and a water side valve body 21.
is configured to change the mixing ratio of hot water and water in inverse proportion to the movement of the shaft 22. Axis 2
2 is driven by a mixing valve motor 23, which is an externally provided electric drive means, via a linear motion conversion mechanism 24. The temperature of the mixed hot water is detected by a thermistor 25, and the mixed hot water passes through a flow rate sensor 26 that detects the flow rate of the mixed hot water, a flow rate control valve 27, a mixed hot water flow path 28, and is supplied from a faucet 29 to the hot water supply target. Ru. The flow control valve 27 is also driven by the flow control valve motor 30. A setting device 31 is provided near the faucet 29 to set the mixed water temperature, the mixed flow rate, the set value of the mixed flow rate, and the like. The mixing valve motor 23 and the flow rate control valve motor 30 are controlled via a controller 32 so that various values set by a setting device 31 are obtained. Now, in the passage between hot water and water in the valve body 17, there is provided a thermoelectric power generation element 33 constructed by joining dissimilar metals, which generates electricity by utilizing the temperature difference between hot water and water. The generated electricity is transmitted to the controller 32, the mixing valve motor 23, and the flow rate control valve motor 3 via the storage battery 34, which is a power storage unit.
0, is supplied to the setting device 31, etc.

In the above configuration, when the desired mixed water temperature, mixed flow rate, etc. to be obtained are set using the setting device 31 and an instruction is given to start hot water supply, the flow rate control valve 27 is opened by the flow rate control valve motor 30 via the controller 32, and the hot water is heated. At the same time, the mixing valve 19 starts adjusting the mixing ratio of hot water and water. To adjust the mixing ratio, the controller 32 compares the set value of the mixed water temperature in the setting device 31 with the mixed water temperature detected by the thermistor 25, and the mixing valve 19 is controlled by the mixing valve motor 23 to obtain the appropriate temperature. activated. In addition, the flow control valve 2
7, so that the mixing flow rate of the setting device 31 can be obtained.
Using the signal from the flow rate sensor 26, the controller 32 controls the flow rate control valve motor 30 to adjust the flow rate. When hot water and water flow, the thermoelectric generating element 33 generates electricity due to the temperature difference between the two, and power is supplied to the controller 32, mixing valve motor 23, flow rate control valve motor 30, setting device 31, and the like. Surplus electricity is stored in storage battery 34
It is used for standby of the control circuit 32, display on the setting device 31, etc. when the amount of power generation is low or when hot water is not being used.

FIG. 2 shows another embodiment of the present invention, in which the power generation means is a hydroelectric power generation mechanism 35 that generates power using the flow of mixed hot water. The hydroelectric power generation mechanism 35 has a blade wheel type structure equipped with a magnet, and the flow of the mixed hot water causes the blade wheel 36 to rotate and generate electricity, and also uses the rotation to measure the flow rate of the mixed hot water. It is. The other configurations and operations are completely the same as those of the first embodiment shown in FIG. 1, so detailed explanations will be omitted. Note that the hydroelectric power generation mechanism may be provided in the water flow path or the hot water flow path in addition to the mixed hot water flow path. In addition to the above two examples, the power generation means may utilize photovoltaic power generation, but a plurality of power generation means may be used in parallel.

In the two embodiments shown above, a thermoelectric power generation element 33 that utilizes the temperature difference between hot water and hot water is used as the power generation means, and a hydroelectric power generation mechanism 35 that utilizes the flow of hot water, water, and mixed hot water is used as the power generation means. As a result, the hot water mixing device itself can generate a power source, and the configuration is simple and power can be supplied when necessary.
Further, since surplus electricity is stored in the storage battery 34, electricity can be stably supplied even when the amount of power generation is insufficient or when the system is not in use. Furthermore, storage battery 3
4 is charged only when hot water is being supplied, and at the same time electricity is consumed by the controller 32, mixing valve motor 23, flow rate control valve motor 30, etc., so that it is possible to automatically prevent overcharging. have.

In the above two embodiments, the mixing valve 19 is controlled using a feedback control method using a signal from the thermistor 25, but the present invention can naturally be applied to open loop control, feedback control, etc. It is.

Effects of the Invention As described above, according to the present invention, the following effects can be obtained.

1. Since there is no need to use commercial power, there is no risk of power outages and stable operation is possible.

2. No commercial power supply lead-in work or transformer required, and can be provided at low cost.

3. It is possible to supply power at low voltage, which prevents danger to the human body due to electrical leakage.

4 It is possible to generate electricity by utilizing the physical state of hot water, water, or mixed hot water itself.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway sectional view of a hot water mixing device according to a first embodiment of the present invention, FIG. 2 is a partially cutaway sectional view of a second embodiment of the same, and FIG. 3 is a conventional hot water mixing device. It is a block diagram of a device. 19 ... Mixing valve, 23... Mixing valve motor (electric drive means), 31... Setting device, 32... Controller,
33...thermal power generation element, 34...storage battery (power storage unit),
35...Hydroelectric power generation mechanism.

Claims (1)

[Scope of Claims] 1. A mixing valve that adjusts the mixing ratio of hot water and water, an electric driving means that electrically drives this mixing valve, a setting device that sets the temperature of the mixed water, and settings of this setting device. A hot water mixing device comprising: a controller that controls the electric drive means according to a value; and a power generation means that supplies power to the electric drive means and the controller. 2. The power generation means is a thermoelectric power generation element that utilizes electromotive force caused by the temperature difference between hot water and water.
Hot water mixing device as described in section. 3. The hot water and hot water mixing device according to claim 1, wherein the power generation means uses a hydroelectric power generation mechanism that generates power by utilizing the flow of hot water, water, and mixed hot water. 4. The hot water mixing device according to claim 1, wherein the power generation means includes a power storage unit.