JP3061869B2 - Hot water mixing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an abnormal temperature control of a hot and cold water mixing apparatus for adjusting a mixing ratio of hot water and water to obtain an optimum mixed hot water temperature.

[0002]

2. Description of the Related Art A conventional hot and cold water mixing apparatus is configured as shown in FIG. The water guided from the water flow path 1 and the hot water guided from the hot water flow path 2 are adjusted to the set temperature by the mixing valve 3 by the controller 18 and the setting device 19, and the hot water temperature detector 13 for detecting the hot water temperature is used. Hot water is supplied from the bathtub spout 6 or the shower spout 7 via the flow control valve 4 and the switching valve 5. At the shower channel outlet 8 of the switching valve 5, a wax thermo-type high cut valve 9 that operates when the temperature is abnormally high is provided for safety.

The configuration of the high cut valve 9 is as shown in FIG. The wax pellet 23 is sealed in the cylinder 10 by the piston 11. When the temperature of the hot water rises, the wax pellets 23 expand and push up the piston 11. At this time, since the tip of the piston 11 is fixed to the high cut valve body 24,
0 starts to move downward in FIG. A valve body 12 is provided at the tip of the cylinder 10 to block the flow path. Conversely, when the temperature of the hot water drops, the wax pellets 23 contract, and the cylinder 10 returns to the original position and opens the flow path by the repulsive force of the spring 25.

If the temperature detector 13 fails and hot water flows into the shower flow path outlet 8, the wax pellets 23 sealed in the cylinder 10 in the high cut valve 9 become hot. And the volume expands at that time, pushing up the piston 11 against the spring 25,
A valve element 12 attached to the cylinder 10 shuts off the flow path and prevents discharge of hot water from the shower water outlet 7.

[0005]

However, the above-mentioned conventional configuration has the following problems. (1) Once the high-cut valve 9 operates, the flow of water in the hot-water mixing device and the high-cut valve 9 stops, and the temperature drops due to natural heat radiation. When you want to use only water, you can't use water. (2) If hot water is used for a long time at the bathtub spout 6,
The high cut valve 9 may malfunction due to heat transfer from the hot water mixing device body and the internal hot water. Also, recently, when a steam sauna or the like is installed, the temperature in the bathroom rises, and the high cut valve 9 may malfunction. In that case the shower cannot be used.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide a safe and highly usable hot and cold water mixing apparatus.

[0007]

In order to achieve the above object, the present invention provides a hot water flow path and a water flow path, a mixing valve for adjusting the flow rate of the hot water flow path and the water flow path to adjust the temperature, and the mixing valve. , A temperature detector for detecting the temperature of the mixed hot water, a flow regulating valve for adjusting the flow rate of the mixed hot water, a flow regulating valve driving device for driving the flow regulating valve, and a flow path. switching
Switching valve, and a plurality of flow paths branched downstream of the switching valve
When the abnormal temperature detector for detecting an abnormal temperature of the mixed water flowing through a predetermined flow path among the plurality of channels, said temperature detection
The mixing valve drive and the flow
A control unit for controlling the regulating valve driving apparatus is as the abnormal temperature detector is provided with means for controlling the mixing valve driving device the hot water flow path is closed in the direction of the mixing valve and to detect an abnormal temperature configuration.

[0008]

According to the present invention, when the abnormal temperature detector detects high-temperature hot water, the mixing valve is immediately driven to close the hot water side and open in the water side to lower the hot water temperature and discharge the hot water from the shower water outlet. To prevent That is, the temperature of the hot water is lowered rather than shutting off the flow path.

[0009]

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings.

[0010] In FIG. 1, 1 is a water channel, 2 is a water channel. Reference numeral 3 denotes a mixing valve that adjusts the flow rate of the water guided from the water flow path 1 and the hot water guided from the hot water flow path 2 to change the temperature, and is configured to be driven by the mixing valve driving device 14. Reference numeral 4 denotes a flow control valve for changing the flow rate of hot water, which is driven by a flow control valve driving device 15. Reference numeral 5 denotes a switching valve for switching a flow path, and a bathtub flow path 6a provided downstream.
Alternatively, it is configured to switch to the bathtub discharge port 6 or the shower discharge port 7 via the shower flow path 8 and to be driven by the switching valve driving device 16. Reference numeral 13 denotes a temperature detector for detecting the temperature of hot water in the hot water mixing apparatus. Reference numeral 17 denotes an abnormal temperature detector provided at the shower channel outlet 8 of the switching valve 5. Reference numeral 18 denotes each of the valve driving devices 14, 15,
16 is a controller for operating 16.

In the above-described configuration, when shower hot water is selected by the setting unit 19, the switching valve drive unit 16 is energized to open the shower channel 8 and close the bathtub channel 6a . Next, when the flow control valve drive device 15 is energized and the flow control valve 4 is opened, water is guided from the water flow passage 1 to the hot water from the hot water flow passage 2 into the hot and cold water mixing device. Is adjusted by the mixing valve 3 and the hot water is discharged from the shower discharge port 7. At that time, the temperature detector 13 detects the temperature of the mixed hot water and sends a signal to the controller 18. The controller 18 compares the detected temperature of the temperature detector 13 with the set temperature of the setting unit 19, and if the actual hot water temperature is lower than the set hot water temperature, the controller 18 moves in the water-side closing and hot-water opening directions, and vice versa. If the temperature is higher than the set hot water temperature, the mixing valve drive device 14 is controlled in the water side opening / hot water side closing direction to operate the mixing valve 3. If the temperature detector 13 or the like breaks down and hot water flows into the shower passage outlet 8 of the switching valve 5, the abnormal temperature detector 17
And sends a signal to the controller 18. Upon receiving the signal, the controller 18 operates the mixing valve driving device 14 in the water-side opening / water-side closing direction. By doing so, the temperature of the hot water in the hot and cold water mixing device drops, and the hot water is not discharged from the shower discharge port 7. Thus, the switching valve 5 provided on the downstream side of the mixing valve 3
Abnormal temperature detection on the side of the shower channel 8
Shower that directly touches human body because dispenser 17 is arranged
During use, abnormal temperature can be detected without fail, ensuring safety.
Can be secured.

FIG. 2 is a flowchart showing the above operation. (Embodiment 2) FIG. 3 shows another embodiment, in which reference numeral 20 denotes a solenoid provided in the mixing valve driving device 14, reference numeral 21 denotes an iron core also provided in the mixing valve driving device, and reference numeral 22 denotes a spring attached to the mixing valve 3. It is.

When the solenoid 20 is energized, the iron core 21 moves and the operation direction of operating the mixing valve 3 is a water-side closing direction and a hot-water side opening direction. As the current to the solenoid 20 is increased, the mixing valve 3 gradually operates in the water side closing / hot water side opening direction. When the energization is stopped, the spring provided on the mixing valve 3 returns the mixing valve 3 to the water side fully open and hot water side fully closed positions at once. Further, the electric power output from the controller is supplied to the solenoid in the mixing valve driving device 14 via the abnormal temperature detector 17.

In the above configuration, when the abnormal temperature detector 17 detects high-temperature hot water, the power to the mixing valve driving device 14 is shut off.
By returning to the water side fully open / hot water side fully closed position at the same time, the temperature of the hot water in the hot and cold water mixing device is lowered, and the hot water is not discharged from the shower water outlet 7.

In this configuration, the abnormal temperature detector 17 can directly cut off the power of the mixing valve driving device 14 irrespective of the controller 18 so that even if the controller 18 becomes uncontrollable, the shower water outlet 7 No hot water is discharged. According to the configuration of this embodiment, the temperature can be quickly lowered instead of shutting off the flow path, so that in the case of an accidental failure, re-recovery can be quickened and reuse is possible. or,
Only water can be used in the event of an abnormality.

Further, even when the temperature is normal, when the hot water is used for a long time at the bathtub spout 6 or when the temperature in the bathroom rises due to a steam sauna or the like, the abnormal temperature detector 1 is generated by heat transfer.
7 operates. However, since re-return can be performed quickly, there is no problem in use, and usability is improved.

[0017]

As described above, according to the hot water mixing apparatus of the present invention, the mixed hot water branched by the switching valve provided on the downstream side of the mixing valve.
Provided an abnormal temperature detector to the shower flow path of the flow path, the abnormality because the temperature detector mixing valve actuating device and detecting an abnormal temperature has been configured to operate on the water side opening and the hot water side closing direction, high
Only when using a shower with danger due to hot and cold water, when abnormal
High temperature hot water can be prevented in
A convenient tapping operation can be ensured. further,
Since the temperature is lowered more promptly rather than simply shutting off the flow path, in the case of an accidental failure, re-recovery can be quick and reuse becomes possible. In addition, only water can be used in the event of an abnormality.

Further, even in a normal state, when high-temperature hot water is used at the bathtub spout for a long time, or when the temperature in the bathroom rises due to a steam sauna or the like, the abnormal temperature detector operates due to heat transfer. However, since re-return can be performed quickly, there is no problem in use, and usability is improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a hot water mixing apparatus according to an embodiment of the present invention.

FIG. 2 is the same flowchart.

FIG. 3 is a configuration diagram of a hot water mixing apparatus in another embodiment.

FIG. 4 is a configuration diagram of a conventional hot water mixing apparatus.

FIG. 5 is a configuration diagram of a wax thermo-type high cut valve.

[Explanation of symbols]

 3 Mixing valve 13 Temperature detector 14 Mixing valve drive 17 Abnormal temperature detector 18 Controller 19 Setting device

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masayoshi Takamitsu 1006 Kadoma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (56) References JP-A-61-52478 (JP, A) JP-A-2-113311 (JP, A)

Claims (1)

(57) [Claims] 1. A hot water flow path and a water flow path, a mixing valve for adjusting the flow rate of the hot water flow path and the water flow path to adjust the temperature, a mixing valve driving device for driving the mixing valve, A temperature detector for detecting, a flow regulating valve for adjusting a flow rate of the mixed hot water,
A flow regulation valve driving device for driving the flow regulating valve, switch the flow path
Switching valve and a plurality of flow paths branched downstream of the switching valve
When the abnormal temperature detector for detecting an abnormal temperature of the mixed water flowing through a predetermined flow path among the plurality of channels, said temperature detection
The mixing valve drive and the flow
Regulating valve comprising a controller for controlling the drive unit, the abnormal temperature detector hot and cold water mixing device for controlling the mixing valve driving apparatus in the direction of closing the hot water flow passage of the mixing valve and to detect an abnormal temperature.