JPS62109108A - Hot water and water mixing device - Google Patents

Abstract

PURPOSE:To prevent such a case where the boiling water is discharged or the temperature level is unstable when the discharge of the hot water is started, by transmitting the drive stopping signal to an electric driver for a mixing valve from a closure detecting means when a switch lever is operated at the closure side and fixing the position of a mixing valve. CONSTITUTION:A closure detecting means 34 is provided with a reed switch 33 and a magnet 35 attached to a switch lever 32 and detects that the position of a switch valve 31 is set at a position where the injection of the mixed water is stopped. The switch 33 works when the switch lever 32 is set at the closure side. Thus the drive of an electric driver 25 is stopped and a mixture valve 21 is fixed. Thus the opening area is fixed with a hot water path 15 and a water path 16 to prevent such a case where the boiling water is discharged and the temperature level is unstable when the hot water is discharged. This secures again the hot water discharging state set before the drive of the driver 25 is stopped.

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 appropriate temperature.

2. Description of the Related Art A conventional hot water mixing device of this type is shown in FIG. (For example, Japanese Utility Model Publication No. 55-59223) In Fig. 3, hot water inlet 1, water inlet 2, and mixed water outlet 3
The inside K1-1 of the valve body 4 has a K1-1. A hot water side valve body 5 and a water side valve body 6 are provided to adjust the mixing ratio of hot water and water.

The hot water side valve body 5 and the water side valve body 6 are fixedly provided on a shaft 7, and this shaft 7 is driven by a motor 1o via an external screw machine 8 and a gear 9.

The temperature of the mixed water is detected by a temperature detector 11, and the controller 13 drives and controls the motor 10 to adjust the temperature of the mixed water so as to eliminate the temperature deviation with the temperature setting device 12. That is, when the desired mixed water temperature is set with the temperature setting device 12, the temperature detector 11 monitors the mixed water temperature, and the motor 10 moves the hot water side valve body 5 and the water side valve body 6 to a position where an appropriate temperature can be obtained. It is something to control.

Problems to be Solved by the Invention However, in the above configuration, when the faucet 14 or the like is closed and the supply of mixed water is stopped, the temperature around the temperature sensor 11 will cool down due to natural cooling. Accordingly, in order to obtain the mixed water temperature specified by the temperature setting device 12, the hot water side valve body 5 is driven in the opening direction and the water side valve body 6 is driven in the closing direction, so that when hot water supply is restarted, hot water is discharged. It was dangerous.

The present invention is intended to solve these conventional problems, and aims to stop the control of the mixing valve when the discharge of mixed water stops, thereby preventing the discharge of hot water when hot water is re-discharged.

Means for Solving the Problems In order to solve the above problems, the hot water mixing device of the present invention has the following features:
A hot water flow path and a water flow path, a mixing valve that increases or decreases the opening area of the vortex flow path and the opening area of the water flow path to adjust the mixing ratio of hot water and water, an electric drive device that drives the mixing valve; A temperature detector detects the water temperature, a setting device sets the desired mixed water temperature, and the signal of the setting word is compared with the signal of the temperature sensor, and the t-air drive device of the mixing valve is controlled based on the amount of deviation. downstream of the mixing valve, an on-off valve for dispensing and stopping the mixed water, an on-off lever connected to the valve body of the on-off valve, and a mll on-off valve position for stopping the discharge of the mixed water. and a closing detection means for stopping the electric drive device of the mixing valve when detecting that the mixing valve is in the position.

Effect of the present invention With the above-described configuration, the mixed water temperature set by the setting device and the mixed water temperature detected by the temperature detector are compared, and the controller sends a signal to the electric drive device based on the amount of deviation. , the opening areas of the hot water flow path and the water flow path are increased or decreased in inverse proportion to the set mixed water temperature and temperature detection39. It stabilizes when the temperatures detected during the pilgrimage match = When the sea urchin mixture valve is controlled and the open/close lever is operated to the closing side, a signal is sent from the closure detection means to the electric drive device of the mixing valve to stop driving. The mixing valve position is fixed to prevent hot water from being discharged or the temperature to become unstable when hot water is started again.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. In FIGS. 1 and 2, hot water flow path 15 and water flow path 1
6, a hot water side valve body 17 and a hot water side valve seat 18 that change the opening area of the hot water flow path 16, and a water side valve body 19 and a water side valve seat 20 that change the opening area of the water flow path 16. A valve 21 is provided, and the hot water side valve body 17 and water side valve body 19 are connected by a shaft 22, and perform an inversely proportional opening/closing operation via an electric drive device 25 composed of a motor 23 and a gear 24.

The temperature of the mixed water is detected by a thermistor 26 provided as a temperature detector immediately after the mixing valve 21, and the signal from the thermistor 26 is compared with the signal from the setting device 27 for setting the desired mixed water temperature, and control is performed based on the amount of deviation. The # device 28 sends a signal to the electric drive device 25 to control the mixing valve 21, and electrically adjusts the mixing ratio of hot water and water so as to obtain a mixed water temperature equal to the set temperature. Downstream of the mixing valve 21, two ceramic discs 29 and 30 each having an opening are superimposed.

Depending on the positional relationship between the openings, there is an on-off valve 31 for starting and stopping the mixed water, and the two ceramic discs 29.3
One of the two is fixed, and the other is connected to the opening/closing V-bar 32. When the lever 32 is operated and the opening and closing are aligned, mixed water will be dispensed, and the amount of hot water dispensed will be determined by the degree of opening. If the openings are out of alignment, it will stop.

When the opening/closing lever a2 is operated to the closing side, a reed switch 33 provided on the main body side is activated.

A closure detection means 34 detects that the valve position of the on-off valve 31 is at a position where discharge of mixed water is stopped.

It is composed of the reed switch 33 and a magnet 35 provided on the opening/closing lever 32.

With the above-mentioned purchase, when the opening/closing lever 32 is operated to the closing side, the reed switch 33 is activated, and the
5 is stopped, and the mixing valve 21 is fixed. In other words, the opening areas of the hot water flow path 15 and the water flow rate 16 are fixed, and when the hot water is re-discharged, the hot water is prevented from being discharged under pressure or the temperature becomes unstable, and the hot water is immediately discharged to the same level as when the hot water is stopped. It is.

In addition, the on-off valve has a structure in which two ceramic discs 21 and 30, each with an opening, are stacked one on top of the other, so it has excellent durability and reliability, and the opening and closing lever 32 can be operated by sliding the on-off lever 32, making it easy to operate. Even the elderly and children can easily handle it.

Effects of the Invention As described above, the hot water mixing device of the present invention provides the following effects.

(1) Longer equipped with a closure detection means to detect hot water supply stoppage,
By stopping the mixing valve position when it is closed, hot water is prevented from being discharged or the temperature from becoming unstable when hot water is re-discharged.

(2) The opening/closing lever slides to turn on and off the mixed water, making the operation easy and convenient for the elderly.
Even children can handle it easily.

(3) When re-dispensing hot water, the mixing valve starts from the valve position before stopping, so unless the set temperature is changed, the target mixed water temperature can be obtained quickly.

(4) If the drive device is configured to stop driving when hot water is stopped, unnecessary energy usage can be reduced.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a hot water mixing device according to an embodiment of the present invention, and FIG. 2 is an enlarged perspective view of the on-off valve in FIG. 1. FIG. 3 is a block diagram of a conventional hot water mixing device. 15...Hot water flow path, 16...Water flow path, 2
1...Mixing valve, 25...K pneumatic drive device, 26...Temperature detector, 27...Setting device, 28...Control Vessel, 31... ... Opening/closing valve, 32... Opening/closing lever, 34...
...Closing detection means. Name of agent: Patent attorney Toshio Nakao (1 person)
-- Kaimonben No. 2 Figure J2 -- Ikkai 1
Satoreba ~ Awn --- Shushu attack and child support

Claims (3)

[Claims] (1) A hot water flow path and a water flow path, a mixing valve that increases or decreases the opening area of the hot water flow path and the opening area of the water flow path to adjust the mixing ratio of hot water and water, and an electric drive that drives the mixing valve. A device, a temperature detector for detecting the mixed water temperature, and a setting device for setting the desired mixing water temperature, compare the signal of the setting device with the signal of the temperature sensor, and adjust the electrical voltage of the mixing valve according to the amount of deviation. a controller for controlling a drive device, an on-off valve for supplying and stopping the mixed water downstream of the mixing valve, an on-off lever connected to a valve body of the on-off valve, and a valve position of the on-off valve that controls the mixing water. A hot water mixing device comprising: closure detection means for stopping an electric drive device of the mixing valve when detecting that the mixing valve is at a position where discharge is stopped. (2) The hot water mixing device according to claim 1, wherein the closure detection means comprises a reed switch and a magnet provided on the opening/closing lever. (3) The hot water mixing device according to claim 1, wherein the on-off valve is constructed by stacking two ceramic discs each having an opening.