JPS6083112A - Mixer of water and hot water - Google Patents

Abstract

PURPOSE:To obtain a water/hot water mixer having high safety by detecting the presence or absence of hot water supply by a flow rate detector and informing that the volume of hot water reached the set value after performing the start- stop control of a mixing valve drive part and integrating the flow rates detected by a flow rate detector. CONSTITUTION:When a faucet 21 is opened, a controller 24 compares a temperature setting signal set by a hot water supply controller 23 with a signal of mixed hot water temperature detected by a temperature detector 34. Then a mixing valve 36 is driven at the position where the deviation of both compared signals is set at 0 (normal mixing action). While the controller 23 sets the total hot water volume supplied to a bathtub 22 together with the temperature of mixed hot water. Then the faucet 21 is opened. Thus the valve 36 starts a mixing action and at the same time the integration is started by the controller 24 for the flow rate detected by a flow rate detector 35. When the integrated value of flow rate of the mixed hot water reaches the set value, a buzzer of the controller 23 delivers an alarm with a command of the controller 24.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hot water mixing device that mixes hot water and water to supply hot water at a set temperature.

Conventional Structure and Problems Conventionally, this type of hot water mixing device has been structured as shown in FIG. That is, in FIG. 1, a valve shaft 1 is moved forward and backward by the drive of a servo motor 2. As shown in FIG. 3
is a double-sided pulp on the hot water side that adjusts the amount of high-temperature hot water, and the double-sided pulp 3 on the hot water side is fixed to the tip of the valve shaft 1. 4 is a single-sided pulp on the water side that adjusts the amount of cold water, and a spring 5 is interposed between it and the double-sided pulp 3 on the hot water side, so that it can move only in the direction of the double-sided pulp 3 on the hot water side with respect to the valve shaft 1. . Further, 6 is one hot water side sheet formed at the outlet of the hot water supply path 8 in the hot water side valve chamber 7, and 9 is the other hot water side sheet formed in the hot water side valve chamber 7 opposite to the hot water side sheet 6. The hot water side seat 9 is also disposed between the hot water side valve chamber 7 and a mixing chamber 11 to be described later. The hot water side double-sided valve 3 is installed between these two hot water side sheets 6.9, and as the valve shaft 1 moves back and forth, the hot water side double-sided pulp 3 comes into contact with and separates from the two hot water side sheets 6.9 in opposite ways. They are related and the opening degree of each can be adjusted. Reference numeral 10 denotes a water-side sheet formed at the outlet of the water supply channel 12 in the mixing chamber 11 to which also serves as a water-side valve chamber. It is designed to change and adjust its opening degree. The mixed hot water mixed with Yuyoshi water is supplied through the mixed hot water outlet path 13, and this mixed hot water outlet path 13 is provided with a hot water temperature sensor 14. 15 is a hot water supply heat source machine.

In order to obtain the hot water temperature set by a temperature setting device (not shown), this conventional example detects the mixed hot water temperature using the outlet hot water temperature sensor 14, and uses the servo motor 2 to detect the double-sided pulp 3 on the hot water side and the hot water side on the water side. The single-sided pulp 4 is driven to change the mixing ratio of hot water and water.

When the mixed water temperature is lower than the set value, the valve stem 1 moves to the right side in the figure, and the water side single-sided pulp 4 narrows the water supply channel 12, and at the same time, the hot water side double-sided pulp 3 opens the hot water supply channel 8 and sets the temperature. Move to the position where you can get the value. If the mixed water temperature is higher than the set value, move in the opposite direction.

If the hot water heat source device 15 is an instantaneous type, if a large amount of hot water is dispensed, the heating cannot keep up, and if the temperature of the hot water drops below the set value even when the water is fully closed, the valve stem will move significantly to the right. , the hot water side double-sided pulp 3 approaches the hot water side sheet 9. As a result, the amount of water passing through the hot water heat source device 15 is regulated, so that a high temperature as per the set value can be obtained.

This conventional hot water mixing device had the following problems.

(1) Since there is no means to detect whether hot water is being supplied or not, when the mixed hot water outlet passage 13 cools down due to natural cooling when hot water supply is stopped, the hot water temperature sensor 14 detects this and the pulp absorbs hot water. Because it moves so that the ratio increases,
When refilling hot water, hot water would temporarily come out, which was dangerous, and it took time to move to a position where the appropriate temperature could be obtained.

(2) When filling a bathtub or the like with hot water, there was no means by which humans could sense when a predetermined amount of hot water had accumulated.

In addition to the conventional examples mentioned above, there is also a Curran-type automatic mixing valve that uses the thermal expansion and contraction of wax to drive the pulp and adjust the mixing ratio of hot water and water, and an automatic water meter that uses the mechanism of a tap water meter to drive the pulp. There was an automatic mixing metered water stop valve that was combined with a metered water stop valve that shut off water. However, the problem (1) of the prior art in No. 10 still remains unsolved, and since it is mechanically constructed, the structure is complicated and remote control is not possible.

OBJECTS OF THE INVENTION The present invention provides a hot water mixing device that solves these conventional problems, has excellent safety and responsiveness, has a simple configuration, and issues an alarm when a fixed value is reached. The purpose of this invention is to provide a hot water mixing device that can perform the following functions.

Structure of the Invention To achieve this object, the present invention provides a mixing valve for mixing hot water and water, a driving device for the mixing valve, a temperature detector for detecting the temperature of the mixed water, a temperature setting device for high temperature mixing, A flow rate detector that detects the amount of mixed hot water, a hot water amount setting device that sets the integrated value of the mixed hot water amount, an alarm, and a controller are provided. Improves safety and responsiveness by controlling the drive device based on the flow rate detector and the water flow rate setting device, and by issuing an alarm when the cumulative amount of mixed hot water reaches the set value based on the signals from the flow rate detector and hot water rate setting device. This realizes an alarm that notifies you that a quantitative value has been reached.

DESCRIPTION OF EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS. 2 and 3.

In FIG. 2, hot water produced by a hot water supply heat source @16 is supplied to a mixing unit 18 through a hot water supply pipe 17. A water supply pipe 19 is also connected to the mixing unit 18, and the mixed hot water is supplied from a faucet 21 to a bathtub 22 through a mixing water pipe 20. A hot water supply controller 23 is provided near the faucet 21 and is capable of setting the temperature and amount of hot water, and has a built-in buzzer as an alarm. This hot water supply controller can be installed not only near the bath faucet but also in the kitchen, housekeeping room, etc. Signals are exchanged between the hot water supply controller 23 and the controller 24 . The detailed configuration of the mixing unit 18 is shown in FIG. The mixing ratio of the hot water and water supplied from the hot water inlet 25 and the water inlet 26 is adjusted by the hot water side valve body 27 and the water side valve body 28, and the mixture is supplied from the mixed hot water outlet 29 to the faucet.

Both ends of the hot water side valve body 27 and the water side valve body 28 are regulated by the valve shaft 3o and are biased by springs in directions away from each other. ``3□". Detection of the mixed water temperature is performed by a temperature detector 34. Also, 35 is a flow rate detector, which includes a hot water side valve body 27, a water side valve body 28, and a valve shaft 3o. The flow rate detector 3-5 is provided between a mixing valve 36 and a temperature detector 34, which are configured by a fixed impeller 37 that swirls the flow, and a ball 3 that rotates due to the swirling flow.
8. ! , a ball outflow prevention means 39, and a magnetic resistance element 4o for detecting the rotation of the ball. Mixing valve 3
Mixing of the hot water and water whose ratio has been adjusted in step 6 is promoted by the flow rate detector 35, and temperature fluctuations due to insufficient mixing at the temperature detector 34 are eliminated. Signals from the flow rate sensor 35 and temperature sensor 34 are communicated to the controller.

Next, the operation of this embodiment will be explained.

First, the normal mixing operation will be described. When the faucet 21 is open and hot water is being supplied, the controller 24 compares the temperature setting signal set by the hot water supply controller 23 and the mixed water temperature signal detected by the temperature detector 34, and calculates the deviation between the two. The mixing valve 36 is driven by the motor 31 to the zero position.

When the faucet 21 is closed and hot water supply is stopped, the flow rate detector 35
detects that the flow has stopped, and the drive of the motor 31 is stopped via the controller 24. Therefore, even if the temperature of the temperature detector 34 drops due to cooling after hot water supply is stopped, the mixing valve 36 does not operate to open the hot water side and throttle the water side, as in the conventional case. When the faucet 21 is opened at the time of refilling hot water, a flow occurs, which is detected by the flow rate detector 35 and energized to the motor a1. When refilling hot water, hot water does not come out temporarily like in the past.

The mixing valve 36 can also be operated from the proper position. Thereafter, a normal mixing operation is performed. In addition to being used as a means for detecting the open/closed state of the faucet as described above, the flow rate detector 35 can also be used to
It can also be used to change the proportional gain of motor control depending on the flow rate of mixed hot water.

In this way, the motor 31 is controlled via the controller 24 by the temperature setting signal from the hot water supply controller 23, the signal from the temperature detector 34, and the signal from the flow rate detector 3.

Next, the quantitative alarm operation will be described. Hot water controller 2
When the total amount of hot water to be supplied to the bathtub is set in step 3, the mixed water temperature is set, and the faucet 21 is opened, the mixing valve 3-6 starts mixing operation, and the flow rate detected by the flow rate detector 3 is The controller 24 starts integrating. When the meteor integrated value of the mixed hot water reaches a set value, a buzzer provided in the hot water controller 23 emits an alarm in response to a command from the controller 24. Therefore, the user can know that the amount of hot water in the bathtub has reached a predetermined value.

In this embodiment, the flow rate detector 35 is of a rotary type and is provided between the mixing valve 36 and the temperature detector 34, which has the effect of promoting the mixing of hot water and increasing the temperature detection accuracy of the temperature detector 34. has. Furthermore, since the temperature setting device, flow rate setting device, and buzzer serving as an alarm device are integrally provided as the hot water supply controller 23, handling and installation are easy. Furthermore, since the alarm is equipped with a buzzer, it is possible to know when the hot water level has reached the set value even if you are far away.

Effects of the Invention The present invention detects the presence or absence of hot water supply with a flow rate detector, controls the start/stop of the mixing valve drive unit, integrates the detected flow rate of the flow rate detector, and controls an alarm to notify that the set value of the amount of hot water has been reached. It has the following effects.

(1) When hot water supply stops, the flow rate detector detects this and prevents the driving device from driving the mixing valve, so hot water does not come out temporarily like in the past when hot water is resupplied. It's safe. Further, since the mixing valve can be operated from the position where it has been used ifj times, the time required to reach the position where the predetermined temperature is obtained is short, and responsiveness is improved.

(2) Since the amount of hot water can be set and an alarm is issued when the set value is reached, the user can easily detect this, preventing overflows in bathtubs, etc., and eliminating the hassle of frequent inspections.

(3) One flow rate detector can be used for multiple control targets, including controlling the driving device of the mixing valve and controlling the alarm by integrating the flow rate of the amount of mixed hot water.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a conventional hot water mixing device, Fig. 2 is a diagram of a hot water supply system using a hot water mixing device according to an embodiment of the present invention, and Fig. 3 is a partial cross section of a mixing unit used in the system. It is a diagram. 23... Hot water controller (temperature setting device, hot water amount setting device, alarm), 24... Controller, 31...
・Morph (drive device), 34...Temperature detector, 35・
...Flow rate detector, 36...Mixing valve.

Claims (4)

[Claims] (1) A mixing valve that mixes hot water and water, a drive device that drives the mixing valve, a temperature detector that detects the temperature of the mixed water, a temperature setting device that sets the temperature of the mixed water, and a temperature setting device that sets the amount of the mixed water. A flow rate detector to detect, a hot water rate setting device to set the integrated value of the mixed hot water amount, an alarm device to issue an alarm, and the drive device is activated by signals from the temperature detector, the temperature setting device, and the f3fj flow rate detector. A hot water mixing device comprising a controller that controls the amount of mixed hot water and issues an alarm from the alarm when the integrated value of the amount of mixed hot water reaches a set value based on signals from the flow rate detector and the amount of hot water setting device. (2) The hot water mixing device according to claim 1, wherein the flow rate detector is of a rotary type and is provided between the mixing valve and the temperature setting device. (3) The hot water mixing device according to claim 1, wherein a temperature setting device, a hot water amount setting device, and an alarm are integrated. (4) The hot water mixing device according to claim 1, wherein the alarm is a means for emitting an alarm such as a buzzer or a bell.