JPS62113981A - Hot water mixing device - Google Patents

Abstract

PURPOSE:To obtain a hot water mixing device which is easy to install and capable of automatically stopping the hot water supply by incorporating in a valve unit a setting unit for setting both the hot water temperature and flow rate, its control unit, a flow rate detector, and an electrical driving means for valves. CONSTITUTION:In a valve unit 41 is installed a housing 41 incorporating a setting unit 43 for both the hot water temperature and mixed flow rate setting, its control unit 44, a mixed flow rate detector 39, a driving motor 36 of a valve piece 33 on the side of hot water, and a driving motor 37 of a valve piece 35 on the side of cold water. Flow rate signals from the mixed flow rate detector 39 and temperature signals from the mixed hot water temperature detector 40 are compared with the values preset in the setting unit 43 in the control unit 44 and then drive signals are sent to driving motors 36 and 37 so that the actual values agree with the preset values. With this constitution, installation and wiring works can be considerably facilitated because all the components of the hot water mixing device are incorporated in the valve unit 41 and further it is possible to stop the supply of hot water automatically by means of the action of the control unit 44.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hot water mixing device for supplying hot water to obtain a suitable temperature by mixing hot water and water.

2. Description of the Related Art Conventionally, there has been a hot water mixing device of this type as shown in FIG. 3 (for example, Japanese Utility Model Application No. 66-69223).

In FIG. 3, a hot water side valve body 6 and a water side valve body 6 are provided inside a valve frame body 4 having an inlet 1 for hot water, an inlet 2 for water, and an outlet 3 for mixed hot water. The hot water side valve body 5 and the water side valve body 6 are connected to the shaft 7
The motor 1o moves the motor 1o via an external linear motion conversion mechanism 8 and a gear 9. A mixed water temperature detector 11 is provided near the mixed water outlet 3 to detect the mixed water temperature, and the mixed water temperature value set by the mixed water temperature setting device 12 and the mixed water temperature value detected by the mixed water temperature detector 11 are provided. The controller 13 compares the mixed water temperature values and controls the motor 1o.

Further, a faucet 16 is provided at the terminal via the pipe 14. When the faucet 15 is opened and the mixing water temperature is set by manually operating the mixing water temperature setting device 12, the value of the mixing water temperature detector 11 and the setting value of the mixing water temperature are compared in the controller 13 as a signal value. The drive of the motor 1o is controlled so as to eliminate the temperature difference between the two.

Problems to be Solved by the Invention However, the above configuration has the following problems.

(1) Valve body 4. Mixed water temperature setting device 12. Since the controller 13 and the like are configured separately, handling is troublesome and requires complicated wiring and piping work on site.

(2) It was impossible to automatically stop hot water supply by instructing the mixed flow rate or integrating the mixed flow rate.

The present invention solves these conventional problems, and aims to provide a hot water mixing device that is easy to handle and install, and that can control flow rate.

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 side valve body and a water side valve body that face the hot water side flow path and the water side flow path and adjust the mixing ratio of hot water and water, a mixed hot water flow path where the mixed hot water flows together, and a valve unit having a mixed water temperature detector provided therein, a mixing flow rate detector for detecting the flow rate of the mixed hot water, etc. in a valve frame; and a hot water side electric drive means for driving the hot water side valve body in this valve unit. , a water-side electric drive means for driving the water-side valve body, a setting device for setting the mixed water temperature and at least the mixing flow rate or the mixed flow integrated value, and the mixing water temperature sensor, the flow rate sensor, and the setting device. The system is equipped with a frame housing an electrical component including a controller for controlling the hot water side electric drive means and the water side electric drive means based on signals.

Effects of the present invention is based on the above-described configuration.If the desired mixed water temperature, mixed flow rate, and mixed flow integrated value are set using the setting device, the signal from the setting device and the signals from the mixed hot water temperature detector and the flow rate detector can be synchronized. The controller compares or integrates the flow rate, and the electric drive means on the hot water side drives and adjusts the valve body on the hot water side, and the electric drive means on the water side drives and adjusts the water side valve body so that there are no temperature deviations or flow rate deviations. The system automatically stops the supply of mixed hot water at a desired integrated flow rate.

EXAMPLE Hereinafter, an example of the present invention will be explained based on FIGS. 1 and 2.

FIG. 1 is a system diagram for making the actual configuration example of the present invention shown in FIG. 2 easier to understand. Inside the valve frame 16, a hot water side flow path 18 connected to a hot water supply path 17 and a water side flow path 2o connected to a water supply path 19 are provided. The supplied hot water is passed through a temporary stop valve 22 on the hot water side provided in the hot water side connection tube 21. A hot water side filter 24 provided in the hot water side connection tube 23. It passes through the hot water side check valve 25 and reaches the pressure balance valve 26 . Similarly, water is supplied to the water side temporary water stop valve 28 of the water side connection pipe 27. Water side filter 30 of water side connection tube 29. It reaches the pressure balance valve 26 via the water side check valve 31. In the pressure balance valve 26, the pressures of hot water and water are adjusted to equalize the secondary pressures. A hot water side valve seat 32 and a hot water side valve body 33 face the hot water side flow path 18 downstream of the pressure balance valve 26 . Further, a water-side valve seat 34 and a water-side valve body 36 face the water-side flow path 20 . The hot water side valve body 33 and the water side valve body 36 are driven by a hot water side motor 36 and a water side motor 37, which are two independent electric drive means. The hot water whose mixing ratio has been adjusted and the water merge and flow through the mixed hot water channel 38. This mixed hot water flow path 38 is provided with a flow rate detector 39 and a mixed hot water temperature detector 4o, and the flow rate detector 39 promotes mixing of hot water and water. These valve frames16. Hot water side flow path 18. Water side channel 20. Hot water side valve seat 32. Hot water side valve body 33.
Water side valve seat 34. Water side valve body 36. Mixed hot water flow path 38. Flow rate detector 39. A valve unit 41 is composed of a mixed hot water detector 40 and the like. A frame body 42 covers the surface of the valve unit 41 and is installed in such a manner that the valve unit 41 is not directly touched by hands or the body. Inside the frame 42, the hot water side motor 36 and the water side motor 37 are provided, and the low setting device 43 and the controller 44 are also installed. Setting device 43
As shown in Fig. 2, the operation unit faces the surface of the frame 42 through a waterproof membrane, and is used to set the mixed water temperature and the integrated value of the mixed water flow rate. . The mixed water temperature and the mixed flow rate can be set by operating the switch 46 and taking out values stored in the controller 44 in advance. However, the integrated value of the mixed hot water flow rate can be adjusted and set using a dial 46 that also serves as a switch. The controller 44 compares the setting device 43 with the signals from the mixed hot water temperature detector 40 and the flow rate detector 39, or the integrated value signal of the flow rate detector 39, and controls the hot water side motor 36 and the water side motor 37. The mixing ratio and mixing flow rate are adjusted, and the hot water supply is stopped when the integrated flow rate is reached. Furthermore, since the setting device 43 displays the mixed water temperature and flow rate, the signals from the mixed water temperature detector 40 and flow rate detector 39 are
It is utilized via the controller 44. Note that the mixed hot water is supplied to the user from a faucet 47 forming a part of a valve unit 41 provided at the end of the mixed hot water flow path 38. In addition, the controller 44 and the hot water side motor 36. Power is supplied to the water side motor 37 and the like from the electric wire through the through hole 48 . Note that the electric circuit 49 for signal processing of the flow rate detector 39 is also housed within the frame 42, eliminating the need to provide a separate frame.

Next, the operation will be explained. When the switch 45 of the setting device 43 is turned on to instruct the start of hot water supply, the hot water side motor 36 and the water side motor 37 operate according to the command from the controller 44, and the hot water side flow path 18
The water side flow path 2o is opened, and hot water and water flow out. and,
The mixed water temperature detected by the mixed water temperature detector 4o and the setting device 4
The mixed water temperature signals stored in the controller 44 corresponding to the switch 46 of No. 3 are compared by the controller 44, and the mixing ratio is adjusted by the hot water side valve body 33 and the water side valve body 36 so as to eliminate the deviation. do. At the same time, the mixed flow rate signal stored in the controller 44 corresponding to the setting device 46 is also transmitted to the flow rate detector 3 by the controller 44.
It is compared with the signal of 9 and the flow rate is adjusted. The hot water that has been mixed and whose flow rate has been adjusted is supplied from the faucet 47 to the hot water supply target. The faucet 47 forms part of the valve unit 41, and mixed hot water can be supplied within a short distance from the mixed water temperature detector 4°, so that the actually supplied mixed water temperature and the set mixed water temperature are different. The error is extremely small. Although the setting device 43 is not particularly shown, when an operation is performed to instruct a change in the set hot water temperature, the hot water side valve body 33 and the water side valve body 35 are driven in opposite directions.
The mixed water temperature is adjusted while keeping the mixing flow rate constant. If you want to change the flow rate of the mixed hot water that is supplied, change the set value with the setting device 43, and the hot water side valve body 33 and the water side valve body 36
are driven in the same direction, and the flow rate is adjusted while keeping the mixing ratio constant. Furthermore, if there is a fluctuation in water pressure or hot water pressure, the pressure balance valve 26 acts to alleviate the influence and keep the mixed hot water temperature constant. When you want to stop the hot water supply, turn the switch 46 "
When turned off, the hot water side valve body 33 and the water side valve body 36 are respectively closed and come into contact with their respective valve seats, stopping the supply of hot water and water. In these control operations, the setting device 43. Controller 44. Hot water side motor 36. Water side motor 37. Since the flow rate detector 39°, mixed water temperature detector 40, etc. are installed in close proximity, the wiring distance can be shortened, and the influence of external noise on the wiring can be reduced. In addition, the controller 44 and the hot water side motor 36. Since the electricity supplied to the water side motor 37 is supplied from the electric wire through the through hole provided in the frame, the mixed hot water used at the faucet 47 will not be unnecessarily applied to the controller 44 or the motor. This can be prevented, and there is no need for a special built-in power supply. Next, if you want to automatically stop the hot water supply after a certain amount of mixed hot water has been supplied to the bathtub, for example, turn the dial 46 "on" and specify the integrated flow rate value, and the mixed water temperature will be stored in the same way as with the switch 45. Hot water supply is started at the flow rate, and the flow rate signal from the flow rate detector 39 is counted by the controller 44.

Then, when the cumulative flow rate value set by the dial 46 is reached, the hot water side motor 36 and the water side motor 37 operate to close the hot water side valve body 33 and the water side valve body 36 to stop hot water supply. In this control, since the faucet 47 is integrally provided with the valve unit 41, the mixed water temperature sensor 40
The volume of the flow path between the two is small, and only a small amount of water remains in the flow path when hot water supply is stopped. Therefore, it takes a short time to reach the target mixed water temperature at the start of hot water supply, and the average temperature of the bathtub is very close to the set value.

In addition, the construction consists of a frame 4 that houses a valve unit 41 and an electrical component.
2 can be handled as one unit, it is only necessary to connect the hot water side connection tube 21 and the water side connection tube 27 to the hot water supply path 17 and the water supply path 19 and wire the electric wires.

The advantages of this embodiment are that the setting device 43 is easy to operate because hot water can be supplied at a pre-stored mixed water temperature and mixed flow rate by operating one switch 46 or 4e; The 49th part of the electrical circuit 39 is the frame 42
Since it is housed inside, there is no need to provide a separate frame, which simplifies the structure.

Effect of the invention (1) Valve unit includes setting device, controller, and flow rate detector.

Since it is equipped with a frame housing a built-in electric drive means, it is easy to handle and construct, and the mixing water temperature and mixing flow rate can be set in the area where it is used.

(2) Flow rate adjustment and flow rate integration can be stopped using the signal from the flow rate detector. Additionally, a flow rate detector can promote stirring of the mixed water.

(3) Since the frame is attached to the valve unit, it is possible to prevent your hands or body from touching the surface of the hot water side flow path of the valve unit and getting burned during use.

(4) Setting device, controller, electrical drive means, flow rate detector,
Since the wiring distance connecting the mixed water temperature detector and the like can be shortened, the influence of external noise can be reduced and malfunctions can be prevented.

(6) Since the faucet forms part of the valve unit, the distance to the mixed water temperature detector can be shortened, so when filling a bathtub with a certain amount of mixed hot water, there is a difference between the average temperature and the set value. few.

[Brief explanation of drawings]

FIG. 1 is a system diagram of an embodiment of the present invention, and FIGS. 2 a to C are a top view, a front view, and a side view including a partial cross section showing the same structure.
FIG. 3 is a sectional view showing a conventional hot water mixing device. 17...Hot water supply path, 18...Hot water side flow path, 19...Water supply path, 2o...Water side flow path, 32... ...Hot water side valve seat, 33...Hot water side valve body, 34...Water side valve seat, 35 Water side valve body, 36
...Hot water side motor (hot water side electrical drive means), 37
...Water side motor (water side electric drive means), 38
...Mixed water flow path, 39...Flow rate detector, 40...Mixed water temperature detector, 41...
Valve unit, 42... Frame, 43...
Setting device, 44...Controller, 46.46...
...Switch, 47...Faucet, 49...
・Flow rate detector electrical circuit. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (3)

[Claims] (1) A hot water side flow path connected to the hot water supply path in the valve frame, a water side flow path connected to the water supply path, a hot water side valve seat facing the hot water side flow path, and a hot water side valve body. , a water side valve seat and a water side valve body facing the water side flow path, a mixed hot water flow path where hot water and water flow together, a mixed hot water temperature sensor installed in this mixed hot water flow path, and a mixed hot water temperature sensor installed in this mixed hot water flow path. a valve unit configured with a flow rate detector that detects the flow rate of the water, a faucet provided at the end of the mixed hot water flow path, a frame body attached to this valve unit, and the hot water side valve body provided in the frame body. and a water-side electric drive means for driving the water-side valve body and a water-side electric drive means; and a setting device having an operation unit facing the surface of the frame and setting the mixed water temperature and at least the mixed flow rate or the integrated value of the mixed flow rate. , a hot water mixing device comprising a controller that controls the hot water side electric drive means and the water side electric drive means based on signals from the mixed hot water temperature detector, the flow rate detector, and the setting device, which are also provided in the frame. . (2) The hot water mixing device according to claim 1, wherein the setting device indicates the pre-stored mixed water temperature and mixing flow rate by operating a single switch. (3) The hot water mixing device according to claim 1, wherein the electric circuit of the flow rate detector is also housed within the frame.