JPH01118037A - Mixer for hot water and water - Google Patents

Abstract

PURPOSE:To make it possible to swiftly take an appropriate measure, by generating an abnormal-condition signal from a signal generator if the temperature of mixed hot water tapped remains unchanged for a period of time counted by a counting circuit or even when the quantity of mixed hot water reaches an arbitrary preset value, after a hot water supplying valve reaches a predetermined opening position. CONSTITUTION:A timer circuit X is provided as a counting circuit in a controller 23. If the temperature of mixed hot water tapped remains unchanged for an arbitrary preset period of time after a hot water supplying valve 12 is brought to a predetermined opening position by driving a pulse motor 14, a signal generator 25 drives an alarm device 26 to turn ON a signal generating lamp or generate a signal sound. A mixed hot water quantity integrating circuit Y may be provided in place of the timer circuit X in the controller 23. The integrating circuit Y causes the signal generator 25 to drive the alarm device 26 if the temperature of mixed hot water tapped remains unchanged even when the quantity of mixed hot water reaches an arbitrary preset integrated value after the valve 12 reaches the predetermined opening position.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a hot water mixing device that can quickly detect and deal with an abnormality in a heat source such as a boiler connected to a hot water supply valve.

(B) Prior art The constant mixing temperature control of a conventional hot water mixing device is performed by using a hot water supply valve 1d and a water supply valve 1e provided on a hot water supply pipe 1b and a water supply pipe 1c, and both valves ld and l, as shown in Fig. 4.
A pulse motor 1a which is a valve driving device capable of driving e.
A hot water mixing valve 1 is constructed from the hot water mixing valve 1.
A temperature sensor 2 is provided behind the temperature sensor 2, and based on the difference between the temperature detected by the temperature sensor 2 and the set temperature, that is, the temperature deviation, a feedback signal is input to the controller 3 to drive the pulse motor la of the hot water mixing valve l. to control the temperature at a constant level.

Further, in the hot water mixing device, when the hot water supply switch is pressed, the pulse motor 1a first moves the hot water supply valve 1d to the hot water fully open position (reference position) to dump the hot water. after that,
Once the pulse motor 1a is stopped and the timer is set, if the set temperature is higher than the measured temperature, the pulse motor 1a is driven again and the hot water supply valve 1d and water supply valve le are
The temperature is adjusted to the set temperature, and then the mixed hot water is discharged to the discharge fitting or shower.

In addition, in the figure, 4 is an operation panel for operating the controller 3, and 5 is an operation panel for operating the controller 3.
is arranged on the downstream side of the hot water mixing valve l, and the discharge fitting flow path 6
This is a flow rate adjustment/water stop/switching valve that selectively supplies mixed hot water to the shower channel 7.

(C) Problems to be Solved by the Invention However, in using such a conventional hot water mixing device, even if the hot water supply valve reaches the fully open position by driving the pulse motor 1a, the output temperature of the mixed hot water does not change. An accident occurs. The causes of such accidents include malfunctions in the heat source, such as a boiler, which is connected to the hot water supply valve.
Alternatively, it is possible that the user has forgotten to turn on the heat source.

An object of the present invention is to provide a hot water mixing device that allows a user or the like to quickly take appropriate measures when the above-mentioned accident occurs.

(D) Means for Solving the Problems The present invention provides for driving a hot water supply valve that adjusts the amount of hot water from a hot water supply pipe and a water supply valve that adjusts the amount of water from the water supply pipe by a valve driving device controlled by a controller, In a hot water mixing device that obtains hot water at a desired temperature in a mixed hot water flow path, a count circuit for counting elapsed time or mixed hot water amount is provided in the controller, and a hot water supply valve reaches a predetermined opening position by a valve driving device. After that, if the outlet temperature of the mixed hot water does not change even if the time counted by the counting circuit or the amount of mixed hot water reaches a preset time or the amount of mixed hot water, the signal generator is made to issue an abnormality signal. The present invention relates to a hot water mixing device characterized in that it is configured as follows.

(e) Action and effect With the above configuration, the present invention has the following effects.

In other words, if the temperature of the mixed hot water does not change even after the hot water supply valve reaches a predetermined opening position (for example, the fully open position) by driving the valve drive device, there is an abnormality in the heat source connected to the hot water supply valve. Since the signal generator is configured to issue an abnormality signal when it is determined that there is a measures can be taken quickly.

Moreover, since appropriate measures such as repair and ignition can be taken quickly, the user does not feel inconvenienced.

(f) Examples The present invention will be specifically described below based on examples shown in the attached drawings.

FIG. 1 shows the conceptual overall configuration of a hot water mixing device A according to the present invention. and a water supply valve 13 are provided.

A pulse motor 14, which is a valve driving device, is interposed between the two pipes 10 and 11.
4, the hot water supply valve 12 and the water supply valve 13 can be driven and opened/closed to flow the mixed hot water into the mixed hot water flow path 15 located on the downstream side, and the mixing ratio of hot water and water can be adjusted by changing the valve opening/closing degree. You can change the temperature and adjust the temperature.

In the above configuration, the hot water mixing valve B is formed by the hot water supply valve 12, the water supply valve 13, and the pulse motor 14.

Note that FIG. 2 shows the specific configuration of the hot water mixing valve B, and as shown in the figure, the hot water mixing valve B is a rotating cylindrical body in which a mixing chamber is formed inside a cylindrical casing a. C is arranged above and below the same rotating cylinder C and about 180 mm.
Upper and lower openings d and e are provided at positions facing each other in the circular direction, and the upper and lower openings d and e are connected to the hot water supply pipe 11 in conjunction with the rotation of the rotary cylinder C. It is configured to be able to communicate with the water supply pipe IO, and furthermore, the upper end of the rotating cylinder C is fixed to the output shaft f of the pulse motor 14.

Further, the downstream side of the mixed hot water flow path 15 is branched into a discharge fitting flow path 16 and a shower flow path 17, respectively, as shown in FIG. The double-flow N adjustment valve 18.19 is driven by a pulp drive device 20 such as a motor, and can select a shower of mixed hot water or a discharge fitting, adjust the flow rate, and shut off the water. can.

That is, the flow control valves 18, 19 and the valve drive device 2
0, a flow rate adjustment/water stop/switching valve C is formed.

Furthermore, in FIG. 1, 21 is a temperature sensor provided in the mixed hot water flow path 15, and the temperature sensor 21 measures the temperature Tm of the mixed hot water flowing in the mixed hot water flow path 15, and the outlet temperature Tm. Based on the temperature deviation Δt from the set temperature Ts, the controller 23 performs PID control, etc., drives the pulse motor 14 of the temperature control valve B, and adjusts the degree of opening and closing of the hot water supply valve 12 and the water supply valve 13 by the same drive. By doing so, the temperature of the mixed hot water can be adjusted.

The controller 23 has a hot water mixing valve opening/closing speed control means therein and drives a pulse motor 14 of the hot water mixing valve 2, which is a driving means, by a control signal from the hot water mixing valve opening/closing speed controlling means. It is equipped with a drive circuit for

Further, in FIG. 1, reference numeral 24 denotes an IC Hall element, a photocoupler,
Valve position detection sensors such as reed switches and potentiometers are connected from the controller 23 to the pulse motor 14.
Even if a predetermined number of pulses corresponding to a predetermined opening position of the hot water supply valve 12, for example, a fully open position, is sent,
An output signal is generated when the hot water supply valve 12 does not reach the predetermined opening position.

In addition, in FIG. 2, a case is shown in which a TC Hall element is used as the valve position detection sensor 24, and as shown in the figure, a disk-shaped magnet g is attached to the output shaft r of the pulse motor 14. A valve position detection sensor 24 made of a Hall IC is disposed at a position corresponding to the disc-shaped magnet g.

Further, in FIG. 1, 25 is a signal generator connected to the controller 23, and the signal generator 25 is activated when the output signal from the above-mentioned valve position detection sensor 24 is sent to the controller 23. , This signal activates the alarm device 26 to display a signal generation lamp using an LED or the like, or generates an alarm sound such as an electronic sound.
This is an emergency stop for the pulp drive unit.

Furthermore, in FIG. 3, an example of a circuit configuration for controlling the signal generator 25 based on the output signal from the valve position detection sensor 24 is shown.

In the figure, 31 is an amplifier that amplifies the detection signal from the valve position detection sensor 24, and 32 is an amplifier that amplifies the detection signal from the valve position detection sensor 24. The detection signal amplified by the amplifier 31 is compared with a reference voltage preset by the setting section 33, and the voltage of the detection signal is determined. a comparator that is activated only when it is greater than a reference voltage; 34 is an amplifier that amplifies the output from the comparator 32; 35 is an alarm device 26 that is activated by the amplified output and is driven by the signal generator 25;
Signal generation lamps such as LEDs, phonograph and power supply 3 that make up the
This is a relay that connects 6 and 6.

Further, a timer circuit X (see FIG. 4) as a counting circuit is provided in the controller 23, and the timer circuit X actually opens the hot water valve 12 to a predetermined opening degree by driving the pulse motor 14 described above. After reaching the position, the mixed hot water outlet temperature Tm does not change even if you wait for the arbitrarily set time.
That is, when hot water does not come out from the shower or outlet fitting, the signal generating device 25 described above drives the alarm device 26 to display a signal generating lamp or generate a signal generating sound such as an electronic sound using a phonograph. It is something that can be done.

Note that a mixed hot water amount integrating circuit Y (see FIG. 5) may be provided as a counting circuit in the controller 23 instead of the timer circuit X. After the hot water supply valve 12 actually reaches the predetermined opening position due to the drive of If it doesn't come out,
It is also possible to drive the alarm device 26 by the signal generating device 25 described above to display a signal generating lamp or to generate a signal generating sound such as an electronic sound using a horn.

Further, in FIG. 1, 40 is an operation panel that communicates with the controller 23, and on the operation panel 40 there is a start/stop button a.
, a temperature setting button b, a switching button C, etc. are provided, and by operating these, the controller 23, the hot water mixed pulp B, etc. are put into an operable state, and the pulp drive device 20 is driven. The flow path selection and flow rate adjustment of the shower flow path 17 and the outlet fitting 16 can be performed.

Next, the operation of the hot water mixing device A having the above configuration will be explained with reference to the flowcharts shown in FIGS. 4 and 5.

First, press the start/stop button a on the operation panel 40 to enable the controller 23, signal generator 25, operation panel 40, hot water mixed pulp B, various sensors, etc. (100
).

Press the temperature setting button b on the operation panel 40 to set the set temperature T.
s is set to a desired temperature (101).

Is there an output of mixed hot water flowing through the hot water mixing channel ls to the temperature sensor 21? The li a degree Tm is detected (102).

If the outlet temperature Tm of the mixed hot water in the hot water mixing channel 15 is higher than the set temperature Ts (103n>, normal appropriate temperature control is performed (104).

However, if the set temperature Ts is higher than the outlet temperature Tm of the mixed hot water in the hot water mixing channel 15 (103y), one pulse signal is sent to the pulse motor 14 at a time.
The pulse motor 14 is rotated by an angle corresponding to one pulse, and only the hot water supply pulp 12 is rotated by the corresponding angle (105).

The hot water supply valve 12 has not yet reached the predetermined opening position (10
6n), and when the number of pulses counted by the pulse counter does not reach the predetermined opening position pulse number on the hot water side (107y), the temperature setting (102) and temperature comparison (103
), and the above-mentioned operations (103) to (107
) is repeated for each additional pulse.

Then, the number of pulses becomes the number of pulses at the predetermined opening position on the hot water side,
When the hot water supply valve 12 actually reaches the predetermined opening position on the hot water side (106y), the pulse motor 14 stops.108
), a waiting time is set by a timer circuit X built into the controller 23 (109).

Then, within the waiting time set by the timer circuit
s or higher than a fixed temperature (for example, 20° C. to 30° C.) (110 n), then normal temperature control will be performed (104).

However, even if the number of pulses sent to the pulse motor 14 exceeds the predetermined opening position pulse number on the hot water side, the hot water supply valve 12 does not actually reach the predetermined opening position (106n), and When the number of pulses exceeds the predetermined opening position pulse number on the hot water side (107n), the signal generator 25 is activated by the output of the pulse position detection sensor 24, drives the alarm device 26, and generates the desired signal. A display will be made (111).

Thereafter, the temperature adjustment operation of hot water mixing device A will be stopped manually (including remote control) or automatically (112).
.

As described above, in this embodiment, even if a predetermined number of pulses corresponding to the predetermined opening position on the hot water side are sent to the pulse motor 14, if the hot water supply valve 12 does not reach the predetermined opening position, the hot water supply valve 12. Water supply pulp 13 or pulse motor 1
4, or that the inside of the hot water mixing device A is in a frozen state, etc., and the signal generator 25 is made to issue an abnormality signal, thereby achieving a failsafe and issuing a visible and audible alarm. This makes it possible to quickly discover abnormal conditions and take appropriate measures such as repair or defrosting.

Further, in this embodiment, the hot water temperature Tm is set within the waiting time set by the timer circuit X.

Constant temperature Ts or fixed temperature (e.g. 20°C to 30°C)
(110y), and when the waiting time of the timer circuit When the mixed hot water amount integrated value by the hot water amount integrating circuit Y reaches a predetermined value (113), the signal generator 25 is activated and the desired alarm display is displayed on the alarm device 2.
6 (114). Thereafter, the operation of the hot water mixing device A is stopped manually (including by remote control) or automatically (112).

In this way, even if the pulse motor 14 itself is operating normally, the signal generator 25 issues an abnormality signal even if the hot water temperature Tm does not rise above the set temperature Ts within the waiting time set by the timer circuit X. As a result, abnormal conditions such as failure to ignite the boiler located upstream of the hot water supply pipe 10 can be quickly discovered, and appropriate measures such as igniting the boiler etc. can be quickly taken.

Moreover, since appropriate measures such as repair and ignition can be taken quickly, the user does not feel inconvenienced.

In the above embodiment, the pulse motor 14 is used as the valve drive device, but other types of valve drive devices can also be used.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the conceptual configuration of the hot water mixing device according to the present invention, Fig. 2 is an explanatory diagram of the specific configuration of the hot water mixing valve, and Fig. 3 is a control circuit that generates a signal indicating that the pulse motor is not driven. FIG. 4 and FIG. 5 are flowcharts showing the operating procedure of the hot water mixing device, and FIG. 6 is a conceptual diagram explaining the configuration of the conventional hot water mixing device. In the figure, B: Hot water mixing valve lO: Hot water pipe 11: Water supply pipe 12: Hot water supply valve 13: Water supply valve 14: Pulse smoke
23: Controller 24: Valve position detection sensor

Claims (1)

[Claims] 1. A hot water valve that adjusts the amount of hot water from the hot water supply pipe and a water supply valve that adjusts the amount of water from the water supply pipe are driven by a valve driving device controlled by a controller, so that hot water at a desired temperature is obtained in the mixed hot water flow path. In the hot water mixing device, a counting circuit for counting the elapsed time or the amount of mixed hot water is provided in the controller, and after the hot water supply valve reaches a predetermined opening position by the valve driving device, the time counted by the counting circuit or the amount of mixed hot water is A hot water mixing device characterized in that the signal generating device is configured to issue an abnormality occurrence signal when the outlet temperature of the mixed hot water does not change even when the water amount reaches a preset arbitrarily set time or the mixed hot water amount.