JPH02199376A - Hot water/water mixing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hot water mixing device that adjusts the mixing ratio of hot water and water to obtain an optimal mixed water temperature.

2. Description of the Related Art Conventionally, there has been a hot water mixing device of this type as shown in FIG.

In FIG. 5, ▪ is a hot water flow path, 2 is a water flow path, and an automatic pressure regulating valve 3 is provided in association with each flow path. The automatic pressure regulating valve 3 includes a hot water side valve body 4 that reduces the primary pressure PH1 of the hot water side flow path 1, a hot water side valve seat 5, and a water side valve body 6 that reduces the primary pressure Pct of the water side flow path 2. , the water side valve seat 7, the valve shaft 8 connecting the hot water side valve body 4 and the water side valve body 6, and the 1 pyrotechnic PH after depressurizing the hot water and water.
It is composed of a piston 9 that operates based on the pressure difference between I and PCI, and even if the pressure of hot water or water suddenly changes, the automatic pressure regulating valve 3 moves with that pressure, and the secondary pressure PH2 and PC2 ratio of hot water and water are adjusted. The temperature control valve 12 energized by the motor 11 is moved left and right to change the temperature of the mixture.

13 is a mixing part for hot water and water, and after mixing, hot water is discharged via a flow rate mu on-off valve 14, and its temperature is determined by a thermistor 15.
The flow rate is detected by the flow rate sensor 16, and the controller 1 activates the motor 11 and the flow rate adjustment valve 14 to match the value of the setting device 17.

Problems to be Solved by the Invention However, in the above configuration, the automatic pressure regulating valve 3 and the temperature regulating valve 12 are independent, which results in a large size.

Furthermore, the configuration is simple and manual operation is not easy.

The present invention solves such conventional problems, and the first object is to obtain a small-sized mixing device that combines the functions of a pressure regulating valve and a temperature regulating valve, and to enable operation of the device with a simple configuration. There is a particular thing. A second object of the present invention is to simplify switching between automatic operation and the aforementioned manual operation.

Means for Solving the Problems In order to achieve the above-mentioned first object, the hot water mixing device of the present invention has a hot water flow path, a water flow path, a hot water side valve body for adjusting the flow rates of the hot water path and the water path, and a water side valve body for adjusting the flow rates of the hot water path and the water path. A valve body, a valve stem that opposes the forces due to the outlet pressures of the hot water side valve body and the water side valve body, a biasing means that biases the valve stem, and a variable bias force that opposes the force of the biasing means. The device is equipped with variable bias means for changing the force of the biasing means, and adjustment operation means for changing the force of the urging means.

Furthermore, in order to achieve the second object, the hot water mixing device of the present invention is provided with means for determining the position of the adjustment operation means.

Effects With the above-described configuration, the balance point of pressure regulation can be moved by changing the bias force, making it possible to change the mixing ratio of hot water. Further, the adjustment operation means allows manual operation, and the position determination means facilitates setting of the initial position.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings. Note that FIG. 1 is a sectional view of the hot water mixing device, and the same parts as in FIG. 5 are given the same numbers.

Numeral 19 is a biasing means, and 20 is a variable biasing means that opposes the force of the biasing means 19 and applies a variable bias force. The variable bias means 20 has a plunger 21 made of a magnetic material, and a waterproof and insulated coil 22 around the plunger 21, and the coil 22 is connected to the variable IT source 2.
Connected to 3. The strength of the force of the biasing means 19 is 2
The adjustment can be made by rotating the adjusting operation means 24 having the number 4a. The biasing means 19 is composed of a spring, for example, and one of the springs 19 is fixed to the automatic pressure regulating valve 3, and the other is fixed to the 11-bar operating means 24, respectively. 25 is a casing.

Next, the present invention will be explained in detail. When a current is passed through the coil 22 from the external mold #23, the plunger 21 made of a magnetic material applies a bias force to the valve shaft 8 according to Fleming's law. The automatic pressure regulating valve 3 is balanced when the biasing forces of the bias force and the biasing means 19 are balanced. Therefore, by changing the current flowing through the coil 22, the automatic pressure regulating valve 3
For example, when the current is small, the force of the biasing means 19 is stronger, so the water side valve body 6 opens more than the hot water side valve body 4, and the outlet temperature is low ( When the IT flow is increased, the plunger 21 is pushed out against the force of the biasing means 19, which causes the hot water side valve body 4 to open, resulting in a higher hot water temperature.When the water pressure fluctuates, the automatic pressure regulating valve is activated as in the past. 3 operates and the pressure receiving areas of the hot water side valve body 4, the water side valve body 6, and the piston 9 are made equal.
The next pressure PH2 and PC2 are maintained at a balance point by the urging means 19 and the variable bias means 20, and the change in the mixing ratio of hot water and water is small and the hot water temperature is stable.

Control by the variable bias means 23 becomes impossible when the power supply is stopped due to a power outage or when the device becomes uncontrollable due to some abnormality. In this case, the water temperature can be adjusted by manually rotating the adjusting operation means 24. Since both ends of the biasing means 19 are fixed to the automatic pressure regulating valve 3 and the adjustment operation means 24, respectively, positive and negative forces can be generated by rotation of the adjustment operation means 24. Even during manual adjustment, the automatic pressure regulating valve 3 operates when water pressure fluctuates, so fluctuations in water temperature are small.

Next, another embodiment of the adjustment operation means will be described. Second
In the illustrated embodiment, a cover 26 is attached to the casing 25 so as to cover the adjustment operation means 24, and is arranged so that the protrusion 24b of the adjustment operation means 24 and the hole 26a of the cover 26 engage with each other. The cover 26 and the protrusion 24b are each marked with a mark as shown in FIG. 3(A), indicating the initial setting position of the biasing means. As a result, even if the adjustment operation means is operated by manual adjustment, the container 5 can be returned to the initial position by aligning the marks when switching to automatic adjustment. Alternatively, as shown in FIG. 3(B), by providing a bottle 24c in the adjustment operation means 24 and providing a cutout hole 26b in the cover 26, the cover 26 cannot be attached when the adjustment operation means 24 is at a position other than the initial setting position. In the embodiment shown in FIG. 4, a magnet 27 is attached to the adjustment operation means 24, and a reed switch 28 is provided to the cover 26 to detect the detection by electrical means. It is.

Other possible electrical detection methods include a mechanical switch and an optical switch.

Effects of the Invention As described above, the hot water mixing device of the present invention has a hot water flow path and a water flow path, a hot water side valve body and a water side valve body that adjust the flow rates of the hot water passage and the water passage, and a hot water side valve body and a water side valve body that adjust the flow rates of the hot water flow path and the water flow path. A valve stem that makes forces due to the outlet pressure of the side valve body oppose each other, a biasing means that biases the valve stem, a variable biasing means that applies a variable bias force that opposes the force of the biasing means, and a biasing means that applies a variable bias force that opposes the force of the biasing means. Equipped with an adjustment operation means to vary the force, manual operation is possible with a simple configuration, and even in the event of a power outage or unexpected failure, the mixed water temperature can be easily adjusted, and the pressure can be automatically adjusted even during manual adjustment. Since the balance function is maintained, fluctuations in water temperature due to fluctuations in water pressure are small.

In addition, since a position determination means for the adjustment operation means is provided, the initial position setting is maintained when switching from manual to automatic mode, and the stability of the hot water temperature is highly reliable.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a hot water mixing device according to one embodiment of the present invention, Fig. 2 is a sectional view of the U4M operating means of another embodiment, and Fig. 3 (A) CB) is a sectional view of the same adjustment operating means. Bottom view, 4th
The figure is a cross-sectional view of the adjusting operation means section of another embodiment, and FIG. 5 is a structural cross-sectional view of a conventional hot water mixing device having a pressure regulating section and a temperature regulating section. 1...Hot water flow path, 2...Water flow path, 4...
...Hot water side valve body, 6...Water side valve body, 8...
...Valve stem, 19...Biasing means, 20...
... Variable bias means, 24 ... Adjustment operation means, 24b, 24c, 27 ... Position determination means. Name of agent: Patent attorney Shigetaka Awano Haka1 person 1-;11
1 passage ε-water passage 4- turbidity control valve figure 24-￥A section operating means 24b--1 Figure 6<A)

Claims (2)

[Claims] (1) A hot water passage, a water passage, a hot water side valve body and a water side valve body that adjust the flow rates of the hot water passage and the water passage, and a force due to the outlet pressure of the hot water side valve body and the water side valve body. a valve shaft that opposes each other, a biasing means that biases the valve shaft, a variable bias means that applies a variable bias force opposite to the force of the biasing means, and an adjustment that varies the force of the biasing means. A hot water mixing device equipped with an operating means. (2) The hot water mixing device according to claim (1), further comprising a position determining means.